Bone needle biopsy needle

Abstract

The utility model discloses a bone needle biopsy needle, which relates to the technical field of bone needle biopsy and comprises a handle and a groove arranged at the top of the handle, a sleeve penetrating through the handle is arranged at the bottom of the handle, a needle core and a sampling needle matched with the sleeve are inserted in the sleeve, and an inclined cutting edge is arranged at the bottom of the sleeve. Sampling lines are arranged on the inner wall of the sampling needle, the bottom of the needle core extends to the outer side of the sleeve, a polishing surface is arranged at the tail end of the needle core, the bottom of the needle core is an elliptical sphere, the whole sphere is made of metal with the hardness larger than that of a skeleton, and the polishing surface is arranged on the surface of the sphere. The grinding surface at the bottom of the needle core is ensured to have enough contact area with the bone, the grinding surface at the edge can be ensured to be in contact with the inner wall of a through hole when the needle core extending out of the sleeve is in contact with the through hole in the surface of the bone, and if the needle core cannot penetrate through the through hole, the through hole can be ground through the grinding surface at the tail end by rotating the needle core, so that the shape of the through hole is changed.

Description

Technical Field

[0001] This utility model relates to the field of bone biopsy technology, and in particular to a bone biopsy needle. Background Technology

[0002] Bone biopsy is a medical examination method used to obtain cell and tissue samples from inside the bone for pathological examination under a microscope, in order to diagnose or rule out various bone lesions such as tumors, infections, and metabolic diseases.

[0003] The "Bone Marrow Aspiration Biopsy Needle" disclosed in Chinese Invention Patent / Utility Model Patent (Application No.: CN202120252996.0) typically involves using a dedicated puncture biopsy needle to penetrate the bone before inserting the biopsy needle. However, the shape of the perforation caused by the puncture needle after bone penetration may not be compatible with the biopsy needle, and forcibly inserting the biopsy needle may damage it. Therefore, adjustments may be made, such as adjusting the puncture position, enlarging the perforation, or using a smaller biopsy needle. The first two methods will cause secondary damage to the perforation site, and the operation is more difficult due to the instability of the perforated bone. Using a smaller biopsy needle may result in insufficient biopsy sampling.

[0004] Furthermore, due to the characteristics of biopsy tissue, the biopsy needle has a certain degree of elasticity when taking samples, and most existing operating methods cut it off by twisting. This stage of operation requires a certain amount of experience and operational accumulation, which is quite difficult for operators. Utility Model Content

[0005] To overcome the shortcomings of existing technologies, the purpose of this utility model is to solve the problem that the perforation produced after the puncture needle penetrates the bone is incompatible with the biopsy needle used, thus affecting the normal use of the biopsy needle.

[0006] To solve the problems of the prior art, the technical solution of this utility model is as follows: A bone puncture biopsy needle includes a handle and a groove on the top of the handle. A sleeve is provided at the bottom of the handle and penetrates the handle. A needle core is inserted inside the sleeve and a sampling needle adapted to the sleeve. The bottom of the sleeve is provided with an inclined cutting edge in a cross shape. The bottom of the needle core extends to the outside of the sleeve and has a polished surface at the end. The inner wall of the sampling needle is provided with sampling texture.

[0007] Furthermore, both the needle core and the sampling needle include a handheld end and a needle body end, wherein the needle body end extends through the handle into the inside of the sleeve, and the handheld end is adapted to the groove to ensure that the needle body part of the needle core and the sampling needle can be sufficiently fixed.

[0008] Furthermore, the handheld end of the sampling needle is provided with friction texture, allowing the operator to perform the operation more precisely.

[0009] Furthermore, the bottom of the needle core has an elliptical sphere, and the entire sphere is made of a metal with a hardness greater than that of bone. The polishing surface is set on the surface of the sphere to ensure that the polishing surface at the bottom of the needle core has sufficient contact area with the bone.

[0010] Furthermore, the sampling needle is a hollow tubular structure, and the sampling grooves on its inner wall cover the entire inner wall of the sampling needle, ensuring that all tissues entering the sampling needle will come into contact with the sampling grooves.

[0011] Furthermore, the sampling pattern consists of a spiral pattern composed of several raised areas, and the bottom of the sampling pattern is flush with the bottom of the sampling needle, increasing the contact area between the sampling pattern and the biopsy tissue inside the sampling needle.

[0012] Furthermore, the cannula passes through the handle and communicates with the groove, and a universal syringe connection structure is provided at the communication position between the groove and the cannula.

[0013] Compared with the prior art, the advantages of this utility model are as follows:

[0014] 1. The bottom of the needle core extends to the outside of the sleeve and has a polishing surface at the end. The bottom of the needle core is an elliptical sphere, and the entire sphere is made of metal with a hardness greater than that of bone. The polishing surface is set on the surface of the sphere to ensure that the polishing surface at the bottom of the needle core has sufficient contact area with the bone. When the needle core protruding along the sleeve contacts the perforation on the surface of the bone, it can ensure that the polishing surface at the edge contacts the inner wall of the perforation. If the needle core cannot pass through the perforation, the perforation can be polished by rotating the needle core through the polishing surface at the end, so that the shape of the perforation changes.

[0015] 2. The inner wall of the sampling needle is provided with sampling grooves. The sampling grooves are a spiral groove group composed of several protrusions, and the bottom of the sampling grooves is flush with the bottom of the sampling needle, which increases the contact area between the sampling grooves and the biopsy tissue inside the sampling needle. When the tissue enters the sampling needle, it will twist along the sampling grooves. When the operator twists the sampling needle in the opposite direction, the biopsy tissue can be cut off more effectively. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the needle core assembly state of this utility model.

[0018] Figure 3 This is a schematic diagram of the sampling needle assembly state of this utility model.

[0019] Figure 4This is an enlarged schematic diagram of the sampling needle end structure of this utility model.

[0020] Figure 5 This is a schematic diagram of the polished surface of this utility model.

[0021] Figure 6 This is a cross-sectional view of the needle core assembly state of this utility model.

[0022] Reference numerals: 1. Handle; 2. Groove; 3. Sleeve; 4. Needle core; 5. Sampling needle; 6. Inclined cutting edge; 7. Polished surface; 8. Sampling texture. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Example 1, as Figure 1 , 2 As shown in Figure 5, a bone biopsy needle includes a handle 1 and a groove 2 formed on the top of the handle 1. A sleeve 3 is provided at the bottom of the handle 1, which passes through the handle 1 and communicates with the groove 2. A syringe universal connection structure is provided at the communication position between the groove 2 and the sleeve 3, and a needle core 4 is inserted inside the sleeve 3.

[0025] The needle core 4 includes a handheld end and a needle body end. The needle body end extends through the handle 1 into the sleeve 3, while the handheld end is adapted to the groove 2 to ensure that the needle body part of the needle core 4 can be sufficiently fixed. The bottom of the sleeve 3 has a cross-shaped inclined cutting edge 6. The bottom of the needle core 4 extends to the outside of the sleeve 3 and has a polishing surface 7 at the end. The bottom of the needle core 4 is an elliptical sphere, and the entire sphere is made of metal with a hardness greater than that of bone. The polishing surface 7 is set on the surface of the sphere to ensure that the polishing surface 7 at the bottom of the needle core 4 has sufficient contact area with the bone.

[0026] Working principle description: First, the operator uses a puncture needle to make a hole in the bone at the required location. Then, the cannula 3 is inserted along the muscle tissue. The operator then inserts the needle core 4 along the cannula 3. If the needle core 4 cannot pass through the hole into the bone, the operator can fix the cannula 3 at the hole position by holding the handle 1. Then, the operator rotates the hand-held end of the needle core 4 so that the polished surface 7 at the end of the needle core 4 rotates in an abutting manner at the hole position until the needle core 4 can pass through the hole into the bone. Ensure that the size of the hole on the bone surface is suitable for the subsequent sampling operation, and then remove the needle core 4.

[0027] Example 2, as Figure 1 , 3As shown in Figures 4 and 6, a bone biopsy needle includes a handle 1 and a groove 2 formed on the top of the handle 1. A cannula 3 is provided at the bottom of the handle 1, penetrating the handle 1, and a sampling needle 5 is adapted to the cannula 3. The cannula 3 passes through the handle 1 and communicates with the groove 2. A universal syringe connection structure is provided at the communication position between the groove 2 and the cannula 3. The sampling needle 5 includes a hand-held end and a needle body end. The needle body end extends through the handle 1 into the inside of the cannula 3, while the hand-held end is adapted to the groove 2 to ensure that the needle body of the sampling needle 5 can be sufficiently fixed. The surface of the hand-held end of the sampling needle 5 is provided with friction texture, which allows the operator to operate more accurately. The bottom of the cannula 3 is provided with an inclined cutting edge 6 in a cross shape.

[0028] The inner wall of the sampling needle 5 is provided with sampling grooves 8. The sampling needle 5 is a hollow tubular structure. The sampling grooves 8 on its inner wall cover the entire inner wall of the sampling needle 5, ensuring that all tissues entering the sampling needle 5 will come into contact with the sampling grooves 8. The sampling grooves 8 are a spiral groove group composed of several protrusions, and the bottom of the sampling grooves 8 is flush with the bottom of the sampling needle 5, increasing the contact area between the sampling grooves 8 and the biopsy tissue inside the sampling needle 5.

[0029] Working principle description: After the operation steps of Example 1, the operator connects the syringe to the groove 2 and uses the syringe to generate negative pressure in the cannula 3, allowing the intraosseous tissue to enter the cannula 3. When the tissue enters the cannula 3, the inclined cutting edge 6 at the bottom of the cannula 3 contacts the tissue and cuts the adhesion between the tissues, making the tissue entering the cannula 3 strip-shaped. Then, the syringe is disassembled and the sampling needle 5 is inserted along the cannula 3. During the downward movement of the sampling needle 5, the tissue is collected and twisted in the inclined direction of the sampling groove 8. When the sampling needle 5 is fully inserted, the operator twists it to the side opposite to the inclined direction of the sampling groove 8. At this time, the sample inside the sampling needle 5 is already twisted under the action of the sampling groove 8, but under the restriction and drive of the sampling groove 8, twisting in the opposite direction makes it easier to cut off the sample, avoiding the situation where the sample inside the sampling needle 5 cannot be separated from the intraosseous tissue and thus cannot be taken out.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A bone biopsy needle, comprising a handle (1) and a groove (2) formed on the top of the handle (1), a cannula (3) extending through the handle (1) is provided at the bottom of the handle (1), and a needle core (4) is inserted inside the cannula (3), and a sampling needle (5) adapted to the cannula (3), characterized in that: The bottom of the sleeve (3) is provided with an inclined cutting edge (6) in a cross shape. The bottom of the needle core (4) extends to the outside of the sleeve (3) and the end is provided with a polished surface (7). The inner wall of the sampling needle (5) is provided with sampling texture (8).

2. The bone biopsy needle according to claim 1, characterized in that: Both the needle core (4) and the sampling needle (5) include a hand-held end and a needle body end, wherein the needle body end extends through the handle (1) into the sleeve (3), and the hand-held end is adapted to the groove (2).

3. The bone biopsy needle according to claim 2, characterized in that: The surface of the handheld end of the sampling needle (5) is provided with friction texture.

4. The bone biopsy needle according to claim 1, characterized in that: The needle core (4) has an elliptical sphere at its bottom, and the entire sphere is made of metal with a hardness greater than that of bone. The polishing surface (7) is set on the surface of the sphere.

5. The bone biopsy needle according to claim 1, characterized in that: The sampling needle (5) is a hollow tubular structure, and the sampling texture (8) on its inner wall covers the entire inner wall of the sampling needle (5).

6. The bone biopsy needle according to claim 1, characterized in that: The sampling pattern (8) is a spiral pattern group composed of several protrusions, and the bottom of the sampling pattern (8) is flush with the bottom of the sampling needle (5).

7. The bone biopsy needle according to claim 1, characterized in that: The cannula (3) passes through the handle (1) and communicates with the groove (2), and a universal syringe connection structure is provided at the communication position between the groove (2) and the cannula (3).

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