Valve assembly including diameter reduction structure for trocar

a valve assembly and diameter reduction technology, applied in the field of diameter reduction, can solve the problems of loss of seal integrity, and limited ability of fixed outer seals to sustain seals
US20060020281A1Inactive Publication Date: 2006-01-26TYCO HEALTHCARE GRP LP
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
TYCO HEALTHCARE GRP LP
Publication Date
2006-01-26
Estimated Expiration
Not applicable · inactive patent

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Abstract

A surgical seal assembly includes a sleeve housing adapted to be operatively connected to a surgical sleeve, a seal housing adapted for releasable mounting to the sleeve housing and having a seal member with inner portions adapted to permit passage of a surgical object in substantial sealed relation therewith, and a manual lock member associated with the sleeve housing. The manual lock member is adapted for movement relative to the seal housing between a first position corresponding to a release position of the seal housing to permit removal of the seal housing from mounting to the sleeve housing and a second position corresponding to a lock position of the seal housing to secure the seal housing to the sleeve housing. The manual lock member is preferably adapted for rotational movement relative to a longitudinal axis of the seal housing to move between the first and second positions thereof.
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Description

CROSS REFERENCE TO RELATED APPLICATIONS

[0001] This application is a continuation-in-part of U.S. patent application Ser. No. 10 / 380,942, which is a national phase application of International Application No. PCT / US01 / 31911, filed Oct. 12, 2001, which claims priority to U.S. Application Ser. No. 60 / 240,506, filed Oct. 13, 2000, the entire contents of each application being hereby incorporated by their entireties by reference herein.BACKGROUND

[0002] 1. Technical Field

[0003] The present disclosure relates to a mechanism for controlling the operable inside diameter of a passageway through a valve assembly of a trocar housing. More particularly, the present disclosure relates to a diameter reduction structure that restricts the movement of small surgical instruments and. accommodates large diameter surgical instruments in the passageway of a trocar housing to facilitate the maintenance of a gas tight seal formed by the valve assembly.

[0004] 2. Background of Related Art

[0005] Trocar ...

Claims

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