40 results about "Endoscopic resection" patented technology

A device (1) for treatments of endoscopic resection / removal of tissues, includes: a handpiece apt to be held by an user; an external tubular element (3) having a proximal end, a distal end and a cutting aperture disposed at the distal end; an internal tubular element (4) apt to be pivotally housed in the external tubular element (3) and having a proximal end, a distal end and a cutting tip at its distal end. The device also includes guide elements (5) for rotating and / or oscillating the internal tubular element (4) with respect to the external tubular element (3). The guide elements (5) include an electric motor (19) and electric feeding element for the electric motor (19) and are contained completely inside the handpiece (2).

A resection head for endoscopic resection of tissue comprises an endoscope receiving channel extending therethrough so that an endoscope may be slidably received therein and a first position adjusting mechanism for moving the resection head relative to an endoscope received in the endoscope receiving channel between first retracted position in which a distal end of the endoscope extends beyond a distal end of the resection head and a deployed position in which the distal end of the endoscope is received within the endoscope receiving channel. The resection head also comprises a resection chamber within outer wall of the resection head, at least a first portion of the outer wall being moveable with respect to a second portion thereof to open the resection chamber to an exterior of the resection head and a resection mechanism for resecting tissue received within the resection chamber.< / PTEXT>

Devices and methods useful for manipulating tools at a surgical site are disclosed. The disclosed devices and methods can be useful, for example, for orbiting the distal end of one tool around the distal end of another tool, such as in an endoscopic resection procedure, and / or for rotating a tool or an end effector. In one exemplary embodiment, an endoscopic device is provided and can include an elongate shaft having a first lumen and a second lumen formed therein, each of the first and the second lumens adapted to receive a tool therethrough. A rotatable element can be disposed at a distal end of the elongate shaft, the rotatable element having a lumen formed therein that is associated with the first lumen of the elongate shaft and also having a tool guide that is adapted to receive a tool and that is associated with the second lumen of the elongate shaft. The rotatable element can be configured to rotate on a longitudinal axis thereof such that the tool guide orbits the longitudinal axis of the rotatable element.

Devices and methods useful for manipulating tools at a surgical site are disclosed. The disclosed devices and methods can be useful, for example, for orbiting the distal end of one tool around the distal end of another tool, such as in an endoscopic resection procedure, and / or for rotating a tool or an end effector. In one exemplary embodiment, an endoscopic device is provided and can include an elongate shaft having a first lumen and a second lumen formed therein, each of the first and the second lumens adapted to receive a tool therethrough. A rotatable element can be disposed at a distal end of the elongate shaft, the rotatable element having a lumen formed therein that is associated with the first lumen of the elongate shaft and also having a tool guide that is adapted to receive a tool and that is associated with the second lumen of the elongate shaft. The rotatable element can be configured to rotate on a longitudinal axis thereof such that the tool guide orbits the longitudinal axis of the rotatable element.

The present invention provides apparatus and methods for performing endoscopic mucosal resection and endoscopic submucosal dissection of tissue. In a first embodiment, a catheter having proximal and distal ends and a balloon disposed near the distal end of the catheter is provided. A portion of the distal end of the catheter is configured to be inserted beneath a section of mucosal tissue having a lesion, and the balloon is configured to be inflated to lift the mucosal tissue in an upward direction, thereby facilitating removal of the tissue comprising the lesion. Optionally, a surgeon may advance a needle knife through the catheter to further incise submucosal tissue while the balloon is in the inflated state. If desired, a flushing fluid may be provided to a target site during the procedure.

The invention relates to a discontinuous deformable surgical anastomosing magnetic ring. The discontinuous deformable surgical anastomosing magnetic ring is provided with two magnetic ring bodies, wherein the magnetic ring bodies are the same in structure and opposite in magnetic poles and are arranged in a piling up manner; each magnetic ring body comprises a plurality of arc-shaped magnetic ring blocks and a plurality of connecting pieces; the arc-shaped magnetic ring blocks are movably connected in an end-to-end manner by the connecting pieces respectively through rivets so as to form the magnetic ring bodies; a plurality of discontinuous anastomosing gaps are formed in the upper surfaces of the arc-shaped magnetic ring blocks of one magnetic ring body; a plurality of discontinuous anastomosing gaps are formed in the lower surfaces of the arc-shaped magnetic ring blocks of the other magnetic ring body; the connecting pieces of the two magnetic ring bodies arranged in a piling up manner are oppositely arranged; and the discontinuous anastomosing gaps of the two magnetic ring bodies are arranged in an abutting manner so as to form a discontinuous anastomosing port. The discontinuous deformable surgical anastomosing magnetic ring is light in weight and large in magnetic force, is deformable, and can be easily discharged from a human body, the stability and the involutory accuracy of the magnetic ring are enhanced, and the magnetic losses are reduced; and the discontinuous deformable surgical anastomosing magnetic ring has the characteristics of surgical discontinuous anastomosis, and pressure gradients can be locally formed at the anastomosing port further, so that the tissue healing is better, and the discontinuous deformable surgical anastomosing magnetic ring can be applied to the fields, such as PPH (Procedure for Prolapse and Hemorrhoids), rectal low-order anus-preserving operation, circumcision, colostomy, minimally invasive endoscopic resection and anastomosis, and the like.

The present embodiments provide apparatus and methods for facilitating endoscopic resection of tissue. In one embodiment, the apparatus comprises a first tube having proximal and distal regions, and a working lumen disposed within at least a portion of the distal region. A second tube is disposed circumferentially around at least a portion of the distal region of the first tube. A wire has a distal end that is securely attached to a distal region of the second tube. In use, rotation of the second tube relative to the first tube causes the wire to pass circumferentially over a distal face of the first tube to incise tissue disposed within the working lumen of the first tube.

Embodiments of the invention are directed to a method of excising tissue including injecting fluid into the submucosa to raise targeted tissue. A first electrode is positioned below the targeted tissue within the injected fluid and a second electrode is positioned adjacent a surface of the raised targeted tissue opposite the first electrode. Electrical current is applied between the first and second electrodes and the targeted tissue is excised with the second electrode.

A device (1 ) for treatments of endoscopic resection / removal of tissues, comprising: - a handpiece apt to be held by an user; - an external tubular element (3) comprising a proximal end, a distal end and a cutting aperture disposed at said distal end; - an internal tubular element (4) apt to be pivotally housed in said external tubular element (3) and comprising a proximal end, a distal end and a cutting tip at its distal end. - guide means (5) for rotating and / or oscillating said internal tubular element (4) with respect to said external tubular element (3); said guide means comprising an electric motor. At least one between said handpiece (2) and said guide means (5) is disposable.

The present disclosure relates to a surgical handpiece including an insert removably coupled to the handpiece, wherein the insert is configured to allow aspiration of fluid and tissue through the insert during a surgical procedure. Other surgical handpieces and a method for the removal of tissue during an endoscopic procedure are also disclosed.

A device for treatments of endoscopic resection / removal of tissues, includes:a hand-piece;an outer tubular element extending along a longitudinal axis having a proximal end, a distal end, and a cutting aperture at the distal end;an inner tubular element housed in rotation in the outer tubular element; the inner tubular element extending along the longitudinal axis and having a proximal end, a distal end and a cutting tip at its distal end;guiding elements including an electric motor and electric supply to rotate and / or oscillate the inner tubular element with respect to the outer tubular element;a first engagement keyed substantially at the proximal end of the inner tubular element;a second engagement keyed on the distal end of the motor's outlet shaft to axially slide theron; andat least one spring element to push the second engagement in engagement with the first engagement.

The invention discloses a device for collecting a specimen resected under gastrointestinal endoscopy and belongs to the technical field of medical auxiliary instruments. The device comprises a supporting rod, wherein a shell is fixedly connected with the left end of the supporting rod; a driving device is fixedly connected with the back of the inner wall of the shell, and is in transmission connection with a driven gear through a chain; a rotation device is in clamped connection in the driven gear, and is in clamped connection with the back of the inner wall of the shell; a plurality of supporting plates are fixedly connected with the outer surface of the chain; collection boxes are fixedly connected with upper surfaces of the supporting plates; and two sliding chutes are formed in the lower surface of each collection box. According to the device for collecting a specimen resected under gastrointestinal endoscopy, collection of a plurality of specimens can be completed in one time through interaction of a motor, a driving gear, the chain, the driven gear and the collection boxes, the problem that a patient feels painful due to repeated specimen withdrawing operation of medical staff can be avoided, work of the medical staff is facilitated, and the practicality of the device is further improved.

A device (1) for treatments of endoscopic resection / removal of tissues, includes: a handpiece apt to be held by an user; an external tubular element (3) having a proximal end, a distal end and a cutting aperture disposed at the distal end; an internal tubular element (4) apt to be pivotally housed in the external tubular element (3) and having a proximal end, a distal end and a cutting tip at its distal end; guide element (5) for rotating and / or oscillating the internal tubular element (4) with respect to the external tubular element (3); the guide element including an electric motor. At least one between the handpiece (2) and the guide element (5) is disposable.

The invention relates to a traditional Chinese medicine composition for preventing and treating colorectal adenoma, colorectal adenocarcinoma and relapse after endoscopic resection of colorectal adenoma. The traditional Chinese medicine composition is characterized in that the traditional Chinese medicine composition is prepared from the following main active ingredients in parts by weight: 1-300 parts of poria cocos, 1-300 parts of Chinese yam, 1-300 parts of coix seed, 1-300 parts of Chinese actinidia root, 1-250 parts of duchesnea indica, 1-250 parts of sargentgloryvine stem, 1-250 parts of elecampane and 1-120 parts of honey-fried licorice root. The invention further provides application of the traditional Chinese medicine composition in preparation of medicines for improving immunity of organisms and application of the traditional Chinese medicine composition in preparation of medicines for preventing and treating colorectal adenoma, colorectal adenocarcinoma and relapse after endoscopic resection of the colorectal adenoma.

The present disclosure relates to a surgical handpiece including an insert removably coupled to the handpiece, wherein the insert is configured to allow aspiration of fluid and tissue through the insert during a surgical procedure. Other surgical handpieces and a method for the removal of tissue during an endoscopic procedure are also disclosed.

The present embodiments provide apparatus for facilitating endoscopic resection of tissue. The apparatus comprises proximal and distal barrels. The proximal barrel is adapted to be coupled to an endoscope. A cutting member is disposed within a lumen of the distal barrel and configured to resect a segment of tissue. In one embodiment, a central longitudinal axis of the proximal barrel is radially offset from a central longitudinal axis of the distal barrel, thereby allowing the cutting member to be centered relative to the working lumen of the endoscope. Additionally, the cutting member may comprise at least one viewing window that permits endoscopic visualization of tissue distal to the distal barrel when the cutting member is disposed within the distal barrel.

The invention provides a collection device for excised specimens under a digestive endoscope, and relates to the technical field of specimen collection. The collection device for the excised specimensunder the digestive endoscope comprises a storage tank and a clamping device, the storage tank is internally provided with the clamping device, the clamping device comprises long rods, one ends of the long rods are fixedly connected with the inner wall of the storage tank, the long rods are uniformly distributed on the inner wall of the storage tank, a clamping plate is fixedly connected to the end, away from the inner wall of the storage tank, of the long rod, the clamping plate is in an arc shape, a limiting plate is slidably connected to the side, away from the long rod, of the clamping plate, the limiting plate is in a U shape, and a collecting pipe is slidably connected to the sides, close to each other, of the clamping plate and the limiting plate. According to the collection device, the problems that a traditional storage device is complex in specimen fixing mode, when excised specimens of multiple patients are stored, the storage device needs to be repeatedly opened to store the specimens, and the collection efficiency of the specimens can be greatly reduced through the complex fixing mode are solved.

The linear snare applied under the digestive endoscopy comprises a snare device and an operation assembly, the snare device comprises a resin clamp, a spring, a connecting hole, a metal wire and a baffle, the spring is installed on the resin clamp, the resin clamp is provided with the connecting hole used for fixing the metal wire, and the baffle is arranged at the end of the resin clamp; the operation assembly comprises a snare device base, a resin clamp operation rod, a resin clamp loosening rod, a resin clamp operation rod handle and a metal wire operation handle. By means of the device, the defects of a traditional snare can be overcome, and when the resin clamp is fixed to the intestinal wall mucosa, the other movable end of the metal wire surrounds the bottom of the polyp through the metal wire operation handle; after being tightened, the resin clamp and the metal wire connected with the resin clamp form a closed loop, a polyp as large as possible or a polyp with an asparagus position can be cut off under an endoscope under the electrified condition, the operation is convenient and fast, the operation efficiency is improved, and the operation safety of a patient is also improved.

The invention discloses a collecting device for resected specimens under a gastrointestinal endoscope. The device comprises a base, a sleeve plate is rotationally connected to the left side face of the base, cutter shafts are arranged in four shaft holes formed in the edge of the base, blades are fixed to the right end faces of the cutter shafts, and gears are fixed to the left end faces of the cutter shafts. The collecting device for the resected specimens under the gastrointestinal endoscope is simple in structure, tissue at the specimens is absorbed through a negative pressure pipe, cuttingand separating are conducted through rotation of the blades, the specimen tissue is absorbed in the negative pressure pipe, operation is easy, the position of the negative pressure pipe can be adjusted, the specimen tissue is absorbed conveniently, rotation of the blades is controlled through movement of the negative pressure pipe, swing of the negative pressure pipe and the blades is controlledthrough electromagnets, convenience is brought to operation, cutting of the specimen tissue can be achieved rapidly, the separation effect is good, adhesion does not occur, convenience is brought to extraction, the device is suitable for collection of focus tissue under the gastrointestinal endoscope, and subsequent diagnosis and treatment are facilitated.

The object is to provide an excellent pharmaceutical having an anti-Helicobacter pylori activity. Disclosed is a novel pyridine derivative represented by the general formula (I) or a pharmaceutically acceptable salt thereof, which has a potent antibacterial activity against H. pyroli (Helicobacter pyroli): (I) wherein R represents a linear or branched hydroxyalkyl group having 5 to 10 carbon atoms. Examples of the disease which can be prevented / treated by administration of a pharmaceutical agent comprising the compound include gastritis, gastric ulcer, duodenal ulcer, gastric MALT lymphoma, gastric hyperplastic polyp, development of gastric cancer after endoscopic resection of the early stage of gastric cancer and the like.

A liquid composition includes: An alginic acid or a pharmaceutically acceptable salt thereof and a colloidal polysaccharide. The liquid composition of the present invention is suitable as a medical biomaterial for tissue repair to elevate mucosal tissues of the stomach and intestines during endoscopic resection. More specifically, the present invention relates to a submucosal injectable pharmaceutical liquid composition for use in endoscopic mucosal resection (EMR) or endoscopic submucosal dissection (ESD) for medical applications, including alginic acid having a weight average molecular weight of 100,000 to less than 200,000 or a pharmaceutically acceptable salt thereof and a colloidal polysaccharide. The liquid composition of the present invention is suitable for use as a preparation for submucosal local injection that can maintain mucosal elevation for a long time when injected during endoscopic mucosal resection or endoscopic submucosal dissection.

The present embodiments provide apparatus for facilitating endoscopic resection of tissue. The apparatus comprises proximal and distal barrels. The proximal barrel is adapted to be coupled to an endoscope. A cutting member is disposed within a lumen of the distal barrel and configured to resect a segment of tissue. In one embodiment, a central longitudinal axis of the proximal barrel is radially offset from a central longitudinal axis of the distal barrel, thereby allowing the cutting member to be centered relative to the working lumen of the endoscope. Additionally, the cutting member may comprise at least one viewing window that permits endoscopic visualization of tissue distal to the distal barrel when the cutting member is disposed within the distal barrel.

The present embodiments provide apparatus and methods for facilitating endoscopic resection of tissue. In one embodiment, the apparatus comprises a first tube having proximal and distal regions, and a working lumen disposed within at least a portion of the distal region. A second tube is disposed circumferentially around at least a portion of the distal region of the first tube. A wire has a distal end that is securely attached to a distal region of the second tube. In use, rotation of the second tube relative to the first tube causes the wire to pass circumferentially over a distal face of the first tube to incise tissue disposed within the working lumen of the first tube.

The invention relates to the technical field of medical instruments, and discloses a digestive endoscopy resection specimen collecting device. The device comprises an insertion tube, an outer cylinder is fixedly mounted at the tail end of the insertion tube, one end of the outer cylinder is open, and a connecting plate is slidably arranged on the inner wall of the open end of the outer cylinder; a first sliding plate and a second sliding plate are fixedly mounted at the left and right ends of the right side of the connecting plate; after the first clamping block gradually gets close to the second clamping block and cuts off the specimen tissue, the first clamping block is continuously controlled to move rightwards, at the moment, the first clamping block also pushes the second clamping block to move rightwards, the second clamping block moves rightwards and can push the piston to move rightwards through the push rod, the piston moves rightwards to push and extrude the RNAlater solution in the storage cavity, the RNAlater solution is extruded and can be conveyed into the collecting bag through the conveying pipe, the first one-way valve and the connecting hose, so that the specimen tissue is soaked, the activity of the specimen tissue is guaranteed, the storage time of the specimen tissue is prolonged, and the storage quality of the specimen tissue is improved.

A medical device for facilitating a minimally invasive surgical procedure may include a housing and an arm. The housing may be configured for engagement around an outer circumferential surface of an endoscope and may include a first cavity. The arm may include at least one cutting surface and may be movably received within the first cavity. The arm may be configured to perform a first predetermined movement along at least a first plane at a predetermined frequency.

The invention relates to a transparent cap for assisting digestive endoscopic resection, which includes an insertion tube, a support structure and an adjustment bracket. It is characterized in that the transparent cap also includes a pulling structure for changing the inner diameter of the adjustment bracket, the support structure supports the adjustment bracket, and the support structure and the adjustment bracket are arranged on the same side of the insertion tube, inside or outside the insertion tube . In addition, the transparent cap is also provided with a disposable insulating rubber ring which is placed on the lesion position during use. The variable inner diameter transparent cap of the present invention is a medical device used in assisting digestive endoscopic resection, which can adjust the size of the inner diameter at any time according to the size of the diseased tissue, so it can be more widely used in endoscopic resection of different sizes of diseased tissue Medium, and easy to use.