US4657548A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Delivery system for implantation of fine particles in surgical procedures
Assignee: COLLA-TEC Inc A CORP OF DE
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Filing: 1986-05-01
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Granted: 1987-04-14
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Expires: 2006-05-01
Abstract
Abstract A delivery system for implantation of fine particles in surgical procedures made of a collagen tube filled with the fine particles, the tube being made of a cast collagen film having holes in it larger than the size of the particles to allow cell migration. The system is particularly useful for alveolar ridge augmentation.
Inventors
- 👤 Joseph Nichols
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:02
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/0012; A61K9/0019; A61K9/0024; A61C; A61C8/00; A61C8/0003; A61C8/0004; A61C8/0006; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/46; A61F2/4601; A61L; A61L27/00; A61L27/02; A61L27/12; A61L27/14; A61L27/22; A61L27/24; A61F2/28; A61F2310/00; A61F2310/00005; A61F2310/00179; A61F2310/00293; A61F2310/00365
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
53 words
A delivery system for implantation of fine particles in surgical procedures comprising a collagen tube or pouch filled with said particles, said collagen tube or pouch comprising a cast collagen film having a plurality of perforations therein, said perforations being larger than the size of said particles, said tube or pouch being sealed.
Claim 2
Dependent Claim
53 words
A delivery system for implantation of fine particles in surgical procedures comprising a collagen tube or pouch filled with said particles, said collagen tube or pouch comprising a cast collagen film having a plurality of perforations therein, said perforations being larger than the size of said particles, said tube or pouch being sealed.
Claim 3
Dependent Claim
34 words
A delivery system as claimed in claim 1, wherein said fine particles comprise a member of the group consisting of powdered or particulate hydroxylapatite, tricalcium phosphate, autogenous cancellous bone, demineralized bone, and mixtures thereof.
Claim 4
Dependent Claim
25 words
A delivery system as claimed in claim 2, wherein said fine particles have a particle size of from about 70 microns to about 850 microns.
Claim 5
Dependent Claim
38 words
A delivery system as claimed in claim 3, wherein said particles have a particle size in the range of about 400 microns to about 850 microns or in the range of about 250 microns to about 400 microns.
Claim 6
Dependent Claim
19 words
A delivery system as claimed in claim 3 or 4, wherein said perforations are at least about 100 microns.
Claim 7
Dependent Claim
20 words
A delivery system as claimed in claim 5, wherein said perforations are from about 100 microns to about 1,000 microns.
Claim 8
Dependent Claim
15 words
A delivery system as claimed in claim 6, wherein said perforations are about 500 microns.
Claim 9
Dependent Claim
20 words
A delivery system as claimed in claim 1, wherein said collagen tube or pouch is a tube and is crimped.
Claim 10
Dependent Claim
15 words
A delivery system as claimed in claim 1 or 5, wherein said collagen is cross-linked.
Claim 11
Independent Claim
95 words
A method of augmenting the alveolar ridge comprising making an incision in a predetermined location in the area of the alveolar ridge, inserting a delivery system which comprises a collagen tube filled with particles of hydroxylapatite, tricalcium phosphate, autogenous cancellous bone, demineralized bone, or mixtures thereof, having a particle size of from about 70 microns to about 850 microns, said collagen tube being made of a cast collagen film and having a plurality of perforations of at least about 150 microns in size and larger than the size of said particles, and closing said incision.
Claim 12
Independent Claim
95 words
A method of augmenting the alveolar ridge comprising making an incision in a predetermined location in the area of the alveolar ridge, inserting a delivery system which comprises a collagen tube filled with particles of hydroxylapatite, tricalcium phosphate, autogenous cancellous bone, demineralized bone, or mixtures thereof, having a particle size of from about 70 microns to about 850 microns, said collagen tube being made of a cast collagen film and having a plurality of perforations of at least about 150 microns in size and larger than the size of said particles, and closing said incision.
Claim 13
Independent Claim
55 words
A method of making a delivery system, for implantation of fine particles in surgical procedures comprising casting a collagen film tube or pouch, making a plurality of perforations of a size larger than the particle size of said fine particles, in said tube or pouch, and filling said tube or pouch with said fine particles.
Claim 14
Independent Claim
55 words
A method of making a delivery system, for implantation of fine particles in surgical procedures comprising casting a collagen film tube or pouch, making a plurality of perforations of a size larger than the particle size of said fine particles, in said tube or pouch, and filling said tube or pouch with said fine particles.
Claim 15
Dependent Claim
29 words
A method as claimed in claim 11, wherein said particle size is from about 70 to about 850 microns and said perforations are about 100 to about 1,000 microns.
Claim 16
Dependent Claim
35 words
A method as claimed in claim 11, wherein said cast collagen film tube or pouch is made by pouring a dispersion of collagen over a revolving mandrel while, simultaneously, precipitating said collagen from the dispersion.
References Cited (Backward Citations)
US4097935A
Cited
US4430760A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-04-13 | 1990-10-13 | 1991-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-04-13 | 1994-10-13 | 1995-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-04-13 | 1998-10-13 | 1999-04-14 | $7700.00 | Window Closed / Lapsed |