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US 6,358,283 B1Granted
Implantable device for lengthening and correcting malpositions of skeletal bones
OwnerChristian Högfors, Abbas Karladaniinventors
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OwnerChristian Högfors, Abbas Karladaniinventors
Estimating the term…
An implantable device for lengthening and correcting malpositions of skeletal bones, which device has an elongate shape comprising a first end, a second end, a length dimension and a cross-sectional dimension. The device further comprises a lengthening body for bringing the first and second ends into displacement from each other to a predetermined distance between each other after an activation. Thereby, the lengthening body comprises an absorbent body, which is arranged for bringing the first and second ends to the predetermined distance by means of a controlled swelling after the activation, while the length dimension increases more than the cross-sectional dimension. The implantable device can advantageously be implemented for lengthening and also for correcting rotational and angular malpositions of skeletal bones, for example in connection with stabilizing fractures, post-traumatic bone defects, bone shortenings, malpositions, congenital malformations, and bone defects after tumor surgery.
An implantable device for lengthening and correcting malpositions of skeletal bones, and said device having an elongate shape comprising a first end, a second end, a length dimension and a cross-sectional dimension, wherein said device further comprises a means for lengthening by bringing said first and second ends into displacement from each other to a predetermined distance between each other after wetting, wherein the means for lengthening comprises an absorbent body, which is arranged for bringing said first and second ends to said predetermined distance by means of a controlled swelling after wetting, while the length dimension increases more than the cross-sectional dimension, wherein the absorbent body is enclosed by a liquid-permeable membrane having permeation properties adapted for providing a controlled permeation rate of water into said absorbent body during wetting.
Dependencies are inferred from the claim text.