US 12,402,978 B2
Marker delivery device with push rod having actuation features
Andrew P. Nock, Dayton, OH (US)
Assigned to Devicor Medical Products, Inc., Cincinnati, OH (US)
Filed by Devicor Medical Products, Inc., Cincinnati, OH (US)
Filed on Jul. 13, 2022, as Appl. No. 17/863,813.
Application 17/863,813 is a continuation of application No. PCT/US2021/013352, filed on Jan. 14, 2021.
Claims priority of provisional application 62/961,367, filed on Jan. 15, 2020.
Prior Publication US 2022/0346907 A1, Nov. 3, 2022
Int. Cl. A61B 90/00 (2016.01)
CPC A61B 90/39 (2016.02) [A61B 2090/3987 (2016.02)] 19 Claims
OG exemplary drawing
 
1. A marker delivery device comprising:
(a) a housing;
(b) a flexible push rod, the flexible push rod including a first transverse drive surface and a deployer tip, the deployer tip being configured to receive a biopsy site maker;
(c) a first wheel having a second transverse drive surface, the first transverse drive surface being configured to be driven by the second transverse drive surface to translate the flexible push rod distally; and
(d) a spring in communication with the first wheel, the spring including a helical or spiral portion centered around the rotational axis of the first wheel, the spring further including a first end and a second end, the first end being coupled to one or more components in a fixed position relative to the first wheel, the second end being coupled to the first wheel, and the spring further having a resilient bias configured to rotate the first wheel and thereby translate the flexible push rod in a coordinated linear and rotational movement through a cannula to deploy the marker.