
Executive Summary

Tech Discussion
 Project description
(Kyle Halfacre)
 Background
(George Trifon)
 What We Are Doing
 Why It Is Needed
 How It Is Different
 Subsystems
 Block Diagram
 Subsystem Relationship
 Literature Review
Summary (Luciana Mottola)
 Plan For Completion
 Deliverables
 Designation of Principal
Responsibilities
 Required Financing
 Timeline
 Action Item List
 Resources
 Price List (Materials)
 Resources
 Price list
 Equipment

Summary (Kyle Halfacre)

The majority of procedures
today utilize the pedicle screw
stabilization system.
 The system screws into the
pedicle.
 It fuses vertebra together.
Background

Screws tend to brake of come
out of bone.
 Pedicle can brake off.

 What We Are Doing
There a many problems associated with the current
pedicle screw stabilization system (Some of which can
be life threatening).
 By eliminating the screws, we are drastically
reducing the trauma to the bone.
 We are supporting the spine without any sort of
cutting, drilling or grinding on the bone.
 We are developing a system that is durable and
reliable.

 Why It Is Needed

The only options with current systems are;
 A complete inter-vertebral fusion which does not
allow for any motion and generally utilizing the
pedicle screw system.
 A dynamic system which has a high risk of failure
(currently being recalled).
 Or other, more exotic systems that are still very
risky extremely traumatic and extremely invasive
(meaning, they are very painful requiring long
recovery time).
 Why It Is Needed
Most of these systems require large and or heavy hand
tools and/or large and heavy power tools for cutting
and/or bending strong materials during the installation
procedure. (difficult installation usually means long
procedure, very invasive and extremely traumatic)

 How It Is Different
Instead of drilling, our system will use
 Pressure from pseudo-elastic, spring, or memoryshape alloy
 High friction microstructure
 Mechanical hold from shape to secure our device
into place.
 Instead of complete fusion between vertebrae (which
immobilizes the spine), our system will utilize
 Sintered alloy matrix
 Infused with a bone morphogenetic protein (to
induce bone growth into it)
 Bone fusion to Hardware which will allow motion
between vertebrae.

 Deliverables

We will deliver an effective and efficient device.
 THE SPINESTB WILL RETAIN THE SPINE’S NORMAL
FUNCTION!!!
 By design the SPINESTB will be simple to assemble and
simple to install. (Lowering the possibility for human error)
 The SPINESTB will be minimally invasive thereby reducing
recovery time.
 The SPINESTB will cause little to no trauma to the bone
tissue during installation and during function.
 The SPINESTB will allow for intra-vertebral disk recovery
and healing.
 The SPINESTB will be modular, for easy modification and
upgrade.
 Designation of Principal Responsibilities
DR.MAHAJAN
FACULTY TECHNICAL ADVISOR
Mechanical engineering
GEORGE TRIFON
(ME, PM)
Horizontal Force Applicator
Vertical Force Applicator
Ergonomic Interaction and Optimization
KYLE HALFACRE
LUCIANA MOTTOLA
(ME)
(ME)
Contact Pad
Lateral Bracket
Contact Site
Rear Linkage
Material Selection
BMP (Bone Morphogenetic Protein)
 Required Financing
 Price List (Materials)
 200g
Tantalum ……………………………$100.00
 0.5”x 3” Titanium.……………………………..$100.00
 Stainless Steel (Bar Stock)……………………$100.00
 Resources
 Materials Processing Lab
 Hot Press
 Machine Shop
 Lathe
 Mill
 Oxy-Acetelyne Torch
 Tig Welder
 Subsystem Relationship
Lateral Force Applicator
•Spring-like material
Vertical Force Applicator
Rear Linkage
•Spring-like material
•Metal
Lateral Brackets
•Metal
Contact Pad
•Metal
Bone
Contact Site
•Porous Metal
Axial View
Lateral View
 Subsystem Relationship
 Literature Review Summary

Introduction
• 400,000 lower back operations performed every year in the United
States.
• Herniated or
Osteoarthritis.

Ruptured
Disk,
Lumbar
Spinal
Stenosis,
Anatomy of the Vertebrae
• Facet joints, spinal canal, nucleus and the annulus.

• L1-L5, are the ones most frequently involved in back pain.
• The highest activity is located on the segments L3-L4 and L4-L5.
• The most strain is taken by the segments L4-L5 and L5-S1.
and
 Literature Review Summary

One Level Fusion
• The one level fusion surgery normally contains four pedicle screws and
two rods along with connective hardware.
• Approaches: Anterior Lumbar Interbody fusion,Posterior Lumbar fusion
Interbody Fusion, Transforaminal Lumbar Interbody Fusion.
Dynamic Stabilization systems
•One of the most prevalent systems available today for spine stabilization is
the Dynesys Neutralization system.
 Literature Review Summary

Spinal fusion through the use of bone cement
• Cements introduced in 1940.
• The most common use is in securing artificial joints in place. One
application is in hip replacement.
• The cement is used to fill gaps between the hardware that is inserted into
hollowed out hip bone and the bone itself.
 Timeline
 Action Item List
Project: Spine Stabilization System
Project Number: S09-98-SPINESTB
Team Members:
George Trifon,ME (PM)
Luciana Mottola, ME
Kyle Halfacre, ME
#
Activity
Person
Assigned
Due
Status
Obtain current prices of materials
LM
24-Aug
7-Sep
0%
Work Horizontal force applicator
GT
24-Aug
7-Sep
0%
Work on vertical Applicator
GT
24-Aug
7-Sep
0%
Work on Rear Linkage
LM
24-Aug
14-Sep
0%
Work on Lateral Brackets
LM
24-Aug
14-Sep
0%
Work on contact Pad
KH
24-Aug
14-Sep
0%
Produce Parts in solidworks
KH
24-Aug
21-Sep
0%
1
2
3
4
5
6
7
Item
Description
Quanti
ty
1
Computer
1
2
MS Office
1
3
ANSYS or SolidWorks
1
4
Printer
1
$ Each
on
hand
on
hand
on
hand
on
hand
$
Subtot
al
$0.00
$0.00
$0.00
$0.00
$0.00
$0.00
$0.00
$0.00
TASK
GT
LM
KH
DR.MAHAJAN
Obtain current
prices
(S)
(R)
(S)
(A)
Responsibility
(R)
Work on
Prototype
(R)
(I)
(I)
(A)
Approval
(A)
Produce parts in
SolidWorks
(S)
(S)
( R)
(A)
Support
(S)
Information
(I)

Project Overview
 Elimination of bone anchors

Designation of Principal Responsibilities
 Subsystem distribution

Plan to Finish on Time
 Follow the projected timeline for milestones and due dates

Resources Needed
 Most resources will be from the ME Computer lab, i.e. MS
Office, ANSYS, and printer