US3823719A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Finger operated forceps type surgical instrument
Assignee: Acme United Corp
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Filing: 1972-11-14
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Granted: 1974-07-16
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Expires: 1992-11-14
Abstract
Abstract An inexpensive and efficient clamp type surgical instrument which is comfortable to use and eliminates excessive pressure at the jaws of the instrument is produced by incorporating heel and shoulder stops and open finger gripping loops having a return curve portion between the normal finger gripping position and the pivot axis of the instrument''s arms. The return curve portion in the finger gripping loops of the instrument prevents the operator''s fingers from sliding into the open portion of rhe fingerloops, thereby eliminating pinching the operator''s fingers. The heel and shoulder stops assure that the jaws of the surgical instrument cannot have more force applied thereto than the instrument is designed to handle. As a result, these features of the surgical instrument of this invention cooperate to provide an inexpensive instrument having the rigidity and feel of more expensive surgical instruments.
Inventors
- 👤 C Cummings
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:00
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/28; A61B17/2812; A61B17/2841; A61B17/2833; A61B2017/2837
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
91 words
A hand-operated surgical instrument comprising two cooperating arms pivotally interconnected along a single axis, each of said arms comprising: A. a jaw member located at one end of said arm; and B. a finger loop located at the other end of said arm, said loop comprising a means for preventing unwanted finger advancement toward said pivot axis incorporating a finger-restraining section in the portion of the loop nearest said pivot axis, said section defined by a curved portion extending towards the loop and a reverse-curved portion extending away from the loop.
Claim 2
Dependent Claim
91 words
A hand-operated surgical instrument comprising two cooperating arms pivotally interconnected along a single axis, each of said arms comprising: A. a jaw member located at one end of said arm; and B. a finger loop located at the other end of said arm, said loop comprising a means for preventing unwanted finger advancement toward said pivot axis incorporating a finger-restraining section in the portion of the loop nearest said pivot axis, said section defined by a curved portion extending towards the loop and a reverse-curved portion extending away from the loop.
Claim 3
Dependent Claim
22 words
An instrument as defined in claim 1, wherein each of said cooperating arms is manufactured from a single piece of rod-like material.
Claim 4
Dependent Claim
27 words
An instrument as defined in claim 2, wherein said curved portion of said finger restraining section comprises a concavely curved portion converging smoothly with said finger loop.
Claim 5
Dependent Claim
29 words
An instrument as defined in claim 3, wherein said reverse-curved portion of said finger restraining section further comprises a convexly curved portion converging smoothly with said concavely curved portion.
Claim 6
Dependent Claim
33 words
An instrument as defined in claim 1, wherein said finger loops further comprise terminating ends incorporting: c. a ratchet lock section mounted on each arm and substantially adjacent to said finger restraining section.
Claim 7
Dependent Claim
36 words
An instrument as defined in claim 5, wherein each of said ratchet lock sections comprises at least two interlocking ratchet teeth, having an effective, extending height less than the cross-sectional height of said ratchet lock section.
Claim 8
Dependent Claim
45 words
An instrument as defined in claim 6, wherein said ratchet lock section comprises a substantially flat surface extending from the terminating edge of the last ratchet tooth to the outer peripheral surface of said ratchet lock section, preventing further engaged advancement of interlocked ratchet sections.
Claim 9
Dependent Claim
65 words
An instrument as defined in claim 2, wherein each of said arms are further defined as comprising a substantially flat zone peripherally disposed about said pivot axis and incorporating: a. a heel stop, and b. a shoulder stop cooperating with the heel stop of the other arm to prevent additional closing force from being applied to said jaw members, once said jaw members are closed.
Claim 10
Dependent Claim
154 words
A hand-operated surgical instrument comprising two cooperating arms pivotally interconnected along a single axis, and comprising: A. cooperating jaw members, each located on one end of said arms, spaced away from said pivot axis in a similar direction; B. finger loops spaced away from said pivot axis in an opposite direction from said jaw members; C. a substantially flat zone peripherally disposed about said pivot axis and incorporating: a. a heel stop, and b. a shoulder stop cooperating with the heel stop of the other arm to prevent additional closing force from being applied to said jaw members when said jaw members are closed; and D. means for preventing further engaged advancement of interlocked ratchet sections comprising ratchet lock sections mounted on each arm adjacent said finger loops, each comprising a substantially flat surface extending from the terminating edge of the last ratchet tooth to the outer peripheral surface of said ratchet lock section.
Claim 11
Dependent Claim
154 words
A hand-operated surgical instrument comprising two cooperating arms pivotally interconnected along a single axis, and comprising: A. cooperating jaw members, each located on one end of said arms, spaced away from said pivot axis in a similar direction; B. finger loops spaced away from said pivot axis in an opposite direction from said jaw members; C. a substantially flat zone peripherally disposed about said pivot axis and incorporating: a. a heel stop, and b. a shoulder stop cooperating with the heel stop of the other arm to prevent additional closing force from being applied to said jaw members when said jaw members are closed; and D. means for preventing further engaged advancement of interlocked ratchet sections comprising ratchet lock sections mounted on each arm adjacent said finger loops, each comprising a substantially flat surface extending from the terminating edge of the last ratchet tooth to the outer peripheral surface of said ratchet lock section.
Claim 12
Dependent Claim
44 words
An instrument as defined in claim 9, wherein said finger loops are further defined as incorporating means for preventing unwanted advancement of the finger toward said pivot axis comprising a double reverse-curved finger-restraining section in the portion of the loop nearest said pivot axis.
Claim 13
Dependent Claim
28 words
An instrument as defined in claim 9, wherein said shoulder stop is further defined as comprising one of the sides of said arm adjaceNt to said flat zone.
Claim 14
Dependent Claim
29 words
An instrument as defined in claim 9, wherein said heel stop comprises the intermediate raised portion between said substantially flat zone and the outer peripheral surface of said arm.
Claim 15
Dependent Claim
36 words
An instrument as defined in claim 9, wherein each of said ratchet lock sections comprises at least two interlocking ratchet teeth having an effective, extending height less than the cross-section height of said ratchet lock section.
Claim 16
Dependent Claim
142 words
A hand-operated surgical instrument comprising two cooperating arms pivotally interconnected along a single axis, and comprising: A. cooperating jaw members, each located on one end of said arms, spaced away from said pivot axis in an identical direction; B. a finger-loop portion for controlling the movement of said arms and said jaw members spaced away from said pivot axis in an opposite direction from said jaw members; and C. a ratchet lock section mounted on each arm, interconnected with said finger loop portion, and comprising: a. at least two interlocking ratchet teeth having a height less than the height of said ratchet lock section, and b. a substantially flat surface extending from the terminating edge of the last ratchet tooth to the outer peripheral surface of the ratchet lock section comprising a means for preventing further engaged advancement of interlocked ratchet sections.
Claim 17
Dependent Claim
142 words
A hand-operated surgical instrument comprising two cooperating arms pivotally interconnected along a single axis, and comprising: A. cooperating jaw members, each located on one end of said arms, spaced away from said pivot axis in an identical direction; B. a finger-loop portion for controlling the movement of said arms and said jaw members spaced away from said pivot axis in an opposite direction from said jaw members; and C. a ratchet lock section mounted on each arm, interconnected with said finger loop portion, and comprising: a. at least two interlocking ratchet teeth having a height less than the height of said ratchet lock section, and b. a substantially flat surface extending from the terminating edge of the last ratchet tooth to the outer peripheral surface of the ratchet lock section comprising a means for preventing further engaged advancement of interlocked ratchet sections.
Claim 18
Dependent Claim
61 words
An instrument as defined in claim 14, wherein said handle portion is further defined as comprising: a. a finger holding portion for controlling the movement of said arms and said jaw members, and b. a finger slip-preventing portion positioned between said finger holding portion and said pivot axis for preventing unwanted advancement from said finger holding portion toward said pivot axis.
Claim 19
Dependent Claim
65 words
An instrument as defined in claim 14, wherein each of said arms is further defined as comprising a substantially flat zone peripherally disposed about said pivot axis and incorporating: a. a heel stop, and b. a shoulder stop cooperating with the heel stop of the other arm to prevent additional closing force from being applied to said jaw members, once said jaw members are closed.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-07-15 | 1978-01-14 | 1978-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-15 | 1982-01-14 | 1982-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-15 | 1986-01-14 | 1986-07-16 | $7700.00 | Window Closed / Lapsed |