MEDICAL DEVICE AND LIGHT AMOUNT ADJUSTING DEVICE

A medical device includes an extracorporeal unit including a power transmitting unit that transmits electric power from outside of a living body into the living body in a non-contact manner, and a medical instrument embedded in the living body. The medical instrument includes a power receiving unit that receives the electric power transmitted from the power transmitting unit, a soft portion through which an injection needle is inserted, and a plurality of light emitting units that are provided along an outer edge of the soft portion and are each configured to emit light using the electric power received by the power receiving unit. A light amount adjusting unit that adjusts a light amount of a light-irradiated region including one or more light-irradiated portions to be projected on a body surface from the plurality of light emitting units.

TECHNICAL FIELD

The present disclosure relates to a medical device and a light amount adjusting device.

BACKGROUND ART

In a medical device, in order to inject a medicinal solution into a living body, a body-implantable medical instrument having a main body portion embedded in the living body is used. This medical instrument reduces the burden on a patient who has to be injected frequently for the injection of the medicinal solution. The medical instrument includes a soft portion through which an injection needle is inserted into the main body portion. The soft portion is made of, for example, silicone rubber. Then, in the medical instrument, the medicinal solution is injected into a medicinal solution container through the soft portion. The medicinal solution is transported to the blood vessel through a catheter.

In such a medical instrument, since the main body portion of the device is embedded in the living body, it is difficult to identify the position of the soft portion by visual recognition from outside of the living body.

For example, Patent Document 1 discloses a medical instrument including a light emitting unit. With such a medical instrument, there is a possibility that the position of the soft portion can be confirmed from outside the living body by the light reaching the skin surface which is the body surface.

PRIOR ART DOCUMENTS

Patent Documents

DISCLOSURE OF THE INVENTION

Problems to be Solved by the Invention

However, the light emitted from the light emitting unit is absorbed or scattered by the living body tissue. With respect to the light-irradiated portion which is projected on the body surface when the light from the light emitting unit passes through the living body tissue and then reaches the body surface, a decrease in the amount of light due to the living body tissue and an enlargement in the area of the light-irradiated portion occur. Due to the above, a plurality of rays of light emitted from a plurality of light emitting units arranged around the soft portion may overlap with each other, and a single light-irradiated portion may be projected on the body surface instead of a plurality of light-irradiated portions. Therefore, it is difficult to accurately confirm the position of the soft portion in the living body based on the light-irradiated portion on the body surface.

Furthermore, the appearance of the light projected on the body surface varies depending on the state of the patient such as sex and the thickness of the subcutaneous tissue, the environment such as the brightness of the operating room and the treatment room, the state of the user such as the physical condition and the color vision characteristic of the user, and the like.

It is an object of the present disclosure to provide a medical device and a light amount adjusting device which make it possible to easily confirm the position of a soft portion of a medical instrument embedded in a living body from outside of the living body with high accuracy.

Means for Solving the Problems

[1] A medical device including: an extracorporeal unit including a power transmitting unit that transmits electric power from outside of a living body into the living body in a non-contact manner; a medical instrument embedded in the living body, the medical instrument including a power receiving unit that receives the electric power transmitted from the power transmitting unit, a soft portion through which an injection needle is inserted, and a plurality of light emitting units that are provided along an outer edge of the soft portion and are each configured to emit light using the electric power received by the power receiving unit; and a light amount adjusting unit that adjusts a light amount of a light-irradiated region including one or more light-irradiated portions to be projected on a body surface from the plurality of light emitting units.[2] The medical device according to [1], in which the light amount adjusting unit adjusts a light amount of the light-irradiated region so that a center of the light-irradiated region is darkened.[3] The medical device according to [1] or [2], in which the light amount adjusting unit performs adjusting by weakening the light amount of the light-irradiated region.[4] The medical device according to any one of [1] to [3], in which the light amount adjusting unit simultaneously adjusts light amounts of the plurality of light emitting units.[5] The medical device according to any one of [1] to [4], further including a stop unit that stops the light amount adjusting unit.[6] A light amount adjusting device including: an extracorporeal unit including a power transmitting unit that transmits electric power from outside of a living body to a medical instrument embedded in the living body in a non-contact manner, the medical instrument including a plurality of light emitting units that are each configured to emit light, and a light amount adjusting unit that adjusts a light amount of a light-irradiated region including one or more light-irradiated portions to be projected on a body surface from the plurality of light emitting units.

Effects of the Invention

According to the present disclosure, it is possible to provide a medical device and a light amount adjusting device which make it possible to easily confirm the position of a soft portion of a medical instrument embedded in a living body from outside of the living body with high accuracy.

PREFERRED MODE FOR CARRYING OUT THE INVENTION

Medical devices1,2,3,4,5, and6of the embodiments each include an extracorporeal unit10including a power transmitting unit11for transmitting electric power from outside of a living body100into the living body100in a non-contact manner, a medical instrument20embedded in the living body100, the medical instrument20including a power receiving unit25and25afor receiving the electric power transmitted from the power transmitting unit11, a soft portion23through which an injection needle200is inserted, and a plurality of light emitting units26that are provided along an outer edge of the soft portion23and are each configured to emit light using the electric power received by the power receiving unit25and25a, and a light amount adjusting unit30and30afor adjusting a light amount of a light-irradiated region including one or more light-irradiated portions102to be projected on a body surface101from the plurality of light emitting units26.

Light amount adjusting devices41,42,43,44,45and46of the embodiments each include an extracorporeal unit10including a power transmitting unit11for transmitting electric power from outside of the living body100to a medical instrument20embedded in the living body100in a non-contact manner, the medical instrument20including a plurality of light emitting units26that are each configured to emit light, and a light amount adjusting unit30and30afor adjusting a light amount of a light-irradiated region including one or more light-irradiated portions102to be projected on a body surface101from the plurality of light emitting units26.

First Embodiment

FIG.1is a schematic diagram showing an example of a medical device and a light amount adjusting device according to the first embodiment.FIG.2is a block diagram showing a functional configuration of the medical device and the light amount adjusting device.FIG.3is a schematic diagram showing an example of an extracorporeal unit constituting the medical device.FIG.4is a schematic diagram showing an example of a medical instrument constituting the medical device. As shown inFIGS.1to4, the medical device1includes the extracorporeal unit10, the medical instrument20, and the light amount adjusting unit30.

As shown inFIG.1, the extracorporeal unit10detects the soft portion23of the medical instrument20for use in a living body100such as a patient or a subject from outside of the living body100. The extracorporeal unit10includes the power transmitting unit11. The power transmitting unit11of the extracorporeal unit10transmits electric power from outside of the living body100into the living body100in a non-contact manner.

As shown inFIG.1, the medical instrument20is embedded in the living body100. The medical instrument20is, for example, referred to as a subcutaneous implantable port (CV port).

As shown inFIGS.1to2, and4, the medical instrument20includes the main body portion21, the medicinal solution container22, the soft portion23, a catheter24, the power receiving unit25, and the light emitting unit26.

The main body portion21constituting the medical instrument20is a housing made of epoxy resin or the like. The main body portion21includes the medicinal solution container22, the soft portion23, the catheter24, the power receiving unit25and the light emitting unit26.

The medicinal solution container22is a chamber for temporarily storing the medicinal solution. The medicinal solution container22has a circular opening22atoward the outside of the living body.

The soft portion23is referred to as a septum, and closes the opening22aof the medicinal solution container22. The soft portion23is a soft lid (silicone diaphragm) made of, for example, silicone rubber, and is exposed from the main body portion21. The soft portion23is a portion through which the injection needle200for injecting a medicinal solution (transfusion) punctured from the body surface101of the living body100is inserted. For example, the soft portion23has a cylindrical shape.

One end of the catheter24communicates with the medicinal solution container22, and the other end of the catheter24communicates with a blood vessel (not shown). The catheter24transports the medicinal solution in the medicinal solution container22to a blood vessel or the like.

The power receiving unit25receives the electric power transmitted from the power transmitting unit11of the extracorporeal unit10. For example, as shown inFIGS.1and4, the power receiving unit25includes a coil with annular shape wound a plurality of times around an end face of the medicinal solution container22, the end face being located toward the outside of the living body, and the power receiving unit25is provided around the soft portion23. The coil constituting the power receiving unit25may be made of a wire material made of a copper-based material such as pure copper in order to reduce size and increase power supply, or may be made of a wire material made of an aluminum-based material such as pure aluminum in order to reduce weight. For example, the power receiving unit25is integrated with the main body portion21by molding or the like.

The plurality of light emitting units26are disposed along the outer edge of the soft portion23, and emit light using the electric power received by the power receiving unit25by way of non-contact power supply from the power transmitting unit11of the extracorporeal unit10. The light irradiated from the plurality of light emitting units26passes through the living body tissue to reach the body surface101, and projects a light-irradiated region including one or more light-irradiated portions102on the body surface101. The amount of light in the light-irradiated portion102is not uniform. For example, the amount of light in the light-irradiated portion102is the largest at the center of the light-irradiated portion102, and decreases as the distance from the center increases. In addition, the amount of light in the light-irradiated region is also not uniform.

The plurality of light emitting units26are arranged in an annular manner around the soft portion23at predetermined intervals. Here, the four light emitting units26are arranged in an annular manner around the soft portion23at equal intervals. The arrangement conditions of the plurality of light emitting units26such as the number and the position of the plurality of light emitting units26is appropriately set.

The plurality of light emitting units26emit light according to the magnitude of the electric power received by the power receiving unit25. As the electric power received by the power receiving unit25is larger, the amount of the irradiation light irradiated from the light emitting unit26is larger. The light amounts of the light emitting units26are the same, for example. The plurality of light emitting units26are preferably LEDs having high directivity, and among them, a red LED that emits light of the red wavelength band is more preferable from the viewpoint of good transmission in the living body100.

As shown inFIG.1, one end of a plate-shaped power transmitting unit11is coupled with a housing10aof the extracorporeal unit10. At the other end side of the power transmitting unit11, a through hole11apenetrating from one main surface to the other main surface of the power transmitting unit11is provided. The size of the through hole11ais larger than the outer dimension of the injection needle200. The through hole11ahas, for example, a circular shape.

The power transmitting unit11includes a power transmitting coil17therein. The power transmitting coil17provided inside the power transmitting unit11is wound a plurality of times around the outside of the through hole11ain an annular shape, and is connected to the power supply unit12shown inFIG.2.

As shown inFIG.2, the housing10aof the extracorporeal unit10houses the power supply unit12, an input unit13, a recording unit14, and a control unit15(an extracorporeal unit-side control unit).

The power supply unit12of the extracorporeal unit10supplies electric power to the power transmitting unit11under the control of the control unit15. The power supply unit12includes a battery, a booster circuit, and the like.

The input unit13is operated by a user's input operation. For example, the input unit13includes buttons, switches, and a touch screen. The user may be a doctor, a nurse, a caregiver, a patient, a subject, or the like.

The recording unit14records various programs and information executed by the extracorporeal unit10. The recording unit14includes volatile memory, non-volatile memory, and the like.

The control unit15controls the power supply unit12and the recording unit14of the extracorporeal unit10. When the input unit13is pressed, the control unit15controls the power supply unit12to supply the electric power from the power supply unit12to the power transmitting unit11. The control unit15includes memory and a processor having hardware such as a CPU (Central Processing Unit).

The power transmitting unit11transmits the electric power supplied from the power supply unit12to the power receiving unit25in the living body100in a non-contact manner. For example, as shown inFIG.1, the power transmitting coil17in the power transmitting unit11connected to the power supply unit12transmits the electric power supplied from the power supply unit12to the power receiving unit25of the medical instrument20in a non-contact manner. Furthermore, for example, even when the power transmitting unit11and the power receiving unit25are separated by several hundreds of millimeters, the electric power transmitted from the power transmitting unit11to the power receiving unit25allows the light emitting unit26to emit light.

The light amount adjusting unit30of the medical device1adjusts the light amount of the light-irradiated region including one or more light-irradiated portions102projected on the body surface101from the plurality of light emitting units26. The light amount adjusting unit30is located outside the living body100. As shown inFIG.1, the light amount adjusting unit30is integrated with the housing10aof the extracorporeal unit10. Alternatively, the light amount adjusting unit30may be separated from the extracorporeal unit10.

The light amount adjusting unit30is operated by a user. For example, the light amount adjusting unit30includes a button, a switch, a touch screen, and the like.

When the user adjusts the light amount adjusting unit30, the control unit15controls the power supply unit12to adjust the magnitude of the electric power supplied from the power supply unit12to the power transmitting unit11. When the magnitude of the electric power supplied to the power transmitting unit11is adjusted, the magnitude of the electric power supplied to the plurality of light emitting units26via the power receiving unit25is adjusted, so that the light amount adjusting unit30can simultaneously adjust the amount of light of the plurality of light emitting units26, in this case, the amount of light of all the light emitting units26. In this way, since the light amount adjusting unit30changes the magnitude of the electric power supplied to the light emitting unit26, it is possible for the medical device1to adjust the light-irradiated region projected on the body surface101from the light emitting unit26.

FIGS.5and6are schematic views each showing a light-irradiated region projected on the body surface101. For example, as shown inFIG.5, when a plurality of light-irradiated portions102are projected on the body surface101, the puncture target area P that is located at the center of the light-irradiated region and where the injection needle200punctures on the body surface101is an area where the light of the light emitting units26is not reached, that is, an area where the light of the light emitting units26is not irradiated. In addition, as shown inFIG.6, when one light-irradiated portion102is projected on the body surface101, the puncture target area P in the light-irradiated region is an area where the light of the light emitting unit26is irradiated. As shown inFIGS.5and6, the state in which the plurality of light-irradiated portions102are projected on the body surface101and the state in which one light-irradiated portion102is projected on the body surface101depend on the amount of the light irradiated from the light emitting unit26.

FIGS.7to9are schematic views each showing the state of the light-irradiated portions102and the light-irradiated region projected on the body surface101projected by the medical instrument20including the two light emitting units26, and the relationship of the light amounts of the light-irradiated portions102and the light-irradiated region on the body surface101.FIG.7shows a state in which the amount of light on the body surface101is large,FIG.8shows a state in which the amount of light is smaller than that inFIG.7, andFIG.9shows a state in which the amount of light is smaller than that inFIG.8. In each ofFIGS.7to9, an example of a medical instrument including two light emitting units will be described in order to explain in a simple manner the state of the light-irradiated portions102and the light-irradiated region on the body surface101, and the light amounts of the light-irradiated portions102and the light-irradiated region on the body surface101.

As shown inFIG.7, in a state where the amount of light on the body surface101is large, one light-irradiated portion102as shown inFIG.6is projected on the body surface101. In this state, at the puncture target area P that indicates the position of the center of the soft portion23and is located in the light-irradiated region, the light L irradiated from the plurality of light emitting units26overlap. When the amount of light is gradually reduced from the state shown inFIG.7, the amount of light of the light-irradiated portions102and the amount of light of the puncture target area P decrease while maintaining the state in which the light L irradiated from the plurality of light emitting units26overlap at the puncture target area P, as shown inFIG.8. As shown inFIG.9, when the amount of light is further reduced, the plurality of light-irradiated portions102as shown inFIG.5are projected on the body surface101. In this state, the light L irradiated from the plurality of light emitting units26does not reach the puncture target area P.

The user can adjust the light amount adjusting unit30while checking the state of the light-irradiated region projected on the body surface101, and can adjust the state of the light-irradiated region by simultaneously adjusting the light amounts of all the light emitting units26. Then, the user can check the soft portion23of the medical instrument20by adjusting the state of the light-irradiated region, in consideration of the light amounts of the light-irradiated portions102and the light-irradiated region on the body surface101, the state of the puncture target area P indicating the position of the center of the soft portion23, and the like.

Next, a procedure for checking the position of the soft portion23of the medical instrument20embedded in the living body100will be described.

The user presses the input unit13of the extracorporeal unit10to supply the electric power from the power supply unit12to the power transmitting unit11. In this state, the user scans the extracorporeal unit10while approaching the body surface101. When the power transmitting unit11of the extracorporeal unit10approaches the power receiving unit25of the medical instrument20, the power receiving unit25receives the electric power from the power transmitting unit11in a non-contact manner. The plurality of light emitting units26emit light by the electric power received by the power receiving unit25. The light amount of the plurality of light emitting units26depends on the magnitude of the electric power received by the power receiving unit25. The user can adjust the magnitude of the electric power received by the power receiving unit25and adjust the state of the light-irradiated region by adjusting the light amount adjusting unit30while checking the state of the light-irradiated region projected on the body surface101by the plurality of light emitting units26. In this way, it is possible for the user to easily check the position of the soft portion23of the medical instrument20embedded in the living body100from outside of the living body100with high accuracy by adjusting the state of the light-irradiated region using the light amount adjusting unit30. Furthermore, since the light amounts of all the light emitting units26can be adjusted at the same time, it is possible to easily adjust the state of the light-irradiated region.

After checking the position of the soft portion23in the living body100from outside of the living body100, the user inserts the injection needle200into the through hole11aof the power transmitting unit11and then punctures the injection needle200at the puncture target area P of the body surface101to inserts the injection needle200into the soft portion23. In this way, since the injection needle200can be easily inserted into the soft portion23which is easily confirmed from outside of the living body100with high accuracy, it is possible to easily inject the medicinal solution from the injection needle200into the medicinal solution container22.

The light amount adjusting unit30preferably adjusts the light amount of the light-irradiated region so that the center of the light-irradiated region is darkened. As described above, the center of the light-irradiated region projected on the body surface101is the puncture target area P.

As shown inFIGS.7and8, when the light amount of the light emitting unit26is large, the contrast of light and darkness may be low at the puncture target area P indicating the position of the center of the soft portion23and in the portion of the light-irradiated portion102excluding the puncture target area P (hereinafter, also referred to as a portion of the light-irradiated portion102other than the puncture target area P). In contrast, as shown inFIG.9, when the light amount of the light emitting unit26is reduced, the contrast of the light and darkness at the puncture target area P and in the portion of the light-irradiated portion102is improved.

When the light amount of the light-irradiated region is adjusted by the light amount adjusting unit30so as to decrease the light amount of the puncture target area P from the state where the light of the light emitting unit26reaches the puncture target area P in the light-irradiated region as shown inFIGS.7and8, a result of which the light of the light emitting unit26does not reach the puncture target area P as shown inFIG.9, it is possible to easily discriminate the puncture target area P based on the light-irradiated region projected on the body surface101. Therefore, it is possible to easily confirm the position of the soft portion23in the living body100from outside of the living body100with higher accuracy.

Furthermore, by adjusting the light amount of the light-irradiated region by the light amount adjusting unit30, and making the luminance of the puncture target area P smaller than the luminance of the portion of the light-irradiated portion102other than the puncture target area P, and setting the difference between the luminance of the puncture target area P and the luminance of the portion of the light-irradiated portion102other than the puncture target area P (the luminance of the portion of the light-irradiated portion102other than the puncture target area P−the luminance of the puncture target area P) to 2% or more, the contrast between the puncture target area P and the portion of the light-irradiated portion102other than the puncture target area P is further improved, so that it is possible for the user to more easily discriminate the puncture target area P from the light-irradiated region. Therefore, it is possible to confirm the position of the soft portion23in the living body100from outside of the living body100with higher accuracy.

Furthermore, it is preferable that the light amount adjusting unit30adjusts the light amount of the light-irradiated region by weakening the light amount. When the light amount of the light-irradiated region is adjusted by weakening the light amount of the light-irradiated region, rather than adjusting by increasing the light amount of the light-irradiated region or adjusting by repeating the increasing and weakening the light amount, the contrast adjustment of the puncture target area P and the portion of the light-irradiated portion102other than the puncture target area P, to easily discriminate the puncture target area P based on the light-irradiated region as described above, becomes easier. Furthermore, when the light amount adjusting unit30adjusts the light amount of the light-irradiated region by weakening so that the luminance of the puncture target area P is smaller than the luminance of the portion of the light-irradiated portion102other than the puncture target area P and the difference between the luminance of the puncture target area P and the luminance of the portion of the light-irradiated portion102other than the puncture target area P is sufficiently recognized, for example, 2° or more, it is possible for the user to easily discriminate the puncture target area P from the light-irradiated region by easily adjusting the contrast between the puncture target area P and the portion of the light-irradiated portion102other than the puncture target area P. With such a configuration, by adjusting the light amount of the light-irradiated region while weakening the light amount by the light amount adjusting unit30, it is possible to easily confirm the position of the soft portion23with higher accuracy. It is also effective to adjust the light amount of the light-irradiated region for each unit in which the user can easily recognize the change in the contrast adjustment so that the change in the light amount of the light-irradiated region including the light-irradiated portions102projected on the body surface101can be easily recognized. For example, the amount of electric power supplied from the power transmitting unit11of the extracorporeal unit10to the power receiving unit25of the medical instrument20may be changed in a stepwise manner for each unit in which the user can easily recognize the change in contrast.

Preferably, the medical device1further includes a stop unit31for stopping the light amount adjusting unit30. As shown inFIG.1, the stop unit31is integrated with the housing10aof the extracorporeal unit10. Alternatively, the stop unit31may be separated from the extracorporeal unit10.

The stop unit31is operated by a user. For example, the stop unit31includes a button, a switch, a foot switch, and a touch screen. The stop unit31may be operated by voice input or line-of-sight input.

When the user activates the stop unit31, the control unit15controls the light amount adjusting unit30to stop the adjustment of the light amount of the light-irradiated region by the light amount adjusting unit30. The user stops the light amount adjusting unit30by the stop unit31to maintain the state of the light-irradiated region in which the puncture target area P can be easily discriminated from the light-irradiated region, when the state of the light-irradiated region in which the puncture target area P of the light-irradiated region can be easily discriminated is established while adjusting the light amount of the light-irradiated region by the light amount adjusting unit30. Therefore, it is possible to easily confirm the position of the soft portion23in the living body100from outside of the living body100with higher accuracy.

The light amount adjusting device41includes the extracorporeal unit10and the light amount adjusting unit30. Since it is possible for the light amount adjusting device41to easily confirm the position of the soft portion23of the medical instrument20embedded in the living body100from outside of the living body100with high accuracy by the extracorporeal unit10and the light amount adjusting unit30, it is possible to easily inject the medicinal solution from the injection needle200into the medicinal solution container22.

Furthermore, it is preferable that the light amount adjusting device41includes the stop unit31. The stop unit31stops the light amount adjusting unit30. It is possible for the light amount adjusting device41to easily confirm the position of the soft portion23in the living body100from outside of the living body100with higher accuracy by the stop unit31.

According to the first embodiment described above, the extracorporeal unit10allows the light emitting unit26mounted on the medical instrument20in the living body100to emit light, and the light amount adjusting unit30adjusts the light amount of the light-irradiated region projected on the body surface101from the light emitting unit26, whereby it is possible to easily confirm the position of the soft portion23constituting the medical instrument20in the living body100from outside of the living body100with high accuracy.

In the above description, as shown inFIG.1, an example of the power transmitting unit11that is coupled with the housing10aand includes the through hole11aand the power transmitting coil17having an annular shape therein is shown. However, the configuration of the power transmitting unit11is not particularly limited as long as electric power can be transmitted from outside of the living body to the power receiving unit25of the medical instrument20embedded in the living body in a non-contact manner.

For example, the power transmitting unit11may be removably coupled with the housing10a. In this case, each of the power transmitting unit11and the housing10aincludes a connector portion (not shown). By coupling the connector portion of the power transmitting unit11with the connector portion of the housing10a, the power transmitting unit11can be coupled to the housing10a. Furthermore, by detaching the connector portion of the power transmitting unit11coupled to the housing10afrom the connector portion of the housing10a, the power transmitting unit11can be detached from the housing10a.

Second Embodiment

FIG.10is a schematic diagram showing an example of a medical device and a light amount adjusting device according to a second embodiment.FIG.11is a block diagram showing a functional configuration of the medical device and the light amount adjusting device.

In the following embodiments, the same components as those of the medical device1and the light amount adjusting device41of the first embodiment are denoted by the same reference numerals, and redundant descriptions thereof will be omitted or simplified.

A medical device2and a light amount adjusting device42of the second embodiment are basically the same as the medical device1and the light amount adjusting device41of the first embodiment except that the configuration of a light amount adjusting unit30adiffers from the light amount adjusting unit30of the first embodiment and a communication unit16(extracorporeal unit-side communication unit) and a light amount meter32are added. Therefore, herein, different configurations therebetween will be mainly described.

As shown inFIGS.10and11, the medical device2includes an extracorporeal unit10, a medical instrument20, a light amount adjusting unit30a, and a light amount meter32. The medical device2may also include a stop unit31.

The light amount meter32measures the light amount of the light-irradiated region including one or more light-irradiated portions102projected on the body surface101. In addition, the light amount meter32transmits a measurement result of the light amount of the light-irradiated region to the communication unit16of the extracorporeal unit10. The light amount meter32is located outside of the living body100.

The light amount meter32is separate from the extracorporeal unit10as shown inFIG.10, but may be integrated with the housing10aof the extracorporeal unit10. Furthermore, as shown inFIG.10, the light amount meter32may be disposed above the light-irradiated region apart from the body surface101, or may be disposed on the body surface101.

In addition to the above configuration, the extracorporeal unit10further includes a communication unit16. Under the control of the control unit15, the communication unit16outputs the measurement result of the light amount of the light-irradiated region received from the light amount meter32to the control unit15.

The extracorporeal unit10includes the light amount adjusting unit30ainstead of the light amount adjusting unit30. The adjustment of the light amount of the light-irradiated region by the light amount adjusting unit30ais automatically performed by the control unit15instead of operation by the user as described above. The control unit15adjusts the light amount of the light-irradiated region by adjusting the light amount adjusting unit30abased on the measurement result of the light amount of the light-irradiated region outputted from the communication unit16. For example, the control unit15refers to biological data such as the body type and the like and the light amount data of the light-irradiated region recorded in the recording unit14, and adjusts the light amount adjusting unit30abased on the measurement result of the light amount of the light-irradiated region. Furthermore, the control unit15may autonomously learn the optimum value of the light amount of the light-irradiated region based on a plurality of results measured by the light amount meter32, and a plurality of pieces of biological data and light amount data in the recording unit14, thereby adjusting the light amount adjusting unit30a.

In this way, the medical device2automatically adjusts the light amount adjusting unit30abased on the light amount of the light-irradiated region. In this way, since the light amount adjusting unit30acan be automated, the operation of confirming the soft portion23in the living body100can be simplified.

The light amount adjusting device42includes the extracorporeal unit10, the light amount adjusting unit30a, and the light amount meter32. Furthermore, the light amount adjusting device42may include a stop unit31. The light amount adjusting device42automatically adjusts the light amount adjusting unit30abased on the light amount of the light-irradiated region. In this way, since the light amount adjusting unit30acan be automated, the operation of confirming the soft portion23in the living body100can be simplified.

According to the second embodiment described above, since the light amount of the light-irradiated region projected on the body surface101is measured by the light amount meter32, and the light amount adjusting unit30acan be adjusted by the control unit15based on the result of the light amount of the light-irradiated region measured by the light amount meter32, the light amount adjusting unit30acan be automated. Therefore, it is easy to confirm the soft portion23constituting the medical instrument20embedded in the living body100.

Furthermore, the medical device2and the light amount adjusting device42may include a camera including an image processing unit instead of the light amount meter32. Such a camera captures an image of a light-irradiated region including one or more light-irradiated portions102projected on the body surface101, and the image processing unit processes the image of the light-irradiated region obtained by the imaging. Subsequently, the camera transmits the data obtained by the image processing to the communication unit16.

The communication unit16of the extracorporeal unit10outputs data received from the camera to the control unit15. The control unit15adjusts the light amount of the light-irradiated region by adjusting the light amount adjusting unit30abased on the data outputted from the communication unit16. For example, the control unit15adjusts the light amount adjusting unit30aby referring to the data recorded in the recording unit14.

Third Embodiment

FIG.12is a schematic diagram showing an example of a medical device and a light amount adjusting device according to a third embodiment.FIG.13is a block diagram showing a functional configuration of the medical device and the light amount adjusting device.

A medical device3and a light amount adjusting device43of the third embodiment are basically the same as the medical device1and the light amount adjusting device41of the first embodiment, except that the configuration of a stop unit31adiffers from the stop unit31, and the communication unit16and the light amount meter32are added. Therefore, herein, different configurations therebetween will be mainly described.

As shown inFIGS.12and13, the medical device3includes an extracorporeal unit10, a medical instrument20, a light amount adjusting unit30, a stop unit31a, and a light amount meter32.

The light amount meter32measures the light amount of the light-irradiated region including one or more light-irradiated portions102projected on the body surface101. In addition, the light amount meter32transmits the measurement result of the light amount of the light-irradiated region to the communication unit16of the extracorporeal unit10. The light amount meter32is located outside of the living body100.

The light amount meter32is separate from the extracorporeal unit10as shown inFIG.12, but may be integrated with the housing10aof the extracorporeal unit10. Furthermore, as shown inFIG.12, the light amount meter32may be disposed above the light-irradiated region apart from the body surface101, or may be disposed on the body surface101.

In addition to the above configuration, the extracorporeal unit10further includes a communication unit16. Under the control of the control unit15, the communication unit16outputs the measurement result of the light amount of the light-irradiated region received from the light amount meter32to the control unit15.

The extracorporeal unit10includes a stop unit31ainstead of the stop unit31. The stop of the light amount adjusting unit30by the stop unit31ais not operated by the user as described above, but is automatically performed by the control unit15. The control unit15activates the stop unit31abased on the measurement result of the light amount of the light-irradiated region outputted from the communication unit16, and stops the adjustment of the light amount of the light-irradiated region by the light amount adjusting unit30. For example, the control unit15refers to the biological data and the light amount data of the light-irradiated region recorded in the recording unit14, and stops the light amount adjusting unit30based on the measurement result of the light amount of the light-irradiated region. Furthermore, the control unit15may autonomously learn the optimum value of the light amount of the light-irradiated region based on the plurality of results measured by the light amount meter32, and the plurality of pieces of biological data and light amount data in the recording unit14, thereby activating the stop unit31a.

In this way, the medical device3automatically activates the stop unit31abased on the light amount of the light-irradiated region. In this way, since the stop unit31acan be automated, the operation of confirming the soft portion23in the living body100becomes simpler.

The light amount adjusting device43includes the extracorporeal unit10, the light amount adjusting unit30, the stop unit31a, and the light amount meter32. The light amount adjusting device43automatically activates the stop unit31abased on the light amount of the light-irradiated region. In this way, since the stop unit31acan be automated, the operation of confirming the soft portion23in the living body100becomes simpler.

According to the third embodiment described above, since the light amount of the light-irradiated region projected on the body surface101is measured by the light amount meter32, and the stop unit31acan be activated by the control unit15based on the result of the light amount of the light-irradiated region measured by the light amount meter32, the stop unit31acan be automated. Therefore, the operation of confirming the soft portion23constituting the medical instrument20in the living body100becomes simpler.

The medical device3and the light amount adjusting device43may include the light amount adjusting unit30ainstead of the light amount adjusting unit30. The automation of the light amount adjusting unit30aby the medical device3and the light amount adjusting device43further simplifies the operation of confirming the soft portion23constituting the medical instrument20in the living body100.

Fourth Embodiment

FIG.14is a schematic diagram showing an example of a medical device and a light amount adjusting device according to a fourth embodiment.FIG.15is a block diagram showing a functional configuration of the medical device and the light amount adjusting device.

A medical device4and a light amount adjusting device44of the fourth embodiment are basically the same as the medical device1and the light amount adjusting device41of the first embodiment except that the configuration of the light amount adjusting unit30adiffers from the light amount adjusting unit30, and that a communication unit16a, a control unit27(medical instrument-side control unit), and a communication unit28(medical instrument-side communication unit) are added. Therefore, herein, different configurations therebetween will be mainly described.

As shown inFIGS.14and15, the medical device4includes an extracorporeal unit10, a medical instrument20, and a light amount adjusting unit30a. The medical device4may also include a stop unit31. The extracorporeal unit10further includes a communication unit16a. In addition to the above configuration, the medical instrument20further includes a control unit27and a communication unit28.

The control unit27mounted on the medical instrument20in the living body100receives the electric power received by the power receiving unit25and outputs the result of the magnitude of the received electric power to the communication unit28. The communication unit28transmits the result of the magnitude of the electric power outputted from the control unit27to the communication unit16aof the extracorporeal unit10. The control unit27and the communication unit28may be integrally provided in the IC chip or may be separately provided. When a patient of which the medical instrument20is embedded in the living body100utilizes MRI, the IC chip may be exposed to a strong magnetic field. Therefore, the medical instrument20may include an electric current detection function for detecting an electric current flowing through the power receiving unit25and a cutoff function such as a switch for electrically disconnecting the power receiving unit25, the control unit27, and the communication unit28. According to this configuration, when the IC chip detects a large electric current equal to or greater than a predetermined threshold value by the electric current detection function, it is possible for the IC chip to electrically disconnect the power receiving unit25, the control unit27, and the communication unit28by the cutoff function, thereby making it possible to interrupt the electric current flowing through the communication unit28.

The communication unit16aof the extracorporeal unit10outputs the result of the magnitude of the electric power received from the communication unit28of the medical instrument20to the control unit15under the control of the control unit15. The control unit15adjusts the light amount of the light-irradiated region by adjusting the light amount adjusting unit30abased on the result of the magnitude of the received electric power of the power receiving unit25outputted from the communication unit16a. For example, the control unit15refers to the biological data, the light amount data of the light-irradiated region, and the data of the received electric power of the power receiving unit25recorded in the recording unit14, and adjusts the light amount adjusting unit30abased on the result of the magnitude of the received electric power of the power receiving unit25. Furthermore, the control unit15may autonomously learn the optimum value of the light amount of the light-irradiated region based on the results of the magnitudes of the plurality of received electric powers measured by the power receiving unit25and the plurality of pieces of biological data, the light amount data of the light-irradiated region, and the data of the received electric power of the power receiving unit25in the recording unit14, thereby adjusting the light amount adjusting unit30a. The light amount adjusting unit30aautomatically adjusts the light amount of the light-irradiated region by the control unit15.

In this way, the medical device4automatically adjusts the light amount adjusting unit30abased on the magnitude of the electric power received by the power receiving unit25constituting the medical instrument20in the living body100. In this way, since the light amount adjusting unit30acan be automated based on the information in the living body100indicating the magnitude of the electric power received by the power receiving unit25, the operation of confirming the soft portion23in the living body100becomes simple.

The light amount adjusting device44includes the extracorporeal unit10and the light amount adjusting unit30a. Furthermore, the light amount adjusting device44may include a stop unit31. The light amount adjusting device44automatically adjusts the light amount adjusting unit30abased on the magnitude of the electric power received by the power receiving unit25constituting the medical instrument20in the living body100. In this way, since the light amount adjusting unit30acan be automated based on the information in the living body100indicating the magnitude of the electric power received by the power receiving unit25, the operation of confirming the soft portion23in the living body100becomes simple.

According to the fourth embodiment described above, since the electric power transmitted from the power transmitting unit11of the extracorporeal unit10to the medical instrument20in the living body100is received by the power receiving unit25, and the light amount adjusting unit30acan be adjusted by the control unit15based on the result of the magnitude of the electric power received by the power receiving unit25in the living body100, the light amount adjusting unit30acan be automated. Therefore, it is easy to confirm the soft portion23constituting the medical instrument20in the living body100.

Fifth Embodiment

FIG.16is a schematic diagram showing an example of a medical device and a light amount adjusting device according to a fifth embodiment.FIG.17is a block diagram showing a functional configuration of the medical device and the light amount adjusting device.

A medical device5and a light amount adjusting device45of the fifth embodiment are basically the same as the medical device1and the light amount adjusting device41of the first embodiment, except that the configuration of the stop unit31adiffers from the stop unit31, and that the communication unit16a, the control unit27, and the communication unit28are added. Therefore, herein, different configurations therebetween will be mainly described.

As shown inFIGS.16and17, the medical device5includes an extracorporeal unit10, a medical instrument20, a light amount adjusting unit30, and a stop unit31a. The extracorporeal unit10further includes a communication unit16a. In addition to the above configuration, the medical instrument20further includes a control unit27and a communication unit28.

The control unit27mounted on the medical instrument20in the living body100receives the electric power received by the power receiving unit25and outputs the result of the magnitude of the received electric power to the communication unit28. The communication unit28transmits the result of the magnitude of the electric power outputted from the control unit27to the communication unit16aof the extracorporeal unit10.

The communication unit16aof the extracorporeal unit10outputs the result of the magnitude of the electric power received from the communication unit28of the medical instrument20to the control unit15under the control of the control unit15. The control unit15activates the stop unit31abased on the result of the magnitude of the received electric power of the power receiving unit25outputted from the communication unit16a, and stops the adjustment of the light amount of the light-irradiated region by the light amount adjusting unit30. For example, the control unit15refers to biometric data, the light amount data, and the data of the received electric power recorded in the recording unit14, and stops the light amount adjusting unit30based on the result of the magnitude of the received electric power of the power receiving unit25. Furthermore, the control unit15may autonomously learn the optimum value of the light amount of the light-irradiated region based on the results of the magnitudes of the plurality of received electric powers measured by the power receiving unit25and the plurality of pieces of biometric data, light amount data, and received electric power data in the recording unit14, thereby activating the stop unit31a. The stop of the light amount adjusting unit30by the stop unit31ais automatically performed by the control unit15.

In this way, the medical device5automatically activates the stop unit31abased on the magnitude of the electric power received by the power receiving unit25constituting the medical instrument20in the living body100. In this way, since the stop unit31acan be automated based on the information in the living body100indicating the magnitude of the electric power received by the power receiving unit25, the operation of confirming the soft portion23in the living body100becomes simpler.

The light amount adjusting device45includes the extracorporeal unit10, the light amount adjusting unit30, and the stop unit31a. The light amount adjusting device45automatically activates the stop unit31abased on the magnitude of the electric power received by the power receiving unit25constituting the medical instrument20in the living body100. In this way, since the stop unit31acan be automated based on the information in the living body100indicating the magnitude of the electric power received by the power receiving unit25, the operation of confirming the soft portion23in the living body100becomes simpler.

According to the fifth embodiment described above, the electric power transmitted from the power transmitting unit11of the extracorporeal unit10to the medical instrument20in the living body100is received by the power receiving unit25, and the stop unit31acan be activated by the control unit15based on the result of the magnitude of the electric power received by the power receiving unit25in the living body100, whereby it is possible to automate the stop unit31a. Therefore, the operation of confirming the soft portion23constituting the medical instrument20in the living body100becomes simpler.

Sixth Embodiment

FIG.18is a schematic diagram showing an example of a medical device and a light amount adjusting device according to a sixth embodiment.FIG.19is a block diagram showing a functional configuration of the medical device and the light amount adjusting device.FIG.20is a schematic diagram showing an example of a medical instrument constituting the medical device.

A medical device6and a light amount adjusting device46of the sixth embodiment are basically the same as the medical device1and the light amount adjusting device41of the first embodiment except that the configuration of the power receiving unit25adiffers from the power receiving unit25. Therefore, herein, different configurations therebetween will be mainly described.

As shown inFIGS.18to20, the medical device6includes an extracorporeal unit10, a medical instrument20, and a light amount adjusting unit30. The medical device6may also include a stop unit31. The medical instrument20includes a power receiving unit25ainstead of the power receiving unit25.

The medical instrument20includes a plurality of power receiving units25a. Each of the power receiving units25ais connected to a corresponding one of the light emitting units26. The power receiving unit25areceives electric power transmitted from the power transmitting unit11of the extracorporeal unit10. For example, the power receiving unit25aincludes a coil which is wound a plurality of times around a cylindrical iron core having a diameter smaller than the diameter of the medicinal solution container22.

Each of the light emitting units26emits light using electric power received by corresponding one of the connected power receiving unit25a. The light amount of each light emitting unit26is determined according to the magnitude of the electric power received by a corresponding one of the power receiving units25a. That is, the light amounts of the plurality of light emitting units26are each independently controlled. Furthermore, the plurality of light emitting units26emit light independently of each other.

The power transmitting unit11transmits electric power to at least one of the plurality of power receiving units25ain a non-contact manner. For example, the user may select a desired power receiving unit25afor transmitting the electric power when operating the input unit13. Furthermore, when the medical device6includes the light amount meter32, the control unit15may select a desired power receiving unit25afor transmitting the electric power based on the result of the light amount of the light-irradiated region measured by the light amount meter32. Furthermore, when the medical device6includes the control unit27and the communication unit28, the control unit15may select a desired power receiving unit25afor transmitting the electric power based on the result of the magnitude of the electric power received by the power receiving unit25aof the medical instrument20. In this way, in the medical device6, the presence or absence of light emission of the plurality of light emitting units26can be individually controlled.

Furthermore, the control unit15adjusts the magnitude of the electric power transmitted from the power transmitting unit11to at least one of the plurality of power receiving units25aby adjusting the light amount adjusting unit30. For example, the user may select a desired power receiving unit25afor adjusting the magnitude of the transmitted electric power when operating the light amount adjusting unit30. Furthermore, when the medical device6includes the light amount meter32, the control unit15may select a desired power receiving unit25afor adjusting the magnitude of the transmitted electric power based on the result of the light amount of the light-irradiated region measured by the light amount meter32. When the medical device6includes the control unit27and the communication unit28, the control unit15may select a desired power receiving unit25afor adjusting the magnitude of the transmitted electric power based on the result of the magnitude of the electric power received by the power receiving unit25aof the medical instrument20. In this way, in the medical device6, the adjustment of the light amounts of the plurality of light emitting units26can be individually controlled.

Furthermore, the control unit15stops the adjustment of the magnitude of the electric power transmitted from the power transmitting unit11to at least one of the plurality of power receiving units25aby the activation of the stop unit31. For example, the user may select a desired power receiving unit25athat stops adjusting the magnitude of the transmitted electric power when activating the stop unit31. When the medical device6includes the light amount meter32, the control unit15may select a desired power receiving unit25athat stops adjusting the magnitude of the transmitted electric power based on the result of the light amount of the light-irradiated region measured by the light amount meter32. When the medical device6includes the control unit27and the communication unit28, the control unit15may select a desired power receiving unit25athat stops adjusting the magnitude of the transmitted electric power based on the result of the magnitude of the electric power received by the power receiving unit25aof the medical instrument20. In this way, in the medical device6, the stop of the adjustment of the light amounts of the plurality of light emitting units26can be individually controlled.

The light amount adjusting device46includes the extracorporeal unit10and the light amount adjusting unit30. In the light amount adjusting device46, the presence or absence of light emission of the plurality of light emitting units26and the adjustment of the light amount of the plurality of light emitting units26can be individually controlled. Furthermore, the light amount adjusting device46may include the stop unit31. The light amount adjusting device46can individually control the stop of the adjustment of the light amounts of the plurality of light emitting units26by the stop unit31.

According to the sixth embodiment described above, it is possible to perform control the state of the desired light-irradiated region while the plurality of light emitting units26are controlled individually. Therefore, it is easy to confirm the soft portion23constituting the medical instrument20in the living body100.

While embodiments have been described above, these embodiments have been presented by way of example only, and are not intended to limit the scope of the inventions. In addition, the drawings referred to in the above description merely schematically show the shape, size, and positional relationship to the extent that the contents of the present disclosure can be understood. That is, the present disclosure is not limited to the shapes, sizes, and positional relationships illustrated in the drawings.

EXPLANATION OF REFERENCE NUMERALS