Bone marrow puncture device for hematology department

Abstract

The utility model relates to the field of medical instruments, in particular to a bone marrow puncture device for the hematology department. In order to solve the problems that in the bone marrow puncture process, the puncture depth of a needle core is not convenient to accurately control, so that puncture fails, puncture needs to be conducted again, pain is brought to a patient, and the puncture diagnosis sampling and treatment time is prolonged. When a puncture operation is carried out, the needle inserting depth of the needle cylinder is equivalently measured through the moving distance of the limiting cylinder, the puncture depth of a needle core is accurately controlled, the success rate of puncture is increased, the time for puncture diagnosis sampling and treatment is shortened, and repeated puncture is avoided; the connecting cylinder can be blocked in time, so that the puncture needle is prevented from puncturing too deep, the puncture accuracy is improved, meanwhile, the mounting assembly is arranged, the limiting ring is adjusted to limit the needle core, the needle core can be quickly disassembled and assembled, and the convenience of pulling the needle core out of the needle cylinder is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical equipment technical field especially relates to a blood department bone marrow puncture device. BACKGROUND

[0002] Bone marrow puncture is a kind of commonly used diagnostic technique for collecting bone marrow fluid, and bone marrow puncture fluid is often used for blood cell morphology examination in clinic, and can also be used for hematopoietic stem cell culture, cytogenetic analysis and pathogenic biology examination etc., to assist clinical diagnosis, observation of curative effect and prognosis etc., doctors generally directly hold puncture needle to the bone marrow of people, and the puncture depth of needle core cannot be accurately controlled in the process of bone marrow puncture, there is lack of mark on the sleeve, and the needle insertion depth is not easy to master, and the puncture is too shallow to be blocked by bone cortex, and the puncture is too deep to damage internal organs, which leads to puncture failure, so that it is necessary to puncture again, thereby causing pain to patients. SUMMARY

[0003] (1) technical problem to be solved

[0004] In order to solve the problem that the puncture depth of needle core cannot be accurately controlled in the process of bone marrow puncture, which leads to puncture failure, so that it is necessary to puncture again, thereby causing pain to patients, thereby increasing the time of puncture diagnosis, material taking and treatment.

[0005] (2) technical scheme

[0006] The technical scheme of the utility model discloses a blood department bone marrow puncture device, which comprises a puncture needle seat and a needle tube fixed at the bottom end of the puncture needle seat, a needle cylinder is inserted into the inside of the needle tube, a needle core is arranged in the inside of the needle cylinder, a limiting assembly is arranged in the inside of the puncture needle seat;

[0007] The limiting assembly comprises a limiting cylinder, a sliding block and a connecting cylinder, the top end of the needle cylinder is fixedly connected with the connecting cylinder, the outside of the needle cylinder is sleeved with the limiting cylinder, the side close to the limiting cylinder in the inside of the puncture needle seat is slidably connected with the sliding block, and the limiting cylinder and the sliding block are rotatably connected, the side close to the sliding block on the surface of the puncture needle seat is marked with a scale mark, the bottom end of the needle cylinder is provided with a spiral blade, and the bottom end of the needle tube is provided with a flat blade.

[0008] Preferably, when performing puncture surgery, the needle tube and the needle cylinder are inserted into the puncture part to be punctured by pushing the puncture needle seat, and the needle tube and the needle cylinder are flush with the bone surface, then the needle cylinder is driven to rotate to slowly drill into the bone, during this period, the bone surface will block the needle tube, the needle cylinder will push the limiting cylinder to move downward through the connecting cylinder, and then drive the limiting cylinder to move, the needle depth of the needle cylinder is equivalent to the moving distance of the limiting cylinder, the puncture depth of the needle core is accurately controlled, the success rate of puncture is improved, the time of puncture diagnosis, material taking and treatment is shortened, and repeated puncture is avoided.

[0009] Further, a plurality of sets of clamping teeth one are embedded on one side of the puncture needle seat close to the slider, clamping teeth two matched with the clamping teeth one are slidably connected in the slider, the side surface of the clamping teeth two is fixedly connected with trapezoidal blocks, springs one are fixedly connected between the trapezoidal blocks and the slider, the position of the slider is adjusted in advance, and the connecting barrel can be timely blocked when puncturing to a proper depth, so that the puncture needle is prevented from puncturing too deep.

[0010] Further, the inside of the slider is slidably connected with a pressing block, and symmetrical rolling wheels are fixedly connected on the surface of the pressing block close to the inclined surface of the trapezoidal block, so that the position of the slider can be adjusted through the pressing block, and the flexibility of the device is improved.

[0011] Further, symmetrical handle bars are fixedly connected on the two sides of the puncture needle seat, so that the position of the device can be adjusted, and the puncture needle of the device can be aligned with the puncture part.

[0012] Further, a hexagonal member is fixedly connected on the top end of the needle core, so that the needle core can be connected with the electric tool through the hexagonal member.

[0013] Further, an installation assembly is arranged in the puncture needle seat, the installation assembly comprises a limiting ring and a connecting block, the top end of the connecting barrel is rotatably connected with the limiting ring through a damping bearing, four groups of connecting blocks in annular array are fixedly connected on the outer wall surface of the needle core, an insertion slot is formed on the side of the limiting ring close to the connecting block, and an embedding slot is formed on the side of the connecting barrel close to the connecting block, so that the needle core can be quickly disassembled through the limiting of the limiting ring.

[0014] Further, a spring two is fixedly connected in the connecting barrel, and the top end of the spring two abuts against the connecting block, so that the needle core can be taken out from the needle barrel through the spring two.

[0015] (3) Beneficial effects

[0016] Compared with the prior art, the beneficial effects of the utility model lie in that:

[0017] Through the limiting assembly, the needle insertion depth of the needle barrel is equivalent to the moving distance of the limiting barrel when the puncture operation is performed, the puncture depth of the needle core is accurately controlled, the success rate of puncture is improved, the time for puncture diagnosis and material taking and treatment is shortened, repeated puncture is avoided, the position of the slider is adjusted in advance, the connecting barrel can be timely blocked when puncturing to a proper depth, so that the puncture needle is prevented from puncturing too deep, the accuracy of puncture is improved, the installation assembly is arranged, the limiting of the limiting ring on the needle core is adjusted, the needle core can be quickly disassembled, and the convenience of taking out the needle core from the needle barrel is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The overall structure schematic diagram of the utility model is shown.

[0019] Figure 2 The structure schematic view of the needle tube in the utility model is shown;

[0020] Figure 3 The structure schematic view of the needle cylinder in the utility model is shown;

[0021] Figure 4 The structure schematic view of the needle core in the utility model is shown;

[0022] Figure 5 The sectional view of the puncture needle seat in the utility model is shown;

[0023] Figure 6 The structure schematic view of the limiting cylinder and the sliding block in the utility model is shown;

[0024] Figure 7 The utility model Figure 6 provides an enlarged view of A.

[0025] Mark 1-puncture needle seat, 2-needle tube, 3-limiting component, 31-handle, 32-claw one, 33-limiting cylinder, 34-sliding block, 35-claw two, 36-roller, 37-pressing block, 38-trapezoidal block, 39-spring one, 310-connection cylinder, 4-mounting component, 41-limiting ring, 42-spring two, 43-connection block, 44-insertion slot, 45-putting slot, 5-needle cylinder, 6-needle core. Specific implementation

[0026] The utility model is further explained in connection with the drawings and examples.

[0027] Referring to Figures 1-7 , the utility model provides an example: a kind of hematology department bone marrow puncture device, including puncture needle seat 1 and the needle tube 2 of fixed in the bottom end of puncture needle seat 1, needle tube 2 is inserted with needle cylinder 5 in its inside, needle cylinder 5 is provided with needle core 6 in its inside, the inside of puncture needle seat 1 is provided with limiting component 3;

[0028] The limiting component 3 includes a limiting cylinder 33, a slider 34, and a connecting cylinder 310. The connecting cylinder 310 is fixedly connected to the top of the syringe 5, and the limiting cylinder 33 is sleeved on the outside of the syringe 5. The slider 34 is slidably connected to the inside of the puncture needle seat 1 near the limiting cylinder 33, and the limiting cylinder 33 and the slider 34 are rotatably connected. The surface of the puncture needle seat 1 is marked with a scale mark near the slider 34. The bottom end of the syringe 5 is provided with a spiral blade, and the bottom end of the needle tube 2 is provided with a flat blade. When the slider 34 moves to the top of the scale mark on the surface of the puncture needle seat 1, the connecting cylinder 310 is supported by the second locking tooth 35. At this time, the bottom end of the needle tube 2 is connected to the syringe. The bottom ends of the needle tubes 5 are flush with each other. During the puncture procedure, the needle tube 2 and the syringe 5 are inserted into the puncture site by pushing the puncture needle seat 1, and the needle tube 2 and the syringe 5 are flush with the bone surface. Then, the syringe 5 is driven to rotate so that the syringe 5 slowly drills into the bone. During this period, the bone surface will block the needle tube 2, and the syringe 5 will push the limiting cylinder 33 downward through the connecting cylinder 310, thereby driving the limiting cylinder 33 to move. The needle insertion depth of the syringe 5 is equivalently measured by the movement distance of the limiting cylinder 33, so as to accurately control the puncture depth of the needle core, improve the success rate of puncture, shorten the time of puncture diagnosis, sampling and treatment, and avoid multiple and repeated punctures.

[0029] Please see Figures 1-7 In this embodiment, several sets of locking teeth 32 are embedded inside the puncture needle holder 1 near the slider 34. Locking teeth 35, matching the locking teeth 32, are slidably connected inside the slider 34. A trapezoidal block 38 is fixedly connected to the side of the locking teeth 35. A spring 39 is fixedly connected between the trapezoidal block 38 and the slider 34. A pressure block 37 is slidably connected inside the slider 34. Rollers 36 are symmetrically fixedly connected to the surface of the pressure block 37 near the inclined surface of the trapezoidal block 38. Handles 31 are symmetrically fixedly connected to both sides of the puncture needle holder 1. A hexagonal handle is fixedly connected to the top of the needle core 6. The position of the slider 34 can be locked by the locking teeth 32 and 35. Before the puncture operation, the slider 34 is moved to a suitable position according to the predetermined puncture depth. And locked, when the puncture reaches the appropriate depth, the limiting cylinder 33 can block the connecting cylinder 310 in time, thereby avoiding the puncture needle from puncturing too deeply and improving the accuracy of puncture. By pressing the pressure block 37, the roller 36 can be pushed to move, and then the roller 36 will squeeze the inclined surface of the trapezoidal block 38 to drive the second locking tooth 35 to be stored in the slider 34, so that the first locking tooth 32 and the second locking tooth 35 are separated, releasing the limitation on the slider 34, and thus the position of the slider 34 can be adjusted, improving the flexibility of the device. The position of the device can be adjusted by the medical staff holding the handle 31, making it easy to align the puncture needle with the puncture part. Through the hexagonal handle at the top of the needle core 6, it is easy to connect the needle core 6 to the power tool. The power tool drives the needle core 6 to rotate for puncture operation.

[0030] And through the installation assembly 4 inside the puncture needle seat 1, the installation assembly 4 includes the limiting ring 41 and the connecting block 43, the top end of the connecting barrel 310 is rotatably connected with the limiting ring 41 through the damping bearing, the outer wall surface of the needle core 6 is fixedly connected with four groups of connecting blocks 43 in annular array, the inside of the limiting ring 41 is provided with an insertion slot 44 close to the side of the connecting block 43, the inside of the connecting barrel 310 is provided with an insertion slot 45 close to the side of the connecting block 43, the inside of the connecting barrel 310 is fixedly connected with spring two 42, the top end of the spring two 42 abuts against the connecting block 43, when the puncture device is used, the insertion slot 45 is aligned with the insertion slot 44 by rotating the limiting ring 41, then the connecting block 43 is aligned with the insertion slot 44 and is slid into the inside of the insertion slot 45 by moving the needle core 6, then the insertion slot 44 and the insertion slot 45 are misaligned by rotating the limiting ring 41, thereby the limiting ring 41 can limit the connecting block 43, the needle core 6 is quickly installed in the needle barrel 5, and the insertion slot 45 and the connecting block 43 are matched in size, the stability of the installation of the needle core 6 is ensured, after the puncture is completed, the insertion slot 45 is aligned with the insertion slot 44 by rotating the limiting ring 41, the connecting block 43 is slid out of the inside of the needle barrel 5 under the elastic force of the spring two 42, the convenience of the extraction of the needle core 6 from the inside of the needle barrel 5 is improved.

[0031] Through the above steps, when the puncture operation is performed, the needle insertion depth of the needle barrel 5 is equivalent to the moving distance of the limiting barrel 33, the puncture depth of the needle core is accurately controlled, the success rate of puncture is improved, the time of puncture diagnosis and treatment is shortened, repeated puncture is avoided, the position of the sliding block 34 is adjusted in advance, the connecting barrel 310 is blocked in time when the puncture reaches the appropriate depth, thereby the puncture needle is prevented from being inserted too deep, the accuracy of puncture is improved, the limiting of the limiting ring 41 to the needle core 6 is adjusted by rotating the limiting ring 41, the needle core 6 can be quickly disassembled and assembled, and the convenience of the extraction of the needle core 6 from the inside of the needle barrel 5 is improved.

[0032] The embodiments of the utility model are described in detail above combined with the drawings, but the utility model is not limited to the above-mentioned embodiments, various changes can be made within the knowledge range of the person skilled in the art without departing from the purpose of the utility model.

Claims

1. A hematological bone marrow puncture device, comprising a puncture needle seat (1) and a needle tube (2) fixed at the bottom end of the puncture needle seat (1), a needle cylinder (5) is inserted in the inside of the needle tube (2), and a needle core (6) is arranged in the inside of the needle cylinder (5), characterized in that: The inside of the puncture needle seat (1) is provided with a limiting assembly (3); The limiting assembly (3) comprises a limiting cylinder (33), a sliding block (34) and a connecting cylinder (310), the top end of the needle cylinder (5) is fixedly connected with the connecting cylinder (310), the outside of the needle cylinder (5) is sleeved with the limiting cylinder (33), the inside of the puncture needle seat (1) close to one side of the limiting cylinder (33) is slidably connected with the sliding block (34), and the limiting cylinder (33) and the sliding block (34) are rotationally connected, one side of the surface of the puncture needle seat (1) close to the sliding block (34) is marked with a scale mark, and the bottom end of the needle cylinder (5) is provided with a spiral blade, and the bottom end of the needle tube (2) is provided with a flat blade.

2. The hematological bone marrow puncture device according to claim 1, wherein: The inside of the puncture needle seat (1) close to the sliding block (34) is inlaid with a plurality of sets of clamping teeth (32), the inside of the sliding block (34) is slidably connected with clamping teeth (35) matched with the clamping teeth (32), the side surface of the clamping teeth (35) is fixedly connected with a trapezoidal block (38), and the trapezoidal block (38) and the sliding block (34) are fixedly connected with a spring (39).

3. The hematological bone marrow puncture device according to claim 2, wherein: The inside of the sliding block (34) is slidably connected with a pressing block (37), and the surface of the pressing block (37) close to the inclined surface of the trapezoidal block (38) is fixedly connected with a symmetrical roller (36).

4. The hematological bone marrow puncture device according to claim 1, wherein: Both sides of the puncture needle seat (1) are fixedly connected with a handle (31).

5. The hematological bone marrow puncture device according to claim 1, wherein: The top end of the needle core (6) is fixedly connected with a hexagonal member.

6. The hematological bone marrow aspiration device of claim 1, wherein: The inside of the puncture needle seat (1) is provided with a mounting assembly (4), the mounting assembly (4) comprises a limiting ring (41) and a connecting block (43), the top end of the connecting cylinder (310) is rotationally connected with the limiting ring (41) through a damping bearing, the outer wall surface of the needle core (6) is fixedly connected with four groups of connecting blocks (43) in annular array, the inside of the limiting ring (41) close to one side of the connecting block (43) is provided with an insertion slot (44), and the inside of the connecting cylinder (310) close to one side of the connecting block (43) is provided with an insertion slot (45).

7. The hematological bone marrow puncture device according to claim 6, wherein: The inside of the connecting cylinder (310) is fixedly connected with a spring (42), and the top end of the spring (42) abuts against the connecting block (43).

Images