CN-122028851-A - Intravascular ultrasound catheter

Abstract

Intravascular imaging catheters and methods for making and using intravascular imaging catheters are disclosed. An example intravascular imaging catheter may include an elongate catheter shaft having a distal region and a proximal region. A guidewire lumen may be defined in the elongate catheter shaft. The distal region may include an imaging window defined by an open gap in the elongate catheter shaft. An imaging core may be disposed within the elongate catheter shaft. The imaging core may include an imaging device configured to be axially aligned with the imaging window.

Inventors

• Cass Alexander Hansen
• Joel M. Vasdick
• SKUBITZ SEAN P.

Assignees

• 波士顿科学国际有限公司

Dates

Publication Date

20260512

Application Date

20240813

Priority Date

20230817

Claims (15)

1. 1. An intravascular imaging catheter comprising: an elongate catheter shaft having a distal region and a proximal region; wherein a guidewire lumen is defined in the elongate catheter shaft; wherein the distal region comprises an imaging window defined by an open gap in the elongate catheter shaft; An imaging core disposed within the elongate catheter shaft, and Wherein the imaging core comprises an imaging device configured to be axially aligned with the imaging window.
2. 2. The intravascular imaging catheter according to claim 1 wherein said distal region is connected to said proximal region by a bridging region of said elongate catheter shaft.
3. 3. The intravascular imaging catheter according to any one of claims 1 to 2 wherein said guidewire lumen is defined by a guidewire lumen shaft extending from said proximal region of said elongate catheter shaft to said distal region of said elongate catheter shaft.
4. 4. The intravascular imaging catheter according to claim 3 wherein said distal region is coupled to said proximal region by said guidewire lumen shaft.
5. 5. The intravascular imaging catheter according to any one of claims 1 to 4 wherein said open gap is formed by an incision in said elongate catheter shaft.
6. 6. The intravascular imaging catheter according to any one of claims 1 to 5 wherein said distal region of said elongate catheter shaft has a proximal end, wherein said proximal region of said elongate catheter shaft has a distal end, and wherein said open gap is disposed between said proximal end of said distal region and said distal end of said proximal region.
7. 7. The intravascular imaging catheter according to any one of claims 1 to 6 wherein said imaging core is configured to be displaced between a delivery position in which said imaging device is disposed within said distal region and an imaging position in which said imaging device is aligned with said imaging window.
8. 8. The intravascular imaging catheter according to claim 7 wherein displacement of said imaging core from said delivery position to said imaging position comprises axially displacing said imaging core relative to said elongate catheter shaft.
9. 9. The intravascular imaging catheter according to any one of claims 1 to 8 wherein said imaging device is coupled to an imaging housing.
10. 10. The intravascular imaging catheter according to claim 9 wherein said imaging housing has a proximal section that extends into said proximal region of said elongate catheter shaft.
11. 11. The intravascular imaging catheter according to any one of claims 9 to 10 wherein said imaging housing has a distal section that extends into said distal region of said elongate catheter shaft.
12. 12. The intravascular imaging catheter according to any one of claims 1 to 11 wherein said imaging device comprises an ultrasound transducer.
13. 13. An intravascular imaging catheter comprising: An elongate imaging catheter sheath having a distal end region, a proximal region, an imaging window region disposed between the distal end region and the proximal region; Wherein the imaging window area is defined by an opening in the elongate imaging catheter sheath; a guidewire lumen shaft extending from the proximal region of the elongate imaging catheter sheath to the distal region of the elongate imaging catheter sheath; An imaging core disposed within the elongate imaging catheter sheath; wherein the imaging core comprises an ultrasound imaging device, and Wherein the imaging core is configured to be displaced between a delivery position in which the ultrasound imaging device is disposed within the distal region and an imaging position in which the ultrasound imaging device is aligned with the imaging window region.
14. 14. The intravascular imaging catheter according to claim 13 wherein said distal region of said elongate imaging catheter sheath is coupled to said proximal region of said elongate imaging catheter sheath by said guidewire lumen shaft.
15. 15. The intravascular imaging catheter according to any one of claims 13 to 14 wherein said distal region of said elongate imaging catheter sheath has a proximal end, wherein said proximal region of said elongate imaging catheter sheath has a distal end, and wherein said opening is disposed between said proximal end of said distal region and said distal end of said proximal region.

Description

Intravascular ultrasound catheter Cross Reference to Related Applications The present application claims priority from U.S. provisional application No. 63/533,234 filed on 8.17 of 2023, the entire disclosure of which is hereby incorporated by reference. Technical Field The present disclosure relates to medical devices, and methods for manufacturing medical devices. More particularly, the present disclosure relates to imaging devices, such as intravascular ultrasound catheters. Background A wide variety of medical devices have been developed for medical use, for example, intravascular use. Some of these devices include guidewires, catheters, and the like. These devices are manufactured by and may be used in accordance with any of a variety of different manufacturing methods. Each of the known medical devices and methods has certain advantages and disadvantages. There is a continuing need to provide alternative medical devices and alternative methods for making and using medical devices. Disclosure of Invention The present disclosure provides for the design, materials, methods of manufacture, and alternatives for use of medical devices. An intravascular imaging catheter is disclosed herein. An intravascular imaging catheter includes an elongate catheter shaft having a distal region and a proximal region, wherein a guidewire lumen is defined in the elongate catheter shaft, wherein the distal region includes an imaging window defined by an open gap in the elongate catheter shaft, an imaging core disposed within the elongate catheter shaft, and wherein the imaging core includes an imaging device configured to be axially aligned with the imaging window. Alternatively or additionally to any of the embodiments above, the distal region is connected to the proximal region by a bridging region of the elongate catheter shaft. Alternatively or additionally to any of the embodiments above, the guidewire lumen is defined by a guidewire lumen shaft extending from a proximal region of the elongate catheter shaft to a distal region of the elongate catheter shaft. Alternatively or additionally to any of the embodiments above, the distal region is coupled to the proximal region by a guidewire lumen shaft. Alternatively or additionally to any of the embodiments above, the open gap is formed by a cut in the elongate catheter shaft. Alternatively or additionally to any of the embodiments above, the distal region of the elongate catheter shaft has a proximal end, wherein the proximal region of the elongate catheter shaft has a distal end, and wherein an open gap is disposed between the proximal end of the distal region and the distal end of the proximal region. Alternatively or additionally to any of the embodiments above, the imaging core is configured to be displaced between a delivery position in which the imaging device is disposed within the distal region and an imaging position in which the imaging device is aligned with the imaging window. Alternatively or additionally to any of the embodiments above, the displacing of the imaging core from the delivery position to the imaging position includes axially displacing the imaging core relative to the elongate catheter shaft. Alternatively or additionally to any of the embodiments above, an imaging device is coupled to the imaging housing. Alternatively or additionally to any of the embodiments above, the imaging housing has a proximal section that extends into a proximal region of the elongate catheter shaft. Alternatively or additionally to any of the embodiments above, the imaging housing has a distal section that extends into a distal region of the elongate catheter shaft. Alternatively or additionally to any of the embodiments above, the imaging device includes an ultrasound transducer. An intravascular imaging catheter is disclosed herein. The intravascular imaging catheter comprises an elongate imaging catheter sheath having a distal region, a proximal region, an imaging window region disposed between the distal region and the proximal region, wherein the imaging window region is defined by an opening in the elongate imaging catheter sheath, a guidewire lumen shaft extending from the proximal region of the elongate imaging catheter sheath to the distal region of the elongate imaging catheter sheath, an imaging core disposed within the elongate imaging catheter sheath, wherein the imaging core comprises an ultrasound imaging device, and wherein the imaging core is configured to be displaced between a delivery position in which the ultrasound imaging device is disposed within the distal region and an imaging position in which the ultrasound imaging device is aligned with the imaging window region. Alternatively or additionally to any of the embodiments above, the distal region of the elongate imaging catheter sheath is coupled to the proximal region of the elongate imaging catheter sheath by a guidewire lumen shaft. Alternatively or additionally to any of the embodiments abo