An integrated lumbar puncture device

Abstract

The utility model discloses an integral type waist -wearing cerebrospinal fluid sampling device, especially relates to puncture sampling device, including the puncture part of one end fixed installation handheld part and the needle core of one end fixed setting has the inlay part, the needle core is by the handheld part and is worn to the inside of puncture part, and inlay part part inlays on the handheld part, fixedly connected with the threaded connection end on the handheld part, the threaded connection end is threadedly connected with vacuum pipe, under the default state, the inlay part blocks the port of threaded connection end this utility model cerebrospinal fluid's collection is in the non -closed process, all are not exposed to air.

Description

Technical Field

[0001] This utility model relates to a puncture sampling device, specifically an integrated lumbar puncture cerebrospinal fluid sampling device. Background Technology

[0002] Lumbar puncture is used 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. The instruments used mainly include a lumbar puncture needle with a core.

[0003] In clinical practice, a lumbar puncture needle is first inserted through the intervertebral space, then connected to a pressure measuring instrument to measure pressure, and finally, the dripping cerebrospinal fluid is collected in a test tube. The lumbar puncture needle, pressure measuring instrument, and collection test tube are separate from each other, and the pressure measurement and cerebrospinal fluid collection are non-closed processes, all of which are exposed to the air. Utility Model Content

[0004] The purpose of this invention is to provide an integrated lumbar puncture cerebrospinal fluid sampling device to solve the above-mentioned problems.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an integrated lumbar puncture cerebrospinal fluid sampling device, comprising a puncture part with a handheld part fixedly installed at one end and a needle core with an inlay part fixedly installed at the other end. The needle core is inserted through the handheld part into the puncture part, and the inlay part is partially inlaid on the handheld part. A threaded connection end is fixedly connected to the handheld part, and a vacuum tube is threadedly connected to the threaded connection end.

[0006] By default, the inlay portion blocks the port of the threaded connection end.

[0007] Preferably, a cylindrical limiting part is fixedly installed on the temporal part of the handheld part, and a through hole for the needle core to pass through is opened in the center of the cylindrical limiting part;

[0008] The inner wall of the through hole is provided with an annular cavity groove extending into the cylindrical limiting part;

[0009] The needle core is fixedly provided with a limiting element that moves within the annular cavity.

[0010] Preferably, a silicone rubber sealing ring that abuts against the outer wall of the needle core is fixedly installed inside the port on the side of the through hole away from the puncture part.

[0011] Preferably, the inlay portion is a silicone block.

[0012] Preferably, the handle is a rigid, transparent plastic groove.

[0013] Preferably, the sidewall of the needle core is provided with a drainage gap groove.

[0014] Preferably, the sidewall of the needle core is provided with an annular overflow groove that communicates with the drainage gap groove and is located near the inlay portion.

[0015] Preferably, a floating island stamping rod is fixedly installed inside the threaded connection end, and the floating island stamping rod includes a through pipe rod that is inserted into the vacuum tube.

[0016] In the above technical solution, the integrated lumbar puncture cerebrospinal fluid sampling device provided by this utility model has the following beneficial effects: a vacuum tube is added to the original handheld part, and then the vacuum tube is blocked by the inserted inlay part. When it is necessary to extract the sampling fluid, it is only necessary to pull the inlay part outward a predetermined distance, and then the vacuum tube is connected to the inside of the puncture site, thereby avoiding the situation of exposure during the sampling process. Pressure measurement is performed through the vacuum tube and detected by a pressure sensor. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 A schematic diagram of the overall structure provided for an embodiment of this utility model;

[0019] Figure 2 Provided for the embodiments of this utility model Figure 1 A schematic diagram of the cross-sectional structure;

[0020] Figure 3 Provided for the embodiments of this utility model Figure 2 First enlarged structural diagram

[0021] Figure 4 Provided for the embodiments of this utility model Figure 2 The second enlarged structural diagram.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Handheld part; 2. Puncture part; 3. Embedding part; 4. Needle core; 41. Limiting link; 42. Drainage gap groove; 43. Annular overflow groove; 5. Vacuum tube; 6. Cylindrical limiting part; 61. Through hole; 62. Annular cavity groove; 7. Silicone rubber sealing ring; 8. Floating island puncture rod; 9. Threaded connection end. Detailed Implementation

[0024] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0025] like Figure 1-3 As shown, an integrated lumbar puncture cerebrospinal fluid sampling device includes a puncture part 2 with a handheld part 1 fixedly installed at one end and a needle core 4 with an inlay part 3 fixedly installed at the other end. The needle core 4 passes through the handheld part 1 into the puncture part 2, and the inlay part 3 is partially inlaid on the handheld part 1. A threaded connection end 9 is fixedly connected to the handheld part 1, and a vacuum tube 5 is threadedly connected to the threaded connection end 9.

[0026] By default, the inlay part 3 blocks the port of the threaded connection end 9.

[0027] Specifically, in this embodiment, the inlay part 3 is a soft silicone block, and the handle part 1 is a rigid transparent plastic groove; the two are inlaid together. To pull out the inlay part 3, medical personnel need to hold the handle part 1 and then pull it out.

[0028] Secondly, the aforementioned handheld part 1 and vacuum tube 5 are integrally formed and are both transparent plastic parts.

[0029] In the above technology, a threaded connection end 9 is added to the original handheld part 1, and then the vacuum tube 5 is blocked by the inserted inlay part 3. When it is necessary to extract the sampling liquid, the inlay part 3 only needs to be pulled outward a predetermined distance, and then the threaded connection end 9 is connected to the inside of the puncture part 2, thereby avoiding the situation of exposure during the sampling process.

[0030] As a further embodiment of this utility model, a cylindrical limiting part 6 is fixedly installed on the temporal part of the handheld part 1, and a through hole 61 for the needle core 4 to pass through is opened in the center of the cylindrical limiting part 6. An annular cavity groove 62 extending into the cylindrical limiting part 6 is opened on the inner wall of the through hole 61, and a limiting link 41 that moves within the annular cavity groove 62 is fixedly provided on the needle core 4.

[0031] Specifically, the cylindrical limiting part 6 is pre-cast and fixed onto the needle core 4, and then the cylindrical limiting part 6 is inserted into the bottom of the inner side of the handheld part 1 and fixed into one piece by thermoplastic.

[0032] Furthermore, when the inlay part 3 is pulled out, the movement of the limiting link 41 is blocked by the annular cavity groove 62, resulting in a noticeable pause. At this time, pulling out the inlay part 3 stops, and the inlay part 3 is no longer blocking the vacuum tube 5, so the vacuum tube 5 is connected to the inside of the puncture part 2.

[0033] As a further embodiment of this utility model, a silicone rubber sealing ring 7 that abuts against the outer wall of the needle core 4 is fixedly installed inside the port of the through hole 61 on the side away from the puncture part 2.

[0034] Specifically, the silicone rubber sealing ring 7 is deformed by the pressure of the needle core 4 to form a seal, and it also forms a sealing fit with the inlay part 3 and the handheld part 1. The two together form a double sealing structure.

[0035] As a further embodiment of this utility model, the side wall of the needle core 4 is provided with a drainage gap groove 42. The side wall of the needle core 4 is provided with annular overflow grooves 43 that communicate with the drainage gap grooves 42 and are distributed near the inlay part 3.

[0036] Specifically, in the embodiment, when the insert part 3 is pulled out, the movement of the limiting link 41 is blocked by the annular cavity groove 62, and there is a clear feeling of stopping. At this time, the annular overflow groove 43 is completely exposed, and the sampled liquid is discharged into the vacuum tube 5 through the annular overflow groove 43.

[0037] As a further embodiment of this utility model, combined with Figure 4 As shown, a floating island stud rod 8 is fixedly installed inside the threaded connection end 9. The floating island stud rod 8 includes a through pipe rod that is inserted into the vacuum tube 5.

[0038] Specifically, the floating island puncture rod 8 includes an annular component, with a through-tube rod at its center. The two are fixedly connected as one unit via a connecting rod. During operation, after pulling the inlay part 3 outwards a predetermined distance, the threaded connection end 9 connects to the interior of the puncture part 2. Then, the vacuum tube 5 rotates clockwise one revolution, causing the through-tube rod to insert into the interior of the vacuum tube 5, thus activating the vacuum tube 5. After sampling, the vacuum tube 5 rotates counterclockwise three revolutions, causing the through-tube rod to disengage from the interior of the vacuum tube 5, and the entire vacuum tube 5 detaches from the threaded connection end 9.

[0039] It should be noted that the vacuum tube 5 mentioned above is a transparent tube, and its structure is consistent with that of the vacuum collector for venous blood collection. The outer surface of the vacuum tube 5 is provided with scale lines.

[0040] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An integrated lumbar puncture cerebrospinal fluid sampling device, comprising a puncture part (2) with a handle (1) fixedly mounted at one end and a needle core (4) with an inlay part (3) fixedly mounted at the other end, wherein the needle core (4) passes through the handle (1) into the puncture part (2), and the inlay part (3) is partially inlaid on the handle (1), characterized in that, The handheld part (1) is fixedly connected to a threaded connection end (9), and the threaded connection end (9) is threadedly connected to a vacuum tube (5). By default, the inlay part (3) blocks the port of the threaded connection end (9).

2. The integrated lumbar puncture cerebrospinal fluid sampling device according to claim 1, characterized in that, A cylindrical limiting part (6) is fixedly installed on the temporal part of the handheld part (1), and a through hole (61) is opened in the center of the cylindrical limiting part (6) for the needle core (4) to pass through. The inner wall of the through hole (61) is provided with an annular cavity groove (62) extending into the cylindrical limiting part (6). The needle core (4) is fixedly provided with a limiting link (41) that moves within the annular cavity (62).

3. The integrated lumbar puncture cerebrospinal fluid sampling device according to claim 2, characterized in that, A silicone rubber sealing ring (7) that abuts against the outer wall of the needle core (4) is fixedly installed inside the port of the through hole (61) on the side away from the puncture part (2).

4. The integrated lumbar puncture cerebrospinal fluid sampling device according to claim 1, characterized in that, The inlay part (3) is a silicone soft block.

5. The integrated lumbar puncture cerebrospinal fluid sampling device according to claim 1, characterized in that, The handheld part (1) is a rigid transparent plastic groove.

6. The integrated lumbar puncture cerebrospinal fluid sampling device according to claim 1, characterized in that, The needle core (4) has a drainage gap groove (42) on its side wall.

7. The integrated lumbar puncture cerebrospinal fluid sampling device according to claim 6, characterized in that, The side wall of the needle core (4) is provided with an annular overflow groove (43) that communicates with the drainage gap groove (42) and is distributed near the inlay part (3).

8. The integrated lumbar puncture cerebrospinal fluid sampling device according to claim 1, characterized in that, A floating island stud rod (8) is fixedly installed inside the threaded connection end (9), and the floating island stud rod (8) includes a through pipe rod that is inserted into the vacuum tube (5).

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