US5871474A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Screw-type skin seal with inflatable membrane
Assignee: Mallinckrodt Enterprises Holdings Inc
•
Filing: 1997-04-02
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Granted: 1999-02-16
•
Expires: 2017-04-02
Abstract
Abstract A skin seal or trocar stabilizer with an inflatable membrane disposed inside, whereby medical instruments may be passed through the skin seal into a endoscopic work space while the inflatable membrane is inflated, thereby allowing the use of normal short conventional open surgery instruments during endoscopic procedures and during insufflation.
Inventors
- 👤 George D. Hermann
- 👤 Christopher Eric Thayer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:36
CPC Classifications
A; A61; A61M; A61M39/00; A61M39/02; A61M39/06; A61M39/0613; A61B; A61B17/00; A61B17/34; A61B17/3417; A61B17/3421; A61B17/3423; A61B17/3462; A61B17/3431; A61B2017/00535; A61B2017/00544; A61B2017/3464; A61B2017/3466; A61B2017/348; A61B2017/3482; A61B2017/349; A61M2039/0673
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
103 words
A skin seal having an inflatable membrane inside, said skin seal comprising: a cannula having a proximal end and a distal end, said proximal end having a larger outer diameter than said distal end, said cannula having an outer surface and inner bore; a fastening means on said outer surface of said cannula; and an inflatable membrane disposed within the inner bore of the cannula, said inflatable membrane having a proximal end and a distal end, said inflatable membrane sealed around its circumference to the inner bore of the cannula in at least two longitudinal positions along the inner bore of the cannula.
Claim 2
Dependent Claim
103 words
A skin seal having an inflatable membrane inside, said skin seal comprising: a cannula having a proximal end and a distal end, said proximal end having a larger outer diameter than said distal end, said cannula having an outer surface and inner bore; a fastening means on said outer surface of said cannula; and an inflatable membrane disposed within the inner bore of the cannula, said inflatable membrane having a proximal end and a distal end, said inflatable membrane sealed around its circumference to the inner bore of the cannula in at least two longitudinal positions along the inner bore of the cannula.
Claim 3
Dependent Claim
13 words
The skin seal of claim 1 wherein said fastening means comprises screw threads.
Claim 4
Dependent Claim
13 words
The skin seal of claim 1 wherein said fastening means comprises circumferential ribs.
Claim 5
Dependent Claim
17 words
The skin seal of claim 1 further comprising a flange on said proximal end of said cannula.
Claim 6
Dependent Claim
25 words
The skin seal of claim 1 further comprising an inflation passageway in a wall of said cannula, said inflation passageway communicating with said inflatable membrane.
Claim 7
Dependent Claim
20 words
The skin seal of claim 1 wherein said fastening means comprises longitudinal grooves in said outer surface of said cannula.
Claim 8
Dependent Claim
23 words
The skin seal of claim 1 wherein said fastening means comprises a plurality of protrusions extending from said outer surface of said cannula.
Claim 9
Dependent Claim
68 words
A surgical access device comprising: a cannula having a large end, a small end, an outer surface, and an inner bore; screw threads on said outer surface of said flexible cannula; an inflatable membrane secured to said inner bore of said cannula to form an airtight chamber between said inner bore of said flexible cannula and said inflatable membrane; and an inflation port communicating with said airtight chamber.
Claim 10
Dependent Claim
68 words
A surgical access device comprising: a cannula having a large end, a small end, an outer surface, and an inner bore; screw threads on said outer surface of said flexible cannula; an inflatable membrane secured to said inner bore of said cannula to form an airtight chamber between said inner bore of said flexible cannula and said inflatable membrane; and an inflation port communicating with said airtight chamber.
Claim 11
Dependent Claim
21 words
The surgical access device of claim 8 wherein said inflatable membrane is disposed only within said large end of said cannula.
Claim 12
Dependent Claim
18 words
The surgical access device of claim 8 further comprising a flange on said large end of said cannula.
Claim 13
Dependent Claim
30 words
The surgical access device of claim 8 further comprising an inflation passageway in a wall of said cannula, said inflation passageway communicating with said airtight chamber and said inflation port.
Claim 14
Dependent Claim
118 words
A skin seal comprising: a tube having a proximal end, a distal end, an outer surface and an inner bore, said proximal end having a larger outer diameter than said distal end; a fastening means on said outer surface of said tube; an inflatable membrane having a proximal end and a distal end, secured to said inner bore of said flexible tube, said inflatable membrane being disposed within said tube with said proximal end of said inflatable membrane aligned with said proximal end of said tube and said distal end of said inflatable membrane aligned with said distal end of said tube, said inflatable membrane sealed to said tube; and an inflation port communicating with said inflatable membrane.
Claim 15
Dependent Claim
118 words
A skin seal comprising: a tube having a proximal end, a distal end, an outer surface and an inner bore, said proximal end having a larger outer diameter than said distal end; a fastening means on said outer surface of said tube; an inflatable membrane having a proximal end and a distal end, secured to said inner bore of said flexible tube, said inflatable membrane being disposed within said tube with said proximal end of said inflatable membrane aligned with said proximal end of said tube and said distal end of said inflatable membrane aligned with said distal end of said tube, said inflatable membrane sealed to said tube; and an inflation port communicating with said inflatable membrane.
Claim 16
Dependent Claim
13 words
The skin seal of claim 12 wherein said fastening means comprises screw threads.
Claim 17
Dependent Claim
17 words
The skin seal of claim 12 further comprising a flange on said proximal end of said tube.
Claim 18
Dependent Claim
29 words
The skin seal of claim 12 further comprising an inflation passageway in a wall of said tube, said inflation passageway communicating with said inflatable membrane and said inflation port.
Claim 19
Dependent Claim
13 words
The skin seal of claim 12 wherein said fastening means comprises circumferential ribs.
Claim 20
Dependent Claim
20 words
The skin seal of claim 12 wherein said fastening means comprises longitudinal grooves in said outer surface of said cannula.
Claim 21
Dependent Claim
23 words
The skin seal of claim 12 wherein said fastening means comprises a plurality of protrusions extending from said outer surface of said cannula.
Claim 22
Independent Claim
90 words
A device for sealing an opening through the skin into an insufflated space within the body, said device comprising: a cannula having proximal and distal ends, the diameter of said proximal end being larger than the diameter of said distal end; a fastening means on said outer surface of said cannula; and an inflatable membrane disposed within the cannula and sealed to the cannula, said inflatable membrane being sized and dimensioned to fill said flexible cannula when inflated and to leave an open lumen through said flexible cannula when deflated.
Claim 23
Independent Claim
90 words
A device for sealing an opening through the skin into an insufflated space within the body, said device comprising: a cannula having proximal and distal ends, the diameter of said proximal end being larger than the diameter of said distal end; a fastening means on said outer surface of said cannula; and an inflatable membrane disposed within the cannula and sealed to the cannula, said inflatable membrane being sized and dimensioned to fill said flexible cannula when inflated and to leave an open lumen through said flexible cannula when deflated.
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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) | 2002-02-15 | 2002-08-17 | 2003-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-02-15 | 2006-08-17 | 2007-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-02-15 | 2010-08-17 | 2011-02-16 | $7700.00 | Window Closed / Lapsed |