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US-12616551-B2 - Mechanism for retaining a marker

US12616551B2US 12616551 B2US12616551 B2US 12616551B2US-12616551-B2

Abstract

A device, and methods for using said device, for inserting a marker into a patient's body. The device may comprise a retention mechanism to hold the device in an first, undeployed, state. The device may be inserted into a patient's body in the first state, transitioned by the user into a second state wherein the retention mechanism is overcome, and then transition the device into a third state to deliver a marker to a precise location. The device may then be removed from the patient's body.

Inventors

  • Kenneth Sykes
  • Steven Weir
  • Emilio Aguilar
  • RICHARD P. JENKINS
  • Jim Mottola
  • Michael Dean Haslam

Assignees

  • MERIT MEDICAL SYSTEMS, INC.

Dates

Publication Date
20260505
Application Date
20230711

Claims (15)

  1. 1 . A system for implanting a marker in a patient's body, comprising: a cannula; a marker within the cannula; a stylet configured to eject the marker from the cannula; and an indented bridge defined by the cannula configured to engage with and retain the marker within the cannula, wherein the indented bridge is disposed between two slots in the cannula and a portion of the indented bridge is bent radially inward, and wherein a distal portion and a proximal portion of the indented bridge are secured to the cannula.
  2. 2 . The system of claim 1 , wherein the marker comprises a proximal antenna and a distal antenna.
  3. 3 . The system of claim 1 , wherein the indented bridge of the cannula constricts an inner diameter of the cannula.
  4. 4 . The system of claim 1 , wherein the indented bridge is bent radially inwards a distance of 0.003 to 0.005 inches.
  5. 5 . The system of claim 1 , wherein the indented bridge comprises a flat lowered portion between the distal portion and the proximal portion of the indented bridge.
  6. 6 . The system of claim 1 , wherein the cannula further comprises a deformity that comprises a point deformation on an cannula inner wall.
  7. 7 . The system of claim 1 , wherein the stylet comprises a deformity.
  8. 8 . The system of claim 7 , wherein the deformity comprises a bend in the stylet configured to engage with an antenna of the marker.
  9. 9 . The system of claim 7 , wherein the deformity comprises a channel in the stylet.
  10. 10 . The system of claim 9 , wherein the channel is configured to receive an antenna of the marker.
  11. 11 . The system of claim 9 , wherein the channel is configured to provide a force on an antenna of the marker.
  12. 12 . The system of claim 7 , wherein the deformity comprises a cavity in the stylet.
  13. 13 . The system of claim 12 , wherein the cavity is configured to receive an antenna of the marker.
  14. 14 . The system of claim 13 , wherein the antenna comprises a bend.
  15. 15 . The system of claim 1 , wherein the marker comprises a deformity.

Description

RELATED CASES This application claims priority to U.S. Provisional Application No. 63/368,186, filed on Jul. 12, 2022 and titled “MECHANISM FOR RETAINING A MARKER,” which is hereby incorporated by reference in its entirety. TECHNICAL FIELD The present disclosure relates generally to devices and methods for retaining a marker with a delivery system, for example in the field of tumor or cancer localization. More particularly, some embodiments relate to lumpectomy, and localization in preparation for lesion removal. BRIEF DESCRIPTION OF THE DRAWINGS The written disclosure herein describes illustrative embodiments that are non-limiting and non-exhaustive. Reference is made to certain of such illustrative embodiments that are depicted in the figures, in which: FIG. 1 is a first exemplary embodiment of a marker retention device. FIG. 2A is a side view of a second exemplary embodiment of a marker retention device. FIG. 2B is a top view of the second exemplary embodiment of a marker retention device. FIG. 3 is a third exemplary embodiment of a marker retention device. FIG. 4 is a fourth exemplary embodiment of a marker retention device. FIG. 5 is a fifth exemplary embodiment of a marker retention device. FIG. 6 a sixth exemplary embodiment of a marker retention device. FIG. 7 is a seventh exemplary embodiment of a marker retention device. FIG. 8A is a perspective view of an eighth exemplary embodiment of a trigger of the marker inserter device. FIG. 8B is a cutaway view of the eighth exemplary embodiment of a trigger of the marker inserter device. FIG. 9 is a ninth exemplary embodiment of a stylet of the marker inserter device. DETAILED DESCRIPTION Before a biopsy or surgical procedure to remove a lesion within a breast, such as a lumpectomy procedure, the location of the lesion must be identified. For example, mammography or ultrasound imaging may be used to identify and/or confirm the location of the lesion before a procedure. The resulting images may be used by a surgeon during a subsequent procedure to identify the location of the lesion and guide the surgeon, e.g., during dissection to access and/or remove the lesion. Such images may be two dimensional, and therefore provide limited guidance for localization of the lesion. To facilitate localization in three dimensions, a marker may be placed with an insertion device to provide localization information during a procedure. For example, an insertion device for a marker may be introduced through a breast into a lesion, and in conjunction with mammography or any other standard imaging technique, a marker may be deployed from the insertion device into the lesion. The insertion device may then be withdrawn, and the position of the marker may be confirmed using mammography. During a subsequent surgical procedure, a hand-held probe may be placed over the breast to identify a location overlying the marker. An incision may be made and the probe may be used to guide excision of the marker and lesion. Markers and placement devices within the scope of this disclosure may be used for locating lesions and placing markers at any location within the body. Specific examples given herein, such as placement of a marker within breast tissue to identify a breast cancer lesion, may be analogized to placement within other areas of the body. A known problem with conventional insertion devices is that the insertion device, through a variety of factors, may be prematurely and/or accidently actuated, resulting in premature or partial delivery including possible loss of precision in placement of the marker. For example, the device may be accidentally actuated during packaging, transportation, or preparation for use, resulting in partial or complete premature deployment. Accidental actuation may further be due to a variety of factors, including but not limited to: the design of the actuation mechanism and its handling during packaging, delivery, and pre-operation preparation, the robustness and durability of the actuation mechanism, ease of use provided to the user in deploying the marker, or any combination of these and other additional factors. Accordingly, there is a need for apparatus and methods for accurately and intuitively placing a marker or other tissue structures in advance of and/or during surgical, diagnostic, while maintaining the integrity and security of the deployment mechanism prior to its usage. In some embodiments, devices within the scope of this disclosure may be broadly directed to such a system and methods for inserting structures, including a marker, into the body of a patient. The components of the embodiments as generally described and illustrated in the figures herein can be arranged and designed in a wide variety of different configurations. Thus, the following more detailed description of various embodiments, as represented in the figures, is not intended to limit the scope of the present disclosure, but is merely representative of various embodiments. While v