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The Cole Instruments Blog

Doctors share the latest articles and information from Cole Instruments.

Tuesday, 31 July 2012 14:27

Sharp Punches Vs. Dull Punches 2

Written by John Cole, MD
Over the years we have performed a number of punch force comparison studies to evaluate the sharpness of our FUE punches. As you can see from Figure 1, Cole punches are far sharper than any punch in the world. We performed a study where we evaluated the force required to break a piece of silicone rubber using a force meter. In this study we evaluated the 1 mm punch that is available from a variety of manufacturers. We placed each punch in a collet we designed to hold punches. We then applied a force to the punch. The force required…
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Published in Surgical Tools
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Thursday, 21 June 2012 17:19

Dr. Cole discusses potential advantages with the Graft Chiller Plate 2

Written by John Cole, MD
Dr. Cole discusses potential advantages with the Graft Chiller Plate by Cole Instruments, Inc. in this presentation about graft holding solutions. Hypothermic storage reduces metabolism of the cells and can improve the survival rate of hair transplant grafts in some instances. Only the Graft Chiller Plate by Cole Instruments, Inc. can maintain a constant hypothermic temperature over the course of an entire hair transplant procedure. Ice can melt suddenly and result in a rapid rise in temperature. This sudden rise is traumatic to cells. If you add ice again to bring the temperature down again, this is an additional trauma…
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Published in Hair Transplant Procedure
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Wednesday, 23 May 2012 21:22

Tools to Increase Density in The Recipient Area 2

Written by John Cole, MD
Are there any instruments that allow the physician to increase density in the recipient area? No, there are no specific instruments that allow the physician to improve the yield when higher densities of grafts are placed into the recipient area. Studies have shown that densities above 30 grafts per square millimeter can result in a reduced follicle yield. There are two products we are currently using to help improve the yield of grafts, however. These two products are free radical scavengers and liposomal ATP. The accumulation of free radicals may be the cause of poor growth in some individuals who…
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Published in Doctors Help
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Wednesday, 04 January 2012 15:37

Hairmes Software for Calculating Scalp Surface Area with Hair Restoration 2

Written by John Cole, MD
Jean Devroye recently asked Alexandre Duvallet to create a software program to measure the scalp surface area.  The software is useful for measuring the both the donor area and the recipient area. One can also plot the follicular density in a given area using the software. The software has it’s limitations however.  The scalp is a curved  three-dimensional surface.  Photographs are a two dimensional surface.  In order to convert a scalp surface area to a two dimensional surface area, one must take a clear surface area such as saran wrap, place it on the scalp, and then draw the surface area…
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Published in Hair Restoration News
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Friday, 23 December 2011 01:15

How to Choose FUE Punches for Hair Restoration 2

Written by John Cole, MD
Not all FUE punches for hair restoration are created equally.  Other than the punches Cole Instruments created, FUE punches have a thicker wall and are not as sharp.  Cole Instruments created the thinnest wall and sharpest punches on the market.  This is very important to the success of FUE hair transplant surgery.    Removal of hair follicles in FUE depends on two forces.  One is the axial force or the inward pressure on the skin.  The second is the tangential force created by rotation or oscillation.  Both forces will be less with a thin wall and a sharp punch.  Lower…
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Published in Surgical Tools
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