Microwave catheter and microwave medical device

Abstract

The utility model particularly relates to a microwave catheter and a microwave medical device, and belongs to the technical field of microwave catheters. The microwave conduit comprises a conduit body, a radiation end connected to the conduit body and a conductive piece which penetrates through the conduit body and is electrically connected with the radiation end, the radiation end is connected with the conduit body through a connecting piece, and the connecting piece comprises a plugging part, an inserting part and a connecting cylinder. The plugging part is used for sealing an end opening of the pipe body, and the inserting part is arranged on the side, facing the pipe body, of the plugging part and inserted into the end opening of the pipe body. The connecting cylinder is arranged on the side, opposite to the pipe body, of the plugging part, the radiation end is partially contained in the connecting cylinder, and a heat insulation layer is arranged between the radiation end and the plugging part. The radiation end is connected to the pipe body through the connecting cylinder, so that the sealing performance of the pipe body and the connecting strength of the radiation end and the pipe body are improved. The heat insulation layer is contained in the connecting cylinder, so that the risk that the temperature of the pipe body is too high due to the fact that heat of the radiation end is transmitted to the pipe body is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of microwave catheters, and in particular relates to a microwave catheter and a microwave medical device. Background Art

[0002] Microwave catheter technology is a technology widely used in clinical treatment. Microwave catheters usually consist of a handle, a tube body and a radiation end arranged on the tube body. When in use, the radiation end is sent to the diseased part of the human body through the tube body. Under the action of the microwave electromagnetic field generated by the radiation end, the diseased tissue generates high temperature, thereby achieving the medical purpose.

[0003] The inventors found that when using microwave catheter treatment, a high temperature of up to 60-150 degrees Celsius will be generated near the radiation end in a short period of time. Since the radiation end is connected to the tube body, the heat will be transferred to the tube body. Although cooling medium is introduced into the traditional tube body to reduce the temperature, the cooling effect is limited. On the one hand, the risk of burns in non-lesion areas of the human body is increased, and on the other hand, the risk of damage to the tube body due to heat is increased. Utility Model Content

[0004] The utility model aims to provide a microwave catheter and a microwave medical device, wherein the microwave catheter can reduce the risk of the tube body being heated by the radiation end.

[0005] In order to achieve the above-mentioned purpose of the utility model, the technical solution adopted by the utility model is: on the one hand, the embodiment of the utility model provides a microwave duct, including a tube body, a radiation end connected to the tube body, and a conductive member penetrating the tube body and electrically connected to the radiation end, the radiation end is connected to the tube body through a connector, and the connector includes a plugging portion, an inserting portion, and a connecting tube. The plugging portion is used to close the port of the tube body, and the inserting portion is arranged on the side of the plugging portion facing the tube body and inserted into the port of the tube body. The connecting tube is arranged on the side of the plugging portion facing away from the tube body, the radiation end is partially accommodated in the connecting tube, and a heat insulation layer is arranged between the radiation end and the plugging portion.

[0006] In some embodiments, a circumferential wall surface of the insertion portion is provided with a protrusion, and an inner wall surface of the tube body is provided with a recessed portion adapted to the protrusion.

[0007] In some embodiments, the protrusion is in the shape of a frustum of a cone.

[0008] In some embodiments, the wall thickness of the connecting tube gradually decreases from a side close to the blocking portion to a side away from the blocking portion.

[0009] In some embodiments, the insertion portion is provided with a through hole, the through hole connects the tube body and the connecting tube, and the through hole is used for the conductive member to pass through.

[0010] In some embodiments, the inserting portion is provided with a sealing portion, and the sealing portion is provided around a port of the through hole.

[0011] In some embodiments, the material of the sealing portion includes rubber.

[0012] On the other hand, an embodiment of the present application further provides a microwave medical device, comprising the microwave catheter in the above embodiment.

[0013] In some embodiments, a cooling medium channel is provided in the tube body, and the microwave medical device also includes a handle, which is provided with a liquid inlet channel and a liquid outlet channel, the liquid inlet channel is connected to the inlet section of the cooling medium channel, and the liquid outlet channel is connected to the outlet end of the cooling medium channel.

[0014] In some embodiments, the handle portion is provided with a first switch portion, the first switch portion is used to open and close the liquid inlet channel, and the handle portion is provided with a second switch portion, the second switch portion is used to open and close the liquid outlet channel.

[0015] The utility model has the following beneficial effects: the connecting piece can block the pipe body through the insertion part and the blocking part, and can connect the radiation end to the pipe body through the connecting tube, thereby improving the sealing of the pipe body and the connection strength between the radiation end and the pipe body. In addition, the connecting tube contains a heat insulation layer, which reduces the risk of heat from the radiation end being transferred to the pipe body, causing the pipe body to have an overly high temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of the microwave conduit of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the microwave medical device of the present utility model;

[0018] Figure 3 for Figure 2 Enlarged view of point A.

[0019] Figure numbers: 1-tube body, 2-sealing part, 3-insertion part, 4-connecting tube, 5-radiation end, 6-thermal insulation layer, 7-conductive member, 8-sealing part, 9-cooling medium channel, 10-liquid inlet channel, 11-liquid outlet channel, 12-buffer chamber, 13-liquid adding channel, 14-first switch part, 15-second switch part. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Unless otherwise specified, the technical means used in the embodiments are conventional means well known to those skilled in the art.

[0021] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0022] It should also be noted that in the description of this application, unless otherwise clearly specified and limited, the terms "installed", "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 directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances. When a specific device is described as being located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device.

[0023] See also Figure 1 On the one hand, the embodiment of the utility model provides a microwave duct, including a tube body 1, a radiation end 5 connected to the tube body 1, and a conductive member 7 penetrating the tube body 1 and electrically connected to the radiation end 5, wherein the radiation end 5 is connected to the tube body 1 through a connector, and the connector includes a plugging portion 2, an inserting portion 3, and a connecting tube 4. The plugging portion 2 is used to seal the port of the tube body 1, and the inserting portion 3 is arranged on the side of the plugging portion 2 facing the tube body 1 and inserted into the port of the tube body 1. The connecting tube 4 is arranged on the side of the plugging portion 2 facing away from the tube body 1, and the radiation end 5 is partially accommodated in the connecting tube 4, and a heat insulation layer 6 is arranged between the radiation end 5 and the plugging portion 2.

[0024] The tube body 1 is a component for moving the radiation end 5 .

[0025] The specific structure of the radiation end 5 and the working principle of medical treatment are well known to those skilled in the art. The technical solution of the present application is not to improve the structure of the radiation end 5 to improve its medical effect, so they will not be repeated here.

[0026] The conduit member is a component used to supply energy to the radiation end 5 .

[0027] The sealing portion 2 seals the tube body 1 so that the end of the tube body 1 connected to the radiation end 5 is in a closed state, so that the cooling medium in the tube body 1 will not leak.

[0028] The sealing portion 2 and the end of the tube body 1 can be bonded.

[0029] The inserting portion 3 is inserted into the port of the tube body 1 , which, on the one hand, increases the connection strength between the connector and the tube body 1 , and on the other hand, improves the sealing effect on the tube body 1 .

[0030] The connecting tube 4 is used to install and fix the radiation end 5. The connecting tube 4 and the radiation end 5 can be interference fit so that the radiation end 5 can remain inserted in the connecting tube 4, or the inner wall of the connecting tube 4 and / or the outer wall of the radiation end 5 can be respectively provided with an adhesive layer to bond the radiation end 5 to the connecting tube 4.

[0031] The heat insulation layer 6 can isolate the heat, thereby reducing the risk of heat from the radiation end 5 being transferred to the tube body 1 and causing the temperature of the tube body 1 to be too high.

[0032] In the embodiment of the present application, the connecting piece can block the pipe body 1 through the insertion portion 3 and the blocking portion 2, and can connect the radiation end 5 to the pipe body 1 through the connecting tube 4, thereby improving the sealing of the pipe body 1 and the connection strength between the radiation end 5 and the pipe body 1. In addition, the connecting tube 4 contains a heat insulation layer 6, which reduces the risk of heat transfer from the radiation end 5 to the pipe body 1, causing the temperature of the pipe body 1 to be too high.

[0033] See also Figure 1 In some embodiments, a circumferential wall surface of the insertion portion 3 is provided with a protrusion, and an inner wall surface of the tube body 1 is provided with a recessed portion adapted to the protrusion.

[0034] When the inserting portion 3 is inserted into the end of the tube body 1 , the protruding portion is accommodated in the recessed portion.

[0035] The cooperation between the protruding portion and the recessed portion reduces the risk of the insertion portion 3 escaping from the tube body 1 and improves the blocking effect of the insertion portion 3 on the tube body 1 .

[0036] See also Figure 1 In some embodiments, the protrusion is in the shape of a frustum.

[0037] The small diameter side of the protrusion is arranged on the side of the large diameter side away from the end of the tube body 1 .

[0038] The protruding portion is in a frustum shape, which facilitates the insertion portion 3 to be inserted into the end of the tube body 1.

[0039] See also Figure 1 In some embodiments, the wall thickness of the connecting tube 4 gradually decreases from the side close to the blocking portion 2 to the side away from the blocking portion 2.

[0040] The wall thickness of the connecting tube 4 gradually decreases, so that the side of the connecting tube 4 close to the radiation end 5 can smoothly transition to the outer wall surface of the radiation end 5, reducing the risk of the connecting tube 4 causing scratches to the human body.

[0041] See also Figure 1In some embodiments, the insertion portion 3 is provided with a through hole, the through hole connects the tube body 1 and the connecting tube 4, and the through hole is used for the conductive member 7 to pass through.

[0042] Under the effect of the through hole, after the tube body 1 is closed by the connecting piece, the conductive piece 7 can be connected to the radiation end 5 to supply energy to the radiation end 5 .

[0043] See also Figure 1 In some embodiments, the inserting portion 3 is provided with a sealing portion 8, and the sealing portion 8 is provided around the port of the through hole.

[0044] The sealing portion 8 can seal the gap between the conductive member 7 and the inner wall of the through hole, thereby reducing the risk of the cooling medium in the tube body 1 leaking out of the tube body 1 .

[0045] The sealing part 8 is arranged around the port of the through hole to achieve sealing. Compared with the arrangement of the sealing part 8 in the through hole, the advantage is that the conductive member 7 can pass through the through hole without hindrance, reducing the risk of damage to the conductive member 7. If the sealing part 8 is arranged in the through hole, in order to make the sealing part 8 play a sealing role, the conductive member 7 and the sealing part 8 form an interference fit, and under the limiting effect of the inner wall of the through hole, the friction between the conductive member 7 and the sealing part 8 is relatively large. When the conductive member 7 passes through the through hole, it is necessary to use a large force to pull the conductive member 7, increasing the risk of the conductive member 7 breaking. In addition, it is not convenient to install and replace the sealing part 8 when the sealing part 8 is arranged in the through hole.

[0046] In some embodiments, the material of the sealing portion 8 includes rubber.

[0047] The rubber can produce elastic deformation, and the gap between the conductive member 7 and the through hole can be reliably sealed by the rubber.

[0048] In the embodiment of the present application, the sealing portion 8 is annularly arranged around the through-hole port. In the initial state, the radius of the side of the sealing portion 8 away from the through-hole port is smaller than the radius of the conductive part 7, so that an interference fit can be formed between the sealing portion 8 and the conductive part 7, thereby improving the sealing effect of the sealing portion 8.

[0049] See also Figure 2 On the other hand, an embodiment of the present application also provides a microwave medical device, including the microwave catheter in the above embodiment.

[0050] In some embodiments, a cooling medium channel 9 is provided in the tube body 1, and the microwave medical device also includes a handle, which is provided with a liquid inlet channel 10 and a liquid outlet channel 11, the liquid inlet channel 10 is connected to the inlet section of the cooling medium channel 9, and the liquid outlet channel 11 is connected to the outlet end of the cooling medium channel 9.

[0051] The cooling medium channel 9 is used to cool the tube body 1 .

[0052] The handle is used for medical personnel to hold it in hand.

[0053] The liquid inlet channel 10 is used to input the cooling medium into the cooling medium channel 9 , and the liquid outlet channel 11 is used to output the cooling medium discharged from the cooling medium channel 9 .

[0054] Under the action of the liquid inlet channel 10 and the liquid outlet channel 11, the cooling medium in the tube body 1 can circulate, thereby improving the cooling effect.

[0055] See also Figure 3 In some embodiments, the handle portion is provided with a first switch portion 14, and the first switch portion 14 is used to open and close the liquid inlet channel 10, and the handle portion is provided with a second switch portion 15, and the second switch portion 15 is used to open and close the liquid outlet channel 11.

[0056] The first switch portion 14 may include a first plate body, which is rotatably connected to the handle portion, and a torsion spring is arranged between the first plate body and the handle portion. When no cooling medium is input into the liquid inlet channel 10, the first plate body is covered on the outlet end of the liquid inlet channel 10 under the action of the torsion spring. When cooling medium is input into the liquid inlet channel 10, the cooling medium pushes the first plate body to rotate, so that the cooling medium in the liquid inlet channel 10 can enter the tube body 1.

[0057] Similarly, the second switch portion 15 may include a second plate body, which is rotatably connected to the handle portion, and a torsion spring is arranged between the second plate body and the handle portion. When no cooling medium is input into the liquid inlet channel 10, the second plate body is covered on the outlet end of the liquid outlet channel 11 under the action of the torsion spring. When cooling medium is input into the liquid inlet channel 10, the cooling medium in the tube body 1 is pushed to flow, and the cooling medium discharged from the tube body 1 further pushes the cooling medium in the liquid outlet channel 11 to flow, so that the second plate body rotates, so that the liquid outlet channel 11 can discharge the cooling medium.

[0058] Under the action of the first switch part 14 and the second switch part 15, when an external device that inputs cooling medium to the liquid inlet channel 10 fails, the first switch part 14 and the second switch part 15 can close the liquid inlet channel 10 and the liquid outlet channel 11 to ensure that the cooling medium is contained in the tube body 1 to play a cooling role, thereby reducing the risk of overheating of the tube body 1 due to the lack of cooling medium.

[0059] See also Figure 2 and Figure 3 In some embodiments, the handle portion may be provided with a buffer cavity 12 , the liquid inlet channel 10 and the cooling medium channel 9 of the tube body 1 are connected through the buffer cavity 12 , and the buffer cavity 12 is provided with a liquid adding channel 13 .

[0060] The liquid adding channel 13 is initially in a closed state. When an external device that inputs cooling medium into the liquid inlet channel 10 fails, the liquid inlet channel 10 is closed through the first switch unit 14. At this time, the cooling medium can continue to be input into the tube body 1 through the liquid adding channel 13, reducing the risk of overheating of the tube body 1.

[0061] The above embodiments are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations, modifications, and substitutions made by ordinary technicians in this field to the technical solutions of the present invention should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A microwave duct, comprising a tube body (1), a radiation end (5) connected to the tube body (1), and a conductive member (7) passing through the tube body (1) and electrically connected to the radiation end (5), characterized in that: The radiation end (5) is connected to the tube body (1) via a connecting piece, and the connecting piece comprises: A blocking portion (2) for closing a port of the tube body (1); An inserting portion (3) is arranged on a side of the blocking portion (2) facing the tube body (1) and is inserted into a port of the tube body (1); A connecting tube (4) is arranged on a side of the sealing portion (2) facing away from the tube body (1); the radiation end (5) is partially accommodated in the connecting tube (4); and a heat insulation layer (6) is arranged between the radiation end (5) and the sealing portion (2).

2. The microwave guide tube according to claim 1, characterized in that: The peripheral wall surface of the insertion portion (3) is provided with a protrusion, and the inner wall surface of the tube body (1) is provided with a recessed portion adapted to the protrusion.

3. The microwave guide tube according to claim 2, characterized in that: The protrusion is in a frustum shape.

4. The microwave guide tube according to claim 1, characterized in that: The wall thickness of the connecting tube (4) gradually decreases from a side close to the blocking portion (2) to a side away from the blocking portion (2).

5. The microwave guide tube according to claim 1, characterized in that: The insertion portion (3) is provided with a through hole, the through hole communicating with the tube body (1) and the connecting tube (4), and the through hole is used for allowing the conductive member (7) to pass through.

6. The microwave guide tube according to claim 5, characterized in that: The inserting portion (3) is provided with a sealing portion (8), and the sealing portion (8) is arranged around the port of the through hole.

7. The microwave guide tube according to claim 6, characterized in that: The material of the sealing portion (8) includes rubber.

8. A microwave medical device, characterized in that: Comprising the microwave guide tube according to any one of claims 1 to 7.

9. The microwave medical device according to claim 8, characterized in that: A cooling medium channel (9) is provided in the tube body (1), and the microwave medical device further comprises a handle, the handle being provided with a liquid inlet channel (10) and a liquid outlet channel (11), the liquid inlet channel (10) being in communication with an inlet section of the cooling medium channel (9), and the liquid outlet channel (11) being in communication with an outlet end of the cooling medium channel (9).

10. The microwave medical device according to claim 9, characterized in that: The handle portion is provided with a first switch portion (14), the first switch portion (14) being used to open and close the liquid inlet channel (10), and the handle portion is provided with a second switch portion (15), the second switch portion (15) being used to open and close the liquid outlet channel (11).

Images