CN106691397A - Cerebrospinal fluid detection apparatus for intraspinal anesthesia - Google Patents

Abstract

The invention belongs to the field of medical treatment, and particularly relates to a cerebrospinal fluid detection apparatus for intraspinal anesthesia. The cerebrospinal fluid detection apparatus comprises an apparatus body, a liquid inlet end and a ventilation drug injecting end is arranged on the apparatus end, a reagent detection chamber is arranged in the apparatus body, the liquid inlet end and the reagent detection chamber are intercommunicated through a dripping hole, a ventilation hole and the reagent detection chamber are intercommunicated through an air guide hole, a first one-way valve is used for sealing the air guide hole is arranged in the air guide hole, and a second one-way valve used for sealing the dripping hole is arranged in the dripping hole. Since cerebrospinal fluid and test paper have chemical reaction, the cerebrospinal fluid contacting with the test paper can be prevented from flowing into a spinal-anesthesia puncture needle by the aid of design of the dripping hole and the valves, and safe implementation of combined spinal epidural anesthesia is guaranteed; the apparatus is no need to be taken off in injection of local anesthetic drugs by the design of the valves, displacement of the spinal-anesthesia puncture needle is avoided to a certain degree, and convenience, efficiency and safety in anesthesia operation are guaranteed.

Description

A cerebrospinal fluid detection device for spinal anesthesia

technical field

The invention belongs to the field of medical treatment, in particular to a cerebrospinal fluid detection device for intraspinal anesthesia.

Background technique

When anesthesiologists perform spinal anesthesia, especially combined spinal epidural anesthesia, they cannot distinguish whether the fluid drained by the lumbar puncture needle is cerebrospinal fluid or saline because they use normal saline to determine the location of the epidural space by the method of resistance loss. There is no way to determine where the puncture needle is located. There are great differences in drug efficacy and tissue damage in different anatomical parts of the spinal canal due to drug administration or subsequent operations, which seriously affect the effect and safety of clinical anesthesia.

In 2015, the applicant applied for an invention patent titled "a cerebrospinal fluid detection device for spinal anesthesia", and its technical solution is: a cerebrospinal fluid detection device for spinal anesthesia, including the device body, One end of the device body is provided with a liquid inlet port, the other end of the device body is provided with a ventilation hole, the inside of the device body is provided with a reagent detection chamber, the reagent detection chamber is provided with pH test paper, and the reagent detection chamber A control chamber is arranged next to it, and the liquid inlet port and the reagent detection chamber communicate with each other through a drip hole, and the ventilation hole and the reagent detection chamber communicate with each other through an air guide hole.

Although the above-mentioned patent can prevent the cerebrospinal fluid in contact with the test paper from flowing back into the liquid inlet to a certain extent, when the local anesthetic is injected, the device needs to be removed, which makes the steps of injecting the drug too cumbersome and may cause spinal anesthesia. The displacement may affect the effect of anesthesia.

Contents of the invention

In order to overcome the above-mentioned defects in the prior art, the present invention provides a novel cerebrospinal fluid detection device for intraspinal anesthesia.

For realizing above-mentioned technical effect, technical solution of the present invention is as follows:

A new type of cerebrospinal fluid detection device for intraspinal anesthesia, characterized in that it includes a device body, one end of the device body is provided with a liquid inlet end, and the other end of the device body is provided with a ventilation and drug injection end, the device The inside of the main body is provided with a reagent detection chamber, the reagent detection chamber is provided with pH test paper, and a control chamber is provided next to the reagent detection chamber, and the liquid inlet port and the reagent detection chamber are connected to each other through a drip hole. The air exchange hole and the reagent detection chamber communicate with each other through the air guide hole. The air guide hole is provided with a first one-way valve for sealing the air guide hole. The drip hole is provided with a second valve for sealing the drip hole. One-way valve.

When the second one-way valve is in the open state, it is vertically arranged between the liquid inlet end and the ventilation drug injection end, and separates the liquid inlet end from the ventilation drug injection end, and the drip hole is open. state.

When the second one-way valve is in the closed state, the second one-way valve covers the drip hole horizontally and laterally, and the drip hole is in a closed state.

When the first one-way valve is in the open state, the air guide hole is in the open state.

When the first one-way valve is in the closed state, the first one-way valve laterally covers the air guide hole, and the air guide hole is in a closed state.

The control chamber is provided with pH neutral color test paper or neutral color used to control the color of the pH test paper in the reagent detection chamber.

The control room is arranged below the reagent detection room, and the control room and the reagent detection room are provided with partitions.

A liquid inlet channel is formed between the liquid inlet end and the drip hole, the liquid inlet channel is L-shaped, and a 90-degree turn angle is formed between the liquid inlet end and the drip hole.

A gas circulation channel is formed between the ventilation injection end and the air guide hole, the gas circulation channel is in the shape of a line, and a 90-degree turn angle is formed between the ventilation injection end and the air guide hole.

The pH neutral color test paper is arranged on the outer surface, inner surface or inside of the control chamber.

The ventilation hole communicates with the outside atmosphere.

Working principle of the present invention is:

When the spinal anesthesia puncture needle drains the liquid, the liquid inlet end of the device is connected with the puncture needle tail, and since the first one-way valve is in an open state, there is a ventilating drug injection end and an air guide hole communicating with the atmosphere. At the same time, the second one-way valve seals the top of the device, and the drained liquid can only flow smoothly into the reagent detection chamber through the drip hole. When the pressure is insufficient, the ventilator injection end can also be connected with a syringe or other negative pressure structure, and the cerebrospinal fluid can be smoothly flowed from the liquid inlet end through the drip hole into the reagent detection chamber by means of suction. Human cerebrospinal fluid is weakly alkaline (pH value: 7.31-7.34), and normal saline is neutral (pH value: 7.0). According to this principle, the color displayed on the pH test paper after the liquid flows into the reagent detection chamber can be compared with that in the control chamber. The difference in the neutral color of the pH value displayed by the test paper can be used to judge whether it is saline or cerebrospinal fluid. If it is determined that it is cerebrospinal fluid, there is no need to remove the device, and a spinal anesthesia syringe is directly connected to the ventilation injection end. The fluid hole is closed and local anesthetic is injected directly into the subarachnoid space.

The advantages of the present invention are:

1. The operation is simple, the detection of cerebrospinal fluid and the injection of local anesthetic can be completed successively through this device, and the displacement of the spinal anesthesia needle is avoided at the same time, ensuring the anesthesia effect.

2. Since the cerebrospinal fluid and the test paper will react chemically, the drip hole design and valve design of the present invention can prevent the cerebrospinal fluid in contact with the test paper from entering the puncture needle. Guaranteed the safe implementation of spinal epidural anesthesia.

3. The raw materials are cheap, and only need high-precision pH test paper or reagents.

Description of drawings

Fig. 1 is a schematic diagram of the structure of the present invention.

In the attached picture:

Device body 1, liquid inlet port 2, reagent detection chamber 3, ventilation and drug injection port 4, control chamber 5, partition 6, air guide hole 7, drip hole 8, one-way valve 9, one-way valve 10.

detailed description

Example 1

A new type of cerebrospinal fluid detection device for intraspinal anesthesia includes a device body 1, one end of the device body 1 is provided with a liquid inlet port 2, and the other end of the device body 1 is provided with a ventilation and drug injection port 4, the device The inside of the body 1 is provided with a reagent detection chamber 3, the reagent detection chamber 3 is provided with a pH test paper, and a control chamber 5 is provided beside the reagent detection chamber 3, and the liquid inlet port 2 and the reagent detection chamber 3 pass through The drip holes 8 communicate with each other, and the air exchange hole and the reagent detection chamber 3 communicate with each other through the air guide hole 7, and the air guide hole 7 is provided with a first one-way valve 9 for sealing the air guide hole 7. The dripping hole 8 is provided with a second one-way valve 10 for sealing the dripping hole 8 .

For the first time, it solves the problem that anesthesiologists cannot objectively distinguish normal saline and cerebrospinal fluid when performing combined spinal epidural anesthesia, enabling doctors to accurately determine the anatomical position of the puncture needle, ensuring the safety and effect of anesthesia for patients. At the same time, it has the advantages of simple, intuitive and fast process.

Example 2

A new type of cerebrospinal fluid detection device for intraspinal anesthesia includes a device body 1, one end of the device body 1 is provided with a liquid inlet port 2, and the other end of the device body 1 is provided with a ventilation and drug injection port 4, the device The inside of the body 1 is provided with a reagent detection chamber 3, the reagent detection chamber 3 is provided with a pH test paper, and a control chamber 5 is provided beside the reagent detection chamber 3, and the liquid inlet port 2 and the reagent detection chamber 3 pass through The drip holes 8 communicate with each other, and the air exchange hole and the reagent detection chamber 3 communicate with each other through the air guide hole 7, and the air guide hole 7 is provided with a first one-way valve 9 for sealing the air guide hole 7. The dripping hole 8 is provided with a second one-way valve 10 for sealing the dripping hole 8 .

When the second one-way valve 10 is in the open state, it is vertically arranged between the liquid inlet end 2 and the ventilation drug injection end 4, and isolates 6 the liquid inlet end 2 from the ventilation drug injection end 4. The drip hole 8 is in an open state.

When the second one-way valve 10 is in the closed state, the second one-way valve 10 covers the drip hole 8 horizontally and laterally, and the drip hole 8 is in a closed state.

When the first one-way valve 9 is in the open state, the air guide hole 7 is in the open state.

When the first one-way valve 9 is in the closed state, the first one-way valve 9 laterally covers the air guide hole 7, and the air guide hole 7 is in a closed state.

The control chamber 5 is provided with pH neutral color test paper or neutral color used to control the color of the pH test paper in the reagent detection chamber 3 . The control chamber 5 is arranged below the reagent detection chamber 3 , and a partition 6 is provided between the control chamber 5 and the reagent detection chamber 3 . A liquid inlet channel is formed between the liquid inlet port 2 and the drip hole 8 , the liquid inlet channel is L-shaped, and a 90-degree corner is formed between the liquid inlet port 2 and the drip hole 8 . A gas circulation channel is formed between the ventilation injection end 4 and the air guide hole 7, the gas circulation channel is in the shape of a line, and the ventilation injection end 4 and the air guide hole 7 form a 90-degree angle corner. The pH neutral color test paper is arranged on the outer surface, inner surface or inside of the control chamber 5 . The ventilation hole communicates with the outside atmosphere.

When the spinal anesthesia puncture needle drains out the liquid, the liquid inlet end 2 of the device is connected with the puncture needle tail. Since the first one-way valve 9 is in an open state, there is a ventilating injection end 4 and a guide valve that communicate with the atmosphere. stomata7. At the same time, the second one-way valve 10 seals the top of the device, and the drained liquid can only flow into the reagent detection chamber 3 through the drip hole 8 smoothly. When the pressure is insufficient, the ventilating and injecting end 4 can also be externally connected with a syringe or other negative pressure structure, and the cerebrospinal fluid can be smoothly flowed from the liquid inlet end 2 through the drip hole 8 into the reagent detection chamber 3 by means of suction or the like. Human cerebrospinal fluid has a weakly alkaline pH value: 7.31-7.34, and normal saline has a neutral pH value: 7.0. According to this principle, the color displayed by the pH test paper after the liquid flows into the reagent detection chamber 3 can be compared with the color displayed by the test paper in the control chamber 5. The difference in the neutral color of the displayed pH value can be used to judge whether it is saline or cerebrospinal fluid. If it is determined to be cerebrospinal fluid, there is no need to take off the device, and a spinal anesthesia syringe is directly connected to the ventilation drug injection end 4. When injecting drugs, the first one-way valve 9 and the second one-way valve 10 are pushed down, and the guide valves are pushed down respectively. The stomata 7 and the drip hole 8 are closed, and the local anesthetic is directly injected into the subarachnoid space.

For the first time, it solves the problem that anesthesiologists cannot directly inject local anesthetic through this device after identifying saline and cerebrospinal fluid, so that doctors can easily inject local anesthetic through this device, avoiding the displacement of the spinal anesthesia needle and the cumbersome steps when taking off the device , to ensure the patient's anesthesia effect and the doctor's easy operation. Since the cerebrospinal fluid and the test paper will react chemically, the drip hole design and valve design of the present invention can prevent the cerebrospinal fluid in contact with the test paper from flowing into the spinal anesthesia needle, ensuring the safe implementation of spinal epidural anesthesia. The raw materials are cheap, and only high-precision pH test paper or reagents are needed.

Claims (10)

1. A novel cerebrospinal fluid detection device for intraspinal anesthesia, characterized in that it includes a device body (1), one end of the device body (1) is provided with a liquid inlet port (2), and the device body (1) The other end of the device is provided with a ventilation and drug injection end (4), and a reagent detection chamber (3) is provided inside the device body (1), and a pH test paper is provided in the reagent detection chamber (3), and the reagent detection chamber (3) is provided with a pH test paper. A control chamber (5) is arranged next to the chamber (3), and the liquid inlet port (2) communicates with the reagent detection chamber (3) through a drip hole (8), and the ventilation hole is connected to the reagent detection chamber ( 3) communicate with each other through the air guide hole (7), the air guide hole (7) is provided with a first one-way valve (9) for sealing the air guide hole (7), and the drip hole (8) is A second one-way valve (10) for sealing the drip hole (8) is provided. 2. A new type of cerebrospinal fluid detection device for spinal anesthesia according to claim 1, characterized in that: when the second one-way valve (10) is in the open state, it is vertically arranged at the liquid inlet end (2) and the ventilation injection end (4), and the liquid inlet end (2) is separated from the ventilation injection end (4) (6), and the drip hole (8) is in an open state. 3. A novel cerebrospinal fluid detection device for spinal anesthesia according to claim 1, characterized in that: when the second one-way valve (10) is in the closed state, the second one-way valve (10) 10) Covering the drip hole (8) horizontally and laterally, and the drip hole (8) is in a closed state. 4. A new type of cerebrospinal fluid detection device for spinal anesthesia according to claim 1, characterized in that: when the first one-way valve (9) is in the open state, the air guide hole (7) is open. 5. A novel cerebrospinal fluid detection device for spinal anesthesia according to claim 1, characterized in that: when the first one-way valve (9) is in the closed state, the first one-way valve (9) 9) Horizontally covering the air guide hole (7), and the air guide hole (7) is in a closed state. 6. A new type of cerebrospinal fluid detection device for spinal anesthesia according to any one of claims 1-5, characterized in that: the control room (5) is provided with a control reagent detection room (3) pH neutral color test paper or neutral colors in the color of pH test paper. 7. A novel cerebrospinal fluid detection device for spinal anesthesia according to claim 6, characterized in that: the control room (5) is set under the reagent detection room (3), and the control room (5) ) and the reagent detection chamber (3) are provided with partitions (6). 8. A novel cerebrospinal fluid detection device for intraspinal anesthesia according to claim 7, characterized in that a liquid entry channel is formed between the liquid entry end (2) and the drip hole (8) , the liquid inlet channel is L-shaped, and the liquid inlet end (2) and the drip hole (8) form a 90-degree corner. 9. A new type of cerebrospinal fluid detection device for spinal anesthesia according to claim 7, characterized in that: gas circulation is formed between the ventilation injection end (4) and the air guide hole (7) channel, the gas circulation channel is in the shape of a line, and there is a 90-degree turn angle between the ventilation injection end (4) and the air guide hole (7). 10. A novel cerebrospinal fluid detection device for spinal anesthesia according to claim 7, characterized in that the pH neutral color test paper is set on the outer surface, inner surface or inside of the control chamber (5).