An implant that has a tubular interior section for implantation into a patient, an exterior section connected to the interior section and an ingrowth member that includes a three-dimensional porous structure. The three-dimensional porous structure is typically located at the inner circumference of the interior section and has desirable properties to facilitate ingrowth of tissue.

A gastrointestinal device for treating obesity includes a three-dimensional porous structure configurable between a compressed pre-deployment configuration to facilitate delivery and an expanded post-deployment configuration. The porous structure includes a first opening at its proximal end and a larger second opening at its distal end. The porous structure also includes a sleeve coupled to its distal end. Optionally, the device further includes a suture at the proximal end of the wire mesh structure to facilitate retrieval and an anti-migration component positioned at the junction of the porous structure with the sleeve. The porous structure is deployed in a patient's stomach such that the anti-migration component sits proximal to the patient's pylorus and prevents migration of the entirety of the device into and through the pylorus. The sleeve extends through the pylorus, into the duodenum and ends in the duodenum or jejunum. Food enters the device from the first opening at the proximal end of the porous structure, passes through the porous structure and sleeve, and exits at the distal end of the sleeve. The device treats obesity by providing a relatively immovable volume occupying structure in the stomach and a bypass for food past the pylorus and proximal portion of the small intestine. Optionally, the device further acts to slow the passage of food through the digestive tract. Patients with the device experience satiety more quickly and have a prolonged sensation of satiety.

A system for treating a body lumen including a first stent configured to be positioned in a body lumen and a second stent configured to be positioned in the lumen of the first stent prior to removing the first stent from the body lumen. The first stent includes a liner disposed radially inward of the tubular scaffold of the first stent to permit tissue ingrowth within a tissue ingrowth region defined between the liner and the tubular scaffold. The retrieval stent is configured to be expanded within the previously implanted first stent to cause tissue to recede from the tissue ingrowth region to facilitate removal of the first stent from the body lumen.

An obesity treatment apparatus comprises at least one operable stretching device implantable in an obese patient and adapted to stretch a portion of the patient's stomach wall, and an operation device for operating the stretching device when implanted to stretch the stomach wall portion such that satiety is created.

The invention described herein relates to telescoping stents. The embodiments described herein allow for adequate securement to, accommodation for movement by, and prevention of injury of tubular organs or hollow areas of the body. Certain embodiments relate to telescoping steins with loop interlocking mechanisms. Further embodiments relate to telescoping stents with ball-in-groove interlocking mechanisms.

An illustrative endoluminal implant having an elongated tubular member. The elongate tubular member having a proximal stent, a distal stent and an interconnecting sleeve. The proximal stent tapers from a first outer diameter adjacent the proximal end region to a second smaller outer diameter adjacent the distal end region. The distal stent has an outer diameter less than the first outer diameter of the proximal stent. The interconnecting sleeve is collapsible in response to an applied radial force such that the sleeve is positionable across a natural valve or sphincter.

The present disclosure relates generally to stents and methods for managing passage of material through a body lumen. In some embodiments, a medical stent may include a stent body defined by a hollow tubular elongate structure extending along a central axis, the stent body including a first portion and a second portion. The medical stent may further include a control region between the first and second portions, wherein in a first configuration the hollow tubular elongate structure of the control region is in a closed, twisted configuration, and wherein in a second configuration the hollow tubular elongate structure of the control region is in an open, expanded configuration.

An implantable distraction device includes a tubular member oriented along a longitudinal axis, and curved first and second attachment members coupled to the tubular member and configured to be sutured within a body lumen. The second attachment member is spaced apart from the first attachment member along the tubular member. The device further includes at least one magnet coupled to the tubular member and movable relative to the tubular member. At least one of the first attachment member or the second attachment member is axially movable relative to the other to vary an axial distance between the first and second attachment members. The at least one magnet is configured such that motion of a magnetic field relative to the distraction device causes corresponding motion of the at least one magnet, and corresponding motion of one attachment member relative to the other.

Various devices, systems, and methods that can be used in the treatment of obesity and related illnesses are disclosed. In some instances, the cecum of an obese patient is distended to a pathophysiological size for a therapeutically effective period. The distention may be achieved by introduction of an object that is of foreign origin relative to the body of the patient into the cecum of the patient. In some instances, the distention is achieved by a medical device that transitions from an undeployed state, in which the medical device is introduced into the cecum of the patient, to an expanded state in which the medical device distends the cecum by an amount sufficient to trigger a colo-gastric brake in the patient.

An intestinal barrier sleeve release system includes a tubular housing having a first opening at one end and a second opening at the other end. A tubular sleeve to be released is disposed in the housing. A release body connected to the one end of the tubular sleeve is disposed at the first opening of the housing and is made of a material that can be dissolved and absorbed in human intestines. An inner sheath, a middle sheath and an outer sheath are sequentially set and move relative to each other. The inner sheath and the middle sheath are operated to move axially, the release body is disengaged from the housing, and the tubular sleeve moves out of the housing and is released at a specified position of the human intestines.