Securement for a surgical site marker and deployment device for same
Inventors
Mark, Joseph L. • Nicoson, Zachary R.
Assignees
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Publication Number
US-9622822-B2
Publication Date
2017-04-18
Expiration Date
Abstract
A method of securing a biopsy marker within a biopsy site includes depositing a marker element within a biopsy site and fixing the marker element within the biopsy site by injecting a securing agent within the biopsy site. Delivery devices for delivering the securing agent to the biopsy site are also disclosed.
Core Innovation
The disclosed subject matter relates to securing a surgical site marker in a biopsy site by implanting the marker into the biopsy site and then deploying a securing agent that accelerates clotting to substantially limit migration of the marker from the biopsy site. A marker element is deployed from a delivery device into the biopsy site, and after deploying the marker, a securing agent is deployed into the biopsy site.
A delivery device includes an elongate body with a lumen extending between a proximal end and a distal end, and a filter element disposed in the lumen. The securing agent is located in the delivery device lumen, distal of the filter element, prior to deploying the securing agent. The filter element is semi-permeable such that fluid may pass through the filter element while the securing agent is substantially prevented from passing through the filter element.
Deployment devices described include use of a normally closed duckbill valve near the distal end, in which the valve prevents external substances from entering the lumen while allowing the securing agent to pass under fluid force. Alternative deployment concepts include forcing a fluid through the filter element to push material out through a distal opening, or applying a distal actuation force through the lumen to force the securing agent out through an opening at the distal end of the elongate body.
Claims Coverage
Independent claim clm-00001 defines a method of implanting a marker in a biopsy site using a delivery device with a semi-permeable filter element that permits fluid passage while substantially preventing passage of a clot-accelerating securing agent, with sequential deployment of the marker and then the securing agent. The independent claim includes 2 core inventive features.
Sequential marker deployment with clot-accelerating securing agent to limit migration
Deploying a marker from a delivery device into the biopsy site and, after deploying the marker, deploying a securing agent from the delivery device into the biopsy site, wherein the securing agent comprises a material that accelerates clotting to substantially limit migration of the marker from the biopsy site.
Semi-permeable filter element that permits fluid passage while preventing securing agent passage
A delivery device having an elongate body with a lumen and a filter element disposed in the lumen, wherein prior to deploying the securing agent the securing agent is located in the delivery device lumen distal of the filter element, and wherein the filter element is semi-permeable such that fluid may pass through the filter element while the securing agent is substantially prevented from passing through the filter element.
The claim coverage centers on implanting a marker in a biopsy site followed by deploying a clot-accelerating securing agent to substantially limit marker migration, while using a delivery device lumen containing a semi-permeable filter element that allows fluid passage but substantially prevents the securing agent from passing through the filter element.
Stated Advantages
Substantially limit migration of the marker from the biopsy site.
Documented Applications
Implanting a marker in a biopsy site by deploying the marker and then deploying a clot-accelerating securing agent using a delivery device with a semi-permeable filter element.
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