Implantable medical devices with photocurable feedthrough potting adhesives and methods of manufacture
OwnerYangbin Chen, Dena A. Laramyinventors
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Abstract
An implantable medical device with a photocurable liquid feedthrough potting adhesive and a feedthrough potting adhesive formed therefrom, and methods of making the same are provided. The feedthrough potting adhesive bonds a feedthrough pin within a feedthrough ferrule of the implantable medical device. The feedthrough potting adhesive includes a polyether polymer formed by reacting ingredients including a prepolymer compound, a cross-linking agent, a photoinitiator, and a hydrophobic polyol.
Claims20
An implantable medical device feedthrough assembly comprising:
- a feedthrough ferrule;
- and
- a feedthrough potting adhesive in the feedthrough ferrule, the feedthrough potting adhesive comprising a polyether polymer formed by reacting ingredients including:
- a photoinitiator;
- a hydrophobic polyol;
- a cross-linking agent;
- and
- a prepolymer compound including segments of the following formula:
- wherein X1 is an epoxide, a glycidyl ether, an oxetane, or a photoinitiated ring-opening cyclic ether;
- wherein X2 is an epoxide, a glycidyl ether, an oxetane, a photoinitiated ring-opening cyclic ether, or a hydrogen;
- and
- wherein R is an organic group.
A feedthrough potting adhesive comprising:
- a polyether polymer formed by reacting ingredients including:
- a photoinitiator;
- a hydrophobic polyol;
- a cross-linking agent;
- and
- a prepolymer compound including segments of the following formula:
- wherein X1 is an epoxide, a glycidyl ether, an oxetane, or a photoinitiated ring-opening cyclic ether;
- wherein X2 is an epoxide, a glycidyl ether, an oxetane, a photoinitiated ring-opening cyclic ether, or a hydrogen;
- and
- wherein R is an organic group.
A method for forming an implantable medical device, the method comprising:
- bonding a feedthrough pin within a ferrule with a feedthrough potting adhesive, the feedthrough potting adhesive comprising a polyether polymer formed by reacting ingredients including:
- a photoinitiator;
- a hydrophobic polyol;
- a cross-linking agent;
- and
- a prepolymer compound including segments of the following formula:
- wherein X1 is an epoxide, a glycidyl ether, an oxetane, or a photoinitiated ring-opening cyclic ether;
- wherein X2 is an epoxide, a glycidyl ether, an oxetane, a photoinitiated ring-opening cyclic ether, or a hydrogen;
- and
- wherein R is an organic group;
- and
- curing the feedthrough potting adhesive.
Dependencies are inferred from the claim text.