Insertable fluid warming cassette unit
First Claim
1. A fluid warming cassette comprising:
- a first polymeric film and a second polymeric film sealed together in predetermined locations to form a tortuous fluid path within a fluid path section of the cassette, the fluid path section is defined by a proximal end of the cassette, a tongue section which extends toward a distal end of the cassette, a first guide rail section and a second guide rail section of the cassette;
an inlet tube and an outlet tube for fluid to enter and exit the tortuous fluid path, the inlet and the outlet are positioned at the proximal end;
a first guide rail extending from the proximal end to a distal end of the cassette and positioned in the first guide rail section;
a second guide rail extending from the proximal end to the distal end and positioned in the second guide rail section;
the tongue section extends beyond the fluid path section toward the distal end, the tongue section assists a user insert the cassette into a warmer unit'"'"'s aperture.
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Accused Products
Abstract
The present invention is directed to a fluid warming cassette. The cassette has two polymeric films and at least two guide rails. A difference between this fluid warming cassette and those of the prior art is that this fluid warming cassette has a tongue section thereon. This tongue section assists the user insert the cassette into a warming unit'"'"'s aperture. That aperture is relatively narrow because the heating elements of the warming unit must be sufficiently close to the cassette to alter the temperature of the fluid in the cassette to a desired temperature. In addition, the user can confirm if the cassette is properly inserted into the warming device'"'"'s aperture by seeing that the tongue portion is sticking out of the other end of the warming device'"'"'s aperture.
33 Citations
42 Claims
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1. A fluid warming cassette comprising:
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a first polymeric film and a second polymeric film sealed together in predetermined locations to form a tortuous fluid path within a fluid path section of the cassette, the fluid path section is defined by a proximal end of the cassette, a tongue section which extends toward a distal end of the cassette, a first guide rail section and a second guide rail section of the cassette;
an inlet tube and an outlet tube for fluid to enter and exit the tortuous fluid path, the inlet and the outlet are positioned at the proximal end;
a first guide rail extending from the proximal end to a distal end of the cassette and positioned in the first guide rail section;
a second guide rail extending from the proximal end to the distal end and positioned in the second guide rail section;
the tongue section extends beyond the fluid path section toward the distal end, the tongue section assists a user insert the cassette into a warmer unit'"'"'s aperture. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 42)
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21. A method of inserting a fluid warming cassette into an aperture of a warming unit comprising:
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inserting a cassette having a first polymeric film and a second polymeric film sealed together in predetermined locations to form a tortuous fluid path within a fluid path section of the cassette, the fluid path section is defined by a proximal end of the cassette, a tongue section which extends toward a distal end of the cassette, a first guide rail section and a second guide rail section of the cassette;
an inlet tube and an outlet tube for fluid to enter and exit the tortuous fluid path, the inlet and the outlet are positioned at the proximal end;
a first guide rail extending from the proximal end to a distal end of the cassette and positioned in the first guide rail section;
a second guide rail extending from the proximal end to the distal end and positioned in the second guide rail section;
the tongue section extends beyond the fluid path section toward the distal end, into a first side of a warmer unit'"'"'s aperture; and
confirming the cassette is properly inserted in the warmer unit by confirming the tongue section extends through a second side of a warmer unit'"'"'s aperture. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41)
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Specification