Coagulation biopsy needle, coagulation biopsy kit, and coagulation biopsy device

Abstract

The application relates to an electrocoagulation biopsy needle, an electrocoagulation biopsy kit and an electrocoagulation biopsy device. The puncture tube of the puncture assembly of the electrocoagulation biopsy needle is insulated from the puncture head of the cutting assembly. The outer wall of the puncture tube is provided with a first electrode. The outer surface of the puncture head is provided with a second electrode. The cutting part of the cutting assembly is provided with a third electrode. Two of the first electrode, the second electrode and the third electrode are used for electrically connecting with a first polarity terminal of an energy source. The other of the first electrode, the second electrode and the third electrode is used for electrically connecting with a second polarity terminal of the energy source. The electrocoagulation biopsy needle, the electrocoagulation biopsy kit and the electrocoagulation biopsy device can apply energy to the puncture assembly or the cutting assembly through the energy source, so as to stop bleeding at the puncture part located at the puncture head or the cutting part located at the cutting part. The coagulation circuit of puncture and cutting shares a connection terminal, so that the device structure is effectively simplified and the operation convenience is improved.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to electrocoagulation biopsy needles, electrocoagulation biopsy kits, and electrocoagulation biopsy devices. Background Technology

[0002] The electrocoagulation biopsy needle integrates electrocoagulation function on the basis of the function of conventional biopsy needle. When applied to the electrocoagulation biopsy device, it can remove lesions or take biopsy samples during minimally invasive surgery, and use its electrocoagulation function to stop bleeding or accelerate the removal of lesions during the operation.

[0003] Existing electrocoagulation biopsy needles are equipped with electrodes for contacting the wound site. By connecting the electrodes to an energy source, they are designed to stop bleeding at the wound site after tissue cutting. However, although existing electrocoagulation biopsy needles can achieve a certain degree of hemostasis, intraoperative and postoperative bleeding still occurs in clinical applications. Utility Model Content

[0004] Therefore, it is necessary to provide an electrocoagulation biopsy needle, electrocoagulation biopsy kit, and electrocoagulation biopsy device to address the problem of intraoperative and postoperative bleeding that still exists in the clinical application of the aforementioned electrocoagulation biopsy needles, in order to improve the hemostasis effect.

[0005] According to one aspect of this application, an electrocoagulation biopsy needle is provided, comprising:

[0006] The puncture assembly includes a puncture tube and a puncture head disposed at the front end of the puncture tube, wherein a sampling groove is formed on the outer wall of the front end of the puncture tube.

[0007] A cutting assembly includes a cutting tube with a cutting section at its front end. The cutting tube is disposed inside the puncture tube and can reciprocate along the axial direction of the puncture tube, so that the cutting section can cut the tissue entering the puncture tube from the sampling groove.

[0008] The puncture tube and the puncture head are insulated from each other. A first electrode is formed at the front end of the puncture tube, a second electrode is formed on the outer surface of the puncture head, and a third electrode is formed in the cutting part.

[0009] Two of the first, second, and third electrodes are electrically connected to the first polarity terminal of the energy source, and the other electrode is electrically connected to the second polarity terminal of the energy source, so that two of the first, second, and third electrodes can form positive and negative electrodes of the corresponding coagulation circuit with the other electrode respectively.

[0010] In one embodiment, the first electrode is electrically connected to a first polarity terminal of an energy source, and the second and third electrodes are both electrically connected to a second polarity terminal of the energy source, so that the first and second electrodes can form a pair of positive and negative electrodes for a needle tip coagulation circuit, and the first and third electrodes can form a pair of positive and negative electrodes for cutting the coagulation circuit.

[0011] In one embodiment, the outer wall of the puncture tube includes:

[0012] A first insulating region, the first insulating region being covered by a first insulating layer;

[0013] The first exposed area is located at the front end of the first insulating area to form the first electrode;

[0014] The first electrical connection region is used for electrical connection with the second polarity terminal of the energy source.

[0015] In one embodiment, the puncture assembly further includes an insulating sleeve, the puncture head includes a tip, and the insulating sleeve is axially spaced between the tip and the puncture tube.

[0016] In one embodiment, the puncture assembly further includes a conductive tube, which is fitted inside the puncture tube and outside the cutting tube. The conductive tube is insulated from both the puncture tube and the cutting tube. The puncture head is connected to the front end of the conductive tube so that the puncture head is electrically connected to the first polarity terminal of the energy source via the conductive tube.

[0017] In one embodiment, the outer wall of the conductive tube includes:

[0018] The second insulating region is covered with a second insulating layer for insulating the conductive tube from the puncture tube.

[0019] The second electrical connection area is used for electrical connection with the first polarity terminal of the energy source.

[0020] In one embodiment, the outer wall of the cutting tube includes:

[0021] The third insulation zone is covered with a third insulation layer for insulating the puncture tube and the cutting tube;

[0022] The second exposed area is correspondingly provided on the cut portion to form the third electrode;

[0023] The third electrical connection area is used for electrical connection with the second polarity terminal of the energy source.

[0024] In one embodiment, the electrocoagulation biopsy needle further includes a drive assembly connected to the cutting tube to drive the cutting tube to reciprocate and / or rotate axially within the puncture tube.

[0025] The puncture tube is connected to a first conductive element, the puncture head is connected to a second conductive element, and the cutting tube is connected to a third conductive element. Two of the first, second, and third conductive elements are used to connect to the first polarity terminal of the energy source, and the other of the first, second, and third conductive elements are used to connect to the second polarity terminal of the energy source.

[0026] The first conductive element and the second conductive element are both arranged in front of the driving assembly along the axial direction of the cutting tube, and the third conductive element is arranged behind the driving assembly along the axial direction of the cutting tube.

[0027] According to another aspect of this application, an electrocoagulation biopsy kit is provided, including a biopsy handle and an electrocoagulation biopsy needle as described in any of the above embodiments, wherein the electrocoagulation biopsy needle is detachably connected to the biopsy handle.

[0028] According to another aspect of this application, an electrocoagulation biopsy device is provided, comprising:

[0029] An electrocoagulation biopsy kit, the electrocoagulation biopsy kit including a biopsy handle and an electrocoagulation biopsy needle as described in any of the above embodiments, the electrocoagulation biopsy needle being detachably connected to the biopsy handle;

[0030] The biopsy host is detachably connected to the biopsy handle. The biopsy host is equipped with an energy source, which has a first polarity terminal and a second polarity terminal with opposite polarities.

[0031] The aforementioned electrocoagulation biopsy needle, electrocoagulation biopsy kit, and electrocoagulation biopsy device can apply energy to the puncture component and / or cutting component via an energy source. This energy passes through the first electrode, the second electrode, and the third electrode, enabling hemostasis at both the puncture site and the cutting site to be connected to the corresponding coagulation circuit. This improves the hemostasis effect on wound tissue during biopsy sampling. Simultaneously, two of the first, second, and third electrodes can form positive and negative electrodes of the corresponding coagulation circuit with the other electrode, meaning one electrode serves as a shared electrode. This simplifies the equipment structure and reduces costs. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the structure of an electrocoagulation biopsy device according to some embodiments of this application.

[0033] Figure 2 for Figure 1 A magnified view of part A.

[0034] Figure 3 This is a schematic diagram of the structure of an electrocoagulation biopsy kit according to some embodiments of this application.

[0035] Figure 4 for Figure 1 A magnified view of part B.

[0036] Figure 5 for Figure 1 A magnified view of part C.

[0037] Figure 6 for Figure 1 A magnified view of part D.

[0038] Figure 7 This is a partial structural schematic diagram of the electrocoagulation biopsy needle according to some embodiments of this application.

[0039] Figure 8 This is a schematic diagram of the structure between the drive assembly and the cutting tube of an electrocoagulation biopsy needle according to some embodiments of this application.

[0040] Figure label:

[0041] 1. Puncture assembly;

[0042] 11. Puncture tube; 111. First insulation zone; 112. First exposed zone; 113. First electrical connection zone;

[0043] 12. Piercing head; 121. Tip; 122. Connecting part;

[0044] 13. Insulating sleeve;

[0045] 14. Conductive tube; 141. Second insulation zone; 142. Second electrical connection zone;

[0046] 15. First conductive element; 16. Second conductive element;

[0047] 2. Cutting components;

[0048] 21. Cutting tube; 211. Third insulation zone; 212. Second exposed zone; 213. Third electrical connection zone;

[0049] 22. Cutting section; 23. Third conductive component;

[0050] 3. Sampling slot; 31. First front end contour;

[0051] 4. Drive assembly; 41. First drive component; 42. Second drive component; 43. Fixed base; 44. First movable sleeve; 45. Second movable sleeve; 46. Third movable sleeve;

[0052] 5. Outer casing;

[0053] 6. Collection box;

[0054] 7. Energy source;

[0055] A. First electrode; B. Second electrode; C. Third electrode. Detailed Implementation

[0056] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0057] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0058] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0059] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0060] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0061] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0062] See Figure 1 and Figure 3 This application provides an embodiment of an electrocoagulation biopsy needle applicable to electrocoagulation biopsy kits and devices. For ease of understanding, in one possible implementation, the electrocoagulation biopsy device includes a biopsy unit (not shown) and an electrocoagulation biopsy kit. The kit includes a biopsy handle (not shown) and an electrocoagulation biopsy needle, which can be mounted on the biopsy handle, and the handle provides sampling power to the needle.

[0063] The electrocautery biopsy needle includes a puncture assembly 1 for performing puncture operations and a cutting assembly 2 for performing cutting operations.

[0064] See Figure 1 and Figure 2 The puncture assembly 1 includes a puncture tube 11 and a puncture head 12 disposed at the front end of the puncture tube 11. A sampling groove 3 is formed on the outer wall of the front end of the puncture tube 11. It is understood that the puncture tube 11 has a rear end and a front end arranged along its axial direction. The puncture head 12 is disposed at the front end of the puncture tube 11 and has a tip for penetrating skin, tissue, or other target materials. The sampling groove 3 is formed on the outer wall of the front end of the puncture tube 11 near the puncture head 12. After the puncture head 12 penetrates the target tissue, a portion of the tissue will enter the sampling groove 3 under negative pressure.

[0065] The cutting assembly 2 includes a cutting tube 21, with a cutting section 22 at its front end. The cutting tube 21 is located inside the puncture tube 11 and can reciprocate along the axial direction of the puncture tube 11. Specifically, the cutting section 22 is a cutting edge located on the outer wall of the front end of the cutting tube 21, and the cutting edge is an annular edge extending circumferentially along the cutting tube 21. When the cutting tube 21 reciprocates along the axial direction of the puncture tube 11, the cutting edge of the cutting section 22 can cut the tissue entering the puncture tube 11 from the sampling groove 3, and the tissue cut by the cutting tube 21 is adsorbed into the collection box 6 at the rear end of the puncture tube 11 under the action of negative pressure, thereby completing the sampling of the tissue in the puncture tube 11. It should be noted that the negative pressure for adsorbing the tissue is usually provided by a negative pressure source connected to the cutting tube. The specific connection method can adopt existing methods or other methods, as long as it can provide the negative pressure to draw the tissue into the puncture tube and aspirate the collected tissue.

[0066] For further details, please refer to [link / reference]. Figure 1 , Figure 2 and Figure 7 The puncture tube 11 and the puncture head 12 are insulated from each other. A first electrode A is formed at the front end of the puncture tube 11, a second electrode B is formed on the outer surface of the puncture head 12, and a third electrode C is formed on the cutting section 22. Two of the first electrode A, the second electrode B, and the third electrode C are electrically connected to the first polarity terminal of the energy source 7, and the other electrode is electrically connected to the second polarity terminal of the energy source 7. This allows two of the first electrode A, the second electrode B, and the third electrode C to form positive and negative electrodes of the corresponding coagulation circuit with the other electrode, enabling the energy source 7 to apply energy to the first electrode A, the second electrode B, and the third electrode C, thereby simultaneously stopping bleeding at the puncture site at the puncture head 12 and the cutting section 22 at the cutting section 22.

[0067] Specifically, in the embodiments of this application, the first electrode A is electrically connected to the first polarity terminal of the energy source 7, and the second electrode B and the third electrode C are both electrically connected to the second polarity terminal of the energy source 7, so that the first electrode A and the second electrode B can form a pair of positive and negative electrodes for the needle tip coagulation circuit, and the first electrode A and the third electrode C can form a pair of positive and negative electrodes for cutting the coagulation circuit. The energy source 7 can stop bleeding at the puncture site located at the puncture head 12 by applying energy to the puncture assembly 1, and can also stop bleeding at the cutting part 22 located at the cutting part 22 by applying energy to the cutting assembly 2. This allows the electrocoagulation biopsy needle to apply energy to the wound site during or after sampling, achieving an effective hemostasis effect. During biopsy sampling, the main tissue damage includes damage caused by the puncture head 12 acting on the tissue during puncture and damage caused by the cutting part 22 acting on the tissue during cutting. In this method, the first electrode A of the puncture tube 11 is used as a common electrode. In the needle tip coagulation circuit, the current applies energy to the tissue outside the needle between the location of the first electrode A on the outer surface of the puncture tube 11 and the location of the second electrode B on the outer surface of the puncture head 12. This is beneficial for the punctured wound tissue to be covered by energy, resulting in good hemostasis at the puncture site. In the needle tip coagulation circuit, the current applies energy to the tissue at the cut site between the location of the first electrode A on the puncture tube 11 and the location of the third electrode C on the cutting part 22. This also effectively stops bleeding at the wound site caused by cutting. In another embodiment not shown, the first electrode A and the second electrode B are both electrically connected to the first polarity terminal of the energy source 7, and the third electrode C is electrically connected to the second polarity terminal of the energy source 7, so that the first electrode A and the third electrode C can form a pair of positive and negative electrodes for cutting the coagulation circuit, so that the energy source 7 can apply energy to the cutting assembly 2 to denature the protein in the cutting part 22, so as to stop the bleeding at the cutting part 22.

[0068] In another embodiment, not shown, the first electrode A and the third electrode C are both electrically connected to the first polarity terminal of the energy source 7, and the second electrode B is electrically connected to the second polarity terminal of the energy source 7, so that the first electrode A and the second electrode B can form a pair of positive and negative electrodes for the needle tip coagulation circuit, so that the energy source 7 can apply energy to the puncture assembly 1 to denature the protein at the puncture site located at the puncture head 12, thereby stopping the bleeding at the puncture site.

[0069] In this application, the puncture tube 11, the puncture head 12, and the cutting tube 21 are all made of conductive materials.

[0070] It should be noted that in the above embodiments, the energy source 7 can be used to generate high-frequency current. The first polarity terminal can be a positive or negative terminal, and the second polarity terminal can be a negative or positive terminal. The polarities of the first and second polarity terminals are opposite. In actual implementation, the first and second polarity terminals can be integrated into the same interface or correspond to different interfaces.

[0071] It should also be emphasized that the corresponding appendices in this implementation... Figure 1 The diagram only shows one wiring principle between the energy source 7 and the electrocautery biopsy needle. The energy source 7 has one first polarity terminal and two second polarity terminals. The first polarity terminal is electrically connected to the first electrode A, and the second polarity terminals are electrically connected to the second electrode B and the third electrode C, respectively. In actual implementation, the second electrode B and the third electrode C can also be electrically connected using a biopsy handle (not shown) and then electrically connected to the same second polarity terminal; additionally, Figure 1 The diagram only shows the energy source 7. In actual implementation, the energy source 7 can exist independently of the biopsy host or be integrated into the biopsy host.

[0072] In summary, the electrocoagulation biopsy needle of this application can apply energy to the puncture assembly and / or cutting assembly through the energy source 7, so that the energy passes through the first electrode A, the second electrode B and the third electrode C, thereby enabling the puncture site by the puncture head and the cutting site by the cutting part to be connected to the corresponding coagulation circuit for hemostasis, which can improve the hemostasis effect on traumatic tissue during biopsy sampling.

[0073] Meanwhile, two of the first electrode A, the second electrode B, and the third electrode C can form positive and negative electrodes for the corresponding coagulation circuit with the other electrode, thereby simplifying the overall structure of the electrocoagulation biopsy needle, reducing costs, and facilitating control of the needle diameter, thus controlling the size of the incision during the patient's puncture. Therefore, the electrocoagulation biopsy needle of this application has significant advantages.

[0074] See Figure 2 , Figure 4 , Figure 5 and Figure 7 In one embodiment, the outer wall of the puncture tube 11 includes a first insulating region 111, a first exposed region 112, and a first electrical connection region 113. The first insulating region 111 is covered with a first insulating layer to effectively isolate current on the outer wall of the puncture tube 11. The first exposed region 112 is located at the front end of the first insulating region 111 to form a first electrode A. The first electrical connection region 113 is used for electrical connection with the second polarity terminal of the energy source 7, so that the second polarity terminal of the energy source 7 can be electrically connected to the first electrode A through the first electrical connection region 113.

[0075] Specifically, the front end of the sampling groove 3 has a first front end profile 31 facing the rear of the sampling groove 3. This first front end profile 31 is located at the intersection of the first exposed area 112 and the first insulating area, so that no large area of ​​current passes through the edge profile of the sampling groove 3, thereby reducing the possibility of energy burning of the tissue passing through the sampling groove 3 and helping to avoid energy damage to the tissue to be sampled. At the same time, the first front end profile 31 is located in the cutting coagulation circuit. When cutting tissue, the first front end profile 31 and the cutting part work together on the tissue, so the energy of the first front end profile 31 can accelerate the tissue cutting speed during the cutting process and simultaneously stop the bleeding of the tissue at the cut site. It can be understood that, except for the first exposed area 112 and the first electrical connection area 113, the outer wall of the puncture tube 11 is the first insulating area 111. After the first insulating layer covers the outer wall of the puncture tube 11, only the first exposed area 112 and the first electrical connection area 113 are exposed. In this way, the energy can pass through the first exposed area 112 more concentratedly, resulting in better coagulation effect.

[0076] The first insulating layer may be an insulating coating or an insulating kit. In the embodiments of this application, the first insulating layer is an insulating coating.

[0077] See Figure 2 and Figure 4 In one embodiment, the puncture assembly 1 further includes an insulating sleeve 13, the puncture head 12 includes a tip 121, and the insulating sleeve 13 is axially spaced between the tip 121 and the puncture tube 11 so that two electrodes of opposite polarity can be formed on the puncture head 12 and the puncture tube 11, thereby forming a needle tip coagulation circuit.

[0078] Specifically, the puncture head 12 includes a tip 121 and a connecting portion 122 connected to the rear end of the tip 121. The tip 121 has an axial limiting surface facing the rear end of the connecting portion 122. The front end of the insulating sleeve 13 is connected to the axial limiting surface, and the rear end of the insulating sleeve 13 is connected to the front end of the puncture tube 11. Both the insulating sleeve 13 and the puncture tube 11 are fitted over the connecting portion 122. This structure can achieve insulation between the puncture head 12 and the puncture tube 11 through the insulating sleeve 13, and can also place part of the puncture head 12 inside the puncture tube 11, thereby improving the structural tightness. The insulating sleeve 13 can be made of silicone rubber, PVC, PE, PTFE, XLPE, or ceramic materials.

[0079] See Figure 2 , Figure 4 and Figure 5To enable the puncture head 12, which is insulated from the puncture tube 11, to be electrically connected to the energy source 7, in one embodiment, the puncture assembly 1 further includes a conductive tube 14. The conductive tube 14 is fitted inside the puncture tube 11 and outside the cutting tube 21. The conductive tube 14 is insulated from both the puncture tube 11 and the cutting tube 21. The puncture head 12 is connected to the front end of the conductive tube 14 so that the puncture head 12 is electrically connected to the first polarity terminal of the energy source 7 via the conductive tube 14.

[0080] Specifically, the conductive tube 14 is simultaneously sleeved on the outside of both the cutting tube 21 and the connecting part 122, so as to ensure the stability of the conductive tube 14 between the cutting tube 21 and the puncture tube 11, while allowing the puncture head 12 to conduct electricity through the connecting part 122. The insulating sleeve 13 and the puncture tube 11 are both sleeved on the outside of the conductive tube 14, so as to further ensure the stability of the conductive tube 14 between the cutting tube 21 and the puncture tube 11, while preventing the puncture tube 11 from contacting the puncture head 12 and causing a short circuit.

[0081] See Figure 4 and Figure 5 In one embodiment, the outer wall of the conductive tube 14 includes a second insulating region 141 and a second electrical connection region 142. The second electrical connection region 142 is used for electrical connection with a first polarity terminal of the energy source 7, so that the energy source 7 can apply energy to the conductive tube 14 through the first polarity terminal and the second electrical connection region 142, thereby allowing the energy to act on the puncture site through the puncture head 12. The second insulating region 141 is covered with a second insulating layer for insulating the conductive tube 14 from the puncture tube 11, so as to prevent short circuit between the conductive tube 14 and the puncture tube 11 when the energy source 7 applies energy to the conductive tube 14.

[0082] Specifically, the sampling groove 3 penetrates the second insulating region 141 of the conductive tube 14 to ensure that the cutting part 22 located inside the conductive tube 14 can properly cut the tissue within the sampling groove 3. Understandably, the sampling groove 3 opens onto the first insulating region 111 and extends radially along the puncture tube 11 and the conductive tube 14 for a distance equal to the sum of the wall thickness of the puncture tube 11, the gap between the puncture tube 11 and the conductive tube, and the wall thickness of the conductive tube 14.

[0083] The second insulating layer may be an insulating coating or an insulating kit. In the embodiments of this application, the second insulating layer is an insulating coating.

[0084] See Figure 2 , Figure 6 and Figure 7In one embodiment, the outer wall of the cutting tube 21 includes a third insulating region 211, a second exposed region 212, and a third electrical connection region 213. The third insulating region 211 is covered with a third insulating layer to insulate the puncture tube 11 and the cutting tube 21, effectively isolating the current on the outer wall of the cutting tube 21 and preventing a short circuit between the cutting tube 21 and the puncture tube 11. The second exposed region 212 is correspondingly disposed on the cutting portion 22 to form the third electrode C. The third electrical connection region 213 is used for electrical connection with the second polarity terminal of the energy source 7, so that the second polarity terminal of the energy source 7 can be electrically connected to the third electrode C through the third electrical connection region 213.

[0085] Specifically, the outer peripheral surface of the third insulating layer mates with the inner peripheral surface of the conductive tube 14 to ensure the stability between the conductive tube 14 and the cutting tube 21 while preventing short circuits caused by contact between the conductive tube 14 and the cutting tube 21. The third electrode C is located at the cutting edge of the cutting section 22 so that when the energy source 7 applies energy to the cutting assembly 2, the cutting section 22 located at the cutting edge can achieve rapid hemostasis.

[0086] The third insulating layer may be an insulating coating or an insulating kit. In the embodiments of this application, the third insulating layer is an insulating coating.

[0087] It should be noted that the drive component 4 that drives the cutting tube 21 to move within the puncture tube 11 can be of existing or other types, as long as it enables the cutting tube 21 to move along the puncture tube 11. The drive component 4 will be described exemplarily below:

[0088] See Figure 3 and Figure 6 In one embodiment, the electrocoagulation biopsy needle further includes a drive assembly 4, which is connected to a cutting tube 21 to drive the cutting tube 21 to reciprocate and / or rotate axially within the puncture tube 11, thereby cutting the tissue within the sampling groove 3. A portion of the cutting tube 21 is inserted within the puncture tube 11, and a portion extends rearward out of the puncture tube 11. The drive assembly 4 is connected to the portion of the cutting tube 21 located outside the puncture tube 11.

[0089] See Figure 6 and Figure 8 Specifically, the drive assembly 4 includes a first drive member 41, a second drive member 42, and a fixed base 43. The fixed base 43 is connected to the cutting tube 21, the first drive member 41 is drivenly connected to the fixed base 43 to drive the cutting tube 21 to rotate inside the puncture tube 11, and the second drive member 42 is drivenly connected to the fixed base 43 to drive the cutting tube 21 to reciprocate axially inside the puncture tube 11.

[0090] More specifically, the first driving member 41 is a rotary driving gear, and the second driving member 42 is a reciprocating driving gear. The driving assembly 4 also includes a first movable sleeve 44, a second movable sleeve 45, and a third movable sleeve 46. The first driving member 41 and the first movable sleeve 44 are coaxially sleeved on the outside of the puncture tube 11, and the first movable sleeve 44 and the first driving member 41 are fixedly connected so that when the first driving member 41 rotates, the first movable sleeve 44 rotates accordingly. The fixed seat 43 is slidably connected to the first movable sleeve 44 along the axial direction of the puncture tube 11, so that the fixed seat 43 can rotate with the first movable sleeve 44 to drive the cutting tube 21 to rotate, and can also reciprocate back and forth relative to the first movable sleeve 44 along the axial direction of the puncture tube 11 to drive the cutting tube 21 to reciprocate back and forth.

[0091] The second movable sleeve 45 is coaxially sleeved on the outside of the first movable sleeve 44. The second driving member 42 is coaxially connected to the second movable sleeve 45 so that when the second driving member 42 rotates, the second movable sleeve 45 can rotate accordingly. One axial side of the third movable sleeve 46 is threadedly connected to the second movable sleeve 45, and the other axial side of the third movable sleeve 46 is connected to the fixed seat 43 so that when the second driving member 42 drives the second movable sleeve 45 to rotate, the third movable sleeve 46 can reciprocate back and forth along the axial direction of the puncture tube 11, thereby driving the cutting tube 21 on the fixed seat 43 to reciprocate back and forth.

[0092] Understandably, in the embodiments of this application, in order to improve structural stability, the fixing seat 43 is an annular seat body to increase the contact area between the fixing seat 43 and the first movable sleeve 44 and the third movable sleeve 46.

[0093] To enable the fixed base 43 to both reciprocate under the drive of the third movable sleeve 46 and rotate under the drive of the first movable sleeve 44, a first annular locking structure is provided on one axial side of the fixed base 43, and a second annular locking structure is provided on the inner circumferential surface of the third movable sleeve 46. The first and second annular locking structures are engaged to allow the first annular locking structure to both rotate within the second annular locking structure and reciprocate under the drive of the second annular locking structure. The first and second annular locking structures can be annular groove and annular block, or annular block and annular groove, respectively.

[0094] A first sliding structure is provided on the other side of the axial direction of the fixed base 43, and a second sliding structure is provided on the outer circumferential surface of the first movable sleeve 44. The first sliding structure and the second sliding structure are slidably connected along the axial direction of the puncture tube 11, so that the first sliding structure can rotate under the drive of the second sliding structure, and can also reciprocate back and forth on the second sliding structure. The first sliding structure and the second sliding structure can be a slide groove and a slider, or a slider and a slide groove, respectively.

[0095] See Figure 5 and Figure 6 In one embodiment, the puncture tube 11 is connected to a first conductive element 15, the puncture head 12 is connected to a second conductive element 16, and the cutting tube 21 is connected to a third conductive element 23. Two of the first conductive elements 15, 16, and 23 are used to connect to the first polarity terminal of the energy source 7, and the other of the first conductive elements 15, 16, and 23 is used to connect to the second polarity terminal of the energy source 7, so that the energy source 7 can be electrically connected to the puncture tube 11, the puncture head 12, and the cutting tube 21.

[0096] Specifically, the first conductive element 15 is disposed on the first electrical connection area 113 of the puncture tube 11, the second conductive element 16 is disposed on the second electrical connection area 142 of the conductive tube 14, and the third conductive element 23 is disposed on the third electrical connection area 213 of the cutting tube 21. The energy source 7 can be electrically connected to the first exposed area 112, the puncture head 12, and the cutting part 22 through the first conductive element 15, the second conductive element 16, and the third conductive element 23, respectively. So that when the first conductive element 15 is electrically connected to the first polarity terminal of the energy source 7, and the second conductive element 16 and the third conductive element 23 are both electrically connected to the second polarity terminal of the energy source 7, the sampling groove 3 and the puncture head 12 can form a pair of positive and negative electrodes for the needle tip coagulation circuit, and the first exposed area 112 and the cutting part 22 can form a pair of positive and negative electrodes for the cutting coagulation circuit. The energy source 7 can stop bleeding at the puncture site located at the puncture head 12 by applying energy to the puncture assembly 1, and can also stop bleeding at the cutting part 22 located at the cutting part 22 by applying energy to the cutting assembly 2, so that the electrocoagulation biopsy needle can achieve effective hemostasis when treating patients.

[0097] The first conductive element 15 and the second conductive element 16 are both arranged in front of the drive assembly 4 along the axial direction of the cutting tube 21, and the third conductive element 23 is arranged behind the drive assembly 4 along the axial direction of the cutting tube 21 to accommodate a structure where the length of the cutting tube 21 is greater than the length of the conductive tube 14, and the length of the conductive tube 14 is greater than the length of the puncture tube 11. The biopsy handle for connection with the electrocoagulation biopsy needle has a collection box 6. The third conductive element 23 is located between the drive assembly 4 and the collection box 6, and is sealed to the collection box 6 to prevent leakage from the collection box 6 from affecting the normal conductivity of the third conductive element 23.

[0098] Furthermore, in the embodiments of this application, the first conductive element 15, the second conductive element 16, and the third conductive element 23 are all electrode springs. Through the spring structure and elastic contacts of the electrode springs, the energy source 7 can have a stable electrical connection with the puncture assembly 1 and the cutting assembly 2, and ensure that the electrical connection remains reliable after frequent use and multiple insertions and removals.

[0099] See Figure 3 This application also provides an electrocoagulation biopsy kit, including a biopsy handle and an electrocoagulation biopsy needle as described in any of the above embodiments, wherein the electrocoagulation biopsy needle is detachably connected to the biopsy handle. Specifically, the electrocoagulation biopsy needle further includes a housing 5 that houses the puncture assembly 1 and the cutting assembly 2, and the housing 5 is snap-fitted to the biopsy handle. The biopsy handle has a collection box 6 for receiving and storing the cut tissue sample, and the rear end of the cutting tube 21 passes through and extends into the collection box 6. The contact area between the cutting tube 21 and the collection box 6 can be provided with a sealing structure so that the third conductive element 23 can be sealed and spaced apart from the collection box 6, so that leakage from the collection box 6 does not easily affect the normal conductivity of the third conductive element 23.

[0100] More specifically, see Figure 2 and Figure 3 The electrocoagulation biopsy needle includes a puncture assembly 1 for puncture operations and a cutting assembly 2 for cutting operations. The puncture assembly 1 includes a puncture tube 11 and a puncture head 12 disposed at the front end of the puncture tube 11. A sampling groove 3 is formed on the outer wall of the front end of the puncture tube 11. The cutting assembly 2 includes a cutting tube 21, the front end of which is provided with a cutting section 22. The cutting tube 21 is disposed inside the puncture tube 11 and can reciprocate along the axial direction of the puncture tube 11.

[0101] The puncture tube 11 and the puncture head 12 are insulated from each other. A first electrode A is formed on the outer wall of the puncture tube 11, a second electrode B is formed on the outer surface of the puncture head 12, and a third electrode C is formed on the cutting section 22. Two of the first electrode A, the second electrode B, and the third electrode C are electrically connected to the first polarity terminal of the energy source 7, and the other electrode is electrically connected to the second polarity terminal of the energy source 7. This allows two of the first electrode A, the second electrode B, and the third electrode C to form positive and negative electrodes of the corresponding coagulation circuit with the other electrode, enabling the energy source 7 to apply energy to the puncture assembly 1 or the cutting assembly 2, thereby achieving hemostasis at the puncture site at the puncture head 12 or the cutting section 22 at the cutting section 22.

[0102] In summary, the electrocoagulation biopsy kit of this application can apply energy to the puncture assembly 1 and / or the cutting assembly 2 through the energy source 7 of the electrocoagulation biopsy needle. The energy passes through the first electrode A, the second electrode B, and the third electrode C, thereby enabling hemostasis at the site punctured by the puncture head 12 and the site cut by the cutting part 22 by connecting to the corresponding coagulation circuit. This improves the hemostasis effect on wound tissue during biopsy sampling. At the same time, two of the first electrode A, the second electrode B, and the third electrode C can form the positive and negative electrodes of the corresponding coagulation circuit with the other electrode, that is, one of the electrodes serves as a common electrode, which helps to simplify the equipment structure and reduce costs.

[0103] See Figure 1 This application also provides an electrocoagulation biopsy device, including an electrocoagulation biopsy kit and a biopsy host. The electrocoagulation biopsy kit includes a biopsy handle and an electrocoagulation biopsy needle as described in any of the above embodiments, with the electrocoagulation biopsy needle detachably connected to the biopsy handle. Specifically, the biopsy handle and the electrocoagulation biopsy needle are fitted together with a housing 5 for accommodating the puncture assembly 1 and the cutting assembly 2. The biopsy host is detachably connected to the biopsy handle, and the biopsy host contains an energy source 7. The energy source 7 has a first polarity terminal and a second polarity terminal with opposite polarities. The electrocoagulation biopsy needle is electrically connected to the energy source 7 through the first polarity terminal and the second polarity terminal.

[0104] See Figure 1 and Figure 2 More specifically, the electrocoagulation biopsy needle includes a puncture assembly 1 for performing puncture operations and a cutting assembly 2 for performing cutting operations. The puncture assembly 1 includes a puncture tube 11 and a puncture head 12 disposed at the front end of the puncture tube 11. A sampling groove 3 is formed on the outer wall of the front end of the puncture tube 11. The cutting assembly 2 includes a cutting tube 21, the front end of which is provided with a cutting section 22. The cutting tube 21 is disposed inside the puncture tube 11 and can reciprocate along the axial direction of the puncture tube 11.

[0105] The puncture tube 11 and the puncture head 12 are insulated from each other. A first electrode A is formed on the outer wall of the puncture tube 11, a second electrode B is formed on the outer surface of the puncture head 12, and a third electrode C is formed on the cutting section 22. Two of the first electrode A, the second electrode B, and the third electrode C are electrically connected to the first polarity terminal of the energy source 7, and the other electrode is electrically connected to the second polarity terminal of the energy source 7. This allows two of the first electrode A, the second electrode B, and the third electrode C to form positive and negative electrodes of the corresponding coagulation circuit with the other electrode, enabling the energy source 7 to apply energy to the puncture assembly 1 or the cutting assembly 2, thereby achieving hemostasis at the puncture site at the puncture head 12 or the cutting section 22 at the cutting section 22.

[0106] In summary, the electrocoagulation biopsy device of this application can apply energy to the puncture assembly 1 and / or the cutting assembly 2 through the energy source 7 of the electrocoagulation biopsy needle. The energy passes through the first electrode A, the second electrode B, and the third electrode C, thereby enabling hemostasis at the site punctured by the puncture head 12 and the site cut by the cutting part 22 by connecting to the corresponding coagulation circuit. This improves the hemostasis effect on wound tissue during biopsy sampling. At the same time, two of the first electrode A, the second electrode B, and the third electrode C can form the positive and negative electrodes of the corresponding coagulation circuit with the other electrode, that is, one of the electrodes serves as a shared electrode, which helps to simplify the equipment structure and reduce costs.

[0107] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0108] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. An electrocoagulation biopsy needle, characterized in that, include: The puncture assembly includes a puncture tube and a puncture head disposed at the front end of the puncture tube, wherein a sampling groove is formed on the outer wall of the front end of the puncture tube. A cutting assembly includes a cutting tube with a cutting section at its front end. The cutting tube is disposed inside the puncture tube and can reciprocate along the axial direction of the puncture tube, so that the cutting section can cut the tissue entering the puncture tube from the sampling groove. The puncture tube and the puncture head are insulated from each other. A first electrode is formed at the front end of the puncture tube, a second electrode is formed on the outer surface of the puncture head, and a third electrode is formed in the cutting part. Two of the first, second, and third electrodes are electrically connected to the first polarity terminal of the energy source, and the other electrode is electrically connected to the second polarity terminal of the energy source, so that two of the first, second, and third electrodes can form positive and negative electrodes of the corresponding coagulation circuit with the other electrode respectively.

2. The electrocoagulation biopsy needle according to claim 1, characterized in that, The first electrode is used to be electrically connected to the first polarity terminal of the energy source, and the second electrode and the third electrode are both used to be electrically connected to the second polarity terminal of the energy source, so that the first electrode and the second electrode can form a pair of positive and negative electrodes for the needle tip coagulation circuit, and the first electrode and the third electrode can form a pair of positive and negative electrodes for cutting the coagulation circuit.

3. The electrocoagulation biopsy needle according to claim 1, characterized in that, The outer wall of the puncture tube includes: A first insulating region, the first insulating region being covered by a first insulating layer; The first exposed area is located at the front end of the first insulating area to form the first electrode; The first electrical connection region is used for electrical connection with the second polarity terminal of the energy source.

4. The electrocoagulation biopsy needle according to claim 3, characterized in that, The puncture assembly further includes an insulating sleeve, the puncture head includes a tip, and the insulating sleeve is axially spaced between the tip and the puncture tube.

5. The electrocoagulation biopsy needle according to any one of claims 1 to 4, characterized in that, The puncture assembly further includes a conductive tube, which is fitted inside the puncture tube and outside the cutting tube. The conductive tube is insulated from both the puncture tube and the cutting tube. The puncture head is connected to the front end of the conductive tube so that the puncture head is electrically connected to the first polarity terminal of the energy source via the conductive tube.

6. The electrocoagulation biopsy needle according to claim 5, characterized in that, The outer wall of the conductive tube includes: The second insulating region is covered with a second insulating layer for insulating the conductive tube from the puncture tube. The second electrical connection area is used for electrical connection with the first polarity terminal of the energy source.

7. The electrocoagulation biopsy needle according to claim 5, characterized in that, The outer wall of the cutting tube includes: The third insulation zone is covered with a third insulation layer for insulating the puncture tube and the cutting tube; The second exposed area is correspondingly provided on the cut portion to form the third electrode; The third electrical connection area is used for electrical connection with the second polarity terminal of the energy source.

8. The electrocoagulation biopsy needle according to claim 1, characterized in that, The electrocoagulation biopsy needle also includes a drive assembly connected to the cutting tube to drive the cutting tube to reciprocate and / or rotate axially within the puncture tube. The puncture tube is connected to a first conductive element, the puncture head is connected to a second conductive element, and the cutting tube is connected to a third conductive element. Two of the first, second, and third conductive elements are used to connect to the first polarity terminal of the energy source, and the other of the first, second, and third conductive elements are used to connect to the second polarity terminal of the energy source. The first conductive element and the second conductive element are both arranged in front of the driving assembly along the axial direction of the cutting tube, and the third conductive element is arranged behind the driving assembly along the axial direction of the cutting tube.

9. An electrocoagulation biopsy kit, characterized in that, It includes a biopsy handle and an electrocoagulation biopsy needle as described in any one of claims 1-8, wherein the electrocoagulation biopsy needle is detachably connected to the biopsy handle.

10. An electrocoagulation biopsy device, characterized in that, include: An electrocoagulation biopsy kit, comprising a biopsy handle and an electrocoagulation biopsy needle as described in any one of claims 1-8, wherein the electrocoagulation biopsy needle is detachably connected to the biopsy handle; The biopsy host is detachably connected to the biopsy handle. The biopsy host is equipped with an energy source, which has a first polarity terminal and a second polarity terminal with opposite polarities.

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