Medical testing equipment

Abstract

In order to fix the position of a gripping hand to enable stable operation for examination, this medical examination device is operated to examine a subject while being gripped by one hand, and is provided with a grip part that the operator can grip between the thumb of one hand and at least one of four fingers on the index finger side, that is, the index finger, the middle finger, the ring finger, and the little finger, the grip part being provided with a finger hook part that, when an operator grips the grip part by one hand, catches any of the fingers on the index finger side. The medical examination device may be provided with an index finger-side operation part that is used during an examination operation and is provided at a position within the reach of a finger expected to be used for the operation among the fingers on the index finger side, the positions of which are fixed by the finger hook part when the operator grips the grip part.

Description

Technical Field

[0001] The present invention relates to a medical inspection device for inspecting a subject.

Background Art

[0002] Conventionally, in the medical field, a handheld inspection device for inspecting a subject such as a human or an animal has been used. Patent Document 1 discloses an inspection device capable of irradiating slit light to an eye as a subject and inspecting the anterior segment of the eye while being held by one hand by an operator.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Here, in the inspection device described in Patent Document 1, since there is no configuration for determining the position of the hand to be held, for example, when an operator holds the inspection device without firmly visually confirming it, the position of the hand may deviate from the ideal position for operation, making it difficult to operate.

[0005] The present invention has been made in view of the above problems, and an object thereof is to provide a medical inspection device capable of stably performing an inspection operation by determining the position of the hand to be held.

Means for Solving the Problems

[0006] The medical testing device according to the present invention is a medical testing device for testing a subject by operating it while being held in one hand, comprising a grip portion that can be grasped by an operator by being held between the thumb and at least one of the four fingers on the index finger side of one hand: the index finger, middle finger, ring finger, and little finger (hereinafter referred to as "index finger side fingers"), wherein the grip portion is provided on the grip portion so as to hook onto one of the fingers located on the index finger side when the operator grasps the grip portion with one hand.

[0007] Furthermore, the medical examination device according to the present invention may be characterized in that, when the operator grasps the grip portion with one hand, the index finger side operating portion used for the examination is provided at a position within reach of the index finger side fingers whose position is determined by the finger rest portion, and which are predetermined to be used for operation.

[0008] Furthermore, the medical examination device according to the present invention may be characterized in that the index finger side operating part is positioned within reach of the operating finger, assuming that the finger closer to the thumb than the finger receiving the load from the finger rest is the operating finger.

[0009] Furthermore, the medical examination device according to the present invention may be characterized in that a thumb-side operating part used for operating the examination is provided at a position within reach of the thumb, whose position is determined by the finger rest when the operator grasps the grip portion with one hand.

[0010] Furthermore, the medical testing apparatus according to the present invention may be characterized by comprising: an irradiation unit that irradiates the subject with irradiation light; an irradiation angle adjustment unit that adjusts the irradiation angle of the irradiation light by rotating the irradiation unit with respect to a rotation axis; and a scale unit that provides a scale indicating the rotation angle on the upper surface of the rotation axis.

[0011] Furthermore, the medical examination device according to the present invention may be characterized in that, when the thumb side and index finger side are divided into two by a reference plane which is parallel to the central axis of the grip portion and passes through the position of the finger rest, the load balance is configured such that the center of gravity of the entire device is located on the index finger side. [Effects of the Invention]

[0012] One or more of the deficiencies are resolved by the embodiments of this application. [Brief explanation of the drawing]

[0013] [Figure 1] This is an external view showing an example of the configuration of a medical testing device 100 corresponding to at least one embodiment of the present invention. [Figure 2] This is an external view showing an example of the configuration of a medical testing device 100 corresponding to at least one embodiment of the present invention. [Figure 3] This is an external view showing an example of the configuration of a medical testing device 100 corresponding to at least one embodiment of the present invention. [Figure 4] This is an external view of a medical testing device 100 corresponding to at least one embodiment of the present invention when held in one hand by an operator. [Figure 5] This is an explanatory diagram illustrating the operation buttons used for operating the examination on the thumb-side operation section of a medical examination device 100 corresponding to at least one embodiment of the present invention. [Figure 6] This is an explanatory diagram illustrating the operation buttons used for operating the examination on the thumb-side operation section of a medical examination device 100 corresponding to at least one embodiment of the present invention. [Figure 7] This is an explanatory diagram illustrating the operation buttons used for operating the examination on the thumb-side operation section of a medical examination device 100 corresponding to at least one embodiment of the present invention. [Figure 8] This is an explanatory diagram illustrating the operation buttons used for operating the examination on the thumb-side operation section of a medical examination device 100 corresponding to at least one embodiment of the present invention. [Figure 9] It is an explanatory diagram for explaining a shape example of a finger hook portion of a medical inspection device 100 corresponding to at least one of the embodiments of the present invention. [Figure 10] It is an explanatory diagram for explaining a shape example of a finger hook portion of a medical inspection device 100 corresponding to at least one of the embodiments of the present invention. [Figure 11] It is an explanatory diagram for explaining an example of a scale portion 90 of a medical inspection device 100 corresponding to at least one of the embodiments of the present invention.

Embodiments for Carrying out the Invention

[0014] Hereinafter, an example of a medical inspection device according to an embodiment of the present invention will be described with reference to the drawings. For example, a medical inspection device irradiates slit light onto an eye (hereinafter referred to as a "test eye"), which is an example of a subject, and observes scattered light generated by scattering in the test eye to inspect the cornea, lens, etc. of the test eye. Other examples of medical inspection devices include ophthalmic devices such as tonometers, fundus cameras, auto refractometers, and thermometers. Hereinafter, the case where the medical inspection device is a slit lamp will be described as an example.

[0015] FIGS. 1 to 3 are external views showing an external appearance example of the configuration of a medical inspection device 100 corresponding to at least one of the embodiments of the present invention. The medical inspection device 100 is a device for inspecting a test eye by operating it while holding it with one hand. As shown in FIGS. 1 to 3, the medical inspection device 100 includes an irradiation unit 10, an observation unit 20, a grip unit 30, a finger hook portion 40a, an index finger side operation unit 50, a thumb side operation unit 60a, a base unit 70, an irradiation angle adjustment unit 80, and a scale portion 90.

[0016] The irradiation unit 10 has the function of irradiating the eye under examination with irradiation light. In this example, the irradiation unit 10 has the function of irradiating the eye under examination with slit light or spot light as the irradiation light. The irradiation unit 10 consists of an irradiation cylinder 11, an irradiation port 12, a disc operating unit 13, a swing unit 14, and a separate light source installation unit 15. The irradiation cylinder 11 has a known configuration for irradiating slit light, as described in the above-mentioned Patent Document 1, arranged inside. In this example, the irradiation cylinder 11 includes a light source, a condenser lens, a spot disc, a slit disc, and a light projection lens inside. An example of a light source is an LED. In the irradiation cylinder 11, light emitted from the light source is focused by the condenser lens and then passes through the slit disc to generate slit light or spot light. This slit light or spot light enters the irradiation port 12. The irradiation port 12 consists of a light projection prism arranged inside. The slit light or spot light that enters the light projection prism changes direction and is irradiated towards the eye under examination outside the device. The disc operation unit 13 is a dial that allows the operator to rotate the spot disc and slit disc to select the length and width of the slit light and the diameter of the spot light. The swing unit 14 consists of a plate-shaped member with one end located at the bottom of the irradiation cylinder 11 and the other end located at a predetermined distance from the irradiation cylinder 11 connected to the irradiation angle adjustment unit 80, which will be described later. A marker is provided on the part of the swing unit 14 that contacts the outer circumference of the irradiation angle adjustment unit 80 to indicate the rotation angle of the irradiation unit 10.

[0017] The separate light source installation part 15 has a function of irradiating the eye to be examined with light for fluorescence observation illumination and background illumination, and is provided separately from the irradiation port 12. The separate light source installation part 15 consists of a light source installation part for fluorescence observation illumination and a light source installation part for background illumination. For example, a blue LED is installed as a light source in the light source installation part for fluorescence observation illumination, and a white LED is installed as a light source in the light source installation part for background illumination. Note that the separate light source installation part 15 may include only one of the light source installation part for fluorescence observation illumination and the light source installation part for background illumination. Conventionally, light for fluorescence observation illumination and background illumination was irradiated from the same irradiation port as slit light or spot light, but it was necessary to switch between slit light or spot light and fluorescence observation illumination or background illumination, and simultaneous irradiation was not possible. However, since a light source is directly installed in the separate light source installation part 15 provided in the medical inspection device 100, light for fluorescence observation illumination and background illumination can also be irradiated when slit light or spot light is irradiated. As a result, for example, it can be used for photographing or the like (for example, photographing using background illumination of the anterior eye part of the subject as the subject) for explaining the state of irradiation of slit light to the subject who is the subject. In addition, since the light for fluorescence observation illumination and background illumination is generated in an optical path different from the optical path of slit light or spot light, the irradiation range is not limited by the size of the slit turret, and the light source can be installed so that the light for fluorescence observation illumination and background illumination hits a wider range compared to the case of being generated in the same optical path. Further, as shown in FIG. 2, the separate light source installation part 15 is provided so that the light irradiated from the irradiation port 12 and the light irradiated from the separate light source installation part 15 always face substantially the same direction. For example, the separate light source installation part 15 rotates in the same way as the rotation of the irradiation port 12. By adopting such a configuration, it is not necessary to separately adjust the direction of fluorescence observation illumination and background illumination when adjusting the irradiation direction of slit light or spot light, and as a result, it is possible to improve the ease of operation of the medical inspection device 100.

[0018] The observation unit 20 has the function of observing the eye under examination with the illumination light emitted from the illumination unit 10. In this example, the observation unit 20 comprises an observation housing 21, a right eyepiece 22, a left eyepiece 23, and a magnification lever 24. The observation housing 21, the right eyepiece 22, and the left eyepiece 23 are internally configured with the known observation optical system described in Patent Document 1 mentioned above. The observation optical system is divided into one for observation with the right eye and one for observation with the left eye. The observation optical system for the right eye is internally configured with the observation housing 21 and the right eyepiece 22. The observation optical system for the left eye is internally configured with the observation housing 21 and the left eyepiece 23. For example, the observation optical system consists of at least an objective lens, an eyepiece prism, a reticle lens, and an eyepiece lens. The slit light from the illumination unit 10 is scattered by the eye under examination and incident on the objective lens as scattered light. The incident scattered light passes through the eyepiece prism, the reticle lens, and the eyepiece lens, becoming light that can be observed by the operator. The magnification lever 24 is a lever that moves the objective lens in the forward and backward direction by moving it left or right, thereby changing the observation magnification of the eye under examination.

[0019] The grip portion 30 is provided so that the operator can grasp it by gripping it between the thumb and at least one of the four fingers on the index finger side of one hand (hereinafter referred to as "index finger side fingers"). The shape of the grip portion 30 is not particularly limited as long as the operator can grasp it, but a substantially cylindrical shape is preferred. In this example, as shown in Figures 1 to 3, the grip portion 30 is attached to the lower part of the observation housing 21 and has a shape like a curved cylinder. Hereinafter, the state in which the central axis of the grip portion 30 is oriented in a substantially vertical direction (up and down direction in Figures 1 to 3) will be referred to as the "reference state". The direction of the central axis of the grip portion 30 shown in Figures 1 to 3 is assumed to be substantially vertical. Therefore, the state shown in Figures 1 to 3 is the reference state.

[0020] The finger rest 40a is provided on the grip portion 30 so that it can be hooked onto one of the fingers on the index finger side when the operator grasps the grip portion 30 with one hand. Here, the index finger side refers to the side of the grip portion 30 that the index finger can contact when the grip portion 30 is grasped. The fingers located on the index finger side are at least one of the index finger, middle finger, ring finger, and little finger. Furthermore, for the finger rest 40a to be hooked onto a finger means that the finger is in a state where it is bearing the load of the finger rest 40a. The shape of the finger rest 40a is not particularly limited as long as it is possible to hook onto one of the fingers located on the index finger side. In the examples shown in Figures 1 to 3, the shape of the finger rest 40a is a flange-like projection from the side of the grip portion 30. The grip portion 30 is provided with a finger rest 40a, allowing the operator to grasp the grip portion 30 by hooking the finger rest 40a onto one of the fingers located on the index finger side. Therefore, the operator can stably perform the inspection operation with the grip portion 30 in the ideal hand position determined by the finger rest 40a. Examples of the shape of the finger rest will be described later.

[0021] The index finger side operating part 50 is used for the operation of the inspection and is located within the reach of the finger designated as the finger to be used for operation, among the fingers on the index finger side whose position is determined by the finger hook 40a when the operator grasps the grip part 30 with one hand. The finger designated as the finger to be used for operation is not particularly limited to any of the fingers on the index finger side, but it is preferable to use a finger other than the finger that the finger hook 40a catches on. In this example, the index finger is designated as the finger to be used for operation. Furthermore, the position within the reach of the finger means the position that can be reached by moving the finger. An example of a position within the reach of the finger designated as the finger to be used for operation is the position of the grip part 30 opposite the finger designated as the finger to be used for operation when the operator grasps the grip part 30 with one hand. The index finger side operating part 50 is, for example, a button or a switch. In this example, the index finger side operating part 50 is a switch in which, when pressed, a light source located inside the irradiation cylinder 11 of the irradiation unit 10 emits light and light is irradiated from the irradiation port 12.

[0022] Furthermore, the index finger side operating part 50 may be positioned within reach of the operating finger, assuming that the operating finger is the finger closer to the thumb than the finger receiving the load from the finger rest 40a. The finger closer to the thumb than the finger receiving the load is, for example, the index finger if the finger receiving the load in the standard state is the middle finger. With this configuration, it becomes possible to perform inspection operations more stably with a finger that is relatively less affected by the load from the finger rest 40a.

[0023] The thumb-side operating section 60a is used for operating the eye examination and is located within reach of the thumb, whose position is determined by the finger rest 40a when the operator holds the grip section 30 with one hand. The thumb-side operating section 60a may have multiple operating points. The operating points are equipped with operating members such as buttons, various switches, and dials for inputting operations related to the eye examination. In this example, the operating points of the thumb-side operating section 60a are equipped with operating buttons 61a to 63a and an operating dial 64 as operating members. The operating buttons 61a to 63a are assigned various functions related to the examination, such as turning the fluorescence observation illumination and background illumination on and off. The operating dial 64 is assigned a function, such as adjusting the amount of light emitted from the slit light emitted from the illumination port 12 of the illumination unit 10. The operating points of the multiple operating buttons included in the thumb-side operating section 60a are not particularly limited as long as they are located within reach of the thumb, whose position is determined by the finger rest 40a when the operator holds the grip section 30 with one hand. Examples of the shape, size, and arrangement of the multiple operating members included in the thumb-side operating section 60a will be described later.

[0024] The base portion 70 is a plate-shaped member with one end attached to the lower part of the grip portion 30. The other end of the base portion 70 is provided with a beam angle adjustment portion 80, which will be described later.

[0025] The irradiation angle adjustment unit 80 is a component that adjusts the irradiation angle of the irradiation light by rotating the irradiation unit 10 with respect to a rotation axis. In this example, the irradiation angle adjustment unit 80 is fixedly attached to the other end of the base unit 70. In this example, the irradiation angle adjustment unit 80 is rotatably attached to a hole formed in the swing unit 14 at a predetermined distance from the irradiation cylinder 11, with its upper surface exposed. That is, the base unit 70 and the swing unit 14 are connected via the irradiation angle adjustment unit 80, and the swing unit 14 is rotatable relative to the base unit 70 with respect to the irradiation angle adjustment unit 80. The irradiation angle adjustment unit 80 is composed of, for example, a bearing.

[0026] The scale section 90 has markings on the upper surface of the rotating shaft indicating the rotation angle. Specifically, the scale section 90 has markings on the upper surface of the rotating shaft in an arc shape that correspond to the irradiation angle of the irradiation light emitted by the irradiation section 10. In this example, the scale section 90 is provided as a marking on the upper surface of the irradiation angle adjustment section 80 fitted into the swing section 14 that indicates the rotation angle based on the irradiation angle adjustment section 80 of the swing section 14 in an arc shape. The scale section 90 will be described in detail later.

[0027] The configuration and appearance of the medical examination device 100 have been described above. The medical examination device 100 may be a device in which the load balance is configured such that the center of gravity of the entire device is located on the index finger side when the thumb side and index finger side are divided into two by a reference plane which is a virtual plane parallel to the central axis and passes through the position of the finger rest 40a. With such a load balance, even if the grip of the grip portion 30 loosens, the medical examination device 100 will tilt from the thumb side to the index finger side with respect to the finger rest 40a. Since this tilt occurs with respect to the finger rest 40a, for example, in the reference state, the state in which the finger rest 40a is hooked onto the finger is maintained. As a result, even if the grip of the hand loosens, it becomes easier to maintain the state of gripping the grip portion 30.

[0028] Figure 4 is an external view of a medical examination device 100 corresponding to at least one embodiment of the present invention when held in one hand by an operator. As shown in Figure 4, the grip portion 30 is held between the thumb and index finger of the operator's hand H. The grip portion 30 is divided into an index finger side (front side in Figure 4) where four fingers are located and a thumb side (rear side in Figure 4) where one thumb is located. The finger rest portion 40a is provided on the index finger side and is hooked onto the middle finger of hand H. That is, in Figure 4, the middle finger of hand H is in a state where it is receiving the load of the finger rest portion 40a. The index finger of hand H is in contact with the index finger side operating portion 50 and is in a state where it can be operated. Also, the thumb of hand H is in contact with the thumb side operating portion 60a and is in a state where it can be operated. The plane that divides the thumb side and the index finger side into two parts passing through the dashed line A is the reference plane described above. The medical examination device 100 in this example is a device in which the load balance is configured such that the center of gravity of the entire device is located on the index finger side when the device is divided into two parts, the thumb side and the index finger side, by a reference plane.

[0029] Incidentally, the operating buttons 61a to 63a, which serve as operating members provided at the operating location of the thumb-side operating section 60a shown in Figure 1, are all of the same size and are provided at a predetermined distance apart in the lateral direction in the standard state. However, the position of the operating location and the shape and size of the operating members are not limited to these. Below, with reference to Figures 5 to 8, the operating locations and operating members of the thumb-side operating section will be explained using the operating buttons as an example.

[0030] Figures 5 to 8 are explanatory diagrams illustrating the operating buttons used for operating the examination on the thumb-side operating section of a medical examination device 100 corresponding to at least one embodiment of the present invention. Note that the location where the operating dial 64 is provided is the same as the thumb-side operating section 60a in this example, so the explanation is omitted.

[0031] As shown in Figure 5, the thumb-side operating section 60b has operating buttons 61b to 63b and an operating dial 64. Here, operating button 61b has a different contact area with the operator's finger compared to the other operating buttons 62b and 63b. Preferably, the area of ​​operating button 61b is larger than that of operating buttons 62b and 63b by a predetermined percentage or more. With this configuration, even when operating without clearly visually confirming, the operator can determine the position of their thumb and which operating button they are touching based on the difference in the area of ​​the operating buttons.

[0032] Furthermore, as shown in Figure 6, the thumb-side operating section 60c has operating buttons 61c to 63c and an operating dial 64. Here, the operating buttons 61c to 63c are spaced further apart than in the example shown in Figure 1. Specifically, the operating buttons 61c to 63c are spaced so that they cannot be pressed simultaneously with a pre-determined thumb size. By providing the operating buttons in this manner, simultaneous operation as a result of accidental operation can be prevented even if the user does not carefully check the buttons visually.

[0033] Furthermore, as shown in Figure 7, the thumb-side operating section 60d is provided with operating buttons 61d and 62d, a barrier 63d, and an operating dial 64. Here, the barrier 63d is a member that protrudes outward (rearward) by a predetermined length or more, and is provided between the operating buttons 61d and 62d. The predetermined length is appropriately determined based on the size of the operating buttons 61d and 62d. Examples of protruding shapes include convex shapes and rectangular parallelepiped shapes. It is preferable that the barrier 63d has a different shape from the other operating members provided on the thumb-side operating section 60d. By providing the barrier 63d between the operating buttons in this way, the operator can confirm the position of their thumb using the barrier even without clearly visually checking, and can avoid placing their thumb in a position where simultaneous operation is possible, thereby preventing simultaneous operation as an error.

[0034] Furthermore, as shown in Figure 8, the thumb-side operating section 60e has operating buttons 61e to 63e and an operating dial 64. Here, operating button 61e has one protrusion formed on its surface. Operating button 63e has two protrusions formed on its surface. Operating button 62e has no protrusions. It is preferable that the number of protrusions formed on each operating button differs. By forming protrusions on the surface of the operating buttons in this way, the operator can determine which operating button they are touching by the number of protrusions, even without carefully visually checking.

[0035] Furthermore, in order to prevent inconvenience caused by accidental operation due to simultaneous pressing of operation buttons, the functions assigned to adjacent operation buttons at the designated operating locations may be a predetermined combination of functions. Here, it is preferable that the predetermined combination of functions has less impact on the inspection operation when the corresponding processes are executed approximately simultaneously compared to other combinations. An example of a predetermined combination of functions is the combination of the fluorescence observation illumination switching function and the imaging function. In this way, by assigning predetermined combinations of functions to adjacent operation buttons at the operating locations, the risk during operation can be reduced, and the inspection operation can be performed without causing stress to the operator due to simultaneous pressing.

[0036] The above explains the operating points and buttons on the thumb-side operating section, using operating buttons as an example. Of course, the shapes, sizes, and operating points described in Figures 5 to 8 can also be applied to various other types of operating components such as switches and dials.

[0037] Next, we will describe examples of the shape of the finger rest portion of the medical examination device 100. The finger rest portion 40a described above has a shape that protrudes in a direction approximately perpendicular (forward) to the central axis of the grip portion 30, as shown in Figure 3. However, the shape of the finger rest portion is not limited to this. Below, we will describe examples of the shape of the finger rest portion with reference to Figures 9 and 10.

[0038] Figures 9 and 10 are explanatory diagrams illustrating examples of finger rest shapes for a medical examination device 100 corresponding to at least one embodiment of the present invention. Hereinafter, a finger rest shape different from the finger rest 40a described above will be explained with reference to Figures 9 and 10.

[0039] As shown in Figure 9, the finger rest portion 40b protrudes outward from the index finger side of the grip portion 30 and is bent in a direction approximately vertically downward in the standard state. Here, the shape of the finger rest portion 40b is not particularly limited as long as it is bent in a direction approximately vertically downward in the standard state, but it is preferable that the finger rest portion 40b has a shape in which the movement of the finger is restricted by the portion of the finger rest portion 40b that extends in the direction of the finger receiving the load of the finger rest portion 40b. By adopting the shape of the finger rest portion 40b, it becomes easier to maintain the state in which the finger rest portion 40b is hooked onto the finger, and as a result, the operator can perform the inspection operation more stably.

[0040] Furthermore, as shown in Figure 10, the finger rest portion 40c protrudes outward from the index finger side of the grip portion 30, is bent vertically upward in the standard state, and is attached to the index finger side of the grip portion 30 vertically upward in the standard state, compared to the finger assumed to be used for operation. In other words, both ends of the finger rest portion 40c are attached to the index finger side of the grip portion 30. The finger rest portion 40c is ring-shaped, including a part of the grip portion 30. Here, it is preferable that the index finger side operating portion 50 is provided between the points where both ends of the finger rest portion 40c are attached. Note that the finger assumed to be placed inside the ring shape formed by the finger rest portion 40c may be one or multiple fingers. With this configuration, inputting an operation to the index finger side operating portion 50 when a finger is not placed inside the ring shape formed by the finger rest portion 40c becomes more difficult compared to when the finger rest portion is not ring-shaped, thus preventing accidental operation of the index finger side operating portion 50.

[0041] The above describes examples of the shape of the finger rests of the medical examination device 100. Although the description has focused on a case where the medical examination device 100 is provided with one finger rest, a single medical examination device 100 may be provided with multiple finger rests. For example, in Figure 1, it is conceivable to add a finger rest for the ring finger so that the middle finger and ring finger can each be hooked onto the finger rests. Furthermore, the multiple finger rests provided on the medical examination device 100 may consist of any one of the finger rests 40a to 40c described above, or some or all of them may be of different types.

[0042] Figure 11 is an explanatory diagram illustrating an example of a scale section 90 of a medical inspection device 100 corresponding to at least one embodiment of the present invention. Figure 11 shows an irradiation unit 10, a base unit 70, an irradiation angle adjustment unit 80, and a scale section 90. As shown in Figure 11, the irradiation unit 10 is rotated relative to the base unit 70 by the irradiation angle adjustment unit 80. As described above, the irradiation angle adjustment unit 80 is fitted into a hole formed at a predetermined distance from the irradiation cylinder 11 in the swing unit 14, with its upper surface exposed. In this way, the irradiation cylinder 11 and the irradiation angle adjustment unit 80 are mounted at a predetermined distance from each other in the swing unit 14. Therefore, when the swing unit 14 rotates with respect to the irradiation angle adjustment unit 80, the irradiation cylinder 11, the irradiation port 12 provided on the upper part of the irradiation cylinder 11, and the separate light source installation unit 15 rotate while changing their orientation. Accordingly, the irradiation angle of the irradiation light emitted from the irradiation port 12 and the separate light source installation unit 15 can be adjusted by the irradiation angle adjustment unit 80.

[0043] Furthermore, a scale section 90 is provided on the upper surface of the irradiation angle adjustment section 80. For example, multiple scales are provided as the scale section 90 at predetermined rotation angles based on the state shown in Figures 1 to 3. By providing the scale section 90 on the upper surface of the rotation axis in this way, the operator can visually check the scale section 90 to adjust the irradiation angle when performing an eye examination. As shown in Figure 11, a marker 16 for adjusting the rotation angle of the irradiation unit 10 may be included in the scale section 90 in the part of the swing section 14 that is in contact with the outer circumference of the irradiation angle adjustment section 80, in order to accurately grasp the current rotation angle. The positional relationship between the marker 16 and the scale on the upper surface of the irradiation angle adjustment section 80 allows the operator to grasp the rotation angle more accurately when performing the examination.

[0044] As described above, the medical testing device according to the present invention is a medical testing device for testing a subject by operating it while holding it with one hand, and is equipped with a grip portion that can be grasped by an operator by gripping it between the thumb and at least one of the fingers on the index finger side of one hand, and a finger hook portion is provided on the grip portion so that it can be hooked onto one of the fingers located on the index finger side when the operator grasps the grip portion with one hand, so that the operator can stably perform the testing operation at the ideal position of the hand that grasps the grip portion as determined by the finger hook portion.

[0045] In other words, even if the operator grasps the inspection device without clearly visually inspecting it, they can still grip the device in the ideal position for operation by hooking their fingers onto the finger rests. Furthermore, even if the operator's grip loosens, the finger rests remain hooked onto their fingers, preventing their hand from slipping from the ideal position for operation.

[0046] Furthermore, as shown in Figure 1, the medical testing device according to the present invention is capable of standing on its own by providing a base portion 70. The base portion 70 has a contact surface that makes contact with the mounting location, but in order to stand stably on its own, the contact surface must be of a certain size or larger, or the shape of the contact surface must be such that balance can be maintained. In this example, by devising the connection between the base portion 70 and the grip portion 30 of the medical testing device 100, a shape that is easy for the operator to hold is achieved without hindering the self-standing ability of the medical testing device 100.

[0047] Specifically, as shown in Figure 1, the positional relationship between the grip portion 30 and the base portion 70 is determined such that the grip end 31, which is the lower end of the grip portion 30 of the medical examination device 100, protrudes from the rear end 71 of the base portion 70 (it can also be said that the rear end 71 of the base portion is set back from the grip end 31).

[0048] This shape makes it less likely for the little finger side of the operator's palm to come into contact with the base 70 when gripping the grip portion 30, thus making it easier to handle the medical examination device 100. In particular, when gripping the grip portion 30 with the wrist held upright (the vector from the elbow to the wrist is nearly upward), the receding rear end 71 of the base portion creates space for the base of the operator's palm to move, making it easier to hold. Furthermore, because the rear end 71 of the base portion is receding and space exists, when the operator grips the grip portion 30, it becomes possible to support the entire device by pressing the base of the operator's palm against the area between the rear end 71 of the base portion and the grip end 31. In addition, the medical examination device 100 shown in Figure 1 has the problem of being prone to tipping over backward due to its center of gravity, but in this embodiment, the grip end 31 portion protrudes, and the grip end 31 takes on some of the anti-tipping effect that the base portion 70 should have, so the anti-tipping effect is not impaired. [Explanation of Symbols]

[0049] 100 Medical testing equipment 10 Irradiation area 11 Irradiation tube 12 Irradiation port 13. Disc control unit 14. Swing section 15 Separate light source installation section 16 Markers 20 Observation Department 21 Observation enclosure 22 Observation section for right eye 23 Observation section for the left eye 24. Variable magnification lever 30 Grip section 31 Grip end 40a~40c Finger rest 50 Index finger side operating part 60a~60e Thumb-side operating section 70 Base section 71 Rear end of base section 80 Irradiation angle adjustment section 90 scale markings

Claims

1. A medical testing device for examining a subject, comprising a grip portion that can be grasped by an operator by being held between the thumb and at least one of the four fingers on the index finger side of one hand (hereinafter referred to as the index finger side fingers), and operated while being grasped with one hand, When the operator grasps the grip portion with one hand, the grip portion is provided with a finger rest that protrudes outward in a flange-like shape at one point from the middle of the grip portion, which extends vertically, in a reference state where the central axis of the grip portion is approximately oriented vertically when the medical examination device body is placed on a horizontal surface, so that the grip portion will catch when a load is applied to the finger that is positioned on the index finger side and is assumed to be the finger to be hooked. The index finger side operating part used for the inspection is positioned within the reach of the index finger side of the fingers whose position is determined by the finger rest when the operator grasps the grip with one hand, and which is predetermined to be used for operation. A medical testing device characterized by the following features.

2. The index finger side operating part is positioned within reach of the finger that is intended to be used for operation, assuming that the finger closer to the thumb than the finger receiving the load from the finger rest is the operating finger. The medical testing device according to claim 1, characterized in that it is a medical testing device.

3. The thumb-side operating part used for the inspection is provided at a position within reach of the thumb, which is determined by the finger rest when the operator grasps the grip portion with one hand. A medical testing apparatus according to claim 1 or 2.

4. An irradiation unit that irradiates the subject with irradiation light, An irradiation angle adjustment unit that adjusts the irradiation angle of the irradiation light by rotating the irradiation unit with respect to the rotation axis, The rotating shaft is provided with a scale section on its upper surface that indicates the rotation angle. A medical testing apparatus according to any one of claims 1 to 3.

5. When the thumb side and index finger side are divided into two by a reference plane that is parallel to the central axis of the grip portion and passes through the position of the finger rest, the load balance is configured such that the center of gravity of the entire device is located on the index finger side, thereby applying load to the finger that is assumed to be hooked via the finger rest. A medical testing apparatus according to any one of claims 1 to 4.

6. The grip portion has one end attached to the lower part, and the base portion has a contact surface that makes contact with the mounting location of the device. The grip end, which is the lower end of the grip portion, is shaped to protrude from the rear end of the base portion. A medical testing apparatus according to any one of claims 1 to 5.

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