Patent EP0095727A1 successfully refreshed from Google Patents.
EP0095727A1
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Method and apparatus for inserting a defibrillator electrode and defibrillator electrode
Assignee: Purdue Research Foundation
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Filing: 1983-05-26
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Granted: —
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Expires: 2003-05-26
Abstract
Abstract A novel defibrillator electrode assembly is provided, comprising a length of titanium mesh connected at a first end to an insulated wire and preferably having one or more barbs at the second end, the whole being contained within a cannula with a flattened end having slots to accommodate the barbs. The assembly is inserted, flattened end first, by way of an endoscope into the abdominal cavity and through an incision in the dia- phragm/pericardium membrane into the pericardial sac and adjacent the epicardium, after which the cannula is withdrawn, leaving the electrode in place.
Inventors
- 👤 Willis A. Tacker, Jr.
- 👤 Charles Fredrick Babbs
- 👤 Joe Dan Bourland
- 👤 Leslie Alexander Geddes
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 17:40
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/18; A61N1/32; A61N1/38; A61N1/39; A61N1/3956; A61N1/02; A61N1/04; A61N1/05; A61N1/0587
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
114 words
A method for inserting a defibrillator electrode between the heart and the pericardium which comprises inserting an endoscope through the abdominal wall into the abdominal cavity to a point adjacent the diaphragm and immediately beneath the heart, making an incision through the diaphragm and the pericardium with a knife introduced through the endoscope, withdrawing the knife, inserting through the endoscope and through the incision into the region between the epicardium and the pericardium an open-ended cannula bearing in its distal end a defibrillator electrode connected to an insulated wire extending backward to and emerging from the proximal end of the cannula, withdrawing the cannula while leaving the electrode in place, and withdrawing the endoscope.
Claim 2
Independent Claim
114 words
A method for inserting a defibrillator electrode between the heart and the pericardium which comprises inserting an endoscope through the abdominal wall into the abdominal cavity to a point adjacent the diaphragm and immediately beneath the heart, making an incision through the diaphragm and the pericardium with a knife introduced through the endoscope, withdrawing the knife, inserting through the endoscope and through the incision into the region between the epicardium and the pericardium an open-ended cannula bearing in its distal end a defibrillator electrode connected to an insulated wire extending backward to and emerging from the proximal end of the cannula, withdrawing the cannula while leaving the electrode in place, and withdrawing the endoscope.
Claim 3
Dependent Claim
24 words
The method of claim 1 wherein said defibrillator electrode includes one or more barbs near its distal end adapted to catch into the pericardium.
Claim 4
Dependent Claim
14 words
The method of claim 1 wherein said defibrillator electrode is made of titanium mesh.
Claim 5
Dependent Claim
21 words
The method of claim 1 wherein said cannula is flattened and widened at its distal end to accommodate said defibrillator electrode.
Claim 6
Dependent Claim
24 words
The method of claim 1 wherein two defibrillator electrodes are positioned laterally on opposite sides of the heart between the epicardium and the pericardium.
Claim 7
Dependent Claim
99 words
A cannula assembly adapted for inserting a defibrillator electrode (10) between the epicardium and-the pericardium, which comprises a cannula (30) flattened and widened at its distal end (31) to accommodate a defibrillator electrode (10), a defibrillator electrode (10) within said distal end (31) having one or more barbs (11) at its distal end (12) with points (13) directed proximally and resting in slots (33) in said cannula (30), and an insulated wire (15) connected to the proximal end (14) of said defibrillator electrode (10) and extending backward to and emerging from the proximal end (32) of said cannula (30).
Claim 8
Dependent Claim
99 words
A cannula assembly adapted for inserting a defibrillator electrode (10) between the epicardium and-the pericardium, which comprises a cannula (30) flattened and widened at its distal end (31) to accommodate a defibrillator electrode (10), a defibrillator electrode (10) within said distal end (31) having one or more barbs (11) at its distal end (12) with points (13) directed proximally and resting in slots (33) in said cannula (30), and an insulated wire (15) connected to the proximal end (14) of said defibrillator electrode (10) and extending backward to and emerging from the proximal end (32) of said cannula (30).
Claim 9
Dependent Claim
63 words
A defibrillator electrode (10) assembly comprising a portion of titanium mesh between about 5 cm and about 9 cm in length, and about 8 mm and about 20 mm in width, having one or more barbs (11) attached at one end with points (13) directed toward the body of the electrode (10), and an insulated wire (15) attached at the opposite end (14).
Claim 10
Dependent Claim
63 words
A defibrillator electrode (10) assembly comprising a portion of titanium mesh between about 5 cm and about 9 cm in length, and about 8 mm and about 20 mm in width, having one or more barbs (11) attached at one end with points (13) directed toward the body of the electrode (10), and an insulated wire (15) attached at the opposite end (14).
Claim 11
Independent Claim
139 words
An apparatus for inserting a defibrillator electrode (10) between the heart and the pericardium which comprises an endoscope for insertion through the abdominal wall into the abdominal cavity to a point adjacent the diaphragm and immediately beneath the heart, a knife introduced and withdrawn through the endoscope for making an incision through the diaphragm and the pericardium, an open-ended cannula (30) for insertion through the endoscope and through the incision into the region between the epicardium and the pericardium, the open-ended cannula (30) bearing in its distal end (31) a defibrillator electrode (10) connected to an insulated wire (15) extending backward to and emerging from the proximal end (32) of the cannula (30), and means (11) for affixing the defibrillator electrode (10) to the pericardium leaving the electrode (10) in place when the cannula (30) and endoscope are withdrawn.
Claim 12
Independent Claim
139 words
An apparatus for inserting a defibrillator electrode (10) between the heart and the pericardium which comprises an endoscope for insertion through the abdominal wall into the abdominal cavity to a point adjacent the diaphragm and immediately beneath the heart, a knife introduced and withdrawn through the endoscope for making an incision through the diaphragm and the pericardium, an open-ended cannula (30) for insertion through the endoscope and through the incision into the region between the epicardium and the pericardium, the open-ended cannula (30) bearing in its distal end (31) a defibrillator electrode (10) connected to an insulated wire (15) extending backward to and emerging from the proximal end (32) of the cannula (30), and means (11) for affixing the defibrillator electrode (10) to the pericardium leaving the electrode (10) in place when the cannula (30) and endoscope are withdrawn.
Claim 13
Dependent Claim
32 words
The apparatus of claim 8 wherein the electode (10) affixing means includes one or more barbs (11) near the distal end (12) of the electrode (10) adapted to catch into the pericardium.
Claim 14
Dependent Claim
15 words
The apparatus of claim 8 wherein said defibrillator electrode (10) is made of titanium mesh.
Claim 15
Dependent Claim
24 words
The apparatus of claim 8 wherein said cannula (30) is flattened and widened at its distal end (31) to accomodate said defibrillator electrode (10).
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