1. An anvil assembly for use with a surgical stapler, the anvil assembly comprising:
a tissue contact surface;
a plurality of staple pockets formed in the tissue contact surface, each of the plurality of staple pockets defining a longitudinal axis; and
each of the plurality of staple pockets including first and second staple forming cups, each of the first and second staple forming cups having an outside portion and an inside portion, the inside portion of the first and second staple forming cups being positioned in close relation to each, the outside portion of the first and second staple forming cups being positioned in spaced relation to each other, each of the first and second staple forming cups being defined by sidewalls and an elongated base surface;
wherein upper portions of the sidewalls intersect the tissue contact surface at a line of intersection, and wherein the line of intersection is curved along a majority of its length between the outside portion and the inside portion of each of the staple forming cups.
2. The anvil assembly of claim 1, wherein the elongated base surface extends along each of the plurality of staple pockets.
3. The anvil assembly of claim 1, wherein the elongated base surface of each of the first and second staple forming cups is transversely linear along the majority of its length.
4. The anvil assembly of claim 2, wherein the elongated base surface of each of the first and second staple forming cups is transversely linear along the majority of its length.
5. The anvil assembly of claim 1, wherein the sidewalls of each of the first and second staple forming cups form an acute angle with respect to a tissue contact surface of the anvil assembly at an outside portion of each of the first and second staple forming cups.
6. The anvil assembly of claim 1, in combination with a surgical stapler comprising a staple cartridge having a plurality of directionally biased staples contained therein and pushers to advance the staples.
7. The anvil assembly and surgical stapler of claim 6, wherein the staples are advanced toward the anvil assembly in a direction along the longitudinal axis of the stapler.
8. The anvil assembly and surgical stapler of claim 6, wherein the staples are advanced toward the anvil assembly in a direction transverse to the longitudinal axis of the stapler.
9. The anvil assembly and surgical stapler of claim 6, wherein the staples are arranged in substantially linear rows and the staple pockets are arranged in substantially linear rows.
10. The anvil assembly and surgical stapler of claim 6, wherein the staples are non-circular in cross section.
11. The anvil assembly and surgical stapler of claim 10, wherein the staples are oval in cross-section.
12. The anvil assembly and surgical stapler of claim 10, wherein the staples are trapezoidal in cross-section.
13. The anvil assembly and surgical stapler of claim 10, wherein the staples are oval in cross- section.
14. The anvil assembly and surgical stapler of claim 10, wherein the staples are rectangular in cross-section.
15. The anvil assembly and surgical stapler of claim 10, wherein the staples are triangular in cross-section.
16. The anvil assembly and surgical stapler of claim 15, wherein the staples are scalene triangular in cross-section.
17. The anvil assembly and surgical stapler of claim 10, wherein the staples are substantially oval with linear sides in cross-section.
18. The anvil assembly and surgical stapler of claim 10, wherein the staples form an inverse trapezoidal shape in cross-section.
19. The anvil assembly and surgical stapler of claim 15, wherein axes through the triangular section are offset from the center of the triangle.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A pump, comprising:
a pump fluid end having a manifold mating surface surrounding a pump fluid port;
a manifold adapted to be affixed to the pump fluid end by a fastener and having a pump mating surface adapted to abut and seal with the manifold mating surface to enable communication of fluid between the pump fluid end and the manifold via the pump fluid port; and
a manifold support extending outward from the pump fluid end, the manifold support shaped to engage the manifold when detached from the fluid end and:
support the weight of the manifold in a first position with the manifold upright and the pump mating surface adjacent the manifold mating surface, and
guide the manifold, still supported, to move to a second position with the manifold upright and the pump mating surface apart from the manifold mating surface.
2. The pump of claim 1, wherein the manifold mating surface and the pump fluid end mating surface are substantially planar and the pump fluid end mating surface is supported oriented toward and substantially parallel to the manifold mating surface when in the first position.
3. The pump of claim 2, wherein the pump fluid end mating surface is substantially parallel to the manifold mating surface when in the second position.
4. The pump of claim 1, wherein the manifold support comprises a track for engaging both an upward facing and a downward facing surface of the manifold.
5. The pump of claim 4, wherein the manifold comprises a flange and the track engages upward facing and downward facing surfaces of the flange.
6. The pump of claim 5, wherein the track comprises a plurality of support pins arranged in a line and positioned to enable the flange to rest on the support pins when the manifold is supported by the manifold support.
7. The pump of claim 6, wherein the support pins comprise rollers.
8. The pump of claim 1, wherein the manifold support guides the manifold to move in a substantially straight path between the first and second position.
9. The pump of claim 1, wherein the manifold support guides the manifold, still supported, to move to a third position apart from the manifold mating surface and on an opposite side of the manifold mating surface from the second position.
10. The pump of claim 1, wherein the manifold support includes provisions to lock the manifold in the second position.
11. A method of servicing a pump, comprising:
disconnecting a manifold of the pump from a remainder of the pump;
supporting the manifold in an orientation adjacent a manifold mating surface on a manifold support of the pump; and
displacing the manifold apart from the manifold mating surface while the manifold is supported in the same orientation on the manifold support.
12. The method of claim 11, wherein the manifold has a planar pump mating surface and the manifold mating surface is planar, and when upright, the pump mating surface is substantially parallel to the manifold mating surface.
13. The method of claim 11, wherein displacing the manifold from the manifold mating surface comprises moving the manifold along a track of the manifold support.
14. The method of claim 11, further comprising locking the manifold in a position apart from the manifold mating surface.
15. The method of claim 11, installing manifold supports to the pump, and using the manifold supports to support the manifold in the supporting and displacing steps.
16. A device attachable to a pump, the pump having a pump fluid end and a manifold that is detachable from the fluid end, the device comprising:
a manifold support beam portion adapted to affix to the pump fluid end at a location adjacent a manifold mating surface of the pump fluid end and extend outward from the pump fluid end; and
a support on the manifold support beam portion that, when the manifold support beam portion is affixed to the fluid end of the pump, engages the manifold detached from the fluid end and supports the weight of the manifold in a first position with a pump body mating surface of the manifold adjacent a manifold mating surface and guides the manifold, still supported, to slide in a substantially straight path to a second position, apart from the manifold mating surface.
17. The device of claim 16, wherein the manifold support beam comprises a flange and the support comprises a track that engages upward facing and downward facing surfaces of the flange.
18. The device of claim 17, wherein the track comprises rollers.
19. The device of claim 16, wherein the manifold support beam is maintained upright in the first position and the second position.
20. The device of claim 16, wherein the manifold support beam includes provisions to lock the manifold in the second position.