Catheters
First Claim
1. In a catheter for measuring the pressure along the length of a patient'"'"'s urethra, of the kind having a closed distal end and provided at a distance from said distal end with a lateral outlet for a fluid to be fed in at a constant rate of flow through a passage arranged for connection to a measuring instrument, the invention which consists in that said lateral catheter outlet is formed by an annular gap extending in a plane at right angles to the longitudinal axis of said catheter and into which opens said supply passage for the fluid.
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Accused Products
Abstract
This invention relates to catheters for measuring the pressure along the length of a patient'"'"'s urethra, of the kind having a closed distal end and provided at a distance from said distal end with a lateral outlet for a fluid to be fed in at a constant rate of flow through a passage arranged for connection to a measuring instrument.
According to the invention, the lateral catheter outlet is formed by an annular gap extending in a plane at right angles to the longitudinal axis of the catheter and into which opens the supply passage for the fluid.
Advantageously, the catheter is transversely divided into two parts constituting distal and proximal sections having mutually opposed terminal areas. These terminal areas are connected by a rigid bridging member to form the annular gap, which latter for example has a width of advantageously between 0.2 and 0.5 mm.
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Citations
7 Claims
- 1. In a catheter for measuring the pressure along the length of a patient'"'"'s urethra, of the kind having a closed distal end and provided at a distance from said distal end with a lateral outlet for a fluid to be fed in at a constant rate of flow through a passage arranged for connection to a measuring instrument, the invention which consists in that said lateral catheter outlet is formed by an annular gap extending in a plane at right angles to the longitudinal axis of said catheter and into which opens said supply passage for the fluid.
Specification