Bone marrow puncture outfit

Abstract

The invention discloses a bone marrow puncture outfit which comprises a connecting ring (1), a positioning application (2), a vertical limiting mechanism (3), a mounting seat (4), a bearing ring (6), a limiting seat (8), a bone marrow puncture needle (9) and a positioning mechanism (10). The positioning application (2) in the bone marrow puncture outfit can be tightly attached to the skin of the part to be punctured, accurate positioning of the bone marrow puncture outfit is achieved, and operation is easy. The vertical limiting mechanism (3) can limit the lifting of the mounting seat (4) and the limiting seat (8), so that the bone marrow puncture needle (9) is prevented from shaking and shifting in the descending puncture process, and the puncture stability of the bone marrow puncture outfit is improved. The bone marrow puncture outfit is small in size, accurate in positioning and high in puncture stability.

Description

Technical Field

[0001] This invention belongs to the field of orthopedic medical device technology, specifically, it relates to a bone marrow aspiration device. Background Technology

[0002] Bone marrow aspiration is a technique that involves inserting a needle into the bone marrow cavity to extract a portion of bone marrow for cytological examination, etiological examination, pathological examination, immunological examination, and genetic testing. In orthopedic surgery, it is often necessary to use a bone marrow aspirator to perform bone marrow aspiration to obtain samples from lesions for examination. However, most existing bone marrow aspirators have various defects and cannot meet current needs.

[0003] Patent application CN202320816554.3 discloses a positionable bone marrow aspiration needle. It includes a hollow positioning seat and a bone marrow aspiration needle, with the needle placed inside the hollow positioning seat. The lower part of the hollow positioning seat is cut at an angle, and a fixing device is installed on the hollow positioning seat. The fixing device includes a first binding strap, a Velcro loop side, a second binding strap, a Velcro bar side, two grooves, and two sliders. The Velcro loop side is sewn onto the first binding strap, the Velcro bar side is sewn onto the second binding strap, and the two grooves are respectively located on both sides of the hollow positioning seat. In short, this positionable bone marrow aspiration needle achieves positioning using a binding strap combined with Velcro restraint. It can be seen that the above positioning structure is large in size and cumbersome to operate, making it inconvenient to use. Furthermore, restraining the needle by wrapping it around the patient's body during surgery is not only complex but also prone to causing secondary injury to the patient.

[0004] Patent application CN202320374800.4 discloses a bone marrow aspiration device. It uses an extended needle inserted into the patient's body to extract bone marrow from the bones. During the puncture, without any auxiliary fixation device, manual force is applied to insert the needle into the bone to extract the bone marrow. Because it lacks positioning and fixation devices, positional deviations are highly likely during the operation; furthermore, since the puncture force depends entirely on manual operation, deviations in force or instability are prone to occur. Therefore, this bone marrow aspiration device not only easily leads to bone marrow extraction failure but also easily causes secondary injury to the body.

[0005] To address the problems existing in current technologies, there is an urgent need for a bone marrow aspiration device that is accurate in positioning, highly mechanized, and easy to use. Summary of the Invention

[0006] To address the problems existing in the prior art, the present invention provides a bone marrow aspiration device that is highly stable and easy to operate.

[0007] According to one aspect of the present invention, a bone marrow aspiration device is provided, comprising a connecting ring 1, a positioning dressing 2, a vertical limiting mechanism 3, a mounting base 4, a receiving ring 6, a limiting base 8, a bone marrow aspiration needle 9, and a positioning mechanism 10. The positioning patch 2 is fixedly disposed on the bottom surface of the connecting ring 1; The connecting ring 1 and the mounting base 4 are connected by the vertical limiting mechanism 3; The mounting base 4 and the receiving ring 6 are connected by a connecting rod 5 disposed on the outer ring of the mounting base 4; The limiting seat 8 is fixedly disposed on the top surface of the mounting seat 4; The bone marrow aspiration needle 9 is movably disposed inside the limiting seat 8; The positioning mechanism 10 is disposed above the mounting base 4, and the positioning mechanism 10 is used to position the bone marrow puncture needle 9.

[0008] According to a specific embodiment of the present invention, the vertical limiting mechanism 3 includes: multiple limiting rods 301 in matching quantities, a top stop block 302, and a rubber slide block 303; Multiple limiting rods 301 are fixedly disposed at equal angles on the top of the connecting ring 1; The top stop 302 is fixedly disposed at the top end of the limiting rod 301; The rubber slide 303 is sleeved on the surface of the limiting rod 301.

[0009] According to another specific embodiment of the present invention, the mounting base 4 is fixedly connected to the rubber slide 303, and is slidably connected to the limiting rod 301 through the rubber slide 303.

[0010] According to another specific embodiment of the present invention, the connecting rod 5 includes at least 3 rods, which are evenly arranged at equal angles between the mounting base 4 and the receiving ring 6.

[0011] According to another specific embodiment of the present invention, the positioning mechanism 10 includes: a plurality of matching limiting seats 1001, a telescopic rod 1002, a sliding buckle 1003 and a first spring 1004; The limiting seat 1001 is disposed at equal angles on the top surface of the mounting seat 4; One end of the telescopic rod 1002 is fixed to the inner wall of the limiting seat 1001, and the other end is connected to the sliding buckle 1003; The two ends of the first spring 1004 are fixedly connected to the inner wall of the limiting seat 1001 and the sliding buckle 1003, respectively.

[0012] According to yet another specific embodiment of the present invention, The top outer ring of the bone marrow aspiration needle 9 is provided with a groove 1005, which matches the sliding buckle 1003.

[0013] According to another specific embodiment of the present invention, the bone marrow puncture device further includes: a bone marrow extractor 12; The bone marrow extractor 12 is movably connected to the tip of the bone marrow puncture needle 9.

[0014] According to another specific embodiment of the present invention, the bone marrow aspiration device further includes: a release mechanism 11; The release mechanism 11 is fixedly connected to the receiving ring 6 and is used to release the bone marrow puncture needle 9.

[0015] According to another specific embodiment of the present invention, the release mechanism 11 includes: a plurality of second springs 1101, a connecting plate 1102, a movable ring 1103 and a pressing plate 1104; The second spring 1101 is symmetrically arranged on the top surface of the receiving ring 6; The connecting plate 1102 is fixedly connected to the top end of the second spring 1101; The movable ring 1103 is disposed on the inner ring of the connecting plate 1102; The extrusion plate 1104 is connected to the bottom end of the movable ring 1103.

[0016] According to another specific embodiment of the present invention, the extrusion plates 1104 are evenly distributed at the bottom of the movable ring 1103, and the bottom of the extrusion plates 1104 is in close contact with the top surface of the sliding buckle 1003.

[0017] The bone marrow aspiration device provided by this invention uses a positioning patch to achieve a close fit with the skin at the puncture site, thereby achieving accurate positioning of the bone marrow aspiration device. It is simple to operate and provides accurate positioning. The vertical limiting mechanism limits the raising and lowering of the mounting base and the limiting base, preventing the bone marrow aspiration needle from shaking or deviating during descent, thus improving puncture stability. Furthermore, the operating plate, in conjunction with the receiving ring and connecting rod, enables the mounting base and bone marrow aspiration needle to perform a labor-saving puncture. This labor-saving operation not only improves the usability of the bone marrow aspiration device but also further enhances puncture stability.

[0018] The limiting seat can provide anastomosing restraint for the installed bone marrow aspiration needle, and together with the positioning mechanism, it can lock and position the bone marrow aspiration needle, which is conducive to the stable installation of the bone marrow aspiration needle and solves the problem of the bone marrow aspiration needle easily falling off during the puncture process.

[0019] The release mechanism facilitates the release of the positioning mechanism after puncture, enabling convenient disassembly of the bone marrow aspiration needle. This improves the ease of use of the bone marrow aspiration device and, to some extent, avoids secondary harm to the patient that may be caused by disassembling the bone marrow aspiration needle.

[0020] The bone marrow aspiration device provided by this invention is easy to install and remove, has accurate positioning, and is simple to operate; it is also highly safe and easy to promote and use on a large scale. Attached Figure Description

[0021] Other features, objects, and advantages of the invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 The diagram shown is a structural schematic of a specific embodiment of a bone marrow aspiration device provided by the present invention; Figure 2 The diagram shown is a schematic representation of a specific embodiment of a bone marrow aspiration device according to the present invention, in which a vertical limiting mechanism is connected to a mounting base. Figure 3 The diagram shown is a schematic representation of a specific embodiment of a bone marrow aspiration device according to the present invention, in which the bone marrow aspiration needle is connected to a positioning mechanism. Figure 4 The diagram shown is a structural schematic of a specific embodiment of the positioning mechanism in a bone marrow aspiration device provided by the present invention. Figure 5 The diagram shown is a structural schematic of a specific embodiment of the release mechanism in a bone marrow aspiration device provided by the present invention.

[0022] The same or similar reference numerals in the accompanying drawings represent the same or similar parts.

[0023] The attached figures are labeled as follows: 1. Connecting ring; 2. Positioning dressing; 3. Vertical limiting mechanism; 301. Limiting rod; 302. Top stop block; 303. Rubber slide; 4. Mounting seat; 5. Connecting rod; 6. Receiving ring; 7. Operating panel; 8. Limiting seat; 9. Bone marrow puncture needle; 10. Positioning mechanism; 1001. Limiting seat; 1002. Telescopic rod; 1003. Sliding buckle; 1004. First spring; 1005. Slot; 11. Release mechanism; 1101. Second spring; 1102. Connecting plate; 1103. Movable ring; 1104. Squeezing plate; 12. Bone marrow extractor. Detailed Implementation

[0024] The following disclosure provides numerous different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, components and arrangements of specific examples are described below. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. It should be noted that the components illustrated in the drawings are not necessarily drawn to scale. Descriptions of well-known components, processing techniques, and processes are omitted to avoid unnecessarily limiting the invention.

[0025] See Figures 1-5 The present invention provides a bone marrow aspiration device. The bone marrow aspiration device includes a connecting ring 1, a positioning dressing 2, a vertical limiting mechanism 3, a mounting base 4, a receiving ring 6, a limiting base 8, a bone marrow aspiration needle 9, and a positioning mechanism 10.

[0026] A positioning patch 2 is fixedly installed on the bottom surface of the connecting ring 1. The positioning patch 2 is used to fix the bone marrow aspirator onto the skin of the patient to be punctured.

[0027] The connecting ring 1 and the mounting base 4 are connected by the vertical limiting mechanism 3.

[0028] Preferably, the vertical limiting mechanism 3 includes: multiple limiting rods 301 in matching numbers, a top stop block 302, and a rubber slide block 303. The multiple limiting rods 301 are fixedly disposed at equal angles on the top of the connecting ring 1. Preferably, three limiting rods 301 are disposed at 120° intervals on the top of the connecting ring 1. The triangular structure provides high stability and reduces the likelihood of subsequent displacement. The top stop block 302 is fixedly disposed on the top of the limiting rod 301. The rubber slide block 303 is fitted onto the surface of the limiting rod 301, and can slide up and down along the limiting rod 301 with damping. The use of rubber material effectively controls the sliding speed of the rubber slide block 303 along the limiting rod 301, which helps ensure the stability of the bone marrow puncture needle 9 movement.

[0029] The mounting base 4 and the receiving ring 6 are connected by connecting rods 5 disposed on the outer ring of the mounting base 4. The outer ring of the mounting base 4 is provided with connecting rods 5, and the top end of each connecting rod 5 is fixedly connected to the receiving ring 6. The connecting rods 5 are evenly distributed between the mounting base 4 and the receiving ring 6. Preferably, three connecting rods 5 are provided, and each pair of connecting rods 5 is spaced at a 120° angle to improve connection stability. The mounting base 4 is fixedly connected to the rubber slide 303, and slidably connected to the limiting rod 301 through the rubber slide 303. Furthermore, operating plates 7 are symmetrically installed on the outer side of the receiving ring 6.

[0030] During use, pressing the operating plate 7 simultaneously lowers the receiving ring 6; as the receiving ring 6 descends, it also lowers the connecting rod 5 connected to it; thus, it drives the mounting base 4 and the bone marrow aspiration needle 9 inside it to descend for puncture. During the descent of the mounting base 4, due to the presence of friction, the rubber slide 303 slides along the limiting rod 301 in a damped manner, which helps the limiting rod 301 to effectively limit the rubber slide 303, the mounting base 4, and the bone marrow aspiration needle 9, thereby improving the stability of the puncture operation.

[0031] See Figure 2 The limiting seat 8 is fixedly disposed on the top surface of the mounting seat 4, and the bone marrow puncture needle 9 is movably disposed inside the limiting seat 8.

[0032] The positioning mechanism 10 is disposed above the mounting base 4, and is used to position the bone marrow aspiration needle 9. Preferably, the positioning mechanism 10 includes: a plurality of matching limiting seats 1001, a telescopic rod 1002, a sliding buckle 1003, and a first spring 1004, as shown below. Figure 3 and Figure 4 As shown.

[0033] The limiting seat 1001 is angledly disposed on the top surface of the mounting base 4; one end of the telescopic rod 1002 is fixed to the inner wall of the limiting seat 1001, and the other end is connected to the sliding buckle 1003; both ends of the first spring 1004 are respectively fixedly connected to the inner wall of the limiting seat 1001 and the sliding buckle 1003. A groove 1005 is provided on the outer ring of the top of the bone marrow aspiration needle 9, and the groove 1005 matches the sliding buckle 1003. After matching, the bone marrow aspiration needle 9 can be positioned and locked. To better engage the sliding buckle 1003 and the groove 1005, the sliding buckle 1003 preferably adopts a wedge-shaped structure.

[0034] Specifically, during the downward installation of the bone marrow aspiration needle 9, the outer surface of the bone marrow aspiration needle 9 compresses the sliding buckle 1003, causing it to retract inside the limiting seat 1001. When the sliding buckle 1003 aligns with the slot 1005, the first spring 1004 pushes the sliding buckle 1003 back to its original position, causing the sliding buckle 1003 to engage with the slot 1005. The above operation achieves the positioning and installation of the bone marrow aspiration needle 9, wherein the telescopic rod 1002 limits the extension and retraction of the sliding buckle 1003.

[0035] Preferably, the bone marrow aspiration apparatus further includes a bone marrow extractor 12. The bone marrow extractor 12 is movably connected to the tip of the bone marrow aspiration needle 9. After the bone marrow aspiration needle 9 completes the puncture, the bone marrow extractor 12 can be connected to the tip of the bone marrow aspiration needle 9 and used to extract bone marrow from the patient.

[0036] To facilitate the disassembly of the bone marrow aspiration needle 9 and improve the overall ease of operation and safety of the bone marrow aspiration device, preferably, the bone marrow aspiration device provided by the present invention further includes: a release mechanism 11, such as... Figure 5 As shown. The release mechanism 11 is fixedly connected to the receiving ring 6 and is used to release the bone marrow puncture needle 9.

[0037] Preferably, the release mechanism 11 includes: a plurality of second springs 1101, a connecting plate 1102, a movable ring 1103, and a pressing plate 1104. The second springs 1101 are symmetrically arranged on the top surface of the receiving ring 6, and the connecting plate 1102 is fixedly connected to the top end of the second springs 1101. The symmetrical arrangement of the second springs 1101 helps to ensure the balance of the connecting plate 1102. Figure 5 As shown, the second spring 1101 can also be set in groups. Figure 5 In the middle, the second spring 1101 is divided into two groups, each group consisting of three springs, and the two groups are symmetrically arranged on the top surface of the receiving ring 6. The combination of multiple springs can make the elastic force between the two groups as equal as possible, further ensuring the balance of the connecting plate 1102 and improving its stability.

[0038] The movable ring 1103 is disposed on the inner ring of the connecting plate 1102, and the pressing plate 1104 is connected to the bottom end of the movable ring 1103. Preferably, the pressing plates 1104 are evenly distributed on the bottom of the movable ring 1103, and the bottom of the pressing plates 1104 is in close contact with the top surface of the sliding buckle 1003.

[0039] If it is necessary to disassemble the bone marrow aspiration needle 9, simply press the connecting plate 1102. Pressing down on the connecting plate 1102 causes the movable ring 1103 to descend synchronously. The descent of the movable ring 1103 causes the compression plate 1104 to compress the sliding buckle 1003. After compression to a certain extent, the sliding buckle 1003 retracts into the limiting seat 1001, releasing the engagement between it and the slot 1005. At this point, the restriction on the bone marrow aspiration needle 9 is released, thus achieving successful disassembly of the bone marrow aspiration needle 9. The second spring 1101 allows the connecting plate 1102, the movable ring 1103, and the compression plate 1104 to reset, ensuring that the positioning mechanism 10's positioning and installation of the bone marrow aspiration needle 9 is not affected. The bone marrow aspiration device provided by this invention releases the elastic engagement of the positioning mechanism 10 by pressing down on the release mechanism 11, thereby safely and conveniently releasing the positioning of the bone marrow aspiration needle.

[0040] The following is in conjunction with the appendix Figures 1-5The working principle of the bone marrow aspiration device provided by this invention is further explained. When using this device, firstly, the bone marrow aspiration needle 9 is inserted into the restrictor seat 8 and the mounting seat 4, allowing the first spring 1004 to push the sliding buckle 1003 out and engage with the slot 1005, thus positioning the bone marrow aspiration needle 9 inside the restrictor seat 8. Secondly, the center of the positioning dressing 2 is aligned with the puncture site and applied to the skin. By pressing down the operating plate 7, the connecting rod 5 causes the mounting seat 4 to descend synchronously, simultaneously lowering the restrictor seat 8 and the bone marrow aspiration needle 9. After descending, the bone marrow aspiration needle 9 can be used for puncture. During the descent of the mounting seat 4, the rubber slide 303 descends along the limiting rod 301 in a damped, limited manner. This limiting effectively controls the descent speed of the bone marrow aspiration needle 9, improving the safety and stability of the puncture. Thirdly, after completing the puncture operation, the bone marrow extractor 12 is connected to the tip of the bone marrow aspiration needle 9 to facilitate bone marrow extraction. After connection, the operating plate 7, receiving ring 6, and connecting rod 5 are used to raise the mounting base 4 and limiting base 8, allowing the bone marrow puncture needle 9 to be withdrawn, and then the positioning dressing 2 to be separated from the skin. This process enables bone marrow puncture and extraction. When disassembly of the bone marrow puncture needle 9 is required, simply press down on the connecting plate 1102. As the connecting plate 1102 descends, it simultaneously lowers the movable ring 1103 and the compression plate 1104; as the compression plate 1104 descends, it compresses the sliding buckle 1003, causing it to retract; when the sliding buckle 1003 retracts into the limiting base 1001, it releases the engagement with the slot 1005, thus separating the bone marrow puncture needle 9 from the limiting base 8, and thus disassembling the bone marrow puncture needle 9.

[0041] The bone marrow aspiration device provided by this invention is easy to install and remove, has accurate positioning, is simple to operate, and is highly safe and easy to promote.

[0042] While exemplary embodiments and their advantages have been described in detail, it should be understood that various changes, substitutions, and modifications can be made to these embodiments without departing from the spirit of the invention and the scope of protection defined by the appended claims. For other examples, those skilled in the art should readily understand that the order of process steps can be varied while remaining within the scope of the invention.

[0043] Furthermore, the scope of this invention is not limited to the processes, mechanisms, manufacturing methods, material compositions, means, methods, and steps of the specific embodiments described in the specification. From the disclosure of this invention, those skilled in the art will readily understand that any existing or future processes, mechanisms, manufacturing methods, material compositions, means, methods, or steps that perform substantially the same function or obtain substantially the same results as the corresponding embodiments described in this invention can be applied according to this invention. Therefore, the appended claims are intended to include these processes, mechanisms, manufacturing methods, material compositions, means, methods, or steps within their scope of protection.

Claims

1. A bone marrow aspiration device, comprising a connecting ring (1), a positioning dressing (2), a vertical limiting mechanism (3), a mounting base (4), a receiving ring (6), a limiting base (8), a bone marrow aspiration needle (9), and a positioning mechanism (10); characterized in that, The positioning patch (2) is fixedly disposed on the bottom surface of the connecting ring (1); The connecting ring (1) and the mounting base (4) are connected by the vertical limiting mechanism (3); The mounting base (4) and the receiving ring (6) are connected by a connecting rod (5) provided on the outer ring of the mounting base (4); The limiting seat (8) is fixedly disposed on the top surface of the mounting seat (4); The bone marrow aspiration needle (9) is movably disposed inside the limiting seat (8); The positioning mechanism (10) is located above the mounting base (4) and is used to position the bone marrow puncture needle (9).

2. The bone marrow aspiration device according to claim 1, characterized in that, The vertical limiting mechanism (3) includes: multiple limiting rods (301) of matching quantity, a top stop (302) and a rubber slide (303); Multiple limiting rods (301) are fixedly disposed at equal angles on the top of the connecting ring (1); The top stop (302) is fixedly installed at the top of the limiting rod (301); The rubber slide (303) is sleeved on the surface of the limiting rod (301).

3. The bone marrow aspiration device according to claim 2, characterized in that, The mounting base (4) is fixedly connected to the rubber slide (303) and slidably connected to the limiting rod (301) through the rubber slide (303).

4. The bone marrow aspiration device according to claim 3, characterized in that, The connecting rod (5) includes at least 3 rods, which are evenly arranged at equal angles between the mounting base (4) and the receiving ring (6).

5. The bone marrow aspiration device according to claim 4, characterized in that, The positioning mechanism (10) includes: a plurality of matching limit seats (1001), a telescopic rod (1002), a sliding buckle (1003) and a first spring (1004). The limiting seat (1001) is set at an equal angle on the top surface of the mounting seat (4); One end of the telescopic rod (1002) is fixed to the inner wall of the limiting seat (1001), and the other end is connected to the sliding buckle (1003); The two ends of the first spring (1004) are fixedly connected to the inner wall of the limiting seat (1001) and the sliding buckle (1003), respectively.

6. The bone marrow aspiration device according to claim 5, characterized in that, The top outer ring of the bone marrow aspiration needle (9) is provided with a groove (1005), which matches the sliding buckle (1003).

7. The bone marrow aspiration device according to claim 6, characterized in that, The bone marrow aspiration device also includes: a bone marrow extractor (12). The bone marrow extractor (12) is movably connected to the tip of the bone marrow puncture needle (9).

8. The bone marrow aspiration device according to claim 7, characterized in that, The bone marrow aspiration device also includes: a release mechanism (11). The release mechanism (11) is fixedly connected to the receiving ring (6) and is used to release the bone marrow puncture needle (9).

9. The bone marrow aspiration device according to claim 8, characterized in that, The release mechanism (11) includes: a plurality of second springs (1101), a connecting plate (1102), a movable ring (1103) and a compression plate (1104). The second spring (1101) is symmetrically arranged on the top surface of the receiving ring (6); The connecting plate (1102) is fixedly connected to the top end of the second spring (1101); The movable ring (1103) is disposed on the inner ring of the connecting plate (1102); The extrusion plate (1104) is connected to the bottom end of the movable ring (1103).

10. The bone marrow aspiration device according to claim 9, characterized in that, The extrusion plates (1104) are evenly distributed at the bottom of the movable ring (1103), and the bottom of the extrusion plates (1104) is in close contact with the top surface of the sliding buckle (1003).

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