Microwave ablation electrode for cardiac ablation

Abstract

The utility model belongs to the field of microwave ablation electrodes, and particularly relates to a microwave ablation electrode for cardiac ablation, which comprises an ablation tube, a wire inlet tube is fixedly connected to the upper end of the ablation tube, a damping mechanism is arranged on the wire inlet tube, and a handle frame is fixedly connected to the upper portion of the right end of the ablation tube. A turnover frame is hinged to the interior of the handle frame, and a supporting frame is arranged on the outer side of the turnover frame. The supporting frame, the overturning frame, the first spring and other structures are additionally arranged in the handle frame, in the holding process, fingers can be inserted between the supporting frame and the handle frame, and then the supporting frame is pushed through the elastic force of the first spring to extrude the fingers between the supporting frame and the handle frame; therefore, the handle frame can be limited on the outer sides of the fingers through the elastic force of the first spring, the device can be effectively prevented from being actively held, the fatigue degree of the fingers is reduced, and the device can be more stably held.

Description

Technical Field

[0001] The utility model relates to the technical field of microwave ablation electrodes, in particular to a microwave ablation electrode used for cardiac ablation. Background Art

[0002] According to the patent application publication number: CN111358552A, a microwave ablation electrode for ablation treatment of cancer thrombus obstruction is proposed. The invention relates to a microwave ablation electrode for ablation treatment of cancer thrombus obstruction, which belongs to the field of medical device technology. Among them, the microwave ablation electrode includes an ablation handle, a microwave input connector, a microwave electrode cooling water connector, a sliding sheath, a polymer insulation outer tube, a microwave transmission cable, a cooling capillary water inlet pipe, a cooling capillary water outlet pipe, and a microwave antenna receiving head. A microwave input connector and a microwave electrode cooling water connector are arranged in the ablation handle; the microwave input connector is connected to the microwave transmission cable; the microwave electrode cooling water connector includes a cooling water inlet connector and a cooling water outlet connector; the sliding sheath is arranged at the rear end of the cooling capillary water outlet pipe, and is connected to the front end of the ablation handle together with the cooling capillary water outlet pipe; the polymer insulation outer tube is arranged at the front end of the sliding sheath; one end of the microwave transmission cable is connected to the microwave input connector, and the other end is step-peeled, the inner core is connected to the microwave antenna receiving head, and the outer core is connected to the cooling capillary water outlet pipe. The present invention provides a microwave ablation electrode for ablation treatment of cancer thrombus obstruction, which performs intracavitary microwave ablation under ERCP combined with biliary stent placement to increase the patency period of the stent and the survival period of the patient.

[0003] However, the microwave ablation electrode in the prior art needs to hold the ablation tube for a long time during use. During the long-term holding process, the ablation tube needs to be held completely by the grip of the fingers. Relying solely on the grip during the long-term holding process can easily lead to unstable holding, affecting the quality of the operation. In addition, during the wire feeding process, it is not convenient to control the speed according to the specific wire feeding situation, making the device inconvenient to use. Therefore, it is necessary to improve the prior art. Utility Model Content

[0004] The utility model aims to provide a microwave ablation electrode for cardiac ablation, which solves the problem of unstable holding for a long time and inconvenient control of wire feeding speed caused by relying solely on finger gripping.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a microwave ablation electrode for cardiac ablation, comprising an ablation tube, a wire feed tube fixedly connected to the upper end of the ablation tube, a damping mechanism arranged on the wire feed tube, a handle frame fixedly connected to the upper right end of the ablation tube, a flip frame hingedly provided inside the handle frame, a support frame provided outside the flip frame, two symmetrically distributed springs arranged inside the handle frame, a limiting groove arranged inside the support frame close to the ablation tube, and an electrode wire slidably connected inside the wire feed tube.

[0006] Preferably, one end of the spring one is fixedly connected to the limiting groove inside the support frame, and the other end of the spring one is fixedly connected to the handle frame, and the spring one can support the support frame through elastic force.

[0007] Preferably, a waist hole is opened inside the flip frame, and the waist hole is movably connected to the connecting shaft of the support frame, and the waist hole can increase the movable range of the flip frame.

[0008] Preferably, the damping mechanism includes a damping block, a damping block is fixedly connected to the left portion of the inner wall of the wire feeding tube, the outer side of the electrode wire contacts with a rubber block, the end of the rubber block away from the electrode wire is fixedly connected to a fixing plate, the outer side of the fixing plate is fixedly connected to a steel wire, a spring 2 is arranged on the outer side of the steel wire, a guide wheel is installed on the outer side of the wire feeding tube, the end of the steel wire away from the fixing plate is fixedly connected to a pull-down frame, and the upper end of the handle frame is fixedly connected to two guide rods symmetrically distributed front and back, so that the electrode wire can be decelerated by the rubber block.

[0009] Preferably, the damping block is slidably connected to the electrode wire, and the steel wire is slidably connected to the wire feed tube, and the damping block can decelerate the electrode wire through the friction between the damping block and the electrode wire.

[0010] Preferably, one end of the second spring is fixedly connected to the fixed plate, and the other end of the second spring is fixedly connected to the inner wall of the wire feeding tube, and the second spring can support the fixed plate through elastic force.

[0011] Preferably, the guide wheel is in contact with the steel wire, the guide rod is slidably connected to the pull-down frame, and the guide wheel can guide the movement of the steel wire.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] 1. The utility model adds a support frame, a flip frame, a spring 1 and other structures inside the handle frame, so that the fingers can be inserted between the support frame and the handle frame during the holding process, and then the support frame is pushed by the elastic force of the spring 1 to squeeze the fingers between the support frame and the handle frame, so that the handle frame can be limited to the outside of the fingers by the elastic force of the spring 1, which can effectively avoid actively holding the device, reduce the degree of finger fatigue, and make the device more stable.

[0014] 2. The utility model adds structures such as damping blocks, rubber blocks and steel wires inside the wire feed tube. During use, the feeding speed of the electrode wire can be limited by the friction between the rubber block and the damping block and the electrode wire, thereby conveniently controlling the feeding speed of the electrode wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional diagram of the overall structure of the utility model;

[0016] Figure 2 For the utility model Figure 1 A three-dimensional enlarged view of the support frame;

[0017] Figure 3 For the utility model Figure 1 A magnified view of the structure of part A;

[0018] Figure 4 For the utility model Figure 1 An enlarged front view of the wire feed tube.

[0019] In the figure: 1. ablation tube; 2. wire feeding tube; 3. damping mechanism; 4. handle frame; 5. flip frame; 6. support frame; 7. spring one; 8. limit groove; 9. waist hole; 10. electrode wire; 31. damping block; 32. rubber block; 33. fixing plate; 34. steel wire; 35. spring two; 36. guide wheel; 37. pull-down frame; 38. guide rod. DETAILED DESCRIPTION

[0020] 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.

[0021] See also Figure 1 , Figure 2A microwave ablation electrode for cardiac ablation comprises an ablation tube 1, a wire inlet tube 2 is fixedly connected to the upper end of the ablation tube 1, a damping mechanism 3 is arranged on the wire inlet tube 2, a handle frame 4 is fixedly connected to the upper right end of the ablation tube 1, a flip frame 5 is hingedly arranged inside the handle frame 4, a support frame 6 is arranged on the outer side of the flip frame 5, two symmetrically distributed springs 7 are arranged inside the handle frame 4, a limiting groove 8 is arranged inside the support frame 6 close to the ablation tube 1, and an electrode wire 10 is slidably connected inside the wire inlet tube 2.

[0022] See also Figure 1 , Figure 2 One end of a spring 7 is fixedly connected to the limiting groove 8 inside the support frame 6, and the other end of a spring 7 is fixedly connected to the handle frame 4. The spring 7 can support the support frame 6 by elastic force. A waist hole 9 is opened inside the flip frame 5, and the waist hole 9 is movably connected to the connecting shaft of the support frame 6. The waist hole 9 can increase the range of motion of the flip frame 5.

[0023] See also Figure 1 , Figure 3 , Figure 4 The damping mechanism 3 includes a damping block 31, a damping block 31 is fixedly connected to the left part of the inner wall of the wire inlet tube 2, a rubber block 32 is in contact with the outer side of the electrode wire 10, a fixing plate 33 is fixedly connected to the end of the rubber block 32 away from the electrode wire 10, a steel wire 34 is fixedly connected to the outer side of the fixing plate 33, a spring 2 35 is arranged on the outer side of the steel wire 34, a guide wheel 36 is installed on the outer side of the wire inlet tube 2, a lower pull-down frame 37 is fixedly connected to the end of the steel wire 34 away from the fixing plate 33, and two guide rods 38 symmetrically distributed front and back are fixedly connected to the upper end of the handle frame 4, which can be moved by the rubber block 32 decelerates the electrode wire 10, the damping block 31 is slidably connected to the electrode wire 10, the steel wire 34 is slidably connected to the wire feeding tube 2, the damping block 31 can decelerate the electrode wire 10 by the friction between the electrode wire 10, one end of the spring 35 is fixedly connected to the fixed plate 33, the other end of the spring 35 is fixedly connected to the inner wall of the wire feeding tube 2, the spring 35 can support the fixed plate 33 by elastic force, the guide wheel 36 is in contact with the steel wire 34, the guide rod 38 is slidably connected to the lower pull-down frame 37, and the guide wheel 36 can guide the movement of the steel wire 34.

[0024] The specific implementation process of the utility model is as follows: when in use, the finger is inserted between the support frame 6 and the handle frame 4. During the finger insertion process, the spring 1 7 can be compressed. When the finger is inserted, the spring 1 7 can squeeze the support frame 6 to the outside of the finger through the elastic force generated by the elastic deformation, thereby preventing the finger from actively bending and holding, thereby ensuring that the finger does not become unstable during long-term use.

[0025] During use, the lower pull-down frame 37 is pulled downward, and the lower pull-down frame 37 drives the fixed plate 33 to move through the steel wire 34 and compresses the spring 2 35 , so that the contact force between the rubber block 32 and the electrode wire 10 can adjust the feeding speed of the electrode wire 10 .

[0026] Although 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 microwave ablation electrode for cardiac ablation, comprising an ablation tube (1), characterized in that: The upper end of the ablation tube (1) is fixedly connected to a wire feed tube (2), and a damping mechanism (3) is arranged on the wire feed tube (2). The upper right end of the ablation tube (1) is fixedly connected to a handle frame (4), and a flip frame (5) is hinged inside the handle frame (4). A support frame (6) is arranged on the outside of the flip frame (5). Two symmetrically distributed springs (7) are arranged inside the handle frame (4). A limiting groove (8) is provided inside the support frame (6) on a side close to the ablation tube (1), and an electrode wire (10) is slidably connected inside the wire feed tube (2).

2. A microwave ablation electrode for cardiac ablation according to claim 1, characterized in that: One end of the spring one (7) is fixedly connected to the limiting groove (8) inside the support frame (6), and the other end of the spring one (7) is fixedly connected to the handle frame (4).

3. A microwave ablation electrode for cardiac ablation according to claim 1, characterized in that: A waist hole (9) is provided inside the turning frame (5), and the waist hole (9) is movably connected to the connecting shaft of the supporting frame (6).

4. A microwave ablation electrode for cardiac ablation according to claim 1, characterized in that: The damping mechanism (3) comprises a damping block (31), the damping block (31) is fixedly connected to the left part of the inner wall of the wire feeding tube (2), the outer side of the electrode wire (10) contacts with a rubber block (32), the end of the rubber block (32) away from the electrode wire (10) is fixedly connected to a fixing plate (33), the outer side of the fixing plate (33) is fixedly connected to a steel wire (34), the outer side of the steel wire (34) is provided with a spring 2 (35), the outer side of the wire feeding tube (2) is installed with a guide wheel (36), the end of the steel wire (34) away from the fixing plate (33) is fixedly connected to a pull-down frame (37), and the upper end of the handle frame (4) is fixedly connected to two guide rods (38) symmetrically distributed front and rear.

5. A microwave ablation electrode for cardiac ablation according to claim 4, characterized in that: The damping block (31) is slidably connected to the electrode wire (10), and the steel wire (34) is slidably connected to the wire inlet tube (2).

6. A microwave ablation electrode for cardiac ablation according to claim 4, characterized in that: One end of the second spring (35) is fixedly connected to the fixing plate (33), and the other end of the second spring (35) is fixedly connected to the inner wall of the wire feeding tube (2).

7. A microwave ablation electrode for cardiac ablation according to claim 4, characterized in that: The guide wheel (36) is in contact with the steel wire (34), and the guide rod (38) is slidably connected to the pull-down frame (37).

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