CN102284091A - Left ventricle assist device - Google Patents
Left ventricle assist device Download PDFInfo
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- CN102284091A CN102284091A CN2011101623631A CN201110162363A CN102284091A CN 102284091 A CN102284091 A CN 102284091A CN 2011101623631 A CN2011101623631 A CN 2011101623631A CN 201110162363 A CN201110162363 A CN 201110162363A CN 102284091 A CN102284091 A CN 102284091A
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Abstract
The invention discloses a novel left ventricle assist device, and aims to provide periodical pulsation assist blood pumping which is close to the physiological state for a patient suffering from heart failure. The left ventricle assist device comprises a blood pump, an article blood vessel, a power supply and control part, and a power supply and control wire. The blood pump is a valve-free impedance blood pump; the middle section of a blood pump pipeline is an elastic tube; and the two ends of the elastic tube are connected with rigid tubes which have the same tube diameters. A periodical compression part which is arranged deflected from the axial center position of the elastic pipe in the blood pump periodically compresses the elastic tube so as to produce blood flow driving power; therefore, the function of blood pumping is realized.
Description
Technical field
The present invention relates to a kind of left heart auxiliary device.
Background technology
Heart disease is the healthy diseases of a kind of serious threat mankind (particularly old people), and wherein myocardial failure (Heart failure) is a main cause.At present, cardiac transplantation is a kind of scheme of operative treatment preferably, and 1 year survival rate of postoperative reaches 93%, and 5 years survival rates of postoperative reach 88%.But heart transplantation donor famine, so people place hope on artificial heart and the artificial auxiliary device of various implanted.
Left side heart auxiliary device is a kind of typical heart assistance blood supply device, and this device one end connects left ventricle, and the other end connects aorta, during work the arterial blood in the left ventricle is directly pumped into aorta.Existing left heart auxiliary device mainly contains two types: a kind of is axial-flow type (Rotary blood pumps), promptly utilizes the rotation of external force drives impeller or pump shaft base part to finish blood-pumping function.Another kind of is compression volume formula (Volume-displacement pumps), and this type is to cooperate change in volume and valve folding to finish blood-pumping function.This left heart auxiliary device of two types has all been developed commercial product and has been applied to clinical.But above-mentioned two types all have its inherent defective:
For the left heart auxiliary device of axial-flow type (Rotary blood pumps), the lasting rotation of impeller or pump shaft base part can produce stable blood flow, weakens the pulse characteristic that heart pump goes out blood flow greatly.Though the weakening of blood flow pulse characteristic can produce still the question in dispute clinically of what kind of influence to the organ of being accustomed to normal physiological pulsation blood supply already and tissue, a large amount of experimental results proved blood flow pulse characteristic weakening meeting to vascular cell physiological property and organ, organize blood supply to have a negative impact.In addition, the local high shear force that impeller or the rotation of pump shaft base part produce very easily destroys the blood cell integrity, and causes platelet activation and thrombosis.
For the left heart auxiliary device of compression volume formula (Volume-displacement pumps), though can produce the blood flow of cyclic fluctuation, but blood flow disorder still can take place in the valve place, follows bad hemodynamics incidents such as whirlpool, high shear force, low-shearing force.The defective of its consequence and axial-flow type left side heart auxiliary device second aspect is similar.
Summary of the invention
Purpose of the present invention is exactly the deficiency that exists at existing left heart auxiliary device, utilizes the principle of valveless impedance type pump, proposes the left heart auxiliary device of a kind of pulsation, no valve, and better auxiliary blood-pumping function is provided.
In order to solve the problems of the technologies described above, the present invention is achieved by the following technical solutions: a kind of left heart auxiliary device, it comprises blood pump, artificial blood vessel, power supply and control assembly and power supply and pilot.Wherein, blood pump is no lobe impedance type blood pump.
No valve in the no lobe impedance type blood pump, the blood pump tubing interlude is an elastic tube, the elastic tube two ends connect the rigid pipe with caliber respectively.Do not have lobe impedance type blood pump intercycle compression member during work elastic tube is carried out periodic compression, the compression position is positioned at the elastic tube outside but departs from the axial centre position of elastic tube, the periodic compression parts can be arranged 1, also can arrange 2～3 that distribute along elastic tube compression unit circle of position week.In the time of the close connection in the suffered compression of elastic tube position ventricle one end, under the periodic compression effect, will produce from ventricular side to aorta side periodically pulsing blood flow.
Pass through technique scheme, after implant into body of the present invention, can accessory heart from left ventricle to the direct pump blood of aorta, and the blood flow that pumps is pulsating nature, bad hemodynamics incidents such as whirlpool, high shear force, low-shearing force be difficult for to take place, and pump more the pulsatile blood flow near physiological property that is:.Utilize the present invention, can improve the heart assisting blood pumping situation of patients with heart failure better.
Description of drawings
Fig. 1 is the location drawing behind the implant into body of the present invention;
Fig. 2 is an internal structure sketch map of the present invention;
Among the figure: 1 connects left ventricle and aortal artificial blood vessel; 2 no lobe impedance type blood pumps; 3 power supplys and pilot; 4 power supplys and control assembly; 5 flow out the section rigid pipe; 6 elastic tubes; 7 shells; 8 periodic compression parts; 9 inflow segment rigid pipes.
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is described in further detail:
As shown in Figure 1, patent of the present invention is made up of four parts: blood pump 2, artificial blood vessel 1, power supply and control assembly 3 and power supply and pilot 4.Wherein, blood pump is no lobe impedance type blood pump.Artificial blood vessel is used for blood pump is linked to each other respectively with aorta with left ventricle.In the time of the close connection in the 6 suffered compression positions of elastic tube in blood pump ventricle one end, under the periodic compression effect, will produce from ventricular side to aorta side periodically pulsing blood flow.The principle of this pump blood mode is: the centre of two sections rigid pipes is connected by one section elastic tube, and the caliber of these three sections pipes is identical.When to departing from elastic tube 6 axial middle parts when carrying out periodic compression, it is poor that the elastic tube two ends will produce certain blood stream pressure, impels blood flow to flow.The nearer end in position is a near-end if definition elastic tube tripping contracts, and the tripping position end far away that contracts is a far-end, and then the flow direction of blood flow is to the elastic tube far-end from the elastic tube proximal flow.It is that electromagnetic drive mode, pneumatic actuation mode in 200510047820.7 patents or other can produce type of drive controlled, periodic compression that the periodic compression parts 8 that elastic tube 6 is applied the periodic compression effect can adopt application number.Compression member can be arranged 1, also can arrange 2～3 that distribute along elastic tube compression unit circle of position week.Power supply and control assembly 3 are positioned at external, for the invention provides power supply and control.Power supply and pilot 3 pass human body skin, connect interior no lobe impedance type pump 2 of implant into body and external power supply and control assembly 4.
The elastic tube 6 of no lobe impedance type blood pump 2 and periodic compression parts 8 are included in the shell 7, and two sections rigid pipes 5 and 9 stride across shell 7.After being connected artificial blood vessel 1, the part that rigid pipe 5 and 9 is stepped out shell 7 is connected with left ventricle and aorta respectively.This patent implant into body inside and the part that contacts with blood of human body, tissue all adopt the material of good biocompatibility.
The left heart auxiliary device that the present invention is proposed carries out the heart assistance blood supply to heart failure (Heart Failure) patient, can in aorta, carry more periodically pulsing blood flow, in pump blood process, be difficult for taking place bad hemodynamics incidents such as whirlpool, high shear force, low-shearing force simultaneously near physiological status.
Claims (3)
1. left heart auxiliary device, it comprises blood pump (2), artificial blood vessel (1), power supply and control assembly (4) and power supply and pilot (3), it is characterized in that described blood pump (2) is no lobe impedance type blood pump.
2. left heart auxiliary device according to claim 1 is characterized in that, no valve in the described no lobe impedance type blood pump (2), and the blood pump tubing interlude is elastic tube (6), elastic tube (6) two ends connect the rigid pipe (5,9) with caliber respectively.
3. left heart auxiliary device according to claim 1, it is characterized in that, the compression position of described no lobe impedance type blood pump (2) intercycle compression member (8) is positioned at elastic tube (6) outside but departs from the axial centre position of elastic tube, periodic compression parts (8) can be arranged 1, also can arrange 2～3 that distribute along elastic tube (6) compression unit circle of position week.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101623631A CN102284091A (en) | 2011-06-16 | 2011-06-16 | Left ventricle assist device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101623631A CN102284091A (en) | 2011-06-16 | 2011-06-16 | Left ventricle assist device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102284091A true CN102284091A (en) | 2011-12-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101623631A Pending CN102284091A (en) | 2011-06-16 | 2011-06-16 | Left ventricle assist device |
Country Status (1)
| Country | Link |
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| CN (1) | CN102284091A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105688297A (en) * | 2014-11-25 | 2016-06-22 | 中国科学院沈阳自动化研究所 | External-valve pulsating type blood pump |
| CN107530480A (en) * | 2015-04-30 | 2018-01-02 | Ecp发展有限责任公司 | Rotor and its manufacture method and mould for fluid pump |
| CN111840682A (en) * | 2020-07-28 | 2020-10-30 | 云南省阜外心血管病医院 | Blood pump beneficial to improving coronary blood supply |
| CN112423831A (en) * | 2018-02-20 | 2021-02-26 | 秋心医疗护理有限公司 | Collapsible adjustable vascular treatment device, independently and dynamically controlled chargeable and dischargeable advanced cuff for blood vessels or capsule walls and the like, and electrocardiographic assistance device |
| CN113368388A (en) * | 2021-06-21 | 2021-09-10 | 内蒙古工业大学 | Left ventricle auxiliary pulsation type blood pump |
| CN114917460A (en) * | 2022-06-09 | 2022-08-19 | 江苏理工学院 | Tissue strutting arrangement that resets |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4250872A (en) * | 1978-05-25 | 1981-02-17 | Yehuda Tamari | Blood pulsating and/or pumping device |
| CN2613267Y (en) * | 2003-04-10 | 2004-04-28 | 阎思俊 | Pulsation type extracorporeal blood pump |
| CN1775314A (en) * | 2005-11-25 | 2006-05-24 | 沈阳工业大学 | Magnetic controlled valveless pulsate blood pump |
| CN101745156A (en) * | 2008-12-05 | 2010-06-23 | 上海交通大学医学院附属瑞金医院 | Pulsating double-bag heart auxiliary circulation device |
-
2011
- 2011-06-16 CN CN2011101623631A patent/CN102284091A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4250872A (en) * | 1978-05-25 | 1981-02-17 | Yehuda Tamari | Blood pulsating and/or pumping device |
| CN2613267Y (en) * | 2003-04-10 | 2004-04-28 | 阎思俊 | Pulsation type extracorporeal blood pump |
| CN1775314A (en) * | 2005-11-25 | 2006-05-24 | 沈阳工业大学 | Magnetic controlled valveless pulsate blood pump |
| CN101745156A (en) * | 2008-12-05 | 2010-06-23 | 上海交通大学医学院附属瑞金医院 | Pulsating double-bag heart auxiliary circulation device |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105688297A (en) * | 2014-11-25 | 2016-06-22 | 中国科学院沈阳自动化研究所 | External-valve pulsating type blood pump |
| CN107530480A (en) * | 2015-04-30 | 2018-01-02 | Ecp发展有限责任公司 | Rotor and its manufacture method and mould for fluid pump |
| CN107530480B (en) * | 2015-04-30 | 2022-03-08 | Ecp发展有限责任公司 | Rotor for fluid pump, method of manufacturing the same, and mold |
| CN112423831A (en) * | 2018-02-20 | 2021-02-26 | 秋心医疗护理有限公司 | Collapsible adjustable vascular treatment device, independently and dynamically controlled chargeable and dischargeable advanced cuff for blood vessels or capsule walls and the like, and electrocardiographic assistance device |
| CN112423831B (en) * | 2018-02-20 | 2024-03-08 | 启心医疗护理有限公司 | Collapsible adjustable vascular treatment device, independently and dynamically controllable charging and discharging advanced cuffs for vessels or walls and the like, and electrocardiographic aid |
| CN111840682A (en) * | 2020-07-28 | 2020-10-30 | 云南省阜外心血管病医院 | Blood pump beneficial to improving coronary blood supply |
| CN113368388A (en) * | 2021-06-21 | 2021-09-10 | 内蒙古工业大学 | Left ventricle auxiliary pulsation type blood pump |
| CN114917460A (en) * | 2022-06-09 | 2022-08-19 | 江苏理工学院 | Tissue strutting arrangement that resets |
| CN114917460B (en) * | 2022-06-09 | 2023-07-04 | 江苏理工学院 | Tissue reduction supporting device |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Application publication date: 20111221 |