A tube clamp assembly comprising: a first tube clamp including a tube holding portion for holding a tube, the tube holding portion of the first tube clamp including a first end and a second end, a first leg extending from and integral with the first end of the tube holding portion of the first tube clamp, and a second leg extending from and integral with the second end of the tube holding portion of the first tube clamp, the second leg defining a catch that is integral with the second leg of the first tube clamp, wherein the first leg is configured to be captured by the catch of the second leg of the first tube clamp to occlude the first tube; and a second tube clamp including a tube holding portion for holding a second tube, the tube holding portion of the second tube clamp including a first end and a second end, a first leg extending from and integral with the first end of the tube holding portion of the second tube clamp, and a second leg extending from and integral with the second end of the tube holding portion of the second tube clamp, the second leg defining a catch that is integral with the second leg of the second tube clamp, wherein the first leg of the second tube clamp is configured to be captured by the catch of the second leg of the second tube clamp to occlude the second tube; and wherein the first and second tube clamps (10a, 10b) are arrangeable such that (i) the catch of the second leg of the first tube clamp directly contacts and interlocks with the first leg of the second tube clamp and (ii) the catch of the second leg of the second tube clamp directly contacts and interlocks with the first leg of the first tube clamp to preclude the first tube clamp from occluding the first tube, and the second tube clamp from occluding the second tube. a first tube clamp including a tube holding portion for holding a tube, the tube holding portion of the first tube clamp including a first end and a second end, a first leg extending from and integral with the first end of the tube holding portion of the first tube clamp, and a second leg extending from and integral with the second end of the tube holding portion of the first tube clamp, the second leg defining a catch that is integral with the second leg of the first tube clamp, wherein the first leg is configured to be captured by the catch of the second leg of the first tube clamp to occlude the first tube; and a tube holding portion for holding a tube, the tube holding portion of the first tube clamp including a first end and a second end, a first leg extending from and integral with the first end of the tube holding portion of the first tube clamp, and a second leg extending from and integral with the second end of the tube holding portion of the first tube clamp, the second leg defining a catch that is integral with the second leg of the first tube clamp, wherein the first leg is configured to be captured by the catch of the second leg of the first tube clamp to occlude the first tube; and a second tube clamp including a tube holding portion for holding a second tube, the tube holding portion of the second tube clamp including a first end and a second end, a first leg extending from and integral with the first end of the tube holding portion of the second tube clamp, and a second leg extending from and integral with the second end of the tube holding portion of the second tube clamp, the second leg defining a catch that is integral with the second leg of the second tube clamp, a tube holding portion for holding a second tube, the tube holding portion of the second tube clamp including a first end and a second end, a first leg extending from and integral with the first end of the tube holding portion of the second tube clamp, and a second leg extending from and integral with the second end of the tube holding portion of the second tube clamp, the second leg defining a catch that is integral with the second leg of the second tube clamp, wherein the first leg of the second tube clamp is configured to be captured by the catch of the second leg of the second tube clamp to occlude the second tube; and wherein the first and second tube clamps (10a, 10b) are arrangeable such that (i) the catch of the second leg of the first tube clamp directly contacts and interlocks with the first leg of the second tube clamp and (ii) the catch of the second leg of the second tube clamp directly contacts and interlocks with the first leg of the first tube clamp to preclude the first tube clamp from occluding the first tube, and the second tube clamp from occluding the second tube.