Medical Treatment System and Methods Using a Plurality of Fluid Lines

Patent metadata

Field	Value
Publication number	US-2024255337-A1
Application number	US-202418606446-A
Country	US
Kind code	A1
Filing date	Mar 15, 2024
Priority date	Apr 17, 2018
Publication date	Aug 1, 2024
Grant date	—

Abstract

A system including a pumping cassette having a first side including number of valve wells and second side having a fluid bus. Each side may be covered by a flexible membrane. A control surface having a number of valve well control stations actuatable with respect to the flexible membrane covering the first side of the cassette to open and close the valve wells when the cassette is mated against the control surface may be included. A pressure distribution assembly having a positive and negative pressure source and a number of pneumatic valves may be included. A controller configured to selectively actuate the number of pneumatic valves to apply pressure against the valve well control stations in a valve pumping sequence until a volume displaced through the fluid bus of the pumping cassette from a source to a destination is within a range of a target volume may be included.

First claim

1 . A system for determining a characteristic correlated to a heightwise location of a component of interest relative to a pumping chamber of a fluid handling set, the system comprising:
a pumping cassette including the pumping chamber and having at least a first fluid valve, and a second a fluid valve leading to a port connected to a fluid line coupled to the component of interest; a pressure distribution module having a control surface against which the pumping cassette is disposed and including at least one sensor configured to output sensor data indicative of the pressure of the pumping chamber; and a controller configured to command the pressure distribution module to establish a path from the port to the pumping chamber, receive sensor data, and detect a feature profile in the sensor data, the controller configured to predict the characteristic of the component of interest based on the feature profile and additional temporal data associated with the feature profile.

2 - 6 . (canceled)

7 . The system of claim 1 , wherein the controller is configured to predict the characteristic using a behavior model.

8 . The system of claim 7 , wherein the behavior model is based off an ideal second order undampened system.

9 . The system of claim 1 , wherein the feature profile includes one or more pressure peak.

10 . The system of claim 1 , wherein the feature profile includes a first pressure peak and a second pressure peak lower in magnitude than the first peak.

11 . The system of claim 1 , wherein the controller is configured to set an adjusted pumping pressure value based on the predicted characteristic.

12 . The system of claim 1 , wherein while the controller is detecting the feature profile, the controller is also configured to orchestrate pumping of fluid through the pumping cassette via actuation of one or more pneumatic valves in the pressure distribution module associated with a second pump chamber in the pumping cassette.

13 . A system for determining a value dependent upon a heightwise location of a component of interest relative to a pumping chamber of a fluid handling set, the system comprising:
a pumping cassette including the pumping chamber, and a plurality of valves, at least one of the valves disposed intermediate the pumping chamber and the component of interest; a pressure distribution module having a control surface against which the pumping cassette is retained, the pressure distribution module including at least one sensor configured to output sensor data indicative of the pressure of the pumping chamber; and a controller configured to command the pressure distribution module to establish a path from the component of interest to the pumping chamber, receive sensor data, and detect a feature profile in the sensor data, the controller configured to predict the value dependent upon the heightwise location based on the feature profile.

14 . The system of claim 13 , wherein the feature profile includes one or more pressure peak.

15 . The system of claim 13 , wherein the feature profile includes a first pressure peak and a second pressure peak lower in magnitude than the first peak.

16 . The system of claim 13 , wherein the controller is configured to set an adjusted pumping pressure value based on the value dependent upon the heightwise location.

17 . A system for detecting a heightwise location of a component of interest comprising:
a pumping cassette including a pumping chamber, and a set of fluid valves, a first fluid valve of the fluid valves being intermediate the pumping chamber and the component of interest; a pressure distribution module having a control surface for receipt of the pumping cassette and including at least one sensor configured to output sensor data indicative of the pressure of the pumping chamber; and a controller configured to command the pressure distribution module to establish a path from the component of interest to the pumping chamber, receive sensor data, and detect a feature profile in the sensor data before the sensor data indicates the pressure in the pumping chamber is stable, the controller configured to determine, based on the feature profile, a heightwise location value for the component of interest from a list consisting of: a value dependent upon the heightwise location of the component of interest, and a headheight valve of the component of interest.

18 . The system of claim 17 , wherein the feature profile includes one or more pressure peak.

19 . The system of claim 17 , wherein the feature profile includes a first pressure peak and a second pressure peak lower in magnitude than the first peak.

20 . The system of claim 17 , wherein the controller is configured to set an adjusted pumping pressure value based on the heightwise location value.

21 . The system of claim 17 , wherein the controller is further configured to actuate one or more pneumatic valve of the pressure distribution module to apply pressure to the control surface and consequentially place the pumping chamber in an intermediary state between a fully filled and fully delivered state before establishing the path from the component of interest to the pumping chamber.

22 . The system of claim 17 , wherein the intermediate state is a state that allows for the detection of a maximum positive and maximum negative head height of about the same absolute value.

23 . The system of claim 17 , wherein the controller is further configured to actuate one or more pneumatic valve of the pressure distribution module to apply pressure to the control surface and consequentially place the pumping chamber in a negative head height detection biased state before establishing the path from the component of interest to the pumping chamber.

24 . The system of claim 17 , wherein the controller is further configured to actuate one or more pneumatic valve of the pressure distribution module to apply pressure to the control surface and consequentially place the pumping chamber in a positive head height detection biased state before establishing the path from the component of interest to the pumping chamber.

25 . The system of claim 17 , wherein the controller is configured to compare the heightwise location value to an expected heightwise location range and generate an error signal when the heightwise location value is outside of the expected range.

Assignees

• Deka Products Lp

Inventors

• Karol Daniel S

Classifications

• A61M2205/122

  using evacuated interfaces to enhance contact · CPC title

• A61M2205/3331

  Pressure; Flow · CPC title

• A61M2205/121

  interface between cassette and base · CPC title

• A61M2205/12

  with interchangeable cassettes forming partially or totally the fluid circuit · CPC title

• A61M1/166

  Heating (for sterilisation A61M1/1686) · CPC title