WO2019135222A1

WO2019135222A1 - Device for use in endodontic procedure

Info

Publication number: WO2019135222A1
Application number: PCT/IL2019/050006
Authority: WO
Inventors: Shlomo BERKOVIC; Boris Gorodnitsky
Original assignee: Berkovic Shlomo; Boris Gorodnitsky
Priority date: 2018-01-03
Filing date: 2019-01-02
Publication date: 2019-07-11

Abstract

A cleaning and shaping device for endodontic treatment, in which a wire thread is distributed to form two domains. One is a sideways bifurcating and expanding domain, the other is a strait domain in which the two wire threads strands are intertwined. A handle for harboring the energizing components relating to the dynamic mechanical aspects of said device.

Description

DEVICE FOR USE IN ENDODONTIC PROCEDURE

CROSS-REFERENCE TO RELATED APPLICATIONS

The present application claims the benefit of priority to US Provisional Patent Application Serial Number 62/613,067, filed January 03, 2018, entitled "DEVICE FOR USE IN ENDODONTIC PROCEDURE" The aforementioned application is incorporated herein by reference.

TECHNICAL FIELD

The present invention generally relates to a device for use in endodontic dentistry.

BACKGROUND ART

In case of infected or damaged tooth, often times the root canals are to be treated in the procedure sometimes referred to as endodontic procedure. The root canals have to be cleaned and shaped in order to remove organic infectious or damaged tissue, and in this respect shaping the canal assist cleaning and subsequently filling it up.

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention will be understood and appreciated more fully from the following detailed description taken in conjunction with the appended drawings in which: Figure 1 is a schematic isometric illustration of a cleaning and shaping device (CSD) in accordance with the present invention.

Figure 2 is a schematic isometric illustration of a CSD with a transparent view of the handle.

Figure 3 is a schematic isometric illustration of Tubular ending off a device of the invention.

Figure 3A is a schematic isometric illustration of Tubular plastic stopper as in some embodiments of the invention.

Figure 4 is is a schematic illustration of a corrugated type TCEC of the invention.

DISCLOSURE OF THE INVENTION

A cleaning and shaping device (CSD) for tooth canal is shown in Fig. 1.

Handle 22 is a structural component which permits the seizing and applying the tooth canal engaging component (TCEC) to carry out its task in the tooth canal. The other major component of the CSD of the invention is a resilient wire thread 24 forming two strands partially intertwined as will be explained below. The wire thread is distributed in two differently shaped domains. One domain is a TCEC 26 in which the strands are separated sideways, bifurcating while in the other domain the strands are typically intertwined (in what may be referred to as double helical pair) forming an elongated, straight metallic domain 28. The two domains form each a sector of a continuos thread. More structural and functional details of the CSD are described next. In general terms the handle 22 harbours all the energizing components of the device of the invention related to dynamic mechanical aspects of the device. Within handle 22, chamber 32 is allocated for functionally storing a battery and (in some embodiments) an electric actuator for spinning wire 24.

Typically the electric actuator, in the relevant embodiments, is disposed within handle 22 such as adjacent to the battery. The spinning action is described with reference to double headed arrow 34, which shows that in principle, wire 24 is capable of spinning in either one of two directions. Ring 38 constricts intertwined wire thread 28 and is used for indicating to the dental practitioner operating the device of the invention a limitation to the depth to which thread 28 is to be pushed inside the tooth canal. Ring 38 is capable of being moved along thread 28, manually, in the directions as indicated by arrow 42. Structured sector 48 of handle 22 is made to allow a user of the CSD to hold it while replacing an old or worn out wire 24. The actual release can be carried out manually or by using a tool such as a forceps to hold sector 48 or turn it the release the unwanted wire 24 and fit in a replacement wire.

In Fig. 2 a transparent view of the handle part of the CSD is presented, in which the layout of wire thread 28 inside the CSD is shown. Functionally, wire thread 28 is coaxial with cylindrical handle 22, whereby structured sector 48 is traversed longitudinally. In chamber 32, where the actuator typically resides (not shown) , wire thread 28 is terminated at point 54. Rear end tubular part 62 of handle 22 is a part that couples with the hand piece of a dentist in some embodiments by tucking inside a recess therein a stopper for receiving torque. MATERIALS OUT OF WHICH THE CSD CAN BE MADE

Metal is an obvious choice. Especially stainless steel is a preferable option for providing the cleaning, scraping and generally conditioning the canal for filling and completing the treatment. However, also hard plastic materials can be employed for the same task.

Among metals, in addition to stainless steel, Nitinol, tungsten alloys, specifically tungsten - iron combinations are plausible.

Surface processing of the metal structure may provide additional effectiveness to the abrasive properties of the TCES. Such can be achieced by abrasive blasting and specifically sand blasting

RATE OF ROTATION

In order for the TCEC 26 to perform best, a rotation rate which is optimal is advisable, somewhat depending on the metal out of which TCEC 26 is made.

POWER TRANSFER MECHANISM

In some embodiments, the CSD of the invention derives power from a dental hand piece which utilizes an electric motor or an air turbine. The rear, tubular part 62 of the CSD is tucked inside a recess in the dental handpiece.

In order to insure firm contact and restraint of the tubular part 62 with and within the receiving recess in the hand piece, the tubular ending 62 can be cramped and by so enlarging its diameter locally thereby increasing the resilient force applied by the tubular ending 62 on the inside walls of the receiving recess of the hand piece. Another option is described with reference to Figs.3. and 3A Tubular ending 62 has an open lumen into which stopper 68 can be pushed to a certain depth in the direction of arrow 70.

To manufacture the stopper, it is typically sliced from a plastic cylinder. This cylinder is a thermoplastic resin, which upon heating become softer and workable to form a swelling 72, as can be seen in Fig. 3A. This swelling protrudes outside of of tubular ending 62 when stopper 68 is pushed inside of handle 22 as a result of force applied in the direction of arrow 80. Stopper 68 hooks up to the hand piece of a dentist, in order to transfer torque to wire thread 28.

Additional properties of the TCEC

In order to increase the effectivity of the CSD, more traits can be bestowed upon the TCEC .Corrugated structural outlines of the TCEC, As can be seen in Fig. 4 facilitate the penetration of the CSD into crevices and grooves which may line on the inner surface of a root canal.

Claims

1. A cleaning and shaping device for endodontic treatment, comprising:

^■ a wire thread is distributed to form two domains;

^■ a sideways bifurcating and expanding sector continuous with the other domain;

^■ a strait domain in which the two wire threads strands are intertwined,

^■ a handle for harboring the energizing components relating to the dynamic mechanical aspects of said device.

2. The device as in claim 1 , wherein said handle comprises:

• an actuator for said wire thread, and

• a battery.

3. The device as in claim 1 , wherein said handle is adapted for receiving torque from a hand piece of a dentist through a stopper adapted to fit in said handle and to hook up into a hand piece of a dentist .

4. The device as in claim 1 , wherein a ring capable of being moved along said straight domain of said wire thread is used to indicate to the operator operating said device a limitation to the depth to which wire thread can be pushed inside the tooth canal being treated.

5. The device as in claim 1 , wherein said sideways bifurcating and expanding domain has corrugated structural outlines.