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Publication numberWO2003047452 A1
Publication typeApplication
Application numberPCT/KR2002/002275
Publication date12 Jun 2003
Filing date4 Dec 2002
Priority date6 Dec 2001
Publication numberPCT/2002/2275, PCT/KR/2/002275, PCT/KR/2/02275, PCT/KR/2002/002275, PCT/KR/2002/02275, PCT/KR2/002275, PCT/KR2/02275, PCT/KR2002/002275, PCT/KR2002/02275, PCT/KR2002002275, PCT/KR200202275, PCT/KR2002275, PCT/KR202275, WO 03047452 A1, WO 03047452A1, WO 2003/047452 A1, WO 2003047452 A1, WO 2003047452A1, WO-A1-03047452, WO-A1-2003047452, WO03047452 A1, WO03047452A1, WO2003/047452A1, WO2003047452 A1, WO2003047452A1
InventorsSang-Kohn Chang
ApplicantSang-Kohn Chang
Export CitationBiBTeX, EndNote, RefMan
External Links: Patentscope, Espacenet
Bent structure for dental instruments
WO 2003047452 A1
Abstract
The present invention relates to a bent structure for a dental instrument, and in particular to a bent structure for a dental instrument which is preventing an extended portion of a dental instrument from being interfered with a patient's lip even when a dental instrument is used in all directions when diagnosing or operating a patient's teeth. The bent structure includes a first bent portion 31, a second bent portion 32 which is bent at a second bending point B, and a third bent portion 33 which is bent at a third bending point C.
Claims  (OCR text may contain errors)
What is claimed is:
1. In a dental instrument having a handle 10, an end operation portion 20
and an extended portion 30 between the handle 10 and the end operation portion
20, a 3-D bent structure for a dental instrument, comprising:
a first bent portion 31 which is formed in such a manner that the extended
portion 30 is bent at a first bending point A in a certain direction at a certain angle
and is bent at an angle of α with respect to an axial direction of the handle;
a second bent portion 32 which is bent at a second bending point B where
defines a certain length from the first bending point A in a certain direction at a
certain angle and is not parallel with respect to the extended portion 30 and the
first bent portion 31 and is bent in a longitudinal direction which becomes far away
with respect to the axial direction of the handle at an angle of α; and
a third bent portion 33 which is bent at a third bending point C which
defines a certain length from the second bending point B in a certain direction at a
certain angle and is not parallel with respect to the extended portion 30, the first
bent portion 31 and the second bent portion 32 and is bent in a longitudinal
direction which becomes close with respect to the axial direction of the handle at
an angle of α.
2. The structure of claim 1 , wherein the third bent portion 33 is bent at a third
bending point C on the second bent portion 32, and the axial direction of the same is parallel with respect to the axial direction of the extended portion 30.
3. The structure of claim 1 , wherein said angle of α is in a range of about
90 through 120.
Description  (OCR text may contain errors)

BENT STRUCTURE FOR DENTAL INSTRUMENTS

TECHNICAL FIELD

The present invention relates to a bent structure for a dental instrument,

and in particular to a bent structure for a dental instrument which is preventing an

extended portion of a dental instrument from being interfered with a patient's lip

even when a dental instrument is used in all directions when diagnosing or

operating a patient's teeth.

BACKGROUND ART

Generally, as shown in Figure 1 , a dental instrument is classified into a

diagnosing instrument, a periodontium instrument, and an operation instrument.

As shown in the first figure of Figure 1 , the instrument is adapted to locate

a decayed tooth and tartar, a stare of a pocket and divergence, and a diagnosis of

recovered state. As shown in the second figure of Figure 1 , the instrument is

adapted to be used as a diagnosis probe and is adapted to measure a depth of

periodontium, a height of attachment, a shape of anatomy, and a bleeding in gum.

As shown in the third figure of Figure 1 , the instrument is adapted to apply a

certain impact to teeth using a mallet.

The above diagnosis instrument, periodontium instrument and operation

instrument each are formed of an end portion(operation portion) contacting with teeth, a handle(or grip) designed to be gripped by a user, and an extended portion.

The above extended portion is formed of a bent portion for preventing an end

portion of the extended portion from being interfered with a patient's lip when an

end portion contacts with teeth.

However, in the above dental instruments, the bent portion is formed of

one or two bent portions. However, when seeing the bent portions from an axis of

the handle, the bent portions are arranged on the same plane, not 3-dimensional

construction.

For example, as shown in Figure 2, in the above dental instrument T, a

bent portion T1 may be easily used for contacting with a teeth D of an inner side of

a lip M, but each instrument used for a diagnosis or treatment is adapted to its

inherent purpose, namely, an end portion(or operation portion) of each dental

instrument is adapted to scratch, cut or groove a certain portion. Namely, each end

portion of the dental instruments has a certain function according to the usage.

In addition, in order to effectively use the end portion having a certain

direction with respect to various portions of the teeth, the dental instrument is

twisted or rotated at multiple angles. When rotating the instrument from the state

of Figure 2, the dental instrument becomes interfered with a patient's lip M as

shown by the imaginary line.

DETAILED DESCRIPTION OF THE PRESENT INVENTION Accordingly, the present invention provides a bent structure for a dental

instrument which overcomes the problems encountered in the conventional art.

It is an object of the present invention to provide a bent structure for a

dental instrument which is capable of preventing a dental instrument from being

interfered with a patient's lip even when a dental instrument is rotated in any

direction by forming a bent portion having a certain angle in an extended portion

between a handle and an end portion of a dental instrument.

It is another object of the present invention to provide a bent structure for a

dental instrument by which it is unnecessary to make a user's mouth open largely.

It is still further another object of the present invention to provide a bent

structure for a dental instrument in which a dental instrument may come close to a

portion that it is very difficult to contact using a dental instrument.

It is still further another object of the present invention to provide a bent

structure for a dental instrument by which an operator can easily perform a

surgical dental operation.

In order to achieve the above objects, in a dental instrument having a

handle 10, an end operation portion 20 and an extended portion 30 between the

handle 10 and the end operation portion 20, a 3-D bent structure for a dental

instrument includes a first bent portion 31 which is formed in such a manner that

the extended portion 30 is bent at a first bending point A in a certain direction at a

certain angle and is bent at an angle of α with respect to an axial direction of the handle; a second bent portion 32 which is bent at a second bending point B where

defines a certain length from the first bending point A in a certain direction at a

certain angle and is not parallel with respect to the extended portion 30 and the

first bent portion 31 and is bent in a longitudinal direction which becomes far away

with respect to the axial direction of the handle at an angle of α; and a third bent

portion 33 which is bent at a third bending point C which defines a certain length

from the second bending point B in a certain direction at a certain angle and is not

parallel with respect to the extended portion 30, the first bent portion 31 and the

second bent portion 32 and is bent in a longitudinal direction which becomes close

with respect to the axial direction of the handle at an angle of α; wherein the

angle of α is in a range of 90 to 120.

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention will become better understood with reference to the

accompanying drawings which are given only by way of illustration and thus are

not limitative of the present invention, wherein;

Figure 1 is a view illustrating an example of a conventional dental

instrument;

Figure 2 is a view for describing a state of use of a conventional dental

instrument;

Figure 3 is a view illustrating an example of a dental instrument according to the present invention;

Figure 4 is a view illustrating the construction for describing a bent state

according to the present invention;

Figure 5 is a view illustrating the construction of another bent state

according to the present invention; and

Figures 6A to 6C are views illustrating a state of use of a dental instrument

according to the present invention.

description of major elements of the drawings>

10: handle 20: end operation portion

30: extended portion 31 : first bent portion

32: second bent portion 33: third bent portion

PREFERRED EMBODIMENTS OF THE PRESENT INVENTION

The preferred embodiments of the present invention will be described with

reference to the accompanying drawings.

Figure 3 is a view illustrating an example of a dental instrument according

to the present invention, and Figure 4 is a view illustrating the construction for

describing a bent state according to the present invention.

The present invention may be adapted to the dental instrument formed of

a handle 10, an extended portion 30, and an end operation portion 20 formed at an end portion of the extended portion.

Namely, in any type of dental instruments formed of the handle 10, the end

operation portion 20 and the extended portion 30 between the handle 10 and the

end operation portion, the extended portion is formed of a first bent portion 31, a

second bent portion and a third bent portion 33. The first bent portion 31 is formed

in such a manner that the extended portion 30 is bent in a certain direction at a

first bending point A at a certain angle and is bent at an angle of α with respect to

an axial direction of the handle. The second bent portion 32 is bent at a second

bending point B of a portion where defines a certain length from the first bending

point A in a certain direction at a certain angle and is not parallel with respect to

the extended portion 30 and the first bent portion 31 and is bent at an angle of α

in a longitudinal direction which becomes far away with respect to the axial

direction of the handle. The third bent portion 33 is bent at a third bending point C

of a portion where defines a certain length from the second bending point B in a

certain direction at a certain angle and is not parallel with respect to the extended

portion 30, the first bent portion 31 and the second bent portion 32 and is bent in a

longitudinal direction which becomes close with respect to the axial direction of the

handle at an angle of α.

The above angle of α is preferably in a range of about 90 to 120. More

preferably, the angle of α is 110.

The present invention may be implemented based on the construction of Figure 5.

Namely, as shown in Figure 5, the first, second and third bent portions are

sequentially formed. During the formation of the third bent portion 33, when it is

bent from the third bending point C in the second bent portion 32, the axial

direction of the bent portion is on the same axis as the axial direction of the

extended portion 30.

In the dental instrument of the present invention, since the extended

portion 30 is bent at first through third bending points, even when the dental

instrument is moved in the mouth with respect to a certain tooth in any directions,

the dental instrument is not interfered with respect to a patient's lip as shown in

Figures 6A and Figure 6C.

Namely, as shown in Figure 6A, the end operation portion 20 approaches

in a direction of the upper surface of a tooth. At this time, the second bending point

B of the extended portion 30 is positioned at the outermost portion. Since a

patient's lip contacts with the same, the patient need not largely open his mouth.

In addition, as shown in Figure 6B, the end operation portion 20

approaches in the direction of the side lower portion in the outside of the teeth. At

this time, since the first bending point A is positioned in the outermost portion, the

lip contacts with the same. Therefore, at this time, the patient need not largely

open the mouth.

As shown in Figure 6C, the end operation portion 20 approaches in a front side surface of the teeth. At this time, since the second bending point B or the third

bending point C is positioned in the outermost portion, the patient need not largely

open the mouth compared to the conventional art.

As shown in Figure 5, the axial direction of the third bent portion 33 bent at

the third bending point C on the second bent portion 32 is in the same center as

the axial direction of the extended portion 30 for the reason that in the case that a

force is transferred to the end operation portion 20 through the extended portion

30 from the handle 10, it is needed to impact a certain force using the mallet.

For reference, the extended portion according to the present invention

may be effectively adapted to the extended portions formed in various hand

pieces(cutting tools for teeth and a motor having a grinding device, etc.) which are

installed in a dental chair unit including a diagnosis device, operation device, etc.

As described above, in the dental instrument according to the present

invention, the extended portion formed from the handle to the end operation

portion is bent more than two times, and the bent direction of the same is

implemented in multiple directions based on a 3-dimensional structure. Therefore,

when the dental instrument approaches to a tooth or gum in any direction, it is

possible to prevent the dental instrument from being interfered with a patient's lip.

Therefore, the patient need not largely open his mouth. In addition, it is

possible to easily approach to a certain deep inner portion of the mouth for

operation, so that it is easy to perform various dental operations. As the present invention may be embodied in several forms without

departing from the spirit or essential characteristics thereof, it should also be

understood that the above-described examples are not limited by any of the details

of the foregoing description, unless otherwise specified, but rather should be

construed broadly within its spirit and scope as defined in the appended claims,

and therefore all changes and modifications that fall within the meets and bounds

of the claims, or equivalences of such meets and bounds are therefore intended to

be embraced by the appended claims.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
JP61021506U * Title not available
JP2001333926A * Title not available
US4465461 *12 Aug 198214 Aug 1984Schuetz WinfriedDental-orthodontic device
US6309219 *17 Feb 200030 Oct 2001Karl Schumacher Dental Instrument Company, Inc.Periotome
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
EP1909681A2 *3 Aug 200616 Apr 2008John ChaoPeriodontal surgery operation methods and instruments
EP1909681A4 *3 Aug 200623 Sep 2009John ChaoPeriodontal surgery operation methods and instruments
US80072783 Aug 200630 Aug 2011John ChaoPeriodontal surgery operation methods and instruments
US820209217 Sep 200819 Jun 2012John ChaoPeriodontal surgery operation methods and instruments
Classifications
International ClassificationA61C5/14, A61C3/00
Cooperative ClassificationA61C3/00, A61C5/90
European ClassificationA61C3/00
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