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CN-122005066-A - Electric cutting equipment

CN122005066ACN 122005066 ACN122005066 ACN 122005066ACN-122005066-A

Abstract

The invention provides electrotome equipment, belongs to the field of medical appliances, and is used for solving the problem that large tissues are difficult to remove smoothly in the prior art; the tissue cutting device comprises an operating mechanism, a sheath tube and an electrotome electrode, wherein the operating mechanism is connected with the proximal end of the sheath tube, the electrotome electrode is rotatably connected with the distal end of the sheath tube, the operating mechanism comprises a driving component, the driving component is used for driving the electrotome electrode to rotate, the electrotome electrode is used for cutting tissues to be cut and cutting the cut tissues in the cutting process, a suction channel used for sucking the tissues is arranged in the sheath tube and is communicated with external suction equipment, the driving component is used for driving the electrotome electrode to rotate so as to realize tissue cutting, and simultaneously cutting of the cut tissues is completed, so that the problem that a large piece of tissues under a narrow channel cannot be sucked out through the suction channel is solved.

Inventors

  • LI CHAO
  • HUANG CHENGCHENG
  • MA ZIWEI
  • MA ZHIYUAN

Assignees

  • 重庆润山医疗科技有限公司

Dates

Publication Date
20260512
Application Date
20260410

Claims (10)

  1. 1. The electrotome equipment is characterized by comprising an operating mechanism, a sheath tube and an electrotome electrode; the operating mechanism is connected with the proximal end of the sheath tube, and the electrotome electrode is rotatably connected with the distal end of the sheath tube; The operating mechanism comprises a driving component, and the driving component is used for driving the electrotome electrode to rotate; The electric cutting electrode is used for cutting tissues to be cut and cutting the cut tissues in the cutting process; a suction channel for sucking tissue is provided in the sheath, and the suction channel is used for communicating with an external suction device.
  2. 2. The electrotome of claim 1, wherein the electrotome electrode comprises two connecting portions and an arc-shaped ring cutting body positioned between the two connecting portions, wherein each connecting portion is rotatably connected with the distal end of the sheath tube and is connected with the driving assembly, the ring cutting body comprises a nonlinear inner cutting body, an arc-shaped outer cutting body and a plurality of first cutting portions connected with the inner cutting body and the outer cutting body, the plurality of first cutting portions are arranged between the inner cutting body and the outer cutting body at intervals, and the first cutting portions are used for cutting cut tissues.
  3. 3. The electric cutting apparatus according to claim 2, wherein the cutting surfaces of the inner cutting body, the outer cutting body and the first cutting portion are non-planar.
  4. 4. The electrotome of claim 2, wherein the inner cutting body is arcuate, and wherein the radius of the inner cutting body is 1/3 or more of the radius of the sheath.
  5. 5. The apparatus of claim 2, wherein the inner cutting member, the outer cutting member and the first cutting member are formed of a wire having a diameter to sheath diameter ratio of 1:20-1:100.
  6. 6. The electrotome apparatus of claim 1, further comprising a camera disposed at a distal end of the sheath; The liquid injection device is characterized in that two liquid injection sub-channels are further arranged in the sheath tube, the two liquid injection sub-channels and the camera are arranged at the far end of the sheath tube in a triangular mode under the plane view angle perpendicular to the axial direction of the sheath tube, the camera is located above an inlet of the suction channel, and a central axis of the suction channel is located below a connecting line of liquid outlets of the two liquid injection sub-channels.
  7. 7. The electrotome of claim 1, wherein a pressure measuring channel is further disposed within the sheath for containing a fluid, and wherein a distal end of the pressure measuring channel is in communication with the aspiration channel and a proximal end is in communication with the pressure measuring device.
  8. 8. The electrotome apparatus of any one of claims 1-7, wherein an electrocoagulation electrode for coagulation is disposed on a distal side of the sheath.
  9. 9. The apparatus of claim 2, wherein the drive assembly comprises a drive member and two transmission members; the proximal end of each transmission piece is connected with the driving piece, and the distal end of each transmission piece is connected with one connecting part; The driving piece is used for driving the two transmission pieces to move along the axial direction of the sheath tube in opposite directions.
  10. 10. The apparatus of claim 9, wherein the drive assembly further comprises two first rotating members and two second rotating members; The first rotating piece is connected with the driving piece, the second rotating pieces are arranged in one-to-one correspondence with the first rotating pieces, the second rotating pieces are rotatably connected with the corresponding first rotating pieces, and the proximal ends of the transmission pieces are connected with the second rotating pieces.

Description

Electric cutting equipment Technical Field The invention belongs to the field of medical instruments, and particularly relates to an electrotome. Background In minimally invasive surgery, electrotomes are required to be placed into the body through a natural orifice (e.g., the urethra) or a tiny incision in the body. Limited by the anatomy of the human body, the radial dimensions of the device must be tightly controlled to be as small as possible to reduce patient trauma and to facilitate handling. This miniaturized design results in a very narrow working channel or sheath lumen inside the device. Prior art electrotome apparatus, the electrotome of which is generally of annular or similar solid construction. During operation, a doctor cuts out a slice of pathological tissue through high-frequency current. However, there is a significant contradiction between the above-described structure, on the one hand, that it is desirable to have a single cut tissue mass as large as possible in order to increase the cutting efficiency, and, on the other hand, that it is difficult for the cut larger volume of tissue mass to be sucked out of the body directly through the narrow passage via the negative pressure suction system, due to the small size of the device and the narrow passage. In order to solve the problem, the prior art generally adopts two complicated operation modes, namely, repeatedly interrupting cutting, integrally withdrawing the electrotome to empty large tissues, and replacing or additionally placing a tissue grinder after cutting, cutting the tissues and then sucking the cut tissues. Both the two modes lead to complex operation flow and prolonged time, not only increase anesthesia risk and bleeding amount, but also bring heavy operation burden to doctors. Meanwhile, large tissues are difficult to effectively bring out by only circulating flushing liquid, so that the channels are easy to be blocked, and the operation vision and safety are affected. Therefore, how to achieve smooth removal of resected tissue (especially large tissue mass) under the physical limitation of miniaturization and narrow channel of the electrotome is a key technical problem to be solved in the field. Disclosure of Invention In view of the above-mentioned drawbacks of the prior art, an object of the present invention is to provide an electrotome device for solving the problem that the prior art is difficult to remove large pieces of tissue smoothly. To achieve the above and other related objects, the present invention provides an electrotome apparatus comprising an operating mechanism, a sheath and an electrotome electrode, wherein the operating mechanism is connected with a proximal end of the sheath, the electrotome electrode is rotatably connected with a distal end of the sheath, the operating mechanism comprises a driving assembly for driving the electrotome electrode to rotate, the electrotome electrode is used for cutting tissue to be cut and cutting the cut tissue in the cutting process, and a suction channel for sucking the tissue is arranged in the sheath and is used for communicating with an external suction apparatus. The electric cutting electrode comprises two connecting parts and an arc-shaped ring cutting body, wherein the arc-shaped ring cutting body is positioned between the two connecting parts, each connecting part is rotatably connected with the distal end of the sheath tube and connected with the driving assembly, the ring cutting body comprises a nonlinear inner cutting body, an arc-shaped outer cutting body and a plurality of first cutting parts connected with the inner cutting body and the outer cutting body, the first cutting parts are arranged between the inner cutting body and the outer cutting body at intervals, and the first cutting parts are used for cutting cut tissues. Optionally, the cutting surfaces of the inner cutting body, the outer cutting body and the first cutting portion are non-planar. Optionally, the inner cutting body is arc-shaped, and the radius of the inner cutting body is more than or equal to 1/3 of the radius of the sheath tube. Optionally, the inner cutting body, the outer cutting body and the first cutting portion are made of wire, and the ratio of the diameter to the diameter of the sheath is 1:20-1:100. The liquid injection device comprises a sheath tube, a liquid injection sub-channel, a camera, a suction channel, a liquid injection sub-channel and a central axis of the suction channel, wherein the sheath tube is arranged at the outer end of the sheath tube, the camera is arranged at the far end of the sheath tube, the sheath tube is internally provided with the two liquid injection sub-channels, the two liquid injection sub-channels and the camera are arranged at the far end of the sheath tube in a triangular shape under the plane view angle perpendicular to the axial direction of the sheath tube, the camera is positioned above an inlet of the suction channel, and the centra