Key result
A novel parallel aortic clamper significantly reduced the required force for cross-clamping and aortic displacement compared to conventional clampers in an in vitro test using bovine aortas.
Why the study?
Does a novel parallel aortic clamper reduce the force required for cross-clamping and maximum aortic displacement compared to conventional clampers in bovine aorta specimens?
Does a novel parallel aortic clamper reduce the force required for cross-clamping and maximum aortic displacement compared to conventional clampers in bovine aorta specimens?
A novel parallel aortic clamper demonstrates improved biomechanical performance with reduced force requirements and less aortic displacement in an in vitro bovine model, suggesting potential utility in minimally invasive cardiac surgery.
Hypothesis-generating for gentler aortic clamping in minimally invasive surgery; leaves open human translation and clinical outcomes.
One of the main procedures in the most minimally invasive cardiothoracic surgery is clamping the ascending aorta to disconnect the heart from circulation. In this paper, a new aortic clamping instrument which is applicable in minimally invasive cardiac surgery has been presented. The instrument consists of a parallelogram mechanism for opening and closing the jaws, a detachable holder with a two degree of freedom joint that makes the precise position and orientation of the jaws and leaves the clamping component in the patient’s body to make the inserting port free, and a handle for easy manipulation. In vitro test has been performed to evaluate the performance of the clamper compared to the conventional clampers. For this purpose, the force required for aortic cross-clamping and the maximum aortic displacement have been studied in four groups including parallel clamper and conventional clamper with angles of 1[Formula: see text], 2[Formula: see text], and 3[Formula: see text] between jaws, with 10 bovine aorta specimens in each group. These experiments show that the amount of required force for cross-clamping by using the parallel clamper, is statistically significant ([Formula: see text]) compared with the conventional clampers. Also, the increase of angle between jaws makes a significant increase in the percentage of aortic displacement.
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Farkoush et al. (2016) studied Minimally invasive cardiac surgery (n=40). Novel parallel aortic clamper vs. Conventional clampers was evaluated on Force required for aortic cross-clamping and maximum aortic displacement. A novel parallel aortic clamper significantly reduced the required force for cross-clamping and aortic displacement compared to conventional clampers in an in vitro test using bovine aortas.
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