WO2018004019A1

WO2018004019A1 - Depth adjustable fluid movement medical instrument using reflected light distance sensor and control method therefor

Info

Publication number: WO2018004019A1
Application number: PCT/KR2016/006845
Authority: WO
Inventors: 김창석; 정명영; 김도원; 김규정
Original assignee: 부산대학교 산학협력단
Priority date: 2016-06-27
Filing date: 2016-06-27
Publication date: 2018-01-04

Abstract

The present invention relates to a depth adjustable fluid movement medical instrument using a reflected light distance sensor capable of inserting a syringe needle to an accurate depth on the basis of information of a distance measured by light reflected from a limiting membrane of a biological body and a control method therefor. The depth adjustable fluid movement medical instrument comprises: a handpiece for injecting or collecting a fluid; a syringe needle fixed to the handpiece and having one side end thereof to be inserted into a biological body exposed; a distance sensor optical fiber, attached to the syringe needle at a fixed distance from an endmost portion of the syringe needle, for measuring an axial distance according to the insertion of the syringe needle; a fluid movement pressure part for adjusting the movement of the fluid and the inside of the biological body through the syringe needle; and a distance sensor measurement part for outputting a signal measuring a relative distance between the tip of the syringe needle located inside an outer limiting membrane and an inner limiting membrane of the biological body by using a tip of the optical fiber located outside the outer limiting membrane of the biological body through the distance sensor optical fiber.

Description

Depth Control Fluid Movement Medical Tool Using Reflected Light Distance Sensor and Its Control Method

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a medical device, and more specifically, to a depth-controlled fluid movement medical tool using a reflected light distance sensor that allows the insertion of a needle to an accurate depth based on information of a distance measured by light reflected from a biological boundary membrane. And a control method thereof.

As medical technology develops, a hole is cut in the smallest part of the human body without directly cutting the body, and images are viewed.Ablators, biopsy needles, and ultrasound probes are used in the lesioned areas. Medical instruments are inserted for treatment or diagnosis.

In particular, a medical device including a syringe is used in the medical field for treatment or biopsy.

However, when a medical person uses a syringe, when the syringe is inserted into the patient's body, the inside of the body cannot be seen at all, so it is difficult to determine the position of the inserted syringe needle or the degree of insertion thereof.

For example, if a healthcare practitioner wants to draw blood from a particular blood vessel in a patient, it may take considerable time to locate the exact blood vessel or determine the extent of penetration of the syringe.

The practitioner must determine the insertion position and the degree of insertion of the syringe needle in accordance with personal judgment according to the experience of the treatment. Therefore, if a medical practitioner lacks medical experience, the syringe needle may be inserted into the patient several times without finding the exact location to inject, which causes pain to the patient.

In addition, a medical accident can be caused by a wrong decision of a medical person.

For example, side effects can occur when a needle accidentally touches an important nerve around you when a needle is inserted. In particular, if prolonged treatment requires injection into an artery or vein, such as the neck or thigh, the mistake of a medical practitioner can be fatal to the patient.

Such medical accidents occur because X-rays, etc., which have been previously photographed by medical personnel during treatment or diagnosis, are caused because the inside of the patient's body cannot be directly checked in real time.

Furthermore, treating or diagnosing a patient is a very important task directly related to the patient's life. Therefore, it is very difficult to accurately insert a needle into a patient because it requires considerable experience and skills from a medical practitioner.

In the prior art, Korean Patent Publication No. 10-2009-0114102 discloses a method of inserting a syringe needle by grafting a medical image, which requires a control unit to be combined with an image of a needle, thereby causing a large amount of data and a high recognition rate of 3D information. There is.

In addition, the Korean Patent Publication No. 10-2013-0092560 is possible to correct the movement of the surgical instruments outside the biological boundary through the surface tracking, but there is a problem that does not apply to the internal insertion of the syringe needle.

The present invention is to solve the problem of the insertion position control technology of the prior art syringe needle, it is possible to insert the injection needle to the correct depth based on the information of the distance measured by the light reflected from the biological boundary membrane It is an object of the present invention to provide a depth control fluid movement medical tool using a reflected light distance sensor and a control method thereof.

The present invention can be inserted to the needle to the correct depth, and using the reflected light distance sensor to safely insert the external liquid or gas into the living body through the needle or to safely collect the liquid or gas inside the living body to the outside It is an object of the present invention to provide a depth control fluid movement medical tool and a control method thereof.

The present invention configures a syringe including a distance sensor optical fiber and controls the movement of the fluid inside and through the needle through the needle for fluid movement, and inserts the injection needle to the correct depth and safely inserts the liquid or gas into the living body. SUMMARY OF THE INVENTION An object of the present invention is to provide a depth control fluid movement medical tool and a control method thereof using a reflected light distance sensor that can be collected outside.

The present invention comprises an optical fiber attached to the needle having a fixed distance to the most end of the needle and is composed of the end of the needle and the in vivo boundary using the end of the optical fiber located outside the outer boundary membrane SUMMARY OF THE INVENTION An object of the present invention is to provide a depth control fluid movement medical tool using a reflected light distance sensor that outputs a signal measuring a relative distance of a membrane, and a control method thereof.

The objects of the present invention are not limited to the above-mentioned objects, and other objects that are not mentioned will be clearly understood by those skilled in the art from the following description.

Depth control fluid movement medical tool using a reflected light distance sensor according to the present invention for achieving the above object is a handpiece for injecting or extracting fluid; a needle fixed to the handpiece is inserted into the living body one end exposed; Distance sensor optical fiber having a fixed distance to the most end of the needle and attached to the needle to measure the axial distance according to the insertion of the needle; For fluid movement to control the movement of the fluid and the inside of the living body through the needle A pressure sensor; A distance sensor measuring unit for outputting a signal for measuring the relative distance between the end of the needle and the in vivo boundary membrane located in the ex vivo boundary membrane by using the optical fiber end located outside the ex vivo boundary membrane through the distance sensor optical fiber. Characterized in that.

Here, the handpiece is directly attached to the needle, characterized in that for adjusting the axial depth of the end of the needle with the movement of the hand based on the signal output from the distance sensor measuring unit.

The handpiece may be attached through a needle and a drive assembly, and adjust the axial depth of the tip of the needle to the movement of the drive assembly based on a signal output from the distance sensor measuring unit.

And a drive controller in communication with the drive assembly to move the needle.

And the drive assembly is characterized in that it comprises a piezo-electric micro motor.

And a data processor communicating with the distance sensor measuring unit so as to receive a signal output from the distance sensor measuring unit for measuring the distance, wherein the data processor is configured to determine the distance measurement result from the distance sensor measuring unit. The axial depth of the needle tip is adjusted accordingly.

The fluid moving pressure unit may be used as a means for applying a pressure for injecting a fluid into a living body or for applying a pressure for collecting a fluid out of a living body.

The distance sensor measuring unit may further include a light source optically connected to the distance sensor optical fiber and an optical detector optically connected to the distance sensor optical fiber.

The light source may be a super light emitting diode.

The light source may be a wavelength swept laser, and the light detector may be a photodetector.

And the light detector is characterized in that the spectrometer.

And the fluid is characterized in that it comprises a gas or a liquid or a gas and a liquid.

The control method of the depth-controlled fluid movement medical tool using the reflected light distance sensor according to the present invention for achieving another object is a distance sensor optical fiber located outside the outer boundary of the membrane, while inserting a syringe including a needle and the distance sensor optical fiber to the living body Measuring the relative distance between the tip of the needle located in the ex vivo boundary membrane and the in vivo boundary membrane by adjusting the axial depth of the tip of the needle based on the signal output from the distance sensor measurement unit; Determining whether the needle is inserted to a desired depth based on the signal output from the distance sensor measuring unit; injecting the fluid into the body through the needle or injecting the fluid, if it is determined that the needle is inserted to a desired depth; It is characterized in that it comprises a; extracting in vitro.

Here, the depth adjustment of the needle, characterized in that for adjusting the axial depth of the end of the needle with the movement of the operator's hand based on the signal output from the distance sensor measuring unit.

The depth of the needle may be adjusted by adjusting the axial depth of the tip of the needle by the movement of the driving assembly based on the signal output from the distance sensor measuring unit.

The depth control fluid movement medical tool and the control method using the reflected light distance sensor according to the present invention has the following effects.

First, the injection needle can be inserted to the correct depth based on the information of the distance measured by the light reflected from the biological boundary membrane.

Second, the needle can be inserted to the correct depth, and the needle can safely insert the external liquid or gas into the living body or collect the liquid or gas inside the living body.

Third, it constitutes a syringe including a distance sensor optical fiber and through the injection of the fluid movement to adjust the movement of the fluid and the inside of the body through the injection needle to enable the insertion of the injection needle to the correct depth.

Fourth, by using the end of the optical fiber located outside the outer border, the output signal to measure the relative distance between the end of the needle and the border of the border inside the outer border can be increased safety.

1 is a block diagram of a depth control fluid movement medical tool using a reflected light distance sensor according to the present invention

Figure 2 is an overall configuration of the depth control fluid movement medical tool using a reflected light distance sensor according to the present invention

Figure 3 is a flow chart for the control of the depth control fluid movement medical tool using the reflected light distance sensor according to the present invention

Hereinafter, a preferred embodiment of the depth control fluid movement medical tool and the control method using the reflected light distance sensor according to the present invention will be described in detail.

Features and advantages of the depth control fluid movement medical tool and its control method using the reflected light distance sensor according to the present invention will become apparent from the detailed description of each embodiment below.

1 is a block diagram of a depth control fluid movement medical tool using a reflected light distance sensor according to the present invention, Figure 2 is an overall configuration of the depth control fluid movement medical tool using a reflected light distance sensor according to the present invention.

The present invention is to safely control the depth when the needle is inserted into the living body can be inserted into the needle to the correct depth based on the information of the distance measured by the light reflected from the biological boundary membrane, through the needle It is designed to safely insert external liquids or gases into the living body or to safely collect liquids or gases inside the living body.

To this end, the depth adjusting syringe system according to an embodiment of the present invention is a syringe comprising a hand piece and a needle, and the needle and the hand piece to move the needle in the axial direction with respect to the hand piece. And a drive assembly for connecting.

Such a depth-controlled syringe system according to the present invention also includes a distance sensor that includes an optical fiber, one end of which is fixed to the most end of the needle and attached to the needle.

The distance sensor outputs a signal for measuring the distance from the most end of the scanning needle to the object.

Specifically, the depth control fluid movement medical tool using the reflected light distance sensor according to the present invention is fixed to the handpiece 11 and the handpiece 11 constituting the syringe body, as shown in FIGS. Distance sensor optical fiber that is attached to the needle 10 through the optical fiber attachment portion 12 of the needle 10 and the needle 10 exposed at one end to measure the distance according to the insertion of the needle 10 (13), the fluid movement pressure portion 14 for controlling the movement of the fluid and the inside of the living body through the needle 10, and the needle having a fixed distance from the most end of the needle 10 ( 10) the end of the needle and the inside boundary membrane (B) (C) located in the outside boundary membrane (A) by using the optical fiber tip located outside the outside boundary membrane (A) through the distance sensor optical fiber 13 attached to the 10). Distance sensor measuring unit 15 for outputting a signal for measuring the relative distance of the Include.

Here, the handpiece 11 is directly attached to the needle 10 to adjust the axial depth of the tip of the needle 10 by the movement of the hand using the signal output from the distance sensor measuring unit 15. It is for.

In addition, the handpiece 11 is attached to the needle 10 through the driving assembly and moves the driving assembly to the axial depth of the tip of the needle 10 by using the signal output from the distance sensor measuring unit 15. It is also possible to configure to adjust.

In addition, it is also possible to further comprise a drive controller in communication with the drive assembly to move the needle 10 of the depth control fluid movement medical tool using the reflected light distance sensor according to the present invention.

Such a drive assembly preferably comprises a piezo-electric micro motor.

In addition, the depth control fluid movement medical tool using the reflected light distance sensor according to the present invention communicates with the distance sensor measuring unit 15 to receive a signal output from the distance sensor measuring unit 15 to measure the distance. It is also possible to further include a data processor.

The data processor communicates with the drive assembly and the drive controller to adjust the axial depth of the needle tip in accordance with the measurement result of the distance.

The fluid moving pressure unit 14 may be used as a means for applying a pressure for injecting a fluid into a living body or for applying a pressure for collecting a fluid out of a living body.

The distance sensor measuring unit 15 further includes a light source optically connected to the distance sensor optical fiber 13 and a light detector optically connected to the distance sensor optical fiber 13.

Here, the light source is preferably a super light emitting diode, but is not limited thereto.

The light source is a wavelength swept laser, and the photo detector is a photodetector.

And it is more preferable that the said photodetector is a spectrometer.

In addition, the injection needle 10 may be used to insert an external fluid into the ex vivo boundary membrane, or may be used to collect an internal fluid out of the ex vivo boundary membrane, but is not limited thereto.

Here, the fluid includes gas or liquid or gas and liquid.

The control method of the depth control fluid movement medical tool using the reflected light distance sensor according to the present invention having such a configuration is as follows.

3 is a flow chart for the control of the depth adjustment fluid movement medical tool using the reflected light distance sensor according to the present invention.

First, while inserting the syringe including the handpiece 11 and the needle 10 and the distance sensor optical fiber 13 to the living body (S301), the living body using the end of the distance sensor optical fiber located outside the outer boundary membrane (A) The relative distance between the end of the needle 10 located in the outer boundary membrane A and the in vivo boundary membrane B and C is measured. (S302)

Subsequently, the axial depth of the tip of the injection needle 10 is adjusted based on the signal output from the distance sensor measuring unit 15 to be inserted into the living body.

And by using the distance sensor optical fiber end located outside the external boundary membrane (A) to measure the relative distance between the end of the needle 10 and the internal boundary membrane (B) (C) located in the external boundary membrane (A) It is determined whether the needle 10 is inserted to a desired depth. (S304)

If it is determined that the needle 10 is inserted to the desired depth, it is determined whether the fluid is injected into the body through the needle 10 (S304).

When the fluid is injected into the living body (S305), the fluid moving pressure unit 14 is driven to apply a pressure to inject the fluid into the living body (S306).

If the fluid is to be taken out of the living body (S307), the fluid moving pressure unit 14 is driven to apply a pressure to collect the fluid out of the living body (S308).

In this control operation, the depth of the needle 10 is adjusted by the operator by moving the handpiece 11 to change the axial depth of the tip of the needle 10 on the basis of the signal output from the distance sensor measuring unit 15. If the drive assembly is configured, or the drive assembly is configured based on the signal output from the distance sensor measuring unit 15 to adjust the axial depth of the end of the needle 10 to the movement of the drive assembly.

The depth control fluid movement medical tool and the control method thereof using the reflected light distance sensor according to the present invention as described above are for safely controlling the depth when the needle is inserted into the living body. Based on the information, the needle can be inserted to a precise depth, and the needle can safely insert an external liquid or gas into the living body or safely collect the liquid or gas inside the living body.

It will be understood that the present invention is implemented in a modified form without departing from the essential features of the present invention as described above.

Therefore, the described embodiments should be considered in descriptive sense only and not for purposes of limitation, and the scope of the present invention is shown in the claims rather than the foregoing description, and all differences within the equivalent scope are included in the present invention. It should be interpreted.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a depth control fluid movement medical tool using a reflected light distance sensor and a method of controlling the same, which allow the injection needle to be inserted to an accurate depth based on the information of the distance measured by the light reflected from the biological boundary membrane.

Claims

A handpiece for injecting or extracting fluid;

A needle fixed to the handpiece and exposed at one end inserted into the body;

A distance sensor optical fiber having a fixed distance to the end of the needle and attached to the needle to measure an axial distance according to the insertion of the needle;

A fluid movement pressure part for controlling the movement of the fluid inside the living body through the injection needle;

And a distance sensor measuring unit configured to output a signal for measuring a relative distance between the tip of the needle located in the ex vivo boundary membrane and the in vivo boundary membrane using the optical fiber tip located outside the ex vivo boundary membrane through the distance sensor optical fiber. Depth control fluid movement medical tool using a reflected light distance sensor.
The method of claim 1, wherein the handpiece,

A depth control fluid movement medical tool using a reflected light distance sensor, characterized in that directly attached to the needle and adjusts the axial depth of the end of the needle with the movement of the hand based on the signal output from the distance sensor measuring unit.
The method of claim 1, wherein the handpiece,

Depth adjustment fluid movement medical treatment using a reflected light distance sensor, characterized in that it is attached through the injection needle and the drive assembly and adjusts the axial depth of the end of the injection needle with the movement of the drive assembly based on the signal output from the distance sensor measuring unit tool.
4. The depth control fluid movement medical tool of claim 3, further comprising a drive controller in communication with the drive assembly to move the needle.
5. The instrument of claim 4, wherein the drive assembly comprises a piezo-electric micro motor.
The apparatus of claim 1, further comprising a data processor configured to communicate with the distance sensor measurer to receive a signal output from the distance sensor measurer to measure a distance.

And the data processor adjusts the axial depth of the tip of the needle according to the distance measurement result from the distance sensor measuring unit.
The fluid moving pressure unit of claim 1,

A depth control fluid movement medical tool using a reflected light distance sensor, characterized in that it is used as a means for applying a pressure for injecting a fluid into the body, or for applying a pressure to extract the fluid out of the body.
The method of claim 1, wherein the distance sensor measuring unit,

And a light detector optically connected to the distance sensor optical fiber and an optical detector optically connected to the distance sensor optical fiber.
10. The depth control fluid movement medical tool of claim 8, wherein the light source is a super light emitting diode.
9. The depth control fluid movement medical tool of claim 8, wherein the light source is a wavelength swept laser and the light detector is a photodetector.
10. The depth control fluid movement medical tool of claim 8, wherein the light detector is a spectrometer.
2. The depth control fluid movement medical tool of claim 1, wherein the fluid comprises a gas or a liquid or a gas and a liquid.
Inserting a syringe including a needle and a distance sensor optical fiber into a living body, measuring a relative distance between the tip of the needle located in the ex vivo boundary membrane and the in vivo boundary membrane using a distance sensor optical fiber tip located outside the ex vivo boundary membrane;

Inserting the inside of the living body by adjusting the axial depth of the tip of the needle based on the signal output from the distance sensor measuring unit;

Determining whether the needle is inserted to a desired depth based on the signal output from the distance sensor measuring unit;

When the needle is determined to be inserted to the desired depth, the step of injecting the fluid into the body through the needle, or extracting the fluid out of the body; Depth control fluid movement medical instrument using a depth-of-reflection light sensor comprising a Control method.
The method of claim 13, wherein the depth control of the needle,

A control method of a depth control fluid movement medical tool using a reflected light distance sensor, characterized in that for adjusting the axial depth of the end of the needle with the movement of the operator's hand based on the signal output from the distance sensor measuring unit.
The method of claim 13, wherein the depth control of the needle,

A control method of a depth control fluid movement medical tool using a reflected light distance sensor, characterized in that for adjusting the axial depth of the end of the needle with the movement of the drive assembly based on the signal output from the distance sensor measuring unit.