CN104042372B - A kind of recoverable hepatic vein support - Google Patents
A kind of recoverable hepatic vein support Download PDFInfo
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- CN104042372B CN104042372B CN201410262662.6A CN201410262662A CN104042372B CN 104042372 B CN104042372 B CN 104042372B CN 201410262662 A CN201410262662 A CN 201410262662A CN 104042372 B CN104042372 B CN 104042372B
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- connecting rod
- recoverable
- hepatic vein
- endovascular stent
- screw thread
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Abstract
The invention discloses a kind of recoverable hepatic vein support, belong to intervention technical field of medical equipment, comprise connect successively endovascular stent, connecting rod, extension rod and conveying and recovery sheath pipe, wherein, endovascular stent is made up of tinsel, for self-expanding expansion support, length is 50mm-70mm; Tinsel is 6, is all obliquely installed, and two ends are gathered integral, and wherein recovery end stent diameter is greater than release end diameter, overall in bicone structure; Recovery end welds a butt tube, and the other end of butt tube is connected with a connecting rod, and the described connecting rod other end is carved with screw thread, and screw thread is carved with equally in one end of the corresponding connecting rod of extension rod, and mates with the screw thread of connecting rod; The invention provides while guaranteeing endovascular stent support force, can reclaim timely it, avoiding it that situation of restenosis occurs because being placed on Ink vessel transfusing formation thrombosis for a long time and cause blood vessel endothelium hypertrophy, guaranteeing therapeutic effect.
Description
Technical field
The present invention relates to a kind of support, specifically a kind of recoverable hepatic vein support, belongs to intervention technical field of medical equipment.
Background technology
Endovascular stent is a kind of metallicity eyelid retractor be placed in human vas, have and strut narrow blood vessel, ensure the unobstructed effect of regional flow, be used widely (as coronary stent clinically, carotid stents, arteria iliacofemoralis support, postcava support, hepatic vein support, iliac vein support etc.); Endovascular stent once put into internal blood vessel and just cannot take out, but due to endovascular stent be human body foreign body, easily form thrombosis and cause blood vessel endothelium hypertrophy and restenosis occurs for a long time, restenosis, once occur, is difficult to process.
Its structure of hepatic vein and shape are similar to dendroid, and by thin to slightly merging into trunk gradually, trunk proximal part diameter is greater than distal end, tapered cylindric; And the endovascular stent used at present is equal diameter cylindrical shape, stent diameter is satisfied with proximal part when needing, support distal end diameter is then obviously greater than hepatic vein diameter, is too expanded by generation support distal end thus and stimulates blood vessel endothelium hypertrophy and cause narrow generation.
Solve hepatic vein topic of corresponding again under normal circumstances and be divided into two kinds, one uses balloon expandable to treat, but because balloon expandable can only keep the squeezing action of several minutes local, sacculus is withdrawn and be there will be elastical retraction by expansion place hepatic vein and cannot reach satisfactory expansion ratio afterwards; Another kind of solution uses degradable support, but its material is almag, and support force is less, cannot ensure therapeutic effect.
Summary of the invention
For the problems referred to above, the invention provides a kind of recoverable hepatic vein support, while guaranteeing support support force, avoiding it that situation of restenosis occurs because being placed on Ink vessel transfusing formation thrombosis for a long time and cause blood vessel endothelium hypertrophy, guaranteeing therapeutic effect.
For achieving the above object, the invention provides a kind of recoverable hepatic vein support, comprise connect successively endovascular stent, butt tube, connecting rod, extension rod and conveying and recovery sheath pipe, conveying and reclaim sheath pipe and comprise inner core and trocar sheath;
Wherein, endovascular stent is made up of tinsel, and be self-expanding expansion support, length is 50mm-70mm; Tinsel is 6, is all obliquely installed, and two ends are gathered integral, and wherein recovery end stent diameter is greater than distal end diameter, overall in bicone structure;
Recovery end welds a butt tube, the other end of butt tube is connected with a connecting rod, the described connecting rod other end is carved with screw thread, connecting rod length is 40cm-60cm, screw thread is carved with equally in one end of the corresponding connecting rod of extension rod, and mate with the screw thread of connecting rod, extension rod length is 100cm-140cm.
Further, conveying and recovery sheath length of tube are less than extension rod and connecting rod length sum, are convenient to reclaim and release.
Further, trocar sheath end arranges haemostatic valve, effectively can stop blooding, prevent blood back flow.
Further, connecting rod and extension rod link are female thread or external screw thread, and extension rod is Corresponding matching with it, and this screw connection structure is convenient to connection tube and being connected to of extension rod is freed.
Further, butt tube and connecting rod are for being threaded or welding.
Preferably, blood vessel inner bracket material is rustless steel or Ultimum Ti.
Preferably, diameter wiry is 0.4mm-0.6mm, and endovascular stent diameter is 12mm-20mm.
Operation principle: when releasing intervene operation, through jugular vein indwelling sheath pipe, seal wire is inserted in hepatic vein, stent delivery sheath pipe is inserted to hepatic vein distal end place along seal wire, exit conveying and reclaim sheath pipe inner core and seal wire, endovascular stent is sent into sheath pipe distal end place through conveying and recovery sheath, according to pre-aligned mark, to 2/3 be positioned in hepatic vein before endovascular stent, rear 1/3 is positioned at postcava, fixed connecting rod and extension rod, retreat conveying and reclaim sheath pipe, after endovascular stent flicks, sheath pipe is exited external, fixed support connecting rod, rotating extension rod makes it depart from connecting rod, the connecting rod of low-necked venous indwelling sheath pipe outside is carried out sterile dressing,
Recovery stage: after endovascular stent places 2-3 a period of time in week in hepatic vein blood vessel, after finding that vessel inner blood circulation is smooth and easy by ultrasound observation, after extension rod is docked with connecting rod, insert conveying through extension rod, connecting rod and jugular vein indwelling sheath pipe and reclaim sheath pipe, conveying and recovery sheath pipe arrive support proximal part, fixing extension rod is also firmly pushed ahead conveying and is reclaimed sheath pipe to support and enters in recovery sheath pipe completely, fixing conveying and recovery sheath pipe, support is withdrawn out conveying and is reclaimed sheath pipe by extension rod of pulling back.
In conjunction with operation principle, the invention provides while guaranteeing endovascular stent support force, can reclaim timely it, avoid the situation that restenosis occurs because being placed on Ink vessel transfusing formation thrombosis for a long time and cause blood vessel endothelium hypertrophy for it, ensure that therapeutic effect.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the schematic enlarged-scale view located in Fig. 1;
Fig. 3 is the schematic enlarged-scale view located in Fig. 1.
In figure: 1, endovascular stent, 2, butt tube, 3, connecting rod, 4, extension rod, 5, inner core, 6, trocar sheath, 7, haemostatic valve.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention will be further described.
As shown in Figure 1, a kind of recoverable hepatic vein support, comprises the endovascular stent 1, connecting rod 3, extension rod 4 and the conveying that connect successively and reclaims sheath pipe, conveying and reclaim sheath pipe and comprise inner core 5 and trocar sheath 6;
Wherein, composition graphs 2 and Fig. 3: endovascular stent 1 is made up of tinsel, be self-expanding expansion support, length is 50mm-70mm; Tinsel is 6, is all obliquely installed, and two ends are gathered integral, and wherein recovery end stent diameter is greater than release end diameter, overall in bicone structure;
Recovery end welds a butt tube 2, the other end of butt tube 2 is connected with a connecting rod 3, described connecting rod 3 other end is carved with screw thread, connecting rod 3 length is 40cm-60cm, screw thread is carved with equally in one end of the corresponding connecting rod 3 of extension rod 4, and mate with the screw thread of connecting rod 3, extension rod 4 length is 100cm-140cm.
Further, conveying and recovery sheath length of tube are less than extension rod 4 and connecting rod 3 length sum, are convenient to conveying and the recovery of endovascular stent 1.
Further, trocar sheath 6 end arranges haemostatic valve 7, effectively can stop blooding, prevent blood back flow.
Preferably, connecting rod 3 and extension rod 4 link are female thread or external screw thread, and extension rod 4 Corresponding matching with it, multiple matching way, guarantees accurate docking.
Preferably, butt tube 2 and connecting rod 3, for being threaded or welding, have multiple connected mode.
Preferably, endovascular stent 1 material is rustless steel or Ultimum Ti, guarantees the support force of endovascular stent.
Preferably, diameter wiry is 0.4mm-0.6mm, and endovascular stent 1 diameter is 12mm-20mm, is applicable to human liver vein, guarantees therapeutic effect.
The release stage: when releasing intervene operation, through jugular vein indwelling sheath pipe, seal wire is inserted in hepatic vein, stent delivery sheath pipe is inserted to hepatic vein distal end place along seal wire, exit conveying and reclaim sheath pipe inner core 5 and seal wire, endovascular stent 1 to sheath pipe distal end place is sent into through conveying and recovery sheath, according to pre-aligned mark, to 2/3 be positioned in hepatic vein before endovascular stent 1, rear 1/3 is positioned at postcava, fixed connecting rod 3 and extension rod 4, retreat conveying and reclaim sheath pipe, after endovascular stent 1 flicks, conveying and recovery sheath pipe are exited external, fixed support connecting rod 3, rotating extension rod 4 makes it depart from connecting rod 3, the connecting rod 3 of low-necked venous indwelling sheath pipe outside is carried out sterile dressing,
Recovery stage: after endovascular stent 1 places 2-3 a period of time in week in hepatic vein blood vessel, after finding that vessel inner blood circulation is smooth and easy by ultrasound observation, after extension rod 4 is docked with connecting rod 3, insert conveying through extension rod 4, connecting rod 3 and jugular vein indwelling sheath pipe and reclaim sheath pipe, conveying and recovery sheath pipe arrive endovascular stent 1 proximal part, fixing extension rod 4 is also firmly pushed ahead conveying and is reclaimed sheath pipe to endovascular stent 1 and enters in recovery sheath pipe completely, fixing conveying and recovery sheath pipe, support is withdrawn out conveying and is reclaimed sheath pipe by extension rod 4 of pulling back.
In conjunction with operation principle, the invention provides while guaranteeing endovascular stent 1 support force, can reclaim timely it, avoid the situation that restenosis occurs because being placed on Ink vessel transfusing formation thrombosis for a long time and cause blood vessel endothelium hypertrophy for it, ensure that therapeutic effect, there is higher medical effect and market prospect.
Claims (7)
1. a recoverable hepatic vein support, comprises the endovascular stent (1), connecting rod (3), extension rod (4) and the conveying that connect successively and reclaims sheath pipe, conveying and reclaim sheath pipe and comprise inner core (5) and trocar sheath (6); It is characterized in that,
Wherein, endovascular stent (1) is made up of tinsel, and be self-expanding expansion support, length is 50mm-70mm; Tinsel is 6, is all obliquely installed, and two ends are gathered integral, and wherein recovery end stent diameter is greater than release end diameter, overall in bicone structure;
Recovery end welds a butt tube (2), the other end of butt tube (2) is connected with a connecting rod (3), described connecting rod (3) other end is carved with screw thread, connecting rod (3) length is 40cm-60cm, screw thread is carved with equally in one end of extension rod (4) corresponding connecting rod (3), and mate with the screw thread of connecting rod (3), extension rod (4) length is 100cm-140cm.
2. a kind of recoverable hepatic vein support according to claim 1, is characterized in that, described conveying and recovery sheath length of tube are less than extension rod (4) and connecting rod (3) length sum.
3. a kind of recoverable hepatic vein support according to claim 1, is characterized in that, described trocar sheath (6) end arranges haemostatic valve (7).
4. a kind of recoverable hepatic vein support according to claim 1 and 2, is characterized in that, described connecting rod (3) and extension rod (4) link are female thread or external screw thread, extension rod (4) Corresponding matching with it.
5. a kind of recoverable hepatic vein support according to claim 1 and 2, is characterized in that, described butt tube (2) and connecting rod (3) are for being threaded or welding.
6. a kind of recoverable hepatic vein support according to claim 1, is characterized in that, described endovascular stent (1) material is rustless steel or Ultimum Ti.
7. a kind of recoverable hepatic vein support according to claim 1, it is characterized in that, described diameter wiry is 0.4mm-0.6mm, and endovascular stent (1) diameter is 12mm-20mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410262662.6A CN104042372B (en) | 2014-06-13 | 2014-06-13 | A kind of recoverable hepatic vein support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410262662.6A CN104042372B (en) | 2014-06-13 | 2014-06-13 | A kind of recoverable hepatic vein support |
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| Publication Number | Publication Date |
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| CN104042372A CN104042372A (en) | 2014-09-17 |
| CN104042372B true CN104042372B (en) | 2016-01-27 |
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| CN201410262662.6A Expired - Fee Related CN104042372B (en) | 2014-06-13 | 2014-06-13 | A kind of recoverable hepatic vein support |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108309521B (en) * | 2018-02-11 | 2024-04-12 | 郑州大学第一附属医院 | Thrombus-preventing bracket device of ascites hepatic vein diversion controllable one-way valve |
| CN112674919B (en) * | 2020-12-25 | 2023-01-31 | 郑州美港高科生物科技有限公司 | Completely degradable magnesium alloy stent applied to lower limb arterial vascular lesions |
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| EP2739247B1 (en) * | 2011-08-05 | 2018-10-10 | California Institute of Technology | Percutaneous heart valve delivery systems |
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| CN201379672Y (en) * | 2009-04-10 | 2010-01-13 | 王涛 | Stent delivery device for interventional therapy |
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| CN101933855A (en) * | 2010-08-26 | 2011-01-05 | 先健科技(深圳)有限公司 | Recyclable vascular stent and recycling method thereof |
| CN202458791U (en) * | 2011-10-25 | 2012-10-03 | 张石江 | Recyclable blood vessel contracting rack with narrow intervention |
| CN102488577A (en) * | 2011-12-14 | 2012-06-13 | 湖南埃普特医疗器械有限公司 | Intravascular guiding wire positioning device and manufacturing method thereof |
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| CN104042372A (en) | 2014-09-17 |
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