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US 12,733,958 B2Granted
Implantable screw and methods for use
AssigneeRensselaer Polytechnic Institute
InventorsEric Howard Ledet, Kate Ronin, Erin Mahoney, Sydney Breaux, Ryleigh Greenwald, Garrett Volley, Derek Nelson
Life of this patent
Estimating the term…
Abstract
Implantable screws, implants, and systems that provide load-sharing while assisting with stabilization of the spine. The implantable screws including a proximal section, a distal section, and a middle section with two members coupling the proximal section and the distal section. The implantable screws may be used by applying a physiological load onto the first implantable screw and the second implantable screw to flex a middle section of each implantable screw and displace a proximal section relative to a distal section of each implantable screw.
Claims23
An implantable screw, comprising:
- a head portion, wherein the head portion comprises:
- a base member;
- a first arm extending away from a first side of the base member;
- and
- a second arm extending away from a second side of the base member, wherein the first arm is spaced apart from the second arm;
- a shaft;
- and
- a middle portion coupling the head portion to the shaft, the middle portion comprising:
- a first member coupled to and extending between a first side of the head portion and the shaft, wherein a first end of the first member is coupled directly to a bottom surface of the head portion and a second end of the first member is coupled directly to a top surface of the shaft, wherein the first member has a convex curvature along a longitudinal axis of the implantable screw as the first member extends between the head portion and the shaft;
- and
- a second member coupled to and extending between a second side of the head portion and the shaft, wherein a first end of the second member is coupled directly to the bottom surface of the head portion and a second end of the second member is coupled directly to the top surface of the shaft, wherein the second member has a convex curvature along a longitudinal axis of the implantable screw as the second member extends between the head portion and the shaft;
- wherein the first member is separate and spaced apart from the second member.
9 more elements
A method for using at least one implantable screw, comprising:
- inserting a first implantable screw into a first vertebrae, wherein the first implantable screw comprises:
- a head portion;
- a shaft;
- and
- a middle portion coupling the head portion to the shaft, the middle portion comprising:
- a first member coupled to and extending between a first side of the head portion and the shaft, wherein a first end of the first member is coupled directly to a second end of the head portion and a second end of the first member is coupled directly to a first end of the shaft;
- and
- a second member coupled to and extending between a second side of the head portion and the shaft, wherein a first end of the second member is coupled directly to the second end of the head portion and a second end of the second member is coupled directly to the first end of the shaft;
- inserting a second implantable screw into a second vertebrae;
- attaching a rod into the first implantable screw and the second implantable screw;
- and
- applying a physiological load onto the first implantable screw and the second implantable screw to flex a middle section of each implantable screw and displace a proximal section relative to a distal section of each implantable screw.
9 more elements
An implantable screw, comprising:
- a head portion;
- a shaft;
- and
- a middle portion coupling the head portion to the shaft, the middle portion comprising:
- a first member coupled to and extending between a first side of the head portion and the shaft, wherein a first end of the first member is coupled directly to a bottom surface of the head portion and a second end of the first member is coupled directly to a top surface of the shaft;
- and
- a second member coupled to and extending between a second side of the head portion and the shaft, wherein a first end of the second member is coupled directly to the bottom surface of the head portion and a second end of the second member is coupled directly to the top surface of the shaft;
- wherein the first member and the second member extend beyond an exterior surface of the head portion and an exterior surface of the shaft in a direction perpendicular to a longitudinal axis of the implantable screw.
5 more elements
An implantable screw, comprising:
- a head portion, comprising:
- a base member;
- a first arm extending away from a first side of the base member;
- a second arm extending away from a second side of the base member, wherein the first arm is spaced apart from the second arm;
- and
- a channel extending between the first arm and the second arm;
- a shaft;
- and
- a middle portion coupling the head portion to the shaft, the middle portion comprising:
- a first member coupled to and extending between a first side of the head portion and the shaft, wherein a first end of the first member is coupled directly to a bottom surface of the head portion and a second end of the first member is coupled directly to a top surface of the shaft;
- a second member coupled to and extending between a second side of the head portion and the shaft, wherein a first end of the second member is coupled directly to the bottom surface of the head portion and a second end of the second member is coupled directly to the top surface of the shaft;
- and
- a through hole extending through the middle portion between the first member and the second member and wherein the through hole has an elliptical shape in cross section.
10 more elements
An implantable screw, comprising:
- a head portion, comprising:
- a base member;
- a first arm extending away from a first side of the base member;
- and
- a second arm extending away from a second side of the base member, wherein the first arm is spaced apart from the second arm;
- a shaft;
- and
- a middle portion coupling the head portion to the shaft, the middle portion comprising:
- a first member coupled to and extending between a first side of the head portion and the shaft, wherein a first end of the first member is coupled directly to a bottom surface of the head portion and a second end of the first member is coupled directly to a top surface of the shaft, wherein the first member has a concave curvature as the first member extends between the head portion and the shaft;
- and
- a second member coupled to and extending between a second side of the head portion and the shaft, wherein a first end of the second member is coupled directly to the bottom surface of the head portion and a second end of the second member is coupled directly to the top surface of the shaft, wherein the second member has a concave curvature as the second member extends between the head portion and the shaft;
- and
- a through hole extending through the middle portion between the first member and the second member and wherein the through hole has an elliptical shape in cross section.
10 more elements
Dependencies are inferred from the claim text.