CN114073593A - Machine head limiting sleeve, tooth implantation limiting tool set and tooth implantation guiding limiting tool set - Google Patents

Abstract

The invention relates to a machine head limiting sleeve, a tooth implantation limiting tool set and a tooth implantation guiding limiting tool set, wherein the machine head limiting sleeve is used for limiting the drilling depth of a handheld machine tool and comprises a machine head section plate, a machine head adapting part and a tool limiting part, the machine head section plate is provided with a first side and a second side, a tool penetrating hole penetrates through the first side and the second side is formed in the center of the machine head section plate, the machine head adapting part is arranged on the first side, the machine head adapting part is provided with a machine head adapting structure corresponding to the machine head of the handheld machine tool, so that the machine head is detachably and fixedly arranged in the machine head adapting structure, the tool limiting part is arranged on the second side and is provided with an annular structure, and the annular structure is provided with a tool penetrating hole so that a tool penetrates through the tool penetrating hole, the annular structure and the tool penetrating hole; therefore, the invention is beneficial to limiting the maximum cutting depth of the drill hole during tooth implantation, has simple structure and does not occupy limited operation space.

Description

Machine head limiting sleeve, tooth implantation limiting tool set and tooth implantation guiding limiting tool set

Technical Field

The invention relates to a guide sleeve, in particular to a nose limit sleeve which is adapted to a dental handpiece and can limit the drilling depth, a tooth implantation limit tool set and a tooth implantation guide limit tool set.

Background

With the development of dental technology, more and more patients choose to solve the problem of missing teeth by means of tooth implantation. Dental implants are implants of metal implants (artificial tooth roots) into the alveolar bone of the oral cavity to replace the original tooth roots. After the implant is tightly combined with the bone for a period of time, the artificial crown or bridge is installed to restore the beauty and chewing function.

Dental implants are invasive techniques for dental restoration, in which a hole of a suitable size is cut in an alveolar bone using a handpiece (hand tool) before a metal implant is implanted in the alveolar bone. The mobile phone is provided with a cutter with a proper size, and a doctor drives the cutter to drill a hole on the alveolar bone in a way of holding the mobile phone by hand. However, in most cases, there are other teeth on both sides of the drilling position, and the patient has a limited opening width, which limits the cutting space. On the other hand, the practitioner must carefully calibrate his/her vision during drilling to avoid undesirable holes that are too deep and have a tendency to collapse. However, in most cases, the cutting simultaneously generates many chips and blood splash to affect the sight. Unfortunately, prolonged procedure time due to careful handling can seriously affect patient safety and comfort.

At present, advanced people design an additional cutter relay sleeve between the cutter and the mobile phone. The outer and inner sides of the cutter relay sleeve are rotatably combined. The upper part of the cutter relay sleeve is combined with the mobile phone, the lower part of the inner side of the cutter relay sleeve is combined with the cutter, and another handle bites the outer side of the cutter relay sleeve. When the operator starts the cutter and holds the handle, the outer side of the cutter does not rotate, and the cutting depth of the cutter can be limited under the non-rotating outer side. However, the prior art has several disadvantages in that the components thereof increase the volume or height considerably, and are not easy to handle in the limited oral space, especially for drilling the posterior molar region. Then, the joint between the rotating member and the positioning member in the prior art will generate a certain degree of operation wear. Furthermore, the structure of the prior art is complicated and precise, resulting in high manufacturing cost of the product.

Therefore, there is a need in the art for a dental implant drilling solution that solves the above problems.

Disclosure of Invention

In view of the above, an object of the present invention is to provide a nose limiting sleeve, a tooth implantation limiting tool set and a tooth implantation guiding limiting tool set, which are simple in structure and convenient to operate, and can overcome the defects of the prior art, thereby being beneficial to limiting the maximum cutting depth of a drill hole during tooth implantation and not occupying limited operation space.

To achieve the above object, the present invention discloses a handpiece limiting sleeve for limiting the drilling depth of a hand-held implement, the hand-held implement comprising a handpiece for driving a cutter, characterized in that the handpiece limiting sleeve comprises:

the machine head section plate is provided with a first side and a second side, a cutter penetrating hole penetrates through the first side and the second side in the center of the machine head section plate, and a notch is formed in the side surface of the machine head section plate and communicated with the cutter penetrating hole;

a head adapting part arranged on the first side and provided with a head adapting structure corresponding to the head, so that the head is detachably and fixedly arranged in the head adapting structure; and

a cutter limiting part arranged on the second side and provided with an annular structure, a cutter accommodating space is arranged in the annular structure, one end of the cutter accommodating space is provided with a cutter penetrating port, the other end of the cutter accommodating space is communicated with the cutter penetrating hole, and a lateral opening is arranged on the side surface of the annular structure and communicated with the cutter accommodating space and the notch.

Wherein, the nose segment plate presents a C shape or a U shape.

Wherein, the shortest radial length of the cutter accommodating space is greater than or equal to the shortest radial length of the cutter penetrating hole.

Wherein, the shortest path length of the cutter penetrating port is greater than or equal to the shortest path length of the cutter penetrating hole and the shortest path length of the cutter accommodating space.

Wherein the ring structure is formed by annularly arranging a plurality of substructures.

Wherein, the nose joint plate, the nose adapting part and the cutter limiting part are of an integrally formed metal structure and are manufactured by three-dimensional printing.

Wherein, further include a reinforcement rib, it sets up in the outer fringe of this aircraft nose adaptation portion and this spacing portion of cutter.

Wherein, this first side of this aircraft nose joint board supplies this aircraft nose to support to lean on.

Also disclosed is a spacing instrument group of implant, its characterized in that includes:

a hand-held implement including a handpiece for driving a tool, the handpiece having a tool mounting side; and

a plurality of aircraft nose limit sleeve can overlap respectively outside this aircraft nose is located, and each this aircraft nose limit sleeve further includes:

the machine head section plate is provided with a first side and a second side, a cutter penetrating hole penetrates through the first side and the second side in the center of the machine head section plate, and a notch is formed in the side surface of the machine head section plate and communicated with the cutter penetrating hole;

a machine head adapting part which is arranged on the first side and is provided with a machine head adapting structure corresponding to the machine head, so that the machine head is detachably and fixedly arranged in the machine head adapting structure, and the cutter mounting side is abutted against the first side; and

a tool limiting part arranged at the second side and provided with an annular structure, wherein a tool containing space is arranged in the annular structure, one end of the tool containing space is provided with a tool penetrating port, the other end of the tool containing space is communicated with the tool penetrating hole, and a lateral opening is arranged on the side surface of the annular structure and communicated with the tool containing space and the gap.

Also disclosed is a dental implant guiding and limiting tool set, comprising:

a hand-held implement including a handpiece for driving a tool, the handpiece having a tool mounting side;

a plurality of aircraft nose limit sleeve can overlap respectively outside this aircraft nose is located, and each this aircraft nose limit sleeve further includes:

the machine head section plate is provided with a first side and a second side, a cutter penetrating hole penetrates through the first side and the second side in the center of the machine head section plate, and a notch is formed in the side surface of the machine head section plate and communicated with the cutter penetrating hole;

a machine head adapting part which is arranged on the first side and is provided with a machine head adapting structure corresponding to the machine head, so that the machine head is detachably and fixedly arranged in the machine head adapting structure and the cutter mounting side is abutted against the first side; and

a tool limiting part arranged at the second side and provided with an annular structure, wherein a tool accommodating space is arranged in the annular structure, one end of the tool accommodating space is provided with a tool penetrating port, the other end of the tool accommodating space is communicated with the tool penetrating hole, and a lateral opening is arranged on the lateral surface of the annular structure and communicated with the tool accommodating space and the gap; and

the tooth implantation guide sleeve is provided with an axial guide lead hole corresponding to the machine head limiting sleeve so as to allow the machine head limiting sleeve to axially move, and the bottom of the tooth implantation guide sleeve is provided with a guide sleeve cutter through hole.

Therefore, the nose limiting sleeve is simple in structure and low in manufacturing cost; the volume is small, and no additional operation space is needed; when the tool is operated, the head limiting sleeve is not in direct contact with the tool, and the problem of operation abrasion is solved. The handpiece limiting sleeve is also beneficial to intuitively stopping at a proper depth during drilling, and can conveniently replace handpiece limiting sleeves of different specifications, thereby shortening the operation time.

Drawings

FIG. 1A is a front view of a handpiece stop sleeve according to one embodiment of the present invention;

FIG. 1B is a side view of a handpiece stop sleeve according to the embodiment of FIG. 1A;

FIG. 1C is a top view of a handpiece stop collar according to the embodiment of FIG. 1A;

FIG. 1D is a bottom view of a handpiece stop sleeve according to the embodiment of FIG. 1A;

FIG. 2 is a schematic view of a combination handpiece and handpiece stop sleeve of the embodiment of FIG. 1A;

FIG. 3A is a perspective view of a handpiece stop sleeve according to one embodiment of the present invention;

FIG. 3B is a perspective view of a handpiece stop sleeve according to various embodiments of the present invention;

FIG. 3C is a schematic view of the use of the handpiece stop sleeve 1R of FIG. 3B in conjunction with a handpiece drill;

FIG. 3D is a schematic view of the use of the handpiece stop sleeve 1P of FIG. 3B in conjunction with a handpiece drill;

FIG. 4A is a front view of a handpiece stop sleeve according to another embodiment of the present invention;

FIG. 4B is a side view of a handpiece stop sleeve according to the embodiment of FIG. 4A;

FIG. 4C is a top view of the handpiece stop sleeve according to the embodiment of FIG. 4A;

FIG. 4D is a bottom view of the handpiece stop sleeve according to the embodiment of FIG. 4A;

FIG. 5 is a schematic view of a combination handpiece and handpiece stop sleeve of the embodiment of FIG. 4A;

FIG. 6A is a front view of a handpiece stop sleeve according to yet another embodiment of the present invention;

FIG. 6B is a side view of a handpiece stop sleeve according to the embodiment of FIG. 6A;

FIG. 6C is a top view of the handpiece stop sleeve according to the embodiment of FIG. 6A;

FIG. 6D is a bottom view of the handpiece stop sleeve according to the embodiment of FIG. 6A;

FIG. 7A is a front view of a handpiece stop sleeve according to yet another embodiment of the present invention;

FIG. 7B is a side view of a handpiece stop sleeve according to the embodiment of FIG. 7A;

FIG. 7C is a top view of the handpiece stop sleeve according to the embodiment of FIG. 7A;

FIG. 7D is a bottom view of the handpiece stop sleeve according to the embodiment of FIG. 7A;

FIG. 8 is a schematic view of a tooth implantation stop tool set according to an embodiment of the present invention;

fig. 9 is a schematic view of a tooth implantation guiding and limiting tool set according to an embodiment of the present invention.

Detailed Description

In order that the advantages, spirit and features of the invention will be readily understood and appreciated, embodiments thereof will be described and illustrated with reference to the accompanying drawings. It should be noted that these examples are only representative examples of the present invention. It may be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

The terminology used in the various embodiments of the disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the various embodiments of the disclosure. As used herein, the singular forms also include the plural forms unless the context clearly dictates otherwise. Unless otherwise defined, all terms (including technical and scientific terms) used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which the various embodiments of the disclosure belong. The above terms (such as those defined in commonly used dictionaries) should be interpreted as having a meaning that is consistent with their meaning in the context of the same technical field and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

Please refer to fig. 1A to 1D and fig. 2. Fig. 1A to 1D are front, side, top and bottom views of a handpiece stop sleeve 1 according to an embodiment of the present invention. Fig. 2 is a schematic view of a handpiece stop sleeve 1 combining the handpiece and the embodiment of fig. 1A. As shown in fig. 1A to 1D and fig. 2, in the present embodiment, the handpiece limiting sleeve 1 is used for limiting the drilling depth of the handheld device 2, and the handheld device 2 includes a handpiece 20 for driving a cutter 3. The nose limiting sleeve 1 comprises a nose section plate 10, a nose adapting portion 12 and a cutter limiting portion 14. The head segment plate 10 has a first side 101 and a second side 102. The core of the handpiece section plate 10 has a tool access hole 100 through the first side 101 and the second side 102. The head adapter 12 is disposed on the first side 101. The head adapter 12 has a head adapter structure 120 corresponding to the head 20, so that the head 20 is detachably fixed in the head adapter structure 120. The tool-limiting portion 14 is disposed on the second side 102 and has an annular structure 140. The ring structure 140 has a through hole, and a tool penetrating opening 1400 is formed at one end of the through hole, so that the tool 3 penetrates through the tool penetrating hole 100, the ring structure 140 and the tool penetrating opening 1400. That is, when the mobile phone 2 is installed with the cutter 3 and is operated, the cutter 3 is not in direct contact with the ring structure 140.

The machine head limiting sleeve 1 is fixedly arranged on the machine head 20, and when the handheld machine tool 2 provided with the machine head limiting sleeve 1 works on a working plane, the cutter limiting part 14 abuts against the working plane to limit the machine head 20 to move towards the working plane. Correspondingly, the tool 3 driven by the head 20 can no longer drill deeper. Therefore, the tool stopper portion 14 limits the drilling depth. Meanwhile, the operator can replace the handpiece limiting sleeve 1 of the annular structure 140 with different lengths to determine the length of the cutter 3 exposed out of the cutter through hole 1400, thereby determining the drilling depth. An operator only needs to select the drilling depth, replaces the machine head limiting sleeve 1 with the relative length, and can drill deeply intuitively after determining the drilling position angle. When the preset drilling depth is reached, the operator may feel that the hand-held implement 2 is blocked and stopped without continuously and repeatedly visually estimating the drilling depth.

The handpiece 2 may be a handpiece (handphone) commonly used in dental surgery. The cutter 3 is a dental cutter or a dental drill which can be provided with a hand piece. The purpose of the nose segment plate 10 is to block the axial movement of the nose 20 in the nose limiting sleeve 1. Between the nose adapter 12 and the tool stop 14, the structure having the same function can be regarded as one of the nose segment plates 10, and is not limited to the plate type.

The handpiece limiting sleeve 1 of the embodiment has the advantages of simple structure and low manufacturing cost. And, the structure of the machine head limiting sleeve 1 is almost attached to the original handheld machine 2, and the operation space is not occupied. Because the nose limiting sleeve 1 of the present invention is fixed on the nose 20, rather than between the nose and the tool in the prior art, the length of the tool is not extended, and the tool is not limited by the opening range or the drilling position. Furthermore, the head limiting sleeve 1 does not directly contact the cutter 3, and the head limiting sleeve 1 does not need to be provided with a rotating element and cannot be worn in the operation process. In addition, the nose limiting sleeve 1 does not need to be detached, and the nose 20 can directly replace the cutter 3. Finally, the handpiece limiting sleeve 1 is clamped and fixed on the handpiece 20 by using a structure, can be disassembled and assembled by simple force application, and is convenient and quick to replace.

In the specific embodiment of the structure of the nose limiting sleeve 1 shown in fig. 1A, the nose limiting sleeve 1 can be mounted on the nose 20 along the axial direction Y of the cutter 3 perpendicular to the cutter axis as shown in fig. 2, and is clamped by the nose adapter structure 120 of the nose adapter 12. The first side 101 of the handpiece knuckle plate 10 is abutted by the handpiece 20 to limit the relative positions of the handpiece 20 and the handpiece stop sleeve 1.

The ring structure 140 is a similar tubular structure with a space inside and two open ends. The annular structure 140 has an opening at one end thereof as a tool insertion hole 1400 and an opening at the other end thereof communicating with the tool insertion hole 100. However, in different embodiments, the ring structure 140 may also be a tubular structure with an opening on the side, or a plurality of sub-structures arranged in a ring, which may also be referred to as the ring structure 140, to achieve the purpose of the present invention.

In various embodiments, the nose plate 10, the nose adapter 12, and the tool stop 14 are integrally formed metal structures, which is beneficial to the stability of the overall structure. The integrally formed nose limiting sleeve 1 can be manufactured by additive manufacturing in a 3D metal printing mode. Compared with material reduction manufacturing, the material increase manufacturing is more suitable for the nose limit sleeve with a special and small structure in the invention.

Please refer to fig. 2, fig. 3A and fig. 3B. Fig. 3A and 3B are perspective views of a handpiece stop sleeve according to embodiments of the present invention. The annular structure 140 has a tool receiving space 1405 therein, and the shortest diameter length d2 of the tool receiving space 1405 is greater than or equal to the shortest diameter length d1 of the tool insertion hole 100. The shortest radial length d3 of the cutter penetration hole 1400 is greater than or equal to the shortest radial length d1 of the cutter penetration hole 100 and the shortest radial length d2 of the cutter accommodation space 1405. Since the shank 30 of the tool 3 is generally smaller in diameter, the shortest diameter d1 of the tool insertion hole 100 can be narrower, allowing the first side 101 of the head segment plate 10 to have a larger area for clamping the head 20. Since the cutting edge 31 of the tool 3 generally has a larger diameter and the annular structure 140 of the tool retaining portion 14 is prevented from contacting the cutting edge 31 and being worn, the shortest radial length d2 of the tool accommodating space 1405 needs to be wider. While avoiding the accumulation of the debris in the tool accommodating space 1405 during drilling, the shortest radial length d3 of the tool insertion opening 1400 is also wider than the shortest radial length d2 of the tool accommodating space 1405.

In addition, the top or side of the nose adapter 120 may have a protruding latch 127 to latch the nose 20 and prevent the nose stop sleeve 1 from slipping.

Please refer to fig. 3A to fig. 3D. Fig. 3C and 3D are schematic views of drilling using the head restraint sleeve 1R and the head restraint sleeve 1P of fig. 3B. When an operator wants to drill a shallow hole in the alveolar bone 4 by using the cutter 3, the handpiece limit sleeve 1R of the longer cutter limit part 14R (or the cutter limit part 14S of the handpiece limit sleeve 1S) can be selected to be provided with the handheld implement 2. In this case, the portion of the tool 3 exposed from the tool stopper portion 14R is small, and the hole is drilled shallowly. When the operator wants to drill a deeper hole in the alveolar bone 4 by using the same tool 3, the handpiece limit sleeve 1P of the shorter tool limit portion 14P (or the tool limit portion 14Q of the handpiece limit sleeve 1Q) 14Q is selected to replace the mounting of the hand-held tool 2. At this time, the cutter 3 is exposed to the cutter stopper portion 14P more and the hole is drilled deeper.

Please refer to fig. 4A to 4D and fig. 5. Fig. 4A to 4D are a front view, a side view, a top view, and a bottom view of a handpiece stop sleeve 1 according to another embodiment of the present invention. Fig. 5 is a schematic view of a handpiece stop sleeve 1 combining the embodiments of the handpiece 2 and fig. 4A. In practice, the diameter of a part of the tool is too long to enter the tool insertion hole 100 of the previous embodiment in a direction perpendicular to the tool axial direction Y. In this embodiment, the side of the nose segment plate 10 has a notch 105 communicating with the tool access hole 100. The annular structure 140 has a tool receiving space 1405 therein. The cutter accommodating space 1405 has a cutter passing opening 1400 at one end thereof. The other end of the tool accommodating space 1408 communicates with the tool insertion hole 100. The side of the ring structure 140 has a lateral opening 145 communicating with the cutter receiving space 1405 and the notch 105. The annular structure 140 of the nose stop sleeve 1 and the side of the nose segment plate 10 have a lateral opening 145. The lateral opening 145 communicates the cutter penetration hole 100 and the cutter penetration hole 1400. That is, the tool access hole 100 is open to the outer rim, both from a top view and from a bottom view. The nose joint plate 10 is C-shaped or U-shaped, and it does not limit the structural curvature and shape of the outer edge or inner edge of the nose joint plate 10, but indicates that the nose joint plate has a hole which is obviously concave inwards.

Under the condition of allowable structural strength, the design can provide that the machine head limiting sleeve 1 is arranged on the machine head 20 from the side surface of the cutter 3, namely the parallel cutter axial direction X in the figure 5; it can also be mounted on the head 20 in a perpendicular tool axial direction Y of the tool 3 in the manner described previously with reference to fig. 2. Therefore, the independence of the machine head limiting sleeve 1 and the cutter 3 is higher, and the cutter 3 does not need to be disassembled firstly when the machine head limiting sleeve 1 is replaced; on the contrary, the replacement of the cutter 3 does not need to disassemble the machine head limiting sleeve 1 firstly.

In addition, the water spraying port on the mobile phone sprays water towards the cutter, so that the operation temperature is reduced and bloody water is washed away. The design of the side openings 145 allows water to be sprayed up to the drill holes for cooling and for smooth drainage of blood.

In this embodiment, the nose limiting sleeve 1 further includes a reinforcing rib 16 disposed on the outer edges of the nose adapting portion 12 and the tool limiting portion 14 to enhance the overall structural strength. The reinforcing rib 16 is the same as other elements of the present invention, and is not limited to the embodiment, and can be combined with other embodiments. One of ordinary skill in the art may also use a plurality of reinforcement ribs 16 to reinforce the structural strength.

Please refer to fig. 6A to 6D. Fig. 6A-6D are front, side, top and bottom views of a handpiece stop sleeve according to yet another embodiment of the present invention. In this embodiment, in addition to the ring structure 140 of the nose stop sleeve 1 and a lateral opening 145 in the side of the nose segment plate 10, the ring structure 140 is comprised of three substructures 1401. When the ring structure 140 has a plurality of lateral openings, a plurality of sub-structures 1401 are formed. The plurality of lateral structures also facilitate the flushing of water into and out of the tool retention portion 14.

Please refer to fig. 7A to 7D. Fig. 7A-7D are front, side, top, and bottom views of a handpiece stop sleeve according to yet another embodiment of the present invention. In some cases, the tool may be operated in a smaller space, such as too close a tooth to the side of the hole. Instead, the ring structure 140 may be drilled with a smaller diameter. Even further, the ring structure 140 may be designed to be non-circular, such as oval, polygonal, concave, etc., to conform to the interdental space.

Please refer to fig. 8. Fig. 8 is a schematic view of a tooth implantation position limiting tool set according to an embodiment of the invention. In another aspect of the present invention, a dental implant fixture is provided. The tooth implantation limiting tool set comprises a handheld machine tool 2 and a plurality of machine head limiting sleeves 1. The hand-held implement 2 comprises a head 20 for driving a tool, the head 20 having a tool mounting side 201. Each head restraint sleeve 1 is substantially identical to the head restraint sleeves described in the previous embodiments. It is emphasized here in particular that the head 2 is detachably fastened in the head adapter 120 with the tool-receiving side 201 abutting against this first side 101. In addition, the length of the cutter spacing portion 14 of each head spacing sleeve 1 is different, such as 15mm, 17mm, 19mm, 21 mm. The tool-limiting portions 14 of different lengths are used for drilling holes of different depths, for example, the tool-limiting portions 14 can drill cutting depths of 9mm, 7mm, 5mm and 3mm respectively corresponding to the lengths.

Please refer to fig. 9. Fig. 9 is a schematic view of a tooth implantation guiding and limiting tool set according to an embodiment of the present invention. In this embodiment, the tooth implantation guiding and limiting tool set comprises a handheld machine 2, a plurality of handpiece limiting sleeves 1 and a tooth implantation guiding sleeve set 3. The efficacy of the hand-held implement 2 and the handpiece limit sleeve 1 is substantially the same as that of the previous embodiment, and the detailed description thereof is omitted. The hand-held implement 2 and the single handpiece limiting sleeve 1 are pre-combined and the dental implant guiding set 3 is pre-fixed on the surgical site, and the hand-held implement 2 and the single handpiece limiting sleeve 1 can axially slide in the dental implant guiding set 3. The implant guide set 3 further comprises an implant guide set 31 and a dental model fixing member 32. The tooth implantation guiding sleeve 31 has an axial guiding hole 310 corresponding to the handpiece limiting sleeve 1 for the handpiece limiting sleeve 1 to axially move in the axial guiding hole 310, and a guiding sleeve cutter through hole 312 is arranged at the bottom. The dental model fixing member 32 has a guide sleeve hole 320 for receiving the implant guide sleeve 31.

The outer diameter of the nose limiting sleeve 1 is almost the same as the inner diameter of the axial guide hole 310, so that the nose limiting sleeve 1 can slide up and down in the axial guide hole 310, so that the cutter can penetrate out of the cutter through hole 312 of the guide sleeve to cut the alveolar bone. The tooth implantation guide sleeve 31 of the invention is used for limiting the radial movement of the nose limiting sleeve 1, and the hand-held tool 2 can stably move axially to avoid left and right deviation. The tooth mold fixing element 32 further has a transverse groove in the guiding sleeve hole 320, and the tooth implantation guiding sleeve 31 is fixed in the guiding sleeve hole 320 of the tooth mold fixing element 32 by a transverse tenon. Since the dental model fixing element 32 is a personal consumable material, the precise dental implant guiding sleeve 31 can be reused and does not need to be discarded.

In conclusion, the handpiece limiting sleeve is mainly beneficial to an operator to master the cutting depth during drilling. The nose limiting sleeve is simple in structure and low in manufacturing cost; the volume is small, and no additional operation space is needed; when the tool is operated, the head limiting sleeve is not in direct contact with the tool, and the problem of operation abrasion is solved. And the machine head limiting sleeves with different specifications can be conveniently replaced, and the operation time is shortened.

The above detailed description of the embodiments is intended to more clearly describe the features and spirit of the present invention, and is not intended to limit the scope of the present invention by the embodiments disclosed above. On the contrary, it is intended to cover various modifications and equivalent arrangements included within the scope of the claims.

Claims (10)

1. A handpiece limiting sleeve for limiting the drilling depth of a hand held implement, the hand held implement including a handpiece for driving a cutter, the handpiece limiting sleeve comprising:

the machine head section plate is provided with a first side and a second side, a cutter penetrating hole penetrates through the first side and the second side in the center of the machine head section plate, and a notch is formed in the side surface of the machine head section plate and communicated with the cutter penetrating hole;

a head adapting part arranged on the first side and provided with a head adapting structure corresponding to the head, so that the head is detachably and fixedly arranged in the head adapting structure; and

a cutter limiting part arranged on the second side and provided with an annular structure, a cutter accommodating space is arranged in the annular structure, one end of the cutter accommodating space is provided with a cutter penetrating port, the other end of the cutter accommodating space is communicated with the cutter penetrating hole, and a lateral opening is arranged on the side surface of the annular structure and communicated with the cutter accommodating space and the notch.

2. The head restraint sleeve as claimed in claim 1, wherein the head segment plate is C-shaped or U-shaped.

3. The handpiece limit sleeve of claim 1, wherein the shortest radial length of the cutter accommodating space is greater than or equal to the shortest radial length of the cutter penetration hole.

4. The handpiece limit sleeve according to claim 3, wherein the shortest radial length of the cutter penetration hole is greater than or equal to the shortest radial length of the cutter penetration hole and the shortest radial length of the cutter accommodation space.

5. The handpiece restraint sleeve of claim 1 wherein the annular structure is formed from a plurality of sub-structures arranged annularly.

6. The head restraint sleeve as claimed in claim 1, wherein the head segment plate, the head adapter portion, and the cutter restraint portion are integrally formed of metal and are formed by three-dimensional printing.

7. The handpiece limit sleeve of claim 1, further comprising a reinforcing rib disposed on the outer edges of the handpiece adapter portion and the cutter limit portion.

8. The head restraint sleeve as claimed in claim 1, wherein the first side of the head segment plate is against which the head abuts.

9. A kind of implant spacing tool group, characterized in that, include:

a hand-held implement including a handpiece for driving a tool, the handpiece having a tool mounting side; and

a plurality of aircraft nose limit sleeve can overlap respectively outside this aircraft nose is located, and each this aircraft nose limit sleeve further includes:

the machine head section plate is provided with a first side and a second side, a cutter penetrating hole penetrates through the first side and the second side in the center of the machine head section plate, and a notch is formed in the side surface of the machine head section plate and communicated with the cutter penetrating hole;

a machine head adapting part which is arranged on the first side and is provided with a machine head adapting structure corresponding to the machine head, so that the machine head is detachably and fixedly arranged in the machine head adapting structure, and the cutter mounting side is abutted against the first side; and

a tool limiting part arranged at the second side and provided with an annular structure, wherein a tool containing space is arranged in the annular structure, one end of the tool containing space is provided with a tool penetrating port, the other end of the tool containing space is communicated with the tool penetrating hole, and a lateral opening is arranged on the side surface of the annular structure and communicated with the tool containing space and the gap.

10. A kind of implant guides the spacing tool set, characterized by, include:

a hand-held implement including a handpiece for driving a tool, the handpiece having a tool mounting side;

a plurality of aircraft nose limit sleeve can overlap respectively outside this aircraft nose is located, and each this aircraft nose limit sleeve further includes:

the machine head section plate is provided with a first side and a second side, a cutter penetrating hole penetrates through the first side and the second side in the center of the machine head section plate, and a notch is formed in the side surface of the machine head section plate and communicated with the cutter penetrating hole;

a machine head adapting part which is arranged on the first side and is provided with a machine head adapting structure corresponding to the machine head, so that the machine head is detachably and fixedly arranged in the machine head adapting structure and the cutter mounting side is abutted against the first side; and

a tool limiting part arranged at the second side and provided with an annular structure, wherein a tool accommodating space is arranged in the annular structure, one end of the tool accommodating space is provided with a tool penetrating port, the other end of the tool accommodating space is communicated with the tool penetrating hole, and a lateral opening is arranged on the lateral surface of the annular structure and communicated with the tool accommodating space and the gap; and

the tooth implantation guide sleeve is provided with an axial guide lead hole corresponding to the machine head limiting sleeve so as to allow the machine head limiting sleeve to axially move, and the bottom of the tooth implantation guide sleeve is provided with a guide sleeve cutter through hole.

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