Composite interconnected anvil for medical stapler
AssigneeCilag GmbH International
InventorFREDERICK E. SHELTON, IV
Life of this patent
Estimating the term…
Abstract
A medical stapler anvil including an anvil pocket beam and an anvil back beam. The anvil pocket beam can include a plurality of staple forming pockets and an anvil pocket beam moment of inertia. The anvil back beam can be fixedly attached to the anvil pocket beam and can include a crown disposed opposite the plurality of staple forming pockets and an anvil back beam moment of inertia approximately equal to the anvil pocket beam moment of inertia. The anvil pocket beam and the anvil back beam can be stamped from sheet metal.
Claims19
1-15. (canceled)
A medical stapler anvil comprising:
- an anvil pocket beam with an anvil pocket beam stiffness, the anvil pocket beam comprising:
- an anvil pocket beam stiffness;
- a plurality of staple forming pockets;
- and
- an anvil pocket beam moment of inertia;
- an anvil back beam fixedly attached to the anvil pocket beam, comprising:
- an anvil back beam stiffness approximately equal to the anvil pocket beam stiffness;
- a crown disposed opposite the plurality of staple forming pockets;
- and
- an anvil back beam moment of inertia approximately equal to the anvil pocket beam moment of inertia;
- and
- a composite moment of inertia comprising the anvil pocket beam moment of inertia and the anvil back beam moment of inertia and comprising a range of 0.000015 to approximately 0.000035 in4.
17-18. (canceled)
A medical stapler anvil comprising:
- an anvil pocket beam having an anvil pocket beam stiffness, the anvil pocket beam further comprising:
- a plurality of staple forming pockets;
- and
- an anvil pocket beam moment of inertia;
- an anvil back beam fixedly attached to the anvil pocket beam comprising:
- an anvil back beam stiffness approximately equal to the anvil pocket beam stiffness;
- a crown disposed opposite the plurality of staple forming pockets;
- and
- an anvil back beam moment of inertia approximately equal to the anvil pocket beam moment of inertia;
- a proximal end;
- a distal end;
- and
- a longitudinal axis between the proximal and distal ends, wherein the anvil back beam is formed from a shaped sheet, wherein the crown comprises:
- a central ridge parallel to the longitudinal axis;
- and
- two lateral sides extending therefrom, and wherein the anvil pocket beam further comprises a pocket surface in contact with anvil back beam, and two folded edges.
A medical stapler anvil comprising:
- an anvil pocket beam comprising:
- a plurality of staple forming pockets;
- and
- an anvil pocket beam moment of inertia;
- a first beam comprising approximately half of the plurality of staple forming pockets;
- and
- a second beam comprising a remainder of the plurality of staple forming pockets;
- and
- a slot formed between the first and second beams and extending parallel to a longitudinal axis;
- an anvil back beam fixedly attached to the anvil pocket beam, comprising:
- a crown disposed opposite the plurality of staple forming pockets;
- and
- an anvil back beam moment of inertia approximately equal to the anvil pocket beam moment of inertia,
- wherein the first and second beams fixedly attached to opposite lateral portions of the anvil back beam along the longitudinal axis,
- wherein the anvil back beam and the anvil pocket beam are each formed from one or more sheets of metal having equal thicknesses.
29-30. (canceled)
An anvil for a medical stapler, the anvil extending along a longitudinal axis from a proximal end to a distal end and comprising:
- a first section comprising:
- a shaped sheet comprising:
- a central ridge parallel to the longitudinal axis;
- a first lateral side extending from the central ridge and comprising;
- a first inferior ridge;
- a first trough disposed between the first inferior ridge and the central ridge;
- a first outer edge;
- and
- a first curled end;
- a second lateral side extending from the central ridge and comprising;
- a second inferior ridge;
- a second trough disposed between the second inferior ridge and the central ridge;
- a second outer edge;
- and
- a second curled end;
- and
- a second section comprising:
- a pocket surface in contact with the first and second curled ends;
- a first folded edge disposed proximate the first outer edge;
- and
- a second folded edge disposed proximate the second outer edge.
Dependencies are inferred from the claim text.