Patent Application
20110021877
1. Technical Field
The present disclosure relates generally to ports for use in minimally invasive surgical procedures, such as endoscopic and/or laparoscopic procedures, and more particularly, relates to an access port and an associated introducer to assist in deploying the port within a tissue tract of a patient.
2. Description of Related Art
Minimally invasive surgery is a type of surgery performed through one or more small incisions in a patient's body, usually less than an inch in diameter. Some potential advantages of minimal invasive surgery is that patients have less trauma to the body, lose less blood, have smaller surgical scars, and need less pain medication.
During a typical minimally invasive procedure, surgical objects, such as surgical access devices, e.g., trocar and cannula assemblies, or endoscopes, are inserted into the patient's body through the incision in tissue. In general, prior to the introduction of the surgical object into the patient's body, insufflation gas are used to enlarge the area surrounding the target surgical site to create a larger, more accessible work area. Accordingly, the maintenance of a substantially fluid-tight seal is desirable so as to prevent the escape of the insufflation gases and the deflation or collapse of the enlarged surgical site.
To this end, various ports with valves and seals are used during the course of minimally invasive procedures and are widely known in the art. However, a continuing need exists for an access port and associated introducer, which can position the access port with relative ease and with minor inconvenience for the surgeon.
Accordingly, a surgical portal and introducer assembly includes an introducer dimensioned for at least partial positioning within a tissue tract, and having a longitudinal introducer channel extending therethrough and a portal positionable within the longitudinal channel of the introducer. The introducer defines leading and trailing ends, and further has a frangible segment adapted to separate to expose the introducer channel. The portal has at least one longitudinal port for passage of a surgical object. The portal comprises a compressible material and is adapted to transition from a first expanded condition to a second compressed condition upon advancement through the longitudinal channel of the introducer to facilitate passage through the introducer whereby, upon separating of the frangible segment, the portal is released from the longitudinal channel to transition toward the first expanded condition to be generally secured within the tissue tract.
The frangible segment may include a tear line defined along the wall of the introducer. A tether may be secured to the introducer adjacent the tear line with the tether being manipulated to cause tearing along the tear line. The introducer may define a generally tapered configuration where an internal dimension of the longitudinal introducer channel generally decreases from the trailing end thereof to the leading end thereof.
The portal may define leading and trailing ends. The at least one longitudinal port may extend between the leading and trailing ends and is adapted for reception of an object whereby compressible material defining the at least one port is adapted to deform to establish a substantial sealed relation with the object. The portal may include a plurality of longitudinal ports. The portal may comprise one of a foam material or a gel material.
The above and other aspects, features, and advantages of the present disclosure will become more apparent in light of the following detailed description when taken in conjunction with the accompanying drawings in which:
Particular embodiments of the present disclosure will be described herein with reference to the accompanying drawings. As shown in the drawings and as described throughout the following description, and as is traditional when referring to relative positioning on an object, the term “proximal” or “trailing” refers to the end of the apparatus that is closer to the user and the term “distal” or “leading” refers to the end of the apparatus that is further from the user. In the following description, well-known functions or constructions are not described in detail to avoid obscuring the present disclosure in unnecessary detail.
One type of minimal invasive surgery described herein is referred to as a single-incision laparoscopic surgery (SILS). SILS is an advanced minimally invasive surgical procedure, which would permit a surgeon to operate through a single entry point, typically the patient's navel. The disclosed SILS procedure involves insufflating the body cavity and positioning a portal member within, e.g., the navel of the patient. Instruments including an endoscope and additional instruments such as graspers, staplers, forceps or the like may be introduced within the portal member to carry out the surgical procedure.
The port assembly in the SILS procedure may be introduced into an incision with a Kelly clamp. However, the Kelly clamp may limit the surgeon's ability to properly place a SILS port due to the limited length of the Kelly clamp's arm and handle. Furthermore, visibility may become an issue due to the presence of the clamp and the surgeon's hand holding the clamp. Removal of the Kelly clamp subsequent to placement of the port may also present undesired obstacles.
Referring now to the drawings, in which like reference numerals identify identical or substantially similar parts throughout the several views,
With reference to
Introducer member 104 includes a frangible tear segment or line 122 extending along the wall of the introducer member 102. Frangible tear segment 122 may include a perforated or score line or may incorporate a weakened section in the wall of introducer member 104. Introducer member 104 is adapted to tear along the tear line 122 to permit removal of the introducer member 104 subsequent to insertion of portal member 102 within the tissue tract “T”. Frangible tear segment 122 is oriented along a wall of the introducer member 104 between the proximal end 116 and the distal leading end 118. Introducer member 104 may further include slit 124 that is defined along the wall of the introducer member 104. Slit 124 is dimensioned to permit insufflation conduit 114 of the portal member 102 to pass therethrough as the portal member 102 is advanced through introducer member 104.
A tether 126 may be attached adjacent frangible segment or line 122 and extending toward distal leading end 118 of introducer member 104. Tether 126 may be made of a material, such as, wire, suture, or shape-memory alloy. Tether 126 is adapted to separate the wall of the introducer 104 along the frangible tear line 122 as the tether 126 is selectively pulled in a proximal trailing direction.
In embodiments of the present disclosure, surgical portal and introducer 100 may come preassembled with portal member 102 disposed within introducer member 104. In the alternative, portal member 102 may be positioned within introducer member 104 at the surgical theatre or site.
A method of introducing and deploying portal member 102 includes positioning leading or distal end 118 of introducer member 104 within the tissue tract “T” and advancing the leading end 118 to a predetermined depth. It is envisioned that the introducer member 104 may be made from a translucent-type material such that the clinician may monitor the depth the introducer/portal combination is being deployed within a tissue tract “T”. Thereafter, portal member 102 is positioned within proximal or trailing end 116 of introducer member 104 (if not preassembled as hereinabove discussed). Upon insertion, portal member 102 compresses to fit within the inner boundary of introducer channel 120 of introducer member 104. Portal member 102 is advanced relative to tissue tract “T” by either advancing the portal member 102 within introducer member 104 or advancing the introducer member 104 further into the tract “T”. During advancement, insufflation conduit 114 of portal member 102 may traverse slit 124 in the wall of introducer member 104. Once portal member 102 is located within the tissue tract “T”, e.g., with leading and trailing ends 118, 116 of the portal member 102 on opposed sides of the body wall (e.g., the abdominal cavity wall), introducer member 104 is removed by pulling tether in a general proximal direction or radial outward direction relative to longitudinal axis “m” to effect tearing of the introducer member 104 along frangible segment 122. Introducer member 104 is removed and portal member 102 expands toward its normal expanded condition in sealed engagement with the tissue defining the tissue tract.
In another embodiment illustrated in
While several embodiments of the disclosure have been shown in the drawings and/or discussed herein, it is not intended that the disclosure be limited thereto, as it is intended that the disclosure be as broad in scope as the art will allow and that the specification be read likewise. Therefore, the above description should not be construed as limiting, but merely as exemplifications of particular embodiments. Those skilled in the art will envision other modifications within the scope and spirit of the claims appended hereto.
The present application claims the benefit of and priority to U.S. Provisional Application Ser. No. 61/228,204 filed on Jul. 24, 2009, the entire contents of which are incorporated herein by reference.
| Number | Date | Country | |
|---|---|---|---|
| 61228204 | Jul 2009 | US |
