Single-chamber reciprocating blood pump with magnetic and elastic linkage

A reciprocating and elastic technology, applied in the field of medical blood pumps, can solve problems such as organ damage, and achieve the effects of reducing damage, excellent biocompatibility, and increasing stability

Active Publication Date: 2019-05-24
UNIV OF SHANGHAI FOR SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with the roller pressure type, the centrifugal type reduces the hemolysis of the blood, but the damage to the blood cannot be ignored, and the blood is continuously pumped out when the centrifugal pump is working, which is inconsistent with the pulsating pumping of the natural heart. organ damage

Method used

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  • Single-chamber reciprocating blood pump with magnetic and elastic linkage
  • Single-chamber reciprocating blood pump with magnetic and elastic linkage
  • Single-chamber reciprocating blood pump with magnetic and elastic linkage

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Embodiment Construction

[0023] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further elaborated below in conjunction with illustrations and specific embodiments.

[0024] Such as Figure 1 to Figure 4 As shown, the present invention proposes a single-chamber reciprocating blood pump linked by magnetic force and elastic force, including a pump body, which is in the shape of a barrel. Made of corrugated hose, the corrugated hose is made of medical soft polymer material with good biocompatibility, and the storage chamber 3 has symmetrical blood inlet 5 and blood outlet 6 on the side away from the inner cavity of the pump A nickel-titanium memory alloy metal wire is fixed in the interlayer of the corrugated hose, and the metal wire is located at the protruding edge of the hose when it shrinks, and does not directly contact with the blood, which increases the rigidity of the corrugated hose in ...

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Abstract

The invention discloses a single-chamber reciprocating blood pump with magnetic and elastic linkage. The technical scheme includes that the single-chamber reciprocating blood pump with magnetic and elastic linkage comprises a pump body, a storage cavity for blood storage is arranged in the pump body, the storage cavity gets larger or smaller with the change of compression, the pump body is externally coated and wound with a conductive coil, a magnet sliding along the lengthwise direction of the pump body is arranged in the inner cavity of the pump body, one end of the magnet is connected withthe storage cavity in an abutted manner, the magnet slides relative to the pump body to squeeze the storage cavity, one end of the magnet, away from the storage cavity is provided with a tension spring, and the conductive coil drives the magnet to move in a reciprocating manner along the lengthwise direction of the pump body in power supply or power failure. By the arrangement, the rhythm of heartbeat is simulated, and injury to target organs by continuous perfusion can be avoided.

Description

technical field [0001] The invention relates to a medical blood pump, in particular to a single-cavity reciprocating blood pump linked by magnetic force and elastic force. Background technique [0002] Clinically, patients with heart disease need open-heart surgery on the heart, which needs to meet the requirements of short-term extracorporeal circulation to completely replace the cardiopulmonary function. Blood pumps emerged as an artificial device. [0003] At present, most of the extracorporeal blood pumps used in the country are roller pressure and centrifugal blood pumps. The roller pump provides blood power by periodically compressing the pump tube, and the flow rate is constant and adjustable. However, the pump head squeezes the pump tube, causing great damage to red blood cells, and the pump tube wears out quickly. Through the rotation of the pump body, the centrifugal pump forms a pressure difference between the center and the edge, driving the blood to flow from t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M1/10
Inventor 葛斌陆婧王俊李超陈轶楠
Owner UNIV OF SHANGHAI FOR SCI & TECH
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