| CPC A61M 39/284 (2013.01) [F16K 7/063 (2013.01); A61M 39/287 (2013.01); F16K 7/066 (2013.01)] | 8 Claims |

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1. A pinch clamp to clamp a medical tubing, comprising:
a lower arm comprising a lower clamping surface, wherein the lower clamping surface comprises an upwardly protruding portion having a first curve, wherein the lower clamping surface further comprises an upwardly protruding proximal portion;
an upper arm comprising an upper clamping surface, wherein the upper clamping surface comprises a downwardly protruding portion having a second curve, wherein the upper arm further comprises a recessed portion proximate and proximal to the downwardly protruding portion, wherein the upwardly protruding proximal portion is configured to insert into the recessed portion when the pinch clamp is in an engaged position, wherein the first curve of the upwardly protruding portion is elongated relative to the second curve of the downwardly protrusion portion, wherein the upwardly protruding portion is aligned with the downwardly protruding portion to form a pinch point when the pinch clamp is in an engaged position; and
a hinge disposed between the lower arm and the upper arm.
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