Mueller Medical Instruments is selling a stake in its largest company to private equity firm after Mueller Medical’s medical equipment sales collapsed amid a $100 billion debt crisis.

Recode is reporting that Mueller Medical has sold a stake of more than a third of its medical equipment business to a private equity company.

This comes as the medical device maker has struggled to find new revenue sources following a $300 million debt crisis, and amid an ongoing government investigation into whether Russian operatives hacked the Democratic National Committee.

The Washington Post reported on Wednesday that the company is selling the stake in Mueller Medical to a consortium of private equity firms.

Mueller Medical currently makes more than $5 billion a year in revenue.

The sale follows a similar sale to a venture capital firm in November.