US 2026/0060725 A1 · TREATMENT DEVICE AND SCREW

Abstract

This invention relates to a treatment device suitable for combined operative procedure of vertebroplasty and pediculoplasty. A treatment device includes a cylindrical driver capable of driving a screw into bone, an inner sleeve capable of being inserted into the driver, and a guide pin capable of being inserted into the inner sleeve, and is configured as follows. The screw includes on an outer wall (outer circumference) a thread that can tap into bone or cement, and a through hole that allows the inner sleeve to pass from a head to a tip. The driver can fit onto the head of the screw and when moved along the central axis and be joined to the screw, so as to transmit torque about the central axis to the screw. The inner sleeve includes a notch which protrudes, when the inner sleeve is inserted from the distal end of the driver in a state in which the screw and the driver are joined together, protrudes more proximally than a tip of the screw, preventing removal of the screw.

Claims11

Dependent claims

1-9. (canceled)

A treatment device comprising:

a screw;
a cylindrical driver configured to drive the screw into bone;
and
an inner sleeve configured for insertion into the driver, wherein:
the screw includes on an outer wall a thread that can tap into bone, and a through hole that allows the inner sleeve to pass from a head to a tip of the screw along a central axis;
the driver includes a through hole that allows the inner sleeve to pass from a head to a tip of the driver along a central axis, and is configured to fit onto the head of the screw and when moved along the central axis be joined to the screw to transmit torque about the central axis to the screw;
the inner sleeve includes a tongue that is elastic at a proximal end of the inner sleeve, the tongue having a lateral protrusion;
the inner sleeve is configured to be able to move through the through hole of the screw along the central axis with the tongue bent toward the central axis;
and
the inner sleeve is configured such that the protrusion contacts to the tip of the screw when the inner sleeve is inserted into the through hole of the driver and connected with the driver at a distal end of the driver.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application

19/384,152Filed 10 Nov 2025

Published

5 Mar 2026

Term ends

Not estimatedThe source records don’t support an estimate.

Classification10 codes

A61B 17/7098
Stabilisers comprising fluid filler in an implant, e.g. balloon; devices for inserting or filling such implants: wherein the implant is permeable…
A61B 17/86
Fasteners therefor or fasteners being internal fixation devices: pins or screws or threaded wires; nuts therefor
A61B 17/8635
Shanks, i.e. parts contacting bone tissue: tips of screws
A61B 17/864
Pins or screws or threaded wires; nuts therefor: hollow, e.g. with socket or cannulated

Treatment device and screw

Life of this patent

Treatment device and screw

Life of this patent

Abstract

Claims11