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A magnetically driven high-flow pulsatile blood pump

A magnetic drive, high flow technology, applied in the field of electromagnetic pumps, can solve the problems of being easily affected by external magnetic fields, increasing the flow rate of the device, and the large heat of the electromagnetic coil, so as to improve the working conditions, increase power and reduce heat generation.

Inactive Publication Date: 2020-07-31
SHANGHAI YANGPU SHIDONG HOSPITAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Patent application number 201611244533X (publication number CN106593891A) discloses a magnetic drive device, but the magnetic drive device is still under development, and the electromagnetic coil therein generates relatively large heat and is easily affected by an external magnetic field. In addition, the device's The traffic also needs to be improved

Method used

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  • A magnetically driven high-flow pulsatile blood pump
  • A magnetically driven high-flow pulsatile blood pump
  • A magnetically driven high-flow pulsatile blood pump

Examples

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Embodiment 1

[0046] figure 1 Shown is a magnetically driven high-flow pulsatile blood pump according to a preferred embodiment of the present invention, which includes four magnetic driving devices 1 and a sheet metal casing 2 covering the outside. Figure 2 ~ Figure 4 It is a schematic diagram of the installation of the magnetic propulsion device 1 , the magnetic propulsion device 1 is fixed on the support surface of the installation bracket 3 and works in linkage with the drive assembly 4 below, and is covered by a cover plate 5 above.

[0047] Each magnetic propulsion device 1 includes a driving coil 11 , a two-way joint 12 , an inner capsule 13 and a magnetic shielding cylinder 14 . Figure 5 It is an explosion schematic diagram of a single magnetic propulsion device 1 (inner capsule 13 sees Figure 6 ). The drive coil 11 is in the shape of a cylinder, and the inside is a blood pumping cavity. For the setting of the drive coil 11 and its control circuit, please refer to the patent CN...

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Abstract

The invention discloses a magnetically-driven high-flow pulsating type blood pump. The blood pump includes a mounting bracket and at least two magnetic push devices installed on the supporting surfaceof the mounting bracket; each magnetic push device includes a driving coil, a dual-pass connector, an inner capsule and a magnetic shielding drum. Every two magnetic push devices are classified intoone group, and each group is provided with a driving assembly; each driving assembly includes a support point, a balance supporting rod, two connecting push rods and two permanent magnet pistons. Every two magnetic push devices are combined into one group and are in linkage with one corresponding driving assembly. Heating can be effectively reduced, the power of the whole blood pump is increased by times, the flow is increased at the same time, the working conditions can be effectively improved, and a great working result can be obtained.

Description

technical field [0001] The invention belongs to the technical field of electromagnetic pumps, in particular to a magnetically driven high-flow pulsating blood pump. Background technique [0002] Currently commonly used blood pumps mainly include roller blood pumps and centrifugal blood pumps. Roller pumps have been used since 1935. The advantage is that preloading can provide a constant flow rate, with a maximum flow rate of 450 ml / min. A single pump cannot meet the requirements of extracorporeal membrane oxygenation (exteacoporal membrane oxygenation, ECMO) and open heart surgery. Extracorporeal circulation and other high blood flow (3000-6000 ml / min) needs. In order to increase the flow rate, multiple pumps are used in parallel, excessive extrusion of blood cells, a large number of destruction of blood cells, resulting in hemolysis, so it is not suitable for long-term support, the blood flow of the roller pump is a fluid with little fluctuation under high-speed conditions...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61M1/10
CPCA61M60/00A61M60/40
Inventor 方旭晨张磊葛斌高小刚白妮王昶扬
Owner SHANGHAI YANGPU SHIDONG HOSPITAL
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