WO2004026399A1 - Harmless wireless energy transmission to implant - Google Patents

Harmless wireless energy transmission to implant Download PDF

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Publication number
WO2004026399A1
WO2004026399A1 PCT/SE2003/001464 SE0301464W WO2004026399A1 WO 2004026399 A1 WO2004026399 A1 WO 2004026399A1 SE 0301464 W SE0301464 W SE 0301464W WO 2004026399 A1 WO2004026399 A1 WO 2004026399A1
Authority
WO
WIPO (PCT)
Prior art keywords
coil
transmission device
magnetic field
alternating magnetic
receiver
Prior art date
Application number
PCT/SE2003/001464
Other languages
French (fr)
Inventor
Peter Forsell
Original Assignee
Potencia Medical Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Potencia Medical Ag filed Critical Potencia Medical Ag
Priority to AU2003263710A priority Critical patent/AU2003263710B2/en
Priority to US10/527,989 priority patent/US20060155347A1/en
Priority to EP03797781A priority patent/EP1545702B1/en
Priority to MXPA05002819A priority patent/MXPA05002819A/en
Priority to CA2497906A priority patent/CA2497906C/en
Priority to DE60319106T priority patent/DE60319106T2/en
Publication of WO2004026399A1 publication Critical patent/WO2004026399A1/en

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N1/00—Electrotherapy; Circuits therefor
    • A61N1/18—Applying electric currents by contact electrodes
    • A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
    • A61N1/36—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
    • A61N1/372—Arrangements in connection with the implantation of stimulators
    • A61N1/378—Electrical supply
    • A61N1/3787—Electrical supply from an external energy source
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/0004—Closure means for urethra or rectum, i.e. anti-incontinence devices or support slings against pelvic prolapse
    • A61F2/0031—Closure means for urethra or rectum, i.e. anti-incontinence devices or support slings against pelvic prolapse for constricting the lumen; Support slings for the urethra
    • A61F2/0036—Closure means for urethra or rectum, i.e. anti-incontinence devices or support slings against pelvic prolapse for constricting the lumen; Support slings for the urethra implantable
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2250/0001—Means for transferring electromagnetic energy to implants
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N1/00—Electrotherapy; Circuits therefor
    • A61N1/18—Applying electric currents by contact electrodes
    • A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
    • A61N1/36—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
    • A61N1/362—Heart stimulators
    • A61N1/37—Monitoring; Protecting
    • A61N1/3718—Monitoring of or protection against external electromagnetic fields or currents

Definitions

  • the present invention relates to a transmission device and methods for transmission of an alternating magnetic field to a receiver implanted in a human's or animal's body to supply energy drawn from the alternating magnetic field to an energy consuming implant in the human's or animal's body.
  • Such a transmission device typically includes a coil that wirelessly co-operates with a coil of the implanted receiver. It has been found, however, that it is very unpleasant to a person to operate a handheld transmission device, because bad sensations occur in the person' s hand while the transmission device is transmitting the alternating magnetic field. These bad sensations were not reduced significantly when the transmission device was encapsulated in a plastic case with a certain distance between the hand and the coil. Probably, the alternating magnetic field somehow unfavorably influences the nerves of the hand. It is not possible to shield the hand from the magnetic field by providing a steel shield between the hand and the coil, because such a steel shield would shorten the magnetic field. Because of the above-noted problems, prior hand-held transmission devices of coil-to-coil type have not been commercialized.
  • the object of the present invention is to provide an alternating magnetic field transmission device, which at least significantly reduces or even prevents unpleasant sensations to a person's hand during manual operation of the transmission device.
  • Another object of the invention is to provide an apparatus for wireless transfer of energy including a magnetic field transmission device, which at least significantly reduces or even prevents unpleasant sensations to a person' s hand during manual operation of the transmission device.
  • Another object of the invention is to provide an apparatus for wireless transfer of energy including a magnetic field transmission device, which at least significantly reduces or even prevents environmental disturbances during operation of the transmission device.
  • Yet another object of the invention is to provide methods for harmless wireless transfer of energy to an energy consuming medical device implanted in a human's or animal's body.
  • a transmission device for transmitting an alternating magnetic field to a receiver, which is implanted in a human's or animal's body to supply energy drawn from the alternating magnetic field to an energy consuming implant in the human's or animal's body.
  • the transmission device comprises a coil adapted to generate the alternating magnetic field in a desired direction towards the implanted receiver, the coil having a longitudinal extension, a front end to be directed towards the receiver and a rear end to be directed away from the receiver.
  • the transmission device is characterized by a shield adapted to shield the environment, in particular an operator' s hand holding the transmission device, from the alternating magnetic field generated by the coil except at the front end of the coil.
  • the shield includes a magnetizable core extending in the coil and a magnetizable casing integrated with the core and surrounding the rear end of the coil and the circumference of the coil along at least a portion of the longitudinal extension of the coil.
  • the shield reduces the peaks or transients of the alternating magnetic field and the magnetic field itself in the direction towards, for example, an operator's hand while the transmission efficiency of the transmission device in the opposite direction, i.e. the direction towards the implanted receiver, is maintained.
  • the transmission efficiency of the transmission device in the opposite direction i.e. the direction towards the implanted receiver.
  • This improvement of the transmission device of the invention is of great significance, because the transmission device is intended for use daily by an operator, such as a doctor or nurse, to treat different patients with energy consuming implants, and a doctor or nurse would be very reluctant to use a transmission device that gives rise to the unpleasant hand sensations discussed above.
  • the casing may completely surround the coil except the front end thereof and the core may wholly extend along the longitudinal extension of the coil.
  • the casing may surround the circumference of the coil along a portion of the longitudinal extension of the coil and the core or/and coil may extend past the casing along the longitudinal extension of the coil, as seen in the direction towards the front end of the coil.
  • the casing includes a circular cylindrical wall and a circular gable wall joined to the cylindrical 'wall.
  • the core extends centrally in the cylindrical wall from the gable wall and the coil is applied on the core with the rear end of the coil facing the gable wall.
  • the cylindrical wall may be provided with cutouts, in order not to reduce the effective magnetic field too much.
  • the cylindrical wall may be shorter than the core.
  • the cylindrical wall may extend axially from the gable wall along half the length of the core or a third of the length of the core. Depending on the strength of the transmitted magnetic field the length of the cylindrical wall may be more reduced or even eliminated.
  • the coil may be shorter or longer than the core and/or the cylindrical wall.
  • the shield preferably is made of ferrite or similar magnetizable material.
  • the transmission device suitably includes a plastic box, in which the coil and shield are arranged such that they are located at a distance, in the order of centimeters, from the operator's hand, when the operator holds the transmission device.
  • an apparatus for wireless transfer of energy from outside a human's or animal's body to an energy consuming medical device implanted in the human's or animal's body comprises a transmission device operable from outside the human's or animal's body for transmission of an alternating magnetic field, and a receiver implantable in the human' s or animal' s body for receiving and for drawing energy from the alternating magnetic field to be supplied to the energy consuming implanted medical device.
  • the transmission device includes at least one coil for generating the alternating magnetic field in a desired direction towards the receiver, the coil having a longitudinal extension, a front end to be directed towards the receiver and a rear to be directed away from the receiver.
  • the apparatus is characterized by at least one shield adapted to shield the environment from the alternating magnetic field generated by the coil except at the front end of the coil.
  • the shield includes a magnetizable core extending in the coil and a magnetizable casing integrated with the core and surrounding the rear end of the coil and the circumference of the coil along at least a portion of the longitudinal extension of the coil.
  • the transmission device of the apparatus may be designed in accordance with the embodiments described above in connection with the first aspect of the invention.
  • the transmission device may include two identical transmitters that are to be placed at different sides of the implanted receiver, for example on the human's abdomen and back.
  • the two transmitters may also be placed on a stand relative to the human' s or animal' s body so that the two transmitters are in the desired positions for transmitting the alternating magnetic fields towards the implanted receiver.
  • the apparatus may be used for supplying energy to implanted medical devices, such as adjustable restriction devices for treating obesity, heartburn and reflux disease, urinary and anal incontinence, infusion pumps, muscle stimulators, impotence or other wireless transfer of energy to implants.
  • implanted medical devices such as adjustable restriction devices for treating obesity, heartburn and reflux disease, urinary and anal incontinence, infusion pumps, muscle stimulators, impotence or other wireless transfer of energy to implants.
  • the invention also provides a method for harmless wireless transfer of energy to an energy consuming medical device implanted in a human's or animal's body.
  • the method comprises: implanting in the human or animal a receiver capable of receiving and drawing energy from an alternating magnetic field to be supplied to the energy consuming medical device; manually holding external to the body a transmission device capable of transmitting the alternating magnetic field, the transmission device including a coil having a longitudinal extension, a front end directed away from the hand holding the transmission device and a rear end facing the hand holding the transmission device; and transmitting by means of the transmission device the alternating magnetic field to the implanted receiver.
  • the method is characterized by shielding by means of a shield the hand holding the transmission device from the alternating magnetic field generated by the coil.
  • the shield includes a magnetizable core extending in the coil of the transmission device and a magnetizable casing integrated with the core of the transmission device and surrounding the rear end of the coil and the circumference of the coil along at least a portion of the longitudinal extension of the coil.
  • the present invention also provides another method for harmless wireless transfer of energy to an energy consuming medical device implanted in a human' s or animal's body, comprising: implanting in the human or animal a receiver capable of receiving and drawing energy from an alternating magnetic field to be supplied to the energy consuming medical device; providing an external transmission device capable of transmitting the alternating magnetic field and including a coil having a longitudinal extension, a front end and a rear end; positioning the transmission device relative to the body so that the front end of the coil is directed towards the receiver and the rear end of the coil is directed away from the receiver; and transmitting by means of the transmission device the alternating magnetic field to the implanted receiver.
  • the method is characterized by shielding by means of a shield the environment from the alternating magnetic field generated by the coil except at the front end of the coil.
  • the shield includes a magnetizable core extending in the coil of the transmission device and a magnetizable casing integrated with the core of the transmission device and surrounding the rear end of the coil and the circumference of the coil along at least a portion of the longitudinal extension of the coil.
  • FIG. 1 schematically illustrates an apparatus of the present invention
  • Figure 2 is a front view of a coil and shield of a hand-held transmission device according to an embodiment of the invention
  • Figure 3 is a cross-section along the line III-III in Figure 2
  • Figure 4 is a perspective view of a coil and shield of a hand-held transmission device according to another embodiment of the invention.
  • FIG 5 is a cross-section through the shield shown in Figure 4,
  • Figure 6 illustrates an embodiment of the apparatus of the invention used for transferring energy to an artificial sphincter applied on the rectum of an anal incontinent human being
  • Figure 7 is a modification of the embodiment according to Figure 6.
  • Figure 1 illustrates manual operation of an apparatus of the invention including an alternating magnetic field transmission device 1 held by an operator' s hand 2 and a receiver 3 subcutaneously implanted in a human's body 4.
  • the implanted receiver 3 is capable of receiving the alternating magnetic field transmitted by the transmission device 1 and of drawing energy from the alternating magnetic field to be supplied to an energy consuming medical device implanted in the body 4.
  • the transmission device 1 includes a plastic box 5 containing a coil
  • the coil 6 is situated in the lower part of the box 5 a few centimeters from the hand 2.
  • Figures 2 and 3 show a shield 7 of the apparatus for shielding the hand 2 from the alternating magnetic field including a ferrite core 8 extending in the coil 6 along the entire longitudinal extension thereof. (Alternatively, the coil 6 may be shorter than the core 8.)
  • a ferrite casing 9 is integrated with the core 8 and surrounds the top rear end of the coil 6 and the circumference of the coil 6 along the entire longitudinal extension of the coil 6.
  • the casing 9 includes a circular cylindrical wall 10 surrounding the coil 6 and a circular gable wall 11 joined to the cylindrical wall 10.
  • the shield 7 has a somewhat modified design, the position of the shield 7 being indicated in dotted lines.
  • the cylindrical wall 10 extends only halfway along the coil 6.
  • Figures 4 and 5 show a modified shield 12 that does not dampen the alternating magnetic field as much as the shield 7 of Figures 2 and 3.
  • the cylindrical wall 13 of the shield 12 is provided with several cutouts 14 evenly distributed around the circumference of the cylindrical wall 13.
  • the coil 6 is shorter than the core 8.
  • FIG 6 shows an embodiment of the apparatus used for an anal incontinent human.
  • the apparatus includes the transmission device 1 and a receiver 15 subcutaneously implanted in the human's body.
  • the receiver 15 supplies energy to an implanted operation device 16 that operates an artificial sphincter 17 applied on the human's rectum 18.
  • the transmission device 1 is held by an operator who puts it on the human' s skin substantially in front of the implanted receiver 15 to provide efficient energy transmission from the transmission device 1 to the receiver 15.
  • the embodiment shown in Figure 7 is identical to the embodiment shown in Figure 6, except that the transmission device 1 include two wireless energy transmitters 19 and 20, and the receiver and operation device are integrated in a single receiver/operation unit 21 located close to the artificial sphincter 17.
  • Each transmitter 19,20 may be designed as the transmission device 1 described above in connection with Figs. 1- 5.
  • the transmitters 19 and 20 are positioned at different sides of the implanted receiver/operation unit 21, suitably at opposite sides as illustrated in Figure 7, to transmit wireless energy to the receiver/operation unit 21.
  • two wireless energy transmitters may also be used for transmitting energy to the receiver 15 of the embodiment shown in Figure 6.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Urology & Nephrology (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • General Health & Medical Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Transplantation (AREA)
  • Vascular Medicine (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Cardiology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Radiology & Medical Imaging (AREA)
  • Electrotherapy Devices (AREA)
  • Magnetic Treatment Devices (AREA)
  • Materials For Medical Uses (AREA)

Abstract

A transmission device (1) transmits an alternating magnetic field to a receiver (3) implanted in a human’s body to supply energy drawn from the alternating magnetic field to an energy consuming implant in the human’s body. The transmission device comprises a coil (6) adapted to generate the alternating magnetic field in a desired direction towards the implanted receiver. A shield (7) shields an operator’s hand (2) from the alternating magnetic field generated by the coil. The shield includes a magnetizable core (8) extending in the coil (6) and a magnetizable casing (9) integrated with the core and surrounding the rear end of the coil and the circumference of the coil along at least a portion of the longitudinal extension of the coil.

Description

HARMLESS WIRELESS ENERGY TRANSMISSION TO IMPLANT
The present invention relates to a transmission device and methods for transmission of an alternating magnetic field to a receiver implanted in a human's or animal's body to supply energy drawn from the alternating magnetic field to an energy consuming implant in the human's or animal's body.
Such a transmission device typically includes a coil that wirelessly co-operates with a coil of the implanted receiver. It has been found, however, that it is very unpleasant to a person to operate a handheld transmission device, because bad sensations occur in the person' s hand while the transmission device is transmitting the alternating magnetic field. These bad sensations were not reduced significantly when the transmission device was encapsulated in a plastic case with a certain distance between the hand and the coil. Probably, the alternating magnetic field somehow unfavorably influences the nerves of the hand. It is not possible to shield the hand from the magnetic field by providing a steel shield between the hand and the coil, because such a steel shield would shorten the magnetic field. Because of the above-noted problems, prior hand-held transmission devices of coil-to-coil type have not been commercialized.
The object of the present invention is to provide an alternating magnetic field transmission device, which at least significantly reduces or even prevents unpleasant sensations to a person's hand during manual operation of the transmission device.
Another object of the invention is to provide an apparatus for wireless transfer of energy including a magnetic field transmission device, which at least significantly reduces or even prevents unpleasant sensations to a person' s hand during manual operation of the transmission device. Another object of the invention is to provide an apparatus for wireless transfer of energy including a magnetic field transmission device, which at least significantly reduces or even prevents environmental disturbances during operation of the transmission device.
Yet another object of the invention is to provide methods for harmless wireless transfer of energy to an energy consuming medical device implanted in a human's or animal's body.
Accordingly, in accordance with a first aspect of the present invention, there is provided a transmission device for transmitting an alternating magnetic field to a receiver, which is implanted in a human's or animal's body to supply energy drawn from the alternating magnetic field to an energy consuming implant in the human's or animal's body. The transmission device comprises a coil adapted to generate the alternating magnetic field in a desired direction towards the implanted receiver, the coil having a longitudinal extension, a front end to be directed towards the receiver and a rear end to be directed away from the receiver. The transmission device is characterized by a shield adapted to shield the environment, in particular an operator' s hand holding the transmission device, from the alternating magnetic field generated by the coil except at the front end of the coil. The shield includes a magnetizable core extending in the coil and a magnetizable casing integrated with the core and surrounding the rear end of the coil and the circumference of the coil along at least a portion of the longitudinal extension of the coil.
The shield reduces the peaks or transients of the alternating magnetic field and the magnetic field itself in the direction towards, for example, an operator's hand while the transmission efficiency of the transmission device in the opposite direction, i.e. the direction towards the implanted receiver, is maintained. As a result, the unpleasant hand sensations previously experienced by operators testing prior hand-held transmission devices are practically eliminated by the transmission device of the invention. This improvement of the transmission device of the invention is of great significance, because the transmission device is intended for use daily by an operator, such as a doctor or nurse, to treat different patients with energy consuming implants, and a doctor or nurse would be very reluctant to use a transmission device that gives rise to the unpleasant hand sensations discussed above.
The casing may completely surround the coil except the front end thereof and the core may wholly extend along the longitudinal extension of the coil.
Alternatively, the casing may surround the circumference of the coil along a portion of the longitudinal extension of the coil and the core or/and coil may extend past the casing along the longitudinal extension of the coil, as seen in the direction towards the front end of the coil.
In accordance with an embodiment of the present invention, the casing includes a circular cylindrical wall and a circular gable wall joined to the cylindrical 'wall. The core extends centrally in the cylindrical wall from the gable wall and the coil is applied on the core with the rear end of the coil facing the gable wall. The cylindrical wall may be provided with cutouts, in order not to reduce the effective magnetic field too much. Alternatively, the cylindrical wall may be shorter than the core. For example, the cylindrical wall may extend axially from the gable wall along half the length of the core or a third of the length of the core. Depending on the strength of the transmitted magnetic field the length of the cylindrical wall may be more reduced or even eliminated. The coil may be shorter or longer than the core and/or the cylindrical wall.' In all embodiments of the invention, the shield preferably is made of ferrite or similar magnetizable material.
The transmission device suitably includes a plastic box, in which the coil and shield are arranged such that they are located at a distance, in the order of centimeters, from the operator's hand, when the operator holds the transmission device.
In accordance with a second aspect of the present invention, there is provided an apparatus for wireless transfer of energy from outside a human's or animal's body to an energy consuming medical device implanted in the human's or animal's body. The apparatus comprises a transmission device operable from outside the human's or animal's body for transmission of an alternating magnetic field, and a receiver implantable in the human' s or animal' s body for receiving and for drawing energy from the alternating magnetic field to be supplied to the energy consuming implanted medical device. The transmission device includes at least one coil for generating the alternating magnetic field in a desired direction towards the receiver, the coil having a longitudinal extension, a front end to be directed towards the receiver and a rear to be directed away from the receiver. The apparatus is characterized by at least one shield adapted to shield the environment from the alternating magnetic field generated by the coil except at the front end of the coil. The shield includes a magnetizable core extending in the coil and a magnetizable casing integrated with the core and surrounding the rear end of the coil and the circumference of the coil along at least a portion of the longitudinal extension of the coil.
The transmission device of the apparatus may be designed in accordance with the embodiments described above in connection with the first aspect of the invention.
Alternatively, the transmission device may include two identical transmitters that are to be placed at different sides of the implanted receiver, for example on the human's abdomen and back. The two transmitters may also be placed on a stand relative to the human' s or animal' s body so that the two transmitters are in the desired positions for transmitting the alternating magnetic fields towards the implanted receiver.
The apparatus may be used for supplying energy to implanted medical devices, such as adjustable restriction devices for treating obesity, heartburn and reflux disease, urinary and anal incontinence, infusion pumps, muscle stimulators, impotence or other wireless transfer of energy to implants.
In accordance with a third aspect of the present invention, the invention also provides a method for harmless wireless transfer of energy to an energy consuming medical device implanted in a human's or animal's body. The method comprises: implanting in the human or animal a receiver capable of receiving and drawing energy from an alternating magnetic field to be supplied to the energy consuming medical device; manually holding external to the body a transmission device capable of transmitting the alternating magnetic field, the transmission device including a coil having a longitudinal extension, a front end directed away from the hand holding the transmission device and a rear end facing the hand holding the transmission device; and transmitting by means of the transmission device the alternating magnetic field to the implanted receiver. The method is characterized by shielding by means of a shield the hand holding the transmission device from the alternating magnetic field generated by the coil. The shield includes a magnetizable core extending in the coil of the transmission device and a magnetizable casing integrated with the core of the transmission device and surrounding the rear end of the coil and the circumference of the coil along at least a portion of the longitudinal extension of the coil.
In a more general aspect, the present invention also provides another method for harmless wireless transfer of energy to an energy consuming medical device implanted in a human' s or animal's body, comprising: implanting in the human or animal a receiver capable of receiving and drawing energy from an alternating magnetic field to be supplied to the energy consuming medical device; providing an external transmission device capable of transmitting the alternating magnetic field and including a coil having a longitudinal extension, a front end and a rear end; positioning the transmission device relative to the body so that the front end of the coil is directed towards the receiver and the rear end of the coil is directed away from the receiver; and transmitting by means of the transmission device the alternating magnetic field to the implanted receiver. The method is characterized by shielding by means of a shield the environment from the alternating magnetic field generated by the coil except at the front end of the coil. The shield includes a magnetizable core extending in the coil of the transmission device and a magnetizable casing integrated with the core of the transmission device and surrounding the rear end of the coil and the circumference of the coil along at least a portion of the longitudinal extension of the coil.
The present invention is described in more detail in the following with reference to the accompanying drawings, in which
Figure 1 schematically illustrates an apparatus of the present invention,
Figure 2 is a front view of a coil and shield of a hand-held transmission device according to an embodiment of the invention, Figure 3 is a cross-section along the line III-III in Figure 2,
Figure 4 is a perspective view of a coil and shield of a hand-held transmission device according to another embodiment of the invention,
Figure 5 is a cross-section through the shield shown in Figure 4,
Figure 6 illustrates an embodiment of the apparatus of the invention used for transferring energy to an artificial sphincter applied on the rectum of an anal incontinent human being, and
Figure 7 is a modification of the embodiment according to Figure 6.
Figure 1 illustrates manual operation of an apparatus of the invention including an alternating magnetic field transmission device 1 held by an operator' s hand 2 and a receiver 3 subcutaneously implanted in a human's body 4. The implanted receiver 3 is capable of receiving the alternating magnetic field transmitted by the transmission device 1 and of drawing energy from the alternating magnetic field to be supplied to an energy consuming medical device implanted in the body 4. The transmission device 1 includes a plastic box 5 containing a coil
6 adapted to generate an alternating magnetic field in the direction away from the hand 2 towards the implanted receiver 3.
The coil 6 is situated in the lower part of the box 5 a few centimeters from the hand 2.
Figures 2 and 3 show a shield 7 of the apparatus for shielding the hand 2 from the alternating magnetic field including a ferrite core 8 extending in the coil 6 along the entire longitudinal extension thereof. (Alternatively, the coil 6 may be shorter than the core 8.) A ferrite casing 9 is integrated with the core 8 and surrounds the top rear end of the coil 6 and the circumference of the coil 6 along the entire longitudinal extension of the coil 6. The casing 9 includes a circular cylindrical wall 10 surrounding the coil 6 and a circular gable wall 11 joined to the cylindrical wall 10.
In Figure 1 the shield 7 has a somewhat modified design, the position of the shield 7 being indicated in dotted lines. Thus, the cylindrical wall 10 extends only halfway along the coil 6.
Figures 4 and 5 show a modified shield 12 that does not dampen the alternating magnetic field as much as the shield 7 of Figures 2 and 3. Thus, the cylindrical wall 13 of the shield 12 is provided with several cutouts 14 evenly distributed around the circumference of the cylindrical wall 13. In this embodiment, the coil 6 is shorter than the core 8.
Figure 6 shows an embodiment of the apparatus used for an anal incontinent human. The apparatus includes the transmission device 1 and a receiver 15 subcutaneously implanted in the human's body. The receiver 15 supplies energy to an implanted operation device 16 that operates an artificial sphincter 17 applied on the human's rectum 18. The transmission device 1 is held by an operator who puts it on the human' s skin substantially in front of the implanted receiver 15 to provide efficient energy transmission from the transmission device 1 to the receiver 15.
The embodiment shown in Figure 7 is identical to the embodiment shown in Figure 6, except that the transmission device 1 include two wireless energy transmitters 19 and 20, and the receiver and operation device are integrated in a single receiver/operation unit 21 located close to the artificial sphincter 17. Each transmitter 19,20 may be designed as the transmission device 1 described above in connection with Figs. 1- 5. In this embodiment the transmitters 19 and 20 are positioned at different sides of the implanted receiver/operation unit 21, suitably at opposite sides as illustrated in Figure 7, to transmit wireless energy to the receiver/operation unit 21. Of course, two wireless energy transmitters may also be used for transmitting energy to the receiver 15 of the embodiment shown in Figure 6.

Claims

1. A transmission device (1;19,20) for transmitting an alternating magnetic field to a receiver (3; 15; 21), which is implanted in a human's or animal's body to supply energy drawn from the alternating magnetic field to an energy consuming implant (17) in the human's or animal's body, the transmission device comprising a coil (6) adapted to generate the alternating magnetic field in a desired direction towards the implanted receiver, the coil having a longitudinal extension, a front end to be directed towards the receiver and a rear end to be directed away from the receiver, characterized by a shield (7; 12) adapted to shield the environment from the alternating magnetic field generated by the coil (6) except at the front end of the coil (6), the shield including a magnetizable core (8) extending in the coil and a magnetizable casing (9) integrated with the core and surrounding the rear end of the coil and the circumference of the coil along at least a portion of the longitudinal extension of the coil.
2. A transmission device according to claim 1, wherein the casing (9) completely surrounds the coil (6) except the front end thereof.
3. A transmission device according to claim 2, wherein the core (8) wholly extends along the longitudinal extension of the coil (6) .
4. A transmission device according to claim 1, wherein the casing (9) surrounds the circumference of the coil (6) along a portion of the longitudinal extension of the coil.
5. A transmission device according to claim 4, wherein the core (8) and/or coil (6) extends past the casing (9) along the longitudinal extension of the coil, as seen in the direction towards the front end of the coil.
6. A transmission device according to any one of claims 1-5, wherein the casing (9) comprises a circular cylindrical wall
(10; 13) and a circular gable wall (11) joined to the cylindrical wall, the core (8) extends centrally in the cylindrical wall from the gable wall and the coil (6) is applied on the core with the rear end of the coil facing the gable wall.
7. A transmission device according to claim 6, wherein the cylindrical wall (13) is provided with cut-outs (14).
8. A transmission device according to any one of claims 1-7, wherein the shield (7; 12) is made of ferrite.
9. A transmission device according to any one of claims 1-8, further comprising a plastic box (5), in which the coil (6) and shield (7; 12) are arranged such that they are located at a distance, in the order of centimeters, from an operator's hand (2), when the operator holds the transmission device during operation.
10. An apparatus for wireless transfer of energy from outside a human' s or animal' s body to an energy consuming medical device (17) implanted in the human's or animal's body, comprising a transmission device (1;19,20) operable from outside the human's or animal's body for transmission of an alternating magnetic field, and a receiver (3; 15; 21) implantable in the human's or animal's body for receiving and drawing energy from the alternating magnetic field to be supplied to the energy consuming implanted medical device, the transmission device including at least one coil (6) for generating the alternating magnetic field in a desired direction towards the receiver, the coil having a longitudinal extension, a front end to be directed towards the receiver and a rear to be directed away from the receiver, characterized by at least one shield (7) adapted to shield the environment from the alternating magnetic field generated by the coil (6) except at the front end of the coil (6), the shield including a magnetizable core (8) extending in the coil and a magnetizable casing (9) integrated with the core and surrounding the rear end of the coil and the circumference of the coil along at least a portion of the longitudinal extension of the coil.
11. An apparatus according to claim 10, wherein the transmission device comprises a first transmitter (19) and a second transmitter (20) , the first and second transmitters include first and second coils (6), respectively, for generating respective alternating magnetic fields in two different directions towards the receiver (21) , each of the first and second coils having a longitudinal extension, a front end to be directed towards the receiver and a rear end to be directed away from the receiver, and the first and second transmitters include first and second shields (9) adapted to shield the environment from the alternating magnetic fields, each of the first and second shields including a magnetizable core (8) extending in the coil and a magnetizable casing (9) integrated with the core and surrounding the rear end of the coil and the circumference of the coil along at least a portion of the longitudinal extension of the coil.
12. An apparatus according to claim 10, wherein the casing (9) completely surrounds the coil (6) except the front end thereof.
13. An apparatus according to claim 12, wherein the core (8) wholly extends along the longitudinal extension of the coil (6).
14. An apparatus according to claim 10, wherein the casing (9) surrounds the circumference of the coil (6) along a portion of the longitudinal extension of the coil.
15. An apparatus according to claim 14, wherein the core (8) and/or coil (6) extends past the casing (9) along the longitudinal extension of the coil, as seen in the direction towards the front end of the coil.
16. An apparatus according to any one of claims 10, 12-15, wherein the casing (9) comprises a circular cylindrical wall
(10; 13) and a circular gable wall (11) joined to the cylindrical wall, the core (8) extends centrally in the cylindrical wall from the gable wall and the coil is applied on the core with the rear end of the coil facing the gable wall.
17. An apparatus according to claim 16, wherein the cylindrical wall (13) is provided with cut-outs (14).
18. An apparatus according to any one of claims 10, 12-17, wherein the shield (7) is made of ferrite.
19. An apparatus according to any one of claims 10, 12-18, further comprising a plastic box (5), in which the coil (6) and shield (7) are arranged such that they are located at a distance, in the order of centimeters, from an operator's hand, when the operator holds the transmission device (1;19,20) during operation.
20. A method for harmless wireless transfer of energy to an energy consuming medical device (17) implanted in a human's or animal' s body, comprising implanting in the human or animal a receiver (3; 15; 21) capable of receiving and drawing energy from an alternating magnetic field to be supplied to the energy consuming medical device, manually holding external to the body a transmission device (1;19,20) capable of transmitting the alternating magnetic field, the transmission device including a coil (6) for generating the magnetic field and having a longitudinal extension, a front end directed away from the hand holding the transmission device and a rear end facing the hand holding the transmission device, and transmitting by means of the transmission device the alternating magnetic field to the implanted receiver, characterized by shielding by means of a shield (7) the hand holding the transmission device (1;19,20) from the alternating magnetic field generated by the coil (6), the shield including a magnetizable core (8) extending in the coil (6) of the transmission device and a magnetizable casing (9) integrated with the core of the transmission device and surrounding the rear end of the coil and the circumference of the coil along at least a portion of the longitudinal extension of the coil.
21. A method for harmless wireless transfer of energy to an energy consuming medical device (17) implanted in a human's or animal' s body, comprising implanting in the human or animal a receiver (3;15;21) capable of receiving and drawing energy from an alternating magnetic field to be supplied to the energy consuming medical device, providing an external transmission device (1;19,20) capable of transmitting the alternating magnetic field and including a coil (6) having a longitudinal extension, a front end and a rear end, positioning the transmission device relative to the body so that the front end of the coil is directed towards the receiver and the rear end of the coil is directed away from the receiver, and transmitting by means of the transmission device the alternating magnetic field to the implanted receiver, characterized by shielding by means of a shield (7) the environment from the alternating magnetic field generated by the coil (6) except at the front end of the coil (6), the shield including a magnetizable core (8) extending in the coil of the transmission device and a magnetizable casing integrated with the core of the transmission device and surrounding the rear end of the coil and the circumference of the coil along at least a portion of the longitudinal extension of the coil.
PCT/SE2003/001464 2002-09-20 2003-09-18 Harmless wireless energy transmission to implant WO2004026399A1 (en)

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EP03797781A EP1545702B1 (en) 2002-09-20 2003-09-18 Harmless wireless energy transmission to implant
MXPA05002819A MXPA05002819A (en) 2002-09-20 2003-09-18 Harmless wireless energy transmission to implant.
CA2497906A CA2497906C (en) 2002-09-20 2003-09-18 Harmless wireless energy transmission to implant
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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1738795A1 (en) * 2005-06-30 2007-01-03 DePuy Products, Inc. Apparatus for transcutaneously transferring energy
EP1834611A2 (en) * 2006-03-13 2007-09-19 Tyco Healthcare Group Lp Transdermal magnetic coupling gastric banding
EP1838386A1 (en) * 2005-01-07 2007-10-03 Uroplasty, Inc. Implantable neuromodulation system and method
US7780613B2 (en) 2005-06-30 2010-08-24 Depuy Products, Inc. Apparatus, system, and method for transcutaneously transferring energy
US8015024B2 (en) 2006-04-07 2011-09-06 Depuy Products, Inc. System and method for managing patient-related data
US8075627B2 (en) 2006-04-07 2011-12-13 Depuy Products, Inc. System and method for transmitting orthopaedic implant data
US8080064B2 (en) 2007-06-29 2011-12-20 Depuy Products, Inc. Tibial tray assembly having a wireless communication device
US8632464B2 (en) 2006-09-11 2014-01-21 DePuy Synthes Products, LLC System and method for monitoring orthopaedic implant data
EP2905051A1 (en) * 2004-06-24 2015-08-12 Ethicon Endo-Surgery Primary coil for transcutaneous energy transfer

Families Citing this family (69)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100606307B1 (en) * 2001-05-23 2006-07-28 안태영 Apparatus for contactless power transfer for medical implant
US20050288740A1 (en) * 2004-06-24 2005-12-29 Ethicon Endo-Surgery, Inc. Low frequency transcutaneous telemetry to implanted medical device
US7599743B2 (en) * 2004-06-24 2009-10-06 Ethicon Endo-Surgery, Inc. Low frequency transcutaneous energy transfer to implanted medical device
US7955357B2 (en) 2004-07-02 2011-06-07 Ellipse Technologies, Inc. Expandable rod system to treat scoliosis and method of using the same
US7828715B2 (en) 2006-06-29 2010-11-09 Ams Research Corporation Method of treating anal incontinence
US7862502B2 (en) 2006-10-20 2011-01-04 Ellipse Technologies, Inc. Method and apparatus for adjusting a gastrointestinal restriction device
US8246533B2 (en) 2006-10-20 2012-08-21 Ellipse Technologies, Inc. Implant system with resonant-driven actuator
AU2008203927B2 (en) * 2007-01-03 2013-10-03 Boston Scientific Scimed, Inc. Methods for installing sling to treat fecal incontinence, and related devices
US20080304710A1 (en) * 2007-06-08 2008-12-11 Lijie Xu Method and apparatus for processing image of at least one seedling
US20090112263A1 (en) 2007-10-30 2009-04-30 Scott Pool Skeletal manipulation system
US20090156891A1 (en) * 2007-12-12 2009-06-18 Ams Research Corporation Prolapse and Perineal Repair Concepts
US20090248148A1 (en) 2008-03-25 2009-10-01 Ellipse Technologies, Inc. Systems and methods for adjusting an annuloplasty ring with an integrated magnetic drive
US11202707B2 (en) 2008-03-25 2021-12-21 Nuvasive Specialized Orthopedics, Inc. Adjustable implant system
US11241257B2 (en) 2008-10-13 2022-02-08 Nuvasive Specialized Orthopedics, Inc. Spinal distraction system
US8382756B2 (en) 2008-11-10 2013-02-26 Ellipse Technologies, Inc. External adjustment device for distraction device
US8197490B2 (en) 2009-02-23 2012-06-12 Ellipse Technologies, Inc. Non-invasive adjustable distraction system
US9622792B2 (en) 2009-04-29 2017-04-18 Nuvasive Specialized Orthopedics, Inc. Interspinous process device and method
US8449543B2 (en) 2009-09-04 2013-05-28 Ellipse Technologies, Inc. Bone growth device and method
US20110257703A1 (en) * 2010-04-15 2011-10-20 Med-El Elektromedizinische Geraete Gmbh Inductive Link with Ferrite Sheets
US9248043B2 (en) 2010-06-30 2016-02-02 Ellipse Technologies, Inc. External adjustment device for distraction device
US9750945B2 (en) * 2010-08-02 2017-09-05 St. Jude Medical Luxembourg Holdings SMI S.A.R.L. Neurostimulation programmers with improved RF antenna radiation patterns
US8734488B2 (en) 2010-08-09 2014-05-27 Ellipse Technologies, Inc. Maintenance feature in magnetic implant
WO2012112396A2 (en) 2011-02-14 2012-08-23 Ellipse Technologies, Inc. Device and method for treating fractured bones
US10743794B2 (en) 2011-10-04 2020-08-18 Nuvasive Specialized Orthopedics, Inc. Devices and methods for non-invasive implant length sensing
US10016220B2 (en) 2011-11-01 2018-07-10 Nuvasive Specialized Orthopedics, Inc. Adjustable magnetic devices and methods of using same
US20130338714A1 (en) 2012-06-15 2013-12-19 Arvin Chang Magnetic implants with improved anatomical compatibility
EP2878061B1 (en) 2012-07-27 2023-10-25 Tc1 Llc Thermal management for implantable wireless power transfer systems
US9825471B2 (en) 2012-07-27 2017-11-21 Thoratec Corporation Resonant power transfer systems with protective algorithm
US9287040B2 (en) 2012-07-27 2016-03-15 Thoratec Corporation Self-tuning resonant power transfer systems
WO2014018972A1 (en) 2012-07-27 2014-01-30 Thoratec Corporation Computer modeling for resonant power transfer systems
US10525181B2 (en) 2012-07-27 2020-01-07 Tc1 Llc Resonant power transfer system and method of estimating system state
US9805863B2 (en) 2012-07-27 2017-10-31 Thoratec Corporation Magnetic power transmission utilizing phased transmitter coil arrays and phased receiver coil arrays
US10383990B2 (en) 2012-07-27 2019-08-20 Tc1 Llc Variable capacitor for resonant power transfer systems
EP2878062A4 (en) * 2012-07-27 2016-04-20 Thoratec Corp Resonant power transmission coils and systems
US9044281B2 (en) 2012-10-18 2015-06-02 Ellipse Technologies, Inc. Intramedullary implants for replacing lost bone
IN2015DN03762A (en) 2012-10-29 2015-10-02 Ellipse Technologies Inc
US9179938B2 (en) 2013-03-08 2015-11-10 Ellipse Technologies, Inc. Distraction devices and method of assembling the same
US9680310B2 (en) 2013-03-15 2017-06-13 Thoratec Corporation Integrated implantable TETS housing including fins and coil loops
EP2984731B8 (en) 2013-03-15 2019-06-26 Tc1 Llc Malleable tets coil with improved anatomical fit
US10226242B2 (en) 2013-07-31 2019-03-12 Nuvasive Specialized Orthopedics, Inc. Noninvasively adjustable suture anchors
US9801734B1 (en) 2013-08-09 2017-10-31 Nuvasive, Inc. Lordotic expandable interbody implant
CN105744986B (en) 2013-09-16 2019-02-22 斯坦福大学董事会 The multicomponent coupler generated for electromagnetic energy
US10751094B2 (en) 2013-10-10 2020-08-25 Nuvasive Specialized Orthopedics, Inc. Adjustable spinal implant
EP3072210B1 (en) 2013-11-11 2023-12-20 Tc1 Llc Resonant power transfer systems with communications
US9855437B2 (en) 2013-11-11 2018-01-02 Tc1 Llc Hinged resonant power transfer coil
WO2015070200A1 (en) 2013-11-11 2015-05-14 Thoratec Corporation Resonant power transfer systems with communications
WO2015134871A1 (en) 2014-03-06 2015-09-11 Thoratec Corporation Electrical connectors for implantable devices
CN106456215B (en) 2014-04-28 2020-04-10 诺威适骨科专科公司 External adjustment device for adjusting a medical implant
US20160336813A1 (en) 2015-05-15 2016-11-17 NeuSpera Medical Inc. Midfield coupler
EP3753517B1 (en) 2014-05-18 2022-05-11 Neuspera Medical Inc. Midfield coupler
EP4213298A1 (en) 2014-09-22 2023-07-19 Tc1 Llc Antenna designs for communication between a wirelessly powered implant to an external device outside the body
EP3204989B1 (en) 2014-10-06 2019-08-21 Tc1 Llc Multiaxial connector for implantable devices
WO2016065205A1 (en) 2014-10-23 2016-04-28 Ellipse Technologies, Inc. Remotely adjustable interactive bone reshaping implant
EP4005515B1 (en) 2014-12-26 2024-07-24 NuVasive Specialized Orthopedics, Inc. Systems for distraction
US10238427B2 (en) 2015-02-19 2019-03-26 Nuvasive Specialized Orthopedics, Inc. Systems and methods for vertebral adjustment
US10148126B2 (en) 2015-08-31 2018-12-04 Tc1 Llc Wireless energy transfer system and wearables
EP3902100A1 (en) 2015-10-07 2021-10-27 Tc1 Llc Resonant power transfer systems having efficiency optimization based on receiver impedance
EP3361960B1 (en) 2015-10-16 2023-05-10 NuVasive Specialized Orthopedics, Inc. Adjustable devices for treating arthritis of the knee
EP4275631A3 (en) 2015-12-10 2024-02-28 NuVasive Specialized Orthopedics, Inc. External adjustment device for distraction device
ES2805657T3 (en) 2016-01-28 2021-02-15 Nuvasive Specialized Orthopedics Inc Systems for bone transport
WO2017139548A1 (en) 2016-02-10 2017-08-17 Nuvasive Specialized Orthopedics, Inc. Systems and methods for controlling multiple surgical variables
EP4084271A1 (en) 2016-09-21 2022-11-02 Tc1 Llc Systems and methods for locating implanted wireless power transmission devices
US11197990B2 (en) 2017-01-18 2021-12-14 Tc1 Llc Systems and methods for transcutaneous power transfer using microneedles
EP3735733B1 (en) 2018-01-04 2024-01-17 Tc1 Llc Systems and methods for elastic wireless power transmission devices
US11577097B2 (en) 2019-02-07 2023-02-14 Nuvasive Specialized Orthopedics, Inc. Ultrasonic communication in medical devices
US11589901B2 (en) 2019-02-08 2023-02-28 Nuvasive Specialized Orthopedics, Inc. External adjustment device
US20220265324A1 (en) 2021-02-23 2022-08-25 Nuvasive Specialized Orthopedics, Inc. Adjustable implant, system and methods
US11737787B1 (en) 2021-05-27 2023-08-29 Nuvasive, Inc. Bone elongating devices and methods of use
WO2023014564A1 (en) 2021-08-03 2023-02-09 Nuvasive Specialized Orthopedics, Inc. Adjustable implant

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4071032A (en) * 1976-01-29 1978-01-31 Pacesetter Systems Inc. Implantable living tissue stimulators
US4723536A (en) * 1984-08-27 1988-02-09 Rauscher Elizabeth A External magnetic field impulse pacemaker non-invasive method and apparatus for modulating brain through an external magnetic field to pace the heart and reduce pain
US6389318B1 (en) * 1998-07-06 2002-05-14 Abiomed, Inc. Magnetic shield for primary coil of transcutaneous energy transfer device

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3872455A (en) * 1971-11-17 1975-03-18 Monitron Ind Physiological measurement display system
US4985922A (en) * 1988-07-27 1991-01-15 Grumman Aerospace Corporation Signal and power transmission through a wall
US5527348A (en) * 1995-02-03 1996-06-18 Medtronic, Inc. Magnetically permeable E-shield and method of connection thereto
FR2746565B1 (en) * 1996-03-22 1998-05-22 Ela Medical Sa DEVICE FOR RECEIVING SIGNALS FROM AN IMPLANTED ACTIVE MEDICAL APPARATUS
US5741316A (en) * 1996-12-02 1998-04-21 Light Sciences Limited Partnership Electromagnetic coil configurations for power transmission through tissue
US6324431B1 (en) * 1998-07-06 2001-11-27 Abiomed, Inc. Transcutaneous energy transfer device with magnetic field protected components in secondary coil
US6324430B1 (en) * 1998-07-06 2001-11-27 Abiomed, Inc. Magnetic shield for primary coil of transcutaneous energy transfer device
US6212430B1 (en) * 1999-05-03 2001-04-03 Abiomed, Inc. Electromagnetic field source with detection of position of secondary coil in relation to multiple primary coils
US7729776B2 (en) * 2001-12-19 2010-06-01 Cardiac Pacemakers, Inc. Implantable medical device with two or more telemetry systems

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4071032A (en) * 1976-01-29 1978-01-31 Pacesetter Systems Inc. Implantable living tissue stimulators
US4723536A (en) * 1984-08-27 1988-02-09 Rauscher Elizabeth A External magnetic field impulse pacemaker non-invasive method and apparatus for modulating brain through an external magnetic field to pace the heart and reduce pain
US6389318B1 (en) * 1998-07-06 2002-05-14 Abiomed, Inc. Magnetic shield for primary coil of transcutaneous energy transfer device

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2905051A1 (en) * 2004-06-24 2015-08-12 Ethicon Endo-Surgery Primary coil for transcutaneous energy transfer
EP1838386A1 (en) * 2005-01-07 2007-10-03 Uroplasty, Inc. Implantable neuromodulation system and method
EP1838386A4 (en) * 2005-01-07 2011-07-20 Uroplasty Inc Implantable neuromodulation system and method
US8092412B2 (en) 2005-06-30 2012-01-10 Depuy Products, Inc. Apparatus, system, and method for transcutaneously transferring energy
EP1738795A1 (en) * 2005-06-30 2007-01-03 DePuy Products, Inc. Apparatus for transcutaneously transferring energy
US7780613B2 (en) 2005-06-30 2010-08-24 Depuy Products, Inc. Apparatus, system, and method for transcutaneously transferring energy
US8244368B2 (en) 2005-06-30 2012-08-14 Depuy Products, Inc. Apparatus, system, and method for transcutaneously transferring energy
US8187213B2 (en) 2005-06-30 2012-05-29 Depuy Products, Inc. Apparatus, system, and method for transcutaneously transferring energy
EP1834611A3 (en) * 2006-03-13 2008-06-04 Tyco Healthcare Group Lp Transdermal magnetic coupling gastric banding
EP1834611A2 (en) * 2006-03-13 2007-09-19 Tyco Healthcare Group Lp Transdermal magnetic coupling gastric banding
US10172551B2 (en) 2006-04-07 2019-01-08 DePuy Synthes Products, Inc. System and method for transmitting orthopaedic implant data
US8075627B2 (en) 2006-04-07 2011-12-13 Depuy Products, Inc. System and method for transmitting orthopaedic implant data
US8015024B2 (en) 2006-04-07 2011-09-06 Depuy Products, Inc. System and method for managing patient-related data
US8668742B2 (en) 2006-04-07 2014-03-11 DePuy Synthes Products, LLC System and method for transmitting orthopaedic implant data
US8632464B2 (en) 2006-09-11 2014-01-21 DePuy Synthes Products, LLC System and method for monitoring orthopaedic implant data
US8080064B2 (en) 2007-06-29 2011-12-20 Depuy Products, Inc. Tibial tray assembly having a wireless communication device

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ATE385831T1 (en) 2008-03-15
US20040138725A1 (en) 2004-07-15
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DE60319106D1 (en) 2008-03-27

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