CN207855795U - A kind of dental handpiece - Google Patents

Abstract

The utility model discloses a kind of dental handpieces, it is fixedly installed guide rod outside first safety sleeve, guide rod is arranged along the first safety sleeve axially direction is parallel to, one end of guide rod is fixedly connected with the first safety sleeve, the other end of guide rod is connected with gear and connects block, is provided with limited block outside guide rod, limited block offers first through hole along the axial direction of the first safety sleeve, limited block is socketed on outside limited block, and one end that the close gear of limited block connects block connects block with gear and crimps；It is provided with locking assembly outside guide rod, locking assembly includes the sliding part that can be moved along a straight line along guide rod, and sliding part can be fixed in the locking member on guide rod, the end face limited block of the close limited block of sliding part, sliding part offers the second through-hole along the axial direction of the first safety sleeve, and sliding part is socketed on outside guide rod.The utility model can improve security performance, effectively prevent accidentally injuring, and doctor's control can be helped to drill through depth, ensure surgical effect.

Description

A kind of dental handpiece

Technical field

The utility model belongs to oral cavity medical apparatus technical field, and in particular to a kind of dental handpiece.

Background technology

Dental handpiece is a kind of common oral cavity medical apparatus, coordinates different shape vehicle needle by high speed rotation, can be right Oral hard tissue carries out positioning drilling, and expansion is even cut, and currently used dental handpiece includes handle, is located at handle one end Hand machine head, the vehicle needle that is connected with hand machine head outside head and by clamp, but since the vehicle needle of dental handpiece is existing Doctor when drilling to patient in implant operation, be difficult to hold to the depth drilled through, be entirely the experience by doctor；Than If doctor needs to drill down to 9 millimeters to the tooth of patient, but during boring tooth, doctor can only on vehicle needle scale, Individual feels and experience is gone to judge to have bored mostly deep, may only drill through 6 millimeters, but doctor is but with to have reached scheduled 9 Millimeter, because usually vehicle needle has multiple scales, be easy in surgical procedure because regarding to coordinate the implant hole for drilling through different depth Feel that difference generates error, even drills through depth more than expected to injure nerve channel or maxillary sinus so that surgical procedure cannot get It ensures.

Invention content

The technical issues of being easy to generate error because of visual difference when the utility model drills for existing dental handpiece, proposes one Kind can improve security performance, effectively prevent accidentally injuring, and doctor's control can be helped to drill through depth, ensure the dentistry hand of surgical effect Machine.

In order to solve the above-mentioned technical problem, the technical solution adopted in the utility model is：

A kind of dental handpiece, including handle, the hand machine head being fixedly connected with handle are set on hand machine head and for drilling Vehicle needle, the end outer surface that hand machine head is connect with vehicle needle offers external screw thread, and hand machine head is fixedly connected with the first safety sleeve, First safety sleeve is socketed in an axial direction outside vehicle needle, and the first safety sleeve offers interior spiral shell close to the terminal interior surface of hand machine head Line, the first safety sleeve is threadably secured with hand machine head to be connect, and is socketed with the second safety sleeve outside the first safety sleeve, and second Safety sleeve is formed in an axial direction and between the end and the first safety sleeve of hand machine head and can make the first safety sleeve and the The gap of two safety sleeve relative motions, end of the vehicle needle far from hand machine head are stretched out outside the second safety sleeve；

Guide rod is fixedly installed outside first safety sleeve, guide rod edge is parallel to the first safety sleeve axially direction and sets It sets, one end of guide rod is fixedly connected with the first safety sleeve, and the other end of guide rod is connected with gear and connects block, is arranged outside guide rod There are limited block, limited block to offer first through hole along the axial direction of the first safety sleeve, limited block is socketed on outside limited block, limited block One end that close gear connects block connects block with gear and crimps；Locking assembly is provided with outside guide rod, locking assembly includes can be straight along guide rod The sliding part of line movement, and sliding part can be fixed in the locking member on guide rod, the end of the close limited block of sliding part is just To limited block, sliding part offers the second through-hole along the axial direction of the first safety sleeve, and sliding part is socketed on outside guide rod.

Preferably, locking member is trip bolt, the head of trip bolt is crimped with sliding part, and sliding part is along the first safety The radial direction of sleeve and third through-hole is offered corresponding to guide rod, the third through-hole inner surface of sliding part offers internal thread, tightly Gu the threaded rod of screw is threadedly coupled with the internal thread of sliding part, trip bolt is crimped with guide rod.

Preferably, guide rod, locking assembly, limited block and gear connect block and are disposed as the axial circular around the first safety sleeve All arrays it is multiple.

Preferably, guide rod, locking assembly, limited block and gear connect block and are disposed as two.

Preferably, offering multiple cooling holes, cooling hole on the outer wall of the first safety sleeve and the second safety sleeve For through-hole.

Preferably, the quantity of cooling hole is set as 14.

Preferably, gap is along the size of the second safety sleeve axial direction between the second safety sleeve and the first safety sleeve 3mm。

Preferably, two safety sleeves in an axial direction and far from hand machine head end be rubber layer.

Preferably, the size of the rubber layer of the second safety sleeve in an axial direction is the second safety sleeve overall size in an axial direction 1/5th.

Preferably, the size of the rubber layer of the second safety sleeve in an axial direction is equal to the first safety sleeve and the second condom Size of the gap along the second safety sleeve axial direction between cylinder.

The utility model advantageous effect is:

A kind of dental handpiece of the utility model is by being arranged the first safety sleeve, the second safety sleeve, guide rod and locking Component realizes the accurate adjusting with respect to the first safety sleeve straight-line displacement to the second safety sleeve, while effectively avoiding second Safety sleeve is contacted with the hard of dental surface, and then can effectively improve the security performance of dental handpiece, and prevents from performing the operation The accidental injury that tooth is generated in the process, and then the accuracy of drilling is effectively ensured, and effectively avoid the damage of dental surface.

Description of the drawings

The content expressed by this specification attached drawing and the label in figure are briefly described below：

Fig. 1 is a kind of overall structure diagram of dental handpiece of the utility model；

Fig. 2 is the structural schematic diagram under a kind of dental handpiece immunization with gD DNA vaccine of the utility model；

Fig. 3 is one of connection relationship diagram between the first safety sleeve of the utility model and the second safety sleeve；

Fig. 4 is two of connection relationship diagram between the first safety sleeve of the utility model and the second safety sleeve；

1, handle in figure；2, hand machine head；3, vehicle needle；4, the first safety sleeve；5, the second safety sleeve；6, guide rod； 7、 Locking assembly；8, limited block；9 gears connect block；10, cooling hole.

Specific implementation mode

Below against attached drawing, by the description of the embodiment, for example involved each of specific embodiment of the present utility model Mutual alignment and connection relation, the effect of each section and operation principle, manufacture work between the shape of component, construction, each section Skill and operate with method etc., are described in further detail, to help invention of the those skilled in the art to the utility model Design, technical solution have more complete, accurate and deep understanding.

In the description of the present invention, it should be noted that the length direction of air conditioner indoor unit is the transverse direction after installation； The orientation or positional relationship of the instructions such as term "inner", "outside", "upper", "lower", "front", "rear" is based on attached position shown in FIG. 1 Relationship is merely for convenience of describing the present invention and simplifying the description, and does not indicate or imply the indicated device or element must There must be specific orientation, with specific azimuth configuration and operation, therefore should not be understood as limiting the present invention.This Outside, term " first ", " second ", " third " are used for description purposes only, and are not understood to indicate or imply relative importance.

As shown in Figures 1 to 4, a kind of dental handpiece, including handle 1, the hand machine head 2 being fixedly connected with handle 1, are set to On hand machine head 2 and for the vehicle needle 3 of drilling, the end outer surface that hand machine head 2 is connect with vehicle needle 3 offers external screw thread, in order to keep away Exempt from the phenomenon for drilling in tooth boring procedure excessive generation, hand machine head 2 is fixedly connected with the first safety sleeve 4, the first safety Sleeve 4 is socketed in an axial direction outside vehicle needle 3, and the first safety sleeve 4 offers internal thread close to the terminal interior surface of hand machine head 2, the One safety sleeve 4 is threadably secured with hand machine head 2 to be connect, and is socketed with the second safety sleeve 5 outside the first safety sleeve 4, and second Safety sleeve 5 is formed in an axial direction and between the end and the first safety sleeve 4 of hand machine head 2 and can make the first safety sleeve 4 With the gap of 5 relative motion of the second safety sleeve, end of the vehicle needle 3 far from hand machine head 2 is stretched out outside the second safety sleeve 5；

Further as shown in Figures 1 to 4, in order to avoid making due to the hard contact with dental surface in tooth boring procedure Tooth is by shock loading, and then the phenomenon for keeping tooth impaired occurs, and is fixedly installed guide rod 6 outside the first safety sleeve 4, leads To bar 6 along the setting of 4 axially direction of the first safety sleeve is parallel to, one end of guide rod 6 is fixed with the first safety sleeve 4 to be connected It connects, the other end of guide rod 6 is connected with gear and connects block 9, is provided with limited block 8 outside guide rod 6, limited block 8 is along the first safety sleeve 4 Axial direction offer first through hole, limited block 8 is socketed on outside limited block 8, and limited block 8 connects one end of block 9 close to gear and connects block 9 with gear Crimping；

Further as shown in Figures 1 to 4, in order to realize the limitation to the position along guide rod 6 of limited block 8, outside guide rod 6 It is provided with locking assembly 7, locking assembly 7 includes the sliding part that can be moved along a straight line along guide rod 6, and can fix sliding part in leading Locking member on bar 6, the end face limited block 8 of the close limited block 8 of sliding part, sliding part is along the first safety sleeve 4 The second through-hole axially is offered, sliding part is socketed on outside guide rod 6.

For the structure of above-mentioned locking assembly 7, concretely：As shown in Figures 1 to 4, locking member is trip bolt, fastening The head of screw is crimped with sliding part, sliding part along the first safety sleeve 4 radial direction and corresponding to guide rod 6 to offer third logical The third through-hole inner surface in hole, sliding part offers internal thread, and the threaded rod of trip bolt and the internal thread screw thread of sliding part connect It connects, trip bolt is crimped with guide rod 6.The utility model is being ensured by setting locking member to trip bolt to limited block 8 Along guide rod 6 while the limitation of position, cost can be saved, and improve the disassembly efficiency of locking member.

Further, as shown in Figures 1 to 4, it moves along a straight line to improve 5 opposite first safety sleeve 4 of the second safety sleeve Stability, guide rod 6, locking assembly 7, limited block 8 and gear connect block 9 and are disposed as the axial circumference around the first safety sleeve 4 Array it is multiple.The utility model is disposed as by the way that guide rod 6, locking assembly 7, limited block 8 and gear are connect block 9 around the first peace Multiple, the process for making the second safety sleeve 5 move along a straight line in opposite first safety sleeve 4 of the axial circumference array of a full set of cylinder 4 In shaking radially will not occur, and then effectively increase 5 opposite first safety sleeve 4 linear motion of the second safety sleeve Stability.

Preferably, as shown in Figure 1, guide rod 6, locking assembly 7, limited block 8 and gear connect block 9 and be disposed as two, With this while effectively increasing the stability of 5 opposite first safety sleeve 4 linear motion of the second safety sleeve, tooth is reduced The cost of section's mobile phone.

As shown in Figure 1, in order to avoid the damage that high temperature generates sclerous tissues, the first safety sleeve 4 and the second safety sleeve 5 Outer wall on offer multiple cooling holes 10, cooling hole 10 is through-hole.The utility model passes through in the first safety sleeve 4 and Cooling hole 10 is opened up on the outer wall of two safety sleeves 5, realizing over the course for the treatment of can be by cooling hole 10 to because of vehicle needle 3 The damage that the high speed rotation in sclerous tissues and the heat that generates cool down, and then high temperature avoided to generate sclerous tissues.

Preferably, the quantity of cooling hole 10 is set as 14.

In addition, as shown in Figure 1, the shape of cooling hole 10 be ellipse, high temperature gas flow can be played with this and preferably be led Stream acts on, and then high temperature gas flow is avoided to burn to mouth skin.

Preferably, gap is along 5 axial direction of the second safety sleeve between the second safety sleeve 5 and the first safety sleeve 4 Size is 3mm.

Further, in order to preferably avoid the damage of dental surface, the second safety sleeve 5 is in an axial direction and far from hand machine head 2 End be rubber layer, the second safety sleeve 5 is made with this and dental surface is soft contacts, further avoids the damage of dental surface Wound.

Preferably, the size of the rubber layer of the second safety sleeve 5 in an axial direction is the second safety sleeve 5 total ruler in an axial direction Very little 1/5th.

In addition, the size of the rubber layer of the second safety sleeve 5 in an axial direction is equal to the first safety sleeve 4 and the second safety sleeve Gap is transported along the axial size of the second safety sleeve 5 with the contraction of this rubber layer that can ensure the second safety sleeve 5 between 5 It moves and is just completely attached between the first safety sleeve 4 and the second safety sleeve 5 after reaching the limit of, and keep relative stability.

In addition, the first safety sleeve 4 in an axial direction and the end far from hand machine head 2 is also configured as rubber layer, is reduced with this The impact force action generated by collision between first safety sleeve 4 and the second safety sleeve 5 is further avoided in dental surface The damage of dental surface.

In order to further increase the accuracy of tooth drilling, the first safety sleeve 4 is in an axial direction and close to the end of hand machine head 2 Outer surface is provided with the graduated length scales of mark, and length scales correspond between the first safety sleeve 4 and the second safety sleeve 5 Gap setting, the utility model by the way that length scales are arranged in the first safety sleeve 4, can make the second safety sleeve 5 with The relative motion distance of first safety sleeve 4 is clearly indicated, and then improves the accuracy of tooth drilling.

Preferably, it is rubber block that gear, which connects block 9, is avoided with this and damage epidermis when connecing block 9 with oral cavity dermal contact The phenomenon that occur.

In addition, the connection integrated with the second condom same 5 of limited block 8, the stability of limited block 8 is improved with this, and avoid There is a phenomenon where crooked or fall off and occur after long-term work with 5 for second condom.

In order to be better understood from the technical solution of the utility model, as shown in Figures 1 to 4, the utility model dental handpiece Use process be：

When doctor carries out dental operation to patient, the position of tooth and the width selection of surgery location are bored as needed Second safety sleeve 5 of respective diameters, such as when the position performed the operation is wider, then the second peace being relatively large in diameter can be selected A full set of cylinder 5, and the second safety sleeve 5 that when position is relatively narrow then selects diameter smaller；Then the length of the second safety sleeve 5 is selected When spending, such as needing to bore one 9 millimeters of hole downwards from the dental surface of patient, then select length that 3 lower part of vehicle needle can be made to stretch out 6 The safety sleeve of millimeter, if drilling through depth reaches 6 millimeters, adjusts locking assembly 7 when doctor drills to patient teeth Position on guide rod 6 makes the maximum displacement of the second safety sleeve 5 be 3mm, lower end and the sclerous tissues' table of the second safety sleeve 5 Face contacts, at this time the second safety sleeve 5 axially movable, until limited block 8 contacts with locking assembly 7, at this point, doctor's stopping tooth To get to the hole of 9 millimeters deeps accuracy of drilling can be effectively ensured, and effectively avoid the damage of dental surface in section's mobile phone Wound；

It can also pass through safety sleeve side to 5 surface injection cooling water of the second safety sleeve, cooling water in drilling operation Cooling hole 10 on wall reaches vehicle needle 3, cools down to vehicle needle 3 and sclerous tissues.

It can be seen from the above, a kind of dental handpiece of the utility model by be arranged the first safety sleeve 4, the second safety sleeve 5, Guide rod 6 and locking assembly 7 realize the accurate adjusting to 54 straight-line displacement of opposite first safety sleeve of the second safety sleeve, It effectively avoids the second safety sleeve 5 to be contacted with the hard of dental surface simultaneously, and then the safety of dental handpiece can be effectively improved Can, and the accidental injury generated in the course of surgery to tooth is prevented, and then the accuracy of drilling is effectively ensured, and effectively avoid The damage of dental surface.

The utility model is exemplarily described above in conjunction with attached drawing, it is clear that the utility model specific implementation not by The limitation of aforesaid way, as long as using the methodology of the utility model and various unsubstantialities that technical solution carries out change Into, or it is not improved the design of the utility model and technical solution are directly applied into other occasions, in the utility model Protection domain within.The scope of protection of the utility model should be determined by the scope of protection defined in the claims.

Claims (10)

1. a kind of dental handpiece, including handle (1), the hand machine head (2) being fixedly connected with handle (1), are set on hand machine head (2) And for the vehicle needle (3) of drilling, it is characterised in that：The end outer surface that hand machine head (2) is connect with vehicle needle (3) offers outer spiral shell Line, hand machine head (2) are fixedly connected with the first safety sleeve (4), and the first safety sleeve (4) is socketed on vehicle needle (3) outside in an axial direction, the One safety sleeve (4) offers internal thread, the first safety sleeve (4) and hand machine head (2) close to the terminal interior surface of hand machine head (2) It is threadably secured connection, is socketed with the second safety sleeve (5) outside the first safety sleeve (4), the second safety sleeve (5) is in an axial direction And being formed between the end and the first safety sleeve (4) of hand machine head (2) can make the first safety sleeve (4) safe with second The second safety sleeve (5) is stretched out outside in the gap of sleeve (5) relative motion, end of the vehicle needle (3) far from hand machine head (2)；

Guide rod (6) is fixedly installed outside first safety sleeve (4), guide rod (6) is axial along the first safety sleeve (4) is parallel to Direction setting, one end of guide rod (6) is fixedly connected with the first safety sleeve (4), and the other end of guide rod (6) is connected with gear Block (9) is connect, is provided with limited block (8) outside guide rod (6), limited block (8) offers first along the axial direction of the first safety sleeve (4) Through-hole, limited block (8) are socketed on limited block (8) outside, and one end that the close gear of limited block (8) connects block (9) connects block (9) with gear and crimps；

Locking assembly (7) is provided with outside guide rod (6), locking assembly (7) includes the sliding that can be moved along a straight line along guide rod (6) Part, and sliding part can be fixed in the locking member on guide rod (6), the end face limit of the close limited block (8) of sliding part Block (8), sliding part offer the second through-hole along the axial direction of the first safety sleeve (4), and sliding part is socketed on guide rod (6) outside.

2. dental handpiece according to claim 1, it is characterised in that：Locking member is trip bolt, the head of trip bolt Crimped with sliding part, sliding part along the first safety sleeve (4) radial direction and offer third through-hole corresponding to guide rod (6), it is sliding The third through-hole inner surface of moving part offers internal thread, and the threaded rod of trip bolt is threadedly coupled with the internal thread of sliding part, tightly Gu screw is crimped with guide rod (6).

3. dental handpiece according to claim 1, it is characterised in that：Guide rod (6), locking assembly (7), limited block (8) And gear connects block (9) and is disposed as the multiple of axial circumference array around the first safety sleeve (4).

4. dental handpiece according to claim 3, it is characterised in that：Guide rod (6), locking assembly (7), limited block (8) And gear connects block (9) and is disposed as two.

5. dental handpiece according to claim 1, it is characterised in that：First safety sleeve (4) and the second safety sleeve (5) Outer wall on offer multiple cooling holes (10), cooling hole (10) is through-hole.

6. dental handpiece according to claim 5, it is characterised in that：The quantity of cooling hole (10) is set as 14.

7. dental handpiece according to claim 1, it is characterised in that：Second safety sleeve (5) and the first safety sleeve (4) Between gap along the second safety sleeve (5) axial direction size be 3mm.

8. dental handpiece according to claim 1, it is characterised in that：Second safety sleeve (5) is in an axial direction and far from mobile phone The end of head (2) is rubber layer.

9. dental handpiece according to claim 8, it is characterised in that：The rubber layer of second safety sleeve (5) is in an axial direction Size be the second safety sleeve (5) in an axial direction overall size 1/5th.

10. dental handpiece according to claim 8, it is characterised in that：The rubber layer of second safety sleeve (5) is in an axial direction Size is equal to size of the gap along the second safety sleeve (5) axial direction between the first safety sleeve (4) and the second safety sleeve (5).