摘要:
Methods and devices for blocking orifices and occluding cavities within a patient are provided. The device in one variation comprises first and second tubular members attached to a collapsible sealing element. The device can be placed through an orifice and the collapsible sealing element can be collapsed to seal the orifice. An embolic may be introduced distal to the sealing element to occlude a cavity. The device may incorporate a locking mechanism which can be engaged to lock the sealing element into the collapsed position. The device may incorporate a valve to prevent flow through the tubular members, for example to prevent egress of the embolic from a cavity. The device can be detached to provide a permanent seal of the orifice, and can retain the embolic within the cavity. The device may be used in conjunction with a stent or other retention device to assist the sealing element in maintaining the seal.
摘要:
A vaso-occlusive implant has a primary helical-coil shape that defines a primary axis and a three-dimensional secondary shape. The secondary shape includes a substantially helical section and a second section having a plurality of non-overlapping loops or loop sections. Each loop defines a plane that is oriented at an angle from about 30-150 degrees relative to a plane defined by an immediately preceding or immediately succeeding loop along the primary axis. The coil sections or loops can be generally circular loops or other smooth shapes.
摘要:
The present invention provides an embolic assembly delivery apparatus having superior flexibility characteristics at its distal end, that is, at the point of attachment of the embolic assembly to the delivery apparatus. It also provides a method of using the apparatus to deliver an embolic assembly to a target site in a patient's body.
摘要:
The present invention provides an embolic assembly delivery apparatus having superior flexibility characteristics at its distal end, that is, at the point of attachment of the embolic assembly to the delivery apparatus. It also provides a method of using the apparatus to deliver an embolic assembly to a target site in a patient's body.
摘要:
This is a device for occluding a space within the body. In particular, the device comprises an expandable member, an inner member and one or more stop elements. The devices may be placed in a desired site within a mammal to facilitate the formation of an occlusion.
摘要:
An apparatus for treating tissue within a lumen may include a therapeutic or diagnostic instrument. A cleaning device may also be supported by the instrument. The cleaning device has a portion of a cleaning surface positioned proximal to the distal end of the cleaning device.
摘要:
It has been discovered that using n-butylmethyldimethoxysilane (BMDS) as an external electron donor for succinate-containing Ziegler-Natta catalysts can provide a catalyst system that may prepare polypropylene films with improved properties. The catalyst systems of the invention provide for controlled chain defects/defect distribution and thus a regulated microtacticity along with broadened molecular weight distribution.
摘要:
It has been discovered that using n-butylmethyldimethoxysilane (BMDS) as an external electron donor for succinate-containing Ziegler-Natta catalysts can provide a catalyst system that may prepare polypropylene films with improved properties. The catalyst systems of the invention provide for controlled chain defects/defect distribution and thus a regulated microtacticity along with broadened molecular weight distribution.
摘要:
An interactive game board system includes a game board, a plurality of capacitive sensors embedded in the game board, a microprocessor with input channels for the capacitive sensors, computer memory means, software instructions and data for directing an interactive game, one or more playing pieces with electrically an conductive portion, and power supply means. An interactive game board system includes interdigitated sensors. An interactive game board system includes capacitive sensors operating in dynamic sensing mode. An interactive game board system includes means for identifying individual game pieces. A method of providing an interactive game board system includes providing a game board, providing capacitive sensors, providing a microprocessor with input channels for the sensors, providing, computer memory means with software instructions for operating the interactive game system, providing a plurality of game pieces with an electrically conductive portion, detecting the presence or absence of game pieces in the vicinity of the sensors, determining the future direction of game play based upon the detecting step, and providing directive feedback to game players based upon the determining step. A method of providing an interactive game board system includes identifying individual game pieces.