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MRI detectable obturator

The MRI-detectable obturator with a sealed end and incorporated contrast agent addresses the challenges of tip localization and blood backflow in MRI-guided biopsies, ensuring precise and safe tissue marking and treatment delivery.

Inactive Publication Date: 2013-05-16
SENORX INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

Enables accurate tip localization during MRI-guided procedures and prevents blood clotting by providing a clear image signature and minimizing fluid entry, enhancing the precision and safety of tissue marking and treatment delivery.

Problems solved by technology

This backflow of blood into the obturator creates a risk of blood clotting.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027]The present invention is directed to devices and methods for marking an intracorporeal site within a patient's body, and particularly to an obturator having an MRI detectable mass in the distal shaft portion thereof for marking the intracorporeal site.

[0028]FIGS. 1 A-C illustrate an embodiment of an obturator 10 having an elongated shaft 11, a proximal end 12, a handle 13 on the proximal end, a closed distal end 14 and a distal shaft portion 15 with an MRI detectable mass 16. The MRI detectable mass may be in a solid, semi-solid, e.g. a gel or a slurry, or liquid state. Non-flowable gels are presently preferred. As shown in FIGS. 1B and 1C, the distal shaft portion 15 has an inner lumen 17 that is filled with a gel 18 having an MRI detectable material incorporated therein. An alternative embodiment is shown in FIG. 1D wherein the distal shaft portion 15 is solid 19 and has an MRI detectable material incorporated therein. FIG. 1E depicts yet another alternative embodiment in wh...

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PUM

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Abstract

An obturator for marking an intracorporeal site includes an elongated shaft having an inner lumen, a proximal end, and a substantially closed distal end, the substantially closed distal end being formed of a penetrable membrane. A stylet has an MRI detectable distal shaft portion configured for removable insertion into the inner lumen of the elongated shaft to a location proximal to the penetrable membrane. The MRI detectable distal shaft portion is configured to not interfere with magnetic resonance imaging of tissue proximate thereto.

Description

RELATED APPLICATIONS[0001]This application is a continuation of application Ser. No. 11 / 985,997, filed Nov. 19, 2007, which is a continuation-in-part of application Ser. No. 11 / 978,782 filed Oct. 30, 2007, application Ser. No. 11 / 980,302, filed Oct. 30, 2007, and relates to provisional application Ser. No. 60 / 860,887, filed Nov. 24, 2006, and provisional application Ser. No. 60 / 872,020, filed Nov. 30, 2006, all of which are incorporated herein by reference and from which priority is claimed.FIELD OF THE INVENTION[0002]This invention relates generally to the fields of medical treatment devices and methods. In particular, the invention relates to devices and methods for marking a body site, such as a site from which cancerous, pre-cancerous, or other tissue has been or will be removed.BACKGROUND OF THE INVENTION[0003]In diagnosing and treating certain medical conditions, it is often desirable to perform a biopsy, in which a specimen or sample of tissue is removed for pathological exam...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A61B17/32
CPCA61B17/3417A61B17/3496A61B19/54A61B17/32A61B2019/5454A61B2019/5487A61B2019/5408A61B17/3431A61B17/3468A61B17/3498A61B2017/00477A61B2017/00911A61B2090/062A61B90/39A61B2090/3954A61B2090/3987A61B2090/3908
Owner SENORX INC