Cerebrospinal fluid lumbar puncture needle pressure measuring device

Abstract

The utility model discloses a cerebrospinal fluid lumbar puncture needle pressure measuring device, and relates to the technical field of medical instruments. The cerebrospinal fluid lumbar puncture needle pressure measuring device comprises an outer needle, an inner needle is arranged on the inner side of the outer needle in a penetrating mode, the outer needle comprises a pintle, a needle tube and a hollow needle, and the pintle, the needle tube and the hollow needle are communicated; the inner needle comprises a handle and a solid needle core; a flow guide opening is formed in the outer wall of the side, close to the needle tip, of the solid needle core, a flow channel is formed in the inner wall of the solid needle core and communicated with the flow guide opening, and a liquid outlet is formed in the outer wall of the side, close to the handle, of the solid needle core. By rotating the handle, the positions of the flow guide opening and the liquid outlet can be conveniently adjusted, it is ensured that cerebrospinal fluid can smoothly enter the flow channel after successful puncture and finally flow out into the pressure measuring tube and the liquid storage bag, leakage and waste of the cerebrospinal fluid are effectively avoided through the design, meanwhile, the pollution risk is reduced, and the safety of a patient is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field especially, a kind of cerebrospinal fluid lumbar puncture needle pressure measuring device. BACKGROUND

[0002] Lumbar puncture is a kind of diagnosis and treatment operation commonly used in clinic, can be used for diagnosing various inflammatory diseases of central nervous system, vascular diseases, spinal cord lesions, suspected intracranial space-occupying lesions, nervous system diseases with unknown diagnosis and air brain, myelography etc.;Also used for liquid release (decompression) due to cerebrospinal fluid pressure is too high and injecting drug to treat central nervous system diseases, and the lumbar puncture needle is used to penetrate the patient's lumbar spine to obtain cerebrospinal fluid in lumbar puncture. The lumbar puncture needle includes a needle tube outside and a solid needle core inserted into the needle tube. One end of the needle tube is provided with a needle tip for penetrating the patient's lumbar spine, and the other end of the needle tube is provided with a needle seat having a through hole, and the needle core is inserted into the through hole. When used clinically, the needle tip of the lumbar puncture needle is inserted into the patient's lumbar spine, and then the needle core is pulled out, and the corresponding detection or flow guide component is connected at the through hole.

[0003] According to the patent with the publication number CN219000361U, a cerebrospinal fluid lumbar puncture needle pressure measuring device is disclosed, which comprises a lumbar puncture needle and a pressure measuring tube. The lumbar puncture needle includes a needle tube, a needle core and a needle seat. One end of the needle tube is provided with a needle tip for puncture. The needle tip side wall is provided with a liquid inlet hole communicating with the needle tube. The needle seat is arranged at the other end of the needle tube and is provided with a through hole communicating with the needle tube. The needle core is inserted into the needle tube through the through hole. The tail end of the needle seat is provided with a liquid outlet pipe.

[0004] When the above-mentioned patent is used, the needle tip of the lumbar puncture needle is inserted into the patient's lumbar spine, and then the needle core is pulled out. The above-mentioned operation is a non-closed process. The cerebrospinal fluid is easily contaminated by bacteria and other microorganisms during exposure to air. UTILITY MODEL CONTENT

[0005] The utility model aims to provide a cerebrospinal fluid lumbar puncture needle pressure measuring device, which solves the technical problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a cerebrospinal fluid lumbar puncture needle pressure measuring device, comprising an outer needle, an inner needle is arranged on the inner side of the outer needle, the outer needle comprises a needle plug, a needle tube and a hollow needle, one side outer wall of the needle plug is fixedly connected with the needle tube, the other end of the needle plug is fixedly connected with the hollow needle, and the needle plug, the needle tube and the hollow needle are communicated.

[0007] The inner needle comprises a handle and a solid needle core, one side outer wall of the handle is fixedly connected with the solid needle core, and the solid needle core is arranged in the hollow needle.

[0008] The solid needle core is provided with a flow guide opening on one side of the outer wall near the needle tip, and a flow channel is formed on the inner wall of the solid needle core, which is communicated with the flow guide opening; and the solid needle core is provided with a liquid outlet on one side of the outer wall near the handle;

[0009] The inner wall of the needle tube is fixedly connected with a liquid guide tube, one end of the liquid guide tube penetrates through the needle tube and extends to the outside of the needle tube, the outer wall of the liquid guide tube is threadedly connected with a pressure measuring tube, the inner wall of the pressure measuring tube is fixedly connected with a pressure sensor, the outside of the pressure measuring tube is provided with a pressure gauge, the pressure sensor and the pressure gauge are connected through wires, the upper side of the pressure measuring tube is fixedly connected with a drainage tube, the other end of the drainage tube is provided with a liquid storage bag, and the outer wall of the drainage tube is provided with a control valve.

[0010] Preferably, the outer wall of the solid needle core abuts against the inner wall of the hollow needle, and the needle tip part of the hollow needle and the solid needle core are both designed with an inclined surface.

[0011] Preferably, the length of the flow channel is less than the length of the solid needle core, and the flow channel is arranged along the upper and lower sides of the inner wall of the solid needle core.

[0012] Preferably, when the flow channel and the flow guide opening are moved to the inclined surface of the needle tip part of the hollow needle by rotating the solid needle core, the liquid outlet is communicated with the liquid guide tube.

[0013] Preferably, the radius of the liquid outlet is less than or equal to the radius of the liquid guide tube.

[0014] Preferably, the flow guide opening and the liquid outlet are arranged on two side surfaces of the solid needle core.

[0015] Compared with the related art, the cerebral spinal fluid lumbar puncture needle pressure measuring device has the following beneficial effects:

[0016] 1. The cerebral spinal fluid lumbar puncture needle pressure measuring device integrates multiple functions such as puncture, flow guide, pressure measurement and sample collection, has a compact structure, is easy to operate, and greatly improves the work efficiency of medical staff.

[0017] 2. The cerebral spinal fluid lumbar puncture needle pressure measuring device can measure the pressure value of the cerebral spinal fluid in real time and accurately through the built-in pressure measuring tube and pressure sensor, provides key diagnostic information for doctors, and helps to timely discover and handle intracranial pressure abnormalities.

[0018] 3. The cerebral spinal fluid lumbar puncture needle pressure measuring device can conveniently adjust the positions of the flow guide opening and the liquid outlet by rotating the handle, ensures that the cerebral spinal fluid can smoothly enter the flow channel after successful puncture, and finally flows out to the pressure measuring tube and the liquid storage bag, which effectively avoids leakage and waste of the cerebral spinal fluid, reduces the pollution risk, and guarantees the safety of the patient. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the whole structure schematic view of the utility model;

[0020] Figure 2 It is the structure schematic view of the utility model;

[0021] Figure 3 It is the structure schematic view of the utility model; Figure 2 It is the enlarged structure schematic view of A place in the utility model;

[0022] Figure 4 It is the enlarged structure schematic view of B place in the utility model; Figure 2

[0023] Figure 5 It is the structure schematic view of the utility model.

[0024] In the drawing: 1, outer needle; 101, needle bolt; 102, needle tube; 103, hollow needle; 2, inner needle; 201, handle; 202, solid needle core; 3, flow guide port; 4, flow channel; 5, liquid guide pipe; 6, pressure measuring pipe; 7, pressure gauge; 8, drainage tube; 9, liquid storage bag; 10, control valve; 11, liquid outlet. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0026] Please refer to Figures 1-5 The utility model provides a technical scheme: a cerebrospinal fluid lumbar puncture needle pressure measuring device, including outer needle 1, the inside of outer needle 1 is inserted and arranged with inner needle 2, outer needle 1 includes needle bolt 101, needle tube 102, hollow needle 103, the one side outer wall of needle bolt 101 is fixedly connected with needle tube 102, the other end of needle bolt 101 is fixedly connected with hollow needle 103, needle bolt 101, needle tube 102, hollow needle 103 are communicated;

[0027] Inner needle 2 includes handle 201, solid needle core 202, the one side outer wall of handle 201 is fixedly connected with solid needle core 202, solid needle core 202 is inserted and arranged in hollow needle 103;

[0028] The one side outer wall of solid needle core 202 close to needle tip is provided with flow guide port 3, the inner wall of solid needle core 202 is provided with flow channel 4, flow channel 4 is communicated with flow guide port 3, the one side outer wall of solid needle core 202 close to handle 201 is provided with liquid outlet 11;​

[0029] The inner wall of the needle tube 102 is fixedly connected with a liquid guide pipe 5, one end of the liquid guide pipe 5 penetrates through the needle tube 102 and extends to the outside of the needle tube 102, the outer wall of the liquid guide pipe 5 is threadedly connected with a pressure measuring pipe 6, the inner wall of the pressure measuring pipe 6 is fixedly connected with a pressure sensor, the outside of the pressure measuring pipe 6 is provided with a pressure gauge 7, the pressure sensor is connected with the pressure gauge 7 through wires, the upper side of the pressure measuring pipe 6 is fixedly connected with a drainage pipe 8, the other end of the drainage pipe 8 is provided with a liquid storage bag 9, and the outer wall of the drainage pipe 8 is provided with a control valve 10.

[0030] In the embodiment, the solid needle core 202 is inserted into the hollow needle 103 of the outer needle 1 through the handle 201; at this time, the outer wall of the solid needle core 202 is in close abutment with the inner wall of the hollow needle 103, then the needle tip part of the device is aligned with the lumbar vertebrae of the patient, and the puncture operation is performed.

[0031] After the puncture is successful, the handle 201 is rotated to move the liquid guide port 3 to the bevel surface of the needle tip part of the hollow needle 103, and the liquid outlet 11 is moved to the liquid guide pipe 5, at this time, the liquid enters the hollow needle 103, the liquid enters the flow channel 4 through the liquid guide port 3, the cerebrospinal fluid continues to flow in the flow channel 4, and reaches the liquid outlet 11 on the side of the solid needle core 202 close to the handle 201, at this time, the cerebrospinal fluid flows out through the liquid outlet 11 and further flows along the liquid guide pipe 5 fixedly connected to the inner wall of the needle tube 102, and then enters the pressure measuring pipe 6, and the pressure sensor detects the pressure, and the real-time pressure value of the cerebrospinal fluid is displayed on the pressure gauge 7.

[0032] Finally, the cerebrospinal fluid continues to flow along the drainage pipe 8 above the pressure measuring pipe 6 and flows into the liquid storage bag 9. In this way, the medical staff can conveniently collect the cerebrospinal fluid sample for subsequent detection and analysis.

[0033] The outer wall of the solid needle core 202 is in abutment with the inner wall of the hollow needle 103, and the needle tip part of the hollow needle 103 and the solid needle core 202 are designed in a bevel surface.

[0034] The length of the flow channel 4 is less than the length of the solid needle core 202, and the flow channel 4 is arranged along the upper and lower sides of the inner wall of the solid needle core 202.

[0035] In the embodiment, the flow path of the cerebrospinal fluid is limited by the flow channel 4, and flows along the set path to the liquid outlet 11. The length of the flow channel 4 is less than the length of the solid needle core 202, and the two ends of the flow channel 4 are communicated with the liquid guide port 3 and the liquid outlet 11.

[0036] When the flow channel 4 and the liquid guide port 3 are moved to the bevel surface of the needle tip part of the hollow needle 103 by rotating the solid needle core 202, the liquid outlet 11 is communicated with the liquid guide pipe 5.

[0037] In this embodiment, the position of the solid needle core 202 can be adjusted by rotating the handle 201, so that the flow channel 4 and the guide flow port 3 are aligned with the beveled surface of the tip of the hollow needle 103, thereby ensuring that the cerebrospinal fluid can smoothly enter the flow channel 4. At the same time, when the liquid outlet 11 is in communication with the guide tube 5, the cerebrospinal fluid can flow along the guide tube 5 into the pressure measuring tube 6 and the drainage tube 8, realizing the functions of pressure measurement and sample collection.

[0038] In this embodiment, the radius of the liquid outlet 11 is less than or equal to the radius of the guide tube 5.

[0039] In this embodiment, the close fit of the liquid outlet 11 with the guide tube 5 also prevents leakage and contamination of the cerebrospinal fluid.

[0040] In this embodiment, the guide flow port 3 and the liquid outlet 11 are arranged on the two side surfaces of the solid needle core 202.

[0041] In this embodiment, the handle 201 is rotated to move the guide flow port 3 to the beveled surface of the tip of the hollow needle 103, and the liquid outlet 11 is moved to the guide tube 5, so that the cerebrospinal fluid enters the flow channel 4 through the guide flow port 3 and flows out through the liquid outlet 11.

[0042] The guide flow port 3 and the liquid outlet 11 can also be arranged on the same central axis, and the positions of structures such as the liquid storage bag 9 and the pressure gauge 7 are arranged according to the liquid outlet 11.

[0043] Working principle: In use, the solid needle core 202 is inserted into the hollow needle 103 of the outer needle 1 through the handle 201; at this time, the outer wall of the solid needle core 202 is in close contact with the inner wall of the hollow needle 103, then the tip of the device is aligned with the lumbar region of the patient, and the puncture operation is performed.

[0044] After successful puncture, the handle 201 is rotated to move the guide flow port 3 to the beveled surface of the tip of the hollow needle 103, and the liquid outlet 11 is moved to the guide tube 5, at this time, the liquid enters the hollow needle 103, the liquid enters the flow channel 4 through the guide flow port 3, the cerebrospinal fluid continues to flow in the flow channel 4, until it reaches the liquid outlet 11 on the side of the solid needle core 202 close to the handle 201, at this time, the cerebrospinal fluid will flow out through this liquid outlet 11 and further flow along the guide tube 5 fixedly connected to the inner wall of the needle tube 102, then enter the pressure measuring tube 6, and the pressure sensor detects the pressure, and the real-time pressure value of the cerebrospinal fluid is displayed on the pressure gauge 7.

[0045] Finally, the cerebrospinal fluid will continue to flow along the drainage tube 8 above the pressure measuring tube 6 and flow into the liquid storage bag 9. In this way, medical personnel can conveniently collect cerebrospinal fluid samples for subsequent detection and analysis.

[0046] The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and any skilled person in the art, according to the technical scheme and the inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A cerebrospinal fluid lumbar puncture pressure measuring device, comprising an outer needle (1), an inner needle (2) inserted into the inner side of the outer needle (1), characterized in that: The outer needle (1) comprises a needle plug (101), a needle tube (102), and a hollow needle (103); one outer wall of the needle plug (101) is fixedly connected to the needle tube (102); the other end of the needle plug (101) is fixedly connected to the hollow needle (103); the needle plug (101), the needle tube (102), and the hollow needle (103) are in communication; The inner needle (2) comprises a handle (201) and a solid needle core (202); the solid needle core (202) is fixedly connected to an outer wall of one side of the handle (201); and the solid needle core (202) is inserted into the hollow needle (103); A flow guide port (3) is provided on the outer wall of the solid needle core (202) near the needle tip, a flow channel (4) is provided on the inner wall of the solid needle core (202), the flow channel (4) is connected to the flow guide port (3), and a liquid outlet (11) is provided on the outer wall of the solid needle core (202) near the handle (201); The inner wall of the needle tube (102) is fixedly connected to a liquid guide tube (5), one end of the liquid guide tube (5) passes through the needle tube (102) and extends to the outside of the needle tube (102), the outer wall of the liquid guide tube (5) is threadedly connected to a pressure measuring tube (6), the inner wall of the pressure measuring tube (6) is fixedly connected to a pressure sensor, a pressure gauge (7) is installed on the outside of the pressure measuring tube (6), the pressure sensor and the pressure gauge (7) are connected through a wire, the upper side of the pressure measuring tube (6) is fixedly connected to a drainage tube (8), the other end of the drainage tube (8) is provided with a liquid storage bag (9), and the outer wall of the drainage tube (8) is installed with a control valve (10).

2. A cerebrospinal fluid lumbar puncture pressure measuring device according to claim 1, characterized in that: The outer wall of the solid needle core (202) abuts against the inner wall of the hollow needle (103), and the needle tips of the hollow needle (103) and the solid needle core (202) both adopt a beveled surface design.

3. A cerebrospinal fluid lumbar puncture pressure measuring device according to claim 1, characterized in that: The length of the flow channel (4) is less than the length of the solid needle core (202), and the flow channel (4) is arranged up and down along the inner wall of the solid needle core (202).

4. A cerebrospinal fluid lumbar puncture pressure measuring device according to claim 1, characterized in that: When the solid needle core (202) is rotated to move the flow channel (4) and the flow guide port (3) to the oblique section of the needle tip of the hollow needle (103), the liquid outlet (11) is connected to the liquid guide tube (5).

5. The cerebrospinal fluid lumbar puncture pressure measuring device according to claim 1, characterized in that: The radius of the liquid outlet (11) is smaller than or equal to the radius of the liquid guide tube (5).

6. The cerebrospinal fluid lumbar puncture pressure measuring device according to claim 1, characterized in that: The flow guide port (3) and the liquid outlet (11) are arranged on two side surfaces of the solid needle core (202).

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