US3221744A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surgical knife
Assignee: Stryker Corp
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Filing: 1963-03-11
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Granted: 1965-12-07
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Expires: 1983-03-11
Abstract
No abstract record available.
Inventors
- 👤 Homer H Stryker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:47
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/32; A61B17/3209; A61B17/3211; A61B17/3213
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
187 words
A CUTTING INSTRUMENT, COMPRISING: AN ELONGATED, SUBSTANTIALLY RIGID MEMBER HAVING CURVED PORTION NEAR THE FRONT END THEREOF; A PAIR OF SPACED, RIGID PROBES EXTENDING FROM SAID FRONT END OF SAID MEMBER, SAID PROBES BEING SUBSTANTIALLY PARALLEL WITH THE ADJACENT PART OF SAID PORTION AND DEFINING A FRONTWARDLY OPENING NOTCH; WALL MEANS DEFINING A SHALLOW RECESS IN ONE SIDE OF SAID PORTION ADJACENT SAID NOTCH, SAID RECESS BEING SLIGHTLY WIDER ADJACENT SAID PROBES THAN THE DISTANCE BETWEEN SAID PROBES, SAID PORTION HAVING AN OPENING COMMUNICATING BETWEEN SAID RECESS AND THE REVERSE SIDE OF SAID MEMBER, SAID OPENING BEING SPACED FROM THE PROBES; PROJECTING MEANS EXTENDING OVER SID RECESS BETWEEN SAID OPENING AND SAID PROBES; AND A THIN BLADE SHARPEND ALONG THE FRONT EDGE THEREOF AND REMOVABLY DISPOSED IN SAID RECESS BETWEEN SAID PROJECTION MEANS AND SAID WALL MEANS, SAID BLADE BEING SNUGLY HELD WITHIN SAID RECESS COMPLETELY BETWEEN SAID ONE SIDE AND SAID REVERSIDE SIDE BY SAID PROJECTION MEANS AND THE REARWARD EDGE OF SAID BLADE ABUTTING SAID WALL MEANS WHEN SAID CUTTING EDGE EXTENDS BETWEEN SAID PROBES, SAID BLADE HAVING ENGAGEMENT MEANS THEREON ACCESSIBLE THROUGH SAID OPENING.
Claim 2
Dependent Claim
187 words
A CUTTING INSTRUMENT, COMPRISING: AN ELONGATED, SUBSTANTIALLY RIGID MEMBER HAVING CURVED PORTION NEAR THE FRONT END THEREOF; A PAIR OF SPACED, RIGID PROBES EXTENDING FROM SAID FRONT END OF SAID MEMBER, SAID PROBES BEING SUBSTANTIALLY PARALLEL WITH THE ADJACENT PART OF SAID PORTION AND DEFINING A FRONTWARDLY OPENING NOTCH; WALL MEANS DEFINING A SHALLOW RECESS IN ONE SIDE OF SAID PORTION ADJACENT SAID NOTCH, SAID RECESS BEING SLIGHTLY WIDER ADJACENT SAID PROBES THAN THE DISTANCE BETWEEN SAID PROBES, SAID PORTION HAVING AN OPENING COMMUNICATING BETWEEN SAID RECESS AND THE REVERSE SIDE OF SAID MEMBER, SAID OPENING BEING SPACED FROM THE PROBES; PROJECTING MEANS EXTENDING OVER SID RECESS BETWEEN SAID OPENING AND SAID PROBES; AND A THIN BLADE SHARPEND ALONG THE FRONT EDGE THEREOF AND REMOVABLY DISPOSED IN SAID RECESS BETWEEN SAID PROJECTION MEANS AND SAID WALL MEANS, SAID BLADE BEING SNUGLY HELD WITHIN SAID RECESS COMPLETELY BETWEEN SAID ONE SIDE AND SAID REVERSIDE SIDE BY SAID PROJECTION MEANS AND THE REARWARD EDGE OF SAID BLADE ABUTTING SAID WALL MEANS WHEN SAID CUTTING EDGE EXTENDS BETWEEN SAID PROBES, SAID BLADE HAVING ENGAGEMENT MEANS THEREON ACCESSIBLE THROUGH SAID OPENING.
References Cited (Backward Citations)
US1174932A
Cited
US1915244A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-06 | 1969-06-07 | 1969-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-06 | 1973-06-07 | 1973-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-06 | 1977-06-07 | 1977-12-07 | $7700.00 | Window Closed / Lapsed |