Shape Memory Polymer Foam Vascular Occlusion Device for the Treatment of Chronic Venous Insufficiency

Information

  • Research Project
  • 9134385
  • ApplicationId
    9134385
  • Core Project Number
    R43EB022016
  • Full Project Number
    3R43EB022016-01A1S1
  • Serial Number
    022016
  • FOA Number
    PA-14-072
  • Sub Project Id
  • Project Start Date
    9/4/2015 - 8 years ago
  • Project End Date
    7/31/2016 - 7 years ago
  • Program Officer Name
    RAMPULLA, DAVID
  • Budget Start Date
    9/4/2015 - 8 years ago
  • Budget End Date
    7/31/2016 - 7 years ago
  • Fiscal Year
    2015
  • Support Year
    01
  • Suffix
    A1S1
  • Award Notice Date
    9/3/2015 - 8 years ago
Organizations

Shape Memory Polymer Foam Vascular Occlusion Device for the Treatment of Chronic Venous Insufficiency

? DESCRIPTION (provided by applicant): It's estimated that 6 million people in the United States suffer from severe symptoms of chronic venous insufficiency (CVI). Up to 500,000 of these individuals have or will develop venous ulcers, which cause severe pain, limited mobility, absence from work, psychological stress, and exude an odor that can lead to social isolation of the patient. The annual healthcare cost associated with CVI is more than $1 billion in the United States and more than $650 million in the UK. Current treatments of CVI include surgical stripping and ligation of refluxing veins, sclerotherapy, and endovenous ablation. The current gold standard for treating CVI is endovenous ablation (EVA). However, recurrence rates as high as 32% have still been reported after EVA treatment. Other limitations of EVA are the complexity of the procedure, inability to be used in excessively tortuous or short vessels, and the procedural pain reported by patients. The proposed project outlines the development of a shape memory polymer (SMP) foam vascular occlusion device (VOD) to treat complications associated with CVI. The VOD will provide rapid, complete occlusion of the great saphenous vein with minimal risk of device dislocation, vessel rupture, and damage to surrounding tissue and nerves. The time required, and procedural difficulty, to complete endovenous ablation procedures will also be significantly reduced. Benchtop verification studies will be performed to ensure the proposed devices are stable at the treatment region under flow rates four times greater than what is typically seen in patients. Device migration from the treatment region will also be monitored when subjected to flexion and compression to mimic the conditions that would be seen in the peripheral vessels during ambulation and muscle contraction. Verification studies will also be performed to ensure no particulates are created during perfusion of the device. These studies will subject the VOD to various flow rates at body temperature for 30 minutes, and all perfused fluid containing any particulates will be collected in a collection basin The perfused fluid will then be strained through a 5µm pore filter that will be subsequently analyzed via microscopy to determine compliance with the criteria dictated in USP <788>. Finally, the VOD will be delivered to a PDMS model of the great saphenous vein by a practicing interventional radiologist and vascular surgeon using conventional endovenous techniques and ultrasonography. The device will be evaluated for navigability, visualization, ease of use and deployment, and effectiveness in occluding the target vessel.

IC Name
NATIONAL INSTITUTE OF BIOMEDICAL IMAGING AND BIOENGINEERING
  • Activity
    R43
  • Administering IC
    EB
  • Application Type
    3
  • Direct Cost Amount
  • Indirect Cost Amount
  • Total Cost
    25000
  • Sub Project Total Cost
  • ARRA Funded
    False
  • CFDA Code
    286
  • Ed Inst. Type
  • Funding ICs
    NIBIB:25000\
  • Funding Mechanism
    SBIR-STTR RPGs
  • Study Section
    ZRG1
  • Study Section Name
    Special Emphasis Panel
  • Organization Name
    SHAPE MEMORY MEDICAL INC.
  • Organization Department
  • Organization DUNS
    025984823
  • Organization City
    SANTA CLARA
  • Organization State
    CA
  • Organization Country
    UNITED STATES
  • Organization Zip Code
    950542254
  • Organization District
    UNITED STATES