897results about How to "Prevent exit" patented technology

A bone plate is provided for fixation of spaced vertebra. The bone plate has at least one through passage for securing the plate to bone with a bone fixation screw. The threaded shaft of a bone fixation screw is inserted through a bushing located in the through passage of the bone plate and the screw is thereby threadably secured to the underlying bone and the bushing is then compressed inward against the head of the screw with cams that are actuated by rotating the bushing in the through passage whereby the screw is locked relative to the bone plate. The bushing is not only compressed inwardly against the head of the screw but is also compressed downwardly by the cams into a seat to clamp separate elements of the bone plate together.

This invention is directed to a partitioning device for separating a chamber of a patient's heart into a productive portion and a non-productive portion. The device is particularly suitable for treating patients with congestive heart failure. The partitioning device has a frame-reinforced, expandable membrane which separates the productive and non-productive portions of the heart chamber. Elements of the frame include ribs that are secured to the expandable membrane, to form an integrated structure that may be unilaminar or bilaminar in form. The proximal ends of the ribs of the frame have tissue-penetrating elements about the periphery thereof which are configured to penetrate tissue lining the heart wall at an angle approximately perpendicular to a longitudinal axis of the partitioning device. The partitioning device has a hub with a non-traumatic distal end to engage the ventricular wall.

Apparatus and methods for providing access to a body cavity without substantial loss of inflation gas therein. The apparatus includes an access assembly that has a tubular member having a proximal end, a distal end, an elastic portion interposed the proximal end and the distal end, and a lumen therethrough. An anchor sleeve is disposed coaxially over the tubular member and has a radially expandable region. The anchor sleeve is moveable between an axially elongated configuration and an axially shortened configuration and is biased toward the axially shortened configuration by a force exerted by the elastic portion of the tubular member. The axially shortened configuration corresponds to the anchor sleeve being in the fully deployed position. Methods for providing anchored access to a cavity within a patient are also disclosed.

A surgical introducer sheath comprising a first member having a first longitudinally extending lumen dimensioned to receive a surgical instrument therethrough, a second member having a second longitudinally extending lumen dimensioned to receive the first member, and a retainer adjacent a distal portion of the second member movable from a first retracted position to a second extended position to limit proximal movement of the introducer sheath. Rotational movement of the second member in a first direction moves the retainer to the extended position and rotational movement of the second member in a second direction moves the retainer to a retracted position.

A laparoscopic insufflation device is provided in the configuration of a coil with a blunt tip. The device is capable of passing through the abdominal wall without cutting tissue, and exiting the abdominal wall substantially parallel to the inner surface. While rotation of the coiled device results in forward movement through the abdominal wall, a counter force can be applied to the device to create a safety space between the wall and the interior organs. With the blunt distal tip, parallel exit angle, and safety space, there is substantially no threat to the interior organs during placement of the device. Further space can be generated with the use of pressured gas to produce an abdominal cavity for the subsequent placement of trocars. By rotatably attaching the coiled insufflation device to a trocar, the advantage of a counter force can be used not only to establish the safety space but also to pull the trocar into the abdominal wall with a counterforce which resists tenting.

An intravenous system includes an assembly for coupling a solution container to a delivery system drip chamber used for regulating the flow rate of solution in a patient intravenous line. In one embodiment, the solution delivery system includes a drip chamber having an opening formed in a side wall, and a vent plug disposed in the opening for providing a self-priming function to the IV system. A termination end of the patient intravenous line includes an end cap with a vent and a seal for allowing air in the intravenous line to escape through the end cap while preventing leakage of solution from the termination end.

Methods and devices for forming magnetic anastomoses between hollow bodies. End-to-side, side-to-side and end-to-end anastomoses can be created with or without a mechanical connection between the components. The anastomotic components may have various constructions and may be secured to a vessel in various manners, for example, magnetically, mechanically or adhesively. Also provided are alternative delivery devices, as well as devices for checking the position of a component on a loaded delivery device, and for checking the seal between a vessel and an anastomotic component secured thereto.

An anastomosis device has first and second components which each having first and second parts. The first and second components are magnetically attracted to one another. The device forms a throughhole when in use. The first parts of the first and second components are positioned radially outward from the second parts relative to the longitudinal axis with the first parts of the first and second components contacting one another and being magnetically attracted to one another. The second parts of the first and second components also being magnetically attracted to one another and are separated by the vessel walls.