US4620541A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Annealed polydioxanone surgical device having a resilient portion and an interlocking portion and method for producing the same
Assignee: Ethicon Inc
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Filing: 1985-08-02
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Granted: 1986-11-04
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Expires: 2005-08-02
Abstract
Abstract Thermally formed annealed surgical devices made from unoriented polymers of p-dioxanone and methods for manufacturing the same. The preferred device is a ligating clip having good in vivo performance characteristics. The method includes initially drying the thermally formed device followed by heating the device without restraint at specific temperatures for specific time periods.
Inventors
- 👤 Arthur A. Gertzman
- 👤 Darrell R. Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:43
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/66; C08G63/664; A; A61; A61L; A61L17/00; A61L17/06; A61L17/10; A61L17/105; A61L17/14; A61L31/00; A61L31/04; A61L31/06
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
74 words
A thermally formed, substantialy unoriented, annealed surgical device, said device having a resilient portion which provides the device with tactile properties and an interengaging portion which provides the device with audible properties, said device made of a polymer prepared from a monomer having the formula ##STR3## said device having a density of at least 1.3845 grams per cubic centimeter, a crystallanity of at least 43% and said device having improved audible and tactile properties.
Claim 2
Dependent Claim
74 words
A thermally formed, substantialy unoriented, annealed surgical device, said device having a resilient portion which provides the device with tactile properties and an interengaging portion which provides the device with audible properties, said device made of a polymer prepared from a monomer having the formula ##STR3## said device having a density of at least 1.3845 grams per cubic centimeter, a crystallanity of at least 43% and said device having improved audible and tactile properties.
Claim 3
Dependent Claim
82 words
A thermally formed, substantially unoriented, annealed surgical device, said device having a resilient portion which provides the device with tactile properties and an interengaging portion which provides the device with audible properties, said device made from a polymer having units of the formula: ##STR4## wherein x is the degree of polymerization resulting in a thermally formable device, said device having a density of at least 1.3845 grams per cubic centimeter, a crystallinity of at least 43%, and improved audible and tactile properties.
Claim 4
Dependent Claim
82 words
A thermally formed, substantially unoriented, annealed surgical device, said device having a resilient portion which provides the device with tactile properties and an interengaging portion which provides the device with audible properties, said device made from a polymer having units of the formula: ##STR4## wherein x is the degree of polymerization resulting in a thermally formable device, said device having a density of at least 1.3845 grams per cubic centimeter, a crystallinity of at least 43%, and improved audible and tactile properties.
Claim 5
Dependent Claim
15 words
A device according to claim 1 or 2 having a crystallinity of at least 45%.
Claim 6
Dependent Claim
15 words
A device according to claim 1 or 2 wherein the device is a ligating clip.
Claim 7
Dependent Claim
21 words
The ligating clip of claim 4 comprising a pair of leg members connected at their proximal ends by a hinge section.
Claim 8
Dependent Claim
17 words
The ligating clip of claim 5 wherein the distal ends of the leg members include latching means.
Claim 9
Dependent Claim
17 words
The thermally formed device of claim 1 or 2 wherein the device is an injection molded device.
Claim 10
Dependent Claim
14 words
The ligating clip of claim 5 wherein the clip is an injection molded clip.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-11-03 | 1990-05-05 | 1990-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-11-03 | 1994-05-05 | 1994-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-11-03 | 1998-05-05 | 1998-11-04 | $7700.00 | Window Closed / Lapsed |