Patent US2418127A successfully refreshed from Google Patents.
US4860757A
Expired / Lapsed
US
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Guidewire advancement system
Assignee: Arrow International Investment Corp
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Filing: 1987-10-28
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Granted: 1989-08-29
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Expires: 2007-10-28
Abstract
Abstract A guidewire advancement system for inserting catheter guidewires into blood vessels, and more particularly a guidewire dispensing system for the controlled sterile insertion of a coiled spring guidewire to avoid infection of the patient. The system provides for the transmission of an electrical signal by the guidewire to determine its location within the body.
Inventors
- 👤 Arthur S. Lynch
- 👤 A. Walter MacEachern
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:42
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/01; A61M25/09; A61M25/09041
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
99 words
A catheter guidewire advancement system comprising: a hollow casing for housing a catheter guidewire with a first outlet at one end and a second outlet; straightener means for straightening the guidewire such that the straightener is disposed to receive said guidewire as it is dispensed through the first outlet; and a first aperture for exposing a portion of the guidewire and a second aperture adjacent the second outlet such that a frictional force applied laterally to the guidewire through the first or second aperture will displace the guidewire relative to the casing and through the first or second outlet.
Claim 2
Dependent Claim
99 words
A catheter guidewire advancement system comprising: a hollow casing for housing a catheter guidewire with a first outlet at one end and a second outlet; straightener means for straightening the guidewire such that the straightener is disposed to receive said guidewire as it is dispensed through the first outlet; and a first aperture for exposing a portion of the guidewire and a second aperture adjacent the second outlet such that a frictional force applied laterally to the guidewire through the first or second aperture will displace the guidewire relative to the casing and through the first or second outlet.
Claim 3
Independent Claim
80 words
A method of using a catheter guidewire advancement system comprising the steps of: placing a cannula into a body lumen; manually engaging, without intervening mechanical means, a guidewire directly through an aperture in a guidewire advancement system comprising a guidewire casing; and inserting the guidewire into the body by manually applying a lateral frictional force to the guidewire through the aperture in the casing to displace the guidewire relative to the casing and through the cannula into the body lumen.
Claim 4
Independent Claim
80 words
A method of using a catheter guidewire advancement system comprising the steps of: placing a cannula into a body lumen; manually engaging, without intervening mechanical means, a guidewire directly through an aperture in a guidewire advancement system comprising a guidewire casing; and inserting the guidewire into the body by manually applying a lateral frictional force to the guidewire through the aperture in the casing to displace the guidewire relative to the casing and through the cannula into the body lumen.
Claim 5
Dependent Claim
31 words
A method of using a catheter guidewire advancement system as defined in claim 2 wherein the aperture is located in the casing adjacent an outlet through which the guidewire is displaced.
Claim 6
Dependent Claim
43 words
A method of using a catheter guidewire advancement system as defined in claim 2 wherein said manual engaging step is followed by the step of retracting the guidewire into a straightener by applying a lateral frictional force to the guidewire through the aperture.
References Cited (Backward Citations)
US3561445A
Cited
US4003369A
Cited
US4080706A
Cited
US3995628A
Cited
US4160451A
Cited
US4397091A
Cited
US4342313A
Cited
US4425908A
Cited
US4534363A
Cited
US4650472A
Cited
US4676249A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-08-28 | 1993-02-27 | 1993-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-08-28 | 1997-02-27 | 1997-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-08-28 | 2001-02-27 | 2001-08-29 | $7700.00 | Window Closed / Lapsed |