Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Reexamination Certificate
2000-03-31
2003-01-07
Nguyen, Anhtuan T. (Department: 3763)
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
C604S197000
Reexamination Certificate
active
06503228
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to a protective assembly to protect the access portal from adverse contact during surgical implantation of the device.
BACKGROUND OF THE INVENTION
An increasing number of medical procedures involve the permanent implantation of electrical and mechanical devices within an individual's body. The conveyance of power and electrical signals between implanted devices and external items of equipment necessitates the implantation of a coupler within an individual's skin. A percutaneous access device (PAD) is a typical conduit for the conveyance of electrical signals and pneumatic drive power between implanted mechanical devices and exterior equipment. Implanted devices in communication with external equipment by way of a PAD illustratively includes mechanical auxiliary ventricle (MAV), chronic ambulatory peritoneal dialysis, and cochlear stimulators.
To facilitate stability of the PAD structure within the skin, autologous cells of an individual are grown on neck surfaces of the PAD which are adjacent to an individual's epidermis following implantation. During a first surgical procedure, a skin incision is made by a trephine in order to correctly position and orient the PAD. During the course of implant surgery, the PAD is in contact with the incision edges as it is translated within the incision to attain proper orientation. In the course of contacting the incision edges, the autologous cells grown on the neck surfaces of the PAD are readily abraded and dislodged from the neck surfaces. As a result, current surgical procedures associated with PAD implantation do not fully realize the advantages associated with autologous cell culturing on the PAD neck surfaces prior to implantation.
Immediately following PAD implantation, a temporary plug is utilized to seal the PAD portal while granulation and cell growth occurs about the PAD neck surfaces to firmly secure the PAD within the skin. Typically, a temporary plug is required for about two to three weeks to keep the inner surfaces of the PAD free of contamination. Currently, a rubber stopper is utilized as a temporary plug. The rubber stopper is limited in its utility by having only a pressure fit along a limited contact surface to maintain the rubber stopper within the PAD portal. Thus, there exists a potential for the rubber stopper to become dislodged thereby exposing the inner PAD surfaces to contaminating effects of body fluid or air borne microbes. Thus, there remains a need for a protective assembly to protect the cell cultured surface during implantation and to temporarily shield a percutaneous access device from the environment without compromising the physical or biological barrier between the inner surfaces of a PAD.
SUMMARY OF THE INVENTION
A protective assembly for a protruding portal having an interior, a face, and a neck is described including a protective lid having a surface gapped from the portal face and neck and a lid seating pin extending into the interior of the portal and engaging the protective lid surface. The protective assembly is particularly well suited for protecting a percutaneous access device portal.
A protective assembly for a percutaneous access device includes a turret adapted to seat within the device, the turret having a base, an exterior wall and an inner wall terminating at an upper edge to form a cup, the turret base having a through hole therein. A screw selectively secures the turret to the percutaneous access device. A lid centering pin is adapted to fit within the cup, the pin having lateral dimensions such that the sidewalls are adjacent the inner wall of the turret upon fitting the pin into the cup, the top surface having at least one blind hole therein. A protective lid having a lip extending from a cover surface, the covering surface having an aperture aligned with at least one blind hole and the lid centering pin such that the lip surrounding the outer surface of the percutaneous access device forms a gap therewith. At least one screw engages at least one blind hole and the aperture to selectively secure the lid to the portal such that the cover surface contacts the upper edge of the turret or the top surface of the lid centering pin.
A method of protecting a percutaneous access device having an interior, a face, and a neck includes the steps of removably inserting a lid seating pin into the interior of the percutaneous access device and securing a protective lid to the lid seating pin so that the lid is gapped from the face and the neck of the percutaneous access device. A commercial package includes a lid seating pin adapted to fit within the interior of the percutaneous access device as well as a protective lid secured to the pin which forms a gapped cover over an exposed face and exterior of the percutaneous access device along with instructions for the use thereof as a temporary covering.
REFERENCES:
patent: 3694819 (1972-10-01), Meyer
patent: 3765032 (1973-10-01), Palma
patent: 3783868 (1974-01-01), Bokros
patent: 4025964 (1977-05-01), Owens
patent: 4321914 (1982-03-01), Begovac et al.
patent: 4344435 (1982-08-01), Aubin
patent: 4496349 (1985-01-01), Cosentino
patent: 4534761 (1985-08-01), Raible
patent: 4662890 (1987-05-01), Burton
patent: 4676802 (1987-06-01), Tofield et al.
patent: 4753656 (1988-06-01), Tofield et al.
patent: 5176662 (1993-01-01), Bartholomew et al.
patent: 5205286 (1993-04-01), Soukup et al.
patent: 5300086 (1994-04-01), Gory et al.
patent: 5423334 (1995-06-01), Jordan
patent: 5507303 (1996-04-01), Kuzma
patent: 5741298 (1998-04-01), MacLeod
patent: 5868699 (1999-02-01), Woodruff et al.
patent: 5873368 (1999-02-01), Sabin
patent: 5895351 (1999-04-01), Nottage et al.
patent: 5968011 (1999-10-01), Larsen et al.
Freed Paul
Kantrowitz Adrian
Li Jun
Taro George
L-Vad Technology, Inc.
Nguyen Anhtuan T.
Sirmons Kevin C.
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