CN220459389U - Multi-strand electrode for lithotripsy - Google Patents

Abstract

The utility model discloses a multi-strand electrode for stone breaking, which relates to the technical field of stone breaking equipment and comprises a plug and an electrode wire which are connected with each other, wherein the electrode wire comprises a negative electrode wire, a positive electrode wire and a first insulating layer, and the first insulating layer is coated outside the negative electrode wire and the positive electrode wire; the surface of the negative electrode wire is provided with a negative electrode insulating layer, and the surface of the positive electrode wire is provided with a positive electrode insulating layer; at least 1 strand of negative electrode wire or positive electrode wire is arranged, and the negative electrode wire and the positive electrode wire are mutually spirally wound into a whole; and a plurality of filling pieces are additionally arranged and filled between the negative electrode wire, the positive electrode wire and the first insulating layer, and the filling pieces are uniformly arranged along the length direction of the electrode wire. By designing the anode-cathode juxtaposition structure into a twist pattern, a filling piece is arranged between the first insulating layer and the electrode wire, so that the overall strength and bending resistance of the electrode wire are improved, the overall rigidity of the electrode is improved under the condition that the overall outer diameter of the electrode is not basically increased, and the experience of a user is improved.

Description

Multi-strand electrode for lithotripsy

Technical Field

The utility model relates to the technical field of equipment for stone breaking, in particular to a multi-strand electrode for stone breaking.

Background

Calculus in human body is usually found in the gall bladder, kidney, bladder and other parts, and the cause of the calculus is complex, if the calculus is not treated in time, the calculus can seriously threaten the health of people. The commonly used in vivo lithotripter for endoscope is a device for directly introducing lithotripter energy into a body through the examination channels of the endoscope such as a fiber choledochoscope, a hard cholecystoscope, a duodenoscope, a gastroscope, a cystoscope, a ureteroscope, a percutaneous nephroscope and the like, and releasing impact wave energy aiming at the surface of the lithotripter so as to break the lithotripter. The shock wave energy is directionally conducted by the discharge between the positive and negative electrodes.

The liquid-electric lithotripter is a safe and effective lithotripter for treating difficult-to-get calculus in biliary tract, which utilizes the principle of high-voltage oscillating wave generated by piezoelectricity, specifically, electrifies positive and negative electrode electrodes in liquid environment to induce high voltage between the electrodes, when the voltage difference between the two electrodes exceeds the resistance of an insulating layer, sparks and shock waves are generated between the electrodes, and the shock waves vibrate in water to generate tiny bubbles in a short time, so as to achieve the lithotripter purpose.

Most of the existing electrode wires are of positive-negative electrode coaxial structures or positive-negative electrode parallel structures, and the rigidity strength of the electrodes of the two structures is weak. However, the working length of the electrode is generally about 2 meters when the electrode is used, the electrode is often bent when passing through an endoscope channel, the electrode is broken and damaged when being seriously used for a long time, the use of the electrode is seriously affected, and the operation time of a user is prolonged.

Disclosure of Invention

In order to solve the problems of the prior art, the utility model provides a multi-strand electrode for lithotripsy, which is realized by the following technical scheme.

The multi-strand electrode for broken stone comprises a plug and an electrode wire which are connected with each other, wherein the electrode wire comprises a negative electrode wire, a positive electrode wire and a first insulating layer, and the first insulating layer is coated outside the negative electrode wire and the positive electrode wire; the surface of the negative electrode wire is provided with a negative electrode insulating layer, and the surface of the positive electrode wire is provided with a positive electrode insulating layer; the negative electrode wire or the positive electrode wire is provided with at least 1 strand, and the negative electrode wire and the positive electrode wire are mutually spirally wound into a whole; and a plurality of filling pieces are additionally arranged, the filling pieces are filled between the negative electrode wire, the positive electrode wire and the first insulating layer, and the filling pieces are uniformly arranged along the length direction of the electrode wire.

The multi-strand electrode for lithotripsy provided by the utility model utilizes the electrified positive electrode and the electrified negative electrode to discharge in the in-vivo conductive liquid environment to form shock waves, so as to achieve the purpose of lithotripsy. The negative electrode wire and the positive electrode wire are generally arranged in 1 strand. In order to achieve different stone breaking effects, the negative electrode wire or the positive electrode wire can be multi-stranded, and shock waves with different forms and angles can be formed by selecting the electrified negative electrode wire or positive electrode wire. In order to enhance the strength of the electrode wire and effectively avoid breakage and damage caused by repeated excessive bending, the utility model spirally winds the negative electrode wire and the positive electrode wire together; meanwhile, a plurality of filling pieces are arranged between the first insulating layer and the electrode wire, so that the electrode wire inside can be supported on one hand, the spiral winding form of the positive and negative electrode wires can be maintained on the other hand, and the possibility that the positive and negative electrode wires are unwound and spiral after long-term use is reduced.

Preferably, the multi-strand electrode further comprises a fixing head, wherein the fixing head clamps and fixes the tail ends of the negative electrode wire and the positive electrode wire at the middle part, and the tail ends of the negative electrode wire and the positive electrode wire are separated by a fixed distance. The fixing head has the functions of protecting the tail ends of the negative electrode wire and the positive electrode wire (namely the discharge ends for crushing stone) and keeping the tail ends of the negative electrode wire and the positive electrode wire at a fixed distance so as to keep the crushing stone effect stable.

More preferably, the end of the fixing head is provided with an open reflecting concave surface, and the tail ends of the negative electrode wire and the positive electrode wire are positioned in the middle of the reflecting concave surface. The purpose of setting up the reflection concave surface at the tip of fixed head is the direction of adjustment shock wave, promptly after the circular telegram negative pole electric wire, the reflection of anodal electric wire discharge production shock wave through the reflection concave surface, can make all shock waves all convey towards the direction of a certain specific range to reach the effect of directional rubble.

Preferably, a protection tube is further arranged at the connection part of the electrode wire and the plug, and the protection tube is sleeved outside the electrode wire. The protection tube is used for preventing the connection part of the plug and the electrode wire from being damaged due to repeated bending.

Preferably, the outer diameters of the positive and negative electrode wires are not more than 0.6mm.

Preferably, the positive electrode insulating layer and the negative electrode insulating layer are structures composed of polyimide and/or polytetrafluoroethylene, and the thicknesses of the positive electrode insulating layer and the negative electrode insulating layer are not more than 0.05mm.

Preferably, the outer diameter of the electrode wire does not exceed 1.5mm.

Compared with the prior art, the utility model has the beneficial effects that: the utility model optimizes the existing positive and negative electrode juxtaposition structure into a spiral winding 'twist' pattern, and sets the filling piece between the first insulating layer and the electrode wire, thereby improving the overall strength and bending resistance of the electrode wire, improving the overall rigidity of the electrode under the condition of basically not increasing the overall outer diameter of the electrode, and improving the experience of users. By arranging the fixing head with the reflecting concave surface, the stone breaking effect is also improved.

Drawings

FIG. 1 is a schematic view of a multi-strand electrode for lithotripsy provided in example 1;

FIG. 2 is a cross-sectional view of an electrode wire for a lithotripsy multi-strand electrode provided in example 1;

FIG. 3 is a schematic view of the spiral winding of the negative and positive wires of the multi-strand electrode for lithotripsy provided in example 1;

FIG. 4 is a schematic view showing a partial structure of an electrode wire, a plug and a protective tube of a multi-strand electrode for lithotripsy provided in example 1;

FIG. 5 is a schematic view showing the partial structure of the end of the negative electrode wire and the positive electrode wire of the multi-strand electrode for lithotripsy provided in example 2;

fig. 6 is a schematic view showing the partial structure of the ends of the negative electrode wire and the positive electrode wire in the preferred embodiment of example 2;

in the figure: 1. a plug; 2. an electrode wire; 3. a negative electrode wire; 4. a positive electrode wire; 5. a first insulating layer; 6. a negative electrode insulating layer; 7. an anode insulating layer; 8. a filler; 9. a protective tube; 10. a fixed head; 11. a reflective concave surface.

Detailed Description

The following description of the embodiments of the present patent will be made clearly and completely with reference to the accompanying drawings, and it is apparent that the described embodiments are only some embodiments of the present patent, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the one of ordinary skill in the art based on the embodiments of this patent, are within the scope of protection of this patent.

In the description of this patent, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "top", etc., are based on directions or positional relationships shown in the drawings, are merely for convenience of description of this patent and for simplification of description, and do not indicate or imply that the apparatus or element to be referred to must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the patent. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of this patent, it should be noted that, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. It is noted that all of the figures are exemplary representations. The specific meaning of the terms in this patent will be understood by those of ordinary skill in the art in a specific context.

The present patent is described in further detail below by way of specific examples of embodiments and with reference to the accompanying drawings.

Example 1

As shown in fig. 1 and 2, the multi-strand electrode for broken stone provided in this embodiment includes a plug 1 and an electrode wire 2 that are connected to each other, the electrode wire 2 includes a negative electrode wire 3, a positive electrode wire 4, and a first insulating layer 5, and the first insulating layer 5 is coated on the outer parts of the negative electrode wire 3 and the positive electrode wire 4; a negative electrode insulating layer 6 is arranged on the surface of the negative electrode wire 3, and a positive electrode insulating layer 7 is arranged on the surface of the positive electrode wire 4; the negative electrode wire 3 is provided with 3 strands, the positive electrode wire 4 is provided with 1 strand, and the negative electrode wire 3 and the positive electrode wire 4 are mutually spirally wound into a whole; and a plurality of filling pieces 8 are additionally arranged, the filling pieces 8 are filled among the negative electrode wire 3, the positive electrode wire 4 and the first insulating layer 5, and the filling pieces 8 are uniformly arranged along the length direction of the electrode wire 2.

The multi-strand electrode provided in this embodiment takes 3 strands of negative wires as an example, and the 3 strands of negative wires and the positive wire are spirally wound, and by connecting the positive wire and selecting 1, 2 or 3 strands of negative wires to be electrified, shock waves in different forms and directions can be formed between the positive wire and the electrified negative wire, so that the direction of broken stone can be adjusted.

As shown in fig. 2 and 3, the present embodiment further spirally winds the negative electrode wire and the positive electrode wire together, and a plurality of filler members are provided between the first insulating layer and the electrode wire. Therefore, the filling piece supports the electrode wire inside, the spiral winding form of the positive and negative wires can be maintained, the spiral unwinding is avoided, the bending strength of the electrode wire is finally improved, and the electrode wire is prevented from being damaged due to repeated excessive bending.

As shown in fig. 4, in a preferred embodiment of the present utility model, a protection tube 9 is further provided around the connection portion between the electrode wire 2 and the plug 1, so that the connection portion between the plug 1 and the electrode wire 2 can be prevented from being damaged by repeated bending.

As a preferable aspect of the present embodiment, the outer diameters of the positive electrode wire 4 and the negative electrode wire 3 are not more than 0.6mm; the positive electrode insulating layer 7 and the negative electrode insulating layer 6 are of structures composed of polyimide and/or polytetrafluoroethylene, and the thicknesses of the positive electrode insulating layer 7 and the negative electrode insulating layer 6 are not more than 0.05mm; the outer diameter of the electrode wire 2 does not exceed 1.5mm.

Example 2

As shown in fig. 5, the multi-strand electrode for lithotripsy provided in this embodiment further includes a fixing head 10, where the fixing head 10 clamps and fixes the ends of the negative electrode wire 3 and the positive electrode wire 4 in the middle, and the ends of the negative electrode wire 3 and the positive electrode wire 4 are separated by a fixed distance. The fixing head 10 can protect the tail ends of the negative electrode wire 3 and the positive electrode wire 4 (namely discharge ends for broken stone) and can maintain the distance between the tail ends of the negative electrode wire 3 and the positive electrode wire 4 so as to ensure the broken stone effect.

As a preferable mode of this embodiment, as shown in fig. 6, an open reflective concave surface 11 is provided at an end of the fixing head 10, and the ends of the negative electrode wire 3 and the positive electrode wire 4 are located in a middle portion of the reflective concave surface 11. The reflecting concave surface can change the direction of shock waves generated around during discharging, the shock waves are reflected by the reflecting concave surface, and finally all the shock waves are transmitted towards the preset direction, so that the purpose of accurately orienting crushed stones is achieved.

The above examples describe the practice of the utility model in detail, however, the utility model is not limited to the specific details of the above embodiments. Many simple modifications and variations of the technical solution of the present utility model are possible within the scope of the claims and technical idea of the present utility model, which simple modifications are all within the scope of the present utility model.

Claims (7)

1. The multi-strand electrode for broken stone is characterized by comprising a plug and an electrode wire which are connected with each other, wherein the electrode wire comprises a negative electrode wire, a positive electrode wire and a first insulating layer, and the first insulating layer is coated on the outer parts of the negative electrode wire and the positive electrode wire; the surface of the negative electrode wire is provided with a negative electrode insulating layer, and the surface of the positive electrode wire is provided with a positive electrode insulating layer; the negative electrode wire or the positive electrode wire is provided with at least 1 strand, and the negative electrode wire and the positive electrode wire are mutually spirally wound into a whole; and a plurality of filling pieces are additionally arranged, the filling pieces are filled between the negative electrode wire, the positive electrode wire and the first insulating layer, and the filling pieces are uniformly arranged along the length direction of the electrode wire.

2. The multi-strand electrode for lithotripsy according to claim 1, further comprising a fixing head clamping and fixing ends of the negative and positive wires in a central portion, the ends of the negative and positive wires being spaced apart by a fixed distance.

3. The multi-strand electrode for lithotripsy according to claim 2, wherein the end of the fixed head is provided with an open reflective concave surface, and the ends of the negative and positive wires are located in the middle of the reflective concave surface.

4. The multi-strand electrode for lithotripsy according to claim 1, wherein a protective tube is further provided at a connection portion of the electrode wire and the plug, the protective tube being sleeved outside the electrode wire.

5. The multi-strand electrode for lithotripsy according to claim 1, wherein the outer diameters of the positive and negative wires are not more than 0.6mm.

6. The stranded electrode for crushed stone of claim 1, wherein the thickness of said positive electrode insulating layer, negative electrode insulating layer is not more than 0.05mm.

7. The multi-strand electrode for lithotripsy of claim 1, wherein an outer diameter of the electrode wire is no more than 1.5mm.