Combined multifunctional radiofrequency thermocoagulation electrode

Abstract

The application discloses a combined multifunctional radio frequency heat condensation electrode, and relates to the technical field of medical devices.The radio frequency heat condensation electrode integrates ultrasonic guidance, temperature sensors, impedance sensors, nerve plexus stimulation needles, radio frequency heat condensation electrodes and other functions.The radio frequency heat condensation electrode is composed of a needle tube, an insulating layer, a sleeve seat, a lock cap, a sheath and the like; and various head structures are provided for clinical selection.The radio frequency probe is composed of a sheath tube, an electrode wire, a probe seat, a color code tube, a lead wire and a plug; an ultrasonic guidance mark is added to the front end of the probe, so that the radio frequency heat condensation electrode can be guided by ultrasonic waves when puncturing into a target site of a human body, and thus the harm of ionizing radiation to a patient is avoided.The radio frequency sleeve and the probe are locked together through the locking sleeve seat and the probe seat, and the combined multifunctional radio frequency heat condensation electrode can perform temperature measurement, impedance measurement, electric stimulation positioning, nerve block, radio frequency heat condensation and other operations after being connected with a radio frequency therapeutic instrument.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of medical devices, in particular to a combined multifunctional radiofrequency thermocoagulation electrode. BACKGROUND

[0002] Radiofrequency thermocoagulation technology is a minimally invasive treatment method. The intensity of the stimulating or damaging current emitted by the instrument can be controlled by the doctor according to clinical needs. Different diameters, lengths and shapes of puncture electrode needles are selected to form a selective and specific precise local damage focus. Radiofrequency thermocoagulation technology can be used for radiofrequency thermocoagulation treatment of chronic pain or intractable pain lasting more than one month, such as whole body neuralgia, intervertebral disc herniation, myofascial pain syndrome, etc.

[0003] At present, most of the products on the market for clinical use in China are radiofrequency cannulas or radiofrequency needles and radiofrequency probes or radiofrequency electrodes, which are provided by different suppliers, resulting in a large deviation of the position of the probe tip in the inner hole of the radiofrequency needle, which leads to a large error in temperature measurement. In addition, the radiofrequency needle has only one straight needle with a sharp tip, and there is no other head form. In addition, the surface of the needle tube from about 10mm away from the tip to the connection of the needle seat is usually sprayed with an insulating layer. The above scheme has the following disadvantages: (1) the head structure is relatively simple and cannot provide more clinical options; (2) the sharp straight needle is not suitable for use in areas with dense blood vessels or nerves, and it is more likely to damage blood vessels or nerves, causing heavy bleeding or loss of part of the intuition or even paralysis; (3) it is relatively difficult to approach the target point with a sharp straight needle, unless the operator is very familiar with human anatomy and has a lot of experience, and can puncture into place once under CT guidance, otherwise it needs to be repeatedly inserted and removed to adjust the direction, which causes muscle damage and pain to the patient and prolongs the operation time; (4) the sprayed insulating layer can only be ground to a sharp point before spraying to ensure the dimensional accuracy of the exposed working end at the front end, so it is easy to damage the tip during the spraying operation, resulting in a low yield. Therefore, in view of the above problems, the present technical scheme provides a combined multifunctional radiofrequency thermocoagulation electrode. SUMMARY

[0004] The application provides a combined multifunctional radio frequency thermocoagulation electrode, which is a flexible combined structure of a radio frequency sleeve and a radio frequency probe.

[0005] To solve the above technical problems, the application is implemented by the following technical scheme:

[0006] The combined multifunctional radio frequency thermocoagulation electrode integrates a radio frequency sleeve part, an ultrasonic guided radio frequency probe part, a radio frequency electrode and an injection port.

[0007] The radio frequency thermocoagulation electrode is composed of a needle tube, an insulating tube, a sleeve seat and a lock cap and a sheath to form a radio frequency sleeve, and is composed of a sheath tube, an electrode wire, a probe seat, a color code tube and a connecting wire to form a radio frequency probe.

[0008] Further, the radio frequency sleeve and the radio frequency probe are locked together through the sleeve seat and the probe seat.

[0009] Further, the sleeve seat is a three-way structure, the front end of the sleeve seat is fixedly connected with the needle tube, the rear end is a locking type inner conical joint, the locking type inner conical joint is locked and connected with the probe seat with a locking type outer conical joint; the side channel of the sleeve seat is provided with a locking type inner conical joint capable of connecting a syringe or a high-pressure extension tube, and the inner conical joint is provided with a lock cap.

[0010] Further, the surface of the needle tube is covered with the insulating tube, and a bare end distance is arranged between the needle tip of the needle tube and the top end of the insulating tube, which can be determined and changed according to clinical needs.

[0011] Further, the needle tube adopts a straight sharp needle type, a curved sharp needle type, a curved blunt needle type or a curved sharp needle side hole type.

[0012] Further, the front end of the sheath is engraved with a mesh line, a spiral line or regularly arranged pits for ultrasound guiding marks.

[0013] Further, the top end of the sheath is a closed semispherical shape, and the rear end is fixedly connected with the center of the locking type external circular joint of the probe seat.

[0014] Further, the electrode wire is arranged in the inner hole of the sheath, the outer surface of the electrode wire is covered with an insulating layer, and the inside and outside of the sheath are insulated; the top end of the electrode wire is in conduction with the top end of the inner hole of the sheath and is integrated; the rear end of the electrode wire is welded and connected with the lead wire and is sealed in the inner cavity of the probe seat by glue injection.

[0015] Further, the color mark tube is made of elastic material, and the color mark tube is sleeved with the rear end of the probe seat and the front end of the connecting lead wire, for providing a prompt of the working length of the electrode and protection of the connecting end of the lead wire.

[0016] Further, the lead wire is led out from the rear end of the color mark tube, the tail end of the lead wire is provided with a plug integrated with the lead wire, and a tapered honeycomb soft joint is adopted at the connection between the lead wire and the plug to avoid damage at the connection between the lead wire and the plug.

[0017] The present application has the following beneficial effects compared with the prior art:

[0018] The provided needle tube provides a variety of head structure options, including sharp head curved needle type, blunt head curved needle type and side hole curved needle type; the sharp head curved needle type is convenient for changing the puncture direction during the puncture process without needing to withdraw significantly to adjust the direction, thus facilitating puncture positioning, saving operation time and reducing patient damage and pain; the blunt head curved needle type is suitable for use in blood vessel and / or nerve dense areas to avoid damaging blood vessels or motor nerves; and the side hole curved needle type is suitable for treatment of target areas requiring a larger coagulation range to replace part of the original double needle mode for pain treatment.

[0019] The radiofrequency sleeve with a variety of head structures is provided for clinical selection, which reduces the damage and pain caused to patients during surgery, avoids the occurrence of complications caused by damage to blood vessels and motor nerves, simplifies the surgical steps, improves the accuracy of surgery, reduces the displacement caused by intraoperative instrument exchange, effectively improves the operation convenience and surgical efficiency; and especially, the ultrasound enhanced imaging design of the top end of the probe can avoid the harm of ionizing radiation to the operator and the patient.

[0020] The combined radio frequency electrode is a combined flexible structure of a radio frequency sleeve part and a radio frequency probe part; wherein the sleeve seat adopts a three-way inner conical locking joint, and the probe seat adopts an outer conical locking joint, so that the sheath tube of the probe can be inserted into the sleeve inner hole and locked, forming a combined structure, the distance between the probe sheath tube top end position and the needle tip is kept consistent, thereby keeping the temperature control precision of the radio frequency electrode when implementing ablation or thermal coagulation;

[0021] After the combined puncture, a syringe or a lengthened tube can be connected through the other channel of the sleeve seat to inject anesthetic to relieve pain during the treatment process;

[0022] The heat-shrinkable insulating tube replaces the sprayed insulation, thereby keeping the production continuity and avoiding damage of the radio frequency sleeve during transportation or spraying.

[0023] Of course, any product implementing the present application does not necessarily need to achieve all the advantages described above. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed for the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0025] Figure 1 It is a whole structure schematic diagram of a combined multifunctional radio frequency thermal coagulation electrode of the present application;

[0026] Figure 2 It is a schematic diagram of the structure and positional relationship of the sheath tube top end and the electrode wire;

[0027] Figure 3 It is an enlarged view of the head structure of the sharp-head bent needle type radio frequency sleeve in the specific embodiment;

[0028] Figure 4 It is a structure top view of Figure 3 ;

[0029] Figure 5 It is an enlarged view of the head structure of the blunt-head bent needle type radio frequency sleeve in the specific embodiment;

[0030] Figure 6 It is a structure top view of Figure 5 ;

[0031] Figure 7 It is an enlarged view of the head structure of the sharp-head bent needle type radio frequency sleeve in the specific embodiment;

[0032] Figure 8 It is a structure top view of Figure 7 ;

[0033] Figure 9 Figure 1 is a structural diagram of a combined radio frequency electrode and radio frequency ablation treatment instrument.

[0034] In the drawings, the components represented by the respective reference numerals are listed as follows:

[0035] 1 - radio frequency sleeve, 11 - needle tube, 12 - insulating tube, 13 - sleeve seat, 131 - locking inner conical joint, 14 - locking cap, 2 - radio frequency probe, 21 - sheath tube, 211 - front end, 22 - electrode wire, 23 - probe seat, 231 - locking outer joint, 24 - color code tube, 25 - connecting wire, 251 - plug. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0037] In the description of the present application, it should be understood that the terms "head", "end", "side", "rear end", "front end", "top end" and the like indicate the orientation or positional relationship, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the components or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0038] As shown in Figures 1-9 A combined multifunctional radio frequency thermocoagulation electrode of the present application integrates a radio frequency sleeve 1, an ultrasonic guided radio frequency probe 2, a radio frequency electrode and an injection port;

[0039] The radio frequency thermocoagulation electrode is composed of a needle tube 11, an insulating tube 12, a sleeve seat 13 and a locking cap 14 and a sheath 15 to form the radio frequency sleeve 1, and a sheath tube 21, an electrode wire 22, a probe seat 23, a color code tube 24 and a connecting wire 25 to form the radio frequency probe 2; the insulating tube 12 is a heat-shrinkable insulating tube, specifically a fep medical heat-shrinkable tube.

[0040] Among them, the radio frequency sleeve 1 and the radio frequency probe 2 are locked together through the sleeve seat 13 and the probe seat 23.

[0041] The sleeve seat 13 is a three-way structure, the front end of the sleeve seat 13 is fixedly connected with the needle tube 11, and the rear end is a locking type inner conical joint 131 which is locked and connected with the probe seat 23 with a locking type outer circular joint 231; the side channel of the sleeve seat 13 is provided with a locking type inner conical joint 132 which can be connected with a syringe or a high-pressure extension tube, and the inner conical joint 132 is provided with a lock cap 14.

[0042] The surface of the needle tube 11 is coated with an insulating tube 12, and a bare end distance is arranged between the needle tip of the needle tube 11 and the top end of the insulating tube 12, which can be determined and changed according to clinical needs, and a fixed-length bare end is reserved at the head according to clinical treatment needs.

[0043] The needle tube 11 is in a straight sharp needle type, a curved sharp needle type, a curved blunt needle type or a curved sharp needle side hole type.

[0044] The front end 211 of the sheath tube 21 is engraved with a reticular line, a spiral line or regularly arranged dimples for ultrasound guidance marks.

[0045] The top end of the sheath tube 21 is in a closed semispherical shape, and the rear end is fixedly connected with the center of the locking type outer circular joint 231 of the probe seat 23.

[0046] The electrode wire 22 is arranged in the inner hole of the sheath tube 21, the outer surface of the electrode wire 22 is coated with an insulating layer, and the inside and outside of the sheath tube 21 are insulated; the top end of the electrode wire 22 is in conduction with the top end of the inner hole of the sheath tube 21 and is integrated; the rear end of the electrode wire 22 is welded and connected with the lead wire 25 and is sealed in the inner cavity of the probe seat 23 by glue injection.

[0047] The color code tube 24 is made of elastic material, the color code tube 24 is sleeved on the rear end of the probe seat 23 and the front end of the connecting lead wire 25, and is used for providing a prompt of the working length of the electrode and protecting the connecting end of the lead wire.

[0048] The lead wire 25 is led out from the rear end of the color code tube 24, the tail end of the lead wire 25 is provided with a plug 251 which is integrated with the lead wire 25, and a conical honeycomb-shaped soft joint is adopted at the connection between the lead wire 25 and the plug 251 to avoid damage at the connection between the lead wire and the plug.

[0049] As Figure 1As shown, the insulated tube 12 is sleeved with the needle tube 11 and is mounted at the end of the radiofrequency sleeve 1, and is connected with the probe seat 23 through the locking inner cone joint 131 and the locking outer joint 231. The radiofrequency sleeve 1 and the probe seat 23 are combined flexible structure which can be separated, the probe seat 23 is connected with the outer cone locking joint at the root of the probe sheath through the three-way inner cone locking joint, so that the radiofrequency probe 2 can be inserted into the inner hole of the radiofrequency probe and then be locked, forming a combined structure, the distance between the needle tip of the needle tube and the top end of the insulated tube is the same, so as to keep the temperature control precision during the implementation of radiofrequency ablation or coagulation; at the same time, after the combined puncture, the syringe or the extension tube can be connected through the other channel of the sleeve seat to inject anesthetic to relieve the pain during the treatment.

[0050] As shown in Figure 2 , it is a schematic diagram of the positional relationship between the electrode wire 22 and the sheath tube 21 and the top end 211 of the sheath tube;

[0051] As shown in Figures 3-4 , the sharp head bent needle type is convenient for changing the puncture direction during the puncture process without needing to be withdrawn and adjusted, so as to facilitate the puncture positioning, save the operation time, and reduce the damage and pain of the patient;

[0052] As shown in Figures 5-6 , the blunt head bent needle type is suitable for use in blood vessel and / or nerve dense area to avoid damaging blood vessels or motor nerves;

[0053] As shown in Figures 7-8 , the side hole bent needle type is suitable for the treatment of target area which needs a larger coagulation range to replace part of the original double needle mode pain treatment;

[0054] The heat shrinkable insulated tube replaces the sprayed insulation, so as to keep the production continuity and avoid the damage of the radiofrequency sleeve during transportation or spraying;

[0055] As shown in Figure 9 , it is connected with the radiofrequency ablation treatment instrument during use, the needle tube 11 at the end of the insulated tube 12 is inserted into the position of the human muscle tissue and nerve node, and the needle tube 11 is just located at the position of the radiofrequency coagulation area; the radiofrequency ablation treatment instrument is conducted to the end of the needle tube 11 through the electrode wire, that is, high temperature heat energy is generated at the electrode end, so as to eliminate the damaged tissue.

[0056] The preferred embodiments of the application disclosed above are only to facilitate the elucidation of the application. The preferred embodiments do not describe all the details of the application and limit the application to the specific embodiments described. Obviously, many modifications and variations can be made in light of the teachings above. The description is chosen and described in order to best explain the principles of the application and its practical application to thereby enable others skilled in the art to best utilize the application and get the best results from the application. The application is only limited by the claims and their full scope and equivalents.

Claims

1. A combined multifunctional radiofrequency thermocoagulation electrode, characterized in that: The radiofrequency thermocoagulation electrode comprises a needle tube (11), an insulating tube (12), a tube seat (13), a locking cap (14) and a sheath (15) to form a radiofrequency tube (1); and a sheath tube (21), an electrode wire (22), a probe seat (23), a color code tube (24) and a connecting wire (25) to form a radiofrequency probe (2); The radio frequency sleeve (1) and the radio frequency probe (2) are locked together via a sleeve seat (13) and a probe seat (23); The cannula seat (13) is a three-way structure. The front end of the cannula seat (13) is fixedly connected to the needle tube (11), and the rear end is a locking inner conical joint (131). The locking inner conical joint (131) is locked and connected to the probe seat (23) with a locking outer circular joint (231); the side channel of the cannula seat (13) is provided with an inner conical joint (132) capable of connecting to a syringe or a high-pressure extension tube, and the inner conical joint (132) is provided with a locking cap (14); The surface of the needle tube (11) is covered with an insulating tube (12), and a bare end distance is provided between the needle tip of the needle tube (11) and the top end of the insulating tube (12); The front end (211) of the sheath tube (21) is engraved with mesh lines, spiral lines or regularly arranged pits for ultrasound guidance marking; The top end of the sheath tube (21) is in a closed hemispherical shape, and the rear end is fixedly connected to the center of the locking outer circular joint (231) of the probe seat (23); The electrode wire (22) is arranged in the inner hole of the sheath tube (21), the outer surface of the electrode wire (22) is covered with an insulating layer, and the inner and outer sides of the sheath tube (21) are insulated; the top end of the electrode wire (22) is connected to the top end of the inner hole of the sheath tube (21) and is connected as a whole; the rear end of the electrode wire (22) is welded to the wire (25) and is sealed in the inner cavity of the probe base (23) by injection of glue; The distance between the probe tip and the needle tip remains consistent, thereby maintaining the temperature control accuracy of the radiofrequency ablation needle electrode during ablation or thermal coagulation.

2. The combined multifunctional radiofrequency thermocoagulation electrode according to claim 1, characterized in that: The needle tube (11) is of a straight sharp needle type, a curved sharp needle type, a curved blunt needle type or a curved sharp needle side hole type.

3. The combined multifunctional radiofrequency thermocoagulation electrode according to claim 1, characterized in that: The color mark tube (24) is made of elastic material and is sleeved on the rear end of the probe seat (23) and the front end of the connecting wire (25) to provide a prompt for the electrode working length and protect the wire connection end.

4. The combined multifunctional radiofrequency thermocoagulation electrode according to claim 1, characterized in that: The wire (25) is led out from the rear end of the color standard tube (24), and the tail end of the wire (25) is provided with a plug (251) connected to the wire (25). The connection between the wire (25) and the plug (251) adopts a tapered honeycomb soft connection that can avoid damage to the connection between the wire and the plug.

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