An intravascular blood pump (1) comprises a catheter (5), a rotor (10), a housing (11) in which the rotor (10) is housed and a flexible drive shaft (12) extending through the catheter (5) and connected to the rotor. The drive shaft (12) comprises at least one outer layer (28) and at least one inner layer (29). The drive shaft (12) is rotatably supported in a proximal bearing (13) located proximally of the rotor (10). The outer layer (28) of the drive shaft (12) is absent or thinned at a location where the drive shaft (12) is supported in the proximal bearing (13).

A tool called a spinner is interposed between a rotary driver and a flexible shaft that is being rotated and moved axially when a duct or chimney is being cleaned by a whip head at the end of the shaft. A tubular shape collar has a home position on the body of the spinner. Grasping and holding the collar at its home position, while the driver rotates, helps steady the driver as the body moves within the collar. To dampen oscillation of the shaft, the collar is moved lengthwise from the body, and along the shaft to a working position where it is held manually. The collar is retained on the body by frictional means. A user can overcome the retaining force and, without using a second tool, slide the collar off the body and along the shaft to the working position, while the spinner is rotating or stationary.

Disclosed is a tendon-sheath driving apparatus. A tendon-sheath driving apparatus according to an embodiment of the disclosure includes: a sheath having a predetermined length, being flexible and having a hollow shape; a tendon placed inside a hollow of the sheath; a rod coupled to an outer surface of a first side of the tendon, and having higher rigidity than the sheath; and a pipe coupled to an outer surface of a first side of the sheath, and having higher rigidity than the sheath, wherein the tendon is moved through the sheath and the pipe as the rod is moved being guided by the pipe while a portion of the rod is placed inside the pipe.

Disclosed is a tendon-sheath driving apparatus. A tendon-sheath driving apparatus according to an embodiment of the disclosure includes: a sheath having a predetermined length, being flexible and having a hollow shape; a tendon placed inside a hollow of the sheath; a rod coupled to an outer surface of a first side of the tendon, and having higher rigidity than the sheath; and a pipe coupled to an outer surface of a first side of the sheath, and having higher rigidity than the sheath, wherein the tendon is moved through the sheath and the pipe as the rod is moved being guided by the pipe while a portion of the rod is placed inside the pipe.

A cable coupling for use with rotating cables is described. The cable coupling comprises a ferrule, a compression die, an adapter die, and a threaded nut cap. In particular versions, the cable coupling is used with high speed drain cleaning cables.

A cable coupling for use with rotating cables is described. The cable coupling comprises a ferrule, a compression die, an adapter die, and a threaded nut cap. In particular versions, the cable coupling is used with high speed drain cleaning cables.

A mechanism for use with multiple latches that are to be released by a single handle and by a single pull. A method for actuating multiple latches with a single handle and by a single pull. A release mechanism for use with multiple latches that are to be released by a single handle and by a single pull, including: a first member slidably received within a housing; a second member rotatably secured to the first member for movement about an axis within the housing and with respect to the first member; a first cable secured to the first member and slidably received within the housing; a second cable secured to the second member and slidably received within the housing; and a third cable secured to the second member and slidably received within the housing, wherein the second cable is shorter than the first cable.

A mechanism for use with multiple latches that are to be released by a single handle and by a single pull. A method for actuating multiple latches with a single handle and by a single pull. A release mechanism for use with multiple latches that are to be released by a single handle and by a single pull, including: a first member slidably received within a housing; a second member rotatably secured to the first member for movement about an axis within the housing and with respect to the first member; a first cable secured to the first member and slidably received within the housing; a second cable secured to the second member and slidably received within the housing; and a third cable secured to the second member and slidably received within the housing, wherein the second cable is shorter than the first cable.

A drive shaft (1, 3) for use with a rotation device (10, 20) includes an outer layer (11, 31) and an inner layer (12, 32). The outer layer is a tubular structure, and the inner layer is accommodated in a space defined by the outer layer and defines a central lumen (13, 33) for receiving therein an external mechanism. The outer layer is rotatable about the central lumen, and the inner layer is rollable relative to both the outer layer and the external mechanism and thus allows rolling friction to occur between the drive shaft and the external mechanism. Such a structure of the drive shaft can reduce friction between the drive shaft and a guidewire as well as loss due to such friction, avoiding failure of the guidewire due to excessive friction between the guidewire and the drive shaft. Therefore, it is ensured that the drive shaft is suitable for use with guidewires commonly used in clinical practice, resulting in improved surgical operability and lower surgical cost. Also disclosed is a rotation device including an instrument (2, 4) and the drive shaft. The instrument is disposed at one end of the drive shaft and is coupled to the outer layer of the drive shaft so as to be able to be driven by the outer layer to rotate.