Vertical assembly of PCB
An electronic injector including a needle insertion assembly configured to move a needle in an insertion direction from a first needle position where the needle is above the surface of a patient's skin to a second needle position where the needle pierces the patient's skin. The injector further includes a member mechanically coupled to the needle and configured to move when the needle. The injector further includes an optical detector having a generally planar detection surface and configured to detect movement of the member based on a change in a transverse projection of the member onto the detection surface and output a signal based on the change in the transverse projection. Additional, a processor is configured to determine the position of the needle based on the output signal, and the transverse projection of the member changes when the needle moves.
1. An electronic injector comprising:
a housing having a base defining a base aperture,
a needle extending along an insertion direction and configured to extend through the base aperture and pierce a patient's skin,
a needle shield defining an aperture, wherein the needle is configured to selectively extend through the aperture, wherein the needle shield is moveable from a first needle shield position where the needle is at least partially covered and the aperture is misaligned with the needle along the insertion direction to a second needle shield position where the needle is exposed and the aperture is aligned with the needle along the insertion direction,
a member mechanically coupled to the needle and configured to move when the needle moves,
a battery,
a printed circuit board having a planar surface defined by the two largest dimensions of the printed circuit board, wherein the planar surface is oriented perpendicular to the base, the planar surface defining a first side and an opposing second side and the printed circuit board being positioned within the housing to separate the battery from the needle, the needle shield and the member, the battery being electrically connected with the first side of the planar surface,
an optical detector mounted to the second side of the planar surface and configured to detect movement of the member and output a signal based on the movement of the member, and
a processor configured to determine the position of the needle based on the output signal.
2. The electronic injector according to claim 1 , wherein the processor is mounted on the printed circuit board.
3. The electronic injector according to claim 1 , wherein the optical detector is configured to output the signal in proportion to a change in a position of the member.
4. The electronic injector according to claim 1 , wherein the member is positioned at an elevation distance away from the optical detector and the elevation distance remains constant during movement of the needle.
5. The electronic injector according to claim 1 , further comprising:
a needle shield member mechanically coupled to the needle shield and configured to move when the needle shield moves;
a needle shield optical detector having a generally planar detection surface and configured to detect movement of the needle shield member based on the movement of the needle shield member and output a signal based on the movement of the needle shield member; and
the processor configured to determine the position of the needle shield based on the signal from the needle shield optical detector.
6. The electronic injector according to claim 1 , wherein the needle shield is configured to rotate about an axis angularly offset from the insertion direction to move from the first needle shield position to the second needle shield position.
7. An electronic injector comprising:
a housing having a base defining a base aperture;
a needle extending along an insertion direction and configured to extend through the base aperture and pierce a patient's skin,
a needle shield defining an aperture, wherein the needle is configured to selectively extend through the aperture, wherein the needle shield is moveable from a first needle shield position where the needle is at least partially covered to a second needle shield position where the needle is exposed,
a needle shield member mechanically coupled to the needle shield and configured to move when the needle shield moves,
a battery,
a printed circuit board having a planar surface defined by the two largest dimensions of the printed circuit board, wherein the planar surface is oriented perpendicular to the base, the planar surface defining a first side and an opposing second side and the printed circuit board being positioned within the housing to separate the battery from the needle, the needle shield and the member, the battery being electrically connected with the first side of the planar surface,
an optical detector mounted to the second side of the planar surface and configured to detect movement of the needle shield member and output a signal based on the movement of the needle shield member, and
a processor configured to determine the position of the needle shield based on the output signal.
8. The electronic injector according to claim 7 , wherein the processor is mounted on the printed circuit board.
9. The electronic injector according to claim 7 , wherein the optical detector is configured to output the signal in proportion to a change in a position of the needle shield member.
10. The electronic injector according to claim 7 , wherein the needle shield member is positioned at an elevation distance away from the optical detector and the elevation distance remains constant during movement of the needle shield.
11. The electronic injector according to claim 7 , wherein the needle shield assembly is configured about an axis angularly offset from the insertion direction to move from the first needle shield position to the second needle shield position.
12. The electronic injector according to claim 7 , wherein the aperture is misaligned with the needle along the insertion direction when the needle shield is in the first needle shield position and the aperture is aligned with the needle along the insertion direction when the needle shield is in the second needle shield position.