referring now to fig1 , there is shown a side view of a typical surgical clip 10 that is currently in use in carrying out surgical procedures . as can be seen , the surgical clip 10 has a pair of longitudinally extending members 12 , 14 each of which has a distal end 16 , 18 respectively and proximal ends 20 , 22 . at the proximal ends 20 , 22 there is a biasing element in the form of a coiled spring 24 that provides a bias tending to draw the distal ends 16 , 18 toward each other into the closed position as illustrated in fig1 . at or proximate to the distal ends there is located clamping surface regions 26 , 28 where the particular blood vessel is actually trapped between the longitudinally extending members 12 , 14 to occlude that vessel . the coiled spring 24 includes actuating legs 30 , 32 where the user can push inwardly on the actuating legs 30 , 32 and separate the clamping surface regions 26 , 28 against the bias of the coiled spring 24 . as such , the surgeon can simply push inwardly on the actuating legs 30 , 32 to separate the clamping surface regions 26 , 28 to an open position , locate the blood vessel to be occluded within the spaced apart clamping surface regions 26 , 28 and then release the pressure on the actuating legs 30 , 32 to bring the mating clamping surface regions 26 , 28 together such that the bias of the coiled spring 24 clamps about the blood vessel to occlude that vessel . the surgical clip 10 presently in use is provided to the surgeon in various lengths for use in reaching and occluding a particular blood vessel depending upon its size and location . as can be seen , the configuration of the longitudinally extending members 12 , 14 is constant or smooth from the distal ends 16 , 18 to the proximal ends 20 , 22 although there may be a curvature to longitudinally extending members 12 , 14 along their length . turning now to fig2 a - d and fig3 a - d there is shown , side views and perspective views , respectively , of various surgical clips constructed in accordance with the present invention . accordingly , taking fig2 a and 3a initially , there can be seen a surgical clip 34 that includes a pair of longitudinally extending members 36 , 38 with both having distal ends 40 , 42 and proximal ends 44 , 46 . at the proximal ends 44 , 46 , there is a coiled spring 48 and a pair of actuating legs 50 , 52 . while a coiled spring is shown , it is noted that other biasing means can be used to provide the desired bias on the longitudinally extending members 36 , 38 , including , but not limited to , a coil or leaf spring , materials having inherent flexibility or memories , and the use of elastomers such as a flexible sleeve that encircle the extending members of the clip . at or proximate to the proximal ends 44 , 46 each of the longitudinally extending members 36 , 38 has a first region 54 , 56 extending from the coiled spring 48 that is a generally straight configuration and there are also clamping surface regions 58 , 60 that extend from the first regions 54 , 56 and when the vascular vessel is located in occluding the vessel during the use of the surgical clip 34 . as can now be seen , the mating clamping surface regions 58 , 60 extend from the first regions 54 , 56 at a less than orthogonal offset angle a , that is , less than 90 degrees . in fig2 a and 3a , that angle is about 30 degrees and the overall length l of the surgical clip 34 is about 0 . 25 inches to about 1 . 0 inches . in fig2 b and 3b , the surgical clip 62 has an angle a of about 45 degrees and the same range of lengths as with the embodiment of fig2 a and 2b . the actual angle may be any angle smaller than an orthogonal angle and preferably , the angle a may range from about 30 degrees to about 60 degrees , while the clamping surface regions 58 , 60 are shown having a curvature , they , as well as the other regions of the longitudinally extending members 36 , 38 may also be straight in configuration and still be within the purpose and intent of the present invention . in fig2 c and 3c , the angle a is again about 30 degrees with the surgical clip 64 having a greater length , that is , within the range of about 1 . 0 inches to about 2 . 0 inches and in fig2 d and 3d the angle a of the surgical clip 66 is about 45 degrees and the length is within the same range as the embodiment of fig2 c and 3c . accordingly , as now can be understood , in each of the surgical clips 34 , 62 , 64 , and 66 the clamping surface regions 58 , 60 extend from the first regions 54 , 56 at angles smaller than orthogonal angles and there are differing lengths that are available to the surgeon in occluding a particular blood vessel . in addition the angles a of the various lips can be between about 10 degrees to 60 degrees , and preferably between about 45 and 60 degrees . as such , the surgeon has a selection of surgical clips to use in any particular procedure depending upon the size and location of the blood vessel that is desired to be occluded . as a further option in the selection of a particular surgical clip , taking the surgical clip 34 of fig2 a and 3a as an example , the amount of force tending to close the longitudinally extending members 36 , 38 , that is , the squeezing force or pressure applied against a blood vessel may also be varied . to change the amount of force , the coiled spring 48 can be constructed by a number of differing ways . one means would be to alter the coiled spring 48 to make it more robust such as by increasing its size or be making it out of a stiffer material such that the spring bias is increased . as an alternative method , the cross - section of the clip geometry can be modified to minimize contact stresses at the clamping surface regions where the vessel is clamped , that is , the actual point of contact with the vessel can be rounded , sharp edged or some configuration that varies in between . also a protective sleeve can be added or the surgical clip can be manufactured out of a pliable material such as a polycarbonate plastic . if a protective coating or plastic material is used , the surgical clip would then be a single use device to avoid subjecting the plastic material to multiple sterilization processes . in any event , by providing the surgeon with surgical clips having differing degrees of closing pressure , the surgeon can select the surgical clip depending upon the state or condition of the particular blood vessel that is being occluded . the variable pressure is preferred to be within 70 and 120 psi . turning now to fig4 a , 4b and 4 c , there is shown a top view , a side view and a perspective view , respectively , of a multi - vessel surgical clip 68 constructed in accordance with the present invention . as can be seen , the multi - vessel surgical clip 68 is a long l - shaped configuration having a pair of longitudinally extending members 70 , 72 with distal ends 74 , 76 and proximal ends 78 , 80 . as with the other embodiments , at the proximal ends 78 , 80 , there is a coiled spring 82 and a pair of actuating legs 84 , 86 . at or proximate to the proximal ends 78 , 80 , each of the longitudinally extending members 70 , 72 has a first region 88 , 90 extending from the coiled spring 82 in a generally straight configuration and there are also clamping surface regions 92 , 94 that extend from the first regions 88 , 90 and when certain vascular vessels are located in occluding those vessels during the use of the multi - vessel surgical clip 68 . in this embodiment , the angle b is a relatively sharp angle and may be about 80 degrees approaching an l - shape of a ninety degree angle . the angle b , however , can be any angle ranging from about 10 degrees up to 80 degrees . in addition , the length of the multi - vessel surgical clip 68 can range from about 0 . 5 inches to about 2 . 5 inches . turning now to fig5 , there is shown a schematic view of the multi - vessel surgical clip 68 of fig4 a - 4c and illustrating the use of the device . as can now be seen , the multi - vessel clip 68 actually can occlude a plurality of blood vessels identified in fig5 as a major blood vessel 96 , such as the carotid artery , and two smaller blood vessels 98 , 100 that branch off from the major blood vessel 96 . as such the major blood vessel 96 is occluded by being squeezed within the first regions 88 , 90 and the smaller blood vessels 98 , 100 are occluded by being squeezed within the mating clamping surface regions 92 , 94 . thus , by the particular length and configuration of the multi - vessel surgical clip 68 , the surgeon can occlude all three vessels and avoid the need for three separate surgical clips as is currently used in such procedure . the particular procedure for which the multi - vessel surgical clip 68 is intended is for the occluding of a carotid artery and , to aid in the clamping pressure and effectiveness , there may be a plastic or rubber sleeve or covering over the multi - vessel surgical clip 68 . turning now to fig6 there is shown a standard surgical clip set 102 that is conventionally used for various surgical procedures to provide individual surgical clips 104 to the surgeon . in the conventional surgical clip set 102 , there are a plurality of surgical clips 104 of differing sizes in order to provide all of the necessary tools to the surgeon , without regard to the particular surgical procedure and the need for very specific surgical clips for a specific surgical procedure . therefore , at the present , the surgical clip set 102 is generally a cardboard backing on which the various surgical clips 104 are mounted . turning now to figs ., 7 a and 7 b , there is shown surgical clip sets 106 , 108 , respectively , arranged in accordance with the present invention and where the specific surgical clips are predetermined in accordance with the particular procedure being carried out . the surgical clips are carried by a container , such as a tray 110 , and within which there may be receptacles formed therein by a pliable material such as styrofoam into which each surgical clip is positioned . thus , in each tray 110 , there is a predetermined plurality of the surgical clips and , in each case , the quantity and type of surgical clips are pre - selected in accordance with a corresponding particular surgical procedure and the clips can be of the type previously described herein . as examples , the surgical clip set 106 as shown in fig7 a can have at least two surgical clips 112 of a predetermined size and at least three other surgical clips 114 of a smaller size than the predetermined size of the surgical clips 112 . such a set is particularly suited for a surgical procedure known as a carotid endarectomy and thus , the surgeon has a customized set of a predetermined , selected quantity and type of surgical clips available for the operation and need not select from a large quantity of surgical clips where many may simply not even be suitable for the particular operation , thereby reducing the time for selection and easing the selection process of the surgeon who is already fully occupied with the surgical procedure . as another example , with the surgical clip set 108 of fig7 b , there can be at least four surgical clips 116 of a predetermined size and at least four other surgical clips 118 of a smaller size than the predetermined size of the surgical clips 116 . such a surgical clip set is particularly suited for a surgical procedure known as a femoral popliteal bypass and thus , again , the surgeon has a customized set of a predetermined , selected quantity and type of surgical clips available for the operation . it should be noted that the aforesaid examples are merely two of many surgical clip sets that can be provided to the surgeon with a predetermined plurality of surgical clips of differing sizes and quantities that are pre - selected for a particular operation so that the surgeon has a convenient and customized set of surgical clips that are specially predetermined for a specific surgical procedure . thus the surgical clips shown and described in the present specification can by used for a number of procedures and among those procedures are the following : 1 . carotid endarectomy 2 . endarectomy of the upper or lower limb arteries 3 . femoral - popliteal bypass 4 . aorta - renal bypass 5 . aorta - iliac - femoral bypass 6 . embolectomy , thrombectomy of the carotid artery or jugular vein 7 . embolectomy , thrombectomy of the upper or lower limb vessels 8 . resection of the carotid artery or jugular vein with anastomosis 9 . resection of the upper or lower limb vessels with anastomosis 10 . angiectomy of the carotid artery or jugular vein 11 . angiectomy of the upper or lower limb arteries of veins 12 . arteriovenostomy for renal dialysis 13 . revision or removal of arteriovenous shunt for renal dialysis 14 . reimplantation of aberrant renal vessel 15 . trauma surgery . other procedures , not listed herein may , of course , be carried out with the aid of one of more of the vascular clips described herein . an additional feature of the invention can be with the use of color coding of the individual surgical clips or sets of clips , that is , the surgical clips can be color coded in accordance with one or more of their closing pressure , size , type and use . thus , a surgical clip having a particular closing pressure can therefore be a common color to readily identify to the surgeon that closing pressure and the same color coding can also be used to identify the size of a particular clip such as having all small clips of the same color so that the surgeon can quickly identify the desired surgical clip . the color coding principle can also be applied to sets of surgical clips where a set , for example , of surgical clips to be used for a carotid endarectomy could all be the same color so that the surgeon could immediately recognize the set of surgical clips intended and customized for that specific procedure . it should be readily understood that reference to color coding of a surgical clip is meant to cover including such color on at least a portion of the surgical clip . those skilled in the art will readily recognize numerous adaptations and modifications which can be made to the surgical clips and methods of the present invention which will result in an improved surgical clip and method , yet all of which will fall within the scope and spirit of the present invention as defined in the following claims . accordingly , the invention is to be limited only by the following claims and their equivalents .