An end point closing wall forming device of an extrusion type underground diaphragm wall comprises a main body (1) and a vibration water spraying device. The vibration water spraying device is fixedly disposed inside the main body (1). The end point closing wall forming device of an extrusion type underground diaphragm wall further comprises a separation device. The separation device is movably sheathed on the outer side of a short edge (11) of the main body (1). Also provided is a method for operating an end point closing wall forming device of an extrusion type underground diaphragm wall.

An end point closing wall forming device of an extrusion type underground diaphragm wall comprises a main body (1) and a vibration water spraying device. The vibration water spraying device is fixedly disposed inside the main body (1). The end point closing wall forming device of an extrusion type underground diaphragm wall further comprises a separation device. The separation device is movably sheathed on the outer side of a short edge (11) of the main body (1). Also provided is a method for operating an end point closing wall forming device of an extrusion type underground diaphragm wall.

A method for manufacturing a one-piece element defining a lost formwork for forming drill guides, includes mixing a volume of hydraulic binder including a first volume of water and a second volume of a bonding element and a volume of an organic base; molding to obtain a one-piece element including at least one cylindrical portion with a radius of at least 40 cm; drying the mixture molded forming a one-piece element, and recessing a central portion of material of the one-piece element in a central zone of the cylinder portion to form a guide.

A method for manufacturing a one-piece element defining a lost formwork for forming drill guides, includes mixing a volume of hydraulic binder including a first volume of water and a second volume of a bonding element and a volume of an organic base; molding to obtain a one-piece element including at least one cylindrical portion with a radius of at least 40 cm; drying the mixture molded forming a one-piece element, and recessing a central portion of material of the one-piece element in a central zone of the cylinder portion to form a guide.

Catheter blood pumps that include an expandable pump portion. The pump portions include an collapsible blood conduit that defines a blood lumen. The collapsible blood conduits include a collapsible scaffold adapted to provide radial support to the blood conduit. The pump portion also includes one or more impellers.

Catheter blood pumps that include an expandable pump portion. The pump portions include an collapsible blood conduit that defines a blood lumen. The collapsible blood conduits include a collapsible scaffold adapted to provide radial support to the blood conduit. The pump portion also includes one or more impellers.

An end point closing wall forming device of an extrusion type underground diaphragm wall comprises a main body (1) and a vibration water spraying device. The vibration water spraying device is fixedly disposed inside the main body (1). The end point closing wall forming device of an extrusion type underground diaphragm wall further comprises a separation device. The separation device is movably sheathed on the outer side of a short edge (11) of the main body (1). Also provided is a method for operating an end point closing wall forming device of an extrusion type underground diaphragm wall.

An end point closing wall forming device of an extrusion type underground diaphragm wall comprises a main body (1) and a vibration water spraying device. The vibration water spraying device is fixedly disposed inside the main body (1). The end point closing wall forming device of an extrusion type underground diaphragm wall further comprises a separation device. The separation device is movably sheathed on the outer side of a short edge (11) of the main body (1). Also provided is a method for operating an end point closing wall forming device of an extrusion type underground diaphragm wall.

Catheter blood pumps that include an expandable pump portion. The pump portions include a collapsible blood conduit that defines a blood lumen. The collapsible blood conduits include a collapsible scaffold adapted to provide radial support to the blood conduit. The pump portion also includes one or more impellers.

Catheter blood pumps that include an expandable pump portion. The pump portions include a collapsible blood conduit that defines a blood lumen. The collapsible blood conduits include a collapsible scaffold adapted to provide radial support to the blood conduit. The pump portion also includes one or more impellers.