US5865807A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seal for trocar
Assignee: Individual
•
Filing: 1997-07-23
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Granted: 1999-02-02
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Expires: 2017-07-23
Abstract
Abstract A sealing arrangement for trocar tubes including an upper ring seal forming the primary seal, and a lower seal valve forming the secondary seal. Both seals form part of a valve system which can be positioned within a removable cartridge. The seal valve is elastomeric in tubular form for passing instruments and is provided with upper and lower flanges for placement within the trocar. The intermediate portion of the valve between the flanges is in the general form of converging and diverging frusto-conical sections which join along a sealing line. A seal is formed between the interior wall surfaces of the valve and the instrument present in the trocar tube. Peritoneal pressure is admitted to the trocar head or housing for pressing the valve in forming the desired seal. With the instrument removed, the valve walls engage each other along the seal line to form the desired seal. The valve walls are layered with hydrogel and a microencapsulated liquid coating substantially extending the shelf-life of the valve, providing lubricity for the valve surface, and improving the sealing characteristic of the base elastomer of the valve body.
Inventors
- 👤 Joseph W. Blake, III
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:03
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/34; A61B17/3498; A61B17/3462; A61B17/3474; A61B2017/0046; A61B2017/00477; A61B2017/3464
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
105 words
A seal for instruments in the central passage of a trocar, the seal comprising upper and lower peripheral rims joined by in air tight tube, the tube portion of the seal between the rims being in the general form of upper converging and lower diverging planar wall sections which meet along a diametric sealing line defined by touching interior surfaces of the planar wall sections, the lower planar walls comprising return planar walls which protect the integrity of the diametric sealing line by resisting the tendency of instruments to disturb the seal line by inverting the upper planar walls when instruments pass through the seal.
Claim 2
Dependent Claim
105 words
A seal for instruments in the central passage of a trocar, the seal comprising upper and lower peripheral rims joined by in air tight tube, the tube portion of the seal between the rims being in the general form of upper converging and lower diverging planar wall sections which meet along a diametric sealing line defined by touching interior surfaces of the planar wall sections, the lower planar walls comprising return planar walls which protect the integrity of the diametric sealing line by resisting the tendency of instruments to disturb the seal line by inverting the upper planar walls when instruments pass through the seal.
Claim 3
Dependent Claim
155 words
A seal for instruments in the central passage of a trocar, the seal comprising upper and lower peripheral rims joined by a generally cylindrical air tight tube, the tube portion of the seal between the rims being in the general form of upper converging and lower diverging planar wall sections which meet along a diametric sealing line defined by touching interior surfaces of the planar wall sections the lower planar walls comprising return panels which protect the integrity of the seal line by resisting the tendency of instruments to disturb the seal line by inverting the upper planar walls when passing through the seal valve, and a protective insert having a peripheral rim and a depending truncated skirt placed within the seal with its skirt protecting the sidewalls of the seal against puncture, and acting as a guide for directing instruments with tips to pass axially through the trocar and seal without puncturing the seal.
Claim 4
Dependent Claim
155 words
A seal for instruments in the central passage of a trocar, the seal comprising upper and lower peripheral rims joined by a generally cylindrical air tight tube, the tube portion of the seal between the rims being in the general form of upper converging and lower diverging planar wall sections which meet along a diametric sealing line defined by touching interior surfaces of the planar wall sections the lower planar walls comprising return panels which protect the integrity of the seal line by resisting the tendency of instruments to disturb the seal line by inverting the upper planar walls when passing through the seal valve, and a protective insert having a peripheral rim and a depending truncated skirt placed within the seal with its skirt protecting the sidewalls of the seal against puncture, and acting as a guide for directing instruments with tips to pass axially through the trocar and seal without puncturing the seal.
Claim 5
Dependent Claim
98 words
A sealing valve for a trocar comprising upper and lower peripheral rims joined by a generally cylindrical air tight tube, the tube portion of the valve between the rims being in the general form of upper converging and lower diverging planar wall sections which meet along a diametric sealing line defined by touching interior surfaces of the planar wall sections, the lower planar walls comprising return panels which protect the integrity of the seal line by resisting the tendency of instruments to disturb the seal line by inverting the upper planar walls when passing through the seal valve.
Claim 6
Dependent Claim
98 words
A sealing valve for a trocar comprising upper and lower peripheral rims joined by a generally cylindrical air tight tube, the tube portion of the valve between the rims being in the general form of upper converging and lower diverging planar wall sections which meet along a diametric sealing line defined by touching interior surfaces of the planar wall sections, the lower planar walls comprising return panels which protect the integrity of the seal line by resisting the tendency of instruments to disturb the seal line by inverting the upper planar walls when passing through the seal valve.
Claim 7
Dependent Claim
150 words
A seal for a trocar housing having a first opening and a central passage, the seal comprising a one-piece molding defining a primary seal and a secondary seal positioned in the housing encompassing the central passage, the primary seal positioned in the housing around the first opening, the secondary seal being attached to and depending from the primary seal and defined by a generally cylindrical air tight tube terminating in a lower peripheral rim, the tube portion of the secondary seal being in the general form of upper converging and lower diverging planar wall sections which meet along a diametric sealing line defined by touching interior surfaces of the planar wall sections the lower planar walls comprising return planar walls which protect the integrity of the seal line by resisting the tendency of instruments to disturb the seal line by inverting the upper planar walls when passing through the seal.
Claim 8
Dependent Claim
150 words
A seal for a trocar housing having a first opening and a central passage, the seal comprising a one-piece molding defining a primary seal and a secondary seal positioned in the housing encompassing the central passage, the primary seal positioned in the housing around the first opening, the secondary seal being attached to and depending from the primary seal and defined by a generally cylindrical air tight tube terminating in a lower peripheral rim, the tube portion of the secondary seal being in the general form of upper converging and lower diverging planar wall sections which meet along a diametric sealing line defined by touching interior surfaces of the planar wall sections the lower planar walls comprising return planar walls which protect the integrity of the seal line by resisting the tendency of instruments to disturb the seal line by inverting the upper planar walls when passing through the seal.
Claim 9
Dependent Claim
143 words
A seal arrangement for instruments in the central passage of a trocar, the seal arrangement comprising: a primary seal including a peripheral rim, and a radially extending annular sealing web having a central aperture of a diameter less than that of instruments passing the trocar central passage, and a secondary seal having upper and lower peripheral rims joined by an air tight tube, the tube portion of the seal between the rims being in the general form of upper converging and lower diverging planar wall sections which meet along a diametric sealing line defined by touching interior surfaces of the planar wall sections, the lower planar walls comprising return planar walls which protect the integrity of the diametric sealing line by resisting the tendency of instruments to disturb the seal line by inverting the upper planar walls when instruments pass through the seal.
Claim 10
Dependent Claim
143 words
A seal arrangement for instruments in the central passage of a trocar, the seal arrangement comprising: a primary seal including a peripheral rim, and a radially extending annular sealing web having a central aperture of a diameter less than that of instruments passing the trocar central passage, and a secondary seal having upper and lower peripheral rims joined by an air tight tube, the tube portion of the seal between the rims being in the general form of upper converging and lower diverging planar wall sections which meet along a diametric sealing line defined by touching interior surfaces of the planar wall sections, the lower planar walls comprising return planar walls which protect the integrity of the diametric sealing line by resisting the tendency of instruments to disturb the seal line by inverting the upper planar walls when instruments pass through the seal.
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) | 2002-02-01 | 2002-08-03 | 2003-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-02-01 | 2006-08-03 | 2007-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-02-01 | 2010-08-03 | 2011-02-02 | $7700.00 | Window Closed / Lapsed |