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).

Abstract: Disclosed is a guide wire joint, comprising: a first cover board (1), a second cover board (2), a connecting part (3) connecting the first cover board and the second cover board, and a connecting piece (4); the connecting piece (4) can connect the guide wire joint to a medical device; a side of the first cover board (1) and a side of the second cover board (2), both are away from the connecting part (3), are contacted with or separated from each other to adjust closing and opening of the guide wire joint. When the guide wire joint is closed, a guide wire passage (10) is formed between the first cover board (1) and the second cover board (2) allowing the guide wire to pass through and penetrate into a guide wire cavity of a medical device having a C-shaped groove; and when the guide wire joint is opened, the guide wire can be rapidly detached from the guide wire joint, and can be rapidly separated from the medical device.

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: 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: 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: 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: Provided in the present invention is a three-dimensional precise intracavitary radiotherapy method and system for treating tumours, comprising the steps of: (1) lesion three-dimensional quantitative measurement and analysis of three-dimensional scanning image of the lesion cavity; (2) comprehensive analysis according to lesion three-dimensional quantitative measurement results and lesion characteristics to calculate the three-dimensional distribution of lesion radiation dose; and (3) according to the three-dimensional distribution diagram of radiation dose, selecting appropriate radiation sources and radiation dose to make a stent, and performing three-dimensional precise intracavitary radiotherapy. At the same time, also provided by the present invention is a system for achieving the above radiotherapy method.

Abstract: Provided in the present invention is a three-dimensional precise intracavitary radiotherapy method and system for treating tumours, comprising the steps of: (1) lesion three-dimensional quantitative measurement and analysis of three-dimensional scanning image of the lesion cavity; (2) comprehensive analysis according to lesion three-dimensional quantitative measurement results and lesion characteristics to calculate the three-dimensional distribution of lesion radiation dose; and (3) according to the three-dimensional distribution diagram of radiation dose, selecting appropriate radiation sources and radiation dose to make a stent, and performing three-dimensional precise intracavitary radiotherapy. At the same time, also provided by the present invention is a system for achieving the above radiotherapy method.

Abstract: The invention discloses a one-piece stent implanter, including a front handle and a rear handle; the front end of the front handle is provided with an outer pipe whose top is flexibly connected with a cautery tip, the outer pipe is internally provided with a middle pipe and a stent; the rear handle includes a stainless steel pipe for supporting and an inner pipe positioned in the stainless steel pipe, the top of the inner pipe is fixedly connected to the cautery tip; one end of the middle pipe is mutually touched and connected with one end of the stent, while the other end of the middle pipe is mutually connected with the stainless steel pipe; one end of the stent is close to the cautery tip, with a certain gap kept; when the front handle is retreated along the stainless steel pipe, the outer pipe simultaneously retreats and separates from the cautery tip, positions of the middle pipe and the rear handle remain unchanged, and the stent is automatically released.

Abstract: A disposable remote-injection syringe comprises a syringe needle (2), an inner tube (3), an outer tube (4) and a casing (10), the syringe needle (2) being arranged on one end of the inner tube (3), the inner tube (3) being arranged in the outer tube (4), the outer tube (4) being connected with the casing (10).

Abstract: A disposable remote-injection syringe for use under and an endoscope, comprises a syringe needle (2), an inner tube (3), an outer tube (4) and a casing (10), the syringe needle (2) being arranged on one end of the inner tube (3), the inner tube (3) being arranged in the outer tube (4), the outer tube (4) being connected with the casing (10).

Abstract: An endoscopic injection needle device includes a flexible elongate sheath attached to a handle. Disposed within the sheath is drive shaft having a lumen within and a needle at its distal end. The drive shaft is movable longitudinally within the sheath and is attached at its proximal end within the handle to an actuator. Advancing the actuator extends the needle from the distal end of the device. The actuator includes a locking mechanism that locks it in place with the handle when advanced a certain distance. The locking mechanism includes multiple locking positions wherein the exposed length of the needle corresponds to the distance advanced by the actuator at each locking position. Also included in the distal end of the sheath are a spring coil and a collar. The collar is positioned distal to the spring coil and includes a dome shaped distal end that extends beyond the distal end of the sheath. The drive shaft extends through the spring coil and, when retracted, the needle is housed within the collar.