KR102159207B1 - Device for detection of blood vessel and surgical instrument for laparoscopy comprising the same - Google Patents

Abstract

The present invention relates to a blood vessel detection device and a laparoscopic surgery device including the same, wherein the blood vessel detection device according to the present invention includes a light emitting means 100 for emitting infrared light, a light emitting means 100 with a subject P interposed therebetween. A detection means for detecting the amount of infrared rays received by the light-receiving means 200 after passing through the light-receiving means 200, which is arranged so as to face the infrared rays emitted from the light-emitting means 100, and the subject P 300).

Description

A blood vessel detection device and a laparoscopic surgery device including the same {DEVICE FOR DETECTION OF BLOOD VESSEL AND SURGICAL INSTRUMENT FOR LAPAROSCOPY COMPRISING THE SAME}

The present invention relates to a blood vessel detection device and a laparoscopic surgery device including the same.

During various types of surgical operations, in order to prevent excessive bleeding of the patient and reduce the risk of other complications, blood vessels, etc., should be ligated before cutting the blood vessels. Various techniques exist for ligation of blood vessels and the like. One of them is to tie a suture around the blood vessel to close it. Another thing is that a doctor arranges a clip having a pair of legs around a blood vessel and compresses the legs of the clip, as shown in the patent document of the following prior literature. These clips may be ligated to blood vessels or the like through a surgical clip applicator.

Specifically, in a state in which a clip between a pair of jaws is disposed, the surgical clip applicator closes the clip while the pair of jaws are close to each other when a trigger is pulled. However, in the prior art, since it is difficult to accurately determine the location of the blood vessel, the clip may be closed while the blood vessel is not disposed between the legs of the clip and the blood vessel is disposed on the end of the leg of the clip. In this case, there is a problem that blood vessels may be damaged or cut by the ends of the legs of the clip, resulting in a large amount of bleeding.

KR 10-1298521 B1

The present invention is to solve the problems of the prior art described above, and an aspect of the present invention is to accurately detect the location of the blood vessel by detecting the amount of infrared light received by the light receiving means after passing through the subject. The present invention relates to a blood vessel detection device capable of closing a clip when placed in the appropriate position and a laparoscopic surgical device including the same.

The blood vessel detection device according to an embodiment of the present invention includes a light emitting means for emitting infrared light, a light receiving means for receiving infrared rays emitted from the light emitting means, and the subject being arranged to face the light emitting means with a subject interposed therebetween. And a detecting means for detecting the amount of infrared light received by the light receiving means after passing through.

In addition, in the blood vessel detection apparatus according to an embodiment of the present invention, when infrared rays emitted from the light emitting means pass through blood vessels, the amount of infrared rays detected by the detection means is compared to the amount of infrared rays emitted from the light emitting means. It decreases by more than a predetermined amount.

In addition, in the blood vessel detection device according to an embodiment of the present invention, when the infrared light emitted from the light emitting means passes through the blood vessel, the infrared light emitted from the light emitting means removes non-vascular tissues excluding non-permeable soft tissue and non-permeable hard tissue. Compared to the case of passing through, the amount of light detected by the detection means is small.

In addition, in the blood vessel detection device according to an embodiment of the present invention, the wavelength of infrared rays emitted from the light emitting means is 920 nm to 960 nm.

In addition, in the blood vessel detection device according to an embodiment of the present invention, the light emitting means is an emitter that converts electrical energy into light energy.

In addition, in the blood vessel detection apparatus according to an embodiment of the present invention, the light receiving means is a photo diode or a photo transistor that converts light into an electric signal.

In addition, in the blood vessel detection apparatus according to an embodiment of the present invention, the light emitting means emits infrared rays to be lit at a frequency of a predetermined range, and the light receiving means receives infrared rays that are lit at a frequency of a predetermined range, or the detection The means detects the infrared rays lighted at a frequency in a predetermined range among the infrared rays received by the light receiving means.

In addition, in the blood vessel detection apparatus according to an embodiment of the present invention, a band pass filter for selectively passing only infrared rays having a frequency in a predetermined range is disposed between the light emitting means and the light receiving means.

A laparoscopic surgery device including a blood vessel detection device according to an embodiment of the present invention includes a pair of jaws and a blood vessel detection device having a clip disposed on the inside and closing the clip while being close to each other, and the blood vessel The detection device is disposed in the pair of the jaws, the light emitting means for emitting infrared rays, the pair of the jaws, and arranged to face the light emitting means with a subject interposed therebetween, and the light emitted from the light emitting means And a light-receiving means for receiving infrared rays, and a detecting means for detecting an amount of infrared light received by the light-receiving means after passing through the subject.

In addition, in the laparoscopic surgery device including the blood vessel detection device according to an embodiment of the present invention, the light emitting means is disposed at the end of the first jaw, which is one of the pair of jaws, the light receiving means is the pair The other one of the jaws is placed at the end of the second jaw.

In addition, in the laparoscopic surgery apparatus including the blood vessel detection device according to an embodiment of the present invention, the light emitting means is disposed outside the first jaw, and the light receiving means is disposed outside the second jaw.

In addition, in the laparoscopic surgery device including the blood vessel detection device according to an embodiment of the present invention, when the first jaw and the second jaw extend in the longitudinal direction, the first jaw is from the end of the first jaw A first recessed portion recessed in the longitudinal direction is formed, and a second recessed portion recessed in the longitudinal direction from the end of the second jaw is formed in the second jaw, and the light emitting means is disposed in the first recessed portion, and the The light receiving means is disposed in the second depression.

In addition, in the laparoscopic surgery device including the blood vessel detection device according to an embodiment of the present invention, a third depression is formed outside the first jaw in a thickness direction, and a third depression is formed outside the second jaw in the thickness direction. A fourth recessed portion is formed, the light emitting means is disposed in the third recessed portion, and the light receiving means is disposed in the fourth recessed portion.

In addition, in the laparoscopic surgery apparatus including the blood vessel detection device according to an embodiment of the present invention, further comprising a representation means for transmitting the amount of infrared light detected by the detection means to the user.

In addition, in the laparoscopic surgery apparatus including the blood vessel detection device according to an embodiment of the present invention, the expression means, when the amount of infrared light detected by the detection means is within a predetermined range, that the amount of infrared light is within a predetermined range. Deliver it to the user.

In addition, in the laparoscopic surgery device including the blood vessel detection device according to an embodiment of the present invention, the expression means, after the amount of infrared light detected by the detection means is within a predetermined range, the infrared ray detected by the detection means When the amount of light fluctuates outside the predetermined range, it is communicated to the user that the amount of infrared light fluctuates.

In addition, in the laparoscopic surgery device including the blood vessel detection device according to an embodiment of the present invention, the expression means visually or aurally transmits to the user.

Features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings.

Prior to this, terms or words used in the present specification and claims should not be interpreted in a conventional and dictionary meaning, and the inventor may appropriately define the concept of the term in order to describe his own invention in the best way. It should be interpreted as a meaning and concept consistent with the technical idea of the present invention based on the principle that there is.

According to the present invention, the position of the blood vessel is accurately detected and the clip is closed when the blood vessel is placed in an appropriate position with respect to the clip, thereby preventing damage or cutting of the blood vessel, thereby preventing a large amount of bleeding.

1 is a conceptual diagram of a blood vessel detection device according to an embodiment of the present invention,
2 is a graph showing the amount of infrared light received from the light receiving means when the subject is air, non-vascular tissue, and blood vessels (vein, arterial), respectively, using the blood vessel detection device according to an embodiment of the present invention;
3 is a perspective view of a laparoscopic surgery device including a blood vessel detection device according to an embodiment of the present invention,
4 is an enlarged perspective view of the blood vessel detecting device and a pair of jaws shown in FIG. 3;
5A to 5B are partial plan views illustrating a process of ligating blood vessels by a laparoscopic surgery device including a blood vessel detection device according to an embodiment of the present invention, and
6A to 6B are photographs of a process of actually manufacturing and experimenting with a laparoscopic surgical device including a blood vessel detection device according to an embodiment of the present invention.

Objects, specific advantages and novel features of the present invention will become more apparent from the following detailed description and preferred embodiments associated with the accompanying drawings. In adding reference numerals to elements of each drawing in the present specification, it should be noted that, even though they are indicated on different drawings, only the same elements are to have the same number as possible. In addition, terms such as "first" and "second" are used to distinguish one component from other components, and the component is not limited by the terms. Hereinafter, in describing the present invention, detailed descriptions of related known technologies that may unnecessarily obscure the subject matter of the present invention will be omitted.

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

1 is a conceptual diagram of a blood vessel detection device according to an embodiment of the present invention.

As shown in Figure 1, the blood vessel detection device according to the present embodiment is arranged to face the light emitting means 100 with the light emitting means 100 for emitting infrared rays and the subject P interposed therebetween, the light emitting means ( And a light-receiving means 200 for receiving the infrared rays emitted from 100), and a detecting means 300 for detecting the amount of infrared light received by the light-receiving means 200 after passing through the subject P.

The light emitting means 100 serves to emit infrared rays, and is not particularly limited as long as it emits infrared rays, but may be, for example, an emitter that converts electrical energy into light energy. Here, the infrared rays emitted from the light-emitting means 100 pass through the subject P and are received by the light-receiving means 200. Meanwhile, the wavelength of infrared rays emitted from the light emitting means 100 may be 700 nm to 1000 nm, preferably 920 nm to 960 nm, and a detailed description thereof will be described later. Additionally, the power source 110 may be connected to the light emitting means 100 so as to supply electric energy to the light emitting means 100.

The light-receiving means 200 serves to receive infrared rays emitted by the light-emitting means 100, and is not particularly limited as long as it can receive infrared rays, but, for example, a photodiode for converting light into an electric signal ( It may be a photo diode) or a photo transistor. Here, the light-receiving means 200 is disposed to face the light-emitting means 100 with the subject P interposed therebetween, and the infrared rays emitted from the light-emitting means 100 pass through the subject P and then the light-receiving means ( 200). In this case, the amount of light emitted from the light-emitting means 100 may change while passing through the subject P, and the infrared ray having the changed light amount is received by the light-receiving means 200. The amount of light of the changed infrared rays differs depending on the type of the subject P, and detailed information related thereto will be described later.

The detection means 300 serves to detect the amount of infrared light received by the light receiving means 200 after passing through the subject P. Basically, the amount of infrared light emitted from the light emitting means 100 is predetermined and constant, and the amount of infrared light received by the light receiving means 200 is changed while passing through the subject P. In this way, when the changed amount of infrared light is detected by the detection means 300, the presence or absence and type of the subject P can be confirmed through the changed amount of infrared light, which will be described later. Additionally, between the light receiving means 200 and the detecting means 300, a DAQ 310 (Data acquisition) for generating data that can be manipulated by the detecting means 300 from the electric signal of the light receiving means 200 may be disposed. .

When the detection means 300 detects the amount of infrared light received by the light receiving means 200 after passing through the subject P, it is checked whether a blood vessel exists between the light emitting means 100 and the detection means 300. I can. Specifically, according to the specific structure of hemoglobin (Hb) of red blood cells that carry oxygen in the blood, light of a specific wavelength passing through the blood is absorbed. In particular, hemoglobin (Hb) of red blood cells has a high absorption rate when the wavelength of infrared rays is approximately 920 nm to 960 nm (more preferably 940 nm). Therefore, it is preferable that the wavelength of infrared rays emitted from the light emitting means 100 is 920 nm to 960 nm (more preferably 940 nm). That is, the light-emitting means 100 emits infrared rays having a wavelength of 920 nm to 960 nm, and when such infrared rays pass through blood vessels (blood), the light-receiving means 200 can receive the reduced amount of infrared rays, and finally detection. The means 300 detects the reduced amount of infrared light, thereby confirming that a blood vessel exists between the light emitting means 100 and the detection means 300.

2 is a graph showing the amount of infrared light received by the light receiving means when the subject is air, non-vascular tissue, and blood vessels (vein, arterial), respectively, using the blood vessel detection device according to an embodiment of the present invention.

Specifically, when the subject is air or non-vascular tissue, the amount of infrared light received by the light receiving means 200 is relatively large, but when the subject is a vein or artery, the amount of infrared light received by the light receiving means 200 is relatively high. Was small. In addition, when the subject is air or non-vascular tissue and the subject is a vein or artery, a difference in the amount of infrared rays received by the light receiving means 200 is clearly distinguished. As a result, when the infrared light emitted from the light emitting means 100 passes through a blood vessel (vein or artery), the amount of infrared light detected by the detection means 300 is a predetermined amount compared to the amount of infrared light emitted from the light emitting means 100 It was confirmed that the abnormality decreased. In addition, when the infrared ray emitted from the light emitting means 100 passes through the blood vessel, the amount of light detected by the detection means 300 is smaller than the case where the infrared ray emitted from the light emitting means 100 passes through the non-vascular tissue. I could also confirm.

As a result, the blood vessel detection device according to the present embodiment can clearly confirm the difference in the amount of light between the blood vessel and the non-vascular tissue, so that the presence or absence of a blood vessel between the light emitting means 100 and the light receiving means 200 is clear even inside the body. It can be detected.

However, when the subject is a non-permeable soft tissue (eg, large intestine) or a non-permeable hard tissue (eg, bone), infrared rays received by the light receiving means 200 were very small because most of the infrared rays were blocked. That is, it can be confirmed that the amount of light detected by the detection means 300 is smaller when the infrared rays emitted from the light emitting means 100 pass through the non-transmissive soft tissue/hard tissue compared to the case when passing through the blood vessel.

As a result, when the infrared light emitted from the light emitting means 100 passes through the blood vessel, the amount of light detected by the detection means 300 is larger than when passing through the non-transparent soft tissue/hard tissue, and non-vascular except for the non-transparent soft tissue/hard tissue Compared to the case of passing through the tissue, the amount of light detected by the detection means 300 is small.
When the infrared light emitted from the light emitting means 100 passes through the blood vessel, the amount of infrared light detected by the detection means 300 decreases by a first predetermined amount or more compared to the amount of infrared light emitted from the light emitting means 100 ( It is larger than the reduction amount when passing through the vascular tissue), and decreases by the second predetermined amount or less (less than the reduction amount when passing through the impermeable soft tissue/hard tissue).

In summary, the amount of infrared light detected by the detection means 300 is the largest when passing through non-vascular tissues (excluding non-transmissive soft tissues or non-transmissive hard tissues), followed by passing through blood vessels, and non-transmitting soft tissues or It is the smallest case that passes through the non-translucent hard tissue.

Meanwhile, in the blood vessel detection apparatus according to the present embodiment, it was confirmed that the peak wavelength of infrared rays emitted from the light emitting means 100 and the peak wavelength of infrared rays received from the light receiving means 200 match. Therefore, it was confirmed that the blood vessel detection device according to the present embodiment has considerable accuracy.

In addition, the blood vessel detection apparatus according to the present embodiment may use infrared rays that are lit at a frequency of a predetermined range in order to reduce external infrared rays and electrical noise. Specifically, the light emitting means 100 emits infrared rays so that the input voltage is periodically changed to a frequency generator (oscilloscope) to be turned on at a frequency in a predetermined range. At this time, the light-receiving means 200 only receives infrared light that is lit at a frequency of a predetermined range, or the detection means 300 is based on the infrared light that is lit with only a predetermined range of infrared rays received by the light-receiving means 200 Only detect the amount of light. In this way, since the amount of light is finally detected using only the infrared light that is lit with only a predetermined range of frequencies, noise (light other than the infrared light emitted from the light emitting means 100) is blocked, thereby increasing the accuracy of the blood vessel detection device. .

In addition, in the blood vessel detection apparatus according to the present embodiment, a band pass filter may be used to reduce noise. Specifically, a band pass filter for selectively passing only infrared rays having a frequency in a predetermined range may be disposed between the light emitting means 100 and the light receiving means 200. Since the band pass filter selectively passes only infrared rays having a frequency within a certain range from the frequency of the infrared rays emitted by the light emitting means 100, the accuracy of the blood vessel detection device can be improved.

3 is a perspective view of a laparoscopic surgery device including a blood vessel detection device according to an embodiment of the present invention.

As shown in Figure 3, the laparoscopic surgery device including the blood vessel detection device according to the present embodiment has a clip disposed on the inside, a pair of jaws (20, jaw) closing the clip while being close to each other, and blood vessel detection Including a device, the blood vessel detection device is disposed in a pair of jaws 20, the light emitting means 100 for emitting infrared rays, and arranged in the pair of jaws 20, the light emitting means ( 100), the light-receiving means 200 for receiving the infrared light emitted from the light-emitting means 100, and the detection means for detecting the amount of infrared light received by the light-receiving means 200 after passing through the subject. Include.

When viewed from the exterior, the laparoscopic surgery device including the blood vessel detection device according to the present embodiment is disposed at the end of the main body 50, the shaft 30 extending from one side of the main body 50, and the shaft 30 It may include a pair of jaws 20 and the like.

Basically, the laparoscopic surgery device including the blood vessel detection device according to the present embodiment may be used to mount a clip in the body through a trocar or the like. Specifically, a clip is disposed inside the pair of jaws 20, and when the trigger 10 is pulled, the pair of jaws 20 close to each other and close the clip, so that the clip can be ligated to blood vessels, etc. . After the clips are ligated, a new clip can be mounted on the pair of jaws 20. Meanwhile, when the rotation knob 40 provided between the shaft 30 and the body 50 is rotated, a pair of jaws 20 may be rotated together with the shaft 30.

The laparoscopic surgery device including the blood vessel detection device according to the present embodiment applies the blood vessel detection device according to the above-described embodiment to a laparoscopic surgery device. Therefore, the basic configuration of the blood vessel detection device is the same as the above-described embodiment. However, in this embodiment, in order to accurately detect blood vessels in the laparoscopic surgery device, a blood vessel detection device is optimally combined with the laparoscopic surgery device.

Specifically, the light emitting means 100 and the light receiving means 200 are disposed in a pair of jaws 20. More specifically, the light emitting means 100 is disposed at the end of the first jaw 21, which is one of the pair of jaws 20, and the second jaw 22, which is the other of the pair of jaws 20 At the end of the light receiving means 200 may be disposed. Since the pair of jaws 20 extend to face each other, and a subject (vascular or non-vascular tissue, etc.) is disposed between them, the light emitting means 100 is disposed at the end of the first jaw 21, 2 When the light-receiving means 200 is disposed at the end of the jaw 23, the light-emitting means 100 and the light-receiving means 200 can be disposed to face each other naturally with a subject (vascular or non-vascular tissue, etc.) interposed therebetween. have.

On the other hand, since the clip is mounted on the inside of the pair of jaws 20 and finally the clip is closed, in order to prevent obstruction of the closing of the clip, the light emitting means 100 and the light receiving means 200 are provided with a pair of jaws. It may be disposed on the outside of (20) (the inner side and the opposite side where the clip is disposed). That is, the light emitting means 100 may be disposed outside the first jaw 21, and the light receiving means 200 may be disposed outside the second jaw 22.

However, when the light emitting means 100 and the light receiving means 200 are disposed outside the pair of jaws 20, infrared rays emitted from the light emitting means 100 are blocked by the pair of jaws 20 to receive light There is a possibility that the light may not be received by the means 200. Therefore, as shown in FIG. 4, the first and second recesses 21a and 22a are formed in the pair of jaws 20, and the light emitting means 100 is formed in the first and second recesses 21a and 22a. ) And the light receiving means 200 may be disposed. Specifically, when the first jaw 21 and the second jaw 22 extend in the longitudinal direction, the first jaw 21 is recessed in the longitudinal direction from the end of the first jaw 21 (shaft 30) A first depression (21a) is formed in the second jaw (22), and a second depression (depressed in the shaft 30 direction) longitudinally from the end of the second jaw (22) A portion 22a may be formed. In this case, the light emitting means 100 may be disposed in the first recessed portion 21a, and the light receiving means 200 may be disposed in the second recessed portion 22a. In this way, when the light emitting means 100 is disposed in the first recessed part 21a and the light receiving means 200 is disposed in the second recessed part 22a, the infrared rays emitted from the light emitting means 100 are first, 2 Can be received by the light receiving means 200 without being blocked by the jaws (21, 22). However, not all portions of the light-emitting means 100 and the light-receiving means 200 must be disposed in the first and second depressions 21a and 22a. For example, a portion of the light-emitting means 100 to which an actual infrared ray is emitted and a portion of the light-receiving means 200 to which an actual infrared ray is received are disposed in the first and second depressions 21a and 22a, and the light-emitting means 100 The PCB of the PCB or the PCB of the light receiving means 200 need not necessarily be disposed in the first and second depressions 21a and 22a.

On the other hand, when the light-emitting means 100 and the light-receiving means 200 are disposed in the pair of jaws 20, the light-emitting means 100 and the light-receiving means 200 protrude from the first and second jaws 21 and 22. If so, it may become an obstacle in the actual laparoscopic surgery process. Accordingly, the first and second jaws 21 and 22 are formed with third and fourth depressions 21b and 22b, and the light emitting means 100 and the light receiving means are formed in the third and fourth depressions 21b and 22b. 200) can be deployed. Specifically, a third recessed portion 21b recessed in the thickness direction is formed outside the first jaw 21, and a fourth recessed portion 22b recessed in the thickness direction is formed outside the second jaw 22 Can be formed. In this case, the light-emitting means 100 may be disposed in the third recessed portion 21b, and the light receiving means 200 may be disposed in the fourth recessed portion 22b. In this way, when the light emitting means 100 is disposed in the third recessed portion 21b and the light receiving means 200 is disposed in the fourth recessed portion 22b, the light emitting means 100 and the light receiving means 200 are Since it does not protrude from the 1,2 jaws 21 and 22, it is possible to prevent the light emitting means 100 and the light receiving means 200 from becoming an obstructive factor in the laparoscopic surgery process.

In addition, as shown in FIG. 3, a control unit 400 including a detection means or the like may be disposed on one side (eg, rear) of the main body 50 in the form of a substrate, and this control unit 400 emits light. The means 100 and the light receiving means 200 and the electric wire 60 may be electrically connected.

Additionally, expression means for transmitting the amount of light detected by the detection means to the user may be provided.

As previously discussed, the amount of infrared light detected by the detection means is the largest when infrared rays pass through non-vascular tissues (excluding non-transparent soft tissue/hard tissue), followed by passing through blood vessels, and non-transparent soft tissue/hard tissue. It is the smallest case that passes through. Therefore, based on when the amount of infrared light detected by the detection means is the first predetermined value, it is possible to distinguish between a case where the infrared ray passes through a non-vascular tissue (excluding non-transmissive soft tissue/hard tissue) and a case that passes through a blood vessel. Based on a case where the detected amount of infrared light is a second predetermined value, a case where the infrared ray passes through a blood vessel and a case where it passes through a non-transparent soft tissue/hard tissue can be distinguished. In summary, when the amount of infrared light detected by the detection means exceeds a first predetermined value, the non-vascular tissue (non-transmissive soft tissue) between the light emitting means 100 and the light receiving means 200 (between the pair of jaws 20) /Excluding hard tissue) was deployed. In addition, when the amount of infrared light detected by the detection means is less than or equal to the first predetermined value and more than or equal to the second predetermined value, the blood vessel is disposed between the light emitting means 100 and the light receiving means 200 (between the pair of jaws 20). It can be confirmed that it has become. And, when the amount of infrared light detected by the detection means is less than the second predetermined value, it is determined that the non-transparent soft tissue/hard tissue is disposed between the light emitting means 100 and the light receiving means 200 (between a pair of jaws 20). I can confirm.

As a result, when the amount of infrared light detected by the detection means is within a predetermined range (below the first predetermined value and above the second predetermined value), between the light emitting means 100 and the light receiving means 200 (a pair of jaws 20 ) Between)).

The expression means may be visually or audibly delivered to the user, and may be a display 500 (visual) or a buzzer sound generator (audible).

Specifically, when the expression means is the display 500, the display 500 may be disposed on one side (rear, near the control unit 400) of the main body 50. The display 500 may display the amount of light in a flexible numeric display (FND) format. For example, the smaller the FND value, the smaller the amount of infrared light detected by the detection means, and the larger the FND value, the larger the amount of infrared light detected by the detection means. Accordingly, when the amount of infrared light detected by the detection means is within a predetermined range, the display 500 may communicate to the user that the amount of infrared light is within a predetermined range through the FND value. For example, if the amount of infrared light detected by the detection means is within a predetermined range, the display 500 displays an FND value within a specific range, and at that time, a blood vessel is placed between the light emitting means 100 and the light receiving means 200. You can confirm that it has become.

In addition, when the expression means is a buzzer sound generator, the buzzer sound generator may be disposed on one side (not shown) of the main body 50. The buzzer sound generator can also transmit to the user that the amount of infrared light detected by the detection means is within a predetermined range. For example, if the amount of infrared light detected by the detection means is within a predetermined range, the buzzer sound generator generates a buzzer sound, and at that time, it can be confirmed that a blood vessel is disposed between the light emitting means 100 and the light receiving means 200. .

That is, the expression means (display 500 or buzzer sound generator) indicates that when the amount of light detected by the detection means is within a predetermined range, the user through the FND value of the display 500 or the buzzer sound of the buzzer sound generator Can be delivered to

However, since the light-emitting means 100 and the light-receiving means 200 are disposed at the ends of the pair of jaws 20, at the moment when the amount of infrared light is within a predetermined range, on the ends (clip ends) of the pair of jaws 20 Blood vessels may be arranged in the. Therefore, if the clip is closed at this moment, there is a risk of damage to the blood vessel by the end of the clip. In order to solve this concern, after receiving that the amount of infrared light is within a predetermined range from the expression means, the user moves the pair of jaws 20 forward by a certain distance to place the blood vessel in an appropriate position (inside of the clip) with respect to the clip. I can make it.

As described above, the blood vessel may be placed in an appropriate position by the user's manipulation, but the present invention is not limited thereto, and the expression means may more accurately convey that the blood vessel is placed in an appropriate position.

Specifically, when the amount of infrared light detected by the detection means is within a predetermined range, and the amount of infrared light detected by the detection means changes outside the predetermined range, the expression means can communicate to the user that the amount of infrared light has changed. When the blood vessel V is disposed between the light emitting means 100 and the light receiving means 200 (between the ends of a pair of jaws 20) (see Fig. 5A), the amount of light detected by the detection means is within a predetermined range. . Thereafter, when the pair of jaws 20 is advanced so that the blood vessel V is placed at an appropriate position (inside of the clip) with respect to the clip (see Fig. 5B), the amount of light detected by the detection means is outside the predetermined range. That is, when the amount of infrared light is within a predetermined range and then changes outside the predetermined range, the expression means can determine that the blood vessel V is disposed at an appropriate position (inside of the clip) with respect to the clip. At this time, the expression means is to transmit the light to the user 300 by emitting a specific color of the display 500 or a buzzer sound of a buzzer sound generator. As a result, the user can accurately receive through the expression means that the blood vessel has been placed in an appropriate position.

Accordingly, the user can accurately detect the location of the blood vessel through the laparoscopic surgery device including the blood vessel detection device according to the present embodiment, and close the clip when the blood vessel is placed in an appropriate position with respect to the clip. As a result, it is possible to prevent blood vessels from being damaged or cut, thereby preventing massive bleeding.

In the above description, the expression means is described as being either the display 500 or the buzzer sound generator, but it is not limited thereto, and both can be used simultaneously.

Meanwhile, an experiment was performed to evaluate the performance by actually manufacturing a laparoscopic surgical device including a blood vessel detection device according to the present embodiment.

Specifically, three experimental rabbits (NZW, New Zealand White) were used, and experiments were performed on the vascular tissues of rabbits: the femoral vein/artery, the carotid artery, the jugular vein, and the abdominal aorta, and the non-vascular tissues of rabbits: esophagus, small intestine, Experiments were performed on the large intestine (impermeable soft tissue), skin, muscle, fat, and tendon. At this time, as shown in Figs. 6A to 6B, after exposing the vascular tissues and non-vascular tissues of the rabbit, the laparoscopic surgery device including the vascular detection device measures 10 times for 3 animals and displays them on the display. The resulting FND value was recorded. The average of the FND values over 10 times (Mean) is shown in Table 1 below.

Application part FND value per object evaluation #One #2 #3 Vascular tissue
(5≤FND≤25) Femoral vein/artery 20.44 19.5 24.1 3/3 carotid 17.7 17.3 23.8 3/3 Jugular vein 15.9 15.7 17.1 3/3 Abdominal aorta 14.1 11.4 11.89 3/3 Non-vascular tissue
(FND<5, FND>25) esophagus 60.2 59.6 57.3 0/3 Intestine 50.2 52.6 52.6 0/3 Leader 2.97 3.01 0.8 0/3 skin 52.35 49.9 51.1 0/3 muscle 70.2 69.6 56.9 0/3 Fat 45.6 46.3 53.9 0/3 key 26.5 27.6 26.3 0/3 Blood vessel detection rate for vascular tissue 12/12 (100%) Blood vessel false detection rate for non-vascular tissue 0/21 (0%)

If the FND value is 5 or more and 25 or less, it was set as vascular tissue (infrared light amount is within a predetermined range), and if the FND value is less than 5 or more than 25, it is set as non-vascular tissue (infrared light amount is outside the predetermined range). As a result, as shown in the above table, the FND value was measured to be 5 to 25 in all cases of vascular tissue, and the FND value was measured to be less than 5 and more than 25 in all cases of non-vascular tissue. As a result, the laparoscopic surgery device including the blood vessel detection device according to the present embodiment can accurately detect the presence or absence of vascular tissue 100% based on a predetermined range (FND value 5 to 25), and can clearly detect vascular tissue and non-vascular tissue. It can be classified as such, and it can be confirmed that it can be sufficiently utilized in actual laparoscopic surgery.

Although the present invention has been described in detail through specific examples, this is for explaining the present invention in detail, and the present invention is not limited thereto, and those of ordinary skill in the art within the spirit of the present invention It is clear that the transformation or improvement is possible.

All simple modifications to changes of the present invention belong to the scope of the present invention, and the specific scope of protection of the present invention will be made clear by the appended claims.

10: trigger 20: a pair of jaws
21: first article 21a: first depression
21b: third depression 22: second jaw
22a: second depression 22b: fourth depression
30: shaft 40: rotary knob
50: main body 60: electric wire
100: light emitting means 110: power supply
200: light receiving means 300: detection means
310: DAQ 400: control unit
500: display P: subject
V: blood vessel

Claims (5)

Light emitting means for emitting infrared light;
Light-receiving means disposed to face the light-emitting means with a subject interposed therebetween, and receiving infrared rays emitted from the light-emitting means; And
Detection means for detecting an amount of infrared light received by the light receiving means after passing through the subject;
Including,
When the infrared light emitted from the light emitting means passes through the blood vessel,
The amount of infrared light detected by the detection means decreases by a first predetermined amount or more and decreases by a second predetermined amount or less compared to the amount of infrared light emitted by the light-emitting means,
Further comprising a representation means for transmitting the amount of light detected by the detection means to the user,
The expression means displays the amount of light in FND (Flexible Numeric Display) format,
The smaller the FND value, the smaller the amount of infrared light detected by the detection means, and the larger the FND value, the larger the amount of infrared rays detected by the detection means,
When the detection means detects the amount of infrared light passing through the blood vessel, the FND value is 5 or more and 25 or less,
The light emitting means emits infrared rays so that it is lit at a frequency in a predetermined range,
The light-receiving means receives only infrared rays that are lit at a frequency of the predetermined range, or the detection means detects only infrared rays that are lit at a frequency of the predetermined range among the infrared rays received by the light receiving means.
delete The method according to claim 1,
The wavelength of infrared rays emitted from the light emitting means is 920nm to 960nm blood vessel detection device.
delete The method according to claim 1,
A blood vessel detection device in which a band pass filter is disposed between the light emitting means and the light receiving means to selectively pass only infrared rays having a frequency in a predetermined range.

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