15results about "Oesophagi" patented technology

Implantable devices—such as stents and rings—that comprise markers for tracking their deployment in a body lumen are disclosed. The markers may be used to monitor progress of expansion of the implantable device, potential migration of the implantable device, and diameters of the body lumen. Markers may be deployed in the body lumen separately from another implantable device to assist tracking of migration of the implantable device. Markers may be placed circumferentially around a wall of a body lumen to track growth of an aneurysm or a stricture.

A stent system includes a self-expanding endoprosthesis and a stent delivery system including an elongate shaft having an inflatable balloon disposed proximate a distal end, and an endoprosthesis retention element disposed around the self-expanding endoprosthesis and the inflatable balloon. The retention element is configured to constrain the endoprosthesis in a radially collapsed configuration. The retention element is configured to fracture upon inflation of the balloon. The endoprosthesis is configured to exert a first radially outward force in the radially collapsed configuration. The retention element is configured to fracture when a second radially outward force greater than the first is applied to the retention element. The retention element includes a tubular sleeve disposed radially outward of and in intimate contact with the endoprosthesis, wherein the tubular sleeve is configured to break apart when the balloon is shifted toward the inflated configuration.

The present application relates to the field of medical instruments. Disclosed are a gradable detachable digestive tract implant cannula and a digestive tract implant kit. The gradable detachable digestive tract implant cannula has a cannula length of 60-150 cm and has a proximal end and a distal end. At least one low-stress portion is arranged on the cannula at a distance of 30-120 cm from the proximal end. When the cannula becomes obstructed, the low-stress portion can undergo fracture in response to intestinal peristaltic forces. The digestive tract implant kit comprises a scaffold and the gradable detachable digestive tract implant cannula, and the proximal end of the gradable detachable digestive tract implant cannula is connected to the scaffold. When the cannula provided by the present application becomes obstructed, a rear end portion of the cannula can automatically undergo graded detachment in response to intestinal peristaltic forces, thereby avoiding intestinal obstruction caused by the obstruction of the cannula and thus significantly improving the safety of the instrument implanted in the body.

An apparatus for treating obesity comprising a volume filling device assembled from at least two segments is provided. Following implantation, the device is placed resting against the stomach wall of the patient to reduce the inner volume of the stomach, thereby affecting the patient's appetite.

The present invention relates to a barrier device, comprising a distal self-expanding stent having a ring-like structure in an expanded configuration, a tubular barrier having a proximal end, a distal end, and a lumen extending therethrough, the distal self-expanding stent disposed at the distal end of the tubular barrier, and an anchoring self-expanding stent disposed at the proximal end of the tubular barrier, wherein the distal self-expanding stent is configured to get distally translated through the intestine by peristalsis.

An ostomy leakage detection system (10) includes a sensing accessory (12) and a monitor device (14). The sensing accessory includes sensors configured to detect ostomy effluent leakage under a skin barrier (20) of an ostomy pouch system (18). The monitor device is configured to communicate with the sensing accessory to receive ostomy effluent leakage data. The monitor device is also configured to engage with the sensing accessory and configured to be attached to the ostomy pouch system or to user's body via the sensing accessory.

An implant comprising: a housing having a chamber; and a sensor unit; a first membrane covering the chamber on a first pressure side and a second membrane covering the chamber on a second pressure side; the chamber comprising a pressure transfer device in contact with the first membrane and the second membrane and the sensor unit arranged within the chamber between the first membrane and the second membrane, wherein a sensor control unit is arranged within the housing; wherein the sensor unit is configured to determine a pressure difference between a pressure of the first pressure side of the chamber and a pressure of the second pressure side of the chamber.

A medical stent includes an elongate tubular body extending from a proximal end region to a distal end region. The distal end region of the elongate tubular body may be adapted to resist migration as a result of peristaltic force. The distal end region of the elongate tubular body may include two or more longitudinally-extending voids and two or more longitudinally-extending dynamic engagement features that are defined between adjacent longitudinally-extending voids. The two or more longitudinally-extending dynamic engagement features are adapted to splay radially outwardly in response to an applied peristaltic force, thereby dissipating the applied peristaltic force.

A medical stent includes a central stent segment, a proximal stent segment adapted to be positioned over a proximal region of the central stent segment, and a distal stent segment adapted to be positioned over a distal region of the central stent segment. A polymeric coating extends over the proximal stent segment, the distal stent segment and at least a portion of the central stent segment, the polymeric coating adapted to allow the proximal stent segment to float over the proximal region of the central stent segment and to allow the distal stent segment to float over the distal region of the central stent segment. Upon implantation, the central stent segment is adapted to translate relative to the proximal stent segment and the distal stent segment in response to peristaltic forces.

Medical stent designs are disclosed. An example stent includes a tubular scaffold having a proximal end and a distal end. The tubular scaffold includes a first filament extending between the proximal end and the distal end, the first filament including a first biodegradable region positioned adjacent to a second biodegradable region. Further, the first biodegradable region includes a first biodegradable material, the first biodegradable material having a first rate of degradation. The second biodegradable region includes a second biodegradable material, the second biodegradable material having a second rate of degradation, wherein the first rate of degradation is different from the second rate of degradation.

A self-expanding stent configured to shift between a delivery configuration and a deployed configuration, the self-expanding stent including a tubular body having a proximal end and a distal end. In embodiments, the tubular body of the self-expanding stent defines a proximal flange, a distal flange, and a saddle portion extending from the proximal flange to the distal flange. The proximal flange and / or the distal flange may include an open-cell foam material affixed adjacent to or within the proximal flange and / or the distal flange to promote tissue ingrowth therein. Additional flanges, flange orientations, materials, and disposition of materials for a self-expanding stent are also contemplated.

A surgical anchor device for being anchored on the mucous membrane of the inner wall of the intestine, the device having a temporary anchor element presenting anchoring that can be modified in a controlled manner and having a first substantially cylindrical multiply-perforated wall presenting properties of radial elasticity whereby the first wall presents an outer diameter that can be varied in controlled manner, wherein a portion of the inner surface of the first wall is lined with an independent leakproof inner sheath having only its longitudinal ends fastened to the anchor element to define a suction chamber between the inner sheath and the first wall, the temporary anchor element being coupled to a flexible or semi-rigid tube extending outside the anchor element, an open end of the injection-suction tube opening out into the suction chamber enabling air to be injected into or sucked out from the suction chamber.

A medical stent is disclosed, comprising an elongated tubular body extending from a proximal region to a distal region. The distal region of the elongated tubular body can be adapted to resist displacement due to peristaltic forces. The distal region of the elongated tubular body may include two or more longitudinally extending gaps and two or more longitudinally extending dynamic engagement features defined between adjacent longitudinally extending gaps. The two or more longitudinally extending dynamic engagement features are adapted to open radially outward in response to applied peristaltic forces, thereby dissipating the applied peristaltic forces.

Plication systems and devices when arranged in an open configuration have one or more windows into which tissue of, for example, a tubular organ may be invaginated. The invaginated tissue may be secured in the window when the plicator system transitions to a closed configuration, which pushes needles into the open window, thereby piercing the invaginated tissue and holding the plication system, and any devices (e.g., a stent) coupled thereto in place within the tubular organ for a short (e.g., hours) or long (e.g., weeks, months, or years) period of time. Additionally, or alternatively, the plication systems may be used to close an opening in the tubular organ and / or attach two open ends of the tubular organ together.

The application discloses a trachea-esophagus fistula plugging stent based on an electrically actuated polymer and a plugging method, which comprises a trachea end stent, an esophagus end stent and an intermediate stent, the intermediate stent comprises an intermediate strut and an elastic capsule, the trachea end stent is connected with the esophagus end stent through the intermediate strut, and the elastic capsule is arranged on the outer side of the intermediate strut. In the application, polymer sheet drivers are arranged on the free ends of the trachea end stent and the esophagus end stent, the polymer sheet drivers can be attached to a fistula in a soft contact mode after being excited by electricity, the elastic capsule is arranged, the elastic capsule can be adapted to the inner walls of different types of fistula channels after being inflated, meanwhile, the stability and safety of the plugging stent are ensured, pressure sensors are arranged on the free ends of the polymer sheet drivers, the deformation of the polymer sheet drivers can be controlled under the monitoring of applied voltage, and the attachment degree to the tissues near the fistula is improved.