Bone marrow aspiration biopsy needle
By designing an adjustable bone marrow puncture biopsy needle, adjustability of the needle length is achieved using an adjustment screw and a length ruler, and fixing the needle core and the body by locking the top wire, the problem of relative rotation between the needle core and the body and lack of length marking in the prior art is solved, improving the accuracy and safety of the puncture.
Patent Information
- Application Number
- CN202421806204.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-29
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-07-29
AI Technical Summary
During the puncture process, the existing bone marrow aspiration biopsy needles change the position of the needle core tip, which affects the puncture effect. The lack of needle length marking makes it difficult to grasp the depth of the needle, which can easily lead to the puncture too shallow or too deep.
A bone marrow puncture biopsy needle including a puncture needle body and a needle length adjustment nut sleeve is designed to achieve adjustability of the needle length by adjusting screw and length ruler, and to avoid relative rotation between the needle core and the body by locking the top wire with the nut and the needle core.
Through the length ruler, intuitively view the elongation of the puncture needle, ensure that the puncture process is in place at one time, reduce patient pain, and fix the needle core and the main body by locking the top wire, avoiding the relative rotation between the needle core and the main body during the puncture, and improving the accuracy and safety of the puncture.
Smart Images
Figure CN223009170U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field related to puncture biopsy needles, and particularly relates to a bone marrow puncture biopsy needle. Background Art
[0002] A bone marrow puncture biopsy needle refers to a tool used for bone marrow puncture to extract bone marrow fluid. In the existing bone marrow puncture needle, the needle core and the main body are fixed by threaded connection. During the puncture process, since the main body needs to be rotated, relative rotation may occur between the needle core and the main body, resulting in a change in the protruding length of the pointed end of the needle core, which affects the puncture process. The sleeve is not provided with a needle length mark, making it difficult to master the depth of needle insertion. If the puncture is too shallow, it is easily blocked by the bone cortex; if the puncture is too deep, it is easy to penetrate the bone marrow and damage internal organs, resulting in puncture failure and the need for repeated puncture, thus bringing pain to the patient.
[0003] In view of this, the present utility model is specifically proposed. Summary of the Utility Model
[0004] The technical problem to be solved by the present utility model is to overcome the deficiencies of the prior art and provide a bone marrow puncture biopsy needle. To solve the above technical problems, the basic concept of the technical solution adopted by the present utility model is as follows:
[0005] A bone marrow puncture biopsy needle includes a puncture needle main body and a needle length adjusting nut sleeve. One end of the puncture needle main body is connected with an adjusting screw rod. The outer side of the adjusting screw rod is sleeved with a needle length adjusting nut sleeve. A locking plane is milled on the outer diameter of the needle length adjusting nut sleeve, and a nut locking set screw is installed on the locking plane. A length scale is arranged on the outer side of the adjusting screw rod. One end of the adjusting screw rod away from the needle length adjusting nut sleeve is connected with a puncture needle tail end. A needle core connecting stud is arranged at the end position of the puncture needle tail end, and a needle core fixing end cap is sleeved on the outer side of the needle core connecting stud. A needle core locking set screw is installed on the outer wall of the needle core fixing end cap.
[0006] As a further scheme of the present utility model: On the other side corresponding to the length scale of the adjusting screw rod, an adjusting chute is opened. A connecting rod is fixedly connected to the inner side of the needle length adjusting nut sleeve, and the connecting rod is fixedly connected to the end position of the main puncture needle. When the needle length adjusting nut sleeve moves along the adjusting screw rod, the connecting rod drives the main puncture needle to perform telescopic movement, realizing the adjustment of the elongation amount of the main puncture needle.
[0007] As a still further scheme of the present utility model: A fixed limiting end is arranged at one end of the puncture needle main body away from the adjusting screw rod for fixing the puncture needle main body during the puncture process. Anti-slip rolling patterns are roll-pressed on the outer diameter of the needle length adjusting nut sleeve to increase the friction during the tightening process and avoid slipping.
[0008] As a further solution of the present utility model: a locking top plate is arranged on the outer side of the core connecting stud at the tail end of the puncture needle. A puncture needle core is fixedly arranged at the center position of the core fixing end cap. A cap mating fixing hole is arranged on the inner side of the core fixing end cap. A top plate mating counterbore is arranged at the orifice position of the cap mating fixing hole, which is used to realize the cooperation between the core locking set screw and the locking top plate, so as to fix the position of the puncture needle core.
[0009] As a further solution of the present utility model: a set screw hole is machined on the outer side wall of the core fixing end cap. The core locking set screw is installed in the set screw hole. A pressing plate is arranged at the end position of the core locking set screw. A protective pad is adhesively fixed on the pressing plate. The protective pad is used to protect the pressing position during the pressing process, and at the same time improve the friction force to avoid slipping.
[0010] As a further solution of the present utility model: the main puncture needle is designed with a hollow structure. The diameter of the puncture needle core is smaller than the hollow diameter of the main puncture needle. The puncture needle core passes through the hollow structure of the main puncture needle. The needle tips of the main puncture needle and the puncture needle core are both of an inclined edge structure, and the edge is tough and sharp, which is easy to penetrate the bone.
[0011] After adopting the above technical solutions, the present utility model has the following beneficial effects compared with the prior art.
[0012] A length scale is arranged on the outer side of the adjusting screw of the puncture needle of the present utility model, and the elongation of the puncture needle can be directly viewed through the length scale, ensuring that the puncture process is in place at one time and reducing the pain brought to the patient during the puncture process.
[0013] A nut locking set screw is arranged on the outer side of the needle length adjusting nut sleeve of the present utility model, and a core locking set screw is arranged on the outer side of the core fixing end cap. The adjusting nut sleeve and the core fixing end cap are locked and fixed by the set screw to prevent relative rotation between the needle core and the main body during the puncture process, which affects the puncture process.
[0014] The following further describes in detail the specific embodiments of the present utility model with reference to the drawings. Description of the Drawings
[0015] The drawings, as a part of this application, are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model, but do not constitute an improper limitation to the present utility model. Obviously, the drawings described below are only some embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts. In the drawings:
[0016] Figure 1It is a schematic diagram of the structure of the utility model;
[0017] Figure 2 It is the main sectional view of the utility model;
[0018] Figure 3 It is a partial schematic diagram of the adjusting screw of the utility model;
[0019] Figure 4 It is a partial enlarged view of point A of the present utility model.
[0020] In the figure: 1-puncture needle body; 2-fixed limit end; 3-main puncture needle; 4-needle length adjustment nut sleeve; 5-anti-slip roller embossed pattern; 6-locking plane; 7-nut locking top screw; 8-adjusting screw; 9-length scale; 10-puncture needle tail; 11-needle core connecting stud; 12-locking top plate; 13-puncture needle core; 14-needle core fixed end cap; 15-needle core locking top screw; 16-end cap matching fixing hole; 17-top plate matching countersunk hole; 18-adjusting slide groove; 19-connecting rod; 20-top screw hole; 21-pressing plate; 22-protective pad.
[0021] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION
[0022] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.
[0023] like Figures 1 to 4 As shown, a bone marrow puncture biopsy needle comprises a puncture needle body 1 and a needle length adjusting nut sleeve 4, one end of the puncture needle body 1 is connected with an adjusting screw 8, the outer side of the adjusting screw 8 is sleeved with a needle length adjusting nut sleeve 4, a locking plane 6 is milled on the outer diameter of the needle length adjusting nut sleeve 4, a nut locking top screw 7 is installed on the locking plane 6, a length scale 9 is arranged on the outer side of the adjusting screw 8, the end of the adjusting screw 8 away from the needle length adjusting nut sleeve 4 is connected with a puncture needle tail end 10, a needle core connecting stud 11 is arranged at the end position of the puncture needle tail end 10, a needle core connecting stud 11 is sleeved with a needle core fixing end cap 14 on the outer side of the needle core fixing end cap 14, a needle core locking top screw 15 is installed on the outer wall of the needle core fixing end cap 14, the top screw is used to lock and fix the adjusting nut sleeve and the needle core fixing end cap 14 to avoid relative rotation between the needle core and the body during the puncture process, which affects the puncture process.
[0024] Wherein, on the other side corresponding to the length scale 9 of the adjusting screw rod 8, an adjusting sliding groove 18 is provided. A connecting rod 19 is fixedly connected to the inner side of the needle length adjusting nut sleeve 4. The connecting rod 19 is fixedly connected to the end position of the main puncture needle 3. When the needle length adjusting nut sleeve 4 moves along the adjusting screw rod 8, the connecting rod 19 drives the main puncture needle 3 to perform telescopic movement, realizing the adjustment of the elongation amount of the main puncture needle 3.
[0025] One end of the puncture needle body 1 away from the adjusting screw rod 8 is provided with a fixed limit end 2 for fixing the puncture needle body 1 during the puncture process. Anti-slip rolling patterns 5 are roll-processed on the outer diameter of the needle length adjusting nut sleeve 4 to increase the friction during the tightening process and avoid slipping.
[0026] On the outer side of the needle core connecting stud 11 on the puncture needle tail end 10, a locking top plate 12 is provided. A puncture needle core 13 is fixedly arranged at the central position of the needle core fixing end cap 14. An end cap mating fixing hole 16 is arranged inside the needle core fixing end cap 14. A top plate mating counterbore 17 is arranged at the orifice position of the end cap mating fixing hole 16 for realizing the cooperation between the needle core locking screw 15 and the locking top plate 12 to fix the position of the puncture needle core 13.
[0027] A top screw hole 20 is processed on the outer side wall of the needle core fixing end cap 14. The needle core locking screw 15 is installed in the top screw hole 20. A pressing plate 21 is arranged at the end position of the needle core locking screw 15. A protective pad 22 is adhesively fixed on the pressing plate 21. The protective pad 22 is used to protect the pressing position during the pressing process and at the same time increase the friction to avoid slipping.
[0028] The main puncture needle 3 is designed with a hollow structure. The diameter of the puncture needle core 13 is smaller than the hollow diameter of the main puncture needle 3. The puncture needle core 13 passes through the hollow structure of the main puncture needle 3. The needle tips of the main puncture needle 3 and the puncture needle core 13 are both of an inclined edge structure, and the edge is tough and sharp, which is easy to penetrate the bone.
[0029] The working principle of the present utility model is as follows: When performing bone marrow puncture, rotate the needle length adjusting nut sleeve 4. During the movement of the needle length adjusting nut sleeve 4 along the adjusting screw rod 8, the main puncture needle 3 is driven to move accordingly through the connecting rod 19, so that the main puncture needle 3 extends a certain length. The elongation amount can be viewed through the length scale 9. Then rotate the nut locking set screw 7 so that the end of the nut locking set screw 7 contacts the plane of the length scale 9 to lock and fix the position of the needle length adjusting nut sleeve 4. After that, insert the puncture needle core 13 into the main puncture needle 3, adjust the elongation amount of the puncture needle core 13 so that the tip of the puncture needle core 13 is consistent with the tip of the main puncture needle 3 or slightly longer than the tip of the main puncture needle 3, and use the core locking set screw 15 to lock and fix the position of the puncture needle core 13 to complete the adjustment of the bone marrow puncture biopsy needle. During use, hold the needle with the right hand, vertically insert the tip into the detection site, rotate the puncture needle body 1 around the long axis of the needle body left and right, and slowly insert it into the bone mass until the resistance of the puncture needle disappears and the main puncture needle 3 is fixed in the bone, indicating that the puncture is successful. Loosen the core locking set screw 15, rotate the core fixing end cap 14, pull out the puncture needle core 13, and place it in the hardware tray. Connect a dry 10 ml syringe to the core connecting stud 11, use the syringe to aspirate 0.1 - 0.2 ml of bone marrow fluid, inject the aspirated bone marrow fluid into a special storage container, or directly drop it on a glass slide to make two bone marrow fluid smear slides. Reinsert the puncture needle core 13 into the cavity of the main puncture needle 3. Take a sterile gauze with the left hand and place it at the needle hole. Withdraw the puncture needle together with the core with the right hand, immediately cover the needle hole with the sterile gauze, press the puncture point, and fix it with adhesive tape to complete the bone marrow puncture biopsy sampling operation. A length scale 9 is provided outside the adjusting screw rod 8 of the puncture needle, and the elongation amount of the puncture needle can be visually viewed through the length scale 9 to ensure that the puncture process is in place at one time, reducing the pain brought to the patient during the puncture process. The adjusting nut sleeve and the core fixing end cap 14 are locked and fixed by set screws to prevent relative rotation between the core and the main body during the puncture process, which may affect the puncture process.
[0030] The above are only the preferred embodiments of the present utility model, and do not impose any form of limitation on the present utility model. Although the present utility model has been disclosed above with the preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art of this patent, without departing from the scope of the technical solution of the present utility model, may make some changes or modifications using the above-mentioned disclosed technical content to form equivalent embodiments of equivalent changes. However, as long as it does not depart from the content of the technical solution of the present utility model, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.
Claims
1. A bone marrow puncture biopsy needle, comprising a puncture needle body (1) and a needle length adjustment nut sleeve (4), characterized in that: One end of the puncture needle body (1) is connected to an adjusting screw (8), the outer side of the adjusting screw (8) is provided with a needle length adjusting nut sleeve (4), the outer diameter of the needle length adjusting nut sleeve (4) is milled with a locking plane (6), the locking plane (6) is installed with a nut locking top screw (7), a length scale (9) is arranged on the outer side of the adjusting screw (8), the end of the adjusting screw (8) away from the needle length adjusting nut sleeve (4) is connected to the puncture needle tail end (10), the end position of the puncture needle tail end (10) is provided with a needle core connecting stud (11), the outer side of the needle core connecting stud (11) is provided with a needle core fixing end cap (14), and the outer side wall of the needle core fixing end cap (14) is installed with a needle core locking top screw (15).
2. A bone marrow puncture biopsy needle according to claim 1, characterized in that: An adjustment slot (18) is provided on the other side of the adjustment screw (8) corresponding to the length scale (9), and a connecting rod (19) is fixedly connected to the inner side of the needle length adjustment nut sleeve (4), and the connecting rod (19) is fixedly connected to the end position of the main puncture needle (3).
3. A bone marrow puncture biopsy needle according to claim 1, characterized in that: A fixed limit end (2) is provided at one end of the puncture needle body (1) away from the adjusting screw (8), and an anti-slip rolling pattern (5) is roll-processed on the outer diameter of the needle length adjusting nut sleeve (4).
4. A bone marrow puncture biopsy needle according to claim 2, characterized in that: A locking top plate (12) is arranged on the outer side of the needle core connecting stud (11) on the tail end (10) of the puncture needle, a puncture needle core (13) is fixedly arranged at the center position of the needle core fixing end cap (14), an end cap matching fixing hole (16) is arranged on the inner side of the needle core fixing end cap (14), and a top plate matching countersunk hole (17) is arranged at the orifice position of the end cap matching fixing hole (16).
5. A bone marrow puncture biopsy needle according to claim 4, characterized in that: A top screw hole (20) is formed on the outer wall of the needle core fixing end cap (14), the needle core locking top screw (15) is installed in the top screw hole (20), a clamping plate (21) is provided at the end of the needle core locking top screw (15), and a protective pad (22) is bonded and fixed to the clamping plate (21).
6. A bone marrow puncture biopsy needle according to claim 4, characterized in that: The main puncture needle (3) is designed as a hollow structure, the diameter of the puncture needle core (13) is smaller than the hollow diameter of the main puncture needle (3), the puncture needle core (13) passes through the hollow structure of the main puncture needle (3), and the needle tips of the main puncture needle (3) and the puncture needle core (13) are both bevel blade structures.