DE1913447A1 - Needle cap for a syringe pack - Google Patents

Description

P. 1302

Dr.-lnr.! \ -Dlpl.-fog.f-. .

BiiuLirJ 3a

Sherwood Medical Industries, Chicago / Illinois 60602 (U.S.A.)

Needle cap for a syringe pack

The invention relates to a container for an injection syringe and in particular a two-part package with a cap enclosing the barrel end of the syringe and with a the needle end of the syringe enclosing the sheath that extends over it extending away the barrel end of the syringe, the inside of the sheath being spaced from the outside of the barrel and a part of the cap rests against the outside of the cover. "The cover is provided with ribs on the inside, which center the needle portion of the syringe during assembly, storage, and shipping.

In U.S. Patent No. 2,720,969 (Kendall), 2,860,638 (Wilburn) and 3,112,747 (Cowley) are syringe

909846/0550

• - 2 -

packs disclosed with a closed at one end sleeve which is pushed onto the syringe needle. In the American U.S. Patent Nos. 2 42t 495 (Green) and 2,860,638 (Wilburn) also describe syringe packs in which the needle sleeve covers part of the barrel of the syringe * With these packs, however, there is direct contact between the needle hub and the barrel of the syringe, which consists of Sterility reasons is not allowed. It is for this reason a syringe package is desired in which the syringe is held centered in the package, but without a direct one There is contact with the syringe while, on the other hand, the desired air space is maintained between the package and the syringe remain.

The invention provides a two-part packaging for an injection syringe before, which has a sleeve-like cap enclosing the cylinder end of the syringe and one of the cap removable sleeve which encloses the syringe end of the cap and centers the needle portion of the syringe in the cap. the The sleeve extends over part of the barrel end of the syringe, but has no direct contact with it Aufc In the currently preferred embodiment of the invention the needle sleeve is generally designed and frustoconical Provided with ribs on the inside at intervals, which β in the middle of the needle part of the syringe. The syringe needle can be inserted into a Cannula are used against which the ribs in the sleeve rest. The sleeve ends in a generally cylindrical opening, which receives the barrel end of the syringe, and whose inner diameter is much larger than the outer diameter of the Cylinder part of the syringe so that between the opening and the cylinder part is a distance. The sleeve is also at the end having the opening with an axially verlaiaf © Provided a recess that receives and holds part of the Kapp® over the outside of the open end of the sleeve.

The invention is now "described in detail" in the enclosed Drawing is the

909846/0550

1 shows a side view of a containing a hypodermic syringe Packaging with the needle sleeve according to the invention,

Pig «2 a vertical section through the packaging after the Line 2-2 in Fig.1 »the packaging with a shows in this inserted syringe,

Pig * 3 a horizontal section through the needle sleeve after the Line 3-3 in Figo2 and the

FIG. 4 is a horizontal section through the packaging according to FIG Line 4-4 in FIG. 2.

The figures show a packaging 10 for an injection syringe 12 with the usual cylinder 14 and the piston 16, which is attached to the The outer end is provided with the push button 18. The liquid is fed through the neck 22 of the cylinder into the receiving end 24 the needle 26 is pushed in and occurs at the open end of the needle 27 from

For the purposes of the invention, the needle 26 is shown inserted into a cannula 28 made of a plastic or another sterilizable material. This combination of the needle with the cannula is described in the pending patent application No. 640 889 by Ralpf DoAlley and David S ₀ Sheridan , filed May 24, 1967t illustrated and described. The cannula may have an enlarged cord 28a which continues in a generally frustoconical shape into a generally cylindrical portion 28b. The end 28c of the cannula tapers to a point at the transition point with the needle 26.

The cylinder end of the syringe is surrounded by a cylindrical cap 30, which is attached to the push button 18 of the plunger 16 located end 32 is closed and at the end 34 facing the needle is open the push button 18 rest against the inside of the part 32.

909846/0550

The needle portion of the syringe is received in a sleeve 36 according to the invention. The sleeve 36 has a generally cylindrical base portion 38 which is intended to overlie a portion of the syringe barrel 14. The base 38 has a stepped part 40, the inside 40a of which has a substantially larger diameter than the outside of the cylinder 14, so that a gap is formed between the outside of the cylinder 14 and the inside 40a of the stepped part 40 of the base 38. The diameter of the outside 40b of the part 40 is dimensioned such that the part 40 fits exactly into the cap 30. The base portion 38 is W comparable further axially provided with a running recess 42 into which the cap 30 can be inserted, the free end 34, whereby the package is sealed after the assembly "

The sleeve 36 also has a generally frustoconical shape tapered body 44, which is in a substantially cylindrical tip portion 46 continues in a closed End 48 runs out and the pointed free end 27 of the needle 26 protects · The frustoconical body part 44 can be provided on the outside with ribs 50, which are in a flange part 50b at the transition point between the frustoconical Part 44 and the cylindrical base 38 terminate. In FIG. 4, the flange part 50b is in the form of a hexagon with the six flat sides 50c are shown, which limit a rolling movement of the package when it is placed on a flat surface will. In the context of the invention, the flange part 50b can also be a different number of flat surfaces. ..

The sleeve 38 is on the inside with several, preferably eight, generally radially inwardly directed and axially extending Ribs 52 provided. The ribs have guide surfaces 53 which taper to a point near the enlarged open end 40 and terminate in inwardly directed free ends 54 which define a generally circular and cylindrical inner sleeve, the with the receiving end 24 of the needle 26 and with the enlarged part 28a of the plastic cannula 28, wherein the Syringe is centered on insertion into the cap while

■ 90 3846 / 05-50

the barrel portion of the syringe in relation to the barrel base 38 is centered and kept away from this. The seat between the ribs 52 and the needle holds them in place Sleeve firmly. If you shake gently, however, this seat is interrupted, so that the needle and syringe out of the Sleeve fall out.

The cap 30 is placed over the syringe 14 so that the open end 34 is pushed onto the outside 40b of the stepped part of the sleeve 36. The end 34 then sits in the Recess 42 of the base part 38 of the sleeve 36, the push button 18 of the syringe rests against the inside of the end 32 of the cap 30. · At the transition point between the cap and the Sleeve is point hot sealing the cap 30 to the sleeve or attached by adhesive tape. Before shipping, the whole unit is sterilized using a SAS sterilization process or sterilized using another suitable process If the seal between the cap and the sleeve is broken, the sterile lower end 34 of the cap 30 has no effect Contamination of the surface 40b upon removal. The outer edge of the recessed part 40 is therefore kept sterile, see above that even if the needle touches this edge when Removing it from the sleeve does not affect the sterility of the needle.

In this embodiment, the syringe is removed after removal of the cap 30 is still centered in the sleeve 36 and the barrel portion is held away from the sleeve. The syringe can therefore still lying within the sleeve 36 in a tray ready for use, remains sterile and stands with no surface in direct contact. If the syringe is removed from the sleeve 36 or shaken out, so the needle 26 and / or the cannula 28 slides along the sterile edges 54 of the guide ribs 52 and over the sterile ones Inside 40a, when the syringe falls out of the packing so that the sterility of the needle or cannula is maintained, All other parts of the syringe are held by the needle cap

909846/05 50

■ - 6 -

kept away so sterility with pending use Security is preserved. The ribs 52 and the small distance between their inner ends 54 from each other represent a means with which the syringe can initially be guided and retained in the center of the needle cap, the syringe furthermore

of parts 40, 44 and 46 of the needle cap after assembly is kept away "

At the above-described embodiment of the invention the inventive concept length changes, modifications and substitutions can be made by experts in the frame. The invention itself is therefore only delimited by the accompanying patent claims.

Claims

90 9846/0550

Claims (1)

Paten.tan.spru c lie Sleeve for receiving and protecting the needle part of a Injection syringe that has a cylinder and one of this having outgoing injection needle, characterized in that the sleeve is closed at one end and continues in a frustoconical body that ends in an enlarged open end and has a length from the closed to the open end that corresponds to the Enclosing the syringe needle and part of the syringe cylinder is sufficient, and that the inner diameter of the open end is substantially larger than the outer diameter of the syringe barrel with which the sleeve is used so that the sleeve has no direct contact with the syringe barrel 2 · Sleeve according to claim 1, characterized in that the body part is inside with generally radially inwardly directed and axially extending ribs are provided, the radial height of which is dimensioned so that they the needle part enclose the syringe tightly and keep it centered in relation to the sleeve » 3 · sleeve according to claim 1, characterized in that the The outer diameter of the open end is dimensioned so that the open end can be assembled telescopically with a cap that accommodates the cylinder part of the syringe, with which the sleeve should be used Sleeve according to claim 3, characterized in that the open end of the sleeve is provided with a recess which runs in the direction of the closed end and the Receives end of said cap, the sleeve and the cap being held together in a sealed manner. 90 9 846/0550 5 · Sleeve according to claim 4 »characterized in that the Body part is provided on the inside with generally radially inwardly directed and axially extending ribs, the radial height of which is such that they closely enclose the needle part of the syringe and with respect to the sleeve keep centered " 6 · Sleeve according to claim 2, characterized in that the outer diameter of the part at the open end is so dimensioned , is that this can be assembled telescopically with a cap that accommodates the cylinder part of the syringe, with which the sleeve is to be used. 7 «sleeve for receiving and protecting the needle part of a Injection syringe which has a cylinder and an injection needle extending therefrom, characterized in that, that the sleeve is closed at one end and 'continues in a frustoconical body which is hollow is and widens outward to an open end that the body is inside with radially inward Ribs is provided, the ends of which have a small distance from each other and a syringe needle tight enclose. 8 · Sleeve according to claim 7, characterized in that the Hip close to the open end of the body in outward beveled surfaces that aid in inserting and centering the syringe in the sleeve. 903846/0550