CN103550003A - Easily-removing implant device and screwing-out tool thereof - Google Patents
Easily-removing implant device and screwing-out tool thereof Download PDFInfo
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- CN103550003A CN103550003A CN201310580805.3A CN201310580805A CN103550003A CN 103550003 A CN103550003 A CN 103550003A CN 201310580805 A CN201310580805 A CN 201310580805A CN 103550003 A CN103550003 A CN 103550003A
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Abstract
The invention discloses an easily-removing implant device and a screwing-out tool thereof. The easily-removing implant device comprises an implant, a base station and a central bolt; the easily-removing implant device is characterized in that the implant comprises a gum-penetrating neck part and a head part, wherein a thread is formed on the outer surface of the head part, at least two spiral self-tapping grooves are also formed in the outer surface of the head part, a connecting hole coaxial with the implant is formed in the implant, the connecting hole comprises a tapered hole, an anti-rotation hole, an implant taking-out section and a blind threaded hole, which are sequentially connected coaxially, the base station comprises a dental crown connecting section and an implant connecting section, the implant connecting section comprises a conical table and an anti-rotation column, a stepped hole matched with the central bolt is formed in the base station, and the central bolt penetrates through the stepped hole to be connected with the blind threaded hole, so that the base station and the implant are fixed integrally. According to the easily-removing implant device, the implant taking-out section with a reverse thread is additionally arranged in the implant, the problem that a part of the implant, which is remained in dentale due to fracture of the implant, is difficult to take out is solved, and the easily-removing implant device has the advantages of simple structure, strong practicability, and the like.
Description
Technical field
The present invention relates to oral cavity medical apparatus field, implantation body's device of specifically a kind of easy taking-up and back-out instrument thereof.
Background technology
Along with the development of tooth-planting technology, the technology of " implant tooth " is gradually ripe and stable.Implant tooth is first the high titanium artificial tooth root of biocompatibility to be inserted in teeth groove, fix and sew up, and after several months after the bone stable connection in artificial tooth root and teeth groove, then carry out follow-up artificial tooth installation.Because artificial tooth root is to be directly connected with bone, can provide preferably support force.Because it can be to chewing very popular compared with hard food.
As a rule, implantation body is divided into heeling-in shape implantation body and non-heeling-in shape implantation body.The shortcoming of heeling-in implantation body is need to wait implantation body and synosteosis to carry out second operation after good to cut soft tissue, for the follow-up actions such as base station and corona are installed.Healing cycle is long, to patient, brings extra misery.But not gum section is worn owing to being provided with by heeling-in implantation body, can avoid second operation to palliate the agonizing sufferings.But shortcoming is also obvious: structural strength is poor, because the gum section of wearing of cervical region is to be positioned at relatively more soft soft tissue, so it is comparatively not enough to pass the support force of wearing gum part of horizontal direction of bone plane, thereby the shearing that is subject to horizontal direction when cervical region is when exert pressure, easily there is the risk of wearing gum section and screw-locking structure fracture, once wear gum section and screw-locking structure fracture, not only remaining spiral lock is still locked on this and plants in tooth body but also the implantation body of fracture still stays in alveolar bone, take out and be difficult for, repair difficult.
Summary of the invention
According to the technical problem of above-mentioned proposition, and provide a kind of implantation body's device and back-out instrument thereof of easy taking-up.When utilization of the present invention arranges one section of taking-up Duan，Dang implantation body of screwed implantation body device along bone plane fracture in implantation body, with supporting with it back-out instrument, the implantation body remaining in bone can be screwed out, thereby solve the difficult problem of taking out.
For achieving the above object, the technological means that the present invention adopts is as follows:
Implantation body's device of taking-up, comprises implantation body, base station and central bolt, it is characterized in that:
Described implantation body comprises wears gum cervical region and head, and described head outer surface is provided with screw thread, is also provided with at least two helical form self tapping grooves on the outer surface of described head;
Described implantation body inside is provided with the connecting hole coaxial with described implantation body, the opening of described connecting hole with described in to wear the top of gum cervical region concordant, described connecting hole comprises the coaxial conical bore connecting in turn, anti-rotation hole, the tapped blind hole that implantation body takes out section and matches with binding thread on described central bolt, described implantation body takes out section and is provided with the thread groove reverse with described head outer surface thread, the diameter of described implantation body taking-up section is greater than the diameter of described tapped blind hole, preferably, it is reverse for being provided with head outer surface thread that implantation body takes out section, cylindrical thread groove, the diameter that implantation body takes out section is greater than tapped blind hole, be less than the anti-rotation hole on top, make thread groove form herein cavity after implantation body's device installation,
Described base station comprises corona linkage section and implantation body's linkage section, and described implantation body linkage section comprises and described conical bore frustum that match, that have Morse's taper and the anti-rotation post matching with described anti-rotation hole that is arranged on described frustum lower end; Described base station inside is provided with the shoulder hole matching with described central bolt;
Described central bolt is connected with described tapped blind hole through described shoulder hole, and described base station and described implantation body are fixed as one.
Further, the head of described implantation body is frustum, the structure of head and natural root of the tooth is approached, to improve the long-time stability of implantation body; The conical surface of head frustum of the present invention and the angle of horizontal plane are about 70 °-85 °, the bigger diameter end of described head frustum near described in wear gum cervical region, described head is arc surface away from the one end of wearing gum cervical region, the radius of arc surface is no more than 1/2L, arc surface the stress that can effectively disperse head is set, reduce the damage to spongy bone; The helical form self tapping groove arranging on the outer surface of described head is distributed on described head outer surface, preferably, the number of helical form self tapping groove is 3, the hand of spiral of described helical form self tapping groove is identical with hand of thread spiral, and the lead angle of described helical form self tapping groove is different from the lead angle of screw thread.Lead angle difference is mainly to prevent that bone bits from discharging implantation body outward by helical form self tapping groove and screw thread, conventionally the lead angle of described helical form self tapping groove is greater than the lead angle of screw thread, above-mentioned helical form self tapping groove is the bone bits that produce for holding self tapping process, shortens bone healing time.
Further, described helical form self tapping groove is comprised of two arc surfaces, and the binding site of two arc surfaces is tangent connection, and from the miner diameter end of described head frustum, the bigger diameter end to described head frustum shoals the degree of depth of described helical form self tapping groove gradually.Above-mentioned helical form self tapping groove is the cell body of length direction both ends open, show as two tangent formation cell bodies of arc surface (as shown in Figure 4) that radius is different, connect the angle that smoothly there is no projection or depression, in the process that helical form self tapping Cao implantation body installs, can realize self tapping function, the covering of the fan angle that corresponding entrance angle place arc surface and implantation body intersection form is larger, to guarantee enough structural strengths and sharp-pointed entrance angle; The radius of another tangent arc surface need be larger with it, the bone bits that get off in order to hold self tapping.In self tapping process, the anterior angle of helical form self tapping groove (being that small-radius arc forms with implantation body) contacts gradually with osseous tissue, make cutting force and extruding force more reasonable, avoid bone injury, meanwhile, helical form self tapping groove is than the easier hold bone bits of general fluting, reduces or avoids the resistance of implantation body in screw-in process gradually, can effectively anti-rotation after helical form self tapping groove hold bone bits, stability is high.
Further, the screw thread that described head outer surface is provided with is asymmetric double thread, and the cross sectional shape that described asymmetric double thread shows as tooth form is asymmetric form, and as shown in Figure 3, tooth form cross section is approximate trapezoid, between circular arc connect.The angle of described asymmetric double thread lower limb and horizontal plane is 15 °-20 °, be preferably 15 °, the angle of described asymmetric double thread top edge and horizontal plane is 30 °-40 °, is preferably 35 °, the pitch of described asymmetric double thread is 1/10L-1/8L, is preferably 1/10L; The depth of thread is no more than 1/5R, is preferably 1/20L.The length of described helical form self tapping groove is 1/5L-7/10L, is preferably 1/2L, and the length of helical form self tapping groove refers to the vertical dimension between self tapping groove two-end-point; The degree of depth of described helical form self tapping groove is less than 1/2R, being the darkest place of described helical form self tapping groove should be greater than 1/2R apart from the distance of implantation body's axis, to guarantee that there are enough structural strengths in implantation body, wherein, L is implant diameter, and according to Asian oral environment and operation technique requirement, L is 4mm-18mm, R is the maximum radius (being the local place radius of a circle that head is the thickest) of described head, L ︰ R=1.8-3 ︰ 1.
Further, described in to wear gum cervical region be that radius is the arc surface of R, described in wear gum cervical region height (from the described end face of gum cervical region of wearing to the axial distance of the position with head handing-over) be R; Described wearing is provided with the chamfering round platform of 40 °-50 ° between the top of gum cervical region and the opening of described connecting hole, be preferably 45 °, the maximum gauge place of described chamfering round platform (be described chamfering round platform with described in wear the position that gum cervical region contacts) is 3R, the axial height of described chamfering round platform is 0.5mm-0.7mm, is preferably 0.6mm.
Further, the taper hole bus of the conical bore in described implantation body and the angle between axis are 10 °-15 °, and the degree of depth of described conical bore is 1/2R; Described anti-rotation hole is the hole of quincunx hole or octagonal hole or other section forms, described quincunx hole is that cross section is quincuncial through hole, and its petal number is not limit, and is preferably hexagonal Flos Mume, described octagonal hole is that cross section is octagonal through hole, and described anti-rotation hole is not limited to above-mentioned form; The degree of depth in described anti-rotation hole is 1/2R; The depth of thread that described implantation body takes out section thread groove is 1/30L, and the pitch of described thread groove is 1/20L, and the degree of depth of described thread groove is 1/10L; The degree of depth of described tapped blind hole is R-3/2R.
Further, described corona linkage section is cone, and that described corona linkage section is provided with is that depth length differs, for preventing the oval cross section of corona rotation.Above-mentioned oval cross section can effectively increase the adaptation of base station and corona, prevents corona rotation and loosening, also can be set to non slip surface or other can play the form of constructed effect.
Further, between the bolt head of described central bolt and screw rod, be provided with transition frustum, in the shoulder hole of described transition frustum and described base station, corresponding taper seat matches, and avoids this cooperation place to form right angle corner, reduce the stress concentration of corner, increase and be fastenedly connected stability.It is the frustum of 30 ° that described frustum is preferably angle, described frustum can be set to the form with described central bolt one, also can adopt the packing ring arranging with frustum equal angular, central bolt threaded portion length is 1.5mm-2.3mm, matches with described tapped blind hole.In described bolt head, be provided with the driving hole for central bolt described in slewing maneuver, generally adopt hex wrench hole.
Implantation body's linkage section of described base station matches with the connecting hole of described implantation body, matches in conical bore and anti-rotation hole that the frustum that implantation body's linkage section of base station is provided with, anti-rotation Zhu Yu implantation body are provided with.Base station adopts frustum and the conical bore with Morse's taper to coordinate with implantation body, conical surface presses close to form cold welding effect mutually, effectively prevent the generation of micro-leakage, eliminate the fine motion between base station and implantation body, and gmatjpdumamics is separated into axially and both direction radially, prevents that stress concentrations and central screw from fractureing; Base station adopts anti-rotation post to match with anti-rotation hole with implantation body, has increased contact area, has improved base station and has been connected fastening stability with implantation body, even if can not destroy its inner geometry under higher stress.By mechanical test, anti-rotation post and anti-rotation hole adopt quincunx or octagonal to be connected to compare common hexagon and connect the stress concentration that can reduce 30%, and the edge of anti-rotation post is provided with fillet, can make assembling move more smooth and easy.
Implantation body provided by the invention, base station and central bolt are prepared from by titanium or the high metal material of the other biological compatibility.
Implantation body's device that the present invention easily takes out mainly comprises the steps: in planting process
Soft tissue is cut at position in needs of patients plantation, through the soft tissue cutting, use borer boring in advance on the alveolar bone that need to plant tooth, the diameter in hole is slightly less than implantation body's external diameter, then implantation body is screwed in hole until implantation body to wear gum cervical region lower end equal with bone plane;
Implantation body's linkage section of base station is inserted in the connecting hole of implantation body, by thering is frustum and the anti-rotation post of Morse's taper, realizes directed cooperation;
The screw rod of described central bolt coordinates with the tapped blind hole of implantation body through shoulder hole, can realize the fixing of implanting body of artificial tooth, base station and central bolt.
The present invention wears gum cervical region by setting in implantation body, can avoid the secondary operation after implanting, thereby reduces operation number of times, and has reduced the risk of the bone regeneration around implant osseous tissue absorption that may cause due to plantation secondary operation.
Simultaneously, it is a kind of for taking out the back-out instrument of above-mentioned implantation body device that the present invention also provides, it is characterized in that: described back-out instrument comprises back-out portion and action bars, described back-out portion outer surface is provided with implantation body and takes out the back-out screw thread that the thread groove in section matches.Described back-out instrument can be realized manual or motor-driven back-out, during as the motor-driven back-out of need, action bars upper end is arranged to the form matching with motor transmission shaft.
Further, described back-out portion is hollow cylindrical structure, and the diameter of section of hollow circuit cylinder is more than or equal to the diameter of described tapped blind hole.Hollow cylindrical structure can hold the screw rod of described central bolt, and while being convenient to rupture in implantation body, the screw rod of central bolt remains in the back-out that affects implantation body in implantation body.
The present invention has mainly solved following problem:
After implantation body's device is planted successfully, through using for a long time, can cause the fatigue strength of implantation body's material to increase.Under special circumstances, if run into the excessive fracture that is easy to cause implantation body of the shearing force of horizontal direction, by structure (as shown in Figure 5) and concrete operations example, can find out that the implantation body of fracture mainly concentrates on two parts, the one, the end face place of the implantation body of base station and soft tissue level; The fracture (as shown in Figure 8) of wearing gum cervical region and bone plane place of Er Shi implantation body.When producing the first situation, intact due to implantation body and outstanding bone planar section, can screw out implantation body wearing the gum cervical region application of force.And if there is the second situation, implantation body is destroyed its noresidue or little residual in bone plane, is difficult to take out by applying the part that external force remained in alveolar bone.At this moment implantation body of the present invention reverse acting spiral groove will play a role, and due to transverse breakage central bolt, understands some and remains in implantation body, exactly can head it off with the cylindrical structural of hollow in the back-out instrument of mentioning in the present invention.As shown in Figure 8, back-out instrument is screwed in the implantation body of fracture, wherein, hollow space can hold the column part of residual central bolt fracture, reverse thread can be sealed with the thread groove of implantation body, its fastening direction is identical with the direction that implantation body screws out alveolar bone, thereby can take out easily.
Compared with prior art, compare, implantation body provided by the invention device has the advantages such as rational in infrastructure, compactness, easy to operate, science, by increasing reverse acting spiral groove, has solved the part remaining in dentale causing due to implantation body's fracture and has taken out difficult problem.Simultaneously, helical form self tapping Cao Shi implantation body is in the process screwing in, contact gradually with osseous tissue, laddering incision make cutting force and extruding force more reasonable, the power of all directions is more balanced, guarantee the implantation precision of implantation body, effectively avoided causing because cutting force is too low the too high situation that causes bone to burn of difficult cutting and cutting force.According to mechanics principle, spiral groove screw tap is than the fast 30%-50% of the cutting speed of vertical slots screw tap, helical form self tapping groove of the present invention be arranged on the cutting speed that has improved to a certain extent implantation body.Again because the artificial tooth implant of the present invention when screwing in feed go forward one by one successively, rotate vibration smaller, be not easy stuckly, rather than vertically self tapping groove concentrates on single line like that.The more important thing is the distinctive rear chip removal feature of helical form self tapping groove, can avoid bone bits to pile up build-up of pressure and increase the risk that makes alveolar bone cracking, also can make osseous tissue produce certain extruding, increase the stability at initial stage.In addition, the present invention draws suitable helical form self tapping groove size and the tangent design of two arc surface by computer simulation, makes it just to hold the bone bits that produce in self tapping process, accelerated bone healing, reduce operating procedure, reduce patient suffering and realize load at once.Avoided the bone bits that produce in existing implantation body self tapping process to get rid of or to hold, thereby caused occurring that in the corner of self tapping groove stress concentration ，Shi implantation body produces micro-crack at fluting place, cause planting failed situation.Zai You， implantation body of the present invention and base station adopt the conical bore with Morse's taper and the connected mode with the anti-rotation hole of special cross-section form (as quincunx or octagonal).This fit system has higher sealing, good anti-rotatory, accurate polarization and assembles feature smoothly, has effectively avoided planting the rotation of body and base station and loosening generation, and then has increased the life-span of Dental Implant.
The present invention has avoided in waiting between bone integration period by the combination of multi-piece type and non-heeling-in technology, Occlusal interference during patient's chewing on things, and the undercapacity that causes bone to integrate, the stability after tooth is planted in impact; Avoided secondary operation, thereby reduced operation number of times, and reduced the risk of the bone regeneration around implant osseous tissue absorption that may cause due to plantation secondary operation, the present invention can extensively promote in tooth-planting technical field for the foregoing reasons.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Fig. 1 is structural representation of the present invention.
The structural representation of Tu2Shi implantation body of the present invention.
Fig. 3 is the cross section enlarged drawing of screw thread in Fig. 2 of the present invention.
The upward view of Tu4Shi implantation body of the present invention.
Fig. 5 is that the present invention partly cuts open figure in oral cavity.
Fig. 6 is the schematic diagram of manual back-out instrument of the present invention.
Fig. 7 is the schematic diagram of motor-driven back-out instrument of the present invention.
Fig. 8 takes out with back-out instrument the schematic diagram that remains in the implantation body in dentale.
The specific embodiment
As shown in Figure 1, a kind of implantation body's device of easy taking-up, comprises implantation body 1, base station 2 and central bolt 3, and in the present embodiment, implantation body 1 adopts pure titanium material to make.Described implantation body 1 comprises wears gum cervical region 13 and head, and the head of described implantation body 1 is frustum, the bigger diameter end of described head frustum near described in wear gum cervical region 13; The miner diameter end of described head frustum is arc surface 10; The tapering of the frustum of described head is the bionical tapering approaching with natural root of the tooth, can improve just long-time stability.Described head outer surface is provided with screw thread 12, is also provided with three equally distributed helical form self tapping grooves 11 on the outer surface of described head; The hand of spiral of described helical form self tapping groove 11 is identical with screw thread 12 hands of spiral, is dextrorotation, and the lead angle of described helical form self tapping groove 11 is greater than the lead angle of screw thread 12.Described helical form self tapping groove 11(is as shown in Figure 4) by two arc surfaces, formed, be respectively the first arc surface 111 and the second arc surface 112, the binding site 113 of two arc surfaces is tangent connection, can avoid angle to be recessed at the stress concentration of corner, improve implantation body's intensity, from the miner diameter end of described head frustum, the bigger diameter end to described head frustum shoals the degree of depth of described helical form self tapping groove 11 gradually, and the volume of described helical form self tapping groove 11 is with consistent with osseous tissue volume after screw thread extruding.Helical form self tapping groove 11 can be realized the self tapping performance of implantation body 1, reduces operating procedure, and can hold the Gu Xie，Shi implantation body 1 bone integration speed squeezing out in self tapping process and accelerate, increase initial stage and long-time stability.
In the present embodiment, implant diameter L is 10mm.Implantation body's head 18 radius maximum radiuses are R, and L ︰ R is 2.The screw thread 12(that described head outer surface is provided with is as shown in Figure 3) be asymmetric double thread, helical pitch is the pitch of twice, can shorten operating time like this.The included angle B of described asymmetric double thread lower limb and horizontal plane is 15 °, the included angle A of described asymmetric double thread top edge and horizontal plane is 35 °, the pitch of described asymmetric double thread is 1/10L, the depth of thread is no more than 1/5R, the length of described helical form self tapping groove 11 is 1/2L, and the degree of depth of described helical form self tapping groove is less than 1/2R.
The described 1(of implantation body is as shown in Figure 2) inside is provided with the connecting hole coaxial with described implantation body 1, described wearing is provided with the chamfering round platform 14 of 45 ° between the top of gum cervical region 13 and the opening of described connecting hole, the maximum gauge place of described chamfering round platform 14 is 3R, and the axial height of described chamfering round platform 14 is 0.6mm; The described gum cervical region 13 of wearing, for the smooth cambered surface that radius is R, is beneficial to the growth of gingiva cuff, described in wear gum cervical region 13 height be R.
Described connecting hole comprises the tapped blind hole 18 that the coaxial conical bore 15 connecting in turn, anti-rotation Kong16, implantation body take out section 17 and match with binding thread 31 on described central bolt 3, described implantation body takes out section 17 and is provided with the thread groove reverse with described head outer surface thread 12, and the diameter of described implantation body taking-up section 17 is greater than the diameter of described tapped blind hole 18; Taper hole bus and the angle between axis of the conical bore 15 in described implantation body 1 are 15 °, and the degree of depth of described conical bore 15 is 1/2R; Described anti-rotation hole 16 is octagonal hole, and the degree of depth in described anti-rotation hole 16 is 1/2R; The depth of thread that described implantation body takes out the thread groove of section 17 is 1/30L, and the pitch of described thread groove is 1/20L, and the degree of depth of described thread groove is 1.1mm; The degree of depth of described tapped blind hole is R-3/2R.
Described base station 2 comprises corona linkage section 26He implantation body linkage section, the eight prismatic anti-rotation posts 22 that match with described anti-rotation hole 16 that described implantation body linkage section comprises that match with described conical bore 15, to have Morse's taper frustum 23 and is arranged on described frustum 23 lower ends.The situation that causes base station 2 and implantation body 1 to fit together perfectly for fear of mismachining tolerance in addition, the end of anti-rotation post 22 is provided with fillet 21, and the anti-rotation hole 16 in fillet 21Yu implantation body 1 coordinates so that assembling action is more smooth and easy.
Described base station 2 inside are provided with the shoulder hole matching with described central bolt 3; Described corona linkage section 26 is cone, that described corona linkage section 26 is provided with is that depth length differs, for preventing the oval cross section of corona rotation, as shown in fig. 1, in the present embodiment, the oval cross section performance length semi-elliptical cross-section that be crisscross arranged, deep mixed arranging on described corona linkage section 26, long dark oval cross section 25 is interspersed with narrow and shallow oval cross section 24.
Between the bolt head 34 of described central bolt 3 and screw rod 32, be provided with transition frustum 33, in the shoulder hole of described transition frustum 33 and described base station 2, corresponding taper seat matches, described filtration frustum 33 adopts the frustum of 30 °, is provided with the hex wrench hole 35 for central bolt described in slewing maneuver 3 in described bolt head 34.
Described central bolt 3 is threaded with described tapped blind hole 18 through described shoulder hole, and described base station 2 and described implantation body 1 are fixed as one.
Disclosed by the invention a kind of for taking out the back-out instrument of implantation body's device, described back-out instrument can be divided into manual back-out instrument 4B(as shown in Figure 6) and motor-driven back-out instrument 4A(is as shown in Figure 7) comprising back-out portion and action bars, described back-out portion outer surface is provided with implantation body and takes out the back-out screw thread 41 that the thread groove in section 17 matches.Described back-out portion is hollow cylindrical structure 42, and the diameter of section of hollow circuit cylinder is more than or equal to the diameter of described tapped blind hole 18.
Concrete use step of the present invention is as follows:
As shown in Figure 5, boring on alveolar bone 52 is cut by gingiva 51 in the position of first implanting at needs of patients, the diameter in hole will be slightly less than the diameter of implantation body 1, then implantation body 1 is screwed in, the screw thread 12 that implantation body 1 arranges by head outer surface is fixed in alveolar bone 52, again base station 2 is arranged in implantation body 1, finally puts corona part and use the fastening implantation body 1 of central bolt 3 and base station 2.
As shown in Figure 5 and Figure 8, implantation body 1, after planting successfully, through using for a long time, can cause the fatigue strength of implantation body's material to increase.Under special circumstances, if run into the excessive fracture that is easy to cause implantation body of the shearing force of horizontal direction, by structure and example, we can find out that the implantation body of fracture mainly concentrates on two parts, the one, and the end face place of base station 2 and the implantation body 1 of soft tissue level; The fracture of wearing gum cervical region and bone plane place of Er Shi implantation body 1.When producing the first situation, intact due to implantation body 1 and outstanding bone planar section, can screw out implantation body 1 wearing the gum cervical region application of force.And if there is the second situation, implantation body 1 is destroyed its noresidue or little residual in bone plane, is difficult to take out by applying the part that external force remained in alveolar bone 52.At this moment the reverse acting spiral grooves that the implantation body of implantation body 1 taking-up section 17 arranges will play a role, because transverse breakage central bolt 3 is understood some and is remained in implantation body 1, adopt the back-out instrument of hollow to screw in the implantation body of fracture, the hollow cylindrical structure 42 of back-out instrument can be realized the screw rod of residual central bolt 3 32 parts are contained in wherein, screwing out screw thread 41 can be sealed with the thread groove of implantation body 1, its fastening direction is identical with the direction that implantation body 1 screws out alveolar bone 52, thereby can be easily by its taking-up.
The above; it is only the preferably specific embodiment of the present invention; but protection scope of the present invention is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; according to technical scheme of the present invention and inventive concept thereof, be equal to replacement or changed, within all should being encompassed in protection scope of the present invention.
Claims (10)
1. the implantation body's device easily taking out, comprises implantation body, base station and central bolt, it is characterized in that:
Described implantation body comprises wears gum cervical region and head, and described head outer surface is provided with screw thread, is also provided with at least two helical form self tapping grooves on the outer surface of described head;
Described implantation body inside is provided with the connecting hole coaxial with described implantation body, the opening of described connecting hole with described in to wear the top of gum cervical region concordant, described connecting hole comprises the tapped blind hole that the coaxial conical bore connecting in turn, anti-rotation Kong, implantation body take out section and match with binding thread on described central bolt, described implantation body takes out section and is provided with the thread groove reverse with described head outer surface thread, and the diameter of described implantation body taking-up section is greater than the diameter of described tapped blind hole;
Described base station comprises corona linkage section and implantation body's linkage section, and described implantation body linkage section comprises and described conical bore frustum that match, that have Morse's taper and the anti-rotation post matching with described anti-rotation hole that is arranged on described frustum lower end; Described base station inside is provided with the shoulder hole matching with described central bolt;
Described central bolt is connected with described tapped blind hole through described shoulder hole, and described base station and described implantation body are fixed as one.
2. implantation body's device of easy taking-up according to claim 1, is characterized in that: the head of described implantation body is frustum, the bigger diameter end of described head frustum near described in wear gum cervical region, described head is arc surface away from the one end of wearing gum cervical region; The helical form self tapping groove arranging on the outer surface of described head is distributed on described head outer surface, and the hand of spiral of described helical form self tapping groove is identical with hand of thread spiral, and the lead angle of described helical form self tapping groove is different from the lead angle of screw thread.
3. implantation body's device of easy taking-up according to claim 1, it is characterized in that: described helical form self tapping groove is comprised of two arc surfaces, the binding site of two arc surfaces is tangent connection, and from the miner diameter end of described head frustum, the bigger diameter end to described head frustum shoals the degree of depth of described helical form self tapping groove gradually.
4. according to implantation body's device of the easy taking-up described in claims 1 to 3, it is characterized in that: the screw thread that described head outer surface is provided with is asymmetric double thread, the angle of described asymmetric double thread lower limb and horizontal plane is 15 °-20 °, the angle of described asymmetric double thread top edge and horizontal plane is 30 °-40 °, the pitch of described asymmetric double thread is 1/10L-1/8L, the depth of thread is no more than 1/5R, the length of described helical form self tapping groove is 1/5L-7/10L, and the degree of depth of described helical form self tapping groove is less than 1/2R; Wherein, L is implant diameter, and L is 4mm-18mm, the maximum radius that R is described head, L ︰ R=1.8-3 ︰ 1.
5. implantation body's device of easy taking-up according to claim 1, is characterized in that: described in to wear gum cervical region be that radius is the arc surface of R, described in wear gum cervical region height be R; Described wearing between the top of gum cervical region and the opening of described connecting hole is provided with the chamfering round platform of 40 °-50 °, and the maximum gauge place of described chamfering round platform is 3R, and the axial height of described chamfering round platform is 0.5mm-0.7mm.
6. implantation body's device of easy taking-up according to claim 1, is characterized in that: the taper hole bus of the conical bore in described implantation body and the angle between axis are 10 °-15 °, and the degree of depth of described conical bore is 1/2R; Described anti-rotation hole is quincunx hole or octagonal hole, and the degree of depth in described anti-rotation hole is 1/2R; The depth of thread that described implantation body takes out section thread groove is 1/30L, and the pitch of described thread groove is 1/20L, and the degree of depth of described thread groove is 1/10L; The degree of depth of described tapped blind hole is R-3/2R.
7. implantation body's device of easy taking-up according to claim 1, is characterized in that: described corona linkage section is cone, and that described corona linkage section is provided with is that depth length differs, for preventing the oval cross section of corona rotation.
8. implantation body's device of easy taking-up according to claim 1, it is characterized in that: between the bolt head of described central bolt and screw rod, be provided with transition frustum, in the shoulder hole of described transition frustum and described base station, corresponding taper seat matches, and is provided with the driving hole for central bolt described in slewing maneuver in described bolt head.
9. for taking out a back-out instrument for implantation body as claimed in claim 1 device, it is characterized in that: described back-out instrument comprises back-out portion and action bars, described back-out portion outer surface is provided with implantation body and takes out the back-out screw thread that the thread groove in section matches.
10. back-out instrument according to claim 9, is characterized in that: described back-out portion is hollow cylindrical structure, and the diameter of section of hollow circuit cylinder is more than or equal to the diameter of described tapped blind hole.
Priority Applications (1)
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| CN201310580805.3A CN103550003B (en) | 2013-11-18 | 2013-11-18 | Implantation body's device of easy taking-up and the instrument of back-out thereof |
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| CN104546166A (en) * | 2015-01-15 | 2015-04-29 | 大连三生科技发展有限公司 | Implant removal tool and removal method |
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| CN106491226A (en) * | 2016-12-23 | 2017-03-15 | 大连三生科技发展有限公司 | A kind of implant system with straight base station |
| CN106725929A (en) * | 2016-12-23 | 2017-05-31 | 大连三生科技发展有限公司 | A kind of straight base station implant system of titanium zirconium anti-rotation |
| CN106923919A (en) * | 2017-03-29 | 2017-07-07 | 西安康拓医疗技术有限公司 | A kind of personalized planting body base station component |
| CN107334552A (en) * | 2017-06-27 | 2017-11-10 | 浙江广慈医疗器械有限公司 | A kind of base station separator |
| WO2018010418A1 (en) * | 2016-07-12 | 2018-01-18 | 佛山市安齿生物科技有限公司 | Implant system having quickly replaceable central screws |
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| CN111658197A (en) * | 2020-06-23 | 2020-09-15 | 西安交通大学口腔医院 | Dental implant |
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| GR20170100383A (en) * | 2017-08-21 | 2019-04-22 | Vp Innovato Holdings Ltd | Dental abutment core and method for manufacturing a dental abutment |
| CN109567983A (en) * | 2018-11-28 | 2019-04-05 | 北京航空航天大学 | Horn-like implantation material and its method for implantation |
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| CN115444597A (en) * | 2022-08-16 | 2022-12-09 | 广东健齿生物科技有限公司 | Bidirectional thread dental implant |
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