Invention Grant
- Patent Title: Coated tubular construct for biological and industrial applications and method of making a tubular construct
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Application No.: US17672924Application Date: 2022-02-16
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Publication No.: US12030256B2Publication Date: 2024-07-09
- Inventor: Rohit Bhargava , Lin Chen
- Applicant: THE BOARD OF TRUSTEES OF THE UNIVERSITY OF ILLINOIS
- Applicant Address: US IL Urbana
- Assignee: THE BOARD OF TRUSTEES OF THE UNIVERSITY OF ILLINOIS
- Current Assignee: THE BOARD OF TRUSTEES OF THE UNIVERSITY OF ILLINOIS
- Current Assignee Address: US IL Urbana
- Agency: Crowell & Moring LLP
- Main IPC: B29C64/40
- IPC: B29C64/40 ; A61L27/16 ; B29C64/118 ; B29C64/209 ; B33Y40/20 ; B33Y70/10 ; B33Y80/00 ; C08F2/50 ; C08F22/10 ; B29K105/00 ; B29L31/18 ; B33Y10/00

Abstract:
A coated tubular construct for biological and industrial applications includes a plurality of channels, where each channel is radially surrounded by a wall comprising a first polymer, and a conformal coating comprising a second polymer is disposed on an outer and/or an inner surface of each wall. A method of producing a tubular construct includes 3D printing a template structure comprising a sacrificial material and a photoinitiator, and immersing the template structure in a first prepolymer solution comprising a first prepolymer and a co-initiator. During the immersion, the template structure is exposed to light, and the first prepolymer undergoes radical polymerization to conformally coat the template structure with the first polymer, forming a coated template. The sacrificial material is removed from the coated template, and a tubular construct comprising the first polymer is formed.
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