摘要:
An apparatus and method for connecting a first conduit to the heart without cardiopulmonary bypass. The first conduit may be attached to a second conduit having a prosthetic device interposed. The second conduit may then be connected to the aorta. The prosthetic device may be a prosthetic valve (or pump). The apparatus includes an implantable connector with first conduit component, a coring component, a retractor expansion component slidably coupled to the coring component, and a pushing component. The retractor expansion component seats against and separates the inside wall of the left ventricle so that the coring component cuts cleanly through the myocardium, forming a tissue plug. By remaining seated against the inside wall, the retractor expansion component follows the tissue plug into the coring component. The surgeon applies force and rotary motion to the pushing component sufficient to cut the tissue plug and implant the prosthetic component.
摘要:
An apparatus and method for connecting a first conduit to the heart without the need for cardiopulmonary bypass. The first conduit may then be attached to a second conduit that has a prosthetic device interposed. The second conduit may then be connected to the aorta. The prosthetic device may be a prosthetic valve or a pump, for example. The apparatus of the present invention includes an implantable connector with first conduit component, a retractor expansion component, a coring component, and a pushing component. The retractor expansion component is slide-ably coupled to the coring component. The retractor expansion component serves to seat against and separate the inside apical wall of the left ventricle so that the coring component may cut cleanly through the myocardium to form a tissue plug without leaving any hanging attachments to the inside walls. By remaining seated against the inside wall, the retractor expansion component follows the tissue plug into the coring component. The surgeon applies force and rotary motion to the pushing component sufficient to cut the tissue plug and implant the prosthetic component.
摘要:
A connector for joining a first hollow structure to the side wall of a second hollow structure, the connector comprising: a fluid-constraining tube having a fluid-constraining neck extending therefrom, wherein the tube comprises a lumen having a first opening and a second opening and the neck comprises a lumen having a first opening and a second opening, the neck being joined to the tube so that the neck is in fluid communication with the tube intermediate the length of the tube, such that fluid entering the first opening of the tube can exit the second opening of the tube, and fluid entering the first opening of the neck can exit the second opening of the tube; at least the portions of the tube adjacent to the first opening of the tube and the second opening of the tube being biased radially outwardly so that they normally assume a radially-expanded configuration, but being capable of being restrained in a radially-contracted configuration, wherein the tube is sized so that, when it is in its radially-expanded configuration, it has an outer diameter which is larger than the inner diameter of the second hollow structure.
摘要:
The invention relates to an apparatus and method for forming a hole in a wall of a hollow organ. The applicator includes a hole forming element for forming a hole in the wall of the organ, a positioning means for positioning the hole forming element, and a retractor element. In addition, the applicator includes a sequencing means for coordinating the relative movement of the retractor element and the hole forming element in a sequential manner to thereby carry out a procedure for forming a hole in the wall of the hollow organ. The sequencing means may further include a safety latch element operatively coupled to the retracting means and the hole forming element. The safety latch of the invention keeps prevents damage to the internal surface of the organ during the formation of the hole.
摘要:
An applicator for forming a hole in a wall of a hollow vessel and engaging a graft, the applicator comprising: a hole forming element adapted to form a hole in the wall of the vessel, the hole forming element comprising a cutting element adapted to cut a hole in the wall of the vessel and a positioning element adapted to hold the position of the applicator relative to the vessel; and an insertion element adapted to be inserted through the wall of the vessel, the insertion element comprising a retraction element adapted to enter into engagement with a graft.
摘要:
A connector for joining a first hollow structure to the side wall of a second hollow structure, the connector comprising: a first component comprising: an inner collar for disposition within the interior of the second hollow structure, the inner collar having a toroidal configuration characterized by an outer perimeter and an inner perimeter, with the inner collar being flexible; a hollow body connected to the inner collar and upstanding therefrom, the hollow body of the inner collar being aligned with the inner perimeter of the inner collar; and a graft element mounted to the inner collar and forming a conduit extending through the hollow body and the inner perimeter of the inner collar, the graft being formed out of a fluid-retaining material; and a second component for disposition outside the second hollow structure, the second component comprising an outer collar and a hollow body connected to the outer collar, the outer collar having a toroidal configuration characterized by an outer perimeter and an inner perimeter, with the hollow body of the outer collar being aligned with the inner perimeter of the outer collar; the hollow body of the second component being sized for coaxial disposition over the hollow body of the first component so that the outer collar of the second component can be adjustably positioned relative to the inner collar of the first component and so that the conduit of the graft element provides fluid communication between (i) the region beyond the inner collar, and (ii) the region beyond the hollow body of the first component.
摘要:
A method for performing a percutaneous valve bypass, the method comprising: providing a bypass conduit having a first end and a second end; connecting the first end of the bypass conduit to a first vascular structure at a first anastomosis; connecting the second end of the bypass conduit to a second vascular structure at a second anastomosis; advancing a percutaneous valve along the bypass conduit to a deployment site located within the bypass conduit; and deploying the percutaneous valve at the deployment site so that fluid is permitted to pass from the second vascular structure to the first vascular structure but is prevented from passing from the first vascular structure to the second vascular structure.
摘要:
A self-contained and hand-held power-assisted syringe is provided which is suitable for the controlled injection of fluid material during medical procedures such as coronary angiography procedures which utilize small-bore and small sized guide catheter systems. The present invention provides a greater degree of injection power on-demand than was previously possible in a portable and hand-held syringe; and it can deliver larger volumes of radiopaque contrast medium at greater pressures than was previously possible using a conventional manual syringe. The power assisted syringe, along with all components necessary for its effective use and operation, may be pre-packaged and steriled within a single container and then disposed of after use.
摘要:
A self-contained and hand-held power-assisted syringe is provided which is suitable for the controlled injection of fluid material during medical procedures such as coronary angiography procedures which utilize small-bore and small sized guide catheter systems. The present invention provides a greater degree of injection power on-demand than was previously possible in a portable and hand-held syringe; and it can deliver larger volumes of radiopaque contrast medium at greater pressures than was previously possible using a conventional manual syringe. The power assisted syringe, along with all components necessary for its effective use and operation, may be pre-packaged and steriled within a single container and then disposed of after use.