Electrocoagulation biopsy needle, electrocoagulation biopsy kit and electrocoagulation biopsy device

Abstract

The invention relates to an electrocoagulation biopsy needle, an electrocoagulation biopsy kit and an electrocoagulation biopsy device.A puncture tube of a puncture assembly of the electrocoagulation biopsy needle is insulated from a puncture head of a cutting assembly, a first electrode is formed on the outer wall of the puncture tube, a second electrode is formed on the outer surface of the puncture head, and a third electrode is formed on a cutting part of the cutting assembly; two of the first electrode, the second electrode and the third electrode are used for being electrically connected with a negative terminal of an energy source, and the other one of the first electrode, the second electrode and the third electrode is used for being electrically connected with a positive terminal of the energy source; according to the electro-coagulation biopsy needle, the electro-coagulation biopsy kit and the electro-coagulation biopsy device, energy can be applied to the puncture assembly or the cutting assembly through the energy source, then hemostasis is conducted on the puncture part located at the puncture head or the cutting part located at the cutting part, and the puncture and cutting blood coagulation loops share one connecting terminal, so that the puncture and cutting blood coagulation loops can be connected with the connecting terminal. The equipment structure is effectively simplified; and the operation convenience is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to an electrocoagulation biopsy needle, an electrocoagulation biopsy kit and an electrocoagulation biopsy device. BACKGROUND

[0002] The electrocoagulation biopsy needle integrates the function of electrocoagulation on the basis of the function of a conventional biopsy needle, and is applied to an electrocoagulation biopsy device to remove or sample a lesion in a minimally invasive surgery process and to stop bleeding or accelerate removal of the lesion by the electrocoagulation function of the electrocoagulation biopsy needle in the surgery process.

[0003] The conventional electrocoagulation biopsy needle sets an electrode at a sampling groove on the outer wall of a puncture tube and a cutting part at the front end of a cutting tube to stop bleeding at a wound site after cutting tissue, but the electrocoagulation biopsy needle cannot stop bleeding at a puncture site. To solve the problem, a new electrocoagulation biopsy needle is provided with a wire in a ventilation passage between an outer knife tube and an inner knife tube to deliver energy to a knife tip to stop bleeding at the knife tip. However, the wire is difficult to pass into the narrow ventilation passage, and if the knife tip and the wire pad are large, the arrangement position of other components in the puncture tube may be affected, and if the knife tip and the wire pad are small, the wire may fall off under the action of airflow in the ventilation passage. SUMMARY

[0004] Therefore, it is necessary to provide an electrocoagulation biopsy needle, an electrocoagulation biopsy kit and an electrocoagulation biopsy device to solve the above problems of the electrocoagulation biopsy needle and to ensure the effect of stopping bleeding while avoiding the problems of limited arrangement position of other components in the puncture tube caused by the wire and the risk of falling off of the wire.

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

[0006] A puncture assembly comprises a puncture tube, a puncture head insulated and arranged at the front end of the puncture tube, and a conductive tube insulated and sleeved in the puncture tube, a sampling groove is formed on the outer wall of the front end of the puncture tube, the front end of the puncture tube forms a first electrode, and the puncture head is in fixed electrical contact with the front end of the conductive tube to form a second electrode on the outer surface of the puncture head;

[0007] A cutting assembly comprises a cutting tube, the front end of the cutting tube is provided with a cutting part, the cutting tube is arranged in the puncture tube and can reciprocate along the axial direction of the puncture tube, so that the cutting part can cut the tissue entering the puncture tube from the sampling groove, and the cutting part forms a third electrode;

[0008] The first electrode is used for electrical connection with a negative terminal of an energy source, and the second electrode and the third electrode are both used for electrical connection with a positive terminal of the energy source, so that the first electrode and the second electrode can form a pair of positive and negative electrodes of a needle tip coagulation loop, and the first electrode and the third electrode can form a pair of positive and negative electrodes of a cutting coagulation loop.

[0009] In one of the embodiments, the outer wall of the puncture tube comprises:

[0010] The first insulation region is coated with a first insulation layer;

[0011] The first exposed region is arranged at the front end of the first insulation region to form the first electrode;

[0012] The first electrical connection region is provided with a first conductive member for electrical connection with the negative terminal.

[0013] In one of the embodiments, the puncture assembly further comprises an insulation sleeve, the puncture head comprises a pointed portion, and the insulation sleeve is axially separated between the pointed portion and the puncture tube.

[0014] In one of the embodiments, the outer wall of the conductive tube comprises:

[0015] The second insulation region is coated with a second insulation layer for insulating the conductive tube from the puncture tube;

[0016] The second electrical connection region is provided with a second conductive member for electrical connection with the positive terminal of the energy source.

[0017] In one of the embodiments, the outer wall of the cutting tube comprises:

[0018] The third insulation region is coated with a third insulation layer for insulating the puncture tube and the cutting tube;

[0019] The second exposed region is arranged at the cutting portion to form the third electrode;

[0020] The third electrical connection region is provided with a third conductive member for electrical connection with the positive terminal of the energy source.

[0021] In one of the embodiments, the electrocoagulation biopsy needle further comprises a driving assembly connected with the cutting tube to drive the cutting tube to reciprocate and / or rotate axially in the puncture tube;

[0022] The puncture tube is connected with a first conductive member, the puncture head is connected with a second conductive member, and the cutting tube is connected with a third conductive member. Two of the first, second and third conductive members are used to connect a negative terminal of the energy source, and the other of the first, second and third conductive members is used to connect a positive terminal of the energy source.

[0023] The first and second conductive members are arranged in front of the driving assembly along the axial direction of the cutting tube, and the third conductive member is arranged behind the driving assembly along the axial direction of the cutting tube.

[0024] In one embodiment, the electrocoagulation biopsy needle further comprises:

[0025] A housing in which the driving assembly is accommodated, and the puncture tube and the rear end of the conductive tube are fixedly arranged in the housing. The front end of the housing is provided with a notch, and the notch is provided with a mounting member. The first and second conductive members are arranged in the mounting holes of the mounting member.

[0026] A direction adjusting sleeve is fixedly arranged outside the puncture tube. The direction adjusting sleeve is arranged at the front end of the housing and covers part of the notch, so that part of the mounting member is limited in the direction adjusting sleeve in the radial direction. The first and second conductive members are exposed behind the direction adjusting sleeve.

[0027] In one embodiment, the rear end of the puncture tube is fixedly provided with a puncture tube fixing seat. The mounting member is arranged between the puncture tube fixing seat and the direction adjusting sleeve in the radial direction.

[0028] According to another aspect of the present application, an electrocoagulation biopsy kit is provided, comprising a biopsy handle and an electrocoagulation biopsy needle as described in any one of the above embodiments. The electrocoagulation biopsy needle is detachably connected with the biopsy handle.

[0029] According to another aspect of the present application, an electrocoagulation biopsy device is provided, comprising:

[0030] An electrocoagulation biopsy kit, comprising a biopsy handle and an electrocoagulation biopsy needle as described in any one of the above embodiments. The electrocoagulation biopsy needle is detachably connected with the biopsy handle.

[0031] A biopsy host machine is detachably connected with the biopsy handle. The biopsy host machine is provided with an energy source. The energy source has a negative terminal and a positive terminal with opposite polarity.

[0032] 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 is then applied to the puncture site by the puncture head and the cutting site by the cutting part via the first electrode, second electrode, and third electrode. This ensures that both the puncture site and the cutting site can coagulate during the procedure, guaranteeing hemostasis. Furthermore, the first electrode serves as a common electrode, which simplifies the equipment structure and reduces costs. Moreover, the use of a conductive tube instead of a wire avoids the problems of affecting the placement of other components and the risk of wire detachment caused by connecting the puncture head with a wire. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the structure of an electrocoagulation biopsy device according to some embodiments of this application.

[0034] Figure 2 for Figure 1 A magnified view of part A.

[0035] Figure 3 This is a schematic diagram of the structure of an electrocoagulation biopsy kit according to some embodiments of this application.

[0036] Figure 4 for Figure 1 A magnified view of part B.

[0037] Figure 5 for Figure 1 A magnified view of part C.

[0038] Figure 6 for Figure 1 A magnified view of part D.

[0039] Figure 7 This is a partial structural schematic diagram of the electrocoagulation biopsy needle according to some embodiments of this application.

[0040] 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.

[0041] Figure 9 This is a schematic diagram of the structure of an electrocoagulation biopsy device according to some embodiments of this application.

[0042] Figure 10 for Figure 9 Top view.

[0043] Figure 11 for Figure 9 A magnified view of part E in the middle.

[0044] Figure 12 for Figure 10 A magnified view of part D in the middle.

[0045] Figure label:

[0046] 1. Puncture assembly;

[0047] 11. Puncture tube; 111. First insulation zone; 112. First exposed zone; 113. First electrical connection zone;

[0048] 12. Piercing head; 121. Tip; 122. Connecting part;

[0049] 13. Insulating sleeve;

[0050] 14. Conductive tube; 141. Second insulation zone; 142. Second electrical connection zone;

[0051] 15. First conductive element; 16. Second conductive element;

[0052] 17. Puncture tube fixation seat;

[0053] 2. Cutting components;

[0054] 21. Cutting tube; 211. Third insulation zone; 212. Second exposed zone; 213. Third electrical connection zone;

[0055] 22. Cutting section; 23. Third conductive component;

[0056] 3. Sampling groove; 31. First front end contour;

[0057] 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;

[0058] 5. Outer casing; 51. Mounting components;

[0059] 6. Collection box;

[0060] 7. Energy source;

[0061] 8. Direction adjustment sleeve;

[0062] A. First electrode; B. Second electrode; C. Third electrode. Detailed Implementation

[0063] 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.

[0064] 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.

[0065] 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.

[0066] 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.

[0067] 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.

[0068] 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.

[0069] 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.

[0070] The electrocautery biopsy needle includes a puncture assembly 1 for performing puncture operations and a cutting assembly 2 for performing cutting operations.

[0071] See Figure 1 and Figure 2 , Figure 3 , Figure 4 The puncture assembly 1 includes a puncture tube 11, a puncture head 12 insulated at the front end of the puncture tube 11, and a conductive tube 14 insulated and fitted inside the puncture tube 11. A sampling groove 3 is formed on the outer wall of the front end of the puncture tube 11. The puncture tube 11 has a rear end and a front end arranged along its axial direction. The puncture head 12 is located on the front end of the puncture tube 11 and has a tip for penetrating skin, tissue, or other target materials. The puncture head 12 is insulated from the puncture tube 11. 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, some tissue will enter the sampling groove 3 under negative pressure. The conductive tube 14 is also insulated from the puncture tube 11. The front end of the puncture head 12 is fixedly connected to the conductive tube 14 and is in electrical contact with it, meaning that the conductive tube 14 can transfer energy to the puncture head 12.

[0072] 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 11 and collect the tissue.

[0073] For further details, please refer to [link / reference]. Figure 1 , Figure 2 and Figure 7The puncture tube 11 has a first electrode A at its tip, the puncture head 12 has a second electrode B on its outer surface, and the cutting section 22 has a third electrode C. The first electrode A is electrically connected to the negative terminal of the energy source 7, while the second electrode B and the third electrode C are electrically connected to the positive terminal of the energy source 7. This allows the first electrode A and the second electrode B to form a pair of positive and negative electrodes for the needle tip coagulation circuit, and the first electrode A and the third electrode C to form a pair of positive and negative electrodes for the cutting coagulation circuit. The energy source 7 can apply energy through the conductive tube 14 to stop bleeding at the puncture site at the puncture head 12, or it can apply energy to the cutting assembly 2 to stop bleeding at the cutting section 22. This allows the electrocoagulation biopsy needle to apply energy to the wound site during or after sampling, achieving effective hemostasis. 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, current is applied 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 facilitates energy coverage of the punctured wound tissue, resulting in good hemostasis at the puncture site. In the needle tip coagulation circuit, current is applied 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 cut site. Furthermore, the first electrode formed at the front end of the puncture tube is used as the negative electrode of the corresponding circuit for both hemostasis at the puncture site and the cut site, which simplifies the structure of the entire electrocoagulation biopsy needle and reduces costs. Furthermore, by using the conductive tube 14 instead of the wire, various problems caused by setting up a wire to connect the piercing head 12 are avoided.

[0074] In this application, the puncture tube 11, the puncture head 12, and the cutting tube 21 are all made of conductive materials.

[0075] It should be noted that in the above embodiments, energy source 7 can be used to generate high-frequency current. It should also be emphasized that the corresponding appendix in this embodiment... 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 negative terminal and two positive terminals. The negative terminal is electrically connected to the first electrode A, and the positive 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 positive 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.

[0076] 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.

[0077] Meanwhile, both the needle tip coagulation circuit and the cutting coagulation circuit use the first electrode A as the negative electrode, which simplifies the overall structure of the electrocoagulation biopsy needle, reduces costs, and facilitates control over the diameter of the puncture needle, thereby controlling the size of the incision during the patient's puncture. Therefore, the electrocoagulation biopsy needle of this application has significant advantages.

[0078] 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 provided with a first conductive element 15, which is used for electrical connection with the negative terminal of the energy source 7, so that the negative terminal of the energy source 7 can be electrically connected to the first electrode A through the first conductive element 15 in the first electrical connection region 113 and the puncture tube 11 itself.

[0079] 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.

[0080] 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.

[0081] 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.

[0082] 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.

[0083] 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 provided with a second conductive element 16, which is used to electrically connect with the positive terminal of the energy source 7, so that the energy source 7 can apply energy to the puncture head 12 through the positive terminal, the second conductive element 16, and the conductive tube 14 itself, 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 to insulate the conductive tube 14 from the puncture tube 11, so as to prevent the conductive tube 14 from short-circuiting with the puncture tube 11 when the energy source 7 applies energy to the conductive tube 14.

[0084] 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.

[0085] 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.

[0086] 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 located at the cutting section 22 to form the third electrode C. The third electrical connection region 213 is provided with a third conductive element 23, which is used for electrical connection with the positive terminal of the energy source 7, so that the positive terminal of the energy source 7 can be electrically connected to the third electrode C through the third conductive element 23 and the cutting tube 21 itself.

[0087] 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.

[0088] 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.

[0089] 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:

[0090] 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.

[0091] 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.

[0092] 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.

[0093] 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.

[0094] 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.

[0095] 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.

[0096] 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.

[0097] 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. The first conductive element 15 is used to connect to the negative terminal of the energy source 7, and the second conductive element 16 and the third conductive element 23 are used to connect to the positive 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.

[0098] 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. This ensures that the first conductive element 15 is electrically connected to the negative terminal of the energy source 7, and the second conductive element 16 and the third conductive element 23 are both electrically connected to the positive 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.

[0099] In this configuration, 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. This means that 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.

[0100] 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.

[0101] In one embodiment, see Figures 9 to 12The electrocautery biopsy needle also includes a housing 5 and a direction adjustment sleeve 8. The drive assembly 4 is housed within the housing 5. The puncture tube 11 and the conductive tube 14 are both fixedly inserted into the housing 5. The front end of the housing 5 has a notch, within which a mounting member 51 is installed. The first conductive member 15 and the second conductive member 16 are both inserted into mounting holes in the mounting member 51. The direction adjustment sleeve 8 is fixedly fitted over the puncture tube 11. The direction adjustment sleeve 8 is located at the front end of the housing 5 and partially covers the notch, so that a portion of the mounting member 54 is radially confined within the direction adjustment sleeve 8. The first conductive member 15 and the second conductive member 16 are both exposed behind the direction adjustment sleeve. With this structure, the direction adjustment sleeve 8 can radially confine the mounting member 51, preventing it from radially detaching from the housing 5. During the manufacturing process, the first conductive component 15 and the second conductive component 16 can be fixed in the mounting holes opened on the mounting component 51 by bonding, welding or other means. Then, the mounting component 51 can be fitted into the notch at the front end of the outer shell 5 by snap-fitting, welding or other means. Then, the direction adjustment sleeve 8 can be installed at the front end of the outer shell 5 to facilitate the installation of the first conductive component 15 and the second conductive component 16.

[0102] Optionally, a puncture tube fixing seat 17 is fixedly sleeved at the rear end of the puncture tube 11, and the mounting component 51 is radially disposed between the puncture tube 11 fixing seat and the direction adjustment sleeve 8.

[0103] 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 and the biopsy handle are detachably connected. Specifically, a motor is provided inside the biopsy handle, and the power of the motor can be delivered to the cutting tube 21 after the outer shell 5 of the electrocoagulation biopsy needle is engaged with 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 from the collection box 6, so that leakage from the collection box 6 will not easily affect the normal conductivity of the third conductive element 23.

[0104] 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, the first electrode A serves as a common electrode, forming corresponding coagulation circuits with the second electrode B and the third electrode C, which helps to simplify the equipment structure and reduce costs. Furthermore, the use of conductive tubes instead of wires avoids various problems caused by the installation of wires.

[0105] SeeFigure 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, the electrocoagulation biopsy needle being detachably connected to the biopsy handle. The biopsy host is detachably connected to the biopsy handle, and the biopsy host contains an energy source 7. The energy source 7 has negative and positive terminals with opposite polarities, and the electrocoagulation biopsy needle is electrically connected to the energy source 7 through the negative and positive terminals.

[0106] 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, the first electrode A serves as a common electrode, forming corresponding coagulation circuits with the second electrode B and the third electrode C, which helps to simplify the equipment structure and reduce costs. Furthermore, the use of conductive tubes instead of wires avoids various problems caused by the installation of wires.

[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, a puncture head insulated at the front end of the puncture tube, and a conductive tube insulated inside the puncture tube. A sampling groove is formed on the outer wall of the front end of the puncture tube. A first electrode is formed at the front end of the puncture tube. The puncture head is in fixed electrical contact with the front end of the conductive tube so that a second electrode is formed on the outer surface of the puncture head. A cutting assembly includes a cutting tube, the front end of which is provided with a cutting section. 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 cutting section is formed with a third electrode. Wherein, the first electrode is electrically connected to the negative terminal of the energy source, and the second electrode and the third electrode are both electrically connected to the positive 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.

2. 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; A first electrical connection region is provided with a first conductive element, which is used to electrically connect with the negative terminal.

3. The electrocoagulation biopsy needle according to claim 2, 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.

4. The electrocoagulation biopsy needle according to claim 1, 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 region is provided with a second conductive element, which is used to electrically connect to the positive terminal of the energy source.

5. The electrocoagulation biopsy needle according to claim 1, 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 region is provided with a third conductive element, which is used to electrically connect with the positive terminal of the energy source.

6. 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. The first conductive element is used to connect to the negative terminal of the energy source, and the second and third conductive elements are used to connect to the positive 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.

7. The electrocoagulation biopsy needle according to claim 6, characterized in that, The electrocoagulation biopsy needle also includes: The housing contains the drive assembly, and the rear ends of the puncture tube and the conductive tube are fixedly inserted into the housing. The front end of the housing has a notch, and an installation component is installed in the notch. The first conductive component and the second conductive component are both inserted into the installation holes opened on the installation component. A directional adjustment sleeve is fixedly fitted outside the puncture tube. The directional adjustment sleeve is fitted at the front end of the outer shell and covers part of the notch so that a portion of the mounting component is radially confined within the directional adjustment sleeve. Both the first conductive element and the second conductive element are exposed behind the directional adjustment sleeve.

8. The electrocoagulation biopsy needle according to claim 7, characterized in that, The rear end of the puncture tube is fixedly fitted with a puncture tube fixing seat, and the mounting component is radially disposed between the puncture tube fixing seat and the direction adjustment sleeve.

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 negative terminal and a positive terminal with opposite polarities.

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