Pneumatic Artificial Muscles are under investigation for many years. Most of them are units of large dimensions, impossible to use in medical robotics. However, low emittance of heat of working medium is one of the most important advantages of this drive and crucial in medical robotics. Problem of combination of advantages of this drive and preferable for medical use size found solution at Lodz University of Technology, where transversal pneumatic muscles were developed. Thanks to the innovative structure, designed muscles characterize much smaller dimensions and high strength relative to the total volume change. Therefore, they may be successfully used in drive of the robot which is moving inside the human body. The article presents the results of static and dynamic tests of Transversal Pneumatic Muscles.