PR O D U C T INFORM ATION
FEATURING PATENTED SUPERELASTIC NiTiNOL TECHNOLOGY
IT’S SUPERELASTIC! THE “RUBBER-BAND” EFFECT. The DynaNail Mini features MedShape’s patented and proven superelastic NiTiNOL technology.1,2 The internal NiTiNOL Compressive Element is stretched (1 in below graph) and fixed with screws (2). Post-surgery, the NiTiNOL Element will automatically recover its stretched length due to unloading in response to bone resorption or settling (3), analogous to a very strong rubber band.
NiTiNOL Stress Strain
2
1
Unloa
d
The DynaNail Mini® Fusion System is designed for use in subtalar fusion and in the fusion of other large bones in the foot and ankle.
“I was initially attracted to the DynaNail Mini due to its excellent post-operative
Stress
Stretch
Pseudoelastic Recovery
compression, particularly in patients with poor bone quality. From my experience so
3
far, I have found the nail to be easy to use and the results reproducible across my patient population.” 0
– Terrence Philbin, DO Orthopedic Foot & Ankle Columbus, Ohio
0
1
2
3
4
5
6
7
Strain (%)
“As a big believer in the dynamic compression capabilities of NiTiNOL in promoting fusion, I am pleased to add the DynaNail Mini to my arsenal of surgical tools.
NEW! PRE-LOADED ASSEMBLY
The DynaNail Mini offers the same benefits of sustained post-operative compression as its predecessor, the DynaNail, but now in a smaller size expanding the use of NiTiNOL to other indications.”
The DynaNail Mini is provided with the NiTiNOL Element pre-stretched and pre-loaded on a disposable Nail Guide. Just connect the Nail Guide to the Mini Targeting Frame and implant!
– Kent Ellington, MD OrthoCarolina Foot & Ankle Institute Charlotte, North Carolina Internal NiTiNOL Element 1-Yakacki CM, Gall K, Dirschl DR, Pacaccio DJ. Pseudoelastic intramedullary nailing for tibio-talo-calcaneal arthrodesis. Expert Rev Med Devices 2011; 8(2): 159-66. 2-1.Ford SE, Kwon JY, Ellington K. Tibiotalocalcaneal Arthrodesis Utilizing a Titanium Intramedullary Nail With an Internal Pseudoelastic Nitinol Compression Element: A Retrospective Case Series of 33 Patients. J Foot Ankle Surg, 2019. 58(2): 266-272. 3-Data on File, MedShape, 2019.
Nail Outer Body
Nail Guide
THE SAME MAINTAINED COMPRESSION PERFORMANCE. NOW IN A SMALLER FORM
• Offers between 2-4 mm of post-operative compression PLUS intra-operative manual compression Transverse Screw
• Provides strong joint stability due to maintained compression • Dual transverse screw fixation to prevent device migration
Titanium Outer Nail Body
Maintained Active Compression Unlike traditional screws that lose compression within 1 mm of bone resorption, the DynaNail Mini is the ONLY internal device for subtalar fusion procedures that maintains active compression post-surgery in response to bone resorption or settling. The amount of compression maintained varies by the length of the Mini Implant.3 Amount of available post-operative compression by implant length Nail Length
Internal NiTiNOL Compressive Element
Compression
60 mm
1.8 mm
70 mm
2.2 mm
80 mm
2.8 mm
90 mm
3.4 mm
100 mm
4.0 mm
Slotted Calcaneal Screw Hole
Transverse Screw Sliding Element
WATCH THE COMPRESSIVE ELEMENT IN ACTION 11 Weeks Post-Surgery X-Ray of 70 mm DynaNail Mini implanted in 81 year old female.
**
1 mm 1 mm
**
The distance the NiTiNOL Element recovers can be measured and tracked on x-ray post-surgery. In this case, with a 70mm, the Calcaneal Screw is located 1 mm from proximal end of Nail Outer Body slot indicating the NiTiNOL Element has recovered 1.2 mm of its stretched length with 1 mm of compression remaining.
Images courtesy of Terrence Philbin, DO (Orthopedic Foot & Ankle, Columbus, OH)
Targeting Arm
DYNANAIL MINI TARGETING FRAME
• Manufactured out of durable carbon-fiber PEEK Bone Apposition Sleeve
• Rigid, robust construction for accurate targeting and screw placement • Radiolucent to permit radiographic visualization
Manual Compression Wheel
Lasermarked numbers indicate order of steps
Retention Knob
DYNANAIL MINI IMPLANTS
DYNANAIL MINI SINGLE USE INSTRUMENTS
Part No.
Description
Part No.
Description
2600-00-7060
DynaNail Mini, 7 mm x 60 mm
2200-19-0020
Steinmann Pin, 2 mm x 9"
2600-00-7070
DynaNail Mini, 7 mm x 70 mm
2900-16-070
Cannulated Drill, 7.0 mm
2600-00-7080
DynaNail Mini, 7 mm x 80 mm
2900-16-075
Cannulated Drill, 7.5 mm
2600-00-7090
DynaNail Mini, 7 mm x 90 mm
2900-16-080
Cannulated Drill, 8 mm
2600-00-7100
DynaNail Mini, 7 mm x 100 mm
2900-16-085
Cannulated Drill, 8.5 mm
2600-00-8060
DynaNail Mini, 8 mm x 60 mm
2900-03-0400
Transverse Screw Drill, 4 mm
2600-00-8070
DynaNail Mini, 8 mm x 70 mm
2900-04-0380
Stepped Guidewire, 2.4 mm x 380 mm
2600-00-8080
DynaNail Mini, 8 mm x 80 mm
2600-00-8090
DynaNail Mini, 8 mm x 90 mm
2600-00-8100
DynaNail Mini, 8 mm x 100 mm
2600-03-4322
Headless Screw, 4 mm x 22 mm
2600-03-4324
Headless Screw, 4 mm x 24 mm
2600-03-4326
Headless Screw, 4 mm x 26 mm
2600-03-4328
Headless Screw, 4 mm x 28 mm
2600-03-4330
Headless Screw, 4 mm x 30 mm
2600-03-4332
Headless Screw, 4 mm x 32 mm
2600-03-4334
Headless Screw, 4 mm x 34 mm
2600-03-4336
Headless Screw, 4 mm x 36 mm
2600-03-4338
Headless Screw, 4 mm x 38 mm
2600-03-4340
Headless Screw, 4 mm x 40 mm
2600-05-0000
Endcap
For further product information or to arrange a product demonstration, please contact your local MedShape representative or call Customer Service at 877-343-7016. You can also visit www.medshape.com.
CHECK OUT THE ENTIRE DYNANAIL® PRODUCT LINE!
Available in 220, 260, and 300 mm lengths for use in tibiotalocalcaneal (TTC) fusion procedures.
MedShape, Inc. 1575 Northside Drive, NW Suite 440 Atlanta, GA 30318 T: 877-343-7016 F: 877-343-7017
CAUTION: Federal (USA) law restricts this device to sale by or on the order of a physician. ©MedShape, Inc., 2019. All rights reserved. Printed in the USA. MK-10173 Rev. 00. Issued 09/2019. Pat.: http://www.medshape.com/patents.html. DynaNail is a registered trademark of MedShape, Inc. All other trademarks are trademarks of their respective owners or holders.