| Peristaltic pump with a removable cassette -> Monitor Keywords |
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Peristaltic pump with a removable cassetteRelated Patent Categories: Pumps, Expansible Chamber Type, Elongated Flexible Chamber Wall Progressively Deformed, Deformation By Rolling Or Sliding Engagement Member, Plural Spaced Engagement Members Or Member Portions, CassettePeristaltic pump with a removable cassette description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20070212240, Peristaltic pump with a removable cassette. Brief Patent Description - Full Patent Description - Patent Application Claims
CROSS-REFERENCE TO RELATED APPLICATIONS [0001] This application is a continuation application of International Application No. PCT/FR2005/001479 filed on Jun. 14, 2005, the entire disclosure of which is incorporated herein by reference, which claims the benefit of French Patent Application No. 04/06767 that was filed Jun. 22, 2004, the entire disclosure of which is incorporated herein by reference. FIELD [0002] The field of the disclosure relates generally to peristaltic pumps. More specifically, the disclosure relates to cassettes that are readily attached and detached from the pump. BACKGROUND [0003] Peristaltic pumps have been known for many years, and are commonly used for medical and research purposes. Peristaltic pumps move a liquid through a tube without any part of the pump ever touching the liquid. As a result, it is possible to pump liquids, such as blood, which are sensitive to external contamination. Typically, a pump comprises rotating rollers that compress a part of the flexible tube as they move, which propels the liquid through the tube. [0004] For example, such a pump is described in document EP 339 857, the entire disclosure of which is incorporated herein by reference. The flexible tube must withstand the compressive force while remaining leak proof. The pump in the aforesaid document includes removable cassettes that each include a tube and a means for securing the cassettes to the pump frame so that the tube is held against the rollers to ensure good contact between tube and rollers. The means described for securing the cassettes include a notch and cam arrangement which requires two hands to operate a release lever to unlock the cassette from the pump. Additionally, a second hand simultaneously holds the cassette to prevent it from jumping off of the frame What is needed is a peristaltic pump cassette which may be easily mounted to and dismounted from a peristaltic pump using a single-hand. SUMMARY [0005] A mechanism for mounting and dismounting a removable cassette from a peristaltic pump is provided. The removable cassette is easily mounted to a pump frame of the peristaltic pump using a single-hand of a user. Additionally, a similar motion both mounts the cassette to the pump frame and dismounts the cassette from the pump frame. [0006] In an exemplary embodiment, a peristaltic pump includes, but is not limited to, a pump frame, a plurality of rollers configured to mount to the pump frame, an actuator operably coupled to move the plurality of rollers, and a cassette. The cassette includes a cassette frame and a cam positioned to compress a tube against the plurality of rollers. The cassette is mountable to the pump frame by applying pressure in a first direction to the cassette frame and is dismountable from the pump frame by applying pressure in the first direction to the cassette frame. [0007] In another exemplary embodiment, a method of using a cassette in a peristaltic pump is provided. A cassette frame of a cassette is positioned for mounting to a pump frame of a peristaltic pump. A hook is engaged in a notch to mount a first end of the cassette frame to the pump frame. A pin slides in a first direction to accept a second end of the cassette frame. The pin slides along a ramp and is held in a seat of the ramp to mount the cassette to the peristaltic pump. [0008] Other principal features and advantages of the invention will become apparent to those skilled in the art upon review of the following drawings, the detailed description, and the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS [0009] Exemplary embodiments of the invention will hereafter be described with reference to the accompanying drawings, wherein like numerals denote like elements. [0010] FIG. 1 is a perspective view of a peristaltic pump head with a cassette in a position to be mounted onto the pump in accordance with an exemplary embodiment, [0011] FIG. 2 is a perspective view of the peristaltic pump head of FIG. 1 with the cassette mounted on the pump in accordance with an exemplary embodiment. [0012] FIG. 3 is a front cross sectional view of the pump head of FIG. 2, and designated by the line along III-III with the cassette in accordance with an exemplary embodiment. [0013] FIG. 4 is a front perspective view of the cassette FIG. 2 in a mounted position. [0014] FIG. 5 is a side perspective view of the cassette as in FIG. 2. [0015] FIG. 6 is a larger scale view of a ramp of the cassette of FIG. 5 in accordance with an exemplary embodiment. [0016] FIGS. 7-11 are partial perspective views showing the steps in mounting the cassette to a pump frame and dismounting the cassette from the pump frame using a pin and a ramp in accordance with an exemplary embodiment. [0017] FIGS. 12 and 13 are lateral views of the pin indicating the longitudinal motion in accordance with an exemplary embodiment. DETAILED DESCRIPTION [0018] While a single style of cassette has been illustrated in the figures, a plurality of cassettes similar in construction to that described are contemplated. For the purposes of this disclosure and unless otherwise specified, "a" or "an" means "one or more" Continue reading about Peristaltic pump with a removable cassette... Full patent description for Peristaltic pump with a removable cassette Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Peristaltic pump with a removable cassette patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. Start now! - Receive info on patent apps like Peristaltic pump with a removable cassette or other areas of interest. ### Previous Patent Application: Vacuum hand pump and vacuum sealable bag valve system and method Next Patent Application: Vibratory pump with adapter and high pressure mechanism Industry Class: Pumps ### FreshPatents.com Support Thank you for viewing the Peristaltic pump with a removable cassette patent info. 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