634results about How to "Prevent retraction" patented technology

A surgical stapling and severing instrument particularly suited to endoscopic procedures incorporates a handle that produces separate closing and firing motions to actuate an end effector. In particular, the handle produces multiple firing strokes in order to reduce the required amount of force required to fire (i.e., staple and sever) the end effector. A firing member reciprocates within an elongate shaft to the end effector to transfer this firing motion. A retraction spring retracts the firing member after full firing. Between firing strokes as the firing trigger is released, an anti-backup mechanism activates an electrical actuator (e.g., elecroactive polymer actuator) that is physically grounded to the handle to bind the firing member preventing inadvertent retraction.

A proximal anchor stent ring of an endoprosthesis includes proximal apexes, distal apexes, struts extending between the proximal apexes and the distal apexes, and anchor pins. The struts, the proximal apexes, and the distal apexes define an imaginary cylindrical surface. A pair of the anchor pins is located on the struts adjacent each of the proximal apexes, the anchor pins extending inwards from inside surfaces of the struts and protruding from the struts radially outward from the cylindrical surface. By locating the anchor pins inwards, the delivery profile of the proximal anchor stent ring is minimized.

A method for aerosolizing a powdered medicament comprises coupling a powder inlet end of a feed tube with a penetration in a receptacle containing the powder. Powder is drawn upward through the tube and dispersed in a high pressure gas stream flowing past a portion of the feed tube. Apparatus comprise the feed tube mounted within a base enclosure proximate a holder for one or more receptacles, which may be in the form of a cartridge containing a plurality of receptacles formed in a continuous web. The cartridge may be reciprocated relative to the feed tube and a separate piercing mechanism in order to sequentially piercing the receptacle and thereafter couple the feed tube through the resulting penetration for extracting the powder. Alternatively, penetration(s) through the receptacle may be formed as the feed tube is coupled, or some penetrations formed prior to coupling with other penetrations formed at the time of coupling.

A prone positioning therapeutic bed comprises a base frame, a patient support platform rotatably mounted on the base frame for rotational movement about a longitudinal rotational axis, a drive system for rotating the patient support platform on the base frame, and an upright end ring at the head of the bed with a central opening for routing patient care lines and a removable upper section for improved access to a patient's head. The patient support platform preferably has pivotally mounted side rails that fold underneath the patient support platform and straps with strap connectors that indicate whether the straps are sufficiently tensioned. A direct, wired electrical connection between the patient support platform and the base frame allows full rotation of the patient support platform in either direction. A manually operable lever disengages the patient support platform from the drive system to allow manual rotation of the patient support platform.

A device for forming expansion regions in a bone, comprising, an elongate body having and axis and adapted to fit through a tunnel in a bone; and a head, provided on said body and having outer dimensions not substantially extending trans-axially to said body, wherein said head is rotatable and wherein said head is adapted to widen said tunnel in said bone by at least 10% in conjunction with said rotating.

A device for delivering an occlusive element includes an elongate pusher member having a lumen. A locking member is disposed within the lumen of the elongate pusher member. A moveable elongate releasing member is disposed within the lumen of the elongate pusher member. A filament is secured to the distal end of the elongate releasing member. The occlusive member is locked to the elongate releasing member when the filament passes through a securing member on the occlusive member and is pinched or wedged between the locking member and the elongate releasing member. The occlusive element is in an unlocked state when the elongate releasing member is retracted proximally relative to the elongate pusher member. The filament, along with the elongate releasing member, are retracted proximally until the filament is detached or uncoupled from the securing member of the occlusive member.

A dispenser box for medical bandages including orthopedic splints is described. The dispenser box includes at least one moisture impermeable container connected with a face plate containing a periphery gasket. The bandage exits through a slot in the face plate. A door is pivotally connected to and mechanically biased against the face plate. When the door is closed, a moisture resistant environment is maintained for the stored bandage materials.

A safety shield system for a needle cannula of a pen needle injector or similar device, wherein the safety shield may be retracted from a first position enclosing the needle to a second position exposing the needle for injection. The safety shield system permits retraction of the safety shield during use, but extends the shield enclosing the needle in a locked position following use. The shield system is utilized with a pen needle injector having a double ended needle cannula mounted in a hub received on the open end of the pen needle injector. The assembly is disposed of by removing the assembly and needle cannula hub and storing the assembly in the cup-shaped cap enclosing the exposed end of the needle cannula within the cap. The cap includes internal radial ribs preventing retraction of the shield prior to removing the cap preventing inadvertently piercing the cap during assembly.