Straumann Holding Ag

Alain Hedinger

Simon Zollinger

Sven Schneider

Tobias Brechbühl

Tobias Brechbuehl

A dental drill guiding system includes a drill guide including a hollow tube having an exterior surface and a guide sleeve including an internal surface defining a through bore configured to receive the hollow tube of the drill guide. The exterior surface of the hollow tube and guide sleeve's internal surface have complementary anti-rotation sections. The drill guide's hollow tube further includes at least one radially extending protrusion limited in the axial extent and formed by an increase in radius of the hollow tube in the apical direction and dimensioned for accommodation in at least one undercut of the guide sleeve, such that when at least one protrusion of the hollow tube is housed in at least one undercut of the guide sleeve the hollow tube is axially retained within the guide sleeve such that removal of the drill guide from the guide sleeve in the coronal direction is prevented.

Dental drill guiding system

A torque wrench as a ratchet instrument for medical technology, including receiving opening which has head region, neck region adjoining head region, rod-shaped actuating lever fastened to neck region for application of torque to the head region, and enclosure forming receiving opening of head region. Furthermore, torque wrench includes spring clip and latching lug formed thereon. The latching lug in rest position of latching lug protrudes into receiving opening and in entraining portion of latching lug is intended to interact with counterpart surface of insertion instrument inserted into enclosure during rotation in tightening direction of actuating lever in entraining position. The latching lug is intended to move into release position during rotation contrary to tightening direction against force of spring clip, in order to provide free running between head region and insertion instrument. The enclosure has break extending over entire cross-section of enclosure and forms spring clip.

Growing community of inventors

Basel, Switzerland

Alain Hedinger