Surgery – Instruments – Surgical mesh – connector – clip – clamp or band
Reexamination Certificate
1999-02-11
2001-08-28
Jackson, Gary (Department: 3731)
Surgery
Instruments
Surgical mesh, connector, clip, clamp or band
C602S044000, C602S058000
Reexamination Certificate
active
06280453
ABSTRACT:
TECHNICAL FIELD
The present invention generally relates to a surgically implantable patch for use in repairing a hernia of other aperture in a human body. More particularly, the present invention relates to a hernia repair patch having a filament to stiffen and maintain the patch in a planar configuration.
BACKGROUND OF THE INVENTION
Surgically implantable mesh patches for the repair of inguinal and other abdominal wall hernias, which are intended for permanent placement within a patient's body space, have been provided and used previously. Tension free surgical repairs of hernias have been developed using synthetic mesh materials to bridge and to patch hernia defects. These repairs resulted in both a decrease in the recurrence rate as well as a decrease in the amount of a patient's post operative discomfort. Patients undergoing these more advanced procedures were able and are able to resume their normal activities sooner.
Some of the earlier techniques are somewhat complicated. Several use a plug or a locating member to fit within the hernia defect itself. Also, many of the earlier techniques were designed specifically for use in laparoscopic repair of hernias. Moreover, many of the prior inventions required suturing to the patient's body tissue. Although these medical advances are acknowledged for their usefulness and success, a need remains for improvements in the surgical repair of hernias.
DISCLOSURE OF INVENTION
A hernia mesh patch for use in the surgical repair of a patient's inguinal, or other abdominal wall hernias, is disclosed for permanent placement within a patient's body space. The hernia mesh patch of the invention has top and bottom layers of an inert, synthetic mesh, preferably polypropylene mesh, secured to each other with a seam. The seam is preferably formed by an ultrasonic weld that surrounds a stiffener or spring.
To serve a spring function, an inert monofilament fiber, arranged in a partial oval, ovoid, loop, or ring configuration, is affixed between a top layer and a bottom layer of the hernia mesh patch to keep the hernia mesh patch expanded under tension in a planar configuration. An opening is formed in one of the layers for allowing a surgeon to insert a finger. The opening allows the surgeon to properly position the patch. A border on at least one of the layers extends outward past the seam. The border preferably has slits, which form tabs that fill uneven voids in the patient's tissue.
Without the need for general anesthesia, nor expensive laparoscopic instrumentation, a surgeon makes a small incision in the patient when repairing an inguinal hernia. The small incision is preferably approximately three centimeters long, arranged obliquely, and located approximately two to three centimeters above the internal ring location of the inguinal hernia. Through this small incision, using the muscle splitting technique, the surgeon performs a dissection deep into the patient's preperitoneal space to create a pocket in the space into which the hernia mesh patch is to be inserted.
Thereafter, the surgeon uses his or her fingers to fold and compact the hernia mesh patch and direct the patch through the incision and into the patient's preperitoneal space, where the patch unfolds and expands into its planar configuration, creating a trampoline effect. The surgeon then places one of his or her fingers through the opening between the top and bottom layers of the hernia mesh patch to conveniently and accurately move the hernia mesh patch to cover the defect in the thick reinforcing lining of a patient's abdominal cavity. Thereafter, the surgeon withdraws his or her finger and secures the incision with stitches.
Soon after surgery, the patient's body reacts to the mesh of the hernia mesh patch. In a short time the mesh becomes stuck, thereby keeping the hernia mesh patch in place. Thereafter, the patient's scar tissue grows into the mesh over a period of time, typically between thirty and sixty days, to permanently fix the hernia mesh patch in its intended position over the repaired area where the hernia was located.
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Biggers Keith D.
Inman J. Douglas
Kugel Robert D.
Bard Asdi Inc.
Jackson Gary
Wolf Greenfield & Sacks P.C.
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