Secondary limiting plug for ablation electrode

Abstract

The utility model relates to the technical field of medical instruments, in particular to a time-limiting plug for an ablation electrode, which comprises a plug shell, two groups of fixed electrode pins, two groups of movable electrode pins, an electrode holder, a self-destruction device and a limiting device, the top end of the plug shell is fixedly provided with the two groups of fixed electrode pins and the two groups of movable electrode pins which are movably arranged; a cavity is formed in the inner bottom wall of the plug shell, the electrode holder is fixedly mounted in the cavity, a mounting groove is formed in the top end of the outer side of the plug, a conical tip in a slot can make contact with a glue box, and when a limiting column completely enters a limiting groove, the conical tip can rapidly pierce the glue box under the action of a spring, glue in the glue box can rapidly flow out, and the glue box is prevented from being damaged. The glue causes irreversible damage to other key parts, it is ensured that the plug cannot be used again, the design of the self-destruction device is simple and effective, it can be ensured that the plug cannot be activated again after being used once, and therefore the use safety of the medical instrument is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a time-limited plug for an ablation electrode. Background Art

[0002] As we all know, there are cases where disposable electrosurgical instruments are recycled and reused by bad people after surgical operations. Since the reuse of disposable medical instruments will cause cross infection, the State Food and Drug Administration has always recommended the use of disposable self-destruct devices to prevent the recycling of disposable medical instruments. Medical electrical plugs are components of disposable electrosurgical instruments and are necessary for connecting to the main unit of the electrosurgical unit. Using disposable self-destruct plugs will prevent the reuse of disposable electrosurgical instruments.

[0003] The existing Chinese patent application number is CN202022053245.4, which proposes a time-limited plug for an ablation electrode, belonging to the field of medical devices, including a shell and a base slidably arranged with the shell, the base is fixedly connected with a sliding electrode pin and two fixed electrode pins, the fixed electrode pin is connected to the internal wire of the shell, and the shell is provided with an electrode seat connected to the sliding electrode pin; a limiting hole is provided on the side wall of the base, and a limiting groove is provided on the shell, and a limiting block is elastically provided in the limiting groove of the shell, and the limiting block is inserted in the limiting hole.

[0004] The inventor believes that the sliding electrode pin only relies on the spherical block to slide in the positioning groove. When the spherical block moves to the position of the limiting hole, under the action of the elastic force of the spring, the limiting block is driven and inserted into the limiting hole to achieve the limiting effect on the seat. If the limiting block is damaged, the sliding electrode pin can still be connected to the electrode seat, and there is still a risk of reusing the medical device. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies of the prior art, the utility model provides a time-limited plug for an ablation electrode.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a time-limited plug for an ablation electrode, comprising a plug shell, a fixed electrode pin, a movable electrode pin, an electrode seat, a self-destruction device and a limiting device, wherein two groups of the fixed electrode pins and the movable electrode pins are fixedly installed on the top of the plug shell, a cavity is provided in the inner bottom wall of the plug shell, the electrode seat is fixedly installed in the cavity, a mounting groove is provided at the top of the plug shell, the movable electrode pin is slidably connected to the mounting groove, and the bottom end of the movable electrode pin passes through the cavity and the The electrode seat is in contact, the self-destruct device includes a slide groove, a spring, a limit column, a conical tip, a limit groove, a slot and a glue box, the plug shell is provided with the slide groove that passes through the installation groove, the spring is installed in the slide groove, the limit column is installed at one end of the spring away from the slide groove, the installation groove is provided with a limit groove at one end away from the slide groove, the limit groove is adapted to the limit column, the glue box is installed in the limit groove, the limit column is provided with the slot at one end away from the spring, the slot is adapted to the glue box, and the conical tip is installed in the slot.

[0009] In order to facilitate the limiting of the movable electrode pin and ensure the stability of the movable motor pin during normal use, the utility model is improved in that the limiting device includes a groove, a limiting ball and a circular groove, the side wall of the plug shell is provided with the groove, the circular groove passing through the mounting groove is provided in the groove, the side wall of the movable electrode pin is elastically mounted with the limiting ball, and the limiting ball is slidably connected to the circular groove.

[0010] In order to prevent the limiting column from deviating from the motion trajectory, the utility model is improved in that guide grooves are provided at both upper and lower ends of the slide groove, and guide blocks are installed at both upper and lower ends of the limiting column, and the guide blocks are slidably connected to the guide grooves.

[0011] In order to facilitate the conical tip to quickly pierce the glue box, the utility model is improved in that a sealing film is installed at one end of the glue box close to the movable electrode pin.

[0012] Preferably, the utility model is improved in that one end of the limiting column close to the movable electrode pin is designed with rounded corners.

[0013] Preferably, the utility model is improved in that an insulating sleeve is installed on the outer wall of the limiting column.

[0014] Preferably, the utility model is improved in that the length of the slide groove is greater than the guide groove.

[0015] Preferably, the utility model is improved in that the guide groove is connected with the installation groove.

[0016] (III) Beneficial effects

[0017] Compared with the prior art, the utility model provides a time-limited plug for ablation electrodes, which has the following beneficial effects:

[0018] The limited-time plug for the ablation electrode ensures that the plug can only be used once by setting a self-destruct device, effectively avoiding the potential risks brought by repeated use. Even if the limit column is damaged, the contact between the movable electrode pin and the electrode holder is blocked due to the effect of the glue, causing the plug to no longer work normally. At the same time, the glue causes irreversible damage to other key components, ensuring that the plug cannot be used again. The design of this self-destruct device is not only simple and effective, but also can ensure that the plug cannot be activated again after being used once, thereby greatly improving the safety of the use of medical devices.

[0019] The limited-time plug for the ablation electrode can prevent the movable electrode pin from excessively moving or shaking and ensure that the movable electrode pin can smoothly move into place when needed, thereby improving the stability of the overall structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a schematic diagram of a half-cut three-dimensional structure of the plug housing of the utility model;

[0022] Figure 3 For the utility model Figure 2 A schematic diagram of the structure at the local A of the enlarged part;

[0023] Figure 4 It is a schematic diagram of the three-dimensional structure of the limiting column of the utility model.

[0024] In the figure: 1. plug housing; 2. fixed electrode pin; 3. movable electrode pin; 4. electrode seat; 5. cavity; 6. mounting groove; 7. slide groove; 8. spring; 9. limit column; 10. conical tip; 11. limit groove; 12. slot; 13. glue box; 14. groove; 15. limit ball; 16. circular groove; 17. guide groove; 18. guide block; 19. sealing film. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-4 A time-limited plug for an ablation electrode, comprising a plug shell 1, a fixed electrode pin 2, a movable electrode pin 3, an electrode seat 4, a self-destruction device and a limiting device, wherein two groups of the fixed electrode pins 2 and the movable electrode pins 3 are fixedly installed at the top of the plug shell 1, a cavity 5 is provided on the inner bottom wall of the plug shell 1, the electrode seat 4 is fixedly installed in the cavity 5, a mounting groove 6 is provided on the top of the plug shell 1, the movable electrode pin 3 is slidably connected to the mounting groove 6, the bottom end of the movable electrode pin 3 passes through the cavity 5 and contacts the electrode seat 4, the self-destruction device comprises a slide groove 7, a spring 8, a limiting column 9, a conical tip 10 , a limiting groove 11, a slot 12 and a glue box 13, the plug housing 1 is provided with the slide groove 7 which passes through the installation groove 6, the spring 8 is installed in the slide groove 7, the end of the spring 8 away from the slide groove 7 is provided with the limiting column 9, the installation groove 6 is provided with a limiting groove 11 at one end away from the slide groove 7, the limiting groove 11 is adapted to the limiting column 9, the glue box 13 is installed in the limiting groove 11, the slot 12 is provided at one end of the limiting column 9 away from the spring 8, the slot 12 is adapted to the glue box 13, the conical tip 10 is installed in the slot 12, in this embodiment, when in use, in the initial state, the activity The movable electrode pin 3 is located in the mounting groove 6 and is flush with the fixed electrode pin 2. The limiting column 9 is held in the slide groove 7 by the movable electrode pin 3, and the conical tip 10 is located in the slot 12 and keeps a certain distance from the glue box 13. At this time, the movable electrode pin 3 is in normal contact with the electrode holder 4, and the plug is in a usable state. When the movable electrode pin 3 is inserted into the mounting groove 6 and the needle is pulled out, the spring 8 drives the limiting column 9 to move along the slide groove 7 until the end of the limiting column 9 enters the limiting groove 11 of the mounting groove 6. As the limiting column 9 moves, the conical tip 10 in the slot 12 contacts the glue box 13. When the limiting column 9 completely enters the limiting groove 11, the conical tip 10 is under the action of the spring 8. The glue box 13 is quickly punctured and the glue in the glue box 13 will quickly flow out to fix the limit column 9 and the limit groove 11. The glue will flow into other key components, such as the movable electrode pin 3 and the electrode holder 4, through the gap, causing the electrical connection to be fixed or blocked, thereby making the plug lose its function. Due to the action of the glue, the contact between the movable electrode pin 3 and the electrode holder 4 is blocked, causing the plug to no longer work normally. At the same time, the glue causes irreversible damage to other key components, ensuring that the plug cannot be used again. The design of this self-destruction device is not only simple and effective, but also can ensure that the plug cannot be activated again after being used once, thereby greatly improving the safety of the use of medical devices.

[0027] In actual use, it is further convenient to limit the movable electrode pin 3 to ensure the stability of the movable motor pin during normal use. In this embodiment, the limiting device includes a groove 14, a limiting ball 15 and a circular groove 16. The side wall of the plug housing 1 is provided with the groove 14, and the circular groove 16 that passes through the mounting groove 6 is provided in the groove 14. The side wall of the movable electrode pin 3 is elastically installed with the limiting ball 15, and the limiting ball 15 is slidably connected with the circular groove 16. The limiting ball 15 in the groove 14 is pressed. Due to the elastic setting of the limiting ball 15, the limiting ball 15 will enter the mounting groove 6 through the circular groove 16 after being pressed, that is, the limiting of the movable electrode pin 3 is released. The sliding of the limiting ball 15 in the circular groove 16 can prevent the movable electrode pin 3 from excessive movement or shaking, and can also ensure that the movable electrode pin 3 can move smoothly into place when needed, thereby improving the stability of the overall structure.

[0028] In actual use, in order to further prevent the limit column 9 from deviating from the motion trajectory, in this embodiment, guide grooves 17 are provided at the upper and lower ends of the slide groove 7, and guide blocks 18 are installed at the upper and lower ends of the limit column 9. The guide blocks 18 are slidably connected to the guide grooves 17. During the movement, the limit column 9 drives the guide blocks 18 to move in the guide grooves 17, which guides the movement of the limit column 9 and prevents the limit column 9 from deviating from the motion trajectory.

[0029] During actual use, it is further convenient for the conical tip 10 to quickly puncture the glue box 13. In this embodiment, a sealing film 19 is installed at one end of the glue box 13 close to the movable electrode pin 3. The sealing film 19 can effectively prevent the glue from being contaminated or dried by the external environment before being used. The design of the sealing film 19 also enhances the safety of use. Before being punctured, the glue is completely sealed in the glue box 13. The presence of the sealing film 19 enables the glue box 13 to be quickly and accurately punctured by the conical tip 10 when being used, thereby quickly releasing the glue. Since the sealing film 19 is disposable, when the glue box 13 is used, the entire assembly can be discarded together without the need for additional cleaning steps.

[0030] Preferably, in the present embodiment, one end of the limiting column 9 close to the movable electrode pin 3 is rounded, which further facilitates the movable electrode pin 3 to slide more smoothly in the mounting groove 6 .

[0031] Preferably, in this embodiment, an insulating sleeve is installed on the outer wall of the limiting column 9, and the insulating sleeve can effectively prevent electromagnetic interference or other electrical signals in the external environment from interfering with the limiting column 9.

[0032] Preferably, in this embodiment, the length of the slide groove 7 is greater than that of the guide groove 17 , which further facilitates accommodating the spring 8 .

[0033] Preferably, in this embodiment, the guide groove 17 is connected with the installation groove 6. When the spring 8 drives the limiting column 9 to extend out, the connection between the guide groove 17 and the installation groove 6 makes it easy for the guide block 18 to leave the guide groove 17 under the support of the spring 8, thereby completing the self-destruction of the guide block 18.

[0034] In order to explain in detail the possible application scenarios, technical principles, specific schemes that can be implemented, and the purposes and effects that can be achieved, the following is a detailed description of the specific embodiments listed in conjunction with the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0035] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A time-limited plug for an ablation electrode, comprising a plug housing (1), a fixed electrode pin (2), a movable electrode pin (3), an electrode seat (4), a self-destruction device and a limit device, characterized in that: The top of the plug shell (1) is fixedly mounted with two groups of the fixed electrode pins (2) and the movable electrode pins (3) which are movably mounted; the inner bottom wall of the plug shell (1) is provided with a cavity (5); the electrode seat (4) is fixedly mounted in the cavity (5); the top of the plug shell (1) is provided with a mounting groove (6); the movable electrode pins (3) are slidably connected to the mounting groove (6); the bottom ends of the movable electrode pins (3) penetrate the cavity (5) and contact the electrode seat (4); the self-destruct device comprises a slide groove (7), a spring (8), a limiting column (9), a conical tip (10), a limiting groove (11), a slot (12) and a glue box (13); The plug housing (1) is provided with a slide groove (7) which passes through the installation groove (6), the spring (8) is installed in the slide groove (7), the limiting column (9) is installed at one end of the spring (8) away from the slide groove (7), the installation groove (6) is provided with a limiting groove (11) at one end away from the slide groove (7), the limiting groove (11) is matched with the limiting column (9), the glue box (13) is installed in the limiting groove (11), the limiting column (9) is provided with a slot (12) at one end away from the spring (8), the slot (12) is matched with the glue box (13), and the conical tip (10) is installed in the slot (12).

2. The time-limited plug for ablation electrode according to claim 1, characterized in that: The limiting device comprises a groove (14), a limiting ball (15) and a circular groove (16); the side wall of the plug housing (1) is provided with the groove (14); the circular groove (16) penetrating the mounting groove (6) is provided in the groove (14); the limiting ball (15) is elastically mounted on the side wall of the movable electrode pin (3); and the limiting ball (15) is slidably connected to the circular groove (16).

3. The time-limited plug for ablation electrode according to claim 2, characterized in that: The upper and lower ends of the slide groove (7) are both provided with guide grooves (17), and the upper and lower ends of the limit column (9) are both provided with guide blocks (18), and the guide blocks (18) are slidably connected to the guide grooves (17).

4. The time-limited plug for ablation electrode according to claim 3, characterized in that: A sealing film (19) is installed at one end of the glue box (13) close to the movable electrode pin (3).

5. The time-limited plug for ablation electrode according to claim 4, characterized in that: One end of the limiting column (9) close to the movable electrode pin (3) is designed with a rounded corner.

6. The time-limited plug for ablation electrode according to claim 5, characterized in that: An insulating sleeve is installed on the outer wall of the limiting column (9).

7. The time-limited plug for ablation electrode according to claim 6, characterized in that: The length of the sliding groove (7) is greater than that of the guiding groove (17).

8. The time-limited plug for ablation electrode according to claim 7, characterized in that: The guide groove (17) is connected to the mounting groove (6).

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