US4665916A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surgical stapler apparatus
Assignee: United States Surgical Corp
•
Filing: 1985-08-09
•
Granted: 1987-05-19
•
Expires: 2005-08-09
Abstract
Abstract Surgical stapler apparatus for forming an array of surgical fasteners in body tissue includes an anvil assembly against which the fasteners are formed and a fastener holder pivotally mounted adjacent one end of the anvil assembly, a spacer member at the other end so constructed to displace tissue that would otherwise obstruct the spacer member from properly positioning the fastener holder relative to the anvil assembly to ensure proper fastener formation, and a knife assembly to cut the tissue between the rows of formed fasteners.
Inventors
- 👤 David T. Green
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:30
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/068; A61B17/072
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
313 words
A surgical fastener cartridge for use with an actuator assembly including a rigid frame having a U-shaped portion for simultaneously forming a plurality of surgical fasteners in body tissue comprising an anvil assembly; a fastener holder pivotally connected to the anvil assembly adjacent one end of the anvil assembly, the fastener holder containing a plurality of surgical fasteners and including fastener driving means for substantially simultaneously driving all of the fasteners from the fastener holder; means associated with the anvil assembly for allowing the cartridge to be removably mounted on the actuator frame so that the anvil assembly is adjacent a first leg of the U-shaped portion, so that the pivotal connection between the anvil assembly and the fastener holder is adjacent the base of the U-shaped portion, and so that the fastener holder is adjacent a second leg of the U-shaped portion, the fastener holder being movable relative to the frame when the cartridge is thus mounted on the frame so that when the fastener holder is pivoted away from the anvil assembly, the tissue to be fastened can be positioned between the anvil assembly and the fastener holder via the open side of the U-shaped portion; spacer means located adjacent the side of the cartridge opposite the pivotal connection between the anvil assembly and the fastener holder for maintaining a predetermined minimum spacing between the anvil assembly and the fastener holder when the fastener holder is pivoted toward the anvil assembly; the improvement comprising means associated with the spacer means for displacing tissue which extends beyond the ends of the fastener holder and anvil assembly to ensure that the fastener holder and anvil assembly are positioned correctly relative to each other after the fastener holder is pivoted toward the anvil assembly, said tissue displacing means comprising two surfaces sloping toward each other to form a knife-like edge to displace the tissue.
Claim 2
Dependent Claim
313 words
A surgical fastener cartridge for use with an actuator assembly including a rigid frame having a U-shaped portion for simultaneously forming a plurality of surgical fasteners in body tissue comprising an anvil assembly; a fastener holder pivotally connected to the anvil assembly adjacent one end of the anvil assembly, the fastener holder containing a plurality of surgical fasteners and including fastener driving means for substantially simultaneously driving all of the fasteners from the fastener holder; means associated with the anvil assembly for allowing the cartridge to be removably mounted on the actuator frame so that the anvil assembly is adjacent a first leg of the U-shaped portion, so that the pivotal connection between the anvil assembly and the fastener holder is adjacent the base of the U-shaped portion, and so that the fastener holder is adjacent a second leg of the U-shaped portion, the fastener holder being movable relative to the frame when the cartridge is thus mounted on the frame so that when the fastener holder is pivoted away from the anvil assembly, the tissue to be fastened can be positioned between the anvil assembly and the fastener holder via the open side of the U-shaped portion; spacer means located adjacent the side of the cartridge opposite the pivotal connection between the anvil assembly and the fastener holder for maintaining a predetermined minimum spacing between the anvil assembly and the fastener holder when the fastener holder is pivoted toward the anvil assembly; the improvement comprising means associated with the spacer means for displacing tissue which extends beyond the ends of the fastener holder and anvil assembly to ensure that the fastener holder and anvil assembly are positioned correctly relative to each other after the fastener holder is pivoted toward the anvil assembly, said tissue displacing means comprising two surfaces sloping toward each other to form a knife-like edge to displace the tissue.
Claim 3
Dependent Claim
25 words
The cartridge defined in claim 1 in which the tissue displacing means further comprises two U-shaped surfaces extending from the surface of the fastener holder.
Claim 4
Dependent Claim
140 words
The cartridge defined in claim 1 further comprising alignment means located adjacent the side of the cartridge opposite the pivotal connection between the anvil assembly and the fastener holder fo aligning the anvil assembly and fastener holder in a direction parallel to the pivotal axis when the fastener holder is pivoted toward the anvil assembly to clamp the tissue to be fastened between the fastener holder and the anvil assembly, the alignment means comprising surface portions associated with each of the fastener holder and the anvil assembly, the surface portions being substantially perpendicular to the pivotal axis and being substantially rigid in a direction parallel to the pivotal axis, the surface portions associated with the fastener holder contacting the surface portions associated with the anvil assembly when the fastener holder is pivoted toward the anvil assembly to clamp the tissue.
Claim 5
Dependent Claim
46 words
The cartridge defined in claim 3 wherein the alignment means comprises a pin substantially perpendicular to the pivotal axis which extends into both the fastener holder and the anvil assembly when the fastener holder and anvil assembly are pivoted toward one another to clamp the tissue.
Claim 6
Dependent Claim
47 words
The cartridge defined in claim 4 wherein the tip of the pin is conically-shaped to enable it to penetrate tissue obstructing the aperture into which the pin is to be inserted when the fastener holder and anvil assembly are pivoted toward one another to clamp the tissue.
Claim 7
Dependent Claim
56 words
A surgical actuator assembly utilizing the surgical fastener cartridge of claim 1 or claim 3 comprising: a rigid frame having a normally open peripheral portion for admitting body tissue to be fastened into an interior region of the frame; and clamp actuator means for pivoting the fastener holder toward the anvil assembly to clamp the tissue.
Claim 8
Dependent Claim
26 words
The cartridge defined in claim 1 or claim 3 further comprising knife means for cutting the tissue clamped between the fastener holder and the anvil assembly.
Claim 9
Dependent Claim
54 words
The cartridge defined in claim 7 wherein the distal end of the knife means is positioned proximally of the distal end of the fasteners held in the fastener holder and further comprising knife driving means associated with the fastener driving means for simultaneously driving the fasteners and the knife means from the fastener holder.
Claim 10
Dependent Claim
263 words
A surgical stapler for simultaneously forming a plurality of surgical fasteners in body tissue comprising a rigid frame having a U-shaped portion; an anvil assembly mounted on a first leg of the U-shaped portion so that the anvil assembly is stationary relative to the frame; a fastener holder disposed adjacent the second leg of the U-shaped portion and being pivotally mounted adjacent one end of the anvil assembly, the pivotal mounting being adjacent the base of the U-shaped portion, the fastener holder containing a plurality of surgical fasteners and including means for simultaneously driving the fasteners from the fastener holder; actuator means mounted on the frame for pivoting the fastener holder toward the anvil assembly and actuating the means for driving the fasteners from the fastener holder; an alignment pin mounted on said holder and having an end for piercing tissue disposed between said anvil assembly and said holder; and a spacer member at a location remote from the pivotal mounting of the fastener holder for contacting a portion of the anvil assembly opposite the fastener holder when the fastener holder is pivoted to span the normally open peripheral portion and for maintaining a gap between the remainder of the fastener holder and the anvil assembly; wherein the spacer member is shaped so that, when tissue extends past the open peripheral portion of the retainer holder and fastener holder, the tissue pierced by said pin is displaced as the fastener holder closes against the anvil assembly to ensure that the proper minimum distance is achieved between the fastener holder and the anvil assembly.
Claim 11
Dependent Claim
263 words
A surgical stapler for simultaneously forming a plurality of surgical fasteners in body tissue comprising a rigid frame having a U-shaped portion; an anvil assembly mounted on a first leg of the U-shaped portion so that the anvil assembly is stationary relative to the frame; a fastener holder disposed adjacent the second leg of the U-shaped portion and being pivotally mounted adjacent one end of the anvil assembly, the pivotal mounting being adjacent the base of the U-shaped portion, the fastener holder containing a plurality of surgical fasteners and including means for simultaneously driving the fasteners from the fastener holder; actuator means mounted on the frame for pivoting the fastener holder toward the anvil assembly and actuating the means for driving the fasteners from the fastener holder; an alignment pin mounted on said holder and having an end for piercing tissue disposed between said anvil assembly and said holder; and a spacer member at a location remote from the pivotal mounting of the fastener holder for contacting a portion of the anvil assembly opposite the fastener holder when the fastener holder is pivoted to span the normally open peripheral portion and for maintaining a gap between the remainder of the fastener holder and the anvil assembly; wherein the spacer member is shaped so that, when tissue extends past the open peripheral portion of the retainer holder and fastener holder, the tissue pierced by said pin is displaced as the fastener holder closes against the anvil assembly to ensure that the proper minimum distance is achieved between the fastener holder and the anvil assembly.
Claim 12
Dependent Claim
115 words
A surgical fastener cartridge comprising an anvil assembly having an aperture therein; a fastener holder pivotally connected at one end to said anvil assembly; an alignment pin mounted on said fastener holder at an opposite end thereof for reception in said aperture of said anvil assembly, said pin having a shaped end for piercing tissue disposed between said anvil assembly and said holder and over said opening of said anvil assembly; and a spacer member mounted on said opposite end of said fastener for abutting said anvil assembly about said opening therein, said spacer member having surfaces shaped to displace the tissue pierced by said pin during pivoting of said holder towards said anvil assembly.
Claim 13
Dependent Claim
115 words
A surgical fastener cartridge comprising an anvil assembly having an aperture therein; a fastener holder pivotally connected at one end to said anvil assembly; an alignment pin mounted on said fastener holder at an opposite end thereof for reception in said aperture of said anvil assembly, said pin having a shaped end for piercing tissue disposed between said anvil assembly and said holder and over said opening of said anvil assembly; and a spacer member mounted on said opposite end of said fastener for abutting said anvil assembly about said opening therein, said spacer member having surfaces shaped to displace the tissue pierced by said pin during pivoting of said holder towards said anvil assembly.
Claim 14
Dependent Claim
16 words
A surgical fastener cartridge as set forth in claim 10 wherein said pin end is conically-shaped.
Claim 15
Dependent Claim
24 words
A surgical fastener cartridge as set forth in claim 10 wherein said surfaces of said spacer member form a knife-like edge to displace tissue.
Claim 16
Dependent Claim
112 words
In combination, an anvil assembly having an aperture therein; a fastener holder movably mounted relative to said anvil assembly; an alignment pin mounted on said fastener holder at an opposite end thereof for reception in said aperture of said anvil assembly, said pin having a shaped end for piercing tissue disposed between said anvil assembly and said holder and over said opening of said anvil assembly; and a spacer member mounted on said opposite end of said fastener for abutting said anvil assembly about said opening therein, said spacer member having surfaces shaped to displace the tissue pierced by said pin during movement of said holder and anvil assembly towards each other.
Claim 17
Dependent Claim
112 words
In combination, an anvil assembly having an aperture therein; a fastener holder movably mounted relative to said anvil assembly; an alignment pin mounted on said fastener holder at an opposite end thereof for reception in said aperture of said anvil assembly, said pin having a shaped end for piercing tissue disposed between said anvil assembly and said holder and over said opening of said anvil assembly; and a spacer member mounted on said opposite end of said fastener for abutting said anvil assembly about said opening therein, said spacer member having surfaces shaped to displace the tissue pierced by said pin during movement of said holder and anvil assembly towards each other.
Claim 18
Dependent Claim
27 words
The combination as set forth in claim 13 which further comprises means for moving said pin end from said holder into said aperture of said anvil assembly.
Claim 19
Dependent Claim
14 words
The combination as set forth in claim 14 wherein said pin end is conically-shaped.
Claim 20
Dependent Claim
22 words
The combination as set forth in claim 14 wherein said surfaces of said spacer member form a knife-like edge to displace tissue.
References Cited (Backward Citations)
SU209629A1
Cited
DE869527C
Cited
US3080564A
Cited
US3079606A
Cited
GB906791A
Cited
US3175556A
Cited
CA736256A
Cited
US3252643A
Cited
US3317105A
Cited
US3269630A
Cited
US3275211A
Cited
US3315863A
Cited
US3490675A
Cited
US3494533A
Cited
US3499591A
Cited
US3499591B1
Cited
US3589589A
Cited
US3665924A
Cited
US3692224A
Cited
SU371926A1
Cited
US3795034A
Cited
US3949923A
Cited
US3935981A
Cited
US3889683A
Cited
SU549145A1
Cited
US4047654A
Cited
US4086926A
Cited
US4244372A
Cited
US4290542A
Cited
US4216891A
Cited
US4272002A
Cited
US4397311A
Cited
US4429695A
Cited
US4485811A
Cited
US4296881A
Cited
US4378901A
Cited
US4354628A
Cited
US4402444A
Cited
US4383634A
Cited
USD271714S
Cited
USD271796S
Cited
US4415112A
Cited
US4506671A
Cited
US4506670A
Cited
US4508253A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-05-18 | 1990-11-17 | 1991-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-05-18 | 1994-11-17 | 1995-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-05-18 | 1998-11-17 | 1999-05-19 | $7700.00 | Window Closed / Lapsed |