US4929235A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-sealing percutaneous tube introducer
Assignee: Merit Medical Systems Inc
•
Filing: 1985-07-31
•
Granted: 1990-05-29
•
Expires: 2005-07-31
Abstract
Abstract A self-sealing percutaneous tube (e.g. catheter) introducer having a sealing mechanism to prevent blood or fluid leakage that includes spaced sealing gaskets adapted to surround the tube, a distal sealing element being planar and having a slit whereas the proximal sealing element being conical and having an annular opening at its distal and small end, the introducer optionally including a side arm flushing member and/or a female luer lock connection at its proximal end.
Inventors
- 👤 Jack D. Merry
- 👤 E. David Fink
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:54
CPC Classifications
A; A61; A61M; A61M39/00; A61M39/02; A61M39/06; A61M39/0606; A61M2039/062; A61M2039/0633; A61M2039/064; A61M2039/0646; A61M2039/0686; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7879; Y10T137/788; Y10T137/7882; Y10T137/7885
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
118 words
A self-sealing percutaneous tube introducer comprising a body having a passage therethrough adapted to receive a catheter or similar medical device, a flexible hole gasket mounted transverse to and within said passage having a round hole centered therein, a flexible slit gasket mounted transverse to and within said passage having a slit which permits said catheter to pass through by deflecting or stretching portions of the gasket adjacent said slit, and an inflexible spacing ring mounted between said gaskets, said slit gasket being spaced distally from said hole gasket but close enough that said slit gaskets if moved proximally by said catheter may reach and rest upon the perimeter of said hole, but not interfere with catheter movement.
Claim 2
Dependent Claim
118 words
A self-sealing percutaneous tube introducer comprising a body having a passage therethrough adapted to receive a catheter or similar medical device, a flexible hole gasket mounted transverse to and within said passage having a round hole centered therein, a flexible slit gasket mounted transverse to and within said passage having a slit which permits said catheter to pass through by deflecting or stretching portions of the gasket adjacent said slit, and an inflexible spacing ring mounted between said gaskets, said slit gasket being spaced distally from said hole gasket but close enough that said slit gaskets if moved proximally by said catheter may reach and rest upon the perimeter of said hole, but not interfere with catheter movement.
Claim 3
Dependent Claim
10 words
The introducer of claim 1 wherein said slit is Y-shaped.
Claim 4
Dependent Claim
20 words
The introducer of claim 2 wherein said hole gasket is conical with the smaller end directed toward the slit gasket.
Claim 5
Dependent Claim
18 words
The introducer of claim 3 wherein said hole gasket is spaced from the proximal end of said introducer.
Claim 6
Dependent Claim
15 words
The introducer of claim 4 additionally comprising a side arm located distally to said gaskets.
Claim 7
Dependent Claim
14 words
The introducer of claim 4 additionally comprising a luer attachment at said proximal end.
Claim 8
Dependent Claim
15 words
The introducer of claim 4 additionally comprising a female luer attachment at said proximal end.
Claim 9
Dependent Claim
15 words
The introducer of claim 4 wherein said gaskets are formed from blood compatible flexible elastomers.
Claim 10
Dependent Claim
11 words
The introducer of claim 8 wherein said spacer ring is metal.
Claim 11
Dependent Claim
15 words
The introducer of claim 9 wherein said gaskets are formed from blood compatible silicone rubber.
Claim 12
Dependent Claim
17 words
The introducer of claim 10 wherein said gaskets have a Shore A durometer of 30 to 80.
Claim 13
Dependent Claim
28 words
The introducer of claim 11 wherein the Shore A durometer of said hole gasket is about 50 to 60 and said slit gasket is about 60 to 70.
Claim 14
Dependent Claim
12 words
The introducer of claim 8 wherein said spacer ring is hard plastic.
References Cited (Backward Citations)
US584091A
Cited
US2524764A
Cited
US3577992A
Cited
US4000739A
Cited
US4430081A
Cited
US4424833A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-05-28 | 1993-11-27 | 1994-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-05-28 | 1997-11-27 | 1998-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-05-28 | 2001-11-27 | 2002-05-29 | $7700.00 | Window Closed / Lapsed |