Abstract: A surgical instrument for easy use of an operative tool. The surgical instrument includes a handle, a spring housing assembly, a distal assembly, a ball ring assembly, and the operative tool. The spring housing assembly is disposed at a distal end of and secured within the handle. The distal assembly is disposed against the spring housing assembly, and the ball ring assembly includes a plurality of balls. The distal assembly is positioned between the spring housing assembly and the distal assembly. The operative tool inserted through the distal assembly and connected to the spring housing assembly.

Abstract: A surgical tool that is self sealing. The surgical tool includes a body and a sealing disc. The body includes a tube positioned at a distal end and a hub at a proximal end. Furthermore, the body includes a sealing disc receiving space positioned through a sidewall of the hub. The sealing disc is securable within the sealing disc receiving space.

Abstract: A surgical instrument for easy use of an operative tool. The surgical instrument includes a handle, a bushing tubing assembly, a pressure plate assembly, a cap, a ball ring assembly, and the operative tool. The bushing tubing assembly is connected to a distal end of the handle, while the pressure plate assembly is positioned at a proximal end of the handle and extends to a clamp disposed within the handle. The cap is positioned across from a proximal end of the pressure plate assembly. The ball ring assembly includes a plurality of balls and positioned between the pressure plate assembly and the cap. The operative tool is inserted through the bushing tubing assembly and the guide tube and then connects to the cap.

Abstract: Embodiments of a micro-vitreoretinal trocar blade may have a top surface and a bottom surface that converge to form cutting edges. Each of the top surface and bottom surface have a large rounded apex to maximize the area of the blade. Each surface also has concave regions that may form the cutting edges. Advancing the MVR trocar blade into tissue causes the tissue to contact the apexes of the top and bottom surfaces. The apexes draw the tissue into contact with the cutting edges. The cutting edges incise the tissue such that the incision is sized to accommodate a trocar cannula. The geometry of the top surface and bottom surface ensure that the features of the blade do not protrude radially outside of the diametral envelope of the shaft.

Abstract: A trocar having a blade split into two portions, a fixed portion and a movable portion. The movable portion is attached to the fixed portion at a pivot point that allows the movable blade portion to extend beyond the width of the fixed portion or be retracted within the width of the fixed portion. The cannula may be slidably received on the blade and provide the means to retract the movable portion of the blade to within the width of the fixed portion of the blade.

Abstract: A dispensing assembly has a glass tube assembly, a chamber housing, a needle, and a temperature control device. The glass tube assembly includes a glass tube with inner and outer surfaces and distal and proximal ends. A plunger is fluidly sealed to the inner surface of the glass tube at the proximal end, and a seal is located at the distal end of the glass tube. The chamber housing has an inner surface and an outer surface. The inner surface partially defines a chamber for receiving the glass tube assembly. The needle has sharp distal and proximal ends, traverses the chamber housing, and is fluidly coupled to the chamber. The temperature control device at least partially surrounds the chamber housing. The proximal end of the needle is arranged to puncture the seal when the glass tube assembly is pressed against the proximal end of the needle.

Abstract: A hypodermic needle for delivering a bolus of a pharmaceutically active agent to the posterior chamber of the eye having a lancet disposed at the distal tip and a lumen disposed along a longitudinal axis within. The lancet may be formed by an angled linear cut coming to a point at the distal tip of the needle, or an arc-shaped cut beginning at the needle tip parallel to the longitudinal axis and gradually arcing upward to roughly perpendicular to the longitudinal axis. Additionally, cuts, grooves, channels, or teeth may be added to the surface of the lancet in a regular or irregular pattern for the purpose of increasing surface tension on the drug bolus.

Abstract: A cannula having a body, a sealing disc, and a cap. The sealing disc is located within the body and is compressed by the cap. An angled cut in the sealing disc allows microsurgical instruments to be inserted through the cannula into the eye. Upon removal, the cut in the sealing disc closes, preventing the loss of intraocular pressure.

Abstract: A cannula, for delivering a bolus of a pharmaceutically active agent to the posterior chamber of the eye, having an orifice disposed at the distal tip. The cannula is slidably disposed within a hypodermic needle. The sliding action of the cannula within the needle provides a means for trimming a formed bolus of a pharmaceutically active agent from the orifice of the cannula. In addition, the double wall formed by the cannula within the needle provides insulation from the cooler temperatures within the eye to allow for the delivery of phase transition substances.

Abstract: The present invention provides an instrument set for removing an object from the eye including a forceps having first and second jaws mounted for relative movement toward and away from one another between a first position in which the backs of the jaws are relatively nearer to one another and a second position in which the backs of the jaws are relatively further from one another. At least one of the jaws defines a cutter on its back able to cut an exit wound upon withdrawal of the jaws from the eye. The forceps may optionally include a conforming portion softer than the jaw body. The instrument set may optionally include elongated magnetic probe. The instrument set may optionally be provided in a single procedure pack that encloses the forceps and probe in a closed sterile environment.

Abstract: A wound clamp having two substantially identical halves. The clamp halves are biased together using a spring or elastomeric band. Prongs or needles integrally formed with the halves cause the clamp to be engaged firmly on the conjunctival and scleral tissue about the wound. The biasing of the clamp halves toward each other provide for a tight sealing of the wound.

Abstract: A probe tip having a surgical tool manufactured from a light transmissive material. Such a construction eliminates the need for a separate fiberoptic and surgical tool. If desired, the probe tip may be used in combination with a surgical probe having an actuation handle made from springy material having a memory. Squeezing the handle causing the actuation device to elongate, thereby causing movement in the probe tip. The probe handle of the present invention may be held and actuated in any position.

Abstract: An instrument dispenser having an actuation handle made from springy material having a memory. Squeezing the handle causes the dispenser to elongate, thereby causing movement in the distal end of the dispenser tip. The tip has a ratcheting mechanism so that the movement is in the forward direction only. The tip further contains a sclerotomy lance with a shaft slightly larger in diameter than an aperture in the wound clamp. A plurality of wound clamps may be held on the tip about the lance so that the shaft of the lance spreads the halves of the wound clamps apart slightly. The wound clamps are pushed forward by the ratcheting movement of the tip and deposited at the surgical site. The dispenser of the present invention may be held and actuated in any position by a single hand.

Abstract: A probe tip having a surgical tool manufactured from a light transmissive material. Such a construction eliminates the need for a separate fiberoptic and surgical tool. If desired, the probe tip may be used in combination with a surgical probe having an actuation handle made from springy material having a memory. Squeezing the handle causing the actuation device to elongate, thereby causing movement in the probe tip. The probe handle of the present invention may be held and actuated in any position.

Abstract: A probe having an actuation handle made from springy material having a memory. Squeezing the handle causing the actuation device to elongate, thereby causing movement in the probe tip. The probe handle of the present invention may be held and actuated in any position.

Abstract: A probe having an actuation handle made from springy material having a memory. Squeezing the handle causes the actuation device to elongate, thereby causing movement in the probe tip. The probe handle of the present invention may be held and actuated in any position.

Abstract: A microsurgical instrument that includes a handle and a dissecting tip coupled to the handle is disclosed. The tip includes a blade having a generally elliptical three-dimensional geometry. The blade may include an edge having a first arc and an opposing second arc. When the instrument is used to form an intracorneal pocket for the implantation of an intracorneal optical lens, the curvature of the first arc allows the edge to dissect a first blind spot of the pocket, and the curvature of the second arc allows the edge to dissect a second blind spot of the pocket. The blade may also be formed with a first depression in its top surface and a second depression in its bottom surface. When the instrument is used to form an intracorneal pocket, the depressions reduce the drag on, and corresponding trauma to, stromal tissue.

Abstract: A microsurgical instrument having a handle and a dissecting tip coupled to the handle is disclosed. The handle includes a cannula for transporting surgical fluid. The dissecting tip includes a blade for dissecting tissue and an aperture for delivering the fluid. The instrument may be used to more effectively create an intracorneal pocket for the implantation of an intracorneal optical lens.