Motorized surgical instrument
First Claim
Patent Images
1. A surgical instrument system comprising:
- an end effector comprising a moveable cutting instrument;
an electric motor communicating with the end effector for actuating the cutting instrument;
a motor control circuit for controlling the motor, wherein the motor control circuit comprises;
a power source connected to the motor for electrically powering the motor;
a charge accumulator device; and
a switching circuit connected to the power source and the charge accumulator device, wherein the switching circuit comprises;
a first switch for temporarily connecting the charge accumulator device to the power source not in series with the motor to charge the charge accumulator device; and
a second switch for selectively connecting the charge accumulator device in series with the power source to provide additional power to the motor, wherein, when the first switch is temporarily connecting the charge accumulator device to the power source, the second switch is not selectively connecting the charge accumulator device in series with the power source.
4 Assignments
0 Petitions
Accused Products
Abstract
A surgical cutting and fastening instrument that is motorized. The instrument comprises in one embodiment a charge accumulator device, separate from a battery, that provides additional power to the motor under certain conditions. In addition, the motor may comprise multiple windings.
3311 Citations
20 Claims
-
1. A surgical instrument system comprising:
-
an end effector comprising a moveable cutting instrument; an electric motor communicating with the end effector for actuating the cutting instrument; a motor control circuit for controlling the motor, wherein the motor control circuit comprises; a power source connected to the motor for electrically powering the motor; a charge accumulator device; and a switching circuit connected to the power source and the charge accumulator device, wherein the switching circuit comprises; a first switch for temporarily connecting the charge accumulator device to the power source not in series with the motor to charge the charge accumulator device; and a second switch for selectively connecting the charge accumulator device in series with the power source to provide additional power to the motor, wherein, when the first switch is temporarily connecting the charge accumulator device to the power source, the second switch is not selectively connecting the charge accumulator device in series with the power source. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. A surgical instrument system comprising:
-
an end effector comprising a moveable cutting instrument; an electric motor for actuating the cutting instrument, wherein the motor comprises at least two windings; and a motor control circuit connected to the motor that selectively connects the at least two motor windings in series during a first time period and connects the at least two motor windings in parallel during a second time period. - View Dependent Claims (13, 14, 15)
-
-
16. A surgical instrument system comprising:
-
an end effector comprising a moveable cutting instrument; an electric motor for actuating the cutting instrument; a removable battery pack for powering the motor, wherein the battery pack comprises a plurality of battery cells, wherein the plurality of battery cells comprises a first plurality of series-connected battery cells and a second plurality of series-connected battery cells; and a battery cell connector, separate from the battery pack, that connects in series the first plurality of series-connected battery cells to the second plurality of series-connected battery cells when the battery pack is installed in the surgical instrument system, wherein the first plurality of series-connected battery cells is not connected in series with the second plurality of series-connected battery cells in the removable battery pack until connected in series by the battery cell connector upon installation of the battery pack in the surgical instrument system. - View Dependent Claims (17, 18, 19)
-
-
20. A surgical instrument system comprising:
-
an end effector comprising a moveable cutting instrument; an electric motor communicating with the end effector for actuating the cutting instrument; a motor control circuit for controlling the motor, wherein the motor control circuit comprises; a power source connected to the motor for electrically powering the motor; a charge accumulator device; and a switching circuit connected to the power source and the charge accumulator device, wherein the switching circuit comprises; a first switch for temporarily connecting the charge accumulator device to the power source in parallel to the motor to charge the charge accumulator device; and a second switch for selectively connecting the charge accumulator device in series with the power source to provide additional power to the motor, wherein, when the first switch is temporarily connecting the charge accumulator device to the power source, the second switch is not selectively connecting the charge accumulator device in series with the power source.
-
Specification