Shapeable re-entry devices and associated systems and methods
Inventors
Rizk, Isa • Fulkerson, John • Razavi, Mahmood
Assignees
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Publication Number
US-10799255-B2
Publication Date
2020-10-13
Expiration Date
Abstract
Methods for treating a patient using intravascular devices, systems, and methods are disclosed herein. One aspect of the present technology is directed to an intravascular device having an elongated member coupled to and extending between a handle and an angled distal portion. The distal portion is moveable between a first configuration having a first shape configured for intravascular delivery and a second configuration having a second shape, different than the first shape, that is configured for intravascular delivery.
Core Innovation
The invention relates to an intravascular device that includes a handle and an elongated shaft coupled to a distal end of the handle. The elongated shaft comprises a braid-reinforced polymer layer with an outer polymer layer over a first length of the braid-reinforced polymer layer. The device further includes a distal portion coupled to a distal end of the elongated shaft and a distal tip coupled to a distal end of the distal portion, wherein the elongated shaft, the distal portion, and the distal tip define a lumen extending therethrough.
In the distal portion, the device includes a second length of the braid-reinforced polymer layer and a hollow tube over the second length of the braid-reinforced polymer layer, where the hollow tube comprises a metal. The hollow tube is configured to be shaped so as to form a first section and a second section that extends distally at an angle from the first section. The angle between the first section and the second section remains the same when an interventional device is at least partially within and spanning at least a portion of the first section and at least a portion of the second section.
The distal tip is tapered to form an atraumatic end, and it is coupled to the distal end of the distal portion. In a clinician-force embodiment, while the distal portion is located external to a patient, the distal portion is moveable between a first configuration and a second configuration that are both retained while the intravascular device is intravascularly delivered through tortuous anatomy, with the second configuration being different from the first.
Claims Coverage
The provided independent claims cover two related intravascular device configurations, each built around a braid-reinforced polymer shaft with an outer polymer layer, and a distal metal hollow tube with a tapered atraumatic distal tip defining a lumen. Across the independent claims, the main inventive features are constant-angle behavior during interventional device spanning and clinician-force moveable and retained delivery configurations through tortuous anatomy.
Braid-reinforced polymer shaft with distal metal hollow tube and atraumatic tapered tip defining a lumen
An intravascular device comprising a handle; an elongated shaft with a first length of a braid-reinforced polymer layer and an outer layer over the first length comprising a polymer; a distal portion with a second length of the braid-reinforced polymer layer and a hollow tube over the second length, the hollow tube comprising a metal; and a distal tip coupled to a distal end of the distal portion, the distal tip being tapered to form an atraumatic end, wherein the elongated shaft, the distal portion, and the distal tip define a lumen extending therethrough.
Constant angle between first and second sections when an interventional device spans portions of the distal portion
The hollow tube is configured to be shaped to form a first section and a second section extending distally at an angle from the first section such that the angle between the first section and the second section remains the same when an interventional device is at least partially within and spanning at least a portion of the first section and at least a portion of the second section.
Clinician-force moveable and retained first and second delivery configurations through tortuous anatomy
The hollow tube is configured to be shaped such that, in response to a force applied by a clinician while the distal portion is located external to a patient, the distal portion is moveable between a first configuration configured to be retained while the intravascular device is intravascularly delivered through tortuous anatomy and a second configuration configured to be retained while the intravascular device is intravascularly delivered through tortuous anatomy, wherein the second configuration is different from the first configuration.
Across the independent claims, the core coverage is an intravascular device with a lumen-forming elongated shaft, a distal portion including a metal hollow tube over a braid-reinforced polymer layer, and a tapered atraumatic distal tip, where the distal tube shaping supports either constant angle preservation when an interventional device spans angled sections or clinician-force moveable and retained delivery configurations through tortuous anatomy.
Stated Advantages
Not explicitly described in patent.
Documented Applications
Not explicitly described in patent.
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