9results about How to "Reduce postoperative complications" patented technology

The application provides a universal connection structure of an electric resectoscope, a laser scope and a shaving scope, and belongs to the technical field of medical devices, and comprises the following: a Z-shaped endoscope, which has a device channel at the distal end; an inner sheath, which is connected with a first connector at the distal end, and the proximal end and the distal end of the first connector are respectively provided with a first connecting part and a second connecting part, and a containing hole penetrating through both ends is further formed in the first connector; an outer sheath, which is connected with a second connector at the distal end, and the outer end of the second connector is provided with a third connecting part, the third connecting part is detachably connected with the first connecting part, and a water inlet valve and a water outlet valve, which are in communication with the inside of the second connector, are connected to the peripheral side of the second connector; and an adapter pipe, which is respectively provided with a fourth connecting part and a fifth connecting part at both ends, and the fifth connecting part is used for detachable connection with the third connecting part. When the operation mode is changed in the operation, the outer sheath and the endoscope do not need to be taken out and replaced, the universal electric resection ring, the laser fiber, the shaving cutter head and the cold knife device of a conventional size can be installed, and the diameter of the outer sheath is reduced.

This invention relates to the field of medical device technology, specifically to a fixation brace for postoperative repair of lateral collateral ligament injury of the ankle joint. It includes a bionic support shell conforming to the dorsum of the foot, ankle, and heel. The bionic support shell comprises a dorsum segment, an ankle segment, and a heel segment conforming to the dorsum of the foot, ankle, and heel. The bionic support shell is equipped with a multi-dimensional fit and fixation mechanism and an adaptive rehabilitation adjustment mechanism. The multi-dimensional fit and fixation mechanism is electrically connected to a control module, which is also electrically connected to the adaptive rehabilitation adjustment mechanism. The multi-dimensional fit and fixation mechanism includes an arch support component, a circumferential tightening component, and a heel limiting component. The control module is used to adjust the fixation force of the multi-dimensional fit and fixation mechanism, simultaneously and in conjunction with adjusting the range of motion limits of the adaptive rehabilitation adjustment mechanism. This invention achieves precise multi-point fit and fixation of the ankle joint, with precisely adjustable fixation force.

This invention discloses a hysteroscopic plasma snare device, comprising an operating handle, an operating ring electrode rod, a plasma coil, a basket, and a coagulation electrode. The operating ring is fitted onto the operating handle, the electrode rod is located at one end of the operating handle, and the plasma coil is located at one end of the electrode rod. The plasma coil is controllably contracted within the electrode rod. The basket for retrieving excised tissue is located on the plasma coil, and the coagulation electrode is located at the end of the plasma coil, allowing for controlled coagulation at the tissue excision site. Advantages include: supplying physiological saline to the plasma coil at one end of the electrode rod to generate plasma for excision of the affected tissue; ease of use and preservation of the excised tissue; using the basket to hold the excised tissue for complete removal, facilitating pathological analysis; and timely coagulation at the excision site using the coagulation electrode, reducing postoperative complications and avoiding equipment changes during surgery, making it convenient and quick to use.

This application discloses a hydrogel composition, its preparation method, and its applications, relating to the fields of regenerative medicine and biomedical materials technology. The hydrogel composition comprises o-nitrobenzyl alcohol-modified tetra-arm polyethylene glycol and methacrylated hyaluronic acid. The hydrogel composition provided in this application addresses the problems in related technologies that rely on tissue flaps or prostheses for repair, such as large trauma, easy foreign body reaction, asymmetrical shape, unnatural feel, and the inability of tissue engineering materials to be rapidly molded intraoperatively, requiring secondary surgery.

The application discloses a hemorrhoid operation system, which comprises a safe blocking component, an intracavitary radial feed drainage knife group, and an intracavitary negative pressure forced stasis discharge component. The safe blocking component is used for sealing with the intestinal wall to block the downward flow of intestinal excrement. The intracavitary radial feed drainage knife group is used for puncturing a lesion. The intracavitary negative pressure forced stasis discharge component is used for negative pressure action on the punctured lesion to discharge stasis. Thus, the downward flow of intestinal excrement can be blocked to avoid infection of a surgical wound. The cyst at the hemorrhoid lesion is punctured to dredge the stasis discharge channel, and the intracavitary negative pressure forced stasis discharge component is used to forcibly discharge the stasis in the cyst. Compared with traditional hemorrhoid medical instrument operation, the hemorrhoid operation system does not need to cut off the epidermis of the internal hemorrhoid lesion and the large intestinal muscle, has no contraindicated population, and will not cause serious complications such as rectal stenosis and death, and has strong safety and significant clinical application value.

The utility model relates to an anastomosis instrument which comprises a head, a waist and a tail. The head portion is in a hollow pipe shape, one end of the head portion can be connected with a first pipeline, the waist portion is hollow, arranged between the head portion and the tail portion and connected with the other end of the head portion and one end of the tail portion respectively, the waist portion is formed by inwards retracting the other end of the head portion, and the other end of the tail portion is connected with the inner wall of a second pipeline in a matched mode. The inner anti-disengaging piece makes contact with the outer wall of the first pipeline and applies anti-disengaging force to the first pipeline. According to the anastomosis instrument, the direct and stable instrument is provided, due to the arrangement of the waist part, the first pipeline and the second pipeline can be directly and stably anastomosed, liquid backflow and overflow are avoided, suture of a doctor is avoided, the difficulty of pipeline anastomosis is greatly reduced, meanwhile, the inner anti-disengaging piece can effectively prevent the first pipeline from shifting or disengaging, and the anastomosis effect is improved. And the anastomosis stability and safety are greatly improved.

This invention belongs to the field of biomedical materials, and particularly relates to a hydrogel for cartilage repair and its preparation method. The preparation method of the hydrogel includes the following steps: (1) adding cross-linked modified chitosan and 8-O-acetylganoside methyl ester to a collagen solution, adjusting the pH to obtain a collagen polysaccharide solution; (2) adding metal ion microspheres to the collagen polysaccharide solution of step (1), stirring and reacting, then adding microbial transglutaminase for heating and reacting, adjusting the pH to obtain a mixed solution; (3) adding 1,4-butanediol diglycidyl ether and growth factors to the mixed solution of step (2), adjusting the pH, water bath, and dialysis to obtain the hydrogel. This preparation method is simple, and the obtained hydrogel has excellent mechanical strength and adhesion properties.

The embodiment of the utility model provides a tibia positioning and adjusting device, which comprises a joint rod assembly, a connecting rod assembly and a connecting rod assembly, the navigation module comprises a plurality of navigation modules used for assisting in measuring the force line of the knee joint, and the plurality of navigation modules are detachably arranged on different joint rods in the joint rod assembly; the measuring modules are arranged at the two ends of the joint rod assembly and used for assisting in measuring the force line of the knee joint; wherein the plurality of different joint rods are respectively controlled through different rotating switches, so that the navigation module and the measurement module are driven to rotate independently or together with the plurality of joint rods in different dimensions, and the measurement of the knee joint force line is completed. The tibia positioning and adjusting device is simple in structure and used for being combined with a portable navigation system to determine the force line of the knee joint.

The utility model provides a pacemaker sandbag fixing band which comprises a piece of front chest cloth and a piece of back cloth, and the front chest cloth and the back cloth are connected through a first connecting piece. Two front shoulder straps are symmetrically arranged at the top of the chest cloth, two rear shoulder straps are symmetrically arranged at the top of the back cloth, the two front shoulder straps and the two rear shoulder straps are in one-to-one correspondence, and each front shoulder strap is connected with the corresponding rear shoulder strap through a second connecting piece; the chest cloth, the back cloth, the front shoulder straps and the rear shoulder straps are connected through the first connecting pieces and the second connecting pieces to form a vest shape. The chest cloth, the back cloth, the front shoulder straps and the rear shoulder straps can be connected through the first connecting pieces and the second connecting pieces, the connected whole is in a vest shape, the vest shape better conforms to ergonomics, and stability is better.