An orthopedic spinal puncture device

Abstract

This invention relates to a puncture device, and more particularly to an orthopedic spinal puncture device. The invention provides an orthopedic spinal puncture device with the function of injecting contrast agent. An orthopedic spinal puncture device includes a handle, a first connecting tube, a first needle tube, etc. The first connecting tube is connected to the rear side of the handle, and the first needle tube is connected to the rear end of the first connecting tube. By pulling a third sliding frame upward, a third spring is compressed, and then the third sliding frame disengages from a second sliding frame. This causes the second spring to return to its original position and move the second sliding frame backward. The second sliding frame then injects the contrast agent from the handle into the patient's body through the first connecting tube and the first needle tube, thus allowing for the injection of contrast agent into the patient's body with a simple operation.

Description

Technical Field

[0001] This invention relates to a puncture device, and more particularly to an orthopedic spinal puncture device. Background Technology

[0002] Spinal puncture, clinically known as lumbar puncture, involves taking cerebrospinal fluid to assess intracranial pressure during treatment. A contrast agent is then injected to allow doctors to observe the condition of the herniated disc.

[0003] According to patent application number CN202121238389.5, an orthopedic spinal puncture device includes a gripping cylinder with a hollow interior. A sleeve is installed through the front end of the gripping cylinder, and a puncture needle is inserted into the gripping cylinder through the sleeve. The puncture needle has a puncture cavity inside. Mounting grooves are formed on both sides of the outer circumference of the gripping cylinder. A triangular plate is fitted onto the outer circumference of the puncture needle inside the gripping cylinder. Sliding grooves are formed on both sides of the triangular plate. A pinch rod is rotatably mounted on one end of the gripping cylinder near the sleeve through the mounting groove. An outer rod is fixedly mounted on the inner side of the pinch rod corresponding to the sliding groove. An inner rod is inserted inside the outer rod, and a slider is fixedly mounted on one end of the inner rod. The inner rod matches the sliding groove through the slider. In use, this device reduces the labor intensity of doctors during frequent punctures and sampling, and its simple structure and convenient operation make it easy to use.

[0004] Although the aforementioned patent allows for puncture sampling by releasing the lever after puncture, and the triangular plate moving the puncture needle outward under the action of the first spring, and completing the puncture sampling through the barbed insertion end, it lacks the function of injecting contrast agent. Medical staff need to change to other instruments after sampling to inject the contrast agent. This requires medical staff to frequently change instruments to complete the sampling and contrast agent injection operations when treating patients, resulting in low work efficiency.

[0005] In order to solve the problems existing in the above-mentioned prior art, it is necessary to design an orthopedic spinal puncture device to achieve the effect of injecting contrast agent. Summary of the Invention

[0006] To overcome the shortcomings of current puncture devices that do not have the function of injecting contrast agents, the technical problem to be solved is to provide an orthopedic spinal puncture device with the function of injecting contrast agents.

[0007] The technical solution of the present invention is: an orthopedic spinal puncture device, comprising a handle, a first connecting tube, a first needle tube, a liquid aspiration mechanism and a liquid injection mechanism. The first connecting tube is connected to the rear side of the handle, the first needle tube is connected to the rear end of the first connecting tube, the liquid aspiration mechanism is provided on the outer wall of the first connecting tube, and the liquid injection mechanism is provided inside the handle.

[0008] In one embodiment, the liquid aspiration mechanism includes a liquid storage frame, a second connecting tube, a second needle tube, a one-way valve, a first sliding frame, a first spring, and a piston block. The outer wall of the first connecting tube is connected to the liquid storage frame. A one-way valve is installed at the bottom of the liquid storage frame. The top of the liquid storage frame is connected to the second connecting tube, which communicates with the liquid storage frame. The rear end of the second connecting tube is connected to the first needle tube, which is connected to the second needle tube. The first sliding frame is slidably connected to the upper inner side of the liquid storage frame, and the first sliding frame passes through the top of the liquid storage frame. The piston block is slidably connected to the upper inner side of the liquid storage frame, and the piston block is located below the first sliding frame. A first spring connects the piston block and the first sliding frame.

[0009] In one embodiment, the injection mechanism includes a second sliding frame, a second spring, a first fixing block, a third sliding frame, a third spring, and a plug. The second sliding frame is slidably connected to the inside of the handle and extends through the front wall of the handle. A second spring is connected between the second sliding frame and the handle and is sleeved on the second sliding frame. A plug is slidably connected to the inside of the upper side of the handle. A first fixing block is connected to the upper right side of the handle. A third sliding frame extends through the right side of the first fixing block and engages with the second sliding frame. A third spring is connected between the third sliding frame and the first fixing block and is sleeved on the third sliding frame.

[0010] In one embodiment, a limiting mechanism is also included, which includes a second fixed block, a threaded rod, and a rotating block. The second fixed block is connected to the upper left side of the handle, and the threaded rod passes through the second fixed block by threads. The rear end of the threaded rod is connected to the rotating block.

[0011] In one embodiment, a clamping mechanism is also included, which includes a rotating rod, a clamping block, and a torsion spring. Two rotating rods are rotatably passed through the upper part of the handle. The two rotating rods are arranged symmetrically from left to right. A torsion spring is connected between each of the two rotating rods and the handle. The two torsion springs are respectively sleeved on the two rotating rods. A clamping block is connected to each of the two rotating rods. The two clamping blocks are symmetrical from left to right.

[0012] In one embodiment, a positioning mechanism is also included. The positioning mechanism includes a connecting frame, a sliding rod, a fourth spring, a contact plate, and a wedge block. Two connecting frames are arranged symmetrically on the rear side of the first connecting tube. A sliding rod slides through one of the two connecting frames on opposite sides. A fourth spring is connected between each of the two sliding rods and the adjacent connecting frame. The two fourth springs are respectively sleeved on the two sliding rods. A wedge block is connected to the front end of the right sliding rod. A contact plate is connected between the rear ends of the two sliding rods. The first needle tube and the second needle tube slide through the contact plate.

[0013] In one embodiment, a feeding mechanism is also included, which includes a slider, a fifth spring and a fourth sliding frame. The slider is slidably connected to the front side of the liquid storage frame, and the fifth spring is connected between the slider and the handle. The fourth sliding frame is connected to the bottom of the slider, and the fourth sliding frame slides through the liquid storage frame and contacts the top of the one-way valve.

[0014] In one embodiment, the slider has a handle at the top.

[0015] The present invention has the following beneficial effects: 1. By pulling the third sliding frame upward, the third spring is compressed, and then the third sliding frame disengages from the second sliding frame, thereby the second spring resets and drives the second sliding frame to move backward. The second sliding frame then injects the contrast agent in the handle into the patient's body through the first connecting tube and the first needle tube. Thus, the contrast agent can be injected into the patient's body through a simple operation.

[0016] 2. By connecting the outlet of the container containing the contrast agent to the top of the handle, and then releasing the two clamping blocks, the torsion spring returns to its original position and drives the two clamping blocks to rotate in opposite directions via the two rotating rods. The two clamping blocks will then fix the container in place, thus continuously securing the container and effectively reducing manpower consumption.

[0017] 3. By pushing the slider backward, the slider causes the fourth sliding frame to move backward. After that, the fourth sliding frame no longer blocks the one-way valve, so the cerebrospinal fluid in the reservoir will enter the test tube through the one-way valve. This allows for control over the time when the cerebrospinal fluid is removed, and the cerebrospinal fluid will not immediately leak out of the reservoir. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0019] Figure 2 This is a partial three-dimensional structural schematic diagram of the present invention.

[0020] Figure 3 This is a three-dimensional structural diagram of the liquid extraction mechanism of the present invention.

[0021] Figure 4 This is a first partial cross-sectional view of the liquid extraction mechanism of the present invention.

[0022] Figure 5 This is a second partial cross-sectional view of the liquid extraction mechanism of the present invention.

[0023] Figure 6 This is a three-dimensional structural diagram of the liquid injection mechanism of the present invention.

[0024] Figure 7 This is a partial cross-sectional view of the liquid injection mechanism of the present invention.

[0025] Figure 8 This is a three-dimensional structural diagram of the limited-quantity mechanism of the present invention.

[0026] Figure 9 This is a three-dimensional structural diagram of the clamping mechanism of the present invention.

[0027] Figure 10 This is a three-dimensional structural diagram of the positioning mechanism of the present invention.

[0028] Figure 11 This is a partial three-dimensional structural diagram of the positioning mechanism of the present invention.

[0029] Figure 12 This is a three-dimensional structural diagram of the feeding mechanism of the present invention.

[0030] The diagram is labeled as follows: 1-Handle, 2-First connecting tube, 3-First needle tube, 4-Liquid extraction mechanism, 41-Liquid storage frame, 42-Second connecting tube, 421-Second needle tube, 43-One-way valve, 44-First sliding frame, 45-First spring, 46-Piston block, 5-Liquid injection mechanism, 51-Second sliding frame, 52-Second spring, 53-First fixing block, 54-Third sliding frame, 55-Third spring, 56-Plug, 6-Limiting mechanism, 61-Second fixing block, 62-Threaded rod, 63-Rotating block, 7-Clamping mechanism, 71-Rotating rod, 72-Clamping block, 73-Torsion spring, 8-Positioning mechanism, 81-Connecting frame, 82-Sliding rod, 83-Fourth spring, 84-Contact plate, 85-Wedge block, 9-Discharging mechanism, 91-Slider, 92-Fifth spring, 93-Fourth sliding frame. Detailed Implementation

[0031] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings. Detailed Implementation Method 1

[0033] Please see the following: An orthopedic spinal puncture device. Figure 1-7 It includes a handle 1, a first connecting tube 2, a first needle tube 3, a liquid extraction mechanism 4, and a liquid injection mechanism 5. The first connecting tube 2 is welded to the rear side of the handle 1, and the first needle tube 3 is connected to the rear end of the first connecting tube 2. The liquid extraction mechanism 4 is provided on the outer wall of the first connecting tube 2, and the liquid injection mechanism 5 is provided inside the handle 1.

[0034] Please check Figure 1 , Figure 3 , Figure 4 and Figure 5The liquid aspiration mechanism 4 includes a liquid storage frame 41, a second connecting pipe 42, a second needle tube 421, a one-way valve 43, a first sliding frame 44, a first spring 45, and a piston block 46. The outer wall of the first connecting pipe 2 is connected to the liquid storage frame 41. The one-way valve 43 is installed at the bottom of the liquid storage frame 41. The top of the liquid storage frame 41 is connected to the second connecting pipe 42, which is connected to the liquid storage frame 41. The rear end of the second connecting pipe 42 is connected to the first needle tube 3 via the second needle tube 421. The first sliding frame 44 is slidably connected to the upper inside of the liquid storage frame 41, and the first sliding frame 44 passes through the top of the liquid storage frame 41. The piston block 46 is slidably connected to the upper inside of the liquid storage frame 41, and the piston block 46 is located below the first sliding frame 44. The first spring 45 is connected between the piston block 46 and the first sliding frame 44.

[0035] Please check Figure 1 , Figure 6 and Figure 7 The injection mechanism 5 includes a second sliding frame 51, a second spring 52, a first fixing block 53, a third sliding frame 54, a third spring 55, and a plug 56. The second sliding frame 51 is slidably connected to the inside of the handle 1, and the second sliding frame 51 passes through the front wall of the handle 1. A second spring 52 is connected between the second sliding frame 51 and the handle 1, and the second spring 52 is fitted onto the second sliding frame 51. A plug 56 is slidably connected to the inside of the upper side of the handle 1. The first fixing block 53 is connected to the upper right side of the handle 1, and the third sliding frame 54 slides through the right side of the first fixing block 53. 4. The third sliding frame 54 is engaged with the second sliding frame 51. A third spring 55 is connected between the third sliding frame 54 and the first fixed block 53. The third spring 55 is sleeved on the third sliding frame 54. By pulling the third sliding frame 54 upward, the third sliding frame 54 disengages from the second sliding frame 51, thereby resetting the second spring 52 and driving the second sliding frame 51 to move backward and reset. The second sliding frame 51 then injects the contrast agent in the handle 1 into the patient's body through the first connecting tube 2 and the first needle tube 3, thus injecting the contrast agent into the patient's body.

[0036] Initially, the second spring 52 is in a stretched state. When a spinal puncture is required, the medical staff first pulls the plug 56 upwards and connects the outlet of the contrast agent container to the top of the handle 1. The contrast agent then enters the handle 1. The medical staff continuously holds the container of contrast agent. Once there is enough contrast agent in the handle 1, the container is removed from the handle 1, and the plug 56 is replaced. The medical staff then holds the handle 1 and aligns the first needle tube 3 and the second needle tube 421 with the site to be punctured. The device is then moved backwards using the handle 1, allowing the first needle tube 3 and the second needle tube 421 to penetrate the patient's body. After the needles are inserted into the patient's spine, medical staff hold the test tube below the one-way valve 43. Then, they pull the first sliding frame 44 upwards, causing the piston block 46 to move upwards via the first spring 45. Once the first sliding frame 44 reaches its upward limit, it is pushed downwards to reset, causing the piston block 46 to move downwards again via the first spring 45. This process of moving the piston block 46 up and down is repeated. Under the action of the one-way valve 43, air cannot enter the reservoir 41, allowing air inside the reservoir 41 to escape through the one-way valve 43. Therefore, the up-and-down movement of the piston block 46 creates a piston-like motion in the reservoir 41, thus allowing the second needle to... 421 will draw cerebrospinal fluid into the reservoir 41 through the second connecting tube 42. The cerebrospinal fluid in the reservoir 41 will then enter the test tube through the one-way valve 43. Once enough cerebrospinal fluid has been drawn, the piston block 46 will stop moving up and down, and the system will wait for all the cerebrospinal fluid in the reservoir 41 to enter the test tube. After all the cerebrospinal fluid in the reservoir 41 has been drained, the test tube can be removed. Then, the medical staff will pull the third sliding frame 54 upwards, compressing the third spring 55. Immediately afterward, the third sliding frame 54 will disengage from the second sliding frame 51, causing the second spring 52 to reset and move the second sliding frame 51 backwards. The second sliding frame 51 will then release the contrast agent in the handle 1 through the first connecting tube 2 and the first... After the needle 3 is inserted into the patient's body, the medical staff releases the third sliding frame 54, the third spring 55 resets, and moves the third sliding frame 54 downwards to reset. Finally, the medical staff pulls the device forward out of the patient's body using the handle 1. Then, the second sliding frame 51 is pulled forward, the second spring 52 is stretched, and the forward movement of the second sliding frame 51 will compress the third sliding frame 54 upwards, compressing the third spring 55. Subsequently, as the second sliding frame 51 continues to move forward, it no longer compresses the third sliding frame 54, thus the third spring 55 resets and moves the third sliding frame 54 downwards to reset. At this point, the medical staff releases the second sliding frame 51, and the device can be used. Detailed Implementation Method 2

[0038] Based on Specific Implementation Method 1, please refer to Figure 1 and Figure 8 It also includes a limiting mechanism 6, which includes a second fixed block 61, a threaded rod 62 and a rotating block 63. The second fixed block 61 is welded to the upper left side of the handle 1. The threaded rod 62 is threaded through the second fixed block 61. The rear end of the threaded rod 62 is connected to the rotating block 63 by welding.

[0039] Initially, the second spring 52 is in a stretched state. Rotating the threaded rod 62 via the rotating block 63 causes the threaded rod 62 to rotate, which in turn moves the rotating block 63 backward. Once the threaded rod 62 reaches the desired position, the rotating block 63 stops rotating, and the third sliding frame 54 is pulled upward, compressing the third spring 55. Immediately afterward, the third sliding frame 54 disengages from the second sliding frame 51, causing the second spring 52 to reset and move the second sliding frame 51 backward. The second sliding frame 51 then injects the contrast agent from the handle 1 into the patient's body through the first connecting tube 2 and the first needle tube 3. During the backward movement of the second sliding frame 51, it is stopped by the front end of the threaded rod 62, thus limiting the backward movement of the second sliding frame 51 and controlling the amount of contrast agent injected into the patient. After the medical staff releases the third sliding frame 54, the third spring 55 resets and moves the third sliding frame 54 downwards to reset. When the device is no longer needed, the medical staff pulls the second sliding frame 51 forward, stretching the second spring 52. The forward movement of the second sliding frame 51 will compress the third sliding frame 54 upwards, compressing the third spring 55. Subsequently, as the second sliding frame 51 continues to move forward, it no longer compresses the third sliding frame 54, thus the third spring 55 resets and moves the third sliding frame 54 downwards to reset. At this point, the medical staff can release the second sliding frame 51. When it is necessary to move the threaded rod 62 forward, the threaded rod 62 is rotated in the opposite direction by the rotating block 63. Under the action of the threaded engagement between the threaded rod 62 and the second fixed block 61, the reverse rotation of the threaded rod 62 will drive the rotating block 63 to move forward together. When the threaded rod 62 moves forward to the appropriate position, the rotation of the rotating block 63 is stopped. Detailed Implementation Method 3

[0041] Based on specific implementation method 2, please refer to Figure 1 and Figure 9It also includes a clamping mechanism 7, which includes a rotating rod 71, a clamping block 72, and a torsion spring 73. Two rotating rods 71 ​​are rotatably connected to the upper part of the handle 1. The two rotating rods 71 ​​are arranged symmetrically from left to right. A torsion spring 73 is connected between each of the two rotating rods 71 ​​and the handle 1. The two torsion springs 73 are respectively sleeved on the two rotating rods 71. A clamping block 72 is welded to each of the two rotating rods 71. The two clamping blocks 72 are symmetrical from left to right.

[0042] When contrast agent needs to be injected into the handle 1, the medical staff first pinches the lower side of the two clamping blocks 72 and applies force to them inward. The two clamping blocks 72 then rotate in opposite directions to open, causing the two clamping blocks 72 to rotate together with the two rotating rods 71. The torsion spring 73 deforms. The medical staff then pulls the stopper 56 upward and connects the outlet of the container containing the contrast agent to the top of the handle 1. Afterward, the two clamping blocks 72 are released, and the torsion spring 73 returns to its original position, causing the two rotating rods 71 ​​to rotate the two clamping blocks 72 in opposite directions to reset. The two clamping blocks 72 then clamp the neck of the container, thus eliminating the need for the medical staff to continuously support the container containing the contrast agent. The container for the contrast agent is secured. Once there is enough contrast agent in the handle 1, the medical staff pinches the lower side of the two clamping blocks 72 and applies force to them inward. The two clamping blocks 72 then rotate in opposite directions, loosening the neck of the container. The two clamping blocks 72 then drive the two rotating rods 71 ​​to rotate together, causing the torsion spring 73 to deform. Afterward, the medical staff removes the container, inserts the stopper 56 back onto the handle 1, and connects the outlet of the container containing the contrast agent to the top of the handle 1. Finally, the two clamping blocks 72 are released, the torsion spring 73 returns to its original position, and the two rotating rods 71 ​​drive the two clamping blocks 72 to rotate in opposite directions to return to their original position. Detailed Implementation Method 4

[0044] Based on implementation method 3, please refer to Figure 1 , Figure 10 and Figure 11 It also includes a positioning mechanism 8, which includes a connecting frame 81, a sliding rod 82, a fourth spring 83, a contact plate 84, and a wedge block 85. Two connecting frames 81 are symmetrically arranged on the rear side of the first connecting tube 2. A sliding rod 82 slides through the two connecting frames 81 on opposite sides. A fourth spring 83 is connected between each of the two sliding rods 82 and the adjacent connecting frame 81. The two fourth springs 83 are respectively sleeved on the two sliding rods 82. A wedge block 85 is welded to the front end of the right sliding rod 82. A contact plate 84 is connected between the rear ends of the two sliding rods 82. The first needle tube 3 and the second needle tube 421 slide through the contact plate 84.

[0045] When a puncture is required on a patient and no contrast agent is needed, initially, the second spring 52 is stretched. First, the medical staff pulls the plug 56 upwards, then holds the handle 1 and aligns the first needle tube 3 and the second needle tube 421 with the puncture site. The device is then moved backwards using the handle 1. The contact plate 84 then contacts the patient's skin, and the first needle tube 3 and the second needle tube 421 pierce the patient's skin. As the device continues to move backwards, the contact plate 84, the two sliding rods 82, and the wedge block 85 remain stationary. Under the continuous backward movement of the device, the fourth spring 83 is stretched. Then, as the device moves backwards, the wedge block 85 contacts the third sliding frame 54 and... The third sliding frame 54 is pressed upwards, and the third spring 55 is compressed. Immediately afterwards, the third sliding frame 54 disengages from the second sliding frame 51, causing the second spring 52 to reset and move the second sliding frame 51 to the right. Simultaneously, the third sliding frame 54 continues to move backwards and is no longer pressed upwards by the wedge block 85. This causes the third spring 55 to reset and move the third sliding frame 54 downwards. This ensures that during puncture, the first needle tube 3 and the second needle tube 421 can move stably backwards without wobbling, allowing the device to perform puncture operations normally. Medical personnel can then perform subsequent procedures. When the device is no longer needed, the second sliding frame 51 is pulled forward, stretching the second spring 52. The forward movement of the second sliding frame 51 will compress the third sliding frame 54 upwards, thus compressing the third spring 55. Subsequently, as the second sliding frame 51 continues to move forward, it will no longer compress the third sliding frame 54, causing the third spring 55 to reset and drive the third sliding frame 54 to move downwards. At this point, the medical staff releases the second sliding frame 51, then inserts the plug 56 back onto the handle 1, and finally pulls the device forward using the handle 1. The first needle tube 3 and the second needle tube 421 will both be removed from the patient's body, and the fourth spring 83 will reset. When the fourth spring 83 has fully reset, the forward movement of the device will drive the two sliding rods 82 forward via the fourth spring 83. The two sliding rods 82 will then drive the contact plate 84 forward. When it is necessary to perform surgery on the patient... When performing a puncture procedure and injecting contrast agent, the medical staff first injects the contrast agent into the handle 1, then holds the handle 1 and aligns the first needle tube 3 and the second needle tube 421 with the site to be punctured. The device is then moved backward using the handle 1, causing the contact plate 84 to contact the patient's skin, and the first needle tube 3 and the second needle tube 421 to pierce the patient's skin. As the device continues to move backward, the contact plate 84, the two sliding rods 82, and the wedge block 85 remain stationary. Under the continuous backward movement of the device, the fourth spring 83 is stretched. Subsequently, as the device moves backward, the wedge block 85 contacts the third sliding frame 54, pressing the third sliding frame 54 upward, and the third spring 55 is compressed.Immediately afterwards, the third sliding frame 54 disengages from the second sliding frame 51, causing the second spring 52 to reset and move the second sliding frame 51 to the right. The second sliding frame 51 then injects the contrast agent from the handle 1 into the patient's body through the first connecting tube 2 and the first needle tube 3. Simultaneously, the third sliding frame 54 continues to move backward and is no longer squeezed upward by the wedge block 85. This causes the third spring 55 to reset and move the third sliding frame 54 downward. This ensures that during puncture, the first needle tube 3 and the second needle tube 421 can move stably backward without wobbling, allowing the device to perform puncture operations normally. Medical personnel can then perform subsequent procedures. When the device is no longer needed, pulling the second sliding frame 51 forward stretches the second spring 52. The forward movement of the second sliding frame 51 compresses the third sliding frame 54 upwards, thus compressing the third spring 55. Subsequently, as the second sliding frame 51 continues to move forward, it no longer compresses the third sliding frame 54, causing the third spring 55 to reset and pull the third sliding frame 54 downwards. At this point, the medical staff releases the second sliding frame 51 and pulls the device forward using the handle 1. Both the first needle tube 3 and the second needle tube 421 are removed from the patient's body, and the fourth spring 83 resets. Once the fourth spring 83 has fully reset, the forward movement of the device, via the fourth spring 83, moves the two sliding rods 82 forward. The two sliding rods 82 then move the contact plate 84 forward, thus automatically injecting the contrast fluid into the patient's body after both the first needle tube 3 and the second needle tube 421 are inserted into the spine. Detailed Implementation Method 5

[0047] Based on implementation method 4, please refer to Figure 1 and Figure 12 It also includes a feeding mechanism 9, which includes a slider 91, a fifth spring 92 and a fourth sliding frame 93. The slider 91 is slidably connected to the front side of the liquid storage frame 41. The top of the slider 91 is provided with a handle, which makes it easy for the operator to push the slider 91 backward. The fifth spring 92 is connected between the slider 91 and the handle 1. The bottom of the slider 91 is connected to the fourth sliding frame 93 by welding. The fourth sliding frame 93 slides through the liquid storage frame 41 and contacts the top of the one-way valve 43.

[0048] When cerebrospinal fluid is drawn into the reservoir 41 and needs to be removed, medical staff hold the test tube under the one-way valve 43 and push the slider 91 backward. The slider 91 then moves the fourth sliding frame 93 backward, stretching the fifth spring 92. After that, the fourth sliding frame 93 no longer blocks the one-way valve 43, allowing the cerebrospinal fluid in the reservoir 41 to enter the test tube through the one-way valve 43. Once all the cerebrospinal fluid in the reservoir 41 has been drained, the slider 91 is released, the fifth spring 92 resets, and the slider 91 moves the fourth sliding frame 93 forward to reset. The fourth sliding frame 93 then blocks the one-way valve 43. Finally, the test tube can be removed. In this way, the time for removing cerebrospinal fluid can be controlled at will, and the cerebrospinal fluid will not immediately leak from the reservoir 41.

[0049] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An orthopedic spinal puncture device, comprising a handle (1), a first connecting tube (2), and a first needle tube (3), wherein the first connecting tube (2) is connected to the rear side of the handle (1), and the first needle tube (3) is connected to the rear end of the first connecting tube (2), characterized in that: It also includes a liquid extraction mechanism (4) and a liquid injection mechanism (5). The outer wall of the first connecting tube (2) is provided with a liquid extraction mechanism (4) for extracting cerebrospinal fluid, and the inside of the handle (1) is provided with a liquid injection mechanism (5) for injecting contrast agent. The liquid extraction mechanism (4) includes a liquid storage frame (41), a second connecting pipe (42), a second needle tube (421), a one-way valve (43), a first sliding frame (44), a first spring (45), and a piston block (46). The outer wall of the first connecting pipe (2) is connected to the liquid storage frame (41). The bottom of the liquid storage frame (41) is equipped with a one-way valve (43). The top of the liquid storage frame (41) is connected to the second connecting pipe (42). The second connecting pipe (42) is connected to the liquid storage frame (41). The rear of the second connecting pipe (42) A second needle tube (421) is connected between the end and the first needle tube (3). A first sliding frame (44) is slidably connected to the upper inside of the liquid storage frame (41). The first sliding frame (44) passes through the top of the liquid storage frame (41). A piston block (46) for piston movement of the liquid storage frame (41) is slidably connected to the upper inside of the liquid storage frame (41). The piston block (46) is located below the first sliding frame (44). A first spring (45) is connected between the piston block (46) and the first sliding frame (44). The liquid injection mechanism (5) includes a second sliding frame (51), a second spring (52), a first fixing block (53), a third sliding frame (54), a third spring (55), and a plug (56). The second sliding frame (51) is slidably connected inside the handle (1). The second sliding frame (51) passes through the front wall of the handle (1). The second spring (52) is connected between the second sliding frame (51) and the handle (1). The second spring (52) is sleeved on the second sliding frame (51). The plug (56) for sealing the handle (1) is slidably connected inside the upper side of the handle (1). The first fixing block (53) is connected to the upper right side of the handle (1). The third sliding frame (54) is slidably passed through the right side of the first fixing block (53). The third sliding frame (54) is engaged with the second sliding frame (51). The third spring (55) is connected between the third sliding frame (54) and the first fixing block (53). The third spring (55) is sleeved on the third sliding frame (54).

2. The orthopedic spinal puncture device as described in claim 1, characterized in that: It also includes a limiting mechanism (6) for limiting the amount of contrast agent injected. The limiting mechanism (6) includes a second fixed block (61), a threaded rod (62) and a rotating block (63). The second fixed block (61) is connected to the upper left side of the handle (1). The threaded rod (62) is threaded through the second fixed block (61). The rear end of the threaded rod (62) is connected to the rotating block (63) for rotating the threaded rod (62).

3. The orthopedic spinal puncture device as described in claim 2, characterized in that: It also includes a clamping mechanism (7) for clamping the bottleneck of the container containing the contrast agent. The clamping mechanism (7) includes a rotating rod (71), a clamping block (72) and a torsion spring (73). The upper part of the handle (1) has two rotating rods (71) rotating through it. The two rotating rods (71) are arranged symmetrically on the left and right. A torsion spring (73) is connected between the two rotating rods (71) and the handle (1). The two torsion springs (73) are respectively sleeved on the two rotating rods (71). A clamping block (72) is connected to the two rotating rods (71). The two clamping blocks (72) are symmetrical on the left and right.

4. The orthopedic spinal puncture device as described in claim 3, characterized in that: It also includes a positioning mechanism (8), which includes a connecting frame (81), a sliding rod (82), a fourth spring (83), a contact plate (84), and a wedge block (85). The rear side of the first connecting tube (2) is symmetrically provided with two connecting frames (81). The sliding rod (82) slides through the two connecting frames (81) on opposite sides. The two sliding rods (82) are connected to the adjacent connecting frame (81) with a fourth spring (83). The two fourth springs (83) are respectively sleeved on the two sliding rods (82). The front end of the right sliding rod (82) is connected to a wedge block (85). The rear ends of the two sliding rods (82) are connected to a contact plate (84). The first needle tube (3) and the second needle tube (421) slide through the contact plate (84).

5. The orthopedic spinal puncture device as described in claim 4, characterized in that: It also includes a feeding mechanism (9), which includes a slider (91), a fifth spring (92) and a fourth sliding frame (93). The front side of the liquid storage frame (41) is slidably connected to the slider (91), and the fifth spring (92) is connected between the slider (91) and the handle (1). The bottom of the slider (91) is connected to the fourth sliding frame (93) for blocking the one-way valve (43). The fourth sliding frame (93) slides through the liquid storage frame (41), and the fourth sliding frame (93) contacts and cooperates with the top of the one-way valve (43).

6. The orthopedic spinal puncture device as described in claim 5, characterized in that: The slider (91) has a handle on top.

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