WO2016147540A1 - Nozzle unit for liquid jetting device - Google Patents

Nozzle unit for liquid jetting device Download PDF

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Publication number
WO2016147540A1
WO2016147540A1 PCT/JP2016/000651 JP2016000651W WO2016147540A1 WO 2016147540 A1 WO2016147540 A1 WO 2016147540A1 JP 2016000651 W JP2016000651 W JP 2016000651W WO 2016147540 A1 WO2016147540 A1 WO 2016147540A1
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WO
WIPO (PCT)
Prior art keywords
suction
nozzle unit
flow path
liquid
movable member
Prior art date
Application number
PCT/JP2016/000651
Other languages
French (fr)
Japanese (ja)
Inventor
壮輔 山▲崎▼
Original Assignee
セイコーエプソン株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by セイコーエプソン株式会社 filed Critical セイコーエプソン株式会社
Publication of WO2016147540A1 publication Critical patent/WO2016147540A1/en

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/32—Surgical cutting instruments
    • A61B17/3203—Fluid jet cutting instruments

Definitions

  • the present invention relates to liquid suction.
  • a spatula with a suction function is known (Patent Document 1).
  • This spatula has a hollow structure, and a hole for adjusting the suction force is provided in the grip portion.
  • the present invention is for solving the above-described problems and can be realized as the following forms.
  • a nozzle unit for a liquid ejecting apparatus includes: a suction flow path portion having a suction flow path for sucking liquid; a movable member having a hole communicating with the suction flow path; and holding the suction flow path portion and the movable member
  • the movable member is configured to be movable with respect to the case. According to this form, the position of the hole can be moved relative to the case.
  • the movement of the movable member may include a rotational movement. According to this form, the position of the hole can be rotationally moved with respect to the case.
  • the center of the rotational movement may be parallel to the longitudinal direction of the case. According to this aspect, the user can easily rotate and move with the thumb of the hand holding the case.
  • an outer peripheral surface of the suction channel portion may function as a central axis of the rotational movement. According to this aspect, the position of the hole can be rotated around the suction flow path portion.
  • a support member fixed to the case is provided; the movable member is rotatably supported by the support member; and the movable member protrudes in a direction orthogonal to the center of the rotational movement.
  • the above form can be realized as this form, for example.
  • the concave curved surface may be provided in the site
  • the protrusion may be disposed on the opposite side of the concave curved surface with respect to the center of the rotational movement. According to this form, it becomes easy to close the hole. When the periphery of the hole is pressed with a finger to close the hole, the force is supported by the contact portion. As a result, deformation of the rotating member is suppressed, and the above effect can be obtained.
  • knurls may be provided on the outer peripheral surface of the movable member. According to this form, it becomes easy to rotate the movable member.
  • the width of the movable member may be not less than 15 mm and not more than 25 mm. According to this form, it becomes easy to use for a user having a standard hand size.
  • the suction force may act on the suction flow path via a suction tube connected to the support member. According to this embodiment, even if the movable member is rotated, the reaction force is not received from the suction tube.
  • the present invention can be realized in various forms other than the above.
  • the present invention can be realized as a liquid ejecting apparatus handpiece including the liquid ejecting apparatus actuator unit and the liquid ejecting apparatus nozzle unit, or a liquid ejecting apparatus including the liquid ejecting apparatus handpiece and the liquid supply apparatus.
  • FIG. 2 is a schematic configuration diagram of a liquid ejecting apparatus.
  • FIG. 4 is an enlarged cross-sectional view around the liquid chamber (mounted state).
  • FIG. 13 is an end view of a 13-13 cross section shown in FIG. 12.
  • FIG. 13 is an end view of a 13-13 cross section shown in FIG. 12.
  • FIG. 13 is an end view of a 13-13 cross section shown in FIG. 12.
  • Sectional drawing which shows a rotation member and a supporting member (modification 1).
  • Sectional drawing which shows a rotation member and a supporting member (modification 2).
  • Sectional drawing which shows a rotation member and a supporting member (modification 3).
  • Sectional drawing which shows a suction force adjustment mechanism (modification 4).
  • FIG. 1 schematically shows a configuration of the liquid ejecting apparatus 20.
  • the liquid ejecting apparatus 20 is a medical device used in a medical institution, and has a function of excising an affected part by ejecting liquid onto the affected part.
  • the liquid ejecting apparatus 20 includes a control unit 30, an actuator cable 31, a pump cable 32, a foot switch 35, a suction device 40, a suction tube 41, a liquid supply device 50, and a handpiece 100 (operation unit). With.
  • the liquid supply device 50 includes a water supply bag 51, a spike needle 52, first to fifth connectors 53a to 53e, first to fourth water supply tubes 54a to 54d, a pump tube 55, a blockage detection mechanism 56, And a filter 57.
  • the handpiece 100 includes a nozzle unit 200 and an actuator unit 300.
  • the nozzle unit 200 includes an ejection tube 205 and a suction tube 400.
  • the water supply bag 51 is made of a transparent synthetic resin, and is filled with a liquid (specifically, physiological saline). In addition, in this application, even if it fills with liquids other than water, it calls the water supply bag 51.
  • FIG. The spike needle 52 is connected to the first water supply tube 54a via the first connector 53a. When the spike needle 52 is stabbed into the water supply bag 51, the liquid filled in the water supply bag 51 can be supplied to the first water supply tube 54a.
  • the first water supply tube 54a is connected to the pump tube 55 via the second connector 53b.
  • the pump tube 55 is connected to the second water supply tube 54b via the third connector 53c.
  • the tube pump 60 sandwiches the pump tube 55 between the stator and the rotor.
  • the tube pump 60 handles the pump tube 55 by rotating a plurality of rollers by rotation of a built-in motor. By being handled in this way, the liquid in the pump tube 55 is sent out from the first water supply tube 54a side to the second water supply tube 54b side.
  • the blockage detection mechanism 56 detects the blockages in the first to fourth water supply tubes 54a to 54d by measuring the pressure in the second water supply tube 54b.
  • the second water supply tube 54b is connected to the third water supply tube 54c via the fourth connector 53d.
  • a filter 57 is connected to the third water supply tube 54c. The filter 57 collects foreign matters contained in the liquid.
  • the third water supply tube 54c is connected to the fourth water supply tube 54d via the fifth connector 53e.
  • the fourth water supply tube 54d is connected to the handpiece 100.
  • the liquid supplied to the handpiece 100 through the fourth water supply tube 54d is intermittently ejected from the nozzle 207 provided at the tip of the ejection tube 205 by driving the actuator unit 300. In this way, the liquid is intermittently ejected, so that the resecting capability can be secured with a small flow rate.
  • the injection tube 205 and the suction tube 400 constitute a double tube having the injection tube 205 as an inner tube and the suction tube 400 as an outer tube.
  • the suction tube 41 is connected to the nozzle unit 200.
  • the suction device 40 sucks the inside of the suction tube 400 through the suction tube 41. By this suction, liquid near the tip of the suction tube 400, a cut piece, and the like are sucked.
  • the control unit 30 controls the tube pump 60 and the actuator unit 300. Specifically, the control unit 30 transmits a drive signal via the actuator cable 31 and the pump cable 32 while the foot switch 35 is depressed. The drive signal transmitted via the actuator cable 31 drives the actuator unit 300. The drive signal transmitted via the pump cable 32 drives the tube pump 60. Therefore, the liquid is intermittently ejected while the user steps on the foot switch 35, and the liquid ejection stops while the user does not step on the foot switch 35.
  • FIG. 2 and 3 are perspective views of the handpiece 100.
  • FIG. FIG. 2 shows a state where the actuator unit 300 is attached to the nozzle unit 200 (hereinafter referred to as “attached state”).
  • FIG. 3 shows a state where the actuator unit 300 and the nozzle unit 200 are separated (hereinafter referred to as “separated state”).
  • the actuator unit 300 is configured to be detachable from the nozzle unit 200.
  • the actuator unit 300 is attached to the nozzle unit 200, and the actuator unit 300 and the nozzle unit 200 are integrated to function as the handpiece 100.
  • the nozzle unit 200 is replaced every operation because the liquid flows inside. Further, among the components included in the liquid supply device 50, the ones in which the liquid flows (the water supply bag 51, the first to fourth water supply tubes 54a to 54d, the pump tube 55, etc.) are replaced every operation. Since the actuator unit 300 does not touch the liquid, it can be used in a plurality of operations by performing a sterilization process or a cleaning process.
  • the nozzle unit 200 includes a handpiece case 210, a joint portion 250, and a suction force adjusting mechanism 500 in addition to the above-described injection tube 205 and suction tube 400.
  • the handpiece case 210 has a function as a grip held by the user and a function of holding the flow path inside. This flow path is a flow path through which the liquid to be ejected and the liquid to be sucked flow as described above.
  • the suction force adjusting mechanism 500 is provided in the handpiece 100 and includes a hole 522.
  • the opening area of the hole 522 changes, the suction force by the suction pipe 400 changes (detailed with FIG. 5).
  • the joint part 250 is a part for attaching / detaching the actuator unit 300 to / from the nozzle unit 200.
  • the actuator unit 300 includes a connecting part 310 and a driving part 350.
  • the connecting portion 310 mechanically and electrically connects the actuator cable 31 and the drive portion 350.
  • the driving unit 350 generates a driving force for intermittently ejecting the liquid.
  • FIG. 4 is a perspective view showing the nozzle unit 200.
  • FIG. 4 shows a state in which the suction tube 400 is removed from the handpiece case 210.
  • the handpiece 100 may be used with the suction tube 400 removed.
  • suction using the suction tube 400 is not possible, but liquid can be ejected from the ejection tube 205.
  • the suction tube 400 includes a convex portion 410.
  • the convex part 410 is a part for attaching the suction tube 400 to the handpiece case 210.
  • the fourth water supply tube 54 d is connected to the handpiece case 210. 2 and 3 do not show the fourth water supply tube 54d because of the line of sight.
  • FIG. 5 is a cross-sectional view showing the handpiece 100.
  • the fourth water supply tube 54d is bent in a U shape inside the handpiece case 210 and connected to the inlet channel 241.
  • the inlet channel 241 communicates with the ejection pipe 205 via the liquid chamber 240 (see FIGS. 8 and 9).
  • the channel diameter of the inlet channel 241 is smaller than the channel diameter of the injection pipe 205. For this reason, even if the pressure in the liquid chamber 240 fluctuates (described later), the liquid in the liquid chamber 240 is prevented from flowing back into the inlet channel 241.
  • the handpiece case 210 has a recess 211 at the tip.
  • the attachment of the suction pipe 400 is realized by fitting the convex portion 410 into the concave portion 211.
  • the attached suction tube 400 communicates with the suction flow path section 230.
  • the suction flow path unit 230 is connected to the suction tube 41 via the suction force adjustment mechanism 500.
  • the user can adjust the suction force by the suction tube 400 using the hole 522. Specifically, if the area where the hole 522 is opened is reduced, the flow rate of air flowing in from the hole 522 is also reduced, so that the flow rate of fluid (air, liquid, etc.) sucked through the suction pipe 400 is reduced. growing. That is, the suction force by the suction pipe 400 is increased. On the contrary, if the area where the hole 522 is opened is increased, the flow rate of the air flowing from the hole 522 is also increased, so that the suction force by the suction pipe 400 is reduced. Usually, the user adjusts the open area of the hole 522 by adjusting the area where the hole 522 is closed by the thumb.
  • the shape of the hole 522 is designed so that the suction force by the suction pipe 400 becomes minute or no suction force acts.
  • the flow area of the suction pipe 400 is larger than the opening area of the hole 522
  • the flow resistance of the suction pipe 400 is reduced by making the length of the suction pipe 400 longer than the length of the hole 522. It is larger than the flow path resistance. In this way, when the hole 522 is not covered at all, the suction force by the suction tube 400 can be made minute.
  • the longitudinal direction is defined with respect to the handpiece case 210.
  • the longitudinal direction is a direction included in the cross section shown in FIG. 5 and is a horizontal direction in a predetermined posture.
  • the predetermined posture is a posture when the user holds the handpiece 100 with the hand after the palm is turned up.
  • the longitudinal direction in the present embodiment matches the flow path direction of the suction flow path section 230.
  • the flow path direction of the suction flow path section 230 is a flow direction in the suction flow path section 230 at a portion where the suction flow path section 230 is in contact with the suction force adjustment mechanism 500.
  • FIG. 6 and 7 are enlarged sectional views showing the vicinity of the joint portion 250 and the actuator unit 300.
  • FIG. FIG. 6 shows a mounted state.
  • FIG. 7 shows a separated state.
  • the driving unit 350 includes a housing 351, a fixed member 353, a piezoelectric element 360, and a movable plate 361.
  • the housing 351 is a cylindrical member.
  • the movable plate 361 includes a piston 362 and a drive side diaphragm 364.
  • Piezoelectric element 360 is a laminated piezoelectric element.
  • the piezoelectric element 360 is disposed in the housing 351 so that the extending and contracting direction is along the longitudinal direction of the housing 351.
  • the piezoelectric element 360 in the present embodiment has a substantially regular quadrangular prism shape, is 3.5 mm square, and has a height of 18 mm.
  • the fixing member 353 is fixed to one end of the housing 351.
  • the piezoelectric element 360 is fixed to the fixing member 353 with an adhesive.
  • the material of the drive side diaphragm 364 is a metal, specifically stainless steel, and more specifically SUS304 or SUS316L.
  • the drive side diaphragm 364 is formed thicker (for example, 300 ⁇ m) in order to preload the piezoelectric element 360 (described later). Further, since the piezoelectric element 360 is made of metal and is formed thick, it is smoothly curved when pushed by the piston 362. For this reason, the liquid chamber side diaphragm 260 can also be smoothly deformed in the mounted state.
  • the drive side diaphragm 364 is disposed so as to cover the other end of the housing 351 and is fixed to the housing 351 by welding.
  • the piston 362 is fixed to one end of the piezoelectric element 360 with an adhesive and is disposed so as to contact the drive side diaphragm 364.
  • the piston 362 has a shape in which cylinders having different diameters are stacked as concentric circles. The smaller diameter is in contact with the drive side diaphragm 364. For this reason, the drive side diaphragm 364 is not pushed toward the end, and a large force does not act on the welded portion.
  • the piston 362 and the drive side diaphragm 364 are not fixed by an adhesive or the like but are only in contact with each other.
  • a male screw portion 351a is provided on the outer periphery of the housing 351. The transition from the separated state to the mounted state is realized by tightening the male screw portion 351a to the female screw portion 253 provided in the joint portion 250.
  • the connecting portion 310 includes a first case 311, a second case 312, a third case 313, a holding member 314, a metal plate 315, a first screw 316, a second screw 317, and a third screw 318. Is provided. Note that the metal plate 315 can also be referred to as the relay substrate 315.
  • the first case 311 is fixed to the fixing member 353 by the first screw 316.
  • the second case 312 is fixed to the first case 311 by a second screw 317 and a third screw 318.
  • the two metal plates 315 are inserted (accommodated) in the first case 311.
  • the holding member 314 is fixed by being crimped near the end of the actuator cable 31.
  • the third case 313 is a member for connecting the second case 312 and the holding member 314.
  • the third case 313 is fixed to the second case 312 in a state where the portion where the outer diameter of the holding member 314 is expanded is hooked.
  • the actuator cable 31 is connected so as to be electrically connected to the two metal plates 315 while being fixed as described above.
  • the metal plate 315 is connected to the positive electrode and the negative electrode of the piezoelectric element 360 by wiring (not shown).
  • Piezoelectric element 360 expands and contracts in response to a drive signal input via actuator cable 31, metal plate 315, and the above wiring.
  • the piston 362 vibrates in the longitudinal direction of the piezoelectric element 360.
  • the drive side diaphragm 364 is deformed following the vibration.
  • the piezoelectric element 360 is assembled in a preloaded state in order to appropriately perform expansion and contraction.
  • the preloaded state is a state in which the piezoelectric element 360 is pressed toward the driving diaphragm 364 and the piezoelectric element 360 is compressed in the expansion / contraction direction.
  • the preload load is 10 to 50% of the maximum generated force of the piezoelectric element 360, specifically 40 to 200N. For this reason, even when a drive signal is not input to the piezoelectric element 360, the drive side diaphragm 364 receives force from the piezoelectric element 360 via the piston 362. The reason that the drive side diaphragm 364 is made of metal and is thicker than the liquid chamber side diaphragm 260 is to hold the preload.
  • the drive side diaphragm 364 is deformed as described above, the drive side diaphragm 364 can be deformed following the contraction of the piezoelectric element 360 even if it is not bonded to the piston 362.
  • FIG. 8 and 9 are cross-sectional views showing the vicinity of the liquid chamber 240 in an enlarged manner.
  • FIG. 8 shows a mounted state.
  • FIG. 9 shows the separated state.
  • a liquid chamber 240 is provided inside the joint portion 250.
  • the liquid chamber 240 is formed by covering the recess 244 with the liquid chamber side diaphragm 260.
  • the recess 244 is a portion that is thin and circularly recessed in the joint portion 250.
  • the liquid chamber side diaphragm 260 is formed thinner than the driving side diaphragm 364 (for example, 50 to 100 ⁇ m) so as to be easily deformed in accordance with expansion and contraction of the piezoelectric element 360.
  • the liquid chamber side diaphragm 260 has a diameter of 13 to 15 mm, and is fixed to the joint portion 250 by welding. The welding position is shown as welding Y1 shown in FIG.
  • the material of the liquid chamber side diaphragm 260 is a metal, specifically stainless steel, and more specifically SUS304 or SUS316L.
  • the liquid chamber side diaphragm 260 and the drive side diaphragm 364 are in contact with each other in the mounted state. For this reason, as described above, when the driving side diaphragm 364 is deformed, the liquid chamber side diaphragm 260 is similarly deformed.
  • the volume of the liquid chamber 240 changes. Due to this variation, the pressure of the liquid filled in the liquid chamber 240 varies. When the pressure in the liquid chamber 240 decreases, the liquid flows into the liquid chamber 240 from the inlet channel 241. When the pressure in the liquid chamber 240 increases, the liquid flows out from the liquid chamber 240 to the ejection pipe 205. The liquid that has flowed out to the ejection tube 205 is ejected from the tip of the ejection tube 205. Since the pressure in the liquid chamber 240 rises intermittently, the liquid is ejected from the ejection pipe 205 intermittently.
  • the liquid chamber side diaphragm 260 and the drive side diaphragm 364 are integrally deformed. That is, the liquid chamber side diaphragm 260 and the movable plate 361 are integrally deformed.
  • Reference numeral 460 shown in FIG. 8 indicates a composite diaphragm 460 in which the liquid chamber side diaphragm 260 and the movable plate 361 that are integrally deformed in this manner are combined.
  • the composite diaphragm 460 can be regarded as one diaphragm in the mounted state.
  • FIG. 10 is a view for explaining the welding of the liquid chamber side diaphragm 260 and the driving side diaphragm 364.
  • the housing 351 is provided with a chamfer 351b as shown in FIG.
  • the chamfer 351b is provided so that the weld Y1 that fixes the liquid chamber side diaphragm 260 and the housing 351 do not interfere with each other.
  • the front end of the housing 351 is retracted by a dimension C from the front end of the drive side diaphragm 364.
  • a clearance is generated between the liquid chamber side diaphragm 260 and the housing 351 in the mounted state.
  • symbol 255 shown by FIG. 10 shows the escape part 255 provided in another form. In this embodiment, as shown in FIG. 8, FIG. 9, etc., the escape part 255 is not provided.
  • the relief portion 255 is a portion of the inner periphery of the joint portion 250 where the wall is sunk toward the inside. By providing the relief portion 255, the internal thread portion 253 can be easily processed.
  • FIG. 11 is a perspective view showing the suction force adjusting mechanism 500.
  • FIG. 12 is a cross-sectional view showing the suction force adjusting mechanism 500, and shows a state where the suction tube 41 and the suction flow path section 230 are connected.
  • the suction force adjusting mechanism 500 includes a rotating member 520 (movable member), a supporting member 540, and an O-ring 560.
  • the support member 540 is fixed to the handpiece case 210.
  • the rotating member 520 is rotatably supported by the support member 540.
  • the O-ring 560 is disposed in the gap between the rotating member 520 and the support member 540.
  • the rotating member 520 includes a hole 522, an operation surface 524, a first fitting hole 525 a, a second fitting hole 525 b, a knurl 526, an overhang portion 527, a protrusion 528, and a flow path 529.
  • the support member 540 includes a joint 541, a rotation shaft 545, a through hole 546, and a contact portion 548.
  • the first fitting hole 525a is fitted to the rotating shaft 545.
  • the second fitting hole 525b is fitted to the suction flow path portion 230. Since the suction channel portion 230 passes through the through hole 546, it is supported by the through hole 546.
  • the flow path direction of the suction flow path section 230 is arranged coaxially with the rotation shaft 545. With these configurations, the rotating member 520 is rotatably supported. In addition, even if the rotation member 520 rotates, the suction flow path part 230 does not rotate. Therefore, when the rotating member 520 rotates, the second fitting hole 525b rubs against the suction flow path portion 230.
  • the operation surface 524 is a smooth concave curved surface provided so as to easily close the hole 522 with the thumb.
  • the knurl 526 is a portion configured by a plurality of projections and depressions provided so that the rotating member 520 can be easily rotated by the thumb.
  • the channel 529 is a channel for connecting the inside of the suction channel unit 230 and the inside of the suction tube 41.
  • the joint 541 is a hollow protrusion for connecting the suction tube 41. Since the joint 541 is provided on the support member 540, the suction tube 41 connected to the joint 541 does not receive torque even when the rotating member 520 rotates. For this reason, the rotation of the rotation member 520 is not hindered by the suction tube 41, and the rotation member 520 does not rotate unintentionally with the suction tube 41.
  • the protrusion 528 and the contact portion 548 constitute a mechanism for stabilizing the rotational position of the rotating member 520. (It will be described later together with FIGS. 13, 14, and 15). The overhang portion 527 will also be described later with reference to FIGS. 13, 14, and 15.
  • FIGS. 13, 14, and 15 are end views of the 13-13 cross section shown in FIG. This cross section is orthogonal to each of the longitudinal direction and the flow path direction of the suction flow path section 230.
  • the protrusion 528 has a rounded tip and is disposed so as to face the operation surface 524.
  • the contact part 548 is provided with mountains and valleys alternately. The peaks are located on the same arc. As shown in FIGS. 13, 14, and 15, when the protrusion 528 is in contact with the two inclined surfaces of the contact portion 548, the rotational position of the rotating member 520 is stable.
  • the user can rotate the rotating member 520 with the thumb.
  • the rotating member 520 and the support member 540 are elastically deformed.
  • the protrusion 528 climbs over the mountain of the contact portion 548, the protrusion 528 moves between adjacent slopes.
  • the user feels a click feeling through the finger touching the rotating member 520.
  • the click feeling is a sense that the rotating member 520 has moved to another rotational position. Furthermore, a sound is generated with the rotation of the rotating member 520. The user also feels a click with this sound.
  • the strength of the above click feeling depends on the insertion depth.
  • the insertion depth is a distance in the radial direction in the rotation of the rotation member 520 and is a distance from the position of the peak of the contact portion 548 to the contact position between the protrusion 528 and the inclined surface.
  • the insertion depth in the embodiment is set to the depth D1, as shown in FIG.
  • the overhang portion 527 is provided to narrow the gap between the rotating member 520 and the support member 540.
  • the projecting portion 527 is a portion projecting in the radial direction in rotation.
  • the width W is the entire width of the rotating member 520 in the direction orthogonal to the direction of penetration of the hole 522 and the direction of the flow path of the flow path 529.
  • the flow path direction of the flow path 529 coincides with the flow path direction of the suction flow path section 230.
  • the width W in this embodiment is set to 15 mm or more and 25 mm or less, and is easy to use for a user having a standard hand size.
  • the user can change the rotational position of the hole 522. Therefore, the user can adjust the rotation position of the hole 522 to a position that fits his / her finger, or can adjust the rotation position of the hole 522 according to the situation of the operation.
  • the center of rotation of the rotating member 520 coincides with the longitudinal direction and the flow path direction of the suction flow path section 230, the user can easily rotate the rotating member 520 with the thumb.
  • FIG. 16 is a cross-sectional view showing the rotating member 520 and the support member 540a.
  • the support member 540a is used instead of the support member 540 of the embodiment.
  • the support member 540a includes a contact portion 548a.
  • the contact portion 548a has an insertion depth D2.
  • the depth D2 is shallower than the depth D1 of the embodiment.
  • the mountain of the contact portion 548a is designed to have a gentle shape.
  • FIG. 17 is a cross-sectional view showing the rotating member 520 and the support member 540b.
  • the support member 540b is used instead of the support member 540 and the support member 540a.
  • the support member 540b includes a contact portion 548b.
  • the contact portion 548b is configured as a circumferential inner peripheral surface. That is, unlike the support member 540 and the support member 540a, it does not have a structure with peaks and valleys.
  • the contact portion 548 b determines the rotational position of the rotating member 520 by friction with the protrusion 528. For this reason, it can also be expressed that the insertion depth is zero. With this feature, the rotational position can be adjusted steplessly, and a click feeling does not occur.
  • FIG. 18 is a cross-sectional view showing the rotating member 520c (movable member) and the support member 540c.
  • the rotating member 520c is used instead of the rotating member 520 of the embodiment.
  • the support member 540c is used instead of the support member 540 of the embodiment.
  • Rotating member 520c includes a protrusion 528c.
  • the support member 540c includes a contact portion 548c.
  • the protrusion 528c and the contact part 548c have the same structure as the protrusion 528 and the contact part 548 of the embodiment.
  • the protrusion 528c is formed at the end of the rotating member 520c.
  • the contact portion 548c is formed at the end of the support member 540c.
  • the support member 540c has a structure that does not directly support the suction flow path portion 230.
  • the suction channel portion 230 side of the rotating member 520 is supported by the protrusion 528c coming into contact with the contact portion 548c.
  • FIG. 19 is a perspective view showing the suction force adjusting mechanism 600.
  • the suction force adjustment mechanism 600 is used instead of the suction force adjustment mechanism 500 of the embodiment.
  • the suction force adjustment mechanism 600 includes a slider 620 (movable member) and a flow path member 640.
  • FIG. 20 is a perspective view showing a state where the slider 620 and the flow path member 640 are disassembled.
  • 21 and 22 are cross-sectional views showing the suction force adjusting mechanism 600. FIG. As will be described in detail later, FIGS. 21 and 22 differ in the position of the slider 620.
  • the flow path member 640 includes a joint 641, a penetration part 642, a countersink part 643, a flow path member fitting hole 645, and a flow path 649.
  • the joint 641 is a part for connection with the suction tube 41 as in the joint 541 of the embodiment.
  • the channel member fitting hole 645 is a hole for holding the suction channel portion 230, similarly to the second fitting hole 525b of the embodiment.
  • the channel 649 is a channel for connecting the suction channel unit 230 and the suction tube 41 as in the channel 529 of the embodiment.
  • the countersink portion 643 is a flat surface formed by countersinking a part of the tube wall constituting the flow path 649. However, actually, it is not formed by the countersink processing, but the entire channel member 640 is formed by die molding, 3D printing, or the like, so that the countersink portion 643 is also formed.
  • the counterbore 643 passes through the tube wall of the flow path 529. By this penetration, a penetration part 642 is formed.
  • the slider 620 includes a hole 622 and a sealing surface 625.
  • the sealing surface 625 is formed as a cylindrical inner peripheral surface.
  • the flow path member 640 is inserted into the slider 620 so that the penetrating portion 642 communicates with the hole 622 when assembled as the suction force adjusting mechanism 600. With this relationship, the suction force can be adjusted by closing the hole 622 with the thumb, as in the embodiment.
  • the slider 620 can be moved along the flow path direction of the flow path member 640.
  • FIG. 21 shows a state of being brought closer to the flow channel member fitting hole 645 side, that is, a state of being brought closer to the suction flow passage portion 230 side.
  • FIG. 22 shows a state brought close to the joint 641 side, that is, a state brought close to the suction tube 41 side.
  • the slider 620 can be rotated along the circumferential direction of the flow path member 640. According to the modified example 4, the position of the hole 622 can be translated as well as rotationally moved.
  • the present invention is not limited to the embodiments, examples, and modifications of the present specification, and can be realized with various configurations without departing from the spirit of the present invention.
  • the technical features in the embodiments, examples, and modifications corresponding to the technical features in the embodiments described in the summary section of the invention are to solve some or all of the above-described problems, or In order to achieve part or all of the effects described above, replacement or combination can be performed as appropriate. If the technical feature is not described as essential in this specification, it can be deleted as appropriate. For example, the following are exemplified.
  • the nozzle unit and the actuator unit may be integrally formed.
  • the unit configured in this way may be regarded as a nozzle unit or a hand piece.
  • the number of diaphragms may be one.
  • the liquid to be ejected may be pure water or a chemical solution.
  • the liquid ejecting apparatus may be used other than medical equipment.
  • the liquid ejecting apparatus may be used in a cleaning apparatus that removes dirt with the ejected liquid, or may be used in a drawing apparatus that draws a line or the like with the ejected liquid.
  • the configuration assuming that the hole for adjusting the suction force is closed by the user's thumb is adopted.
  • the user closes the hole using another finger in the same configuration as the embodiment.
  • the area where the hole is blocked may be adjusted via another member.
  • the other member include a cover provided so as to cover the opening of the hole.
  • a configuration using a piezoelectric element as an actuator is adopted.
  • a configuration in which liquid is ejected using an optical maser, or a configuration in which liquid is pressurized by a pump or the like may be employed.
  • the structure in which the liquid is ejected using the optical maser is a structure in which bubbles are generated in the liquid by irradiating the liquid with the optical maser, and the liquid pressure rise caused by the generation of the bubbles is utilized.
  • the configuration in which the liquid is intermittently ejected is employed, but a configuration having a function of ejecting the liquid continuously may be employed.
  • the structure which can selectively use intermittent injection and continuous injection may be sufficient.
  • only the tube pump may be driven with the driving of the actuator stopped or reduced.
  • intermittent spraying may be performed for excision and continuous spraying may be performed for cleaning.
  • the structure which can implement only continuous injection may be sufficient.
  • the ablation may be performed by continuous injection.
  • Support member 540a ... Support member, 540b ... Support member, 540c ... Support member, 541 ... Joint, 545 ... Rotation Shaft, 546 ... through hole, 548 ... contact portion, 548a ... contact portion, 548b ... contact portion, 548c ... contact portion, 560 ... O-ring, 600 ... suction force adjusting mechanism, 620 ... slider, 622 ... hole, 625 ... sealed Stop surface, 640 ... channel member, 641 ... joint, 642 ... penetration part, 643 ... counterbore part, 645 ... fitting hole for channel member, 649 ... channel, 661 ... O ring, 662 ... O ring.

Abstract

The present invention makes it possible to move the position of a hole for adjusting a suction force. A nozzle unit for a liquid jetting device according to the present invention is provided with a suction flow channel part, a movable member, and a case. The suction flow channel part is provided with a suction flow channel for suctioning a liquid. The movable member is provided with a hole which passes through the suction flow channel. The case retains the suction flow channel part and the movable member. The movable member is configured so as to be able to move with respect to the case.

Description

液体噴射装置用ノズルユニットNozzle unit for liquid ejector
　本発明は、液体の吸引に関する。 The present invention relates to liquid suction.
　吸引機能を備えたスパーテル（薬さじ）が知られている（特許文献１）。このスパーテルは、中空構造であり、吸引力を調整するための孔が把持部に設けられている。 A spatula with a suction function is known (Patent Document 1). This spatula has a hollow structure, and a hole for adjusting the suction force is provided in the grip portion.
特開２００７－１５１７８３号公報JP 2007-151783 A
　上記先行技術の場合、孔の位置が固定されている。よって、ユーザーは、孔の位置を移動させることができず、使い勝手が良くなかった。このような課題は、スパーテルに限られず、例えば、液体噴射装置についても共通であった。本願発明は、上記を踏まえ、吸引力を調整するための孔の位置を移動させることができるようにすることを解決課題とする。 In the case of the above prior art, the position of the hole is fixed. Therefore, the user cannot move the position of the hole, which is not convenient. Such a problem is not limited to a spatula, and is common to liquid ejecting apparatuses, for example. This invention makes it a solution subject to enable it to move the position of the hole for adjusting attraction | suction force based on the above.
　本発明は、上記課題を解決するためのものであり、以下の形態として実現できる。 The present invention is for solving the above-described problems and can be realized as the following forms.
（１）本発明の一形態によれば、液体噴射装置用ノズルユニットが提供される。この液体噴射装置用ノズルユニットは；液体を吸引するための吸引流路を備える吸引流路部と；前記吸引流路に通じる孔を備える可動部材と；前記吸引流路部および前記可動部材を保持するケースと、を備え；前記可動部材は、前記ケースに対して移動できるように構成されている。この形態によれば、孔の位置をケースに対して移動させることができる。 (1) According to one aspect of the present invention, a nozzle unit for a liquid ejecting apparatus is provided. The nozzle unit for a liquid ejecting apparatus includes: a suction flow path portion having a suction flow path for sucking liquid; a movable member having a hole communicating with the suction flow path; and holding the suction flow path portion and the movable member The movable member is configured to be movable with respect to the case. According to this form, the position of the hole can be moved relative to the case.
（２）上記形態において、前記可動部材の移動は、回転移動を含んでもよい。この形態によれば、孔の位置を、ケースに対して回転移動させることができる。 (2) In the above aspect, the movement of the movable member may include a rotational movement. According to this form, the position of the hole can be rotationally moved with respect to the case.
（３）上記形態において、前記回転移動の中心は、前記ケースの長手方向に平行でもよい。この形態によれば、ユーザーは、ケースを握った手の親指で、回転移動をさせやすくなる。 (3) In the above aspect, the center of the rotational movement may be parallel to the longitudinal direction of the case. According to this aspect, the user can easily rotate and move with the thumb of the hand holding the case.
（４）上記形態において、前記吸引流路部は、外周面が前記回転移動の中心軸として機能してもよい。この形態によれば、孔の位置を、吸引流路部を中心として回転移動させることができる。 (4) In the above aspect, an outer peripheral surface of the suction channel portion may function as a central axis of the rotational movement. According to this aspect, the position of the hole can be rotated around the suction flow path portion.
（５）上記形態において、前記可動部材の回転方向の位置を安定させる位置決め機構を備えてもよい。この形態によれば、孔の回転方向の位置が安定する。 (5) The said form WHEREIN: You may provide the positioning mechanism which stabilizes the position of the rotation direction of the said movable member. According to this form, the position in the rotation direction of the hole is stabilized.
（６）上記形態において、前記ケースに固定された支持部材を備え；前記可動部材は、前記支持部材に回転可能に支持され；前記可動部材は、前記回転移動の中心との直交方向に突き出した突起と、前記吸引流路部に通じる流路とを備え；前記支持部材は、前記突起に接触する接触部を備え；前記位置決め機構は、前記突起と前記接触部との接触によって実現されてもよい。上記の形態は、例えばこの形態のように実現できる。 (6) In the above embodiment, a support member fixed to the case is provided; the movable member is rotatably supported by the support member; and the movable member protrudes in a direction orthogonal to the center of the rotational movement. A protrusion and a flow path leading to the suction flow path; the support member includes a contact portion that contacts the protrusion; and the positioning mechanism may be realized by contact between the protrusion and the contact portion. Good. The above form can be realized as this form, for example.
（７）上記形態において、前記可動部材の外周面の一部であって、前記孔を塞ぐ指が接触する部位に、凹曲面が設けられていてもよい。この形態によれば、指で孔を塞ぎやすくなる。 (7) The said form WHEREIN: The concave curved surface may be provided in the site | part which is a part of outer peripheral surface of the said movable member, and the finger which plugs up the said hole contacts. According to this form, it becomes easy to close the hole with the finger.
（８）上記形態において、前記突起は、前記回転移動の中心に対し、前記凹曲面の反対側に配置されていてもよい。この形態によれば、孔が塞ぎやすくなる。孔を塞ぐために孔の周囲を指で押さえた際に、その力が接触部によって支持される。これによって、回転部材の変形が抑制されて、上記の効果を得ることができる。 (8) In the above aspect, the protrusion may be disposed on the opposite side of the concave curved surface with respect to the center of the rotational movement. According to this form, it becomes easy to close the hole. When the periphery of the hole is pressed with a finger to close the hole, the force is supported by the contact portion. As a result, deformation of the rotating member is suppressed, and the above effect can be obtained.
（９）上記形態において、前記可動部材の外周面にローレットが設けられていてもよい。この形態によれば、可動部材を回転させやすくなる。 (9) In the above embodiment, knurls may be provided on the outer peripheral surface of the movable member. According to this form, it becomes easy to rotate the movable member.
（１０）上記形態において、前記可動部材の幅は、１５ｍｍ以上２５ｍｍ以下でもよい。この形態によれば、標準的な手の大きさのユーザーにとって使いやすくなる。 (10) In the above embodiment, the width of the movable member may be not less than 15 mm and not more than 25 mm. According to this form, it becomes easy to use for a user having a standard hand size.
（１１）上記形態において、前記吸引力は、前記支持部材に接続された吸引チューブを介して、前記吸引流路に作用してもよい。この形態によれば、可動部材を回転させても、吸引チューブから反力を受けなくなる。 (11) In the above aspect, the suction force may act on the suction flow path via a suction tube connected to the support member. According to this embodiment, even if the movable member is rotated, the reaction force is not received from the suction tube.
　本発明は、上記以外の種々の形態で実現できる。例えば、液体噴射装置用アクチュエーターユニットと上記の液体噴射装置用ノズルユニットとを含む液体噴射装置用ハンドピースや、この液体噴射装置用ハンドピースと液体供給装置とを含む液体噴射装置として実現できる。 The present invention can be realized in various forms other than the above. For example, the present invention can be realized as a liquid ejecting apparatus handpiece including the liquid ejecting apparatus actuator unit and the liquid ejecting apparatus nozzle unit, or a liquid ejecting apparatus including the liquid ejecting apparatus handpiece and the liquid supply apparatus.
液体噴射装置の概略構成図。FIG. 2 is a schematic configuration diagram of a liquid ejecting apparatus. ハンドピースの斜視図（装着状態）。The perspective view of a handpiece (mounted state). ハンドピースの斜視図（分離状態）。The perspective view of a handpiece (separated state). ノズルユニットを示す斜視図。The perspective view which shows a nozzle unit. ハンドピースを示す断面図。Sectional drawing which shows a handpiece. ジョイント部及びアクチュエーターユニットの拡大断面図（装着状態）。The expanded sectional view of a joint part and an actuator unit (mounting state). ジョイント部及びアクチュエーターユニットの拡大断面図（分離状態）。The expanded sectional view of a joint part and an actuator unit (separated state). 液体室付近の拡大断面図（装着状態）。FIG. 4 is an enlarged cross-sectional view around the liquid chamber (mounted state). 液体室付近の拡大断面図（分離状態）。The expanded sectional view of the liquid chamber vicinity (separated state). 液体室側ダイヤフラム及び圧電素子側ダイヤフラムの溶接についての図。The figure about the welding of the liquid chamber side diaphragm and the piezoelectric element side diaphragm. 吸引力調整機構を示す斜視図。The perspective view which shows a suction force adjustment mechanism. 吸引力調整機構を示す断面図。Sectional drawing which shows a suction force adjustment mechanism. 図１２に示した１３－１３断面の端面図。FIG. 13 is an end view of a 13-13 cross section shown in FIG. 12. 図１２に示した１３－１３断面の端面図。FIG. 13 is an end view of a 13-13 cross section shown in FIG. 12. 図１２に示した１３－１３断面の端面図。FIG. 13 is an end view of a 13-13 cross section shown in FIG. 12. 回転部材と支持部材とを示す断面図（変形例１）。Sectional drawing which shows a rotation member and a supporting member (modification 1). 回転部材と支持部材とを示す断面図（変形例２）。Sectional drawing which shows a rotation member and a supporting member (modification 2). 回転部材と支持部材とを示す断面図（変形例３）。Sectional drawing which shows a rotation member and a supporting member (modification 3). 吸引力調整機構を示す斜視図（変形例４）。The perspective view which shows a suction force adjustment mechanism (modification 4). スライダーと流路部とが分解された様子を示す斜視図（変形例４）。The perspective view which shows a mode that the slider and the flow-path part were decomposed | disassembled (modification 4). 吸引力調整機構を示す断面図（変形例４）。Sectional drawing which shows a suction force adjustment mechanism (modification 4). 吸引力調整機構を示す断面図（変形例４）。Sectional drawing which shows a suction force adjustment mechanism (modification 4).
　初めに、図１～図１０を用いて、液体噴射装置２０の概略を説明することで、液体の噴射機構および吸引機構について説明する。 First, the liquid ejecting mechanism and the suction mechanism will be described by describing the outline of the liquid ejecting apparatus 20 with reference to FIGS.
　図１は、液体噴射装置２０の構成を概略的に示す。液体噴射装置２０は、医療機関において利用される医療機器であり、患部に対して液体を噴射することによって、患部を切除する機能を有する。 FIG. 1 schematically shows a configuration of the liquid ejecting apparatus 20. The liquid ejecting apparatus 20 is a medical device used in a medical institution, and has a function of excising an affected part by ejecting liquid onto the affected part.
　液体噴射装置２０は、制御部３０と、アクチュエーター用ケーブル３１と、ポンプ用ケーブル３２、フットスイッチ３５と、吸引装置４０と、吸引チューブ４１と、液体供給装置５０と、ハンドピース１００（操作部）とを備える。 The liquid ejecting apparatus 20 includes a control unit 30, an actuator cable 31, a pump cable 32, a foot switch 35, a suction device 40, a suction tube 41, a liquid supply device 50, and a handpiece 100 (operation unit). With.
　液体供給装置５０は、給水バッグ５１と、スパイク針５２と、第１～第５コネクター５３ａ～５３ｅと、第１～第４給水チューブ５４ａ～５４ｄと、ポンプチューブ５５と、閉塞検出機構５６と、フィルター５７とを備える。ハンドピース１００は、ノズルユニット２００と、アクチュエーターユニット３００とを備える。ノズルユニット２００は、噴射管２０５と、吸引管４００とを備える。 The liquid supply device 50 includes a water supply bag 51, a spike needle 52, first to fifth connectors 53a to 53e, first to fourth water supply tubes 54a to 54d, a pump tube 55, a blockage detection mechanism 56, And a filter 57. The handpiece 100 includes a nozzle unit 200 and an actuator unit 300. The nozzle unit 200 includes an ejection tube 205 and a suction tube 400.
　給水バッグ５１は、透明な合成樹脂製であり、内部に液体（具体的には生理食塩水）が充填されている。なお、本願では、水以外の液体が充填されていても、給水バッグ５１と呼ぶ。スパイク針５２は、第１コネクター５３ａを介して、第１給水チューブ５４ａに接続されている。給水バッグ５１にスパイク針５２が刺されると、給水バッグ５１に充填された液体が第１給水チューブ５４ａに供給可能な状態になる。 The water supply bag 51 is made of a transparent synthetic resin, and is filled with a liquid (specifically, physiological saline). In addition, in this application, even if it fills with liquids other than water, it calls the water supply bag 51. FIG. The spike needle 52 is connected to the first water supply tube 54a via the first connector 53a. When the spike needle 52 is stabbed into the water supply bag 51, the liquid filled in the water supply bag 51 can be supplied to the first water supply tube 54a.
　第１給水チューブ５４ａは、第２コネクター５３ｂを介して、ポンプチューブ５５に接続されている。ポンプチューブ５５は、第３コネクター５３ｃを介して、第２給水チューブ５４ｂに接続されている。チューブポンプ６０は、ポンプチューブ５５を、ステーターとローターとで挟み込んでいる。チューブポンプ６０は、内蔵するモーターの回転によって、複数のローラーを回転させることで、ポンプチューブ５５を扱（しご）く。このように扱かれることによって、ポンプチューブ５５内の液体は、第１給水チューブ５４ａ側から、第２給水チューブ５４ｂ側に送り出される。 The first water supply tube 54a is connected to the pump tube 55 via the second connector 53b. The pump tube 55 is connected to the second water supply tube 54b via the third connector 53c. The tube pump 60 sandwiches the pump tube 55 between the stator and the rotor. The tube pump 60 handles the pump tube 55 by rotating a plurality of rollers by rotation of a built-in motor. By being handled in this way, the liquid in the pump tube 55 is sent out from the first water supply tube 54a side to the second water supply tube 54b side.
　閉塞検出機構５６は、第２給水チューブ５４ｂ内の圧力を測定することで、第１～第４給水チューブ５４ａ～５４ｄ内の閉塞を検出する。 The blockage detection mechanism 56 detects the blockages in the first to fourth water supply tubes 54a to 54d by measuring the pressure in the second water supply tube 54b.
　第２給水チューブ５４ｂは、第４コネクター５３ｄを介して、第３給水チューブ５４ｃに接続されている。第３給水チューブ５４ｃにはフィルター５７が接続されている。フィルター５７は、液体に含まれる異物を捕集する。 The second water supply tube 54b is connected to the third water supply tube 54c via the fourth connector 53d. A filter 57 is connected to the third water supply tube 54c. The filter 57 collects foreign matters contained in the liquid.
　第３給水チューブ５４ｃは、第５コネクター５３ｅを介して、第４給水チューブ５４ｄに接続されている。第４給水チューブ５４ｄは、ハンドピース１００に接続されている。第４給水チューブ５４ｄを通じてハンドピース１００に供給された液体は、アクチュエーターユニット３００の駆動によって、噴射管２０５の先端に設けられたノズル２０７から間欠的に噴射される。このように液体が間欠的に噴射されることによって、少ない流量で切除能力が確保できる。 The third water supply tube 54c is connected to the fourth water supply tube 54d via the fifth connector 53e. The fourth water supply tube 54d is connected to the handpiece 100. The liquid supplied to the handpiece 100 through the fourth water supply tube 54d is intermittently ejected from the nozzle 207 provided at the tip of the ejection tube 205 by driving the actuator unit 300. In this way, the liquid is intermittently ejected, so that the resecting capability can be secured with a small flow rate.
　噴射管２０５及び吸引管４００は、噴射管２０５を内管、吸引管４００を外管とする二重管を構成する。吸引チューブ４１は、ノズルユニット２００に接続されている。吸引装置４０は、吸引チューブ４１を通じて、吸引管４００内を吸引する。この吸引によって、吸引管４００の先端付近の液体や切除片などが吸引される。 The injection tube 205 and the suction tube 400 constitute a double tube having the injection tube 205 as an inner tube and the suction tube 400 as an outer tube. The suction tube 41 is connected to the nozzle unit 200. The suction device 40 sucks the inside of the suction tube 400 through the suction tube 41. By this suction, liquid near the tip of the suction tube 400, a cut piece, and the like are sucked.
　制御部３０は、チューブポンプ６０と、アクチュエーターユニット３００とを制御する。具体的には、制御部３０は、フットスイッチ３５が踏まれている間、アクチュエーター用ケーブル３１と、ポンプ用ケーブル３２とを介して駆動信号を送信する。アクチュエーター用ケーブル３１を介して送信された駆動信号は、アクチュエーターユニット３００を駆動させる。ポンプ用ケーブル３２を介して送信された駆動信号は、チューブポンプ６０を駆動させる。よって、ユーザーがフットスイッチ３５を踏んでいる間は液体が間欠的に噴射され、ユーザーがフットスイッチ３５を踏んでいない間は液体の噴射が停止する。 The control unit 30 controls the tube pump 60 and the actuator unit 300. Specifically, the control unit 30 transmits a drive signal via the actuator cable 31 and the pump cable 32 while the foot switch 35 is depressed. The drive signal transmitted via the actuator cable 31 drives the actuator unit 300. The drive signal transmitted via the pump cable 32 drives the tube pump 60. Therefore, the liquid is intermittently ejected while the user steps on the foot switch 35, and the liquid ejection stops while the user does not step on the foot switch 35.
　図２及び図３は、ハンドピース１００の斜視図である。
　図２は、アクチュエーターユニット３００がノズルユニット２００に装着された状態（以下「装着状態」という）を示す。図３は、アクチュエーターユニット３００とノズルユニット２００とが分離された状態（以下「分離状態」という）を示す。 2 and 3 are perspective views of the handpiece 100. FIG.
FIG. 2 shows a state where the actuator unit 300 is attached to the nozzle unit 200 (hereinafter referred to as “attached state”). FIG. 3 shows a state where the actuator unit 300 and the nozzle unit 200 are separated (hereinafter referred to as “separated state”).
　アクチュエーターユニット３００は、ノズルユニット２００に対して着脱できるように構成されている。アクチュエーターユニット３００がノズルユニット２００に対して装着されて、アクチュエーターユニット３００とノズルユニット２００とが一体となることで、ハンドピース１００として機能する。 The actuator unit 300 is configured to be detachable from the nozzle unit 200. The actuator unit 300 is attached to the nozzle unit 200, and the actuator unit 300 and the nozzle unit 200 are integrated to function as the handpiece 100.
　ノズルユニット２００は、内部に液体が流れるので、手術毎に交換される。さらに、液体供給装置５０に含まれる構成要素のうち、内部に液体が流れるもの（給水バッグ５１、第１～第４給水チューブ５４ａ～５４ｄ、ポンプチューブ５５等）は、手術毎に交換される。アクチュエーターユニット３００は、液体に触れないので、滅菌処理や洗浄処理を施すことにより複数回の手術で使用できる。 The nozzle unit 200 is replaced every operation because the liquid flows inside. Further, among the components included in the liquid supply device 50, the ones in which the liquid flows (the water supply bag 51, the first to fourth water supply tubes 54a to 54d, the pump tube 55, etc.) are replaced every operation. Since the actuator unit 300 does not touch the liquid, it can be used in a plurality of operations by performing a sterilization process or a cleaning process.
　ノズルユニット２００は、先述した噴射管２０５と吸引管４００とに加え、ハンドピースケース２１０と、ジョイント部２５０と、吸引力調整機構５００とを備える。ハンドピースケース２１０は、ユーザーに把持されるグリップとしての機能と、流路を内部に保持する機能とを有する。この流路とは、先述したように、噴射される液体および吸引される液体が流れる流路のことである。 The nozzle unit 200 includes a handpiece case 210, a joint portion 250, and a suction force adjusting mechanism 500 in addition to the above-described injection tube 205 and suction tube 400. The handpiece case 210 has a function as a grip held by the user and a function of holding the flow path inside. This flow path is a flow path through which the liquid to be ejected and the liquid to be sucked flow as described above.
　吸引力調整機構５００は、ハンドピース１００に設けられており、孔５２２を備える。孔５２２の開口面積が変化すると、吸引管４００による吸引力が変化する（図５と共に詳述）。ジョイント部２５０は、ノズルユニット２００に対してアクチュエーターユニット３００を着脱するための部位である。 The suction force adjusting mechanism 500 is provided in the handpiece 100 and includes a hole 522. When the opening area of the hole 522 changes, the suction force by the suction pipe 400 changes (detailed with FIG. 5). The joint part 250 is a part for attaching / detaching the actuator unit 300 to / from the nozzle unit 200.
　アクチュエーターユニット３００は、連結部３１０と駆動部３５０とを備える。連結部３１０は、アクチュエーター用ケーブル３１と駆動部３５０とを、機械的および電気的に連結している。駆動部３５０は、液体を間欠的に噴射するための駆動力を発生する。 The actuator unit 300 includes a connecting part 310 and a driving part 350. The connecting portion 310 mechanically and electrically connects the actuator cable 31 and the drive portion 350. The driving unit 350 generates a driving force for intermittently ejecting the liquid.
　図４は、ノズルユニット２００を示す斜視図である。図４は、吸引管４００がハンドピースケース２１０から取り外された状態を示す。ハンドピース１００は、吸引管４００が取り外された状態で使用されてもよい。吸引管４００が取り外された状態では、吸引管４００を用いた吸引はできないものの、噴射管２０５からの液体の噴射はできる。 FIG. 4 is a perspective view showing the nozzle unit 200. FIG. 4 shows a state in which the suction tube 400 is removed from the handpiece case 210. The handpiece 100 may be used with the suction tube 400 removed. In a state where the suction tube 400 is removed, suction using the suction tube 400 is not possible, but liquid can be ejected from the ejection tube 205.
　吸引管４００は、凸部４１０を備える。凸部４１０は、吸引管４００をハンドピースケース２１０に装着するための部位である。 The suction tube 400 includes a convex portion 410. The convex part 410 is a part for attaching the suction tube 400 to the handpiece case 210.
　ハンドピースケース２１０には、図１と共に説明したように、第４給水チューブ５４ｄが接続されている。なお、図２及び図３は、視線の関係で、第４給水チューブ５４ｄを示していない。 As described with reference to FIG. 1, the fourth water supply tube 54 d is connected to the handpiece case 210. 2 and 3 do not show the fourth water supply tube 54d because of the line of sight.
　図５は、ハンドピース１００を示す断面図である。第４給水チューブ５４ｄは、ハンドピースケース２１０内部でＵ字状に屈曲し、入口流路２４１に接続されている。入口流路２４１は、液体室２４０（図８、図９参照）を介して、噴射管２０５に通じている。 FIG. 5 is a cross-sectional view showing the handpiece 100. The fourth water supply tube 54d is bent in a U shape inside the handpiece case 210 and connected to the inlet channel 241. The inlet channel 241 communicates with the ejection pipe 205 via the liquid chamber 240 (see FIGS. 8 and 9).
　入口流路２４１の流路径は、噴射管２０５の流路径よりも小さい。このため、液体室２４０内の圧力が変動しても（後述）、液体室２４０内の液体が入口流路２４１に逆流することが抑制される。 The channel diameter of the inlet channel 241 is smaller than the channel diameter of the injection pipe 205. For this reason, even if the pressure in the liquid chamber 240 fluctuates (described later), the liquid in the liquid chamber 240 is prevented from flowing back into the inlet channel 241.
　ハンドピースケース２１０は、先端に凹部２１１を備える。吸引管４００の装着は、凸部４１０が凹部２１１に嵌合することで実現される。装着された吸引管４００は、吸引流路部２３０に通じている。吸引流路部２３０は、吸引力調整機構５００を介して、吸引チューブ４１に接続されている。 The handpiece case 210 has a recess 211 at the tip. The attachment of the suction pipe 400 is realized by fitting the convex portion 410 into the concave portion 211. The attached suction tube 400 communicates with the suction flow path section 230. The suction flow path unit 230 is connected to the suction tube 41 via the suction force adjustment mechanism 500.
　ユーザーは、孔５２２を利用して、吸引管４００による吸引力の調整ができる。具体的には、孔５２２が開放されている面積を小さくすれば、孔５２２から流入する空気の流量も小さくなるので、吸引管４００を介して吸引される流体（空気や液体等）の流量が大きくなる。つまり、吸引管４００による吸引力が大きくなる。逆に、孔５２２が開放されている面積を大きくすれば、孔５２２から流入する空気の流量も大きくなるので、吸引管４００による吸引力が小さくなる。通常、ユーザーは、孔５２２の開放面積の調整を、親指によって孔５２２を塞ぐ面積を調整することによって実現する。孔５２２が全く覆われていない状態では、吸引管４００による吸引力が微小になるように、又は吸引力が全く作用しないように、孔５２２の形状が設計されている。本実施形態においては、吸引管４００の流路面積が孔５２２の開口面積より大きいものの、吸引管４００の長さを孔５２２の長さよりも長くすることで吸引管４００の流路抵抗を孔５２２の流路抵抗よりも大きくしている。こうすることで孔５２２が全く覆われていない場合に、吸引管４００による吸引力を微小とすることができる。 The user can adjust the suction force by the suction tube 400 using the hole 522. Specifically, if the area where the hole 522 is opened is reduced, the flow rate of air flowing in from the hole 522 is also reduced, so that the flow rate of fluid (air, liquid, etc.) sucked through the suction pipe 400 is reduced. growing. That is, the suction force by the suction pipe 400 is increased. On the contrary, if the area where the hole 522 is opened is increased, the flow rate of the air flowing from the hole 522 is also increased, so that the suction force by the suction pipe 400 is reduced. Usually, the user adjusts the open area of the hole 522 by adjusting the area where the hole 522 is closed by the thumb. In a state where the hole 522 is not covered at all, the shape of the hole 522 is designed so that the suction force by the suction pipe 400 becomes minute or no suction force acts. In this embodiment, although the flow area of the suction pipe 400 is larger than the opening area of the hole 522, the flow resistance of the suction pipe 400 is reduced by making the length of the suction pipe 400 longer than the length of the hole 522. It is larger than the flow path resistance. In this way, when the hole 522 is not covered at all, the suction force by the suction tube 400 can be made minute.
　図５に示すように、ハンドピースケース２１０に対して長手方向が定義される。長手方向とは、図５に示した断面内に含まれる方向であって、所定の姿勢の際の水平方向である。所定の姿勢とは、ユーザーが手の平を上に向けてから、その手でハンドピース１００を握った際の姿勢である。本実施形態における長手方向は、吸引流路部２３０の流路方向と一致する。吸引流路部２３０の流路方向とは、吸引流路部２３０が吸引力調整機構５００と接触している部位における吸引流路部２３０内の流れの方向である。 As shown in FIG. 5, the longitudinal direction is defined with respect to the handpiece case 210. The longitudinal direction is a direction included in the cross section shown in FIG. 5 and is a horizontal direction in a predetermined posture. The predetermined posture is a posture when the user holds the handpiece 100 with the hand after the palm is turned up. The longitudinal direction in the present embodiment matches the flow path direction of the suction flow path section 230. The flow path direction of the suction flow path section 230 is a flow direction in the suction flow path section 230 at a portion where the suction flow path section 230 is in contact with the suction force adjustment mechanism 500.
　図６及び図７は、ジョイント部２５０及びアクチュエーターユニット３００付近を拡大して示す断面図である。図６は、装着状態を示す。図７は、分離状態を示す。 6 and 7 are enlarged sectional views showing the vicinity of the joint portion 250 and the actuator unit 300. FIG. FIG. 6 shows a mounted state. FIG. 7 shows a separated state.
　駆動部３５０は、ハウジング３５１と、固定部材３５３と、圧電素子３６０と、可動板３６１とを備える。ハウジング３５１は、円筒状の部材である。可動板３６１は、ピストン３６２と、駆動側ダイヤフラム３６４とを含む。 The driving unit 350 includes a housing 351, a fixed member 353, a piezoelectric element 360, and a movable plate 361. The housing 351 is a cylindrical member. The movable plate 361 includes a piston 362 and a drive side diaphragm 364.
　圧電素子３６０は、積層型圧電素子である。圧電素子３６０は、伸縮する方向がハウジング３５１の長手方向に沿うように、ハウジング３５１内に配置されている。本実施形態における圧電素子３６０は、ほぼ正四角柱形状であり、３．５ｍｍ四方で、高さが１８ｍｍである。 Piezoelectric element 360 is a laminated piezoelectric element. The piezoelectric element 360 is disposed in the housing 351 so that the extending and contracting direction is along the longitudinal direction of the housing 351. The piezoelectric element 360 in the present embodiment has a substantially regular quadrangular prism shape, is 3.5 mm square, and has a height of 18 mm.
　固定部材３５３は、ハウジング３５１の一端に固定されている。圧電素子３６０は、固定部材３５３に接着剤によって固定されている。 The fixing member 353 is fixed to one end of the housing 351. The piezoelectric element 360 is fixed to the fixing member 353 with an adhesive.
　駆動側ダイヤフラム３６４の素材は、金属であり、具体的にはステンレス鋼であり、さらに具体的にはＳＵＳ３０４又はＳＵＳ３１６Ｌである。駆動側ダイヤフラム３６４は、圧電素子３６０のプリロード（後述）を実施するために厚めに形成される（例えば３００μｍ）。また、圧電素子３６０が金属製で、且つ厚めに形成されているので、ピストン３６２に押された際に、滑らかに湾曲する。このため、装着状態において、液体室側ダイヤフラム２６０も滑らかに変形させることができる。 The material of the drive side diaphragm 364 is a metal, specifically stainless steel, and more specifically SUS304 or SUS316L. The drive side diaphragm 364 is formed thicker (for example, 300 μm) in order to preload the piezoelectric element 360 (described later). Further, since the piezoelectric element 360 is made of metal and is formed thick, it is smoothly curved when pushed by the piston 362. For this reason, the liquid chamber side diaphragm 260 can also be smoothly deformed in the mounted state.
　駆動側ダイヤフラム３６４は、ハウジング３５１の他端を覆うように配置され、ハウジング３５１に溶接によって固定されている。 The drive side diaphragm 364 is disposed so as to cover the other end of the housing 351 and is fixed to the housing 351 by welding.
　ピストン３６２は、圧電素子３６０の一端に接着剤によって固定されていると共に、駆動側ダイヤフラム３６４に接触するように配置されている。ピストン３６２は、異なる径の円柱が、同心円として積層したような形状をしている。小さい径の方が、駆動側ダイヤフラム３６４と接触している。このため、駆動側ダイヤフラム３６４は、端の方が押されず、溶接箇所には大きな力が作用しないようになっている。ピストン３６２及び駆動側ダイヤフラム３６４は、接着剤等によって固定されてはおらず、接触しているのみである。 The piston 362 is fixed to one end of the piezoelectric element 360 with an adhesive and is disposed so as to contact the drive side diaphragm 364. The piston 362 has a shape in which cylinders having different diameters are stacked as concentric circles. The smaller diameter is in contact with the drive side diaphragm 364. For this reason, the drive side diaphragm 364 is not pushed toward the end, and a large force does not act on the welded portion. The piston 362 and the drive side diaphragm 364 are not fixed by an adhesive or the like but are only in contact with each other.
　ハウジング３５１の外周には、雄ネジ部３５１ａが設けられている。分離状態から装着状態への移行は、雄ネジ部３５１ａを、ジョイント部２５０に設けられた雌ネジ部２５３に締め付けることで実現される。 A male screw portion 351a is provided on the outer periphery of the housing 351. The transition from the separated state to the mounted state is realized by tightening the male screw portion 351a to the female screw portion 253 provided in the joint portion 250.
　連結部３１０は、第１ケース３１１と、第２ケース３１２と、第３ケース３１３と、保持部材３１４と、金属板３１５と、第１ネジ３１６と、第２ネジ３１７と、第３ネジ３１８とを備える。なお金属板３１５は中継基板３１５と言い換えることもできる。 The connecting portion 310 includes a first case 311, a second case 312, a third case 313, a holding member 314, a metal plate 315, a first screw 316, a second screw 317, and a third screw 318. Is provided. Note that the metal plate 315 can also be referred to as the relay substrate 315.
　第１ケース３１１は、第１ネジ３１６によって、固定部材３５３に固定されている。第２ケース３１２は、第２ネジ３１７と第３ネジ３１８とによって、第１ケース３１１に固定されている。２枚の金属板３１５は、第１ケース３１１内に挿入（収容）されている。 The first case 311 is fixed to the fixing member 353 by the first screw 316. The second case 312 is fixed to the first case 311 by a second screw 317 and a third screw 318. The two metal plates 315 are inserted (accommodated) in the first case 311.
　保持部材３１４は、アクチュエーター用ケーブル３１の端部付近に加締められることによって固定されている。第３ケース３１３は、第２ケース３１２と保持部材３１４とを連結するための部材である。第３ケース３１３は、保持部材３１４の外径が膨らんだ部位を引っ掛けた状態で、第２ケース３１２に固定されている。 The holding member 314 is fixed by being crimped near the end of the actuator cable 31. The third case 313 is a member for connecting the second case 312 and the holding member 314. The third case 313 is fixed to the second case 312 in a state where the portion where the outer diameter of the holding member 314 is expanded is hooked.
　アクチュエーター用ケーブル３１は、上記のように固定された状態で、２枚の金属板３１５と導通するように接続される。金属板３１５は、圧電素子３６０の正極、負極それぞれに、配線（図示しない）によって接続される。 The actuator cable 31 is connected so as to be electrically connected to the two metal plates 315 while being fixed as described above. The metal plate 315 is connected to the positive electrode and the negative electrode of the piezoelectric element 360 by wiring (not shown).
　圧電素子３６０は、アクチュエーター用ケーブル３１、金属板３１５及び上記の配線を介して入力される駆動信号に応じて伸縮する。圧電素子３６０が伸縮すると、ピストン３６２が圧電素子３６０の長手方向に振動する。ピストン３６２が振動すると、駆動側ダイヤフラム３６４は、この振動に追従して変形する。 Piezoelectric element 360 expands and contracts in response to a drive signal input via actuator cable 31, metal plate 315, and the above wiring. When the piezoelectric element 360 expands and contracts, the piston 362 vibrates in the longitudinal direction of the piezoelectric element 360. When the piston 362 vibrates, the drive side diaphragm 364 is deformed following the vibration.
　圧電素子３６０は、伸縮を適切に実施するために、プリロードされた状態で組み付けられている。プリロードされた状態とは、圧電素子３６０が駆動側ダイヤフラム３６４に向けて押しつけられ、圧電素子３６０が伸縮方向に圧縮された状態のことである。プリロードの荷重は、圧電素子３６０の最大発生力の１０～５０％であり、具体的には４０～２００Ｎである。このため、圧電素子３６０に駆動信号が入力されていない状態においても、駆動側ダイヤフラム３６４は、ピストン３６２を介して、圧電素子３６０から力を受ける。駆動側ダイヤフラム３６４が金属製で、液体室側ダイヤフラム２６０よりも厚く形成されているのは、プリロードを保持するためである。 The piezoelectric element 360 is assembled in a preloaded state in order to appropriately perform expansion and contraction. The preloaded state is a state in which the piezoelectric element 360 is pressed toward the driving diaphragm 364 and the piezoelectric element 360 is compressed in the expansion / contraction direction. The preload load is 10 to 50% of the maximum generated force of the piezoelectric element 360, specifically 40 to 200N. For this reason, even when a drive signal is not input to the piezoelectric element 360, the drive side diaphragm 364 receives force from the piezoelectric element 360 via the piston 362. The reason that the drive side diaphragm 364 is made of metal and is thicker than the liquid chamber side diaphragm 260 is to hold the preload.
　上記のように駆動側ダイヤフラム３６４が変形しているため、駆動側ダイヤフラム３６４は、ピストン３６２と接着されていなくても、圧電素子３６０の収縮に追従して変形できる。 Since the drive side diaphragm 364 is deformed as described above, the drive side diaphragm 364 can be deformed following the contraction of the piezoelectric element 360 even if it is not bonded to the piston 362.
　図８及び図９は、液体室２４０付近を拡大して示す断面図である。図８は、装着状態を示す。図９は、分離状態を示す。 8 and 9 are cross-sectional views showing the vicinity of the liquid chamber 240 in an enlarged manner. FIG. 8 shows a mounted state. FIG. 9 shows the separated state.
　ジョイント部２５０の内部には、液体室２４０が設けられている。液体室２４０は、窪み２４４に、液体室側ダイヤフラム２６０が覆い被さることで形成される。窪み２４４は、ジョイント部２５０において、薄く円形状に窪んだ部位である。液体室側ダイヤフラム２６０は、圧電素子３６０の伸縮に応じて変形しやすいように、駆動側ダイヤフラム３６４よりも薄く形成される（例えば５０～１００μｍ）。液体室側ダイヤフラム２６０は、直径が１３～１５ｍｍであり、ジョイント部２５０に溶接によって固定されている。溶接位置は、図９に示される溶接Ｙ１として示されている。液体室側ダイヤフラム２６０の素材は、金属であり、具体的にはステンレス鋼であり、さらに具体的にはＳＵＳ３０４又はＳＵＳ３１６Ｌである。 A liquid chamber 240 is provided inside the joint portion 250. The liquid chamber 240 is formed by covering the recess 244 with the liquid chamber side diaphragm 260. The recess 244 is a portion that is thin and circularly recessed in the joint portion 250. The liquid chamber side diaphragm 260 is formed thinner than the driving side diaphragm 364 (for example, 50 to 100 μm) so as to be easily deformed in accordance with expansion and contraction of the piezoelectric element 360. The liquid chamber side diaphragm 260 has a diameter of 13 to 15 mm, and is fixed to the joint portion 250 by welding. The welding position is shown as welding Y1 shown in FIG. The material of the liquid chamber side diaphragm 260 is a metal, specifically stainless steel, and more specifically SUS304 or SUS316L.
　図８に示すように、液体室側ダイヤフラム２６０及び駆動側ダイヤフラム３６４は、装着状態において接触する。このため、先述したように駆動側ダイヤフラム３６４が変形すると、液体室側ダイヤフラム２６０も同様に変形する。 As shown in FIG. 8, the liquid chamber side diaphragm 260 and the drive side diaphragm 364 are in contact with each other in the mounted state. For this reason, as described above, when the driving side diaphragm 364 is deformed, the liquid chamber side diaphragm 260 is similarly deformed.
　駆動側ダイヤフラム３６４が変形すると、液体室２４０の容積が変動する。この変動によって、液体室２４０内に満たされた液体の圧力が変動する。液体室２４０内の圧力が低下した際には、入口流路２４１から液体が液体室２４０に流入する。液体室２４０内の圧力が上昇した際には、液体が液体室２４０から噴射管２０５に流出する。噴射管２０５に流出した液体は、噴射管２０５の先端から噴射される。液体室２４０内の圧力が上昇するのは間欠的なので、噴射管２０５からの液体の噴射は間欠的に実施される。 When the drive side diaphragm 364 is deformed, the volume of the liquid chamber 240 changes. Due to this variation, the pressure of the liquid filled in the liquid chamber 240 varies. When the pressure in the liquid chamber 240 decreases, the liquid flows into the liquid chamber 240 from the inlet channel 241. When the pressure in the liquid chamber 240 increases, the liquid flows out from the liquid chamber 240 to the ejection pipe 205. The liquid that has flowed out to the ejection tube 205 is ejected from the tip of the ejection tube 205. Since the pressure in the liquid chamber 240 rises intermittently, the liquid is ejected from the ejection pipe 205 intermittently.
　上記のように、液体室側ダイヤフラム２６０及び駆動側ダイヤフラム３６４は、一体となって変形する。つまり、液体室側ダイヤフラム２６０及び可動板３６１は、一体となって変形する。図８に示された符号４６０は、このように一体となって変形する液体室側ダイヤフラム２６０と可動板３６１とを合わせた合成ダイヤフラム４６０を示す。合成ダイヤフラム４６０は、装着状態において、１つのダイヤフラムと捉えることができる。 As described above, the liquid chamber side diaphragm 260 and the drive side diaphragm 364 are integrally deformed. That is, the liquid chamber side diaphragm 260 and the movable plate 361 are integrally deformed. Reference numeral 460 shown in FIG. 8 indicates a composite diaphragm 460 in which the liquid chamber side diaphragm 260 and the movable plate 361 that are integrally deformed in this manner are combined. The composite diaphragm 460 can be regarded as one diaphragm in the mounted state.
　図１０は、液体室側ダイヤフラム２６０及び駆動側ダイヤフラム３６４の溶接について説明するための図である。ハウジング３５１には、図１０に示すように面取り３５１ｂが設けられている。面取り３５１ｂは、液体室側ダイヤフラム２６０を固定する溶接Ｙ１とハウジング３５１とが干渉しないように設けられている。 FIG. 10 is a view for explaining the welding of the liquid chamber side diaphragm 260 and the driving side diaphragm 364. The housing 351 is provided with a chamfer 351b as shown in FIG. The chamfer 351b is provided so that the weld Y1 that fixes the liquid chamber side diaphragm 260 and the housing 351 do not interfere with each other.
　図１０に示すように、ハウジング３５１の先端は、駆動側ダイヤフラム３６４の先端よりも寸法Ｃだけ引っ込んでいる。この結果、装着状態において、液体室側ダイヤフラム２６０とハウジング３５１との間にクリアランスが発生する。駆動側ダイヤフラム３６４を固定する溶接Ｙ２の溶接痕が、このクリアランスに位置するように、溶接を実施することで、溶接Ｙ２と液体室側ダイヤフラム２６０との干渉が回避されている。 As shown in FIG. 10, the front end of the housing 351 is retracted by a dimension C from the front end of the drive side diaphragm 364. As a result, a clearance is generated between the liquid chamber side diaphragm 260 and the housing 351 in the mounted state. By performing welding so that the weld mark of the weld Y2 that fixes the drive side diaphragm 364 is located in this clearance, interference between the weld Y2 and the liquid chamber side diaphragm 260 is avoided.
　図１０に示された符号２５５は、他の形態において設けられる逃がし部２５５を示す。本実施形態では、図８，図９等に示すように、逃がし部２５５は設けられていない。逃がし部２５５は、ジョイント部２５０の内周において、壁が内部に向かってえぐれた部位である。逃がし部２５５を設けることによって、雌ネジ部２５３の加工が容易になる。 The code | symbol 255 shown by FIG. 10 shows the escape part 255 provided in another form. In this embodiment, as shown in FIG. 8, FIG. 9, etc., the escape part 255 is not provided. The relief portion 255 is a portion of the inner periphery of the joint portion 250 where the wall is sunk toward the inside. By providing the relief portion 255, the internal thread portion 253 can be easily processed.
　以下、吸引力調整機構５００について説明する。 Hereinafter, the suction force adjusting mechanism 500 will be described.
　図１１は、吸引力調整機構５００を示す斜視図である。図１２は、吸引力調整機構５００を示す断面図であり、吸引チューブ４１と、吸引流路部２３０とが接続された状態を示す。 FIG. 11 is a perspective view showing the suction force adjusting mechanism 500. FIG. 12 is a cross-sectional view showing the suction force adjusting mechanism 500, and shows a state where the suction tube 41 and the suction flow path section 230 are connected.
　吸引力調整機構５００は、回転部材５２０（可動部材）と、支持部材５４０と、Ｏリング５６０とを備える。支持部材５４０は、ハンドピースケース２１０に固定されている。回転部材５２０は、支持部材５４０に回転可能に支持されている。Ｏリング５６０は、回転部材５２０と支持部材５４０との隙間に配置されている。 The suction force adjusting mechanism 500 includes a rotating member 520 (movable member), a supporting member 540, and an O-ring 560. The support member 540 is fixed to the handpiece case 210. The rotating member 520 is rotatably supported by the support member 540. The O-ring 560 is disposed in the gap between the rotating member 520 and the support member 540.
　回転部材５２０は、孔５２２と、操作面５２４と、第１嵌合孔５２５ａと、第２嵌合孔５２５ｂと、ローレット５２６と、張り出し部５２７と、突起５２８と、流路５２９とを備える。支持部材５４０は、継手５４１と、回転軸５４５と、貫通孔５４６と、接触部５４８とを備える。 The rotating member 520 includes a hole 522, an operation surface 524, a first fitting hole 525 a, a second fitting hole 525 b, a knurl 526, an overhang portion 527, a protrusion 528, and a flow path 529. The support member 540 includes a joint 541, a rotation shaft 545, a through hole 546, and a contact portion 548.
　第１嵌合孔５２５ａは、回転軸５４５に嵌合している。第２嵌合孔５２５ｂは、吸引流路部２３０に嵌合している。吸引流路部２３０は、貫通孔５４６を貫通しているので、貫通孔５４６に支持されている。吸引流路部２３０の流路方向は、回転軸５４５と同軸に配置されている。これらの構成によって、回転部材５２０が回転可能に支持されている。なお、回転部材５２０が回転しても、吸引流路部２３０は回転しない。よって、回転部材５２０が回転する際に、第２嵌合孔５２５ｂは、吸引流路部２３０と擦れあう。 The first fitting hole 525a is fitted to the rotating shaft 545. The second fitting hole 525b is fitted to the suction flow path portion 230. Since the suction channel portion 230 passes through the through hole 546, it is supported by the through hole 546. The flow path direction of the suction flow path section 230 is arranged coaxially with the rotation shaft 545. With these configurations, the rotating member 520 is rotatably supported. In addition, even if the rotation member 520 rotates, the suction flow path part 230 does not rotate. Therefore, when the rotating member 520 rotates, the second fitting hole 525b rubs against the suction flow path portion 230.
　操作面５２４は、親指によって孔５２２を塞ぎやすいように設けられた滑らかな凹曲面である。ローレット５２６は、回転部材５２０を親指によって回転させやすいように設けられた複数の凹凸で構成された部位である。流路５２９は、吸引流路部２３０内と吸引チューブ４１内とを接続するための流路である。 The operation surface 524 is a smooth concave curved surface provided so as to easily close the hole 522 with the thumb. The knurl 526 is a portion configured by a plurality of projections and depressions provided so that the rotating member 520 can be easily rotated by the thumb. The channel 529 is a channel for connecting the inside of the suction channel unit 230 and the inside of the suction tube 41.
　継手５４１は、吸引チューブ４１を接続するための中空の突起である。継手５４１が支持部材５４０に設けられているため、回転部材５２０が回転しても、継手５４１に接続された吸引チューブ４１がトルクを受けることはない。このため、回転部材５２０の回転を吸引チューブ４１によって阻害されたり、吸引チューブ４１に連れ回って回転部材５２０が意図せず回転したりすることが無い。 The joint 541 is a hollow protrusion for connecting the suction tube 41. Since the joint 541 is provided on the support member 540, the suction tube 41 connected to the joint 541 does not receive torque even when the rotating member 520 rotates. For this reason, the rotation of the rotation member 520 is not hindered by the suction tube 41, and the rotation member 520 does not rotate unintentionally with the suction tube 41.
　突起５２８及び接触部５４８は、回転部材５２０の回転位置を安定させるための機構を構成する。（図１３，図１４，図１５と共に後述）。張り出し部５２７についても図１３，図１４，図１５と共に後述する。 The protrusion 528 and the contact portion 548 constitute a mechanism for stabilizing the rotational position of the rotating member 520. (It will be described later together with FIGS. 13, 14, and 15). The overhang portion 527 will also be described later with reference to FIGS. 13, 14, and 15.
　図１３，図１４，図１５は、図１２に示した１３－１３断面の端面図である。この断面は、長手方向と、吸引流路部２３０の流路方向とのそれぞれに直交する。突起５２８は、先端が丸みを帯びており、操作面５２４と対向するように配置されている。 FIGS. 13, 14, and 15 are end views of the 13-13 cross section shown in FIG. This cross section is orthogonal to each of the longitudinal direction and the flow path direction of the suction flow path section 230. The protrusion 528 has a rounded tip and is disposed so as to face the operation surface 524.
　接触部５４８は、山と谷とが交互に設けられている。山の頂点は、同じ円弧上に配置されている。図１３，図１４，図１５に示すように、突起５２８が接触部５４８の２つの斜面に接触している状態では、回転部材５２０の回転位置が安定する。 The contact part 548 is provided with mountains and valleys alternately. The peaks are located on the same arc. As shown in FIGS. 13, 14, and 15, when the protrusion 528 is in contact with the two inclined surfaces of the contact portion 548, the rotational position of the rotating member 520 is stable.
　ユーザーは、親指によって回転部材５２０を回転させることができる。ユーザーが回転部材５２０にトルクを負荷すると、回転部材５２０と支持部材５４０とが弾性変形する。そして突起５２８が接触部５４８の山を乗り越えると、突起５２８は、隣の斜面間に移動する。 The user can rotate the rotating member 520 with the thumb. When the user applies torque to the rotating member 520, the rotating member 520 and the support member 540 are elastically deformed. When the protrusion 528 climbs over the mountain of the contact portion 548, the protrusion 528 moves between adjacent slopes.
　ユーザーは、突起５２８が隣の斜面間に移動すると、回転部材５２０に触れている指を介して、クリック感を覚える。クリック感とは、回転部材５２０が別の回転位置に移行した感覚のことである。さらに、回転部材５２０の回転に伴って音が発生する。ユーザーは、この音によってもクリック感を覚える。 When the protrusion 528 moves between adjacent slopes, the user feels a click feeling through the finger touching the rotating member 520. The click feeling is a sense that the rotating member 520 has moved to another rotational position. Furthermore, a sound is generated with the rotation of the rotating member 520. The user also feels a click with this sound.
　上記のクリック感の強さは、挿入深さに依存する。挿入深さとは、回転部材５２０の回転における半径方向の距離であって、接触部５４８の山頂の位置から、突起５２８と斜面との接触位置までの距離である。実施形態における挿入深さは、図１３に示すように、深さＤ１に設定されている。 The strength of the above click feeling depends on the insertion depth. The insertion depth is a distance in the radial direction in the rotation of the rotation member 520 and is a distance from the position of the peak of the contact portion 548 to the contact position between the protrusion 528 and the inclined surface. The insertion depth in the embodiment is set to the depth D1, as shown in FIG.
　張り出し部５２７は、回転部材５２０と支持部材５４０との隙間を狭くするために設けられている。張り出し部５２７は、回転における半径方向に張り出した部位である。 The overhang portion 527 is provided to narrow the gap between the rotating member 520 and the support member 540. The projecting portion 527 is a portion projecting in the radial direction in rotation.
　図１３に示された幅Ｗは、回転部材５２０の幅を表す。幅Ｗは、孔５２２の貫通方向および流路５２９の流路方向に直交する方向の回転部材５２０の全幅である。流路５２９の流路方向は、吸引流路部２３０の流路方向に一致している。本実施形態における幅Ｗは、１５ｍｍ以上２５ｍｍ以下に設定されており、標準的な手の大きさのユーザーにとって使いやすくなっている。 13 represents the width of the rotating member 520. The width W is the entire width of the rotating member 520 in the direction orthogonal to the direction of penetration of the hole 522 and the direction of the flow path of the flow path 529. The flow path direction of the flow path 529 coincides with the flow path direction of the suction flow path section 230. The width W in this embodiment is set to 15 mm or more and 25 mm or less, and is easy to use for a user having a standard hand size.
　本実施形態によれば、ユーザーは、孔５２２の回転位置を変更できる。よって、ユーザーは、自身の指にフィットする位置に孔５２２の回転位置を調整したり、手術の状況に応じて孔５２２の回転位置を調整したりできる。 According to this embodiment, the user can change the rotational position of the hole 522. Therefore, the user can adjust the rotation position of the hole 522 to a position that fits his / her finger, or can adjust the rotation position of the hole 522 according to the situation of the operation.
　さらに、回転部材５２０の回転中心が、長手方向および吸引流路部２３０の流路方向と一致しているので、ユーザーは、親指で回転部材５２０を回転させやすい。 Furthermore, since the center of rotation of the rotating member 520 coincides with the longitudinal direction and the flow path direction of the suction flow path section 230, the user can easily rotate the rotating member 520 with the thumb.
　変形例１を説明する。図１６は、回転部材５２０と支持部材５４０ａとを示す断面図である。支持部材５４０ａは、実施形態の支持部材５４０の代わりに用いられる。支持部材５４０ａは、接触部５４８ａを備える。接触部５４８ａは、挿入深さが深さＤ２である。深さＤ２は、実施形態の深さＤ１よりも浅い。さらに、接触部５４８ａの山は、なだらかな形状に設計されている。これらの特徴によって、実施形態よりも、回転部材５２０が回転しやすくなっていると共に、クリック感が抑制されている。 Modification 1 will be described. FIG. 16 is a cross-sectional view showing the rotating member 520 and the support member 540a. The support member 540a is used instead of the support member 540 of the embodiment. The support member 540a includes a contact portion 548a. The contact portion 548a has an insertion depth D2. The depth D2 is shallower than the depth D1 of the embodiment. Further, the mountain of the contact portion 548a is designed to have a gentle shape. With these features, the rotating member 520 is easier to rotate than in the embodiment, and the click feeling is suppressed.
　変形例２を説明する。図１７は、回転部材５２０と支持部材５４０ｂとを示す断面図である。支持部材５４０ｂは、支持部材５４０や支持部材５４０ａの代わりに用いられる。支持部材５４０ｂは、接触部５４８ｂを備える。接触部５４８ｂは、円周の内周面として構成されている。つまり、支持部材５４０や支持部材５４０ａとは異なり、山と谷とによる構造を有しない。 Modification 2 will be described. FIG. 17 is a cross-sectional view showing the rotating member 520 and the support member 540b. The support member 540b is used instead of the support member 540 and the support member 540a. The support member 540b includes a contact portion 548b. The contact portion 548b is configured as a circumferential inner peripheral surface. That is, unlike the support member 540 and the support member 540a, it does not have a structure with peaks and valleys.
　接触部５４８ｂは、突起５２８との摩擦によって、回転部材５２０の回転位置を決める。このため、挿入深さがゼロであると表現することもできる。この特徴によって、無段階で回転位置が調整できると共に、クリック感が生じない。 The contact portion 548 b determines the rotational position of the rotating member 520 by friction with the protrusion 528. For this reason, it can also be expressed that the insertion depth is zero. With this feature, the rotational position can be adjusted steplessly, and a click feeling does not occur.
　変形例３を説明する。図１８は、回転部材５２０ｃ（可動部材）と支持部材５４０ｃとを示す断面図である。回転部材５２０ｃは、実施形態の回転部材５２０の代わりに用いられる。支持部材５４０ｃは、実施形態の支持部材５４０の代わりに用いられる。 Modification 3 will be described. FIG. 18 is a cross-sectional view showing the rotating member 520c (movable member) and the support member 540c. The rotating member 520c is used instead of the rotating member 520 of the embodiment. The support member 540c is used instead of the support member 540 of the embodiment.
　回転部材５２０ｃは、突起５２８ｃを備える。支持部材５４０ｃは、接触部５４８ｃを備える。突起５２８ｃ及び接触部５４８ｃは、実施形態の突起５２８及び接触部５４８と同様な構造を有する。 Rotating member 520c includes a protrusion 528c. The support member 540c includes a contact portion 548c. The protrusion 528c and the contact part 548c have the same structure as the protrusion 528 and the contact part 548 of the embodiment.
　突起５２８ｃは、回転部材５２０ｃの端部に形成されている。これに合わせて、接触部５４８ｃは、支持部材５４０ｃの端部に形成されている。このため、支持部材５４０ｃは、吸引流路部２３０を直接的には支持しない構造になっている。この結果、回転部材５２０の吸引流路部２３０側は、突起５２８ｃが接触部５４８ｃに接触することよって支持される。 The protrusion 528c is formed at the end of the rotating member 520c. In accordance with this, the contact portion 548c is formed at the end of the support member 540c. For this reason, the support member 540c has a structure that does not directly support the suction flow path portion 230. As a result, the suction channel portion 230 side of the rotating member 520 is supported by the protrusion 528c coming into contact with the contact portion 548c.
　このような支持構造であると、ローレット５２６に力を掛けて回転部材５２０を回転させる際に、突起５２８ｃが接触部５４８ｃに押しつけられやすくなる。この結果、回転部材５２０ｃの回転位置の安定性が高まり、且つ、クリック感も安定する。 With such a support structure, when the rotating member 520 is rotated by applying a force to the knurl 526, the protrusion 528c is easily pressed against the contact portion 548c. As a result, the stability of the rotational position of the rotating member 520c is increased and the click feeling is also stabilized.
　変形例４を説明する。図１９は、吸引力調整機構６００を示す斜視図である。吸引力調整機構６００は、実施形態の吸引力調整機構５００の代わりに用いられる。吸引力調整機構６００は、スライダー６２０（可動部材）と、流路部材６４０とを備える。 Modification 4 will be described. FIG. 19 is a perspective view showing the suction force adjusting mechanism 600. The suction force adjustment mechanism 600 is used instead of the suction force adjustment mechanism 500 of the embodiment. The suction force adjustment mechanism 600 includes a slider 620 (movable member) and a flow path member 640.
　図２０は、スライダー６２０と、流路部材６４０とが分解された様子を示す斜視図である。図２１及び図２２は、吸引力調整機構６００を示す断面図である。詳しくは後述するように、図２１及び図２２は、スライダー６２０の位置が互いに異なる。 FIG. 20 is a perspective view showing a state where the slider 620 and the flow path member 640 are disassembled. 21 and 22 are cross-sectional views showing the suction force adjusting mechanism 600. FIG. As will be described in detail later, FIGS. 21 and 22 differ in the position of the slider 620.
　流路部材６４０は、継手６４１と、貫通部６４２と、座繰り部６４３と、流路部材用嵌合孔６４５と、流路６４９とを備える。継手６４１は、実施形態の継手５４１と同様に、吸引チューブ４１との接続のための部位である。流路部材用嵌合孔６４５は、実施形態の第２嵌合孔５２５ｂと同様に、吸引流路部２３０を保持するための孔である。流路６４９は、実施形態の流路５２９と同様に、吸引流路部２３０と吸引チューブ４１とを繋ぐための流路である。 The flow path member 640 includes a joint 641, a penetration part 642, a countersink part 643, a flow path member fitting hole 645, and a flow path 649. The joint 641 is a part for connection with the suction tube 41 as in the joint 541 of the embodiment. The channel member fitting hole 645 is a hole for holding the suction channel portion 230, similarly to the second fitting hole 525b of the embodiment. The channel 649 is a channel for connecting the suction channel unit 230 and the suction tube 41 as in the channel 529 of the embodiment.
　座繰り部６４３は、流路６４９を構成する管壁の一部に、座繰り加工が施されて形成されたような平面である。但し、実際には、座繰り加工によって形成された訳ではなく、流路部材６４０全体が型成形や３Ｄプリンティング等によって形成された結果、座繰り部６４３も形成されている。座繰り部６４３は、流路５２９の管壁を貫通している。この貫通によって、貫通部６４２が形成される。 The countersink portion 643 is a flat surface formed by countersinking a part of the tube wall constituting the flow path 649. However, actually, it is not formed by the countersink processing, but the entire channel member 640 is formed by die molding, 3D printing, or the like, so that the countersink portion 643 is also formed. The counterbore 643 passes through the tube wall of the flow path 529. By this penetration, a penetration part 642 is formed.
　スライダー６２０は、孔６２２と、封止面６２５とを備える。封止面６２５は、円筒の内周面として形成されている。封止面６２５内に流路部材６４０が挿入されると、流路部材６４０に配置されたＯリング６６１とＯリング６６２とによって、流路部材６４０の外周面と封止面６２５との隙間が封止される。 The slider 620 includes a hole 622 and a sealing surface 625. The sealing surface 625 is formed as a cylindrical inner peripheral surface. When the flow path member 640 is inserted into the sealing surface 625, a gap between the outer peripheral surface of the flow path member 640 and the sealing surface 625 is formed by the O-ring 661 and the O-ring 662 disposed in the flow path member 640. Sealed.
　図１９，図２１，図２２に示すように、流路部材６４０は、吸引力調整機構６００として組み付けられる際に、貫通部６４２が孔６２２に通じるようにスライダー６２０内に挿入される。このような関係によって、実施形態と同様に、孔６２２を親指で塞ぐことによって吸引力の調整ができる。 As shown in FIGS. 19, 21, and 22, the flow path member 640 is inserted into the slider 620 so that the penetrating portion 642 communicates with the hole 622 when assembled as the suction force adjusting mechanism 600. With this relationship, the suction force can be adjusted by closing the hole 622 with the thumb, as in the embodiment.
　図２１，図２２に示すように、スライダー６２０は、流路部材６４０の流路方向に沿って移動させることができる。図２１は、流路部材用嵌合孔６４５側に寄せた状態、つまり、吸引流路部２３０側に寄せた状態を示す。図２２は、継手６４１側に寄せた状態、つまり、吸引チューブ４１側に寄せた状態を示す。さらに、スライダー６２０は、流路部材６４０の円周方向に沿って回転移動させることもできる。変形例４によれば、孔６２２の位置を、回転移動だけでなく並進移動させることができる。 21 and 22, the slider 620 can be moved along the flow path direction of the flow path member 640. FIG. 21 shows a state of being brought closer to the flow channel member fitting hole 645 side, that is, a state of being brought closer to the suction flow passage portion 230 side. FIG. 22 shows a state brought close to the joint 641 side, that is, a state brought close to the suction tube 41 side. Further, the slider 620 can be rotated along the circumferential direction of the flow path member 640. According to the modified example 4, the position of the hole 622 can be translated as well as rotationally moved.
　本発明は、本明細書の実施形態や実施例、変形例に限られるものではなく、その趣旨を逸脱しない範囲において種々の構成で実現できる。例えば、発明の概要の欄に記載した各形態中の技術的特徴に対応する実施形態、実施例、変形例中の技術的特徴は、先述の課題の一部又は全部を解決するために、あるいは、先述の効果の一部又は全部を達成するために、適宜、差し替えや、組み合わせを行うことができる。その技術的特徴が本明細書中に必須なものとして説明されていなければ、適宜、削除できる。例えば、以下のものが例示される。 The present invention is not limited to the embodiments, examples, and modifications of the present specification, and can be realized with various configurations without departing from the spirit of the present invention. For example, the technical features in the embodiments, examples, and modifications corresponding to the technical features in the embodiments described in the summary section of the invention are to solve some or all of the above-described problems, or In order to achieve part or all of the effects described above, replacement or combination can be performed as appropriate. If the technical feature is not described as essential in this specification, it can be deleted as appropriate. For example, the following are exemplified.
　ノズルユニットとアクチュエーターユニットとが一体に構成されていてもよい。このように一体となって構成されたものを、ノズルユニットと捉えてもよいし、ハンドピースと捉えてもよい。この構成では、ダイヤフラムは１枚でもよい。
　噴射する液体は、純水でもよいし薬液でもよい。
　液体噴射装置は、医療機器以外に利用されてもよい。
　例えば、液体噴射装置は、噴射した液体によって汚れを除去する洗浄装置に利用されてもよいし、噴射した液体によって線などを描く描画装置に利用されてもよい。 The nozzle unit and the actuator unit may be integrally formed. The unit configured in this way may be regarded as a nozzle unit or a hand piece. In this configuration, the number of diaphragms may be one.
The liquid to be ejected may be pure water or a chemical solution.
The liquid ejecting apparatus may be used other than medical equipment.
For example, the liquid ejecting apparatus may be used in a cleaning apparatus that removes dirt with the ejected liquid, or may be used in a drawing apparatus that draws a line or the like with the ejected liquid.
　実施形態においては、吸引力調整のための孔がユーザーの親指によって塞がれることを想定した構成を採用したが、ユーザーは、実施形態と同一の構成において、他の指を用いて孔を塞いでもよい。或いは、上記の孔がユーザーの他の指によって塞がれることを想定した構成を採用してもよい。この他、孔が塞がれる面積を、他の部材を介して調整してもよい。他の部材とは、例えば、孔の開口部を覆うように設けられたカバー等が考えられる。 In the embodiment, the configuration assuming that the hole for adjusting the suction force is closed by the user's thumb is adopted. However, the user closes the hole using another finger in the same configuration as the embodiment. But you can. Or you may employ | adopt the structure assumed that said hole is obstruct | occluded by another user's finger | toe. In addition, the area where the hole is blocked may be adjusted via another member. Examples of the other member include a cover provided so as to cover the opening of the hole.
　実施形態においてはアクチュエーターとして圧電素子を用いる構成を採用したが、光メーザーを用いて液体を噴射する構成や、ポンプ等により液体を加圧し、液体を噴射する構成を採用してもよい。光メーザーを用いて液体を噴射する構成とは、光メーザーを液体に照射して液体中に気泡を発生させ、この気泡の発生によって引き起こされる液体の圧力上昇を利用する構成である。 In the embodiment, a configuration using a piezoelectric element as an actuator is adopted. However, a configuration in which liquid is ejected using an optical maser, or a configuration in which liquid is pressurized by a pump or the like may be employed. The structure in which the liquid is ejected using the optical maser is a structure in which bubbles are generated in the liquid by irradiating the liquid with the optical maser, and the liquid pressure rise caused by the generation of the bubbles is utilized.
　実施形態においては間欠的に液体を噴射する構成を採用したが、連続的に液体を噴射する機能を備えた構成を採用してもよい。例えば、間欠的な噴射と連続的な噴射とを使い分けることができる構成でもよい。実施形態のハードウエア構成を利用して連続的な噴射を実施するために、アクチュエーターの駆動を停止または低下させた状態でチューブポンプのみを駆動させてもよい。この構成の場合、間欠的な噴射を切除のために実施し、連続的な噴射を洗浄のために実施してもよい。
　或いは、連続的な噴射のみが実施できる構成でもよい。この構成の場合、連続的な噴射によって切除を実施してもよい。 In the embodiment, the configuration in which the liquid is intermittently ejected is employed, but a configuration having a function of ejecting the liquid continuously may be employed. For example, the structure which can selectively use intermittent injection and continuous injection may be sufficient. In order to perform continuous injection using the hardware configuration of the embodiment, only the tube pump may be driven with the driving of the actuator stopped or reduced. In this configuration, intermittent spraying may be performed for excision and continuous spraying may be performed for cleaning.
Or the structure which can implement only continuous injection may be sufficient. In the case of this configuration, the ablation may be performed by continuous injection.
　２０…液体噴射装置、３０…制御部、３１…アクチュエーター用ケーブル、３２…ポンプ用ケーブル、３５…フットスイッチ、４０…吸引装置、４１…吸引チューブ、５０…液体供給装置、５１…給水バッグ、５２…スパイク針、５３ａ…第１コネクター、５３ｂ…第２コネクター、５３ｃ…第３コネクター、５３ｄ…第４コネクター、５３ｅ…第５コネクター、５４ａ…第１給水チューブ、５４ｂ…第２給水チューブ、５４ｃ…第３給水チューブ、５４ｄ…第４給水チューブ、５５…ポンプチューブ、５６…閉塞検出機構、５７…フィルター、６０…チューブポンプ、１００…ハンドピース、２００…ノズルユニット、２０５…噴射管、２０７…ノズル、２１０…ハンドピースケース、２１１…凹部、２３０…吸引流路部、２４０…液体室、２４１…入口流路、２４４…窪み、２５０…ジョイント部、２５３…雌ネジ部、２５５…逃がし部、２６０…液体室側ダイヤフラム、３００…アクチュエーターユニット、３１０…連結部、３１１…第１ケース、３１２…第２ケース、３１３…第３ケース、３１４…保持部材、３１５…金属板、３１６…第１ネジ、３１７…第２ネジ、３１８…第３ネジ、３５０…駆動部、３５１…ハウジング、３５１ａ…雄ネジ部、３５３…固定部材、３６０…圧電素子、３６１…可動板、３６２…ピストン、３６４…圧電素子側ダイヤフラム、４００…吸引管、４１０…凸部、４６０…合成ダイヤフラム、５００…吸引力調整機構、５２０…回転部材、５２０ｃ…回転部材、５２２…孔、５２４…操作面、５２５ａ…第１嵌合孔、５２５ｂ…第２嵌合孔、５２６…ローレット、５２７…張り出し部、５２８…突起、５２８ｃ…突起、５２９…流路、５４０…支持部材、５４０ａ…支持部材、５４０ｂ…支持部材、５４０ｃ…支持部材、５４１…継手、５４５…回転軸、５４６…貫通孔、５４８…接触部、５４８ａ…接触部、５４８ｂ…接触部、５４８ｃ…接触部、５６０…Ｏリング、６００…吸引力調整機構、６２０…スライダー、６２２…孔、６２５…封止面、６４０…流路部材、６４１…継手、６４２…貫通部、６４３…座繰り部部、６４５…流路部材用嵌合孔、６４９…流路、６６１…Ｏリング、６６２…Ｏリング。 DESCRIPTION OF SYMBOLS 20 ... Liquid injection apparatus, 30 ... Control part, 31 ... Actuator cable, 32 ... Pump cable, 35 ... Foot switch, 40 ... Suction apparatus, 41 ... Suction tube, 50 ... Liquid supply apparatus, 51 ... Water supply bag, 52 ... spike needle, 53a ... first connector, 53b ... second connector, 53c ... third connector, 53d ... fourth connector, 53e ... fifth connector, 54a ... first water supply tube, 54b ... second water supply tube, 54c ... 3rd water supply tube, 54d ... 4th water supply tube, 55 ... Pump tube, 56 ... Blockage detection mechanism, 57 ... Filter, 60 ... Tube pump, 100 ... Handpiece, 200 ... Nozzle unit, 205 ... Injection pipe, 207 ... Nozzle , 210 ... hand piece case, 211 ... recess, 230 ... suction channel part, 240 ... liquid , 241 ... Inlet channel, 244 ... Depression, 250 ... Joint portion, 253 ... Female thread portion, 255 ... Escape portion, 260 ... Liquid chamber side diaphragm, 300 ... Actuator unit, 310 ... Connecting portion, 311 ... First case, 312 ... 2nd case, 313 ... 3rd case, 314 ... Holding member, 315 ... Metal plate, 316 ... 1st screw, 317 ... 2nd screw, 318 ... 3rd screw, 350 ... Drive part, 351 ... Housing, 351a ... male screw part, 353 ... fixed member, 360 ... piezoelectric element, 361 ... movable plate, 362 ... piston, 364 ... piezoelectric element side diaphragm, 400 ... suction pipe, 410 ... convex part, 460 ... synthetic diaphragm, 500 ... suction force Adjustment mechanism, 520 ... rotating member, 520c ... rotating member, 522 ... hole, 524 ... operation surface, 525a ... first fitting hole, 525b ... second fitting 526 ... Knurling, 527 ... Overhang, 528 ... Protrusion, 528c ... Protrusion, 529 ... Flow path, 540 ... Support member, 540a ... Support member, 540b ... Support member, 540c ... Support member, 541 ... Joint, 545 ... Rotation Shaft, 546 ... through hole, 548 ... contact portion, 548a ... contact portion, 548b ... contact portion, 548c ... contact portion, 560 ... O-ring, 600 ... suction force adjusting mechanism, 620 ... slider, 622 ... hole, 625 ... sealed Stop surface, 640 ... channel member, 641 ... joint, 642 ... penetration part, 643 ... counterbore part, 645 ... fitting hole for channel member, 649 ... channel, 661 ... O ring, 662 ... O ring.

Claims (11)

  1. 　液体を吸引するための吸引流路を備える吸引流路部と、
    　前記吸引流路に通じる孔を備える可動部材と、
    　前記吸引流路部および前記可動部材を保持するケースと、を備え、
    　前記可動部材は、前記ケースに対して移動できるように構成されている
    　液体噴射装置用ノズルユニット。     A suction flow path section comprising a suction flow path for sucking liquid;
    A movable member having a hole communicating with the suction channel;
    A case for holding the suction flow path section and the movable member,
    The said movable member is comprised so that it can move with respect to the said case. Nozzle unit for liquid ejecting apparatuses.
  2. 　前記可動部材の移動は、回転移動を含む
    　請求項１に記載の液体噴射装置用ノズルユニット。     The nozzle unit for a liquid ejecting apparatus according to claim 1, wherein the movement of the movable member includes a rotational movement.
  3. 　前記回転移動の中心は、前記ケースの長手方向に平行である
    　請求項２に記載の液体噴射装置用ノズルユニット。     The nozzle unit for a liquid ejecting apparatus according to claim 2, wherein a center of the rotational movement is parallel to a longitudinal direction of the case.
  4. 　前記吸引流路部は、外周面が前記回転移動の中心軸として機能する
    　請求項２又は請求項３に記載の液体噴射装置用ノズルユニット。     The nozzle unit for a liquid ejecting apparatus according to claim 2, wherein an outer peripheral surface of the suction channel portion functions as a central axis of the rotational movement.
  5. 　前記可動部材の回転方向の位置を安定させる位置決め機構を備える
    　請求項２から請求項４までの何れか一項に記載の液体噴射装置用ノズルユニット。     The nozzle unit for a liquid ejecting apparatus according to any one of claims 2 to 4, further comprising a positioning mechanism that stabilizes a position of the movable member in a rotation direction.
  6. 　前記ケースに固定された支持部材を備え、
    　前記可動部材は、前記支持部材に回転可能に支持され、
    　前記可動部材は、前記回転移動の中心との直交方向に突き出した突起と、前記吸引流路部に通じる流路とを備え、
    　前記支持部材は、前記突起に接触する接触部を備え、
    　前記位置決め機構は、前記突起と前記接触部との接触によって実現される
    　請求項５に記載の液体噴射装置用ノズルユニット。     A support member fixed to the case;
    The movable member is rotatably supported by the support member,
    The movable member includes a protrusion protruding in a direction orthogonal to the center of the rotational movement, and a flow path leading to the suction flow path section.
    The support member includes a contact portion that contacts the protrusion,
    The nozzle unit for a liquid ejecting apparatus according to claim 5, wherein the positioning mechanism is realized by contact between the protrusion and the contact portion.
  7. 　前記可動部材の外周面の一部であって、前記孔を塞ぐ指が接触する部位に、凹曲面が設けられている
    　請求項６に記載の液体噴射装置用ノズルユニット。     The nozzle unit for a liquid ejecting apparatus according to claim 6, wherein a concave curved surface is provided in a part of the outer peripheral surface of the movable member, which is in contact with a finger that closes the hole.
  8. 　前記突起は、前記回転移動の中心に対し、前記凹曲面の反対側に配置されている
    　請求項７に記載の液体噴射装置用ノズルユニット。     The nozzle unit for a liquid ejecting apparatus according to claim 7, wherein the protrusion is disposed on the opposite side of the concave curved surface with respect to the center of the rotational movement.
  9. 　前記可動部材の外周面にローレットが設けられている
    　請求項６から請求項８までの何れか一項に記載の液体噴射装置用ノズルユニット。     The nozzle unit for a liquid ejecting apparatus according to any one of claims 6 to 8, wherein a knurling is provided on an outer peripheral surface of the movable member.
  10. 　前記可動部材の幅は、１５ｍｍ以上２５ｍｍ以下である
    　請求項６から請求項９までの何れか一項に記載の液体噴射装置用ノズルユニット。     The nozzle unit for a liquid ejecting apparatus according to any one of claims 6 to 9, wherein a width of the movable member is 15 mm or more and 25 mm or less.
  11. 　前記液体を吸引するための吸引力は、前記支持部材に接続された吸引チューブを介して、前記吸引流路に作用する
    　請求項６から請求項１０までの何れか一項に記載の液体噴射装置用ノズルユニット。     The liquid ejecting apparatus according to any one of claims 6 to 10, wherein a suction force for sucking the liquid acts on the suction flow path via a suction tube connected to the support member. Nozzle unit.
PCT/JP2016/000651 2015-03-18 2016-02-09 Nozzle unit for liquid jetting device WO2016147540A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2015054196A JP2016171948A (en) 2015-03-18 2015-03-18 Nozzle unit for liquid injection device
JP2015-054196 2015-03-18

Publications (1)

Publication Number Publication Date
WO2016147540A1 true WO2016147540A1 (en) 2016-09-22

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5674226A (en) * 1992-05-07 1997-10-07 Sentinel Medical, Inc. Method and apparatus for tissue excision and removal by fluid jet
JP2013509915A (en) * 2009-11-05 2013-03-21 インナーライト インコーポレイテッド Air water vacuum syringe and method of use
JP2014188243A (en) * 2013-03-28 2014-10-06 Seiko Epson Corp Fluid jetting device, and medical equipment

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5674226A (en) * 1992-05-07 1997-10-07 Sentinel Medical, Inc. Method and apparatus for tissue excision and removal by fluid jet
JP2013509915A (en) * 2009-11-05 2013-03-21 インナーライト インコーポレイテッド Air water vacuum syringe and method of use
JP2014188243A (en) * 2013-03-28 2014-10-06 Seiko Epson Corp Fluid jetting device, and medical equipment

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