Surgical aspirator cannula
First Claim
1. A surgical aspirator cannula comprising:
- an elongated body member having a distal end and a proximal end,said body member defining an aspiration conduit passing therethrough generally between said distal and proximal ends,said proximal end being operatively connectable to a source of vacuum,said body member defining at said distal end a distal end port having a threaded opening,a removable securing means for removably securing a proximal end of an elongated cannula to said distal end port so that a longitudinal passageway of the cannula which engages the cannula proximal end is in fluid communication with said aspiration conduit,said securing means comprising an adaptor having distal and proximal threaded male connectors and a nut secured between them, and an adaptor passageway extending therethrough, said proximal threaded male connector threadably engaging in said threaded opening by rotating said adaptor nut relative to said body member, a ferrule means fitting in said distal threaded male connector, and a cannula nut positionable around the cannula and when tightened causing said ferrule means to grip the cannula end and thereby secure the cannula to said distal end, andsaid ferrule means comprising a cone-shaped first ferrule fitting into said distal threaded male connector and a second ferrule fitting into said first ferrule and have a distal rim which said cannula nut engages.
13 Assignments
0 Petitions
Accused Products
Abstract
A surgical aspirator cannula including an elongated body having a distal end, a distal end port, a proximal end, a proximal end port and an aspirator conduit passing longitudinally therethrough. A cannula is removably secured to the distal end and when secured its cannula tip opening communicates through the cannula passageway with the distal end port. The proximal end of the body member is connected to a vacuum pump. A ball valve assembly is mounted in the body member in the aspiration conduit, and is operated by a hand-operated lever, knob or button supported on the body member. When the lever is then operated the valve assembly is selectively opened or closed to selectively communicate the source of vacuum with the distal end port and thus the cannula. The cannula has its proximal end fitted into a ferrule which fits into an adaptor that is screwed into the distal end portion of the body member. Then when the cannula nut is screwed onto the adaptor by twisting a cannula key fitted onto it, the ferrules will grip the cannula thereby securing it in place.
46 Citations
10 Claims
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1. A surgical aspirator cannula comprising:
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an elongated body member having a distal end and a proximal end, said body member defining an aspiration conduit passing therethrough generally between said distal and proximal ends, said proximal end being operatively connectable to a source of vacuum, said body member defining at said distal end a distal end port having a threaded opening, a removable securing means for removably securing a proximal end of an elongated cannula to said distal end port so that a longitudinal passageway of the cannula which engages the cannula proximal end is in fluid communication with said aspiration conduit, said securing means comprising an adaptor having distal and proximal threaded male connectors and a nut secured between them, and an adaptor passageway extending therethrough, said proximal threaded male connector threadably engaging in said threaded opening by rotating said adaptor nut relative to said body member, a ferrule means fitting in said distal threaded male connector, and a cannula nut positionable around the cannula and when tightened causing said ferrule means to grip the cannula end and thereby secure the cannula to said distal end, and said ferrule means comprising a cone-shaped first ferrule fitting into said distal threaded male connector and a second ferrule fitting into said first ferrule and have a distal rim which said cannula nut engages. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification