Stryker Corporation

Adam Darwin Downey

Kurosh Nahavandi

Clifford Edwin Lambarth

Chad Conway Souke

Robert G Cox

Scott A Rhodes

Neal R Butler

Matthew Owen

Michael Joseph Hayes

Aaron Douglas Furman

Jason James Wroblewski

Robert Mitchell Baldwin, Ii

Krishna Sandeep Bhimavarapu

Martin W Stryker

Patrick J Cobler

Jonathan Mark Greenbank

Mark William Friedman

Darryl D Daniel

Benjamin Fineout

Robert M Baldwin, Ii

Michael Teasdale Smith

Jon Bodnar

Cory Patrick Herbst

Guy Lemire

Jeffrey C Shiery

Anuj K Sidhu

Anthony William Gatica

Jeffrey L Lewandowski

Scott J Davis

Michael W Steffler

Guillaume Gras

Pascal Castonguay

Conor McCarthy

Martin Plante

James T Thwaites

Brett Robert Merkel

Brett Merkel

Anthony Gatica

Systems and methods for controlling vibrations of an ultrasonic handpiece generate an AC drive signal applied to a transducer of the ultrasonic handpiece to vibrate a tip of the ultrasonic handpiece. A property relating to a stiffness of tissue being contacted by the vibrating tip is determined based on a measured voltage and a measured current of the AC drive signal. A target displacement for the tip is determined based on the tissue property, and the AC drive signal is adjusted to achieve the determined target displacement.

Control of an ultrasonic handpiece

An adapter configured to receive a drive signal from a control console and to provide the drive signal to an ultrasonic surgical handpiece. The adapter includes a receptacle for receiving the ultrasonic surgical handpiece and providing the drive signal to the ultrasonic surgical handpiece. The adapter includes a module for detecting a presence of the ultrasonic surgical handpiece and a connector to be inserted into a receptacle of the control console to receive the drive signal from the control console. The adapter includes a radio-frequency identification device coupled to the connector and to a memory storing a maximum and minimum frequency for driving the ultrasonic surgical handpiece. The radio-frequency identification device transmits the maximum and minimum frequency from the memory to the control console via the connector using an RFID protocol in response to the module detecting the presence of the ultrasonic surgical handpiece.

Adapter and methods for coupling a surgical handpiece to a control console

An ultrasonic surgical tool system with a tip capable of simultaneously vibrating in plural modes. The system includes a console capable of supplying a drive signal to the tip that includes plural components. Each component has a frequency characteristic that is based in part on the equivalent of current through the mechanical components of the tip. The frequency components are different from each other. Based on the application of drive signal the tip undergoes non-linear vibrations.

Ultrasonic surgical tool capable of vibrating in plural modes and a drive system that induces non-linear vibrations in the tool tip

A control console for a powered surgical tool. The console includes a transformer that supplies the drive signal to the surgical tool. A linear amplifier with active resistors selectively ties the ends of the transformer primary winding between ground and the open circuit state. Feedback voltages from the transformer windings regulate the resistances of the active resistors.

System and method for driving an ultrasonic handpiece with a linear amplifier

An ambulance cot loading and unloading system for an emergency vehicle includes a base for mounting in the emergency vehicle and an arm mounted for linear movement along the base, wherein the arm configured to support a cot while the cot is being loaded into or unloaded from the emergency vehicle. The ambulance cot loading and unloading system further includes an indicator mounted relative to the arm and a control system, which is in communication with the indicator and configured to generate a status indication of the cot loading and unloading system at the indicator.

Ambulance cot and loading and unloading system

An ultrasonic surgical tool system for actuating a handpiece with a tip. The frequency of the drive signal applied to the handpiece drivers is a function of the equivalent of current through the mechanical components of the handpiece and tip and the frequency responsiveness of these components.

System and method for driving an ultrasonic handpiece as a function of the mechanical impedance of the handpiece

An aspiration system to control vacuum pressure in an ultrasonic surgical handpiece to result in improved control responsiveness during aspiration. The system comprises a console including a vacuum pump. The system includes a cassette comprising a joint that divides a vacuum path into at least two flow paths. A first joint port couples to a first flow path. A second flow path is coupled to a second joint port, a third flow path is coupled to a third joint port, and a fourth flow path is coupled to a port on a surgical waste receiver. A first sensor senses pressure in the fourth flow path and provides a waste receiver pressure signal. A second sensor senses pressure in the third flow path and provides a tip pressure signal. The controller controls a position of a first vent valve and a second vent valve based on the waste receiver pressure signal and the tip pressure signal, respectively.

Systems and methods for improving control responsiveness during aspiration

Control consoles and methods for supplying a drive signal to a surgical tool are provided. The control console comprises a transformer with primary and secondary windings. The primary winding receives an input signal from a power source and induces the drive signal in the secondary winding to supply the drive signal to the surgical tool. A first current source comprising a leakage control winding is coupled to a path of the drive signal. The primary winding induces a first cancellation current in the leakage control winding to inject into the path of the drive signal to cancel leakage current. A sensor coupled to the path of the drive signal outputs a sensed signal to provide feedback related to leakage current. The sensor may connect to a second leakage current cancellation source and/or a fault detection stage. The power source may be variable and may also energize the second current source.

System and methods for controlling patient leakage current in a surgical system

Systems and methods of controlling an ultrasonic surgical tool with a console are provided. A first drive signal is applied to the ultrasonic surgical tool. A characteristic of a harmonic signal resulting from application of the first drive signal to the ultrasonic surgical tool is acquired. A cancellation signal is generated based on the characteristic of the harmonic signal. The first drive signal and the cancellation signal are combined to produce a second drive signal that is sinusoidal. The second drive signal is applied to the ultrasonic surgical tool such that presence of the harmonic signal resulting from application of the second drive signal is reduced relative to presence of the harmonic signal resulting from application of the first drive signal.

System and method for controlling an ultrasonic tool

Control console for a powered surgical tool that includes a transformer with a secondary winding across which the tool drive signal is present. Also internal to the transformer is a matched current source that consists of a leakage control winding and a capacitor. The current sourced by the matched current at least partially cancels out leakage current that may be present.

Power console for a surgical tool that includes a transformer with an integrated current source for producing a matched current to offset the parasitic current

Adapter and methods for coupling an ultrasonic surgical handpiece to a control console

Display screen with animated graphical user interface

An ultrasonic tool system with a console and a tip that has a distal end that when vibrated vibrates both longitudinally and torsionally. The console applies a drive signal to the drivers that vibrate the tip that is at a longitudinal mechanical cancellation frequency. Consequently, when the tip is vibrated, at the distal end the longitudinal component of a first resonant mode of the tip cancel out the longitudinal component of the second resonant move of the tip so the distal end of the tip engages in vibrations that substantially torsional and only minimally longitudinal.

Ultrasonic surgical tool system including a tip capable of simultaneous longitudinal and torsional movement and a console capable of applying a drive signal to the tip so the tip engages in substantially torsional oscillations

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Kalamazoo, MI, United States of America

Adam Darwin Downey