US5961521A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surgical screw and washer
Assignee: Smith and Nephew Inc
•
Filing: 1998-02-13
•
Granted: 1999-10-05
•
Expires: 2018-02-13
Abstract
Abstract A surgical fastener for fixation of graft tendon in a bone hole comprising a screw having a head, neck, and shank, and a washer disposed about the neck. The tendon is attached to the washer so as to ensure that the tendon is immobilised between the head of the screw and the wall of the bone hole thereby reducing pistoning under load and reducing graft failure. In one embodiment, the fastener includes a bone plug disposed about the neck of the screw between the head and the washer, the neck being adapted to laterally press the bone plug and thereby immobilise a tendon attached to the washer between the bone plug and the wall of the bone hole. In another embodiment, the invention consists in a surgical staple having two substantially parallel legs, a transverse head member and a washer which holds a loop of tendon under the staple when it is inserted into a bone.
Inventors
- 👤 Gregory James Roger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:29
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/08; A61F2/0811; A61B; A61B17/00; A61B17/064; A61B17/0642; A61B17/56; A61B17/58; A61B17/68; A61B17/84; A61B17/86; A61B17/8695; A61B17/04; A61B17/0401; A61B2017/0403; A61B2017/0414; A61B2017/044; A61B2017/0446; A61B2017/0448; A61B2017/0647; A61B2017/0648; A61F2/0805; A61F2002/0817; A61F2002/0823; A61F2002/0829; A61F2002/0835; A61F2002/0841; A61F2002/0847; A61F2002/0858; A61F2002/0864; A61F2002/087; A61F2002/0876; A61F2002/0882; A61F2002/0888; Y; Y10; Y10S; Y10S606/00; Y10S606/916
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
93 words
A surgical fastener, the fastener being a surgical staple for attaching a graft tendon to a bone, the surgical staple comprising two substantially parallel legs interconnected by a transverse head member, each leg having a free end portion connected substantially at a right angle to a head portion connected to the transverse head member, such that the transverse head member is laterally displaced from a plane defined by the free end portions, the fastener further comprising a washer disposed around the free end portions proximate the right angle connections with the head portions.
Claim 2
Dependent Claim
93 words
A surgical fastener, the fastener being a surgical staple for attaching a graft tendon to a bone, the surgical staple comprising two substantially parallel legs interconnected by a transverse head member, each leg having a free end portion connected substantially at a right angle to a head portion connected to the transverse head member, such that the transverse head member is laterally displaced from a plane defined by the free end portions, the fastener further comprising a washer disposed around the free end portions proximate the right angle connections with the head portions.
Claim 3
Dependent Claim
35 words
The surgical fastener of claim 1 wherein the surgical staple has two parallel legs, each leg of the same length and having a free end portion connected at a right angle to a head portion.
Claim 4
Dependent Claim
26 words
The surgical fastener of claim 1 wherein the transverse head member interconnecting the two head portions is canted downwardly from the plane of the head portions.
Claim 5
Dependent Claim
24 words
The surgical fastener of any one of claim 1 wherein the surgical staple is comprised of one linear member folded to the required shape.
Claim 6
Dependent Claim
54 words
The surgical fastener of claim 4 wherein the linear member is a wire with the free end portions having a sharp arrow tip to facilitate insertion of the staple into the bone and the portions of the wire likely to come into contact with the tendon are rounded to prevent damage to the tendon.
Claim 7
Dependent Claim
37 words
The surgical fastener of any one of claim 1 wherein the washer is oval in shape with rounded edges to prevent damage of the graft tendon and has two holes laterally displaced for each of the legs.
Claim 8
Independent Claim
191 words
A method for attaching a loop of tendon to a bone using a surgical fastener comprising a staple comprising two substantially parallel legs interconnected by a transverse head member, each leg having a free end portion connected substantially at a right angle to a head portion connected to the transverse head member, such that the transverse head member is laterally displaced from a plane defined by the free end portions, the fastener further comprising a washer disposed around the free end portions proximate the right angle connection with the head portions, the method comprising the steps of: (a) positioning the washer through the loop of the tendon; (b) inserting the free end portions of the legs through the washer so as to position the loop of tendon within the staple; and (c) inserting the staple into the bone such that the tendon is firmly secured to the bone both under the washer and under the laterally displaced head member, such that any tilting of the staple under load will serve to press the head member more firmly onto the tendon thereby ameliorating loosening of the tendon and staple from the bone.
Claim 9
Independent Claim
191 words
A method for attaching a loop of tendon to a bone using a surgical fastener comprising a staple comprising two substantially parallel legs interconnected by a transverse head member, each leg having a free end portion connected substantially at a right angle to a head portion connected to the transverse head member, such that the transverse head member is laterally displaced from a plane defined by the free end portions, the fastener further comprising a washer disposed around the free end portions proximate the right angle connection with the head portions, the method comprising the steps of: (a) positioning the washer through the loop of the tendon; (b) inserting the free end portions of the legs through the washer so as to position the loop of tendon within the staple; and (c) inserting the staple into the bone such that the tendon is firmly secured to the bone both under the washer and under the laterally displaced head member, such that any tilting of the staple under load will serve to press the head member more firmly onto the tendon thereby ameliorating loosening of the tendon and staple from the bone.
Claim 10
Dependent Claim
23 words
The method of claim 7 wherein the staple is inserted into the bone at the required site using an appropriate hammer like tool.
Claim 11
Dependent Claim
187 words
A surgical staple for attaching a graft tendon to a bone, the surgical staple comprising: a first leg comprising a first free end portion and a first head portion, wherein the first free end portion is connected to the first head portion at a substantially right angle; a second leg comprising a second free end portion and a second head portion, wherein the second free end portion is connected to the second head portion at a substantially right angle; a transverse head member having a first end and a second end, wherein the first end is connected to an end of the first head portion remote from the first free end portion at a substantially right angle and the second end is connected to an end of the second head portion remote from the second free end portion at a substantially right angle; and a washer disposed around the free end portions proximate the right angle connection with the head portions, wherein the first and second legs are substantially parallel and the transverse head member is laterally displaced from a plane defined by the free end portions.
Claim 12
Dependent Claim
187 words
A surgical staple for attaching a graft tendon to a bone, the surgical staple comprising: a first leg comprising a first free end portion and a first head portion, wherein the first free end portion is connected to the first head portion at a substantially right angle; a second leg comprising a second free end portion and a second head portion, wherein the second free end portion is connected to the second head portion at a substantially right angle; a transverse head member having a first end and a second end, wherein the first end is connected to an end of the first head portion remote from the first free end portion at a substantially right angle and the second end is connected to an end of the second head portion remote from the second free end portion at a substantially right angle; and a washer disposed around the free end portions proximate the right angle connection with the head portions, wherein the first and second legs are substantially parallel and the transverse head member is laterally displaced from a plane defined by the free end portions.
Claim 13
Dependent Claim
35 words
The surgical staple of claim 9, wherein the surgical staple has two parallel legs, each leg of the same length and having the free end portion connected at a right angle to the head portion.
Claim 14
Dependent Claim
27 words
The surgical staple of claim 9, wherein the transverse head member interconnecting the two head portions is canted downwardly from a plane defined by the head portions.
Claim 15
Dependent Claim
19 words
The surgical staple of claim 9, wherein the surgical staple comprises one linear member folded to the required shape.
Claim 16
Dependent Claim
53 words
The surgical staple of claim 12, wherein the linear member is a wire with the free end portions having sharp arrow tip to facilitate insertion of the staple into the bone and the portions of the wire likely to come into contact with the tendon being rounded to prevent damage to the tendon.
Claim 17
Dependent Claim
34 words
The surgical staple of claim 9, wherein the washer is oval in shape with rounded edges to prevent damage of the graft tendon and has two holes laterally displaced for each of the legs.
References Cited (Backward Citations)
AU1461528A
Cited
US2242003A
Cited
US2267925A
Cited
DE2529669A1
Cited
DE2747312A1
Cited
DE2818254A1
Cited
US4463753A
Cited
US4537185A
Cited
EP0172130A2
Cited
US5084050A
Cited
US4744793A
Cited
US4775380A
Cited
EP0241792A1
Cited
EP0260970A2
Cited
US4772286A
Cited
EP0282789B1
Cited
FR2622790A1
Cited
EP0317406A1
Cited
US4828562A
Cited
WO1989009030A1
Cited
WO1990000370A1
Cited
EP0374088A1
Cited
US4870957A
Cited
US4988351A
Cited
US4950270A
Cited
WO1990008510A1
Cited
US4927421A
Cited
AU5999990A
Cited
US5246441A
Cited
US5129906A
Cited
US5209753A
Cited
FR2655840A1
Cited
US5285040A
Cited
US5139520A
Cited
EP0451932A1
Cited
US5129902A
Cited
US5383878A
Cited
WO1992003980A1
Cited
US5470334A
Cited
US5116337A
Cited
DE4127550A1
Cited
JPH05300917A
Cited
US5281422A
Cited
US5211647A
Cited
FR2687911A1
Cited
FR2688689A1
Cited
FR2704140A3
Cited
US5443509A
Cited
US5632748A
Cited
US5454811A
Cited
US5443468A
Cited
US5456685A
Cited
US5674224A
Cited
US5628766A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-10-04 | 2003-04-05 | 2003-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-10-04 | 2007-04-05 | 2007-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-10-04 | 2011-04-05 | 2011-10-05 | $7700.00 | Window Closed / Lapsed |