# US 2016/0256271 A1 · Low profile valve locking mechanism and commissure assembly > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2016/0256271 A1 - Document ID: US20160256271A1 - Status: Published application - Kind: A1 - Application number: 15/058,841 - Filed: 2016-03-02 - Published: 2016-09-08 - Earliest claimed: 2015-03-06 - Assignees: Boston Scientific Scimed, Inc. - Applicants: Boston Scientific Scimed, Inc. - Inventors: Andrew J.H. Backus; Takashi H. Ino; Crissly V. Crisostomo; Michael P. Calomeni; Anh Thu Pham - Web page: https://patentgrep.com/patent/US20160256271A1 ## CPC - A61F 2/2439: {Expansion controlled by filaments} - A61F 2/2418: {Scaffolds therefor, e.g. support stents} - A61F 2/2427: {Devices for manipulating or deploying heart valves during implantation} - A61F 2/243: {Deployment by mechanical expansion} - A61F 2220/0008: Fixation appliances for connecting prostheses to the body - A61F 2220/0033: made by longitudinally pushing a protrusion into a complementary-shaped recess, e.g. held by friction fit - A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C) ## Abstract A replacement heart valve locking mechanism may include a buckle member fixedly attached to a tubular anchor member defining a central longitudinal axis, a post member axially translatable relative to the buckle member, and an actuator member releasably connected to the post member at an attachment point. The post member may include a latch portion configured to engage a catch formed in the buckle member such that movement of the post member distally relative to the buckle member is prevented. The attachment point may be disposed proximal of the latch portion. Circumferential translation of the latch portion about the central longitudinal axis may disengage the latch portion from the catch. ## Claims ### Claim 1 A replacement heart valve locking mechanism, comprising: a buckle member fixedly attached to a tubular anchor member; a post member axially translatable relative to the buckle member; and an actuator member releasably connected to the post member at an attachment point; wherein the post member includes a latch portion configured to engage a catch formed in the buckle member such that movement of the post member distally relative to the buckle member is prevented; wherein the attachment point is disposed proximal of the latch portion. ### Claim 2 (depends on 1) The replacement heart valve locking mechanism of claim 1, further including a pin member releasably engaged with and extending through the actuator member and the post member at the attachment point. ### Claim 3 (depends on 2) The replacement heart valve locking mechanism of claim 2, wherein the pin member includes a straightened distal section and a curled distal tip portion distal of the distal section. ### Claim 4 (depends on 3) The replacement heart valve locking mechanism of claim 3, wherein the pin member curves in a single direction from the distal section through the distal tip portion. ### Claim 5 (depends on 1) The replacement heart valve locking mechanism of claim 1, wherein proximal axial translation of the post member moves the attachment point from a first position distal of the buckle member to a second position proximal of a distal end of the buckle member. ### Claim 6 (depends on 1) The replacement heart valve locking mechanism of claim 1, wherein the post member includes a cantilevered leg extending proximally from a distal end of the post member. ### Claim 7 (depends on 1) The replacement heart valve locking mechanism of claim 1, wherein the buckle member is substantially rigid. ### Claim 8 (depends on 1) The replacement heart valve locking mechanism of claim 1, wherein at least a portion of the post member is flexible. ### Claim 9 (depends on 7) The replacement heart valve locking mechanism of claim 7, wherein the latch portion is moveable relative to a body portion of the post member. ### Claim 10 A replacement heart valve locking mechanism, comprising: a buckle member fixedly attached to a tubular anchor member, the anchor member defining a central longitudinal axis; a post member axially translatable relative to and within the buckle member; and an actuator member releasably connected to the post member at an attachment point; wherein the post member includes a body portion and a latch portion movable relative to the body portion, the latch portion being configured to engage a catch formed in the buckle member such that movement of the post member distally relative to the buckle member is prevented; wherein circumferential translation of the latch portion about the central longitudinal axis disengages the latch portion from the catch. ### Claim 11 (depends on 10) The replacement heart valve locking mechanism of claim 10, wherein the buckle member includes two axially-extending side walls extending away from the anchor member, a back wall extending between the two side walls and defining a channel extending axially through the buckle member, and one or more apertures disposed within the back wall between the two side walls; wherein a fastening element passes through the one or more apertures and secures the buckle member to the anchor member. ### Claim 12 (depends on 11) The replacement heart valve locking mechanism of claim 11, wherein the buckle member includes a slot passing axially therethrough along one of the two side walls. ### Claim 13 (depends on 12) The replacement heart valve locking mechanism of claim 12, wherein the slot is at least partially coincidental with the channel. ### Claim 14 (depends on 11) The replacement heart valve locking mechanism of claim 11, wherein the back wall is disposed radially distant from the central longitudinal axis relative to the two side walls, the back wall including a recessed portion in communication with the one or more apertures and a distal end of the buckle member. ### Claim 15 (depends on 14) The replacement heart valve locking mechanism of claim 14, wherein the fastening element extends away from the buckle member through the recessed portion when the post member is disposed within the channel. ### Claim 16 (depends on 11) The replacement heart valve locking mechanism of claim 11, wherein the catch is formed within at least one of the two side walls. ### Claim 17 (depends on 10) The replacement heart valve locking mechanism of claim 10, wherein the post member includes a cantilevered leg extending proximally from a distal end of the post member. ### Claim 18 (depends on 10) The replacement heart valve locking mechanism of claim 10, wherein the actuator member includes a flattened attachment portion fixedly attached to a D-shaped elongated rod. ### Claim 19 (depends on 18) The replacement heart valve locking mechanism of claim 18, wherein at least a portion of the elongated rod extends distally of the attachment portion. ### Claim 20 (depends on 19) The replacement heart valve locking mechanism of claim 19, wherein the portion of the elongated rod extending distally of the attachment portion is configured to effect circumferential translation of the latch portion about the central longitudinal axis to disengage the latch portion from the catch when the actuator member is advanced distally.