CN216823638U

CN216823638U - Microwave ablation catheter

Info

Publication number: CN216823638U
Application number: CN202123187886.XU
Authority: CN
Inventors: 赵德兵
Original assignee: Nanjing Devon Medical Technology Co ltd
Current assignee: Nanjing Devon Medical Technology Co ltd
Priority date: 2021-12-16
Filing date: 2021-12-16
Publication date: 2022-06-28
Anticipated expiration: 2031-12-16

Abstract

The utility model relates to the technical field of medical equipment, concretely relates to microwave ablation catheter. The specific technical scheme is as follows: the utility model provides a microwave ablation catheter, includes syringe needle, the needle tubing be connected with the syringe needle and set up in the needle tubing and with the cable that the syringe needle is connected, the one end of syringe needle is provided with insulating cover, the other end of insulating cover is provided with the reinforcing tube, the other end of reinforcing tube is connected the needle tubing, the other end of needle tubing inserts and sets up in the handle seat, the other end of handle seat is connected with the handle body, the other end port department of handle body is provided with the handle cap, the other end of cable is located the handle body and is connected with the joint. The utility model provides an among the prior art melt the pipe and be heated and melt the problem that leads to the cooling water to leak after.

Description

Microwave ablation catheter

Technical Field

The utility model relates to the technical field of medical equipment, concretely relates to microwave ablation catheter.

Background

Microwave ablation is widely applied to clinical ablation treatment of tumors, and along with the gradual development and improvement of new technology and new method for treating tumors by microwave ablation, the microwave catheter technology is gradually popularized in clinical treatment. The microwave ablation catheter can treat tumor lesions in and near trachea of lung of human body. Due to the high core temperature of the microwave applicator when irradiating microwave energy for ablation, the core temperature of the ablation region of the microwave applicator generally exceeds 150 ℃, which makes the medical catheter outside the applicator required to withstand high temperatures above 150 ℃. However, the medical polymer flexible tube commonly used in the practical engineering practice cannot withstand such a high temperature exceeding the melting point, for example, the tube made of PU (polyurethane), PVC (polyvinyl chloride), pebax (polyether block polyamide) and other materials becomes soft at 70-80 ℃, and gradually melts as the temperature continues to rise. After the tube body outside the microwave radiator is melted, the cooling water inside the tube body can be leaked. The melting of the tube body and the leakage of cooling water in the ablation operation are extremely dangerous, which can bring fatal harm to patients.

Disclosure of Invention

The utility model provides a microwave ablation catheter, which solves the problem that the ablation catheter in the prior art is heated to melt and then leads to the leakage of cooling water.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes:

the utility model discloses a microwave ablation catheter, including syringe needle, the needle tubing be connected with the syringe needle and the cable of setting in the needle tubing and being connected with the syringe needle, the one end of syringe needle is provided with insulating cover, insulating cover's the other end is provided with the reinforcing tube, the other end of reinforcing tube is connected the needle tubing, the other end of needle tubing inserts and sets up in the handle seat, the other end of handle seat is connected with the handle body, the other end port department of handle body is provided with the handle cap, the other end of cable is located the handle body and is connected with the joint.

Preferably, the sinle silk and the syringe needle fixed connection of cable, the one end of reinforced pipe is inserted and is set up in the syringe needle, be provided with water shutoff ring in the syringe needle, the one end butt of water shutoff ring stretches into the one end in the syringe needle at the reinforced pipe, the cable passes water shutoff ring and with water shutoff ring fixed connection.

Preferably, the side that the needle tube, be located the cable is provided with cooling module, cooling module is including setting up the water pipe in the needle tube, the other end of water pipe stretches into in the handle body and communicates there is the inlet tube, is located in the handle seat the cover is equipped with out the water jacket on the cable, go out the one end of water jacket and the needle tube one end intercommunication that stretches into in the handle seat, the other end seals, one side intercommunication that goes out the water jacket has the outlet pipe.

Preferably, the needle tube is connected with the water outlet sleeve through a transition tube, one end of the transition tube extends into the needle tube, and the other end of the transition tube extends into the water outlet sleeve and is fixed.

Preferably, the water outlet sleeve is connected with the water inlet pipe through a connecting pipe, one end of the connecting pipe extends into the water outlet sleeve and is fixed with the cable, and the other end of the connecting pipe extends into the water inlet pipe and is fixed.

Preferably, one side of the water outlet pipe is communicated with a bent water nozzle, and the bent water nozzle is connected with the water outlet pipe.

Preferably, a sleeve penetrates through the handle cap, the joint is fixed in the sleeve, a fixed block is fixed at one end of the sleeve, which is located in the handle body, and the cable penetrates through the fixed block and is fixed with the fixed block.

Preferably, the water inlet pipe and the water outlet pipe are respectively provided with a water joint.

The utility model discloses possess following beneficial effect:

the utility model discloses a set up the water pipe in the needle tubing and connect the inlet tube, simultaneously, the water jacket is established to the cover on the cable, goes out water jacket and needle tubing in-connection to go out outlet pipe of intercommunication on the water jacket, when cooling down the cable, the water pipe is intake to the needle tubing in, and in the water reentrant water jacket of needle tubing, and flow through the outlet pipe, under the state that lasts the influent and go out water, realize circulating cooling to the cable. The needle tubing can be high temperature resistant for the tetrafluoro pipe, can not lead to the water leakage because of high temperature melts, and simultaneously, the water pipe is stainless steel, can be better carry out the heat exchange.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of a portion A of FIG. 1;

FIG. 3 is a view taken along line A-A of FIG. 1;

FIG. 4 is a view taken along line A of FIG. 1;

FIG. 5 is a schematic view of the internal structure of the handle seat and the handle body;

in the figure: the water-saving syringe comprises a needle 1, a needle tube 2, a cable 3, an insulating sleeve 4, a reinforcing tube 5, a handle seat 6, a handle body 7, a handle cap 8, a connector 9, a water blocking ring 10, a water tube 11, a water inlet tube 12, a water outlet sleeve 13, a water outlet tube 14, a transition tube 15, a connecting tube 16, a bent water nozzle 17, a sleeve 18, a fixing block 19 and a water connector 20.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Unless otherwise indicated, the technical means used in the examples are conventional means well known to those skilled in the art.

Referring to fig. 1-5, the utility model discloses a microwave ablation catheter, including syringe needle 1, the needle tubing 2 be connected with syringe needle 1 and the cable 3 of setting in needle tubing 2 and being connected with syringe needle 1, the one end of syringe needle 1 is provided with insulating cover 4, the other end of insulating cover 4 is provided with reinforced pipe 5, needle tubing 2 is connected to the other end of reinforced pipe 5, the other end of needle tubing 2 inserts the setting in handle seat 6, the other end of handle seat 6 is connected with handle body 7, the other end port department of handle body 7 is provided with handle cap 8, the other end of cable 3 is located handle body 7 and is connected with and connects 9. The sinle silk and the syringe needle 1 fixed connection of cable 3, the one end of reinforcing tube 5 is inserted and is set up in needle tubing 2, is provided with water shutoff ring 10 in the needle tubing 2, and the one end butt of water shutoff ring 10 stretches into the one end in needle tubing 2 at reinforcing tube 5, and cable 3 passes water shutoff ring 10 and with water shutoff ring 10 fixed connection. Specifically, the method comprises the following steps: one end of a needle head 1 is inserted into an insulating sleeve 4 and fixed, the other end of the insulating sleeve 4 is inserted into a reinforcing pipe 5 and fixed, the other end of the reinforcing pipe 5 is inserted into a needle tube 2 and fixed, a water plugging ring 10 is arranged in the needle tube 2, one end of the water plugging ring abuts against one end of the reinforcing pipe 5, and the other end of the water plugging ring is bonded and fixed with the side wall of a cable 3; and the wire core of the cable 3 is welded and fixed with the joint 9.

Further, the side that is located cable 3 in needle tubing 2 is provided with cooling module, and cooling module is including setting up water pipe 11 in needle tubing 2, and water pipe 11 is provided with two, increases inflow and the inflow speed to needle tubing 2, and of course, quantity can set up according to actual conditions, and the position that sets up of water pipe 11 in needle tubing 2 places as required can. One end of each of the two water pipes 11 is separated from the water blocking ring 10, the other end of each of the two water pipes 11 extends into the handle body 7 and is communicated with a water inlet pipe 12, namely the water inlet pipe 12 is communicated with the water pipe 11, the water pipe 11 is a capillary stainless steel pipe, and the needle tube 2 is a tetrafluoride pipe. A water outlet sleeve 13 is sleeved on the cable 3 and positioned in the handle seat 6, one end of the water outlet sleeve 13 is communicated with one end of the needle tube 2 extending into the handle seat 6, the other end of the water outlet sleeve 13 is sealed, and one side of the water outlet sleeve 13 is communicated with a water outlet pipe 14.

Specifically, the method comprises the following steps: the needle tube 2 is connected with the water outlet sleeve 13 through a transition tube 15, one end of the transition tube 15 extends into the needle tube 2 for fixation, and the other end extends into the water jacket 13 for fixation, and is welded and fixed with the water outlet sleeve 13. The water outlet sleeve 13 is connected with the water inlet pipe 12 through a connecting pipe 16, one end of the connecting pipe 16 extends into the water sleeve 13 and is fixedly bonded with the cable 3, the connecting pipe 16 is fixedly welded with the water outlet sleeve 13, and the other end of the connecting pipe 16 extends into the water inlet pipe 12 and is fixed.

Furthermore, one side of the water outlet pipe 14 is communicated with a bent water nozzle 17, and the bent water nozzle 17 is connected with the water outlet pipe 14. Water connectors 20 are respectively arranged on the water inlet pipe 12 and the water outlet pipe 14. An inlet and outlet hole for the water inlet pipe 12 and the water outlet pipe 14 to pass through is arranged on the side wall of the handle body 7.

Further, a sleeve 18 penetrates through the handle cap 8, the joint 9 is fixed in the sleeve 18, a fixing block 19 is fixed at one end, located in the handle body 7, of the sleeve 18, and the cable 3 penetrates through the fixing block 19 and is fixed with the fixing block 19. The fixed block 19 is fixed with the sleeve 18 by welding and is bonded and fixed with the cable 3; meanwhile, the wire core of the cable 3 is welded and fixed with the joint 9, and the joint 9 is used for an external power supply. It should be noted that: the utility model discloses the equipment welding of well each part should weld firmly, must not rosin joint, and the bonding is fixed should also firmly reliable. The utility model discloses a microwave ablation catheter is disposable product.

When the cooling assembly of the utility model is used, water is fed through the water inlet pipe 12, and the cooling water enters the two water pipes 11 and then enters the needle tube 2 to directly reach the position of the water plugging ring 10, thereby cooling the cable; because the needle tube 2, the transition pipe 15 and the water outlet sleeve 13 are in a communicated state, water in the needle tube 2 enters the water outlet sleeve 13, flows out of the water outlet pipe 14 through the bent water pipe 17, and continuously enters and exits water, so that a circulating state is achieved, and the cable is continuously cooled.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description of the present invention, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

The above-mentioned embodiments are only described in the preferred embodiments of the present invention, but not limited to the scope of the present invention, and various modifications and improvements made by the technical solutions of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.

Claims

1. The utility model provides a microwave ablation catheter, includes syringe needle (1), needle tubing (2) be connected with syringe needle (1) and sets up in needle tubing (2) and cable (3) be connected with syringe needle (1), its characterized in that: the one end of syringe needle (1) is provided with insulating cover (4), the other end of insulating cover (4) is provided with reinforcing tube (5), the other end of reinforcing tube (5) is connected needle tubing (2), the other end of needle tubing (2) inserts and sets up in handle seat (6), the other end of handle seat (6) is connected with handle body (7), the other end port department of handle body (7) is provided with handle cap (8), the other end of cable (3) is located handle body (7) and is connected with joint (9).

2. A microwave ablation catheter according to claim 1, wherein: the cable core and syringe needle (1) fixed connection of cable (3), the one end of reinforcing tube (5) is inserted and is set up in needle tubing (2), be provided with water shutoff ring (10) in needle tubing (2), the one end butt of water shutoff ring (10) stretches into the one end in needle tubing (2) at reinforcing tube (5), cable (3) pass water shutoff ring (10) and with water shutoff ring (10) fixed connection.

3. A microwave ablation catheter according to claim 1, wherein: the side that in needle tubing (2), be located cable (3) is provided with cooling module, cooling module is including setting up water pipe (11) in needle tubing (2), the other end of water pipe (11) stretches into in handle body (7) and the intercommunication has inlet tube (12), is located in handle seat (6) the cover is equipped with out water jacket (13) on cable (3), the one end that goes out water jacket (13) stretches into one end intercommunication in handle seat (6) with needle tubing (2), and the other end seals, one side intercommunication that goes out water jacket (13) has outlet pipe (14).

4. A microwave ablation catheter according to claim 3, wherein: the needle tube (2) is connected with the water outlet sleeve (13) through a transition tube (15), one end of the transition tube (15) extends into the needle tube (2), and the other end of the transition tube extends out of the water sleeve (13) and is fixed.

5. A microwave ablation catheter according to claim 3, wherein: go out and be connected through connecting pipe (16) between water jacket (13) and inlet tube (12), the one end of connecting pipe (16) is stretched into in water jacket (13) and is fixed with cable (3), the other end of connecting pipe (16) is stretched into in inlet tube (12) and is fixed.

6. A microwave ablation catheter according to claim 3, wherein: one side of the water outlet pipe (14) is communicated with a water bending nozzle (17), and the water bending nozzle (17) is connected with the water outlet pipe (14).

7. A microwave ablation catheter according to claim 1, wherein: a sleeve (18) penetrates through the handle cap (8), the joint (9) is fixed in the sleeve (18), a fixing block (19) is fixed at one end, located in the handle body (7), of the sleeve (18), and the cable (3) penetrates through the fixing block (19) and is fixed with the fixing block (19).

8. A microwave ablation catheter according to claim 3, wherein: and the water inlet pipe (12) and the water outlet pipe (14) are respectively provided with a water joint (20).