Medical instrument that wirelessly receives power, insertion assisting tool that wirelessly transmits power and medical system

• US 10,321,901 B2
• Filed: 10/21/2016
• Issued: 06/18/2019
• Est. Priority Date: 04/21/2014
• Status: Active Grant

• Current Assignee: Olympus Corporation
• Original Assignee: Olympus Corporation
• Inventors: Matsui, Akira, Sugiyama, Yuta
• Primary Examiner(s): Leubecker, John P
• Application Number:
  US15/299,632
• Publication Number:
  US 20170035402A1
• Time in Patent Office: 970 Days
• CPC Class Codes: A61B 1/00029 externally powered, e.g. wireless
• CPC Class Codes: A61B 1/00114 Electrical cables in or with an endoscope
• CPC Class Codes: A61B 10/06 Biopsy forceps , e.g. with cup-shaped jaws
• CPC Class Codes: A61B 17/00234 for minimally invasive surgery A61B17/0218, A61B17/0469, A61B17/12013, A61B17/1285, A61B17/29, A61B17/320016 take precedence
• CPC Class Codes: A61B 17/16 Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans arthroscopic bone cutters A61B17/320016; dental implant drills potentially for other surgical use A61C8/0089; bone grinders A61F2/4644, A22C17/06; A61B17/1662 takes precedence over all other subgroups except A61B17/17
• CPC Class Codes: A61B 17/2202 the ultrasound transducer being inside patient's body at the distal end of the catheter
• CPC Class Codes: A61B 17/28 Surgical forceps for holding suture needles or materials A61B17/0483; for removing or smashing calculi A61B17/221; surgical scissors A61B17/3201 ; obstetrical forceps A61B17/44; for inserting intraocular lenses A61F2/1662; hand-held gripping tools in general B25B7/00 ]
• CPC Class Codes: A61B 17/320068 using mechanical vibrations, e.g. ultrasonic A61B17/22012 takes precedence; dental tooth drilling devices operated by vibration A61C3/03; removing intra-ocular material using mechanical vibrations A61F9/00745
• CPC Class Codes: A61B 17/34 Trocars; Puncturing needles pointed biopsy instruments A61B10/0233; devices for piercing the ear-lobes A44C7/001; seals or hemostasis valves A61M39/06
• 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 18/1206 Generators therefor
• CPC Class Codes: A61B 18/14 Probes or electrodes therefor
• CPC Class Codes: A61B 18/1442 Probes having pivoting end effectors, e.g. forceps
• CPC Class Codes: A61B 2017/320069 for ablating tissue
• CPC Class Codes: A61B 2017/32007 with suction or vacuum means
• CPC Class Codes: A61B 2017/320082 for incising tissue
• CPC Class Codes: A61B 2018/1286 having a specific transformer
• CPC Class Codes: A61N 7/00 Ultrasound therapy lithotripsy A61B17/22, A61B17/225; massage using supersonic vibration A61H23/00 ; using ultrasound for introducing media into the body A61M37/0092
• CPC Class Codes: H02J 2310/23 The load being a medical device, a medical implant, or a life supporting device
• CPC Class Codes: H02J 50/10 : using inductive coupling
• CPC Class Codes: H02J 50/12 : of the resonant type
• CPC Class Codes: H02J 50/402 : the two or more transmitting or the two or more receiving devices being integrated in the same unit, e.g. power mats with several coils or antennas with several sub-antennas
• CPC Class Codes: H02J 50/70 : involving the reduction of electric, magnetic or electromagnetic leakage fields

Abstract

A treatment instrument includes a power receiver and a treatment section configured to be driven by power received by the power receiver. The power receiver includes a first solenoid-shaped power receiving coil and a second solenoid-shaped power receiving coil having a winding direction opposite to a winding direction of the first power receiving coil. The first power receiving coil and the second power receiving coil have the same length and the same number of turns, and are arranged concentrically. The first power receiving coil and the second power receiving coil are electrically connected to a treatment section so that a direction in which a current flows through the first power receiving coil is opposite to a direction in which a current flows through the second power receiving coil.

Claims

1. A medical instrument comprising:

a power receiver comprising a power receiving circuit configured to magnetically couple with an alternating magnetic field and receive power; and

a drive circuit configured to be driven by the power received by the power receiver,

wherein the power receiver comprises a first solenoid-shaped power receiving coil and a second solenoid-shaped power receiving coil having a winding direction opposite to a winding direction of the first power receiving coil,

the first power receiving coil and the second power receiving coil have a same length and a same number of turns, and are arranged concentrically,

the first power receiving coil and the second power receiving coil are electrically connected to the power receiving circuit so that a direction in which a current flows through the first power receiving coil is opposite to a direction in which a current flows through the second power receiving coil; and

the first power receiving coil and the second power receiving coil are electrically connected in parallel.

2. The medical instrument according to claim 1, wherein the medical instrument is a treatment instrument or a rigid endoscope in which the first power receiving coil and the second power receiving coil are disposed at an insertion portion which is inserted into a body of a subject via an insertion hole of an insertion assisting tool.

3. An insertion assisting tool comprising a power transmitter configured to generate an alternating magnetic field to be applied to a medical instrument inserted into an insertion hole,

wherein the power transmitter comprises a first solenoid-shaped power transmitting coil and a second solenoid-shaped power transmitting coil having a winding direction opposite to a winding direction of the first power transmitting coil,

the first power transmitting coil and the second power transmitting coil have a same length and a same number of turns, and are arranged concentrically,

the first power transmitting coil and the second power transmitting coil are electrically connected to a power supply device so that a direction in which a current flows through the first power transmitting coil is opposite to a direction in which a current flows through the second power transmitting coil;

and

wherein the first power transmitting coil and the second power transmitting coil are electrically connected in parallel.

4. The insertion assisting tool according to claim 3, wherein the insertion assisting tool is a trocar, a case of which has the insertion hole.

5. A medical system comprising:

an insertion assisting tool comprising a power transmitter configured to generate an alternating magnetic field; and

a medical instrument comprising a power receiver comprising a power receiving circuit configured to magnetically couple with the alternating magnetic field when inserted into an insertion hole of the insertion assisting tool and receive power and a drive circuit configured to be driven by the power received by the power receiver,

wherein the power receiver comprises a first solenoid-shaped power receiving coil and a second solenoid-shaped power receiving coil having a winding direction opposite to a winding direction of the first power receiving coil,

the first power receiving coil and the second power receiving coil have a same length and a same number of turns and are arranged concentrically,

the first power receiving coil and the second power receiving coil are electrically connected to the power receiving circuit so that a direction in which a current flows through the first power receiving coil is opposite to a direction in which a current flows through the second power receiving coil; and

wherein the first power receiving coil and the second power receiving coil are electrically connected in parallel.

6. The medical system according to claim 5, wherein the first power receiving coil and the second power receiving coil are longer than a solenoid-shaped power transmitting coil of the power transmitter.

7. The medical system according to claim 6,

wherein the power transmitter comprises a first solenoid-shaped power transmitting coil and a second solenoid-shaped power transmitting coil having a winding direction opposite to a winding direction of the first power transmitting coil,

the first power transmitting coil and the second power transmitting coil have a same length and a same number of turns and are arranged concentrically, and

the first power transmitting coil and the second power transmitting coil are electrically connected to a power supply device so that a direction in which a current flows through the first power transmitting coil is opposite to a direction in which a current flows through the second power transmitting coil.

8. The medical system according to claim 7, wherein the first power transmitting coil and the second power transmitting coil are electrically connected in parallel.

9. The medical system according to claim 5,

wherein the medical instrument is a treatment instrument or a rigid endoscope, and

the insertion assisting tool is a trocar, a case of which has the insertion hole.