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USD Inventor Patents New Method for Drug Injection

Biomedical engineering gMP Students work in the USD Discovery District's current good manufacuring practice lab.

VERMILLION, S.D. – The United States Patent and Trademark Office has granted the University of South Dakota two patents for a new biopolymer drug loading method.

The lead inventor is Daisy Deng, Ph.D., from USD’s biomedical engineering department.

The technology relates to the field of oxygen generating microparticles containing biodegradable thermo-responsive hydrogels and methods for their use. The invention covers a process of making an injectable oxygen-generating scaffold, as well as a method used for regenerating lost bone and damaged tissue.
It is an inexpensive new method to load a wide range of drugs into a polymer that can be implanted and absorbed into the human body. It also has the advantage of slowly releasing the drugs to prolong the function period and can be loaded at room temperature.


USD's College of Arts & Sciences offers students a top-notch undergraduate liberal arts education in the humanities, social sciences and sciences as well as graduate programs that have earned USD distinction as a research university by the Carnegie Foundation. The college's more than 22,000 alumni include famous journalists, Hollywood screenwriters, novelists, a Nobel Prize winner, South Dakota governors, attorneys, physicians, justices of the state Supreme Court, distinguished university faculty and international humanitarians.


Founded in 1862 and the first university in the Dakotas, the University of South Dakota is the only public liberal arts university in the state, with 202 undergraduate and 84 graduate programs in the College of Arts & Sciences, School of Education, Knudson School of Law, Sanford School of Medicine, School of Health Sciences, Beacom School of Business and College of Fine Arts. With an enrollment of nearly 10,000 students and more than 400 faculty, USD has a 16:1 student/faculty ratio, and it ranks among the best in academics and affordability. USD’s 18 athletic programs compete at the NCAA Division I level.


Hanna DeLange
USD News