A new cardiac pacemaker lead fixation device

Abstract

The utility model provides a novel cardiac pacemaker lead fixing device belongs to medical appliance technical field, this novel cardiac pacemaker lead fixing device, include: lead body, the inside of lead body is equipped with thin metal wire, and the surface is provided with rotating handle. The utility model: the lead body is passed through the protection sheath pipe, and the anchor head end structure of lead body one end is moved to the inside of heart, until the main helical silk of nickel titanium alloy is made on the anchor head end and is fixed with the outer layer of myocardium, further adjusts the rotating handle on the surface of lead body to make the electrode end continue to move, the diameter between a plurality of inner layer's auxiliary micro helical silk changes in the process of rotating to drive a plurality of anchor block rotation and move and pass through endocardium, cooperate a plurality of anchor block surface's anchor hook and enhance the stability of lead body fixed, realize the purpose of anchor head end grading anchor operation.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically a novel pacemaker lead fixing device. Background Technology

[0002] Cardiac pacing uses a pulse generator to deliver a wide and strong electrical pulse, which is conducted through lead electrodes to stimulate the heart, causing it to contract and pump sufficient blood to supply the whole body. This aims to treat cardiac dysfunction caused by certain arrhythmias. During use, a fixation device is needed to secure the lead wires and prevent tangling. A search of application CN202121201125.2 discloses a cardiac pacemaker fixation device comprising a pacemaker body, electrode pads, and a fixation device. The electrode pads are connected to the pacemaker body via lead wires. The fixation device includes a first fixation body and a second fixation body. The first fixation body is cylindrical and has a through-slot at its center through which the lead wires pass. The first fixation body has a lead groove along its circumference. The lead groove is spiral-shaped and distributed on the surface of the first fixation body along its axis. The second fixation body consists of a mounting block and a mounting plate. The mounting block is fixedly connected to the mounting plate, and the mounting plate is fixedly installed on the top of the pacemaker body. This allows for the winding and fixing of the electrode leads and the fixing of the electrode and leads onto the pacemaker body, which is convenient for use. However, the above description has the following drawbacks in actual use: the fixation device is not effective in fixing the leads, making them easy to fall off. Also, tearing open the protective sheath outside the leads during installation can cause minor injury to the patient and affect the installation effect. Therefore, a new type of cardiac pacemaker lead fixation device with strong practicality needs to be designed. Utility Model Content

[0003] The purpose of this invention is to provide a novel pacemaker lead fixing device to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a novel cardiac pacemaker lead fixing device, comprising: a lead body, wherein the lead body has a fine metal wire inside and a rotating handle is provided on its surface;

[0005] An anchoring assembly includes an anchoring head end installed at one end of the conductor body. An auxiliary sleeve is provided on the edge of the surface of the anchoring head end. A main spiral wire is provided on the side of the surface of the anchoring head end near the auxiliary sleeve. The middle part of the surface of the anchoring head end is connected to several auxiliary micro spiral wires through an electrode end. The other end of the several auxiliary micro spiral wires is fixedly connected to one side of several anchoring blocks. Several anchoring hooks are provided on the other side of the anchoring blocks.

[0006] A protective sheath is disposed outside the conductor body and is made of polylactic acid-glycolic acid copolymer.

[0007] As a preferred embodiment of this utility model: the anchor head end adopts a double helix structure, the main helix wire is the outer layer, and it is made of nickel-titanium alloy.

[0008] As a preferred embodiment of this utility model: several auxiliary micro-spiral filaments form the inner layer, and all of them can be spirally unfolded and adjusted.

[0009] As a preferred embodiment of this utility model: the other end of the lead body is provided with a connector, and the other end of the connector is provided with a pacemaker interface.

[0010] As a preferred embodiment of this utility model: the rotating handle is made of antibacterial rubber material and has an adjustment thread on its end face.

[0011] As a preferred embodiment of this utility model: one end of the protective sheath is designed in a tapered shape, and the other end of the protective sheath is provided with an auxiliary patch.

[0012] As a preferred embodiment of this utility model, the surface of the conductor body is designed to be insulated, and the overall material is made of a flexible material.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) By passing the lead body through the protective sheath and moving the anchoring head structure at one end of the lead body into the heart until the main spiral wire made of nickel-titanium alloy on the anchoring head rotates and is fixed to the outer layer of myocardium, the rotating handle on the surface of the lead body is further adjusted so that the electrode continues to move. During the rotation, the diameter between several auxiliary micro spiral wires in the inner layer changes, thereby driving several anchoring blocks to rotate and move through the endocardium. The anchoring hooks on the surface of several anchoring blocks enhance the stability of the lead body fixation, thus achieving the purpose of graded anchoring operation at the anchoring head.

[0015] (2) By inserting the protective sheath into the vein or other tissues, the lead body moves inside the protective sheath in conjunction with the fine metal wire, which increases the overall rigidity of the lead body and improves the convenience of the installation process. At the same time, the protective sheath made of polylactic acid-glycolic acid copolymer can be degraded inside after implantation, thereby avoiding the micro-displacement of the anchoring structure caused by tearing the protective sheath in the traditional way, and improving the effect of the lead body installation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the anchoring component structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the protective sheath structure of this utility model.

[0019] In the diagram: 1. Lead body; 11. Fine metal wire; 12. Rotating handle; 13. Connector; 14. Pacemaker interface; 2. Anchoring assembly; 21. Anchoring head end; 22. Auxiliary sleeve; 23. Main spiral wire; 24. Electrode end; 25. Auxiliary micro spiral wire; 26. Anchoring block; 27. Anchoring hook; 3. Protective sheath; 31. Auxiliary patch. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0021] Please see Figures 1-3 A novel pacemaker lead fixing device includes: a lead body 1, the inside of which is provided with a thin metal wire 11, and a rotating handle 12 is provided on the surface;

[0022] Please see Figure 2 Anchoring component 2 includes an anchoring head end 21 installed at one end of the conductor body 1. An auxiliary sleeve 22 is provided on the edge of the surface of the anchoring head end 21. A main spiral wire 23 is provided on the side of the surface of the anchoring head end 21 near the auxiliary sleeve 22. The middle part of the surface of the anchoring head end 21 is connected to several auxiliary micro spiral wires 25 through an electrode end 24. The other end of the several auxiliary micro spiral wires 25 is fixedly connected to one side of several anchoring blocks 26. Several anchoring hooks 27 are provided on the other side of the anchoring blocks 26.

[0023] In practical use: the lead body 1 is passed through the protective sheath 3, and the anchoring head 21 structure at one end of the lead body 1 is moved into the heart until the main spiral wire 23 made of nickel-titanium alloy on the anchoring head 21 rotates and is fixed to the outer layer of the myocardium. At the same time, the auxiliary sleeve 22 retracts, further adjusting the rotating handle 12 on the surface of the lead body 1, so that the electrode 24 continues to move. During the rotation, the diameter between several auxiliary micro spiral wires 25 in the inner layer changes, thereby driving several anchoring blocks 26 to rotate and move and pass through the endocardium. The anchoring hooks 27 on the surface of several anchoring blocks 26 enhance the stability of the lead body 1, so as to achieve the purpose of the graded anchoring operation of the anchoring head 21.

[0024] Please see Figure 3 The protective sheath 3 is located outside the conductor body 1 and is made of polylactic acid-glycolic acid copolymer.

[0025] In practical use: the protective sheath 3 is inserted into the vein or other tissues, and the lead body 1 moves inside the protective sheath 3 with the fine metal wire 11. This increases the overall rigidity of the lead body 1 and improves the ease of installation. At the same time, the protective sheath 3, made of polylactic acid-glycolic acid copolymer, can degrade internally after implantation, thereby avoiding the micro-displacement of the anchoring structure caused by tearing the protective sheath 3 in the traditional way, and improving the installation effect of the lead body 1.

[0026] Please see Figure 2 The anchor head end 21 adopts a double helix structure, with the main helix wire 23 as the outer layer, and is made of nickel-titanium alloy.

[0027] Several auxiliary micro-spiral filaments 25 form the inner layer, and all of them can be spirally unfolded and adjusted.

[0028] In practical use: the anchor head end 21 with a double helix structure, together with the outer main helix wire 23 and the inner auxiliary micro helix wires 25, can increase the stability of the conductor body 1 after installation.

[0029] Please see Figure 1 The other end of the lead body 1 is provided with a connector 13, and the other end of the connector 13 is provided with a pacemaker interface 14.

[0030] In practical use: the connector 13 at the other end of the lead body 1 is connected to the pacemaker interface 14 and electrically connected to the external cardiac pacemaker, thereby facilitating subsequent testing.

[0031] Please see Figure 1 The rotating handle 12 is made of antibacterial rubber material and has an adjustment thread on its end face.

[0032] In practical use: The rotating handle 12, made of antibacterial rubber material, can improve the antibacterial properties of the surgical procedure, and the adjustable thread can prevent slippage during adjustment.

[0033] Please see Figure 3 One end of the protective sheath 3 is designed with a tapered shape, and the other end of the protective sheath 3 is provided with an auxiliary patch 31.

[0034] In practical use: one end of the protective sheath tube 3 has a tapered design to assist in limiting the anchoring structure, and the auxiliary patch 31 at the other end is convenient for temporarily fixing the protective sheath tube 3 in special circumstances.

[0035] Please see Figure 1 The conductor body 1 has an insulating surface design and is made of a flexible material.

[0036] In practical use: The overall material is a flexible material for the conductor body 1, which is combined with a fine metal wire 11 to improve the overall rigidity. The surface insulation design of the conductor body 1 can prevent surface current from causing damage to the heart.

[0037] During use, the protective sheath 3, made of polylactic acid-glycolic acid copolymer, can degrade internally after implantation, avoiding the micro-displacement of the anchoring structure caused by tearing the protective sheath 3 in the traditional way. The lead body 1 is passed through the protective sheath 3, and the anchoring head 21 structure at one end of the lead body 1 is moved into the heart until the main spiral wire 23 made of nickel-titanium alloy on the anchoring head 21 rotates and is fixed to the outer layer of the myocardium. At the same time, the auxiliary sleeve 22 retracts, further adjusting the rotating handle 12 on the surface of the lead body 1, so that the electrode 24 continues to move. During the rotation, the diameter between several auxiliary micro spiral wires 25 in the inner layer changes, thereby driving several anchoring blocks 26 to rotate and move and pass through the endocardium. The anchoring hooks 27 on the surface of several anchoring blocks 26 enhance the stability of the lead body 1 fixation, realizing the purpose of the graded anchoring operation of the anchoring head 21.

[0038] The contents not described in detail in this description are existing technologies known to those skilled in the art. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A novel pacemaker lead fixing device, characterized in that, include: The conductor body (1) has a fine metal wire (11) inside and a rotating handle (12) on its surface; An anchoring assembly (2) includes an anchoring head end (21) installed at one end of the conductor body (1). An auxiliary sleeve (22) is provided on the edge of the surface of the anchoring head end (21). A main spiral wire (23) is provided on the side of the surface of the anchoring head end (21) near the auxiliary sleeve (22). The middle part of the surface of the anchoring head end (21) is connected to several auxiliary micro spiral wires (25) through an electrode end (24). The other end of several auxiliary micro spiral wires (25) is fixedly connected to one side of several anchoring blocks (26). Several anchoring hooks (27) are provided on the other side of the anchoring blocks (26). A protective sheath (3) is disposed outside the conductor body (1) and is made of polylactic acid-glycolic acid copolymer.

2. The novel pacemaker lead fixing device according to claim 1, characterized in that: The anchor head end (21) adopts a double helix structure, and the main helix wire (23) is the outer layer, which is made of nickel-titanium alloy.

3. The novel pacemaker lead fixing device according to claim 1, characterized in that: Several of the aforementioned auxiliary micro-spiral filaments (25) form the inner layer, and all of them can be spirally unfolded and adjusted.

4. The novel pacemaker lead fixing device according to claim 1, characterized in that: The other end of the lead body (1) is provided with a connector (13), and the other end of the connector (13) is provided with a pacemaker interface (14).

5. A novel pacemaker lead fixing device according to claim 1, characterized in that: The rotating handle (12) is made of antibacterial rubber material and has an adjustment thread on its end face.

6. The novel pacemaker lead fixing device according to claim 1, characterized in that: One end of the protective sheath (3) is designed in a tapered shape, and the other end of the protective sheath (3) is provided with an auxiliary patch (31).

7. A novel pacemaker lead fixing device according to claim 1, characterized in that: The conductor body (1) has a surface insulation design and is made of a flexible material.

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