JP6933836B2 - A pinch-type biological tissue information measuring device and a pinch-type biological tissue information measuring method - Google Patents

Description

The present invention relates to a sandwich-type biological tissue information measuring device that sandwiches a biological tissue and measures biological tissue information that is information about the biological tissue, and a sandwich-type biological tissue information measuring method.

Conventionally, an endoscopic system that grasps both blood vessel shape information such as surface microvessels and oxygen saturation of blood hemoglobin has been known in diagnosing lesions.

In addition, such an endoscopic system is used to grasp both blood vessel shape information such as surface microvessels used for diagnosing lesions such as cancer and oxygen saturation of blood hemoglobin (for example,). See Patent Document 1).

On the other hand, in addition to diagnosis, in the scene of surgery or examination, it is possible to acquire biological tissue information (for example, oxygen saturation) which is information on the biological tissue of the site to be operated, examined, or diagnosed, or the surrounding site. It has been demanded.

Therefore, in recent years, technological development has been promoted for a measuring instrument having a light emitting unit and a light receiving unit and measuring biological tissue information which is information on biological tissue.

Japanese Unexamined Patent Publication No. 2013-013656

However, the conventional biological tissue information measuring instrument has not yet acquired the biological tissue information which is highly reliable information on the biological tissue.

Therefore, in view of the above circumstances, the present invention provides a sandwich-type biological tissue information measuring device and a sandwich-type biological tissue information measuring method capable of acquiring highly reliable biological tissue information. The purpose is to do that.

In order to solve the above problems, in the biological tissue information measuring instrument according to the present invention, the first arm and the second arm facing each other, and the first arm and the second arm can be separated from each other. A connecting portion that connects one end of the first arm and one end of the second arm, a light emitting portion that irradiates measurement light toward a living tissue, and a light emitting portion that is arranged in the first arm. It is provided with a light receiving unit that receives the light transmitted from the inside of the living tissue by the measurement light emitted from the living tissue, and the living tissue is sandwiched between the first arm and the second arm to measure the living tissue information which is information about the living tissue. To do.

Further, in the method for measuring biological tissue information according to the present invention, one end of the first arm and the first arm so that the first arm and the second arm facing each other and the first arm and the second arm can be separated from each other can be separated from each other. A method for measuring pinch-type biotissue information using a pinch-type biotissue information measuring device including a connecting portion for connecting one end of two arms, and measuring from a light emitting portion arranged on the first arm toward the biological tissue. A light emitting step for irradiating light, a light receiving step arranged on the first arm for receiving measurement light emitted from the light emitting part and propagating inside the living tissue, and a first arm and a second arm. It includes a measurement step of measuring biological tissue information, which is information about biological tissue, by sandwiching the biological tissue.

According to the sandwich-type biological tissue information measuring device and the sandwich-type biological tissue information measuring method according to the present invention, it is possible to acquire biological tissue information which is highly reliable information on biological tissue.

It is a figure which shows the 1st Embodiment of the sandwich type biological information measuring instrument which concerns on this invention. It is a block diagram which shows an example of the main part composition of the sandwich type biological information measuring apparatus 100 and the measuring apparatus main body 200. It is a figure which shows the 2nd Embodiment of the sandwich type biological information measuring instrument which concerns on this invention. It is a figure which shows the modification of the 2nd Embodiment of the sandwich type biological information measuring instrument which concerns on this invention. It is a figure which shows the 3rd Embodiment of the sandwich type biological information measuring instrument which concerns on this invention. It is a figure which shows the modification of the 3rd Embodiment of the sandwich type biological information measuring instrument which concerns on this invention.

Hereinafter, embodiments of the sandwich-type biological information measuring instrument 100 of the present invention will be described with reference to FIGS. 1 to 6.

[First Embodiment]
FIG. 1 is a diagram showing a first embodiment of a sandwich-type biological information measuring instrument according to the present invention.
FIG. 1A is a diagram showing a state before sandwiching the biological tissue X, and FIG. 1B is a diagram showing a state in which the biological tissue X is sandwiched.

As shown in FIG. 1, the sandwiching type biometric information measuring instrument 100 according to the first embodiment of the present invention includes a first arm 1 and a second arm 2 facing each other, and a first arm 1 and a second arm. Measured toward the living tissue X arranged on the first arm 1 and the connecting portion 3 that connects one end of the first arm 1 and one end of the second arm 2 so that the two can be separated from each other. The first arm includes a light emitting unit L that irradiates light and a light receiving unit P that is arranged on the first arm 1 and receives the light that the measurement light emitted from the light emitting unit L propagates inside the living tissue X. It is characterized in that the biological tissue X is sandwiched between the 1 and the second arm 2 and the biological tissue information which is the information about the biological tissue X is measured.

As shown in FIG. 1A, the first arm 1 and the second arm 2 face each other, and one end of the first arm 1 and one end of the second arm 2 are connected by a connecting portion 3. , The first arm 1 and the second arm 2 can be detached from each other.

The connecting portion 3 is not particularly limited as long as it has a structure that allows the first arm 1 and the second arm 2 to be separated from each other. As the connecting portion 3, for example, materials such as stainless steel, titanium alloy, ABS resin, Delrin resin, and polycarbonate resin can be used.

Here, "freely detachable" means that the opposing first arm 1 and the second arm 2 can be changed from a state in which they are separated from each other to a state in which they are close to each other, and further, the opposing first arm 1 and the second arm are opposed to each other. It means that it is possible to shift from a state in which 2 and 2 are close to each other to a state in which they are separated from each other.

As shown in FIG. 1A, the sandwiching type biological information measuring device 100 in the state before sandwiching the biological tissue X faces each other so as to be easily sandwiched regardless of the size and shape of the biological tissue X to be measured. The first arm 1 and the second arm 2 can be separated from each other in the range of 0 ° to 45 ° and at intervals of 0 mm to 25 mm.

On the other hand, as shown in FIG. 1B, the sandwiching type biological information measuring device 100 in the state of sandwiching the biological tissue X is attached to the first arm 1 regardless of the size and shape of the biological tissue X to be measured. It is possible to maintain a state in which the arranged light emitting unit L and the light receiving unit P are in close contact with the biological tissue X.

As described above, in the sandwiching type biological information measuring instrument 100 according to the present invention, since the opposing first arm 1 and the second arm 2 can be detached from each other, the living tissue X is before being sandwiched. It is configured so that X can be easily sandwiched, and after the biological tissue X is sandwiched, the light emitting portion L and the light receiving portion P arranged on the first arm 1 can be easily brought into close contact with the biological tissue X.

Further, the sandwiching type biological information measuring device 100 according to the present invention has a function of freely adjusting the detached state of the first arm 1 and the second arm 2 according to the size and shape of the biological tissue X to be measured. It can also have a function of maintaining a constant adjusted state.

With the pinch-type biometric information measuring device 100 according to the present invention, the site to be operated on in all surgical situations such as endoscopic surgery, laparoscopic surgery, minimally invasive surgery, and open chest / abdominal / craniotomy. Alternatively, the biological tissue X in the peripheral portion is sandwiched between the first arm 1 and the second arm 2, and the light emitting portion L and the light receiving portion P arranged in the first arm 1 are brought into close contact with each other to provide information on the biological tissue X. It is possible to acquire certain biological tissue information.

In addition, in the case of the sandwich type biological information measuring instrument 100 according to the present invention, biological tissue information which is information on the biological tissue X of the site to be inspected / diagnosed or the peripheral portion thereof can be acquired in all situations of inspection / diagnosis. You can also do it.

In this way, it is possible to accurately grasp information such as whether or not the biological tissue X is necrotic and whether or not the activity of the biological tissue X is normal at the site to be operated, examined, or diagnosed, or the peripheral site thereof. It is possible to obtain information that contributes to the decision to perform surgery, examination, and diagnosis safely and accurately.

Further, the sandwiching type biological information measuring instrument 100 according to the present invention can hold any living tissue X of a human or an animal as long as it has a shape that can be sandwiched between the first arm 1 and the second arm 2. It can be a measurement target.

Specifically, the biological tissue X of all organs such as the digestive organs, the urinary organs, the intestinal tract, the liver, the kidneys, the heart, and the pancreas is sandwiched between the first arm 1 and the second arm 2 to provide information on the biological tissue X. It is possible to measure certain biological tissue information.

The materials of the first arm 1 and the second arm 2 are not particularly limited, and for example, materials such as stainless steel, titanium alloy, ABS resin, delrin, silicon resin, fluororesin, and vinyl chloride can be used.

The first arm 1 is different from the configuration of the second arm 2 in that a light emitting unit L and a light receiving unit P are arranged. The method of arranging the light emitting unit L and the light receiving unit P on the first arm 1 is not particularly limited as long as the light emitting unit L and the light receiving unit P can be fixedly arranged so as to be at a predetermined distance.

For example, a tube having a hollow inside is used as the first arm 1, and the light emitting portion L and the light receiving portion P are incorporated inside the first arm 1, so that the light emitting portion penetrates between the outside and the inside of the first arm 1. A hole for L and a hole for the light receiving portion P are formed at predetermined positions of the first arm 1, respectively.

When a hole for the light emitting portion L and a hole for the light receiving portion P are formed at predetermined positions of the first arm 1, respectively, in the vicinity of these holes so that body fluid such as blood does not enter these holes. Is preferably filled with a silicon resin, an epoxy resin, or the like.

In the present invention, from the viewpoint of obtaining the measurement result of the biological tissue information which is the highly reliable information on the biological tissue X, the light emitting unit L and the light receiving unit P arranged on the first arm 1 are set to a predetermined distance, that is, As shown in FIG. 1B, it is preferable that the distance D between the centers of the light emitting unit L and the light receiving unit P is a predetermined distance.

The applicant has obtained the finding that the distance D between the centers of the light emitting unit L and the light receiving unit P affects the range of the depth of the biological tissue X that can be measured according to the distance between the centers. Specifically, it is possible to measure biological tissue information which is information about biological tissue X in a depth range of 70 to 80% with respect to the center-to-center distance D between the light emitting unit L and the light receiving unit P.

Specifically, the center-to-center distance D between the light emitting unit L and the light receiving unit P is preferably the center-to-center distance D≈10 mm (including an error) and the center-to-center distance D≈6 mm (including an error). In particular, from the viewpoint of obtaining the measurement result of the biological tissue information which is the highly reliable information on the biological tissue X, it is more preferable to set the center-to-center distance D≈6 mm (including an error).

If the distance D between the centers of the light emitting unit L and the light receiving unit P is 10 mm, the measurable depth range of the biological tissue X is the information about the biological tissue X at a depth of 7 to 8 mm from the surface of the biological tissue X. It enables measurement of certain biological tissue information.

Further, if the distance D between the centers of the light emitting portion L and the light receiving portion P is 6 mm, the measurable depth range of the biological tissue X is 4.2 to 4.8 mm from the surface of the biological tissue X. It enables measurement of biological tissue information, which is information related to biological tissue X.

The form in which the light emitting unit L and the light receiving unit P are incorporated inside the first arm 1 has been described above, but the present invention is not limited to this, and the light emitting unit L and the light receiving unit P arranged in the first arm 1 have a pair as the minimum unit. It can be designed as a pair of light emitting / receiving units so as to be detachable from the first arm 1.

Since it is not necessary to dispose the light emitting portion L and the light receiving portion P in the second arm 2 as in the first arm 1, it is not necessary to use a tube having a hollow inside as the second arm 2, but the second arm 2 From the viewpoint of weight reduction, the arm may use a tube having a hollow inside as in the first arm 1.

As shown in FIG. 1A, the sandwich-type biometric information measuring instrument 100 according to the first embodiment of the present invention has a first aspect in the longitudinal direction of the elongated base portion 4 to be joined to the connecting portion 3. A handle portion 5 for the operator to grasp and operate the arm 1 and the second arm 2 so that the arm 1 and the second arm 2 can be detached from each other can be provided.

The base portion 4 is not particularly limited as long as it has a structure in which the base portion 4 is joined to the connecting portion 3 and the handle portion 5 is provided in the longitudinal direction thereof. As the base 4, for example, a material such as stainless steel, titanium alloy, ABS resin, Delrin resin, or polycarbonate resin can be used.

The handle portion 5 is not particularly limited as long as it has a structure in which the first arm 1 and the second arm 2 can be separated from each other according to the operation by the operator's grip. As the handle portion 5, for example, a material such as stainless steel, titanium alloy, ABS resin, Delrin resin, or polycarbonate resin can be used.

FIG. 2 is a block diagram showing an example of the main configuration of the sandwich-type biological information measuring device 100 and the measuring device main body 200.

(Structure of pinch type biometric information measuring instrument 100)
As shown in FIG. 2, the sandwiching type biometric information measuring instrument 100 according to the present invention has a configuration including a light emitting unit L and a light receiving unit P.

The light emitting unit L has a function of irradiating the measuring light toward the biological tissue X. As the light emitting unit L, for example, a light emitting diode (LED) can be used. The wiring of the light emitting unit L is connected to the light source control unit 11 included in the measuring device main body 200.

The method of irradiating the measurement light from the light emitting unit L is not particularly limited, but three different wavelengths (first wavelength λ ₁ (770 nm ± 20 nm), second wavelength λ ₂ (805 nm ± 20 nm), and third wavelength λ _3). (870 nm ± 20 nm)) near-infrared light is used, and it is preferable to irradiate (light) each of them in a predetermined order, time, and interval.

The light receiving unit P has a function of receiving the light emitted from the light emitting unit L and propagating inside the biological tissue X. As the light receiving unit P, for example, a photodiode (PD) can be used. The wiring of the light receiving unit P is connected to the measuring unit 12 included in the measuring device main body 200.

For example, the wiring of the light emitting unit L and the wiring of the light receiving unit P are pulled out from the handle portion 5 shown in FIG. 1 by a required length, and are connected to the optical control unit 11 and the measuring unit 12 included in the measuring device main body 200, respectively. Can be connected.

The sandwiching type biological information measuring device 100 includes a light emitting unit L and a light receiving unit P, as well as a measuring unit (not shown), a determination unit (not shown), a notification unit (not shown), and a display unit (not shown) shown below. The configuration may include a storage unit (not shown) and a storage unit (not shown).

The measuring unit detects the light intensity received by the light receiving unit P, and uses the information based on the detected light intensity as information on the biological tissue X such as information on oxygen saturation, hemoglobin amount, or blood flow. It has a function to perform arithmetic processing for converting into information.

The determination unit monitors the biological tissue information, which is information about the biological tissue X obtained by arithmetic processing in the measurement unit, over time, and when the biological tissue information changes, the rate of change of the biological tissue information. Has a function of determining whether or not the value exceeds a predetermined reference value.

Here, the "predetermined reference value" is, for example, a change in the intensity of light transmitted without being absorbed by the living tissue X (intensity of transmitted light) is monitored over time, and a certain reference value is set for the rate of the change. It can be provided and set as a predetermined reference value.

The notification unit has a function of notifying the outside (for example, a medical worker) when the determination unit determines that the predetermined reference value has been exceeded.

Specifically, as shown in FIG. 1 (b), in a state where the biological tissue X is sandwiched between the first arm 1 and the second arm 2, the biological tissue information which is the information about the biological tissue X is obtained over time. When the determination unit determines that the rate of change in the biological tissue information exceeds a predetermined reference value by monitoring, it can notify the medical staff or the like by using a display means, a voice means, or the like.

The display unit has a function of displaying display information based on the information acquired by each unit included in the sandwich-type biological information measuring device 100. The display unit is composed of, for example, a monitor or the like.

The storage unit has a function of storing information acquired by each unit included in the sandwich-type biometric information measuring device 100. The storage unit is composed of, for example, a non-volatile semiconductor memory such as a flash memory.

Although the mode in which the determination unit (not shown) and the notification unit (not shown) are included in the sandwiching type biological information measuring device 100 has been described, the determination unit (not shown) and the notification unit (not shown) are included in the measuring device main body 200. (Not shown) can also be included.

(Structure of measuring device main body 200)
As shown in FIG. 2, the measuring device main body 200 can be configured to include an optical control unit 11, a measuring unit 12, a control unit 13, a display unit 14, and a storage unit 15.

The light control unit 11 has a wavelength length of the measurement light emitted from the light emitting unit L included in the sandwich type biological information measuring device 100, an irradiation order when a plurality of near-infrared lights having different wavelengths are used, an irradiation time, and the like. It also has a function to control the irradiation interval and the like.

The measuring unit 12 detects the light intensity received by the light receiving unit P included in the sandwiching type biological information measuring device 100, and uses the information based on the detected light intensity as information on oxygen saturation, hemoglobin amount, or blood flow. It has a function of performing arithmetic processing for converting into biological tissue information which is information related to biological tissue X such as.

The control unit 13 has a function of controlling the light source control unit 11 and outputting the biological tissue information obtained by arithmetic processing by the measurement unit 12 to the storage unit 14 and the display unit 15.

The display unit 14 has a function of displaying display information based on the biological tissue information, which is the information regarding the biological tissue X obtained by arithmetic processing by the measurement unit 12, which is output from the control unit 13. The display unit is composed of, for example, a monitor or the like.

The storage unit has a function of storing biological tissue information, which is information about the biological tissue X obtained by arithmetic processing by the measuring unit 12, which is output from the control unit 13. The storage unit is composed of, for example, a non-volatile semiconductor memory such as a flash memory.

The measuring device main body 200 has a configuration including an optical control unit 11, a measuring unit 12, a control unit 13, a display unit 14, and a storage unit 15, as well as a determination unit (not shown) and a notification unit (not shown) shown below. ) Can also be included.

The determination unit monitors the biological tissue information, which is information about the biological tissue X obtained by arithmetic processing in the measurement unit 12, over time, and when the biological tissue information changes, the change in the biological tissue information changes. It has a function of determining whether or not the ratio exceeds a predetermined reference value.

Here, the "predetermined reference value" is, for example, a change in the intensity of light transmitted without being absorbed by the living tissue X (intensity of transmitted light) is monitored over time, and a certain reference value is set for the rate of the change. It can be provided and set as a predetermined reference value.

The notification unit has a function of notifying the outside (for example, a medical worker) when the determination unit determines that the predetermined reference value has been exceeded.

Specifically, as shown in FIG. 1 (b), in a state where the biological tissue X is sandwiched between the first arm 1 and the second arm 2, the biological tissue information which is the information about the biological tissue X is obtained over time. When the determination unit determines that the rate of change in the biological tissue information exceeds a predetermined reference value by monitoring, it can notify the medical staff or the like by using a display means, a voice means, or the like.

[Second Embodiment]
FIG. 3 is a diagram showing a second embodiment of the sandwiched biometric information measuring instrument according to the present invention.
FIG. 3A is a diagram showing a state before sandwiching the biological tissue X, and FIG. 3B is a diagram showing a state in which the biological tissue X is sandwiched.

As shown in FIG. 3, the sandwiching type biometric information measuring instrument 200 according to the second embodiment has at least one region W in which the first arm 1 has a convex shape with respect to the second arm 2. The light emitting portion L and the light receiving portion P are arranged in the convex region W of the 1 arm 1, and the biological tissue X is sandwiched between the first arm 1 and the second arm 2 to provide information on the biological tissue X. It is characterized by measuring information.

In the sandwiching type biometric information measuring instrument 200 according to the second embodiment, the first arm 1 has one region W having a convex shape with respect to the second arm 2, and the first arm 1 has a convex shape. A configuration similar to that of the sandwich-type biometric information measuring instrument 100 according to the first embodiment shown in FIG. 1A, except that a pair of light emitting units L and light receiving units P are arranged in the region W. Have.

It should be noted that a pair or more of the light emitting unit L and the light receiving unit P arranged in the convex region W of the first arm 1 can be arranged.

In the sandwiching type biological information measuring instrument 200 according to the second embodiment, the second arm 2 is not particularly limited as long as it has a shape capable of sandwiching the biological tissue X with the first arm 1, but the figure is shown in FIG. As shown in 3 (a), the curved shape on the opposite first arm 1 side improves the adhesion between the light emitting portion L and the light receiving portion P to the biological tissue X, and is irradiated from the light emitting portion L. It is preferable from the viewpoint of reducing the measurement error due to the measurement light directly entering the light receiving unit P.

In the sandwiching type biometric information measuring instrument 200 according to the second embodiment, the first arm 1 and the second arm 2 facing each other have the shapes shown in FIG. In a state where the biological tissue X is sandwiched between the first arm 1 and the second arm 2 shown, the adhesion between the light emitting portion L and the light receiving portion P to the biological tissue X is further improved as compared with FIG. 1 (b). Can be done.

From this, according to the sandwiching type biological information measuring device 200 of the second embodiment, it is possible to acquire the biological tissue information which is the information regarding the biological tissue X with high reliability.

[Modified example of the second embodiment]
FIG. 4 is a diagram showing a modified example of the second embodiment of the sandwiching type biological information measuring instrument according to the present invention.
FIG. 4A is a diagram showing a state before sandwiching the biological tissue X, and FIG. 4B is a diagram showing a state in which the biological tissue X is sandwiched.

As shown in FIG. 4A, the sandwich-type biological information measuring instrument 200', which is a modification of the second embodiment, is equipped with a member having a pair of light emitting portions L and light receiving portions P as shown in FIG. 4 (a). Similar to the sandwich-type biometric information measuring instrument 200 according to the second embodiment shown in FIG. 3A, except that the 1 arm 1 has one region W having a convex shape with respect to the 2nd arm 2. Has the configuration of.

A member having a pair of light emitting parts L and a light receiving part P may also have a pair or more of a pair of light emitting parts L and a light receiving part P.

In the sandwich-type biometric information measuring instrument 200'which is a modification of the second embodiment, the shape of the first arm 1 before the member having the paired light emitting portion L and the light receiving portion P is mounted is particularly limited. Although it is not removed, for example, it may have a linear shape as shown in FIG. 1 (a) or a curved shape as shown in FIG. 3 (a). May be good

In the sandwich-type biometric information measuring instrument 200'which is a modification of the second embodiment, the first arm 1 and the second arm 2 facing each other have a shape shown in FIG. 4A, whereby FIG. 4 In a state where the biological tissue X is sandwiched between the first arm 1 and the second arm 2 shown in (b), the adhesion between the light emitting portion L and the light receiving portion P to the biological tissue X is determined as in FIG. 3 (b). It can be further improved.

From this, according to the sandwich type biological information measuring device 200'which is a modification of the second embodiment, it is possible to acquire the biological tissue information which is the information regarding the biological tissue X with high reliability.

[Third Embodiment]
FIG. 5 is a diagram showing a third embodiment of the sandwiched biometric information measuring instrument according to the present invention.
FIG. 5A is a diagram showing a state before sandwiching the biological tissue X, and FIG. 5B is a diagram showing a state in which the biological tissue X is sandwiched.

As shown in FIG. 5, in the sandwiching type biometric information measuring instrument 300 according to the third embodiment, the first arm 1 has a plurality of regions W in which the first arm 1 has a convex shape with respect to the second arm 2, and the first arm has a plurality of regions W. A light emitting unit L and a light receiving unit P are arranged in each of the plurality of regions W forming the convex shape of 1, and the living tissue X is sandwiched between the first arm 1 and the second arm 2 to provide information on the living tissue X. It is characterized by measuring biological tissue information.

In the sandwiching type biometric information measuring instrument 300 according to the third embodiment, the first arm 1 has three regions W (W1, W2, W3) in which the first arm 1 has a convex shape with respect to the second arm 2, and the first arm 1 has a convex shape. Except for arranging three pairs (L1, P1) (L2, P2) (L3, P3) of a pair of light emitting parts L and light receiving parts P in each of the three convex regions W of the arm 1. It has the same configuration as the sandwich-type biometric information measuring instrument 200 according to the second embodiment shown in FIG. 3A.

In addition, in FIG. 5, three cases were given as an example having a plurality of convex regions W, but in the sandwiching type biometric information measuring instrument 300 which is the third embodiment, the convex region W is If there are two or more, there is no particular limitation. However, a pair of light emitting unit L and light receiving unit P are arranged in each of the plurality of regions W forming the convex shape of the first arm 1.

In the sandwich-type biometric information measuring instrument 300 according to the third embodiment, the first arm 1 and the second arm 2 facing each other have the shapes shown in FIG. 5 (a), so that FIG. 5 (b) shows. In a state where the biological tissue X is sandwiched between the first arm 1 and the second arm 2 shown, the adhesion between the light emitting portion L and the light receiving portion P to the biological tissue X is further improved as compared with FIG. 1 (b). Can be done.

From this, according to the sandwiching type biological information measuring device 300 which is the third embodiment, it is possible to acquire the biological tissue information which is the information regarding the biological tissue X with high reliability.

[Modified example of the third embodiment]
FIG. 6 is a diagram showing a modified example of the third embodiment of the sandwiching type biological information measuring instrument according to the present invention.
FIG. 6A is a diagram showing a state before sandwiching the biological tissue X, and FIG. 6B is a diagram showing a state in which the biological tissue X is sandwiched.

As shown in FIG. 6A, the sandwich-type biometric information measuring instrument 300', which is a modification of the third embodiment, is equipped with a member having three pairs of light emitting portions L and light receiving portions P as shown in FIG. 6A. With the sandwich-type biometric information measuring instrument 300 according to the third embodiment shown in FIG. 5A, except that the first arm 1 has three regions W having a convex shape with respect to the second arm 2. It has a similar configuration.

In the sandwich-type biological information measuring instrument 300'which is a modification of the third embodiment, the shape of the first arm 1 before the member having the paired light emitting portion L and the light receiving portion P is mounted is particularly limited. Although it is not removed, for example, it may have a linear shape as shown in FIG. 1 (a) or a curved shape as shown in FIG. 5 (a). May be good.

In the sandwich-type biometric information measuring instrument 300'which is a modification of the third embodiment, the first arm 1 and the second arm 2 facing each other have a shape shown in FIG. 6A, whereby FIG. 6 In a state where the biological tissue X is sandwiched between the first arm 1 and the second arm 2 shown in (b), the adhesion between the light emitting portion L and the light receiving portion P to the biological tissue X is determined as in FIG. 5 (b). It can be further improved.

From this, according to the sandwich type biological information measuring device 300'which is a modification of the third embodiment, it is possible to acquire the biological tissue information which is the information regarding the biological tissue X with high reliability.

[Additional notes]
The present invention is not limited to the above-described embodiment, and various modifications can be made within the scope of the claims, and the embodiment obtained by appropriately combining the technical means disclosed in each of the different embodiments. Is also included in the technical scope of the present invention. Furthermore, new technical features can be formed by combining the technical means disclosed in each embodiment.

100 A pinch-type biometric information measuring device according to the first embodiment 200 A pinch-type biometric information measuring device according to a second embodiment 200'A modified example of a second embodiment, a pinching-type biometric information measuring device 300 Hold-type biometric information measuring device 300'which is a modification of the third embodiment Hold-type biometric information measuring device 1 1st arm 2 2nd arm 3 Connecting part 4 Base part 5 Gripping part L Light emitting part P Light receiving part X Living tissue 11 Light source control unit 12 Measurement unit 13 Control unit 14 Storage unit 15 Display unit

Claims (5)

The first arm and the second arm facing each other,
A connecting portion that connects one end of the first arm and one end of the second arm so that the first arm and the second arm can be detached from each other.
An elongated base to be joined to the connecting portion and
A handle portion provided on the side opposite to the connecting portion side of the base portion so that the first arm and the second arm can be separated from each other according to an operation by the operator's grip.
_{Three wavelengths λ 1} (770 nm ± 20 nm), a second wavelength λ ₂ (805 nm ± 20 nm), and a third wavelength λ ₃ (870 nm ± 20 nm) arranged on the first arm toward the living tissue. A light emitting part that irradiates near-infrared light of different wavelengths as measurement light,
A light receiving unit, which is arranged on the first arm and receives the light emitted from the light emitting unit and propagated inside the living tissue.
With
The first arm has a plurality of regions having a curved convex shape with respect to the second arm.
The light emitting portion and the light receiving portion are arranged in each of a plurality of curved and convex regions of the first arm.
Hold-type biological tissue information measurement in which the biological tissue is sandwiched between the first arm and the second arm to measure biological tissue information which is information on oxygen saturation, hemoglobin amount, or blood flow of the biological tissue. vessel. The sandwich-type biological tissue information measuring instrument according to claim 1, wherein the plurality of regions forming the convex shape of the curved shape of the first arm are three. The pinch-type biological tissue information measuring instrument further
It is characterized by including a determination unit that monitors the biological tissue information over time and determines whether or not the rate of change of the biological tissue information exceeds a predetermined reference value when the biological tissue information changes. The sandwiching type biological tissue information measuring device according to claim 1 or 2. The pinch-type biological tissue information measuring instrument further
The sandwich-type biological tissue information measuring device according to claim 3 , further comprising a notification unit that notifies the outside when the determination unit determines that the value exceeds the predetermined reference value. The first arm and the second arm facing each other,
A connecting portion that connects one end of the first arm and one end of the second arm so that the first arm and the second arm can be detached from each other.
An elongated base to be joined to the connecting portion and
A handle portion provided on the side opposite to the connecting portion side of the base portion so that the first arm and the second arm can be separated from each other according to an operation by the operator's grip.
_{Three wavelengths λ 1} (770 nm ± 20 nm), a second wavelength λ ₂ (805 nm ± 20 nm), and a third wavelength λ ₃ (870 nm ± 20 nm) arranged on the first arm toward the living tissue. A light emitting part that irradiates near-infrared light of different wavelengths as measurement light,
A light receiving unit, which is arranged on the first arm and receives the light emitted from the light emitting unit and propagated inside the living tissue.
With
The first arm has a plurality of regions having a curved convex shape with respect to the second arm.
The light emitting portion and the light receiving portion are arranged in each of a plurality of curved and convex regions of the first arm.
Hold-type biological tissue information measurement in which the biological tissue is sandwiched between the first arm and the second arm to measure biological tissue information which is information on oxygen saturation, hemoglobin amount, or blood flow of the biological tissue. It is a pinch-type biological tissue information measurement method performed by the vessel.
A light emitting step, which is arranged on the first arm and emits the measurement light from the light emitting portion toward the living tissue,
A light receiving step in which the light receiving portion is arranged on the first arm and the measurement light emitted from the light emitting portion receives the light propagating inside the living tissue.
A method for measuring a sandwiched biological tissue information, which comprises a measurement step of measuring the biological tissue information about the biological tissue sandwiched between the first arm and the second arm.

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