Successful retrieval of dislocated inferior vena cava filter using double vascular sheaths docking technology: case report

Zhou, Mi; Qi, Lixing; Gu, Yongquan

doi:10.1186/s12959-021-00309-3

Cited by 2 publications

(2 citation statements)

References 22 publications

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“…Such displacement is unacceptable in clinical treatment. The occurrence of this displacement will bring many complications to the patient, and the displaced IVCF needs to be removed through surgery, which increases the pain of the patient [14,38]. Because of its radial expansion, EPF is rmly xed in the initial position, and in our study, it is an IVCF with the least displacement risk.…”

Section: Discussionmentioning

confidence: 77%

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Numerical simulation and in vitro experimental study of the hemodynamic performance of vena cava filters with helical forms

Huang,

Li,

Liu

et al. 2023

Preprint

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Inferior vena cava filter (IVCF) implantation is a common method of thrombus capture. By implanting a filter in the inferior vena cava (IVC), microemboli can be effectively blocked from entering the pulmonary circulation, thereby avoiding acute pulmonary embolism (PE). Inspired by the helical flow effect in the human arterial system, we propose a helical retrievable IVCF, which, due to the presence of a helical structure inducing a helical flow pattern of blood in the region near the IVCF, can effectively avoid the deposition of microemboli in the vicinity of the IVCF while promoting the cleavage of the captured thrombus clot. It also reduces the risk of IVCF dislodging and slipping in the vessel because its shape expands in the radial direction, allowing its distal end to fit closely to the IVC wall, and because its contact structure with the inner IVC wall is curved, increasing the contact area and reducing the risk of the vessel wall being punctured by the IVCF support structure. We used Ansys Fluent software to conduct unidirectional fluid-structure coupling simulation of four different forms of IVCF, combined with microthrombus capture experiments in vitro, to explore the impact of these four forms of IVCF on blood flow patterns and to evaluate the risk of IVCF perforation and IVCF dislocation. It can be seen from the numerical simulation results that the helical structure does have the function of inducing blood flow to undergo helical flow dynamics, and the increase in wall shear stress (WSS) brought about by this function can improve the situation of thrombosis accumulation to a certain extent. Meanwhile, the placement of IVCF will change the flow state of blood flow and lead to the deformation of blood vessels. In in vitro experiments, we found that the density of the helical support rod is a key factor affecting the thrombus trapping efficiency, and in addition, the contact area between the IVCF and the vessel wall has a major influence on the risk of IVCF displacement.

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Section: Discussionmentioning

confidence: 77%

“…IVCF implantation also needs to consider its ability to capture thrombi and dissolve the captured thrombi immediately, as well as the risk of IVCF displacement [14]. The performance of IVCF is closely related to hemodynamic factors [15].…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation and in vitro experimental study of the hemodynamic performance of vena cava filters with helical forms

Huang,

Li,

Liu

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

Numerical simulation and in vitro experimental study of the hemodynamic performance of vena cava filters with helical forms

Huang,

Li,

Liu

et al. 2024

Sci Rep

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Inferior vena cava filter (IVCF) implantation is a common method of thrombus capture. By implanting a filter in the inferior vena cava (IVC), microemboli can be effectively blocked from entering the pulmonary circulation, thereby avoiding acute pulmonary embolism (PE). Inspired by the helical flow effect in the human arterial system, we propose a helical retrievable IVCF, which, due to the presence of a helical structure inducing a helical flow pattern of blood in the region near the IVCF, can effectively avoid the deposition of microemboli in the vicinity of the IVCF while promoting the cleavage of the captured thrombus clot. It also reduces the risk of IVCF dislodging and slipping in the vessel because its shape expands in the radial direction, allowing its distal end to fit closely to the IVC wall, and because its contact structure with the inner IVC wall is curved, increasing the contact area and reducing the risk of the vessel wall being punctured by the IVCF support structure. We used ANSYS 2023 software to conduct unidirectional fluid-structure coupling simulation of four different forms of IVCF, combined with microthrombus capture experiments in vitro, to explore the impact of these four forms of IVCF on blood flow patterns and to evaluate the risk of IVCF perforation and IVCF dislocation. It can be seen from the numerical simulation results that the helical structure does have the function of inducing blood flow to undergo helical flow dynamics, and the increase in wall shear stress (WSS) brought about by this function can improve the situation of thrombosis accumulation to a certain extent. Meanwhile, the placement of IVCF will change the flow state of blood flow and lead to the deformation of blood vessels. In in vitro experiments, we found that the density of the helical support rod is a key factor affecting the thrombus trapping efficiency, and in addition, the contact area between the IVCF and the vessel wall has a major influence on the risk of IVCF displacement.

show abstract

Successful retrieval of dislocated inferior vena cava filter using double vascular sheaths docking technology: case report

Cited by 2 publications

References 22 publications

Numerical simulation and in vitro experimental study of the hemodynamic performance of vena cava filters with helical forms

Numerical simulation and in vitro experimental study of the hemodynamic performance of vena cava filters with helical forms

Numerical simulation and in vitro experimental study of the hemodynamic performance of vena cava filters with helical forms

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