Device for Heart Repair
AssigneeCardiomech AS
InventorsNikolai HIORTH, Hans Emil HIORTH
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Abstract
Disclosed herein is an anchor system for implantation in body tissue to hold a line (18). The anchor system comprises an anchor (9), the anchor (9) comprising a number of hooks (62) for engagement with the body tissue and having a folded configuration and an unfolded configuration. The anchor (9) is made of an elastic material such that it can be elastically deformed into the folded configuration by application of a constraining force, and will return to the unfolded configuration when no constraining force is applied. The end of each of the hooks (62) comprises a tip (160′), wherein the tips (160′) are formed to curve towards a central axis of the anchor (9) when the anchor (9) is in the folded configuration.
Claims20
An anchor system for implantation in body tissue to hold a line, the anchor system comprising:
- an anchor comprising a number of hooks for engagement with the body tissue and having a folded configuration and an unfolded configuration, wherein the anchor is made of an elastic material such that it can be elastically deformed into the folded configuration by application of a constraining force, and will return to the unfolded configuration when no constraining force is applied, and wherein the end of each of the hooks comprises a tip, and wherein the tips are formed to curve towards a central axis of the anchor when the anchor is in the folded configuration.
An anchor system as claimed in any preceding claim, wherein in the folded configuration the outermost portions of the anchor are portions of the hooks spaced apart from the ends of the tips of the hooks.
An anchor system as claimed in any preceding claim, wherein when the anchor is in the folded configuration the hooks include a first curve portion extending towards the central axis of the anchor, a second curve portion extending away from the central axis of the anchor, and then a third curve portion where the tips curve back towards the central axis of the anchor.
An anchor system as claimed in any preceding claim, wherein, the unfolded configuration of the hooks includes a first curved portion with a first direction of curvature extending along the majority of the length of the hook, followed by a second curved portion with an opposite direction of curvature at the tip of the hook.
An anchor system as claimed in any preceding claim, wherein the curvature of the tips provides a springback force, the springback force pulling the anchor through the body tissue when the anchor unfolds from the folded configuration to the unfolded configuration during implantation.
An anchor as claimed in any preceding claim, wherein the tips are shaped such that a widest part of each tip is wider than a preceding portion of its respective hook.
An anchor as claimed in any preceding claim, wherein the shape of the tips comprises an ovate body, the ovate body having a pointed tip at the distal end of the anchor.
An anchor system as claimed in any preceding claim, wherein the hooks are formed with openings along their length.
An anchor system as claimed in any preceding claim, wherein the anchor is formed from a tube that has been cut to provide tines extending from one end of the tube, with these tines then having been curved and heat set to form the unfolded configuration of the hooks and tips.
An anchor system as claimed in any preceding claim, wherein the anchor includes a locking mechanism arranged to clamp a line when no force is applied to the locking mechanism, optionally wherein the locking mechanism comprises a locking ring that is able to be elastically deformed to release the line from the locking mechanism for adjustment of the length of the line.
A catheter device for implanting an artificial chordae line into the body, the catheter device comprising an anchor system as claimed in any preceding claim with the anchor being a leaflet anchor or a papillary anchor.
Dependencies are inferred from the claim text.