US5752644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disposable loading unit for surgical stapler
Assignee: United States Surgical Corp
•
Filing: 1995-07-11
•
Granted: 1998-05-19
•
Expires: 2015-07-11
Abstract
Abstract A disposable loading unit is disclosed for use in conjunction with a surgical stapling apparatus configured to sequentially apply a plurality of surgical fasteners to body tissue. The apparatus includes an actuation assembly for effectuating a fastener applying operation, and a housing for receiving and releasably supporting the disposable loading unit. The disposable loading unit includes a staple cartridge body having a longitudinal pathway extending therethrough and a plurality of spaced apart retention slots defined therein each supporting a respective surgical fastener, a plurality of fastener ejection members disposed adjacent the plurality of spaced apart retention slots and communicating with the longitudinal pathway, and an actuator supported within the staple cartridge body and configured to engage the actuation assembly of the apparatus and translate through the longitudinal pathway to contact the fastener ejection members and thereby sequentially eject the surgical fasteners from their respective retention slots.
Inventors
- 👤 Henry Bolanos
- 👤 Alli Alim
- 👤 Richard C. McClure
- 👤 Keith L. Milliman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:10
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/068; A61B17/072; A61B17/07207; A61B17/32; A61B17/320016; A61B2017/0023; A61B2017/07214; A61B2017/07278; A61B2017/07285; A61B17/3209; A61B17/3211; A61B2017/32113
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
250 words
A disposable loading unit for a surgical stapling apparatus comprising: a) a staple cartridge body having a longitudinal pathway extending therethrough and a plurality of spaced apart retention slots defined therein each supporting a respective surgical fastener; b) a plurality of fastener ejection members disposed adjacent the plurality of spaced apart retention slots and communicating with the longitudinal pathway; c) an actuator at least partially disposed within the staple cartridge body and configured to translate through the longitudinal pathway to contact the fastener ejection members and thereby sequentially eject the surgical fasteners from their respective retention slots, the actuator including a base portion defining a plane and having at least two upstanding parallel cam plates each defining an angled leading edge for contacting the fastener ejection members; and d) a cutting member configured to translate through the staple cartridge body, the cutting member having a flange configured to receive a shank extending from a central section of the base portion of the actuator, the flange including a camming surface configured to interact with an abutment surface defined within a distal end portion of the staple cartridge body; wherein the staple cartridge body defines a planar tissue contacting surface through which extends a linear slot to accommodate translation of the cutting member, the cutting member intersecting the tissue contacting plane during the translation thereof, and moving out of intersection with the tissue contacting plane when the camming surface of the cutting member contacts the abutment surface of the staple cartridge body.
Claim 2
Dependent Claim
250 words
A disposable loading unit for a surgical stapling apparatus comprising: a) a staple cartridge body having a longitudinal pathway extending therethrough and a plurality of spaced apart retention slots defined therein each supporting a respective surgical fastener; b) a plurality of fastener ejection members disposed adjacent the plurality of spaced apart retention slots and communicating with the longitudinal pathway; c) an actuator at least partially disposed within the staple cartridge body and configured to translate through the longitudinal pathway to contact the fastener ejection members and thereby sequentially eject the surgical fasteners from their respective retention slots, the actuator including a base portion defining a plane and having at least two upstanding parallel cam plates each defining an angled leading edge for contacting the fastener ejection members; and d) a cutting member configured to translate through the staple cartridge body, the cutting member having a flange configured to receive a shank extending from a central section of the base portion of the actuator, the flange including a camming surface configured to interact with an abutment surface defined within a distal end portion of the staple cartridge body; wherein the staple cartridge body defines a planar tissue contacting surface through which extends a linear slot to accommodate translation of the cutting member, the cutting member intersecting the tissue contacting plane during the translation thereof, and moving out of intersection with the tissue contacting plane when the camming surface of the cutting member contacts the abutment surface of the staple cartridge body.
Claim 3
Dependent Claim
28 words
A disposable loading unit as recited in claim 1, wherein the actuator includes a first pair of parallel cam plates and a second pair of parallel cam plates.
Claim 4
Dependent Claim
25 words
A disposable loading unit as recited in claim 2, wherein the first pair of cam plates is offset from the second pair of cam plates.
Claim 5
Dependent Claim
42 words
A disposable loading unit as recited in claim 1, wherein the base portion of the actuator is deflectable to facilitate movement of the cutting member when the camming surface of the cartridge member contacts the abutment surface of the staple cartridge body.
Claim 6
Dependent Claim
257 words
In combination, a disposable loading unit and a surgical stapling apparatus, the disposable loading unit comprising: a) a staple cartridge body having a longitudinal pathway extending therethrough and a plurality of spaced apart retention slots defined therein each supporting a respective surgical fastener; b) a plurality of fastener ejection members disposed adjacent the plurality of spaced apart retention slots and communicating with the longitudinal pathway; and c) an actuator at least partially disposed within the staple cartridge body and configured to translate through the longitudinal pathway to contact the fastener ejection members and thereby sequentially eject the surgical fasteners from their respective retention slots, the actuator including a base portion defining a plane and having at least two upstanding parallel cam plates each defining an angled leading edge for contacting the fastener ejection members; and d) a cutting member configured to translate through the staple cartridge body, the cutting member having a flange configured to receive a shank extending from a central section of the base portion of the actuator, the flange including a camming surface configured to interact with an abutment surface defined within a distal end portion of the staple cartridge body; wherein the staple cartridge body defines a planar tissue contacting surface through which extends a linear slot to accommodate translation of the cutting member, the cutting member intersecting the tissue contacting plane during the translation thereof, and moving out of intersection with the tissue contacting plane when the camming surface of the cutting member contacts the abutment surface of the staple cartridge body.
Claim 7
Dependent Claim
257 words
In combination, a disposable loading unit and a surgical stapling apparatus, the disposable loading unit comprising: a) a staple cartridge body having a longitudinal pathway extending therethrough and a plurality of spaced apart retention slots defined therein each supporting a respective surgical fastener; b) a plurality of fastener ejection members disposed adjacent the plurality of spaced apart retention slots and communicating with the longitudinal pathway; and c) an actuator at least partially disposed within the staple cartridge body and configured to translate through the longitudinal pathway to contact the fastener ejection members and thereby sequentially eject the surgical fasteners from their respective retention slots, the actuator including a base portion defining a plane and having at least two upstanding parallel cam plates each defining an angled leading edge for contacting the fastener ejection members; and d) a cutting member configured to translate through the staple cartridge body, the cutting member having a flange configured to receive a shank extending from a central section of the base portion of the actuator, the flange including a camming surface configured to interact with an abutment surface defined within a distal end portion of the staple cartridge body; wherein the staple cartridge body defines a planar tissue contacting surface through which extends a linear slot to accommodate translation of the cutting member, the cutting member intersecting the tissue contacting plane during the translation thereof, and moving out of intersection with the tissue contacting plane when the camming surface of the cutting member contacts the abutment surface of the staple cartridge body.
Claim 8
Dependent Claim
26 words
The combination as recited in claim 5, wherein the actuator includes a first pair of parallel cam plates and a second pair of parallel cam plates.
Claim 9
Dependent Claim
23 words
The combination as recited in claim 6, wherein the first pair of cam plates is offset from the second pair of cam plates.
Claim 10
Dependent Claim
40 words
The combination as recited in claim 5, wherein the base portion of the actuator is deflectable to facilitate movement of the cutting member when the camming surface of the cartridge member contacts the abutment surface of the staple cartridge body.
References Cited (Backward Citations)
US34519A
Cited
US944830A
Cited
US2476249A
Cited
US2737822A
Cited
US2885686A
Cited
US3060972A
Cited
US2975785A
Cited
US3079606A
Cited
US3071161A
Cited
US3090378A
Cited
US3190286A
Cited
US3162214A
Cited
US3335620A
Cited
US3256875A
Cited
US3270641A
Cited
US3490675A
Cited
US3557780A
Cited
US3499591A
Cited
US3499591B1
Cited
US3583393A
Cited
US3572325A
Cited
US3587872A
Cited
US3799151A
Cited
US3788303A
Cited
US3892228A
Cited
US3998216A
Cited
US4078555A
Cited
US4108211A
Cited
US4054128A
Cited
US4203430A
Cited
US4283165A
Cited
US4273111A
Cited
US4290421A
Cited
US4494417A
Cited
US4432349A
Cited
US4347837A
Cited
US4259876A
Cited
US4351323A
Cited
US4429695A
Cited
US4606343A
Cited
US4483326A
Cited
US4503842A
Cited
US4473077A
Cited
US4815911A
Cited
US4770185A
Cited
US4557254A
Cited
US4593679A
Cited
US4754909A
Cited
US4608981A
Cited
US4721099A
Cited
US4700693A
Cited
US4726355A
Cited
US4718407A
Cited
US4688555A
Cited
US4753223A
Cited
US4779612A
Cited
US4977790A
Cited
US4905666A
Cited
US4805596A
Cited
US4773395A
Cited
US4790294A
Cited
US4762118A
Cited
US4796607A
Cited
US4762119A
Cited
US4873965A
Cited
US4787369A
Cited
US4794912A
Cited
US4834069A
Cited
US5005558A
Cited
US5014685A
Cited
US5007406A
Cited
USRE34519E
Cited
US5174276A
Cited
US4947827A
Cited
US4911148A
Cited
US4919112A
Cited
US4919112B1
Cited
US4996974A
Cited
US5002041A
Cited
US4955959A
Cited
US5318221A
Cited
US5031814A
Cited
US5014515A
Cited
US5025804A
Cited
US5176126A
Cited
US5178129A
Cited
US5174277A
Cited
US5195968A
Cited
US5108819A
Cited
US5167221A
Cited
US5143475A
Cited
US5179935A
Cited
US5158086A
Cited
US5125395A
Cited
US5156315A
Cited
US5042707A
Cited
US5065929A
Cited
US5391180A
Cited
US5168864A
Cited
US5394864A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-05-18 | 2001-11-17 | 2002-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-05-18 | 2005-11-17 | 2006-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-05-18 | 2009-11-17 | 2010-05-19 | $7700.00 | Window Closed / Lapsed |