Patent US5476480A successfully refreshed from Google Patents.
US5476480A
Expired / Lapsed
US
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Surgical needle and apparatus for grinding the same
Assignee: Mani Inc
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Filing: 1994-02-15
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Granted: 1995-12-19
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Expires: 2014-02-15
Abstract
Abstract A surgical needle for sutural treatment having a triangle or polygon body in cross section, including a blunt needle point with a plate or round end and at least two cutting edges to prevent a health care provider from mistakenly hurting themselves even if the needle comes into contact with the tissue of the health care provide, and to provide a property that enables the needle to pass smoothly through tissues. A first face of the body may be ground by a grinding apparatus specially made for the surgical needle to form a tapered slope and the cutting edges. By pressing a material piece of the needle in a V-shaped groove it forms a second and third face and readily produces a high quality surgical needle.
Inventors
- 👤 Kanji Matsutani
- 👤 Hiroshi Yagisawa
- 👤 Akira Saitoh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:52
CPC Classifications
B; B24; B24B; B24B19/00; B24B19/16; A; A61; A61B; A61B17/00; A61B17/04; A61B17/06; A61B17/06066; B21; B21G; B21G1/00; A61B17/06004; A61B2017/06085; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2002/30001; A61F2002/30108; A61F2002/3011; A61F2002/30138; A61F2002/30156; A61F2002/30158; A61F2230/00; A61F2230/0002; A61F2230/0017; A61F2230/0023; A61F2230/0026
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
89 words
A surgical needle having a triangular cross section at a body thereof, said surgical needle comprising: a face tapered along a longitudinal direction of said body so that said body has thinner thickness on a tip side thereof than on the opposite side; a pair of cutting edges provided at opposite sides of said face in a longitudinal direction of said body; and a blunt edge provided in opposition to said face, said blunt edge expanding to a needle point so that said surgical needle has no sharp point.
Claim 2
Dependent Claim
89 words
A surgical needle having a triangular cross section at a body thereof, said surgical needle comprising: a face tapered along a longitudinal direction of said body so that said body has thinner thickness on a tip side thereof than on the opposite side; a pair of cutting edges provided at opposite sides of said face in a longitudinal direction of said body; and a blunt edge provided in opposition to said face, said blunt edge expanding to a needle point so that said surgical needle has no sharp point.
Claim 3
Dependent Claim
21 words
A surgical needle as set forth in claim 1, wherein at said needle point said cutting edges are spaced a part.
Claim 4
Dependent Claim
23 words
A surgical needle as set forth in claim 1, wherein said face is ground in a transverse direction perpendicular to said longitudinal direction.
Claim 5
Dependent Claim
14 words
A surgical needle as set forth in claim 1, wherein said body has curvature.
Claim 6
Dependent Claim
14 words
A surgical needle as set forth in claim 1, wherein said body is straight.
Claim 7
Dependent Claim
27 words
A surgical needle as set forth in claim 1, wherein said face is formed by grinding and other faces of the surgical needle are formed by press.
Claim 8
Dependent Claim
35 words
A surgical needle as set forth in claim 1, wherein said needle point has a contact area for contacting tissues, said contact area providing a predetermined resistance against entry of said needle into said tissue.
Claim 9
Dependent Claim
23 words
A surgical needle as set forth in claim 2, wherein said face is ground in a transverse direction perpendicular to said longitudinal direction.
Claim 10
Dependent Claim
91 words
A surgical needle having a polygonal cross section at a body thereof, said surgical needle comprising: a first face tapered along a longitudinal direction of said body so that said body has thinner thickness on a tip side thereof than on the opposite side; a pair of cutting edges provided at opposite sides of said first face in a longitudinal direction of said body; a second face provided in opposition to said first face; and a needle point formed in a plate shape by and between said first and second faces.
Claim 11
Dependent Claim
91 words
A surgical needle having a polygonal cross section at a body thereof, said surgical needle comprising: a first face tapered along a longitudinal direction of said body so that said body has thinner thickness on a tip side thereof than on the opposite side; a pair of cutting edges provided at opposite sides of said first face in a longitudinal direction of said body; a second face provided in opposition to said first face; and a needle point formed in a plate shape by and between said first and second faces.
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) | 1998-12-18 | 1999-06-19 | 1999-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-12-18 | 2003-06-19 | 2003-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-12-18 | 2007-06-19 | 2007-12-19 | $7700.00 | Window Closed / Lapsed |