Stryker Corporation

Don Malackowski

Bruce D Henniges

David A Burke

José Luis Moctezuma De La Barrera

Kris Douglas Eager

David H Grulke

Wenjie Deng

Mark A Wasserman

Michael Dale Dozeman

Christopher D Philipp

Christopher Matthew Tague

Paul M Hoekstra

Douglas L Tyler

Michael R Wildgen

Brey Daniel Hansford

James Keith Rains

Jeff Sollanek

Chris M Tague

Christopher Philipp

Philipp Christopher

Daniel Brey Hansford

Nicholas Lavigna

A system and method for mixing bone cement. The components forming the cement are contained in a cartridge. A motorized device, such as a surgical handpiece, rotates a blade in the cartridge that mixes the cement. The current drawn by the motor is monitored. The current draw is evaluated to determine the viscosity of the cement. If the current draw indicates that the cement is at the target viscosity, the mixing may be terminated. A low current draw measure may be interpreted as an indication that the cement is of low viscosity and that it may be necessary to continue the mixing process.

Method of mixing bone cement with a power tool including monitoring the mixing of the cement based on data regarding characteristics of components forming the cement and the current drawn by the power tool

A rechargable battery with an internal microcontroller. The microcontroller contains a memory in which data regarding the environment to which the battery is exposed are stored. These data are read by a processor integral with the charger used to charge the battery. If these data indicates the battery may have been subjected to a harsh environment, such as being exposed to an excessive temperature, the charger performs a fulle state of health evaluation of the battery.

Battery charger capable of performing a full or partial state of health evaluation of the battery based on the history of the battery

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.

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

A surgical tool system comprising a control console, a powered surgical device, an intermediate attachment removably connected to the surgical device and a cutting accessory removably connected to the intermediate attachment. Internal to the cutting accessory is an identification device that contains data specific to the operation of the accessory. The control console, through the transfer of signals through the powered surgical device and the intermediate attachment reads the data in the cutting accessory. Based on these data, the control console selectively actuates the powered surgical device. In some versions of the invention, the identification device may be an RFID chip. Signals are exchanged between the surgical device and the intermediate attachment and between the intermediate attachment and cutting accessory by inductive coupling. An identification device internal to the intermediate attachment provides the control console with data describing the intermediate attachment.

Method for assembling, identifying and controlling a powered surgical tool assembly assembled from multiple components

A tool system for operating an irrigation pump. The pump includes a fixed pump head driven by a pump motor and a removable tube set. A readable memory such as a RFID is integral with the tube set. The tube set memory contains data describing the physical characteristics of the tube set. A control console reads the data in the tube set memory. Based on these data, the control console then regulates the operation of the pump motor so that fluid, when required, is delivered at those flow rates. These data are also used by the control console to regulate priming of the pump so that when the system is initially set up a head of irrigation fluid can be pumped close to the end of the handpiece from which the fluid is to be discharged.

Method of operating a surgical irrigation pump capable of performing a priming operation

A powered surgical tool with a housing that contains a power generating unit such as a motor. A control module is disposed in a shell that is mounted in the housing. The control module contains a control circuit for regulating the actuation of the power generating unit. The power generating unit emits a signal representative of the operating state of the unit that is transmitted through the structural material forming the shell. Also internal to the control module shell is a sensor that monitors the signal emitted by the power generating unit. This signal output by the sensor is applied to the control circuit. The control circuit, based on the sensor signal regulates actuation of the power generating unit. Wherein the power generating unit is a motor, the signal emitted is the magnetic field that varies with rotor position. The sensor monitors the strength of this field.

Powered surgical tool with control module that contains a sensor for remotely monitoring the tool power generating unit

A surgical tool system including plural powered surgical handpieces. The handpieces are removably connected to a single control console. The control console has a power supply. A controller internal to the control console simultaneously supplies power to the plural handpieces. In the event the handpieces collectively draw more power than the power supply can provide, the control console temporarily stops the application of power to one of the handpieces.

Control console to which powered surgical handpieces are connected, the console configured to simultaneously energize more than one and less than all of the handpieces

An irrigator ( ) useful for surgical and medical procedures. The irrigator includes a handpiece ( ) to which a tip assembly ( ) is attached. The handpiece ( ) includes a drain tube ( ) that extends through the body of the handpiece and outside of the handpiece to the complementary suction system. The tip assembly includes a discharge tube ( ) that is snap secured into the front of the handpiece and a suction tube ( ) that seats in the open front end of the drain tube. A removable splash shield ( ) is attached to the front end of the tip assembly. A trigger ( ) allows one-handed control of, the position of the handpiece, the on/off state of the irrigator and the rate at which fluid is discharged from the irrigator. A rechargeable power pack ( ) can be used to supply the energization current needed to activate a number of different handpieces at different speeds.

Surgical/medical irrigator with rechargeable battery pack

An irrigator (20) useful for surgical and medical procedures. The irrigator includes a handpiece (22) to which a tip assembly (30) is attached. The handpiece (22) includes a drain tube (50) that extends through the body of the handpiece and outside of the handpiece to the complementary suction system. The tip assembly includes a discharge tube (32) that is snap secured into the front of the handpiece and a suction tube (48) that seats in the open front end of the drain tube. A removable splash shield (181) is attached to the front end of the tip assembly. A trigger (44) allows one-handed control of, the position of the handpiece, the on/off state of the irrigator and the rate at which fluid is discharged from the irrigator. A rechargeable power pack (222) can be used to supply the energization current needed to activate a number of different handpieces at different speeds.

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Schoolcraft, MI, United States of America

Don Malackowski