US4827931A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surgical catheters with suturing device and NMR opaque material
Assignee: Individual
•
Filing: 1987-01-13
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Granted: 1989-05-09
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Expires: 2007-01-13
Abstract
Abstract A surgical catheter for use on a patient undergoing NMR examination is composed of an elongated element made up of axial segments which are composed of materials which alternate from being highly opaque under NMR examination and less opaque under NMR examination, thereby enabling identification of the entire length of the catheter in the NMR field.
Inventors
- 👤 Donald B. Longmore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:10
CPC Classifications
G; G01; G01R; G01R33/00; G01R33/20; G01R33/28; G01R33/285; A; A61; A61B; A61B17/00; A61B17/04; A61B17/0469; A61M; A61M25/00; A61M25/01; A61M25/0105; A61M25/0108; A61M25/0127; A61B18/00; A61B18/18; A61B18/20; A61B18/22; A61B18/24; A61B2017/00831; A61B2017/00902; A61B2017/00911; A61B17/06; A61B17/06166; A61B2017/06171; A61B90/00; A61B90/39; A61B2090/3954
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
106 words
A surgical catheter for use on an patient undergoing nuclear magnetic resonance (NMR) examination, said surgical catheter comprising an elongated element having a distal end and a proximal end; a suturing device located at said distal end of said elongated element, said suturing device comprising a generally cup-shaped housing attached to said distal end, said housing having two openings therein, and two grippers which respectively extend through said two holes in said housing, said gripper including two jaws; and a pair of control elements which extend through said elongated element and are respectively connected to said jaws of each gripper to be alternately opened and closed.
Claim 2
Dependent Claim
106 words
A surgical catheter for use on an patient undergoing nuclear magnetic resonance (NMR) examination, said surgical catheter comprising an elongated element having a distal end and a proximal end; a suturing device located at said distal end of said elongated element, said suturing device comprising a generally cup-shaped housing attached to said distal end, said housing having two openings therein, and two grippers which respectively extend through said two holes in said housing, said gripper including two jaws; and a pair of control elements which extend through said elongated element and are respectively connected to said jaws of each gripper to be alternately opened and closed.
Claim 3
Dependent Claim
47 words
A surgical catheter according to claim 1, wherein said element is formed of a plurality of axial segments between said distal end and said proximal end which are composed of materials which material alternate from being highly opaque under NMR examination and less opaque under NMR examination.
Claim 4
Dependent Claim
49 words
A surgical catheter according to claim 2, wherein said elongated element provides a primary lumen which extends along the length thereof and is centrally located therewithin and a plurality of additional lumens which extend along the length thereof and are radially outwardly located with respect to said primary lumen.
Claim 5
Dependent Claim
42 words
A surgical catheter according to claim 3, wherein said additional lumens are circumferentially spaced around said elongated element and wherein guidance wires are located within said additional lumens to connect said the distal end of said elongated element to facilitate guidance thereof.
Claim 6
Dependent Claim
42 words
A surgical catheter according to claim 3, including inflatable sacs located around an exterior of said elongated element near said distal end and wherein said additional lumens communicate with said inflatable sacs so as to enable pressurized fluid to be supplied thereto.
Claim 7
Dependent Claim
32 words
A surgical catheter according to claim 3, including a bundle of optical fibers for the transmission of laser light extending through said primary lumen to the distal end of said elongated element.
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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) | 1992-05-08 | 1992-11-07 | 1993-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-08 | 1996-11-07 | 1997-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-08 | 2000-11-07 | 2001-05-09 | $7700.00 | Window Closed / Lapsed |