JP2005245624A - Probe holder and optical living body measuring apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a probe holder capable of easily holding a probe brought into contact with a living body in a short time, and an optical living body measuring apparatus. <P>SOLUTION: The probe holder 5 is provided with a holder substrate 21 mounted on a subject and a socket 22 for attaching the probes 2 and 3 to the holder substrate 21. The socket 22 has: a socket body 28 provided with a male thread part 34 on an outer peripheral surface, into which the probe head 7 of the probes 2 and 3 is inserted; a fixing nut 29 fitted onto the male thread part 34 for fixing the socket body 28 to the holder substrate 21; a holding member 39 mounted on the socket body 28 and provided with a plurality of clamping pawls 36 for clamping the probe head 7; and a cap 31 provided with a female thread part 39 screw-fitted with the male thread part 34 on an inner peripheral surface for tightening the holding member 30 to the socket body 28 so that the respective clamping pawls 36 hold the probe head 7. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a probe holder and an optical biometric apparatus used when optically measuring the inside of a living body.

  In recent years, brain function measurement, sensory measurement, and the like by near infrared spectroscopy have been actively performed. This measurement method irradiates a living body with light such as near infrared light, detects the intensity of light transmitted through the living body, and obtains in-vivo information from the detection result.

As a device for optically measuring the inside of such a living body, for example, an optical measuring device described in Patent Document 1 is known. In the optical measurement device described in this document, an optical fiber cover is attached to the tip of each of the irradiation optical fiber and the detection optical fiber, and each optical fiber cover is fixed to the optical fiber holding portion arranged on the surface of the subject. In this state, the subject is irradiated with light from the irradiation optical fiber.
JP 2002-143169 A

  However, the above-described conventional technique has the following problems because it has a structure in which the optical fiber cover is fixed to the optical fiber holding part by screwing the optical fiber cover with a fixing screw from the side surface of the optical fiber holding part. That is, in the multi-point measurement as in the prior art described above, since a plurality of optical fiber holding portions are in a dense state, a space for turning the fixing screw is narrowed, and screwing with the fixing screw becomes difficult. For this reason, since the time required to hold the irradiation optical fiber and the detection optical fiber (probe) brought into contact with the measurement site of the living body becomes long, it becomes a great stress for the person to be measured. Such stress on the measurement subject affects the measurement result.

  An object of the present invention is to provide a probe holder and an optical biological measurement apparatus that can easily and quickly hold a probe that is brought into contact with a living body.

  The present invention relates to a probe holder for holding a probe that is brought into contact with a measurement site of a living body when optically measuring the inside of the living body. The probe holder is provided on the holder substrate and the holder substrate. The socket has a male screw portion on the outer peripheral surface, the socket main body into which the probe is inserted, a holding member that is disposed on the socket main body and holds the probe, and a male screw And a cap for tightening the holding member against the socket body so that the holding member holds the probe.

  When optically measuring the inside of a living body using such a probe holder, a probe that is brought into contact with a measurement site of the living body is attached to the holder substrate in the following manner while the holder substrate is mounted on the living body. That is, first, the cap is fitted into the male thread portion of the socket body so that the cap of the socket covers the holding member. At this time, the cap is previously loosened with respect to the socket body. Subsequently, in that state, the probe is inserted into the socket body. Then, in a state where the position of the probe tip with respect to the living body is adjusted, the cap is rotated, and the holding member is fastened to the socket body so that the holding member holds the probe. In this way, the probe can be attached to the holder substrate simply by inserting the probe into the socket body and turning the cap to tighten the socket body. This eliminates the need for a large space for attaching the probe to the side of the socket. For example, even when a plurality of sockets are densely arranged on the holder substrate to perform multipoint measurement, the probe Can be held easily and in a short time.

  Preferably, the inner peripheral surface of the socket body has a tapered portion formed so as to expand toward the distal end side of the socket body, and the holding member has a grip portion for gripping the probe. A tapered surface that engages with the tapered portion is provided. In such a configuration, when the holding member is tightened with respect to the socket main body by the cap, the gripping part moves toward the center axis side of the socket main body along the taper part of the socket main body, so that the gripping part sufficiently adheres to the probe. It becomes like this. Thereby, a probe is reliably hold | maintained by a holding part. In addition, since the gripping force of the gripping part is directed toward the central axis side of the socket body by the tapered portion formed in the socket body, the gripping force necessary for gripping the probe can be generated with a small twisting force at the fingertip. it can.

  In this case, preferably, the gripping portion has a plurality of gripping claws that have a tapered surface and grip the probe. As a result, even when the gripping part is made of a material that has less elasticity and a smaller friction coefficient than rubber (for example, a polyacetal-based material), the gripping force can be generated with a small twisting force at the fingertip. it can.

  The holding member may be an O-ring. In such a configuration, when the holding member is tightened with respect to the socket body by the cap, the O-ring is crushed so that the O-ring swells to the center axis side, so that the O-ring is sufficiently adhered to the probe. It becomes like this. Thereby, the probe is securely held by the O-ring.

  Preferably, the holder substrate has a through hole for allowing the socket body to pass therethrough, and the socket is fitted to the male screw portion, and further includes a nut for fixing the socket body through the through hole to the holder substrate. Have. By adopting such a configuration, it is possible to easily fix the socket body to the holder substrate even when the holder substrate and the socket body are manufactured separately from the viewpoint of ease of making the probe holder and the manufacturing cost. Can do.

  In this case, preferably, the through hole has a slit shape. In such a configuration, when a plurality of sockets are provided on the holder substrate, the distance between the two probes can be easily adjusted by shifting the position of the socket body along the slit-shaped through hole.

  Further preferably, a scraping member is attached to the inner peripheral surface of the socket main body and extends to the proximal end side of the socket main body, and scrapes the body hair of the living body when the probe is inserted into the socket main body. In measurement of the inside of a living body using light, body hair such as hair absorbs light, which may hinder measurement. For this reason, it is necessary to bring the probe into contact with the living body so that the background of the living body can be seen as much as possible. However, the method of scraping the body hair using a thin stick such as an earpick takes considerable time. Therefore, by providing the above-described scraping member, the body hair of the living body is scraped by the scraping member at the same time as the probe is inserted into the socket body. As a result, it is possible to easily scrape body hair without taking time and effort.

  The present invention also includes a light irradiation probe and a light detection probe that are brought into contact with a measurement site of a living body, and a probe holder for holding the light irradiation probe and the light detection probe. In the optical biometric apparatus for measuring, the probe holder includes a holder substrate attached to the living body, and a plurality of sockets provided on the holder substrate for attaching the light irradiation probe and the light detection probe to the holder substrate. The socket has a male screw portion on the outer peripheral surface, a socket main body into which the probe is inserted, a holding member that is disposed on the socket main body and holds the probe, and a female screw portion that is screwed into the male screw portion. And a cap for fastening the holding member to the socket body so that the holding member holds the probe. .

  When optically measuring the inside of a living body with such an optical biometric measuring device, the probe for light irradiation and the probe for detecting light that are brought into contact with the measurement site of the living body with the holder substrate of the probe holder attached to the living body are as follows: It attaches to a holder board | substrate as follows. That is, first, for each socket of the probe holder, the cap is fitted into the male screw portion of the socket body so that the cap covers the holding member. At this time, the cap is previously loosened with respect to the socket body. Subsequently, in that state, the probe is inserted into the socket body. Then, in a state where the position of the probe tip with respect to the living body is adjusted, the cap is rotated, and the holding member is fastened to the socket body so that the holding member holds the probe. In this way, the probe can be attached to the holder substrate simply by inserting the probe into the socket body and turning the cap to tighten the socket body. This eliminates the need for a large space for attaching the probe to the side of the socket, so that even when multiple sockets are densely arranged on the holder substrate, the probe can be easily and quickly held. can do.

  ADVANTAGE OF THE INVENTION According to this invention, when measuring the inside of a biological body optically, the probe made to contact the measurement site | part of a biological body can be hold | maintained easily and for a short time. Thereby, it is possible to reduce the stress applied to the measurement subject.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of a probe holder and an optical biological measurement apparatus according to the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a block diagram showing an embodiment of an optical biometric apparatus according to the present invention. The optical biometric apparatus 1 of the present embodiment irradiates near-infrared light onto a measurement target (here, the head) of a human body, and detects the intensity of light transmitted through the head, thereby allowing oxygenated hemoglobin and Concentration information such as deoxygenated hemoglobin is measured.

  In FIG. 1, an optical biological measurement apparatus 1 includes a light irradiation probe 2 for irradiating light to a measurement target and a plurality of (here, four) light detections for detecting light propagated in the measurement target. Probe 3, an apparatus body 4 connected to these probes 2 and 3, and a probe holder 5 for holding the probes 2 and 3 at a measurement site to be measured.

  The probes 2 and 3 have an optical fiber 6 and a probe head 7 that covers a predetermined portion on the distal end side of the optical fiber 6. The probe head 7 has a cylindrical shape. As shown in FIG. 2, the optical fiber 6 has, for example, a fiber bundle structure in which a plurality of optical fibers are bundled, and is covered with a pipe 8. The tip of the optical fiber 6 (probes 2 and 3) protrudes from the probe head 7, and the tip of the optical fiber 6 is brought into contact with the measurement site to be measured at the time of optical measurement.

  As shown in FIG. 2, a spring 9 is provided in the probe head 7 to urge the optical fiber 6 against its distal end side with an appropriate force. Thereby, when the optical fiber 6 is brought into contact with the measurement object, the tip of the optical fiber 6 is brought into close contact with the measurement object by the spring 9, so that favorable measurement conditions can be obtained. In addition, even when the measurement object moves in a state where the optical fiber 6 is in contact with the measurement object, an excessive force is applied to the distal ends of the probes 2 and 3 and the measurement object due to the presence of the spring 9. Can be prevented.

  The light irradiation probe 2 and the light detection probe 3 are connected to the apparatus main body 4 via the optical connector 10. The apparatus main body 4 includes a light emitting element 11 and a driver 12 that drives the light emitting element 11. The light generated by the light emitting element 11 enters the optical fiber 6 of the light irradiation probe 2.

  In addition, the apparatus main body 4 includes a plurality of light receiving elements 13 that receive light emitted from the optical fibers 6 of the respective light detection probes 3, a plurality of amplifiers 14 that amplify output electric signals of the respective light receiving elements 13, A sample hold circuit 15 for simultaneously holding the output signals of the amplifiers 14 and an A / D conversion circuit 16 for converting the output signals of the sample hold circuit 15 into digital signals are provided.

  Further, the apparatus main body unit 4 includes a CPU 17, a display unit 18, and a data output unit 19. The A / D conversion circuit 16, the CPU 17, the display unit 18, and the data output unit 19 are connected to each other via the data bus D. The CPU 17 calculates density information in the measurement target based on the function of sending a control signal for driving the light emitting element 11 to the driver 12 and the output signal (photodetection signal) of the A / D conversion circuit 16. A function of sending the calculation result to the display unit 18 and the data output unit 19 is provided. The display unit 18 displays the calculation result related to the density information sent from the CPU 17. The data output unit 19 sends out the calculation result related to the density information sent from the CPU 17 to the outside of the optical biometric device 1.

  FIG. 3 is a sectional view showing an embodiment of the probe holder 5 according to the present invention. In the figure, a probe holder 5 includes a holder substrate 21 mounted on a subject (head) 20, and a plurality of sockets 22 for attaching the light irradiation probe 2 and the light detection probe 3 to the holder substrate 21. I have.

  The holder substrate 21 includes a plate 23 formed of a plastic resin, a shape memory metal, and the like, and a cushion sheet 24 having a cushioning property, which is attached to the back surface of the plate 23 (the surface in contact with the subject 20). It has become. The buffer sheet 24 softens the contact with the holder substrate 21 and improves the adhesion when the holder substrate 21 is attached to the subject 20, and is made of a material such as rubber or gel. Moreover, it is preferable that the buffer sheet 24 has a light shielding property using, for example, a black colored material.

  As shown in FIG. 4, through holes 25 and 26 for fixing the socket 22 to the holder substrate 21 are formed in the holder substrate 21. The through hole 25 is for the socket 22 for attaching the light irradiation probe 2 to the holder substrate 21. The through hole 26 is for the socket 22 for attaching the light detection probe 3 to the holder substrate 21, and a plurality of through holes 26 are formed around the through hole 25. The through hole 25 has a circular shape, and each through hole 26 preferably has a slit shape. Two attachment belts 27 for fixing the holder substrate 21 to the subject 20 (see FIG. 3) are attached to both ends of the holder substrate 21.

  As shown in FIGS. 5 and 6, the socket 22 includes four parts such as a socket body 28, a fixing nut 29, a holding member 30, and a cap 31. The socket 22 is formed of a resin such as polyacetal resin (trade name: Duracon, Delrin). In this case, it is preferable to shade the resin in black.

  The socket body 28 is a member having a cylindrical shape that penetrates the through hole 25 or the through hole 26 of the holder substrate 21, and a flange portion 32 is provided at one end of the socket body 28. In the socket body 28, the probe heads 7 of the probes 2 and 3 are inserted. A taper portion 33 is formed on the inner peripheral surface of the socket main body 28 at the front end portion of the socket main body 28 (the end opposite to the flange portion 32) so as to expand toward the front end side of the socket main body 28. A male screw portion 34 is formed on the outer peripheral surface of the socket body 28 from the tip of the socket body 28 to the vicinity of the flange portion 32.

  Such a socket body 28 is fixed to the holder substrate 21 by a fixing nut 29. Specifically, the socket body 28 is inserted into the through hole 25 or the through hole 26 from the back surface side (the buffer sheet 24 side) of the holder substrate 21, and in that state, the fixing nut is inserted from the front surface side (the plate 23 side) of the holder substrate 21. 29 is fitted to the male thread portion 34 of the socket body 28 and the fixing nut 29 is tightened (rotated) with respect to the socket body 28, thereby pressing the holder substrate 21 against the flange portion 32 of the socket body 28.

  The holding member 30 is placed on the socket body 28. The holding member 30 has an annular portion 35 through which the probe head 7 of the probes 2 and 3 is inserted, and a grip portion 36 that is integrated with the annular portion 35 and grips the probe head 7. The gripping part 36 is a plurality (four) gripping claws formed by making a plurality of (here, four) cuts 36a (see FIG. 7). Each gripping claw 36 is provided with a tapered surface 37 that engages with the tapered portion 33 of the socket body 28.

  The holding member 30 is preferably made of a material having a high elastic modulus, excellent elastic recovery, creep resistance, and fatigue resistance. As such a material, an elastic body (spring material) such as a flexible plastic is preferably used, and in particular, in addition to the above characteristics, polyacetal and acetal resin, which are excellent in friction and wear characteristics and long-time sliding characteristics, are particularly preferable. preferable.

  The cap 31 is a member for fastening the holding member 30 to the socket body 28 so that each gripping claw 36 of the holding member 30 holds the probe head 7 and has a cylindrical shape. The cap 31 is provided with a holding receiving surface 38 for receiving the annular portion 35 of the holding member 30 when holding the probe head 7. Further, a female screw portion 39 that is screwed with the male screw portion 34 of the socket body 28 is formed on the inner peripheral surface of the cap 31.

  Further, a scraping member 40 for scraping hair when the probe head 7 is inserted into the socket body 28 is attached to the inner peripheral surface of the socket body 28. The scraping member 40 is made of a thin plate made of a soft resin material such as rubber or urethane. The scraping member 40 extends to the proximal end side (flange portion 32 side) of the socket body 28, and the distal end portion extends from the proximal end of the socket body 28. As shown in FIG. 8 (a), the thin plate constituting the scraping member 40 may have a petal shape in which the cuts 41 enter a radial shape, or the cuts 41 are spiraled as shown in FIG. 8 (b). The shape may be in a shape. In any configuration, the number of cuts 41 is not particularly limited.

  When the probe head 7 is inserted into the socket main body 28 from the upper side (tapered portion 33 side) of the socket main body 28, the scraping member 40 is pushed and spreads toward the inner peripheral surface of the socket main body 28. At this time, the scraping member 40 is preferably attached to the distal end side (probe head 7 insertion side) of the socket body 28 rather than the proximal end side of the socket body 28. In this case, when the probe head 7 is inserted to the proximal end of the socket main body 28, the scraping stroke of the distal end portion of the scraping member 40 can be increased.

  Next, a procedure for mounting the light irradiation probe 2 and the light detection probe 3 on the head to be measured using such a probe holder 5 will be described with reference to FIG.

  Here, the socket body 28 of the socket 22 is fixed to the holder substrate 21 by a fixing nut 29 in advance. Further, the cap 31 is placed from above so as to cover the holding member 30 placed on the socket main body 28 and is fitted to the male screw portion 34 of the socket main body 28. At this time, the cap 31 is previously loosened so that it can be tightened with respect to the socket body 28.

  In FIG. 9, first, the holder substrate 21 is mounted on the measurement target by the mounting belt 27 so that the back surface of the holder substrate 21 is in close contact with the measurement target (step 101).

  Subsequently, the probe heads 7 of the probes 2 and 3 are inserted into the corresponding sockets 22 (step 102). The probe head 7 is inserted into the socket body 28 with the cap 31 and the holding member 30 being inserted. At this time, since the scraping member 40 attached to the socket main body 28 is pushed and spread by the probe head 7, the hair of the head is scraped by the scraping member 40 so that the background of the head can be seen. For this reason, since it becomes possible to contact the probes 2 and 3 directly to the ground, it is possible to prevent the concentration measurement by light from being hindered.

  Subsequently, the probe head 7 is held by tightening (turning) the cap 31 against the socket body 28 while slightly pressing the probe head 7 so that the tips of the probes 2 and 3 are in close contact with the background of the head. (Step 103). As the cap 31 is rotated, the upper end of the holding member 30 comes into contact with the holding receiving surface 38 of the cap 31. When the cap 31 is further rotated, the holding member 30 is tightened with respect to the socket body 28, so that each gripping claw 36 of the holding member 30 is elastically deformed along the taper portion 33 of the socket body 28, and the probe head 7 side pressed. Thereby, as shown in FIG. 6, each gripping claw 36 comes into close contact with the probe head 7, and the probe head 7 is held and fixed by each gripping claw 36. At this time, since the grip portion 36 is composed of a plurality of grip claws, the taper surface 37 of each grip claw 36 slides while constricting the taper portion 33 of the socket body 28 with a small twisting force of the fingertip, and the grip force Or a wedge effect can be created.

  As described above, in the probe holder 5 of the present embodiment, after the probe head 7 is inserted into the socket 22, the cap 31 of the socket 22 is turned and tightened with respect to the socket body 28, whereby the holding member 30. Since the probe head 7 is held by the gripping claws 36, there is no need to be subjected to a large space restriction as in the case where the probe head 7 is screwed from the side. For this reason, even when the space between the probe heads 7 (sockets 22) is narrow, the probe head 7 can be held easily and in a short time.

  Further, when the probe head 7 is inserted into the socket 22, the hair is scraped by the tip of the scraping member 40, so that the hair is scraped compared to the case where the hair is scraped using a thin bar-like object such as an earpick. Can be saved.

  As a result, the total time for mounting the probe head 7 to the measurement object is shortened as a result, so that it is possible to reduce the stress applied to the measurement subject. Therefore, it is possible to prevent a great influence on the measurement result.

  Moreover, in actual optical measurement, it may be necessary to change the distance between the light irradiation probe 2 and the light detection probe 3, but the through hole 26 of the holder substrate 21 has a slit shape. By shifting the position of the socket 22 along the through hole 26, the distance between the probes 2 and 3 can be easily adjusted. Therefore, it is not necessary to replace the holder substrate every time the distance between the probes 2 and 3 is changed.

  Further, each gripping claw 36 of the holding member 30 is configured to elastically deform and hold the probe head 7. When the holding of the probe head 7 is released, each gripping claw 36 returns to its original state. For this reason, the same holding member 30 can be used many times.

  A modification of the holding member 30 is shown in FIG. In the same figure, the holding member 30A has a gripping portion 36A instead of the gripping portion 36 described above. The gripping portion 36A has an annular structure in which no cut is formed (there is no gripping claw). A tapered surface 37A that engages with the tapered portion 33 of the socket body 28 is formed on the grip portion 36A. The gripping part 36A is formed of an elastic body such as silicone rubber, fluorine rubber, neoprene rubber, urethane rubber or the like. The gripping part 36A may be formed integrally with the annular part 35 or may be divided.

  If the material of the gripping portion 36A is made of polyacetal resin or the like like the annular portion 35, a force to compress and deform the tapered surface 37A of the gripping portion 36A is required. It is impossible to handle with the twisting force. Further, since the gripping portion 36A that has been deformed once to create a gripping force cannot be easily opened, it is difficult to reuse the holding member 30A.

  However, since the gripping portion 36A is formed of an elastic body, the gripping force necessary for gripping the probe 7 can be generated with a small twisting force at the fingertip even if there is no notch as in the holding member 30 described above. . Further, the same holding member 30A can be used many times. Furthermore, since the gripping portion 36A is provided with the tapered surface 37A, the gripping force is concentrated only on the inner side, so that the gripping effect and airtightness of the probe 7 are improved.

  FIG. 11 is an exploded sectional view showing a part of another embodiment of the probe holder according to the present invention, and FIG. 12 is a sectional view showing a state in which the probe is held by the probe holder. In the drawing, the same reference numerals are given to the same or equivalent members as those of the above-described embodiment, and the description thereof is omitted.

  In each figure, the probe holder 50 of the present embodiment includes a socket 51 instead of the socket 22 in the above-described embodiment. The socket 51 is made up of five parts such as a socket body 52, the fixing nut 29, the O-ring 53, the O-ring pressing member 54, and the cap 31.

  The socket body 52 has substantially the same structure as the socket body 28 except that the taper portion 33 of the socket body 28 in the above-described embodiment is not provided, and has a flange portion 32, a male screw portion 34, and a scraping member 40. Yes. The O-ring 53 is a member for holding the probe head 7 of the probes 2 and 3, and is arranged so as to be sandwiched between the socket main body 52 and the cylindrical O-ring pressing member 54. The O-ring 53 is formed of an elastic body such as silicone rubber, fluorine rubber, neoprene rubber, urethane rubber or the like. The O-ring 53 is preferably shaded black.

  In such a socket 51, the cap 31 is fitted to the male thread portion 34 of the socket body 52 so as to cover the O-ring 53 and the O-ring pressing member 54. In this state, when the probe head 7 is inserted into the socket 51 and the cap 31 is tightened (turned) with respect to the socket body 52, the O-ring pressing member 54 comes into contact with the holding receiving surface 38 of the cap 31. The socket body 52 is tightened. For this reason, when the O-ring 53 is crushed in the axial direction, the O-ring 53 expands in the radial direction. As a result, the O-ring 53 comes into close contact with the probe head 7, and the probe head 7 is held and fixed by the O-ring 53.

  Therefore, also in this embodiment, the probe head 7 can be held easily and in a short time, so that the total time for mounting the probe head 7 on the measurement object is shortened. Thereby, it is possible to reduce the stress applied to the measurement subject. Further, since the probe head 7 is held by the O-ring 53, it is effective when the inside of the socket 51 needs to be hermetically sealed.

  The present invention is not limited to the above embodiment. For example, in the probe holder of the above embodiment, the socket body of the socket is fixed to the holder substrate 21 with a fixing nut, but the socket body may be integrally formed with the holder substrate 21.

  The number of the light irradiation probes 2 and the light detection probes 3 attached to one holder substrate 21 is not limited to the above embodiment, and can be variously modified.

It is a block diagram which shows one Embodiment of the optical biological measurement apparatus concerning this invention. It is sectional drawing of the front-end | tip part of the probe for light irradiation shown in FIG. 1, and the probe for light detection. It is sectional drawing which shows the state by which the probe for light irradiation and the probe for light detection were hold | maintained at one Embodiment of the probe holder concerning this invention. It is a top view of the probe holder shown in FIG. FIG. 4 is an exploded cross-sectional view of the socket shown in FIG. 3. FIG. 6 is a cross-sectional view illustrating a state in which the probe head is fixed to the socket illustrated in FIG. 5. It is a perspective view of the holding member shown in FIG. FIG. 6 is a rear view of the socket body shown in FIG. 5. It is a flowchart which shows the procedure which mounts | wears a measuring object with the probe for light irradiation and the probe for light detection using the probe holder shown in FIG. It is a perspective view which shows the modification of the holding member shown in FIG. It is a disassembled sectional view which shows the socket of other embodiment of the probe holder concerning this invention. It is sectional drawing which shows the state by which the probe head was fixed to the socket shown in FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Optical biological measuring device, 2 ... Light irradiation probe, 3 ... Light detection probe, 5 ... Probe holder, 7 ... Probe head, 20 ... Subject (living body), 21 ... Holder board | substrate, 22 ... Socket, 25 ... Through hole, 26 ... Through hole, 28 ... Socket body, 29 ... Fixing nut, 30 ... Holding member, 30A ... Holding member, 31 ... Cap, 33 ... Tapered part, 34 ... Male screw part, 36 ... Holding claw (Grip Part), 36A ... gripping part, 37 ... taper surface, 37A ... taper surface, 39 ... female screw part, 40 ... scraping member, 50 ... probe holder, 51 ... socket, 52 ... socket body, 53 ... O-ring (holding member) ).

Claims (8)

In a probe holder for holding a probe to be brought into contact with the measurement site of the living body when optically measuring the inside of the living body,
A holder substrate attached to the living body;
A socket provided on the holder substrate, for attaching the probe to the holder substrate;
The socket is
A socket main body having a male screw portion on the outer peripheral surface, and the probe is inserted;
A holding member disposed on the socket body for holding the probe;
A female screw part that engages with the male screw part is provided on an inner peripheral surface, and a cap for fastening the holding member to the socket body so that the holding member holds the probe. A probe holder. The inner peripheral surface of the socket body has a tapered portion formed so as to expand with respect to the distal end side of the socket body,
The probe holder according to claim 1, wherein the holding member has a grip portion for gripping the probe, and the grip portion is provided with a tapered surface that engages with the taper portion.   The probe holder according to claim 2, wherein the gripping portion has a plurality of gripping claws that have the tapered surface and grip the probe.   The probe holder according to claim 1, wherein the holding member is an O-ring. The holder substrate has a through hole for penetrating the socket body,
The said socket is further fitted with the said external thread part, and further has a nut for fixing the said socket main body which penetrated the said through-hole to the said holder board | substrate. Probe holder.   The probe holder according to claim 5, wherein the through hole has a slit shape.   The inner peripheral surface of the socket body is attached with a scraping member that extends to the proximal end side of the socket body and scrapes the body hair of the living body when the probe is inserted into the socket body. The probe holder according to any one of claims 1 to 6. Light that comprises a light irradiation probe and a light detection probe brought into contact with a measurement site of a living body, and a probe holder for holding the light irradiation probe and the light detection probe, and that measures light inside the living body In a biological measurement device,
The probe holder includes a holder substrate mounted on the living body, and a plurality of sockets provided on the holder substrate for attaching the light irradiation probe and the light detection probe to the holder substrate,
The socket has a male screw portion on an outer peripheral surface, a socket main body into which the probe is inserted, a holding member that is disposed on the socket main body and holds the probe, and is screwed into the male screw portion. And a cap for tightening the holding member against the socket body so that the holding member holds the probe.

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