US4863469A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for expanding nerve tissue
Assignee: PMT Corp USA
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Filing: 1987-10-20
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Granted: 1989-09-05
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Expires: 2007-10-20
Abstract
Abstract A nerve expander used in plastic reconstruction surgery for lengthening damaged nerves which facilitates reattachment of damaged nerves to facilitate nerve operation and function after reconstruction. One or more saddles on an inflatable expansion member positionally accommodates a nerve in a saddle trough. The nerve expander with the saddle mounted nerve is subsequently inflated with saline solution injected into a self-sealing injection port causing the inflatable expansion member to expand and the nerve thereabout to be stretched and lengthened.
Inventors
- 👤 Allen L. VanBeek
- 👤 Alfred A. Iversen
- 👤 William J. Eastman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:22
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/11; A61B17/1128; A61B90/00; A61B90/02
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
156 words
An inflatable low profile nerve tissue expander comprising: a. an inflatable expansion member of substantially flat geometrical configuration for receiving fluid to expand said member, b. a self-sealing injection port with a connecting tube of a finite length connected to said inflatable expansion member for passing the fluid for inflating said member; c. at least one saddle including a partially cylindrical shaped trough in said saddle positioned on a top surface of said inflatable expansion member; and, d. means for securing a nerve in said saddle, said means including a nerve securement strap affixed to one side of said trough and securable to the other side of said trough whereby said saddle accommodates nerve tissue to capture said nerve tissue about the surface area of said saddle for lengthening said nerve tissue on expansion, and said inflatable injection port and said connecting tube are surgically placed under an individual's skin adjacent the nerve to be expanded.
Claim 2
Dependent Claim
156 words
An inflatable low profile nerve tissue expander comprising: a. an inflatable expansion member of substantially flat geometrical configuration for receiving fluid to expand said member, b. a self-sealing injection port with a connecting tube of a finite length connected to said inflatable expansion member for passing the fluid for inflating said member; c. at least one saddle including a partially cylindrical shaped trough in said saddle positioned on a top surface of said inflatable expansion member; and, d. means for securing a nerve in said saddle, said means including a nerve securement strap affixed to one side of said trough and securable to the other side of said trough whereby said saddle accommodates nerve tissue to capture said nerve tissue about the surface area of said saddle for lengthening said nerve tissue on expansion, and said inflatable injection port and said connecting tube are surgically placed under an individual's skin adjacent the nerve to be expanded.
Claim 3
Dependent Claim
18 words
Expander of claim 1 including two saddles spaced with respect to each other on said inflatable expansion member.
Claim 4
Dependent Claim
20 words
Expander of claim 1 including a substantially rigid and malleable backing in a back side of said inflatable expansion member.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-09-04 | 1993-03-06 | 1993-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-09-04 | 1997-03-06 | 1997-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-09-04 | 2001-03-06 | 2001-09-05 | $7700.00 | Window Closed / Lapsed |