Unfolding balloon catheter for proximal embolus protection
First Claim
1. A medical device for retrieving an intravascular device within a body lumen, comprising:
- an elongated shaft having a proximal section and a distal section;
an inflation lumen extending from the proximal section of the elongated shaft to the distal section of the elongated shaft; and
an expandable sleeve coupled to the distal section of the elongated shaft and in fluid communication with the inflation lumen, the expandable sleeve configured to unfold along an adhesive layer disposed about a portion of the elongated shaft for retrieving the intravascular device within said body lumen.
9 Assignments
0 Petitions
Accused Products
Abstract
Devices, systems and methods for removing foreign bodies within a body lumen are disclosed. An unfolding balloon catheter may include an elongated shaft having an intussuscepting balloon that can be actuated within a body lumen to capture and retrieve an intravascular device. The balloon may be configured to radially and/or axially expand when inflated, enveloping the intravascular device. In certain embodiments, the balloon may be formed by folding the ends of a distensible member inwardly, and then bonding the ends of the distensible member to the elongated shaft to form an expandable sleeve. An adhesive layer located along a portion of the elongated shaft may be used to temporarily secure the balloon to the elongated shaft.
-
Citations
55 Claims
-
1. A medical device for retrieving an intravascular device within a body lumen, comprising:
-
an elongated shaft having a proximal section and a distal section;
an inflation lumen extending from the proximal section of the elongated shaft to the distal section of the elongated shaft; and
an expandable sleeve coupled to the distal section of the elongated shaft and in fluid communication with the inflation lumen, the expandable sleeve configured to unfold along an adhesive layer disposed about a portion of the elongated shaft for retrieving the intravascular device within said body lumen. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
-
-
18. A medical device for retrieving an intravascular device within a body lumen while preventing proximal embolus flow, comprising:
-
an elongated shaft having a proximal section, a distal section., and an external wall;
an inflation lumen extending from the proximal section of the elongated shaft to the distal section of the elongated shaft, the inflation lumen including an inflation port disposed through the external wall of the elongated shaft;
an expandable sleeve coupled to the distal section of the elongated shaft and in fluid communication with the inflation lumen, the expandable sleeve configured to unfold along an adhesive layer disposed about a portion of the elongated shaft for retrieving the intravascular device within said body lumen; and
a retrieval lumen extending from the proximal section of the shaft to an opening at the distal end of the shaft. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
-
-
33. A system for retrieving a blood clot disposed at a target site within a blood vessel, comprising:
-
an intravascular device configured to engage the blood clot adjacent the target site; and
a balloon catheter configured to intussuscept the intravascular device and blood clot while limiting the proximal flow of blood within the blood vessel, the balloon catheter comprising an elongated shaft having a proximal section and a distal section, an inflation lumen extending from the proximal section of the elongated shaft to the distal section of the elongated shaft, a retrieval lumen configured to receive at least part of the intravascular device, and an expandable sleeve disposed about the distal section of the elongated shaft and in fluid communication with the inflation lumen. - View Dependent Claims (34, 35, 36)
-
-
37. A method of retrieving a foreign object from a target site within a body lumen, comprising the steps of:
-
providing an intussuscepting balloon catheter comprising an elongated shaft having a proximal section and a distal section, an inflation lumen, a retrieval lumen, and an expandable sleeve coupled to the distal section of the elongated shaft and in fluid communication with the inflation lumen;
advancing the intussuscepting balloon to the target site;
inflating the expandable sleeve; and
intussuscepting the foreign object within the expandable sleeve. - View Dependent Claims (38, 39, 40, 41, 42, 43, 44, 45)
-
-
46. A method of retrieving a foreign object from a target site within a body lumen, comprising the steps of:
-
providing an intravascular device coupled to the distal portion of a guidewire;
providing an intussuscepting balloon catheter comprising an elongated shaft having a proximal section and a distal section, an inflation lumen, a retrieval lumen, and an expandable sleeve coupled to the distal section of the elongated shaft and in fluid communication with the inflation lumen;
advancing the guidewire and intravascular device to the target site;
engaging the intravascular device at the target site;
advancing the intussuscepting balloon catheter along the guidewire to a location adjacent the intravascular device;
inflating the expandable sleeve; and
intussuscepting the foreign object and at least part of the intravascular device within the expandable sleeve; and
retrieving the intravascular device at least in part within the retrieval lumen. - View Dependent Claims (47, 48, 49, 50, 51, 52, 53)
-
-
54. A method of retrieving a foreign object from a target site within a body lumen, comprising the steps of:
-
providing an intravascular device coupled to the distal portion of a guidewire;
providing an intussuscepting balloon catheter comprising an elongated shaft having a proximal section and a distal section, an inflation lumen, a retrieval lumen, and an expandable sleeve coupled to the distal section of the elongated shaft and in fluid communication with the inflation lumen;
advancing the guidewire and intravascular device to the target site;
engaging the intravascular device at the target site;
advancing the intussuscepting balloon catheter along the guidewire to a location adjacent the intravascular device;
inflating the expandable sleeve to a first state, causing the expandable sleeve to radially expand and distend the body lumen; and
continuing to inflate the expandable sleeve to a second state, causing the expandable sleeve to unfold and expand distally;
intussuscepting the foreign object and at least part of the intravascular device within the expandable sleeve; and
retrieving the intravascular device at least in part within the retrieval lumen.
-
-
55. A method of retrieving a foreign object from a target site within a body lumen, comprising the steps of:
-
providing an intussuscepting balloon catheter comprising an elongated shaft having a proximal section and a distal section, an inflation lumen, a retrieval lumen, and an expandable sleeve coupled to the distal section of the elongated shaft and in fluid communication with the inflation lumen;
providing a vacuum source in fluid communication with the retrieval lumen;
advancing the intussuscepting balloon catheter along a guidewire to the target site;
activating the vacuum source to aspirate the foreign object at least in part within the retrieval lumen;
inflating the expandable sleeve; and
intussuscepting the foreign object within the expandable sleeve.
-
Specification