CN201147388Y - Sheath tube for pushing delivery of intracranial self-expanding stent - Google Patents
Sheath tube for pushing delivery of intracranial self-expanding stent Download PDFInfo
- Publication number
- CN201147388Y CN201147388Y CN 200820054655 CN200820054655U CN201147388Y CN 201147388 Y CN201147388 Y CN 201147388Y CN 200820054655 CN200820054655 CN 200820054655 CN 200820054655 U CN200820054655 U CN 200820054655U CN 201147388 Y CN201147388 Y CN 201147388Y
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- tube
- sheath tube
- distal portions
- pushing sheath
- pushing
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Abstract
The utility model provides a pushing sheath tube used for an encephalic self-extension bracket towveyor, which belongs to the medical appliance technical field and is characterized in that the pushing sheath tube is a stainless steel tube which has a structure that the length of the pushing sheath tube is two thirds of the height of an adult, the external diameter is less than the internal diameter of a human blood vessel, and the end part is provided with a development ring and supports a retiform bracket which is arranged inside an external sheath conduit and is telescopic, the rear end part has the length not less than 15 centimeters, the sum of the length of the rear end part and the middle end part is not less than 40 centimeters. The wall of the pushing sheath tube becomes thinner from the near end part to the rear end, or the pushing sheath tube is a spiral groove stainless steel tube cut into transparent walls, the cutting trace spiral distance becomes bigger in sequence, or the stainless steel tube is connected with a middle end part and the rear end part consisting of a spring formed by tightly winding an elastic metal material without clearance to form a plurality of series of structures so that different requirements are satisfied; by implementing the pushing sheath tube, the pushing sheath tube satisfies the sufficient flexibility and guarantees the positioning accuracy when a bracket is released. The pushing sheath tube solves the two problems to ensure that the pushing sheath tube can be applied practically.
Description
Technical field
Belonging to technical field of medical instruments, exactly is a kind of intervention therapeutic apparatus technology for the treatment of cerebral artery vessel tumor and cerebral arterial stenosis that relates to.
Background technology
At present, for the intracranial aneurysm treatment,, adopted aneurysm thromboembolism interventional therapy except direct surgery folder closes the operation.Common technology is the turn thromboembolism, one or more turns are implanted in the aneurysm by the method that gets involved, after the shared volume of turn reaches the certain proportion of whole aneurysm volume, the flow velocity of blood in aneurysm reduces gradually, in aneurysm, be close to turn at last and form thrombosis, thrombus organization forms entity and has sealed aneurysm, prevents aneurysm rupture with this.Yet for wide carotid aneurysm, single turn thromboembolism clinical effectiveness is not good, one of the main reasons be turn easily leniently the neck place deviate from aneurysm and can't the thromboembolism aneurysm, and cause the complication of carrying tumor parent blood vessel obturation.Adopt the wide carotid aneurysm of self expandable net cribbing secondary spring circle thromboembolism.To the target lesion place, support is striden aneurysm neck and is discharged by the interventional method transfer gantry.The turn thromboembolism method of operative norm then, turn enters aneurysm through microtubular by the support mesh, because support is auxiliary, the turn in the aneurysm can not come off aneurysm and reach the aneurysmal purpose of abundant thromboembolism.
In addition the blood vessel that becomes for narrow sexually transmitted disease (STD) also the mode of available intervention the eject support is implanted the stenotic lesion position.It is strutted, reach the purpose of unblocked blood flowing.
Under the situation of above-mentioned two kinds of use eject supports, all require its carrier that the accurate in locating function is arranged, promptly can accurately support be delivered to diseased region.The location of support not brigadier directly causes the intervene operation failure, does not reach the therapeutic effect of anticipation.Yet the eject support in early stage and induction system all have the inaccurate problem in release location in various degree, and its reason is as follows:
The carrier of self expandable net cribbing is made up of one group of conduit, comprises an epitheca pipe, a pushing sheath tube.The eject support is loaded in the epitheca pipe.The support that can develop is delivered to diseased region and is begun to discharge, and pushes to guarantee and hold motionlessly, returns and removes the epitheca pipe, and the support original position is discharged.At this moment the epitheca pipe is subjected to pulling force, pushes pipe and is stressed, be i.e. support force.Because cerebrovascular is very thin, general 2-6mm, very crooked again, certain pliability that has that double-deck induction system will be done could be passed through.Because that does too firmly not only is difficult to by blood vessel, also can cause vasospasm, cause catastrophic failure.But too soft if pushing sheath tube is done, the excesssive gap between interior epitheca pipe will influence pushing sheath tube and push power and rigidity.Pushing sheath tube retraction when just being under pressure make pushed support displacement, thereby it is inaccurate to cause support to discharge the location.
Summary of the invention
This utility model provides existing enough whole compliances, again can be reliably localized, and available to adapt to a kind of pushing sheath tube that is used for intracranial self-expanding bracket conveyer of different blood vessel needs.
The technical scheme that this utility model is taked:
A kind of pushing sheath tube that is used for intracranial self-expanding bracket conveyer, have 2/3rds to be grown up highly long by its length, external diameter is less than people's vessel diameter, the stainless steel tube that the end band develops and encloses, its end heads on to be contained in the conduit of epitheca pipe that tube wall is a composite construction and is contraction-like net cribbing, the pushing sheath tube that constitutes, its scheme is: pushing sheath tube is from the proximal part to the distal portions, can be divided into three parts: the proximal part of nearly base external part is distal portions and marginal middle-end part away from the end of base; Distal portions length is not less than 15cm, and distal portions and medial end portions branch sum are not less than 40cm.
Described stainless steel tube is the cobalt-chromium alloy pipe, or the Ni-Ti alloy pipe.Described tube wall is that the epitheca pipe of composite construction is to make the composite construction that liner and polyurethane constitute as overcoat by politef.Described from the proximal part to the distal portions, the attenuation successively of its tube wall.Described pushing sheath tube is the helicla flute stainless steel tube that is cut into wall, and its cut channel pitch successively from large to small from the proximal part to the distal portions.Described proximal part is stainless steel tube; And with do not have the gap compact winding by elastic metallic material and constitute the middle-end part that spring forms and be connected with distal portions.Described proximal part, for caliber from closely to reducing far gradually, tube wall attenuation gradually constitutes vertebra shape, it is outer to put does not have the gap compact winding by elastic metallic material and constitutes middle-end that spring forms partly and distal portions.Described proximal part is stainless steel tube, and do not have the gap compact winding by elastic metallic material and constitute spring and form medial end portions and divide and to be connected with distal portions, and middle-end partly and distal portions all put whole section heat-shrink tube that constitutes by politef; Or only distal portions puts the heat-shrink tube that is made of politef.Described proximal part, for caliber from closely to reducing far gradually, tube wall attenuation gradually constitutes vertebra shape, it is outer to put does not have the gap compact winding by elastic metallic material and constitutes spring and forms medial end portions branch and distal portions; And all put whole section heat-shrink tube that constitutes by politef; Or distal portions puts the heat-shrink tube that is made of politef.
Good effect behind enforcement this utility model:
This utility model makes carrier submissiveer, and pushing sheath tube is incompressible vertically.Both satisfy enough compliances, guaranteed the accurate positioning when support discharges again.Contact surface is fluoroplastics between interior epitheca pipe, and the frictional force during propelling movement reduces greatly.The cranial nerve blood vessel is thinner, and very crooked.Harder carrier be difficult to by and easily cause vasospasm.Require induction system enough submissive.Yet for the pushing sheath tube that reaches this purpose product in early stage is soft excessively, can be compressed when ' propelling movement ', make by the support of ' propelling movement ' location inaccurate.This utility model has solved these two problems in the treatment effectively.
Description of drawings
Fig. 1, conveyer construction sketch map
Fig. 2, pushing sheath tube structural representation
Fig. 3, add cover all-plastic thermoplastic tube for stainless steel tube cutting
Fig. 4, add one section plastics thermoplastic tube of cover for stainless steel tube cutting
Fig. 5,, stainless steel tube cutting adds one section plastics thermoplastic tube of cover again for adding spring
Fig. 6, for the NiTi pipe add the cover one section plastics thermoplastic tube
Fig. 7,, stainless steel tube cutting adds cover all-plastic thermoplastic tube for adding spring
Fig. 8,, the NiTi pipe adds cover all-plastic thermoplastic tube for adding spring
The specific embodiment
Now the utility model is described in further detail in conjunction with the accompanying drawings
A kind of pushing sheath tube that is used for intracranial self-expanding bracket conveyer, have 2/3rds to be grown up highly long by its length, external diameter is less than people's vessel diameter, the end band develops and encloses 1 stainless steel tube, its end heads on and is contained in the interior contraction-like net cribbing 5 of conduit that tube wall is the epitheca pipe 2 of composite construction 3, the pushing sheath tube 4 that constitutes, it is characterized in that: pushing sheath tube 4 is from the proximal part to the distal portions, can be divided into three parts: the proximal part 6 of nearly base external part, the end be distal portions 8 and marginal middle-end part 7; Distal portions length is not less than 15cm, and distal portions and medial end portions branch sum are not less than 40cm.Described stainless steel tube is the cobalt-chromium alloy pipe, or the Ni-Ti alloy pipe.Described tube wall is that the epitheca pipe of composite construction is to make the composite construction that liner and polyurethane constitute as overcoat by politef.Described from the proximal part to the distal portions, the attenuation successively of its tube wall.Described pushing sheath tube 4 is the stainless steel tubes that are cut into the helicla flute 9 of wall, and its cut channel pitch successively from large to small from the proximal part to the distal portions.Described proximal part is stainless steel tube; And with do not have the gap compact winding by elastic metallic material and constitute the middle-end part that spring 10 forms and be connected with distal portions.Described proximal part, for caliber from closely to reducing far gradually, tube wall attenuation gradually constitutes vertebra shape, it is outer to put does not have the gap compact winding by elastic metallic material and constitutes middle-end that spring forms partly and distal portions.Described proximal part is stainless steel tube, and do not have the gap compact winding by elastic metallic material and constitute spring and form medial end portions and divide and to be connected with distal portions, and middle-end partly and distal portions all put whole section heat-shrink tube 11 that constitutes by politef; Or only distal portions puts the heat-shrink tube that is made of politef.Described proximal part, for caliber from closely to reducing far gradually, tube wall attenuation gradually constitutes vertebra shape, it is outer to put does not have the gap compact winding by elastic metallic material and constitutes spring and forms medial end portions branch and distal portions; And all put whole section heat-shrink tube that constitutes by politef; Or distal portions puts the heat-shrink tube that is made of politef.
Claims (7)
1, a kind of pushing sheath tube that is used for intracranial self-expanding bracket conveyer, have 2/3rds to be grown up highly long by its length, external diameter is less than people's vessel diameter, the end band develops and encloses the stainless steel tube (11) of (1), its end heads on to be contained in the conduit of epitheca pipe (2) that tube wall is a composite construction (3) and is contraction-like net cribbing (5), the pushing sheath tube (4) that constitutes, it is characterized in that: pushing sheath tube (4) is from the proximal part to the distal portions, can be divided into three parts: the proximal part (6) of nearly base external part is distal portions (8) and marginal middle-end partly (7) away from the end of base; Distal portions length is not less than 15cm, and distal portions and medial end portions branch sum are not less than 40cm.
2, a kind of pushing sheath tube that is used for intracranial self-expanding bracket conveyer according to claim 1 is characterized in that: described from the proximal part to the distal portions, and the attenuation successively of its tube wall.
3, a kind of pushing sheath tube that is used for intracranial self-expanding bracket conveyer according to claim 1, it is characterized in that: described pushing sheath tube (4) is the stainless steel tube of the helicla flute (9) that is cut into wall, and its cut channel pitch successively from large to small from the proximal part to the distal portions.
4, a kind of pushing sheath tube that is used for intracranial self-expanding bracket conveyer according to claim 1, it is characterized in that: described proximal part is stainless steel tube; And with do not have the gap compact winding by elastic metallic material and constitute the middle-end part that spring (10) forms and be connected with distal portions.
5, a kind of pushing sheath tube that is used for intracranial self-expanding bracket conveyer according to claim 1, it is characterized in that: described proximal part, for caliber from closely to reducing far gradually, tube wall attenuation gradually constitutes vertebra shape, and it is outer to put does not have the gap compact winding by elastic metallic material and constitute middle-end that spring forms partly and distal portions.
6, a kind of pushing sheath tube that is used for intracranial self-expanding bracket conveyer according to claim 1, it is characterized in that: described proximal part, be stainless steel tube, with do not have the gap compact winding by elastic metallic material and constitute spring and form medial end portions and divide and to be connected with distal portions, and middle-end partly and distal portions all put whole section heat-shrink tube that constitutes by politef (12); Or only distal portions puts the heat-shrink tube that is made of politef.
7, a kind of pushing sheath tube that is used for intracranial self-expanding bracket conveyer according to claim 1, it is characterized in that: described proximal part, for caliber from closely to reducing far gradually, tube wall attenuation gradually constitutes vertebra shape, and it is outer to put does not have the gap compact winding by elastic metallic material and constitute spring and forms medial end portions branch and distal portions; And all put whole section heat-shrink tube that constitutes by politef; Or distal portions puts the heat-shrink tube that is made of politef.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200820054655 CN201147388Y (en) | 2008-01-14 | 2008-01-14 | Sheath tube for pushing delivery of intracranial self-expanding stent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200820054655 CN201147388Y (en) | 2008-01-14 | 2008-01-14 | Sheath tube for pushing delivery of intracranial self-expanding stent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201147388Y true CN201147388Y (en) | 2008-11-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200820054655 Expired - Lifetime CN201147388Y (en) | 2008-01-14 | 2008-01-14 | Sheath tube for pushing delivery of intracranial self-expanding stent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201147388Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102283728A (en) * | 2011-06-28 | 2011-12-21 | 先健科技(深圳)有限公司 | Lumen bracket conveying system |
| CN103190967A (en) * | 2013-03-15 | 2013-07-10 | 杭州启明医疗器械有限公司 | Interventional device delivering system and sheath core thereof |
| CN111067682A (en) * | 2018-10-22 | 2020-04-28 | 东莞市先健医疗有限公司 | Assembly and system for controlling release of implantable device |
-
2008
- 2008-01-14 CN CN 200820054655 patent/CN201147388Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102283728A (en) * | 2011-06-28 | 2011-12-21 | 先健科技(深圳)有限公司 | Lumen bracket conveying system |
| CN102283728B (en) * | 2011-06-28 | 2014-09-10 | 先健科技(深圳)有限公司 | Lumen bracket conveying system |
| CN103190967A (en) * | 2013-03-15 | 2013-07-10 | 杭州启明医疗器械有限公司 | Interventional device delivering system and sheath core thereof |
| CN103190967B (en) * | 2013-03-15 | 2015-08-05 | 杭州启明医疗器械有限公司 | A kind of intervention apparatus conveying system and sheath core thereof |
| CN111067682A (en) * | 2018-10-22 | 2020-04-28 | 东莞市先健医疗有限公司 | Assembly and system for controlling release of implantable device |
| CN111067682B (en) * | 2018-10-22 | 2022-06-07 | 东莞市先健医疗有限公司 | Assembly and system for controlling release of implantable device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: JIAQI BIOLOGY TECHNOLOGY( SHANGHAI ) CO., LTD. Free format text: FORMER OWNER: MINGYI BIOLOGY SCIENCE AND TECHNOLOGY( SHANGHAI ) CO., LTD. Effective date: 20090807 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20090807 Address after: Room 328, 301 Edison Road, Zhangjiang hi tech garden, Shanghai, Pudong: 201203 Patentee after: Achieva Medical (Shanghai) Co., Ltd. Address before: No. 328 Edison Road, Zhangjiang hi tech park, Shanghai, 303, postcode: 201203, Pudong Patentee before: Mingyi Biological Technology (Shanghai) Co., Ltd. |
|
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Ke Danian Inventor before: Zhang Yi |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170620 Address after: 100036 Beijing city Haidian District Peking University Park apartment 102 room 13 Patentee after: Ke Danian Address before: 201203, room 328, 301 Edison Road, Zhangjiang hi tech garden, Shanghai, Pudong Patentee before: Achieva Medical (Shanghai) Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20081112 |