Lumbar puncture auxiliary positioning device

Abstract

The invention belongs to the technical field of medical instruments, and particularly relates to a lumbar puncture auxiliary positioning device which comprises a backrest plate, the lower end of the backrest plate is rotationally connected with a hip supporting plate, a pillow plate is fixedly mounted at the upper end of the backrest plate, an open groove is formed in the backrest plate, and a sliding groove is formed in the inner wall of one side of the open groove; a through groove is formed in the inner wall of the other side of the backrest plate in a penetrating mode, a first sliding plate is arranged in the sliding groove in a sliding mode, a second sliding plate is arranged in the through groove in a sliding mode, and the end of the second sliding plate is fixedly connected with a circular ring located on the outer side of the backrest plate. The hip joints, knee joints, the head and the neck of a patient are bent through the arrangement of the backrest plate and the hip supporting plate, then puncture points are conveniently found, adjustment of the puncture angle and depth is achieved through rotation of the rotating block and the threaded pipe, then a needle head can penetrate through the intervertebral space and enter the epidural space or the subarachnoid space, and a cerebrospinal fluid sample is rapidly obtained.

Description

Technical Field

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

[0002] When organic lesions occur in any part of the central nervous system, such as infection, inflammation, tumor, trauma, edema and obstruction, the composition of cerebrospinal fluid can be changed. Lumbar puncture can be used to collect cerebrospinal fluid for examination, which can provide a basis for the diagnosis, treatment and prognosis of the disease; lumbar puncture can also be used to inject drugs or perform internal and external drainage to treat the disease. Therefore, lumbar puncture is indispensable in clinical practice.

[0003] Medical staff assist in positioning the patient so that the back is in an arched state and the spine is protruded as far as possible, so that the puncture needle can pass through the lumbar intervertebral space into the subarachnoid space to extract cerebrospinal fluid; after searching, Chinese patent CN110559149B discloses a lumbar puncture auxiliary device, including a lifting bed, on which a knee clamping device, a hip clamping device, a leg clamping device, an inflatable pillow and a puncture positioning bracket are installed, wherein the lifting bed includes a bed frame crossbeam, four hydraulic lifting bed legs and a bed board, the four hydraulic lifting bed legs are connected to the bed frame crossbeam, and the bed board is installed on the bed. There is a gap on the left side of the bed board on the crossbeam, which is the working position of the medical staff; there are two notches on the lower part of the bed board; the knee clamping device, the hip clamping device and the leg clamping device can fix the patient's knees, hips and legs in turn, and the inflatable pillow can be adjusted according to the patient's needs after the patient puts it on; the hip screw drive and the knee screw drive are either manual turntable drives or motor drives, which can be adjusted according to the patient's physique; but in actual application, there are the following problems: the puncture needle cannot adjust the insertion depth and insertion angle, and thus the cerebrospinal fluid specimen cannot be accurately obtained. Summary of the invention

[0004] The purpose of the present invention is to provide a rice crust cutting device to solve the problems raised in the above background technology.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] The support plate is fixedly provided with a pillow plate at the upper end of the backrest plate, and a slot is provided on the backrest plate, and a sliding groove is provided on one inner wall of the slot, and a through groove is penetrated through the inner wall of the other side, and a slide plate is slidably arranged in the slide groove, and a slide plate 2 is slidably arranged in the through groove, and an end of the slide plate 2 is fixedly connected with a circular ring located on the outer side of the backrest plate, and a rotating shaft 1 and a rotating shaft 2 are respectively rotatably installed on one end of the slide plate 1 and the slide plate 2, and a rotating block is fixedly connected between the rotating shaft 1 and the rotating shaft 2, and an end of the rotating shaft 2 passes through the slide plate 2 and is fixedly connected with a rotating disk located in the circular ring, and a plurality of limiting openings are evenly distributed on the outer wall of the rotating disk, and a limiting rod matching the limiting openings is slidably inserted on the circular ring, and the upper end of the limiting rod is fixedly connected with the limiting disk, and a telescopic spring sleeved on the outer wall of the limiting rod is fixedly connected between the limiting disk and the outer wall of the circular ring;

[0007] The rotating block is provided with a threaded opening 1, the inner thread of the threaded opening 1 is connected with a threaded tube, a puncture opening is provided in the threaded tube, and the puncture opening includes a needle core opening at the front end and a needle tube opening at the end.

[0008] In the above-mentioned lumbar puncture auxiliary positioning device, the back side of the backrest plate is fixedly connected to the cylinder, a connecting rope is fixedly connected between the outer wall of the hip support plate and the outer wall of the piston end of the cylinder, and a limiting piece for the connecting rope to pass through is fixedly connected to the outer wall of the backrest plate.

[0009] In the above-mentioned lumbar puncture auxiliary positioning device, a plurality of threaded openings 2 connected to the slide grooves are provided on the outer wall of the backrest plate on the side away from the circular ring, and a fastener is threadedly connected in each of the threaded openings 2.

[0010] In the above-mentioned lumbar puncture auxiliary positioning device, a lever for driving the turntable to rotate is fixedly connected to the outer wall of the turntable.

[0011] In the above-mentioned lumbar puncture auxiliary positioning device, the backrest plate is curved, and the hip support plate is composed of two plate bodies with different curvatures.

[0012] In the above-mentioned lumbar puncture auxiliary positioning device, two leg wraps are fixedly connected to the outer wall of the hip support plate on one side away from the back support plate, and the leg wraps are made of elastic ropes.

[0013] Compared with the existing technology, the advantages of this lumbar puncture auxiliary positioning device are:

[0014] 1. The patient can sit in the device, or put the device sideways on the bedside. The patient enters the device in a side-lying position, with the back against the backrest board, the buttocks sitting in the hip support board, and the legs are bent and inserted into the leggings. The backrest board is bent so that the patient's back is also bent. The pillow board is set forward to push the patient's head to bend. The driving end of the oil cylinder extends out, and the hip support board is pulled to rotate through the connecting rope to make the legs bend and stabilize. Through the above work, the patient's hip joint, knee joint, head and neck are flexed, which makes it easier to find the puncture point;

[0015] 2. The medical staff then feels for the highest point of the bilateral iliac crests, and draws a straight line between the highest points of the bilateral iliac crests. The intersection of the straight line and the posterior midline is the 3rd-4th lumbar intervertebral space, which can be used as the puncture point. The position of the rotating block is adjusted by sliding to align the puncture port with the puncture point, and then the fastener at the corresponding position is screwed in to contact and tighten with the outer wall of the slide plate 1, completing the fixation of the positions of the slide plates 1 and 2, ensuring stability during the puncture process without the deviation of the puncture needle;

[0016] 3. By adjusting the angle of the rotating block, pull the limit plate upward to make the end of the limit rod disengage from the limit port, and turn the lever to rotate the rotating disk, the second rotating shaft and the rotating block. After the angle adjustment is completed, release the limit plate. Under the reverse elastic force of the telescopic spring, the limit rod moves downward and is inserted into the limit rod to complete the limit of the rotating disk, so that the angle of the rotating block is stable after rotation, and it is helpful for the needle to pass through the intervertebral space and enter the epidural or subarachnoid space;

[0017] 4. When the threaded tube rotates forward and backward, the end of the threaded tube is set close to or away from the patient's back. When the puncture needle is inserted into the puncture port, the needle core passes through the needle core port and is inserted into the patient's back until the end of the puncture needle contacts the end of the needle tube port. Since the diameter of the needle core port is small, the puncture needle cannot move further. Therefore, the puncture depth of the puncture needle can be adjusted as needed;

[0018] In summary, the present invention allows the patient's hip joint, knee joint, head and neck to bend by setting a backrest board and a hip support board, thereby facilitating the finding of the puncture point, and the rotation of the rotating block and the threaded tube allows the adjustment of the puncture angle and depth, thereby facilitating the needle to pass through the intervertebral space, enter the epidural or subarachnoid space, and quickly obtain cerebrospinal fluid samples. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural schematic diagram of one side of a lumbar puncture auxiliary positioning device proposed by the present invention;

[0020] Figure 2 This is a schematic structural diagram of the other side of a lumbar puncture auxiliary positioning device proposed by the present invention;

[0021] Figure 3This is a schematic diagram of the structure of a rotating disk in a lumbar puncture auxiliary positioning device proposed by the present invention;

[0022] Figure 4 The present invention provides a schematic cross-sectional structure diagram of a threaded tube in a lumbar puncture auxiliary positioning device.

[0023] In the figure: 1 backrest plate, 2 hip support plate, 3 pillow plate, 4 slot, 5 slide groove, 6 through groove, 7 slide plate one, 8 rotating block, 9 threaded tube, 10 needle tube mouth, 11 needle core mouth, 12 turntable, 13 ring, 14 lever, 15 limit plate, 16 telescopic spring, 17 fastener, 18 slide plate two, 19 leggings, 20 limit mouth, 21 limit piece, 22 oil cylinder. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0026] Reference Figure 1-Figure 4 A lumbar puncture auxiliary positioning device comprises a backrest board 1, which is bent, and a pillow board 3 is fixedly installed on the upper end of the backrest board 1. The hip support board 2 is composed of two sections of plates with different bending radians. The lower end of the backrest board 1 is rotatably connected with the hip support board 2. The backrest board 1, the hip support board 2 and the pillow board 3 are all made of a hard plate (steel plate, wooden plate) on the outside and a soft rubber plate on the inside of the hard plate. The soft rubber plate can avoid injuries induced by involuntary activities of the patient. The back of the backrest board 1 is fixedly connected with an oil cylinder 22, and a connecting rope is fixedly connected between the outer wall of the hip support board 2 and the outer wall of the piston end of the oil cylinder 22. The outer wall of the backrest board 1 is fixedly connected with a limiting member 21 for the connecting rope to pass through. Two leggings 19 are fixedly connected to the outer wall of the hip board 2 on one side away from the backrest board 1. The leggings 19 are made of elastic ropes. The patient can sit in the device or put the device sideways on the bed. The patient enters the device in a side-lying position, with the back against the backrest board 1 and the buttocks sitting in the hip support board 2. The legs are bent and inserted into the leggings 19. The backrest board 1 is bent so that the patient's back is also bent. The pillow board 3 is set forward to push the patient's head to bend. The driving end of the oil cylinder 22 extends out, and the hip support board 2 is pulled to rotate through the connecting rope to make the legs bend stably. Through the above work, the patient's hip joint, knee joint, head and neck are flexed, which makes it easier to find the puncture point.

[0027] The medical staff then feels for the highest point of the bilateral iliac crests, and draws a straight line between the highest points of the bilateral iliac crests. The intersection of the straight line and the posterior midline is the 3rd-4th lumbar intervertebral space, which can be used as the puncture point. The position of the rotating block 8 is slidably adjusted to align the puncture port with the puncture point, and then the fastener 17 at the corresponding position is screwed in to contact and tighten with the outer wall of the slide plate 1 7 to complete the fixation of the position of the slide plate 1 7 and the slide plate 2 18, ensuring stability during the puncture process without displacement of the puncture needle.

[0028] A slot 4 is provided on the backrest plate 1, a slide groove 5 is provided on the inner wall of one side of the slot 4, and a through slot 6 is penetrated through the inner wall of the other side, a slide plate 7 is slidably provided in the slide groove 5, a slide plate 2 18 is slidably provided in the through slot 6, and the end of the slide plate 2 18 is fixedly connected with a circular ring 13 located on the outer side of the backrest plate 1, and the ends of the slide plates 1 7 and 18 that are close to each other are rotatably installed with a rotating shaft 1 and a rotating shaft 2 respectively, and a rotating block 8 is fixedly connected between the rotating shaft 1 and the rotating shaft 2, and the end of the rotating shaft 2 passes through the slide plate 2 18 and is fixedly connected with a rotating disk 12 located in the circular ring 13, and a plurality of limiting openings 20 are evenly distributed on the outer wall of the rotating disk 12, and a limiting rod matching the limiting opening 20 is slidably inserted on the circular ring 13, and the upper end of the limiting rod is fixedly connected with the limiting disk 15, and the limiting disk 1 A telescopic spring 16 sleeved on the outer wall of the limit rod is fixedly connected between 5 and the outer wall of the ring 13, and a lever 14 for toggling the turntable 12 to rotate is fixedly connected to the outer wall of the turntable 12. When performing lumbar puncture, the puncture needle is slowly inserted in a direction perpendicular to the back with the right hand. During the needle insertion process, the needle tip is slightly moved toward the head to enter the epidural or subarachnoid space. At this time, it is necessary to adjust the angle of the rotating block 8, pull the limit plate 15 upward, so that the end of the limit rod is separated from the limit opening 20, and the lever 14 is toggled to rotate the turntable 12, the second shaft and the rotating block 8. After the angle adjustment is completed, the limit plate 15 is released. Under the reverse elastic force of the telescopic spring 16, the limit rod moves downward and is inserted into the limit rod, completing the limit of the turntable 12, so that the angle of the rotating block 8 is stable after rotation.

[0029] The rotating block 8 is provided with a threaded opening 1, the threaded opening 1 is internally threadedly connected to a threaded tube 9, a puncture opening is provided in the threaded tube 9, the puncture opening includes a needle core opening 11 at the front end and a needle tube opening 10 at the end, and a plurality of threaded openings 2 connected to the slide groove 5 are provided on the outer wall of the backrest plate 1 away from the ring 13, and a fastener 17 is threadedly connected in each threaded opening 2;

[0030] Adjustment of the puncture depth: the outer wall of the threaded tube 9 can be provided with a scale. When the threaded tube 9 is screwed forward, the end of the threaded tube 9 is arranged close to the patient's back. When the puncture needle is inserted into the puncture port, the needle core passes through the needle core opening 11 and is inserted into the patient's back until the end of the puncture needle contacts the end of the needle tube opening 10. Since the diameter of the needle core opening 11 is small, the puncture needle cannot continue to move. At this time, the insertion depth of the puncture needle is deeper; when the threaded tube 9 is screwed backward, the end of the threaded tube 9 is arranged away from the patient's back. When the puncture needle is inserted into the puncture port, the needle core passes through the needle core opening 11 and is inserted into the patient's back. Until the end of the puncture needle contacts the end of the needle tube opening 10, since the diameter of the needle core opening 11 is small, the puncture needle cannot continue to move. At this time, the insertion depth of the puncture needle is shallow; therefore, the puncture depth of the puncture needle can be adjusted as needed.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A lumbar puncture auxiliary positioning device, comprising a backrest plate (1), characterized in that: The lower end of the backrest board (1) is rotatably connected to a hip support board (2), and the upper end of the backrest board (1) is fixedly installed with a pillow board (3). The backrest board (1) is provided with a slot (4), and a slide groove (5) is provided on one inner wall of the slot (4), and a through groove (6) is provided through the other inner wall. A slide plate (7) is slidably arranged in the slide groove (5), and a slide plate (18) is slidably arranged in the through groove (6). The end of the slide plate (18) is fixedly connected to a circular ring (13) located outside the backrest board (1), and the ends of the slide plates (7) and (18) close to each other are divided into A rotating shaft 1 and a rotating shaft 2 are respectively rotatably installed, a rotating block (8) is fixedly connected between the rotating shaft 1 and the rotating shaft 2, the end of the rotating shaft 2 passes through the slide plate 2 (18) and is fixedly connected to a rotating disk (12) located in a circular ring (13), a plurality of limiting openings (20) are evenly distributed on the outer wall of the rotating disk (12), a limiting rod matching the limiting openings (20) is slidably inserted on the circular ring (13), the upper end of the limiting rod is fixedly connected to a limiting disk (15), and a telescopic spring (16) sleeved on the outer wall of the limiting rod is fixedly connected between the limiting disk (15) and the outer wall of the circular ring (13); The rotating block (8) is provided with a threaded opening 1, the threaded opening 1 is internally threadedly connected to a threaded tube (9), a puncture opening is provided in the threaded tube (9), and the puncture opening includes a needle core opening (11) at the front end and a needle tube opening (10) at the rear end.

2. A lumbar puncture auxiliary positioning device according to claim 1, characterized in that: The back side of the backrest plate (1) is fixedly connected to an oil cylinder (22), a connecting rope is fixedly connected between the outer wall of the hip support plate (2) and the outer wall of the piston end of the oil cylinder (22), and a limiting member (21) for the connecting rope to pass through is fixedly connected to the outer wall of the backrest plate (1).

3. The lumbar puncture auxiliary positioning device according to claim 1, characterized in that: A plurality of threaded openings (2) communicating with the slide grooves (5) are provided on the outer wall of the backrest plate (1) on the side away from the circular ring (13), and a fastener (17) is threadedly connected in each of the threaded openings (2).

4. The lumbar puncture auxiliary positioning device according to claim 1, characterized in that: The outer wall of the rotating disk (12) is fixedly connected with a lever (14) for driving the rotating disk (12) to rotate.

5. The lumbar puncture auxiliary positioning device according to claim 1, characterized in that: The backrest plate (1) is arranged in a curved shape, and the hip support plate (2) is composed of two plate bodies with different curvatures.

6. The lumbar puncture auxiliary positioning device according to claim 1, characterized in that: Two leg bands (19) are fixedly connected to the outer wall of the hip support plate (2) on one side away from the backrest plate (1), and the leg bands (19) are made of elastic ropes.

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