초록 ▼

A surgical method and device are provided which enable to prepare a natural patella for accepting a patella implant, while preserving a predetermined thickness of the natural patella. The device comprises: (a) a bone shaping element such as a reamer or a miller, including: (i) a rotatable bone shapi

A surgical method and device are provided which enable to prepare a natural patella for accepting a patella implant, while preserving a predetermined thickness of the natural patella. The device comprises: (a) a bone shaping element such as a reamer or a miller, including: (i) a rotatable bone shaping member having a lower edge; (ii) a shaft member having a scale including at least one marker; and (b) a guiding device for guiding the bone shaping element, including: (i) a patella holder for holding the natural patella; (ii) a pointer positioned at a constant distant from the patella holder for pointing at the marker, such that the distance between the pointer and the patella holder equals the sum of: the distance between the marker and the lower edge of the bone shaping member; and the preserved thickness of the natural patella. The method comprises: (a) holding the natural patella by means of a patella holder; (b) shaping the natural patella by means of a bone shaping element, the bone shaping element having: a marker; and a lower edge; (c) monitoring the shaping by means of a pointer, the distance between the pointer and the patella holder being equal to the sum of: (i) the distance between the marker and the lower edge; and (ii) the preserved thickness of the natural patella, such that when the marker merges with the pointer, a conclusion is made that the preserved thickness of the natural patella equals the predetermined value.

대표청구항 ▼

[ What is claimed is:] [1.] A bone shaping device for preparing a natural patella to accept a patella implant while preserving a predetermined thickness of the natural patella, comprising:(a) a bone shaping element, including:(i) a rotatable bone shaping member having a lower edge;(ii) a shaft membe

[ What is claimed is:] [1.] A bone shaping device for preparing a natural patella to accept a patella implant while preserving a predetermined thickness of the natural patella, comprising:(a) a bone shaping element, including:(i) a rotatable bone shaping member having a lower edge;(ii) a shaft member having a scale including at least one marker being connected said rotatable bone shaping member; and(b) a guiding device for guiding said bone shaping element, including a construction holding:(i) a patella holder for holding the natural patella;(ii) a pointer positioned at a constant distant from said patella holder for pointing at said marker,such that the distance between said pointer and said patella holder equals the sum of: the distance between said marker and said lower edge; and the preserved thickness of the natural patella.