초록 ▼

The present invention advantageously provides self-tensioning occlusion devices, systems, and methods for percutaneous access and closure of vascular puncture sites. One device includes a catheter body, an occlusion member, and a tensioning member. The occlusion member, such an expansible member, is

The present invention advantageously provides self-tensioning occlusion devices, systems, and methods for percutaneous access and closure of vascular puncture sites. One device includes a catheter body, an occlusion member, and a tensioning member. The occlusion member, such an expansible member, is disposed on a distal end of the body. The tensioning member, such as a spring or coil, is slidably disposed over the body and proximal the expansion member. Generally, during application, the tensioning member will be deployed against subcutaneous tissue so as to apply tension to the expansible member against the puncture site. The substantial hold once the tension is applied is then provided by an external element, such as an anchoring clip.

대표청구항 ▼

What is claimed is: 1. A system for hemostasis of a puncture site in a body lumen, the system comprising:a catheter comprising: (i) a catheter body having a proximal end, a distal end, and at least one axial lumen therethrough; (ii) an occlusion member capable of being radially expanded and contract

What is claimed is: 1. A system for hemostasis of a puncture site in a body lumen, the system comprising:a catheter comprising: (i) a catheter body having a proximal end, a distal end, and at least one axial lumen therethrough; (ii) an occlusion member capable of being radially expanded and contracted at the distal end of the catheter body; (iii) a helical coil spring having a central passage which receives the catheter body and having a distal end fixedly attached to the distal end of the catheter body and a proximal end having a user grip which allows the user to pull proximally on the coil spring to tension the occlusion member against the puncture site; and (iv) an axial member slideably disposed in the axial lumen of the catheter body to selectively radially expand and contract the occlusion member; andan external clip coupleable to the proximal end of the coil spring to engage a skin surface in order to hold said proximal end in place over the tissue tract.