to expandable portion 90 the operation of the control member 25 and the expandable portion 90 will be explained further in the proceeding sections referring now to fig4 and 5 the expandable portion 90 may be defined by a plurality of outer struts illustrated herein as 134 a 134 b 134 c and 134 d which may be separated by longitudinally extending slits 135 a 135 b 135 c and 135 d 135 c and 135 d are illustrated in fig7 in the present embodiment the expandable portion is defined by four struts terminated in an end cap 138 the end cap 138 may be in communication with the control member 40 alternative embodiments are contemplated that contain any number of a plurality of struts as illustrated in the figure the struts may contain an elongated depression as can be seen at 160 near the midpoint of struts 134 a and 134 b an elongated depression may be located on the other struts but is not visible in the present figures the elongated depressions 160 may be configured such the depressed area remains substantially parallel to guide wire 152 when the expandable portion is in the open position the elongated depressions 160 may be configured to receive a medical treatment device 131 in other exemplary embodiments of the present invention there may be no such depression or there may be an elevation the struts 134 a 134 b 134 c and 134 d may be configured to receive a plurality of medical treatment device.