CN211674523U

CN211674523U - Radio frequency plasma scalpel

Info

Publication number: CN211674523U
Application number: CN201922244136.8U
Authority: CN
Inventors: 董涛; 何朝东; 杨玉山
Original assignee: Chengdu Mechan Electronic Technology Co ltd
Current assignee: Chengdu Mechan Electronic Technology Co ltd
Priority date: 2019-12-13
Filing date: 2019-12-13
Publication date: 2020-10-16
Anticipated expiration: 2029-12-13

Abstract

The utility model discloses a radio frequency plasma scalpel, the electric iron comprises a handle, the blade main part of near-end connection on the handle, the setting is at the electrode subassembly of blade main part distal end and set up on the handle and the power supply cable of being connected with the electrode subassembly electricity, electrode subassembly includes the return circuit utmost point, projecting pole and connect the insulating part separated with return circuit utmost point and emitting pole electrical insulation at blade main part distal end, the projecting pole setting is at the insulating part distal end and wholly is the column along blade main body axis, the inclined plane of distal end for inclining in blade main body axis of projecting pole, the edge of the near-end of projecting pole is equipped with the chamfer. The utility model discloses puncture that can be convenient gets into the tissue, reduces the resistance that the puncture got into the tissue, reduces the sharpness of projecting pole near-end edge, avoids stabbing peripheral tissue taking out the in-process, avoids the near-end edge of projecting pole to produce too strong plasma, avoids causing the accidental injury to non-target tissue, can utilize the distal end inclined plane of projecting pole to carry out the accurate operation when ensureing to perform the operation.

Description

Radio frequency plasma scalpel

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to a radio frequency plasma scalpel.

Background

The low-temperature plasma radio frequency technology is widely applied to electrosurgery, plasma can carry out operations such as cutting, ablation and the like on tissues at a low temperature (40-70 ℃) under radio frequency (100 KHz-2 MHz), molecular bonds are directly broken through decomposed charged particles, the processes of cutting, ablation, hemostasis and the like by thermal effect of common radio frequency are avoided, thermal damage to the tissues is reduced, and therefore the minimally invasive effect is achieved. With the development of plasma technology and the gradual expansion of clinical applications, it is essential to research plasma electrodes capable of meeting various clinical requirements to solve various clinical symptoms.

The existing open type operation and minimally invasive operation coexist in the operation aiming at complex areas such as cervical vertebra, the open type operation has large wound area, long operation time and long recovery time, patients suffer from long pain time and are easy to infect after the operation, the minimally invasive operation has small wound, but the working electrode structure of the currently adopted minimally invasive operation instrument is unreasonable, the plasma generated on the working electrode is unreasonable in distribution, and the non-acting area of the working electrode is easy to generate over-strong plasma to damage peripheral tissues, thereby affecting the operation effect.

SUMMERY OF THE UTILITY MODEL

As used herein, the term "proximal" refers to the end of the device or portion thereof that is closer to the user, and the term "distal" refers to the end of the device or portion thereof that is further from the user.

The utility model discloses the technical problem that will solve and the technical task who provides improve prior art, provide a radio frequency plasma scalpel, solve the minimal access surgery apparatus's among the prior art working pole structure unreasonable, the plasma that produces on the working pole distributes unreasonablely, damages the problem of peripheral tissue easily.

For solving the above technical problem, the technical scheme of the utility model is that:

a radio frequency plasma scalpel comprises a handle, a scalpel body, an electrode assembly and a power supply cable, wherein the scalpel body is connected to the handle at the proximal end, the electrode assembly is arranged at the distal end of the scalpel body, the power supply cable is arranged on the handle and is electrically connected with the electrode assembly, the electrode assembly comprises a loop pole, an emitting pole and an insulating piece, the insulating piece is connected to the distal end of the scalpel body and electrically isolates the loop pole from the emitting pole, the emitting pole is arranged at the distal end of the insulating piece and is integrally columnar along the axis of the scalpel body, the distal end of the emitting pole is an inclined plane inclined to the axis of the scalpel body, and the edge of the proximal end. Radio frequency plasma scalpel structural stability is good, can be favorable to the puncture to get into the tissue, the distal end inclined plane of projecting pole can play the effect that the direction is passed through, reduce the resistance that the puncture got into the tissue, and the distal end inclined plane of projecting pole is compared in conical most advanced sharp-pointed degree less, the tissue is difficult for stabbing, and the edge of the near-end of projecting pole reduces the sharp sharpness of projecting pole near-end edge through setting up the chamfer, avoid stabbing peripheral tissue taking out the in-process, also make simultaneously can produce relatively even plasma on the projecting pole, avoid the near-end edge of projecting pole to produce too strong plasma because the edges and corners is sharp-pointed, avoid the near-end edge of projecting pole to cause the accidental injury to non-target tissue, can utilize the distal end inclined plane of projecting pole to carry out the accurate operation when ensureing.

Furthermore, the edge of the far-end inclined plane of the emitting electrode is provided with a chamfer, so that the sharpness of the edge is reduced, tissues are prevented from being punctured, and the edge of the inclined plane is prevented from generating over-strong plasma.

Furthermore, the included angle between the far end inclined plane of the emitting electrode and the axial line of the knife body is alpha, alpha is more than 0 degree and less than or equal to 30 degrees, the inclined plane is convenient to puncture into tissues, meanwhile, the far end of the emitting electrode is prevented from being too sharp and stabbing the tissues, and the generation of too strong plasma is avoided.

Furthermore, the electrode wire which is used for electrically connecting the emitting electrode with the power supply cable and is arranged in the length direction of the knife body penetrates through the inside of the knife body, the small groove for inserting and connecting the power supply electrode wire is formed in the near end of the emitting electrode, the electrode wire is connected with the small groove in a welding mode, connection stability is good, the emitting electrode is prevented from being bent, deformed and even broken and dropped, use safety is improved, and the service life of the scalpel is guaranteed.

Further, the return circuit is very along the tubular metal resonator of blade main part length direction, and the tubular metal resonator outer wall cladding has insulating cover to the distal end of tubular metal resonator is provided with exposed section, prevents to touch the return circuit utmost point and takes place the wrong electric shock, and the insulating part sets up in the distal end of tubular metal resonator, and the return circuit utmost point both had been used for constituting the blade main part as the electric current return circuit also, simple structure, compactness, and the preparation is convenient, and the return circuit utmost point constitutes bipolar electrode structure with the projecting pole, and the very long and thin tubular metal resonator of return circuit is convenient for bear the weight of the projecting pole and is stretched into to narrow and small region.

Further, the outer wall of the electrode wire is wrapped by an insulating layer, a glue layer which is used for being fixedly bonded with the loop electrode and the insulating part is arranged outside the insulating layer, the structural stability is improved, and meanwhile, gaps are not reserved among the loop electrode, the insulating part and the emitting electrode.

Furthermore, the surface area of the exposed working section of the loop pole is several times larger than that of the emitter, so that a stable loop is formed between the emitter and the loop pole, the treatment effect is guaranteed, the target tissue is accurately removed, and the damage range to the human tissue is reduced.

Furthermore, the handle comprises an outer sleeve and an inner sleeve, the near end of the knife body main body is connected with the inner sleeve, and the inner sleeve is rotatably connected to the outer sleeve by taking the axis of the knife body main body as a rotation center. When performing an operation, the outer sleeve is fixed differently, and can drive the knife body main part to rotate through rotating the inner sleeve, and then the emitting electrode can be along with the rotation of the knife body main part, the orientation of the far-end inclined plane of the emitting electrode changes, is convenient for carry out accurate operation, and improves the convenience and the flexibility of the operation.

Furthermore, a connecting hole for inserting the inner sleeve is formed in the outer sleeve, a sealing ring is arranged between the inner sleeve and the connecting hole to prevent liquid from flowing back to enter the inner sleeve, a snap spring for preventing the inner sleeve from exiting the connecting hole is further arranged between the inner sleeve and the connecting hole, accidental separation between the outer sleeve and the inner sleeve is avoided, and the inner sleeve is ensured to stably rotate in the connecting hole and not to escape.

Furthermore, the outer sleeve is also provided with a threaded hole which is used for installing accessories and is along the axis of the knife body main body.

Compared with the prior art, the utility model discloses the advantage lies in:

the utility model discloses a radio frequency plasma scalpel reduces the sharpness of projecting pole near-end edge, avoids stabbing peripheral tissue in the process of taking out, also makes to produce the plasma relatively evenly on the projecting pole simultaneously, avoids the near-end edge of projecting pole to produce too strong plasma because the edges and corners are sharp, avoids the near-end edge of projecting pole to cause the accidental injury to non-target tissue, can utilize the distal end inclined plane of projecting pole to carry out the accurate operation when guaranteeing to perform the operation;

the utility model can conveniently puncture into the tissue, reduce the resistance of puncturing into the tissue, has small sharp degree of the far end inclined plane of the emitter, is not easy to puncture the tissue, has good structural rigidity, can not generate the situation that the emitter is bent and deformed or even broken and falls when melting, and has good use safety;

the utility model can adjust the inclined plane tip orientation of the emitter under the state that the handle position does not move, is convenient for carrying out precise operation on target tissues, improves the convenience of operation and has good use flexibility;

radio frequency plasma scalpel can be used to human cervical vertebra intervertebral disc pathological change tissue's treatment, collection hemostasis and ablation are as an organic whole, be applicable to the minimal access surgery who exposes not good enough narrow region or the crisscross complex region of nerve, the operation wound is little, has the cutting and melts, solidifies hemostatic ability, the different mode of cooperation host computer (if the cutting melts, solidifies hemostasis) to it is short to have the operation time, and recovery time is fast, and the postoperative is painful few, the characteristics that the complication is few.

Drawings

FIG. 1 is a schematic view of the overall structure of a RF plasma scalpel;

FIG. 2 is a schematic view of detail A in FIG. 1;

FIG. 3 is a schematic view showing the external structure of the electrode assembly;

fig. 4 is a schematic structural view of the handle.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The embodiment of the utility model discloses a radio frequency plasma scalpel, simple structure is convenient for puncture into the tissue in, the resistance of puncture is little, and structural stability is good, also avoids the near-end edge of projecting pole to cause the accidental injury to non-target tissue because the sharp-pointed plasma that produces of edges and corners simultaneously, improves the operation accuracy.

As shown in fig. 1 to 4, a radio frequency plasma scalpel mainly comprises an electrode assembly 1, a handle 3, a power supply cable 4 and a scalpel body 2, wherein the scalpel body 2 is in a linear elongated structure, the proximal end of the scalpel body 2 is connected to the handle 3, the electrode assembly 1 is arranged at the distal end of the scalpel body 2, the electrode assembly 1 is electrically connected with the power supply cable 4 connected to the handle 3, and the power supply cable 4 is a cable with a plug and is used for being connected with an electrosurgical energy device;

the electrode assembly 1 comprises an emitter 11, a return pole 12 and an insulator 13, in this embodiment, the return pole 12 is a metal tube covering the entire length of the blade body 2, preferably a stainless steel round tube, the insulator 13 is disposed at the distal end of the metal tube, the insulator 13 can be made of insulating materials such as insulating ceramics and polytetrafluoroethylene, in this embodiment, the insulator 13 is a through tube along the axial direction of the return pole 12 of the metal tube, the length of the through tube is between 0 and 3mm, the emitter 11 is disposed at the distal end of the insulator 13, the return pole 12 and the emitter 11 are insulated and isolated by the insulator 13, the diameters of the emitter 11, the insulator 13 and the return pole 12 are equal, 0.5mm < the emitter 11 < 1.3mm, and the error of the diameters of the emitter 11, the insulator 13 and the return pole 12 is controlled within 1 mm. The outer wall of the loop pole 12 is provided with an insulating sleeve 14, the insulating sleeve 14 adopts a heat-shrinkable sleeve, a naked working section is arranged on one side of the far end of the loop pole 12, the loop pole 12 coated with the insulating sleeve 14 is used as a current loop and also forms the knife body main body 2, the working pole and the loop pole form a bipolar electrode structure, current flows between the working pole and the loop pole, a negative plate is not needed, no current flows through a human body, the operation precision is higher and the reliability is better compared with the monopolar electrode structure, the condition that the cut tissue is too shallow or too deep can be avoided, the power consumption is lower, the wound is smaller, and the postoperative recovery is facilitated;

in order to facilitate puncturing into tissues, the emitter 11 adopted in the embodiment is columnar, preferably cylindrical, along the axis of the knife body 2, the far end of the emitter 11 is an inclined plane inclined to the axis of the knife body 2, the inclined plane can play a role in guiding transition, the included angle between the inclined plane of the far end of the emitter 11 and the axis of the knife body 2 is alpha, alpha is larger than 0 degree and smaller than or equal to 30 degrees, the angle of the inclined plane inclined to the axis of the knife body 2 is larger, so that the sharp degree of the inclined plane of the far end of the emitter is smaller, and the tissues are prevented from being punctured; the edge of the near end of the emitter 11 is provided with a chamfer, the chamfer is preferably a round angle, the sharpness of the edge of the near end of the emitter is reduced, peripheral tissues are prevented from being punctured in the taking-out process, meanwhile, plasma generated by the near end of the emitter is relatively uniform, the phenomenon that the edge of the near end of the emitter generates excessively strong plasma due to sharp edges and corners is avoided, the edge of the far end inclined plane of the emitter 11 is also provided with a chamfer, the sharpness degree of the edge is reduced, tissues are prevented from being punctured, and the edge of the inclined plane is also prevented from generating excessively strong plasma; the surface area of the exposed working section of the loop electrode 12 is a plurality of times larger than that of the emitter, so that the plasma is ensured to be concentrated on the emitter, the waste tissue is accurately removed, and the damage range to the human tissue is reduced;

the electrode wire 15 extending from the near end to the far end of the loop electrode 12 is arranged in the loop electrode 12 of the metal tube, the outer portion of the electrode wire is coated with an insulating layer 16, the insulating layer 16 adopts a heat-shrinkable tube, the electric insulation between the electrode wire 15 and the loop electrode 12 is guaranteed through the insulating layer 16, the electrode wire is used for electrically connecting the emitter 11 and the power supply cable 4, the electrode wire also plays a role of fixing the emitter 11, the electrode wire penetrates through the insulating part 13 and then is inserted into a small groove 111 formed in the near end of the emitter 11, the electrode wire is connected with the small groove in a welding mode, the connection stability is good, the situation that the emitter is bent, deformed and even broken and dropped is avoided, the use safety is improved, and the service; and set up the glue film through the mode of beating glue between 16 outer walls of insulating layer and return circuit utmost point 12, insulating part 13 and fix, improve structural stability, make simultaneously not leave the gap between return circuit utmost point, insulating part, the projecting pole.

In this embodiment, handle 3 is for using 2 axes of blade body main part as the revolution mechanic of rotation center, specifically does, handle 3 divide into fixed part and rotation portion along the axis direction of blade body main part 2, sets up the rotation hole along 2 axis direction of blade body main part on the fixed part, and rotation portion rotates to be connected in rotating the hole, and the near-end of blade body main part 2 is connected on rotation portion to can be in the most advanced orientation of inclined plane of the condition adjustment projecting pole of unmovable handle, be convenient for carry out accurate operation to target tissue, improve the convenience and the flexibility of operation.

The handle 3 comprises an outer sleeve 31 and an inner sleeve 32, the proximal end of the knife body 2 is connected with the inner sleeve 32, the inner sleeve 32 is rotatably connected to the outer sleeve 31 by taking the axis of the knife body 2 as a rotation center, in the embodiment, the inner sleeve 32 is integrally in a tubular shape along the axial direction of the knife body 2, the electrode wire 15 is welded with the power supply cable 4 in the inner sleeve 32 and fixed in the inner sleeve 32, the outer sleeve 31 is provided with a connecting hole 33 for inserting the inner sleeve 32, the axial direction of the connecting hole 33 is along the axial direction of the knife body 2, the periphery of the inner sleeve 32 is sleeved with a sealing ring 34, after the inner sleeve 32 is inserted into the connecting hole 33, the sealing ring 34 is attached to the inner wall of the connecting hole 33 to keep good sealing performance during rotation and prevent liquid from flowing back into the inner sleeve, the periphery of the inner sleeve 32 is further sleeved with a snap spring 35, the inner wall of the, the snap spring 35 is supported in the annular snap groove so as to prevent the inner sleeve from withdrawing from the connecting hole 33, ensure the stable connection relationship between the outer sleeve 31 and the inner sleeve 32 and avoid the situation that the inner sleeve 32 accidentally escapes when rotating relative to the outer sleeve 31. The outer sleeve 31 is also provided with a threaded bore 36 along the axis of the blade body 2 for mounting an attachment, such as for establishing a passage attachment for the penetration of the blade body.

The above is only a preferred embodiment of the present invention, and it should be noted that the above preferred embodiment should not be considered as limiting the present invention, and the protection scope of the present invention should be subject to the scope defined by the claims. It will be apparent to those skilled in the art that various modifications and enhancements can be made without departing from the spirit and scope of the invention, and such modifications and enhancements are intended to be within the scope of the invention.

Claims

1. A radio frequency plasma scalpel comprises a handle (3), a scalpel body (2) with a near end connected to the handle (3), an electrode assembly (1) arranged at the far end of the scalpel body (2), and a power supply cable (4) arranged on the handle (3) and electrically connected with the electrode assembly (1), and is characterized in that the electrode assembly (1) comprises a loop pole (12), an emitter (11) and an insulating piece (13) which is connected to the far end of the scalpel body (2) and electrically insulates and separates the loop pole (12) from the emitter (11), the emitter (11) is arranged at the far end of the insulating piece (13) and is integrally columnar along the axis of the scalpel body (2), the far end of the emitter (11) is an inclined plane inclined to the axis of the scalpel body (2), and a chamfer is arranged on the edge of the near end of the emitter (11).

2. The rf plasma scalpel according to claim 1, wherein the edge of the distal bevel of the emitter (11) is chamfered.

3. The RF plasma scalpel according to claim 1, wherein the included angle between the distal bevel of the emitter (11) and the axis of the main body (2) is α, and α is greater than 0 ° and less than or equal to 30 °.

4. The radio frequency plasma scalpel according to claim 1, wherein the electrode wire (15) used for electrically connecting the emitter (11) and the power supply cable (4) along the length direction of the scalpel body (2) penetrates through the scalpel body (2), and a small groove (111) for inserting and connecting the electrode wire (15) is formed in the near end of the emitter (11).

5. The RF plasma scalpel according to claim 4, wherein the return electrode (12) is a metal tube extending along the length of the main body (2), the outer wall of the metal tube is covered with an insulating sheath (14), and the distal end of the metal tube is provided with an exposed section, and the insulating member (13) is provided at the distal end of the metal tube.

6. The radio frequency plasma scalpel according to claim 5, wherein the outer wall of the electrode wire (15) is coated with an insulating layer (16), and a glue layer for bonding and fixing the electrode wire with the loop electrode (12) and the insulating member (13) is arranged outside the insulating layer (16).

7. The RF plasma surgical knife according to any one of claims 1 to 6, wherein the handle (3) comprises an outer sleeve (31) and an inner sleeve (32), the proximal end of the knife body (2) is connected with the inner sleeve (32), and the inner sleeve (32) is rotatably connected to the outer sleeve (31) with the axis of the knife body (2) as a rotation center.

8. The RF plasma scalpel according to claim 7, wherein the outer sleeve (31) is provided with a connecting hole (33) for inserting the inner sleeve (32), a sealing ring (34) is arranged between the inner sleeve (32) and the connecting hole (33), and a snap spring (35) for preventing the inner sleeve (32) from exiting the connecting hole (33) is arranged between the inner sleeve (32) and the connecting hole (33).

9. The RF plasma scalpel according to claim 7, wherein the outer sleeve (31) is further provided with a threaded hole (36) along the axis of the blade body (2) for mounting an accessory.