Radio frequency ablation operation equipment

Abstract

The utility model discloses radiofrequency ablation operation equipment which comprises a hard outer tube, a soft inner tube, a partition plate, a hard conductive tube, an insulating part, an emitting electrode, a thermocouple, a first traction wire and a second traction wire. The soft inner pipe is sleeved with the hard outer pipe, and one end of the soft inner pipe is led out of the hard outer pipe. The partition plate divides the inner space of the soft inner pipe into a first pipe cavity and a second pipe cavity. And the hard conductive tube is propped against one end of the soft inner tube, which is led out of the hard outer tube. The insulating part abuts against the end, away from the hard outer tube, of the hard conductive tube. The emitting electrode comprises an electrode wire and an emitting head, and the electrode wire is arranged in the first tube cavity and electrically connected with the emitting head. The thermocouple is arranged in the second tube cavity and one end of the thermocouple is located in the hard conductive tube. And the first traction wire and the second traction wire are arranged in the first tube cavity and are connected with the hard conductive tube. According to the radiofrequency ablation operation equipment, the temperature around the transmitting head can be monitored in real time, and the angle of the transmitting head can be flexibly adjusted.

Description

Technical Field

[0001] The utility model belongs to the technical field of surgical instruments, and in particular relates to radio frequency ablation surgical equipment. Background Art

[0002] At present, the minimally invasive surgical treatment options for disc herniation generally include perforaminal endoscopic discectomy, ozone disc minimally invasive ablation, and plasma ablation nucleoplasty. Among these three options, the perforaminal endoscope used in perforaminal endoscopic discectomy requires a lot of instruments under endoscope, and the overall surgical cost is high, which increases the burden on medical insurance and patients. Ozone disc minimally invasive ablation is suitable for disc-related low back pain, mild to moderate simple contained lumbar disc herniation, and has narrow indications. Plasma ablation nucleoplasty does not require a perforaminal endoscope and can be performed in more hospitals. At the same time, because the intradiscal nucleus pulposus is directly ablated, the nerve roots will not be damaged and bleeding at the lesion site will not be caused.

[0003] Plasma ablation nucleoplasty uses radiofrequency energy to vaporize a small amount of nucleus pulposus tissue and form a cavity inside the nucleus pulposus. In plasma cryoablation technology (Coblation Technology), the role of radiofrequency energy is to form a plasma field in the local tissue around the instrument and generate a large number of highly ionized particles. The energy carried by these particles is enough to cut off the connection between molecules in the tissue and form a cavity.

[0004] Currently, radiofrequency ablation devices have a single function and their angles are fixed and cannot be adjusted, which leads to the following problems during surgery:

[0005] 1. Unable to monitor the temperature of human tissue at the radiofrequency ablation site in real time: The therapeutic mechanism of radiofrequency ablation surgery is mainly thermal effect. When radiofrequency current flows through human tissue, the rapid change of electromagnetic field causes polar water molecules in human tissue to move at high speed, generating heat, causing the water inside and outside the cells to evaporate, dry, shrink and fall off, resulting in aseptic necrosis, thereby achieving the purpose of treatment. Therefore, the temperature of human tissue at the radiofrequency site is very important for the surgical effect, but existing radiofrequency ablation devices cannot monitor the temperature of human tissue in real time.

[0006] 2. Angle fixation cannot meet the needs of different intervertebral disc conditions: Since the angle of existing plasma radiofrequency ablation devices is fixed before leaving the factory and cannot be adjusted, when doctors use plasma radiofrequency ablation devices with a specific angle, they need to replace them with plasma radiofrequency ablation devices with other angles when a larger range of intervertebral disc coverage is required based on the patient's specific intervertebral disc condition and treatment needs. This is very inconvenient to use, delays surgery time, and increases patient pain. Therefore, existing radiofrequency ablation devices cannot flexibly adapt to intervertebral discs of different shapes and sizes.

[0007] 3. Unable to meet the treatment needs of curved intervertebral discs: Certain intervertebral disc diseases may involve curved intervertebral discs, such as scoliosis. Since the angle of existing plasma radiofrequency ablation devices is fixed, they cannot be bent to adapt to the treatment of such intervertebral discs, resulting in limited treatment effects.

[0008] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to a person skilled in the art. Utility Model Content

[0009] The utility model aims to provide a radiofrequency ablation surgical device, which can monitor the temperature around a transmitter head in real time during the operation through a thermocouple, and can flexibly adjust the angle of the transmitter head through a first traction wire and a second traction wire.

[0010] In order to achieve the above-mentioned purpose, a specific embodiment of the utility model provides a radiofrequency ablation surgical device, including a hard outer tube, a soft inner tube, a partition, a hard conductive tube, an insulating member, an emitter, a thermocouple, a first traction wire and a second traction wire. The soft inner tube is sleeved in the hard outer tube, and one end of the soft inner tube is led out from the hard outer tube. The partition is arranged in the soft inner tube and extends along the axial direction of the soft inner tube, and is used to divide the internal space of the soft inner tube into a first lumen and a second lumen. The hard conductive tube abuts against one end of the soft inner tube led out from the hard outer tube. The insulating member abuts against one end of the hard conductive tube away from the hard outer tube. The emitter includes an electrode wire and a transmitter head, the transmitter head is arranged at one end of the insulating member away from the hard outer tube, the electrode wire is arranged in the first lumen, and one end is led out from the soft inner tube and passes through the insulating member to be electrically connected to the transmitter head. The thermocouple is arranged in the second lumen, and one end of the thermocouple is led out from the soft inner tube and is located in the hard conductive tube. The first traction wire is arranged in the first lumen, and both ends are led out from the first lumen, and one end is electrically connected to the hard conductive tube. The second traction wire is arranged in the second lumen, and both ends are led out from the second lumen, and one end is electrically connected to the hard conductive tube.

[0011] In one or more embodiments of the present invention, the transmitting head is abutted against or fixed to the end surface of the insulating member.

[0012] In one or more embodiments of the present invention, an insulating layer is sleeved on the electrode wire, and one end of the insulating layer is abutted against one end of the emission head close to the hard outer tube.

[0013] In one or more embodiments of the present invention, the first pulling wire and the second pulling wire are connected to the inner wall of the hard conductive tube.

[0014] In one or more embodiments of the utility model, the radio frequency ablation surgical equipment also includes a handle and a rotating wheel. The handle is provided with a receiving cavity for receiving the rotating wheel. The end of the hard outer tube away from the transmitting head is fixedly connected to the handle. The ends of the first traction wire and the second traction wire away from the transmitting head are both located in the handle. On the axial projection of the rotating wheel, the first traction wire and the second traction wire are connected to different parts of the rotating wheel.

[0015] In one or more embodiments of the utility model, the radio frequency ablation surgical equipment also includes a connecting wire, a first transmission wire and a second transmission wire, both ends of the connecting wire are electrically connected to the first traction wire and the second traction wire respectively, one end of the first transmission wire is located in the receiving cavity and is electrically connected to the first traction wire, the second traction wire or the connecting wire, and the other end is led out from the receiving cavity, one end of the second transmission wire is located in the receiving cavity and is electrically connected to the electrode wire, and the other end is led out from the receiving cavity.

[0016] In one or more embodiments of the present invention, one end of the thermocouple away from the emission head passes through the receiving cavity and is led out from the receiving cavity.

[0017] In one or more embodiments of the present invention, the radiofrequency ablation surgical device further includes a wrench located outside the handle, and at least one end of the shaft of the rotating wheel penetrates the handle and is connected to the wrench.

[0018] In one or more embodiments of the present invention, the hard conductive tube is a metal tube.

[0019] In one or more embodiments of the present invention, the soft inner tube is made of insulating soft material.

[0020] Compared with the prior art, the radiofrequency ablation surgical device of the utility model can monitor the temperature around the transmitter head in real time during the operation through the thermocouple, so as to accurately control the temperature of the human tissue around the transmitter head and improve the treatment effect. In addition, the angle of the transmitter head can be flexibly adjusted through the first traction wire and the second traction wire, thereby improving the application range of the radiofrequency ablation surgical device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings described below are only some implementations recorded in the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 This is a three-dimensional structural diagram of a radiofrequency ablation surgical device in one embodiment of the utility model;

[0023] Figure 2 This is a diagram of the internal structure of a handle in one embodiment of the utility model;

[0024] Figure 3 This is a partial structural diagram of the interior of the handle in one embodiment of the utility model;

[0025] Figure 4 for Figure 3 A partial enlarged view of part A;

[0026] Figure 5 It is a partial cross-sectional view of a radiofrequency ablation surgical device in one embodiment of the utility model;

[0027] Figure 6 A cross-sectional view of a hard outer tube, a soft inner tube, an electrode wire, a thermocouple, a first pulling wire, and a second pulling wire in one embodiment of the utility model;

[0028] Figure 7 It is a three-dimensional structural diagram of a rotating wheel and a wrench in one embodiment of the utility model.

[0029] Explanation of main figure marks: 1. hard outer tube, 2. soft inner tube, 201. first tube cavity, 202. second tube cavity, 3. hard conductive tube, 4. insulating part, 5. emitter, 501. electrode wire, 502. emitter head, 6. thermocouple, 7. first traction wire, 8. second traction wire, 9. partition, 10. insulating layer, 11. handle, 1101. receiving cavity, 12. rotating wheel, 13. connecting wire, 14. wrench, 15. first transmission line, 16. second transmission line. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the implementation of the present invention will be clearly and completely described below in conjunction with the drawings in the implementation of the present invention. Obviously, the described implementation is only a part of the implementation of the present invention, not all of the implementations. Based on the implementation of the present invention, all other implementations obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0031] like Figures 1 to 7As shown, the radiofrequency ablation surgical device in one embodiment of the utility model comprises a hard outer tube 1, a soft inner tube 2, a hard conductive tube 3, an insulating member 4, an emitter 5, a thermocouple 6, a first traction wire 7 and a second traction wire 8. The soft inner tube 2 is sleeved in the hard outer tube 1, one end of the soft inner tube 2 is led out from the hard outer tube 1, and an axially extending partition 9 is provided in the soft inner tube 2, and the partition 9 divides the internal space of the soft inner tube 2 into a first lumen 201 and a second lumen 202. The hard conductive tube 3 is abutted to one end of the soft inner tube 2 led out from the hard outer tube 1. The insulating member 4 is abutted to one end of the hard conductive tube 3 away from the hard outer tube 1. The emitter 5 includes an electrode wire 501 and an emitter head 502. The emitter head 502 is arranged at one end of the insulating member 4 away from the hard outer tube 1. The electrode wire 501 is arranged in the first tube cavity 201. One end of the electrode wire 501 is led out from the soft inner tube 2 and passes through the insulating member 4 to be electrically connected to the emitter head 502. The thermocouple 6 is arranged in the second tube cavity 202. One end of the thermocouple 6 is led out from the soft inner tube 2 and extends into the hard conductive tube 3. The first traction wire 7 and the second traction wire 8 are made of conductive material. The first traction wire 7 is arranged in the first tube cavity 201 and its two ends are respectively led out from the first tube cavity 201 and one end is electrically connected to the hard conductive tube 3. The second traction wire 8 is arranged in the second tube cavity 202 and its two ends are respectively led out from the second tube cavity 202 and one end is electrically connected to the hard conductive tube 3.

[0032] In the above embodiment, the electrode wire 501, the thermocouple 6, the first traction wire 7 and the second traction wire 8 of the emitter 5 are electrically connected to an external host or other control device. The external host is used to provide radio frequency current to the emitter 5, so that the emitter head 502 of the emitter 5 generates radio frequency energy, forms a plasma field in the human tissue around the emitter head 502, and generates a large number of highly ionized particles, the energy carried by these particles is sufficient to cut off the connection between the molecules of the human tissue.

[0033] The external host is also used to receive the thermoelectromotive force signal of the thermocouple 6 and convert it into the temperature around the measured human tissue.

[0034] The first traction wire 7 and the second traction wire 8 are used to form a closed loop with the emitter 5 and the external host. The radio frequency current in the closed loop can flow in the following two directions:

[0035] External host - electrode wire 501 - transmitter head 502 - human tissue - hard conductive tube 3 - first traction wire 7 / second traction wire 8 - external host.

[0036] External host - first traction wire 7 / second traction wire 8 - hard conductive tube 3 - human tissue - transmitter 502 - external host.

[0037] According to the above structural design, after the transmitter 502 enters the designated part of the human body, the thermocouple 6 does not directly contact the human tissue, but receives the heat of the hard conductive tube 3 and the insulating member 4 and other components through heat conduction, so as to realize the real-time monitoring of the temperature of the human tissue during the operation. When it is necessary to adjust the angle of the transmitter 502, the first traction wire 7 is pulled from the end away from the transmitter 502, and the second traction wire 8 is loosened. At this time, the part of the soft inner tube 2 located in the hard outer tube 1 is restricted by the hard outer tube 1 and does not deform, while the part of the soft inner tube 2 drawn out from the hard outer tube 1 bends toward the direction of the first lumen 201, and drives the transmitter 502 to bend to a certain angle. The angle of the transmitter 502 can be flexibly adjusted, so that the radio frequency ablation surgical equipment can be applied to different types of operations. Of course, the angle of the transmitter 502 can also be adjusted by pulling the second traction wire 8.

[0038] like Figure 5 As shown, in order to accurately control the bending angle of the transmitter head 502, the transmitter head 502 abuts or is fixed to the end surface of the insulating member 4, that is, the transmitter head 502 is tightly attached to the insulating member 4, so that the transmitter head 502 and the insulating member 4 almost form an integrally connected structure, so that the transmitter head 502 can move synchronously with the insulating member 4.

[0039] like Figure 5 As shown, the electrode wire 501 and the first traction wire 7 are both located in the first tube cavity 201 of the soft inner tube 2. In order to avoid a short circuit after the electrode wire 501 contacts the first traction wire 7, an insulating layer 10 is sleeved on the electrode wire 501, and one end of the insulating layer 10 abuts against one end of the transmitting head 502 close to the hard outer tube 1.

[0040] In one embodiment, in order to improve the connection strength between the first traction wire 7 and the second traction wire 8 and the hard conductive tube 3 and prevent the first traction wire 7 and the second traction wire 8 from being separated from the hard conductive tube 3 when being pulled, the first traction wire 7 and the second traction wire 8 are extended into the hard conductive tube 3 and connected to the inner wall of the hard conductive tube 3. Specifically, welding or other connection methods can be used.

[0041] like Figure 2 and Figure 3 As shown, in order to facilitate the rapid adjustment of the angle of the transmitting head 502 during the operation, the radiofrequency ablation surgical equipment also includes a handle 11 with a receiving cavity 1101 and a rotating wheel 12 arranged in the receiving cavity 1101. The end of the hard outer tube 1 away from the transmitting head 502 is fixedly connected to the handle 11, and the ends of the hard outer tube 1, the soft inner tube 2, the electrode wire 501, the thermocouple 6, the first traction wire 7 and the second traction wire 8 away from the transmitting head 502 are all extended into the handle 11. On the axial projection of the rotating wheel 12, the first traction wire 7 and the second traction wire 8 are connected to different parts of the rotating wheel 12.

[0042] In one embodiment, in order to facilitate the formation of a stable radio frequency current loop, the radio frequency ablation surgical equipment also includes a connecting wire 13, a first transmission wire 15 and a second transmission wire 16. The two ends of the connecting wire 13 are electrically connected to the first traction wire 7 and the second traction wire 8 respectively. One end of the first transmission wire 15 is located in the receiving cavity 1101 and is electrically connected to the first traction wire 7, the second traction wire 8 or the connecting wire 13, and the other end is led out from the receiving cavity 1101. One end of the second transmission wire 16 is located in the receiving cavity 1101 and is electrically connected to the electrode wire 501, and the other end is led out from the receiving cavity 1101.

[0043] Furthermore, in order to facilitate the connection of the thermocouple 6 to the external host, one end of the thermocouple 6 away from the transmitter head 502 passes through the receiving cavity 1101 and is led out from the receiving cavity 1101 and connected to the external host.

[0044] In one embodiment, if Figure 1 and Figure 7 As shown, the radiofrequency ablation surgical device further includes a wrench 14 located outside the handle 11, and at least one end of the shaft of the rotating wheel 12 penetrates the shell wall of the handle 11 and is connected to the wrench 14. Specifically, when both ends of the shaft of the rotating wheel 12 penetrate the handle 11 at the same time, the wrench 14 can be constructed as a structure approximately in a U shape and is connected to the shaft of the rotating wheel 12 at the same time.

[0045] Considering that the hard conductive tube 3 often enters human tissue, which contains a large amount of water, and also ensuring that the hard conductive tube 3 has good thermal and electrical conductivity, the hard conductive tube 3 in this embodiment is a metal tube, specifically a steel tube.

[0046] The soft inner tube 2 in this embodiment is made of an insulating soft material, specifically a plastic tube, or a tube made of other soft insulating materials.

[0047] It should be noted that the use of the radiofrequency ablation surgical device in the embodiment of the utility model is not limited to minimally invasive surgery for intervertebral disc herniation, but can also be applied to other radiofrequency ablation surgeries.

[0048] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0049] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation mode may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A radiofrequency ablation surgical device, characterized in that: include: A hard outer tube (1); A soft inner tube (2) is sleeved inside the hard outer tube (1), and one end of the soft inner tube (2) is led out from the hard outer tube (1); a partition (9) disposed in the soft inner tube (2) and extending along the axial direction of the soft inner tube (2), and used for dividing the internal space of the soft inner tube (2) into a first tube cavity (201) and a second tube cavity (202); A hard conductive tube (3) abuts against one end of the soft inner tube (2) leading out from the hard outer tube (1); An insulating member (4) abuts against an end of the hard conductive tube (3) away from the hard outer tube (1); An emitter (5) comprising an electrode wire (501) and an emitter head (502), wherein the emitter head (502) is arranged at one end of the insulating member (4) away from the hard outer tube (1), the electrode wire (501) is arranged in the first tube cavity (201), and one end of the electrode wire (501) is led out from the soft inner tube (2) and passes through the insulating member (4) to be electrically connected to the emitter head (502); A thermocouple (6) is disposed in the second tube cavity (202), one end of the thermocouple (6) being led out from the soft inner tube (2) and located in the hard conductive tube (3); A first traction wire (7), which is disposed in the first tube cavity (201), and has two ends respectively led out of the first tube cavity (201), one end of which is electrically connected to the hard conductive tube (3); as well as The second traction wire (8) is arranged in the second tube cavity (202), and the two ends are respectively led out from the second tube cavity (202), and one end is electrically connected to the hard conductive tube (3).

2. The radiofrequency ablation surgical device according to claim 1, characterized in that: The transmitting head (502) is abutted against or fixed to the end surface of the insulating member (4).

3. The radiofrequency ablation surgical device according to claim 1, characterized in that: An insulating layer (10) is sleeved on the electrode wire (501), and one end of the insulating layer (10) is abutted against one end of the emission head (502) close to the hard outer tube (1).

4. The radiofrequency ablation surgical device according to claim 1, characterized in that: The first pulling wire (7) and the second pulling wire (8) are connected to the inner wall of the hard conductive tube (3).

5. The radiofrequency ablation surgical device according to claim 1, characterized in that: The radiofrequency ablation surgical device also includes a handle (11) and a rotating wheel (12); a receiving cavity (1101) for receiving the rotating wheel (12) is provided in the handle (11); one end of the hard outer tube (1) away from the transmitting head (502) is fixedly connected to the handle (11); one end of the first traction wire (7) and the second traction wire (8) away from the transmitting head (502) are both located in the handle (11); and on the axial projection of the rotating wheel (12), the first traction wire (7) and the second traction wire (8) are connected to different parts of the rotating wheel (12).

6. The radiofrequency ablation surgical device according to claim 5, characterized in that: The radiofrequency ablation surgical device also includes a connecting wire (13), a first transmission wire (15) and a second transmission wire (16); the two ends of the connecting wire (13) are electrically connected to the first traction wire (7) and the second traction wire (8), respectively; one end of the first transmission wire (15) is located in the receiving cavity (1101) and is electrically connected to the first traction wire (7), the second traction wire (8) or the connecting wire (13), and the other end is led out from the receiving cavity (1101); one end of the second transmission wire (16) is located in the receiving cavity (1101) and is electrically connected to the electrode wire (501), and the other end is led out from the receiving cavity (1101).

7. The radiofrequency ablation surgical device according to claim 5, characterized in that: One end of the thermocouple (6) away from the emission head (502) passes through the receiving cavity (1101) and is led out from the receiving cavity (1101).

8. The radiofrequency ablation surgical device according to claim 5, characterized in that: The radiofrequency ablation surgical device further comprises a wrench (14) located outside the handle (11); at least one end of the shaft of the rotating wheel (12) penetrates the handle (11) and is connected to the wrench (14).

9. The radiofrequency ablation surgical device according to claim 1, characterized in that: The hard conductive tube (3) is a metal tube.

10. The radiofrequency ablation surgical device according to claim 1, characterized in that: The soft inner tube (2) is made of insulating soft material.

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