CN203852450U - Bone loss repair device - Google Patents

Abstract

The utility model provides a bone loss repair device. The device comprises a bone filling cavity; the bone filling cavity is matched with a lost bone in shape and is hollow. According to the bone loss repair device provided by the utility model, because of the hollow bone filling cavity, autogenous, exogenous or artificial bone blocks, bone granules and even bone powder, which are prepared in advance, are filled in the bone filling cavity; moreover, because the bone filling cavity is hollow, the filled bone facilitates creeping and growing of bone cells in a later stage after initial fixation, a soft tissue for coating the bone is normally attached, and the matching of a prosthesis and a physiological bone is improved integrally.

Description

Bone lacks prosthetic device

Technical field

This utility model relates to medical science prosthesis field, especially, relates to a kind of bone lacks prosthetic device.

Background technology

Upper and lower jawbone is one of skeleton that in whole body skeleton, form is the most complicated.Jaw defect is the damaged illness of modal bone, can be caused by various diseases, as jaw facial cyst and tumor, acute and chronic osteomyelitis of jaws, osteoradionecrosis, the serious diseases such as wound, infection and congenital heredity can cause partly or entirely excision or lose of mandibular bone, bone structure seriality is interrupted, and damaged with adjacent soft tissue how.Jaw defect have a strong impact on patient language, breathe, chew, swallow and the physiological function such as face appearance, make patient's quality of life degradation.The reparation of jaw defect is to be subject to showing great attention to medical science problem always.Traditional restorative procedure is mainly that bone is transplanted, and comprises autologous bone transplanting, homogeneous allogenic bone transplantation and artificial bone succedaneum.Autologous bone transplanting is because it is without rejection, danger without pathophoresis, success rate is high and become a lot of patients' first-selection, but be subject to source restriction and cause autologous damage, simultaneously still there is certain difficulty maintaining aspect the symmetry of patient's face, moulding and appearance recovery effects, therefore still fail to make to feel in the industry completely desirable and satisfied.

Also there is in recent years the metal of employing Rapid Manufacturing Technology to set up the three-dimensional skeleton model of defect and the method to the direct machine-shaping prosthesis of metal material by CNC Machine Tools such as machining centers by CT scan data, solved to a certain extent initial stage fixation problem, but, As time goes on, the prosthesis of molding and original effectively combination between adjacent host's physiology bone, also cannot realize the connection of blood tissues; In addition, the soft tissue of prosthese outer cladding, as gingiva tissue etc., still undesirable with the adhesion effect of prosthese.

Utility model content

This utility model object is to provide a kind of bone lacks prosthetic device, cannot be in conjunction with, soft tissue and the poor technical problem of prosthesis adhesion effect to solve between prosthesis of the prior art and original osseous tissue.

For achieving the above object, this utility model provides a kind of bone lacks prosthetic device, comprising: sclerotin filled chamber, the shape of the skeleton of shape and disappearance matches and is Openworks shape.

Further, sclerotin filled chamber comprises: one or more combinations end, there is through-hole structure, and sclerotin filled chamber is by connecting in conjunction with end and host's physiology bone photo; Dowel, is connected between the adjacent side of adjacent combination end to form sclerotin filled chamber.

Further, dowel comprise many skeletons along disappearance move towards extend and with the longitudinal dowel being connected in conjunction with end.

Further, longitudinally dowel comprises the longitudinal dowel of master that extends to bear the mechanics function of skeleton filled chamber along the structural mechanics conducting path of the skeleton of disappearance.

Further, longitudinally dowel also comprises the assistant longitudinal dowel extending along the structural mechanics conducting path of the skeleton lacking, and the cross-sectional area of assistant longitudinal dowel is less than the cross-sectional area of main longitudinal dowel.

Further, dowel also comprises and is connected between longitudinal dowel jointly to form the horizontal dowel of cell structure with longitudinal dowel.

Further, longitudinally between dowel, be provided with limit net.

Further, in conjunction with between end and host's physiology bone, by connecting portion, be connected.

Further, connecting portion is the connection lug being arranged in conjunction with the outer ledge of end, the first end that connects lug with in conjunction with end, be connected, the second end of connection lug is connected with the outer surface of host's physiology bone.

Further, connecting portion is the artificial joint structure being connected with host's physiology bone.

Further, in conjunction with end, dowel and the connecting portion structure that is formed in one.

Further, the bone lacks prosthetic device that this utility model provides, also comprises: bone surface prosthese fixed pedestal, is arranged in sclerotin filled chamber and has the link being connected with bone surface prosthese.

Further, bone surface prosthese fixed pedestal is Dental Implant fixed pedestal; The shape of the shape of sclerotin filled chamber and the jawbone of disappearance matches.

Further, bone surface prosthese fixed pedestal has through-hole structure.

The utlity model has following beneficial effect:

This utility model provides a kind of bone lacks prosthetic device, and this device comprises sclerotin filled chamber, and the shape of the shape of sclerotin filled chamber and the skeleton of disappearance matches and is Openworks shape.The bone lacks prosthetic device that this utility model provides, owing to thering is the sclerotin filled chamber of hollow out, can by preprepared autologous, allosome or artificial bone piece, osseous granules even bone powder be filled in sclerotin filled chamber, and, sclerotin filled chamber is Openworks shape, and after fixing in the early stage, the sclerotin of filling is conducive to creeping of later stage osteocyte and grows into, and then realize normally adhering to of outside coated soft tissue, improved on the whole mating of prosthese and physiology skeleton.

Except object described above, feature and advantage, this utility model also has other object, feature and advantage.Below with reference to figure, this utility model is described in further detail.

Accompanying drawing explanation

The accompanying drawing that forms the application's a part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model is used for explaining this utility model, does not form improper restriction of the present utility model.In the accompanying drawings:

Fig. 1 be longitudinal dowel of this utility model preferred embodiment with in conjunction with the syndeton schematic diagram of end;

Fig. 2 is longitudinal dowel of this utility model preferred embodiment and the syndeton schematic diagram of horizontal dowel;

Fig. 3 is longitudinal dowel of this utility model preferred embodiment and the syndeton schematic diagram of limit net;

Fig. 4 is the structural representation of the skeleton filled chamber of the connecting portion of this utility model preferred embodiment situation that is artificial articulation structure;

Fig. 5 is the mounting structure schematic diagram of the Dental Implant pedestal of this utility model preferred embodiment; And

Fig. 6 is the schematic diagram that utilizes bone lacks prosthetic device that this utility model provides to repair upper jaw bone.

The specific embodiment

Below in conjunction with accompanying drawing, embodiment of the present utility model is elaborated, but the multitude of different ways that this utility model can be defined by the claims and cover is implemented.

As depicted in figs. 1 and 2, this utility model provides a kind of bone lacks prosthetic device, and this prosthetic device comprises: sclerotin filled chamber 10, the shape of the shape of this sclerotin filled chamber 10 and the skeleton of disappearance matches and is Openworks shape.The prosthetic device that this utility model provides, owing to having comprised the sclerotin filled chamber 10 that is hollow out state, the shape of this sclerotin filled chamber 10 can be similar as much as possible to the shape of the skeleton of disappearance, in operation, can be after this sclerotin filled chamber 10 be installed to physiology bone lacks position,, allosome autologous to filling in cavity or there is bioactive bone piece, osseous granules, through test, find, after the sclerotin filled chamber 10 of having filled sclerotin is implanted to host's physiology bone 20, the occupy-place of skeleton defect and initial fixing all performance well; And, due to sclerotin filled chamber 10, be hollow and become Openworks shape, for blood circulation provides good passage and space.

The preferential medical metal that adopts of sclerotin filled chamber 10, comprises that the materials such as medical stainless steel, titanium and titanium-base alloy, cobalt-base alloys make, and this class medical metal material has all confirmed through clinical practice for many years the biology performance that it is good.And the elastic characteristic that the sclerotin filled chamber 10 being made into has and physiology bone approach, be convenient in the future to generate to form the intactly newborn skeleton of similar armored concrete form in inside and the osteoblastic differentiation of outer surface shape of sclerotin filled chamber 10.

Sclerotin filled chamber 10 comprises one or more combinations end 11, each has honeycomb fashion through-hole structure in conjunction with end 11, that is to say, each is in conjunction with being covered with a lot of through holes on end 11, such design, be conducive to be arranged in conjunction with the osteocyte of host's physiology bone 20 of a side of end 11 through hole of growing into of creeping, and fill with opposite side osteocyte that creeping of sclerotin grow into and combine and form complete skeleton.In order to make can to fit better with the section of host's physiology bone 20 in conjunction with end 11, guarantee the connection of the section part of skeleton, in conjunction with the shape of the shape of end 11 and the section of host's physiology bone 20, match.And, between sclerotin filled chamber 10 and host's physiology bone 20 by being connected in conjunction with end 11.In addition, sclerotin filled chamber 10 also comprises dowel, and this dowel is connected between the adjacent edge of adjacent combination end 11 to form sclerotin filled chamber 10.Once human skeleton lacks to some extent, conventionally all can form more than one section, so, conventionally just need more than one combination end 11.Certainly, also may also have individual cases to need the situation of more combinations end 11, as at the bottom of skull, upper tooth jaw district, anterior nasal spine, eye socket lower edge, socket of the eye, zygomatic process etc.

Dowel comprise many skeletons along disappearance move towards extend and with the longitudinal dowel being connected in conjunction with end 11.At needs, more than two in conjunction with end 11 in the situation that, each is exactly adjacent one another are in conjunction with end 11, so, between the outer ledge of the relative end face of adjacent combination end 11, by longitudinal dowel, is connected.

Above-mentioned longitudinal dowel comprises the longitudinal dowel 13a of master that extends to bear the mechanics function of skeleton filled chamber 10 along the structural mechanics conducting path of skeleton of disappearance.In addition, longitudinal dowel also comprises assisting bears mechanics function, and is positioned at the assistant longitudinal dowel 13c of main longitudinal dowel 13a both sides.Because needs bear larger power, main longitudinal dowel 13a is relatively thick, and assistant longitudinal dowel 13c is relatively thin.And, be no matter main longitudinal dowel 13a or assistant longitudinal dowel 13c, the shape of both cross sections can have various ways, a kind of as in circle, ellipse, rectangle, I-shaped, cross, polygon or U-shaped.Longitudinally dowel is similar to the framework of sclerotin filled chamber 10, bears the stressed of cavity.

For the sclerotin of filling is retrained, dowel also comprise be connected between longitudinal dowel with and longitudinal dowel between form the horizontal dowel 13e of cell structure.Also horizontal dowel 13e can be interpreted as to the rib of human body, so also horizontal dowel 13e can be called to limit rib, between limit rib and each longitudinal dowel, form cell structure, this cell structure has and holds, retrains implanted bone grafting bone piece, the effect of bone grafting granule.The trend of dowel arranges a limit rib every a segment distance along the longitudinal, and the quantity of limit rib needs to determine according to affected part, but has one at least.Because longitudinally dowel conventionally can be larger with the hole of the cell structure that laterally dowel forms, be more suitable in the larger osseous granules of volume is filled in cavity.In fact, the surface of dowel is rough, is formed with protruding part, so that the adhering to of bone cells.

As shown in Figure 3, in order to be used in the sclerotin of the filling of variform, can also longitudinally between dowel, be provided with limit net 15.This limit net 15 consists of net metal, and longitudinal dowel is connected to become to the integral body of approximate basket, and its profile boundaries of the integral body of this approximate basket is approximate but be not more than the outer surface profile of former normal physiological skeleton (skeleton of disappearance); And the integral body of this approximate basket has holds, retrains implanted bone grafting bone piece, the effect of bone grafting granule.Limit net can be single layer structure, can be also multiple structure.When limit net is multiple structure, the mesh of every layer of limit net is interconnected, and the aperture of mesh can be arranged between 0.1mm to 5mm, and such being designed with is beneficial to the little sclerotin granule of volume is retrained and fixed.And mesh is conducive to the growth of creeping of sclerotin cell.

In order to realize being connected with preliminary fixing of sclerotin filled chamber 10 and host's physiology bone 20, in conjunction with between end 11 and host's physiology bone 20, by connecting portion, be connected.Owing to having through-hole structure in conjunction with end 11, this through-hole structure can adopt cellular structure, and such being designed with is beneficial to creeping of sclerotin cell and grows, thereby the bone at a specified future date of realizing after Operation merges fixing.

Connecting portion is the connection lug 17 being arranged in conjunction with the outer ledge of end 11, the first end that connects lug 17 with in conjunction with end 11, be connected, the second end of connection lug 17 is connected with the outer surface of host's physiology bone 20.

Connect between the second end of lug 17 and the outer surface of host's physiology bone 20 by running through and be connected lug 17 and be connected with the screw of the outer surface of host's physiology bone 20.In fact, in conjunction with can the be processed as one structure of molding of end 11, dowel and connecting portion.

As shown in Figure 4, in actual operation, the situation that also may occur one end disappearance of skeleton, the mandibular bone of human body for example, likely there is the situation of the prominent disappearance of physiology condyle, so, for whole by forming between the mandibular bone of disappearance and the physiology skeleton that retains, also need manually to produce artificial condyle prominent, now, one end of produced sclerotin filled chamber 10 form match with the section configuration of mandible section shape be combined end, and the other end of sclerotin filled chamber 10 just needs to form the coronoid process structure that can dash forward and match with artificial condyle.In such cases, connecting portion is no longer just to connect lug 17, but artificial joint structure 19 (artificial condyle is prominent).Condyle lug structure need to carry out surface finish to substitute the easily damaged prominent function of physiology condyle.

Correspondingly, coronoid process structure 14 is just equivalent in conjunction with end, and just combination end is in such cases three-dimensional skeleton shape.In order to promote the growth of skeletal tissue and adhering to of soft tissue, coronoid process structure and artificial condyle are prominent can be made into cellular through-hole structure.The aperture of the through hole of coronoid process structure is 0.1mm to 3mm, and this through-hole structure is in order to provide the attachment region of part jaw face motion muscle and ligament so that following associated soft tissue can be grown into fixing.The three-dimensional communication hole of honeycomb fashion provides physiology tendon and soft tissue cells to hold to grow into the motion to the relevant muscle group of following jaw face provides reliable impetus.

As shown in Figure 5, in addition, the bone lacks prosthetic device that this utility model provides, also comprises: bone surface prosthese fixed pedestal 40, this bone surface prosthese fixed pedestal 40 is arranged in sclerotin filled chamber 10 and has the link being connected with bone surface prosthese.As a kind of concrete structure, this bone surface prosthese fixed pedestal 40 is Dental Implant fixed pedestal; The shape of the shape of sclerotin filled chamber 10 and the jawbone of disappearance matches.On Dental Implant fixed pedestal, can offer Dental Implant pedestal hole 40a to facilitate following implantation base station 43 and Dental Implant corona 45 is installed, for realize the function of physiology tooth by Dental Implant.Dental Implant fixed pedestal is connected to maintain early stage stable of Dental Implant fixed pedestal after implant surgery with assistant longitudinal dowel 13c.Specifically, between Dental Implant fixed pedestal and main longitudinal dowel 13a and assistant longitudinal dowel 13c, with one or more support bar 41, be connected to maintain early stage the stablizing of Dental Implant pedestal after implant surgery.

For Dental Implant fixed pedestal can be combined with the sclerotin in sclerotin filled chamber 10 better, bone surface prosthese fixed pedestal 40 has cellular through-hole structure.Specific to the application, Dental Implant pedestal outer surface is provided with microcellular structure, this microcellular structure is to comprise that a plurality of micropores that are interconnected are to form cellular through-hole structure, and, the aperture of this microcellular structure hole is 0.1mm to 2mm, such aperture can guarantee the intensity of bone surface prosthese fixed pedestal 40, can promote again the growth combination of sclerotin cell.

The bone lacks prosthetic device that this utility model provides is applicable to the reparation of the skeleton disappearance at each position, is particularly useful for the reparation of the upper and lower jawbone disappearance of human body.The shape of the sclerotin filled chamber 10 of bone lacks prosthetic device can design according to concrete needs, can be used at the bottom of repairing physiology upper tooth jaw district, anterior nasal spine, eye socket lower edge, socket of the eye, a plurality of structures of work in zygomatic process structure partly or entirely, and lower tooth jaw district, lower jaw member, angle of mandible, mandibular ramus, coronoid process, condyle prominent in one or more structures partly or entirely.It is highly similar in form that the formed jawbone prosthese of bone lacks prosthetic device that this utility model provides has the physiology bone lacking to patient, autologous in the interior filling of skeleton filled chamber 10 in art, allosome or there is bioactive bone piece, osseous granules, good in the occupy-place of skeleton defect after implantation, be initially fixed well; The hollow and the gap that due to skeleton filled chamber 10, self have supply to provide better channels and space to blood, and the elastic characteristic that skeleton filled chamber 10 has and physiology bone approach, be convenient in the future to generate to form the intactly newborn jawbone body of similar armored concrete form in inside and the osteoblastic differentiation of outer surface shape of skeleton filled chamber 10; The microcellular structure that Dental Implant base station base outer surface arranges simultaneously also will be stablized to obtain the long term of Dental Implant in later stage and the warm interface of newborn jawbone bodily form skeletonization.

It is example that the jawbone of take below disappearance is repaired, the manufacture method of the bone lacks prosthetic device that this utility model provides is described: the position to be repaired that first need fill up according to patient and the scan-datas such as CT, MRI of Peripheral Bone tissue thereof, by the reverse affected part threedimensional model of setting up of computer software, bone defect is carried out three-dimensional reconstruction and designs according to this meeting the jawbone dummy profile three-D profile that individual dissection is learned form completely, in the space of jawbone dummy profile three-D profile with interior design skeleton filled chamber 10, according to the intensity of skeleton filled chamber 10, need to design main longitudinal dowel 13a and assistant longitudinal dowel 13c, laterally dowel 13e is relevant with the filling material of bone of expection use to the selection of limit net 15, when using more complete bone piece or larger-diameter particulate cancellous bone as filling object, can adopt horizontal dowel 13e (limit rib) design, when the particulate cancellous bone that uses small diameter can adopt limit net 15 during as implant.

Applied metal rapid shaping technique is electron beam melting forming technique (Electron Beam Melting for example, EBM) or Selective Laser Sintering (Selected Laser Sintering, SLS) under computer control, rapid processing becomes the blank of the point-device jawbone filled chamber of physical dimension, then becomes the directly product of implant into body through necessary following process such as boring, tapping, surface treatment, assembling etc.

Utilize jawbone filled chamber that bone lacks prosthetic device that this utility model provides carries out jawbone reparation formation as shown in Figure 6, the covering scope of skeleton filled chamber can comprise upper tooth jaw district, expands to anterior nasal spine, eye socket lower edge, zygomatic process if desired isostructural partly or entirely by the damaged situation of bone.In Fig. 6, it is the skeleton filled chamber 10 for the situation design of Maxillary defect, can find out, the shape of the combination end 11 of this skeleton filled chamber 10 is designed to the shape that the section with upper jaw bone matches, and the shape of connecting portion is also correspondingly designed to columniform structure.

The process of utilizing bone lacks prosthetic device that this utility model provides to repair jawbone is as follows:

First, preoperatively patient's jaw face is carried out to CT, MRI check to obtain affected part data and set up threedimensional model, when a side shortage of data, can use mirror method to copy side seam Data flipping, by computer aided design software, design the skeleton filled chamber that can recover the desirable appearance form of patient;

Second, applied metal rapid shaping technique is as electron beam melting forming technique (Electron Beam Melting, EBM) or Selective Laser Sintering (Selected Laser Sintering, SLS) under computer control, rapid processing becomes the point-device keel type jawbone of physical dimension recovery support blank, then becomes the directly product of implant into body through necessary following process such as boring, tapping, surface treatment, assembling etc.;

The 3rd, carry out the implant surgery of skeleton filled chamber, first carry out the filling of bone grafting bone piece, bone grafting granule, then according to pre-operative surgical planning, implant corresponding precalculated position, the adjacent physiology osseous tissue faying face being connected with wish in conjunction with end is fitted tightly, by using bone screw that skeleton filled chamber and adjacent physiology bone are fixed, also can use conventional jaw face fixation steel plate that skeleton filled chamber and adjacent physiology bone are fixed;

The 4th, close wound, conventional post surgery treatment and nursing.

The through-hole structure of the combination end of this skeleton filled chamber and the laminating of adjacent host's physiology bone sclerotin close contact after skeleton filled chamber is implanted, following osteocyte forms the through-hole structure on the skeleton filled chamber surface of growing in good bone and merges; In addition, the through-hole structure of Dental Implant pedestal outer surface also will merge one with newly-generated osteocyte, for the later stage is implanted base station and corona lays the first stone.

Utilize the method for the rapid shaping technique processing skeleton filled chambers such as laser sintered or high-power electron beam melting as follows:

A. by CT or MRI scanning, obtain the tomoscan data of patient's jaw face, and according to tomoscan data inverse to the threedimensional model of setting up skeleton filled chamber;

B. use professional software to carry out layering to the skeleton filled chamber three-dimensional data model of design-build in computer, to obtain the outline data of a series of monolayer slices;

C. to laser or the above-mentioned serial synusia data of high-power electron beam rapid forming equipment input;

The medical metal powder of floor height respective thickness while D. laying with aforementioned three-dimensional data model layering in laser or high-power electron beam rapid forming equipment processing cabin;

E. by computer controlled controlling laser beam or high-power electron beam, medical metal powder is scanned and selectively fusing;

F. repeat aforementioned laying powder, scanning fusing step so that the mutual clinkering of the material of each layer of selected fusing becomes whole;

G. complete the parts that the powder of removing not melting after the melting process of whole aspects can obtain the skeleton filled chamber of required shape and structure;

H. owing to the structures such as needed entity, through hole having been designed in the lump in data file when building skeleton filled chamber parts three-dimensional data model, therefore above-mentioned various structures complete manufacture by disposable in laser sintered or high-power electron beam melting process.

The foregoing is only preferred embodiment of the present utility model, be not limited to this utility model, for a person skilled in the art, this utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.

Claims (13)

1. a bone lacks prosthetic device, is characterized in that, comprising:

Sclerotin filled chamber (10), the shape of the skeleton of shape and disappearance matches and is Openworks shape;

Described sclerotin filled chamber (10) comprising: one or more combinations end (11), there is through-hole structure, and described sclerotin filled chamber (10) is connected with host's physiology bone (20) by described combination end (11); Dowel, is connected between the adjacent side of adjacent described combination end (11) to form described sclerotin filled chamber (10).

2. bone lacks prosthetic device according to claim 1, is characterized in that, described dowel comprises the longitudinal dowel that moves towards extension and be connected with described combination end (11) of many skeletons along described disappearance.

3. bone lacks prosthetic device according to claim 2, is characterized in that,

Described longitudinal dowel comprises the longitudinal dowel of master (13a) that extends to bear the mechanics function of skeleton filled chamber (10) along the structural mechanics conducting path of the skeleton of described disappearance.

4. bone lacks prosthetic device according to claim 3, is characterized in that,

Described longitudinal dowel also comprises the assistant longitudinal dowel (13c) extending along the structural mechanics conducting path of the skeleton of described disappearance, and the cross-sectional area of described assistant longitudinal dowel (13c) is less than the cross-sectional area of the longitudinal dowel of described master (13a).

5. bone lacks prosthetic device according to claim 2, is characterized in that, described dowel also comprises and is connected between described longitudinal dowel jointly to form the horizontal dowel (13e) of cell structure with described longitudinal dowel.

6. bone lacks prosthetic device according to claim 2, is characterized in that,

Between described longitudinal dowel, be provided with limit net (15).

7. bone lacks prosthetic device according to claim 1, is characterized in that,

Between described combination end (11) and described host's physiology bone (20), by connecting portion, be connected.

8. bone lacks prosthetic device according to claim 7, is characterized in that,

Described connecting portion is for being arranged on the connection lug (17) of the outer ledge of described combination end (11), the first end of described connection lug (17) is connected with described combination end (11), and the second end of described connection lug (17) is connected with the outer surface of described host's physiology bone (20).

9. bone lacks prosthetic device according to claim 7, is characterized in that,

Described connecting portion is the artificial joint structure (19) being connected with described host's physiology bone (20).

10. bone lacks prosthetic device according to claim 7, is characterized in that,

Described combination end (11), described dowel and the described connecting portion structure that is formed in one.

11. bone lacks prosthetic devices according to claim 1, is characterized in that, also comprise:

Bone surface prosthese fixed pedestal (40), is arranged in described sclerotin filled chamber (10) and has the link being connected with bone surface prosthese.

12. bone lacks prosthetic devices according to claim 11, is characterized in that,

Described bone surface prosthese fixed pedestal (40) is Dental Implant fixed pedestal;

The shape of the shape of described sclerotin filled chamber (10) and the jawbone of disappearance matches.

13. bone lacks prosthetic devices according to claim 11, is characterized in that,

Described bone surface prosthese fixed pedestal (40) has through-hole structure.