CN104042372A - Recoverable hepatic vein support - Google Patents
Recoverable hepatic vein support Download PDFInfo
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- CN104042372A CN104042372A CN201410262662.6A CN201410262662A CN104042372A CN 104042372 A CN104042372 A CN 104042372A CN 201410262662 A CN201410262662 A CN 201410262662A CN 104042372 A CN104042372 A CN 104042372A
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- connecting rod
- endovascular stent
- recoverable
- hepatic vein
- extension rod
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Abstract
The invention discloses a recoverable hepatic vein support, which belongs to the technical field of intervention medical equipment. The recoverable hepatic vein support comprises an endovascular stent, a connecting rod, an extension rod and a delivery and recycling sheathing canal which are sequentially connected, wherein the endovascular stent is formed by metal wires and is a self-expanding support, the length of the endovascular stent is 50-70mm, the number of the metal wires is 6, the metal wires are obliquely arranged, two ends of the metal wires are gathered into a whole, the diameter of the recovering end is greater than that of the releasing end, the endovascular stent is integrally of a bipyramid structure, the recovering end is welded with a docking pipe, the other end of the docking pipe is connected with the connecting rod, the other end of the connecting rod is engraved with threads, and one end, corresponding to the connecting rod, of the extension rod is also engraved with threads which are matched with the threads of the connecting rod. While supporting force of the endovascular stent is ensured, the endovascular stent can be recovered in time, so that the condition that since the endovascular stent is placed in the blood vessel for a long time, thrombus is formed, and restenosis occurs due to the fact that blood vessel endothelium hyperplasia is caused can be avoided, and the treatment effect is ensured.
Description
Technical field
The present invention relates to a kind of support, specifically a kind of recoverable hepatic vein support, belongs to and gets involved armarium technical field.
Background technology
Endovascular stent is a kind of metallicity eyelid retractor being placed in human vas, there is narrow blood vessel, the unobstructed effect of guarantee regional flow of strutting, be used widely clinically (as coronary stent, carotid stents, arteria iliacofemoralis support, postcava support, hepatic vein support, iliac vein support etc.); Once endovascular stent is put into internal blood vessel and just cannot be taken out, but because endovascular stent is human body foreign body, there is restenosis with causing blood vessel endothelium hypertrophy in the long-time thrombosis that easily forms, once restenosis occurs, is difficult to process.
Its structure of hepatic vein and shape are similar to dendroid, and by carefully, to slightly merging into gradually trunk, trunk proximal part diameter is greater than distal end, tapered cylindric; And the endovascular stent using at present for equal diameter cylindric, when stent diameter is satisfied with proximal part and is needed, support distal end diameter is obviously greater than hepatic vein diameter, thus generation support distal end is too expanded and stimulates blood vessel endothelium hypertrophy and cause narrow generation.
Solve under normal circumstances hepatic vein correspond again topic be divided into two kinds, one is to use balloon expandable to treat, but because balloon expandable can only keep several minutes local squeezing actions, sacculus is withdrawn and be there will be elastical retraction and cannot reach satisfactory expansion ratio by expansion place hepatic vein afterwards; Another kind of solution is to use 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, in guaranteeing bracket leg support force, avoid it to form thrombosis and cause that the situation of restenosis occurs blood vessel endothelium hypertrophy, guarantees therapeutic effect because being placed on for a long time in blood vessel.
For achieving the above object, the invention provides a kind of recoverable hepatic vein support, comprise endovascular stent, butt tube, connecting rod, extension rod and the conveying and the recovery sheath pipe that connect successively, carry and reclaim sheath pipe to comprise inner core and trocar sheath;
Wherein, endovascular stent is made up of tinsel, is self-expanding expansion support, and 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, and entirety is bicone structure;
A butt tube of recovery end welding, 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, one end of the corresponding connecting rod of extension rod is carved with screw thread equally, and mate with the screw thread of connecting rod, extension rod length is 100cm-140cm.
Further, carry and reclaim sheath length to be less than extension rod and connecting rod length sum, be convenient to reclaim and discharge.
Further, trocar sheath end arranges haemostatic valve, can effectively stop blooding, and prevents 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 being connected in of connection tube and extension rod and is freed.
Further, butt tube with connecting rod 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: while releasing intervene operation, through jugular vein indwelling sheath pipe, seal wire is inserted in hepatic vein, insert stent delivery sheath pipe to hepatic vein distal end place along seal wire, exit and carry and reclaim sheath pipe inner core and seal wire, through carrying and reclaiming sheath and send into endovascular stent to sheath pipe distal end place, according to pre-aligned mark, to before endovascular stent, 2/3 be positioned in hepatic vein, rear 1/3 is positioned at postcava, fixed connecting rod and extension rod, retreat and carry and reclaim sheath pipe, after endovascular stent flicks, sheath pipe is exited external, fixed support connecting rod, rotation extension rod makes it depart from connecting rod, the connecting rod of low-necked venous indwelling sheath pipe outside is carried out to sterile dressing,
Recovery stage: endovascular stent was placed after 2-3 a period of time in week in hepatic vein blood vessel, after finding that by ultrasound observation vessel inner blood circulation is smooth and easy, after extension rod is docked with connecting rod, insert and carry and reclaim sheath pipe through extension rod, connecting rod and jugular vein indwelling sheath pipe, carry and reclaim sheath pipe and arrive support proximal part, fixing extension rod is also firmly pushed ahead to carry and reclaim sheath pipe to support and is entered completely in recovery sheath pipe, fixing conveying and recovery sheath pipe, the extension rod of pulling back is withdrawn out support conveying and is reclaimed sheath pipe.
In conjunction with operation principle, the invention provides in guaranteeing endovascular stent support force, can reclaim timely it, avoid it to form thrombosis and cause that the situation of restenosis occurs blood vessel endothelium hypertrophy, has guaranteed therapeutic effect because being placed on for a long time in blood vessel.
Brief description of the drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is in Fig. 1
the structure enlarged drawing at place;
Fig. 3 is in Fig. 1
the structure enlarged drawing at place.
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 endovascular stent 1, connecting rod 3, the extension rod 4 connecting successively and carries and reclaim sheath pipe, carries and reclaim sheath pipe to comprise inner core 5 and trocar sheath 6;
Wherein, in conjunction with Fig. 2 and Fig. 3: endovascular stent 1 is made up of tinsel, is self-expanding expansion support, and 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, and entirety is bicone structure;
A butt tube 2 of recovery end welding, the other end of butt tube 2 is connected with a connecting rod 3, described connecting rod 3 other ends are carved with screw thread, connecting rod 3 length are 40cm-60cm, one end of the corresponding connecting rod 3 of extension rod 4 is carved with screw thread equally, and mate with the screw thread of connecting rod 3, extension rod 3 length are 100cm-140cm.
Further, carry and reclaim sheath length to be less than extension rod 4 and connecting rod 3 length sums, be convenient to conveying and the recovery of endovascular stent 1.
Further, trocar sheath 6 ends arrange haemostatic valve 7, can effectively stop blooding, and prevent blood back flow.
Preferably, connecting rod 3 is female thread or external screw thread with extension rod 4 links, extension rod 4 Corresponding matching with it, and multiple matching way, guarantees accurate docking.
Preferably, butt tube 2 for being threaded or welding, has multiple connected mode with connecting rod 3.
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: while releasing intervene operation, through jugular vein indwelling sheath pipe, seal wire is inserted in hepatic vein, insert stent delivery sheath pipe to hepatic vein distal end place along seal wire, exit and carry and reclaim sheath pipe inner core 5 and seal wire, through carrying and reclaiming sheath and send into endovascular stent 1 to sheath pipe distal end place, according to pre-aligned mark, be positioned in hepatic vein front endovascular stent 1 2/3, rear 1/3 is positioned at postcava, fixed connecting rod 3 and extension rod 4, retreat and carry and reclaim sheath pipe, after endovascular stent 1 flicks, conveying and recovery sheath pipe are exited external, fixed support connecting rod 3, rotation 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 to sterile dressing,
Recovery stage: endovascular stent 1 was placed after 2-3 a period of time in week in hepatic vein blood vessel, after finding that by ultrasound observation vessel inner blood circulation is smooth and easy, after extension rod 4 is docked with connecting rod 3, insert and carry and reclaim sheath pipe through extension rod 4, connecting rod 3 and jugular vein indwelling sheath pipe, carry and reclaim sheath pipe and arrive endovascular stent 1 proximal part, fixing extension rod 4 is also firmly pushed ahead to carry and reclaim sheath pipe to endovascular stent 1 and is entered completely in recovery sheath pipe, fixing conveying and recovery sheath pipe, the extension rod 4 of pulling back is withdrawn out support conveying and is reclaimed sheath pipe.
In conjunction with operation principle, the invention provides in guaranteeing endovascular stent 1 support force, can reclaim timely it, avoid it to form thrombosis and cause that the situation of restenosis occurs blood vessel endothelium hypertrophy because being placed on for a long time in blood vessel, guarantee therapeutic effect, there is higher medical effect and market prospect.
Claims (7)
1. a recoverable hepatic vein support, comprises endovascular stent (1), connecting rod (3), the extension rod (4) connecting successively and carries and reclaim sheath pipe, carries and reclaim sheath pipe to comprise inner core (5) and trocar sheath (6); It is characterized in that,
Wherein, endovascular stent (1) is made up of tinsel, is self-expanding expansion support, and 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, and entirety is bicone structure;
A recovery end butt tube of welding (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, one end of the corresponding connecting rod of extension rod (4) (3) is carved with screw thread equally, and mate with the screw thread of connecting rod (3), extension rod (3) 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 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) is female thread or external screw thread with extension rod (4) link, 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) with connecting rod (3) 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, 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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104042372A true CN104042372A (en) | 2014-09-17 |
| CN104042372B 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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Cited By (2)
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| CN108309521A (en) * | 2018-02-11 | 2018-07-24 | 郑州大学第附属医院 | A kind of novel ascitic vena hepatica turn of tidal stream controllable check valve preventing thrombosis holder device |
| CN112674919A (en) * | 2020-12-25 | 2021-04-20 | 李荣福 | Completely degradable magnesium alloy stent applied to lower limb arterial vascular lesions |
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2014
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| CN108309521A (en) * | 2018-02-11 | 2018-07-24 | 郑州大学第附属医院 | A kind of novel ascitic vena hepatica turn of tidal stream controllable check valve preventing thrombosis holder device |
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| CN112674919A (en) * | 2020-12-25 | 2021-04-20 | 李荣福 | Completely degradable magnesium alloy stent applied to lower limb arterial vascular lesions |
| 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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| Publication number | Publication date |
|---|---|
| CN104042372B (en) | 2016-01-27 |
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Granted publication date: 20160127 Termination date: 20180613 |