Bone tissue biopsy sampling tool

Abstract

The invention discloses a bone tissue biopsy sampling tool, which belongs to the field of medical instruments, is ingenious in conception, simple in structure, good in reliability and flexible and convenient to operate, can realize rapid and sufficient sampling of bone samples, has the characteristic of small wound area, and is beneficial to reducing the pain of patients. The first rod-shaped sampling needle comprises a first rod-shaped sampling needle and a first sleeve matched with the first rod-shaped sampling needle, and the first sleeve is in a straight pipe shape; the first rod-shaped sampling needle comprises a first needle rod, a first inclined cutting edge and a first threaded section; marking one end, in contact with a bone sample to be taken, of the first needle rod as a first insertion end, and marking the other end of the first needle rod as a first rotating end; the first inclined cutting edge and the first threaded section are sequentially arranged on the first needle rod in the direction from the first inserting end to the first rotating end. The bone sampling device is ingenious in conception, reasonable in design, convenient to use, simple to operate and easy to maintain, the bone sampling efficiency can be greatly improved, and the bone sampling device has high application value and good application prospects.

Description

Technical Field

[0001] This invention relates to the field of medical devices, particularly to the field of orthopedic puncture, specifically to a bone tissue biopsy sampling tool. Background Technology

[0002] In modern medicine, sampling and testing are important diagnostic methods. Common medical testing methods include blood tests, tissue biopsies, liquid biopsies, and gene testing sampling. In orthopedics, small bone tissue samples are typically collected from a patient's bones for diagnostic purposes, and a bone sampler is a medical device used to collect these samples.

[0003] To address the needs of bone sampling, researchers have conducted extensive studies. For example, Chinese patent application CN108354657B discloses a bone biopsy needle, comprising: a puncture needle and a gripper base. The puncture needle is hollow and is located on one side of the gripper base. It also includes a cutting component and a traction component. The puncture needle has a collection hole on its side near the needle tip for bone marrow to enter the needle body. The cutting component is located inside the puncture needle and includes a cutting blade that can slide into or out of the collection hole to cut the bone marrow tissue within the collection hole. The traction component is located on the gripper base and is linked to the cutting blade. When the traction component drives the cutting blade to close the collection hole, the cutting is completed.

[0004] Chinese patent application CN103340657B discloses a bone tissue puncture biopsy needle assembly, including a positioning cannula and a through needle. The positioning cannula has a handle with a foldable positioning arm. A puncture sampling needle is fitted inside the positioning cannula. The puncture sampling needle consists of a needle shaft and a handle. The handle has a positioning groove corresponding to the positioning arm. The front end of the needle shaft is a solid conical needle tip with a sampling hole. The sampling hole has a cutting edge at its opening and communicates with the central hole of the needle shaft. The inner diameter of the needle shaft is less than 1 / 3 of its outer diameter, and the length of the needle shaft is greater than the length of the outer needle cannula. The through needle is fitted inside the central hole of the needle shaft, and its length is greater than the length of the needle shaft. It relies on the puncture sampling needle as a support for puncture and can simultaneously collect samples.

[0005] Chinese patent application CN111358505B discloses a minimally invasive bone marrow biopsy needle, which includes a needle tube, a first needle core, and a second needle core. The needle tube has a main handle at its tail end, and the first and second needle cores each have a secondary handle at their tail ends. The first needle core has a triangular conical head at its front end, and a first channel extending to its tail end face is provided in the center of the first needle core. Each of the three conical surfaces of the triangular conical head has a connecting channel communicating with the first channel. The second needle core has a second channel extending through its center, and a separation vertebra is provided on the inner cylindrical wall at the front end of the second needle core. The tip of the separation vertebra faces the center of the second needle core, and the separation vertebra is triangular in shape.

[0006] Chinese patent application CN108420464B discloses a biopsy sampling device, comprising: a guide needle, the guide needle including a needle hub and a needle tube connected to the needle hub, the needle hub and the needle tube being separable, the needle tube being used to puncture into a target tissue site; an outer sheath, the outer sheath including an outer sheath fixing part and a cutting sheath part, the outer sheath fixing part being connected to one end of the cutting sheath part and being left outside the body, the other end of the cutting sheath part having a cutting head, the cutting sheath part being able to be fitted onto the needle tube and being able to cut along the needle tube into the target tissue site through the cutting head; and a sampling core, the sampling core including a sampling fixing part and a sampling sheath part, the sampling fixing part being connected to one end of the sampling sheath part and being able to be limited and fitted with the outer sheath fixing part, the other end of the sampling sheath part having a sampling head, the sampling sheath part being used to insert into the cutting sheath part and being able to be inserted along the cutting sheath part and / or the needle tube into the sampling site.

[0007] Chinese patent application CN109512471B discloses a bone marrow biopsy puncture sampling device, which includes a needle sheath seat and a needle seat. The lower part of the needle sheath seat is provided with a puncture sheath, and the lower part of the needle seat is provided with a puncture needle. The upper part of the needle sheath seat is provided with a locking device, and the lower part of the needle seat is provided with a locking head that cooperates with the locking device on the outside of the puncture needle. The puncture needle is inserted into the puncture sheath and connected through the locking device and the locking head. The locking head is an external thread coaxial with the puncture needle. The locking device includes a rotating sleeve and a pushing rod. The rotating sleeve is arranged coaxially with the puncture sheath on the upper part of the needle sheath seat. The rotating sleeve is provided with an internal thread that cooperates with the locking head. The rotating sleeve is provided with a gear part. The pushing rod is provided with a rack part in the middle that cooperates with the gear part. The needle sheath seat is provided with a locking groove for sliding connection with the pushing rod. The locking groove passes through the needle sheath seat, and the pushing rod is longer than the locking groove.

[0008] Chinese patent application CN114983491B discloses a biopsy needle, a biopsy needle assembly, and a bone marrow biopsy device. The biopsy needle includes an outer tube, an inner tube, and a needle tip assembly. The outer tube has an opening with a cutting surface for cutting bone marrow tissue. The inner tube is disposed inside the outer tube and has a receiving cavity communicating with the opening for accommodating bone marrow tissue. A first space exists between the inner and outer tubes. The needle tip assembly is disposed within the first space and can selectively extend out of the first space to form a needle tip and close the receiving cavity. Using this method, the amount of bone marrow tissue obtained can be controlled by the puncture depth, ensuring that a sufficient and complete amount can be collected in a single puncture, which is beneficial for subsequent pathological diagnosis.

[0009] Chinese patent application CN11118538B discloses a percutaneous bone biopsy device, comprising a Kirschner wire, a core, and a percutaneous bone biopsy cannula. The core is fitted onto the Kirschner wire, with the tail of the Kirschner wire extending from the tail end of the core. The percutaneous bone biopsy cannula is fitted onto the core and has a gripping portion. The percutaneous bone biopsy cannula is a cylinder with an outer diameter of 4-6 mm and an internal axially oriented portion with a diameter of 2.5-4.5 mm. The percutaneous bone cannula has a 2.5-4.5 mm diameter needle core tunnel, with a circumferentially serrated head at the tip. The cannula is threaded to the needle core, and the tail end of the cannula has a rod-shaped grip perpendicular to the cannula. The needle core has a hollow structure with openings at both ends and an inner diameter of 1.1-1.2 mm. The Kirschner wire has a diameter of 1 mm. The Kirschner wire has a triangular pyramidal tip and a flattened tail. The length of the needle core is the same as the length of the percutaneous bone puncture cannula, with a 3cm external toothed spiral at the tip. During puncture, the percutaneous bone puncture cannula and needle core are integrated. The cannula is smoothly positioned to reach the lesion surface via a positioning needle. The needle core is then removed. Based on the size of the lesion and the scale on the cannula surface, the percutaneous bone puncture cannula is gradually rotated to enter the lesion, thereby determining the depth of entry and the required specimen volume. Once the ideal puncture position is obtained, the percutaneous bone puncture cannula is directly withdrawn. Because the specimen is tightly connected to the toothed internal spiral at the tip of the percutaneous bone puncture cannula, the specimen is fixed inside the cannula. Then, the needle core is screwed into the percutaneous bone puncture cannula to remove the specimen. The inner side of the tip of the percutaneous bone puncture cannula has an internal thread, and the outer side of the tip of the needle core has a matching external thread. The two are connected at the tip, which facilitates the fixation and removal of the lesion.

[0010] In existing technologies, hollow needle cores are mostly used as the main body for bone sampling. The bone sample is placed in the hollow structure inside the needle core to complete the corresponding sampling operation.

[0011] Improving bone sampling devices has become an urgent problem to be solved. Summary of the Invention

[0012] The purpose of this invention is to provide a bone tissue biopsy sampling tool that is ingeniously designed, simple in structure, reliable, flexible and convenient to operate, and can achieve rapid and sufficient bone sample collection. It also features a small invasive area, which helps reduce patient suffering.

[0013] To achieve the above objectives, the present invention adopts the following technical solution: A bone tissue biopsy sampling tool includes a first rod-shaped sampling needle and a first sleeve that cooperates with the first rod-shaped sampling needle, wherein the first sleeve is in the shape of a straight tube; The first rod-shaped sampling needle includes a first needle rod, a first oblique cutting edge, and a first threaded section; The end of the first needle bar that contacts the bone sample to be taken is designated as the first insertion end, and the other end of the first needle bar is designated as the first rotating end. Along the direction from the first insertion end to the first rotating end, the first oblique cutting edge and the first threaded segment are sequentially arranged on the first needle bar. The first oblique cutting edge and the first threaded segment are sequentially connected to form the first spiral cutting assembly, and the first oblique cutting edge can cut the bone sample to be taken under the drive of the first needle bar. The first needle bar is disposed inside the first sleeve and the first needle bar can move relative to the first sleeve; The first sleeve has a first cutting element at the end that contacts the bone sample to be taken, and the first cutting element can cut the bone sample to be taken. It may include a second rod-shaped sampling needle and a second sleeve that cooperates with the second rod-shaped sampling needle, wherein the second sleeve is in the shape of a straight tube; The second rod-shaped sampling needle includes a second needle rod, a second oblique cutting edge, a second threaded section, and a second cutting guard; The end of the second needle rod that contacts the bone sample to be taken is designated as the second insertion end, and the other end of the second needle rod is designated as the second rotating end. Along the direction from the second insertion end to the second rotating end, the second oblique cutting edge and the second threaded segment are sequentially arranged on the second needle rod. The second oblique cutting edge and the second threaded segment are sequentially connected to form the second spiral cutting assembly, and the second oblique cutting edge can cut the bone sample to be taken under the drive of the second needle rod. The second cutting protective component includes a second arc-shaped cutting edge and a second spiral protective strip. The second arc-shaped cutting edge and the second spiral protective strip are connected as one unit. The second arc-shaped cutting edge is located on the second spiral protective strip at one end near the second insertion end, and the second arc-shaped cutting edge can cut the bone sample to be taken under the drive of the second needle rod. The side of the second threaded segment closest to the second insertion end is designated as the second proximal side, and the side of the second threaded segment closest to the second rotating end is designated as the second distal side; the side of the second spiral protective strip closest to the second insertion end is designated as the second insertion side, and the side of the second spiral protective strip closest to the second rotating end is designated as the second rotating side. The second insertion edge is connected to the second distal side, and a second gap is formed between the second rotating edge and the second proximal side, and the bone sample located in the groove of the second spiral cutting assembly can be easily removed through the second gap. Alternatively, the second rotating edge is connected to the second proximal side, and a second gap is formed between the second insertion edge and the second distal side, and the bone sample located in the groove of the second spiral cutting assembly can be easily removed through the second gap. The second needle bar is disposed inside the second sleeve and is movable relative to the second sleeve; It may include a third rod-shaped sampling needle, a third sleeve that cooperates with the third rod-shaped sampling needle, and a third push rod, wherein the third sleeve is in the shape of a straight tube; The third rod-shaped sampling needle includes a third needle rod, a third oblique cutting edge, a third threaded section, and a third cutting protective component; The end of the third needle rod that contacts the bone sample to be taken is designated as the third insertion end, and the other end of the third needle rod is designated as the third rotating end. Along the direction from the third insertion end to the third rotating end, the third oblique cutting edge and the third threaded section are sequentially arranged on the third needle rod. The third oblique cutting edge and the third threaded section are sequentially connected, and the third oblique cutting edge can cut the bone sample to be taken under the drive of the third needle rod. The third cutting protective component includes a third arc-shaped cutting edge and a third spiral protective strip. The third arc-shaped cutting edge and the third spiral protective strip are connected as one unit. The third arc-shaped cutting edge is located on the third spiral protective strip at one end near the third insertion end, and the third arc-shaped cutting edge can cut the bone sample to be taken under the drive of the third needle rod. The side of the third threaded section closest to the third insertion end is designated as the third proximal side, and the side of the third threaded section closest to the third rotating end is designated as the third distal side; the side of the third spiral protective strip closest to the third insertion end is designated as the third insertion side, and the side of the third spiral protective strip closest to the third rotating end is designated as the third rotating side. The third insertion edge is connected to the third distal side, the third rotating edge is connected to the third proximal side, and the groove between the third spiral protective band and the third threaded section forms a third sample storage channel. Bone samples cut by the third oblique cutting edge and the third arc-shaped cutting edge can enter the third sample storage channel for temporary storage. The third sample storage channel is a hollow spiral columnar structure. The third ejector rod includes a third spiral rod-shaped part that cooperates with the third sample storage channel, and the third spiral rod-shaped part can be inserted into the third sample storage channel and eject the bone samples in the third sample storage channel. The third needle bar is disposed inside the third sleeve and can move relative to the third sleeve.

[0014] The first oblique cutting edge extends to the tip of the first needle bar; Or the second oblique cutting edge extends to the tip of the second needle bar; Or the third oblique cutting edge extends to the tip of the third needle bar.

[0015] The second spiral protective band and the groove of the second threaded section form a second semi-enclosed space along the circumference of the second needle bar, and the bone sample taken can be temporarily stored in the second semi-enclosed space; Alternatively, a third sample storage channel can be formed between the groove of the third spiral protective band and the third threaded section, which is closed along the circumference of the third needle rod, and the bone sample can enter the third sample storage channel for temporary storage.

[0016] Along the insertion direction, the first insertion end is located at the front end of the first needle bar in the insertion direction; Alternatively, along the insertion direction, the second insertion end is located at the front end of the second needle bar in the insertion direction; Alternatively, along the insertion direction, the third insertion end is located at the front end of the third needle bar in the insertion direction.

[0017] The inclination angle of the first oblique cutting edge relative to the first needle bar is the same as the helix angle of the first threaded segment; Or the inclination angle of the second oblique cutting edge relative to the second needle bar is the same as the helix angle of the second threaded segment; Alternatively, the inclination angle of the third oblique cutting edge relative to the third needle bar may be the same as the helix angle of the third threaded segment.

[0018] The outer diameter of the first needle bar is smaller than the inner diameter of the first sleeve; Or the outer diameter of the second needle bar is smaller than the inner diameter of the second sleeve; Or the outer diameter of the third needle rod is smaller than the inner diameter of the third sleeve.

[0019] The first thread segment, the second thread segment, and the third thread segment are all single-threaded threads.

[0020] The lengths of the first spiral cutting component, the second spiral cutting component, and the third spiral cutting component are 0.5-15.0 cm, respectively.

[0021] The length of the second cutting guard is the same as the length of the second threaded segment, or the length of the second cutting guard is less than the length of the second threaded segment; Alternatively, the length of the third cutting protective component may be the same as the length of the third threaded segment, or the length of the third cutting protective component may be less than the length of the third threaded segment.

[0022] The second cutting protection component completely covers the second threaded section, or the second cutting protection component partially covers the second threaded section; The third cutting protective component may completely cover the third threaded section, or the third cutting protective component may partially cover the third threaded section.

[0023] The second cutting guard part covers the second threaded section; it also includes a second push rod, the second push rod including a second helical rod-shaped part that cooperates with the second threaded section, the second helical rod-shaped part being disposed on the second threaded section and being movable along the axial direction of the second threaded section; Alternatively, the third cutting protective component may partially cover the third threaded section; the third helical rod-shaped portion may be disposed on the third threaded section and may be movable axially along the third threaded section.

[0024] Preferably, the second push rod further includes a second linear connecting portion, which is integrally connected to the second helical rod-shaped portion.

[0025] The first rod-shaped sampling needle further includes a first handle that cooperates with the first needle rod, and the first handle is connected to the first rotating end of the first needle rod; Alternatively, the second rod-shaped sampling needle may also include a second handle that cooperates with the second needle rod, the second handle being connected to the second rotating end of the second needle rod; Alternatively, the third rod-shaped sampling needle may also include a third handle that cooperates with the third needle rod, the third handle being connected to the third rotating end of the third needle rod.

[0026] The first handle is rod-shaped and perpendicular to the first needle bar; Alternatively, the second handle may be rod-shaped and perpendicular to the second needle bar; Alternatively, the third handle may be rod-shaped, and the third handle may be perpendicular to the third needle rod.

[0027] The first cutting element is an arc-shaped cutting edge, a circular cutting edge, or a ring saw.

[0028] The projection of the second cutting guard on a cross-section perpendicular to the axis of the second needle bar is circular; Alternatively, the projection of the third cutting protective component onto a cross-section perpendicular to the axial direction of the third needle bar may be circular.

[0029] The projection of the second arc-shaped cutting edge onto a cross-section perpendicular to the axis of the second needle bar is an arc shape; Alternatively, the projection of the third arc-shaped cutting edge onto a cross-section perpendicular to the axis of the third needle bar may be an arc shape.

[0030] It also includes a first barrel handle that cooperates with the first sleeve, the first barrel handle being connected to the first sleeve and capable of driving the first sleeve to move synchronously; It may also include a second barrel handle that cooperates with the second sleeve, the second barrel handle being connected to the second sleeve and capable of driving the second sleeve to move synchronously; It may also include a third sleeve handle that cooperates with the third sleeve, the third sleeve handle being connected to the third sleeve and capable of driving the third sleeve to move synchronously.

[0031] The first cylinder handle is perpendicular to the first sleeve; Or the second cylinder handle is perpendicular to the second sleeve; Or the third cylinder handle is perpendicular to the third sleeve.

[0032] The first cylinder handle is located at one end of the first sleeve, and the first cutting element is located at the other end of the first sleeve.

[0033] The third push rod also includes a third linear connecting part, which is connected to the third helical rod-shaped part as a whole.

[0034] The second and third spiral protective belts are respectively spiral-shaped.

[0035] The second sleeve has a second cutting element at the end that contacts the bone sample to be taken; or the third sleeve has a third cutting element at the end that contacts the bone sample to be taken.

[0036] This application employs a novel sampling tool design, enabling successful bone sample collection. The application is ingeniously conceived, rationally designed, user-friendly, easy to operate and maintain, and can significantly improve bone sample collection efficiency, possessing high application value and promising application prospects.

[0037] In summary, by adopting the above-mentioned solution, this application has the following beneficial effects: (1) This application provides a convenient, safe and effective sampling tool for bone sampling, which can effectively improve the efficiency and safety of bone sampling; (2) This application can be widely used for bone sampling in orthopedic diseases such as osteomyelitis, myelodysplastic syndrome, and myelofibrosis; (3) This application allows physicians to accurately collect bone tissue samples at the required depth, which is crucial for pathological diagnosis; (4) This application is simple to operate, making it easy for doctors to get started quickly during the operation, reducing the operation time, enabling doctors to complete the puncture biopsy process quickly and accurately, and reducing the patient's discomfort and pain; (5) This application can effectively reduce damage to surrounding soft tissues and bone tissues, and reduce the risk of postoperative complications; (6) This application has a reasonable structure and is easy to use. When the single sampling amount is insufficient, multiple samplings can be easily carried out until the set sampling amount is reached, which greatly improves the work efficiency of medical staff. Attached Figure Description

[0038] The present invention will be described by way of example and with reference to the accompanying drawings, wherein: Figure 1 This is a schematic diagram of the bone tissue biopsy sampling tool in Example 1.

[0039] Figure 2 for Figure 1 A schematic diagram showing the principle after the second sleeve is cut open.

[0040] Figure 3 This is a schematic diagram of the structure of the second rod-shaped sampling needle in Example 1.

[0041] Figure 4 for Figure 3 A magnified view of part I in the diagram.

[0042] Figure 5 This is a schematic diagram showing the unfolding of the second cutting protective component along the spiral direction in Example 1.

[0043] Figure 6 This is a schematic diagram of the connection between the second sleeve and the second handle in Example 1.

[0044] Figure 7 This is a schematic diagram of the principle after the deformed pair of second sleeves are cut open in Example 1.

[0045] Figure 8 for Figure 7 A schematic diagram of the structure of the second rod-shaped sampling needle.

[0046] Figure 9 This is a schematic diagram of the principle after the second sleeve of the second variant is cut open in Example 1.

[0047] Figure 10 for Figure 9 A schematic diagram of the structure of the second rod-shaped sampling needle.

[0048] Figure 11 for Figure 10 A magnified view of part II.

[0049] Figure 12 This is a schematic diagram of the third rod-shaped sampling needle in Example 2.

[0050] Figure 13 for Figure 12 A magnified view of a portion of section III.

[0051] Figure 14 This is a schematic diagram of the bone tissue biopsy sampling tool in Example 3.

[0052] Figure 15 for Figure 14 A schematic diagram of the principle after the first sleeve is cut open.

[0053] Figure 16 This is a schematic diagram of the structure of the first rod-shaped sampling needle in Example 3.

[0054] Figure 17 for Figure 16 A magnified view of part IV in the middle.

[0055] Figure 18 This is a schematic diagram of the connection between the first sleeve and the first handle in Example 3.

[0056] The markings in the diagram are: 1. Second rod-shaped sampling needle; 2. Second needle rod; 3. Second threaded section; 4. Second oblique cutting edge; 5. Second handle; 6. Second cutting guard; 7. Second arc-shaped cutting edge; 8. Second spiral protective band; 9. Second sleeve; 10. Second handle; 11. Second slit one; 12. Second slit two; 22. Third needle rod; 23. Third threaded section; 24. Third oblique cutting edge; 25. Third handle; 26. Third cutting guard; 31. First rod-shaped sampling needle; 32. First needle rod; 33. First threaded section; 34. First oblique cutting edge; 35. First handle; 39. First sleeve; 40. First handle; 43. First cutting component. Detailed Implementation

[0057] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.

[0058] Any feature disclosed in this specification, unless otherwise stated, may be replaced by other equivalent or similar features. That is, unless otherwise stated, each feature is merely one example of a series of equivalent or similar features.

[0059] Example 1 In existing technologies, biopsy needles are mainly divided into vacuum-assisted biopsy (VAB), fine-needle aspiration biopsy (FNAB), and core needle biopsy (CNB). Among them, core needle biopsy (CNB) is the most common, which mainly utilizes the hollow groove inside the needle to achieve sampling. In practice, the inventors found that existing bone sample collection equipment generally suffers from problems such as inconvenient operation, insufficient sample volume, and difficulty in removing bone samples.

[0060] Unlike existing technologies, this embodiment provides a bone tissue biopsy sampling tool, comprising a second rod-shaped sampling needle and a second sleeve that cooperates with the second rod-shaped sampling needle. The second rod-shaped sampling needle includes a second needle shaft, a second oblique cutting edge, a second threaded section, and a second cutting guard. The second needle shaft is disposed within the second sleeve and is movable relative to the second sleeve. The end of the second needle shaft that contacts the bone sample to be collected is designated as the second insertion end, and the other end of the second needle shaft is designated as the second rotating end. Along the direction from the second insertion end to the second rotating end, the second oblique cutting edge and the second threaded section are sequentially disposed on the outer wall of the second needle shaft, with the second oblique cutting edge extending to the tip of the second needle shaft. Figure 4 As shown, the inclination angle of the second oblique cutting edge relative to the second needle bar is the same as the helix angle of the second threaded segment. The second oblique cutting edge and the second threaded segment are connected in sequence to form the second helical cutting assembly. With this structure, the second oblique cutting edge rotates synchronously under the drive of the second needle bar, and the bone sample to be taken is cut when the second oblique cutting edge rotates.

[0061] like Figure 5 As shown, the second cutting guard includes a second arc-shaped cutting edge and a second spiral protective strip, with the second arc-shaped cutting edge and the second spiral protective strip integrally connected. The second arc-shaped cutting edge is located on the second spiral protective strip near the second insertion end. Further, the projection of the second cutting guard on a cross-section perpendicular to the axial direction of the second needle bar is circular, and the second spiral protective strip is spiral-shaped. In a specific example, the projection of the second arc-shaped cutting edge on a cross-section perpendicular to the axial direction of the second needle bar is arc-shaped. In this structure, the second oblique cutting edge and the second arc-shaped cutting edge can respectively cut the bone sample to be extracted, and the cut bone sample enters the groove of the second spiral cutting assembly.

[0062] The side of the second threaded segment near the second insertion end is designated as the second proximal side, and the side of the second threaded segment near the second rotating end is designated as the second distal side. The side of the second spiral protective strip near the second insertion end is designated as the second insertion edge, and the side of the second spiral protective strip near the second rotating end is designated as the second rotating edge. In one embodiment, the second insertion edge is connected to the second distal side, and a second gap is formed between the second rotating edge and the second proximal side, allowing for easy removal of the bone sample from the groove of the second spiral cutting assembly. With this structure, the bone sample enters the groove of the second spiral cutting assembly; when removing the bone sample from the groove, a sharp object can be inserted into the second gap, and the bone sample can be pushed out of the groove along the direction from the second rotating end to the second insertion end. Further, along the insertion direction, the second insertion end is located at the front end of the second needle bar in the insertion direction. In a specific example, the second threaded segment is a single-threaded thread.

[0063] Furthermore, the second rod-shaped sampling needle also includes a second handle that cooperates with the second needle rod, and the second handle is connected to the second rotating end of the second needle rod. Preferably, the second handle is rod-shaped and perpendicular to the second needle rod.

[0064] In this structure, the second insertion end of the second needle rod is mainly used for inserting into the bone sample to be collected. This application employs a single-threaded second spiral cutting component structure design. A semi-enclosed bone sample storage space is formed between the second spiral protective band and the groove of the second spiral cutting component, preventing bone tissue from falling out of the groove and ultimately achieving the purpose of bringing the bone sample out. In this application, during bone cutting, the bone sample produced can enter the semi-enclosed space between the groove and the second spiral protective band. The second needle rod is thin enough, and the space for storing bone is large enough, thereby bringing out as much bone tissue as possible. The length of the second threaded section is typically required to be at least 10cm to allow sufficient storage space. For example, in some orthopedic sampling, the second threaded section can be inserted to about 15cm; however, in similar finger bone sampling, the second threaded section is generally set starting 0.5cm after the second insertion end of the second needle rod, as long as the second threaded section can advance for sampling. Simultaneously, the end of the second insertion end is a pointed nail with a second oblique cutting edge. In this structure, the second oblique cutting edge and the second arc-shaped cutting edge cut the bone sample, and the cut bone sample can enter the groove. Preferably, the outer diameter of the second needle bar is smaller than the inner diameter of the second sleeve.

[0065] The sampling procedure using the second rod-shaped sampling needle is as follows: Along the rotation direction of the second needle rod, the bone sample is cut through the second oblique cutting edge and the second arc-shaped cutting edge, respectively, and the cut bone sample enters the groove. After the second rod-shaped sampling needle has finished sampling, it is pulled out, and the bone sample in the groove on the second rod-shaped sampling needle is removed. In this structure, the second oblique cutting edge and the second arc-shaped cutting edge can simultaneously perform the cutting function, while the second spiral protective band can prevent the bone sample from falling out of the groove.

[0066] In this embodiment, the second sleeve is a straight tube. Furthermore, it also includes a second sleeve handle that cooperates with the second sleeve; the second sleeve handle is connected to the second sleeve and can drive the second sleeve to move synchronously. Preferably, as shown... Figure 6 As shown, the second cylinder handle is perpendicular to the second sleeve; during sampling, the second needle rod is fitted inside the second sleeve, and the second needle rod can move relative to the second sleeve.

[0067] In this structure, the second sleeve serves a directional function. The operation process is as follows: First, insert the second sleeve near the location where the bone sample is to be taken. Then, insert the second needle rod into the second sleeve and rotate the second needle rod through the second handle to achieve the sampling of the bone sample. After the sampling is completed, remove the second needle rod from the second sleeve and then take out the bone sample from the second threaded section.

[0068] Furthermore, based on the design of the second sleeve and the second rod-shaped sampling needle, the second sleeve can play a positioning role; when the amount of bone sample taken in one sampling is insufficient, after adjusting the sampling angle of the second sleeve, the second rod-shaped sampling needle can be inserted into the second sleeve again for secondary sampling until the sampling is completed.

[0069] In this application, the second rod-shaped sampling needle is made of stainless steel or other materials and has a sharp second insertion end, a second threaded section, a second oblique cutting edge, and a second arc-shaped cutting edge, used for puncturing bone tissue and taking bone samples. The second handle and the second barrel handle are made of metal or plastic, providing good feel and stability. Furthermore, this application features a good ergonomic design, allowing for the acquisition of sufficient bone sample volume in most cases with a single sampling.

[0070] The actual sampling procedure using the bone tissue biopsy sampling tool described in this application is as follows.

[0071] (1) Preparation stage Patient preparation: Communicate with the patient, explain the purpose, procedure and possible risks of the surgery, and ensure the patient's informed consent.

[0072] Anesthesia: The appropriate anesthesia method is selected based on the surgical site and the patient's condition. For bone sampling, local anesthesia is usually the first choice.

[0073] Location: Use image-guided techniques (such as X-ray, CT, or MRI) to determine the sampling site to ensure accuracy.

[0074] (2) Surgical preparation Aseptic technique: Ensure that the surgical area, instruments and operator's hands are clean and sterile.

[0075] Marking: Accurately mark the sampling points under image guidance.

[0076] (3) Perform sampling Puncture: The tip of a bone sampler is used to penetrate the skin and soft tissue to reach the predetermined bone tissue location, and is then positioned using a second sleeve.

[0077] Sampling: Rotate the second rod-shaped sampling needle to cut the bone tissue sample. Care must be taken to avoid excessive damage during the operation. If necessary, a second sampling operation can be performed.

[0078] Sample Removal: After removing the sample, remove the second sleeve.

[0079] (4) Ending stage Hemostasis: For bleeding points, use hemostatic materials or gently apply pressure to stop the bleeding.

[0080] Disinfection: Disinfect the surgical area to prevent infection.

[0081] Observation: Observe the patient's reaction to ensure the anesthesia effect and that there are no abnormalities in the surgical area.

[0082] (5) Follow-up processing Sample processing: The obtained bone tissue samples are processed according to laboratory requirements for subsequent pathological examination, microbial culture, etc.

[0083] Records: Record the surgical procedure, sample information, and patient responses to provide a basis for subsequent diagnosis and treatment.

[0084] In this application, the second needle shaft and the second sleeve are required to have good corrosion resistance: there must be no corrosion marks on the part of the needle body that is immersed; at the same time, they must meet the requirements for aseptic operation.

[0085] like Figure 3 As shown, in the aforementioned embodiment, the length of the second cutting protective member is the same as the length of the second threaded segment, meaning the second cutting protective member completely covers the second threaded segment. Here, the inventors provide the following variation: Figure 7-8 As shown, the length of the second cutting guard is less than the length of the second threaded segment; and along the direction from the second insertion end to the second rotation end, the second cutting guard is disposed on the second threaded segment, that is, the second cutting guard partially covers the second threaded segment. Further, it also includes a second ejector rod, which includes a second helical rod-shaped portion that mates with the second threaded segment. The second helical rod-shaped portion is disposed on the second threaded segment and can move axially along the second threaded segment. With this structure, in the initial state, the second helical rod-shaped portion is fitted onto the portion of the second threaded segment not covered by the second cutting guard; when removing the bone sample from the groove, pushing the second helical rod-shaped portion along the direction from the second rotation end to the second insertion end pushes the bone sample out of the groove; after the bone sample is ejected, the second helical rod-shaped portion returns to its initial position. Further, the second ejector rod also includes a second straight connecting portion, which is integrally connected to the second helical rod-shaped portion.

[0086] Furthermore, based on the foregoing, the inventors provide the following variation two: (e.g.) Figure 9-11As shown, the length of the second cutting guard is less than the length of the second threaded segment; and along the direction from the second insertion end to the second rotating end, the second cutting guard is disposed on the second threaded segment, that is, the second cutting guard partially covers the second threaded segment; simultaneously, the second rotating edge is connected to the second proximal side, and a second gap two is formed between the second insertion edge and the second distal side, through which the bone sample located in the groove of the second spiral cutting assembly can be easily removed. In the second variation, the second cutting guard partially covers the second threaded segment (which changes the size of the bone sample storage space, which can be set as needed), and the relative position of the gap is adjusted (that is, a second gap two is formed between the second insertion edge and the second distal side). Furthermore, it also includes a second push rod, the second push rod including a second spiral rod-shaped portion that cooperates with the second threaded segment. The second spiral rod-shaped portion is disposed on the second threaded segment, and the second spiral rod-shaped portion can move axially along the second threaded segment.

[0087] Example 2 This embodiment provides a bone tissue biopsy sampling tool, comprising a third rod-shaped sampling needle, a third sleeve cooperating with the third rod-shaped sampling needle, and a third ejector rod. The third rod-shaped sampling needle includes a third needle shaft, a third oblique cutting edge, a third threaded section, and a third cutting guard. The third needle shaft is disposed within the third sleeve and is movable relative to the third sleeve. The end of the third needle shaft that contacts the bone sample to be collected is designated as the third insertion end, and the other end of the third needle shaft is designated as the third rotating end. Along the direction from the third insertion end to the third rotating end, the third oblique cutting edge and the third threaded section are sequentially disposed on the outer wall of the third needle shaft, with the third oblique cutting edge extending to the tip of the third needle shaft. Figure 13 As shown, the inclination angle of the third oblique cutting edge relative to the third needle rod is the same as the helix angle of the third threaded section, and the third oblique cutting edge and the third threaded section are connected in sequence. With this structure, the third oblique cutting edge rotates synchronously under the drive of the third needle rod, and the bone sample to be taken is cut when the third oblique cutting edge rotates.

[0088] The third cutting guard includes a third arc-shaped cutting edge and a third spiral protective strip, with the third arc-shaped cutting edge and the third spiral protective strip integrated together. The third arc-shaped cutting edge is located on the third spiral protective strip near the third insertion end. Furthermore, the projection of the third cutting guard onto a cross-section perpendicular to the axial direction of the third needle shaft is circular, and the third spiral protective strip is spiral-shaped. In a specific example, the projection of the third arc-shaped cutting edge onto a cross-section perpendicular to the axial direction of the third needle shaft is arc-shaped. In this structure, the third oblique cutting edge and the third arc-shaped cutting edge can respectively cut the bone sample to be extracted.

[0089] The side of the third threaded segment closest to the third insertion end is designated as the third proximal side, and the side of the third threaded segment closest to the third rotating end is designated as the third distal side. Similarly, the side of the third spiral protective strip closest to the third insertion end is designated as the third insertion edge, and the side of the third spiral protective strip closest to the third rotating end is designated as the third rotating edge. For example... Figure 12 As shown, the third insertion edge is connected to the third distal side, the third rotating edge is connected to the third proximal side, and a third sample storage channel is formed between the groove of the third spiral protective band and the third threaded section. Bone samples cut by the third oblique cutting edge and the third arc-shaped cutting edge can enter the third sample storage channel for temporary storage. The third sample storage channel is a hollow spiral columnar structure. The third ejector rod includes a third spiral rod-shaped part that mates with the third sample storage channel, and this third spiral rod-shaped part can be inserted into the third sample storage channel to eject the bone samples within it. Furthermore, the third spiral rod-shaped part is spiral-shaped, and its working end adopts a pointed design to facilitate the ejection of bone samples from the third sample storage channel. Using this structure, bone samples enter the third sample storage channel; when removing bone samples from the third sample storage channel, the third spiral rod-shaped part can be inserted into the third sample storage channel along the direction from the third rotating end to the third insertion end. Because the third spiral rod-shaped part mates with the third threaded section, the third spiral rod-shaped part can eject bone samples from the third sample storage channel as it moves within it. Furthermore, along the insertion direction, the third insertion end is located at the front end of the third needle bar in the insertion direction. In a specific example, the third threaded segment is a single-threaded thread.

[0090] Furthermore, the third rod-shaped sampling needle also includes a third handle that cooperates with the third needle rod, and the third handle is connected to the third rotating end of the third needle rod. Preferably, the third handle is rod-shaped and perpendicular to the third needle rod.

[0091] Unlike Embodiment 1, which features two second slits, in this embodiment, the third insertion edge is connected to the third distal side, the third rotating edge is connected to the third proximal side, and a third sample storage channel is formed between the third spiral protective band and the groove of the third threaded section. This third sample storage channel is a structure that stores bone samples and is circumferentially closed along the third needle shaft. In this structure, the third oblique cutting edge and the third arc-shaped cutting edge respectively cut the bone samples, and the cut bone samples enter the third sample storage channel. Preferably, the outer diameter of the third needle shaft is smaller than the inner diameter of the third sleeve.

[0092] Due to the structural design of the third sample storage channel, this embodiment includes a third push rod, which comprises a third helical rod-shaped portion that cooperates with the third sample storage channel. Preferably, the third push rod also includes a third straight connecting portion for easy gripping by the user, and the third straight connecting portion is integrally connected to the third helical rod-shaped portion.

[0093] The sampling procedure using the third rod-shaped sampling needle is as follows: Along the rotation direction of the third needle rod, the bone sample is cut through the third oblique cutting edge and the third arc-shaped cutting edge, respectively, and the cut bone sample enters the third sample storage channel. After the third rod-shaped sampling needle has completed sampling, it is pulled out, and the bone sample is removed from the groove on the third rod-shaped sampling needle by the third push rod. In this structure, the third oblique cutting edge and the third arc-shaped cutting edge can simultaneously perform the cutting function, while the third spiral protective band can prevent the bone sample from falling out of the third sample storage channel.

[0094] In this embodiment, the third sleeve is in the shape of a straight tube. Furthermore, it also includes a third sleeve handle that cooperates with the third sleeve; the third sleeve handle is connected to the third sleeve and can drive the third sleeve to move synchronously. Preferably, the third sleeve handle is perpendicular to the third sleeve; during sampling, the third needle rod is fitted inside the third sleeve, and the third needle rod can move relative to the third sleeve.

[0095] like Figure 12 As shown in the aforementioned embodiment, the length of the third cutting guard is the same as the length of the third threaded segment, meaning the third cutting guard completely covers the third threaded segment. Here, the inventors provide the following variation three: the length of the third cutting guard is less than the length of the third threaded segment; and along the direction from the third insertion end to the third rotation end, the third cutting guard is disposed on the third threaded segment, meaning the third cutting guard partially covers the third threaded segment. Simultaneously, the third helical rod-shaped portion is disposed on the third threaded segment, and the third helical rod-shaped portion can move axially along the third threaded segment. Using this structure, in the initial state, the third helical rod-shaped portion is fitted onto the portion of the third threaded segment not covered by the third cutting guard; when retrieving the bone sample from the third sample storage channel, pushing the third helical rod-shaped portion along the direction from the third rotation end to the third insertion end pushes the bone sample out of the third sample storage channel; after the bone sample is pushed out, the third helical rod-shaped portion is returned to its initial position.

[0096] Everything else is the same as in Example 1.

[0097] Example 3 This embodiment provides a bone tissue biopsy sampling tool, comprising a first rod-shaped sampling needle and a first sleeve cooperating with the first rod-shaped sampling needle. The first rod-shaped sampling needle includes a first needle shaft, a first oblique cutting edge, and a first threaded section. The first needle shaft is disposed within the first sleeve and is movable relative to the first sleeve. The end of the first needle shaft that contacts the bone sample to be collected is designated as the first insertion end, and the other end of the first needle shaft is designated as the first rotating end. Along the direction from the first insertion end to the first rotating end, the first oblique cutting edge and the first threaded section are sequentially disposed on the outer wall of the first needle shaft, with the first oblique cutting edge extending to the tip of the first needle shaft. The inclination angle of the first oblique cutting edge relative to the first needle shaft is the same as the helix angle of the first threaded section. The first oblique cutting edge and the first threaded section are sequentially connected to form a first helical cutting assembly. Using this structure, under the drive of the first needle shaft, the first oblique cutting edge rotates synchronously, cutting the bone sample to be collected during rotation. Furthermore, along the insertion direction, the first insertion end is located at the front end of the first needle shaft in the insertion direction. In a specific example, the first thread segment is a single-start thread.

[0098] In this embodiment, the first sleeve is a straight tube. A first cutting element is provided at the end of the first sleeve that contacts the bone sample to be taken, and the first cutting element is capable of cutting the bone sample. Preferably, the first cutting element is an arc-shaped cutting edge, a circular cutting edge, or a ring saw.

[0099] Furthermore, the first rod-shaped sampling needle also includes a first handle that cooperates with the first needle rod, and the first handle is connected to the first rotating end of the first needle rod. Preferably, the first handle is rod-shaped and perpendicular to the first needle rod. Preferably, it also includes a first barrel handle that cooperates with the first sleeve, the first barrel handle being connected to the first sleeve (i.e., the first barrel handle is located at one end of the first sleeve, and the first cutting element is located at the other end of the first sleeve), and the first barrel handle can drive the first sleeve to move synchronously. Figure 18 As shown, the first cylinder handle is perpendicular to the first sleeve; during sampling, the first needle rod is fitted inside the first sleeve, and the first needle rod can move relative to the first sleeve.

[0100] The sampling operation, which uses a first rod-shaped sampling needle in conjunction with a first sleeve, is as follows: First, insert the first sleeve near the location where the bone sample is to be taken. Then, insert the first rod-shaped sampling needle into the first sleeve and rotate the first needle rod through the first handle to cut the bone sample. At the same time, the first cutting piece at the front end of the first sleeve cuts the bone sample, and the cut bone sample enters the groove of the first spiral cutting component. After sampling is completed, pull out the first sleeve and the first rod-shaped sampling needle simultaneously, and then take out the bone sample from the groove on the first rod-shaped sampling needle.

[0101] In this structure, the first oblique cutting edge and the first cutting element at the front end of the first sleeve respectively serve to cut the bone sample, and the inner wall of the first sleeve prevents the bone sample from falling into the groove. Specifically, the first oblique cutting edge and the first cutting element are used to cut the bone sample to be collected, and the cut bone sample enters the groove of the first spiral cutting assembly; through the interaction between the inner wall of the first sleeve and the first rod-shaped sampling needle, the bone sample in the groove is thus removed. When performing bone sample collection, care must be taken to avoid excessive damage; if necessary, a secondary sampling operation can be performed as needed.

[0102] The basic concepts have been described above. It is clear that the detailed disclosure above is merely illustrative and does not constitute a limitation of this specification. This invention extends to any new feature or combination thereof disclosed in this specification, as well as any new method or process step or combination thereof disclosed.

[0103] Furthermore, this specification uses specific terms to describe embodiments thereof. For example, "an embodiment," "one embodiment," and / or "some embodiments" refer to a particular feature, structure, or characteristic associated with at least one embodiment of this specification. Therefore, it should be emphasized and noted that "an embodiment," "one embodiment," or "an alternative embodiment" mentioned twice or more in different locations in this specification do not necessarily refer to the same embodiment.

[0104] It should be noted that, in order to simplify the description disclosed herein and thus aid in the understanding of one or more embodiments, the foregoing description of embodiments in this specification sometimes combines multiple features into a single embodiment, drawing, or description thereof. However, this method of disclosure does not imply that the subject matter of this specification requires more features than those mentioned in the claims. In fact, the embodiments contain fewer features than all the features of the single embodiments disclosed above. Certain features, structures, or characteristics in one or more embodiments of the present invention can be appropriately combined.

Claims

1. A bone tissue biopsy sampling tool, characterized in that, It includes a first rod-shaped sampling needle and a first sleeve that cooperates with the first rod-shaped sampling needle, wherein the first sleeve is in the shape of a straight tube; The first rod-shaped sampling needle includes a first needle rod, a first oblique cutting edge, and a first threaded section; The end of the first needle bar that contacts the bone sample to be taken is designated as the first insertion end, and the other end of the first needle bar is designated as the first rotating end. Along the direction from the first insertion end to the first rotating end, the first oblique cutting edge and the first threaded segment are sequentially arranged on the first needle bar. The first oblique cutting edge and the first threaded segment are sequentially connected to form the first spiral cutting assembly, and the first oblique cutting edge can cut the bone sample to be taken under the drive of the first needle bar. The first needle bar is disposed inside the first sleeve and the first needle bar can move relative to the first sleeve; The first sleeve has a first cutting element at the end that contacts the bone sample to be taken, and the first cutting element can cut the bone sample to be taken. It may include a second rod-shaped sampling needle and a second sleeve that cooperates with the second rod-shaped sampling needle, wherein the second sleeve is in the shape of a straight tube; The second rod-shaped sampling needle includes a second needle rod, a second oblique cutting edge, a second threaded section, and a second cutting guard; The end of the second needle rod that contacts the bone sample to be taken is designated as the second insertion end, and the other end of the second needle rod is designated as the second rotating end. Along the direction from the second insertion end to the second rotating end, the second oblique cutting edge and the second threaded segment are sequentially arranged on the second needle rod. The second oblique cutting edge and the second threaded segment are sequentially connected to form the second spiral cutting assembly, and the second oblique cutting edge can cut the bone sample to be taken under the drive of the second needle rod. The second cutting protective component includes a second arc-shaped cutting edge and a second spiral protective strip. The second arc-shaped cutting edge and the second spiral protective strip are connected as one unit. The second arc-shaped cutting edge is located on the second spiral protective strip at one end near the second insertion end, and the second arc-shaped cutting edge can cut the bone sample to be taken under the drive of the second needle rod. The side of the second threaded segment closest to the second insertion end is designated as the second proximal side, and the side of the second threaded segment closest to the second rotating end is designated as the second distal side; the side of the second spiral protective strip closest to the second insertion end is designated as the second insertion side, and the side of the second spiral protective strip closest to the second rotating end is designated as the second rotating side. The second insertion edge is connected to the second distal side, and a second gap is formed between the second rotating edge and the second proximal side, and the bone sample located in the groove of the second spiral cutting assembly can be easily removed through the second gap. Alternatively, the second rotating edge is connected to the second proximal side, and a second gap is formed between the second insertion edge and the second distal side, and the bone sample located in the groove of the second spiral cutting assembly can be easily removed through the second gap. The second needle bar is disposed inside the second sleeve and is movable relative to the second sleeve; It may include a third rod-shaped sampling needle, a third sleeve that cooperates with the third rod-shaped sampling needle, and a third push rod, wherein the third sleeve is in the shape of a straight tube; The third rod-shaped sampling needle includes a third needle rod, a third oblique cutting edge, a third threaded section, and a third cutting protection component; The end of the third needle rod that contacts the bone sample to be taken is designated as the third insertion end, and the other end of the third needle rod is designated as the third rotating end. Along the direction from the third insertion end to the third rotating end, the third oblique cutting edge and the third threaded section are sequentially arranged on the third needle rod. The third oblique cutting edge and the third threaded section are sequentially connected, and the third oblique cutting edge can cut the bone sample to be taken under the drive of the third needle rod. The third cutting protective component includes a third arc-shaped cutting edge and a third spiral protective strip. The third arc-shaped cutting edge and the third spiral protective strip are connected as one unit. The third arc-shaped cutting edge is located on the third spiral protective strip at one end near the third insertion end, and the third arc-shaped cutting edge can cut the bone sample to be taken under the drive of the third needle rod. The side of the third threaded section closest to the third insertion end is designated as the third proximal side, and the side of the third threaded section closest to the third rotating end is designated as the third distal side; the side of the third spiral protective strip closest to the third insertion end is designated as the third insertion side, and the side of the third spiral protective strip closest to the third rotating end is designated as the third rotating side. The third insertion edge is connected to the third distal side, the third rotating edge is connected to the third proximal side, and the groove between the third spiral protective band and the third threaded section forms a third sample storage channel. Bone samples cut by the third oblique cutting edge and the third arc-shaped cutting edge can enter the third sample storage channel for temporary storage. The third sample storage channel is a hollow spiral columnar structure. The third ejector rod includes a third spiral rod-shaped part that cooperates with the third sample storage channel, and the third spiral rod-shaped part can be inserted into the third sample storage channel and eject the bone samples in the third sample storage channel. The third needle bar is disposed inside the third sleeve and can move relative to the third sleeve.

2. The bone tissue biopsy sampling tool according to claim 1, characterized in that, The inclination angle of the first oblique cutting edge relative to the first needle bar is the same as the helix angle of the first threaded segment; Or the inclination angle of the second oblique cutting edge relative to the second needle bar is the same as the helix angle of the second threaded segment; Alternatively, the inclination angle of the third oblique cutting edge relative to the third needle bar may be the same as the helix angle of the third threaded segment.

3. The bone tissue biopsy sampling tool according to any one of claims 1 to 2, characterized in that, The second cutting protection component completely covers the second threaded section, or the second cutting protection component partially covers the second threaded section; The third cutting protective component may completely cover the third threaded section, or the third cutting protective component may partially cover the third threaded section.

4. The bone tissue biopsy sampling tool according to claim 3, characterized in that, The second cutting guard part covers the second threaded section; it also includes a second push rod, the second push rod including a second helical rod-shaped part that cooperates with the second threaded section, the second helical rod-shaped part being disposed on the second threaded section and being movable along the axial direction of the second threaded section; Alternatively, the third cutting protective component may partially cover the third threaded section; the third helical rod-shaped portion may be disposed on the third threaded section and may be movable axially along the third threaded section.

5. The bone tissue biopsy sampling tool according to claim 4, characterized in that, The second push rod also includes a second linear connecting part, which is integrated with the second helical rod-shaped part.

6. The bone tissue biopsy sampling tool according to any one of claims 1 to 5, characterized in that, The first rod-shaped sampling needle further includes a first handle that cooperates with the first needle rod, and the first handle is connected to the first rotating end of the first needle rod; Alternatively, the second rod-shaped sampling needle may also include a second handle that cooperates with the second needle rod, the second handle being connected to the second rotating end of the second needle rod; Alternatively, the third rod-shaped sampling needle may also include a third handle that cooperates with the third needle rod, the third handle being connected to the third rotating end of the third needle rod.

7. The bone tissue biopsy sampling tool according to claim 1, characterized in that, The first cutting element is an arc-shaped cutting edge, a circular cutting edge, or a ring saw.

8. The bone tissue biopsy sampling tool according to any one of claims 1 to 7, characterized in that, The projection of the second cutting guard on a cross-section perpendicular to the axis of the second needle bar is circular; Alternatively, the projection of the third cutting protective component onto a cross-section perpendicular to the axial direction of the third needle bar may be circular.

9. The bone tissue biopsy sampling tool according to any one of claims 1 to 8, characterized in that, It also includes a first barrel handle that cooperates with the first sleeve, the first barrel handle being connected to the first sleeve and capable of driving the first sleeve to move synchronously; It may also include a second barrel handle that cooperates with the second sleeve, the second barrel handle being connected to the second sleeve and capable of driving the second sleeve to move synchronously; It may also include a third sleeve handle that cooperates with the third sleeve, the third sleeve handle being connected to the third sleeve and capable of driving the third sleeve to move synchronously.

10. The bone tissue biopsy sampling tool according to claim 1, characterized in that, The third push rod also includes a third linear connecting part, which is connected to the third helical rod-shaped part as a whole.

Images