Advanced Biomaterial Systems, Inc.

Globus Medical, Inc.

Other

Zimmer Gmbh

Snap-On Technologies, Inc.

Zimmer Technology, Inc.

Gmedelaware 2 LLC

James W Nelson

Roy B Bogert

Donald E Barker

Damian Bianchi

Linda M Trebing

John P Carr

Robert A Winquist

James P Seaton

Charles Hummel

Kenneth R Gleason

Franklin P Gregory, Jr

A bone filler mixing and delivery device includes a mixing section adapted to mix components to form bone filler. A syringe barrel is coupled to the mixing section and has an opening through which the bone filler can be dispensed. A controllable portal can be manipulated to open a flow path between the mixing section and the syringe barrel. A plunger assembly is adapted to extend telescopically in an axial direction through the syringe barrel to dispense the bone filler through the opening.

Telescoping plunger assembly

By providing components securable to anchor pins or screws of different diameters as well as providing clamps which hold associated pins in any position during adjustments, an external fixation or adjustable frame structure is provided which is capable of being quickly and easily assembled in any desired configuration. In the present invention, the frame structure is retained in any assembled configuration in order to allow final adjustments to be made, prior to the final securement of the frame assembly in the precisely desired configuration by closure of each clamp member. In this way, an entire frame assembly is capable of being constructed, adjusted, and readjusted in order to assure each component is oriented in the precisely desired position prior to final closure of the clamping members. In one preferred embodiment, the clamping members employed in the frame structure of the present invention incorporate friction pins internally mounted in each clamp which engages the rod member once this rod is inserted into the jaws of the clamp. In this way, any rod member inserted into the clamping jaws contacts the surface of the jaws and the friction pin, preventing the rod member from sliding or moving relative to the clamp. In addition, by incorporating a uniquely constructed, moving wedge plate that is adjustably engageable with any cooperating anchor pin, secure affixation of the mounting member with the anchor pins of any diameter is easily achieved, regardless of the orientation configuration, or diameter of the anchor pin.

Adjustable bone stabilizing frame system

Apparatus and methods for mixing and dispensing components. The methods and apparatus of the invention are particularly advantageous to manually mix the components of radiopaque bone cement and inject the resulting radiopaque bone cement into skeletal structures. The manually actuated apparatus of the invention comprises: (1) a sealed mixing chamber for mixing components; (2) a dispensing chamber isolated from the sealed mixing chamber; (3) a controllable portal to open a flow path between the sealed mixing chamber and the dispensing chamber so that the dispensing chamber can receive the mixed components after they are mixed; and (4) a drive mechanism associated with the dispensing chamber to force the mixed contents from the dispensing chamber.

Apparatus for mixing and dispensing components

Apparatus and methods for mixing and dispensing components. The methods and apparatus of the invention are particularly advantageous to mix the components of radiopaque bone cement and inject the resulting radiopaque bone cement into skeletal structures. The apparatus of the invention comprises: (1) a sealed mixing chamber for mixing components; (2) a dispensing chamber isolated from the sealed mixing chamber; (3) a controllable portal to open a flow path between the sealed mixing chamber and the dispensing chamber so that the dispensing chamber can receive the mixed components after they are mixed; and (4) a drive mechanism associated with the dispensing chamber to force the mixed contents from the dispensing chamber.

A disposable, limited-use torque limiting wrench is provided having a predetermined maximum number of torque-applying cycles of use for applying a fixed torque to an adaptably connected driven member. This torque limiting wrench includes a rotatable casing including a slotted hub portion and a curved bias spring dimensioned to fit around the slotted hub portion. A dowel pin is also included having a center portion which is dimensioned to fit within and be gripped by a slot formed in the slotted hub portion and to be rotated thereby in response to a torque imparted on the rotatable casing. A torque ring is cooperatively engaged with the above by a predetermined number of pairs of radially extending and substantially equiangularly spaced slots. The respective ends of the dowel pin are uniquely dimensioned to fit within respective ones of the slots which become positioned colinearly therewith as the dowel pin is caused to be circumferentially rotated about the torque ring. The dowel pin ends move from an initial one of the pairs of slots to an adjacent pair of slots during each torque-applying cycle. The curved bias spring operates to bias the dowel pin into engagement with the torque ring. One of the pairs of slots is uniquely dimensioned such when the dowel pin engages therein after a final torque-applying cycle, the dowel pin is disengaged from the slotted hub portion under the urging of the bias spring.

Disposable torque limiting wrench

Growing community of inventors

Morristown, NJ, United States of America

James W Nelson