KR20020028599A - Method for confirmation epidural space of the spinal cord and apparatus thereof - Google Patents

Abstract

PURPOSE: An epidural space checking apparatus and method is provided to easily check the information on the position of epidural space, and reliably prevent perforation of dura, while accurately determining the position of needle when the needle is injected into the loose connective. CONSTITUTION: An epidural space checking apparatus comprises a key input unit(10) for setting the compressed air pressure value for a tube for checking the position of epidural space in a spinal cord; an air compressor(20) for generating a compressed air when a start button is pressed, and supplying the compressed air to a needle injected into a human body through a tube(3); a filter unit(30) for filtering the compressed air flowing through the tube; a precise pressure sensor(40) for sensing the pressure of compressed air existing within the tube so as to check the position of the needle inserted to the epidural space in the spinal cord; a system control unit(50) for controlling compressor on/off operation, and checking the position of the needle inserted into the epidural space in accordance with the change of pressure of compressed air sensed by the precise pressure sensor; a pressure display unit(60) for displaying the change of pressure of compressed air existing in the tube; an alarm sound generating unit(70) for informing insertion of the needle into the epidural space by generating an alarm sound in accordance with the pressure change value of compressed air; and a memory unit(80) for storing programs for the system control unit, air pressure state for checking the position of epidural space, reference input value for compressed air and the compressed air pressure value input from the key input unit.

Description

Medication for confirmation epidural space of the spinal cord and apparatus

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for identifying epidural space in the human spinal cord, and in particular, by using an injection needle as a dura in the spinal cord to prevent pain in analgesic or pain clinic that occurs after a surgical procedure or a painless delivery procedure with a gynecologist. The present invention relates to a device for identifying a dura in the spinal cord and an identification method thereof so that the position of the dura can be accurately determined when an anesthetic or an analgesic is injected.

As is well known, dural anesthesia or analgesics are one of the best partial anesthesias used in surgical procedures, obstetrical delivery, post-operative analgesics and pain clinics, where these dural anesthetics or analgesics avoid the biased effects of drugs in the brain where possible. To ensure that the drugs of analgesics or anesthetics are located outside the membranous sac, including the spinal cord, are delivered to the spinal cord.

Recently developed breakthrough pressure syringes are designed to accurately detect the dura and to protect the cerebrospinal dura matter of the mammal's spinal cord. Especially, the currently developed spinal cord syringes for humans can maintain the positive pressure and inform the signs. have.

That is, although not shown in the prior art, as described in US Patent No. 5,902,273, the dedicated needle is placed to the ligament and then a very soft syringe is connected.

In addition, when the needle is advanced while applying a certain pressure by hand, it is possible to sense sensibly the part where the pressure inside the syringe decreases momentarily. This point is regarded as the dura mater, and is confirmed using a catheter or The drug was finally used to confirm.

In other words, the dura in the spinal cord is a very small part, and a small amount of drug is injected into this part using a dedicated needle, which can produce a much greater expectation than the intravascular injection.

However, this procedure is not performed except for a specific specialist because the dural portion is too small.

That is, in most cases, the dura mater is generally lower than the body pressure, and it is difficult to identify the dura with a very small differential pressure with the naked eye or sense by a mechanical method using a conventional pressure syringe. In the case of general practitioners, the discontinuation of the procedure to inject analgesics or anesthetics into the dura mater was followed.

Therefore, the present invention has been made to solve the conventional problems as described above, an object of the present invention, while adjusting the positional position sensitivity through the adjustment button, a precision pressure sensor, a small air compressor, a pressure for obtaining a constant pressure Control valve and pressure indicator to accurately detect the dural position in the spinal cord injected with anesthetics or analgesic through differential pressure and buzzer sound, to resolve the inconvenience of identifying the dural position in the spinal cord with the naked eye or sense, as in the prior art, In addition, it is possible to check the dural position in the spinal cord to make it easier for a specialist or a general practitioner to perform pain treatment at pain or clinic after a painless delivery procedure with a surgical procedure or obstetrics and gynecology. It is intended to provide a verification device and a method of verification.

Another object of the present invention is to reliably prevent endurance puncture while providing sufficient pressure to the epidural syringe to allow the entrance of the needle in the dura to reliably deflect the dura.

Another object of the present invention is to precisely determine the position of the needle as it enters a loose connective by re-pressing when pressure is lost in soft tissues rather than the dura mater. .

Figure 1 is a perspective view showing a coupling structure of the dura mater confirmation device in one embodiment of the present invention.

Figure 2 is a front view of the panel of the dura mater confirmation device in one embodiment of the present invention.

Figure 3 is a block circuit diagram showing the configuration of the dura mater confirmation device in one embodiment of the present invention.

Figure 4 a, b, c is a state diagram of positioning the spinal dura in one embodiment of the present invention.

Figure 5 is a flow chart showing a dural confirmation method in one embodiment of the present invention.

* Explanation of symbols on the main parts of the drawings *

One ; Pressure regulating valve 2; nipple

3; Tube 10; Key input unit

11; Operation switch 12; Up switch

13; Downswitch 20; Air compressor

30; A filter unit 40; Precision Pressure Sensor

50; System controller 60; Pressure display

61; Measuring pressure display window 62; Set pressure display window

70; Alarm sound generator 80; Memory

90; A power supply unit 100; panel

100a; Start button 200; Dedicated Needle

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

1 is a perspective view showing a coupling structure of the dura mater as an embodiment of the present invention, Figure 2 is a front view of the panel of the dura mater as an embodiment of the present invention.

Figure 3 is a block circuit diagram showing the configuration of the dural confirmation device in one embodiment of the present invention, Figure 4, a, b, c is a state diagram of positioning the spinal dura in one embodiment of the present invention.

1 to 4, the panel for confirming the position of the dural spinal cord in the spinal cord connected to the start button 100a while connecting the dedicated needle 200 inserted through the body to one side end through the tube with a tube (3) Configure 100,

A key input unit (10) for setting the compressed air set pressure value in the tube (3) for the operation of the panel (100), as well as the position of the dura in the spinal cord;

An air compressor 20 for generating compressed air according to the pressing operation of the start button 100a and supplying the compressed air to the dedicated needle 200 inserted into the body part through the tube 3;

A filter unit (30) for filtering the compressed air generated from the air compressor (20) and flowing to the tube (3);

Precision to detect the compressed air pressure in the tube (3) supplied from the air compressor 20 to the dedicated needle 200 to check the insertion position of the dedicated needle 200 is inserted into the dural position in the spinal cord through the body A pressure sensor 40;

Control the on / off of the air compressor 20 when the start button 100a is pressed, and insert it into the spinal cord dural in response to the pressure change of the compressed air in the tube 3 detected by the precision pressure sensor 40. System control unit 50 for checking the position of the dedicated needle 200;

A pressure display unit (60) for displaying a change in the compressed air pressure in the tube (3) during the control operation of the system control unit (50);

An alarm sound generation unit 70 for generating an alarm sound according to the pressure change value of the compressed air through the pressure display unit 60 to notify that the dedicated needle 200 is inserted into the dural layer in the spinal cord;

The memory unit 80 stores the driving program of the system control unit 50 as well as the atmospheric pressure state for positioning the dura mater and the compressed air reference pressure value in the tube 3 and the set pressure value input from the key input unit 40. ); It is characterized by the configuration.

The key input unit 10 is configured to set the pressure value of the compressed air in the tube 3 to check the position of the dura, as well as the operation switch 11 is turned on / off for the operation of the panel 100. Including a down switch (12) and (13),

The display unit 60 includes a measurement pressure display window 61 for displaying the compressed air pressure value measured in the tube 3 when the dedicated needle 200 is inserted into the body, and a tube displayed on the measurement pressure display window 61 ( 3) A set pressure display window 62 for displaying the pressure value set by the up / down switches 12 and 13 as a difference value from the measured pressure value in the inside is included.

Hereinafter, reference numeral 1 denotes a pressure regulating valve, reference numeral 2 denotes a "T" type nipple, and reference numeral 90 denotes a power supply unit.

The pressure control valve (1) is for manually adjusting the pressure of the compressed air generated through the air compressor 20, the power supply unit 90 drives the drive power to the panel 100 through a battery or a power cord Supply was made.

Here, the compressed air generated in the air compressor 20 is supplied through the tube 3 to the pressure control valve (1) → nipple (2) → filter unit 30 → dedicated needle 200, of course, "T The supply is also made to the precision pressure sensor 40 through the nipple (2) of the type, and the memory unit 80 preferably uses EEPROM.

In addition, the dedicated needle 200 has a central portion penetrating in the longitudinal direction thereof, and when the dedicated needle 200 is inserted into the body part, the hole in the front thereof is blocked and the compressed air pressure in the tube 3 is increased. When the dedicated needle 200 is located in the dural spinal cord, the pressure is lowered while the compressed air in the tube 3 falls out.

And, Figure 5 is a flow chart showing a dural confirmation method implemented by the dural confirmation device in the spinal cord which is an embodiment of the present invention described above, the progress step,

Inspecting the operating state of the device for positioning the dura in the spinal cord during the on operation of the operation switch 11;

If there is no error as a result of the inspection, insert the dedicated needle 200 for confirming the position of the dura in the spinal cord into the body and press the start key 100a while operating the air compressor 20 while setting the set pressure value in the tube (3). Making a step;

When the compressed air is supplied from the operation of the air compressor 20 to the dedicated needle 200 through the tube 3, a predetermined time (approximately 0.5 seconds) has elapsed, and then the pressure in the tube 3 is checked and the dedicated needle ( Checking the insertion error (if the compressed air pressure in the tube does not exceed 50 based on the random number 100);

When the needle 200 is correctly inserted into the spinal cord from the inspection step, the pressure in the tube 3 is measured, and according to the measurement result, there is an error of the dural positioning device (pressure in the tube when the reference is 100). Determining " 75 " at pressure <95 in the tube &quot;

As a result of the determination, if there is no error of the dural position detecting device, the compressed air is leaked by detecting the pressure change in the tube 3 for a predetermined time (for example, about 2 seconds) after stopping the air compressor 20 (random number 100). Detecting the pressure in the tube when the pressure is less than 10 based on the reference value;

As a result of the detection, when there is no leakage of compressed air through the dedicated needle 200 inserted into the body, the measured compressed air pressure value (assuming that it is measured at 95 based on the random number 100) in the tube 3 is measured. Displaying a threshold value (displayed as 90 when the arbitrary number 100 is based) through the pressure display window 61;

Comparing the compressed air pressure value in the tube (3) measured from the above step with the differential pressure result (threshold value-set pressure value) between the threshold value and the set pressure value;

As a result of the comparison, if the pressure value actually measured in the tube 3 is smaller than the differential pressure result of the threshold value and the set pressure value, an alarm sounds through the alarm sound generation unit 70 to indicate that the dedicated needle 200 has been inserted into the dura mater. On the other hand, resetting the dural positioning device after a predetermined time (about 10 seconds); It is going to be.

According to another aspect, the operation state inspection of the dural position checking device,

If the initial atmospheric pressure is lower than the predetermined reference atmospheric pressure (initial atmospheric pressure `` setting reference atmospheric pressure), it is recognized that the dural position check device is in operation.If the initial atmospheric pressure is higher than the predetermined reference atmospheric pressure, the atmospheric pressure is passed after a predetermined time (approximately 0.5 seconds). Determining whether there is an error greater than a certain atmospheric pressure (based on the random number 10) through the change of the large (atmospheric pressure change> 10), and if there is no error of the dural position detecting device, if the small value is an error occurrence; It includes.

Referring to Figures 1 to 5 attached to the operation of one embodiment of the present invention configured as described above are as follows.

First, it is provided with a panel 100 for positioning the dural position in the spinal cord connected to the start button (100a) while connecting the dedicated needle 200 through the body to the one side end to be inserted into the epidural tube (3).

Subsequently, after the operation switch 11 is turned on as the key input unit 10 formed in the panel 100 provided, the operation state of the device for positioning the dura in the spinal cord is inspected.

That is, the operation state inspection of the dura mater position checking device, first, to turn on the operation switch 11 to supply power to the panel 100.

Then, the atmospheric pressure sensor (not shown) formed inside the panel 100 compares the initial atmospheric pressure with a predetermined reference atmospheric pressure.

As a result of the comparison, if the initial atmospheric pressure is lower than the predetermined reference atmospheric pressure (initial atmospheric pressure `` setting reference atmospheric pressure), the operation error of the dural positioning device is recognized and the use of the dural positioning device in the spinal cord is stopped, and the initial atmospheric pressure is set arbitrarily. If it is greater than the standard atmospheric pressure, it is determined whether the atmospheric pressure is greater than the arbitrary atmospheric pressure (based on the random number 10) by changing the atmospheric pressure after a predetermined time (about 0.5 seconds).

If the atmospheric pressure is greater than an arbitrary atmospheric pressure (atmospheric pressure change> 10), it is recognized that there is no error of the dural position checking device and the use thereof is continued. Stop using it.

Therefore, if it is determined that there is no error of the dural position positioning device in the spinal cord based on the inspection result as described above, the user first slowly inserts the dedicated needle 200 connected to the panel 100 through the tube 3 into the body. After setting the set pressure value in the tube (3) using the up / down switches (12) and (13) to display the set pressure display window (62), press the start key (100a) to operate the air compressor (20). .

Here, the insertion of the dedicated needle 200 was made to be inclined in the upward direction from the downward direction.

On the other hand, when the start key 100a is pressed while the dedicated needle 200 is inserted into the body, the system controller 50 controls the operation of the air compressor 20 according to the pressing operation of the start key 100a. Done,

According to the control operation of the system controller 50, the air compressor 20 generates compressed air while driving on, and supplies the compressed air to the dedicated needle 200 through the tube 3.

At this time, a predetermined time (about 0.5 seconds) has elapsed when the compressed air is supplied to the dedicated needle 200 through the air compressor 20 → pressure control valve 1 → nipple 2 → filter unit 30. After the pressure in the tube (3) is sensed through the precision pressure sensor 40 is connected to the "T" type nipple (2),

The pressure in the tube 3 detected by the precision pressure sensor 40 is checked by the system controller 50 to check the insertion error of the dedicated needle 200.

That is, when the compressed air pressure in the tube 3 detected by the precision pressure sensor 40 does not exceed 50 based on the arbitrary number 100, the dedicated needle 200 is spinal cord in the system controller 50. It is recognized through the information stored in the memory unit 80 that the insertion error has occurred to other parts without heading to the dural inside.

In other words, the memory unit 80 is input from the key input unit 40 and the compressed air reference pressure value in the tube 3 and the atmospheric pressure state for positioning the dura mates, as well as the driving program of the system control unit 50. The pressure value of each tube (3) according to the set pressure value and the insertion position of the dedicated needle 200 bar,

The system control unit 50 compares the pressure value in the tube 3 detected by the precision pressure sensor 40 with the reference pressure value stored in the memory unit 80, so that the dedicated needle 200 moves to the dural layer in the spinal cord. It is determined whether it is inserted correctly.

On the other hand, if it is determined that the dedicated needle 200 is correctly inserted into the spinal cord from the inspection step by the system control unit 50,

The system control unit 50 displays the measured pressure in the tube 3 detected by the precision pressure sensor 40 by the measured pressure display window 61 included in the pressure display unit 60, and then dural according to the measurement result. The error of the positioning device is checked again.

That is, when the pressure in the tube 3 is located at "75 <pressure in the tube <95" based on the arbitrary number 100, the system control unit 50 recognizes that there is no error of the dural position checking device and then air The compressor 20 is stopped.

In this case, the precision pressure sensor 40 detects a pressure change in the tube 3 for a predetermined time (for example, about 2 seconds) at the time when the air compressor 20 is stopped, and then detects the detected information in the system controller 50. Output to

The system controller 50 detects leakage of compressed air through the information detected from the precision pressure sensor 40.

That is, when the pressure in the tube (3) is less than 10 when the number of the needle 100 is inserted into the body when the needle (200) is inserted into the body, the needle (200) is not located in the dural layer in the spinal cord. When the front hole of the dedicated needle 200 is blocked, the pressure inside thereof becomes high. When this pressure is 10, the system control unit 50 indicates that the compressed air leaks in the tube 3. You will be aware.

In addition, when there is no leakage of compressed air through the dedicated needle 200 inserted into the body as a result of the detection, the system controller 50 determines the actual compressed air pressure value (random number 100) measured in the tube 3. Is assumed to be measured at 95, and the threshold value (displayed at 90 when the arbitrary number is 100) is displayed on the measurement pressure display window 61.

Thereafter, the system controller 50 compares the actually measured compressed air pressure value in the tube 3 with a differential pressure result (threshold value-setting pressure value) between a threshold value and a pressure value which is set in advance.

When the pressure value in the actually measured tube 3 is smaller than the differential pressure result of the threshold value and the set pressure value, the measured pressure value displayed on the measured pressure display window 61 of the pressure display part 60 suddenly decreases and At the same time, the system control unit 50 sounds an alarm through the alarm sound generating unit 70 and notifies that the current dedicated needle 200 has been inserted into the dural in the spinal cord, while a predetermined time passes (about 10 seconds). By resetting the to prepare the operation for inserting the dedicated needle 200 to the dura in the spinal cord next.

That is, the present invention checks the pressure change in the tube 3, which is connected to the dedicated needle 200 when the dedicated needle 200 penetrates the body part to the dura in the spinal cord from time to time, and when the body is located in the body, (3) When pressure in the spinal cord is located in the dural spine, the pressure is suddenly lowered to provide a technique for accurately identifying the dural position in the spinal cord.

On the other hand, if you want to reconfirm that the dedicated needle 200 is located in the dura in the spinal cord through the above process, the dural position determining device is reset again,

When the start button 100a is pressed again while the dural position checking device is reset, the differential pressure between the pressure value displayed on the measured pressure display window 61 of the pressure display unit 60 and the set pressure value displayed on the set pressure display window 62 is displayed. Since it can be confirmed that this is extremely small, it is possible to reconfirm that the current dedicated needle 200 is located in the dural in the spinal cord.

As described above, the present invention provides a precise pressure sensor, a small air compressor, a pressure regulating valve for obtaining a constant pressure, and an anesthetic or analgesic drug injected into the spinal cord, while variably adjusting the dural position sensitivity through an adjustment button. By precisely detecting the position through differential pressure and buzzing sound, it resolves the discomfort caused by visual or sensory identification of the dural position in the spinal cord, as in the prior art, and pain and pain clinic that occurs after a surgical procedure or a painless delivery procedure with a gynecologist. Easily check the information about the location of the dura in the spinal cord, including allowing specialists in general and general practitioners to perform pain procedures, and positive pressure enough to ensure that the inlet of the needle in the dura is reliably evacuating the dura. By providing a syringe to prevent puncture On the other hand, it is intended to provide an effect to accurately determine the position of the needle when the needle enters the loose connective by applying re-pressure when the pressure is lost in the soft tissue than the dura.

The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by any person having ordinary skill in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes will fall within the scope of the claims.

Claims (5)

While constructing a panel for confirming the position of the dural in the spinal cord connected to the start button while connecting a dedicated needle that penetrates the body to one side and inserted into the dural by tube, A key input unit for setting the set pressure value of the compressed air in the tube for the operation of the panel as well as the position of the dura in the spinal cord; An air compressor for generating compressed air according to the pressing operation of the start button and supplying the compressed air to a dedicated needle inserted into a body part through a tube; A filter unit for filtering the compressed air generated by the air compressor and flowing into the tube; A precision pressure sensor for sensing the compressed air pressure in the tube supplied from the air compressor to the dedicated needle so as to check the insertion position of the dedicated needle penetrating the body into the dural position in the spinal cord; A system control unit which controls the on / off of the air compressor during the pressing operation of the start button, and checks the position of the dedicated needle inserted into the dural inside of the spinal cord according to the pressure change of the compressed air in the tube detected by the precision pressure sensor; A pressure display unit for displaying a change in compressed air pressure in the tube during a control operation of the system control unit; An alarm sound generating unit for generating an alarm sound according to the pressure change value of the compressed air through the pressure display unit, indicating that a dedicated needle is inserted into the dural layer in the spinal cord; A memory unit for storing a driving program of the system control unit, as well as an atmospheric pressure state for positioning the dura mater, a compressed air reference pressure value in the tube, and a set pressure value input from the key input unit; Dural check device, characterized in that configured as. The method of claim 1, wherein the display unit, When the dedicated needle is inserted into the body, the pressure value set by the up / down switch is displayed as a difference between the measured pressure display window displaying the measured compressed air pressure value in the tube and the measured pressure value displayed in the measuring pressure display window. Dural check device characterized in that it comprises a set pressure display window to display. Inspecting the operating state of the device for positioning the dura in the spinal cord during the on operation of the actuation switch; Inserting a dedicated needle for checking the position of the dura in the spinal cord into the body if there is no error, and pressing the start key while setting the set pressure value in the tube to operate the air compressor; Checking the pressure in the tube by checking the pressure in the tube after a predetermined time has elapsed when the compressed air is supplied from the air compressor to the needle through the tube; Measuring the pressure in the tube when the dedicated needle is correctly inserted into the spinal cord from the inspection step and determining an error of the dural positioning device according to the measurement result; Detecting the leakage of compressed air by detecting a pressure change in the tube for a predetermined time after stopping the air compressor if there is no error of the dura mater positioning device as a result of the determination; Displaying the measured compressed air pressure value in the tube as a threshold value through a measurement pressure display window when there is no leakage of compressed air through the dedicated needle inserted into the body as a result of the detection; Comparing the compressed air pressure value in the tube measured from the above step with the differential pressure result (threshold value-setting pressure value) between the threshold value and the set pressure value; As a result of the comparison, if the pressure value actually measured in the tube is smaller than the differential pressure result of the threshold value and the set pressure value, an alarm sound is generated through the alarm sound generating unit to indicate that a dedicated needle has been inserted into the dura mater, and a dural position checking device after a predetermined time has elapsed. Resetting; Dural check method characterized in that to proceed to. According to claim 3, wherein the operation state inspection of the dural position checking device, If the initial atmospheric pressure is lower than the predetermined reference atmospheric pressure (initial atmospheric pressure << set reference atmospheric pressure), it is recognized that the dural position check device is in operation error.If the initial atmospheric pressure is higher than the predetermined reference atmospheric pressure, Recognizing that there is no error of the dura mater positioning apparatus when it is greater than atmospheric pressure and recognizing that there is no error; Dural confirmation method characterized in that the progress including. 4. The method according to claim 3, wherein the normal pressure in the tube is located at 75 <pressure in the tube <95, based on an arbitrary number 100, with no dedicated needle inserted into the dura in the spinal cord.