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Endoscopic stenting is a medical procedure by which a stent, a hollow device designed to prevent constriction or collapse of a tubular organ, is inserted by endoscopy.They are usually inserted when a disease process has led to narrowing or obstruction of the organ in question, such as the esophagus or the colon.
Unlike the latter two procedures, the XEN Gel Stent is performed through an internal approach and avoids directly incising and disrupting the conjunctiva itself. [ 34 ] [ 35 ] The 6-millimeter stent is placed through the trabecular meshwork , with one end of the stent sitting directly underneath the conjunctiva, past the outer wall of the sclera.
The black solid structure is the endoscope used to place the stent. Self-expandable metallic stents are typically inserted at the time of endoscopy, usually with assistance with fluoroscopy or x-ray images taken to guide placement. Prior to the development of SEMS small enough to pass through the channel of the endoscopy, SEMS were deployed ...
Glaucoma is a group of diseases affecting the optic nerve that results in vision loss and is frequently characterized by raised intraocular pressure (IOP). There are many glaucoma surgeries, and variations or combinations of those surgeries, that facilitate the escape of excess aqueous humor from the eye to lower intraocular pressure, and a few that lower IOP by decreasing the production of ...
Initial attempts to incorporate the clip into applications in endoscopy (such as clipping bleeding blood vessels) were limited by the applicator system of the clip. [1] However, by 1988, an easy to use applicator delivery system was developed, and a functional reloadable endoclip system was described. [ 2 ]
The procedure is fairly simple. It starts with a pre-operative evaluation, so an ophthalmologist can assess a patient's prescription and eye shape and design their custom lenses.
A stent graft or covered stent is type of vascular stent with a fabric coating that creates a contained tube but is expandable like a bare metal stent. Covered stents are used in endovascular surgical procedures such as endovascular aneurysm repair. Stent grafts are also used to treat stenoses in vascular grafts and fistulas used for hemodialysis.
In this procedure, a nasal endoscope is used to visualise the lacrimal sac through the nasal cavity. The bone covering the lacrimal sac is nibbled out. The medial wall of the sac is incised or excised, facilitating drainage of tears into the nasal cavity. This procedure avoids scarring.