Stem cell capture and immobilization coatings for medical devices and implants
First Claim
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1. A method of constructing a target cell-carrying medical implant device, said method comprising the steps of:
- a. providing a porous biocompatible medical implant comprising a solid exterior surface having a plurality of pores;
b. providing a solution comprised of the following components;
(i) a non-polar liquid, (ii) a polar liquid and (ii) a plurality of amphiphilic molecules composed of hydrophobic tail ends and hydrophilic head ends, wherein said head ends have a binding affinity for one or more target cells, further wherein said solution components assemble into non-polar-liquid-filled micelles or micelle-like constructs;
c. contacting said micelles or micelle-like constructs with a solution containing target cells to which the hydrophilic head ends of said amphiphilic molecules have a binding affinity and inducing said micelles or micelle-like constructs to bind said target cells and form micelle-target cell units; and
d. introducing said micelle-target cell units into the pores of said implant exterior surface so as to yield a medical implant device having target cells immobilized within said exterior surface pores.
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Abstract
Constructs and methods for immobilizing stem and other precursor cells, as well as other bioactive materials of therapeutic value on the surfaces of medical devices, such as bone, cartilage, spinal and tooth implants, are described herein. The present invention has broad application in the incorporation of bioactive and therapeutic materials in or on a medical implant or other interventional device, having particular value in enabling the real-time, utilization by medical personnel of bioactive materials extracted from the patient and subsequently reintroduced and immobilized in an implant device.
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Citations
10 Claims
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1. A method of constructing a target cell-carrying medical implant device, said method comprising the steps of:
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a. providing a porous biocompatible medical implant comprising a solid exterior surface having a plurality of pores; b. providing a solution comprised of the following components;
(i) a non-polar liquid, (ii) a polar liquid and (ii) a plurality of amphiphilic molecules composed of hydrophobic tail ends and hydrophilic head ends, wherein said head ends have a binding affinity for one or more target cells, further wherein said solution components assemble into non-polar-liquid-filled micelles or micelle-like constructs;c. contacting said micelles or micelle-like constructs with a solution containing target cells to which the hydrophilic head ends of said amphiphilic molecules have a binding affinity and inducing said micelles or micelle-like constructs to bind said target cells and form micelle-target cell units; and d. introducing said micelle-target cell units into the pores of said implant exterior surface so as to yield a medical implant device having target cells immobilized within said exterior surface pores. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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