Two-part articulating joint spacer and method for producing said joint spacer

A spacer and joint technology, applied in joint implants, joint implants, hip joints, etc., can solve problems such as harmful effects in the rehabilitation process, reduce usage, save costs, and avoid unnecessary use. Effect

Inactive Publication Date: 2015-01-14
HERAEUS MEDICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The wear and tear can lead to inflammation that can have a detrimental effect on the healing process

Method used

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  • Two-part articulating joint spacer and method for producing said joint spacer

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Experimental program
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Effect test

Embodiment Construction

[0046] figure 1 The spacer shown is a two-part hinged knee spacer for temporary knee replacement. The selected section plane shown in the figure is a plane parallel to the sagittal plane of the artificial knee joint.

[0047] The two parts of the knee spacer are the tibial part 1 (in the figure 1 in the lower part) and femoral part 2 (in the figure 1 center above). The tibial portion 1 is attached to the patient's tibia 4 . The tibial part 1 comprises a joint head with a glenoid socket. The joint head is made from a first bone cement 6 which has sufficient hardness to prevent abrasion by using barium carbonate powder and / or calcium carbonate powder as a radiopaque agent, and which may optionally contain antibiotics / containing antibiotic. This makes the first bone cement 6 a low wear bone cement. The rest of the tibial part 1 is prepared with a second bone cement 7 containing a mixture of two water soluble antibiotics matched to the presented treatment setting for the pa...

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PUM

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Abstract

The invention relates to an articulating joint spacer for temporary replacement of a joint, whereby the joint spacer comprises two spacer parts which each comprise one sliding surface on which the spacer parts, in the patient-inserted state, touch against each other in mobile manner and roll off on each other, and the remaining spacer parts are made, at least in part, of a second bone cement that contains at least one water-soluble antibiotic. The invention also relates to a method for producing a two-part articulating joint spacer, in which a sliding surface is formed in both spacer parts from a low-abrasion first bone cement and at least the surfaces of the remaining spacer parts, at least 50% thereof, are formed with a second bone cement that contains at least one water-soluble antibiotic.

Description

technical field [0001] The present invention relates to an articulated joint spacer for temporary replacement of a joint, wherein the joint spacer comprises two spacer parts, each spacer part comprising a sliding surface, in an already The spacer portions in the state of being implanted in the patient's body are movably contacted against each other on the sliding surface and roll relative to each other. Furthermore, the present invention relates to a method of making a two-part articulating joint spacer. Background technique [0002] Joint endoprostheses generally have a useful life of several years. However, undesired loosening of the joint endoprosthesis may occur before the end of the usual service life. This may involve septic or aseptic loosening. Aseptic looseness means no microbial bacteria have been detected. There are many causes of aseptic loosening. Aseptic loosening is often associated with wear at the sliding surfaces of articular endoprostheses. The loose...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/30A61F2/38A61B17/00
CPCA61F2310/00353A61F2/36A61F2002/30677A61F2/34A61F2/42A61F2/30965A61F2/40A61F2/38A61F2/30A61F2002/30672A61F2/3872A61F2002/30016A61P31/00
Inventor 亨·金
Owner HERAEUS MEDICAL
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