Using thinner laminations to reduce operating temperature in a high speed hand-held surgical power tool
First Claim
Patent Images
1. A surgical instrument, comprising:
- a housing;
an electrical power source;
an output shaft extending from the housing;
a rotor coupled to the output shaft; and
a stator having;
a winding selectively connectable to the electrical power source; and
a magnetically conductive portion disposed about the rotor and comprising a plurality of laminations, wherein one or more of the plurality of laminations has a thickness of less than about 0.25 mm;
wherein selectively connecting the electrical power source and the stator windings imparts rotary motion to the output shaft via the rotor.
0 Assignments
0 Petitions
Accused Products
Abstract
A surgical instrument having an electric motor is discussed. The motor includes a motor output member, a driven member and a driving member. The driven member is coupled to the motor output member. The driving member includes a winding and a magnetically conductive portion comprising a plurality of laminations having thicknesses of less than 0.25 mm. The driving member, or at least the magnetically conductive portion thereof, is disposed proximate the driven member such that energizing the driving member imparts motion to the driven member.
-
Citations
30 Claims
-
1. A surgical instrument, comprising:
-
a housing;
an electrical power source;
an output shaft extending from the housing;
a rotor coupled to the output shaft; and
a stator having;
a winding selectively connectable to the electrical power source; and
a magnetically conductive portion disposed about the rotor and comprising a plurality of laminations, wherein one or more of the plurality of laminations has a thickness of less than about 0.25 mm;
wherein selectively connecting the electrical power source and the stator windings imparts rotary motion to the output shaft via the rotor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
-
-
25. An electric motor for use in a surgical procedure, comprising:
-
a motor output member;
a driven member coupled to the motor output member; and
a driving member having a winding and a magnetically conductive portion disposed proximate the driven member such that energizing the driving member imparts motion to the driven member, wherein the magnetically conductive portion comprises a plurality of laminations, and wherein one or more of the laminations having a thickness of less than or equal to about 0.2 mm. - View Dependent Claims (26, 27, 28, 29, 30)
-
Specification