94results about "Stomach" patented technology

A stent device includes a stent formed in a tubular shape by weaving wires and a cover covering at least a part of the stent. The cover is partially bonded to parts rather than a whole surface of the stent.

A delivery system for delivering an implant having both a rigid portion and a flexible portion to a body lumen. The delivery system includes an outer tubular member and an inner tubular member slidably disposed within the lumen of the outer tubular member. The inner tubular member includes at least one opening positioned in a side wall adjacent to a distal end region. An expandable implant, including a rigid portion and a flexible portion, is disposed about the outer surface of the inner tubular member. A distal portion of a thread is wrapped around the flexible portion of the implant and configured to maintain the flexible portion in a radially collapsed configuration during delivery of the implant. A distal end region of the outer tubular member is disposed around the rigid portion of the implant to maintain the rigid portion in a radially collapsed configuration during delivery of the implant.

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 system for delivering an anti-migration anchor to an implantable device includes a locator system having a head portion adapted to mate with the neck portion of the device, a locator capsule coupled to the head portion, and a plurality of arms coupled to the head portion and the locator capsule, the arms having a collapsed and an extended configuration. The system includes a catheter having a distal portion coupled to and extending from the head portion. The system includes a handle coupled to a portion of the catheter, the handle having a mechanism to effect relative motion between an inner and an outer member of the catheter to cause the arms to transition from the collapsed to the extended configuration. The system includes a plurality of elongate elements having a distal end coupled to the arm and configured to facilitate the delivery of an anti-migration anchor to the arm.

Systems and methods for anchoring and restraining gastrointestinal prostheses are disclosed. In various examples, the systems and methods include securing a gastrointestinal device within a patient's anatomy by extending an anti-migration anchor through a plurality of portions of the gastrointestinal device to couple together the plurality of portions of the gastrointestinal device. In some examples, the anti-migration anchor extends through tissue situated between the plurality of portions of the gastrointestinal device.

The present disclosure pertains to membranous tissue grafts comprising one or more pre-made attachment points. The one or more pre-made attachment points may include pre-made markings and / or pre-made suture holes. The membranous tissue grafts can be in the form of a tube. The membranous tissue grafts can also be rectangular in shape and can be used in a nerve repair by wrapping the severed or damaged nerve. In some embodiments, the membranous tissue grafts are suitable for repairing severed nerves that have a short gap or no gap with a gap of less than 5 mm between the severed stumps. Accordingly, methods are provided for repairing a damaged or severed nerve by implanting the membranous tissue grafts on to the damaged or severed nerve.

The gastroesophageal collar being submitted for patent intends to primarily prevent the ascension of the fundus above the diaphragmatic plane and also secondarily to improve the function of the Lower esophageal sphincter, thirdly to reduce occurrences of esophageal reflux and thereby hopefully reducing instances of esophageal cancer. It is estimated as high as %20 of the general population has a hiatal hernia experiencing symptoms of acid reflux and making them at higher risk for esophageal cancer. Currently the standard surgical repair of hiatus is fundoplication. The limitations of fundoplication are its high recurrence rate. It often requires a later second procedure to repair / tighten the fundoplication. By using supple bio-inert materials we intend to create a collar that can be left in place, mechanically preventing the ascension of the fundus and improving LES function. We hope to be the first Collar to prevent hiatal hernia and also improve LES function.

An implant which comprises: a housing having a chamber; and a sensor unit; a first membrane covering the chamber at a first pressure side and a second membrane covering the chamber at a second pressure side; the chamber comprises pressure transfer means being in contact to the first and second membrane and to the sensor unit arranged within the chamber between the first and second membrane, wherein a sensor control unit arranged within the housing; wherein the sensor unit is configured to determine a pressure difference between a pressure at the first pressure side of the chamber and a pressure at the second pressure side chamber of the chamber.

Transluminal stents are disclosed herein. In some embodiments stents within the scope of this disclosure may comprise a first flared end, second flared end, and a middle region disposed between the first and second flared ends. The middle region may comprise a concave, curvilinear shape. The middle region may include a first portion, a second portion, and a circumferential ridge disposed between the first and second portions. The first flared end may include a first inner shoulder extending between the middle region and a first crest, a first opening, and a first outer taper extending between the first crest and the first opening. Methods of using the transluminal stents are also disclosed herein.

The present invention relates to a complex surgical device for carrying out an anastomosis in the intestine including:a—a protective device (5) comprising an anchor element consisting of a stent (1) and a flexible outer sheath (2), andb—an introducer (10) comprising at least a first deformable guide tube (12),characterized in that the downstream end of said outer sheath is connected to said first guide tube (12) or to a first connecting piece (11), said outer sheath (2) being folded inside said first deformable guide tube (12), said stent being held in radial compression inside said first deformable guide tube.

An implantable device for the treatment of acid reflux disease has a body including an outer surface adapted to rest against a patient's fundus wall. The device, when implanted in the patient, fills a volume in the patient's abdomen in the cardia area and above the cardia of the patient, when standing. The body prevents the cardia from moving through the diaphragm opening into the thorax, thereby preventing reflux by keeping the abdominal pressure supporting the cardia sphincter muscle. The device may be affixed to stomach tissue. The device may also be invaginated or otherwise indirectly secured in position.

To provide, generally, medical devices and medical device delivery, and particularly, medical devices, systems, and methods for delivering a barrier device within a body lumen of a patient, such as the GI tract.SOLUTION: For example, a barrier device may include a distal self-expanding stent. A tubular barrier may have a proximal end, a distal end, and a lumen extending therethrough. The distal stent may be disposed at the distal end of the tubular barrier. An anchoring self-expanding stent may be disposed at the proximal end of the tubular barrier.SELECTED DRAWING: Figure 1

A double-balloon multi-lumen catheter is disclosed. The catheter comprises an elongate catheter body including a plurality of lumens. The catheter also includes a plurality of occlusion balloons connected to one or more lumens, and one or more entry ports associated with the plurality of lumens. The catheter also includes an attachable catheter hub comprising a plurality of entry ports. The catheter hub is arranged to receive a proximal end of the elongate catheter body and fluidly connect one or more of the plurality of lumens to associated one of more of the plurality of entry ports. The entire length of the catheter body is configured to pass through the working channel of a gastrointestinal endoscope. The catheter hub is configured to be attached to the proximal end of the elongate catheter body allowing endoscope removal from the catheter body without disrupting the balloon position.

The present invention provides a plastic stent comprising: a front end part formed in a tube shape such that an inlet is formed at one side thereof; a central part having one side integrally extending from the front end part; and a rear end part integrally extending from the other side of the central part, and having an outlet formed at the end of a flow path communicating with the inlet, wherein the front end part and the rear end part provide different restoring angles or restoring forces with respect to the central part. In addition, the present invention provides a plastic stent comprising: a front end part formed in a tube shape such that an inlet is formed at one side thereof; a central part having one side formed in a tube shape so as to be integrated with the front end part; a rear end part which is integrally formed in a tube shape on the other side of the central part and which has an outlet communicating with the inlet; and a marker part for encompassing, with a metal material, the outer peripheral surface of at least one or more of the front end part, the central part and the rear end part.

The present invention relates to a stent for introduction into a hollow organ which can be used to provide vacuum sealing of leaks to specific anatomical regions within the hollow organ for the treatment of anastomotic insufficiency.SOLUTION: The stent comprises a radially expandable body 12 having a wall defining an internal fluid passageway 18, a fluid-tight and flexible first layer 20 covering the surface of the wall along its entire circumference and along a first predetermined area, and an elastic and porous second layer 22 covering the outer surface of the wall along its entire circumference and along a second predetermined area and at least partially covering the first layer 20. Further, the first layer 20 is disposed on the wall surface and extends radially through the wall and / or the second layer 22 is mechanically secured to the body 12.SELECTED DRAWING: Figure 1

According to embodiments of the invention, an anchoring system includes a sleeve having an inner surface defining a lumen, a first expandable sealing mechanism disposed along a proximal end of the sleeve, and a second expandable sealing mechanism disposed along the proximal end of the sleeve. The anchoring system further includes roughening material disposed on an outer surface of the sleeve. Expansion of the first and second expandable sealing mechanisms and application of negative pressure to the anchoring system, causes a seal to form between the first and second expandable sealing mechanisms, the outer surface of the sleeve, and an inner surface of a tissue cavity. According to some embodiments, a sleeve body is included with the sleeve, with the first expandable sealing mechanism being disposed at a proximal end of the sleeve body and the second expandable sealing mechanism being disposed at a distal end of the sleeve body.

The present disclosure provides systems and devices for monitoring the pressure within a negative pressure system, such as a suction cannister. In one aspect, the system includes an anchor configured for positioning within an intestine of the patient at the anastomosis site and a source of negative pressure, such as a suction cannister, fluidly coupled to the anchor. A portable alarm device is coupled to the suction cannister and includes a trigger for detecting the pressure therein. A signal device emits a signal when this pressure is above a threshold level to ensure that the anchor remains securely in contact with the walls of the intestines at the anastomosis site. The alarm device includes a handle to allow a patient to grasp and carry the suction cannister, providing critical patient mobility during the recovery period.

A gastrointestinal device (1) comprises an elongate body (2) having a proximal end (21), a distal end (22), a first anchor (31) at the proximal end., and a support structure (4) extending along a longitudinal axis from the proximal end (21) to the distal end (22), The support structure (4) lias a pre-set curvature prior to insertion in a gastrointestinal tract that mimics a curvature of a section of the gastrointestinal tract. The support structure (4) is configured to return to the pre-set curvature after insertion into the gastrointestinal tract to provide conformational stability for the elongate body (2). The gastrointestinal device (1) further comprises at least one further anchor (32), and the support stmcture (4) maintains a defined distance between the first anchor (31) and the at least one further anchor (32),

A bio-compatible material comprising silicone for use in treatment of reflux disease by restricting movement of the cardiac notch of the patient's stomach towards the thoracic diaphragm of the patient by the bio-compatible material being at least partially invaginated by the stomach fundus wall in a position between the thoracic diaphragm of the patient and the fundus wall of the patient.

The present disclosure provides medical devices (400) such as self-expanding stents or tissue lumen stents with an overlapping layer. The medical devices can have a coating or cover disposed over all or a portion of the medical device. The overlapping layer define a doubled back portion at an end of the medical device that includes an elongate section (414) to provide dynamic movement of the end of the medical device relative to a central portion (408) of the medical device.

This invention discloses a woven scaffold for digestive organs adapted to intestinal peristalsis and its weaving method. The scaffold is woven from several main filaments and several auxiliary filaments on a fixture with protruding pins, forming a first end, a second end, and several main body segments between the first and second ends. The main filaments are woven into the end or main body segments to form a columnar scaffold. The auxiliary filaments are wound from top to bottom around the columnar scaffold formed by the main filaments. The total number of main filaments and auxiliary filaments is not greater than the number of protruding pins in the circumferential direction of the fixture. The tail portion of the main filaments is wound parallel to the auxiliary filaments. This invention uses multiple main filaments to form a columnar scaffold, avoiding the problem of easy breakage when weaving with a single main filament. Furthermore, the use of auxiliary filaments wound around the outer circumference of the main filaments improves the radial support force of the scaffold, making it more adaptable to the variability of the intestine and extending its service life.

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.

A stent includes a wire woven into a tubular fence to form a stent body, a plurality of tubular units connected around a longitudinal central axis of the stent body, and a plurality of connection sites configured to connect adjacent tubular units of the plurality of tubular units and arranged along a plurality of circumferences with respect to the longitudinal central axis of the stent body. The plurality of circumferences includes a first circumference having a first radius and a second circumference having a second radius, and the first radius is different in length from the second radius.

The present disclosure provides stents, particularly self-expanding stents, useful for the GI tract, and more particularly, useful for treating esophageal strictures. Preferably, a portion of the stent comprises a textured surface for contact with the esophageal wall tissue to resist stent migration. The elastomer coated medial region provides a barrier to tissue ingrowth, and has an enhanced radial restoring force to maintain an open passageway in a body lumen. Optionally, the stent includes an exterior sheath with a surface pattern, to which the stent couples. A low durometer sleeve, between the stent and body lumen, axial positioning of the stent relative to the body lumen. Consequently, precision in stent placement is provided without tissue damage that could result if positioning motion occurred between the surface texture and the body lumen.

The present invention relates to a stent for introduction into a hollow organ, in particular the gastrointestinal tract, of a human or animal patient., which may be used to provide a vacuum sealing of leaks to a particular anatomic region in the hollow organ, e.g. for the treatment of local anastomosis insufficiencies. Accordingly, a stent (10) for introduction into a hollow organ of the human or animal body, preferably into the gastrointestinal tract, in particular the intestine, is suggested, comprising a radially expandable body (12) having a wall (32) defining an inner fluid passageway (18) from one end of the body (12) to a longitudinally opposing end of the body (12), a liquid-tight and flexible first layer (20), the first layer (20) covering a surface (34, 36) of said wall (32) along its entire circumference and along a first predefined region in a longitudinal direction of said body (12), and a resilient porous second layer (22), the second layer (22) covering an outer surface (36) of said wall (32) along its entire circumference and along a second predefined region in a longitudinal direction of said body (12) and at least partially covering the first layer (20). Furthermore, the first layer (20) is arranged at said wall surface (34, 36) and extends at least partially through said wall (32) in a radial direction and / or the second layer (22) is mechanically secured to the body (12).

Medical devices and method for making and using the same are disclosed. An example medical device may include implantable medical device for use along the biliary and / or pancreatic tract. The implantable medical device may include a tubular member having a first end configured to be disposed within the duodenum of a patient and a second end configured to be disposed adjacent to a pancreatic duct and / or bile duct. The tubular member may have a body including one or more wire filaments that are woven together. The tubular member may also have an outer surface with a longitudinal channel formed therein.

Medical systems for positioning a stent along a tissue pathway are disclosed. A system includes an inner shaft having a lumen, a proximal end coupled to the handle and a distal end coupled to a tip member. The system also includes an outer shaft having a proximal end region and a lumen, wherein at least a portion of the inner shaft extends within the lumen of the outer shaft. The system also includes a stent positioned between an inner surface of the outer shaft and an outer surface of the inner shaft. Further, the tip member includes a first engagement member configured to engage and anchor the tip member to a tissue of the tissue pathway before the stent engages the tissue pathway.

An implantable device for the treatment of acid reflux disease has a body including an outer surface adapted to rest against a patient's fundus wall. The device, when implanted in a patient, fills a volume in the patient's abdomen in the cardia area and above the cardia of the patient, when standing. The body prevents the cardia from moving through the diaphragm opening into the thorax, thereby preventing reflux by keeping the abdominal pressure supporting the cardia sphincter muscle. The device may be affixed to stomach tissue. The device may also be invaginated or otherwise indirectly secured in position.

To provide tissue grafts with pre-made attachment points (points of attachment).SOLUTION: One or more pre-made attachment points may include pre-made markings and / or pre-made suture holes. The membranous tissue grafts can be in the form of a tube. The membranous tissue grafts can also be rectangular in shape and can be used in a nerve repair by wrapping the severed or damaged nerve. The membranous tissue grafts are suitable for repairing severed nerves that have a short gap or no gap with a gap of less than 5 mm between the severed stumps. Accordingly, a damaged or severed nerve can be repaired by implanting the membranous tissue grafts on to the damaged or severed nerve.SELECTED DRAWING: Figure 1

A method of selecting an intraluminal device. The method is carried out by determining a diameter compatibility of a segment of a hollow organ of a subject and selecting a size of the intraluminal device based on the diameter compatibility of the segment of the hollow organ.