摘要:
Various methods and devices are described for retaining a medical implant within a body cavity. According to one aspect, at least a portion (16) of a medical implant is positioned within a body cavity, and a wall of the body cavity is re-shaped such that the re-shaped wall (14) prevents migration of the medical implant out of the body cavity. The re-shaped body wall may form a tissue pocket, tunnel, or other barrier against migration of the implant.
摘要:
Endoprosthesis (10), in its expanded configuration, comprises a generally tubular structure formed from one or more fibers (12). One or more fibers (12) comprise fiber points of intersection (14). Prior to deployment, fibers (12) comprise a photocurable coating (15), at or near points of intersection (14), in semicured form. Following delivery and expansion of the endoprosthesis (10) by suitable means, the delivery catheter (not shown) is replaced by ultraviolet light delivery catheter (18). Ultraviolet radiation is delivered via ultraviolet light delivery catheter (18) and the photocurable coating (15) is cured. Ultraviolet light delivery catheter (18) is then removed from the vessel, and endoprosthesis (10) is left in place.
摘要:
A system for performing multi-tool minimally invasive medical procedures through a single instrument port into a body cavity includes an expandable frame that carries a pair of tool cannulas, each of which has a lumen for receiving a tool useable to perform a procedure in the body cavity. The frame is expandable to orient the tool cannulas such that they allow the tools to be used in concert to carry out a procedure at a common location in the body cavity.
摘要:
A system for performing minimally invasive medical procedures through a natural orifice includes an elongate support advanceable in a flexible state through a natural orifice and through an incision in a body organ into a body cavity. The elongate support is convertible to a rigid state within the body cavity. The elongate support supports a frame that carries a pair of tool cannulas, each of which has a lumen for receiving a tool useable to perform a procedure in the body cavity. The frame is expandable to orient the tool cannulas such that they allow the tools to be used in concert to carry out a procedure at a common location in the body cavity.
摘要:
The present application describes an intravascular implantable pacing and/or defibrillation system. The described system includes a pulse generator that is implantable within a blood vessel and proportioned to blood flow through the blood vessel, and at least one electrode attachable to the pulse generator. During implantation, the pulse generator is introduced into a patient's vasculature, advanced to a desired vessel and anchored in place within the vessel. The electrode or electrodes are placed within the heart or surrounding vessels as needed to deliver electrical pulses to the appropriate location.
摘要:
A device for inducing weight loss in a patient includes a tubular prosthesis self-expandable from a collapsed position in which the prosthesis has a first diameter to an expanded position in which the prosthesis has a second, larger, diameter. In a method for inducing weight loss, the prosthesis is placed in the collapsed position and inserted into a stomach of a patient. The prosthesis is allowed to self-expand from the collapsed position to the expanded position and into contact with the walls of the stomach, where it induces feelings of satiety and/or inhibits modulation of satiety-controlling factors such as Ghrelin.
摘要:
Various methods and devices are described for retaining a medical implant within a body cavity. According to one aspect, at least a portion (16) of a medical implant is positioned within a body cavity, and a wall of the body cavity is re-shaped such that the re-shaped wall (14) prevents migration of the medical implant out of the body cavity. The re-shaped body wall may form a tissue pocket, tunnel, or other barrier against migration of the implant.
摘要:
Embodiments of surgical access cannulas and access systems for use in gaining access to a body cavity of a patient via a natural orifice are disclosed. A distal end of an access cannula is advanced through a natural orifice into a hollow organ. Instruments passed through the cannula are used to form an incision in the wall of the hollow organ. The access cannula is anchored in the incision with its distal opening giving access to a body cavity outside the hollow organ. Surgical instruments are passed through the access cannula and used to perform procedures in the body cavity.
摘要:
An apparatus according to the invention may comprise one or more expandable structural support pylons (140), means for deploying said one or more structural support pylons (138, 141), and one or more therapeutic substances. Structural support pylons (20) may comprise an elastomeric core (22), or may comprise one or more suitable metals, and may be deployed by shortening the length and increasing the height of the pylon. Alternatively, scaffold (200) may comprise a delivery configuration in which first unit (202) and second unit (204) he generally end to end, and a deployed configuration in which superior surfaces (216) and (218) exert an upward force and inferior surfaces (220) and (222) exert a downward force on superior and inferior vertebral surfaces respectively. A method according to the invention may comprise accessing an interior of a diseased or injured bone in a minimally invasive manner, creating a semi-circular path within said bone, deploying one or more structural support pylons within said interior, introducing structural reinforcement material, and if desired, repeating with one or more subsequent structural support pylons.