US3046985A - Dental syringe adapter - Google Patents

Dental syringe adapter Download PDF

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Publication number
US3046985A
US3046985A US781523A US78152358A US3046985A US 3046985 A US3046985 A US 3046985A US 781523 A US781523 A US 781523A US 78152358 A US78152358 A US 78152358A US 3046985 A US3046985 A US 3046985A
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United States
Prior art keywords
syringe
body
needle
adapter
tip
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US781523A
Inventor
Saenz Candelario
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Saenz Candelario
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Priority to US781523A priority Critical patent/US3046985A/en
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Publication of US3046985A publication Critical patent/US3046985A/en
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Application status is Expired - Lifetime legal-status Critical

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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178Syringes
    • A61M5/24Ampoule syringes, i.e. syringes with needle for use in combination with replaceable ampoules or carpules, e.g. automatic
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178Syringes
    • A61M5/31Details
    • A61M5/32Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
    • A61M5/3205Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
    • A61M5/321Means for protection against accidental injuries by used needles
    • A61M5/3243Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
    • A61M5/326Fully automatic sleeve extension, i.e. in which triggering of the sleeve does not require a deliberate action by the user
    • A61M2005/3267Biased sleeves where the needle is uncovered by insertion of the needle into a patient's body
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178Syringes
    • A61M5/31Details
    • A61M5/32Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
    • A61M5/3205Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
    • A61M5/321Means for protection against accidental injuries by used needles
    • A61M5/3243Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
    • A61M5/326Fully automatic sleeve extension, i.e. in which triggering of the sleeve does not require a deliberate action by the user

Description

July 31, 1962 c. SAENZ DENTAL SYRINGE ADAPTER Filed Dec. 19, 1958 Q on mm v mm Q IIN F NM 1 a w 3 NM mm 9 vn M 9m vw n R "W AWE/7 mm Q 2 m mu 3 W Came/aria Saenz 1N VEN TOR.

tate

3filfi35 Patented July 31, 1962 Filed Dec. 19, 1958, Ser. No. 781,523 7 Claims. (Cl. 128218) This invention relates to hypodermic syringes and more particularly to improvements in conventional dental syrines.

The dental patient is always apprehensive to pain when he awaits an extraction and at the time that he sees the type of syringe that is presently used by dentists. This invention provides a dental syringe adapter which conceals the needle of the syringe and which serves several other important functions. The concealing of the needle automatically prevents at least some of the apprehension in the patient.

The adapter for the dental syringe will reduce pain in the injection. It is a present practice for dentists to press the index finger of the left hand on the area of gum tissue to be injected just before inserting the needle. This pressure applied by the dentists finger reduces the pain when actual injection takes place. An adapter constructed in accordance with this invention serves the same purpose and it is entirely unnecessary for the dentists finger to come in contact with the anesthetic. A number of dentists are constantly bothered with dermatitis caused by contact of the anesthetic. By use of this adapter, the dentist need not use his index finger to apply pressure and therefore, he need not have his finger come in contact with the anesthetic.

An adapter constructed in accordance with the invention is exceedingly simple from a mechanical standpoint. It includes only three parts and a slight modification of a conventional syringe. The adapter has a gum tissue pressure tip, a syringe barrel sleeve with which the tip is adjustably connected and a spring which reacts on the tip and the body of the syringe in a direction to yieldingly maintain the sleeve and tip in an extended position with respect to the syringe.

There is a lock connected with the body of the syringe and the barrel sleeve to hold the barrel sleeve in a selected retracted position when this is desired by the dentist or by the person sterilizing the equipment.

Accordingly, it is a further object of the invention to provide a syringe adapter, preferably but not exclusively used by dentists, which possesses structurally improved features over previous syringes.

These together with other objects and advantages which will become subsequently apparent reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawing forming a part hereof, wherein like numerals refer to like parts throughout, and in which:

FIGURE 1 is a perspective view, parts broken away to illustrate otherwise hidden detail, of a conventional syringe provided with an adapter which is in the extended position with respect to the syringe.

FIGURE 2 is a sectional view taken on the line 22 of FIGURE 1.

FIGURE 3 is an enlarged fragmentary sectional view of the construction in FIGURE 2, showing the adapter in the retracted position.

FIGURE 4 is a transverse sectional view taken on the line 44 of FIGURE 3 and showing the adapter locking structure.

In the accompanying drawing there is a syringe having an elongated tubular syringe body 12, an ampule 14 containing an anesthetic, a plunger 16 operable in syringe body 12 and other conventional structure ordiarily found in a common syringe. Among this other structure is the tubular needle 18 to pierce the ampule, the needle held in place by needle holder 20 at the outer end of the syringe body. The use of an ordinary syringe is well known in the art, and its functions are equally well known.

This invention improves the conventional syringe by an adapter 22 having a tip 24, a syringe body sleeve 26 and a coil spring 28. Tip 24 has a longitudinally concave, truncated conical end 30 through which central passage 32 extends. The tip has a sleeve portion 34 having external threads 36 at its inner end, and a recess 4% divided from passage 32 by shoulder 42. Needle '13 extends through recess 49 and passage 32, but the normal position of the adapter tip.(FlGURE 2) completely conceal the needle 18.

Spring 28 is seated on shoulder 42 and on the end wall 44 of syringe body 12. The bias of the spring is in a direction tending to extend the adapter 22 outwardly from the needle end of the syringe. Sleeve 26 a bore 48 of sufiicient diameter to fit over the generally cylindrical body 12 of the syringe. One end of the bore has internal threads 50 in which threads 36 are engaged. Tip 24- is adjustable with respect to the sleeve 26 by threading the tip to a deeper or more shallow position in threads 59.

There is means for locking the sleeve in a selected adjusted position on the body 12 of the syringe. This means consists preferably of a member or screw 54 radially adjustable in a threaded opening 56 in the side wall of sleeve 26. The inner end of the screw may be made to engage in keeper means in the form of a selected inclined notch or slot 60 in the body 12 of the syringe 19. The notch 64 is one of a group of notches and is inclined in a direction to keep the screw 54 well seated in the bottom of notch 6i). Hence, the position of the adapter on the body of the syringe may be selected by proper selection of notches 61) within which screw 54 seats.

In operation, it is assumed that the syringe is ready for use. In such position (FIGURE 2) the adapter is held on the syringe body by means of screw 54 seating in a selected notch 69. Spring 28 holds the adapter in place, but the adapter may be slid back on body 12 as the dentist applies pressure to the area around the piercing point for needle 18. As pressure is applied, only the end of adapter tip 24 contacts the tissue of the patient. By application of additional force, the point of needle 18 is made to penetrate the tissue inasmuch as the adapter will slide back on the body of the syringe, the screw 54 separating from or riding at least part of the way out of its notch 64). By depression of plunger 16, the injection may be completed.

In cases wherein it is impractical to use the adapter, it need not be separated from the syringe. It is only necessary to pull the adapter back on the syringe body and engage screw 54 in a different notch 60, holding the adapter inwardly of the syringe against the yielding opposition of spring 28. Then, the syringe may be used as any other conventional syringe.

The foregoing is considered as illustrative only of the principles of the invention. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the invention to the exact construction and operation shown and described, and accordingly, all suitable modifications and equivalents may be resorted to, falling within the scope of the invention as claimed.

What is claimed as new is as follows:

1. A syringe comprising, in combination, an elongated tubular body for receiving an ampule, a tubular needle in the forward end portion of the body for puncturing the ampule for receiving fluid therefrom, means on the rear end portion of the body for ejecting the fluid through the needle, a sleeve connected to and slidable longitudinally on the body, a tip mounted on' the sleeve and slidable on the needle to a forward operative position wherein the needle is concealed and to a rearward inoperative position wherein said needle is exposed, resilient means yieldingly urging the tip forwardly on the needle, and means for releasably anchoring the tip in either position against the tension of said resilient means.

2. A syringe in accordance with claim 1, wherein said resilient means includes a coil spring mounted under compression between the forward end of the body and the tip and encircling the needle.

3. A syringe in accordance with claim 1, said body having generally circumferential slots therein at longitudinally spaced points having communication with each other, said anchoring means including a member mounted on the sleeve and engageable selectively in the slots, said sleeve being rotatable on the body for engaging the mem-' her in the slots. a

4. A syringe comprising an elongated tubular body for receiving a fluid, a tubular needle in the body communicating therewith for receiving fluid therefrom, means on the rear end of the body for ejecting the fluid, said body having a longitudinally elongated opening therein and further having longitudinally spaced, parallel rearwardly opening slots communicating at one end with the pening and extending at a forward inclination therefrom and closed at their. forward ends, a sleeve slidable longitudinally on the body and connected thereto, a tip on the sleeve slidable on the needle to a forward operative position for concealing same and. to a retracted, inoperative position for exposing said needle, a coil spring mounted under compression between the body and the tip for yielding urging the latter forwardly, and a member on the body engageable selectively in the slots for anchoring the tip in either position. i

5. A syringe comprising an elongated body for the reception of a fluid, a needle projecting from the for ward end of the body, means for ejecting the fluid through the needle said body having an opening therein and further having longitudinally spaced slots therein communicat-ing with the opening and extending at a forward inclination from their open ends therefrom, a sleeve connected to and slidable on the body, a tip'on said sleeve slidable forwardly to an operative position on the needle for concealing same, a spring between the tip and the body for yieldingly actuating and tip forwardly to said operative position, and a member mounted in the sleeve and engageable selectively in the slots for releasably anchoring the tip in. said operative position for concealing the needle .or in a retracted inoperative position for exposing the needle. 1 v v 6. A syringe in accordance with claim 5, wherein said tip is threadedly connected to the sleeve for longitudinal adjustment relative .to the needle.

7. A syringe in accordance with claim 5, wherein said tip comprises a generally truncated conical, longitudinally concave shape.

References Cited in the file of this patent UNITED STATES PATENTS

US781523A 1958-12-19 1958-12-19 Dental syringe adapter Expired - Lifetime US3046985A (en)

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Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3306290A (en) * 1964-02-14 1967-02-28 Harold S Weltman Automatically retractable needle syringe
US3596659A (en) * 1968-12-09 1971-08-03 Nuclear Associates Inc A shielding holder for a syringe
US3797489A (en) * 1972-02-10 1974-03-19 Survival Technology Hypodermic injection device with shock absorbing spring
US4488545A (en) * 1982-12-10 1984-12-18 Sherwood Medical Company Catheter placement device
US4639249A (en) * 1986-01-13 1987-01-27 Larson Eldon E Latch integral with latched apparatus
US4772272A (en) * 1987-05-11 1988-09-20 Mcfarland Barton C Needle protective sleeve
EP0288003A1 (en) * 1987-04-20 1988-10-26 Habley Medical Technology Corporation Dental syringe having an automatically retractable needle
US4820275A (en) * 1987-12-21 1989-04-11 Habley Medical Technology Corporation Retractable needle syringe with integral spring
US4898590A (en) * 1988-06-24 1990-02-06 Research Foundation Of The State University Of N.Y. Syringe having protective sleeve
EP0368191A1 (en) * 1988-11-07 1990-05-16 KIRCHNER & WILHELM GMBH & CO. Injection device
WO1990007349A1 (en) * 1988-12-30 1990-07-12 Vadher Dinesh L Retractable needle/syringe device
US4994034A (en) * 1989-07-11 1991-02-19 Botich Michael J Retractable needle hypodermic syringe system
US5088988A (en) * 1988-06-28 1992-02-18 Sherwood Medical Company Combined dental syringe and needle shield
USRE34045E (en) * 1987-05-11 1992-08-25 Health Technology Systems, Inc. Needle protective sleeve
US5154699A (en) * 1988-03-01 1992-10-13 Ryan Medical, Inc. Safety winged needle device for use with fistulas
US5423758A (en) * 1993-12-16 1995-06-13 Shaw; Thomas J. Retractable fluid collection device
US5437647A (en) * 1990-05-09 1995-08-01 Safety Syringes, Inc. Disposable self-shielding aspirating syringe
US5624400A (en) * 1990-05-09 1997-04-29 Safety Syringes, Inc. Disposable self-shielding aspirating syringe
US20020082564A1 (en) * 2000-12-27 2002-06-27 Tuan Pham Camouflaged syringe arrangement
US20040116854A1 (en) * 2002-12-12 2004-06-17 Abulhaj Ramzi F. Syringe retractable needle and method
US20040116855A1 (en) * 2001-02-21 2004-06-17 Sergey Popov Compact catheter insertion apparatus
US20050119624A1 (en) * 2002-03-27 2005-06-02 Safety Syringes, Inc. Syringe with needle guard injection device
US6918889B1 (en) 1999-06-10 2005-07-19 Sanofi-Synthelabo Disposable injection device
US20050273057A1 (en) * 2004-04-26 2005-12-08 Sergey Popov Catheter insertion apparatus with a needle tip protective system
US8372044B2 (en) 2005-05-20 2013-02-12 Safety Syringes, Inc. Syringe with needle guard injection device
US10232402B2 (en) 2017-04-04 2019-03-19 Robert B Bowers Piston driven one shot grease dispenser

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1320536A (en) * 1919-11-04 Saymosto di s aiico ahd johh be
GB143084A (en) * 1918-03-15 1920-05-20 Edmondo Luswergh Improvements in and relating to self-acting syringes for hypodermic injections
US2674246A (en) * 1952-03-14 1954-04-06 Earl J Bower Hypodermic syringe
US2804074A (en) * 1955-04-29 1957-08-27 Hill Clifford Warren Automatic injector hypodermic syringe
US2876770A (en) * 1955-10-10 1959-03-10 Raymond A White Shielded hypodermic syringe

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1320536A (en) * 1919-11-04 Saymosto di s aiico ahd johh be
GB143084A (en) * 1918-03-15 1920-05-20 Edmondo Luswergh Improvements in and relating to self-acting syringes for hypodermic injections
US2674246A (en) * 1952-03-14 1954-04-06 Earl J Bower Hypodermic syringe
US2804074A (en) * 1955-04-29 1957-08-27 Hill Clifford Warren Automatic injector hypodermic syringe
US2876770A (en) * 1955-10-10 1959-03-10 Raymond A White Shielded hypodermic syringe

Cited By (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3306290A (en) * 1964-02-14 1967-02-28 Harold S Weltman Automatically retractable needle syringe
US3596659A (en) * 1968-12-09 1971-08-03 Nuclear Associates Inc A shielding holder for a syringe
US3797489A (en) * 1972-02-10 1974-03-19 Survival Technology Hypodermic injection device with shock absorbing spring
US4488545A (en) * 1982-12-10 1984-12-18 Sherwood Medical Company Catheter placement device
US4639249A (en) * 1986-01-13 1987-01-27 Larson Eldon E Latch integral with latched apparatus
EP0276522A1 (en) * 1986-01-13 1988-08-03 Eldon E. Larson Lubricating device
EP0288003A1 (en) * 1987-04-20 1988-10-26 Habley Medical Technology Corporation Dental syringe having an automatically retractable needle
US4772272A (en) * 1987-05-11 1988-09-20 Mcfarland Barton C Needle protective sleeve
USRE34045E (en) * 1987-05-11 1992-08-25 Health Technology Systems, Inc. Needle protective sleeve
US4820275A (en) * 1987-12-21 1989-04-11 Habley Medical Technology Corporation Retractable needle syringe with integral spring
US5154699A (en) * 1988-03-01 1992-10-13 Ryan Medical, Inc. Safety winged needle device for use with fistulas
US4898590A (en) * 1988-06-24 1990-02-06 Research Foundation Of The State University Of N.Y. Syringe having protective sleeve
US5088988A (en) * 1988-06-28 1992-02-18 Sherwood Medical Company Combined dental syringe and needle shield
EP0368191A1 (en) * 1988-11-07 1990-05-16 KIRCHNER & WILHELM GMBH & CO. Injection device
WO1990007349A1 (en) * 1988-12-30 1990-07-12 Vadher Dinesh L Retractable needle/syringe device
US4988339A (en) * 1988-12-30 1991-01-29 Vadher Dinesh L Retractable needle/syringe devices for blood collection, catheterization, and medicinal injection procedures
US4994034A (en) * 1989-07-11 1991-02-19 Botich Michael J Retractable needle hypodermic syringe system
USRE37439E1 (en) * 1990-05-09 2001-11-06 Safety Syringes, Inc. Disposable self-shielding aspirating syringe
US5437647A (en) * 1990-05-09 1995-08-01 Safety Syringes, Inc. Disposable self-shielding aspirating syringe
US5624400A (en) * 1990-05-09 1997-04-29 Safety Syringes, Inc. Disposable self-shielding aspirating syringe
WO1992008505A1 (en) * 1990-11-07 1992-05-29 Botich Michael J Hypodermic syringe
US5423758A (en) * 1993-12-16 1995-06-13 Shaw; Thomas J. Retractable fluid collection device
US6918889B1 (en) 1999-06-10 2005-07-19 Sanofi-Synthelabo Disposable injection device
US20020082564A1 (en) * 2000-12-27 2002-06-27 Tuan Pham Camouflaged syringe arrangement
US20040116855A1 (en) * 2001-02-21 2004-06-17 Sergey Popov Compact catheter insertion apparatus
US7422572B2 (en) 2001-02-21 2008-09-09 Serpomed Ltd. Compact catheter insertion apparatus
US7824379B2 (en) * 2002-03-27 2010-11-02 Safety Syringes, Inc. Syringe with needle guard injection device
US9375536B2 (en) 2002-03-27 2016-06-28 Safety Syringes, Inc. Syringe with needle guard injection device
US20050119624A1 (en) * 2002-03-27 2005-06-02 Safety Syringes, Inc. Syringe with needle guard injection device
US9895496B2 (en) 2002-03-27 2018-02-20 Safety Syringes, Inc. Syringe with needle guard injection device
US8241255B2 (en) 2002-03-27 2012-08-14 Safety Syringes, Inc. Syringe with needle guard injection device
US8900200B2 (en) 2002-03-27 2014-12-02 Safety Syringes, Inc. Syringe with needle guard injection device
US20040116854A1 (en) * 2002-12-12 2004-06-17 Abulhaj Ramzi F. Syringe retractable needle and method
US20050273057A1 (en) * 2004-04-26 2005-12-08 Sergey Popov Catheter insertion apparatus with a needle tip protective system
US8372044B2 (en) 2005-05-20 2013-02-12 Safety Syringes, Inc. Syringe with needle guard injection device
US10232402B2 (en) 2017-04-04 2019-03-19 Robert B Bowers Piston driven one shot grease dispenser

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