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Combined electrotome

An electric knife and knife head technology, applied in the field of medical devices, can solve the problems of muscle tissue damage, long operation time, slow electric cutting speed, etc., and achieve the effects of alleviating pain, ensuring surgical safety, and relieving the pain of disease.

Active Publication Date: 2014-09-24
HANGZHOU AGS MEDTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Disadvantages: Because the front end of the cutter head has no cutting effect, the electric cutting speed is slow, and the operation time is long. It is not good for the patient to be in a coma for a long time. The long-term ESD operation is not good for the physical fitness and patience of doctors and nurses. big test
The high-frequency generator has two wires, one is connected to the electrode plate, and the electrode plate is in contact with human skin tissue; the other is connected to the electrode joint of the electric knife. A complete circuit has the effect of heating the tissue, but its contact area is much larger than the head end of the needle knife, so the heat generated is small and the cutting effect is small, but it still has a destructive effect on the muscle layer tissue

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Such as Figure 1~5 with Figure 9-13 As shown, the present embodiment takes the combination of IT knife and other knife as an example.

[0049] A combined electric knife is mainly composed of a handle part 3 , a hose part 2 and a knife part 1 .

[0050] The handle part 3 is composed of a handle 31 and a sliding handle 32. The sliding handle 32 slides on the handle 31. The insulating sliding handle 32 is provided with a cable connector 33, and is connected to the metal mandrel that runs through the inside of the hose part 2. Section 4 connections can conduct current and push, pull and torque.

[0051] The proximal end of the hose part 2 is connected to the handle part 1. The hose part 2 can be composed of a composite material. The inner side is a spring wound into a tubular shape and an insulating layer of a polymer material is attached on the outer side to prevent electric current from causing harm to doctors or patients. The spring tube 22 has good support strength...

Embodiment 2

[0067] Such as Figure 6-8 As shown, the present embodiment provides another connection method between the metal cutter head 11 and the insulating cutter head 12. The main difference is that the outer side of the rotating shaft portion 18 of the metal cutter head 11 is semicircular, which is different from the semicircular insulating cutter head shank 14. After being assembled into a roughly cylindrical shape, at least one face of the front limit stopper 15 and the rear limit stopper 16 is provided with a slightly larger semicircular hole than the edge cutter head tool bar 14, so that the edge cutter of the insulating cutter head 12 The metal knife head knife bar 13 can be driven to rotate when the head knife bar 14 rotates. The rest of the structures and functions are the same as those in Embodiment 1.

Embodiment 3

[0069] Such as Figure 13 , Figure 14 As shown, the difference between the present embodiment and Embodiment 1 is that the near end of the insulating cutter head 12 may not be provided with 122 conductor blocks, and when the insulating cutter head 12 stretches out, its insulating cutter head cutter bar 14 can pass to the current Cut the tissue. The resistance end surface 413 of the mandrel 41 is in contact with the rear limiting block 16 and can conduct current and cut tissue. When the insulating cutter head 12 is retracted, the metal cutter head shank 13 and the metal cutter head 11 are exposed and can be in contact with tissues. When cutting, the doctor will control the endoscope to press the metal blade blade 13 tightly on the tissue, and the insulated blade blade 14 runs through the front blocking piece 15 and the rear blocking piece 16, and the insulation blade blade 14 is under the action of external force 14 will be in contact with the front barrier sheet 15 or the ...

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Abstract

The invention relates to a combined electrotome which comprises a cutter head part, a hose part and a handle part, wherein the cutter head part comprises at least two or more than two cutter heads which can relatively move or rotate, and each cutter head is connected with a cutter rod; the hose part comprises an insulation outer tube, wherein at least one spindle made of a conductor material penetrates through the insulation outer tube, one end of the spindle is connected with the handle part which is used for controlling the spindle to move, and the other end of the spindle is connected with a cutter bar which is driven to move by the spindle; the handle part comprises a handle, wherein at least one sliding handle is arranged on the handle, the sliding handle is connected with the spindle which is driven by the sliding handle to control at least one cutter to move, so that at least one cutter or cutter bar is exposed or contained, and a cable connector which is connected with a high-frequency power source is further arranged on the sliding handle. The combined electrotome has the advantages that a doctor can select an appropriate electrotome type to safely and quickly complete an operation, so that the operation safety of a patient can be greatly guaranteed, and the pain of the patient is relieved.

Description

technical field [0001] The invention relates to the field of medical instruments, in particular to a combined electric knife for tissue high-frequency electric cutting in endoscopic surgery. Background technique [0002] Endoscopy has been born for more than 50 years, and has gone through the stages from disease diagnosis to disease treatment. The treatment of some digestive diseases has been very effective and reliable, and has even become the first choice for the treatment of some diseases. In recent years, with the development of endoscopic biopsy, EMR (endoscopic mucosal resection), and ESD (endoscopic submucosal dissection) technology, the treatment of polyps and early cancers of the digestive tract is gradually becoming a preferred diagnosis and treatment. means. Among them, ESD (endoscopic mucosal resection) plays a key role in the detection, diagnosis and resection of early cancer. [0003] However, ESD surgery is cumbersome and troublesome, and generally takes a l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B18/12
Inventor 凌亭生陈莉时百明
Owner HANGZHOU AGS MEDTECH CO LTD
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