CN219461379U - Plasma surgical electrode - Google Patents

Abstract

The utility model discloses a plasma surgical electrode, which comprises a tool bit assembly, wherein the tool bit assembly comprises: an electrically conductive inner cutter bar; the conductive outer cutter bar is sleeved outside the inner cutter bar; an insulating spacer disposed between the inner and outer cutter bars; and the insulating isolating head is arranged between the front end part of the inner cutter bar and the front end part of the outer cutter bar and is used for enabling the front end part of the inner cutter bar to be coaxial with the front end part of the outer guide rod. According to the utility model, the isolation head is additionally arranged between the inner cutter bar and the outer cutter bar, so that the consistency and coaxiality of the distance between the inner cutter bar and the outer cutter bar are ensured, and the plasma generated by the plasma operation electrode in the working process is more uniform, so that the operation efficiency and effect are improved.

Description

Plasma surgical electrode

Technical Field

The utility model relates to the technical field of medical equipment, in particular to a plasma operation electrode.

Background

The plasma operation electrode is an electrosurgical knife utilizing low temperature plasma technology, and can be used for soft tissue dissection, excision, ablation, hemostasis and desiccation in surgical operation. The tool bit of the plasma operation electrode in the prior art comprises an inner tool bar and an outer tool bar sleeved outside the inner tool bar, and insulation treatment is carried out between the inner tool bar and the outer tool bar through an isolation tube. However, because the insulating tube is thinner hose, the distance between interior cutter arbor and the outer cutter arbor is very near, can produce the dislocation between interior cutter arbor and the outer cutter arbor when the tool bit is longer, leads to the tool bit each position of interior cutter arbor and the inconsistent distance between the tool bit of outer cutter arbor to lead to the inhomogeneous, cutting inefficiency of plasma that produces.

Disclosure of Invention

Accordingly, it is necessary to provide a plasma surgical electrode in order to solve the above-described problem of non-uniformity of plasma generated due to non-uniformity of distances between respective positions of the tool bit of the inner tool bit and the tool bit of the outer tool bit.

A plasma surgical electrode comprising a tool bit assembly, the tool bit assembly comprising: an electrically conductive inner cutter bar; the conductive outer cutter bar is sleeved outside the inner cutter bar; an insulating spacer disposed between the inner and outer cutter bars; and the insulating isolating head is arranged between the front end part of the inner cutter bar and the front end part of the outer cutter bar and is used for enabling the front end part of the inner cutter bar to be coaxial with the front end part of the outer cutter bar.

According to the plasma operation electrode, the isolation head is additionally arranged between the inner cutter bar and the outer cutter bar, so that the consistency and coaxiality of the distance between the inner cutter bar and the outer cutter bar are ensured, and plasma generated in the working process of the plasma operation electrode is more uniform, and the operation efficiency and effect are improved.

In one embodiment, the isolating head is of a cylindrical structure, a first matching surface matched with the outer wall surface of the inner cutter bar is arranged on the inner wall surface of the isolating head, a second matching surface matched with the inner wall of the outer cutter bar is arranged on the outer wall surface of the isolating head, and the central axis of the first matching surface coincides with the central axis of the second matching surface.

In one embodiment, the front end of the inner cutter bar is provided with a flange extending radially outwards, and the front end surface of the isolating head abuts against the back surface of the flange.

In one embodiment, the width of the flange is less than the thickness of the spacer head.

In one embodiment, the outer wall surface of the isolating head before the second mating surface protrudes radially outwards relative to the second mating surface to form a limiting step, and the front end surface of the outer cutter bar abuts against the end surface of the limiting step.

In one embodiment, the thickness of the outer cutter bar is greater than the height of the limit step.

In one embodiment, the isolating piece is of a tubular structure, and the isolating piece is sleeved on the inner cutter bar.

In one embodiment, the inner wall of the spacer head behind the first mating surface is recessed radially inward relative to the first mating surface to form a receiving slot into which the front end of the spacer is inserted.

In one embodiment, a water injection channel is formed between the outer cutter bar and the partition, and a water outlet communicated with the water injection channel is formed in the front end of the outer cutter bar in the radial direction.

In one embodiment, the bit assembly further comprises an insulating tube sleeved on the exterior of the outer cutter bar.

Drawings

FIG. 1 is a schematic perspective view of a plasma-surgical electrode in one embodiment of the utility model;

FIG. 2 is a schematic enlarged partial view at A;

FIG. 3A is a perspective view of a spacer head according to one embodiment of the present utility model;

FIG. 3B is a schematic perspective view of another view of the spacer according to one embodiment of the present utility model;

fig. 4 is a cross-sectional view of fig. 2.

Reference numerals:

10. a cutter head assembly;

11. an inner cutter bar;

111. flanging;

12. an outer cutter bar;

121. a water outlet;

13. a spacer;

14. an isolation head;

141. a first mating surface;

142. a second mating surface;

143. a limit step;

144. a receiving groove;

p, a water injection channel;

100. a water injection assembly;

200. and a suction assembly.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Fig. 1 is a schematic perspective view of a plasma-surgical electrode in one embodiment of the present utility model, fig. 2 is an enlarged partial schematic view of fig. 1 at a, referring to fig. 1 and 2, the plasma-surgical electrode including a cutter head assembly 10, the cutter head assembly 10 comprising: the cutter comprises an inner cutter bar 11, an outer cutter bar 12 sleeved outside the inner cutter bar 11, a spacer 13 (fig. 4) arranged between the inner cutter bar 11 and the outer cutter bar 12, and a spacer head 14 arranged between the front end part of the inner cutter bar 11 and the front end part of the outer cutter bar 12. The conductive inner cutter bar 11 and the conductive outer cutter bar 12 are isolated by an insulating separator 13 to avoid a short circuit between the two, wherein any one of the electrodes conducted by the inner cutter bar 11 and the outer cutter bar 12 can be an excitation electrode, and the other electrode is a loop electrode, which is not limited in the embodiment. By arranging the insulating spacer head 14 between the front end part of the inner cutter bar 11 and the front end part of the outer cutter bar 12, the stable distance between the inner cutter bar 11 and the outer cutter bar 12 can be kept, and the coincidence between the central axis of the front end part of the inner cutter bar 11 and the central axis of the front end part of the outer cutter bar 12 is better, so that the plasma body can be excited more uniformly in the using process, and the cutting efficiency of the operation is improved.

In one embodiment, the front end portion of the inner cutter bar 11 is provided with a flange 111 extending outward, and the front end surface of the spacer head 14 abuts against the back surface of the flange 111, forming a positioning of the front end portion of the spacer head 14 on the front side in the axial direction. The front surface of the flanging 111 is a surgical electrode knife surface.

Preferably, the width (height in the radial direction) of the flange 111 is smaller than the thickness of the spacer head 14, ensuring the area ratio between the working surface of the inner cutter bar 11 and the outer cutter bar 12, thereby ensuring the maximum efficiency of plasma generation therebetween and ensuring the working efficiency of the surgical electrode.

Fig. 3A is a perspective view of one view of the spacer according to one embodiment of the present utility model, fig. 3B is a perspective view of another view of the spacer according to one embodiment of the present utility model, and referring to fig. 3A and 3B, the spacer 14 is illustrated as a cylindrical structure, the inner wall surface of the spacer 14 is provided with a first mating surface 141 mating with the outer wall surface of the inner cutter bar 11, the outer wall surface of the spacer 14 is provided with a second mating surface 142 mating with the inner wall of the outer cutter bar 12, and the central axis of the first mating surface 141 coincides with the central axis of the second mating surface 142. Alternatively, the spacer head 14 may be formed of a plurality of spacers that function as spacer supports. The spacer 14 of the present utility model is made of PVC material.

Referring to fig. 3A, 3B and 4 simultaneously, the outer wall surface of the spacer head 14 in front of the second mating surface 142 protrudes outwardly with respect to the second mating surface 142 to form a limiting step 143, and the front end surface of the outer cutter bar 12 abuts against the end surface of the limiting step 143, reducing the radial dimension of the cutter head assembly. The spacer head 14 is firmly positioned in the axial direction by the abutment of the front end face of the spacer head 14 against the back face of the flange 111 and the abutment of the front end face of the outer cutter bar 12 against the end face of the limit step 143 of the spacer head 14.

According to the cutter head assembly, when the cutter head assembly is assembled, the isolating piece 13 is sleeved on the inner cutter bar 11, the isolating head 14 is mounted on the front end of the inner cutter bar 11, and the outer cutter bar 12 is mounted on the isolating head 14, so that the production assembly speed is high, the consistency of products after the assembly is finished is good, the axial gaps of the inner cutter bar and the outer cutter bar are consistent, water can not leak from the gaps, plasma generated in the working process is uniform, inconsistent output condition can not occur, and the safety of patients and doctors is ensured.

In one embodiment, the inner wall of the spacer head 14 behind the first mating surface 141 is recessed inward relative to the first mating surface 141 to form a receiving groove 144, the front end of the spacer 13 is inserted into the receiving groove 144, and the wall surface of the receiving groove 144 presses the front end portion of the spacer 13 covered by the receiving groove 144, so that a better sealing effect is achieved by using the elasticity of the spacer 13. By arranging the containing groove 144 to contain the front end of the isolation piece 13, on one hand, the isolation piece 13 can be better positioned so as to achieve better insulation effect; on the other hand, the clearance path between the front end parts of the cutter head assembly can be more tortuous, and when physiological saline is injected, the physiological saline is less likely to leak from the clearance, so that a better sealing effect is achieved.

Preferably, the thickness of the outer cutter bar 12 is larger than the height of the limiting step 143, so that the limiting step 143 can not block the plasma circulation between the inner cutter bar 11 and the outer cutter bar 12, and the working efficiency of the plasma is ensured.

Preferably, the spacer 13 is a tubular structure, and the spacer 13 is sleeved on the inner cutter bar 11.

Referring to fig. 4, a water injection channel P is formed between the outer cutter bar 12 and the spacer 13 at a distance, and a water outlet 121 communicating with the water injection channel P is formed at the front end of the outer cutter bar 12. The water outlet 121 may be plural.

The tool bit assembly 10 further includes an insulation tube 15, the insulation tube 15 being sleeved on the exterior of the outer cutter bar 12 for insulation.

Referring to fig. 1, the plasma surgical electrode of the present utility model further comprises a water injection assembly 100 and a suction assembly 200, wherein a water injection channel P formed between the outer cutter bar 12 and the separator 13 is connected with a water injection pipe of the water injection assembly 100, a medium-pass structure of the inner cutter bar 11 is connected with the suction assembly 200, and waste liquid and residues are sucked through a negative pressure device. The plasma operation electrode generates plasma through the voltage difference between the inner cutter bar and the outer cutter bar to perform operation.

The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The foregoing examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (10)

1. A plasma surgical electrode comprising a tool bit assembly, the tool bit assembly comprising:

an electrically conductive inner cutter bar;

the conductive outer cutter bar is sleeved outside the inner cutter bar;

an insulating spacer disposed between the inner and outer cutter bars;

characterized by further comprising:

and the insulating isolating head is arranged between the front end part of the inner cutter bar and the front end part of the outer cutter bar and is used for enabling the front end part of the inner cutter bar to be coaxial with the front end part of the outer cutter bar.

2. The plasma surgical electrode according to claim 1, wherein the spacer head has a cylindrical structure, a first mating surface mated with an outer wall surface of the inner cutter bar is provided on an inner wall surface of the spacer head, a second mating surface mated with an inner wall of the outer cutter bar is provided on an outer wall surface of the spacer head, and a central axis of the first mating surface coincides with a central axis of the second mating surface.

3. The plasma surgical electrode according to claim 2, wherein a front end portion of the inner cutter bar is provided with a flange extending radially outward, and a front end surface of the spacer head abuts on a back surface of the flange.

4. A plasma surgical electrode according to claim 3, wherein the width of the cuff is less than the thickness of the spacer head.

5. A plasma surgical electrode according to claim 3, wherein an outer wall surface of the spacer in front of the second mating surface protrudes radially outwardly relative to the second mating surface to form a stop step, a front end surface of the outer cutter bar abutting an end surface of the stop step.

6. The plasma surgical electrode of claim 5, wherein the thickness of the outer cutter bar is greater than the height of the limiting step.

7. The plasma surgical electrode of claim 2, wherein the spacer is a tubular structure and the spacer is sleeved on the inner cutter bar.

8. The plasma surgical electrode of claim 7, wherein an inner wall of said spacer head behind said first mating surface is recessed radially inward relative to said first mating surface to form a receiving slot into which a leading end of said spacer is inserted.

9. The plasma surgical electrode according to claim 7, wherein a water injection channel is formed between the outer cutter bar and the spacer, and a water outlet communicating with the water injection channel is radially provided at a front end of the outer cutter bar.

10. The plasma surgical electrode of any one of claims 1-9, wherein the tool bit assembly further comprises an insulating tube sleeved on an exterior of the outer tool bar.