Shunt implant devices with over-channel sensor arms
A sensor implant device can include a shunt body that forms a fluid conduit, a first anchor structure associated with a first axial end of the shunt body, a second anchor structure associated with a second axial end of the shunt body, and a first sensor device coupled to the first anchor structure, the first anchor structure being configured to hold the first sensor device in a sensing position over a channel area of the fluid conduit.
1 . A sensor implant device comprising:
a first sensor device; and
a shunt body formed by a continuous helical wire coil, the helical wire coil defining:
a first anchor flange at a first axial end of the shunt body formed by a first segment of the helical wire coil having a first diameter;
a shunt fluid conduit adjacent to the first anchor flange, the shunt fluid conduit formed by a second segment of the helical wire coil having a second diameter that is less than the first diameter;
a second anchor flange at an opposite axial end of the shunt fluid conduit from the first anchor flange, the second anchor flange formed by a third segment of the helical wire coil having a third diameter that is greater than the second diameter; and
a first sensor-support arm formed of a fourth segment of the helical wire coil continuing from an end of the second anchor flange, the first sensor-support arm continuing in a winding path that reduces to a coil having a fourth diameter that is less than the second diameter and is configured to hold the first sensor device over a channel area of the shunt fluid conduit at a position distally beyond an axial boundary of the second anchor flange such that an axial flow gap is presented between the axial boundary of the second anchor flange and the first sensor device to provide an unobstructed flow channel in a plane of the axial boundary of the second anchor flange.
2 . The sensor implant device of claim 1 , wherein, when in the position, the first sensor device overlaps an axis of the shunt fluid conduit.
3 . The sensor implant device of claim 2 , wherein, when in the position, a cylindrical body of the first sensor device is oriented coaxially with the shunt fluid conduit.
4 . The sensor implant device of claim 1 , wherein the first sensor-support arm is wrapped around a body of the first sensor device by a plurality of spaced winds around the body of the first sensor device.
5 . The sensor implant device of claim 1 , wherein the helical wire coil further comprises a fifth segment continuing from the end of the second anchor flange that forms a second sensor-support arm that winds in a common direction as the first sensor-support arm and extends from the second anchor flange over the channel area and holds the first sensor device.
6 . The sensor implant device of claim 5 , wherein the first sensor-support arm and the second sensor-support arm emanate from opposite circumferential sides of the second anchor flange shunt body.
7 . The sensor implant device of claim 6 , wherein both the first sensor-support arm and the second sensor-support arm both wrap around a circumference of a body of the first sensor device.
8 . The sensor implant device of claim 1 , wherein a cover is disposed around an outer diameter of at least a portion of the shunt fluid conduit formed by the second segment of the helical wire coil.
9 . The sensor implant device of claim 1 , wherein a cover is disposed around an inner diameter of at least a portion of the shunt fluid conduit formed by the second segment of the helical wire coil.
10 . The sensor implant device of claim 1 , further comprising a second sensor device coupled to a second sensor-support arm formed of a fifth segment of the helical wire coil continuing from an end of the second anchor flange, the second sensor-support arm being configured to hold the second sensor device over the channel area of the shunt fluid conduit.
11 . The sensor implant device of claim 10 , wherein a sensor transducer of the first sensor device and a sensor transducer of the second sensor device face in opposite directions.
12 . The sensor implant device of claim 11 , wherein the first sensor device and the second sensor device are coaxial.
13 . A sensor implant device comprising:
a coil wireform winding in a first direction and comprising, in a deployed configuration:
a shunt body portion formed of a plurality of winds of coil of the coil wireform and having a first diameter;
a first flange anchor portion formed of one or more first winds of coil of the coil wireform emanating from a first axial end of the shunt body portion and having a second diameter that is greater than the first diameter;
a first sensor-support arm formed of a continuous wire extension integrated with and emanating from the first flange anchor portion, the first sensor-support arm following a first curved path in the first direction and deflected radially over a channel area radially defined by the shunt body portion, a distal portion of the first sensor-support arm including a sensor-retention means holding a first sensor device; and
a second flange anchor portion formed of one or more second winds of coil of the coil wireform emanating from a second axial end of the shunt body portion;
wherein the first sensor-support arm is configured to hold the first sensor device at a position that is spaced beyond the first flange anchor portion such that an axial flow gap is presented between an axial boundary of the first flange anchor portion and a proximal-most portion of the first sensor device.
14 . The sensor implant device of claim 13 , further comprising a second sensor-support arm formed of a continuous wire extension integrated with and emanating from the second flange anchor portion, the second sensor-support arm following a second curved path in the first direction and deflected radially over the channel area defined by the shunt body portion.
15 . The sensor implant device of claim 13 , further comprising a second sensor-support arm emanating from the first flange anchor portion and deflected radially over the channel area defined by the shunt body portion, a distal portion of the second sensor-support arm being secured to the first sensor device.
16 . The sensor implant device of claim 13 , wherein the first sensor-support arm is deflected axially with respect to an axis of the shunt body portion at a greater angle than a deflection angle of the plurality of winds of coil of the shunt body portion.
17 . The sensor implant device of claim 13 , wherein the sensor-retention means comprises one or more winds of coil.
18 . The sensor implant device of claim 13 , wherein the sensor-retention means comprises a mechanical clip.
19 . The sensor implant device of claim 13 , further comprising a sealing means associated with the shunt body portion.
20 . The sensor implant device of claim 19 , wherein the sealing means comprises a fabric layer.
21 . The sensor implant device of claim 13 , wherein the coil wireform comprises shape memory material configured to assume the deployed configuration when deployed from a delivery catheter.
22 . The sensor implant device of claim 21 , wherein the coil wireform is configured to be compressed into a delivery configuration in which the shunt body portion and the first flange anchor portion have a third diameter that is smaller than the first diameter.