Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberUS3928916 A
Publication typeGrant
Publication dateDec 30, 1975
Filing dateNov 14, 1973
Priority dateNov 21, 1972
Publication numberUS 3928916 A, US 3928916A, US-A-3928916, US3928916 A, US3928916A
InventorsHansson Tomas Wilhelm
Original AssigneeHansson Tomas Wilhelm
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Combination implement for dental use
US 3928916 A
Abstract
There is disclosed a dental instrument combining a dental mirror and a dental extractor for sucking out saliva accumulating in the mouth of a patient. The mirror has a stem extending from its periphery and the extractor comprises a shallow bowl having in its wall one or more suction holes. A handle is secured to the bowl. This handle has a lengthwise bore communicating with the interior of the bowl and a lengthwise groove in its outer surface. The stem on the mirror is fitted into the groove and also press-fitted into the bowl at the rim thereof thereby closing the top opening of the bowl. By slipping a suction hose upon the handle the stem is locked in the groove and saliva can be sucked out via the bore through the handle and the hose in the wall of the bowl.
Images(1)
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

United States Patent Hansson Dec. 30, 1975 COMBINATION IMPLEMENT FOR DENTAL Primary ExaminerRobert Peshock USE Attorney, Agent, or FirmHane, Baxley & Spiecens [76] Inventor: Tomas Wilhelm Hansson, Ganla Ornasgatan 14, Amal, Sweden [57] ABSTRACT [22] Filed: Nov. 14, 1973 There is disclosed a dental instrument combining a Appl. No.: 415,620

dental mirror and a dental extractor for sucking out saliva accumulating in the mouth ofa patient. The mirror has a stem extending from its periphery and the extractor comprises a shallow bowl having in its wall one or more suction holes. A handle is secured to the bowl. This handle has a lengthwise bore communicating with the interior of the bowl and a lengthwise groove in its outer surface. The stem on the mirror is fitted into the groove and also press-fitted into the bowl at the rim thereof thereby closing the top opening of the bowl. By slipping a suction hose upon the handle the stem is locked in the groove and saliva can be sucked out via the bore through the handle and the hose in the wall of the bowl.

4 Claims, 3 Drawing Figures US. Patent Dec. 30, 1975 3,928,916

COMBINATION IMPLEMENT FOR DENTAL USE The present invention relates to a combination implement or instrument for dental use. The implements which the. combination implement comprises are a saliva extractorand a mirror.

A dentist who has modern working methods most often works sitting down, with the patient lying down in the dental chair. However, a prerequisite for this procedure is that a strong saliva extractor is available, which can remove saliva and waste, which otherwise can be aspirated by the patient. The conventional type of extractor, which is suspended in the lower jaw of the patient is not effective when the patient is lying down. It is therefore often necessary'to have a nurse sitting by, using a strong power-operated saliva extractor, while the dentist is drilling with a water-ejecting high-speed drill. The situation becomes still more complicated when a dentist is compelled to work alone, without the assistance of a nurse. The dentist must then work in such a way that he first drills for a while, and during this period of time the patients mouth may be filled up with water. The dentist has to put down his mirror, which is an implement that is needed for practically all stages of the treatment. After having put down the mirror he must use the saliva extractor. When this has been done, he can again pick up his mirror and start to drill anew. It will thus be noted that, using a conventional implement, the working cycle will involve more inconvenience for the dentist when he tries to treat without the assistance of a nurse.

If the dentist has the advantage of having a nurse at his disposal, the nurse will have to sit on the other side of the dental chair and handle the extractor at the same time as the dentist is drilling. Unfortunately, it is not possible for the nurse to see as far into the mouth as the dentist, and she will have to go over to his side in order to be able to carry out the extraction of saliva and the like, which disturbs the dentist in his work.

The purpose of the present invention is to provide a combination implement, in which the mirror and the saliva extractor is one single implement. With such an implement it will be possible for the dentist to work without interruptions and without having to put down the mirror and without needing a nurse to handle the saliva extraction, as he can arrange for the saliva extraction with the aid of his mirror.

According to the invention, the saliva extractor is shaped similar to a spoon. The opening of the bowl of the spoon is covered with the aid of a conventional dentists mirror, which is provided with a short handle, and the actual mirror is round. The saliva extractor has a groove for locating the dentists mirror. Between the bottom of the spoon and the rear side of the mirror this is a cavity. In the bottom of the bowl of the spoon there are a number of holes, through which saliva is sucked into the cavity, from where it thereafter passes through the outlet connection of the saliva extractor.

The upper edge of the concave part of the bowl of the spoon is shaped to receive and retain the round dentists mirror, which can be secured in a known way. When the mirror is fastened to the bowl of the spoon, the opening of the bowl of the spoon can be entirely closed. However, it is an advantage, according to the invention, if somewhere, preferably at the point of the spoon, an opening is formed between the periphery of the mirror and the upper edge of the bowl of the spoon, and that this opening is then so large that residue of tooth filling and drilled out material can pass through the opening. The opening should appropriately be arranged at the point of the spoon.

The front part of the saliva extractor, i.e., the spoon, may appropriately be made of plastic, and as a disposable item, but it is obvious that it can also be made of metal. The actual dentists mirror, on the other hand, is a standard product, which normally is not a disposable item. It usually consists of a metal mirror and can be used time and again after-sterilizing.

One of the greatest advantages of the combination implement according to the present invention is that externally it has only smooth surfaces, which cannot injure a patients sensitive mucous tissues in the mouth.

The present invention will be described in more detail in conjunction with the attached drawing, in which FIG. 1 shows a conventional dentists mirror intended to be inserted in a handle,

FIG. 2 shows the lower part of a saliva extractor in cross-section with a mirror, and

FIG. 3 shows a combination instrument according to the present invention ready for use.

In the figures, 1 designates a round standard dentists mirror arranged in a metal holder, provided with a short stem 2.

In FIG. 2, a spoon-like part 3 is shown, which constitutes the suction nozzle of the saliva extractor. The spoon has a bowl 4 and a lengthwise handle 5. The handle 5 is made with a groove 6 to receive the mirror stem 2. In the bowl 4 of the spoon a number of through holes 7 for sucking saliva into the bowl have been arranged, and extending from the bowl itself there is an outlet bore 8. A suction pipe I0 can be slid upon the handle of the spoon and into connection with bore 8.

The combination implement described above functions in the following way.

The mirror 1 is placed in the opening of the bowl of the spoon so that the mirror and the edge of the bowl of the spoon will be more or less in the same plane, and the stem 2 is placed in the groove 6. At the edge of the bowl of the spoon there can then be a groove 12, recess or the like, in which the mirror 1 can be placed with a pressure fit or in a snapped-in condition. It is assumed that the bowl of the spoon has an opening corresponding to the form of the mirror. There is provided between the periphery of the mirror and the edge of the bowl of the spoon an elongate opening 9 substantially in the plane of the mirror. This opening is sufficiently large to receive residue accumulating in the mouth of the patient. When the mirror 1 has been set in place in the spoon 3, the suction pipe 10 is slipped on, and it will then be obvious that the suction pipe will also secure the stem 2 of the mirror in the spoon 3. The combination implement is now ready for use, and the dentist thus only needs to hold the suction pipe 10 and will then obtain both saliva extraction and at the same time an aid for viewing the mouth cavity when the patient is to be treated. The dentist sucks up saliva through the holes 7 and can extract residue, if any, through the opening 9. When the treatment of the patient has been finished, the dentist simply removes the spoon and mirror, and the spoon can then be discarded, while the mirror can be sterilized in an autoclave, to be ready for re-use.

I claim:

I. A dental instrument comprising in combination:

a dental mirror means having; a stem extending from the periphery of the mirror;

a dental extractor meansfor sucking out saliva accumulating in the mouth of a patient;

said extractor means comprising a shallow bowl having in'its wall at least one suction hole for ingress of saliva accumulating in the mouth of a patient and including a handle extending from the bowl, said handle having therethrough a lengthwise bore communicating with the space within the bowl and a lengthwise groove in the outside surface of the handle;

the peripheral outlines of the mirror and the rim of the bowl being so correlated that the mirror is fittable with a pressure fit into the bowl along the rim thereof for releasably attaching the mirror to the bowl thereby covering the open side of the bowl and the groove in the bowl handle being so correlated that the stem is fittable into said groove in the handle simultaneously with pressure fitting of the mirror into the bowl for locking the stem in 4 the groove by sliding a suction hose upon said handle.

2. The dental instrument according to claim 1 wherein a rim portion of the extractor bowl defines a peripherally elongate gap between said rim portion and the juxtaposed peripheral portion of the mirror, said opening providing for ingress of solid particles into the bowl space for sucking out said particles together with saliva.

3. The dental instrument according to claim 1 wherein the mirror and the bowl rim each have a circular periphery, the diameter of the mirror being in excess of the minimum diameter at the rim of the bowl.

4. The dental instrument according to claim 3 wherein the wall of the bowl includes a circumferential groove for retaining therein the rim of the mirror when press-fitted upon the bowl.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US3052031 *Mar 31, 1960Sep 4, 1962Piscitelli Vincent JMirror-type dental instrument with vacuum means for keeping a dry surface
US3102338 *Dec 18, 1961Sep 3, 1963Warriner Joe FDental mirror and aspirator
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4925391 *Mar 4, 1986May 15, 1990Berlin GoeranDental instrument
US5230622 *Aug 11, 1992Jul 27, 1993Brossoit A DouglasArticulated mirror attachment for dental suction tips
US5295826 *Feb 2, 1993Mar 22, 1994Yandell Candice ADental mirror with aspirating and rinsing means
US5762496 *Aug 30, 1995Jun 9, 1998Koping Industri-Plast AbDisposable dental saliva ejector
US5951284 *Mar 10, 1998Sep 14, 1999Lake; James A.Intraoral instrument
US6932601Nov 18, 2003Aug 23, 2005Debra Kay FriderDental evacuation mirror
US7553158Jun 30, 2009Debra Kay FriderDental evacuation mirror
US8133052 *Apr 2, 2009Mar 13, 2012Emmons Iii Donald LDental mirror with mirror-cleaning suction
US20050106527 *Nov 18, 2003May 19, 2005Frider Debra K.Dental evacuation mirror
US20050239014 *Jun 22, 2005Oct 27, 2005Frider Debra KDental evacuation mirror
US20060217657 *Mar 24, 2005Sep 28, 2006Richard YacowitzSurgical suction device
US20070148611 *Feb 7, 2007Jun 28, 2007Frider Debra KDental evacuation mirror
US20130302750 *Jan 20, 2012Nov 14, 2013Philippe BagurDevice for picking and placing small parts, particularly in the field of odontology or microsurgery
CN103908218A *Apr 15, 2014Jul 9, 2014许海燕Demisting odontoscope
WO2004043243A1 *Oct 30, 2003May 27, 2004SwellDevice for mounting a dental mirror
WO2015039752A1 *Sep 18, 2014Mar 26, 2015Stephan ClasenMirror sucker having a solid mirror
Classifications
U.S. Classification433/31, 433/91
International ClassificationA61B1/247, A61B1/24
Cooperative ClassificationA61B1/247, A61C17/043
European ClassificationA61C17/04B, A61B1/247