摘要:
A surgical knife safety device having a handle, a blade connected to the handle, and a guard carried by the handle for sliding movement between a retracted position in which the blade is exposed for use, and an extended position for covering the sharp cutting edge of the blade. In the retracted position, an enlarged guard radius is provided at the distal end of the handle to allow improved handle control and blade orientation. The enlarged guard radius is positioned to allow the user to firmly grip a large distal handle portion which is preferably molded as a single piece with the blade holder, preventing unwanted blade or handle movement due to guard mechanism tolerances. A spring, such as leaf spring or a cantilever beam, and a pair of detents or slots are provided to fix the guard in the extended or retracted position and to provide resistance during movement between the two positions. Additionally, a pushback prevention mechanism, a user operable lock and a drop-force operable lock are provided to prevent accidental retraction of the guard from the fully extended and guarded position.
摘要:
The present invention relates to a method of altering the refractive properties of the eye, the method including forming a pocket in a cornea of an eye of a patient so as to gain access to tissue bounding the pocket; after the pocket in the cornea has been formed, applying a photosensitizer inside the pocket so that the photo sensitizer permeates at least a portion of the tissue bounding the pocket, the photosensitizer facilitating cross-linking of the tissue bounding the pocket; inserting a lens implant into the pocket so as to change the refractive properties of the eye; and irradiating the cornea so as to activate cross-linkers in the portion of the tissue bounding the pocket and thereby stiffen the cornea and prevent corneal ectasia of the cornea.
摘要:
Methods and devices are adapted for implanting into the eye. An incision is formed in the cornea of the eye and a shunt is inserted through the incision into the anterior chamber of the eye. The shunt includes a fluid passageway. The shunt is passed along a pathway from the anterior chamber through the scleral spur of the eye into the suprachoroidal space and positioned in a first position such that a first portion of the fluid passageway communicates with the anterior chamber and a second portion of the fluid passageway communicates with the suprachoroidal space to provide a fluid passageway between the suprachoroidal space and the anterior chamber.
摘要:
A surgical blade may include a surgical incision guide configured to guide a surgical incision. The surgical incision guide may include one or more surgical incision guide marks. A surgical incision guide mark may be configured to provide information about a surgical incision. For example, a surgeon may compare a location of a surgical incision guide with a portion of a tissue to identify an incision depth. Illustratively, a surgeon may compare a location of a surgical incision guide with a portion of a tissue to identify an optimum incision depth to adjust an orientation of a surgical blade.
摘要:
A surgical cutting device may be made of one or more pieces and include a front edge having a plurality of incision points. The incision points may be the forwardmost points of the front edge and may be separated by a recessed portion. The surgical cutting device may also have lateral edges that are non-cutting surfaces.
摘要:
Methods and devices are adapted for implanting into the eye. An incision is formed in the cornea of the eye and a shunt is inserted through the incision into the anterior chamber of the eye. The shunt includes a fluid passageway. The shunt is passed along a pathway from the anterior chamber through the scleral spur of the eye into the suprachoroidal space and positioned in a first position such that a first portion of the fluid passageway communicates with the anterior chamber and a second portion of the fluid passageway communicates with the suprachoroidal space to provide a fluid passageway between the suprachoroidal space and the anterior chamber.
摘要:
A safety surgical knife has a blade guard and a knife blade holder. The knife blade is covered when the guard is extended to protect it. When the blade is extended to its full operating position the guard is simultaneously retracted. When the blade is retracted the guard is simultaneously extended to return to its protective position. A shaped knife handle acts as an orientation guide and an anti-roll prop keeps the knife from rolling over when placed on a flat surface.
摘要:
The invention relates to an instrument for preparing an corneal endothelial graft, the tool being a trephine blade (1) having a cross section in the form of an arc of a circle of between 270° and 355°. The invention also relates to a method of preparing a graft using such an instrument.
摘要:
A surgical blade may include a surgical incision guide configured to guide a surgical incision. The surgical incision guide may include one or more surgical incision guide marks. A surgical incision guide mark may be configured to provide information about a surgical incision. For example, a surgeon may compare a location of a surgical incision guide with a portion of a tissue to identify an incision depth. Illustratively, a surgeon may compare a location of a surgical incision guide with a portion of a tissue to identify an optimum incision depth to adjust an orientation of a surgical blade.