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CN-121971156-A - Low-temperature plasma electrode for soft endoscope

CN121971156ACN 121971156 ACN121971156 ACN 121971156ACN-121971156-A

Abstract

The invention discloses a low-temperature plasma electrode for a flexible endoscope, which belongs to the technical field of medical instruments and comprises a first electrode assembly, first insulating ceramics and a first loop electrode, wherein a plurality of first grooves are uniformly formed in the outer circumference of the front end of the first working electrode, a working electrode cavity is formed in the rear end of the first working electrode along the length direction of the first working electrode, a working electrode cable is fixedly welded in the working electrode cavity, the working electrode cable extends in a direction deviating from the first working electrode, and the loop electrode cable extends in a direction deviating from the first working electrode. Through the parameter design of the first working electrode and the first loop electrode, and the second working electrode and the first groove and the second groove on the second loop electrode, the low-temperature cutting, ablation, gasification and electrocoagulation of human tissues under the soft endoscope are realized, the operation temperature is low, the tissue coagulation layer is controllable within 2mm, and the problems of tissue carbonization and deep electrocoagulation depth caused by the high temperature of the existing electrode are effectively avoided.

Inventors

  • ZHOU ZHOU
  • YANG JIAPENG
  • YOU CHUANYUAN
  • XUE KANG
  • YANG XIAOFENG
  • WANG BAO

Assignees

  • 陕西西蜀新创医疗科技有限公司

Dates

Publication Date
20260505
Application Date
20260227

Claims (10)

  1. 1. A low temperature plasma electrode for use under a flexible endoscope, comprising: The first electrode assembly comprises a first working electrode (1), wherein a plurality of first grooves are uniformly formed in the outer circumference of the front end of the first working electrode (1) so as to form electric field excitation plasma and store normal saline, the first grooves are formed along the length direction of the first working electrode (1), a working electrode cavity (11) is formed in the rear end of the first working electrode (1) along the length direction of the first working electrode, a working electrode cable (12) is fixedly welded in the working electrode cavity (11), and the working electrode cable (12) extends in a direction deviating from the first working electrode (1); the circuit electrode cable comprises a first insulating ceramic (2), wherein a first insulating ceramic circuit electrode cable cavity (21) is formed in the outer circumferential surface of the first insulating ceramic (2) along the length direction of the first insulating ceramic circuit electrode cable cavity, a capillary steel pipe (14) is arranged at the inner front end part of the first insulating ceramic circuit electrode cable cavity (21), a circuit electrode cable (13) is welded in the capillary steel pipe (14), the circuit electrode cable (13) extends in the direction deviating from a first working electrode (1), a first insulating ceramic working electrode cable cavity (22) is formed in the center of the first insulating ceramic (2) in a penetrating manner along the length direction of the first insulating ceramic, the rear end of the first working electrode (1) is positioned in the first insulating ceramic working electrode cable cavity (22), and an inner sheath pipe (15) is sleeved outside the working electrode cable (12) and the circuit electrode cable (13); the first loop electrode (3) is fixedly sleeved on the first insulating ceramic (2), and the capillary steel tube (14) is welded and fixed with the first loop electrode (3); The included angle B 0 at two sides of the first groove is 5-90 degrees, the protruding length X between two first grooves is 0.05-0.5mm, the distance between the center of the first working electrode (1) and the first grooves is Ymm, the groove depth of the first grooves is Zmm, Z/Y is more than or equal to 0.15, a plurality of first insulating ceramic water inlets (23) are formed in the first insulating ceramic (2) along the length direction of the first insulating ceramic water inlets, the first insulating ceramic water inlets (23) are connected with first water outlets, the first water outlets extend out of the circumferential wall of the first loop electrode (3), and the included angle A 0 between the center line of each first water outlet and the axis of the first working electrode (1) is less than or equal to 90 degrees.
  2. 2. The cryoplasma electrode for flexible endoscope according to claim 1, further comprising a second electrode assembly, wherein the second electrode assembly comprises a second working electrode (101) and a second loop electrode (301), a plurality of second grooves are formed at the ends of the second working electrode (101) and the second loop electrode (301), the second working electrode (101) and the second loop electrode (301) are at least two, and the angle between the plurality of second working electrodes (101) is a ratio of 360 ° to the number of second working electrodes (101), and the angle between the plurality of second loop electrodes (301) is a ratio of 360 ° to the number of second loop electrodes (301); working electrode and loop electrode cavities (10) are formed in the bottoms of the second working electrode (101) and the second loop electrode (301), and working electrode cables (12) or loop electrode cables (13) are welded in the working electrode and loop electrode cavities (10); Wherein the included angle B 0 at two sides of the second groove is 5-90 degrees, the protruding length X between the two second grooves is 0.05-0.5mm, the distance between the center of the second working electrode (101) and the second groove is Ymm, the groove depth of the second groove is Zmm, and Z/Y is more than or equal to 0.15.
  3. 3. The low-temperature plasma electrode for a flexible endoscope according to claim 2, further comprising a second insulating ceramic (201), wherein a plurality of fixing grooves are uniformly formed in the second insulating ceramic (201) along the circumferential direction of the second insulating ceramic, second insulating ceramic clamping blocks (2014) are respectively arranged at two sides in the fixing grooves, the second working electrode (101) and the second circuit electrode (301) are respectively arranged in the plurality of fixing grooves and are fixedly embedded with the corresponding second insulating ceramic clamping blocks (2014), a second insulating ceramic working electrode cable cavity (2012) and a second insulating ceramic circuit electrode cable cavity (2011) are formed in the second insulating ceramic (201) in a penetrating mode, the second insulating ceramic working electrode cable cavity (2012) and the second insulating ceramic circuit electrode cable cavity (2011) correspond to the number of the second working electrode (101) and the second circuit electrode (301) respectively, the working electrode cable (12) penetrates through the second insulating ceramic working electrode cable cavity (2012), and the second circuit cable (13) penetrates through the second insulating ceramic working electrode cable cavity (2011), and the second insulating ceramic circuit cable (13) penetrates through the second insulating ceramic cable cavity (2011).
  4. 4. A low-temperature plasma electrode for a flexible endoscope according to claim 3, wherein the first insulating ceramic (2) and the second insulating ceramic (201) are respectively sleeved with an outer sheath tube (4), a plurality of groups of second insulating ceramic fixing ribs (2015) are arranged on the second insulating ceramic (201), a plurality of groups of first insulating ceramic fixing ribs (25) are arranged on the first insulating ceramic (2), and the first insulating ceramic fixing ribs (25) and the second insulating ceramic fixing ribs (2015) are respectively in interference fit with the inner wall of the corresponding outer sheath tube (4).
  5. 5. The low-temperature plasma electrode for a flexible endoscope according to claim 4, wherein a second insulating ceramic water inlet hole (2013) is formed in the center of the second insulating ceramic (201) in a penetrating manner along the length direction of the second insulating ceramic, a plurality of second water outlet holes are uniformly formed in the circumferential direction of the second insulating ceramic (201), the second water outlet holes are respectively communicated with the second insulating ceramic water inlet hole (2013), and an included angle A 0 between the center line of the second water outlet hole and the axis of the second working electrode (101) is less than or equal to 90 degrees.
  6. 6. The low-temperature plasma electrode for a flexible endoscope according to claim 5, further comprising a handle assembly (6), wherein the handle assembly (6) comprises an infusion seat (62), a connecting piece (61) is arranged in the front end of the infusion seat (62), a connecting piece ridge (611) is arranged at the front end of the connecting piece (61), one end of the outer sheath tube (4) deviating from the first working electrode (1) or the second working electrode (101) is sleeved at the front end of the connecting piece (61), and the inner wall of the outer sheath tube (4) is in interference fit with the connecting piece ridge (611); the front end of the transfusion seat (62) is provided with a transfusion seat joint (622), a protection sleeve (5) is fixed on the transfusion seat joint (622) in a heat shrinkage way, and the protection sleeve (5) is sleeved on the outer sheath tube (4); the infusion seat (62) is internally provided with an infusion seat inner cavity (623), the rear end of the connecting piece (61) is communicated with the infusion seat inner cavity (623), and the working electrode cable (12), the loop electrode cable (13) and the inner sheath tube (15) penetrate through the infusion seat inner cavity (623).
  7. 7. A low temperature plasma electrode for a flexible endoscope according to claim 6, wherein the outer sheath tube (4) and the protective sleeve tube (5) are flexible tubes.
  8. 8. The low-temperature plasma electrode for a flexible endoscope according to claim 7, further comprising a bipolar plug assembly (7), wherein the bipolar plug assembly (7) comprises a housing (75), an identification plate (73) is fixed in the housing (75), and two mutually insulated plugs (74) are further arranged in the housing (75); A working electrode cable lead (71) is welded on a plug (74) close to the identification plate (73), and the working electrode cable lead (71) is welded and fixed with the working electrode cable (12); the circuit electrode cable lead (72) is welded on the plug (74) deviating from the identification plate (73), the circuit electrode cable lead (72) is welded and fixed with the circuit electrode cable (13), and the working electrode cable lead (71) is arranged in an insulating manner with the circuit electrode cable lead (72).
  9. 9. The low-temperature plasma electrode for a flexible endoscope according to claim 8, wherein the infusion seat (62) is further provided with an infusion seat liquid injection port (621) communicated with an infusion seat inner cavity (623), the infusion seat liquid injection port (621) is connected with a liquid injection pipe (8), the liquid injection pipe (8) is connected with the infusion seat liquid injection port (621) through a luer conical joint, and one end of the liquid injection pipe (8) away from the infusion seat liquid injection port (621) is connected with a plasma excitation device (9).
  10. 10. The low-temperature plasma electrode for a flexible endoscope according to claim 9, wherein the transfusion seat (62) further comprises a fixed rod (64) and a holding rod (65), a holding rod inner cavity (651) is formed in the holding rod (65), a holding rod thread head (652) is formed at the front end of the holding rod (65), a transfusion seat thread head (624) is formed at the rear end of the transfusion seat (62), and the holding rod (65) is in threaded connection with the transfusion seat (62) through the holding rod thread head (652) and the transfusion seat thread head (624); The fixing rod (64) comprises a push rod (641), the rear end of the push rod (641) is inserted into the inner cavity (651) of the holding rod, the front end of the push rod (641) is provided with a fixing rod groove (642), a silica gel ring (63) is arranged in the fixing rod groove (642), and the front end of the push rod (641) is in interference fit with the inner cavity (623) of the infusion seat through the silica gel ring (63).

Description

Low-temperature plasma electrode for soft endoscope Technical Field The invention relates to the technical field of medical appliances, in particular to a low-temperature plasma electrode for a flexible endoscope. Background Currently, energy-containing surgical electrodes are gradually replacing traditional scalpels in the surgical field, such as high-frequency electrosurgical electrodes, and the use under surgery, minimally invasive surgery, and flexible endoscopes is rapidly developing. However, most of high-frequency operation electrodes used under the prior soft endoscope are monopolar products, and have no function of exciting plasma, so that when human tissues are cut, electrically coagulated, ablated and gasified, the temperature is usually high, the thermal damage is large, and meanwhile, irreversible delayed perforation and other adverse events are caused along with tissue carbonization and deep electric coagulation depth. In addition, some plasma electrode products exist in the market at present, because the structure is limited by the structure, most of the structure is a rigid part, most of the structure is used under surgery or a cavity mirror, the structure cannot be used under a soft endoscope, such as the Chinese patent with the application number of 202111572375.1, the invention name is a multi-runner circulating water outlet low-temperature plasma multifunctional surgical knife head, which comprises a handle, a steel pipe, a suction pipe, a ceramic head, a cutting hemostatic electrode, a cable, a suction hose and a water injection hose, wherein an installation cavity is arranged in the handle, one end of the steel pipe is arranged in the installation cavity, the other end of the steel pipe is fixed with the ceramic head, a plurality of water outlet gaps are reserved between the outer wall of the ceramic head and the inner wall of the steel pipe, a circle of circulating water tank is arranged on the peripheral surface of the ceramic head, and the circulating water tank is communicated with the water outlet gaps. The surgical knife head product is only used for surgery or endoscopic surgery because the outer tube is a steel tube, and cannot be used for a soft endoscope, meanwhile, the water outlet mode and the ceramic head structure of the surgical knife head product lead to larger volume, and the working channel of the soft endoscope is smaller, and the electrode under the structure is smaller in theory, so that the practical use efficiency cannot meet the clinical requirement. The electrode capable of realizing the low-temperature effect is needed under the soft endoscope, so that the damage of a patient can be reduced during operation, particularly, the low-temperature coagulation can be realized during the electric coagulation hemostasis, the thermal damage is controllable, and the problem of delayed perforation is solved from the source. If the low-temperature plasma electrode is provided, on one hand, the low-temperature plasma electrode can benefit patients, and on the other hand, the low-temperature plasma electrode can also generate larger economic value. In view of the above, the present invention is specifically proposed to solve the above-mentioned technical problems. Disclosure of Invention The invention aims to provide a low-temperature plasma electrode for a flexible endoscope, which aims to solve the technical problems that the temperature of the electrode is high and the thermal damage is large when the plasma electrode in the prior art is used under the flexible endoscope. In order to achieve the above purpose, the present invention provides the following technical solutions: A low temperature plasma electrode for use under a flexible endoscope, comprising: The first electrode assembly comprises a first working electrode, wherein a plurality of first grooves are uniformly formed in the outer circumference of the front end of the first working electrode so as to form electric field excited plasma and store normal saline, the plurality of first grooves are formed along the length direction of the first working electrode, a working electrode cavity is formed in the rear end of the first working electrode along the length direction of the first working electrode, a working electrode cable is fixedly welded in the working electrode cavity, and the working electrode cable extends in a direction deviating from the first working electrode; The first insulating ceramic is provided with a first insulating ceramic loop electrode cable cavity along the length direction of the outer circumferential surface, a capillary steel pipe is arranged at the front end part in the first insulating ceramic loop electrode cable cavity, a loop electrode cable is welded in the capillary steel pipe, the loop electrode cable extends in the direction deviating from the first working electrode, the first insulating ceramic center penetrates through the first insulating ceramic working electrode cable cav