Patent US3906938A successfully refreshed from Google Patents.
US3906938A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coil spring wire guide
Assignee: Lake Region Manufacturing Inc
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Filing: 1974-09-03
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Granted: 1975-09-23
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Expires: 1994-09-03
Abstract
Abstract A coil spring guide, for use in connection with the insertion of catheters into the vessels of a body, that has a coil spring, and a wire core extending within the coil spring and having a distal end welded to the distal end of the coil spring. The wire core throughout the major portion of its length is cylindrical while the end portion adjacent where the core is welded to the distal end of the coil spring is flattened to in transverse cross section be of a substantially larger dimension in one direction than in a direction at right angles thereto, and as viewed from the edge thereof, along a major part of the length of the flattened portion is of an undulated shape.
Inventors
- 👤 John J Fleischhacker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:48
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/01; A61M25/09; A61M25/09016; A61M25/09033; A61M2025/09058; A61M2025/09083
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
82 words
A vascular coil spring guide comprising an elongated coil spring having a distal enD portion that has a distal end and an elongated wire core extending within the coil spring that has an elongated distal end portion within the coil spring distal end portion and a distal end, said wire core distal end portion having a plurality of undulations that are bent about axes that are generally perpendicular to the direction of elongation, said distal ends being fixedly secured to one another.
Claim 2
Dependent Claim
82 words
A vascular coil spring guide comprising an elongated coil spring having a distal enD portion that has a distal end and an elongated wire core extending within the coil spring that has an elongated distal end portion within the coil spring distal end portion and a distal end, said wire core distal end portion having a plurality of undulations that are bent about axes that are generally perpendicular to the direction of elongation, said distal ends being fixedly secured to one another.
Claim 3
Dependent Claim
28 words
The apparatus of claim 1 further characterized in that the wire core distal end portion includes an elongated flatten portion that is generally rectangular in transverse cross section.
Claim 4
Dependent Claim
18 words
The apparatus of claim 2 further characterized in that said flatten portion has the wire core distal end.
Claim 5
Dependent Claim
39 words
The apparatus of claim 2 further characterized in that said wire core has a cylindrical portion that has one end integrally joined to the flatten portion and an opposite end, said opposite end comprising the wire core distal end.
Claim 6
Dependent Claim
67 words
The apparatus of claim 2 further characterized in that said wire core has a generally cylindrical shaped, elongated portion that has a distal end integrally joined to the wire core distal end portion and that is of a larger transverse cross sectional area than the maximum transverse cross sectional area of wire core distal end portion at a location substantially spaced from said cylindrical shaped, elongated portion.
Claim 7
Dependent Claim
20 words
The apparatus of claim 2 further characterized in that the wire core is a continuous length of unitary formed metal.
Claim 8
Dependent Claim
37 words
The apparatus of claim 2 further characterized in that the transverse width of the flatten portion is many times greater than the transverse thickness thereof and said distal ends are secured by being welded to one another.
Claim 9
Dependent Claim
169 words
A vascular coil spring guide having an elongated metal coil spring that has a first portion, and a distal end portion that has a distal end and is joined to the coil first portion, and an elongated metal wire core within the coil spring that has an elongated first portion within the coil spring first portion, and a distal end portion within the coil spring distal end portion that has a distal end, the wire core distal end portion having a second portion that is joined to the wire core first portion and is of a reduced transverse cross sectional area in a direction away from the wire core first portion, and an elongated flatten portion joined to said second portion to extend away therefrom in a direction away from the wire core first portion, said flatten portion being bent about a plurality of axes generally parallel to the direction of elongation of the flatten portion to provide a plurality of undulations, and a weld joining the distal ends.
Claim 10
Dependent Claim
169 words
A vascular coil spring guide having an elongated metal coil spring that has a first portion, and a distal end portion that has a distal end and is joined to the coil first portion, and an elongated metal wire core within the coil spring that has an elongated first portion within the coil spring first portion, and a distal end portion within the coil spring distal end portion that has a distal end, the wire core distal end portion having a second portion that is joined to the wire core first portion and is of a reduced transverse cross sectional area in a direction away from the wire core first portion, and an elongated flatten portion joined to said second portion to extend away therefrom in a direction away from the wire core first portion, said flatten portion being bent about a plurality of axes generally parallel to the direction of elongation of the flatten portion to provide a plurality of undulations, and a weld joining the distal ends.
Claim 11
Dependent Claim
74 words
The apparatus of claim 8 further characterized in that said wire core is a continuous single unitary integral length of wire, and that the transverse width dimension of the flatten portion is many times greater than the thickness thereof, said axes being generally parallel to said transverse width dimension, and that the maximum cross sectional area of the flatten portion is less than the wire core first portion that is adjacent said second portion.
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) | 1978-09-22 | 1979-03-24 | 1979-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-22 | 1983-03-24 | 1983-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-22 | 1987-03-24 | 1987-09-23 | $7700.00 | Window Closed / Lapsed |