In one aspect, a speculum is provided herein which includes a first arm having a first channel formed thereon adapted to the shape of an eyelid; a second arm having a second channel formed thereon adapted to the shape of an eyelid; a hinge unitarily formed with the first and second arms, the hinge permitting the first and second arms to selectively rotate about an axis rotation, the selective rotation causing the first and second channels to selectively move closer and farther apart; and, a position retaining arrangement. The position retaining arrangement includes a first element formed unitarily with the first arm, and a second element formed unitarily with the second arm. The first and second elements are configured to cooperatively retain the first and second arms in a selected rotational position. Advantageously, with the subject invention, a unitary speculum may be formed which includes an adjustable position retaining arrangement.
1. A speculum comprising:
a first arm having a trough-shaped first channel formed thereon, said first channel having an open portion adapted to the shape of an eyelid;
a second arm having a trough-shaped second channel formed thereon, said second channel having an open portion adapted to the shape of an eyelid, said open portion of said second channel facing away from said open portion of said first channel;
a hinge unitarily formed with said first and second arms, said hinge permitting said first and second arms to selectively rotate about an axis of rotation, said selective rotation causing said first and second channels to selectively move closer and farther apart; and,
a position retaining arrangement including:
at least two first elements formed unitarily with said first arm, said first elements being spaced apart in a direction parallel to said axis of rotation so as to define a channel therebetween; and,
a second element formed unitarily with said second arm;
wherein, said first and second elements being configured to cooperatively retain said first and second arms in a selected rotational position,
wherein, with said first and second elements being in cooperative retention, said first elements straddle said second arm with a portion of said second arm received in said channel, and,
wherein the speculum is monolithically formed as one piece.
2. A speculum as in claim 1 , wherein said first and second elements are configured to interferingly interengage so as to limit rotational movement of said first and second arms.
3. A speculum as in claim 2 , wherein said first and second elements are separable to permit rotation of said first and second arms.
4. A speculum as in claim 2 , wherein a predetermined amount of force may be applied to cause selective rotation of said first and second arms, said predetermined amount of force being sufficient to overcome a retaining force generated by said first and second elements.
5. A speculum as in claim 1 , wherein said first arm includes a finger hole.
6. A speculum as in claim 1 , wherein the speculum is formed of thermoplastic.
7. A speculum as in claim 1 , wherein said hinge is located along a mid-point of said first and second arms.
8. A speculum as in claim 1 , wherein, in an initial state, said first and second channels are in proximity.
9. A speculum as in claim 1 , wherein, in an initial state, said first and second elements are separated and out of contact.
10. A speculum as in claim 1 , further comprising stop blocks configured to limit the extent of rotation of said first and second arms.
11. A speculum as in claim 1 , wherein said hinge is located on said first and second arms at opposite ends from said channels thereof.
12. A speculum as in claim 1 , further comprising one or more features for retaining sutures.
13. A speculum comprising:
a first arm having a trough-shaped first channel formed thereon, said first channel having an open portion adapted to the shape of an eyelid;
a second arm having a trough-shaped second channel formed thereon, said second channel having an open portion adapted to the shape of an eyelid, said open portion of said second channel facing away from said open portion of said first channel;
a hinge connected to said first and second arms, said hinge permitting said first and second arms to selectively rotate about an axis of rotation, said selective rotation causing said first and second channels to selectively move closer and farther apart;
at least two first elements on said first arm, said first elements being spaced apart in a direction parallel to said axis of rotation so as to define a channel therebetween; and,
a second element on said second arm;
wherein, said first and second elements are configured to cooperatively retain said first and second arms in a rotational position with interfering interengagement between said first and second elements limiting rotation of said first and second arms, wherein, with said first and second elements being in cooperative retention, said first elements straddle said second arm with a portion of said second arm received in said channel, and wherein the speculum is monolithically formed as one piece.
14. A speculum as in claim 1 , wherein said hinge is a living hinge.
15. A speculum as in claim 13 , wherein said hinge is a living hinge.
16. A speculum as in claim 1 , wherein the speculum is monolithically formed by molding as one piece.
17. A speculum as in claim 13 , wherein the speculum is monolithically formed by molding as one piece.