Patients who receive frequent intravenous injections to treat chronic illness typically endure arduous hospital visits. A new device could change that. SpringLeaf Therapeutics is developing a drug-filled patch patients can attach to their skin to dispense such medications. "You just put it on and do your daily activities," said Frank Bobe, CEO of SpringLeaf. "You're in control because you don't give control of your life to a nurse or physician, which, psychologically, brings a huge positive impact to patients." On Friday the company announced the completion of its second major round of funding after receiving a $4 million boost from Excel Venture Management, a venture capital firm, bringing its total funding to $19 million. That second round comes mainly from SR One, the venture capital arm of GlaxoSmithKline.