Abstract: Apparatus and methods for performing vasectomies are disclosed. In preferred embodiments, a clamp has a set of jaws, the distal ends of which terminate in a partial or completely circular structure that is essentially a split ring. The ring may include pointed tips structured to pierce the vas deferens. The tips engage opposing sides of the vas deferens. Various embodiments of the toothed clamps may be preferred for “open” versus “closed” vasectomies.

Abstract: A therapeutic device is provided for assisting in the maintenance of an erection in a male penis which is a continuous ring prepared from a solid elastomeric material which is very soft, highly extensible and exhibits a very low modulus, the ring having a circular inner diameter and circular cross-section which is of a size adaptable to be readily placed about and snugly engage the base end of a penis with sufficient radial compressive force applied to the penis to restrict outward veinal flow of blood from the penis without complete occlusion of arterial blood flow.

Abstract: A disposable aspiration needle guide comprising a plastic guide channel or tube through which an aspiration needle may be passed attached to a planar flexible support having an adhesive coating on one surface thereof. The needle guide is adhesively attached along the length of the top or bottom of a physician's gloved finger. A pharmaceutically acceptable preparation of an antibiotic compound can be deposited in the interior of the tube to deliver a high concentration of antibiotic to a puncture site when an aspiration needle is inserted therethrough.