Vacuum negative pressure sensing pressure monitoring lumbar puncture needle

Abstract

This application relates to a lumbar puncture needle for vacuum negative pressure sensing and pressure monitoring, comprising a housing, a display screen, a pressure sensor, a circuit board, a connecting tube, a puncture needle, and a vacuum tube. The housing has an internal cavity and a display hole adapted to the display screen is formed on its outer surface; the display screen is disposed within the display hole. The display screen is electrically connected to the circuit board and signal-connected to the pressure sensor. The circuit board is disposed within the cavity, and the pressure sensor is disposed within the cavity and electrically connected to the circuit board. The connecting tube extends through the housing, with one end protruding outside the housing. The connecting tube is offset from both the pressure sensor and the circuit board. One end of the connecting tube communicates with the puncture needle, and a connecting branch tube communicating with the vacuum tube is formed at the other end. An adjustment knob is provided at the end of the connecting tube furthest from the puncture needle. The vacuum tube and adjustment knob ensure stable pressure during the puncture process and reduce the risk of accidental puncture.

Description

Technical Field

[0001] This application relates to the field of puncture needle technology, specifically to a lumbar puncture needle for vacuum negative pressure sensing and pressure monitoring. Background Technology

[0002] Lumbar puncture is a common clinical procedure. Its purpose is to collect a certain amount of cerebrospinal fluid (CSF) sample. By detecting the number of cells, morphology, content of various ions, and pressure of the CSF, it can help diagnose infections, tumors, and intracranial diseases.

[0003] Chinese patent CN213046870U discloses a cerebrospinal fluid pressure measuring device for lumbar puncture, including a puncture needle, a pressure measuring tube, a pressure gauge, a fluid guiding tube, a collection tube, a sampler, a stop clamp, an mounting head, an external thread, a liquid pressure sensor, and a delivery channel. A sampler is provided on one side of the puncture needle, and a pressure measuring tube is placed between the sampler and the puncture needle. A pressure gauge is fixedly installed on the top of the pressure measuring tube. A delivery channel is laterally opened inside the pressure measuring tube, and a liquid pressure sensor is embedded in the inner wall of the delivery channel. The pressure measuring tube, the puncture needle, and the sampler are respectively connected through the fluid guiding tube and the collection tube. A stop clamp is clamped on the fluid guiding tube near the puncture needle. An mounting head is fixedly installed at one end of the fluid guiding tube and the collection tube near the pressure measuring tube. The mounting head and the delivery channel are screwed together by an external thread.

[0004] In use, the aforementioned patent involves pre-installing and snapping together the collection tube, pressure measuring tube, and sampler using screws. A stop-fluid clamp can be placed on the guide tube. The needle is then inserted into the spine using a puncture needle tailored to the patient's position. The guide tube and pressure measuring tube can then be screwed together using external threads, and the stop-fluid clamp can be removed. Simultaneously, the cerebrospinal fluid inside the spine is automatically drawn into the puncture needle due to negative pressure and enters the delivery channel inside the pressure measuring tube via the guide tube. At the same time, a liquid pressure sensor embedded in the inner wall of the delivery channel can monitor the cerebrospinal fluid pressure in real time and display the specific data visually through a pressure gauge. The fluid is then guided into the sampler via the collection tube. The entire process—puncture, pressure measurement, and sampling—is completed in one step, making the operation simple, efficient, convenient for puncture, and allowing for real-time pressure monitoring.

[0005] However, the aforementioned patents still have the following drawbacks:

[0006] The aforementioned patent utilizes the principle of disassembling and assembling a stop clamp to automatically guide cerebrospinal fluid into the puncture needle and then into the delivery channel inside the pressure measuring tube through the fluid guide tube; however, simply disassembling and assembling the stop clamp cannot guarantee the stability of the negative pressure, and when the negative pressure is too high or too low, the negative pressure can only be eliminated by installing the stop clamp, and the negative pressure cannot be adjusted. Utility Model Content

[0007] In order to solve the problems existing in the prior art, the purpose of this application is to provide a lumbar puncture needle for vacuum negative pressure sensing and pressure monitoring, so as to solve the technical problems that the prior art cannot guarantee the stability of negative pressure and cannot adjust the negative pressure.

[0008] The lumbar puncture needle for vacuum negative pressure sensing and pressure monitoring described in this application includes a housing, a display screen, a pressure sensor, a circuit board, a connecting tube, a puncture needle, and a vacuum tube.

[0009] The box body has an internal cavity and a display hole adapted to the display screen is formed on one of the outer surfaces of the box body; the display screen is electrically connected to the circuit board and is also connected to the pressure sensor signal.

[0010] The circuit board is disposed in the accommodating cavity, and the pressure sensor is disposed in the accommodating cavity, electrically connected to the circuit board and communicating with the connecting pipe;

[0011] The connecting tube passes through the housing and its end protrudes outside the housing. The connecting tube is offset from the pressure sensor and the circuit board. One end of the connecting tube is connected to the puncture needle, and a connecting branch tube connected to the vacuum tube is formed at one end of the other end. An adjustment knob is provided at the end of the connecting tube away from the puncture needle.

[0012] Preferably, the housing includes a bottom shell and a top cover, the bottom shell and the top cover are detachably connected, the display hole is formed on the side of the top cover away from the bottom shell; the connecting tube passes through the bottom shell along the length direction of the bottom shell; the circuit board is connected to the bottom shell, or the circuit board is connected to the top cover.

[0013] Preferably, the lumbar puncture needle for vacuum negative pressure sensing and pressure monitoring further includes a first end cap and a second end cap; the first end cap is disposed at one end of the box body along its length and is detachably connected to the box body; the second end cap is disposed at the other end of the box body along its length and is detachably connected to the box body; the first end cap has a first through hole adapted to the connecting tube on a surface perpendicular to the length direction of the box body; the second end cap has a second through hole adapted to the connecting branch tube at a position corresponding to the connecting branch tube.

[0014] Preferably, the puncture needle is detachably connected to the connecting tube.

[0015] Preferably, the lumbar puncture needle for vacuum negative pressure sensing and pressure monitoring also includes a charging port. A charging hole adapted to the charging port is provided on one side of the housing. The charging port is located at the charging hole and is electrically connected to the circuit board.

[0016] Preferably, the lumbar puncture needle for vacuum negative pressure sensing and pressure monitoring further includes a switch button. A mounting hole adapted to the switch button is provided on a part of the outer periphery of the housing. The mounting hole is connected to the receiving cavity. The switch button is located at the mounting hole and is electrically connected to the circuit board.

[0017] Preferably, the lumbar puncture needle for vacuum negative pressure sensing and pressure monitoring also includes an indicator light. A light-transmitting hole adapted to the indicator light is opened on a part of the outer periphery of the box. The indicator light is located at the light-transmitting hole and is electrically connected to the circuit board.

[0018] Preferably, the lumbar puncture needle with vacuum negative pressure sensing and pressure monitoring further includes a cover sleeve, which is fitted over the puncture needle and detachably connected to the puncture needle.

[0019] The advantages of the lumbar puncture needle for vacuum negative pressure sensing and pressure monitoring described in this application are as follows:

[0020] The vacuum tube and adjustment knob create negative pressure, which can be adjusted to control its magnitude and operation. A pressure sensor connects to the connecting tube. When monitoring cerebrospinal fluid pressure, the fluid passes through the puncture needle into the connecting tube. The pressure sensor monitors pressure changes in real time. Doctors can adjust the negative pressure using the adjustment knob based on the real-time pressure data displayed on the screen, ensuring stable pressure throughout the puncture process. This allows for timely responses to the puncture situation based on real-time pressure data, preventing excessively deep or improper punctures and reducing the risk of accidental puncture. Attached Figure Description

[0021] Figure 1 This is an exploded view of a lumbar puncture needle for vacuum negative pressure sensing and pressure monitoring as described in this application;

[0022] Figure 2 This is a schematic diagram showing the fit between the box body and the connecting pipe;

[0023] Figure 3 This is a schematic diagram showing the fit between the box body, the first end cap, and the second end cap.

[0024] Explanation of reference numerals in the attached drawings: 1-box body, 101-bottom shell, 102-top cover, 2-display screen, 3-pressure sensor, 4-circuit board, 5-connecting tube, 51-connecting branch tube, 6-puncture needle, 7-vacuum tube, 8-adjustment knob, 9-first end cover, 10-second end cover, 11-charging port, 12-switch button, 13-cover. Detailed Implementation

[0025] like Figures 1-3As shown, the lumbar puncture needle for vacuum negative pressure sensing and pressure monitoring described in this application includes a housing 1, a display screen 2, a pressure sensor 3, a circuit board 4, a connecting tube 5, a puncture needle 6, and a vacuum tube 7.

[0026] The interior of the housing 1 has a receiving cavity, and a display hole adapted to the display screen 2 is formed on a part of the outer surface of the housing 1; the display screen 2 is electrically connected to the circuit board 4 and signal connected to the pressure sensor 3.

[0027] The circuit board 4 is disposed inside the accommodating cavity, and the pressure sensor 3 is disposed inside the accommodating cavity, electrically connected to the circuit board 4 and connected to the connecting pipe 5;

[0028] The connecting tube 5 passes through the box body 1, and the end of the connecting tube 5 protrudes outside the box body 1. The connecting tube 5 is staggered from the pressure sensor 3 and from the circuit board 4. One end of the connecting tube 5 is connected to the puncture needle 6, and a connecting branch tube 51 connected to the vacuum tube 7 is formed at one end of the other end. An adjustment knob 8 is provided at the end of the connecting tube 5 away from the puncture needle 6.

[0029] Specifically, the display screen 2 can be configured such that its top surface is level with the display hole, or its bottom surface is level with the display hole, meaning the display screen 2 protrudes from the display hole. The display screen 2 is electrically connected to the circuit board 4 and signal-connected to the pressure sensor 3. The pressure sensor 3 converts the pressure signal into an electrical signal and transmits it to the display screen 2. The internal circuitry of the display screen 2 converts the received signal into data displayed on its surface for the doctor's monitoring. For example, the pressure sensor 3 can be an MPXV7002 model.

[0030] Circuit board 4 can be directly connected to an external power source to power the pressure sensor 3, display screen 2, and other electronic devices; alternatively, a battery can be installed inside the cavity to power circuit board 4. The choice of which method to use depends on the specific circumstances.

[0031] A connecting tube 5 is disposed through the housing 1. In one embodiment of this disclosure, the connecting tube 5 extends along the length of the housing 1 through the lower part of the housing 1. One part of the connecting tube 5 located within the accommodating cavity is connected to the pressure sensor 3. The ends of the connecting tube 5 are all exposed outside the housing 1. One end of the connecting tube 5 is connected to the puncture needle 6, and the other end forms a connecting branch tube 51, which is connected to the vacuum tube 7. An adjusting knob 8 is also provided at this end. A regulating valve (not shown in the figure) is provided at the connection between the connecting branch tube 51 and the vacuum tube 7. The regulating valve is connected to the adjusting knob 8. By rotating the adjusting knob 8, the opening and closing of the valve and the size of the orifice at the connection can be adjusted, thereby controlling the magnitude of the negative pressure. For example, rotating the adjusting knob 8 counterclockwise can close or reduce the negative pressure, and rotating the adjusting knob 8 clockwise can open or increase the negative pressure.

[0032] The vacuum tube 7 and the adjusting knob 8 are used to create negative pressure. The magnitude of the negative pressure, as well as its opening and closing, can be adjusted by the adjusting knob 8. The pressure sensor 3 is connected to the connecting tube 5. When monitoring cerebrospinal fluid pressure, the cerebrospinal fluid enters the connecting tube 5 through the puncture needle 6. The pressure sensor 3 monitors the pressure changes in real time. The doctor can adjust the negative pressure by adjusting the knob 8 according to the real-time pressure data displayed on the display screen 2, thereby ensuring the stability of the pressure throughout the puncture process. At the same time, the doctor can react to the puncture situation in a timely manner based on the real-time pressure data, avoiding excessive puncture or improper puncture position, and reducing the risk of accidental puncture.

[0033] Furthermore, in one embodiment of this application, the housing 1 includes a bottom shell 101 and a top cover 102, which are detachably connected. A display hole is formed on the side of the top cover 102 away from the bottom shell 101. A connecting tube 5 passes through the bottom shell 101 along its length. A circuit board 4 is connected to the bottom shell 101 or to the top cover 102.

[0034] The housing 1 is divided into a bottom shell 101 and a top cover 102. The bottom shell 101 and the top cover 102 are detachably connected, ensuring that when the electronic components housed in the cavity malfunction, the bottom shell 101 and the top cover 102 can be disassembled for repair. In one embodiment of this application, the bottom shell 101 and the top cover 102 are bonded using an ultrasonic process. When it is necessary to disassemble the bottom shell 101 and the top cover 102, the adhesive is softened by heating, and then the bottom shell 101 and the top cover 102 can be disassembled.

[0035] Furthermore, since the end of the connecting tube 5 protrudes outside the box body 1, and the adjustment knob is located at one end of the connecting tube 5, in order to avoid accidental activation of the adjustment knob 8, the lumbar puncture needle for vacuum negative pressure sensing pressure monitoring described in this application also includes a first end cap 9 and a second end cap 10; the first end cap 9 is located at one end of the length direction of the box body 1 and is detachably connected to the box body 1; the second end cap 10 is located at the other end of the length direction of the box body 1 and is detachably connected to the box body 1; a first through hole adapted to the connecting tube 5 is formed on the surface of the first end cap 9 perpendicular to the length direction of the box body 1; the second end cap 10 has a second through hole adapted to the connecting branch tube 51 at the corresponding position.

[0036] Specifically, the first end cap 9 is placed on the end of the connecting tube 5 that connects to the puncture needle 6, and the second end cap 10 is placed on the end of the connecting tube 5 where the adjustment knob is located. More specifically, the first end cap 9 is snapped into the box body 1, and the second end cap 10 is snapped into the box body 1. The snap-fit ​​design facilitates the assembly and disassembly of the first end cap 9 and the second end cap 10, allowing them to be quickly removed when needed.

[0037] Furthermore, the puncture needle 6 and the connecting tube 5 are detachably connected. For example, the puncture needle 6 and the connecting tube 5 can be connected by threads. The threaded connection not only facilitates the assembly, installation, and disassembly of the puncture needle 6 and the connecting tube 5, but also ensures its sealing performance, preventing cerebrospinal fluid leakage and contamination.

[0038] Furthermore, in one embodiment of this application, the circuit board 4 is electrically connected to an external power source. In order to quickly connect to the external power source, the lumbar puncture needle for vacuum negative pressure sensing pressure monitoring described in this application also includes a charging port 11. A charging hole adapted to the charging port 11 is opened on one side of the housing 1. The charging port 11 is located at the charging hole and electrically connected to the circuit board 4.

[0039] For example, the charging port 11 can be a type-C interface or a USB interface, and the choice of charging port 11 can be made according to the actual situation.

[0040] Furthermore, the lumbar puncture needle for vacuum negative pressure sensing and pressure monitoring described in this application also includes a switch button 12. A mounting hole adapted to the switch button 12 is provided on the outer periphery of the housing 1. The mounting hole is connected to the accommodating cavity. The switch button 12 is located at the mounting hole and is electrically connected to the circuit board 4.

[0041] The switch button 12 is used to turn the pressure sensor 3 and the display screen 2 on or off. When not in use, the pressure sensor 3 and the display screen 2 can be turned off to save energy and be more environmentally friendly.

[0042] Furthermore, the lumbar puncture needle for vacuum negative pressure sensing and pressure monitoring described in this application also includes an indicator light. A light-transmitting hole adapted to the indicator light is opened on the outer periphery of the housing 1. The indicator light is set at the light-transmitting hole and electrically connected to the circuit board 4.

[0043] Furthermore, in order to protect the puncture needle 6, the lumbar puncture needle with vacuum negative pressure sensing pressure monitoring described in this application also includes a cover 13, which is sleeved on the outside of the puncture needle 6 and is detachably connected to the puncture needle 6.

[0044] The lumbar puncture needle described in this application uses a vacuum tube 7 and an adjustment knob 8 to create negative pressure. The vacuum tube 7 generates negative pressure, and the adjustment knob 8 adjusts the magnitude of the negative pressure and allows it to be turned on and off. The pressure sensor 3 is connected to the connecting tube 5. When monitoring cerebrospinal fluid pressure, the cerebrospinal fluid enters the connecting tube 5 through the puncture needle 6. The pressure sensor 3 monitors pressure changes in real time. The doctor can adjust the negative pressure by adjusting the knob 8 based on the real-time pressure data displayed on the display screen 2, thereby ensuring the stability of the pressure throughout the puncture process. At the same time, the doctor can react promptly to the puncture situation based on the real-time pressure data, avoiding excessive puncture depth or improper puncture position, and reducing the risk of accidental puncture.

[0045] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application.

[0046] For those skilled in the art, various other corresponding changes and modifications can be made based on the technical solutions and concepts described above, and all such changes and modifications should fall within the protection scope of the claims of this application.

Claims

1. A lumbar puncture needle for vacuum negative pressure sensing pressure monitoring, characterized in that, It includes a housing (1), a display screen (2), a pressure sensor (3), a circuit board (4), a connecting tube (5), a puncture needle (6), and a vacuum tube (7); The box (1) has an accommodating cavity inside and a display hole adapted to the display screen (2) is formed on one of the outer surfaces of the box (1); the display screen (2) is electrically connected to the circuit board (4) and signal connected to the pressure sensor (3); The circuit board (4) is disposed in the accommodating cavity, and the pressure sensor (3) is disposed in the accommodating cavity, electrically connected to the circuit board (4) and connected to the connecting pipe (5); The connecting tube (5) is disposed through the box body (1), and the end of the connecting tube (5) is exposed outside the box body (1). The connecting tube (5) is offset from the pressure sensor (3) and offset from the circuit board (4). One end of the connecting tube (5) is connected to the puncture needle (6), and a connecting branch tube (51) connected to the vacuum tube (7) is formed at one end of the other end. An adjustment knob (8) is provided at the end of the connecting tube (5) away from the puncture needle (6).

2. The vacuum negative pressure sensing pressure monitoring lumbar puncture needle according to claim 1, wherein, The box body (1) includes a bottom shell (101) and a top cover (102), the bottom shell (101) and the top cover (102) are detachably connected, the display hole is formed on the side of the top cover (102) away from the bottom shell (101); the connecting tube (5) passes through the bottom shell (101) along the length direction of the bottom shell (101); the circuit board (4) is connected to the bottom shell (101), or the circuit board (4) is connected to the top cover (102).

3. The vacuum negative pressure sensing pressure monitoring lumbar puncture needle according to claim 1 or 2, wherein, It also includes a first end cap (9) and a second end cap (10); the first end cap (9) is disposed at one end of the box body (1) along its length and is detachably connected to the box body (1); the second end cap (10) is disposed at the other end of the box body (1) along its length and is detachably connected to the box body (1); the first end cap (9) has a first through hole adapted to the connecting pipe (5) on one side perpendicular to the length direction of the box body (1); the second end cap (10) has a second through hole adapted to the connecting branch pipe (51) at a position corresponding to the connecting branch pipe (51).

4. The needle of claim 3, wherein the needle is a lumbar puncture needle. The puncture needle (6) is detachably connected to the connecting tube (5).

5. The vacuum negative pressure sensing pressure monitoring lumbar puncture needle according to claim 3, wherein, It also includes a charging port (11), and a charging hole adapted to the charging port (11) is provided on one side of the box body (1). The charging port (11) is located at the charging hole and is electrically connected to the circuit board (4).

6. The vacuum negative pressure sensing pressure monitoring lumbar puncture needle of claim 3, wherein, It also includes a switch button (12). A mounting hole adapted to the switch button (12) is provided at one point on the outer periphery of the box body (1). The mounting hole is connected to the accommodating cavity. The switch button (12) is located at the mounting hole and is electrically connected to the circuit board (4).

7. The vacuum negative pressure sensing pressure monitoring lumbar puncture needle according to claim 3, wherein, It also includes an indicator light. A light-transmitting hole adapted to the indicator light is opened at one point on the outer periphery of the box (1). The indicator light is located at the light-transmitting hole and is electrically connected to the circuit board (4).

8. The lumbar puncture needle for vacuum negative pressure sensing and pressure monitoring according to claim 1, characterized in that, A cover sleeve (13) is further included, which is sleeved outside the puncture needle (6) and detachably connected with the puncture needle (6).

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