CN204951905U - Angiogram superslide seal wire - Google Patents
Angiogram superslide seal wire Download PDFInfo
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- CN204951905U CN204951905U CN201520406299.0U CN201520406299U CN204951905U CN 204951905 U CN204951905 U CN 204951905U CN 201520406299 U CN201520406299 U CN 201520406299U CN 204951905 U CN204951905 U CN 204951905U
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Abstract
The utility model discloses an angiogram superslide seal wire, including ni -Ti memory alloy core silk, medical macromolecular materials parcel layer and hydrophilic coating, the length of core silk tip is 60 -120mm, and wherein, soft head of district's degree is 30 -50mm, and the length in super soft district is 6 -12mm, the extreme point calculated as the starting point before length was and uses the core silk, remove super soft foreign, core silk tip external diameter becomes continuous tapering and reduces gradually, and the transition point that becomes soft district by non - soft district is soft gradual change point, the external diameter of soft gradual change point is 0.18 -0.22mm, the external diameter in super soft district is 0.08 -0.12mm. The utility model discloses angiogram superslide seal wire can help the operator to obtain good tactile feedback, has avoided angiogram operation in -process vascular perforation phenomenon to appear, is suitable for popularization and application.
Description
Technical field
This utility model relates to a kind of medical intervention class seal wire, specifically, relates to one and is applied to the operation of clinical vascular radiography, realize the guiding of angiography catheter at Endovascular and the seal wire of positioning action.
Background technology
After nineteen fifty-three Seldinger uses percutaneous puncture femoral arteriography visualization first, because it is easy and simple to handle, few intercurrent disease, patient's misery are little, success rate advantages of higher, angiography is obtained approve widely and apply, along with the continuous improvement of Seldinger puncture technique and the tremendous development of Vascular interventional devices, current endovascular temporary embolization has become the main path of a kind of important diagnostic method and intervention radiology.
In blood vessel intervention diagnosis and therapeutic process, radiography seal wire arrives the important medical apparatus and instruments of target site as all kinds of conduit of guiding and intervention apparatus.Because seal wire needs repeatedly to push at Ink vessel transfusing, through complex lesions and curved blood vessel, therefore requires radiography seal wire will have good propelling movement, turns round control property and compliance, also should keep the fastness of splendid lubricity, water-retaining property and seal wire face coat simultaneously.
The most frequently used angiographic guidewire of current doctor has stainless steel silk to be wound around radiography seal wire and superslide seal wire.Stainless steel silk is wound around radiography seal wire and adopts helical spring to be wound around stainless steel core silk, outside scribbles hydrophilic coating, because hydrophilic coating is directly applied to wrapping wire surface, repeatedly to push and by blood vessel complex lesions situation at seal wire, hydrophilic coating easily comes off, seal wire lubricity is reduced, increases seal wire and blood vessel wall frictional force, cause angiospastic incidence rate to rise; In addition, because stainless steel silk is wound around radiography seal wire tip without gradual change scaled version, and seal wire head end diameter is unchanged, head end diameter is larger, cause seal wire head end hardness larger, reduce seal wire compliance and by property, not only increase the frictional force of seal wire and blood vessel wall, also reduce the percent of pass of the larger blood vessel of flexibility and blood vessel complex lesions simultaneously.Therefore in operation process, doctor has to select superslide seal wire sometimes, and superslide seal wire common is in the market primarily of compositions such as super elastic marmen silk (mainly Ni-Ti memorial alloy core silk), medical macromolecular materials integument and hydrophilic coatings.But reality is when blood vessel intervention diagnosis and treatment, but find that it exists the defect easily causing vascular puncture.
In sum, also there is larger room for improvement in design in main in the market angiographic guidewire.
Utility model content
The technical problem that will solve of the present utility model is to provide a kind of angiography superslide seal wire can avoiding vascular puncture.
For solving the problems of the technologies described above, first need to find out the reason causing vascular puncture, existing angiography superslide guidewire core wire tip diameter after grinding is comparatively very thin, its compliance should be better in theory, not easily should cause vascular puncture, find afterwards after deliberation, exactly because easily cause the core silk tip of the reason seal wire of vascular puncture comparatively very thin, like this, when actual vessel intervention diagnosis and treatment, operator's feel can be made not good enough, cause the loss of tactile feedback, thus easily cause vascular puncture.
After the above-mentioned reason of discovery, this utility model have employed following technical scheme and solves above-mentioned technical problem:
A kind of angiography superslide seal wire, comprise Ni-Ti memorial alloy core silk, medical macromolecular materials integument and hydrophilic coating, the length of described core silk tip is 60-120mm, wherein, soft section length is 30-50mm, the length in super soft district is 6-12mm, and described length is with core silk forward terminal as starting point calculates; Except described super soft district, described core silk tip external diameter becomes continuous tapering to reduce gradually, the transition point being become soft district by non-soft district is soft gradual change point, and the external diameter of described soft gradual change point is 0.18-0.22mm, and the external diameter in described super soft district is 0.08-0.12mm.
Further, the external diameter of described soft gradual change point is 0.2mm.
Further, the external diameter in described super soft district is 0.1mm.
Further, the length in described super soft district is 10mm.
Further, except described core silk tip, core silk external diameter is 0.42-0.54mm.
Further, the length of described core silk tip is 100mm.
Further, described integument adopts polyurethane material.
Further, described hydrophilic coating is polyvinylpyrrolidone (PVP).
Compared with radiography seal wire technology in the market, this utility model solves in angiography operation process, seal wire coating is insecure, head end diameter is excessive, push that resistance is comparatively large, flexibility comparatively trunk or complex lesions blood vessel percent of pass low, easily cause the problems such as vasospasm.Concrete technique effect is as follows:
(1) core silk tip external diameter becomes continuous tapering to reduce, and reduces tip hardness, increases tip compliance, improves the ability of seal wire or complex lesions blood vessel comparatively large by flexibility;
(2) soft section length, soft gradual change point external diameter, the length in super soft district and external diameter thereof is designed, by above-mentioned matching design, operator can be helped to obtain good tactile feedback, avoid in angiography operation process and occur vascular puncture phenomenon, simultaneously, by arranging the length of core silk tip, can ensure that the external diameter of soft gradual change point when arriving soft district meets relevant design requirement
(3) adopt special hydrophilic coating, add water-retaining property and the lubricity of seal wire.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is the Longitudinal cross section schematic of angiography superslide seal wire of the present utility model;
Fig. 2 is the core silk tip structural representation of angiography superslide seal wire of the present utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described, should be appreciated that preferred embodiment described herein is only for instruction and explanation of this utility model, and be not used in restriction this utility model.
As shown in Figure 1, angiography superslide seal wire of the present utility model comprises Ni-Ti memorial alloy core silk 1, medical macromolecular materials integument 2 and hydrophilic coating 3.
Ni-Ti memorial alloy core silk 1 is positioned at the internal layer of seal wire, for seal wire entirety provides support power.Coordinate shown in Fig. 2, the length L of core silk tip
1for 60-120mm, optimum is 100mm, wherein, and soft district L
2length is 30-50mm, super soft district L
3length be 6-12mm, optimum is 10mm, and above-mentioned length is with core silk forward terminal for starting point calculates, wherein:
Except super soft district, core silk tip external diameter becomes continuous tapering to reduce gradually, and the transition point being become soft district by non-soft district is soft gradual change point, the outside diameter d of soft gradual change point
2for 0.18-0.22mm, optimum is 0.2mm, the outside diameter d in super soft district
3for 0.08-0.12mm, optimum is 0.1mm.
Except described core silk tip, core silk outside diameter d
1for 0.42-0.54mm.
During preparation, finely tune centerless lapping machine in advance, intercept appropriate length Ni-Ti memorial alloy core silk, in the centerless lapping machine regulated, grind core silk tip, accurately confirm core silk tip external diameter and tapering length by scale and slide calliper rule.
Medical macromolecular materials integument 2 is positioned at outside core silk, adopt polyurethane material, during preparation, intercept the thermal contraction casing tube of the polyurethane material of suitable length, be soaked in advance in xylene solution, then by casing pipe sleeve on the Ni-Ti memorial alloy core silk 1 forming tapering, core silk tip coating particular adhesive, whole piece Ni-Ti memorial alloy core silk 1 is wrapped in thermal contraction casing tube completely, then the suitable temperature and time of drying cupboard is set, the Ni-Ti memorial alloy core silk 1 packaging thermal contraction casing tube is suspended on heat treated in drying cupboard, finally complete the heat treated at seal wire two ends.
Hydrophilic coating 3 is positioned at seal wire outermost layer, and seal wire hydrophilic coating 3 is polyvinylpyrrolidone (PVP), and the seal wire after coating hangs on drying cupboard inner drying.
It is moulding that the dried seal wire of coating carries out tip, as shaping is J-shaped or other shape as required.
Last it is noted that the foregoing is only preferred embodiment of the present utility model, be not limited to this utility model, although be described in detail this utility model with reference to previous embodiment, for a person skilled in the art, it still can be modified to the technical scheme described in previous embodiment, or carries out equivalent replacement to wherein portion of techniques feature.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (8)
1. an angiography superslide seal wire, comprise Ni-Ti memorial alloy core silk, medical macromolecular materials integument and hydrophilic coating, it is characterized in that, the length of described core silk tip is 60-120mm, wherein, soft section length is 30-50mm, and the length in super soft district is 6-12mm, and described length is with core silk forward terminal as starting point calculates;
Except described super soft district, described core silk tip external diameter becomes continuous tapering to reduce gradually, the transition point being become soft district by non-soft district is soft gradual change point, and the external diameter of described soft gradual change point is 0.18-0.22mm, and the external diameter in described super soft district is 0.08-0.12mm.
2. angiography superslide seal wire according to claim 1, is characterized in that, the external diameter of described soft gradual change point is 0.2mm.
3. angiography superslide seal wire according to claim 1, is characterized in that, the external diameter in described super soft district is 0.1mm.
4. angiography superslide seal wire according to claim 1, is characterized in that, the length in described super soft district is 10mm.
5. angiography superslide seal wire according to claim 1, is characterized in that, except described core silk tip, core silk external diameter is 0.42-0.54mm.
6. angiography superslide seal wire according to claim 1, is characterized in that, the length of described core silk tip is 100mm.
7. angiography superslide seal wire according to claim 1, is characterized in that, described integument adopts polyurethane material.
8. angiography superslide seal wire according to claim 1, is characterized in that, described hydrophilic coating is polyvinylpyrrolidone PVP.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520406299.0U CN204951905U (en) | 2015-06-12 | 2015-06-12 | Angiogram superslide seal wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520406299.0U CN204951905U (en) | 2015-06-12 | 2015-06-12 | Angiogram superslide seal wire |
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| Publication Number | Publication Date |
|---|---|
| CN204951905U true CN204951905U (en) | 2016-01-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520406299.0U Active CN204951905U (en) | 2015-06-12 | 2015-06-12 | Angiogram superslide seal wire |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110075412A (en) * | 2019-04-25 | 2019-08-02 | 深圳泓一生物医疗科技有限公司 | A kind of seal wire |
-
2015
- 2015-06-12 CN CN201520406299.0U patent/CN204951905U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110075412A (en) * | 2019-04-25 | 2019-08-02 | 深圳泓一生物医疗科技有限公司 | A kind of seal wire |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180927 Address after: No. two, No. 8 CW South Road, Shunyi District, Beijing, two floor (Science and technology innovation function area) Patentee after: Heng Yi (Beijing) Medical Technology Co., Ltd. Address before: 101300 5 5 Shun Shun Road, Renhe Town, Shunyi District, Beijing. Patentee before: BEIJING HENGSHENG ZHONGHE MEDICAL INSTRUMENT CO., LTD. |
|
| TR01 | Transfer of patent right |