CN207575187U - A kind of novel delivery sheath for left atrial appendage occlusion art - Google Patents
A kind of novel delivery sheath for left atrial appendage occlusion art Download PDFInfo
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- CN207575187U CN207575187U CN201721907067.9U CN201721907067U CN207575187U CN 207575187 U CN207575187 U CN 207575187U CN 201721907067 U CN201721907067 U CN 201721907067U CN 207575187 U CN207575187 U CN 207575187U
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- delivery sheath
- tube body
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- atrial appendage
- distal end
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Abstract
The utility model is related to a kind of medical instrument more particularly to a kind of novel delivery sheath for left atrial appendage occlusion art, including sheath tube body.The tube body of the delivery sheath proximal end is made of three-layer-material, and the tube body internal layer is polytetrafluoroethylene ethylene layer, and middle level is metal layer, and outer layer is nylon layer.The tube body of the delivery sheath distal end is made of single nylon material, and hardness is less than sheath proximal tube volume surrounding nylon layer, and further, the tube body of the sheath distal end is equipped with 3 radiography holes.The tube body of delivery sheath proximal end and distal end is connected by laser welding.Because layer is polytetrafluoroethylene ethylene layer in the delivery sheath proximal tube body, middle level is metal mesh braiding layer, and outer layer is nylon layer, and such structure causes delivery sheath to have good chemical stability, lubricity and biocompatibility；Meanwhile be fabricated relative to the delivery sheath used in traditional left atrial appendage occlusion art for single material, the utility model delivery sheath has higher fracture resistance, improves the handling of delivery sheath and-service life.Further, in left atrial appendage occlusion art, delivery sheath distal end enters left atrial appendage, the tube body of delivery sheath distal end described in the utility model is made of single nylon material, relative to traditional delivery sheath, it has higher flexibility and toughness, it is possible to reduce the damage to left auricle of heart prevents from causing pericardial tamponade when puncturing left auricle of heart wall.Meanwhile in left atrial appendage occlusion art, doctor needs to determine that delivery sheath distal end and the position of occluder for left auricle, the utility model delivery sheath distal end tube body are equipped with 3 radiography holes, improve the accuracy of operation, shorten operating time by contrast agent.The utility model has flexible operability, fold resistance, reliability and the safety for improving left atrial appendage occlusion art for the delivery sheath of left atrial appendage occlusion art.
Description
Technical field
The utility model is related to a kind of medical instrument more particularly to a kind of delivery sheaths for left atrial appendage occlusion art.
Background technology
Left auricle of heart is the remnants of the original atrium sinistrum of embryonic stage, in the tube-like condition of long and narrow bending, there is a narrow pinnacle
Portion.During atrial fibrillation, left auricle of heart entrance is significantly broadening, loses effective rule and shrinks, and the introversive movement of auricle wall is difficult to cause enough
Left auricle of heart emptying, blood is caused to deposit in left auricle of heart, and then thrombosed pathologic basis.The Morphological Features of left auricle of heart itself
Blood flow is easily made to generate whirlpool and flows decrease and the condition for promoting thrombosis.
Left atrial appendage occlusion art be then by blocking left auricle of heart, when preventing atrial fibrillation in left auricle of heart thrombus formation, so as to drop
Low patients with atrial fibrillation is caused the risk of long term disability or death by thromboembolism.With the improvement of medical instrument and doctor's operating experience
Accumulation, left atrial appendage occlusion art brings new hope for the antithrombotic treatments of atrial fibrillation patients, its can be used as to prevent atrial fibrillation
The important supplement of dynamic Embolic events.
At present, left atrial appendage occlusion is carried out by Minimally Invasive Surgery and good result is achieved in clinical practice, i.e., by left auricle of heart
Plugging device is transmitted to using the method for intervention in left auricle of heart by microcatheter technology.Had developed a variety of occluder for left auricle and its
Conveying device.Traditional left auricle of heart delivery sheath proximally and distally has identical material, if ensureing delivery sheath tube body
Hardness makes it have promotion ability and is used for conveying occluder for left auricle, then easily damaged into the sheath tube body of left atrial appendage
It left auricle of heart wall or even pokes left auricle of heart wall and causes pericardial tamponade；If ensureing the softness of delivery sheath tube body, a left side is made it into
Sheath tube body inside auricle does not damage left auricle of heart, then the motive force of delivery sheath weakens, and easy bending, seriously affects the left heart
The conveying effect of ear plugging device, operating characteristics are poor.Meanwhile traditional occluder for left auricle delivery sheath distal end is generally without radiography side
Hole influences contrasting effects in clinical practice, increases operating difficulty and operating time.In conclusion the utility model provides
A kind of novel delivery sheath for left atrial appendage occlusion art, for improving problem above.
Invention content
The utility model provides a kind of safe and reliable, handling and fold resistance to solve deficiency of the prior art
The good novel delivery sheath for left atrial appendage occlusion art.Meanwhile the novel delivery sheath have good chemical stability,
Lubricity and biocompatibility.
The technical solution adopted in the utility model：A kind of novel delivery sheath for left atrial appendage occlusion art, including sheath
Tube body, delivery sheath proximal end tube body are made of three-layer-material, and the tube body outer layer is nylon layer, and middle level is metal layer, interior
Layer is polytetrafluoroethylene ethylene layer；Delivery sheath distal end tube body is formed for single nylon layer material.The delivery sheath distal tube
The nylon layer material hardness of body is less than the delivery sheath proximal tube volume surrounding nylon layer.
It is further improved as the utility model, improves the fold resistance of delivery sheath proximal end tube body, the sheath proximal tube
Body middle level is the metal mesh formed by metal wire knitted, has support and protective effect to tube body.
It is further improved as the utility model, improves delivery sheath contrasting effects, the novel delivery sheath distal tube
Body carries 3 radiography holes.
It is further improved as the utility model, the tube body of delivery sheath proximal end and distal end is connected by laser welding.
Make compared with prior art, the beneficial effects of the utility model are：The tube body of delivery sheath proximal end is by three layers of material
Matter forms, and the tube body internal layer is polytetrafluoroethylene ethylene layer, and middle level is metal mesh braiding layer, and outer layer is nylon layer.The conveying sheath
The tube body of pipe distal end is made of single nylon material, and hardness is less than sheath proximal tube volume surrounding nylon layer, and tube body is equipped with 3
A radiography hole.The tube body of delivery sheath proximal end and distal end is connected by laser welding.Because of layer in the delivery sheath proximal tube body
For polytetrafluoroethylene ethylene layer, middle level is metal mesh braiding layer, and outer layer is nylon layer, and it is good that such structure so that delivery sheath has
Chemical stability, lubricity and biocompatibility；Meanwhile relative to the delivery sheath used in traditional left atrial appendage occlusion art to be single
Material is fabricated, and the utility model delivery sheath has higher fracture resistance, is improved the handling of delivery sheath and is made
Use the service life.Further, in left atrial appendage occlusion art, delivery sheath distal end enters left atrial appendage, described in the utility model defeated
The tube body of sheath distal end is sent to be made of single nylon material, relative to traditional delivery sheath, have higher flexibility and
Toughness, it is possible to reduce the damage to left auricle of heart prevents from causing pericardial tamponade when puncturing left auricle of heart wall.Meanwhile it is sealed in left auricle of heart
In stifled art, doctor needs to determine delivery sheath distal end and the position of occluder for left auricle, the utility model conveying by contrast agent
Sheath distal end tube body is equipped with 3 radiography holes, improves the accuracy of operation, shortens operating time.The utility model conveys sheath
Pipe is with flexible operability, fold resistance, reliability and the safety for improving left atrial appendage occlusion art.
Description of the drawings
Fig. 1 is a kind of structure diagram of novel delivery sheath for left atrial appendage occlusion art of the utility model.
Fig. 2 is the close-up schematic view of novel delivery sheath distal end tube body in Fig. 1.
Fig. 3 is the sectional view of novel delivery sheath distal end tube body in Fig. 1.
Fig. 4 is the sectional view of novel delivery sheath inlet side tube body in Fig. 1.
Specific embodiment
The utility model is further described with specific embodiment with reference to the utility model Figure of description.
As shown in Figure 1, the main body of this delivery sheath is hollow sheath tube body, including delivery sheath proximal end tube body（1）With
Distal end tube body（2）.
As shown in Figure 3 and Figure 4, the proximal end tube body of the described novel delivery sheath of the present embodiment（1）By three-layer-material group
Into the proximal end tube body（1）Outer layer is nylon layer（11）, middle level is metal layer（12）, internal layer is polytetrafluoroethylene ethylene layer（13）；Institute
State delivery sheath distal end tube body（2）For single nylon layer（22）Material forms, delivery sheath distal end tube body（2）Nylon layer
（22）Material hardness is less than delivery sheath proximal end tube body（1）Outer layer nylon layer（11）.
In the present embodiment, delivery sheath proximal end tube body（1）Outer layer nylon layer（11）With higher hardness, can improve
The push ability of delivery sheath.Delivery sheath distal end tube body（2）Nylon layer（22）
With relatively low hardness, the toughness, flexibility and biocompatibility of delivery sheath can be improved, is reduced to left auricle of heart
Damage prevents from causing pericardial tamponade when puncturing left auricle of heart wall.
Further, as shown in figure 4, in the present embodiment, delivery sheath proximal end tube body（1）Middle level is is compiled by wire
The metal mesh knitted（12）, the support force of tube body is improved, sheath is ensure that under the premise of very thin wall thickness, still with stronger
Bending resistance and compressive property avoid situations such as bending, deformation occur in delivery sheath tube body during conveying occluder for left auricle.
Further, as shown in figure 4, in the present embodiment, delivery sheath proximal end tube body（1）Internal layer is polytetrafluoroethylene (PTFE)
Layer（13）, polytetrafluoroethylene material has excellent chemical stability, corrosion resistance, leakproofness, high lubrication non-stick, and has
There is good biocompatibility, while there is the unrivaled smoothness of other high molecular materials.When it is as minimally invasive intervention
During the delivery sheath of left atrial appendage occlusion art, the resistance between occluder for left auricle and delivery sheath can be reduced, improve delivery sheath
It is handling.
In the present embodiment, the tube body of the delivery sheath proximal end and distal end is connected by laser welding.
Further, in the present embodiment, delivery sheath distal end tube body（2）With radiography hole（21）, made for enhancing
Shadow effect.In left atrial appendage occlusion art, doctor needs to determine delivery sheath distal end and the position of occluder for left auricle by contrast agent
It puts.If delivery sheath is without radiography hole, during clinical operation, the time that contrast agent retains in diffusion is relatively short,
Certain difficulty is located to delivery sheath distal end and occluder for left auricle；Also, harder cladding material is difficult to manufacture radiography
Hole.In the utility model, delivery sheath distal end tube body（2）Use the smaller nylon of hardness（22）Material, conducive to manufacture radiography hole.
The radiography hole（21）Quantity be 3.
A kind of novel delivery sheath for left atrial appendage occlusion art of the utility model, have flexible operability, fold resistance,
Reliability and the safety for improving left atrial appendage occlusion art.
The foregoing is merely the more typical example of the utility model, it is not used in that limit this example novel, it is all in the utility model
On the basis of improve and extension example be within the protection scope of the utility model.
Claims (4)
1. a kind of novel delivery sheath for left atrial appendage occlusion art, including sheath tube body, it is characterised in that：The delivery sheath
Proximal end tube body（1）It is made of three-layer-material, the tube body outer layer is nylon layer（11）, middle level is metal layer（12）, internal layer is poly-
Tetrafluoroethene layer（13）；Delivery sheath distal end tube body（2）For single nylon layer（22）Material forms, and the delivery sheath is remote
End pipe body（2）Nylon layer（22）Material hardness is less than delivery sheath proximal end tube body（1）Outer layer nylon layer（11）.
2. it to be used for the novel delivery sheath of left atrial appendage occlusion art according to claim 1, it is characterised in that：The delivery sheath
Proximal end tube body（1）Middle level is the metal mesh formed by metal wire knitted（12）.
3. it to be used for the novel delivery sheath of left atrial appendage occlusion art according to claim 1, it is characterised in that：The delivery sheath
Distal end tube body（2）With radiography hole（21）, the radiography hole（21）Quantity is 3.
4. it to be used for the novel delivery sheath of left atrial appendage occlusion art according to claim 1, it is characterised in that：The delivery sheath
The tube body of proximal end and distal end is connected by laser welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721907067.9U CN207575187U (en) | 2017-12-29 | 2017-12-29 | A kind of novel delivery sheath for left atrial appendage occlusion art |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721907067.9U CN207575187U (en) | 2017-12-29 | 2017-12-29 | A kind of novel delivery sheath for left atrial appendage occlusion art |
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| Publication Number | Publication Date |
|---|---|
| CN207575187U true CN207575187U (en) | 2018-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721907067.9U Active CN207575187U (en) | 2017-12-29 | 2017-12-29 | A kind of novel delivery sheath for left atrial appendage occlusion art |
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| CN (1) | CN207575187U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109692027A (en) * | 2018-12-03 | 2019-04-30 | 北京泰杰伟业科技有限公司 | A kind of whole course visible takes thrombus device |
| CN113332562A (en) * | 2021-05-18 | 2021-09-03 | 常州瑞神安医疗器械有限公司 | Multilayer braided sheath tube |
-
2017
- 2017-12-29 CN CN201721907067.9U patent/CN207575187U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109692027A (en) * | 2018-12-03 | 2019-04-30 | 北京泰杰伟业科技有限公司 | A kind of whole course visible takes thrombus device |
| CN113332562A (en) * | 2021-05-18 | 2021-09-03 | 常州瑞神安医疗器械有限公司 | Multilayer braided sheath tube |
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| GR01 | Patent grant | ||
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| CP03 | Change of name, title or address |
Address after: 200333 Room 202, No. 2, Lane 2888, Qilianshan South Road, Putuo District, Shanghai Patentee after: Shanghai Pushi Medical Equipment Co., Ltd Address before: 201807, A, building 2, block 1355, Chengbei Road, Shanghai, Jiading District, Patentee before: Shanghai Push Medical Device Technology Co., Ltd. |