Implantable cardiac pacemaker electrode lead fixing structure

Abstract

The utility model discloses an implantable cardiac pacemaker electrode lead fixing structure, which belongs to the technical field of medical instruments and comprises a connecting shell fixedly assembled with a pulse generator and an electrode lead body used for conducting electric pulses. The center of the butt-joint plate abuts against the end of the electrode wire body, a fixing piece for clamping the top end of the electrode wire body is installed at the top of the butt-joint plate, and an elastic telescopic piece for assisting in fixing the electrode wire body is installed at the bottom of the baffle. The fixing piece comprises a plurality of sets of sliding grooves which are formed in the butt joint plate and circumferentially arranged around the central axis of the butt joint plate at equal intervals, and L-shaped clamping rods are installed in each set of sliding grooves in a sliding mode. The practical operation in the operation process is not facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to an implantable cardiac pacemaker electrode lead fixing structure. Background Art

[0002] A pacemaker is an electronic therapeutic device implanted in the body. It emits electrical pulses powered by a battery through a pulse generator. These pulses are conducted through the wire electrodes to stimulate the myocardium in contact with the electrodes, causing the heart to become excited and contracted, thereby achieving the purpose of treating heart dysfunction caused by certain arrhythmias. The electrode wire is a conductive metal wire wrapped in an insulating layer. Its function is to transmit the pacemaker's electrical pulses to the heart and transmit the heart's intracavitary electrocardiogram to the pacemaker's sensing circuit.

[0003] Existing electrode wires are usually directly connected to the pulse generator, and their installation and disassembly are relatively complicated, which is not conducive to the actual operation of the surgical process. Therefore, those skilled in the art provide an implantable pacemaker electrode wire fixing structure to solve the problems raised in the above background technology. Utility Model Content

[0004] The purpose of the present invention is to provide an implantable cardiac pacemaker electrode lead fixing structure to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an implantable cardiac pacemaker electrode wire fixing structure, comprising a connecting shell fixedly assembled with a pulse generator and an electrode wire body for conducting electrical pulses, wherein a docking plate and a baffle are arranged in parallel inside the connecting shell, the center of the docking plate abuts against the end of the electrode wire body, a fixing part for clamping the top of the electrode wire body is installed on the top of the docking plate, and an elastic retractable part for assisting in fixing the electrode wire body is installed on the bottom of the baffle.

[0006] Preferably: the fixing part includes a plurality of groups of sliding grooves opened inside the docking plate and arranged equidistantly around the axis thereof, an L-shaped clamping rod is slidably installed inside each group of the sliding grooves, a round rod sliding through the L-shaped clamping rod is installed inside the sliding groove, and the top end of the L-shaped clamping rod is connected to a fastener for controlling its movement.

[0007] Preferably, an annular groove corresponding to the L-shaped clamping rod is formed on the outer ring of the end of the electrode wire body.

[0008] Preferably, the fastener comprises a fastening screw rotatably connected to the top of the docking plate, a movable ring is threadedly connected to the fastening screw, and the outer ring of the movable ring is connected to the top end of each set of L-shaped clamping rods through a hinged movable rod.

[0009] Preferably, the fastener comprises a fastening screw rotatably connected to the top of the docking plate, a movable ring is threadedly connected to the fastening screw, and the outer ring of the movable ring is connected to the top end of each set of L-shaped clamping rods through a hinged movable rod.

[0010] Preferably, the elastic telescopic member comprises an extrusion plate connected to the bottom of the baffle via a spring, and an outer ring of the end of the electrode wire body is provided with an insulating sleeve abutting against the extrusion plate.

[0011] Preferably, a plurality of groups of limiting rods are installed between the bottom of the baffle and the inner wall of the connecting shell, and the plurality of groups of limiting rods are all located in the inner ring of the spring and are slidably connected to the extrusion plate.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. In the present invention, a fastening screw is provided to drive the movable ring, the movable rod and the L-shaped clamping rod to move, and the ends of multiple groups of L-shaped clamping rods are embedded in the annular groove, which can facilitate the positioning of the electrode wire body. The further provision of a round rod can improve the stability of the movement of the L-shaped clamping rod. The assembly and disassembly between the electrode wire body and the connecting shell is convenient, which is convenient for operation during the actual operation. A knob is provided inside the groove, which can facilitate medical staff to rotate the fastening screw and is conducive to the implantation of the implantable cardiac pacemaker into the human body.

[0014] 2. In the present invention, the insulating sleeve drives the extrusion plate to slide and the spring to compress when it moves. The spring can provide a certain elastic force for the fixed electrode wire body and the insulating sleeve, thereby increasing the friction force at the joint between the electrode wire body and the L-shaped clamp rod, improving the stability of the device fixation, and avoiding poor contact of the device. A limit rod is provided to assist the movement of the extrusion plate and also improve the overall strength of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0016] In the figure: 1. Connecting shell; 2. Electrode wire body; 3. Docking plate; 4. Baffle; 5. Slide groove; 6. L-shaped clamping rod; 7. Round rod; 8. Annular groove; 9. Fastening screw; 10. Movable ring; 11. Movable rod; 12. Knob; 13. Groove; 14. Cross slot; 15. Spring; 16. Extrusion plate; 17. Insulating sleeve; 18. Limit rod. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. 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.

[0018] See also Figure 1 In an embodiment of the utility model, an implantable cardiac pacemaker electrode wire fixing structure includes a connecting shell 1 fixedly assembled with a pulse generator and an electrode wire body 2 for conducting electrical pulses. A docking plate 3 and a baffle 4 are arranged in parallel inside the connecting shell 1. The center of the docking plate 3 abuts against the end of the electrode wire body 2. A fixing part for clamping the top of the electrode wire body 2 is installed on the top of the docking plate 3, and an elastic telescopic part for assisting in fixing the electrode wire body 2 is installed on the bottom of the baffle 4.

[0019] When assembling the components, the end of the electrode wire body 2 is inserted into the interior of the connecting shell 1. When the electrode wire body 2 moves inside the connecting shell 1, it also drives the elastic telescopic part to move. After the end of the electrode wire body 2 abuts against the docking plate 3, the medical staff rotates the fixing part to fix the electrode wire body 2, which can achieve a stable connection between the electrode wire body 2 and the docking plate 3, avoiding poor contact during the operation of the implantable cardiac pacemaker, and the compressed elastic telescopic part provides a certain elastic force for the fixation of the electrode wire body 2, which can further improve the tightness of the fixing part in positioning the electrode wire body 2.

[0020] In one embodiment, specifically, the fixing part includes a plurality of groups of slide grooves 5 opened inside the docking plate 3 and arranged equidistantly around the axis thereof, an L-shaped clamping rod 6 is slidably installed inside each group of slide grooves 5, a round rod 7 slidingly passing through the L-shaped clamping rod 6 is installed inside the slide groove 5, and the top end of the L-shaped clamping rod 6 is connected to a fastener for controlling its movement, wherein an annular groove 8 corresponding to the L-shaped clamping rod 6 is opened on the outer ring of the end of the electrode wire body 2.

[0021] Correspondingly, the fastener includes a fastening screw 9 rotatably connected to the top of the docking plate 3, and a movable ring 10 is threadedly connected to the fastening screw 9. The outer ring of the movable ring 10 is connected to the top of each group of L-shaped clamping rods 6 through a hinged movable rod 11. The fastening screw 9 is rotated to drive the movable ring 10 to move, and the movable ring 10 drives the L-shaped clamping rod 6 to move inside the slide groove 5 through the movable rod 11. The ends of multiple groups of L-shaped clamping rods 6 are embedded in the annular groove 8, which can facilitate the positioning of the electrode wire body 2, and the round rod 7 is provided to improve the stability of the movement of the L-shaped clamping rod 6.

[0022] Furthermore, the top end of the fastening screw 9 extends to the knob 12 outside the connecting shell 1. Turning the knob 12 can easily drive the fastening screw 9 to rotate. A groove 13 for storing the knob 12 is provided on the top of the connecting shell 1 to prevent the knob 12 from being located outside the connecting shell 1, making it convenient for the implantable cardiac pacemaker to be implanted in the human body and inside. A cross slot 14 is provided at the top center of the knob 12 to facilitate medical staff to use tools to turn the knob 12.

[0023] On the basis of the above embodiment, specifically, the elastic telescopic part includes an extrusion plate 16 connected to the bottom of the baffle 4 through a spring 15, and the outer ring of the end of the electrode wire body 2 is provided with an insulating sleeve 17 abutting the extrusion plate 16. Furthermore, multiple groups of limiting rods 18 are installed between the bottom of the baffle 4 and the inner wall of the connecting shell 1, and the multiple groups of limiting rods 18 are all located in the inner ring of the spring 15 and are slidably connected to the extrusion plate 16.

[0024] During the process of inserting the end of the electrode wire body 2 into the interior of the connecting shell 1, the movement of the insulating sleeve 17 drives the extrusion plate 16 to slide inside the connecting shell 1, and the extrusion plate 16 drives the spring 15 to compress. The spring 15 can provide a certain elastic force for the fixed electrode wire body 2 and the insulating sleeve 17, thereby increasing the friction force at the contact point between the electrode wire body 2 and the L-shaped clamp rod 6, thereby improving the stability of the device fixation. A limit rod 18 is provided to assist the movement of the extrusion plate 16.

[0025] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An implantable cardiac pacemaker electrode lead fixing structure, characterized by: The invention comprises a connection shell (1) fixedly assembled with a pulse generator and an electrode wire body (2) for conducting electric pulses, wherein a docking plate (3) and a baffle (4) are arranged in parallel inside the connection shell (1), the center of the docking plate (3) abuts against the end of the electrode wire body (2), a fixing member for clamping the top of the electrode wire body (2) is installed on the top of the docking plate (3), and an elastic retractable member for assisting in fixing the electrode wire body (2) is installed on the bottom of the baffle (4).

2. The implantable cardiac pacemaker electrode lead fixing structure according to claim 1, characterized in that: The fixing member includes a plurality of groups of slide grooves (5) arranged equidistantly around the axis of the docking plate (3), each group of the slide grooves (5) is slidably installed with an L-shaped clamping rod (6), and the slide grooves (5) are installed with a round rod (7) that slides through the L-shaped clamping rod (6). The top end of the L-shaped clamping rod (6) is connected to a fastener for controlling its movement.

3. The implantable cardiac pacemaker electrode lead fixing structure according to claim 2, characterized in that: An annular groove (8) corresponding to the L-shaped clamping rod (6) is provided on the outer ring of the end of the electrode wire body (2).

4. The implantable cardiac pacemaker electrode lead fixing structure according to claim 3, characterized in that: The fastener comprises a fastening screw (9) rotatably connected to the top of the docking plate (3); a movable ring (10) is threadedly connected to the fastening screw (9); and the outer ring of the movable ring (10) is connected to the top end of each group of L-shaped clamping rods (6) through a hinged movable rod (11).

5. The implantable cardiac pacemaker electrode lead fixing structure according to claim 4, characterized in that: The top end of the fastening screw (9) extends to the knob (12) outside the connecting shell (1), the top of the connecting shell (1) is provided with a groove (13) for storing the knob (12), and the top center of the knob (12) is provided with a cross groove (14).

6. The implantable cardiac pacemaker electrode lead fixing structure according to any one of claims 1 to 5, characterized in that: The elastic telescopic member comprises an extrusion plate (16) connected to the bottom of the baffle (4) via a spring (15); the outer ring of the end of the electrode wire body (2) is provided with an insulating sleeve (17) abutting against the extrusion plate (16).

7. The implantable cardiac pacemaker electrode lead fixing structure according to claim 6, characterized in that: A plurality of groups of limiting rods (18) are installed between the bottom of the baffle (4) and the inner wall of the connecting shell (1), and the plurality of groups of limiting rods (18) are all located in the inner ring of the spring (15) and are slidably connected to the extrusion plate (16).

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