KR102368653B1 - Medical Saw Handpiece Cover Device - Google Patents

Abstract

Disclosed is a device for covering a medical saw. According to the embodiment, in the medical saw handpiece equipped with the saw cover, the guide cover coupled to the fitting groove formed in the opening of the saw cover, coupled to the outer circumferential surface of the shank, and inserted into the guide cover, the outer circumferential surface of the shank an elastic member coupled to, and having one end elastically supported on the inner circumferential surface of the saw cover; and a bushing guide coupled to the guide cover, supported by the elastic member, coupled to the outer circumferential surface of the shank, and operated in the front-rear direction.
According to this, the coupling state between the shank and the saw cover is stable, the engine part of the cover and the handpiece can be maintained at an appropriate distance, and even if the size of the handpiece is changed, the connection part shakes due to the autonomous spacing adjustment of the bushing guide has the effect of preventing

Description

Medical Saw Handpiece Cover Device

The disclosed content relates to a cover device for a medical saw, and more particularly, to a cover device for a medical saw for preventing damage to the teeth or the inside of the oral cavity around the medical saw used for bone incision during dental procedures will be.

Unless otherwise indicated herein, the material described in this section is not prior art to the claims of this application, and inclusion in this section is not an admission that it is prior art.

It is encouraging that many people improve their physique, such as height and weight, due to the improvement of their diet, but as they prefer soft food or sweet food, the health of their teeth is worsening, so the need for dentures for many people is increasing. is increasingly being promoted.

In response to these demands, there have been many technological innovations in dentures, and the modern advanced technology has led to the development of dentures that are harmless to the human body and have low rejection reactions, which do not cause physiological disturbance even if they are attached to the human body for a long period of time.

Recently, as such dentures, dental implants have been commonly operated.

Sufficient bone mass and alveolar bone in the patient's oral cavity are essential for successful implant placement. This is because a certain space is required for the implant to be placed stably. However, the patient's oral condition is not always ideal, and many adverse conditions are encountered in implant placement. In particular, in the edentulous region that has lasted for a long period of time, bone resorption proceeds along with the loss of teeth, and the horizontal bone mass on the labial or buccal-lingual side of the remaining bone is less than that of the initial alveolar bone.

In this case, in order to place the implant more stably, a bone graft using autogenous bone, allograft bone, synthetic bone, etc. is performed on the bone defect, or block bone, which is a part of the oral cavity or body, is collected and added to the bone defect area or alveolar function is performed. segmentation should be performed.

Recently, a surgical method of expanding the alveolar bone after cutting the bone by rotating a circular saw at high speed with a dental engine on a narrow ridge is mainly used. The surgical method using a circular saw has the advantage of being able to quickly remove the bone and not applying an impact to the patient.

However, there is a problem that the circular saw rotating at high speed may jump out in the process of removing the bone and injure the inside of the oral cavity, such as adjacent teeth, tongue, and gums.

A surgical handpiece, such as a drill, a reamer, and a saw, is commonly used in surgical procedures.

These surgical handpieces are generally provided with a motor, a shank connected to the drive shaft of the motor, a saw blade mounted on the end of the shank, and a complementary control circuit for controlling the operation of the motor.

A saw cover that can prevent damage to the tissues surrounding the surgical site and protect the saw blade from scattering the cutting material is mounted on the handpiece.

The saw cover is mounted on the outside of the shank.

On the other hand, since the handpiece has different manufacturers and different outputs, the specifications of the power unit are not uniform.

Therefore, in the prior art, when the handpiece is changed, since the standard of the power unit is changed, the coupling state of the saw cover is unstable, and there is a fear that a defect may occur in the operation of the saw during high-speed rotation.

Korean Patent Application No. 10-2013-0035155

An object of the present disclosure is to provide a cover device for a medical saw so that the gap between the coupling part can be automatically adjusted according to the specifications of the handpiece so that the coupling state of the shank and the saw cover can be stably maintained.

1. The object of the embodiment is to be coupled to the shank rotated by being coupled to the handpiece, and the saw coupled to the end of the shank, the bushing being coupled to the outer circumferential surface of the shank; A bushing seating groove to which the bushing is coupled and a fitting groove to which the guide cover is coupled are formed, a body having a through hole through which the shank passes at the center of the bushing seating groove and the fitting groove, and a cover formed to surround the outer periphery of the saw an additionally formed saw cover; a guide cover coupled to the fitting groove of the saw cover to guide the front and rear operation of the bushing guide; an elastic body inserted into the guide cover and fitted to the outer surface of the shank; Coupled to the inner side of the guide cover, supported by the elastic body, coupled to the outer peripheral surface of the shank bushing guide to be drawn out or retracted; including; that can be achieved by the cover device of the medical saw.

2. The object of the embodiment, in the medical saw handpiece equipped with the saw cover, is coupled to the fitting groove formed in the opening of the saw cover, the guide cover is coupled to the outer circumferential surface of the shank, and is inserted into the guide cover, the shank an elastic member coupled to the outer circumferential surface of the saw cover and elastically supported at one end on the inner circumferential surface of the saw cover; Coupled to the guide cover and supported by the elastic member, the bushing guide coupled to the outer circumferential surface of the shank and operated in the front-rear direction; can be achieved by the cover device of the medical saw including.

The bushing is characterized in that a through hole having an inner diameter supported on the outer circumferential surface of the shank is formed, and a bushing seating groove into which the bushing is fitted is formed on the inner circumferential surface of the saw cover.

The bushing guide is characterized in that both ends are opened and a passage through which the shank is coupled is formed therein, and a protruding hwanteok is formed at one end of the outer periphery of the opening.

The guide cover has both ends open and an inner fitting portion having a through hole through which the shank passes is formed, and an outer fitting portion to be fitted into the opening of the body of the saw cover is formed on the outside, and the inner fitting portion is a bushing on the inner periphery It is characterized in that the locking jaw in close contact with the round jaw of the guide is formed around the through hole.

According to the disclosed embodiment, the coupling state of the shank and the saw cover is stable, the engine part of the cover and the handpiece can be maintained at an appropriate distance, and even if the size of the handpiece is changed, the connection part is made by autonomous spacing adjustment of the bushing guide. It has the effect of preventing the occurrence of vibration.

In addition, the bushings and bushing guides are made of special plastic materials that reduce friction with the saw shank, thereby reducing noise and improving rotational force.

1 is a front view showing an example of a combination of a cover device and a handpiece of a medical saw according to an embodiment;
Figure 2 is an exploded perspective view showing the cover device of the medical saw according to the embodiment;
Figure 3 is a combined cross-sectional view of the cover device of the medical saw according to the embodiment;
4 and 5 are real photographs each showing a coupling example of the medical saw and the handpiece according to the embodiment of the cover device.

Hereinafter, preferred embodiments will be described in detail with reference to the accompanying drawings.

The embodiments to be described below are intended to describe in detail enough to be easily implemented by a person of ordinary skill in the art to which the present invention pertains, thereby limiting the technical spirit and scope of the present invention. doesn't mean

In addition, the size or shape of the components shown in the drawings may be exaggerated for clarity and convenience of explanation, and terms specifically defined in consideration of the configuration and operation of the present invention may vary depending on the intention or custom of the user or operator. It should be noted that definitions of these terms should be made based on the content throughout this specification.

Among the accompanying drawings, Figure 1 is a front view showing a coupling example of the handpiece and the cover device of the medical saw according to the embodiment, Figure 2 is an exploded perspective view showing the cover device of the medical saw according to the embodiment, Figure 3 is the embodiment The combined cross-sectional view of the cover device of the medical saw according to, Figures 4 and 5 are real photographs each showing a coupling example of the medical saw cover device and the handpiece according to the embodiment.

1, the cover device of the medical saw according to the embodiment is coupled to the engine unit 510 provided in the handpiece 500 and the rotating shank 520, and at the end of the shank 520 It is mounted to surround the outer periphery of the saw 540 is coupled.

2 and 3, the cover device of the medical saw according to the embodiment, the bushing 100 coupled to the outer peripheral surface of the shank (520); A bushing seating groove 212 coupled to the outside of the bushing 100 and a fitting groove 216 to which the guide cover 300 is coupled are formed, and at the center of the bushing seating groove 212 and the fitting groove 216, a shank ( The body 210 through which the 520 passes through the through hole 214 is formed, and the cover portion 240 is formed to surround the outer periphery of the saw 540, the saw cover 200 is formed; a guide cover 300 coupled to the fitting groove 216 of the saw cover 200 to guide the front and rear operation of the bushing guide 450; an elastic body 400 inserted into the guide cover 300 and coupled to the outer surface of the shank 520; A bushing guide 450 coupled to the inner side of the guide cover 300 , supported by the elastic body 400 , coupled to the outer peripheral surface of the shank 520 to be drawn out or retracted.

The bushing 100 is formed with a through hole 102 having an inner diameter into which the outer peripheral surface of the shank 520 can be inserted.

A bushing seating groove 212 is formed on the inner peripheral surface of the saw cover 200 so that the bushing 100 is fitted.

Shank 520 is a rod-shaped shaft, a portion of the outer peripheral surface, a portion close to the saw 540, the locking jaw 522 is formed to protrude, and the bushing 100 is coupled so as to be in close contact with the locking jaw 522. do.

The bushing 100 is inserted into the bushing seating groove 212 formed on the inner circumferential surface of the saw cover 200 to prevent shaking when the shank 520 rotates, and to accommodate heat generated by rotational friction with the shank 520 . should be able to

The bushing seating groove 212 formed on the inside of the saw cover 200 protrudes inward so that one end of the bushing 100 can be seated and supported, and a through hole 214 through which the shank 520 passes is formed therein. do.

Accordingly, the support portion 215 having the through hole 214 is formed inside the bushing seating groove 212 .

Preferably, the saw cover 200 includes a body 210 coupled to the shank 520 and a cover unit 240 coupled to the outside of the saw 540 , the body 210 and the cover unit 240 . ) has a neck portion 220 to connect.

A fitting groove 216 is formed in the body 210 to be coupled to the outside of the bushing 100 , and a through hole 214 through which the shank 520 passes is formed in the center of the fitting groove 216 .

The cover part 240 is formed in an arc shape to surround the outer periphery of the saw 540, and is bent at right angles to the outer periphery of the rear plate 242 connected to the neck part 220 and the rear plate 242 to form a sector. and a window 244 made of

The rear plate 242 is formed in a sector shape, and the inside thereof is perforated to form an open hole 243 .

The open hole 243 is formed to allow the cutting material to flow out so as not to remain inside the cover part 240 .

It allows the cutting material to be discharged through the plurality of observation through-holes 245 and, in addition, by visually confirming the coupling state or rotational operation of the saw 540, it is possible to determine whether there is an abnormality.

On the other hand, in the embodiment according to the present invention, by forming the open hole 243 and the observation through hole 245 in the saw cover 200, it becomes easy to dissipate the heat generated during the cutting operation of the saw 540 to the outside. rise can be blocked.

Table 1 below shows the results of testing the heat between the cover device of the medical saw according to the present invention and other companies' products.

third-party products embodiment of the present invention 1 min 2 minutes 1 min 2 minutes Maximum temperature (℃) 44.5 48.9 26.9 29.9

The heat measurement site is the bushing 100 .

The bushing 100 is an engineering plastic material, and since it is a portion in contact with the shank rotating at high speed while receiving the most pressure during saw cutting, heat generation is high and thus it is the most vulnerable part.

Referring to Table 1, in the embodiment of the present invention, when the heat generation temperature of the bushing was measured when it was rotated at high speed for 1 to 2 minutes, it was confirmed that heat generation could be significantly lower than that of other companies' products, and due to this performance improvement, It was confirmed that the life of parts can be extended and the stability of the product can be maintained.

Meanwhile, the guide cover 300 is coupled to the rear end fitting groove 216 of the body 210 of the saw cover 200 .

The elastic body 400 and the bushing guide 450 are coupled to the inside of the guide cover 300 .

The bushing guide 450 is exposed to the outside of the guide cover 300 , and is always maintained in a state exposed to the outside by the elasticity of the elastic body 400 .

In this way, the exposed end of the bushing guide 450 is supported on the front surface of the engine unit 510 of the handpiece 500 so that an appropriate distance between the saw cover 200 and the engine unit 510 of the handpiece 500 is maintained. be able to

The guide cover 300 has both ends open and an inner fitting part 320 having a through hole 214 through which the shank 520 passes is formed therein, and the inside of the opening of the body 210 of the saw cover 200 is formed on the outside. An outer fitting portion 310 that is fitted with a .

The inner fitting portion 320 is formed with a locking jaw 322 in close contact with the round jaw 452 of the bushing guide 450 on the inner periphery, and the bushing guide 450 is fitted in the locking jaw 322 through hole 350. this is formed

The elastic body 400 is preferably a coil spring, which is fitted to the outer surface of the shank 520 , and is accommodated in the guide cover 300 .

One end of the elastic body 400 is supported in contact with the support portion 215 of the saw cover 200 , and the other end is supported in contact with the bushing guide 450 , so that the force pushing the bushing guide 450 always acts.

The bushing guide 450 has both ends opened and a through hole 451 to which the shank 520 is coupled is formed therein, and a protruding round tuck 452 is formed at one end of the outer periphery of the opening.

Hwanteok 452 is always in contact with the inner locking projection 522 of the guide cover 300, so that even if the bushing guide 450 is drawn out to the maximum, it is not separated from the guide cover 300.

Hereinafter, the operation of the cover device of the medical saw according to this embodiment will be described.

The bushing 100 is fitted into the bushing seating groove 212 in the body 210 of the saw cover 200 .

The saw 540 penetrates the shank 520 mounted at one end through the bushing 100 and is coupled to the inside of the body 210 .

Thereafter, the elastic body 400 and the bushing guide 450 are coupled to the outer circumferential surface of the shank 520 , and the guide cover 300 is coupled to the outside thereof to seal the other opening of the body 210 .

On the other hand, Figure 4 is a real photograph showing an example of mounting the cover device of the medical saw of the present invention to the handpiece 500 (product name: EX0103).

It was confirmed that the end of the bushing guide 450 was in close contact with the handpiece engine unit 510, and the distance between the guide cover and the front surface of the handpiece engine unit 510 was maintained at 0.7 mm.

5 is a real photograph showing an example of mounting the cover device of the medical saw of the present invention to the handpiece 500 (product name: STRONGACL (B)-41I ).

It was confirmed that the end of the bushing guide 450 was in close contact with the handpiece engine unit 510, and the distance between the guide cover and the front surface of the handpiece engine unit 510 was maintained at 1.4mm.

Therefore, in the medical saw cover device of the present invention, the end of the bushing guide 450 can be stably maintained in close contact with the handpiece engine unit 510 even if the type of the handpiece is changed, and an appropriate separation distance can be maintained. Therefore, it was confirmed that the rotational performance was stable and that it could be used universally.

Although described with reference to the preferred embodiment, it will be readily recognized by those skilled in the art that various modifications and variations can be made without departing from the spirit and scope of the invention, and all such changes and modifications fall within the scope of the appended claims. is self-evident

100: bushing 200: saw cover
212: bushing seating groove 240: cover part
242: rear panel 244: window
245: observation through hole 243: open hole
300: guide cover 320: inner fitting part
310: outer fitting 400: elastic body
450: bushing guide 452: step
454: through hole 500: handpiece
510: engine unit 520: shank
540: saw

Claims (4)

It is coupled to a shank that is coupled to the handpiece and rotates, and a saw coupled to an end of the shank,
a bushing coupled to an outer circumferential surface of the shank;
A bushing seating groove to which the bushing is coupled, and a fitting groove to which the guide cover is coupled are formed, and a body having a through hole through which the shank passes is formed in the center of the bushing seating groove and the fitting groove, and is formed to surround the outer periphery of the saw a saw cover with a cover portion formed thereon;
a guide cover coupled to the fitting groove of the saw cover to guide the front and rear operation of the bushing guide;
an elastic body inserted into the guide cover and fitted to the outer surface of the shank;
a bushing guide coupled to the inner side of the guide cover, supported by the elastic body, coupled to the outer circumferential surface of the shank, and operated to withdraw or retract;
Cover device of the medical saw, characterized in that it comprises a. The method of claim 1,
The bushing is formed with a through hole having an inner diameter supported on the outer circumferential surface of the shank,
A cover device for a medical saw, characterized in that a bushing seating groove to which a bushing is coupled is formed on the inner circumferential surface of the saw cover. The method of claim 1,
The bushing guide is
a passage in which both ends are opened and the shank is coupled therein;
Hwanteok formed on the outer periphery of one end of the opening;
Cover device of the medical saw, characterized in that it comprises a. The method of claim 1,
The guide cover
An inner fitting portion having both ends open and a through hole through which the shank is penetrated;
Including; and an outer fitting portion which is formed on the outside and is fitted into the opening of the body of the saw cover.
The inner fitting portion is a medical saw cover device, characterized in that formed around the through hole with a hooking jaw in close contact with the round jaw of the bushing guide on the inner periphery.

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