System and method for transmitting orthopaedic implant data

• US 8,075,627 B2
• Filed: 04/07/2006
• Issued: 12/13/2011
• Est. Priority Date: 04/07/2006
• Status: Active Grant

• Current Assignee: Depuy Synthes Products Incorporated (Johnson & Johnson)
• Original Assignee: Depuy Products Incorporated (Johnson & Johnson)
• Inventors: Caylor, Edward J. III, DiSilvestro, Mark R., Sherman, Jason T.
• Primary Examiner(s): Sweet, Thomas J
• Assistant Examiner(s): PRESTON, REBECCA STRASZHEIM
• Application Number:
  US11/399,878
• Publication Number:
  US 20070239282A1
• Time in Patent Office: 2,076 Days
• Field of Search: None
• US Class Current: 623/20.34
• CPC Class Codes: A61B 2560/0219 of externally powered implanted units
• CPC Class Codes: A61B 5/0031 Implanted circuitry
• CPC Class Codes: A61B 5/01 Measuring temperature of body parts ; Diagnostic temperature sensing, e.g. for malignant or inflamed tissue clinical contact thermometers G01K13/20
• CPC Class Codes: A61B 5/05 Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves impedance plethysmography A61B5/0295; measuring movement of the entire body or parts thereof A61B5/11; detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof A61B5/24
• CPC Class Codes: A61B 5/076 Permanent implantations telemetry using implanted circuitry A61B5/0031; implanted stimulators for therapy A61N1/3605, A61N1/362, A61N1/372
• CPC Class Codes: A61B 5/1036 Measuring load distribution, e.g. podologic studies
• CPC Class Codes: A61B 5/4528 Joints A61B5/4533, A61B5/4538 take precedence
• CPC Class Codes: A61B 5/4851 Prosthesis assessment or monitoring
• CPC Class Codes: A61B 5/686 Permanently implanted devices, e.g. pacemakers, other stimulators, biochips A61B5/6861 takes precedence
• CPC Class Codes: A61B 90/90 Identification means for patients or instruments, e.g. tags
• CPC Class Codes: A61B 90/98 using electromagnetic means, e.g. transponders
• CPC Class Codes: A61F 2/389 Tibial components A61F2/3868 takes precedence
• CPC Class Codes: A61F 2/4657 Measuring instruments used for implanting artificial joints for surgical instruments A61B90/06
• CPC Class Codes: A61F 2002/30225 Flat cylinders, i.e. discs
• CPC Class Codes: A61F 2002/3067 for data transfer
• CPC Class Codes: A61F 2002/3071 Identification means; Administration of patients
• CPC Class Codes: A61F 2002/30878 with non-sharp protrusions, for instance contacting the bone for anchoring, e.g. keels, pegs, pins, posts, shanks, stems, struts
• CPC Class Codes: A61F 2002/30884 Fins or wings, e.g. longitudinal wings for preventing rotation within the bone cavity
• CPC Class Codes: A61F 2002/30953 using a remote computer network, e.g. Internet
• CPC Class Codes: A61F 2002/4633 for selection of endoprosthetic joints or for pre-operative planning
• CPC Class Codes: A61F 2002/4666 : for measuring force, pressure or mechanical tension
• CPC Class Codes: A61F 2002/4672 : for measuring temperature
• CPC Class Codes: A61F 2002/4689 : acoustic
• CPC Class Codes: A61F 2002/4696 : optical
• CPC Class Codes: A61F 2230/0069 : cylindrical
• CPC Class Codes: A61F 2250/0002 : for data transfer
• CPC Class Codes: A61F 2250/0085 : Identification means; Administration of patients
• CPC Class Codes: G16H 10/60 : for patient-specific data, e.g. for electronic patient records
• CPC Class Codes: G16H 20/30 : relating to physical therapies or activities, e.g. physiotherapy, acupressure or exercising
• CPC Class Codes: G16H 20/40 : relating to mechanical, radiation or invasive therapies, e.g. surgery, laser therapy, dialysis or acupuncture
• CPC Class Codes: G16H 40/40 : for the management of medical equipment or devices, e.g. scheduling maintenance or upgrades
• CPC Class Codes: G16H 40/63 : for local operation
• CPC Class Codes: G16H 40/67 : for remote operation
• CPC Class Codes: H04B 5/79 : for data transfer in combination with power transfer

Abstract

A system and method for transmitting implant data includes an orthopaedic implant, a wireless receiver, and a processing circuit electrically coupled to the wireless receiver. The orthopaedic implant is configured to transmit implant identification data and implant sensor data to the wireless receiver in response to a power signal. The orthopedic implant may transfer the data over, for example, a wireless network. The processing circuit receives the implant identification data and the implant sensor data from the wireless receiver and is configured to retrieve patient-related data from a database based on the implant identification data. The processing circuit may also be configured to update a patient queue, assign a patient room to a patient, and/or transmit the patient-related data and the implant sensor data to a client machine located in the patient room.

Claims

1. An orthopaedic implant comprising:

a housing having a chamber defined therein;

a bobbin positioned in the chamber, the bobbin having a plurality of apertures positioned along an axis extending in a medial-lateral direction; and

a secondary coil positioned in the chamber of the housing and having a plurality of coil turns about a longitudinal axis each coil turn of the plurality of coil turns of the secondary coil (i) passing through a separate corresponding aperture of the plurality of apertures of the bobbin, and (ii) being positioned in a corresponding reference plane extending in an anterior-posterior direction orthogonal to the longitudinal axis,

wherein when the orthopaedic implant is implanted in a patient (i) the corresponding reference planes are capable of being oriented substantially parallel with a sagittal plane of a body of the patient and (ii) the longitudinal axis is capable of being oriented substantially orthogonal to the sagittal plane of the body of the patient.

2. An orthopaedic implant comprising

a platform having a bottom surface;

a stem secured to the bottom surface of the platform and extending downwardly therefrom;

a housing coupled to the stem having a chamber defined therein;

a bobbin positioned in the chamber, the bobbin including an end plate having an upper surface extending parallel to the bottom surface of the platform in a medial-lateral direction; and

a secondary coil positioned in the chamber of the housing and having a plurality of coil turns about a longitudinal axis, each coil turn of the plurality of coil turns of the secondary coil being positioned in a corresponding reference plane extending in an anterior-posterior direction orthogonal to the upper surface of the end plate,

wherein when the orthopaedic implant is implanted in a patient (i) the corresponding reference planes are capable of being oriented substantially parallel with a sagittal plane of a body of the patient and (ii) the longitudinal axis is capable of being oriented substantially orthogonal to the sagittal plane of the body of the patient.

3. An orthopaedic implant comprising:

a platform having a bottom surface;

a stem secured to the bottom surface of the platform and extending downwardly therefrom;

a housing coupled to the stem having a chamber defined therein; and

a secondary coil having a plurality of coil turns in registry with each other about a longitudinal axis, the longitudinal axis extending in a first direction parallel to the bottom surface of the platform, each coil turn of the secondary coil being positioned in a corresponding reference plane extending orthogonal to the longitudinal axis,

wherein the secondary coil is positioned in the chamber of the housing such that (i) the corresponding reference planes are capable of being oriented substantially parallel with a sagittal plane of a body of a patient and (ii) the longitudinal axis is capable of being oriented substantially orthogonal to the sagittal plane of the body of the patient when the orthopaedic implant is implanted in the patient and the patient is in a standing position.

4. The orthopaedic implant of claim 3, wherein the orthopaedic implant is a tibial tray.

5. The orthopaedic implant of claim 3, further comprising a processing circuit electrically coupled to the secondary coil and configured to receive a power signal from the secondary coil when the secondary coil is inductively coupled with a primary coil.

6. The orthopaedic implant of claim 5, further comprising:

a wireless transmitter coupled to the processing circuit; and

an antenna coil electrically coupled to the wireless transmitter,

wherein the processing circuit is configured to control the wireless transmitter to transmit implant identification data in response to the power signal using the antenna coil.

7. The orthopaedic implant of claim 6, wherein the wireless transmitter is configured to transmit the implant identification data at a frequency of about 2.4 gigahertz.

8. The orthopaedic implant of claim 6, wherein the wireless transmitter is configured to transmit the implant identification data using a wireless local area network frequency.

9. The orthopaedic implant of claim 6, wherein the processing circuit and the wireless transmitter are configured to transmit the implant identification data using a Bluetooth transmission protocol.

10. The orthopaedic implant of claim 6, further comprising a sensor electrically coupled to the processing circuit, wherein the processing circuit is configured to:

receive an output signal from the sensor; and

control the wireless transmitter to transmit the output signal in response to the power signal using the antenna coil.

11. The orthopaedic implant of claim 10, wherein the sensor is a sensor selected from the group consisting of a pressure sensor, a load sensor, a temperature sensor, and a hall-effect sensor.

12. The orthopaedic implant of claim 10, wherein the wireless transmitter is configured to transmit the output signal at a frequency of about 2.4 gigahertz.

13. The orthopaedic implant of claim 10, wherein the wireless transmitter is configured to transmit the output signal using a wireless local area network frequency.

14. The orthopaedic implant of claim 10, wherein the processing circuit and the wireless transmitter are configured to transmit the output signal using a Bluetooth transmission protocol.