A suturing needle is illustrated which can engage a suture to an outer housing, thereby presenting a relatively smooth surface at the distal end of the apparatus to minimize tissue trauma. A lock feature prevents unexpected extension of the needle from the outer housing which could release the suture. A finger switch is used to overcome the locking mechanism when it is desired to release the suture. The distal end of the housing and the needle are a generally similar flat profile to minimize uneven edges which could damage the tissue. The suture is retained in a hook located in the needle, the opening for which is retracted in the housing to retain the suture.
A suturing instrument for placing mattress stitches in soft tissue, such as a rotator cuff, includes an elongate shaft with both a stationary jaw and a movable jaw disposed at the distal end thereof. The shaft is coupled to a handle grip at the proximal end, which is configured to manipulate the jaws into open and closed positions. The jaws are configured to allow for atraumatic grasping of soft tissues. The stationary jaw may include a molded tip that holds and positions opposite ends of a single strand of suture material. The serrated upper jaw is configured to grasp and immobilize the tissue to be sutured. Hooked needles are movably positioned to pierce the grasped and immobilized tissues, and to engage and retrieve the opposite ends of the single strand of suture material. The handle is released to open the moveable jaw, whereupon the instrument may be withdrawn, trailing the suture, and leaving a mattress stitch in the grasped tissue.
A suture retriever and method for manipulating suture during endoscopic surgical procedures. The suture retriever has an elongated housing provided with a needle tip and a lateral opening situated near the tip. A suture engaging hook is extendable through the lateral opening and away from the axis of the housing in order to snare a suture. The hook is situated at the distal end of an elongated flexible support which is pre-formed in order to enable the hook to be laterally displaced from the axis of the needle tip when the support is moved distally relative to the lateral opening. When a suture is engaged by the hook, the latter is retracted proximally in order to place and hold the suture adjacent the lateral opening.
A device for snaring cord-like objects and a methods for using same to pass portions of the cord-like objects through tissue are provided. The device includes a shaft containing a wire assembly having an object capturing device at its distal end. The wire assembly is reciprocally movable relative to the shaft between a first position wherein the capturing device is located within the distal portion of the shaft, and a second position wherein the capturing device extends distally outwardly from the distal end of the shaft. An activation device is attached to the proximal end of the shaft and the proximal end of the wire assembly so as to allow the controlled axial movement of the wire assembly relative to the shaft, and so as to allow the shaft and the wire assembly to be rotated as a unit about the longitudinal axis of the shaft. The methods include snaring and grasping a length of cord-like material and passing the cord-like material through one or more layers of tissue. More particularly, the shaft may be inserted through the tissue, grasp the cord-like material and pull the cord-like material back through the tissue as the shaft is disengaged therefrom. Alternatively, the cord-like material may be grasped by the device, inserted through the tissue along with the distal portion of the shaft, released from the distal end of the shaft, and left extending through the tissue when the shaft is withdrawn. Further, various combinations of these alternatives may be utilized in order to lace the cord-like material through the tissue in any particularly desired manner.
A surgical method including the steps of forming an incision through a skin layer adjacent to a varicose vein with a single surgical device, and engaging the varicose vein with the single surgical device to permit removal of a selected portion thereof through the incision. The selected portion of the varicose vein is ligated subsequent to removal through the incision.
6720759 - Micro-tools - Owned by International Business Machines Corporation (Armonk, NY)
A micro tool set is described in which all of the tools are formed from stock no larger than 1.0 mm in diameter. Each tool is laser machined from stock no larger than 1.0 micron in diameter. Various shapes are "carved" from the original stock such that the finished tool does not extend beyond the nominal cylindrical shape of the stock. The tools are specifically adapted to be used for the repair of semiconductor test probe head wires.