Bone marrow puncture needle capable of controlling collection volume

Abstract

The utility model relates to the technical field of bone marrow puncture needles, and discloses a bone marrow puncture needle capable of controlling the amount of collection. The puncture needle, a grip, a liquid extraction needle, a tapered needle head, a suction tube, a grip, a T-shaped ring groove, a T-shaped threaded sleeve, an adjusting threaded sleeve and a needle sleeve are used in combination. When the bone marrow puncture is completed, the side wall of the puncture needle will be against the side wall of the bone cortex. At this time, the tapered needle head on the bottom surface of the puncture needle will be in the bone marrow fluid. The bone marrow fluid on one side of the tapered needle head can be sucked by using the liquid extraction needle. When the bone marrow fluid on one side of the tapered needle head cannot meet the collection amount requirement, the T-shaped threaded sleeve is rotated so that the descending adjusting threaded sleeve pushes the tapered needle head to extend downward through the suction tube, thereby extending the depth of bone marrow puncture and sucking more bone marrow fluid. At this time, the puncture needle will not generate friction with the bone cortex, thereby reducing the pain and discomfort of the patient and further reducing the potential safety hazard. At the same time, a limiting device can fix the T-shaped threaded sleeve to facilitate the suction of bone marrow fluid.

Description

Technical Field

[0001] The utility model relates to the technical field of bone marrow puncture needles, in particular to a bone marrow puncture needle capable of controlling the amount of collection. Background Art

[0002] The bone marrow puncture needle is a special tool for bone marrow puncture, which is used to extract bone marrow fluid for various tests. Bone marrow puncture is an invasive examination method, which is often used clinically for the diagnosis of blood system diseases, such as the diagnosis and further classification of leukemia. It is also an important examination method for judging the treatment effect and prognosis.

[0003] But the following problems still exist:

[0004] Currently, during the bone marrow puncture process, when the current bone marrow puncture depth is unable to collect the required amount of bone marrow fluid, the bone marrow puncture needle needs to be rotated to deepen the puncture depth. However, the extended puncture needle will rub against the patient's cortical bone, which will increase the patient's pain and discomfort and may even cause accidental injury. Utility Model Content

[0005] The utility model aims to provide a bone marrow puncture needle capable of controlling the amount of collection, which can reduce the pain and discomfort caused by extending the puncture depth of the bone marrow puncture needle when adjusting the amount of bone marrow fluid collected.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A bone marrow puncture needle capable of controlling the amount of collection comprises a puncture needle, a handle, and a liquid extraction needle, wherein a conical needle head is provided on the bottom surface of the puncture needle, and a suction tube is fixedly connected to the upper surface of the conical needle head, the side wall of the suction tube is slidably connected to the inner wall of the puncture needle, and a T-shaped ring groove is provided on the upper surface of the handle, a T-shaped threaded sleeve is rotatably connected to the inner wall of the T-shaped ring groove, and an adjusting threaded sleeve is provided on the fixed sleeve of the side wall of the puncture needle located inside the T-shaped threaded sleeve, the adjusting threaded sleeve is threadedly connected to the inner wall of the T-shaped threaded sleeve, and a needle sleeve is fixedly connected to the upper surface of the adjusting threaded sleeve, the inner wall of the needle sleeve is slidably connected to the needle head of the liquid extraction needle, and a limiting device is provided below the T-shaped threaded sleeve.

[0008] Preferably, the limiting device includes a limiting slide groove opened on the bottom surface of the T-shaped ring groove, and the inner wall of the limiting slide groove is slidably connected with a cross limiting rod, the bottom surface of the T-shaped threaded sleeve located above the limiting slide groove is opened with multiple groups of annularly distributed limiting grooves, and one end of the cross limiting rod passes through the inner wall of the limiting slide groove and is slidably connected to the inner wall of the limiting groove, the other end of the cross limiting rod passes through the bottom surface of the limiting slide groove and is slidably connected to the limiting slide groove, and the side wall sleeve of the cross limiting rod located inside the limiting slide groove is provided with a limiting spring, one end of the limiting spring is fixedly connected to the side wall of the cross limiting rod, and the other end of the limiting spring is fixedly connected to the bottom surface of the limiting slide groove.

[0009] Preferably, the side wall of the cross limiting rod located inside the limiting groove has an inclined surface.

[0010] Preferably, a push rod is fixedly connected to the bottom surface of the cross limiting rod.

[0011] Preferably, the side wall of the T-shaped threaded sleeve is fixedly connected with an anti-slip strip.

[0012] Preferably, a flexible hose is provided at the connection between the conical needle and the suction tube, and one end of the flexible hose is fixedly connected to the upper surface of the conical needle, and the other end of the flexible hose is fixedly connected to the bottom surface of the suction tube.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The utility model cooperates with the puncture needle, the grip, the liquid extraction needle, the conical needle head, the suction tube, the grip, the T-shaped ring groove, the T-shaped threaded sleeve, the adjusting threaded sleeve and the needle sleeve in use. When the bone marrow puncture is completed, the side wall of the puncture needle will abut against the side wall of the bone cortex. At this time, the conical needle head on the bottom of the puncture needle will be in the bone marrow fluid. The bone marrow fluid on one side of the conical needle head can be sucked out by using the liquid extraction needle. When the bone marrow fluid on one side of the conical needle head cannot meet the collection volume requirement, the T-shaped threaded sleeve is rotated so that the descending adjusting threaded sleeve pushes the conical needle head to extend downward through the suction tube, thereby extending the depth of bone marrow puncture and sucking more bone marrow fluid. At this time, the puncture needle will not generate friction with the bone cortex, thereby reducing the patient's pain and discomfort, and then reducing safety hazards. At the same time, the limiting device can fix the T-shaped threaded sleeve for convenient suction of bone marrow fluid. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of a bone marrow puncture needle capable of controlling the amount of collection proposed by the utility model;

[0016] Figure 2 This is a schematic diagram of the side cross-sectional structure of a bone marrow puncture needle capable of controlling the amount of collection proposed by the utility model;

[0017] Figure 3 for Figure 2 The enlarged structural diagram at A in the middle;

[0018] Figure 4 for Figure 2 Schematic diagram of the enlarged structure at point B.

[0019] In the figure: 1. puncture needle; 2. grip; 3. withdrawal needle; 4. conical needle; 5. suction tube; 6. adjusting threaded sleeve; 7. T-shaped ring groove; 8. T-shaped threaded sleeve; 9. needle sleeve; 10. limiting slide groove; 11. cross limiting rod; 12. limiting spring; 13. limiting groove; 14. inclined surface; 15. push rod; 16. anti-slip strip; 17. flexible hose. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] See also Figure 1-4 A bone marrow puncture needle with controllable collection volume comprises a puncture needle 1, a handle 2, and a liquid extraction needle 3. The bottom surface of the puncture needle 1 is provided with a conical needle head 4, and the upper surface of the conical needle head 4 is fixedly connected with a suction tube 5, the side wall of the suction tube 5 is slidably connected to the inner wall of the puncture needle 1, and the upper surface of the handle 2 is provided with a T-shaped ring groove 7, the inner wall of the T-shaped ring groove 7 is rotatably connected with a T-shaped threaded sleeve 8, and the side wall of the puncture needle 1 located inside the T-shaped threaded sleeve 8 is fixedly sleeved with an adjusting threaded sleeve 6, the adjusting threaded sleeve 6 is threadedly connected to the inner wall of the T-shaped threaded sleeve 8, and the upper surface of the adjusting threaded sleeve 6 is fixedly connected with a needle sleeve 9, the inner wall of the needle sleeve 9 is slidably connected to the needle head of the liquid extraction needle 3, and a limiting device is provided below the T-shaped threaded sleeve 8.

[0022] It can be seen from the above structure that; by arranging the puncture needle 1, the handle 2, the extraction needle 3, the conical needle head 4, the suction tube 5, the handle 2, the T-shaped ring groove 7, the T-shaped threaded sleeve 8, the adjusting threaded sleeve 6 and the needle sleeve 9 for use in combination, when the bone marrow puncture is completed, the side wall of the puncture needle 1 will be against the side wall of the bone cortex. At this time, the conical needle head 4 on the bottom of the puncture needle 1 will be in the bone marrow fluid. The bone marrow fluid on one side of the conical needle head 4 can be sucked out by using the extraction needle 3. When the bone marrow fluid on one side of the conical needle head 4 cannot meet the collection volume requirement, the T-shaped threaded sleeve 8 is rotated so that the descending adjusting threaded sleeve 6 pushes the conical needle head 4 to extend downward through the suction tube 5, thereby extending the depth of bone marrow puncture and sucking more bone marrow fluid. At this time, the puncture needle 1 will not produce friction with the bone cortex, thereby reducing the patient's pain and discomfort, and then reducing safety hazards. At the same time, the limiting device can fix the T-shaped threaded sleeve 8 for convenient suction of bone marrow fluid.

[0023] Furthermore, the limiting device includes a limiting slide groove 10 provided on the bottom surface of the T-shaped ring groove 7, and the inner wall of the limiting slide groove 10 is slidably connected with a cross limiting rod 11, and the bottom surface of the T-shaped threaded sleeve 8 located above the limiting slide groove 10 is provided with multiple groups of annularly distributed limiting grooves 13, and one end of the cross limiting rod 11 passes through the inner wall of the limiting slide groove 10 and is slidably connected to the inner wall of the limiting groove 13, and the other end of the cross limiting rod 11 passes through the bottom surface of the limiting slide groove 10 and is slidably connected to the limiting slide groove 10, and a limiting spring 12 is sleeved on the side wall of the cross limiting rod 11 located inside the limiting slide groove 10, one end of the limiting spring 12 is fixedly connected to the side wall of the cross limiting rod 11, and the other end of the limiting spring 12 is fixedly connected to the bottom surface of the limiting slide groove 10; by setting the limiting slide groove 10, the cross limiting rod 11, The limit groove 13 and the limit spring 12 are used in combination. When the puncture depth needs to be adjusted, the cross limit rod 11 is pulled downward to squeeze the limit spring 12, so that one end of the cross limit rod 11 in the limit groove 13 slides out of the limit groove 13, and then the T-shaped threaded sleeve 8 can be rotated to make the adjustment threaded sleeve 6 threadedly connected with the T-shaped threaded sleeve 8 descend, thereby pushing the suction tube 5 to slide along the inner wall of the puncture needle 1, and pushing the conical needle 4 fixedly connected to the bottom surface of the suction tube 5 to extend deeper. When the required position is reached, the cross limit rod 11 is released, and the limit spring 12 will push the cross limit rod 11 to automatically slide into the limit groove 13 to fix the T-shaped threaded sleeve 8, thereby fixing the adjustment threaded sleeve 6, the suction tube 5 and the conical needle 4, thereby facilitating the staff to use the liquid extraction needle 3 to complete the extraction of bone marrow fluid.

[0024] Furthermore, the side wall of the cross limit rod 11 located inside the limit groove 13 is provided with an inclined surface 14; due to the design of the inclined surface 14, when the T-shaped threaded sleeve 8 is rotated to deepen the puncture depth, the inner wall of the limit groove 13 on the bottom surface of the T-shaped threaded sleeve 8 will slide along the inclined surface 14, pushing the cross limit rod 11 to automatically slide down and disengage from the limit groove 13, without the need to pull the cross limit rod 11, thereby facilitating medical personnel to adjust the puncture depth.

[0025] Furthermore, a push rod 15 is fixedly connected to the bottom surface of the cross limit rod 11; by setting the push rod 15, when collecting the puncture needle 1, it is necessary to rotate the T-shaped threaded sleeve 8 in the opposite direction, so that the adjusting threaded sleeve 6 drives the suction tube 5 and the conical needle head 4 to rise, and when the conical needle head 4 is in contact with the bottom surface of the puncture needle 1, the puncture needle 1 can be taken out. At this time, the push rod 15 can be pushed to drive the cross limit rod 11 to slide downward and disengage from the limit groove 13, and the T-shaped threaded sleeve 8 can be rotated in the opposite direction, thereby improving the convenience of operation for medical staff.

[0026] Furthermore, the side wall of the T-shaped threaded sleeve 8 is fixedly connected with an anti-slip strip 16; by providing the anti-slip strip 16, the friction between the T-shaped threaded sleeve 8 and the palm is enhanced, and the rotation of the T-shaped threaded sleeve 8 is facilitated.

[0027] Furthermore, a flexible hose 17 is provided at the connection between the conical needle 4 and the suction tube 5, and one end of the flexible hose 17 is fixedly connected to the upper surface of the conical needle 4, and the other end of the flexible hose 17 is fixedly connected to the bottom surface of the suction tube 5; the design of the flexible hose 17 allows the conical needle 4 to provide a certain bending curve when extending to a depth, so that the conical needle 4 will not penetrate the bone marrow cavity into the opposite bone cortex or penetrate the bone, thereby reducing safety hazards.

[0028] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A bone marrow puncture needle capable of controlling the amount of collected blood, comprising a puncture needle (1), a handle (2), and a liquid extraction needle (3), characterized in that: The bottom surface of the puncture needle (1) is provided with a conical needle head (4), and the upper surface of the conical needle head (4) is fixedly connected with a suction tube (5), the side wall of the suction tube (5) is slidably connected to the inner wall of the puncture needle (1), and the upper surface of the grip (2) is provided with a T-shaped ring groove (7), the inner wall of the T-shaped ring groove (7) is rotatably connected with a T-shaped threaded sleeve (8), and the side wall fixed sleeve of the puncture needle (1) located inside the T-shaped threaded sleeve (8) is provided with an adjusting threaded sleeve (6), the adjusting threaded sleeve (6) is threadedly connected to the inner wall of the T-shaped threaded sleeve (8), and the upper surface of the adjusting threaded sleeve (6) is fixedly connected with a needle sleeve (9), the inner wall of the needle sleeve (9) is slidably connected to the needle head of the liquid extraction needle (3), and a limiting device is provided below the T-shaped threaded sleeve (8).

2. A bone marrow puncture needle capable of controlling the amount of collection according to claim 1, characterized in that: The limiting device comprises a limiting slide groove (10) provided on the bottom surface of the T-shaped ring groove (7), and the inner wall of the limiting slide groove (10) is slidably connected with a cross limiting rod (11), and the bottom surface of the T-shaped threaded sleeve (8) located above the limiting slide groove (10) is provided with a plurality of groups of annularly distributed limiting grooves (13), and one end of the cross limiting rod (11) passes through the inner wall of the limiting slide groove (10) and is slidably connected to the inner wall of the limiting groove (13), and the other end of the cross limiting rod (11) passes through the bottom surface of the limiting slide groove (10) and is slidably connected to the limiting slide groove (10), and a limiting spring (12) is sleeved on the side wall of the cross limiting rod (11) located inside the limiting slide groove (10), and one end of the limiting spring (12) is fixedly connected to the side wall of the cross limiting rod (11), and the other end of the limiting spring (12) is fixedly connected to the bottom surface of the limiting slide groove (10).

3. A bone marrow puncture needle capable of controlling the amount of collection according to claim 2, characterized in that: The side wall of the cross limiting rod (11) located inside the limiting groove (13) is provided with an inclined surface (14).

4. A bone marrow puncture needle capable of controlling the amount of collection according to claim 2 or 3, characterized in that: A push rod (15) is fixedly connected to the bottom surface of the cross limiting rod (11).

5. A bone marrow puncture needle capable of controlling the amount of collection according to claim 1 or 2, characterized in that: The side wall of the T-shaped threaded sleeve (8) is fixedly connected with an anti-slip strip (16).

6. A bone marrow puncture needle capable of controlling the amount of collection according to claim 1, characterized in that: A flexible hose (17) is provided at the connection between the conical needle (4) and the suction tube (5), and one end of the flexible hose (17) is fixedly connected to the upper surface of the conical needle (4), and the other end of the flexible hose (17) is fixedly connected to the bottom surface of the suction tube (5).

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