Radio frequency ablation electrode device

Abstract

The invention discloses a radiofrequency ablation electrode device which comprises an ablation part and a conveying part, the ablation part comprises an electrode assembly and a handle connected with the electrode assembly, the near end of the handle is connected with a locking head, at least one pin sleeve head, a water inlet pipe sleeve head and a water outlet pipe sleeve head are arranged in the locking head, a plug is arranged at the far end of the conveying part, and the plug is connected with the electrode assembly. At least one pin connector, a water inlet pipe connector and a water outlet pipe connector are arranged in the plug, when the locking head and the plug are connected together in an inserted mode, the pin connector and the pin sleeve head are connected together, the water inlet pipe connector and the water inlet pipe sleeve head are connected together, and the water outlet pipe connector and the water outlet pipe sleeve head are connected together. Each pin connector is connected with a first cable in the conveying part, the water inlet pipe connector is connected with a first water inlet pipe in the conveying part, and the water outlet pipe connector is connected with a first water outlet pipe in the conveying part. According to the radiofrequency ablation electrode device, before and after a radiofrequency ablation operation, an operator can more conveniently and quickly connect and disassemble the ablation part and the conveying part of the radiofrequency ablation electrode device.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and more specifically, to a radio frequency ablation electrode device. Background Art

[0002] The treatment method of tumor radiofrequency ablation is to use imaging equipment for guidance, such as CT, ultrasound, etc., and then use one or more thin puncture needles to pierce the tumor and heat the tumor lesion. Since tumor cells have poor heat resistance compared to normal cells, tumor cells are killed, causing tumor tissue necrosis and absorption, achieving the effect of eliminating the tumor or reducing the tumor load. The main working principle of this technology is to use the electrode end of the radiofrequency ablation electrode needle to emit medium-to-high frequency radiofrequency waves to stimulate tissue cells to oscillate plasma. The ions collide with each other to generate heat, reaching a high temperature of 80-100°C, which can effectively and quickly kill local tumor cells. At the same time, it can coagulate the tissue around the tumor to form a reaction zone, so that it can no longer supply blood to the tumor and is conducive to preventing tumor metastasis.

[0003] The radiofrequency ablation device includes cables, water inlet pipes and outlet pipes. The cables, water inlet pipes and outlet pipes are generally soft tubes, which are very long. During radiofrequency ablation surgery, it is inconvenient for medical staff to operate the radiofrequency ablation electrode needle. At the same time, it is time-consuming and laborious to install and remove the radiofrequency ablation electrode device. Summary of the invention

[0004] The present invention provides a radiofrequency ablation electrode device, which includes an ablation portion and a delivery portion; The ablation part includes an electrode assembly and a handle connected to the electrode assembly; The proximal end of the handle is connected to a locking head; at least one pin sleeve, a water inlet pipe sleeve and a water outlet pipe sleeve are arranged in the locking head; A plug is arranged at the distal end of the delivery part, and at least one pin connector, a water inlet pipe connector and a water outlet pipe connector are arranged in the plug; When the locking head and the plug are plugged together, the pin needle connector is connected to the pin needle sleeve, the water inlet pipe connector is connected to the water inlet pipe sleeve, and the water outlet pipe connector is connected to the water outlet pipe sleeve; Each of the pin connectors is connected to a first cable in the conveying portion, the water inlet pipe connector is connected to a first water inlet pipe in the conveying portion, and the water outlet pipe connector is connected to a first water outlet pipe in the conveying portion; When performing an ablation operation, the cable is connected to the ablation host, and the water inlet pipe and the water outlet pipe are both connected to a water supply and outlet device.

[0005] The beneficial effects of the present invention are as follows: 1. For the ablation part of the radiofrequency ablation electrode device that is not connected to the cable, water inlet pipe and water outlet pipe on the handle, its structure is simple and the overall length is short, which is conducive to the operator to insert and locate the electrode needle to the lesion tissue of the human body more conveniently and accurately. 2. Before and after the radiofrequency ablation operation, the operator can connect and disassemble the ablation part and the conveying part of the radiofrequency ablation electrode device more conveniently and quickly. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 A schematic diagram of the overall structure of a radiofrequency ablation electrode device provided by an embodiment of the present invention; Figure 2 A schematic diagram of the split structure of a radiofrequency ablation electrode device provided in an embodiment of the present invention; Figure 3 for Figure 2 A schematic diagram of the structure of the middle ablation part from another perspective; Figure 4 A schematic diagram of a partial structure enlargement (locking head part and plug part) in a split structure of a radiofrequency ablation electrode device provided by an embodiment of the present invention; Figure 5 A schematic diagram of a partial structure enlargement (locking head part and plug part) in another split structure of a radiofrequency ablation electrode device provided by an embodiment of the present invention; Figure 6 A schematic diagram of the structure of a delivery portion in another radiofrequency ablation electrode device provided by an embodiment of the present invention; Figure 7 A schematic diagram of the overall structure of another radiofrequency ablation electrode device provided by an embodiment of the present invention; Figure 8 A schematic diagram of the split structure of another radiofrequency ablation electrode device provided in an embodiment of the present invention.

[0007] Reference numerals: 1, ablation part; 11, electrode assembly; 111, electrode needle; 12, handle; 13, locking head; 131, pin needle sleeve; 1311, first through hole; 1312, pin needle socket; 132. water inlet pipe sleeve; 1321. second through hole; 133. water outlet pipe sleeve; 1331. third through hole; 134. groove; 135. iron block; 14. conveying line; 141. second cable; 142. second water inlet pipe; 143. second water outlet pipe; 2. conveying part; 21. plug; 211. pin connector; 2111. first sealing ring; 212. water inlet pipe connector; 2121. second sealing ring; 213. water outlet pipe connector; 2131. third sealing ring; 214. protrusion; 215. first magnetic block; 216. second magnetic block; 217. first end face; 22. first cable; 23. first water inlet pipe; 24. first water outlet pipe. DETAILED DESCRIPTION

[0008] The technical solution of the present application will be described clearly and completely below in conjunction with the accompanying drawings. 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.

[0009] In the description of the present application, it should be noted that the terms "inside", "outside", "proximal end", "distal end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the proximal end refers to the end away from the lesion tissue area, that is, the end close to the operator; the distal end refers to the end close to the lesion tissue area, that is, the end away from the operator.

[0010] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "disposed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0011] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0012] The present application is further described in detail below in conjunction with the accompanying drawings.

[0013] According to an embodiment of the present application, a radiofrequency ablation electrode device is provided, such as Figure 1-Figure 3As shown, it includes: an ablation part and a delivery part. The ablation part includes an electrode assembly and a handle connected to the electrode assembly. A locking head is connected to the other end of the handle, i.e., the proximal end. In this embodiment, the locking head is directly fixed on the handle. A pin needle sleeve, a water inlet pipe sleeve, and a water outlet pipe sleeve are arranged in the locking head. The locking head is a hard cylinder. The cylinder mentioned in this application can be a standard cylinder or a cylinder formed by splicing two or more cylinders together. The diameters of each cylinder can be the same or different. Therefore, the cylinder mentioned in this application should be understood in a broad sense. The pin needle sleeve is a first through hole arranged in the locking head and extending along the axial direction of the electrode assembly, and a pin needle socket is arranged in the first through hole. The water inlet pipe sleeve is a second through hole arranged in the locking head and extending along the axial direction of the electrode assembly. The water outlet pipe sleeve is a third through hole arranged in the locking head and extending along the axial direction of the electrode assembly. A plug is provided at the distal end of the conveying part. The plug is a hard cylinder. The cylinder mentioned here can be a standard cylinder or a cylinder formed by splicing two or more cylinders together. The diameters of the cylinders can be the same or different. A pin needle connector, a water inlet pipe connector and a water outlet pipe connector are provided in the plug. When the locking head and the plug are plugged together, the pin needle connector is connected to the pin needle sleeve, the water inlet pipe connector is connected to the water inlet pipe sleeve, and the water outlet pipe connector is connected to the water outlet pipe sleeve. The pin needle connector is connected to a first cable inside the conveying part, the water inlet pipe connector is connected to a first water inlet pipe inside the conveying part, and the water outlet pipe connector is connected to a first water outlet pipe inside the conveying part. When performing an ablation operation, the cable is connected to the ablation host (not shown in the figure), and the water inlet pipe and the water outlet pipe are both connected to a water supply and outlet device (not shown in the figure).

[0014] like Figure 3 , Figure 4 As shown, in this embodiment, a groove is further provided on the outer side of the locking head, and an iron block is provided in the groove. A protrusion is provided on the inner side of the plug, and a first magnetic block is provided in the protrusion. The protrusion is embedded in the groove. Through the magnetic attraction of the first magnetic block and the iron block, the locking head and the plug can be conveniently fixed together. Through the setting of the groove on the locking head and the protrusion on the plug, the operator can easily align the locking head and the plug when plugging them together, and can avoid the pin being damaged due to improper alignment of the locking head and the plug.

[0015] In some optional embodiments, the locking head and the plug can also be set to other shapes, such as the shape of a rectangular parallelepiped or a cylinder after being flattened. The shapes of the pin needle sleeve, the water inlet pipe sleeve and the water outlet pipe sleeve in the locking head can also be set to other shapes, and the arrangement of the three can also be changed according to actual needs, preferably the arrangement that saves the most space, which is conducive to making the locking head thinner. Similarly, the shapes of the pin needle connector, the water inlet pipe connector and the water outlet pipe connector set in the plug can also be set to other shapes, and the arrangement of the three can also be changed according to actual needs, preferably the arrangement that saves the most space, which is conducive to making the plug thinner. In addition, a protrusion can also be set on the outer side of the locking head, a first magnetic block can be set in the protrusion, a groove can be set on the inner side of the plug, and an iron block can be set in the groove, and the protrusion is embedded in the groove. The setting positions of the first magnetic block and the iron block can also be exchanged. This application is not specifically limited.

[0016] In some optional embodiments, two or more pin pin sleeves may be provided in the locking head, and correspondingly, the same number of pin pin connectors as the pin pin sleeves may be provided in the plug, and each pin pin connector is connected to a first cable inside the conveying portion. This application does not make specific limitations.

[0017] In another embodiment, Figure 5 As shown, this embodiment is Figure 4 The main difference of the ablation electrode device of the embodiment shown is that the material of the locking head is iron, so there is no iron block in the groove on the locking head. A protrusion is provided on the inner side of the plug, and a second magnetic block is provided in the protrusion. When the plug and the locking head are plugged together, the protrusion on the plug is embedded in the groove on the locking head, and the locking head and the plug can be easily fixed together through the magnetic attraction of the second magnetic block and the iron locking head. Figure 4 The same parts as those in the illustrated embodiments will not be described in detail.

[0018] When the radiofrequency ablation electrode device is not in use, the ablation part and the delivery part are separated and not connected together. Before preparing for the radiofrequency ablation operation, the operator first inserts and positions the electrode needle on the electrode assembly of the ablation part into the diseased tissue of the human body. Because the handle of the ablation part of the embodiment of the present application is not connected to the cable, water inlet pipe and water outlet pipe, its structure is simple and the overall length is short, which is convenient for the operator to operate the ablation part and can more conveniently and accurately insert and position the electrode needle into the diseased tissue of the human body. After positioning, the operator only needs to insert the locking head of the ablation part into the plug of the delivery part, and then the pin needle connector can be connected to the pin needle sleeve, the water inlet pipe connector can be connected to the water inlet pipe sleeve, and the water outlet pipe connector can be connected to the water outlet pipe sleeve, and then the radiofrequency ablation operation can be started. One person can easily and quickly complete the connection between the ablation unit and the delivery unit. Because the overall length of the ablation unit is relatively short, the operator can hold the ablation unit with his hand while performing the connection operation, which is not easy to involve the electrode needle, so that the electrode needle can be more stably positioned at the target position. After the radiofrequency ablation operation, the operator can also easily and quickly remove the delivery unit from the ablation unit.

[0019] In another embodiment, Figure 6 As shown, this embodiment is Figure 1-Figure 5 The main difference between the illustrated embodiments is that a first sealing ring is sleeved on the outer surface of the pin needle connector, a second sealing ring is sleeved on the outer surface of the water inlet pipe connector, and a third sealing ring is sleeved on the outer surface of the water outlet pipe connector. The second sealing ring and the third sealing ring are used to prevent the liquid in the water inlet pipe and the water outlet pipe from flowing out, and the third sealing ring prevents the liquid from flowing into the pin needle connector and the pin sleeve to cause a short circuit. In some optional implementations, only a second sealing ring may be sleeved on the outer surface of the water inlet pipe connector, a third sealing ring may be sleeved on the outer surface of the water outlet pipe connector, and no sealing ring may be sleeved on the outer surface of the pin needle connector.

[0020] In another embodiment, Figure 7 , Figure 8 As shown, this embodiment is Figure 1The main difference of the illustrated embodiment is that the locking head is connected to the proximal end of the handle through a section of transmission line, that is, a section of transmission line is connected between the locking head and the handle. The transmission line includes a second cable, a second water inlet pipe and a second water outlet pipe. The second cable is connected to the pin needle sleeve, and the two are electrically connected; the second water inlet pipe is connected to the water inlet pipe sleeve, and the two are connected; the second water outlet pipe is connected to the water outlet pipe sleeve, and the two are connected. The second cable, the second water inlet pipe and the second water outlet pipe are all hoses, which can facilitate the locking head to bend to one side during radiofrequency ablation surgery to avoid touching the imaging equipment used in conjunction with the surgery. In this embodiment, the second cable, the second water inlet pipe and the second water outlet pipe are fixed together, which can facilitate the quick installation of the transmission line to the handle and the locking head when assembling the ablation part. This embodiment is different from the illustrated embodiment. Figure 1 The same parts of the illustrated embodiments are not repeated here. A section of transmission line is connected between the locking head and the handle, and the length of the transmission line is preferably 3-5 cm. Because the transmission line is a hose, the locking head connected thereto can be bent to various directions, and then when the plug is plugged into the locking head, it is not restricted by direction. The operator can bend the locking head to a direction that is convenient for the plug-in operation and then plug the plug into the locking head. Because the length of the transmission line is relatively short, it will not affect the operator's insertion and positioning of the electrode needle into the lesion tissue of the human body. It should be noted that in other embodiments, the second cable, the second water inlet pipe and the second water outlet pipe can also be separated, or the second water inlet pipe and the second water outlet pipe are fixed together, and the second cable is separated from the second water inlet pipe and the second water outlet pipe, and this application does not make specific limitations.

[0021] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A radiofrequency ablation electrode device, characterized in that: comprising an ablation portion and a delivery portion; The ablation part includes an electrode assembly and a handle connected to the electrode assembly; The proximal end of the handle is connected to a locking head; at least one pin sleeve, a water inlet pipe sleeve and a water outlet pipe sleeve are arranged in the locking head; A plug is arranged at the distal end of the delivery part, and at least one pin connector, a water inlet pipe connector and a water outlet pipe connector are arranged in the plug; When the locking head and the plug are plugged together, the pin needle connector is connected to the pin needle sleeve, the water inlet pipe connector is connected to the water inlet pipe sleeve, and the water outlet pipe connector is connected to the water outlet pipe sleeve; Each of the pin connectors is connected to a first cable in the conveying portion, the water inlet pipe connector is connected to a first water inlet pipe in the conveying portion, and the water outlet pipe connector is connected to a first water outlet pipe in the conveying portion; When performing an ablation operation, the cable is connected to the ablation host, and the water inlet pipe and the water outlet pipe are connected to a water supply and outlet device.

2. The radiofrequency ablation electrode device according to claim 1, characterized in that: A groove is arranged on the outer side surface of the locking head, and an iron block is arranged in the groove; A protrusion is arranged on the inner side surface of the plug, and a first magnetic block is arranged inside the protrusion; The protrusion is embedded in the groove.

3. The radiofrequency ablation electrode device according to claim 1, characterized in that: A groove is arranged on the outer side surface of the locking head, and the material of the locking head is iron; A protrusion is arranged on the inner side surface of the plug, a second magnetic block is arranged inside the protrusion, and the protrusion is embedded in the groove.

4. The radiofrequency ablation electrode device according to claim 1, characterized in that: The locking head is a hard cylinder, the pin needle sleeve is a first through hole arranged in the locking head and extending along the axial direction of the electrode assembly, and a pin needle socket is arranged in the first through hole, the water inlet pipe sleeve is a second through hole arranged in the locking head and extending along the axial direction of the electrode assembly, and the water outlet pipe sleeve is a third through hole arranged in the locking head and extending along the axial direction of the electrode assembly; The plug is a hard hollow cylinder, and the pin connector is arranged in the cavity of the plug and fixed on the first end surface of the proximal end of the plug; The water inlet pipe joint is a hard hollow tube body, and the water inlet pipe joint is arranged in the cavity of the plug and fixed on the first end surface of the proximal end of the plug; The water outlet pipe joint is a hard hollow pipe body, and the water outlet pipe joint is arranged in the cavity of the plug and fixed on the first end surface of the proximal end of the plug.

5. The radiofrequency ablation electrode device according to claim 1, characterized in that: A first sealing ring is sleeved on the outer surface of the pin connector. A second sealing ring is sleeved on the outer side of the water inlet pipe joint; A third sealing ring is sleeved on the outer side of the water outlet pipe joint.

6. The radiofrequency ablation electrode device according to any one of claims 1 to 5, characterized in that: The locking head is directly fixed to the handle.

7. The radiofrequency ablation electrode device according to any one of claims 1 to 5, characterized in that: The locking head is connected to the handle via a section of conveying line.

8. The radiofrequency ablation electrode device according to claim 7, characterized in that: The transmission line includes a second cable, a second water inlet pipe and a second water outlet pipe; The second cable is connected to the pin needle sleeve, the second water inlet pipe is connected to the water inlet pipe sleeve, and the second water outlet pipe is connected to the water outlet pipe sleeve.

9. The radiofrequency ablation electrode device according to claim 8, characterized in that: The second cable, the second water inlet pipe and the second water outlet pipe are fixed together.

10. The radiofrequency ablation electrode device according to claim 8, characterized in that: The length of the conveying line is 3-5 cm.

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