Orthopedic implant

An orthopedic implant and base-layer technology, applied in medical science, internal bone synthesis, external plate, etc., can solve the problems of poor biocompatibility, poor biocompatibility, low quality, etc., and improve postoperative recovery , the effect of promoting orthopedic regeneration

Pending Publication Date: 2020-11-10
SHANDONG WEIGAO ORTHOPEDIC DEVICE COMPANY
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AI-Extracted Technical Summary

Problems solved by technology

[0003] Stainless steel has good toughness and good fixation effect, but its biocompatibility is poor, which can easily cause immune rejection and affect the su...
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Method used

In some embodiments of the present invention, the board head 201 is provided with some locking holes 204 and some Kirschner wire holes 205, and the locking holes 204 are inclined holes, so that the fixing member is inserted obliquely, and the fixing effect of the board is enhanced; Kirschner wire holes 205 are also provided at the ends of the main body 202 in the longitudinal direction for fixing the ends of the plates.
Only need to construct one layer of magnesium alloy structure, can realize the effect that orthopedic implant promotes bone growth, and does not need the magnesium alloy layer to be designed as how thick the size is, so the thickness of the first base layer 101 can be less than the second The thickness of the base layer 102 .
[0034] Magnesium alloy has better biocompatibility, immune rejection will not occur, and has the effect of promoting bone growth. However, ma...
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Abstract

The invention discloses an orthopaedic implant. The orthopaedic implant comprises a body, wherein the body at least comprises a first base layer and a second base layer, the first base layer is a nearbone layer in a use state relative to the second base layer, the first base layer is made of a magnesium alloy material, and the strength of the second base layer is greater than that of magnesium alloy. The magnesium alloy with higher biocompatibility is adopted and combined with other metal with higher strength to construct the orthopaedic implant, orthopaedic regeneration can be promoted, andpostoperative recovery is improved.

Application Domain

Bone plates

Technology Topic

Orthopaedic implantPostoperative recovery +6

Image

  • Orthopedic implant
  • Orthopedic implant
  • Orthopedic implant

Examples

  • Experimental program(2)

Example Embodiment

[0036] Example 1
[0037] In some embodiments of the present invention, the first base layer 101 is attached to 102 on the second base layer. Specifically, the magnesium alloy can be made into magnesium alloy thin paper, which is similar to tin foil paper, cut into a desired size and shape, and attached to the surface of the second base layer 102. The first base layer 101 does not necessarily cover the entire end surface of the second base layer 102. The first base layer 101 may cover a part of the end surface of the second base layer 102 as long as the contact area with the bone can be satisfied.
[0038] It is only necessary to construct a layer of magnesium alloy structure to achieve the effect of orthopedic implants to promote bone growth, without the need to design the magnesium alloy layer to be of a thickness thickness.

Example Embodiment

[0039] Example 2
[0040] reference figure 1 In some embodiments of the present invention, the first base layer 101 is partially embedded in the second base layer 102, or the second base layer 102 is partially embedded in the first base layer 101. That is, the first base layer 101 and the second integrated layer 102 are configured as an embedded structure.
[0041] Specifically, if the first base layer 101 is partially embedded in the second base layer 102, the width of the first base layer 101 embedded in the second base layer 102 is greater than the width of the first base layer 101 located outside the second base layer 102;
[0042] If the second base layer 102 is partially embedded in the first base layer 101, the width of the second base layer 102 embedded on the side of the first base layer 101 is greater than the width of the second base layer 102 located outside the first base layer 101.
[0043] In some embodiments of the present invention, the first base layer 101 and the second base layer 102 are provided with a cooperating combination structure, including a groove structure and a claw structure that can be caught in the groove structure;
[0044] If the groove structure is located on the second base layer 102, the claw structure is located on the first base layer 101;
[0045] If the groove structure is located on the first base layer 101, the claw structure is located on the second base layer 102.
[0046] In the following, the first base layer 101 is embedded in the second base layer 102 as an example to illustrate the matching structure between the two.
[0047] The first base layer 101 is processed into a structure with a wide end and a narrow end, and one end of the wide end is formed as a claw 1011; the second base layer 101 is processed with a groove structure 1021 that is similar to the shape of the first base layer 101. The base layer 101 can be assembled in the groove structure 1021. After assembly, the surfaces of the first base layer 101 and the second base layer 1021 are flush. With this assembly structure, the first base layer 1011 can only cover a part of the surface of the second base layer 1021.
[0048] Below, a specific orthopedic implant is provided, which is a locking plate, reference figure 2 with image 3.
[0049] For the locking plate, the second base layer 102 is plate-shaped, including a plate head 201 and a plate main body 202, which are connected by a transition part; the plate head 201 and the plate main body 202 are configured to be biomimetic to fit a suitable bone For example, this embodiment is a locking plate applicable to the fibula, and the structure of the plate head 201 is related to the structure of the fibula bone which can fit; the plate main body 202 has a long handle shape. For the locking plate, the magnesium alloy first base layer 101 is set on the side where the locking plate is attached to the bone when the locking plate is in use, and the second base layer can be made of other metal materials that are harder than magnesium alloy. In addition, it is provided at least at the board main body portion 201 or the transition portion 203. The setting position of the first base layer 101 mainly considers that the fracture position is usually set in the bone segment corresponding to the plate main body part 201 and the transition part 203.
[0050] In some embodiments of the present invention, the board head 201 is provided with a plurality of locking holes 204 and a plurality of Kirschner pin holes 205. The locking holes 204 are inclined holes to allow the fixing member to be inserted obliquely to enhance the fixing effect of the board; the board main body 202 Kirschner pin holes 205 are also provided at the ends in the length direction of the plate for fixing the plate ends.
[0051] The board main body 202 is provided with a plurality of pressure locking holes, the pressure locking hole includes a pressure hole section 2061 and a locking hole section 2061. The pressure hole section 2061 is a vertical hole, and the locking hole section 2062 is an inclined hole. The pressure hole section 2061 and the locking hole section 2062 may be in a form of communication in the middle.
[0052] The above-mentioned compression hole section 2061 is used to insert a compression screw: the tail of the compression screw has no thread, and during the tightening process, the plate can be brought closer to the bone surface. The closer the plate is to the surface of the bone, the shear force of the screw can be dispersed to the plate, reducing the occurrence of short nails.
[0053] The above-mentioned locking hole section 2062 is used for inserting, for example, a locking screw: the end of the locking screw is provided with a thread, which can achieve a locking effect. Because compression screws may become loose after surgery, if the steel plate and screw are loose, it will increase the fatigue stress of the screw and steel plate, causing the screw and steel plate to break, and the use of locking screws will prevent the plate from loosening relative to the preset position.
[0054] Operation process: 1. First place the locking plate at the preset position on the outer side of the distal end of the fibula, with the side of the first base layer 101 facing the fibula, adjust the position of the locking plate so that the locking plate fits the surface of the fibula more closely; 2. Along the Kirschner wire hole 205 Drive in Kirschner wire; 3. Screw in the compression screw in the compression hole of the compression locking hole, 4. Select several locking holes, screw in the locking screw, and complete the operation.
[0055] After screwing in the screws, the magnesium alloy side of the bionic locking plate can better fit the injured bone and promote bone growth.

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Description & Claims & Application Information

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