CN210727937U - Ilium wing filling prosthesis - Google Patents

Abstract

The utility model relates to a medical false body technical field discloses a ilium wing fills false body. The ilium wing filling prosthesis comprises: the prosthesis comprises a prosthesis body and a bone fixing part, wherein the prosthesis body comprises a bone contact surface used for being connected with the surface of the bone defect of the ilium of the human body, a soft tissue contact surface used for being connected with the soft tissue of the human body, and a ridge surface jointed with the outer edge of the ilium ridge of the ilium of the human body; a three-dimensional porous structure layer formed on the bone-contacting surface and/or the soft tissue-contacting surface and/or the spinal surface; and the fixing piece sequentially penetrates through the ridge surface and the bone contact surface to be connected with the ilium of the human body so as to fix the prosthesis body on the ilium of the human body. The utility model discloses an ilium wing fills false body can be more good fill get the ilium after the bone.

Description

Ilium wing filling prosthesis

Technical Field

The utility model relates to a medical false body technical field especially relates to an ilium wing fills false body.

Background

The ilium is located in the central axis pelvic region of the human body, participates in the formation of the hip joint, lower limb loading and accommodation of pelvic viscera, and simultaneously forms an important body curve together with the hip, which is an important anatomical structure of human body biomechanics and aesthetics. Because the bone of the ilium is spongy bone and has a large bone quantity, part of the ilium is often taken as the material for transplanting human bones in clinical medical operations. The ilium bone grafting is widely applied to clinical application and is applied to patients with bone trauma, tumor, nonunion, joint repair and the like.

However, in the traditional clinical iliac bone extraction, no filling treatment is performed after bone extraction, or only bone cement is used for filling, which easily causes the following defects of the iliac bone after bone extraction: on one hand, if filling is not carried out, local bone depression can be caused after the ilium is subjected to bone extraction, so that skin depression on the ilium can be easily pulled, and discomfort such as local stimulation pain, compression pain and the like can be caused; on the other hand, if the filling is not carried out or only the bone cement is used for filling, the ilium on the left side and the ilium on the right side are obviously asymmetric after the ilium is taken, so that the attractiveness and the body curve are directly influenced; in addition, when the bone taking amount of the ilium is large, not only can the stability of the hip joint be affected, but also the fracture of the upper iliac crest can be caused, and the ilium forms a local weak area, so that the pelvic cavity viscera in the ilium can have hernia, and the visceral function is seriously affected.

Aiming at the defects in the prior art, a person skilled in the art needs to find an ilium wing filling prosthesis which can better fill the ilium after bone removal so as to make up the defects in the prior art.

SUMMERY OF THE UTILITY MODEL

In order to better fill the ilium after the bone is taken, the utility model provides an ilium wing filling prosthesis.

According to the utility model discloses an ilium wing fills false body includes: the prosthesis comprises a prosthesis body and a bone fixing part, wherein the prosthesis body comprises a bone contact surface used for being connected with the surface of the bone defect of the ilium of the human body, a soft tissue contact surface used for being connected with the soft tissue of the human body, and a ridge surface jointed with the outer edge of the ilium ridge of the ilium of the human body; a three-dimensional porous structure layer formed on the bone-contacting surface and/or the soft tissue-contacting surface and/or the spinal surface; and the fixing piece sequentially penetrates through the ridge surface and the bone contact surface to be connected with the ilium of the human body so as to fix the prosthesis body on the ilium of the human body.

Further, the bone contact surface comprises two opposite side planes formed on the prosthesis body and a bottom plane connecting the two side planes, the ridge surface comprises a top surface formed on the prosthesis body and opposite to the bottom plane, the soft tissue contact surface comprises two side curved surfaces connecting the bottom plane and the two side planes, at least one threaded hole extending to one side plane is formed on the top surface, the fixing piece is a screw matched with the thread of the threaded hole in a threaded mode, and a three-dimensional porous structure layer is formed on the inner surface of the threaded hole and/or the outer surface of the screw.

Further, a plurality of threaded holes respectively extending to at least one side plane are formed on the top surface, or a plurality of threaded holes respectively extending to two side planes are formed on the top surface.

Further, the threaded hole comprises a screw cap section and a screw hole section, the screw cap section is coaxially connected with the top surface and communicated with the side plane, the screw comprises a screw section matched with the threaded hole section and a screw cap accommodated in the screw cap section, the inner diameter of the screw cap section is larger than or equal to that of the threaded hole section, and the axial length of the screw section is larger than that of the threaded hole section.

Further, the screw section comprises a first connecting section and a second connecting section, wherein the first connecting section is used for being connected with the threaded hole section, the second connecting section is coaxially connected with the first connecting section and is used for being connected with the ilium of the human body, and the outer diameter of the second connecting section is smaller than that of the first connecting section.

Furthermore, the prosthesis body also comprises a baffle plate structure which is fixedly connected with the two side curved surfaces and the bottom plane at the same time, a groove for clamping the ilium of the human body is formed at the bottom end of the baffle plate structure, and a three-dimensional porous structure layer is formed on the inner surface of the groove.

Further, the three-dimensional porous structure layer comprises a plurality of silk diameters and a plurality of pores formed by mutually and alternately connecting the silk diameters, the pores are mutually communicated, the diameter of each pore ranges from 10 micrometers to 800 micrometers, the porosity of the three-dimensional porous structure layer ranges from 30% to 80%, the diameters of the pores in the three-dimensional porous structure layer formed on the bone contact surface and the three-dimensional porous structure layer formed on the inner surface of the groove are equal, and the diameter of each pore in the three-dimensional porous structure layer formed on the bone contact surface is larger than the diameter of each pore in the three-dimensional porous structure layer formed on the soft tissue contact surface.

Further, each pore in the three-dimensional porous structure layer formed on the bone contact surface and the three-dimensional porous structure layer formed on the inner surface of the groove has a diameter ranging from 100 μm to 400 μm, and a porosity of the three-dimensional porous structure layer ranges from 50% to 80%; the diameter of each pore in the three-dimensional porous structure layer formed on the bone contact surface ranges from 10 μm to 100 μm, and the porosity of the three-dimensional porous structure layer ranges from 30% to 60%.

Further, the thickness of the three-dimensional porous structure layer formed on the inner surface of the groove ranges from 1mm to 1.5mm, and the thickness of the baffle structure is greater than the thickness between the two side curved surfaces ranges from 1mm to 2 mm.

Further, the diameter of each pore of the three-dimensional porous structure layer formed on the screw hole ranges from 200 μm to 400 μm, and the porosity of the three-dimensional porous structure layer ranges from 60% to 80%, the diameter of each pore of the three-dimensional porous structure layer formed on the screw ranges from 200 μm to 600 μm, and the porosity of the three-dimensional porous structure layer ranges from 50% to 80%.

The utility model discloses an ilium wing fills false body has the benefit in several respects as follows:

1) the three-dimensional porous structure layer enables the bone contact surface to have a larger contact area with the ilium wing sclerotin, namely the outer surface of the bone contact surface obtains better bone ingrowth capability, and the ilium wing sclerotin can rapidly grow into the porous structure, so that the ilium wing filling prosthesis and the ilium wing of a human body can be stably fixed;

2) the three-dimensional porous structure layer also enables the outer surface of the soft tissue contact surface and/or the outer surface of the ridge surface to obtain better bone crawling capacity, and ilium winglets sclerotin can quickly grow into the porous structure along the outer surface of the soft tissue contact surface and/or the outer surface of the ridge surface, so that fixation of the ilium winglets filling prosthesis and the ilium of a human body is more stable;

3) the porous structure is formed on the outer surface of the soft tissue contact surface and/or the ridge surface, and the attachment points of the human body soft tissue can be reconstructed on the outer surface of the soft tissue contact surface and/or the ridge surface, so that the ilium wing filling prosthesis and the human body soft tissue can be fused more quickly, the postoperative recovery time of a patient is effectively reduced, and the postoperative recovery effect of the patient is greatly improved;

4) the prosthesis body of the ilium wing filling prosthesis is produced in a customized manner, so that the prosthesis body can be more suitable for the shape of the defect part of the ilium wing of a patient, the ilium wing of a human body can better obtain the symmetry of the ilium wings at the left side and the right side after the ilium wing filling prosthesis is filled, and the attractive effect of the ilium wing filled can be effectively improved;

5) the internal surface of screw hole and/or be formed with three-dimensional porous structure layer on the surface of screw can further improvement ilium wing and fill the fixed stability of false body to avoid the patient to take place the phenomenon of rupture because of the shearing force that the screw received and the double action of the electrochemical corrosion in the human body in the activity process, thereby effectual avoided taking off the false body because of the screw and formed the metallic foreign matter in the human body, and cause its free phenomenon in the patient body to take place, and then effectually avoided causing the damage to the patient.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

Fig. 1 is a schematic structural view of an ilium wing filling prosthesis according to the present invention, wherein the fixing member is not shown;

FIG. 2 is a side view of the iliac wing filling prosthesis shown in FIG. 1;

fig. 3 is a schematic structural view of a fixing member of an ilium wing filling prosthesis according to the present invention;

fig. 4 is an osteotomy tool for performing a bone extraction procedure on a human ilium wing.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

Fig. 1 and 2 show the structure of an iliac wing filling prosthesis 100 according to the present invention. As shown in fig. 1 and 2, the ilium wing filling prosthesis 100 includes: the prosthesis comprises a prosthesis body 1, wherein the prosthesis body 1 comprises a bone contact surface 11 used for being connected with the surface of a bone defect part of a human body ilium wing, a soft tissue contact surface 12 used for being connected with the soft tissue of the human body, and a ridge surface 13 jointed with the outer edge of an iliac crest of the human body ilium wing; a three-dimensional porous structure layer 2, the three-dimensional porous structure layer 2 being formed on the bone-contacting surface 11 and/or the soft tissue-contacting surface 12 and/or the ridge surface 13; at least one fixing member 3 (as shown in fig. 3), the fixing member 3 is connected with the ilium wing of the human body through the ridge surface 13 and the bone contact surface 11 in sequence, so as to fix the prosthesis body 1 on the ilium wing of the human body.

The utility model discloses an ilium wing fills false body 100 when using, at first adopt as shown in figure 4 cut the bone instrument and get the bone to the edge of ilium wing, get bone defect department promptly the shape of bone defect department is right the utility model discloses an ilium wing fills false body 100's false body 1 carries out the customization of customization, makes the bone contact surface 11 of false body 1 and the bone surface phase-match of this bone defect department to construct the soft tissue contact surface 12 of false body 1 into the same with the soft tissue contact surface of this bone defect department, fix false body 1 on human ilium wing through mounting 3 simultaneously, thereby accomplished the utility model discloses an ilium wing fills the filling of false body 100 to the defect department of human ilium wing.

The ilium wing filling prosthesis 100 of the present invention is formed with a three-dimensional porous structure layer 2 on the bone contact surface 11 and/or the soft tissue contact surface 12 and/or the ridge surface 13. With this arrangement, the ilium wing filling prosthesis 100 of the present invention has the following advantages:

1) the prosthesis body 1 of the ilium wing filling prosthesis 100 is produced in a customized manner, so that the prosthesis body 1 can be more suitable for the shape of the defect part of the ilium wing of a patient, the ilium wing of a human body can better obtain the symmetry of the ilium wings at the left side and the right side after being filled with the ilium wing filling prosthesis 100, and the aesthetic effect after the ilium wing is filled is effectively improved;

2) the three-dimensional porous structure layer 2 enables the bone contact surface 11 to have a larger contact area with ilium bones, namely the outer surface of the bone contact surface 11 obtains better bone ingrowth capability, and the ilium bones can rapidly grow into the porous structure, so that the ilium wing filling prosthesis 100 is favorably and stably fixed with the ilium wings of a human body;

3) the three-dimensional porous structure layer 2 also enables the outer surface of the soft tissue contact surface 12 and/or the ridge surface 13 to obtain better bone crawling capacity, and ilium pterygoid sclerotin can quickly grow into the porous structure along the outer surface of the soft tissue contact surface 12 and/or the ridge surface 13, so that the fixation of the ilium pterygoid filling prosthesis 100 and the ilium pterygoid of a human body is more stable;

4) the porous structure is formed on the outer surface of the soft tissue contact surface 12 and/or the ridge surface 13, and the attachment points of the human soft tissue can be reconstructed on the outer surface of the soft tissue contact surface 12 and/or the ridge surface 13, so that the ilium wing filling prosthesis 100 can be rapidly fused with the human soft tissue, the postoperative recovery time of the patient can be effectively shortened, and the postoperative recovery effect of the patient can be greatly improved.

In a preferred embodiment as shown in fig. 1, the bone contact surface 11 may include two opposite side plane surfaces 111 formed on the prosthesis body 1 and a bottom plane surface 112 connecting the two side plane surfaces 111, the spine surface 13 may include a top surface 131 formed on the prosthesis body 1 opposite to the bottom plane surface 112, the soft tissue contact surface 12 may include two side curved surfaces 121 (shown in fig. 2) connecting the bottom plane surface 112 and the two side plane surfaces 111, the top surface 131 may be formed with at least one screw hole 132 extending to one side plane surface 111, the fixture 3 may be a screw threadedly engaged with the screw hole 132 (shown in connection with fig. 3), and the inner surface of the screw hole 132 and/or the outer surface of the screw may be formed with the three-dimensional porous structure layer 2.

Through the arrangement, the inner surface of the threaded hole 132 and/or the outer surface of the screw (i.e. the fixing piece 3) can be formed into a porous structure, and the porous structure can increase the friction force between the screw and the threaded hole 132 on one hand, so that the screw is difficult to be removed after being matched with the threaded hole 132, and the fixing stabilizing effect of the ilium wing filling prosthesis 100 can be improved; on the other hand, the outer surface of the screw and/or the inner surface of the threaded hole 132 can obtain better bone ingrowth and bone crawling ability, so that bone can grow into the three-dimensional porous structural layer 2 rapidly, as the bone is easier to grow into the three-dimensional porous structure layer 2, the bone can provide additional fixing function to the screw, this further enhances the fixation effect of the screw, which not only further improves the stability of fixation of the ilium wing filling prosthesis 100, but also effectively avoids the problems of the prior art, the screw can be broken off due to the double functions of shearing force and electrochemical corrosion in the human body when a patient moves, thereby the effectual screw of having avoided deviating from the false body and forming the metallic foreign matter in the human body to cause its free phenomenon in patient to take place, and then the effectual damage of having avoided causing the patient.

In a preferred embodiment, the top surface 131 may be formed with a plurality of threaded holes 132 each extending to at least one of the lateral planes 111, or the top surface 131 may be formed with a plurality of threaded holes 132 each extending to both of the lateral planes 111, to further improve the stability of the fixation of the ilium winged filling prosthesis 100. Preferably, the top surface 131 may be formed with a plurality of screw holes 132 respectively extending to the two side planes 111.

In a preferred embodiment as shown in fig. 1, the threaded bore 132 may include a coaxially connected nut segment 133 in communication with the top surface 131 and a threaded bore segment 134 in communication with the side planar surface 111. in connection with fig. 3, the screw 3 may include a screw segment 31 that mates with the threaded bore segment 134 and a nut 32 that is received within the nut segment 133. Wherein, the inner diameter of the nut segment 133 may be greater than or equal to the inner diameter of the threaded hole segment 134, and the axial length of the screw segment 31 may be greater than the axial length of the threaded hole segment 134. When in use, the screw 3 firstly passes through the nut section 133 and then is in threaded connection with the threaded hole section 134 and is connected with the bone of the human body, and meanwhile, the top cap of the screw is positioned in the nut section 133. With this arrangement, on the one hand, the inner diameter of the threaded hole section 134 is smaller than the inner diameter of the nut section 133, which can limit the screwed-in position of the screw, so that the prosthesis body 1 can be effectively fixed by the screw; on the other hand, the screw cap section 133 can also accommodate the top cap 32 of the screw, thereby making the screw be located in the prosthesis body 1 completely, so that the screw inserted into the prosthesis body 1 through the ridge surface 13 does not influence the matching degree of the ridge surface 13 and the external edge of the iliac crest of the iliac wing of the human body, and further making the application of the iliac wing filling prosthesis 100 to fill the iliac wing more beautiful after filling.

Preferably, the outer surface of the nut 32 and/or the inner surface of the nut section 133 are/is formed with the three-dimensional porous structure layer 2, so as to increase the friction between the nut 32 and the nut section 133 on one hand, and thus the nut 32 and the nut section 133 are difficult to be disengaged after being matched; on the other hand, the outer surface of the nail cap 32 and/or the inner surface of the nail cap section 133 can obtain better bone ingrowth and bone crawling capacity, so that bone can grow into the three-dimensional porous structural layer 2 rapidly, and the fixation effect of the ilium wing filling prosthesis 100 is further improved.

Also preferably, the axial length of the screw section 31 may be set to: the length range of the screw hole section 134 which can extend into the ilium of the human body at least after being connected is 15mm to 25 mm. Preferably 20 mm. Through this arrangement, the screw can be made to better fix the prosthesis body 1.

In a preferred embodiment as shown in fig. 3, the screw section 31 may include a first connection section 311 for connection with the threaded hole section 134 and a second connection section 312 coaxially connected with the first connection section 311 and for connection with the iliac wing of the human body. Wherein, the outer diameter of the second connection section 312 may be smaller than the outer diameter of the first connection section 311. It should be noted that the outer diameters of the first connecting section 311 and the second connecting section 312 in the present invention should be understood to include the thickness value of the three-dimensional porous structure layer 2 formed on the outer surface thereof.

Preferably, the thickness of the three-dimensional porous structure layer 2 formed on the outer surface of the second connection section 312 may be less than the thickness of the three-dimensional porous structure layer 2 formed on the outer surface of the first connection section 311, and the thickness of the three-dimensional porous structure layer 2 formed on the screw hole 132 may be greater than the thickness of the three-dimensional porous structure layer 2 formed on the outer surface of the first connection section 311. Through this setting, can make the ability that the bone of the surface of screw crawls increase gradually from the surface of second linkage segment 312, the surface of first linkage segment 311 and the internal surface of screw hole 132 in proper order to make the surface of three all can have the coverage of better sclerotin, with the intensity and the stability of its fixed ilium wing filled prosthesis 100 of reinforcing.

Further preferably, the thickness of the three-dimensional porous structure layer 2 formed on the outer surface of the first connection section 311 may range from 1mm to 2 mm; the thickness of the three-dimensional porous structure layer 2 formed on the outer surface of the second connection section 312 ranges from 0.5mm to 1 mm; the thickness of the three-dimensional porous structure layer 2 formed on the screw hole 132 ranges from 4mm to 10 mm.

It is further preferred that the threaded hole 132 is machined by first machining the threaded hole 132 into a through hole and then tapping the through hole. Wherein, the diameter range of the through hole can be set to be 3.3mm to 6.2mm, preferably 3.3mm to 3.7mm, 4.3 mm to 4.7mm, 5mm to 5.4mm, 5.8 mm to 6.2 mm. After the through hole is machined, the machined screw is used for tapping for 1-6 times, and the specific tapping times can be determined according to the matching screwing-out torque of the specific screw and the threaded hole 132. Through this setting, can guarantee the intensity of the threaded connection of screw hole 132 and screw, and the back-out moment of torsion of screw to can improve the stability that the two are connected effectively, and then improve corresponding prosthetic fixed effect.

In a preferred embodiment as shown in fig. 1, the prosthesis body 1 may further include a baffle structure 4 fixedly connected to both the side curved surfaces 121 and the bottom plane 112, and as shown in fig. 2, a groove 41 for holding the iliac wing of the human body may be formed at the bottom end of the baffle structure 4, and a three-dimensional porous structure layer 2 may be formed on the inner surface of the groove 41. Through the arrangement, the groove 41 can be matched with the ilium of a human body, so that the ilium wing filling prosthesis 100 is prevented from rotating when being fixed through screws, and the connection stability of the ilium wing filling prosthesis 100 is improved; meanwhile, the three-dimensional porous structure layer 2 is formed on the inner surface of the groove 41, so that the bone ingrowth capacity of bone at the groove 41 can be improved, and the fixation stability of the ilium wing filling prosthesis 100 is further improved. In addition, the arrangement of the groove 41 can also effectively compensate the bone cutting amount of the connecting part of the baffle structure 4 and the ilium wing so as to reduce the bone cutting amount of the ilium wing, thereby effectively improving the strength of the human ilium wing.

It should be noted that the baffle structure 4 can be designed in a customized manner according to the appearance and the size of the ilium of the patient, so as to improve the matching degree of the baffle structure with the ilium of the human body and improve the comfort level of the human body.

It is to be noted that the three-dimensional porous structure layer 2 may include a plurality of filament diameters and a plurality of pores formed by the plurality of filament diameters being connected to each other in a staggered manner, and the pores are connected to each other, wherein the diameter of each pore may preferably range from 10 μm to 800 μm, and the porosity of the three-dimensional porous structure layer 2 may preferably range from 30% to 80%. Preferably, the diameters of the pores in the three-dimensional porous structure layer 2 formed on the bone contact surface 11 and the three-dimensional porous structure layer 2 formed on the inner surface of the recess 41 may be equal, and the diameters of the pores in the three-dimensional porous structure layer 2 formed on the bone contact surface 11 may be larger than the diameters of the pores in the three-dimensional porous structure layer 2 formed on the soft tissue contact surface 12.

Through communicating each hole that forms by the mutual staggered connection of silk footpath, and the diameter size structure inconsistent with each hole, and carry out specific setting to the diameter of hole and the scope of porosity of three-dimensional porous structure, make the structure of three-dimensional porous structure layer 2 more be close with human bone trabecula structure, the three-dimensional porous structure layer 2 that has higher porosity and connectivity can fine induction bone ingrowth, human sclerotin can grow into in the hole of three-dimensional porous structure layer 2 fast nature like this, thereby improved the ability of osteoblast's adhesion, appreciation, differentiation, promoted effectively the income and the crawl of ilium sclerotin, and then be favorable to ilium wing to fill prosthesis 100 and the sclerotin of human ilium fuse and fix at the postoperative speed, consequently improved the recovery effect of patient's postoperative effectively.

It should be noted that the cross section of each pore formed by the wire diameter is not a regular circle, but the cross sectional shape thereof may be various shapes, and in view of this, reference herein to the "diameter" of each pore should be understood to mean the diameter of a circle when the cross section of each pore is equivalent to a circle. Since the diameter of the cross section equivalent to a circle is calculated from the actual area of the cross section, the value of the diameter obtained is an accurate value.

Preferably, the three-dimensional porous structure layer 2 can be formed by 3D printing using metal powder, which can be titanium alloy, pure titanium or tantalum metal, etc. Preferably, the three-dimensional porous structure layer 2 is made of a titanium alloy material, preferably Ti6Al 4V.

It is also preferable that the diameter of each pore in the three-dimensional porous structure layer 2 formed on the bone contact surface 11 and the three-dimensional porous structure layer 2 formed on the inner surface of the groove 41 may preferably range from 100 μm to 400 μm, and the porosity of the three-dimensional porous structure layer 2 may preferably range from 50% to 80%, in order to improve the bone ingrowth capacity thereat; the diameter of each pore in the three-dimensional porous structure layer 2 formed on the soft tissue contact surface 12 and/or the ridge surface 13 may preferably range from 10 μm to 100 μm, and the porosity of the three-dimensional porous structure layer 2 may range from 30% to 60% to improve the bone crawling ability thereat.

Preferably, the thickness of the three-dimensional porous structure layer 2 formed on the inner surface of the groove 41 may preferably range from 1mm to 1.5mm to facilitate bone ingrowth on the inner surface of the groove 41; the range in which the thickness of the barrier structure 4 is greater than the thickness between the two side curved surfaces 121 may preferably be 1mm to 2mm, so that the size of the barrier structure 4 protruding out of the ilium surface of the human body is reduced to effectively reduce the foreign body sensation and improve the comfort of the human body.

Preferably, the diameter of each pore of the three-dimensional porous structure layer 2 formed on the screw hole 132 may preferably range from 200 μm to 400 μm, and the porosity of the three-dimensional porous structure layer 2 may range from 60% to 80%; the diameter of each pore in the three-dimensional porous structure layer 2 formed on the screw 4 may preferably range from 200 μm to 600 μm, and the porosity of the three-dimensional porous structure layer 2 may range from 50% to 80%.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present invention is not limited to the particular embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims (10)

1. An iliac wing filling prosthesis, comprising:

a prosthesis body comprising a bone contacting surface for interfacing with a surface of a bony defect of a human iliac wing, a soft tissue contacting surface for interfacing with a soft tissue of a human, and a spine surface for engaging an outer edge of an iliac crest of a human iliac wing;

a layer of a spatial porous structure formed on the bone-contacting surface and/or the soft tissue-contacting surface and/or the spinal surface;

and the fixing piece sequentially penetrates through the ridge surface and the bone contact surface to be connected with the ilium wing of the human body so as to fix the prosthesis body on the ilium wing of the human body.

2. The ilium wingfilling prosthesis of claim 1 wherein the bone contacting surface includes two opposing side planes formed on the prosthesis body and a bottom plane connecting the two side planes, the spine includes a top surface formed on the prosthesis body opposite the bottom plane, the soft tissue contacting surface includes two curved side surfaces connecting the bottom plane and the two side planes, the top surface has at least one threaded hole formed therein extending to one of the side planes, the fixture is a screw threadedly engaged with the threaded hole, and the solid porous structure layer is formed on an inner surface of the threaded hole and/or an outer surface of the screw.

3. The ilium wingfilling prosthesis of claim 2 wherein the top surface has a plurality of threaded holes formed therein that extend to at least one of the side planes, respectively, or the top surface has a plurality of threaded holes formed therein that extend to both of the side planes, respectively.

4. The ilium wing filling prosthesis of claim 3, wherein said threaded bore includes coaxially connected nut and nut sections in communication with said top surface and a threaded bore section in communication with said side surface, said screw including a screw section cooperating with said threaded bore section and a nut received in said nut section, wherein said nut section has an inner diameter equal to or greater than the inner diameter of said threaded bore section and the axial length of said screw section is greater than the axial length of the threaded bore section.

5. The ilium wing filling prosthesis of claim 4, wherein the screw section includes a first connecting section for connection to the threaded bore section and a second connecting section coaxially connected to the first connecting section and for connection to the ilium wing of the human body, wherein the second connecting section has an outer diameter smaller than an outer diameter of the first connecting section.

6. The ilium wing filling prosthesis of claim 4, wherein the prosthesis body further comprises a baffle structure fixedly connected with the side curved surface and the bottom plane, a groove for clamping the ilium wing of the human body is formed at the bottom end of the baffle structure, and the three-dimensional porous structure layer is formed on the inner surface of the groove.

7. The ilium wingfilling prosthesis of claim 6 wherein the three-dimensional porous structure layer includes a plurality of filament diameters and a plurality of pores formed by the plurality of filament diameters being connected to each other in a staggered manner, the pores communicating with each other, wherein the diameter of each pore is in the range of 10 μm to 800 μm, the porosity of the three-dimensional porous structure layer is in the range of 30% to 80%, the diameters of the pores in the three-dimensional porous structure layer formed on the bone contact surface and the three-dimensional porous structure layer formed on the inner surface of the recess are equal, and the diameter of each pore in the three-dimensional porous structure layer formed on the bone contact surface is larger than the diameter of each pore in the three-dimensional porous structure layer formed on the soft tissue contact surface.

8. The ilium wingfilling prosthesis of claim 7 wherein each of the pores in the three-dimensional porous structure layer formed on the bone-contacting surface and the three-dimensional porous structure layer formed on the inner surface of the groove has a diameter ranging from 100 μm to 400 μm and a porosity ranging from 50% to 80%; the diameter of each pore in the three-dimensional porous structure layer formed on the bone contact surface ranges from 10 μm to 100 μm, and the porosity of the three-dimensional porous structure layer ranges from 30% to 60%.

9. The ilium wingfilling prosthesis of claim 6 wherein the thickness of the three-dimensional porous structure layer formed on the inner surface of the groove ranges from 1mm to 1.5mm and the thickness of the baffle structure is greater than the thickness between the two side curved surfaces ranges from 1mm to 2 mm.

10. The ilium wingfilling prosthesis of claim 6 wherein the diameter of each pore in the three-dimensional porous structure layer formed in the threaded hole ranges from 200 μm to 400 μm and the porosity of the three-dimensional porous structure layer ranges from 60% to 80%, the diameter of each pore of the three-dimensional porous structure layer formed on the screw ranges from 200 μm to 600 μm, and the porosity of the three-dimensional porous structure layer ranges from 50% to 80%.

Images