System and method for force, displacement, and rate control of shaped memory material implants

a memory material and rate control technology, applied in the field of system and method for force, displacement, and rate control of shaped memory material implants, can solve the problems of implant applying the maximum potential force to the surrounding tissue, the need for the control of the rate, and the large changes in the shape of the memory metal implant formed from the memory metal, so as to facilitate fusion and control the rate of shape change of the memory metal, and not cause impingement of the spinal cord
US20070265631A1Inactive Publication Date: 2007-11-15FOX WILLIAM CASEY
23 Cites 53 Cited by

Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
FOX WILLIAM CASEY
Publication Date
2007-11-15
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

An energy delivery device controls the transformation of the microstructure of shape memory material. A surgeon can use the energy delivery device to control the rate of implant shape change, the extent of implant shape change, as well as the force exerted on the surrounding tissue. The energy delivery device allows for the fine control of force when fixating osteoporotic bone and rate of bone transport when working near the spinal cord. The energy delivery device models or measures the heating profile of the implant and provides the surgeon a method to control the extent of microstructure phase transformation so that the rate, force or extent of implant shape change can be controlled individually or together. The invention is an implant controlled with an energy delivery device that transforms the microstructure of a shape memory material through heat generation in the implant. The implant is manufactured so that the energy delivery device achieves an implant temperature that controls the conversion of the microstructure for one of a plurality of members.
Need to check novelty before this filing date? Find Prior Art

Description

FEDERALLY SPONSORED RESEARCH

[0001] Not applicable FIELD OF THE INVENTION

[0002] The present invention relates to instrumentation and a method of controlling in vivo shape changes in devices formed from memory materials that change shape when heated. In particular, the present invention relates to surgical instrumentation, used to control the rate of shape change and forces imparted to the surrounding tissue by memory material implants during medical use. BACKGROUND-DISCUSSION OF THE PRIOR ART

[0003] Shape memory alloys such as nitinol have been well known since their development by Buehler and Wiley (U.S. Pat. No. 3,174,851) in 1965. Other metals, such as AuCd, FePt3, beta Brass and InTI, exhibit shape memory behavior. These materials have the property of changing shape in response to a change in material temperature. This shape change potential is imparted into the memory metal device through a series of heat treatments.

[0004] The transition temperature range is imparted to the m...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More