US5690656A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for creating abdominal visceral anastomoses
Assignee: Cook Medical Technologies LLC
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Filing: 1995-06-27
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Granted: 1997-11-25
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Expires: 2015-06-27
Abstract
Abstract A method and apparatus for creating abdominal visceral anastomoses. A first magnet is placed within a first viscera and a second, larger magnet is placed within a second viscera. The magnets each have a raised rim around their perimeters. The two magnets couple to each other by virtue of their mutual attraction, thereby capturing a portion of the intervening visceral walls between them. The coupling of the magnets is automatically self-centering, as the smaller magnet is forced to rest within the raised rim of the larger magnet. Additionally, the raised rim of the smaller magnet acts as a fine cutting edge in order to accelerate the process of ischemic necrosis of the tissue captured between the two magnets, thereby forming the anastomosis. Use of the present invention avoids the need for general anasthesia and a laparotic incision, resulting in fewer surgical and post-surgical complications.
Inventors
- 👤 Constantin Cope
- 👤 Hans A. Timmermans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:35
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/11; A61B17/068; A61B17/1114; A61B2017/00831; A61B2017/00876; A61B2017/1117; A61B2017/1135; A61B2017/1139
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
117 words
A method for forming an anastomoses between first and second adjacent viscera, comprising the steps of: (a) inserting a first magnet into a viscera adjacent a digestive tract; (b) inserting a second magnet into a stomach of the digestive tract, wherein at least one of the first and second magnets includes means for self-centering engagement during magnetic attraction, so that the second magnet travels down the digestive tract until it is attracted to the first magnet and is coupled thereto through a digestive tract wall and a visceral wall in a self-centering engagement; and (c) allowing tissue compressed between the first and second magnets by magnetic attraction between the first and second magnets to undergo ischemic necrosis.
Claim 2
Independent Claim
117 words
A method for forming an anastomoses between first and second adjacent viscera, comprising the steps of: (a) inserting a first magnet into a viscera adjacent a digestive tract; (b) inserting a second magnet into a stomach of the digestive tract, wherein at least one of the first and second magnets includes means for self-centering engagement during magnetic attraction, so that the second magnet travels down the digestive tract until it is attracted to the first magnet and is coupled thereto through a digestive tract wall and a visceral wall in a self-centering engagement; and (c) allowing tissue compressed between the first and second magnets by magnetic attraction between the first and second magnets to undergo ischemic necrosis.
Claim 3
Dependent Claim
22 words
The method of claim 1, further comprising the step of: (d) flushing the first and second magnets out of the digestive tract.
Claim 4
Dependent Claim
11 words
The method of claim 1, wherein step (a) is performed percutaneously.
Claim 5
Dependent Claim
18 words
The method of claim 1, wherein step (b) is performed by having a patient swallow the second magnet.
Claim 6
Dependent Claim
40 words
The method of claim 1, wherein the self-centering engagement is produced by a peripheral raised rim on the second magnet, the rim forcing the first magnet into centered alignment with the second magnet when the first and second magnet engage.
Claim 7
Dependent Claim
17 words
The method of claim 1, wherein step (a) further comprises inserting the first magnet into a gallbladder.
Claim 8
Dependent Claim
19 words
The method of claim 1, wherein step (a) further comprises inserting the first magnet into a common bile duct.
Claim 9
Independent Claim
101 words
A method for forming an anastomoses between first and second adjacent viscera, comprising the steps of: (a) inserting a first magnet into a first viscera; (b) inserting a second magnet into a second viscera, wherein at least one of the first and second magnets includes means for self-centering engagement during magnetic attraction, so that the second magnet is attracted to the first magnet and is coupled thereto through first and second visceral walls in a self-centering engagement; and (c) allowing tissue compressed between the first and second magnets by magnetic attraction between the first and second magnets to undergo ischemic necrosis.
Claim 10
Independent Claim
101 words
A method for forming an anastomoses between first and second adjacent viscera, comprising the steps of: (a) inserting a first magnet into a first viscera; (b) inserting a second magnet into a second viscera, wherein at least one of the first and second magnets includes means for self-centering engagement during magnetic attraction, so that the second magnet is attracted to the first magnet and is coupled thereto through first and second visceral walls in a self-centering engagement; and (c) allowing tissue compressed between the first and second magnets by magnetic attraction between the first and second magnets to undergo ischemic necrosis.
Claim 11
Dependent Claim
22 words
The method of claim 8, further comprising the step of: (d) removing the first and second magnets after the anastomosis has formed.
Claim 12
Dependent Claim
11 words
The method of claim 8, wherein step (a) is performed percutaneously.
Claim 13
Dependent Claim
13 words
The method of claim 8, wherein steps (a) and (b) are performed percutaneously.
Claim 14
Dependent Claim
40 words
The method of claim 8, wherein the self-centering engagement is produced by a peripheral raised rim on the second magnet, the rim forcing the first magnet into centered alignment with the second magnet when the first and second magnet engage.
Claim 15
Dependent Claim
29 words
The method of claim 8, wherein step (a) further comprises inserting the first magnet into a jejunum and step (b) further comprises inserting the second magnet into a stomach.
Claim 16
Dependent Claim
31 words
The method of claim 8, wherein step (a) further comprises inserting the first magnet into a common bile duct and step (b) further comprises inserting the second magnet into a duodenum.
Claim 17
Independent Claim
121 words
A method for form jug an anastomoses between first and second portions of a digestive tract, comprising the steps of: (a) inserting a first magnet into a stomach; (b) waiting a period of time while the first magnet travels down the digestive tract; (c) inserting a second magnet into the stomach, wherein at least one of the first and second magnets includes means for self-centering engagement during magnetic attraction, so that the second magnet is attracted to the first magnet and is coupled thereto through first and second walls of the digestive tract in a self-centering engagement; and (d) allowing tissue compressed between the first and second magnets by magnetic attraction between the first and second magnets to undergo ischemic necrosis.
Claim 18
Independent Claim
121 words
A method for form jug an anastomoses between first and second portions of a digestive tract, comprising the steps of: (a) inserting a first magnet into a stomach; (b) waiting a period of time while the first magnet travels down the digestive tract; (c) inserting a second magnet into the stomach, wherein at least one of the first and second magnets includes means for self-centering engagement during magnetic attraction, so that the second magnet is attracted to the first magnet and is coupled thereto through first and second walls of the digestive tract in a self-centering engagement; and (d) allowing tissue compressed between the first and second magnets by magnetic attraction between the first and second magnets to undergo ischemic necrosis.
Claim 19
Dependent Claim
22 words
The method of claim 15, further comprising the step of: (e) flushing the first and second magnets out of the digestive tract.
Claim 20
Dependent Claim
14 words
The method of claim 15, wherein step (a) is performed with a guide wire.
Claim 21
Independent Claim
169 words
A device for forming an anastomoses between adjacent viscera, comprising: a first magnet having opposing first and second faces; a first jacket having opposing first and second rims, said first jacket formed around a first periphery of the first magnet on a first surface connecting the first and second faces, wherein the first and second jacket rims are spaced farther apart than the first and second magnet faces wherein said first and second rims include means for promoting tissue necrosis; a second magnet having opposing third and fourth faces; and a second jacket having opposing third and fourth rims, said second jacket formed around a second periphery of the second magnet on a second surface connecting the third and fourth faces, wherein the third and fourth jacket rims are spaced farther apart than the third and fourth magnet faces; wherein the second periphery is smaller than the first periphery, such that the first and second magnets are self-centering when they are magnetically coupled through walls of the adjacent viscera.
Claim 22
Independent Claim
169 words
A device for forming an anastomoses between adjacent viscera, comprising: a first magnet having opposing first and second faces; a first jacket having opposing first and second rims, said first jacket formed around a first periphery of the first magnet on a first surface connecting the first and second faces, wherein the first and second jacket rims are spaced farther apart than the first and second magnet faces wherein said first and second rims include means for promoting tissue necrosis; a second magnet having opposing third and fourth faces; and a second jacket having opposing third and fourth rims, said second jacket formed around a second periphery of the second magnet on a second surface connecting the third and fourth faces, wherein the third and fourth jacket rims are spaced farther apart than the third and fourth magnet faces; wherein the second periphery is smaller than the first periphery, such that the first and second magnets are self-centering when they are magnetically coupled through walls of the adjacent viscera.
Claim 23
Dependent Claim
14 words
The device of claim 18, wherein the first and second magnets are rare-earth magnets.
Claim 24
Dependent Claim
39 words
The device of claim 18, wherein: the first rim extends beyond the first face; the second rim extends beyond the second face; the third rim extends beyond the third face; and the fourth rim extends beyond the fourth face.
Claim 25
Dependent Claim
17 words
The device of claim 18, wherein the first and second jackets are formed from a nonferrous metal.
Claim 26
Dependent Claim
39 words
The device of claim 18, further comprising: a first coating surrounding the first magnet and first jacket assembly; and a second coating surrounding the second magnet and second jacket assembly; wherein the first and second coatings are acid resistant.
Claim 27
Dependent Claim
37 words
The device of claim 18, wherein: the first magnet includes a first axial hole formed between the first and second faces; and the second magnet includes a second axial hole formed between the third and fourth faces.
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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) | 2000-11-24 | 2001-05-26 | 2001-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-11-24 | 2005-05-26 | 2005-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-11-24 | 2009-05-26 | 2009-11-25 | $7700.00 | Window Closed / Lapsed |