CN203235117U - Primary and secondary guiding catheter - Google Patents
Primary and secondary guiding catheter Download PDFInfo
- Publication number
- CN203235117U CN203235117U CN 201320161202 CN201320161202U CN203235117U CN 203235117 U CN203235117 U CN 203235117U CN 201320161202 CN201320161202 CN 201320161202 CN 201320161202 U CN201320161202 U CN 201320161202U CN 203235117 U CN203235117 U CN 203235117U
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- conduit
- catheter
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- sub
- guiding catheter
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Abstract
The utility model discloses a primary and secondary guiding catheter, which aims to improve the fracture resistance of the guiding catheter, effectively transferring twisting force and reducing damage to blood vessels. The primary and secondary guiding catheter disclosed by the utility model is characterized in that a primary catheter is internally provided with a secondary catheter, the far end of the secondary catheter extends out of the far end of the primary catheter, the hardness of the primary catheter and the hardness of the secondary catheter are gradually reduced from a near end to the far end, a catheter body at the far end of the secondary catheter is coated with a hydrophilic coating, and the end surface of the far end at the end part of the hydrophilic coating is vertical to the axis of the secondary catheter. Compared with the prior art, the primary and secondary guiding catheter has the beneficial effects that the secondary catheter with the catheter body at the far end being coated with the hydrophilic coating is sleeved with the primary catheter, so that the supporting force of the whole guiding catheter system is enhanced; and since each of the secondary catheter and the primary catheter adopts a catheter system which is in a three-layer structure and of which the hardness is gradually reduced from the near end to the far end, not only are the flexibility and the softness of the far end of the secondary catheter ensured, and is the damage to the blood vessels reduced, but also the fracture resistance of the primary and secondary guiding catheter and the effective transfer of the twisting force are ensured, so that 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 system of percutaneous coronary intervention (pci) use.
Background technology
At present, guiding catheter is the basic and crucial of PCI success as the basic passage of percutaneous coronary intervention (pci) PCI, and the support force of guiding catheter has particularly important effect to finishing PCI.In recent years because the Transradial percutaneous coronary intervention wound is little, complication rate is lower, and the reason that patient's postoperative life quality is higher is so that the method more and more obtains attention in Coronary Artery Disease Intervention Treatment, popularized widely, but many doctors find that in operation process the simple support force that provides by guiding catheter self usually is not enough to finish whole operation in patients underwent intervention therapy via radial artery, the complicated coronary artery PCI of other such as coronary chronic total occlusion CTO pathological changes, serious tortuous pathological changes, fill the air calcification, the Chronic total occlusions such as anomalous origin of coronary arteries also need guiding catheter that stronger support force is provided.And improve the guiding catheter support force several different methods is arranged, wherein the primary and secondary conduit is because can extensively being approved with the Active support power that improves whole conduit system by controlling conduit, it is inadequate because of the guiding catheter recoil that the primary and secondary conduit has generally passed through pathological changes at seal wire, uses in the situation that sacculus, support can not put in place.
A Heartrail II " Fr5 is socketed in the conduit system among the Fr6 " of Japan Terumo company, be the primary and secondary guiding catheter that the sub-guiding catheter of 5F and female guiding catheter that specification is 6F consist of by specification, can satisfy needs the dark needs of inserting guiding catheter, increasing support force in most interventional therapys.Although this primary and secondary guiding catheter structure is the straight peen guiding catheter, head end is soft, if if operation is careless slightly in the operation, blood vessel is damaged or air embolism, even causes vascular occlusion.
Summary of the invention
The purpose of this utility model provides a kind of primary and secondary guiding catheter, and the technical problem that solve is to improve the fold resistance of guiding catheter, effective communication torsion, and make far-end flexible and soft, reduce the damage to blood vessel.
This utility model is by the following technical solutions: a kind of primary and secondary guiding catheter, comprise female conduit, be provided with sub-conduit in described female conduit, the far-end of sub-conduit stretches out the far-end of female conduit, female conduit and sub-conduit hardness are reduced successively by near-end to far-end, the far-end pipe shaft of sub-conduit is coated with hydrophilic coating, and the far-end end face of its end is vertical with the axis of sub-conduit.
Hydrophilic coating of the present utility model 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; Described skin-material adopts macromolecular material or natural macromolecular material and derivant thereof; Described natural macromolecular material and derivant thereof are chitin, chitosan or agarose; Described skin depth is 0.0001-0.025mm, and underlayer thickness is 0.0001-0.025mm.
Hydrophilic coating of the present utility model is apart from sub-catheter proximal end end 300-1000mm.
The conduit pipe shaft of sub-conduit of the present utility model and female conduit is connected to form by the pipe shaft that near-end to far-end reduces successively by five to ten two-stage nitration hardness.
Sub-conduit of the present utility model and female conduit are comprised of skin, intermediate layer and internal layer three-decker.
Skin of the present utility model is connected to form by the pipe shaft that five to ten two-stage nitration hardness reduce successively by near-end to far-end, the length of every section pipe shaft is 1-900mm, pipe thickness is 0.03-0.2mm, adopts nylon, polyurethane, polyetheramides resin, epoxy resin, polyetheramine or polyamide.
Intermediate layer of the present utility model is mesh grid, and pixel/inch is 20-150, and count is improved gradually by far-end to near-end; Described mesh grid is by round litzendraht wire and the thickness 0.01-0.05mm of diameter 0.015-0.1mm, and the flat litzendraht wire mixed weaving of width 0.03-0.2mm consists of; Or described mesh grid is made of the flat braid of thickness 0.01-0.05mm, width 0.03-0.2mm.
The model of female conduit of the present utility model and sub-conduit is 5F and 4F, 6F and 5F, 7F and 6F, or 8F and 7F.
The total length of female conduit of the present utility model is 1000mm, and sub-conduit is than the long 100-500mm of female conduit.
This utility model compared with prior art, the far-end pipe shaft is scribbled the sub-conduit of hydrophilic coating and female conduit that distal portions is the arbitrary standards shape is nested with, to strengthen the support force of whole guiding catheter system, sub-conduit and female conduit all adopt three-decker, the mesh grid that count is diminished from near-end to far-end and cooperate from the pipe shaft that near-end to far-end hardness reduces successively, obtain the conduit system that reduces one by one to far-end hardness from near-end, guaranteed that not only sub-distal end of catheter is flexible and soft, minimizing is to the damage of blood vessel, also guarantee the fold resistance of primary and secondary conduit and the effective communication of torsion, improved the success rate of operation.
Description of drawings
Fig. 1 is the structural representation of this utility model primary and secondary guiding catheter.
Fig. 2 is the structural representation of the sub-conduit of this utility model.
Fig. 3 is the enlarged drawing at A place among Fig. 1.
Fig. 4 is vertical partial sectional view of the sub-conduit of this utility model.
Fig. 5 is the transverse sectional view of this utility model primary and secondary guiding catheter.
Fig. 6 is the transverse sectional view of the first form of presentation in intermediate layer of the present utility model.
Fig. 7 is the transverse sectional view of the second preparation method in intermediate layer of the present utility model.
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 figures 1 and 3, primary and secondary guiding catheter of the present utility model is comprised of female conduit and the sub-conduit that is arranged in female conduit, and the distal portion of sub-conduit is inserted from the close end of female conduit, stretches out from the distal portion of female conduit through female conduit.Sub-conduit and female conduit were respectively separate state before using, female conduit can independently use in operation process, also can use with sub-conduit socket, to strengthen the support force of whole conduit system.
Female conduit is provided with catheter block 1, proximal catheter 3 and the distal catheter 4 that is connected successively from near-end to far-end.Proximal catheter 3 and distal catheter 4 consist of female conduit pipe shaft, and female catheter tube connects to form from near-end to far-end by the pipe shaft that five to ten two-stage nitration hardness reduce successively, and the length of every section pipe shaft is 1-900mm.Be equipped with heat-shrink tube 2 outside catheter block 1 and proximal catheter 3 junctions.
Sub-conduit is structurally similar to female conduit, is provided with successively the sub-catheter block 11, sub-proximal catheter 13 and the sub-distal catheter 14 that are connected from near-end to far-end.Sub-proximal catheter 13 and sub-distal catheter 14 consist of sub-conduit pipe shaft, and sub-catheter tube connects to form from near-end to far-end by the pipe shaft that five to ten two-stage nitration hardness reduce successively, and the length of every section pipe shaft is 1-900mm.Be equipped with sub-heat-shrink tube 12 outside sub-catheter block 11 and sub-proximal catheter 13 junctions.
The specification of sub-conduit is 4F, 5F, 6F or 7F, and the specification of female conduit is greater than specification of sub-conduit, is 5F, 6F, 7F or 8F.Distal catheter 4 is the arbitrary standards shape in free state, such as linearity, arc shaped or bending.The total length of female conduit is 1000mm, and sub-conduit is than the long 100-500mm of female conduit.
As shown in Figure 2, the far-end end face of sub-distal catheter 14 and the axis of sub-distal catheter 14 vertical (straight peen) are coated with hydrophilic coating 25 at sub-distal catheter 14 pipe shafts apart from sub-catheter block 11 proximal end 300-1000mm.Hydrophilic coating 25 adopts 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, in dinethylformamide, oxolane, ethyl acetate, butyl acetate, butanone, dehydrated alcohol, isopropyl alcohol, acetone, chloroform and the toluene more than one, 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.Skin depth is 0.0001-0.025mm after dry, and underlayer thickness is 0.0001-0.025mm.
As shown in Figure 4, sub-proximal catheter 13 and sub-distal catheter 14 are comprised of sub-catheter outer 15, sub-conduit intermediate layer 16 and sub-conduit internal layer 17 three-deckers, wherein:
Sub-catheter outer 15 connects to form from near-end to far-end by the pipe shaft that five to ten two-stage nitration hardness leveles reduce successively, the length of every section pipe shaft is 1-900mm, pipe thickness is 0.03-0.2mm, adopts nylon, polyurethane, polyetheramides resin, epoxy resin, polyetheramine or polyamide material to make.
Mesh grid is adopted in sub-conduit intermediate layer 16, and pixel/inch PPI is 20-150, and count is improved gradually by far-end to near-end.
Composite was made more than sub-conduit internal layer 17 adopted one or both kinds in coefficient of frictions less politef, polyethylene, nylon and the nylon elastomer.
As shown in Figure 5, proximal catheter 3 and distal catheter 4 female catheter outers 5, female conduit intermediate layer 6 and female conduit internal layer 7 three-deckers form.
Female catheter outer 5 connects to form from near-end to far-end by the pipe shaft that five to ten two-stage nitration hardness leveles reduce successively, the length of every section pipe shaft is 1-900mm, pipe thickness is 0.03-0.2mm, adopts nylon, polyurethane, polyetheramides resin, epoxy resin, polyetheramine or polyamide material to make.
Female conduit intermediate layer 6 is mesh grid, and pixel/inch PPI is 20-150, and count is improved gradually by far-end to near-end.
Female conduit internal layer 7 adopts one or more composites in coefficient of friction less politef, polyethylene, nylon and the nylon elastomer to make.
As shown in Figure 6, mesh grid is by the round litzendraht wire 8 and thickness 0.01-0.05mm of diameter 0.015-0.1mm, and flat litzendraht wire 9 mixed weavings of width 0.03-0.2mm consist of.
As shown in Figure 7, mesh grid is made of flat litzendraht wire 9 braidings of thickness 0.01-0.05mm, width 0.03-0.2mm.
Primary and secondary guiding catheter of the present utility model, distal portions is scribbled sub-conduit and the bigger specification of hydrophilic coating, distal portions is that female conduit of arbitrary standards shape is nested with, to strengthen the support force of whole guiding catheter system, sub-conduit and female conduit all adopt three-decker, the mesh grid that count is diminished from near-end to far-end and cooperate from the pipe shaft that near-end to far-end hardness reduces successively, obtain the conduit system that reduces one by one to far-end hardness from near-end, guaranteed that not only sub-distal end of catheter is flexible and soft, minimizing is to the damage of blood vessel, also guaranteed the fold resistance of primary and secondary conduit and the effective communication of torsion, made operation process more smooth.When solving complicated coronary lesion and patients underwent intervention therapy via radial artery, have following characteristics:
(1) for the chronic coronary artery pathological changes operation of complexity provides the dark apparatus of inserting, can greatly improve the rear support force of whole conduit system, operation process is finished smoothly.
(2) hydrophilic coating of the straight peen of sub-distal end of catheter and far-end makes conduit easily coaxial with the arteria coronaria mouth, can also reduce distal end of catheter to the damage of arteria coronaria mouth, has greatly improved success rate of operation.
(3) conduit system that reduces one by one to distal end of catheter hardness from the conduit near-end that the mesh grid that becomes the PPI structure and the pipe shaft of different hardness are arranged in pairs or groups and be formed by connecting, guaranteed that not only sub-conduit head end is very flexible and soft, minimizing is to the damage of blood vessel, also guaranteed fold resistance and the torsion effective communication of primary and secondary conduit system, made operation process more smooth.
Claims (9)
1. primary and secondary guiding catheter, comprise female conduit, it is characterized in that: be provided with sub-conduit in described female conduit, the far-end of sub-conduit stretches out the far-end of female conduit, female conduit and sub-conduit hardness are reduced successively by near-end to far-end, the far-end pipe shaft of sub-conduit is coated with hydrophilic coating (25), and the far-end end face of its end is vertical with the axis of sub-conduit.
2. primary and secondary guiding catheter according to claim 1 is characterized in that: described hydrophilic coating (25) 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; Described skin-material adopts macromolecular material or natural macromolecular material and derivant thereof; Described natural macromolecular material and derivant thereof are chitin, chitosan or agarose; Described skin depth is 0.0001-0.025mm, and underlayer thickness is 0.0001-0.025mm.
3. primary and secondary guiding catheter according to claim 2 is characterized in that: the sub-catheter proximal end of described hydrophilic coating (25) distance end 300-1000mm.
4. primary and secondary guiding catheter according to claim 1, it is characterized in that: the conduit pipe shaft of described sub-conduit and female conduit is connected to form by the pipe shaft that near-end to far-end reduces successively by five to ten two-stage nitration hardness.
5. primary and secondary guiding catheter according to claim 5 is characterized in that: described sub-conduit and female conduit are comprised of outer, intermediate layer and internal layer three-decker.
6. primary and secondary guiding catheter according to claim 6, it is characterized in that: described skin is connected to form by the pipe shaft that five to ten two-stage nitration hardness reduce successively by near-end to far-end, the length of every section pipe shaft is 1-900mm, pipe thickness is 0.03-0.2mm, adopts nylon, polyurethane, polyetheramides resin, epoxy resin, polyetheramine or polyamide.
7. primary and secondary guiding catheter according to claim 6, it is characterized in that: described intermediate layer is mesh grid, and pixel/inch is 20-150, and count is improved gradually by far-end to near-end; Described mesh grid is by the round litzendraht wire (8) and thickness 0.01-0.05mm of diameter 0.015-0.1mm, and flat litzendraht wire (9) mixed weaving of width 0.03-0.2mm consists of; Or described mesh grid is by flat litzendraht wire (9) the braiding formation of thickness 0.01-0.05mm, width 0.03-0.2mm.
8. primary and secondary guiding catheter according to claim 1, it is characterized in that: the model of described female conduit and sub-conduit is 5F and 4F, 6F and 5F, 7F and 6F, or 8F and 7F.
9. primary and secondary guiding catheter according to claim 1, it is characterized in that: the total length of described female conduit is 1000mm, sub-conduit is than the long 100-500mm of female conduit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320161202 CN203235117U (en) | 2013-04-02 | 2013-04-02 | Primary and secondary guiding catheter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320161202 CN203235117U (en) | 2013-04-02 | 2013-04-02 | Primary and secondary guiding catheter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203235117U true CN203235117U (en) | 2013-10-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320161202 Expired - Lifetime CN203235117U (en) | 2013-04-02 | 2013-04-02 | Primary and secondary guiding catheter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203235117U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108158654A (en) * | 2018-01-12 | 2018-06-15 | 郑州大学第附属医院 | A kind of Portable magnetic sensing locating guide device and its method |
| 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 |
| CN113365685A (en) * | 2019-02-06 | 2021-09-07 | 株式会社钟化 | Extension catheter and method of manufacturing the same |
-
2013
- 2013-04-02 CN CN 201320161202 patent/CN203235117U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108158654A (en) * | 2018-01-12 | 2018-06-15 | 郑州大学第附属医院 | A kind of Portable magnetic sensing locating guide device and its method |
| 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 |
| CN113365685A (en) * | 2019-02-06 | 2021-09-07 | 株式会社钟化 | Extension catheter and method of manufacturing the same |
| CN113365685B (en) * | 2019-02-06 | 2023-07-21 | 株式会社钟化 | Extension catheter and method of manufacturing the same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131016 |
|
| CX01 | Expiry of patent term |