Fluid temperature control device for an extracorporeal blood treatment apparatus and extracorporeal blood treatment apparatus
Inventors
Assignees
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Publication Number
US-11951244-B2
Publication Date
2024-04-09
Expiration Date
Abstract
A fluid temperature control device for an extracorporeal blood treatment apparatus, comprises: a casing (26) delimiting a heating/cooling seat (20) configured to accommodate a fluid warming bag (17) connected or connectable to an extracorporeal blood treatment apparatus (1); heating elements (29, 30) operatively active in the heating seat (20) to heat the fluid warming bag (17); at least a presence detector (32, 33) operatively active in the heating seat (20) to detect the presence of the fluid warming bag (17). The presence detector (32, 33) comprises an electromagnetic transmitter (34) and an electromagnetic receiver (35). The electromagnetic receiver (35) is positioned with respect to the electromagnetic transmitter (34) either to receive an electromagnetic radiation emitted by the electromagnetic transmitter (34) and reflected by the fluid warming bag (17) only when the fluid warming bag (17) is properly accommodated in the heating seat (20) or only when the fluid warming bag (17) is not properly accommodated in the heating seat (20).
Core Innovation
The invention relates to a fluid temperature control device for an extracorporeal blood treatment apparatus. The device includes a casing delimiting a heating/cooling seat configured to accommodate a fluid warming/cooling bag connected or connectable to the extracorporeal blood treatment apparatus, and heating/cooling elements operatively active in the heating/cooling seat to heat/cool the fluid warming/cooling bag. The invention integrates a presence detector configured to detect the presence and the type of the fluid warming/cooling bag when the bag is properly accommodated in the heating/cooling seat.
The presence detector comprises a transmitter and a receiver positioned with respect to one another so that the receiver selectively receives a signal after reflection of the emitted signal. The receiving surface is configured to intercept the signal emitted by the transmitter in the improper accommodation condition and to reflect the signal along a first reflected path that is spaced from the receiver.
The invention ties signal reflection behavior to bag accommodation features such as a tab and a recess on the heating/cooling seat. A tab protruding from a main portion of the fluid warming/cooling bag is positioned between the transmitter and the receiving surface, or covers the receiving surface when the bag is properly accommodated, and the signal is reflected by the tab. An electronic control unit receives detector signals from the presence detector(s), analyzes the received signals, and determines when the fluid warming/cooling bag is properly accommodated and the type of fluid warming/cooling bag accommodated in the heating/cooling seat.
Claims Coverage
The provided set includes three independent claims. Across these claims, the core coverage centers on a casing with a heating/cooling seat and heating/cooling elements, combined with presence detection using transmitter/receiver reflection behavior to determine both proper bag accommodation and bag type.
Fluid temperature control device with reflected signal presence detection and bag type determination
A fluid temperature control device for an extracorporeal blood treatment apparatus with a casing delimiting a heating/cooling seat for a fluid warming/cooling bag, heating/cooling elements active in the heating/cooling seat, first and second presence detectors at the heating/cooling seat each comprising a transmitter emitting a signal and a receiver positioned to selectively receive the signal after reflection, and an electronic control unit connected to the first and second presence detectors to receive, analyze, and determine when the fluid warming/cooling bag is properly accommodated and a type of the fluid warming/cooling bag accommodated in the heating/cooling seat.
Side-by-side two presence detectors for detecting if and which type of fluid warming/cooling bag is accommodated
A fluid temperature control device with a casing delimiting a heating/cooling seat configured to accommodate a fluid warming/cooling bag connected to an extracorporeal blood treatment apparatus, heating/cooling elements active in the heating/cooling seat to heat/cool the bag, and two presence detectors configured to detect if and which type of fluid warming/cooling bag is accommodated, wherein the first presence detector comprises a first transmitter and a first receiver positioned to selectively receive the first signal emitted after the first signal is reflected, the second presence detector comprises a second transmitter and a second receiver positioned to selectively receive the second signal after the second signal is reflected, and the first presence detector and the second presence detector are placed side by side.
Same-side transmitter/receiver reflection interception using receiving surface and tab/recess geometry
A fluid temperature control device for receiving a fluid warming/cooling bag connected to an extracorporeal blood treatment apparatus, with a casing delimiting a heating/cooling seat configured to accommodate a fluid warming/cooling bag comprising a main portion with a fluid path and a tab protruding from the main portion, heating/cooling elements active in the heating/cooling seat to heat/cool the bag, and a presence detector at the heating/cooling seat comprising a transmitter and a receiver positioned on a same side with respect to the heating/cooling seat and on a same side with respect to the fluid warming/cooling bag; a receiving surface configured to intercept the signal emitted by the transmitter when the bag is not properly accommodated and to reflect the signal along a first reflected path such that the signal reflected along the first reflected path is not captured by the receiver; a heating/cooling seat recess configured to accommodate the tab only when the bag is properly accommodated; and when the bag is properly accommodated the bag is positioned between the transmitter and the receiving surface and the tab is positioned between the transmitter and the receiving surface or covers the receiving surface, wherein the signal is reflected by the tab.
Across the independent claims, the inventive concept is a fluid temperature control device that detects both presence and type of a fluid warming/cooling bag using reflected transmitter/receiver signals and an electronic control unit, with proper-vs-improper accommodation distinguished by how the signal reflection is intercepted and/or blocked through receiving surface and tab/recess geometry, including a side-by-side two-detector configuration and same-side transmitter/receiver placement.
Stated Advantages
Selectively determine when the fluid warming/cooling bag is properly accommodated in the heating/cooling seat and a type of the fluid warming/cooling bag accommodated in the heating/cooling seat.
Detect if and which type of fluid warming/cooling bag is accommodated in the heating/cooling seat.
Use a receiving surface and a recess/tab configuration so that improper accommodation leads to reflected signals not captured by the receiver.
Documented Applications
Fluid temperature control for extracorporeal blood treatment apparatus using a fluid warming/cooling bag connected to the extracorporeal blood treatment apparatus.
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