Spacer device for treating a joint of the human body

Abstract

Spacer device, implantable in the human body for the treatment of a bone seat or joint seat or for the two-step treatment of the infections of the joint prostheses, comprising a joint component (2), adapted to be inserted during use in an articular zone of the patient and provided with an external surface (E), a stem component (3), adapted to be implanted during use in a bone or in a residual bonebed of a preceding joint prosthesis, and connection means (4) of adjustable type, wherein at least part of the external surface of the first portion (11) of the stem component (3) and at least part of the external surface (E) of the joint component (2) define a contact surface with the bone tissue and / or adapted for coupling with the bone tissue, wherein the connection means (4) are placed between the joint component (2) and the stem component (3) in order to adjust the distance (G) thereof, wherein the contact surface present in the joint component (2) and / or in the stem component (3) comprises a plurality of recesses (14, 24) for housing a filling material (M) comprising at least one pharmaceutical or medical substance, wherein the plurality of recesses (14, 24) affects or is substantially placed along the entire contact surface or in proximity thereto.

Description

technical field [0001] The present invention relates to spacer devices of the temporary disposable type for use in the treatment of bone pathology, ie, for example, infected bone tissue or infected human bone joints. [0002] The invention also relates to a method of manufacturing such a spacer device. Background technique [0003] Rarely, articular bone becomes infected following trauma or by abscesses of microorganisms transported by the bloodstream (eg, dental). In this case, the infected joint ends are surgically removed and in their place a spacer device is placed whose function is to restore the joint and release anti-infective drugs on site in order to eradicate the infection. Once these motions are complete, the spacer unit is removed and its joint motion replaced with the final prosthesis. [0004] Prostheses implanted in the human body are known to suffer from infections. [0005] In this case, the infected prosthesis must be removed from the implant site, and t...

AI Technical Summary

Problems solved by technology

[0010] In such spacer devices, the amount of drug or medical substance that can potentially be impregnated along the porous outer surface is limited by the depth and elongation of its surface

In such cases, the spacer device may not be able to ensure the release of the drug or medicinal substance for a period of time equal to that necessary for complete healing of the infected seat

In addition, when using devices of known type, it is not possible to apply two or more pharmaceutical or medical substances different from each other, keeping these substances separated from each other

In fact, in said shims of known type, it is not easy to apply different substances to the patient's bone tissue in the different separate areas arranged along the coupling surface

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