Air removal mechanism and introducer sheath
AssigneeTerumo Kabushiki Kaisha
InventorsTakayuki MORI, Kinya HARADA, Wataru KARINO, Katsuhiko SHIMIZU, Youichirou KUWANO
Life of this patent
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Abstract
An air removal mechanism includes a body having a hollow portion capable of storing a liquid. In a state where the body is mounted on an introducer sheath, a medical device to be inserted into the introducer sheath is insertable via the hollow portion. The body has an injection path which communicates with the hollow portion and on which an outlet is open toward a valve body.
Claims20
An air removal mechanism configured to be attachable to and detachable from a proximal portion of an introducer sheath having a valve body disposed inside the proximal portion of the sheath, the air removal mechanism comprising:
- a body mountable on the proximal portion of the introducer sheath, the body including a hollow portion configured to store a liquid and an open proximal end that communicates with the hollow portion;
- the open proximal end of the body being configured to receive a medical device when the body is mounted on the proximal portion of the introducer sheath so that the medical device is insertable into the introducer sheath via the hollow portion;
- and
- the body including an injection path communicating with the hollow portion and terminating at an outlet which faces toward the valve body.
An introducer having a valve body disposed inside a sheath proximal portion, comprising:
- an introducer sheath that possesses a proximal portion and a valve body disposed inside the proximal portion of the introducer sheath;
- an air removal mechanism mounted at the proximal portion of the introducer sheath;
- the air removal mechanism including a body that includes a hollow portion configured to store a liquid;
- a medical device insertable into the introducer sheath via the hollow portion;
- and
- the body including an injection path communicating with the hollow portion and terminating at an outlet which is open toward the valve body.
A method for inserting a medical device into a blood vessel in a living body without also introducing air into the blood vessel, the method comprising:
- inserting an introducer sheath into the blood vessel, the introducer sheath possessing a lumen extending between proximal and distal ends of the introducer sheath, the introducer sheath possessing a proximal portion at which is located a valve body that closes the lumen;
- connecting an air removal mechanism to the proximal portion of the introducer sheath, the air removal mechanism comprising a body in which is located a hollow portion;
- supplying liquid to the hollow portion;
- and
- inserting the medical device through the hollow portion in which the liquid is stored, through the valve body and into the blood vessel to prevent air from being introduced into the introducer sheath.
Dependencies are inferred from the claim text.