A clamp-type temporary pacing lead

Abstract

The present invention provides a clamp-type temporary pacing lead, comprising: a clamp holder and a filling core; wherein the clamp holder comprises a hollow main body rod, one end of the main body rod is provided with a clamping control end, and the other end of the main body rod is an installation opening; furthermore, the filling core comprises an insulated wire, a pacing wire needle-shaped tail arranged at the first end of the insulated wire, and a clamp-shaped head arranged at the second end of the insulated wire; wherein the clamp-type temporary pacing lead comprises an assembled state and a separated state, and the filling core can be pulled out of the clamp holder in the assembled state installed in the clamp holder to achieve a separated state.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, in particular to a small-incision clip-type temporary pacing lead. Background Art

[0002] During cardiac surgery, temporary pacing wire implantation is often necessary due to poor cardiac function, abnormal heart rate before or during surgery, or to prevent postoperative arrhythmia.

[0003] Currently, temporary pacing leads are commonly used to be clamped with a needle holder and sutured to the myocardial surface. This procedure can be easily performed during a conventional thoracotomy. However, during minimally invasive surgery with a small incision, this procedure is often impossible due to the limited surgical field and operating space. This, in part, increases the cardiac function and heart rate requirements for the small incision approach. For patients who have completed minimally invasive surgery but did not suture the pacing lead, this also increases the risk of postoperative arrhythmias to a certain extent. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a small incision clip-type temporary pacing lead that is simple to operate and suitable for minimally invasive surgery in response to the above-mentioned defects in the prior art.

[0005] According to the present invention, a clamp-type temporary pacing lead is provided, comprising: a clamp and a filling core; wherein the clamp comprises a hollow main body rod, one end of the main body rod is provided with a clamping control end, and the other end of the main body rod is an installation opening; furthermore, the filling core comprises an insulated wire, a pacing wire needle-shaped tail arranged at the first end of the insulated wire, and a clamp-shaped head arranged at the second end of the insulated wire; wherein the clamp-type temporary pacing lead comprises an assembled state and a separated state, and the filling core can be pulled out of the clamp in the assembled state installed in the clamp to achieve a separated state.

[0006] Preferably, in the assembled state, the insulated wire of the filling core is inserted into the hollow part of the main rod so that the filling core is installed on the clamp, wherein the needle-shaped tail of the pacing wire is fixed on the clamp, and the clamp-shaped head is installed at the installation opening and the opening and closing of the clamp-shaped head is controlled by the clamping control end.

[0007] Further preferably, in the assembled state, the needle-shaped tail of the pacing wire passes through the clamp from the opening at the end where the clamping control end is located and is fixed to the outside of the clamp.

[0008] Preferably, the pacing wire needle tail falls off from the holder when the pulling force of the insulated wire exceeds a first threshold, so that the filling core is pulled out from the main body rod of the holder through the installation opening and enters a separated state from the assembled state.

[0009] Preferably, when the pulling force of the insulated wire on the clamp-shaped head exceeds a second threshold, the filling core is pulled out from the main rod of the clamp through the opening at the end where the clamping control end is located, thereby leaving the assembled state and entering the separated state.

[0010] Preferably, the clamp-shaped head is made of a plastic metal material and is conductive.

[0011] Preferably, the inner edge of the clamp-shaped head has textures.

[0012] Preferably, the tip of the clamp-shaped head is bent inwardly at a predetermined angle.

[0013] Preferably, the diameter of the clamp-shaped head in the closed state is smaller than the diameter of the insulated wire.

[0014] Preferably, the holder is made of metal material.

[0015] The present invention designs a temporary pacing wire head that is like a clip, which can grasp the myocardial surface with the help of a clamp holder, eliminating the suturing step and reducing the risk of accidental falling off and bleeding. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] A more complete understanding of the present invention and its attendant advantages and features will be more readily appreciated by reference to the following detailed description taken in conjunction with the accompanying drawings, in which:

[0017] Figure 1 The overall structural diagram of a small-incision clip-type temporary pacing lead according to a preferred embodiment of the present invention is schematically shown.

[0018] Figure 2 The overall structural diagram of the filling core of the small-incision clip-type temporary pacing lead according to the preferred embodiment of the present invention is schematically shown.

[0019] It should be noted that the accompanying drawings are intended to illustrate the present invention, not to limit it. Note that the accompanying drawings showing structures may not be drawn to scale. Furthermore, in the accompanying drawings, identical or similar elements are labeled with identical or similar reference numerals. DETAILED DESCRIPTION

[0020] In order to make the contents of the present invention clearer and easier to understand, the contents of the present invention are described in detail below with reference to specific embodiments and drawings.

[0021] The present invention is based on the following design concepts:

[0022] (1) A temporary clamp-shaped head of appropriate size, shape, and toughness can be designed to grasp the myocardial surface like a clamp with the help of a clamp holder, eliminating the need for suturing and reducing the risk of accidental detachment and bleeding.

[0023] (2) A matching clamp is designed to help the temporary pacing wire pass through a small incision and be fixed on the surface of the myocardium.

[0024] (3) Reduce the cost of use: The pacing lead is designed to be refillable, the clamp is made of medical metal and can be reused, and the filling core is a disposable consumable.

[0025] Specifically, Figure 1 The overall structural diagram of a small-incision clip-type temporary pacing lead according to a preferred embodiment of the present invention is schematically shown.

[0026] like Figure 1 As shown, the small-incision clip-type temporary pacing lead according to a preferred embodiment of the present invention includes: a clip holder 10 and a filling core 20.

[0027] The clamp holder 10 includes a hollow main body rod 11 , one end of the main body rod 11 is provided with a clamping control end 12 , and the other end of the main body rod 11 is a mounting opening.

[0028] Moreover, if Figure 2 As shown, the filling core 20 includes an insulated wire 21 , a pacing wire needle tail 22 disposed at a first end of the insulated wire 21 , and a clamp-shaped head 23 disposed at a second end of the insulated wire 21 .

[0029] The clip-type temporary pacing lead includes an assembled state and a separated state. The filling core 20 can be withdrawn from the clip holder 10 in the assembled state to achieve the separated state.

[0030] Preferably, in the assembled state, the insulated wire 21 of the filling core 20 is inserted into the hollow part of the main rod 11 so that the filling core 20 is installed on the clamp 10, wherein the pacing wire needle tail 22 is fixed on the clamp 10 (for example, inserted on the inner wall, end or outer wall of the clamp 10), and the clamp-shaped head 23 is installed at the installation opening and the opening (clamping) and closing (clamping) of the clamp-shaped head 23 are controlled by the clamping control end 12.

[0031] Further preferably, in the assembled state, the pacing wire needle-shaped tail 22 passes through the holder 10 from the opening at the end where the clamping control end 12 is located, and is fixed to the outside of the holder 10. This facilitates the extraction operation.

[0032] The opening and closing control of the clamping head by the clamping control end can be achieved by adopting any suitable structure in the mechanical field.

[0033] For example, the clamping head is made of a deformable material. By pulling the insulated wire 21 with the clamping control end 12, the clamping head is squeezed and deformed, thereby changing the clamping head from an open (clamped) state to a closed (clamped) state, thereby achieving a clamping action. In addition, by releasing the clamping control end 12 and pulling the insulated wire 21, the squeezed deformation is changed to an expanded state, thereby changing the clamping head from a closed (clamped) state to an open (clamped) state, thereby releasing the clamping control end 12.

[0034] For another example, the clamping head may also be a scissor-shaped structure, and the clamping control end can control the clamping control structure of the scissor-shaped structure, so that the clamping head opens and closes like a pair of scissors.

[0035] Preferably, the pacing wire needle tail 22 falls off from the holder 10 when the pulling force of the insulated wire 21 exceeds a first threshold, so that the filling core 20 is pulled out from the main rod 11 of the holder 10 through the installation opening and enters a separated state from the assembled state.

[0036] In another preferred embodiment, when the pulling force of the insulated wire 21 on the clamping head 23 exceeds a second threshold, the filling core 20 is pulled out from the main rod 11 of the clamp 10 through the opening at the end where the clamping control end 12 is located, and the filling core 20 is disassembled from the assembled state and enters the separated state.

[0037] Preferably, the clamp-shaped head 23 is made of a plastic metal material and is conductive.

[0038] Preferably, the inner edge of the clamp-shaped head 23 has textures to increase friction.

[0039] Preferably, the tip of the clamp-shaped head 23 is bent inward at a predetermined angle to better grip the myocardial surface.

[0040] Preferably, the diameter of the clamp-shaped head 23 in the closed state is smaller than the diameter of the insulated wire 21. Thus, since the diameter of the clamp-shaped head 23 is small after clamping, it can be pulled out of the wire hole along with the wire.

[0041] Preferably, the holder 10 is made of metal material.

[0042] The present invention is designed with a temporary clamp-shaped head that can grasp the myocardial surface with the help of a clamp holder, eliminating the need for suturing steps and reducing the risk of accidental falling off and bleeding.

[0043] The beneficial technical effects of the present invention include at least:

[0044] 1. Suitable for implantation of pacing leads after minimally invasive and small incision surgery, with simple operation and small field of view requirements.

[0045] 2. When the lead is pulled out, it avoids pericardial tamponade or excessive bleeding caused by bleeding due to the movement of the fixed point wire head in ordinary temporary pacing wires, and avoids the risk of infection caused by the lead remaining in the patient's body due to difficulty in pulling out.

[0046] In addition, it should be noted that, unless otherwise specified, the terms "first", "second", "third", etc. in the specification are only used to distinguish the various components, elements, steps, etc. in the specification, and are not used to indicate the logical relationship or sequential relationship between the various components, elements, steps, etc.

[0047] It is understood that although the present invention has been disclosed above with reference to preferred embodiments, the above embodiments are not intended to limit the present invention. For any person skilled in the art, without departing from the scope of the technical solution of the present invention, the technical content disclosed above can be used to make many possible changes and modifications to the technical solution of the present invention, or to modify it into an equivalent embodiment with equivalent changes. Therefore, any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A clamp-type temporary pacing lead, characterized in that include: holders and core-loading devices; in The clamp includes a hollow main rod, one end of which is provided with a clamping control end, and the other end of the main rod is an installation opening; moreover, the filling core includes an insulated wire, a pacing wire needle-shaped tail arranged at the first end of the insulated wire, and a clamp-shaped head arranged at the second end of the insulated wire; wherein, the clamp-type temporary pacing wire includes an assembled state and a separated state, and the filling core can be pulled out of the clamp when installed in the assembled state of the clamp to achieve a separated state.

2. The clamp-type temporary pacing lead according to claim 1, characterized in that: In the assembled state, the insulated wire of the filling core is inserted into the hollow part of the main rod to enable the filling core to be installed on the clamp, wherein the needle-shaped tail of the pacing wire is fixed on the clamp, and the clamp-shaped head is installed at the installation opening and the opening and closing of the clamp-shaped head is controlled by the clamping control end.

3. The clamp-type temporary pacing lead according to claim 1 or 2, characterized in that: In the assembled state, the needle-shaped tail of the pacing wire passes through the clamp from the opening at the end where the clamping control end is located and is fixed on the outside of the clamp.

4. The clamp-type temporary pacing lead according to claim 1 or 2, characterized in that: When the pulling force of the insulated wire exceeds a first threshold, the pacing wire needle tail falls off from the holder, so that the filling core is pulled out from the main body rod of the holder through the installation opening, leaving the assembled state and entering the separated state.

5. The clamp-type temporary pacing lead according to claim 1 or 2, characterized in that: When the pulling force of the insulated wire on the clamping head exceeds a second threshold, the filling core is drawn out from the main body rod of the clamp through the opening at the end where the clamping control end is located, thereby leaving the assembled state and entering the separated state.

6. The clamp-type temporary pacing lead according to claim 1 or 2, characterized in that: The clamp-shaped head is made of a plastic metal material and is conductive.

7. The clamp-type temporary pacing lead according to claim 1 or 2, characterized in that: The inner edge of the clamp-shaped head has texture.

8. The clamp-type temporary pacing lead according to claim 1 or 2, characterized in that: The tip of the clamp-shaped head is bent inwardly at a predetermined angle.

9. The clamp-type temporary pacing lead according to claim 1 or 2, characterized in that: The diameter of the clamp-shaped head in the closed state is smaller than the diameter of the insulated wire.

10. The clamp-type temporary pacing lead according to claim 1 or 2, characterized in that: The clamp holder is made of metal material.

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