Bone marrow infusion device and method of use thereof

Abstract

The present invention relates to the field of bone marrow infusion technology. Specifically, it relates to a bone marrow infusion device and a method for using the same. The device includes a bone drill, a needle tube seat is detachably provided on the bone drill, a puncture needle tube is provided on the needle tube seat, and a plurality of support legs extending forward are provided on the bone drill. A main limit plate is detachably provided at the front end of the support leg. The main limit plate is located in front of the needle tube seat and is provided with a rear puncture needle through hole for the puncture needle tube to pass through. A push button that can approach the needle tube seat is provided on the rear side of the main limit plate, and a front clamping plate that can be located between the needle tube seat and the main limit plate is provided on the push button. The method includes installing and removing the main limit plate. When performing puncture, it is convenient to control the puncture depth. The push button and the needle tube seat are fixed to the main limit plate using adhesive tape, and the main limit plate is fixed to the patient. During this process, the needle tube seat will not move forward under the action of the front clamping plate to avoid increasing the puncture depth.

Description

Technical Field

[0001] The present invention relates to the technical field of bone marrow infusion.

[0002] Specifically, it relates to a bone marrow infusion device and a method of using the same. Background Art

[0003] An existing bone marrow infusion device, such as a cannula suitable for intraosseous injection disclosed in Chinese patent CN219645837U, comprises a cannula body, the cannula body comprises a needle tube and an inner core, the inner core is arranged in the needle tube, and is used to block the needle tube hole of the needle tube, the inner core is detachably connected to the needle tube, and the inner core and the needle tube are non-rotatably connected to each other; an external connecting portion is also arranged on the cannula body, and the external connecting portion is used to be detachably connected to an external connecting piece; the external connecting piece is a handle or an electric drill; a piston is arranged at one end of the inner core away from the external connecting portion, the needle tube comprises a needle tube section and a first connecting section, and the inner core comprises an inner core section and a second connecting section.

[0004] The above technical solution has the following disadvantages: during the puncture operation, the needle tube is connected to a tool such as an electric drill, and the puncture depth is controlled by visual inspection and feel. At the same time, when the needle tube is fixed to the patient using tape, the needle tube is easily pressed, resulting in an increase in the puncture depth, which is inconvenient to operate. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings of the above-mentioned traditional technology and provide a bone marrow infusion device and a method of using the same to facilitate the control of the puncture depth.

[0006] The objective of the present invention is achieved through the following technical measures: a bone marrow infusion device, comprising a bone drill, a needle tube seat is detachably provided on the bone drill, a puncture needle tube is provided on the needle tube seat, a plurality of support legs extending forward are provided on the bone drill, a main limit plate is detachably provided on the front end of the support legs, the main limit plate is located in front of the needle tube seat and is provided with a rear puncture needle through hole for accommodating the puncture needle tube to pass through, a push button that can be close to the needle tube seat is provided on the rear side of the main limit plate, and a front clamping plate that can be located between the needle tube seat and the main limit plate is provided on the push button.

[0007] As an improvement: at least one supporting leg is provided with an elastic sheet, the outer side of the elastic sheet is connected to the supporting leg and extends in the direction of movement of the push button and on the side close to the push button, the main limiting plate is provided with a plurality of supporting leg slots that cooperate with the supporting legs, the side walls of the supporting leg slots are provided with positioning pins, and the elastic sheet is provided with positioning holes that can cooperate with the positioning pins.

[0008] As an improvement: the elastic sheet comprises a rear elastic sheet and a front elastic sheet, the rear elastic sheet is connected to the supporting leg, and the rear side of the front elastic sheet is connected to the rear elastic sheet.

[0009] As an improvement: the push button is provided with a push button limiting groove which can cooperate with the elastic sheet, and the push button limiting groove is arranged near the side wall of the needle tube seat and perpendicular to the movement direction of the push button.

[0010] As an improvement: the number of the supporting legs is at least four, and every two supporting legs form a group. An elastic sheet is provided on a side of one supporting leg in each group close to another supporting leg.

[0011] As an improvement: a push button guide groove is arranged on the rear side of the main limit plate.

[0012] As an improvement: a clamping slot is arranged on the side of the needle tube seat, and a rear clamping plate capable of matching with the clamping slot is arranged on the push button.

[0013] As an improvement: the bone drill is provided with a rear sleeve, a rear annular protrusion is provided on the outer side of the front end of the rear sleeve, an external thread is provided on the side of the rear annular protrusion, a plurality of positioning grooves are provided on the front side of the rear annular protrusion, and also includes a front sleeve, the support leg is located on the front side of the front sleeve, a front annular protrusion is provided on the rear end of the front sleeve, a plurality of positioning protrusions that can cooperate with the positioning grooves are provided on the rear side of the front annular protrusion, a threaded ring is sleeved on the front sleeve, an inner annular protrusion that can abut against the front side of the front annular protrusion is provided on the front front side of the threaded ring, and an inner thread that can cooperate with the rear annular protrusion is provided on the inner rear side of the threaded ring.

[0014] As an improvement: a gasket is arranged at the front side of the main limiting plate, and a front puncture needle through hole for accommodating the puncture needle tube to pass through is arranged on the gasket.

[0015] A method of using the bone marrow infusion device as described above.

[0016] When the main limit plate needs to be installed, first, install the needle tube seat on the bone drill, then place the push button in the gap between the support legs, and finally, install the main limit plate on the support legs;

[0017] When the main limit plate needs to be removed, first, push the push button to position the front clamping plate between the needle tube seat and the main limit plate, then detach the bone drill from the needle tube seat and detach the support leg from the main limit plate.

[0018] Due to the adoption of the above technical solution, compared with the prior art, the advantages of the present invention are: when puncturing, the bone drill drives the needle tube seat and the puncture needle tube to perform the puncture operation, and when the main limit plate contacts the patient, the puncture can be stopped, which is convenient for controlling the puncture depth. At the same time, there is no relative rotation between the main limit plate and the bone drill, which reduces the discomfort of the patient. Use adhesive tape to fix the push button and the needle tube seat on the main limit plate, and fix the main limit plate on the patient. During this process, the needle tube seat will not move forward under the action of the front clamping plate, avoiding increasing the puncture depth.

[0019] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Attached Figure 1 It is a schematic structural diagram of a bone marrow infusion device of the present invention.

[0021] Attached Figure 2 yes Figure 1 Schematic diagram of the enlarged structure of part A in the figure.

[0022] Attached Figure 3 yes Figure 1 Schematic diagram of the enlarged structure inside the local A in the middle.

[0023] Attached Figure 4 yes Figure 1 Schematic diagram of the three-dimensional structure with the two push buttons in the open state in the middle part A.

[0024] Attached Figure 5 yes Figure 3 Schematic diagram of the structure of section BB when the two push buttons are in the open state.

[0025] Attached Figure 6 yes Figure 5 Schematic diagram of the enlarged structure of local C in the middle.

[0026] Attached Figure 7 yes Figure 3 Schematic diagram of the structure of section DD when the two push buttons are in the open state.

[0027] Attached Figure 8 yes Figure 7 Schematic diagram of the enlarged structure of local E in the figure.

[0028] Attached Fig. 9 The present invention is a three-dimensional structural schematic diagram of a bone marrow infusion device in which two push buttons are in a closed state and a main limit plate is separated from a front sleeve.

[0029] Attached Fig.10 yes Figure 3 Structural diagram of section BB when the two push buttons are in the closed state.

[0030] Attached Fig.11 yes Fig.10 Schematic diagram of the enlarged structure of local F in the figure.

[0031] Attached Fig.12 yes Figure 3 Schematic diagram of the structure of section DD when the two push buttons are in the closed state.

[0032] Attached Fig.13 yes Fig.12 Schematic diagram of the enlarged structure of local G in the figure.

[0033] Attached Fig.14 It is a schematic structural diagram of a rear sleeve in a bone marrow infusion device of the present invention.

[0034] Attached Fig.15 The present invention is a schematic structural diagram of a front sleeve in a bone marrow infusion device.

[0035] Attached Fig.16 yes Fig.15 Schematic diagram of the enlarged structure of local H in the figure.

[0036] Attached Fig.17 The present invention is a structural schematic diagram of the combined state of a needle tube seat and a needle core seat in a bone marrow infusion device.

[0037] Attached Fig.18 The present invention is a schematic diagram of the structure of a turntable and a clamping arm in a bone marrow infusion device.

[0038] Attached Fig.19 It is a structural schematic diagram of a push button in a bone marrow infusion device of the present invention.

[0039] Attached Fig. 20 It is a structural schematic diagram of a main limiting plate in a bone marrow infusion device of the present invention.

[0040] Attached Fig.21 yes Fig. 20 Schematic diagram of the enlarged structure of part I in the figure.

[0041] In the figure: 1-bone drill; 2-rear sleeve; 3-front sleeve; 4-main limit plate; 5-puncture needle tube; 6-threaded ring; 7-support leg; 8-gasket; 9-push button; 10-rotating shaft; 11-turntable; 12-clamping arm; 13-needle tube seat; 14-needle core seat; 15-puncture needle core; 16-rear elastic sheet; 17-push button limit slot; 18-front elastic sheet; 19-positioning hole; 20-positioning pin; 21 - push button guide groove; 22- front clamping groove; 23- rear clamping groove; 24- rear annular protrusion; 25- positioning groove; 26- front annular protrusion; 27- positioning protrusion; 28- card slot; 29- shaft mounting hole; 30- rear clamping plate; 31- rear arc groove; 32- front clamping plate; 33- front arc groove; 34- support leg slot; 35- rear puncture needle through hole; 36- front puncture needle through hole; 37- inner annular protrusion. DETAILED DESCRIPTION

[0042] Example 1: Figures 1 to 21 As shown, a bone marrow infusion device includes a bone drill 1, on which a needle tube seat 13 is detachably provided, on which a puncture needle tube 5 is provided, on which a needle core seat 14 is provided, on which a puncture needle core 15 is provided, and how the needle core seat 14 and the puncture needle core 15 are connected to the needle tube seat 13 and the puncture needle tube 5 adopts the existing technology, which will not be repeated here.

[0043] like Figure 3 , Fig.17 and Fig.18As shown, the side of the needle tube seat 13 is provided with a plurality of front clamping grooves 22, and the front clamping grooves 22 are connected with the rear end of the needle tube seat 13. The side of the needle core seat 14 is provided with a plurality of rear clamping grooves 23, and the rear clamping grooves 23 are connected with the front and rear ends of the needle core seat 14. When the needle core seat 14 is connected with the needle tube seat 13, the rear clamping grooves 23 are aligned with the front clamping grooves 22. Preferably, the number of the front clamping grooves 22 and the rear clamping grooves 23 are both four. The bone drill 1 is provided with a motor, a rotating disk 11 is provided on the rotating shaft 10 of the motor, a rotating shaft mounting hole 29 is provided on the rotating disk 11, and preferably, the rotating shaft mounting hole 29 is in the shape of a regular hexagon, and four clamping arms 12 are provided on the front side of the rotating disk 11, and the cross-section of the clamping arms 12 is circular, and the cross-section of the rear clamping groove 23 and the front clamping groove 22 is in the shape of an arc, and the four clamping arms 12 cooperate with the four rear clamping grooves 23 and the front clamping grooves 22 to clamp the needle tube seat 13 and the needle core seat 14. Of course, how the needle tube seat 13 is connected to the bone drill 1 can also adopt the existing technology, which will not be repeated here. The bone drill 1 is provided with a plurality of support legs 7 extending forward, and a main limit plate 4 is detachably provided at the front end of the support leg 7. The main limit plate 4 is located in front of the needle tube seat 13 and is provided with a rear puncture needle through hole 35 for accommodating the puncture needle tube 5 to pass through. A push button 9 that can approach the needle tube seat 13 is provided on the rear side of the main limit plate 4, and a front clamping plate 32 that can be located between the needle tube seat 13 and the main limit plate 4 is provided on the push button 9.

[0044] Before puncture, when the main limiting plate 4 needs to be installed, first, the needle tube seat 13 is installed on the bone drill 1, then the push button 9 is placed in the gap between the support legs 7, and finally, the main limiting plate 4 is installed on the support legs 7.

[0045] During puncture, the bone drill 1 drives the needle tube seat 13 and the puncture needle tube 5 to perform the puncture operation. When the main limit plate 4 contacts the patient, the puncture can be stopped. In order to adapt to different puncture depths, puncture needle tubes 5 of different lengths can be selected to facilitate the control of the puncture depth. At the same time, there is no relative rotation between the main limit plate 4 and the bone drill 1, which reduces the patient's discomfort.

[0046] After puncture, when the main limit plate 4 needs to be removed, first, push the push button 9 to make the front clamping plate 32 located between the needle tube seat 13 and the main limit plate 4, the front side of the front clamping plate 32 contacts with the main limit plate 4, and the rear side of the front clamping plate 32 contacts with the needle tube seat 13, which is convenient for fixing the needle tube seat 13 and the puncture needle tube 5, and then, separate the bone drill 1 from the needle tube seat 13, and separate the support leg 7 from the main limit plate 4.

[0047] Finally, the push button 9 and the needle tube seat 13 are fixed to the main limit plate 4 and the main limit plate 4 is fixed to the patient using adhesive tape. During this process, the needle tube seat 13 will not move forward under the action of the front clamping plate 32 to avoid increasing the puncture depth. Then the needle core seat 14 and the puncture needle core 15 are removed to perform the infusion operation. How to use adhesive tape to fix the push button 9 and the needle tube seat 13 to the main limit plate 4 and fix the main limit plate 4 to the patient adopts the existing technology, which will not be repeated here.

[0048] At least one supporting leg 7 is provided with an elastic sheet, the outer side of the elastic sheet is connected to the supporting leg 7 and extends in the direction of movement of the push button 9 and on the side close to the push button 9, the main limiting plate 4 is provided with a plurality of supporting leg slots 34 that cooperate with the supporting leg 7, the side walls of the supporting leg slots 34 are provided with positioning pins 20, and the elastic sheet is provided with positioning holes 19 that can cooperate with the positioning pins 20.

[0049] Before puncture, when the main limit plate 4 needs to be installed, first, the needle tube seat 13 is installed on the bone drill 1, and then the push button 9 is placed in the gap between the support legs 7. At this time, the push button 9 does not push the elastic sheet. Finally, the main limit plate 4 is installed on the support leg 7, the positioning hole 19 cooperates with the positioning pin 20, and the main limit plate 4 is firmly connected to the support leg 7.

[0050] After puncture, when the main limit plate 4 needs to be removed, first, push the push button 9 to make the front clamping plate 32 located between the needle tube seat 13 and the main limit plate 4. At this time, the push button 9 pushes the elastic sheet, the elastic sheet approaches the supporting leg 7, the positioning hole 19 is disengaged from the positioning pin 20, and then, the bone drill 1 is disengaged from the needle tube seat 13, and the supporting leg 7 is disengaged from the main limit plate 4.

[0051] This structure realizes the disengagement of the front clamping plate 32 between the needle tube seat 13 and the main limiting plate 4 and between the positioning hole 19 and the positioning pin 20 by pushing the push button 9, which is convenient for operation.

[0052] In another embodiment, the support leg 7 and the support leg slot 34 may be matched with each other through friction force.

[0053] Specifically, the elastic sheet includes a rear elastic sheet 16 and a front elastic sheet 18 . The rear elastic sheet 16 is connected to the supporting leg 7 , and the rear side of the front elastic sheet 18 is connected to the rear elastic sheet 16 .

[0054] The rear elastic sheet 16 can be deflected along its outer edge to facilitate being pushed by the push button 9 and approaching the support leg 7. The front elastic sheet 18 can be deflected along its rear edge to facilitate entering and exiting the support leg slot 34 and cooperating with the positioning pin 20 for easy use.

[0055] Specifically, the push button 9 is provided with a push button limiting groove 17 that can cooperate with the elastic sheet, and the push button limiting groove 17 is arranged perpendicular to the movement direction of the push button 9 near the side wall of the needle tube seat 13. The push button limiting groove 17 is arranged obliquely away from the side wall of the needle tube seat 13.

[0056] Before puncture, when the main limit plate 4 needs to be installed, first, the needle tube seat 13 is installed on the bone drill 1, and then the push button 9 is placed in the gap between the support legs 7. At this time, the elastic sheet is located on the inner side of the push button limit groove 17, and the push button 9 does not push the elastic sheet. At the same time, the elastic sheet also plays a role in fixing the position of the push button 9. Finally, the main limit plate 4 is installed on the support leg 7, the positioning hole 19 cooperates with the positioning pin 20, and the main limit plate 4 is firmly connected to the support leg 7.

[0057] After puncture, when the main limit plate 4 needs to be removed, first, push the push button 9 to make the front clamping plate 32 located between the needle tube seat 13 and the main limit plate 4. At this time, the push button limit groove 17 pushes the elastic sheet away from the side wall of the needle tube seat 13, and the elastic sheet approaches the supporting leg 7. The positioning hole 19 is disengaged from the positioning pin 20. Then, the bone drill 1 is disengaged from the needle tube seat 13, and the supporting leg 7 is disengaged from the main limit plate 4.

[0058] Specifically, the number of the supporting legs 7 is at least four, and every two supporting legs 7 form a group. An elastic sheet is provided on a side of one supporting leg 7 close to another supporting leg 7 in each group.

[0059] In this structure, there are two push buttons 9, which are arranged opposite to each other. Before puncture, when the main limit plate 4 needs to be installed, the two push buttons 9 are in an open state. After puncture, when the main limit plate 4 needs to be removed, the two push buttons 9 are closed with the thumb and index finger, which is convenient for operation.

[0060] A push button guide groove 21 is arranged at the rear side of the main limiting plate 4 .

[0061] After puncture, when the main limit plate 4 needs to be removed, the push button 9 moves along the push button guide groove 21 to improve reliability.

[0062] like Fig.17 , Fig.19 As shown, a slot 28 is provided on the side of the needle tube seat 13, and a rear card plate 30 that can cooperate with the slot 28 is provided on the push button 9. Specifically, a rear arc groove 31 is provided on the rear card plate 30, and the rear arc groove 31 is used to cooperate with the needle tube seat 13, and a front arc groove 33 is provided on the front card plate 32, and the front arc groove 33 is used to avoid the puncture needle tube 5.

[0063] After puncture, when the main limit plate 4 needs to be removed, first, push the push button 9 to make the front clamping plate 32 located between the needle tube seat 13 and the main limit plate 4, the front side of the front clamping plate 32 contacts the main limit plate 4, the rear side of the front clamping plate 32 contacts the needle tube seat 13, and the front and rear sides of the rear clamping plate 30 contact the front and rear sides of the slot 28, so as to facilitate the fixation of the needle tube seat 13 and the puncture needle tube 5, and then, separate the bone drill 1 from the needle tube seat 13, and separate the support leg 7 from the main limit plate 4.

[0064] like Figure 3 , Fig.14 , Fig.15 As shown, the bone drill 1 is provided with a rear sleeve 2, a rear annular protrusion 24 is provided on the outer side of the front end of the rear sleeve 2, an external thread is provided on the side of the rear annular protrusion 24, and a plurality of positioning grooves 25 are provided on the front side of the rear annular protrusion 24. The front sleeve 3 is also provided with a front support leg 7, the front sleeve 3 is provided with a front annular protrusion 26 at the rear end, and a plurality of positioning protrusions 27 capable of matching with the positioning grooves 25 are provided on the rear side of the front annular protrusion 26. The front sleeve 3 is sleeved with a threaded ring 6, the front side of the threaded ring 6 is provided with an inner annular protrusion 37 capable of abutting against the front side of the front annular protrusion 26, and the rear side of the threaded ring 6 is provided with an inner thread capable of matching with the rear annular protrusion 24. Preferably, the number of the positioning grooves 25 and the number of the positioning protrusions 27 are both four.

[0065] In this structure, the orientation of the push button 9 can be changed by changing the installation angle of the front sleeve 3 to adapt to the operating habits of different operators.

[0066] The front side of the main limiting plate 4 is provided with a gasket 8, and the gasket 8 is provided with a front puncture needle through hole 36 for accommodating the puncture needle tube 5. Preferably, the gasket 8 is made of sponge, and when the main limiting plate 4 and the gasket 8 are in contact with the patient, the discomfort of the patient is reduced.

[0067] Example 2: A method for using the bone marrow infusion device as described in Example 1.

[0068] When the main limiting plate 4 needs to be installed, first, the needle tube seat 13 is installed on the bone drill 1, then the push button 9 is placed in the gap between the support legs 7, and finally, the main limiting plate 4 is installed on the support legs 7.

[0069] When the main limit plate 4 needs to be removed, first, push the push button 9 to position the front clamping plate 32 between the needle tube seat 13 and the main limit plate 4 , then detach the bone drill 1 from the needle tube seat 13 and detach the support leg 7 from the main limit plate 4 .

[0070] When puncturing, the bone drill 1 drives the needle tube seat 13 and the puncture needle tube 5 to perform the puncture operation. At this time, there is no relative rotation between the main limit plate 4 and the bone drill 1. When the main limit plate 4 contacts the patient, the patient's discomfort is reduced.

[0071] Finally, use adhesive tape to fix the push button 9 and the needle tube seat 13 on the main limit plate 4, and fix the main limit plate 4 on the patient. During this process, the needle tube seat 13 will not move forward under the action of the front clamping plate 32 to avoid increasing the puncture depth. Then remove the needle core seat 14 and the puncture needle core 15 to perform the infusion operation.

[0072] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should fall within the scope of the patent coverage of the present invention.

Claims

1. A bone marrow infusion device, comprising a bone drill (1), wherein a needle tube seat (13) is detachably provided on the bone drill (1), and a puncture needle tube (5) is provided on the needle tube seat (13), characterized in that: The bone drill (1) is provided with a plurality of support legs (7) extending forward, and a main limit plate (4) is detachably provided at the front end of the support leg (7), the main limit plate (4) being located in front of the needle tube seat (13) and provided with a rear puncture needle through hole (35) for accommodating the puncture needle tube (5) to pass through, and a push button (9) capable of approaching the needle tube seat (13) is provided at the rear side of the main limit plate (4), and a front clamping plate (32) capable of being located between the needle tube seat (13) and the main limit plate (4) is provided on the push button (9); At least one of the support legs (7) is provided with an elastic sheet, the outer side of the elastic sheet is connected to the support leg (7) and extends in the direction of movement of the push button (9) and on a side close to the push button (9), the main limit plate (4) is provided with a plurality of support leg slots (34) that match the support legs (7), the side walls of the support leg slots (34) are provided with positioning pins (20), and the elastic sheet is provided with positioning holes (19) that can match the positioning pins (20), so as to push the push button (9) and simultaneously realize the separation of the front clamping plate (32) between the needle tube seat (13) and the main limit plate (4) and between the positioning holes (19) and the positioning pins (20).

2. The bone marrow infusion device according to claim 1, characterized in that: The elastic sheet comprises a rear elastic sheet (16) and a front elastic sheet (18); the rear elastic sheet (16) is connected to the support leg (7); and the rear side of the front elastic sheet (18) is connected to the rear elastic sheet (16).

3. The bone marrow infusion device according to claim 1, characterized in that: The push button (9) is provided with a push button limiting groove (17) capable of cooperating with the elastic sheet, and the push button limiting groove (17) is arranged near the side wall of the needle tube seat (13) and perpendicular to the movement direction of the push button (9).

4. The bone marrow infusion device according to claim 1, characterized in that: The number of the supporting legs (7) is at least four, and every two supporting legs (7) form a group. An elastic sheet is provided on a side of one supporting leg (7) in each group close to another supporting leg (7).

5. The bone marrow infusion device according to any one of claims 1 to 4, characterized in that: A push button guide groove (21) is provided on the rear side of the main limiting plate (4).

6. The bone marrow infusion device according to any one of claims 1 to 4, characterized in that: A clamping slot (28) is provided on the side of the needle tube seat (13), and a rear clamping plate (30) capable of matching with the clamping slot (28) is provided on the push button (9).

7. The bone marrow infusion device according to any one of claims 1 to 4, characterized in that: The bone drill (1) is provided with a rear sleeve (2), a rear annular protrusion (24) is provided on the outer side of the front end of the rear sleeve (2), an external thread is provided on the side of the rear annular protrusion (24), and a plurality of positioning grooves (25) are provided on the front side of the rear annular protrusion (24). The bone drill (1) also includes a front sleeve (3), the support leg (7) is located on the front side of the front sleeve (3), a front annular protrusion (26) is provided on the rear end of the front sleeve (3), and a plurality of positioning protrusions (27) capable of cooperating with the positioning grooves (25) are provided on the rear side of the front annular protrusion (26), a threaded ring (6) is sleeved on the front sleeve (3), an inner annular protrusion (37) capable of abutting against the front side of the front annular protrusion (26) is provided on the inner front side of the threaded ring (6), and an inner thread capable of cooperating with the rear annular protrusion (24) is provided on the inner rear side of the threaded ring (6).

8. The bone marrow infusion device according to any one of claims 1 to 4, characterized in that: A gasket (8) is provided on the front side of the main limiting plate (4), and a front puncture needle through hole (36) for accommodating the puncture needle tube (5) to pass through is provided on the gasket (8).

9. A method for using the bone marrow infusion device as claimed in claim 1, characterized in that: When the main limit plate (4) needs to be installed, first, the needle tube seat (13) is installed on the bone drill (1), then the push button (9) is placed in the gap between the support legs (7), and finally, the main limit plate (4) is installed on the support legs (7); When the main limit plate (4) needs to be removed, first, the push button (9) is pushed to position the front clamping plate (32) between the needle tube seat (13) and the main limit plate (4), and then the bone drill (1) is separated from the needle tube seat (13) and the support leg (7) is separated from the main limit plate (4).

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