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Surgical access deviceRelated Patent Categories: Surgery, Instruments, Internal Pressure Applicator (e.g., Dilator)Surgical access device description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20050261720, Surgical access device. Brief Patent Description - Full Patent Description - Patent Application Claims
[0001] This application is a continuation of application Ser. No. 09/936,841, filed Mar. 1, 2002, which is a national stage of application No. PCT/IE00/00033, filed Mar. 20, 2000. BACKGROUND OF THE INVENTION [0002] 1. Field of the Invention [0003] The present invention relates to a surgical device for use in minimally invasive surgery of the type using patient pneumoperitoneum and an access port. [0004] 2. Description of the Related Art [0005] Minimally invasive surgery of this type is carried out having introduced gas into a patient's body cavity through an incision and sealed the incision with an access port. The access port enables laproscopic and hand or instrument assisted surgery to be performed. [0006] A sleeve forming such a port is shown in WO-A-95/07056 entitled "Apparatus for use in surgery". The access port sleeve shown is used to create a controlled pressurized environment within the sleeve while allowing a surgeon's arm to pass through the sleeve. During surgery, gas is pumped into the patient's body cavity where the surgery is to be performed and the sleeve prevents gas escaping while allowing the surgeon to operate using minimally invasive surgery techniques. The application shows a sleeve having a flange at a distal end provided with adhesive for adhering the device to a patient's body or alternatively a mounting ring to surround the incision in a patient's body. While providing a suitable apparatus for performing such surgery the device described suffers from the principle disadvantage that in use, the sleeve protrudes upwardly from the patient and may interfere with the activities of the surgery team. Additionally, the sleeve must be sealed against the surgeon's upper forearm by clamping the device to the arm sufficiently tightly to avoid gas leak around the area of the seal. This presents the surgeon with a problem both in sealing the sleeve and in subsequent mobility. [0007] A further problem associated with the use of sleeves of the kind described is that a phenomenon known as "tenting" may occur. "Tenting" means that when the sleeve is adhered to the patient's skin or to a surgical drape and gas is induced into the patient's abdominal cavity, there is a tendency for the sleeve to fill with gas and to pull away from the patient. [0008] U.S. Pat. No. 5,514,133 discloses an endoscopic surgical apparatus for enabling a surgeon to access directly the surgical site during an endoscopic procedure. This apparatus includes an opening extending longitudinally through the apparatus and prior art is configured and dimensioned to receive a hand therethrough. A first plate engages against the outer surface of the abdominal wall. A second plate is spaced from the first plate and is movable between a first position and a second position wherein the second plate is in close cooperative alignment with the inner surface of the abdominal wall. An adjustment member is mounted to the second plate and actuates movement of the second plate between its first position and its second position. A first sealing member inhibits the flow of gas through said opening and is formed by a pair of overlapping seals. A flexible sleeve extends between the first and second plates and adjusts in length to accommodate various thicknesses of the abdominal wall. The sleeve also creates an access port for the passage of objects through the abdominal wall. SUMMARY OF THE INVENTION [0009] A surgical device for use in minimally invasive surgery of the type using an inflated body cavity accessible to a surgeon through an access port, defined by the device, surrounding an incision in a patient's body, the device having: body cavity engagement means for insertion into the incision to locate the device in position; fixing means for attaching the device to a patients skin, the fixing means including a proximal ring; a sleeve connectable between the body cavity engagement means and the fixing means wherein the sleeve is adjustable by the positioning of the proximal ring so that the positioning of the proximal ring retracts the sleeve to define an access port and create a seal between the incision and sleeve; and sealing means, at least one of mounted on the sleeve and operating on the sleeve, to prevent substantial leakage of gas from the body cavity on inflation when in an inoperative position and formed to mould about a substantial portion of a surgeon's hand or surgical instrument on insertion in an operating position. Preferably, the body cavity engagement means is provided by a distal ring formed for insertion into the incision. [0010] In one arrangement, the distal ring has an associated self-sealing valve. The fixing means (proximal ring) incorporates adjustment means for modifying the length of the sleeve. This ensures that the fixing means, distal ring and valves are brought into close contact with the abdominal wall ensuring a good seal is maintained and that the device is firmly mounted in position. BRIEF DESCRIPTION OF THE DRAWINGS [0011] FIG. 1 is a front view of a surgical device in accordance with the invention; [0012] FIG. 2 is a section view in the direction of the arrows A-A of the surgical device of FIG. 1; [0013] FIG. 3 is a view of the self sealing valve forming part of a surgical device in accordance with the invention in an inoperative position; [0014] FIG. 4 is a view of portion of the valve shown in FIG. 3 in an operating position; [0015] FIG. 5 is a view of a another alternative self sealing valve forming part of a surgical device in accordance with the invention in an inoperative position; [0016] FIG. 6 is a view of portion of the valve shown in FIG. 5 in an operating position; and [0017] FIG. 7 is a front view of another embodiment of the surgical device of the present invention with an external proximal valve instead of an internal distal valve. DETAILED DESCRIPTION OF THE INVENTION [0018] Referring to the drawings, and initially to FIGS. 1-2 there is illustrated a surgical device according to the invention, indicated generally by the reference numeral 1. The surgical device 1 is formed for use in minimally invasive surgery of the type using an inflated body cavity indicated generally by the reference numeral 2. The cavity 2 is accessible to a surgeon through an access port, defined by a sleeve 4, passing through an incision in a patient's abdominal wall 3. [0019] In more detail, the device 1 has a body cavity engagement means provided by a distal ring 5 for insertion into the incision to locate the device 1 in position. The distal ring 5 prevents the device from becoming detached from the body inadvertently and has an associated sealing means in the form of a self-sealing valve 18 for sealing the sleeve 4 when not in use. The device 1 is held in position on the patient's skin outside the body by a fixing means 10 provided in this case by a proximal ring 6. The distal ring 5 and proximal ring 6 ensure that the device 1 is securely fixed in position, both rings 5,6 surround the incision and the sleeve 4 passes through the incision connecting the rings 5 and 6. The proximal ring 6 has adjustment means 12 provided by being rotatably mounted on the skin to modify the length of the sleeve 4. This ensures that the fixing means 10 and the distal ring 5 are brought into close contact with the abdominal wall 3, thereby ensuring a good seal is maintained and that the device 1 is firmly mounted in position. [0020] The proximal ring 6 may have a connector ring 7 for receiving additional seals to prevent loss of pressure from the cavity 2. The connector ring 7 may also be used for holding or guiding medical instruments into position over, through or in the incision. Continue reading about Surgical access device... Full patent description for Surgical access device Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Surgical access device patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. Start now! - Receive info on patent apps like Surgical access device or other areas of interest. ### Previous Patent Application: Catheter and method of its use Next Patent Application: Balloon trepan Industry Class: Surgery ### FreshPatents.com Support Thank you for viewing the Surgical access device patent info. IP-related news and info Results in 0.11601 seconds Other interesting Feshpatents.com categories: Canon USA , Celera Genomics , Cephalon, Inc. , Cingular Wireless , Clorox , Colgate-Palmolive , Corning , Cymer , pbckp |
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