JP7634022B2 - Medical Devices - Google Patents

Description

The present invention relates to a medical device, and more particularly to a power supply means for the medical device.

In the medical field, handheld medical devices have been used to examine subjects such as humans and animals. Patent Document 1 discloses an examination device that can be held in one hand by an operator and irradiate a slit light onto the subject's eye to examine the anterior segment.

Patent No. 4136620

Some medical devices are equipped with functions that consume power, and as the number of functions increases, the amount of power consumed tends to increase. From the viewpoint of ensuring a stable power supply, it is most preferable to secure the power supply through a power cord, but in the case of a medical device that is used while being held by a doctor, such as the examination device described in Patent Document 1, the power cord may be a hindrance, so a configuration in which the power supply is secured by a battery such as a secondary battery installed inside may be prioritized. In the case of a medical device that can secure a power supply through a wire, the power supply is always stable, so there is no problem, but in the case of a medical device that secures a power supply through an internal battery, there is a risk of the battery running out. If the medical device uses a secondary battery as the battery, the risk can be avoided by frequently charging it, but it is difficult to manage the charging timing of a medical device that is used daily in a medical institution, and if it is left in a state where it is not charged, there is a risk that the battery will run out when you want to use it.

The present invention has been developed in consideration of the above problems, and aims to provide a medical device with a power supply means that can avoid the risk of the battery running out.

The medical device of the present invention comprises a medical device main body and a first battery pack for supplying power that is detachably attached to the medical device main body, the first battery pack having a receiving coil for receiving a magnetic field generated by a transmitting coil provided on the power transmitting side, and a secondary battery that is charged based on the power received by the receiving coil, and is configured to be capable of contactless charging even when detached from the medical device main body.

The medical device of the present invention is further characterized in that it includes a second battery pack for supplying power, which is configured to be attachable to the medical device body in place of the first battery pack.

In addition, the medical device of the present invention is characterized in that the second battery pack has a receiving coil for receiving a magnetic field generated by a transmitting coil provided on the transmitting side, and a secondary battery that is charged based on the power received by the receiving coil, and is configured to be capable of contactless charging even when removed from the medical device main body.

In addition, the medical device of the present invention is characterized in that the second battery pack has a battery holder into which a primary battery or a secondary battery can be attached, and power is supplied to the medical device main body by the primary battery or secondary battery attached to the battery holder.

The medical device of the present invention is also characterized in that the first battery pack has at least one of the following geometric characteristics: asymmetric top-bottom, asymmetric left-right, or asymmetric front-back.

The medical device of the present invention is characterized in that the medical device main body includes a main body side terminal portion that is responsible for conducting electricity between the first battery pack and the medical device body, and a protective convex portion arranged on either side of the main body side terminal portion, and the first battery pack includes a battery side terminal portion that can come into contact with the main body side terminal portion, and a protective recess formed on either side of the battery side terminal portion to receive the protective convex portion.

The medical device according to the present invention further comprises a charging stand having a power transmission coil capable of transmitting power to the power receiving coil of the first battery pack by electromagnetic induction, a mounting surface for mounting the medical device main body, and a main body receiving portion for fixing the position of the medical device main body on the mounting surface by engaging a part of the medical device main body, and the mounting surface is characterized in that it has a battery mounting position indication means for indicating the position of the first battery pack when the medical device main body is engaged with the main body receiving portion.

The embodiments of the present application address one or more of the deficiencies.

1 is an external view showing an external appearance example of a configuration of a medical device corresponding to at least one of the embodiments of the present invention. 1 is an external view showing an external appearance example of a configuration of a medical device corresponding to at least one of the embodiments of the present invention. 1 is an external view showing an external appearance example of a configuration of a medical device corresponding to at least one of the embodiments of the present invention. 1 is an external view showing an example of a battery pack insertion position at the bottom of a main body of a medical device corresponding to at least one of the embodiments of the present invention. FIG. 1 is a perspective view showing an example of a battery pack used in a medical device corresponding to at least one of the embodiments of the present invention; 1 is a perspective view illustrating an example of a charging stand for placing a medical device according to at least one of the embodiments of the present invention; FIG. 1 is a block diagram showing an example of a contactless charging method applied to a medical device corresponding to at least one of the embodiments of the present invention. 1 is a perspective view showing an example of a battery pack used in a medical device corresponding to at least one of the embodiments of the present invention; FIG. 11 is a perspective view showing another example of a charging stand for placing a medical device according to at least one of the embodiments of the present invention. FIG. 11 is a plan view showing another example of a charging stand for placing a medical device according to at least one of the embodiments of the present invention.

Below, examples of medical devices according to embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an external view showing an external example of a configuration of a medical device corresponding to at least one of the embodiments of the present invention. As shown in FIG. 1, the medical device according to the embodiment of the present invention comprises a medical device main body 100, a battery pack (first battery pack) 200, and a charging stand 400. In addition, a spare battery pack (second battery pack) 300 may be further comprised. The medical device according to the embodiment of the present invention is characterized in that it employs a battery pack as a power source, and that the battery pack can be charged by contactless charging. In the following description, the reference numeral 100 may be used to refer to the entire medical device.

The medical device according to the embodiment of the present invention may be any medical device that requires power supply from a battery. In the following, as an example of the medical device, a device called a slit lamp is used to irradiate a slit light onto an eye (hereinafter referred to as the "examined eye"), which is an example of a subject, and to examine the cornea, crystalline lens, etc. of the examined eye by observing the scattered light generated by scattering in the examined eye. Other examples of the medical device include ophthalmic devices such as a tonometer, a fundus camera, and an auto reflex keratometer, and a thermometer. In the following, an example is described in which the medical device is an examination device using a slit lamp. In the following, the configuration of an examination device using a slit lamp, which is an example of a medical device according to the embodiment of the present invention, is described.

Figures 1 to 3 are external views showing an example of the external configuration of a medical device 100 corresponding to at least one of the embodiments of the present invention. The medical device 100 is a device for examining a subject's eye by operating it while holding it in one hand. As shown in Figures 1 to 3, the medical device 100 includes an irradiation unit 10, an observation unit 20, a grip unit 30, a finger hook unit 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 unit 90.

The irradiation unit 10 has a function of irradiating the test eye with irradiation light. In this example, the irradiation unit 10 has a function of irradiating the test eye with slit light or spot light as irradiation light. The irradiation unit 10 is composed of an irradiation tube 11, an irradiation port 12, a disk operation unit 13, a swing unit 14, and a separate light source installation unit 15. The irradiation tube 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 tube 11 has a light source, a condenser lens, a spot disk, a slit disk, and a projector lens inside. An example of a light source is an LED. In the irradiation tube 11, light emitted from the light source is condensed by a condenser lens and then passes through the slit disk to generate slit light or spot light. The slit light or spot light is incident on the irradiation port 12. The irradiation port 12 is composed of a projector prism arranged inside. The slit light or spot light incident on the projector prism changes direction and is irradiated toward the test eye outside the device. The disk operation unit 13 is a dial that allows an operator to rotate the spot disk and the slit disk to select the length and width of the slit light to be irradiated and the diameter of the spot light. The swing unit 14 is a plate-shaped member that is provided at one end and the lower part of the irradiation tube 11, and the other end, which is located a predetermined distance away from the irradiation tube 11, is connected to the irradiation angle adjustment unit 80 described later. A marker for indicating the rotation angle of the irradiation unit 10 is provided at the part of the swing unit 14 that contacts the outer periphery of the irradiation angle adjustment unit 80.

The separate light source installation section 15 has a function of irradiating the subject's eye with light for fluorescent observation illumination and background illumination, and is provided separately from the irradiation port 12. The separate light source installation section 15 is composed of a fluorescent observation illumination light source installation section and a background illumination light source installation section. For example, a blue LED is installed as a light source in the fluorescent observation illumination light source installation section, and a white LED is installed as a light source in the background illumination light source installation section. The separate light source installation section 15 may be provided with only one of the fluorescent observation illumination light source installation section and the background illumination light source installation section. Conventionally, light for fluorescent observation illumination and background illumination was irradiated from the same irradiation port as slit light and spot light, but it was necessary to switch between the slit light and spot light and the fluorescent observation illumination and background illumination, and simultaneous irradiation was not possible. However, since a light source is directly installed in the separate light source installation section 15 provided in the medical device 100, light for fluorescent observation illumination and background illumination can also be irradiated when irradiating slit light and spot light. As a result, it can be used for, for example, photographing to explain the irradiation state of the slit light to the subject (for example, photographing using background illumination of the anterior eye of the subject). In addition, since the light for the fluorescent observation illumination and the background illumination is generated on a different optical path from the optical path of the slit light and the spot light, the irradiation range is not limited by the size of the slit turret, and it is possible to install the light source so that the light for the fluorescent observation illumination and the background illumination hits a wider range than when they are generated on the same optical path. In addition, as shown in FIG. 2, the separate light source installation unit 15 is provided so that the light irradiated from the irradiation port 12 and the light irradiated from the separate light source installation unit 15 always face in approximately the same direction. For example, the separate light source installation unit 15 rotates in the same manner as the rotation of the irradiation port 12. With such a configuration, it is not necessary to separately adjust the direction of the fluorescent observation illumination and the background illumination when adjusting the irradiation direction of the slit light and the spot light, and as a result, it is possible to improve the ease of handling of the medical device 100.

The observation unit 20 has a function of observing the subject's eye with the irradiation light irradiated from the irradiation unit 10. In this example, the observation unit 20 includes an observation housing 21, a right eye eyepiece 22, a left eye eyepiece 23, and a variable magnification lever 24. The observation housing 21, the right eye eyepiece 22, and the left eye eyepiece 23 are internally configured with a known observation optical system described in the above-mentioned Patent Document 1. 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 configured inside the observation housing 21 and the right eye eyepiece 22. The observation optical system for the left eye is configured inside the observation housing 21 and the left eye eyepiece 23. For example, the observation optical system is composed of at least an objective lens, an eyepiece prism, a reticle lens, and an eyepiece. The slit light from the irradiation unit 10 is scattered by the subject's eye and enters the objective lens as scattered light. The incident scattered light passes through the eyepiece prism, the reticle lens, and the eyepiece to become light that can be observed by the operator. The magnification change lever 24 is a lever that can change the observation magnification of the eye to be examined by moving the objective lens in the forward and backward directions by moving it in the left and right directions.

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

The finger hook 40a is provided on the grip section 30 so that it can be hooked by any of the fingers on the index finger side when the operator holds the grip section 30 with one hand. Here, the index finger side refers to the side of the side of the grip section 30 that the index finger can contact when the operator holds the grip section 30. The fingers on the index finger side are at least any of the index finger, middle finger, ring finger, and little finger. In addition, the finger hook 40a hooking the finger means that the finger is in a state in which the finger is subjected to the load of the finger hook 40a. The shape of the finger hook 40a is not particularly limited as long as it can be hooked by any of the fingers on the index finger side. In the example shown in Figures 1 to 3, the shape of the finger hook 40a is a brim-like shape that protrudes from the side of the grip section 30. By providing the finger hook 40a on the grip portion 30, the operator can hook the finger hook 40a onto any of the fingers located on the index finger side to grip the grip portion 30. Therefore, it becomes possible for the operator to stably perform an inspection operation at the ideal position of the hand gripping the grip portion 30, which is determined by the finger hook 40a. Examples of the shape of the finger hook will be described later.

The index finger side operation unit 50 is used for the operation of the test, and is provided at a position within the reach of the finger on the index finger side, the position of which is determined by the finger hook portion 40a when the operator holds the grip portion 30 with one hand, which is assumed to be the finger to be used for the operation. The finger assumed to be the finger to be used for the operation is not particularly limited as long as it is any of the fingers on the index finger side, but a finger other than the finger hooked by the finger hook portion 40a is preferable. In this example, the index finger is assumed to be the finger to be used for the operation. In addition, the position within the reach of the finger refers to a position that can be reached by moving the finger. An example of a position within the reach of the finger assumed to be the finger to be used for the operation is the position of the grip portion 30 facing the finger assumed to be the finger to be used for the operation when the operator holds the grip portion 30 with one hand. The index finger side operation unit 50 is, for example, a button or a switch. In this example, the index finger side operation unit 50 is a switch that, while being pressed, causes a light source disposed in the irradiation tube 11 of the irradiation unit 10 to emit light and emits light from the irradiation port 12 .

The index finger side operation unit 50 may be located within the reach of the operating finger, assuming that the operating finger is closer to the thumb than the finger receiving the load from the finger hook unit 40a. For example, if the finger receiving the load in the reference state is the middle finger, the finger closer to the thumb than the finger receiving the load is the index finger. This configuration makes it possible to perform the test operation more stably with a finger that is relatively less affected by the load from the finger hook unit 40a.

The thumb side operation unit 60a is used for the operation of the examination of the subject's eye, and is provided at a position within the reach of the thumb, whose position is determined by the finger hook portion 40a when the operator holds the grip portion 30 with one hand. The thumb side operation unit 60a may be provided with multiple operation points. The operation points are provided with operation members such as buttons, various switches, and dials for inputting operations related to the examination of the subject's eye. In this example, the operation points of the thumb side operation unit 60a are provided with operation buttons 61a to 63a and an operation dial 64 as operation members. The operation buttons 61a to 63a are assigned various functions related to the examination, such as turning on and off the fluorescent observation illumination and background illumination. The operation dial 64 is assigned a function of adjusting the light amount of the slit light irradiated from the irradiation port 12 of the irradiation unit 10, for example. The operation locations of the multiple operation buttons included in the thumb side operation unit 60a are not particularly limited as long as they are within the range reachable by the thumb, whose position is determined by the finger hook portion 40a when the operator holds the grip unit 30 with one hand. Examples of the shapes, sizes, arrangements, etc. of the multiple operation members included in the thumb side operation unit 60a will be described later.

The base portion 70 is a plate-shaped member having one end portion attached to the lower portion of the grip portion 30. The other end portion of the base portion 70 is provided with the irradiation angle adjustment portion 80 described below.

The irradiation angle adjustment unit 80 is a member that adjusts the irradiation angle of the irradiation light by rotating the irradiation unit 10 with the rotation axis as a reference. In this example, the irradiation angle adjustment unit 80 is fixedly attached to the other end portion of the base unit 70. Also, 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 tube 11, and the upper surface is exposed. In other words, 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 the irradiation angle adjustment unit 80 as a reference. The irradiation angle adjustment unit 80 is, for example, composed of a bearing.

The scale unit 90 has a scale indicating the rotation angle on the upper surface of the rotating shaft. Specifically, the scale unit 90 has a scale corresponding to the irradiation angle of the irradiation light irradiated by the irradiation unit 10, arranged in an arc shape on the upper surface of the rotating shaft. In this example, the scale unit 90 is arranged as a mark indicating the rotation angle based on the irradiation angle adjustment unit 80 of the swing unit 14, arranged in an arc shape on the upper surface of the irradiation angle adjustment unit 80 fitted into the swing unit 14. The scale unit 90 will be described in detail later.

Figure 4 is an external view showing an example of a battery pack insertion location on the bottom of the main body of a medical device corresponding to at least one of the embodiments of the present invention. As shown in Figure 4, a mounting recess 110 for mounting the battery pack 200 (300) is formed on the bottom of the medical device main body 100. On the inside of this mounting recess 110, there are provided a main body side terminal portion 120 for electrically connecting with the battery pack 200 (300), a protective protrusion portion 130 for protecting the main body side terminal portion 120, and a locking recess 140 for fixing the battery pack 200 (300).

Figure 5 is a perspective view showing an example of a battery pack used in a medical device corresponding to at least one of the embodiments of the present invention. As shown in this figure, the battery pack 200 includes a battery side terminal portion 210 for electrically connecting with the main body side terminal portion 120, a protective recess 220 for receiving the protective protrusion 130 when attached to the mounting recess 110, a locking protrusion portion 230 for locking by fitting into the locking recess 140, and a locking spring member 240 for attaching and detaching to the mounting recess 110. The locking spring member 240 locks and releases the battery pack 200 by elastic force against a groove (not shown) provided in the mounting recess 110. In addition, it is preferable that the battery pack 200 has at least one shape characteristic of being asymmetrical up and down, asymmetrical left and right, and asymmetrical front and back. By providing the battery pack 200 with the shape characteristics of being asymmetrical up and down, asymmetrical left and right, and asymmetrical front and back, it is possible to prevent erroneous insertion into the mounting recess 110. The battery pack (second battery pack) 300 shown in FIG. 1 has the same structure as the battery pack (first battery pack) 200, except that it is a spare, and therefore a description thereof will be omitted.

Figure 6 is a perspective view showing an example of a charging stand on which a medical device corresponding to at least one of the embodiments of the present invention is placed. As shown in this figure, the charging stand 400 is provided with a placement surface 410 for placing the medical device main body 100, a main body receiving part 420 for fixing the position of the medical device main body on the placement surface by fitting a part of the medical device main body, and a battery placement position display means 430 for indicating the position of the battery pack 200 (300) in a state in which the medical device main body 100 is fitted to the main body receiving part 420. Although not shown in the figure, the charging stand 400 is provided with a power cord for drawing power from a commercial power source. In addition, an AC adapter 440 for converting AC voltage from a commercial power source to DC voltage may be provided inside the charging stand 400, or may be provided between the commercial power outlet and the charging stand 400. The main body receiving part 420 plays a role of fixing the medical device main body 100 itself and a role of accurately positioning the medical device main body. The battery placement position indicator 430 may be any means capable of indicating the placement position of the battery pack 200 (300), but in the example of Fig. 6, an indicator line indicating the placement position is displayed on the placement surface 410. As another example of the battery placement position indicator 430, it is possible to form only the place where the battery pack 200 (300) is placed one step lower to form a recess. This battery placement position indicator 430 effectively functions as a configuration for accurately identifying the placement location when only the battery pack 200 (300) is charged separately from the medical device main body 100, as shown in the lower part of Fig. 6.

Figure 7 is a block diagram showing an example of a contactless charging method applied to a medical device corresponding to at least one of the embodiments of the present invention. As shown in Figure 7, the charging stand 400 includes an AC adapter 440 and a power transmission coil 450 for transmitting power for contactless charging. The battery pack 200 (300) includes a power receiving coil 250 that receives the magnetic field (magnetic flux) generated by the power transmission coil 450 and converts it into a current, a charging control IC 260 that controls charging based on the current converted by the power receiving coil 250, a secondary battery 270 to be charged, and a battery side terminal unit 210 for electrically connecting to the main body. The medical device main body 100 supplies power from the battery pack 200 (300) to a required location via the main body side terminal unit 120 that is electrically connected to the battery side terminal unit 210. As shown in FIG. 7, when the medical device main body 100 or the battery pack 200 (300) alone is correctly positioned and placed on the charging stand 400, the transmitting coil 450 and the receiving coil 250 are configured to face each other so as to maximize charging efficiency.

As described above, the medical device of the present invention comprises a medical device main body and a first battery pack for supplying power that is detachably attached to the medical device main body. The first battery pack has a receiving coil for receiving a magnetic field generated by a transmitting coil provided on the power transmitting side, and a secondary battery that is charged based on the power received by the receiving coil, and is configured to be capable of contactless charging even when detached from the medical device main body, making charging easy by using contactless charging. Furthermore, a receiving coil is provided inside the battery pack to enable contactless charging of the battery pack alone, making it possible to charge in two ways: by placing the medical device 100 with the battery pack attached on the charging stand and charging, or by removing the battery pack and charging the battery pack alone. In addition, since the battery pack can be charged contactlessly by itself, if an identical spare battery pack is prepared, one battery pack (first battery pack) can be attached to the medical device main body 100 and the other battery pack (second battery pack) can be charged while the medical device is being used. Therefore, even if one battery pack (first battery pack) runs out of charge, it is possible to continue using the medical device by simply replacing it with the other battery pack (second battery pack).

In the above embodiment, the spare second battery pack has been described as having the same configuration as the first battery pack 200, but the spare second battery pack may use a dry battery. FIG. 8 is a perspective view showing an example of a battery pack used in a medical device corresponding to at least one of the embodiments of the present invention. The battery pack 500 can be attached to the medical device main body 100 in the same manner as the battery pack 200 by sharing the shape and terminal structure, but as shown in FIG. 8, it has a portion for attaching a dry battery 510 instead of a secondary battery, and is configured to supply power from the dry battery 510. In this way, by using the spare battery pack 500 using the dry battery 510, when the battery pack 200 runs out of charge, the medical device 100 can be used using the dry battery 510, and the battery pack 200 can be charged by itself during that time.

Figure 9 is a perspective view showing another example of a charging stand for placing a medical device corresponding to at least one of the embodiments of the present invention. Also, Figure 10 is a plan view showing another example of a charging stand for placing a medical device corresponding to at least one of the embodiments of the present invention. Based on Figures 9 and 10, the configuration of another example of a charging stand 600 will be described.

As shown in Figures 9 and 10, the charging stand 600 includes a horizontal mounting surface 610 for mounting the medical device main body 100, a grip fixing portion 620 (main body fixing means) for fixing the grip portion 30 when the medical device main body 100 is mounted, a battery guide line 630 (battery mounting position indication means) indicating the appropriate mounting position when charging the battery pack 200 (300) alone, and a main body guide line 640 (main body mounting position determination means) indicating the appropriate mounting position when charging the medical device main body 100.

The grip fixing portion (main body fixing means) 620 is formed in a bank shape higher than the placement surface 610, and the bank-shaped portion surrounds the lower end of the grip portion 30 and the base portion 70, thereby determining the placement position of the medical device main body 100. As shown in FIG. 2, the medical device main body 100 in this example determines the positional relationship between the grip portion 30 and the base portion 70 so that the grip end 31, which is the lower end of the grip portion 30, protrudes from the base portion rear end 71 of the base portion 70 (it can also be said that the base portion rear end 71 is set back from the grip end 31). The grip fixing portion 620 is formed so that it contacts the grip end 31 and the base portion rear end 71 when the medical device main body 100 is placed in an appropriate position. Therefore, in this example, the grip fixing portion 620 is formed in a recessed state as a grip end accommodating portion 622 in the portion corresponding to the grip end 31. An indicator 621 for indicating the charging status of the battery pack 200 (300) may be provided at a certain position (e.g., the center) of the grip fixing part 620. In this case, the storage position of the grip end 31 becomes easier to see, which helps to smoothly place the medical device 100. In the charging stand 600 shown in Figs. 9 and 10, the grip end 31 portion is fixed as the main body fixing means, but the main body fixing means may be any means capable of fixing at least a part of the medical device main body 100.

The battery guide line 630 (battery placement position indicator) indicates the placement position of the battery pack 200 (300) such that the positions of the power transmission coil of the charging stand 620 and the power receiving coil of the battery pack 200 (300) coincide (the positional relationship provides the highest charging efficiency). By providing this battery guide line 630, the user can place the battery pack 200 (300) in the optimal position on the placement surface 610 even in a situation where the battery pack can be placed freely on the placement surface 610.

The guide line 640 for the main body (main body placement position determination means) indicates the placement position of the medical device main body 100 such that the positions of the power transmission coil of the charging stand 620 and the power receiving coil of the battery pack 200 (300) connected to the medical device main body 100 coincide (the positional relationship is such that charging efficiency is highest). By providing this guide line 640 for the main body, the user can place the medical device main body 100 in the optimal position on the placement surface 610. Note that the position of the battery pack 200 (300) connected to the medical device main body 100 at the optimal placement position of the medical device main body 100 indicated by the guide line 640 for the main body and the position of the battery pack 200 (300) connected to the medical device main body 100 at the optimal placement position of the battery pack 200 (300) indicated by the battery guide line 630 are the same position.

In this way, the charging stand 600 shown in Figures 9 and 10 can suppress a decrease in charging efficiency caused by misalignment of the receiving coil relative to the transmitting coil.

100 Medical device body (medical device)
LIST OF SYMBOLS 10 Irradiation section 11 Irradiation tube 12 Irradiation port 13 Disk operation section 14 Swing section 15 Marker 20 Observation section 21 Observation housing 22 Right eye observation section 23 Left eye observation section 24 Magnification change lever 30 Grip section 31 Grip end 40a-40c Finger hook section 50 Index finger side operation section 60a-60e Thumb side operation section 70 Base section 71 Rear end of base section 80 Irradiation angle adjustment section 90 Scale section 110 Mounting recess 120 Body side terminal section 130 Protective protrusion 140 Locking recess 200 Battery pack 210 Battery side terminal section 220 Protective recess 230 Locking protrusion 240 Locking spring member 250 Receiving coil 260 Charging control IC
270 Secondary battery 300 Battery pack 400 Charging stand 410 Mounting surface 420 Main body receiving section 430 Battery mounting position indicator 440 AC adapter 450 Power transmission coil 500 Battery pack 510 Dry battery 600 Charging stand 610 Mounting surface 620 Grip fixing section 621 Indicator 622 Grip end storage section 630 Battery guide wire 640 Main body guide wire

Claims (5)

The medical device itself,
A first battery pack for supplying power, the first battery pack being detachably provided to the medical device body;
a charging stand configured to charge the first battery pack attached to the medical device body,
the first battery pack includes a power receiving coil for receiving a magnetic field generated by a power transmitting coil provided on a power transmitting side, and a secondary battery that is charged based on the power received by the power receiving coil, and is configured to be capable of being contactlessly charged even in a state where the first battery pack is detached from the medical device body;
The charging stand includes:
a body placement position determination means for assisting in determining an appropriate placement position for the medical device body when charging the first battery pack attached to the medical device body;
a battery placement position display means for indicating the position of the first battery pack attached to the medical device body when the medical device body is placed based on the body placement position determination means. The medical device according to claim 1 , wherein the charging stand is configured to enable charging of the first battery pack alone by placing the first battery pack alone on the charging stand based on the battery placement position display means. The medical device according to claim 1 , wherein the charging stand further comprises the transmitting coil arranged so as to coincide with a position of a receiving coil of the first battery pack placed based on the battery placement position display means. The medical device according to claim 3, characterized in that the main body placement position determination means of the charging stand has a main body fixing means that fixes at least a part of the medical device main body so that the positions of the power transmitting coil and the power receiving coil coincide when the medical device main body is placed on the placement surface of the charging stand . 5. The medical device according to claim 4 , wherein the main body fixing means of the charging stand has an indicator that shows a charging state of the first battery pack placed on the placement surface.

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