A cold circulation adjustable ablation needle

Abstract

The utility model discloses a cold circulation adjustable ablation needle, comprising an ablation handle and an ablation needle, the ablation needle comprising an ablation needle body and an insulating film, the ablation needle passes through the front end of the ablation handle, and a main pushing component and a secondary pushing component are provided on the ablation handle, the main pushing component mainly controls the length of the ablation needle, and the secondary pushing component mainly controls and adjusts the length of the ablation needle body exposed by the insulating film; the setting of the adjustment part and the water circulation part of the application greatly shortens the length of the ablation handle, is suitable for ablation under the influence of a small door hole, organizes and manages scattered cables and water pipes, and improves the operating experience; the ablation handle is provided with a main push button and a secondary push button, the main push button mainly controls the length of the ablation needle (the ablation needle body and the entire insulating film), and the secondary push button mainly controls and adjusts the length of the needle tip exposed by the insulating film, and is suitable for adjustment at different positions and ablation areas under a small door hole.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a cold circulation adjustable ablation needle. Background Art

[0002] Ablation surgery guided by CT and MRI is of great significance in modern medicine. However, there are some challenges, one of which is that the diameter of the portal is usually small, while the needle shaft of the traditional ablation needle is relatively long, resulting in interference between the ablation needle and the portal. Another challenge is that when the lesion is located deep in the human body, the traditional short ablation needle cannot reach the target location. These problems have led to difficulties for doctors in selecting appropriate ablation needles, and ablation needles of multiple specifications and models may be required, increasing the cost and complexity of medical equipment.

[0003] At present, there are many types of cold circulation ablation needles on the market, and the internal cold circulation devices of cold circulation ablation needles are different:

[0004] CN206303970U Anjun Medical Technology Co., Ltd. has designed and developed a shunt circulation sealing device for a cold circulation ablation needle, which includes a needle rod fixing seat, a water pipe fixing seat, a water outlet pipe and a water inlet pipe. The water pipe fixing seat is respectively connected with a water outlet pipe and a water inlet pipe. The water inlet pipe is connected to the inside of the capillary of the cold circulation ablation needle, and the water outlet pipe is connected to the gap between the outer wall of the capillary and the inner wall of the needle rod. The utility model of the shunt circulation sealing device for the cold circulation ablation needle obtains the highest energy deposition in the ablation area, effectively reduces the impedance increase of the surrounding tissue, and avoids carbonization;

[0005] CN218773934U Nanjing Ruibo Medical Technology discloses an integrated circulating water tank and an ablation antenna with an integrated circulating water tank. The integrated circulating water tank includes: a water tank upper cover and a water tank lower cover, which are provided with a water tank front chamber and a water tank rear chamber, an inlet pipe mounting hole, a water outlet pipe mounting hole and a coaxial cable connector mounting hole. After the upper and lower covers of the water tank are buckled together, a needle rod guide groove and a water injection capillary guide groove are left. The needle rod assembly runs through the circulating water tank. A circulating water path is formed from the water inlet pipe joint through the water tank rear chamber, the gap between the inner wall of the water injection capillary and the outer wall of the coaxial cable, the front end of the needle rod, and then returns at the sealing ring, and then passes through the gap between the inner wall of the needle rod and the outer wall of the water injection capillary, the water tank front chamber, and the water outlet pipe joint. The circulating water tank adopts an integrated polymer material, which has a simple structure, light weight, good sealing, simple production operation, and low production cost;

[0006] CN219000547U mainly includes an internal circulation structure; the internal circulation structure can make the cold medium in the liquid supply device reach the working end of the radiofrequency ablation electrode to cool the working end of the radiofrequency ablation electrode and the surrounding lesion tissue, and can make the cold medium flow back to the liquid supply device. The utility model can increase the conductivity of the lesion tissue around the working end, reduce the working impedance, and can also expand the cooling range to avoid carbonization of the lesion tissue, thereby expanding the ablation range;

[0007] The internal circulation structure of cold circulation ablation needles on the market still generally has unreasonable designs, resulting in the handle being too long and the scattered water pipes affecting the doctor's subsequent operation process. Utility Model Content

[0008] The purpose of the utility model is to provide a cold circulation adjustable ablation needle to overcome the above-mentioned defects in the prior art.

[0009] According to the utility model, a cold cycle adjustable ablation needle comprises an ablation handle and an ablation needle, wherein the ablation needle comprises an ablation needle body and an insulating film, wherein the ablation needle passes through the front end of the ablation handle, and a main pushing component and a secondary pushing component are arranged on the ablation handle, wherein the main pushing component mainly controls the length of the ablation needle, and the secondary pushing component mainly controls and adjusts the length of the ablation needle body exposed by the insulating film;

[0010] The ablation handle consists of an adjustment part and a water circulation part, a connecting piece is provided between the adjustment part and the water circulation part, and a thermocouple outlet, a water inlet outlet, a water outlet outlet and a wire outlet are penetrated through the connecting piece.

[0011] Preferably, the adjustment part includes a first shell and a front cover, the first shell and the front cover are sealed and fixedly connected, the first shell is also provided with at least one scale groove, the scale grooves are axially evenly spaced along the front side of the first shell, the scale grooves are connected end to end, and the main pushing assembly is clamped on the first shell.

[0012] Preferably, the main pushing component includes a key push button and a key support portion, the key push button is fixed to the key support portion, and a protrusion is provided on the key push button to be engaged in one of the scale grooves; the ablation needle passes through the key support portion.

[0013] Preferably, the button support portion is further provided with a hollow portion, a slot portion is provided in the hollow portion, and the auxiliary pushing component can be snap-connected to the slot portion.

[0014] Preferably, the push button is elastic.

[0015] Preferably, the sub-push assembly includes a first sub-push assembly and a second sub-push assembly, and the first sub-push assembly and the second sub-push assembly are respectively clamped in the slide grooves symmetrically arranged on the left and right sides of the first shell, and the first sub-push assembly includes a fixing part, a first clamping part and a first sub-button, the ablation needle body passes through the fixing part and is sealed and fixedly connected to the rear end of the button support part, and the insulating film is fixed in the fixing part; one end of the fixing part is fixedly connected to the first clamping part, and the other end is fixedly connected to the first sub-button; the second sub-push assembly includes a second sub-button, a second clamping part and a spring installed therebetween, the second clamping part is clamped with the clamping slot part, and the first clamping part and the second clamping part are slidably clamped.

[0016] Preferably, the ablation handle also includes an inner tube, the connecting piece is sealingly connected to the rear end of the button support portion, a water circulation cavity is formed between the connecting piece and the button support portion, the inner tube is coaxially arranged in the ablation needle body, the inner tube passes through the connecting piece and is fixed thereto, the inner tube is connected to the water inlet pipe outlet, the water inlet pipe outlet is connected to the water inlet pipe a, the water circulation cavity is connected to the ablation needle, and the water outlet is connected to the water circulation cavity.

[0017] Preferably, the water circulation part includes a second shell, a back cover and a drainage pipe fixing piece, the second shell is sealed and fixedly connected to the back cover, the back cover is respectively provided with openings corresponding to the thermocouple lead-out port, the water inlet pipe lead-out port, the water outlet pipe lead-out port and the wire lead-out port to cooperate with the connecting piece to lead out corresponding water pipes and cables; the drainage pipe fixing piece is sealed and fixedly connected to the back cover and the second shell, and the drainage pipe fixing piece is provided with a drainage pipe.

[0018] Preferably, the water circulation part also includes a bending portion, which is arranged close to the back cover. The bending portion is formed by bending part of the water inlet pipe a and the water outlet pipe b, and is accommodated in the drainage pipe fixing part. Elastic parts are specially arranged in the water inlet pipe a and the water outlet pipe b.

[0019] The beneficial effects of the utility model are:

[0020] 1. The setting of the adjustment part and the water circulation part greatly shortens the length of the ablation handle, making it suitable for ablation under the influence of small door openings, and organizes and manages scattered cables and water pipes, improving the operating experience;

[0021] 2. The ablation handle is provided with a main push button and an auxiliary push button. The main push button mainly controls the length of the ablation needle (the ablation needle body and the entire insulating film), and the auxiliary push button mainly controls the length of the exposed needle tip of the insulating film, which is suitable for adjustment at different positions and ablation areas under small door openings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the appearance of the utility model;

[0023] Figure 2 It is a first side view of the utility model;

[0024] Figure 3 yes Figure 2 Schematic diagram of the middle AA direction;

[0025] Figure 4 It is the axonometric drawing of the adjustment part;

[0026] Figure 5 It is a second side view of the utility model;

[0027] Figure 6 yes Figure 5 Schematic diagram of the BB direction;

[0028] Figure 7 It is a structural schematic diagram of the button support part and the connecting part;

[0029] Figure 8 It is an axonometric diagram of the water cycle section;

[0030] Fig. 9 It is an exploded view of the utility model;

[0031] Fig.10 yes Figure 5 Schematic diagram of CC direction.

[0032] Figure: 1, ablation handle; 2, ablation needle; 3, main push assembly; 4, auxiliary push assembly; 41, first auxiliary push assembly; 411, fixing part; 412, first clamping part; 413, first auxiliary button; 42, second auxiliary push assembly; 421, second auxiliary button; 422, second clamping part; 43, spring; 5, scale groove; 11, adjustment part; 111, first shell; 112, front cover; 12, water circulation Ring part; 121, second shell; 122, back cover; 123, drainage tube fixing part; 124, bending part; 125, elastic part; 21, ablation needle body; 22, insulating film; 23, inner tube; 31, key push button; 32, key support part; 33, connecting part; 331, thermocouple lead-out port; 332, water inlet pipe lead-out port; 333, water outlet pipe lead-out port; 334, wire lead-out port; 34, slot part. DETAILED DESCRIPTION

[0033] In order to make the purpose and advantages of the utility model more clear, the utility model is specifically described in combination with the embodiments below. It should be understood that the following text is only used to describe a cold cycle adjustable ablation needle or several specific implementations of the utility model, and does not strictly limit the protection scope of the specific request of the utility model. As used in this article, the terms up and down and left and right are not limited to their strict geometric definitions, but include reasonable and inconsistent tolerances for machining or human errors. The specific features of the cold cycle adjustable ablation needle are described in detail below:

[0034] like Figure 1-Figure 10 As shown, a cold cycle adjustable ablation needle of the utility model comprises an ablation handle 1 and an ablation needle 2, wherein the ablation needle 2 comprises an ablation needle body 21 and an insulating film 22, wherein the ablation needle 2 passes through the front end of the ablation handle 1, and a main pushing component 3 and a secondary pushing component 4 are arranged on the ablation handle 1, wherein the main pushing component 3 mainly controls the length of the ablation needle 2, and the secondary pushing component 4 mainly controls and adjusts the length of the ablation needle body 21 exposed by the insulating film 22;

[0035] The ablation handle 1 is composed of an adjusting part 11 and a water circulation part 12, and a connecting piece 33 is provided between the adjusting part 11 and the water circulation part 12. A thermocouple outlet 331, a water inlet pipe outlet 332, a water outlet pipe outlet 333 and a wire outlet 334 are penetrated by the connecting piece 33. The setting of the adjusting part 11 and the water circulation part 12 greatly shortens the length of the ablation handle, which is suitable for ablation under the influence of a small door opening. The setting of each outlet organizes and manages scattered cables and water pipes, thereby improving the doctor's operating experience.

[0036] Advantageously, the adjusting portion 11 comprises a first shell 111 and a front cover 112, the first shell 111 and the front cover 112 are sealed and fixedly connected, the front cover 112 and the first shell 111 can be connected by bonding, snapping or the like, and the fixing method of the two is not limited here, the first shell 111 is also provided with at least one scale groove 5, the scale grooves 5 are axially evenly spaced along the front side of the first shell 111, the scale grooves 5 are connected end to end, and the main pushing assembly 3 is snapped onto the first shell 111.

[0037] Advantageously, the main pushing component 3 includes a button push button 31 and a button support portion 32, the button push button 31 is fixed to the button support portion 32, the button push button 31 has a protrusion that is engaged in one of the scale grooves 5, the button push button 31 and the button support portion 32 can be integrally formed or separately formed, and the connection form is not limited; the ablation needle 2 passes through the button support portion 32, and when the operator pushes the button push button 31 to slide in the scale groove 5, the button support portion 32 then slides axially in the first shell 111 to adjust the length of the ablation needle 2, and the scale groove 5 displays the axial displacement length of the ablation needle 2 in real time.

[0038] Advantageously, the button support portion 32 is further provided with a hollow portion, and a slot portion 34 is provided in the hollow portion, and the secondary pushing component 4 can be snapped into the slot portion 34 .

[0039] Advantageously, the push button 31 is elastic and can be disengaged from the scale groove 5 by pressing.

[0040] Advantageously, the secondary push component 4 includes a first secondary push component 41 and a second secondary push component 42, the first secondary push component 41 and the second secondary push component 42 are respectively clamped in the slide grooves symmetrically arranged on the left and right sides of the first shell 111, the first secondary push component 41 includes a fixing portion 411, a first clamping portion 412 and a first secondary button 413, the ablation needle body 21 passes through the fixing portion 411 and is sealed and fixedly connected to the rear end of the button support portion 32, the insulating film 22 is fixed in the fixing portion 411; one end of the fixing portion 411 is fixedly connected to the first clamping portion 412, and the other end is fixedly connected to the first secondary button Button 413, pushing the first sub-button 413 can control the length of the insulating film 22 covering the ablation needle 2; the second sub-pushing component 42 includes a second sub-button 421, a second clamping portion 422 and a spring 43 installed therebetween, the second clamping portion 422 is clamped with the slot portion 34, and the first clamping portion 412 and the second clamping portion 422 are slidably clamped; the purpose of setting the spring 43 is that when the operator presses the second sub-button 421, the second clamping portion 422 can be separated from the slot portion 34; after releasing the hand, the second clamping portion 422 can rebound into the slot portion 34, thereby limiting the sub-pushing component 4.

[0041] Beneficially, the ablation handle 1 also includes an inner tube 23, the connecting piece 33 is sealingly connected to the rear end of the button support portion 32, a water circulation cavity is formed between the connecting piece 33 and the button support portion 32, the inner tube 23 is coaxially arranged in the ablation needle body 21, the inner tube 23 passes through the connecting piece 33 and is fixed thereto, the inner tube 23 is connected to the water inlet pipe outlet 332, the water inlet pipe outlet 332 is connected to the water inlet pipe a, the water circulation cavity is connected to the ablation needle 2, the water outlet pipe outlet 333 is connected to the water circulation cavity, the thermocouple outlet 331 is used to pass the thermocouple wire, and the wire outlet 334 is used to pass the cable wire.

[0042] Advantageously, the water circulation portion 12 includes a second shell 121, a back cover 122 and a drainage pipe fixing member 123. The second shell 121 is sealed and fixedly connected to the back cover 122. The second shell 121 and the back cover 122 can be formed separately or integrally. The back cover 122 is respectively provided with openings corresponding to the thermocouple outlet 331, the water inlet pipe outlet 332, the water outlet pipe outlet 333 and the wire outlet 334 to cooperate with the connector 33 to lead out corresponding water pipes and cables; the drainage pipe fixing member 123 is sealed and fixedly connected to the back cover 122 and the second shell 121. The drainage pipe fixing member 123 is provided with a drainage pipe to lead out water from the water inlet pipe and the water outlet pipe, and the handle length can be relatively shortened.

[0043] Advantageously, the water circulation portion 12 also includes a bending portion 124, which is arranged close to the back cover 122. The bending portion 124 is formed by bending part of the water inlet pipe a and the water outlet pipe b, and is accommodated in the drainage tube fixing member 123. The water inlet pipe a and the water outlet pipe b are specially provided with an elastic member 125, which can be a spring or other component with bending function. Specifically, this product adopts a spring, and the length of the spring is equal to the length of the water inlet pipe and the water outlet pipe. The advantage of arranging a spring in the bent water pipe is that when a cooling solvent flows through the water pipe, the water flow will not be blocked at the bend of the water pipe, thereby ensuring smooth water circulation and not interfering with the medical operation during the doctor's operation.

[0044] It is clear to those skilled in the art that various modifications to the above embodiments can be made without departing from the overall spirit and concept of the present invention. All of them fall within the protection scope of the present invention. The protection scheme of the present invention shall be subject to the claims attached to the present invention.

Claims

1. A cold cycle adjustable ablation needle, comprising an ablation handle (1) and an ablation needle (2), characterized in that: The ablation needle (2) comprises an ablation needle body (21) and an insulating film (22), and the ablation needle (2) passes through the front end of the ablation handle (1); The ablation handle (1) is provided with a main pushing component (3) and a secondary pushing component (4), wherein the main pushing component (3) mainly controls the length of the ablation needle (2), and the secondary pushing component (4) mainly controls and adjusts the length of the ablation needle body (21) exposed by the insulating film (22); The ablation handle (1) is composed of an adjustment part (11) and a water circulation part (12), and a connecting piece (33) is provided between the adjustment part (11) and the water circulation part (12), and a thermocouple lead-out port (331), a water inlet pipe lead-out port (332), a water outlet pipe lead-out port (333) and a wire lead-out port (334) are provided through the connecting piece (33).

2. The cold cycle adjustable ablation needle according to claim 1, characterized in that: The adjusting part (11) comprises a first shell (111) and a front cover (112); the first shell (111) and the front cover (112) are sealed and fixedly connected; the first shell (111) is also provided with at least one scale groove (5); the scale grooves (5) are axially arranged at equal intervals along the front surface of the first shell (111); the scale grooves (5) are connected end to end; and the main driving assembly (3) is snap-connected to the first shell (111).

3. The cold cycle adjustable ablation needle according to claim 2, characterized in that: The main pushing component (3) comprises a key push button (31) and a key support portion (32), wherein the key push button (31) is fixed to the key support portion (32), and a protrusion on the key push button (31) is engaged in one of the scale grooves (5); the ablation needle (2) passes through the key support portion (32).

4. The cold cycle adjustable ablation needle according to claim 3, characterized in that: The button support portion (32) is also provided with a hollow portion, a slot portion (34) is provided in the hollow portion, and the auxiliary push component (4) can be snap-connected to the slot portion (34).

5. The cold cycle adjustable ablation needle according to claim 3, characterized in that: The key push button (31) is elastic.

6. The cold cycle adjustable ablation needle according to claim 4, characterized in that: The auxiliary push component (4) includes a first auxiliary push component (41) and a second auxiliary push component (42), the first auxiliary push component (41) and the second auxiliary push component (42) are respectively clamped in the slide grooves symmetrically arranged on the left and right sides of the first shell (111), the first auxiliary push component (41) includes a fixing part (411), a first clamping part (412) and a first auxiliary button (413), the ablation needle body (21) passes through the fixing part (411) and is sealed and fixedly connected to the rear end of the button support part (32), and the insulating film (22) is fixed in the fixing part (411); one end of the fixing part (411) is fixedly connected to the first clamping part (412), and the other end is fixedly connected to the first auxiliary button (413); The second secondary pushing assembly (42) comprises a second secondary button (421), a second clamping portion (422) and a spring (43) installed therebetween, the second clamping portion (422) being clamped with the clamping slot portion (34), and the first clamping portion (412) and the second clamping portion (422) being slidably clamped.

7. The cold cycle adjustable ablation needle according to claim 3, characterized in that: The ablation handle (1) also includes an inner tube (23), the connecting piece (33) is sealed and connected to the rear end of the button support part (32), a water circulation cavity is formed between the connecting piece (33) and the button support part (32), the inner tube (23) is coaxially arranged in the ablation needle body (21), the inner tube (23) passes through the connecting piece (33) and is fixed thereto, the inner tube (23) is connected to the water inlet pipe outlet (332), the water inlet pipe outlet (332) is connected to the water inlet pipe a, the water circulation cavity is connected to the ablation needle (2), and the water outlet pipe outlet (333) is connected to the water circulation cavity.

8. The cold cycle adjustable ablation needle according to claim 7, characterized in that: The water circulation part (12) comprises a second shell (121), a rear cover (122) and a drainage pipe fixing member (123); the second shell (121) is sealed and fixedly connected to the rear cover (122); the rear cover (122) is respectively provided with openings corresponding to the thermocouple outlet (331), the water inlet outlet (332), the water outlet outlet (333) and the wire outlet (334) to cooperate with the connecting member (33) to lead out corresponding water pipes and cables; The drainage tube fixing member (123) is connected to the rear cover (122) and the second shell (121) in a sealed and fixed manner, and a drainage tube is arranged inside the drainage tube fixing member (123).

9. The cold cycle adjustable ablation needle according to claim 8, characterized in that: The water circulation part (12) further comprises a bending portion (124), which is arranged close to the rear cover (122), the bending portion (124) is formed by bending part of the water inlet pipe a and the water outlet pipe b, and is received in the drainage pipe fixing member (123), and an elastic member (125) is specially arranged in the water inlet pipe a and the water outlet pipe b.

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