Lumbar puncture auxiliary mechanism and use method

Abstract

The lumbar puncture auxiliary mechanism comprises a main body assembly, the main body assembly comprises a positioning disc and a supporting shell fixed to one side of the positioning disc, and a puncture needle penetrates through the positioning disc and the supporting shell; the adjusting assembly is arranged in the supporting shell and comprises a driving piece arranged on one side of the positioning disc, a transmission piece is arranged on one side of the driving piece, an adjusting piece is arranged on one side of the transmission piece and comprises a limiting shell fixed to the inner wall of the supporting shell, a rack slides in the limiting shell, and a first spring is fixed to the end of the rack. By arranging the adjusting assembly, intermittent supply can be conducted on the puncture needle, so that the puncture needle can smoothly break through the ligamentum flavum, and the situation of improper force exertion is avoided; the puncture process can be judged, so that the opportunity that the puncture needle enters the epidural space and the subarachnoid space is accurately grasped, and accidental injuries to the human body are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of medical auxiliary equipment, and in particular to a lumbar puncture auxiliary mechanism and a use method thereof. Background Art

[0002] In the modern medical field, lumbar puncture is an extremely important diagnostic and therapeutic method, widely used in the diagnosis of central nervous system diseases, cerebrospinal fluid pressure measurement, intrathecal drug injection, etc. However, the traditional lumbar puncture operation faces many challenges. During the puncture process, the puncture force and depth are difficult to control. When breaking through the yellow ligament, the doctor needs to rely on experience to control the force, and lacks a quantitative control mechanism, which leads to improper force. If the force is too light, the puncture needle cannot successfully break through the yellow ligament, prolonging the operation time; if the force is too strong, the puncture needle will go too deep and damage the spinal cord or other important tissues. In addition, there are deficiencies in the judgment of the puncture process. At present, the positioning of the epidural space and the subarachnoid space mainly depends on the doctor's subjective judgment, and there is a lack of objective detection and control devices. This makes it difficult to accurately grasp the timing of the puncture needle entering the epidural space and the subarachnoid space, and the risk of puncturing too deep or too shallow is high, which in turn causes serious complications such as spinal cord injury, bleeding, and infection. Summary of the invention

[0003] In view of the problems existing in the above-mentioned existing lumbar puncture auxiliary mechanism and use method, the present invention is proposed.

[0004] Therefore, the problem to be solved by the present invention is that the safety and accuracy of existing lumbar puncture are low.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a lumbar puncture auxiliary mechanism, comprising a main body assembly, including a positioning plate, a support shell fixed to one side of the positioning plate, and a puncture needle passing through the positioning plate and the support shell; An adjusting component is arranged in the supporting shell, and includes a driving member arranged on one side of the positioning plate, a transmission member is arranged on one side of the driving member, an adjusting member is arranged on one side of the transmission member, and the adjusting member includes a limiting shell fixed to the inner wall of the supporting shell, a rack is slidably provided in the limiting shell, a first spring is fixed to the end of the rack, a positioning block is fixed to one side of the rack, a threaded rod is rotatably connected in the limiting shell, a knob is fixed to the end of the threaded rod, and a stop block is rotatably connected to the surface of the threaded rod through a thread.

[0006] As a preferred embodiment of the lumbar puncture auxiliary mechanism of the present invention, the adjustment component also includes a detection member arranged on one side of the adjustment member, including a connecting sleeve fixed to the surface of the supporting shell, a catheter is inserted in the connecting sleeve, and a mounting plug is fixed to the other end of the catheter.

[0007] As a preferred solution of the lumbar puncture auxiliary mechanism of the present invention, the detection component also includes a connecting tube inserted into the connecting sleeve, an adjusting tube is fixed on the surface of the connecting tube, a sliding sleeve slides inside the adjusting tube, and a second spring is arranged inside the sliding sleeve.

[0008] As a preferred embodiment of the lumbar puncture auxiliary mechanism of the present invention, the adjustment component also includes a positioning member arranged on one side of the limit shell, including a positioning shell fixed on one side of the limit shell, a slider sliding in the positioning shell, a third spring arranged in the slider, a positioning groove formed on the surface of the slider, an insert block fixed on the end of the sliding sleeve, a limit block fixed on one side of the slider, and a reset rod fixed on one side of the slider.

[0009] As a preferred solution of the lumbar puncture auxiliary mechanism described in the present invention, the driving member includes a support column fixed to one side of the positioning plate, a support shaft is fixed inside the support column, a friction wheel is rotatably connected to the surface of the support shaft, a support rod is fixed to one side of the support column, the other support shaft slides on the surface of the support rod, and the surface of the support shaft is rotatably connected to the extrusion wheel.

[0010] As a preferred solution of the lumbar puncture auxiliary mechanism described in the present invention, the driving member also includes a slide that slides on the surface of the support rod, a threaded column is connected to the slide through a threaded rotation, a rotating rod is fixed to the end of the threaded column, and a fastening wheel is fixed to the other end of the rotating rod.

[0011] As a preferred embodiment of the lumbar puncture auxiliary mechanism of the present invention, the transmission member includes a worm wheel fixed to one side of the friction wheel, a worm is provided on one side of the worm wheel, a support seat is fixed to one side of the positioning plate, a rotating column is rotatably connected in the support seat, and the worm is fixed to the surface of the rotating column.

[0012] As a preferred solution of the lumbar puncture auxiliary mechanism of the present invention, the transmission member further comprises a reversing disc fixed to the end of the rotating column, a rotating gear is rotatably connected to the surface of the reversing disc, and the rotating gear is meshed with the rack.

[0013] As a preferred solution of the lumbar puncture auxiliary mechanism of the present invention, a driving rod is fixed to one side of the rack, and a positioning bar is fixed to one side of the support shell.

[0014] As a preferred embodiment of the method for using the lumbar puncture auxiliary mechanism of the present invention, the puncture point is first determined, the positioning plate is fixed to the patient's waist, and the puncture point is located at the through hole of the positioning plate, and the installation plug is inserted into the tail of the puncture needle; Then, insert the puncture needle through the support shell and the positioning plate into the patient's body until it reaches the side of the yellow ligament; At this time, the fastening wheel is rotated to clamp the puncture needle, the right thumb presses the positioning bar, and the index finger reciprocates to push the driving rod to one side of the positioning bar, so that the puncture needle is fed intermittently; When the reset rod moves, the driving of the driving rod is stopped, the installation plug is pulled out, and the reset rod is pushed to reset, and at this time, the knob is turned to adjust the driving rod to an appropriate scale; Press the positioning bar with the right thumb again, and press the driving rod back and forth with the index finger until cerebrospinal fluid flows out of the tail of the puncture needle.

[0015] The beneficial effects of the present invention are as follows: by setting the adjustment component, the puncture needle can be intermittently supplied, so that the puncture needle can smoothly break through the yellow ligament without causing improper force; The progress of puncture can be judged, so as to accurately grasp the timing of the puncture needle entering the epidural space and subarachnoid space, thereby reducing accidental damage to the human body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them: Figure 1 The figure is a structural diagram of a lumbar puncture auxiliary mechanism and its usage.

[0017] Figure 2 The present invention is a cross-sectional structural diagram of a support shell of a lumbar puncture auxiliary mechanism and a method of use.

[0018] Figure 3 A side structural diagram of a support shell for a lumbar puncture auxiliary mechanism and a method of use.

[0019] Figure 4 Lumbar puncture auxiliary mechanism and method of use Figure 3 Cross-sectional structural diagram at AA in the middle.

[0020] Figure 5 The present invention is a structural diagram of a connecting tube for a lumbar puncture auxiliary mechanism and a method of use.

[0021] Figure 6 The present invention is a cross-sectional structural diagram of a lumbar puncture auxiliary mechanism and a method of use of the abutment.

[0022] Figure 7 The present invention is a cross-sectional structural diagram of a positioning shell for a lumbar puncture auxiliary mechanism and a method of use.

[0023] Figure 8 The present invention is a cross-sectional structural diagram of a rotating column of a lumbar puncture auxiliary mechanism and a method of use.

[0024] In the figure: main assembly 100; positioning plate 101; support shell 102; adjustment assembly 200; driving member 201; transmission member 202; adjustment member 203; limit shell 203a; rack 203b; first spring 203c; positioning block 203d; threaded rod 203e; knob 203f; stop block 203g; detection member 204; connecting sleeve 204a; guide tube 204b; installation plug 204c; connecting pipe 204d; adjustment pipe 204e; sliding sleeve 204f; second spring 204g; positioning member 205; positioning shell 205a ; Slider 205b; third spring 205c; positioning groove 205b-1; insert block 204h; limit block 205d; reset rod 205e; support column 201a; support shaft 201b; friction wheel 201c; support rod 201d; extrusion wheel 201e; slide 201f; threaded column 201g; rotating rod 201h; fastening wheel 201i; worm wheel 202a; worm 202b; support seat 202c; rotating column 202d; reversing plate 202e; rotating gear 202f; driving rod 203h; positioning strip 203i. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0026] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0027] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0028] Example 1, reference Figure 1~Figure 4, which is the first embodiment of the present invention, and provides a lumbar puncture auxiliary mechanism, which includes a main body assembly 100, including a positioning plate 101, a support shell 102 fixed to one side of the positioning plate 101, and a puncture needle passing through the positioning plate 101 and the support shell 102. Through holes are provided in the middle parts of the positioning plate 101 and the support shell 102, so that the puncture needle can pass through the through holes, and the through holes of the positioning plate 101 and the support shell 102 can make the puncture needle vertically enter the patient's body when the positioning plate 101 fits the patient's waist; When performing routine operations such as cerebrospinal fluid collection and pressure measurement, the puncture needle is usually perpendicular to the patient's back skin, with the L3-4 or L4-5 intervertebral space as the puncture point. The needle is inserted vertically, allowing the puncture needle to smoothly pass through the skin, subcutaneous tissue, supraspinous ligament, interspinous ligament, and yellow ligament, enter the epidural space and subarachnoid space, and obtain cerebrospinal fluid samples.

[0029] The epidural space is a narrow gap between the periosteum of the spinal canal and the dura mater. It is filled with fat, internal vertebral venous plexus and lymphatic vessels, and spinal nerve roots and their accompanying blood vessels pass through it. The pressure is negative, lower than normal atmospheric pressure.

[0030] During specific use, the doctor first disinfects the patient's waist, then determines the puncture point and marks it with a sterile marker pen, so that the positioning plate 101 is fixed to the patient's waist through medical glue, and the through hole of the positioning plate 101 is located at the position marked by the sterile marker pen.

[0031] The adjusting assembly 200 is arranged in the supporting shell 102, and includes a driving member 201 arranged on one side of the positioning disk 101. A transmission member 202 is arranged on one side of the driving member 201. The transmission member 202 is attached to the surface of the puncture needle and is used to drive the puncture needle to move. An adjusting member 203 is arranged on one side of the transmission member 202. The adjusting member 203 is used to drive the transmission member 202 to move and can limit the transmission member 202. When the adjusting member 203 is not working, the transmission member 202 cannot drive the puncture needle to move, and when the puncture needle is clamped by the transmission member 202, the puncture needle cannot actively move into or out of the human body. The adjusting member 203 includes a limiting shell 203a fixed to the inner wall of the supporting shell 102, and a rack 203b is slidably arranged in the limiting shell 203a. The rack 203b can slide stably through the limiting of the limiting shell 203a. A first spring 203c is fixed to the end of 03b, and the first spring 203c is in a compressed state. A positioning block 203d is fixed to one side of the rack 203b. A threaded rod 203e is rotatably connected in the limiting shell 203a, and a knob 203f is fixed to the end of the threaded rod 203e. A stop block 203g is rotatably connected to the surface of the threaded rod 203e through a thread. A through hole is provided on the positioning block 203d, so that the threaded rod 203e can pass through the positioning block 203d without contacting the positioning block 203d. Rotating the knob 203f can drive the threaded rod 203e to rotate, so that the threaded rod 203e drives the stop block 203g to move, so that the stop block 203g drives the positioning block 203d to move, so that the positioning block 203d drives the rack 203b to move, so as to adjust the initial position of the rack 203b.

[0032] Specifically, the adjustment component 200 also includes a detection member 204 arranged on one side of the adjustment member 203, including a connecting sleeve 204a fixed to the surface of the supporting shell 102, a catheter 204b is inserted in the connecting sleeve 204a, and a mounting plug 204c is fixed to the other end of the catheter 204b. The mounting plug 204c is plugged into the tail of the puncture needle. Through the setting of the mounting plug 204c, the catheter 204b and the puncture needle are connected.

[0033] Specifically, the detection member 204 also includes a connecting tube 204d inserted into the connecting sleeve 204a, and an adjusting tube 204e is fixed on the surface of the connecting tube 204d. The connecting tube 204d is used to connect the adjusting tube 204e with the catheter 204b, thereby indirectly connecting with the puncture needle. A sliding sleeve 204f slides inside the adjusting tube 204e, and the connection between the adjusting tube 204e and the sliding sleeve 204f is in a sealed state. A second spring 204g is arranged in the sliding sleeve 204f. When the end of the puncture needle is inserted into the epidural space, the inside of the puncture needle is in a negative pressure state, and the elastic force of the second spring 204g is very small. The catheter 204b, the connecting tube 204d, the adjusting tube 204e and the sliding sleeve 204f will form the same negative pressure as the puncture needle, so that the sliding sleeve 204f compresses the second spring 204g with very small elastic force.

[0034] Specifically, the adjustment component 200 also includes a positioning member 205 arranged on one side of the limiting shell 203a, including a positioning shell 205a fixed on one side of the limiting shell 203a, a slider 205b slides in the positioning shell 205a, and the slider 205b can be stably lifted and lowered by positioning the positioning shell 205a. A third spring 205c is arranged in the slider 205b, and the third spring 205c is currently in a compressed state. A positioning groove 205b-1 is opened on the surface of the slider 205b, and an insert block 204h is fixed on the end of the sliding sleeve 204f, and the insert block 204h is inserted into the positioning groove 205b-1, so as to limit the slider 205b. When the sliding sleeve 204f compresses the second spring 204g with very small elastic force, the insert block 204h can be moved out of the positioning groove 205b-1, thereby releasing the limit on the slider 205b. Under the push of the third spring 205c, the slider 205b moves toward the rack 203b. A limiting block 205d is fixed on one side of the slider 205b, so that the limiting block 205d limits the rack 203b, thereby preventing the rack 203b from moving. A reset rod 205e is fixed on one side of the slider 205b, and the reset rod 205e can be driven to move when the slider 205b moves, so that the user can judge that the end of the puncture needle is located in the epidural space.

[0035] Specifically, the driving member 201 includes a support column 201a fixed to one side of the positioning disk 101, a support shaft 201b is fixed inside the support column 201a, and a friction wheel 201c is rotatably connected to the surface of the support shaft 201b. The friction wheel 201c has a large friction force. When the puncture needle is pressed on the surface of the friction wheel 201c, the friction wheel 201c can drive the puncture needle to move, so that the two will not slip easily. A support rod 201d is fixed to one side of the support column 201a, and another support shaft 201b slides on the surface of the support rod 201d. The surface of the support shaft 201b is rotatably connected to the squeezing wheel 201e, and the puncture needle can be squeezed by the squeezing wheel 201e, thereby increasing the friction force between the friction wheel 201c and the puncture needle. When the squeezing wheel 201e does not squeeze the puncture needle, the puncture needle can easily pass through the side of the friction wheel 201c without driving the friction wheel 201c.

[0036] Example 2, reference Figures 2 to 8 , which is the second embodiment of the present invention, and this embodiment is based on the previous embodiment.

[0037] Specifically, the driving member 201 also includes a slide 201f sliding on the surface of the support rod 201d, and the slide 201f is fixed to the surface of the support shaft 201b inside the extrusion wheel 201e, so that the extrusion wheel 201e can approach or move away from the friction wheel 201c. A threaded column 201g is connected to the slide 201f through a threaded rotation, and a rotating rod 201h is fixed to the end of the threaded column 201g, and a fastening wheel 201i is fixed to the other end of the rotating rod 201h. The rotating rod 201h is rotatably connected to the support shell 102 and will not move in the support shell 102. Rotating the fastening wheel 201i can make the rotating rod 201h drive the threaded column 201g to rotate, thereby driving the slide 201f to move, so that the extrusion wheel 201e can approach or move away from the friction wheel 201c.

[0038] Specifically, the transmission member 202 includes a worm wheel 202a fixed to one side of the friction wheel 201c, a worm 202b is provided on one side of the worm wheel 202a, the worm wheel 202a and the worm 202b are meshed, a support seat 202c is fixed to one side of the positioning plate 101, a rotating column 202d is rotatably connected inside the support seat 202c, and the worm 202b is fixed to the surface of the rotating column 202d, so that the worm 202b can rotate stably, and the rotation of the worm 202b can drive the worm wheel 202a to rotate, so that the worm wheel 202a drives the friction wheel 201c to rotate, thereby driving the puncture needle to move.

[0039] Specifically, the transmission member 202 further comprises a reversing disc 202e fixed to the end of the rotating column 202d, the surface of the reversing disc 202e is rotatably connected with a rotating gear 202f, the rotating gear 202f is meshed with the rack 203b, a rotatably connected card plate is arranged inside the reversing disc 202e, and a compression spring is arranged on one side of the card plate, and a plurality of card slots are opened on the inner wall of the rotating gear 202f, under the elastic force of the compression spring, the card plate can be clamped in the card slot of the rotating gear 202f, so that When the rack 203b moves toward the direction of the first spring 203c, the reversing disk 202e can be driven to rotate by rotating the gear 202f. When the rack 203b is reset, the slot of the rotating gear 202f will slide over the surface of the card plate, thereby failing to drive the reversing disk 202e to rotate. The card plate, the compression spring and the slot of the rotating gear 202f form a ratchet structure, so that the rotating gear 202f can only drive the reversing disk 202e to rotate in one direction.

[0040] Specifically, a driving rod 203h is fixed to one side of the rack 203b, a positioning bar 203i is fixed to one side of the support shell 102, and a scale is set on the top of the support shell 102 for judging the position of the driving rod 203h. When the driving rod 203h moves from different scales to the side of the positioning bar 203i, it can drive the friction wheel 201c to rotate at different angles.

[0041] Example 3, reference Figure 1 to Figure 8 , which is the third embodiment of the present invention, is based on the first two embodiments, and provides a method for using a lumbar puncture assisting mechanism, including a lumbar puncture assisting mechanism, When in use, first disinfect the area around the waist, determine the puncture point, and mark it with a sterile marker pen, so that the positioning plate 101 is fixed to the patient's waist through medical glue, and the through hole of the positioning plate 101 is located at the position marked by the sterile marker pen, and the installation plug 204c is inserted into the tail of the puncture needle; Then, the puncture needle is inserted into the patient's body through the support shell 102 and the positioning plate 101 until it reaches the side of the yellow ligament. At this time, the user will clearly feel the resistance of the yellow ligament to the puncture needle, and the insertion of the puncture needle is stopped at this time. At this time, the fastening wheel 201i is rotated so that the friction wheel 201c and the extrusion wheel 201e clamp the puncture needle, and then the right thumb presses the positioning bar 203i, and the index finger reciprocates to press the driving rod 203h to one side of the positioning bar 203i. During this process, the driving rod 203h can drive the rack 203b to move, so that the rack 203b drives the rotating gear 202f to rotate, so that the reversing plate 202e drives the worm 202b and the worm wheel 202a to rotate, thereby driving the friction wheel 201c to rotate, so that the puncture needle is intermittently fed. Under normal circumstances, the thickness of the yellow ligament at the lumbar vertebrae 4-5 is generally 2-4 mm, and the feeding distance is set to 1 mm each time to prevent the puncture needle from feeding too much. As the puncture needle moves, the end of the puncture needle will penetrate the yellow ligament and enter the epidural space. At this time, the negative pressure in the epidural space makes the inside of the puncture needle in a negative pressure state. The elastic force of the second spring 204g is very small. The catheter 204b, the connecting tube 204d, the adjusting tube 204e and the sliding sleeve 204f will form the same negative pressure as the puncture needle, so that the sliding sleeve 204f compresses the second spring 204g with very small elastic force. When the second spring 204g is compressed, the insert block 204h can be moved out of the positioning groove 205b-1, thereby releasing the limit on the slider 205b. Pushed by the three springs 205c, the slider 205b moves toward the rack 203b. A limit block 205d is fixed on one side of the slider 205b, so that the limit block 205d limits the rack 203b, thereby preventing the rack 203b from moving. A reset rod 205e is fixed on one side of the slider 205b, and the reset rod 205e can be driven to move when the slider 205b moves, so that the user can judge that the end of the puncture needle is located in the epidural space, and at the same time, the rack 203b cannot move, preventing the puncture needle from puncturing further inward.

[0042] When the reset rod 205e moves, the driving of the driving rod 203h is stopped, and the installation plug 204c is pulled out, so that the catheter 204b, the connecting tube 204d, the regulating tube 204e and the sliding sleeve 204f are in a normal air pressure state, and the reset rod 205e is reset. At this time, the second spring 204g pushes the plug 204h to be reinserted into the positioning groove 205b-1. At this time, the knob 203f is turned to adjust the driving rod 203h to an appropriate scale, so as to adjust the depth of the puncture needle driven by the friction wheel 201c under the single stroke of the rack 203b. The distance between the yellow ligament and the subarachnoid space is usually between 2-5 mm, and the scale can be adjusted to 0.5 mm to prevent the puncture needle from being fed too deep; The right thumb presses the positioning bar 203i, and the index finger reciprocates to press the driving rod 203h, so that the puncture needle is continuously fed until cerebrospinal fluid flows out of the tail of the puncture needle. At this time, the end of the puncture needle is located in the subarachnoid space, thereby completing the insertion operation of the puncture needle.

[0043] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A lumbar puncture assisting mechanism, characterized in that: include, The main body component (100) comprises a positioning plate (101), and a support shell (102) fixed to one side of the positioning plate (101), wherein the puncture needle penetrates the positioning plate (101) and the support shell (102); An adjustment component (200) is arranged in the support shell (102), comprising a driving member (201) arranged on one side of the positioning plate (101), a transmission member (202) being arranged on one side of the driving member (201), an adjustment member (203) being arranged on one side of the transmission member (202), the adjustment member (203) comprising a limiting shell (203a) fixed to the inner wall of the support shell (102), a rack (203b) slidingly arranged in the limiting shell (203a), a first spring (203c) being fixed at the end of the rack (203b), a positioning block (203d) being fixed on one side of the rack (203b), a threaded rod (203e) being rotatably connected in the limiting shell (203a), a knob (203f) being fixed at the end of the threaded rod (203e), and a stop block (203g) being rotatably connected on the surface of the threaded rod (203e) via a thread.

2. The lumbar puncture assisting mechanism according to claim 1, characterized in that: The adjustment component (200) further comprises a detection member (204) arranged on one side of the adjustment member (203), comprising a connection sleeve (204a) fixed to the surface of the support shell (102), a guide tube (204b) inserted into the connection sleeve (204a), and a mounting plug (204c) fixed to the other end of the guide tube (204b).

3. The lumbar puncture assisting mechanism according to claim 2, characterized in that: The detection member (204) further comprises a connecting tube (204d) inserted into the connecting sleeve (204a), an adjusting tube (204e) being fixed on the surface of the connecting tube (204d), a sliding sleeve (204f) sliding inside the adjusting tube (204e), and a second spring (204g) being arranged inside the sliding sleeve (204f).

4. The lumbar puncture assisting mechanism according to claim 3, characterized in that: The adjustment component (200) further comprises a positioning member (205) arranged on one side of the limiting shell (203a), comprising a positioning shell (205a) fixed to one side of the limiting shell (203a), a slider (205b) sliding in the positioning shell (205a), a third spring (205c) being arranged in the slider (205b), a positioning groove (205b-1) being provided on the surface of the slider (205b), an insert block (204h) being fixed to the end of the sliding sleeve (204f), a limiting block (205d) being fixed to one side of the slider (205b), and a reset rod (205e) being fixed to one side of the slider (205b).

5. The lumbar puncture assisting mechanism according to claim 3 or 4, characterized in that: The driving member (201) comprises a support column (201a) fixed to one side of the positioning plate (101), a support shaft (201b) fixed inside the support column (201a), a friction wheel (201c) rotatably connected to the surface of the support shaft (201b), a support rod (201d) fixed to one side of the support column (201a), another support shaft (201b) sliding on the surface of the support rod (201d), and an extrusion wheel (201e) rotatably connected to the surface of the support shaft (201b).

6. The lumbar puncture assisting mechanism according to claim 5, characterized in that: The driving member (201) further comprises a slide (201f) sliding on the surface of the support rod (201d), a threaded column (201g) being rotatably connected in the slide (201f) via a thread, a rotating rod (201h) being fixed to the end of the threaded column (201g), and a fastening wheel (201i) being fixed to the other end of the rotating rod (201h).

7. The lumbar puncture assisting mechanism according to claim 6, characterized in that: The transmission member (202) comprises a worm wheel (202a) fixed to one side of the friction wheel (201c), a worm (202b) being provided on one side of the worm wheel (202a), a support seat (202c) being fixed to one side of the positioning plate (101), a rotating column (202d) being rotatably connected inside the support seat (202c), and the worm (202b) being fixed to the surface of the rotating column (202d).

8. The lumbar puncture assisting mechanism according to claim 7, characterized in that: The transmission member (202) further comprises a reversing disc (202e) fixed to the end of the rotating column (202d); a rotating gear (202f) is rotatably connected to the surface of the reversing disc (202e); and the rotating gear (202f) is meshed with the rack (203b).

9. The lumbar puncture assisting mechanism according to claim 8, characterized in that: A driving rod (203h) is fixed to one side of the rack (203b), and a positioning bar (203i) is fixed to one side of the support shell (102).

10. A method for using a lumbar puncture assisting mechanism, comprising the lumbar puncture assisting mechanism according to any one of claims 1 to 9, characterized in that: Firstly, the puncture point is determined, the positioning plate (101) is fixed to the patient's waist, and the puncture point is located at the through hole of the positioning plate (101), and the installation plug (204c) is inserted into the tail of the puncture needle; Then, the puncture needle is inserted into the patient's body through the support shell (102) and the positioning plate (101) until it reaches the side of the ligamentum flavum; At this time, the fastening wheel (201i) is rotated to clamp the puncture needle, the right thumb presses the positioning bar (203i), and the index finger reciprocates to press the driving rod (203h) to one side of the positioning bar (203i), so that the puncture needle is fed intermittently; When the reset rod (205e) moves, the driving of the driving rod (203h) is stopped, the mounting plug (204c) is pulled out, and the reset rod (205e) is moved to reset, and at this time, the knob (203f) is turned to adjust the driving rod (203h) to an appropriate scale; The right thumb presses the positioning bar (203i) again, and the index finger presses the driving rod (203h) back and forth until cerebrospinal fluid flows out of the tail of the puncture needle.

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