Flow-adjustable lumbar puncture needle

Abstract

The utility model discloses a flow-adjustable lumbar puncture needle. A flow-adjustable lumbar puncture needle comprises a needle head and a connecting tube and is characterized in that a sleeve is installed in the connecting tube in a threaded mode, the two ends of the sleeve are communicated, a plug is arranged at one end of the sleeve and matched with the needle head, a plurality of through holes are formed in the surface of the sleeve, and a connector is arranged at an opening of the other end of the sleeve. According to the flow-adjustable lumbar puncture needle, the sleeve is arranged to control outflow of cerebrospinal fluid, compared with the prior art, the flow-adjustable lumbar puncture needle can be opened when pressure is measured and samples are collected by controlling outflow of the cerebrospinal fluid, the flow-adjustable lumbar puncture needle is closed in other time, and waste of the cerebrospinal fluid and pain of a patient in treatment are reduced.

Description

Technical Field

[0001] This utility model relates to the field of medical puncture equipment technology, and in particular to an adjustable flow lumbar puncture needle. Background Technology

[0002] A lumbar puncture needle is a medical device specifically used for lumbar puncture. Its main purpose is to obtain cerebrospinal fluid samples. Cerebrospinal fluid is a colorless and transparent liquid that exists in the ventricles and subarachnoid space of the brain. It plays a role in protecting, supporting and nourishing the brain and spinal cord. By aspirating cerebrospinal fluid through a lumbar puncture needle, the cellular components (such as white blood cells and red blood cells) can be detected and used to diagnose infectious diseases of the central nervous system.

[0003] In clinical practice, lumbar puncture is generally performed to measure the pressure of cerebrospinal fluid and to take samples of cerebrospinal fluid for testing. Cerebrospinal fluid is a clear, colorless, and transparent liquid that flows out after puncture.

[0004] In existing technologies, the puncture needle does not have a valve body, and the cerebrospinal fluid sample that flows out after puncture is wasted because it cannot be collected in time, increasing the patient's treatment suffering.

[0005] Therefore, it is necessary to provide an adjustable flow lumbar puncture needle to solve the above-mentioned technical problems. Utility Model Content

[0006] In order to overcome the defects of the prior art, this utility model provides an adjustable flow lumbar puncture needle that can control the outflow of cerebrospinal fluid after puncture.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] An adjustable flow lumbar puncture needle includes a needle tip and a connecting tube, characterized in that a sleeve is threaded into the connecting tube, the sleeve is open at both ends, a plug is provided at one end of the sleeve, the plug is adapted to the needle tip, a plurality of through holes are provided on the surface of the sleeve, and a connector is provided at the opening of the other end of the sleeve.

[0009] Preferably, a flexible hose is connected to the connector.

[0010] Preferably, the hose is provided with sockets at both ends, the inner diameter of the socket is the same as the outer diameter of the connector, and the socket at one end of the hose is connected to the connector in a socket-type connection.

[0011] Preferably, the outer wall of the sleeve is provided with a limiting block.

[0012] Preferably, the plug is made of rubber.

[0013] Preferably, the limiting block has a quadrilateral cross-section, and the sidewall of the limiting block is provided with stripes.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] (1) This utility model controls the outflow of cerebrospinal fluid by setting a sleeve. Compared with the prior art, by controlling the outflow of cerebrospinal fluid, the sleeve can be opened when measuring pressure and collecting samples, and closed at other times, reducing the waste of cerebrospinal fluid and the pain of patient treatment.

[0016] (2) By setting up a flexible tube, the pressure measurement and collection operation of cerebrospinal fluid by medical staff can be transferred from the sleeve end to the receiving end. The advantage of doing so is that when the needle is located in the patient's body, when the pressure measuring device is installed on the connecting tube on the needle and the connecting head of the sleeve, the needle will inevitably swing slightly, which will increase the patient's pain. The flexible tube is soft and has less impact on the needle during operation.

[0017] (3) The limiting block of this utility model can be used as the hand part for the operator to twist the sleeve. The quadrilateral shape is convenient for the operator to operate, and the stripes can increase the friction between the limiting block and the finger. Attached Figure Description

[0018] Figure 1 A schematic diagram of the adjustable flow lumbar puncture needle provided by this utility model;

[0019] Figure 2 A schematic diagram of the adjustable flow lumbar puncture needle provided by this utility model;

[0020] Figure 3 This is a schematic diagram of the adjustable flow lumbar puncture needle provided by this utility model.

[0021] The corresponding names of the reference numerals in the attached drawings are as follows: 101, needle; 102, connecting tube; 103, sleeve; 104, plug; 105, through hole; 106, limiting block; 107, connector; 108, socket; 109, hose. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments. The embodiments of the present invention include, but are not limited to, the following embodiments.

[0023] like Figure 1-3 As shown, the adjustable flow lumbar puncture needle provided by this utility model includes: a needle 101 and a connecting tube 102. The needle 101 is the part that punctures the human body, and the needle 101 is installed on the connecting tube 102. This is the basic structure of existing puncture needles. The feature of this application is that a sleeve 103 is installed in the internal thread of the connecting tube 102. The sleeve 103 is open at both ends and has a cavity in the middle, and its shape is as follows. Figure 3As shown, one end of the sleeve 103 is provided with a plug 104, which is adapted to the needle 101. The length of the sleeve 103 is the same as the length of the connecting tube 102. That is, when the sleeve 103 is screwed into the connecting tube 102, the plug 104 at the end of the sleeve 103 can enter the needle 101 and seal the channel of the needle 101. At this time, the sleeve 103 is in a sealed state to the needle 101. The surface of the sleeve 103 is provided with several through holes 105. When the sleeve 103 retracts in the connecting tube 102, the plug 104 at the end of the sleeve 103 disengages from the channel of the needle 101. The other end of the sleeve 103 is provided with a connector 1. 07. When using, first perform a lumbar puncture on the patient according to the normal puncture procedure, then screw the sleeve 103 into the connecting tube 102 until the plug 104 seals the needle 101 channel. Since the needle 101 channel is sealed at this time, cerebrospinal fluid cannot flow out further. When it is necessary to measure pressure and collect cerebrospinal fluid, screw the sleeve 103 in the opposite direction. During this process, the plug 104 at the end of the sleeve 103 gradually moves away from the needle 101 channel. After the needle 101 channel is opened, cerebrospinal fluid enters the needle 101 channel, then enters the sleeve 103 through the through hole 105, and finally flows out from the opening at the end of the sleeve 103.

[0024] By setting up sleeve 103, the outflow of cerebrospinal fluid can be controlled. Compared with the existing technology, by controlling the outflow of cerebrospinal fluid, the sleeve can be opened when measuring pressure and collecting samples, and closed at other times, reducing the waste of cerebrospinal fluid and the pain of patient treatment.

[0025] Second embodiment:

[0026] like Figure 1-2 As shown, a flexible tube 109 is connected to the connector 107. The flexible tube 109 is made of medical-grade soft plastic, similar to the material of intravenous infusion tubing. The flexible tube 109 has a socket 108 at both ends. The inner diameter of the socket 108 is the same as the outer diameter of the connector 107. Both are cylindrical. The socket 108 at one end of the flexible tube 109 is connected to the connector 107 in a socket-type connection.

[0027] By setting up the tubing 109, the pressure measurement and collection of cerebrospinal fluid by medical staff can be transferred from the sleeve 103 end to the receiver 108 end. The advantage of doing so is that when the needle 101 is located inside the patient's body, and the pressure measuring device is installed on the connecting tube 102 on the needle 101 and the connector 107 on the sleeve 103, the needle 101 will inevitably swing slightly, which will increase the patient's pain. However, the tubing 109 is soft and has less impact on the needle 101 during operation.

[0028] Third embodiment:

[0029] like Figure 3As shown, a limiting block 106 is provided on the outer wall of the sleeve 103. The limiting block 106 is fixedly installed on the sleeve 103 to limit the position of the sleeve 103 inside the connecting pipe 102, and to prevent the sleeve 103 from being over-tightened, which would cause the connection between the sleeve 103 and the connecting pipe 102 to be too tight and inconvenient to untighten.

[0030] Fourth embodiment:

[0031] The plug 104 is made of rubber. When the rubber plug 104 is squeezed by the inner wall of the needle 101, it deforms, thereby forming a better sealing effect.

[0032] Fifth embodiment:

[0033] The limiting block 106 has a quadrilateral cross-section and stripes on its sidewall. When in use, the limiting block 106 can be used as a handhold for the operator to twist the sleeve 103. The quadrilateral shape makes it easy for the operator to operate, and the stripes can increase the friction between the limiting block 106 and the fingers.

[0034] Working principle: First, the patient's lumbar spine is punctured according to the normal puncture procedure. Then, the sleeve 103 is screwed into the connecting tube 102 until the plug 104 seals the needle 101 channel. Since the needle 101 channel is sealed at this time, cerebrospinal fluid cannot flow out further. When it is necessary to measure pressure and collect cerebrospinal fluid, the sleeve 103 is screwed in the opposite direction. During this process, the plug 104 at the end of the sleeve 103 gradually moves away from the needle 101 channel. After the needle 101 channel is opened, cerebrospinal fluid enters the needle 101 channel, then enters the sleeve 103 through the through hole 105, and finally flows out from the opening at the end of the sleeve 103.

[0035] The above embodiments are merely one of the preferred embodiments of this utility model and should not be used to limit the scope of protection of this utility model. Any modifications or refinements made to the main design concept and spirit of this utility model that are not of substantial significance, but solve the same technical problem as this utility model, should be included within the scope of protection of this utility model.

Claims

1. An adjustable flow lumbar puncture needle comprising: The needle (101) and the connecting pipe (102) are characterized in that the connecting pipe (102) is internally threaded with a sleeve (103), both ends of the sleeve (103) are through, one end of the sleeve (103) is provided with a plug (104), the plug (104) is matched with the needle (101), a plurality of through holes (105) are arranged on the surface of the sleeve (103), and the other end of the sleeve (103) is provided with a connecting head (107).

2. The flow adjustable spinal needle of claim 1, wherein, The connecting head (107) is connected with a hose (109).

3. The adjustable flow lumbar puncture needle of claim 2, wherein, Both ends of the hose (109) are provided with receiving heads (108), the inner diameter of the receiving head (108) is same as the outer diameter of the connecting head (107), and the receiving head (108) at one end of the hose (109) is connected with the connecting head (107) in a socket type.

4. The flow adjustable spinal needle of claim 1, wherein, The outer wall of the sleeve (103) is provided with a limiting block (106).

5. The flow adjustable spinal needle of claim 1, wherein, The plug (104) is made of rubber.

6. The adjustable flow lumbar puncture needle of claim 4, wherein, The cross section of the limiting block (106) is quadrilateral, and the side wall of the limiting block (106) is provided with stripes.

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