ITPI950043U1 - MINI-CATHETER FOR LOCAL TREATMENT OF NEOPLASTIC MODULES BY INJECTION OR INFUSION OF CHEMICAL AND PHARMACOLOGICAL SUBSTANCES - Google Patents

Description

TITLE OF THE FOUND AND DETAILS OF THE INVENTORS:

Title:

MINICATETERE FOR THE LOCAL TREATMENT OF NEOPLASTIC NODULES BY INJECTION OR INFUSION OF CHEMICAL OR PHARMACOLOGICAL SUBSTANCES

SUMMARY

The developed device consists of a minicatheter to be used for the local treatment of neoplastic nodules by injection or direct infusion of chemical or pharmacological substances. The minicatheter is positioned directly inside the tumor to be treated by percutaneous puncture, made with a puncture cannula needle and performed under the guidance of ultrasound or computed tomography equipment.

DESCRIPTION OF THE FOUND

The invention is made up of 4 elements:

- puncture cannula needle

- minicatheter

- 3-way tap

- syringe

The puncture cannula needle consists of:

- polypropylene plastic cannula, 18 Gauge (1.2 mm), length 220 mm

- metal mandrel with non-cutting tip, which allows the cannula to move into the tissues

- internal metal stylet to avoid picking up tissue fragments during the puncture

- sliding spacer, which allows to highlight the puncture depth on the cannula

The minicatheter consists of:

- 20 Gauge polyamide minicatheter (0,85 mm), length 300-500-1000 mm, with closed tip and 6-9-12 lateral holes, placed in line 3 to 3, spaced at angles of 120 ° l ' one from the other. The 3 triplets of holes are located approximately 5, 10 and 15 mm from the tip of the minicatheter.

- device for coupling the catheter to the cannula needle connection which allows to maintain the longitudinal stability of the catheter during the push and its advancement in the cannula.

- proximal screw connection that allows the connection of the catheter to any infusion device (syringe, pump, etc.).

Procedure:

(subject to sterile field preparation procedures and patient local anesthesia)

- advancement of the puncture needle in the lesion under the guidance of ultrasound or computed tomography

- retraction of the metal mandrel together with the stylet

- introduction of the catheter into the cannula using the coupling device mounted on the catheter itself. The lumen of the catheter must first be filled with physiological solution to avoid injecting air.

- advancement of the catheter until the tip reaches the tip of the cannula

- by counter-thrusting the catheter, so that it maintains its position, gently remove the plastic cannula

- connect the catheter to the screw fitting and insert a 3-way tap on the fitting that allows you to open or close the catheter towards the injection syringe - connect the syringe to the tap and proceed with the injection

- close the tap at the end of the injection and then repeat the procedure as needed after a variable interval of time (depending on the type of lesion and the therapy protocol used)

- withdraw the catheter

Claims (1)

We claim: 1) the priority in having first devised a device that allows local intratumoral therapy by positioning, directly inside the neoplastic nodule, a mini-material that allows the administration of chemical or pharmacological substances.