248results about "Stomach" patented technology

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 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.

The invention provides an intestinal postoperative fistula-proof device which comprises a fistula-proof membrane assembly and a degradable near-end ring mechanism, and the fistula-proof membrane assembly comprises a membrane cylinder and a first storage cavity; wherein the first storage cavity is formed in one end of the thin film cylinder, the first storage cavity is formed by turning over one end of the thin film cylinder, a degradation type near-end ring mechanism is arranged in the first storage cavity, and the end, away from the first storage cavity, of the thin film cylinder is fixedly connected with a far-end supporting ring; the degradable near-end ring mechanism is matched with the film cylinder to be fixed to an intestinal canal in a sewing mode, then the far-end supporting ring is moved to drive the film cylinder to completely cover an anastomotic stoma, the far-end supporting ring is used for supporting the film cylinder so that intestinal contents can be isolated from making contact with the anastomotic stoma, the anastomotic stoma is fully protected, and the anastomotic stoma is prevented from being damaged. And the whole anti-fistula device is a smooth channel, so that the resistance of intestinal contents is reduced, and the risk that the intestinal contents fall off in advance is effectively reduced.

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.

A mesh element having a mesh gauge selected to control flow of materials therethrough. The mesh element is implantable into an anatomical structure upstream of a body passage or within a body passage to control flow of materials through the body passage. The mesh element may be coupled to a support structure to facilitate anchoring of the mesh element in place relative to the body passage. The support structure may have a lumen defined therethrough to allow flow of materials through the body passage, with the mesh element regulating the flow of materials into the lumen. The mesh element alternatively may be directly coupled to an anatomical structure upstream of a body passage to regulate or determine flow of materials through the body passage.

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.

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.

An illustrative endoluminal implant having an elongated tubular member. The elongated tubular member having a stent and a retrieval suture interwoven with the stent. The retrieval suture including a first suture loop extending about a circumference of the stent and adjacent to a suture retrieval loop and a second suture loop extending about a circumference of the stent and longitudinally spaced from the first suture loop. The first and second suture loops coupled via one or more interconnecting segments. At least one of the first or second suture loops has an arc length of less than 270° of the circumference of the stent.

An apparatus for treating obesity in a human or animal mammal patient. The apparatus comprising a first volume filling device segment and a second volume filling device segment. The first and second volume filling device segments are adapted to be assembled into an implantable volume filling device of a controlled size. Each one of the first and second volume filling device segment comprises at least one interconnecting structure. The interconnecting structure of the second volume filling device segment is adapted to be formed fitted, such that the first and second volume filling device segment can be assembled into the volume filling device. The assembled volume filling device is adapted to be at least substantially invaginated by a stomach wall portion of a patient, with the outer surface of the device resting against the stomach wall, such that the volume of the food cavity is recuced in size.

Medical devices and methods of using medical devices are disclosed herein. An example medical device includes a skeleton including an inner surface, an outer surface, a proximal region, a distal region, a lumen extending from the proximal region to the distal region, and a retention member extending radially away from the outer surface. The retaining member has a distally facing surface and a proximally facing surface. A membrane is disposed inside the lumen of the tubular skeleton, and the membrane is secured to the inner surface of the tubular skeleton at a first circumferential attachment region and a second circumferential attachment region. Further, the membrane is not attached to the inner surface of the tubular scaffold between the first circumferential attachment region and the second circumferential attachment region to define a tissue ingrowth region between the inner surface of the tubular scaffold and the outwardly facing surface of the membrane.

Medical devices and methods for using medical devices are disclosed. An example medical device includes a scaffold including an inner surface, an outer surface, a proximal end region, a distal end region, a lumen extending from the proximal end region to the distal end region, and a retention member extending radially away from the outer surface. The retention member has a distally facing surface and a proximally facing surface. A membrane is disposed within the lumen of the tubular scaffold and is secured to the inner surface of the tubular scaffold at a first circumferential attachment region and at a second circumferential attachment region. Further, the membrane is unattached to the inner surface of the tubular scaffold between the first circumferential attachment region and the second circumferential attachment region to define a tissue ingrowth region between the inner surface of the tubular scaffold and an outwardly-facing surface of the membrane.

A medical device for treating a body lumen, such as a medical stent, includes an expandable scaffold configured to shift from a radially collapsed state to a radially expanded state. The stent includes a coating disposed along the outer surface of the expandable scaffold in which a portion of the coating includes a plurality of anti-migration members and one or more preferential separation regions. Each preferential separation region is configured to permit first and second regions of the coating to separate from one another along the preferential separation region therebetween as the expandable scaffold shifts from the radially collapsed state to the radially expanded state.

An implantable medical device comprising an elongated body having a first end, a second end, and a lumen extending therebetween, a saddle region defined between the first end and the second end, a retention member at the first end, the second end, or both, wherein the retention member extends substantially traverse to a longitudinal axis of the implantable medical device and is configured to deform responsive to an application of a force along a longitudinal axis of the implantable medical device.

A duodenum built-in jejunum cannula releasing system and a use method therefor, the system including: implanting device, pushing assembly, fixing line and releasing line. The implanting device includes storage pipe shell, releaser, membrane pipe and stent; the storage pipe shell is tubular and provided with near-end opening and far-end opening; the membrane pipe and the stent which are to be released are arranged in the storage pipe shell in folded state; the pushing assembly includes push-pull guiding wire, inner pipe, middle pipe and outer pipe which are sleeved with one another from the inside out in sequence and may move relative to one another.

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 illustrative stent may comprise an elongated tubular member having a first end and a second end and an intermediate region disposed therebetween. The elongated tubular member configured to move between a collapsed configuration and an expanded configuration. The elongated tubular member may comprise at least one twisted filament, such as a knitted filament having a plurality of twisted knit stitches with intermediate rung portions extending between adjacent twisted knit stitches, or a plurality of helical filaments twisted with a plurality of longitudinal filaments.

The invention relates to a magnetic control self-conformal intestinal stent and a dynamic monitoring system, and belongs to the technical field of medical instruments, and the magnetic control self-conformal intestinal stent comprises a biodegradable main skeleton, a magnetic driving unit, a pressure sensing array and an in-vitro control device. A magnetic response material is embedded into the main framework, and form regulation and control and degradation rate control are realized through an in-vitro magnetic field; the flexible sensing array monitors intestinal wall pressure in real time, and the self-adaptive structure is linked to dynamically adapt to the intestinal tract curved surface. The in-vitro device integrates magnetic field adjustment and data processing, and supports precise positioning of the support and intelligent adjustment of the attaching force. The system improves the stability in a complex intestinal environment through magnetic coupling driving and multi-mode monitoring, early warns abnormal risks in real time, and avoids the rigid defect and monitoring lag problems of a traditional stent. The biodegradable material is combined with intelligent control, the degradation process and tissue repair are synchronized, a safe and effective treatment scheme is provided for diseases such as intestinal obstruction, and the treatment effect of a patient is improved.

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 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.

Systems and methods are provided for monitoring a bypass device for protecting an intestinal anastomotic stoma. The system includes a pump, one or more fluid inlet lines fluidly coupled to the pump and the negative pressure chamber of the bypass device, and one or more sensors configured to measure data indicative of a pressure within the negative pressure chamber. A controller operably coupled to the pump and the one or more sensors may be programmed to actuate the pump to create a vacuum within the negative pressure chamber to draw intestinal tissue toward the bypass device to anchor the bypass device at a target location upstream of the intestinal anastomotic stoma. The controller may also compare the pressure within the negative pressure chamber to a predetermined pressure range and adjust the pump to maintain the vacuum within the predetermined pressure range if the pressure falls outside the predetermined pressure range.

An implantable apparatus for treating reflux disease in a human or animal mammal patient, the implantable apparatus being configured to be fixated to the stomach of the patient and comprising two or more implantable movement restriction device segments, wherein each implantable movement restriction device segment is provided with at least one assembly element that fits with at least one assembly element of another of said two or more implantable movement restriction device segment, so the two or more implantable movement restriction device segments by said assembly elements can be assembled into an implantable assembled movement restriction device.

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 illustrative endoluminal implant having an elongated tubular member. The elongated tubular member having a stent and a retrieval suture interwoven with the stent. The retrieval suture including a first suture loop extending about a circumference of the stent and adjacent to a suture retrieval loop and a second suture loop extending about a circumference of the stent and longitudinally spaced from the first suture loop. The first and second suture loops coupled via one or more interconnecting segments. At least one of the first or second suture loops has an arc length of less than 270° of the circumference of the stent.

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