CN203989426U - Sacculus dilating catheter - Google Patents
Sacculus dilating catheter Download PDFInfo
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- CN203989426U CN203989426U CN201420433965.5U CN201420433965U CN203989426U CN 203989426 U CN203989426 U CN 203989426U CN 201420433965 U CN201420433965 U CN 201420433965U CN 203989426 U CN203989426 U CN 203989426U
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Abstract
This utility model provides a kind of sacculus dilating catheter, comprise: joint, antitorque portion, the first conduit, sacculus, the second conduit and most advanced and sophisticated conduit, antitorque portion has the dentalation of taper, the first end of the first conduit is connected with joint through after antitorque portion, the second end of the first conduit is connected with sacculus, one end of most advanced and sophisticated conduit is connected with sacculus, the second conduit is arranged in sacculus, and one end of the second conduit is positioned at most advanced and sophisticated conduit, the other end of the second conduit is connected with the second end of the first conduit, and the second conduit and most advanced and sophisticated conduit form seal wire and pass through chamber.Owing to having adopted the antitorque portion with dentalation, therefore there is stronger fracture resistance, thereby ensure that this utility model, in not frangibility of propelling movement process, has also ensured that the first conduit can not come off away from joint, has reduced operative failure risk simultaneously.
Description
Technical field
This utility model relates to medical instruments field, particularly a kind of sacculus dilating catheter.
Background technology
From first case in 1977, since the operation of endothelium tube chamber angiography of coronary arteries, intravascular Interventional Treatment method obtained development fast.Interventional therapy has handy and safe, micro-traumatic, advantage such as complication is few, accurate positioning, repeatability.The interventional therapy method of cardiovascular disease mainly contains balloon angioplasty and intravascular stent implantation at present.The optimal adaptation card of balloon angioplasty is that median size or trunk limit to, short section of isolatism is narrow, is secondly short section of Stricture and occlusion multiple, that disperse.Long section is narrow or inaccessible, small vessel disease becomes, ulcer narrow or Occlusion narrow or existing calcification is unwell to PTCA treatment. and intravascular stent refers on the basis being shaped at tube chamber balloon expandable, insert inner support in pathological changes section and support stenosis occlusion section blood vessel to reach, reduce blood vessel elasticity retraction and moulding again, keep the unobstructed object of tube chamber blood flow.Part inner support also has the effect of prevention of restenosis.With respect to surgical operation, risk is little, few intercurrent disease, and patient tolerability is strong, and internal medicine treatment is effective relatively.
In balloon angioplasty and intravascular stent implantation, commonly use rapid exchange configuration (RX structure) foley's tube at present.RX structural balloon conduit has following structure: have quick exchange mouth, be provided with inner tube before the quick exchange mouth from foley's tube far-end to distal catheter, form guiding wire tract, one man operation just can quick-replaceable conduit; Have sacculus, far-end outer tube, proximal catheter and the female Luer formation pressure chamber that is linked in sequence, for dilating sacculus, proximal catheter adopts metal tube conventionally, as rustless steel or Nitinol.Distal catheter and proximal catheter external diameter size are determining the trafficability characteristic of whole foley's tube intravasation and propelling movement property.
Foley's tube distal catheter and proximal catheter external diameter relatively large (as a sacculus dilating catheter used on market, its far-end and proximal outer diameter are 2.7Fr and 2.5Fr) in prior art, during by tiny lesion vessels, trafficability characteristic is relatively undesirable.Experimental results show that, suitably reduce foley's tube far-end and proximal catheter external diameter, the trafficability characteristic of foley's tube and propelling movement property can effectively be improved, and meanwhile there will be another problem: proximal catheter external diameter diminishes, with female Luer connecting portion easy fracture, and its torsional property variation.In prior art, normal sleeve type structure connection proximal catheter and the female Luer of adopting is with protection proximal catheter; proximal catheter external diameter diminishes; it is inadequate that sleeve type structure connects torsional property, needs to adopt the elastomeric material of torsional property excellence, thereby improved infrastructure cost and technological requirement herein.
Utility model content
This utility model provides a kind of sacculus dilating catheter, to solve the problem that is connected the inadequate easy fracture of transition portion torsion in prior art with female Luer.
For addressing the above problem, as an aspect of the present utility model, a kind of sacculus dilating catheter is provided, comprise: joint, antitorque portion, the first conduit, sacculus, the second conduit and most advanced and sophisticated conduit, antitorque portion has the dentalation of taper, the first end of the first conduit is connected with joint through after antitorque portion, the second end of the first conduit is connected with sacculus, one end of most advanced and sophisticated conduit is connected with sacculus, the second conduit is arranged in sacculus, and one end of the second conduit is positioned at most advanced and sophisticated conduit, the other end of the second conduit is connected with the second end of the first conduit, the second conduit and most advanced and sophisticated conduit form seal wire and pass through chamber.
Further, antitorque portion is divided into multiple annulus to form dentalation along the bearing of trend of the first conduit by multiple circumferential recess.
Further, the cross section of annulus is tetragon or circular arc.
Further, the first end of the first conduit is provided with engagement groove, and dentalation and engagement groove complement each other to form embossed card buckle structure.
Further, the diameter of most advanced and sophisticated conduit is less than the diameter of the first conduit, and most advanced and sophisticated conduit has tapering.
Further, antitorque portion is made up of nylon.
Further, between antitorque portion and the first conduit, link into an integrated entity by the mode of injection moulding.
Further, the first conduit comprises proximal catheter and distal catheter, and one end of proximal catheter is connected with joint, and one end of distal catheter is connected with sacculus, the other end of proximal catheter and the welding of the other end of distal catheter.
Further, the external diameter of distal catheter is 0.8-0.85mm, and the external diameter of proximal catheter is 0.6-0.65mm.
Further, one end of the second conduit and the welding of most advanced and sophisticated conduit, the side mouth welding of the other end of the second conduit and distal catheter.
Owing to having adopted the antitorque portion with dentalation, therefore there is stronger fracture resistance, thereby ensure that this utility model, in not frangibility of propelling movement process, has also ensured that the first conduit can not come off away from joint, has reduced operative failure risk simultaneously.
Brief description of the drawings
Fig. 1 schematically shows structural representation of the present utility model;
Fig. 2 schematically shows the structural representation of antitorque portion of the prior art;
Fig. 3 schematically shows the structural representation of the antitorque portion in first embodiment;
Fig. 4 schematically shows the structural representation of second antitorque portion in embodiment;
Fig. 5 schematically shows the mounting structure schematic diagram of antitorque portion and joint.
Reference numeral in figure: 1, joint; 2, antitorque portion; 3, the first conduit; 4, sacculus; 5, the second conduit; 6, most advanced and sophisticated conduit; 7, circumferential recess; 8, annulus; 9, developing ring; 10, hands handle; 11, proximal catheter; 12, distal catheter.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiment of the present utility model is elaborated, but the multitude of different ways that this utility model can be defined by the claims and cover is implemented.
Please refer to Fig. 1 to Fig. 5, this utility model provides a kind of sacculus dilating catheter, it can be used as quick exchange foley's tube in percutaneous transluminal angio plasty and percutaneous transluminal coronary angioplasty, comprise: joint 1, antitorque portion 2, the first conduit 3, sacculus 4, the second conduit 5 and most advanced and sophisticated conduit 6, antitorque portion 2 has the dentalation of taper, the first end of the first conduit 3 is connected with joint 1 through antitorque portion 2 is rear, the second end of the first conduit 3 is connected with sacculus 4, one end of most advanced and sophisticated conduit 6 is connected with sacculus 4, the second conduit 5 is arranged in sacculus 4, and one end of the second conduit 5 is positioned at most advanced and sophisticated conduit 6, the other end of the second conduit 5 is connected with the second end of the first conduit 3, the second conduit 5 and most advanced and sophisticated conduit 6 form seal wire and pass through chamber.Preferably, antitorque portion 2 is made up of nylon.Preferably, joint is female Luer.Preferably, be also provided with handle 10 in one end of joint 1.
Preferably, the cross section of annulus 8 is tetragon (please refer to Fig. 3) or circular arc (please refer to Fig. 4).The activity that the seal wire that the second conduit 5 and most advanced and sophisticated conduit 6 form is guiding wire by chamber provides space.Further, the inner chamber mineralization pressure chamber of joint 1, the first conduit 3 and sacculus 4 UNICOMs, is delivered to the inside of sacculus 4 with the pressure that outside decompressor is provided, sacculus 4 is expanded.
Preferably, the second conduit 5 and most advanced and sophisticated conduit 6 are tubulose, can adopt medical grade nylon or nylon elastomer to be made.Preferably, sacculus 4 middle parts are shaped as cylindric, can adopt nylon or nylon elastomer, can pass through the conditions such as High Temperature High Pressure is cooling by mould and be made.Preferably, antitorque portion 2 adopts transparent thermoplastic macromolecular material to make, as nylon or nylon elastomer.
Preferably, the first conduit 3 comprises proximal catheter 11 and distal catheter 12, and one end of proximal catheter 11 is connected with joint 1, and one end of distal catheter 12 is connected with sacculus 4, the other end welding of the other end of proximal catheter 11 and distal catheter 12.Like this, proximal catheter 11 and distal catheter 12 can be made up of two kinds of different materials respectively, so that on the basis with certain rigidity, also have certain flexibility simultaneously, thus convenient insertion.For example, preferably, proximal catheter is tubulose, and material mainly adopts rustless steel or Ultimum Ti.Preferably, distal catheter is double channel catheter, is mainly made up of nylon.
Preferably, one end of the second conduit 5 and most advanced and sophisticated conduit 6 weld, the side mouth welding of the other end of the second conduit 5 and distal catheter 12.
Preferably, the external diameter of distal catheter 12 is 0.8-0.85mm, and the external diameter of proximal catheter 11 is 0.6-0.65mm, so that this utility model having good trafficability characteristic by blood vessel or transfer gantry to tiny pathological process.
Owing to having adopted the antitorque portion 2 with dentalation, therefore there is stronger fracture resistance, thereby ensure that this utility model, in not frangibility of propelling movement process, has also ensured that the first conduit 3 can not come off away from joint 1, has reduced operative failure risk simultaneously.
In this tooth-shape structure and prior art, between commercial Application wire and plug, syndeton difference is following several respects:
(1) between wire of the prior art and plug, syndeton generally adopts PVC or PE material, but, this novel employing transparent thermoplastic macromolecular material (as nylon elastomer), by contrast, thermoplastic macromolecule material chemical stability and withstand voltage properties that this utility model uses are stronger, there is good processability, and biocompatibility and wearability all fine, therefore from material application, further ensured the excellent torsion fracture resistant performance of tooth-shape structure.
(2) tooth-shape structure in this utility model has stronger stretching resistance performance than syndeton between wire of the prior art and plug.Preferably, the first end of the first conduit 3 is provided with engagement groove, and dentalation and engagement groove complement each other to form embossed card buckle structure.For example, before antitorque structure injection moulding, can first the first conduit be pressed into fine recesses to form above-mentioned engagement groove, again the first conduit is snapped in injection mold, thereby, have the advantages that firmness is strong, not only can strengthen the torsional property of the first conduit and joint junction, meanwhile, also reduced the risk that the first conduit pulls away from joint.
(3) with in prior art shown in Fig. 2 compared with sleeve type structure, the antitorque protection stabilized structure of this tooth-shape structure in this utility model is good, and technique is simple, and cost is lower.
In prior art, proximal catheter and female Luer connected mode generally adopt a glue bond, connect technological requirement higher.For this reason, in this utility model, preferably, between antitorque portion 2 and the first conduit 3, link into an integrated entity by the mode of injection moulding.Like this, in production process, together with the spill place of antitorque portion 2 is closely stamped in the first conduit, joint and tooth-shape structure become one, finally adopt again Shooting Technique, the handle of joint is injected on tooth-shape structure, complete being connected of proximal catheter and blank area, its technique is simple, cost is lower, and ordinary casing formula structure, practical relatively, cost performance is high, solves the problem of the inadequate easy fracture of foley's tube female Luer connection transition portion torsion in prior art.
Preferably, antitorque portion 2 is divided into multiple annulus 8 to form dentalation along the bearing of trend of the first conduit 3 by multiple circumferential recess 7.
Preferably, the diameter of most advanced and sophisticated conduit 6 is less than the diameter of the first conduit 3, and most advanced and sophisticated conduit 6 has tapering.Most advanced and sophisticated conduit 6 can be connected with the second conduit by butt welding, and its hardness ratio second conduit is little, can fit with guiding wire better, more easily passes through bending pathological changes.
Preferably, sacculus dilating catheter also comprises: on developing ring 9, the second conduits 5, be arranged with at least one developing ring 9.Preferably, developing ring 9 labellings are circular, platinumiridio, gold or tungsten gold etc. that employing can be developed under X-ray, and quantity is 1-2, it is mainly used under X-ray, indicating the position of sacculus in operation process.
Preferably, for guaranteeing the sealing effectiveness of the connecting portion between each conduit, each connecting portion can adopt heat seal bonding, the flap of sacculus also carries out under certain temperature and process conditions, make the folding memory performance of sacculus good, after dilation repeatedly, still can maintain original folding dress lobe number, there is good memory performance.
When use, under Perspective Conditions, make conduit arrive diseased region along seal wire, the pressure that is then connected decompressor and provided by outside is delivered to sacculus inside, thereby makes balloon expandable.
The foregoing is only preferred embodiment of the present utility model, be not limited to this utility model, for a person skilled in the art, this utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (10)
1. a sacculus dilating catheter, it is characterized in that, comprise: joint (1), antitorque portion (2), the first conduit (3), sacculus (4), the second conduit (5) and most advanced and sophisticated conduit (6), described antitorque portion (2) has the dentalation of taper, the first end of described the first conduit (3) is connected with described joint (1) through after described antitorque portion (2), the second end of described the first conduit (3) is connected with described sacculus (4), one end of described most advanced and sophisticated conduit (6) is connected with described sacculus (4), described the second conduit (5) is arranged in described sacculus (4), and one end of described the second conduit (5) is positioned at described most advanced and sophisticated conduit (6), the other end of described the second conduit (5) is connected with the second end of described the first conduit (3), described the second conduit (5) and described most advanced and sophisticated conduit (6) form seal wire and pass through chamber.
2. sacculus dilating catheter according to claim 1, it is characterized in that, described antitorque portion (2) is divided into multiple annulus (8) to form described dentalation along the bearing of trend of described the first conduit (3) by multiple circumferential recess (7).
3. sacculus dilating catheter according to claim 2, is characterized in that, the cross section of described annulus (8) is tetragon or circular arc.
4. sacculus dilating catheter according to claim 1, is characterized in that, the first end of described the first conduit (3) is provided with engagement groove, and described dentalation and described engagement groove complement each other to form embossed card buckle structure.
5. sacculus dilating catheter according to claim 1, is characterized in that, the diameter of described most advanced and sophisticated conduit (6) is less than the diameter of described the first conduit (3), and described most advanced and sophisticated conduit (6) has tapering.
6. sacculus dilating catheter according to claim 1, is characterized in that, described antitorque portion (2) is made up of nylon.
7. sacculus dilating catheter according to claim 1, is characterized in that, between described antitorque portion (2) and described the first conduit (3), links into an integrated entity by the mode of injection moulding.
8. sacculus dilating catheter according to claim 1, it is characterized in that, described the first conduit (3) comprises proximal catheter (11) and distal catheter (12), one end of described proximal catheter (11) is connected with described joint (1), one end of described distal catheter (12) is connected with described sacculus (4), the other end welding of the other end of described proximal catheter (11) and described distal catheter (12).
9. sacculus dilating catheter according to claim 8, is characterized in that, the external diameter of described distal catheter (12) is 0.8-0.85mm, and the external diameter of described proximal catheter (11) is 0.6-0.65mm.
10. sacculus dilating catheter according to claim 8, it is characterized in that, one end of described the second conduit (5) and described most advanced and sophisticated conduit (6) welding, the side mouth welding of the other end of described the second conduit (5) and described distal catheter (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420433965.5U CN203989426U (en) | 2014-08-01 | 2014-08-01 | Sacculus dilating catheter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420433965.5U CN203989426U (en) | 2014-08-01 | 2014-08-01 | Sacculus dilating catheter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203989426U true CN203989426U (en) | 2014-12-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420433965.5U Active CN203989426U (en) | 2014-08-01 | 2014-08-01 | Sacculus dilating catheter |
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| Country | Link |
|---|---|
| CN (1) | CN203989426U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107669382A (en) * | 2017-11-08 | 2018-02-09 | 王子亮 | Foley's tube conveying device is used in a kind of entocranial artery shaping |
| CN110693635A (en) * | 2018-07-09 | 2020-01-17 | 先健科技(深圳)有限公司 | Lumen stent conveyor |
-
2014
- 2014-08-01 CN CN201420433965.5U patent/CN203989426U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107669382A (en) * | 2017-11-08 | 2018-02-09 | 王子亮 | Foley's tube conveying device is used in a kind of entocranial artery shaping |
| CN110693635A (en) * | 2018-07-09 | 2020-01-17 | 先健科技(深圳)有限公司 | Lumen stent conveyor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |