US4074431A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surgical knife assembly, surgical blade, and method of manufacture thereof
Assignee: Beaver Visitec International Inc
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Filing: 1976-04-21
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Granted: 1978-02-21
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Expires: 1996-04-21
Abstract
Abstract A disposable surgical knife assembly, a blade for use therein, and a method of manufacture thereof. The blade is manufactured in continuous strip form and may be separated from the strip along score lines in predetermined positions so as to provide the blade with a shape that facilitates accurate and automatic assembly into a holder. The holder is provided with a slot in the forward end to receive the rear portion of the blade, which may be retained in the slot by adhesives or by fusion of the holder material into suitable apertures in the blade. A portion of the blade projects laterally therefrom to facilitate adjustment of the blade position in the holder, said portion being readily broken off after completion of assembly.
Inventors
- 👤 John R. Beaver
- 👤 George J. Kozlowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:26
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/32; A61B17/3209; A61B17/3211; A61B17/3215
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
94 words
An elongated strip of metal formed into a guide portion and a series of blades extending from an edge of the guide portion at spaced intervals, said blades each having an outer edge extending parallel to the axis of the guide portion and being connected to the guide portion by a weakened portion, said strip being formed of a metal suitably heat treated to provide sufficient brittleness to permit separation of the blade from the strip by bending the blade out of the plane of the strip to cause fracture at the weakened portion.
Claim 2
Dependent Claim
94 words
An elongated strip of metal formed into a guide portion and a series of blades extending from an edge of the guide portion at spaced intervals, said blades each having an outer edge extending parallel to the axis of the guide portion and being connected to the guide portion by a weakened portion, said strip being formed of a metal suitably heat treated to provide sufficient brittleness to permit separation of the blade from the strip by bending the blade out of the plane of the strip to cause fracture at the weakened portion.
Claim 3
Dependent Claim
19 words
A strip as set out in claim 1 in which the weakened portion is formed by an embossed line.
Claim 4
Dependent Claim
95 words
A strip of metal formed into a guide portion and a series of surgical blades extending from a side thereof at spaced intervals, the axis of which blade being inclined to the axis of the strip, one side edge of the blade being attached to the guide portion by a weakened portion, the forward portion of the other side edge being parallel to the axis of the strip and being sharpened to a cutting edge, the extreme forward end of the sharpened portion extending beyond the weakened portion and being unconnected to the guide portion.
Claim 5
Dependent Claim
95 words
A strip of metal formed into a guide portion and a series of surgical blades extending from a side thereof at spaced intervals, the axis of which blade being inclined to the axis of the strip, one side edge of the blade being attached to the guide portion by a weakened portion, the forward portion of the other side edge being parallel to the axis of the strip and being sharpened to a cutting edge, the extreme forward end of the sharpened portion extending beyond the weakened portion and being unconnected to the guide portion.
Claim 6
Dependent Claim
123 words
A strip of metal formed into a guide portion and a series of surgical blades extending from a side thereof at spaced intervals, said blades each comprising a blade portion having one side edge joined to the guide portion of the strip by a weakened portion, part of the other side edge being parallel to the axis of the strip and being sharpened to a cutting edge, and a tang extending from the rear of the blade portion to the guide portion of the strip and being joined thereto by a weakened portion whereby the blade may be readily separated from the strip by bending the blade out of the plane of the guide portion so that fracture occurs at the weakened portion.
Claim 7
Dependent Claim
123 words
A strip of metal formed into a guide portion and a series of surgical blades extending from a side thereof at spaced intervals, said blades each comprising a blade portion having one side edge joined to the guide portion of the strip by a weakened portion, part of the other side edge being parallel to the axis of the strip and being sharpened to a cutting edge, and a tang extending from the rear of the blade portion to the guide portion of the strip and being joined thereto by a weakened portion whereby the blade may be readily separated from the strip by bending the blade out of the plane of the guide portion so that fracture occurs at the weakened portion.
Claim 8
Dependent Claim
37 words
A strip as set out in claim 4 in which each of said blades is formed of material sufficiently brittle to allow the tang to be readily broken off after assembly of the blade into a holder.
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) | 1981-02-20 | 1981-08-22 | 1982-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-20 | 1985-08-22 | 1986-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-20 | 1989-08-22 | 1990-02-21 | $7700.00 | Window Closed / Lapsed |