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Publication numberUS2545115 A
Publication typeGrant
Publication dateMar 13, 1951
Filing dateMar 9, 1950
Priority dateMar 9, 1950
Publication numberUS 2545115 A, US 2545115A, US-A-2545115, US2545115 A, US2545115A
InventorsSon Anthony J
Original AssigneeSonco Inc
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Dental syringe
US 2545115 A
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Description  (OCR text may contain errors)

March 13, 1951 SON 2,545,115

DENTAL SYRINGE Filed March 9, 1950 1 7 i- M /g I /7 6 ,7 4 /4 A? E;:| /Z in A2 L L I I f A z.

INVEN TOR.

' UNITED STATES DENTAL SYRINGE Anthony J. Son, Boston, Mass., assignorto Sonco, e

Inc., Mattapan, Mass.

chusetts a corporation of Massa- I Application March 9, 1950, S'erial-No. 1 4s,551

3 Claims. (01. 128-215) This invention relates .tosubcutaneousinjection instruments and more especially to those of the type commonly known as dental syringes.

One object of the invention is to provide means near the forward end of the needle for pushing the cheek or the tongue of the patient away from the needle when an injection is to be made in the outer or the inner surface of the gum, respectively, in order that the dentist may better locate the exact point at which the injection is to be made.

Another object is the provision of means for bending the forward portion of the needle with respect to the axis of the syringe when the injection is to be made on the inner surface of the um.

With these and other objects in view, my invention consists of the novel features, parts, and combination of parts, which are particularly described in connection with the accompanying drawings illustrating a dental needle that has given good results in practice.

To attain these objects, I provide a needle guard rod member adjustably secured to an adapter which locks the needle to the syringe, the rearward portion of said rod member being parallel to the axis of the needle and spaced away therefrom and the forward portion thereof being curved with respect to said axis to provide a curved shoulder which affords a tongue or cheek pushing member ofi-set from the needle point. The rod member preferably terminates in a needie-stiffening sleeve having a penetration-governing button on its forward end.

In the drawings accompanying and forming a part of this specification,

Figure 1 is a, side elevation of a dental syringe embodying my invention, and

Fig. 2 is a side elevation of a modification.

In the particular drawings selected for more fully disclosing my invention and the principles of the same, said drawings to be considered as illustrative, mere y, and not restrictive, I is a syringe body of the usual type which holds the ampule (not shown) which the inner end of the needle H penetrates. The adapter I2 is a locking member whereby the hub i3 is secured to the syringe body as described in detail in my Patent No. 2,484,657, dated October 11, 1949. While such adapter is preferred it is to be understood that any other suitable locking means may be employed. The rod member I4 is adjustably secured to the locking member, passing through an aperture in the same and held in adjusted position by the screw 15.

In Fig. 1, the rearward portion of the rod member is parallel to the-axis of the needle and is spaced away-therefrom," the axis of the needle being coaxial with the axis of the syringe body. The forward end portion of said rod member has a bore I6 coaxial with the needle for receiving the latter and terminating in a button I! which governs the penetration of the needle. The forward end portion of the rod member is curved with respect to the axis of the needle to provide a curved shoulder [8 which affords a tongue or check pushing member'oifset from the needle point. The curved portion [8 in Figure 1 is designed to push the cheek of the patient away from the needle when the injection is to be made in the outer surface of the gum.

In Fig. 2 the rearward portion of the rod [4 is parallel to the axis of the syringe body and to the axis of the lower portion of the needle, and is spaced therefrom. The forward portion of the rod has a compound curvature, the outer part l8 thereof being curved with respect to the axis of the lower portion of the needle to deflect the forward portion of the needle away from its axis and to provide a curved shoulder which affords a tongue or cheek pushing member offset from the needle point. This is particu arly useful when the in ection is to be made in the inner surface of the gum. It will be understood, of course, that the syringe shown in Figure 2 may be used to make an injection in the outer surface of the gum, if desired, and that the syringe shown in Fig. 1, may be used to make an injection in the inner surface of the gum.

Having thus described illustrative embodiments of my invention without, however, limiting the same thereto, various modifications within the purview of the appended claims being permissible, what I claim and desire to secure by Letters Patent is:

' 1. A dental syringe com rising in combination, a syringe body, an injection needle, a locking member interposed between said need e and said syringe body, and a rod member adjustably secured to said locking member. the rearward portion of said rod member being parallel to the axis of said needle and spaced away therefrom, the

I forward end portion of said rod member having .with said axis which affords a tongue or check pushing member offset from the needle point.

2. A dental syringe comprising in combination, a syringe body, an injection needle, a locking member interposed between said needle and said syringe body, and a rod member adjustably secured to said locking member, the rearward portion of said rod member being parallel to the axis of said needle and spaced away therefrom, the forward end portion of said rod member being curved with respect to the axis of the rearward portion of the needle, said forward portion of said rod member having a bore for receiving the forward end portion of said needle and deflecting the same away from the axis of the rearward portion thereof, said curved portion of .said rod member providing a curved shoulder which affords a tongue or cheek-pushing member ofiset from the needle point, said forward end portion of said rod member terminating in a penetrationgoverning button. 7 3. A dental syringe comprising in combination, a syringe body, an iniection needle, 2. locking member interposed between said needle and said the needle point.

syringe body, and a rod member adiustably secured to said locking member, the rearward portion of said rod member being parallel to the axis of said needle and spaced away therefrom, the forward end portion of said rod member having a bore for receiving the forward end portion of said needle and a portion of said rod memher being curved with respect to the axis of the needle to provide a curved shoulder which affords a tongue or cheek pushing member offset from ANTHONY J. SON.

. REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US780146 *Jun 13, 1904Jan 17, 1905Amos A WilcoxDental instrument.
US780147 *Sep 14, 1904Jan 17, 1905Amos A WilcoxDental instrument.
US982931 *Feb 8, 1907Jan 31, 1911Theo Eustace BridgerDental apparatus.
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2899958 *Nov 17, 1955Aug 18, 1959 Dental needle
US4596553 *May 7, 1984Jun 24, 1986Hans LeeMethod and apparatus for performing suction lipectomy
US4627834 *Sep 18, 1984Dec 9, 1986Hans LeeApparatus for performing suction lipectomy
US4676780 *Feb 21, 1986Jun 30, 1987Hans LeeSurgical apparatus for performing suction lipectomy
US4713053 *May 6, 1985Dec 15, 1987Hans LeeMethod and apparatus for performing suction lipectomy
US4938743 *Jun 29, 1989Jul 3, 1990Hans LeeSurgical apparatus for performing suction lipectomy
US7913883 *Mar 22, 2007Mar 29, 2011Scott KaufmanHygienic disposable dentifrice applicator and oral periodontal cross contamination prevention system
WO1985005024A1 *May 6, 1985Nov 21, 1985Hans LeeMethod and apparatus for performing suction lipectomy
Classifications
U.S. Classification604/117
International ClassificationA61M5/34, A61M5/32
Cooperative ClassificationA61M5/32, A61M2005/341
European ClassificationA61M5/32