Post-operative surgical site wound treatment and method for device removal
Inventors
Patel, Vikas • Kleck, Christopher • Bowman, Brian • John, Tina • Paganelli, Jude
Assignees
University of Colorado Colorado Springs • Osteal Therapeutics Inc
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Publication Number
US-11400203-B2
Publication Date
2022-08-02
Expiration Date
Abstract
A device and method for treatment of post-operative surgical site wounds. Device includes an elongated hollow shaft that spans from the wound closure to the deep wound area, the internal end abutting a wound dressing and the external end connecting to a device that can provide negative-pressure suction and irrigation. Device providing one or more of irrigation, suction, and/or local antibiotic delivery to deep infections through a closed-wound. The method for removal includes narrowing a removal element relative to the long axis, collapsing the wound dressing; removing the wound dressing through the elongated shaft; and removing the device through a closed wound, avoiding a second removal surgery.
Core Innovation
The invention relates to a post-operative surgical site wound treatment device that includes an elongate shaft extending along a longitudinal axis. The distal portion of the elongate shaft has a distal end with a first inner diameter greater than a second inner diameter proximal to the distal end to form a flared internal end configured to guide a wound dressing into the elongate shaft during retraction.
The device is configured to be coupled to an external system providing any one of suction, delivery of an irrigating fluid, delivery of an antibiotic, or a combination thereof, to the wound through a first lumen of the elongate shaft. The overall arrangement supports post-operative deep wound treatment using the shaft and external system coupling to deliver or remove materials through the wound.
Documented embodiments describe wound dressing removal through the closed wound by collapsing and retracting the dressing into the shaft using a removable or collapsible removal element, such as a helical braid or a biaxial braid, with optional woven configurations encompassing or being woven into the dressing. Additional described refinements include an expanded distal end sized relative to the shaft and the use of a trailing end tether to enable axially pulled collapse and removal through the elongate shaft without a second surgery.
Claims Coverage
The document includes one independent claim (clm-00001). It is centered on a post-operative surgical site wound treatment device with a distal flared internal end that guides a retractable wound dressing into an elongate shaft, coupled to an external system providing suction and/or irrigating fluid and/or antibiotic through a first lumen. The dependent claims add further inventive features that refine the external system type, lumen separation, and dressing/removal structure.
Flared internal end configured to guide a retractable wound dressing
An elongate shaft having a distal portion where a distal end forms a flared internal end by having a first inner diameter greater than a second inner diameter, and a wound dressing configured to retract into the distal end, with the flared internal end configured to guide the wound dressing into the elongate shaft during retraction.
Coupling to an external system for suction and/or irrigating fluid and/or antibiotic via a first lumen
The device configured to be coupled to an external system providing any one of suction, delivery of an irrigating fluid, delivery of an antibiotic, or a combination thereof to the wound through a first lumen of the elongate shaft.
Negative pressure wound therapy external system
The device includes an external system comprising a negative pressure wound therapy (NPWT) device.
Separated lumens for suction versus irrigating fluid and/or antibiotic delivery
A device having first and second lumens, where the first lumen applies suction to a wound and the second lumen delivers the irrigating fluid, the antibiotic, or both to the wound.
Reticulated hydrophobic polyurethane foam wound dressing
A wound dressing made from a sterile, open cell reticulated, hydrophobic polyurethane foam.
Expanded distal end of a removal element sized relative to the shaft
A removal element with an expanded distal end whose diameter or width is greater than the second inner diameter of the elongate shaft.
Overall claim coverage centers on an elongate shaft with a distal flared internal end that guides a retracting wound dressing into the shaft, together with coupling to an external system delivering suction and/or irrigating fluid and/or antibiotic through a first lumen. Dependent refinements specify NPWT external coupling, separation of lumens for suction versus delivery, a specific foam dressing material, and a removal element with an expanded distal end sized relative to the shaft.
Stated Advantages
Avoiding a second surgery by enabling dressing removal through the closed wound.
Allows post-operative deep wound treatment by retracting and removing a wound dressing into the elongate shaft.
Documented Applications
Spinal wound placement and deep infection management using the post-operative wound treatment device.
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