Industrial Consultancy & Sponsored Research (IC&SR) , IIT Madras
Technology Category/Market
Technology: Microwave antenna device;
Industry: Healthcare; Applications: Bio-medical Engineering, Medical & Surgical device;
Market: The global microwave antenna market size is projected to $3.06B by 2030, at a CAGR of 5.1% during period of 2022-2030.
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Problem Statement
- It is noted that Microwave energy is clinically being used for the treatment of cancer by ablation and hyperthermia.
- Hyperthermia treatment (HT) of cancer involves selective elevation of cancerous tissue temperature to 40-45°C.
- Various external heating devices, endocavitary, interstitial and intracavitary applicators were explored for treatment of cancer based on patent & non-patent literature survey.
- However, intracavitary applicators have limited scope for antenna optimization due to stringent space constraints within the natural body cavity. And said devices are not clinically proven to use.
- Hence, there is a requirement to introduce an improved device to mitigate above challenges & provide new efficient solution.
- This invention provides solution for said issues.
Technology
- Present invention describes a microwave antenna device configured to provide effective hyperthermia treatment to a tissue volume at least one operating frequency F1.
- Said device comprises of
a)an applicator of first diameter having front portion;
a coaxial monopole antenna of second diameter smaller than first, wherein the antenna having a central conductor surrounded by a coaxial conductor having a wall thickness & with an insulating material therebetween, the central conductor extending towards the closed end of the applicator, the antenna having an exposed conductor of length Le(121), and a free insulated portion of length g extending from the antenna junction; and
b) a choke of length C1 & having 3rd diameter & a hollow annular space therewithin, located on the coaxial conductor at a distance Cp from the anten
Key Features/Value Proposition
Technical Perspective:
- Claimed device includes one or more choke wherein an annular space within the choke is filled with water as a coupling medium.
- First choke & second chokes are oriented so that the first choke is configured to allow the antenna to resonate at a higher frequency F1 to produce hyperthermia at a higher intensity over a smaller volume, and the second choke is configured to resonate at a lower frequency F2 & cause a lower intensity hyperthermia over a larger volume.
- The choke length is equal to 1/4 or 3/8 of the wavelength of the microwave radiation at the operating frequency F1. Further, said device provides three frequencies F1, F2 & F3.
Industrial Perspective:
- Cost-effective device for a low profile microwave antenna device, having a catheter with a pointed front portion configured to pierce tissue.
- The advantage of multifrequency approach is that various tumour sizes can be conformally heated without causing undesired healthy tissue heating.
User Perspective:
- Ensures more reliable & user-friendly device by Medical Trained Authorized technician.
- The Patented device is compact in size, having diameter of 2 mm or less.
- Facilitates better local control, improved long term survival, & complete response.
Questions about this Technology?
Contact for Licensing
Research Lab
Prof. Kavitha Arunachalam
Department of Engineering Design
Intellectual Property
IITM IDF Ref : 2028
IN Patent No. 437127
Technology Readiness Level
TRL- 3/4
Proof of Concept & validated