Anastomosis Device
First Claim
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1. The anastomosis device for use in forming a graft between at least two body vessels comprising:
- a body member for engaging the luminal walls of said body vessels formed to define a main leg with an elongate main chamber having at least first and second spaced open ends and a central longitudinal axis extending between said first and second open ends, said body member including a first tubular collar defining said first open end of said body member, a second tubular collar defining said second open end of said body member, said first and second collars being formed of thermal shape memory material having a temperature transformation level wherein at a temperature above which said first and second collars assume a first predetermined expanded configuration and become relatively rigid, and wherein at a temperature below which said first and second collars become pliable and are collapsible inwardly toward said central longitudinal axis to a second collapsed configuration, and a first flexible tubular section formed of flexible, fluid impervious, body vessel compatible material extending between said first and second collars, said first flexible tubular section having a first end connected to said first collar and a second end connected to said second collar to form therewith said elongate main chamber, said first and second collars being operative in said first expanded configuration to each contact the luminal wall of a body vessel, said first and second collars being made of a material more rigid than said first flexible tubular section material in the expanded configuration of said first and second collars to form a body member with relatively rigid ends joined by the first flexible tubular section, and a unitary branch leg secured to and extending angularly outward from said main leg between said first and second collars, said branch leg including a third tubular collar defining an open end of said branch leg and a second flexible tubular section having an outer end secured to said third collar and an inner end secured to said first flexible tubular section and opening into said first flexible tubular section, said second flexible tubular section being formed of flexible, fluid impervious, body vessel compatible, material and with said third collar defining an elongate, open ended branch chamber with an end opening into said main chamber, said third collar being formed of thermal shape memory material having a temperature transformation level wherein at a temperature above which said third collar assumes a third predetermined expanded configuration and becomes relatively rigid, and at a temperature below which said third collar becomes pliable and collapsible inwardly to a fourth collapsed configuration, said third collar being operative in said third expanded configuration to contact the luminal wall of a second body vessel, said third collar being made of material more rigid than said second flexible tubular section material in the third expanded configuration to form a body member with three relatively rigid ends joined by the first and second flexible tubular sections when said first and second tubular collars are in the first expanded configuration and said third tubular collar is in the third expanded configuration.
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Abstract
A unitary anastomosis device for use in forming a graft between two body members is provided which includes a body member of fluid impervious vessel compatible material formed to define at least one elongate chamber having at least two spaced open ends. The outer surface of the body member carries a bio-adhesive which bonds the body member to the luminal walls of two vessels to be joined when the body member is expanded into contact with the vessel luminal walls.
301 Citations
15 Claims
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1. The anastomosis device for use in forming a graft between at least two body vessels comprising:
a body member for engaging the luminal walls of said body vessels formed to define a main leg with an elongate main chamber having at least first and second spaced open ends and a central longitudinal axis extending between said first and second open ends, said body member including a first tubular collar defining said first open end of said body member, a second tubular collar defining said second open end of said body member, said first and second collars being formed of thermal shape memory material having a temperature transformation level wherein at a temperature above which said first and second collars assume a first predetermined expanded configuration and become relatively rigid, and wherein at a temperature below which said first and second collars become pliable and are collapsible inwardly toward said central longitudinal axis to a second collapsed configuration, and a first flexible tubular section formed of flexible, fluid impervious, body vessel compatible material extending between said first and second collars, said first flexible tubular section having a first end connected to said first collar and a second end connected to said second collar to form therewith said elongate main chamber, said first and second collars being operative in said first expanded configuration to each contact the luminal wall of a body vessel, said first and second collars being made of a material more rigid than said first flexible tubular section material in the expanded configuration of said first and second collars to form a body member with relatively rigid ends joined by the first flexible tubular section, and a unitary branch leg secured to and extending angularly outward from said main leg between said first and second collars, said branch leg including a third tubular collar defining an open end of said branch leg and a second flexible tubular section having an outer end secured to said third collar and an inner end secured to said first flexible tubular section and opening into said first flexible tubular section, said second flexible tubular section being formed of flexible, fluid impervious, body vessel compatible, material and with said third collar defining an elongate, open ended branch chamber with an end opening into said main chamber, said third collar being formed of thermal shape memory material having a temperature transformation level wherein at a temperature above which said third collar assumes a third predetermined expanded configuration and becomes relatively rigid, and at a temperature below which said third collar becomes pliable and collapsible inwardly to a fourth collapsed configuration, said third collar being operative in said third expanded configuration to contact the luminal wall of a second body vessel, said third collar being made of material more rigid than said second flexible tubular section material in the third expanded configuration to form a body member with three relatively rigid ends joined by the first and second flexible tubular sections when said first and second tubular collars are in the first expanded configuration and said third tubular collar is in the third expanded configuration. - View Dependent Claims (10, 15)
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2. An anastomosis device for use in forming a graft between at least two body vessels comprising:
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a body member for engaging the luminal walls of said body vessels formed to define at least one elongate main chamber having at least first and second spaced open ends and a central longitudinal axis extending between said first and second open ends, said body member including a first tubular collar defining said first open end of said body member, a second tubular collar defining said second open end of said body member, and a tubular section formed of flexible, fluid impervious, body vessel compatible material having a first end connected to said first collar and a second end connected to said second collar, said first and second collars being operative to assume a first expanded configuration to each contact the luminal wall of a body vessel and a second collapsed configuration inwardly toward said central longitudinal axis, said first and second collars being more rigid than said flexible section in the expanded configuration, said first and second collars forming a main leg, said body member further including a branch leg secured to and extending angularly outward from said main leg, said branch leg including a third collar defining an open end of said branch leg and a second tubular section having an outer end secured to said third collar and an inner end secured to said first tubular section and opening into said first tubular section, said second tubular section being formed of flexible, fluid impervious, body vessel compatible material and with said third collar, defining an elongate, open ended branch chamber with an end opening into said main chamber, said third collar being operative to assume a first expanded configuration to contact the luminal wall of a body vessel and a second collapsed configuration inwardly of said first expanded configuration, said first, second and third collars being formed of thermal shape memory material having a temperature transformation level above which the collar assumes said first expanded configuration and below which the collar is collapsible to said second collapsed configuration, the temperature transformation level of said third collar being different from the temperature transformation level of said first and second collars.
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3. A device adapted to engage the luminal walls of a main body vessel and a branch body vessel extending from said main body vessel comprising:
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a skeletal frame formed of thermal shape memory material having at least one temperature transformation level above which said skeletal frame assumes a first expanded configuration and becomes relatively rigid and below which said skeletal frame becomes pliable and is collapsed to a second collapsed configuration, said skeletal frame having an elongate main leg formed to define an elongate, open ended main chamber and a branch leg connected to and extending angularly from said main leg and formed to define a branch chamber having a first open end opening into said main chamber and a second open end spaced therefrom, the main chamber having a central longitudinal axis extending between the open ends thereof and the branch chamber having a central longitudinal axis extending between the first and second ends thereof at an angle to the longitudinal axis of the main chamber, said main leg being formed to define a plurality of interconnected open cells, each of said cells including two substantially parallel straight side portions which are substantially parallel to the central longitudinal axis of said main chamber and end walls extending between said straight side portions at an angle to the central longitudinal axis of said main chamber and said branch leg being formed to define a plurality of interconnected open cells, each of said cells including two substantially parallel straight side portions which are substantially parallel to the central longitudinal axis of said branch chamber and end wall means extending between said straight side portions at an angle to the central longitudinal axis of said branch chamber the interconnected open cells of one of said main or branch legs being larger than the interconnected open cells of the remaining legs. - View Dependent Claims (8, 11, 12, 13, 14)
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4. A device adapted to engage the luminal walls of a main body vessel and a branch body vessel extending from said main body vessel comprising:
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a skeletal frame having an elongate main leg formed to define an elongate, open ended main chamber and a branch leg connected to and extending angularly from said main leg and formed to define a branch chamber having a first open end opening into said main chamber and a second open end spaced therefrom, the main chamber having a central longitudinal axis extending between the open ends thereof and the branch chamber having a central longitudinal axis extending between the first and second ends thereof at an angle to the longitudinal axis of the main chamber, said main leg being formed to define a plurality of interconnected open cells, each of said cells including two substantially parallel straight side portions which are substantially parallel to the central longitudinal axis of said main chamber and end walls extending between said straight side portions at an angle to the central longitudinal axis of said main chamber and said branch leg being formed to define a plurality of interconnected open cells, each of said cells including two substantially parallel straight side portions which are substantially parallel to the central longitudinal axis of said branch chamber and end wall means extending between said straight side portions at an angle to the central longitudinal axis of said branch chamber, the interconnected open cells of said main leg being larger than the interconnected open cells of said branch leg.
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5. A device adapted to engage the luminal walls of a main body vessel and a branch body vessel extending from said main body vessel comprising:
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a skeletal frame having an elongate main leg formed to define an elongate, open ended main chamber and a branch leg connected to and extending angularly from said main leg and formed to define a branch chamber having a first open end opening into said main chamber and a second open end spaced therefrom, the main chamber having a central longitudinal axis extending between the open ends thereof and the branch chamber having a central longitudinal axis extending between the first and second ends thereof at an angle to the longitudinal axis of the main chamber, said main leg being formed to define a plurality of interconnected open cells, each of said cells including two substantially parallel straight side portions which are substantially parallel to the central longitudinal axis of said main chamber and end walls extending between said straight side portions at an angle to the central longitudinal axis of said main chamber and said branch leg being formed to define a plurality of interconnected open cells, each of said cells including two substantially parallel straight side portions which are substantially parallel to the central longitudinal axis of said branch chamber and end wall means extending between said straight side portions at an angle to the central longitudinal axis of said branch chamber, the cells of said main leg being joined together only along the straight side portions thereof and the cells of said branch leg being joined together only along the straight side portions thereof, said skeletal frame being operative to assume a first expanded configuration to cause said main and branch legs to engage the luminal walls of said body vessels and a second collapsed configuration to collapse said main and branch legs toward and adjacent to the longitudinal central axes of the main and branch chambers respectively, the end wall means of each cell in said main and branch legs operating to cause the space between the straight side portions of the cell to increase to expand the skeletal frame from said second collapsed configuration to said first expanded configuration and to cause the space between the straight side portions of the cell to decrease in order to collapse the skeletal frame from said first expanded configuration to said second collapsed configuration, the skeletal frame being formed of shape memory material having at least one temperature transformation level above which said skeletal frame assumes said first expanded configuration and below which said skeletal frame is collapsible to said second collapsed configuration, the temperature transformation level of the skeletal frame in said main leg being different from the temperature transformation level in the branch leg of said skeletal frame.
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6. The anastomosis device for use in forming a graft between at least two body vessels comprising:
a body member for engaging the luminal walls of said body vessels formed to define a main leg with an elongate main chamber having at least first and second spaced open ends and a central longitudinal axis extending between said first and second open ends, said body member including a first tubular collar defining said first open end of said body member, a second tubular collar defining said second open end of said body member, said first and second collars being formed of thermal shape memory material having a temperature transformation level wherein at a temperature above which said first and second collars assume a first predetermined expanded configuration and become relatively rigid, and wherein at a temperature below which said first and second collars become pliable and are collapsible inwardly toward said central longitudinal axis to a second collapsed configuration, and a first flexible tubular section formed of flexible, fluid impervious, body vessel compatible material extending between said first and second collars, said flexible tubular section having a first end connected to said first collar and a second end connected to said second collar to form therewith said elongate main chamber, said first and second collars being operative in said first expanded configuration to each contact the luminal wall of a body vessel, said first and second collars being more rigid than said first flexible tubular section in the expanded configuration of said first and second collars to form a body member with relatively rigid ends joined by the first flexible tubular section, said body member including an outer surface and a bio-adhesive and an encapsulated bio-adhesive activator are carried on said outer surface.
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7. A device adapted to engage the luminal walls of a main body vessel and a branch body vessel extending from said main body vessel comprising:
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a skeletal frame having an elongate main leg formed of a plurality of interconnected open cells and configured to define an elongate, open ended main chamber and a branch leg connected to and extending angularly from said main leg and formed of a plurality of interconnected open cells and configured to define a branch chamber having a first open end opening into said main chamber and a second open end spaced therefrom, the main chamber having a central longitudinal axis extending between the open ends thereof and the branch chamber having a central longitudinal axis extending between the first and second ends thereof at an angle to the longitudinal axis of the main chamber, said skeletal frame being formed of shape memory material which is operative above a temperature transformation level to assume a first expanded configuration and below said temperature transformation level to assume a second collapsed configuration where said main and branch legs are collapsed toward the respective longitudinal axes thereof, the temperature transformation level of the skeletal frame in said main leg being different from the temperature transformation level in the branch leg of said skeletal frame. - View Dependent Claims (9)
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Specification