Patent ID: 11957889
Assignee: RESNENT, LLC
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 12:
13. A retractable syringe device assembly, comprising:
a syringe including a reservoir for storing fluid and a distal end for delivering the fluid;
an injection needle to directly couple to the distal end of the syringe and inject the fluid at an anatomical structure;
a handle comprising a handgrip, and a hollow body for inserting the syringe through an opening of the handle such that the reservoir and the distal end longitudinally extend through the hollow body, the hollow body including a syringe actuator that holds the syringe in the hollow body and moves the syringe, including the reservoir and the distal end, between a distal position in the hollow body and a proximal position in the hollow body, wherein the syringe actuator is configured to hold the syringe in place in the distal position, the syringe actuator comprising:
a cam; and
a pawl, the pawl configured to be engaged with the cam by pushing the syringe forward a first time in the hollow body until the syringe is in the distal position, and the pawl configured to be disengaged from the cam by pushing the syringe forward a second time in the hollow body while the syringe is in the distal position, thereby causing the syringe to retract toward the proximal position; and

a surgical elevator distally extending from the handle, the surgical elevator including:
a blunt curved tip that is rigid or semi-rigid, the blunt curved tip configured to displace the anatomical structure to facilitate visualization of an injection site by an endoscope;
a channel extending through the surgical elevator, the channel configured to receive the injection needle, wherein moving the syringe, including the reservoir and the distal end of the syringe, from the proximal position to the distal position in the hollow body causes a distal end of the injection needle to distally extend to outside the channel, and moving the syringe, including the reservoir and the distal end of the syringe, from the distal position to the proximal position in the hollow body causes the distal end of the injection needle to be retracted into the channel; and
a rotatable dial that rotates the surgical elevator relative to the handle.