Cardiac implant devices with integrated pressure sensing
A sensor implant device includes a shunt structure comprising a flow path conduit and a plurality of arms configured to secure the shunt structure to a tissue wall, and a pressure sensor device attached to one of the plurality of arms of the shunt structure. The pressure sensor device comprises one or more sensor elements, an antenna, control circuitry electrically coupled to the one or more sensor elements and the antenna, and a housing that houses the control circuitry.
1 . A sensor implant device comprising:
a shunt structure comprising a flow path conduit and a plurality of arms configured to secure the shunt structure to a tissue wall;
a pressure sensor device comprising:
one or more sensor elements;
an antenna;
control circuitry electrically coupled to the one or more sensor elements and the antenna; and
a housing that houses the control circuitry; and
a sensor attachment component integrally formed with one of the plurality of arms of the shunt structure, wherein the pressure sensor device is attached to the sensor attachment component.
2 . The sensor implant device of claim 1 , wherein the sensor attachment component is a support extension extending from the one of the plurality of arms, and the pressure sensor device is attached to the support extension.
3 . The sensor implant device of claim 2 , wherein the support extension has one or more retention features that wrap at least partially around the pressure sensor device.
4 . The sensor implant device of claim 2 , wherein the support extension and the housing of the pressure sensor device are a unitary form.
5 . The sensor implant device of claim 1 , wherein the housing has a cylindrical form with a proximal end portion and a distal end portion, and the one or more sensor elements comprises a first sensor element disposed at the proximal end and a second sensor element disposed at the distal end.
6 . The sensor implant device of claim 1 , wherein the housing has a cylindrical form, the antenna comprises a cylindrical ferrite core and a conductive wire coil wrapped around the ferrite core, and the antenna is housed within the housing.
7 . The sensor implant device of claim 1 , wherein the antenna is electrically coupled to the control circuitry via a tether.
8 . The sensor implant device of claim 7 , wherein the antenna is a flat spiral antenna.
9 . The sensor implant device of claim 7 , wherein the antenna is disposed at least partially within a hermetically-sealed flexible membrane.
10 . The sensor implant device of claim 1 , wherein the antenna is wrapped around the flow path conduit of the shunt structure.
11 . The sensor implant device of claim 10 , wherein the one or more sensor elements extends away from the antenna along a dimension parallel to a flow path axis through the flow path conduit.
12 . The sensor implant device of claim 1 , wherein the pressure sensor device projects away from a longitudinal axis of the shunt structure.
13 . The sensor implant device of claim 1 , wherein the shunt structure includes a plurality of interconnected struts forming cells therebetween.
14 . The sensor implant device of claim 1 , wherein the flow path conduit of the shunt structure is configured to be positioned in a tissue wall between a coronary sinus and a left atrium.
15 . The sensor implant device of claim 14 , wherein the pressure sensor device is configured to be positioned in the coronary sinus or the left atrium.
16 . The sensor implant device of claim 14 , wherein the housing and the one or more sensor elements of the pressure sensor device is positioned in the left atrium, and the antenna is tethered to the pressure sensor device and is positioned in the coronary sinus.
17 . The sensor implant device of claim 1 , wherein the support extension is a continuous extension from the one of the plurality of arms of the shunt structure.
18 . The sensor implant device of claim 17 , wherein the shunt structure and the support extension are made out of a memory metal.
19 . The sensor implant device of claim 1 , wherein the sensor attachment component has one or more retention features that at least partially encase the pressure sensor device.
20 . A sensor implant device comprising:
a shunt structure comprising a flow path conduit, a plurality of arms configured to secure the shunt structure to a tissue wall, and a support extension extending from and integrally formed with one of the plurality of arms; and
a pressure sensor device attached to the support extension extending from the one of the plurality of arms of the shunt structure, the pressure sensor device comprising:
one or more sensor elements;
an antenna;
control circuitry electrically coupled to the one or more sensor elements and the antenna; and
a housing that houses the control circuitry.
21 . A sensor implant device comprising:
a shunt structure comprising a flow path conduit and a plurality of arms configured to secure the shunt structure to a tissue wall;
a pressure sensor device attached to one of the plurality of arms of the shunt structure, the pressure sensor device comprising:
one or more sensor elements;
an antenna;
control circuitry electrically coupled to the one or more sensor elements and the antenna; and
a housing that houses the control circuitry; and
a pouch attached to the one of the plurality of arms, the pressure sensor device slidingly disposed within the pouch.
22 . The sensor implant device of claim 21 , wherein a tension and/or compression of the pouch serves to retain the pressure sensor device in a fixed position within the pouch.
23 . The sensor implant device of claim 21 , wherein the pouch is a suture-based or cloth-based pouch.