Tourniquet cuff with improved pneumatic passageway
First Claim
Patent Images
1. A tourniquet cuff comprising:
- an inflatable bladder having a width dimension at a port location and a length dimension sufficient for encircling a patient'"'"'s limb at a desired location;
a port attached to the bladder at the port location and releasably connectable to a tourniquet instrument, wherein the port includes a pneumatic passageway that enables the inflatable bladder to communicate pneumatically with the connected tourniquet instrument; and
an indicator applied to the cuff and reactive to an agent that is capable of affecting the integrity of the pneumatic passageway and for producing an indication if the agent reaches a predetermined level.
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Accused Products
Abstract
A tourniquet cuff has minimal flow restrictions within its pneumatic passageway under normal operating conditions, has a substantially reduced likelihood of partial or complete obstructions or interruptions of the pneumatic passageway under foreseeable operating conditions, can indicate exposure of the cuff to external agents that are capable of affecting the integrity of the pneumatic passageway before use, and can be manufactured economically.
106 Citations
21 Claims
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1. A tourniquet cuff comprising:
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an inflatable bladder having a width dimension at a port location and a length dimension sufficient for encircling a patient'"'"'s limb at a desired location;
a port attached to the bladder at the port location and releasably connectable to a tourniquet instrument, wherein the port includes a pneumatic passageway that enables the inflatable bladder to communicate pneumatically with the connected tourniquet instrument; and
an indicator applied to the cuff and reactive to an agent that is capable of affecting the integrity of the pneumatic passageway and for producing an indication if the agent reaches a predetermined level. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A tourniquet cuff having an improved pneumatic passageway, comprising:
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an inflatable bladder having a bladder length sufficient for encircling a patient'"'"'s limb at a desired location, port tubing communicating pneumatically with the inflatable bladder and having a port tubing end, a port tubing length and a substantially cylindrical outer surface that contains a pneumatic passageway of predetermined cross-sectional area along the port tubing length and through the port tubing-end, and a port connector configured for establishing a pneumatic connection between the port tubing and a tourniquet instrument, wherein the pneumatic connection established by the port connector has a cross-sectional area that is not less than the predetermined cross-sectional area of the pneumatic passageway. - View Dependent Claims (11, 12)
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13. A tourniquet cuff having an improved pneumatic passageway, comprising:
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an inflatable bladder having a bladder width and having a bladder length sufficient for encircling a patient'"'"'s limb at a desired location, a port communicating pneumatically with the bladder and including port tubing, wherein the port tubing is formed of thermoplastic material having a substantially cylindrical outer surface, a port tubing length greater than the bladder width, a bladder end and a port tubing end, wherein the port tubing contains a pneumatic passageway between the bladder end and the port tubing end, and wherein the passageway has a predetermined non-circular cross-sectional shape. - View Dependent Claims (14, 15, 16)
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17. A tourniquet cuff having an improved pneumatic passageway, comprising:
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a first layer having a width dimension, a length dimension and a sealing surface, a second layer having a width dimension, a length dimension and a sealing surface positioned against the sealing surface of the first layer and sealed around a perimeter to form an inflatable bladder within the perimeter, a port having a bladder sealing flange sealed to the first layer sealing surface around the flange to establish a pneumatic passageway from a distal port end outside the first layer through the port and into the bladder along a channel formed in the flange. - View Dependent Claims (18, 19)
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20. A tourniquet cuff having an improved pneumatic passageway, comprising:
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a first layer of flexible thermoplastic material having a first layer sealing surface, a second layer of flexible thermoplastic material having a second layer sealing surface facing the first layer sealing surface, a perimeter seal establishing a gas-tight seal between the first layer sealing surface and the second layer sealing surface around a predetermined perimeter to form an inflatable bladder within the perimeter seal, wherein the perimeter seal includes a bead protruding into the inflatable bladder and having a bead thickness greater than a predetermined bead thickness to separate the first sealing surface from the second sealing surface, thereby establishing a bladder pneumatic passageway near the bead. - View Dependent Claims (21)
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Specification