NATURAL ORIFICE ACCESS DEVICE
Embodiments of a natural orifice access device that is adapted for being coupled to a cap and that may be adjusted in length to accommodate variations in patient body types and variations in the location of surgical sites within the natural orifices of patients are described.
1 . An adjustable surgical access device adapted for use in a natural orifice comprising:
an exterior portion comprising a funnel segment having a proximal end and a distal end and an outer ring coupled to the proximal end of the funnel segment; and
an interior portion comprising a tubular body having an inner surface, an outer surface, a proximal end and a distal end, and an inner ring disposed around the outer surface of the distal end of the tubular body;
wherein the outer ring is configured to be disposed proximate the natural orifice of the patient and substantially surround the orifice, the inner ring is configured to be disposed within the natural orifice to anchor the access device and the exterior portion is slidably engaged with the interior portion to thereby provide a variable distance between the outer ring and the inner ring.
2 . The adjustable surgical access device of claim 1 , further comprising a tubular channel having an outer surface coupled to the distal end of the funnel segment, wherein the tubular channel is slidably disposed within the tubular body.
3 . The adjustable surgical access device of claim 2 , further comprising external threads disposed around the outer surface of the tubular channel and internal threads disposed around the inner surface of the tubular body, wherein the external threads engage with the internal threads such that rotating the external threads in one direction will shorten the access device while rotating the threads in the opposite direction will lengthen the access device.
4 . The adjustable surgical access device of claim 2 , further comprising at least one pin on the outer surface of the tubular channel and two or more holes in the tubular body adapted to receive the pin in a snap-fit to thereby fix the exterior portion to the interior portion with a selected distance between the outer ring and the inner ring.
5 . The adjustable surgical access device of claim 2 , further comprising at least one pin on the outer surface of the tubular channel and a groove in the tubular body, the groove adapted to receive the pin, the groove having at least two recess slots such that sliding the pin into a recess slot will fix the exterior portion to the interior portion with a selected distance between the outer ring and the inner ring.
6 . The adjustable surgical access device of claim 1 , further comprising at least one tab protruding inwardly from the funnel portion and two or more slots in the tubular body, the slots positioned at different distances from the inner ring and adapted to receive the tab, wherein the exterior portion is disposed around the tubular body of interior portion such that the exterior portion can be moved along the axis of the tubular body until the tab is inserted into a slot, to thereby fix the exterior portion to the interior portion with a selected distance between the outer ring and the inner ring.
7 . The adjustable surgical access device of claim 1 , wherein the tubular body comprises a substantially flexible material.
8 . The adjustable surgical access device of claim 7 , wherein the flexible material is selected from the group consisting of a KRATON® material, a PELLETHANE® material and a silicone rubber material.
9 . The adjustable surgical access device of claim 1 , wherein the tubular body comprises a polycarbonate.
10 . (canceled)
11 . The adjustable surgical access device of claim 10 , wherein the generally cylindrical passage is sufficiently large such that two or more surgical instruments positioned there through can be translated or pivoted relative to one another.
12 . The adjustable surgical access device of claim 1 , wherein the tubular body comprises one or more coatings.
13 . The adjustable surgical access device of claim 7 , wherein the coating comprises an anti-microbial coating.
14 . The adjustable surgical access device of claim 1 , wherein the tubular body is formed from a relatively flexible material and the funnel segment and the outer ring are formed from a relatively rigid material.
15 . The adjustable surgical access device of claim 1 , further comprising at least one suture point disposed on the exterior portion adjacent the outer ring.
16 . The adjustable surgical access device of claim 1 , further comprising a removable cap, wherein the cap is adapted to sealingly engage the outer ring.
17 . The adjustable surgical access device of claim 16 , wherein the cap comprises a sealable access surface.
18 . The adjustable surgical access device of claim 17 , wherein the sealable access surface is a gel pad.
19 . The adjustable surgical access device of claim 17 , further comprising at least one trocar access device, wherein the trocar access device is adapted to be positioned through the sealable access surface.
20 . The adjustable surgical access device of claim 19 , wherein at least one of the trocar access devices has a low profile.
21 . (canceled)
22 . (canceled)
23 . (canceled)
24 . (canceled)
25 . (canceled)
26 . (canceled)
27 . (canceled)
28 . (canceled)
29 . (canceled)
30 . An adjustable surgical access device adapted for use in a natural orifice comprising:
an outer ring;
a tubular body;
a funnel segment extending between and coupling the outer ring and the tubular body, the funnel segment providing a diametric reduction between the relatively large diameter of the outer ring and the relatively smaller diameter of the tubular body; and
a clamp having a latch and at least one suturing tab, configured to be disposed proximate the natural orifice of the patient, the tubular body slidably disposed within the clamp, wherein the latch is movable from an open position, in which the tubular body moves freely through the clamp, and a closed position, in which the tubular body is locked in place.