A spongy bone marrow decompression pressure measuring puncture needle

Abstract

The utility model discloses a cancellous bone marrow pressure reduction pressure measurement puncture needle, including bone puncture needle pipe, one end forms the sharp part, the other end forms handle screw thread, the sharp part head end forms and has the avoidance arc, the avoidance arc is used for avoiding puncturing blood vessel when puncturing soft tissue, the sharp part peripheral surface forms and has the bone puncture thread of easily penetrating the bone, through setting the sharp part of bone puncture needle pipe into the avoidance arc, when bone puncture needle pipe passes through soft tissue, blood vessel directly slides to both ends under the shape of avoidance arc, avoids puncturing blood vessel in the puncture process, in addition, sets up the bone puncture thread on the sharp part, utilizes the bone puncture thread to realize the quick penetration of bone when bone puncture needle pipe passes through the bone surface, can avoid the sliding of bone puncture needle pipe in the process of penetrating the bone simultaneously, reduces the puncture time, reduces the pain of patient.

Description

Technical Field

[0001] This utility model belongs to the field of puncture needle technology, specifically relating to a cancellous bone marrow decompression and pressure measurement puncture needle. Background Technology

[0002] Puncture needles are used in orthopedic surgery to extract samples or measure pressure within the bone marrow cavity. Existing puncture needles have the following problems:

[0003] I. Traumatic issues: Existing bone aspiration needles have blunt tips, causing pain and discomfort during puncture. This pain may cause patients to move their bodies involuntarily during the puncture, increasing the risk of puncture.

[0004] II. Local Tissue Damage: Existing bone aspiration needles are designed to cause significant damage to the soft and bone tissue at the puncture site. Due to the excessively sharp tip of the needle, there is a risk of puncturing blood vessels during the procedure, potentially leading to local bleeding and hematoma. Damage to surrounding blood vessels may result in severe bleeding.

[0005] III. Infection Risks and Sample Quality Issues: Most bone marrow aspiration needles used in hospitals are reused. Even under strict aseptic conditions, there is still a certain risk of infection. Infection can cause local inflammation at the puncture site, manifesting as redness, swelling, fever, and increased pain. If the infection spreads, it can lead to serious complications such as osteomyelitis. Osteomyelitis is relatively complex to treat, requiring long-term antibiotics and potentially surgery. Furthermore, bone marrow samples may be contaminated with blood or components from surrounding tissues. This can affect the accuracy of test results. For example, during bone marrow cell morphology examinations or genetic testing, sample contamination can lead to misdiagnosis or inaccurate results, impacting subsequent diagnostic and treatment plans. Utility Model Content

[0006] In order to solve the above-mentioned problems in the existing technology, the purpose of this utility model is to provide a cancellous bone marrow decompression and pressure measurement puncture needle.

[0007] The technical solution adopted in this utility model includes:

[0008] The bone aspiration needle has a spike at one end and a handle thread at the other end. The tip of the spike has an avoidance arc to avoid puncturing blood vessels when puncturing soft tissue. The periphery of the spike has a bone aspiration thread for easy bone penetration.

[0009] The bone aspiration needle core is fitted inside the bone aspiration needle tube;

[0010] The handle is connected to one end of the bone aspiration needle tube and has a through-hole structure inside.

[0011] As a preferred embodiment of this invention, the spiked portion is a beveled spiked structure.

[0012] As a preferred embodiment of this invention, the bone-penetrating threads are distributed along the length direction of the spike portion, and the bone-penetrating threads are used for the spiral bone-penetrating of the bone-penetrating needle tube.

[0013] As a preferred embodiment of this invention, the circumferential surface of the bone aspiration needle tube is provided with graduation markings.

[0014] As a preferred embodiment of this utility model, the scale markings are circular scale lines, and multiple scale markings are equidistantly arranged along the length direction of the bone aspiration needle tube.

[0015] As a preferred embodiment of the present invention, the handle includes a handle body, on which a connecting sleeve is fitted. The connecting sleeve has a hollow structure, and one end of the connecting sleeve has an internal thread that matches the thread of the handle.

[0016] As a preferred embodiment of this utility model, a handheld limiting plate is provided at one end of the handle body away from the connecting sleeve, and the handheld limiting plate is symmetrically and fixedly connected to the circumferential surface of the handle body.

[0017] As a preferred embodiment of this invention, the upper end of the handle is provided with a syringe interface, which is connected to the inside of the bone aspiration needle tube.

[0018] As a preferred embodiment of this invention, one end of the bone aspiration needle core is formed with a puncture portion, and the other end is fixedly provided with a limiting ring, wherein the end face diameter of the limiting ring is larger than the diameter of the syringe interface.

[0019] The beneficial effects of this utility model are as follows:

[0020] This invention relates to a cancellous bone marrow decompression and pressure measurement puncture needle. By designing the tip of the bone marrow aspiration needle into an avoidance arc shape, the blood vessels slide directly to both ends as the needle passes through soft tissue, avoiding puncture during the puncture process. In addition, bone penetration threads are provided on the tip, allowing the needle to quickly penetrate the bone surface while preventing slippage, thus reducing puncture time and patient pain. By making the bone marrow aspiration needle and handle detachable, the needle can be used only once, reducing the risk of surgical infection. Attached Figure Description

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and specific implementation methods.

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the handle of this utility model;

[0024] Figure 3 This is a schematic diagram of the handle of this utility model from another perspective;

[0025] Figure 4 This is a schematic diagram of the bone aspiration needle of this utility model;

[0026] Figure 5 This is a utility model Figure 4 Enlarged structural diagram at point A in the diagram;

[0027] Figure 6 This is a schematic diagram of the structure of the bone aspiration needle core of this utility model.

[0028] In the diagram: 1. Bone aspiration needle tube; 2. Bone aspiration needle core; 3. Handle; 11. Spike; 12. Avoidance arc; 13. Bone aspiration thread; 14. Handle thread; 15. Scale markings; 21. Puncture section; 22. Limiting ring; 31. Handle body; 32. Handheld limiting plate; 33. Connecting sleeve; 34. Internal thread; 35. Syringe interface. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model; that is, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The components of the embodiments of the present utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0031] The following is combined with Figure 1-5 This invention describes a specific embodiment of a cancellous bone marrow decompression and manometry puncture needle, comprising:

[0032] The bone aspiration needle 1 has a pointed tip 11 at one end and a handle thread 14 at the other end. The tip of the pointed tip 11 has a relief arc 12, which is used to avoid puncturing blood vessels when puncturing soft tissue. The peripheral surface of the pointed tip 11 has a bone aspiration thread 13 that facilitates bone penetration. The pointed tip 11 is used for puncturing soft tissue and bone surfaces with the bone aspiration needle 1. When puncturing soft tissue, the tip of the pointed tip 11 is too sharp and can easily puncture blood vessels, causing large-area bleeding. By setting the tip of the pointed tip 11 into a relief arc 12 with an arc structure, a needle tip-free design is achieved. When the pointed tip 11 contacts a blood vessel, the blood vessel slides away to both sides along the relief arc 12, making it less likely to puncture the blood vessel and effectively protecting it. At the same time, the relief arc 12 has a certain degree of sharpness, which can meet the sharpness required for bone aspiration.

[0033] Bone aspiration needle core 2 is fitted inside the bone aspiration needle tube 1. Bone aspiration needle core 2 is used to break the skin of soft tissue.

[0034] Handle 3 is connected to one end of the bone aspiration needle tube 1 and has a through structure inside. The handle 3 is connected to the bone aspiration needle tube 1 to apply bone-penetrating force to the bone aspiration needle tube 1. The handle 3 and the handle thread 14 at one end of the bone aspiration needle tube 1 are threaded together, which can realize the detachable installation between the bone aspiration needle tube 1 and the handle 3. After the insertion surgery is completed, a large number of bacteria are attached to the periphery of the bone aspiration needle tube 1. By disassembling the bone aspiration needle tube 1 and the handle 3, the handle 3 can be reused, and the contaminated bone aspiration needle tube 1 can be directly discarded to avoid the risk of infection in subsequent reuse of the surgery.

[0035] Please refer to Figure 1 , Figures 4-5 As shown, the spike 11 has a beveled spike structure, which gives the front end of the bone aspiration needle tube 1 a certain degree of sharpness, so that the bone aspiration needle core 2 can pass through the soft tissue and bone surface in sequence to reach the bone marrow cavity, so as to measure the pressure in the bone marrow cavity.

[0036] Please refer to Figures 4-5 As shown, the bone penetration thread 13 is distributed along the length direction of the spike portion 11. The bone penetration thread 13 is used for the spiral bone penetration of the bone penetration needle tube 1. By setting the bone penetration thread 13 on the spike portion 11, when the bone penetration needle tube 1 passes through the bone surface, by rotating the bone penetration needle tube 1, the bone penetration needle tube 1 can quickly penetrate the bone and reach the medullary cavity under the action of the bone penetration thread 13. At the same time, one end of the spike portion 11 can achieve stable positioning with the bone surface, avoiding slippage on the bone surface when puncturing the bone penetration needle tube 1.

[0037] Please refer to Figure 1 As shown, the circumference of the bone aspiration needle tube is provided with scale markings 15, which are used to assist in the precise control of the puncture depth.

[0038] Please refer to Figure 1 As shown, the scale marking 15 is a circular scale line, and multiple scale markings 15 are equidistantly arranged along the length direction of the bone aspiration needle tube 1. Each scale marking 15 corresponds to a different puncture depth to improve puncture accuracy and reduce surgical error.

[0039] Please refer to Figures 2-3 As shown, the handle 3 includes a handle body 31, on which a connecting sleeve 33 is fitted. The connecting sleeve 33 has a hollow structure, and one end of the connecting sleeve 33 has an internal thread 34 that is adapted to the handle thread 14. The handle sleeve is fixedly connected to the handle body 31. The internal thread 34 formed in the connecting sleeve 33 is used to engage with the handle thread 14. The detachable installation between the connecting sleeve 33 and the bone aspiration needle 1 is achieved through the thread engagement between the internal thread 34 and the handle thread 14. After the puncture surgery is completed, the bone aspiration needle 1 can be directly disassembled and discarded to avoid the risk of infection from repeated use.

[0040] Please refer to Figure 2 As shown, a hand-held limiting plate 32 is provided at one end of the handle body 31 away from the connecting sleeve 33. The hand-held limiting plate 32 is symmetrically fixedly connected to the circumferential surface of the handle body 31. The hand-held limiting plate 32 is used to facilitate the application of force when rotating the handle 3, so as to realize the rapid bone penetration of the bone aspiration needle 1 and reduce the patient's pain.

[0041] Please refer to Figure 2 As shown, the upper end of the handle 3 is provided with a syringe interface 35, which is connected to the inside of the bone marrow aspiration needle tube 1. The syringe interface 35 is used to connect a syringe to enable the extraction of bone marrow into the bone marrow cavity. At the same time, the syringe interface 35 can be used to measure the pressure inside the bone marrow cavity.

[0042] Please refer to Figures 1-2 As shown, one end of the bone aspiration needle core 2 has a puncture part 21, and the other end is fixedly provided with a limiting ring 22. The diameter of the end face of the limiting ring 22 is larger than the diameter of the syringe interface 35. The puncture part 21 is used for puncturing and breaking the skin of soft tissue, and the limiting ring 22 is used to restrict the bone aspiration needle core 2 from slipping down and prevent it from sliding down along the syringe interface 35.

[0043] Working principle of this utility model:

[0044] The internal thread 34 and the handle thread 14 on the bone aspiration needle tube 1 are threaded together to achieve the installation between the bone aspiration needle tube 1 and the handle device 3. The bone aspiration needle core 2 is inserted into the bone aspiration needle tube 1. When performing soft tissue puncture, the puncture part 21 of the bone aspiration needle core 2 is first extended out of the bone aspiration needle tube 1. After the bone aspiration needle core 2 punctures the soft tissue, the bone aspiration needle tube 1 is punctured along the puncture path until the tip 11 of the bone aspiration needle tube 1 contacts the bone surface. During this process, since the front end of the tip 11 is an avoidance arc 12, when the avoidance arc 12 contacts the blood vessel, the blood vessel moves to both sides along the avoidance arc 12, effectively avoiding puncturing the blood vessel.

[0045] First, use the puncture part 21 to puncture the small hole on the bone surface, and then use the tip 11 to puncture the bone along the small hole punctured by the puncture part 21. Since the tip 11 has bone penetration threads 13, the handle 3 and the bone penetration needle tube 1 are rotated synchronously by rotating the handle 3. Under the action of the bone penetration threads 13, the needle tube quickly passes through the bone surface and reaches the medullary cavity, while ensuring that the arc 12 avoids contact with the inner wall of the medullary cavity. The puncture depth of the bone penetration needle tube 1 can be judged by the scale markings 15 on its circumference to avoid perforating the medullary cavity.

[0046] Remove the bone marrow aspiration needle core 2 and insert a syringe or pressure measuring instrument at the syringe interface 35 to achieve bone marrow extraction or pressure measurement within the bone marrow cavity.

[0047] After the collection or testing area is completed, insert the bone marrow core 2 into the bone marrow tube 1 to drain the bone marrow in the bone marrow tube 1, then pull out the bone marrow tube 1, and finally pull out the bone marrow core 2.

[0048] Disconnect the bone aspiration needle 1 and the handle 3, and discard the bone aspiration needle 1 directly to avoid the risk of infection in the next operation due to reuse.

[0049] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0050] The above description is merely an example and illustration of the structure of this utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of this utility model.

Claims

1. A cancellous bone marrow decompression and pressure measurement puncture needle, characterized in that, include: The bone aspiration needle (1) has a spike (11) at one end and a handle thread (14) at the other end. The tip of the spike (11) has an avoidance arc (12) to avoid puncturing blood vessels when puncturing soft tissue. The periphery of the spike (11) has a bone aspiration thread (13) to facilitate bone penetration. The bone aspiration needle core (2) is fitted inside the bone aspiration needle tube (1); Handle (3) is connected to one end of the bone puncture needle tube (1) and has a through structure inside.

2. The cancellous bone marrow decompression and manometry puncture needle according to claim 1, characterized in that: The spiked portion (11) has a slanted spiked structure.

3. The cancellous bone marrow decompression and manometry puncture needle according to claim 2, characterized in that: The bone-penetrating threads (13) are distributed along the length of the spike (11), and the bone-penetrating threads (13) are used for the spiral bone-penetrating of the bone-penetrating needle tube (1).

4. The cancellous bone marrow decompression and manometry puncture needle according to claim 1, characterized in that: The bone aspiration needle (1) has graduation markings (15) on its circumference.

5. The cancellous bone marrow decompression and manometry puncture needle according to claim 4, characterized in that: The scale markings (15) are circular scale lines, and multiple scale markings (15) are provided at equal intervals along the length direction of the bone aspiration needle tube (1).

6. The cancellous bone marrow decompression and manometry puncture needle according to claim 1, characterized in that: The handle (3) includes a handle body (31), and a connecting sleeve (33) is sleeved on the handle body (31). The connecting sleeve (33) has a hollow structure, and one end of the connecting sleeve (33) has an internal thread (34) that is compatible with the handle thread (14).

7. The cancellous bone marrow decompression and manometry puncture needle according to claim 6, characterized in that: The handle body (31) is provided with a hand-held limiting plate (32) at one end away from the connecting sleeve (33), and the hand-held limiting plate (32) is symmetrically fixedly connected to the circumference of the handle body (31).

8. The cancellous bone marrow decompression and manometry puncture needle according to claim 1, characterized in that: The upper end of the handle (3) is provided with a syringe interface (35), which is connected to the inside of the bone aspiration needle (1).

9. The cancellous bone marrow decompression and manometry puncture needle according to claim 8, characterized in that: One end of the bone aspiration needle core (2) is formed with a puncture part (21), and the other end is fixedly provided with a limiting ring (22). The diameter of the end face of the limiting ring (22) is larger than the diameter of the syringe interface (35).

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