Lumbar puncture device for injecting chemotherapeutic drugs

Abstract

The lumbar puncture device comprises a bottom plate, a vertical plate is arranged on one side of the bottom plate, a connector part is arranged on the vertical plate and can be connected with a puncture structure, a hose is arranged on one side of the connector part, and one end of the hose is connected with a multi-stage pressure measuring structure; the puncture structure comprises a clamping head, a puncture needle body with the end closed is arranged on one side of the clamping head, multiple sets of flow guide holes are formed in the end and the side face of the puncture needle body, and a color changing prompt assembly is further arranged on one side of the puncture needle body. A medicine injection structure is further arranged on one side of the bottom plate and can be connected with the multi-stage pressure measuring structure, the flow velocity of cerebrospinal fluid can be reduced, and the symptoms of headache, nausea and vomiting caused by reduction of intracranial pressure of a patient are relieved; cerebrospinal fluid can be rapidly detected, and the success rate of lumbar puncture is increased; chemotherapeutic drugs can be injected in the sheath at a constant speed, so that more convenience is brought to an operator, and more convenience is brought to single-person operation; meanwhile, the discomfort of intrathecal injection of a patient can be relieved.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and in particular relates to a lumbar puncture device for injecting chemotherapy drugs. Background Art

[0002] Lumbar puncture is a commonly used clinical diagnostic and therapeutic procedure used to diagnose various central nervous system lesions and to drain cerebrospinal fluid due to excessive cerebrospinal fluid pressure and inject drugs to treat central nervous system diseases.

[0003] As disclosed in the invention with announcement number CN116473635A, a device for lumbar puncture relates to the field of puncture tools. The technical solution of the present invention includes a handle and a needle; the handle is provided with a handle cavity, and the handle cavity includes a first valve cavity section, a second valve cavity section and a third valve cavity section from front to back; the side wall of the first valve cavity section is provided with a pressure measuring hole, the second valve cavity section is provided with a drainage hole downward, and the third valve cavity section is provided with a control hole, and the control hole is plug-fitted with the syringe nipple; a valve core is slidably fitted in the handle cavity, and the length of the valve core can simultaneously block the pressure measuring hole and the drainage hole; the needle is provided with a tubular cavity, the rear end of the needle is fixed to the handle, and the rear end of the tubular cavity is connected to the front end of the handle cavity. During the pressure measurement process of this scheme, the cerebrospinal fluid is always in the handle cavity or the lumen, and there will be no obvious waste. When the above-mentioned needle is puncturing, it is impossible to promptly determine whether the puncture is successful. At the same time, after the cerebrospinal fluid is sampled, it is impossible to quickly connect with syringes of different specifications, and it is impossible to inject chemotherapy drugs at a uniform speed. Moreover, two people are required to operate it, which increases manpower and makes the overall operation inconvenient. For this reason, we propose a lumbar puncture device for injecting chemotherapy drugs. Summary of the invention

[0004] The object of the present invention is to provide a lumbar puncture device for injecting chemotherapy drugs, so as to solve the problems that the existing needle mentioned in the above background technology cannot judge whether the puncture is successful in time during puncture, and cannot be quickly connected with syringes of different specifications after cerebrospinal fluid sampling, and chemotherapy drugs cannot be injected at a uniform speed, and two people are required to operate, which increases manpower and makes the overall operation inconvenient.

[0005] To achieve the above object, the present invention provides the following technical solution: a lumbar puncture device for injecting chemotherapy drugs, comprising a bottom plate, a vertical plate arranged on one side of the bottom plate, a joint portion arranged on the vertical plate, the joint portion being connectable to a puncture structure, a hose arranged on one side of the joint portion, one end of the hose being connected to a multi-stage pressure measuring structure for measuring the pressure of cerebrospinal fluid;

[0006] The puncture structure comprises a card connector, a puncture needle body with a closed end is arranged on one side of the card connector, and a color change prompt component is also arranged on one side of the puncture needle body;

[0007] The color-changing prompt component includes a bearing sleeve, which is arranged on one side of the puncture needle body, a cavity is arranged in the bearing sleeve, and a color-changing material that changes color when in contact with cerebrospinal fluid is arranged in the cavity, and an overflow hole connected to the cavity is also arranged on the puncture needle body, which can drain cerebrospinal fluid into the cavity, so as to facilitate rapid contact between the cerebrospinal fluid and the color-changing material;

[0008] Among them, a drug injection structure is also arranged on one side of the bottom plate, and the drug injection structure can be connected to the multi-stage pressure measuring structure, and an adsorption structure is also arranged on the vertical plate.

[0009] Preferably, a plurality of groups of guide holes are provided at the end and side of the puncture needle body, which can reduce the flow rate of cerebrospinal fluid and avoid the discomfort of the patient caused by excessive flow of cerebrospinal fluid.

[0010] Preferably, a groove body is further provided on one side of the cavity, a sealing sleeve is provided in the groove body, a cross bar is provided on one side of the sealing sleeve, and a ring is provided at one end of the cross bar, which can seal the overflow hole, facilitate rapid diversion of cerebrospinal fluid, and avoid the situation where the cerebrospinal fluid is absorbed by too much color-changing material.

[0011] Preferably, the multi-stage pressure measuring structure includes a front pressure measuring tube, a middle pressure measuring tube and a rear pressure measuring tube. The front pressure measuring tube is connected to a hose, the middle pressure measuring tube is telescopically arranged in the front pressure measuring tube, and the rear pressure measuring tube is telescopically arranged in the middle pressure measuring tube, so that the middle pressure measuring tube and the rear pressure measuring tube can be stretched to facilitate the measurement of cerebrospinal fluid pressure.

[0012] Preferably, a front limit buckle is provided on one side of the inner wall of the front pressure measuring tube, one end of the front limit buckle is slidably provided in the front limit groove, and the front limit groove is provided on the outer surface of the middle pressure measuring tube; a rear limit buckle is provided on one side of the inner wall of the middle pressure measuring tube, one end of the rear limit buckle is slidably provided in the rear limit groove, and the rear limit groove is provided on the outer surface of the rear pressure measuring tube, which can limit the movement of the middle pressure measuring tube and the rear pressure measuring tube.

[0013] Preferably, a joint seat is also provided at the end of the rear pressure measuring tube, a damping ball is rotatably arranged in the joint seat, a liquid outlet connected to the rear pressure measuring tube is provided in the middle of the joint seat, an infusion channel corresponding to the liquid outlet is provided in the middle of the damping sphere, and a syringe connector is provided on the other side of the damping sphere, which can be connected to syringes of different specifications.

[0014] Preferably, a positioning bayonet is provided on the upper part of the joint seat, an arc-shaped limit groove is provided on one side of the outer surface of the damping sphere, an arc-shaped limit block is movably provided in the arc-shaped limit groove, and the arc-shaped limit block is connected to the joint seat. The opening and closing of the liquid outlet can be controlled by adjusting the angle of the damping sphere.

[0015] Preferably, the drug injection structure includes a syringe carrier, which is movably arranged on one side of the base plate, an adjustment block is arranged at the bottom of the syringe carrier, the adjustment block is movably arranged in an adjustment groove, the adjustment groove is arranged on the base plate, the adjustment block is positioned and fixed in the adjustment groove by a snap-fit ​​assembly, and a uniform speed drug feeding assembly is also arranged on one side of the syringe carrier.

[0016] Preferably, the uniform speed drug feeding component includes a transverse plate, which is arranged on one side of the syringe carrier plate, and a mounting groove is arranged on the transverse plate. A transverse screw rod is rotatably arranged in the mounting groove, a nut seat is arranged on the transverse screw rod, and the nut seat is connected to the stepping seat. A handle cap positioning groove is arranged on the stepping seat, and a driving component for controlling the rotation of the transverse screw rod is also arranged on the syringe carrier plate, so that the chemotherapy drugs in the syringe can be injected into the patient's body at a uniform speed.

[0017] Preferably, the buckle assembly includes a rotating shaft, which is rotatably arranged on one side of the adjusting block, and torsion springs are sleeved on both ends of the rotating shaft. A driving rod is arranged on one side of the outer surface of the rotating shaft, and the driving rod is movably arranged in an upper groove. A connecting rod is arranged on the other side of the outer surface of the rotating shaft, and a positioning buckle is arranged on the connecting rod, and the positioning buckle is arranged in a positioning card slot. The positioning card slots are evenly arranged on both sides of the adjusting slot, and the connecting rod is movably arranged in a lower groove, and the lower groove is arranged on one side of the adjusting block, so as to adjust the position of the syringe carrier to meet the carrying needs of syringes of different specifications.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] (1) After puncture, the present application can reduce the flow rate of cerebrospinal fluid, thereby avoiding the discomfort of the patient caused by excessive cerebrospinal fluid flow. At the same time, after puncture, the puncture results can be quickly displayed, making it easy to know whether the puncture is successful, thereby improving the success rate of puncture.

[0020] (2) The present application does not require disassembly of the pressure measuring device before injecting the chemotherapy drug, which reduces the operating procedures and facilitates single-person operation.

[0021] (3) The present application can be connected to syringes of different specifications and can inject intrathecal chemotherapy drugs at a uniform speed, thereby improving the patient's comfort during the injection of intrathecal chemotherapy drugs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the structure of the puncture structure in the present invention;

[0024] Figure 3 for Figure 2A schematic diagram of the enlarged structure at A in the middle;

[0025] Figure 4 It is a half-section structural schematic diagram of the color-changing prompt component in the present invention;

[0026] Figure 5 for Figure 4 A schematic diagram of the enlarged structure at B in the middle;

[0027] Figure 6 A half-section schematic diagram of the multi-stage pressure measuring structure of the present invention;

[0028] Figure 7 for Figure 6 Schematic diagram of the enlarged structure at C in the middle;

[0029] Figure 8 for Figure 6 Schematic diagram of the enlarged structure at D in the middle;

[0030] Fig. 9 It is a schematic diagram of the main cross-sectional structure of the connector seat in the present invention in a connected state of the liquid outlet;

[0031] Fig.10 It is a schematic diagram of the front cross-sectional structure of the joint seat in the present invention in a closed state of the liquid outlet;

[0032] Fig.11 It is a structural schematic diagram of the multi-stage pressure measuring structure in the present invention when it is used;

[0033] Fig.12 This is a schematic diagram of the structure when the multi-stage pressure measuring structure of the present invention is not in use;

[0034] Fig.13 It is a structural schematic diagram of the multi-stage pressure measuring structure in the present invention when it is connected to the syringe;

[0035] Fig.14 It is a half-section structural schematic diagram of the drug injection structure in the present invention;

[0036] Fig.15 for Fig.14 Schematic diagram of the enlarged structure at E in the middle;

[0037] Fig.16 It is a schematic diagram of the half-section structure of the uniform speed medicine feeding component in the present invention;

[0038] Fig.17 It is a schematic diagram of the left cross-sectional structure of the drug injection structure of the present invention;

[0039] Fig.18 for Fig.17 The enlarged structural diagram at F in the middle;

[0040] Fig.19It is a structural schematic diagram of the adsorption structure in the present invention;

[0041] In the figure: 1. puncture structure; 2. bottom plate; 3. support frame; 4. injection structure; 5. multi-stage pressure measurement structure; 6. hose; 7. pipe clamp; 8. joint; 9. vertical plate; 11. puncture needle body; 12. color change prompt component; 13. clamp joint; 14. guide hole; 91. guide hole; 92. first guide rod; 93. first suction cup; 94. second suction cup; 95. second guide rod; 96. connecting bracket; 121. bearing sleeve; 122. observation window; 123. cross bar; 124. collar; 125. color change material; 126. overflow hole; 127. slot body; 128. sealing sleeve; 401. stepping seat; 402. cross plate; 403. syringe carrier; 404. adjustment block; 405. adjustment slot; 406. transverse screw; 407. worm ;408, installation cavity;409, worm gear;410, installation groove;411, handle cap positioning groove;412, nut seat;413, reduction motor;414, upper groove;415, drive rod;416, snap button;417, torsion spring;418, rotating shaft;419, lower groove;420, connecting rod;421, positioning slot;422, positioning buckle;423, accommodating slot;501, front pressure measuring tube;502, middle pressure measuring tube;503, rear pressure measuring tube;504, front limit buckle;505, front limit slot;506, rear limit buckle;507, rear limit slot;508, connector seat;509, liquid outlet;510, arc limit slot;511, positioning bayonet;512, infusion channel;513, syringe connector;514, damping ball. DETAILED DESCRIPTION

[0042] 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.

[0043] See also Figure 1-Figure 5 The present invention provides a technical solution: a lumbar puncture device for injecting chemotherapy drugs, comprising a bottom plate 2, a vertical plate 9 is arranged on one side of the bottom plate 2, a joint part 8 is arranged on the vertical plate 9, the joint part 8 can be connected to the puncture structure 1, a hose 6 is arranged on one side of the joint part 8, and the angle of the multi-stage pressure measuring structure 5 can be adjusted by setting the hose 6;

[0044] The puncture structure 1 includes a card connector 13, and a puncture needle body 11 with a closed end is arranged on one side of the card connector 13. A plurality of groups of guide holes 14 are arranged on the end and side of the puncture needle body 11. Through the arrangement of the plurality of groups of guide holes 14, the cerebrospinal fluid can be dispersed and guided, thereby reducing the guide speed of the cerebrospinal fluid, and relieving the patient's headache, nausea, and vomiting symptoms caused by reduced intracranial pressure. A color-changing prompt component 12 is also arranged on one side of the puncture needle body 11.

[0045] The color-changing prompt component 12 includes a supporting sleeve 121, which is arranged on one side of the puncture needle body 11. A cavity is arranged in the supporting sleeve 121, and a color-changing material 125 that changes color when it comes into contact with cerebrospinal fluid is arranged in the cavity. An overflow hole 126 connected to the cavity is also arranged on the puncture needle body 11, which can drain the cerebrospinal fluid into the cavity, facilitating rapid contact between the cerebrospinal fluid and the color-changing material 125.

[0046] First, the lumbar vertebra is punctured through the puncture needle body 11. After puncturing into the subarachnoid space, the cerebrospinal fluid decelerates and flows into the puncture needle body 11 through multiple groups of guide holes 14. The cerebrospinal fluid flows through the puncture needle body 11 and is transported into the cavity through the overflow hole 126. When the cerebrospinal fluid contacts the color-changing material 125, the medical staff observes the color change of the color-changing material 125 through the observation window 122 on the supporting sleeve 121, and then connects the connector to the connector part 8. If the puncture needle body 11 does not puncture into the subarachnoid space, the color-changing material 125 will not change color, indicating that the puncture is unsuccessful and the puncture position needs to be adjusted.

[0047] Specifically, the color-changing material 125 in the present application can be a glucose test paper. Since the cerebrospinal fluid contains glucose components, the glucose components will quickly change color after contacting the glucose test paper. Of course, the glucose test paper in the present application can be replaced, so that the puncture needle body 11 can be disinfected and fully used.

[0048] A groove body 127 is also provided on one side of the cavity, a sealing sleeve 128 is provided in the groove body 127, a cross bar 123 is provided on one side of the sealing sleeve 128, and a ring 124 is provided at one end of the cross bar 123, which can seal the overflow hole 126, facilitate rapid diversion of cerebrospinal fluid, and avoid the situation where the cerebrospinal fluid is absorbed by too much of the color-changing material 125.

[0049] When the puncture is successful, the ring 124 is pushed, and the ring 124 drives the sealing sleeve 128 to move in the groove body 127 through the cross bar 123. When the sealing sleeve 128 is completely moved out of the groove body 127, the sealing sleeve 128 seals the overflow hole 126 to prevent the cerebrospinal fluid from continuously flowing into the cavity, thereby facilitating the extraction of the cerebrospinal fluid.

[0050] As a specific embodiment of this application, please refer to Figure 6-Figure 12One end of the hose 6 is connected to the multi-stage pressure measuring structure 5, and the multi-stage pressure measuring structure 5 includes a front pressure measuring tube 501, a middle pressure measuring tube 502 and a rear pressure measuring tube 503. The front pressure measuring tube 501 is connected to the hose 6, the middle pressure measuring tube 502 is telescopically arranged in the front pressure measuring tube 501, and the rear pressure measuring tube 503 is telescopically arranged in the middle pressure measuring tube 502, so that the middle pressure measuring tube 502 and the rear pressure measuring tube 503 can be stretched to facilitate the measurement of the pressure of cerebrospinal fluid.

[0051] A front limit buckle 504 is set on one side of the inner wall of the front pressure measuring tube 501, and one end of the front limit buckle 504 is slidably set in the front limit groove 505, and the front limit groove 505 is set on the outer surface of the middle pressure measuring tube 502. A rear limit buckle 506 is set on one side of the inner wall of the middle measuring tube, and one end of the rear limit buckle 506 is slidably set in the rear limit groove 507, and the rear limit groove 507 is set on the outer surface of the rear pressure measuring tube 503, which can limit the movement of the middle pressure measuring tube 502 and the rear pressure measuring tube 503.

[0052] When the puncture is successful, the card connector 13 is connected to the connector part 8, and then the device is adsorbed on the patient's back skin through the adsorption structure, and the rear pressure measuring tube 503 is pulled, and the rear pressure measuring tube 503 moves along the rear limiting buckle 506. When the rear limiting groove 507 is fitted with the rear limiting buckle 506, the rear pressure measuring tube 503 drives the middle pressure measuring tube 502 to move along the front limiting buckle 504. When the front limiting buckle 504 is fitted with the front limiting groove 505, the middle pressure measuring tube 50 2 and the rear pressure measuring tube 503 are fully unfolded, and then the multi-stage pressure measuring structure 5 is rotated upward by 90° through the hose 6, and the pressure of the cerebrospinal fluid is indicated by the pressure markings on the front pressure measuring tube 501, the middle pressure measuring tube 502 and the rear pressure measuring tube 503. When the cerebrospinal fluid pressure of an adult patient reaches 0.78-1.76 KPa, the cerebrospinal fluid can be sampled, and when the cerebrospinal fluid pressure of a child reaches 0.4-1.0 KPa, the cerebrospinal fluid can be sampled.

[0053] Specifically, a pipe clamp 7 is also provided on the vertical plate 9. When the multi-stage pressure measuring structure 5 is rotated 90°, the pipe clamp 7 can clamp and fix the front pressure measuring tube 501.

[0054] Furthermore, the bottom plate 2 is also provided with a support frame 3 , and when the multi-stage pressure measuring structure 5 is placed horizontally, the support frame 3 can support the multi-stage pressure measuring structure 5 .

[0055] The multi-stage pressure measuring structure 5 in the present application can be assembled and disassembled from the hose, and the multi-stage pressure measuring structure 5 can be cleaned and subsequently disinfected, and can be recycled.

[0056] Furthermore, sealing rubber rings are provided at the connection between the end of the front pressure measuring tube 501 and the middle pressure measuring tube 502, as well as at the connection between the end of the middle pressure measuring tube 502 and the rear measuring tube, to ensure the sealing of the connection between the front pressure measuring tube 501, the middle pressure measuring tube 502 and the rear pressure measuring tube 503.

[0057] In the present application, the front pressure measuring tube 501, the middle pressure measuring tube 502 and the rear pressure measuring tube 503 can be made of high-transparency plastic.

[0058] As a specific embodiment of this application, please refer to Fig. 9 and Fig.10 A joint seat 508 is also provided at the end of the rear pressure measuring tube 503, a damping ball 514 is rotatably provided in the joint seat 508, a liquid outlet 509 connected to the rear pressure measuring tube 503 is provided in the middle of the joint seat 508, an infusion channel 512 corresponding to the liquid outlet 509 is provided in the middle of the damping ball 514, and a syringe connector 513 is provided on the other side of the damping ball 514, which can be connected to syringes of different specifications.

[0059] A positioning bayonet 511 is provided on the upper part of the joint seat 508, an arc-shaped limit groove 510 is provided on one side of the outer surface of the damping ball 514, an arc-shaped limit block is movably provided in the arc-shaped limit groove 510, and the arc-shaped limit block is connected to the joint seat 508. By adjusting the angle of the damping ball 514, the opening and closing of the liquid outlet 509 can be controlled.

[0060] When measuring the cerebrospinal fluid pressure, the outlet 509 is in a closed state. When the cerebrospinal fluid needs to be extracted, the multi-stage pressure measuring structure 5 is placed horizontally, and the damping ball 514 is pushed downward. The damping ball 514 rotates to drive the infusion channel 512 to rotate. When the damping ball 514 rotates 90 degrees, the infusion channel 512 is flush with the outlet 509, and the sampling test tube is placed at the position of the syringe connector 513. The cerebrospinal fluid is transported to the front pressure measuring tube 501 through the puncture needle and the hose 6, and then through the middle pressure measuring tube 50 2 is delivered to the rear pressure measuring tube 503, which delivers the cerebrospinal fluid through the liquid outlet 509 and the infusion channel 512, and then delivers it to the sampling tube through the syringe connector 513. After the sampling is completed, the damping ball 514 is pushed upward and rotated 90 degrees to move the syringe connector 513 into the positioning bayonet 511. At this time, the infusion channel 512 is separated from the liquid outlet 509, and the liquid outlet 509 is sealed. When the drug is injected later, the liquid outlet 509 can be connected again.

[0061] As a specific embodiment of this application, please refer to Figure 13-Figure 18A drug injection structure 4 is also provided on one side of the bottom plate 2, and the drug injection structure 4 can be connected to the multi-stage pressure measuring structure 5. The drug injection structure 4 includes a syringe carrier 403, and the syringe carrier 403 is movably provided on one side of the bottom plate 2. An adjusting block 404 is provided at the bottom of the syringe carrier 403, and the adjusting block 404 is movably provided in an adjusting groove 405. The adjusting groove 405 is provided on the bottom plate 2, and the adjusting block 404 is positioned and fixed in the adjusting groove 405 by a snap-fit ​​assembly. A uniform drug feeding assembly is also provided on one side of the syringe carrier 403.

[0062] The buckle assembly includes a rotating shaft 418, which is rotatably set on one side of the adjusting block 404, and torsion springs 417 are sleeved on both ends of the rotating shaft 418. A driving rod 415 is set on one side of the outer surface of the rotating shaft 418, and the driving rod 415 is movably set in the upper groove 414. A connecting rod 420 is set on the other side of the outer surface of the rotating shaft 418. A positioning buckle 422 is set on the connecting rod 420, and the positioning buckle 422 is set in the positioning card groove 421. The positioning card grooves 421 are evenly set on both sides of the adjusting groove 405. The connecting rod 420 is movably set in the lower groove 419, and the lower groove 419 is set on one side of the adjusting block 404. The position of the syringe carrier 403 can be adjusted to meet the carrying needs of syringes of different specifications.

[0063] When it is necessary to inject chemotherapy drugs, the multi-stage pressure measuring structure 5 is folded and kept horizontal. According to the specifications of the syringe, the position of the syringe carrier 403 is adjusted, and the button 416 is pressed. The button 416 drives the rotating shaft 418 to rotate through the driving rod 415. The rotation of the rotating shaft 418 drives the torsion spring 417 to rotate, and at the same time, the rotation drives the positioning button 422 to rotate through the connecting rod 420, and the positioning button 422 moves out of the positioning slot 421, and then the syringe carrier 403 is pushed, and the syringe carrier 403 drives the adjustment block 404 to move in the adjustment slot 405. When the syringe carrier 403 moves to the syringe carrying position, the button 416 is released, and the torsion spring 417 drives the rotating shaft 418 to reset and rotate, and the rotation drives the positioning button 422 to reset and rotate, and the positioning button 422 is clamped into the corresponding positioning slot 421, the adjustment block 404 is fixed, and the syringe carrier is fixed, and then the syringe connector 513 is connected to the syringe, and the syringe is supported by the syringe carrier 403.

[0064] Furthermore, a receiving groove 423 is provided on one side surface of the adjustment block 404 to position the positioning buckle 422 after rotation.

[0065] See also Fig.14 , Fig.15 as well as Fig.16The uniform speed drug feeding component includes a horizontal plate 402, which is arranged on one side of the syringe carrier 403. A mounting groove 410 is arranged on the horizontal plate 402. A horizontal screw rod 406 is rotatably arranged in the mounting groove 410. A nut seat 412 is arranged on the horizontal screw rod 406. The nut seat 412 is connected to the stepping seat 401. A handle cap positioning groove 411 is arranged on the stepping seat 401. A driving component for controlling the rotation of the horizontal screw rod 406 is also arranged on the syringe carrier 403. The driving component includes a worm gear 409, which is arranged on one side of the horizontal screw rod 406. The worm gear 409 is meshed with a worm 407. The worm 407 is rotatably arranged in an installation cavity 408. The installation cavity 408 is arranged in the syringe carrier 403. The worm 407 is also connected to the driving shaft of a reduction motor 413, so that the chemotherapy drugs in the syringe can be uniformly injected into the patient's body.

[0066] When the syringe is loaded, the worm 407 is driven to rotate by the reduction motor 413, the worm 407 drives the worm wheel 409 to rotate, the worm wheel 409 drives the transverse screw 406 to rotate, the nut seat 412 drives the stepping seat 401 to move, and then the handle cap on the syringe piston rod is inserted into the handle cap positioning groove 411, the movement of the nut seat 412 drives the stepping seat 401 to move, the movement of the stepping seat 401 drives the piston rod to move, and the movement of the piston rod delivers the chemotherapy drugs in the syringe through the infusion channel 512 and the liquid outlet 509 to the multi-stage pressure measuring structure 5, and then delivers them to the patient's body through the puncture needle, so that the chemotherapy drugs can be injected slowly and evenly.

[0067] In the present application, the bottom plate 2 may be provided with a built-in power supply, and the built-in power supply may be connected to a control switch, and the control switch is connected to a reduction motor 413 , so as to control the reduction motor 413 .

[0068] See also Fig.19 An adsorption structure is also provided on the vertical plate 9, and the adsorption structure includes two groups of guide holes 91, and the two groups of guide holes 91 are provided on both sides of the vertical plate 9. A first guide rod 92 and a second guide rod 95 are movably provided in the two groups of guide holes 91, a first suction cup 93 is provided on one side of the first guide rod 92, and a second suction cup 94 is provided on one side of the second guide rod 95. The first guide rod 92 and the second guide rod 95 are connected by a connecting bracket 96, so that the device can be quickly adsorbed on the patient's back skin.

[0069] When the puncture structure 1 is connected to the joint part 8, the connecting bracket 96 is pushed, and the connecting bracket 96 simultaneously drives the first guide rod 92 and the second guide rod 95 to move, and the first guide rod 92 and the second guide rod 95 drive the first suction cup 93 and the second suction cup 94 to move. When the first suction cup 93 and the second suction cup 94 are in contact with the patient's back, under the action of negative pressure, the first suction cup 93 and the second suction cup 94 are adsorbed and fixed on the patient's back, which can provide auxiliary support for the device and avoid the situation where the puncture needle body 11 is subjected to excessive force.

[0070] Furthermore, an electromagnet can be provided in the guide hole 91. When the device is adsorbed and fixed, the first guide rod 92 and the second guide rod 95 are adsorbed and fixed by the electromagnet, so as to ensure the fixed position of the vertical plate 9 and avoid the displacement of the puncture needle body 11 caused by the movement of the vertical plate 9.

[0071] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lumbar puncture device for injecting chemotherapy drugs, characterized in that: The device comprises a bottom plate (2), a vertical plate (9) is arranged on one side of the bottom plate (2), a joint portion (8) is arranged on the vertical plate (9), the joint portion (8) can be connected to the puncture structure (1), a hose (6) is arranged on one side of the joint portion (8), and one end of the hose (6) is connected to a multi-stage pressure measuring structure (5) for measuring the pressure of cerebrospinal fluid; The puncture structure (1) comprises a clamping joint (13), a puncture needle body (11) with a closed end is arranged on one side of the clamping joint (13), and a color change prompt component (12) is also arranged on one side of the puncture needle body (11); The color-changing prompting assembly (12) comprises a bearing sleeve (121), the bearing sleeve (121) being arranged on one side of the puncture needle body (11), a cavity being arranged in the bearing sleeve (121), a color-changing material (125) that changes color when in contact with cerebrospinal fluid being arranged in the cavity, and an overflow hole (126) communicating with the cavity being also arranged on the puncture needle body (11); A drug injection structure (4) is also provided on one side of the bottom plate (2), and the drug injection structure (4) can be connected to a multi-stage pressure measuring structure (5), and an adsorption structure is also provided on the vertical plate (9).

2. A lumbar puncture device for injecting chemotherapy drugs according to claim 1, characterized in that: A plurality of groups of flow guide holes (14) are provided at the end and side of the puncture needle body (11).

3. A lumbar puncture device for injecting chemotherapy drugs according to claim 2, characterized in that: A groove body (127) is also provided on one side of the cavity, a sealing sleeve (128) is provided in the groove body (127), a cross bar (123) is provided on one side of the sealing sleeve (128), and a collar (124) is provided at one end of the cross bar (123).

4. A lumbar puncture device for injecting chemotherapy drugs according to claim 1, characterized in that: The multi-stage pressure measuring structure (5) comprises a front pressure measuring tube (501), a middle pressure measuring tube (502) and a rear pressure measuring tube (503); the front pressure measuring tube (501) is connected to a hose (6); the middle pressure measuring tube (502) can be telescopically arranged in the front pressure measuring tube (501); and the rear pressure measuring tube (503) can be telescopically arranged in the middle pressure measuring tube (502).

5. A lumbar puncture device for injecting chemotherapy drugs according to claim 4, characterized in that: A front limit buckle (504) is arranged on one side of the inner wall of the front pressure measuring tube (501), one end of the front limit buckle (504) is slidably arranged in a front limit groove (505), and the front limit groove (505) is arranged on the outer surface of the middle pressure measuring tube (502); a rear limit buckle (506) is arranged on one side of the inner wall of the middle pressure measuring tube, one end of the rear limit buckle (506) is slidably arranged in a rear limit groove (507), and the rear limit groove (507) is arranged on the outer surface of the rear pressure measuring tube (503).

6. A lumbar puncture device for injecting chemotherapy drugs according to claim 4 or 5, characterized in that: A joint seat (508) is also provided at the end of the rear pressure measuring tube (503), a damping ball (514) is rotatably provided inside the joint seat (508), a liquid outlet (509) connected to the rear pressure measuring tube (503) is provided in the middle of the joint seat (508), an infusion channel (512) corresponding to the liquid outlet (509) is provided in the middle of the damping ball (514), and a syringe joint (513) is provided on the other side of the damping ball (514).

7. A lumbar puncture device for injecting chemotherapy drugs according to claim 6, characterized in that: A positioning bayonet (511) is provided on the upper portion of the joint seat (508), an arc-shaped limiting groove (510) is provided on one side of the outer surface of the damping sphere (514), an arc-shaped limiting block is movably provided in the arc-shaped limiting groove (510), and the arc-shaped limiting block is connected to the joint seat (508).

8. A lumbar puncture device for injecting chemotherapy drugs according to claim 1, characterized in that: The drug injection structure (4) comprises a syringe carrier (403), wherein the syringe carrier (403) is movably arranged on one side of the base plate (2), an adjustment block (404) is arranged at the bottom of the syringe carrier (403), the adjustment block (404) is movably arranged in an adjustment groove (405), the adjustment groove (405) is arranged on the base plate (2), the adjustment block (404) is positioned and fixed in the adjustment groove (405) by a snap-fit ​​assembly, and a uniform drug feeding assembly is also arranged on one side of the syringe carrier (403).

9. A lumbar puncture device for injecting chemotherapy drugs according to claim 8, characterized in that: The uniform speed medicine feeding component comprises a transverse plate (402), wherein the transverse plate (402) is arranged on one side of a syringe carrier plate (403), wherein a mounting groove (410) is arranged on the transverse plate (402), wherein a transverse screw rod (406) is rotatably arranged in the mounting groove (410), wherein a nut seat (412) is arranged on the transverse screw rod (406), wherein the nut seat (412) is connected to a stepping seat (401), wherein a handle cap positioning groove (411) is arranged on the stepping seat (401), and wherein a driving component for controlling the rotation of the transverse screw rod (406) is also arranged on the syringe carrier plate (403).

10. A lumbar puncture device for injecting chemotherapy drugs according to claim 8, characterized in that: The buckle assembly comprises a rotating shaft (418), the rotating shaft (418) is rotatably arranged on one side of the adjusting block (404), the two ends of the rotating shaft (418) are sleeved with torsion springs (417), a driving rod (415) is arranged on one side of the outer surface of the rotating shaft (418), the driving rod (415) is movably arranged in the upper groove (414), a connecting rod (420) is arranged on the other side of the outer surface of the rotating shaft (418), a positioning buckle (422) is arranged on the connecting rod (420), the positioning buckle (422) is arranged in the positioning card groove (421), the positioning card groove (421) is evenly arranged on both sides of the adjusting groove (405), the connecting rod (420) is movably arranged in the lower groove (419), and the lower groove (419) is arranged on one side of the adjusting block (404).

Images