A radiofrequency ablation electrode with multi-angle temperature monitoring

Abstract

A radiofrequency ablation electrode with multi-angle temperature monitoring includes a puncture needle assembly, a puncture needle tube assembly and a radiofrequency ablation electrode assembly, the puncture needle assembly includes a puncture needle core and a puncture needle core cap, the puncture needle core cap is fixedly installed at the rear end of the puncture needle core, the puncture needle tube assembly includes a puncture needle tube body and a puncture needle tube cap, the puncture needle tube cap is fixedly installed at the rear end of the puncture needle tube body, the radiofrequency ablation electrode assembly includes an electrode tube body and an electrode head, a multi-angle temperature probe is arranged on the electrode head, and an adjustment key assembly for adjusting the detection angle of the multi-angle temperature probe is arranged on the electrode tube body. Compared with the prior art, the present invention can monitor the real-time temperature of the ablation area more intensively by arranging a multi-angle temperature probe on the electrode head, can not only monitor the ablation temperature of the electrode head, but also judge the real-time temperature of the ablation area outside the electrode head, so that when the radiofrequency ablation operation is performed, it is possible to intuitively observe whether the ablation of the entire ablation area is completed.

Description

Technical Field

[0001] The invention relates to the technical field of medical equipment, and in particular to a radio frequency ablation electrode with multi-angle temperature monitoring. Background Art

[0002] Radiofrequency ablation therapy uses controlled temperature to act on ganglia, nerve trunks, nerve roots and intervertebral disc tissues to cause their proteins to coagulate and deform, thereby blocking the conduction of nerve impulses or retracting the herniated disc to relieve compression. It is a physical nerve block therapy that precisely controls the temperature of the distal end of the radiofrequency electrode and the selectivity of the nerves. The doctor controls the temperature and time of needle tip heating by adjusting the amount of current emitted and the duration of the current, thereby controlling the size of the damaged area. Radiofrequency is one of the safe and effective neurodestructive pain block treatment methods, and can be safely used in the first-order sensory neurons of many somatic sensory nerves, such as the semilunar ganglion, dorsal root ganglion of the spinal nerve and paravertebral ganglion.

[0003] When radiofrequency ablation is performed in existing products, the temperature detection point is generally set at the electrode tip. It is impossible to detect whether the temperature of the ablation area outside the electrode tip is appropriate. As a result, during the radiofrequency ablation surgery, it is impossible to visually observe whether the ablation around the entire ablation area is completed. Summary of the invention

[0004] In view of the above defects in the prior art, the present invention provides a radiofrequency ablation electrode with multi-angle temperature monitoring as follows:

[0005] The technical solution of the present invention is achieved in this way:

[0006] A radiofrequency ablation electrode with multi-angle temperature monitoring comprises a puncture needle assembly, a puncture needle tube assembly and a radiofrequency ablation electrode assembly, wherein the puncture needle assembly comprises a puncture needle core and a puncture needle core cap, wherein the puncture needle core cap is fixedly mounted at the rear end of the puncture needle core, the puncture needle tube assembly comprises a puncture needle tube body and a puncture needle tube cap, wherein the puncture needle tube cap is fixedly mounted at the rear end of the puncture needle tube body, the radiofrequency ablation electrode assembly comprises an electrode tube body and an electrode head, wherein the electrode head is arranged at the front end of the electrode head body, wherein a multi-angle temperature probe is arranged on the electrode head, wherein an adjustment key assembly for adjusting the detection angle of the multi-angle temperature probe is arranged on the electrode tube body, wherein the puncture needle tube body is sleeved on the outer periphery of the puncture needle core, wherein the electrode head body is sleeved on the outer periphery of the puncture needle tube body, wherein an electrode seat is arranged at the rear end of the electrode head body, wherein the electrode seat is connected to an electrode communication socket, wherein the electrode communication socket is connected to an electrode communication plug, wherein the electrode communication plug is connected to an radio frequency host connection plug via a cable.

[0007] Preferably, the multi-angle temperature probe includes an angle-adjustable four-claw umbrella-shaped rod detection head, which is installed at the electrode head end, and the expansion angle of the four-claw umbrella-shaped rod detection head can be adjusted by an adjustment key assembly, the adjustment key assembly includes an extension knob, a push rod and an adjustment spring, the extension knob is arranged at the rear end of the electrode tube body, and can move axially along the electrode tube body when rotated, the push rod is arranged inside the electrode tube body, and the front end of the push rod abuts the four-claw umbrella-shaped rod detection head, and the rear end of the push rod abuts the extension knob.

[0008] Preferably, four axial long strip grooves are arranged on the outer periphery of the electrode head, and the four umbrella-shaped rods of the four-claw umbrella-shaped rod detection head are respectively arranged in the long strip grooves, and a hook is arranged at the rear end of the umbrella-shaped rod, and a pin hole into which the hook can be inserted is arranged at the rear end of the long strip groove. The hook is inserted into the pin hole to hook the adjusting spring piece and abut against the front end of the push rod. When the front end of the push rod is pushed forward, the four umbrella-shaped rods are driven to expand the angle through the hook. After the front end of the push rod is retracted, the adjusting spring piece retracts the four umbrella-shaped rods through the hook.

[0009] Preferably, the depth of the elongated groove is greater than or equal to the diameter of the circumscribed circle of the axial section of the umbrella-shaped rod.

[0010] Preferably, the umbrella-shaped rod includes an umbrella-shaped rod body, a fully enclosed annular cutting edge and a temperature detection head. The fully enclosed annular cutting edge is distributed on the periphery of the umbrella-shaped rod body and the temperature detection head. The direction of the fully enclosed annular cutting edge is consistent with the direction of the expansion angle of the umbrella-shaped rod. A sheath groove of the fully enclosed cutting edge is provided in the elongated groove. When in the closed state, the fully enclosed cutting edge is hidden in the sheath groove. The temperature detection head is located at the tip of the umbrella-shaped rod. The temperature detection head is in the shape of a capsule and is surrounded by the fully enclosed cutting edge on the outside.

[0011] Preferably, the extension knob is provided with a starting position mark and an angle indication mark, and the electrode communication socket is installed on the axis of the extension knob.

[0012] Preferably, an insulating coating is provided on the electrode head.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] The radiofrequency ablation electrode with multi-angle temperature monitoring of the present invention can monitor the real-time temperature of the ablation area more intensively by arranging a multi-angle temperature probe on the electrode head. Not only can it monitor the ablation temperature of the electrode head, but also can judge the real-time temperature of the ablation area outside the electrode head, so that during the radiofrequency ablation operation, it is possible to intuitively observe whether the ablation of the entire ablation area is completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1It is a structural schematic diagram of a radiofrequency ablation electrode with multi-angle temperature monitoring according to the present invention;

[0016] Figure 2 It is a schematic diagram of the structure of the puncture needle assembly of the present invention;

[0017] Figure 3 It is a structural schematic diagram of the puncture needle tube assembly of the present invention;

[0018] Figure 4 It is a structural schematic diagram of the radiofrequency ablation electrode assembly of the present invention (the four-claw umbrella-shaped rod detection head is in a closed state);

[0019] Figure 5 It is a structural schematic diagram of the radiofrequency ablation electrode assembly of the present invention (the four-claw umbrella-shaped rod detection head is in the unfolded state);

[0020] Figure 6 It is a structural schematic diagram of the electrode head of the present invention (the four-claw umbrella-shaped rod detection head is in the unfolded state);

[0021] Figure 7 It is a structural schematic diagram of the electrode head of the present invention (without the four-claw umbrella-shaped rod detection head);

[0022] Figure 8 It is a structural schematic diagram of the extension knob of the present invention.

[0023] In the figure: puncture needle assembly 100, puncture needle core 110, puncture needle core cap 120, puncture needle tube assembly 200, puncture needle tube body 210, puncture needle tube cap 220, radiofrequency ablation electrode assembly 300, electrode tube body 310, long strip groove 321, umbrella rod 322, hook 323, pin hole 324, umbrella rod body 325, fully surrounded annular cutting edge 326, temperature detection head 327, electrode head 320, four-claw umbrella rod detection head 330, extension knob 340, starting position mark 341, angle indication mark 342, push rod 350, adjustment spring 360, electrode seat 410, electrode communication socket 420, the electrode communication socket 420, electrode communication plug 430, cable 440, radio frequency host connection plug 450. DETAILED DESCRIPTION

[0024] The present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0025] like Figures 1 to 8As shown, a radiofrequency ablation electrode with multi-angle temperature monitoring includes a puncture needle assembly 100, a puncture needle tube assembly 200 and a radiofrequency ablation electrode assembly 300, wherein the puncture needle assembly 100 includes a puncture needle core 110 and a puncture needle core cap 120, wherein the puncture needle core cap 120 is fixedly mounted at the rear end of the puncture needle core 110, the puncture needle tube assembly 200 includes a puncture needle tube body 210 and a puncture needle tube cap 220, wherein the puncture needle tube cap 220 is fixedly mounted at the rear end of the puncture needle tube body 210, and the radiofrequency ablation electrode assembly 300 includes an electrode tube body 310 and an electrode head 320, wherein the electrode head 320 is arranged at At the front end of the electrode head body 310, the electrode head 320 is provided with a multi-angle temperature probe, and the electrode tube body 310 is provided with an adjustment key assembly for adjusting the detection angle of the multi-angle temperature probe, the puncture needle tube body 210 is sleeved on the outer periphery of the puncture needle core 110, and the electrode head body 310 is sleeved on the outer periphery of the puncture needle tube body 210, and the electrode head body 310 is provided with an electrode seat 410 at the rear end of the electrode head body 310, and the electrode seat 410 is connected to an electrode communication socket 420, and the electrode communication socket 420 is connected to an electrode communication plug 430, and the electrode communication plug 430 is connected to the RF host connection plug 450 through a cable 440.

[0026] The multi-angle temperature probe includes an angle-adjustable four-claw umbrella-shaped rod detection head 330, which is installed at the end of the electrode head 320, and the expansion angle of the four-claw umbrella-shaped rod detection head 330 can be adjusted by adjusting the key assembly, the adjustment key assembly includes an extension knob 340, a push rod 350 and an adjustment spring 360, the extension knob 340 is arranged at the rear end of the electrode tube body 310, and can move axially along the electrode tube body 310 when rotated, the push rod 350 is arranged inside the electrode tube body 310, and the front end of the push rod 350 abuts against the four-claw umbrella-shaped rod detection head 330, and the rear end of the push rod 350 abuts against the extension knob 340.

[0027] Four axial long strip grooves 321 are arranged on the periphery of the electrode head 320, and the four umbrella-shaped rods 322 of the four-claw umbrella-shaped rod detection head 321 are respectively arranged in the long strip grooves 321, and a hook 323 is arranged at the rear end of the umbrella-shaped rod 322, and a pin hole 324 is arranged at the rear end of the long strip groove 321 for the hook 321 to be inserted. The hook 321 is inserted into the pin hole 324 to hook the adjusting spring piece 360 ​​and abut against the front end of the push rod 350. When the front end of the push rod 350 is pushed forward, the hook 321 drives the four umbrella-shaped rods 322 to expand their angles. After the front end of the push rod 350 is retracted, the adjusting spring piece 350 retracts the four umbrella-shaped rods 322 through the hook 321.

[0028] The depth of the long strip groove 321 is greater than or equal to the diameter of the circumscribed circle of the axial section of the umbrella-shaped rod 322 , ensuring that the umbrella-shaped rod 322 will not be higher than the outer surface of the electrode head 320 when it is recovered in the long strip groove 321 .

[0029] The umbrella-shaped rod 322 includes an umbrella-shaped rod body 325, a fully enclosed annular cutting edge 326 and a temperature detection head 327. The fully enclosed annular cutting edge 326 is distributed on the periphery of the umbrella-shaped rod body 325 and the temperature detection head 326. The direction of the fully enclosed annular cutting edge 326 is consistent with the direction of the unfolding angle of the umbrella-shaped rod 322. A sheath groove of the fully enclosed cutting edge is provided in the long strip groove 321. When in the closed state, the fully enclosed cutting edge is hidden in the sheath groove. The temperature detection head 326 is located at the tip of the umbrella-shaped rod 322. The temperature detection head 326 is in the shape of a capsule and is surrounded by the fully enclosed cutting edge on the outside.

[0030] The extension knob 340 is provided with a starting position mark 341 and an angle indication mark 342, and the electrode communication socket 420 is installed on the axis of the extension knob 340. The scale on the electrode communication socket 420 is divided into 12 grids. Each time the extension knob 340 passes a scale, it represents that the umbrella-shaped rod 322 is opened by 2.5 degrees, and a total of 12 grids can be opened to 30 degrees.

[0031] The electrode head 320 is provided with an insulating coating.

[0032] The four-claw umbrella-shaped rod detection head 321 includes four umbrella-shaped rods 322 arranged in sequence at the end of the electrode head 320 of the radiofrequency ablation electrode assembly, one every 90 degrees, for a total of four. In the closed state, the four umbrella-shaped rods 322 are retracted in the four long strip grooves 321 at the end of the electrode head 320, and the umbrella-shaped rods 322 cannot be higher than the arc surface at the end of the electrode head 320. When the extension knob 340 is turned, the four umbrella-shaped rods 322 begin to open synchronously at the same time. The maximum expansion angle of a single umbrella-shaped rod 322 can reach 30 degrees, and it can be gradually expanded in sequence according to the angle. Each time the knob scale is rotated one grid, it can be expanded by 2.5 degrees. The expansion angle is the angle between the umbrella-shaped rod 322 and the electrode tube body 310.

[0033] The method of using the present invention:

[0034] Use the puncture needle core to puncture the area to be treated, insert the radiofrequency ablation electrode with multi-angle temperature monitoring into the effective area through the puncture needle cannula, and observe whether it has reached the correct position under CT;

[0035] Adjust the four-claw umbrella-shaped rod detection head through the extension knob and unfold it to a suitable angle;

[0036] Start radiofrequency ablation of the affected area and observe the real-time temperature value monitored by the four-claw umbrella-shaped rod detector to determine the status of radiofrequency ablation.

[0037] The present invention has the following beneficial effects:

[0038] 1) Installing a probe with an extendable four-claw umbrella-shaped rod at the electrode tip can more intensively monitor the real-time temperature of the ablation area;

[0039] 2) The extension knob can be used to control the expansion angle of the four-claw umbrella-shaped rod detection head.

[0040] 3) The umbrella-shaped rod of the four-claw umbrella-shaped rod probe has a fully enclosed cutting edge, which can be used to cut the ablated tissue in real time when it is opened or closed, so as to achieve smooth expansion and contraction without damping;

[0041] 4) The four-claw umbrella-shaped probe head can be hidden in the electrode tube body;

[0042] 5) The four-claw umbrella-shaped rod detection head is insulated, without the risk of thermal damage;

[0043] 6) The puncture needle and puncture needle tube cooperate with the electrode to perform minimally invasive puncture until the patient's site;

[0044] From the structure and use of the present invention, it can be known that the radiofrequency ablation electrode with multi-angle temperature monitoring of the present invention can monitor the real-time temperature of the ablation area more intensively by arranging a multi-angle temperature probe on the electrode head. Not only can it monitor the ablation temperature of the electrode head, but also can judge the real-time temperature of the ablation area outside the electrode head, so that during the radiofrequency ablation surgery, it is possible to intuitively observe whether the ablation of the entire ablation area is completed.

Claims

1. A radiofrequency ablation electrode with multi-angle temperature monitoring, characterized in that: It includes a puncture needle assembly, a puncture needle tube assembly and a radiofrequency ablation electrode assembly, wherein the puncture needle assembly includes a puncture needle core and a puncture needle core cap, wherein the puncture needle core cap is fixedly mounted at the rear end of the puncture needle core, the puncture needle tube assembly includes a puncture needle tube body and a puncture needle tube cap, wherein the puncture needle tube cap is fixedly mounted at the rear end of the puncture needle tube body, the radiofrequency ablation electrode assembly includes an electrode tube body and an electrode head, wherein the electrode head is arranged at the front end of the electrode head body, wherein a multi-angle temperature probe is arranged on the electrode head, wherein an adjustment key assembly for adjusting the detection angle of the multi-angle temperature probe is arranged on the electrode tube body, wherein the puncture needle tube body is sleeved on the periphery of the puncture needle core, wherein the electrode head body is sleeved on the periphery of the puncture needle tube body, wherein an electrode seat is arranged at the rear end of the electrode head body, wherein the electrode seat is connected to an electrode communication socket, wherein the electrode communication socket is connected to an electrode communication plug, wherein the electrode communication plug is connected to a radio frequency host connection plug via a cable; The multi-angle temperature probe comprises a four-claw umbrella-shaped rod detection head with adjustable angles, four axial long strip grooves are arranged on the outer periphery of the electrode head, and the four umbrella-shaped rods of the four-claw umbrella-shaped rod detection head are respectively arranged in the long strip grooves; The umbrella-shaped rod includes an umbrella-shaped rod body, a fully enclosed annular cutting edge and a temperature detection head. The fully enclosed annular cutting edge is distributed on the periphery of the umbrella-shaped rod body and the temperature detection head. The direction of the fully enclosed annular cutting edge is consistent with the direction of the expansion angle of the umbrella-shaped rod. A sheath groove of the fully enclosed cutting edge is arranged in the elongated groove. When in the closed state, the fully enclosed cutting edge is hidden in the sheath groove. The temperature detection head is located at the tip of the umbrella-shaped rod. The temperature detection head is in the shape of a capsule and is surrounded by the fully enclosed cutting edge on the outside.

2. The radiofrequency ablation electrode with multi-angle temperature monitoring according to claim 1, characterized in that: The four-claw umbrella-shaped rod detection head is installed at the electrode head end, and the expansion angle of the four-claw umbrella-shaped rod detection head can be adjusted by adjusting the key assembly. The adjustment key assembly includes an extension knob, a push rod and an adjustment spring. The extension knob is arranged at the rear end of the electrode tube body and can move axially along the electrode tube body when rotated. The push rod is arranged inside the electrode tube body, and the front end of the push rod abuts against the four-claw umbrella-shaped rod detection head, and the rear end of the push rod abuts against the extension knob.

3. The radiofrequency ablation electrode with multi-angle temperature monitoring according to claim 2, characterized in that: A hook is provided at the rear end of the umbrella-shaped rod, and a pin hole into which the hook can be inserted is provided at the rear end of the elongated groove. The hook is inserted into the pin hole to hook the adjusting spring sheet and abut against the front end of the push rod. When the front end of the push rod is pushed forward, the four umbrella-shaped rods are driven to expand at an angle through the hook. After the front end of the push rod is retracted, the adjusting spring sheet retracts the four umbrella-shaped rods through the hook.

4. The radiofrequency ablation electrode with multi-angle temperature monitoring according to claim 3, characterized in that: The depth of the long strip groove is greater than or equal to the diameter of the circumscribed circle of the axial section of the umbrella-shaped rod.

5. The radiofrequency ablation electrode with multi-angle temperature monitoring according to claim 4, characterized in that: The extension knob is provided with a starting position mark and an angle indication mark, and the electrode communication socket is installed on the axis of the extension knob.

6. The radiofrequency ablation electrode with multi-angle temperature monitoring according to claim 1, characterized in that: An insulating coating is provided on the electrode head.

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