Trocar sleeves having a ball valve

US4379458A · kind A · utility

Assignee

• RICHARD WOLF GMBH · DE

Inventors

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

Key dates

• Filing date: Jul 14, 1980
• Grant date: Apr 12, 1983
• Expiry date: Jul 14, 2000

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S604/905
• 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 ball valve in the widened housing part which ball valve is closable by resilient means and which is openable by a trocar passing through the sleeve. In this invention, the widened part forming the housing receives an insert of U-shaped cross-section which is securable to the plug to stress an inserted sealing gasket of deformation-resistant plastics material which is to be drilled through to form 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, the ball, before the insert is screwed to the plug, being connected to a shaft insertable in the insert and carrying a tangentially loaded helical spring and being placed under stress by connecting the insert to the plug.