WO2010073913A1

WO2010073913A1 - Probe for measuring living body information

Info

Publication number: WO2010073913A1
Application number: PCT/JP2009/070652
Authority: WO
Inventors: 正晴金沢; 謙治蛤; 公一寺内; 一成水口; 澄今井; 典浩舘田
Original assignee: コニカミノルタセンシング株式会社
Priority date: 2008-12-26
Filing date: 2009-12-10
Publication date: 2010-07-01

Abstract

A probe (A) for measuring living body information, the probe (A) being provided with housings (1, 2) disposed on the nail side and the ball side of a finger, and also with holding sections (11, 21) disposed to the housings (1, 2) and making contact with the finger. The holding sections (11, 21) have a shape capable of holding the finger with the finger bent at a joint.

Description

Probe for measuring biological information

The present invention is used for measurement of biological information such as blood oxygen saturation and pulse, and relates to a probe attached to a finger.

It is possible to objectively observe the state of the subject's body by measuring blood oxygen saturation, pulse rate, and the like. There are photoelectric pulse wave measuring devices such as a photoelectric pulse wave meter and a pulse oximeter equipped with a probe attached to a finger to measure the blood oxygen saturation and pulse. For example, the pulse oximeter irradiates light from the probe attached to the finger of the subject and measures the transmitted or reflected light to determine blood oxygen saturation.

Since the photoelectric pulse wave measuring device does not need to collect blood when measuring blood oxygen saturation and / or pulse, there is very little invasion to the body of the subject. This facilitates long-term continuous use and is used to monitor the condition of the patient during surgery. Recently, the device has been miniaturized so that it does not get in the way even when worn for a long time, and blood oxygen saturation can be measured continuously for a long time. It is also used for measurement of oxygen saturation (measured continuously for about 8 hours or more), sports training, and the like.

A conventional probe to be attached to a finger will be described. FIG. 9 is a perspective view of a conventional probe attached to a finger, and FIG. 10 is a cross-sectional view of the probe shown in FIG. 9 attached to a finger. As shown in FIG. 9, the probe E is attached to the tip of a finger. The probe E is connected to a measuring device (not shown) via a cable Ca. Note that the probe E shown in FIG. 9 measures light transmitted through the finger.

The probe E connects the upper housing 91 disposed on the upper side (nail side) of the finger, the lower housing 92 disposed on the lower side (abdominal side) of the finger, and the upper housing 91 and the lower housing 92. And a hinge portion 93. Further, the upper housing 91 is provided with a light shielding portion 94 for shielding external light from the side portions of the fingers (portions not on the nail side and the abdominal side) when the probe E is attached to the fingers. The light-shielding portion 94 completely covers the gap between the upper housing 91 and the lower housing 92 when the probe E is attached to a finger, and here is a light-shielding rubber formed along the finger. . Since the probe E needs to be firmly attached to the fingers, an elastic member (elastic spring) 95 that biases the upper housing 91, the lower housing 92, and the fingers in the direction sandwiching the fingers is provided in the vicinity of the hinge portion 93. Yes.

The upper housing 91 is provided with an upper hold member 911 that contacts the fingernail side. The lower housing 92 is provided with a lower hold member 921 that comes into contact with the belly side of the finger. As shown in FIG. 10, the upper hold member 911 includes an LED light source 912 that is a light emitting unit that emits light of a predetermined wavelength to the finger, and when the lower hold member 921 is disposed in contact with the finger, A light receiving unit 922 for receiving light transmitted through the finger is provided at a position facing the LED light source 912 across the finger. As shown in FIG. 10, the finger to which the probe E is attached is fixed with the joint extended (see, for example, JP-A-7-236625, JP-A-11-188019, etc.).

In the probe E, the light emitted from the LED light source 912 is transmitted through the finger, and the transmitted light is detected by the light receiving unit 922. The light receiving unit 922 converts the detected light into a signal, and the signal is sent to the measurement device via the cable Ca. The measuring device analyzes the transmitted signal to detect blood oxygen saturation, pulse, and the like.

Even if the subject moves his hand or the probe E is pulled in order to accurately measure blood oxygen saturation, pulse rate, etc., using a photoelectric pulse wave measuring device equipped with the probe E It is necessary to prevent the positional relationship among the LED light source 912, the light receiving unit 922, and the fingers from being shifted. For this reason, the probe E holds the finger of the examinee strongly so that the positional relationship among the LED light source 912, the light receiving unit 922, and the finger does not shift.

Japanese Patent Laid-Open No. 7-236625 Japanese Patent Laid-Open No. 11-188019

As described above, the finger equipped with the probe E is fixed with the joint extended. In general, the finger is naturally bent in a weak state (unconstrained state). The state in which the joint generated by mounting the probe E is extended is a state in which an unnatural force is applied to the finger. Even in such an unnatural state where the joint is extended, pain and discomfort are small if the joint is short.

However, when the probe E is worn over a long period of time, such as measurement of the condition of a subject during surgery, measurement for observation of sleep apnea syndrome, etc., the finger is stretched firmly for a long time. Therefore, the uncomfortable feeling and pain that the subject feels on the fingers increases.

Accordingly, the present invention is a probe that can accurately measure the state of the body such as blood oxygen saturation and pulse, and can reduce discomfort and pain felt by the subject's fingers when worn for a long time. The purpose is to provide.

In order to achieve the above object, the present invention is a probe for measuring biological information, comprising a housing and a holding unit that is disposed in the housing and holds the fingernail side and the abdomen side of a finger. At least one of the fingernail side or the abdomen side has a shape that can hold the finger with the joint bent.

According to this configuration, since the finger is kept bent when the probe is attached, it is possible to reduce the sense of incongruity and pain felt by the finger compared to a conventional probe that stretches and holds the finger. is there.

Also, since the fingers are maintained in a natural state (bent state), it is difficult for the subject to feel stress on the fingers, and the fingers can be prevented from bending and stretching in order to remove the stress during measurement. Thereby, the positional relationship between the light source unit or the light receiving unit arranged on the probe and the finger is hardly changed, and it is possible to measure biological information stably and accurately.

In the above configuration, at least one of the fingernail side and the abdomen side of the hold part may be an integrally molded body bent at a portion facing the joint of the finger. According to this structure, since the shape is simple, manufacture is easy. In addition, by using a soft resin such as a foamed resin such as foamed urethane or a gel-like resin for the portion that comes into contact with the fingers, it is possible to reduce discomfort and pain felt by the fingers.

In the above-described configuration, at least one of the fingernail side and the abdomen side of the hold part is a connection part formed at a part facing the joint of the finger and includes a plurality of holding parts that are flexibly connected. May be.

At this time, the holding part provided with the connecting part may be an integrally formed body formed so that the connecting part is thinner than other parts of the holding part, and the holding part provided with the connecting part. The portion may be formed so that the holding portions adjacent to each other at the connecting portion can be separated from each other.

In the above configuration, at least one of the holding portions may be fixed to the housing, and the connecting portion may include a biasing member that biases the holding portion that is not fixed toward the finger.

At this time, the urging member may include a protruding portion protruding from the housing that pushes the non-fixed holding portion.

In addition, the biasing member may include an elastic member attached beyond the connecting portion on the opposite side to the finger of the holding portion.

Further, at least one of the nail side and the abdomen side of the finger of the hold part has a cross-sectional shape including a side part where the opposite side opposite to the finger turns to the side part of the finger, and the biasing member May be attached to a side portion of the non-fixed holding portion, and may be provided with an elastically expandable member connected to the holding portion of the holding portion facing the non-fixed holding portion.

Further, at least one of the nail side and the abdomen side of the finger of the hold part has a cross-sectional shape including a side part where the opposite side to the finger is turned to the side part of the finger, and the biasing member May be provided with an elastic member attached to the side part and arranged to pull the finger side of the unfixed holding part. In addition, at least a part of the housing may be formed so as to share at least a part of the hold part.

According to the present invention, it is possible to accurately measure the state of the body such as blood oxygen saturation and pulse, and to reduce the sense of discomfort and pain felt by the subject when worn for a long time. Can be provided.

It is a perspective view of the probe concerning the present invention. It is sectional drawing of the state which attached the probe shown in FIG. 1 to fingers. FIG. 3 is a cross-sectional view of the probe shown in FIG. 2 cut along line XX. It is sectional drawing of the state with which the other example of the probe concerning this invention was mounted | worn with the finger. It is sectional drawing of the state with which the other example of the probe concerning this invention was mounted | worn with the finger. It is sectional drawing of the state with which the other example of the probe concerning this invention was mounted | worn with the finger. It is a side view in the state where other examples of the probe concerning the present invention were equipped to fingers. It is a perspective view of an example of the upper side hold part used for the probe concerning the present invention. It is a perspective view in the state where a conventional probe was attached to a finger. FIG. 10 is a cross-sectional view showing a state where the probe shown in FIG. 9 is attached to a finger.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of a probe according to the present invention, FIG. 2 is a cross-sectional view of the probe shown in FIG. 1 attached to a finger, and FIG. 3 is a cross-sectional view of the probe shown in FIG. It is sectional drawing. Incidentally, the probe A shown in FIG. 1 and the like is attached to a finger like the conventional one shown in FIG. The probe A shown in FIG. 1 is connected to the measuring device by a cable Ca. The probe shown in FIG. 1 is a probe for a pulse oximeter that is attached to the finger of a subject and measures blood oxygen saturation (SpO2) and pulse.

As shown in FIGS. 1 and 2, the probe A includes an upper housing 1 disposed on the fingernail side, a lower housing 2 disposed on the finger abdomen, an upper housing 1 and a lower housing 2. A hinge part 3 to be connected and a light shielding part 4 that is attached to the upper housing 1 and covers the side part of the finger when the probe A is attached to the finger.

The upper housing 1 is provided with an upper holding part 11 that comes into contact with the fingernail side. The lower housing 2 includes a lower holding portion 21 that comes into contact with the abdomen of the finger. The upper hold unit 11 and the lower hold unit 21 are members that press a finger. The upper hold portion 11 or the lower hold portion 21 is preferably in close contact with the fingers, and one formed of a material that deforms according to the fingers, such as urethane foam resin or gel resin, can be employed. .

The upper hold member 11 has a light emitting unit 12 that can emit light of a wavelength necessary for measurement (about 660 nm: red light, about 815 nm: two different wavelengths of infrared light) in the case of a pulse oximeter. Is provided. Although LED is used as the light emission part 12, it is not limited to it, It is possible to employ | adopt widely the light source which can radiate | emit the light of a predetermined wavelength. The lower hold unit 21 includes a light receiving unit 22 that receives light emitted from the light emitting unit 12 and transmitted through the finger and converts the light into an electrical signal. Here, a silicon photodiode (SPD) is adopted as the light receiving unit 22, but the present invention is not limited to this, and light emitted from the light emitting unit 12 and transmitted through the finger can be converted into an electrical signal. Devices that can be used can be widely adopted.

The hinge portion 3 includes an upper protruding portion 31 protruding integrally from the upper housing 1, a lower protruding portion 32 protruding integrally from the lower housing 2, and a through hole formed in the upper protruding portion 31. And a connecting shaft 33 that passes through the through hole formed in the lower protrusion 32. The upper housing 1 and the lower housing 2 are connected so as to be rotatable about a connecting shaft 33.

The elastic member 5 is fitted on the connecting shaft 33 of the hinge portion 3. The elastic member 5 pushes the upper housing 1 and the lower housing 2 so that the upper housing 1 and the lower housing 2 sandwich the fingers. Here, the elastic member 5 uses an elastic spring formed in a coil shape. However, the elastic member 5 is not limited to this, and a force in the direction of sandwiching fingers is applied to the upper housing 1 and the lower housing 2. It can be widely adopted.

Note that the hinge portion is not limited to the one that rotates about the shaft, and the upper housing and the lower housing can be moved in a movable state, such as a structure in which the upper housing and the lower housing come close to and away from each other by sliding. What can be connected can be widely adopted. Furthermore, in this embodiment, when the hinge part 3 is mounted on a finger, the one disposed on the tip side of the finger is used. However, the present invention is not limited thereto, and is formed on the side part of the finger. It may be.

The light-shielding portion 4 covers the gap between the upper housing 1 and the lower housing 2 when the probe A is attached to a finger, and is made of rubber having a light-shielding property here. Also, the upper housing 1 and the lower housing 2 are formed so as to overlap each other and block light, or the upper hold unit 11 and the lower hold unit 21 overlap each other to block light. In the case of the light shielding portion, the light shielding portion may be omitted.

The upper and lower hold units, which are the main parts of the present invention, will be described. As shown in FIG. 2, the upper holding unit 11 includes a first upper holding unit 111 that holds the tip side from the DIP joint (distal interphalangeal joint: so-called first joint) of the fingers, the DIP joint of the fingers, and the PIP. And a second upper holding portion 112 that holds a portion between the joint (proximal interphalangeal joint: so-called second joint). The first upper holding part 111 and the second upper holding part 112 are formed in a shape refracted in the bending direction of the finger at the bending part 110. In addition, the light emission part 12 is attached to the 1st upper side holding | maintenance part 111, and the light radiate | emitted from the light emission part 12 is irradiated to the part of a fingernail.

The lower holding unit 21 includes a first lower holding unit 211 that holds the distal end side of the finger DIP joint, and a second lower holding unit 212 that holds a portion between the finger DIP joint and the PIP joint. And. The first lower holding portion 211 and the second lower holding portion 212 are formed in a shape refracted in the bending direction of the finger at the bending portion 210. The light receiving unit 22 is attached to the first lower holding unit 211.

As shown in FIG. 2, when the probe A is attached to a finger, the first upper holding part 111 and the first lower holding part 211 are respectively connected to the second upper holding part 112 and the second lower holding part 212. , Oppose across your fingers. In this state, the upper housing 1 and the lower housing 2 of the probe A are biased in the direction of sandwiching the fingers by the elastic force of the elastic member 5, and the upper and

lower hold portions

11 and 21 hold the fingers. The light emitting unit 12 attached to the first upper holding unit 111 and the light receiving unit 22 attached to the first lower holding unit 211 are opposed to each other with fingers interposed therebetween.

As shown in FIG. 3, the cross-sectional shapes of the first upper holding portion 111 and the first lower holding portion 211 are formed in a curved shape that follows the roundness of the fingers. The first upper holding part 111 and the second lower holding part 211 are in close contact with fingers by being formed in a curved shape in this way. As a result, the first upper holding part 111 and the second lower holding part 211 can firmly hold the distal end portion of the finger relative to the DIP joint. In the probe A shown in FIG. 3, the first upper holding part 111 and the first lower holding part 211 are both formed in a curved shape, but the present invention is not limited to this. Any one of the first upper holding part 111 and the first lower holding part 211 may be formed in a curved surface shape.

Similarly, even if at least one of the second upper holding part 112 and the second lower holding part 212 is formed in a curved shape, the second upper holding part 112 and the second lower holding part 212 are in close contact with each other, The probe A can hold the fingers more firmly.

Since the upper hold part 11 and the lower hold part 21 are formed by being refracted in the bending direction of the finger, the finger (here, the DIP joint) to which the probe A is attached is maintained in an appropriately bent state. . Thereby, even if the probe A is worn for a long time, the burden on the finger is less than that of a conventional probe that is held in a state where the finger is forcibly stretched, and the sense of discomfort and pain felt by the finger can be reduced. .

Another example of the probe according to the present invention will be described with reference to the drawings. FIG. 4 is a cross-sectional view of a state in which another example of the probe according to the present invention is mounted on a finger. The probe A2 shown in FIG. 4 includes a third upper holding portion 113 on the upper side of the finger of the second upper holding portion 112 in the upper holding portion 11. The third upper holding portion 113 is in contact with a portion between the PIP joint on the fingernail side and the MP joint (inter-mandibular interphalangeal joint). The second upper holding part 112 and the third upper holding part 113 are formed in a shape bent in the bending direction of the fingers.

Further, as shown in FIG. 4, the lower holding unit 21 includes a third lower holding unit 213 on the finger base side of the second lower holding unit 212. The third lower holding portion 213 comes into contact with a portion between the PIP joint on the ventral side of the finger and the MP joint. The second lower holding part 212 and the third lower holding part 213 are formed in a shape refracted in the bending direction of the finger.

Since the probe A2 shown in FIG. 4 holds the DIP joint and the PIP joint of the fingers with the upper hold portion 11 and the lower hold portion 21, it is possible to suppress the deviation in the length direction of the fingers and the direction intersecting the length direction. It is done. Moreover, since the upper side hold part 11 and the lower side hold part 21 are bent, a finger | toe is bent appropriately and it is hard to apply an excessive force. Thereby, even if the probe A2 is worn for a long time, it is possible to reduce the sense of incongruity and pain felt by the fingers.

Other examples of the probe according to the present invention will be described with reference to the drawings. FIG. 5 is a cross-sectional view of a further example of the probe according to the present invention mounted on a finger. The probe B shown in FIG. 5 has the same configuration as the probe A except that the upper housing 6 and the lower housing 7 are different, and substantially the same parts are denoted by the same reference numerals. Also, description of substantially the same parts as the probe A will be omitted. As shown in FIG. 5, in the probe B, an upper hold portion 61 is disposed in the upper housing 6, and a lower hold portion 71 is disposed in the lower housing 7.

The upper holding part 61 includes a first upper holding part 611 that comes into contact with the tip side of the DIP joint on the fingernail side, and a second upper holding part 612 that comes into contact with a part between the DIP joint and the PIP joint. ing. Further, the urging member 63 is provided in the connecting portion 610 between the first upper holding portion 611 and the second upper holding portion 612. The first upper holding part 611 is supported by the upper housing 6, and the second upper holding part 612 is connected to the first upper holding part 611 via the biasing member 63. The second upper holding portion 612 is supported by the urging member 63 so as to be swingable around the connecting portion 610 with the first upper holding portion 611.

The contact portions of the first upper holding portion 611 and the second upper holding portion 612 with the fingers are formed with flexibility so as to be in close contact with the fingers. As what has a softness | flexibility, foamable resins, such as foaming urethane, a gel-like resin, etc. can be mentioned. Further, only one of the first upper holding part 611 and the second upper holding part 612 may be formed of a flexible material. Further, the entire first upper holding portion 611 and / or the second upper holding portion 612 may be formed of a flexible material, or only the portion that contacts the fingers may be formed of a flexible material. Good.

The urging member 63 is disposed on the opposite side to the side of the upper holding unit 61 that contacts the finger, and does not contact the finger. The biasing member 63 is a member having elasticity, and biases the second upper holding portion 612 in the direction in which the finger is pressed.

In addition, the lower holding portion 71 is a first lower holding portion 711 that comes into contact with a portion on the tip side of the DIP joint on the ventral side of the finger, and a second lower side that comes into contact with a portion between the DIP joint and the PIP joint. Holding part 712. In addition, a urging member 73 is provided at the connecting portion 710 between the first lower holding portion 711 and the second lower holding portion 712. The first lower holding portion 711 is supported by the lower housing 7, and the second lower holding portion 712 is connected to the first lower holding portion 711 via a biasing member 73. The second lower holding portion 712 is supported by the urging member 73 so as to be swingable around a connecting portion 710 with the first lower holding portion 711.

Since the contact portions of the first lower holding portion 711 and the second lower holding portion 712 with the fingers are in close contact with the fingers, they are formed with flexibility. As what has a softness | flexibility, foamable resins, such as foaming urethane, a gel-like resin, etc. can be mentioned. Further, only one of the first lower holding part 711 and the second lower holding part 712 may be formed of a flexible material. Further, the entire first lower holding portion 711 and / or the second lower holding portion 712 may be formed of a flexible material, and only the portion that contacts the fingers is formed of a flexible material. May be.

The urging member 73 is disposed on the opposite side to the side of the lower hold portion 71 that contacts the finger, and does not contact the finger. The urging member 73 is a member having elasticity, and urges the second lower holding portion 712 in the direction in which the finger is pressed.

The first upper holding part 611 is supported by the upper housing 6, and the first lower holding part 711 is supported by the lower housing 7. The upper housing 6 and the lower housing 7 are urged by the elastic member 5 in a direction in which the fingers are sandwiched, and the distal end portion of the fingers relative to the DIP joint is placed on the first upper holding portion 611 and the first lower holding portion 711. It is pinched. A connecting portion 610 between the first upper holding portion 611 and the second upper holding portion 612 is disposed in the vicinity of the DIP joint on the fingernail side. A connecting portion 710 between the first lower holding portion 711 and the second lower holding portion 712 is also arranged in the vicinity of the DIP joint on the ventral side of the finger.

The second upper holding portion 612 is connected to the first upper holding portion 611 via a biasing member 63, and is biased by the biasing member 63, and is a portion between the DIP joint and the PIP joint on the fingernail side. Close contact with. The second lower holding portion 712 is connected to the first lower holding portion 711 via a biasing member 73 and is biased by the biasing member 73 so that the DIP joint and the PIP joint on the abdomen side of the finger. Close contact with the part between.

As described above, the second upper holding portion 612 and the second lower holding portion 712 can swing around the connecting

portions

610 and 710, respectively, and even if the DIP joint of the finger is bent and extended in the probe B, the second The upper holding portion 612 and / or the second lower holding portion 712 swings in accordance with the movement of the finger within a swingable range, and maintains a state of being in close contact with the finger. Thereby, even if a finger moves in the state where probe B was attached, it can control that probe B shifts. In addition, the probe B is less constrained to the finger joints even though it is firmly attached to the fingers. As described above, the probe B is not easily displaced from the finger even when worn for a long time, can perform accurate measurement, and can reduce discomfort and pain felt by the subject.

In the above-described embodiment, both the upper hold portion and the lower hold portion have a swingable structure. However, the present invention is not limited to this, and only one of them can be bent and the other is the probe A. It is also possible to use a hold part having the same refracted shape as in FIG. In the above-described embodiment, an example in which the connecting

portions

610 and 710 are provided at positions close to the DIP joint of the finger is described as an example, but the present invention is not limited to this, and in addition to these, the PIP joint and It is good also as what has a connection part in the position which adjoins. Alternatively, the connecting portion may be formed only at one of the proximity portions of the DIP joint or the PIP joint, and the other vicinity may be a bent holding portion as shown by the probe A2.

Another example of the probe according to the present invention will be described with reference to the drawings. FIG. 6 is a cross-sectional view of a state in which another example of the probe according to the present invention is attached to a finger. The probe C shown in FIG. 6 has the same configuration as the probe B except that the upper housing 6c and the lower housing 7c are different, and substantially the same parts are denoted by the same reference numerals. Note that a detailed description of substantially the same parts as the probe B is omitted.

As shown in FIG. 6, the upper housing 6c of the probe C includes an upper hold portion 61c. The upper holding part 61c has a first upper holding part 611c that comes into contact with a part closer to the tip than the DIP joint on the fingernail side, a second upper holding part 612c that comes into contact with a part between the DIP joint and the PIP joint, A connecting portion 610c that connects the first upper holding portion 611c and the second upper holding portion 612c is provided. The first upper holding portion 611c, the second upper holding portion 612c, and the connecting portion 610c are integrally formed.

The connecting portion 610c is formed thinner than the first upper holding portion 611c and the second upper holding portion 612c, and the upper holding portion 61c can be bent at the connecting portion 610c. The connecting portion 610c is shown to be thinner than the other portions, but is not limited to this, and the upper holding portion 61c can be bent in the bending and extending directions of the fingers. As described above, the one that can connect the first upper holding portion 611c and the second upper holding portion 612c can be widely adopted.

As shown in FIG. 6, in the probe C, the first upper holding portion 611c of the upper holding portion 61c is fixed to the upper housing 6c, and the second upper holding portion 612c is swingable via the connecting portion 610c. 1 It is connected to the upper holding part 611c. The portion of the upper housing 6c that contacts when the second upper holding portion 612c swings is provided with a biasing member 63c that biases the second upper holding portion 612c downward. The urging member 63c is a convex portion formed integrally with the upper housing 6c.

The lower holding portion 71c includes a first lower holding portion 711c that comes into contact with the tip side of the DIP joint on the ventral side of the finger, and a second lower holding portion that comes into contact with a portion between the DIP joint and the PIP joint. 712c, and a connecting portion 710c that connects the first lower holding portion 711c and the second lower holding portion 712c. The first lower holding portion 711c, the second lower holding portion 712c, and the connecting portion 710c are integrally formed.

The connecting portion 710c is formed thinner than the first lower holding portion 711c and the second lower holding portion 712c, and the lower holding portion 71c can be bent at the connecting portion 710c. In addition, although what is formed thinly as the connection part 710c compared with another part is shown, it is not limited to it, The lower side holding part 71c can be bent in the bending direction of a finger. As described above, the one that can connect the first lower holding portion 711c and the second lower holding portion 712c can be widely adopted.

The lower holding portion 71c has a first lower holding portion 711c fixed to the lower housing 7c, and a second lower holding portion 712c swingable to the first lower holding portion 711c via a connecting portion 710c. It is connected. The portion of the lower housing 7c that contacts when the second lower holding portion 712c swings is provided with a biasing member 73c that biases the second lower holding portion 712c upward. The biasing member 73c is a convex portion formed integrally with the lower housing 7c.

In the probe C, when the first upper holding portion 611c and the first lower holding portion 711c hold the portion on the tip side from the DIP joint of the finger, the second upper holding portion 611c is pushed by the biasing member 63c. Then, it is brought into close contact with the portion between the DIP joint and the PIP joint on the fingernail side and pressed. Further, the second lower holding portion 712 is pushed by the biasing member 73c, and is brought into close contact with and pressed against a portion between the DIP joint and the PIP joint on the abdomen of the finger.

Since the upper hold portion 61c and the lower hold portion 71c can be bent by the connecting portion 610c and the connecting portion 710c, the second upper holding portion 612c and the second lower holding portion 712c are brought into close contact with the bending of the fingers. be able to. Thereby, since the probe C holds the finger firmly in a state of being bent naturally, it is difficult to be displaced even when the probe C is worn for a long time, and it is possible to reduce a sense of incongruity and pain felt by the subject. In addition, it is possible to accurately measure body information such as blood oxygen saturation and pulse over a long period of time because it is difficult to shift. Further, when the upper hold portion 61c and the lower hold portion 71c have elasticity, they are pushed and elastically deformed by the biasing

members

63c and 73c. As a result, the pressure applied to the fingers from the upper hold portion 61c and the lower hold portion 71c can be adjusted, so that the probe C is mounted with the fingers tightened appropriately.

In the above-described embodiment, the urging

members

63c and 73c are convex portions formed integrally with the upper housing 6c and the lower housing 7c, but are not limited thereto, and are raised in a planar shape. Alternatively, the shape may be a ridgeline shape. Further, the urging

members

63c and 73c formed separately may not be integrated with the housing. As described above, in the case of separately attaching, it is possible to adjust the force with which the second upper holding portion 612c and / or the second lower holding portion 712c is pressed against the finger. Further, it may be elastically deformed, and the second upper holding part 612c and / or the second lower holding part 712c may be pushed by the elastic force.

Still another example of the probe according to the present invention will be described with reference to the drawings. FIG. 7 is a side view showing a state in which another example of the probe according to the present invention is mounted on a finger. The probe D shown in FIG. 7 is the same as the probe C except that it includes a connection belt 614d connected to the upper hold portion 61c and the lower hold portion 71c and does not include the urging

members

63c and 73c. The substantially same parts are denoted by the same reference numerals. Detailed descriptions of substantially the same parts are omitted. In addition, illustration of the light-shielding part 4 is abbreviate | omitted for convenience of explanation.

As shown in FIG. 7, the probe D includes a connecting belt 614d fixed to a second upper holding portion 612c and a second lower holding portion 712c on the side when attached to the finger. The connecting belt 614d is a belt that elastically expands and contracts. One end of the connecting belt 614d is attached to the side of the second upper holding part 612c, and the other end is attached to the side of the second lower holding part 712c. By providing the connection belt 614d, the second upper holding portion 612c and the second lower holding portion 712c are always urged in the direction of sandwiching fingers. Further, since the connecting belt 614d has elasticity, the interval between the second upper holding part 612c and the second lower holding part 712c is easy to open, and fingers can be easily put in and out.

Note that at least one end of the connecting belt 614d may be detachably attached to the second upper holding part 612c or the second lower holding part 712c. Examples of the attaching / detaching method include an attaching / detaching method using a hook and an attaching / detaching method using a surface fastener. Moreover, it is not limited to these, It is possible to employ | adopt widely what the connection belt 614d does not remove | deviate from the 2nd upper side holding | maintenance part 612c and / or the 2nd lower side holding | maintenance part 712c in the attachment state.

The connecting belt 614d is formed so that at least one end is detachable. After attaching the probe D to the finger, the probe D can be easily attached by attaching / detaching the end of the connecting belt 614d.

Other examples of the probe according to the present invention will be described with reference to the drawings. FIG. 8 is a perspective view of an example of the upper hold portion used in the probe according to the present invention. As shown in FIG. 8, the upper hold unit 14 includes a first upper holding unit 141 and a second upper holding unit 142. The first upper holding part 141 and the second upper holding part 142 are formed as separate bodies, and the first upper holding part 141 is fixed to the upper housing 1.

The first upper holding portion 141 and the second upper holding portion 142 have a cross-sectional shape that is curved along the fingers, like the first upper holding portion 111 and the first lower holding portion 121 shown in FIG. . The first upper holding portion 141 and the second upper holding portion 142 are also bent in the same direction as the finger side on the surface opposite to the finger side. That is, the first upper holding portion 141 and the second upper holding portion 142 are formed in a concave shape (not shown) that holds the fingers on the inner surfaces and covers a part of the side portions of the fingers.

The first upper holding portion 141 and the second upper holding portion 142 are connected by a biasing member 143 attached to the opposite side of the finger. The biasing member 143 elastically expands and contracts. The urging member 143 includes a first urging member 1431 disposed on the upper surface side of the upper hold portion 14 and second urging members 1432 disposed on both sides. The first urging member 1431 connects the upper surface side of the first upper holding part 141 and the second upper holding part 142, and the first upper holding part 141 and the second upper holding part 142 are bent in the bending direction of the fingers. Is possible. As for the upper side holding part 14, the 1st upper side holding part 141 is being fixed to the upper housing 1, and the 2nd upper side holding part 142 rock | fluctuates in the bending direction of a finger.

Further, the side portion of the second upper holding portion 142 and the both side portions of the first upper holding portion 141 are connected by the second urging member 1432. The second upper holding portion 142 is connected to the first upper holding portion 141 while being bent toward the finger side. When the second upper holding part 142 moves to the opposite side (upper side in the figure) of the finger, it is pulled by the second urging member 1432 fixed to both sides and pulled back in the direction of the finger (lower side in the figure). It is.

The second upper holding portion 142 is biased by the biasing member 143 so as to be in close contact with the DIP joint and the PIP joint of the finger. Thereby, it is possible to hold the finger firmly in a state in which the finger is naturally bent, and it is difficult to slip even when worn for a long time, and it is possible to reduce a sense of incongruity and pain felt by the finger. In addition, it is possible to accurately measure body information such as blood oxygen saturation and pulse over a long period of time because it is difficult to shift. In the present embodiment, the upper hold unit has been described, but the lower hold unit may have the same configuration.

In the above-described embodiment, a pair of the upper housing disposed on the fingernail side of the finger and the lower housing disposed on the belly side of the finger is described as a housing, but the present invention is not limited thereto. Stabilize the holding part, such as a cylindrical shape that covers at least a part of the finger, or a U-shaped cross-section that connects the parts placed on the fingernail side and the abdomen side (integrated and separate) Thus, it is possible to widely adopt a housing having a structure that can be held in a fixed manner. Similarly, in the above-described embodiment, the hold unit in which the upper hold unit and the lower hold unit are paired is described. However, the present invention is not limited thereto, and the fingers are held with the joint bent. It is possible to widely adopt a structure that can be used.

Moreover, in the above-mentioned embodiment, although the housing (upper housing, lower housing) and the holding part (upper holding part, lower holding part) are formed separately, the present invention is limited thereto. However, a structure in which a part (or all) of the housing also serves as a part (or all) of the holding portion can be employed.

The description of the above embodiment is for explaining the present invention, and should not be construed as limiting the invention described in the claims or reducing the scope thereof. It is needless to say that each part configuration of the present invention is not limited to the above embodiment, and various modifications can be made within the technical scope described in the claims.

The probe according to the present invention can be used as a measurement probe of a photoelectric pulse wave measuring device that is attached to a finger and continuously measures a pulse and blood oxygen saturation for a long time.

A to D Probe 1 Upper housing 11 Upper hold part 111 First upper holding part 112 Second upper holding part 12 Light emitting part 2 Lower housing 21 Lower hold part 211 First lower holding part 212 Second lower holding part 22 Light receiving unit 3 Hinge unit 4 Light blocking unit 5 Elastic member 6 Upper housing 61 Upper hold unit 610 Connecting unit 611 First upper holding unit 612 Second upper holding unit 7 Lower housing 71 Lower hold unit 710 Connecting unit 711 First lower side Holding part 712 Second lower holding part

Claims

A housing;
A probe that is disposed in the housing and includes a hold unit that holds the fingernail side and the abdomen side of the finger, and measures biological information,
A probe for measuring biological information, characterized in that at least one of the fingernail side or the abdomen side of the holding part has a shape capable of holding the finger in a state where the joint is bent.
2. The biological information measuring probe according to claim 1, wherein at least one of the fingernail side or the abdomen side of the hold part is an integrally molded body bent at a part facing the joint of the finger.
The at least one of the fingernail side or the abdomen side of the hold part includes a plurality of holding parts that are flexibly connected at a connection part formed at a part facing the joint of the finger. The biological information measuring probe according to claim.
4. The biological information measuring probe according to claim 3, wherein the holding portion including the connecting portion is an integrally formed body formed so that the connecting portion is thinner than other portions of the hold portion.
The biological information measuring probe according to claim 3, wherein the holding portion including the connecting portion is formed such that adjacent holding portions sandwiching the connecting portion can be separated from each other.
At least one of the holding portions is fixed to the housing;
The biological information measuring probe according to claim 3, wherein the connecting portion includes a biasing member that biases a non-fixed holding portion toward a finger.
The biological information measuring probe according to claim 6, wherein the biasing member is a protruding portion protruding from the housing.
The biological information measuring probe according to claim 6, wherein the urging member includes an elastic member that is attached to the opposite side of the holding portion from the finger and beyond the connecting portion.
At least one of the nail side or the abdomen side of the finger of the hold part has a cross-sectional shape provided with a side part where the opposite side of the finger faces the side of the finger,
The biasing member is attached to a side portion of the non-fixed holding portion, and includes an elastically expandable member connected to the holding portion of the hold portion facing the non-fixed holding portion. The biological information measuring probe according to claim 6.
At least one of the nail side or the abdomen side of the finger of the hold part has a cross-sectional shape provided with a side part where the opposite side of the finger faces the side of the finger,
The biological information measurement probe according to claim 6, wherein the biasing member is attached to the side portion and includes an elastic member arranged to pull the unfixed holding portion toward the finger side.
2. The biological information measuring probe according to claim 1, wherein at least a part of the housing also serves as at least a part of the hold part.