US3667125A - Dental handpiece - Google Patents

Dental handpiece Download PDF

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Publication number
US3667125A
US3667125A US854140A US3667125DA US3667125A US 3667125 A US3667125 A US 3667125A US 854140 A US854140 A US 854140A US 3667125D A US3667125D A US 3667125DA US 3667125 A US3667125 A US 3667125A
Authority
US
United States
Prior art keywords
sleeve
shaft
outer casing
casing sleeve
rotation
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 - Lifetime
Application number
US854140A
Other languages
English (en)
Inventor
Michel Seigneurin
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.)
Micro Mega SA
Original Assignee
Micro Mega SA
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 Micro Mega SA filed Critical Micro Mega SA
Application granted granted Critical
Publication of US3667125A publication Critical patent/US3667125A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C1/00—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design
    • A61C1/08—Machine parts specially adapted for dentistry
    • A61C1/14—Tool-holders, i.e. operating tool holders, e.g. burr holders

Definitions

  • An improved micrometer-driven dental handpiece consists of a cylindrical body which includes an inner sleeve and an outer sleeve slidingly fitting over the inner sleeve, the two sleeves being maintained axially relative to each other.
  • a detent slidingly mounted on the outer sleeve releasably interconnects it with a gripper-locking sleeve and concurrently actuates a mechanism by means of which the shaft of the handpiece may be intercoupled with the inner sleeve, whereupon the locking or releasing of the cutting tool is efiected by turning the outer and inner sleeve relatively to each other.
  • SHEET 10F 2 FIG] DENTAL HANDPIECE This invention relates to handpieces used in surgical and dental work. More particularly it relates to handpieces powered by micromotors.
  • a handpiece characterized in that the cutter may be locked in place or released by the displacement of a mobile member slidingly mounted on the body of the handpiece, and by subsequent rotation of said body relatively to the shaft of the handpiece.
  • the body of the handpiece comprises a first outer sleeve in which is slidingly inserted a second inner sleeve and a movable member slidingly mounted onto said outer sleeve, said movable member carrying a projection which, when the moving member is pushed in the longitudinal direction, engages toothlike projections on a locking sleeve and at same time intercouples by means of a toothed sliding body the inner sleeve with the shaft of the handpiece.
  • FIG. 1 is a longitudinal sectional view of the handpiece according to the invention.
  • FIG. 2 is a perspective view of the shaft, locking sleeve and sliding piece shown in FIG. 1. 7
  • the handpiece 1 includes an inner sleeve 3 which slidingly fits into an outer sleeve 2.
  • the relative position of the sleeves with respect to each other in the longitudinal direction is maintained by a locking mechanism such as shown at 4.
  • the mechanism consists of a bent spring engaging two grooves in registry, of which one is formed on the inner wall of sleeve 2 and the other on the outer wall of sleeve 3.
  • the groove on the inner wall of sleeve 2 has an opening 5 extending therethrough.
  • the spring may be pushed inward, thereby disengaging the two sleeves and enabling the outer sleeve 2 to slide on the inner sleeve 3.
  • the handpiece is suitable for hooking onto all types of micromotors and onto a wrist-joint by means of any fastening device 6 for example as disclosed in French Pat. No. 1,483,766 ofFeb. 7, 1966.
  • a bearing 7 which supports the shaft 8 of the handpiece.
  • the shaft 8 is coupled to the shaft of the motor by a screw type coupling arrangement 25 and is driven by the motor.
  • the shaft 8 has a threaded portion 9 onto which is screwed a locking sleeve 10.
  • the sleeve 10 terminates in a conventional conical portion 11 and serves to lock or release the cutter (not shown) inserted therein by a displacement in the axial direction.
  • the locking sleeve 10 is rotatably supported by a bearing 1 I. and has its rear end formed with castellations or teeth 12. These teeth cooperate with the lower end of a screw 13 which rigidly interconnects an inner sliding ring 14 with a pushing member or detent l5 slidably mounted on the sleeve 2 and capable of movement within a slot 21.
  • a spring 23 interposed between the bearing 7 and the sliding body 16 serves to return the latter, as well as the ring 14 and detent 15, to their original position, when the detent 15 is released whereby the handpiece 1 is again ready for use.
  • the teeth 18 on the sliding piece 16 may be omitted altogether and the piece may be intercoupled with the shaft 8 by means of grooves in said shaft.
  • the holder 22 may be designed either for long cutters such as normally used with handpieces or else be adapted to hold a short cutter having an offset angle.
  • a casing comprising a normally stationary outer casing sleeve providing a hand grip for the handpiece and an inner casing sleeve rotatably disposed partly in said outer casing sleeve and having a portion extending beyond an end of said outer casing sleeve, a shaft rotatably supported in said inner casing sleeve for rotation relative to both of said casing sleeves, means for releasably connecting said casing to a micromotor having a rotor, means for coupling one end of said shaft to the rotor of said micromotor for rotation inside said casing, means at the other end of said shaft for holding a tool, said tool holding means comprising a locking sleeve rotatable relative to said shaft in one direction to secure a tool and in the opposite direction to release a tool, and means operable from outside said casing for temporarily connecting said locking sleeve for rotation with one of said casing sleeve
  • said temporary connecting means comprises teeth on said locking sleeve, detent means on the outside of said outer casing sleeve movable axially of said outer casing sleeve, and a pin extending inwardly from said detent means in position to engage said teeth on said locking sleeve when said detent means is moved axially of said outer casing sleeve to connect said locking sleeve for rotation with said outer casing sleeve.
  • said temporary connecting means comprises a connecting sleeve inside said outer casing sleeve and cooperating means on said shaft and said inner casing sleeve, said connecting sleeve being movable axially between a position in which it connects said shaft for rotation with said inner casing sleeve and a position in which said shaft and inner casing are disconnected.
  • a dental handpiece according to claim 2 comprising spring means for biasing said connecting sleeve to a position in which said shaft and said inner casing sleeve are disconnected.
  • a dental handpiece according to claim 2 in which said inner casing sleeve and said shaft are provided with teeth and in which said connecting sleeve has teeth engageable with said teeth of said shaft and said inner casing sleeve when said connecting sleeve is moved axially to a position for connecting said shaft and inner casing sleeve.
  • said temporary connecting means comprises a connecting sleeve inside said outer casing sleeve and cooperating means on said shaft and said inner casing sleeve, said connecting sleeve being movable axially between a connecting position in which it connects said shaft for rotation with said inner casing sleeve and a released position in which said shaft and inner casing sleeve are disconnected, and means associated with said detent means for moving said connecting sleeve from released to connecting positions when said detent means is moved axially to connect said locking sleeve for rotation with said outer casing sleeve.
  • said means associated with said detent means comprises an inner sliding ring slidable axially inside said outer casing sleeve and connected to said detent means.
  • a dental handpiece according to claim 1 in which said outer casing sleeve has an inner circumferential groove and said inner casing sleeve has an outer circumferential groove registering with said groove of said outer casing sleeve and in which a locking spring disposed in said grooves connects said inner and outer casing sleeves to lock them against relative axial movement while permitting relative rotation.
  • a dental handpiece according to claim 8 in which said outer casing has a hole opening into said groove for insertion of an instrument for engagement with said locking spring to depress said spring and thereby release said outer casing sleeve from said inner casing sleeve.

Landscapes

  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
  • Mechanical Operated Clutches (AREA)
US854140A 1968-09-19 1969-08-29 Dental handpiece Expired - Lifetime US3667125A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR166708 1968-09-19

Publications (1)

Publication Number Publication Date
US3667125A true US3667125A (en) 1972-06-06

Family

ID=8654714

Family Applications (1)

Application Number Title Priority Date Filing Date
US854140A Expired - Lifetime US3667125A (en) 1968-09-19 1969-08-29 Dental handpiece

Country Status (7)

Country Link
US (1) US3667125A (ru)
CH (1) CH487638A (ru)
DE (1) DE1945688C3 (ru)
FR (1) FR1588923A (ru)
GB (1) GB1275661A (ru)
SE (1) SE348365B (ru)
SU (1) SU510130A3 (ru)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3803716A (en) * 1971-04-13 1974-04-16 Micro Mega Sa Handpieces for dental surgery and the like
US3835858A (en) * 1972-09-05 1974-09-17 Weck & Co Inc Edward Surgical air drill
US6012922A (en) * 1997-09-08 2000-01-11 Tulsa Dental Products Inc. Axial displacement bearing connecting a multi-section shaft for quick removal of dental tools from a handpiece

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3827149A (en) * 1972-09-15 1974-08-06 Stryker Corp Dental handpiece

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1189184A (en) * 1909-06-30 1916-06-27 Howard A Whiteside Dental drill.
US2053056A (en) * 1932-07-26 1936-09-01 Howard A Whiteside Combined surgical motor and handpiece
US3210847A (en) * 1962-09-04 1965-10-12 Prufer Albert Dentist's drill
US3448309A (en) * 1965-11-29 1969-06-03 Siemens Ag Miniature electric motor
US3509629A (en) * 1966-10-01 1970-05-05 Mitsubishi Electric Corp Portable and adjustable contra-angle dental instrument
US3530586A (en) * 1964-02-27 1970-09-29 Sybron Corp Speed reducer construction for driving dental tools
US3545776A (en) * 1968-06-18 1970-12-08 Jacobs Mfg Co Combined chuck spindle and chuck locking collar

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1189184A (en) * 1909-06-30 1916-06-27 Howard A Whiteside Dental drill.
US2053056A (en) * 1932-07-26 1936-09-01 Howard A Whiteside Combined surgical motor and handpiece
US3210847A (en) * 1962-09-04 1965-10-12 Prufer Albert Dentist's drill
US3530586A (en) * 1964-02-27 1970-09-29 Sybron Corp Speed reducer construction for driving dental tools
US3448309A (en) * 1965-11-29 1969-06-03 Siemens Ag Miniature electric motor
US3509629A (en) * 1966-10-01 1970-05-05 Mitsubishi Electric Corp Portable and adjustable contra-angle dental instrument
US3545776A (en) * 1968-06-18 1970-12-08 Jacobs Mfg Co Combined chuck spindle and chuck locking collar

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3803716A (en) * 1971-04-13 1974-04-16 Micro Mega Sa Handpieces for dental surgery and the like
US3835858A (en) * 1972-09-05 1974-09-17 Weck & Co Inc Edward Surgical air drill
US6012922A (en) * 1997-09-08 2000-01-11 Tulsa Dental Products Inc. Axial displacement bearing connecting a multi-section shaft for quick removal of dental tools from a handpiece

Also Published As

Publication number Publication date
DE1945688A1 (de) 1970-04-30
SE348365B (ru) 1972-09-04
SU510130A3 (ru) 1976-04-05
FR1588923A (ru) 1970-03-16
GB1275661A (en) 1972-05-24
DE1945688B2 (de) 1974-02-14
DE1945688C3 (de) 1980-01-03
CH487638A (fr) 1970-03-31

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