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Water injection high-frequency endotherm knife for operations

A high-frequency electrocautery, surgical technology, applied in the field of medical surgical instruments, can solve the problems of easily damaged and heated small blood vessels, delayed complications, large tissue scope, etc., and achieves clear surrounding anatomical structure, enhanced electrical conductivity, Strong sense of organization

Active Publication Date: 2014-08-27
XIN HUA HOSPITAL AFFILIATED TO SHANGHAI JIAO TONG UNIV SCHOOL OF MEDICINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the large range of traditional electrosurgical tissue damage in the prior art, easy damage to small blood vessels at low-heated parts, and easy to cause delayed complications, while ultrasonic scalpel, thermal scalpel, etc. Large surface area, high price and other defects, providing a water injection high-frequency electric knife for surgery

Method used

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  • Water injection high-frequency endotherm knife for operations
  • Water injection high-frequency endotherm knife for operations
  • Water injection high-frequency endotherm knife for operations

Examples

Experimental program
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Embodiment 1

[0046] Such as figure 1 As shown, the water injection high-frequency electric knife for surgery of the present invention includes a housing 1 and a metal electric knife head arranged at one end of the housing, and the metal electric knife head is electrically connected to the circuit board (not shown) located in the housing. To connect, the circuit board is connected to the electric wire (not shown in the figure) arranged at the tail end of the casing, and the electric wire is connected to an electrode terminal of the external high-frequency generator (not shown in the figure). Wherein, the circuit board located in the casing, and the connection method between the circuit board, the metal electric knife head and the electric wires are all known to those skilled in the art, so they will not be described in detail.

[0047] The side wall 11 of the casing is provided with an electric cutting button 2 and an electric coagulation button 3 electrically connected with the circuit boa...

Embodiment 2

[0055] The structure of the water-filled high-frequency electric knife in this embodiment is roughly the same as that in Embodiment 1, except that there is a difference in the arrangement of the metal electric knife head. Embodiment 1 is to replace the metal electric knife head with a metal injection needle, and this embodiment is to retain the metal electric knife head, and add a metal injection needle at the head end of the shell, so that the metal injection needle and the water injection hose One end is connected, and the water injection hose sprays the injection liquid through the metal injection needle. In addition, the metal injection needle can also be retractable, so that the metal injection needle can be stretched out during the operation, the water injection control button can be pressed, the injection fluid is sprayed on the local tissue, and then the metal injection needle can be retracted, and then the metal injection needle can be retracted like using an ordinary ...

Embodiment 3

[0057] The structure of the water-injection high-frequency electric knife in this embodiment is roughly the same as that in Embodiment 1, except that this embodiment uses a water-injection control paddle as a water-injection switch structure for controlling the on-off of the water-injection liquid in the injection hose. Such as Figure 4 As shown, the water injection control paddle 8 is rotatably connected to the side wall 11 of the casing through a rotating shaft 9. When the water injection control paddle is turned to be perpendicular to the side wall of the casing, the water injection control paddle presses against the injection hose. The flow of injection liquid in the injection hose is hindered. When the water injection control paddle is moved to incline with the side wall of the housing, the injection hose is no longer pressed, and the injection liquid in the injection hose can flow smoothly.

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Abstract

The invention provides a water injection high-frequency endotherm knife for operations. The water injection high-frequency endotherm knife comprises a shell and a metal endotherm knife head arranged at the head end of the shell. The endotherm knife head is electrically connected with a circuit board in the shell. The circuit board is connected with a wire arranged at the tail end of the shell. The side wall of the shell is provided with an electric resection key and an electric coagulation key which are electrically connected with the circuit board. A metal injection syringe needle is also arranged at the head end of the shell, or a metal injection syringe needle replacing the metal endotherm knife head is arranged at the head end of the shell. The tail end of the metal injection syringe needle is connected with an injection hose, made of insulating materials, in the shell, the side wall of the shell is further provided with a water injection switch structure capable of controlling on-off of the injection hose, and the other end of the injection hose is guided out through the tail end of the shell. According to the water injection high-frequency endotherm knife for the operations, tissue cutting efficiency and the fine degree can be improved in many ways, fine normal tissue like nerves is protected, the wound surface blood bleeding and seepage phenomena existing during operations and after operations are reduced, and therefore convenience is provided for surgical operations which are more fine and rapid.

Description

technical field [0001] The invention relates to an instrument for medical operation, in particular to a water-injected high-frequency electric knife for operation. Background technique [0002] The electric knife uses the radio frequency of alternating current to cut and coagulate tissue. The electric knife can effectively reduce bleeding, shorten the operation time, and provide a very clean surgical field without ligation of all blood vessels. The electric knife uses the current itself to heat the tissue. The current must pass through the tissue to generate heat. The current conducts in the tissue to generate heat. The heat comes from the oscillation of cell ions. The oscillated ions collide with each other in the cell, and their energy is released in the form of heat. come out. The effect of the electric knife in the tissue depends on the size of the current flowing through the tissue, that is, the current density, current density = ampere / area (A / cm 2 ). When working, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B18/12
Inventor 陆巍刘颖斌
Owner XIN HUA HOSPITAL AFFILIATED TO SHANGHAI JIAO TONG UNIV SCHOOL OF MEDICINE
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