Trocar sleeve with a duckbill valve
First Claim
Patent Images
1. A combination trocar sleeve (1, 1′
- ) and valve for introducing instruments (9) into gas filled body spaces, said sleeve including an insertion tube (2, 2′
) and a valve chamber (3, 3′
) proximally arranged thereon with a duckbill valve (4, 4′
) of elastic material disposed therein, said duckbill valve comprising a tubular body (5, 5′
) that extends coaxially with respect to an axis of the insertion tube, said tubular body having, at its end directed toward the insertion tube (2, 2′
), two flat oblique walls (7, 7′
) that form a ridge with a slit (8, 8′
) extending transverse to the tube axis, and wherein the tubular body (5, 5′
), when uninstalled, has a size dimension in a direction transverse to the slit (8,8′
), said size dimension being a first value, and wherein said internal valve chamber (3, 3′
), which is adapted to receive said tubular body, has a size dimension of a second value, said first value being greater than said second value.
1 Assignment
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Accused Products
Abstract
A trocar sleeve for introducing instruments into gas filled body spaces including an insertion tube and a valve chamber disposed proximally on it with a duckbill valve of elastic material. The duck bill value has a tubular body extending coaxially with respect to the axis of the insertion tube. An end of the body directed towards the insertion tube has two flat oblique walls forming a ridge with a slit extending therein transverse to the axis of the tube. The tubular body is oversized in a direction transverse to the slit with respect to the internal size of the valve chamber in the uninstalled rest state.
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Citations
3 Claims
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1. A combination trocar sleeve (1, 1′
- ) and valve for introducing instruments (9) into gas filled body spaces, said sleeve including an insertion tube (2, 2′
) and a valve chamber (3, 3′
) proximally arranged thereon with a duckbill valve (4, 4′
) of elastic material disposed therein, said duckbill valve comprising a tubular body (5, 5′
) that extends coaxially with respect to an axis of the insertion tube, said tubular body having, at its end directed toward the insertion tube (2, 2′
), two flat oblique walls (7, 7′
) that form a ridge with a slit (8, 8′
) extending transverse to the tube axis, and wherein the tubular body (5, 5′
), when uninstalled, has a size dimension in a direction transverse to the slit (8,8′
), said size dimension being a first value, and wherein said internal valve chamber (3, 3′
), which is adapted to receive said tubular body, has a size dimension of a second value, said first value being greater than said second value. - View Dependent Claims (2, 3)
- ) and valve for introducing instruments (9) into gas filled body spaces, said sleeve including an insertion tube (2, 2′
Specification
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Current AssigneeOlympus Winter & Ibe GmbH (Olympus Corporation)
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Original AssigneeOlympus Winter & Ibe GmbH (Olympus Corporation)
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InventorsWiegand, Michael, Nösel, Bernd
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Primary Examiner(s)Hayes, Michael J.
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Assistant Examiner(s)Lewis, Michelle A
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Application NumberUS09/578,943Time in Patent Office824 DaysField of Search264/164.01, 264/167.01, 264/167.03, 264/167.04, 251/149.1, 604/249, 604/256US Class Current251/149.1CPC Class CodesA61B 17/3498 Valves therefor, e.g. flapp...
