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Artificial cardiac valve pump

An artificial heart and heart valve technology, applied in the field of medical devices, can solve problems such as thrombosis, anatomical space occupation, and blood circulation system interference, and achieve the effect of preventing blood backflow, prolonging the increase time, and increasing blood pressure

Inactive Publication Date: 2005-01-05
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Artificial valves can replace failed natural heart valves, prevent blood from flowing backwards, keep blood flowing in one direction and unobstructed, and have a long survival period (decades); , causing stagnation points and vortices in the blood, which are likely to cause thrombosis; artificial heart pumps can assist the failing myocardium to complete the pumping function, but generally require additional anatomical space and interfere with the natural blood circulation system

Method used

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  • Artificial cardiac valve pump

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Embodiment Construction

[0013] Such as figure 1 As shown, the device adopts the same shape and size as a heart valve and consists of a rotor and a stator. The stator includes a coil and an iron core 1, and the stator is provided with a guide vane 4 at the exit position; the rotor is composed of a magnetic steel 2 and an impeller 3, and the impeller 3 is made of ferromagnetic materials, and it also functions as a magnetic circuit. When the coil is energized, the rotor rotates, driving the blood to rotate and flow axially, as shown by the arrow in the figure. The function of guide vane 4 is to eliminate the rotational component of blood flow and reduce the damage of blood.

[0014] In the embodiment of the present invention, the entire device weighs 40 grams, including 11 grams of rotor; the maximum outer diameter is 24.7 mm, and the length is 12.7 mm. In the diastolic period of the natural ventricle, the rotational speed needs to be 1500 rpm to maintain the aortic pressure of 80 mmHg; During natural...

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Abstract

An artificial cardiac valve pump for helping the failing heart by installing it in the heart is coposed of the rotor consisting of magnetic steel and blade wheel made of ferromagnetic material and the stator consisting of coil, iron core and guide blade at output position. Its shape and volume are same as those of natural valve.

Description

Technical field [0001] The invention relates to the field of medical devices, in particular to an artificial heart valve pump, which is mainly used to assist a failing heart to maintain normal blood circulation. Background technique [0002] The artificial heart valves and artificial heart pumps currently used clinically have their own shortcomings and advantages. Artificial valves can replace failed natural heart valves, prevent blood from flowing backwards, keep blood flowing in one direction and unobstructed, and have a long survival period (decades); , causing stagnation points and vortices in the blood, which can easily cause thrombus formation; artificial heart pumps can assist the failing myocardium to complete the pumping function, but generally require additional anatomical space and interfere with the natural blood circulation system. Contents of the invention [0003] The purpose of the present invention is to provide an artificial heart valve pump, which is a ...

Claims

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Application Information

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IPC IPC(8): A61F2/02A61F2/24A61M1/10
Inventor 钱坤喜
Owner JIANGSU UNIV
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