MEDICAL WIRELESS POWER SUPPLY SYSTEM

• US 20150057653A1
• Filed: 11/10/2014
• Published: 02/26/2015
• Est. Priority Date: 06/26/2012
• Status: Abandoned Application

• Current Assignee: Olympus Corporation
• Original Assignee: Olympus Corporation
• Inventors: SUGIYAMA, Yuta
• Application Number:
  US14/537,080
• Publication Number:
  US 20150057653A1
• Time in Patent Office: Days
• US Class Current: 606/34
• CPC Class Codes: A61B 17/3421 Cannulas
• CPC Class Codes: A61B 17/3476 Powered trocars, e.g. electrosurgical cutting, lasers, powered knives
• CPC Class Codes: A61B 18/12 by passing a current through the tissue to be heated, e.g. high-frequency current
• CPC Class Codes: A61B 18/148 having a short, rigid shaft for accessing the inner body transcutaneously, e.g. for neurosurgery or arthroscopy
• CPC Class Codes: A61B 2017/3466 for simultaneous sealing of multiple instruments
• CPC Class Codes: A61B 2018/1286 having a specific transformer
• CPC Class Codes: A61B 2018/1415 multiple blades
• CPC Class Codes: H01B 3/30 plastics; resins; waxes
• CPC Class Codes: H01F 27/2823 Wires H01F27/2866 takes precedence
• CPC Class Codes: H01F 38/14 Inductive couplings for wireless supply or distribution of electric power using inductive coupling H02J50/10
• CPC Class Codes: H02J 2310/23 The load being a medical device, a medical implant, or a life supporting device
• CPC Class Codes: H02J 5/005 with inductive power transfer for charging H02J7/025
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/70 involving the reduction of electric, magnetic or electromagnetic leakage fields

Abstract

A medical wireless power supply system includes a trocar, a power transmission coil provided in a state in which at least a part thereof is covered with a nonconductive member, a power transmission coil unit including the power transmission coil and configured to be capable of resonating at a predetermined resonance frequency, a medical instrument including a cylindrical insertion portion insertable into an insertion hole of the trocar, a power reception coil provided in a state in which at least a part thereof is covered with a nonconductive member on an inside of the insertion portion, and a power reception coil unit including the power reception coil and configured to be capable of resonating at a resonance frequency that coincides with the predetermined resonance frequency.

Claims

1. A medical wireless power supply system comprising:

a trocar;

one or more power transmission coils provided in a state in which at least a part thereof is covered with a nonconductive member;

a power transmission coil unit including at least one of the power transmission coils and configured to be capable of resonating at a predetermined resonance frequency;

a medical instrument including a cylindrical insertion portion insertable into an insertion hole of the trocar;

a power reception coil provided in a state in which at least a part thereof is covered with a nonconductive member on an inside of the insertion portion; and

a power reception coil unit including the power reception coil and configured to be capable of resonating at a resonance frequency that coincides with the predetermined resonance frequency.

2. The medical wireless power supply system according to claim 1, wherein a winding axis of the power transmission coil and an insertion axis of the insertion hole are parallel.

3. The medical wireless power supply system according to claim 1, wherein

the trocar includes a trocar main body portion and the power transmission coil unit configured to be detachably attachable to the trocar main body portion, and

when the power transmission coil unit is attached to the trocar main body portion, the power transmission coil is arranged in a vicinity of the insertion hole and a winding axis of the power transmission coil and an insertion axis of the insertion hole are parallel.

4. The medical wireless power supply system according to claim 1, wherein the power transmission coil is provided to generally cover a portion ranging from a vicinity of an opening portion on an inlet side of the insertion hole to a vicinity of an opening portion on an outlet side on an inside of the trocar.

5. The medical wireless power supply system according to claim 1, wherein a winding axis of the power reception coil and a major axis of the insertion portion are parallel.

6. The medical wireless power supply system according to claim 1, wherein the power reception coil is provided in a portion ranging from a distal end side to a rear end side of the insertion portion.

7. The medical wireless power supply system according to claim 1, wherein the power reception coil is provided in a position arranged near an opening portion on an inlet side of the insertion hole when the insertion portion is inserted through the insertion hole.

8. The medical wireless power supply system according to claim 1, wherein the insertion portion is configured by providing the power reception coil on an inside of a cylinder including a tube portion formed by a conductive member and an insulating portion formed by providing an insulating member along a major axis direction of the tube portion.

9. The medical wireless power supply system according to claim 1, wherein the insertion portion is configured by providing the power reception coil in an outer circumference portion of a cylinder including a tube portion formed by a conductive member and an insulating portion formed by providing an insulating member along a major axis direction of the tube portion.

10. The medical wireless power supply system according to claim 8, wherein the tube portion is formed by laminating two or more members having different electric conductivities to each other.

11. The medical wireless power supply system according to claim 1, wherein one or more relay coil units configured to be capable of resonating at a resonance frequency coinciding with the predetermined resonance frequency are provided on an inside of the insertion portion.

12. The medical wireless power supply system according to claim 1, wherein the trocar is configured such that a conductive partition member formed to have sufficiently large width and height with respect to a diameter and height of the power transmission coil can be attached to and detached from the trocar.

13. The medical wireless power supply system according to claim 1, wherein, on an inside of the trocar, a conductive partition member having a shape capable of generally covering an outer circumference portion of the power transmission coil and formed to include an insulating portion in a part of an outer circumference is provided.

14. The medical wireless power supply system according to claim 1, wherein

a cylinder is provided in a portion ranging from a vicinity of the power transmission coil to an opening portion on an outlet side of the insertion hole on an inside of the trocar,

the cylinder includes a tube portion formed by a conductive member and an insulating portion formed by providing an insulating member along a major axis direction of the tube portion, and

the cylinder is provided around the insertion hole and on an inner side of the power transmission coil on the inside of the trocar.

15. The medical wireless power supply system according to claim 1, wherein

a cylinder is provided in a portion ranging from a vicinity of the power transmission coil to an opening portion on an outlet side of the insertion hole on an inside of the trocar,

the cylinder includes a tube portion formed by a conductive member and an insulating portion formed by providing an insulating member along a major axis direction of the tube portion, and

the cylinder is provided around the insertion hole and on an outer side of the power transmission coil on the inside of the trocar.

16. The medical wireless power supply system according to claim 1, further comprising:

a plurality of the power transmission coils provided in a vicinity of the insertion hole; and

a plurality of the power transmission coil units each including any one of the plurality of power transmission coils and respectively configured to resonate at different resonance frequencies to one another.

17. The medical wireless power supply system according to claim 1, further comprising:

a plurality of the power transmission coils provided one each in each of a plurality of the insertion holes of the trocar; and

a plurality of the power transmission coil units each including any one of the plurality of power transmission coils and respectively configured to resonate at different resonance frequencies to one another.

18. The medical wireless power supply system according to claim 1, further comprising:

a plurality of the power transmission coils provided one each in each of a plurality of the insertion holes of the trocar;

a plurality of the power transmission coil units each including any one of the plurality of power transmission coils and respectively configured to resonate at a same resonance frequency as one another; and

a plurality of conductive partition members provided one each in each of the plurality of insertion holes, having a shape capable of generally covering outer circumference portions of the power transmission coils, and respectively formed to include insulating portions in parts of outer circumferences thereof

19. The medical wireless power supply system according to claim 1, further comprising:

a plurality of the power transmission coils provided to cover parts of outer circumference portions of a plurality of the insertion holes of the trocar; and

a plurality of the power transmission coil units each including any one of the plurality of power transmission coils and respectively configured to resonate at different resonance frequencies to one another.

20. The medical wireless power supply system according to claim 1, wherein

the power transmission coil includes a first coil provided on an inside of the trocar and a second coil arranged in a vicinity of a subject for whom the medical instrument is used, and

the first coil and the second coil are connected in series in a state in which the first coil and the second coil are wound such that generating directions of magnetic fields are not reversed.