Lumbar puncture developing positioning device

Abstract

The invention relates to the technical field of lumbar puncture, in particular to a lumbar puncture developing positioning device which comprises a mechanical arm, a positioning grid and a supporting seat are fixedly connected to the mechanical arm, the positioning grid is used for emitting positioning longitude lines and positioning latitude lines, and a positioning assembly and a puncture assembly are fixedly connected to the supporting seat; the positioning assembly comprises a first telescopic rod and a suction cup, one end of the first telescopic rod is fixedly connected with the supporting seat, and the other end of the first telescopic rod is fixedly connected with the suction cup; the puncture assembly comprises a fixed pipe, a first square rod, a first lead screw, a second lead screw, a movable block, a first gear, an inner threaded pipe, a second square rod and a puncture pipe. The puncture position can be accurately aimed and positioned through the positioning grid, the probability of puncture failure easily caused by blind puncture under the condition that the spine structure is abnormal or varied or a patient is obese is reduced, blind puncture is prevented from being judged completely depending on experience of a doctor, and the success rate of puncture is increased.

Description

Technical Field

[0001] The present invention relates to the technical field of lumbar puncture, and in particular to a lumbar puncture imaging and positioning device. Background Art

[0002] Lumbar puncture imaging is a medical examination primarily used to diagnose central nervous system diseases. Lumbar puncture (LP) involves injecting a contrast agent into the subarachnoid space. X-rays and other imaging techniques are then used to observe the distribution of the contrast agent in the cerebrospinal fluid, thereby localizing and diagnosing central nervous system diseases. The subarachnoid space is the space between the arachnoid and pia mater covering the brain and spinal cord, where cerebrospinal fluid circulates. The patient typically lies in the side-lying position, with the back perpendicular to the bed, the head forward and the chest flexed, the hands clasped against the knees and the abdomen, and the spine flexed as far as possible. This increases the intervertebral space and facilitates needle entry. For some patients who cannot tolerate the side-lying position, a sitting position is also an option, but the patient should be bent forward when sitting.

[0003] The puncture site is generally chosen in the 3rd-4th intervertebral space of the lumbar spine, and sometimes the 2nd-3rd or 4th-5th intervertebral space can also be chosen. This is because these intervertebral spaces are relatively wide, and important structures such as the conus medullaris and cauda equina can be avoided during puncture. The puncture needle will pass through the skin, subcutaneous tissue, supraspinous ligament, interspinous ligament and yellow ligament, and finally enter the subarachnoid space. The lumbar puncture operation requires accurate puncture in the lumbar intervertebral space. The lumbar puncture in related technologies relies entirely on the doctor's experience and judgment to puncture blindly. If the patient's spinal structure is abnormal, mutated, or the patient is obese, blind puncture is likely to fail. If the puncture speed is fast, the depth is too large and damages the spinal cord. If the puncture speed is slow, the operation time is long, the patient suffers for a long time, and the operation efficiency is low. Summary of the Invention

[0004] The technical problem to be solved by the present invention is that the lumbar puncture in the related art relies entirely on the doctor's experience and judgment to perform the puncture blindly; if the patient's spinal structure is abnormal or mutated or the patient is obese, blind puncture is likely to fail; when the puncture speed is fast, the depth is too large and the spinal cord is damaged; when the puncture speed is slow, the operation time is long, the patient suffers for a long time, and the operation efficiency is low.

[0005] To solve the above technical problems, the present invention provides the following technical solutions: a lumbar puncture imaging positioning device, comprising a robotic arm, to which a positioning grid and a support base are fixedly connected, the positioning grid being used to emit positioning warp and weft lines, and the support base being fixedly connected to a positioning assembly and a puncture assembly; The positioning assembly includes a first telescopic rod and a suction cup, one end of the first telescopic rod is fixedly connected to the support seat, and the other end of the first telescopic rod is fixedly connected to the suction cup; The puncture assembly includes a fixed tube, a first square rod, a first screw rod, a second screw rod, a movable block, a first gear, an internally threaded tube, a second square rod and a puncture tube. The fixed tube is fixedly connected to the support seat, the inner wall of the fixed tube is slidably connected to the first square rod and the second square rod, the first square rod is provided with an inner tube and a square groove, the inner tube is rotatably connected to the outer wall of the internally threaded tube, the inner wall of the internally threaded tube is threadedly connected to the second screw rod, the inner wall of the square groove is slidably connected to the movable block, a first internal gear is provided on one side of the movable block, the first internal gear is meshed with the first gear, the first gear is fixedly connected to one end of the second screw rod, the other end of the second screw rod is threadedly connected to one end of the second square rod, and the other end of the second square rod is fixedly connected to the puncture tube.

[0006] As a preferred solution of the lumbar puncture imaging positioning device of the present invention, a second internal gear is provided on the other side of the movable block, the second internal gear is meshedly connected to the gear ring, and the gear ring is fixedly connected to the internal threaded tube.

[0007] As a preferred solution of the lumbar puncture imaging positioning device described in the present invention, the movable block is fixedly connected to an electromagnet, the movable block is slidably connected to one end of a third rod, and the other end of the third rod is slidably connected to the first screw rod.

[0008] As a preferred solution of the lumbar puncture imaging and positioning device described in the present invention, a accommodating cavity is opened inside the support seat, the first screw rod is rotatably connected to the inner wall of the sleeve, and the sleeve is fixedly connected to the inner wall of the accommodating cavity.

[0009] As a preferred solution of the lumbar puncture imaging positioning device described in the present invention, wherein: the first screw is fixedly connected to the second gear, the second gear is meshed with the third gear, the axis of the third gear is fixedly connected to the motor, the motor is fixedly connected to the motor base, and the motor base is fixedly connected to the inner wall of the accommodating chamber.

[0010] As a preferred solution of the lumbar puncture imaging positioning device of the present invention, the bottom of the first telescopic rod is fixedly connected to a fixed block, the inner wall of the fixed block is slidably connected to a baffle, and one end of the baffle extends into the interior of the first telescopic rod.

[0011] As a preferred solution of the lumbar puncture imaging positioning device of the present invention, the other end of the baffle is fixedly connected to the second telescopic rod, and the second telescopic rod is fixedly connected to the inner wall of the accommodating chamber through a mounting block.

[0012] As a preferred embodiment of the lumbar puncture imaging and positioning device of the present invention, four second telescopic rods are provided, the four second telescopic rods are respectively located around the puncture tube, and each second telescopic rod is respectively connected to the first trachea.

[0013] As a preferred embodiment of the lumbar puncture imaging and positioning device of the present invention, the suction cup is connected to one end of the second air tube, the second air tube passes through the first telescopic rod, and the other end of the second air tube is connected to the second telescopic rod.

[0014] As a preferred solution of the lumbar puncture imaging positioning device of the present invention, the radial dimension of the inner wall of the fixed tube is larger than that of the movable block.

[0015] The beneficial effects of the present invention are as follows: the present invention can accurately aim and locate the puncture position through the positioning grid, reduce the probability of puncture failure caused by blind puncture due to abnormal spinal structure, variation or patient obesity, avoid blind puncture relying entirely on the doctor's experience and judgment, and improve the success rate of puncture.

[0016] When the first telescopic rod is extended, it can drive the suction cup to move, and the suction cup contacts the patient's skin and absorbs the patient, which is conducive to fixing the relative position of the patient and the puncture tube, and avoids the patient turning over the body after positioning, which causes the relative position with the puncture tube to change and leads to inaccurate puncture position.

[0017] Under the premise of ensuring safety, the puncture tube moves quickly, which is conducive to reducing the operation time, reducing the patient's pain time, and improving the efficiency of the operation. When the puncture tube contacts the human body, the second screw rotates. Under the action of the thread, the second screw pushes the second square rod and the puncture tube to move slowly to the right side of the figure. At this time, the puncture tube moves slowly, which is convenient for controlling the depth of the puncture tube to prevent the puncture depth from being too large and damaging the spinal cord. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Schematic diagram of the overall structure of the embodiment of the present disclosure.

[0019] Figure 2 Schematic diagram of the positioning component structure in an embodiment of the present disclosure.

[0020] Figure 3 2 is a cross-sectional view of a fixed tube in an embodiment of the present disclosure.

[0021] Figure 4 2 is a cross-sectional view of the first square rod in the embodiment of the present disclosure.

[0022] Figure 5 This is an active block view in an embodiment of the present disclosure.

[0023] Figure 6 Schematic diagram of the accommodating cavity structure in an embodiment of the present disclosure.

[0024] Figure 7 In the embodiment of this disclosure Figure 5 A is an enlarged schematic diagram.

[0025] Figure 8 2 is a cross-sectional view of the first telescopic rod in an embodiment of the present disclosure.

[0026] Figure 92 is a cross-sectional view of a fixing block in an embodiment of the present disclosure.

[0027] Figure markings: robotic arm 1, positioning grid 2, support base 3, accommodating chamber 33, positioning assembly 4, first telescopic rod 41, fixed block 411, baffle 412, second telescopic rod 413, mounting block 414, first air tube 415, second air tube 416, suction cup 42, puncture assembly 5, fixed tube 51, first square rod 52, inner tube 521, square groove 522, first screw rod 53, sleeve 531, second gear 532, third gear 533, motor 534, motor base 535, second screw rod 54, movable block 55, first internal gear 551, second internal gear 552, gear ring 553, electromagnet 554, third rod 555, square hole 556, first gear 56, internal threaded tube 57, second square rod 58, puncture tube 59. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0029] Example 1, reference Figures 1-4 This embodiment provides a lumbar puncture imaging positioning device, comprising a robotic arm 1, to which a positioning grid 2 and a support base 3 are fixedly connected. The positioning grid 2 is used to emit positioning warp and weft lines. The support base 3 is fixedly connected to a positioning component 4 and a puncture component 5. The positioning assembly 4 includes a first telescopic rod 41 and a suction cup 42 , wherein one end of the first telescopic rod 41 is fixedly connected to the support base 3 , and the other end of the first telescopic rod 41 is fixedly connected to the suction cup 42 ; The puncture assembly 5 includes a fixed tube 51, a first square rod 52, a first screw rod 53, a second screw rod 54, a movable block 55, a first gear 56, an internally threaded tube 57, a second square rod 58 and a puncture tube 59. The fixed tube 51 is fixedly connected to the support seat 3, and the inner wall of the fixed tube 51 is slidably connected to the first square rod 52 and the second square rod 58. The first square rod 52 is provided with an inner tube 521 and a square groove 52. The inner tube 521 is rotatably connected to the outer wall of the internally threaded tube 57. The inner wall of the internally threaded tube 57 is threadedly connected to the second screw rod 54. The inner wall of the square groove 522 is slidably connected to the movable block 55. A first internal gear 551 is provided on one side of the movable block 55. The first internal gear 551 is meshed with the first gear 56. The first gear 56 is fixedly connected to one end of the second screw rod 54. The other end of the second screw rod 54 is threadedly connected to one end of the second square rod 58. The other end of the second square rod 58 is fixedly connected to the puncture tube 59.

[0030] In this embodiment, the robotic arm 1 preferably adopts the existing structure, and the robotic arm 1 can flexibly adjust the angle and position of the support base 3 and the positioning component 4 and the puncture component 5 fixed on the support base 3 to facilitate puncture of the patient. The positioning grid 2 adopts the existing laser generator, and the ray generator can emit laser. The laser includes multiple parallel positioning longitudes and positioning wefts, and the positioning longitudes and positioning wefts are perpendicular to each other.

[0031] In one embodiment, the line width B1 of the positioning meridian and the positioning weft is ≤1mm, the side line spacing H1 of two adjacent positioning wefts is 1mm≤H1≤2mm, and the side line spacing H2 of two adjacent positioning meridians is ≥H1. The positioning grid 2 can accurately aim and locate the puncture position, reducing the chance of puncture failure caused by blind puncture due to abnormal spinal structure, variation or obesity of the patient, avoiding blind puncture relying entirely on the doctor's experience and judgment, and improving the success rate of puncture.

[0032] Furthermore, when the first telescopic rod 41 is extended, it can drive the suction cup 42 to move, and the suction cup 42 contacts the patient's skin and absorbs the patient, which is conducive to fixing the relative position of the patient and the puncture tube 59, and preventing the patient from turning over the body after positioning, causing the relative position with the puncture tube 59 to change, resulting in an inaccurate puncture position; the pitch of the first screw rod 53 is larger than that of the second screw rod 54. When the first screw rod 53 rotates, under the action of the thread of the first screw rod 53, the first square rod 52 is pushed to Figure 3 The first square rod 52 moves to the right side in the middle. Since the pitch of the first screw rod 53 is larger, the first square rod 52 will move quickly. The inner tube 521 on the first square rod 52 is smaller than the square groove 52. The first square rod 52 pushes the movable block 55 to move. The movable block 55 pushes the second square rod 58 to move through the second screw rod 54. The second square rod 58 drives the puncture tube 59 to move. At this time, the puncture tube 59 does not touch the human body. Under the premise of ensuring safety, the puncture tube 59 moves quickly, which is conducive to reducing the operation time, reducing the patient's pain time, and improving the operation efficiency. When the puncture tube 59 touches the human body, the second screw rod 54 rotates at this time, and the second screw rod 54 pushes the second square rod 58 and the puncture tube 59 slowly to the left under the action of the thread. Figure 3 The puncture tube 59 moves to the right side of the spinal cord. At this time, the puncture tube 59 moves slowly, which is convenient for controlling the depth of the puncture tube 59 and preventing the puncture depth from being too large to damage the spinal cord.

[0033] Example 2, reference Figures 1-9 This embodiment is based on the previous embodiment, and differs from the previous embodiment in that.

[0034] Reference Figure 3-Figure 5 A second internal gear 552 is provided on the other side of the movable block 55 . The second internal gear 552 is meshedly connected to a gear ring 553 , and the gear ring 553 is fixedly connected to the internal threaded tube 57 .

[0035] In this embodiment, preferably, when the gear ring 553 is engaged with the second internal gear 552, the first internal gear 551 is disengaged from the first gear 56. At this time, the movable block 55 is inserted into the square groove 52, and the internal threaded tube 57 cannot rotate. When the first screw rod 53 rotates, the internal threaded tube 57 and the first square rod 52 are pushed to the left by the action of the thread. Figure 3 When the first internal gear 551 is engaged with the first gear 56, the gear ring 553 is disengaged from the second internal gear 552, and the movable block 55 slides out of the square groove 52. When the movable block 55 rotates, the first gear 56 can be driven to rotate by the first internal gear 551, and the first gear 56 drives the second screw rod 54 to rotate. The second screw rod 54 pushes the second square rod 58 and the puncture tube 59 slowly toward Figure 3 The puncture tube 59 moves to the right side of the spinal cord. At this time, the puncture tube 59 moves slowly, which is convenient for controlling the depth of the puncture tube 59 and preventing the puncture depth from being too large to damage the spinal cord.

[0036] Reference Figure 3-Figure 5 The movable block 55 is fixedly connected to the electromagnet 554 , and the movable block 55 is slidably connected to one end of the third rod 555 , and the other end of the third rod 555 is slidably connected to the first screw rod 53 .

[0037] In this embodiment, preferably, the gear ring 553 and the first gear 56 are both made of magnets. After the electromagnet 554 is energized, the electromagnet 554 and the gear ring 553 attract each other, and the electromagnet 554 and the first gear 56 repel each other. At this time, the gear ring 553 is meshed with the second internal gear 552, and the first internal gear 551 is disengaged from the first gear 56. A magnet block is fixed to the end of the third rod 555 close to the electromagnet 554. At this time, the electromagnet 554 repels the magnet block at the end of the third rod 555, pushing the third rod 555 into the first screw rod 53, and the third rod 555 is disengaged from the movable block 55. At this time, the movable block 55 is inserted into the square groove 52, and the movable block 55, the internal threaded tube 57 and the first square rod 52 form a whole. The internal threaded tube 57 cannot rotate at this time. When the first screw rod 53 rotates, the internal threaded tube 57 and the first square rod 52 are pushed forward under the action of the thread. Figure 3After the positive and negative poles of the current are changed, the magnetic pole directions of the electromagnet 554 are opposite, the electromagnet 554 and the gear ring 553 check each other, the electromagnet 554 and the first gear 56 attract each other, and when the first internal gear 551 is meshed with the first gear 56, the gear ring 553 is disengaged from the second internal gear 552, and the movable block 55 slides out of the square groove 52. The electromagnet 554 and the third rod 555 are attracted to each other at this time, and the end of the third rod 555 slides into the square hole 556 opened on the movable block 55, and the electromagnet 554 drives the third rod 555 to slide out from the first screw rod 53. At this time, the rotation of the first screw rod 53 will drive the internal threaded tube 57 to rotate in the first square rod 52. At this time, the internal threaded tube 57 will not move Figure 3 The first screw rod 53 rotates to drive the third rod 555 to rotate, and the third rod 555 drives the movable block 55 to rotate. The movable block 55 drives the first gear 56 to rotate through the first internal gear 551, and the first gear 56 drives the second screw rod 54 to rotate. The second screw rod 54 pushes the second square rod 58 and the puncture tube 59 slowly toward the right side under the action of the thread. Figure 3 The puncture tube 59 moves to the right side of the spinal cord. At this time, the puncture tube 59 moves slowly, which is convenient for controlling the depth of the puncture tube 59 and preventing the puncture depth from being too large to damage the spinal cord.

[0038] Reference Figure 6 The support seat 3 has an accommodating chamber 33 formed inside. The first screw rod 53 is rotatably connected to the inner wall of the sleeve 531 , and the sleeve 531 is fixedly connected to the inner wall of the accommodating chamber 33 .

[0039] Preferably, in this embodiment, the accommodating cavity 33 is used to accommodate the sleeve 531 , the first screw rod 53 can rotate on the inner wall of the sleeve 531 , and the sleeve 531 is used to fix the position of the first screw rod 53 .

[0040] Reference Figure 6 and Figure 7 The first screw rod 53 is fixedly connected to the second gear 532, the second gear 532 is meshed with the third gear 533, the axis of the third gear 533 is fixedly connected to the motor 534, the motor 534 is fixedly connected to the motor base 535, and the motor base 535 is fixedly connected to the inner wall of the accommodating chamber 33.

[0041] In this embodiment, the motor base 535 is preferably used to fix the position of the motor 534. When the motor 534 is working, it can drive the third gear 533 to rotate, the third gear 533 drives the second gear 532 to rotate, and the second gear 532 drives the first screw rod 53 to rotate, providing power for the first screw rod 53.

[0042] Reference Figure 6 and Figure 9The bottom of the first telescopic rod 41 is fixedly connected to the fixed block 411 , the inner wall of the fixed block 411 is slidably connected to the baffle 412 , and one end of the baffle 412 extends into the interior of the first telescopic rod 41 .

[0043] Preferably, in this embodiment, when the baffle 412 slides into the first telescopic rod 41 , the first telescopic rod 41 can be sealed, and gas cannot continue to enter the first telescopic rod 41 , so the length of the first telescopic rod 41 can be fixed.

[0044] Reference Figure 6 and Figure 9 The other end of the baffle 412 is fixedly connected to the second telescopic rod 413 , and the second telescopic rod 413 is fixedly connected to the inner wall of the accommodating cavity 33 through the mounting block 414 .

[0045] Preferably, in this embodiment, the mounting block 414 is used to fix the position of the second telescopic rod 413. When the second telescopic rod 413 is extended or retracted, the baffle 412 can be driven to slide in the fixing block 411. When the second telescopic rod 413 is extended, the second telescopic rod 413 drives the baffle 412 to slide into the first telescopic rod 41, thereby sealing the first telescopic rod 41. At this time, the gas cannot continue to enter the first telescopic rod 41, and the length of the first telescopic rod 41 can be fixed. When the second telescopic rod 413 is retracted, the second telescopic rod 413 drives the baffle 412 to slide out of the first telescopic rod 41. At this time, the gas can continue to enter the first telescopic rod 41, or be drawn out of the first telescopic rod 41, thereby releasing the fix on the length of the first telescopic rod 41.

[0046] Reference Figure 2 Four second telescopic rods 413 are provided, and the four second telescopic rods 413 are respectively located around the puncture tube 59, and each second telescopic rod 413 is connected to the first trachea 415.

[0047] In this embodiment, preferably, four second telescopic rods 413 are respectively positioned around the puncture tube 59. When the first telescopic rod 41 is extended, it can drive the suction cup 42 to move. The suction cup 42 contacts the patient's skin and absorbs the patient, which helps to fix the relative position of the patient and the puncture tube 59. This prevents the patient from turning over after positioning, causing the relative position relative to the puncture tube 59 to change, resulting in an inaccurate puncture position. The first air tube 415 is connected to the tail end of the second telescopic rod 413. The first air tube 415 is connected to an existing air pump, which is used to pump air into the first air tube 415.

[0048] Reference Figure 6 、 Figure 8 and Figure 9 The suction cup 42 is connected to one end of the second air pipe 416 , the second air pipe 416 passes through the first telescopic rod 41 , and the other end of the second air pipe 416 is connected to the second telescopic rod 413 .

[0049] Preferably, in this embodiment, the first air pipe 415 is connected to an existing air pump, and the air pump is used to pump gas into the first air pipe 415, at which time the first telescopic rod 41 is extended.

[0050] Reference Figure 4 The radial dimension of the inner wall of the fixed tube 51 is larger than that of the movable block 55 .

[0051] Preferably, in this embodiment, the movable block 55 is facilitated to rotate inside the fixed tube 51 and prevents the movable block 55 from being stuck.

[0052] During use, air is pumped into the first air tube 415 through the air pump, and the first telescopic rod 41 is extended. When the first telescopic rod 41 is extended, it can drive the suction cup 42 to move, and the suction cup 42 contacts the patient's skin, and the suction cup 42 is squeezed to suck the patient. At this time, the air inside the suction cup 42 is squeezed into the second air tube 416, and the air enters the second telescopic rod 413 through the second air tube 416. At this time, when the second telescopic rod 413 is extended, the second telescopic rod 413 drives the baffle 412 to slide into the first telescopic rod 41. The baffle 412 blocks the air inlet between the first air tube 415 and the first telescopic rod 41, and can seal the first telescopic rod 41. At this time, the gas cannot continue to enter the first telescopic rod 41, and the length of the first telescopic rod 41 can be fixed. At the same time, the baffle 412 squeezes the second air tube 416 and also seals the second air tube 416. At this time, air cannot enter the suction cup 42, maintaining the suction force of the suction cup 42. This is beneficial for fixing the relative position of the patient and the puncture tube 59, and preventing the patient from turning over after positioning, causing the relative position with the puncture tube 59 to change, resulting in an inaccurate puncture position.

[0053] When it needs to be removed, the suction cup 42 can be pulled out with force. At this time, the second telescopic rod 413 suddenly contracts, and the second telescopic rod 413 drives the baffle 412 to slide out from the inside of the first telescopic rod 41, and the air inlet between the first air pipe 415 and the first telescopic rod 41 is exposed. At this time, the gas can continue to enter the inside of the first telescopic rod 41, or be drawn out from the first telescopic rod 41, thereby releasing the fixation of the length of the first telescopic rod 41.

[0054] After the suction cup 42 absorbs the human body, the motor 534 is controlled to work, the motor 534 drives the third gear 533 to rotate, the third gear 533 drives the second gear 532 to rotate, the second gear 532 drives the first screw rod 53 to rotate, providing power for the first screw rod 53, and energizing the electromagnet 554. The electromagnet 554 and the gear ring 553 attract each other, and the electromagnet 554 and the first gear 56 repel each other. At this time, the gear ring 553 is engaged with the second internal gear 552, and the first internal gear 551 is disengaged from the first gear 56. The third rod 555 is closed, and a magnet block is fixed on one end of the third rod 555 close to the electromagnet 554. At this time, the electromagnet 554 repels the magnet block at the end of the third rod 555, pushing the third rod 555 into the first screw rod 53. The third rod 555 is separated from the movable block 55. At this time, the movable block 55 is inserted into the square groove 52. The movable block 55, the internal threaded tube 57 and the first square rod 52 form a whole. The internal threaded tube 57 cannot rotate at this time. When the first screw rod 53 rotates, the internal threaded tube 57 and the first square rod 52 are pushed forward by the action of the thread. Figure 3 When the first screw rod 53 rotates, the first square rod 52 is pushed to the right side by the action of the first screw rod 53 thread. Figure 3 The right side of the puncture tube 59 moves. Since the pitch of the first screw rod 53 is larger, the first square rod 52 moves quickly. The inner tube 521 on the first square rod 52 is smaller than the square groove 52. The first square rod 52 pushes the movable block 55 to move. The movable block 55 pushes the first gear 56 and the second screw rod 54 to move through magnetic force. The second screw rod 54 pushes the second square rod 58 to move. The second square rod 58 drives the puncture tube 59 to move. At this time, the puncture tube 59 does not contact the human body. Under the premise of ensuring safety, the puncture tube 59 moves quickly, which is conducive to reducing the operation time, reducing the patient's pain time, and improving the operation efficiency.

[0055] When the puncture tube 59 contacts the human body, the positive and negative poles of the current are changed, the magnetic pole directions of the electromagnet 554 are opposite, the electromagnet 554 and the gear ring 553 repel each other, the electromagnet 554 and the first gear 56 attract each other, and the first internal gear 551 is meshed with the first gear 56. At this time, the gear ring 553 and the second internal gear 552 are disengaged, and the movable block 55 slides out of the square groove 52. The electromagnet 554 is attracted to the third rod 555 at this time, and the end of the third rod 555 slides into the square hole 556 opened on the movable block 55. The electromagnet 554 drives the third rod 555 to slide out of the first screw rod 53. At this time, the rotation of the first screw rod 53 will drive the internal threaded tube 57 to rotate in the first square rod 52. At this time, the internal threaded tube 57 will not rotate. Figure 3The first screw rod 53 rotates to drive the third rod 555 to rotate, and the third rod 555 drives the movable block 55 to rotate. The movable block 55 drives the first gear 56 to rotate through the first internal gear 551, and the first gear 56 drives the second screw rod 54 to rotate. The second screw rod 54 pushes the second square rod 58 and the puncture tube 59 slowly toward the right side under the action of the thread. Figure 3 The puncture tube 59 moves to the right side of the spinal cord. At this time, the puncture tube 59 moves slowly, which is convenient for controlling the depth of the puncture tube 59 and preventing the puncture depth from being too large to damage the spinal cord.

Claims

1. A lumbar puncture imaging positioning device, characterized by: The invention comprises a mechanical arm (1), a positioning grid (2) and a support base (3) are fixedly connected to the mechanical arm (1), the positioning grid (2) is used to emit positioning warp and positioning weft, and a positioning component (4) and a puncture component (5) are fixedly connected to the support base (3); The positioning assembly (4) comprises a first telescopic rod (41) and a suction cup (42), wherein one end of the first telescopic rod (41) is fixedly connected to the support seat (3), and the other end of the first telescopic rod (41) is fixedly connected to the suction cup (42); The puncture assembly (5) comprises a fixed tube (51), a first square rod (52), a first screw rod (53), a second screw rod (54), a movable block (55), a first gear (56), an internally threaded tube (57), a second square rod (58) and a puncture tube (59), wherein the fixed tube (51) is fixedly connected to the support seat (3), the inner wall of the fixed tube (51) is slidably connected to the first square rod (52) and the second square rod (58), the first square rod (52) is provided with an inner tube (521) and a square groove (52), and the inner tube (521) is rotated The outer wall of the internal threaded tube (57) is movably connected, the inner wall of the internal threaded tube (57) is threadedly connected to the second screw rod (54), the inner wall of the square groove (522) is slidably connected to the movable block (55), and a first internal gear (551) is provided on one side of the movable block (55), the first internal gear (551) is meshedly connected to the first gear (56), the first gear (56) is fixedly connected to one end of the second screw rod (54), the other end of the second screw rod (54) is threadedly connected to one end of the second square rod (58), and the other end of the second square rod (58) is fixedly connected to the puncture tube (59).

2. The lumbar puncture imaging and positioning device according to claim 1, characterized in that: A second internal gear (552) is provided on the other side of the movable block (55), the second internal gear (552) is meshedly connected to a gear ring (553), and the gear ring (553) is fixedly connected to the internal threaded tube (57).

3. The lumbar puncture imaging and positioning device according to claim 1, characterized in that: The movable block (55) is fixedly connected to the electromagnet (554), and the movable block (55) is slidably connected to one end of the third rod (555), and the other end of the third rod (555) is slidably connected to the first screw rod (53).

4. The lumbar puncture imaging and positioning device according to claim 1, characterized in that: An accommodating cavity (33) is provided inside the support seat (3); the first screw rod (53) is rotatably connected to the inner wall of the sleeve (531); and the sleeve (531) is fixedly connected to the inner wall of the accommodating cavity (33).

5. The lumbar puncture imaging and positioning device according to claim 1, characterized in that: The first screw rod (53) is fixedly connected to the second gear (532), the second gear (532) is meshedly connected to the third gear (533), the axis of the third gear (533) is fixedly connected to the motor (534), the motor (534) is fixedly connected to the motor base (535), and the motor base (535) is fixedly connected to the inner wall of the accommodating chamber (33).

6. The lumbar puncture imaging and positioning device according to claim 1, characterized in that: The bottom of the first telescopic rod (41) is fixedly connected to the fixing block (411), the inner wall of the fixing block (411) is slidably connected to the baffle (412), and one end of the baffle (412) extends into the interior of the first telescopic rod (41).

7. The lumbar puncture imaging and positioning device according to claim 6, characterized in that: The other end of the baffle (412) is fixedly connected to the second telescopic rod (413), and the second telescopic rod (413) is fixedly connected to the inner wall of the accommodating cavity (33) via a mounting block (414).

8. The lumbar puncture imaging and positioning device according to claim 7, characterized in that: Four second telescopic rods (413) are provided, and the four second telescopic rods (413) are respectively located around the puncture tube (59), and each second telescopic rod (413) is respectively connected to the first trachea (415).

9. The lumbar puncture imaging and positioning device according to claim 8, characterized in that: The suction cup (42) is connected to one end of the second air pipe (416), the second air pipe (416) passes through the first telescopic rod (41), and the other end of the second air pipe (416) is connected to the second telescopic rod (413).

10. The lumbar puncture imaging and positioning device according to claim 1, characterized in that: The radial dimension of the inner wall of the fixed tube (51) is larger than that of the movable block (55).

Images