초록 ▼

A drive motor for an infusion pump system includes a novel outer housing which includes a unitary member which defines a cavity adapted to receive a winding wherein the housing cavity has a length at least as long as length of the winding. In one embodiment, the housing unitary member has an opening

A drive motor for an infusion pump system includes a novel outer housing which includes a unitary member which defines a cavity adapted to receive a winding wherein the housing cavity has a length at least as long as length of the winding. In one embodiment, the housing unitary member has an opening at one end and is adapted to receive a housing end member which has a guide track for an armature. Such an arrangement facilitates assembly and disassembly of the motor for fabrication, inspection and repair purposes yet also facilitates proper alignment of the components when assembled. In another aspect, a push member positioned to be engaged by the armature has an engagement face which is at least 40% of the width of the armature engagement face. In still another aspect of the present inventions, the armature head portion is wider than the armature stem portion and has a length at least 10% of the winding length. In yet another aspect of the present inventions the push member may have a single diameter cylindrical shape and the push member guide track similarly may have a single diameter cylindrical shape which is sized to slidingly receive the push member. It is believed that one or more of these features can increase the actuation force provided by the motor yet maintain a compact size.

대표청구항 ▼

A drive motor for an infusion pump system includes a novel outer housing which includes a unitary member which defines a cavity adapted to receive a winding wherein the housing cavity has a length at least as long as length of the winding. In one embodiment, the housing unitary member has an opening

A drive motor for an infusion pump system includes a novel outer housing which includes a unitary member which defines a cavity adapted to receive a winding wherein the housing cavity has a length at least as long as length of the winding. In one embodiment, the housing unitary member has an opening at one end and is adapted to receive a housing end member which has a guide track for an armature. Such an arrangement facilitates assembly and disassembly of the motor for fabrication, inspection and repair purposes yet also facilitates proper alignment of the components when assembled. In another aspect, a push member positioned to be engaged by the armature has an engagement face which is at least 40% of the width of the armature engagement face. In still another aspect of the present inventions, the armature head portion is wider than the armature stem portion and has a length at least 10% of the winding length. In yet another aspect of the present inventions the push member may have a single diameter cylindrical shape and the push member guide track similarly may have a single diameter cylindrical shape which is sized to slidingly receive the push member. It is believed that one or more of these features can increase the actuation force provided by the motor yet maintain a compact size. ating the balloon. 8. The inflatable balloon catheter of claim 6, wherein the balloon is made of a styrene-ethylene-butylene-styrene (SEBS) material. 9. The inflatable balloon catheter of claim 6, wherein the longitudinal expansion of the longitudinally pre-stretched balloon is about 20% to 50% less during inflation than that of the balloon with identical dimensions and composition that has not been longitudinally pre-stretched when each of the balloons is inflated under identical conditions. 6P m 24, wherein said second elongate section forms a light pipe and includes a surface thereon for directing light forwardly therefrom. 29. An illuminated surgical retractor for retracting tissue in a surgical site and illuminating the adjacent tissue of a patient, the retractor comprising: a handle me