US5261905A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spatula-hook instrument for laparoscopic cholecystectomy
Assignee: Davol Inc
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Filing: 1992-09-04
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Granted: 1993-11-16
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Expires: 2012-09-04
Abstract
Abstract An improved electro-surgical laparoscopic cholecystectomy instrument having a housing (12) formed from an elongated rigid tube for suction and irrigation functionality wherein a distal end (16) of the housing (12) is placed an electrode (18) in the shape of a spatula with an arcuate placed notch (28) therein. The tip (30) of the spatula facilitates the blunt dissection at the electrode (18) and the notch allows for retracting dissection. The electrode (18) available to accept the requisite energy of electrocautery for coagulating and cauterizing.
Inventors
- 👤 James H. Doresey, III
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:57
CPC Classifications
A; A61; A61B; A61B18/00; A61B18/04; A61B18/12; A61B18/14; A61B18/1482; A61B17/00; A61B17/32; A61B2017/320044; A61B2018/00315; A61B2018/00529; A61B2018/00535; A61B2018/1405; A61B2018/1422; A61B90/00; A61B90/08; A61B2090/0817; A61B2218/00; A61B2218/001; A61B2218/002; A61B2218/007
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
120 words
An electrode-surgical laparoscopic cholecystectomy instrument comprising: a housing means comprised of an elongated rigid tube having a distal end and a base end, said base end having a means for coupling to a laparoscopic instrument control valve; a conductor placed in said base end of said housing means for coupling to an external energy source; and an electrode extending outward from said distal end and mounted thereto, said electrode having a spoon shaped spatula surface at a first end, the spoon shaped spatula surface defined by a centrally disposed concavity having an outer circular perimeter with an arcuate notch placed therein, said notch defining a hook edge within the spoon shaped spatula surface, said electrode electrically connected to said conductor.
Claim 2
Dependent Claim
120 words
An electrode-surgical laparoscopic cholecystectomy instrument comprising: a housing means comprised of an elongated rigid tube having a distal end and a base end, said base end having a means for coupling to a laparoscopic instrument control valve; a conductor placed in said base end of said housing means for coupling to an external energy source; and an electrode extending outward from said distal end and mounted thereto, said electrode having a spoon shaped spatula surface at a first end, the spoon shaped spatula surface defined by a centrally disposed concavity having an outer circular perimeter with an arcuate notch placed therein, said notch defining a hook edge within the spoon shaped spatula surface, said electrode electrically connected to said conductor.
Claim 3
Dependent Claim
36 words
The laparoscopic cholecystectomy instrument according to claim 1, wherein said housing means is further defined as having a length and a diameter allowing for slidable insertion of said instrument into and extension therethrough of a cannula.
Claim 4
Dependent Claim
20 words
The laparoscopic cholecystectomy instrument according to claim 2, wherein said length of said housing means is greater than 11 inches.
Claim 5
Dependent Claim
19 words
The laparoscopic cholecystectomy instrument according to claim 2, wherein said diameter of said housing means is about 5/32 inches.
Claim 6
Dependent Claim
24 words
The laparoscopic cholecystectomy instrument according to claim 1, wherein said housing means is constructed of stainless steel coated with a TEFLON shrink wrap insulation.
Claim 7
Dependent Claim
20 words
The laparoscopic cholecystectomy instrument according to claim 1, wherein said laparoscopic instrument control valve is coupled to a vacuum source.
Claim 8
Dependent Claim
20 words
The laparoscopic cholecystectomy instrument according to claim 1, wherein the laparoscopic instrument control valve is a NEZHAT-DORSEY HYDRO-DISSECTION Trumpet Valve.
Claim 9
Dependent Claim
36 words
The laparoscopic cholecystectomy instrument according to claim 1, wherein the notch placed in the spoon shaped spatula surface of said electrode is disposed non-collinearly with said interior chamber allowing uninhibited fluid transfer with said housing means.
Claim 10
Dependent Claim
139 words
An electro-surgical laparoscopic cholecystectomy instrument comprising: a housing means comprised on an elongated stainless steel rigid tube coated with a TEFLON and shrink wrap insulation said rigid tube having a distal end and a base end having a length and a diameter allowing for slidable insertion of an electrode and extending through said rigid tube and, said base end having a means for coupling to a vacuum source; a conductor placed in said base end of said housing means for coupling to an external energy source; and said electrode extending outward from said distal end and mounted thereto, said electrode having a spoon shaped spatula surface at a first end, the spoon shaped spatula surface defined by a centrally disposed concavity having an outer circular perimeter with an arcuate notch placed therein, said electrode electrically connected to said conductor.
Claim 11
Dependent Claim
139 words
An electro-surgical laparoscopic cholecystectomy instrument comprising: a housing means comprised on an elongated stainless steel rigid tube coated with a TEFLON and shrink wrap insulation said rigid tube having a distal end and a base end having a length and a diameter allowing for slidable insertion of an electrode and extending through said rigid tube and, said base end having a means for coupling to a vacuum source; a conductor placed in said base end of said housing means for coupling to an external energy source; and said electrode extending outward from said distal end and mounted thereto, said electrode having a spoon shaped spatula surface at a first end, the spoon shaped spatula surface defined by a centrally disposed concavity having an outer circular perimeter with an arcuate notch placed therein, said electrode electrically connected to said conductor.
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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) | 1996-11-15 | 1997-05-17 | 1997-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-11-15 | 2001-05-17 | 2001-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-11-15 | 2005-05-17 | 2005-11-16 | $7700.00 | Window Closed / Lapsed |