Device with a receiving antenna and a related power transfer system

• US 10,511,193 B2
• Filed: 09/30/2015
• Issued: 12/17/2019
• Est. Priority Date: 10/17/2014
• Status: Active Grant

• Current Assignee: Synoste Oy (Globus Medical, Inc.)
• Original Assignee: Synoste Oy (Globus Medical, Inc.)
• Inventors: Haaja, Juha Kalevi, Salden, Kevin Lambertus Hubertus, Hallila, Harri Olavi, Duarte, Jorge Luiz, Ritvanen, Antti Gabriel
• Primary Examiner(s): Barnie, Rexford N
• Assistant Examiner(s): Shiao, David A
• Application Number:
  US15/519,644
• Publication Number:
  US 20170244287A1
• Time in Patent Office: 1,539 Days
• CPC Class Codes: A61B 1/00029 externally powered, e.g. wireless
• CPC Class Codes: A61B 17/7216 for bone lengthening or compression A61B17/7258 takes precedence
• CPC Class Codes: A61B 2017/00411 actuated by application of energy from an energy source outside the body
• CPC Class Codes: A61B 2018/00565 Bone
• CPC Class Codes: A61B 90/98 using electromagnetic means, e.g. transponders
• CPC Class Codes: A61N 1/3787 from an external energy source
• CPC Class Codes: H01F 38/14 Inductive couplings for wireless supply or distribution of electric power using inductive coupling H02J50/10
• CPC Class Codes: H01Q 1/248 provided with an AC/DC converting device, e.g. rectennas
• CPC Class Codes: H01Q 7/08 Ferrite rod or like elongated core
• 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

Abstract

The present invention is about a device with a receiving antenna (110), wherein the receiving antenna (110) comprises a secondary coil (112), and being arranged for inductively connecting to a transmitting antenna (200) comprising a primary coil (202). The device of the invention is characterized in that the receiving antenna (110) further comprises a tertiary coil (114) arranged to have connection to a load in the device; and a capacitor (142) to which the secondary coil (112) is connected; and there is an encapsulation (120) comprising a low liquid permeability and non-conductive material encapsulating at least a part of the receiving antenna (110). Additionally, the present invention is about a power transfer system.

Claims

1. A device with a receiving antenna, wherein the receiving antenna comprises a secondary coil, and is arranged for inductively connecting to a transmitting antenna comprising a primary coil (202);

wherein the receiving antenna further comprises;

a tertiary coil arranged to have a connection to a load in the device;

a capacitor to which the secondary coil is connected; and

an encapsulation comprising a low liquid permeability and non-conductive material encapsulating at least the secondary coil and the capacitor such that the tertiary coil is being wound around the encapsulation and the secondary coil; and

wherein the receiving antenna is arranged to resonate substantially at the same frequency as the transmitting antenna; and

wherein the entire receiving antenna is enclosed by a casing.

2. The device of claim 1, wherein in the receiving antenna, there is an element including ferromagnetic material, for focusing the magnetic field of the transmitting antenna into the receiving antenna.

3. The device of claim 2, wherein the secondary coil is arranged to couple to the tertiary coil through the element for creating a transformer between the secondary coil and the tertiary coil.

4. The device of claim 1, wherein the secondary coil and the tertiary coil are arranged concentric one upon the other such that they couple.

5. The device of claim 1, wherein the secondary coil and the tertiary coil are arranged next to each other such that they couple.

6. The device of claim 1, wherein the said low liquid permeability and non-conductive material of the encapsulation comprises one of ceramics and plastic.

7. The device of claim 1, wherein at least one of the encapsulation and the casing includes an ultrasonic or laser welding for preventing any leakage.

8. A power transfer system including a transmitting antenna and the device of claim 1 located such that they are inductively connected.