US5820604A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cannula cap including yeildable outer seal and flapper valve
Assignee: Endolap Inc
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Filing: 1996-06-11
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Granted: 1998-10-13
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Expires: 2016-06-11
Abstract
Abstract A cannula cap embodiment includes a monolithic elastomeric cap body having a sidewall portion for engaging a proximal end of a cannula, and an end portion connected to the cylindrical sidewall portion. The cannula cap also includes a monolithic flapper valve positioned within an interior of the cap body. The monolithic flapper valve includes a flapper portion, a ringed-shaped flapper mounting portion connected to adjacent interior portions of the cap body, and an integrally formed hinge portion connecting the flapper mounting portion to the flapper portion for permitting the flapper portion to move to an open position when an instrument is positioned within the instrument receiving passageway, and for biasing the flapper portion toward a closed position when an instrument is removed from the instrument receiving passageway. An instrument seal portion of the end portion of the cap body includes a reduced thickness wall portion adjacent an outer opening and extending in a plane transverse to the instrument receiving passageway, and an outwardly extending pleat surrounding the reduced thickness wall portion. The end portion of the cap body also includes a generally planar outer annular portion surrounding the pleat generally aligned with an imaginary plane defined by the reduced thickness wall portion.
Inventors
- 👤 Richard Q. Fox
- 👤 Larry A. Gilstrap
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:37
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/34; A61B17/3498; A61B17/3462; F; F16; F16K; F16K15/00; F16K15/14; F16K15/144; F16K15/1441; Y; Y10; Y10S; Y10S215/00; Y10S215/03; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7879; Y10T137/788; Y10T137/7882; Y10T137/7883; Y10T137/7885
Claims Analysis
Total Claims: 41
Claim 1
Independent Claim
198 words
A cannula cap for positioning on a proximal end of a cannula of a type for receiving an instrument therethrough, said cannula cap comprising: a monolithic elastomeric cap body comprising a cylindrical sidewall portion for engaging a proximal end of a cannula, an interior portion for receiving a valve, and an end portion connected to said sidewall portion, said end portion having a bore therethrough defining an instrument receiving passageway, said cap body further including a series of transverse ribs on an exterior thereof; and a monolithic flapper valve positioned within the interior portion of said cap body and comprising a flapper portion, a flapper mounting portion having a ring shaped and being connected to the interior portion of said cap body, and an integrally formed hinge portion connecting said flapper mounting portion to said flapper portion for permitting said flapper portion to move to an open position when an instrument is positioned within the instrument receiving passageway and for biasing said flapper portion toward a closed position when an instrument is removed from said instrument receiving passageway, said hinge portion having a plurality of spaced apart straps extending between said flapper mounting portion and said flapper portion.
Claim 2
Dependent Claim
198 words
A cannula cap for positioning on a proximal end of a cannula of a type for receiving an instrument therethrough, said cannula cap comprising: a monolithic elastomeric cap body comprising a cylindrical sidewall portion for engaging a proximal end of a cannula, an interior portion for receiving a valve, and an end portion connected to said sidewall portion, said end portion having a bore therethrough defining an instrument receiving passageway, said cap body further including a series of transverse ribs on an exterior thereof; and a monolithic flapper valve positioned within the interior portion of said cap body and comprising a flapper portion, a flapper mounting portion having a ring shaped and being connected to the interior portion of said cap body, and an integrally formed hinge portion connecting said flapper mounting portion to said flapper portion for permitting said flapper portion to move to an open position when an instrument is positioned within the instrument receiving passageway and for biasing said flapper portion toward a closed position when an instrument is removed from said instrument receiving passageway, said hinge portion having a plurality of spaced apart straps extending between said flapper mounting portion and said flapper portion.
Claim 3
Dependent Claim
32 words
A cannula cap according to claim 1 wherein said end portion further comprises an instrument seal portion having an outer opening for receiving the instrument therethrough and forming a gas seal therewith.
Claim 4
Dependent Claim
46 words
A cannula cap according to claim 2 wherein said instrument seal portion comprises yieldable sealing means for permitting movement of the instrument in at least one of a direction of the instrument receiving passageway and transverse thereto and while maintaining the gas seal with the instrument.
Claim 5
Dependent Claim
33 words
A cannula cap according to claim 3 wherein said yieldable sealing means comprises a reduced thickness wall portion adjacent the outer opening and extending in a plane transverse to the instrument receiving passageway.
Claim 6
Dependent Claim
26 words
A cannula cap according to claim 4 wherein said yieldable sealing means further comprises an outwardly extending generally circular pleat surrounding the reduced thickness wall portion.
Claim 7
Dependent Claim
37 words
A cannula cap according to claim 5 wherein said end portion further comprises a generally planar outer annular portion surrounding said pleat and being generally aligned with an imaginary plane defined by said reduced thickness wall portion.
Claim 8
Dependent Claim
24 words
A cannula cap according to claim 4 wherein said reduced thickness wall portion further comprises a circular reinforcing rib immediately adjacent the outer opening.
Claim 9
Dependent Claim
31 words
A cannula cap according to claim 1 wherein said end portion of said cap body comprises a throat portion having a distal end defining a valve seat for said flapper portion.
Claim 10
Dependent Claim
34 words
A cannula cap according to claim 8 wherein said end portion of said cap body further has an annular recess surrounding said throat portion and further defining the valve seat for the flapper portion.
Claim 11
Dependent Claim
47 words
A cannula cap according to claim 1 wherein said flapper portion comprises a generally planar portion and a dome shaped portion connected thereto, and wherein said dome shaped portion extends into the instrument receiving passageway to seal same when said flapper portion is in the closed position.
Claim 12
Dependent Claim
37 words
A cannula cap according to claim 1 wherein said cap body has a generally circular valve receiving channel extending along the interior portion thereof; and wherein said flapper mounting portion is positioned within said valve receiving channel.
Claim 13
Dependent Claim
36 words
A cannula cap according to claim 1 wherein said cap body further includes a series of transverse ribs on the interior portion thereof for removably securing the cannula cap to the proximal end of the cannula.
Claim 14
Dependent Claim
24 words
A cannula according to claim 1 wherein said flapper valve comprises a flexible plastic material more rigid than elastomeric material of said cap body.
Claim 15
Dependent Claim
14 words
A cannula cap according to claim 1 wherein said cap body comprises silicone rubber.
Claim 16
Dependent Claim
215 words
A cannula cap for positioning on a proximal end of a cannula of a type for receiving an instrument therethrough, said cannula cap comprising: a monolithic elastomeric cap body comprising a sidewall portion for engaging a proximal end of a cannula, and an end portion connected to said sidewall portion, said end portion having a bore therethrough defining an instrument receiving passageway, said end portion further comprising an instrument seal portion having an outer opening for receiving the instrument therethrough and forming a gas seal therewith, said cap body further including a series of transverse ribs on an exterior thereof, said instrument seal portion comprising a reduced thickness wall portion adjacent the outer opening and extending in a plane transverse to the instrument receiving passageway, an outwardly extending pleat surrounding the reduced thickness wall portion, and a generally planar outer portion surrounding said pleat and being generally aligned with an imaginary plane defined by said reduced thickness wall portion; and a flapper valve positioned within an interior of said cap body and movable between an open position when an instrument is positioned within the instrument receiving passageway and a closed position when an instrument is removed from the instrument receiving passageway, said flapper valve having a hinge portion including a plurality of spaced apart straps.
Claim 17
Dependent Claim
215 words
A cannula cap for positioning on a proximal end of a cannula of a type for receiving an instrument therethrough, said cannula cap comprising: a monolithic elastomeric cap body comprising a sidewall portion for engaging a proximal end of a cannula, and an end portion connected to said sidewall portion, said end portion having a bore therethrough defining an instrument receiving passageway, said end portion further comprising an instrument seal portion having an outer opening for receiving the instrument therethrough and forming a gas seal therewith, said cap body further including a series of transverse ribs on an exterior thereof, said instrument seal portion comprising a reduced thickness wall portion adjacent the outer opening and extending in a plane transverse to the instrument receiving passageway, an outwardly extending pleat surrounding the reduced thickness wall portion, and a generally planar outer portion surrounding said pleat and being generally aligned with an imaginary plane defined by said reduced thickness wall portion; and a flapper valve positioned within an interior of said cap body and movable between an open position when an instrument is positioned within the instrument receiving passageway and a closed position when an instrument is removed from the instrument receiving passageway, said flapper valve having a hinge portion including a plurality of spaced apart straps.
Claim 18
Dependent Claim
23 words
A cannula cap according to claim 15 wherein said reduced thickness wall portion further comprises a reinforcing rib immediately adjacent the outer opening.
Claim 19
Dependent Claim
90 words
A cannula cap according to claim 15 wherein said flapper valve is a monolithic flapper valve comprising: a flapper portion; a flapper mounting portion being connected to adjacent interior portions of said cap body; and an integrally formed hinge portion connecting said flapper mounting portion to said flapper portion for permitting said flapper portion to move to the open position when an instrument is positioned within the instrument receiving passageway and for biasing said flapper portion toward the closed position when an instrument is removed from said instrument receiving passageway.
Claim 20
Dependent Claim
31 words
A cannula cap according to claim 17 wherein said end portion of said cap body comprises a throat portion having a distal end defining a valve seat for said flapper portion.
Claim 21
Dependent Claim
33 words
A cannula cap according to claim 18 wherein said end portion of said cap body further has a recess surrounding said throat portion and further defining the valve seat for the flapper portion.
Claim 22
Dependent Claim
47 words
A cannula cap according to claim 17 wherein said flapper portion comprises a generally planar portion and a dome shaped portion connected thereto, and wherein said dome shaped portion extends into the instrument receiving passageway to seal same when said flapper portion is in the closed position.
Claim 23
Dependent Claim
48 words
A cannula cap according to claim 17 wherein said cap body has a valve receiving channel extending along an interior portion thereof adjacent a corner defined between said end portion and said cylindrical sidewall portion; and wherein said flapper mounting portion is positioned within said valve receiving channel.
Claim 24
Dependent Claim
35 words
A cannula cap according to claim 15 wherein said cap body further includes a series of transverse ribs on an interior thereof for removably securing the cannula cap to the proximal end of the cannula.
Claim 25
Dependent Claim
21 words
A cannula according to claim 15 wherein said flapper valve comprises a flexible plastic material more rigid than said cap body.
Claim 26
Dependent Claim
165 words
A cannula cap for positioning on a proximal end of a cannula of a type for receiving an instrument therethrough, said cannula cap comprising: a cap body for engaging a proximal end of a cannula, said cap body comprising an end portion having a bore therethrough defining an instrument receiving passageway, said cap body further including a series of transverse ribs on an exterior thereof; and a monolithic flapper valve positioned adjacent said cap body and comprising a flapper portion, a flapper mounting portion positioned adjacent said cap body, and an integrally formed hinge portion connecting said flapper mounting portion to said flapper portion for permitting said flapper portion to move to an open position when an instrument is positioned within the instrument receiving passageway and for biasing said flapper portion toward a closed position when an instrument is removed from said instrument receiving passageway, said hinge portion having a plurality of spaced apart straps extending between said flapper mounting portion and said flapper portion.
Claim 27
Dependent Claim
165 words
A cannula cap for positioning on a proximal end of a cannula of a type for receiving an instrument therethrough, said cannula cap comprising: a cap body for engaging a proximal end of a cannula, said cap body comprising an end portion having a bore therethrough defining an instrument receiving passageway, said cap body further including a series of transverse ribs on an exterior thereof; and a monolithic flapper valve positioned adjacent said cap body and comprising a flapper portion, a flapper mounting portion positioned adjacent said cap body, and an integrally formed hinge portion connecting said flapper mounting portion to said flapper portion for permitting said flapper portion to move to an open position when an instrument is positioned within the instrument receiving passageway and for biasing said flapper portion toward a closed position when an instrument is removed from said instrument receiving passageway, said hinge portion having a plurality of spaced apart straps extending between said flapper mounting portion and said flapper portion.
Claim 28
Dependent Claim
19 words
A cannula cap according to claim 24 wherein said cap body is a monolithic body comprising an elastomeric material.
Claim 29
Dependent Claim
91 words
A cannula cap according to claim 24 wherein said end portion further comprises an instrument seal portion having an outer opening therethrough in fluid communication with the instrument receiving passageway, and wherein said instrument seal portion comprises: a reduced thickness wall portion adjacent the outer opening and extending in a plane transverse to the instrument receiving passageway; an outwardly extending pleat surrounding the reduced thickness wall portion; and a generally planar outer portion surrounding said pleat and being generally aligned with an imaginary plane defined by said reduced thickness wall portion.
Claim 30
Dependent Claim
50 words
A cannula cap according to claim 24 wherein said end portion includes a throat portion having a distal end defining a valve seat for said flapper portion; and wherein said end portion further has a recess surrounding said throat portion and further defining the valve seat for the flapper portion.
Claim 31
Dependent Claim
60 words
A cannula cap according to claim 24 wherein said cap body comprises a sidewall portion connected to said end portion; wherein said cap body has a valve receiving channel extending along an interior portion thereof adjacent a corner defined between said end portion and said sidewall portion; and wherein said flapper mounting portion is positioned within said valve receiving channel.
Claim 32
Dependent Claim
20 words
A cannula according to claim 24 wherein said flapper valve comprises a plastic material more rigid that said cap body.
Claim 33
Dependent Claim
43 words
A cannula cap according to claim 24 wherein said cap body comprises a sidewall portion connected to said end portion; wherein said sidewall portion of said cap body has a generally cylindrical shape; and wherein said flapper mounting portion has a ring shape.
Claim 34
Dependent Claim
167 words
A medical device for insertion into a body and comprising: a cannula comprising a tube having a distal end and a proximal end; and a cannula cap connected to the proximal end of said cannula, said cannula cap comprising a cap body comprising an end portion having a bore therethrough defining an instrument receiving passageway, said cap body having a series of transverse ribs on an exterior thereof; and a monolithic flapper valve positioned adjacent said cap body and comprising a flapper portion, a flapper mounting portion positioned adjacent said cap body, and an integrally formed hinge portion connecting said flapper mounting portion to said flapper portion for permitting said flapper portion to move to an open position when an instrument is positioned within the instrument receiving passageway and for biasing said flapper portion toward a closed position when an instrument is removed from said instrument receiving passageway, said hinge having a plurality of spaced apart straps extending between said flapper mounting portion and said flapper portion.
Claim 35
Dependent Claim
167 words
A medical device for insertion into a body and comprising: a cannula comprising a tube having a distal end and a proximal end; and a cannula cap connected to the proximal end of said cannula, said cannula cap comprising a cap body comprising an end portion having a bore therethrough defining an instrument receiving passageway, said cap body having a series of transverse ribs on an exterior thereof; and a monolithic flapper valve positioned adjacent said cap body and comprising a flapper portion, a flapper mounting portion positioned adjacent said cap body, and an integrally formed hinge portion connecting said flapper mounting portion to said flapper portion for permitting said flapper portion to move to an open position when an instrument is positioned within the instrument receiving passageway and for biasing said flapper portion toward a closed position when an instrument is removed from said instrument receiving passageway, said hinge having a plurality of spaced apart straps extending between said flapper mounting portion and said flapper portion.
Claim 36
Dependent Claim
19 words
A medical device according to claim 31 wherein said cap body is a monolithic body comprising an elastomeric material.
Claim 37
Dependent Claim
91 words
A medical device according to claim 31 wherein said end portion further comprises an instrument seal portion having an outer opening therethrough in fluid communication with the instrument receiving passageway, and wherein said instrument seal portion comprises: a reduced thickness wall portion adjacent the outer opening and extending in a plane transverse to the instrument receiving passageway; an outwardly extending pleat surrounding the reduced thickness wall portion; and a generally planar outer portion surrounding said pleat and being generally aligned with an imaginary plane defined by said reduced thickness wall portion.
Claim 38
Dependent Claim
54 words
A medical device according to claim 31 wherein said end portion includes a throat portion having a distal end defining a valve seat for said flapper portion; and wherein said end portion of said cap body further has a recess surrounding said throat portion and further defining the valve seat for the flapper portion.
Claim 39
Dependent Claim
55 words
A medical device according to claim 31 wherein said cap body comprises a sidewall portion connected to said end portion; wherein said cap body has a valve receiving channel extending along an interior portion between said end portion and said sidewall portion; and wherein said flapper mounting portion is positioned within said valve receiving channel.
Claim 40
Dependent Claim
34 words
A medical device according to claim 31 wherein said cap body comprises an elastomeric material, and said flapper valve comprises a flexible plastic material more rigid than the elastomeric material of said cap body.
Claim 41
Dependent Claim
43 words
A medical device according to claim 31 wherein said cap body comprises a sidewall portion extending from said end portion; wherein said sidewall portion of said cap body has a generally cylindrical shape; and wherein said flapper mounting portion has a ring shape.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-10-12 | 2002-04-13 | 2002-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-10-12 | 2006-04-13 | 2006-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-10-12 | 2010-04-13 | 2010-10-13 | $7700.00 | Window Closed / Lapsed |