US 8,308,790 B2 · Two-part expanding stent graft delivery system

Abstract

A delivery system for endovascularly delivering a prosthesis along a guidewire to a curved implantation site includes a delivery device having control handle and an inner lumen slidably disposed in the handle between a retracted position and an extended position. The inner lumen has a distal end and a tip at the distal end of the inner lumen. An intermediate lumen is slidably disposed about the inner lumen and has a distal end. A relatively flexible prosthesis sheath is connected to the distal end of the intermediate lumen and a relatively stiff outer lumen is axially fixedly connected to the handle about the intermediate lumen. The outer lumen has a length only long enough to be inserted in a patient's aorta no further than the patient's celiac axis.

Claims33

Dependent claims

A system for implanting a prosthesis, comprising:

a handle having a proximal portion and a distal portion;
a prosthesis delivery assembly including,
an guidewire catheter slidably disposed in said handle between a retracted position and an extended position, said guidewire catheter having a distal end and a tip at said distal end of said guidewire catheter,
a sheath catheter slidably disposed about said guidewire catheter and having a distal end, and
a relatively flexible prosthesis sheath connected to said distal end of said sheath catheter;
and
a relatively stiff outer catheter rotationally and longitudinally fixedly connected to a distal portion of said handle about said sheath catheter and having a proximal end and a distal end;
and
a locking mechanism that selectively locks the guidewire catheter to the sheath catheter when the locking mechanism is in one position and the guidewire catheter to the outer catheter when the locking mechanism is in another position, whereby one of said sheath catheter and said outer catheter are retractable relative to the other catheter while said other catheter and said guidewire catheter remain essentially stationary relative to each other.

6 more elements

A system for implanting a prosthesis in a patient at an implantation site, comprising:

a proximal control handle having,
a handle body including a proximal handle end and a distal handle end, the handle body including a major longitudinal axis,
a prosthesis movement control assembly movably disposed along the major longitudinal axis of the handle body, the prosthesis movement control assembly including a proximal handle that is restrained from rotation about the handle body, and
a distal handle at the distal handle end that is rotationally coupled to the handle body, the distal handle being restrained from axial movement along the handle body;
a prosthesis delivery assembly including,
a guidewire catheter selectively linked to the prosthesis movement control assembly and slidably disposed in said proximal control handle between a retracted position and an extended position, said guidewire catheter having a distal end and a tip at said distal end of said guidewire catheter,
a sheath catheter linked to the prosthesis movement control assembly and slidably disposed about said guidewire catheter in said proximal control handle and having a distal end, and
a relatively flexible prosthesis sheath connected to said distal end of said sheath catheter;
a relatively stiff outer catheter rotationally and longitudinally fixed to a distal portion of said distal handle and fixedly connected to said distal handle about said sheath catheter and said sheath, whereby the outer catheter rotates about the major longitudinal axis of the handle body by rotation of the distal handle about the major longitudinal axis of the handle body and whereby the prosthesis movement control assembly is rotatable within the outer catheter by rotation of the proximal handle relative to the distal handle;
a prosthesis disposed within the relatively flexible prosthesis sheath and linked to the prosthesis movement control assembly, whereby advancement or rotation of the prosthesis movement control assembly along the handle body relative to the distal handle can cause rotational alignment of the prosthesis within a vessel to align the prosthesis with an implantation site of the vessel;
and
a locking mechanism that selectively locks the guidewire catheter to the sheath catheter when the locking mechanism is in one position and the guidewire catheter to the outer catheter when the locking mechanism is in another position,
wherein one of said sheath catheter and said outer catheter are retractable relative to the other catheter while said other catheter and said guidewire catheter remain essentially stationary relative to each other.

10 more elements

A system for implanting a prosthesis in a patient at an implantation site, comprising:

a proximal control handle having a handle body including a proximal handle end and a distal handle end, the handle body including a major longitudinal axis,
a prosthesis movement control assembly movably disposed along the major longitudinal axis of the handle body, the prosthesis movement control assembly including a proximal handle that is restrained from rotation about the handle body, and
a distal handle at the distal handle end that is rotationally coupled to the handle body, the distal handle being restrained from axial movement along the handle body and having a distal portion;
a prosthesis delivery assembly including;
a guidewire catheter selectively linked to the prosthesis movement control assembly and slidably disposed in said proximal control handle between a retracted position and an extended position, said guidewire catheter having a distal end and a tip at said distal end of said guidewire catheter, and wherein the distal end of the guidewire catheter is curved,
a sheath catheter linked to the prosthesis movement control assembly and slidably disposed about said guidewire catheter in said proximal control handle and having a distal end, and
a relatively flexible prosthesis sheath connected to said distal end of said sheath catheter;
a relatively stiff outer catheter rotationally and longitudinally fixed to the distal portion said distal handle and fixedly connected to said distal handle about said sheath catheter and said sheath, whereby the outer catheter rotates about the major longitudinal axis of the handle body by rotation of the distal handle about the major longitudinal axis of the handle body and whereby advancement of the prosthesis movement assembly along the handle body relative to the distal handle will cause rotational alignment of the prosthesis within a curved implantation site of the vessel to align the distal end of the guidewire catheter with the curved implantation site of the vessel;
a prosthesis disposed within the relatively flexible prosthesis sheath and linked to the prosthesis movement control assembly, whereby advancement or rotation of the prosthesis movement control assembly along the handle body relative to the distal handle can cause rotational alignment of the prosthesis within a vessel to align the prosthesis with an implantation site of the vessel;
and
a locking mechanism that selectively locks the guidewire catheter to the sheath catheter when the locking mechanism is in one position and the guidewire catheter to the outer catheter when the locking mechanism is in another position,
wherein one of said sheath catheter and said outer catheter are retractable relative to the other catheter while said other catheter and said guidewire catheter remain essentially stationary relative to each other.

9 more elements

Dependencies are inferred from the claim text.

Two-part expanding stent graft delivery system

Life of this patent

Two-part expanding stent graft delivery system

Life of this patent

Abstract

Claims33