US3724449A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Retractor apparatus
Assignee: Individual
•
Filing: 1970-10-19
•
Granted: 1973-04-03
•
Expires: 1990-10-19
Abstract
Abstract A frame includes a plurality of frame portions. Connecting means interconnects these frame portions for movement with respect to one another to define a substantially rectangular framework. Locking or latching means is associated with each of said connecting means for selectively locking or latching the frame portions in position with respect to one another, each of said locking or latching means including an outwardly extending manually engageable portion which can be readily operated. Support arms are also movably mounted with respect to the frame portions by connecting means, and similar locking or latching means are associated with such connecting means to lock or latch the support arms in position relative to the frame portions. Retractor blade means including a plurality of telescopic sections is connected to one end of the support arms.
Inventors
- 👤 W Gauthier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:58
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/02; A61B17/0293
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
237 words
A surgical retractor including a rigid frame means defining a central, enlarged opening, said frame means having opposite faces thereon, a longitudinally extending channel in each face, at least one elongate retractor blade support arm adjustably secured on said frame means and having a longitudinally extending channel therein, the channel in said support arm being in confronting relationship with One of the channels in said frame means, retractor blade means secured on one end of said support arm for engaging tissue at the edge of a surgical incision for holding the tissue in a retracted position, and connecting means interconnecting the support arm to the frame means, said connecting means having opposite enlarged ends interconnected by a reduced diameter post portion, the enlarged ends received in a respective adjacent channel of the frame means and the support arm, a pair of disc-shaped latching members around said post portion between the frame means and support arm, said latching members having confronting, interengaged, serrated, spiral shaped cam surfaces thereon, one of said latching members fixed against rotation relative to the frame means, radially projecting manually operable means on the other latching member so that said other latching member can be rotated about the axis of said post portion, so that said cam surfaces cause said latching members to wedge between the support arm and frame means to securely hold the support arm in adjusted position on the frame means.
Claim 2
Dependent Claim
237 words
A surgical retractor including a rigid frame means defining a central, enlarged opening, said frame means having opposite faces thereon, a longitudinally extending channel in each face, at least one elongate retractor blade support arm adjustably secured on said frame means and having a longitudinally extending channel therein, the channel in said support arm being in confronting relationship with One of the channels in said frame means, retractor blade means secured on one end of said support arm for engaging tissue at the edge of a surgical incision for holding the tissue in a retracted position, and connecting means interconnecting the support arm to the frame means, said connecting means having opposite enlarged ends interconnected by a reduced diameter post portion, the enlarged ends received in a respective adjacent channel of the frame means and the support arm, a pair of disc-shaped latching members around said post portion between the frame means and support arm, said latching members having confronting, interengaged, serrated, spiral shaped cam surfaces thereon, one of said latching members fixed against rotation relative to the frame means, radially projecting manually operable means on the other latching member so that said other latching member can be rotated about the axis of said post portion, so that said cam surfaces cause said latching members to wedge between the support arm and frame means to securely hold the support arm in adjusted position on the frame means.
Claim 3
Dependent Claim
15 words
Apparatus as defined in claim 1, wherein said post portion is of non-circular cross-sectional configuration.
Claim 4
Dependent Claim
15 words
Apparatus as defined in claim 2, wherein said post portion includes a reduced circular portion.
Claim 5
Dependent Claim
42 words
Apparatus as defined in claim 1, wherein each of said latching members includes an entry slot extending from the center thereof through one edge whereby the latching member can be placed in operative position with respect to one of said connecting means.
Claim 6
Dependent Claim
20 words
Apparatus as defined in claim 4, wherein one of said locking members includes a clearance cut-out adjacent said entry slot.
Claim 7
Dependent Claim
37 words
Apparatus as defined in claim 1, wherein one of said latching members includes a rib thereon engaged in an adjacent channel of the frame for preventing relative rotation of such latching member with respect to the frame.
Claim 8
Dependent Claim
20 words
Apparatus as defined in claim 1, wherein said support arm includes a removable hand grip portion at one end thereof.
Claim 9
Dependent Claim
19 words
Apparatus as defined in claim 1, wherein said support arm includes a removable depending portion at one end thereof.
Claim 10
Dependent Claim
24 words
Apparatus as defined in claim 8, including an arcuate blade means support portion freely rotatably mounted on the depending portion of said support arm.
Claim 11
Dependent Claim
33 words
Apparatus as defined in claim 9, wherein said blade means support portion has an open slot for receiving said depending portion of the support arm which snaps into place within said open slot.
Claim 12
Dependent Claim
52 words
Apparatus as defined in claim 9, wherein said depending portion of the support arm has a groove formed therein, said blade means support portion having a slot formed therein, a snap ring extending through said slot and being positioned in said groove for holding said blade means support portion in operative position.
Claim 13
Dependent Claim
37 words
Apparatus as defined in claim 1, wherein said retractor blade means includes a plurality of individual sections mounted for movement with respect to one another, each of said retractor blade sections being of substantially arcuate cross-sectional configuration.
Claim 14
Dependent Claim
21 words
Apparatus as defined in claim 12, wherein said retractor blade sections are disposed in telescopic relationship with respect to one another.
Claim 15
Dependent Claim
38 words
Apparatus as defined in claim 13, wherein said retractor blade sections have cooperating detent means thereon for automatically holding them in varying depths according to the different individual body cavities in operative positions with respect to one another.
Claim 16
Dependent Claim
23 words
Apparatus as defined in claim 13, including limit means for limiting relative movement of said retractor blade sections with respect to one another.
Claim 17
Dependent Claim
34 words
Apparatus as defined in claim 1, wherein said retractor blade means has an upper end and a lower end when in use, and said retractor blade means is resilient at the lower end thereof.
Claim 18
Dependent Claim
29 words
Apparatus as defined in claim 16, wherein the lower end of said retractor blade means has a channel formed therein, and a resilient insert is positioned within said channel.
Claim 19
Dependent Claim
30 words
Apparatus as defined in claim 1, wherein resilient friction reducing means is disposed between said disc portion and an adjacent one of said latching members to facilitate relative rotation therebetween.
Claim 20
Dependent Claim
25 words
Apparatus as defined in claim 1, wherein the frame latching means, support arm and connecting means are coated with a friction reducing organic plastic coating.
Claim 21
Dependent Claim
67 words
Retractor apparatus as in claim 1, wherein at least one of said enlarged ends is elongated in a direction perpendicular to the axis of said post portion, and said latching means includes means cooperatively engaged with part of said post portion to rotate said post portion and said one enlarged end to wedge the enlarged end against the sides of the channel in which it is received.
Claim 22
Dependent Claim
46 words
Retractor apparatus as in claim 1, wherein at least one of said enlarged ends on said connecting means has a circular configuration, thus enabling said retractor blade support arm to be angularly adjusted relative to an associated frame member in the plane of the frame member.
Claim 23
Dependent Claim
24 words
A surgical retractor as in claim 1, wherein said frame means comprises a plurality of elongate, rigid frame members releasably and adjustably connected together.
Claim 24
Dependent Claim
180 words
A surgical retractor as in claim 22, wherein each frame member has opposite faces thereon and a longitudinally extending channel is in each face, connecting means adjustably connecting adjacent frame members together with the channel in one face of each frame member in confronting relationship to the channel of an adjacent frame member, said connecting means having opposite enlarged ends interconnected by a reduced diameter post portion, the enlarged ends received in a respective adjacent channel of a pair of adjacent frame members, a pair of disc-shaped latching members around said post portion between the frame members, said latching members having confronting, interengaged, serrated, spiral shaped cam surfaces thereon, one of said latching member fixed against rotation relative to the frame members, radially projecting manually operable means on the other latching member so that said other latching member can be rotated about the axis of said post portion, so that said cam surfaces cause said latching members to wedge between the confronting faces of adjacent frame members to securely hold the frame members in adjusted position relative to one another.
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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) | 1976-04-02 | 1976-10-02 | 1977-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-02 | 1980-10-02 | 1981-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-02 | 1984-10-02 | 1985-04-03 | $7700.00 | Window Closed / Lapsed |