Guided retractor and methods of use

Details Guided retractor and methods of use Guided retractor and methods of use

A - Human Necessities

61

B

A61B 17/00 (2006.01)

Patent

CA 2547065

The present invention provides methods and apparatus in which a surgical retractor comprises a plurality of mechanically coupled tissue retaining walls that are guided into position along one or more guides previously implanted into the patient. The walls are preferably coupled by pivots, so that separating some of the walls from one another opens an operating space. There are preferably two guides, which are driven or screwed into the pedicles of vertebrae, or other bone. Oversized channels are best disposed in a frame, which also serves to hold lock the walls apart. Various convenience features are contemplated including a web disposed between the walls, which expands as the walls are separated. Also contemplated are projections from near the bottoms of one or more of the walls, which can alternatively or additionally help to hold the underlying tissue in place.

L'invention concerne des procédés et des dispositifs reposant sur l'utilisation d'un rétracteur chirurgical qui comprend plusieurs parois de retenue de tissu à couplage mécanique, guidées en position le long d'un ou plusieurs guides précédemment implantés dans le patient. De préférence, les parois sont couplées par des pivots, de sorte que la séparation de certaines parois par rapport à une autre paroi ouvre un espace opératoire. Il existe de préférence deux guides, entraînés ou vissés dans les pédicules des vertèbres, ou autres éléments osseux. La configuration optimale consiste à disposer des canaux surdimensionnés dans un cadre, qui tient lieu également de verrou de retenue des parois en position séparée. On peut envisager divers éléments de commodité, y compris une bande entre les parois, capable d'expansion accompagnant la séparation des parois, mais aussi des protubérances depuis un emplacement proche du fond d'une ou plusieurs parois, capables de contribuer en remplacement ou de façon complémentaire à la retenue des tissus sous-jacents en place.

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