Abstract: The present disclosure relates to the technical field of medical devices, and in particular to catheter implant systems and included associated device, prosthetic heart valves and method. The interventional delivery system included includes a catheter assembly and a control handle connected to the catheter assembly, the catheter assembly has opposing distal and proximal ends and includes an inner sheath and an outer sheath slidably engaged with each other, the outer sheath includes a loading section and a sheath section in sequence from the distal end to the proximal end, the loading section is configured to enclose and keep the interventional device in a compressed state; the control handle includes a main handle and an auxiliary handle slidably fitted over the inner sheath, the proximal end of the inner sheath is connected to the main handle and the proximal end of the outer sheath is connected to the auxiliary handle.

Abstract: A waste material discharge device comprises a material bin, a trigger connecting rod, and a material blocking plate, wherein a cavity is formed in the material bin, a material inlet and a material outlet are formed in the material bin, the material inlet, the cavity, and the material outlet are sequentially communicated to form a material discharge channel, the material inlet is used for the entry of waste materials of a 3D printer, and the material outlet is configured to communicate with an outside of the 3D printer to enable the waste materials to be discharged to the outside of the 3D printer along the material discharge channel. A first end of the trigger connecting rod rotates under the push of a printing head, when the trigger connecting rod rotates, a second end thereof pushes the material blocking plate in the material bin to rotate.

Abstract: The present application provides a preparation method for a biological membrane, and a product and an application thereof. The preparation method for the biological membrane comprises the following steps: (1) treating animal cavity tissues by using a collagenase inhibitor; (2) removing a membrane layer which accounts for more than 40% of the total fat content of the animal cavity tissues; (3) using a first enzyme solution to treat a product obtained in step (2); (4) using an alkali solution to treat a product obtained in step (3); (5) using a decellularized solution to treat a product obtained in step (4); (6) using a degreasing fluid solution to treat a product obtained in step (5); (7) using a second enzyme solution to treat a product obtained in step (6); and (8) using supercritical carbon dioxide to clean a product obtained in step (7) to obtain a biological membrane.

Abstract: A holder for a prosthetic valve includes a base, claw locks and a holding handle. The base has opposite bottom and top sides. The prosthetic valve assembly area is defined on the bottom side. The claw locks are connected to the base and located on the bottom side of the base. The claw locks are arranged around the prosthetic valve assembly area. The holding handle is connected to the base and is located on the top side of the base. In this solution, the claw locks are in a clearance fit with the connecting ears or mesh gaps to facilitate the connection or disconnection between the holder and the prosthetic valve.

Abstract: The present invention discloses a method for detackifying organic contaminants in the process of pulping and papermaking and a composition used for the same. Specifically, the invention discloses that the water circulation system of pulping and papermaking process can be provided with non-ionic cellulose ether and cationic coagulant in lower amount, through which, the deposition of organic contaminants can be inhibited under the synergistic action of pre-coagulation and detackification.

Abstract: The present invention discloses a method for detackifying organic contaminants in the process of pulping and papermaking and a composition used for the same. Specifically, the invention discloses that the water circulation system of pulping and papermaking process can be provided with non-ionic cellulose ether and cationic coagulant in lower amount, through which, the deposition of organic contaminants can be inhibited under the synergistic action of pre-coagulation and detackification.

Abstract: A supercritical carbon dioxide-assisted solid-phase grafting modification method for polypropylene, comprises swelling polypropylene for 0.5 to 10 hours in supercritical carbon dioxide having dissolved vinyl monomer and an initiator, then slowly relieving the pressure; moving the polypropylene that has undergone the swelling process into a reaction kettle, and adding xylene as an interface agent, the mass of xylene being 1% of the polypropylene; increasing the temperature to between 65° C. and 165° C. under normal pressure, and reacting 1 to 10 hours to obtain modified polypropylene; the swelling permeation temperature during the swelling process is from 31° C. to 60° C., the swelling pressure is from 7.5 to 12 MPa; the initiator is an azo compound or a peroxide. In the present method, the grafting rate reaches 5.4%, the thermal property, polarity, and mechanical property all improve substantially, and hydrophilic property is substantially enhanced.

Abstract: The invention is directed to methods and compositions for reducing the deposition of pitches and stickies in a papermaking process. The method involves introducing an anionic glycerol-based polymer to the papermaking process. This anionic polymer prevents the pitches and stickies from depositing and agglomerating in papermaking processes.

Abstract: The invention is directed to methods and compositions for reducing the deposition of pitches and stickies in a papermaking process. The method involves introducing an anionic glycerol-based polymer to the papermaking process. This anionic polymer prevents the pitches and stickies from depositing and agglomerating in papermaking processes.

Abstract: The invention is directed towards methods and compositions for treating slurry to better dewater alumina trihydrate precipitated from the Bayer process. The method comprises using a product comprising the combination of at least two surfactants together with an optional coupling agent to treat the alkaline slurry with certain amount of alumina trihydrate present. Synergistic effects between binary combinations of nonionic and anionic surfactants result in more efficient dewatering aids for alumina trihydrate slurry when combinations of such surfactants are applied. A coupling agent may be used in formulations to reduce viscosity of such surfactant combinations, allowing the practical application of such products.

Abstract: The invention is directed towards methods and compositions for treating slurry to better dewater alumina trihydrate precipitated from the Bayer process. The method comprises using a product comprising the combination of at least two surfactants together with an optional coupling agent to treat the alkaline slurry with certain amount of alumina trihydrate present. Synergistic effects between binary combinations of nonionic and anionic surfactants result in more efficient dewatering aids for alumina trihydrate slurry when combinations of such surfactants are applied. A coupling agent may be used in formulations to reduce viscosity of such surfactant combinations, allowing the practical application of such products.

Abstract: This invention relates to deployable hemostatic materials comprising chitosan fibers upon which hemostatic microporous polysaccharide microspheres and a medicament or biologically active substance are deposited. The hemostatic materials are suitable for use in controlling active bleeding from artery and vein lacerations, sealing femoral artery punctures, and controlling oozing from tissue.

Abstract: The present invention provides medicament-containing cyanoacrylate adhesive formulations for sealing wounds.