EP0885595A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Anastomosis instrument with detachable loading unit
Assignee: United States Surgical Corp
•
Filing: 1998-06-16
•
Granted: —
•
Expires: 2018-06-16
Abstract
Abstract There is disclosed a surgical instrument (10) and loading unit (16) for performing an anastomosis of first and second blood vessels. The surgical instrument (10) includes a handle assembly (12) and a body portion (14) extending distally from the handle assembly. The detachable loading unit (16) includes an anvil (126) releasably engagable with a distal end of the body portion and having a plurality of fasteners (130) disposed in channels about the circumference of a distal end of the anvil. A pusher (128) is slidably mounted over the anvil such that distal movement of the pusher (128) in response to actuation of the handle assembly (12) cams the fasteners (130) between the anvil and a distal end of the pusher to simultaneously crimp the fasteners about tissue. In performing an anastomosis a first vessel is positioned in the loading unit and partially inserted through an opening in a second vessel. The surgical instrument (10) is subsequently attached to the loading unit (16) and the handle assembly (12) is actuated to crimp fasteners (130) about the first and second vessels to form an anastomosis.
Inventors
- 👤 Scott E. Manzo
- 👤 Richard D. Gresham
- 👤 Kevin Sniffin
- 👤 Peter W. J. Hinchliffe
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 07:36
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/11; A61B17/115; A61B17/1152; A61B17/12; A61B17/128; A61B17/1285; A61B17/08; A61B17/083; A61B2017/1107; A61B2017/1135
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
74 words
A detachable loading unit for use with a surgical
fastener apparatus comprising: a) a generally cylindrical anvil member having structure
for releasably engaging a portion of a surgical fastener apparatus; b) a plurality of surgical clips circumferentially disposed
on the anvil member; and c) a pusher coaxially mounted with respect to the anvil
member such that the clips are held between a distal end of the anvil
and a distal end of the pusher.
Claim 2
Dependent Claim
26 words
The loading unit as recited in any preceding claim,
wherein the anvil member and pusher define a passage for receipt of a
segment of vascular tissue.
Claim 3
Dependent Claim
23 words
The loading unit as recited in any preceding claim,
wherein the pusher is formed of a pair of pusher halves pivotally
connected together.
Claim 4
Dependent Claim
23 words
The loading unit as recited in any preceding claim,
wherein the anvil member is formed as pair of anvil halves pivotably
connected together.
Claim 5
Dependent Claim
22 words
The loading unit as recited in any preceding claim,
wherein the pusher halves and the anvil halves pivot about a common
axis.
Claim 6
Dependent Claim
24 words
The loading unit as recited in any preceding claim,
further comprising a latch mechanism for releasably retaining the anvil
halves and pusher halves together.
Claim 7
Dependent Claim
45 words
The loading unit as recited in any preceding claim,
further comprising a locking disk positionable about a proximal end of
the anvil member and against a proximal end of the pusher member such
that the clips are retained between the anvil member and the pusher.
Claim 8
Dependent Claim
24 words
The loading unit as recited in any preceding claim,
wherein distal movement of the pusher relative to the anvil member
simultaneously deforms the clips.
Claim 9
Dependent Claim
44 words
The loading unit as recited in any preceding claim,
wherein the anvil member defines a bore for receipt of a section of
vascular tissue therein; and wherein the surgical clips are positioned within
longitudinal channels formed in an outer surface of the anvil member.
Claim 10
Dependent Claim
33 words
The loading unit as recited in any preceding claim,
wherein at least one leg portion of the plurality of surgical clips is
directed radially outwardly of the bore defined by the anvil member.
Claim 11
Dependent Claim
66 words
The loading unit as recited in any preceding claim,
wherein a first end of the bore is open to a distal end of the anvil
member and a second end of the bore forms an exit in the anvil member
distal to the proximal end of the anvil member and a portion of the
anvil member defining the bore is formed as halves pivotally connected
together.
Claim 12
Dependent Claim
25 words
The loading unit as recited in any preceding claim,
wherein each clip of the plurality of surgical clips is an atraumatic
non-tissue penetrating surgical clip.
Claim 13
Dependent Claim
102 words
A surgical instrument comprising: a) a handle assembly; b) an anvil support extending distally from the handle
assembly; c) an actuator movable with respect to the anvil support;
and d) a loading unit having: i) an anvil removably supported on a distal end of
the anvil support; ii) a plurality of surgical clips circumferentially
disposed about the anvil member; and iii) a pusher movable relative to the anvil member
and engagable with the actuator, wherein
movement of the actuator relative to the anvil
support simultaneously deforms the plurality of
surgical clips between the anvil member and a
distal end of the pusher.
Claim 14
Dependent Claim
38 words
The surgical instrument as recited in Claim 13, further
comprising a slider mechanism movable between a first position remote
from the anvil and a second position firmly affixing the anvil to the
distal end of the anvil support.
Claim 15
Dependent Claim
61 words
The surgical instrument as recited in Claim 13 or 14,
wherein the actuator includes at least one handle movably mounted to the
handle assembly and further comprising a lockout button movably mounted
to the housing and movable between a first position blocking movement of
the at least one handle and a second position allowing movement of the
at least one handle.
Claim 16
Dependent Claim
44 words
The surgical instrument as recited in Claim 13, wherein
the anvil defines a passage for receipt of a blood vessel and further
comprising a latch mechanism on the anvil and actuable from the handle
assembly to release the blood vessel from within the passage.
References Cited (Backward Citations)
GB935490A
Cited
US4586503A
Cited
US4700703A
Cited
US4872874A
Cited
US5025779A
Cited
EP0384647A1
Cited
US5234447A
Cited
WO1995015715A1
Cited
WO1995035065A1
Cited
US5503617A
Cited
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.