Power supply device and medical device

Abstract

The present invention provides: a power feeding device which makes it possible to facilitate a piercing operation while supplying electric power to an intracorporeal implanting-type medical instrument; and a medical device equipped with said power feeding device. This power feeding device 20 is provided with: a power transmission coil 24 which supplies electric power from outside of the body in a non-contact manner via a power receiving coil 151 of an intracorporeal implanting-type medical instrument 10 to which a medicinal solution is injected from outside the body; a support 23 which supports the power transmission coil 24; and an adhesive part 23 which is formed on the side of the support 23 facing the body surface 101 of a living subject 100.

Description

[Technical field]

[0001] The present invention relates to a power supply device that supplies power to an implantable medical device into which a medicinal solution is injected from outside the body, and a medical device including the power supply device. [Background technology]

[0002] In medical instruments, an implantable medical device is used in which a main body is implanted in the body to inject a liquid medicine into the body. This medical instrument reduces the burden on patients who must frequently receive intravenous injections to inject the liquid medicine. For example, Patent Document 1 describes this type of technology. The medical instrument described in Patent Document 1 has a soft part in the main body through which an injection needle is inserted. This soft part is made of, for example, silicone rubber. Then, in the medical instrument, the liquid medicine is injected into a liquid medicine container through the soft part. The liquid medicine is transported into a blood vessel through a catheter. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 5958922 Summary of the Invention [Problem to be solved by the invention]

[0004] However, when it is desired to supply power to a medical instrument embedded in the body from outside the body using a power supply device in a non-contact manner, it is necessary to bring the power supply device close to the power supply part of the medical instrument to a distance that allows power supply. For example, it is conceivable that the user may use his / her hand to hold the power supply device in a position where power can be supplied to the medical instrument, but this makes it difficult to perform a puncture operation while supplying power.

[0005] The present disclosure has been made in consideration of the above, and aims to provide a power supply device that can easily perform a puncture operation while supplying power to an implantable medical instrument, and a medical apparatus including the power supply device. [Means for solving the problem]

[0006] The power supply device according to the present disclosure includes a power transmission coil that supplies power contactlessly from outside the body via a coil of an implantable medical device into which a medicinal solution is injected from outside the body, a support that supports the power transmission coil, and an adhesive portion formed on the body surface side of the support of a target living body.

[0007] In addition, the power supply device according to the present disclosure, in the above disclosure, further includes a deformable elastic deformation portion disposed between the support body and the adhesive portion.

[0008] In the power supply device according to the present disclosure, the support and the adhesive portion are sterilized.

[0009] In the power supply device according to the present disclosure, in the above disclosure, the support has a hole through which a syringe needle for injecting a medicinal solution can be inserted, and the power transmission coil is disposed so as to surround the hole.

[0010] In the power supply device according to the present disclosure, in the above disclosure, the power transmission coil includes a connector between conductors that configure the coil.

[0011] In addition, in the power supply device according to the present disclosure, in the above disclosure, the support has a cutout portion cut out so that an injection needle for injecting a medicinal solution can be inserted, and the power transmission coil is formed to match the shape of the cutout portion.

[0012] In the power supply device according to the present disclosure, the power transmission coil is formed in a spiral shape.

[0013] Furthermore, the medical device according to the present disclosure, in the above disclosure, comprises the power supply device and an implantable medical instrument, wherein the medical instrument comprises a soft part through which an injection needle for injecting a medicinal solution is inserted, a medicinal solution container having an opening closed by the soft part and receiving the medicinal solution injected from the injection needle, and a power receiving part capable of contactlessly receiving power supplied from the power transmission coil of the power supply device using a coil.

[0014] In addition, in the medical device according to the present disclosure, the medical instrument further includes a light emitting unit that emits light.

[0015] Furthermore, the medical device according to the present disclosure, in the above disclosure, comprises the power supply device and an implantable medical device, wherein the medical device comprises: a soft section through which an injection needle for injecting a medicinal solution is inserted; a medicinal solution container having an opening blocked by the soft section and receiving the medicinal solution injected from the injection needle; a power receiving section capable of receiving power supplied from the power transmission coil of the power supply device in a non-contact manner using a coil; and a light-emitting section that emits light, wherein the diameter of the hole of the power supply device is longer than the outer diameter of the soft section and the radius of the hole is longer than the distance between the center of the soft section and the light-emitting section in a planar view. Effect of the Invention

[0016] According to the present invention, it is possible to provide a power supply device that can easily perform a puncture operation while supplying power to an implantable medical instrument, and a medical apparatus including the power supply device. [Brief description of the drawings]

[0017] [Figure 1] FIG. 1 is a schematic diagram showing a schematic configuration of a medical device according to a first embodiment of the present disclosure. [Diagram 2] FIG. 2 is a block diagram showing a functional configuration of the medical device according to the first embodiment of the present disclosure. [Diagram 3] FIG. 3 is a plan view showing the medical device according to the first embodiment of the present disclosure. [Figure 4]FIG. 4 is a schematic diagram showing a first modified example of the medical device according to the first embodiment of the present disclosure. [Diagram 5] FIG. 5 is a plan view showing a first modified example of the medical device according to the first embodiment of the present disclosure. [Figure 6] FIG. 6 is a plan view showing a second modified example of the medical device according to the first embodiment of the present disclosure. [Figure 7] FIG. 7 is a plan view illustrating the power supply device according to the first embodiment of the present disclosure. [Figure 8] FIG. 8 is a plan view illustrating the power transmitting unit according to the first embodiment of the present disclosure. [Figure 9] FIG. 9 is a cross-sectional view illustrating a power transmitting unit according to the first embodiment of the present disclosure. [Figure 10A] FIG. 10A is an enlarged view illustrating the vicinity of the first connection end and the second connection end shown in FIG. 8 of the support body in a state in which the connector according to the first embodiment of the present disclosure is connected. [Figure 10B] FIG. 10B is an enlarged view illustrating the vicinity of the first connection end and the second connection end shown in FIG. 8 of the support body in a state in which the connection of the connector according to the first embodiment of the present disclosure is released. [Figure 11A] FIG. 11A is a first schematic diagram showing a state prior to injection of a medical solution into a living body by puncturing using the medical device according to the first embodiment of the present disclosure. [Figure 11B] FIG. 11B is a second schematic diagram showing a state in which a medicinal liquid is injected into a living body using the medical device according to the first embodiment of the present disclosure. [Figure 11C] FIG. 11C is a third schematic diagram showing a state in which a medicinal liquid is injected into a living body using the medical device according to the first embodiment of the present disclosure. [Figure 12] FIG. 12 is a plan view illustrating a power transmitting unit according to the second embodiment of the present disclosure. [Figure 13] FIG. 13 is a plan view illustrating a power transmitting unit according to the third embodiment of the present disclosure. [Figure 14] FIG. 14 is a schematic diagram illustrating a state in which the power transmitting unit according to the third embodiment of the present disclosure is attached to a target living organism. [Figure 15]FIG. 15 is a perspective view of a power transmitting unit according to the fourth embodiment of the present disclosure. [Figure 16] FIG. 16 is a cross-sectional view illustrating a power transmitting unit according to the fourth embodiment of the present disclosure. [Figure 17] FIG. 17 is a schematic diagram illustrating a state in which the power transmitting unit according to the fourth embodiment of the present disclosure is attached to a target living organism. [Figure 18] FIG. 18 is a perspective view illustrating a power transmitting unit according to the fifth embodiment of the present disclosure. [Figure 19] FIG. 19 is a cross-sectional view illustrating a power transmitting unit according to a fifth embodiment of the present disclosure. [Figure 20] FIG. 20 is a schematic diagram illustrating a state in which the power transmitting unit according to the fifth embodiment of the present disclosure is attached to a target living organism. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] Hereinafter, the embodiments for carrying out the present disclosure will be described in detail with reference to the drawings. Note that the present disclosure is not limited to the following embodiments. Furthermore, each drawing referred to in the following description merely shows the shape, size, and positional relationship in a schematic manner to the extent that the contents of the present disclosure can be understood. In other words, the present disclosure is not limited to only the shape, size, and positional relationship exemplified in each drawing. Furthermore, in the following description, a medical device for detecting a predetermined location in a medical instrument that is used by being embedded in the body of a target living body including a human or an animal, and a power supply device will be described in detail.

[0019] (Embodiment 1) [Configuration of medical device] Fig. 1 is a schematic diagram showing a schematic configuration of a medical device 1 according to embodiment 1. Fig. 2 is a block diagram showing a functional configuration of the medical device 1 according to embodiment 1. The medical device 1 shown in Figs. 1 and 2 includes a medical instrument 10 that is implanted in the body of a target living organism 100 and into which a medicinal solution is injected by inserting an injection needle, and a power supply device 20 that supplies power to the medical instrument 10.

[0020] [Configuration of medical device] First, a detailed configuration of the medical device 10 will be described.

[0021] 1 to 3 is what is called, for example, a subcutaneously implantable central venous access port (CV port). The medical device 10 is used with a main body portion 11 embedded in the body of a target living body 100 as shown in FIGS.

[0022] The main body 11 is a housing made of, for example, epoxy resin. As shown in FIGS. 1 to 3, the device includes a drug solution container 12, a soft portion 13, a catheter 14, a power receiving portion 15, and a light emitting portion 16.

[0023] The liquid medicine container 12 is a place where the injected liquid medicine passes while being temporarily delivered to the catheter. That is, the liquid medicine container 12 receives the liquid medicine injected from the injection needle. The liquid medicine container 12 has a circular opening 12a on the outside of the body.

[0024] The soft part 13 is what is called a septum. The soft part 13 closes the opening 12a of the drug solution container 12. The soft part 13 is a soft lid (silicone plug) made of, for example, silicone rubber, and is provided in a manner that it is exposed from the main body part 11. The soft part 13 is cylindrical. The soft part 13 is a portion through which an injection needle for injecting drug solution can be inserted from the body surface 101 of the target living organism 100 after the main body part 11 is embedded in the body of the target living organism 100.

[0025] Soft portion 13 may be transparent or opaque. When light-emitting portion 16, which will be described later, is disposed on the bottom surface of drug solution container 12, soft portion 13 is preferably transparent. When light-emitting portion 16 is disposed on the bottom surface of drug solution container 12, the transmittance of soft portion 13 is preferably 90% or more at the wavelength of light-emitting portion 16.

[0026] One end of the catheter 14 is connected to the liquid medicine container 12, and the other end is inserted into a blood vessel (not shown) etc. The catheter 14 passes through the liquid medicine container 12 to deliver the liquid medicine to the blood vessel.

[0027] The power receiving unit 15 is configured to be able to receive electric power in a non-contact manner from a power transmitting coil 24 (described later) of the power supply device 20. The power receiving unit 15 includes a power receiving coil 151 and a power receiving circuit 152.

[0028] The power receiving coil 151 is wound in a circular shape on the end surface of the drug solution container 12 on the outside of the body, and is provided around the soft portion 13. The power receiving coil 151 is mainly made of copper wire in order to be small and to increase the power supply, but may be made of aluminum wire in order to be lighter. For example, the power receiving coil 151 is formed to weigh about 5 g. The power receiving coil 151 is formed by molding in a manner that it is integrated with the main body portion 11.

[0029] The power receiving circuit 152 receives the electric power (induced electromotive force) generated in the power receiving coil 151 and outputs the received electric power to the light emitting unit 16.

[0030] In the present embodiment, power receiving coil 151 of power receiving unit 15 is provided so as to surround soft portion 13, but power receiving coil 151 may be wound around a small-diameter cylindrical iron core. This allows power receiving unit 15 to be manufactured without depending on the size and shape of the outer diameter of soft portion 13.

[0031] FIG. 4 is a schematic diagram showing a first modified example of the medical device 10. FIG. 5 is a plan view showing a first modified example of the medical device 10. FIG. 6 is a plan view showing a second modified example of the medical device 10. Note that in FIGS. 4 to 6, the power receiving circuit 152 is omitted. As shown in FIG. 4, the medical device 10 may be configured such that one light emitting unit 16 is arranged on the bottom surface of the liquid medicine container 12. In this configuration, for example, one or more power receiving coils 151 are arranged around the liquid medicine container 12 (FIG. 6 shows an example in which three power receiving coils 151 are arranged) and are connected to the light emitting unit 16. In addition, a groove is formed in the main body 11 through which a connection wire that connects the power receiving coil 151 and the light emitting unit 16 passes. In addition, the power receiving coil 151 may be composed of one coil as shown in FIG. 5, or may be composed of multiple coils (for example, three coils) as shown in FIG. 6.

[0032] The light-emitting unit 16 is, for example, an LED (Light Emitting Diode), and emits light according to the power received by the power receiving circuit 152. The light-emitting unit 16 is arranged around the soft part 13, and illuminates at least the upper surface of the soft part 13. For example, the light-emitting units 16 are arranged in a circular shape at predetermined intervals around the soft part 13. In this embodiment, the light-emitting units 16 are arranged in four places around the soft part 13 in a circular shape at intervals of approximately 90 degrees.

[0033] The number and arrangement of the light-emitting units 16 can be changed as appropriate. That is, the number of the light-emitting units 16 may be three or less, or may be five or more. The light-emitting units 16 may be arranged on the side or bottom surface of the liquid medicine container 12. For example, one or more light-emitting units 16 may be arranged in the center of the bottom surface of the liquid medicine container 12. Two light-emitting units 16 may be arranged in positions facing each other around the soft part 13. According to this configuration in which the two light-emitting units 16 are arranged in opposing positions, the center of two points on the body surface 101 illuminated by the light L emitted from each light-emitting unit 16 indicates the approximate center of the soft part 13, so that the center of the soft part 13 can be identified using the light L as a clue. The number of light-emitting units 16 is preferably two, in order to balance the effect of minimizing the number of parts and notifying the position of the soft part 13.

[0034] In the present embodiment, the medical instrument 10 is configured to supply power from one power receiving unit 15 to the multiple light emitting units 16, but when multiple light emitting units 16 are provided, multiple power receiving units 15 may be provided, one for each light emitting unit 16. That is, the medical instrument 10 may be configured to include one power receiving coil 151 and one power receiving circuit 152 for one light emitting unit 16. This allows the multiple light emitting units 16 to emit light independently.

[0035] Moreover, it is preferable to use a highly directional LED as the light-emitting unit 16. More specifically, it is preferable to use a red LED as the light-emitting unit 16, which emits light in a red wavelength band in terms of transmission through the living body of a target living body or the like.

[0036] [Configuration of power supply device] Next, a description will be given of a schematic configuration of the power supply device 20. FIG.

[0037] The power supply device 20 is a device that supplies power to the implantable medical instrument 10. As shown in Fig. 1, Fig. 2 and Fig. 7, the power supply device 20 includes a housing unit 21 and a power transmission unit 22 that is detachable from the housing unit 21. The housing unit 21 and the power transmission unit 22 may be integrally formed.

[0038] [Configuration of the housing] First, a description will be given of the configuration of the housing unit 21. The housing unit 21 houses a circuit board on which a power supply, an IC chip, and the like (described later) are mounted. The housing unit 21 supplies power to the power transmission unit 22. The housing unit 21 includes a first connection unit 211, a power supply unit 212, an input unit 213, a recording unit 214, and a control unit 215.

[0039] First connection unit 211 is electrically connectable to power transmission unit 22 attached to housing unit 21, and supplies power input from power supply unit 212 to power transmission unit 22. First connection unit 211 is configured using, for example, a female electric coupler.

[0040] Under the control of the control unit 215, the power supply unit 212 supplies power to the power transmitting unit 22 via the first connection unit 211. The power supply unit 212 includes a battery 216 as a power source, a boost circuit, and the like.

[0041] The input unit 213 receives input of operations performed by the user. The input unit 213 is realized using a button, a switch, a touch panel, etc. Here, the user is any one of a doctor, a nurse, a caregiver, and the patient himself / herself who is the target living body.

[0042] The recording unit 214 records various programs and information executed by the power supply device 20. The recording unit 214 is realized using a volatile memory and a non-volatile memory.

[0043] The control unit 215 controls each unit constituting the power supply device 20. When the input unit 213 is pressed, the control unit 215 controls the power supply unit 212 to supply power to the power transmission unit 22 via the first connection unit 211. The control unit 215 is realized using a memory and a processor having hardware such as a CPU (Central Processing Unit).

[0044] [Configuration of power transmission section] Next, a description will be given of the configuration of power transmission unit 22. Fig. 8 is a plan view showing power transmission unit 22, and Fig. 9 is a cross-sectional view of power transmission unit 22 taken along line AA shown in Fig. 8. Power transmission unit 22 has a function of transmitting electric power in a non-contact manner.

[0045] 1, 2, and 8, the power transmission unit 22 has a support 23, an adhesive portion 233, an elastic deformation portion 232, a power transmission coil 24, and a second connection portion 25. In the first embodiment, the power transmission unit 22 functions as a power transmission sheet. Since the support 23 and the power transmission coil 24 come into contact with the patient's body, it is desirable not to reuse them from the viewpoint of preventing infection, etc. In this embodiment, the power transmission unit 22 and the housing portion 21 are detachable, so that it is possible to discard the support 23 and the power transmission coil 24 while leaving the housing portion 21.

[0046] The support 23 has a long and narrow plate shape, and both ends in the longitudinal direction are formed into an arc shape. Examples of materials for the support 23 include nonwoven fabric, woven fabric, resin (PE film), and resin foam (PE foam). The support 23 supports the power transmission coil 24. In this embodiment, the support 23 is formed by sandwiching the power transmission coil 24 and the second connection part 25 between two sheets of nonwoven fabric.

[0047] A hole 234, which is an opening through which an injection needle can be inserted, is formed on one side in the longitudinal direction of the support 23. In this embodiment, the hole 234 is configured such that the annular state is released when the overlapping first connection end 234a and second connection end 234b are separated from each other.

[0048] 1, the inner diameter dimension R2 of the hole 234 is preferably larger than the outer diameter dimension R1 of the soft portion 13. The inner diameter dimension R2 of the hole 234 is not particularly limited, but is preferably 1 cm or more. In this embodiment, the inner diameter dimension R2 of the hole is 1 cm or more. In addition, the radius of the hole 234 is longer than the distance between the center of the soft portion 13 and the light-emitting portion 16 in a plan view.

[0049] A second connection part 25 is provided on the other end in the longitudinal direction of the support 23. The second connection part 25 electrically connects the power transmission coil 24 and the power supply part 212 of the housing part 21. The second connection part 25 is configured using, for example, a male electric coupler.

[0050] The adhesive portion 233 is a layer made of an attachment member, an adhesive member, or the like that can be attached to the body surface 101 of the target living organism 100. As shown in FIG. 9, the adhesive portion 233 is formed on the body surface 101 side of the support 23. That is, it is formed on the surface that contacts the body surface 101 on the side opposite to the power transmission coil 24 side. The adhesive force of the adhesive portion 233 is preferably 0.9 N / cm to 7.7 N / cm. The thickness of the adhesive portion 233 is preferably 25 μm to 100 μm. Examples of the material of the adhesive portion include a silicone-based adhesive.

[0051] The elastically deformable portion 232 is a deformable cushioning layer disposed between the support 23 and the adhesive portion 233. The thickness of the elastically deformable portion 232 is preferably 1 mm or less. Note that, when only the support 23 and the adhesive portion 233 are capable of conforming to the skin, the elastically deformable portion 232 is not necessary.

[0052] Moreover, it is preferable that the distance from the core of power transmission coil 24 to body surface 101 be within 2 mm. For example, by setting the thickness of elastic deformation portion 232 to about 1 mm and setting the combined thickness of support 23 in contact with elastic deformation portion 232 and adhesive portion 233 to 1 mm or less, the distance from the core of power transmission coil 24 to body surface 101 can be set to within 2 mm.

[0053] The power transmission coil 24 supplies electric power from outside the body in a non-contact manner via the power receiving coil 151 of the implantable medical device 10 into which a medicinal solution is injected from outside the body. The power transmission coil 24 is a planar coil provided in a ring shape around the hole 234. The power transmission coil 24 generates a magnetic flux in response to the electric power input from the housing 21 via the second connection part 25. The power transmission coil 24 includes connectors 241, 242 between the conductors constituting the coil. That is, the power transmission coil 24 is configured such that the conductors on one side and the conductors on the other side constituting the coil are connected via the connectors 241, 242. In this embodiment, the power transmission coil 24 is configured such that the ring shape can be released by the connectors 241, 242.

[0054] A configuration for releasing the annular state of the power transmitting coil 24 will be described with reference to Fig. 10A and Fig. 10B. Fig. 10A is an enlarged view of the vicinity of the first connection end 234a and the second connection end 234b of the support body 23 in a state in which the connectors 241, 242 are connected, and Fig. 10B is an enlarged view of the vicinity of the first connection end 234a and the second connection end 234b of the support body 23 in a state in which the connection between the connectors 241, 242 is released.

[0055] The power transmitting coil 24 has connectors 241 and 242. As shown in Figures 10A and 10B, the connector 241 is disposed on the side of the first connection end 234a, and the connector 242 is disposed on the side of the second connection end 234b. The connectors 241 and 242 are detachable from each other.

[0056] As shown in FIG. 10A, by connecting connector 241 from above connector 242, power transmission coil 24 is formed into a ring shape as a whole, and first connection end 234a and second connection end 234b overlap each other to form hole 234 that is approximately circular in plan view.

[0057] 10B, by separating the connector 241 and the connector 242, the annular state of the power transmitting coil 24 is released, and the first connection end 234a and the second connection end 234b of the support body 23 are separated. This makes it possible to remove the power transmitting unit 22 from the body surface 101, using the gap formed by releasing the annular state of the power transmitting coil 24, while avoiding contact with the injection needle inserted into the body surface 101.

[0058] [Procedure for injecting medicinal liquid into the body of the target living body 100 using the medical device 1] Next, a procedure for injecting a medicinal liquid into the body of a target living organism 100 using the medical device 1 will be described. Fig. 11A is a first schematic diagram showing a state before the injection needle 30 is inserted into the body surface 101, Fig. 11B is a second schematic diagram showing a state in which the injection needle 30 has been inserted into the soft portion 13, and Fig. 11C is a third schematic diagram showing a state in which the power transmission unit 22 is removed from the body surface 101.

[0059] 11A, the user attaches the power transmission unit 22 to the body surface 101 via the adhesive portion 233 so that the hole 234 of the power transmission unit 22 is located above the medical instrument 10 implanted in the body of the target living organism 100. The user presses the input portion 213 of the power supply device 20 to supply power from the power supply unit 212 of the housing portion 21 to the power transmission coil 24 of the power transmission unit 22. At this time, the power transmission coil 24 generates a magnetic flux using the power supplied from the power supply unit 212 via the first connection portion 211 and the second connection portion 25.

[0060] When the relative positional relationship between the medical instrument 10 and the power supply device 20 reaches a predetermined range, an induced electromotive force is generated in the power receiving coil 151 by the magnetic flux generated from the power transmitting coil 24. Then, the power receiving circuit 152 receives the power generated from the power receiving coil 151 and outputs it to the light-emitting unit 16. That is, power is supplied from the power supply device 20 to the medical instrument 10 by non-contact power supply using an electromagnetic induction method. As a result, light L is irradiated onto the upper surface of the soft part 13 from the multiple light-emitting units 16, as shown in FIG. 11A.

[0061] Next, as shown in FIG. 11B, the user inserts the injection needle 30 of the drip device (not shown) containing the medicinal liquid into the soft part 13 located below the body surface 101. Specifically, the injection needle 30 is inserted into the center of the four points on the body surface 101 illuminated by the light L emitted from each light emitting unit 16. Since the light L from the light emitting unit 16 can be used as a marker for puncturing, the medicinal liquid can be easily injected into the medicinal liquid container 12. In addition, since the power supply device 20 can be attached to the body surface 101 via the adhesive part 233, the user can use both hands to perform the puncturing operation. Therefore, the medicinal liquid can be more easily injected into the medical device 10 embedded in the body of the target living body 100.

[0062] In this manner, in the present embodiment, the light-emitting unit 16 is caused to emit light by power supplied from the power transmitting coil 24 to the power receiving coil 151 by contactless power supply, and the light notifies the user of the position of the soft part 13. The user can grasp the position of the soft part 13 by using this notified light as a clue.

[0063] Furthermore, when the injection needle 30 is inserted into the soft portion 13, the user presses the input portion 213 of the power supply device 20 to stop the supply of power from the power source portion 212 to the power transmission coil 24. Then, the connection between the first connection portion 211 and the second connection portion 25 is released, and the housing portion 21 is separated from the power transmission portion 22.

[0064] 11C , when the user separates the connectors 241, 242 to release the annular state of the power transmitting coil 24, the first connection end 234a and the second connection end 234b of the support body 23 are separated from each other. Then, by using the gap created by releasing the annular state of the power transmitting coil 24, the power transmitting unit 22 is removed from the body surface 101 so that the injection needle 30 inserted into the body surface 101 does not come into contact with the support body 23.

[0065] After removing the power transmission unit 22 from the body surface 101, the user starts injecting the medicinal liquid from the drip device into the medical instrument 10.

[0066] In the first embodiment, the power supply device 20 includes a power transmission coil 24 that supplies power contactlessly from outside the body via a power receiving coil 151 of the implantable medical device 10 into which a medicinal solution is injected from outside the body, a support 23 that supports the power transmission coil 24, and an adhesive part 233 formed on the body surface 101 side of the support 23. This allows the power supply device 20 to be attached to the body surface 101 via the adhesive part 233, allowing the user to perform a puncture operation using both hands. Therefore, the puncture operation can be easily performed while power is being supplied to the medical device 10.

[0067] Moreover, in the first embodiment, the device further includes a deformable elastic deformation part 232 that is disposed between the support 23 and the adhesive part 233. This allows the elastic deformation part 232 to achieve excellent conformability to the irregularities of the body surface 101 of the target living body 100.

[0068] Furthermore, in the first embodiment, the adhesive strength of adhesive portion 233 is typically 0.9 N / cm to 7.7 N / cm. With this, since the adhesive strength is within the range of 0.9 N / cm to 7.7 N / cm, power transmission unit 22 can be attached to body surface 101 more reliably, and power transmission unit 22 can be easily removed from body surface 101.

[0069] In addition, in the first embodiment, support 23 and adhesive part 233 are sterilized. As a result, adhesive part 233 that comes into contact with body surface 101 and support 23 located in the vicinity of the puncture site are sterilized, so cleanliness can be ensured when puncturing.

[0070] Moreover, in the first embodiment, the support 23 has a hole 234 through which the injection needle 30 for injecting a medicinal solution can be inserted, and the power transmitting coil 24 is arranged in a ring shape so as to surround the hole 234. As a result, the power transmitting coil 24 is arranged so as to surround the hole 234 through which the injection needle 30 can be inserted, and therefore, by supplying power with the medical device 10 positioned inside the hole 234 in a plan view, the magnetic flux generated from the power transmitting coil 24 can be transmitted to the medical device 10 more reliably. Therefore, higher power supply efficiency can be achieved.

[0071] Moreover, in the first embodiment, the power transmission coil 24 is configured to be able to release the annular state by the connectors 241, 242. As a result, even in a state in which an injection needle 30 of an infusion device or the like is inserted into the soft portion 13 through the hole 234 surrounded by the power transmission coil 24, the power supply device 20 can be easily removed from the body surface 101 by releasing the annular state of the power transmission coil 24. As a result, high power supply efficiency can be achieved, and by removing the power supply device 20 from the body surface 101 after the puncture operation, the burden on the target living body 100 during injection of a medicinal solution can be reduced.

[0072] Moreover, in the first embodiment, the diameter of the hole 234 of the support 23 is 5 cm or more. As a result, even if the power transmission unit 22 is attached to the body surface 101 so that the soft part 13 is located inside the hole 234 in a plan view, a space can be secured for the user to grasp the medical instrument 10 with his / her hand so as not to move when performing a puncturing operation. Furthermore, when the injection needle 30 is inserted so as to pass through the vicinity of the center of the hole 234, a sufficient gap can be provided between the injection needle 30 and the power transmission unit 22, and cleanliness around the injection needle 30 can be ensured.

[0073] In the first embodiment, the medical device 1 includes a power supply device 20 and an implantable medical device 10. The medical device 10 includes a soft portion 13 through which an injection needle 30 for injecting a medical solution is inserted, a medical solution container 12 having an opening 12a closed by the soft portion 13 and receiving the medical solution injected from the injection needle 30, and a power receiving unit 15 capable of receiving power supplied from a power transmission coil 24 of the power supply device 20 in a non-contact manner using a power receiving coil 151. This allows the power supply device 20 to be attached to the target living body 100 by the adhesive portion 233, so that the injection needle 30 can be inserted into the soft portion 13 using both hands while power is being supplied from the power supply device 20 to the power receiving unit 15. This allows the puncture operation to be easily performed while power is being supplied to the medical device 10.

[0074] Moreover, in the first embodiment, the medical instrument 10 further includes a light emitting unit 16 that emits light using the power received by the power receiving unit 15. As a result, light L is emitted from the light emitting unit 16 using the power supplied from the power supply device 20, so that the site on the body surface 101 where the injection needle 30 is to be inserted can be easily identified.

[0075] Furthermore, in the first embodiment, the diameter of hole 234 of power supply device 20 is longer than the outer diameter of soft part 13, and the radius of hole 234 is longer than the distance between the center of soft part 13 and light-emitting part 16 in a planar view. As a result, even if power transmission unit 22 is attached to body surface 101 such that soft part 13 is located inside hole 234 in a planar view, if the center of hole 234 and the center of soft part 13 coincide in a planar view, light-emitting part 16 will be located inside hole 234, and light L emitted from light-emitting part 16 can be more reliably viewed.

[0076] (Embodiment 2) Next, a description will be given of a second embodiment of the present disclosure, while referencing the description of the first embodiment. In the following description, the same components as those in the first embodiment will be denoted by the same reference numerals, and the description will be omitted or simplified, and differences will be mainly described.

[0077] In the above-described first embodiment, the hole 234 is provided at the center of the power transmission coil 24 in the power transmission section 22, but the present invention is not limited to this and the shape of the power transmission section can be changed as appropriate.

[0078] 12 is a schematic diagram showing a schematic configuration of power transmission section 22A according to embodiment 2. Power transmission section 22A has support body 23A, an adhesive section 233, an elastic deformation section 232, power transmission coil 24A, and a second connection section 25. Power transmission section 22A differs from power transmission section 22 mainly in the configurations of support body 23A and power transmission coil 24A.

[0079] The support 23A is in the form of a long and narrow plate, and both ends in the longitudinal direction are formed in an arc shape. The support 23A has a cutout portion 235 cut out on one side in the longitudinal direction so that an injection needle can be inserted therethrough.

[0080] The cutout portion 235 is cut from approximately the center in the width direction of the support 23A toward the outer edge. In this embodiment, the cutout portion 235 includes an opening 235a that is approximately circular in plan view and a path 235b that is formed from the opening 235a to the outer edge of the support 23A.

[0081] The power transmitting coil 24A is formed to match the shape of the notch 235. The power transmitting coil 24A is disposed on the support 23A so that the current E1 separates the opposing portions of the current E1 from each other, so that the current E1 does not cancel out the reverse magnetic flux B1. Specifically, particularly in the portion where the notch 235 is formed, the width R4 of the support 23A may be formed to be equal to or larger than the diameter R3 of the opening 235a (R4≧R3). As shown in FIG. 12, the power transmitting coil 24A is preferably covered with a conductive sheet X except for the portion formed near the notch 235. The conductive sheet X serves as a shield, and can shield the power transmitting coil 24A from radiating a magnetic field to the outside except for the portion formed near the notch 235, and can prevent this portion from interacting with the power receiving coil 151. The conductive sheet X may be, for example, a metal sheet.

[0082] In the second embodiment, the support 23A has a cutout 235 cut out so that a syringe needle for injecting a medical solution can be inserted therethrough, and the power transmitting coil 24A is formed to match the shape of the cutout 235. As a result, the cutout 235 through which a syringe needle can be inserted is formed in the support 23A, so that even when a syringe needle of a drip device or the like is inserted into the soft part 13 via the cutout 235, the power transmitting unit 22A can be easily removed from the body surface 101 of the target living organism 100. Furthermore, since the support 23A and the power transmitting coil 24A can be removed from the body surface 101 without deforming them, the power transmitting unit 22A can be used repeatedly, and costs can be reduced.

[0083] (Embodiment 3) Next, a description will be given of embodiment 1 of the present disclosure while referencing the description of embodiment 1 above. In the following description, the same components as those in embodiment 1 above are denoted by the same reference numerals, and descriptions thereof will be omitted or simplified, and differences will be mainly described.

[0084] 13 is a plan view showing power transmission section 22B according to embodiment 3. Power transmission section 22B has support body 23B, an adhesive section 233, an elastic deformation section 232, power transmission coil 24B, and a second connection section 25. Power transmission section 22B differs from power transmission section 22 mainly in the configurations of support body 23B and power transmission coil 24B.

[0085] The support 23B is in the form of a long and narrow plate, and both ends in the longitudinal direction are formed in an arc shape. The support 23B is realized using, for example, a nonwoven fabric. The support 23 is formed by sandwiching the power transmission coil 24B and the second connection part 25 between two sheets of nonwoven fabric.

[0086] On one side in the longitudinal direction of support 221B, hole 234B, which is an opening through which an injection needle can be inserted, is formed. Hole 234 of support 23 in embodiment 1 is configured so that the annular state is released when overlapping first connection end 234a and second connection end 234b move away from each other, but support 23B has a structure in which the periphery of hole 234B is continuous without interruption.

[0087] Power transmission coil 24B is a planar coil provided in a ring shape around hole 234B. Power transmission coil 24B generates a magnetic flux in response to the power input from housing 21 via second connection portion 25. Power transmission coil 24 in the first embodiment is configured to be able to release the ring-shaped state by connectors 241, 242, but power transmission coil 24B does not have connectors 241, 242 and is configured such that the ring-shaped state cannot be released.

[0088] Furthermore, the power transmitting section 22B is configured so as to be able to transmit power to the power receiving section 15 of the medical instrument 10 even if the distance from the center of the soft section 13 to the power transmitting section 22B in a plan view is 2.5 cm or more.

[0089] Next, an example of use of the power supply device 20B having the power transmission unit 22B for supplying power to the medical instrument 10 implanted in the body of the target living body 100 will be described. Fig. 14 is a schematic diagram showing a state in which the power transmission unit 22B is attached to the target living body. Note that in Fig. 14, the illustration of the housing unit 21 of the power supply device 20B is omitted.

[0090] 14, a user attaches power transmission unit 22B via adhesive portion 233 to body surface 101 in the vicinity of medical device 10 embedded in the body of a target living organism 100. In FIG. 14, support body 23B is disposed so that soft portion 13 is located outside hole 234B in a plan view.

[0091] When the user presses the input unit 213 to generate magnetic flux B2 from the power transmitting coil 24B, an induced electromotive force is generated from the power receiving coil 151, and light is irradiated from the light emitting unit 16 onto the upper surface of the soft part 13. Then, the user inserts the injection needle into the soft part 13 located below the body surface 101, using the light from the light emitting unit 16 as a guide.

[0092] 11A to 11C of the first embodiment, the power transmission unit 22 is affixed to the body surface 101 such that the hole 234 surrounds the soft portion 13 in a planar view, and therefore it is necessary to insert the injection needle 30 into the hole 234 to puncture it. In contrast, in the use example of Fig. 14, the injection needle 30 inserted into the soft portion 13 is positioned outside the hole 234B in a planar view, and therefore the power transmission unit 22B can be easily removed from the body surface 101 without coming into contact with the injection needle 30.

[0093] (Embodiment 4) Next, a fourth embodiment of the present disclosure will be described while referring to the description of the first embodiment. In the following description, the same components as those in the first embodiment will be denoted by the same reference numerals, and the description thereof will be omitted or simplified, and differences will be mainly described.

[0094] Fig. 15 is a perspective view showing power transmission unit 22C according to embodiment 4. Fig. 16 is a cross-sectional view of power transmission unit 22C taken along line BB shown in Fig. 15. Fig. 17 is a schematic diagram showing a state in which power transmission unit 22C is attached to a target living body. Note that in Fig. 17, illustration of housing 21 of power supply device 20C is omitted.

[0095] Power transmission unit 22C has support body 23C, an adhesive portion 233, an elastic deformation portion 232, a cover portion 236, power transmission coil 24C, and a second connection portion 25. Power transmission unit 22C differs from power transmission unit 22 mainly in the configurations of support body 23C and power transmission coil 24C, and in the inclusion of cover portion 236.

[0096] 15, support 23C is a plate-like member curved in an arc shape in a plan view. Power transmission coil 24C and second connection part 25 are disposed on the upper surface (the surface opposite to body surface 101) of support 23C.

[0097] Cover portion 236 is a cover that covers the upper and side portions of power transmission coil 24C that is disposed on the upper surface of support body 23C.

[0098] The power transmitting coil 24C is a solenoid coil formed in a three-dimensional spiral shape. The power transmitting coil 24C is formed in a cylindrical shape as a whole. The power transmitting coil 24C generates a magnetic flux B3 in response to the power input from the housing 21 via the second connection part 25.

[0099] The power transmitting coil 24C is formed so as to extend in an arc shape on the upper surface of the support 23C in accordance with the shape of the support 23C. The power transmitting coil 24C is disposed on the support 23C so that the axial direction of the power transmitting coil 24C is approximately parallel to the adhesive portion 233.

[0100] As shown in FIG. 15, magnetic flux B3 generated from the power transmission coil 24C exits from one axial end of the power transmission coil 24C, flows along the inner periphery of the support 23C toward the other axial end, and then flows into the power transmission coil 24C from the other axial end.

[0101] Furthermore, the power transmitting unit 22C is configured to generate magnetic flux B3 and transmit power to the power receiving unit 15 of the medical instrument 10 even if the distance D2 from the center C of the soft portion 13 to the power transmitting unit 22C in a plan view is 2.5 cm or more. This allows a sufficient gap to be provided between the injection needle 30 and the power transmitting unit 22C when the injection needle 30 is inserted into the center C of the soft portion 13, ensuring cleanliness around the injection needle 30.

[0102] Next, an example of use of the power supply device 20C having the power transmission section 22C for supplying power to the medical instrument 10 implanted in the body of the subject living body 100 will be described.

[0103] As shown in Fig. 17, the user attaches power transmission unit 22C via adhesive portion 233 to body surface 101 near medical device 10 embedded in the body of target living organism 100. Specifically, as shown in Fig. 17, power transmission unit 22C is attached so that power receiving unit 15 is located on the inner periphery side of support body 23C in plan view. At this time, power transmission unit 22C is attached at a position such that a gap of 2.5 cm or more is provided between the center of soft portion 13 and power transmission unit 22C in plan view, and power transmission unit 22C can be transmitted to power receiving unit 15 of medical device 10.

[0104] When the user presses the input unit 213 to generate magnetic flux B3 from the power transmitting coil 24C, an induced electromotive force is generated from the power receiving coil 151, and light is irradiated from the light emitting unit 16 onto the upper surface of the soft part 13. Then, the user inserts the injection needle 30 into the soft part 13 located below the body surface 101, using the light from the light emitting unit 16 as a guide.

[0105] In the fourth embodiment, the power transmitting coil 24C is formed in a three-dimensional spiral shape. This allows power to be supplied from the power transmitting unit 22C to the medical instrument 10 without surrounding the soft portion 13 of the medical instrument 10 in a plan view. Therefore, the injection needle inserted into the soft portion 13 is positioned outside the power transmitting unit 22C, so that the power transmitting unit 22C can be easily removed from the body surface 101 even in a state where the injection needle is inserted into the soft portion 13.

[0106] (Embodiment 5) Next, a fifth embodiment of the present disclosure will be described while referring to the description of the fourth embodiment. In the following description, the same components as those in the fourth embodiment will be denoted by the same reference numerals, and the description thereof will be omitted or simplified, and differences will be mainly described.

[0107] Fig. 18 is a perspective view showing a power transmission unit 22D according to embodiment 5. Fig. 19 is a cross-sectional view of power transmission unit 22D taken along line CC shown in Fig. 18. Fig. 20 is a schematic diagram showing a state in which power transmission unit 22D is attached to a target living organism. Note that in Fig. 20, illustration of housing 21 of power supply device 20D is omitted.

[0108] Power transmission unit 22D has support body 23D, adhesive portion 233, elastic deformation portion 232, cover portion 236, power transmission coil 24D, second connection portion 25, cylindrical body 26, and core material 27. Power transmission unit 22D differs from power transmission unit 22C mainly in the shape of support body 23D, the configuration of power transmission coil 24D, and the inclusion of cylindrical body 26 and core material 27.

[0109] 18, support 23D has a long and narrow plate shape. Support 23C according to the fourth embodiment is formed in an arc shape in a plan view, but support 23D is formed in a straight line shape in a plan view. Power transmitting coil 24D and second connection part 25 are disposed on the upper surface (the surface opposite to body surface 101) of support 23D.

[0110] The cylindrical body 26 is a member having a cylindrical shape, and the winding of the power transmission coil 24D is wound around the outer circumferential surface of the cylindrical body 26. The cylindrical body 26 is disposed along the longitudinal direction of the support body 23D.

[0111] 18, the core material 27 is located on the central axis of the cylindrical body 26 in a cross-sectional view and extends in the axial direction of the cylindrical body 26. Examples of the material of the core material 27 include ferrite.

[0112] The power transmitting coil 24D is a helical coil wound around the cylindrical body 26 and formed into a three-dimensional spiral shape. The power transmitting coil 24D is formed into a cylindrical shape as a whole. The power transmitting coil 24D generates a magnetic flux B4 in response to the power input from the housing 21 via the second connection part 25.

[0113] Power transmission coil 24D is wound more loosely than power transmission coil 24C, and has magnetic core material 27 disposed on its central axis. Power transmission unit 22D having such a configuration can generate magnetic flux B4 that rotates around the outside of power transmission unit 22D, centered on the winding of power transmission coil 24D, as shown in FIG.

[0114] Furthermore, the power transmitting section 22D is configured to generate magnetic flux B4 and transmit power to the power receiving section 15 of the medical instrument 10 even if the distance from the center of the soft section 13 to the power transmitting section 22D in a planar view is 2.5 cm or more.

[0115] Next, an example of use of the power supply device 20D having the power transmission section 22D for supplying power to the medical instrument 10 implanted in the body of the subject living organism 100 will be described.

[0116] 20, the user attaches power transmission unit 22D via adhesive portion 233 to body surface 101 in the vicinity of medical device 10 embedded in the body of a target living organism 100. Specifically, power transmission unit 22D is attached at a position such that a gap of 2.5 cm or more is provided between center C of soft portion 13 and power transmission unit 22D in a plan view, and power transmission unit 22D can be transmitted to power receiving unit 15 of medical device 10.

[0117] When the user presses the input unit 213 to generate magnetic flux B4 from the power transmitting coil 24D, an induced electromotive force is generated from the power receiving coil 151, and light is irradiated from the light emitting unit 16 onto the upper surface of the soft part 13. Then, the user inserts the injection needle 30 into the soft part 13 located below the body surface 101, using the light from the light emitting unit 16 as a guide.

[0118] In embodiment 5, the injection needle inserted into the soft portion 13 is positioned outside the power transmission portion 22D, so that the power transmission portion 22D can be easily removed from the body surface 101 even when the injection needle 30 is inserted into the soft portion 13.

[0119] (Other embodiments) In the above-mentioned embodiments 1 to 5 of the present disclosure, when the relative positional relationship between the medical instrument and the power supply device reaches a predetermined state by using a magnetic induction method, the light-emitting unit 16 is caused to emit light to notify the user of the position of the soft unit 13, but this is not limited to this, and the present disclosure may also be applied to a magnetic field resonance method, a radio wave reception method, and an electric field coupling method.

[0120] Furthermore, in the above-described first to fifth embodiments of the present disclosure, the power transmission unit and the housing unit are separate bodies, but the present invention is not limited to this, and the power transmission unit and the housing unit may be integrated.

[0121] In addition, in the above-mentioned embodiments 1 to 5 of the present disclosure, the power transmission unit and the housing unit are electrically connected to each other to supply power to the power transmission unit, but this is not limited to this, and power may be supplied from the housing unit to the power transmission unit by, for example, wireless power supply.

[0122] In addition, in the above-described first to fifth embodiments of the present disclosure, the power supply unit is provided in the housing unit, but the present invention is not limited to this, and the power supply unit may be provided in the power transmission unit, for example. The power supply unit is configured to include a battery as a power source, but a power cable may be provided instead of the battery, and power may be obtained via the power cable connected to an external power source.

[0123] Moreover, various inventions can be formed by appropriately combining a plurality of components disclosed in the medical devices according to the above-mentioned embodiments 1 to 5 of the present disclosure. For example, some components may be deleted from all the components described in the medical devices according to the above-mentioned embodiments 1 to 5 of the present disclosure. Furthermore, the components described in the medical devices according to the above-mentioned embodiments 1 to 5 of the present disclosure may be appropriately combined.

[0124] In addition, in the medical devices according to the first to fifth embodiments of the present disclosure, the above-mentioned "unit" can be read as "means" or "circuit," etc. For example, the control unit can be read as control means or control circuit.

[0125] In addition, the programs to be executed by the medical devices according to embodiments 1 to 5 of the present disclosure are provided as file data in an installable or executable format recorded on a computer-readable recording medium such as a CD-ROM, a flexible disk (FD), a CD-R, a Digital Versatile Disk (DVD), a USB medium, or a flash memory.

[0126] Although some of the embodiments of the present application have been described in detail above with reference to the drawings, these are merely examples, and the present invention can be embodied in other forms that incorporate various modifications and improvements based on the knowledge of those skilled in the art, including the forms described in the disclosure of the present invention. [Explanation of symbols]

[0127] 10 Medical Equipment 20 Power supply device 23 Support 24 Transmission coil 233 Adhesion 101 Body Surface

Claims

1. a power transmission coil for supplying power from outside the body in a non-contact manner via a coil of an implantable medical device into which a medicinal solution is injected from outside the body; A support that supports the power transmitting coil; and An adhesive portion formed on the body surface side of the target living body of the support; Equipped with the support has a hole through which a syringe needle for injecting a drug solution can be inserted, the power transmitting coil is disposed so as to surround the hole, The power transmission coil includes a first connector and a second connector that are detachable from each other between conductors that constitute the coil, and by connecting the first connector from above the second connector, the power transmission coil as a whole is formed in a ring shape so as to surround the hole of the support body, and by separating the first connector and the second connector, the ring shape of the power transmission coil is released. Power supply device.

2. The power supply device according to claim 1 , further comprising a deformable elastic deformation portion disposed between the support body and the adhesive portion.

3. The power supply device according to claim 1 , wherein the support and the adhesive portion are sterilized.

4. The power supply device according to claim 1 , wherein the power transmission coil is formed in a spiral shape.

5. A power supply device according to any one of claims 1 to 4, An implantable medical device; The medical device comprises: a soft portion through which an injection needle for injecting a medicinal solution is inserted; a syringe having an opening that is closed by the soft portion, the syringe receiving the drug solution injected from the injection needle; A liquid container; The power supplied from the power transmission coil of the power supply device is transmitted in a non-contact manner using a coil. A medical device comprising: a power receiving unit capable of receiving power.

6. The medical device according to claim 5 , wherein the medical instrument further comprises a light emitting unit that emits light.

7. A power supply device according to any one of claims 1 to 3, An implantable medical device; The medical device comprises: a soft portion through which an injection needle for injecting a medicinal solution is inserted; a syringe having an opening that is closed by the soft portion, the syringe receiving the drug solution injected from the injection needle; A liquid container; The power supplied from the power transmission coil of the power supply device is transmitted in a non-contact manner using a coil. A power receiving unit capable of receiving power; A light emitting unit that emits light, The diameter of the hole of the power supply device is longer than the outer diameter of the soft portion, and the radius of the hole is A medical device having a distance longer than the distance between the center of the soft portion and the light-emitting portion when viewed from above.

Images