Physiologic tourniquet for intravenous regional anesthesia
First Claim
Patent Images
1. Safety apparatus for dual cuff tourniquet system, comprising:
- an inflatable and deflatable first cuff;
an inflatable and deflatable second cuff;
monitoring means for monitoring pressure in the first and second cuffs;
control means for permitting an operator to initiate inflation of the first and second cuffs above a minimum pressure level, and for permitting an operator to initiate deflation of the first and second cuffs; and
safety means connected to the monitoring means and to the control means and dependent upon the level of pressure in the first cuff for preventing deflation of the second cuff if the pressure level in the first cuff is beneath the minimum pressure level and for allowing deflation of the second cuff if the pressure level in the first cuff is not beneath the minimum pressure level.
2 Assignments
0 Petitions
Accused Products
Abstract
A physiologic tourniquet includes a safety interlock system for detecting any potentially hazardous attempt to change tourniquet cuff pressure during a procedure involving the use of two cuffs for intravenous regional anesthesia. The attempt to change pressure is prevented until the operator provides a timely and separate confirmation action.
-
Citations
15 Claims
-
1. Safety apparatus for dual cuff tourniquet system, comprising:
-
an inflatable and deflatable first cuff; an inflatable and deflatable second cuff; monitoring means for monitoring pressure in the first and second cuffs; control means for permitting an operator to initiate inflation of the first and second cuffs above a minimum pressure level, and for permitting an operator to initiate deflation of the first and second cuffs; and safety means connected to the monitoring means and to the control means and dependent upon the level of pressure in the first cuff for preventing deflation of the second cuff if the pressure level in the first cuff is beneath the minimum pressure level and for allowing deflation of the second cuff if the pressure level in the first cuff is not beneath the minimum pressure level. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
-
14. A method for safely deflating cuffs in a dual cuff tourniquet apparatus that can be manipulated by an operator to separately initiate inflation and deflation of both of the cuffs, comprising the steps of:
-
monitoring pressure levels in the first and second cuffs; detecting the operator'"'"'s attempt to initiate deflation of the second cuff while the pressure level in the first cuff is beneath a minimum pressure level; and preventing deflation of the second cuff in the absence of the operator'"'"'s manipulation of the apparatus to confirm the detected attempt to initiate deflation of the second cuff only if the pressure level in the first cuff is beneath the minimum pressure level. - View Dependent Claims (15)
-
Specification