US3809093A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surgical tool
Assignee: Individual
•
Filing: 1972-04-14
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Granted: 1974-05-07
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Expires: 1992-04-14
Abstract
Abstract The probe of a hand held surgical tool includes a surgical tip at the end of a rod which swings through a limited arc in one plane only at a rate of less than about 100 cycles per second. One or more stationary tubes supply fluid to and/or suction fluid from the region of the tip. For eye surgery, the probe may use a globular tip about 1 millimeter in diameter having a small (0.1 mm) lateral or forward cutting projection and/or an abrasive surface. The tool facilitates cataract removal through a small limbal opening, and is useful for other surgical procedures of the eye and other body areas.
Inventors
- 👤 S Abraham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:04
CPC Classifications
A; A61; A61F; A61F9/00; A61F9/007; A61F9/00736; A61F9/00754; A61F9/00763
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
104 words
A surgical tool for opthalmological surgery comprising: an elongated tubular handpiece, a probe extending from one end of said handpiece, said probe having a globular surgical tip with a maximum diameter of less than about 1.5 millimeters, means mounted in said handpiece for imparting only swinging motion to said probe through a limited arc in one plane only, at a rate of swinging of less than about 100 cycles per second, and at least one fluid flow tube extending from said handpiece end genernally parallel to said probe but spaced from said plane for communicating fluid to or from the region of said tip.
Claim 2
Dependent Claim
104 words
A surgical tool for opthalmological surgery comprising: an elongated tubular handpiece, a probe extending from one end of said handpiece, said probe having a globular surgical tip with a maximum diameter of less than about 1.5 millimeters, means mounted in said handpiece for imparting only swinging motion to said probe through a limited arc in one plane only, at a rate of swinging of less than about 100 cycles per second, and at least one fluid flow tube extending from said handpiece end genernally parallel to said probe but spaced from said plane for communicating fluid to or from the region of said tip.
Claim 3
Dependent Claim
23 words
A surgical tool according to claim 1 wherein said surgical tip includes a lateral cutting projection which protrudes less than about 0.2 millimeter.
Claim 4
Dependent Claim
23 words
A surgical tool according to claim 1 wherein said globular tip includes a forward cutting projection which protrudes less than about 0.2 millimeter.
Claim 5
Dependent Claim
57 words
A surgical tool according to claim 1 wherein said probe extends from said handpiece less than about 25 millimeters, wherein said probe diameter is less than about 1 millimeter, wherein said tube is less than about 2 millimeters in diameter, and wherein said arc is limited to a maximum tip excursion of less than about 3 millimeters.
Claim 6
Dependent Claim
21 words
A surgical tool according to claim 4 further comprisIng means, in said handpiece, for selectively adjusting the limits of said arc.
Claim 7
Dependent Claim
47 words
A surgical tool according to claim 1 and having two fluid flow tubes extending from said handpiece, together with means for selectively supplying fluid via one or both or said tubes and means for suctioning fluid from the region of said tip via one of said tubes.
Claim 8
Dependent Claim
23 words
A surgical tool according to claim 6 together with control means for selectively interconnecting said tubes and said means for supplying and suctioning.
Claim 9
Dependent Claim
32 words
A surgical tool according to claim 1 wherein said tube surrounds said probe and is of sufficient diameter to permit said probe to swing through said limited arc within said surrounding tube.
Claim 10
Dependent Claim
20 words
A surgical tool according to claim 1 wherein said probe is detachable from said means for imparting said swinging motion.
Claim 11
Dependent Claim
21 words
A surgical tool according to claim 1 together with fiber optic means for guiding light to the region of said tip.
Claim 12
Dependent Claim
61 words
A surgical tool according to claim 1 wherein said means for imparting said swinging motion comprises: a lever arm extending through a portion of said, handpiece and electromagnetic means for periodically attracting said arm toward one side of said handpiece, said arm thereafter resiliently returning toward the other side of said handpiece, such action imparting said swinging motion to said probe.
Claim 13
Dependent Claim
132 words
A hand held tool for opthalmological surgery comprising: a handpiece, probe means extending from an end of said handpiece and consisting of a probe having a surgical tip, means mounted in said handpiece for swinging said probe through a limited arc at a rate less than about 100 cycles per second, the probe being prevented from longitudinal motion in a direction parallel to the handpiece, the surgical tip of said probe being globular and having a maximum diameter of less than about 1.5 millimeters, said probe extending from said handpiece less than about 25 millimeters and having a diameter less than about 1 millimeter, said arc being limited to a maximum tip excursion of less than about 3 millimeters, and means, in said handpiece, for selectively adjusting the limits of said arc.
Claim 14
Dependent Claim
132 words
A hand held tool for opthalmological surgery comprising: a handpiece, probe means extending from an end of said handpiece and consisting of a probe having a surgical tip, means mounted in said handpiece for swinging said probe through a limited arc at a rate less than about 100 cycles per second, the probe being prevented from longitudinal motion in a direction parallel to the handpiece, the surgical tip of said probe being globular and having a maximum diameter of less than about 1.5 millimeters, said probe extending from said handpiece less than about 25 millimeters and having a diameter less than about 1 millimeter, said arc being limited to a maximum tip excursion of less than about 3 millimeters, and means, in said handpiece, for selectively adjusting the limits of said arc.
Claim 15
Dependent Claim
51 words
A surgical tool according to claim 12 further comprising: a pair of tubes extending from said handpiece generally parallel to said probe, together with means for supplying fluid, means for suctioning fluid, and distributor control means in said handpiece for selectively interconnecting said tubes and said means for supplying and suctioning.
Claim 16
Dependent Claim
26 words
A surgical tool according to claim 12 further comprising a light guide extending beside said probe from said handpiece to the vicinity of said surgical tip.
Claim 17
Dependent Claim
19 words
A surgical tool according to claim 12 wherein said surgical tip is globular and includes a lateral cutting projection.
Claim 18
Dependent Claim
27 words
A surgical tool according to claim 12 wherein said surgical tip is globular, at least a portion of the surface of said globular surgical tip being abrasive.
Claim 19
Dependent Claim
19 words
A surgical tool according to claim 12 wherein said surgical tip is globular and includes a forward cutting projection.
Claim 20
Dependent Claim
17 words
A surgical tool according to claim 1 wherein said globular surgical tip includes an abrasive surface region.
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) | 1977-05-06 | 1977-11-05 | 1978-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-06 | 1981-11-05 | 1982-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-06 | 1985-11-05 | 1986-05-07 | $7700.00 | Window Closed / Lapsed |