Patent US2301509A successfully refreshed from Google Patents.
US5338292A
Expired / Lapsed
US
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Disposable lavage with instrument shield
Assignee: Mectra Labs Inc
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Filing: 1992-12-07
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Granted: 1994-08-16
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Expires: 2012-12-07
Abstract
Abstract A surgical device has a first cannula formed to define a first interior channel and a second cannula positioned substantially within the first interior channel of the first cannula. The second cannula is formed to define a second interior cannula. Both the first cannula and the second cannula are attached to a conduit piece that defines a first passageway in fluid communication with the first interior channel of the first cannula and a second passageway in fluid communication with the second interior channel of the second cannula. A third passageway defined by the conduit piece is in fluid communication with the first interior channel of the first cannula. The second passageway is covered by a breachable seal that permits insertion of instruments therethrough while limiting undesired fluid flow. A knife blade can be attached to said first cannula and said second cannula can be positioned around the knife blade to shield the knife blade.
Inventors
- 👤 Thomas P. Clement
- 👤 David P. Weber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:00
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/32; A61B17/320016; A61B10/00; A61B10/02; A61B10/04; A61B17/3203; A61B18/00; A61B18/04; A61B18/12; A61B18/14; A61B18/1482; A61M; A61M1/00; A61M1/71; A61M1/77; A61M1/774; A61M39/00; A61M39/22; A61M39/223; A61B10/0233; A61B10/0266; A61B10/0275; A61B10/0283; A61B17/28; A61B17/29; A61B18/18; A61B18/20; A61B18/22; A61B18/24; A61B18/26; A61B2017/0023; A61B2017/0046; A61B17/22; A61B2017/22072; A61B90/00; A61B90/30; A61B2090/306; A61B90/04; A61M1/74; A61M1/741; A61M1/7411; A61M1/772
Claims Analysis
Total Claims: 40
Claim 1
Independent Claim
80 words
A surgical device comprising a first cannula formed to define a first interior channel, wherein said first cannula has first and second ends, a surgical knife positioned to protrude from the first end of the first cannula, means for shielding the surgical knife, and means for extending the shielding means from the first interior channel of the first cannula to shield the surgical knife and for retracting the shielding means into the first interior channel to expose the surgical knife.
Claim 2
Dependent Claim
80 words
A surgical device comprising a first cannula formed to define a first interior channel, wherein said first cannula has first and second ends, a surgical knife positioned to protrude from the first end of the first cannula, means for shielding the surgical knife, and means for extending the shielding means from the first interior channel of the first cannula to shield the surgical knife and for retracting the shielding means into the first interior channel to expose the surgical knife.
Claim 3
Dependent Claim
63 words
The surgical device of claim 1, wherein the shielding means includes a second cannula positioned to move between a first position wherein the second cannula protrudes from the first end of the first cannula to shield the surgical knife and a second position wherein the second cannula lies substantially within the first interior channel of the first cannula to expose the surgical knife.
Claim 4
Dependent Claim
16 words
The surgical device of claim 2, wherein the surgical knife is mounted on the first cannula.
Claim 5
Dependent Claim
23 words
The surgical device of claim 1, wherein the extending and retracting means includes means for locking the shielding means in a predetermined position.
Claim 6
Dependent Claim
49 words
The surgical device of claim 4, wherein the locking means includes a first lock positioned to move between a first locking position that holds the shielding means in a predetermined position and a first lock release position that permits movement of the shielding means away from the predetermined position.
Claim 7
Dependent Claim
17 words
The surgical device of claim 4, wherein the surgical instrument is fixedly attached to the first cannula.
Claim 8
Dependent Claim
17 words
The surgical device of claim 5, wherein the surgical knife is fixedly attached to the first cannula.
Claim 9
Dependent Claim
188 words
A surgical device comprising a first cannula formed to define a first interior channel, wherein said first cannula has first and second ends, an instrument positioned to protrude from the first end of the first cannula means for shielding the instrument, means for extending the shielding means from the first interior channel of the first cannula, and for retracting the shielding means into the first interior channel to expose the instrument, wherein the extending and retracting means includes means for locking the shielding means in a predetermined position, wherein the locking means includes a first lock positioned to move between a first locking position that holds the shielding means in a predetermined position and a first lock release position that permits movement of the shielding means away from the predetermined position, and wherein the locking means includes a second lock positioned to move between a second lock locking position that prevents movement of the first lock from said first lock locking position to the first lock release position and a second lock release position that permits the first lock to be moved into the first lock release position.
Claim 10
Dependent Claim
188 words
A surgical device comprising a first cannula formed to define a first interior channel, wherein said first cannula has first and second ends, an instrument positioned to protrude from the first end of the first cannula means for shielding the instrument, means for extending the shielding means from the first interior channel of the first cannula, and for retracting the shielding means into the first interior channel to expose the instrument, wherein the extending and retracting means includes means for locking the shielding means in a predetermined position, wherein the locking means includes a first lock positioned to move between a first locking position that holds the shielding means in a predetermined position and a first lock release position that permits movement of the shielding means away from the predetermined position, and wherein the locking means includes a second lock positioned to move between a second lock locking position that prevents movement of the first lock from said first lock locking position to the first lock release position and a second lock release position that permits the first lock to be moved into the first lock release position.
Claim 11
Dependent Claim
27 words
The surgical device of claim 8, wherein the second lock is provided with coded indicia to indicate the position of the shielding means relative to the instrument.
Claim 12
Dependent Claim
17 words
The surgical device of claim 9, wherein the surgical instrument is fixedly attached to the first cannula.
Claim 13
Dependent Claim
17 words
The surgical device of claim 8, wherein the surgical instrument is fixedly attached to the first cannula.
Claim 14
Dependent Claim
121 words
A disposable lavage capable of carrying a surgical instrument comprising a first cannula formed to define a first interior channel, wherein said first cannula has first and second ends, means for mounting the instrument so that the instrument is positioned to protrude from the first end of the first cannula, means for shielding the instrument, means for extending the shielding means to shield the instrument and for retracting the shielding means to expose the instrument, and a conduit piece defining a first passageway into which the first cannula is inserted, a second passageway in fluid communication with the first interior channel of the first cannula, and a third passageway in fluid communication with the first interior channel of the first cannula.
Claim 15
Dependent Claim
121 words
A disposable lavage capable of carrying a surgical instrument comprising a first cannula formed to define a first interior channel, wherein said first cannula has first and second ends, means for mounting the instrument so that the instrument is positioned to protrude from the first end of the first cannula, means for shielding the instrument, means for extending the shielding means to shield the instrument and for retracting the shielding means to expose the instrument, and a conduit piece defining a first passageway into which the first cannula is inserted, a second passageway in fluid communication with the first interior channel of the first cannula, and a third passageway in fluid communication with the first interior channel of the first cannula.
Claim 16
Dependent Claim
73 words
The disposable lavage of claim 12, wherein the shielding means includes a second cannula formed to define a second interior channel, wherein said second cannula is positioned to move between a first position wherein the second cannula protrudes form the first end of the first cannula to shield the instrument and a second position wherein the second cannula lies substantially within the first interior channel of the first cannula to expose the instrument.
Claim 17
Dependent Claim
15 words
The disposable lavage of claim 13 wherein the instrument is mounted on the first cannula.
Claim 18
Dependent Claim
12 words
The apparatus of claim 14 wherein the instrument is a surgical knife.
Claim 19
Dependent Claim
23 words
The disposable lavage of claim 12, wherein the extending and retracting means includes means for locking the shielding means in a predetermined position.
Claim 20
Dependent Claim
17 words
The disposable lavage of claim 16, wherein the surgical instrument is fixedly attached to the first cannula.
Claim 21
Dependent Claim
17 words
The disposable lavage of claim 12, wherein the surgical instrument is fixedly attached to the first cannula.
Claim 22
Dependent Claim
23 words
The disposable lavage of claim 12, wherein when the shielding means is retracted, it is retracted into the interior of the first channel.
Claim 23
Dependent Claim
138 words
An aspirating and suction disposable lavage capable of carrying a surgical instrument comprising a first cannula formed to define a first interior channel, wherein said first cannula has first and second ends, means for mounting the instrument so that the instrument is positioned to protrude from the first end of the first cannula, means for shielding the instrument, means for extending the shielding means to shield the instrument, and for retracting the shielding means to expose the instrument, a conduit piece defining a first passageway attached in fluid communication with the first interior channel of the first cannula for connecting the said first interior channel to an aspiration source and a suction source, and valve means for controlling fluid flow through the first passageway for the introduction of and removal of fluid to and from the interior channel.
Claim 24
Dependent Claim
138 words
An aspirating and suction disposable lavage capable of carrying a surgical instrument comprising a first cannula formed to define a first interior channel, wherein said first cannula has first and second ends, means for mounting the instrument so that the instrument is positioned to protrude from the first end of the first cannula, means for shielding the instrument, means for extending the shielding means to shield the instrument, and for retracting the shielding means to expose the instrument, a conduit piece defining a first passageway attached in fluid communication with the first interior channel of the first cannula for connecting the said first interior channel to an aspiration source and a suction source, and valve means for controlling fluid flow through the first passageway for the introduction of and removal of fluid to and from the interior channel.
Claim 25
Dependent Claim
72 words
The lavage of claim 20, wherein the shielding means includes a second cannula formed to define a second interior channel, wherein said second cannula is positioned to move between a first position wherein the second cannula protrudes from the first end of the first cannula to shield the instrument and a second position wherein the second cannula lies substantially within the first interior channel of the first cannula to expose the instrument.
Claim 26
Dependent Claim
17 words
The disposable lavage of claim 21, wherein the surgical instrument is fixedly attached to the first cannula.
Claim 27
Dependent Claim
22 words
The lavage of claim 20, wherein the extending and retracting means includes means for locking the shielding means in a predetermined position.
Claim 28
Dependent Claim
19 words
The lavage of claim 20, wherein when the shielding means is retracted, it is retracted into the first channel.
Claim 29
Dependent Claim
17 words
The disposable lavage of claim 24, wherein the surgical instrument is fixedly attached to the first cannula.
Claim 30
Dependent Claim
44 words
The disposable lavage of claim 25, wherein the cannula is positioned in a patient by an operator by hand gripping a hand gripping surface on the conduit piece to move the conduit piece and cannula to accurately position the instrument in a patient's body.
Claim 31
Dependent Claim
23 words
The lavage of claim 25, wherein the valve means has a valve body and a hand gripping surface is on the valve body.
Claim 32
Dependent Claim
17 words
The disposable lavage of claim 20, wherein the surgical instrument is fixedly attached to the first cannula.
Claim 33
Dependent Claim
17 words
The disposable lavage of claim 20, wherein the valve means is rigidly attached to the conduit piece.
Claim 34
Dependent Claim
23 words
The lavage of claim 29, wherein the valve means has a valve body and the hand gripping surface is on the valve body.
Claim 35
Dependent Claim
28 words
The lavage of claim 30, wherein digits on the hand holding the conduit piece can operate the valve means as the instrument is being positioned in the patient.
Claim 36
Dependent Claim
28 words
The lavage of claim 29, wherein digits on the hand holding the conduit piece can operate the valve means as the instrument is being positioned in the patient.
Claim 37
Dependent Claim
44 words
The disposable lavage of claim 20, wherein the cannula is positioned in a patient by an operator by hand gripping a hand gripping surface on the conduit piece to move the conduit piece and cannula to accurately position the instrument in a patient's body.
Claim 38
Dependent Claim
23 words
The lavage of claim 33, wherein the valve means has a valve body and the hand gripping surface is on the valve body.
Claim 39
Dependent Claim
28 words
The lavage of claim 33, wherein digits on the hand holding the conduit piece can operate the valve means as the instrument is being positioned in the patient.
Claim 40
Dependent Claim
23 words
The lavage of claim 20, wherein the valve means has a valve body and a hand gripping surface is on the valve body.
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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) | 1997-08-15 | 1998-02-14 | 1998-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-08-15 | 2002-02-14 | 2002-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-08-15 | 2006-02-14 | 2006-08-16 | $7700.00 | Window Closed / Lapsed |