A device for use in a body lumen comprising: a central wire comprising a proximal end and a distal end thereof; a plurality of engaging elements (65, 67, 90) comprising a distal engaging element, a proximal engaging element, and one or more middle engaging element, each of the plurality of the engaging elements (65, 67, 90) being associated with the central wire; wherein each of the plurality of engaging elements (65, 67, 90) comprises a distal end and a proximal end thereof; the distal engaging element is most distally located among the plurality of the engaging elements (65, 67, 90) and fixed to a distal tip of the central wire; the proximal engaging element is most proximally located among the plurality of the engaging elements (65, 67, 90) and can freely slide on the central wire; and the one or more middle engaging element is located between the distal and proximal engaging elements and can freely slide on the central wire; a flexible connection wire (100, 190) that associates with the proximal engaging element and at least one more engaging element, said flexible connection wire (100, 190) configured for setting spaces between the associated engaging elements (65, 67, 90) apart at a pre-set distance d; and a proximal end control element that is located proximal to the proximal engaging element, wherein the proximal end of the proximal engaging element is fixed at the proximal end control element; wherein the device has an open state including spaces between each adjacent engaging element (65, 67, 90) that are fully open the distance d and a closed state including spaces between each adjacent engaging element (65, 67, 90) shortened from the distance d to a distance d1 for the purpose of holding, cinching or grabbing an occlusion or clot. a central wire comprising a proximal end and a distal end thereof; a plurality of engaging elements (65, 67, 90) comprising a distal engaging element, a proximal engaging element, and one or more middle engaging element, each of the plurality of the engaging elements (65, 67, 90) being associated with the central wire; wherein each of the plurality of engaging elements (65, 67, 90) comprises a distal end and a proximal end thereof; the distal engaging element is most distally located among the plurality of the engaging elements (65, 67, 90) and fixed to a distal tip of the central wire; the proximal engaging element is most proximally located among the plurality of the engaging elements (65, 67, 90) and can freely slide on the central wire; and the one or more middle engaging element is located between the distal and proximal engaging elements and can freely slide on the central wire; the distal engaging element is most distally located among the plurality of the engaging elements (65, 67, 90) and fixed to a distal tip of the central wire; the proximal engaging element is most proximally located among the plurality of the engaging elements (65, 67, 90) and can freely slide on the central wire; and the one or more middle engaging element is located between the distal and proximal engaging elements and can freely slide on the central wire; a flexible connection wire (100, 190) that associates with the proximal engaging element and at least one more engaging element, said flexible connection wire (100, 190) configured for setting spaces between the associated engaging elements (65, 67, 90) apart at a pre-set distance d; and a proximal end control element that is located proximal to the proximal engaging element, wherein the proximal end of the proximal engaging element is fixed at the proximal end control element; wherein the device has an open state including spaces between each adjacent engaging element (65, 67, 90) that are fully open the distance d and a closed state including spaces between each adjacent engaging element (65, 67, 90) shortened from the distance d to a distance d1 for the purpose of holding, cinching or grabbing an occlusion or clot.