TWI414284B - Bone implant - Google Patents

Abstract

The invention relates to a bone implant. The bone implant belongs to biological implants or fixed objects which can be inserted into beings bones as implants. More particularly, the invention relates to smooth and rough surfaces of the bone implant. The smooth surface can connect units, and the rough surface can raise the friction of combinations that allow the bone implant units to combine stably and upgrade the stability of implants in bones.

Description

Bone implant

The present invention is a bone implant that is an implant or fixation object for implantation into an implant of a biological bone. The bone implant of the present invention particularly refers to a bone implant having a component interface of a smooth treated surface and a rough treated surface.

With the development of science and technology, medical technology has also prospered. Even if the patient is damaged by the original organism, the function of the original organism can be replaced by a replacement technique of artificial parts. Gospel, however, implants used in previous techniques are often not well designed.

As shown in Fig. 6, a conventional three-piece bone implant 8 is shown, with an implant base 810 underneath, a connector 820 in the middle, and an auxiliary connector 830 on top. The auxiliary connector 830 passes through the connector 820 and is inserted into the interior of the implant base 810. The front end portion of the auxiliary connecting member 830 is provided with an external thread, and the inside of the implanting base 810 is internally threaded, thereby locking the auxiliary connecting member 830, the connecting body 820 and the implanting base 810 together.

7 is a schematic cross-sectional view showing the exploded state of the three-piece bone implant of FIG. 6. The joint surface of the implant base 810 and the connecting body 820 is not a relatively stable contact surface, and the connecting body 820 and the auxiliary connecting member 830 are not The stable contact surface has more bonding surfaces and can not be closely adhered. After a long time of use, the bacteria are more likely to invade the bone implant and spoil and deform, and the implanted base 810 and the connecting body 820 and the connecting body 820 are connected. There is no relatively stable joint surface with the auxiliary connecting member 830, and it is easy to slide and loose after a long time of use, and the stability is not good.

As shown in Fig. 8, a two-piece bone implant 7 is shown, with an implant base 710 underneath and a connector 720 on top. The two-piece bone implant 7 still has to be inserted into the interior of the implant base 710 by passing an auxiliary fastener (not shown) through the connector 720. The front end portion of the auxiliary fixing member is provided with an external thread (not shown), and the inside of the implant base 710 is internally threaded (not shown), whereby the auxiliary fixing member, the connecting body 720 and the implanting base 710 are provided. Lock together. The bonding surface of the implanting substrate 710 and the connecting body 720 is not a relatively stable contact surface, and the bonding surface cannot be closely adhered. After a long period of use, the bacteria are easily invaded into the bone implant and spoiled and deformed, and the substrate 710 is implanted. There is no relatively stable joint surface with the connecting body 720, and it is easy to slide and loose after a long time of use, and the stability is not good.

As shown in FIG. 9, another currently used bone implant 9 is shown, which is implanted between the base 910 and the connecting body 920. Although an adhesive 940 is additionally applied, it is still caused by prolonged use. Sliding and loose, the bone implant 9 components are still unable to effectively bind tightly.

From the shortcomings of the above-mentioned prior art, it can be known that the "joining surface" between the bone implants has many spaces to be improved, and the problems faced by the above-mentioned prior art are solved by years of experience in research and development and manufacturing of related industries. After discussing and researching, and actively looking for a solution, after many tests and improvements, finally created a bone implant that can actually improve the above defects.

1. A conventional bone implant in which the connection state between members is tightly connected, and after a long period of use, bacteria are invaded into the bone implant and spoiled and deformed, resulting in clinical failure of the artificial bone implant.

2. The conventional bone implant has no relatively stable joint surface between the members, and is easy to slide and loose after a long period of use, and has the disadvantage of poor stability.

It can be seen from the above that "having a tight and stable bonding surface" is very helpful for preventing the bacteria from invading the bone implant between the bone implant members and causing a stable combination, that is, the focus of the present invention. .

A bone implant is provided, comprising: an implant base and a joint; at least one of the members has a smooth treated surface and a roughened surface, and the smoothed surface of the joint and the smooth processing of the implanted substrate The facet has at least one annular contact surface that conforms to each other such that the connector is connectable to the implant base, and the smoothed surface of the connector forms at least a circular tight connection with the smoothed surface of the implanted substrate Joint surface. The member has at least one roughened surface having a frictional force for enhancing bonding and the bonded surface of the roughened surface to be bonded to the other member.

Provides a bone implant with the following benefits:

1. The skeletal implant component has a smooth treatment surface that allows the components to be connected, preventing bacteria from invading the bone implant, and preventing the bone implant from spoiling and deforming, thereby causing clinical failure of the artificial bone implant.

2. The member of the bone implant has a rough treatment surface to improve the friction of the joint, so that the bone implant member can be firmly combined. In addition, the bone is implanted due to the rough treatment surface on the surface of the bone implant member. After implantation, the object will not slide and loose after a long period of use, which greatly improves the stability of the implant in the bone.

The preferred embodiments of the present invention are described in detail with reference to the accompanying drawings.

In order to fully understand the effects of the present invention, the structure and function characteristics of the present invention are described in detail below with reference to the drawings and the drawings: Please refer to the first aspect of the present invention. The embodiment is shown in Figures 1 (A) and (B) for implanting a bone implant 1 of a biological skeleton (for example, a two-piece bone implant), comprising: an implant base 10 having one end The implanted end 101 is for implantation in the bio-bone 5, the other end is the connecting end 102, the connecting end 102 has a smoothing surface 103, and a connecting body 20 is connected to the implanting base 10. In the present embodiment, the bone implant 1 can be a three-piece bone implant by passing an auxiliary fixing member (not shown) through the connecting body 20 and inserting into the interior of the implanting base 10. Not limited to this. The front end portion of the auxiliary fixing member may be provided with an external thread (not shown), and the inside of the implant base 10 may be provided with an internal thread (not shown), whereby the auxiliary fixing member, the connecting body 20 and the implant are implanted. The base body 10 is locked together, and the present invention does not limit the locking method. The connecting body 20 has a smoothing surface 201 for attaching to the smoothing surface 103 of the implanting substrate 10, and the smoothing surface 201 of the connecting body 20 and the smoothing surface 103 of the implanting substrate 10 have at least one shape. An annular contact surface that conforms to each other such that the connector 20 is connectable to the implant base 10, and the smoothed surface 201 of the connector 20 is coupled to the smoothed surface 103 of the implant base 10 to form at least one ring tightly The connecting body 20 has a rough processing surface 202 for connecting to the connecting end 102 of the implanting base 10 to improve the friction of the bonding, and the rough processing surface 202 of the connecting body 20 is sandblasted. Etching, rolling, forging, embossing, embossing, hobbing or printing, the smoothing surface 201 of the connecting body 20 is disposed on the outer side of the roughened surface 202, thereby forming a tight The inside of the joint to be protected prevents the bacteria from intruding into the interior of the bone implant 1 to be protected, and the bone implant 1 is prevented from being spoiled and deformed. The roughened surface 202 of the connector 20 shown in Figs. 1(A) and (B) is shown. Is a ring surface, and the second implementation For example, as shown in FIG. 2, the roughened surface 202 of the connecting body 20 has a localized surface.

The third embodiment, as shown in FIG. 3(A), is a bone implant 1 for implanting into a biological skeleton, comprising: a connecting body 20 having a smooth processing surface 201; and an implanting substrate 10, One end is an implanted end 101 for implantation in a biological skeleton, and the other end is a connecting end 102. The connecting end 102 is connected to the connecting body 20, and has a smooth processing surface 103 for connecting to the connection. The smoothing surface 201 of the body 20, and the smoothing surface 201 of the connecting body 20 and the smoothing surface 103 of the implanting substrate 10 have at least one annular contact surface that conforms to each other such that the connecting body 20 and the implant The base 10 is connectable, and the smoothing surface 201 of the connecting body 20 is connected with the smoothing surface 103 of the implanting substrate 10 to form at least one annular tight joint. The connecting end 102 of the implant base 10 has a rough The processing surface 104 is connected to the connecting body 20 to improve the friction of the bonding, and the rough processing surface 104 of the implanting substrate 10 is sandblasted, etched, rolled, forged, embossed, embossed Grain, hobbing or printed grain, the implant substrate 1 described above A smoothing surface 103 of 0 is disposed on the outer side of the rough processing surface 104 to form a tightly connected inner portion to protect the inside of the bone implant 1 from being protected, thereby preventing the bone implant 1 from spoiling and deforming. The roughened surface 104 of the implanted substrate 10 is an annular surface or a partial surface. In this embodiment, the roughened surface 104 is disposed on the implanted substrate 10, and may of course be disposed on the connector 20, such as An embodiment is shown in FIG. 1 (same as FIG. 3(B)), and in the fourth embodiment, as shown in FIG. 3(C), the implant base 10 is provided with a roughened surface 104, and the connecting body 20 is also provided with a roughening treatment. Face 202, in other words, the present invention does not limit the position of the roughened surface, and is only provided at the time of implanting the substrate 10 or the connector 20, or both, to achieve the effect of improving the friction of the bonding, of course, the roughened surface It may be an annular surface or a partial area surface, and the roughened surface is sandblasted, etched, rolled, forged, embossed, embossed, hobbed or printed.

As shown in FIG. 3(A)(B)(C), the connecting end 102 of the implant base 10 of the bone implant 1 is connected to the connecting body 20 in a positioning hole manner, as shown in FIG. 4(A)(B). In the fifth, sixth, and seventh embodiments shown in (C), the connecting end 20 of the implant base 10 of the bone implant 1 is represented by a positioning post.

The eighth embodiment, as shown in FIG. 5(A), is for implanting a bone implant 1 (for example, a three-piece bone implant) of a biological skeleton, comprising: an implant base 10 having a plant end The inlet end 101 is for implantation in the biological skeleton, and the other end is a connecting end 102; a connecting body 20 is connected to the connecting end 102 of the implanting base 10; and an auxiliary connecting member 30 is connected to the connecting body 20 connected. In the present embodiment, the auxiliary connector 30 passes through the connector 20 and is inserted into the interior of the implant base 10. The front end portion of the auxiliary connecting member 30 may be provided with an external thread (not shown), and the inside of the implanting base 10 may be provided with an internal thread (not shown), thereby the auxiliary connecting member 30, the connecting body 20 and The implant base 10 is locked together and the present invention does not limit the locking method.

The connector 20 has a smooth processing surface 201. The auxiliary connecting member 30 has a smooth processing surface 301 for connecting to the smooth processing surface 201 of the connecting body 20, and the smooth processing surface 301 of the auxiliary connecting member 30 and the smooth processing surface 201 of the connecting body 20 have at least one shape. The annular contact surfaces are matched to each other such that the auxiliary connecting member 30 is connectable with the connecting body 20, and the smooth processing surface 201 of the connecting body 20 and the smooth processing surface 301 of the auxiliary connecting member 30 are at least formed in a ring-shaped tight connection. The auxiliary connecting member 30 further has a rough processing surface 302 for connecting to the connecting body 20 to improve the friction of the bonding, and the rough processing surface 302 of the auxiliary connecting member 30 is sandblasted, etched, Rolling grain, forging grain, embossing pattern, embossing pattern, hobbing pattern or printing pattern, the smooth processing surface 301 of the auxiliary connecting member 30 is disposed on the outer side of the rough processing surface 302, thereby forming a tight connection and protecting Inside, the bacteria are prevented from intruding into the interior of the bone implant 1 to be protected, and the bone implant 1 is prevented from being spoiled. The rough processing surface 302 of the auxiliary connecting member 30 is an annular surface or a partial surface.

The ninth embodiment is as shown in FIG. 5(B). This embodiment is basically the same as the eighth embodiment except that the rough processing surface 302 of the auxiliary connecting member 30 is originally disposed, and can also be set to be connected. The body 20 is in the position of the rough processing surface 202 as shown in FIG. 5(B). Of course, the rough processing surface may be simultaneously disposed on the auxiliary connecting member 30 and the connecting body 20, as shown in FIG. 5(C). The auxiliary connecting member 30 is provided with a rough processing surface 302. The connecting member 20 is also provided with a rough processing surface 202. In other words, the present invention does not limit the position of the rough processing surface, and is only disposed on the auxiliary connecting member 30 or the connecting member 20, Or both of them can achieve the effect of improving the friction of the combination. Of course, the roughened surface can be an annular surface or a partial area surface, and the rough surface is sandblasted, etched, rolled, forged, Embossing, embossing, hobbing or printing.

The roughness of the smooth treated surface described in the above embodiments is preferably 0.01 to 1.6 μm, and the static friction coefficient of the rough treated surface is preferably μs=0.10 to 0.50.

In the above embodiment, the bone implant 1 can be applied to an artificial implant or an artificial nail. However, the actual application field is not limited thereto, and any implant that can be applied to an organism is within the scope of the present invention.

In summary, the structural form of the present invention can provide a safe and stable bone implant 1 in which the bonding between members has a tight connection and a stable effect, and the bone implant 1 has a smooth treated surface. The connection between the components is prevented, the bacteria are prevented from invading the bone implant, the bone implant 1 is spoiled and deformed, and the artificial bone implant is clinically defeated, and the rough treatment surface can improve the friction of the joint, so that the bone implant 1 The components can be tightly locked together to achieve a firm bonding effect. In addition, the surface of the bone implant component is roughened to prevent the bone implant from loosening under prolonged use to improve the implant in the bone. Stability in the middle.

The above embodiments are merely illustrative of the principles and effects of the invention and are not intended to limit the invention. Therefore, those skilled in the art can make modifications and changes to the above embodiments without departing from the spirit of the invention. The scope of the invention should be as set forth in the appended claims.

1. . . Bone implant

10. . . Implanted matrix

101. . . Implant side

102. . . Connection end

103. . . Implanted substrate smooth surface

104. . . Implanted rough surface of the substrate

20. . . Connector

201. . . Smooth processing surface of the connector

202. . . Rough processing surface of the connector

30. . . Auxiliary connector

301. . . Smooth processing surface of auxiliary connector

302. . . Rough processing surface of auxiliary connector

5. . . Biological skeleton

7. . . Conventional two-piece bone implant

710. . . Implanted two-piece bone implant implant matrix

720. . . Conventional two-piece bone implant connector

8. . . Conventional three-piece bone implant

810. . . Implanted three-piece bone implant implant matrix

820. . . a three-piece bone implant connector

830. . . Auxiliary connector for a three-piece bone implant

9. . . Another conventional bone implant

910. . . Implanted matrix of another conventional bone implant

920. . . Another conventional connector for bone implants

940. . . Another adhesive for anatomical bone implants

Figure 1 (A) is a schematic cross-sectional view showing an exploded state of a first embodiment of the present invention.

Figure 1 (B) is a schematic cross-sectional view showing the state of bonding of the first embodiment of the present invention.

Figure 2 is a schematic cross-sectional view showing an exploded state of a second embodiment of the present invention.

Figure 3 (A) is a schematic cross-sectional view showing an exploded state of a third embodiment of the present invention.

Figure 3 (B) is a schematic cross-sectional view showing an exploded state of the first embodiment of the present invention.

Figure 3 (C) is a schematic cross-sectional view showing an exploded state of a fourth embodiment of the present invention.

Figure 4 (A) is a schematic cross-sectional view showing an exploded state of a fifth embodiment of the present invention.

Figure 4 (B) is a schematic cross-sectional view showing an exploded state of a sixth embodiment of the present invention.

Figure 4 (C) is a schematic view showing an exploded state of a seventh embodiment of the present invention.

Figure 5 (A) is a schematic cross-sectional view showing an exploded state of an eighth embodiment of the present invention.

Figure 5 (B) is a schematic cross-sectional view showing an exploded state of a ninth embodiment of the present invention.

Figure 5 (C) is a schematic cross-sectional view showing an exploded state of a tenth embodiment of the present invention.

Figure 6 is a schematic diagram of a three-piece bone implant.

Figure 7 is a schematic cross-sectional view of the exploded state of a three-piece bone implant.

Figure VIII is a schematic cross-sectional view of a two-piece bone implant.

Figure IX is a schematic cross-sectional view of another conventional bone implant.

1. . . Bone implant

10. . . Implanted matrix

101. . . Implant side

102. . . Connection end

103. . . Implanted substrate smooth surface

20. . . Connector

201. . . Smooth processing surface of the connector

202. . . Rough processing surface of the connector

5. . . Biological skeleton

Claims (10)

A bone implant comprising: an implant base having a connecting end at one end, the connecting end having a first smoothing surface, and an internal thread of the implanting base; a connecting body The implanting substrate is connected to have a second smoothing surface for connecting to the first smoothing surface, and between the second smoothing surface and the first smoothing surface An annular contact surface having at least one shape conforming to each other such that the connector is connectable to the implant base, and one of the connection ends of the connector and the implant base has a roughened surface for connection thereto The other of the connecting ends of the connecting body and the implanting substrate to increase the friction of the bonding, and the first or second smoothing surface is disposed on the outer side with respect to the roughened surface, the connecting body is outside a diameter larger than the inner side of the connecting body; and an auxiliary fixing member provided with an external thread, and the auxiliary fixing member passes through the connecting body and is inserted into the inner side of the implanting base by the inner and outer thread locks The auxiliary fixing member, the connecting member and the implant matrix. The bone implant of claim 1, wherein the other of the connecting ends of the connecting body and the implanting substrate further has a roughening surface for connecting the connecting end of the connecting body and the implanting base The person's rough treatment surface to improve the friction of the joint. The bone implant of claim 2, wherein the rough treated surface of the implant base and the roughened surface of the joint are sandblasted, etched, rolled, forged, embossed, pressed Printing, hobbing or printing. The bone implant of claim 2, wherein the implant matrix The roughened surface of the joint is an annular surface. The bone implant of claim 1, wherein the connector has the roughened surface, and the second smoothed surface is disposed on an outer side of the roughened surface. The bone implant of claim 4, wherein the roughened surface of the connector is an annular surface. The bone implant of claim 1, wherein the other end of the implant matrix is implanted in a biological bone. A bone implant comprising: an implant base having a connecting end at one end, and an internal thread is disposed inside the implant base; a connecting body is connected to the connecting end of the implant base, and the The connection system has a first smoothing surface; and an auxiliary connecting member is connected to the connecting body, and has a second smoothing surface for connecting to the first smoothing surface And the annular contact surface having at least one shape matching with each other between the second smoothing surface and the first smoothing surface to connect the auxiliary connecting member with the connecting body, the auxiliary connecting member and the connecting body One of the other has a rough processing surface for connecting to the other of the auxiliary connecting member and the connecting body to improve the friction of the bonding, and the first or the second smoothing surface is disposed opposite to On the outer side of the roughened surface, the diameter of the outer side of the auxiliary connecting piece is larger than the inner side of the auxiliary connecting piece, the auxiliary connecting piece is provided with an external thread, and the auxiliary connecting piece passes through the connecting body. The implant is inserted into the interior of the base body, by the inner and outer threads locking the auxiliary connecting member, the connecting member and the implant matrix. The bone implant of claim 8, wherein the auxiliary connector and the other of the connectors further have a roughened surface for connecting the auxiliary connector to the connector The person's rough treatment surface to improve the friction of the joint. The bone implant according to claim 9, wherein the roughened surface of the connecting body and the auxiliary connecting member is sandblasted, etched, rolled, forged, embossed, embossed, hobbed Or printed lines.