Bone marrow biopsy puncture sampling device

Abstract

The invention belongs to the technical field of bone marrow biopsy puncture, and relates to a bone marrow biopsy puncture sampling device. The device comprises a sampling needle, a limiting cylinder, a fixing assembly and an annular cylinder, a bearing block is fixedly mounted at the top end of the limiting cylinder; a limiting plate matched with the bearing block is arranged on a needle cylinder of the sampling needle; the lower end of the limiting cylinder is fixedly connected with a bottom plate, and the annular cylinder is fixedly connected with the bottom plate and surrounds the outer side of the limiting cylinder; a push ring is hermetically and slidably arranged between the annular cylinder and the limiting cylinder; the limiting cylinder, the push ring and the annular cylinder define a containing cavity for containing a disinfectant; a communicating cavity is formed in the limiting cylinder, a liquid outlet hole communicating the communicating cavity with the containing cavity is formed in the limiting cylinder, and a plurality of spraying holes communicating with the communicating cavity are formed in the inner wall of the limiting cylinder. In the folding process, a first hinge rod pushes a corresponding push rod, a push ring extrudes a disinfectant in a containing cavity, and the disinfectant enters a communicating cavity through a liquid outlet hole and then is sprayed into a limiting cylinder through a spraying hole to disinfect the interior of the limiting cylinder.

Description

Technical Field

[0001] The invention belongs to the technical field of bone marrow biopsy puncture and relates to a bone marrow biopsy puncture sampling device. Background Art

[0002] Bone marrow biopsy puncture is an important medical examination method, mainly used to diagnose blood system diseases, evaluate the state of the immune system, understand liver metabolism, etc. During the puncture operation, the common puncture needle and puncture needle cover are connected by threads. When removing the puncture needle from the puncture needle cover, you must first half-loosen the handle, and use the other hand to loosen the threaded connection to separate the puncture needle and the puncture needle cover. When operating with both hands, it is easy to shake and cause the puncture sampling position to change.

[0003] A bone marrow biopsy puncture sampling device is disclosed in the patent document with publication number CN116831639A. The device mainly includes a sampling needle and a sampling needle limiting cylinder. The surface of the sampling needle is detachably installed with a movable sleeve, and a buckle connecting arm is fixedly connected to one side of the movable sleeve. A buckle column is fixedly installed on the bottom surface of one side of the buckle connecting arm. The device uses an auxiliary fixed suction cup at the bottom end of the sampling needle limiting cylinder to sample the wound of the patient. The adjustment position of the telescopic threaded rod inside the contraction support rod can better fit the patient's body surface. The contraction support rods at different positions can be at different heights to better fit the patient's body, so that the sampling needle limiting cylinder can be better fixed. In actual use, the sampling needle limiting cylinder needs to be disinfected in time to avoid cross infection. However, there is a situation where it is inconvenient to disinfect the inside of the sampling needle limiting cylinder.

[0004] In order to solve the above problems, the present invention provides a bone marrow biopsy puncture sampling device. Summary of the invention

[0005] In order to solve the problems existing in the background technology, the present invention proposes a bone marrow biopsy puncture sampling device.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is as follows: a bone marrow biopsy puncture sampling device, including a sampling needle, a limiting cylinder, a fixing assembly and an annular cylinder; a bearing block is fixedly installed on the top of the limiting cylinder, and a limiting plate cooperating with the bearing block is arranged on the syringe of the sampling needle;

[0007] The lower end of the limiting cylinder is fixedly connected with a bottom plate, and the annular cylinder is fixedly connected with the bottom plate and surrounded by the outer side of the limiting cylinder; a push ring is provided between the annular cylinder and the limiting cylinder for sealing and sliding; the limiting cylinder, the push ring and the annular cylinder form a receiving chamber for containing disinfectant; a connecting chamber is provided on the limiting cylinder, a liquid outlet hole connecting the connecting chamber and the receiving chamber is provided on the limiting cylinder, and a plurality of spray holes connected with the connecting chamber are provided on the inner wall of the limiting cylinder;

[0008] The fixed component includes multiple telescopic parts hinged to the bottom plate, and the multiple telescopic parts are distributed according to the axial circumference of the limiting cylinder. A suction cup is rotatably arranged at the lower end of each telescopic part. The telescopic parts are linked with the push ring. When the telescopic parts are folded, the push ring moves, thereby squeezing the disinfectant in the accommodating cavity into the connecting cavity and spraying it into the limiting cylinder through the spray hole.

[0009] Furthermore, the telescopic member includes a first hinged rod and a second hinged rod, one end of the first hinged rod is hinged to the base plate through a first hinge axis, the other end of the first hinged rod is hinged to one end of the second hinged rod through a second hinge axis, and one end of the second hinged rod away from the first hinged rod is rotatably connected to the suction cup.

[0010] Furthermore, a plurality of push rods are fixedly connected to the lower end of the push ring, and the lower end of each push rod slides through the base plate and extends to the outside of the base plate; a first spring is sleeved on the push rod, and the first spring is fixedly connected between the base plate and the push ring; the plurality of push rods correspond one-to-one to the plurality of first hinged rods, and the push rods are cooperated with the corresponding first hinged rods, and when the first hinged rod rotates around the first hinge axis in a direction close to the base plate, the first hinged rod squeezes the push rod, thereby pushing the push ring to move upward.

[0011] Furthermore, the lower end of the limiting cylinder is connected to a needle cylinder, and the needle cylinder cooperates with the needle of the sampling needle.

[0012] Furthermore, a plurality of limiting components for limiting the syringe of the sampling needle are arranged in the limiting cylinder;

[0013] Each limiting assembly includes a fixed block, a sliding block and a limiting roller; the fixed block is fixed on the inner wall of the limiting cylinder, the fixed block is U-shaped, and sliding blocks are elastically slidably sleeved on both ends of the fixed block. The limiting roller is rotatably installed between the two sliding blocks, and the axis of the limiting roller is perpendicular to the axis of the limiting cylinder.

[0014] Furthermore, a limiting groove adapted to the limiting plate is provided on the bearing block.

[0015] Furthermore, a magnet is installed in the limiting groove, and an iron sheet cooperating with the magnet is fixedly connected to the limiting plate.

[0016] Compared with the prior art, the present invention has the following beneficial effects: when sampling, the limiting cylinder is fixed to the patient by the suction cup, and the position of the limiting cylinder can be adjusted by rotating the first hinge rod and the second hinge rod, so that the needle cylinder is directly opposite to the patient's skin, which is convenient for sampling.

[0017] After sampling, the fixed components can be folded for easy storage.

[0018] At the same time, during the folding process, the first hinged rod pushes the corresponding push rod, so that the push ring moves upward to squeeze the disinfectant in the accommodating cavity, so that the disinfectant enters the communicating cavity through the liquid outlet hole, and then sprays into the limiting cylinder through the spray hole to disinfect the inside of the limiting cylinder. The device is convenient for disinfecting the inside of the limiting cylinder and is not easy to be missed. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the external structure of the limiting cylinder in the present invention;

[0020] Figure 2 The present invention Figure 1 A magnified view of part A;

[0021] Figure 3 It is a schematic diagram of the structure of the sampling needle in the present invention;

[0022] Figure 4 It is a schematic diagram of the structure of the fixing assembly in the present invention;

[0023] Figure 5 It is a schematic diagram of the structure of the push ring in the present invention;

[0024] Figure 6 The present invention Figure 5 A magnified view of part B;

[0025] Figure 7 It is a schematic diagram of the structure of the communicating cavity in the present invention;

[0026] Figure 8 is a top view of the limiting cylinder in the present invention;

[0027] Fig. 9 This is a schematic diagram of the internal structure of the limit cylinder in the present invention.

[0028] Fig.10 It is a structural schematic diagram of the limiting component in the present invention.

[0029] In the figure: 1. limit cylinder; 2. bottom plate; 3. first hinge rod; 4. second hinge rod; 5. suction cup; 6. push rod; 7. first spring; 8. push ring; 9. annular cylinder; 10. liquid outlet; 11. spray hole; 12. fixed block; 13. sliding block; 14. second spring; 15. limit roller; 16. needle cylinder; 17. bearing block; 18. limit groove; 19. syringe; 20. needle; 21. limit plate; 22. push-pull handle; 23. piston rod; 24. connecting cavity. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] like Figure 1-Figure 10 As shown, the technical solution adopted by the present invention is as follows: a bone marrow biopsy puncture sampling device includes a limiting cylinder 1, a sampling needle, a fixing component and an annular cylinder 9.

[0032] The sampling needle includes a syringe 19, a needle 20 and a piston rod 23. The needle 20 is connected to the lower end of the syringe 19, a piston plate is provided in the syringe 19 for sealing and sliding, the piston rod 23 is fixedly connected to the piston plate, and the piston rod 23 passes through the upper end of the syringe 19 and is fixedly connected to the push-pull handle 22.

[0033] A bearing block 17 is fixedly mounted on the top of the limiting cylinder 1. There are two bearing blocks 17, which are symmetrically arranged on both sides of the limiting cylinder 1. A limiting plate 21 that cooperates with the bearing block 17 is installed on the syringe 19. There are two limiting plates 21, which correspond to the two bearing blocks 17 one by one. The bearing block 17 limits the corresponding limiting plate 21, thereby limiting the syringe 19.

[0034] The lower end of the stopper cylinder 1 is connected to a needle cylinder 16, which cooperates with a needle 20. The needle 20 passes through the stopper cylinder 1 and then extends into the needle cylinder 16, and then extends to the outside of the needle cylinder 16 and then pierces the patient's skin. The inner diameter of the needle cylinder 16 is larger than the outer diameter of the needle 20, so that the needle 20 can pass through the needle cylinder 16 smoothly.

[0035] The bearing block 17 is provided with a limiting groove 18 adapted to the limiting plate 21, so that when the bearing block 17 limits the limiting plate 21, the limiting plate 21 is inserted into the corresponding limiting groove 18. A magnet is fixedly installed in the limiting groove 18, and an iron sheet is fixedly connected to the limiting plate 21. When the limiting plate 21 is inserted into the corresponding limiting groove 18, the magnet absorbs the iron sheet, thereby fixing the syringe 19 with the limiting cylinder 1.

[0036] The lower end of the limiting cylinder 1 is fixedly connected to the bottom plate 2, and the annular cylinder 9 is fixedly connected to the bottom plate 2 and surrounds the outer side of the limiting cylinder 1. A push ring 8 is provided between the annular cylinder 9 and the limiting cylinder 1 for sealing and sliding. The limiting cylinder 1, the push ring 8 and the upper part of the annular cylinder 9 form a receiving chamber for containing the disinfectant. Figure 7As shown, a connecting cavity 24 is provided on the limiting cylinder 1. A liquid outlet 10 is provided on the limiting cylinder 1 to connect the containing cavity with the connecting cavity 24. A plurality of spray holes 11 are provided on the inner wall of the limiting cylinder 1, and the spray holes 11 are connected with the connecting cavity 24. The push ring 8 slides, and the disinfectant in the containing cavity is squeezed into the connecting cavity 24 and sprayed out through the spray holes 11, thereby disinfecting the interior of the limiting cylinder 1.

[0037] The annular cylinder 9 is provided with a liquid adding port, and a sealing plug is arranged in the liquid adding port. Disinfectant is added into the containing cavity through the liquid adding port.

[0038] The fixing assembly is used to fix the limiting cylinder 1 to the patient's skin. The fixing assembly includes a plurality of telescopic parts hinged to the base plate 2, and the plurality of telescopic parts are distributed in an array according to the axis circumference of the limiting cylinder 1, and a suction cup 5 is rotatably provided at the lower end of each telescopic part. Specifically, the telescopic part includes a first hinge rod 3 and a second hinge rod 4, one end of the first hinge rod 3 is hinged to the base plate 2 through a first hinge axis, and the other end of the first hinge rod 3 is hinged to one end of the second hinge rod 4 through a second hinge axis. The end of the second hinge rod 4 away from the first hinge rod 3 is rotatably connected to the suction cup 5. There is a certain rotation damping between the first hinge rod 3 and the base plate 2, between the first hinge rod 3 and the second hinge rod 4, and between the suction cup 5 and the second hinge rod 4, that is, a human hand is required to rotate the first hinge rod 3, the second hinge rod 4 and the suction cup 5, so as to prevent the first hinge rod 3, the second hinge rod 4 and the suction cup 5 from rotating accidentally, thereby stably fixing the limiting cylinder 1 on the patient.

[0039] The first hinged rod 3 and the push ring 8 are arranged in linkage. Specifically, the lower end of the push ring 8 is fixedly connected to a plurality of push rods 6, and the plurality of push rods 6 are evenly distributed along the circumference of the axis of the limiting tube 1. The lower end of the push rod 6 slides through the bottom plate 2 and extends to the bottom of the bottom plate 2. Each push rod 6 is sleeved with a first spring 7, and the first spring 7 is fixedly connected between the push ring 8 and the bottom plate 2. The plurality of push rods 6 correspond to the plurality of first hinged rods 3 one by one, and the push rods 6 cooperate with the corresponding first hinged rods 3. When the first hinged rod 3 rotates around the first hinge axis toward the direction close to the bottom plate 2, the first hinged rod 3 gradually approaches the bottom plate 2 and squeezes the corresponding push rod 6, thereby moving the push ring 8 upward, and the push ring 8 squeezes the disinfectant in the accommodating chamber, so that the disinfectant enters the connecting chamber 24 through the liquid outlet 10, and is sprayed into the limiting tube 1 through the spray hole 11.

[0040] A plurality of limiting components for limiting the position of the syringe 19 are arranged in the limiting cylinder 1. In this embodiment, the plurality of limiting components are distributed in groups, and the plurality of groups of limiting components are distributed in a circular array according to the axis of the limiting cylinder 1. Each group of limiting components includes a plurality of limiting components. The plurality of limiting components in the same group are distributed along the axis of the limiting cylinder 1.

[0041] Each limiting assembly includes a fixed block 12, a sliding block 13 and a limiting roller 15. The fixed block 12 is fixed on the inner wall of the limiting cylinder 1, and the fixed block 12 is U-shaped. The sliding blocks 13 are elastically slidably sleeved on both ends of the fixed block 12. Specifically, a sliding groove is provided on the sliding block 13, and the sliding block 13 is slidably sleeved on the fixed block 12 through the sliding groove. A second spring 14 is provided in the sliding groove, and the second spring 14 is fixedly connected between the fixed block 12 and the sliding block 13. The limiting roller 15 is rotatably installed between the two sliding blocks 13. The axis of the limiting roller 15 is perpendicular to the axis of the limiting cylinder 1.

[0042] Working principle:

[0043] Initially, the fixing assembly is in a folded state. The first hinge rod 3 and the second hinge rod 4 are folded together, and under the pressure of the first hinge rod 3, the push rod 6 is retracted into the annular cylinder 9, and the first spring 7 is in a stretched state.

[0044] When in use, the first hinge rod 3 rotates around the first hinge axis, and the second hinge rod 4 rotates around the second hinge axis, thereby expanding the fixing assembly. After the first hinge rod 3 loses its compression, the push rod 6 moves downward under the action of the first spring 7 and extends to the bottom of the bottom plate 2. Then, disinfectant is added into the accommodating chamber.

[0045] The puncture position is determined, and then the suction cup 5 is sucked onto the patient's skin, and the needle barrel 16 is matched with the position where puncture is required. Then the first hinge rod 3 and the second hinge rod 4 are adjusted according to the slope of the patient's body, so that the needle barrel 16 is perpendicular to the position where puncture is required, and there is a suitable distance between the needle barrel 16 and the skin for puncture. In this process, the rotation angle of the first hinge rod 3 must be controlled to prevent the first hinge rod 3 from squeezing the push rod 6.

[0046] Then put the puncture needle into the limiting tube 1, so that the limiting plate 21 is opposite to the corresponding limiting groove 18. Under the action of multiple limiting components, the axis of the syringe 19 and the axis of the limiting tube 1 are on the same straight line, so that the needle 20 is opposite to the syringe barrel 16. The limiting roller 15 rolls along the syringe 19, which helps to reduce the friction between the limiting roller 15 and the syringe 19, so that the syringe 19 moves downward smoothly. Until the limiting plate 21 moves into the corresponding limiting groove 18, and under the adsorption action of the magnet and the iron sheet, the limiting plate 21 is fixedly connected to the supporting block 17. At this time, the needle 20 passes through the syringe barrel 16 and pierces into the patient's skin. Then pull the push-pull handle 22 to take samples.

[0047] After the sampling is finished, the syringe 19 is taken out from the limiting cylinder 1, and then the suction cup 5 is taken off the patient. The first hinge rod 3 and the second hinge rod 4 are rotated to fold the fixing assembly for storage.

[0048] During the rotation of the first hinge rod 3, when the first hinge rod 3 contacts the push rod 6, the first hinge rod 3 squeezes the push rod 6, and the push rod 6 moves upward against the elastic force of the first spring 7, and the push ring 8 moves upward, and the disinfectant in the accommodating chamber is squeezed into the connecting chamber 24 and sprayed into the limiting cylinder 1 through the spray hole 11, thereby disinfecting the interior of the limiting cylinder 1. During the folding of the limiting assembly of the device, the interior of the limiting cylinder 1 can be disinfected, which is simple and convenient, and prevents medical staff from forgetting to disinfect the interior of the limiting cylinder 1.

[0049] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A bone marrow biopsy puncture sampling device, comprising a sampling needle, characterized in that: It also includes a limiting cylinder (1), a fixing assembly and an annular cylinder (9); a bearing block (17) is fixedly mounted on the top of the limiting cylinder (1), and a limiting plate (21) cooperating with the bearing block (17) is arranged on the syringe (19) of the sampling needle; The lower end of the limiting cylinder (1) is fixedly connected to a bottom plate (2), and the annular cylinder (9) is fixedly connected to the bottom plate (2) and surrounds the outer side of the limiting cylinder (1); a push ring (8) is provided between the annular cylinder (9) and the limiting cylinder (1) in a sealing and sliding manner; the limiting cylinder (1), the push ring (8) and the annular cylinder (9) enclose a receiving chamber for containing disinfectant; a connecting chamber (24) is provided on the limiting cylinder (1), a liquid outlet hole (10) connecting the connecting chamber (24) and the receiving chamber is provided on the limiting cylinder (1), and a plurality of spray holes (11) connected to the connecting chamber (24) are provided on the inner wall of the limiting cylinder (1); The fixing assembly comprises a plurality of telescopic parts hinged to the bottom plate (2), the plurality of telescopic parts being distributed according to the circumference of the axis of the limiting cylinder (1), and a suction cup (5) being rotatably arranged at the lower end of each telescopic part; the telescopic parts are linked to the push ring (8), and when the telescopic parts are folded, the push ring (8) moves, thereby squeezing the disinfectant in the accommodating cavity into the connecting cavity (24) and spraying the disinfectant into the limiting cylinder (1) through the spray hole (11).

2. A bone marrow biopsy puncture sampling device according to claim 1, characterized in that: The telescopic member comprises a first hinge rod (3) and a second hinge rod (4); one end of the first hinge rod (3) is hinged to the base plate (2) via a first hinge shaft; the other end of the first hinge rod (3) is hinged to one end of the second hinge rod (4) via a second hinge shaft; and one end of the second hinge rod (4) away from the first hinge rod (3) is rotatably connected to the suction cup (5).

3. A bone marrow biopsy puncture sampling device according to claim 2, characterized in that: The lower end of the push ring (8) is fixedly connected to a plurality of push rods (6), and the lower end of each push rod (6) slides through the bottom plate (2) and extends outside the bottom plate (2); a first spring (7) is sleeved on the push rod (6), and the first spring (7) is fixedly connected between the bottom plate (2) and the push ring (8); the plurality of push rods (6) correspond to the plurality of first hinge rods (3) one by one, and the push rods (6) are matched with the corresponding first hinge rods (3). When the first hinge rod (3) rotates around the first hinge axis in a direction close to the bottom plate (2), the first hinge rod (3) squeezes the push rod (6), thereby pushing the push ring (8) to move upward.

4. A bone marrow biopsy puncture sampling device according to claim 1, characterized in that: The lower end of the limiting cylinder (1) is connected to a needle cylinder (16), and the needle cylinder (16) cooperates with the needle (20) of the sampling needle.

5. A bone marrow biopsy puncture sampling device according to claim 1, characterized in that: A plurality of limiting components for limiting the position of the syringe (19) of the sampling needle are arranged in the limiting cylinder (1); Each limiting assembly comprises a fixed block (12), a sliding block (13) and a limiting roller (15); the fixed block (12) is fixed on the inner wall of the limiting cylinder (1); the fixed block (12) is U-shaped; both ends of the fixed block (12) are elastically slidably sleeved with sliding blocks (13); the limiting roller (15) is rotatably mounted between the two sliding blocks (13); and the axis of the limiting roller (15) is perpendicular to the axis of the limiting cylinder (1).

6. A bone marrow biopsy puncture sampling device according to claim 1, characterized in that: The bearing block (17) is provided with a limiting groove (18) adapted to the limiting plate (21).

7. A bone marrow biopsy puncture sampling device according to claim 6, characterized in that: A magnet is installed in the limiting groove (18), and an iron sheet matching the magnet is fixedly connected to the limiting plate (21).

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