211 results about "Retraction cord" patented technology

A multi-stages retractable coiling cord is disclosed. The coiling cord comprises a front cover, a spiral spring, a sliding disc, a retraction cord, a positioning bead and a rear cover. The cord is retracted and is positioned once when the sliding disc rotates once. A slight pull will allow the coiling cord to release from engaging.

A plunger-type control handle comprising an elongate housing (42) for controlling the deflection of a distal tip of a catheter. The control handle includes a spool (112) driven by a gear (102), the spool being connected to the proximal end of at least one pull wire (32a). For bi-directional deflection, a second proximal end (32b) of a pull wire is connected to the spool such that when one of the proximal ends is collected by the spool, the other of the proximal ends is released in an equal amount. The gear is operatively coupled to the plunger (92) and engages a gear rack (84) disposed on the control handle housing, such that when there is relative movement between the housing and the plunger, the gear and spool are rotated.

An orthodontic device and an orthodontic method that can prevent an orthodontic treatment from being eccentrically performed while aligning straightly tooth. The orthodontic device includes teeth-attachment unit attached to an orthodontic tooth object; and hook member provided in the teeth-attachment unit and having a connection part of traction unit for orthodontic treatment that is located in the vicinity of a center of resistance (CR) of a tooth. In addition, the orthodontic device includes teeth-attachment unit; and hook member provided in the teeth-attachment unit and having a connection part of traction unit for orthodontic treatment that is located in the vicinity of at least gingiva. Since the teeth-attachment unit of a bracket or a button is substantially horizontal to a traction line of the traction unit, it is possible to perform the orthodontic treatment effectively without eccentric phenomenon in which the tooth and a dental root are tilted.

The invention relates to an electromechanical apparatus, namely a building concealed circuit threader comprising a pull wire (3) which can be inserted into wire conduit (31) openings (32) and can pass through in the wire conduit (31). The building concealed circuit threader is characterized in that the threader is provided with a box-shaped shell (1), the front end of the shell (1) is provided with plugboards (5) matched with the wire conduit openings, the shell (1) is internally provided with a reel (2) for reeling the pull wire (3), a clamping device (4) for the pull wire (3) is arranged between the plugboards (5) and the reel (2), and the clamping device (4) is connected with an electric motor (9) by a drive disk assembly. The building concealed circuit threader has the beneficial effects that the plugboards are inserted into the openings at one part, and one person controls the threader remotely to perform threading operation, thus the labour intensity is low, the working performance is high, and the theader is hopeful to be the necessary apparatus for the building concealed circuit installation.

A device for stretching regions of tissue has at least one first plate-like body and at least one second plate-like body. At least one pulling thread joins said plate-like bodies. One tensioning device is arranged on at least one of said plate-like bodies and being connected to said pulling thread for applying a tensile force to said pulling thread. A guidance serves for guiding said at least one pulling thread during a movement of said at least two plate-like bodies towards one to another.

A catheter has a deflection beam with rectangular cross-section and a single continuous puller wire for predictable on-plane bi-directional deflection. The puller wire extends through spacers on opposite sides of the beam so the puller wire is maintained a predetermined separation distance from the beam surface. Tubular structures of the catheter body and the deflectable section are fused at a joint by C-shaped brackets mounted opposite surface of the beam to form a hollow body with holes into which thermoplastic materials covering the catheter body and the deflectable section can melt to form interlocking nodes. Elongated beam stiffeners can be mounted on the beam to provide different curve and deflection geometries.

A retractable pet leash having an integrated lamp powered by an electric generator. A spool is rotatably mounted inside a housing and a leash cord is coiled on the spool. The spool rotates in a first direction of rotation as the leash cord pays out through an opening provided in the housing. A spring inside the housing is configured to bias the spool toward rotation opposite the first direction of rotation, for retracting the leash cord. A circular toothed gear is attached to the spool for synchronous rotation and a set of speed change gears are configured to translate rotation of the circular toothed gear to turn the generator. A cup gear, having an inner wall provided with a unidirectional teeth groove, engages a speed change gear. A prism plate with pivotally mounted pawls is rotatably mounted in contact with the unidirectional teeth groove, for translating rotation in one direction only, to the generator. The generator outputs direct current to a circuit board. The circuit board includes a set of capacitors for storing electric potential and an electric filter for outputting a stable power supply to energize the lamp.

An absorbent and degradation resistant knitted gingival retraction cord comprising silk is formed from one or more strands by interlocking a plurality of loops. As a whole, the knitted retraction cord comprises at least about 50% silk which, when manufactured so as to have a knitted structure, exhibits resistance to degradation and has the ability to absorb liquid (e.g., an active agent solution). An active agent is impregnated within the one or more strands and/or the plurality of interlocking loops of the knitted retraction cord such that the cord advantageously retains the active agent and resists degradation by the active agent.

The invention discloses a ureteral stent device which comprises an ureteral stent tube and an urethral catheter, wherein a pull line of the ureteral stent tube comprises a magnetic adsorption section and an elastic section for ensuring the length of the pull line to be less than the length from the tail part of a stent tube body to an urethral orifice of a patient after the ureteral stent tube is implanted into the body of the patient when the elastic section in a freely expanded state; the elastic section is an elastic silk thread; the elastic section is arranged between the stent tube body and the magnetic adsorption section; the magnetic adsorption section is a silk thread with interrupted iron cores; the urethral catheter comprises an outer sheath and an inner core; the inner core is sleeved in the outer sheath in a slideable mode; the inner surface of the head part of the outer sheath and the outer surface of the inner core are surrounded into a pull line fixing cavity; and a magnetic part is arranged at the position of the inner core, close to the head part of the inner core. Compared with the existing pull line, in the using process of the ureteral stent device provided by the invention, the pull line is totally retained in the body of the patient and cannot be stained by outside dirts, so that the patient cannot be infected by pollution to the pull line and the patient also cannot feel uncomfortable due to a thread end exposed out of the body of the patient.