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    Apparatus for controlling fluid flow
    1.
    发明专利
    Apparatus for controlling fluid flow 未知

    公开(公告)号：NZ772272A

    公开(公告)日：2022-07-29

    申请号：NZ77227212

    申请日：2012-12-21

    Applicant: DEKA PRODUCTS LP

    Inventor： KAMEN DEAN ,  PERET BOB ,  KANE DEREK ,  YOO BRIAN ,  TRACEY BRIAN ,  JOHNSON MATTHEW ,  SCHNELLINGER THOMAS ,  LANGENFELD CHRISTOPHER ,  LANIGAN RICHARD ,  BRYANT JR ,  MURPHY COLIN ,  KERWIN JOHN ,  SLATE MICHAEL ,  USMAN FARRUKH ,  CLARKE KAITLYN

    IPC: A61M5/168 ,  G01N21/85

    Abstract: An apparatus, comprising: a coupler adapted to couple to a drip chamber; a support member operatively coupled to the coupler; and an image sensor having a field of view and operatively coupled to the support member, wherein the image sensor is configured to view the drip chamber within the field of view; at least one processor operatively coupled to the image sensor to receive image data therefrom, wherein the at least one processor is configured to: capture a first image; create a first thresholded image from the first image by comparing each pixel of the first image to a threshold value; determine a set of pixels within the first thresholded image connected to a predetermined set of pixels within the first thresholded image; filter all remaining pixels of the first thresholded image that are not with the set of pixels, the filter operates on a pixel-by-pixel basis within the time domain to generate a first filtered image; remove pixels determined to not be part of a drop from the first thresholded image using the first filtered image to generate a second image; determine a second set of pixels within the second image connected to a predetermined set of pixels within the second image to generate a third image, the third image identifies the second set of pixels within the second image; determine a first length of the drop by counting the number of rows containing pixels corresponding to the second set of pixels within the third image, the first length corresponding to a first estimated drop size; update a background image using the first image; create a second thresholded image by comparing first image with background image; sum the rows of second thresholded to create a plurality of row sums, each row sum corresponds to a row of the second thresholded image; start at a row position of the second thresholded image having a first sum of the plurality of sums that corresponds to the first length; increment the row position until the row position corresponds to a corresponding row sum that is zero; determine a second length is equal to the present row position, the second length corresponding to a second estimated drop size; and average the first and second lengths to determine a average length, the average length corresponding to a third estimated drop size.

    Apparatus for controlling fluid flow
    4.
    发明专利
    Apparatus for controlling fluid flow 未知

    公开(公告)号：NZ741745A

    公开(公告)日：2019-10-25

    申请号：NZ74174512

    申请日：2012-12-21

    Applicant: DEKA PRODUCTS LP

    Inventor： KAMEN DEAN ,  PERET BOB ,  KANE DEREK ,  YOO BRIAN ,  TRACEY BRIAN ,  JOHNSON MATTHEW ,  SCHNELLINGER THOMAS ,  LANGENFELD CHRISTOPHER ,  LANIGAN RICHARD ,  BRYANT JR ,  MURPHY COLIN ,  KERWIN JOHN ,  SLATE MICHAEL ,  USMAN FARRUKH ,  CLARKE KAITLYN

    IPC: A61M5/168 ,  G01N21/85

    Abstract: A flow meter, comprising: a coupler adapted to couple to a drip chamber (4); a support member operatively coupled to the coupler; an image sensor (11) 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; a backlight (18) having at least one light, wherein the backlight is coupled to the support member, wherein the backlight is adapted to illuminate the image sensor to expose the image sensor such that the field of view of the image sensor at least partially images at least a portion of the drip chamber; and at least one processor operatively coupled to the image sensor to receive image data therefrom, wherein the at least one processor is configured to: select a region of interest of the image sensor; determine if a pixel of the image sensor is within the region of interest; activate the light of the backlight if the pixel of the image sensor is within the region of interest; and expose the pixel of the image sensor.

    Apparatus for infusing fluid
    6.
    发明专利
    Apparatus for infusing fluid 未知

    公开(公告)号：NZ734564A

    公开(公告)日：2019-05-31

    申请号：NZ73456413

    申请日：2013-03-15

    Applicant: DEKA PRODUCTS LP

    Inventor： PARKER JONATHAN ,  BAIER MICHAEL ,  LANGENFELD CHRISTOPHER ,  BIASI JOHN ,  VAN DER MERWE DIRK ,  BLUMBERG DAVID ,  SLATE MICHAEL ,  PAWLOWSKI DANIEL ,  SABIN ERIK ,  NORRIS MICHAEL ,  THERRIEN ALEXANDER ,  KAMEN DEAN ,  MURPHY COLIN ,  KERWIN JOHN ,  GRAY LARRY B ,  PLACE MICHAEL S

    IPC: A61M5/168 ,  A61M5/142

    Abstract: The invention provides a pump for pumping fluid includes a tube platen, a plunger, a bias member, inlet and outlet valves, an actuator mechanism, a door having a lever and an interlock, a pressure sensor, and a processor. The plunger is configured for actuation toward and away from the infusion-tube when the tube platen is disposed opposite to the plunger. The bias member urges the plunger toward the tube platen. The inlet valve is upstream of the plunger and is configured for actuation between an occluding position and a non-occluding position. The outlet valve is downstream of the plunger and is configured for actuation between an occluding position and a non-occluding position. The actuator mechanism is configured to control the actuation of the plunger, the inlet valve and the outlet valve. The interlock is configured to mechanically engage the lever when the door is in an open position. The pressure sensor is disposed adjacent to at least one of the inlet valve, the outlet valve, and the plunger. The processor is coupled to the pressure sensor to receive a pressure signal from the pressure sensor. The inlet valve, the outlet valve, and the plunger are configured to pump fluid in a plurality of cycles, each cycle having a trough pressure level and a peak pressure level. By measuring variance in pressure levels, the pump is able to determine the presence of downstream occlusion which prevents or restricts pumping of the fluid.

    Apparatus for infusing fluid
    9.
    发明专利
    Apparatus for infusing fluid 未知

    公开(公告)号：NZ740655A

    公开(公告)日：2019-03-29

    申请号：NZ74065513

    申请日：2013-03-15

    Applicant: DEKA PRODUCTS LP

    Inventor： PARKER JONATHAN ,  BAIER MICHAEL ,  LANGENFELD CHRISTOPHER ,  BIASI JOHN ,  VAN DER MERWE DIRK ,  BLUMBERG DAVID ,  SLATE MICHAEL ,  PAWLOWSKI DANIEL ,  SABIN ERIK ,  NORRIS MICHAEL ,  THERRIEN ALEXANDER ,  KAMEN DEAN ,  MURPHY COLIN ,  KERWIN JOHN ,  GRAY LARRY B ,  PLACE MICHAEL S

    IPC: A61M5/168 ,  A61M5/142

    Abstract: A pump for pumping fluid includes a tube platen, a plunger configured for actuation toward and away from the tube platen when the tube platen is disposed opposite to the plunger, a bias member configured to urge the plunger toward the tube platen, an inlet valve upstream of the plunger configured for actuation between an occluding position and a non-occluding position, an outlet valve downstream of the plunger configured for actuation between an occluding position and a non-occluding position, an actuator mechanism configured to control the actuation of the plunger, the inlet valve and the outlet valve, a pressure sensor disposed adjacent to at least one of the inlet valve, the outlet valve, and the plunger, and a processor coupled to the pressure sensor to receive a pressure signal from the pressure sensor, wherein, the inlet valve, the outlet valve, and the plunger are configured to pump fluid in a plurality of cycles, each cycle having a trough pressure level and a peak pressure level, and the processor is configured to, using the pressure signal, determine a downstream occlusion exists when a difference between a first trough pressure level of a first cycle and a second trough pressure level of a second cycle is greater than a predetermined threshold, the first and second cycles are cycles of the plurality of cycles, and wherein the plunger is configured to engage and disengage from the actuator mechanism and the pressure sensor is configured to measure the peak pressure level after the plunger disengages from the actuator in each cycle. Such an arrangement permits a pump which provides efficient and accurate notice of downstream occlusion in order to promote patient safety.

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