Wieckowski uses a probe fixed with a needle guide to locate the fertile eggs. Wieckowski won't accept a patient who just calls up and says she wants in vitro fertilization. Your Email Address Sign Up. Wieckowski says his research bent and his love of practical medicine led him to study in vitro techniques to enhance his infertility treatments over the past three years. However, some experts raise concerns about the spread of IVF services to private practices. If not, perhaps the woman's eggs or the man's sperm is unhealthy and no fertility technique will work.