Abstract:
PROBLEM TO BE SOLVED: To provide a pump that imparts low shear forces and turbulence on the fluid being pumped.SOLUTION: A reciprocating positive-displacement pump includes: a hemispherical rigid chamber wall; a flexible membrane attached to the rigid chamber wall, so that the flexible membrane and rigid chamber wall define a pumping chamber; an inlet for directing flow through the rigid chamber wall into the pumping chamber in a direction that is substantially tangential to the rigid chamber wall; and an outlet for directing flow through the rigid chamber wall out of the pumping chamber in a direction that is substantially tangential to the rigid chamber wall.
Abstract:
PROBLEM TO BE SOLVED: To provide pumps that impart low shear force and turbulence to a fluid being pumped.SOLUTION: A reciprocating positive-displacement pump comprises: a hemispherical rigid chamber wall; a flexible membrane attached to the rigid chamber wall so that the flexible membrane and the rigid chamber wall define a pumping chamber; an inlet for directing a flow through the rigid chamber wall into the pumping chamber in a direction that is substantially tangential to the rigid chamber wall; and an outlet for directing a flow through the rigid chamber wall out of the pumping chamber in a direction that is substantially tangential to the rigid chamber wall.
Abstract:
PROBLEM TO BE SOLVED: To provide a sensor apparatus and a sensor apparatus system for use in conjugation with a cassette including a disposable or replaceable cassette (3900).SOLUTION: In some embodiments, a cassette (3900) includes a thermal well (5100) for permitting the sensing of various properties of a subject medium. The thermal well (5100) includes a hollow housing of a thermally-conductive material. In other embodiments, the cassette (3900) includes sensor leads (6016) for sensing of various properties of the subject medium. The thermal well (5100) has an inner surface shaped so as to form a mating relationship with a sensing probe. The mating part thermally couples the inner surface with the sensing probe. In some embodiments, the thermal well is located on a disposable portion and the sensing probe on a reusable portion.
Abstract:
A cardiopulmonary bypass system utilizing membrane-based reciprocating positive displacement blood pumps (8300,8400) ('pod pumps'). In one aspect, the pod pumps are constructed to provide reduced shear forces on the blood being pumped. In another aspect blood flow through the pod pumps can be controlled by a controller using information from pressure sensors in the control chamber of the pod pumps. In another aspect, the pod pumps are included on a disposable unit that can be received and held by a receptacle means on a base unit, the base unit also providing pressurized control fluid to the pod pumps on the disposable unit through the receptacle means.
Abstract:
A prosthetic arm apparatus including a plurality of segments that provide a user of the prosthetic arm apparatus with substantially the same movement capability and function as a human arm. The segments are connectable to one another and connectable to a prosthetic support apparatus that may be adorned by the user. Each segment of the plurality of segments provides a portion of the movement capability, enabling the plurality of connected segments connected to the harness mount to provide substantially the same movement capability as that lacking in the user. A dynamic support apparatus for supporting the prosthetic arm apparatus has a frame, a dynamic interface, a temperature control mechanism, and a control system. The dynamic support apparatus has a control system that is operably connected to the dynamic interface and controls the dynamic interface to change its geometry.
Abstract:
A system for control of a prosthetic device includes at least one Inertial Measurement Unit (7096) detecting orientation of a user's foot. The at least one Inertial Measurement Unit is in communication with a device module (7017) configured to command at least one actuator (7013) of a prosthetic device. The at least one Inertial Measurement unit sends output signals related to orientation of the user's foot to the device module and the device module controls the at least one actuator of the prosthetic device based on the signals from the at least one Inertial Measurement Unit.
Abstract:
A dynamic support apparatus. The dynamic support apparatus includes a cushion (14), at least one actuator (16) wherein the at least one actuator defines an interior volume and wherein the interior volume may be configured to be at least partially filled with a fluid, and a support (50) disposed in the interior volume wherein the support configured to support an occupant when the interior volume is not filled with the fluid such that the support is sufficient to support the occupant.
Abstract:
A peristaltic pump, and related system method are provided. The peristaltic pump includes a cam shaft, first and second pinch-valve cams, first and second pinch-valve cam followers, a plunger cam, a plunger-cam follower, a tube receiver, and a spring-biased plunger. The first and second pinch-valve cams are coupled to the cam shaft. The first and second pinch-valve cam followers each engage the first and second pinch-valve cams, respectively. The plunger cam is coupled to the cam shaft. The plunger-cam follower engages the plunger cam. The tube receiver is configured to receive a tube. The spring-biased plunger is coupled to the plunger-cam follower such that the expansion of the plunger cam along a radial angle intersecting the plunger-cam follower as the cam shaft rotates pushes the plunger cam follower towards the plunger and thereby disengages the spring-biased plunger from the tube. A spring coupled to the spring-biased plunger biases the spring-biased plunger to apply the crushing force to the tube.
Abstract:
A prosthetic arm apparatus including a plurality of segments that provide a user of the prosthetic arm apparatus with substantially the same movement capability and function as a human arm. The segments are connectable to one another and connectable to a prosthetic support apparatus that may be adorned by the user. Some segments may provide movement about more than one axis using a single actuator. The prosthetic arm apparatus may include a user interface incorporated therein and may include one or more communication systems for communicating with external devices.
Abstract:
A control unit system. The system includes a control unit which includes a control unit charging interface, at least one magnet located proximate to the control unit charging interface, at least one actuator, a detachable manifold including at least one magnet, fluidly coupled to the at least one actuator, a pump connected to the at least one actuator for causing actuation thereof, and a control system for controlling the pump, wherein the control system controls the pump to actuate the at least one actuator at least in response to a signal received by the control system. The system also includes a recharging device configured to receive the control unit, the recharging device including a reed switch, wherein when the magnet in the control unit is located proximate to the reed switch, the switch is activated.