2results about How to "Avoid recycling difficulties" patented technology

The utility model provides a kind of adjustable outer sheath, including sheath and knob being rotationally arranged in the tail end of the sheath, the inside of the pipe wall of the sheath is equipped with spiral channel, the spiral channel is arranged along the axial direction of the sheath, the inside of the spiral channel is equipped with tightening silk, one end of the tightening silk is fixedly connected with the front end of the sheath, the other end of the tightening silk is connected with the knob by breaking the outer wall of the sheath. By rotating knob to pull tightening silk, so that sheath can be retracted under the action of tightening silk, effectively avoid the problem that sheath is difficult to recover due to vasospasm or initial blood vessel passive expansion and other reasons.

This invention discloses a valve repair system, including a valve repair device and a delivery device. The valve repair device includes at least one pair of clamping portions and at least one pair of elastic clamping portions. In its natural state, the pair of clamping portions are far apart from each other and respectively abut against the clamping portions opposite to them. The delivery device includes at least a pushing component, which includes a pushing catheter. The valve repair device is detachably connected to the distal end of the pushing catheter. The pushing catheter has multiple channels extending through its proximal and distal ends, and at least two opposing channels are included among the multiple channels, which are axially opposite to the two clamping portions. The valve repair system also includes at least two adjusting wires for controlling the angle at which the pair of clamping portions approach each other. Each adjusting wire is movably connected to the clamping portion and then folded in half to form two strands. The proximal ends of both strands can be movably inserted into the channels and connected to the proximal end of the pushing component. The two strands of each adjusting wire do not simultaneously insert into an opposing channel on the opposite side.