| 摘要 |
A medical instrument configured to cover at least a mouth section of a medical container that includes a container body with the mouth section at a distal end and a sealing member that seals the mouth section, includes: a cap comprising a cylindrical body; an adapter; and a proximal-end side structure body. The medical device is configured such that, when screw-engagement between a second cap-side screw-engaged portion and a proximal-end side screw-engaged portion is released by rotating the cap around a center axis, the adapter moves in the proximal-end direction while being prevented from rotating by a guide portion, thereby allowing an adapter-side screw-engaged portion to be detached from a first cap-side screw-engaged portion, and further allowing a hollow needle to penetrate the sealing member so that an inside of the container body communicates with an outside via the hollow needle. |
| 主权项 |
1. A medical instrument configured to cover at least a mouth section of a medical container that includes a container body with the mouth section at a distal end and a sealing member that seals the mouth section, the medical instrument comprising:
a cap comprising a cylindrical body that includes:
a first cap-side screw-engaged portion that includes a first screw portion formed in a spiral shape around a center axis of the cylindrical body on an inner peripheral side of the cylindrical body, anda second cap-side screw-engaged portion that includes a second screw portion formed in a spiral shape around the center axis of the cylindrical body proximal of the first cap-side screw-engaged portion on an outer peripheral side of the cylindrical body or on the inner peripheral side of the cylindrical body; an adapter comprising:
an adapter-side screw-engaged portion, anda hollow needle configured to penetrate the sealing member,the adapter-side screw-engaged portion being movable in a proximal-end direction inside the cap and configured to be screw-engaged with the first cap-side screw-engaged portion; and a proximal-end side structure body comprising:
a proximal-end side screw-engaged portion configured to be screw-engaged with the second cap-side screw-engaged portion,a mounting section configured to be mounted on the container body, anda guide portion configured to guide the adapter along a moving direction and to restrict the adapter from rotating together with the cap when the adapter moves in the proximal-end direction, wherein the medical device is configured such that, when screw-engagement between the second cap-side screw-engaged portion and the proximal-end side screw-engaged portion is released by rotating the cap around the center axis, the adapter moves in the proximal-end direction while being prevented from rotating by the guide portion, thereby allowing the adapter-side screw-engaged portion to be detached from the first cap-side screw-engaged portion, and further allowing the hollow needle to penetrate the sealing member so that an inside of the container body communicates with an outside via the hollow needle. |
