Abstract: Disclosed is an occluding stent. The occluding stent includes a distal flange occluding body, a proximal flange occluding body, and a connection portion. External surfaces of the distal flange occluding body and the proximal flange occluding body are both provided with a coating. An external surface of the connection portion is wholly or partially provided with a coating. A first occluding coating is provided between the distal flange occluding body and an inner cavity of the connection portion. The present application overcomes the defect that the existing occluder device for closure of an esophagobronchial fistula is harmful to surrounding tissues, makes the device retractable, enhances the safety of the device, and improves life and treatment of patients. A new safe and effective treatment method for an esophagobronchial fistula is provided.

Abstract: A fenestrated duodenal stent includes a stent body enclosed by a meshed sidewall. The stent body is open at two ends and hollow inside. The stent body includes a proximal support segment, a distal support segment, and an opening segment connected between the proximal and distal support segments. The proximal support segment is divided into a front section, a middle section and a rear section that are connected sequentially and coaxially. The front section is of an umbrella shape, and an opening of the umbrella shape faces the middle section. The middle section is of a cylindrical shape, and a diameter of the cylindrical shape is less than a diameter of the opening segment. The rear section is spherical or hemispherical, and a maximum diameter of the rear section is greater than the diameter of the opening segment but not greater than a maximum diameter of the umbrella shape.

Abstract: An endoscope end cap, including a sleeve member, protrusion elements, and a movable sleeve. The sleeve member is connected to the front end of an endoscope, the sleeve member, the protrusion elements, and the movable sleeve are connected in sequence, and the movable sleeve can move freely on the outer surface of the endoscope. When the endoscope is inserted for examination, the end cap is easy to enter and does not scratch the digestive tract since the end cap has a cylinder-like structure which is smooth and has no angularity; when the endoscope is being withdrawn, the movable sleeve moves distally and abuts against the sleeve member, so as to support the protrusion elements to enable the protrusion elements to dilate the inner wall of the intestine, improving the quality of single endoscope examination, and reducing discomfort of a patient, operation risk, and operation time.

Abstract: A cold snare includes a spring tube, a drive wire, and a loop. The cable passes through the spring tube, and can perform reciprocating motion in a direction of a longitudinal axis of the spring tube. The loop is fixedly connected to a distal end of the drive wire. Therefore, when the drive wire performs reciprocating motion in the direction of the longitudinal axis of the spring tube, the loop synchronously performs reciprocating motion in the direction of the longitudinal axis of the spring tube along with the drive wire to achieve the purpose of controlling the loop to enter and exit the spring tube by the drive wire. By using a spring tube as an outer tube, the strength of the spring tube is higher than that of a plastic outer tube of an existing cold snare, which is helpful for the loop to cut when grabbing large polyps.

Abstract: Provided are a silicone stent (100), an implantation system, and a manufacturing method. The silicone stent (100) includes a stent body (110). The stent body (110) includes a mesh frame (112) and a silicone body (111) molded on the mesh frame (112). A circumferentially sealed space (116) is defined within the silicone body (111). A distal end and a proximal end of the silicone body (111) respectively have a distal-end opening (115) and a proximal-end opening (114) that communicate with the space (116). The mesh frame (112) circumferentially covers the silicone body (111), and runs in an axial direction of the silicone body (111). The mesh frame (112) extends from the proximal end of the silicone body (111) to the distal end of the silicone body (111).

Abstract: A double-balloon catheter device for gastrointestinal anastomosis. The double-balloon catheter device for gastrointestinal anastomosis includes a liquid injection assembly, a double-balloon assembly, and a supporting device (15) connecting the liquid injection assembly and the double-balloon assembly. The liquid injection assembly includes a first balloon liquid injection connection port (2), a guide wire connection port (3), and a second balloon liquid injection connection port (4). The double-balloon assembly includes a double-balloon catheter device (5), and includes a first balloon (6) and a second balloon (7) that can expand-and that are respectively disposed on the two ends of the double-balloon catheter device (5). The double-balloon catheter device (5) is provided with a first balloon liquid injection channel (51), a guide wire channel (52), and a second balloon liquid injection channel (53).

Abstract: Provided are a pressure-pump cartridge and a pressure pump, where the pressure-pump cartridge includes a cylinder, where the cylinder has a first chamber, a piston chamber and a second chamber hat are in communication in sequence, and the piston chamber is used for being in sealing fit with a piston. An end of the first chamber remote from the piston chamber is provided with a first opening allowing entry of the piston, and during installation, the piston enters the first chamber by the first opening and enters the piston chamber after passing through the first chamber, and meanwhile, the first chamber is configured to be in a clearance fit with the piston, such that the size of the first chamber is larger than that of the piston.

Abstract: Disclosed are a channel device for surgery and a trigger structure. It aims at improving the problem that the operational efficiency of existing channel devices for surgery is not high. The channel device for surgery includes: a binding cord configured to be wound around a metal net; and a binding wire configured to pass through the binding cord and tighten up the binding cord, so as to compress the metal net, or configured to be pulled away from the binding cord, so as to loosen the binding cord and the metal net. In the trigger structure, different first locking portions are configured to cooperate with a first engaging portion, so as to drive the trolley to slide intermittently relative to the handle, such that a second engaging portion cooperates with different second locking portions, hereby locking the sliding trolley in different positions on the handle.

Abstract: A tissue clamping and closing device for passing through an endoscope, including: a clamp having at least two clamp legs; a control line separably connected to a through hole at the proximal end of the clamp; an axial sheath arranged around the control line; a sleeve configured to accommodate the proximal end portion of the clamp and separably connected to the distal end of the axial sheath; a retainer configured to retain a connection between the sleeve and the axial sheath and implement the separation of the sleeve from the axial sheath through the deformation of the retainer under the action of the control line a control mechanism connected to the proximal end of the axial sheath and the proximal end of the control line; wherein the control line can control the at least two clamp legs of the clamp to be opened or closed through the control mechanism.

Abstract: An overtube device and an endoscope assembly are provided, the overtube device includes an overtube body having a proximal end and a distal end, the overtube body is provided with a bore which extending from the distal end to the proximal end of the overtube body, the bore is configured to allow a passing portion of the endoscope assembly to pass therethrough; a pulling lumen is formed in the overtube body, which extends from the distal end to the proximal end of the overtube body, the pulling lumen is configured to allow a pulling part to pass therethrough, and the distal end of the pulling part is fixed with the distal end of the overtube body.

Abstract: A slide slot type multi-arm clamp includes a handle, a catheter, a clamping portion, a spring tube and a control line. In practical applications, a surgical operator applies an axial thrust and a pulling force to the handle to drive the control line to move, so as to open/close and lock the clamping portion. Moreover, side clamp arms and a clamp base in the clamping portion can be easily separated from the catheter or the spring tube to stay in a human body so as to achieve the functions of hemostasis and tissue suture. The side slot type multi-arm clamp can achieve the effect of minimizing the length of the instrument retained in the human body by the cooperation between the side clamp arms and the clamp base.

Abstract: A thermopuncture stent implantation device has a proximal end and a distal end, the distal end of a front handle is provided with an outer tube, an insulating middle tube is provided in the outer tube, a conductive part is provided in the insulating middle tube, a terminal of the proximal end of the conductive part is connected to an external power source, a boosting tube is provided between the proximal end of the outer tube and the insulating middle tube, the distal end of the boosting tube and the proximal end of the insulating middle tube are connected with each other, the distal end of the conductive part is provided with an insulating part, on which a conductive head connected with the conductive part is distributed; the stent, after being compressed, is located in a space between the distal end of the conductive part and the outer tube.

Abstract: An endoscope end cap, including a sleeve member, protrusion elements, and a movable sleeve. The sleeve member is connected to the front end of an endoscope, the sleeve member, the protrusion elements, and the movable sleeve are connected in sequence, and the movable sleeve can move freely on the outer surface of the endoscope. When the endoscope is inserted for examination, the end cap is easy to enter and does not scratch the digestive tract since the end cap has a cylinder-like structure which is smooth and has no angularity; when the endoscope is being withdrawn, the movable sleeve moves distally and abuts against the sleeve member, so as to support the protrusion elements to enable the protrusion elements to dilate the inner wall of the intestine, improving the quality of single endoscope examination, and reducing discomfort of a patient, operation risk, and operation time.

Abstract: An overtube device and an endoscope assembly are provided, the overtube device includes an overtube body having a proximal end and a distal end, the overtube body is provided with a bore which extending from the distal end to the proximal end of the overtube body, the bore is configured to allow a passing portion of the endoscope assembly to pass therethrough; a pulling lumen is formed in the overtube body, which extends from the distal end to the proximal end of the overtube body, the pulling lumen is configured to allow a pulling part to pass therethrough, and the distal end of the pulling part is fixed with the distal end of the overtube body.

Abstract: A double-balloon catheter device for gastrointestinal anastomosis. The double-balloon catheter device for gastrointestinal anastomosis includes a liquid injection assembly, a double-balloon assembly, and a supporting device (15) connecting the liquid injection assembly and the double-balloon assembly. The liquid injection assembly includes a first balloon liquid injection connection port (2), a guide wire connection port (3), and a second balloon liquid injection connection port (4). The double-balloon assembly includes a double-balloon catheter device (5), and includes a first balloon (6) and a second balloon (7) that can expand-and that are respectively disposed on the two ends of the double-balloon catheter device (5). The double-balloon catheter device (5) is provided with a first balloon liquid injection channel (51), a guide wire channel (52), and a second balloon liquid injection channel (53).