Surgical instruments with improved traction

Details Surgical instruments with improved traction Surgical instruments with improved traction

A - Human Necessities

61

B

A61B 17/00 (2006.01) A61B 17/02 (2006.01) A61B 17/122 (2006.01) A61B 17/28 (2006.01)

Patent

CA 2279385

A surgical instrument (10) is adapted to contact tissue of a patient, and to provide traction with the tissue in order to inhibit migration of the instrument relative to the tissue. The instrument may include a pair of opposing jaws (16, 18) with at least one of the jaws (16, 18) comprising a substrate having a particular surface facing the tissue, and a plurality of discrete elements (26, 28) disposed on the particular surface for increasing the traction of the instrument relative to the tissue. These discrete elements (26, 28) may include a multiplicity of granules, bristles, or projections, and may be formed of materials having various properties such as hydrophilic characteristics. The discrete elements in the form of bristles can be oriented too so that the column strength of each bristle provides increased traction in a predetermined direction.

L'invention concerne un instrument chirurgical (10) adapté pour venir en contact avec les tissus d'un patient et pour assurer la traction avec les tissus de manière à empêcher le déplacement de l'instrument par rapport aux tissus. L'instrument peut comporter une paire de mâchoires opposées (16, 18). L'une de ces mâchoires, au moins, (16, 18) comporte un substrat doté d'une surface spéciale, faisant face au tissu, et d'une pluralité d'éléments séparés (26, 28) disposés sur ladite surface dans le but d'augmenter la traction de l'instrument par rapport aux tissus. Ces éléments séparés (26, 28) peuvent comporter une pluralité de granules, de poils, ou de protubérances et peuvent être formés à partir de matériaux ayant diverses propriétés telles que des caractéristiques hydrophiles. Les éléments séparés en forme de poils peuvent également être orientés de manière que la résistance à la flexion par compression axiale de chaque poil assure une traction accrue dans un sens prédéterminé.

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