CN204158527U - The subsidiary conduit carried for guiding endovascular stent - Google Patents
The subsidiary conduit carried for guiding endovascular stent Download PDFInfo
- Publication number
- CN204158527U CN204158527U CN201420385797.7U CN201420385797U CN204158527U CN 204158527 U CN204158527 U CN 204158527U CN 201420385797 U CN201420385797 U CN 201420385797U CN 204158527 U CN204158527 U CN 204158527U
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- China
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- macromolecular material
- far
- catheter body
- endovascular stent
- subsidiary conduit
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Abstract
The utility model discloses a kind of subsidiary conduit for guiding endovascular stent to carry, the technical problem that solve is for transfer gantry provides the escape way without propelling resistance in interventional therapy.Subsidiary conduit for guiding endovascular stent to carry of the present utility model, be provided with the catheter body of tubulose, catheter body proximally reduces gradually to far-end hardness, the far-end of catheter body is angular cut, the far-end of angular cut connects the near-end of seal wire, seal wire adopts rustless steel or nitinol alloy wire, and length is 2 ~ 12mm, and diameter is 0.2-0.4mm.This utility model compared with prior art, the seal wire of far-end is thread, there is stronger penetration power, can efficiently puncture and pass through that severe stenosis is tortuous, calcification or CTO diseased region, the through section far-end connecting seal wire is angular cut, is conducive to passing through angiostenosis position, and can plays dissection to pathological changes, aspirate the thrombosis or speckle that cut, for transfer gantry provides one without the escape way of advance resistance simultaneously.
Description
Technical field
This utility model relates to a kind of medical apparatus and instruments, particularly a kind of conduit for interventional therapy.
Background technology
Intravascular stenting in interventional therapy operation refers on the basis that is shaped at tube chamber balloon expandable, inserts inner support in pathological changes section, to reach support blood vessels stenosis occlusion section, reduces blood vessel elasticity retraction and moulding again, keeps the object that tube chamber blood flow is unobstructed.Support can be carried smoothly safely and be released into diseased region, become the common problem that numerous medical personnels are concerned about.According to the delivery mode of support, Ink vessel transfusing uses support can be divided into balloon expandable stent and self-expandable stent.The pliability of self-expandable stent is better, is conducive to, by distortion blood vessel and calcify lesion, complying with the natural curvature of blood vessel wall, not easily compressive deformation, but shortcoming is that accurately location release is difficult, and price costly.Compared with self-expandable stent, it is good because of adherent performance that ball expands cribbing, do not produce prolonged expansion tension force to blood vessel wall, and registration when discharging, after release, cripetura phenomenon is not obvious, the advantages such as low price, and enjoys numerous doctors and patients to favor.But ball expands cribbing itself to be lacked flexibility, easily occurs obturation of subsiding after pressurized, pliability is not good enough, when it is through extreme distortion or folding blood vessel in operation process, or when running into harder speckle, cause the far-end of support to open, shovel into inner membrance firmly, thus cause support not arrive narrow positions, under serious conditions, the resistance of advance can cause support from the mobile even landing of sacculus.
The shortcoming at angiostenosis position is difficult to go beyond for overcoming ball expansion cribbing; a lot of invention designer improves foley's tube; stent delivery system with protruding sacculus disclosed in CN203169361U; it arranges the projection that diameter is greater than stent collapses state diameter at sacculus two ends; protruding formation at support two ends is made to protect step; protection operation process medium-height trestle is not subject to the impact of external stress; reduce support because the incidence rate come off of passing through pathological changes and being produced by guiding catheter in operation, the safety of raising operation.But how for whole foley's tube induction system opens up a unobstructed transfer passage, protective cradle by the impact of propelling resistance, not there is no effective solution.
Summary of the invention
The purpose of this utility model is to provide a kind of subsidiary conduit for guiding endovascular stent to carry, and the technical problem that solve is for transfer gantry provides the escape way without propelling resistance in interventional therapy.
This utility model is by the following technical solutions: a kind of subsidiary conduit for guiding endovascular stent to carry, be provided with the catheter body of tubulose, described catheter body proximally reduces gradually to far-end hardness, the far-end of catheter body is angular cut, the far-end of angular cut connects the near-end of seal wire, seal wire adopts rustless steel or nitinol alloy wire, and length is 2 ~ 12mm, and diameter is 0.2-0.4mm.
Wire distal shape of the present utility model is hemispherical.
The plane length that angular cut cut-crease lines of the present utility model is formed is of a size of 8-18mm.
Angular cut tube wall of the present utility model there is opening.
Opening shape of the present utility model is circle, semicircle, square, rectangle, triangle or trapezoidal.
Opening shape of the present utility model is square, by well word arrangement; Or described opening shape is rectangle, by product word arrangement; Or described opening shape is rectangle, along catheter body axis, by two row arrangements; Along catheter body axis, the spacing between described opening proximally arrives far-end and reduces gradually.
Seal wire of the present utility model be connected seal wire catheter body one section of region outside be coated with hydrophilic coating, length is for start proximally to extend 50-500mm from wire distal; Described hydrophilic coating is end table double-decker; Described underlayer thickness is 0.005-0.035mm, adopt the block thing of polyesters macromolecular material, polyethers macromolecular material or polyesters macromolecular material and polyethers macromolecular material, described polyesters macromolecular material is polyurethane or Merlon, and described polyethers macromolecular material is polyether polyol or EU; Described skin depth is 0.005-0.035mm, adopt macromolecular material or natural polymer and derivant thereof, described macromolecular material is more than one of polyvinyl pyrrolidone, polyethylene glycol oxide, polypropylene oxide and poly N-vinyl lactams, and described natural polymer and derivant thereof are chitin, chitosan or agarose.
Catheter body external diameter of the present utility model is 1.5 ~ 3.5mm, and internal diameter is 1.0 ~ 3.0mm, and tube wall is combined into by skin, intermediate layer and internal layer; Described skin adopts nylon, Polyurethane, polyetheramides resin, epoxy resin, polyetheramine or polyamide material, and thickness is 0.03-0.2mm; Described intermediate layer is metal external thread pipe, and adopt rustless steel, Nitinol, nichrome or titanium alloy tube, proximally to far-end, the pitch of metal external thread pipe fades to 0.5mm by 2mm; Described internal layer is hydrophilic coating, and hydrophilic coating is end table double-decker; Described underlayer thickness is 0.015-0.085mm, adopt the block thing of polyesters macromolecular material, polyethers macromolecular material or polyesters macromolecular material and polyethers macromolecular material, described polyesters macromolecular material is polyurethane or Merlon, and described polyethers macromolecular material is polyether polyol or EU; Described skin depth is 0.015-0.085mm, adopt macromolecular material or natural polymer and derivant thereof, described macromolecular material is more than one of polyvinyl pyrrolidone, polyethylene glycol oxide, polypropylene oxide and poly N-vinyl lactams, and described natural polymer and derivant thereof are chitin, chitosan or agarose.
Catheter body of the present utility model pushes section and through section connects and composes.
Catheter body near-end of the present utility model is connected with catheter block, and catheter block is Y type adapter, and Y type adapter is provided with a supervisor, and supervisor middle part is connected with an arm and forms y-type structure, and the angle between the near-end one section of arm and supervisor is acute angle.
This utility model compared with prior art, the seal wire of far-end is thread, there is stronger penetration power, can efficiently puncture and pass through that severe stenosis is tortuous, calcification or CTO diseased region, the through section far-end connecting seal wire is angular cut, is conducive to passing through angiostenosis position, and can plays dissection to pathological changes, aspirate the thrombosis or speckle that cut, for transfer gantry provides one without the escape way of advance resistance simultaneously.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model embodiment.
Fig. 2 is through section and the guide wire figure of this utility model embodiment.
Fig. 3 is the through section angular cut schematic diagram () of this utility model embodiment.
Fig. 4 is the through section angular cut schematic diagram (two) of this utility model embodiment.
Fig. 5 is the through section angular cut schematic diagram (three) of this utility model embodiment.
Fig. 6 is propelling movement section and the axial sectional view of through section of this utility model embodiment.
Fig. 7 is propelling movement section and the through section cross section view of this utility model embodiment.
Detailed description of the invention
Below in conjunction with drawings and Examples, this utility model is described in further detail.
As shown in Figure 1, the subsidiary conduit (conduit) for guiding endovascular stent to carry of the present utility model, proximally arrive far-end and be linked in sequence formed by catheter block 1, propelling movement section 3, through section 4 and seal wire 5, length is 1400 ~ 1800mm.The seal wire 5 of conduit be connected seal wire 5 through section 4 one section of region outside be coated with hydrophilic coating, the length A in hydrophilic coating region is for start proximally to extend 50-500mm from seal wire 5 far-end.Hydrophilic coating A is end table double-decker, and primer adopts the block thing of polyesters macromolecular material, polyethers macromolecular material or polyesters macromolecular material and polyethers macromolecular material.Polyesters macromolecular material is polyurethane or Merlon.Polyethers macromolecular material is polyether polyol or EU.Skin-material adopts macromolecular material or natural polymer and derivant thereof.Macromolecular material is more than one of polyvinyl pyrrolidone, polyethylene glycol oxide, polypropylene oxide and poly N-vinyl lactams, and natural polymer and derivant thereof are chitin, chitosan or agarose.Skin-material lubricate, thickness is 0.005-0.035mm, and primer plays fixed table layer material, and thickness is 0.005-0.035mm.Heat-shrink tube 2 is provided with outside the junction of catheter block 1 and propelling movement section 3.
Catheter block 1 is Y type adapter, and Y type adapter is provided with a supervisor, and supervisor middle part is connected with an arm and forms y-type structure, and the angle between the near-end one section of arm and supervisor is acute angle.The passage that catheter block 1 exchanges as a whole, avoids connecting Y-valve.The far-end of Y type adapter supervisor is coaxially connected with propelling movement section 3.
As shown in Figure 2, through section 4 is tubulose, proximally reduces gradually to far-end hardness.The far-end of through section 4 is angular cut, the axis out of plumb of the plane that angular cut cut-crease lines is formed and through section 4 pipe, and the plane length that angular cut cut-crease lines is formed is of a size of 8-18mm.The limit of angular cut seamlessly transits, and makes operation process medium-height trestle can pass angular cut smoothly in the pipe of through section 4 and enters diseased region.Angular cut tube wall has opening 9, angular cut tube wall hardness is reduced, there is flexibility, between thread seal wire 5 and through section 4 tubulose, form the hardness adapted and flexible transition syndeton.Opening 9 shape is circle, semicircle, square, rectangle, triangle or trapezoidal.This angular cut tube wall refers to the tube wall forming imperfect tubulose after through section 4 far-end is cut into angular cut, the tube wall part be retained in after cutting on through section 4 far-end body of namely cutting sth. askew.
The far-end of angular cut is welded to connect the near-end of seal wire 5, and seal wire 5 adopts rustless steel or nitinol alloy wire, and length is 2 ~ 12mm, and diameter is 0.2-0.4mm, and seal wire 5 distal end shape is hemispherical, avoids causing damage to blood vessel.
As shown in Figure 3, opening 9 shape on angular cut tube wall is square, and by well word arrangement, along through section 4 axis, the spacing between opening 9 proximally arrives far-end and reduces gradually.
As shown in Figure 4, opening 9 shape on angular cut tube wall is rectangle, and by product word arrangement, along through section 4 axis, the spacing between opening 9 proximally arrives far-end and reduces gradually.This arrangement mode is the optimal arrangement structure of the present embodiment.
As shown in Figure 5, opening 9 shape on angular cut tube wall is rectangle, and along through section 4 axis, by two row arrangements, the spacing between opening 9 proximally arrives far-end and reduces gradually.
As shown in Figure 6 and Figure 7, propelling movement section 3 and through section 4 form catheter body, and catheter body is tubulose, and external diameter is 1.5 ~ 3.5mm, and internal diameter is 1.0 ~ 3.0mm.The tube wall of catheter body is combined into by skin 6, intermediate layer 7 and internal layer 8 trilaminate material.The skin 6 of catheter body adopts polymeric material nylon, Polyurethane, polyetheramides resin, epoxy resin, polyetheramine or polyamide material, and thickness is 0.03-0.2mm.The intermediate layer 7 of catheter body is metal external thread pipe 7, adopt rustless steel, Nitinol, nichrome or titanium alloy tube, from pushing the near-end of section 3 to through section 4 far-end, the pitch of metal external thread pipe 7 fades to 0.5mm by 2mm, form by cut, formed proximally to the structure that far-end hardness reduces gradually, the propelling movement performance that near-end has been had, far-end has flexibility and easily passes through arteries.The internal layer 8 of catheter body is hydrophilic coating material, hydrophilic coating material is end table double-decker, and the primer be connected with intermediate layer 7 adopts the block thing of polyesters macromolecular material, polyethers macromolecular material or polyesters macromolecular material and polyethers macromolecular material.Polyesters macromolecular material is polyurethane or Merlon.Polyethers macromolecular material is polyether polyol or EU.Skin-material adopts macromolecular material or natural polymer and derivant thereof.Macromolecular material is more than one of polyvinyl pyrrolidone, polyethylene glycol oxide, polypropylene oxide and poly N-vinyl lactams, and natural polymer and derivant thereof are chitin, chitosan or agarose.The thickness of skin-material is 0.015-0.085mm, skin-material lubricate, and the thickness of primer is 0.015-0.085mm, and primer plays fixed table layer material.According to different preparation technologies, propelling movement section 3 and through section 4 can be produced once and be become catheter body, also can make respectively after pushing section 3 and through section 4 and connect and compose catheter body again.
Heat-shrink tube 2 adopts polyurethane elastomer, polyether elastomer or styrene series elastomer material, is coated on the junction of catheter block 1 and propelling movement section 3, plays buffering catheter block 1 and the stress pushing section 3 junction, the effect of armour tubing entirety.
When carrying out intravascular stenting, seal wire is sent to target arteria coronaria mouth from femoral artery or radial artery, guiding catheter withdraws from seal wire after the guiding of seal wire is sent to target arteria coronaria mouth, conduit of the present utility model is sent to after target arteria coronaria mouth through guiding catheter, continue to push conduit, through section 4 and seal wire 5 is made to stretch out guiding catheter far-end, go beyond the artery segment that target arteria coronaria mouth far-end is narrow, lead straight to tortuous or distortion arteries and revise, and then the foley's tube with balloon expandable stent is pushed to far-end in conduit of the present utility model, continuing propelling movement makes balloon expandable stent stretch out through section 4, pass through trimmed arteries, smoothly by tortuous section, make support by safety, deliver to far-end diseased region to be smoothly released.After completing support installing, first withdraw from foley's tube, then withdraw from conduit of the present utility model, finally withdraw from guiding catheter, operation terminates.
Seal wire 5 is thread, has stronger penetration power, can efficiently puncture and pass through that severe stenosis is tortuous, calcification or CTO pathological changes (occluding vascular section forward blood flow TIMI0 level, and off-period at least 3 months) position.Through section 4 far-end is angular cut, is conducive to passing through angiostenosis position, and can plays dissection to pathological changes.Blocking cap sealing is connected again, to make to form vacuum in conduit after the arm of Y type adapter is connected 6% standard Luer seal receptacle respectively with supervisor's near-end.The syringe of conventional 30ml, be connected on 6% standard Luer seal receptacle of Y type adapter arm, cut thrombosis or speckle can be aspirated, for transfer gantry provides one without the escape way of advance resistance.Propelling movement section 3 and through section 4 adopt inside and outside three-layer composite structure.The polymeric material of soft outer layer can ensure that the pipe shaft pushing section 3 and through section 4 has certain compliance and can effectively prevent pipe shaft to the damage of arterial blood tube wall.The screw thread of metallic intermediate layer male-pipe 7 ensure that the continuity pushing section 3 and through section 4 pipe shaft skeleton, make propelling movement section 3 and through section 4 possess certain intensity, turn round control property and propelling movement property, the gradient pitch of metal external thread pipe 7 makes far-end opposite proximal end comparatively soft simultaneously.The hydrophilic coating material foley's tube that can be with balloon expandable stent provides a smooth transfer passage.At the hydrophilic coating A that the head end 5 of conduit and one section of region of through section 4 apply, greatly can improve the passing through property of distal catheter portion, reduce the damage to arterial blood tube wall, improve success rate of operation.The Y type adapter of near-end, can avoid in operation process connecting Y-valve, improve the convenience of operation technique.
Conduit of the present utility model, for stent endoprosthesis provides the transfer gantry passage of a safety, the implantation surgery for the balloon expandable stent of pliability difference is especially true.Compared with prior art, feature is this utility model: 1. distal end of catheter penetration power is strong, efficiently can puncture and pass through severe stenosis, calcification or CTO diseased region.2. the angular cut structure of tube passing therethrough section can go beyond angiostenosis position smoothly, can cut again to pathological changes, aspirates the thrombosis falling to cut or speckle simultaneously, greatly improves passing through property and safety.3. Threaded conduit body inside the metal external thread pipe ensures the coherence of the catheter skeleton, the pipe body of the composite structure of three layers, so that the pipe body has a strong flexibility, but also has good strength and torsional control, can smoothly through the Gan curved vessel, arrived at the distal lesions, provide strong support for the support of the channel placement.Simultaneously conduit cavity road hydrophilic coating is carried for support again and is provided a smooth passage.4. catheter block adopts Y type adapter, can avoid connecting Y-valve, greatly improve the convenience of operation technique in operation process.5. distal end of catheter coating hydrophilic coating, greatly can improve the passing through property of distal end of catheter, reduce the damage to blood vessel wall, improves success rate of operation.
Claims (10)
1. the subsidiary conduit for guiding endovascular stent to carry, be provided with the catheter body of tubulose, it is characterized in that: described catheter body proximally reduces gradually to far-end hardness, the far-end of catheter body is angular cut, the far-end of angular cut connects the near-end of seal wire (5), seal wire (5) adopts rustless steel or nitinol alloy wire, and length is 2 ~ 12mm, and diameter is 0.2-0.4mm.
2. the subsidiary conduit for guiding endovascular stent to carry according to claim 1, is characterized in that: described seal wire (5) distal end shape is hemispherical.
3. the subsidiary conduit for guiding endovascular stent to carry according to claim 1, is characterized in that: the plane length that described angular cut cut-crease lines is formed is of a size of 8-18mm.
4. the subsidiary conduit for guiding endovascular stent to carry according to claim 1, is characterized in that: described angular cut tube wall has opening (9).
5. the subsidiary conduit for guiding endovascular stent to carry according to claim 4, is characterized in that: described opening (9) shape is circle, semicircle, square, rectangle, triangle or trapezoidal.
6. the subsidiary conduit for guiding endovascular stent to carry according to claim 5, is characterized in that: described opening (9) shape is square, by well word arrangement; Or described opening (9) shape is rectangle, by product word arrangement; Or described opening (9) shape is rectangle, along catheter body axis, by two row arrangements; Along catheter body axis, the spacing between described opening (9) proximally arrives far-end and reduces gradually.
7. the subsidiary conduit for guiding endovascular stent to carry according to claim 1, it is characterized in that: described seal wire (5) be connected seal wire (5) catheter body one section of region outside be coated with hydrophilic coating, length is for start proximally to extend 50-500mm from seal wire (5) far-end; Described hydrophilic coating is end table double-decker; Described underlayer thickness is 0.005-0.035mm, adopt the block thing of polyesters macromolecular material, polyethers macromolecular material or polyesters macromolecular material and polyethers macromolecular material, described polyesters macromolecular material is polyurethane or Merlon, and described polyethers macromolecular material is polyether polyol or EU; Described skin depth is 0.005-0.035mm, adopt macromolecular material or natural polymer and derivant thereof, described macromolecular material is more than one of polyvinyl pyrrolidone, polyethylene glycol oxide, polypropylene oxide and poly N-vinyl lactams, and described natural polymer and derivant thereof are chitin, chitosan or agarose.
8. the subsidiary conduit for guiding endovascular stent to carry according to claim 1, it is characterized in that: described catheter body external diameter is 1.5 ~ 3.5mm, internal diameter is 1.0 ~ 3.0mm, and tube wall is combined into by outer (6), intermediate layer (7) and internal layer (8); Described skin (6) adopts nylon, Polyurethane, polyetheramides resin, epoxy resin, polyetheramine or polyamide material, and thickness is 0.03-0.2mm; Described intermediate layer (7) is metal external thread pipe (7), and adopt rustless steel, Nitinol, nichrome or titanium alloy tube, proximally to far-end, the pitch of metal external thread pipe (7) fades to 0.5mm by 2mm; Described internal layer (8) is hydrophilic coating, and hydrophilic coating is end table double-decker; Described underlayer thickness is 0.015-0.085mm, adopt the block thing of polyesters macromolecular material, polyethers macromolecular material or polyesters macromolecular material and polyethers macromolecular material, described polyesters macromolecular material is polyurethane or Merlon, and described polyethers macromolecular material is polyether polyol or EU; Described skin depth is 0.015-0.085mm, adopt macromolecular material or natural polymer and derivant thereof, described macromolecular material is more than one of polyvinyl pyrrolidone, polyethylene glycol oxide, polypropylene oxide and poly N-vinyl lactams, and described natural polymer and derivant thereof are chitin, chitosan or agarose.
9. the subsidiary conduit for guiding endovascular stent to carry according to claim 8, is characterized in that: described catheter body pushes section (3) and through section (4) connects and composes.
10. the subsidiary conduit for guiding endovascular stent to carry according to claim 8, it is characterized in that: described catheter body near-end is connected with catheter block (1), catheter block (1) is Y type adapter, Y type adapter is provided with a supervisor, supervisor middle part is connected with an arm and forms y-type structure, and the angle between the near-end one section of arm and supervisor is acute angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420385797.7U CN204158527U (en) | 2014-07-14 | 2014-07-14 | The subsidiary conduit carried for guiding endovascular stent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420385797.7U CN204158527U (en) | 2014-07-14 | 2014-07-14 | The subsidiary conduit carried for guiding endovascular stent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204158527U true CN204158527U (en) | 2015-02-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420385797.7U Withdrawn - After Issue CN204158527U (en) | 2014-07-14 | 2014-07-14 | The subsidiary conduit carried for guiding endovascular stent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204158527U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104068952A (en) * | 2014-07-14 | 2014-10-01 | 业聚医疗器械(深圳)有限公司 | Auxiliary catheter for guiding delivery of endovascula stent |
| WO2020103350A1 (en) * | 2018-11-21 | 2020-05-28 | 南微医学科技股份有限公司 | Medical connecting device |
| CN113260404A (en) * | 2019-01-10 | 2021-08-13 | 雅培心血管系统公司 | Guidewire tip with roughened surface |
-
2014
- 2014-07-14 CN CN201420385797.7U patent/CN204158527U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104068952A (en) * | 2014-07-14 | 2014-10-01 | 业聚医疗器械(深圳)有限公司 | Auxiliary catheter for guiding delivery of endovascula stent |
| WO2020103350A1 (en) * | 2018-11-21 | 2020-05-28 | 南微医学科技股份有限公司 | Medical connecting device |
| KR20210001500U (en) * | 2018-11-21 | 2021-07-01 | 마이크로-테크 (난징) 코., 엘티디. | medical connection device |
| ES2836537R1 (en) * | 2018-11-21 | 2022-11-02 | Micro Tech Nanjing Co Ltd | MEDICAL DEVICE CONNECTOR |
| KR200497247Y1 (en) | 2018-11-21 | 2023-09-12 | 마이크로-테크 (난징) 코., 엘티디. | medical connector |
| CN113260404A (en) * | 2019-01-10 | 2021-08-13 | 雅培心血管系统公司 | Guidewire tip with roughened surface |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150218 Effective date of abandoning: 20150916 |
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| RGAV | Abandon patent right to avoid regrant |