194results about "Oesophagi" 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.

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 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 stent configured to be placed in a patient to treat any of a variety of ailments can include a plurality of spaced-apart horizontal supports and a plurality of spaced-apart vertical supports. Each of the plurality of spaced-apart vertical supports can extend from a bottom-most one of the plurality of spaced-apart horizontal supports to top-most one of the plurality of spaced-apart horizontal supports. The stent can further include a plurality of spaced-apart connectors. Each connector can be positioned between a pair of the plurality of spaced-apart horizontal supports and a pair of the plurality of spaced-apart vertical supports.

The invention provides a 4D printing esophageal stent and a preparation method thereof. The esophageal stent comprises a stent main body and a drug-loaded fiber membrane with a core-shell structure, the stent main body is a tubular stent composed of a bionic water lily hollow structure; the diameters of the head end and the tail end of the support body are larger than the diameter of the middle section, and barb structures are arranged on the outer surfaces of the head end and the tail end. The stent main body is a biodegradable shape memory polymer; the drug-loaded fibrous membrane is positioned on the outer surface of the middle section of the stent main body, and the drug-loaded fibrous membrane contains drugs. The 4D printing esophageal stent provided by the invention has excellent compressive bearing capacity and anti-slip capacity, and the drug-loaded fibrous membrane can avoid esophageal restenosis through long-term uniform slow release of drugs, so that the life safety of a patient can be further guaranteed.

An esophageal stent configured to span a stricture may include a tubular body configured to shift between a delivery configuration and a deployed configuration, the tubular body having a first end and a second end. In the deployed configuration: the tubular body defines a first flange portion, a second flange portion, and a saddle portion extending from the first flange portion to the second flange portion; the tubular body further defining an overall longitudinal length extending from the first end to the second end; the first flange portion has a first outer radial extent, and the second flange portion has a second outer radial extent; the first outer radial extent and the second outer radial extent are greater than an outer radial extent of the saddle portion; and a longitudinal length of the saddle portion is at least 50% of the overall longitudinal length of the tubular body.

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.

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.

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.

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.

The disposable esophageal stent system comprises an implantation device and a stent, the implantation device comprises an outer sheath tube, one end of the outer sheath tube is fixedly connected with a handle, a controller with a display screen is arranged on the side wall of the handle, a middle tube penetrates through the outer sheath tube, and the stent is arranged in the middle tube. One end of the middle tube penetrates through the side wall of the handle and is fixedly connected with a push rod, the other end of the middle tube is fixedly connected with a guide head, the guide head is located at one end of the outer sheath tube, the support is compressed and installed in the outer sheath tube, the middle tube is fixedly connected with a push plug, the push plug abuts against the side wall of one end of the support, and the push rod is fixedly connected with the push rod. The side wall of the support is fixedly connected with a linear permanent magnet film strip. In the process of releasing the stent, the stent is axially rotated and adjusted in time, so that the esophageal stent can be stably released along a straight line, twisting displacement of the stent is avoided, and safety and accuracy of stent surgery are improved.

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 application relates to the field of medical device technology, and more particularly to a stent system capable of sustained drug delivery. The stent system comprises a coated stent and an infusion catheter. The coated stent is coated with an inner membrane and an outer membrane, forming a liquid reservoir between the inner and outer membranes for storing drugs. The outer membrane is provided with a liquid outlet, through which the drug can seep out, achieving sustained drug release. The liquid outlet of the infusion catheter is inserted into the liquid reservoir to infuse the liquid reservoir. This stent system can achieve sustained drug release, effectively resolving the problem of drug retention during digestive tract drug delivery.

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 stent delivery device having: a first support rod into which a first movable body is inserted; a fixed magnet; and a second support rod into which a second movable body is inserted, wherein a first driving magnet included in the first movable body and a second driving magnet included in the second movable body rotate relative to each other by means of the control of an external magnetic field at a predetermined angle around an axis in a first direction with respect to the fixed magnet, thereby separating a first coupling piece and a second coupling piece from a first coupling groove and a second coupling groove and enabling a stent to unfold.

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

The invention discloses a disposable esophageal stent and an esophageal camera monitoring system, and relates to the technical field of esophageal stent monitoring equipment.The disposable esophageal stent comprises an esophageal stent holding piece, and an esophageal catheter is installed at one end of the esophageal stent holding piece. The esophagus conveying inner pipe is driven to rotate integrally for steering treatment, a light-emitting lamp bead is installed, accurate retention of the upper portion of the esophagus is supported, the effect of a super-large cover is achieved, and the comprehensive monitoring effect during use is improved. According to the invention, the image monitoring terminal is arranged, a unique system is adopted, during overall installation and release, operation is monitored from the oral cavity side, accurate positioning of the support is supported, and corresponding instructions sent by the system are remotely received, checked and processed on site through the installed image monitoring terminal; esophageal image monitoring data management can be realized through internet cloud management and control, and the intelligent level of esophageal image monitoring data management is improved.

To design a stent including both a covered portion, a non-covered portion and a tubular liner.SOLUTION: An expandable medical device comprises a tubular scaffold and a liner. The tubular scaffold includes an inner surface, an outer surface, a first end region, a second end region, a medial region positioned between the first end region and the second end region, and a lumen extending from the first end region to the second end region. The liner is disposed within the lumen of the tubular scaffold. The plurality of first portion of the liner are secured to and directly abut on a plurality of first regions of the inner surface of the tubular scaffold, thereby preventing tissue ingrowth. The plurality of second regions of the inner surface do not directly abut on the liner thereby defining a tissue ingrowth region between the inner surface of the tubular scaffold and an outer surface of the liner.SELECTED DRAWING: Figure 2

The present disclosure relates generally to the field of medical devices and medical device delivery. In particular, the present disclosure relates to medical devices, systems, and methods for delivering a barrier device within a body lumen of a patient, such as the GI tract. 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.

An apparatus includes a plurality of beads. Each bead includes a housing and a magnet positioned within the housing. The apparatus also includes a plurality of interconnection elements. Each interconnection element movably joins together a corresponding pair of beads. The plurality of beads and the plurality of interconnection elements are sized and configured to form an expandable loop around an anatomical structure in a patient. The apparatus further includes a decoupling element. The decoupling element is positioned along the loop and is configured to selectively release a first portion of the loop from a second portion of the loop in response to application of a threshold force to the at least one decoupling element in a circumferential direction relative to the loop.

The invention relates to a method for estimating a value representative of a first pressure, the first pressure being a fluid pressure in an inflatable element (3) of an implantable medical device (10) comprising a fluid reservoir (5) having a selectively variable volume, the reservoir (5) being able to deform under the effect of a variation in atmospheric pressure, and the inflatable element (3) being in fluid communication with the reservoir (5). The method comprises the steps, implemented by a data processing and control unit (200) of the device, of: a) determining a value representative of a second pressure, the second pressure being a fluid pressure in the reservoir (5); b) estimating the value representative of the first pressure from the value representative of the second pressure and from a parameter (L) that is dependent on a value representative of a maximum variation in fluid pressure in the inflatable element (3) caused by a variation in atmospheric pressure.

To provide an expandable stent having improved anti-migration capability.SOLUTION: 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, where at least 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.SELECTED DRAWING: Figure 2