Piercing device

Abstract

The application provides a puncture device, which comprises a puncture assembly, a pushing assembly and a positioning assembly. The puncture assembly comprises a first handle body and a puncture needle, and the puncture needle is fixedly connected to the first handle body. The pushing assembly comprises a second handle body and a pushing member, the pushing member is slidingly connected to the second handle body, the second handle body is connected to the first handle body, and the pushing member comprises a pushing needle core which is inserted into the puncture needle. The positioning assembly comprises a positioning anchor and a positioning line, the positioning anchor is fixedly connected to the positioning line, the positioning line is inserted into the pushing needle core, the positioning line can be excited to generate fluorescence, and the positioning anchor is located in the puncture needle. The positioning anchor can be pushed to the outside of the puncture needle by the pushing needle core to be anchored to a target object. The puncture device provided by the application can anchor and position a target object (such as lung lesion tissue) and facilitate medical staff to find the anchored and positioned target object in subsequent operations.

Description

Technical Field

[0001] This application relates to the field of medical device technology, specifically to a puncture device. Background Technology

[0002] With the advancement of imaging diagnostic technologies such as CT, the early detection rate of sub-centimeter lung lesions has significantly improved. However, there is currently a lack of equipment that can locate lung lesions and facilitate medical personnel in locating lesions during surgery. Utility Model Content

[0003] This application provides a puncture device that can anchor and locate a target object (such as lung diseased tissue) and facilitates medical personnel in locating the anchored target object during subsequent surgery.

[0004] The puncture device includes:

[0005] A puncture assembly, comprising a first handle and a puncture needle, wherein the puncture needle is fixedly connected to the first handle;

[0006] A push assembly, comprising a second handle and a pusher, wherein the pusher is slidably connected to the second handle, the second handle being connected to the first handle, and the pusher includes a pusher needle core inserted into the interior of the puncture needle; and

[0007] A positioning component, comprising a positioning anchor and a positioning line, wherein the positioning anchor is fixedly connected to the positioning line, the positioning line is inserted inside the push needle core and the positioning line can be excited to generate fluorescence, the positioning anchor is located inside the puncture needle, and the positioning anchor can be pushed to the outside of the puncture needle by the push needle core to anchor to the target object.

[0008] The positioning anchor is made of shape memory alloy.

[0009] The positioning line includes a line body and a developing filament. The line body can generate fluorescence, and the developing filament is disposed inside the line body.

[0010] The positioning component further includes a connecting post, which connects the positioning anchor and the positioning line. The push needle core can push the positioning anchor by abutting against the connecting post.

[0011] The connecting post includes a first post and a second post connected to each other. The first post has a first end face, and the second post protrudes from the first end face. The second post is disposed inside the push needle core and connected to the positioning line. The push needle core has a second end face, and at least a portion of the second end face faces the first end face.

[0012] The puncture assembly further includes a slider, which is slidably sleeved on the outer periphery of the puncture needle.

[0013] The puncture needle includes a needle body and multiple indicator parts. The multiple indicator parts are spaced apart along the length of the needle body. The indicator parts protrude from the needle body. The sliding member can slide on the outer periphery of any one of the indicator parts and can be sleeved and fixed on the outer periphery of any one of the indicator parts.

[0014] The pusher further includes a push block, which is fixedly connected to the push needle core. The second handle is provided with a slide rail, and the push block is slidably disposed within the slide rail.

[0015] The slide rail includes an inner rail and a rail opening. The inner rail is located inside the second handle, and the rail opening passes through one side of the second handle and connects to the inner rail. The push block includes an outer block, a connecting body, and an inner block. The inner block is connected to the push needle core and is located on the inner rail. The outer block is located outside the second handle, and the connecting body is connected between the outer block and the inner block and is located inside the rail opening.

[0016] The second handle is also provided with a first latch, which is located at the end of the second handle away from the first handle. The first latch is connected to the track opening and passes through one side of the second handle to connect to the inner track. The first latch can accommodate the connecting body.

[0017] And / or, the second handle body is further provided with a second latch, the second latch is provided at one end of the second handle body near the first handle body, the second latch communicates with the track opening, and the second latch passes through one side of the second handle body to communicate with the inner track, the second latch can accommodate the connecting body.

[0018] When the puncture device provided in this application is used in surgery to mark a target object (such as diseased tissue in the lungs), a puncture needle can be inserted through the skin into the target object. Then, a pusher is pushed so that the pusher needle core pushes the positioning anchor outside the puncture needle. After the positioning anchor comes out from inside the puncture needle, it is anchored to the target object, thus completing the positioning process. Understandably, when subsequent surgery is needed on the anchored target object, medical personnel first need to locate the positioning anchor. However, the positioning anchor and positioning line themselves are small and thin, which is not conducive to the medical personnel's search. With the puncture device provided in this application, when subsequent surgery is needed on the anchored target object, a specific light source can be used to illuminate the positioning line, causing it to fluoresce. Since the positioning line is always connected to the positioning anchor, medical personnel can locate the positioning anchor based on the fluorescing positioning line, thereby quickly and accurately determining the location of the target object. Therefore, the fluorescent positioning line in this application plays a role in guiding medical personnel to quickly and accurately determine the location of the positioning anchor. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the puncture device provided in the embodiments of this application in its first state.

[0021] Figure 2 This is a schematic diagram of the puncture device provided in the embodiments of this application in its second state.

[0022] Figure 3 for Figure 2 An exploded view of the puncture device shown.

[0023] Figure 4 This is a schematic diagram of the positioning lines provided in an embodiment of this application.

[0024] Figure 5 for Figure 2 A cross-sectional view of the puncture device shown.

[0025] Figure 6 for Figure 5 An enlarged view of region A in the puncture device shown.

[0026] Figure 7 for Figure 3 A schematic diagram of the puncture component in the puncture device shown.

[0027] Figure 8 for Figure 2 A schematic diagram of the puncture device shown from another perspective.

[0028] Figure 9 for Figure 8 A schematic diagram of the second handle in the puncture device shown.

[0029] Figure 10 for Figure 8 A schematic diagram of the pusher block in the puncture device shown.

[0030] Explanation of reference numerals in the attached figures:

[0031] Puncture device-1; Puncture assembly-10; First handle-110; Puncture needle-120; Needle body-121; Indicator-122; Sliding member-130; Pushing assembly-20; Second handle-210; Pushing member-220; Pushing needle core-221; Pushing block-222; Outer block-2221; Connecting body-2222; Inner block-2223; Positioning assembly-30; Positioning anchor-310; Positioning line-320; Line body-321; Imaging wire-322; Connecting post-330; First post-331; Second post-332; Slide rail-X; Inner track-X1; Track opening-X2; First bayonet-X3; Second bayonet-X4; First end face-M1; Second end face-M2. Detailed Implementation

[0032] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0033] In this document, references to "embodiment" or "implementation" mean that a particular feature, structure, or characteristic described in connection with an embodiment or implementation may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0034] Please refer to Figures 1 to 3 This application provides a puncture device 1, which can be used, but is not limited to, in laparoscopic and thoracoscopic surgeries. The puncture device 1 is used to anchor a target object, which can be, but is not limited to, diseased tissue in organs such as the lungs, liver, pancreas, and kidneys, such as lung nodules.

[0035] The puncture device 1 includes: a puncture component 10, a pushing component 20, and a positioning component 30.

[0036] Please refer to Figure 3 The puncture assembly 10 includes a first handle 110 and a puncture needle 120, the puncture needle 120 being fixedly connected to the first handle 110.

[0037] Specifically, the puncture needle 120 has a first end and a second end that are opposite to each other. The first end is a relatively sharp free end (i.e., the needle tip). The second end is fixed to the first handle 110, and the fixing method can be, but is not limited to, interference fit, welding, bonding, etc. The puncture needle 120 has a first cavity that extends from the first end to the second end; that is, the puncture needle 120 is a hollow tube.

[0038] Please refer to Figure 3 The pushing component 20 includes a second handle 210 and a pushing member 220, the pushing member 220 being slidably connected to the second handle 210. The second handle 210 is connected to the first handle 110, and the pushing member 220 includes a pushing needle core 221, the pushing needle core 221 being inserted into the interior of the puncture needle 120. The first handle 110 and the second handle 210 can be detachably connected (e.g., threaded connection, snap-fit, etc.) or non-detachably connected (e.g., welded, interference fit, etc.).

[0039] Specifically, the pusher 220 also includes a pusher block 222, which is slidably disposed on the second handle 210. The pusher needle core 221 has a third end and a fourth end facing away from each other. The third end is a free end, and the fourth end is fixed to the pusher block 222. The fixing method can be, but is not limited to, interference fit, welding, bonding, etc. The pusher block 222 can slide along the length direction of the second handle 210. During the sliding process, the length of the pusher needle core 221 extending out of the second handle 210 changes. At least a portion of the pusher needle core 221 passes through the first cavity of the puncture needle 120. When the pusher block 222 slides relative to the second handle 210, the pusher needle core 221 moves within the first cavity along the length direction of the puncture needle 120. The pusher needle core 221 has a second cavity that extends from the third end to the fourth end; that is, the pusher needle core 221 is a hollow tube.

[0040] Please refer to Figure 3The positioning component 30 includes a positioning anchor 310 and a positioning line 320, with the positioning anchor 310 fixedly connected to the positioning line 320. The positioning line 320 is inserted inside the push needle core 221 and can be excited to generate fluorescence. The positioning anchor 310 is located inside the puncture needle 120. The positioning anchor 310 can be pushed to the outside of the puncture needle 120 by the push needle core 221 to anchor to the target object.

[0041] Specifically, the positioning anchor 310 is used to anchor the puncture needle 120 after the push needle core 221 has been pushed out, onto the target object (such as lung lesion tissue) to facilitate subsequent surgical procedures on the target object; that is, the positioning anchor 310 serves to locate the target object. The positioning line 320 passes through the second cavity of the push needle core 221, and at least a portion of the positioning line 320 extends from the end of the second handle 210 away from the positioning anchor 310. This positioning line 320 can fluoresce under the illumination of a specific light source (such as a fluorescence exciter with an excitation wavelength of 785nm to 820nm), i.e., the positioning line 320 is fluorescently visualized. This allows medical personnel to locate the positioning anchor 310 based on the fluorescent positioning line 320, thereby identifying the anchored target object; that is, the positioning line 320 guides medical personnel to locate the positioning anchor 310.

[0042] The puncture device 1 has a first state (such as...) Figure 1 (as shown) and the second state (as shown) Figure 2 (As shown). When the puncture device 1 is in the first state, the positioning anchor 310 is located outside the second cavity of the push needle core 221 and inside the first cavity of the puncture needle 120. This first state can be understood as the initial state of the puncture device 1 before it is used. When the puncture device 1 is in the second state, the positioning anchor 310 is located outside the puncture needle 120. This second state can be understood as the state after the puncture device 1 is used. The process of changing from the first state to the second state is achieved by the push component 20 pushing against the positioning component 30. That is, during this process, the push needle core 221 moves along the push direction (the direction from the fourth end to the third end; please refer to this for a description of the push direction below). The length of the push needle core 221 extending out of the second handle 210 increases, thereby causing the push needle core 221 to push against the positioning anchor 310, so that the positioning anchor 310 moves from the inside of the puncture needle 120 to the outside of the puncture needle 120.

[0043] To illustrate with an example scenario, if it is necessary to anchor the positioning anchor 310 to the lesion tissue in the lung, the operation can be as follows: First, use the puncture needle 120 of the puncture assembly 10 to puncture through the skin to the edge of the lesion tissue in the lung (at this time, the puncture device 1 is in the first state). Then, push the push block 222 of the pusher 220 to drive the push needle core 221 to move (at this time, the puncture device 1 gradually changes from the first state to the second state). The moving push needle core 221 pushes the positioning anchor 310 against the outside of the puncture needle 120 (at this time, the puncture device 1 is in the second state). After the positioning anchor 310 comes out from inside the puncture needle 120, it is anchored to the lesion tissue in the lung. Finally, the puncture needle 120 is pulled out of the body, thus completing the positioning of the lesion tissue in the lung. When subsequent surgical procedures are required on the anchored lesion tissue, a specific light source can be used to irradiate the positioning line 320, causing the positioning line 320 to be excited and produce fluorescence. Since the positioning line 320 is always connected to the positioning anchor 310, medical personnel can locate the positioning anchor 310 based on the fluorescent positioning line 320, thereby quickly and accurately determining the location of the lesion tissue.

[0044] The positioning anchor 310 can be a shape memory alloy (SMA), such as a nickel-titanium alloy. When the positioning anchor 310 is located inside the puncture needle 120, it is straight or approximately straight. When the positioning anchor 310 extends outside the puncture needle 120 and the temperature rises, it bends into a preset shape. The preset shape of the bent positioning anchor 310 can be, but is not limited to, a Q-shape (e.g., Figure 2 (As shown), J-shaped, U-shaped, spiral, etc. Generally speaking, the internal temperature (such as the temperature at the lesion site) is higher than the external ambient temperature. It can be understood that when the positioning anchor 310 reaches the lesion location and extends beyond the puncture needle 120, due to the increased ambient temperature, the positioning anchor 310 will automatically bend, thereby grasping the lesion tissue and anchoring it to it. Therefore, using a shape memory alloy for the positioning anchor 310 can facilitate anchoring to the lesion tissue.

[0045] For example, the positioning anchor 310 may be bent into a preset shape, i.e., the temperature limit is zero degrees Celsius. When the positioning anchor 310 extends outside the puncture needle 120 and the ambient temperature of the positioning anchor 310 is greater than zero degrees Celsius, the positioning anchor 310 bends into the preset shape. When the positioning anchor 310 is located inside the puncture needle 120, if the ambient temperature is greater than zero degrees Celsius, the positioning anchor 310 is constrained by the puncture needle 120 and remains straight or approximately straight.

[0046] Please refer to Figure 4The positioning line 320 may include a line body 321 and a radiopaque wire 322. The line body 321 is capable of generating fluorescence, and the radiopaque wire 322 is disposed inside the line body 321. The line body 321 is a wire dyed with a fluorescent dye, which may be, but is not limited to, indocyanine green (ICG). Wire dyed with indocyanine green will exhibit a bright green color under specific light source excitation. The material of the line body 321 may be nylon (polyamide, PA), ultra-high molecular weight polyethylene (UHMWPE), etc. Under irradiation by a specific light source (such as a fluorescence exciter with an excitation wavelength of 785nm to 820nm), the line body 321 will be excited and generate fluorescence, enabling medical personnel to quickly and accurately locate the positioning anchor 310. The radiopaque wire 322 may be, but is not limited to, nickel-titanium alloy wire, pure titanium wire, stainless steel wire, high-molecular composite barium sulfate wire, etc. The imaging wire 322 is used for imaging under radiation (such as X-rays), allowing medical personnel to determine the position of the positioning anchor 310 based on the imaging wire 322. Thus, the fluorescence imaging of the positioning line 320 and the imaging of the imaging wire 322 together constitute dual imaging, which further ensures that medical personnel can quickly and accurately locate the positioning anchor 310.

[0047] In summary, when the puncture device 1 provided in this application is used in surgery to mark a target object (such as diseased tissue in the lungs), the puncture needle 120 can be inserted through the skin into the target object. Then, the pusher 220 is pushed so that the pusher needle core 221 pushes the positioning anchor 310 out of the puncture needle 120. After the positioning anchor 310 comes out from inside the puncture needle 120, it can be anchored to the target object, thereby completing the positioning process. Understandably, when subsequent surgery is needed on the anchored target object, medical personnel first need to find the location of the positioning anchor 310. However, the positioning anchor 310 and the positioning line 320 are small and thin, which will be inconvenient for medical personnel to find. Regarding the puncture device 1 provided in this application, when surgery is subsequently required on the anchored target, a specific light source can be used to irradiate the positioning line 320, causing the positioning line 320 to be excited and produce fluorescence. Since the positioning line 320 is always connected to the positioning anchor 310, medical personnel can locate the positioning anchor 310 based on the fluorescent positioning line 320, thereby quickly and accurately determining the location of the target. Therefore, the fluorescent positioning line 320 in this application plays a role in guiding medical personnel to quickly and accurately determine the location of the positioning anchor 310.

[0048] Please refer to Figure 5 and Figure 6The positioning component 30 also includes a connecting post 330, which is columnar and can be approximately cylindrical, triangular, or quadrangular. The connecting post 330 connects the positioning anchor 310 and the positioning line 320; that is, one end of the connecting post 330 is connected to the positioning anchor 310, and the other end is connected to the positioning line 320. The material of the connecting post 330 can be, but is not limited to, aluminum, copper, shape memory alloy, or plastic. The positioning anchor 310 and the connecting post 330 can be an integral structure or a separate structure; no limitation is made here. The push needle core 221 can push the positioning anchor 310 by abutting against the connecting post 330. In other words, when the push needle core 221 moves in the pushing direction, it pushes against the connecting post 330, which in turn pushes the positioning anchor 310 out of the puncture needle 120.

[0049] It should be noted that during the process of anchoring the positioning anchor 310 to the target object, the shape of the connecting post 330 may remain unchanged or change. For example, if the connecting post 330 is made of materials such as aluminum or copper, its shape may remain unchanged; if the connecting post 330 is made of shape memory alloy, its shape will change accordingly due to temperature.

[0050] Please refer to Figure 6 The connecting post 330 includes a first post 331 and a second post 332 connected together. The first post 331 has a first end face M1, and the second post 332 protrudes from the first end face M1. The second post 332 is located inside the push needle core 221, and one end of the second post 332 away from the first end face M1 is connected to the positioning line 320. The push needle core 221 has a second end face M2, at least a portion of which faces the first end face M1. That is, the orthographic projection of the second end face M2 onto the first end face M1 at least partially falls within the area of ​​the first end face M1. With this configuration, when the push needle core 221 moves in the pushing direction, the second end face M2 of the push needle core 221 will push against the first end face M1 of the first post 331, thereby pushing the positioning anchor 310 out of the puncture needle 120. It should be noted that when the puncture device 1 is in the first state, the first end face M1 and the second end face M2 can be attached together or separated from each other.

[0051] The first column 331 and the second column 332 can both be cylinders, triangular prisms, square prisms, etc. Taking the first column 331 and the second column 332 as cylinders as an example: the diameter of the first column 331 is the first dimension, the diameter of the second column 332 is the second dimension, and the diameter of the second cavity of the push needle core 221 is the third dimension. The first dimension is larger than the second dimension, the second dimension is smaller than the third dimension, and the third dimension is smaller than the first dimension. It can be understood that the first dimension being larger than the second dimension allows the first column 331 and the second column 332 to together form a stepped structure; the second dimension being smaller than the third dimension allows the second column 332 to be inserted into the push needle core 221; and the third dimension being smaller than the first dimension allows the push needle core 221 to abut against the aforementioned stepped structure.

[0052] Figure 5 The connecting post 330 shown is merely an example; of course, the connecting post 330 can also adopt other structures, for example, in Figure 5 Based on the connecting column 330 structure shown, the second column 332 is removed, and the positioning line 320 is directly connected to the first end face M1 of the first column 331. Other feasible connecting column 330 structures will not be described in detail here.

[0053] Please refer to Figure 7 The puncture assembly 10 further includes a slider 130, which is slidably fitted around the outer periphery of the puncture needle 120, meaning that the slider 130 can slide along the length of the puncture needle 120. The slider 130 serves to indicate the puncture depth during the puncture process. Specifically, the location of the lesion may differ for each patient, and patients may vary in body size; therefore, the puncture depth of the puncture needle 120 will not be the same. In this embodiment, the slider 130 is provided on the puncture needle 120, so the required theoretical puncture depth can be determined before the puncture operation. Then, the slider 130 is slid to the position corresponding to the theoretical puncture depth. This helps ensure that medical personnel understand the actual puncture depth during the puncture process, thus avoiding punctures that are too deep or too shallow.

[0054] For example: Assuming the distance from the skin to the lesion is the first distance, the theoretical puncture depth is set to the first distance. Based on this first distance, the medical staff slides the slider 130 to the target position on the puncture needle 120. The distance from the target position to the first end (i.e., the needle tip) of the puncture needle 120 is the second distance, which is equal to the first distance. During the process of the medical staff inserting the puncture needle 120 into the body, if the skin just touches the slider 130, it indicates that the needle tip of the puncture needle 120 has just reached the lesion, and the puncture is stopped.

[0055] It should be noted that in actual puncture applications, the distance from the slider 130 to the first end (i.e., the needle tip) of the puncture needle 120 can be exactly equal to the theoretical puncture depth, or greater than the theoretical puncture depth, or less than the theoretical puncture depth, depending on the specific requirements.

[0056] Please refer to Figure 7 The puncture needle 120 includes a needle body 121 and a plurality of indicator portions 122, which are spaced apart along the length of the needle body 121. Each indicator portion 122 protrudes from the needle body 121, and a sliding member 130 can slide around the outer periphery of any one of the indicator portions 122, and the sliding member 130 can be sleeved and fixed around the outer periphery of any one of the indicator portions 122.

[0057] Specifically, the needle body 121 is the main body of the puncture needle 120 with a first cavity. The indicator 122 is a protrusion on the needle body 121, with each indicator 122 arranged around the needle body 121, i.e., the indicator 122 is a ring-shaped protrusion. The number of indicator 122 can be 2, 3, 4, 5, 6, etc. The spacing between adjacent indicator 122 can be the same or different. It can be understood that each indicator 122 is equivalent to a dimensional scale, allowing medical personnel to know the distance from each indicator 122 to the first end (i.e., the needle tip) of the puncture needle 120, and to move the slider 130 to the appropriate indicator 122 to match the theoretical puncture depth. Furthermore, by having the indicator 122 protrude from the needle body 121, the slider 130 forms a fixed fit with the indicator 122, thus remaining stationary at the indicator 122 and preventing automatic slippage. In other words, since the indicator 122 protrudes from the needle body 121, the outer diameter of the indicator 122 is definitely larger than the outer diameter of the needle body 121. This creates frictional resistance during the sliding process of the slider 130 on the indicator 122. Even if the puncture needle 120 is in a vertical position, the slider 130 will not automatically slide down under gravity, which could interfere with the puncture process. If the position of the slider 130 needs to be adjusted, the medical staff can move the slider 130 along the length of the needle body 121, and the moving force should be greater than the frictional resistance from the indicator 122. This will allow the slider 130 to slide on the indicator 122, and then move the slider 130 to the outer periphery of the next indicator 122. The outer diameter of the indicator 122 can be equal to the aperture of the slider 130, and the outer diameter of the needle body 121 is smaller than the aperture of the slider 130. In this way, the slider 130 can slide easily on the needle body 121. When the slider 130 slides onto the indicator 122, its sliding resistance increases, and the slider 130 can then stay on the indicator 122.

[0058] Please refer to Figure 8The pusher 220 further includes a pusher block 222, which is fixedly connected to the pusher needle core 221. The connection method can be, but is not limited to, welding, bonding, or interference fit. The second handle 210 is provided with a slide rail X, and the pusher block 222 is slidably disposed within the slide rail X. The pusher block 222 is at least partially exposed outside the second handle 210, facilitating its movement by medical personnel. The slide rail X extends along the length of the second handle 210. When medical personnel push the pusher block 222 towards the tip of the puncture needle 120, the pusher block 222 causes the pusher needle core 221 to move along the extension direction of the puncture needle 120, thereby pushing the positioning anchor 310 against the outside of the puncture needle 120. Therefore, medical personnel can easily push the pusher block 222 to extend the positioning anchor 310, simplifying the operation and facilitating the positioning of the target object.

[0059] Please refer to Figure 9 and Figure 10 The slide rail X includes an inner rail X1 and a rail opening X2. The inner rail X1 is located inside the second handle 210. The rail opening X2 passes through one side of the second handle 210 and connects to the inner rail X1. The push block 222 includes an outer block 2221, a connecting body 2222, and an inner block 2223. The inner block 2223 is connected to the push needle core 221 and located in the inner rail X1. The outer block 2221 is located outside the second handle 210. The connecting body 2222 connects the outer block 2221 and the inner block 2223 and is located in the rail opening X2.

[0060] Specifically, the inner block 2223 can be roughly cylindrical, and the inner track X1 can be roughly cylindrical cavity. The inner block 2223 is slidably mounted on the inner track X1 and slidably engages with the second handle 210. The outer block 2221 is located outside the second handle 210 and is mainly used for pushing by medical personnel. The connecting body 2222 serves as a connector, with its opposite ends connected to the inner block 2223 and the outer block 2221, respectively. The connecting body 2222 is located within the track opening X2, which also provides a certain degree of limitation on the connecting body 2222 in the circumferential direction of the second handle 210, preventing the connecting body 2222 from having an excessively large deflection range in the circumferential direction, which would be detrimental to pushing by medical personnel. For example, if the width of the track opening X2 is 2.5 mm and the thickness of the connecting body 2222 is 2 mm, then the connecting body 2222 will only have a deflection range of 0.5 mm.

[0061] Optional, please refer to Figure 9 and Figure 10The second handle 210 is further provided with a first latch X3, which is located at the end of the second handle 210 away from the first handle 110. The first latch X3 connects to the track opening X2 and passes through one side of the second handle 210 to connect to the inner track X1. The first latch X3 can accommodate the connecting body 2222, that is, the connecting body 2222 can enter the first latch X3 from the track opening X2. It can be understood that since the first latch X3 is located at the end of the second handle 210 away from the first handle 110, the connecting body 2222 can be placed in the first latch X3 before the positioning anchor 310 is pushed out. This restricts the degree of freedom of the connecting body 2222 in the length direction of the second handle 210, thus preventing the positioning anchor 310 from being pushed out prematurely and affecting the puncture positioning effect.

[0062] Optional, please refer to Figure 9 and Figure 10 The second handle 210 is also provided with a second latch X4, which is located at one end of the second handle 210 near the first handle 110. The second latch X4 connects to the track opening X2 and extends through one side of the second handle 210 to connect to the inner track X1. The second latch X4 can accommodate the connecting body 2222, that is, the connecting body 2222 can enter the second latch X4 from the track opening X2. It can be understood that since the second latch X4 is located at one end of the second handle 210 near the first handle 110, after the positioning anchor 310 is pushed out, the connecting body 2222 can be placed in the second latch X4. This restricts the degree of freedom of the connecting body 2222 in the length direction of the second handle 210, so as to prevent the push block 222 from moving and affecting the puncture effect.

[0063] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application, and such improvements and refinements are also considered to be within the protection scope of this application.

Claims

1. A puncture device (1), characterized in that, The puncture device (1) includes: A puncture assembly (10) includes a first handle (110) and a puncture needle (120), wherein the puncture needle (120) is fixedly connected to the first handle (110); A push assembly (20) comprising a second handle (210) and a pusher (220), the pusher (220) being slidably connected to the second handle (210), the second handle (210) being connected to the first handle (110), the pusher (220) comprising a pusher needle core (221), the pusher needle core (221) being inserted into the interior of the puncture needle (120); and The positioning component (30) includes a positioning anchor (310) and a positioning line (320). The positioning anchor (310) is fixed to the positioning line (320). The positioning line (320) is inserted inside the push needle core (221), and the positioning line (320) can be excited to generate fluorescence. The positioning anchor (310) is located inside the puncture needle (120). The positioning anchor (310) can be pushed to the outside of the puncture needle (120) by the push needle core (221) to anchor to the target object.

2. The puncture device (1) as described in claim 1, characterized in that, The positioning anchor (310) is a shape memory alloy.

3. The puncture device (1) as described in claim 1, characterized in that, The positioning line (320) includes a line body (321) and a developing filament (322). The line body (321) can generate fluorescence, and the developing filament (322) is disposed inside the line body (321).

4. The puncture device (1) as described in claim 1, characterized in that, The positioning component (30) further includes a connecting post (330) that connects the positioning anchor (310) and the positioning line (320), and the push needle core (221) can push the positioning anchor (310) by abutting against the connecting post (330).

5. The puncture device (1) as described in claim 4, characterized in that, The connecting post (330) includes a first post (331) and a second post (332) connected to each other. The first post (331) has a first end face (M1), and the second post (332) protrudes from the first end face (M1). The second post (332) is disposed inside the push needle core (221) and connected to the positioning line (320). The push needle core (221) has a second end face (M2), and at least a portion of the second end face (M2) faces the first end face (M1).

6. The puncture device (1) as described in claim 1, characterized in that, The puncture assembly (10) further includes a slider (130), which is slidably sleeved on the outer periphery of the puncture needle (120).

7. The puncture device (1) as described in claim 6, characterized in that, The puncture needle (120) includes a needle body (121) and a plurality of indicator portions (122). The plurality of indicator portions (122) are spaced apart along the length direction of the needle body (121). The indicator portions (122) protrude from the needle body (121). The sliding member (130) can slide on the outer periphery of any one of the indicator portions (122), and the sliding member (130) can be sleeved and fixed on the outer periphery of any one of the indicator portions (122).

8. The puncture device (1) as described in any one of claims 1 to 7, characterized in that, The pusher (220) also includes a push block (222), which is fixedly connected to the push needle core (221). The second handle (210) is provided with a slide rail (X), and the push block (222) is slidably disposed in the slide rail (X).

9. The puncture device (1) as described in claim 8, characterized in that, The slide rail (X) includes an inner rail (X1) and a rail opening (X2). The inner rail (X1) is located inside the second handle (210), and the rail opening (X2) passes through one side of the second handle (210) and connects to the inner rail (X1). The push block (222) includes an outer block (2221), a connecting body (2222), and an inner block (2223). The inner block (2223) is connected to the push needle core (221) and located in the inner rail (X1). The outer block (2221) is located outside the second handle (210), and the connecting body (2222) is connected between the outer block (2221) and the inner block (2223) and located in the rail opening (X2).

10. The puncture device (1) as described in claim 9, characterized in that, The second handle (210) is also provided with a first bayonet (X3), which is located at the end of the second handle (210) away from the first handle (110). The first bayonet (X3) connects to the track opening (X2) and passes through one side of the second handle (210) to connect to the inner track (X1). The first bayonet (X3) can accommodate the connecting body (2222). And / or, the second handle (210) is further provided with a second latch (X4), the second latch (X4) is provided at one end of the second handle (210) near the first handle (110), the second latch (X4) communicates with the track opening (X2), and the second latch (X4) passes through one side of the second handle (210) to communicate with the inner track (X1), the second latch (X4) can accommodate the connector (2222).

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