CN2178532Y - Supplementary blood pump for left ventricle - Google Patents
Supplementary blood pump for left ventricle Download PDFInfo
- Publication number
- CN2178532Y CN2178532Y CN 93218637 CN93218637U CN2178532Y CN 2178532 Y CN2178532 Y CN 2178532Y CN 93218637 CN93218637 CN 93218637 CN 93218637 U CN93218637 U CN 93218637U CN 2178532 Y CN2178532 Y CN 2178532Y
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- blood
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- blood pump
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Abstract
The utility model provides an improved supplementary blood pump for a left ventricle, which is characterized in that a blood inlet is transversely arranged on a blood chamber in a tangential direction, a blood outlet inclines upwards and crosses the blood inlet in the tangential direction, and a spirally ascending blood flow is formed in the top center of the blood chamber. The utility model has favorable rheotropism and blood ejection function, efficiently solves the problems of turbulence, shearing, bumping, discontinuous flow, etc. of the existing blood pump, and thereby, thrombus can be prevented and reduced. The utility model is suitable for saving patients with heart failure.
Description
The present invention relates to a kind of cardiac treatment apparatus, particularly a kind of left heart auxiliary blood pump that is used to rescue the left heart failure patient.
For the serious depleted patient of heart, will face death, any medicine is rescued when invalid, give emergency treatment to a patient, unique method is to use a kind of auxiliary blood pump, and the blood of left atrium or left ventricle is extracted out, annotates in patient's Arterial system again, make the heart of patient's depletion can temporarily obtain to have a rest, progressively recover its function.Meanwhile, also guarantee each vitals of patient's whole body, can obtain sufficient arterial blood perfusion, the phenomenon of ischemia does not take place because of heart failure as brain, liver, kidney etc.In prior art, this pump structure as shown in Figure 1, it mainly is made up of air chamber (4), blood chamber (1) and the barrier film (2) that is arranged between two Room.On air chamber (4), be provided with air ports (3), on blood chamber (1), be provided with into blood mouth (5) and blood outlet (6).Its operation principle is such:, drag under barrier film (2) quilt when bleeding toward air chamber (4), blood outlet (6) valve (61) is closed, and goes into blood mouth (5) valve (51) and opens, and blood flows in the blood chamber (1) from going into blood mouth (5); When supplying gas, barrier film (2) is pushed to toward air chamber (4), goes into blood mouth (5) valve (51) this moment and closes, and blood outlet (6) valve (61) is opened, and blood flow penetrates from blood outlet (6).By bleeding and inflate toward air chamber (4) repeatedly, barrier film (2) just the cycle move up and down, the blood circulation of human body is kept in constantly blood drawing and blood supply.But existing blood pump often has such problem not to be well solved, and promptly is easy to generate thrombosis in the pump, causes quite a few patient to use the apoplexy that produces behind the blood pump in various degree, causes severe complications such as death or maimed person.Trace it to its cause and remain the blood pump unreasonable structure.The blood mouth (5) of going into of existing blood pump is inclined on the blood chamber (1), and blood outlet (6) then is arranged at the top of blood chamber (1) vertically.Though blood can rotate, because the gateway is in same plane, and in the end to end blood of the blood flow chamber (1), still can produce phenomenons such as turbulent flow, bump and blood flow be discontinuous in blood chamber (1); In addition, center, blood chamber (1) does not intercept, and blood flow flows in blood chamber (1) easily, forms short circuit or turbulent flow.Above-mentioned these phenomenons all are easy to generate thrombosis, and this is the deficiency of existing blood pump just.
The purpose of this utility model is to overcome the defective of existing blood pump, provides a kind of and avoids or reduce thrombotic left ventricular assist pump.
Above-mentioned task is achieved in that as shown in Figures 2 and 3, this pump is same as the prior art, include blood chamber (1), go into blood mouth (5), blood outlet (6), barrier film (2), air chamber (4) and air gateway (3), its difference is that blood mouth (5) tangentially is horizontally placed on the blood chamber (1), blood outlet (6) tangentially is tilted to and is across on the blood mouth (5), and top center is provided with a sphere pit (7) in blood chamber (1).
Operation principle of the present utility model is the same with prior art, but through after the above-mentioned improvement, blood flow suffers restraints, only form blood flow on the screw naturally with the circular configuration of blood pump (1), therefore its gateway blood flow does not join in blood chamber (1), can prevent turbulent flow, shearing, bump effectively and the phenomenon such as discontinuous that flows takes place.Through in the simulation loop platform, showing the fluidised form that vertical method is observed this blood pump with granule, whole blood flow is streamlined to carry out continuously, non-cracking or discontinuous phenomenon, do not see that turbulent flow and blood stay the district yet, present good following current and penetrate the blood function, and make blood fully wash the edge of the whole pump housing, overcome the deficiency that has blood pump more effectively, stop and reduce the generation of thrombosis, avoid causing severe complications such as apoplexy.
Fig. 1 is the structural representation of existing left heart auxiliary blood pump.
Fig. 2 is the partial sectional view of a kind of concrete structure of this utility model.
Fig. 3 is the vertical view of Fig. 2.
When implementing this utility model, go into blood mouth (5) and horizontal angle to be not more than 15 ° for well, blood outlet (6) is preferably 30 °～60 ° with horizontal angle, go into angle between blood mouth (5) and the blood outlet (6) with 30～60 ° for well, exceed above-mentioned scope, this blood pump performance reduces, and following current is poor, turbulent flow might occur, produce thrombosis.When using this blood pump to make over a long time the assist circulation turn of tidal stream, can adopt no support pig lobe to replace the support pig lobe that has commonly used to make valve, can obtain anticoagulation function preferably, reduce the formation of thrombosis, if when using this blood pump to make the cardiopulmonary bypass surgery of short-term, can adopt wheel lobe relatively simple for structure.This utility model is made by epoxy resin, and inwall scribbles the polyurethane thin layer in blood chamber (1), makes the unlikely contact pressure resin of blood.Barrier film (2) adopts polyurethane to make.
This utility model is suitable for rescuing the left heart failure patient who faces death to be used.
Claims (4)
1, a kind of left heart auxiliary blood pump, include blood chamber (1), go into blood mouth (5), blood outlet (6), barrier film (2), air chamber (4) and air gateway (3), it is characterized in that blood mouth (5) tangentially is horizontally placed on the blood chamber (1), blood outlet (6) tangentially is tilted to and is across on the blood mouth (5), and top center is provided with a sphere pit (7) in blood chamber (1).
2, auxiliary blood pump according to claim 1 is characterized in that into blood mouth (5) and horizontal angle to be not more than 15 ° for well.
3, auxiliary blood pump according to claim 1 is characterized in that blood outlet (6) and horizontal angle are preferably 30 °～60 °.
4, auxiliary blood pump according to claim 1, it is characterized in that angle between blood mouth (5) and the blood outlet (6) with 30～60 ° for well.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93218637 CN2178532Y (en) | 1993-07-13 | 1993-07-13 | Supplementary blood pump for left ventricle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93218637 CN2178532Y (en) | 1993-07-13 | 1993-07-13 | Supplementary blood pump for left ventricle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2178532Y true CN2178532Y (en) | 1994-10-05 |
Family
ID=33798246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93218637 Expired - Fee Related CN2178532Y (en) | 1993-07-13 | 1993-07-13 | Supplementary blood pump for left ventricle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2178532Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103316386A (en) * | 2013-05-31 | 2013-09-25 | 上海交通大学 | Blood inlet-outlet branch vessel intersected type artificial heart system |
| CN103330963A (en) * | 2013-05-31 | 2013-10-02 | 上海交通大学 | Blood pressure self-adaptive artificial heart system |
| CN103394137A (en) * | 2013-07-18 | 2013-11-20 | 上海交通大学 | Artificial heart system with double blood incoming branch tubes |
| CN103394136A (en) * | 2013-07-18 | 2013-11-20 | 上海交通大学 | Artificial heart system with double blood outgoing branch tubes |
| CN107648690A (en) * | 2016-07-26 | 2018-02-02 | 广东省心血管病研究所 | Chamber lung auxiliary circulating equipment |
-
1993
- 1993-07-13 CN CN 93218637 patent/CN2178532Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103316386A (en) * | 2013-05-31 | 2013-09-25 | 上海交通大学 | Blood inlet-outlet branch vessel intersected type artificial heart system |
| CN103330963A (en) * | 2013-05-31 | 2013-10-02 | 上海交通大学 | Blood pressure self-adaptive artificial heart system |
| CN103330963B (en) * | 2013-05-31 | 2015-06-03 | 上海交通大学 | Blood pressure self-adaptive artificial heart system |
| CN103316386B (en) * | 2013-05-31 | 2015-09-09 | 上海市浦东医院 | Turnover blood arm staggered form artificial heart system |
| CN103394137A (en) * | 2013-07-18 | 2013-11-20 | 上海交通大学 | Artificial heart system with double blood incoming branch tubes |
| CN103394136A (en) * | 2013-07-18 | 2013-11-20 | 上海交通大学 | Artificial heart system with double blood outgoing branch tubes |
| CN103394137B (en) * | 2013-07-18 | 2015-12-23 | 上海交通大学 | With two enter the artificial heart system of blood arm |
| CN107648690A (en) * | 2016-07-26 | 2018-02-02 | 广东省心血管病研究所 | Chamber lung auxiliary circulating equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |