Abstract: Motor control architecture including a travel, a hoist, and a controller is disclosed. The travel disposed on a main rail having an auxiliary-encoder includes a master-driver and a slave-driver for driving two motors. Each motor has a main-encoder. The hoist drives a rope and calculates a rope length continuously. The controller calculates an anti-sway position command based on the rope-length and a position command. The two drivers perform a full closed-loop computation based on a feedback of one main-encoder, a feedback of the auxiliary-encoder, and the anti-sway position command. Wherein, the master-driver controls one motor based on a speed command generated by the full closed-loop computation and the slave-driver follows the speed command and a torque command of the master-driver to drive another motor; or the two drivers compensate the torque command based on an error value between the feedback of one main-encoder and the feedback of the auxiliary-encoder.

Abstract: Motor control architecture including a travel, a hoist, and a controller is disclosed. The travel disposed on a main rail having an auxiliary-encoder includes a master-driver and a slave-driver for driving two motors. Each motor has a main-encoder. The hoist drives a rope and calculates a rope length continuously. The controller calculates an anti-sway position command based on the rope-length and a position command. The two drivers perform a full closed-loop computation based on a feedback of one main-encoder, a feedback of the auxiliary-encoder, and the anti-sway position command. Wherein, the master-driver controls one motor based on a speed command generated by the full closed-loop computation and the slave-driver follows the speed command and a torque command of the master-driver to drive another motor; or the two drivers compensate the torque command based on an error value between the feedback of one main-encoder and the feedback of the auxiliary-encoder.

Abstract: A positioning device for a stent includes a positioning member including a handle and an extension secured to the handle wherein the handle and the extension are coaxially connected, and an open end of the extension is provided with a hollow first magnetic member; and a stent inserted into a blood vessel and including a first stent member inserted into an artificial blood vessel, the first stent member being separated into two second stent members inserted into the artificial blood vessel wherein a diameter of the first stent member is greater than that of each second stent member, and a diameter of each second stent member is greater than that of the extension, the stent further comprising at least one second magnetic member on the first stent member proximate an open end thereof, the second magnetic member being configured to attach to the first magnetic member.

Abstract: An implantable venous device includes a catheter including a passage; a locking nut including a channel for receipt of the catheter and an annular convex end; an injection seat including a base, a peripheral wall, and a mounting member projecting out of the wall; a connecting tube projecting out of the mounting member and including a bulged central portion and an annular curved outward end with the locking nut secured onto the bulged central portion; a base member including a groove; a housing including a top opening, a clamping portion on a periphery of the top opening, and a passageway through a bottom edge for receipt of the base member with the injection seat fastened in the housing, and with the locking nut in the groove; and an implant member in the top opening and including a peripheral flange urged downward by the clamping portion.

Abstract: An implantable venous device is provided with a catheter including a passage; a locking nut including a channel for receipt of the catheter, and an annular convex end; an injection seat including a base, a peripheral wall, and a mounting member projecting out of the wall; a connecting tube projecting out of the mounting member and including a bulged central portion and an annular curved outward end wherein the locking nut is secured onto the bulged central portion; a base member including a groove; a housing including a top opening, a clamping portion on a periphery of the top opening, and a passageway through a bottom edge for receipt of the base member wherein the injection seat is fastened in the housing, and the locking nut is in the groove; and an implant member in the top opening and including a peripheral flange urged downward by the clamping portion.

Abstract: A process of manufacturing a totally implantable venous device is provided with forming a catheter; securing a locking nut of the catheter is secured to a proximal end of the catheter; forming a base of injection seat; forming a connecting tube to communicate with injection seat and catheter; putting the locking nut on a bulged central portion of the connecting tube; forming a base and a housing by injection molding with the base of injection seat disposed therein and the locking nut disposed in both the housing and the base; forming a space on a top of the injection seat to communicate with the injection seat; and forming an injection membrane in the space to seal the space.

Abstract: An abdominal aortic stent includes a first sub-stent and a second sub-stent each having a front end. The circumference of the front end of each sub-stent is half of the circumference of the abdominal aorta. When the circumference is gradually reduced to a rear end of each sub-stent, it has entered one side of the bilateral femoral arteries. The rear ends of the sub-stents with full circumference of the cross-sectional area of the femoral artery are included therein. The first and second sub-stents are coated with external removable membrane to compress the sub-stents to generate smaller circumferences. When the removable membrane has been removed, the sub-stents are fully extended to reconstruct the vascular flow path.

Abstract: A magnetic coupling assembly has a supporting base, a first disk, a second disk and two piezoelectric actuators. The piezoelectric actuators are mounted between the supporting base and the first disk to drive the first disk to move along an axial direction of the supporting base and to adjust the air gap between the first and second disks. Each piezoelectric actuator has a housing, a pushing arm and at least one piezoelectric block. The pushing arm is mounted slidably in and extends out of the housing along a longitudinal direction parallel with the axial direction of the supporting base and has an end securely connected with the first disk. The at least one piezoelectric block is mounted in the housing and is attached to the pushing arm to push the pushing arm to move along the longitudinal direction.

Abstract: A natural orifice translumenal endoscopic surgery (NOTES) device is provided with a puncture needle including a puncture end, an intermediate protruding safety stud, and a positioning projection on an outer surface; dilator sheaths each including tapered first diameters, an insert member at one end, a limiting shoulder at the other end, a positioning protrusion on an outer surface, and a groove on an inner surface; working sheaths each having a plurality of tapered second diameters and including a positioning protuberance on an outer surface and a trough on an inner surface; and a tool member including a shaft having a graduation on an outer surface, and an operating head threadedly secured to the shaft.

Abstract: An abdominal aortic stent includes a first sub-stent and a second sub-stent, each having a front end and the circumference of the front end of each sub-stent is half of the circumference of the abdominal aorta, and when the circumference is gradually reduced to a rear end of each sub-stent, it has entered one side of the bilateral femoral arteries, wherein the rear ends of the sub-stents with full circumference of the cross-sectional area of the femoral artery are included therein; the first and second sub-stents are coated with external removable membrane to compress the sub-stents to generate smaller circumferences, and when the membrane has been removed, the sub-stents are fully extended to reconstruct the vascular flow path.

Abstract: A totally implantable venous device includes a port, a catheter and a sleeving member. The port includes an arcuate housing having a recess on an inner surface, an opening communicating with the recess and having a flat mouth, an internal chamber, and a base formed of hard plastic and being capable of preventing a needle from being inserted therethrough. The catheter includes an enlarged fastening member at one end. The sleeve is complementarily mounted on a front portion of the enlarged fastening member. The sleeving member is complementarily mounted on the remaining portion of the enlarged fastening member. The recess and the opening form a through hole having an enlarged intermediate portion. The enlarged fastening member has a truncated trapezoidal shape. The sleeving member, the enlarged fastening member and a connector of a receiving seat in the port form a watertight structure at the through hole.

Abstract: A device for positioning a tracheostomy tube includes a tracheostomy tube and a tracheostomy tube protecting membrane. The tracheostomy tube protecting membrane includes a tearing line portion formed at two sides of the tracheostomy tube protecting membrane. The tracheostomy tube protecting membrane is used for mounting in a trachea of a patient to form a positioning path for the tracheostomy tube. The tearing line portion is used for being torn open and removed. The tracheostomy tube protecting membrane is mounted in a trachea of a patient first. The tracheostomy tube protecting membrane can effectively protect the trachea of the patient.

Abstract: A natural orifice transluminal endoscopic surgery (NOTES) device is provided with a puncture needle including a puncture end, an intermediate protruding safety stud, and a positioning projection on an outer surface; dilator sheaths each including tapered first diameters, an insert member at one end, a limiting shoulder at the other end, a positioning protrusion on an outer surface, and a groove on an inner surface; working sheaths each having a plurality of tapered second diameters and including a positioning protuberance on an outer surface and a trough on an inner surface; and a tool member including a shaft having a graduation on an outer surface, and an operating head threadedly secured to the shaft.

Abstract: A thoracic aortic stent structure, including a main stent having at least one sub-stent which is formed as a piece on the main stent; and a membrane covering the main stent and the at least one sub-stent, and having at least one side-opening corresponding to a free end of the at least one sub-stent. The membrane compresses the main stent and the at least one sub-stent, which causes diameter of the main stent and the at least one sub-stent narrower. Upon removing the membrane, the main stent and the at least one sub-stent can extend to reconstruct a vascular pathway. The thoracic aortic stent is able to simplify the process, of placement, save time and provide easy operation.

Abstract: A protective apparatus for a chemotherapy injection needle, includes a coring needle, a plastic film integrated with a hand-held film, and an injection vessel, wherein the coring needle is a through, hollow and metal needle having a needle head bent downwards to form an angle with a needle body which connects to the injection vessel at a rear end. The plastic film has two trapezoidal and protruding wings extending to two sides, and when the two protruding wings are folded to clamp the needle head, the protruding wings' extending length is sufficient to wrap a tip part of the needle head, and positions where the protruding wings wrap the tip part are corresponding to concaved grooves of the needle head, so that the two protruding wings attach closely with each other. Also, the two protruding wings engage with each other by a locking device to secure the protruding wings.

Abstract: An auxiliary chamber for inhaled-drugs includes a hollow tube body and a hollow side tube; and a unidirectional air valve which only allows air from an inlet flowing to an outlet end is located at the inlet end of the hollow tube body, wherein the outlet end of the hollow tube body is connected to an endotracheal tube. The hollow side tube connects with a lateral hole of the hollow tube body at one end, and a special universal adapter at the other end. The special universal adapter has a small through hole which is used to accommodate an inhaler therein to release inhaled drugs in the inhaler into the hollow tube body, and the inhaled drugs moves from the inlet end with air flow to the outlet end after entering the hollow tube body to help patients with respiratory failure take medicine.

Abstract: An abdominal aortic stent includes a first sub-stent and a second sub-stent, each having a front end and the circumference of the front end of each sub-stent is half of the circumference of the abdominal aorta, and when the circumference is gradually reduced to a rear end of each sub-stent, it has entered one side of the bilateral femoral arteries, wherein the rear ends of the sub-stents with full circumference of the cross-sectional area of the femoral artery are included therein; the first and second sub-stents are coated with external removable membrane to compress the sub-stents to generate smaller circumferences, and when the membrane has been removed, the sub-stents are fully extended to reconstruct the vascular flow path.

Abstract: A totally implantable venous device includes a port comprising an arcuate housing having a recess on an inner surface and an opening being in communication with the recess, the opening having a flat mouth, an internal chamber, and a base formed of hard plastic and being capable of preventing a needle from inserting through; a catheter comprising a fastening member at one end; a sleeve complementarily mounted on a front portion of the fastening member; and a sleeving member complementarily mounted on the remaining portion of the fastening member. The recess and the opening form a through hole having an enlarged intermediate portion. The fastening member has a truncated trapezoidal shape. The sleeve, the sleeving member, and the fastening member form a watertight structure at the recess and the opening. The catheter and the fastening member are formed of the same material.

Abstract: A natural orifice translumenal endoscopic surgery (NOTES) device includes a puncture needle, dilator sheaths and working sheaths. The puncture needle includes a puncture end and a protruding safety stud situated substantially at a middle section of the puncture needle. Each dilator sheath has an insert end and a position limit end, and each dilator is sheathed sequentially onto the puncture needle, and the position limit end is stopped by the safety stud of the puncture needle, such that the insert end will not exceed the puncture end and will form a safety interval from the puncture end. The working sheath is provided for inserting and retracting the dilator sheaths and the puncture needle to form a space required for a surgical operation after the dilator sheaths have expanded a natural orifice, so as to provide a safe and convenient use of NOTES.

Abstract: An artificial blood vessel includes an artificial blood vessel body layer and a silicone layer. The artificial blood vessel body layer comprises an injection section, and the silicone layer is covered and mounted on an outer surface of the injection section. The artificial blood vessel body layer and the silicone layer are formed integrally by injection-molding. The silicone layer covered and mounted on the injection section of the artificial blood vessel body layer enables the artificial blood vessel for repeated injections and effectively prevents puncture aneurysm from occurring.