The slit valves in Heyer-Schulte peritoneal and cardiac catheters control the pressure for the entire shunting system. The slit valves consist of four individual slits precisely placed in the catheter near the distal tip. All peritoneal and cardiac catheters are available in three pressures low, medium and high. For easy identification, catheters are marked with black dots at the proximal end to indicate the pressure rating.
1 dot: low pressure ………. 2-5 cm H20
2 dots : medium pressure …… 6-9 cm H20
3 dots : high pressure ……. 10-14 cm H20
The pressure ratings indicate the length of a column of testing solution in the catheter (water, saline solution, etc.) from the top of the slit valve. For complete pressure testing procedures, please see pg. 18.
The extreme distal ends of all these catheters have black, X-ray detectable tips to aid in determining location during and subsequent to placement. The distal end is coated with antithrombotic Hepacone to reduce clotting and tissue adherence. In addition, the slit valves are coated with graphite to minimize adherence during storage and autoclaving.
RAIMONDI PERITONEAL CATHETER
A stainless steel spring is embedded within the catheter wall to reduce kinking which can occur
1.) where the catheter connects to the flushing device;
2.) in its course over the clavicle; 3.) within the neck where it curves around the clavicle muscles; 4.) in the abdomen, as it penetrates the muscle before entering the peritoneal cavity; 5.) within the peritoneal cavity.
Four slit valves regulate flow and determine the pressure of the system. The entire catheter is X-ray
detectable. Supplied with special threaded connectors.
Low Pressure
Medium Pressure
High Pressure
MATHEWS PERITONEAL AND CARDIAC CATHETER
X-ray detectable markings at 1 cm intervals from the distal tip allow exact positioning by permitting the surgeon to count the number of markers that have been placed within the cavity either visually or by X-ray. The markings also permit the surgeon to follow the patient through growth periods to determine the amount of catheter still within the cavities.
Unlike barium impregnated X-ray opaque catheters, this catheter allows exact visualization and more ac
curate determination of pressure prior to implantation.
Cardiac types
Medium Pressure
Low Pressure
High Pressure
Peritoneal types
Low Pressure
Medium Pressure
High Pressure
PUDENZ PERITONEAL AND CARDIAC CATHETER
This catheter available in either clear silicone rubber or barium impregnated silicone rubber. The clear mode with X-ray detectable tip.
The barium impregnated model allows X-ray detection of the entire length in addition to increased X-ray density of the tip location. The opaque barium coating makes pressure testing more difficult.
Like all Heyer-Schulte catheters, the distal end-up
2 cm from the tip coated with anticoagulant Hepacone to reduce clotting and tissue adherence.
Cardiac and Peritoneal types
Plain
Low Pressure
Medium Pressure
High Pressure
Barium
Low Pressure
Medium Pressure
High Pressure
PUDENZ INFANT CARDIAC CATHETER
This modification of the Pudenz Cardiac Catheter is designated for use in infants with small veins. The distal end stepped down to 1/2 normal diameter for easier insertion. The length of this reduced diameter section specified in centimeters in the size designations. Also used when replacing a conventional catheter with fibrous tissue restricts the opening in the vessel.
Available by special order in barium impregnated silicone rubber and/or different lengths of reduced diameter
FISCHER CARDIAC CATHETER
Similar to the Pudenz Catheter with the addition of rings around the exterior of the catheter for tissue ingrowth and holding the tip in position. The first encircling ring is 12.5 cm from the tip with three rings spaced at 2.5 cm.
Available in either adult or infant models. The infant model is similar to the Pudenz Cardiac Infant Catheter.
Adult Medium Pressure #850-1340
Adult Low Pressure #850-1341 Adult High Pressure #850-1342 Infant Medium Pressure #850-1345 Infant Low Pressure #850-1346 Infant High Pressure #850-1347
OVERTON CARDIAC CATHETER
This modification of the Pudenz Cardiac Catheter permits direct atrial or venacaval placement in cases where obstruction in the superior inflow channels of the heart prevents the reestablishment of the cardiac catheter by the normal route.
Direct placement through the wall of the right atrium or a retrograde approach via the inferior venacava. The flange allows a portion of the shunt to be sutured in place and assures maintenance of the optimum position of the tip within the atrium. An alternative design utilizes a friction-Lock flange which is adjustable to the desired length and provides the same ease of attachment when an inferior venacava approach to the right atrium is utilized. The catheter passes through the friction-lock flange at a 45° angle to assure a smooth curve of the catheter ascending toward the heart from its entrance in the inferior venacava.
WISE TELESCOPIC CATHETER
This unique catheter designed to elongate with the growth of the infant. It consists of proximal and distal segments with the adjacent ends encased in a cylinder. The X-ray detectable flange ends of these catheters contact the inside of the cylinder and provide a fluid-tight seal; but can move longitudinally if moderate tension applied. The distal segment is identical to the Pudenz Cardiac Catheter with the exception of small projections from the outer surface of the atrium. This provides additional anchoring by tissue in growth and helps prevent the catheter from relocating out of the atrium.
Lengths measured from the distal collar of the telescoping chamber to the distal tip. Medium pressure