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Multi-cavity pipe for hole opening in partition wall for flexible transmission

A technology of flexible transmission and partition wall, which is applied in catheters, medical science, surgery, etc., can solve the problems of particles entering the human body and cannot be solved, and achieve the effect of improving passing capacity, reducing parts, and reducing length

Pending Publication Date: 2019-05-31
杨礼瑾
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In the patent CN105682602, a flexible drive design is disclosed. Although it mentions the use of lubricating oil with good biocompatibility to be filled between the stator and the shaft to form a sliding bearing, it also cannot solve the problem in the case of blood pressure and blood. , the maintenance of lubricating oil, and the risk of long-term temperature rise and excessive wear particles entering the human body

Method used

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  • Multi-cavity pipe for hole opening in partition wall for flexible transmission
  • Multi-cavity pipe for hole opening in partition wall for flexible transmission
  • Multi-cavity pipe for hole opening in partition wall for flexible transmission

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment 1 (Using the opening position of the partition wall and the flow limiting part of the transmission chamber to control the return flow)

[0034] In this embodiment, a multi-lumen tube with a length of 1200 mm is taken as an example. The multi-lumen tube disclosed in this embodiment includes a tube body 61, inside the tube body 61 there are a plurality of channel cavities distributed along the axis of the tube body 61, and the channel cavities are separated from each other by partition walls. In this embodiment, the channel cavity includes a central transmission cavity 68 and a perfusion cavity one 65 . The transmission chamber 68 communicates with the perfusion chamber 1 65 through at least one opening on the partition wall. In this embodiment, the opening is located 20 mm from the distal end toward the proximal end in the axial direction of the tube body 61 , and the hydraulic diameter of the opening is 0.8 mm. There is a flexible drive shaft 55 inside the ...

Embodiment 2

[0038] Embodiment 2 (Using the opening position of the partition wall and the flow limiting part of the transmission chamber, the remote flow limiting part cooperates with the rigid shaft to jointly control the return flow)

[0039] The difference between this embodiment and Embodiment 1 is that: the position of the opening on the partition wall between the transmission chamber 68 and the perfusion chamber 1 65 is located 10 mm from the distal end to the proximal end of the tubular body 61 in the axial direction. The distal end of the flexible driving shaft 55 is connected with the rotating function part 41 through the distal rigid shaft 51 , and the distal end of the flexible driving shaft 55 is connected with the distal rigid shaft 51 through an adapter 54 . The distal end of the tube body 61 is sealingly connected with the fixed packaging shell 70 . The fixed packaging shell 70 is used to accommodate the distal restrictor 52 and the distal rigid shaft 51 , providing a seale...

Embodiment 3

[0042] Embodiment 3 (Using the opening position of the partition wall and the flow-limiting part of the transmission chamber, the distal flow-limiting part and the rigid shaft cooperate to control the return flow, and at the same time, add a perfusion pipeline to directly control the perfusion into the human body)

[0043] The difference between this embodiment and embodiment 2 lies in that: a perfusion cavity, ie perfusion cavity two 66 , is added in the tube body 61 . The perfusion solution is poured into the first perfusion chamber 65 and the second perfusion chamber 66 by different infusion bags 60 and perfusion pumps or pressure bags 57 . The flow ratio of the cooling liquid poured into the human body and returned to the body can be adjusted according to actual needs, and the free adjustment of the flow ratio of 1 to 300 times can generally be realized. The hydraulic diameter of the perfusion chamber 2 66 is 0.5mm. The outlet of the distal end of the perfusion chamber 2 ...

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Abstract

The invention relates to a multi-cavity pipe for hole opening in a partition wall for flexible transmission. The multi-cavity pipe comprises a pipe body and is characterized in that at least two channel cavities distributed along the axis of the pipe body are formed in the pipe body, the channel cavities are separated from each other through the partition wall. Each channel cavity comprises a transmission cavity and at least one perfusion cavity, wherein the at least one perfusion cavity is communicated with the transmission cavity through at least one hole formed in the partition wall, a connecting driving flexible shaft which is used for transmitting the torque generated by a power source to a rotating functional piece penetrates through the transmission cavity, the power source is located at the near end of the connecting driving flexible shaft, and the rotating functional piece is located at the far end of the driving flexible shaft. The temperature rise inside a catheter can be effectively controlled, and the risk that particles and excessive perfusion fluid enter the human body and increase the burden of organs is reduced, so that the safe and effective long-term operation ofthe catheter is achieved.

Description

technical field [0001] The invention relates to a percutaneous interventional rotation transmission catheter, which belongs to the field of medical equipment. 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 in the direction of miniaturization, minimal invasiveness and even non-invasiveness. [0003] There are many classification methods for medical devices according to their used parts, forms of use, structural features, and treatment cycles. According to different structural features, 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 energ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M25/14A61B17/32A61B17/22A61M1/12
Inventor 杨坚刘燕李建军
Owner 杨礼瑾
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