47 results about "Laparoscopic adjustable gastric banding" patented technology

A remotely controlled gastric band system that is practically immune to external magnetic fields, such as from a Magnetic Resonance Imaging (MRI) machine, incorporates a bi-directional pump and fluid reservoir to adjust fluid volume in a gastric band. A piezoelectrically driven (e.g., rotary actuator, linear actuator) selectively compresses and expands a metal bellows hermetically sealed within a biocompatible and nonferromagnetic case such as titanium.

A restriction system, such as an adjustable gastric band, for forming a restriction in a patient and non-invasively communicating pressure data regarding the restriction to an external monitor. The system includes a restriction device for implantation in a patient to form a restriction. The system further includes an implanted port connected to the restriction device. The port contains a working fluid for affecting the size of the restriction. The system further includes a pressure sensing system in communication with the working fluid for measuring the pressure of the working fluid and transmitting pressure measurement data to an external monitor.

A self-regulating gastric band apparatus for adjusting stoma size. The apparatus includes an adjustable gastric band that has an inner ring expanding with injected fluid. A band adjustment assembly is provided for implanting with the gastric band that includes a sensor for sensing fluid pressure in the inner ring. The band adjustment assembly further includes a pump assembly connected to the expandable inner ring and to a controller that can operate the pump assembly to adjust the volume of the fluid in the band based on the sensed fluid pressure. The band adjustment assembly includes memory storing an operating range relative to a target fluid pressure, and the pump assembly is operated to maintain the sensed band pressure within the operating range. The target pressure being set to maintain pressure variations below a predefined variation limit generally corresponding with satiated fill volumes for a particular patient and implanted band. An elongated fluid reservoir may extend along a substantial part of a fill tube. A balloon-like expandable fluid reservoir in fluid communication with the pump assembly may store a volume of the fluid for adjusting the volume of fluid in the lumen. A protective outer sheath may be provided around the exterior of an expandable fluid reservoir in both a first, deflated state, and a second, inflated state of the reservoir.

A surgically implantable fluid adjustable device, such as an adjustable gastric band, having an elongated substantially flexible inflatable portion, and an elongated flexible and substantially inextensible band portion attached to the inflatable portion. The device further includes a member for changing the shape of the device from a straight configuration to a curved configuration after being implanted within a body.

A food intake restriction device for forming a restriction in a patient's gastro-intestinal tract and non-invasively communicating pressure data regarding the restriction to an external monitor. The device includes a food intake restriction device implanted substantially about a patient's gastro-intestinal tract to form a restricted opening in the tract. A port is connected to the restriction device. The port contains a working fluid for affecting the size of the restricted opening. A pressure sensing system communicates with the working fluid to measure the pressure of the working fluid. A transmitter communicates the measured fluid pressure to the external monitor.

A gastric restrictive device positionable around a human stomach to limit the flow of food therethrough is provided with structure for facilitating suturing of the gastric restrictive device to the stomach and thereby preventing movement of the gastric restrictive device relative to the stomach.

A releasably-securable gastric band (12) having a tail end (10a) and a head end (10b) for receiving the tail end (10a) is disclosed. The gastric band (12) also includes a releasable locking means (20) that releasably secures the head (10b) and tail ends (10a) together. The tail end (10a) may include a tooth (14) and the head end (10b) may include a notch (22) for engaging the tooth (14). Upon insertion of the tail end (10a) into the head end (10b), the tooth (14) mates with the notch (22) and releasably locks the tail end (10a) in the head end (10b). The releasably-securable gastric band (12) includes a release tab (24). When force is applied to the release tab (24) in a direction perpendicular to a central axis of the gastric band (12), the tooth (14) is disengaged from the notch (22) to allow the gastric band (12) to be released.

A self-regulating gastric band apparatus for adjusting stoma size is disclosed. The apparatus includes an adjustable gastric band that has an expandable portion containing a volume of fluid. A band adjustment assembly is provided for implanting with the gastric band that includes a sensor for sensing fluid pressure in the expandable portion. The band adjustment assembly further includes a pump assembly connected to the expandable portion and to a controller that operates the pump assembly to adjust the volume of the fluid in the band based on the sensed fluid pressure. The band adjustment assembly includes memory storing an operating range relative to a target fluid pressure, and the pump assembly is operated to maintain the sensed band pressure within the operating range. The target pressure is set to maintain pressure variations below a predefined variation limit generally corresponding with satiated fill volumes for a particular patient and implanted band.