DEKA Products Limited Partnership Patente

There is described a flow meter comprising: a coupler adapted to couple to a drip chamber; a support member operatively coupled to the coupler; an image sensor having a field of view and operatively coupled to the support member, wherein the image sensor is positioned to view the drip chamber within the field of view; and at least one processor operatively coupled to the image sensor to receive image data therefrom, wherein the at least one processor compares an image of the image data to a reference image to estimate at least one parameter of liquid within the drip chamber.

A cannula for connecting a vessel of a tissue to be perfused to a perfusion loop is disclosed. The cannula comprises a cannula body with a lumen extending there through and a tee fitting. The tee fitting has: a primary cannula interface, a secondary cannula interface, a perfusion loop interface, a tee fitting interface at a first end of the cannula body, a tissue support interface configured to receive a terminal end of the vessel of the tissue to be perfused and two clamping arms pivotally connected to said cannula body operable to retain the vessel of the tissue to be perfused in compression in contact with the tissue support interface.

An infusion device. The infusion device includes a top portion comprising an introduction needle, and a bottom portion comprising a cannula, the top portion removably attached to the bottom portion, wherein the introduction needle is used to insert the cannula, and wherein after insertion, the top portion is removed from the bottom portion.

An endoscope comprises a handle and a shaft with an optical housing at the distal end of the shaft enclosing a camera sensor positioned so that its optical axis is at an angle with respect to a rotational axis of the shaft. The camera sensor is rotatable with the shaft relative to a proximal housing of the handle. A rotation sensor in the handle detects the rotational angle of the camera sensor with respect to the proximal housing. A processor can correct the angular orientation of an image from the image sensor, converting of a rotating variable field of view to a translating variable field of view. A processor can apply variable smoothing of the rotation of the displayed image so that smoothing during rotational deceleration is greater than smoothing during rotational acceleration. The shaft may be enclosed in a trocar that allows for a space between the shaft and trocar that can be used to carry irrigation fluid to or from a space at the end of the shaft.

There is described a flow meter comprising: a coupler adapted to couple to a drip chamber; a support member operatively coupled to the coupler; an image sensor having a field of view and operatively coupled to the support member, wherein the image sensor is positioned to view the drip chamber within the field of view; and at least one processor operatively coupled to the image sensor to receive image data therefrom, wherein the at least one processor compares an image of the image data to a reference image to estimate at least one parameter of liquid within the drip chamber.

There is described a method for controlling a flow of fluid through a drip chamber, the method comprising: capturing, using an image sensor, a plurality of images of a drip chamber; estimating, using a processor, a flow rate through the drip chamber using the plurality of images; receiving a desired flow rate from a user; comparing, using the processor, the estimated flow rate with a desired flow rate; determining, using the processor, a magnitude and a direction of valve actuation to achieve the desired flow rate; and actuating a valve in accordance with the determined magnitude and direction, to achieve the desired flow rate.

Disclosed is a method of controlling a robot. The method comprises: selecting a point and/or a route; and invoking a control, thereby enabling transmitting instructions to which a robot may respond by traveling to the point and/or along the route.

A medical device is described. The medical device is configured to operatively receive a first measured physiological parameter of a patient from a first medical sensor and a second physiological parameter of the patient from a second medical sensor. The medical device is further configured to determine a medical condition exists when a first pattern is detected in the first measured physiological parameter and a second pattern is detected in the second measured physiological parameter. The first and second patterns occur within a predetermined window of time. The medical device is further configured to communicate with a gateway using a web service, wherein the medical device is a web client of the web service, and the gateway is a web server of the web service.

A fluid handling cassette for use in a medical infusion system, the fluid handling cassette comprising: a generally planar body having first and second pump chambers each formed as a depression in a first side of the body, each pump chamber having a first port and a second port connecting the respective pump chamber to a second side of the body; a plurality of valve wells on the first side of the body each comprising a valve port and an opening connecting a respective valve well to the second side of the body; a flexible membrane attached to and covering the first side of the body over the first and second pump chambers and the plurality of valve wells, first and second pump chamber portions of the membrane over the first and second pump chambers, respectively; a plurality of cassette ports located on a first end of the body; and a first and second fluid flowpath on the second side of the body, each fluid flowpath connected to the first or second port of a respective pump chamber via at least one of the plurality of valve wells; wherein the first and second fluid flowpaths are each connected to at least one of the plurality of cassette ports via a respective one of the plurality of valve wells.

There is disclosed herein a control system (2932A) for a heater of an automated peritoneal dialysis apparatus comprising: a resistive heating element; a solid state relay connecting an electrical power source to the heating element; a first processor (2931) configured to generate and send a pulse width modulated signal to a gating circuit; a second processor (2933) configured to generate and send a safety signal to the gating circuit; wherein the gating circuit is configured to reproduce or transmit the pulse width modulated signal to operate the solid state relay if the safety signal is in a first mode, and is configured to prevent the operation of the solid state relay if the safety signal is in a second mode.

A peritoneal dialysis system for performing peritoneal dialysis using a pre-determined total volume of dialysate and arranged to employ a plurality of therapy cycles comprising a fill phase in which dialysate is delivered from the dialysis system via a patient line, a dwell phase, and a drain phase in which fluid is drained via the patient line, the system comprising: at least one pump chamber controllable to move fluid; a patient line in fluid communication with the at least one pump chamber to receive dialysate from the at least one pump chamber for delivery and to deliver fluid to the at least one pump chamber; a plurality of valves to selectively control flow in flow channels of the dialysis system; and a control system arranged to control the dialysis system to perform the following: control the at least one pump chamber and the plurality of valves to deliver a first infusion volume of dialysate to the patient line as part of a therapy cycle; measure the first infusion volume of dialysate delivered to the patient line during the therapy cycle; control the at least one pump chamber and the plurality of valves to receive fluid from the patient line as part of the therapy cycle; measure a volume of fluid received from the patient line during the therapy cycle; estimate a volume of ultrafiltration fluid produced during the therapy cycle; estimate a volume of residual fluid for the therapy cycle based on the measured volume of fluid received, the estimated ultrafiltration fluid produced and the measured first infusion volume of dialysate delivered; determine a value for a maximum volume of fluid at the end of a dwell phase; and initiate a next therapy cycle if the estimated volume of residual fluid for the therapy cycle plus a volume of dialysate to be delivered for the next therapy cycle plus an estimated volume of ultrafiltration fluid produced for the next therapy cycle does not exceed the maximum volume of fluid at the end of a dwell phase.

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