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Percutaneous auxiliary pumping blood device

An auxiliary pump and blood pumping technology, applied in the direction of blood pumps, hypodermic injection devices, drug devices, etc., can solve the problems of complex and compact internal structure of miniaturized motors, unstable operation, high cost, etc., and reduce the difficulty of surgical implantation , reduce the risk of use, the effect of effective structure

Active Publication Date: 2017-06-30
FENGKAI MEDICAL INSTR (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the internal structure of miniaturized motors is more complex and compact, the cost is higher, and the operation stability cannot be compared with conventional motors
In addition, the motor itself is fixed as a rigid and non-bendable part, and the impact on the difficulty of the operation can only be avoided by reducing its own volume as much as possible.

Method used

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  • Percutaneous auxiliary pumping blood device
  • Percutaneous auxiliary pumping blood device
  • Percutaneous auxiliary pumping blood device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] The driving motor 21 adopts an electric motor, and the control module 3 provides the driving signal power supply to the driving module 2, and the driving module 2 feeds back the running state of the motor, such as rotor speed and current for forming closed-loop control; the control module 3 adopts an embedded hardware platform, which is equipped with The operation of the system, including the operation state of the drive module 2 and the auxiliary pumping blood flow of the blood pumping catheter 1, can be monitored by the operating system through the man-machine interface. The embedded controller 31 is driven by an AC power supply, and provides DC power to the driving module 2 and the blood pumping catheter 1 at the same time. The drive module 2 is connected to the control module 3 through a signal line 5 , and the proximal end of the signal line 5 is a quick-connect joint, which is connected to the signal port on the controller 31 . The controller 31 provides driving p...

Embodiment 2

[0058] The drive motor 21 adopts an air motor, and the support housing 22 also includes additional speed measuring structure, exhaust structure and noise reduction structure. The control module 3 outputs a control signal to the drive module 2 to control the output air pressure of the air source to control the speed of the steam turbine. , while the speed measuring structure feedbacks the actual speed of the steam turbine to form a closed-loop control. In this embodiment, the driving module 2 is composed of a driving steam turbine, an air source, a solenoid valve, a speed measuring structure and a noise reduction structure. The air source provides driving power. The controller 31 controls the air pressure of the air source by controlling the solenoid valve switch to adjust the speed of the steam turbine. The speed measuring structure adopts a laser speed measurement, which feeds back the real-time speed to the controller 31 to form a closed-loop control. The structure is connec...

Embodiment 3

[0060] In this embodiment, the 4mm micro blood pump impeller adopts the ratio of axial flow section to oblique flow section of 6:1, the hub ratio of 0.4, the three-section continuous blade with blade angles of 30°, 60°, and 85°, and the oblique flow section. The ratio to the outflow window length is 1:1. Under the pressure difference of 60mmHg in the CFD simulation, 30,000 rpm, 40,000 rpm, and 50,000 rpm can achieve pumping blood flow rates of 1.0L / min, 2.5L / min, and 3.5L / min, respectively.

[0061] Under the same impeller specifications and CFD simulation conditions, a control impeller with a traditional axial flow structure hub, a single 60° axial flow blade, but a gradient hub with a diagonal flow section formed a rear expansion section, at 30,000 rpm, 40,000 rpm, rpm can achieve pumping flow of 0.5L / min, 1.0L / min, 2.0L / min respectively.

[0062] Under the same impeller specifications and CFD simulation conditions, using a traditional axial flow structure hub, a single 60°...

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Abstract

The invention discloses a percutaneous auxiliary pumping blood device. The device comprises a driving module, a control module and a pumping blood conduit capable of being percutaneously implanted into a human body, wherein the driving module is located outside the body and is arranged to be separated from the pumping blood conduit, a far end of the driving module is connected to the pumping blood conduit through a flexible transmission structure, and a near end of the driving module is connected to the control module through a signal line. According to the percutaneous auxiliary pumping blood device, the pumping blood conduit and the driving module are arranged to be separated from each other and are connected through the flexible transmission structure, an active driving module is located outside the body, the flexible transmission structure drives the pumping blood conduit to be implanted inside the body to achieve the auxiliary pumping blood function, additional risks brought by when the active parts enter the body are avoided, and the using risk of a system and the operation implantation difficulty are effectively lowered.

Description

technical field [0001] The invention relates to an artificial auxiliary blood pumping device, in particular to a short-term use percutaneously implanted miniature cardiac auxiliary blood pumping device. Background technique [0002] Cardiovascular disease is a general term for disorders of the heart and blood vessels, including coronary heart disease, cerebrovascular disease, rheumatic heart disease and congenital heart disease. According to WHO statistics, an estimated 17.5 million people died of cardiovascular disease in 2012, accounting for about 31% of the global total. 80% of the patients died of coronary heart disease and stroke. It is estimated that about 7.4 million people died of coronary heart disease and 6.7 million people died of stroke. More than 75% of deaths occurred in developing countries, of which China's death rate in 2012 was 0.3% (300 deaths per 1 million population due to cardiovascular disease), while the United States, the United Kingdom's death rate...

Claims

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Application Information

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IPC IPC(8): A61M1/12
CPCA61M2205/04A61M60/135A61M60/148A61M60/205A61M60/40
Inventor 陈一婷张玉琴
Owner FENGKAI MEDICAL INSTR (SHANGHAI) CO LTD
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