Welding device for ablation needle

Abstract

The utility model relates to a welding device of an ablation needle, and relates to the technical field of welding of ablation needles. The welding device of the ablation needle comprises a supporting base and a clamping base, the supporting base is located at the welding zero point position of the ablation needle, and a flexible contact part used for making contact with the needle tip of the ablation needle is arranged on the supporting base. Due to the fact that the supporting base makes contact with the needle point of the ablation needle, and the supporting base is located at the welding zero point position of the ablation needle, during welding, the clamping base can be driven by the linear moving mechanism to move relative to the supporting base, namely, the clamping base moves from the needle point of the ablation needle; the needle point of the ablation needle serves as a welding zero point and moves by a needed welding distance, so that when the stop pads on the two sides of the clamping base abut against the side walls of the two sides of the clamping base respectively, it can be indicated that the stop pads are located at the corresponding welding positions, and therefore the positioning error between the stop pads and the needle rod of the ablation needle can be reduced; and therefore, the assembly error after the needle rod is welded is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of welding ablation needles, in particular to a welding device for ablation needles. Background Art

[0002] To improve the safety and reliability of medical devices, various medical device manufacturers have implemented numerous improvements and upgrades to their products' safety factors. For example, during the production of ablation needles, to enhance safety, stop pads are added to the needle shafts. Specifically, two stop pads are placed at the end of the shaft, which lock into the handle of the needle to improve product safety and reliability.

[0003] During the production process, the stop pad and needle bar are welded manually using lead-free soldering. Because laser welding can cause weld leaks or deformation on thin-walled or ultra-thin needle bars, manual welding is required. During manual welding, workers typically measure and determine the weld position between the stop pad and needle bar from the end of the needle bar. This method results in significant positioning errors for the stop pad, which in turn leads to significant assembly errors after welding. Utility Model Content

[0004] The utility model provides a welding device for an ablation needle, which is used to solve at least one of the above-mentioned technical problems.

[0005] The utility model provides a welding device for an ablation needle, comprising:

[0006] a support seat, the support seat being located at the needle tip of the ablation needle and being configured to be in contact with the needle tip of the ablation needle; and

[0007] A clamping seat, wherein the clamping seat is provided with a first locking mechanism and a first needle groove, wherein the first needle groove is used to accommodate the needle rod of the ablation needle. After the needle rod passes through the first needle groove, the first locking mechanism can lock the needle rod with the first needle groove, and the stop pads on the needle rod are respectively located on both sides of the clamping seat;

[0008] a base, on which the clamping base and the supporting base are movably disposed respectively; and

[0009] A linear moving mechanism is connected to the clamping seat and is used to drive the clamping seat to move on the base relative to the support seat.

[0010] In one embodiment, the clamping seat includes a first support and a first pressure cover, one side of the first pressure cover is rotatably connected to the first support, and one or more grooves are provided on the first support and the first pressure cover, and the grooves on the first pressure cover and the corresponding grooves on the first support form the first needle groove; after the first pressure cover is rotated to engage with the first support, the first locking mechanism locks the first pressure cover and the first support.

[0011] In one embodiment, the first locking mechanism includes a first adjusting rod and a first locking ring, one end of the first adjusting rod is threadedly connected to the first locking ring, and the other end of the first adjusting rod is rotatably connected to the first support;

[0012] A first boss is provided at one end of the first pressure cover, and a first slot is provided in the first boss. After the first pressure cover is rotated to engage with the first support, the first adjusting rod can be rotated relative to the first support to engage with the first slot, and the first locking ring can press the first boss from above the first boss.

[0013] In one embodiment, a first buffer pad is further provided on the first support and / or the first pressure cover, and the first buffer pad is located on a side of the corresponding groove.

[0014] In one embodiment, when there are multiple grooves, at least two grooves among the multiple grooves have the same diameter or at least two grooves have different diameters.

[0015] In one embodiment, the linear motion mechanism includes a screw mechanism, and the screw mechanism includes a screw rod, and the screw rod passes through the clamping seat and is connected to a screw nut on the clamping seat.

[0016] In one embodiment, a screw rod fixing seat is further included, which is located on a side of the clamping seat away from the support seat, and the fixed end and the support end of the screw rod are rotatably connected to the screw rod fixing seat and the support seat respectively.

[0017] In one embodiment, at least one auxiliary seat is further included, which is located between the clamping seat and the supporting seat. The needle rod can pass through the at least one auxiliary seat, and the auxiliary seat can move relative to the supporting seat to provide support for the needle rod between the clamping seat and the supporting seat.

[0018] In one embodiment, a second locking mechanism and a second needle groove are provided on the auxiliary seat, and the second needle groove is used to accommodate the needle rod. After the needle rod passes through the second needle groove, the second locking mechanism can lock the needle rod and the second needle groove.

[0019] In one embodiment, the support seat is provided with a flexible contact portion for contacting the needle tip of the ablation needle.

[0020] In one embodiment, a slide groove and a scale line layer are provided on the base, the clamping seat and the support seat are respectively connected to the slide groove, and the support seat is fixed at the zero point position of the scale line layer.

[0021] Compared with the prior art, the advantage of the present invention is that, since the support seat is in contact with the needle tip of the ablation needle and the support seat is located at the welding zero point of the ablation needle, the clamping seat can be driven to move relative to the support seat through a linear moving mechanism during welding, that is, the movement of the clamping seat starts from the needle tip of the ablation needle, and the needle tip of the ablation needle is used as the welding zero point and moved the required welding distance. Therefore, when the stop pads on both sides of the clamping seat are respectively against the side walls on both sides of the clamping seat, it can be indicated that the stop pads are located at the corresponding welding positions, thereby reducing the positioning error between the stop pad and the needle rod of the ablation needle, and then reducing the assembly error after the needle rod is welded. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be described in more detail below based on embodiments with reference to the accompanying drawings.

[0023] Figure 1A and Figure 1B This is a schematic diagram of the three-dimensional structure of the welding device in the embodiment of the present utility model;

[0024] Figure 2 This is a front view of a welding device in an embodiment of the present utility model;

[0025] Figure 3 It is a partial top view of the welding device in the embodiment of the present utility model;

[0026] Figure 4A yes Figure 1A An enlarged view of point A is shown;

[0027] Figure 4B yes Figure 1B An enlarged view of point B is shown;

[0028] Figure 5 It is a front view of the base in the embodiment of the utility model;

[0029] Figure 6 It is a left side view of the base in the embodiment of the utility model;

[0030] Figure 7 This is a front view of the screw rod fixing seat in the embodiment of the present utility model;

[0031] Figure 8This is a front view of the clamping seat in the embodiment of the utility model;

[0032] Figure 9 This is a schematic diagram of the three-dimensional structure of the clamping seat in the embodiment of the utility model;

[0033] Figure 10 This is a front view of the auxiliary seat in the embodiment of the present utility model;

[0034] Figure 11 This is a schematic diagram of the three-dimensional structure of the auxiliary seat in the embodiment of the utility model;

[0035] Figure 12 This is a front view of the support seat in the embodiment of the present utility model;

[0036] Figure 13 It is a right side view of the support base in the embodiment of the present utility model.

[0037] Reference numerals:

[0038] 100, base; 101, slide; 102, scale line layer;

[0039] 200, joystick;

[0040] 300, screw rod fixing seat; 301, fourth support; 302, bearing; 303, third retaining ring;

[0041] 400, screw mechanism; 401, fixed end; 402, supporting end; 403, screw;

[0042] 500, clamping seat;

[0043] 501, first support; 502, screw nut;

[0044] 503, first pressing cover; 5031, first buffer pad; 5032, first boss; 5033, first slot;

[0045] 504, first locking mechanism; 5041, first adjusting rod; 5042, first locking ring;

[0046] 505, first pin; 506, first retaining ring;

[0047] 507, first needle groove; 5071, first groove; 5072, second groove;

[0048] 600, ablation needle; 601, needle tip; 602, needle shaft; 603, stop pad;

[0049] 701, fastener; 702, slide nut;

[0050] 800, auxiliary seat;

[0051] 801, second support; 802, through hole;

[0052] 803, second pressure cover; 8031, second buffer pad; 8032, second boss; 8033, second slot;

[0053] 804, second locking mechanism; 8041, second adjustment rod; 8042, second locking ring;

[0054] 805, second pin; 806, second retaining ring;

[0055] 807, second needle groove;

[0056] 900, support seat; 901, third support seat; 902, flexible contact portion; 903, oil-free bushing;

[0057] 9011, support end face; 9021, contact surface; 9022, adhesive backing surface. DETAILED DESCRIPTION

[0058] The present invention will be further described below with reference to the accompanying drawings.

[0059] like Figures 1A-13 As shown, the present invention provides a welding device for an ablation needle, comprising a base 100, a support base 900 and a clamping base 500 provided on the base 100, and a linear moving mechanism connected to the clamping base 500. Figure 1A 、 Figure 1B and Figure 2 As shown, the support seat 900 is located at the welding zero point of the ablation needle 600. The support seat 900 is provided with a flexible contact portion 902 for contacting the needle tip 601 of the ablation needle 600. The flexible contact portion 902 can avoid the formation of rigid contact between the needle tip 601 and the support seat 900, which may cause deformation of the needle tip 601.

[0060] Since ablation needles 600 of the same specifications may have certain errors in length, in order to reduce the assembly error after welding the needle rod 602, when welding and positioning the needle rod 602 and the stop pad 603 thereon, the tail end of the ablation needle 600 cannot be used as the welding zero point (reference point) to weld and position the stop pad 603 on the needle rod 602. Instead, the needle tip 601 of the ablation needle 600 needs to be used as the welding zero point to weld and position the stop pad 603.

[0061] Therefore, in the present invention, the support seat 900 is set at the welding zero point position of the ablation needle 600, and the needle tip 601 of the ablation needle 600 is placed against the flexible contact part 902 on the support seat 900 to ensure that the needle tip 601 is located at the welding zero point position of the ablation needle 600.

[0062] The linear motion mechanism is connected to the clamping seat 500 and can drive the clamping seat 500 to move relative to the support seat 900. During welding, the linear motion mechanism drives the clamping seat 500 to move with the needle tip 601 of the ablation needle 600 as the welding zero point. That is, the distance between the clamping seat 500 and the support seat 900 is measured with the position of the needle tip 601 of the ablation needle 600 as the starting point. Therefore, when the stop pads 603 on both sides of the clamping seat 500 respectively abut against the side walls on both sides of the clamping seat 500, it can be indicated that the stop pads 603 have moved the corresponding welding distance with the needle tip 601 of the ablation needle 600 as the welding zero point and are located at the desired welding position. In other words, the stop pads 603 are effectively positioned for welding with the needle tip 601 of the ablation needle 600 as the welding zero point, thereby reducing assembly errors after needle rod welding and ensuring the quality of needle rod welding.

[0063] In addition, since the linear motion mechanism is used to drive the clamping seat 500 to move to locate the welding position of the clamping seat 500 and the stop pad 603, there is no need to manually measure the welding position, thereby improving production efficiency.

[0064] like Figure 8 and Figure 9 As shown, the clamping seat 500 is provided with a first locking mechanism 504 and a first needle groove 507. The first needle groove 507 is used to accommodate the needle shaft 602 of the ablation needle 600. After the needle shaft 602 of the ablation needle 600 passes through the first needle groove 507, the first locking mechanism 504 can lock the needle shaft 602 with the first needle groove 507, and the stop pads 603 on the needle shaft 602 are respectively located on both sides of the clamping seat 500.

[0065] Combined with attachment Figure 1A As shown, after the first locking mechanism 504 locks the needle rod 602 in the first needle groove 507, since the stop pad 603 is sleeved on the needle rod 602, the stop pads 603 on both sides of the clamping seat 500 can be pushed respectively to abut against the side walls on both sides of the clamping seat 500, as shown in FIG. Figure 1B 、 Figure 4A and Figure 4B As shown, the side walls on both sides of the clamping seat 500 can support the stop pad 603 to facilitate welding between the stop pad 603 and the needle rod 602.

[0066] Specifically, if Figure 8 and Figure 9 As shown, the clamping seat 500 includes a first support 501 and a first pressure cover 503. One side of the first pressure cover 503 is rotatably connected to the first support 501. One or more grooves are provided on the first support 501 and the first pressure cover 503. Figure 9As shown, one or more first grooves 5071 are provided at the upper end of the first support 501, and one or more second grooves 5072 are provided at the lower end of the first pressure cover 503. The first groove 5071 and the second groove 5072 can be semicircular grooves. When the first support 501 is rotated to engage with the first pressure cover 503, the first groove 5071 and the corresponding second groove 5072 can form a first needle groove 507 to accommodate the needle rod 602 of the ablation needle 600.

[0067] After the first pressing cover 503 rotates to be engaged with the first support 501 , the first locking mechanism 504 locks the first pressing cover 503 and the first support 501 .

[0068] like Figure 8 and Figure 9 As shown, in some embodiments, the first locking mechanism 504 includes a first adjustment rod 5041 and a first locking ring 5042. One end of the first adjustment rod 5041 is threadedly connected to the first locking ring 5042, and the other end of the first adjustment rod 5041 is rotatably connected to the first support 501. Specifically, the first adjustment rod 5041 can be rotatably connected to the first support 501 via a first pin 505, and the end of the first adjustment rod 5041 is fixed to the first pin 505 via a first retaining ring 506. Therefore, the first adjustment rod 5041 can rotate with the first pin 505 as a pivot axis.

[0069] A first boss 5032 is provided at one end of the first pressure cover 503, and a first slot 5033 is provided in the first boss 5032. After the first pressure cover 503 is rotated to engage with the first support 501, the first adjusting rod 5041 can be rotated relative to the first support 501 to engage and connect with the first slot 5033, and the first locking ring 5042 can press the first boss 5032 from above.

[0070] like Figure 9 As shown, please combine Figure 1A 、 Figure 1B 、 Figure 2 and Figure 3 The first pressure cover 503 can be rotated to the open position relative to the first support 501, and the first adjustment rod 5041 can be rotated relative to the first support 501 until the first locking ring 5042 faces downward. At this time, the needle rod 602 of the ablation needle 600 can be conveniently placed in the first groove 5071 on the first support 501.

[0071] like Figure 8 As shown, please combine Figure 1AThe first gland 503 can be rotated in the opposite direction relative to the first support 501 to the closed position, thereby confining the shaft 602 of the ablation needle 600 between the first groove 5071 on the first support 501 and the second groove 5072 on the first gland 503. At this time, the first adjustment rod 5041 is rotated relative to the first support 501 until the first locking ring 5042 faces upward, and the first adjustment rod 5041 can be locked into the first locking groove 5033. Then, by rotating the first locking ring 5042, the first locking ring 5042 can lock the first gland 503 on the first support 501 from above.

[0072] It is understandable that the first adjusting rod 5041 is a screw, and the first locking ring 5042 is threadedly connected to the first adjusting rod 5041. Therefore, by tightening the first locking ring 5042, the first pressing cover 503 can be pressed against the first support 501. Therefore, the pressing force between the first pressing cover 503 and the first support 501 can be adjusted by the first locking ring 5042.

[0073] Alternatively, the first locking ring 5042 and the first adjusting rod 5041 may also be in a buckled connection, and the first pressing cover 503 may be pressed onto the first support 501 by rotating and buckling.

[0074] like Figure 8 As shown, when there are multiple grooves, at least two of the multiple grooves have the same diameter or at least two of the multiple grooves have different diameters. That is, the diameters of the first needle groove 507 formed by the first groove 5071 and the corresponding second groove 5072 can be the same or different, thereby accommodating multiple ablation needles 600 of the same specifications or multiple ablation needles 600 of different specifications. For example, the diameter of the first needle groove 507 can be adapted to the needle shaft 602 of the ablation needle 600 with an outer diameter of 0.5 mm to 3 mm.

[0075] A first buffer pad 5031 is also provided on the first support 501 and / or the first pressure cover 503. The first buffer pad 5031 is a flexible silicone pad and is located on the side of the corresponding groove. Figure 9 As shown, when a plurality of second grooves 5072 are provided on the first pressure cover 503, the first buffer pad 5031 can be located between two adjacent second grooves 5072. The provision of the first buffer pad 5031 can prevent the needle rod 602 from being damaged due to rigid contact with the needle rod 602.

[0076] To prevent excessive heat loss from the clamping base 500 during welding, which would affect the welding performance of the stopper pad 603, the clamping base 500 should be made of a non-metallic material with low thermal conductivity, such as bakelite. In other words, both the first support 501 and the first gland 503 can be made of bakelite.

[0077] like Figure 9 As shown, please combine Figure 2 The first support 501 is constructed as an L-shaped structure, and its bottom end is set on the base 100. Figure 6 and Figure 9 As shown, a slide groove 101 is provided on the base 100, and the slide groove 101 extends along the axial direction of the needle rod 602. A slide groove nut 702 is provided in the slide groove 101, as shown in FIG. Figure 6 and Figure 1B As shown, the slide groove 101 is constructed as a groove body with an upward opening, and the size of the opening is smaller than the size of the groove body, so the slide groove nut 702 can move in the slide groove 101 but will not fall out of the slide groove 101.

[0078] A fastener 701 is provided at the bottom end of the first support 501. The fastener 701 is connected to a slide nut 702. The first support 501 can be connected to the slide 101 through the fastener 701, so that the first support 501 can move along the slide 101. When the fastener 701 is tightened, the first support 501 can be fixed at a desired position.

[0079] Further, if Figure 5 and Figure 1B As shown, a scale layer 102 is provided on the upper surface of the base 100. The support base 900 is fixed at the zero point position of the scale layer 102. The corresponding scale on the scale layer 102 can indicate the distance between the first support 501 and the support base 900, so that the first support 501 can be quickly moved to the desired position.

[0080] The base 100 can be a profile structure, which can be machined or injection molded. The scale line layer 102 on the base 100 can be produced by laser processing or silk screen printing. The scale lines on the scale line layer 102 have an accuracy of 0.5 mm, which meets the precision requirements for welding and positioning the stop pad 603. The scale lines can be matched with needle rods 602 with lengths ranging from 30 mm to 700 mm.

[0081] Please continue to see Figure 1A 、 Figure 1B 、 Figure 2 and Figure 3 The linear moving mechanism includes a screw mechanism 400 connected to the clamping seat 500. In addition, the linear moving mechanism can also be a motor mechanism, a belt mechanism, a gear rack mechanism or a worm mechanism that can make the clamping seat 500 move linearly.

[0082] like Figure 1A 、 Figure 1B and Figure 2 As shown, the screw mechanism 400 is taken as an example for description.

[0083] The screw mechanism 400 includes a screw 403, which passes through the clamping seat 500 and is connected to a screw nut 502 on the clamping seat 500. It can be understood that the screw 403 and the needle shaft 602 of the ablation needle 600 are arranged parallel to each other.

[0084] Please combine Figure 8 and Figure 9 A screw nut 502 is provided on the first support 501, and the screw rod 403 is threadedly connected to the screw nut 502. Therefore, when the screw rod 403 rotates, the screw nut 502 can move thereon, thereby driving the first support 501 to move.

[0085] Alternatively, as Figure 1B and Figure 2 As shown, the fixed end 401 of the screw rod 403 is also connected to the rocker 200. By manually rotating the rocker 200, the screw rod 403 can be rotated, thereby driving the screw nut 502 and the first support 501 to move thereon.

[0086] Alternatively, it can be understood that the fixed end 401 of the screw rod 403 can also be connected to a power source such as a motor (such as a servo motor drive or a stepper motor), so that the screw rod 403 can be driven by the motor to rotate, thereby driving the screw nut 502 and the first support 501 to move on the screw rod 403, thereby being able to position the first support 501 to the corresponding position faster and more accurately.

[0087] In addition, the welding device further includes a screw fixing seat 300, which is located on a side of the clamping seat 500 away from the supporting seat 900. Figure 1A 、 Figure 1B and Figure 2 As shown, the fixed end 401 and the supporting end 402 of the screw rod 403 are rotatably connected to the screw rod fixing base 300 and the supporting base 900 respectively.

[0088] like Figure 7 As shown, the screw fixing base 300 includes a fourth support 301, on which a bearing 302 is provided. The bearing 302 is fixed to the fourth support 301 via a third retaining ring 303. The fixed end 401 of the screw 403 is connected to the bearing 302, so that the fixed end 401 of the screw 403 and the fourth support 301 can rotate relative to each other.

[0089] The bearing 302 may be a single-row self-aligning bearing to adapt to a light axial load and low speed working environment.

[0090] Alternatively, the bearing 302 may also be a double-row self-aligning bearing.

[0091] Alternatively, the bearing 302 may also be a single-row self-aligning bearing set, and the single-row self-aligning bearings in the single-row self-aligning bearing set may be installed back-to-back or face-to-face.

[0092] Alternatively, the bearing 302 may be replaced by an oil-free bushing, which may be made of copper alloy, nylon or polytetrafluoroethylene.

[0093] The fourth support 301 can adopt an L-shaped structure similar to the first support 501, and its bottom end is set on the base 100. Figure 6 and Figure 7 As shown, a slide nut 702 is provided in the slide 101. The slide nut 702 can move in the slide 101 but will not fall out of the slide 101. A fastener 701 is provided at the bottom end of the fourth support 301. The fastener 701 is connected to the slide nut 702. The fastener 701 can connect the fourth support 301 to the slide 101, so that the fourth support 301 can be manually moved along the slide 101 to a desired position. When the fastener 701 is tightened, the fourth support 301 is fixed in the desired position.

[0094] like Figure 12 As shown, the screw support base 900 includes a third support 901, on which an oil-free bushing 903 is fixedly mounted. The support end 402 of the screw 403 is connected to the oil-free bushing 903, thereby allowing the support end 402 of the screw 403 and the third support 901 to rotate relative to each other. The oil-free bushing 903 can be made of copper alloy, nylon, or polytetrafluoroethylene. Alternatively, the oil-free bushing 903 can be replaced with a bearing (such as a deep groove ball bearing) to adapt to light radial loads, low speeds, and normal temperature working environments.

[0095] The third support 901 can be an L-shaped structure similar to the first support 501, and its bottom end is set on the base 100. Figure 6 and Figure 12 As shown, a slide nut 702 is provided in the slide 101. The slide nut 702 can move in the slide 101 but will not fall out of the slide 101. A fastener 701 is provided at the bottom end of the third support 901. The fastener 701 is connected to the slide nut 702. The third support 901 can be connected to the slide 101 through the fastener 701. Therefore, the third support 901 can be manually moved along the slide 101 to the zero scale line position on the scale line layer 102. When the fastener 701 is tightened, the third support 901 is fixed at the zero scale line position on the scale line layer 102.

[0096] In addition, if Figure 1A As shown, please combine Figure 2 and Figure 13The flexible contact portion 902 on the third support 901 can be, for example, a flexible silicone pad, one side of which is a backing adhesive surface 9022, and the flexible silicone pad can be adhered to the third support 901 through the backing adhesive surface 9022. The other side of the flexible silicone pad is a contact surface 9021 that contacts the needle tip 601 of the ablation needle 600, which is flush with the support end face 9011 of the third support 901, so as to facilitate the zero point positioning of the needle tip 601 of the ablation needle 600.

[0097] Furthermore, for the ablation needle 600 with a longer needle shaft 602 , in order to prevent the clamping seat 500 from clamping the tail end of the ablation needle 600 and causing the needle tip 601 to sag, at least one auxiliary seat 800 is further provided at the needle tip 601 .

[0098] like Figure 1A 、 Figure 1B and Figure 2 As shown, at least one auxiliary seat 800 is located between the clamping seat 500 and the support seat 900, the needle rod 602 can pass through at least one auxiliary seat 800, and the auxiliary seat 800 can move relative to the support seat 900 to provide support for the needle rod 602 between the clamping seat 500 and the support seat 900.

[0099] like Figure 10 and Figure 11 As shown, the auxiliary seat 800 is provided with a second locking mechanism 804 and a second needle groove 807. The second needle groove 807 is used to accommodate the needle rod 602. After the needle rod 602 passes through the second needle groove 807, the second locking mechanism 804 can lock the needle rod 602 with the second needle groove 807.

[0100] The auxiliary seat 800 may adopt a structure similar to that of the clamping seat 500 described above.

[0101] Specifically, if Figure 10 and Figure 11 As shown, the auxiliary base 800 includes a second support 801 and a second pressure cover 803. One side of the second pressure cover 803 is rotatably connected to the second support 801. The second support 801 and the second pressure cover 803 are both provided with one or more grooves. The grooves can be semicircular grooves. When the second support 801 is rotated to engage with the second pressure cover 803, the corresponding grooves on the second support 801 and the second pressure cover 803 can form a second needle groove 807 to accommodate the needle shaft 602 of the ablation needle 600. Figure 1B .

[0102] After the second pressing cover 803 rotates to engage with the second support 801 , the second locking mechanism 804 locks the second pressing cover 803 and the second support 801 .

[0103] The second locking mechanism 804 may adopt a structure similar to that of the first locking mechanism 504 described above.

[0104] Specifically, if Figure 10 and Figure 11 As shown, in some embodiments, the second locking mechanism 804 includes a second adjustment rod 8041 and a second locking ring 8042. One end of the second adjustment rod 8041 is threadedly connected to the second locking ring 8042, and the other end of the second adjustment rod 8041 is rotatably connected to the second support 801. Specifically, the second adjustment rod 8041 can be rotatably connected to the second support 801 via a second pin 805, and the end of the second adjustment rod 8041 is fixed to the second pin 805 via a second retaining ring 806. Therefore, the second adjustment rod 8041 can rotate with the second pin 805 as a pivot axis.

[0105] A second boss 8032 is provided at one end of the second pressure cover 803, and a second slot 8033 is provided in the second boss 8032. After the second pressure cover 803 is rotated to engage with the second support 801, the second adjustment rod 8041 can be rotated relative to the second support 801 to engage and connect with the second slot 8033, and the second locking ring 8042 can press the second boss 8032 from above.

[0106] like Figure 11 As shown, the second gland 803 can be rotated relative to the second support 801 to the open position, and the second adjustment rod 8041 is rotated relative to the second support 801 until the second locking ring 8042 faces downward. At this time, the needle rod 602 of the ablation needle 600 can be easily placed into the groove on the second support 801. Figure 1B .

[0107] like Figure 10 As shown, the second gland 803 can be rotated in the opposite direction relative to the second support 801 to the closed position, thereby confining the needle shaft 602 of the ablation needle 600 between the groove on the second support 801 and the groove on the second gland 803. At this time, the second adjustment rod 8041 is rotated relative to the second support 801 until the second locking ring 8042 faces upward, and the second adjustment rod 8041 can be snapped into the second locking groove 8033. Then, by rotating the second locking ring 8042, the second locking ring 8042 can lock the second gland 803 on the second support 801 from above.

[0108] It is understood that the second adjustment rod 8041 is a screw, and the second locking ring 8042 is threadedly connected to the second adjustment rod 8041. Therefore, by tightening the second locking ring 8042, the second gland 803 can be pressed against the second support 801. Alternatively, the second locking ring 8042 and the second adjustment rod 8041 can also be fastened together, and the second gland 803 can also be pressed against the second support 801 by rotating the fastening.

[0109] Similarly, when there are multiple grooves on the second support 801 and the second gland 803, at least two of the multiple grooves have the same diameter or at least two of the multiple grooves have different diameters, that is, the diameters of the second needle grooves 807 can be the same or different, thereby accommodating multiple ablation needles 600 of the same specifications or multiple ablation needles 600 of different specifications. For example, the diameter of the second needle groove 807 can be adapted to the needle shaft 602 of the ablation needle 600 with an outer diameter of 0.5 mm to 3 mm.

[0110] A second cushion pad 8031 ​​is also provided on the second support 801 and / or the second pressure cover 803. The second cushion pad 8031 ​​is a flexible silicone cushion and is located on the side of the corresponding groove. Figure 11 As shown, when a plurality of grooves are provided on the second pressure cover 803 , the second buffer pad 8031 ​​can be located between two adjacent grooves. The provision of the second buffer pad 8031 ​​can prevent the needle rod 602 from being damaged due to rigid contact with the needle rod 602 .

[0111] In addition, the second support 801 can also be constructed as an L-shaped structure, with its bottom end disposed on the base 100. Figure 6 and Figure 10 As shown, a fastener 701 is provided at the bottom end of the second support 801, and the fastener 701 is connected to the slide nut 702. The second support 801 can be connected to the slide 101 through the fastener 701, so that the second support 801 can move along the slide 101. When the fastener 701 is tightened, the second support 801 can be fixed at a desired position.

[0112] In addition, a through hole 802 is provided on the second support 801. Figure 10 and Figure 1B As shown, the screw rod 403 passes through the through hole 802, that is, the second support 801 is not connected to the screw rod 403, so the rotation of the screw rod 403 does not drive the movement of the second support 801. Since the second support 801 only plays a supporting role, it can be manually adjusted to a suitable position.

[0113] When welding the ablation needle 600, first install two stop pads 603 on the needle shaft 602 of the ablation needle 600 (see Figure 4B ), which can move freely on the needle bar 602.

[0114] Secondly, move the third support 901 along the slide groove 101 on the base 100 to the zero scale line position on the scale line layer 102, and fix the third support 901 to the slide groove nut 702 by tightening the fastener 701 on the third support 901, so that the third support 901 can be fixed at the zero scale line position.

[0115] By rotating the screw rod 403 through the rocker 200, the first support 501 is moved with the zero scale line position of the third support 901 as the welding zero point. After moving to the desired position, the fastener 701 on the first support 501 is tightened to fix it with the slide nut 702, so that the first support 501 can be fixed at this position.

[0116] For the ablation needle 600 with a longer needle shaft 602 , the auxiliary seat 800 can be moved to a corresponding position.

[0117] Third, rotate the first gland 503 to the open position relative to the first support 501, rotate the second gland 803 to the open position relative to the second support 801, and place the shaft 602 of the ablation needle 600 into the groove on the first support 501 and the groove on the second support 801, respectively, with the two stop pads 603 on the shaft 602 located on either side of the first support 501. Align the needle tip 601 with the flexible contact portion 902 on the third support 901 and contact it.

[0118] Fourth, rotate the first pressure cover 503 to the closed position relative to the first support 501, and press the first pressure cover 503 onto the first support 501 through the first locking ring 5042; rotate the second pressure cover 803 to the closed position relative to the second support 801, and press the second pressure cover 803 onto the second support 801 through the second locking ring 8042, thereby fixing the needle rod 602 on the first support 501 and the second support 801.

[0119] Finally, push the two stop pads 603 on the needle rod 602 so that they contact the side walls on both sides of the first support 501 respectively, which means that the distance between the two stop pads 603 and the needle tip 601 is the required welding distance. At this time, the stop pads 603 and the needle rod 602 can be welded.

[0120] While the present invention has been described with reference to preferred embodiments, various modifications may be made and equivalent components may be substituted without departing from the scope of the present invention. In particular, the various technical features described in the various embodiments may be combined in any manner, provided no structural conflicts exist. The present invention is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions within the scope of the claims.

Claims

1. A welding device for an ablation needle, characterized in that: include: a support seat (900), the support seat (900) being located at the needle tip (601) of the ablation needle and being configured to be in contact with the needle tip (601) of the ablation needle; as well as A clamping seat (500), wherein the clamping seat (500) is provided with a first locking mechanism (504) and a first needle groove (507), wherein the first needle groove (507) is used to accommodate the needle rod (602) of the ablation needle, and after the needle rod (602) passes through the first needle groove (507), the first locking mechanism (504) can lock the needle rod (602) with the first needle groove (507), and the stop pads (603) on the needle rod (602) are respectively located on both sides of the clamping seat (500); A base (100), the clamping seat (500) and the supporting seat (900) are respectively movably arranged on the base (100); and A linear movement mechanism is connected to the clamping seat (500) and is used to drive the clamping seat (500) to move on the base (100) relative to the support seat (900).

2. The welding device for an ablation needle according to claim 1, characterized in that: The clamping seat (500) includes a first support (501) and a first pressure cover (503), one side of the first pressure cover (503) is rotatably connected to the first support (501), and one or more grooves are provided on the first support (501) and the first pressure cover (503), and the grooves on the first pressure cover (503) and the corresponding grooves on the first support (501) form the first needle groove (507); after the first pressure cover (503) is rotated to engage with the first support (501), the first locking mechanism (504) locks the first pressure cover (503) and the first support (501).

3. The welding device for an ablation needle according to claim 2, characterized in that: The first locking mechanism (504) comprises a first adjusting rod (5041) and a first locking ring (5042), one end of the first adjusting rod (5041) is threadedly connected to the first locking ring (5042), and the other end of the first adjusting rod (5041) is rotatably connected to the first support (501); A first boss (5032) is provided at one end of the first pressure cover (503), and a first slot (5033) is provided in the first boss (5032). After the first pressure cover (503) is rotated to be engaged with the first support (501), the first adjustment rod (5041) can be rotated relative to the first support (501) to be engaged with the first slot (5033), and the first locking ring (5042) can press the first boss (5032) from above the first boss (5032).

4. The welding device for an ablation needle according to claim 2 or 3, characterized in that: A first buffer pad (5031) is further provided on the first support (501) and / or the first pressure cover (503), and the first buffer pad (5031) is located on the side of the corresponding groove.

5. The welding device for an ablation needle according to claim 2 or 3, characterized in that: When there are multiple grooves, at least two of the grooves have the same diameter or at least two of the grooves have different diameters.

6. The welding device for an ablation needle according to claim 2 or 3, characterized in that: The linear motion mechanism includes a screw mechanism (400), the screw mechanism (400) includes a screw (403), and the screw (403) passes through the clamping seat (500) and is connected to a screw nut (502) on the clamping seat (500).

7. The welding device for an ablation needle according to claim 6, characterized in that: The invention also includes a screw rod fixing seat (300), wherein the screw rod fixing seat (300) is located on a side of the clamping seat (500) away from the support seat (900), and the fixed end (401) and the supporting end (402) of the screw rod (403) are rotatably connected to the screw rod fixing seat (300) and the support seat (900) respectively.

8. The welding device for an ablation needle according to any one of claims 1 to 3, characterized in that: It also includes at least one auxiliary seat (800), which is located between the clamping seat (500) and the supporting seat (900), and the needle rod (602) can pass through the at least one auxiliary seat (800). The auxiliary seat (800) can move relative to the supporting seat (900) to provide support for the needle rod (602) between the clamping seat (500) and the supporting seat (900).

9. The welding device for an ablation needle according to claim 8, characterized in that: The auxiliary seat (800) is provided with a second locking mechanism (804) and a second needle groove (807). The second needle groove (807) is used to accommodate the needle rod (602). After the needle rod (602) passes through the second needle groove (807), the second locking mechanism (804) can lock the needle rod (602) and the second needle groove (807).

10. The welding device for an ablation needle according to claim 8, characterized in that: The support seat (900) is provided with a flexible contact portion (902) for contacting the needle tip (601) of the ablation needle.

11. The welding device for an ablation needle according to any one of claims 1 to 3, characterized in that: The base (100) is provided with a slide groove (101) and a scale line layer (102); the clamping seat (500) and the support seat (900) are respectively connected to the slide groove (101), and the support seat (900) is fixed at the zero point position of the scale line layer (102).

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