Question: MAKO Surgical Corp accepted a deal from Stryker for what amount?

Context paragraphs:
Bachelor of Science in Nursing: The Bachelor of Science in Nursing (BSN, BScN) also known in some countries as a Bachelor of Nursing (BN) or Bachelor of Science (BS) with a Major in Nursing is an academic degree in the science and principles of nursing, granted by an accredited tertiary education provider.  The course of study is typically three or four years.  The difference in degree designation may relate to the amount of basic science courses required as part of the degree, with BScN and BSN degree curriculums requiring completion of more courses on math and natural sciences that are more typical of BSc degrees (e.g. calculus, physics, chemistry, biology) and BN curriculums more focused on nursing theory, nursing process, and teaching versions of general science topics that are adapted to be more specific and relevant to nursing practice.  Nursing school students are generally required to take courses in social and behavioral sciences and liberal arts, including nutrition, anatomy, chemistry, mathematics, and English.  In addition to those courses, experience in physical and social sciences, communication, leadership, and critical thinking is required for a bachelor's degree.  BSN programs typically last 3-4 years.  With a BSN you can work in private medical and surgical hospital, a physician's office, public medical and surgical hospitals, home health care services, and nursing facilities.  Having a BSN can result in more opportunities and better salary than just an associate degree.

Minimally invasive glaucoma surgery: Micro-invasive glaucoma surgery (MIGS) is the latest advance in surgical treatment for glaucoma, which aims to reduce intraocular pressure by either increasing outflow of aqueous humor or reducing its production.  MIGS comprises a group of surgical procedures which share common features.  MIGS procedures involve a minimally invasive approach, often with small cuts or micro-incisions through the cornea that causes the least amount of trauma to surrounding scleral and conjunctival tissues.  The techniques minimize tissue scarring, allowing for the possibility of traditional glaucoma procedures such as trabeculectomy or glaucoma valve implantation (also known as glaucoma drainage device) to be performed in the future if needed.

Zanvyl Krieger: Zanvyl Krieger (April 1, 1906 — September 15, 2000) was an American businessman and philanthropist in Baltimore, Maryland.  He was best known for his philanthropy, including major donations to the Johns Hopkins University and the Kennedy Krieger Institute.  Krieger amassed his fortune through an investment in U.S. Surgical Corp, which manufactured surgical staples.

Frederic Moll: Dr. Frederic Moll co-founded Intuitive Surgical with John Freund and Rob Younge, and was Founder & CEO of Hansen Medical.  He was a board member of Mako Surgical until its sale in 2013.  During his surgical residency, he invented the safety trocar, which helped make general laparoscopic surgery possible.  Dr. Moll is currently the founder, Chairman and CEO of Auris Surgical Robotics.

MAKO Surgical Corp.: MAKO Surgical Corp. was a publicly traded medical device company based in Florida.  On September 25, 2013, the Board of Directors of Mako Surgical accepted a deal to be acquired by Stryker for $1.65B.  The deal closed in December 2013.

Proctocolectomy: Proctocolectomy is the surgical removal of the rectum and all or part of the colon.  It is a most widely accepted surgical method for ulcerative colitis and Familial adenomatous polyposis (FAP).

Ovarian drilling: Ovarian drilling, also known as multiperforation or laparoscopic ovarian diathermy, is a surgical technique of puncturing the membranes surrounding the ovary with a laser beam or a surgical needle using minimally invasive laparoscopic procedures.  It differs from ovarian wedge resection, because resection involves the cutting of tissue.  Minimally invasive ovarian drilling procedures have replaced wedge resections.  Ovarian drilling is preferred to wedge resection because cutting in to the ovary can cause adhesions which may complicate postoperative outcomes.  Ovarian drilling and ovarian wedge resection are treatment options to reduce the amount of androgen producing tissue in women with Polycystic Ovarian Syndrome (PCOS).  PCOS is the primary cause of anovulation, which results in female infertility.  The induction of mono-ovulatory cycles can restore fertility.

Barrett Technology: Newton, Massachusetts, USA-based Barrett Technology was incorporated by William T. Townsend in 1990.  Barrett manufactures robotic arms and hands installed in 20 countries on 6 continents.  Barrett is credited in "The Guinness Book of World Records, Millennium Edition", as maker of the world’s “most advanced robotic arm.”  Its 7-axis robotic arm, named the WAM arm for Whole Arm Manipulation is based on Puck electronics and mechanical drive technologies and designed to interact directly with people.  One application of an early version of the technology has been the arm manufactured and sold by MAKO Surgical Corp. which enables haptically-guided minimally-invasive knee surgery.

Stryker Corporation: Stryker Corporation () is a Fortune 500 medical technologies firm based in Kalamazoo, Michigan.  Stryker's products include implants used in joint replacement and trauma surgeries; surgical equipment and surgical navigation systems; endoscopic and communications systems; patient handling and emergency medical equipment; neurosurgical, neurovascular and spinal devices; as well as other medical device products used in a variety of medical specialties.

MAKOplasty: MAKOplasty is a surgical procedure for partial knee or total hip arthroplasty using a RIO Robotic Arm Interactive Orthopedic System developed by MAKO Surgical Corp. RIO is cleared by the FDA for use in surgical knee and hip procedures, in which the use of stereotactic surgery may be appropriate, and where reference to rigid anatomical bony structures can be identified relative to a CT-based model of anatomy.

Supporting paragraphs: MAKO Surgical Corp. Stryker Corporation
Answer: $1.65B