Bone marrow puncture extraction device

Abstract

The utility model relates to the technical field of medical instruments, and discloses a bone marrow puncture extraction device, including a connecting sleeve fixedly connected to the side of a pressure plate, the side of the connecting sleeve is clamped with a positioning block for connection, the side of the positioning block is fixedly connected with a puncture needle, the outer surface of the puncture needle is clamped with a clamping ring for positioning, and the side of the clamping ring is fixedly connected with a positioning sleeve for fixing. The bone marrow puncture extraction device, through the coordinated arrangement of the puncture needle, the clamping ring and the positioning sleeve, can clamp the positioning sleeve on the outer surface of the puncture needle through the clamping ring before the medical staff performs puncture, and after the medical staff inserts the puncture needle into the patient's body and reaches a suitable position, the positioning sleeve is fitted with the patient's skin, which can limit the puncture needle, thereby ensuring that the puncture needle will not twist when the medical staff extracts bone marrow fluid, reducing the tingling sensation.

Description

Technical Field

[0001] The utility model relates to the technical field of medical appliances, in particular to a bone marrow puncture and extraction device. Background Art

[0002] Hematology is a branch of internal medicine that mainly treats problems of the hematopoietic system. Hematology can also provide professional services for many non-hematological hematological problems and conduct a number of technical tests. Common red blood cell diseases such as anemia, iron deficiency anemia, aplastic anemia, abnormal hemoglobin disease, porphyria, etc. often require bone marrow puncture during hematology examinations. Bone marrow puncture and aspiration of bone marrow fluid is a traumatic examination method, usually completed in two steps: puncture first and then aspiration. The bone marrow puncture needle is a necessary medical device during the bone marrow puncture process.

[0003] Chinese patent announcement number CN204318803U discloses a hematology bone marrow puncture extraction device, which relates to the technical field of medical appliances, including a syringe, an inner needle and an outer needle, the top of the outer needle is conical, the outer wall of the top of the outer needle is evenly provided with through holes communicating with the inside of the outer needle, the lower end of the outer needle is connected with an outer needle seat, a sliding ring is sleeved on the outer needle seat, vertical rods are arranged at both ends above the sliding ring, a baffle is fixedly arranged on the vertical rod, a circular hole is arranged at the center of the baffle, the baffle is sleeved on the outer needle peripheral end through the circular hole, an inner needle is inserted in the outer needle, the lower end of the inner needle is connected with the inner needle seat, the upper end of the inner needle seat is matched with the lower end of the outer needle seat, the lower end of the inner needle seat is matched with the barrel mouth arranged at the upper end of the syringe, a piston is arranged in the syringe, a baffle ring is arranged on the inner wall of the syringe below the piston, and the lower end of the rubber piston is fixedly connected to the push rod. The utility model has a simple structure, is easy to use, and can accurately insert the needle, which reduces the pain of the patient and the work intensity of the medical staff.

[0004] However, the utility model has the following problems when actually used:

[0005] 1. In actual use, when medical staff insert the puncture needle into the patient's body, it is not convenient to limit the puncture needle, and the puncture needle may twist, which can increase the pain of the patient;

[0006] 2. In the prior art, before medical staff aspirate bone marrow fluid, they need to pull out the needle core before starting aspiration, which reduces the work efficiency of medical staff. Utility Model Content

[0007] 1. Technical issues to be resolved

[0008] In order to overcome the above-mentioned defects of the prior art, the utility model provides a bone marrow puncture and extraction device, which solves the problem in the prior art that when medical staff insert the puncture needle into the patient's body, it is inconvenient to limit the puncture needle, and the puncture needle may twist, thereby increasing the pain of the patient. Before the medical staff aspirates the bone marrow fluid, the needle core needs to be pulled out before aspiration can begin, thereby reducing the work efficiency of the medical staff.

[0009] (II) Technical solution

[0010] To achieve the above objectives, the utility model is implemented through the following technical solutions: a bone marrow puncture and extraction device, including a connecting sleeve fixedly connected to the side of a pressure plate, the side of the connecting sleeve is clamped with a positioning block for connection, the side of the positioning block is fixedly connected with a puncture needle, the outer surface of the puncture needle is clamped with a clamping ring for positioning, the side of the clamping ring is fixedly connected with a positioning sleeve for fixing, the side of the pressure plate is clamped with a connecting head for installation, and one end of the connecting head is clamped with a syringe for storage.

[0011] Optionally, a marking line for measurement is provided on the outer surface of the puncture needle, and a perforation for limiting is opened at one end of the puncture needle.

[0012] Optionally, one end of the puncture needle is fixedly connected to a mounting block for connection, and a side surface of the mounting block is fixedly connected to a side surface of the positioning block.

[0013] Optionally, a clamping shaft for clamping is fixedly connected to the side of the connector, and a needle core for circulation is fixedly connected to one end of the clamping shaft.

[0014] Optionally, a window for observation is provided on the outer surface of the syringe, and scale lines for measurement are provided on the outer surface of the syringe.

[0015] Optionally, one end of the syringe is fixedly connected to a side plate, and a threaded head for connection is fixedly connected to the side surface of the side plate.

[0016] Optionally, a piston for movement is clamped on one end of the syringe, and a pull rod for pulling is fixedly connected to the side of the piston.

[0017] Optionally, a cover for protection is clamped on the outer surface of the pull rod, and a disc for limiting is fixedly connected to one end of the pull rod.

[0018] (III) Beneficial effects

[0019] The utility model provides a bone marrow puncture extraction device, which has the following beneficial effects:

[0020] The bone marrow puncture and extraction device, through the coordinated arrangement of the puncture needle, the clamping ring and the positioning sleeve, can clamp the positioning sleeve on the outer surface of the puncture needle through the clamping ring before the medical staff performs puncture. After the medical staff inserts the puncture needle into the patient's body and reaches a suitable position, the positioning sleeve is fitted with the patient's skin to limit the puncture needle, thereby ensuring that the puncture needle will not twist when the medical staff extracts the bone marrow fluid, reducing the tingling sensation. The arrangement of the connecting sleeve and the positioning block can facilitate the medical staff to assemble the puncture needle more conveniently. The coordinated arrangement of the pressing plate, the connecting head and the syringe can facilitate the medical staff to insert the puncture needle into the patient's body and extract the patient's bone marrow fluid directly through the syringe after it is in a suitable position, thereby improving the work efficiency of the medical staff and further improving the convenience of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the puncture needle of the utility model;

[0023] Figure 3 This is a schematic diagram of the needle core structure of the utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the connector of the utility model;

[0025] Figure 5 This is a schematic diagram of the syringe structure of the utility model.

[0026] In the figure: 1. pressure plate; 2. connecting sleeve; 3. positioning block; 4. puncture needle; 5. retaining ring; 6. positioning sleeve; 7. connector; 8. syringe; 9. marking line; 10. mounting block; 11. clamping shaft; 12. needle core; 13. window; 14. side panel; 15. piston; 16. pull rod; 17. cover; 18. disc. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Embodiment 1:

[0029] See also Figure 1 and Figure 2In order to facilitate medical staff to observe the puncture depth of the puncture needle 4 and to fix the puncture needle 4, the utility model provides a technical solution: a bone marrow puncture extraction device, comprising a connecting sleeve 2 fixedly connected to the side of the pressing plate 1, a positioning block 3 for connection is clamped on the side of the connecting sleeve 2, a puncture needle 4 is fixedly connected to the side of the positioning block 3, a marking line 9 for measurement is provided on the outer surface of the puncture needle 4, one end of the puncture needle 4 is fixedly connected to a mounting block 10 for connection, and the side of the mounting block 10 is fixedly connected to the side of the positioning block 3;

[0030] The setting of the marking line 9 can facilitate the medical staff to observe the puncture depth more conveniently, further facilitating the operation of the medical staff. The setting of the mounting block 10 can facilitate the medical staff to fix the puncture needle 4 more firmly on the side of the positioning block 3, further ensuring that the puncture needle 4 is more stable during the puncture.

[0031] Embodiment 2:

[0032] See also Figures 1 to 4 In order to facilitate the medical staff to extract bone marrow fluid, the outer surface of the puncture needle 4 is clamped with a clamp ring 5 for positioning, the side of the clamp ring 5 is fixedly connected with a positioning sleeve 6 for fixing, the side of the pressing plate 1 is clamped with a connector 7 for installation, one end of the puncture needle 4 is provided with a perforation for limiting, the side of the connector 7 is fixedly connected with a clamping shaft 11 for clamping, and one end of the clamping shaft 11 is fixedly connected with a needle core 12 for circulation;

[0033] By setting the perforation and the needle core 12, the needle core 12 can be inserted into the perforation opened by the puncture needle 4. After the puncture needle 4 is punctured to a suitable position, the bone marrow fluid can be extracted through the needle core 12. By setting the clamping shaft 11, the needle core 12 can be more stably clamped on the side of the connector 7, thereby ensuring the stability of the needle core 12.

[0034] Embodiment three:

[0035] See also Figure 1 , Figure 4 and Figure 5 In order to facilitate the medical staff to more conveniently extract the bone marrow fluid into the syringe 8, one end of the connector 7 is clamped with a syringe 8 for storage, the outer surface of the syringe 8 is provided with a window 13 for observation, the outer surface of the syringe 8 is provided with scale lines for measurement, one end of the syringe 8 is fixedly connected with a side plate 14, the side of the side plate 14 is fixedly connected with a threaded head for connection, one end of the syringe 8 is clamped with a piston 15 for movement, the side of the piston 15 is fixedly connected with a pull rod 16 for pulling, the outer surface of the pull rod 16 is clamped with a cover 17 for protection, and one end of the pull rod 16 is fixedly connected with a disc 18 for limiting;

[0036] Through the setting of the viewing window 13 and the scale lines, medical staff can observe the internal situation of the syringe 8 more conveniently, so as to prevent excessive or insufficient extraction, which affects the detection effect. Through the setting of the piston 15, the pull rod 16 and the disc 18, medical staff can drive the piston 15 by pulling the pull rod 16, so as to extract the bone marrow fluid into the syringe 8. Through the setting of the side plate 14, the threaded head and the cover 17, the piston 15 can be protected to prevent impurities in the air from floating into the syringe 8, and at the same time it is convenient for medical staff to operate.

[0037] In the utility model, the working steps of the device are as follows:

[0038] First, the puncture needle 4 can be fixed to the side of the positioning block 3 through the mounting block 10. Secondly, the positioning sleeve 6 can be clamped on the outer surface of the puncture needle 4 through the clamping ring 5. When the positioning block 3 is passed through the connecting sleeve 2, the puncture needle 4 can be fixed to the side of the pressing plate 1. Then, the needle core 12 can be fixed to one end of the connector 7 through the clamping shaft 11. When the connector 7 is clamped on the side of the pressing plate 1, the needle core 12 passes through the pressing plate 1 and is inserted into the inside of the puncture needle 4. Finally, the syringe 8 is clamped at the other end of the connector 7, and the piston 15 and the pull rod 16 are clamped inside the syringe 8.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bone marrow puncture extraction device, comprising a connecting sleeve (2) fixedly connected to the side of a pressing plate (1), characterized in that: A positioning block (3) for connection is clamped on the side of the connecting sleeve (2), a puncture needle (4) is fixedly connected to the side of the positioning block (3), a clamping ring (5) for positioning is clamped on the outer surface of the puncture needle (4), a positioning sleeve (6) for fixing is fixedly connected to the side of the clamping ring (5), a connector (7) for installation is clamped on the side of the pressing plate (1), and a syringe (8) for storage is clamped on one end of the connector (7).

2. A bone marrow puncture and extraction device according to claim 1, characterized in that: The outer surface of the puncture needle (4) is provided with a marking line (9) for measurement, and one end of the puncture needle (4) is provided with a perforation for limiting position.

3. A bone marrow puncture and extraction device according to claim 1, characterized in that: One end of the puncture needle (4) is fixedly connected to a mounting block (10) for connection, and a side surface of the mounting block (10) is fixedly connected to a side surface of the positioning block (3).

4. A bone marrow puncture and extraction device according to claim 1, characterized in that: A clamping shaft (11) for clamping is fixedly connected to the side of the connector (7), and a needle core (12) for circulation is fixedly connected to one end of the clamping shaft (11).

5. A bone marrow puncture and extraction device according to claim 1, characterized in that: The outer surface of the syringe (8) is provided with a window (13) for observation, and the outer surface of the syringe (8) is provided with scale lines for measurement.

6. A bone marrow puncture and extraction device according to claim 1, characterized in that: One end of the syringe (8) is fixedly connected to a side plate (14), and a threaded head for connection is fixedly connected to the side surface of the side plate (14).

7. A bone marrow puncture and extraction device according to claim 1, characterized in that: A piston (15) for movement is clamped on one end of the syringe (8), and a pull rod (16) for pulling is fixedly connected to the side of the piston (15).

8. A bone marrow puncture and extraction device according to claim 7, characterized in that: A cover (17) for protection is clamped on the outer surface of the pull rod (16), and a disc (18) for limiting is fixedly connected to one end of the pull rod (16).

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