The University of British Columbia

British Columbia Cancer Agency Branch

Robin John Noel Coope

Robert N Meek

Steven Charles Dimmer

Daniel Reed Baker

David Thomas Stinson

Edward Scott Harshman

Lok Tin Lam

Lorne Arthur Whitehead

Andrzej Kotlicki

Scott Young

Jared Raymond Slobodan

Timothy Schwab

Qingan Zhu

Michele Ann Mossman

Dmitri Nikolaevich Grandmaison

Implantable devices for fixation of curved bone such as the pelvic ring pubic symphysis and acetabulum, and methods for the use of the devices are disclosed. The implantable devices are convertible between a flexible state and a rigid state, and include an elongate structure having a proximal bone interface, a main body, and a distal bone interface. In a flexible state, the devices may be inserted along, and conform to a curved pathway, and in the rigid state, the devices may support the mechanical loads required to fixate a fracture.

Shape adaptable intramedullary fixation device

Devices for treating a bone and methods of inserting such devices into a bone are disclosed. A device for treating a bone may include a flexible tube, a stiffening mechanism and an actuator. The flexible tube has a distal end and a proximal end. The stiffening mechanism within the flexible tube is configured to cause the flexible tube to become rigid. The actuator is configured to cause the stiffening mechanism to cause the flexible tube to become rigid in response to the actuator being actuated.

Intramedullary fixation system for management of pelvic and acetabular fractures

A hammer drill attachment is provided for attachment to a bi-directional surgical drill. The hammer drill attachment is configured to provide a rotating output in a first direction of rotation when the drill is operated in its first direction of rotation, and the hammer drill attachment is configured to provide a hammering output when the drill is operated in its second direction of rotation.

Cannulated hammer drill attachment

An optical switch for controllably switching an interface between a reflective state in which incident light undergoes total internal reflection and a non-reflective state in which total internal reflection is prevented. In one such switch a cell contains a fluid. One side of the cell forms the light incident interface. A membrane is suspended in the fluid. One pair of electrodes is applied to opposite sides of the membrane. Another electrode pair is applied to the cell's interface side and to the cell's opposite side. A variable voltage potential is applied between selected ones of the electrodes. Application of the voltage potential between selected ones of the membrane and cell electrodes moves the membrane into optical contact with the interface, producing the non-reflective state. Application of the voltage potential between other selected ones of the membrane and cell electrodes moves the membrane away from optical contact with the interface, producing the reflective state.

Optical switching by controllable frustration of total internal reflection

An optical switch for controllably switching an interface between a reflective state in which incident light undergoes total internal reflection and a non-reflective state in which total internal reflection is prevented. In one such switch an elastomeric dielectric has a stiffened surface portion. A separator positioned between the interface and the stiffened surface portion maintains a gap there-between. A voltage source applies a variable voltage potential between electrodes on the interface and stiffened surface portion respectively. The applied voltage potential moves the stiffened surface portion into optical contact with the interface, producing the non-reflective state. In the absence of a voltage potential the separator moves the stiffened surface portion away from optical contact with the interface, producing the reflective state. In another such switch a cell contains a fluid. One side of the cell forms the light incident interface. A membrane is suspended in the fluid. One pair of electrodes is applied to opposite sides of the membrane. Another electrode pair is applied to the cell's interface side and to the cell's opposite side. A variable voltage potential is applied between selected ones of the electrodes. Application of the voltage potential between selected ones of the membrane and cell electrodes moves the membrane into optical contact with the interface, producing the non-reflective state. Application of the voltage potential between other selected ones of the membrane and cell electrodes moves the membrane away from optical contact with the interface, producing the reflective state.

Charged particles suspended in a medium such as Fluorinert&trade; Electronic Liquid are used to electrophoretically control total internal reflection (TIR) at a retro-reflective surface formed on a high refractive index material. Prismatic structures redirect ambient light from an overhead light source toward a display image and then from the image to the region in front of the image, yielding a high contrast reflective display. A transparent planar waveguide front lights the display with sequential flashes of red, blue and green light to generate a full color display. TIR can also be controlled at retro-reflective surfaces by means of a vapor-liquid phase transition, or by changing the absorption coefficient of a material using electrical, chemical and/or electrochemical methods.

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Vancouver, Canada

Robin John Noel Coope