US 11,376,145 B2Granted

Distal torque component, delivery system and method of using same

AssigneeBolton Medical, Inc.

InventorsSamuel Arbefeuille, Nico Bahar, Eduardo Alejandro Garcia, Scott L. Rush

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Abstract

A delivery system and method for implanting a stent graft prostheses includes and employs a torque component at a distal end of the stent graft prosthesis, whereby following advancement of the stent graft to a surgical site in a constrained or partially constrained configuration, torque is applied to the torque component and, consequently, to the stent graft to rotationally align the stent graft about a longitudinal axis of the stent graft, followed by deployment of the stent graft in correct rotational alignment, and subsequent retraction of the delivery device from the deployed stent graft and the subject. The torque component includes a pushrod and at least two arms.

Claims28

Dependent claims

A delivery system for implanting a stent graft, comprising:

a) a longitudinal body defining a longitudinal axis and having a proximal handle and a distal handle;
b) a guidewire catheter having a proximal end and a distal end, and extending from the distal handle of the longitudinal body;
c) a stent graft defining an opening and extending about the guidewire catheter, the stent graft including
i) a luminal graft component, and
ii) a plurality of radial stents distributed longitudinally along the luminal graft component, at least one of the stents having struts that are joined to define proximal and distal apices;
d) a radial constraint at the stent graft extending about the guidewire catheter;
e) a torque component, including
i) a pushrod extending about the guidewire catheter and distally from the proximal handle,
ii) at least two arms disposed radially about and extending distally from the pushrod, each arm being moveable from a constricted state to an expanded state, whereby the torque component exhibits radial expansion, and whereby application of torque force to the torque component by rotation of the proximal handle about the longitudinal axis causes the stent graft to rotate about the longitudinal axis, wherein at least one of the arms defines an opening at a distal end,
iii) a suture ring secured to the arm at the opening defined by the at least one arm and extending through the opening defined by the stent graft, and extending from the opening defined by the stent graft, and
iv) a wire extending from the longitudinal body and through the suture to secure the stent graft to the at least one arm, whereby retraction of the wire toward the handle releases the stent graft from the at least one arm.

8 more elements

A delivery system for implanting a stent graft, comprising:

a) a longitudinal body defining a longitudinal axis and having a proximal handle and a distal handle and a handle body extending from the proximal handle to the distal handle;
b) a guidewire catheter having a proximal end and a distal end, and extending from the distal handle of the longitudinal body;
c) a stent graft extending about the guidewire catheter, the stent graft including
i) a luminal graft component, and
ii) a plurality of radial stents distributed longitudinally along the luminal graft component, at least one of the stents having struts that are joined to define proximal and distal apices;
d) a radial constraint at the stent graft extending about the guidewire catheter;
e) a torque component, including
i) a pushrod extending about the guidewire catheter and distally from the proximal handle, and
ii) at least two arms disposed radially about and extending distally from the pushrod, each arm being moveable from a constricted state to an expanded state, whereby the torque component exhibits radial expansion, and whereby application of torque force to the torque component by rotation of the proximal handle about the longitudinal axis causes the stent graft to rotate about the longitudinal axis,
wherein the proximal handle is fixed to the pushrod and can rotate about the handle body to thereby rotate the torque component.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/433,823Filed 6 Jun 2019 · continuation
Priority: 31 Oct 2017
Published: US 2019/0321207 A124 Oct 2019
Granted: 5 Jul 2022
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

A61F 2/966
Having an outer sleeve: with relative longitudinal movement between outer sleeve and prosthesis, e.g. using a push rod
A61F 2/9662
With relative longitudinal movement between outer sleeve and prosthesis, e.g. using a push rod: the middle portion of the stent or stent-graft is…
A61F 2/07
Blood vessels: stent-grafts
A61F 2/9517
Instruments specially adapted for placement or removal of stents or stent-grafts: handle assemblies therefor