Tool and method for external fixation strut adjustment

• US 8,864,750 B2
• Filed: 02/18/2009
• Issued: 10/21/2014
• Est. Priority Date: 02/18/2008
• Status: Active Grant

• Current Assignee: Texas Scottish Rite Hospital for Children
• Original Assignee: Texas Scottish Rite Hospital for Children
• Inventors: Ross, John D., Samchukov, Mikhail L., Cherkashin, Alexander M., Birch, John G.
• Primary Examiner(s): Jackson, Gary
• Assistant Examiner(s): LIPITZ, JEFFREY BRIAN
• Application Number:
  US12/865,248
• Publication Number:
  US 20110004199A1
• Time in Patent Office: 2,071 Days
• Field of Search: 606/1, 606 54- 59
• US Class Current: 606/1
• CPC Class Codes: A61B 17/62 Ring frames, i.e. devices extending around the bones to be positioned A61B17/6433 , A61B17/66 take precedence
• CPC Class Codes: A61B 17/66 Alignment, compression or distraction mechanisms
• CPC Class Codes: A61B 17/8875 Screwdrivers, spanners or wrenches
• CPC Class Codes: A61B 2017/00734 battery operated
• CPC Class Codes: A61B 2090/061 for measuring dimensions, e.g. length
• CPC Class Codes: A61B 90/96 using barcodes
• CPC Class Codes: A61B 90/98 using electromagnetic means, e.g. transponders
• CPC Class Codes: B25B 21/00 Portable power-driven screw or nut setting or loosening tools; details or components, e.g. casings, bodies, of portable power-driven tools not particularly related to the operation performed B25F5/00; for mounting or dismounting wheels B60B29/006; Attachments for drilling apparatus serving the same purpose machines B23P19/06
• CPC Class Codes: B25B 21/002 for special purposes
• CPC Class Codes: B25B 23/14 Arrangement of torque limiters or torque indicators in wrenches or screwdrivers couplings for transmitting rotation or clutches F16D; devices for measuring torque per se G01L

Abstract

The present disclosure includes a method for adjusting the orientation of a first external fixator support member relative to a second external fixator support member, wherein a plurality of adjustable struts connect the first and second external fixator support members. The method include providing a programmable tool, and storing, in a memory unit of the tool, instructions for adjusting the length of each of the plurality of adjustable struts to a desired length. The method further includes receiving identification information corresponding to a first adjustable strut and retrieving, from the memory unit, the instructions for adjusting the length of the first adjustable strut. The method also includes activating an actuator of the tool to adjust the length of the first adjustable strut according to the retrieved instructions. Various embodiments of the programmable tools are also included in the present disclosure.

Claims

1. A programmable tool operable to adjust an external fixation strut having a rotatable adjustment mechanism for length adjustments and a strut identifier operable to provide a signal that identifies the external fixation strut, the programmable tool comprising:

a housing;

a power supply disposed in the housing;

a data port disposed at least partially within the housing, the data port operable to receive instructions for adjusting the external fixation strut;

a signal-sensor disposed at least partially within the housing, the signal-sensor operable to receive the signal from the strut identifier;

a motor disposed within the housing, comprising a first output shaft;

a gear box comprising one or more sets of gears driven by the first output shaft,

wherein the one or more sets of gears drive a second output shaft;

a rotational shaft coupled to the second output shaft, the rotational shaft comprising a strut fitting adapted to engage and rotate the rotatable adjustment mechanism of the external fixation strut;

a controller in electrical communication with the data port, the signal-sensor, the power supply, and the motor;

a memory unit in electrical communication with the controller, the memory unit operable to store data; and

wherein the controller is configured to retrieve, from the memory unit, instructions for adjusting a length of the external fixation strut based on the signal received from the strut identifier by the signal-sensor, and

activate the motor to adjust the length of the external fixation strut according to the retrieved instructions.

2. The tool of claim 1, further comprising a display in electrical communication with the controller, wherein the display comprises a LCD display, a LED display, an array of LEDs, a speaker, a multi-tone generator, a communication interface or a combination thereof.

3. The tool of claim 1, wherein the data port comprises a USB port, an RS232 port, a 25 modem port, cellular modem, a Wi-Fi module, a Bluetooth module, an IR module, an RF module, an RFID module or combination thereof.

4. The tool of claim 1, wherein the signal-sensor comprises a barcode reader, a Bluetooth receiver, an IR receiver, an RF receiver, an RFID receiver, magnetic decoder or combination thereof.

5. The tool of claim 1, wherein the power supply comprises a battery, a DC source, a AC source or a combination thereof.

6. The tool of claim 1, wherein the power supply comprises a rechargeable battery and a connection port for connection to a DC source, a AC source or a combination thereof.

7. The tool of claim 1 wherein the controller comprises a microcontroller, a microcomputer, a programmable logic array, or an application specific integrated circuit under the control of a software program.

8. The tool of claim 1, further comprising a control panel in electrical communication with the controller, the control panel operable to input control signals for one or more operations of the programmable tool.

9. The tool of claim 1, wherein the memory unit is configured to store instructions for adjusting the length of each of a plurality of external fixation struts.

10. A programmable tool operable to adjust an external fixation strut having a rotatable adjustment mechanism for length adjustments and a strut identifier operable to provide a signal that identifies the external fixation strut, the programmable tool comprising:

a housing;

a power supply disposed in the housing;

a data port disposed at least partially within the housing, the data port operable to receive instructions for adjusting the external fixation strut;

a signal-sensor disposed at least partially within the housing, the signal-sensor operable to receive the signal from the strut identifier;

a motor disposed within the housing;

an output shaft driven by the motor, the output shaft comprising a strut fitting adapted to engage and rotate the rotatable adjustment mechanism of the external fixation strut;

a controller in electrical communication with the data port, the signal-sensor, the power supply and the motor; and

wherein the controller is configured to retrieve, from a memory unit, instructions for adjusting a length of the external fixation strut based on the signal received from the strut identifier by the signal-sensor, and

activate the motor to adjust the length of the external fixation strut according to the retrieved instructions.

11. The tool of claim 10, further comprising a display comprises a LCD display, a LED display, an array of LEDs, a speaker, a multi-tone generator, a communications interface or a combination thereof.

12. The tool of claim 10, wherein the data port comprises a modem, cellular modem, a Wi-Fi module, a Bluetooth module, an IR module, an RF module, an RFID module or combination thereof.

13. The tool of claim 10, wherein the signal-sensor comprises a barcode reader, a Bluetooth receiver, an IR receiver, an RF receiver, an RFID receiver, magnetic decoder or combination thereof.

14. The tool of claim 10, wherein the power supply comprises a battery, a DC source, a AC source or a combination thereof.

15. The tool of claim 10, further comprising a gear box, a clutch or both coupling the output shaft and the motor.

16. The tool of claim 10 further comprising a memory unit in electrical communication with the controller to store one or more parameters.

17. The tool of claim 10, further comprising a display in electrical communication with the controller.

18. The tool of claim 10, further comprising a control board in electrical communication with the controller to control one or more operations of the programmable tool.

19. The tool of claim 10, wherein the controller comprises a digital logic circuit selected from a microcontroller, microcomputer, a programmable logic array, an application specific integrated circuit under the control of a software program.