referring to fig1 there is shown , generally at 10 , the instrument protector of the present invention . in the preferred embodiment of the instrument protector 10 , the support member 12 is made from a semi - rigid material such as paper , cardboard , plastic or any other sheet stock which can withstand sterilization conditions . the support member 12 is generally rectangular in shape , but it may be formed with a taper 11 at one end of the support member 12 to facilitate insertion of the instrument protector into a sterilization envelope such as of the type disclosed in u . s . pat . no . 3 , 604 , 616 . as can be seen in both fig1 and fig2 the support member 12 is constructed with die cut slits 30 , 32 , 34 and 36 . slits 30 and 32 are cut in order to form an upper retaining strap 22 . likewise , slits 34 and 36 are cut to form a lower retaining strap 24 . in another embodiment of the instrument protector as shown in fig5 and fig6 the lower retaining strap 24 can be eliminated . also , in place of the slits 30 and 32 , the support member 12 can be die cut with generally parallel slots 86 and 88 to form a retaining strap 90 . as seen in fig5 or fig6 slots 86 and 88 can be formed with respective areas of increased width 92 and 94 to further facilitate placement of a medical instrument under retaining strap 90 on the support member 12 . the flap 18 , shown in both fig1 and fig2 is formed by a die cut along the line 26 . as seen in another embodiment of the present invention in fig5 and 6 , flap 18 can also be formed by a u - shaped die cut slot 80 . regardless whether flap 18 is formed as shown in fig1 and 2 or as shown in fig5 and 6 , its function is to immobilize a jointed instrument in a blades spread configuration for a purpose to be subsequently discussed in greater detail . as best seen in fig1 and 2 , support member 12 serves as a substratum for the chemical indicators 28a and 28b which can be applied to the support member 12 by any means well known in the art . for the preferred embodiments , indicator 28a is a gas sensitive ink of the type disclosed in u . s . pat . no . 3 , 098 , 751 and chemical indicator 28b is a steam sensitive ink of the type disclosed in u . s . pat . no . 2 , 118 , 144 . a sheet 14 made of a transparent material , such as clear plastic , is attached at the margin of support member 12 along a line 20 by any means well known in the art , such as by heat sealing . this combination of the sheet 14 on support member 12 is for the purpose of forming a pocket 16 . as can be best seen in fig3 the pocket 16 is formed by the support member 12 and the sheet 14 . in the preferred embodiments of the present invention , the lip 17 of the pocket 16 is not joined with the support member 12 . as seen in fig1 or 3 lip 17 is positioned on the support member 12 over the lower retaining strap 24 to lie intermediate die cut slit 34 and die cut slit 36 . this structure is provided to facilitate insertion of the blade portion of a medical instrument such as the scissors 38 into the pocket 16 . in another embodiment of the instrument protector 10 , shown in fig5 and 7 , sheet 14 is not attached to support member 12 in regions 82a and 82b . this unattached portion of sheet 14 thereby forms a projection 84 . as best seen in fig6 projection 84 can be lifted or folded away from support member 12 at the open end of pocket 16 to form a wider opening for the pocket 16 that facilitates insertion of the tips of a medical instrument , such as scissors 38 , into the pocket 16 . in its operation the instrument protector 10 is intended to rigidly retain a jointed medical instrument such as the scissors 38 shown in fig2 . in preparing the scissors 38 for sterilization with use of the instrument protector 10 , the scissors 38 would be sequentially woven through slit 30 , slit 32 , slit 34 and slit 36 to be in position as shown in fig2 . as can be best seen in fig2 after the medical instrument 38 has been woven through the slits 30 , 32 , 34 and 36 as described above , the tip end of the instrument lies within the pocket 16 defined by sheet 14 and support member 12 . for jointed medical instruments , such as scissors 38 , the handles thereof can be spread to consequently spread the blades of the instrument . to retain the medical instrument in the blade separated condition , the flap 18 is folded between the handles of scissors 38 as shown in fig2 . flap 18 is then sequentially inserted through the slit 30 and the slit 32 of the upper retaining strap 22 . therefore , as shown clearly in fig2 and 8 , the flap 18 is held under the respective strap 22 or strap 90 and wedged against the parted handles of scissors 38 to secure same . in this configuration , the instrument protector 10 rigidly holds a jointed medical instrument , such as the scissors 38 , and is ready for insertion into a sterilizable bag such as of the type disclosed in u . s . pat . no . 3 , 604 , 616 . further , in the configuration where flap 18 is folded to retain scissors 38 on instrument protector 10 , the protector 10 presents a relatively flat profile which avoids bulges that could inhibit its insertion and positioning into a sterilizable bag . in using the instrument protector 10 , as shown in fig5 for the sterilization of a medical instrument such as scissors 38 , scissors 38 would be sequentially woven through slots 86 and 88 . as can be best seen in fig7 after scissors 38 has been woven through slots 86 and 88 , the tips of scissors 38 need to be positioned into the pocket 16 . this can be facilitated by folding or lifting projection 84 away from the support member 12 into a configuration as shown in fig6 . with projection 84 folded away from the support member 12 , the opening to pocket 16 is widened and the tips of scissors 38 can be more easily inserted into the pocket 16 . for jointed medical instruments , such as scissors 38 , the handles thereof can then be spread to consequentlially spread the blades of the instrument . as with the embodiment of the present invention previously discussed , to retain the scissors in the blades separated condition , the flap 18 can be folded between the handles of scissors 38 . as shown in fig7 flap 18 is then sequentially inserted through slot 84 and slot 86 to be held under the strap 90 and wedged between the parted handles of scissors 38 to secure same . in this configuration the instrument protector 10 rigidly holds a medical instrument and is ready for insertion into a sterilizable bag 96 . for purposes of illustration , fig8 shows a jointed instrument mounted on an instrument protector 10 which has been inserted into a sterilization bag 96 . dimensioning of the support member 12 to conform with the inner dimensions of the sterilizable bag 96 , as shown in fig8 will contribute to the stability of the scissors 38 during the sterilization process by preventing movement of the instrument protector within the bag during the sterilization process . after sterilization , when the medical instrument is to be used , the instrument protector 10 , with the medical instrument retained thereon , is removed from the envelope . release of the tab 18 from the upper retaining strap 22 frees the medical instrument so it can be removed from the instrument protector 10 and used for its intended purpose . in an alternate embodiment of the instrument protector shown in fig4 and generally identified by the referenced character 40 , it can be appreciated that there is no need for the flap 18 shown in fig1 5 or 6 . in all other respects the instrument protector 10 and the instrument protector 40 are substantially similar . the alternate embodiment is , however , better suited when the medical instrument is not jointed and is , instead , a monadic instrument of the scalpel or probe type . more specifically , the alternate embodiment of an instrument protector 40 comprises a support member 42 which is of a semi - rigid material similar to the material described for instrument protector 10 . in the instrument protector 40 , the support member 42 is formed with the die cut slits 60 , 62 , 64 and 66 . respectively , slits 60 and 62 form an upper retaining strap 52 and the slits 64 and 66 form a lower retaining strap 54 . also , support member 42 has provision for incorporating chemical indicators 58a and 58b . the indicators 58a and 58b are substantially similar to the indicators 28a and 28b previously discussed and are preferably made from the same indicator inks . like instrument protector 10 , the instrument protector 40 includes a clear plastic sheet 44 which is heat sealed to the support member 42 along the line 50 . this joining of the sheet 44 to instrument protector 40 forms the pocket 46 . a medical instrument , such as the scalpel 39 shown in fig4 when prepared for sterilization , is sequentially woven through slits 60 , 62 , 64 and 66 . thus , positioned as shown in fig4 the blade end of scalpel 39 is located within the pocket 46 . as can be best appreciated by reference to fig4 insertion of the medical instrument into pocket 46 is facilitated if the lip 47 of pocket 46 lies intermediate the slit 64 and 66 of the lower retaining strap 54 . it should be recognized by the person of ordinary skill that the alternate embodiment of the present invention for monadic instruments , generally indicated 40 in fig4 can have its retaining straps 52 and 54 formed by widened slots such as the slots 86 and 88 previously described and shown in fig5 and 7 . also , transparent sheet 44 may be left unattached to support member 42 in appropriate regions at the margin of support member 42 to form a projection similar to the projection 84 previously discussed and for the purposes as previously described . a medical instrument , such as scalpel 39 in the configuration shown in fig4 is prepared for sterilization and can be inserted into a sterilizable envelope such as of the type described in u . s . pat . no . 3 , 604 , 616 . when needed the sterilized instrument , together with the instrument protector 40 , can be removed from the sterilizable envelope and used for its intended purpose . while the particular instrument protector as herein shown and disclosed in detail is fully capable of obtaining the objects and providing the advantages herein before stated , it is to be understood that it is merely illustrative of the presently preferred embodiment of the invention and that no limitations are intended to the details of construction or design herein shown other than as defined in the appended claims .
a device for protecting medical instruments during sterilization and subsequent handling comprising a support member formed with a retaining loop for holding the instrument on the support member . a clear plastic sheet is joined at a portion of the margin of the support member to define a pocket into which the cutting edges of the medical instrument are placed for protection . a projection of the sheet which overhangs the open end of the pocket can be folded away from the support member to facilitate insertion of the instrument tips into the pocket . for jointed instruments , the support member may also have an attached flap which is folded to position between the open handles of the instrument and thereby separate the instrument &# 39 ; s cutting edges during the sterilization process .