CN202982280U - Novel implant retention device - Google Patents
Novel implant retention device Download PDFInfo
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- CN202982280U CN202982280U CN 201220742665 CN201220742665U CN202982280U CN 202982280 U CN202982280 U CN 202982280U CN 201220742665 CN201220742665 CN 201220742665 CN 201220742665 U CN201220742665 U CN 201220742665U CN 202982280 U CN202982280 U CN 202982280U
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Abstract
The utility model provides an implant retention device. The device comprises an implant, a connector and a base table, wherein a thread is arranged outside the implant and a screw hole is formed in the center of the upper part of the implant; a hole is formed in the center of the connector; a cut groove is formed in the upper part of the connector; screw holes are formed in ear lumps on the two sides of the cut groove; a lug fit with the cut groove of the connector is arranged on the lower part of the base table; a hole is formed in the lug; and the connector is connected with the base table via a screw and the implant. The device has a simple structure and high retention load intensity, is low in manufacturing cost, has good primary stability and anti-rotation function, can freely adjust the angle between the base table and the implant and is large in adjustment range, thus being capable of taking full advantages of the bone areas rich in bone mass around the implant, avoiding the dangerous areas and simultaneously obtaining the good common path of insertion, and the device has good clinical application value.
Description
Technical field
This utility model relates to the fixing device of repairing for dental implant, cheekbone plantation, cranium Maxillofacial defect.
Background technology
Since Sweden professor Branemark proposed bone and integrates theory, endosteal implant was in orthopaedics, Oral and Maxillofacial Surgery, tooth-planting section, and the fields such as plastic surgery and neurosurgery obtain wide sending out and use.
Implantation body is used for repairing missing tooth, because it is beautiful and comfortable, provides masticatory force large, does not injure the advantages such as adjacent teeth, obtains the extensive recommendation of dentist and patient's favor.But for the patient of the serious atrophy of retromaxillary region alveolar bone, although can adopt all kinds of bone grafting operations, periosteum inducting osseous tissue regeneration, distraction osteogenesis, the technology such as Maxillary Sinus are recovered alveolar bone width and height, but these methods all exist recovery time long, cost is large, wound is large, has a big risk, the possible problems such as bone resorption.
if if serious the absorption occurs in the alveolar bone at missing tooth position or a side, maxillary sinus particularly, the nervus mandibularis pipe, these deathtraps for tooth implant of nasal cavity, can adopt all kinds of bone grafting operations, the periosteum inducting osseous tissue regeneration, distraction osteogenesis, the technology such as Maxillary Sinus are recovered alveolar bone width and height, perhaps nervus mandibularis migration art is to avoid nervus mandibularis, but these methods all exist recovery time long, cost is large, wound is large, have a big risk, the possible problems such as bone resorption, employing closes on bone amount abundant zone can avoid these problems as growing area, just need system of inclination implantation body at an angle of base station and implantation body this moment.
A plurality of absence of tooth, need many implantation bodys and base station to realize common path of insertion, the guarantee artificial tooth works orderly and obtains normal appearance, therefore need clinically constantly to grind the adjustment base station, but so also not necessarily can realize the common path of insertion of many implantation bodys, particularly run into the jawbone, the denture abnormal conditions that cause due to factors such as growth, wound, tumor resections, this just is difficult to obtain common path of insertion.
Cheekbone implantation body is the artificial growth body that is implanted to upper jaw bone and cheekbone.Cheekbone implantation body can be applicable to defect of maxilla, perhaps the tight re-absorbed anodontia patient of maxillary alveolar bone.Cheekbone implantation body success rate is high, and the postoperative recovery cycle is short, and retention is good, and several class methods of the relatively above-mentioned increase alveolar bone of wound are less, and spends lessly, has become abroad the tight re-absorbed anodontia patient's of maxillary alveolar bone standard care mode.Cheekbone implantation body is that diagonal is implanted in upper jaw bone and cheekbone, and is different with the tooth implant that conventional vertical alveolar ridge is implanted.Due to cheekbone implantation body's implant angle and the interlock direction inconsistent, so need the turnover of implantation body's end generation certain angle, thereby guarantee that the artificial tooth long axis direction that cheekbone implantation body repairs is oppositely consistent with interlock.And the length of cheekbone implantation body own is larger, the cheekbone implantation body relatively common dental implantation procedure and step of operation is more, difficulty is larger, the most of experience that relies on image data (CT etc.) and doctor of cheekbone implantation body's implantation, and actual implant angle can have deviation with original implant angle unavoidably.Therefore to obtain good angle more difficult for last cheekbone implantation body end.After cheekbone implantation body implants, if the removable denture reparation, when the inclined to one side palate side of cheekbone implantation body, can make the uncomfortable sensation of the removable denture patient of causing bigger than normal, bring simultaneously the problem of oral cavity cleaning, when the inclined to one side lip side of cheekbone implantation body, can cause that base is bigger than normal, lip is to a certain degree to front protrusion.After cheekbone implantation body implanted, if the fixed denture reparation, cheekbone implantation body was no matter lip side or palate side partially partially can produce the problem that artificial tooth is difficult to reach common path of insertion.Same, if cheekbone implantation body is used for repairing defect of maxilla, because cheekbone implantation body diagonal is implanted and intraoperative factors, the certain angle deviation occurs, can greatly increase the difficulty of the follow-up reparation of prosthesis and other repair structures (such as various bone lobes etc.).
About solution (comprising document and patent) and the product of cheekbone implantation body angle at the end, up to now, angle excursion 45 degree and the 55 cheekbone implantation bodys of spending that only have Nobel Biocare and Southern implants to produce.This two classes cheekbone implantation body angle is fixing, and comparatively single.If cheekbone implantation body implant surgery angle has skew or jaw face all bone forms special (such as the reasons such as growth, wound and tumor cause), existing product is difficult to satisfy clinical requirement.
Simultaneously, the cranium Maxillofacial defect that is caused by congenital development, tumor and wound is clinical common diseases, brings serious body and mind injury to patient, rebuilds to clinical repair simultaneously to bring challenges.The cranium Maxillofacial defect is ear nose eye position damaged particularly, all can bring impact for the morphology and function of patient face section.The clinical repair method can be divided into two large classes: autologous tissue and allosome tissue.Autologous tissue's method is by various tissue flap (flap, musculo cutaneous flap, the bone lobe, cartilage flap etc.) repair deficiency, except there being the damage for the district, the patient of specific group that waits for a long time in chemotherapy and year is difficult to accept, tumour patient can't check recurrence, outside the shortcomings such as operative failure that the possible factors such as postoperative infection ischemia cause, also has facial tissue's complex shape, form requires high, and the moulding difficulty such as cartilage flap, Self-tissue repair ear nose at the moment, long-term effect is as one wishes not to the utmost; Prosthesis is repaired wide accommodation, and wound is little, and operation is simple, without supplying district's damage, also has simultaneously often cleaning, the deficiencies such as periodic replacement.Two class restorative procedures can be complementary, and its scope of application is respectively arranged.
What prosthesis be used for to repair that Maxillofacial defect needs most care is the maintenance problem.Traditional maintenance method was by the prosthesis self gravitation in the past, with the atmospheric pressure after skin mucosa soft tissue absorption, spectacle-frame, biological glue, variously fell the maintenance such as recessed, but existed retention not enough, the damage that easily comes off, the defectives such as scytitis.Since Branemark created " bone integrations " theory, titanium implant is the successful Oral Repair field of being applied to.1975, at first Branemark proposed the conception of mouthful outer implantation body, and was applied to the probability in cranium jaw face field with verifying implantation body's transdermal in 1977, and designed a kind of special cranial bone implant.Hereafter, the application of implantation body outside the mouths such as cranium maxillofacial prosthesis body maintenance is flourish, the reasonable long-term maintenance that solves the prosthesises such as ocular prosthesis, adopted nose, adopted ear.
Although the prosthesis color of dependence implant retention, quality etc. are extremely similar with autologous tissue, still there are some problems in the fine problem that has solved the profile reparation aspect the implant retention prosthesis.Sum up respectively the deficiency of narration implant retention prosthesis according to ear, nose, three positions, as follows:
Ear is damaged, probably occupies 2/3 of cranium Maxillofacial defect case load.Have the following disadvantages with the implant retention prosthesis: 1. implant operation has certain risk.The implant site of the required implantation body of justice ear maintenance is temporal bone.Although temporal bone is double-deck cortical bone, its average thickness is only 4-7mm, and in boring procedure, accident penetrates the temporal bone inner panel and can cause intracranial tissue as hemorrhage in cerebral dura mater, intraparenchymal injury and sigmoid sinus etc.There are 24 can get a glimpse of still unmarred middle cranial fossa cerebral dura mater bottom the plantation nest in 214 ear field plantation patients of Tjellstrom report, have 11 hole walls impaired hemorrhage in 32 sigmoid sinus resurrectionists.2. implantation body may loose or dislocation.Except temporal bone lacks adequate thickness, outside the shorter factor of the length of implantation body own, the plantation nest is large, and the mastoid process osteoporosis is also the major reason that implantation body comes off.3. if adopted ear maintenance adopts the magnetic attachment maintenance, because each implantation body's direction almost parallel, the magnetic attachment lateral force resisting is not enough and cause Yi Eryi and slide, but magnetic attachment can keep retention 4-8 not disappear; Yi Erruo adopts the Barclip attachment maintenance, and the bar cassette can guarantee side direction and axial maintenance simultaneously, but the bar cassette is worn the abrasivus fatigue of materials owing to repeatedly getting, and loosening and Malretention can occur, and its life-span roughly about 1 year, needs periodically to replace.
After eyeball excise, rely on implantation body to implant the eye socket surrounding bone and make prosthesis obtain maintenance.But due to the restriction of socket of the eye week bone anatomical condition, at right eye socket of the eye 7-11 clock place, left eye socket of the eye 1-5 clock place, these regional bone thickness are last, can reach 6-7mm.Therefore for common tooth implant, the ocular prosthesis implant diameter is shorter, and its long-time stability can be influenced.After implantation body implants, can there be the bar cassette to adhere to maintenance, magnetic attachment maintenance, ball groove are adhered to three kinds of forms of maintenance, but because implantation body's axis centration polymerization, conventional common path of insertion is difficult to try to achieve, and magnetic base station maintenance is large to the tolerance that requires to implant axis, and because implantation body distributes rationally, can not slide, retention is good, and the patient can pluck voluntarily and wear.
After defect of nose, the first-selected position that the vertical plantation in prenasal base area is the defect of nose plantation.Prenasal base area routine is vertically implanted 1 piece in apertura piriformis lower edge rear 2 pieces of implantation bodys of vertical plantation and glabella point.If when vertically planting, implantation body vertically turns forward, may injure the Upper Anterior Teeth root of the tooth, if vertically recede, may penetrate the hard palate plate.If during vertical bone quantity not sufficient, still can consider in the laterally plantation of apertura piriformis lower edge below.Implant diameter is 5-9mm, and length is shorter, and nose implantation body mostly is parallel implantation, if adopt magnetic attachment or Barclip attachment, can run into the same problem of adopted ear maintenance.
The deficiency that the prosthesis maintenance at the positions such as above-mentioned ear nose eye occurs, domestic and foreign literature or patent there is no solution preferably.
As mentioned above, the plantation of existing tooth, cheekbone plantation and the plantation of cranium maxillofacial prosthesis body maintenance etc. exist angle and position adjustments little, use the problems such as inconvenience.
The utility model content
This utility model aims to provide a kind of Novel planting fixing device, the adjacent bone district that can utilize preferably the bone amount to enrich, freely adjust the angle of implantation body, thereby the anatomical structure that implantation body is averted danger, improve the safety that plantation is repaired, improve the implant retention ability, avoid coming off, guarantee long-time stability.
The technical solution of the utility model is: a kind of plantation fixing device, comprise implantation body, connector, base station, and there is screw thread described implantation body outside, and center upper portion has screw; Connector central authorities are porose, and grooving is arranged at top, have screw on the ear piece of grooving both sides; The projection adaptive with the connector grooving arranged at the base station bottom, has the hole on projection; Connector is connected with base station with implantation body by screw.
Further, the diameter of described implantation body is 4mm-8mm, and cylinder shape groove is arranged at implantation body top, and the boss suitable with groove arranged at the connector bottom.Can improve implantation body and connector in quality of fit and the intensity of connecting portion, improve the flexural strength of pattern of farming, relatively be fit to the larger situation of stress.
Further, the diameter of described implantation body is 3-4.5mm, and cylindrical boss is arranged at implantation body top, and the cylinder shape groove suitable with cylindrical boss arranged at the connector bottom.Can improve implantation body and connector in quality of fit and the intensity of connecting portion, improve the flexural strength of tooth pattern of farming, relatively be fit to the less situation of stress.
Further, described base station top is equipped with armature, and armature is cylindrical, and lower central has screw rod, and armature is arranged in the screw of base station center upper portion by screw rod.
Further, projection bottom surface, described base station bottom is rectangle or circle.
Preferably, projection bottom surface, described base station bottom is rectangle, and the rectangle length of side is 2-6mm, is highly 4-6mm.
Preferably, projection bottom surface, described base station bottom is circular, and diameter is 2-6mm, is highly 4-6mm.
Further, grooving is arranged at described implantation body bottom, and cutting groove depth is 0.5-1.0mm, and longitudinal length is 1.0-4.0mm, and transverse width is 2.0-3.0mm.。
Further, cavity is arranged vertically in described implantation body, be placed with medicine bag in cavity, radially be evenly distributed with pore on the plantation body wall.Can carry out administration by implantation body, be used for the antiphlogistic antibacterial of operation itself, promote simultaneously synosteosis, or be used for the treatment of the administration of Other diseases.
Further, on described base station, connecting rod is installed, the otch suitable with the base station shaped upper part arranged on connecting rod.
This utility model is simple in structure, low cost of manufacture, the maintenance intensity of load is high, have good primary stability and anti-spinfunction, can the free adjustment base station and implantation body between angle, adjusting range is large, thereby can take full advantage of the bone district that bone regeneration around implant bone amount is enriched, the zone that averts danger obtains good common path of insertion simultaneously, has good clinical value.
Description of drawings
Fig. 1 is this utility model structural representation;
Fig. 2 is implantation body's structural representation of structure shown in Figure 1;
Fig. 3 is the connector structural representation of structure shown in Figure 1;
Fig. 4 is another structural representation of this utility model;
Fig. 5 is implantation body's structural representation of structure shown in Figure 4;
Fig. 6 is the connector schematic diagram of structure shown in Figure 4;
Fig. 7 is this utility model abutment structure schematic diagram;
Fig. 8 is this utility model armature structure schematic diagram;
Fig. 9 is this utility model combinative structure schematic diagram.
In figure: 1-implantation body, 2-connector, 3-base station, 4-armature, the 5-screw rod, 6-base station top, 7-projection, 8-screw, the 9-boss, 10-screw, 11-grooving, 12-boss, the 13-groove, 14-screw, 15-hole, 16-grooving, 17-ear piece, 18-groove, 19-medicine bag, the 20-pore, 21-cavity, 22-connecting rod.
The specific embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing, this utility model is described in further detail.
As shown in the figure, this utility model plantation fixing device comprises plantation 1 body, connector 2, base station 3, and there is screw thread described implantation body 1 outside, and center upper portion has screw 14; Connector 2 central authorities are porose 15, and grooving 16 is arranged at top, have screw on the ear piece 17 on grooving 16 both sides; The projection 7 adaptive with connector grooving 16 arranged at base station 3 bottoms, has the hole on projection 7; Connector 2 is connected with implantation body 1 by screw 10, is connected with base station 3 by screw 8.
Further, the diameter of implantation body 1 is 4-8mm, and cylinder shape groove 13 is arranged at implantation body 1 top, and the boss 9 suitable with groove 13 arranged at connector 2 bottoms.Can improve implantation body and connector in quality of fit and the intensity of connecting portion, improve the flexural strength of pattern of farming, the situation that suitable stress is larger.
Further, the diameter of implantation body 1 is 3-4.5mm, the cylindrical boss 12 that implantation body 1 top has, and the cylinder shape groove 18 suitable with cylindrical boss 12 arranged at connector 1 bottom.Can improve implantation body and connector in quality of fit and the intensity of connecting portion, improve the flexural strength of tooth pattern of farming, the situation that suitable stress is less.
The convex-concave structure of implantation body and connector binding site not only can improve both quality of fits greatly, has also greatly improved bonding strength, particularly flexural strength, thereby has improved plantation precision and intensity.According to bone district situation, select applicable implantation body's size, thereby select the convex-concave structure that adapts, improve the suitability and quality of connection.
Further, base station 3 tops are equipped with armature 4, and armature 4 is cylindrical, and lower central has screw rod 5, and armature 4 is arranged in the screw of base station 3 center upper portion by screw rod 5.
Further, base station 3 bottom projection 7 bottom surfaces are rectangle or circle.
Preferably, base station 3 bottom projection 7 bottom surfaces are rectangle or circle, and during for rectangle, the rectangle length of side is 2-6mm; During for circle, diameter is 2-6mm, is highly 4-6mm; Be highly 4-6mm, top grooving 16 is interior freely rotates at connector 2 to guarantee base station 3 bottom projections 7.
Further, grooving 11 is arranged at implantation body 1 bottom, guarantees that implantation body's 1 maintenance is stable, does not rotate.
Further, grooving 11 degree of depth are 0.5-1.0mm, and longitudinal length is 1.0-4.0mm, and transverse width is 2.0-3.0mm.
Further, cavity 21 is vertically arranged in implantation body 1, be placed with medicine bag 19 in cavity 21, radially be evenly distributed with pore 20 on implantation body's 1 wall, the medicine in medicine bag 19 can discharge by pore 20.When implantation body 1 used, because art district's damage is large, itself easily was inflamed, and when because of operations such as oral cavity or jaw facial tumors excision upper jaw bone, may have tumors remaining or cancerous cell and pollute in addition.By implantation body's approach to place operative region topical, can antiphlogistic antibacterial, promote simultaneously skeletonization, pore in implantation body can make osteoblast grow into, form stronger bone-implantation body's combination interface, can give chemotherapeutics, the kill tumor cell in the time of necessary.Give slow releasing pharmaceutical in implantation body inside, can no pain, without the wound administration, do not affect patient's life and work, more easily allow patient compliance, particularly tumor patient, the patient that organ transplantation needs immunity to transplant also has patients with chronic diseases.On implantation body 1 top or bottom, spiral cover is set, the medicine that is used for cavity 21 is placed; When spiral cover is arranged on top, can also change dressings or dosing.
Further, connecting rod 22 is installed on base station 3, the otch suitable with the base station shaped upper part arranged on connecting rod 22, guarantee that connecting rod can be vertically to dislocation.
Preferably, all are threaded and are fine thread, coordinate closely, can avoid preferably the soft tissue threaded engagement face of growing into.
When carrying out the plantation of tooth or cheekbone, select suitable bone district, after forming the plantation nest, Implant 1, connector 2 is arranged in implantation body 1, with screw 10 maintenances, then screw in screw 8 in connector 2 top ear piece screw holes, in the screw hole in case soft tissue is grown on implantation body 1 and connector 2.After integrating through the bones of 3-6 months, unload connector 2 and the attachment screw 10 of implantation body 1 and the screw 8 on connector ear piece.According to the direction of required connection, that connector 2 is around implantation body's 1 axis rotation, according to the orientation determination orientation of connector 2 grooves, then fixing with screw 10.Then base station 3 bottom projections 5 are inserted in the upper grooves of connector 2, turn to proper angle, then fixing with screw 8.Generally, first use screw 10 rigid connectors 2 and implantation body 1, and then with screw 8 fixedly base station 3 and connector 2; If connector 2 has obstruction on every side just with attachment screw 8 entrances of base station 3, affect clinical manipulation, can be first well fixing afterwards the angle Selection between base station 3 and connector 2, again connector 2 is inserted implantation body together with screw 8, then rotation coupling 2, after making base station in place, trip bolt 10.
When carrying out cranium maxillofacial prosthesis body plantation maintenance, select suitable bone district, after forming the plantation nest, implantation body 1 implants, according to required direction, with screw 10 maintenance connectors 2, then use screw 8 retained abutment 3 and connector 2, then screw in armature 4 in case soft tissue growth holds implantation body 1, the female thread of the connector 2 of perhaps growing into.After integrating through the bone of 3-6 month, unload lower armature 4, delivery is made connecting rod or is adopted the finished product connecting rod, after connecting each implantation body, screws in armature, puts on prosthesis.Generally, be first to use screw 10 rigid connectors 2 and implantation body 1, then be screwed connector 2 and base station 3; If just have bone or soft tissue to hinder around screw 8 entrances, affect clinical manipulation, can be first well fixing afterwards the angle Selection between base station 3 and connector 2, screw in together implantation body with screw 10, then rotation coupling, after making base station in place, then be completely fixed screw 10 with special spanner.Then put on prosthesis, complete repair process.
Obviously, above embodiment is only to this utility model example, and is not the restriction to this utility model embodiment.To those of ordinary skill in the art, can also make other changes in different forms on the basis of the above description.Here need not also can't give all embodiments exhaustive.And these belong to apparent variation or the change that spirit of the present utility model amplified out and still are among protection domain of the present utility model.
Claims (10)
1. plant fixing device for one kind, it is characterized in that: comprise implantation body (1), connector (2), base station (3), there is screw thread described implantation body (1) outside, and center upper portion has screw (14); Connector (2) central authorities porose (15), grooving (16) is arranged at top, has screw on grooving (16) both sides ear pieces (17); The projection (7) adaptive with connector grooving (16) arranged at base station (3) bottom, and projection has the hole on (7); Connector (2) is connected 3 with implantation body (1) with base station by screw (10,8)) be connected.
2. plant according to claim 1 fixing device, it is characterized in that: the diameter of described implantation body (1) is 4mm-8mm, and cylinder shape groove (13) is arranged at implantation body (1) top, and the boss (9) suitable with groove (13) arranged at connector (2) bottom.
3. plant according to claim 1 fixing device, it is characterized in that: the diameter of described implantation body (1) is 3-4.5mm, cylindrical boss (12) is arranged at implantation body (1) top, and the cylinder shape groove (18) suitable with cylindrical boss (12) arranged at connector (2) bottom.
4. plant according to claim 1 fixing device, it is characterized in that: described base station (3) top is equipped with armature (4), armature (4) is cylindrical, and lower central has screw rod (5), and armature (4) is arranged in the screw of base station (3) center upper portion by screw rod (5).
5. plant according to claim 1 fixing device, it is characterized in that: described base station bottom projection (7) bottom surface is rectangle or circle.
6. plant according to claim 5 fixing device, it is characterized in that: described base station bottom projection (7) bottom surface is rectangle, and the rectangle length of side is 2-6mm, is highly 4-6mm.
7. plant according to claim 5 fixing device, it is characterized in that: described base station bottom projection (7) bottom surface is for circular, and diameter is 2-6mm, is highly 4-6mm.
8. plant according to claim 1 fixing device, it is characterized in that: grooving (11) is arranged at described implantation body (1) bottom, and grooving (11) degree of depth is 0.5-1.0mm, and longitudinal length is 1.0-4.0mm, and transverse width is 2.0-3.0mm.
9. plant according to claim 8 fixing device, it is characterized in that: cavity (21) is arranged in described implantation body vertically, be placed with medicine bag (19) in cavity (21), radially be evenly distributed with pore (20) on implantation body (1) wall.
10. the described plantation fixing device of according to claim 1 to 9 any one, it is characterized in that: connecting rod (22) is installed on described base station (3), and connecting rod has the otch suitable with the base station shaped upper part on (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220742665 CN202982280U (en) | 2012-12-31 | 2012-12-31 | Novel implant retention device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220742665 CN202982280U (en) | 2012-12-31 | 2012-12-31 | Novel implant retention device |
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| Publication Number | Publication Date |
|---|---|
| CN202982280U true CN202982280U (en) | 2013-06-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220742665 Expired - Fee Related CN202982280U (en) | 2012-12-31 | 2012-12-31 | Novel implant retention device |
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| CN (1) | CN202982280U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103083097A (en) * | 2012-12-31 | 2013-05-08 | 成都博硕科技有限责任公司 | Novel implant retention device |
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2012
- 2012-12-31 CN CN 201220742665 patent/CN202982280U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103083097A (en) * | 2012-12-31 | 2013-05-08 | 成都博硕科技有限责任公司 | Novel implant retention device |
| CN103083097B (en) * | 2012-12-31 | 2015-06-10 | 成都博硕科技有限责任公司 | Novel implant retention device |
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Granted publication date: 20130612 Termination date: 20201231 |
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| CF01 | Termination of patent right due to non-payment of annual fee |