MEDICAL TREATMENT SYSTEM AND METHODS USING A PLURALITY OF FLUID LINES
First Claim
1. A tubing state detector for detecting the presence or absence of a tubing segment, comprising:
- a first light emitter having a first optical axis directed toward a space in which a tubing segment is to be positioned;
a second light emitter having a second optical axis directed toward the space, the second light emitter being adjacent the first light emitter; and
an optical sensor positioned on a side of the space opposite the first and second light emitters and arranged to receive light emitted by the first and second light emitters to determine a presence or absence of a tubing segment in the space.
4 Assignments
0 Petitions
Accused Products
Abstract
A medical treatment system, such as peritoneal dialysis system, may include control and other features to enhance patient comfort and ease of use. For example, a peritoneal dialysis system may include patient line state detector for detecting whether a patient line is primed before it is to be connected to the patient. The patient line state detector can also the ability to detect whether a patient line has been properly mounted for priming. Both patient line presence/absence and fill state can be determined using an optical system, e.g., one that employs a single optical sensor.
130 Citations
71 Claims
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1. A tubing state detector for detecting the presence or absence of a tubing segment, comprising:
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a first light emitter having a first optical axis directed toward a space in which a tubing segment is to be positioned; a second light emitter having a second optical axis directed toward the space, the second light emitter being adjacent the first light emitter; and an optical sensor positioned on a side of the space opposite the first and second light emitters and arranged to receive light emitted by the first and second light emitters to determine a presence or absence of a tubing segment in the space. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17-19. -19. (canceled)
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20. A tubing state detector for detecting whether liquid is contained in a tubing segment, comprising:
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a fill state light emitter having an optical axis that is arranged to pass through a space in which a tubing segment is to be positioned, the space being arranged to receive a tubing segment having a cylindrical outer surface and to hold the tubing segment without substantially deforming the tubing segment; and an optical sensor positioned on a side of the space opposite the fill state light emitter and arranged to receive light emitted by the fill state light emitter to determine a presence or absence of liquid in the tubing segment, the optical sensor having a sensor optical axis that is arranged at an oblique angle to the optical axis of the fill state light emitter.
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21-39. -39. (canceled)
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40. A peritoneal dialysis system, comprising:
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at least one pump arranged to pump dialysate for delivery to a peritoneal cavity of a patient; a patient line fluidly coupled to the at least one pump such that dialysate delivered from the pump is directed to the patient line, the patient line having a distal end arranged for connection to a patient; and a patient line state detector arranged to be associated with the patient line and to detect both a presence of the patient line and a priming condition of the patient line.
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41-59. -59. (canceled)
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60. A method for detecting a presence of a tubing segment, comprising:
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emitting first light along a first optical axis toward a space in which a tubing segment is to be optionally positioned; emitting second light along a second optical axis toward the space, the first and second light being emitted from a first side of the space; sensing at least portions of the first and second light on a second side of the space opposite the first side; and determining a presence or absence of a tubing segment in the space based on the sensed portions of the first and second light.
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61-69. -69. (canceled)
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70. A method for detecting a presence of liquid in a tubing segment, comprising:
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emitting light along an optical axis toward a space in which a tubing segment is positioned, the tubing segment having a cylindrical outer surface; sensing light along a sensor optical axis that extends into the space, wherein the sensor optical axis is arranged at an oblique angle relative to the optical axis; and determining a presence or absence of liquid in the tubing segment in the space based on a sensed light level sensed along the sensor optical axis.
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71-76. -76. (canceled)
Specification