Vascular sheath with temperature monitoring probe
First Claim
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1. An intravascular sheath/temperature probe assembly comprising:
- a tubular sheath having a proximal end, a distal end and a lumen which extends longitudinally therethrough, said sheath being insertable into a blood vessel; and
,an elongate temperature probe having a distal end and a proximal end, said temperature measuring probe being insertable, distal end first, into the lumen of the sheath and useable, when inserted into the lumen of the sheath, to sense the temperature of blood flowing through the blood vessel into which the sheath is inserted;
wherein the temperature probe comprises first and second temperature sensors which generate first and second temperature signals indicative of the temperature of the blood flowing through the blood vessel into which the intravascular sheath/temperature probe assembly is nserted;
wherein a first hub is positioned on the proximal end of the sheath and a second hub is positioned on the proximal end of the temperature probe;
wherein a portion of the second hub is receive first hub when the temperature probe is inserted into the sheath;
wherein helical threads arc formed on the first hub and second hub such that the first and second hubs may be threadably engaged when the temperature probe is inserted into the lumen of the sheath, thereby deterring unintentional withdrawal of the temperature probe from the sheath; and
a controller which receives the first and second temperature signals and determines whether any difference between the first and second temperature signals exceeds a predetermined maximum acceptable temperature difference.
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Abstract
An introducer sheath/temperature probe assembly that is insertable into a blood vessel of a human or veterinary patent to measure the temperature of blood flowing through that blood vessel. The introducer sheath/temperature probe assembly may be used in conjunction with an indwelling heat exchange catheter system to warm or cool all or a portion of the patient'"'"'s body to a desired target temperature and to maintain such target temperature for a desired period of time.
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Citations
15 Claims
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1. An intravascular sheath/temperature probe assembly comprising:
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a tubular sheath having a proximal end, a distal end and a lumen which extends longitudinally therethrough, said sheath being insertable into a blood vessel; and
,an elongate temperature probe having a distal end and a proximal end, said temperature measuring probe being insertable, distal end first, into the lumen of the sheath and useable, when inserted into the lumen of the sheath, to sense the temperature of blood flowing through the blood vessel into which the sheath is inserted; wherein the temperature probe comprises first and second temperature sensors which generate first and second temperature signals indicative of the temperature of the blood flowing through the blood vessel into which the intravascular sheath/temperature probe assembly is nserted; wherein a first hub is positioned on the proximal end of the sheath and a second hub is positioned on the proximal end of the temperature probe; wherein a portion of the second hub is receive first hub when the temperature probe is inserted into the sheath; wherein helical threads arc formed on the first hub and second hub such that the first and second hubs may be threadably engaged when the temperature probe is inserted into the lumen of the sheath, thereby deterring unintentional withdrawal of the temperature probe from the sheath; and a controller which receives the first and second temperature signals and determines whether any difference between the first and second temperature signals exceeds a predetermined maximum acceptable temperature difference. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification