Constraint delivery—hinge and constraint delivery—corset
A method of delivering a medical device includes surrounding a deployment portion of the medical device with a sleeve that includes a sleeve wall and a securement portion positioned thereat and that is actuatable between secured and unsecured states, the sleeve configured to overlay the deployment portion to be delivered together with the deployment portion and to facilitate movement thereof through a delivery lumen during delivery of the medical device and configured to radially move between expanded and constrained configurations via actuation of the securement portion such that the sleeve is in the constrained configuration and the expanded configuration when the securement portion is in the secured and unsecured states respectively; inserting the deployment portion and sleeve together into a body lumen with the sleeve in the secured state; causing the sleeve to transition from the secured state to the unsecured state; and withdrawing the sleeve from the body lumen.
1 . A delivery device for a percutaneous medical device, the delivery device comprising:
a sleeve that includes a sleeve wall and a securement portion that is positioned at the sleeve wall and is actuatable between a secured state and an unsecured state, the sleeve configured to overlay a deployment portion of the percutaneous medical device so as to be delivered together with the deployment portion and to facilitate movement thereof through a delivery lumen during delivery of the percutaneous medical device, the sleeve further configured to radially move between a constrained configuration and an expanded configuration via actuation of the securement portion such that the sleeve is in the constrained configuration when the securement portion is in the secured state and in the expanded configuration when the securement portion is in the unsecured state; and
a tether assembly that engages the sleeve and is configured to cause the securement portion to actuate between the secured state when the percutaneous medical device is being delivered and the unsecured state prior to when the deployment portion of the percutaneous medical device is deployed, the tether assembly further configured to withdraw the sleeve from overlaying the deployment portion when the sleeve is in the expanded configuration and to withdraw the sleeve from the delivery lumen, wherein the tether assembly is configured to withdraw the sleeve by pulling on the tether assembly in a proximal direction.
2 . The delivery device of claim 1 , wherein the sleeve is a constraint sleeve that is configured to constrain the deployment portion such that the deployment portion is constrained when the percutaneous medical device is being delivered and is unconstrained when the deployment portion has been deployed.
3 . The delivery device of claim 1 , wherein the tether assembly comprises a plurality of tethers that includes a first tether and a second tether, wherein the first tether is configured to actuate the securement portion from the secured state to the unsecured state, and wherein the second tether is configured to facilitate withdrawal of the sleeve from overlaying the deployment portion when the sleeve is in the expanded configuration and to facilitate withdrawal of the sleeve from the delivery lumen.
4 . The delivery device of claim 1 , wherein the sleeve comprises a sheet that has a first edge and a second edge, and wherein the securement portion comprises removably securing the first edge and the second edge.
5 . The delivery device of claim 4 , wherein removably securing the first edge to the second edge comprises lacing the first edge with the second edge, and wherein the tether assembly is configured to unlace the first edge and the second edge.
6 . The delivery device of claim 1 , wherein the sleeve comprises a film, and the securement portion comprises a severable portion of the film.
7 . The delivery device of claim 6 , wherein the film is a single continuous film having a first edge and a second edge such that the first and second edges are opposing edges of the single continuous film, wherein the severable portion includes the first and second edges, and wherein the tether assembly is configured to cause the first edge to sever from the second edge.
8 . The delivery device of claim 1 , wherein the sleeve provides a lower delivery force than that of the percutaneous medical device.
9 . A delivery assembly for a percutaneous medical device, the delivery assembly comprising:
an introducer configured to removably house a deployment portion of the percutaneous medical device in a delivery lumen of the introducer; and
a delivery device for the percutaneous medical device, the delivery device comprising:
a sleeve that includes a sleeve wall and a securement portion that is positioned at the sleeve wall and is actuatable between a secured state and an unsecured state, the sleeve configured to overlay the deployment portion of the percutaneous medical device so as to be delivered together with the deployment portion and to facilitate movement thereof through the delivery lumen during delivery of the percutaneous medical device, the sleeve further configured to radially move between an expanded configuration and a constrained configuration via actuation of the securement portion such that the sleeve is in the constrained configuration when the securement portion is in the secured state and in the expanded configuration when the securement portion is in the unsecured state; and
a tether assembly that engages the sleeve and is configured to cause the securement portion to actuate between the secured state when the percutaneous medical device is being delivered and the unsecured state prior to when the deployment portion of the percutaneous medical device is deployed, the tether assembly further configured to withdraw the sleeve from overlaying the deployment portion when the sleeve is in the expanded configuration and to withdraw the sleeve from the delivery lumen, wherein the tether assembly is configured to withdraw the sleeve by pulling on the tether assembly in a proximal direction.
10 . The delivery assembly of claim 9 , wherein the sleeve is a constraint sleeve that is configured to constrain the deployment portion such that the deployment portion is constrained when the percutaneous medical device is being delivered and is unconstrained when the deployment portion has been deployed.
11 . The delivery assembly of claim 9 , wherein the tether assembly comprises a plurality of tethers that includes a first tether and a second tether, wherein the first tether is configured to actuate the securement portion from the secured state to the unsecured state, and wherein the second tether is configured to facilitate withdrawal of the sleeve from overlaying the deployment portion when the sleeve is in the expanded configuration and to facilitate withdrawal of the sleeve from the delivery lumen.
12 . The delivery assembly of claim 9 , wherein the sleeve comprises a sheet that has a first edge and a second edge, and wherein the securement portion comprises removably securing the first edge and the second edge.
13 . The delivery assembly of claim 12 , wherein removably securing the first edge to the second edge comprises lacing the first edge with the second edge, and wherein the tether assembly is configured to unlace the first edge and the second edge.
14 . The delivery assembly of claim 9 , wherein the sleeve comprises a film, and the securement portion comprises a severable portion of the film.
15 . The delivery assembly of claim 14 , wherein the film is a single continuous film having a first edge and a second edge such that the first and second edges are opposing edges of the single continuous film, wherein the severable portion includes the first and second edges, and wherein the tether assembly is configured to cause the first edge to sever from the second edge.
16 . The delivery assembly of claim 9 , wherein the sleeve provides a lower delivery force than that of the percutaneous medical device.
17 . A method of delivering a percutaneous medical device, the method comprising:
surrounding a deployment portion of the percutaneous medical device with a sleeve that includes a sleeve wall and a securement portion that is positioned at the sleeve wall and is actuatable between a secured state and an unsecured state, the sleeve configured to overlay the deployment portion of the percutaneous medical device so as to be delivered together with the deployment portion and to facilitate movement thereof through a delivery lumen during delivery of the percutaneous medical device, the sleeve further configured to radially move between an expanded configuration and a constrained configuration via actuation of the securement portion such that the sleeve is in the constrained configuration when the securement portion is in the secured state and in the expanded configuration when the securement portion is in the unsecured state;
inserting the deployment portion of the percutaneous medical device together with the sleeve into a body lumen in a distal direction with the sleeve in the secured state;
causing the sleeve to transition from the secured state to the unsecured state; and
withdrawing the sleeve from the body lumen by pulling in a proximal direction.
18 . The method of claim 17 further comprising inserting the percutaneous medical device together with the sleeve into an introducer, and wherein inserting the deployment portion includes inserting the introducer into the body lumen and moving the deployment portion distally relative to the introducer such that the deployment portion is outside of the introducer.
19 . The method of claim 17 , wherein a tether assembly is configured to cause the sleeve to transition from the secured state to the unsecured state and withdraw the sleeve from the body lumen.
20 . The method of claim 19 , wherein a first tether of the tether assembly is configured to cause the sleeve to transition from the secured state to the unsecured state; and wherein a second tether of the tether assembly is configured to withdraw the sleeve from the body lumen.