Abstract: A left atrial appendage occlusion device and a delivery system are provided, wherein the left atrial appendage occlusion device includes a stent and an occluder. Firstly, the stent is implanted and fixed at the entrance of the left atrial appendage; then, a double-disc occluder is released on the stent to occlude the left atrial appendage. The left atrial appendage occlusion device includes a self-expandable nitinol stent, which is firmly fixed at the entrance of the left atrial appendage via a two-way anchoring thorn, and then an occluder is released on the stent. The left atrial appendage occlusion device is delivered to the left atrial appendage by the delivery system. Compared with the prior art, the delivery system improves the releasing accuracy and the implanting stability of the occluder. After being released, both the stent and the occluder can be withdrawn into a catheter to be relocated or replaced.

Abstract: A left atrial appendage occlusion device and a delivery system are provided, wherein the left atrial appendage occlusion device includes a stent and an occluder. Firstly, the stent is implanted and fixed at the entrance of the left atrial appendage; then, a double-disc occluder is released on the stent to occlude the left atrial appendage. The left atrial appendage occlusion device includes a self-expandable nitinol stent, which is firmly fixed at the entrance of the left atrial appendage via a two-way anchoring thorn, and then an occluder is released on the stent. The left atrial appendage occlusion device is delivered to the left atrial appendage by the delivery system. Compared with the prior art, the delivery system improves the releasing accuracy and the implanting stability of the occluder. After being released, both the stent and the occluder can be withdrawn into a catheter to be relocated or replaced.

Abstract: Modified suture knots may be utilized to effective anchor one stent-graft to another stent-graft wherein the stent-grafts are normally connected via an interference fit in an overlap configuration. The sutures that are utilized to affix the graft material to the underlying stent structure may be modified to have a profile that allow it to lock and secure it to another stent-graft or a vessel into which it is implanted.

Abstract: A biocompatible solid-solution alloy may be formed into any number of implantable medical devices. The solid-solution alloy comprises a combination of elements in specific ratios that make it magnetic resonance imaging compatible while retaining the characteristics required for implantable medical devices. The biocompatible solid-solution alloy is a cobalt-chromium alloy having substantially reduced iron, silicon, phosphorus and sulfur content.

Abstract: A biocompatible solid-solution alloy may be formed into any number of implantable medical devices. The solid-solution alloy comprises a combination of elements in specific ratios that make it magnetic resonance imaging compatible while retaining the characteristics required for implantable medical devices. The biocompatible solid-solution alloy is a cobalt-chromium alloy having substantially reduced iron, silicon, phosphorus and sulfur content.