EP0399701B2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Surgical stapling apparatus
Assignee: United States Surgical Corp
•
Filing: 1990-05-10
•
Granted: 2003-08-06
•
Expires: 2010-05-10
Abstract
Abstract A surgical stapler (100) for placing lateral lines of staples and making an incision, all through an endoscopic tube (103), includes an anvil member (136) which is mounted to the distal end of an elongate housing (134). A tubular collar (127) disposed around the arm of the anvil member is movable to a distal position to bias the anvil member and a cartridge assembly into co-operative alignment, thereby clamping body tissue to be fastened between the anvil member and cartridge assembly.
Inventors
- 👤 David T. Green
- 👤 Henry Bolanos
- 👤 Daniel E. Alesi
- 👤 Keith Ratcliff
- 👤 Charles R. Sherts
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 15:31
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/068; A61B17/072; A61B17/07207; A61B17/00234; A61B2017/07214
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
292 words
Surgical apparatus (100) for driving surgical fasteners into body tissue for
adjoining two hollow organs, and comprising: a) a frame (102); b) an endoscopic portion defining a longitudinal axis and extending distally
from said frame, said endoscopic portion including: i) an elongate housing (134) having a distal member (134B) for
mounting a cartridge assembly (137), said cartridge assembly (137) including a
plurality of surgical fasteners (138) slidably mounted therein, arranged in a plurality of lines, and having a
tissue-engaging surface; ii) an anvil member (136) having a proximal end (136C) and a
fastener-forming surface (136D), and a longitudinal centre groove (136F) to
permit passage of a knife, said proximal end (136C) mounted to said elongate
housing such that the anvil member is movable between an open position and a
closed position wherein said fastener-forming surface has a plurality of fastener-forming depressions arranged in a plurality of lines and is in close co-operative
alignment with said tissue-engaging surface of said cartridge assembly; iii) means (127, 327) for moving said anvil member between said open position
and said closed position which, by distal movement, moves the anvil member to
its closed position and clamps tissue between the anvil member and the
cartridge assembly; iv) independent means (129) for ejecting said surgical fasteners from said
cartridge assembly after having clamped said tissue, whereby all of said plurality of fasteners engage said fastener-forming
surface in one actuation of said ejecting means; and wherein v) the anvil member is pivotally mounted relative to the elongate
housing proximally of its fastener-forming surface (136D); and further wherein: said endoscopic portion (103) having a gripping ring (424) or thumb wheel (123) at its proximal end for rotating the endoscopie portion around said longitudinal axis and
relative to said frame (102).
Claim 2
Dependent Claim
143 words
Surgical apparatus as claimed in claim 1,
wherein said means for moving said anvil
member between said open position and said
closed position further comprise: a) a tubular collar (127) disposed around at
least a portion of said elongate housing and
said anvil member, said tubular collar having
a distal camming edge and being movable
between a first position in which said
camming edge is located proximally to the
proximal end of said anvil member, and a
second position in which said camming
edge is located distally to the proximal end
of said anvil member, said tubular collar
cooperating with said anvil member such
that when the collar is moved from said first
position to said second position, said anvil
member is urged to said closed position;
and b) means (125) for moving said collar between
said first position and said second
position.
Claim 3
Dependent Claim
89 words
Surgical apparatus as claimed in claim 2,
wherein said means for moving said collar
between said first position and said second
position comprises; a) a collar plug (126) for mounting to the
proximal end of said collar, said collar having
at least one circumferential slot, said
collar plug having at least one radial projection
configured and dimensioned to engage
said circumferential slot; and b) means (125) for moving said collar plug
longitudinally relative to said elongate housing,
thereby moving said collar between
said first position and said second position.
Claim 4
Dependent Claim
87 words
Surgical apparatus as claimed in claim 2 or 3,
wherein said means for moving said collar
between said first position and said second
position comprises: a) a collar shaft (125) extending longitudinal
to said housing and having proximal and
distal ends; b) means (115) for longitudinally moving
said collar shaft relative to said housing;
and c) means (126) for transmitting longitudinal
movement from the distal end of said collar
shaft to said collar such that said collar is
movable between said first position and said
second position.
Claim 5
Dependent Claim
117 words
Surgical apparatus as claimed in claim 4,
wherein said means for moving said collar
between said first position and said second
position further comprises: a) a substantially cylindrical collar pivot
wheel (115) slidably mounted within said
frame, said collar pivot wheel being configured
and dimensioned to receive the proximal
end of said collar shaft, said collar pivot
sheel also being rotatable and longitudinally
movable relative to said frame and longitudinally
aligned with said tubular collar; b) means (115B, 125A) for transmitting longitudinal
movement from said collar pivot
wheel to said collar shaft; and c) means (112) for longitudinally moving
said collar pivot wheel such that said collar
is movable between said first position and
said second position.
Claim 6
Dependent Claim
94 words
Surgical apparatus as claimed in claim 5
wherein said means for longitudinally moving
said collar pivot wheel further comprises a
collar pivot holder (112) longitudinally slidably
mounted within the interior of said frame, said
collar pivot holder being substantially cylindrical
and having a distal end engaging said
collar pivot wheel, said collar pivot wheel being
rotatable relative to said collar pivot holder but
longitudinally fixed relative to said collar pivot
holder also having a proximal end engaging a
collar moving pivot (111) for longitudinally
moving said collar pivot holder in response to
manual pressure.
Claim 7
Dependent Claim
50 words
Surgical stapling apparatus as claimed in claim
5 or 6, wherein said collar pivot wheel has a
central aperture extending axially therethrough
for rotatably engaging a stud (114) longitudinally
fixed to the distal end of said collar pivot
holder, said collar pivot wheel being longitudinally
fixed relative to said stud.
Claim 8
Dependent Claim
21 words
Surgical apparatus as claimed in any one of
the preceding claims, wherein the endoscopic
portion is detachably connected to said frame.
Claim 9
Dependent Claim
108 words
Surgical apparatus as claimed in any one of
the preceding claims, wherein said means for
moving said anvil member between said open
and said closed positions further comprises a
collar tube having a shaft portion (125) disposed
within an longitudinally movable relative
to said housing and a clamping portion (127)
protruding from the distal end of said housing,
said clamping portion surrounding a portion of
said anvil member (126), said collar tube being
movable between a first position wherein said
clamping portion is adjacent said housing and
a second position wherein said clamping portion
is distal to said housing and urges said
anvil member into said closed position.
Claim 10
Dependent Claim
21 words
Surgical apparatus as claimed in any one of
the preceding claims, wherein said anvil member
is movably mounted to said housing.
Claim 11
Dependent Claim
20 words
Surgical apparatus as claimed in claim 10,
wherein the anvil member is mounted to the
housing by a leaf spring.
Claim 12
Dependent Claim
55 words
Surgical apparatus according to any one of the
preceding claims, which includes said cartridge
assembly and wherein said means (139)
for ejecting said surgical fasteners further comprises
at least one cam bar (129) for actuating
pusher elements (139) within said cartridge
assembly to drive said fasteners as said cam
bar longitudinally traverses said cartridge assembly.
Claim 13
Dependent Claim
15 words
Surgical apparatus as claimed in claim 12,
wherein said cartridge assembly further includes
a knife.
Claim 14
Dependent Claim
17 words
Surgical apparatus as claimed in claim 13,
wherein the knife (132) is mounted to said cam
bar.
Claim 15
Dependent Claim
21 words
Surgical apparatus as claimed in claims 12, 13
or 14, wherein said cartridge assembly is removably
mounted to said elongate housing.
Claim 16
Dependent Claim
30 words
Surgical apparatus as claimed in claim 15,
wherein said cartridge assembly, means for
ejecting said surgical fasteners and knife are
removable from said elongate housing for replacement
as a unit.
Claim 17
Dependent Claim
31 words
Surgical apparatus as claimed in any one of
the preceding claims,
comprising a sleeve extending between the
frame (102) and the endoscopic portion (103)
and mounted for rotation with the thumbwheel.
Claim 18
Dependent Claim
26 words
Surgical apparatus as claimed in any one of
the preceding claims and including a safety
locking mechanism to prevent premature actuation
of the ejecting means (139).
Claim 19
Dependent Claim
53 words
Surgical apparatus as claimed in claim 18
wherein the safety locking mechanism comprises
a locking pin (533) which is mounted to
the frame (102) which engages with the ejecting
means (576) and which is displaced out of
said engagement by a movement of the camming
means (127) to close the anvil member
(136).
References Cited (Backward Citations)
No citation records indexed.
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