Dental handpiece capable of automatically cleaning scraps

Abstract

A dental handpiece capable of automatically cleaning scraps relates to the technical field of medical instruments and comprises a handpiece body handle, a handpiece head mounted at the left end of the handpiece body handle and a dental drill bit mounted on the handpiece head, a scrap cleaning ring movably matched with a drill handle of the dental drill bit is sleeved on the drill handle of the dental drill bit, and a positioning protruding column is fixed at the upper end of the scrap cleaning ring. The machine head is provided with a positioning hole allowing the positioning protruding column on the chip removing ring to be inserted therein, an inner lantern ring which is concentrically arranged is arranged in the chip removing ring in a sleeved mode, the chip removing ring is in sliding fit with the inner lantern ring, and the chip removing ring is provided with a brake pin used for braking the inner lantern ring. A plurality of elastic protruding blocks protruding inwards are arranged on the inner lantern ring, the number of the elastic protruding blocks is consistent with the number of threaded grooves in the dental drill bit, and a chip removing protruding head protruding inwards is fixed to the inner end of each elastic protruding block. According to the equipment provided by the utility model, the dental drill bit can be conveniently cleaned.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field, in particular to a kind of dental handpiece of self-removing scrap. BACKGROUND

[0002] Dental handpiece is the most commonly used equipment in clinical treatment of stomatology department, dental drill is closely contacted with the tooth of patient during treatment, and a large amount of bone scrap is generated by friction between dental drill and tooth bone tissue, so it needs to stop treatment intermittently to clean and collect bone scrap, many bone scrap accumulated in the thread groove of dental drill is difficult to clean, and it needs to be forcibly dug out using a spoon, and it is not easy to dig clean, so there is the problem of inconvenient cleaning, and the dug bone scrap is easy to scatter, which is inconvenient to collect. SUMMARY

[0003] In view of the defects in the prior art, the technical problem to be solved by the utility model is to provide a self-removing scrap dental handpiece which can quickly and conveniently clean the residual bone scrap in the thread groove and facilitate the collection of bone scrap and bone tissue.

[0004] In order to solve the above technical problems, the utility model provides a self-removing scrap dental handpiece, which comprises a machine body handle, a machine head installed at the left end of the machine body handle, a dental drill installed on the machine head, and a motor for driving the dental drill to rotate provided on the machine head.

[0005] A scrap removal ring movably matched with the drill handle of the dental drill is sleeved on the drill handle, the upper end of the scrap removal ring is fixed with a positioning protruding column protruding upward, a positioning hole for the positioning protruding column on the scrap removal ring is provided on the machine head, a concentric inner sleeve ring is sleeved in the scrap removal ring, the scrap removal ring and the inner sleeve ring are in sliding fit, a brake pin capable of sliding in the radial direction of the scrap removal ring is provided on the scrap removal ring, and the brake pin has a gap with the inner sleeve ring and can slide inward to a position where the inner end of the brake pin abuts against the inner sleeve ring.

[0006] A plurality of inward protruding elastic protrusions symmetrically arranged around the ring core of the inner sleeve ring are provided on the inner sleeve ring, the number of the elastic protrusions is consistent with the number of the thread grooves on the dental drill, and an inward protruding scrap protrusion is fixed to the inner end of each elastic protrusion.

[0007] The self-removing scrap dental handpiece provided by the utility model can quickly and conveniently clean the residual bone scrap in the thread groove by the cooperation of the scrap removal ring and the inner sleeve ring, and the scraped bone scrap is relatively complete, so it is convenient for bone scrap and bone tissue collection. BRIEF DESCRIPTION OF DRAWINGS

[0008] Fig. 1 is a structural schematic diagram of the self-removing scrap dental handpiece of the utility model embodiment;

[0009] Fig. 2This is a diagram showing the usage state of the self-cleaning dental handpiece according to an embodiment of the present invention;

[0010] Fig. 3 This is a schematic diagram of the structure of the cleaning ring according to an embodiment of the present invention. Detailed Implementation

[0011] The embodiments of this utility model are described in further detail below with reference to the accompanying drawings. However, these embodiments are not intended to limit this utility model. Any similar structures or variations thereof that adopt this utility model should be included in the protection scope of this utility model. The commas in this utility model all indicate the relationship between and.

[0012] like Figs. 1-3 As shown in the figure, the self-cleaning dental handpiece provided in this embodiment of the present invention includes a handle 1, a head 2 installed on the left end of the handle, a dental drill 3 installed on the head 2, and a motor for driving the dental drill 3 to rotate on the head 2.

[0013] The dental drill bit 3 has a chip removal ring 5 fitted on its shank, which is movably fitted with the chip removal ring 5. The upper end of the chip removal ring 5 is fixed with an upwardly protruding positioning protrusion 52. The drill head 2 has a positioning hole for the positioning protrusion 52 on the chip removal ring to be inserted. The chip removal ring 5 is fitted with a concentric inner ring 4. The chip removal ring 5 and the inner ring 4 are in sliding fit. The chip removal ring 5 is provided with a brake pin 51 that can slide along its radial direction. There is a gap between the brake pin 51 and the inner ring, and the brake pin 51 can slide inward to the position where its inner end abuts against the inner ring.

[0014] The inner ring 4 is provided with a plurality of inwardly protruding elastic protrusions 6 symmetrically arranged around its center. The number of elastic protrusions 6 is the same as the number of threaded grooves on the dental drill bit 3. Each elastic protrusion 6 has an inwardly protruding chip removal protrusion 7 fixed at its inner end (the end facing the center of the inner ring is the inner end).

[0015] In this embodiment of the invention, the number of chip removal protrusions 7 and the number of threaded grooves on the dental drill bit 3 are both two. In other embodiments, the number of chip removal protrusions and the number of threaded grooves on the dental drill bit can also be more than two.

[0016] This utility model embodiment is used for dental drilling in clinical practice, and its usage method is as follows:

[0017] In the initial state, the positioning protrusion 52 on the chip removal ring is inserted into the positioning hole on the head 2, thereby positioning the chip removal ring 5 so that it will not rotate with the dental drill 3; at this time, the dental handpiece can be operated to drill the patient's teeth. At this time, the chip removal protrusion 7 abuts against the smooth circumferential surface of the drill shank and will not interfere with the rotation of the dental drill. The elastic protrusion 6 is also in a compressed state.

[0018] After the drilling is completed, bone debris will inevitably be left in the thread groove of the dental drill 3. At this time, the debris removal ring 5 is moved downward, so that the positioning protrusion 52 is disengaged from the positioning hole. After the debris removal ring 5 is moved to the upper end of the thread groove of the dental drill 3, the brake pin 51 is pressed so that the inner end of the brake pin 51 abuts against the inner sleeve ring 4. Then, the debris removal ring 5 is rotated (at this time, the inner sleeve ring 4 is braked by the brake pin 51 and rotates together with the debris removal ring 5), until the two debris removal protrusions 7 are respectively clamped into the two thread grooves on the dental drill 3 under the action of the elastic force. Then, the brake pin 51 is released, so that the inner sleeve ring 4 can rotate freely. Then, the debris removal ring 5 is moved downward (during the moving process, the inner sleeve ring 4 slides relative to the debris removal ring 5). Thus, the bone debris in the thread groove can be removed by the debris removal protrusions 7, and the scraped bone debris is relatively complete, which is convenient for collecting the bone debris.

Claims

1. A self-debriding dental handpiece, comprising a machine handle, a handpiece installed at the left end of the machine handle, a dental drill installed on the handpiece, and a motor installed on the handpiece for driving the dental drill to rotate; characterized in that: a debriding ring is sleeved on the drill shank of the dental drill and movably matched with the drill shank, an upwardly protruding positioning column is fixed on the upper end of the debriding ring, a positioning hole is provided on the handpiece for the positioning column on the debriding ring to insert into, an inner sleeve ring is sleeved in the debriding ring and concentrically arranged, the debriding ring and the inner sleeve ring are in sliding fit, a brake pin is arranged on the debriding ring and can slide along the radial direction of the debriding ring, the brake pin has a gap with the inner sleeve ring, and the brake pin can slide inwardly to a position where the inner end of the brake pin abuts against the inner sleeve ring; a plurality of inwardly protruding elastic blocks are symmetrically arranged around the inner sleeve ring, the number of the elastic blocks is consistent with the number of the screw thread slots on the dental drill, and an inwardly protruding debriding bump is fixed on the inner end of each elastic block. ​ ​

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