Bidirectional adapter for connecting pacemaker leads to test equipment

Abstract

The present invention discloses a bidirectional adapter for connecting a pacemaker and testing equipment. The adapter comprises a conductive metal body located in the middle and two electrode sheets located at both ends of the conductive metal body. Both electrode sheets are provided with electrode connectors, which are respectively used to connect to the spring clips of the pacemaker's bridge wire and the spring clips of the testing equipment. Compared with the conventional direct clamping contact of the spring clips, the bidirectional adapter avoids the problems of the spring clips being easily damaged, the connection being loose, and the contact being poor when the two spring clips are directly clamped together in the prior art. The adapter increases the connection firmness of the damage current testing device, avoids electrical signal interference caused by poor contact, and improves conductivity and test accuracy. At the same time, the bidirectional adapter structure of this type helps increase the contact area, reduce measurement errors, ensure the provision of stable and reliable damage current measurement parameters, and improve the durability of the damage current testing device, reducing the damage rate and lowering costs.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical devices, and in particular relates to a bidirectional adapter for connecting a pacemaker lead and a test device. Background Art

[0002] One of the key steps in implanting a permanent cardiac pacemaker is testing the various parameters of the lead electrode, located at a specific location on the endocardium, to ensure they meet the requirements for long-term cardiac pacing. During testing of the pacing lead, due to the need for aseptic surgery, the lead's tail plug cannot be directly connected to the test equipment's connection line on the operating table. Instead, a sterile adapter cable or connector is required to connect the lead's tail connector to the test equipment's signal input line. This prevents contamination of the lead's tail plug and the surgical area. Currently, the most commonly used adapter cables in clinical practice are mostly homemade, two-strand wires with spring clip connectors at both ends, also known as bridge cables. These are sterilized with ethylene oxide and are used within their validity period for intraoperative testing of pacing lead parameters.

[0003] Currently, most pacemaker leads are fixed to the endocardial myocardium using an active spiral method, which can cause local myocardial damage and generate a current of injury (COI). During permanent pacemaker implantation, in addition to X-ray imaging and pacing parameters, determination of the COI is an important indicator of secure fixation of the lead tip. Currently, COI is typically recorded using a test device such as a polycardiogram or a standard electrocardiograph. This requires a bridge cable with spring clips at both ends. The spring clip at one end of the bridge cable is clamped to the pacing lead cathode, while the spring clip at the other end interlocks with the spring clip of the current injury test device. For example, the spring clip at the end of the bridge cable interlocks with the spring clip of the polycardiogram or with the spring clip of a lead in a 12-lead ECG. Repeated use of this method can easily loosen or damage the spring clip of the 12-lead ECG, compromising its usability. Loosening of the spring clips can also lead to significant clutter interference in lead V1, compromising the recording and measurement of COI. Summary of the Invention

[0004] The present invention aims to provide a bidirectional adapter for connecting a pacemaker lead and a test device, wherein the use of the bidirectional adapter improves the conductivity, firmness and test accuracy of a damage current test device.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, a bidirectional adapter for connecting a pacemaker and a test device is provided, comprising a conductive metal body located in the middle and two electrode sheets located at both ends of the conductive metal body; both electrode sheets are provided with electrode connectors, which are respectively used to connect to the spring clip of the bridge wire of the pacemaker and the spring clip of the test device.

[0006] According to the present invention, the conductive metal body has a cylindrical structure, and the two circular electrode sheets are disposed at both ends of the cylindrical conductive metal body. Preferably, the conductive metal body has a thickness of 14 mm to 20 mm and a diameter of 5 mm to 8 mm; the two electrode sheets have a thickness of 12 mm to 14 mm and a diameter of 3 mm to 4 mm.

[0007] According to the present invention, the electrode sheet is detachably arranged on the surface of the conductive metal body.

[0008] According to the present invention, the electrode sheet and the conductive metal body are formed integrally.

[0009] According to the present invention, the electrode connector is in the shape of a protruding nipple, and a tooth groove is provided on the outer surface thereof for matching with the tooth structure of the spring clip.

[0010] According to the present invention, the electrode connector is a snap-in groove recessed along the surface of the electrode sheet into the conductive metal body. The shape of the snap-in groove matches the outer structure of the spring clip. The spring clip is inserted into the snap-in groove and contacts the electrode sheet.

[0011] According to the present invention, the shape of the conductive metal body can be a cuboid, a cube, a polyhedron, or a cone structure.

[0012] According to the present invention, the electrical conductivity of the conductive metal body and the electrode sheet is 61-64×10 6 / m / Ω; the conductive metal body and the electrode sheet are made of metal silver-plated gold material.

[0013] According to the present invention, the bidirectional adapter may also have a Y-shaped or T-shaped multiple electrode structure.

[0014] Beneficial effects of the present invention:

[0015] 1) The bidirectional adapter provided by the present invention has a conductive metal body and two electrode sheets, and a conductive connector is provided on the electrode sheet, one end of which is connected to the wire bridge spring clip used to connect the pacemaker electrode wire, and the other end is connected to the spring clip of the damage current testing device. Compared with the traditional spring clip direct tooth clamp contact, the bidirectional adapter with this structure avoids the problems of easy damage and poor contact of the spring clips when the two spring clips are directly clamped and connected to each other in the prior art, increases the connection firmness of the damage current testing device, avoids electrical signal interference caused by poor contact, and improves conductivity and test accuracy.

[0016] 2) The bidirectional adapter of this structure abandons the direct clamping contact of the spring clip, which is beneficial to increase the contact area, reduce measurement errors, and ensure the provision of stable and reliable damage current measurement parameters. At the same time, it improves the durability of the damage current test device, reduces the damage rate, and reduces costs.

[0017] 3) The bidirectional adapter of this structure has detachable electrodes, and the disposable electrodes can be replaced repeatedly, which is low in cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the traditional bridge wire and 12-lead ECG connection method;

[0019] Figure 2 Schematic diagram of the connection structure of a bidirectional adapter used in an embodiment of the present invention. DETAILED DESCRIPTION

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and examples. However, these examples should not be construed as limiting the scope of protection of the present invention. All technologies implemented based on the above content of the present invention are encompassed within the scope of protection intended by the present invention.

[0021] Reference Figure 1 and Figure 2 The present invention provides a bidirectional adapter for connecting a pacemaker to a test device. The adapter comprises a conductive metal body 10 located in the middle and two electrode sheets 20 located at either end of the conductive metal body 10. Both electrode sheets 20 are provided with electrode connectors 21, which are respectively used to connect to a spring clip 40 of a bridge line 30 of the pacemaker and a spring clip 40 of the test device. Compared with the conventional direct tooth-clamping contact of spring clips, this bidirectional adapter avoids the problems of easy damage and poor contact when two spring clips are directly clamped together in the prior art. It increases the connection security of the damage current test device, avoids electrical signal interference caused by poor contact, improves conductivity and test accuracy, and helps increase the contact area, reduce measurement errors, and ensure the provision of stable and reliable damage current measurement parameters.

[0022] In one embodiment of the present invention, the conductive metal body 10 of the bidirectional adapter is cylindrical in structure, and the two electrode sheets 20 are circular and disposed at either end of the cylindrical conductive metal body 10. Preferably, the cylindrical conductive metal body 10 has a thickness of 14 mm to 20 mm and a diameter of 5 mm to 8 mm. The two electrode sheets 20 have a thickness of 12 mm to 14 mm and a diameter of 3 mm to 4 mm. Selecting a conductive metal body and electrode sheets within the above thickness and diameter ranges improves conductivity and facilitates spring clamp fixation.

[0023] The present invention preferably adopts the above-mentioned shape and structure of the bidirectional adapter, but is not limited thereto. The conductive metal body 10 of the bidirectional adapter may also be in the shape of a cuboid, a cube, a polyhedron or a cone.

[0024] In one embodiment of the present invention, the electrode sheet 20 of the bidirectional adapter is detachably mounted on the surface of the conductive metal body 10. The detachable electrode sheet allows for repeated replacement of disposable electrode sheets at low cost. In other embodiments of the present invention, the electrode sheet 20 and the conductive metal body 10 may also be integrally formed.

[0025] According to the present invention, Figure 2 As shown, the electrode connector 21 is in the shape of a protruding nipple, and a tooth groove is provided on the outer surface thereof for matching with the tooth structure of the spring clip 40 .

[0026] In other embodiments not shown in the figures, the electrode connector 21 of the bidirectional adapter is a snap-in groove that is recessed along the surface of the electrode sheet 20 toward the interior of the conductive metal body 10. The shape of the snap-in groove is adapted to the outer structure of the spring clip 40 so that the spring clip 40 can be easily inserted into the snap-in groove and contact the electrode sheet 20. This method has a larger contact area and is more secure.

[0027] Preferably, the electrical conductivity of the conductive metal body 10 and the electrode sheet 20 are both 61-64×10 6 Preferably, the conductive metal body 10 and the electrode sheet 20 may be made of a silver-gold-plated material.

[0028] According to the present invention, the bidirectional adapter may also have multiple electrode structures similar to Y-type and T-type, and may be connected to different testers through different test lines.

Claims

1. A bidirectional adapter for connecting a cardiac pacemaker and a test device, characterized in that: It comprises a conductive metal body (10) located in the middle and two electrode sheets (20) located at both ends of the conductive metal body (10); the two electrode sheets (20) are each provided with an electrode connector (21) for connecting to a spring clip (40) of a bridge line (30) of a cardiac pacemaker and a spring clip (40) of a test device, respectively; The conductive metal body (10) has a cylindrical structure, and the two electrode sheets (20) are circular and are arranged at both ends of the cylindrical conductive metal body (10); The conductive metal body (10) has a thickness of 14 mm to 20 mm and a diameter of 5 mm to 8 mm; the two electrode sheets (20) have a thickness of 12 mm to 14 mm and a diameter of 3 mm to 4 mm; The electrode sheet (20) is detachably arranged on the surface of the conductive metal body (10).

2. The bidirectional adapter according to claim 1, wherein: The electrode sheet (20) and the conductive metal body (10) are integrally formed.

3. The bidirectional adapter according to claim 1, wherein: The electrode connector (21) is in the shape of a protruding nipple, and a tooth groove is provided on the outer surface thereof for matching with the tooth structure of the spring clip (40).

4. The bidirectional adapter according to claim 1, wherein: The electrode connector (21) is a snap-fit ​​groove that is recessed along the surface of the electrode sheet (20) toward the interior of the conductive metal body (10). The shape of the snap-fit ​​groove is compatible with the external structure of the spring clip (40). The spring clip (40) is inserted into the snap-fit ​​groove and contacts the electrode sheet (20).

5. The bidirectional adapter according to claim 4, characterized in that: The conductive metal body (10) may be in the shape of a cuboid, a cube, a polyhedron, or a cone structure.

6. The bidirectional adapter according to any one of claims 1 to 5, characterized in that: The electrical conductivity of the conductive metal body (10) and the electrode sheet (20) are both 61-64×10 6 / m / Ω; The conductive metal body (10) and the electrode sheet (20) are made of silver-gold-plated metal materials.

7. The bidirectional adapter according to any one of claims 1 to 5, characterized in that: The bidirectional adapter may also have a Y-shaped or T-shaped multiple electrode structure.

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