CN104068922A - Protective puncture needle - Google Patents
Protective puncture needle Download PDFInfo
- Publication number
- CN104068922A CN104068922A CN201410295748.9A CN201410295748A CN104068922A CN 104068922 A CN104068922 A CN 104068922A CN 201410295748 A CN201410295748 A CN 201410295748A CN 104068922 A CN104068922 A CN 104068922A
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- CN
- China
- Prior art keywords
- spring
- protection
- fixture block
- block
- protective
- Prior art date
- Legal status (The legal status 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 status listed.)
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Classifications
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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
- A61B17/34—Trocars; Puncturing needles
- A61B17/3494—Trocars; Puncturing needles with safety means for protection against accidental cutting or pricking, e.g. limiting insertion depth, pressure sensors
Abstract
The invention relates to a protective puncture needle which is mainly applied to laparoscopic surgery of human bodies. The protective puncture needle is characterized in that a protective sliding bar, a snapping block , a protective sliding block, a spring III, a spring IV and a spring V are further arranged in a protective cutter bar, the protective sliding bar is connected with a blade window and a needle sleeve main body respectively, and the snapping block and the protective sliding bar are located inside the needle sleeve main body; the protective sliding bar and the snapping block are matched with the protective sliding block, the spring III, the spring IV and the spring V are all arranged on the protective sliding block, the spring III and the spring IV controls left-right movement of the protective sliding block, and the spring V controls the front-back movement of the protective sliding block; the protective puncture needle is further provided with a spring I and a spring II, the spring I controls vertical movement of a cutter bar assembly, and the spring II controls vertical movement of the snapping block. When the protective puncture needle punctures an abdominal wall, the protective sliding bar is limited vertically by the protective sliding block, even if the front end is under external force, the puncture blade cannot come out again, and the blade is in a protected state. Therefore, the protective puncture guarantees that a patient does not suffer from accidental injury caused by puncture, thereby being safe in usage, reliable and convenient.
Description
Technical field
The present invention relates to a kind of protection puncture needle, it belongs to medical apparatus and instruments, is mainly applicable in the laparoscopic surgery of human body.
Background technology
In prior art, human abdominal cavity operation has been widely used puncture needle, and especially using in Minimally Invasive Surgery field is in laparoscopic surgery.Common puncture needle comprises knife bar assembly, knife bar mechanism and bonnet; bonnet is connected with knife bar mechanism with knife bar assembly respectively; knife bar mechanism comprises cutter window and needle guard main body; because the syndeton design between each assembly is reasonable not; and knife bar mechanism does not have protector and stopping means, the safety that operation is used can not guarantee.
Certainly, also have the puncture needle that protection knife bar mechanism is installed, but their black boxs normally, each part must be installed successively, and connecting portion mostly is gummed, during installation fee, inconvenience; Meanwhile, puncture needle must be pressed and open and close button and could work before puncture.
Chinese utility model patent application number 022492445 discloses a kind of " canula puncture needle "; this puncture needle comprises housing 1, nook closing member 3, sleeve pipe 4, knife bar 6, puncture blade 7, safe sleeve pipe 11, back-moving spring 12 and insurance thimble 24; but its structural design is still reasonable not, in operation process, can not really play our said protective effect.Specifically, referring to Fig. 5, when insurance thimble 24, depress, whole device is in the state of de-preservation, after wearing out stomach wall, because the cone-shaped nose of safe sleeve pipe 11 is no longer subject to resistance, under the effect of back-moving spring 12, safe sleeve pipe 11 ejects forward, again puncture blade is encased again; In this process, insurance thimble 24 is depressed always, although puncture blade 7 encases again; but when the cone-shaped nose of safe sleeve pipe 11 touches internal organs, front end is under pressure and to after-contraction, exposes again puncture blade 7; lost protective effect, operation is used or is dangerous.
In addition, also have some puncture needles, although puncture blade has protective effect, its complex structural designs, cost is high, even uses inconvenient.
Summary of the invention
Technical problem to be solved by this invention is to overcome existing above-mentioned deficiency in prior art, and provide, a kind of reasonable in design is simple, the protection puncture needle with safeguard protection effect is used in operation.
The present invention addresses the above problem adopted technical scheme: this protection puncture needle comprises knife bar assembly, protection knife bar mechanism and bonnet, bonnet is connected with protection knife bar mechanism with knife bar assembly respectively, protection knife bar mechanism comprises cutter window and needle guard main body, it is characterized in that: in described protection knife bar mechanism, be also provided with protection slide bar, fixture block, protection slide block, spring three, spring four and spring five, the front portion of protection slide bar and the clamping of cutter window, rear portion and the socket of needle guard main body, fixture block and protection slide block are positioned at the two ends of needle guard main body and fixture block and stretch out needle guard main body; Described protection slide bar and fixture block and protection slide block match, and described spring three, spring four and spring five are all arranged on protection slide block, and spring three and spring four are controlled the side-to-side movement of protection slide block, and spring five is controlled seesawing of protection slide block; Also be provided with spring one and spring two, described spring one is between protection slide bar and bonnet, and spring two is between fixture block and bonnet, and spring one is controlled moving up and down of knife bar assembly, and spring two is controlled moving up and down of fixture block.Make thus not only reasonable in design, simple of the present invention, and can accomplish when operation is used: when 1. original state is with preparation puncture, cutter head is in cutter window; While 2. puncturing, blade exposes work; 3. after the broken stomach wall of puncture, the protected slide block of protection slide bar is spacing up and down, when front end is subject to external force again, also can again not expose puncture blade, and blade is in guard mode; When 4. puncture finishes, whole mechanism returns to original state again.The present invention has really played protective effect, safe and reliable.
Protection slide bar of the present invention comprises the body of rod, circumference positive stop lug boss, upper and lower positive stop lug boss, front and back slip boss and spring eye, on the top of the body of rod, be fixed with respectively circumference positive stop lug boss, upper and lower positive stop lug boss and front and back slip boss, spring eye is opened the top at the body of rod; Described front and back slip boss is adjacent with upper and lower positive stop lug boss, and the outer surface of front and back slip boss is vertical with the horizontal center line of spring eye.Make to protect slide bar to match with fixture block and protection slide block better, complete safely and reliably whole puncture operation.
On protection slide block of the present invention, be fixed with respectively spring base three, spring base four and spring base five; and have sliding tray one, sliding tray two and stopper slot on protection slide block; difference mounting spring three, spring four and spring five on described spring base three, spring base four and spring base five; sliding tray one makes to protect slide block to horizontally slip; sliding tray two slides before and after making to protect slide block, and stopper slot carries out spacing to moving up and down of protection slide bar.Make to protect slide block to match with fixture block and protection slide bar better, complete safely and reliably whole puncture operation.
The body of rod of the present invention bottom has hole clipping, this hole clipping and the clamping of cutter window; Make the body of rod more convenient with being connected of cutter window.
The circular-rotation of circumference positive stop lug boss limiting protecting slide bar of the present invention, the moving up and down of upper and lower positive stop lug boss limiting protecting slide bar, front and back slip boss slides before and after making to protect slide block, and in spring eye, mounting spring one.
Fixture block of the present invention comprises the fixture block body, spring lead, the fixture block that are fixed together horizontally slip boss and fixture block lead; described spring lead and fixture block lead are positioned at the two ends of fixture block body; horizontally slip boss and fixture block body of fixture block fixed, and the fixture block boss that horizontally slips makes to protect slide block to horizontally slip.Fixture block can be matched with protection slide block and protection slide bar better, complete safely and reliably whole puncture operation.
Spring lead of the present invention is cylindrical, places spring two on it, and fixture block lead is tetragon, and fixture block body is one at circumferencial direction, to have a place to become the cylindrical of plane, and the described fixture block boss that horizontally slips is fixed in the plane of this fixture block body; Make the structural design of fixture block more reasonable.
Knife bar assembly of the present invention is independently installed with protection knife bar mechanism, last and bonnet, spring one and spring two assemblings, and connecting portion is clamping.Make easier for installation simply, production efficiency is higher.
The present invention compared with prior art; have the following advantages and effect: structural design is more reasonable; owing to being provided with protection slide bar, fixture block, protection slide block, spring one, spring two, spring three, spring four and spring five; in puncture needle use procedure; after the broken stomach wall of puncture; the protected slide block of protection slide bar is spacing up and down; when front end is subject to external force again; can again not expose puncture blade yet; blade is in guard mode; guarantee that patient can not be subject to because of puncture unexpected injury, use safety, reliable and convenient.
Accompanying drawing explanation
Fig. 1 is overall structure front view of the present invention (analysing and observe).
Fig. 2 is the structural representation top view of Fig. 1.
Fig. 3 is the structural representation cutaway view of A-A in Fig. 2.
Fig. 4 is the structural representation front view (analysing and observe) of knife bar assembly in the present invention.
Fig. 5 is the structural representation side view of Fig. 4.
Fig. 6 is the structural representation front view (analysing and observe) of protecting knife bar mechanism in the present invention.
Fig. 7 is the structural representation cutaway view of the C-C of Fig. 6.
Fig. 8 is the structural representation top view of Fig. 6.
Fig. 9 is the D-D structural representation cutaway view of Fig. 8.
Figure 10 is the B-B structural representation cutaway view of Fig. 8.
Figure 11 is the structural representation front view of protecting slide bar in the present invention.
Figure 12 is the structural representation top view of Figure 11.
Figure 13 is the structural representation right view of Figure 11.
Figure 14 is the structural representation axonometric chart that the present invention protects slide bar.
Figure 15 is the first perspective view of protecting slide block in the present invention.
Figure 16 is the second perspective view of protecting slide block in the present invention.
Figure 17 is the 3rd perspective view of protecting slide block in the present invention.
Figure 18 is the structural representation front view of the direction of arrow in Figure 15.
Figure 19 is the structural representation upward view of the direction of arrow in Figure 15.
Figure 20 is the structural representation top view of the direction of arrow in Figure 15.
Figure 21 is the structural representation front view of fixture block in the present invention.
Figure 22 is the structural representation top view of Figure 21.
Figure 23 is the structural representation axonometric chart of fixture block in the present invention.
Figure 24 is one of them position view of protecting slide bar, protection slide block and fixture block to match in the present invention.
The specific embodiment
Referring to Fig. 1-Fig. 5; the present invention is mainly comprised of knife bar assembly 1, protection knife bar mechanism 2, bonnet 3, spring 1 and spring 25; bonnet 3 is connected with protection knife bar mechanism 2 buckles with knife bar assembly 1 respectively; spring 1 and spring 25 are between protection knife bar mechanism 2 and bonnet 3; knife bar assembly 1 is installed with protection knife bar mechanism 2 is independent; last and bonnet 3, spring 1 and spring 25 are assembled, and connecting portion is clamping.
Knife bar assembly 1 of the present invention comprises blade 11, blade gland 12 and knife bar 13, blade 11 and 12 crimping of blade gland, blade 11 and knife bar 13 clampings, the other end of knife bar 13 and bonnet 3 clampings; During installation, blade 11 snaps on knife bar 13, then covers blade gland 12.
Referring to Fig. 1, Fig. 6-Figure 24, protection knife bar mechanism 2 of the present invention comprises cutter window 21, protection slide bar 22, needle guard main body 23, fixture block 24, protection slide block 25, spring 36, spring 47 and spring 58; The front portion of protection slide bar 22 and 21 clampings of cutter window, rear portion and 23 sockets of needle guard main body, fixture block 24 and protection slide block 25 are positioned at the two ends of needle guard main body 23 and fixture block 24 and stretch out needle guard main body 23; Protection slide bar 22 and fixture block 24 match with protection slide block 25, and spring 36, spring 47 and spring 58 are all arranged on protection slide block 25, and spring 36 and spring 47 are controlled the side-to-side movement of protection slide block 25, and spring 58 is controlled seesawing of protection slide block 25.
Particularly, spring 1 is between protection slide bar 22 and bonnet 3, and spring 25 is between fixture block 24 and bonnet 3, and spring 1 is controlled moving up and down of knife bar assembly 1, and spring 25 is controlled moving up and down of fixture block 24.
Protection slide bar 22 of the present invention comprises the body of rod 221, circumference positive stop lug boss 224, upper and lower positive stop lug boss 223, front and back slip boss 222 and spring eye 225, on the top of the body of rod 221, be fixed with respectively circumference positive stop lug boss 224, upper and lower positive stop lug boss 223 and front and back slip boss 222, spring eye 225 is opened the top at the body of rod 221; Before and after slip boss 222 adjacent with upper and lower positive stop lug boss 223, and the outer surface 2221 of front and back slip boss 222 and the horizontal center line 2251 of spring eye 225 vertical; The body of rod 221 bottoms have hole clipping 226, this hole clipping 226 and 21 clampings of cutter window; Wherein: the circular-rotation of circumference positive stop lug boss 224 limiting protecting slide bars 22, the moving up and down of upper and lower positive stop lug boss 223 limiting protecting slide bars 22, front and back slip boss 222 makes to protect slide block 25 front and back to be slided, and in spring eye 225, mounting spring 1.
On protection slide block 25 of the present invention, be fixed with respectively spring base 3 252, spring base 4 253 and spring base 5 251, and have sliding tray 1, sliding tray 2 256 and stopper slot 255 on protection slide block 25, difference mounting spring 36, spring 47 and spring 58 on spring base 3 252 wherein, spring base 4 253 and spring base 5 251, sliding tray 1 makes to protect slide block 25 to horizontally slip, sliding tray 2 256 makes to protect slide block 25 front and back to be slided, and it is spacing that the moving up and down of 255 pairs of protection slide bars 22 of stopper slot carried out; The centrage 2521 of spring base 3 252 is parallel with the centrage 2531 of spring base 4 253, and the centrage 2511 of spring base 5 251 is vertical with the centrage 2531 of the centrage 2521 of spring base 3 252 and spring base 4 253.
Fixture block 24 of the present invention comprises the fixture block body 241, spring lead 242, the fixture block that are fixed together horizontally slip boss 244 and fixture block lead 243, spring lead 242 and fixture block lead 243 are positioned at the two ends of fixture block body 241, horizontally slip boss 244 of fixture block is fixing with fixture block body 241, and the fixture block boss 244 that horizontally slips makes to protect slide block 25 to horizontally slip; In the present embodiment, spring lead 242 is cylindrical, and fixture block lead 243 is tetragon, and fixture block body 241 is one at circumferencial direction, to have a place to become the cylindrical of plane 2411, and the fixture block boss 244 that horizontally slips is fixed in the plane 2411 of this fixture block body 241; On spring lead 242, place spring 25, fixture block lead 243 makes fixture block 24 move up and down along fixture block lead 243.
Whole protection knife bar mechanism 2 is made of plastic.
Referring to Fig. 1-Figure 24, operation principle of the present invention and service condition thereof are as follows:
(see figure 7) during original state, the protected slide block 25 of protection slide bar 22 is spacing, can not move upward, and blade 11 is 21 li of cutter windows.
(see figure 9) while preparing puncture, fixture block 24 pressurizeds move upward, fixture block 24 is that sliding tray 1 interacts with the inclined-plane of protection slide block 25, protection slide block 25 is subject to the restriction of bonnet 3, can not move in vertical direction, can only level to left movement; Protection slide bar 22 departs from the spacing of protection slide block 25, can move upward.Now, spring 25, spring 36, spring 47 are in impaction state.
(see figure 10) during puncture, protection slide bar 22 moves upward, and top is to protection slide block 25 places, and protection slide block 25 travels forward, and blade 11 exposes work, and now spring 1, spring 58 are in impaction state.
After the broken stomach wall of puncture, protection slide bar 22, under the elastic force effect of spring 1, moves downward; Protection slide block 25 moves right under the elastic force effect of spring 36, spring 47; Protection slide block 25 is under the effect of spring 58, and motion backward, until spacing end face 258 is encountered fixture block 24 and stopped.Now, protection slide block 25 blocks protection slide bar 22 again, makes to protect slide bar 22 not move upward, and blade 11 is in guard mode.
When puncture finishes, fixture block 24, under the effect of spring 25, moves downward; Protection slide block 25, under the effect of spring 58, moves backward.Now, whole mechanism returns to original state.
Part movement direction as herein described is as the criterion with Figure of description.
Above-mentioned work process makes the present invention have real protective effect.
Specific embodiment described in this description, the title that its part is got can be different.All equivalence or simple change of doing according to described structure, feature and the principle of patent design of the present invention, are included in the protection domain of patent of the present invention.
Claims (9)
1. a protection puncture needle, comprises knife bar assembly, protection knife bar mechanism and bonnet, and bonnet is connected with protection knife bar mechanism with knife bar assembly respectively, and protection knife bar mechanism comprises cutter window and needle guard main body, it is characterized in that:
In described protection knife bar mechanism, be also provided with protection slide bar, fixture block, protection slide block, spring three, spring four and spring five, the front portion of protection slide bar and the clamping of cutter window, rear portion and the socket of needle guard main body, fixture block and protection slide block are positioned at the two ends of needle guard main body and fixture block and stretch out needle guard main body; Described protection slide bar and fixture block and protection slide block match, and described spring three, spring four and spring five are all arranged on protection slide block, and spring three and spring four are controlled the side-to-side movement of protection slide block, and spring five is controlled seesawing of protection slide block;
Also be provided with spring one and spring two, described spring one is between protection slide bar and bonnet, and spring two is between fixture block and bonnet, and spring one is controlled moving up and down of knife bar assembly, and spring two is controlled moving up and down of fixture block.
2. protection puncture needle according to claim 1, it is characterized in that: described protection slide bar comprises the body of rod, circumference positive stop lug boss, upper and lower positive stop lug boss, front and back slip boss and spring eye, on the top of the body of rod, be fixed with respectively circumference positive stop lug boss, upper and lower positive stop lug boss and front and back slip boss, spring eye is opened the top at the body of rod; Described front and back slip boss is adjacent with upper and lower positive stop lug boss, and the outer surface of front and back slip boss is vertical with the horizontal center line of spring eye.
3. protection puncture needle according to claim 1; it is characterized in that: on described protection slide block, be fixed with respectively spring base three, spring base four and spring base five; and have sliding tray one, sliding tray two and stopper slot on protection slide block; difference mounting spring three, spring four and spring five on described spring base three, spring base four and spring base five; sliding tray one makes to protect slide block to horizontally slip; sliding tray two slides before and after making to protect slide block, and stopper slot carries out spacing to moving up and down of protection slide bar.
4. protection puncture needle according to claim 2, is characterized in that: described body of rod bottom has hole clipping, this hole clipping and the clamping of cutter window.
5. protection puncture needle according to claim 2; it is characterized in that: the circular-rotation of described circumference positive stop lug boss limiting protecting slide bar; moving up and down of upper and lower positive stop lug boss limiting protecting slide bar, front and back slip boss slides before and after making to protect slide block, and in spring eye, mounting spring one.
6. protection puncture needle according to claim 3, is characterized in that: described spring base three is parallel with the centrage of spring base four, and the centrage of spring base five is vertical with the centrage of spring base four with spring base three.
7. protection puncture needle according to claim 1; it is characterized in that: described fixture block comprises the fixture block body, spring lead, the fixture block that are fixed together horizontally slip boss and fixture block lead; described spring lead and fixture block lead are positioned at the two ends of fixture block body; horizontally slip boss and fixture block body of fixture block fixed; this fixture block boss that horizontally slips makes to protect slide block to horizontally slip, and fixture block lead makes fixture block move up and down along fixture block lead.
8. protection puncture needle according to claim 7; it is characterized in that: described spring lead is cylindrical; on it, place spring two; fixture block lead is tetragon; fixture block body is one at circumferencial direction, to have a place to become the cylindrical of plane, and the described fixture block boss that horizontally slips is fixed in the plane of this fixture block body.
9. protection puncture needle according to claim 1, is characterized in that: described knife bar assembly is independently installed with protection knife bar mechanism, last and bonnet, spring one and spring two assemblings, and connecting portion is clamping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410295748.9A CN104068922B (en) | 2014-06-27 | 2014-06-27 | Protection puncture needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410295748.9A CN104068922B (en) | 2014-06-27 | 2014-06-27 | Protection puncture needle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104068922A true CN104068922A (en) | 2014-10-01 |
| CN104068922B CN104068922B (en) | 2016-07-06 |
Family
ID=51590811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410295748.9A Active CN104068922B (en) | 2014-06-27 | 2014-06-27 | Protection puncture needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104068922B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106510810A (en) * | 2016-12-09 | 2017-03-22 | 成都五义医疗科技有限公司 | Button driving type automatic rotation protection puncture needle |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5171245A (en) * | 1990-09-27 | 1992-12-15 | Stryker Corporation | Surgical apparatus including a spring activated locking device |
| US5318580A (en) * | 1990-09-11 | 1994-06-07 | Origin Medsystems, Inc. | Retractable trocar |
| WO2000051506A1 (en) * | 1999-03-01 | 2000-09-08 | Karl Storz Gmbh & Co. Kg | Instrument for cutting biological and notably human tissue |
| WO2003088853A2 (en) * | 2002-04-22 | 2003-10-30 | Emmebi S.R.L. | Trocar with mechanism for covering and uncovering the scalpel |
| CN2587362Y (en) * | 2002-09-23 | 2003-11-26 | 佛山特种医用导管有限责任公司 | Trocar puncture needle |
| WO2008076337A1 (en) * | 2006-12-15 | 2008-06-26 | Tyco Healthcare Group Lp | Trocar assembly with obturator and retractable stylet |
| CN204072252U (en) * | 2014-06-27 | 2015-01-07 | 浙江天松医疗器械股份有限公司 | A kind of protection puncture needle |
-
2014
- 2014-06-27 CN CN201410295748.9A patent/CN104068922B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5318580A (en) * | 1990-09-11 | 1994-06-07 | Origin Medsystems, Inc. | Retractable trocar |
| US5171245A (en) * | 1990-09-27 | 1992-12-15 | Stryker Corporation | Surgical apparatus including a spring activated locking device |
| WO2000051506A1 (en) * | 1999-03-01 | 2000-09-08 | Karl Storz Gmbh & Co. Kg | Instrument for cutting biological and notably human tissue |
| WO2003088853A2 (en) * | 2002-04-22 | 2003-10-30 | Emmebi S.R.L. | Trocar with mechanism for covering and uncovering the scalpel |
| CN2587362Y (en) * | 2002-09-23 | 2003-11-26 | 佛山特种医用导管有限责任公司 | Trocar puncture needle |
| WO2008076337A1 (en) * | 2006-12-15 | 2008-06-26 | Tyco Healthcare Group Lp | Trocar assembly with obturator and retractable stylet |
| CN204072252U (en) * | 2014-06-27 | 2015-01-07 | 浙江天松医疗器械股份有限公司 | A kind of protection puncture needle |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106510810A (en) * | 2016-12-09 | 2017-03-22 | 成都五义医疗科技有限公司 | Button driving type automatic rotation protection puncture needle |
| WO2018103572A1 (en) * | 2016-12-09 | 2018-06-14 | 成都五义医疗科技有限公司 | Button-driven type automatically rotatable and protective puncture needle, and trocar |
| CN106510810B (en) * | 2016-12-09 | 2023-05-26 | 成都五义医疗科技有限公司 | Button-driven automatic rotation protection puncture needle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104068922B (en) | 2016-07-06 |
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