Electrical wire connection in intraluminal ultrasound imaging devices and system
An intraluminal imaging device includes a flexible elongate member configured to be positioned within a body lumen of a patient. The flexible elongate member includes a plurality of coaxial cables. Each of the plurality of coaxial cables includes a conductive shield layer. The intraluminal imaging device also includes an ultrasound imaging assembly positioned at a distal portion of the flexible elongate member and in communication with the plurality of coaxial cables. The ultrasound imaging assembly includes a transducer array configured to obtain ultrasound data and a conductive pad. The conductive shield layer of each of the plurality of coaxial cables is mechanically and electrically coupled to the conductive pad. Associated devices, systems, and methods are also provided.
1. An intraluminal imaging device, comprising:
a handle;
a flexible elongate member coupled to the handle, wherein the handle is configured to be manipulated by a user for manual control of the flexible elongate member within a body lumen of a patient, wherein the flexible elongate member comprises a plurality of coaxial cables, wherein each of the plurality of coaxial cables comprises a conductive shield layer; and
an ultrasound imaging assembly positioned at a distal portion of the flexible elongate member and in communication with the plurality of coaxial cables, the ultrasound imaging assembly comprising:
a transducer array configured to obtain ultrasound data;
a first conductive pad; and
a single solder mass positioned over the first conductive pad, wherein the single solder mass contacts and extends between the conductive shield layers of each of the plurality of coaxial cables, wherein the conductive shield layer of each of the plurality of coaxial cables is mechanically and electrically coupled to the first conductive pad and to each other by the single solder mass such that the single solder mass is configured to support a tensile pull load of at least 15 N occurring while the flexible elongate member is under the manual control.
2. The intraluminal imaging device of claim 1 , wherein the single solder mass is positioned around a perimeter of the plurality of coaxial cables.
3. The intraluminal imaging device of claim 1 ,
wherein each of the plurality of coaxial cables comprises an insulating jacket around the conductive shield layer,
wherein the conductive shield layer comprises an exposed portion without the insulating jacket, and
wherein corresponding dimensions of the exposed portion of the conductive shield layer and the first conductive pad are equal.
4. The intraluminal imaging device of claim 1 , wherein each of the plurality of coaxial cables is spaced apart, wherein the single solder mass is positioned between each of the plurality of coaxial cables.
5. The intraluminal imaging device of claim 1 , wherein the first conductive pad comprises an electrical ground for the plurality of coaxial cables.
6. The intraluminal imaging device of claim 1 , wherein the flexible elongate member comprises a catheter configured to be positioned within a heart of the patient.
7. The intraluminal imaging device of claim 1 , wherein the ultrasound imaging assembly further comprises a circuit board in communication with the transducer array, the first conductive pad positioned on a surface of the circuit board.
8. The intraluminal imaging device of claim 1 , wherein the conductive shield layer is at least semi-porous such that the single solder mass passes through the conductive shield layer.
9. The intraluminal imaging device of claim 1 , wherein the single solder mass is positioned between the conductive shield layer of each of the plurality of coaxial cables.
10. The intraluminal imaging device of claim 1 ,
wherein each of the plurality of coaxial cables comprises a center conductor and an insulation layer around the center conductor,
wherein the conductive shield layer is positioned around the insulation layer, and
wherein the single solder mass is positioned between the conductive shield layer and the insulation layer.
11. The intraluminal imaging device of claim 10 , wherein the single solder mass extends through the conductive shield layer.
12. The intraluminal imaging device of claim 1 , wherein the plurality of coaxial cables comprises a first row of coaxial cables and a second row of coaxial cables,
wherein the first row of coaxial cables is positioned over the first conductive pad, and
wherein the second row is positioned over the first row of coaxial cables.
13. The intraluminal imaging device of claim 12 , wherein the single solder mass is positioned between the first row of coaxial cables and the second row of coaxial cables.
14. The intraluminal imaging device of claim 1 ,
wherein each of the plurality of coaxial cables comprises a center conductor, wherein the ultrasound imaging assembly comprises a plurality of second conductive pads,
wherein the center conductor of each of the plurality of coaxial cables is mechanically and electrically coupled to a corresponding one of the plurality of second conductive pads, and
wherein the center conductor is configured to carry electrical signals to and from the ultrasound imaging assembly.
15. The intraluminal imaging device of claim 14 ,
wherein the flexible elongate member comprises a plurality of single conductor cables positioned over the plurality of coaxial cables,
wherein the ultrasound imaging assembly comprises a plurality of third conductive pads configured to be mechanically and electrically coupled to the plurality of single conductor cables, and
wherein the plurality of single conductor cables are configured to carry the electrical signals to and from the ultrasound imaging assembly.
16. A system, comprising:
an intraluminal imaging device, comprising:
a handle;
a flexible elongate member coupled to the handle, wherein the handle is configured to be manipulated by a user for manual control of the flexible elongate member within a body lumen of a patient, wherein the flexible elongate member comprises a plurality of coaxial cables, wherein each of the plurality of coaxial cables comprises a conductive shield layer; and
an ultrasound imaging assembly positioned at a distal portion of the flexible elongate member and in communication with the plurality of coaxial cables, the ultrasound imaging assembly comprising:
a transducer array configured to obtain ultrasound data;
a conductive pad; and
a single solder mass positioned over the conductive pad, wherein the single solder mass contacts and extends between the conductive shield layers of each of the plurality of coaxial cables, wherein the conductive shield layer of each of the plurality of coaxial cables is mechanically and electrically coupled to the conductive pad and to each other by the single solder mass such that the single solder mass is configured to support a tensile pull load of at least 15 N occurring while the flexible elongate member is under the manual control; and
a computer in communication with the intraluminal imaging device and configured to generate an ultrasound image based on the ultrasound data.