Wound retraction apparatus and method
First Claim
1. A surgical wound retractor adapted to dilate a wound stretchable to a desired diameter, the retractor comprising:
- a first ring having a diameter greater than the desired diameter of the wound and being adapted for this disposition interiorly of the wound;
a second ring having a diameter greater than the desired diameter of the wound and being adapted for disposition exteriorly of the wound;
at least one retraction element disposed in a generally cylindrical form between the first ring and the second ring, at least one retention element being adapted for disposition through the wound to exam a radial retraction force on the wound, the retraction force being dependent on the distance separating the first ring and the second rind.
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Accused Products
Abstract
A surgical wound retractor is adapted to dilate a wound stretchable to a desired diameter, the retractor includes a first ring having a diameter treater than that desired for the wound and being adapted for disposition interiorly of the wound. A second ring has a diameter greater than that desired for the wound and is adapted for disposition exteriorly of the wound. A plurality of retraction elements are disposed in a generally cylindrical relationship to each other, between the first ring and the second ring. These elements extend through the wound to exert a radial retraction force on the wound which is dependent on the distance separating the first ring and the second ring. Retraction elements, both distensible and non-distensible are contemplated with appropriate attachment means at the rings to provide for variations in the retraction force. With a suitable retraction sleeve, a third ring can be provided to form a circumferential retainer to vary the retraction force. Rings can also be made inflatable or self-expanding to vary the retraction force. An associated method includes the step of rolling the second ring circumferentially of the third ring to form the circumferential retainer.
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Citations
29 Claims
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1. A surgical wound retractor adapted to dilate a wound stretchable to a desired diameter, the retractor comprising:
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a first ring having a diameter greater than the desired diameter of the wound and being adapted for this disposition interiorly of the wound;
a second ring having a diameter greater than the desired diameter of the wound and being adapted for disposition exteriorly of the wound;
at least one retraction element disposed in a generally cylindrical form between the first ring and the second ring, at least one retention element being adapted for disposition through the wound to exam a radial retraction force on the wound, the retraction force being dependent on the distance separating the first ring and the second rind. - View Dependent Claims (2, 4, 5)
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3. The surgical wound retractor, further comprising:
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at least one of the first ring and the second ring includes a plurality of retainers; and
each of the elastomeric elements is adapted for retention by an associated one of the retainers on at least one ring.
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6. A surgical wound retractor adapted to dilate a wound stretchable to a desired diameter, the retractor comprising:
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a first ring, having a diameter greater than the desired diameter of the wound and being adapted for this position interiorly of the wound;
a second ring having a diameter greater than the desired diameter of the wound and being adapted for disposition exteriorly of the wound;
a plurality of retraction elements disposed in a generally cylindrical relationship to each other between the first ring and the second ring, the retention elements being adapted for disposition through the wound to exert a radial retraction force on the wound of sufficient magnitude to dilate the wound to the desired diameter, the retraction force being dependent on the distance separating the first ring and the second ring;
the retraction elements having a distal end and a proximal end, and being coupled to the first ring at the distal end;
the retraction elements having a plurality of engagement sites disposed between the proximal end and the distal end, each of the engagement sites being associated with a different retraction force; and
the second ring having properties for engaging a selected one of the engagement sites to provide the associated radial retraction force. - View Dependent Claims (7, 8, 9)
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10. A surgical wound retractor, adapted to dilate a wound stretchable to a desired diameter, the retractor comprising:
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a first ring having a diameter greater than the desired diameter of the wound and being adapted for disposition interiorly of the wound;
a second ring adapted for disposition exteriorly of the wound;
a retraction sleeve having a generally cylindrical configuration with a first end coupled to the first ring and a second end coupled to the second ring;
a third ring coupled to the sleeve between the first end and the second end, the third ring being adapted for disposition exteriorly of the wound; and
the second ring and the third ring having elastromeric properties facilitating the circumferential rolling of the second ring relative to the third ring to provide the sleeve with a radial retraction force sufficient to stretch the wound to the desired diameter. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A surgical wound retractor, adapted to dilate a wound stretchable to a desired diameter, the retractor comprising:
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a first ring having a diameter greater than the desired diameter of the wound and being adapted for disposition interiorly of the wound;
a second ring adapted for disposition exteriorly of the wound;
a retraction sleeve having a generally cylindrical configuration with a first end coupled to the first ring and a second end coupled to the second ring;
a third ring disposed circumferentially of the sleeve and moveable between a plurality of positions between the first ring and the second ring, each of the positions being associated with a different radial retraction force; and
means for retaining the third ring at one of the plurality of positions in order to provide the desired radial retraction force associated with that position. - View Dependent Claims (17, 18, 19, 20, 21, 22)
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23. A method for operating a surgical wound retractor to provide a desired radial retraction force on a wound, the method comprising the steps of:
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providing a retention sleeve having an axis, a first end attached to a first ring and a second end attached to a second ring axially spaced from the first ring;
providing a third ring, generally fixed to the sleeve between the first ring and the second ring;
rolling the second ring circumferentially of the third ring to form a circumferential retainer, the retainer being positioned axially of the first ring at a particular distance associated with the desired radial retention force on the wound. - View Dependent Claims (24, 25, 26)
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27. A surgical wound retractor, adapted to dilate a wound stretchable to a desired diameter, the retractor comprising
a first ring having a diameter greater than the desired diameter of the wound and being adapted for disposition interiorly of the wound; -
a second ring adapted for disposition exteriorly of the wound;
a retraction sleeve having a generally cylindrical configuration with a first end coupled to the first ring and a second end coupled to the second ring;
a third ring disposed circumferentially of the sleeve and moveable between a plurality of positions between the first ring and the second ring, each of the positions being associated with a different radial retraction force; and
a unidirectional mechanism for retaining the third ring at one of the plurality of positions in order to provide the desired radial retraction force associated with that position. - View Dependent Claims (28, 29)
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Specification