Electrospun cell matrices
First Claim
1. An electrospun tubular composite matrix for use as a vascular construct comprising electrospun polycaprolactone and at least one electrospun natural component, wherein the matrix has a three-dimensional ultrastructure of interconnected polycaprolactone and natural component fibers with an average diameter from 50 nanometers to 800 nanometers and pores to permit cell attachment and differentiation into a tissue layer and sufficient mechanical burst strength to withstand pressure up to 1,425 mmHg.
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Abstract
The invention is directed to compositions and methods for preparing electrospun matrices comprising at least one natural biological material component and at least one synthetic polymer material. The natural component makes the matrices highly biocompatible while the molecular weight polymer component can impart additional strength mechanical strength to the scaffold and/or improve ease of manufacture by increasing viscosity and spinning characteristics of the solution during electrospining.
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Citations
18 Claims
- 1. An electrospun tubular composite matrix for use as a vascular construct comprising electrospun polycaprolactone and at least one electrospun natural component, wherein the matrix has a three-dimensional ultrastructure of interconnected polycaprolactone and natural component fibers with an average diameter from 50 nanometers to 800 nanometers and pores to permit cell attachment and differentiation into a tissue layer and sufficient mechanical burst strength to withstand pressure up to 1,425 mmHg.
- 8. An electrospun tubular composite matrix for use as a vascular construct comprising 25% to 75% of electrospun polycaprolactone and at least one electrospun natural component, wherein the matrix has a three-dimensional ultrastructure of interconnected polycaprolactone and natural component fibers with an average diameter from 50 nanometers to 800 nanometers and pores to permit cell attachment and differentiation into a tissue layer and sufficient mechanical burst strength to withstand pressure up to 1,425 mmHg.
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12. A method of preparing an electrospun tubular matrix for use as a vascular construct, comprising:
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electrically charging a solution comprising polycaprolactone and at least one natural component; and discharging the electrically charged solution onto a grounded target under an electrostatic field such that movement of the electrically charged solution under the electric field causes the electrically charged solution to evaporate and produce fibers of the matrix on the grounded target, wherein the matrix has a three-dimensional ultrastructure of interconnected polycaprolactone and natural component fibers with an average diameter from 50 nanometers to 800 nanometers and pores to permit cell attachment and differentiation into a tissue layer and sufficient mechanical burst strength to withstand pressure up to 1,425 mmHg. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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Specification