Surgical Aspiration System

Submitted 6 years ago

Subject: An offer for new patented technology in neurosurgery

Dear Sir,

Please find below a brief description of our new technology. This mail is important. Kindly forward this mail to your R&D or new products division. In case you are interested in our technology or want some more information then kindly get back to us.

Thanking you,

Alka Kumar
Atul Kumar

Address:
11 Rathore Nagar, Queens Road,
Vaishali Nagar,
Jaipur 302021
India

[email protected]

Mobile# + 91-9828154546

Granted US Patent No 7918822, Patents pending in Europe and India
Title of the invention: Surgical aspiration system and method of surgical aspiration
Inventors: Alka Kumar, Atul Kumar

The present invention is a intelligent controller based neurosurgery pump which provides uninterrupted single handed surgical aspiration without clogging for brain and spine surgery. The invention is critically vital for brain and spine surgery. The invention comprises of a bi directional peristaltic pump. A suction tube whose proximal end is connected to the pump and the distal end is connected to an aspiration cannula. A pressure sensor is connected to the suction tube. The pressure sensor is in turn connected to a controller and the controller in turn regulates the to and fro motion of the peristaltic pump. In conventional brain and spine surgery the surgeon holds the bipolar forceps in his right hand and the aspiration cannula in the left hand. The micro aspiration cannula frequently gets permanently blocked by small blood clots and tumour tissue and in such situation the surgeon has no choice but to vigorously shake the cannula or to detach the aspiration cannula from the suction tube and to retrograde flush the aspiration cannula to release the blood clots or to use a metallic stellate. In spine surgery the small bony spicules block the aspiration cannula. So great is the fear of cannula clogging that in brain aneurysm surgery the neurosurgeons use up to three suction machines simultaneously. These are the major problems of neurosurgery which wastes valuable time and the surgery is stopped while the cannula is being cleaned. The present invention totally negates such problems and allows the surgeon to aspirate uninterruptedly without the cannula getting clogged at any moment of time.

The peristaltic pump runs is a forward direction to aspirate the blood, blood clots and tumour tissue. However the moment the aspiration cannula gets blocked by a blood clot an audio signal is emitted to inform the surgeon of the clogging and a rising negative pressure is sensed by the pressure sensor which directs the controller to immediately rotate the peristaltic pump in the backward reverse direction, which creates a positive pressure in the aspiration cannula and the blocking tissue just drops out of the cannula. After the block audio signal the surgeon can move the aspiration cannula outside the surgical field so that the clot is either deposited on the drapes or just falls over the floor. The surgeon can also pick up a large clot from the brain surface, with a micro cannula, and just drop it on the floor. Once the blockage is released the peristaltic pump starts to immediately move in the normal forward direction and normal aspiration continues. Thus the surgeon is allowed to do a totally uninterrupted aspiration irrespective of blood clots, tumour tissue and bony spicules which intermittently tend to clog the aspiration cannula. The pump can be programmed for multiple parameters by the surgeon including the type of aspiration cannula and the suction flow rate. The aspiration cannula, suction tube and pressure sensor are all disposable items hence constitute a lucrative commercial market.