Powered surgical handpiece with an antenna for reading data from a memory integral with a cutting accessory attached to the handpiece

• US 8,535,342 B2
• Filed: 06/29/2009
• Issued: 09/17/2013
• Est. Priority Date: 08/08/2001
• Status: Active Grant

• Current Assignee: Stryker Corporation
• Original Assignee: Stryker Corporation
• Inventors: Malackowski, Don, Deng, Wenjie, Rains, James Keith, Wasserman, Mark, Luis Moctezuma de la Barrera, Jos
• Primary Examiner(s): Houston, Elizabeth
• Application Number:
  US12/493,826
• Publication Number:
  US 20090292304A1
• Time in Patent Office: 1,541 Days
• Field of Search: 606/167, 606170-173, 606 79- 82, 340/10.5, 361749-751
• US Class Current: 606/170
• CPC Class Codes: A61B 17/162 Chucks or tool parts which are to be held in a chuck
• CPC Class Codes: A61B 17/1626 Control means; Display units
• CPC Class Codes: A61B 17/1688 for the sinus or nose
• CPC Class Codes: A61B 17/32002 with continuously rotating, oscillating or reciprocating cutting instruments
• CPC Class Codes: A61B 17/8875 Screwdrivers, spanners or wrenches
• CPC Class Codes: A61B 2017/00017 Electrical control of surgical instruments
• CPC Class Codes: A61B 2017/00221 with wireless transmission of data, e.g. by infrared radiation or radiowaves
• CPC Class Codes: A61B 2017/00464 for use with different instruments with hole for different instruments A61B2017/22072
• CPC Class Codes: A61B 2017/00477 Coupling A61B2017/0046 takes precedence
• CPC Class Codes: A61B 2017/00482 with a code
• CPC Class Codes: A61B 2034/102 Modelling of surgical devices, implants or prosthesis
• CPC Class Codes: A61B 2034/256 having a database of accessory information, e.g. including context sensitive help or scientific articles
• CPC Class Codes: A61B 2090/0804 Counting number of instruments used; Instrument detectors
• CPC Class Codes: A61B 2217/005 with suction drainage system
• CPC Class Codes: A61B 2217/007 with irrigation system
• CPC Class Codes: A61B 34/20 Surgical navigation systems; Devices for tracking or guiding surgical instruments, e.g. for frameless stereotaxis
• CPC Class Codes: A61B 90/40 Apparatus fixed or close to patients specially adapted for providing an aseptic surgical environment
• CPC Class Codes: A61B 90/98 using electromagnetic means, e.g. transponders

Abstract

A powered surgical handpiece that includes a motor for actuating a cutting accessory. The handpiece has a housing with a bore for receiving the cutting accessory and a coupling member internal to the bore that releasably engages and actuates the cutting accessory. A coil is mounted to the housing adjacent the bore. More particularly, the coil is located so that when the cutting accessory is seated in the bore, the coil is able to exchange signals with a complementary coil integral with the cutting accessory. A locking assembly mounted to the housing releasably holds the cutting accessory in the bore.

Claims

1. A powered surgical handpiece, said handpiece having:

a housing, said housing having a first bore with an open end for removably receiving a cutting accessory and that extends inwardly into said housing;

a motor disposed in said housing, said motor including a coupling assembly disposed in the housing first bore for engaging the cutting accessory so that, upon actuation of said motor, the cutting accessory is driven by said motor;

a locking assembly mounted to said housing, said locking assembly having a member that engages said cutting accessory so as to removably hold said cutting accessory in the housing first bore; and

a flexible carrier, said flexible carrier having first and second sections, each section having a longitudinal axis wherein;

the longitudinal axis of the second section is angularly offset from the longitudinal axis of the first section;

conductive traces are formed on the sections and are connected to each other;

the carrier first section is wound in a closed circular pattern and disposed in a portion of said housing the defines the housing first bore so that the conductive trace on the carrier first section forms a coil that extends circumferentially around said housing first bore that is capable of inductively exchanging signals with the cutting accessory; and

the carrier second section extends proximally from the carrier first section through said housing so that the conductive trace on the carrier second section functions as a conductor internal to said housing that extends to said coil.

2. The surgical handpiece of claim 1, wherein said locking assembly member is moveably attached to said housing.

3. The surgical handpiece of claim 1, wherein said housing is further formed to define a second bore that extends from the first bore to a location spaced from the first bore opening through which a suction is drawn.

4. The surgical handpiece of claim 1, wherein:

said housing is formed with a second bore separate from said first bore that is connected to the first bore; and

the second section of said flexible carrier is disposed in the housing second bore.

5. The surgical handpiece of claim 1, wherein an impedance matching circuit is attached to the second section of said flexible carrier and is connected to said coil formed by the conductive trace on the first section of said flexible carrier.

6. The surgical handpiece of claim 1, wherein:

internal to said housing is an annularly shaped structural member having an inner surface that at least partially defines the housing first bore, said annularly shaped structural member being further shaped to define a groove that extends around and is separated from the housing first bore; and

the first section of said flexible carrier is disposed in the groove defined by the annularly shaped structural member.

7. A powered surgical handpiece, said handpiece comprising:

a body having a distal end, said body having a first bore that is open at the body distal end, the first bore dimensioned for removably receiving a cutting accessory;

an annularly shaped structural member disposed in said body adjacent the distal end, said structural member shaped to have an inner wall that at least partially defines the body first bore and that defines a groove that extends annularly around the body first bore and that is isolated from the body first bore;

a motor disposed in said housing, said motor including a coupling assembly disposed in the body first bore for engaging the cutting accessory so that, upon actuation of said motor, the cutting accessory is driven by said motor;

a locking assembly mounted to said body, said locking assembly having a member that engages said cutting accessory so as to removably hold said cutting accessory in the body first bore;

a flexible carrier, said flexible carrier having formed thereon at least one conductive trace wherein;

said carrier has a first section with a longitudinal axis and a second section that is contiguous with the first section and that has a longitudinal axis that extends angularly away from the longitudinal axis of the first section;

the first section of said flexible carrier, including said conductive trace on the first section, is wound in a closed circular pattern and disposed in the groove defined by said annularly shaped structural member so that the conductive trace on the carrier first section forms a coil that extends circumferentially around said housing first bore that is capable of inductively exchanging signals with the cutting accessory; and

the carrier second section extends proximally away from the groove so that the conductive trace on the carrier second section functions as a conductor that extends to said coil.

8. The surgical handpiece of claim 7, wherein said body is further formed to define a second bore that extends from the first bore at a location spaced from the first bore opening through which a suction is drawn.

9. The surgical handpiece of claim 7, wherein:

said body is formed with a second bore separate from said first bore that is connected to the first bore; and

the second section of said flexible carrier is disposed in the second bore of said body.

10. The surgical handpiece of claim 7, wherein an impedance matching circuit is attached to the second section of said flexible carrier and connected to the coil-forming conductive trace on the first section of said carrier.

11. The surgical handpiece of claim 7, wherein said annularly shaped structural is member is shaped so that the groove defined by said structural member extends inwardly from and circumferentially around an outer surface of said structural member.

12. The surgical handpiece of claim 7, wherein the flexible carrier first section overlaps the flexible carrier second section and a conductive connection extends from the conductive trace on the flexible carrier first section to the conductive trace on the flexible carrier second section.

13. The surgical handpiece of claim 7, wherein the first and second sections of said flexible carrier are collectively L-shaped.

14. A powered surgical handpiece, said handpiece having:

a body, said body having a first bore with an open end for removably receiving a cutting accessory and that extends inwardly into said body;

a motor disposed in said housing, said motor including a coupling assembly disposed in the body first bore for engaging the cutting accessory so that, upon actuation of said motor, the cutting accessory is driven by said motor;

a locking assembly mounted to said body, said locking assembly having a member that engages said cutting accessory so as to removably hold said cutting accessory in the body first bore;

a flexible circuit, said flexible circuit having formed thereon at least one conductive trace wherein;

said flexible circuit is formed to have first and second sections such that the flexible circuit first and second sections have longitudinal axes that are angularly offset from each other;

the first section of said flexible circuit, including the conductive trace on the first section, is wound in a closed circular pattern and disposed in a portion of said housing the defines the body first bore so that the conductive trace wound in a circular pattern forms a coil that extends circumferentially around said housing first bore capable of inductively exchanging signals with the cutting accessory; and

the second section extends proximally away from the first section so that the conductive trace of the flexible circuit second section functions as a conductor that extends to said coil; and

an impedance matching circuit mounted to the second section of said flexible circuit, said impedance matching circuit being connected to said at least one conductive trace to function as an impedance matching circuit for said coil.

15. The surgical handpiece of claim 14, wherein said body is further formed to define a second bore that extends from the first bore at a location spaced from the first bore opening through which a suction is drawn.

16. The surgical handpiece of claim 14, wherein:

said body is formed with a second bore separate from said first bore that is connected to the first bore; and

the second section of said flexible circuit is disposed in said the housing body second bore.

17. The surgical handpiece of claim 14, wherein:

an annular member is disposed in said body, said annular member having an inner wall that at least partially defines the body first bore and defining a groove that extends circumferentially around the body first bore that is isolated from the body first bore; and

the first section of said flexible circuit is disposed in the groove defined by said annular member.

18. The surgical handpiece of claim 17, wherein said annular member is separate component from said body.

19. The surgical handpiece of claim 14, wherein:

the flexible circuit first section is wound over a portion of the flexible circuit second section; and

where the flexible circuit first section overlaps the flexible circuit second section, a conductive connection extends from said conductive trace on the flexible circuit first section to the conductive trace on the flexible circuit second section.

20. The surgical handpiece of claim 14, wherein the first and second sections of said flexible circuit are collectively L-shaped.