Lumbar puncture guide sleeve
By designing a lumbar puncture guide cannula, the problem of difficulty in determining and adjusting the puncture position during lumbar puncture surgery was solved, achieving precise positioning and stable fixation, thus improving surgical safety and operational efficiency.
Patent Information
- Application Number
- CN202422898609.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-27
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2034-11-27
AI Technical Summary
In current lumbar puncture procedures, it is difficult to effectively determine and adjust the puncture site, leading to improper puncture that increases patient pain and risk of injury. Furthermore, repeated adjustments further increase patient pain and risk of injury.
A lumbar puncture guide cannula is designed, including a cannula body, a main puncture tube, a spare puncture tube, a positioning baffle and a suction cup. By rotating the positioning baffle and sliding the positioning block, the new puncture point can be accurately located and marked, avoiding deviation and repeated puncture.
It achieves precise positioning and stable fixation of the puncture site, reduces the risk of improper puncture, and improves surgical safety and operational efficiency.
Smart Images
Figure CN223715784U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a lumbar puncture guide sleeve and belongs to the field of medical instruments. BACKGROUND
[0002] Lumbar puncture (LP) is a medical procedure commonly used for the diagnosis and treatment of diseases related to the central nervous system (brain and spinal cord). In a lumbar puncture procedure, determining and adjusting the puncture position is a critical step, which is directly related to the success of the procedure and the safety and recovery of the patient. Because a correct puncture position can minimize the risk of damage to surrounding important structures, such as blood vessels, nerve roots, and the spinal cord. Improper puncture can cause these complications, increasing the patient's pain and recovery time. If the puncture position needs to be adjusted, multiple attempts should also be avoided, which not only increases the patient's pain but also increases the risk of injury. Therefore, it is urgent to develop a tool that can assist medical personnel in effectively determining and adjusting the puncture position, thereby improving the safety of lumbar puncture procedures and reducing the occurrence of complications. SUMMARY
[0003] The utility model aims at the deficiency existing in the prior art, proposes a lumbar puncture guide sleeve, which assists medical personnel in effectively determining and adjusting the puncture position during a lumbar puncture procedure.
[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:
[0005] A lumbar puncture guide sleeve, comprising a cylindrical sleeve body, a main puncture tube is provided in the middle of the sleeve body, and a plurality of standby puncture tubes are tightly provided around the main puncture tube, a positioning baffle is provided on the upper surface of the sleeve body, the positioning baffle is rotationally connected with the sleeve body, a long hole is opened on the positioning baffle, the long hole can expose the main puncture tube and part of the standby puncture tubes outside the main puncture tube, a positioning block that can slide is provided on the long hole, a through hole I matched with the standby puncture tube is provided in the middle of the positioning block, a plurality of L-shaped supports are provided on the outside of the sleeve body, the bottoms of the L-shaped supports are connected with the same annular fixing block, and a plurality of suction cups are provided at the bottom of the annular fixing block.
[0006] Further, an annular sliding block is provided at the edge of the bottom of the positioning baffle, and a sliding groove matched with the annular sliding block is provided on the upper surface of the sleeve body. The annular sliding block is located in the sliding groove and can slide relative to the sliding groove, so that the positioning baffle and the sleeve body rotate relative to each other, realizing the rotational connection of the positioning baffle and the sleeve body.
[0007] Further, one side of the positioning baffle is provided with a cylinder and a pin, the pin passes through the cylinder, the outer side of the sleeve body is provided with an annular plate, a plurality of through holes II corresponding to the pin are arranged on the annular plate, and the annular plate is located above the L-shaped support. In this way, the positioning baffle can be effectively fixed, and the deviation of the positioning baffle is avoided to affect the puncture operation.
[0008] Further, the cylinder is internally provided with a moving block and a spring, one end of the spring is connected with the upper surface of the moving block, the other end of the spring is connected with the upper part of the cylinder, the pin passes into the cylinder from the upper end of the cylinder, then passes through the spring and the moving block in sequence, and finally passes out from the lower end of the cylinder, and the moving block and the pin are fixedly connected.
[0009] Further, the bottom of the annular fixing block is provided with an annular suction disc.
[0010] Further, the main puncture tube and the standby puncture tube are the same in diameter and are 1-5 mm in diameter, and the plurality of standby puncture tubes are closely arranged around the main puncture tube to form a honeycomb arrangement structure.
[0011] Compared with the prior art, the technical scheme has the following beneficial effects:
[0012] The lumbar puncture guiding sleeve is convenient for a doctor to determine and adjust a puncture position, is favorable for puncture operation, is fixedly stable, does not deviate, does not affect puncture operation, can accurately position and mark a new puncture point when the puncture point is adjusted, and avoids selection of an incorrect puncture point when re-puncturing. BRIEF DESCRIPTION OF DRAWINGS
[0013] Fig. 1 is a sectional view of the lumbar puncture guiding sleeve described in embodiment 1.
[0014] Fig. 2 is a top view of the sleeve body of the lumbar puncture guiding sleeve described in embodiment 1.
[0015] Fig. 3 is a top view of the positioning baffle of the lumbar puncture guiding sleeve described in embodiment 1.
[0016] Fig. 4 is a perspective view of the lumbar puncture guiding sleeve described in embodiment 2.
[0017] Fig. 5 is a top view of the sleeve body of the lumbar puncture guiding sleeve described in embodiment 2.
[0018] Reference numerals: 1-Cannula body, 2-Main puncture tube, 3-Spare puncture tube, 4-Positioning baffle, 5-Annular slider, 6-Positioning block, 7-Cylinder, 8-Pin, 9-Moving block, 10-Spring, 11-Annular plate, 12-L-shaped bracket, 13-Annular fixing block, 14-Suction cup, 15-Annular suction cup, 16-Slide groove. Detailed Implementation
[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments, but the present invention is not limited to the embodiments. Specific experimental conditions and methods not specified in the following embodiments are generally conventional methods well known to those skilled in the art.
[0020] Example 1: As shown in the attached document Figs. 1-3 As shown, a lumbar puncture guide cannula includes a cylindrical cannula body 1. A main puncture tube 2 is provided in the middle of the cannula body 1, and 11 spare puncture tubes 3 are tightly arranged around the main puncture tube 2. A positioning baffle 4 is provided on the upper surface of the cannula body 1. The positioning baffle 4 is rotatably connected to the cannula body 1. An elongated hole is opened on the positioning baffle 4, which can expose the main puncture tube 2 and part of the spare puncture tubes 3 outside the main puncture tube 2. A sliding positioning block 6 is provided on the elongated hole. A through hole I matching the spare puncture tubes 3 is provided in the middle of the positioning block 6. Four L-shaped supports 12 are provided on the outer side of the cannula body 1. The bottom of the L-shaped supports 12 is connected to the same annular fixing block 13. The bottom of the annular fixing block 13 is provided with four suction cups 14.
[0021] An annular slider 5 is provided at the bottom edge of the positioning baffle 4, and a groove 16 that cooperates with the annular slider 5 is provided on the upper surface of the sleeve body 1; a cylinder 7 and a pin 8 are provided on one side of the positioning baffle 4, and the pin 8 passes through the cylinder 7; an annular plate 11 is provided on the outer side of the sleeve body 1, and 12 through holes II corresponding to the pin 8 are provided on the annular plate 11; the annular plate 11 is located above the L-shaped bracket; a moving block 9 and a spring 10 are provided inside the cylinder 7, one end of the spring 10 is connected to the upper surface of the moving block 9, and the other end is connected to the upper part of the cylinder 7; the pin 8 is inserted from the upper end of the cylinder 7, then passes through the spring 10 and the moving block 9 in sequence, and finally exits from the lower end of the cylinder 7; the moving block 9 and the pin 8 are fixedly connected.
[0022] The method of using the lumbar puncture guide cannula described in this embodiment is as follows:
[0023] In use, the cannula body 1 is placed at the patient's lumbar puncture site and secured by the annular suction cup 15 to prevent displacement. Puncture is then performed through the main puncture tube 2 at the center. If the puncture position is found to be inaccurate and needs to be readjusted, a spare puncture tube 3 at a different location can be used. Specifically, first determine the displacement of the puncture point, then pull the pin 8 upwards to dislodge it from the through hole II. Next, rotate the positioning baffle 4 to align the notch of the positioning baffle 4 with the new puncture point, i.e., the newly selected spare puncture tube 3. Then, release the pin 8, allowing it to reset under the action of the spring 10 inside the cylinder 7 and lock into the through hole II of the annular plate 11, thus fixing the positioning baffle 4 and the cannula body 1 together. Next, slide the positioning block 6 to the newly selected spare puncture tube 3 for positioning. Finally, select a new puncture needle for puncture. After the puncture is completed, remove the puncture needle and lift the suction cup 14 to remove the device from the patient for recycling.
[0024] Example 2: As shown in the attached document Figs. 4-5 As shown, the difference between the lumbar puncture guide cannula described in this embodiment and the lumbar puncture guide cannula described in Embodiment 1 is only that the bottom of the annular fixing block 13 is provided with an annular suction cup 15; the main puncture tube 2 and the spare puncture tube 3 have the same diameter of 1.5mm, and the 11 spare puncture tubes 3 are closely arranged around the main puncture tube 2 to form a honeycomb arrangement structure.
[0025] This utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.
Claims
1. A lumbar puncture guide cannula, characterized by: The utility model provides a kind of multi-purpose puncture tube, including cylindrical sleeve body (1), the middle part of sleeve body (1) is equipped with main puncture tube (2), and the periphery of main puncture tube (2) is closely equipped with several spare puncture tubes (3), the upper surface of sleeve body (1) is equipped with positioning baffle (4), positioning baffle (4) is rotatably connected with sleeve body (1), a long hole is opened on positioning baffle (4), the long hole can expose main puncture tube (2) and the part spare puncture tube (3) outside main puncture tube (2), the long hole is equipped with a slidable positioning block (6), the middle part of positioning block (6) is equipped with through-hole I matched with spare puncture tube (3), the outside of sleeve body (1) is equipped with several L-shaped supports (12), the bottom of L-shaped support (12) is connected with same annular fixing block (13), the bottom of annular fixing block (13) is equipped with several suction cups (14).
2. The lumbar puncture guide cannula of claim 1, wherein: The edge of the bottom of positioning baffle (4) is equipped with annular sliding block (5), the upper surface of sleeve body (1) is equipped with sliding groove (16) matched with annular sliding block (5).
3. The lumbar puncture guide cannula of claim 1, wherein: One side of positioning baffle (4) is equipped with cylinder (7) and latch (8), latch (8) passes through cylinder (7), the outside of sleeve body (1) is equipped with annular plate (11), annular plate (11) is equipped with several through-holes II corresponding with latch (8), annular plate (11) is located above L-shaped support (12).
4. The lumbar puncture guide cannula of claim 3, wherein: Spring (10) is connected with the upper surface of moving block (9) at one end, and is connected with the upper part of cylinder (7) at the other end, latch (8) is successively inserted from the upper end of cylinder (7), passes through spring (10) and moving block (9), and finally is inserted from the lower end of cylinder (7);The moving block (9) and the latch (8) are fixedly connected.
5. The lumbar puncture guide cannula of claim 1, wherein: The bottom of annular fixing block (13) is equipped with annular suction cup (15).
6. The lumbar puncture guide cannula of claim 1, wherein: The diameter of main puncture tube (2) and spare puncture tube (3) is same and is 1-5mm, the several spare puncture tubes (3) are closely arranged around main puncture tube (2) to form honeycomb arrangement structure.