Fenwal Inc.

Lake Zurich, IL, United States

Fenwal Inc.

Lake Zurich, IL, United States
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Patent
Fenwal Inc. | Date: 2017-02-01

Filter assemblies are processing biological fluid, such as blood or a blood component containing leukocytes. The filter assemblies include a flexible housing with first and second walls. A filtration medium and a support member are at least partially positioned between the walls of the housing, with a seal joining the walls of the housing, the filtration medium, and the support member. The filter assemblies may further include a pre-filter and/or a post-filter positioned between the walls of the housing. If provided, the pre- and post-filter may be positioned on opposite walls of the filtration medium, with the post-filter being a mesh positioned between the filtration medium and one of the walls of the housing or within an opening defined by the support member. A seal of the filter assembly may pass through the filtration medium, with the filtration medium being substantially omitted in a section of the seal.


A system and method are provided for controlling fouling and complement protein activation during separation of plasma from whole blood using a spinning membrane separator. The separator includes a pair of relatively rotating surfaces spaced apart to define a gap therebetween, with at least one of the surfaces comprising a membrane that allows plasma to pass therethrough but substantially prevents the passage of red cells. In accordance with the method, the membrane material and membrane fabrication technique are selected so as that the resulting membrane both resists fouling and complement protein activation. In a specific embodiment, the membrane is has a smooth surface and substantially linear pores. The pores have a nominal diameter of less than 2 microns (so as to exclude platelets) and preferably a diameter of from 0.6 microns to 0.8 microns, as may be obtained by use of track-etching. In addition, the membrane material preferably is polycarbonate, as it has been determined that polycarbonate does not activate complement proteins.


A fluid separation system is provided for separating a plasma-containing fluid into separated plasma and a concentrated fluid. The system cooperates with a fluid flow circuit including a fluid separation chamber and a plasma outlet line associated therewith for removing separated plasma from the fluid separation chamber. The system includes an optical sensor assembly that receives a portion of the plasma outlet line when the fluid flow circuit has been associated with the fluid separation system. To ensure proper installation of the plasma outlet line, the optical sensor assembly compares light received by its light detector to a baseline value, which is indicative of the amount of light received by the light detector before the plasma outlet line has been installed. The amount of received light being equal to or less than a selected percentage of the baseline value indicates that the plasma outlet line has been properly installed.


Systems and methods are provided for separating blood into two or more separated blood components. The system includes a blood separation chamber with a single stage having five ports connected thereto. The five ports include a blood inlet port, a red blood cell outlet port, a platelet-rich plasma outlet port, a platelet-poor plasma outlet port, and a buffy coat outlet port. In the single stage, blood may be separated into a variety of components, such as red blood cells and platelet-rich plasma or red blood cells, platelet-poor plasma, and buffy coat. Depending on the components into which the blood is to be separated, flow out of one or more of the outlet ports may be prevented.


Patent
Fenwal Inc. | Date: 2017-03-01

An optical monitoring system is provided for use with a blood processing system. The system includes a light source configured to illuminate a disposable flow circuit received in a centrifuge and a light detector configured to receive an image of the disposable flow circuit. A controller combines two or more of the images received by the light detector to generate a two-dimensional output. The output is used to control the separation of blood within the disposable flow circuit. The monitoring system may also be used to verify that the disposable flow circuit is suitable for use with the centrifuge or that the disposable flow circuit is properly aligned within the centrifuge. The monitoring system may be positioned outside of the centrifuge bucket which receives the centrifuge.


A system is provided for processing blood from a blood source. The system cooperates with a disposable fluid flow circuit including a tubing line that is associated with a clamp of the system. The system also includes a sensor and a controller, which cooperate to determine whether the fluid flow circuit and/or the system itself is defective and/or if the fluid flow circuit has been installed onto the system improperly. If such an error or defect exists, then the controller determines whether a selected system state exists. The controller causes a change in the appearance of the display of the system, which includes displaying an interactive icon if the selected system state exists. The icon, when manipulated, causes the clamp to move from the closed condition to an open condition.


A device for connecting first and second medical fluid flow systems includes a linear movement carriage system that is positioned within a housing. The carriage system includes first (18a) and second connector holders (18b) configured to hold first (22a) and second connectors (22b) of the first and second medical fluid flow systems, respectively. A coupler holder (28) is configured to hold a coupler (32) and is positioned substantially between the first and second connector holders. The first (18a) and second connector holders (18b) and the coupler holder (28) are relatively moveable between a separated configuration, where the first (22a) and second connectors (22b) and the coupler (32) are located in relatively spaced apart positions, and a joined configuration, where the first (22a) and second connectors (22b) engage the coupler (32). An ultraviolet light source (62) is positioned in the housing so as to irradiate the first (22a) and second connectors (22b) and the coupler (32). A drive system transitions the first (18a) and second connector holders (18b) and the coupler holder (28) between the separated and the joined configurations.


Patent
Fenwal Inc. | Date: 2017-09-20

A computer-implemented medical device management method for distributing instructions to a plurality of medical devices, said method comprising providing via a drug library a first data set to be distributed to a parent organization having at least one child location, wherein the at least one child location collectively includes at least one target medical device identified by the first data set. The method also comprises receiving a first user input via a user interface to distribute the first data set to the parent organization. The method also comprises distributing the first data set to the at least one target medical device located in the at least one child location within the parent organization, and facilitating operation of the at least one target medical device according to the first data set.


System, apparatus and method for opening a heat-bonded connection (32) formed between two hollow, flexible thermoplastic conduits (20, 22). A pressure difference is created by a pump (46) between the inside of at least one of the conduits and the ambient atmosphere sufficient to cause expansion of a wall of the tubing conduit in the vicinity of a frangible portion (32) at least partially blocking the connection to disrupt the frangible portion and reduce the blocking. The integrity of the heat-bonded connection is tested by sensing an internal pressure in an occlusion between the pump (46) and an occluder (40).


A cell processing system includes a processor to receive a biological fluid to be processed, a controller coupled to the processor, the controller configured to operate the processor according to at least one modifiable process parameter, and at least one input coupled to the controller, the at least one input configured to receive an identifier and at least one process parameter control associated with the at least one process parameter that limits modification of the at least one process parameter if applied. The controller is configured to determine if the identifier is associated with an administrator authorization and to apply the at least one processor parameter control to the at least one process parameter if the identifier is associated with an administrator authorization.

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