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Percutaneous Assisted Pumping Device

An auxiliary pump and blood pumping technology, which is applied in the direction of blood pumps, hypodermic injection devices, and other medical devices, can solve the problems of high cost, complex and compact internal structure of miniaturized motors, and inability to operate stably, achieving effective structure and reducing The difficulty of surgical implantation and the effect of reducing the risk of use

Active Publication Date: 2019-08-02
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 Assisted Pumping Device
  • Percutaneous Assisted Pumping Device
  • Percutaneous Assisted Pumping 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 driving signals and power to the driving module 2, and the driving module 2 feeds back the operating state of the motor, such as the rotor speed and current to form a closed-loop control; the control module 3 adopts an embedded hardware platform, equipped with The operating system can monitor the operation of the system through the human-computer interface, including the operating status of the drive module 2 and the auxiliary blood pumping flow rate of the blood pumping catheter 1 . 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 the signal line 5 , and the near end of the signal line 5 is a quick connector, which is connected to the signal port on the controller 31 . The controller 31 provides driving power and control...

Embodiment 2

[0058] The drive motor 21 adopts an air motor, and the support shell 22 also includes an 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 pressure of the air source to control the speed of the steam turbine. , and at the same time, the speed measurement structure feeds back 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 wheel, an air source, a solenoid valve, a speed measuring structure and a noise reducing structure. The air source provides driving power, and the controller 31 controls the air supply pressure of the air source by controlling the solenoid valve switch to adjust the speed of the steam turbine. The structure is connected with the flexible transmission structure 4 to drive the blood pumping impeller 12 in the blood pumping catheter 1 to realize ...

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, three-stage continuous blades with blade angles of 30°, 60°, and 85°, and the oblique flow section The ratio to the length of the outflow window is 1:1. Under the pressure difference condition of 60mmHg in the CFD simulation, 30,000 rpm, 40,000 rpm, and 50,000 rpm can achieve pump 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 and a single 60° axial flow blade, but with a diagonal flow section and a gradually changing hub to form a rear expansion section, at 30,000 rpm, 40,000 rpm, and 50,000 rpm The rpm can realize the pump blood flow of 0.5L / min, 1.0L / min, and 2.0L / min respectively.

[0062] Under the same impeller specifications and CFD simulation conditions, a ...

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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 percutaneously implanted miniature cardiac auxiliary blood pumping device. Background technique [0002] Cardiovascular disease is a collective term for heart and vascular disorders, 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 diseases in 2012, accounting for about 31% of the total global deaths. Among them, 80% of patients died of coronary heart disease and stroke, and it is estimated that about 7.4 million people died of coronary heart disease and 6.7 million died of stroke. More than 75% of the deaths occurred in developing countries. In 2012, the death rate in China was 0.3% (300 people died of cardiovascular diseases per 1 million population), while the death rates in the United States, the Unit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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