CN210811026U

CN210811026U - Lumbar puncture outfit capable of measuring cerebrospinal fluid pressure

Info

Publication number: CN210811026U
Application number: CN201921366758.1U
Authority: CN
Inventors: 喻明; 贺美文; 李莹
Original assignee: Suining Central Hospital
Current assignee: Suining Central Hospital
Priority date: 2019-08-21
Filing date: 2019-08-21
Publication date: 2020-06-23
Anticipated expiration: 2029-08-21

Abstract

The utility model discloses a lumbar puncture outfit capable of measuring cerebrospinal fluid pressure, which comprises a needle body, a needle handle, a needle core and a needle seat, wherein the lower end of the needle body is fixed at the upper end of the needle handle, an inner cavity I of the needle body is communicated with an inner cavity II of the needle handle, the needle core is coaxially and slidably arranged in the inner cavity I and the inner cavity II, the lower end of the needle core is fixed on the needle seat, and the needle handle is also provided with a circulation hole communicated with the inner cavity II; the needle core is provided with an indication color block I, the needle handle is provided with a transparent window, the transparent window is provided with an indication color block II, and the indication color block I is aligned with the indication color block II when the needle core moves out of the position of the circulation hole along the inner cavity II; the needle body is provided with a scale layer. The utility model discloses be favorable to the doctor to the distance of taking out accuse nook closing member and the depth of penetration of needle body.

Description

Lumbar puncture outfit capable of measuring cerebrospinal fluid pressure

Technical Field

The utility model relates to a medical instrument, in particular to a lumbar puncture outfit which can measure the pressure of cerebrospinal fluid.

Background

The medical equipment is an important instrument for assisting a clinician in diagnosis and treatment, and the convenience, effectiveness and safety of the medical equipment directly determine whether clinical diagnosis and treatment are successful or not. Lumbar puncture is one of the examination methods commonly used in neurology, and has important value in diagnosis and treatment of nervous system diseases such as subarachnoid hemorrhage, intracranial infection, inflammatory demyelinating disease, peripheral neuropathy and the like. The lumbar puncture ware (lumbar puncture needle) that traditional clinical use generally includes hollow needle body, nook closing member and needle file, and the nook closing member nests in the inside and tail end of needle body and is fixed mutually with the needle file, utilizes the needle body to puncture, takes out the nook closing member after the puncture completely and carries out the pressure measurement, collect further operations such as cerebrospinal fluid or injection.

At present, in order to avoid pollution caused by complete withdrawal of a needle core and facilitate operations such as cerebrospinal fluid pressure measurement, a through hole communicated with a cavity of the needle body is specially designed at the side part of the needle body of the lumbar puncture outfit, so that a channel for cerebrospinal fluid flow is formed, and operations such as observation, pressure measurement, specimen collection, intrathecal injection and the like are further completed. However, two problems are also common to the existing lumbar puncture outfits: firstly, the withdrawing distance of the stylet is not controlled well, the stylet is easy to be separated out when the stylet is excessively withdrawn, pollution is easy to be generated, and a flow channel is easy to be blocked when the stylet is insufficiently withdrawn, so that the next operation is hindered; secondly, the puncture depth of the needle body is critical, but the lack of the indication mark is inconvenient for doctors to control the puncture depth, and the hand feeling is easy to cause errors.

Therefore, there is a need for a lumbar puncture outfit that can measure cerebrospinal fluid pressure, which is beneficial for the physician to control the distance of the withdrawal of the needle core and the puncture depth of the needle body.

SUMMERY OF THE UTILITY MODEL

In view of the above, an object of the present invention is to provide a lumbar puncture outfit capable of measuring cerebrospinal fluid pressure, which is advantageous for a doctor to draw out a distance of a needle control core and a puncture depth of a needle body.

The utility model provides a lumbar puncture outfit capable of measuring cerebrospinal fluid pressure, which comprises a needle body, a needle handle, a needle core and a needle seat, wherein the lower end of the needle body is fixed at the upper end of the needle handle, an inner cavity I of the needle body is communicated with an inner cavity II of the needle handle, the needle core is coaxially and slidably arranged in the inner cavity I and the inner cavity II, the lower end of the needle core is fixed on the needle seat, and the needle handle is also provided with a circulation hole communicated with the inner cavity II; the needle core is provided with an indication color block I, the needle handle is provided with a transparent window, the transparent window is provided with an indication color block II, and the indication color block I is aligned with the indication color block II when the needle core moves out of the position of the circulation hole along the inner cavity II; the needle body is provided with a scale layer.

As a further improvement to the technical scheme, the positions of the transparent window, which are positioned at the left side and the right side of the inner cavity II, are provided with indication color blocks II, and the two indication color blocks II are symmetrically arranged.

As a further improvement to the above technical solution, the flow hole is communicated with a medical catheter.

As a further improvement of the technical scheme, a connecting pipe is fixed on the needle handle, the inner cavity III of the connecting pipe is communicated with the circulation hole, and one end of the medical catheter extends into the inner cavity III and is fixedly connected.

As a further improvement to the technical scheme, the connecting pipe is provided with a convex block, a screw hole is arranged in the convex block and communicated with the inner cavity III, and a limiting rod is in threaded fit with the screw hole and compresses a part of the medical catheter contacted with the screw hole in the screwing process.

As a further improvement to the technical scheme, the bottom surface of the limiting rod is of a hemispherical structure, and the arc-shaped curved surface of the limiting rod faces the medical catheter.

As a further improvement to the technical scheme, the top surface of the limiting rod is fixedly connected with a rotary control handle.

As a further improvement to the technical scheme, an air filter membrane for adsorbing bubbles is arranged in the inner cavity III.

As a further improvement to the technical scheme, the outer surface of the needle base is distributed with anti-skid grains.

As a further improvement to the technical scheme, the needle further comprises a lantern ring made of flexible materials, and the lantern ring is sleeved outside the needle body in a sliding mode.

Through the above disclosure, the present invention has the following beneficial technical effects:

the utility model provides a lumbar puncture outfit capable of measuring cerebrospinal fluid pressure, through add instruction color lump I on the nook closing member, add instruction color lump II on the needle handle, instruct color lump I to move towards instruction color lump II direction gradually when the nook closing member is taken out after the puncture, when instructing color lump I and instructing color lump II to align, indicate the nook closing member has moved out the position of runner hole along inner chamber II (namely the junction of inner chamber II and runner hole), thus make the doctor can control the distance that the nook closing member taken out fast; meanwhile, as the needle body is provided with the scale layer, doctors can know the needle insertion depth at any time through the scale layer, thereby being beneficial to controlling the puncture depth of the needle body.

Drawings

FIG. 1 is a schematic view of the puncture device of the present invention;

fig. 2 is a schematic structural view of the utility model when the stylet is pulled out.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the present invention; obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention based on the embodiments of the present invention.

As shown in fig. 1 and 2: the embodiment provides a lumbar puncture outfit capable of measuring cerebrospinal fluid pressure, which comprises a needle body 1, a needle handle 2, a needle core 3 and a needle seat 4, wherein the lower end of the needle body 1 is fixed at the upper end of the needle handle 2, an inner cavity I11 of the needle body 1 is communicated with an inner cavity II 21 of the needle handle 2, the needle core 3 is coaxially and slidably arranged in the inner cavity I11 and the inner cavity II 21, the lower end of the needle core is fixed on the needle seat 4, and the needle handle 2 is further provided with a circulation hole 5 communicated with the inner cavity II 21; the needle body 1 is used for puncture, and the upper end of the needle body is a tip part; the directions of the upper part, the lower part, the left part and the right part are all based on the directions shown in the figure 1; the needle handle 2 can be used for hand-held operation, so that a doctor can conveniently control needle insertion; the needle seat 4 is used for controlling the movement of the needle core 3, and anti-skid grains 4a are distributed on the outer surface of the needle seat 4, so that the hand feeling during operation is improved; the flow hole 5 can be used for connecting a pressure measuring device, a liquid containing bottle, a syringe or other apparatuses so as to complete operations of measuring the cerebrospinal fluid pressure, collecting the cerebrospinal fluid or injecting and the like; the principle and the using process of the lumbar puncture outfit are the same as those of the prior art, and are not described again.

The lumbar puncture outfit of the embodiment is mainly improved in that an indication color block I3 a is arranged on the needle core 3, a transparent window 22 is arranged on the needle handle 2, the transparent window 22 is provided with an indication color block II 2a, and when the needle core 3 moves out of the position of the circulation hole 5 along the inner cavity II 21, the indication color block I3 a is aligned with the indication color block II 2 a; the needle body 1 is provided with a scale layer 12. The indication color block I3 a is an annular colored indication layer arranged outside the needle core 3, and the indication color block I3 a is close to the upper end of the needle core 3; the indication color block II 2a is a strip-shaped or arc-shaped colored indication layer provided with the needle handle 2, and the indication color block II 2a is close to the lower end of the needle handle 2; the indication color block I3 a and the indication color block II 2a can adopt different colors, so that the identification is convenient; preferably, the positions of the transparent window 22 at the left side and the right side of the inner cavity II 21 are both provided with indication color blocks II 2a, and the two indication color blocks II 2a are symmetrically arranged; the whole needle handle 2 can be made of medical resin material, wherein the transparent window 22 is a transparent layer structure; the scale layer 12 is preferably a millimeter scale layer with high precision.

According to the lumbar puncture outfit of the embodiment, the indication color block I3 a is additionally arranged on the needle core 3, the indication color block II 2a is additionally arranged on the needle handle 2, the indication color block I3 a gradually moves towards the direction of the indication color block II 2a when the needle core 3 is pulled out after puncture, and when the indication color block I3 a is aligned with the indication color block II 2a, the needle core 3 is indicated to be moved out of the position of the circulation hole 5 along the inner cavity II 21 (namely, the connection part of the inner cavity II 21 and the circulation hole 5), so that a doctor can quickly control the pulling distance of the needle core 3; meanwhile, as the scale layer 12 is arranged on the needle body 1, a doctor can know the needle insertion depth all the time through the scale layer, thereby being beneficial to controlling the puncture depth of the needle body 1.

In this embodiment, the flow hole 5 is communicated with a medical catheter 6; the medical catheter 6 can be of a silicone tube structure, so that the connection of instruments such as a pressure gauge, a liquid containing bottle, an injector and the like is facilitated; a connecting pipe 7 is fixed on the needle handle 2, an inner cavity III 71 of the connecting pipe 7 is communicated with the circulation hole 5, and one end of the medical catheter 6 extends into the inner cavity III 71 and is fixedly connected; the connecting tube 7 can be connected to the needle shaft 2, for example, by a screw connection, which facilitates mounting and dismounting.

In this embodiment, in order to effectively control the outflow rate (cerebrospinal fluid outflow rate) and prevent the cerebral hernia caused by too fast outflow when the cranial pressure of the patient is too high, a convex block 72 is arranged on the connecting tube 7, a screw hole 72a is arranged in the convex block 72, the screw hole 72a is communicated with the inner cavity iii 71, and a limiting rod 73 is in threaded fit with the screw hole 72a and compresses the contacted part of the medical catheter 6 in the screwing process; when the limiting rod 73 moves downwards, the limiting rod presses a part of the medical catheter 6, so that the passage of the medical catheter 6 is reduced or even closed, and the outflow speed of cerebrospinal fluid is controlled; the limiting rod 73 is matched with the screw hole 72a through a thread pair, so that the axial displacement of the limiting rod 73 can be effectively prevented, and medical accidents are avoided. The bottom surface of the limiting rod 73 is of a hemispherical structure, and the arc-shaped curved surface of the limiting rod faces the medical catheter 6, as shown in the figure, the axis of the limiting rod 73 is perpendicular to the axis of the medical catheter 6, so that the intercepting operation can be rapidly carried out; the hemispherical bottom surface can reduce the rotation resistance; of course, the bottom of the stop rod 73 may be connected to a rotatable plate, and the medical catheter 6 may be pressed by the rotatable plate. In order to facilitate the operation of the limiting rod 73, a rotary control handle 74 is fixedly connected to the top surface of the limiting rod 73.

In this embodiment, in order to prevent external air bubbles from entering a human body during injection, the air filter membrane 8 for adsorbing the air bubbles is installed in the inner cavity iii 71, so that the use safety is improved.

In this embodiment, the needle assembly further comprises a sleeve ring 9 made of a flexible material, and the sleeve ring 9 is slidably sleeved outside the needle body 1. The collar 9 can be made of rubber material, for example, and the aperture thereof is slightly smaller than the outer diameter of the needle body 1; the use of the lantern ring 9 can improve the safety during puncture, the lantern ring 9 is firstly positioned at a preset position during puncture, when the needle body 1 is punctured to a specific depth, the lantern ring 9 is abutted against the back of a patient, and the suddenly increased friction force can remind a doctor to prevent the needle body 1 from being punctured excessively.

The above description is only an example of the present invention, and the common general knowledge of the known specific structures and characteristics of the embodiments is not described herein. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims

1. A lumbar puncture outfit capable of measuring cerebrospinal fluid pressure comprises a needle body, a needle handle, a needle core and a needle seat, wherein the lower end of the needle body is fixed at the upper end of the needle handle, an inner cavity I of the needle body is communicated with an inner cavity II of the needle handle, the needle core is coaxially and slidably arranged in the inner cavity I and the inner cavity II, the lower end of the needle core is fixed on the needle seat, and a circulation hole communicated with the inner cavity II is further formed in the needle handle; the method is characterized in that: the needle core is provided with an indication color block I, the needle handle is provided with a transparent window, the transparent window is provided with an indication color block II, and the indication color block I is aligned with the indication color block II when the needle core moves out of the position of the circulation hole along the inner cavity II; the needle body is provided with a scale layer.

2. The lumbar puncture outfit for cerebrospinal fluid pressure measurement as set forth in claim 1, wherein: and indicating color blocks II are arranged at the positions of the transparent window, which are positioned at the left side and the right side of the inner cavity II, and the two indicating color blocks II are symmetrically arranged.

3. The lumbar puncture outfit for cerebrospinal fluid pressure measurement as set forth in claim 1, wherein: the circulation hole is communicated with a medical catheter.

4. The lumbar puncture outfit for cerebrospinal fluid pressure measurement as set forth in claim 3, wherein: a connecting pipe is fixed on the needle handle, the inner cavity III of the connecting pipe is communicated with the circulation hole, and one end of the medical catheter extends into the inner cavity III and is fixedly connected.

5. The lumbar puncture outfit for cerebrospinal fluid pressure measurement as set forth in claim 4, wherein: the connecting pipe is provided with a convex block, a screw hole is arranged in the convex block and communicated with the inner cavity III, and a limiting rod is in threaded fit with the screw hole and compresses a part of the medical catheter contacted with the screw hole in the screwing process.

6. The lumbar puncture outfit for cerebrospinal fluid pressure measurement as set forth in claim 5, wherein: the bottom surface of the limiting rod is of a hemispherical structure, and the arc-shaped curved surface of the limiting rod faces the medical catheter.

7. The lumbar puncture outfit for cerebrospinal fluid pressure measurement as set forth in claim 5, wherein: the top surface of the limiting rod is fixedly connected with a rotary control handle.

8. The lumbar puncture outfit for cerebrospinal fluid pressure measurement as set forth in claim 5, wherein: and an air filter membrane for adsorbing bubbles is arranged in the inner cavity III.

9. A lumbar puncture instrument capable of performing cerebrospinal fluid pressure measurement according to any one of claims 1 to 7, characterized in that: the outer surface of the needle base is distributed with anti-skid lines.

10. A lumbar puncture instrument capable of performing cerebrospinal fluid pressure measurement according to any one of claims 1 to 7, characterized in that: the needle also comprises a lantern ring made of flexible materials, and the lantern ring is sleeved outside the needle body in a sliding mode.