US3073307A - Needle hub and sheath structure - Google Patents

Needle hub and sheath structure Download PDF

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US3073307A
US3073307A US849243A US84924359A US3073307A US 3073307 A US3073307 A US 3073307A US 849243 A US849243 A US 849243A US 84924359 A US84924359 A US 84924359A US 3073307 A US3073307 A US 3073307A
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section
hub
sheath
cannula
end
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US849243A
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Peter A Stevens
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Brunswick Corp
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Brunswick Corp
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178Syringes
    • A61M5/24Ampoule syringes, i.e. syringes with needle for use in combination with replaceable ampoules or carpules, e.g. automatic
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/002Packages specially adapted therefor, e.g. for syringes or needles, kits for diabetics
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178Syringes
    • A61M5/31Details
    • A61M5/32Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
    • A61M5/3202Devices for protection of the needle before use, e.g. caps
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178Syringes
    • A61M5/31Details
    • A61M5/32Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
    • A61M5/34Constructions for connecting the needle, e.g. to syringe nozzle or needle hub
    • A61M5/343Connection of needle cannula to needle hub, or directly to syringe nozzle without a needle hub
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178Syringes
    • A61M5/24Ampoule syringes, i.e. syringes with needle for use in combination with replaceable ampoules or carpules, e.g. automatic
    • A61M2005/2403Ampoule inserted into the ampoule holder
    • A61M2005/2414Ampoule inserted into the ampoule holder from the side
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178Syringes
    • A61M5/31Details
    • A61M2005/3117Means preventing contamination of the medicament compartment of a syringe
    • A61M2005/3118Means preventing contamination of the medicament compartment of a syringe via the distal end of a syringe, i.e. syringe end for mounting a needle cannula
    • A61M2005/312Means preventing contamination of the medicament compartment of a syringe via the distal end of a syringe, i.e. syringe end for mounting a needle cannula comprising sealing means, e.g. severable caps, to be removed prior to injection by, e.g. tearing or twisting
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/50Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests having means for preventing re-use, or for indicating if defective, used, tampered with or unsterile
    • A61M5/5086Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests having means for preventing re-use, or for indicating if defective, used, tampered with or unsterile for indicating if defective, used, tampered with or unsterile

Description

Jan. 15, 1963 P. A. STEVENS NEEDLE HUB AND SHEATH STRUCTURE 2 Sheets-Sheet 1 Filed Oct. 28, 1959 IIIIIIIVII'II Inventor Peter A. Stevens %D .Lw'.1mm&l gw

Mlor'neQS Jan. 15, 1963 P. A. STEVENS 3,073,307

NEEDLE HUB AND SHEATH STRUCTURE Filed Oct. 28, 1959 2 SheetsSheet 2 -I' 21/etztor Peter A. SE'EVEOS 7 5 DmLM .mm & N g

Momegs United States Patent Ofiice 3,073,307 NEEDLE HUB AND SHEATH STRUCTURE Peter A. Stevens, Waterbury, Conn., assignor, by mesne assignments, to Brunswick Corporation, a corporation of Delaware Filed Oct. 28, 1959, Ser. No. 849,243 4 Claims. (Cl. 128-221) The present invention relates generally to improved means for protecting a needle cannula, and more particularly to an improved disposable needle hub and cannula sheath structure adapted to being mounted on the outlet end of a hypodermic syringe and other apparatus for administering medicaments.

In the medicinal arts, hypodermic syringes with hypodermic needles detachably mounted thereon are widely used to administer medicaments, and for such use it is very important that the cannula of the hypodermic needle remain undamaged and in its original sterile condition until used. Thus, whether the hypodermic needle is sold as a separate sterilized unit or detachably mounted on a hypodermic syringe containing a medicinal preparation, means must be employed to maintain the cannula of the hypodermic needle in its original sterile condition and protected against physical damage. Generally, the cannula is enclosed in a detachable protective sheath which is frictionally engageable with a portion of the needle hub or the cannula with the sheath being removable from the cannula immediately before using. And, since the protective sheath for the cannula of the hypodermic needle hub assembly, of necessity, must be readily removable from the cannula, quite frequently a sheath is accidentally or deliberately removed from a cannula between the time of manufacture and ultimate use, thereby exposing the cannula to contamination and damage. Moreover, the sheaths heretofore devised for disposable hypodermic needles intended to be detachably mounted on the outlet end of a hypodermic syringe could be readily removed and replaced in the original position on the cannula without the ultimate user being aware of such exposure to contamination and damage. Thus, the previously devised protective sheath means for a cannula of a hypodermic needle hub unit which is adapted to being detachably mounted on the outlet end of a hypodermic syringe have failed to insure absolutely that the sterility of the needle cannula has been maintained or that the needle cannula has not been physically damaged.

Other means heretofore devised for protecting a hypodermic needle cannula which is fixed in a hub suitable for mounting on a hypodermic syringe outlet have included strip packages and individual rubber, plastic or glass envelopes or cartridges sealably enclosing the needle and hub. Each of the foregoing means requires using additional packaging materials and additional handling of the needles, thereby resulting in a higher percentage of damaged and contaminated needles and also greatly increasing the overall cost. However, none of these prior art means provides a completely satisfactory means of conveniently and aseptically mounting a hypodermic needle hub on the discharge outlet of a hypodermic syringe, nor affords means for connecting the needle hub unit to a medicinal vial of arnpule without substantially increasing the danger of contaminating a portion of the needle cannula.

Heretofore it has also been suggested that a hypodermic needle cannula be fusibly sealed at a point intermediate the ends thereof in a frangible glass tube with the outer end of the glass tube being sealed to enclose one end of the cannula. However, none of these glass units or structures were adapted to beingdetachablymounted on the outlet end of a hypodermic syringe. Thus, these suggested structures were not concerned with the problem of protecting a cannula of detachable hypodermic needle hub structures which are usablewith a provide a more practical and economical detachable hypodermic needle hub-sheath structure which is adapted to protect a hypodermic needle cannula.

It is a further object of the present invention to pro-" vide an improved tamper-proof sheath means for a cannula of a detachable hypodermic needle hub structure for mounting on the outlet end of a hypodermic syringe.

at is an additional object of the present invention to provide an improved unitary cannula sheath and hub structure which facilitates detachably mounting the hypodermic needle hub on a hypodermic syringe hub adapter.

It is still another object of the present invention to provide an improved and more economical unitary sheathcartridge container for a detachable hypodermic needle hub assembly adapted to protect the needle cannula thereof against contamination and physical damage, both during the storage thereof and when removing the sheath 1 therefrom.

Other objects of the present invention will be apparent to those skilled in the art, from the detailed descrip-- tion and appended claims when read in conjunction with the accompanying drawings wherein:

FIGURE 1 is a longitudinal vertical sectional view of a hypodermic needle hub and integral sheath embodying the present invention with a hypodermic needle cannula mounted therein shown in side elevation;

FIG. 2 is a side eievational view of the hypodermic needle hub and sheath shown in FIGURE 1;

FIG. 3 is a vertical sectional view along the lines 3-3.

FIG. 5a is a vertical sectional view along the line FIGS. 6a, 6b and 60 show schematic view of the three;

stages of mounting the hub sheath assembly of FIG. 5 onto a syringe body. The improved hypodermic needle hub structure of-the present invention broadly comprises a hypodermic needle hub section of a non-vitreous material adapted to be fixedly mounted on the discharge outlet of a hypodermic syringe, and which has a severable but integral needle cannula sheath section sealably closed at its outer endand integrally joined at the inner end thereof with the hub section to sealably enclose one end of a needle cannula mountable therein. The integral sheath section is readily severable from the hub section by twisting, or the like manipulation of the sheath relative to the hub section which avoids bending transversely. The improved hub structure of the present invention is preferably providedbetween the outer end of the hub and the inner end of the sheath sections with a connecting section integral with both the hub and sheat sections and having a reduced wall thickness to facilitate removal of the sheath from the hub section. In one preferred embodiment of the present invention, the integral sheath and hub sections are molded Patented Jan.'15, 1963 as an integral unit of a non-vitreous plastic material, such as plasticized polyethylene plastic, with an integral 're-' duced diameter section of the said non-vitreous thermo plastic material formed between the sheath and the hub sections. The foregoing sheath hub structure can, of course, consist of the unitary sheath and hub structure with a needle cannula molded therein, or the integral sheath and hub structure per se can be provided with a cannula at any time after the molding thereof by pressfitting a cannula into the axial opening of the hub-sheath structure.

It will be understood that other ways and means of providing an integral sheath hub structure can be used instead of molding the sheath and hub as a unitary structure, and other ways and means of providing a readily severable connecting section between the hub and the sheath besides providing a reduced diameter section can be employed in various embodiments of the present invention. Thus, for example, a premolded thermoplastic sheath of a non-vitreous thermoplastic resin, such as plasticized polyethylene of methamethacrylate, can be fusibly joined to a hub section of a similar thermoplastic material so as to form a unitary sheath hub structure having a similar appearance and form as in the above-described embodiment of the present invention. Also, the novel integral sheath and needle hub structure can be formed of premolded longitudinal sections, for example, of thermoplastic material having a reduced diameter section preformed therein so that following assembly by fusibly joining opposed longitudinal sections, the sheath is subsequently removable therefrom in the same manner as with the previously described preferred embodiment of the present invention. And, instead of providing a connected section between the sheath and hub having a reduced thickness, a line of weakness can be provided between the hub and the sheath without substantially altering the thickness of the connecting section, as by embedding in the material between the hub and the cannula a narrow strip of material of different properties which yields more readily under a twisting stress than does the material from which the hub and sheath are made.

In the embodiment of the present invention shown in FIGS. 1-4 of the drawing, a hypodermic needle hub assembly having a generally cylindrical hub body section 11 is provided with an axially disposed hypodermic needle cannula 12 which is fixedly secured to the hub body section 11 by means of a suitable ferrule or eyelet retaining ring section 13 formed on one end thereof. The ring section 13 is preferably provided with a plurality of projections 14 or indentations which provide for suitable frictional engagement between the needle cannula and the hub to securely hold the needle in the hub section 11 against longitudinal and rotatable movement. The inner end surface 16 of the hub body section 11 is provided with a standard Luer taper for engagement with the correspondingly Luer tapered discharge outlet of a conventional hypodermic syringe (not shown). The outer surface of the body section of the hub section 11 has a plurality of preferably longitudinally extending projections 17 which serve to facilitate gripping the hug firmly for manipulation thereof when mounting the hub section on the outlet end of the hypodermic syringe and when twisting a cannula sheath section relative thereto.

Extending forwardly from the front surface of the hub body section 11 and integrally joined therewith by a relatively thin frangible section 19, is a cannula sheath 21. The sheath 21 has its outer end 22 sealably closed and has an axial passage 23 extending the length thereof of somewhat larger diameter than the exterior diameter of the cannula 12. The outer surface 24 of the sheath 21 is preferably provided with a plurality of longitudinal projections 26 extending radially outwardly which provide a finger-gripping surface for manipulation of the sheath. If desired, sterile cotton can be placed within the Luer tapered end section 16 of the hub body section 11, or a protective cap 28 can be placed over the end section 16 of the hub to serve as a bacterial filter to prevent contamination following sterilization.

It will be apparent from the foregoing description, that in the improved integral hub-sheath structure of the present invention, the cannula 12 is completely enclosed by a sheath 21 which is integrally joined with the needle hub 11 so that there is no possible passage between the hub 11 and the sheath 21 for bacteria or contamination to enter. Moreover, the sheath 21 cannot be removed from the cannula 12 without leaving clear evidence of the sheath having been separated from the hub 11. When the hypodermic needle is to be used for administration of a medic ament, however, the needle assembly can be easily mounted on a hypodermic syringe having a male Luer-type adapter on the discharge or outlet end thereof prior to removing the sheath 21. And, immediately before injection through the cannula 12, the sheath 21 is separated from the hub section 11 by gripping the hub section 11 between the fingers of one hand and the sheath 21 between the fingers of the other hand and applying a twisting, breaking force which completely severs the connecting section 19 joining the sheath 21 to the hub body section 11. The sheath 21 is then withdrawn from the cannula 12, and the cannula 21 of the needle hub assembly is for the first time since leaving the manufacturer exposed to the atmosphere and can be used in the usual manner without sterilizing without fear or apprehension that the needle cannula has been previously exposed to contamination, or otherwise physically damaged.

The needle container assembly 70 shown in FIG. 5 comprises a needle hub and sheath cartridge section 71 and a cap section 72 mounted on one end of section 71. The novel needle hub and sheath cartridge section 71 is formed of a double-ended cannula 73 securely fixed in the hub body section 74 with a forwardly ex tending administration cannula portion 76 and a rearwardly extending ampule or vial closure piercing cannula portion 77 having a length somewhat shorter than the administration cannula portion 76 but extending substantially beyond the end of the hub body section 74. The hub body section 74 has a rearwardly extending cylindrical section 78 which is adapted to threadably engage the helical threads of a hypodermic syringe outlet (see FIG. 6a). The forwardly end of the hub body section 74 is undercut to form a small diameter section 79 which is integrally connected with the hub section 74 at one end and at the other end with a large diameter sheath portion 80. The sheath 80 has an axial opening or passage 81 therein extending outwardly to a point spaced inwardly a short distance from the outer end of the sheath portion 80 and is adapted to sealably enclose the administration cannula portion 76.

The sheath 80 is also provided with generally cylindrical end sections 82, 82'. having a diameter slightly larger than the diameter of the hub body section 74. A plurality of radially extending longitudinal rib sections 83 connect the end sections 82, 82' and provide a gripping surface for holding and manipulating the sheath cartridge section 71. The end section 82 is also provided with a reduced diameter cylindrical section 84 and a shoulder abutment surface 85 for retaining thereonthe cylindrical cartridge cap section 72 which encloses the end of the hub to prevent bacterial contamination.

When using the needle container assembly 70, with a syringe body 87 having an externally screw-threaded discharge outlet 88, the cap 72 is removed from the needle cartridge assembly and the cylindrical section 78 of the hub is mounted in threading engagement with the syringe outlet 88 by holding the sheath portion 80 between the fingers and rotating thesheath portion 80 and the hub section 74 formed integrally therewith relative to the threaded discharge outlet 88 to threadably engage the hub 74 on the syringe outlet 88 (see FIGS.

6a, 6b). Immediately before the syring is to be used for injecting a medicament, the sheath portion 80 which is still sealably and integrally joined to the hub section 74, is removed therefrom by twisting to break the small diameter connecting section 79, and the sheath portion is removed and discarded (see FIG. 60).

While the improved disposable needle hub and sheath structure of the present invention can be made by any of the several ways described herein, or by other methods known or obvious to those skilled in the art, one par= ticularly convenient method of manufacturing and assembling the needle hub and integral sheath embodiment shown in the drawing, comprises injection molding as a unit the integral hub and sheath structure with a reduced diameter connection section formed between the hub and sheath sections and providing an axial opening in said structure adapted to retain fixedly therein a needle cannula. A multi-cavity divided mold having mold insert elements and means for injecting a thermoplastic material therein can be used for the above injection molding operation.- At any time after the integral sheath and hub structure is removed from the mold insert element, a needle cannula preferably having a boss or enlarged eyelet retaining section secured thereto which frictionally engages in an axial passage in the hub body section, is inserted into the hub wherein it is fixedly secured against both longitudinal and rotatable movement.

The integral hub and sheath structures shown in FIGS. 11 and 12 can be fabricated in the same manner as above described and are provided during the molding operation, or subsequently thereto, if desired, with thread engaging means on the outer surface of the respective hub sections for threadably engaging the outlet in a syringe body.

The non-vitreous thermoplastic materials suitable for use in the present invention include thermoplastic resins, both natural and synthetic, including methamethacrylate, styrene, polyamides, and polyethylene resins. Other non-vitreous thermoplastic materials which will yield or part under a twisting force without forming sharp cutting edges, or the like, can be used. It is also important that the material does not require bending transversely of the longitudinal axis in order to separate the sheath from the hub, since this would tend to dull the needle point or bend the needle cannula. And, while nonvitreous thermoplastic materials are the preferred class of materials used in the present invention, it is also possible to use non-vitreous thermosetting materials, if the selected molding technique requires such materials.

It will be apparent to those skilled in the art that the needle hub-sheath structure of the present invention provides an improved disposable hypodermic needle structure for use in the medicinal arts in conjunction with a hypodermic syringe or other apparatus for administering medicaments which in addition to insuring the sterility of the needle cannula greatly increases the convenience and ease of using said disposable needles. Thus, the present hub-sheath structure makes it possible to sealably enclose the needle cannula within an integral sheath and yet permits the convenient and rapid separation and removal of the sheath simply by applying a rotational or twisting movement of the sheath relative to the hub and without applying a crushing force thereto or bending the sheath transversely which would in some instances bend the cannula or otherwise harm the point thereof.

I claim: I I p l. A disposable hypodermic needle containing unit fol protectively enclosing at least one end of a hypodermic needle cannula which comprises; a disposable non-vitreous plastic needle hub-supporting section with an axial passage extending therethrough, said hub-supporting section adapted to fixedly engage an enlarged diameter hub seetion formed on a hypodermic needle cannula spaced longitudinally from a penetrating point at an end thereof, a pointed hypodermic needle cannula with an enlarged diameter hub section fixedly formed thereon and sealably mounted in said hub-supporting section with a portion of said enlarged diameter hub section extending axially beyond the end of said hub-supporting section, a sheath section extending axially from said end of said hub-supporting section and having an axially extending recess therein connecting with said axial passage, a reduced diameter sealably connecting said end of said hub-supporting section with said sheath section and said frangible section being disposed intermediate the ends of said enlarged diameter hub section and in engagement with said enlarged diameter hub section, said sheath section adapted to sealably enclose said'hypodermic needle cannula from said cannula hub section to said point when said cannula hub section is in sealing engagement with said hub-supporting section, and said sheath section adapted to be severable from said hub-supporting section without destroying said sheath section only by rotation of said sheath section about said extending portion of said enlarged diameter hub section which serves as a pivotal support during rotation of said sheath section; thereby permitting removal of said sheath section without damaging said cannula.

2. A disposable hypodermic needle containing unit as in claim 1, wherein said hub-supporting section has generally cylindrical wall surfaces extending axially in a direction opposite from said sheath section with a removable cap member protectively enclosing the other end of said hub-supporting section.

3. A disposable hypodermic needle containing unit as in claim 2, wherein said hub-supporting section has removably mounted on the other end thereof a form-retaining cap member which protectively closes said other end.

4. A disposable hypodermic needle containing unit as in claim 1, wherein said sheath section has an enlarged transverse section adjacent said frangible section with a removable cap member mounted on said enlarged transverse section for protectively enclosing said hub-supporting section and the other end of said cannula.

References Cited in the file of this patent UNITED STATES PATENTS 877,946 Overton Feb. 4, 1908 1,564,499 Tropp Dec. 8, 1925 1,860,898 Meyer May 31, 1932 2,371,086 Watson Mar. 6, 1945 2,828,742 Ashkenaz Apr. 1, 1958 2,836,942 Miskel June 3, 1958 2,837,093 Tash June 3, 1958 2,870,766 Dann Jan. 27, 1959 2,896,622 Huttermann July 28, 1959 2,935,067 Bouet May 3, 1960 2,953,243 Roehr Sept. 20, 1960 UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent No. 3 073307 January 15, 1963 Peter A. Stevens It is hereby certified that error appears in the above numbered patent requiring correction and that the said Letters Patent should read as corrected below.

Column 6,

line 19, after "diameter" insert clrcumferent ially extending frangible section Signed and sealed this 6th day of August 1963,

(SEAL) Attest:

ERNEST w. SWIDER DAVID L- A D

Claims (1)

1. A DISPOSABLE HYPODERMIC NEEDLE CONTAINING UNIT FOR PROTECTIVELY ENCLOSING AT LEAST ONE END OF A HYPODERMIC NEEDLE CANNULA WHICH COMPRISES; A DISPOSABLE NON-VITREOUS PLASTIC NEEDLE HUB-SUPPORTING SECTION WITH AN AXIAL PASSAGE EXTENDING THERETHROUGH, SAID HUB-SUPPORTING SECTION ADAPTED TO FIXEDLY ENGAGE AN ENLARGED DIAMETER HUB SECTION FORMED ON A HYPODERMIC NEEDLE CANNULA SPACED LONGITUDINALLY FROM A PENETRATING POINT AT AN END THEREOF, A POINTED HYPODERMIC NEEDLE CANNULA WITH AN ENLARGED DIAMETER HUB SECTION FIXEDLY FORMED THEREON AND SEALABLY MOUNTED IN SAID HUB-SUPPORTING SECTION WITH A PORTION OF SAID ENLARGED DIAMETER HUB SECTION EXTENDING AXIALLY BEYOND THE END OF SAID HUB-SUPPORTING SECTION, A SHEATH SECTION EXTENDING AXIALLY FROM SAID END OF SAID HUB-SUPPORTING SECTION AND HAVING AN AXIALLY EXTENDING RECESS THEREIN CONNECTING WITH SAID AXIAL PASSAGE, A REDUCED DIAMETER SEALABLY CONNECTING SAID END OF SAID HUB-SUPPORTING SECTION WITH SAID SHEATH SECTION AND SAID FRANGIBLE SECTION BEING DISPOSED INTERMEDIATE THE ENDS OF SAID ENLARGED DIAMETER HUB SECTION AND IN ENGAGEMENT WITH SAID ENLARGED DIAMETER HUB SECTION, SAID SHEATH SECTION ADAPTED TO SEALABLY ENCLOSE SAID HYPODERMIC NEEDLE CANNULA FROM SAID CANNULA HUB SECTION TO SAID POINT WHEN SAID CANNULA HUB SECTION IS IN SEALING ENGAGEMENT WITH SAID HUB-SUPPORTING SECTION, AND SAID SHEATH SECTION ADAPTED TO BE SEVERABLE FROM SAID HUB-SUPPORTING SECTION WITHOUT DESTROYING SAID SHEATH SECTION ONLY BY ROTATION OF SAID SHEATH SECTION ABOUT SAID EXTENDING PORTION OF SAID ENLARGED DIAMETER HUB SECTION WHICH SERVES AS A PIVOTAL SUPPORT DURING ROTATION OF SAID SHEATH SECTION; THEREBY PERMITTING REMOVAL OF SAID SHEATH SECTION WITHOUT DAMAGING SAID CANNULA.
US849243A 1959-10-28 1959-10-28 Needle hub and sheath structure Expired - Lifetime US3073307A (en)

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US849243A US3073307A (en) 1959-10-28 1959-10-28 Needle hub and sheath structure

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
BE626565D BE626565A (en) 1959-10-28
US849243A US3073307A (en) 1959-10-28 1959-10-28 Needle hub and sheath structure
GB3671960A GB927626A (en) 1959-10-28 1960-10-26 Disposable hypodermic needle hub and sheath structure
FR842398A FR1272330A (en) 1959-10-28 1960-10-27 A combined device for hypodermic syringe comprising a barrel and a needle holder sleeve lost
DE19601441929D DE1441929B (en) 1959-10-28 1960-10-28 Hollow needle for injection syringe with a syringe along a Umfangsschwaechung the end of the hollow needle separable completely surrounding the needle protective cap
FR909183A FR82328E (en) 1959-10-28 1962-09-11 A combined device for hypodermic syringe comprising a barrel and a needle holder sleeve lost
CH1526462A CH410297A (en) 1959-10-28 1962-12-28 Holding and protective device for a hypodermic needle

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US3073307A true US3073307A (en) 1963-01-15

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US849243A Expired - Lifetime US3073307A (en) 1959-10-28 1959-10-28 Needle hub and sheath structure

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US (1) US3073307A (en)
BE (1) BE626565A (en)
CH (1) CH410297A (en)
DE (1) DE1441929B (en)
FR (2) FR1272330A (en)
GB (1) GB927626A (en)

Cited By (75)

* Cited by examiner, † Cited by third party
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US3205889A (en) * 1962-07-23 1965-09-14 Abbott Lab Parenteral fluid container and port structure
US3217710A (en) * 1963-03-25 1965-11-16 Abbott Lab Blood collection and sampling apparatus provided with separable coupling means
US3234944A (en) * 1962-12-10 1966-02-15 Roehr Products Company Inc Hypodermic needle and support structure therefor
US3306291A (en) * 1964-04-14 1967-02-28 Burron Medical Prod Inc Disposable sterile syringes, needle containers and the like having prestressed frangible portions therein
US3342179A (en) * 1965-06-18 1967-09-19 Abbott Lab Blood collection and sampling apparatus having separable coupling means
US3358689A (en) * 1964-06-09 1967-12-19 Roehr Products Company Inc Integral lancet and package
US3434473A (en) * 1966-11-15 1969-03-25 Ciba Geigy Corp Hypodermic needle unit with integral needle guard
USRE28713E (en) * 1962-12-10 1976-02-17 Sherwood Medical Industries, Inc. Hypodermic needle and support structure therefor
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US20150352291A1 (en) * 2013-03-01 2015-12-10 Aptar Stelmi Sas Needle protection device
US9839752B2 (en) * 2013-03-01 2017-12-12 Aptar Stelmi Sas Needle protection device
WO2016173918A1 (en) 2015-04-29 2016-11-03 Novo Nordisk A/S Cap needle assembly for an injection device with predetermined breaking point
WO2017060394A1 (en) 2015-10-09 2017-04-13 Novo Nordisk A/S Injection moulded needle assembly

Also Published As

Publication number Publication date
FR1272330A (en) 1961-09-22
DE1441929B (en) 1970-01-29
CH410297A (en) 1966-03-31
FR82328E (en) 1964-01-24
BE626565A (en)
GB927626A (en) 1963-05-29

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