| 摘要 |
A medical device known as a catheter is configured with a variable infusion rate to deliver a therapeutic substance such as pharmaceutical compositions, genetic materials, and biologics to treat a variety of medical conditions such as pain, spastisity, cancer, and other diseases in humans and other animals. The variable infusion rate catheter provides clinician with increased flexibility, versatility, and many other improvements. The variable infusion rate catheter has a Micro Electro Mechanical System (MEMS) flow restriction with a variable infusion rate. The MEMS flow restriction is fluidly coupled to the catheter to receive therapeutic substance dispensed from a therapeutic substance delivery device and restrict the therapeutic substance flow to a desired infusion rate. Many embodiments of the variable infusion rate catheter and its methods of operation are possible.
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