Positioning surgical device and handle structure

Abstract

The embodiment of the application provides a positioning surgical device and a handle structure, and relates to the positioning surgical instrument field.The application aims to improve the problem that it is difficult to accurately puncture the lesion center position in the operation.The application comprises a handle structure, a needle tube and a needle core;the proximal end of the needle tube is installed on the handle structure, the needle core is movably shuttled in the needle tube, the distal end of the needle core can extend or retract from the distal end of the needle tube, and the distal end of the needle core is curled after extending from the needle tube.The needle tube is punctured to the lesion position, the distal end of the needle core is extended from the needle tube under the action of the handle structure, the needle core is hooked to the lesion by being curled, so that the lesion is locked, the pre-positioning of the lesion is realized, the lesion is prevented from being displaced when puncture biopsy and thermal chemical ablation are performed, the surgical instrument can be accurately punctured to the lesion center in the operation, and the operation efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of surgical instruments for positioning, and more specifically, to a surgical device for positioning and a handle structure. Background Technology

[0002] Techniques such as needle biopsy and thermochemical ablation are currently routine surgical methods for diagnosing and treating nodules, benign and malignant tumors in various organs. For some superficial space-occupying lesions, when performing needle biopsy for pathological analysis and thermochemical ablation for inactivation, it is difficult to accurately place the needle and thermochemical ablation instruments at the center of the lesion, thus affecting the pathological analysis results and the efficacy of thermochemical ablation. Summary of the Invention

[0003] The present invention includes, for example, providing a positioning surgical device that can improve the problem that surgical instruments are difficult to accurately puncture the center of the lesion during surgery.

[0004] The present invention also aims to provide a handle structure that can improve the problem that surgical instruments are difficult to accurately puncture the center of the lesion during surgery.

[0005] The embodiments of the present invention can be implemented as follows:

[0006] An embodiment of the present invention provides a positioning surgical device, including a handle structure, a needle tube, and a needle core; the proximal end of the needle tube is mounted on the handle structure, and the needle core is movably inserted into the needle tube so that the distal end of the needle core can extend or retract from the distal end of the needle tube, and the distal end of the needle core curls up after extending from the needle tube.

[0007] In addition, the positioning surgical device provided in the embodiments of the present invention may also have the following additional technical features:

[0008] Optionally, there are multiple needle cores, all of which are installed inside the needle tube. One end of each needle core is connected to the handle structure, and the other end of each needle core bends after extending out of the needle tube.

[0009] Optionally, the positioning surgical device also includes a needle core limiting post, which is fixed inside the needle tube and has a limiting hole for the needle core to pass through and for guiding the needle core along the axial direction of the needle tube.

[0010] Optionally: The handle structure includes a handle, a lever, and a trigger handle;

[0011] The pull rod is slidably disposed inside the handle along the axial direction of the needle tube, and a locking part is provided on the pull rod; the trigger handle is movably disposed on the handle, and the trigger handle is provided with a buckle; the needle core is connected to the pull rod;

[0012] The lever is used to be fixed relative to the handle when the buckle is engaged with the locking part, or to be slidable relative to the handle when the buckle is disengaged from the locking part.

[0013] Optionally: the engaging part is used to engage with the buckle when the engaging part engages with the buckle and the pull rod slides relative to the handle in the first direction, and the pull rod slides relative to the handle in the first direction to drive the needle core to retract into the needle tube;

[0014] The locking part is used to lock the lever when it engages with the buckle and the lever slides relative to the handle in the second direction.

[0015] The first and second directions are opposite and both are parallel to the axis of the needle.

[0016] Optionally, the handle structure further includes a first reset member; the first reset member is disposed inside the handle and abuts against the pull rod; the first reset member is used to drive the pull rod to move in a second direction when the buckle disengages from the engaging part, so as to drive the distal end of the needle core to extend out of the needle tube.

[0017] Optionally: the trigger handle includes a pressing element;

[0018] The pressing element is rotatably mounted on the handle, and the buckle is slidably mounted inside the handle. The buckle is hinged to the pressing element, and the pressing element is used to drive the buckle to engage or disengage from the engaging part during rotation.

[0019] Optionally, the trigger handle also includes a reed; the reed is disposed between the pressing member and the handle; the reed is used to reset the pressing member and to drive the latch to engage with the engagement part when the pressing member is reset.

[0020] Optionally: the handle structure also includes an anti-trigger element;

[0021] The anti-trigger component is slidably installed inside the handle, and the buckle is provided with an anti-trigger groove. Under the action of external force, the anti-trigger component can be inserted into or removed from the anti-trigger groove. When the anti-trigger component is inserted into the anti-trigger groove, the buckle engages with the engaging part. When the anti-trigger component is removed from the anti-trigger groove, the buckle can disengage from the engaging part.

[0022] Optionally, the handle structure also includes a cam; the cam is rotatably disposed within the handle and located at the distal end of the handle; the outer peripheral wall of the cam is used to abut against the pull rod as the pull rod moves from the proximal end to the distal end of the handle to prevent the pull rod from moving.

[0023] Optionally, the handle structure also includes an adjusting handle, which is rotatably mounted on the handle and connected to the cam. During rotation, the adjusting handle drives the cam to rotate so that different parts of the outer peripheral wall of the cam abut against the pull rod.

[0024] Optionally, the adjustable handle is also provided with an angle limiting part, and the handle is provided with a mating hole. The angle limiting part is used to engage with the mating hole at different angles so that the adjustable handle is fixed relative to the handle.

[0025] Optionally: the adjustable handle is slidably mounted on the handle;

[0026] As the handle moves along its axial direction, the angle limiting part engages or disengages from the mating hole.

[0027] Optionally, the handle structure further includes a second reset member disposed between the cam and the handle to reset the cam, and the angle limiting part engages with the mating hole.

[0028] Embodiments of the present invention also provide a handle structure, including a handle, a lever, and a trigger handle;

[0029] The lever is slidably mounted inside the handle, and a locking part is provided on the lever; the trigger handle is movably mounted on the handle, and the trigger handle is provided with a buckle;

[0030] The lever is used to be fixed relative to the handle when the buckle is engaged with the locking part, or to be slidable relative to the handle when the buckle is disengaged from the locking part.

[0031] Optionally: the engaging part is used to slide with the buckle when the engaging part is engaged with the buckle and the pull rod slides relative to the handle in the first direction;

[0032] The locking part is used to lock the lever when it engages with the buckle and the lever slides relative to the handle in the second direction.

[0033] The first direction is opposite to the second direction.

[0034] Optionally, the handle structure further includes a first reset member; the first reset member is disposed inside the handle and abuts against the pull rod; the first reset member is used to drive the pull rod to move in a second direction when the buckle disengages from the engaging part.

[0035] Optionally: the trigger handle includes a pressing element;

[0036] The pressing element is rotatably mounted on the handle, and the buckle is slidably mounted inside the handle. The buckle is hinged to the pressing element, and the pressing element is used to drive the buckle to engage or disengage from the engaging part during rotation.

[0037] Optionally, the trigger handle also includes a reed; the reed is disposed between the pressing member and the handle; the reed is used to reset the pressing member and to drive the latch to engage with the engagement part when the pressing member is reset.

[0038] Optionally: the handle structure also includes an anti-trigger element;

[0039] The anti-trigger component is slidably installed inside the handle, and the buckle is provided with an anti-trigger groove. Under the action of external force, the anti-trigger component can be inserted into or removed from the anti-trigger groove. When the anti-trigger component is inserted into the anti-trigger groove, the buckle engages with the engaging part. When the anti-trigger component is removed from the anti-trigger groove, the buckle can disengage from the engaging part.

[0040] Optionally, the handle structure also includes a cam; the cam is rotatably disposed within the handle and located at the distal end of the handle; the outer peripheral wall of the cam is used to abut against the pull rod as the pull rod moves from the proximal end to the distal end of the handle to prevent the pull rod from moving.

[0041] Optionally, the handle structure also includes an adjusting handle, which is rotatably mounted on the handle and connected to the cam. During rotation, the adjusting handle drives the cam to rotate so that different parts of the outer peripheral wall of the cam abut against the pull rod.

[0042] Optionally, the adjustable handle is also provided with an angle limiting part, and the handle is provided with a mating hole. The angle limiting part is used to engage with the mating hole at different angles so that the adjustable handle is fixed relative to the handle.

[0043] Optionally: the adjustable handle is slidably mounted on the handle;

[0044] As the handle moves along its axial direction, the angle limiting part engages or disengages from the mating hole.

[0045] Optionally, the handle structure further includes a second reset member disposed between the cam and the handle to reset the cam, and the angle limiting part engages with the mating hole.

[0046] The beneficial effects of the positioning surgical device and handle structure of the present invention include, for example:

[0047] The positioning surgical device is used to lock the lesion, achieving pre-positioning of the lesion. In puncture biopsy and thermochemical ablation procedures, the positioning surgical device provided in this embodiment is first used to enter the vicinity of the lesion and lock it in place, solving the current clinical problem where the lesion easily "moves" during puncture. This prevents lesion movement before performing puncture biopsy or thermochemical ablation, improving the accuracy of puncture, alleviating the difficulty of accurately puncturing the center of the lesion with surgical instruments, reducing patient discomfort, decreasing the reliance on the surgeon's experience, shortening operation time, and improving surgical efficacy and success rate. Attached Figure Description

[0048] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0049] Figure 1 A first-view structural schematic diagram of the positioning surgical device provided in an embodiment of the present invention;

[0050] Figure 2 This is a partial structural diagram of the positioning surgical device provided in an embodiment of the present invention;

[0051] Figure 3 This is a schematic diagram of the needle tube and needle core in the positioning surgical device provided in an embodiment of the present invention;

[0052] Figure 4 This is a schematic diagram of a positioning surgical device provided in an embodiment of the present invention, in which two needle cores are used.

[0053] Figure 5 This is a schematic diagram of a positioning surgical device provided in an embodiment of the present invention, in which three needle cores are used.

[0054] Figure 6 This is a schematic diagram of the needle core limiting post in the positioning surgical device provided in an embodiment of the present invention;

[0055] Figure 7 A second-view structural schematic diagram of the positioning surgical device provided in an embodiment of the present invention;

[0056] Figure 8 For along Figure 7 A sectional view of BB in the diagram;

[0057] Figure 9 This is a schematic diagram of the assembly of the trigger handle in the positioning surgical device provided in an embodiment of the present invention;

[0058] Figure 10 This is a schematic diagram of the assembly of the anti-trigger component in the positioning surgical device provided in an embodiment of the present invention;

[0059] Figure 11 For along Figure 7 Sectional view of AA in the diagram;

[0060] Figure 12 This is a schematic diagram of the assembly of the cam in the positioning surgical device provided in an embodiment of the present invention.

[0061] Icons: 10-Surgical device for positioning; 100-Needle; 110-Needle core; 120-Needle core limiting post; 140-Needle core seat; 200-Handle structure; 210-Handle; 220-Pull rod; 221-Clack part; 222-Protrusion part; 223-Abutting part; 300-Trigger handle; 310-Pressing element; 320-Connecting rod; 330-Lock; 331-Anti-trigger groove; 340-Spring; 400-First spring; 500-Anti-trigger element; 510-Anti-trigger rod; 600-Cam; 610-Adjusting handle; 611-Angle limiting part; 612-Rotating part; 620-Second spring; 630-Buffer plate. Detailed Implementation

[0062] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0063] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0064] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0065] In the description of this invention, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this invention is usually placed, they are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0066] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0067] It should be noted that, where there is no conflict, the features in the embodiments of the present invention can be combined with each other.

[0068] When performing pathological analysis via biopsy and ablation for tumor inactivation, the lesion often "moves" during puncture, affecting the puncture path and preventing the accurate placement of the biopsy needle and ablation device at the center of the lesion. Clinical practices to address these issues include: 1. Pre-compressing the lesion until its relative position is stable before puncture; 2. Performing multiple punctures, withdrawing the needle to adjust the puncture angle (direction) to achieve the most accurate puncture to the core area of ​​the lesion; 3. During ablation, raising the ablation area to completely cover the tumor. However, this requires a certain level of skill from the surgeon, and excessive ablation during ablation can cause significant trauma to the patient and increase the risk of postoperative complications. The positioning surgical device and handle structure provided in this embodiment can improve upon these problems.

[0069] The following is combined Figures 1 to 12 The positioning surgical device 10 provided in this embodiment will be described in detail.

[0070] Please refer to Figure 1 and Figure 2 An embodiment of the present invention provides a positioning surgical device 10, including a handle structure 200, a needle tube 100, and a needle core 110; the proximal end of the needle tube 100 is mounted on the handle structure 200, and the needle core 110 is movably inserted into the needle tube 100 so that the distal end of the needle core 110 can extend or retract from the distal end of the needle tube 100, and the distal end of the needle core 110 curls after extending out of the needle tube 100.

[0071] It should be noted that, as those skilled in the art will understand, throughout this text, during the use of the positioning surgical device 10, the front end of the positioning surgical device 10 is used to insert into the human body, and the rear end of the positioning surgical device 10 is operated by the doctor. Therefore, relatively speaking, the portion of each component near the front end of the positioning surgical device 10 is called the distal end of the component, and the portion of the component near the rear end of the positioning surgical device 10 is called the proximal end of the component. Figure 1 In the middle, from the distal end to the proximal end of the positioning surgical device 10, the various components of the positioning surgical device 10 are approximately in... Figure 1 They are displayed sequentially.

[0072] After the needle 100 is inserted into the lesion, the distal end of the needle core 110 extends out of the needle 100 under the drive of the handle structure 200. The end of the needle core 110 extending out of the needle 100 bends, thereby hooking the lesion and pre-locating it before proceeding with the biopsy needle or thermochemical ablation procedure. This effectively prevents the lesion from moving during the biopsy needle or thermochemical ablation procedure, improving surgical efficiency.

[0073] Please refer to Figure 3Specifically, the needle tube 100 is a tubular structure. In this embodiment, the outer diameter of the needle tube 100 is 0.7-2.4 mm, and the length is 50-200 mm. Please refer to... Figure 4 and Figure 5 The distal end of the needle 100 can be a double-headed structure, a triple-headed design, or a multi-headed design. The outer surface of the needle 100 is printed with graduations to facilitate the doctor's control of the puncture depth.

[0074] It should be noted that "curling" refers to the deformation of the distal end of the needle core 110 after it extends out of the needle tube 100. Curling is a form of deformation that allows it to hook onto the lesion. This is determined by the properties of the material of the needle core 110 itself. Specifically, the distal end of the needle core 110 is an elastic part that can bend naturally. During the process of the needle tube 100 puncturing into the lesion, the distal end of the needle core 110 is located inside the needle tube 100. After the puncture is completed, the elastic part of the needle core 110 protrudes from the needle tube 100 and bends to hook onto the lesion.

[0075] Continue to refer to Figure 3 In this embodiment, there are multiple needle cores 110, all of which are installed inside the needle tube 100. One end of each needle core 110 is connected to the handle structure 200, and the other end of each needle core 110 bends after extending out of the needle tube 100. Specifically, the number of needle cores 110 can be one, two, or more than three. When two needle cores 110 are used, they can hook onto the lesion from two directions, thereby effectively locking the lesion. At the same time, since they can hook onto the lesion from two directions, the bending angle of the needle core 110 can be made smaller, reducing the manufacturing difficulty of the needle core 110.

[0076] Specifically, the needle core 110 is made of medical-grade stainless steel or nickel-titanium alloy. The proximal end of the needle core 110 is welded to the needle core seat 140, which is movably mounted on the handle structure 200.

[0077] Reference Figure 6 , combined Figure 8 In this embodiment, the positioning surgical device 10 further includes a needle core limiting post 120, which is fixed inside the needle tube 100. The needle core limiting post 120 is provided with a limiting hole for the needle core 110 to pass through and for guiding the needle core 110 along the axial direction of the needle tube 100. The needle core limiting post 120 is located inside the needle tube 100 and has a limiting hole corresponding to the needle core 110. Its main function is to limit the needle core 110 and prevent it from getting tangled or deformed axially inside the needle tube 100.

[0078] Specifically, the needle core limiting post 120 is columnar and embedded in the needle tube 100. The needle core limiting post 120 can also adopt other shapes, as long as the limiting hole extends along the axial direction of the needle tube 100.

[0079] The number of limiting holes can correspond one-to-one with the number of needle cores 110. That is, one limiting hole passes through one needle core 110, or multiple needle cores 110 pass through one limiting hole. The specific method depends on the limiting effect of the limiting hole on the needle core 110.

[0080] Please refer to Figure 7 , combined Figure 8 In this embodiment, the handle structure 200 includes a handle 210, a pull rod 220, and a trigger handle 300. The pull rod 220 is slidably disposed within the handle 210 along the axial direction of the needle tube 100, and a locking part 221 is provided on the pull rod 220. The trigger handle 300 is movably disposed on the handle 210, and a buckle 330 is provided on the trigger handle 300. The needle core 110 is connected to the pull rod 220. The pull rod 220 is used to be fixed relative to the handle 210 when the buckle 330 is engaged with the locking part 221, or to be slidable relative to the handle 210 when the buckle 330 is disengaged from the locking part 221.

[0081] When the buckle 330 engages with the locking part 221 and the pull rod 220 is fixed relative to the handle 210, the handle 210 can be gripped to insert the needle 100 into the lesion. When the buckle 330 disengages from the locking part 221 and the pull rod 220 slides relative to the handle 210, the needle core 110 can be extended or retracted from the needle 100. Figure 1 The relative positions of the lever 220 relative to the handle 210 are described below. Moving the lever 220 to the left relative to the handle 210 will retract the needle core 110 into the needle tube 100. Moving the lever 220 to the right relative to the handle 210 will extend the needle core 110 out of the needle tube 100.

[0082] Specifically, the handle 210 includes a first housing and a second housing that are fixedly connected, with a hollow space formed between the first housing and the second housing.

[0083] Specifically, the pull rod 220 has a rod-shaped structure, with one end of the pull rod 220 passing through the handle 210 and the other end of the pull rod 220 connected to the needle core 110. Specifically, the needle core seat 140 is fixed to the distal end of the pull rod 220, and the needle core 110 is connected to the needle core seat 140.

[0084] Continue to refer to Figure 8 In this embodiment, the engaging part 221 is used to engage with the buckle 330 when the engaging part 221 engages with the buckle 330 and the pull rod 220 slides relative to the handle 210 in the first direction, thereby driving the needle core 110 to retract into the needle tube 100 when the pull rod 220 slides relative to the handle 210 in the first direction; or the engaging part 221 is used to be locked by the buckle 330 when the engaging part 221 engages with the buckle 330 and the pull rod 220 slides relative to the handle 210 in the second direction; the first direction and the second direction are opposite and both are parallel to the axial direction of the needle tube 100.

[0085] by Figure 8 The relative positions in the text are introduced, the first direction refers to Figure 8 The direction indicated by the middle arrow A is from right to left; the second direction refers to... Figure 8 The direction indicated by the middle arrow B is from left to right.

[0086] The lever 220 slides to the left relative to the handle 210, and simultaneously engages with the buckle 330. Once the lever 220 is in position, the buckle 330 engages with the locking part 221, preventing the lever 220 from moving to the right relative to the handle 210. This triggers the handle 300, causing the buckle 330 to disengage from the locking part 221, allowing the lever 220 to move to the right relative to the handle 210, extending the needle core 110 out of the needle tube 100. After the surgery, moving the lever 220 to the left retracts the needle core 110 back into the needle tube 100, allowing the needle tube 100 to be withdrawn from the lesion.

[0087] Specifically, the engaging part 221 consists of multiple teeth protruding from the outer wall of the pull rod 220, arranged sequentially along the axial direction of the pull rod 220. The buckle 330 is used to engage between two adjacent teeth to lock the pull rod 220 to the handle 210. Specifically, the multiple teeth form a unidirectional rack.

[0088] Specifically, the latch 330 is wedge-shaped. The latch 330 can also be of other shapes, as long as it can slide with the one-way tooth when the lever 220 moves relative to the handle 210 in the first direction, and engage between the two engaging parts 221 when the lever 220 moves relative to the handle 210 in the second direction.

[0089] Continue to refer to Figure 8 In this embodiment, the handle structure 200 further includes a first reset member; the first reset member is disposed inside the handle 210 and abuts against the pull rod 220; the first reset member is used to drive the pull rod 220 to move in the second direction when the buckle 330 disengages from the engaging part 221, so as to drive the distal end of the needle core 110 to extend out of the needle tube 100.

[0090] Specifically, the first reset element is a first spring 400. A protrusion 222 is provided on the outer wall of the pull rod 220. The first spring 400 is fitted onto the outer periphery of the pull rod 220, with one end of the first spring 400 abutting against the handle 210 and the other end abutting against the protrusion 222. After the trigger handle 300 drives the buckle 330 to disengage from the engaging part 221, the pull rod 220, under the action of the first spring 400, moves relative to the handle 210 in a second direction, thereby driving the needle core 110 to extend out of the needle tube 100. When the pull rod 220 moves relative to the handle 210 in a first direction, the protrusion 222 on the pull rod 220 compresses the first spring 400.

[0091] Continue to refer to Figure 8 , combined Figure 9In this embodiment, the trigger handle 300 includes a pressing member 310; the pressing member 310 is rotatably disposed on the handle 210, and the buckle 330 is slidably disposed inside the handle 210, and the buckle 330 is hinged to the pressing member 310. The pressing member 310 is used to drive the buckle 330 to engage or disengage from the engaging part 221 during rotation.

[0092] Specifically, the pressing member 310 is strip-shaped, and its middle portion is rotatably mounted on the outer wall of the handle 210. The latch 330 is hinged to one end of the pressing member 310. Specifically, the latch 330 is slidably mounted within the handle 210 along the radial direction of the handle 210. Rotating the pressing member 310 drives the latch 330 to slide back and forth, thereby disengaging from or engaging with the engaging portion 221.

[0093] Specifically, the trigger handle 300 also includes a connecting rod 320, one end of which is hinged to the pressing member 310, and the other end of which is hinged to the latch 330. The hinges are achieved via a pin.

[0094] Specifically, a support frame is also provided inside the handle 210, and a radially extending channel is provided on the support frame. The buckle 330 is slidably disposed in the channel. The channel limits the stroke of the buckle 330.

[0095] Continue to refer to Figure 8 , combined Figure 9 In this embodiment, the trigger handle 300 further includes a spring 340; the spring 340 is disposed between the pressing member 310 and the handle 210; the spring 340 is used to reset the pressing member 310, and to drive the latch 330 to engage with the engaging part 221 when the pressing member 310 is reset.

[0096] Under the action of the spring 340, the latch 330 engages with the serrated structure on the pull rod 220, preventing the pull rod 220 from rebounding under the force of the first spring 400. At this time, the entire device is in a charged, ready-to-fire state. When the trigger handle 300 is pulled, the trigger handle 300, through the connecting rod 320, moves the latch 330 away from the pull rod 220. The pull rod 220 loses the restraining effect of the latch 330 and is instantly fired under the action of the first spring 400.

[0097] Please refer to Figure 10 In this embodiment, the handle structure 200 also includes an anti-triggering member 500; the anti-triggering member 500 is slidably disposed in the handle 210, and the buckle 330 is provided with an anti-triggering groove 331. The anti-triggering member 500 can be engaged or disengaged from the anti-triggering groove 331 under the action of external force; when the anti-triggering member 500 is engaged in the anti-triggering groove 331, the buckle 330 engages with the engaging part 221; when the anti-triggering member 500 is disengaged from the anti-triggering groove 331, the buckle 330 can disengage from the engaging part 221.

[0098] Specifically, the handle structure 200 also includes an anti-trigger lever 510, which is slidably mounted on the handle 210. An anti-trigger component 500 is fixed to the anti-trigger lever 510. During the sliding of the anti-trigger lever 510, the anti-trigger component 500 engages with or disengages from the anti-trigger groove 331. Specifically, both ends of the anti-trigger lever 510 extend out of the handle 210 for manual operation.

[0099] The anti-trigger lever 510 and the anti-trigger component 500 are fixedly connected to form a T-shaped structure lever. The anti-trigger component 500 engages with and is offset from the anti-trigger groove 331 of the latch 330 to prevent accidental triggering. When the lever 220 is pulled until the latch 330 restricts the lever 220, the anti-trigger lever 510 is pushed, and the anti-trigger component 500 is located in the anti-trigger groove 331 of the latch 330. At this time, the latch 330 is restricted, and pressing the trigger handle 300 cannot achieve firing.

[0100] Please refer to Figure 11 , combined Figure 12 In this embodiment, the handle structure 200 further includes a cam 600; the cam 600 is rotatably disposed within the handle 210 and located at the distal end of the handle 210; the outer peripheral wall of the cam 600 is used to abut against the pull rod 220 during the movement of the pull rod 220 from the proximal end to the distal end of the handle 210, so as to prevent the pull rod 220 from moving.

[0101] Specifically, the distal end of the pull rod 220 is provided with an abutment portion 223, and the cam 600 is arranged between the abutment portion 223 and the distal end of the handle 210. As the pull rod 220 slides toward the distal end of the handle 210, it can abut against the outer peripheral wall of the cam 600.

[0102] In this embodiment, by rotating the cam 600, different parts of the outer peripheral wall of the cam 600 abut against the pull rod 220 to prevent the pull rod 220 from moving further. This allows for adjustment of the firing stroke of the pull rod 220, indirectly controlling the forward firing stroke of the needle core 110 to accommodate lesions of various sizes.

[0103] Continue to refer to Figure 11 , combined Figure 12 In this embodiment, the handle structure 200 also includes an adjustable handle 610, which is rotatably mounted on the handle 210 and connected to the cam 600. During the rotation of the adjustable handle 610, the cam 600 is driven to rotate so that different parts of the outer peripheral wall of the cam 600 abut against the pull rod 220.

[0104] The end of the adjustable handle 610 away from the cam 600 extends outside the handle 210 for manually operating the rotation angle of the cam 600, thereby adjusting the stroke of the pull rod 220.

[0105] Continue to refer to Figure 11 , combined Figure 12 In this embodiment, the adjustable handle 610 is also provided with an angle limiting part 611, and the handle 210 is provided with a mating hole. The angle limiting part 611 is used to engage with the mating hole at different angles so that the adjustable handle 610 is fixed relative to the handle 210.

[0106] Specifically, the angle limiting part 611 is hexagonal, and a hexagonal hole is provided on the handle 210, with the hexagonal shape and the hexagonal hole fitting together. Adjusting the handle 610 to rotate causes the angle limiting part 611 to rotate, causing different peripheral walls of the angle limiting part 611 to engage with different inner walls of the hexagonal hole, thereby adjusting the placement position of the cam 600 so that different parts of the peripheral wall of the cam 600 can abut against the pull rod 220. The angle limiting part 611 can be simply polygonal; as the number of sides increases, the adjustable angle of the cam 600 increases, and the travel adjustment range of the pull rod 220 also expands. The hole on the handle 210 engages with the angle limiting part 611 to prevent circumferential rotation of the angle limiting part 611.

[0107] Continue to refer to Figure 11 , combined Figure 12 In this embodiment, the adjusting handle 610 is slidably disposed on the handle 210; during the movement of the adjusting handle 610 along its axial direction, the angle limiting part 611 engages or disengages from the mating hole.

[0108] by Figure 11 The relative positions of the cam 600 and the handle 610 are described below. When the handle 610 moves upward, the angle limiting part 611 disengages from the mating hole, and the handle 610 can rotate relative to the handle 210, thereby adjusting the placement position of the cam 600. After the adjustment is in place, the handle 610 moves downward, and the angle limiting part 611 is engaged in the mating hole. The handle 610 can no longer rotate relative to the handle 210, and the position of the cam 600 relative to the handle 210 is fixed.

[0109] Specifically, the adjusting handle 610 is further provided with a rotating part 612, and the rotating part 612 and the angle limiting part 611 are arranged sequentially along the axial direction of the adjusting handle 610. During the sliding process of the adjusting handle 610 relative to the handle 210, and when the angle limiting part 611 disengages from the mating hole, the rotating part 612 is located within the mating hole, allowing the adjusting handle 610 to rotate relative to the handle 210. Specifically, the rotating part 612 is cylindrical.

[0110] Continue to refer to Figure 11 , combined Figure 12 In this embodiment, the handle structure 200 also includes a second reset member, which is disposed between the cam 600 and the handle 210 to reset the cam 600 and engage the angle limiting part 611 with the mating hole.

[0111] Specifically, the second reset element is a second spring 620, which is fitted onto the adjusting handle 610. The two ends of the second spring 620 abut against the inner walls of the cam 600 and the handle 210, respectively. Specifically, the second spring 620 is fitted onto the outer periphery of the rotating part 612.

[0112] Continue to refer to Figure 11 , combined Figure 12 In this embodiment, the handle structure 200 also includes a buffer plate 630, which is fitted onto the outer peripheral wall of the cam 600. The buffer plate 630 can be made of soft plastics such as silicone or rubber. Its main function is to provide soft contact when the pull rod 220 impacts the cam 600.

[0113] Continue to refer to Figure 11 When in use, lift the adjusting handle 610 to compress the second spring 620. At this time, the rotating part 612 is located in the mating hole. Then rotate the adjusting handle 610 by a certain angle to align with the arrow mark on the handle 210. After releasing the handle, the adjusting handle 610 returns to its original position under the action of the second spring 620. The angle limiting part 611 engages with the mating hole, and the cam 600 rotates by a certain angle. At this time, when the pull rod 220 is fired again, its stroke changes due to the limitation effect of the rotated cam 600.

[0114] An embodiment of the present invention also provides a handle structure 200, including a handle 210, a pull rod 220, and a trigger handle 300; the pull rod 220 is slidably disposed within the handle 210, and a locking portion 221 is provided on the pull rod 220; the trigger handle 300 is movably disposed within the handle 210, and a buckle 330 is provided on the trigger handle 300; the pull rod 220 is used to be fixed relative to the handle 210 when the buckle 330 is engaged with the locking portion 221, or to be slidable relative to the handle 210 when the buckle 330 is disengaged from the locking portion 221. The needle core 110 is pre-set to a pre-firing state, and the needle core 110 is fired after the needle tube 100 is punctured to the lesion site, resulting in quick and precise operation.

[0115] In summary, the embodiments of the present invention provide a positioning surgical device 10 and a handle structure 200, and the clinical use steps are as follows:

[0116] 1. Before surgery, adjust cam 600 according to the size of the lesion; pull lever 220 to the appropriate position, at which point buckle 330 limits lever 220 (at this time, anti-trigger component 500 can be used);

[0117] 2. Under the guidance of medical imaging such as ultrasound and CT, insert the needle 100 into the lesion to the appropriate position;

[0118] 3. Press the trigger handle 300, which exposes the elastic part of the needle core 110 inside the needle tube 100 and inserts it into the lesion to "lock" it in place;

[0119] 4. Perform a biopsy or thermochemical ablation. After the procedure, retract the needle core 110 into the needle tube 100 and remove the needle tube 100 from the body.

[0120] The positioning surgical device 10 provided in this embodiment has at least the following advantages:

[0121] The distal end of the needle core 110 can naturally deform after extending from the needle tube 100, thereby hooking onto the lesion and locking it in place, achieving pre-positioning of the lesion. In puncture biopsy or thermochemical ablation, this can improve the accuracy of puncture and alleviate the problem of surgical instruments being difficult to accurately puncture the center of the lesion during surgery.

[0122] The handle structure 200 can fire the needle core 110 after the needle tube 100 is inserted into the lesion, making the operation quick and accurate.

[0123] The anti-trigger component 500 prevents accidental triggering by engaging or disengaging from the anti-trigger groove 331, ensuring the stability of the surgical procedure and avoiding accidental triggering that could lead to medical accidents.

[0124] Cam 600 can adjust the firing stroke of lever 220, indirectly controlling the forward firing stroke of needle core 110 to accommodate lesions of various sizes.

[0125] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A surgical device for positioning, characterized in that, include: Handle structure, needle tube, and needle core; The proximal end of the needle tube is mounted on the handle structure, and the needle core is movably inserted into the needle tube so that the distal end of the needle core can extend or retract into the distal end of the needle tube, and the distal end of the needle core curls up after extending out of the needle tube. The handle structure includes a handle, a lever, a trigger handle, an anti-trigger component, and a cam; The pull rod is slidably connected to the handle along the axial direction of the needle tube, and the pull rod is provided with a locking part; the trigger handle is movably disposed in the handle, and the trigger handle is provided with a buckle; the needle core is connected to the pull rod; The pull rod is used to be fixed relative to the handle when the buckle is engaged with the engaging part, or to be slidable relative to the handle when the buckle is disengaged from the engaging part; The engaging part is used to engage with the buckle when the engaging part engages with the buckle and the pull rod slides relative to the handle in the first direction, and the pull rod drives the needle core to retract into the needle tube when it slides relative to the handle in the first direction; Alternatively, the engaging portion may be used to lock the lever relative to the handle when the engaging portion engages with the buckle and the lever slides in the second direction relative to the handle; The first direction and the second direction are opposite, and both are parallel to the axis of the needle tube; The trigger handle includes a pressing member; the pressing member is rotatably disposed on the handle, the buckle is slidably disposed inside the handle, and the buckle is hinged to the pressing member; the pressing member is used to drive the buckle to engage or disengage from the engaging part during rotation. The anti-trigger component is slidably disposed in the handle, and the buckle is provided with an anti-trigger groove. The anti-trigger component can be engaged or disengaged from the anti-trigger groove under the action of external force. When the anti-triggering component is inserted into the anti-triggering groove, the buckle engages with the engaging part; when the anti-triggering component is disengaged from the anti-triggering groove, the buckle can disengage from the engaging part. The cam is rotatably disposed within the handle and located at the distal end of the handle; the outer peripheral wall of the cam is used to abut against the pull rod as the pull rod moves from the proximal end to the distal end of the handle to prevent the pull rod from moving.

2. The positioning surgical device according to claim 1, characterized in that: The needle cores are multiple in number, and all of the needle cores are installed inside the needle tube. One end of each of the needle cores is connected to the handle structure, and the other end of each of the needle cores bends after extending out of the needle tube.

3. The positioning surgical device according to claim 2, characterized in that: The positioning surgical device further includes a needle core limiting post, which is fixed inside the needle tube and has a limiting hole for the needle core to pass through and for guiding the needle core along the axial direction of the needle tube.

4. The positioning surgical device according to claim 1, characterized in that: The handle structure further includes a first reset member; the first reset member is disposed inside the handle and abuts against the pull rod; the first reset member is used to drive the pull rod to move in the second direction when the buckle disengages from the engaging part, so as to drive the distal end of the needle core to extend out of the needle tube.

5. The positioning surgical device according to claim 4, characterized in that: The trigger handle also includes a spring; the spring is disposed between the pressing member and the handle; the spring is used to reset the pressing member, and to drive the buckle to engage with the engaging part when the pressing member is reset.

6. The positioning surgical device according to claim 1, characterized in that: The handle structure also includes an adjustable handle, which is rotatably mounted on the handle and connected to the cam. During rotation, the adjustable handle drives the cam to rotate so that different parts of the outer peripheral wall of the cam abut against the pull rod.

7. The positioning surgical device according to claim 6, characterized in that: The adjustable handle is also provided with an angle limiting part, and the handle is provided with a mating hole. The angle limiting part is used to engage with the mating hole at different angles so that the adjustable handle is fixed relative to the handle.

8. The positioning surgical device according to claim 7, characterized in that: The adjustable handle is slidably mounted on the handle; As the adjusting handle moves along its axial direction, the angle limiting part engages with or disengages from the mating hole.

9. The surgical device for positioning according to claim 8, characterized in that: The handle structure further includes a second reset member, which is disposed between the cam and the handle to reset the cam, and the angle limiting part engages with the mating hole.

10. A handle structure, characterized in that, include: Handle, lever, trigger handle, anti-trigger element, and cam; The pull rod is slidably connected to the handle, and the pull rod is provided with a locking part; the trigger handle is movably disposed on the handle, and the trigger handle is provided with a buckle; The pull rod is used to be fixed relative to the handle when the buckle is engaged with the engaging part, or to be slidable relative to the handle when the buckle is disengaged from the engaging part; The engaging part is used to slide with the buckle when the engaging part is engaged with the buckle and the pull rod slides relative to the handle in the first direction; Alternatively, the engaging portion may be used to lock the lever relative to the handle when the engaging portion engages with the buckle and the lever slides in the second direction relative to the handle; The first direction and the second direction are opposite; The trigger handle includes a pressing member; the pressing member is rotatably disposed on the handle, the buckle is slidably disposed inside the handle, and the buckle is hinged to the pressing member; the pressing member is used to drive the buckle to engage or disengage from the engaging part during rotation. The anti-trigger component is slidably disposed in the handle, and the buckle is provided with an anti-trigger groove. The anti-trigger component can be engaged or disengaged from the anti-trigger groove under the action of external force. When the anti-triggering component is inserted into the anti-triggering groove, the buckle engages with the engaging part; when the anti-triggering component is disengaged from the anti-triggering groove, the buckle can disengage from the engaging part. The cam is rotatably disposed within the handle and located at the distal end of the handle; the outer peripheral wall of the cam is used to abut against the pull rod as the pull rod moves from the proximal end to the distal end of the handle to prevent the pull rod from moving.

11. The handle structure according to claim 10, characterized in that: The handle structure further includes a first reset member; the first reset member is disposed inside the handle and abuts against the pull rod; the first reset member is used to drive the pull rod to move in the second direction when the buckle disengages from the engaging portion.

12. The handle structure according to claim 11, characterized in that: The trigger handle also includes a spring; the spring is disposed between the pressing member and the handle; the spring is used to reset the pressing member, and to drive the buckle to engage with the engaging part when the pressing member is reset.

13. The handle structure according to claim 10, characterized in that: The handle structure also includes an adjustable handle, which is rotatably mounted on the handle and connected to the cam. During rotation, the adjustable handle drives the cam to rotate so that different parts of the outer peripheral wall of the cam abut against the pull rod.

14. The handle structure according to claim 13, characterized in that: The adjustable handle is also provided with an angle limiting part, and the handle is provided with a mating hole. The angle limiting part is used to engage with the mating hole at different angles so that the adjustable handle is fixed relative to the handle.

15. The handle structure according to claim 14, characterized in that: The adjustable handle is slidably mounted on the handle; As the adjusting handle moves along its axial direction, the angle limiting part engages with or disengages from the mating hole.

16. The handle structure according to claim 15, characterized in that: The handle structure further includes a second reset member, which is disposed between the cam and the handle to reset the cam, and the angle limiting part engages with the mating hole.

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