US4949707A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Retractor apparatus
Assignee: Minnesota Scientific Inc
•
Filing: 1988-01-11
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Granted: 1990-08-21
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Expires: 2008-01-11
Abstract
Abstract A retractor apparatus includes an extension rod, first and second support rods and first and second clamps. The extension rod is attached to the first support rod with the first clamp. The first support rod is attached to the second support rod with the second clamp. The first and second support rods extend outwardly over the surgical table on opposite sides of the incision and the second support rod may be moved relative to the first support rod so as to correctly position the retractors over the incision.
Inventors
- 👤 Bruce A. LeVahn
- 👤 Robert E. Olson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:07
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/02; A61B17/0206; A61B90/00; A61B90/50
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
569 words
A retractor apparatus for attaching a retractor thereto, the apparatus comprising: a first support rod with a first end portion; a second support rod with a second end portion; an extension rod with a third end portion; a first clamping means for connecting the third end portion of the extension rod to the first end portion at a first position of the first support rod, the first clamping means having both a base means portion and a first clamping section and a first force means wherein the base means portion has a first pivot bore extending therethrough with the third end portion of the extension rod attached to the base means portion wherein the base means portion has a frusto-conical section extending outwardly, the first clamping section having a first unitary body with a second pivot bore extending therethrough and a first clamping bore extending therethrough proximate one end of the first body and a slot running through the first body from the first clamping bore to an opposite end of the first body, separating the first body into first and second resilient leg portions such that when the first force means is applied to the first and second leg portions the diameter of the first clamping bore is reduced, thereby frictionally clamping the first end portion of the first support rod, the first clamping section having a frusto-conical recess such that the base means portion and the first clamping section are joined together in a frictional engagement by inserting the frusto-conical section of the base means portion into the frusto-conical recess of the first clamping section; a second means for connecting the first end portion at a second position of the first support rod to the second end portion of the second support rod, the second clamping means having both a second clamping section and a third clamping section and a second force means wherein the second clamping section has a second unitary body with a third pivot bore extending therethrough and a second clamping bore extending therethrough proximate one end of the second body and a slot running through the second body from the second clamping bore to an opposite end of the second body, separating the second body into third and fourth resilient leg portions such that when said second force means is applied to the leg third and fourth portions the diameter of the second clamping bore is reduced thereby frictionally clamping the first end portion of the first support rod, the second clamping section having a frusto-conical section extending outwardly; the third clamping section having a third unitary body with a fourth pivot bore extending therethrough and a third clamping bore extending therethrough proximate one end of the third body and a slot running through the third body from the third clamping bore to an opposite end of the third body, separating the third body into fifth and sixth resilient leg portions such that when said second force means is applied to the fifth and sixth leg portions the diameter of the third clamping bore is reduced, thereby frictionally clamping the second end portion of the second support rod, the third clamping section having a frusto-conical recess such that the second clamping section and the third clamping section are joined together in a frictional engagement by inserting the frusto-conical section of the second clamping section into the frusto-conical recess of the third clamping section.
Claim 2
Dependent Claim
569 words
A retractor apparatus for attaching a retractor thereto, the apparatus comprising: a first support rod with a first end portion; a second support rod with a second end portion; an extension rod with a third end portion; a first clamping means for connecting the third end portion of the extension rod to the first end portion at a first position of the first support rod, the first clamping means having both a base means portion and a first clamping section and a first force means wherein the base means portion has a first pivot bore extending therethrough with the third end portion of the extension rod attached to the base means portion wherein the base means portion has a frusto-conical section extending outwardly, the first clamping section having a first unitary body with a second pivot bore extending therethrough and a first clamping bore extending therethrough proximate one end of the first body and a slot running through the first body from the first clamping bore to an opposite end of the first body, separating the first body into first and second resilient leg portions such that when the first force means is applied to the first and second leg portions the diameter of the first clamping bore is reduced, thereby frictionally clamping the first end portion of the first support rod, the first clamping section having a frusto-conical recess such that the base means portion and the first clamping section are joined together in a frictional engagement by inserting the frusto-conical section of the base means portion into the frusto-conical recess of the first clamping section; a second means for connecting the first end portion at a second position of the first support rod to the second end portion of the second support rod, the second clamping means having both a second clamping section and a third clamping section and a second force means wherein the second clamping section has a second unitary body with a third pivot bore extending therethrough and a second clamping bore extending therethrough proximate one end of the second body and a slot running through the second body from the second clamping bore to an opposite end of the second body, separating the second body into third and fourth resilient leg portions such that when said second force means is applied to the leg third and fourth portions the diameter of the second clamping bore is reduced thereby frictionally clamping the first end portion of the first support rod, the second clamping section having a frusto-conical section extending outwardly; the third clamping section having a third unitary body with a fourth pivot bore extending therethrough and a third clamping bore extending therethrough proximate one end of the third body and a slot running through the third body from the third clamping bore to an opposite end of the third body, separating the third body into fifth and sixth resilient leg portions such that when said second force means is applied to the fifth and sixth leg portions the diameter of the third clamping bore is reduced, thereby frictionally clamping the second end portion of the second support rod, the third clamping section having a frusto-conical recess such that the second clamping section and the third clamping section are joined together in a frictional engagement by inserting the frusto-conical section of the second clamping section into the frusto-conical recess of the third clamping section.
Claim 3
Dependent Claim
76 words
The apparatus of claim 1 wherein the first clamping means has the first pivot bore and the second pivot bore coaxially aligned with respect to a pivot axis running through the first clamping means, the first force means includes a turning bolt extending through the pivot bores and threadably engaging the base means thereby providing a force that brings the first and second leg portions of the first clamping section together when the bolt is turned.
Claim 4
Dependent Claim
86 words
The apparatus of claim 2 wherein the turning bolt includes a head section having first and second spaced-apart handle-retaining members, each handle-retaining member having first and second pin-receiving apertures, positioned along a pin pivot axis and further including a handle having a section positionable between the first and second retaining members and having a third pin-receiving aperture alignable with the first and second pin-receiving apertures and the pivot pin insertably engaging the first, second and third apertures, such that the handle is pivotable approximately 180° .
Claim 5
Dependent Claim
89 words
The apparatus of claim 1 wherein the second clamping means has the third pivot bore and the fourth pivot bore coaxially aligned with respect to a pivot axis running through the second clamping means, the second force means includes a turning bolt extending through the pivot bores and threadably engaging the second clamping section thereby providing a force that brings the third and fourth leg portions of the second clamping section and the fifth and sixth leg portions of the third clamping section together when the bolt is turned.
Claim 6
Dependent Claim
85 words
The apparatus of claim 4 wherein the turning bolt includes a head section having first and second spaced-apart handle-retaining members, each handle-retaining member having first and second pin-receiving apertures, positioned along a pin pivot axis and further including a handle having a section positionable between the first and second retaining members and having a third pin-receiving aperture alignable with the first and second pin-receiving apertures and the pivot pin insertably engaging the first, second and third apertures, such that the handle is pivotable approximately 180°.
Claim 7
Dependent Claim
26 words
The apparatus of claim 1 wherein the first support rod has a first protruding pin extending from the first end portion at a substantially right angle.
Claim 8
Dependent Claim
26 words
The apparatus of claim 1 wherein the second support rod has a second protruding pin extending from the second end portion at a substantially right angle.
Claim 9
Dependent Claim
42 words
The apparatus of claim 6 wherein the second clamping section has a fan-shaped recess set into the second body adjoining an opening of the second clamping bore such that the first protruding pin the first support rod is disposed in the recess.
Claim 10
Dependent Claim
43 words
The apparatus of claim 7 wherein the second clamping section has a fan-shaped recess set into the third body adjoining an opening of the third clamping bore such that the second protruding pin of the second support rod is disposed in the recess.
Claim 11
Dependent Claim
127 words
A clamping mechanism comprising: a first rod section of a retractor apparatus having a first end with a fist pin member extending outwardly therefrom; a first section with a frusto-conical section extending outwardly therefrom and having a first clamping bore for frictionally engaging the first rod section and a first fan-shaped recess for receiving the first pin member thereby limiting the rotational movement of the first rod section; a second section having a frusto-conical recess for frictional engagement with the frusto-conical section of the first section such that when the frusto-conical section is engaged in the frusto-conical recess, the first and second sections are placed in an adjoining fashion; and means for providing a force to bring together the first and second sections in an adjoining fashion.
Claim 12
Dependent Claim
127 words
A clamping mechanism comprising: a first rod section of a retractor apparatus having a first end with a fist pin member extending outwardly therefrom; a first section with a frusto-conical section extending outwardly therefrom and having a first clamping bore for frictionally engaging the first rod section and a first fan-shaped recess for receiving the first pin member thereby limiting the rotational movement of the first rod section; a second section having a frusto-conical recess for frictional engagement with the frusto-conical section of the first section such that when the frusto-conical section is engaged in the frusto-conical recess, the first and second sections are placed in an adjoining fashion; and means for providing a force to bring together the first and second sections in an adjoining fashion.
Claim 13
Dependent Claim
59 words
The clamping mechanism of claim 10 wherein the first section has a first pivot bore extending therethrough; the second secton has a second pivot bore extending therethrough; and a turning bolt extends through the first and second pivot bores and threadably engages the first section to provide a force to bring the sections together when the bolt is turned.
Claim 14
Dependent Claim
63 words
The clamping mechanism of claim 10 further including a second rod section with a second end section and a second pin member extending outwardly therefrom and wherein the second section includes a second clamping bore for frictionally engaging the second rod section and a second fan-shaped recess for receiving the second pin member thereby limiting the rotational movement of the second rod section.
Claim 15
Dependent Claim
25 words
The camping mechanism of claim 10 wherein the first fan-shaped recess has stop shoulders that define the amount of rotation of the first rod section.
Claim 16
Dependent Claim
25 words
The clamping mechanism of claim 12 wherein the second fan-shaped recess has stop shoulders that define the amount of rotation of the second rod section.
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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) | 1993-08-20 | 1994-02-19 | 1994-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-08-20 | 1998-02-19 | 1998-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-08-20 | 2002-02-19 | 2002-08-21 | $7700.00 | Window Closed / Lapsed |