CN203263993U - Fast switching guide catheter - Google Patents
Fast switching guide catheter Download PDFInfo
- Publication number
- CN203263993U CN203263993U CN201320161209.7U CN201320161209U CN203263993U CN 203263993 U CN203263993 U CN 203263993U CN 201320161209 U CN201320161209 U CN 201320161209U CN 203263993 U CN203263993 U CN 203263993U
- Authority
- CN
- China
- Prior art keywords
- extension
- guiding catheter
- push rod
- quick exchange
- hydrophilic coating
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- Expired - Lifetime
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Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/06—Body-piercing guide needles or the like
- A61M25/0662—Guide tubes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M2025/0004—Catheters; Hollow probes having two or more concentrically arranged tubes for forming a concentric catheter system
Abstract
The utility model discloses a fast switching guide catheter, and aims to solve the technical problem that blood vessels are damaged during operation. The fast switching guide catheter has a tubular extending section, wherein a plane formed by an orifice at the end part of a far end of the extending section is perpendicular to an axis of the extending section; a far end catheter body of the extending section is coated with a hydrophilic coating; the hydrophilic coating adopts a bottom-surface bilayer structure; the bottom layer of the hydrophilic coating is made of a polyester type macromolecule material, a polyether type macromolecule material or a polyester-polyether block copolymer; and the surface layer of the hydrophilic coating is made of a macromolecule material or a natural macromolecule material and a derivative of the macromolecule material. Compared with the prior art, the end part of the far end of the extending section adopts a straight head, and the catheter body is coated with the hydrophilic coating, so that the guide catheter is coaxial with a coronary opening easily, and damage to the coronary opening is reduced; and the hardness of the extending section is decreased sequentially from a near end to the far end, so that the end part of the far end of the extending section is very soft, damage to the blood vessels is avoided, and the success rate of an operation is improved.
Description
Technical field
This utility model relates to a kind of medical apparatus and instruments, particularly a kind of guiding catheter of percutaneous coronary intervention (pci) use.
Background technology
In recent years along with the progress of iconography equipment and the introducing of novel intervention equipment, percutaneous coronary intervention (pci) PCI has obtained development fast, but in the intervene operation process, a ubiquitous problem is can not be with the support smooth delivery of power to definite lesion locations, and this has also caused the mortality of present coronary artery intervene operation 5%.And as the basic passage of PCI operation, guiding catheter is widely used in the PCI operation, and the rear support force of guiding catheter is an important indicator that judges whether to complete the PCI operation., rise so the ratio of patients underwent intervention therapy via radial artery is lasting in recent years than having outstanding superiority through the femoral artery treatment due to patients underwent intervention therapy via radial artery; Yet patients underwent intervention therapy via radial artery needs guiding catheter that stronger support force is provided, and the support force that common guiding catheter provides usually is not enough to satisfy whole requirements of operation.Also need guiding catheter that stronger support is provided through situations such as some complicated coronary artery PCI of femoral artery treatment or anomalous origin of coronary arteries in addition.For above-mentioned reasons, occurred a kind ofly can utilizing dark method of inserting in the situation that do not increase guiding catheter external diameter size, the length of stretching out female conduit by sub-conduit increases the primary and secondary guiding catheter of the recoil of conduit in the treatment of radial artery or femoral artery.The primary and secondary guiding catheter also can be used to aspirate thrombi, speckle and fragment under special circumstances, for the pathological changes that has serious massive, and when the aspirator of standard is difficult to the thrombosis sucking-off, can be by this dark method of inserting, with the massive sucking-off.
In the primary and secondary guiding catheter of prior art, wherein a kind of Heartrail II " Fr5 is socketed in the conduit system in Fr6 " that is produced by Japanese Terumo company is the most outstanding, can satisfy the dark needs of inserting guiding catheter, increasing support force in most interventional therapys, but because the structure of sub-conduit is similar to female conduit, and than the long 20cm of female conduit, need haemostatic valve is dismantled and re-mounted in the process that it is imported female conduit, give in whole operation process and brought inconvenience; The another kind of sub-conduit of guideliner by the exploitation of U.S. Vascular Solution company, its main part is welded by one section Metallic rod and conduit extension, when supporting the use as female conduit with bigger guiding catheter, this sub-conduit directly can be sent into female conduit by Y-valve, the dark slotting and support force that double-layer tube provides of sub-conduit can be delivered to lesion locations smoothly with sacculus or support.Compare with Heartrail II conduit system, this sub-conduit more convenient operation in operation process, obviously outstanding support force effect especially when treating, trans-radial is arranged, but the easy fracture of weld of Metallic rod and catheter proximal end extension, in operation process, misoperation easily causes blood vessel to be damaged.
Summary of the invention
The purpose of this utility model is to provide a kind of quick exchange guiding catheter, and the technical problem that solve is that anti-hemostatic tube is damaged in operation process.
This utility model is by the following technical solutions: a kind of quick exchange guiding catheter, comprise the extension of tubulose, and the plane that the distal end mouth of pipe of described extension consists of is vertical with the extension axis, the external hydrophilic coating that scribbles of the distal tube of extension; Described hydrophilic coating is end table double-decker, and bottom adopts polyesters macromolecular material, polyethers macromolecular material or polyester-polyether block copolymer; Described polyesters macromolecular material is polyurethane or Merlon, and described polyethers macromolecular material is polyether polyol or EU; Macromolecular material or natural macromolecular material and derivant thereof are adopted in the top layer; Described natural macromolecular material and derivant thereof are chitin, chitosan or agarose.
Skin depth of the present utility model is 0.0001-0.025mm, and underlayer thickness is 0.0001-0.025mm.
The length of hydrophilic coating of the present utility model is 50-500mm.
The body of extension of the present utility model is made of skin, intermediate layer and internal layer; Described outer nylon, Polyurethane, polyetheramides resin, epoxy resin, polyetheramine or the polyamide material of adopting, connected to form by three to ten sections pipe shafts that hardness reduces successively from the near-end to the far-end, the length of pipe shaft is 1-300mm, and the body wall thickness is 0.03-0.2mm; Described intermediate layer is stainless steel silk or the nitinol alloy wire mesh grid of count 20-150 pixel/inch, and from near-end to far-end, establishment density is successively decreased successively; Described internal layer adopts politef, polyethylene, nylon or nylon elastomer.
Mesh grid of the present utility model is that the round braided wires of 0.015-0.1mm and thickness are that 0.01-0.05mm, width are that the flat braided wires mixed weaving of 0.03-0.2mm forms by diameter, or mesh grid is that 0.01-0.05mm, width are that the flat braided wires braiding of 0.03-0.2mm forms by thickness.
Extension of the present utility model near-end is connected with push rod, and push rod is comprised of the mandrel of inside and the polymeric layer that is coated on outside mandrel, and polymeric layer adopts and outer identical material, forms one with skin and is connected.
Polymeric layer of the present utility model is identical with the hardness of outer near-end.
The mouth of pipe of extension of the present utility model near-end and push rod junction is quick exchange hole, fast the axis of the normal on the plane that forms of the mouth of pipe of exchange hole and extension along distal direction in obtuse angle, the end tube wall of extension near-end and the far-end of push rod are connected smoothly; The radius of curvature in described push rod cross section is identical with the radius of extension pipe shaft.
The near-end of push rod of the present utility model is connected with catheter block, is equipped with heat-shrink tube outside catheter block and push rod junction.
Push rod of the present utility model is provided with the first Marking ring apart from the distal portion 400mm place of catheter block, and be separated by 100mm place is provided with the second Marking ring at the first Marking ring far-end, and the first Marking ring and the second Marking ring adopt platinum or iridium metals material.
this utility model compared with prior art, the extension distal end adopts straight peen and be coated with hydrophilic coating outside body, can make guiding catheter easily coaxial with the arteria coronaria mouth, the damage of minimizing to the arteria coronaria mouth, the extension adopts trilaminate material compound, the intermediate layer is from near-end to far-end, the mesh grid that establishment density is successively decreased successively, skin is formed by connecting by three to ten sections pipe shafts that hardness reduces successively from the near-end to the far-end, make the extension distal end very soft and have certain motility, can avoid the damage to blood vessel, make operation process more smooth, improve the success rate of operation, sacculus or support can enter the extension smoothly by quick exchange hole, also can be used as simultaneously a kind of aspirator uses, be used for thrombosis, the extraction of speckle and fragment.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the enlarged drawing at A place in Fig. 1.
Fig. 3 is the enlarged drawing at B place in Fig. 1.
Fig. 4 is the cross-sectional view of this utility model push rod.
Fig. 5 is the cross-sectional view of the first form of presentation in intermediate layer of the present utility model.
Fig. 6 is the cross-sectional view of the second preparation method in intermediate layer of the present utility model.
Fig. 7 is the longitudinal section of this utility model extension.
The specific embodiment
Below in conjunction with drawings and Examples, the technical solution of the utility model is described in further detail.
As shown in Figure 1, quick exchange guiding catheter of the present utility model is connected with catheter block 1, push rod 3 and extension 4 in turn from near-end to far-end.Be equipped with heat-shrink tube 2 outside catheter block 1 and push rod 3 junctions.
Plane and extension 4 axis vertical (straight peen) that the distal end mouth of pipe of extension 4 consists of.
The external hydrophilic coating 16 that scribbles of the distal tube of extension 4, hydrophilic coating 16 is 50-500mm along the length of body.Hydrophilic coating is end table double-decker, and primer adopts polyesters macromolecular material, polyethers macromolecular material or polyester-polyether block copolymer.The polyesters macromolecular material is polyurethane or Merlon.The polyethers macromolecular material is polyether polyol or EU.Skin-material adopts macromolecular material or natural macromolecular material and derivant thereof.Macromolecular material is more than one of polyvinyl pyrrolidone, polyethylene glycol oxide, polypropylene oxide and poly N-vinyl lactams, and natural macromolecular material and derivant thereof are chitin, chitosan or agarose.Adopting solution to apply drying obtains.Solvent adopts N, more than one in dinethylformamide, oxolane, ethyl acetate, butyl acetate, butanone, dehydrated alcohol, isopropyl alcohol, acetone, chloroform and toluene, surface solution concentration is 20.5～220.4g/100ml, and bottom solution concentration is 20.5～220.4g/100ml.Surface solution lubricate, bottom solution play fixedly surface solution.After dry, skin depth is 0.0001-0.025mm, and underlayer thickness is 0.0001-0.025mm.。
As shown in Figure 2, be provided with the first Marking ring 5 in push rod 3 apart from the distal portion 400mm place of catheter block 1, be separated by 100mm place is provided with X ray thoroughly of the second Marking ring 6, the first Marking rings 5 and the second Marking ring 6 at the first Marking ring 5 far-ends, adopts platinum or iridium metals material to make.
As shown in Figure 3, the axis of the normal on the plane of the mouth of pipe of exchange hole 7 formation and extension 4 along distal direction in obtuse angle fast, make the mouth of pipe of quick exchange hole 7 for oval, the end tube wall of extension 4 near-ends and the far-end of push rod 3 are connected smoothly, and the radius of curvature in push rod 3 cross sections is identical with the radius of extension 4 bodys, and sacculus or support can be entered in extension 4 by quick exchange hole 7 smoothly.
As shown in Figure 4, the cross section of push rod 3 is cambered surface, and push rod 3 is comprised of the mandrel 15 of inside and the polymeric layers 14 that are coated on outside mandrel 15.Mandrel 15 can adopt metal material rustless steel or Nitinol to make, can also adopt macromolecular material ultra-high molecular weight polyethylene or high-intensity engineering plastics to make, high-intensity engineering plastics are enhancement mode polyamide, Merlon, polyformaldehyde or polyphenylene oxide.Polymeric layer 14 adopts polymeric material nylon, polyurethane, polyetheramides resin, epoxy resin, polyetheramine or polyamide material to make.
As shown in Figure 7, extension 4 is composited by trilaminate material, is respectively skin 9, intermediate layer 10 and the less internal layer 11 of coefficient of friction.The outer 9 quick exchange holes 7 from near-end are connected to form by three to ten sections pipe shafts that hardness reduces successively to distal end, the length of every section pipe shaft is 1-300mm, outer 9 pipe thickness is 0.03-0.2mm, adopts polymeric material nylon, polyurethane, polyetheramides resin, epoxy resin, polyetheramine or the polyamide material identical with polymeric layer 14 to make.Polymeric layer 14 and outer 9 forms one and is connected, and identical with the hardness of outer 9 near-ends.
The specification of extension can be 4F, 5F, 6F or 7F, and the standard type guiding catheter specification of using that matches with it can be 5F, 6F, 7F or 8F.
In this utility model, mesh grid can be adopted two kinds of form of presentations, and as shown in Figure 5, mesh grid is that the round braided wires 12 of 0.015-0.1mm and thickness are that 0.01-0.05mm, width are that flat braided wires 13 mixed weavings of 0.03-0.2mm form by diameter.As shown in Figure 6, mesh grid is that 0.01-0.05mm, width are that the flat braided wires braiding of 0.03-0.2mm forms by thickness.
The sub-conduit that quick exchange guiding catheter of the present utility model uses as female catheter interior, can support the use with common standard type guiding catheter, in percutaneous coronary intervention (pci), especially when complicated coronary lesion and patients underwent intervention therapy via radial artery, in the situation that do not increase common standard type guiding catheter size, deeply slotting by quick exchange guiding catheter, improve the support force of the whole conduit system that female conduit and sub-conduit consist of.
In operation process, sacculus or support can enter the extension smoothly by quick exchange hole, also can be used as a kind of aspirator simultaneously and use, and are used for the extraction of thrombosis, speckle and fragment.
The polymeric layer of push rod mandrel outer cladding and the skin of extension use the identical polymeric material with excellent compatibility, link into an integrated entity, and can prevent both junction fractures.
The extension adopts trilaminate material compound, the intermediate layer is for becoming the mesh grid of PPI structure, skin is formed by connecting to the pipe shaft that distal end hardness reduces successively from quick exchange hole by three to ten sections, make extension far-end head end very soft and have certain motility, can avoid the damage to blood vessel, make operation process more smooth, the extension distal end adopts straight peen and is coated with hydrophilic coating, can make guiding catheter easily coaxial with the arteria coronaria mouth, the damage of minimizing to the arteria coronaria mouth improves success rate of operation.
Claims (10)
1. one kind exchanges guiding catheter fast, the extension (4) that comprises tubulose, it is characterized in that: the plane that the distal end mouth of pipe of described extension (4) consists of is vertical with extension (4) axis, the external hydrophilic coating (16) that scribbles of the distal tube of extension (4); Described hydrophilic coating is end table double-decker, and bottom adopts polyesters macromolecular material, polyethers macromolecular material or polyester-polyether block copolymer; Described polyesters macromolecular material is polyurethane or Merlon, and described polyethers macromolecular material is polyether polyol or EU; Macromolecular material or natural macromolecular material and derivant thereof are adopted in the top layer; Described natural macromolecular material and derivant thereof are chitin, chitosan or agarose.
2. quick exchange guiding catheter according to claim 1, it is characterized in that: described skin depth is 0.0001-0.025mm, underlayer thickness is 0.0001-0.025mm.
3. quick exchange guiding catheter according to claim 1, it is characterized in that: the length of described hydrophilic coating (16) is 50-500mm.
4. quick exchange guiding catheter according to claim 1 is characterized in that: the body of described extension (4) is by outer (9), intermediate layer (10) and internal layer (11) formation; Described skin (9) adopts nylon, Polyurethane, polyetheramides resin, epoxy resin, polyetheramine or polyamide material, connected to form by three to ten sections pipe shafts that hardness reduces successively from the near-end to the far-end, the length of pipe shaft is 1-300mm, and the body wall thickness is 0.03-0.2mm; Described intermediate layer (10) is stainless steel silk or the nitinol alloy wire mesh grid of count 20-150 pixel/inch, and from near-end to far-end, establishment density is successively decreased successively; Described internal layer (11) adopts politef, polyethylene, nylon or nylon elastomer.
5. quick exchange guiding catheter according to claim 4, it is characterized in that: described mesh grid is that the round braided wires (12) of 0.015-0.1mm and thickness are that 0.01-0.05mm, width are that flat braided wires (13) mixed weaving of 0.03-0.2mm forms by diameter, or mesh grid is that 0.01-0.05mm, width are that the flat braided wires braiding of 0.03-0.2mm forms by thickness.
6. quick exchange guiding catheter according to claim 4, it is characterized in that: described extension (4) near-end is connected with push rod (3), push rod (3) is comprised of the mandrel (15) of inside and the polymeric layer (14) that is coated on outside mandrel (15), polymeric layer (14) adopts the material identical with outer (9), forms one with outer (9) and is connected.
7. quick exchange guiding catheter according to claim 6 is characterized in that: described polymeric layer (14) is identical with the hardness of outer (9) near-end.
8. quick exchange guiding catheter according to claim 7, it is characterized in that: the mouth of pipe of described extension (4) near-end and push rod (3) junction is quick exchange hole (7), fast the axis of the normal on the plane that forms of the mouth of pipe of exchange hole (7) and extension (4) along distal direction in obtuse angle, the end tube wall of extension (4) near-end and the far-end of push rod (3) are connected smoothly; The radius of curvature in described push rod (3) cross section is identical with the radius of extension (4) pipe shaft.
9. quick exchange guiding catheter according to claim 8, it is characterized in that: the near-end of described push rod (3) is connected with catheter block (1), is equipped with heat-shrink tube (2) outside catheter block (1) and push rod (3) junction.
10. quick exchange guiding catheter according to claim 9, it is characterized in that: described push rod (3) is provided with the first Marking ring (5) apart from the distal portion 400mm place of catheter block (1), be separated by 100mm place is provided with the second Marking ring (6) at the first Marking ring (5) far-end, and the first Marking ring (5) and the second Marking ring (6) adopt platinum or iridium metals material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320161209.7U CN203263993U (en) | 2013-04-02 | 2013-04-02 | Fast switching guide catheter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320161209.7U CN203263993U (en) | 2013-04-02 | 2013-04-02 | Fast switching guide catheter |
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| Publication Number | Publication Date |
|---|---|
| CN203263993U true CN203263993U (en) | 2013-11-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320161209.7U Expired - Lifetime CN203263993U (en) | 2013-04-02 | 2013-04-02 | Fast switching guide catheter |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105342333A (en) * | 2015-12-06 | 2016-02-24 | 王本 | Grapefruit peeler |
| CN107096120A (en) * | 2017-06-01 | 2017-08-29 | 翎秀生物科技（上海）有限公司 | Coronary artery delivery conduit, conduit and device for heart intervention treating |
| CN108837277A (en) * | 2018-07-18 | 2018-11-20 | 董鹏 | Extend conduit |
| CN109310849A (en) * | 2016-08-10 | 2019-02-05 | 尼普洛株式会社 | Support conduit |
| CN109821133A (en) * | 2018-03-29 | 2019-05-31 | 苏州恒瑞迪生医疗科技有限公司 | A kind of microtubular |
| US10688277B2 (en) | 2015-09-23 | 2020-06-23 | Medtronic Vascular, Inc. | Guide extension catheter with perfusion openings |
| CN113350656A (en) * | 2016-02-24 | 2021-09-07 | 禾木（中国）生物工程有限公司 | Neurovascular catheter with enhanced flexibility |
| US11766539B2 (en) | 2019-03-29 | 2023-09-26 | Incept, Llc | Enhanced flexibility neurovascular catheter |
| US11819228B2 (en) | 2019-12-18 | 2023-11-21 | Imperative Care, Inc. | Methods and systems for treating a pulmonary embolism |
| US11850349B2 (en) | 2018-07-06 | 2023-12-26 | Incept, Llc | Vacuum transfer tool for extendable catheter |
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2013
- 2013-04-02 CN CN201320161209.7U patent/CN203263993U/en not_active Expired - Lifetime
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10688277B2 (en) | 2015-09-23 | 2020-06-23 | Medtronic Vascular, Inc. | Guide extension catheter with perfusion openings |
| CN105342333A (en) * | 2015-12-06 | 2016-02-24 | 王本 | Grapefruit peeler |
| CN113350656A (en) * | 2016-02-24 | 2021-09-07 | 禾木（中国）生物工程有限公司 | Neurovascular catheter with enhanced flexibility |
| CN113350658B (en) * | 2016-02-24 | 2024-03-29 | 禾木（中国）生物工程有限公司 | Nerve vascular catheter with enhanced flexibility |
| CN113350657A (en) * | 2016-02-24 | 2021-09-07 | 禾木（中国）生物工程有限公司 | Neurovascular catheter with enhanced flexibility |
| CN113350658A (en) * | 2016-02-24 | 2021-09-07 | 禾木（中国）生物工程有限公司 | Neurovascular catheter with enhanced flexibility |
| CN109310849A (en) * | 2016-08-10 | 2019-02-05 | 尼普洛株式会社 | Support conduit |
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| US11766539B2 (en) | 2019-03-29 | 2023-09-26 | Incept, Llc | Enhanced flexibility neurovascular catheter |
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