Merit Medical Systems, Inc.

Custom Medical Applications Inc.

Universal Medical Instrument Corp.

Joseph E Biche

Jim D Mottola

Stephen W Carlstrom

Darwin L Mullins

Fred P Lampropoulos

N Sandor Racz

Gary Bullard

Andy E Poursaid

Jerry L Trujillo

M Mary Sinnott

Christopher Wiley

Flexible spinal needle

A catheter system including an infusion catheter interacting with an occluding wire. The infusion catheter has an interior surface defining a lumen longitudinally extending between a proximal end and a distal end. The interior surface of the catheter includes a cylindrical first portion positioned at the proximal end, a cylindrical second portion positioned at the distal end, and an annular, sloped, tapered portion extending therebetween. The second portion terminates at a tip opening. An annular sensing ridge radially inwardly projecting around the tip opening. A plurality of small infusion holes extend through the side of the infusion catheter proximal of the tapered portion. The occluding wire includes a thin placement wire having an enlarged occluding ball placed at the distal end thereof. Projecting from the occluding ball on the side opposite the positioning wire is a coiled spring wire. The spring wire has ridges formed by the top of the wire and grooves formed between each coil. The maximum outer diameter of the spring wire is larger than the inner diameter of the annular sensing ridge. Accordingly, as the coiled spring wire passes through the sensing ridge, the sensing ridge tactually engages the coiled wire to causes vibrations felt by the user.

Infusion catheter systems with tactile sensing feedback

A fluid infusion system includes a pump having a body that slidably interacts with a handle. The body includes a valve housing fluid coupled with an inlet passageway, an outlet passageway, and a dispensing barrel. A finger rest rigidly projects from the dispensing barrel. A loading chamber is recessed within the finger rest and is configured to receive a fluid supply syringe. A plunger, mounted to the handle, is slidably received within the dispensing barrel. As the plunger is advanced within the barrel, fluid is dispensed from the pump. As the plunge is retracted within the barrel, the barrel is automatically filed with a fluid. The nozzle of the pump is fluid coupled to a hemostasis valve which is in turn fluid coupled to an infusion catheter. The infusion catheter has a distal end with an enlarged tip opening and a plurality of small infusion holes extending through the side thereof. An annular sensing ridge radially inwardly projects from the interior of the catheter at the tip opening. An occluding wire has an enlarged occluding ball positioned at the end thereof and is configured to occlude the distal end of the catheter. Projecting from the occluding ball on the side opposite of the positioning wire is a coiled spring wire. The spring wire vibrates against the sensing ridge as it passes therethrough.

Pulse fluid infusion systems

A percutaneous catheter introducer (PCI) is disclosed having a transparent housing, a valve seal disposed within the housing, a rotatable suture ring including a tab, and a sheath extending through the suture ring and into the housing. The transparent housing allows for detection of emboli formation inside the percutaneous catheter introducer. The rotatable suture ring permits versatility of movement when sewing the PCI device to the patient.

Percutaneous catheter introducer

Growing community of inventors

Mayfield, NY, United States of America

Joseph E Biche