US5895396A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surgical pins
Assignee: Ethicon Inc
•
Filing: 1996-06-14
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Granted: 1999-04-20
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Expires: 2016-06-14
Abstract
Abstract A pin for attaching a surgical membrane barrier to tissue structure of a patient comprises a pin body 1 formed from a sequence of four truncated cones which define a serrated profile which enables the pin to engage the membrane barrier and to be pushed-fitted into the tissue structure. The head portion 2 of the pin serves to engage the membrane barrier and retain it in position on the underlying tissue structure. The pin is made from a resorbable polymer, such as PDS Polydioxanone and is of substantially solid construction throughout. In an alternative embodiment, a circularly cylindrical extension is provided between the largest truncated cone and the pin head. The arrangement serves to maintain a spacing between the membrane barrier and the underlying tissue.
Inventors
- 👤 Ralph Paul Day
- 👤 Kenneth Robert Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:55
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/064; A61F; A61F2/00; A61F2/0063; A61B17/0642; A61B2017/00004; A61B2017/0647; A61B90/00; A61B90/08; A61B2090/0815; A61B2090/0816; Y; Y10; Y10S; Y10S606/00; Y10S606/907; Y10S606/908; Y10S606/91
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
68 words
A pin for attaching a surgical membrane barrier to a tissue structure of a patient, the pin being formed from a resorbable polymer and being of substantially solid construction throughout and having a profile which enables the pin to engage the membrane barrier wherein the profile is circumferentially continuous and to be push-fitted into the tissue structure, in combination with a said surgical membrane barrier for use therewith.
Claim 2
Dependent Claim
68 words
A pin for attaching a surgical membrane barrier to a tissue structure of a patient, the pin being formed from a resorbable polymer and being of substantially solid construction throughout and having a profile which enables the pin to engage the membrane barrier wherein the profile is circumferentially continuous and to be push-fitted into the tissue structure, in combination with a said surgical membrane barrier for use therewith.
Claim 3
Dependent Claim
18 words
A pin as claimed in claim 1, wherein said surgical membrane barrier is formed from a resorbable polymer.
Claim 4
Dependent Claim
12 words
A pin as claimed in claim 1, wherein the profile is tapered.
Claim 5
Dependent Claim
12 words
A pin as claimed in claim 1, wherein the profile is serrated.
Claim 6
Dependent Claim
14 words
A pin as claimed in claim 1, wherein said sequence comprises four truncated cones.
Claim 7
Dependent Claim
17 words
A pin as claimed in claim 1, wherein the radial cross-section of said cones is substantially circular.
Claim 8
Dependent Claim
22 words
A pin as claimed in claim 1, wherein the angle of each cone is in the range 67.5 degrees to 75 degrees.
Claim 9
Dependent Claim
14 words
A pin as claimed in claim 7, wherein said angle is substantially 70.6 degrees.
Claim 10
Dependent Claim
22 words
A pin as claimed in claim 1, wherein the profile extends axially over a length of between 2 mm and 10 mm.
Claim 11
Dependent Claim
14 words
A pin as claimed in claim 9, wherein said length is substantially 4.0 mm.
Claim 12
Dependent Claim
20 words
A pin as claimed in claim 1, comprising a head and a spacer portion between said head and said profile.
Claim 13
Dependent Claim
22 words
A pin as claimed in claim 11, wherein said spacer portion has an axial length of between 2 mm and 5 mm.
Claim 14
Dependent Claim
19 words
A pin as claimed in claim 12, wherein said axial length of said spacer portion is substantially 2.0 mm.
Claim 15
Dependent Claim
14 words
A pin as claimed in claim 1, and having a substantially circular radial cross-section.
Claim 16
Dependent Claim
19 words
A pin as claimed in claim 14 and having a minimum diameter of between 0.5 mm and 2.0 mm.
Claim 17
Dependent Claim
16 words
A pin as claimed in claim 15, and having a minimum diameter of substantially 0.5 mm.
Claim 18
Dependent Claim
19 words
A pin as claimed in claim 14, and having a maximum diameter of between 2 mm and 10 mm.
Claim 19
Dependent Claim
16 words
A pin as claimed in claim 17 and having a maximum diameter of substantially 3.0 mm.
Claim 20
Dependent Claim
14 words
A pin as claimed in claim 1 and made from a polymer of p-dioxanone.
Claim 21
Dependent Claim
13 words
A pin as claimed in claim 19 and made from PDS Polydioxanone (R.T.M).
Claim 22
Dependent Claim
15 words
A pin as claimed in claim 1 and made from a polymer of poly oxy(1-oxoethylene)oxyethylene!.
Claim 23
Dependent Claim
13 words
A pin as claimed in claim 21 and made from PDS Polydioxanone (R.T.M).
Claim 24
Dependent Claim
14 words
A pin as claimed in claim 21 and made from Vicryl Polyglactin 910 (R.T.M.).
Claim 25
Dependent Claim
17 words
A pin as claimed in claim 1 and made from a copolymer of glycolide with L(-) lactide.
References Cited (Backward Citations)
WO1985003857A1
Cited
WO1989001767A1
Cited
EP0548998A1
Cited
WO1992006638A1
Cited
EP0485744A1
Cited
EP0531742A1
Cited
US5350387A
Cited
US5333624A
Cited
US5236438A
Cited
US5492452A
Cited
EP0632999A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-04-19 | 2002-10-19 | 2003-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-04-19 | 2006-10-19 | 2007-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-04-19 | 2010-10-19 | 2011-04-20 | $7700.00 | Window Closed / Lapsed |