referring now to the drawings , identical numerals are used for identical parts in each of the figures to aid in the description of the suture folder of the invention . fig1 shows the 3 - panel foldable folder of the invention in unfolded position . the first panel 1 is attached along fold line 16 to the second panel 3 , has chamfered upper corners 10 , a u - shaped slot 9 , an incised slit 8 , and a cut out corner 14 for clearance with the other panels when the folder is folded together . the lower part 2 of panel 1 has a fold line 19 along which lower part 2 is folded back on the remainder of panel 1 to form a suture - retention bottom to the folded folder . the second panel 3 also has chamfered upper corners 10 , a cut tab 11 , an incised aperture 13 , a u - shaped slot 12 spaced to be in register with slot 9 of panel 1 when the panels are folded together , an incised interlocking tab 5 for interlocking with similar tab 5 on the third panel 4 , punched out aperture 15 for registration means for loading of suture in the folder , and fold line 20 where the third panel 4 joins panel 3 . the third panel 4 is chamfered at corner 10 , is cut away along sides 7 and 6 so as to not cover the needle access slots 9 and 12 when the folder is folded together around a suture and needle and to provide an edge 6 for insertion in incised slit 8 on full closure , and an incised interlocking tab 5 which interlocks with tab 5 on panel 3 at closure . a suture 18 is shown laid out in sinusoidal configuration on panel 3 past register aperture 15 and attached to needle 17 , which is held in place behind tab 11 across slot 12 and behind the edge of slot 12 into aperture 13 . tab 11 and the portion 21 of panel 3 which crosses the needle 17 between slot 12 and aperture 13 exert a holding force on the needle 17 when held in panel 3 and when the folder is closed for packaging . fig2 gives in close detail the relationship between needle 17 and the parts of panel 3 which hold it firmly in place : tab 11 , slot 12 , aperture 13 , and panel portions 21 and 22 , all of which together combine to exert the holding force . fig3 shows a suture in place on panel 3 with needles 17 affixed at each end and coiled in sinusoidal configuration . fig4 shows an alternative embodiment of the invention designed to be suitable for sutures 18 bearing very small needles 17 on one or both ends . tab 11 remains the same , but a curved incised slit 13a is used in place of aperture 13 and the shank ends 17a of the small needles 17 fall outside of tab 11 which now holds the suture 18 just behind shank 17a . to close the suture folder of fig1 with suture 18 and needle 17 in place , the lower portion 2 of panel 1 is folded upwardly along fold line 19 flat against panel 1 , panel 1 folded along fold line 16 inwardly onto the face of panel 3 to cover suture 18 and needle 17 , then panel 4 is folded inwardly to cover panel 1 , the edge 6 of panel 4 is tucked into slit 8 , and interlocking edge tabs 5 from panels 3 and 4 are interlocked to complete the closing process . fig5 shows the appearance of the front side of the folded suture folder and fig6 shows the back side of the folded suture folder which can be described as self - locking . it can be seen that needles 17 are easily visible and accessible from either side of the folder and can be easily grasped in the slot provided and easily withdrawn along with the attached suture 18 . the folder need not be opened for suture removal , as shown in fig7 . after closure is complete , the folder is inserted in a preformed inner envelope 23 as seen in fig8 and envelope 23 sealed . envelope 23 is formed from materials known in the art and usually bears any printed indicia as to source , identity , instructions for use , etc . the chamfered corners 10 of the holder aid in the insertion process . the inner envelope 23 is then sealed in a clear heat - sealable outer envelope 24 to protect the entire contents and may then be cartoned and sterilized , for instance with ethylene oxide gas . fig9 shows an inner envelope 23 partially peeled back for ready presentation of needle 17 from slot 12 to the user . the suture folder may be manufactured from medical grades of paper board of an appropriate body or stiffness , such as tag board , solid bleached paper which may be optionally clay coated , or some forms of thin plastic sheeting , such as those made from polyethylene . the inner and outer protective envelopes are usually of heat sealable thermoplastic polymers , such as for instance polyethylene , polyvinyl acetate - ethylene copolymer , or tyvek ( dupont de nemours trademark ), diolefin polymer , which may also be in the form of composites with paper , aluminum foil , or other appropriate materials . it is preferred that the inner envelope be a composite bearing any required printed indicia and that the outer envelope be of a clear heat - sealable thermoplastic material . the porous expanded polytetrafluoroethylene utilized as suture material is that described in the patents listed above . having described the invention in detail and many of the ways it may be practiced , it will be apparent to those skilled in the art that many variations , modifications , and extensions of the basic principles embodied may be made without departing from the spirit or scope of the invention and that the foregoing exemplifications and descriptions are not intended to be limiting of the scope of the invention .
an improved package for needled sutures comprising a 3 - panel folded paper folder for ptfe sutures wherein the suture is arranged in a sinusoidal configuration within the folder and the needle held firmly in place across a u - shaped slot at the top of the folder which allows ready access from either side of the folder when the protective envelopes are opened .