Combined multifunctional radio frequency thermal coagulation electrode

Abstract

The invention discloses a combined type multifunctional radio frequency thermal coagulation electrode, and relates to the technical field of medical instruments. The radio frequency thermal coagulation electrode integrates multiple functions of ultrasonic guidance, a temperature sensor, an impedance sensor, a nerve plexus stimulation needle, a radio frequency thermal coagulation electrode and the like. The radio frequency sleeve 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 wire and a plug. Wherein an ultrasonic guide mark is added at the front end of the probe, so that ultrasonic guide can be adopted when the radio frequency thermal coagulation electrode punctures and enters a target part of a human body, and the harm of ionizing radiation to a medical patient is avoided. The radio frequency sleeve and the probe are locked together through the locking sleeve seat and the probe seat. After the combined multifunctional radio frequency thermal coagulation electrode is connected with a radio frequency therapeutic apparatus, various operations such as temperature measurement, impedance measurement, electrical stimulation positioning, nerve blocking, radio frequency thermal coagulation and the like can be carried out.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and in particular relates to a combined multifunctional radio frequency thermocoagulation electrode. Background Art

[0002] Radiofrequency thermocoagulation technology is a minimally invasive treatment method. According to clinical needs, doctors can control the size of the stimulation or damaging current emitted by the instrument and select puncture electrode needles of different diameters, lengths and shapes to form selective, specific and precise localized damage foci. Radiofrequency thermocoagulation technology can be used for radiofrequency thermocoagulation treatment of chronic pain or intractable pain such as systemic neuralgia, intervertebral disc herniation, and myofascial pain syndrome that lasts for more than one month;

[0003] At present, most of the radiofrequency cannulas or radiofrequency needles and radiofrequency probes or radiofrequency electrodes are provided separately in the market in China, and they are often provided by different suppliers, resulting in large deviations in the position of the probe tip in the inner hole of the radiofrequency needle, resulting in large errors in the temperature measurement point. In addition, since radiofrequency needles only have one type of straight tube needle similar to the injection needle tip, and no other head forms, in addition, the surface of the needle tube from about 10 mm away from the needle tip to the connection with 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 use of sharp-headed straight needles is not suitable for use in human blood vessels or nerves. (1) It is easy to damage blood vessels or nerves in densely packed areas, causing massive bleeding or partial loss of sensation or even paralysis; (2) It is relatively difficult to approach the target with a sharp straight needle, unless the operator is very familiar with human anatomy and is very experienced and can perform the puncture in place under CT guidance. Otherwise, it is necessary to repeatedly plug and unplug the needle to adjust the direction, which may cause muscle damage and pain to the patient and prolong the operation time; (3) In order to ensure the dimensional accuracy of the exposed working end of the front end, the sprayed insulating layer can only be sharpened and then sprayed. Therefore, it is very easy to damage the needle tip during the spraying operation, resulting in a low yield rate; therefore, in response to the above problems, the present technical solution proposes a combined multifunctional radiofrequency thermocoagulation electrode. Summary of the invention

[0004] The present invention provides a combined multifunctional radio frequency thermocoagulation electrode, which is a combined flexible structure in which a radio frequency sleeve and a radio frequency probe can be detached. The sleeve seat adopts a three-way inner cone locking joint to be connected with the outer cone locking joint at the root of the probe sheath, so the probe can be inserted into the inner hole of the sleeve and locked to form a combined structure. The distance between the probe top position and the needle tip is kept consistent, thereby maintaining the temperature control accuracy of the radio frequency ablation needle electrode during ablation or thermocoagulation. At the same time, after the combined puncture, a syringe or an extension tube can be connected through another channel of the sleeve seat to inject anesthetic to relieve pain during treatment. In addition, the needle tube provided with a variety of heads provides The head structure selection includes sharp-head curved needle type, blunt-head curved needle type and side-hole curved needle type, which can reduce patient damage and pain, avoid damage to blood vessels and motor nerves, and provide RF cannulas with a variety of head structures for clinical selection, reducing damage and pain to patients during surgery, avoiding the occurrence of complications caused by damage to blood vessels and motor nerves, simplifying surgical steps, improving surgical accuracy, reducing displacement caused by intraoperative instrument exchange, and effectively improving operational convenience and surgical efficiency; heat-shrinkable insulating tubes are used instead of spray insulation to maintain production continuity and avoid damage to RF cannulas during transportation or spraying; in summary, the problems in the background technology are solved.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] A combined multifunctional radiofrequency thermocoagulation electrode of the present invention integrates a radiofrequency sleeve portion, an ultrasound-guided radiofrequency probe portion, a radiofrequency electrode and an injection port;

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

[0008] Furthermore, the radio frequency sleeve and the radio frequency probe are locked together via a sleeve seat and a probe seat.

[0009] Furthermore, the cannula seat is a three-way structure, the front end of the cannula seat is fixedly connected to the needle tube, and the rear end is a locking internal conical joint, which is locked and connected to the probe seat with a locking external circular joint; the side channel of the cannula seat has a locking internal conical joint that can be connected to a syringe or a high-pressure extension tube, and the internal conical joint is equipped with a locking cap.

[0010] Furthermore, the surface of the needle tube is coated with an insulating tube, and an exposed end distance is provided between the needle tip of the needle tube and the top end of the insulating tube, and the exposed end distance can be predetermined and changed according to clinical needs.

[0011] Furthermore, 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] Furthermore, the front end of the sheath tube is engraved with mesh lines, spiral lines or regularly arranged pits for ultrasound guidance marking.

[0013] Furthermore, the top end of the sheath tube is in a closed hemispherical shape, and the rear end is fixedly connected to the center of the locking external circular joint of the probe seat.

[0014] Furthermore, the electrode wire is arranged in the inner hole of the sheath tube, the surface of the electrode wire is covered with an insulating layer, and the inside and outside of the sheath tube are insulated; the top end of the electrode wire is connected to the top end of the inner hole of the sheath tube and connected as a whole; the rear end of the electrode wire is welded to the wire and sealed in the inner cavity of the probe seat by glue injection.

[0015] Furthermore, the color-standard tube is made of elastic material and is sleeved on the rear end of the electrode holder and the front end of the connecting wire to provide a reminder of the working length of the electrode and protect the connecting end of the wire.

[0016] Furthermore, the wire is led out from the rear end of the color standard tube, and the tail end of the wire is equipped with a plug connected to the wire. The connection between the wire and the plug adopts a conical honeycomb soft connection that can avoid damage to the connection between the wire and the plug.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] (1) The needle tubes provided provide a variety of head structure options, including sharp-tip curved needle type, blunt-tip curved needle type and side-hole curved needle type; the sharp-tip curved needle type is convenient for changing the puncture direction during puncture, without the need to withdraw significantly and adjust the direction, thus facilitating puncture positioning, saving operation time, and reducing patient damage and pain; the blunt-tip curved needle type is suitable for use in areas with dense blood vessels and / or nerves to avoid damaging blood vessels or motor nerves; the side-hole curved needle type is suitable for treatments that require a larger range of thermal coagulation in the target area, replacing some pain treatments that originally required a double-needle mode;

[0019] (2) It provides a variety of radiofrequency cannulas with different head structures 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 surgical steps, improves surgical accuracy, reduces displacement caused by intraoperative instrument exchange, and effectively improves operational convenience and surgical efficiency; in particular, the ultrasound-enhanced imaging design at the top of the probe can help operators and patients avoid the hazards of ionizing radiation;

[0020] (3) The combined RF electrode is a detachable combined flexible structure with a RF sleeve part and a RF probe part; 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 of the probe can be inserted into the inner hole of the sleeve and locked to form a combined structure, and the distance between the top position of the probe sheath and the needle tip is kept consistent, thereby maintaining the temperature control accuracy of the RF electrode during ablation or thermal coagulation;

[0021] (4) After the combined puncture, an anesthetic can be injected through another channel of the cannula seat by connecting a syringe or an extension tube to relieve pain during the treatment process;

[0022] (5) Heat shrinkable insulation tubes are used instead of spray insulation, thus maintaining production continuity and avoiding damage to the RF sleeve during transportation or spraying.

[0023] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0025] Figure 1 This is a schematic diagram of the overall structure of a combined multifunctional radio frequency thermocoagulation electrode of the present invention;

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

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

[0028] Figure 4 for Figure 3 A top view of the structure;

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

[0030] Figure 6 for Figure 5 A top view of the structure;

[0031] Figure 7 It is an enlarged view of the head structure of the radio frequency cannula with sharp curved needle and side hole in a specific embodiment;

[0032] Figure 8 for Figure 7A top view of the structure;

[0033] Fig. 9 This is a structural diagram of the combined radio frequency electrode and radio frequency ablation therapeutic device of this technical solution.

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

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

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

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

[0038] like Figure 1-9 As shown, a combined multifunctional radiofrequency thermocoagulation electrode of the present invention integrates a radiofrequency sleeve 1, an ultrasound-guided radiofrequency probe 2, a radiofrequency 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, a locking cap 14 and a sheath 15 to form a 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 a radio frequency probe 2; the insulating tube 12 is a heat shrinkable insulating tube, specifically a FEP medical heat shrinkable tube.

[0040] The radio frequency sleeve 1 and the radio frequency probe 2 are locked together via the sleeve seat 13 and the probe seat 23 .

[0041] Among them, 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 cone joint 131, and the locking inner cone joint 131 is locked and connected to the probe seat 23 with a locking outer cone joint 231; the side channel of the cannula seat 13 is provided with a locking inner cone joint 131 that can be connected to a syringe or a high-pressure extension tube, and the inner cone joint 131 is provided with a locking cap 14.

[0042] Among them, the surface of the needle tube 11 is covered with an insulating tube 12, and an exposed end distance is set between the needle tip of the needle tube 11 and the top of the insulating tube 12. The exposed end distance can be predetermined and changed according to clinical needs, and a fixed length of exposed end is retained on the head according to clinical treatment needs.

[0043] 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.

[0044] The front end 211 of the sheath tube 21 is engraved with mesh lines, spiral lines or regularly arranged pits for ultrasound guidance marking.

[0045] 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 base 23 .

[0046] Among them, the electrode wire 22 is arranged in the inner hole of the sheath tube 21, the surface of the electrode wire 22 is covered 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 connected to the top end of the inner hole of the sheath tube 21 and 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 seat 23 by glue injection.

[0047] The color-coded tube 24 is made of elastic material and is sleeved on the rear end of the electrode holder 23 and the front end of the connecting wire 25 to provide a reminder of the electrode working length and protect the connecting end of the wire.

[0048] 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 equipped with a plug 251 connected to the wire 25. The connection between the wire 25 and the plug 251 adopts a conical honeycomb soft connection that can avoid damage to the connection between the wire and the plug.

[0049] like Figure 1As shown, the insulating tube 12 is provided with a needle tube 11, which is installed at the end of the radio frequency sleeve 1, and is locked and connected with the probe seat 23 through the locking inner cone joint 131 and the locking outer round joint 231. The radio frequency sleeve 1 and the probe seat 23 are a detachable and separable combined flexible structure. The probe seat 23 is connected to the outer cone locking joint at the root of the probe sheath by a three-way inner cone locking joint, so the radio frequency probe 2 can be inserted into the inner hole of the radio frequency probe and locked to form a combined structure. The distance between the needle tip and the top of the insulating tube is the same, thereby maintaining the temperature control accuracy of the radio frequency ablation needle electrode during ablation or thermal coagulation; at the same time, after the combined puncture, the syringe or extension tube can be connected through another channel of the sleeve seat to inject anesthetics to relieve pain during treatment.

[0050] like Figure 2 , which is a schematic diagram of the positional relationship between the electrode wire 22, the sheath tube 21, and the sheath tube top 211;

[0051] like Figure 3-4 As shown in the figure, the sharp curved needle type is convenient for changing the puncture direction during the puncture process, without the need to withdraw the needle significantly and adjust the direction, thus facilitating puncture positioning, saving operation time, and reducing the patient's injury and pain;

[0052] like Figure 5-6 As shown, the blunt-tip curved needle type is suitable for use in areas with dense blood vessels and / or nerves to avoid damaging blood vessels or motor nerves;

[0053] like Figure 7-8 As shown in the figure, the side-hole curved needle type is suitable for treatments that require a larger range of thermal coagulation in the target area, to replace some pain treatments that originally required the double-needle mode;

[0054] Heat shrinkable insulation tubes are used instead of spray insulation to maintain production continuity and avoid damage to the RF sleeve during transportation or spraying;

[0055] like Fig. 9 As shown, when in use, it is connected to the radiofrequency ablation therapeutic device, and the needle tube 11 at the end of the insulating tube 12 is inserted into the position of the human body's muscle tissue and nerve nodes, and the needle tube 11 is located exactly in the position of the radiofrequency coagulation area; the radiofrequency ablation therapeutic device is used to conduct the radiation to the end of the needle tube 11 through the electrode wire, that is, high-temperature heat energy is generated at the electrode end, thereby eliminating damaged tissue.

[0056] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A combined multifunctional radiofrequency thermocoagulation electrode, characterized in that: The radio frequency 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 radio frequency 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 radio frequency probe (2).

2. A combined multifunctional radiofrequency thermocoagulation electrode according to claim 1, characterized in that: The radio frequency sleeve (1) and the radio frequency probe (2) are locked together via a sleeve seat (13) and a probe seat (23).

3. The combined multifunctional radiofrequency thermocoagulation electrode according to claim 1, characterized in that: 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 cone joint (131), and the locking inner cone joint (131) is locked and connected to the probe seat (23) with a locking outer cone joint (231); the side channel of the cannula seat (13) is provided with a locking inner cone joint (131) capable of connecting a syringe or a high-pressure extension tube, and the inner cone joint (131) is provided with a locking cap (14).

4. The combined multifunctional radiofrequency thermocoagulation electrode according to claim 1, characterized in that: The surface of the needle tube (11) is covered with an insulating tube (12), and an exposed end distance is provided between the needle tip of the needle tube (11) and the top end of the insulating tube (12).

5. 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.

6. The combined multifunctional radiofrequency thermocoagulation electrode according to claim 1, characterized in that: The front end (211) of the sheath tube (21) is engraved with mesh lines, spiral lines or regularly arranged pits for ultrasound guidance marking.

7. The combined multifunctional radiofrequency thermocoagulation electrode according to claim 1, characterized in that: 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 a locking outer circular joint (231) of the probe seat (23).

8. The combined multifunctional radiofrequency thermocoagulation electrode according to claim 1, characterized in that: 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 inside and outside 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 seat (23) by glue injection.

9. The combined multifunctional radiofrequency thermocoagulation electrode according to claim 1, characterized in that: The color-coded tube (24) is made of elastic material and is sleeved on the rear end of the electrode holder (23) and the front end of the connecting wire (25) to provide a reminder of the electrode working length and protect the connecting end of the wire.

10. 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) in one piece, and the connection between the wire (25) and the plug (251) adopts a conical honeycomb soft connection that can avoid damage to the connection between the wire and the plug.

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