Surgical system for powered instruments

• US 4,705,038 A
• Filed: 01/23/1985
• Issued: 11/10/1987
• Est. Priority Date: 01/23/1985
• Status: Expired due to Term

• Current Assignee: Smith & Nephew Incorporated (Smith & Nephew PLC)
• Original Assignee: Dyonics Incorporated
• Inventors: Sjostrom, Douglas D., Zemgals, Edvin
• Primary Examiner(s): Apley, Richard J.
• Assistant Examiner(s): Macey, H.
• Application Number:
  US06/693,779
• Time in Patent Office: 1,021 Days
• Field of Search: 128/305, 128/305.1, 128/310, 128/303 R, 604/22
• US Class Current: 606/180
• CPC Class Codes: A61B 17/32002 with continuously rotating, oscillating or reciprocating cutting instruments
• CPC Class Codes: A61B 2017/00482 with a code
• CPC Class Codes: A61B 2090/031 torque limiting
• CPC Class Codes: A61B 90/03 Automatic limiting or abutting means, e.g. for safety
• CPC Class Codes: A61B 90/98 using electromagnetic means, e.g. transponders
• CPC Class Codes: B23Q 5/00 Driving or feeding mechanisms; Control arrangements therefor automatic control B23Q15/00; copying B23Q33/00, B23Q35/00; specially adapted for boring or drilling machines B23B39/10, B23B47/00; numerical programme-control of machine tools G05B19/18

Abstract

A single-motor surgical system for operating a set of different surgical devices having different operational limits, consisting of a handpiece containing the motor and adapted to alternately receive a proximal portion of each of the surgical devices, each device having an indicator on its proximal portion that denotes its operational limit, the handpiece including an automatic sensor for sensing the indicator, and controls responsive to the sensor to automatically establish the operational limit of the motor in accordance with the respective surgical device received by the handpiece. In preferred embodiments, the system includes an arthroscopic handpiece as above and has a plurality of surgical devices adapted to receive different removable rotary tips that have different operational limits of rotation, each of the plurality of devices having a vacuum passage connectible at one end to a vacuum passage of the respective rotary tip and adjacent the other end, to a vacuum passage associated with the handpiece, whereby tissue severed by the rotary tip can be removed from the surgical site, the surgical device indicating to the sensor the rotational limits of the tips which the devices are adapted to receive.

Claims

1. A surgical system adapted to operate a set of different surgical devices having different operational limits, comprising:

a handpiece adapted to alternately receive a proximal portion of each of said surgical devices,

said set of said surgical devices,

each of said surgical devices having an indicator on its proximal portion that denotes its operational limit,

said handpiece including automatic sensor means for sensing said indicator;

a motor for driving said handpiece; and

means responsive to said sensor to automatically establish the operational limit of said motor in accordance with the respective surgical device received by said handpiece.

2. The surgical system of claim 1 wherein said sensor comprises means for limiting the torque applied by the motor.

3. The surgical system of claim 1 wherein said sensor comprises means for limiting the range of speed of the motor.

4. The surgical system of claim 1 wherein said motor is electrical and has an associated power source, and said sensor means is responsive to said indicator of a given surgical device to establish a limit on the electrical power delivered by said power source.

5. The surgical system of claim 4 in which said sensor means is responsive to limit the voltage applied to said motor and said motor is adapted to maintain its speed in accordance with the voltage applied.

6. The surgical system of claim 4 in which said sensor means is responsive to limit the electrical current applied to said motor to limit the torque delivered by said motor.

7. The surgical system of claim 1 wherein said indicator for each of said set of surgical devices comprises a magnet means adapted to produce a magnetic field different from that of other surgical devices of said set, said sensor means in said handpiece being responsive to said magnetic field to switch said motor to the respective operational limit.

8. The surgical system of claim 1 wherein said surgical devices include magnets in their proximal portions and said automatic sensor means of said handpiece comprises a set of switches actuatable by the presence of said magnets to establish the operational limit of said motor.

9. The surgical system of claim 1 wherein at least one surgical device of said set comprises, at its distal portion, removable rotary tips that have the operational limits of rotation indicated to said sensor means by that said surgical device.

each said surgical device of said set having a vacuum passage connectible at one end to a vacuum passage of a respective rotary tip and, adjacent the other end, to a vacuum passage associated with said handpiece and connected proximally to a source of vacuum,

whereby tissue severed by said rotary tip can be removed from the surgical site.

10. An arthroscopic handpiece for use in a surgical system comprising said handpiece, a set of surgical devices having different operational limits, each surgical device having on its proximal portion an indicator means for denoting its operational limit, and a motor for driving said handpiece;

said handpiece comprising automatic sensor means adapted for sensing one of said indicator means denoting the operational limit of a respective surgical device received by said handpiece, said arthroscopic handpiece having means adapted to alternatively receive a proximal portion of said surgical device of the set for operation of the surgical device at its indicated operational limit, and said handpiece also comprising rotation means for rotating a member within the handpiece wherein said member has means adapted to be associated with a respective surgical device, said rotation means adapted to be driven by said motor, said handpiece further comprising means responsive to said automatic sensor means for controlling said rotation means, thereby establishing the operational limit, and

said handpiece adapted for operation of a surgical device comprising, at its distal portion, a rotary tip that has an operational limit of rotation indicated by that surgical device,

each surgical device defining a vacuum passage connectible at one end to a vacuum passage of a respective rotary tip, said arthroscopic handpiece defining a vacuum passage having means adapted for connection to the vacuum passage of the surgical device and for connection proximally to a source of vacuum for removal of tissue severed by operation of the rotary tip from the surgical site through the vacuum passage of said handpiece.