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US 8,539,953 B2Granted
Combination anesthesia and scavenger surgical mask
OwnerJohn E. Moenning, Jr.inventor
Life of this patent
Estimating the term…
Abstract
A surgical mask for administering and/or scavenging medical gases includes a nasal mask and an oral mask that envelops the nasal mask. The nasal mask is secured to the oral mask and may be removable from it.
Claims22
A surgical mask assembly for administering and scavenging medical gases, comprising:
- an outer shell having a first gas port configured to be coupled to a negative pressure source such that gas is exhausted from the outer shell to the negative pressure source through the first gas port, the outer shell defining a chamber with a rear-facing opening defined by a rim, the rim having an inner edge and an outer edge, and
- an inner shell having a second gas port that includes (i) a distal end configured to be coupled to a positive pressure source, and (ii) a proximal end that opens into the chamber of the inner shell such that gas from the positive pressure source is advanced through second gas port and out of the chamber of the inner shell to exit the inner shell, the inner shell defining a chamber with a rear-facing opening defined by a rim, the rim having an inner edge and an outer edge,
- wherein a superior-most point of the inner edge of the rim of the inner shell is positioned inferiorly and anteriorly relative to a superior-most point of the inner edge of the rim of the outer shell.
A surgical mask assembly for administering and scavenging medical gases, comprising:
- an oral mask configured to envelop a patient's nose and mouth when the surgical mask assembly is positioned on the face of the patient, the oral mask having (i) a shell which defines a chamber with a rear-facing opening defined by a rim, the rim having an inner edge and an outer edge, and (ii) a first gas port configured to be coupled to a negative pressure source such that gas is exhausted from the outer shell to the negative pressure source through the first gas port, and
- a nasal mask configured to envelop the patient's nose when the surgical mask assembly is positioned on the face of the patient, the nasal mask having (i) a shell which defines a chamber with a rear-facing opening defined by a rim, the rim having an inner edge and an outer edge, and (ii) a second gas port that includes (i) a distal end configured to be coupled to a positive pressure source, and (ii) a proximal end that opens into the chamber of the oral mask such that gas from the positive pressure source is advanced through second gas port and out of the chamber of the nasal mask to exit the nasal mask,
- wherein a superior-most point of the inner edge of the rim of the shell of the nasal mask is positioned inferiorly and anteriorly relative to a superior-most point of the inner edge of the rim of the shell of the oral mask.
A surgical mask assembly for administering and scavenging medical gases, comprising:
- an outer shell having a first gas port configured to be coupled to a negative pressure source such that gas is exhausted from the outer shell to the negative pressure source through the first gas port, the outer shell defining a chamber with a rear-facing opening defined by a rim, the rear-facing opening defining an imaginary bounded plane, and
- an inner shell having a second gas port that includes (i) a distal end configured to be coupled to a positive pressure source, and (ii) a proximal end that opens into the chamber of the inner shell such that gas from the positive pressure source is advanced through second gas port and out of the chamber of the inner shell to exit the inner shell, the inner shell defining a chamber with a rear-facing opening defined by a rim, the rear-facing opening defining an imaginary bounded plane,
- wherein the imaginary bounded plane defined by the rear-facing opening of the inner shell is spaced apart from, and positioned anteriorly relative to, the imaginary bounded plane defined by the rear-facing opening of the outer shell.
A surgical mask assembly for administering and scavenging medical gases, comprising:
- an oral mask configured to envelop a patient's nose and mouth when the surgical mask assembly is positioned on the face of the patient, the oral mask having (i) a shell which defines a chamber with a rear-facing opening defined by a rim, the rear-facing opening defining an imaginary bounded plane, and (ii) a first gas port configured to be coupled to a negative pressure source such that gas is exhausted from the outer shell to the negative pressure source through the first gas port, and
- a nasal mask configured to envelop the patient's nose when the surgical mask assembly is positioned on the face of the patient, the nasal mask having (i) a shell which defines a chamber with a rear-facing opening defined by a rim, the rear-facing opening defining an imaginary bounded plane, and (ii) a second gas port that includes (i) a distal end configured to be coupled to a positive pressure source, and (ii) a proximal end that opens into the chamber of the oral mask such that gas from the positive pressure source is advanced through second gas port and out of the chamber of the nasal mask to exit the nasal mask,
- wherein the imaginary bounded plane defined by the rear-facing opening of the shell of the nasal mask is spaced apart from, and positioned anteriorly relative to, the imaginary bounded plane defined by the rear-facing opening of the shell of the oral mask.
Dependencies are inferred from the claim text.