Trocar sleeves having a ball valve

US4233982A · kind A · utility

Assignee

• RICHARD WOLF GMBH · DE

Inventors

• Siegfried Bauer · Bruchsal, DE
• Manfred Boebel · Bauschlott, DE

Key dates

• Filing date: Nov 13, 1978
• Grant date: Nov 18, 1980
• Expiry date: Nov 13, 1998

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61M2039/0673
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A trocar sleeve of the kind having a widened part forming a housing between the distal portion of the sleeve and its proximal portion, which latter extends from a plug for the widened housing part, and a normally closed ball valve in the widened housing part openable by a trocar passing through the sleeve. The widened part forming the housing receives an insert of U-shaped cross section secured to the plug to stress an inserted sealing gasket of deformation-resistant plastics material which provides a valve seating. The space in the U formed by the insert forms a space for the ball of the ball valve to move in, and the ball, is connected to a shaft insertable in the insert and carrying a tangentially loaded helical spring.