Single-side heating multi-slit hemostatic needle

A technology of gap and insulating medium, applied in the field of medical devices, can solve the problems of complicated operation process, slow excision time, and heavy bleeding, so as to avoid indiscriminate injury, reduce the degree of carbonization and scab, and reduce the bleeding effect.

Active Publication Date: 2017-07-25
WEST CHINA HOSPITAL SICHUAN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing various liver resection devices have disadvantages such as slow resection time to varying degrees, complicated surgical procedures, and excessive bleeding.

Method used

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  • Single-side heating multi-slit hemostatic needle
  • Single-side heating multi-slit hemostatic needle
  • Single-side heating multi-slit hemostatic needle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Such as figure 1 As shown, the unilaterally heated multi-slit hemostatic needle disclosed in this embodiment includes a coaxial multi-slit electromagnetic main radiator 1 and an insulating dielectric body 2. The insulating dielectric body 2 has a multi-slit electromagnetic main radiator 1. The cavity, the multi-slot electromagnetic main radiator 1 is arranged in the cavity, the multi-slot electromagnetic main radiator 1 includes an inner conductor 5 and an outer conductor 6, the outer conductor 6 is a hollow cylinder, the inner conductor 5 is preferably a metal conductor column, and the outer conductor 6. The metal conductor thin layer structure is preferred. The inner conductor 5 is arranged in the outer conductor 6. The front end of the inner conductor 5 exceeds the outer conductor 6. An insulating medium layer 7 is filled between the inner conductor 5 and the outer conductor 6. The material of the insulating medium layer 7 is preferably polyethylene. Outer conductor...

Embodiment 2

[0036] The difference between this embodiment and embodiment 1 is: as figure 2 , 3 As shown, a cooling chamber 4 is provided in the insulating medium body 2, and the multi-slit electromagnetic main radiator 1 is located inside the cooling chamber 4. The cooling chamber 4 includes a first chamber 13 and a second chamber 14. The first chamber The chamber 13 and the second chamber 14 are axially arranged, the rear end of the first chamber 13 communicates with the water inlet pipe 11, the rear end of the second chamber 14 communicates with the water outlet pipe 12, and the front end of the first chamber 13 communicates with the second chamber. The front end of the chamber 14 communicates. The cooling chamber provided in the invention can effectively reduce the temperature of the needle body and reduce the degree of carbonization and scabbing of objects on the contact surface.

[0037] For example, the insulating dielectric body 2 is an inner and outer double-layer structure, an...

Embodiment 3

[0039]The difference between this embodiment and Embodiment 1 or 2 is that there are three slots 8, namely the first slot, the second slot and the third slot. The third slot is located at the front end of the second slot, and the second slot is located at the front end of the first slot. Wherein, the width of the first slit is 3 mm, the width of the second slit is 2 mm, and the width of the third slit is 3 mm. The distance between the first slit and the second slit is 30mm, the distance between the second slit and the third slit is 20mm, and the distance between the third slit and the front end of the outer conductor 6 is 27mm. The length of the insulating dielectric body 2 is 125 mm, extending 125 mm from the connecting base 3 to the front end, and the front end of the inner conductor 5 is 63-5 mm beyond the outer conductor. The length of the metal retainer 9 is equal to the length of the inner conductor 5 , and the metal retainer 9 extends from the connecting seat 3 to the ...

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Abstract

The invention discloses a single-side heating multi-slit hemostatic needle. The single-side heating multi-slit hemostatic needle comprises a multi-slit electromagnetic main radiator and an insulating dielectric body which are arranged coaxially; the insulating dielectric body is provided with a cavity matched with the multi-slit electromagnetic main radiator; the multi-slit electromagnetic main radiator is arranged in the cavity; the multi-slit electromagnetic main radiator comprises an inner conductor and an outer conductor; the inner conductor is arranged in the outer conductor; an insulating dielectric layer is filled between the inner conductor and the outer conductor; the outer conductor is provided with at least two annular slits; metal blocking plates are arranged on the slits; the metal blocking plates block a part of the slit 8; the metal blocking plates are arranged on the outer side of the insulating dielectric body. The single-side heating multi-slit hemostatic needle has the advantages of establishing a whole liver cutting tourniquet at once; significantly shortening the operation time and reducing the complexity of the operation; achieving single-side heating and ablation; producing no thermal effect on the retained side liver tissues at the same time when the side liver needs to be cut in complete ablation; and maximally avoiding indiscriminate harm of the electromagnetic waves to the normal liver cells needing to be retained.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a unilaterally heated multi-slit hemostatic needle. Background technique [0002] Liver resection is characterized by high difficulty and high risk, and has high requirements for the operator. Existing various liver resection devices all have disadvantages such as slow resection time to varying degrees, various and complicated surgical procedures, and excessive bleeding. [0003] For liver tumors, the currently recognized best treatment option is surgical resection. Surgical resection of liver tumors not only removes tumor cells, but often also requires removal of some normal liver parenchymal cells. Most of the patients with liver tumors in our country have reduced liver reserve function due to the long-term damage of hepatitis virus accompanied by cirrhosis. If the patients lose too many normal liver cells during the operation, it will lead to hepatic insufficiency or...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B18/12A61B18/14
CPCA61B18/12A61B18/1402A61B2018/00011A61B2018/00529A61B2018/00577
Inventor 冯曦林先其刘王毛刘东屹李波王文涛魏永刚
Owner WEST CHINA HOSPITAL SICHUAN UNIV
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