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Publication numberUS2689568 A
Publication typeGrant
Publication dateSep 21, 1954
Filing dateAug 14, 1952
Priority dateAug 14, 1952
Publication numberUS 2689568 A, US 2689568A, US-A-2689568, US2689568 A, US2689568A
InventorsWakefield Charlie E
Original AssigneeWakefield Charlie E
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 2689568 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

Sept. 21, 1954 c. E wAKEFlELD 2,689,568

DILATOR Filed Aug. 14, 1952 C. E. Wakefield INVENTOR 1 I I BY 7 I I I I ATTORNEYS Patented Sept. 21, 1954 UNITED STATES PATENT OFFICE DILATOR Charlie E. Wakefield, Ada, Okla. Application August 14, 1952, Serial No. 304,410

(01. use-345) 1 Claim. 1

This invention relates to dilator construction, and more particularly to the construction of dilators designed primarily for insertion in the ear for holding the ear dilated to facilitate the cleaning and treating of the ear.

An important object of the invention is to provide a dilator which may be operated to dilate the ear opening to various degrees of dilation to be determined by the requirements incident to the particular type of treatment to be administered.

Another object of the invention is to provide a dilator which may be used as a means for dilating the outer or middle ear, thereby improving the hearing.

With the foregoing and other objects in view which will appear as the description proceeds, the invention consists of certain novel details of construction and combinations of parts hereinafter more fully described and pointed out in the claim, it being understood that changes may be made in the construction and arrangement of parts without departing from the spirit of the invention as claimed.

Referring to the drawing,

Figure 1 is an elevational view of a dilator constructed in accordance with the invention.

Fig. 2 is an elevational view taken at right angles to Fig. 1.

Fig. 3 is a side elevational view of a dilator showing the blades thereof as in their expanded positions.

Fig. 4 is an end elevational view of the dilator.

Fig. 5 is an elevational view taken from the opposite end of the dilator.

Fig. 6 is a longitudinal sectional view through an enlarged figure of the dilator.

, Referring to the drawing in detail, the dilator comprises the body portion 5 which is in the form of a band with integral dilator blades 6 the material of whichthe body and portion and blades are constructed being of a flexible character, so that the blades may be bent laterally, to accomplishthe purpose of the invention.

The reference character 1 indicates a shaft that extends transversely through the body, with the ends of the shaft fitted in openings of the body.

Secured intermediate the ends of the shaft 1, is the nut 8 through which the threaded shaft 9 extends, the threaded shaft 9 also passing through the collar II) which is held against movement longitudinally of the shaft 9, by the pin l5 that engages said shaft 9 so that rotary movement of the threaded shaft will cause the shaft 9 to move through the nut 8 moving the collar i0 towards the nut 8 in expanding the blades 6 of the dilator.

Ears I! extend from opposite sides of the collar l0, and are pivotally connected with the links I2 that also have pivotal connection with the blades 6, at [3.

As clearly shown by the drawing, the blades 6 are substantially narrow and elongated, the blades being curved outwardly at l4 so that when the blades are positioned in the ear opening, they will conform to the shape of the ear to prevent the dilator from slipping from the ear opening, when the blades are expanded in dilating the ear.

The threaded shaft 9 is provided with the knurled enlargement l5 disposed adjacent to one end thereof, the knurled enlargement being disposed with such relation to the blades that the threaded shaft may be conveniently operated to spread or contract the blades, as desired.

From the foregoing it will be seen that due to the construction shown and described, I have provided a dilator specially designed for use in dilating the opening of the car so that a syringe or other means used in treating the ear may be extended into the car without obstruction by the dilator.

Having thus described the invention, what is claimed is:

A dilator of the class described, comprising a circular body, a pair of elongated dilator blades formed integral with said circular body and extending in parallel spaced relation with each other, from one edge of the body, a shaft extending across the circular body, a nut on the shaft and disposed intermediate the ends thereof, an adjusting screw threaded in said nut and disposed between said blades, longitudinally of said blades, a collar mounted on said adjusting screw, and pivoted links connecting the collar with said blades whereby rotation of said adjusting screw expands or retracts the blades with respect to the adjusting screw.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 242,443 Foote June 7, 1881 1,331,737 Yllsto Feb. 24, 1920 1,950,788 Ewerhardt Mar. 13, 1934

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US242443 *Feb 2, 1881Jun 7, 1881 Edward b
US1331737 *Mar 30, 1918Feb 24, 1920Emil YlistoDilator
US1950788 *Oct 10, 1930Mar 13, 1934Gen Electric X Ray CorpTherapeutic electrode
Referenced by
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US4574800 *Dec 7, 1984Mar 11, 1986Cordis CorporationImplanted lead extractor
US4585000 *Sep 28, 1983Apr 29, 1986Cordis CorporationExpandable device for treating intravascular stenosis
US5599279 *Jan 29, 1996Feb 4, 1997Gus J. SlotmanSurgical instruments and method useful for endoscopic spinal procedures
US5620458 *Mar 16, 1994Apr 15, 1997United States Surgical CorporationSurgical instruments useful for endoscopic spinal procedures
US5697889 *May 5, 1995Dec 16, 1997Gus J. SlotmanSurgical instruments useful for endoscopic spinal procedures
US5755732 *Feb 11, 1997May 26, 1998United States Surgical CorporationSurgical instruments useful for endoscopic spinal procedures
US5782813 *Jun 19, 1995Jul 21, 1998Yoon; InbaeSurgical instrument stabilizer
US6015423 *May 12, 1998Jan 18, 2000Andrese; Craig A.Dilatation catheter tip for angioplasty procedures
US8052710Dec 15, 2006Nov 8, 2011Parviz KambinEndoscopic balloon tissue dissector and retractor
US8241330Nov 2, 2007Aug 14, 2012Lanx, Inc.Spinous process implants and associated methods
US8246646Sep 26, 2011Aug 21, 2012Parviz KambinEndoscopic balloon tissue dissector and retractor
US9055981Jan 25, 2008Jun 16, 2015Lanx, Inc.Spinal implants and methods
US20080147109 *Dec 15, 2006Jun 19, 2008Parviz KambinEndoscopic balloon tissue dissector and retractor
US20080183211 *Nov 2, 2007Jul 31, 2008Lanx, LlcSpinous process implants and associated methods
US20100228095 *Mar 6, 2009Sep 9, 2010Lanx, Inc.Surgical retractor
US20110196208 *Sep 24, 2010Aug 11, 2011Lanx, Inc.Asymetrical surgical retractor
U.S. Classification606/198
International ClassificationA61M29/00
Cooperative ClassificationA61M29/02
European ClassificationA61M29/02