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Publication numberUS583932 A
Publication typeGrant
Publication dateJun 8, 1897
Filing dateMay 14, 1896
Publication numberUS 583932 A, US 583932A, US-A-583932, US583932 A, US583932A
InventorsOle Pederson
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 583932 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

(No Model) O. PEDBRSON.

REGTAL SPECULUM. No. 583,932. Patented June 8,1897.

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REGTAL S SPECIFICATION forming part of Letters Patent N o. 583,932, dated June 8, 1897'.

Application led May 14, 1896.

To @ZL wiz/0m, t may concern.-

Be it known that I, OLE PEDERSON, a citizen of the United States, residing at Los Angeles, in the county of Los Angeles and State of California, have invented certain new and useful Improvements in a Combined Rectal Dilator and Speculnm, of which the following is a full, clear, and exact description, reference beinghad to the accompanying drawings, which form a part of this specification.

My invention relates to certain new and useful improvements in combined rectal dilators and speculums; and my invention consists in features of .novelty hereinafter described and claimed.

Figure I is a perspective view of my improved device. Fig. II represents a front elevation of the adjusting-screw. Fig. III is a detail edge view of the outer end of one of the arms. Fig. IV is a detail side elevation of the outer end of one of the arms. Fig. V is a detail edge view of the outer end of one of the arms, showing ad j ustable nut removed. Fig. VI represents a side elevation of one oi. the adjustable nuts. Fig. VII represents an end elevation of the adjust-able nut. Fig. VIII is a detail view showing manner of connecting the arms. Fig. IX is a detail view of a central portion of the arms, showing connect ing mechanism removed. Fig. X is a detail side elevation of the pivoted arms. Fig. XI is a transverse section taken on line XI XI of Figs. I and VIII. Fig. XII represents the inner face of the arm-connecting disk. Fig.

XIII represents the washer which holds arms in position.

Referring to the drawings, l represents the blades of the combined dilatorand speeulum, and 2 the arms by which the blades are operated, the blades being formed after the order of the ordinary speculum, whereby the two halves when placed together form a tubular body. The arms 2 are pivoted near their center, the contour of the arms being such as to permit a rocking movement on the central pivot. VThe arms 2 are provided near their center with an annular groove 3. In this way the arms lie in the same plane, and, being spaced apart by their bearing, their shape adapts them to rock to and from each other.

i represents a disk having a central bolt 5,

Serial No. 591,574. (No model.)

which extends through a circular orifice G, formed in the arms 2, the outer end of said bolt being threaded, as shown at 7, and the portion of the bolt next to the disk having a smooth annular surface 8, on which the arms 2 rock.

9 represents an annular rib on the face of the disk e, said rib iitting into the annular recess 3 in the arms 2. The disk 4 is held in position by means of a washer 30, placed over the outer end of the bolt 5, and by a handnut l0, which screws onto the outer end of the bolt 5, thus by unscrewing bolt l() and removing the disk 4 the arms 2, with their respective dilator-blades,will be readily separated for purpose of cleansing, dre. The outer ends of the arms 2 are forked, as shown at ll, leaving an intervening space l2. The forked portions ll are provided with circular apertures 13, in which circular nuts 14 have their bearing, the nuts 14C being left free to revolve in their bearings.

15 represents a right-and-left screw with a central thumb-wheel 1G, by which the screw is operated, the thumb-wheel being in position between the outer ends of the arms 2, the nuts la having an internal thread, into which the right-and-left screw l5 operates. It will be seen by this construction that as the thumb-wheel 16 is rotated the outer ends of the arms 2 are drawn toward each other or forced apart in order to expand or contract the dilater and that the nuts le will revolve in their bearings, so as to adjust themselves to the varying angle of the arms 2, thus avoiding any binding between the right-and-left screw and the nuts. By the means described I provide a dilator that can be set in any position in case it is desired to use it as a speculum and which is easily operated without friction of the parts.

I claim as my invention l. In acombined dilater and speculum, the combination of the blades, arms arranged edge to edge in the same plane and spaced apart, circular openings in the arms, circular nuts having peripheral movable bearings in said openings,a right-and-lef t screw engaging said nuts, and a thumb-wheel for operating said screws, substantially as set forth.

2. In a combined dilator and spec ul u m, the


[o with the blades, spaced apart in the' sarne plane and shaped to rock to and from each other, an annular recess in said arms, a disk having an annular rib adapted to fit in said recess, a circular shoulder forming; a bearing for the arms, and a nut for holding said disk i5 and larms together, substantially as set forth.

OLE PEDERSON. Witnesses:


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US6302842 *Jan 11, 2001Oct 16, 2001Innovative Surgical Design LlcEpisiotomy retractor
US7481766Aug 13, 2004Jan 27, 2009Synthes (U.S.A.)Multiple-blade retractor
DE102007035132A1 *Jul 25, 2007Feb 5, 2009Medicon Eg, Chirurgiemechaniker-GenossenschaftSurgical instrument for forcing apart tissues, has guide rod, and valves attached to retaining arms, where instrument is made of polyetheretherketone, polyphenylsulfone or glass fiber reinforced plastic
Cooperative ClassificationA61B17/0206