Implantable access device for accessing the vascular system of a human or animal body, particularly subcutaneously implantable access port
Implantable access device for accessing the vascular system of a human or animal body, particularly subcutaneously implantable access port, comprising: a port body with at least one outlet opening connected or connectable to a catheter for accessing the vascular system of the human or animal body, a needle entrance with at least one inlet opening for receiving a needle, wherein the needle entrance is connected to the port body and movable relative to the port body between a first, unactuated operating condition and a second, actuated operating condition, and locking means for locking the needle entrance in the first, unactuated operating condition and in the second, actuated operating condition, wherein the locking means are activated by inserting the needle into the needle entrance and applying a predetermined movement to needle entrance via the inserted needle and/or by applying a predetermined movement to the needle entrance via the inserted needle and removing the needle from the needle entrance.
1 . An implantable access device to access a vascular system of a human or animal body, comprising:
a port body with at least one outlet opening connected or connectable to a catheter to accessing the vascular system of the human or animal body;
a needle entrance formed entirely by a single structure with at least one inlet opening to receive a needle, wherein the needle entrance is connected to the port body and movable relative to the port body between a first, unactuated operating condition and a second, actuated operating condition, and wherein at least a portion of the needle entrance is external to the port body; and
at least one bistable locking mechanism configured to lock the needle entrance to the port body in the first, unactuated operating condition and configured to further lock the needle entrance to the port body in the second, actuated operating condition,
wherein the at least one bistable locking mechanism is activated by a predetermined movement of the needle entrance relative to the port body and the predetermined movement is achieved by at least one of
(1) inserting the needle into the needle entrance and moving the needle entrance via the inserted needle, and
(2) moving the needle entrance via an inserted needle and removing the inserted needle from the needle entrance, and
wherein the predetermined movement applied to the needle entrance comprises a pivoting movement and a translational movement.
2 . The implantable access device according to claim 1 , wherein the predetermined movement applied to the needle entrance at least partially differs from a movement of the needle for inserting the needle into the needle entrance.
3 . The implantable access device according to claim 1 , wherein an insertion angle of the needle entrance, in which the needle is inserted into the needle entrance, is between 15° and 40°.
4 . The implantable access device according to claim 3 , wherein the insertion angle of the needle entrance is between 25° and 30°.
5 . The implantable access device according to claim 1 , wherein the needle entrance comprises a funnel to guide the needle into the needle entrance.
6 . The implantable access device according to claim 1 , wherein the at least one bistable locking mechanism comprises at least one of: (1) a cam on the needle entrance and a corresponding recess to guide the cam on the port body, and (2) a cam on the port body and a corresponding recess to guide the cam on the needle entrance.
7 . The implantable access device according to claim 6 , wherein the cam is shaped rectangular or triangular.
8 . The implantable access device according to claim 7 , wherein the cam has rounded corners.
9 . The implantable access device according to claim 6 , wherein the recess has at least one pit to receive the cam in at least one of the first, unactuated operating condition and the second, actuated operating condition.
10 . The implantable access device according to claim 9 , wherein the recess is heart shaped.
11 . The implantable access device according to claim 6 , wherein the recess has one pit to receive the cam in the first, unactuated operating condition and another pit to receive the cam in the second, actuated operating condition.
12 . The implantable access device according to claim 11 , wherein the recess is heart shaped.
13 . The implantable access device according to claim 1 , wherein the at least one bistable locking mechanism comprises a push-push locking mechanism.
14 . The implantable access device according to claim 1 , wherein the at least one bistable locking mechanism comprises a snap fit connection.
15 . The implantable access device according to claim 14 , wherein the snap fit connection comprises a snap on the needle entrance and at least one recess or protrusion on the port body to receive or engage with the snap, to lock the needle entrance in the first, unactuated operating condition and in the second, actuated operating condition.
16 . The implantable access device according to claim 1 , wherein the at least one locking bistable mechanism comprises a spring to lock the at least one bistable locking mechanism in the first, unactuated operating condition and in the second, actuated operating condition.
17 . The implantable access device according to claim 16 , wherein the spring is connected to or integrally formed with a valve mechanism of the implantable access device.
18 . The implantable access device according to claim 1 , wherein the at least one bistable locking mechanism creates at least one of an audio feedback and a haptic feedback when being locked in at least one of the first, unactuated operating condition and the second, actuated operating condition.
19 . The implantable access device according to claim 18 , wherein the audio feedback comprises a sound and the haptic feedback comprises a vibration.