US4151838A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal mammary artery sternal retractor
Assignee: Individual
•
Filing: 1977-06-17
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Granted: 1979-05-01
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Expires: 1997-06-17
Abstract
Abstract An internal mammary artery sternal retractor suitable for use in human surgery is provided with a handle, an intermediate member which extends upwardly from the handle, a rake which extends perpendicular from the intermediate member and terminates in at least one curved tine, and a heel on the intermediate member which is positioned perpendicular to the intermediate member.
Inventors
- 👤 John R. Crew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:24
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/02
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
166 words
An internal mammary artery sternal retractor comprising: an elongated, substantially straight handle having two ends, an elongated substantially straight intermediate member having first and second ends, means for connecting one end of said handle to said first end of said intermediate member such that said handle forms an angle with said intermediate member of from 20° to 60°, an elongated substantially straight heel, means for connecting said heel to said intermediate member such that said heel is substantially perpendicular to the plane defined by said intermediate member and said handle, a substantially flat support member having first and second opposing edges, at least one curved tine being connected to said second edge of said support member, means for connecting said first edge of said support member to said second end of said intermediate member such that said second edge is further from said handle than said first edge, and said support member is both substantially perpendicular to said intermediate member and substantially parallel to said heel.
Claim 2
Dependent Claim
166 words
An internal mammary artery sternal retractor comprising: an elongated, substantially straight handle having two ends, an elongated substantially straight intermediate member having first and second ends, means for connecting one end of said handle to said first end of said intermediate member such that said handle forms an angle with said intermediate member of from 20° to 60°, an elongated substantially straight heel, means for connecting said heel to said intermediate member such that said heel is substantially perpendicular to the plane defined by said intermediate member and said handle, a substantially flat support member having first and second opposing edges, at least one curved tine being connected to said second edge of said support member, means for connecting said first edge of said support member to said second end of said intermediate member such that said second edge is further from said handle than said first edge, and said support member is both substantially perpendicular to said intermediate member and substantially parallel to said heel.
Claim 3
Dependent Claim
16 words
The internal mammary artery sternal retractor of claim 1 wherein the heel is tubular in shape.
Claim 4
Dependent Claim
16 words
The internal mammary artery sternal retractor of claim 2 wherein the heel is a hollow tube.
Claim 5
Dependent Claim
17 words
The internal mammary artery sternal retractor of claim 3 wherein the ends of the tube are closed.
Claim 6
Dependent Claim
25 words
The internal mammary artery sternal retractor of claim 1 wherein the intermediate member is connected to the heel at about the middle of the heel.
Claim 7
Dependent Claim
17 words
The internal mammary artery sternal retractor of claim 1 wherein the tine is curved toward the heel.
Claim 8
Dependent Claim
23 words
The internal mammary artery sternal retractor of claim 1 wherein the angle formed between said intermediate member and said handle is about 45°.
Claim 9
Dependent Claim
36 words
The internal mammary artery sternal retractor of claim 1 wherein the tine is adapted to fit over a split edge of a patient's sternum and the heel is adapted to fit over a patient's costo-chondral junction.
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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) | 1982-04-30 | 1982-10-30 | 1983-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-30 | 1986-10-30 | 1987-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-30 | 1990-10-30 | 1991-05-01 | $7700.00 | Window Closed / Lapsed |