Regulation 3.2 AUSTRALIA Patents Act 1990 COMPLETE SPECIFICATION STANDARD PATENT Invention Title: Surgical access port with cinching attachment mechanism The following statement is a full description of this invention, including the best method of performing it known to us: SURGICAL ACCESS PORT WITH CINCHING ATTACHMENT MECHANISM BACKGROUND The present invention relates in general to surgical devices and procedures, and more particularly to access devices. Surgical procedures are often used to treat and cure a wide range of diseases, conditions, and injuries. Surgery often requires access to internal tissue through open surgical procedures or endoscopic surgical procedures. The term "endoscopic" refers to all types of minimally invasive surgical procedures including laparoscopic and arthroscopic procedures. Endoscopic surgery has numerous advantages compared to traditional open surgical procedures, including reduced trauma, faster recovery, reduced risk of infection, and reduced scarring. Endoscopic surgery is often performed with an insufflatory fluid present within the body cavity, such as carbon dioxide or saline, to provide adequate space to perform the intended surgical procedures. The insufflated cavity is generally under pressure and is sometimes referred to as being in a state of pneumoperitoneum. Surgical access devices are often used to facilitate surgical manipulation of internal tissue while maintaining pneumoperitoneum. For example, trocars are often used to provide a port through which endoscopic surgical instruments are passed. Trocars generally have a sealing valve that prevent the insufflatory fluid from escaping while an instrument is positioned in the trocar. As a further example, hand access ports are also used during endoscopic surgery, sometimes referred to as hand assisted laparoscopic surgery ("HALS"). A hand access port will typically seal around a surgeon's hand or arm to prevent the insufflatory fluid from escaping while allowing the surgeon to manipulate tissue within the patient's body. Iris valves, gel pads, and inflatable balloons are some examples of seals used in HALS access ports. While surgical access devices are known, no one has previously made or used a surgical access device in accordance with the present invention. BRIEF DESCRIPTION OF DRAWINGS While the specification concludes with claims which particularly point out and distinctly claim the invention, it is believed the invention will be better understood from the following description taken in conjunction with the accompanying drawings illustrating some non-limiting 2 examples of the invention. Unless otherwise indicated, the figures are not necessarily drawn to scale, but rather to illustrate the principles of the invention. Fig. 1 depicts an exploded perspective view of an access port and a wound protector; Fig. 2 depicts a cross-sectional view of a deployed wound protector; Fig. 3 depicts a top plan view of an access port; Fig. 4 depicts cross-sectional view of an uncinched access port and wound protector; Fig. 5 depicts cross-sectional view of a cinched access port and wound protector; and Fig. 6 depicts cross-sectional view of a cinched access port and wound protector. DETAILED DESCRIPTION Fig.1 illustrates an example of a surgical access device. The device includes a wound protection (10) and a hand access port (20). The wound protector (10) in this example is a flexible variable length roll-up type of wound protector. Naturally, other types of wound protectors may also be used, including without limitation flexible fixed length wound protectors, flexible variable length pull-up types of wound protectors, rigid wound protectors, and the like. In this embodiment the distal ring (12) is circular ring with a circular cross-sectional geometry; however, non-circular rings and non-circular cross-sectional geometries are also possible. For instance, the distal ring could have an oval or elliptical in cross-sectional shape. In this embodiment the sleeve (14) is a single layered tube of material; however, a discontinuous sleeve or multi-layered sleeves are also possible. The sleeve (14) may be transparent, translucent, or opaque. As shown here, the sleeve (14) is fastened at its ends to the proximal and distal rings (12, 16) using an adhesive or heat sealing techniques; however, alternative techniques may also be employed. The length of the sleeve (14) can also vary. For instance, the sleeve may be between 2 cm and 14 cm in length; however, other lengths are also possible. The thickness of the sleeve (14) can also vary. In this embodiment the proximal ring (16) is a circular ring; however, non-circular rings are also possible. The proximal ring (16) can also vary in size, but is preferably sized to receive a surgeon's hand. Optionally, the ratio of the distal ring (12) and proximal ring (16) diameters is between 0.4 and 1.2. The proximal ring (16) can take a variety of different cross-sectional geometries. In this embodiment, the proximal ring (16) is formed from an extruded polymer with a cross-sectional geometry of has a generally figure eight shape. The extruded material is shaped 3 into a ring with metal wires inserted in the two annuli. Naturally, other geometries are also contemplated. Fig. 2 depicts an example of the wound protector (10) in a deployed position in a patient. In this example the wound protector in positioned in a patient's abdominal wall through an incision. To deploy the wound protector, the distal ring (12) is held in a collapsed position (e.g., in an oblong shape like an oval, a peanut, a figure eight, and the like) to reduce its size and then inserted through the incision. After insertion, the distal ring (12) is released and then expands to its ring-like shape. As shown here, the expanded distal ring (12) is larger than the incision and sits against the peritoneal surface of the abdominal wall. The proximal ring (16) includes a proximal face (1 6A), a distal face (16B), a medial face (16C), and a lateral face (16D). The medial and lateral faces (16C, 16D) each have a recessed valley about the circumference of the proximal ring (16). The proximal ring (16) is rollable to gather the flexible sleeve (14) around the proximal ring (16), and the distal face (16B) sits on the cutaneous surface of the abdominal wall (40). In the deployed position the proximal and distal rings (12, 16) are substantially aligned axially. The proximal ring (16) is rollable in the outward directions (as shown by the arrows) to shorten the sleeve (14) and in the inward direction to lengthen the sleeve (14), or vice versa. For the purposes of illustration, the sleeve (14) is depicted with an exaggerate thickness. Ordinarily in the deployed state the sleeve (14) would be wound many times around the proximal ring. The shortening of the sleeve (14) pulls the sleeve (14) taut against the incised wound defining an access passage. As one with ordinary skill in the art will recognize, surgical procedures can be performed through the incision and the sleeve (14) protects the incised wound from infection and contamination. In addition, the taut sleeve (14) tends to pull the incised wound open thus functioning as a wound retractor. As demonstrated in this example, more retraction is possible by rolling the proximal ring (16) outward, while less retraction is possible by rolling the proximal ring (16) inward. The hand access port (20) in the present embodiment includes a resilient pad (22) having a central aperture (26). The hand access port (20) may also include rigid features (not shown in the figure), including without limitation ribs, rings, or the like. In use the aperture (26) will stretch open to receive and seal against a surgeon's arm. A surgeon's hand will typically be lubricated to facilitate ingress and egress. The aperture (26) can take a variety of different shapes and forms including without limitation two axially offset normal slits. The aperture (26) in this 4 example is self-closing in the absence of a surgeon's arm. The pad (22) is this embodiment is formed from an open or closed-cell foam, made with neoprene, polyethylene, or the like, and may be encapsulated in a substantially gas impermeable membrane such as silicone, polyisoprene, polyurethane, or the like. In an alternative embodiment, the pad (22) can be made from a gel material. Gel materials are known in the art and typically have a low durometer, high elongation, and good tear strength. In one example, a gel material may have an ultimate elongation less than about 1000 percent and a durometer not less than about 5 Shore A. In another example, the gel material may have an ultimate elongation greater than about 1000 percent and a durometer less than about 5 Shore A, which is sometimes referred to as an "ultragel." In an alternative embodiment, the hand port (20) takes the form of an iris valve. A cinch (28) is associated with the hand access port (20). In this example the cinch is a flexible loop of cord, string, wire, band, or the like; however, other types of cinches are also contemplated. In one embodiment the cinch (28) is a resilient structure, such as an elastomer; however, relatively inelastic structures could also be employed. By tightening the cinch (20), the loop closes to attach the hand access port (20) to the wound protector (10). By loosening the since (20), the loop may open to remove hand access port (20) from the wound protector (10). A latch (29) is connected to the cinch (28) to hold the cinch in its tightened state. As shown in this example, the latch (28) includes a spring biased plunger mechanism to selectively grasp and release the cinch (28); however, other types of latches are also contemplated. As shown in Fig. 4, the hand access port (20) is attached to the proximal ring (16) of the wound protector (10). The flexible pad (22) includes a distal extension portion (22A) circumscribing the lateral face (16D) and a medial lip portion (22B) overlapping the distal face (16B). The cinch (28) is associated with in the distal extension portion (22A). As shown in Fig. 4, the cinch (24) is in its loosened state and substantially axially aligned with the recess in the lateral face (16D). As shown in Fig. 5, the cinch (28) is in its tightened state and engages the distal extension portion (22A) with the recess in the lateral face (16D). Fig. 6 illustrates a variation where the cinch (28) is associated with the medial lip portion (22B) so when tightened engages the medial lip portion (22B) with the distal face (16B) of the proximal ring (16). In such engaged positions the hand access port (20) is attached to the proximal ring (16) of the wound protector (10). 5 Preferably, the devices described above will be processed before surgery. First, a new or used device is obtained and if necessary cleaned. The device can then be sterilized. In one sterilization technique the access device is placed in a closed and sealed container, such as a plastic or TYVEK bag. Optionally, the device can be bundled in the container as a kit with other components, including one or more of the following: a wound protector, hand access port, a mounting ring for the wound protector, a tube of lubricant, a marker, an incision template or scale, an instruction sheet, and the like. The container and device, as well as any other components, are then placed in a field of radiation that can penetrate the container, such as gamma radiation, x-rays, or high-energy electrons. The radiation kills bacteria on the device and in the container. The sterilized device can then be stored in the sterile container. The sealed container keeps the device sterile until it is opened in the medical facility. Having shown and described various embodiments and examples of the present invention, further adaptations of the methods and devices described herein can be accomplished by appropriate modifications by one of ordinary skill in the art without departing from the scope of the present invention. Several of such potential modifications have been mentioned, and others will be apparent to those skilled in the art. For instance, the specific materials, dimensions, and the scale of drawings will be understood to be non-limiting examples. In addition, the foregoing teachings could be implemented for non-HALS procedures, such as reducing the scale to seal against instruments in traditional laparoscopic procedures. Accordingly, the scope of the present invention should be considered in terms of the following claims and is understood not to be limited to the details of structure, materials, or acts shown and described in the specification and drawings. 6