Medical instrument, nasal adapter, and bite block
A medical instrument is adapted to be attached to a subject. A nasal adapter includes cannulas adapted to be disposed so as to face nostrils of the subject when the medical instrument is attached to the subject. A bite block includes a hollow member-adapted to be disposed in an oral cavity of the subject when the medical instrument is attached to the subject. A flexible joint connects the nasal adapter and the bite block.
1 . A medical instrument adapted to be attached to a subject, comprising:
a nasal adapter including:
a pair of cannulas adapted to be disposed so as to face nostrils of the subject when the medical instrument is attached to the subject, and
a first housing defining a first airway communicating with the cannulas;
a bite block including:
a hollow member adapted to be disposed in an oral cavity of the subject when the medical instrument is attached to the subject, and
a second housing defining a second airway communicating with the hollow member; and
a joint connecting the nasal adapter and the bite block and forming a third airway communicating the first airway and the second airway,
wherein the joint includes:
a first connecting portion connected to the first housing,
a second connecting portion connected to the second housing, and
an intermediate portion arranged between the first connecting portion and the second connecting portion, and
wherein a flexibility of the intermediate portion is greater than a flexibility of each of the first connecting portion and the second connecting portion; and wherein the joint has an opened side that faces a face of the subject when the medical instrument is attached to the subject.
2 . The medical instrument according to claim 1 , wherein the nasal adapter includes a support configured to support a sensor for detecting gas in the first airway.
3 . The medical instrument according to claim 1 , wherein one of the first connecting portion and the second connecting portion includes a portion having a larger dimension than the other of the first connecting portion and the second connecting portion in a direction corresponding to at least one of a left-right direction and a front-rear direction of a head of the subject when the medical instrument is attached to the subject.
4 . The medical instrument according to claim 3 , wherein the first connecting portion includes the portion having the larger dimension than the second connecting portion in the direction corresponding to at least one of the left-right direction and the front-rear direction of the head of the subject when the medical instrument is attached to the subject.
5 . The medical instrument according to claim 1 , wherein the intermediate portion includes a portion where a width of the third airway is narrowed in a direction corresponding to at least one of a left-right direction and a front-rear direction of a head of the subject when the medical instrument is attached to the subject.
6 . The medical instrument according to claim 5 , wherein the portion where the width of the third airway is narrowed has a bellows shape with a plurality of bent portions.
7 . The medical instrument according to claim 1 , wherein the joint is detachable with respect to at least one of the nasal adapter and the bite block.
8 . The medical instrument according to claim 1 , wherein a relative position between the nasal adapter and the bite block is variable in at least one of a plane including an up-down direction and a left-right direction of a head of the subject and a plane including a front-rear direction and the left-right direction of the head of the subject when the medical instrument is attached to the subject.