Specimen puncture sampler for neurology department

Abstract

The invention discloses a specimen puncture sampler for the neurology department. The specimen puncture sampler comprises a fixing plate, a first shell is installed on one side of the fixing plate, a sliding block is slidably connected to the inner side wall of the first shell, a connecting rod is installed at the top of the sliding block, a second shell is installed at the top of the connecting rod, a rotary valve is arranged in the second shell, and a second communicating pipe communicates with the top of the second shell. The top of the communicating pipe II is communicated with a pressure measuring pipe; through the arrangement of the rotary valve and the puncture needle, the first through hole in the rotary valve is communicated with the puncture needle and used for puncture and cerebrospinal fluid drainage, the second through hole is communicated with the pressure measuring tube and the sample collecting test tube, an operator only needs to control the rotary valve through the rotary handle in the handle, and the steps of pressure measurement and sample step-by-step collection can be smoothly switched; and the problems of long time consumption, sample pollution loss risk and operation interference caused by repeated instrument replacement in the traditional step-by-step operation are thoroughly eliminated.

Description

Technical Field

[0001] This invention specifically relates to a neurological specimen puncture and sampling device, belonging to the field of medical device technology. Background Technology

[0002] In neurological clinical practice, procedures such as lumbar puncture and ventricular puncture are key techniques for obtaining cerebrospinal fluid (CSF) specimens, which are of great significance for the diagnosis of central nervous system infections, hemorrhages, tumors, and immune diseases. Traditional puncture sampling procedures have several technical drawbacks: First, the operation process is fragmented, requiring separate switching of instruments for puncture, pressure measurement, and specimen collection, which not only prolongs the operation time and increases patient discomfort and infection risks, but may also lead to sample contamination or loss; second, the accuracy of intracranial pressure monitoring is insufficient, and simple pressure measuring tubes lack a stable fixation mechanism, making it easy for changes in body position or operational interference to cause reading distortion, affecting the judgment of intracranial high / low pressure status; third, the safety of specimen handling is low, open transfer of samples is prone to iatrogenic contamination, and the lack of an immediate sealing design for the puncture needle poses a risk of CSF leakage. In summary, a highly integrated solution with low operational risks is needed. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing a neurological specimen puncture and sampling device that achieves high integration and reduces operational difficulty.

[0004] A neurological specimen puncture and sampling device, including a fixation plate; A housing 1 is installed on one side of the fixed plate. A slider is slidably connected to the inner wall of the housing 1. A connecting rod is installed on the top of the slider. A housing 2 is installed on the top of the connecting rod. A rotary valve is provided inside the housing 2. A connecting pipe 2 is connected to the top of the housing 2. A pressure measuring pipe is connected to the top of the connecting pipe 2. A connecting pipe 1 is connected to the outer wall of the housing 2. A test tube is connected to the bottom of the connecting pipe 1. A handle is installed on one side of the housing 2. A puncture needle is installed on the side of the housing 2 away from the handle. The outer wall dimension of the rotary valve is the same as the inner wall dimension of the housing 2.

[0005] Furthermore, a rotating rod is installed on one side of the rotary valve, and a handle is installed at the end of the rotating rod away from the rotary valve. The rotating rod is located inside the handle.

[0006] Furthermore, a breathing valve is connected to the top of the first connecting pipe, and holes are opened at the top of both the breathing valve and the pressure measuring pipe. A filter membrane is installed inside the breathing valve.

[0007] Furthermore, the outer wall of the pressure measuring tube is marked with scale values.

[0008] Furthermore, the fixing plate is fitted with attaching foam on the side away from the housing.

[0009] Furthermore, a through hole one is provided on one side of the rotary valve, and a through hole two is provided on the outer wall of the through hole one. The dimensions of the connecting pipe one, the connecting pipe two, and the through hole two are the same, and the dimensions of the through hole one are the same as those of the puncture needle.

[0010] Furthermore, a puncture port is provided on the fixing plate, and the puncture needle passes through the puncture port.

[0011] Beneficial effects: I. The present invention, through the setting of a rotary valve and a puncture needle, has a through hole one on the rotary valve connected to the puncture needle for puncture and cerebrospinal fluid drainage, and a through hole two connected to the pressure measuring tube and the specimen collection tube respectively. The operator only needs to operate the rotary valve by turning the handle inside the handle to smoothly switch between pressure measurement and specimen step collection steps, completely eliminating the time-consuming process, risk of sample contamination and loss, and operational interference caused by the repeated replacement of instruments in traditional step-by-step operation. Second, the present invention, through the setting of the fixing plate, forms a stable whole with the connecting rod, slider, housing and fixing plate. In particular, the fixing plate combined with the attached foam can reliably fix the entire device to the patient's back to form an operating plane. The setting of the slider facilitates the operator to perform stable puncture operation, and at the same time provides solid support for the pressure measuring tube, which greatly overcomes the problems of pressure measuring tube shaking and reading distortion caused by changes in patient position or operation interference. The clear scale value on the outer wall ensures the accuracy and reliability of intracranial pressure monitoring results. Attached Figure Description

[0012] Figure 1 This is a front view of the present invention. Figure 2 This is a schematic diagram of the rear structure of the present invention; Figure 3 This is a schematic diagram of the internal structure of shell two; Figure 4 This is a schematic diagram of the overall structure of the rotary valve.

[0013] In the diagram: 101, Fixing plate; 102, Housing 1; 103, Slider; 104, Connecting rod; 105, Housing 2; 106, Handle; 107, Rotary handle; 108, Pressure measuring tube; 109, Connecting tube 1; 110, Breathing valve; 111, Test tube; 112, Puncture needle; 113, Rotating rod; 114, Rotary valve; 115, Through hole 1; 116, Through hole 2; 117, Puncture port; 118, Attached foam; 119, Connecting tube 2. Detailed Implementation

[0014] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0015] Please see Figure 1-4 As shown, a neurological specimen puncture and sampling device includes a fixation plate 101; A housing 102 is installed on one side of the fixed plate 101. A slider 103 is slidably connected to the inner wall of the housing 102. A connecting rod 104 is installed on the top of the slider 103. A housing 2 105 is installed on the top of the connecting rod 104. A rotary valve 114 is provided inside the housing 2 105. A connecting pipe 2 119 is connected to the top of the housing 2 105. A pressure measuring pipe 108 is connected to the top of the connecting pipe 2 119. A connecting pipe 1 109 is connected to the outer wall of the housing 2 105. A test tube 111 is connected to the bottom of the connecting pipe 1 109. A handle 106 is installed on one side of the housing 2 105. A puncture needle 112 is installed on the side of the housing 2 105 away from the handle 106. The outer wall dimension of the rotary valve 114 is the same as the inner wall dimension of the housing 2 105.

[0016] As a technical optimization of the present invention, a rotating rod 113 is installed on one side of the rotary valve 114, and a handle 107 is installed at the end of the rotating rod 113 away from the rotary valve 114. The rotating rod 113 is located inside the handle 106.

[0017] As a technical optimization of the present invention, the top of the connecting pipe 109 is connected to a breathing valve 110. Both the top of the breathing valve 110 and the pressure measuring pipe 108 are provided with holes, and a filter membrane is installed inside the breathing valve 110.

[0018] As a technical optimization of the present invention, the outer wall of the pressure measuring tube 108 is marked with scale values.

[0019] As a technical optimization of the present invention, the fixing plate 101 is provided with attaching foam 118 on the side away from the housing 102.

[0020] As a technical optimization of the present invention, a through hole 115 is provided on one side of the rotary valve 114, and a through hole 2 116 is provided on the outer wall of the through hole 115. The dimensions of the connecting pipe 109, the connecting pipe 2 119 and the through hole 2 116 are the same, and the dimensions of the through hole 115 and the puncture needle 112 are the same.

[0021] As a technical optimization of the present invention, a puncture port 117 is provided on the fixing plate 101, and the puncture needle 112 passes through the puncture port 117.

[0022] Working principle: Before operation, the device is firmly adhered to the skin around the predetermined puncture point on the patient's back via the fixing plate 101 and the attaching foam 118 on its back. This forms a stable operating plane and support base. The puncture needle 112 is pre-installed at the front end of the housing 105. During operation, the operator presses the fixing plate 101 with their left hand, making the attaching foam 118 adhere tightly to the patient's back skin to form a displacement-resistant plane. The right hand holds the handle 106, and the puncture trajectory is controlled by the linear guide of the slider 103. At this time, the through hole 115 of the rotary valve 114 is completely aligned and connected with the lumen of the puncture needle 112. At the same time, the through hole 116 on the rotary valve 114 is in a non-connected state. After successfully puncturing the target cavity, cerebrospinal fluid is released. The cerebrospinal fluid flows naturally into the puncture needle 112 and is temporarily drained and collected in the chamber of the rotary valve 114 or its initial channel through the through-hole 115. This stage is mainly used to confirm successful puncture and establish a drainage path. When intracranial pressure measurement is required, the operator does not need to change instruments. Instead, they simply operate the handle 107 inside the handle 106 to rotate the lever 113 and the rotary valve 114. At this time, the connection between the through-hole 115 of the rotary valve 114 and the puncture needle 112 remains unchanged, ensuring continuous inflow of cerebrospinal fluid. The through-hole 116 of the rotary valve 114 is precisely aligned and connected to the connecting tube 119 at the top of the housing 105. The upper end of the connecting tube 119 is connected to the pressure measuring tube 108. The fluid then flows through through-hole 116 and connecting tube 119 into the vertically placed pressure measuring tube 108. The operator reads the clearly marked scale value on the outer wall of the pressure measuring tube 108 to obtain an accurate and stable hydrostatic pressure value of the cerebrospinal fluid. The hole at the top of the pressure measuring tube 108 is open to the atmosphere, ensuring that the pressure measurement is open. When it is necessary to collect a specimen, the operator operates the handle 107 again to rotate the rotary valve 114 to another preset angle. At this time, the through-hole 115 of the rotary valve 114 is still connected to the puncture needle 112. The through-hole 116 of the rotary valve 114 is switched to be aligned with and connected to the connecting tube 109 on the side wall of the housing 105. The lower end of the connecting tube 109 is connected to the test tube 111. The fluid flows through through-hole 115, the rotary valve 114 chamber, through-hole 116, and connecting tube 109, directly into the test tube 111 below. The breathing valve 110 at the top of the connecting tube 109 allows air to enter the system to maintain pressure balance. At the same time, the filter membrane effectively blocks external contaminants from entering the specimen flow path, creating a relatively closed system during the transfer process, which greatly reduces the risk of iatrogenic contamination of the specimen. As needed, multiple specimens can be collected in stages into different test tubes 111 by controlling the rotary valve 114. After completing all sampling steps, the operator can turn the rotary valve 114 back to the initial position. Finally, the operator smoothly pulls out the puncture needle 112 to release the adhesion between the fixation plate 101 and the patient's skin.

[0023] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims. Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A neurological specimen puncture sampler, comprising a fixed plate (101); characterized in that: One side of the fixed plate (101) is provided with a shell one (102), the inner side wall of the shell one (102) is slidably connected with a sliding block (103), the top of the sliding block (103) is provided with a connecting rod (104), the top of the connecting rod (104) is provided with a shell two (105), the inside of the shell two (105) is provided with a rotary valve (114), the top of the shell two (105) is communicated with a communicating pipe two (119), the top of the communicating pipe two (119) is communicated with a pressure measuring tube (108), the outer side wall of the shell two (105) is communicated with a communicating pipe one (109), the bottom of the communicating pipe one (109) is communicated with a test tube (111), one side of the shell two (105) is provided with a handle (106), the side of the shell two (105) away from the handle (106) is provided with a puncture needle (112), the outer side wall of the rotary valve (114) is consistent with the inner side wall of the shell two (105) in size.

2. The neurology specimen puncture sampler of claim 1, wherein: One side of the rotary valve (114) is provided with a rotating rod (113), one end of the rotating rod (113) away from the rotary valve (114) is provided with a rotating handle (107), the rotating rod (113) is located in the inside of the handle (106).

3. A neurological specimen puncture sampler as defined in claim 2, wherein: The top of the communicating pipe one (109) is communicated with a breathing valve (110), the top of the breathing valve (110) and the pressure measuring tube (108) are both provided with holes, the inside of the breathing valve (110) is provided with a filter membrane.

4. A neurological specimen puncture sampler as defined in claim 3, wherein: The outer side wall of the pressure measuring tube (108) is marked with a scale value.

5. A neurological specimen puncture sampler as defined in claim 4, wherein: The side of the fixed plate (101) away from the shell one (102) is provided with an attached foam (118).

6. A neurological specimen puncture sampler as defined in claim 5, wherein: One side of the rotary valve (114) is provided with a through hole one (115), the outer side wall of the through hole one (115) is provided with a through hole two (116), the size of the communicating pipe one (109), the communicating pipe two (119) and the through hole two (116) is consistent, the size of the through hole one (115) and the puncture needle (112) is consistent.

7. A neurological specimen puncture sampler as defined in claim 6, wherein: The fixed plate (101) is provided with a puncture port (117), the puncture needle (112) penetrates through the puncture port (117).

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