Direction-adjustable lithotripsy electrode based on liquid electricity

Abstract

The utility model discloses a direction-adjustable lithotripsy electrode based on liquid electricity, and belongs to the technical field of medical instruments. A direction-adjustable lithotripsy electrode based on liquid electricity comprises a sheathing canal, an electrode wire and a steel wire rope are arranged on the sheathing canal, a metal woven mesh is installed at one end of the sheathing canal, and the metal woven mesh wraps the electrode wire and the end of one end of the steel wire rope; a handle is arranged on the sheath tube, a cavity is formed in the inner side of the handle, a connecting seat is arranged on the inner side of the cavity, and the connecting seat is connected with the steel wire rope; according to the direction-adjustable lithotripsy electrode based on liquid electricity, the sliding seat, the connecting seat and the locking piece are designed, so that the metal woven mesh drives the electrode wire to conduct angle adjustment within a certain range, the problem that the working angle of a traditional liquid electricity lithotripsy electrode is limited is solved through the design, and the electrode can more flexibly adapt to the positions of calculi at different angles; therefore, the device can quickly reach the position of the calculus for crushing, shortens the operation time, and improves the operation efficiency.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical equipment, and in particular relates to a liquid-electricity-based adjustable lithotripsy electrode. Background Art

[0002] Electrohydraulic lithotripsy, also known as plasma shock wave lithotripsy, is based on the principle of applying extremely high voltage between electrodes to cause the electrodes to discharge and ionize, thereby generating plasma. Plasma is an ionized gaseous substance composed of atoms that have been deprived of some electrons and the positive and negative electrons generated after the atoms are ionized. These ions will explode and produce electron bubbles, thereby forming shock waves. In addition, since this process is an exothermic process, a large amount of heat will be released, causing the local water temperature to rise sharply, resulting in a cavitation effect, and further forming a shock wave. This shock wave has powerful energy, enough to break up stones in the body.

[0003] During use, the existing electrohydraulic lithotripsy has a limited working angle because its electrode tip cannot be adjusted. It cannot reach some areas with stones at tricky angles. As a result, its electrode tip cannot quickly reach the location of the stones and crush stones at tricky angles. The doctor needs to spend more time adjusting the angle and position, which prolongs the operation time and reduces the flexibility of the electrode tip during use. Summary of the Invention

[0004] The purpose of the utility model is to provide a liquid-electricity-based adjustable lithotripsy electrode in response to the problems existing in the prior art.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions: a liquid-electric adjustable lithotripsy electrode, comprising a sheath tube, an electrode wire and a steel wire rope are provided on the sheath tube, a metal braided mesh is installed at one end of the sheath tube, and the metal braided mesh wraps the end of the electrode wire and one end of the steel wire rope; the sheath tube is provided with a handle, a cavity is opened on the inner side of the handle, a connecting seat is provided on the inner side of the cavity, the connecting seat is connected to the steel wire rope, a sliding seat located on the outside of the handle is installed on the connecting seat, and a locking member is provided between the sliding seat and the connecting seat.

[0006] By adopting the above technical solution and rationally designing components such as the sheath, electrode wire, steel wire rope, metal braided mesh, handle and locking mechanism, efficient, safe and adjustable operation of the lithotripsy electrode is achieved. The synergistic effect of various components ensures the successful performance of the operation, reduces surgical risks and improves the patient's treatment effect.

[0007] Optionally, the sheath tube is provided with two routing channels and one adjustment channel, and the diameters of the two routing channels are larger than the diameter of the adjustment channel.

[0008] By adopting the above technical solution, the routing channel and the adjustment channel are set up to provide independent channels for the positive line, negative line and wire rope, ensuring that the current transmission and adjustment functions do not interfere with each other.

[0009] Optionally, an outer wall of the sheath tube and inner walls of the two wiring channels are respectively provided with an insulating layer.

[0010] By adopting the above technical solution, the current can be effectively isolated, current leakage can be prevented, and patient safety can be protected.

[0011] Optionally, the electrode wire includes a positive wire and a negative wire, the positive wire and the negative wire are respectively located on the inner sides of the two wiring channels, and one end of the electrode wire away from the metal braided mesh is connected to a plug.

[0012] By adopting the above technical solution and setting the plug, the stability of current transmission is ensured and efficient stone crushing is achieved.

[0013] Optionally, the metal braided mesh is in a sleeve shape, and a protective layer is provided on the outside of the metal braided mesh.

[0014] By adopting the above technical solution and setting up the protective layer, the durability and safety of the electrode are enhanced, damage to human tissue is prevented, and at the same time, good compatibility and flexibility are achieved, facilitating surgical operations.

[0015] Optionally, two connecting channels are provided on the handle, and one of the connecting channels is of a through-type.

[0016] By adopting the above technical solution, the setting of the connection channel provides a channel for the electrode wire and the wire rope to enter and exit the handle, which is convenient for connection and fixation.

[0017] Optionally, the locking member includes a locking seat installed on the upper end of the sliding seat, and the locking seat is fixedly connected to an end close to the sliding seat with a connecting rod that passes through the sliding seat and extends to the inside of the cavity, and a threaded groove for connection of the connecting rod is provided on the outside of the connecting seat.

[0018] By adopting the above technical solution, the sliding seat is locked in a desired position by the locking member, ensuring that the electrode tip can remain stable after adjustment.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. The adjustable lithotripsy electrode based on hydraulic electricity is designed with a sliding seat, a connecting seat and a locking piece, so that the metal braided mesh drives the electrode wire to adjust the angle within a certain range. This design solves the problem of limited working angle of traditional hydraulic electric lithotripsy electrodes, allowing the electrode to more flexibly adapt to the location of stones at different angles, thereby quickly reaching the location of the stones for crushing, shortening the operation time and improving the operation efficiency; 2. The two routing channels and one adjustment channel opened on the sheath, as well as the setting of the insulation layer, ensure the safety and stability of the electrode wire and wire rope during the transmission process; at the same time, the positive wire and the negative wire are respectively located in the two routing channels, avoiding the risk of current short circuit and improving the safety of the equipment; 3. The metal braided mesh is the main working part of the electrode. Its sleeve-shaped design and the polyvinyl chloride protective layer on the outside not only enhance the durability and corrosion resistance of the electrode, but also improve the comfort of the patient. At the same time, the elasticity of the metal braided mesh can be used to drive the end of the electrode wire to bend and reposition, reducing discomfort during the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the main structure of the lithotripsy electrode of the present invention;

[0022] Figure 2 This is a schematic diagram of the cross-sectional structure of the metal braided mesh of the present invention;

[0023] Figure 3 This is a schematic diagram of the three-dimensional structure of the sheath tube of the utility model;

[0024] Figure 4 This is a schematic diagram of the cross-sectional structure of the handle of the utility model;

[0025] Figure 5 This is a schematic diagram of the three-dimensional structure of the connecting seat of the utility model.

[0026] In the figure: 1. Sheath; 101. Wiring channel; 102. Adjustment channel; 103. Insulation layer; 2. Electrode wire; 201. Plug; 3. Steel wire rope; 4. Metal braided mesh; 401. Protective layer; 5. Handle; 501. Connecting channel; 6. Cavity; 601. Slide; 7. Connecting seat; 8. Sliding seat; 9. Locking piece; 91. Locking seat; 92. Connecting rod; 93. Threaded groove. DETAILED DESCRIPTION

[0027] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] In the description of the present invention, it should be noted that the terms "middle", "upper", "lower", "left", "right", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0029] like Figure 1 —5, the specific scheme of the embodiment is as follows: a liquid-electric adjustable lithotripsy electrode, comprising a sheath tube 1, wherein the sheath tube 1 is provided with two wiring channels 101 and an adjustment channel 102, wherein the diameter of the two wiring channels 101 is larger than the diameter of the adjustment channel 102, and the outer wall of the sheath tube 1 and the inner wall of the two wiring channels 101 are respectively provided with an insulating layer 103, wherein the wiring channel 101 provides an independent channel for the positive line and the negative line to prevent current interference and short circuit, and the insulating layer 103 effectively isolates the current to prevent current leakage, thereby protecting the patient's safety and transmitting high-voltage electric pulses. The positive line and the negative line generate high-temperature and high-pressure plasma through the liquid-electric effect to achieve the purpose of lithotripsy, and the adjustment channel 102 provides a channel for the steel wire 3, allowing it to move in the sheath tube 1 to adjust the direction of the electrode tip;

[0030] The sheath tube 1 is provided with an electrode wire 2 and a steel wire rope 3. The electrode wire 2 includes a positive wire and a negative wire. The positive wire and the negative wire are respectively located on the inner sides of the two routing channels 101. The steel wire rope 3 is located on the inner side of the adjustment channel 102. The steel wire rope 3 is made of a high-strength, wear-resistant alloy material.

[0031] A metal braided mesh 4 is installed at one end of the sheath 1. The metal braided mesh 4 is sleeve-shaped and has the characteristics of elasticity, recovery, waterproofness and corrosion resistance. The setting of the metal braided mesh 4 can drive the electrode wire 2 to bend and restore. A protective layer 401 is provided on the outside of the metal braided mesh 4. The setting of the protective layer 401 can prevent the metal braided mesh 4 from causing damage to human tissue. The protective layer 401 is polyvinyl chloride, which has good compatibility and flexibility. The end of the electrode wire 2 away from the metal braided mesh 4 is connected to a plug 201. The plug 201 connects the electrode wire 2 to an external power supply or control device. The positive wire and the negative wire are intertwined at one end inside the metal braided mesh 4. The metal braided mesh 4 wraps the end of the electrode wire 2 and one end of the steel wire rope 3. The steel wire rope 3 and the metal braided mesh 4 can be welded or bonded, and the electrode wire 2 is bonded to the metal braided mesh 4.

[0032] The sheath 1 is provided with a handle 5, which can be held by a doctor or operator to facilitate the control of the movement and adjustment of the electrode. Two connecting channels 501 are provided on the handle 5, one of which is a through-type connecting channel 501. The electrode wire 2 is located on the inner side of the through-type connecting channel 501. The connecting channel 501 provides a channel for the electrode wire 2 and the wire rope 3 to enter and exit the handle 5.

[0033] A cavity 6 is provided on the inner side of the handle 5, which provides an installation space for the adjustable mechanism to ensure the stable operation of the mechanism. The cavity 6 is communicated with the other connecting channel 501, and the steel wire rope 3 is located on the inner side of the other connecting channel 501. A connecting seat 7 is provided on the inner side of the cavity 6, and the connecting seat 7 can realize the fixation and adjustment of the steel wire rope 3. The connecting seat 7 is fixedly connected to the steel wire rope 3. The steel wire rope 3 can be fixedly connected to the connecting seat 7 by welding gaskets and screws. At the same time, the steel wire rope 3 can also be directly welded to the side wall of the connecting seat 7. A sliding seat 8 located on the outer side of the handle 5 is installed on the connecting seat 7;

[0034] A locking member 9 is provided between the sliding seat 8 and the connecting seat 7, and the locking member 9 includes a locking seat 91 installed on the upper end of the sliding seat 8. The locking seat 91 is fixedly connected to an end of the sliding seat 8 close to the sliding seat 8 with a connecting rod 92 that passes through the sliding seat 8 and extends to the inside of the cavity 6. The side wall of the cavity 6 is provided with a slideway 601 for the connecting rod 92 to slide, and the outer side of the connecting seat 7 is provided with a threaded groove 93 for the connection of the connecting rod 92. Through the cooperation of the connecting rod 92 and the threaded groove 93, the sliding seat 8 is locked in the desired position to ensure that the electrode tip can remain stable after adjustment to prevent accidental movement.

[0035] When it is necessary to adjust the angle of the tip of the electrode wire 2, the connecting seat 7 is driven by the sliding seat 8 to move toward one end of the plug 201. The movement of the connecting seat 7 pulls the steel wire rope 3. Under the tension of the steel wire rope 3, the metal braided mesh 4 drives the tip of the electrode wire 2 to adjust the angle of bending; when it is necessary to reset the tip of the electrode wire 2 that is bent at an angle, the connecting seat 7 is driven by the sliding seat 8 to move toward the tip of the electrode wire 2, so that the steel wire rope 3 is relaxed, and the metal braided mesh 4 that has lost tension is restored by its own characteristics.

[0036] The operating steps of the above-mentioned electrohydraulic adjustable lithotripsy electrode are as follows:

[0037] Connect the plug 201 of the lithotripsy electrode to an external power source or control device to ensure a stable power supply;

[0038] The lithotripsy electrode is introduced into the patient's body through a special channel until the front end of the metal braided mesh 4 approaches the stone position;

[0039] By utilizing the mobility of the steel wire 3 in the adjustment channel 102, the steel wire 3 drives the tip of the sheath tube 1 to adjust its direction by operating the sliding seat 8 on the handle 5. During adjustment, the sliding seat 8 moves along the slideway 601 under the action of the locking member 9, and cooperates with the threaded groove 93 on the connecting seat 7 through the connecting rod 92 to achieve precise locking.

[0040] Repeatedly adjust until the tip of the metal braided mesh 4 is aligned with the stone position;

[0041] Turn on the external power supply or control device to pass the high-voltage electric pulse through the electrode wire 2, and use the hydroelectric effect to generate high-temperature and high-pressure plasma in the liquid around the tip of the electrode wire 2, forming a strong shock wave or cavitation effect, breaking it into small pieces or powder;

[0042] After confirming that the operation was successful and without complications, the lithotripsy electrode was removed from the patient's body.

[0043] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A liquid-electric adjustable lithotripsy electrode, characterized by: The invention comprises a sheath tube (1), wherein an electrode wire (2) and a steel wire rope (3) are provided on the sheath tube (1), and a metal braided mesh (4) is installed at one end of the sheath tube (1), and the metal braided mesh (4) wraps the end of the electrode wire (2) and one end of the steel wire rope (3); the sheath tube (1) is provided with a handle (5), a cavity (6) is provided on the inner side of the handle (5), a connecting seat (7) is provided on the inner side of the cavity (6), the connecting seat (7) is connected to the steel wire rope (3), a sliding seat (8) located outside the handle (5) is installed on the connecting seat (7), and a locking member (9) is provided between the sliding seat (8) and the connecting seat (7).

2. The electrohydraulic adjustable lithotripsy electrode according to claim 1, characterized in that: The sheath tube (1) is provided with two routing channels (101) and one adjustment channel (102), and the diameters of the two routing channels (101) are larger than the diameter of the adjustment channel (102).

3. The electrohydraulic adjustable lithotripsy electrode according to claim 2, characterized in that: The outer side wall of the sheath tube (1) and the inner side walls of the two wiring channels (101) are respectively provided with an insulating layer (103).

4. The electrohydraulic adjustable lithotripsy electrode according to claim 2, characterized in that: The electrode wire (2) comprises a positive wire and a negative wire, the positive wire and the negative wire are respectively located inside the two wiring channels (101), and one end of the electrode wire (2) away from the metal braided mesh (4) is connected to a plug (201).

5. The electrohydraulic adjustable lithotripsy electrode according to claim 1, characterized in that: The metal braided mesh (4) is sleeve-shaped, and a protective layer (401) is provided on the outside of the metal braided mesh (4).

6. The electrohydraulic adjustable lithotripsy electrode according to claim 1, characterized in that: Two connecting channels (501) are provided on the handle (5), one of the connecting channels (501) being of a through-type.

7. The electrohydraulic adjustable lithotripsy electrode according to claim 1, characterized in that: The locking member (9) comprises a locking seat (91) mounted on the upper end of the sliding seat (8), and one end of the locking seat (91) close to the sliding seat (8) is fixedly connected to a connecting rod (92) that passes through the sliding seat (8) and extends to the inner side of the cavity (6), and a threaded groove (93) for connecting the connecting rod (92) is provided on the outer side of the connecting seat (7).

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