US5941858A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Medical device for insertion into the body
Assignee: Smiths Medical ASD Inc
•
Filing: 1997-09-17
•
Granted: 1999-08-24
•
Expires: 2017-09-17
Abstract
Abstract A catheter apparatus for use in determining the location of a tip of a catheter inside biological tissue is disclosed. The apparatus includes a catheter, a detector positioned within the catheter, and a polyimide sheath containing the detector and forming a detector assembly. The sheath is comprised of a first member, a polyimide layer, and a second member having an undulating outer surface sandwiched therebetween. The detector assembly may be removed from the catheter without damage thereto once the tip of the catheter is in its desired location inside biological tissue.
Inventors
- 👤 Theodore A. Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:27
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/06; A61M; A61M25/00; A61M25/01; A61M25/0105; A61M25/0108; A61B17/00; A61B2017/00017; A61B2017/00022; A61B2017/00039
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
66 words
A medical device for insertion into the body comprising: a polyimide first member having a tube shape with an internal passageway and an open end; an elongated strengthening member surrounding the polyimide first member; a polyimide coating surrounding the elongated strengthening member and the polyimide first member; and a tip positioned in the open end of the polyimide first member to close off the open end.
Claim 2
Dependent Claim
66 words
A medical device for insertion into the body comprising: a polyimide first member having a tube shape with an internal passageway and an open end; an elongated strengthening member surrounding the polyimide first member; a polyimide coating surrounding the elongated strengthening member and the polyimide first member; and a tip positioned in the open end of the polyimide first member to close off the open end.
Claim 3
Dependent Claim
43 words
The medical device of claim 1, wherein the polyimide first member, the elongated strengthening member, the polyimide coating and the tip form a unitary device, and further comprising a catheter defining a lumen, the unitary device positioned within the lumen of the catheter.
Claim 4
Dependent Claim
11 words
The medical device of claim 2, wherein the catheter comprises silicone.
Claim 5
Dependent Claim
15 words
The medical device of claim 1, wherein the tip includes a U.V. cure acrylic material.
Claim 6
Dependent Claim
24 words
The medical device of claim 1, further comprising a detector positioned in the internal passageway of the polyimide first member adjacent to the tip.
Claim 7
Dependent Claim
22 words
The medical device of claim 1, wherein the elongated strengthening member includes a metallic wire braid wrapped around the polyimide first member.
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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) | 2002-08-23 | 2003-02-22 | 2003-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-08-23 | 2007-02-22 | 2007-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-08-23 | 2011-02-22 | 2011-08-24 | $7700.00 | Window Closed / Lapsed |