GB826816A - Improvements in and relating to mouth mirrors - Google Patents

Improvements in and relating to mouth mirrors

Info

Publication number
GB826816A
GB826816A GB5020/58A GB502058A GB826816A GB 826816 A GB826816 A GB 826816A GB 5020/58 A GB5020/58 A GB 5020/58A GB 502058 A GB502058 A GB 502058A GB 826816 A GB826816 A GB 826816A
Authority
GB
United Kingdom
Prior art keywords
cock
nozzle
water
mirror
handle
Prior art date
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
Application number
GB5020/58A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of GB826816A publication Critical patent/GB826816A/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/24—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor for the mouth, i.e. stomatoscopes, e.g. with tongue depressors; Instruments for opening or keeping open the mouth
    • A61B1/247—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor for the mouth, i.e. stomatoscopes, e.g. with tongue depressors; Instruments for opening or keeping open the mouth with means for viewing areas outside the direct line of sight, e.g. dentists' mirrors
    • A61B1/253—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor for the mouth, i.e. stomatoscopes, e.g. with tongue depressors; Instruments for opening or keeping open the mouth with means for viewing areas outside the direct line of sight, e.g. dentists' mirrors with means for preventing fogging

Abstract

826,816. Dental mirrors. CODONI, A. Feb. 17, 1958 [Feb. 22, 1957; Oct. 25, 1957], No. 5020/58. Class 81 (2). [Also in Group XXIII] A dental mirror has separate conduits for supplying liquid and gas and control means enabling liquid and gas to be supplied alternately through a common conduit to the mirror surface for cleaning purposes. Pipes 2, 3 for water and compressed air, respectively, are disposed within the handle 1 of the mirror. The pipes 2, 3 open into a conical bore 5 in which a three-way cock 4 having a passage 29 is rotatably mounted. A leaf spring 6 holds the cock 4 in the bore 5. A pin 27 engages a groove 28 in an upwardly projecting control knob 26 of the cock 4 to limit its rotation. In one limiting position of the cock 4 water flows from the pipe 2 through the passage 29 to a bore 17 at the forward end of the handle and thence through a pipe 18 which is detachably connected in the bore 17 and is carried by a detachable mounting member 19 to a nozzle 23. The nozzle 23 is located near the intersection of the longitudinal axis of the handle 1 and the plane comprising the edge of the mirror surface 22 and directs water or gas against the mirror surface. In the other limiting position of the cock 4, air from the other pipe 3 passes to the nozzle 23. Normally the cock 4 is set between the two limiting positions so that flow of air and water to the nozzle 23 is prevented. The rear ends 12 (not shown) of the pipes 2, 3 project from the handle 1 and are connected to flexible water and air supply pipes. The mirror 21 has a support 20 screwed into the mounting portion 19 which may be fitted on the handle in either of two positions so that the mirror may face in either of two opposite directions. In an alternative construction valves (not shown) control the flow of water and air from the pipes 2, 3 to the nozzle. A cylinder with a radial bore replaces the three-way cock and on rotation in one direction from a neutral position opens one valve, rotation in the opposite direction opening the other valve.
GB5020/58A 1957-02-22 1958-02-17 Improvements in and relating to mouth mirrors Expired GB826816A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE826816X 1957-02-22

Publications (1)

Publication Number Publication Date
GB826816A true GB826816A (en) 1960-01-20

Family

ID=6747855

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5020/58A Expired GB826816A (en) 1957-02-22 1958-02-17 Improvements in and relating to mouth mirrors

Country Status (1)

Country Link
GB (1) GB826816A (en)

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