Patent US3575038A successfully refreshed from Google Patents.
US3575038A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surgical instrument
Assignee: Individual
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Filing: 1968-10-17
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Granted: 1971-04-13
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Expires: 1988-10-17
Abstract
Abstract A pair of forceps for inserting a staple into the edges of an incision in a blood vessel, the forceps comprising two jaw portions, a head at the tip of one jaw, a cage surrounding the head and adapted to receive and support a staple on the head, resilient means enabling the cage to move reciprocally relative to the head and an anvil at the tip of the other jaw portion adapted to depress the cage relative to the said one jaw portion, as the jaws are closed, and set the staple.
Inventors
- 👤 Herbert Ernest Mallett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:53
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/10
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
229 words
A pair of forceps for setting a staple comprising two pivoted jaw portions, one jaw portion having a head at its free end adapted to support the web of the staple, a cage which surrounds the head and is adapted to support and guide the staple so that the ends of the staple project upwardly from the head and resilient means associated with the cage enabling the cage to move reciprocally relative to the head, the other jaw portion having a formed anvil at its free end, the anvil being adapted to depress the cage relative to the head and upset a staple located in the cage when the jaw portions are pivoted towards one another by closing the forceps, wherein locking means are provided on the said one jaw portion for locking a staple in position on the head when the jaw portions are open, the said locking means comprising a slide which is movable to overlie the web of a staple mounted on the head, and wherein release means are provided for releasing a staple as the jaw portions approach the closed position, the said release means comprising a cam surface on the slide and a cam on the said other jaw portion, the cam being adapted to engage the cam surface as the jaw portions are closed together thereby withdrawing the sliDe from the locked position.
Claim 2
Dependent Claim
229 words
A pair of forceps for setting a staple comprising two pivoted jaw portions, one jaw portion having a head at its free end adapted to support the web of the staple, a cage which surrounds the head and is adapted to support and guide the staple so that the ends of the staple project upwardly from the head and resilient means associated with the cage enabling the cage to move reciprocally relative to the head, the other jaw portion having a formed anvil at its free end, the anvil being adapted to depress the cage relative to the head and upset a staple located in the cage when the jaw portions are pivoted towards one another by closing the forceps, wherein locking means are provided on the said one jaw portion for locking a staple in position on the head when the jaw portions are open, the said locking means comprising a slide which is movable to overlie the web of a staple mounted on the head, and wherein release means are provided for releasing a staple as the jaw portions approach the closed position, the said release means comprising a cam surface on the slide and a cam on the said other jaw portion, the cam being adapted to engage the cam surface as the jaw portions are closed together thereby withdrawing the sliDe from the locked position.
Claim 3
Dependent Claim
198 words
A pair of forceps for setting a staple comprising two pivoted jaw portions, one jaw portion having a head at its free end adapted to support the web of the staple, a cage which surrounds the head and is adapted to support and guide the staple so that the ends of the staple project upwardly from the head and resilient means associated with the cage enabling the cage to move reciprocally relative to the head and the other jaw portion having a formed anvil at its free end, the anvil being adapted to depress the cage relative to the head and upset a staple located in the cage when the jaw portions are pivoted towards one another by closing the forceps and wherein the cage is adapted to hold the web of the staple aligned in the direction of the jaw portions and a slide is pivoted on the inside face of the said one jaw portion, the said slide being pivotable relative to the said head so as to overlie the web of a staple located on the head and means being provided for automatically pivoting the slide away from the staple-locking position as the jaws close.
Claim 4
Dependent Claim
198 words
A pair of forceps for setting a staple comprising two pivoted jaw portions, one jaw portion having a head at its free end adapted to support the web of the staple, a cage which surrounds the head and is adapted to support and guide the staple so that the ends of the staple project upwardly from the head and resilient means associated with the cage enabling the cage to move reciprocally relative to the head and the other jaw portion having a formed anvil at its free end, the anvil being adapted to depress the cage relative to the head and upset a staple located in the cage when the jaw portions are pivoted towards one another by closing the forceps and wherein the cage is adapted to hold the web of the staple aligned in the direction of the jaw portions and a slide is pivoted on the inside face of the said one jaw portion, the said slide being pivotable relative to the said head so as to overlie the web of a staple located on the head and means being provided for automatically pivoting the slide away from the staple-locking position as the jaws close.
Claim 5
Dependent Claim
66 words
A pair of forceps as claimed in claim 2, wherein the said means comprise a cam on the slide projecting upwardly from the inside face of the said one jaw portion and an inclined camming face on the said other jaw portion, the camming face being adapted to strike the cam as the jaws close and thereby rotate the slide away from the staple locking position.
Claim 6
Dependent Claim
62 words
A pair of forceps as claimed in claim 1, wherein the cage is movable relative to the head and normally spring urged into a position in which it projects upwardly from the head towards the anvil on the other jaw portion and wherein the cage is engaged and depressed by the anvil on the other jaw portion as the forceps are closed.
Claim 7
Dependent Claim
46 words
A pair of forceps as claimed in claim 4, wherein the cage is integral with a leaf spring, the free end of which is attached to the said one jaw portion on the outside face thereof and which normally urges the cage into the said position.
Claim 8
Dependent Claim
62 words
A pair of forceps as claimed in claim 2, wherein the cage is movable relative to the head and normally spring urged into a position in which it projects upwardly from the head towards the anvil on the other jaw portion and wherein the cage is engaged and depressed by the anvil on the other jaw portion as the forceps are closed.
Claim 9
Dependent Claim
46 words
A pair of forceps as claimed in claim 6, wherein the cage is integral with a leaf spring, the free end of which is attached to the said one jaw portion on the outside face thereof and which normally urges the cage into the said position.
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) | 1974-04-12 | 1974-10-12 | 1975-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-12 | 1978-10-12 | 1979-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-12 | 1982-10-12 | 1983-04-13 | $7700.00 | Window Closed / Lapsed |