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Single-fulcrum magnetomotive centrifugal blood pump

A single fulcrum, magnetic power technology, applied in the field of medical devices, can solve the problems of reducing the incidence of thrombus, small pre-filling volume, and low cost, and achieve the effect of reducing the incidence of thrombus, reducing the pre-filling volume, and reducing shear force

Active Publication Date: 2015-03-11
SHANGHAI CHILDRENS MEDICAL CENT AFFILIATED TO SHANGHAI JIAOTONG UNIV SCHOOL OF MEDICINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are no reports on blood pumps with simpler structure, effective reduction of thrombosis incidence, small priming volume, low flow rate and low cost.

Method used

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  • Single-fulcrum magnetomotive centrifugal blood pump
  • Single-fulcrum magnetomotive centrifugal blood pump
  • Single-fulcrum magnetomotive centrifugal blood pump

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Please refer to figure 1 , figure 1 It is an assembly drawing of the single fulcrum magnetic power centrifugal blood pump of the present invention. The single fulcrum magnetic power centrifugal blood pump is provided with a pump body and a driving device. The pump body includes a top cover 1, a base 2, an impeller 3 and an outer magnetic steel 305. The driving device includes a driving motor 4, Transmission shaft 5 and inner magnetic steel 501.

[0056] Please refer to figure 2 , figure 2 It is an assembly drawing of the single fulcrum magnetic power centrifugal blood pump body of the present invention. The top cover 1 is provided with an inlet 101 , an outlet 102 , an upper wall 103 and an outer wall 104 . The outer wall 104 is cylindrical, and the bottom end is provided with an internal thread (not shown); the upper wall 103 is conical and is located at the top of the outer wall 104; the inlet 101 is located at the center of the top of the upper wall 103 posit...

Embodiment 2

[0062] The single fulcrum magnetic power centrifugal blood pump of this embodiment is basically the same as that of Embodiment 1, the only difference is: please refer to Figure 7 , Figure 7 It is a second isometric view of another impeller of the single pivot magnetodynamic centrifugal blood pump of the present invention. The impeller 3 is provided with six blades 301, and the blades 301 are straight blades.

Embodiment 3

[0064] The single fulcrum magnetic power centrifugal blood pump of this embodiment is basically the same as that of Embodiment 1, the only difference is: please refer to Figure 8 , Figure 8 It is a two-dimensional axis view of another driving device of the single fulcrum magnetodynamic centrifugal blood pump of the present invention, and the inner magnetic steel 501 is a circular sheet-shaped magnetic steel. Correspondingly, the top surface 3051 of the outer magnet 305 (not shown) is circular, that is, the outer magnet 305 is a sheet cylinder.

[0065] For the above-mentioned embodiments 1-3, it should be noted that:

[0066] The arc-shaped central groove 304 cooperates with the hemispherical ball 205 in the groove 204 of the base 2 to form a single fulcrum bearing, and the hemispherical ball 205 plays the role of axially supporting the impeller 3 and radially fixing The role of the impeller 3, the single fulcrum bearing has a simple structure, can effectively reduce t...

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Abstract

A single-fulcrum magnetomotive centrifugal blood pump is provided with a pump body and a driving device. The pump body comprises a top cap (1), a base (2), an impeller (3) and outer magnetic steel (305); the base (2) is provided with at least three layers of bosses (201, 202, 203); the boss (201) at the top end is provided with a groove (204); a rolling ball (205) is placed in the groove (204); a patchhole (206) is arranged at the center of the bottom of the base (2); vanes (301) and an annular joint (302) are arranged on the impeller (3); connecting rods (303) are arranged in the inner circle of the annular joint (302) and gathered around the center of the inner circle of the annular joint (302); a circular arc central groove (304) is formed at the bottom of the gathering position of the connecting rods, and is matched with the rolling ball (205) in the groove (204) in the boss to form a single-fulcrum bearing; the outer magnetic steel (305) is arranged inside the vanes (301); the driving device comprises a transmission shaft (5) and a driving motor (4) provided with a motor rotor (401); the motor rotor (401) is sleeved with the transmission shaft (5); the transmission shaft (5) is inserted into the patchhole (206); and inner magnetic steel (501) is arranged inside the transmission shaft (5). The blood pump can effectively reduce the incidence rate of thrombus and hemolysis as the pre-filling quantity is less; the structure is simple and stable; the mounting is convenient; and the cost is low.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a single fulcrum magnetic power centrifugal blood pump. Background technique [0002] Cardiovascular and cerebrovascular diseases have already ranked first in the cause of human death in developed countries, accounting for about 46% of the mortality rate. Statistics in the United States show that the number of heart operations is about 350,000 cases per year. At present, the number of open-heart surgeries in China is about 100,000 per year. With the rapid development of the economy and the continuous improvement of the medical level, the number of heart surgeries in China will inevitably increase. According to statistics, after cardiac surgery, some patients (0.6-2%) cannot maintain the minimum requirements of the body due to severe impairment of cardiac function, even with drug support. These patients have to use assisted circulation equipment to temporarily support the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61M1/12A61M1/10A61M60/122A61M60/216A61M60/419A61M60/824
CPCA61M1/101A61M1/1013F04D29/047A61M1/122A61M1/1036F04D13/0606A61M1/1031A61M60/824A61M60/422A61M60/419A61M60/148A61M60/216A61M60/122
Inventor 王伟韩露俞晓青丁文祥杨明张海波
Owner SHANGHAI CHILDRENS MEDICAL CENT AFFILIATED TO SHANGHAI JIAOTONG UNIV SCHOOL OF MEDICINE
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