Sealing device for the medullary cavity
OwnerKlaus Draenertinventor
Life of this patent
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Abstract
The invention relates to a device for sealing the medullary cavity of a bone during the application of bone cement. The device comprises an elastic bottom portion (10) for positive contact with the bone around the medullary cavity and a rigid top portion (30). When the bone cement cartridge (40) is pushed down, the rigid top portion (30) presses the bottom portion (10) against the bone, and the medullary cavity is sealed in a vacuum-tight manner. The device according to the invention makes it easier to fill the medullary cavity with bone cement under vacuum and to carry out drainage at the same time. (FIG. 1).
Claims19
A device for sealing a medullary cavity of a bone during the vacuum-application of bone cement, comprising:
- an elastic bottom portion having means thereon for removably contacting the bone and providing a partial vacuum seal around the medullary cavity during the vacuum-application of bone cement and for releasing the bottom portion from the bone after the application of the bone cement, the bottom portion having an opening therethrough for applying bone cement to the medullary cavity, and the bottom portion having a section curved upwardly in a direction away from the medullary cavity when positioned thereon such that pressing the curved section seals the bottom portion to the bone;
- and
- a rigid top portion fixedly attached to the curved section for pressing the elastic bottom portion against the bone, the top portion having an opening therethrough in communication with the opening of the bottom portion for applying the bone cement;
- wherein the top portion and the bottom portion are removable from the medullary cavity after the application of the bone cement.
Dependencies are inferred from the claim text.