Abstract:
A medical device and system for modifying a left atrial appendage ("LAA"), as well as related methods, are provided. In accordance with one embodiment, a medical device includes a plurality of discrete frame segments coupled with at least one ring member to form a frame structure. Each discrete frame segment includes an expanding leg, a collapsing leg and a hub extension. A tissue growth member is coupled with the plurality of discrete frame segments to define a substantially convex surface and a substantially concave surface.
Abstract:
The present invention is directed to various embodiments of medical devices and methods for occluding a fallopian tube for contraception and permanent sterilization. In one embodiment, the medical device includes an outer member, an inner member and a tissue growth member. The outer member includes an outer surface and an inner surface, wherein the inner surface defines a bore in the outer member. The inner member is configured to be positioned within the bore of the outer member. The tissue growth member is attached to the outer surface of the outer member and is configured to induce tissue growth thereto. With this arrangement, the medical device can be implanted within the fallopian tube and serve as a permanent occluding device therein. If desired, the medical device can be partially removed from the fallopian tube to restore the ability for conception.
Abstract:
Medical devices, systems and methods for treating valve prolapse in, for example, the mitral valve. The medical device is employed by delivering the device percutaneously and lodging the device adjacently above the valve. With this arrangement, the device provides a back-stop to prevent valve prolapse and, thus, prevent valve regurgitation.
Abstract:
The present invention provides devices, systems and methods for closing a paravalvular leak. In accordance with one embodiment, a medical device includes at least one multicellular frame member (112) configured to be implanted at a paravalvular leak. The medical device further includes at least one tissue in-growth member (116) associated with the frame member, the tissue in-growth member being configured to promote tissue growth and permanently maintain the frame member at the leak. The frame member may be self expanding device formed, for example, of a shape-memory alloy. The tissue in-growth member may be formed from a polymer material. In one particular embodiment, the frame member may be a substantially tubular structure and the tissue in-growth member may be disposed within an interior space defined by the tubular structure. In another embodiment, the frame ember may be a substantially flat or planar structure.
Abstract:
A medical system for treating an internal tissue opening can include a closure device and associated delivery device. The closure device can include a body portion operatively associated with a first anchor and a second anchor. The body portion can include a plurality of segments defining a multi-cellular structure. The closure device can be configured to apply lateral force to tissue of the internal tissue opening to bring tissue together. The closure device can have a substantially flat aspect, and have a depth thickness that is substantially greater than the thickness or width of a majority of the members forming the closure device to reduce out of plane bending. The closure device can also include a member adapted to induce tissue growth.
Abstract:
A medical system for treating an internal tissue opening can include a closure device and associated delivery device. The closure device can include a multi-cellular body portion operatively associated with a first anchor and a second anchor. The closure device can be configured to apply lateral force to tissue of the internal tissue opening to bring tissue together. The closure device can have a substantially flat aspect, and have a depth that is substantially greater than the thickness of a majority of the members forming the closure device. The closure device can also include a member for promoting tissue growth. The delivery device can include an actuating assembly configured to partially deploy the closure device by a first movement, and deploy a second portion of the closure device by a second movement. The delivery device can also include a release assembly to selectively release or disconnect the closure device from the delivery device.
Abstract:
An apparatus and method for rapidly analyzing samples for analytes of interest by an homogeneous immunofluorescence assay. The apparatus includes a sample test cartridge having a high control sample section, a low control sample section, and at least one test sample section. Each of these sections contain at least one pre-loaded reagent housed in a well within the the cartridge wherein the low control sample section contains a known low amount of an analyte of interest and the high control sample section contains a known high amount of an analyte of interest. The cartridge includes a biosensor comprising a planar waveguide having first and second parallel plane surfaces and an edge extending between them, the edge having a receiving region for receiving a light beam. Each of the high control sample section, the low control sample section, and the test sample control sections have a well which includes a waveguide surface, wherein the contents of each section contacts capture molecules immobilized on the waveguide surface. The capture molecules are configured to specifically bind a chosen analyte and fluoresce when interacting with light passing through the waveguide surface. The concentration of said analyte of interest in said sample fluid is determined by a comparison of intensities of fluorescence of between said capture molecule areas of said sample capture molecule well, said low control capture molecule well, and said high control capture molecule well.
Abstract:
The present invention is directed to a medical device for occluding a fallopian tube for contraception and sterilization. The medical device includes an outer member (12), an inner member (14) and a tissue growth member (16). The outer member includes an outer surface (20) and an inner surface (22), wherein the inner surface defines a bore (24) in the outer member. The inner member is configured to be positioned within the bore of the outer member. The tissue growth member is attached to the outer surface of the outer member and is configured to induce tissue growth thereto. With this arrangement, the medical device can be implanted within the fallopian tube and serve as an occluding device therein. If desired, the medical device can be partially removed from the fallopian tube to restore the ability for conception.
Abstract:
A method and system are provided for percutaneously gaining access to oxygenated blood with an anastomosis device and pumping such oxygenated blood to other arterial regions of the vascular system via an LVAD system. In one embodiment, a system may include an anastomosis device extending through an opening of the atrial septum. A filament may be coupled to the anastomosis device. A snare device may access the right atrium through the superior vena cava, grasp the filament, and withdraw the filament through the superior vena cava. The filament may then be used as a guide to direct a catheter, a conduit or some other structure into the right atrium of the heart via the superior vena cava. A flow path may be defined between the anastomosis device and an arterial location, such as in the aorta, such that at least some oxygenated blood may by-pass the left ventricle and be discharged into the aorta.
Abstract:
A method and system are provided for percutaneously gaining access to oxygenated blood with an anastomosis device and pumping such oxygenated blood to other arterial regions of the vascular system via an LVAD system. In one embodiment, a system may include an anastomosis device extending through an opening of the atrial septum. A filament may be coupled to the anastomosis device. A snare device may access the right atrium through the superior vena cava, grasp the filament, and withdraw the filament through the superior vena cava. The filament may then be used as a guide to direct a catheter, a conduit or some other structure into the right atrium of the heart via the superior vena cava. A flow path may be defined between the anastomosis device and an arterial location, such as in the aorta, such that at least some oxygenated blood may by-pass the left ventricle and be discharged into the aorta.