Patent US1923788A successfully refreshed from Google Patents.
Patent US5352223A successfully refreshed from Google Patents.
US5352223A
Expired / Lapsed
US
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Endoscopic instruments having distally extending lever mechanisms
Assignee: SYMBOISIS Corp
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Filing: 1993-07-13
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Granted: 1994-10-04
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Expires: 2013-07-13
Abstract
Abstract An endoscopic surgical instrument includes a proximal handle with a distally extending lever actuator. The handle and lever actuator are coupled by a tube and push rod to a pair of distal end effectors. The proximal end of the tube is mounted in a bushing having a flange which is freely rotatable within a flange receiving recess in the handle. The proximal end of the push rod extends proximally beyond the bushing and is coupled to the lever actuator by a ball and set screw coupling. The lever actuator preferably extends at least four inches distally from the proximal end of the handle and includes a finger ring near its distal end. The tube is preferably provided with a ferrule immediately distal of the handle for rotating the tube and push rod about the longitudinal axis of the instrument. The ferrule is preferably provided with a distal extension having an annular notch for locking engagement inside another endoscopic instrument. The lever actuator imparts a force to the end effectors which is magnified relative to the force applied to the actuator. The distal extension of the lever actuator and the finger ring allow the instrument to be operated with one finger while the instrument is grasped by the ferrule or mounted inside another endoscopic instrument.
Inventors
- 👤 Michael S. McBrayer
- 👤 Jurgen A. Kortenbach
- 👤 Saul Gottlieb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:54
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/28; A61B17/29; A61B17/2909; A61B18/00; A61B18/04; A61B18/12; A61B18/14; A61B18/1402; A61B2017/2912; A61B2017/2919; A61B2017/292
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
229 words
An endoscopic surgical instrument comprising: a) a hollow tube having a proximal end and a distal end; b) a rod having a proximal end and a distal end, said rod being carried inside said tube; c) handle means coupled to said proximal end of said tube; d) clevis means coupled to said distal end of said tube; e) first and second end effectors, wherein at least one of said first and second end effectors pivotally engages said clevis means and is coupled to said distal end of said rod; and f) an actuating lever pivotally coupled at a pivot location to said handle means, and coupled at a coupling location to said proximal end of said rod for imparting reciprocal motion to said rod relative to said tube which is translated at said clevis means to pivotal motion of said at least one of said first and second end effectors, said actuating lever having a proximal end portion including said pivot location and said coupling location, and said actuating lever extending substantially distally from said proximal end portion, wherein: said actuating lever has a lever portion extending substantially distally from said proximal end portion, and said pivot location is located between said coupling location and said lever portion such that movement of said lever portion towards said hollow tube effects a movement of said rod in a proximal direction.
Claim 2
Dependent Claim
229 words
An endoscopic surgical instrument comprising: a) a hollow tube having a proximal end and a distal end; b) a rod having a proximal end and a distal end, said rod being carried inside said tube; c) handle means coupled to said proximal end of said tube; d) clevis means coupled to said distal end of said tube; e) first and second end effectors, wherein at least one of said first and second end effectors pivotally engages said clevis means and is coupled to said distal end of said rod; and f) an actuating lever pivotally coupled at a pivot location to said handle means, and coupled at a coupling location to said proximal end of said rod for imparting reciprocal motion to said rod relative to said tube which is translated at said clevis means to pivotal motion of said at least one of said first and second end effectors, said actuating lever having a proximal end portion including said pivot location and said coupling location, and said actuating lever extending substantially distally from said proximal end portion, wherein: said actuating lever has a lever portion extending substantially distally from said proximal end portion, and said pivot location is located between said coupling location and said lever portion such that movement of said lever portion towards said hollow tube effects a movement of said rod in a proximal direction.
Claim 3
Dependent Claim
15 words
An endoscopic surgical instrument according to claim 1, wherein: said actuating lever is substantially J-shaped.
Claim 4
Dependent Claim
52 words
An endoscopic surgical instrument according to claim 2, wherein: said actuating lever has a distally extending portion which is substantially parallel a longitudinal axis of said hollow tube when said actuating lever is in one of a closed position, an open position, and a position between said closed and said open positions.
Claim 5
Dependent Claim
47 words
An endoscopic surgical instrument according to claim 3, wherein: said actuating lever has a proximal end and a distal end and a finger ring extending from said lever at a point closer to said distal end of said lever than to said proximal end of said lever.
Claim 6
Dependent Claim
23 words
An endoscopic instrument according to claim 4, wherein: said finger ring extends from said actuating lever at an angle of approximately forty-five degrees.
Claim 7
Dependent Claim
20 words
An endoscopic instrument according to claim 3, wherein: at least a protion of said lever presents an outer flat surface.
Claim 8
Dependent Claim
31 words
An endoscopic instrument according to claim 1, wherein: said actuating lever is coupled to said proximal end of said rod by a ball having a passage into which said rod extends.
Claim 9
Dependent Claim
38 words
An endoscopic instrument according to claim 1, wherein: said actuating lever has a proximal end and a distal end and a finger ring extending from said lever at a point closer to said distal end of said lever.
Claim 10
Dependent Claim
23 words
An endoscopic instrument according to claim 8, wherein: said finger ring extends from said actuating lever at an angle of approximately forty-five degrees.
Claim 11
Dependent Claim
21 words
An endoscopic instrument according to claim 1, wherein: said lever includes a distal finger ring located distally of said pivot location.
Claim 12
Dependent Claim
45 words
An endoscopic instrument according to claim 1, further comprising: g) a ferrule means coupled to said tube at a location substantially adjacent said handle means, said ferrule means for rotating said tube and rod relative to said handle about a longitudinal axis of said instrument.
Claim 13
Dependent Claim
41 words
An endoscopic instrument according to claim 11, wherein: said ferrule includes a proximal turning ring and an annular notch, said notch for cooperating with a stop mechanism of a surgical instrument having a port through which said endoscopic instrument is insertable.
Claim 14
Dependent Claim
52 words
An endoscopic instrument according to claim 11, wherein: said ferrule includes a proximal turning ring, and said proximal end portion of said actuating lever is narrow and round to fit in the palm of a hand of a practitioner who is holding said proximal turning ferrule with a thumb and another finger.
Claim 15
Dependent Claim
31 words
An endoscopic instrument according to claim 1, wherein: said proximal end portion of said actuating lever is narrow and rounded to fit in the palm of a hand of a practitioner.
Claim 16
Dependent Claim
46 words
An endoscopic instrument according to claim 1, wherein: said lever portion includes finger engagement means for receiving a finger of the practitioner and for permitting the practitioner to rotate said lever portion about said pivot location by moving the finger received by said finger engagement means.
Claim 17
Dependent Claim
254 words
An endoscopic surgical instrument comprising: a) a hollow tube having a proximal end and a distal end; b) a rod having a proximal end and a distal end, said rod being carried inside said tube, at least one of said rod and said hollow tube being electrically conductive; c) an electrically non-conductive handle means coupled to said proximal end of said tube; d) electrical contact means contained within said handle means for electrically coupling with said at least one of said rod and said hollow tube, said electrical contact means being coupled to flexible cable means for coupling with an external electrical source; e) clevis means coupled to said distal end of said tube; f) first and second end effectors, wherein at least one of said first and second end effectors pivotally engages said clevis means and is coupled to said distal end of said rod; and g) an actuating lever pivotally coupled at a pivot location said handle means, and coupled at a coupling location to said proximal end of said rod for imparting reciprocal motion to said rod relative to said tube which is translated at said clevis means to pivotal motion of said at least one of said first and second end effectors, said actuating lever having a proximal end portion including said pivot location and said coupling location, and said actuating lever extending substantially distally from said proximal end portion, said proximal end portion of said actuating lever including a passage through which said cable means exits said handle means.
Claim 18
Dependent Claim
254 words
An endoscopic surgical instrument comprising: a) a hollow tube having a proximal end and a distal end; b) a rod having a proximal end and a distal end, said rod being carried inside said tube, at least one of said rod and said hollow tube being electrically conductive; c) an electrically non-conductive handle means coupled to said proximal end of said tube; d) electrical contact means contained within said handle means for electrically coupling with said at least one of said rod and said hollow tube, said electrical contact means being coupled to flexible cable means for coupling with an external electrical source; e) clevis means coupled to said distal end of said tube; f) first and second end effectors, wherein at least one of said first and second end effectors pivotally engages said clevis means and is coupled to said distal end of said rod; and g) an actuating lever pivotally coupled at a pivot location said handle means, and coupled at a coupling location to said proximal end of said rod for imparting reciprocal motion to said rod relative to said tube which is translated at said clevis means to pivotal motion of said at least one of said first and second end effectors, said actuating lever having a proximal end portion including said pivot location and said coupling location, and said actuating lever extending substantially distally from said proximal end portion, said proximal end portion of said actuating lever including a passage through which said cable means exits said handle means.
Claim 19
Dependent Claim
28 words
An endoscopic instrument according to claim 16, wherein: said passage in said proximal portion of said actuating lever includes a removable cover through which said cable means passes.
Claim 20
Dependent Claim
48 words
An endoscopic instrument according to claim 17, wherein: said actuating lever has a broad paddle-like distal portion, said proximal portion of said actuating lever being narrower than said distal portion, and a middle portion of said actuating lever being narrower than said proximal portion of said actuating lever.
Claim 21
Dependent Claim
45 words
An endoscopic instrument according to claim 16, further comprising: h) a ferrule means coupled to said tube at a location substantially adjacent said handle means, said ferrule means for rotating said tube and rod relative to said handle about a longitudinal axis of said instrument.
Claim 22
Dependent Claim
218 words
An endoscopic instrument comprising: a) a hollow tube having a proximal end and a distal end; b) a rod having a proximal end and a distal end, said rod being carried inside said tube; c) handle means coupled to said proximal end of said tube; d) clevis means coupled to said distal end of said tube; e) first and second end effectors, wherein at least one of said first and second end effectors pivotally engages said clevis means and is coupled to said distal end of said rod: and f) an actuating lever pivotally coupled at a pivot location to said handle means, and coupled at a coupling location to said proximal end of said rod for imparting reciprocal motion to said rod relative to said tube which is translated at said clevis means to pivotal motion of said at least one of said first and second end effectors, said actuating lever having a proximal end portion including said pivot location and said coupling location, and said actuating lever extending substantially distally from said proximal end portion, wherein: said actuating lever has a broad paddle-like distal portion, said proximal portion of said actuating lever being narrower than said distal portion, and a middle portion of said actuating lever being narrower than said proximal portion of said actuating lever.
Claim 23
Dependent Claim
218 words
An endoscopic instrument comprising: a) a hollow tube having a proximal end and a distal end; b) a rod having a proximal end and a distal end, said rod being carried inside said tube; c) handle means coupled to said proximal end of said tube; d) clevis means coupled to said distal end of said tube; e) first and second end effectors, wherein at least one of said first and second end effectors pivotally engages said clevis means and is coupled to said distal end of said rod: and f) an actuating lever pivotally coupled at a pivot location to said handle means, and coupled at a coupling location to said proximal end of said rod for imparting reciprocal motion to said rod relative to said tube which is translated at said clevis means to pivotal motion of said at least one of said first and second end effectors, said actuating lever having a proximal end portion including said pivot location and said coupling location, and said actuating lever extending substantially distally from said proximal end portion, wherein: said actuating lever has a broad paddle-like distal portion, said proximal portion of said actuating lever being narrower than said distal portion, and a middle portion of said actuating lever being narrower than said proximal portion of said actuating lever.
References Cited (Backward Citations)
US2685880A
Cited
US2790437A
Cited
WO1981003122A1
Cited
US4644651A
Cited
US5174300A
Cited
US5242458A
Cited
US5184625A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-10-03 | 1998-04-04 | 1998-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-10-03 | 2002-04-04 | 2002-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-10-03 | 2006-04-04 | 2006-10-04 | $7700.00 | Window Closed / Lapsed |