US5643301A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cannula assembly with squeeze operated valve
Assignee: Mallinckrodt Enterprises Holdings Inc
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Filing: 1995-06-07
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Granted: 1997-07-01
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Expires: 2015-06-07
Abstract
Abstract An improved valve for cannulas and endoscopic access ports used during insufflation. A duckbill valve is provided which can accommodate the passage of endoscopic instruments such as endoscope, graspers and scissors and form a seal around the shaft of these instruments, thereby maintaining insufflation pressure. The access port housing around the duckbill valve is squeezable, so that the duckbill valve may be squeezed open by squeezing the access port housing, thereby facilitating removal of endoscopic instruments without the need to manipulate a valve fitting.
Inventors
- 👤 Kenneth H. Mollenauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:57
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/34; A61B17/3498; A61B17/3474
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
103 words
A valve housing for a cannula assembly having a cannula with a distal end and a proximal end, the valve housing being disposed on the proximal end of the cannula, said valve housing containing a valve with a distal side and a proximal side, said valve providing a substantially airtight seal to maintain high pressure on the distal side of the valve, said valve capable of permitting passage of endoscopic instruments through the valve and into the cannula, said valve housing comprising compressible valve operating means for converting compressive force upon a portion of the valve housing to operating action on the valve.
Claim 2
Dependent Claim
103 words
A valve housing for a cannula assembly having a cannula with a distal end and a proximal end, the valve housing being disposed on the proximal end of the cannula, said valve housing containing a valve with a distal side and a proximal side, said valve providing a substantially airtight seal to maintain high pressure on the distal side of the valve, said valve capable of permitting passage of endoscopic instruments through the valve and into the cannula, said valve housing comprising compressible valve operating means for converting compressive force upon a portion of the valve housing to operating action on the valve.
Claim 3
Independent Claim
75 words
A method for inserting and withdrawing endoscopic instruments into the body through a cannula, said method comprising: providing an cannula with a valve adapted to receive the endoscopic instruments, said valve being disposed within a valve housing, said valve housing having compressible means for opening and closing the valve; compressing the compressible means to operate the valve while withdrawing an endoscopic instrument from the cannula, thereby avoiding obstruction of the endoscopic instrument by the valve.
Claim 4
Independent Claim
75 words
A method for inserting and withdrawing endoscopic instruments into the body through a cannula, said method comprising: providing an cannula with a valve adapted to receive the endoscopic instruments, said valve being disposed within a valve housing, said valve housing having compressible means for opening and closing the valve; compressing the compressible means to operate the valve while withdrawing an endoscopic instrument from the cannula, thereby avoiding obstruction of the endoscopic instrument by the valve.
Claim 5
Independent Claim
83 words
A method for inserting and withdrawing endoscopic instruments into the body through a cannula, said method comprising: providing an cannula with a valve adapted to receive the endoscopic instruments, said valve being disposed within a valve housing, said valve housing having a flexible portion which may be squeezed into contact with the valve to operate the valve; compressing the flexible portion to operate the valve while withdrawing an endoscopic instrument from the cannula, thereby avoiding obstruction of the endoscopic instrument by the valve.
Claim 6
Independent Claim
83 words
A method for inserting and withdrawing endoscopic instruments into the body through a cannula, said method comprising: providing an cannula with a valve adapted to receive the endoscopic instruments, said valve being disposed within a valve housing, said valve housing having a flexible portion which may be squeezed into contact with the valve to operate the valve; compressing the flexible portion to operate the valve while withdrawing an endoscopic instrument from the cannula, thereby avoiding obstruction of the endoscopic instrument by the valve.
Claim 7
Dependent Claim
65 words
A cannula assembly for receiving a surgical instrument comprising: a cannula; a valve housing on the proximal end of said cannula; a valve disposed within said valve housing; said valve housing having a movable wall portion; and said movable wall portion adapted to be moved into contact with said valve to open said valve to permit the surgical instrument to be withdrawn from the cannula.
Claim 8
Dependent Claim
65 words
A cannula assembly for receiving a surgical instrument comprising: a cannula; a valve housing on the proximal end of said cannula; a valve disposed within said valve housing; said valve housing having a movable wall portion; and said movable wall portion adapted to be moved into contact with said valve to open said valve to permit the surgical instrument to be withdrawn from the cannula.
Claim 9
Dependent Claim
14 words
The cannula assembly of claim 4 wherein said valve is a self sealing valve.
Claim 10
Dependent Claim
13 words
The cannula assembly of claim 4 wherein said valve is a duckbill valve.
Claim 11
Dependent Claim
13 words
The cannula assembly of claim 4 wherein said valve is a flapper valve.
Claim 12
Dependent Claim
65 words
A cannula assembly for receiving a surgical instrument comprising: a cannula; a valve housing on the proximal end of said cannula; a valve disposed within said valve housing; said valve housing having a flexible wall portion; and said flexible wall portion adapted to be moved into contact with said valve to open said valve to permit the surgical instrument to be withdrawn from the cannula.
Claim 13
Dependent Claim
65 words
A cannula assembly for receiving a surgical instrument comprising: a cannula; a valve housing on the proximal end of said cannula; a valve disposed within said valve housing; said valve housing having a flexible wall portion; and said flexible wall portion adapted to be moved into contact with said valve to open said valve to permit the surgical instrument to be withdrawn from the cannula.
Claim 14
Dependent Claim
14 words
The cannula assembly of claim 8 wherein said valve is a self sealing valve.
Claim 15
Dependent Claim
13 words
The cannula assembly of claim 8 wherein said valve is a duckbill valve.
Claim 16
Dependent Claim
13 words
The cannula assembly of claim 8 wherein said valve is a flapper valve.
Claim 17
Dependent Claim
61 words
A cannula assembly comprising: a cannula; a valve housing on the proximal end of said cannula; a valve disposed within said valve housing; and said valve housing having a squeeze port, said squeeze port covered by an elastic membrane, said elastic membrane being capable of being moved into said squeeze port and into contact with said valve to actuate said valve.
Claim 18
Dependent Claim
61 words
A cannula assembly comprising: a cannula; a valve housing on the proximal end of said cannula; a valve disposed within said valve housing; and said valve housing having a squeeze port, said squeeze port covered by an elastic membrane, said elastic membrane being capable of being moved into said squeeze port and into contact with said valve to actuate said valve.
Claim 19
Dependent Claim
96 words
A cannula assembly comprising: a cannula; a valve housing on the proximal end of said cannula; a valve disposed within said valve housing; said valve housing having a squeeze port, said squeeze port covered by an elastic membrane, said squeeze port being large enough to permit said elastic membrane to be moved into contact with said valve to actuate said valve; and a squeeze block operably connected to said elastic membrane so that squeezing force on said squeeze block moves said elastic membrane into said squeeze port and into contact with said valve actuating said valve.
Claim 20
Dependent Claim
96 words
A cannula assembly comprising: a cannula; a valve housing on the proximal end of said cannula; a valve disposed within said valve housing; said valve housing having a squeeze port, said squeeze port covered by an elastic membrane, said squeeze port being large enough to permit said elastic membrane to be moved into contact with said valve to actuate said valve; and a squeeze block operably connected to said elastic membrane so that squeezing force on said squeeze block moves said elastic membrane into said squeeze port and into contact with said valve actuating said valve.
Claim 21
Dependent Claim
72 words
A cannula assembly comprising: a cannula; a valve housing on the proximal end of said cannula; a valve disposed within said valve housing; and said valve housing having a squeeze port, said squeeze port covered by an elastic membrane, said elastic membrane comprising an elastic band surrounding said valve housing, said elastic membrane being capable of being moved into said squeeze port and into contact with said valve to actuate said valve.
Claim 22
Dependent Claim
72 words
A cannula assembly comprising: a cannula; a valve housing on the proximal end of said cannula; a valve disposed within said valve housing; and said valve housing having a squeeze port, said squeeze port covered by an elastic membrane, said elastic membrane comprising an elastic band surrounding said valve housing, said elastic membrane being capable of being moved into said squeeze port and into contact with said valve to actuate said valve.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-06-30 | 2000-12-30 | 2001-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-06-30 | 2004-12-30 | 2005-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-06-30 | 2008-12-30 | 2009-07-01 | $7700.00 | Window Closed / Lapsed |