CN203060553U - Bending controllable guiding catheter - Google Patents
Bending controllable guiding catheter Download PDFInfo
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- CN203060553U CN203060553U CN 201320045339 CN201320045339U CN203060553U CN 203060553 U CN203060553 U CN 203060553U CN 201320045339 CN201320045339 CN 201320045339 CN 201320045339 U CN201320045339 U CN 201320045339U CN 203060553 U CN203060553 U CN 203060553U
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- bending
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Abstract
The utility model discloses a bending controllable guiding catheter and aims to shorten operation time and improve operation safety. The bending controllable guiding catheter disclosed by the utility model is provided with a catheter; the near end of the catheter is connected with a handle; the far end of the catheter is a catheter bent section with the length of 20 mm to 100 mm; the catheter bent section is connected with the far end of a metal stay wire; the near end of the metal stay wire is connected with the handle; and the handle controls the catheter bent section to bend by the metal stay wire. Compared with the prior art, the bending controllable guiding catheter has the advantages that regulation of relative positions of an outer handle and a pull-push rod is equivalent to loosening or tightening of the metal stay wire; the far end of the catheter bent section is bent and deformed to control relative displacement of the outer handle and the push rod so as to realize bending controllability of the far end of the catheter and achieve the effect that the same catheter can enter left and right coronary arteries; operation time is shortened; safety of the percutaneous coronary intervention operation is improved; and the bending controllable guiding catheter is also suitable for hearts with different sizes and coronary arteries with different openings, has a compact structure and is low in cost.
Description
Technical field
This utility model relates to a kind of medical apparatus and instruments and preparation method thereof, particularly guiding catheter of a kind of interventional therapy and preparation method thereof.
Background information
Guiding catheter is the percutaneous coronary intervention (pci) requisite subsidiary conduit of performing the operation, by guiding catheter being sent into the coronary artery entrance, for seal wire, sacculus or support provide admission passage.Because the shape of patient's heart size and coronary ostium is incomplete same, in order to adapt to patient's different arteria coronaria tremulous pulsies, the far-end of guiding catheter is made multiple bending.The guiding catheter of prior art is fixing bending, its curved complexity, type is various, for selecting guiding catheter, the doctor brought inconvenience like this, the doctor needs to change the guiding catheter of multiple different bendings in operation process simultaneously, so not only prolong the time of operation, strengthened patient's misery, also increased the risk of operation.
Summary of the invention
The purpose of this utility model provides a kind of controlled curved guiding catheter, and the technical problem that solve is to shorten operating time, improves operation safety.
This utility model is by the following technical solutions: a kind of controlled curved guiding catheter, be provided with conduit, the near-end of conduit is connected with handle, the far-end of described conduit is the guiding-tube bend section of length 20mm～100mm, the guiding-tube bend section connects the far-end of metal backguy, the near-end of metal backguy is connected on the handle, and handle is through the bending of metal backguy control guiding-tube bend section.
The distal end of guiding-tube bend section of the present utility model is equipped with the development indicating, and the near-end of development indicating is equipped with the becket anchor point, and the distance between becket anchor point and the development indicating is 4mm～30mm, and described metal backguy far-end and becket anchor point are welded to connect.
Guiding-tube bend section of the present utility model is linearity in free state, and the angle that is bent is: 0＜angle≤270 °; Or described guiding-tube bend section is bending in free state, and crooked angle is: 0＜angle≤90 °, the angle that is bent is: 0＜angle≤270 °, the direction that is bent is opposite in the direction of free state bending with the guiding-tube bend section.
The part of guiding-tube bend section of the present utility model between development indicating and becket anchor point is bending in free state; Or the junction of described guiding-tube bend section and the non-bending section of conduit, be bending in free state.
Conduit of the present utility model is connected and composed by guiding-tube bend section and the non-bending section of conduit of far-end.
Guiding-tube bend section of the present utility model and the non-bending section of conduit are provided with conduit internal layer, conduit intermediate layer and catheter outer, and catheter outer is nested with outside the conduit internal layer, and the conduit intermediate layer is embedded in the catheter outer; Described conduit internal layer adopts politef, the conduit intermediate layer is woven wire cloth, it is macromolecule polymer material block polyamide, nylon or the polyurethane of 25D～72D that catheter outer adopts hardness, the guiding-tube bend section adopts soft relatively macromolecule polymer material, and the non-bending section of conduit adopts the higher relatively macromolecule polymer material of hardness; Described becket anchor point is embedded in the catheter outer.
Near-end one side of becket anchor point of the present utility model, along the axial direction of conduit, being formed with the cross section in catheter outer is poroid backguy chamber; At the non-bending section of conduit, the backguy intracavity is provided with the axial support molectron, the metal backguy is arranged in the axial support molectron hole of the backguy chamber of guiding-tube bend section and the non-bending section of conduit: described axial support molectron is provided with internal layer, intermediate layer and skin, described internal layer adopts politef, the intermediate layer is the net of metal wire knitted or the coil spring shape of coiling, and skin is high molecular polymer polyimides, polyether-ether-ketone, nylon, block polyamide or polyurethane.
Handle of the present utility model is provided with push rod and the outdoor handle of tubular, and the near-end of push rod puts in a section of outdoor handle through hole far-end vertically, is formed with damping and is slidingly connected; Be provided with anchorage shoe in one section of described outdoor handle through hole near-end, the near-end of described metal backguy is connected on the anchorage shoe.
Have stopper slot on the excircle of push rod of the present utility model, the length direction of stopper slot is parallel to the axis direction of push rod; Radially have pin-and-hole on the described outdoor handle, insert limited position pin in the pin-and-hole, spacer pin inwardly stretches out in one section insertion stopper slot of pin-and-hole.
Anchorage shoe of the present utility model is shaped as column, is provided with and the catheter channel of outdoor handle axis coaxle and the backguy passage parallel with the outdoor handle axis at its axis of anchorage shoe upper edge; The lateral wall of the backguy passage of handle wall and anchorage shoe has the screw that screws in hold-down screw outside; Near the end of hold-down screw, have the through hole with the hold-down screw axis normal, when hold-down screw screws in the screw of outdoor handle and anchorage shoe, through hole and backguy channel connection.
This utility model compared with prior art, regulate the relative position of outdoor handle and pulling-pushing rod, the metal backguy screw lock that is fixed, be equivalent to loosen or strain the metal backguy, the far-end of guiding-tube bend section occurs bending and deformation, the relative displacement of control outdoor handle and push rod, can control the degree of crook of guiding-tube bend section far-end, realize that the distal end of catheter bending is controlled, reach and use same conduit can enter a left side, right coronary artery, shorten operating time, alleviate the patient suffering, improve the safety of percutaneous coronary intervention operation, also be fit to the heart of different sizes and the coronary artery of different openings, compact conformation, cost is low.
Description of drawings
The structural representation of Fig. 1 this utility model embodiment.
Fig. 2 is that the guiding-tube bend section of this utility model embodiment is bent back sketch map ().
Fig. 3 is the guiding-tube bend section free state sketch map () of this utility model embodiment.
Fig. 4 is the guiding-tube bend section free state sketch map (two) of this utility model embodiment.
Fig. 5 is the guiding-tube bend section of this utility model embodiment and the structural representation of the non-bending section of conduit.
Fig. 6 is the A-A cutaway view of Fig. 5.
Fig. 7 is the B-B profile of Fig. 2.
Fig. 8 is the structural representation of the axial support molectron of this utility model embodiment.
Fig. 9 is the handle arrangement sketch map of this utility model embodiment.
The specific embodiment
Below in conjunction with drawings and Examples this utility model is described in further detail.Each Reference numeral is in Figure of description: controlled curved guiding catheter 1, catheter adapter 2, outdoor handle 3, push rod 4, hold-down screw 5, the non-bending section 6 of conduit, guiding-tube bend section 7, metal backguy 8, development indicating 9, becket anchor point 10, conduit internal layer 11, conduit intermediate layer 12, catheter outer 13, axial support molectron 14, backguy chamber 15, catheter lumen 16, axial support molectron internal layer 17, axial support molectron intermediate layer 18, axial support molectron skin 19, push rod inner chamber 20, stopper slot 21, damped ring 22, spacer pin 23, through hole 24, anchorage shoe 25, catheter channel 26, backguy passage 27.
As shown in Figure 1, controlled curved guiding catheter 1 of the present utility model, to far-end, being linked in sequence by catheter adapter 2, handle and conduit constitutes from near-end.Conduit is tubulose, length is 600mm～1450mm, and internal diameter is 0.6mm～6.0mm, and external diameter is 1mm～7mm, connected and composed by non-bending section 6 two parts of the guiding-tube bend section 7 that is positioned at one section of far-end and the conduit that is connected with guiding-tube bend section 7, guiding-tube bend section 7 length are 20mm～100mm.The distal end of guiding-tube bend section 7 is equipped with development indicating 9, is equipped with becket anchor point 10 near near-end one side of development indicating 9.Be provided with metal backguy 8 in the conduit, metal backguy 8 far-ends and becket anchor point 10 are welded to connect, and near-end is fixedly connected on the handle.
As shown in Figure 2, guiding-tube bend section 7 is linearity in free state, and the far-end of guiding-tube bend section 7 can be operated control by the doctor and be bent, and the angle that is bent is: 0＜angle≤270 °.
As shown in Figure 3, the part of guiding-tube bend section 7 between development indicating 9 and becket anchor point 10, be bending in free state, bending is 90 °, can be 0＜angle≤90 °, the angle that is bent is: 0＜angle≤270 °, the direction that is bent is opposite in the direction of free state bending with guiding-tube bend section 7.
As shown in Figure 4, in the junction of guiding-tube bend section 7 and the non-bending section 6 of conduit, be bending in free state, bending is 90 °, can be 0＜angle≤90 °, the angle that is bent is: 0＜angle≤270 °, the direction that is bent is opposite in the direction of free state bending with guiding-tube bend section 7.
As shown in Figure 5, the non-bending section of guiding-tube bend section 7 and conduit 6 is made of three-decker, is respectively conduit internal layer 11, conduit intermediate layer 12 and catheter outer 13, and catheter outer 13 is nested with outside conduit internal layer 11, and conduit intermediate layer 12 is embedded in the catheter outer 13.Conduit internal layer 11 adopts politef, makes conduit have smooth inner chamber 16, and conduit internal layer 11 internal diameters are 0.6mm～6.0mm, thick 0.02mm～0.1mm.Conduit intermediate layer 12 is tinsel rustless steel or nitinol alloy wire mesh grid, and the silk footpath is 0.02mm～0.1mm, and density is 30PPI～100PPI(per inch order number), woven wire cloth makes conduit have good fracture resistance.It is macromolecule polymer material block polyamide, nylon or the polyurethane of 25D～72D that catheter outer 13 adopts hardness, constitutes the non-bending section 6 of guiding-tube bend section 7 and conduit respectively.Guiding-tube bend section 7 adopts soft relatively macromolecule polymer material, is 25D as hardness, and the non-bending section 6 of conduit adopts the higher relatively macromolecule polymer material of hardness, is 72D as hardness.The external diameter of catheter outer 13 is 1mm～7mm.Development indicating 9 adopt ring-types platinumiridio, platinum, gold, tantalum, tungsten, tungstenic macromolecular material or contain Bi
2O
3Macromolecular material.Becket anchor point 10 is rustless steel, Nitinol or platinumiridio ring.Development indicating 9 is embedded in the catheter outer 13 of guiding-tube bend section 7 distal ends, and becket anchor point 10 is embedded near the catheter outer 13 of development indicating 9 near-ends one side, and the distance between becket anchor point 10 and the development indicating 9 is 4mm～30mm.Near-end one side at becket anchor point 10 begins, along the axial direction of conduit, between conduit internal layer 11 and the conduit intermediate layer 12, be formed with the backguy chamber 15 that the cross section is circular hole in the catheter outer 13.At the non-bending section 6 of conduit, be provided with axial support molectron 14 in the backguy chamber 15.The far-end of metal backguy 8 is welded to connect on becket anchor point 10, and metal backguy 8 is through the backguy chamber 15 of guiding-tube bend section 7, axial support molectron 14 endoporus of the non-bending section 6 of conduit, and near-end is connected with outdoor handle 3.When can absorbing metal backguy 8 stretchings, axial support assembly 14 to non-bending section 6 axial compressive forces, avoid the non-bending section 6 of conduit to occur bending and deformation.The near-end of the non-bending section 6 of conduit has mouth, is used for metal backguy 8 and stretches out from non-bending section 6 near-ends of conduit.
As shown in Figure 6, the cylindrical cavity 16 that conduit internal layer 11 forms, along axis one sidewall to the center of circle in evagination, form the depression in the face of catheter outer 13, catheter outer 13 is to the recess evagination, the cross section be that circular backguy chamber 15 is at evagination and between caving in.As shown in Figure 7, axial support molectron 14 is embedded in the backguy chamber 15 of the non-bending section 6 of conduit.The structure of backguy chamber 15 between evagination and depression makes in guiding-tube bend section 7 controlled being bent, and do not increase the wall thickness of conduit integral body.
As shown in Figure 8, axial support molectron 14 is nested with by three-decker and constitutes, and is respectively internal layer 17, intermediate layer 18 and outer 19.Internal layer 17 adopts politef, and internal diameter is 0.25mm～2.5mm, thick 0.02mm～0.1mm.Intermediate layer 18 is tinsel stainless steel silk, tungsten filament, cochrome silk, titanium alloy wire or the net of nitinol alloy wire braiding or the coil spring shape of coiling.Silk wiry footpath is 0.01mm～0.1mm, and the density of mesh grid is 30PPI～200PPI, and the coil spring shape external diameter is 0.3mm～3.0mm, and pitch is 0.02mm～0.2mm.Outer 19 is high molecular polymer polyimides, polyether-ether-ketone, nylon, block polyamide or polyurethane, and external diameter is 0.4mm～3.1mm.The internal diameter of axial support molectron 14 can guarantee that greater than the external diameter of metal backguy 8 the smooth and easy of metal backguy 8 passes through.
It is stainless steel silk or the nitinol alloy wire of 0.1mm～0.5mm that the silk footpath is adopted in metal backguy 8.
As shown in Figure 9, handle is provided with push rod 4 and outdoor handle 3, and push rod 4 and outdoor handle 3 forms being slidingly connected vertically.The near-end of push rod 4 puts in a section of outdoor handle 3 through hole far-end vertically.Push rod 4 is shaped as cylindric, and conduit passes push rod 4 along the inner chamber (endoporus) 20 of axis for non-curved section 6, is fixed on the push rod 4.
Form the projection in an outside week on the excircle of the far-end of push rod 4 by machining, projection is used for conveniently releasing or drawing in when the doctor operates push rod 4.Middle part and near-end excircle at push rod 4 have two cannelures, be used for to embed damped ring 22, increase the damping between push rod 4 and outdoor handle 3 endoporus, prevent in the process that guiding-tube bend section 7 is bent, and push rod 4 moves to proximal direction.Between the outer surface of push rod 4, two cannelures, have the stopper slot 21 of a rectangular shape, the length direction of rectangle stopper slot 21 is parallel to the axis direction of push rod 4, one section insertion that the spacer pin 23 that is used for connecting on the outdoor handle 3 inwardly stretches out outdoor handle 3 pin-and-holes wherein, make spacer pin 23 limit the stroke that push rod 4 moves relative to outdoor handle 3 axis along its length direction activity in stopper slot 21.
Outdoor handle 3 is shaped as cylindric, in the distal portions of outdoor handle 3, the position that push rod 4 stretches into its through hole, radially has pin-and-hole on the wall of cylinder, is used for inserting spacer pin 23, and spacer pin 23 inwardly stretches out in one section insertion stopper slot 21 of pin-and-hole.The proximal part of outdoor handle 3 is provided with an anchorage shoe 25 in the through hole, anchorage shoe 25 forms dismountable the connection with outdoor handle 3 in through hole, as be threaded, the built-in collar in two ends or boss cooperate with built-in collar.Anchorage shoe 25 is shaped as column, and its axis is provided with two passages (through hole) in anchorage shoe 25 upper edges, is respectively and the catheter channel 26 of outdoor handle 3 axis coaxles and the backguy passage 27 parallel with outdoor handle 3 axis.Lateral wall at the backguy passage 27 of outdoor handle 3 walls and anchorage shoe 25, along outdoor handle 3 radially, have screw, be used for screwing in hold-down screw 5, have the through hole 24 with hold-down screw 5 axis normal near the end of hold-down screw 5, when hold-down screw 5 screwed in the screw of outdoor handle 3 and anchorage shoe 25, through hole 24 was communicated with backguy passage 27.The near-end of the non-bending section 6 of conduit stretches out outdoor handle 3 through inner chamber, the catheter channel 26 of push rod 4, is connected with catheter adapter 2.Metal backguy 8 is stretched out from the proximal openings of the non-bending section 6 of conduit, through backguy passage 27 and pass the through hole 24 of hold-down screw 5.Hold-down screw 5 is rotated a certain angle can be with metal backguy 8 fixing and lockings on outdoor handle 3.
The female Luer of standard is adopted in catheter adapter 2.
When the doctor performs the operation, one holds outdoor handle 3, another hands (far-end) forward pushes away or (near-end) pulling-pushing rod 4 backward, because of screw 5 lockings that are fixed of the near-end of metal backguy 8, be equivalent to loosen or strain metal backguy 8, the non-bending section 6 of conduit does not produce waveform or arc-shaped bend, the far-end of guiding-tube bend section 7 occurs bending and deformation, the relative displacement of control outdoor handle 3 and push rod 4, can control the degree of crook of guiding-tube bend section 7 far-ends, realize that the distal end of catheter bending is controlled, reach and use same conduit can enter a left side, right coronary artery shortens operating time, alleviates the patient suffering, improve the safety of percutaneous coronary intervention operation, also be fit to the heart of different sizes and the coronary artery of different openings.The wall thickness of the not obvious increase conduit of controlled curved guiding catheter of the present utility model, compact conformation, cost is low.
Controlled curved guiding catheter of the present utility model can adopt following preparation method to obtain, and may further comprise the steps:
One, make the axial support molectron,
Internal layer adopts politef, and internal diameter is 0.25mm～2.5mm, thick 0.02mm～0.1mm, and length is 40cm～130cm.
It is stainless steel silk, tungsten filament, cochrome silk, titanium alloy wire or the nitinol alloy wire of 0.01mm～0.1mm that intermediate layer material adopts the silk footpath, the silk number is 8～32, be woven into the net of 30～200PPI, the braider that adopts Grand Technology (Shenzhen) Co., Ltd. to make, rotating speed 70 ~ 180r/min.Or employing U.S. RothGreaves ﹠amp; The L80 coiling machine of Associates Inc company, rotating speed is 5 ~ 20r/min, and turning to external diameter is 0.3mm～3.0mm, and pitch is the coil spring shape of 0.02mm～0.2mm.
Cladding material is high molecular polymer polyimides, polyether-ether-ketone, nylon, block polyamide or polyurethane, and external diameter is 0.4mm～3.1mm.
Being nested with at external diameter by level internal layer, intermediate layer, skin is 0.25mm～2.5mm, length is on the metal or plastics plug of 40cm～130cm, putting internal diameter outside is 1.0 ~ 3.0mm, shrinkage ratio is the fluorinated ethylene propylene copolymer FEP heat-shrinkable tube of 1.3:1 ~ 2:1, Reflow-2203-44 type rheology machine with U.S. USAAT INC company fuses together the three, rheology temperature 380 ~ 450 ℉, rheology speed 0.08 ~ 0.25cm/s, after naturally cooling to room temperature, peel heat-shrinkable tube off, extract the making that plug is finished axial support molectron 14.
Two, make conduit,
The conduit internal layer adopts polyfluortetraethylene pipe, and internal diameter is 0.6mm～6.0mm, thick 0.02mm～0.1mm, long 600mm～1450mm.
It directly is 0.02mm～0.1mm stainless steel silk or nitinol alloy wire that 8～32 rhizoids are adopted in the conduit intermediate layer, is woven into the wire netting of 30PPI～100PPI, with the braider of Grand Technology (Shenzhen) Co., Ltd., rotating speed 70 ~ 180r/min.
It is macromolecule polymer material block polyamide, nylon or the polyurethane tube of 25D～72D that catheter outer adopts hardness, and external diameter is 1mm～7mm.The guiding-tube bend section adopts soft relatively high molecular polymerization property management, is 25D as hardness, long 10mm～100mm.The non-bending section of conduit adopts the higher relatively high molecular polymerization property management of hardness, is 72D as hardness, long 600mm～1400mm.
The development labelling adopts the village, Hong Kong to believe the macromolecular material of the platinumiridio of ten thousand rich noble metal company limiteies, platinum, gold, tantalum, tungsten, tungstenic or contains Bi
2O
3The macromolecular material ring, be of a size of 0.6mm～6.0mm.
The becket anchor point adopts rustless steel, Nitinol or the platinumiridio ring of Yangzhou brocade instrument precision tube company limited, is of a size of 0.6mm～6.0mm.
It is stainless steel silk or the nitinol alloy wire of 0.1mm～0.5mm that the silk footpath is adopted in the metal backguy, long 700mm～1600mm.One end of metal backguy is welded on the becket anchor point, adopts the laser-beam welding machine of Wuhan sky above Hubei and Hunan industrial lasers equipment company limited, welding current is 75A～200A, and pulsewidth is 2ms～10ms, and the other end of metal backguy passes the axial support molectron.
(1) being nested with the conduit internal layer at external diameter is 0.6mm～6.0mm, and length is 600mm～1450mm, has along axis on the metal mandrel of groove.(2) in order from far-end, the becket anchor point of development labelling, band metal backguy is nested with the position that is positioned at the guiding-tube bend section at the conduit internal layer, the distance between development labelling and the becket anchor point is 4mm～30mm.(3) the axial support molectron is arranged on vertically the groove location of metal mandrel of the non-bending section of conduit of conduit internal layer.(4) the conduit intermediate layer is nested with outside becket anchor point and axial support molectron.(5) be nested with catheter outer outside the conduit intermediate layer, the catheter outer of long 10mm～100mm is nested with at far-end.(6) putting internal diameter outside catheter outer is 1.3 ~ 9.5mm, shrinkage ratio is the fluorinated ethylene propylene copolymer FEP heat-shrinkable tube of 1.3 ~ 2:1, Reflow-2203-44 type rheology machine with U.S. USA AT INC company fuses together each layer of conduit, rheology temperature 380 ~ 450 ℉, rheology speed 0.08 ~ 0.25cm/s, naturally cool to room temperature after, peel heat-shrinkable tube off, extract plug, obtain conduit.
Three, push rod, outdoor handle, spacer pin, anchorage shoe and hold-down screw adopt the medical stainless steel material, press the existing machinery processing method and make.Catheter adapter is the standard Luer joint of outsourcing.
Four, assembling, catheter proximal end is packed into from the hole of push rod far-end and stretch out push rod, with AB glue conduit and push rod are adhesively fixed, with pack into the through hole (inner chamber) of outdoor handle near-end of anchorage shoe, to stretch out the conduit of push rod by the catheter channel of anchorage shoe, the metal backguy is by the backguy passage of anchorage shoe simultaneously, and pass through hole on the hold-down screw, the outdoor handle near-end is begun to be nested with on push rod from the push rod far-end, spacer pin inserts and puts in stopper slot from the pin-and-hole of outdoor handle, and the rotation hold-down screw can the fixing metal backguy.With AB glue that catheter proximal end and catheter adapter is bonding at the catheter proximal end that stretches out outdoor handle.AB glue is the happy safe epoxy AB glue of M-31CL.
Embodiment, the external diameter of controlled curved guiding catheter is 2.33mm, and effective length (conduit exposes the length of handle) is 1000mm, and the guiding-tube bend section is 90 ° of bendings under free state, the non-bending section of conduit linear state under free state, the maximum bend angle of distal end of catheter is 270 °.
Animal experiment, select one of 20 kilograms of dog of body weight for use, this dog left and right sides coronary stenosis, adopt the controlled curved guiding catheter of present embodiment and supporting convergent divergent channel, 2.0mm * 20mm PTCA(percutaneous coronary endoluminal vascular plasty Percutaneous transluminal coronary angioplasty) foley's tube and adapted seal wire (0.014 "; 195cm), superhard seal wire (0.035 ", 260cm), puncture sheath, Y joint accessory one cover.Femoral artery puncture is sent superhard seal wire near the position arteria coronaria entrance; Convergent divergent channel is inserted from the joint of controlled curved guiding catheter, watch the development indicating of controlled curved guiding catheter, the combination of convergent divergent channel and controlled curved guiding catheter is sent near the position arteria coronaria entrance along superhard seal wire; Withdraw from superhard seal wire and convergent divergent channel, joint at controlled curved guiding catheter connects a Y joint, adjust the position of conduit in blood vessel, make 90 ° of bending sections of far-end arteria coronaria entrance dorsad, because the far-end of backguy is fixed on distal end of catheter by the becket anchor point, near-end is fixed on the outdoor handle with hold-down screw by anchorage shoe, when the palm of the hand is held outdoor handle, thumb pushes to (preceding) far away end, or to nearly (back) end pulling-pushing rod, can change the degree of crook of the guiding-tube bend section of distal end of catheter, thumb pushes push rod forward to highest distance position, and the spacer pin on the outdoor handle slides into the near-end of push rod stopper slot at this moment, and the curved distal tune is maximum 270 ° of bendings, the push rod of slowly pulling back makes the remote port of conduit enter to the arteria coronaria entrance; Inject contrast agent to arteria coronaria from the side opening of Y joint through controlled curved guiding catheter, confirm the coronary stenosis position; With 0.014 ", the 195cm seal wire enters from the positive hole of Y joint, enters arteria coronaria and passes the angiostenosis position along controlled curved guiding catheter; With the PTCA foley's tube along 0.014 ", the 195cm seal wire enters into the coronary stenosis position, and makes the development labelling at sacculus two ends be positioned at the two ends of narrow location, full sacculus is expanded the angiostenosis position; The expansion after-contraction sacculus that finishes, with the PTCA foley's tube together with 0.014 ", the 195cm seal wire is together withdrawn from; The twisting push rod rotates a certain angle controlled curved guiding catheter, and make controlled curved guiding catheter make it enter to another arteria coronaria entry position according to the method described above, reenter 0.014 according to the method described above ", 195cm seal wire and PTCA foley's tube also carry out balloon expandable to the angiostenosis position; After expansion finishes foley's tube is shunk and retreat to controlled curved guiding catheter, and connect controlled curved guiding catheter and together withdraw from external.By the blood circumstance that angiographic method is observed previous angiostenosis position, blood flow is unobstructed, finishes the operation process of this coronary stenosis balloon expandable.
In the present embodiment, controlled curved guiding catheter of the present utility model be used for to cooperate the balloon expandable operation, needs other apparatuses such as support, seal wire, sacculus are sent to arteria coronaria easily in diagnosis or treatment, all can adopt controlled curved guiding catheter of the present utility model.
Claims (10)
1. controlled curved guiding catheter, be provided with conduit, the near-end of conduit is connected with handle, it is characterized in that: the far-end of described conduit is the guiding-tube bend section (7) of length 20mm～100mm, guiding-tube bend section (7) connects the far-end of metal backguy (8), the near-end of metal backguy (8) is connected on the handle, and handle is through the bending of metal backguy (8) control guiding-tube bend section (7).
2. controlled curved guiding catheter according to claim 1, it is characterized in that: the distal end of described guiding-tube bend section (7) is equipped with development indicating (9), the near-end of development indicating (9) is equipped with becket anchor point (10), distance between becket anchor point (10) and the development indicating (9) is 4mm～30mm, and described metal backguy (8) far-end and becket anchor point (10) are welded to connect.
3. controlled curved guiding catheter according to claim 2, it is characterized in that: described guiding-tube bend section (7) is linearity in free state, and the angle that is bent is: 0＜angle≤270 °; Or described guiding-tube bend section (7) is bending in free state, and crooked angle is: 0＜angle≤90 °, the angle that is bent is: 0＜angle≤270 °, the direction that is bent is opposite in the direction of free state bending with guiding-tube bend section (7).
4. controlled curved guiding catheter according to claim 3, it is characterized in that: the part of described guiding-tube bend section (7) between development indicating (9) and becket anchor point (10) is bending in free state; Or the junction of described guiding-tube bend section (7) and the non-bending section of conduit (6), be bending in free state.
5. controlled curved guiding catheter according to claim 1, it is characterized in that: described conduit is connected and composed by guiding-tube bend section (7) and the non-bending section of conduit (6) of far-end.
6. controlled curved guiding catheter according to claim 5, it is characterized in that: described guiding-tube bend section (7) and the non-bending section of conduit (6) are provided with conduit internal layer (11), conduit intermediate layer (12) and catheter outer (13), catheter outer (13) is nested with outside conduit internal layer (11), and conduit intermediate layer (12) are embedded in the catheter outer (13); Described conduit internal layer (11) adopts politef, conduit intermediate layer (12) is woven wire cloth, it is macromolecule polymer material block polyamide, nylon or the polyurethane of 25D～72D that catheter outer (13) adopts hardness, guiding-tube bend section (7) adopts soft relatively macromolecule polymer material, and the non-bending section of conduit (6) adopts the higher relatively macromolecule polymer material of hardness; Described becket anchor point (10) is embedded in the catheter outer (13).
7. controlled curved guiding catheter according to claim 6 (1) is characterized in that: near-end one side of described becket anchor point (10), and along the axial direction of conduit, being formed with the cross section in catheter outer (13) is poroid backguy chamber (15); At the non-bending section of conduit (6), be provided with axial support molectron (14) in the backguy chamber (15), metal backguy (8) is arranged in axial support molectron (14) hole of the backguy chamber (15) of guiding-tube bend section (7) and the non-bending section of conduit (6): described axial support molectron (14) is provided with internal layer (17), intermediate layer (18) and outer (19), described internal layer (17) adopts politef, intermediate layer (18) is the net of metal wire knitted or the coil spring shape of coiling, and outer (19) are the high molecular polymer polyimides, polyether-ether-ketone, nylon, block polyamide or polyurethane.
8. controlled curved guiding catheter according to claim 1 (1), it is characterized in that: described handle is provided with push rod (4) and the outdoor handle (3) of tubular, the near-end of push rod (4) puts in a section of outdoor handle (3) through hole far-end vertically, is formed with damping and is slidingly connected; Be provided with anchorage shoe (25) in one section of described outdoor handle (3) through hole near-end, the near-end of described metal backguy (8) is connected on the anchorage shoe (25).
9. controlled curved guiding catheter according to claim 8 (1), it is characterized in that: have stopper slot (21) on the excircle of described push rod (4), the length direction of stopper slot (21) is parallel to the axis direction of push rod (4); Described outdoor handle radially has pin-and-hole on (3), inserts limited position pin (23) in the pin-and-hole, and spacer pin (23) inwardly stretches out in one section insertion stopper slot (21) of pin-and-hole.
10. controlled curved guiding catheter according to claim 9 (1), it is characterized in that: described anchorage shoe (25) is shaped as column, is provided with and the catheter channel (26) of outdoor handle (3) axis coaxle and the backguy passage (27) parallel with outdoor handle (3) axis at its axis of anchorage shoe (25) upper edge; In the lateral wall of the backguy passage (27) of outdoor handle (3) wall and anchorage shoe (25), have the screw that screws in hold-down screw (5); Have the through hole (24) with hold-down screw (5) axis normal near the end of hold-down screw (5), when hold-down screw (5) screwed in the screw of outdoor handle (3) and anchorage shoe (25), through hole (24) was communicated with backguy passage (27).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320045339 CN203060553U (en) | 2013-01-28 | 2013-01-28 | Bending controllable guiding catheter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320045339 CN203060553U (en) | 2013-01-28 | 2013-01-28 | Bending controllable guiding catheter |
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|---|---|
| CN203060553U true CN203060553U (en) | 2013-07-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320045339 Expired - Fee Related CN203060553U (en) | 2013-01-28 | 2013-01-28 | Bending controllable guiding catheter |
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| CN (1) | CN203060553U (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103071230A (en) * | 2013-01-28 | 2013-05-01 | 湖南埃普特医疗器械有限公司 | Controllable bent guiding catheter and manufacture method thereof |
| CN103816607A (en) * | 2014-03-06 | 2014-05-28 | 陈�峰 | Multifunctional fishhook catheter for use in nerve involvement angiography |
| CN104224314A (en) * | 2014-10-13 | 2014-12-24 | 湖南埃普特医疗器械有限公司 | Guide catheter |
| CN105343990A (en) * | 2015-12-07 | 2016-02-24 | 湖北康泉医疗科技有限责任公司 | Multifunctional drainage catheter provided with locking device and capable of being washed in closed recirculation mode |
| CN107174332A (en) * | 2017-05-22 | 2017-09-19 | 科塞尔医疗科技（苏州）有限公司 | Conduit with plane deflection characteristic |
| WO2019019937A1 (en) * | 2017-07-27 | 2019-01-31 | 先健科技(深圳)有限公司 | Adjustable curved sheath and medical instrument |
| CN110339455A (en) * | 2019-06-24 | 2019-10-18 | 郑州大学第一附属医院 | A kind of angiography catheter of adjustable end bending angle |
| WO2020088138A1 (en) * | 2018-10-31 | 2020-05-07 | 杭州唯强医疗科技有限公司 | Bend adjusting handle and bend-adjustable catheter |
| CN111632242A (en) * | 2019-03-01 | 2020-09-08 | 孙扬 | Direction-controllable tracheal catheter guiding device |
| CN113164701A (en) * | 2018-12-06 | 2021-07-23 | 奇斯药制品公司 | Laryngeal mask airway device and method of administering a drug through a laryngeal mask airway device |
| CN113350660A (en) * | 2021-07-20 | 2021-09-07 | 深圳市赛诺思医疗科技有限公司 | Catheter assembly |
| CN114404779A (en) * | 2021-12-29 | 2022-04-29 | 中国医学科学院阜外医院 | Ventricular catheter for cardiovascular interventional pump with adjustable angle |
| CN116038117A (en) * | 2023-02-01 | 2023-05-02 | 上海玮启医疗器械有限公司 | Metal stay wire crimping welding tool for catheter and operation method thereof |
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| CN103071230A (en) * | 2013-01-28 | 2013-05-01 | 湖南埃普特医疗器械有限公司 | Controllable bent guiding catheter and manufacture method thereof |
| CN103071230B (en) * | 2013-01-28 | 2014-12-03 | 湖南埃普特医疗器械有限公司 | Controllable bent guiding catheter and manufacture method thereof |
| CN103816607A (en) * | 2014-03-06 | 2014-05-28 | 陈�峰 | Multifunctional fishhook catheter for use in nerve involvement angiography |
| CN104224314A (en) * | 2014-10-13 | 2014-12-24 | 湖南埃普特医疗器械有限公司 | Guide catheter |
| CN105343990A (en) * | 2015-12-07 | 2016-02-24 | 湖北康泉医疗科技有限责任公司 | Multifunctional drainage catheter provided with locking device and capable of being washed in closed recirculation mode |
| CN107174332A (en) * | 2017-05-22 | 2017-09-19 | 科塞尔医疗科技（苏州）有限公司 | Conduit with plane deflection characteristic |
| CN107174332B (en) * | 2017-05-22 | 2024-02-02 | 科塞尔医疗科技（苏州）有限公司 | Catheter with planar deflection characteristics |
| WO2019019937A1 (en) * | 2017-07-27 | 2019-01-31 | 先健科技(深圳)有限公司 | Adjustable curved sheath and medical instrument |
| WO2020088138A1 (en) * | 2018-10-31 | 2020-05-07 | 杭州唯强医疗科技有限公司 | Bend adjusting handle and bend-adjustable catheter |
| CN113164701A (en) * | 2018-12-06 | 2021-07-23 | 奇斯药制品公司 | Laryngeal mask airway device and method of administering a drug through a laryngeal mask airway device |
| CN111632242A (en) * | 2019-03-01 | 2020-09-08 | 孙扬 | Direction-controllable tracheal catheter guiding device |
| CN110339455A (en) * | 2019-06-24 | 2019-10-18 | 郑州大学第一附属医院 | A kind of angiography catheter of adjustable end bending angle |
| CN113350660A (en) * | 2021-07-20 | 2021-09-07 | 深圳市赛诺思医疗科技有限公司 | Catheter assembly |
| CN114404779A (en) * | 2021-12-29 | 2022-04-29 | 中国医学科学院阜外医院 | Ventricular catheter for cardiovascular interventional pump with adjustable angle |
| CN114404779B (en) * | 2021-12-29 | 2023-07-07 | 中国医学科学院阜外医院 | Angle-adjustable heart chamber catheter for cardiovascular intervention pump |
| CN116038117A (en) * | 2023-02-01 | 2023-05-02 | 上海玮启医疗器械有限公司 | Metal stay wire crimping welding tool for catheter and operation method thereof |
| CN116038117B (en) * | 2023-02-01 | 2023-08-04 | 上海玮启医疗器械有限公司 | Metal stay wire crimping welding tool for catheter and operation method thereof |
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