摘要:
An instrument captures free thrombi by inhibiting blood coagulation reaction at the stage of primary hemostasis, in which platelets are involved, and at the stage of coagulation thrombus formation, in which blood coagulation factors are involved, thereby securely capturing free thrombi and extending the available time of the instrument.
摘要:
A connector capable of facilitating the insertion of a connected object, and obtaining a sufficient contact force. Contacts are held by a housing including a receiving space into which is inserted FPC. An actuator is mounted in the housing in a manner pivotally movable between open position for inserting FPC into the space, and closed position for holding FPC therein. The contacts have respective seesaw-type beams having one ends thereof formed with portions for contact with FPC, and the other ends thereof formed with power point portions for receiving the turning force of the actuator. The actuator has pressing portions for pushing downward the power point portions when open, to thereby lift them to move the contact portions out of the space, and cam portions for pushing upward the same when closed, to thereby push them downward to cause the contact portions to enter the space.
摘要:
The device is to keep a collapsible/restorable elastic artificial blood vessel 1 in a collapsed condition, to transport the artificial blood vessel 1 to a target position and subsequently to restore the artificial blood vessel 1 into a predetermined shape by releasing it from the collapsed condition. The device comprises wrapping members 51, 52 which are generally flat when spread and wires 53, 54 which hold each of the wrapping members 51, 52 in a condition of being rolled, wherein each of a body portion 2 and a branch portion 3 of the artificial blood vessel 1 is contained inside the wrapping members 51, 52 held by the wires 53, 54 in a collapsed condition and the wires 53, 54 are separated from the wrapping members 51, 52 at the target position to spread the wrapping members 51, 52 so as to release the artificial blood vessel 1.
摘要:
An implantable appliance (1) comprises a front end wire ring (2), one or more intermediate wire rings (5) and a rear end wire ring (3) connected by a tubular cover (4). The wire rings (2), (3) and (5) are flexibly foldable. A front end portion (1a) of the appliance (1) is equally divided into four or an even number over four segments with dividing points (6a), (6b), (6c), (6d) between the segments, and a front hooking portion (8) for hauling the appliance (1) is formed at midpoints between the dividing points (6a), (6b), (6c), (6d) and the dividing points (6b), (6c), (6d), (6a). The invention includes a method in which the front end portion (1a) is collapsed into a wavy shape with every other dividing point (6a), (6c) forming forwardly directed peaks and other dividing points (6b), (6d) forming the bottoms of forwardly directed valleys, such that front hooking portions are located between adjacent peaks and valleys.
摘要:
In a connector having a rotary actuator (14) for bringing a sheet-like object (11) into press contact with a contact (13) held by a housing (12), the rotary actuator is engaged with the contact in a predetermined direction parallel to the sheet-like object and perpendicular to a center axis of a shaft portion (22) of the rotary actuator. The shaft portion is rotatably engaged with the housing. The contact has a contacting portion (15) to be faced to one surface of the sheet-like object and a supporting portion (16) to be faced to the other surface of the sheet-like object. The actuator has a cam portion (21) integrally connected to the shaft portion and located between the supporting portion and the sheet-like object. The supporting portion has a recess (17) which receives the cam portion to engage the cam portion with the supporting portion in the predetermined direction.
摘要:
An artificial blood vessel A comprises a pair of discrete end wire rings 101, 102, a tubular cover 7 made of a sheet of flexible, tensile material which connects the end wire rings 101, 102, and a plurality of intermediate wire rings 12 arranged spaced apart between the end wire rings 101, 102 and circumferentially fixed to the cover 7 by suturing or with adhesive. All of the rings are located on the outside of the cover. To implant the vessel A via a catheter, a plurality of dividing points 411, 431 which bisect the circumference of the front end wire ring 101 are pulled forward while the movement of the midpoints 421, 441 between the dividing points 411, 431 following the movement of the dividing points 411, 431 is restrained by the projections 18c on a tapered surface 18d of a funneled tube 18 so as to fold the front end wire ring 101 into a wavy shape, with the dividing points 411, 431 forming forwardly directed peaks and the midpoints 421, 441 forming the bottoms of forwardly directed valleys. The dividing points of the front wire ring are pulled farther forward so as to fold the intermediate wire rings 12 and the rear end wire ring 102 into a regular wavy shape having the same phase as that of the front wire ring 101 by the effect of restraint by the tapered surface 18d and the projections 18c, thereby to collapse the artificial blood vessel A as a whole into a small size for passage through the catheter. Upon release of the artificial vessel from the catheter at the affected portion of the blood vessel, the artificial vessel is restored to its original shape. The end wire rings, the cover, and the intermediate wire rings alone keep the shape of the artificial vessel.
摘要:
The artificial blood vessel A comprises a front end wire ring 10.sub.1, a rear end wire ring 10.sub.2 arranged facing to the front end wire ring 10.sub.1, a tubular cover 7 which connects the end wire rings 10.sub.1, 10.sub.2, and a plurality of intermediate wire rings 12 arranged spaced apart from each other between the front end wire ring 10.sub.1 and the rear end wire ring 10.sub.2. Each of the front end wire ring 10.sub.1, the rear end wire ring 10.sub.2 and the intermediate wire rings 12 are given flexibly foldable elasticity. The circumference of the front end wire ring 10.sub.1 is equally divided into four by dividing points 41.sub.1, 42.sub.1, 43.sub.1, 44.sub.1. Hooking devices 13 are formed for a front pull string to be passed through at the dividing points 41.sub.1, 43.sub.1. The circumference of the intermediate wire ring 12 is fixed to the tubular cover 7 by suturing or with adhesive at the positions 51.sub.3, 52.sub.3, 53.sub.3, 54.sub.3 which correspond to the midpoint 51.sub.1 between the dividing points 41.sub.1, 42.sub.1, the midpoint 52.sub.1 between the dividing points 42.sub.1, 43.sub.1, the midpoint 53.sub.1 between the dividing points 43.sub.1, 44.sub.1, and the midpoint 54.sub.1 between the dividing points 44.sub.1, 41.sub.1.
摘要:
This is a method of collapsing an artificial blood vessel A. The artificial blood vessel A comprises a pair of discrete end wire rings 10.sub.1, 10.sub.2, a tubular cover 7 made of a sheet of flexible, tensile material which connects the end wire rings 10.sub.1, 10.sub.2, and a plurality of intermediate wire rings 12 arranged spaced apart between the end wire rings 10.sub.1, 10.sub.2 and circumferentially fixed to the cover 7 by suturing or with adhesive. A plurality of dividing points 41.sub.1, 43.sub.1 which bisect the circumference of the front end wire ring 10.sub.1 are pulled forward while the movement of the midpoints 42.sub.1, 44.sub.1 between the dividing points 41.sub.1, 43.sub.1 following the movement of the dividing points 41.sub.1, 43.sub.1 are restrained by the projections 18c on a tapered surface 18d of a funnelled tube 18 so as to fold the front end wire ring 10.sub.1 into a wavy shape, with the dividing points 43.sub.1, 43.sub.1 forming forwardly directed peaks and the midpoints 42.sub.1, 44.sub.1 forming the bottoms of forwardly directed valleys, and the dividing points of the front wire ring are pulled farther forward so as to fold the intermediate wire rings 12 and the rear end wire ring 10.sub.2 into a regular wavy shape having the same phase as that of the front wire ring 10.sub.1 by the effect of restraint by the tapered surface 18d and the projections 18c, thereby to collapse the artificial blood vessel A as a whole into a small size.
摘要:
A device for introducing an implantable appliance into a catheter including an attachment connected to said open end of catheter, the attachment being closed at its open end by a flexible check valve. A cartridge is removably attachable to the catheter attachment with the cartridge when attached having a front end portion communicating with the catheter and its other end closed by a second flexible check valve. This second check valve is open when the appliance to be implanted is introduced into the cartridge but thereafter is kept closed and the front end portion of the cartridge with the appliance now inside is inserted into to the first check valve of the attachment.
摘要:
The device of the invention is provided with a pair of patches each comprising a resilient, foldable annular frame and a piece of cloth stretched over and fixed to the frame. The patches are so arranged as to face each other across a gap and sewed together concentrically with a thread slightly inwardly of the outer circumferential edge thereof in such a manner that as the thread is pulled, the two patches are moved so as to approach each other.