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: Disclosed are an anchoring device and an anchoring apparatus. The anchoring device includes a coupling member and two anchoring members. The two anchoring members are arranged on the coupling member at intervals in a first direction. A dimension of the anchoring member in a second direction is a first dimension, the second direction is perpendicular to the first direction. The anchoring member is configured to switch between a first configuration and a second configuration. When the anchoring member is in the first configuration, a dimension of the anchoring member in a direction perpendicular to the first direction is a second dimension. When the anchoring member is in the second configuration, a dimension of the anchoring member in the second direction is a third dimension, and the third dimension is greater than the second dimension and the first dimension.

Abstract: Provided is a multifunctional high-frequency electric knife, comprising processing portion, sheath portion, and operating portion. The processing portion is provided with an electrode and a clip component; the electrode is provided with a hollow tubular portion; the electrode can be pushed out or retracted relative to far end of the sheath portion; the clip component can be pushed out or retracted relative to far end of the sheath portion; the sheath portion is disposed at near end of the processing portion and comprises a hollow pull rod and a spring tube; and the operating part is located at near end of the sheath portion and comprises a high-frequency joint connected to the electrode by wire, a component driving, by operating line, the electrode to move, a member driving the hollow pull rod to move, and a liquid inlet allowing liquid to flow to the hollow tubular portion of the electrode.

Abstract: Dual-channel injection bipolar high frequency electrosurgical knife comprises an electrode part, a main part and an operation part. The electrode part comprises an active electrode, an insulating part and an inert electrode. The active electrode has a hollow tubular portion, which can cut the target lesion tissue when power on. The main part comprises a protective tube, an insulation sheath and an insulation coated screw, connector, seal. The insulation coated screw includes a conductive screw and an insulating coating on the surface. The operation part comprises a positioning structure, a slider, a core rod, a connection sheath, an infusion tube and a connection cable. 6% Luer tapers are attached to both the positioning structure and the infusion tube. Liquid can flow out from the dual-channel, a solution can be injected in submucosal layer to elevate the mucous membrane tissue or clean hemorrhage site.

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: Provided is a medical device implantation apparatus, comprising: an outer sheath, connected to a first portion of a handle and extending from a proximal end to a distal end; a middle sheath, the middle sheath being arranged in the outer sheath, and the middle sheath being connected to a second portion of the handle; an inner sheath, the inner sheath being allowed to pass through the middle sheath, the inner sheath being connected to a third portion of the handle, and the inner sheath being movable relative to the outer sheath; outer casings, with at least two outer casings being provided, and a distal end of the inner sheath being respectively fixedly connected to the outer casings; and a medical device, arranged around the inner sheath and partially accommodated in the outer casings.

Abstract: A traction apparatus, comprising a clip portion (2) and a traction portion (1), the traction portion containing a closed traction structure (11); the closed traction structure being made from an elastic material; the clip portion comprising a main clip body (23, 25) and a clip arm (24, 26); the main clip body being capable of passing through a biopsy channel (4) of an endoscope (3), the clip arm being capable of clip the closed traction structure. Also disclosed is a traction ring used for the traction apparatus, the traction ring being a single closed traction structure or being formed by connecting several closed traction structures, the traction ring being made from an elastic material.

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: 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: A medical drainage stent that includes a stent body, and a proximal portion and a distal portion that are located at two ends of the stent body for connecting a first tissue wall and a second tissue wall in a juxtaposing manner. The stent body is fixed between the first tissue wall and the second tissue wall to provide a drainage channel. The proximal portion of the stent has N extension portions, where a fixed end of the extension portion is fixedly connected with an edge of a proximal end of the stent body, and the other end of the extension portion is a free end in a free state. Structures of the N extension portions at least partially protrude from the stent body in a radial direction, so that the proximal portion of the stent is fixed on the first tissue wall, where N is a positive integer.

Abstract: Disclosed is a stone extraction basket, comprising a mesh basket (1), an outer tube (2) and an operation portion (10), wherein the mesh basket (1) is connected to the operation portion (10), and the operation portion (10) can control the mesh basket (1) to move; a proximal end of the outer tube (2) is connected to the operation portion (10), the outer tube axially extends from the proximal end to a distal end, and the distal end of the outer tube (2) is provided with a double lumen end cap (5); and a guide wire (4) passing through one lumen channel (B7) of the double lumen end cap (5), and the mesh basket (1) passes through the other lumen channel (A6) of the double lumen end cap (5). The stone extraction basket solves the existing technical problem of the mesh basket being hampered from removing a calculus and being withdrawn from the biliary tract because the guide wire is driven by the end cap at the distal end of the mesh basket.

Abstract: An intraluminal stent (1) and a preparation method therefor are provided. The intraluminal stent (1) includes at least one sub-stent. The sub-stent includes at least a first wire (4) extending along a first spiral direction and at least a second wire (5) extending along a second spiral direction, and the first wire (4) and the second wire (5) extend in different directions to form several wire intersection points. The intraluminal stent (1) has several wrapped portions (2) to wrap two corresponding wire tail ends. A wrapping connector (3) is disposed at a periphery of the wrapped portion (2). Two end portions of the wrapping connector (3) are firmly connected to regions corresponding to two ends of the wrapped portion (2). The two wire tail ends of the wrapped portions (2) are wrapped by using the wrapping connector (3). The stent (1) is less harmful to intraluminal tissues and a relatively strong tensile resistance.

Abstract: Provided is a release device for medical tissue clips, including an outer tube provided with a release member, a control wire, and at least one tissue clip; wherein the release member is connected to the distal end of the control wire; the at least one tissue clip is movably connected to the release member and the control wire; the tissue clip includes a clip base and a clip piece which is movably disposed inside the clip base; the tissue clip is in a locked state when the clip piece is retreated to the proximal end, and in an opened state when the clip piece moves forwards to the distal end; the clip base includes an elastic member which is in a compressed state when being located in the outer tube and in an opened state upon detachment from the outer tube to abut against an end of the outer tube.

Abstract: A medical connecting device, having a proximal end and a distal end; the medical connecting device includes an insulating layer (3, 123, 222, 322) and a spiral tube (2, 124, 223, 323), the insulating layer (3, 123, 222, 322) covering the outermost layer of the whole device; the spiral tube (2, 124, 223, 323) has a conductive hollow tubular structure; and the spiral tube (2, 124, 223, 323) has a spiral structure, and a pitch of the spiral structure gradually changes in the direction from the proximal end to the distal end. The medical connecting device is able to integrate multiple functions such as electricity conducting, liquid passage, powder spraying, negative pressure suction, sealing, insulation, and support.

Abstract: The limiting device includes a clamping portion and a movable portion; the clamping portion and the movable portion are both annular structures, two ends of the clamping portion and the movable portion are respectively connected to form a connected double-ring structure, and the ring diameter of the movable portion is larger than that of the clamping portion. The limiting device is disposed on a core rod, the clamping portion and the core rod are in interference fit, and the movable portion and the core rod are in clearance fit. When the movable portion cooperates with the core rod, the limiting device may slide relative to the core rod; when the clamping portion cooperates with the core rod, the limiting device and the core rod are in a fixed state, and the limiting device cannot slide relative to the core rod, thus achieving the purpose of limiting.

Abstract: Provided is a medical device implantation apparatus, comprising: an outer sheath (4), connected to a first portion of a handle (6) and extending from a proximal end to a distal end; a middle sheath (3), the middle sheath (3) being arranged in the outer sheath (4), and the middle sheath (3) being connected to a second portion of the handle (6); an inner sheath (2), the inner sheath (2) being allowed to pass through the middle sheath (3), the inner sheath (2) being connected to a third portion of the handle (6), and the inner sheath (2) being movable relative to the outer sheath (4); outer casings (1), with at least two outer casings being provided, and a distal end of the inner sheath (2) being respectively fixedly connected to the outer casings (1); and a medical device, arranged around the inner sheath (2) and partially accommodated in the outer casings (1). The medical device can be released by manipulating the third portion of the handle (6).