CN102475556A - Vena cava cannula with umbrella-shaped ring - Google Patents
Vena cava cannula with umbrella-shaped ring Download PDFInfo
- Publication number
- CN102475556A CN102475556A CN2010105534454A CN201010553445A CN102475556A CN 102475556 A CN102475556 A CN 102475556A CN 2010105534454 A CN2010105534454 A CN 2010105534454A CN 201010553445 A CN201010553445 A CN 201010553445A CN 102475556 A CN102475556 A CN 102475556A
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- umbrella
- vena cava
- snare
- heart
- cannulation
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Abstract
An umbrella-shaped ring and a vena cava cannula are made of medical soft elastic silica gel in a bioengineering technology. Stopping surgical procedures of the vena cave due to adhesion among the free heart vena cava, the right atrium and the heart sac and the winding of the superior vena cava and the inferior vena cava are avoided in a heart operation, the problem that the vena cava is difficult to free and wind during a first heart operation is solved, vena cava blood is stopped inside the vena cava from flowing back to the right atrium during the heart operation, and thus, the operation is greatly simplified, the operation time is shortened, and complications and the death rate of the heart operation are reduced.
Description
Technical field
The invention belongs to medical instruments field, concrete relate to a kind of cannulation of venae cava with the umbrella snare.
Background technology
Along with the raising of department of cardiac surgery aggregate level, some patients repeatedly accept cardiac surgery operation possibly, like rescuing of complicated congenital heart disease by stages; Bypass surgery once more or repeatedly after the coronary atherosclerosis type heart disease row coronary bypass (bypass surgery): change lobe or the capable valve replacement postoperative of valvular heart disease after the mitral stenosis row enclosed dilatation once more and valve occurs and damage (damaging) and valve surgery related complication and need to go once more valve replacement surgery etc. like bioprosthetic valve.Oneself accepted operation to these patients owing to heart, and extensive adhesion, especially one caval vein place, atrium in the pericardial cavity perform the operation once more and need set up extracorporeal circulation.When setting up extracorporeal circulation, need free fully superior vena cava, postcava and right room so that superior vena cava, inferior vena cava cannula and cover band.Because upper and lower caval vein and the extensive adhesion in place, right room, need to separate and dissect with shears, the sharp property separation of electric knife+passivity, unusual effort, time-consuming, and,, possibly cause massive hemorrhage just in case break in above-mentioned position because of not setting up extracorporeal circulation, death is restrained very high.Often appear at when separating these positions the situation of people's injures and deaths in the clinical practice so atrium or trauma of vena cava and massive hemorrhage cause a disease. for a long time, reach repeatedly the preparation before the extracorporeal circulation of operation on heart once more, become a thorny and dangerous job.The technical scheme that the present invention adopted still is not reported both at home and abroad.
Summary of the invention
The present invention is directed to the deficiency of above-mentioned prior art, a kind of cannulation of venae cava with the umbrella snare is provided, can avoid extensively separating superior vena cava, postcava and right room.As long as can see right room, then cut an osculum in right room, the intubate of this novel zone circle cover is sent into right room after, further send into caval vein again.At this moment, thus the snare of umbrella can prop up caval vein inwall block venous blood in caval vein flow into right room.
The present invention is mainly used in and plans to implement the secondary or the patient of operation on heart repeatedly, and also can being used for superior vena cava, postcava, to go into right room short or thick and be difficult to free venacaval patient with operation.Cannulation of venae cava umbrella snare capable of using is implemented blocking-up in superior vena cava, postcava, thereby has avoided being the adhesion between the extensively free right room of blocking-up superior vena cava, postcava, epicoele nurse arteries and veins, postcava and the pericardium.
The cannulation of venae cava that cover falls in band divides two parts: the umbrella appearance snare of processing with soft elasticity medical silica-gel; Cannulation of venae cava.Two parts can be processed an integral body when producing, or produced by separation, are assembled as required on operating-table by the cardiac surgeon.Its operation principle is: its umbrella mouth of umbrella appearance snare is opened the distal end to intubate, in use, because the umbrella external diameter is greater than the caval vein internal diameter; And certain force of strain is arranged; When intubate gets into caval vein by right room, can in caval vein, prop up the intravenous wall, thus the backflow of block venous blood.Also can be after intubate, behind the blocking-up aorta, cut right room, with the opening direction of umbrella proximal part opisthotonos, make the umbrella opening to caval vein and block venous blood passes back into right room towards intubate.
The present invention compared with prior art has following advantage:
1, saved this operating procedure of adhesion that separates between right room, caval vein, the pericardium;
2, save free superior vena cava, postcava and cover blocking-up and be with this operating procedure.
Thereby farthest shortened operating time, greatly reduced the chance of heart and injury, reduced the danger of severe bleeding, reduced mortality rate.
Description of drawings
Fig. 1 collects zone circle cover cannulation of venae cava side-looking graphics
Wherein: 1.-umbrella appearance snare 2.-cannulation of venae cava;
The whole cutaway view in Fig. 2 side position;
Fig. 3 umbrella appearance snare side-looking graphics;
Fig. 4 umbrella appearance snare side sectional view;
Look whole zone circle cover cannulation of venae cava figure at the bottom of Fig. 5;
Fig. 6 overlooks whole zone circle cover cannulation of venae cava figure.
The specific embodiment
The cannulation of venae cava that cover falls in band divides two parts: the umbrella appearance snare of processing with soft elasticity medical silica-gel; Cannulation of venae cava.Two parts can be processed an integral body when producing, or produced by separation, are assembled as required on operating-table by the cardiac surgeon.Its operation principle is: its umbrella mouth of umbrella appearance snare is opened the distal end to intubate, in use, because the umbrella external diameter is greater than the caval vein internal diameter; And certain force of strain is arranged; When intubate gets into caval vein by right room, can in caval vein, prop up the intravenous wall, thus the backflow of block venous blood.Also can be after intubate, behind the blocking-up aorta, cut right room, with the opening direction of umbrella proximal part opisthotonos, make the umbrella opening to caval vein and block venous blood passes back into right room towards intubate.
Claims (3)
1. the cannulation of venae cava of band umbrella snare, it is characterized in that: this device is made up of umbrella appearance snare and intubate two parts, the umbrella mouth is opened to the intubate distal end, during use, owing to the umbrella external diameter greater than the caval vein internal diameter, thereby the block venous blood backflow.
2. according to the cannulation of venae cava according to the described band umbrella of claim 1 snare, it is characterized in that: occupation mode is that both available snare is directly blocked caval vein in caval vein, also can be with its folding inlet that covers caval vein to right room.
3. according to cannulation of venae cava, it is characterized in that this intubate and umbrella appearance snare thereof processed by soft elasticity medical silica-gel material according to claims 1 described band umbrella snares.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105534454A CN102475556A (en) | 2010-11-22 | 2010-11-22 | Vena cava cannula with umbrella-shaped ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105534454A CN102475556A (en) | 2010-11-22 | 2010-11-22 | Vena cava cannula with umbrella-shaped ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102475556A true CN102475556A (en) | 2012-05-30 |
Family
ID=46088418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105534454A Pending CN102475556A (en) | 2010-11-22 | 2010-11-22 | Vena cava cannula with umbrella-shaped ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102475556A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106075619A (en) * | 2016-08-26 | 2016-11-09 | 复旦大学附属中山医院 | A kind of Coronary vein blood flow drainage device |
| EP3586762A1 (en) | 2018-06-28 | 2020-01-01 | Medinice S.A. | Cannula for minimally invasive surgical tricuspid valve repair |
| EP3586900A1 (en) | 2018-06-28 | 2020-01-01 | Medinice S.A. | Cannula for minimally invasive surgical tricuspid valve repair |
-
2010
- 2010-11-22 CN CN2010105534454A patent/CN102475556A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106075619A (en) * | 2016-08-26 | 2016-11-09 | 复旦大学附属中山医院 | A kind of Coronary vein blood flow drainage device |
| EP3586762A1 (en) | 2018-06-28 | 2020-01-01 | Medinice S.A. | Cannula for minimally invasive surgical tricuspid valve repair |
| EP3586900A1 (en) | 2018-06-28 | 2020-01-01 | Medinice S.A. | Cannula for minimally invasive surgical tricuspid valve repair |
| US11577015B2 (en) | 2018-06-28 | 2023-02-14 | Medinice S.A. | Cannula for minimally invasive surgical tricuspid valve repair |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120530 |