Ablation tool bit for large-range plasma ablation

Abstract

The utility model discloses an ablation tool bit for large-range plasma ablation. The ablation tool bit comprises a guide tube, the front end of the guide tube is connected with a first loop electrode and a second loop electrode, and the first loop electrode and the second loop electrode are distributed in an oval shape in the length direction of the guide tube. The top ends of the first loop electrode and the second loop electrode are connected with sub-needles, the sub-needles are made of conductive materials such as platinum or titanium wires, and the ends, connected with the sub-needles, of the first loop electrode and the second loop electrode are respectively provided with an insulating layer. According to the utility model, the first loop electrode and the second loop electrode are distributed in the elliptical shape, have elasticity and can be implanted into an intervertebral disc or a vertebral body with compression fracture through puncture for ablation treatment; the elliptical first loop electrode and the elliptical second loop electrode are arranged to be matched with the sub-needle to rotate, so that the ablation range is remarkably enlarged, the operation is more convenient, and the pain of a patient is reduced.

Description

Technical Field

[0001] This utility model relates to the field of ion ablation technology, and in particular to a large-area plasma ablation ablation blade. Background Technology

[0002] Lumbar plasma ablation, especially low-temperature plasma radiofrequency ablation, is a non-surgical interventional method for treating lumbar pain. Lumbar plasma ablation mainly utilizes high-frequency electrical energy, which is introduced into the body through radiofrequency electrodes and placed at the corresponding treatment site under the guidance of contrast agents. By destroying or reducing nerve conduction in the lesion area or breaking the molecular bonds of the nucleus pulposus tissue, it causes the nucleus pulposus to decompose, vaporize, and ablate at low temperature, forming several ablation channels.

[0003] For example, the authorization announcement number is CN202426646U, the authorization announcement date is September 12, 2012, and the title is "A Low-Temperature Plasma Electrode for Lumbar Spine Ablation". It is assembled from a sub-needle, a circuit electrode sleeve, a circuit outer sleeve, a handle, a depth gauge, a wire, and a connector. The sub-needle is made of rare metal wire. The head of the sub-needle is conical. The part below the conical head of the sub-needle is connected to one end of the circuit electrode sleeve to form a circuit electrode. The other end of the circuit electrode sleeve is connected to one end of the circuit outer sleeve and inserted into the circuit outer sleeve for protection. The other end of the circuit outer sleeve is then inserted into the handle through the depth gauge. The handle is connected through the wire and the connector to form a bipolar circuit electrode.

[0004] Similar to the above application, the existing plasma ablation head has a strip-shaped circuit electrode, which results in a small ablation range during decomposition ablation treatment. When a larger ablation area is required, medical staff need to adjust the position of the plasma ablation head, which is cumbersome, increases patient pain, and is not convenient to use. Utility Model Content

[0005] The purpose of this invention is to overcome the limitations of existing plasma ablation heads, where the circuit electrodes are strip-shaped, resulting in a small ablation range during decomposition ablation treatment. Furthermore, when a larger ablation area is required, medical personnel need to adjust the position of the plasma ablation head, which is cumbersome, increases patient discomfort, and is inconvenient to use. This invention provides a large-area plasma ablation head with elliptical first and second circuit electrodes that are elastic. It can be implanted into the intervertebral disc or vertebral body with a compression fracture via puncture for ablation treatment. Compared to traditional single-needle ablation heads, the elliptical first and second circuit electrodes, combined with the sub-needle for rotational operation, significantly increase the ablation range, making operation more convenient and reducing patient discomfort.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] This utility model discloses a large-area plasma ablation ablation knife head, which is suitable for dissolving herniated discs and stopping bleeding and relieving pain in vertebral compression fractures, including a guide tube;

[0008] The front end of the guide tube is connected to a first circuit electrode and a second circuit electrode, and the first circuit electrode and the second circuit electrode are distributed in an elliptical shape along the length of the guide tube.

[0009] The first and second circuit electrodes are connected to a sub-needle at their top ends. The sub-needle is made of conductive material such as platinum or titanium wire. An insulating layer is provided at the end of the first and second circuit electrodes that is connected to the sub-needle. The insulating layer is made of PET insulating material.

[0010] Specifically, the first and second circuit electrodes in this plasma ablation head are elliptical in shape and elastic, and can be implanted into the intervertebral disc or vertebral body with compression fracture through puncture for ablation treatment. Compared with the traditional single-needle ablation head, the elliptical first and second circuit electrodes, together with the sub-needle, are rotated to significantly increase the ablation range, making the operation more convenient and reducing patient pain.

[0011] Preferably, an adjusting guide bar is movably embedded in the guide tube. The top end of the adjusting guide bar extends to the outside of the guide tube and connects to the tail end of the sub-needle. The first circuit electrode and the second circuit electrode are symmetrically distributed about the adjusting guide bar. Specifically, by setting the adjusting guide bar in the guide tube, the sub-needle can be adjusted during use to adjust the arc-shaped outward convex state of the first circuit electrode and the second circuit electrode, thereby controlling the ablation range and making it more convenient to use.

[0012] Preferably, the tail end of the adjusting guide extends to the outer side of the tail end of the guide tube and is connected to an adjusting handle. The tail end of the adjusting guide is also provided with a scale. Specifically, when adjusting the needle through the adjusting guide, the doctor can pull the adjusting guide by adjusting the adjusting handle, which is convenient to operate. At the same time, the scale can be set to assist in the reference adjustment operation.

[0013] Preferably, the adjusting guide bar is symmetrically and rotatably connected to a first adjusting side frame and a second adjusting side frame at the front end section of the guide tube. The tail end of the first adjusting side frame is rotatably connected to the middle section of the first circuit electrode, and the second adjusting side frame is rotatably connected to the middle section of the second circuit electrode. By setting the first adjusting side frame and the second adjusting side frame on the adjusting guide bar, when the adjusting guide bar is used to adjust the pin to achieve the arc-shaped outward convex state of the first circuit electrode and the second circuit electrode, the first adjusting side frame and the second adjusting side frame simultaneously limit the middle section of the first circuit electrode and the second circuit electrode, significantly improving the overall structural stability of the first circuit electrode and the second circuit electrode.

[0014] Preferably, the device also includes a puncture steel catheter, which is a hollow tubular structure. The guide tube is inserted inside the puncture steel catheter, and the front end of the guide tube can protrude out of or retract from the puncture steel catheter to achieve implantation through the puncture steel catheter.

[0015] Preferably, the tail end of the guide tube is provided with a threaded section outside the puncture steel catheter, and an annular limiting sleeve is spirally sleeved on the threaded section. By providing a threaded section and spirally sleeved with an annular limiting sleeve at the tail end of the guide tube, the implantation length of the guide tube can be limited by adjusting the position of the annular limiting sleeve during implantation through the puncture steel catheter, thereby improving the safety of the operation.

[0016] Compared with the prior art, this utility model has the following beneficial effects: The large-area plasma ablation ablation head has an elliptical first and second circuit electrode that is elastic. It can be implanted into the intervertebral disc or vertebral body with a compression fracture for ablation treatment. Compared with the traditional single-needle ablation head, the elliptical first and second circuit electrodes, combined with the sub-needle for rotational operation, significantly increase the ablation range, making operation more convenient and reducing patient pain. By setting an adjustment guide bar in the guide tube, the sub-needle can be adjusted during use to adjust the arc-shaped outward convexity of the first and second circuit electrodes, thereby controlling the ablation range and making it more convenient to use. Attached Figure Description

[0017] Figure 1 This utility model provides an overall structural schematic diagram of a large-area plasma ablation ablation blade;

[0018] Figure 2 This utility model provides a schematic diagram of the structure of the front end of the guide tube in a large-area plasma ablation ablation knife head;

[0019] Figure 3 This utility model provides a schematic diagram of the structure of the rear end of the guide tube in a large-area plasma ablation ablation tool;

[0020] Figure 4 This is a schematic diagram of the puncture steel conduit structure in this utility model.

[0021] Reference numerals: 1. Guide tube; 11. Threaded section; 12. Annular limiting sleeve; 2. First circuit electrode; 3. Second circuit electrode; 4. Sub-needle; 5. Insulating layer; 6. Adjusting guide bar; 61. Adjusting handle; 62. Scale; 63. First adjusting side bracket; 64. Second adjusting side bracket; 7. Puncture steel catheter. Detailed Implementation

[0022] The following is in conjunction with the appendix Figure 1 -Appendix Figure 4 This invention further illustrates the specific implementation of a large-area plasma ablation head, overcoming the limitations of existing plasma ablation heads with strip-shaped circuit electrodes. These electrodes result in a small ablation range during decomposition ablation treatment, and when a larger ablation area is required, medical personnel need to adjust the position of the plasma ablation head, which is cumbersome, increases patient discomfort, and is inconvenient to use. This invention provides a large-area plasma ablation head with elliptical first and second circuit electrodes that are elastic. It can be implanted into the intervertebral disc or vertebral body in a compression fracture for ablation treatment. Compared to traditional single-needle ablation heads, the elliptical first and second circuit electrodes, combined with a sub-needle for rotational operation, significantly increase the ablation range, making operation more convenient and reducing patient discomfort. This invention's large-area plasma ablation head is not limited to the embodiments described below.

[0023] Example 1:

[0024] A wide-range plasma ablation ablation tip, suitable for dissolving herniated discs and stopping bleeding and relieving pain in vertebral compression fractures, includes a guide tube 1.

[0025] The front end of the guide tube 1 is connected to a first circuit electrode 2 and a second circuit electrode 3, and the first circuit electrode 2 and the second circuit electrode 3 are distributed in an elliptical shape along the length of the guide tube 1.

[0026] The first circuit electrode 2 and the second circuit electrode 3 are connected to a sub-needle 4 at their top ends. The sub-needle 4 is made of conductive materials such as platinum or titanium wire. An insulating layer 5 is provided at the end of the first circuit electrode 2 and the second circuit electrode 3 connected to the sub-needle 4. The insulating layer 5 is made of PET insulating material.

[0027] Specifically, the first circuit electrode 2 and the second circuit electrode 3 in this plasma ablation head are elliptical in shape and elastic. They can be implanted into the intervertebral disc or the vertebral body with a compression fracture through puncture for ablation treatment. Compared with the traditional single needle ablation head, the elliptical first circuit electrode 2 and the second circuit electrode 3, together with the sub-needle 4, are rotated to significantly increase the ablation range, making the operation more convenient and reducing patient pain.

[0028] Example 2:

[0029] An adjusting guide bar 6 is movably embedded in the guide tube 1. The top end of the adjusting guide bar 6 extends to the outside of the guide tube 1 and connects to the tail end of the sub-needle 4. The first circuit electrode 2 and the second circuit electrode 3 are symmetrically distributed about the adjusting guide bar 6. Specifically, by setting the adjusting guide bar 6 in the guide tube 1, the sub-needle 4 can be adjusted during use to adjust the arc-shaped outward convex state of the first circuit electrode 2 and the second circuit electrode 3, thereby controlling the ablation range and making it more convenient to use.

[0030] Furthermore, the tail end of the adjusting guide 6 extends to the outer side of the tail end of the guide tube 1 and is connected to an adjusting handle 61. The tail end of the adjusting guide 6 is also provided with a scale 62. Specifically, when adjusting the needle 4 through the adjusting guide 6, the doctor can pull the adjusting guide 6 to adjust it by adjusting the handle 61. The operation is convenient, and the scale 62 can be set to assist in the reference adjustment operation.

[0031] Furthermore, the adjusting guide bar 6 is symmetrically and rotatably connected to a first adjusting side bracket 63 and a second adjusting side bracket 64 at the front end section of the guide tube 1. The tail end of the first adjusting side bracket 63 is rotatably connected to the middle section of the first circuit electrode 2, and the second adjusting side bracket 64 is rotatably connected to the middle section of the second circuit electrode 3. By setting the first adjusting side bracket 63 and the second adjusting side bracket 64 on the adjusting guide bar 6, when the adjusting guide bar 6 is used to adjust the pin 4 to adjust the arc-shaped outward convex state of the first circuit electrode 2 and the second circuit electrode 3, the first adjusting side bracket 63 and the second adjusting side bracket 64 simultaneously limit the middle section of the first circuit electrode 2 and the second circuit electrode 3, significantly improving the overall structural stability of the first circuit electrode 2 and the second circuit electrode 3.

[0032] Example 3:

[0033] It also includes a puncture steel catheter 7, which is a hollow tubular structure. The guide tube 1 is inserted inside the puncture steel catheter 7. The front end of the guide tube 1 can protrude out of or retract into the puncture steel catheter 7 to achieve implantation through the puncture steel catheter 7.

[0034] Furthermore, the tail end of the guide tube 1 is provided with a threaded section 11 outside the puncture steel catheter 7, and an annular limiting sleeve 12 is spirally sleeved on the threaded section 11. By providing a threaded section 11 and spirally sleeved with an annular limiting sleeve 12 at the tail end of the guide tube 1, the implantation length of the guide tube 1 can be limited by adjusting the position of the annular limiting sleeve 12 when implanting through the puncture steel catheter 7, thereby improving the safety of the operation.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A large range plasma ablation ablation head, comprising a guide tube (1), characterized in that: the front end of the guide tube (1) is connected with a first return electrode (2) and a second return electrode (3), and the first return electrode (2) and the second return electrode (3) are distributed in an elliptical shape along the length direction of the guide tube (1); the top end of the first return electrode (2) and the second return electrode (3) is connected with a sub-needle (4), and the end of the first return electrode (2) and the second return electrode (3) connected with the sub-needle (4) is provided with an insulating layer (5).

2. A large volume plasma ablation ablation tip according to claim 1, wherein: an adjusting guide bar (6) is movably embedded in the guide tube (1), the top end of the adjusting guide bar (6) extends to the outside of the guide tube (1) and is connected with the tail end of the sub-needle (4), and the first return electrode (2) and the second return electrode (3) are symmetrically distributed about the adjusting guide bar (6).

3. A large volume plasma ablation ablation tip according to claim 2, wherein: the tail end of the adjusting guide bar (6) extends to the tail end of the guide tube (1) and is connected with an adjusting handle (61), and the tail end of the adjusting guide bar (6) is further provided with a scale ruler (62).

4. A large volume plasma ablation ablation tip according to claim 3, wherein: the adjusting guide bar (6) is symmetrically rotatably connected with a first adjusting side frame (63) and a second adjusting side frame (64) at the front end section of the guide tube (1), the tail end of the first adjusting side frame (63) is rotatably connected with the middle section of the first return electrode (2), and the second adjusting side frame (64) is rotatably connected with the middle section of the second return electrode (3).

5. A large volume plasma ablation ablation tip according to claim 1, wherein: further comprising a puncture steel guide tube (7); the puncture steel guide tube (7) is an internal hollow tubular structure, the guide tube (1) is embedded in the puncture steel guide tube (7), and the front end of the guide tube (1) can protrude out of or retract into the puncture steel guide tube (7).

6. The large range plasma ablation ablation head according to claim 5, characterized in that: a threaded section (11) is arranged at the tail end of the guide tube (1) outside the puncture steel guide tube (7), and an annular limiting sleeve (12) is spirally sleeved on the threaded section (11).

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