5 results about "Arterial catheter" patented technology

This utility model belongs to the field of experimental equipment technology, and discloses an ion monitoring device for a rabbit hepatic encephalopathy experimental model, including: an operating table with a monitoring system installed on it; the monitoring system includes a first base with a first fixing rod fixed in the center and two fixing clips on the first fixing rod; a tension transducer with its input end detachably connected to the fixing clips and a three-way valve detachably connected to the input end, with an endotracheal tube detachably connected to the three-way valve for monitoring respiratory rate; and a pressure transducer with its input end detachably connected to the fixing clip and a three-way valve detachably connected to the input end, with an arterial cannula detachably connected to the three-way valve for monitoring changes in arterial blood pressure, heart rate, and respiratory rate during the progression of rabbit hepatic encephalopathy (early, middle, progressive, and recovery phases), thereby increasing the scientific rigor and repeatability of the experimental operation.

An arterial catheter system comprises a catheter assembly including a catheter hub and an arterial catheter. An arterial catheter system comprises a needle assembly including a needle hub and a guide needle. An arterial catheter system comprises an extension tube coupled to the catheter assembly, and a fluid passage extending through the arterial catheter, catheter hub, and extension tube. The first fluid resistance in a portion of the fluid passage within the extension tube is greater than the second fluid resistance in the fluid passage distal to or proximal to the aforementioned portion of the fluid passage. The extension tube has a length L and an inner diameter D. The geometric coefficient G of the aforementioned portion of the fluid passage. f is L / D 4 It is equivalent to and selected to reduce hemolysis during arterial blood collection.

An arterial catheter system may include a catheter assembly that may include a catheter adapter. An arterial catheter system may include an arterial catheter extending from the distal end of the catheter adapter. An arterial catheter system may include a needle assembly that may include a needle hub and an introduction needle. An arterial catheter system may include an arterial blood shielding device coupled to the catheter assembly. An arterial catheter system may include an arterial catheter, a catheter adapter, and a fluid path within the arterial blood shielding device. A first fluid resistance in the portion of the fluid path within the arterial blood shielding device may be greater than a second fluid resistance in the fluid path distal to that portion of the fluid path.