JP6675629B1 - Fingertip capillary blood flow observation microscope - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily position a microscope on a portion of a test subject's fingertip where blood flow of capillaries is to be observed, to suppress blurring of a finger at the time of observation, and to easily focus the fingertip of the microscope. A fingertip capillary blood flow observation microscope capable of observing blood flow in capillaries. A fingertip capillary blood flow observing microscope includes a first pinching member 20 and a second pinching member 30, which are rotatable around a pivot shaft 10, and a pinching portion 21 and a second pinching portion of the first pinching member 20. The finger accommodating portions 41 and 42 provided on the inner surfaces of the sandwiching portion 31 of the member 30 facing each other, and the focusing attached to the second sandwiching member 30 so that the tip end faces the sandwiching portion 21 of the first sandwiching member 20. A microscope main body 60 having a function and a cuticle stopper 70 provided on the inner surface of the holding portion 31 of the second holding member 30. The microscope main body in a state in which the tip of the cuticle stopper 70 is caught by the cuticle of the fingernail. The optical axis of 60 is configured to fit the nail root portion adjacent to the cuticle of the fingernail. [Selection diagram] Fig. 1

Description

  The present invention relates to a fingertip capillary blood flow observation microscope, and is particularly suitable for use in observing blood flow in capillaries at the fingertips of a hand.

  2. Description of the Related Art Conventionally, a digital microscope for observing blood flow is known as a device for observing blood flow in a capillary such as a fingertip of a hand, and is commercially available (see Non-Patent Document 1). This digital microscope for blood flow observation is a combination of a microscope (microscope) and a monitor (display). The method of observing the blood flow in the capillary at the fingertip of the hand using this digital microscope for blood flow observation is as follows. That is, first, the ring finger opposite to the dominant hand is placed on the finger rest provided on the observation table immediately below the microscope. Oil for preventing irregular reflection is applied to the ring finger in advance. A U-shaped groove is formed in the finger rest according to the shape of the finger. Then, with the finger placed on the finger rest, the tip of the microscope is moved right and left and back and forth, and the subject's finger is moved while approaching the surface of the finger nail just behind the cuticle. Then, while looking at the monitor, the position and focus are adjusted by moving the focus adjusting screw attached to the lens barrel of the microscope and the finger of the subject so that an image of the capillaries just below the skin appears.

[Search on March 1, 2019], Internet <URL: http://www.gokocamera.com/ev/bscan-z.php>

  In the digital microscope for blood flow observation described in Non-Patent Document 1, the blood flow can be clearly observed in the nail epidermis within a few millimeters from the cuticle of the nail. It is important to align However, since there is a large difference between individuals in finger size and nail size, and only placing a finger on a finger rest at the time of observation, it is difficult to perform only initial positioning and focusing. In addition, the finger of the observation target moves up, down, left, and right because the body is shaken by breathing during the observation, so it is necessary to perform positioning and focusing each time, so that the blood flow of the capillary blood vessels is clearly observed. For this purpose, the operation required skill.

  Therefore, the problem to be solved by the present invention is that the microscope can be easily positioned at the site where the blood flow of the capillary at the fingertip of the subject's hand is to be observed, and the blurring of the finger during the observation is suppressed. It is an object of the present invention to provide a fingertip capillary blood flow observation microscope capable of easily observing the blood flow of the fingertip capillaries simply by adjusting the focus of the microscope.

In order to solve the above problems, the present invention provides
A first holding member and a second holding member configured to be rotatable about a rotation axis and to be able to be restored to an initial position;
Between the holding portion of the first holding member and the holding portion of the second holding member, provided on inner surfaces of the holding portion of the first holding member and the holding portion of the second holding member facing each other. When inserting a finger for observing the blood flow of the capillary at the fingertip of the subject's hand from a direction perpendicular to the rotation axis, insert the finger in a direction perpendicular to the finger and in a direction parallel to the rotation axis. A finger storage unit that is housed in a restrained state,
A microscope main body having a focusing function attached to the second holding member such that a tip end faces the holding portion of the first holding member;
When the finger is clamped between the clamping portion of the first clamping member and the clamping portion of the second clamping member provided on the inner surface of the clamping portion of the second clamping member, A cuticle stopper that prevents the finger from moving forward in the longitudinal direction with respect to the first holding member and the second holding member by being hooked on the cuticle of the nail;
Fingertip capillary blood flow configured such that the optical axis of the microscope main body is aligned with the nail base adjacent to the cuticle of the finger nail in a state where the tip of the cuticle stopper is hooked on the cuticle of the finger nail. It is an observation microscope.

  In the fingertip capillary blood flow observation microscope, the end (operation portion) of the first holding member opposite to the holding portion and the end (operation portion) of the second holding member opposite to the holding portion are manually moved. The first holding member and the second holding member are rotated about a rotation axis by applying a force by pinching with the fingers of the fingers to separate the holding portion of the first holding member and the holding portion of the second holding member from each other, In this state, after inserting the finger of the subject's hand for observing the blood flow of the capillary of the fingertip into the finger accommodating portions of the holding portion of the first holding member and the holding portion of the second holding member, the first holding is performed. Stop applying force to the end (operation portion) of the member opposite to the holding portion and the end (operation portion) of the second holding member opposite to the holding portion, and stop the first holding member and the second holding member. The holding portion of the first holding member in a state where the finger is housed in the finger housing portion by rotating the member around the rotation axis in the opposite direction. Clamping the finger between the clip portions of the second clamping member. In this way, by slightly moving the finger forward while holding the finger between the holding portion of the first holding member and the holding portion of the second holding member, the cuticle of the fingernail is hooked on the tip of the cuticle stopper. In this state, the microscope main body is focused, and the blood flow in the capillary at the fingertip is observed.

  The finger holding portions of the holding portion of the first holding member and the holding portion of the second holding member are generally provided on the inner surface of the holding portion of the first holding member so as to extend in a direction perpendicular to the rotation axis. In addition, the first concave portion for accommodating the lower half of the finger and the second concave portion for accommodating the upper half of the finger provided on the inner surface of the holding portion of the second holding member so as to extend in a direction perpendicular to the rotation axis. However, the present invention is not limited to this. The cross-sectional shape, cross-sectional dimension, and length of the finger housing are generally the same as at least the entire distal phalanx, typically the distal phalanx, of the finger whose capillary blood flow is to be observed in the finger housing. In addition to the whole bone, it is possible to accommodate the entire middle phalanx or a part of the distal phalanx side, and to restrain this finger in a direction perpendicular to the finger and parallel to the rotation axis. Selected. Since the finger is accommodated in the finger accommodating portion and the finger is clamped between the clamping portion of the first clamping member and the clamping portion of the second clamping member, the finger is rotated in a direction parallel to the rotation axis. It can also be constrained in a direction perpendicular to the axis of motion. In this way, since the movement of the finger during the observation can be suppressed, the microscope can be easily focused on the epidermis of the nail base in the vicinity of the cuticle of the nail, whereby the blood flow of the capillary can be easily observed.

  The cuticle stopper accommodates the finger of the subject's hand in the finger accommodating portion, and interposes the fingernail at right angles to the finger in a state where the finger is clamped between the clamping portion of the first clamping member and the clamping portion of the second clamping member. The position and direction are determined so as to cross the direction. When the finger is slightly moved forward in this state, the cuticle stopper is caught by the cuticle, and at this point, the finger is prevented from moving forward in the longitudinal direction with respect to the first holding member and the second holding member. At this time, by predetermining the distance between the tip of the cuticle stopper and the optical axis of the microscope main body, the microscope main body can be positioned directly above the epidermis of the nail base near the cuticle of the nail. That is, in a state where the tip of the cuticle stopper is hooked on the cuticle, the optical axis of the microscope main body is adapted to the nail base of the fingernail adjacent to the cuticle. For this reason, the blood flow of the capillary can be observed by focusing the microscope on the epidermis of the nail root near the cuticle. The distance between the tip of the cuticle stopper and the optical axis of the microscope main body is, for example, 1.0 mm or more and 2.0 mm or less.

  The focusing of the microscope main body may be performed manually or may be performed automatically. The microscope main body is attached to the second holding member such that the distal end faces the holding portion of the first holding member. Specifically, for example, the microscope body is attached through the holding portion of the second holding member, or It is attached so as to be embedded in a surface of the holding portion of the second holding member facing the holding portion of the first holding member. The microscope main body has an imaging optical system including an objective lens provided on the side facing the holding portion of the first holding member. The microscope body may be similar to the barrel of a general optical microscope having an objective lens and an eyepiece, but preferably, the objective lens is attached to one end face of the fiber bundle and the other A fiberscope provided with an image sensor on the end face is used. The microscope body may be similar to a camera such as a smartphone or a tablet terminal. The illumination optical system may be provided integrally with the microscope main body or may be provided separately from the microscope main body as long as it can illuminate the lower part of the objective lens, and is selected as necessary. When the illumination optical system is provided integrally with the microscope main body, for example, a plurality of light emitting diodes are provided so as to surround the objective lens around the optical axis of the microscope main body. In particular, when the microscope main body is a fiberscope, an image formed by the objective lens of the microscope main body is taken by the image pickup device, and the image acquired by the image pickup device is connected to a cable connected to an output end of the image pickup device. The image can be sent to an external display or a display of a smartphone via the MFP and displayed.

  According to the present invention, the end of the first holding member opposite to the holding portion and the end of the second holding member opposite to the holding portion are pinched by the fingers of the hand to apply the first holding force. The member and the second holding member are rotated about a rotation axis to separate the holding portion of the first holding member and the holding portion of the second holding member from each other. After inserting a finger whose blood flow is to be observed into the finger holding portions of the holding portion of the first holding member and the holding portion of the second holding member, an end opposite to the holding portion of the first holding member; (2) Stop applying a force to the holding portion and the opposite end of the holding member, and rotate the first holding member and the second holding member in the opposite directions around the rotation axis, so that The finger is held between the holding portion of the first holding member and the holding portion of the second holding member in a state where the finger is accommodated, and a cuticle stopper is further provided. By hooking the tip on the cuticle of the fingernail, the finger can be restrained in the direction parallel to and perpendicular to the rotation axis, so that the movement of the finger during observation can be suppressed. By aligning the focus of the objective lens with the epidermis at the base of the nail near the cuticle of the fingernail, the capillary at the fingertip can be clearly observed.

It is a perspective view showing a fingertip capillary blood flow observation microscope by a 1st embodiment. FIG. 2 is a plan view showing a fingertip capillary blood flow observation microscope according to the first embodiment. It is a front view showing a fingertip capillary blood flow observation microscope according to the first embodiment. It is a right view which shows the fingertip capillary blood flow observation microscope by 1st Embodiment. FIG. 5 is a schematic diagram illustrating an inner surface of a holding portion of a second holding member included in the fingertip capillary blood flow observation microscope according to the first embodiment. FIG. 3 is a schematic diagram illustrating a part where a capillary blood flow at a fingertip is observed with a fingertip capillary blood flow observation microscope according to the first embodiment. It is a perspective view showing the state where a finger was inserted at the time of observation with a fingertip capillary blood flow observation microscope according to the first embodiment. It is a right view which shows the state which inserted the finger at the time of observation with the finger-tip capillary blood flow observation microscope by 1st Embodiment. FIG. 4 is a schematic diagram of a fingertip viewed from the back of a finger housing in a state where a finger is inserted at the time of observation with a fingertip capillary blood flow observation microscope according to the first embodiment. A schematic line showing that the cuticle stopper provided on the inner surface of the holding portion of the second holding member constituting the fingertip capillary blood flow observation microscope according to the first embodiment is located near the cuticle at the tip of the finger. FIG. It is a perspective view showing a fingertip capillary blood flow observation microscope by a 2nd embodiment. It is a top view showing a fingertip capillary blood flow observation microscope by a 2nd embodiment. It is a front view showing a fingertip capillary blood flow observation microscope by a 2nd embodiment.

  Hereinafter, embodiments for carrying out the invention (hereinafter, referred to as “embodiments”) will be described.

<First Embodiment>
[Fingertip capillary blood flow observation microscope]
1 to 4 show a fingertip capillary blood flow observation microscope according to a first embodiment, FIG. 1 is a perspective view, FIG. 2 is a plan view, FIG. 3 is a front view, and FIG. 4 is a right side view.

  As shown in FIGS. 1 to 4, this fingertip capillary blood flow observation microscope is a clothespin-like first holding member configured to be rotatable around a rotation axis 10 and to be able to be restored to an initial position. 20 has a main body composed of the second holding member 30. The first holding member 20 and the second holding member 30 have substantially the same shape and size as each other, and have a substantially constant width in a direction parallel to the rotating shaft 10. The first holding member 20 and the second holding member 30 have a holding portion 21 and a holding portion 31 on one end side, respectively, and these holding portions 21 and 31 face each other. The material of the first holding member 20 and the second holding member 30 is selected as needed, but typically, plastic is used. The rotating portions of the first holding member 20 and the second holding member 30 can be configured in the same manner as conventionally known general clothespins.

  On the opposing inner surfaces of the holding portion 21 and the holding portion 31, blood flow observation of the capillary of the fingertip of the subject is performed between the holding portion 21 and the holding portion 31 from a direction perpendicular to the rotation axis 10. When the finger of the hand to be tried and the ring finger of the opposite hand of the dominant hand are inserted and pinched, the finger housing portions 41 and 42 for restraining this finger in a direction perpendicular to the finger and parallel to the rotation axis 10 are provided. Is provided. The finger accommodating portion 41 is provided on the inner surface of the holding portion 21 so as to extend in a direction perpendicular to the rotation axis 10, and the lower half of the portion of the finger of the subject extending from the distal phalanx to the middle phalanx ( (A part on one side opposite to the claw) is formed of a semi-cylindrical recess having a cross-sectional shape, a cross-sectional dimension, and a length. The finger accommodating portion 42 is provided on the inner surface of the holding portion 31 so as to extend in a direction perpendicular to the rotation axis 10, on a portion extending from the distal phalanx to the middle phalanx of the finger of the subject. It is formed of a semi-cylindrical recess having a cross-sectional shape, a cross-sectional dimension and a length capable of accommodating a half (one side portion on the claw side). The inner part of the finger housing portions 41 and 42 has a shape conforming to the shape of the tip of the finger. The widths of the finger housing portions 41 and 42 can accommodate a portion of the finger of the subject's hand that hangs from the distal phalanx to the middle phalanx, and the finger is perpendicular to the finger and parallel to the rotation axis 10. It is selected as needed within a range in which it can be constrained, but is generally, for example, 15 mm or more and 25 mm or less, for example, 20 mm. The depth of the finger housing portions 41 and 42 is, for example, 3 mm or more and 10 mm or less, for example, 5 mm. Although the depth of the finger housing 41 and the depth of the finger housing 42 may be the same or different from each other, in FIGS. 1 to 4, the depth of the finger housing 41 may be slightly larger than the depth of the finger housing 42. It is shown. The length of the finger housing portions 41 and 42 is, for example, 30 mm or more and 45 mm or less, for example, 35 mm. The material of the surface of the finger accommodating portions 41 and 42 is selected as needed, but a material having a certain degree of flexibility, such as a silicone resin, capable of softly receiving a finger is preferably used.

  The end of the first holding member 20 on the side opposite to the holding section 21 constitutes the operation section 22, and the end of the second holding member 30 on the side opposite to the holding section 31 constitutes the operation section 32. Between the operating portion 22 of the first holding member 20 and the operating portion 32 of the second holding member 30, a pinching spring 50 made of a curved metal wire made of a highly elastic metal such as spring steel or an elongated metal piece is attached. Have been. Between the operating portion 22 of the first holding member 20 and the operating portion 32 of the second holding member 30, a force in a direction in which the operating portion 22 and the operating portion 32 are separated from each other by the elastic force of the holding spring 50, Accordingly, a force is applied in a direction in which the holding portion 21 of the first holding member 20 and the holding portion 31 of the second holding member 30 approach each other, whereby the first holding member 20 and the second holding member 30 are moved. It is configured to be rotatable around the rotation shaft 10 and to be able to be restored to the initial position.

  A microscope body 60 having an automatic or manual focusing function is attached to the holding portion 31 of the second holding member 30 so as to penetrate the holding portion 31 and face the holding portion 21 of the first holding member 20. Have been. Although not shown, the microscope main body 60 may be the same as a general optical microscope barrel having an imaging optical system including an objective lens, an eyepiece, and the like provided on the optical axis. However, here, it is assumed that it is configured by a fiberscope. In a fiberscope, an objective lens is provided on one end surface of a fiber bundle, and an image sensor is provided on the other end side of the fiber bundle. The output terminal of the imaging device is connected to a display of a computer or a display of a smartphone via a cable, and an image can be displayed on these displays. The objective lens is provided at the tip (bottom) of the microscope main body 60 facing the holding portion 21 of the first holding member 20. At an end of the microscope main body 60, a plurality (for example, eight) of light-emitting diodes as an illumination optical system are attached at equal intervals so as to surround the objective lens on a circumference around the optical axis. However, the illumination optical system may be provided around the microscope main body 60. The microscope main body 60 is provided with a focus adjustment dial 61. When performing manual focusing, the focus can be adjusted by turning the focus adjustment dial 61.

  As shown in FIGS. 3 and 4, the holding portion 21 of the first holding member 20 and the second holding member 30 are provided on the inner surface of the holding portion 31 of the second holding member 30, more specifically, on the inner surface of the finger housing portion 42. When the finger of the subject's hand is pinched between the pinching portion 31 of the subject and the fingernail, the finger nail is caught by the cuticle, thereby moving the finger forward with respect to the first holding member 20 and the second holding member 30 in the longitudinal direction. A cuticle stopper 70 for blocking is provided. FIG. 5 shows the inner surface of the holding portion 31. As shown in FIG. 5, the cuticle stopper 70 accommodates the fingers of the subject's hand in the finger accommodating portions 41 and 42 and forms the It extends in a direction parallel to the rotating shaft 10 so as to cross the fingernail in a direction perpendicular to the finger with the finger held therebetween. The tip of the cuticle stopper 70 facing the holding portion 21 of the first holding member 20 is parallel to the rotating shaft 10. The cross-sectional shape in a direction perpendicular to the direction in which the cuticle stopper 70 extends is trapezoidal. The side of the cuticle stopper 70 having the trapezoidal cross section on the finger insertion side is adapted to be hooked on the cuticle of the fingernail. In this case, since the side of the cuticle stopper 70 on the finger insertion side is at an acute angle with respect to the fingernail, the cuticle or the nail is prevented from being damaged when the tip of the cuticle stopper 60 is hooked on the cuticle of the fingernail. be able to. The distance D between the intersection (intersecting line) between the upper base of the trapezoidal cross section of the cuticle stopper 70 and the side surface on the finger insertion side and the optical axis of the microscope main body 60 is determined by the cuticle stopper at the cuticle of the fingernail during observation. The optical axis of the microscope main body 60 is selected such that the optical axis of the microscope main body 60 is positioned on the epidermis of the nail base adjacent to the cuticle with the tip of 70 being hooked. The distance D is, for example, 1.0 mm or more and 2.0 mm or less, or 1.2 mm or more and 1.8 mm or less, or 1.3 mm or more and 1.6 mm or less, for example, 1.4 mm. The length of the lower bottom of the cuticle stopper 60 is, for example, 1 mm or more and 2 mm or less, for example, 1.5 mm, and the length of the upper bottom is, for example, 0.5 mm or more and 1.5 mm or less, for example, 1 mm. If necessary, the corner of the tip of the cuticle stopper 60 may be chamfered in a straight line or a curved line such as an arc. By doing so, it is possible to more reliably prevent the cuticle or the nail from being damaged when the tip of the cuticle stopper 60 is hooked on the cuticle of the fingernail. FIG. 5 shows a distal end portion of the microscope main body 60, and a plurality of (for example, eight) attached at equal intervals so as to surround the objective lens 62 on a circumference around the optical axis as an illumination optical system. 2) shows the light emitting diode illumination area 63.

[How to use a fingertip capillary blood flow observation microscope]
A method of observing the blood flow of the capillary at the fingertip of the subject's hand using this fingertip capillary blood flow observation microscope will be described.

  FIG. 6 shows a place for observing the blood flow of the capillary at the fingertip. As shown in FIG. 6, the epidermis of the nail base adjacent to the cuticle of the fingernail is the observation site.

  First, the operating portion 22 of the first holding member 20 and the operating portion 32 of the second holding member 30 of the fingertip capillary blood flow observation microscope are pinched by a finger of the hand to apply a force to the first holding member 20. The part 21 and the holding part 31 of the second holding member 30 are separated from each other.

  In this state, a finger of a subject's hand for observing blood flow in a capillary at a fingertip, typically, from a gap between the holding portion 21 of the first holding member 20 and the holding portion 31 of the second holding member 30. Then, the ring finger of the hand on the other side is inserted into the finger housing portions 41 and 42. Preferably, a portion of the fingernails immediately behind the cuticle is pre-coated with a small amount of oil. The oil is applied in order to suppress the reflection of illumination light on the epidermis of the nail base and to make it easier to observe the blood flow in the capillaries. Thereafter, the application of force to the operation portion 22 of the first holding member 20 and the operation portion 32 of the second holding member 30 is stopped. By doing so, the finger is sandwiched between the holding portion 21 of the first holding member 20 and the holding portion 31 of the second holding member 30 by the holding spring 50 trying to restore the initial state. At this time, the fingers accommodated in the finger accommodating portions 41 and 42 are restrained in a direction parallel to the rotating shaft 10 and a direction perpendicular to the rotating shaft 10. In this state, the finger is moved slightly forward so that the side of the cuticle stopper 70 on the finger insertion side is hooked on the cuticle. This state is shown in FIGS. Here, FIG. 7 is a perspective view, FIG. 8 is a right side view, and FIG. 9 is a schematic diagram of a fingertip viewed from the back of the finger housing portions 41 and 42 in a state where a finger is inserted into the finger housing portions 41 and 42. . FIG. 10 shows a state in which the cuticle stopper 70 is located near the cuticle at the tip of the finger.

  Thereafter, the microscope main body 60 is automatically or manually focused, and the objective lens of the microscope main body 60 is focused on the epidermis of the nail base near the cuticle of the nail. When performing manual focusing, the focus of the objective lens of the microscope main body 60 is adjusted to the epidermis of the nail base near the cuticle of the nail by turning the focus adjustment dial 61 of the microscope main body 60. After focusing in this manner, the blood flow of the capillary at the fingertip is observed by the microscope main body 60 through the epidermis of the nail base. The image observed in this manner is captured by the image sensor, and the image is sent to a display of a computer or a display of a smartphone via a cable, and is displayed on these displays. Thus, the blood flow of the capillary at the fingertip can be observed on the display.

  As described above, according to the first embodiment, the subject places his / her finger on the blood vessel in the capillary at the fingertip between the holding portion 21 of the first holding member 20 and the second holding member 30. Insert the finger into the finger accommodating portions 41 and 42 from the gap between the pinching portion 31 and hook the side of the tip of the cuticle stopper 70 on the insertion side of the finger on the cuticle of the fingernail. In addition, the blood flow of the capillary can be easily and clearly observed simply by adjusting the focus of the microscope main body 60 to the epidermis of the nail base adjacent to the cuticle of the fingernail while being restrained in the vertical direction.

<Second embodiment>
[Fingertip capillary blood flow observation microscope]
11 to 13 show a fingertip capillary blood flow observation microscope according to the second embodiment, FIG. 11 is a perspective view, FIG. 12 is a plan view, and FIG. 13 is a front view.

  As shown in FIGS. 11 to 13, the fingertip capillary blood flow observation microscope includes a finger and a cuticle held between a holding portion 21 and a holding portion 31 by a first holding member 20 and a second holding member 30. Unlike the fingertip capillary blood flow observation microscope according to the first embodiment, the observation window 33 for observing the state of the stopper 70 from the outside is provided, and other configurations are the same as those according to the first embodiment. This is similar to a fingertip capillary blood flow observation microscope.

[How to use a fingertip capillary blood flow observation microscope]
The method of using the fingertip capillary blood flow observation microscope is the same as that of the fingertip capillary blood flow observation microscope according to the first embodiment.

  According to the second embodiment, in addition to the same advantages as the first embodiment, the finger and the cuticle are cut out from the observation window 33 while the finger is held between the holding portion 21 and the holding portion 31. By observing the state of the stopper 70, it is possible to obtain an advantage that it is possible to observe that the tip of the cuticle stopper 70 is caught on the cuticle of the fingernail and then observe the blood flow of the capillary of the finger. it can.

  Although the embodiments of the present invention have been specifically described above, the present invention is not limited to the above embodiments, and various modifications based on the technical concept of the present invention are possible.

  For example, the numerical values, configurations, shapes, materials, methods, and the like described in the above embodiments are merely examples, and different numerical values, configurations, shapes, materials, methods, and the like may be used as necessary.

  For example, in the above-described first embodiment, the first holding member 20 and the second holding member 20 are attached by attaching the holding spring 50 between the operating portion 22 of the first holding member 20 and the operating portion 32 of the second holding member 30. Although the second holding member 30 is configured to be able to be restored to the initial position, the first holding member 20 and the second holding member 30 are provided with a torsion coil spring instead of the first holding member 20 and the second holding member. The first holding member 20 and the second holding member 30 may be configured to be able to be restored to the initial positions.

  DESCRIPTION OF SYMBOLS 10 ... Rotating shaft, 20 ... 1st holding member, 21 ... Holding part, 22 ... Operating part, 30 ... Second holding member, 31 ... Holding part, 32 ... Operating part, 33 ... Window for observation, 41, 42 ... Finger accommodating part, 50: pinching spring, 60: microscope body, 61: focus adjustment dial, 62: objective lens, 70: cuticle stopper

Claims (3)

A first holding member and a second holding member configured to be rotatable about a rotation axis and to be able to be restored to an initial position;
Between the holding portion of the first holding member and the holding portion of the second holding member, provided on inner surfaces of the holding portion of the first holding member and the holding portion of the second holding member facing each other. When inserting a finger for observing the blood flow of the capillary at the fingertip of the subject's hand from a direction perpendicular to the rotation axis, insert the finger in a direction perpendicular to the finger and in a direction parallel to the rotation axis. A finger storage unit that is housed in a restrained state,
A microscope main body having a focusing function attached to the second holding member such that a tip end faces the holding portion of the first holding member;
When the finger is clamped between the clamping portion of the first clamping member and the clamping portion of the second clamping member provided on the inner surface of the clamping portion of the second clamping member, A cuticle stopper that prevents the finger from moving forward in the longitudinal direction with respect to the first holding member and the second holding member by being hooked on the cuticle of the nail;
Fingertip capillary blood flow configured such that the optical axis of the microscope main body is aligned with the nail base adjacent to the cuticle of the finger nail in a state where the tip of the cuticle stopper is hooked on the cuticle of the finger nail. Observation microscope.   The fingertip capillary blood flow observation microscope according to claim 1, wherein a distance between a tip of the cuticle stopper and an optical axis of the microscope body is 1.0 mm or more and 2.0 mm or less.   The finger accommodating portion includes a first concave portion for accommodating a lower half of the finger provided on an inner surface of the holding portion of the first holding member and extending in a direction perpendicular to the rotation axis, and the second holding member. The fingertip capillary blood flow observation microscope according to claim 1 or 2, comprising a second concave portion provided on an inner surface of the holding portion and extending in a direction perpendicular to the rotation axis to accommodate an upper half of the finger.

Images