Lumbar puncture needle provided with scales and convenient to fix

Abstract

The utility model belongs to the technical field of lumbar puncture needles, and particularly relates to a graduated lumbar puncture needle convenient to fix, which comprises a trocar, a graduated groove is arranged at the lower end of the trocar, a needle cap is movably mounted at the top of the trocar, and a fixing device is arranged on the outer side of the trocar. The fixing device comprises a first plastic sliding block, a second plastic sliding block, a protruding block, a mounting block, a clamping rod, a latex pad, a side plate and a skin application. According to the lumbar puncture needle with the scales and convenient to fix, the needle inserting depth during lumbar puncture can be simply and conveniently determined, the puncture depth can be preset according to the positions of the first plastic sliding block and the second plastic sliding block, unnecessary tissue damage caused by too deep puncture is prevented, meanwhile, the puncture needle can be simply and conveniently fixed to the skin surface, and the puncture needle is convenient to use. Shaking and minimally invasive injury are reduced, and the problems that in the background technology, the exact depth of needle inserting cannot be determined, the lumbar puncture needle can swing due to the movement of a patient, and larger tissue damage and even cerebrospinal fluid leakage can be caused are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to lumbar puncture needle technical field, concretely is a kind of lumbar puncture needle with scale and it is easy to fix. BACKGROUND

[0002] Lumbar puncture is the common clinical operation that a long lumbar puncture needle is inserted into subarachnoid space through lumbar intervertebral space, and part of cerebrospinal fluid is extracted for examination or injection of drugs, which is the most basic surgical operation in neurology department, and has very important clinical value.

[0003] In the current lumbar puncture operation process, the operator mainly holds the lumbar puncture needle and inserts the needle according to experience and hand feeling, and the exact depth of needle insertion cannot be determined, so that the operator often fails to insert the needle too deeply to penetrate the contralateral subarachnoid space or insert the needle too shallowly to enter the subarachnoid space, which leads to surgical failure.

[0004] Therefore, it is urgent to provide a lumbar puncture needle with scale and easy to fix. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a lumbar puncture needle with scale and easy to fix to solve the problem that the exact depth of needle insertion cannot be determined and the patient's own activities may cause the lumbar puncture needle to swing, which may cause greater tissue damage or even cerebrospinal fluid leakage.

[0006] To achieve the above object, the utility model provides the following technical scheme: a lumbar puncture needle with scale and easy to fix, comprising a trocar, a scale groove is formed in the lower end of the trocar, a needle cap is movably installed on the top of the trocar, a fixing device is arranged on the outer side of the trocar, the fixing device comprises a plastic sliding block one, a plastic sliding block two, a protruding block, a mounting block, a clamping rod, a latex pad, a side plate and a skin patch, the plastic sliding block one is installed on the outer side of the trocar, the plastic sliding block two is rotatably connected to one end of the plastic sliding block one, the protruding block is fixedly installed on one end of the plastic sliding block one away from the plastic sliding block two, the mounting block is fixedly installed on one end of the plastic sliding block two away from the plastic sliding block one, one end of the clamping rod is rotatably connected to the outer side of the mounting block, the latex pad is installed on the side of the plastic sliding block one and the plastic sliding block two close to the trocar, the side plate is movably installed on the outer side of the plastic sliding block one and the plastic sliding block two, and the skin patch is installed on the side of the side plate.

[0007] Preferably, the trocar lower end needle tip is marked as 0 point, the scale is marked from 3cm away from the needle tip, interval 1cm is a scale, until 8cm, a total of 6 scales, each scale is marked by a different color scale line, respectively blue, white, red, black, green, yellow, the operator can accurately determine the current needle depth by observing the coincidence position of the skin and the different color scale of the trocar.

[0008] Preferably, the plastic slider one and the plastic slider two are made of PVC plastic, which is resistant to high temperature and ethylene oxide sterilization, and can move up and down along the trocar body.

[0009] Preferably, the clamping rod away from the mounting block end can be clamped with the protrusion, after the plastic slider one and the plastic slider two slide up and down along the trocar, the clamping rod is clamped with the protrusion, and the trocar is tightly held, thereby playing a role of preset needle depth.

[0010] Preferably, the number of side plates is two, and the lower ends of the two side plates are rotationally connected to the lower ends of the side surfaces of the plastic slider one and the plastic slider two, respectively. The skin patch is opened from top to bottom by pushing the side plates, so that the skin patch and the bottom surface are on the same horizontal plane, thereby facilitating the firm adhesion and fixation of the plastic slider one and the plastic slider two on the skin surface, and avoiding the shaking of the trocar.

[0011] Compared with the prior art, the trocar has the following beneficial effects:

[0012] 1. The trocar with scale and convenient fixation can simply and conveniently determine the needle depth during lumbar puncture, can preset the puncture depth through the positions of the plastic slider one and the plastic slider two, prevent over-puncture and cause unnecessary tissue damage, and can simply and conveniently fix the trocar on the skin surface, reduce shaking and micro-injury, and solve the problems of being unable to determine the exact depth of the needle and the patient's own activity possibly causing the trocar to swing and possibly causing greater tissue damage or even cerebrospinal fluid leakage.

[0013] 2. The trocar with scale and convenient fixation has low production cost, simple structure, and potential popularization value. DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the fixing device structure of the utility model;

[0016] Figure 3 It is a schematic diagram of the connection structure of the plastic slider one and the plastic slider two of the utility model;

[0017] Figure 4 The opened structure schematic view of the skin patch of the utility model.

[0018] In the figure: 1, trocar; 2, scale groove; 3, needle cap; 401, plastic slider one; 402, plastic slider two; 403, protruding block; 404, mounting block; 405, clamping rod; 406, latex pad; 407, side plate; 408, skin patch. DETAILED DESCRIPTION

[0019] 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 protection scope of the utility model.

[0020] Please refer to Figures 1-4 The utility model provides a technical scheme:

[0021] Embodiment one:

[0022] The utility model provides a lumbar puncture needle with scale and convenient fixed, including trocar 1, the lower end of trocar 1 is equipped with scale groove 2, and the lower end needle tip of trocar 1 is marked as 0 point, and the scale is marked from the distance needle tip 3cm, and interval 1cm is a scale, until 8cm, and a total of 6 scales, and each scale is marked scale line by different color and is blue, white, red, black, green, yellow respectively, and the operator can accurately determine the current needle depth by observing the coincidence position of skin and the scale of different colors on trocar 1, needle cap 3 is movably installed at the top of trocar 1, and the needle core is fixed with the sleeve by needle cap 3, and the fixed device is arranged on the outside of trocar 1, and the fixed device includes plastic slider one 401, plastic slider two 402, lug 403, mounting block 404, clamping rod 405, latex pad 406, side plate 407 and skin patch 408, plastic slider one 401 is installed on the outside of trocar 1, plastic slider two 402 is rotatably connected to one end of plastic slider one 401, and the material of plastic slider one 401 and plastic slider two 402 is PVC plastic, which is resistant to high temperature and ethylene oxide sterilization, and can move up and down along the main body of trocar 1, lug 403 is fixedly installed at the end of plastic slider one 401 away from plastic slider two 402, mounting block 404 is fixedly installed at the end of plastic slider two 402 away from plastic slider one 401, one end of clamping rod 405 is rotatably connected to the outside of mounting block 404, and the end of clamping rod 405 away from mounting block 404 can be clamped with lug 403, after plastic slider one 401 and plastic slider two 402 slide up and down along trocar 1, clamping rod 405 and lug 403 are clamped, and are tightly held with trocar 1, play the role of preset needle depth, latex pad 406 is installed on the side of plastic slider one 401 and plastic slider two 402 close to trocar 1, after plastic slider one 401 and plastic slider two 402 are buckled by clamping rod 405 and lug 403, latex pad 406 is used to extrude trocar 1, realizes the fixation of trocar 1, and the latex pad 406 is elastic, and plays the role of damping to trocar 1, side plate 407 is movably installed on the outside of plastic slider one 401 and plastic slider two 402, and skin patch 408 is installed on the side of side plate 407, the number of side plate 407 is two, and the lower end of two side plates 407 is rotatably connected to the lower end of the side of plastic slider one 401 and plastic slider two 402 respectively, skin patch 408 is opened from top to bottom by driving skin patch 408 by side plate 407, so that skin patch 408 is on the same horizontal plane with bottom surface, thereby conveniently firmly pasting and fixing plastic slider one 401 and plastic slider two 402 on the skin surface, avoid the shaking of trocar 1.

[0023] In use, the lower end needle tip of the trocar 1 is inserted into the skin of the lumbar vertebra, and the coincidence position of the skin and the different color scale lines on the trocar 1 is observed to accurately determine the current needle insertion depth, after inserting the appropriate depth, the clamping rod 405 is clamped with the protrusion 403, the trocar 1 is tightly clamped, then the side plate 407 on the side of the plastic slider one 401 and the plastic slider two 402 is opened, the skin patch 408 is on the same horizontal plane with the bottom surface, so as to firmly paste and fix the plastic slider one 401 and the plastic slider two 402 on the skin surface, avoiding the shaking of the trocar 1.

[0024] It is to be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another, without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

Claims

1. A lumbar puncture needle with scale and easy fixation, comprising a trocar (1), characterized in that: The trocar (1) lower end is provided with a scale groove (2), the trocar (1) top is movably provided with a needle cap (3), the trocar (1) outside is provided with a fixing device, the fixing device includes a plastic slider one (401), a plastic slider two (402), a lug (403), an installation block (404), a clamping rod (405), a latex pad (406), a side plate (407) and a skin patch (408), the plastic slider one (401) is installed on the outside of the trocar (1), the plastic slider two (402) is rotatably connected to one end of the plastic slider one (401), the lug (403) is fixedly installed on the end of the plastic slider one (401) away from the plastic slider two (402), the installation block (404) is fixedly installed on the end of the plastic slider two (402) away from the plastic slider one (401), one end of the clamping rod (405) is rotatably connected to the outside of the installation block (404), the latex pad (406) is installed on the side of the plastic slider one (401) and the plastic slider two (402) close to the trocar (1), the side plate (407) is movably installed on the outside of the plastic slider one (401) and the plastic slider two (402), and the skin patch (408) is installed on the side of the side plate (407).

2. The lumbar puncture needle with scale and easy fixation according to claim 1, characterized in that: The trocar (1) lower end needle tip is marked as 0 point, the scale is marked from 3cm away from the needle tip, the interval is 1cm, a scale, until 8cm, a total of 6 scales, each scale is marked by a scale line of different colors, respectively blue, white, red, black, green and yellow.

3. The lumbar puncture needle with scale and easy fixation according to claim 1, characterized in that: The plastic slider one (401) and the plastic slider two (402) are made of PVC plastic, which is resistant to high temperature and ethylene oxide sterilization, and can move up and down along the trocar (1) main body.

4. The lumbar puncture needle with scale and easy fixation according to claim 1, characterized in that: The end of the clamping rod (405) away from the installation block (404) can be clamped with the lug (403).

5. The lumbar puncture needle with scale and easy fixation according to claim 1, characterized in that: The side plate (407) is two, and the lower end of the two side plates (407) is rotatably connected to the side of the plastic slider one (401) and the plastic slider two (402) lower end.

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