US4253462A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stylet
Assignee: Medtronic Inc
•
Filing: 1979-08-09
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Granted: 1981-03-03
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Expires: 1999-08-09
Abstract
Abstract Stylet including a stylet knob, a stylet wire, and a swaged stylet wire retaining sleeve over the stylet wire which engages within the stylet knob providing for controlled length and straightness of the stylet wire and mating within the long thin walled stylet knob.
Inventors
- 👤 Robert G. Dutcher
- 👤 Edward G. O'Neill
- 👤 Richard D. Sandstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:36
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/34
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
105 words
A stylet comprising: a knob having a proximal end and a distal end and having a longitudinal hole from said proximal end to said distal end wherein said longitudinal hole has a first diameter at said proximal end and a second diameter at said distal end; a stylet wire having a proximal end and a distal end and having said proximal end of said stylet wire inserted into said distal end of said longitudinal hole of said knob; and a stylet retaining sleeve larger than said second diameter frictionally engaged within said longitudinal hole and frictionally attached to said proximal end of said stylet wire.
Claim 2
Dependent Claim
105 words
A stylet comprising: a knob having a proximal end and a distal end and having a longitudinal hole from said proximal end to said distal end wherein said longitudinal hole has a first diameter at said proximal end and a second diameter at said distal end; a stylet wire having a proximal end and a distal end and having said proximal end of said stylet wire inserted into said distal end of said longitudinal hole of said knob; and a stylet retaining sleeve larger than said second diameter frictionally engaged within said longitudinal hole and frictionally attached to said proximal end of said stylet wire.
Claim 3
Dependent Claim
16 words
A stylet according to claim 1 wherein said first diameter is larger than said second diameter.
Claim 4
Dependent Claim
25 words
A stylet according to claim 1 or 2 wherein said stylet retaining sleeve frictionally engages said proximal end of said stylet wire by being swaged.
Claim 5
Dependent Claim
15 words
A stylet according to claim 3 wherein said stylet wire has a substantially uniform diameter.
References Cited (Backward Citations)
US3416533A
Cited
US3572333A
Cited
US4114626A
Cited
US4046151A
Cited
US4142531A
Cited
US4103690A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-03-02 | 1984-09-01 | 1985-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-02 | 1988-09-01 | 1989-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-02 | 1992-09-01 | 1993-03-03 | $7700.00 | Window Closed / Lapsed |