Biopsy needle, biopsy kit and biopsy device

Abstract

The invention discloses a biopsy needle, a biopsy kit and a biopsy device, and relates to the technical field of medical instruments.The biopsy needle comprises a puncture tube and a needle head, the puncture tube comprises an outer tube and a puncture head, the outer tube is provided with an assembly channel and a sampling window, and the puncture head is arranged at the front end of the outer tube; a cutting part is arranged at the front end of the inner knife tube, the inner knife tube movably penetrates through the assembling channel, and a gap is formed between the inner knife tube and the inner wall of the assembling channel so as to cut tissue entering the assembling channel through the sampling window; the tissue collector is provided with a collecting cavity, and the rear end of the inner knife tube extends into the collecting cavity; the fluid component is internally provided with a flow channel, part of the fluid component extends into the collecting cavity, the fluid component is provided with an external connector exposed out of the tissue collector, and the external connector is communicated with the flow channel; by moving the fluid component and / or the inner knife tube, the fluid component is in butt joint with or separated from the rear end of the inner knife tube, so that the inner channel of the inner knife tube selectively communicates with the flow channel or the collecting cavity. According to the technical scheme provided by the invention, the complexity of intraoperative liquid injection operation is reduced.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a biopsy needle, a biopsy kit, and a biopsy device. Background Technology

[0002] A biopsy needle is a medical device used for sampling and diagnosing lesions. It is widely used for biopsy of organs such as the thyroid, breast, lung, liver, and kidney to collect samples for pathological analysis or to remove lesions.

[0003] A biopsy needle includes an outer tube, an inner blade tube fitted inside the outer tube, and a tissue collector for collecting tissue. The rear end of the inner blade tube extends into the tissue collector, which is connected to a negative pressure assembly. The front end of the outer tube has a slender and sharp puncture head, and a sampling window is provided on the side wall of the outer tube. After the puncture head is inserted into the tissue to reach the lesion site, the inner blade tube is driven to move axially, causing it to cut off the tissue at the sampling window. Then, the negative pressure assembly provides negative pressure to draw the tissue cut off by the inner blade tube from the inside of the inner blade tube into the tissue collector, thus realizing the sampling operation. The tail end of the biopsy collector has a through hole communicating with the inside of the tissue collector, and a removable plug is installed in the through hole.

[0004] However, with existing biopsy needles, when liquid needs to be injected, the plug needs to be removed, a guide needle inserted, and the liquid injected through the internal channel of the guide needle, which is a complicated operation. Summary of the Invention

[0005] The main objective of this invention is to provide a biopsy needle, biopsy kit, and biopsy device that aims to reduce the complexity of intraoperative fluid injection procedures.

[0006] To achieve the above objectives, the biopsy needle proposed in this invention comprises:

[0007] A puncture tube includes an outer tube and a puncture head. The outer tube has an assembly channel extending along its own axial direction and a sampling window connecting the assembly channel with the external environment. The puncture head is located at the front end of the outer tube. An inner blade tube with a cutting section at its front end is movably inserted through the assembly channel and has a gap with the inner wall of the assembly channel to cut tissue that enters the assembly channel through the sampling window. A tissue collector having a collection chamber, wherein the rear end of the inner blade tube extends into the collection chamber; and A fluid component has an internal flow channel, a portion of which extends into the collection chamber, and the fluid component has an external interface that protrudes from the tissue collector, the external interface being in communication with the flow channel; Specifically, by moving the fluid component and / or the inner knife tube, the fluid component is connected to or separated from the rear end of the inner knife tube, thereby allowing the internal channel of the inner knife tube to selectively connect to either the flow channel or the collection chamber.

[0008] The present invention also proposes a biopsy needle, comprising: A puncture tube includes an outer tube and a puncture head. The outer tube has an assembly channel extending along its own axial direction and a sampling window connecting the assembly channel with the external environment. The puncture head is located at the front end of the outer tube. An inner blade tube with a cutting section at its front end is movably inserted through the assembly channel and has a gap with the inner wall of the assembly channel to cut tissue that enters the assembly channel through the sampling window. The tissue collector has a collection chamber, and the rear end of the inner knife tube extends into the collection chamber; A fluid component, having an internal flow channel, wherein a portion of the fluid component extends into the collection chamber, and the fluid component has an external interface exposed to the tissue collector, the external interface communicating with the flow channel; and An internal valve, built into the collection chamber and having an operating part extending from the tissue collector, is responsive to operation of the operating part to selectively connect the internal channel of the inner blade tube to either the flow channel or the collection chamber.

[0009] In one embodiment, at least one of the puncture tube and the inner knife tube is provided with an energy input electrode, so that at least one of the puncture tube and the inner knife tube forms an output electrode that acts on the target tissue.

[0010] In one embodiment, the biopsy needle further includes a biopsy needle handle fitted over the rear end of the outer tube, and the energy input electrode includes: The first electrode is disposed on the biopsy needle handle and electrically connected to the rear end of the outer tube; A second electrode is disposed on the biopsy needle handle and spaced apart from the first electrode; and An electrical connector is disposed on the outer wall of the outer tube and is insulated from the outer tube; the electrical connector is electrically connected to the second electrode and the puncture head. Through the energy input of the first electrode and the second electrode, the outer tube and the puncture head form a pair of output electrodes that act on the target tissue.

[0011] In one embodiment, the first electrode is an electrode contact, one end of which is disposed inside the biopsy needle handle and connected to the rear end of the outer tube via a wire, and the other end of which extends through the biopsy needle handle to the outside of the biopsy needle handle; and / or, The second electrode is an electrode ring, which is spaced out and sleeved around the outside of the outer tube and electrically connected to the electrical connector; and / or, The electrical connector is a flexible electrical board.

[0012] The present invention also proposes a biopsy kit, comprising: Biopsy needle, wherein the biopsy needle is the biopsy needle described above; A biopsy handle is connected to the biopsy needle, and the biopsy handle is provided with a drive assembly that is connected to the inner blade tube.

[0013] The present invention also proposes a biopsy kit, comprising: Biopsy needle, wherein the biopsy needle is the biopsy needle described above; The biopsy handle is connected to the biopsy needle. The biopsy handle is equipped with a drive assembly that is connected to the inner blade tube. The biopsy handle is equipped with an energy input interface, and the energy input interface is electrically connected to the energy input electrode so that the energy input through the energy input interface can reach the output electrode to act on the target tissue.

[0014] The present invention also proposes a biopsy device, comprising: Biopsy needle, wherein the biopsy needle is the biopsy needle described above; The negative pressure assembly includes a negative pressure source, a first pipeline assembly, and a first valve. The negative pressure source is connected to the collection chamber of the tissue collector through the first pipeline assembly. The negative pressure source is used to generate negative pressure in the collection chamber. The first valve is disposed on the first pipeline assembly to control the on / off state of the first pipeline assembly. The liquid injection assembly includes a liquid supply source, a second pipeline assembly, and a second valve. The liquid supply source is connected to the flow channel of the tissue collector through the second pipeline assembly. The second valve is located on the second pipeline assembly to control the on / off state of the second pipeline assembly.

[0015] In one embodiment, the biopsy device further includes: The third pipeline assembly is connected to the second pipeline assembly and the collection chamber respectively, and the connection position of the third pipeline assembly on the second pipeline assembly is located on the connecting pipe between the second valve and the fluid component; A third valve is provided on the third pipeline assembly and is used to control the on / off state of the third pipeline assembly; The fourth valve is located on the connecting pipe and is used to control the opening and closing of the connecting pipe.

[0016] The present invention also proposes a biopsy device, comprising: Biopsy needle, wherein the biopsy needle is the biopsy needle described above; The negative pressure assembly includes a negative pressure source, a first pipeline assembly, and a first valve. The negative pressure source is connected to the collection chamber of the tissue collector through the first pipeline assembly. The negative pressure source is used to generate negative pressure in the collection chamber. The first valve is disposed on the first pipeline assembly to control the on / off state of the first pipeline assembly. The reversing valve is provided with a first interface, a second interface and a third interface, wherein the third interface is used for liquid injection; A connecting pipe connects the flow channel of the fluid component to the first interface; The third tubing assembly connects the collection chamber of the tissue collector to the second interface.

[0017] In one embodiment, it further includes: A biopsy handle is connected to the biopsy needle. The biopsy handle is provided with a drive assembly that is connected to the inner knife tube. The biopsy handle is provided with an energy input interface, and the energy input interface is used to electrically connect at least one of the puncture tube and the inner knife tube so that the energy input through the energy input interface can act on the target tissue through at least one of the puncture tube and the inner knife tube. An energy output device is provided with an energy output interface, which is detachably adapted to and connected to the energy input interface.

[0018] The biopsy needle in this invention includes a puncture tube, an inner blade tube, a tissue collector, and a fluid component. The puncture tube includes an outer tube and a puncture head. By moving either or both of the fluid component and the inner blade tube simultaneously, the fluid component can be docked or separated from the rear end of the inner blade tube. This allows the internal channel of the inner blade tube to selectively communicate with the flow channel of the fluid component or with the collection chamber of the tissue collector. During biopsy sampling, the front end of the fluid component separates from the rear end of the inner blade tube, leaving the rear end of the inner blade tube open and communicating with the collection chamber of the tissue collector. Under external negative pressure (i.e., the negative pressure component in the biopsy device), the excised tissue moves from the end of the inner blade tube near the puncture head towards the rear end of the biopsy needle, entering the collection chamber connected to the rear end of the inner blade tube, thus completing the entire cutting and sampling process. When fluid needs to be injected into the biopsy site, such as for continuous injection of saline solution, the front end of the fluid component connects to the rear end of the inner blade tube. The interior of the inner blade tube is connected to the interior of the fluid component, while the inner blade tube is separated from the collection chamber of the tissue collector. Liquid can be injected into the flow channel of the fluid component through its external interface, and then reaches the biopsy site through the internal channel of the inner blade tube, thus realizing the fluid injection function of the biopsy needle. The biopsy needle in this design has both biopsy sampling and fluid injection capabilities, expanding its application scenarios and adaptability. Switching between the biopsy and injection functions requires no disassembly or reassembly of the plug and guide needle on the tissue collector; only the fluid component and / or the inner blade tube need to be moved, reducing the number of injection steps and improving the ease of use of the biopsy needle. Attached Figure Description

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

[0020] Figure 1 This is a cross-sectional view of an embodiment of the biopsy needle provided by the present invention; Figure 2 This is a schematic diagram of the structure of an embodiment of the biopsy needle provided by the present invention; Figure 3 Partial cross-sectional view of an embodiment of the biopsy needle provided by the present invention. Figure 1 ; Figure 4 Partial cross-sectional view of an embodiment of the biopsy needle provided by the present invention. Figure 2 ; Figure 5 Partial cross-sectional view of an embodiment of the biopsy needle provided by the present invention. Figure 3 ; Figure 6 Partial cross-sectional view of an embodiment of the biopsy needle provided by the present invention. Figure 4 ; Figure 7 Partial cross-sectional view of an embodiment of the biopsy needle provided by the present invention. Figure 5 ; Figure 8 for Figure 7 A magnified view of a section at point A in the middle; Figure 9 A schematic diagram of the biopsy handle of the biopsy kit provided by the present invention; Figure 10 This is a partial structural schematic diagram of the first embodiment of the biopsy device provided by the present invention; Figure 11 This is a schematic diagram of the structure of the first embodiment of the biopsy device provided by the present invention; Figure 12 This is a schematic diagram of the structure of a second embodiment of the biopsy device provided by the present invention; Figure 13 This is a schematic diagram of the biopsy sampling state in the second embodiment of the biopsy device provided by the present invention. Figure 1 ; Figure 14 This is a schematic diagram of the biopsy sampling state in the second embodiment of the biopsy device provided by the present invention. Figure 2 ; Figure 15 This is a schematic diagram of the radiofrequency ablation state in a second embodiment of the biopsy device provided by the present invention; Figure 16 This is a schematic diagram of the plasma ablation state in the second embodiment of the biopsy device provided by the present invention; Figure 17 A schematic diagram of the tissue sample cleaning state in a second embodiment of the biopsy device provided by the present invention; Figure 18 This is a schematic diagram of the drug replenishment state in a second embodiment of the biopsy device provided by the present invention; Figure 19 This is a partial structural cross-sectional view of another embodiment of the biopsy needle provided by the present invention.

[0021] Explanation of icon numbers: 100. Biopsy needle; 110. Outer tube; 111. Sampling window; 120. Puncture head; 130. Inner blade tube; 140. Tissue collector; 1401. Collection chamber; 1402. First connecting port; 1403. Second connecting port; 141. Collection box; 142. Filter structure; 150. Biopsy needle handle; 161. First electrode; 162. Second electrode; 163. Electrical connector; 170. Fluid component; 180. Built-in valve; 181. Operating part; 200. Biopsy handle; 201. Third electrode; 202. Fourth electrode; 310. Negative pressure source; 320. First piping assembly; 330. First valve; 340. Waste collection assembly; 400. Energy output equipment; 500. Injection assembly; 510. Liquid supply source; 520. Second pipeline assembly; 521. Connecting pipe; 530. Second valve; 540. Syringe; 610. Third valve; 620. Fourth valve; 630. Third piping assembly; 700. Reversing valve.

[0022] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0023] 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 a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0024] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0025] In this invention, unless otherwise explicitly specified and limited, the terms "connection" and "fixed" should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; "connection" can mean a mechanical connection or an electrical connection, a direct connection or an indirect connection through an intermediate medium, or a connection within two components or an interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0026] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0027] This invention proposes a biopsy needle.

[0028] Please see Figures 1 to 4 , Figure 1 This is a cross-sectional view of an embodiment of the biopsy needle provided by the present invention. Figure 2 This is a schematic diagram of the structure of an embodiment of the biopsy needle provided by the present invention. Figure 3 Partial cross-sectional view of an embodiment of the biopsy needle provided by the present invention. Figure 1 , Figure 4 Partial cross-sectional view of an embodiment of the biopsy needle provided by the present invention. Figure 2 .

[0029] In one embodiment of the present invention, the biopsy needle 100 includes: The puncture tube includes an outer tube 110 and a puncture head 120. The outer tube 110 is provided with an assembly channel extending along its own axial direction and a sampling window 111 connecting the assembly channel with the external environment. The puncture head 120 is located at the front end of the outer tube 110. The inner blade tube 130 has a cutting section at the front end. The inner blade tube 130 is movably inserted through the assembly channel and has a gap with the inner wall of the assembly channel, so as to cut the tissue that enters the assembly channel through the sampling window 111. Tissue collector 140, having a collection chamber 1401, with the rear end of inner blade tube 130 extending into the collection chamber 1401; and The fluid component 170 has an internal flow channel, and part of the fluid component 170 extends into the collection chamber 1401. The fluid component 170 also has an external interface that exposes the tissue collector 140 and communicates with the flow channel. Specifically, by moving the fluid component 170 and / or the inner knife tube 130, the fluid component 170 is connected to or separated from the rear end of the inner knife tube 130, thereby allowing the internal channel of the inner knife tube 130 to selectively connect to either the flow channel or the collection chamber 1401.

[0030] The biopsy needle 100 in the technical solution of this invention includes a puncture tube, an inner blade tube 130, a tissue collector 140, and a fluid component 170. The puncture tube includes an outer tube 110 and a puncture head 120. By moving either or both of the fluid component 170 and the inner blade tube 130 simultaneously, the fluid component 170 can be docked or separated from the rear end of the inner blade tube 130, thereby selectively communicating the internal channel of the inner blade tube 130 with the flow channel of the fluid component 170 or with the collection chamber 1401 of the tissue collector 140. During biopsy sampling, refer to... Figure 4 The fluid component 170 is separated from the rear end of the inner blade tube 130, with the rear end of the inner blade tube 130 open and connected to the collection chamber 1401 of the tissue collector 140. Under external negative pressure (i.e., the negative pressure component in the biopsy device), the cut tissue moves from the end of the inner blade tube 130 near the puncture head 120 towards the rear end of the biopsy needle 100, entering the collection chamber 1401 connected to the rear end of the inner blade tube 130, thus completing the entire cutting and sampling process. When it is necessary to inject fluid into the biopsy site, such as continuously injecting saline into the biopsy site, refer to... Figure 3 The front end of the fluid component 170 is connected to the rear end of the inner blade tube 130, and the interior of the inner blade tube 130 is connected to the interior of the fluid component 170. The inner blade tube 130 is isolated from the collection chamber 1401 of the tissue collector 140. Liquid can be injected into the flow channel of the fluid component 170 through the external interface of the fluid component 170, and then reach the biopsy site through the internal channel of the inner blade tube 130, realizing the injection function of the biopsy needle 100. The biopsy needle 100 in this solution has both biopsy sampling function and biopsy site injection function, which increases the application scenarios and adaptability of the biopsy needle 100. When switching between the biopsy function and the injection function, there is no need to disassemble the plug and guide needle on the tissue collector 140; only the fluid component 170 and / or the inner blade tube 130 need to be moved, which reduces the number of injection operation steps and improves the ease of use of the biopsy needle 100.

[0031] In one embodiment, at least one of the puncture tube and the inner knife tube 130 is provided with an energy input electrode, so that at least one of the puncture tube and the inner knife tube 130 forms an output electrode that acts on the target tissue.

[0032] Thus, when the energy input electrode is energized, if the front end of the fluid component 170 is in a state of docking with the rear end of the inner blade tube 130, energy can be output to the tissue while continuously supplying ionic liquids such as physiological saline to achieve plasma ablation; when the energy input electrode is energized, if the inner blade tube 130 and the fluid component 170 are in a state of separation, only electrocoagulation / electrotomy ablation can be performed on the tissue, so that the entire biopsy system can not only achieve sampling, but also electrocoagulation / electrotomy ablation and plasma ablation, making it applicable to a wider range of surgical scenarios. It is worth mentioning that the current frequency corresponding to electrocoagulation / electrosurgical ablation is usually higher than that of plasma ablation. The two are suitable for different surgical needs. For example, electrocoagulation / electrosurgical ablation is more suitable for the central part of relatively large tumors, and the depth of the effect on the tissue is deeper. On the other hand, plasma ablation is more suitable for ablation at the boundary of the tumor or for ablation of relatively small tissues, reducing damage to normal tissues. If the biopsy needle with output electrode as described in the invention is used for biopsy sampling, multiple surgical methods can be achieved in a single operation using only a single biopsy needle, avoiding unnecessary damage caused by multiple punctures during the use of multiple surgical instruments.

[0033] In embodiments of the present invention, an energy input electrode can be separately installed on the puncture tube. This energy input electrode can be connected to the energy output device 400 in the biopsy apparatus, so that energy is conducted to the puncture tube through the energy input electrode, and then released to the surrounding target tissue by the puncture tube as the output electrode. The target tissue is ablated by the thermal effect of the released energy. On the one hand, the puncture tube realizes the electrocautery function, releasing energy during the insertion of the puncture head 120 into the tissue, reducing puncture resistance and improving puncture efficiency; on the other hand, the puncture tube realizes the radiofrequency ablation function, releasing energy after the puncture head 120 penetrates the lesion tissue, causing the lesion tissue to shrink, disappear or necrose, achieving the effect of eliminating the lesion tissue; and on yet another hand, the puncture tube realizes the electrocoagulation hemostasis function, using the thermal effect to dehydrate and coagulate the tissue cells around the puncture head 120 and the outer tube 110, reducing intraoperative bleeding and improving surgical safety. In other words, the biopsy needle 100 in this embodiment can provide multiple functions such as biopsy sampling, fluid injection and drug replenishment at the biopsy site, electrocautery, electrocoagulation, and radiofrequency ablation (such as high-frequency ablation and plasma ablation), which expands the application scenarios of the biopsy needle 100. It reduces the number of steps required to switch between different devices during the operation, which is beneficial to improving the efficiency of the operation and reducing the overall cost of medical equipment.

[0034] Alternatively, an energy input electrode can be separately installed on the inner blade tube 130, so that energy is conducted to the inner blade tube 130 through the energy input electrode, and then released to the target tissue at the sampling window 111 by the inner blade tube 130 as the output electrode. The target tissue is ablated by the thermal effect of the released energy. On the one hand, the inner blade tube 130 realizes the electro-cutting function, releasing energy during the process of the inner blade tube 130 cutting the tissue, reducing the cutting resistance and improving the cutting efficiency; on the other hand, the inner blade tube 130 realizes the electrocoagulation hemostasis function, causing the tissue cells at the wound site cut by the inner blade tube 130 to dehydrate and coagulate through the thermal effect, reducing intraoperative bleeding and improving surgical safety.

[0035] Of course, energy input electrodes can also be set on both the puncture tube and the inner knife tube 130 to further improve the functionality of the biopsy needle 100 and expand its application scenarios. This reduces the number of steps required to switch between different devices during surgery, which is beneficial to improving surgical efficiency and reducing the overall cost of medical equipment.

[0036] In one embodiment, the biopsy needle 100 further includes a biopsy needle handle 150 fitted over the rear end of the outer tube 110, and the energy input electrode includes: The first electrode 161 is disposed on the biopsy needle handle 150 and electrically connected to the rear end of the outer tube 110. The second electrode 162 is disposed on the biopsy needle handle 150 and spaced apart from the first electrode 161; and Electrical connector 163 is disposed on the outer wall of outer tube 110 and is insulated from outer tube 110. Electrical connector 163 is electrically connected to second electrode 162 and puncture head 120. Through the energy input of the first electrode 161 and the second electrode 162, the outer tube 110 and the puncture head 120 form a pair of output electrodes that act on the target tissue.

[0037] Combination Figure 6 and Figure 7 In an embodiment of the present invention, the energy input electrode is disposed on the puncture tube, such that the outer tube 110 and the puncture head 120 form a pair of output electrodes acting on the target tissue. When the energy transmission circuit is turned on, the puncture head 120 acts as one electrode, and the outer tube 110 acts as the other electrode, forming a current path between the two electrodes. When energy is transferred between the two electrodes, it passes through the surrounding tissue, thereby achieving ablation of the surrounding tissue. The biopsy needle 100 also includes a biopsy needle handle 150, which is the operating gripping component of the biopsy needle 100. The rear end of the outer tube 110 passes through and is fixed inside the biopsy needle handle 150. (Refer to...) Figure 1 , Figure 2 as well as Figures 5 to 8The energy input electrode includes an electrical connector 163, a first electrode 161, and a second electrode 162. The first electrode 161 and the second electrode 162 are spaced apart on the biopsy needle handle 150, and are physically separated to ensure insulation. The first electrode 161 is directly electrically connected to the rear end of the outer tube 110 via a wire, facilitating the transfer of the energy transmission circuit between the energy output device 400 and the outer tube 110. The second electrode 162 is electrically connected to the puncture head 120 via an electrical connector 163. The electrical connector 163 is located on the outer wall of the outer tube 110 and is insulated from the outer tube 110. This facilitates the transfer of the energy transmission circuit between the energy output device 400 and the puncture head 120, does not occupy the internal space of the assembly channel, avoids interference with the movable inner knife tube 130, and reduces the risk of damage to the inner knife tube 130 and the electrical connector 163.

[0038] Combination Figure 1 , Figure 2 , Figure 9 and Figure 10 Specifically, in this embodiment, the biopsy needle handle 150 can be detachably assembled with the biopsy handle 200 using a method such as plug-in or snap-fit ​​to form a complete handle, facilitating user grip and operation. (Refer to...) Figure 9 A third electrode 201 and a fourth electrode 202 are spaced apart on the biopsy handle 200. The third electrode 201 and the fourth electrode 202 are physically separated to ensure insulation. The energy output device 400 is electrically connected to the third electrode 201 and the fourth electrode 202 respectively via cables. When the biopsy handle 200 is connected to the biopsy needle handle 150, the first electrode 161 and the third electrode 201 are connected, and the second electrode 162 and the fourth electrode 202 are connected, thus forming two energy transmission paths. One path is the energy output device 400, the third electrode 201, the first electrode 161, and the outer tube 110. The other path is the energy output device 400, the fourth electrode 202, the second electrode 162, the electrical connector 163, and the puncture head 120. When the puncture head 120 and part of the outer tube 110 are inserted into the tissue, the two energy transmission paths form a complete closed loop through the tissue around the puncture head 120 and the outer tube 110, so that energy is applied to the surrounding tissue between the puncture head 120 and the outer tube 110.

[0039] In one embodiment, the first electrode 161 is an electrode contact, one end of which is disposed inside the biopsy needle handle 150 and connected to the rear end of the outer tube 110 via a wire, and the other end of which extends through the biopsy needle handle 150 to the outside of the biopsy needle handle 150; and / or, The second electrode 162 is an electrode ring, which is spaced around the outside of the outer tube 110 and electrically connected to the electrical connector 163; and / or, Electrical connector 163 is a flexible electrical board.

[0040] In an embodiment of the present invention, the electrical connector 163 is a flexible plate. One end of the flexible plate is electrically connected to the puncture head 120, and the other end extends to the rear end of the inner blade tube 130 for direct or indirect connection to the energy output device 400. The flexibility of the flexible plate allows it to conform to the outer wall contour of the outer tube 110, and its thinness helps to avoid snagging on surrounding tissues or obstructing the puncture path during the puncture process, ensuring the smoothness of the puncture operation. Specifically, the flexible plate includes a conductive layer, an insulating substrate layer, and a protective layer. The insulating substrate layer is attached to the outer wall of the outer tube 110, achieving fixation while ensuring insulation from the outer tube 110. The conductive layer is attached to the side of the insulating substrate layer away from the outer wall of the outer tube 110 and is responsible for transmitting current. The protective layer covers the outer surface of the conductive layer, protecting the conductive layer and preventing it from being rubbed, scratched, or contaminated with tissue fluid during the puncture process, which could lead to a short circuit. At the same time, it enhances the structural strength and durability of the flexible plate. Specifically, in this embodiment, the flexible electrode is disposed on the outer wall of the outer tube 110 on the side opposite to the sampling window 111, so as to avoid the flexible electrode completely wrapping the outer tube 110 and ensure that energy can be transferred between the outer tube 110 and the puncture head 120 through the tissue.

[0041] In the embodiments of the present invention, the flexible electrode is fixed to the outer wall of the outer tube 110 by adhesive bonding. The installation is simple and the fixation is firm. There is no need to open holes, slots or other structures in the outer tube 110 or the flexible electrode, so as to avoid damaging the strength of the outer tube 110 and not affecting the conductivity of the flexible electrode.

[0042] Reference Figure 5 In an embodiment of the present invention, the first electrode 161 adopts a columnar or convex structure with conductive properties to form an electrode contact. The electrode contact structure is simple, easy to assemble, and occupies little space. One end of the electrode contact is located inside the biopsy needle handle 150 and forms an electrical connection with the rear end of the outer tube 110. The other end extends through the biopsy needle handle 150 to the outside of the handle, forming an exposed mating end for mating with the third electrode 201 of the biopsy handle 200.

[0043] Reference Figure 5 In an embodiment of the present invention, the second electrode 162 adopts an annular conductive structure to form an electrode ring. The electrode ring is spaced around the outside of the outer tube 110, electrically connected to the electrical connector 163, and physically insulated from the outer tube 110. Specifically, the electrode ring is sleeved on the outside of the flexible plate at the rear end of the outer tube 110 and directly welded to the conductive layer of the flexible plate. This structure is compact, easy to install, and has a large contact area, reducing the risk of incomplete or disconnected connections. Furthermore, the insulating substrate layer of the flexible plate separates the electrode ring and the outer tube 110, further ensuring the insulation between the outer tube 110 and the electrode ring.

[0044] Based on the first embodiment of the biopsy needle 100 described above, a second embodiment of the biopsy needle 100 in this application is proposed. In the second embodiment of the biopsy needle 100, the contents that are the same as or similar to those in the first embodiment of the biopsy needle 100 described above can be referred to the above description and will not be repeated hereafter.

[0045] The present invention also proposes a biopsy needle 100, comprising: The puncture tube includes an outer tube 110 and a puncture head 120. The outer tube 110 is provided with an assembly channel extending along its own axial direction and a sampling window 111 connecting the assembly channel with the external environment. The puncture head 120 is located at the front end of the outer tube 110. The inner blade tube 130 has a cutting section at the front end. The inner blade tube 130 is movably inserted through the assembly channel and has a gap with the inner wall of the assembly channel, so as to cut the tissue that enters the assembly channel through the sampling window 111. The tissue collector 140 has a collection chamber 1401, and the rear end of the inner knife tube 130 extends into the collection chamber 1401; The fluid component 170 has an internal flow channel, a portion of which extends into the collection chamber 1401. The fluid component 170 also has an external interface that protrudes from the tissue collector 140 and communicates with the flow channel. The built-in valve 180 is built into the collection chamber 1401 and has an operating part 181 that extends out of the tissue collector 140. The built-in valve 180 is responsive to the operation of the operating part 181 to allow the internal channel of the inner knife tube 130 to selectively connect to either the flow channel or the collection chamber 1401.

[0046] Reference Figure 19 In this embodiment, the biopsy needle 100 includes a puncture tube, an inner blade tube 130, a tissue collector 140, a fluid component 170, and a built-in valve 180. The built-in valve 180 is built into the collection chamber 1401 of the tissue collector 140 and has an operating part 181 extending to the outside of the tissue collector 140. The user controls the built-in valve 180 to switch states by operating the operating part 181, thereby controlling the internal channel of the inner blade tube 130 to either connect to the flow channel of the fluid component 170 or the collection chamber 1401 of the tissue collector 140, that is, switching the sampling function and the injection function of the biopsy needle 100. In this embodiment, it is also not necessary to disassemble the plug and guide needle of the tissue collector 140, which helps to reduce the operation steps and simplify the operation, thereby improving the convenience of operation.

[0047] Combination Figure 1 , Figure 2 , Figure 9 and Figure 10 The present invention also proposes a biopsy kit, comprising: Biopsy needle 100, which is the biopsy needle 100 mentioned above; The biopsy handle 200 is connected to the biopsy needle 100, and the biopsy handle 200 is provided with a drive assembly that is connected to the inner blade tube 130.

[0048] The specific structure of the biopsy needle 100 is as described in the above embodiments. Since this biopsy kit adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, and will not be described in detail here. Among them, the biopsy handle 200 is physically connected to the biopsy needle handle 150 of the biopsy needle 100. A drive component is integrated on the biopsy handle 200. The drive component drives the inner blade tube 130 of the biopsy needle 100, and can transmit the driving force to the inner blade tube 130, causing the inner blade tube 130 to perform a compound motion combining rotation and axial movement to complete the tissue cutting operation.

[0049] Based on the first embodiment of the biopsy kit described above, a second embodiment of the biopsy kit in this application is proposed. In the second embodiment of the biopsy kit, any content that is the same as or similar to that in the first embodiment can be referred to the above description and will not be repeated hereafter.

[0050] The present invention also proposes a biopsy kit, comprising: Biopsy needle 100, which is the biopsy needle 100 mentioned above; The biopsy handle 200 is connected to the biopsy needle 100. The biopsy handle 200 is provided with a drive assembly that is connected to the inner blade tube 130. The biopsy handle 200 is provided with an energy input interface, and the energy input interface is electrically connected to the energy input electrode so that the energy input through the energy input interface can reach the output electrode to act on the target tissue.

[0051] The biopsy kit includes a biopsy handle 200 and a biopsy needle 100 equipped with an energy input electrode. The energy input interface is electrically connected to the energy input electrode of the biopsy needle 100. The energy output device 400 in the biopsy apparatus transmits energy to the energy input electrode on the biopsy needle 100 through the energy input interface on the biopsy handle 200, and then conducts it to the corresponding output electrode to act on the target tissue, thereby enabling the biopsy needle 100 to perform electrocautery, electrocoagulation, and radiofrequency ablation (such as high-frequency ablation and plasma ablation).

[0052] Specifically, in this embodiment, the energy input interface includes the aforementioned third electrode 201 and fourth electrode 202. When the biopsy handle 200 and the biopsy needle handle 150 are physically connected, the first electrode 161 and the third electrode 201 can be connected, and the second electrode 162 and the fourth electrode 202 can be connected. That is, the physical connection between the biopsy handle 200 and the biopsy needle handle 150 and the electrical connection between the energy input interface and the energy input electrode can be achieved simultaneously, reducing the number of operation steps and improving ease of use.

[0053] Reference Figure 10 The present invention also proposes a biopsy device, comprising: Biopsy needle 100, which is the biopsy needle 100 mentioned above; The negative pressure assembly includes a negative pressure source 310, a first tubing assembly 320, and a first valve 330. The negative pressure source 310 is connected to the collection chamber 1401 of the tissue collector 140 through the first tubing assembly 320. The negative pressure source 310 is used to generate negative pressure in the collection chamber 1401. The first valve 330 is provided on the first tubing assembly 320 to control the opening and closing of the first tubing assembly 320. The liquid injection assembly 500 includes a liquid supply source 510, a second pipeline assembly 520, and a second valve 530. The liquid supply source 510 is connected to the flow channel of the tissue collector 140 through the second pipeline assembly 520. The second valve 530 is provided on the second pipeline assembly 520 to control the on / off state of the second pipeline assembly 520.

[0054] The specific structure of the biopsy needle 100 is as described in the above embodiments. Since this biopsy device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0055] The negative pressure assembly includes a negative pressure source 310, a first tubing assembly 320, and a first valve 330. The negative pressure source 310 is connected to the collection chamber 1401 of the tissue collector 140 through the first tubing assembly 320 to create a negative pressure environment for the collection chamber 1401. The first valve 330 is installed on the first tubing assembly 320 and is used to independently control the opening and closing of the first tubing assembly 320. This allows the user to control the start and stop of the negative pressure in the collection chamber 1401 according to the sampling process. On the one hand, it can cooperate with the cutting action of the inner blade tube 130 to ensure that the cut tissue sample is aspirated into the collection chamber 1401, avoiding tissue residue. At the same time, it avoids excessive damage to normal tissue caused by continuous negative pressure, ensuring the integrity of the sample. On the other hand, it can shut off the negative pressure during electrocoagulation, electrosurgical cutting, and radiofrequency ablation (such as high-frequency ablation and plasma ablation), adapting to different surgical scenarios. The negative pressure source 310 can be implemented by means of a vacuum pump, a manual air pump, etc.; the first valve 330 can be implemented by means of ball valve or gate valve, etc., and the on / off switching can be achieved by means of manual, pneumatic or electric.

[0056] Specifically, before the inner blade tube 130 cuts the tissue, the sampling window 111 is opened, and the collection chamber 1401 is connected to the inner blade tube 130. The negative pressure source 310 reduces the internal pressure of the collection chamber 1401 through the first tubing assembly 320, and then reduces the internal pressure of the assembly channel of the outer tube 110 through the inner blade tube 130. The tissue outside the sampling window 111 is sucked into the assembly channel of the outer tube 110 through the sampling window 111, which facilitates the inner blade tube 130 to cut the tissue. Then, the inner blade tube 130 moves towards the puncture head 120 to cut the tissue. At the same time, the inner blade tube 130 closes the sampling window 111. Under the action of negative pressure, the cut tissue moves through the inside of the inner blade tube 130 to the collection chamber 1401 of the tissue collector 140, which facilitates the subsequent sample retrieval.

[0057] The liquid injection assembly 500 includes a liquid supply source 510, a second pipeline assembly 520, and a second valve 530. The liquid injection assembly 500 is composed of the liquid supply source 510, the second pipeline assembly 520, and the second valve 530. The liquid supply source 510 is connected to the flow channel of the fluid component 170 through the second pipeline assembly 520. The second valve 530 is installed on the second pipeline assembly 520 and is used to independently control the conduction and cutoff of the second pipeline assembly 520. This allows users to control the start and stop of liquid injection, avoids interference between liquid injection and negative pressure sampling, and can both inject liquid into the sampling site and prevent liquid from accidentally flowing into the collection chamber 1401 and affecting the sample, thus improving the safety of the liquid injection operation. The liquid supply source 510 is a device for supplying a preset liquid (such as plasma ablation medium, cleaning solution, medicine, etc.), which may include a liquid storage container such as an infusion bag or infusion bottle, and a liquid pump for supplying the liquid in the storage container to the second pipeline assembly 520; it may also be a manual liquid supply device such as a syringe 540; the second valve 530 may be in the form of a ball valve or a gate valve, and can be switched on and off manually, pneumatically or electrically.

[0058] Specifically, the liquid in the liquid supply source 510 enters the flow channel of the fluid component 170 through the second pipeline assembly 520. The flow channel of the fluid component 170 is connected to the inner knife tube 130, so that the liquid enters the inner knife tube 130 from the flow channel of the fluid component 170, and is then transmitted to the sampling window 111 through the internal channel of the inner knife tube 130, thereby realizing liquid injection and achieving functions such as drug replenishment and plasma ablation.

[0059] The plasma ablation function involves releasing energy from the output electrode on the biopsy needle 100 (i.e., the outer tube 110 and puncture head 120 in this embodiment) while simultaneously injecting a plasma medium into the tissue through the sampling window 111. Under the influence of an electric current, the plasma medium forms plasma, which reacts chemically with the target tissue, breaking the molecular bonds and thus ablating the lesion. Plasma ablation typically produces a thermal effect within a low temperature range of 40-70℃, causing the lesion to shrink, flatten, disappear, or necrose, achieving the effect of eliminating the lesion. Due to the low temperature, the trauma and pain are minimal, facilitating rapid patient recovery.

[0060] The drug replenishment function refers to the ability of the injection component 500 to inject medications, such as antibiotics, hemostatic agents, and anesthetics, into the biopsy site. By enabling the drug replenishment function through the injection component 500, necessary treatments can be administered to patients during biopsy sampling procedures or lesion tissue ablation procedures, thereby improving the safety of the surgery.

[0061] In one embodiment, the biopsy device further includes: The third pipeline assembly 630 is connected to the second pipeline assembly 520 and the collection chamber 1401 respectively. The connection position of the third pipeline assembly 630 on the second pipeline assembly 520 is located on the connecting pipe 521 between the second valve 530 and the fluid component 170. The third valve 610 is located on the third pipeline assembly 630 and is used to control the on / off state of the third pipeline assembly 630. The fourth valve 620 is located on the connecting pipe 521 and is used to control the opening and closing of the connecting pipe 521.

[0062] Reference Figure 11In embodiments of the present invention, the biopsy device further includes a third tubing assembly 630, a third valve 610, and a fourth valve 620. The third tubing assembly 630 connects the second tubing assembly 520 and the collection chamber 1401. That is, the liquid in the supply source 510 can sequentially enter the collection chamber 1401 through a portion of the second tubing assembly 520 and the third tubing assembly 630. By configuring the liquid in the supply source 510 as a cleaning solution, the tissue sample cleaning function can be realized, cleaning any debris, blood, and impurities that may be present on the sample surface, improving the accuracy of tissue testing, and further enriching the application scope and applicable scenarios of the biopsy device in actual clinical operations. This reduces the complex steps and time consumption caused by frequently changing different devices during surgery, and improves surgical efficiency. During tissue cleaning, the rear end of the inner blade tube 130 can be connected to the flow channel of the fluid component 170 to prevent cleaning fluid from entering the inner blade tube 130 from the collection chamber 1401. This prevents cleaning fluid residue from remaining on the inner wall of the inner blade tube 130, thus avoiding contamination of the drug solution or plasma ablation medium during injection into the biopsy site and ensuring the utilization rate of the cleaning fluid. The third valve 610 is installed on the third tubing assembly 630 to independently control the opening and closing of the third tubing assembly 630. The fourth valve 620 is installed on the connecting pipe 521 to independently control the opening and closing of the connecting pipe 521. By controlling the third valve 610 and the fourth valve 620, the switching between the injection function and the sample cleaning function can be realized. Specifically, during tissue cleaning, the third valve 610 opens the third tubing assembly 630, and the fourth valve 620 cuts off the connecting pipe 521 to prevent the cleaning fluid from entering the flow channel of the fluid component 170 through the connecting pipe 521, and thus preventing it from entering the internal channel of the inner knife tube 130. This prevents residual cleaning fluid from contaminating the medication or plasma ablation medium when using the injection function, ensuring the efficacy and safety of the medication or the efficiency of plasma ablation. During the injection operation to the biopsy site, the third valve 610 cuts off the third tubing assembly 630, and the fourth valve 620 opens the connecting pipe 521 to ensure that the medication or plasma ablation medium only enters the flow channel of the fluid component 170 through the connecting pipe 521, and is then transported to the sampling window 111 through the internal channel of the inner knife tube 130 to enter the tissue, without entering the collection chamber 1401 of the tissue collector 140 through the third tubing assembly 630, thus ensuring the utilization rate of the medication or plasma ablation medium. Among them, the third valve 610 and the fourth valve 620 can be in various forms such as ball valves or gate valves, and can be switched on and off manually, pneumatically or electrically.

[0063] In one embodiment, the biopsy device further includes a waste collection assembly 340, which has an inlet and an outlet. The end of the first tubing assembly 320 away from the tissue collector 140 is connected to the inlet, and the outlet is connected to a negative pressure source 310.

[0064] Reference Figure 11 In an embodiment of the present invention, the negative pressure assembly further includes a waste collection assembly 340. During biopsy sampling, waste (such as tissue debris, blood, etc.) drawn from the assembly channel and inner blade tube 130 into the collection chamber 1401 can enter the waste collection assembly 340 through the first tubing assembly 320 from the inlet, achieving centralized collection and treatment of waste. The outlet of the waste collection assembly 340 is connected to the negative pressure source 310, ensuring that the negative pressure generated by the negative pressure source 310 can be transmitted to the waste collection assembly 340 through the outlet, and then to the first tubing assembly 320 and the collection chamber 1401 through the inlet. In addition, when using the tissue cleaning function, the waste liquid formed after rinsing the sample tissue surface after the cleaning fluid enters the collection chamber 1401 can also enter the waste collection assembly 340 through the first tubing assembly 320, avoiding the accumulation of waste liquid in the collection chamber 1401 and re-contamination of the tissue, thus improving the effectiveness of tissue cleaning.

[0065] Specifically, the waste collection assembly 340 includes a cylinder and a cap that is fastened to the cylinder. The outlet and inlet are both located on the cap, away from the bottom of the cylinder, so that the waste sucked up by the first pipeline assembly 320 can accumulate in the cylinder and will not enter the negative pressure source 310 through the outlet, thereby reducing the risk of damage to the negative pressure source 310 and extending its service life.

[0066] In one embodiment, the tissue collector 140 includes a collection box 141 and a filter structure 142. The collection box 141 has a collection cavity 1401, and the filter structure 142 is disposed in the collection cavity 1401. The collection box 141 also has a first communication port 1402 and a second communication port 1403 communicating with the collection cavity 1401. The first communication port 1402 is connected to the first pipeline assembly 320, and the second communication port 1403 is connected to the third pipeline assembly 630. The first communication port 1402 is disposed at the bottom of the filter structure 142. The rear end of the inner knife tube 130, the front end of the fluid component 170, and the second communication port 1403 are all disposed on the same side of the filter structure 142, for example, they can all be disposed above the filter structure 142.

[0067] Reference Figure 3 and Figure 4In an embodiment of the present invention, the tissue collector 140 includes a collection box 141 and a filter structure 142. The collection box 141 forms a collection cavity 1401 for accommodating the cut tissue sample. The collection cavity 1401 has a first connecting port 1402 and a second connecting port 1403. The first connecting port 1402 connects to a first tubing assembly 320, serving as a channel for negative pressure extraction or waste discharge; the second connecting port 1403 connects to a third tubing assembly 630, serving as a channel for injecting cleaning fluid into the collection cavity 1401. The filter structure 142 is disposed inside the collection cavity 1401 and uses a filter screen, grid, or similar structure to divide the collection cavity 1401 into two regions: a first region and a second region. Its filter pore size is smaller than the volume of the tissue sample, effectively blocking sample passage while allowing liquids and debris to pass through freely. By setting up the filter structure 142, the sample and impurities are separated, preventing sample aspiration and reducing impurities such as debris and blood in the sample, thus improving the accuracy of sample detection.

[0068] Specifically, the first connecting port 1402 is located in the first region, and the rear end of the inner knife tube 130, the front end of the fluid component 170, and the second connecting port 1403 are located in the second region. During biopsy sampling, referring to Figures 1 and 2, the rear end of the inner blade tube 130 is connected to the collection chamber 1401. Tissue samples drawn from the inner blade tube 130 into the collection chamber 1401 are blocked by the filter structure 142 and remain in the second area, while blood, debris, and other impurities pass through the filter structure 142 into the first area. They are then drawn out of the tissue collector 140 through the first connection port 1402 and enter the waste collection assembly 340 through the first tubing assembly 320. During tissue sample cleaning, referring to Figures 1 and 2, the liquid injection assembly 500 injects the cleaning solution into the third tubing assembly 630, which is then injected into the second area through the second connection port 1403. After flowing through the sample, the solution carries debris, blood, and other impurities through the filter structure 142 and is drawn out by the negative pressure assembly through the first connection port 1402 in the first area. It then enters the waste collection assembly 340 through the first tubing.

[0069] Based on the first embodiment of the biopsy device described above, a second embodiment of the biopsy device in this application is proposed. In the second embodiment of the biopsy device, the contents that are the same as or similar to those in the first embodiment are as described above and will not be repeated hereafter.

[0070] Reference Figure 12 The present invention also proposes a biopsy device, comprising: Biopsy needle 100, which is the biopsy needle 100 mentioned above; The negative pressure assembly includes a negative pressure source 310, a first tubing assembly 320, and a first valve 330. The negative pressure source 310 is connected to the collection chamber 1401 of the tissue collector 140 through the first tubing assembly 320. The negative pressure source 310 is used to generate negative pressure in the collection chamber 1401. The first valve 330 is provided on the first tubing assembly 320 to control the opening and closing of the first tubing assembly 320. The reversing valve 700 is equipped with a first port, a second port and a third port, the third port being used for liquid injection; Connecting pipe 521 connects the flow channel of fluid component 170 and the first interface; The third conduit assembly 630 connects the collection chamber 1401 and the second interface of the tissue collector 140.

[0071] In an embodiment of the present invention, the biopsy device includes a biopsy needle 100, a negative pressure assembly, a reversing valve 700, a connecting tube 521, and a third tubing assembly 630. The reversing valve 700 has a first interface, a second interface, and a third interface. The first interface is connected to the flow channel of the fluid component 170 via the connecting tube 521. The second interface is connected to the collection chamber 1401 of the tissue collector 140 via the third tubing assembly 630. The third interface is used for liquid injection; that is, the third interface can be used to connect to the liquid injection assembly 500 for continuous liquid injection, or a syringe 540 can be used to directly inject into the reversing valve 700 through the third interface. The device has a simple structure, is easy to operate, and is inexpensive. By controlling the reversing valve 700, any two of the first, second, and third ports can be connected to each other. For example, the third port can be isolated from the second port and connected to the first port. Liquid injected into the reversing valve 700 from the third port enters the connecting pipe 521 through the first port, and then is delivered to the biopsy site through the fluid component 170, the inner knife tube 130, and the sampling window 111 in sequence, thereby realizing drug replenishment or providing the plasma ablation medium required for plasma ablation. Alternatively, the third port can be isolated from the first port and connected to the second port. Liquid injected into the reversing valve 700 from the third port enters the third pipeline assembly 630 through the second port, and then enters the collection chamber 1401 of the tissue collector 140 to realize the tissue sample cleaning function.

[0072] In one embodiment, the biopsy device further includes: The biopsy handle 200 is connected to the biopsy needle 100. The biopsy handle 200 is provided with a drive assembly that is pulsatingly connected to the inner knife tube 130. The biopsy handle 200 is provided with an energy input interface, and the energy input interface is used to electrically connect at least one of the puncture tube and the inner knife tube 130 so that the energy input through the energy input interface can act on the target tissue through at least one of the puncture tube and the inner knife tube 130. The energy output device 400 is equipped with an energy output interface, which is detachably adapted to the energy input interface.

[0073] Reference Figure 12 In embodiments of the present invention, the biopsy device further includes a biopsy handle 200 and an energy output device 400. The energy output device 400 has an energy output interface, which is detachably connected to the energy input interface on the biopsy handle 200 via a snap-fit ​​or plug-in method. This allows energy to be transmitted to the energy input interface of the biopsy handle 200, then to the energy input electrode on the biopsy needle 100, and finally to the corresponding output electrode, acting on the target tissue. This enables the biopsy needle 100 to perform electrocautery, electrocoagulation, and radiofrequency ablation functions, or, in conjunction with a liquid injection function, to achieve plasma ablation. The energy output device 400 allows for adjustment of parameters such as the intensity and frequency of the output current, making it easy to control and convenient to flexibly adjust the current parameters according to different target tissues and surgical scenarios, thus enabling the biopsy device to meet diverse surgical needs.

[0074] In summary, the biopsy device provided in this embodiment integrates multiple functions such as biopsy sampling, high-frequency ablation, electrocautery, electrocoagulation, plasma ablation, tissue sample cleaning, and drug replenishment. This enriches the application scope and applicable scenarios of the biopsy needle 100 in clinical operations, reduces the complex steps and time consumption caused by frequent changes of different equipment during surgery, and thus improves surgical efficiency.

[0075] The steps for using the biopsy sampling function include: the inner blade tube 130 is located at the rear end of the assembly channel, opening the sampling window 111; the puncture head 120 and part of the outer tube 110 penetrate the tissue, with the tissue covering the sampling window 111; the first valve 330 is opened, and the reversing valve 700 connects the first and second interfaces, connecting the third tubing assembly 630 and the connecting tube 521; the negative pressure source 310 draws air, at which point the front end of the fluid component 170 can be connected to or separated from the rear end of the inner blade tube 130; when the front end of the fluid component 170 is connected to the rear end of the inner blade tube 130, combined with... Figure 3 and Figure 13 Air near sampling window 111 is sequentially drawn by negative pressure source 310 through assembly channel of outer tube 110, inner knife tube 130, fluid component 170, connecting pipe 521, reversing valve 700, third pipeline assembly 630, collection chamber 1401, first pipeline assembly 320, and waste collection assembly 340. Figure 13 As indicated by the middle arrow, a negative pressure is formed near the sampling window 111 within the assembly channel, causing tissue to be drawn into the sampling window 111; when the front end of the fluid component 170 is separated from the rear end of the inner knife tube 130, combined with Figure 4 and Figure 14 Air near sampling window 111 is sequentially drawn by negative pressure source 310 through assembly channel, inner knife tube 130, collection chamber 1401, first pipeline assembly 320, and waste collection assembly 340. Figure 14As indicated by the middle arrow, a negative pressure is formed near the sampling window 111 in the assembly channel, causing tissue to be drawn into the sampling window 111; the inner blade tube 130 rotates and advances towards the puncture head 120, cutting off the tissue within the sampling window 111, and then closing the sampling window 111. At this time, the cut tissue is located inside the inner blade tube 130, and the rear end of the inner blade tube 130 is away from the front end of the fluid component 170; the negative pressure source 310 continues to evacuate air, referring to... Figure 14 The air inside the inner blade tube 130 is sequentially drawn through the collection chamber 1401, the first tubing assembly 320, and the waste collection assembly 340 by the negative pressure source 310, creating a negative pressure within the inner blade tube 130. This causes the tissue inside the inner blade tube 130 to be drawn into the collection chamber 1401, thus completing the sampling. Furthermore, debris and blood generated during cutting can pass from the collection chamber 1401 through the first tubing assembly 320 into the waste collection assembly 340.

[0076] Reference Figure 15 The high-frequency ablation function is generally used after the puncture head 120 is inserted into the lesion tissue. The steps include: inserting the puncture head 120 and part of the outer tube 110 into the lesion tissue; turning on the energy output device 400, and the energy is sequentially transmitted from the energy output interface of the energy output device 400 to the energy input interface of the biopsy handle 200, the energy input electrode of the biopsy needle 100, and finally to the puncture head 120 and the outer tube 110, so that a high-frequency current flows between the puncture head 120 and the outer tube 110 to ablate the lesion tissue.

[0077] The steps for using the electrocautery function are the same as those for the radiofrequency ablation function, but the electrocautery function is generally used during the process of inserting the puncture head 120 into the lesion tissue.

[0078] The electrocoagulation function is generally used after biopsy sampling is completed. The steps include: inserting the puncture head 120 and part of the outer tube 110 into the wound after sampling; turning on the energy output device 400, the energy is transmitted from the energy output interface of the energy output device 400 to the energy input interface of the biopsy handle 200, the energy input electrode of the biopsy needle 100, and finally to the puncture head 120 and the outer tube 110, so that a high-frequency current flows between the puncture head 120 and the outer tube 110, and the tissue coagulates and stops bleeding through the thermal effect.

[0079] Reference Figure 16 The plasma ablation function is generally used after the puncture head 120 is inserted into the lesion tissue. The steps include: the puncture head 120 and part of the outer tube 110 are inserted into the lesion tissue, and the tissue covers the sampling window 111; the front end of the fluid component 170 is connected to the rear end of the inner knife tube 130; the first valve 330 is closed, the reversing valve 700 connects the first interface and the third interface, and the third interface is connected to the injection assembly 500; refer to Figure 16As shown by the middle arrow, the plasma ablation medium in the supply source 510 flows sequentially through the second pipeline assembly 520, the reversing valve 700, the connecting pipe 521, the fluid component 170, the inner knife tube 130, and the outer tube 110 toward the sampling window 111. When the energy output device 400 is turned on, energy is sequentially transmitted from the energy output interface of the energy output device 400 to the energy input interface of the biopsy handle 200, the energy input electrode of the biopsy needle 100, and finally to the puncture head 120 and the outer tube 110. Current flows between the puncture head 120 and the outer tube 110, and the plasma ablation medium generates plasma under the action of the current, ablating the lesion tissue.

[0080] Combination Figure 3 and Figure 17 The tissue sample cleaning function is generally used after biopsy sampling. The steps include: opening the first valve 330, connecting the reversing valve 700 to the second and third ports, and connecting the third port to the injection assembly 500; the cleaning solution in the supply source 510 sequentially passes through the second pipeline assembly 520, the reversing valve 700, the third pipeline assembly 630, and the second connecting port 1403 into the second area of ​​the collection chamber 1401, rinsing the tissue sample in the second area. Figure 17 As shown by the middle arrow; simultaneously, turn on the negative pressure source 310, and under the suction action of the negative pressure source 310, as... Figure 17 As shown by the middle arrow, the rinsed mixture passes through the filter structure 142 and enters the first area of ​​the collection chamber 1401. It then passes through the first connecting port 1402 and the first pipeline assembly 320 in sequence and enters the waste collection assembly 340 to achieve tissue sample cleaning.

[0081] The steps for using the medication replenishment function include: closing the first valve 330, connecting the front end of the fluid component 170 to the rear end of the inner knife tube 130; connecting the reversing valve 700 to the first port and the third port, with the third port connected to the injection assembly 500 or the syringe 540; refer to... Figure 18 The syringe 540 or the injection assembly 500 injects the medication into the third valve 610, as per the instructions. Figure 18 As shown by the middle arrow, the medicine flows sequentially through the connecting pipe 521, the fluid component 170, the inner knife tube 130, and the outer tube 110 toward the sampling window 111, thereby achieving the function of replenishing medicine.

[0082] The process of switching between plasma ablation, sample cleaning and drug replenishment using syringe 540 also includes the disassembly and assembly of syringe 540, second tubing assembly 520 and third interface of reversing valve 700.

[0083] The above description is merely an exemplary embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any equivalent structural transformations made based on the technical concept of the present invention and the contents of the specification and drawings of the present invention, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present invention.

Claims

1. A biopsy needle, characterized in that, include: A puncture tube includes an outer tube and a puncture head. The outer tube has an assembly channel extending along its own axial direction and a sampling window connecting the assembly channel with the external environment. The puncture head is located at the front end of the outer tube. An inner blade tube with a cutting section at its front end is movably inserted through the assembly channel and has a gap with the inner wall of the assembly channel to cut tissue that enters the assembly channel through the sampling window. The tissue collector has a collection chamber, and the rear end of the inner knife tube extends into the collection chamber; as well as A fluid component has an internal flow channel, a portion of which extends into the collection chamber, and the fluid component has an external interface that protrudes from the tissue collector, the external interface being in communication with the flow channel; Specifically, by moving the fluid component and / or the inner knife tube, the fluid component is connected to or separated from the rear end of the inner knife tube, thereby allowing the internal channel of the inner knife tube to selectively connect to either the flow channel or the collection chamber.

2. A biopsy needle, characterized in that, include: A puncture tube includes an outer tube and a puncture head. The outer tube has an assembly channel extending along its own axial direction and a sampling window connecting the assembly channel with the external environment. The puncture head is located at the front end of the outer tube. An inner blade tube with a cutting section at its front end is movably inserted through the assembly channel and has a gap with the inner wall of the assembly channel to cut tissue that enters the assembly channel through the sampling window. The tissue collector has a collection chamber, and the rear end of the inner knife tube extends into the collection chamber; A fluid component, having an internal flow channel, wherein a portion of the fluid component extends into the collection chamber, and the fluid component has an external interface exposed to the tissue collector, the external interface communicating with the flow channel; and An internal valve, built into the collection chamber and having an operating part extending from the tissue collector, is responsive to operation of the operating part to selectively connect the internal channel of the inner blade tube to either the flow channel or the collection chamber.

3. The biopsy needle as described in claim 1 or 2, characterized in that, At least one of the puncture tube and the inner knife tube is provided with an energy input electrode, so that at least one of the puncture tube and the inner knife tube forms an output electrode that acts on the target tissue.

4. The biopsy needle as described in claim 3, characterized in that, The biopsy needle also includes a biopsy needle handle fitted over the rear end of the outer tube, and the energy input electrode includes: The first electrode is disposed on the biopsy needle handle and electrically connected to the rear end of the outer tube; A second electrode is disposed on the biopsy needle handle and spaced apart from the first electrode; and An electrical connector is disposed on the outer wall of the outer tube and is insulated from the outer tube; the electrical connector is electrically connected to the second electrode and the puncture head. Through the energy input of the first electrode and the second electrode, the outer tube and the puncture head form a pair of output electrodes that act on the target tissue.

5. The biopsy needle as described in claim 4, characterized in that, The first electrode is an electrode contact, one end of which is located inside the biopsy needle handle and connected to the rear end of the outer tube via a wire; the other end of which extends through the biopsy needle handle to the outside of the biopsy needle handle; and / or, The second electrode is an electrode ring, which is spaced out and sleeved around the outside of the outer tube and electrically connected to the electrical connector; and / or, The electrical connector is a flexible electrical board.

6. A biopsy kit, characterized in that, include: Biopsy needle, wherein the biopsy needle is any one of claims 1-5; A biopsy handle is connected to the biopsy needle, and the biopsy handle is provided with a drive assembly that is connected to the inner blade tube.

7. A biopsy kit, characterized in that, include: Biopsy needle, wherein the biopsy needle is any one of claims 3-5; The biopsy handle is connected to the biopsy needle. The biopsy handle is equipped with a drive assembly that is connected to the inner blade tube. The biopsy handle is equipped with an energy input interface, and the energy input interface is electrically connected to the energy input electrode so that the energy input through the energy input interface can reach the output electrode to act on the target tissue.

8. A biopsy device, characterized in that, include: Biopsy needle, wherein the biopsy needle is any one of claims 1-5; The negative pressure assembly includes a negative pressure source, a first pipeline assembly, and a first valve. The negative pressure source is connected to the collection chamber of the tissue collector through the first pipeline assembly. The negative pressure source is used to generate negative pressure in the collection chamber. The first valve is disposed on the first pipeline assembly to control the on / off state of the first pipeline assembly. The liquid injection assembly includes a liquid supply source, a second pipeline assembly, and a second valve. The liquid supply source is connected to the flow channel of the tissue collector through the second pipeline assembly. The second valve is located on the second pipeline assembly to control the on / off state of the second pipeline assembly.

9. The biopsy device as claimed in claim 8, characterized in that, The biopsy device also includes: The third pipeline assembly is connected to the second pipeline assembly and the collection chamber respectively, and the connection position of the third pipeline assembly on the second pipeline assembly is located on the connecting pipe between the second valve and the fluid component; A third valve is provided on the third pipeline assembly and is used to control the on / off state of the third pipeline assembly; The fourth valve is located on the connecting pipe and is used to control the opening and closing of the connecting pipe.

10. A biopsy device, characterized in that, include: Biopsy needle, wherein the biopsy needle is any one of claims 1-5; The negative pressure assembly includes a negative pressure source, a first pipeline assembly, and a first valve. The negative pressure source is connected to the collection chamber of the tissue collector through the first pipeline assembly. The negative pressure source is used to generate negative pressure in the collection chamber. The first valve is disposed on the first pipeline assembly to control the on / off state of the first pipeline assembly. The reversing valve is provided with a first interface, a second interface and a third interface, wherein the third interface is used for liquid injection; A connecting pipe connects the flow channel of the fluid component to the first interface; The third tubing assembly connects the collection chamber of the tissue collector to the second interface.

11. The biopsy device as described in any one of claims 8-10, characterized in that, Also includes: A biopsy handle is connected to the biopsy needle. The biopsy handle is provided with a drive assembly that is connected to the inner knife tube. The biopsy handle is provided with an energy input interface, and the energy input interface is used to electrically connect at least one of the puncture tube and the inner knife tube so that the energy input through the energy input interface can act on the target tissue through at least one of the puncture tube and the inner knife tube. An energy output device is provided with an energy output interface, which is detachably adapted to and connected to the energy input interface.

Images