US6790237B2
Expired / Lapsed
US
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Medical stent with a valve and related methods of manufacturing
Assignee: Boston Scientific Scimed Inc
•
Filing: 2001-10-09
•
Granted: 2004-09-14
•
Expires: 2021-10-09
Abstract
Abstract Medical stents having valves and their methods of manufacture are disclosed. The valve may be basket-shaped and formed integral to a medical stent to prevent undesirable backflow across the valve. The valve can be formed by converting the braided wires of the stent, by providing elastomeric material onto a mold or fixture to form an elastomeric valve, or by attaching a gasket valve. The valve is normally closed but configured to allow easy opening in response to a predetermined condition.
Inventors
- 👤 Jonathan S. Stinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:41
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/04; A61F2/24; A61F2/2412; A61F2/2418; A61F2/82; A61F2/86; A61F2002/044
Claims Analysis
Total Claims: 67
Claim 1
Independent Claim
93 words
A medical esophageal stent having a valve, comprising: a generally tubular body formed of braided wires and having a proximal end portion and a distal end portion, the tubular body being sized and configured to be placed in an esophagus of a patient; and a normally closed valve formed of non-braided wires extended from the braided wires of the tubular body, wherein the valve is configured to open in response to a predetermined condition, wherein a valved end of the valve includes an opening when the valve is in a normally closed position.
Claim 2
Dependent Claim
93 words
A medical esophageal stent having a valve, comprising: a generally tubular body formed of braided wires and having a proximal end portion and a distal end portion, the tubular body being sized and configured to be placed in an esophagus of a patient; and a normally closed valve formed of non-braided wires extended from the braided wires of the tubular body, wherein the valve is configured to open in response to a predetermined condition, wherein a valved end of the valve includes an opening when the valve is in a normally closed position.
Claim 3
Dependent Claim
23 words
The medical esophageal stent according to claim 1 , wherein at least a portion of the tubular body is provided with a covering.
Claim 4
Dependent Claim
25 words
The medical esophageal stent according to claim 2 , wherein the material for the covering is selected from a group of polyurethane, polytetrafluoroethylene, and silicone.
Claim 5
Dependent Claim
22 words
The medical esophageal stent according to claim 1 , wherein at least a portion of the valve is provided with a covering.
Claim 6
Dependent Claim
25 words
The medical esophageal stent according to claim 4 , wherein the material for the covering is selected from a group of polyurethane, polytetrafluoroethylene, and silicone.
Claim 7
Dependent Claim
27 words
The medical esophageal stent according to claim 1 , wherein the predetermined condition is a predetermined pressure difference between an upstream and a downstream of the valve.
Claim 8
Dependent Claim
16 words
The medical esophageal stent according to claim 1 , wherein the valve is a one-way valve.
Claim 9
Dependent Claim
19 words
The medical esophageal stent according to claim 1 , wherein the extended wires forming the valve are curled inwards.
Claim 10
Dependent Claim
32 words
The medical esophageal stent according to claim 1 , wherein the extended wires forming the valve have a straight portion and a bend inwards at a predetermined location of the extended wires.
Claim 11
Dependent Claim
30 words
The medical esophageal stent according to claim 1 , wherein the extended wires forming the valve are curled so that middle portions of the extended wires converge toward each other.
Claim 12
Dependent Claim
24 words
The medical esophageal stent according to claim 1 , wherein the predetermined condition is a passage of food from the esophagus into the stomach.
Claim 13
Dependent Claim
26 words
The medical esophageal stent according to claim 1 , wherein the predetermined condition is a vomiting of a stomach content from the stomach to the esophagus.
Claim 14
Dependent Claim
77 words
A medical stent having a valve, comprising: a generally tapered tubular body formed of braided wires and having a proximal end portion and a distal end portion; and a normally closed valve formed of non-braided wires extended from the braided wires of the tubular body, wherein the valve is configured to open in response to a predetermined condition, wherein a valved end of the valve includes an opening when the valve is in a normally closed position.
Claim 15
Dependent Claim
77 words
A medical stent having a valve, comprising: a generally tapered tubular body formed of braided wires and having a proximal end portion and a distal end portion; and a normally closed valve formed of non-braided wires extended from the braided wires of the tubular body, wherein the valve is configured to open in response to a predetermined condition, wherein a valved end of the valve includes an opening when the valve is in a normally closed position.
Claim 16
Dependent Claim
24 words
The medical stent according to claim 13 , wherein at least a portion of the tubular body and valve is provided with a covering.
Claim 17
Dependent Claim
24 words
The medical stent according to claim 14 , wherein the material for the covering is selected from a group of polyurethane, polytetrafluoroethylene, and silicone.
Claim 18
Dependent Claim
26 words
The medical stent according to claim 13 , wherein the predetermined condition is a predetermined pressure difference between an upstream and a downstream of the valve.
Claim 19
Dependent Claim
15 words
The medical stent according to claim 13 , wherein the valve is a one-way valve.
Claim 20
Dependent Claim
32 words
The medical stent according to claim 13 , wherein the extended wires forming the valve are curled inwards so as to form generally convex shapes relative to an interior of the valve.
Claim 21
Dependent Claim
31 words
The medical stent according to claim 13 , wherein the extended wires forming the valve have a straight portion and a bend inwards at a predetermined location of the extended wires.
Claim 22
Dependent Claim
29 words
The medical stent according to claim 13 , wherein the extended wires forming the valve are curled so that middle portions of the extended wires converge toward each other.
Claim 23
Dependent Claim
28 words
The medical stent according to claim 13 , wherein the stent is an esophageal stent being sized and configured to be placed in an esophagus of a patient.
Claim 24
Dependent Claim
38 words
The medical stent according to claim 13 , wherein the stent is configured to be placed in an esophagus of a patient, and wherein the predetermined condition is a passage of food from the esophagus into the stomach.
Claim 25
Dependent Claim
40 words
The medical stent according to claim 13 , wherein the stent is configured to be placed in an esophagus of a patient, and wherein the predetermined condition is a vomiting of a stomach content from the stomach to the esophagus.
Claim 26
Dependent Claim
98 words
A medical stent having a valve, comprising: a generally tubular body formed of braided wires and having a proximal end portion and a distal end portion; and a normally closed valve formed of non-braided wires extended from the braided wires of the tubular body, the non-braided wires being curled inwardly so as to form wires having a convex shape relative to an interior of the valve, wherein the valve is configured to open in response to a predetermined condition, wherein a valved end of the valve includes an opening when the valve is in a normally closed position.
Claim 27
Dependent Claim
98 words
A medical stent having a valve, comprising: a generally tubular body formed of braided wires and having a proximal end portion and a distal end portion; and a normally closed valve formed of non-braided wires extended from the braided wires of the tubular body, the non-braided wires being curled inwardly so as to form wires having a convex shape relative to an interior of the valve, wherein the valve is configured to open in response to a predetermined condition, wherein a valved end of the valve includes an opening when the valve is in a normally closed position.
Claim 28
Dependent Claim
24 words
The medical stent according to claim 24 , wherein at least a portion of the tubular body and valve is provided with a covering.
Claim 29
Dependent Claim
24 words
The medical stent according to claim 25 , wherein the material for the covering is selected from a group of polyurethane, polytetrafluoroethylene, and silicone.
Claim 30
Dependent Claim
26 words
The medical stent according to claim 24 , wherein the predetermined condition is a predetermined pressure difference between an upstream and a downstream of the valve.
Claim 31
Dependent Claim
15 words
The medical stent according to claim 24 , wherein the valve is a one-way valve.
Claim 32
Dependent Claim
38 words
The medical stent according to claim 24 , wherein the stent is configured to be placed in an esophagus of a patient, and wherein the predetermined condition is a passage of food from the esophagus into the stomach.
Claim 33
Dependent Claim
40 words
The medical stent according to claim 24 , wherein the stent is configured to be placed in an esophagus of a patient, and wherein the predetermined condition is a vomiting of a stomach content from the stomach to the esophagus.
Claim 34
Dependent Claim
121 words
A medical esophageal stent having a valve, comprising: a generally tubular body formed of braided wires and having a proximal end portion and a distal end portion, the tubular body having a generally tapered body and being sized and configured to be placed in an esophagus of a patient; and a normally closed valve formed of non-braided wires extended from the braided wires of the tubular body, the non-braided wires being curled inwardly so as to form wires having a convex shape relative to an interior of the valve, wherein the valve is configured to open in response to a predetermined condition, wherein a valved end of the valve includes an opening when the valve is in a normally closed position.
Claim 35
Dependent Claim
121 words
A medical esophageal stent having a valve, comprising: a generally tubular body formed of braided wires and having a proximal end portion and a distal end portion, the tubular body having a generally tapered body and being sized and configured to be placed in an esophagus of a patient; and a normally closed valve formed of non-braided wires extended from the braided wires of the tubular body, the non-braided wires being curled inwardly so as to form wires having a convex shape relative to an interior of the valve, wherein the valve is configured to open in response to a predetermined condition, wherein a valved end of the valve includes an opening when the valve is in a normally closed position.
Claim 36
Dependent Claim
25 words
The medical esophageal stent according to claim 31 , wherein at least a portion of the tubular body and valve is provided with a covering.
Claim 37
Dependent Claim
25 words
The medical esophageal stent according to claim 32 , wherein the material for the covering is selected from a group of polyurethane, polytetrafluoroethylene, and silicone.
Claim 38
Dependent Claim
27 words
The medical esophageal stent according to claim 31 , wherein the predetermined condition is a predetermined pressure difference between an upstream and a downstream of the valve.
Claim 39
Dependent Claim
24 words
The medical esophageal stent according to claim 31 , wherein the predetermined condition is a passage of food from the esophagus into the stomach.
Claim 40
Dependent Claim
24 words
The medical esophageal stent according to claim 31 , wherein the predetermined condition is a passage of food from the esophagus into the stomach.
Claim 41
Dependent Claim
26 words
The medical esophageal stent according to claim 31 , wherein the predetermined condition is a vomiting of a stomach content from the stomach to the esophagus.
Claim 42
Dependent Claim
101 words
A medical esophageal stent having a valve, comprising: a generally tubular body formed of braided wires and having a proximal end portion and a distal end portion, the tubular body being sized and configured to be placed in an esophagus of a patient; and a normally closed valve formed integral to the distal end portion of the tubular body, wherein the valve is configured to open in response to a predetermined condition, wherein a valved end of the valve includes an opening when the valve is in a normally closed position, and wherein the valve is made of an elastomeric material.
Claim 43
Dependent Claim
101 words
A medical esophageal stent having a valve, comprising: a generally tubular body formed of braided wires and having a proximal end portion and a distal end portion, the tubular body being sized and configured to be placed in an esophagus of a patient; and a normally closed valve formed integral to the distal end portion of the tubular body, wherein the valve is configured to open in response to a predetermined condition, wherein a valved end of the valve includes an opening when the valve is in a normally closed position, and wherein the valve is made of an elastomeric material.
Claim 44
Dependent Claim
18 words
The medical esophageal stent according to claim 38 , wherein the tubular body has a generally tapered body.
Claim 45
Dependent Claim
25 words
The medical esophageal stent according to claim 38 , wherein at least a portion of the tubular body and valve is provided with a covering.
Claim 46
Dependent Claim
25 words
The medical esophageal stent according to claim 40 , wherein the material for the covering is selected from a group of polyurethane, polytetrafluoroethylene, and silicone.
Claim 47
Dependent Claim
27 words
The medical esophageal stent according to claim 38 , wherein the predetermined condition is a predetermined pressure difference between an upstream and a downstream of the valve.
Claim 48
Dependent Claim
24 words
The medical esophageal stent according to claim 38 , wherein the predetermined condition is a passage of food from the esophagus into the stomach.
Claim 49
Dependent Claim
26 words
The medical esophageal stent according to claim 38 , wherein the predetermined condition is a vomiting of a stomach content from the stomach to the esophagus.
Claim 50
Dependent Claim
17 words
The medical esophageal stent according to claim 38 , wherein the elastomeric valve is a gasket valve.
Claim 51
Dependent Claim
17 words
The medical esophageal stent according to claim 38 , wherein the opening includes at least one slit.
Claim 52
Dependent Claim
73 words
A medical stent having a valve, comprising: a generally tubular body formed of braided wires and having a proximal end portion and a distal end portion; and a normally closed valve formed integral to the distal end portion of the tubular body, the valve including a valved end having an opening when the valve is in a normally closed position, wherein the valve is configured to open in response to a predetermined condition.
Claim 53
Dependent Claim
73 words
A medical stent having a valve, comprising: a generally tubular body formed of braided wires and having a proximal end portion and a distal end portion; and a normally closed valve formed integral to the distal end portion of the tubular body, the valve including a valved end having an opening when the valve is in a normally closed position, wherein the valve is configured to open in response to a predetermined condition.
Claim 54
Dependent Claim
17 words
The medical stent according to claim 47 , wherein the tubular body has a generally tapered body.
Claim 55
Dependent Claim
25 words
The medical stent according to claim 47 , wherein the tubular body is sized and configured to be placed in an esophagus of a patient.
Claim 56
Dependent Claim
25 words
The medical stent according to claim 47 , wherein the valve is formed of non-braided wires extended from the braided wires of the tubular body.
Claim 57
Dependent Claim
31 words
The medical stent according to claim 50 , wherein the non-braided wires are curled inwardly so as to form wires having a convex shape relative to an interior of the valve.
Claim 58
Dependent Claim
31 words
The medical stent according to claim 50 , wherein the non-braided wires forming the valve have a straight portion and a bend inwards at a predetermined location of the extended wires.
Claim 59
Dependent Claim
29 words
The medical stent according to claim 50 , wherein the non-braided wires forming the valve are curled so that middle portions of the extended wires converge toward each other.
Claim 60
Dependent Claim
24 words
The medical stent according to claim 50 , wherein at least a portion of the tubular body and valve is provided with a covering.
Claim 61
Dependent Claim
24 words
The medical stent according to claim 54 , wherein the material for the covering is selected from a group of polyurethane, polytetrafluoroethylene, and silicone.
Claim 62
Dependent Claim
26 words
The medical stent according to claim 47 , wherein the predetermined condition is a predetermined pressure difference between an upstream and a downstream of the valve.
Claim 63
Dependent Claim
17 words
The medical stent according to claim 47 , wherein the valve is made of an elastomeric material.
Claim 64
Dependent Claim
16 words
The medical stent according to claim 57 , wherein the elastomeric valve is a gasket valve.
Claim 65
Dependent Claim
16 words
The medical stent according to claim 57 , wherein the opening includes at least one slit.
Claim 66
Dependent Claim
38 words
The medical stent according to claim 47 , wherein the stent is configured to be placed in an esophagus of a patient, and wherein the predetermined condition is a passage of food from the esophagus into the stomach.
Claim 67
Dependent Claim
40 words
The medical stent according to claim 47 , wherein the stent is configured to be placed in an esophagus of a patient, and wherein the predetermined condition is a vomiting of a stomach content from the stomach to the esophagus.
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 2007-09-14 | 2008-03-15 | 2008-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2011-09-14 | 2012-03-15 | 2012-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2015-09-14 | 2016-03-15 | 2016-09-14 | $7700.00 | Window Closed / Lapsed |