Heart phantom assembly
A heart phantom assembly comprises a mechanical actuator system comprising a support operatively supporting at least two actuators and a fixing device. A phantom interface is operatively connected to the at least two actuators to be displaceable in at least one translational degree of freedom and at least one rotational degree of freedom as a function of actuation from the at least two actuators. A deformable heart phantom is connected at an end to the phantom interface, and at another end to the fixing device, to be subjected to compression/expansion in response to movements of the phantom interface in the translational degree of freedom, and to torsion in response to movements of the phantom interface in the rotational degree of freedom.
1. A heart phantom assembly comprising:
a mechanical actuator system comprising a support operatively supporting at least two actuators and a fixing device, and a phantom interface operatively connected to the at least two actuators to be displaceable in at least one translational degree of freedom and at least one rotational degree of freedom as a function of actuation from the at least two actuators; and
a deformable heart phantom connected at an end to the phantom interface, and at another end to the fixing device, the deformable heart phantom made in a systolic condition to be subjected to compression/expansion in response to movements of the phantom interface in the translational degree of freedom, and to torsion in response to movements of the phantom interface in the rotational degree of freedom.
2. The heart phantom assembly according to claim 1 , further comprising liquid injection means connected to the phantom interface and in fluid communication with the deformable heart phantom to inject liquid therein to inflate the deformable heart phantom.
3. The heart phantom assembly according to claim 2 , further comprising a conduit in the phantom interface in fluid communication with an inner cavity of the deformable heart phantom and with the liquid injection means, for injection of fluid therethrough.
4. The heart phantom assembly according to claim 2 , wherein the mechanical actuator system comprises three of the actuators, with one of the actuators configured to provide the one translational degree of freedom, another of the actuators configured to provide the one rotational degree of freedom, and another of the actuators configured to actuate the liquid injection means.
5. The heart phantom assembly according to claim 1 , wherein the one of the actuators configured to provide the one translational degree of freedom is a linear actuator, with a direction thereof parallel to a longitudinal axis of the heart phantom.
6. The heart phantom assembly according to claim 1 , wherein the one of the actuators configured to provide the one rotational degree of freedom is a linear actuator, with a direction thereof transverse to a longitudinal axis of the heart phantom, with a rack and pinion assembly operatively connecting the actuator to the phantom interface.
7. The heart phantom assembly according to claim 1 , wherein the heart phantom has a flange at an end thereof configured for connection with the fixing device.
8. The heart phantom assembly according to claim 7 , wherein the flange is a monolithic part of the heart phantom.
9. The heart phantom assembly according to claim 1 , wherein the heart phantom has a ring-shaped part at an end thereof configured for connection with the fixing device.
10. The heart phantom assembly according to claim 9 , wherein the ring-shaped part is made of a material having a greater hardness than that of a deformable body of the heart phantom.
11. The heart phantom assembly according to claim 9 , wherein the ring-shaped part is comolded with the heart phantom.
12. The heart phantom assembly according to claim 9 , wherein the ring-shaped part has a central toothed opening.
13. The heart phantom assembly according to claim 1 , wherein the heart phantom has an outer cylindrical surface.
14. The heart phantom assembly according to claim 1 , wherein the heart phantom has an ogive-shaped inner cavity.
15. The heart phantom assembly according to claim 1 , wherein a surface of an inner cavity of the heart phantom has a plurality of hollows and protrusions.
16. The heart phantom assembly according to claim 1 , further comprising an apical component at an end of the heart phantom, the apical component having a curved convex portion received in a cavity at an end of the heart phantom, the apical component being connected to the fixing device.
17. The heart phantom assembly according to claim 1 , wherein the at least two actuators are pneumatically actuated.
18. A heart phantom assembly and casing comprising:
the heart phantom assembly according to claim 1 ; and
a casing defining an inner cavity, the inner cavity configured for receiving the deformable heart portion and at least a part of the mechanical actuator system, the casing being made of a non-metallic material.
19. The heart phantom assembly and casing according to claim 18 , wherein the casing has a narrower end configured to receive the heart phantom, and a larger end configured to receive at least part of the mechanical actuator.
20. The heart phantom assembly and casing according to claim 18 , further comprising actuators in the casing between the support of the mechanical actuator system and the casing configured for displacing the heart phantom assembly in the inner cavity of the casing.