CPC A61M 5/14216 (2013.01) [A61M 5/162 (2013.01); A61M 5/172 (2013.01); A61M 2005/1583 (2013.01); A61M 2005/1585 (2013.01)] | 20 Claims |
1. An apparatus for delivering a therapeutic substance to a subject, the apparatus comprising:
a therapeutic substance delivery device:
(a) configured to engage with a therapeutic substance reservoir, and
(b) comprising a pump configured to draw the therapeutic substance from the reservoir into a pump chamber disposed within the therapeutic substance delivery device without changing internal dimensions of the reservoir, a volume of the therapeutic substance within the pump chamber varying in response to changes in internal dimensions of the pump chamber;
an orientation sensor coupled to the therapeutic substance delivery device and configured to generate an output indicative of an orientation of the therapeutic substance delivery device with respect to gravity; and
control circuitry configured to drive the pump to:
(a) calculate a volume of the therapeutic substance disposed within the reservoir,
(b) drive the pump to draw the therapeutic substance into the pump chamber in response to (i) the calculated volume of the therapeutic substance disposed within the reservoir, in combination with (ii) an output from the orientation sensor that the therapeutic substance delivery device is in an orientation that allows the therapeutic substance to be drawn from the reservoir, and
(c) drive the pump to deliver the therapeutic substance from the pump chamber to the subject.
|
12. A method for delivering a therapeutic substance to a subject, the method comprising:
using a therapeutic substance delivery device:
drawing the therapeutic substance from a therapeutic substance reservoir into a pump chamber of the therapeutic delivery device, and
delivering the therapeutic substance from the pump chamber to the subject,
the drawing of the therapeutic substance being:
(i) without changing internal dimensions of the reservoir, and
(ii) substantially in response to (a) a volume of therapeutic substance in the reservoir, in combination with (b) an orientation of the therapeutic substance delivery device.
|