JP7129543B2 - Medical devices, extracorporeal units, power transfer sheets and medical instruments - Google Patents

Description

TECHNICAL FIELD The present disclosure relates to a medical device, an extracorporeal unit, a power transmitting sheet, and a medical device for detecting the position of a medical device implanted in the body of a subject.

2. Description of the Related Art Among medical devices, an implantable medical device having a main body embedded in the body is used to inject a drug solution into the body. This medical device reduces the burden on patients who have to make frequent injections to inject drug solutions. The medical device has a body portion and a soft portion through which an injection needle is inserted. This soft portion is made of, for example, silicone rubber. Then, in the medical device, the liquid medicine is injected into the liquid medicine container through the soft portion. A drug solution is delivered to the blood vessel through the catheter.

Since the main body of such a medical instrument is embedded in the body, it is difficult to identify the position of the soft part by visual inspection from the outside of the body.

Therefore, by applying the technique proposed in Patent Document 1, a medical instrument having a soft portion formed by mixing a resin material with a light-emitting material that emits near-infrared fluorescence when irradiated with near-infrared excitation light. can be considered. With such a medical instrument, there is a possibility that the position of the soft part can be visually identified by converting near-infrared fluorescence into visible light.

Japanese Patent No. 5958922

However, when the luminescent material is mixed with the resin material to form the soft portion, the luminescent material agglomerates, and concentration quenching reduces the amount of near-infrared fluorescence emitted by the luminescent material. can be difficult to identify.

Although the medical device having a soft portion has been described here, implantable medical devices that do not have a soft portion also have similar problems.

The present disclosure has been made in view of the above, and provides a medical device, an extracorporeal unit, a power transmission sheet, and a medical device that allow easy confirmation of a predetermined portion of the medical device that is implanted in the body and used. With the goal.

In order to solve the above-described problems and achieve an object, a medical device according to the present disclosure includes a power transmission unit having a second coil that transmits power in a contactless manner; and a medical device having the power receiving unit and embedded in the body, wherein the medical device moves with the power transmitting unit as the power transmitting unit moves. A plurality of light emitting units that, when the relative positional relationship with the power receiving unit reaches a predetermined state, emits light using the power received by the power receiving unit to notify that the predetermined state has been reached. and a soft portion through which an injection needle is inserted, and the plurality of light-emitting portions are arranged along the outer edge of the soft portion.

Further, in the medical device according to the present disclosure, in the above disclosure, there are a plurality of power receiving units, and the plurality of light emitting units emit light using power received by the power receiving units connected to them.

Further, in the medical device according to the present disclosure, in the above disclosure, the plurality of light emitting units share the power receiving unit and emit light using power received by the power receiving unit.

Further, in the medical device according to the present disclosure, in the above disclosure, the notification unit has a first light intensity at a brightest place within a circle having a first radius smaller than an inner diameter of the soft portion; and a second light intensity at the brightest place outside the circle having a second radius greater than the radius.

Further, in the medical device according to the present disclosure, in the above disclosure, the power transmission unit has a plate-shaped sheet portion, and the sheet portion is provided with a second coil for transmitting the power. , in said second coil, a hole through which an injection needle can be injected, said hole having a diameter F defined by F<(A−2D).
A: Diameter of the soft portion D: Distance between the center of the soft portion at which the light emitting portion can emit light and the center of the second coil

Further, an extracorporeal unit according to the present disclosure is an extracorporeal unit that detects a predetermined portion of a medical device that is implanted in the body and has a power receiving unit that receives power transmitted from the outside in a contactless manner, and detects the power. A power transmission section having a second coil for contactless transmission, the power transmission section having a plate-shaped sheet section, the sheet section being provided with the second coil for transmitting the power. and having a needle-injectable hole in said second coil, said hole having a diameter F defined by F<(A-2D).
A: Diameter of the soft portion D: Distance between the center of the soft portion at which the light emitting portion can emit light and the center of the second coil

In addition, the power transmission sheet according to the present disclosure is embedded in the body and is detachably attached to an extracorporeal unit that detects a predetermined portion of a medical device having a power receiving unit that receives power transmitted from the outside in a contactless manner. A power transmission sheet, wherein the power transmission sheet has a plate-shaped sheet portion, the sheet portion is provided with a second coil for transmitting the electric power, and the second coil contains a , having a hole through which an injection needle can be injected, the diameter F of said hole having a size defined by F<(A−2D).
A: Diameter of the soft portion D: Distance between the center of the soft portion at which the light emitting portion can emit light and the center of the second coil

Further, a medical device according to the present disclosure is a medical device that is implanted in the body and used, and includes a power receiving unit having a first coil for receiving power transmitted in a contactless manner from a power transmitting unit of an extracorporeal unit; When the relative positional relationship between the power transmission unit and the power reception unit reaches a predetermined state as the power transmission unit moves, the electric power received by the power reception unit is used to emit light to achieve the predetermined state. It has a notification unit configured by a plurality of light emitting units that notify that a state has occurred, and a soft portion through which an injection needle is inserted, and the plurality of light emitting units are arranged along the outer edge of the soft portion. placed.

Advantageous Effects of Invention According to the present disclosure, it is possible to easily confirm a predetermined portion of a medical device that is used while being implanted in the body.

FIG. 1 is a schematic diagram showing a schematic configuration of a medical device according to Embodiment 1 of the present disclosure. FIG. 2 is a block diagram showing the functional configuration of the medical device according to Embodiment 1 of the present disclosure. FIG. 3 is a schematic diagram showing a schematic configuration of the medical device according to Embodiment 1 of the present disclosure. FIG. 4 is a schematic diagram showing a schematic configuration of an extracorporeal unit according to Embodiment 1 of the present disclosure. FIG. 5 is a schematic diagram showing a schematic configuration of a medical device according to Embodiment 2 of the present disclosure. FIG. 6 is a block diagram showing a functional configuration of a medical device according to Embodiment 2 of the present disclosure. FIG. 7 is a schematic diagram showing a schematic configuration of a medical device according to Embodiment 2 of the present disclosure. FIG. 8 is a schematic diagram showing a schematic configuration of another medical device according to Embodiment 2 of the present disclosure. FIG. 9 is a schematic diagram showing a schematic configuration of a medical device according to Embodiment 3 of the present disclosure. FIG. 10 is a block diagram showing the functional configuration of a medical device according to Embodiment 3 of the present disclosure. FIG. 11 is a block diagram showing the functional configuration of the medical instrument. FIG. 12 is a schematic diagram showing a schematic configuration of the medical instrument. FIG. 13 is a circuit diagram of a power receiving section including a first coil, a power receiving circuit, and a light emitting section. FIG. 14 is a diagram schematically showing the configuration of the power receiving unit. FIG. 15 is a diagram showing the configuration of the power receiving unit when the first coil is shared. FIG. 16 is a diagram showing a schematic appearance of the medical device. FIG. 17 is a circuit diagram in the case where the power receiving unit is composed of one first coil and three light emitting units. FIG. 18 is a diagram for explaining a case where the first light intensity and the second light intensity have the first relationship. FIG. 19 is a diagram for explaining a case where the first light intensity and the second light intensity have the second relationship. FIG. 20 is a diagram for explaining a first example in which the notification unit is configured such that the first light intensity and the second light intensity have the first relationship. FIG. 21 is a diagram schematically showing how the light-emitting portion is tilted toward the center of the soft portion. FIG. 22 is a diagram schematically showing a state when the light emitting section is viewed from the side. FIG. 23 is a diagram for explaining a second example in which the notification unit is configured such that the first light intensity and the second light intensity have the first relationship. FIG. 24 is a diagram schematically showing a state in which the light emitting portion is tilted toward the outside of the soft portion. FIG. 25 is a diagram schematically showing a state when the light emitting section is viewed from the side. FIG. 26 is a diagram schematically showing a member in which a cylindrical hole for attaching a light-emitting portion is formed. FIG. 27 is a schematic diagram showing a schematic configuration of a power transmission unit. FIG. 28 is a diagram for explaining the diameter of the holes. FIG. 29 is a first diagram for explaining the relationship between the hole and the soft portion. FIG. 30 is a second diagram for explaining the relationship between the hole and the soft portion. FIG. 31 is a third diagram for explaining the relationship between the hole and the soft portion.

Hereinafter, embodiments for implementing the present disclosure will be described in detail with drawings. It should be noted that the present disclosure is not limited by the following embodiments. In addition, each drawing referred to in the following description only schematically shows 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 only to the shapes, sizes, and positional relationships illustrated in each drawing. Furthermore, in the following description, a medical device, an extracorporeal unit, a power transmission sheet, and a medical device for detecting a predetermined portion of a medical device implanted in the living body of a subject including humans and animals will be described in detail.

(Embodiment 1)
[Configuration of medical device]
FIG. 1 is a schematic diagram showing a schematic configuration of a medical device according to Embodiment 1. FIG. 2 is a block diagram showing the functional configuration of the medical device according to Embodiment 1. FIG. A medical device 1 shown in FIGS. 1 and 2 includes a medical device 10 that is embedded in a living body 100 of a subject and an extracorporeal unit 20 that detects a predetermined portion of the medical device 10 .

[Composition of medical equipment]
First, the detailed configuration of the medical device 10 will be described. FIG. 3 is a schematic diagram showing a schematic configuration of the medical device 10. As shown in FIG.

The medical device 10 shown in FIGS. 1, 2 and 3 is, for example, referred to as a subcutaneously implantable port (CV port). As shown in FIGS. 1, 2 and 3, the medical device 10 is used with the main body 11 embedded in the living body 100. As shown in FIGS.

The main body 11 is a housing made of, for example, epoxy resin. As shown in FIGS. 1, 2 and 3, the body portion 11 includes a drug solution container 12, a soft portion 13, a catheter 14, a first coil 15, a power receiving circuit 16, and a first communication portion 17. And prepare.

The chemical container 12 is a chamber that temporarily stores the chemical. The drug solution container 12 has a circular opening 12a on the outside of the body.

The soft portion 13 is what is called a septum. The soft portion 13 closes the opening 12 a of the drug solution container 12 . The soft portion 13 is a soft lid (silicone diaphragm) made of, for example, silicone rubber, and is provided in such a manner as to be exposed from the main body portion 11 as well. Further, the soft portion 13 has a cylindrical shape. The soft portion 13 is a portion through which an injection needle can be inserted from the body surface 101 of the subject after the body portion 11 is embedded in the living body 100 for injecting a liquid medicine (infusion).

One end of the catheter 14 communicates with the drug solution container 12, and the other end is inserted into a blood vessel (not shown). This catheter 14 transports the drug solution temporarily stored in the drug solution container 12 .

The first coil 15 is formed by winding a plurality of annular coils around the end surface of the drug solution container 12 outside the body, and is provided around the soft portion 13 . The first coil 15 is mainly composed of a copper wire in order to increase the power supply with a small size, but may be composed of an aluminum wire in order to reduce the weight. For example, the first coil 15 is formed to have a weight of approximately 5 g. The first coil 15 is formed by molding so as to be integrated with the body portion 11 .

The power receiving circuit 16 receives power (induced electromotive force) generated in the first coil 15 and outputs the result of power reception to the first communication unit 17 . In addition, in Embodiment 1, the first coil 15 and the power receiving circuit 16 function as a power receiving unit.

The first communication unit 17 receives the power reception result input from the power reception circuit 16 via the first coil 15 and transmits radio waves to the extracorporeal unit 20 . Note that the power receiving circuit 16 and the first communication unit 17 may be formed integrally within the IC chip, or may be formed separately. When a subject with the medical device 10 implanted in his or her body uses MRI, the IC chip may be exposed to a strong magnetic field. For this reason, the medical device 10 has a current detection function that detects the current flowing through the first coil 15, and a disconnection function such as a switch that electrically disconnects the first coil, the power receiving circuit 16, and the first communication unit 17. A configuration having a function may also be used. According to such a configuration, the IC chip electrically disconnects the first coil, the power receiving circuit 16, and the first communication unit 17 by the cutoff function when the current detection function detects a large current equal to or greater than the predetermined threshold. , the current flowing through the first communication unit 17 can be cut off.

[Configuration of extracorporeal unit]
Next, a schematic configuration of the extracorporeal unit 20 will be described. FIG. 4 is a schematic diagram showing a schematic configuration of the extracorporeal unit 20. As shown in FIG.

The extracorporeal unit 20 shown in FIGS. 1, 2, and 4 detects a predetermined portion of the medical device 10 implanted in the living body 100 for use. When the relative positional relationship between the first coil 15 of the medical device 10 and the power transmission section 22 described later reaches a predetermined state, the extracorporeal unit 20 is arranged to move the first coil 15 relative to the power transmission section 22 described later. It notifies that the relative positional relationship has reached a predetermined state. As shown in FIGS. 1, 2 and 4, the extracorporeal unit 20 includes a housing 21 and a power transmitting section 22 detachable from the housing 21. As shown in FIGS. Note that the housing portion 21 and the power transmission portion 22 may be integrally formed. Although the details will be described later, as shown in FIG. 1, it is preferable that the inner diameter R2 of the hole 224 is designed to be smaller than the outer diameter R1 of the soft portion 13 .

[Configuration of housing]
First, the configuration of the housing section 21 will be described. The housing part 21 accommodates a circuit board on which a power source, an IC chip, etc., which will be described later, are mounted. The housing unit 21 supplies power to the power transmission unit 22 and receives the power reception result of the power reception by the power transmission unit 22 . The housing portion 21 includes a first connection portion 211, a power supply portion 212, a second communication portion 213, an input portion 214, a recording portion 215, an output portion 216, a display portion 217, and a light emission portion 218. and a control unit 219 .

The first connection unit 211 is electrically connectable to the power transmission unit 22 attached to the housing unit 21 and supplies the power input from the power supply unit 212 to the power transmission unit 22 . The first connecting portion 211 is configured using, for example, a female electric coupler.

Power supply unit 212 supplies power to power transmission unit 22 via first connection unit 211 under the control of control unit 219 . The power supply unit 212 is configured using a battery, a booster circuit, or the like.

Under the control of control unit 219 , second communication unit 213 outputs the power reception result (signal) received by power transmission unit 22 via first connection unit 211 to control unit 219 .

The input unit 214 receives an input of operation by the user. The input unit 214 is implemented using buttons, switches, a touch panel, and the like. Here, the user is either a doctor, a nurse, a caregiver, or the subject patient himself/herself.

The recording unit 215 records various programs and information executed by the extracorporeal unit 20 . The recording unit 215 is implemented using volatile memory and non-volatile memory.

The output unit 216 outputs audio under the control of the control unit 219 . The output unit 216 is implemented using a speaker or the like, for example.

The display unit 217 displays predetermined information under the control of the control unit 219 . The display unit 217 is implemented using liquid crystal, organic EL (Electro Luminescence), or the like.

The light emitting unit 218 emits light under the control of the control unit 219 . The light emitting unit 218 is implemented using an LED (Light Emitting Diode).

The control section 219 controls each section that configures the extracorporeal unit 20 . When the input unit 214 is pressed, the control unit 219 controls the power supply unit 212 to supply power to the power transmission unit 22 via the first connection unit 211 . In addition, when the power reception result is input from the second communication unit 213, the control unit 219 causes the light emitting unit 218 to emit light so that the relative positional relationship between the power transmitting unit 22 and the medical device 10 is brought into a predetermined state. let me know what happened. Specifically, the control unit 219 sets the relative positional relationship with the medical device 10 to a predetermined state based on the electric power received as a power reception result from the second communication unit 213 . The fact that the second coil 222 of the power transmission section 22 (to be described later) is positioned above the first coil 15 is notified by causing the light emitting section 218 to emit light. The control unit 219 is implemented using a memory and a processor having hardware such as a CPU (Central Processing Unit).

[Procedure for detecting the position of a medical device]
Next, a procedure for detecting the position of the medical device will be described. The user presses the input section 214 of the extracorporeal unit 20 to supply power from the power supply section 212 of the housing section 21 to the second coil 222 of the power transmission section 22 . Then, the user brings the power transmission section 22 of the extracorporeal unit 20 closer while searching for the medical device 10 embedded in the living body 100 . In this case, the second coil 222 generates magnetic flux by being supplied with power from the power supply section 212 via the second connection section 223 and the first connection section 211 .

The user then brings the extracorporeal unit 20 closer to the medical device 10 . Under this circumstance, when the relative positional relationship between the first coil 15 and the second coil 222 of the medical device 10 reaches a predetermined position, the light emitting unit 218 reaches a predetermined position on the medical device 10. The user is notified by emitting light to indicate that. In this case, when the first coil 15 and the second coil 222 of the medical device 10 reach a position where the first coil 15 and the second coil 222 overlap each other in the vertical direction, the medical device 1 emits light to notify the user. As a result, the user can easily confirm the position of the soft portion 13 in the medical device 10 that is embedded in the living body 100 and used. Specifically, the user can recognize that the soft portion 13 is positioned below the hole 224 at the location where the light emitting portion 218 emits light.

Note that when the relative positional relationship between the first coil 15 and the second coil 222 of the medical device 10 reaches a predetermined position, the control unit 219 not only causes the light emitting unit 218 to emit light, but also causes the output unit The user may be notified by causing 216 to output sound. Furthermore, the control section 219 may notify the user by causing the display section 217 to display information indicating that the second coil 222 has reached the soft portion 13 of the medical device 10 .

After that, the user inserts the injection needle using the hole 224 formed inside the power transmission section 22 as a mark. Thereby, the user can insert the injection needle through the soft portion 13 of the medical device 10 without hesitation about the position of the soft portion 13 , and can easily inject the liquid medicine into the liquid medicine container 12 .

According to Embodiment 1 described above, when the relative positional relationship between the first coil 15 and the second coil 222 of the medical device 10 reaches a predetermined position, the light-emitting unit 218 emits light. Since it notifies that the relative positional relationship between the first coil 15 and the second coil 222 of the medical device 10 has reached a predetermined position, the soft portion of the medical device 10 embedded in the living body 100 is 13 can be easily identified.

Further, according to Embodiment 1, since the power transmission section 22 of the extracorporeal unit 20 is detachable from the casing 21, the casing 21 can be reused for other subjects. The cost for introducing the device 1 can be reduced.

Further, according to Embodiment 1, since the first coil 15 is provided in an annular shape around the soft portion 13 , the position of the soft portion 13 in the medical device 10 is indicated by the light emitted from the light emitting portion 218 . (form) can be easily identified.

In addition, according to Embodiment 1, since the hole 224 is provided in the center of the power transmitting section 22 where the second coil 222 is provided, the first coil 15 and the second coil 222 of the medical device 10 are positioned relative to each other. The injection needle can be easily inserted into the soft portion 13 of the medical device 10 in a state where the physical positional relationship reaches a predetermined position.

(Embodiment 2)
Next, Embodiment 2 will be described. In Embodiment 1 described above, the relative positional relationship between the first coil 15 and the second coil 222 in the medical device 10 is brought into a predetermined state by emitting light from the light emitting section 218 of the extracorporeal unit 20. However, in the second embodiment, the medical device is provided with a notification unit to notify. In addition, the same code|symbol is attached|subjected to the structure same as the medical device 1 which concerns on Embodiment 1 mentioned above, and detailed description is abbreviate|omitted.

[Configuration of medical device]
FIG. 5 is a schematic diagram showing a schematic configuration of a medical device according to Embodiment 2. FIG. FIG. 6 is a block diagram showing a functional configuration of a medical device according to Embodiment 2. FIG.

A medical device 1D shown in FIGS. 5 and 6 includes a medical device 10D that is embedded in a living body 100 of a subject and an extracorporeal unit 20D that detects a predetermined portion of the medical device 10. FIG.

[Composition of medical equipment]
First, the detailed configuration of the medical device 10D will be described. FIG. 7 is a schematic diagram showing a schematic configuration of the medical device 10D.

A medical device 10D shown in FIGS. 5, 6 and 7 includes a plurality of light emitting units 60 in addition to the configuration of Embodiment 1 described above, and the first communication unit 17 is omitted.

The light-emitting portions 60 are annularly arranged around the soft portion 13 at predetermined intervals. Specifically, the light-emitting portions 60 are arranged at three locations around the soft portion 13 in an annular shape at intervals of 120 degrees around the center of the first coil 15 . The light emitting unit 60 emits light according to the power received by the power receiving circuit 16D. The light emitting unit 60 is configured using an LED. Specifically, it is preferable to use an LED with high directivity for the light emitting unit 60 . More specifically, the light-emitting unit 60 preferably uses a red LED that emits light in a red wavelength band because it is permeable to a living body such as a subject. It should be noted that, as shown in FIG. 8, the number and arrangement of the light emitting units 60 can be changed as appropriate.

[Configuration of extracorporeal unit]
Next, the configuration of the extracorporeal unit 20D will be described. In the extracorporeal unit 20D shown in FIGS. 5 and 6, the second communication section 213, the output section 216, the display section 217 and the light emitting section 218 are omitted from the configuration of the housing section 21 of the first embodiment. Additionally, the extracorporeal unit 20D further comprises a second coil 230 .

The second coil 230 has an annular shape, generates magnetic flux according to the power input from the power supply unit 212, and transmits the power to the first coil. Further, the power supplied by the second coil 230 is such that the light emitting unit 60 can emit light even if the distance between the second coil 230 and the first coil 15 is a predetermined distance, for example, about several tens of centimeters. It is of a degree.

The medical device 1D configured in this manner supplies electric power from the extracorporeal unit 20D, and notifies the location where the medical device 10D is implanted by emitting light from the plurality of light emitting units 60 of the medical device 10D. This allows the user to intuitively grasp the position and center of the soft portion 13 in the medical device 10D from the outside of the subject.

According to the second embodiment described above, the position of the soft portion 13 of the medical device 10D can be intuitively grasped from the outside of the subject because the plurality of light emitting units 60 of the medical device 10D emit light to notify the user. can be done.

(Embodiment 3)
Next, Embodiment 3 will be described. As in the second embodiment described above, the notification is given by providing the notification unit in the medical instrument. In addition, in the medical device 10D according to Embodiment 2, the first coil 15 is arranged around the soft portion 13, but in the medical device 10G according to Embodiment 3, the first coil 15 is arranged on one side. It is arranged for each light emitting unit 60 or a plurality of light emitting units 60 . The same reference numerals are assigned to the same configurations as those of the medical device 1 according to the first embodiment and the medical device 10D according to the second embodiment, and detailed description thereof will be omitted.

[Configuration of medical device]
FIG. 9 is a schematic diagram showing a schematic configuration of a medical device according to Embodiment 3. FIG. 10 is a block diagram showing a functional configuration of a medical device according to Embodiment 3. FIG.

A medical device 1G shown in FIGS. 9 and 10 includes a medical device 10G that is embedded in a living body 100 of a subject and an extracorporeal unit 20G that detects a predetermined portion of the medical device 10G. Although the details will be described later, the light emitting unit 60 is composed of the light emitting units 60a, 60b, and 60c, but is not limited to three. Also, the first coil 15 is composed of the first coils 15a, 15b, and 15c, but is not limited to three.

As shown in FIG. 9, the extracorporeal unit 20G includes a housing 21 and a power transmitting section 22 that is detachable from the housing 21. As shown in FIG. In the present embodiment, the concept of "power transmission unit" includes "power transmission sheet". The housing unit 21 and the power transmission unit 22 are connected by wire or wirelessly. In the case of a wired connection, a form in which power is supplied from the housing unit 21 to the power transmission unit 22 by connecting with a cable of a predetermined length is conceivable. Further, in the case of wireless communication, for example, a form in which power is supplied from the housing unit 21 to the power transmission unit 22 using contactless power supply is conceivable.

[Composition of medical equipment]
First, the detailed configuration of the medical device 10G will be described. FIG. 11 is a block diagram showing the functional configuration of the medical device 10G. FIG. 12 is a schematic diagram showing a schematic configuration of the medical device 10G.

The medical device 1G includes a power transmission section 22, a power reception section, and a medical instrument 10G. The power transmission unit 22 has a second coil 222 that transmits power in a contactless manner.

The power receiving unit has a first coil 15 and a power receiving circuit 16 . The first coil 15 receives power transmitted from the power transmission section 22 . The power receiving circuit 16 transmits power (induced electromotive force) received by the first coil 15 to the notification unit. Note that the notification unit is implemented by, for example, a light emitting unit 60 described later. The power receiving circuit 16 also converts the power received by the first coil 15 into predetermined power, and transmits the converted power to the notification unit.

The medical device 10G has a power receiving section and is used by being implanted in the body. Specifically, the medical device 10G has a notification portion and a soft portion 13 . When the relative positional relationship between the power transmission unit 22 and the power reception unit reaches a predetermined state as the power transmission unit 22 moves, the notification unit emits light using the power received by the power reception unit. It is composed of a plurality of light emitting units 60 for notifying that the predetermined state has been reached. The plurality of light emitting portions 60 are arranged along the outer edge of the soft portion 13 . For example, the plurality of light emitting parts 60 are arranged at predetermined intervals along the outer edge of the soft part 13 . Soft portion 13 is inserted with an injection needle for injecting a liquid medicine.

In Embodiment 3, an example in which three light emitting units 60 are arranged around the soft portion 13 at predetermined intervals (for example, every 120 degrees) is shown. It may be four or more.

Here, the configuration of the power receiving unit will be described. There are a plurality of power receiving units. The plurality of light emitting units 60 emit light using the power received by the power receiving units connected thereto.

FIG. 11 shows an example in which there are three sets of the configuration in which the light emitting section 60, the first coil 15, and the power receiving circuit 16 are set as one set. FIG. 12 is a diagram showing a schematic appearance of the medical device 10G.

Specifically, as shown in FIG. 11, the medical device 10G includes first coils 15a, 15b, 15c, power receiving circuits 16a, 16b, 16c, and light emitters 60a, 60b, 60c. In the following description, the term "first coil 15" may refer to individual first coils 15a, 15b, and 15c, or may collectively refer to the first coils 15a, 15b, and 15c. Similarly, the term "power receiving circuit 16" may refer to individual power receiving circuits 16a, 16b, and 16c, or may collectively represent the concept of power receiving circuits 16a, 16b, and 16c. Similarly, the term “light-emitting portion 60” may refer to individual light-emitting portions 60a, 60b, and 60c, or may collectively represent the concept of light-emitting portions 60a, 60b, and 60c.

The first coil 15a supplies the received power to the light emitting section 60a via the power receiving circuit 16a. The first coil 15b supplies the received power to the light emitting section 60b via the power receiving circuit 16b. The first coil 15c supplies the received power to the light emitting section 60c via the power receiving circuit 16c.

FIG. 13 shows a circuit diagram of the power receiving unit. Note that FIG. 13 shows a configuration in which the light emitting portion 60a, the first coil 15a, and the power receiving circuit 16a are combined into one set.

In the case of such a configuration, the light-emitting portions 60a, 60b, and 60c can emit light independently, and the power receiving portion can be manufactured without depending on the size and shape of the outer diameter of the soft portion 13. can.

FIG. 14 is a diagram showing a specific configuration of the power receiving unit. The first coil 15a for transmitting power to the light emitting unit 60 may be wound around a small-diameter cylindrical iron core F. Since the power receiving unit is integrated in this manner, it can be arranged at an arbitrary position outside the chemical container 12 . In addition, since the power receiving unit has a configuration in which one coil is provided for one light emitting unit, it is possible to increase the received power by increasing the number of turns of the coil within the range that can be accommodated within the outer shape of the main body. Light emission can be made brighter, making it easier to visually recognize. Further, preferably, the cylindrical coil has a diameter of 2 mm or less and a height of 5 mm or less.

Next, another configuration of the power receiving unit will be described. The plurality of light emitting units 60 share the power receiving unit and emit light using power received by the power receiving unit.

FIG. 15 is a diagram showing an example in which the power receiving unit is composed of one first coil 15, three light emitting units 60a, 60b and 60c, and three power receiving circuits 16a, 16b and 16c. FIG. 16 is a diagram showing a schematic appearance of the medical device 10G. FIG. 17 is a circuit diagram in which the power receiving unit is composed of one first coil 15, three light emitting units 60a, 60b and 60c, and three power receiving circuits 16a, 16b and 16c. .

Specifically, as shown in FIG. 17, the medical device 10G includes a first coil 15, power receiving circuits 16a, 16b and 16c, and light emitting portions 60a, 60b and 60c. Note that the power receiving circuit 16 may have a single capacitor, which may be shared by the light emitting units 60a, 60b, and 60c.

That is, the power receiving circuits 16a, 16b, 16c and the light emitting units 60a, 60b, 60c share the first coil 15. FIG.

FIG. 17 shows a circuit diagram in the case where the power receiving unit is composed of the first coil 15 and three light emitting units 60. As shown in FIG. With respect to the first coil 15, the pair of the power receiving circuit 16a and the light emitting unit 60a, the pair of the power receiving circuit 16b and the light emitting unit 60b, and the pair of the power receiving circuit 16c and the light emitting unit 60c are connected in parallel. ing.

With such a configuration, the light-emitting portions 60a, 60b, and 60c can emit light simultaneously, and the power receiving portion can be formed without depending on the size and shape of the outer diameter of the soft portion 13. FIG.

Although FIG. 16 shows a configuration in which the first coil 15 is annularly installed only around the light emitting portion 60a, the present invention is not limited to this configuration, and as shown in FIG. A configuration in which they are installed in an annular shape around the periphery is also possible.

Next, a specific configuration of the notification unit will be described. The reporting unit has a first light intensity at the brightest place in a circle having a first radius smaller than the inner diameter of the soft part 13, and a first light intensity at the brightest place outside the circle having a second radius larger than the first radius. 2nd light intensity and are comprised so that it may differ.

FIG. 18 is a diagram for explaining a case where the first light intensity and the second light intensity have the first relationship. The first relationship is "first light intensity">"second light intensity". r11 indicates the inner diameter of the soft portion 13; r12 indicates a first radius smaller than the inner diameter of the soft portion 13; r13 indicates a second radius that is larger than the first radius. c11 denotes an inner circle with a first radius r12. c12 denotes an outer circle with a second radius r13.

Also, the brightest place in the inner circle c11 having the first radius r12 is, for example, the vicinity of the center of the inner circle c11. The brightest place in the outer circle c12 having the second radius r13 is, for example, the vicinity of the circumference of the outer circle c12.

That is, the vicinity of the center of the inner circle c11 appears brighter than the vicinity of the circumference of the outer circle c12. In this way, the notification section can emit light with different first light intensity and second light intensity, and can notify the position near the center of the soft portion 13 .

FIG. 19 is a diagram for explaining a case where the first light intensity and the second light intensity have the second relationship. The second relationship is "first light intensity"<"second light intensity". r21 indicates the inner diameter of the soft portion 13; r22 indicates a first radius smaller than the inner diameter of the soft portion 13; r23 indicates a second radius that is larger than the first radius. c21 denotes an inner circle with a first radius r22. c22 denotes an outer circle with a second radius r23.

Also, the brightest place in the inner circle c21 having the first radius r22 is, for example, the vicinity of the center of the inner circle c21. The brightest place in the outer circle c22 having the second radius r23 is, for example, the vicinity of the circumference of the outer circle c22.

That is, the vicinity of the circumference of the outer circle c22 appears brighter than the vicinity of the center of the inner circle c21. In this way, the notification unit can notify the position near the center of the soft part 13 by configuring the first light intensity and the second light intensity to be different.

Here, since the light emitted from the light emitting part 60 is diffused, when the light is transmitted from the body to the skin surface, the transmitted light becomes blurred, and the position of the soft part 13 may become difficult to see. It is preferable to suppress the diffusion of light. Although the details will be described later, if the light emitting portion is built into a cylindrical member whose inner surface reflects, the diffusion of light is suppressed, the transmitted light is not blurred, and the position (center position) of the soft portion 13 is easier to visually recognize. Become.

In addition, since the light emitting part 60 has an emission angle, the light is diffused. tilted toward, the vicinity of the center of the soft portion 13 becomes darker than the periphery of the soft portion 13. - 特許庁This makes it easier to visually recognize the center of the soft portion 13 .

Further, although the details will be described later, the external unit 20, which is an external power supply device, has a function of adjusting the amount of electric power. According to such a configuration, for example, when the light emitted from the light emitting part 60 is too bright and the light transmitted through the skin surface overlaps, making it difficult to visually recognize the center of the soft part 13, the light emitted from the light emitting part 60 The amount of light emitted from the light emitting unit 60 can be adjusted by weakening the amount of electric power to such an extent that the center can be visually recognized. On the other hand, for example, when the light emitted from the light emitting unit 60 is too dark and the light transmitted through the skin surface is weak, making it difficult to visually recognize the center of the soft part 13, the power is increased to the extent that the center of the soft part 13 can be visually recognized. The amount of light emitted from the light emitting unit 60 can be adjusted by increasing the amount.

FIG. 20 is a diagram for explaining a first example in which the notification unit is configured such that the first light intensity and the second light intensity have the first relationship. FIG. 20 is a diagram schematically showing how the soft portion 13 is viewed from above. Moreover, FIG. 20 schematically shows a state when the light-emitting portions 60a, 60b, and 60c constituting the notification portion emit light.

As shown in FIG. 20, the light emitting portions 60a, 60b, and 60c are arranged around the soft portion 13 at predetermined intervals (for example, every 120 degrees). FIG. 21 is a diagram schematically showing how the light emitting portion 60a is tilted toward the center of the soft portion 13. As shown in FIG. Although FIG. 21 shows only the light emitting portion 60a, the light emitting portions 60b and 60c are similarly inclined toward the center of the soft portion 13. As shown in FIG. In this manner, the light-emitting portions 60a, 60b, and 60c are arranged at a predetermined angle toward the center of the soft portion 13. As shown in FIG.

With this configuration, the annunciator can emit light with different first light intensity and second light intensity so that the vicinity of the center of the soft portion 13 is brighter than the outer periphery. A position near the center of the portion 13 can be notified.

Note that the light emitting units 60a, 60b, and 60c may be configured to emit light in different colors. Specifically, for example, if the light emitted by the light emitting unit 60a is red (R), the light emitted by the light emitting unit 60b is green (G), and the light emitted by the light emitting unit 60c is blue (B), , and the vicinity of the center of the soft portion 13 where each color is mixed (subtractive color mixing) becomes white. Therefore, the color (white) in the vicinity of the center of the soft portion 13 can be made different from the color (white) in the vicinity of the center of the soft portion 13, and the position of the vicinity of the center of the soft portion 13 can be notified by this color difference.

Also, the light emitting units 60a, 60b, and 60c themselves do not need to be tilted. FIG. 22 is a diagram schematically showing a state when the light emitting section 60a is viewed from the side. Although FIG. 22 shows only the light emitting portion 60a, the light emitting portions 60b and 60c have the same configuration.

A member 61 may be formed around the light-emitting portion 60 to prevent diffusion of light and guide the optical path to the center of the soft portion 13, for example. With such a configuration as well, the optical paths of the light-emitting portions 60a, 60b, and 60c can be concentrated at the center of the soft portion 13. FIG. The member 61 may be configured in a cylindrical shape, for example. Moreover, the inner side of the member 61 may be made of a reflecting member such as aluminum so as to reflect the light from the light emitting section 60 . Further, a lens or the like for condensing the light emitted from the light emitting section 60 may be arranged on the member 61 . Note that the shape and structure of the member 61 are conceivable other than those described above, and are not limited to the examples described above.

With such a configuration as well, the notification unit can emit light with different first light intensity and second light intensity, and can notify the position near the center of the soft portion 13 .

FIG. 23 is a diagram for explaining a second example in which the notification unit is configured such that the first light intensity and the second light intensity have the first relationship. FIG. 23 is a schematic diagram of the soft portion 13 viewed from above. Moreover, FIG. 23 schematically shows a state when the light emitting portions 60a, 60b, and 60c constituting the notification portion emit light.

As shown in FIG. 23, the light emitting portions 60a, 60b, and 60c are arranged around the soft portion 13 at predetermined intervals (for example, every 120 degrees). FIG. 24 is a diagram schematically showing how the light emitting portion 60a is tilted toward the outside of the soft portion 13. As shown in FIG. Although FIG. 24 shows only the light-emitting portion 60a, the light-emitting portions 60b and 60c are also inclined outward of the soft portion 13 in the same manner. In this manner, the light-emitting portions 60a, 60b, and 60c are arranged at a predetermined angle toward the outside of the soft portion 13. As shown in FIG.

With this configuration, the notification section can emit light with different first light intensity and second light intensity so that the vicinity of the center of the soft portion 13 is darker than the outer periphery. A position near the center of the portion 13 can be notified.

Also, the light emitting units 60a, 60b, and 60c themselves do not need to be tilted. FIG. 25 is a diagram schematically showing a state when the light emitting section 60 is viewed from the side.

A member 62 may be formed around the light-emitting portion 60 to prevent diffusion of light and guide the optical path around the soft portion 13, for example. With such a configuration as well, the optical paths of the light emitting portions 60a, 60b, and 60c can be concentrated around the soft portion 13. FIG. The member 62 may be configured in a cylindrical shape, for example. Moreover, the inner side of the member 62 may be made of a reflecting member such as aluminum so as to reflect the light from the light emitting section 60 . Further, a lens or the like for condensing the light emitted from the light emitting section 60 may be arranged on the member 62 . Note that the shape and structure of the member 62 are conceivable other than those described above, and are not limited to the examples described above.

With such a configuration as well, the notification unit can emit light with different first light intensity and second light intensity, and can notify the position near the center of the soft portion 13 .

Here, the member 63 having the functions of the members 61 and 62 will be described. FIG. 26 is a diagram schematically showing a member 63 in which cylindrical holes 63a, 63b, and 63c for attaching (embedding) the light emitting section 60 are formed. The member 63 is formed in an annular shape and has a hole of a predetermined size formed in the center. The member 63 is arranged on the body portion 11 so that the surface of the soft portion 13 is exposed through this hole. Cylindrical holes 63a, 63b, and 63c are evenly formed around the member 63 (for example, 120 degrees). A light-emitting portion 60a is attached to the cylindrical hole 63a. A light-emitting portion 60b is attached to the tubular hole 63b. A light-emitting portion 60c is attached to the cylindrical hole 63c.

The cylindrical holes 63 a , 63 b , 63 c are formed so as to be inclined toward the center side or the circumference side of the member 63 . For example, if the cylindrical holes 63a, 63b, and 63c are formed so as to guide the optical paths of the light-emitting portions 60 toward the center of the soft portion 13 (toward the center of the member 63), the same effect as when the member 61 is formed can be obtained. play. Further, for example, if cylindrical holes 63a, 63b, and 63c are formed in the direction (circumferential side of member 63) to guide the optical path of each light-emitting portion 60 to the periphery of soft portion 13, the same effect as when member 62 is formed can be achieved. Effective.

In addition, since the member 63 has cylindrical holes 63a, 63b and 63c formed evenly on the circumference, the light emitting portions 60a, 60b and 60c can be easily positioned, and the light emitting portions 60a, 60b and 60c can be easily positioned. are attached to the cylindrical holes 63a, 63b, 63c, the same effect as when the members 61, 62 are formed can be obtained.

FIG. 27 is a schematic diagram showing a schematic configuration of the power transmission section 22. As shown in FIG. The power transmission unit 22 has a function of transmitting power in a contactless manner.

The power transmission unit 22 shown in FIGS. 1, 2 and 27 has a plate-like sheet portion 221 . A second coil 222 for transmitting power is provided on one side of the sheet portion 221, and the second coil 222 has a hole 224 into which an injection needle can be injected. Further, the sheet portion 221 is provided with a second connection portion 223 for electrically connecting the second coil 222 and the power supply portion 212 of the housing portion 21 on the other side. In addition, it is necessary to prevent the soft part 13 from coming off when the injection needle is inserted. Although the details will be described later, it is preferable that the size of the hole 224 is slightly smaller than the size of the soft portion 13 .

The seat portion 221 has arcuate ends in the longitudinal direction. The sheet portion 221 is realized using, for example, a nonwoven fabric or the like. Also, the sheet portion 221 is formed by sandwiching the second coil 222 and the second connection portion 223 with two sheets of nonwoven fabric. In Embodiment 3, a sealing member that can be attached to a subject or a sealing member with an adhesive member or the like may be provided on the back side (subject side) of the sheet portion 221 . Further, in the third embodiment, instead of the sealing member, a lubricant may be applied to the back side (subject side) of the sheet portion 221 so that the body surface 101 of the subject can move smoothly.

The second coil 222 has an annular shape and is provided on one side of the seat portion 221 in the longitudinal direction. The second coil 222 generates magnetic flux in response to power input from the housing 21 via the second connection portion 223 .

The second connection portion 223 is provided on the other side of the sheet portion 221 in the longitudinal direction, and electrically connects the second coil 222 and the power supply portion 212 of the housing portion 21 . The second connecting portion 223 is configured using, for example, a male electrical coupler.

A hole 224 is provided in the second coil 222 . For example, hole 224 is provided in the center where second coil 222 is provided. A hole 224 allows insertion and removal of an injection needle. Note that the inner diameter of the second coil 222 and the diameter of the hole 224 can be appropriately changed according to the diameter of the soft portion 13 .

Further, although the details will be described later, the diameter of the hole 224 is slightly larger than the diameter of the injection needle. Preferably, the diameter of hole 224 is equal to or less than the diameter of the injection needle plus 0.2 mm. By designing such dimensions, even if the center detection accuracy of the second coil 222 deviates by several millimeters, the injection needle can be inserted into the soft portion 13 . The amount of deviation is allowed up to the radius of the soft portion 13 or less, so that the position detection accuracy of coil threading can be relaxed, the design becomes easier, and it is effective in terms of manufacturability and cost. Furthermore, the locations of the soft portion 13 to be punctured by the injection needle are not concentrated at one point, and the durability of the soft portion 13 can be extended.

Here, the size (diameter F) of the hole 224 will be described below, but there are various ways of thinking about the diameter F of the hole 224, and the description is not limited to the following.

FIG. 28 is a diagram for explaining the diameter F of the hole 224. FIG. In FIG. 28, as an example, it is assumed that the size of the soft portion 13 and the size of the second coil 222 are approximately the same.

Based on FIG. 28, the diameter F of hole 224 is
F=(A-2D) (1)
defined by However, A indicates the diameter of the soft portion 13 . D indicates the distance between the center of the soft portion 13 and the center of the second coil 222 when the light emitting portion 60 is in a state capable of emitting light. That is, the distance D indicates the amount of deviation (accuracy) between the center of the soft portion 13 and the center of the second coil 222 . The diameter F of the hole 224 is determined by the amount of deviation that can be tolerated.

For example, the distance D can be controlled by controlling the magnitude of the magnetic flux generated from the extracorporeal unit 20G. When the magnetic flux generated from the extracorporeal unit 20 is large (hereinafter referred to as the first configuration), power is received by the first coil 15 even if the distance between the second coil 222 and the first coil 15 is a certain distance or more. The notification unit operates (lights up) with the supplied power. In the case of the first configuration, the notification by the notification unit can be performed at a position where the center of the second coil 222 and the center of the soft portion 13 are separated. The diameter F should be made small.

29, 30 and 31 are diagrams for explaining the relationship between hole 224 and soft portion 13 in the case of the first configuration. If the inner diameter of the hole 224 is made approximately the same as the outer diameter of the injection needle 40 or slightly larger than the outer diameter of the injection needle 40 based on the formula (1), the center of the second coil 222 is displaced from the center of the soft portion 13. Even if the injection needle 40 is inserted into the hole 224 , the injection needle 40 can hit the soft portion 13 . Also, as shown in FIGS. 29, 30 and 31, by changing the position of the second coil 222 each time the injection needle 40 is inserted, the same location on the soft portion 13 can be repeatedly injected with the injection needle 40 . Pricking can be avoided, and the life of the soft part 13 can be extended.

Further, when the magnetic flux generated from the extracorporeal unit 20 is small (hereinafter referred to as the second configuration), when the distance between the second coil 222 and the first coil 15 is within the certain distance, the first The notification unit operates (lights up) by the electric power received by the coil 15 of . In the case of the second configuration, the notification by the notification unit is performed at a position where the center of the second coil 222 and the center of the soft portion 13 are close to each other. can be made large.

Specifically, the input unit 214 inputs a value based on the user's operation to the control unit 219 . Control unit 219 controls power supply unit 212 based on the value input from input unit 214 . The power supply unit 212 supplies power to the second coil 222 under the control of the control unit 219 .

For example, when the user wishes to generate a large magnetic flux from the extracorporeal unit 20 , the user uses the input section 214 to input the value V1 to the control section 219 . Also, when the user wants to generate a small magnetic flux from the extracorporeal unit 20 , the user uses the input section 214 to input the value V2 to the control section 219 . Note that the value V1>the value V2. In addition, although the magnitude|size of magnetic flux was demonstrated by two steps above, it is not restricted to this, The magnitude|size of magnetic flux may be controllable by three or more steps.

Here, when forming the diameter F of the hole 224 slightly smaller than the diameter A of the soft portion 13, the diameter F of the hole 224 is formed based on the formula (2).
F<(A-2D) (2)

By forming the diameter F of the hole 224 based on the formula (2), the user, a doctor or a nurse, can insert the injection needle so as not to come off the soft portion 13 .

Various shapes and sizes are applied to the medical device 11. For example, assuming that the diameter A of the soft portion 13 is 8.0 mm and the diameter F of the hole 224 is 1.1 mm, the distance D is obtained as follows. Here, it is assumed that the diameter F of the hole 224 is the diameter of the injection needle. The diameter F of the hole 224 (the diameter of the injection needle) was assumed to be the upper limit of SUS304 nominal 19G (outer diameter (mm): 1.08±0.02).
D<(8.0−1.1)/2=3.45 mm (3)

Here, a case where the distance D is formed to be large and a case where the distance D is formed to be small will be described. When the distance D is set to be large, even if the center of the second coil 222 and the center of the soft part 13 (strictly speaking, the first coil 15) are separated, the notifying part notifies the position of the soft part 13. be able to. In this way, when the distance D is formed to be large, a doctor or a nurse who is a user can know the position of the soft portion 13 by a simple procedure.

On the other hand, when the distance D is set to be small, the center of the second coil 222 is brought close to the center of the soft portion 13 (strictly speaking, the first coil 15) to some extent so that the position of the soft portion 13 is detected by the annunciator. can be notified.

Thus, when the distance D is formed large, the diameter F of the hole 224 can be formed larger than when the distance D is formed small. It is possible to select the position to pierce the soft part 13, avoid piercing the same place of the soft part 13 with an injection needle many times, and extend the life of the soft part 13. - 特許庁

In order to allow the injection needle to pass through, the hole 224 can be considered as large as or larger than the diameter of the injection needle. It should be noted that if the injection needle is designed to pass through the sheet 221, there is no need to form the hole 224 in the sheet 221. FIG. In the case of such a configuration, the sheet 221 (for example, a location corresponding to the center of the second coil 222) may be marked to indicate the location where the injection needle should be inserted.

In addition, by forming the diameter F of the hole 224 based on the formula (4), the center of the soft part 13 is in the area where the hole 224 is formed, and the injection is performed so as not to come off the soft part 13. You can prick a needle.
F>2D (4)

In addition, by forming the diameter F of the hole 224 based on the formula (5), the center of the soft part 13 does not enter the area where the hole 224 is formed, and the injection is performed so as not to come off the soft part 13 . You can prick a needle.
F<2D (5)

By forming the diameter F of the hole 224 based on the formula (2), (4), or (5) as described above, the injection needle can be inserted so as not to come off the soft portion 13 . Note that the diameter F of the hole 224 is not limited to the formulas (2), (4) and (5).

As described above, some of the embodiments of the present application have been described in detail with reference to the drawings. It is possible to carry out the present invention in other forms with modifications and improvements.

Reference Signs List 1, 1D, 1G medical device 10, 10D, 10G medical instrument 11 main body 12 drug container 12a opening 13 soft part 14 catheter 15 first coil 16 power receiving circuit 17 first communication part 20, 20D, 20G extracorporeal unit 21 housing body part 22 power transmission part 40 injection needle 60 light emitting part 70 first coil 100 living body 101 body surface 102 subject 211 first connection part 212 power supply part 213 second communication part 214 input part 215 recording part 216 output part 217 display Part 218 Light emitting part 219 Control part 221 Sheet part 222, 230 Second coil 223 Second connection part 224 Hole

Claims (8)

a power transmission unit having a second coil that transmits electric power in a contactless manner;
a power receiving unit having a first coil that receives the power transmitted from the power transmitting unit;
a medical device that has the power receiving unit and is used by being implanted in the body;
The medical device comprises:
a soft portion through which the injection needle is inserted;
and a notification unit composed of a plurality of light emitting units,
The plurality of light emitting parts are arranged along the outer edge of the soft part and emit light in a red wavelength band,
The reporting unit is configured such that the relative positional relationship between the second coil forming the power transmitting unit and the first coil forming the power receiving unit reaches a predetermined state as the power transmitting unit moves. when the power received by the power receiving unit is used to emit light from the plurality of light emitting units to notify the position of the soft portion;
The plurality of light emitting parts are configured to emit light toward the center or the outside of the soft part, and the intensity of light on the center side of the soft part is different from the intensity of light on the outside of the soft part. Device. The medical device of claim 1, wherein
a plurality of the power receiving units,
The medical device, wherein the plurality of light emitting units emit light using electric power received by the power receiving units connected to the plurality of light emitting units. The medical device of claim 1, wherein
A medical device in which the plurality of light emitting units share the power receiving unit and emit light using power received by the power receiving unit. A medical device according to any one of claims 1 to 3,
The medical apparatus according to claim 1, wherein the plurality of light-emitting portions are configured such that the light intensity outside the soft portion is higher than the light intensity on the center side of the soft portion. A medical device according to any one of claims 1 to 4,
The power transmission unit
having a plate-like sheet portion,
The sheet portion is provided with a second coil for transmitting the electric power, and has a hole into which an injection needle can be injected in the second coil. A medical device that is implanted in the body and has a power receiving part that receives power transmitted from the outside in a contactless manner, a soft part through which an injection needle is inserted, and a notification part that is composed of a plurality of light emitting parts. An extracorporeal unit that detects a predetermined location of
A power transmission unit having a second coil that transmits power in a contactless manner, emitting light in a red wavelength band,
The plurality of light emitting parts are arranged along the outer edge of the soft part,
When the relative positional relationship between the power transmission unit and the power reception unit reaches a predetermined state as the power transmission unit moves, the notification unit uses the power received by the power reception unit to Notifying the position of the soft part by emitting light from the light emitting part of
The plurality of light emitting units are configured to emit light toward the center or the outside of the soft portion, and the light intensity on the center side of the soft portion is different from the light intensity on the outside of the soft portion,
The power transmission unit
having a plate-like sheet portion,
The sheet portion is provided with a second coil for transmitting the electric power, and has a hole into which an injection needle can be injected in the second coil. A medical device that is implanted in the body and has a power receiving part that receives power transmitted from the outside in a contactless manner, a soft part through which an injection needle is inserted, and a notification part that is composed of a plurality of light emitting parts. A power transmission sheet detachable from an extracorporeal unit that detects a predetermined location of
The plurality of light emitting parts are arranged along the outer edge of the soft part and emit light in a red wavelength band,
When the relative positional relationship between the power transmission sheet and the power reception section reaches a predetermined state as the power transmission sheet moves, the notification section uses the power received by the power reception section to Notifying the position of the soft part by emitting light from the light emitting part of
The plurality of light emitting units are configured to emit light toward the center or the outside of the soft portion, and the light intensity on the center side of the soft portion is different from the light intensity on the outside of the soft portion,
The power transmission sheet is
having a plate-like sheet portion,
The sheet portion is provided with a second coil for transmitting the electric power, and has a hole into which an injection needle can be injected in the second coil. A medical device that is used by being implanted in the body,
a power receiving unit having a first coil that receives power wirelessly transmitted from the power transmitting unit of the extracorporeal unit;
a soft portion through which the injection needle is inserted;
and a notification unit composed of a plurality of light emitting units,
The plurality of light emitting parts are arranged along the outer edge of the soft part and emit light in a red wavelength band,
When the relative positional relationship between the power transmission unit and the power reception unit reaches a predetermined state as the power transmission unit moves, the notification unit uses the power received by the power reception unit to Notifying the position of the soft part by emitting light from the light emitting part of
The plurality of light emitting parts are configured to emit light toward the center or the outside of the soft part, and the intensity of light on the center side of the soft part is different from the intensity of light on the outside of the soft part. instrument.

Images