CN100425205C - Dual-wire distal protector - Google Patents
Dual-wire distal protector Download PDFInfo
- Publication number
- CN100425205C CN100425205C CNB2005100258777A CN200510025877A CN100425205C CN 100425205 C CN100425205 C CN 100425205C CN B2005100258777 A CNB2005100258777 A CN B2005100258777A CN 200510025877 A CN200510025877 A CN 200510025877A CN 100425205 C CN100425205 C CN 100425205C
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- Prior art keywords
- protector
- guide wire
- delivery sheath
- filter screen
- thread eye
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Abstract
The present invention discloses a dual guide wire distal protector which comprises a protector body composed of a self-eject framework and a filter net with a hole, a guide wire of a protector and a delivering sheath tube, wherein the protector body is mutually fixedly connected with the guide wire via a connecting piece. The present invention is characterized in that the tube wall of the conveying sheath tube is provided with two guide wire holes, namely the first guide wire hole and the second guide wire hole, and the guide wire of the protector penetrates through the second guide wire hole and fixes the retracted protector body between the first guide wire hole and the second guide wire hole. The present invention uses a dual guide wire structure, uses a soft conveying tube from the first guide wire hole to a distal port in the conveying sheath tube for penetrating through a lesion blood vessel, enables the protector body to penetrate through the lesion blood vessel distal and is released at the far end of the interventional therapy part; thus, coronary artery blood vessels are ensured not to be damaged and cramped, and the adoption of a distal protective device by coronary artery intervention is made probable. The present invention is particularly suitable for the technology of cardiac interventional therapy.
Description
Technical field:
The present invention relates to a kind of medical apparatus and instruments.Specifically get involved the distal protector that is suitable for heart coronary artery in the medical skill.
Technical background:
In the existing interventional technique, the vascular lesion position of being treated has the blocks of solid that may come off, as thrombosis, and atherosclerotic plaque etc.Come off in interventional procedure as them and just can stop up the blood vessel in its downstream, cause the infringement of downstream organ.As occur in and to cause brain to fasten plug more than the cervical region; Betide heart arteria coronaria blood vessel and can make apex of the heart position blood vessel blockage cause the heart ridge, apex of the heart position, thereby necrosis stops jumping.If place distal protector, just can stop this dangerous generation at interventional therapy position far-end (being the downstream).The effect of protector is that the block in blood flow filter is lived, and makes it can not the clog downstream blood vessel.Again the filter screen of protector and filter are lived after interventional procedure is finished the solid income reclaim sheath common take out external.
The filter screen of existing distal protector is fixed on the seal wire, entangles with delivery sheath (epitheca pipe).Seal wire, umbrella and epitheca assembly are together sent into the pathological changes far-end.This mode of movement only is applicable to peripheral blood vessels such as carotid artery, renal artery, and the protector system passes the pathological changes of this class blood vessel easily; And for coronary artery pathological changes; this kind protector is owing to the leading portion at seal wire adds umbrella; after epitheca has been overlapped again in the umbrella outside; make that whole protecting device structure is harder; for thinner, softer and tortuous coronary artery; be difficult to pass, and easily cause blood vessel wound or spasm when passing, therefore inapplicable for the coronary artery of heart.So it is actually rare that present distal protector is used for the situation of arteria coronaria interventional therapy, therefore also just increased the risk of distal vessels thromboembolism in the coronary artery interventional procedure.
Summary of the invention:
Technical problem to be solved by this invention is a kind of structure for conveying that is exclusively used in cardiovascular distal protector and is convenient to pass the heart coronary artery blood vessel of design, to overcome the above-mentioned defective that prior art exists.
The technical scheme of technical solution problem of the present invention is as follows:
A kind of dual-wire distal protector; comprise protector main body, protector seal wire and delivery sheath that eject skeleton and filter screen with holes constitute; protector main body and seal wire are mutually permanently connected by connector; the tube wall of described delivery sheath is provided with two thread eyes; first thread eye and second thread eye, described protector seal wire passes second thread eye protector main body of packing up is fixed between first thread eye and second thread eye.Described protector main body is after release, and the eject skeleton flicks, and makes the filter screen that covers on the skeleton be launched into the protection umbrella.
Term: far-end is meant the end away from the operating grip position, and near-end is meant the end near the operating grip position.
Described first thread eye apart from the distance of the remote port of delivery sheath greater than the total length of 50mm less than delivery sheath.Preferred distance is 100～250mm.
Described delivery sheath also comprises the sleeve shape guide thimble that is fixed in the sheath pipe, and the proximal port of described guide thimble is embedded in second thread eye, and the length of described guide thimble is less than the spacing between first thread eye and second thread eye.
Described delivery sheath is for becoming diameter sheath pipe; the diameter that one section of guide thimble is set in the described delivery sheath is less than the diameter of guide thimble remote port to another section at sheath pipe remote port place; described telescopic outer wall is near the inwall of delivery sheath, and described protector main body is fixed on outside the remote port of guide thimble.
The distal end of described delivery sheath is provided with radiopaque development labelling, also is provided with radiopaque development labelling on the described eject skeleton.
Described eject skeleton adopts the cutting of NiTi pipe to form, and described filter screen with holes is polyurethane filter screen, politef or nylon.
The present invention uses like this: before the use, the protector seal wire passes from second thread eye of near-end the protector main body is pulled between two side openings.This moment the far-end side opening promptly the far-end of first side opening be one section empty delivery conduit, the length 100～250mm of this section empty pipe can wear each position to anteroapical arteria coronaria blood vessel from the arteria coronaria mouth.Earlier pass through the arteria coronaria diseased region with common seal wire during use, the EC far-end that the carrier of protector will be housed again penetrates from seal wire near-end afterbody, passes from first side opening, passes diseased region along seal wire.The distal end of delivery conduit has the development labelling.Make the development labelling be positioned at the position of plan release guard device filter screen, withdraw from the common seal wire that penetrates usefulness.The protector main body is pushed to the position to be discharged, end of delivery sheath by the protector seal wire that is fixed with distal protector; the recession delivery sheath; protector is just deviate from the sheath pipe and is automatically springed open, and the development Mk system on the protector main body can indicate protector and whether be released in desired site and automatically springed open umbrella.Withdraw from its delivery sheath external after the protector main body flicks.The apparatus that to do intervention along the fixing protector seal wire of protector main body penetrates from seal wire near-end afterbody, sends into diseased region, the enforcement interventional therapy.Withdraw from external along the protector seal wire intervention therapeutic apparatus after interventional therapy is finished.Again protector is reclaimed sheath and send in the body, to protector main body off-position along the protector seal wire.In the speckle income sheath that protector is lived together with filter, withdraw from externally simultaneously with sheath, promptly finish the overall process of interventional therapy.
By above disclosed technical scheme as can be known, the present invention compared with prior art has following advantage:
1. the present invention adopts two guide wires, and a seal wire is used for whole distal protector is transported to lesion, utilizes the softer empty carrier pipe from first thread eye to remote port in the delivery sheath, passes through lesion vessels; Make the protector main body pass through the far-end of lesion vessels again and discharge, thereby guarantee that coronary artery does not damage not spasm, arteria coronaria is got involved adopted distal protection device to become possibility at the interventional therapy position;
2. in the arteria coronaria interventional procedure, increase protector, reduced distal vessels thromboembolism risk;
3. this structure not only can cooperate support and sacculus interventional procedure to use, but also can cooperate traditional thrombolytic, gets bolt treatment operation, and the acute myocardial infarction therapeutic effect is significantly improved.
Have advantages such as simple in structure, easy to use, that protection is effective, be particularly suitable for the interventional therapeutic technique of heart.
Description of drawings
Fig. 1 is that dual-wire distal protector of the present invention uses the pre-structure sketch map;
Fig. 2 is that protector main body of the present invention discharges the back structural representation;
Fig. 3 is the delivery sheath structural representation.
The specific embodiment
Further specify the present invention below in conjunction with accompanying drawing.
Referring to Fig. 1, Fig. 2 and Fig. 3; dual-wire distal protector of the present invention; comprise protector main body 1, protector seal wire 3 and delivery sheath 2 that eject skeleton 101 and filter screen 102 with holes constitute; protector main body 1 is mutually permanently connected by heavy metal pipe 103 with seal wire 3; the tube wall of described delivery sheath 2 is provided with two thread eyes; first thread eye 201 and second thread eye 202, described protector seal wire 3 pass second thread eye 202 the protector main body 1 of packing up are fixed in the delivery sheath between first thread eye 201 and second thread eye 202.
As a further improvement on the present invention, the first seal wire side opening 201 is 100～250mm apart from the distance of the remote port A of delivery sheath.Also comprise the sleeve shape guide thimble 203 that is fixed in the delivery sheath 2, the proximal port B of described guide thimble 203 is embedded in second thread eye 202, and the length of described guide thimble 203 is less than the spacing between first thread eye 201 and second thread eye 202.Thereby in recalling protector main body process, seal wire is played the effect of guiding, insert and protector is packed up in second thread eye thereby be convenient to protector seal wire tail end.
Described delivery sheath 2 is for becoming diameter sheath pipe, and the diameter that one section of guide thimble is set in the described delivery sheath 2 is less than the diameter of guide thimble remote port to another section at sheath pipe port place, and promptly AB section sheath pipe diameter is greater than BC section sheath pipe diameter.Described telescopic outer wall is near the inwall of delivery sheath, and described protector main body 1 of packing up is fixed on outside the remote port B of guide thimble.The location of protector main body in the sheath pipe of adopting this kind reducing sheath pipe to help packing up.
Embodiment:
The acute heart ridge took place in 58 years old in female patients * * *; contrast examination diagnosis branch of coronary artery is stopped up by acute thrombus; earlier pass diseased region with common seal wire; again protector delivery sheath of the present invention is penetrated from common wire distal afterbody, penetrate, deliver to the diseased region far-end from first thread eye; the release guard device; the blood vessel blockage place makes thrombolytic with the basic prunus mume (sieb.) sieb.et zucc. of urine and handles, acute thrombus by molten be that the protected device filter of fritter is lived, the sheath taking-up is external in company with reclaiming.Patient cures.
Claims (5)
1. dual-wire distal protector, comprise protector main body, protector seal wire and delivery sheath that eject skeleton and filter screen with holes constitute, protector main body and seal wire are mutually permanently connected by connector, it is characterized in that, the tube wall of described delivery sheath is provided with two thread eyes, first thread eye and second thread eye, described protector seal wire pass second thread eye protector main body of packing up are fixed between first thread eye and second thread eye; Described filter screen covers on the eject skeleton, and after described protector main body discharged, the eject skeleton flicked and makes filter screen be launched into the protection umbrella;
Described delivery sheath also comprises the sleeve shape guide thimble that is fixed in the sheath pipe, and the proximal port of described guide thimble is embedded in second thread eye, and the length of described guide thimble is less than the spacing between first thread eye and second thread eye;
Described delivery sheath is for becoming diameter sheath pipe; the diameter that one section of guide thimble is set in the described delivery sheath is less than the diameter of guide thimble remote port to another section at sheath pipe remote port place; the outer wall of described guide thimble is near the inwall of delivery sheath, and described protector main body is fixed on outside the remote port of guide thimble.
2. dual-wire distal protector according to claim 1 is characterized in that, described first thread eye apart from the distance of the remote port of delivery sheath greater than the total length of 50mm less than delivery sheath.
3. dual-wire distal protector according to claim 1 and 2 is characterized in that, the distal end of described delivery sheath is provided with radiopaque development labelling, also is provided with radiopaque development labelling on the described eject skeleton.
4. dual-wire distal protector according to claim 1 and 2 is characterized in that, described eject skeleton adopts the cutting of NiTi pipe to form, and described filter screen with holes is a kind of of polyurethane filter screen, politef filter screen or nylon leaching net.
5. dual-wire distal protector according to claim 3 is characterized in that, described eject skeleton adopts the cutting of NiTi pipe to form, and described filter screen with holes is a kind of of polyurethane filter screen, politef filter screen or nylon leaching net.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100258777A CN100425205C (en) | 2005-05-17 | 2005-05-17 | Dual-wire distal protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100258777A CN100425205C (en) | 2005-05-17 | 2005-05-17 | Dual-wire distal protector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1864639A CN1864639A (en) | 2006-11-22 |
| CN100425205C true CN100425205C (en) | 2008-10-15 |
Family
ID=37423901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100258777A Expired - Fee Related CN100425205C (en) | 2005-05-17 | 2005-05-17 | Dual-wire distal protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100425205C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102764165A (en) * | 2012-08-13 | 2012-11-07 | 宁波健世生物科技有限公司 | Percutaneous aorta or aorta valve stent conveying system |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103349577B (en) * | 2012-11-30 | 2015-05-06 | 宁波健世生物科技有限公司 | Percutaneous aorta bracket or aortic valve bracket system with far-end protection |
| CN103961782A (en) * | 2014-05-08 | 2014-08-06 | 中国人民解放军第三军医大学第一附属医院 | Novel thrombus-falling-off-resisting type central venous catheter |
| CN107440764B (en) * | 2017-08-16 | 2023-10-27 | 北京赛铂医药科技有限公司 | Conveying device of intravascular distal protector |
| CN108030571A (en) * | 2017-12-19 | 2018-05-15 | 普霖医疗科技(广州)有限公司 | A kind of vena cava filter |
| CN108143464A (en) * | 2018-01-19 | 2018-06-12 | 上海唯域医疗科技有限公司 | It takes bolt conduit and takes bolt device for take bolt conduit |
| CN113081383B (en) * | 2021-04-09 | 2023-01-10 | 苏州中天医疗器械科技有限公司 | Thrombus filtration system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003105721A2 (en) * | 2002-06-14 | 2003-12-24 | Ev3 Inc. | Rapid exchange catheters usable with embolic protection devices |
| CN2640421Y (en) * | 2003-09-23 | 2004-09-15 | 北京有色金属研究总院 | Supporting reclaimable inferior caval vein filter |
| CN2643835Y (en) * | 2003-08-26 | 2004-09-29 | 微创医疗器械(上海)有限公司 | Ellipsoidal-shaped protector of blood vessel terminal |
| CN2824849Y (en) * | 2005-05-17 | 2006-10-11 | 微创医疗器械(上海)有限公司 | Distal end protector with dual wire guide |
-
2005
- 2005-05-17 CN CNB2005100258777A patent/CN100425205C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003105721A2 (en) * | 2002-06-14 | 2003-12-24 | Ev3 Inc. | Rapid exchange catheters usable with embolic protection devices |
| CN2643835Y (en) * | 2003-08-26 | 2004-09-29 | 微创医疗器械(上海)有限公司 | Ellipsoidal-shaped protector of blood vessel terminal |
| CN2640421Y (en) * | 2003-09-23 | 2004-09-15 | 北京有色金属研究总院 | Supporting reclaimable inferior caval vein filter |
| CN2824849Y (en) * | 2005-05-17 | 2006-10-11 | 微创医疗器械(上海)有限公司 | Distal end protector with dual wire guide |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102764165A (en) * | 2012-08-13 | 2012-11-07 | 宁波健世生物科技有限公司 | Percutaneous aorta or aorta valve stent conveying system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1864639A (en) | 2006-11-22 |
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Owner name: SHANGHAI MICROPORT MEDICAL EQUIPMENT (GROUP) CO., Free format text: FORMER NAME: WEICHUANG MEDICAL EQUIPMENT (SHANGHAI) CO., LTD. |
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| CP01 | Change in the name or title of a patent holder |
Address after: 201203 Shanghai City Newton Road, Pudong New Area Zhangjiang hi tech Park No. 501 Patentee after: Shanghai MicroPort Medical Equipment (Group) Co., Ltd. Address before: 201203 Shanghai City Newton Road, Pudong New Area Zhangjiang hi tech Park No. 501 Patentee before: Weichuang Medical Equipment (Shanghai) Co., Ltd. |
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| TR01 | Transfer of patent right |
Effective date of registration: 20160229 Address after: 201318 Shanghai city wide 222 Lane 16 Pudong New Area Road Patentee after: Minimally invasive Shentong medical technology (Shanghai) Co., Ltd. Address before: 201203 Shanghai City Newton Road, Pudong New Area Zhangjiang hi tech Park No. 501 Patentee before: Shanghai MicroPort Medical Equipment (Group) Co., Ltd. |
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| DD01 | Delivery of document by public notice |
Addressee: Hong Xiaopeng Document name: Notification of Passing Examination on Formalities |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081015 Termination date: 20190517 |