Rotary transmission guide pipe with power source capable of being placed in human body

A power source, human body technology, applied in the direction of catheters, prostheses, medical devices, etc., can solve the problems of high rotational resistance, waste of life, high useless power consumption, etc., to shorten the length, reduce costs, improve system reliability and The effect of running time

Pending Publication Date: 2019-11-01
杨礼瑾
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But what comes with it is the high requirements for technology and raw materials, which also brings challenges to cost and quality control
It is also mentioned in the patent that fluids with a higher viscosity than water are very suitable as purge fluids, and the rotor in the patent is in direct contact with the purge fluid. Higher viscosity purge fluids will inevitably bring higher rotational resistance. This will inevitably lead to higher useless power consumption, and the blood pump is in the blood vessel. It is undoubtedly a challenge to convert these useless power into heat energy and how to take it away
In addition, the life of the intravascular blood pump in the aforementioned patent is also limited by the life of the permanent magnet coating. In the patent, the experiment ensures that the coating will not fail within 180 days, but the life of a general commercially available brushless motor is about 2W hours, about 800 days , it can be seen that there is still a certain waste in the life of other parts of the blood pump, and it also limits the possibility of further extending the working time of the blood pump

Method used

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  • Rotary transmission guide pipe with power source capable of being placed in human body
  • Rotary transmission guide pipe with power source capable of being placed in human body
  • Rotary transmission guide pipe with power source capable of being placed in human body

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Example 1 (only suction device 62 is used)

[0029] Such as figure 1 As shown, a rotary transmission catheter with a power source that can be placed in the human body disclosed in this embodiment includes a rotary function part 41, a rigid shaft 42, a distal flow restrictor 51, a proximal flow restrictor 52, a motor 43, and a fixed package. Housing 31, gas pipeline 50, motor controller 45, cable 44, return perfusion liquid collection device 63, suction equipment 62, perfusion return line 61, perfusion liquid storage bag 55, perfusion pump 54 and perfusion pipeline 53.

[0030] The electric motor 43 is a device for converting electrical energy into kinetic energy of a rotating machine. The cable 44 passes through the inside of the human body and is used to transmit electric energy to the motor 43, and is generally a metal wire covered with an insulating layer. The motor controller 45 is used to provide electrical energy to the motor 43, and control the speed, torque, and pow...

Embodiment 2

[0035] Embodiment 2 (on the basis of embodiment 1, the return flow perfusion solution guide component 60 is added)

[0036] Such as figure 2 As shown, the difference between this embodiment and Embodiment 1 lies in the addition of a return flow perfusion solution guide component 60. The return perfusion fluid guide device 60 is used to prevent the return perfusion fluid from flowing into the motor 43 so that the perfusion fluid can better flow into the return perfusion pipeline 61.

[0037] In this embodiment, the length of the cable 44, the filling pipe 53, and the filling return pipe 61 is about 1200 mm. The hydraulic diameter of the filling pipe 53 is 0.5 mm, the hydraulic diameter of the filling return pipe 61 is approximately 1 mm, and the hydraulic diameter of the gas transmission pipe 50 is approximately 1 mm. The rotating function member 41 may be an impeller for pumping blood, or a grinding head with diamond particles on the surface for calcification treatment. The diam...

Embodiment 3

[0039] Example 3 (Using only gas delivery and pressurizing equipment 56)

[0040] Such as figure 1 As shown, the difference between this embodiment and Embodiment 1 is that the suction device 62 is eliminated, and the gas delivery and pressurization device 56 is added, and the gas is sent into the gas pipeline 50 through the gas delivery and pressurization device 56. The gas delivery and pressurizing device 56 increases the pressure of the gas flowing into the pipeline, thereby increasing the gas flow.

[0041] In this embodiment, the length of the cable 44, the filling pipe 53, and the filling return pipe 61 is about 1200 mm. The hydraulic diameter of the filling pipe 53 is 0.5 mm, the hydraulic diameter of the filling return pipe 61 is approximately 1 mm, and the hydraulic diameter of the gas inflow pipe 50 is approximately 1 mm. The inlet of the gas inflow pipeline 50 is connected to the gas delivery and pressurizing device 56, and the outlet of the gas inflow pipeline 50 is lo...

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PUM

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Abstract

The invention discloses a rotary transmission guide pipe with a power source capable of being placed in a human body. The rotary transmission guide pipe with the power source capable of being placed in the human body comprises a fixed packaging shell capable of being placed in the human body, a rigid shaft, the power source and an acting part, and the power source is connected with a power sourcecontroller through a cable. The rotary transmission guide pipe with the power source capable of being placed in the human body is characterized in that the power source is arranged in the fixed packaging shell, the power source drives the acting part located outside the fixed packaging shell through the rigid shaft, and a near-end current-limiting part and a far-end current-limiting part are arranged on the rigid shaft in a penetrating mode. The rotary transmission guide pipe with the power source capable of being placed in the human body has the following advantages that the two current-limiting parts are used and liquid sealing is used for isolating blood and a motor. The motor is internally arranged in the human body, the length of the rotary part is effectively shortened, and the reliability and operation time of the system are improved. Suction equipment and/or gas delivery pressurized equipment is used, gas circulates to form purging sealing protection of the power source, it isguaranteed that backflow perfusion fluid is not accumulated in the guide pipe, a general motor can be used, a waterproof/anti-corrosion motor is not required, and the cost is reduced. The circulatinggas and liquid can take heat generated by the motor.

Description

Technical field [0001] The invention relates to a medical device, in particular to a rotation transmission catheter for percutaneous intervention. Background technique [0002] Vascular interventional surgery has become one of the indispensable methods of treatment and diagnosis in modern medicine because of its advantages such as small trauma, fast recovery, and obvious curative effect. And with the improvement of technology and manufacturing capabilities, vascular interventional devices are improving and evolving toward miniaturization, minimally invasive and even non-invasive. [0003] There are multiple classifications of medical devices according to the part of their use, form of use, structural characteristics, treatment cycle, etc. Among them, according to the different structural characteristics, they are divided into passive medical devices and active medical devices. Active medical devices refer to any medical devices that rely on electrical energy or other energy source...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M25/01A61M1/10A61M1/12A61B17/00A61B17/3207
CPCA61B17/00234A61B17/320758A61B2017/00017A61B2017/00398A61B2017/00778A61B2017/320741A61M25/0105A61M2210/12A61M60/135A61M60/40A61M2210/005
Inventor 杨坚刘燕
Owner 杨礼瑾
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