Auxiliary bone marrow puncture device

Abstract

The invention discloses an auxiliary bone marrow puncture device which comprises a horizontal sliding rail, the horizontal sliding rail is slidably connected with a horizontal sliding sleeve, the horizontal sliding rail is provided with a horizontal driving motor, the upper end of the horizontal sliding sleeve is provided with a first universal connector, the upper end of the first universal connector is connected with a connecting arm, and the free end of the connecting arm is provided with a second universal connector. The second universal connector is connected with a mounting sleeve on one side of the connecting arm; a limiting sliding sleeve is outwards arranged at the free end of the mounting sleeve, a power motor is mounted in the mounting sleeve, a piston which cannot rotate relative to the limiting sliding sleeve is slidably connected in the limiting sliding sleeve, a power output shaft of the power motor is connected with a threaded driving shaft which is in threaded connection with the piston, and the free end of the limiting sliding sleeve is movably connected with a connector; the connector is provided with a connecting sleeve head in the direction away from the limiting sliding sleeve, and the free end of the connecting sleeve head is inwards provided with a sleeve hole. The puncture needle can be assisted in stable puncture, the drilling depth can be accurately controlled, and the operation efficiency and stability are effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical auxiliary instruments, and in particular to an auxiliary bone marrow puncture device. Background Art

[0002] In the medical field, bone marrow puncture is an important means for diagnosing and treating a variety of blood diseases, tumors, and certain infectious diseases. Therefore, hematology departments often use bone marrow puncture to diagnose diseases. Bone marrow puncture mainly uses a puncture needle to extract a small amount of bone marrow fluid from the posterior superior iliac spine, anterior superior iliac spine, or sternum for laboratory analysis to achieve the purpose of confirming the disease. This technology is crucial to clinical medicine, but its operational complexity and potential risks pose considerable challenges to doctors.

[0003] Initially, when performing bone marrow puncture, doctors relied on manual force to push the puncture needle directly into the bone. This method not only requires the operator to have considerable experience and skills, but also is often time-consuming and laborious because it requires a large force to penetrate the hard bone layer, and increases the pain and discomfort of the patient. In addition, the manual force method makes it difficult to ensure the consistency of the puncture needle entry angle, which may lead to sample collection failure or complications.

[0004] In order to solve these problems, a method was later developed to use an electric drill to assist in driving the puncture needle to rotate and drill into the bone. Compared with traditional manual operation, this method significantly reduces the operator's physical exertion and also improves the success rate of puncture. However, the operation of a handheld electric drill still has certain limitations. First, due to the instability of hand movements, it is difficult to accurately control the insertion direction and speed of the puncture needle; secondly, in actual operation, it is difficult for the operating medical staff to accurately judge the drilling depth, because too deep may damage the surrounding tissue structure, and too shallow may not be able to obtain enough bone marrow samples. Summary of the invention

[0005] The purpose of the present invention is to provide an auxiliary bone marrow puncture device, which assists in drilling the puncture needle into the bone during the bone marrow puncture process. The operation process is stable and the drilling depth can be accurately controlled, which can effectively improve the efficiency and stability of the operation.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions: an auxiliary bone marrow puncture device, comprising a horizontal slide rail, the horizontal slide rail is slidably connected with a horizontal slide sleeve, the horizontal slide rail is installed with a horizontal drive motor for driving the horizontal slide sleeve to slide, the upper end of the horizontal slide sleeve is provided with a first universal connector, the upper end of the first universal connector is connected with a connecting arm, one end of the connecting arm is provided with a first ball head universally connected to the first universal connector, the free end of the connecting arm is provided with a second universal connector, one side of the second universal connector is connected with a mounting sleeve, and one end of the mounting sleeve is provided with a second ball head universally connected to the second universal connector;

[0007] A limiting sleeve is provided outwardly at the free end of the mounting sleeve, a power motor is installed in the mounting sleeve, a piston which cannot rotate relative to the limiting sleeve is slidably connected therein, a threaded driving shaft is connected to the power output shaft of the power motor, the piston is provided with a threaded driving hole threadedly connected to the threaded driving shaft, a connecting head is movably connected to the free end of the limiting sleeve, a connecting pipe which is rotatably connected to the piston and covers the threaded driving shaft is provided inwardly at the connecting head, a non-circular limiting sliding hole is provided inwardly at the free end of the threaded driving shaft, a transmission shaft slidably connected to the limiting sliding hole is provided inwardly at the connecting head, a connecting sleeve head is provided inwardly at the connecting head away from the limiting sliding sleeve, and a sleeve hole is provided inwardly at the free end of the connecting sleeve head.

[0008] By adopting the above technical solution, when performing bone marrow puncture, firstly, the head end of the puncture kit is inserted into the sleeve hole of the connecting sleeve, and the clamping threaded knob is turned to squeeze the elastic clip to close inward to clamp the head end. The medical staff holds the connecting head to adjust the position, and the first ball head is connected to the first universal connector, and the second ball head is connected to the second universal connector, so that the connecting head can follow the movement of the human hand, so as to realize the rapid adjustment of the puncture needle position;

[0009] After adjusting the position, start the power motor, which drives the threaded drive shaft to rotate. During the rotation of the threaded drive shaft, the connection with the transmission shaft drives the connecting head to rotate, thereby driving the puncture needle to rotate. The rotation of the threaded drive shaft drives the piston to slide outward, and the connection between the piston and the connecting tube pushes the connecting head gradually outward, so that the puncture needle is continuously pushed outward during the rotation process. After pushing outward to a quantitative position, the power motor stops working, so that the puncture needle is accurately inserted into the bone, and then the clamping thread knob is rotated in the opposite direction to loosen the head end of the puncture kit, so that the inner needle of the puncture kit can be taken out and the bone marrow can be aspirated with a syringe.

[0010] The present invention is further configured as follows: a horizontal slide groove is opened inwardly on one side of the horizontal slide rail, a horizontal threaded shaft is rotatably connected in the horizontal slide groove, a power output shaft of the horizontal drive motor is connected to one end of the horizontal threaded shaft, and the horizontal slide sleeve extends into the horizontal slide groove and is connected to a horizontal threaded sleeve threadedly connected to the horizontal threaded shaft.

[0011] The present invention is further configured as follows: a first ball head collar slidably connected to a first ball head is disposed at an upper end of the first universal connector, a second ball head collar slidably connected to a second ball head is disposed on a side of the second universal connector facing the mounting sleeve, and longitudinal slide rails and transverse slide rails perpendicular to each other are disposed in the first universal connector and the second universal connector, and each longitudinal slide rail and each transverse slide rail are located on a side facing the first ball head collar or the second ball head collar;

[0012] Each transverse slide rail is provided with a longitudinal slider which is slidably connected to the corresponding longitudinal slide rail, each longitudinal slide rail is equipped with a longitudinal motor for driving the corresponding longitudinal slider to slide, each transverse slide rail is slidably connected to the transverse slider, each transverse slide rail is equipped with a transverse motor for driving the corresponding transverse slider to slide, and the free end of each transverse motor is provided with a driving ball head sleeve, the first ball head and the second ball head are both provided with connecting sliding holes inwardly, each driving ball head sleeve is slidably connected with a driving ball head, and each driving ball head is provided with a connecting sliding shaft which is slidably connected to the corresponding connecting sliding hole outwardly.

[0013] The present invention is further configured as follows: an induction ring is arranged outwardly on the outer circumference of the connecting tube, support rings are arranged on both sides of the limiting sleeve of the induction ring, a plurality of circumferentially distributed pressure-sensitive sensors are arranged between each support ring and the induction ring, and there is a gap in the connection between the connecting tube and the piston, so that the support ring can apply pressure to any pressure-sensitive sensor.

[0014] The present invention is further configured as follows: the longitudinal slide rail is provided with a longitudinal slide groove which is arranged along its length direction and is slidably connected to the longitudinal slider, a longitudinal threaded shaft is rotatably connected in the longitudinal slide groove, a power output shaft of the longitudinal motor is connected to one end of the longitudinal threaded shaft, the longitudinal slider is provided with a longitudinal threaded hole which is threadedly connected to the longitudinal threaded shaft, the transverse slide rail is provided with a transverse slide groove which is arranged along its length direction and is slidably connected to the transverse slider, a transverse threaded shaft is rotatably connected in the transverse slide groove, a power output shaft of the transverse motor is connected to one end of the transverse threaded shaft, and the transverse slider is provided with a transverse threaded hole which is threadedly connected to the transverse threaded shaft.

[0015] The present invention is further configured as follows: both ends of the transverse slide rail are provided with connecting sleeves arranged along the length direction of the longitudinal slide rail, and the first universal connector or the second universal connector is provided with a limiting sliding shaft slidably connected to the corresponding connecting sleeve.

[0016] The present invention is further configured as follows: the inner wall of the limiting sliding sleeve is provided with a plurality of limiting sliding strips arranged along its length direction, and the outer circumference of the piston is provided with a plurality of limiting sliding grooves which are slidably connected with the limiting sliding strips in a one-to-one correspondence.

[0017] The present invention is further configured as follows: a position-limiting rotating ring with an L-shaped cross section is provided at the outward end of the piston, and a rotating connecting ring matching with the position-limiting rotating ring is provided inwardly at the free edge of the connecting pipe.

[0018] The present invention is further configured as follows: an outer wall of the connecting sleeve is provided with an external thread, the external thread of the connecting sleeve is connected to a clamping threaded knob, and the connecting sleeve is cut and divided into a plurality of elastic clips inclined outward.

[0019] The present invention is further configured as follows: an elastic gasket is arranged on the inner side of each elastic clip.

[0020] In summary, the present invention has the following beneficial effects:

[0021] First, the present invention assists the puncture needle in drilling into the bone during bone marrow puncture. Through the ingenious structural design, the power motor can drive the puncture needle to rotate and push the puncture needle forward continuously. The puncture depth can be accurately achieved through the setting each time. The operation process does not require manual support. The puncture process is more stable and the puncture needle insertion process can be completed quickly, effectively improving the efficiency and stability of the operation.

[0022] Secondly, the present invention can automatically control the rotation direction of the ball head through the internal structure design of the universal connector, and can automatically identify the hand movement intention with the induction of multiple pressure-sensitive sensors, so that the connecting arm and the mounting sleeve can follow the movement of the human hand. After being connected to the device, the position of the connecting arm and the mounting sleeve can be easily adjusted through power assistance, so as to realize rapid adjustment of the puncture needle position. After the adjustment is completed, the position of each joint can be self-locked to realize rotational puncture in a stable and motionless state. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is used to show the internal structure of the horizontal slide;

[0025] Figure 3 is a partial cross-sectional view for showing the internal structure of the first universal connector;

[0026] Figure 4 Used to demonstrate the connection between the horizontal slide rail and the longitudinal slide rail;

[0027] Figure 5 It is mainly used to show the connecting sliding hole opened by the first ball head;

[0028] Figure 6 It is a partial cross-sectional view used to show the internal structure of the installation sleeve and the limit sleeve;

[0029] Figure 7 It is a partial cross-sectional view mainly used to show the inner wall structure of the limit sleeve;

[0030] Figure 8 Mainly used to demonstrate the connection between the connecting sleeve and the clamping thread knob.

[0031] In the figure: 1. horizontal slide rail; 11. mounting plate; 12. horizontal sleeve; 13. horizontal drive motor; 14. horizontal slide groove; 15. horizontal threaded shaft; 16. horizontal threaded sleeve; 17. first universal connector; 18. first ball head collar; 2. connecting arm; 21. first ball head; 22. second universal connector; 23. first ball head collar; 3. mounting sleeve; 31. second ball head; 32. limit sleeve; 33. limit slide bar; 34. support ring; 41. longitudinal slide rail; 42. transverse slide rail; 43. longitudinal slider; 44. longitudinal slide groove; 45. longitudinal threaded shaft; 46. longitudinal motor; 47. transverse slider ;48. Horizontal slide groove;49. Horizontal threaded shaft;410. Horizontal motor;411. Connecting sleeve;412. Limiting slide shaft;5. Driving ball head sleeve;51. Connecting slide hole;52. Driving ball head;53. Connecting slide shaft;6. Piston;61. Limiting slide groove;62. Threaded drive hole;63. Limiting rotating ring;7. Power motor;71. Threaded drive shaft;72. Limiting slide hole;8. Connecting head;81. Connecting pipe;82. Rotating connecting ring;83. Induction ring;84. Pressure sensitive sensor;85. Transmission shaft;86. Connecting sleeve;87. Elastic clip;88. Elastic gasket;9. Clamping threaded knob. DETAILED DESCRIPTION

[0032] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0033] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by terms such as “upper”, “lower”, “left”, “right”, “front”, “back”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0034] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0035] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "disposed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] Example, see Figure 1-8 , an auxiliary bone marrow puncture device, including a horizontal slide rail 1, a mounting plate 11 is arranged on one side of the horizontal slide rail 1, which is used to install it on one side of an operating bed, the horizontal slide rail 1 is slidably connected to a horizontal sleeve 12 arranged along its length direction, and a horizontal driving motor 13 for driving the horizontal sleeve 12 to slide is installed at one end of the horizontal slide rail 1, a horizontal slide groove 14 is opened inwardly on the lower side of the horizontal slide rail 1, a horizontal threaded shaft 15 is rotatably connected in the horizontal slide groove 14, a power output shaft of the horizontal driving motor 13 is connected to one end of the horizontal threaded shaft 15, and the horizontal sleeve 12 extends into the horizontal slide groove 14 and is connected to a horizontal threaded sleeve 16 threadedly connected to the horizontal threaded shaft 15.

[0037] A first universal connector 17 is provided at the upper end of the horizontal sleeve 12, a connecting arm 2 is connected to the upper end of the first universal connector 17, a first ball head collar 18 is provided at the upper end of the first universal connector 17, and a first ball head 21 slidably connected to the first ball head collar 18 is provided at one end of the connecting arm 2 close to the first universal connector 17, so that the connecting arm 2 can rotate arbitrarily relative to the horizontal sleeve 12. A second universal connector 22 is provided at the free end of the connecting arm 2, and a mounting sleeve 3 is connected to the second universal connector 22 on one side of the connecting arm 2, and a first ball head collar 18 is provided at the second universal connector 22 facing the mounting sleeve 3, and a second ball head 31 slidably connected to the second ball head collar 23 is provided at one end of the mounting sleeve 3 close to the second universal connector 22, so that the mounting sleeve 3 can rotate arbitrarily relative to the connecting arm 2.

[0038] A longitudinal slide rail 41 and a transverse slide rail 42 perpendicular to each other are provided in the first universal connector 17 and the second universal connector 22. Each longitudinal slide rail 41 and each transverse slide rail 42 are located on the side facing the first ball head collar 18 or the second ball head collar 23. A longitudinal slider 43 slidably connected to the corresponding longitudinal slide rail 41 is provided at the bottom of each transverse slide rail 42. The longitudinal slide rail 41 is provided with a longitudinal slide groove 44 arranged along its length direction and slidably connected to the longitudinal slider 43. A longitudinal threaded shaft 45 is rotatably connected in the longitudinal slide groove 44. A longitudinal motor 46 for driving the corresponding longitudinal slider 43 to slide is installed at one end of each longitudinal slide rail 41. The power output shaft of the longitudinal motor 46 is connected to one end of the longitudinal threaded shaft 45. The longitudinal slider 43 is provided with a longitudinal threaded hole (not shown) threadedly connected to the longitudinal threaded shaft 45.

[0039] Each transverse slide rail 42 is slidably connected to a transverse slider 47. The transverse slide rail 42 is provided with a transverse slide groove 48 arranged along its length direction and slidably connected to the transverse slider 47. A transverse threaded shaft 49 is rotatably connected in the transverse slide groove 48. A transverse motor 410 for driving the corresponding transverse slider 47 to slide is installed at one end of each transverse slide rail 42. The power output shaft of the transverse motor 410 is connected to one end of the transverse threaded shaft 49. The transverse slider 47 is provided with a transverse threaded hole (not shown) threadedly connected to the transverse threaded shaft 49. Both ends of the transverse slide rail 42 are provided with a connecting sleeve 411 arranged along the length direction of the longitudinal slide rail 41. A limiting slide shaft 412 slidably connected to the corresponding connecting sleeve 411 is provided in the first universal connector 17 or the second universal connector 22.

[0040] A driving ball head sleeve 5 is provided at the free end of each transverse motor 410. A connecting sliding hole 51 is provided inwardly of the first ball head 21 and the second ball head 31. A driving ball head 52 is slidably connected in each driving ball head sleeve 5. A connecting sliding shaft 53 is provided outwardly of each driving ball head 52, which is slidably connected to the corresponding connecting sliding hole 51. Through the cooperation of the longitudinal slide rail 41 and the transverse slide rail 42, the driving ball head sleeve 5 drives the driving ball head 52 to move arbitrarily in the plane, and then through the sliding connection of the connecting sliding shaft 53 with the first ball head 21 or the second ball head 31, the first ball head 21 or the second ball head 31 can be driven to rotate, thereby realizing the function of driving automatic steering.

[0041] A limiting sleeve 32 is arranged outwardly from the free end of the mounting sleeve 3, a power motor 7 is installed in the mounting sleeve 3, a piston 6 is slidably connected in the limiting sleeve 32, the inner wall of the limiting sleeve 32 is provided with four limiting slide bars 33 arranged along its length direction, the outer periphery of the piston 6 is provided with four limiting slide grooves 61 which are slidably connected with the limiting slide bars 33 in a one-to-one correspondence, so that the piston 6 cannot rotate relative to the limiting sleeve 32, a threaded drive shaft 71 is connected to the power output shaft of the power motor 7 toward the piston 6, and the piston 6 is provided with a threaded drive hole 62 which is threadedly connected with the threaded drive shaft 71.

[0042] The free end of the limiting sliding sleeve 32 is movably connected to a connecting head 8, and a connecting tube 81 rotatably connected to the piston 6 is arranged inwardly of the connecting head 8. The connecting tube 81 is covered with a threaded driving shaft 71, and a circle of limiting rotating ring 63 with an L-shaped cross-section is arranged at the outward end of the piston 6. The free edge of the connecting tube 81 is arranged inwardly with a circle of rotating connecting ring 82 that cooperates with the limiting rotating ring 63, so that the connecting tube 81 drives the connecting head 8 to slide with the extension and contraction of the piston 6. A circle of induction ring 83 is arranged outwardly on the outer circumference of the connecting tube 81, and a circle of support ring 34 is arranged on both sides of the induction ring 83 of the limiting sleeve 32. Four circumferentially distributed pressure-sensitive sensors 84 are arranged between each support ring 34 and the induction ring 83. There is a gap in the connection between the connecting tube 81 and the piston 6, so that the support ring 34 can apply pressure to any pressure-sensitive sensor 84, and the connecting tube 81 contacts the pressure-sensitive sensors 84 at different positions. After the pressure-sensitive sensor 84 detects, it determines that it needs to rotate in that direction, and then the longitudinal motor 46 in the first universal connector 17 or the second universal connector 22 cooperates with the transverse motor 410 to drive the connecting arm 2 and the mounting sleeve 3 to rotate accordingly to cooperate with manual operation.

[0043] The free end of the threaded drive shaft 71 is provided with a non-circular limiting sliding hole 72 inwardly, and the cross-section of the limiting sliding hole 72 is set in the direction. The connecting head 8 is provided with a transmission shaft 85 slidably connected to the limiting sliding hole 72 inwardly, so that the connecting head 8 can be driven to rotate through the threaded driving shaft 71. The connecting head 8 is provided with a connecting sleeve 86 in the direction away from the limiting sliding sleeve 32. The free end of the connecting sleeve 86 is provided with a hexagonal sleeve hole inwardly, which is used to cooperate with the hexagonal head end of the puncture kit. The outer wall of the connecting sleeve 86 is provided with an external thread, and the external thread of the connecting sleeve 86 is connected to a clamping threaded knob 9. The connecting sleeve 86 is cut and divided into a plurality of elastic clips 87 inclined outwardly, and an elastic gasket 88 is provided on the inner side of each elastic clip 87. The clamping threaded knob 9 is rotated outward to squeeze the elastic clip 87 inward to close, so as to clamp the head end of the puncture kit.

[0044] Working principle: When performing bone marrow puncture, first insert the head end of the puncture kit into the sleeve hole of the connecting sleeve 86, turn the clamping threaded knob 9 to squeeze the elastic clip 87 to close inward and clamp the head end, and the medical staff holds the connecting head 8 to adjust the position. The connecting head 8 moves slightly to make the induction ring 83 offset relative to the support ring 34 and squeeze the corresponding pressure-sensitive sensor 84. The pressure-sensitive sensor 84 intelligently determines the direction of movement, and then the longitudinal motor 46 and the transverse motor 410 work together to drive the driving ball head sleeve 5 to drive the driving ball head 52 to move arbitrarily in the plane, driving the first ball head 21 or the second ball head 31 to rotate, and finally the connecting head 8 can follow the movement of the human hand to achieve rapid adjustment of the puncture needle position;

[0045] After adjusting the position, start the power motor 7, and the power motor 7 drives the threaded drive shaft 71 to rotate. During the rotation of the threaded drive shaft 71, the connection with the transmission shaft 85 drives the connector 8 to rotate, and then drives the puncture needle to rotate, and the threaded drive shaft 71 rotates to drive the piston 6 to slide outward, and the connection between the piston 6 and the connecting tube 81 pushes the connector 8 to gradually advance outward, so that the puncture needle is continuously pushed outward during the rotation process. After pushing outward to a quantitative position, the power motor 7 stops working, so that the puncture needle is accurately penetrated into the bone, and then the clamping threaded knob 9 is rotated in the opposite direction to loosen the head end of the puncture kit, so that the inner needle of the puncture kit can be taken out, and the bone marrow can be aspirated with a syringe.

[0046] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. An auxiliary bone marrow puncture device, comprising a horizontal slide rail (1), wherein the horizontal slide rail (1) is slidably connected to a horizontal slide sleeve (12), and the horizontal slide rail (1) is equipped with a horizontal drive motor (13) for driving the horizontal slide sleeve (12) to slide, characterized in that: The upper end of the horizontal sliding sleeve (12) is provided with a first universal connector (17), the upper end of the first universal connector (17) is connected to a connecting arm (2), one end of the connecting arm (2) is provided with a first ball head (21) universally connected to the first universal connector (17), the free end of the connecting arm (2) is provided with a second universal connector (22), one side of the second universal connector (22) is connected to a mounting sleeve (3), and one end of the mounting sleeve (3) is provided with a second ball head (31) universally connected to the second universal connector (22); A limiting sleeve (32) is provided outwardly at the free end of the installation sleeve (3), a power motor (7) is installed in the installation sleeve (3), a piston (6) which cannot rotate relative to the limiting sleeve (32) is slidably connected therein, a power output shaft of the power motor (7) is connected to a threaded drive shaft (71), the piston (6) is provided with a threaded drive hole (62) threadedly connected to the threaded drive shaft (71), the free end of the limiting sleeve (32) is movably connected to a connector (8), the connector The head (8) is provided with a connecting pipe (81) which is rotatably connected to the piston (6) and is covered with the threaded drive shaft (71). The free end of the threaded drive shaft (71) is provided with a non-circular limiting sliding hole (72) inwardly. The connecting head (8) is provided with a transmission shaft (85) which is slidably connected to the limiting sliding hole (72). The connecting head (8) is provided with a connecting sleeve (86) in a direction away from the limiting sliding sleeve (32). The free end of the connecting sleeve (86) is provided with a sleeve hole inwardly.

2. The auxiliary bone marrow puncture device according to claim 1, characterized in that: A horizontal slide groove (14) is provided inwardly on one side of the horizontal slide rail (1), a horizontal threaded shaft (15) is rotatably connected in the horizontal slide groove (14), a power output shaft of the horizontal drive motor (13) is connected to one end of the horizontal threaded shaft (15), and the horizontal slide sleeve (12) extends into the horizontal slide groove (14) and is connected to a horizontal threaded sleeve (16) threadedly connected to the horizontal threaded shaft (15).

3. The auxiliary bone marrow puncture device according to claim 1, characterized in that: The upper end of the first universal connector (17) is provided with a first ball head ring (18) slidably connected to the first ball head (21); the second universal connector (22) is provided with a second ball head ring (23) slidably connected to the second ball head (31) on the side facing the mounting sleeve (3); the first universal connector (17) and the second universal connector (22) are both provided with longitudinal slide rails (41) and transverse slide rails (42) perpendicular to each other; each longitudinal slide rail (41) and each transverse slide rail (42) are located on the side facing the first ball head ring (18) or the second ball head ring (23); Each transverse slide rail (42) is provided with a longitudinal slider (43) slidably connected to the corresponding longitudinal slide rail (41), each longitudinal slide rail (41) is installed with a longitudinal motor (46) for driving the corresponding longitudinal slider (43) to slide, each transverse slide rail (42) is slidably connected to a transverse slider (47), each transverse slide rail (42) is installed with a transverse motor (410) for driving the corresponding transverse slider (47) to slide, and a driving ball head sleeve (5) is provided at the free end of each transverse motor (410), the first ball head (21) and the second ball head (31) are both provided with a connecting sliding hole (51) inwardly, each driving ball head sleeve (5) is slidably connected with a driving ball head (52), and each driving ball head (52) is provided with a connecting sliding shaft (53) slidably connected to the corresponding connecting sliding hole (51) outwardly.

4. The auxiliary bone marrow puncture device according to claim 3, characterized in that: An induction ring (83) is arranged outwardly on the outer circumference of the connecting tube (81); support rings (34) are arranged on both sides of the induction ring (83) of the limiting sleeve (32); a plurality of circumferentially distributed pressure-sensitive sensors (84) are arranged between each support ring (34) and the induction ring (83); a gap exists between the connection between the connecting tube (81) and the piston (6), so that the support ring (34) can apply pressure to any pressure-sensitive sensor (84).

5. The auxiliary bone marrow puncture device according to claim 3, characterized in that: The longitudinal slide rail (41) is provided with a longitudinal slide groove (44) arranged along its length direction and slidably connected to the longitudinal slider (43); a longitudinal threaded shaft (45) is rotatably connected in the longitudinal slide groove (44); a power output shaft of the longitudinal motor (46) is connected to one end of the longitudinal threaded shaft (45); the longitudinal slider (43) is provided with a longitudinal threaded hole threadedly connected to the longitudinal threaded shaft (45); the transverse slide rail (42) is provided with a transverse slide groove (48) arranged along its length direction and slidably connected to the transverse slider (47); a transverse threaded shaft (49) is rotatably connected in the transverse slide groove (48); a power output shaft of the transverse motor (410) is connected to one end of the transverse threaded shaft (49); the transverse slider (47) is provided with a transverse threaded hole threadedly connected to the transverse threaded shaft (49).

6. The auxiliary bone marrow puncture device according to claim 3, characterized in that: Both ends of the transverse slide rail (42) are provided with connecting sleeves (411) arranged along the length direction of the longitudinal slide rail (41), and the first universal connector (17) or the second universal connector (22) is provided with a limiting sliding shaft (412) slidably connected to the corresponding connecting sleeve (411).

7. The auxiliary bone marrow puncture device according to claim 1, characterized in that: The inner wall of the limiting sliding sleeve (32) is provided with a plurality of limiting sliding strips (33) arranged along its length direction, and the outer periphery of the piston (6) is provided with a plurality of limiting sliding grooves (61) which are slidably connected to the limiting sliding strips (33) in a one-to-one correspondence.

8. The auxiliary bone marrow puncture device according to claim 1, characterized in that: The piston (6) is provided with a limit rotation ring (63) with an L-shaped cross section at one end facing outward, and a rotation connection ring (82) matching with the limit rotation ring (63) is provided inwardly at the free edge of the connection pipe (81).

9. The auxiliary bone marrow puncture device according to claim 1, characterized in that: The outer wall of the connecting sleeve (86) is provided with an external thread, the external thread of the connecting sleeve (86) is connected to a clamping thread knob (9), and the connecting sleeve (86) is cut and divided into a plurality of elastic clips (87) inclined outward.

10. The auxiliary bone marrow puncture device according to claim 9, characterized in that: An elastic gasket (88) is arranged on the inner side of each elastic clip (87).

Images