Abdominal retractor
First Claim
Patent Images
1. An adjustable retractor, comprising:
- an inner ring having a minimum overall diameter of 20 cm;
an outer ring spaced from the inner ring and having a minimum overall diameter of 20 cm; and
an elongate sleeve open at opposite ends, the sleeve extending between the inner and outer rings and being connected at opposite ends to the rings,wherein the outer ring is provided with a pre-loaded rotational torque to assist with rotation of the outer ring about its central axis to roll the sleeve about the outer ring to adjust sleeve length.
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Abstract
An adjustable retractor is disclosed comprising an inner ring, an outer ring spaced from the inner ring, and an elongate sleeve open at opposite ends. The sleeve is provided and extends between the inner and outer rings and is connected at the opposite ends to the rings. The outer ring is provided with a pre-loaded rotational torque to assist with rotation of the outer ring about its central axis to roll the sleeve about the outer ring to adjust sleeve length. An obstetrics version of the retractor may be used for caesarean sections. A hydraulically controlled retractor includes fluid channels in the inner and outer rings that may be dilated by injection of an appropriate fluid.
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Citations
17 Claims
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1. An adjustable retractor, comprising:
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an inner ring having a minimum overall diameter of 20 cm; an outer ring spaced from the inner ring and having a minimum overall diameter of 20 cm; and an elongate sleeve open at opposite ends, the sleeve extending between the inner and outer rings and being connected at opposite ends to the rings, wherein the outer ring is provided with a pre-loaded rotational torque to assist with rotation of the outer ring about its central axis to roll the sleeve about the outer ring to adjust sleeve length. - View Dependent Claims (2, 3, 4)
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5. A method of retracting the tissue surrounding a surgical incision, the method comprising:
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providing an adjustable retractor comprising an elastic inner ring having a minimum overall diameter of 20 cm, an outer ring spaced from the inner ring and having a minimum overall diameter of 20 cm, and an elongate sleeve open at opposite ends, the sleeve extending between the inner and outer rings and being connected at opposite ends to the rings, wherein the outer ring is provided with a pre-loaded rotational torque to assist with rotation of the outer ring about its central axis to roll the sleeve about the outer ring to adjust sleeve length; deforming the inner ring into an oblong shape and inserting it into the surgical incision; releasing the inner ring such that it returns to its original shape under skin surrounding the incision; and adjusting the length of the sleeve by rotating the outer ring about its central axis with the assistance of the pre-loaded torque to roll the sleeve about itself and the outer ring to adjust sleeve length. - View Dependent Claims (6, 7, 8)
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9. A method of retracting the tissue for a surgical procedure, the method comprising:
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making an incision no longer than approximately 15 cm; providing an adjustable retractor comprising an elastic inner ring having a overall diameter of approximately 25 cm, an outer ring spaced from the inner ring and having an overall diameter of approximately 25 cm, and an elongate sleeve open at opposite ends, the sleeve extending between the inner and outer rings and being connected at opposite ends to the rings deforming the inner ring into an oblong shape and inserting it into the surgical incision; releasing the inner ring such that it returns to its original shape under skin surrounding the incision; and adjusting the length of the sleeve by rotating the outer ring about its central axis with the assistance of the pre-loaded torque to roll the sleeve about itself and the outer ring to adjust sleeve length. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A method of retracting the tissue for a surgical procedure, the method comprising:
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making an incision no longer than a predetermined incision length; providing an adjustable retractor comprising an elastic inner ring having a diameter that is significantly larger than the incision length, such that the incision length is no greater than approximately 60% of the inner ring diameter, an outer ring spaced from the inner ring, and an elongate sleeve open at opposite ends, the sleeve extending between the inner and outer rings and being connected at opposite ends to the rings deforming the inner ring into an oblong shape and inserting it into the surgical incision; releasing the inner ring such that it returns to its original shape under skin surrounding the incision; and adjusting the length of the sleeve by rotating the outer ring about its central axis with the assistance of the pre-loaded torque to roll the sleeve about itself and the outer ring to adjust sleeve length. - View Dependent Claims (16, 17)
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Specification