Hypodermic syringe body structure

Claim 2

A hypodermic syringe body structure for association with a liquid medicament container of the type including a pierceable stopper having a connector thereon, said body structure comprising a molded plastic barrel means open at one end and including an outer wall, a base opposite said open end and an integral tubular portion extending inwardly of the base toward said open end in spaced relation to said outer wall, a separately molded inner tubular means having a wall portion fitting within at least a portion of said integral tubular portion that extends inwardly of the base of the barrel means and which is at least adjacent said base, a tubular wall structure projecting outwardly of said base coaxially of the inner tubular means and including an outer portion for operative association with a separate cannula, means defining a frangible portion disposed inwards of said outer portion and outwards of said base so that said outer portion structure and an associated cannula can be broken away from said barrel means after a single use, means effectively interconnecting said separately molded inner tubular means to said integral tubular portion that extends inwardly of said base, tubular connector means for operative coupling connection with the connector on a stopper of such a medicament container, said inner tubular means having an elongate, reduced diameter bore therein, a liquid transfer tube means supported in said inner tubular means substantially coaxial therewith and spaced therefrom over a major portion of the length thereof, an elongate portion of said transfer tube means fitted and rigidly supported in said reduced diameter bore, said transfer tube means being separate from said cannula and operatively connected between said connector and said tubular wall structure for transferring liquid from said connector to said tubular wall structure and thus to a cannula that is associated therewith, a hollow stopper piercing spike means operatively connected with said liquid transfer tube means and disposed within said tubular connector means for cooperative relation with a stopper of such a medicament container, and said tubular connector means being operatively carried by one of said separately molded tubular means and said integral tubular portion that extends inwardly of said base of said barrel member.

Claim 3

A hypodermic syringe body as claimed in claim 1, and stiffening ribs integral with said barrel and extending from sAid base to said integral tubular portion.

Claim 4

A hypodermic syringe body structure as claimed in claim 1 in which said barrel member and inner tubular means have mutual laterally extending facing bonding surfaces.

Claim 5

A hypodermic syringe body structure as claimed in claim 3 and the means interconnecting said inner tubular means and integral tubular portion comprising a sonically welded connection located at least at said facing bonding surfaces so that said members are effectively integrally combined together.

Claim 6

A hypodermic syringe body structure as claimed in claim 3 in which said bonding surfaces include facing surfaces on each member extending laterally of the longitudinal axis of said body structure and the means interconnecting said members together comprising a sonically welded connection located at least at said facing surfaces so that said members are effectively integrally combined together.

Claim 7

A hypodermic syringe body structure as claimed in claim 1 in which the integral tubular portion extends inwardly from the base a distance that is relatively short in relation to the length of said barrel member.

Claim 8

A hypodermic syringe body structure as claimed in claim 1 in which said means defining a stopper piercing spike member is a separately molded tubular plastic member having a tip at one end, said liquid transfer tube means comprising a separately molded plastic tube having an end portion fitting within said inner tubular means and another end portion fitting said tubular plastic stopper piercing spike member, means effectively bonding said liquid transfer tube to said tubular plastic stopper piercing spike member and to said inner tubular means and said stopper piercing spike member to said inner tubular means inwardly of said connector.

Claim 9

A hypodermic syringe body structure as claimed in claim 1 in which said tubular connector means is an enlarged internally threaded portion at said one end of said inner tubular means and includes a base portion having a recess therein, said means defining a stopper piercing spike comprising a separately molded tubular plastic member having a piercing tip at one end, a laterally extending flange inwardly of said tip and disposed in said recess, and a tubular extension projecting beyond said flange, said liquid transfer tube means comprising a separately molded member fitting said last-mentioned tubular extension and within said first-mentioned molded plastic inner tubular means, said flange of said molded plastic stopper piercing member, said base portion of said connector and one end of said liquid transfer tube means having mutual facing bonding surfaces, said transfer tube means and said first-mentioned inner tubular means having mutual facing bonding surfaces and means effectively bonding all said members together at least at said facing surface.

Claim 10

A hypodermic syringe body structure as claimed in claim 1 in which said tubular connector means is a separately molded plastic connector member having internal threads thereon and means operatively connecting said separately molded plastic member with said integral tubular portion that extends inwardly of said base.

Claim 11

A hypodermic syringe body structure as claimed in claim 1 in which said integral tubular portion that extends inwardly of the base includes an outer end portion having internal threads thereon and which outer end portion terminates at least adjacent said open end of said barrel means so as to constitute said tubular connector means as an integral part of said integral tubular portion.

Claim 12

A hypodermic syringe body structure as claimed in claim 1 in which said tubular connector means is a separately molded plastic connector member having internal threads thereon and means operatively connecting said separately molded plastic connector member with said separately molded tubular means.

Claim 13

A hypodermic syringe body structure as claimed in claim 1 in which said separately molded tubular means includes an outer end portion having internal Threads thereon and which outer end portion terminates at least adjacent said open end of said barrel means so as to constitute said tubular connector means as an integral part of said separately molded tubular means.

Claim 14

A hypodermic syringe body structure as claimed in claim 1 in which said tubular connector means is a separately molded plastic connector member including a base having an aperture therein, a tubular extension surrounding said aperture and projecting from one side of said base, a larger diameter internally threaded wall structure projecting from the opposite side of said base, one of said separately molded tubular means and said integral tubular portion that extends inwardly of said base of said barrel member having a terminal end portion disposed inwards of the open end of said barrel, said tubular extension fitting within said terminal end portion, and means effectively connecting said tubular extension with said terminal end portion.

Claim 15

A hypodermic syringe body structure as claimed in claim 13 in which said tubular extension includes a shaped internal wall surface tapering inwardly toward the base of said plastic connector member for centering said stopper piercing spike means.

Claim 16

A hypodermic syringe body structure as claimed in claim 1 in which said tubular connecting means has internal threads for cooperation with external threads on a stopper of a medicament vial, said liquid transfer tube means having an outer end portion, said stopper piercing spike means being a separately molded plastic member having a tubular end portion coaxially related with and extending axially inwards of the outer end of said liquid transfer tube means and a smaller diameter opposite end portion terminating in a stopper piercing tip coaxially within said tubular connector means, and means connecting said tubular end portion to said outer end portion of said liquid transfer tube means so as to permit said tubular end portion to turn relative to said liquid transfer tube means when the threads on such a stopper are being engaged with the threads on said tubular connecting means.

Claim 17

A hypodermic syringe body structure as claimed in claim 1 in which said tubular wall structure having the frangible portion is integral with said separately molded tubular means, said tubular connector means being integral with said integral tubular portion that extends inwardly of said base of said barrel member, said outer portion of said tubular wall structure having an outwardly flared bore portion for receiving a separate cannula, an external shaped flange on said tubular wall structure axially inwards of said flared bore portion and outwards of said frangible portion and constituting the male member of a snap lock connection, a separately molded shell member having an internal flange adjacent one end and an internal groove formation adjacent the other end that constitutes the female member of a snap lock connection, said shell member being dimensioned to fit over said tubular wall structure with the male and female members of said snap lock connection in engagement and said internal flange disposed axially outwards of the end of said tubular wall structure so as to define with said outwardly flared portion a bonding material receiving and confining pocket, a cannula in said pocket and bonding material bonding the cannula in place.

Claim 18

A hypodermic syringe body structure for association with a liquid medicament container of the type container a pierceable stopper having a connector thereon, said body structure comprising a molded plastic barrel member having an open end, a base opposite said open end having an aperture therethrough and an integral guide sleeve surrounding the aperture in said base and extending inwardly of said base a distance that is relatively short in relation to the axial extent of said barrel member, a molded plastic inner tubular member having a connector at one end for cooperation with and connection to the connector of such a medicament containEr, said inner tubular member including a portion fitting within said guide sleeve of said barrel member, said inner tubular member also having a base at its other end having a bore therethrough and an integral tube-receiving sleeve extending inwardly of said second-mentioned base, and communicating with said bore, said base and sleeve including aligned inner wall portions defining a bonding material receiving pocket and a tube-receiving bore in inward continuation of said pocket and of less cross-sectional area than said pocket, a liquid transfer tube having an intermediate portion disposed through said last-mentioned bore and pocket, an end portion extending from said intermediate portion to terminate at least slightly beyond the base of said barrel member and an opposite end portion terminating at least approximately at the level of said one end of said inner tubular member, the liquid transfer tube spaced from said inner tubular member over a major portion of its length, said opposite end portion of said transfer tube being shaped to define a stopper piercing spike, bonding means at least within said pocket and surrounding said intermediate portion of said tube to connect said tube to said inner tubular member, said barrel member having a tubular extension projecting outwardly of the aperture in said first-mentioned bore, said tubular extension having a frangible portion outwards of said base of said barrel member, means operatively connected with said tubular extension outwards of said frangible portion for receiving a cannula, said internal guide sleeve being radially outwards of the aperture through the bore of said barrel member, and means connecting the outer surface of the base of said inner tubular member to an inner surface of the base of said barrel member radially inwardly of said internal guide sleeve.

Claim 19

A hypodermic syringe body structure for association with a liquid medicament container of the type container a pierceable stopper having a connector thereon, said body structure comprising a molded plastic barrel member having an open end, a base opposite said open end having an aperture therethrough and an integral guide sleeve surrounding the aperture in said base and extending inwardly of said base a distance that is relatively short in relation to the axial extent of said barrel member, a molded plastic inner tubular member having a connector at one end for cooperation with and connection to the connector of such a medicament containEr, said inner tubular member including a portion fitting within said guide sleeve of said barrel member, said inner tubular member also having a base at its other end having a bore therethrough and an integral tube-receiving sleeve extending inwardly of said second-mentioned base, and communicating with said bore, said base and sleeve including aligned inner wall portions defining a bonding material receiving pocket and a tube-receiving bore in inward continuation of said pocket and of less cross-sectional area than said pocket, a liquid transfer tube having an intermediate portion disposed through said last-mentioned bore and pocket, an end portion extending from said intermediate portion to terminate at least slightly beyond the base of said barrel member and an opposite end portion terminating at least approximately at the level of said one end of said inner tubular member, the liquid transfer tube spaced from said inner tubular member over a major portion of its length, said opposite end portion of said transfer tube being shaped to define a stopper piercing spike, bonding means at least within said pocket and surrounding said intermediate portion of said tube to connect said tube to said inner tubular member, said barrel member having a tubular extension projecting outwardly of the aperture in said first-mentioned bore, said tubular extension having a frangible portion outwards of said base of said barrel member, means operatively connected with said tubular extension outwards of said frangible portion for receiving a cannula, said internal guide sleeve being radially outwards of the aperture through the bore of said barrel member, and means connecting the outer surface of the base of said inner tubular member to an inner surface of the base of said barrel member radially inwardly of said internal guide sleeve.

Claim 20

A hypodermic syringe body structure as claimed in claim 17 and said connector at one end of said inner tubular member comprising an internally threaded portion extending inwardly from said one end.

Claim 21

A hypodermic syringe body structure as claimed in claim 17 and circumferentially spaced integral stiffening rib means extending between the base of said barrel member and said internal guide sleeve.

Claim 22

A hypodermic syringe body structure as claimed in claim 17 and circumferentially spaced stiffening ribs integral with said inner tubular member and extending radially outwards of and along the exterior of said member throughout the major axial extent thereof.

Claim 23

A hypodermic syringe body structure for association with a liquid medicament container of the type including a pierceable stopper having a connector thereon, said body structure comprising a molded plastic barrel member having an open end, a base opposite said open end having an aperture therethrough and an integral, internal guide sleeve surrounding the aperture in said base and extending inwardly of said base a distance that is relatively short in relation to the axial extent of said barrel member, a molded plastic inner tubular member having an intermediate portion fitting within said guide sleeve, a connector means at one end of said inner tubular member for cooperation with and connection to the connector of such a medicament container and a tubular extension portion in continuation of said intermediate portion and projecting outwardly of the base of said barrel member, said tubular extension portion having a frangible portion outwards of said base of said barrel member, means operatively connected with said tubular extension portion outwards of said frangible portion for receiving a cannula, a molded plastic liquid transfer tube fitting within said inner tubular member and having an end portion terminating at least approximately at the level of said one end of said inner tubular portion, said end portion of said transfer tube being shaped to define a stopper piercing spike, said internal guide sleeve and inner tubular member having mutually facing bonding surfaces extending latErally of the major axes of said members, said liquid transfer tube having at least one bonding surface extending laterally of the major axis thereof, said inner tubular member also having at least one laterally extending bonding surface facing said bonding surface of said transfer tube, and means connecting said transfer tube to said inner tubular member and said inner tubular member to said barrel member at least at said bonding surfaces.

Claim 24

A hypodermic syringe body structure for association with a liquid medicament container of the type including a pierceable stopper having a connector thereon, said body structure comprising a molded plastic barrel member having an open end, a base opposite said open end having an aperture therethrough and an integral, internal guide sleeve surrounding the aperture in said base and extending inwardly of said base a distance that is relatively short in relation to the axial extent of said barrel member, a molded plastic inner tubular member having an intermediate portion fitting within said guide sleeve, a connector means at one end of said inner tubular member for cooperation with and connection to the connector of such a medicament container and a tubular extension portion in continuation of said intermediate portion and projecting outwardly of the base of said barrel member, said tubular extension portion having a frangible portion outwards of said base of said barrel member, means operatively connected with said tubular extension portion outwards of said frangible portion for receiving a cannula, a molded plastic liquid transfer tube fitting within said inner tubular member and having an end portion terminating at least approximately at the level of said one end of said inner tubular portion, said end portion of said transfer tube being shaped to define a stopper piercing spike, said internal guide sleeve and inner tubular member having mutually facing bonding surfaces extending latErally of the major axes of said members, said liquid transfer tube having at least one bonding surface extending laterally of the major axis thereof, said inner tubular member also having at least one laterally extending bonding surface facing said bonding surface of said transfer tube, and means connecting said transfer tube to said inner tubular member and said inner tubular member to said barrel member at least at said bonding surfaces.

Claim 25

A hypodermic syringe body structure as claimed in claim 21 and circumferentially spaced integral stiffening ribs extending between said base of said barrel member and said internal guide sleeve.

Claim 26

A hypodermic syringe body structure as claimed in claim 21 and said connector means at said one end of said inner tubular member comprising an internally threaded portion extending inwardly from said one end.

Claim 27

A hypodermic syringe body structure as claimed in claim 21 and said inner tubular member having stepped internal diameter portions increasing in size inwardly from the end thereof remote from said connector means including a portion of an internal diameter greater than the external diameter of said transfer tube and extending axially of said inner tubular member for a substantial extent thereof between said internal guide sleeve and said connector means, and said plastic liquid transfer tube having integral circumferentially spaced stiffening ribs extending radially outwards of said transfer tube over a substantial axial extent of the portion thereof that extends between said internal guide sleeve and said connector.

Claim 28

A hypodermic syringe body structure as claimed in claim 24 and integral circumferentially spaced stiffening ribs extending radially outwards of said inner tubular member over at least a substantial longitudinal extent thereof between said internal guide sleeve and said connector.

Claim 29

A hypodermic syringe body structure as claimed in claim 21 and said internal guide sleeve having stepped internal surface portions of different cross-sectional areas including a first internal surface portion extending inwardly from said base of said barrel member and a second internal surface portion extending longitudinally inwardly from said first internal surface portion, said surface portions being separated by an internal shoulder on said internal guide sleeve, said inner tubular member having stepped external surface portions and an external shoulder complementary with said internal stepped surface portions and internal shoulder of said internal guide sleeve.

Claim 30

A hypodermic syringe body structure as claimed in claim 26 and said first stepped internal surface portion of said internal guide sleeve and the complementary external surface portion of said inner tubular member being polygonal in cross section.

Claim 31

A hypodermic syringe body structure for association with a liquid medicament container of the type including a pierceable stopper having an externally threaded connector portion, said body structure comprising a molded plastic barrel means open at one end and including an outer wall, a base opposite said open end and an integral tubular portion extending inwardly of said base toward said open end, a separately molded tubular means constituting a crown member and including a base, a plurality of integral coaxial tubular sleeve structures projecting from one side of said base and including at least a first sleeve structure disposed centrally of said base and a second sleeve structure radially outwards of said first sleeve structure and including an outer wall surface, at least a portion of which fits within and contacts at least a portion of the interior of said integral tubular portion, a tubular extension projecting from the opposite side of said base of said crown member coaxially of said first sleeve structure, said tubular extension having an outer portion for operative association with a separate cannula, said tubular extension including a frangible portion between said outer portion and the base of said crown member so that the outer portion of said tubular extension and an associated cannula can be broken off after a single use, said first mentioned sleeve structure having a shaped internal bore communicating with the interior of said tubular extension, said shaped internal bore including an inner tube receiving portion and an outer enlarged portion constituting a bonding material receiving pocket, a liquid transfer tube having at least a portion disposed within said pocket, bonding material within said pocket and surrounding the portion of said transfer tube disposed therein to connect said transfer tube to said first sleeve structure and thus to said crown member to said barrel means, threaded connector means carried by said integral tubular portion and located at the open end of said barrel means so as to connect said syringe body structure to a stopper of a medicament vial, and a hollow stopper piercing spike carried by said liquid transfer tube and extending within said threaded connector means.

Claim 32

A hypodermic syringe body structure for association with a liquid medicament container of the type including a pierceable stopper having an externally threaded connector portion, said body structure comprising a molded plastic barrel means open at one end and including an outer wall, a base opposite said open end and an integral tubular portion extending inwardly of said base toward said open end, a separately molded tubular means constituting a crown member and including a base, a plurality of integral coaxial tubular sleeve structures projecting from one side of said base and including at least a first sleeve structure disposed centrally of said base and a second sleeve structure radially outwards of said first sleeve structure and including an outer wall surface, at least a portion of which fits within and contacts at least a portion of the interior of said integral tubular portion, a tubular extension projecting from the opposite side of said base of said crown member coaxially of said first sleeve structure, said tubular extension having an outer portion for operative association with a separate cannula, said tubular extension including a frangible portion between said outer portion and the base of said crown member so that the outer portion of said tubular extension and an associated cannula can be broken off after a single use, said first mentioned sleeve structure having a shaped internal bore communicating with the interior of said tubular extension, said shaped internal bore including an inner tube receiving portion and an outer enlarged portion constituting a bonding material receiving pocket, a liquid transfer tube having at least a portion disposed within said pocket, bonding material within said pocket and surrounding the portion of said transfer tube disposed therein to connect said transfer tube to said first sleeve structure and thus to said crown member to said barrel means, threaded connector means carried by said integral tubular portion and located at the open end of said barrel means so as to connect said syringe body structure to a stopper of a medicament vial, and a hollow stopper piercing spike carried by said liquid transfer tube and extending within said threaded connector means.

Claim 33

A hypodermic syringe body structure as claimed in claim 28 in which said barrel means and crown member are of compatible plastic, said base of said barrel means having a recess therein, said base of said crown member having a rim portion laterally outwards of said second sleeve structure, said rim portion fitting within said recess and the means operatively connecting said crown member to said barrel means including a sonic weld connection between said rim and the facing surface of said recess.

Claim 34

A hypodermic syringe body as claimed in claim 28 in which said crown member includes a third sleeve structure extending from said one side of the base of the crown member radially outwards of said second sleeve structure and having a length that is relatively short in relation to the length of said second sleeve structure, said integral tubular portion extending inwardly of the base of the barrel means including a larger diameter portion adjacent the base of the barrel means, said larger diameter portion having an internal annular groove therein, said third sleeve structure having an external projecting annular bead formation for cooperative association within said groove to provide a snap lock connection between said crown member and said barrel means.

Claim 35

A hypodermic syringe structure as claimed in claim 28 in which said connector means comprises an integral internally threaded outer portion of said integral tubular portion that extends inwardly of the base of said barrel member, a web structure within said integral tubular portion and located inwards of said internally threaded portion, an integral tubular extension of said web structure facing the base end of said barrel means and having a bore surface tapering inwardly toward the open end of said barrel means for guiding and centering the piercing spike when the crown member and associated liquid transfer tube and piercing spike are fitted within said integral tubular portion that extends inwards of the base of said barrel means.

Claim 36

A hypodermic syringe body structure as claimed in claim 28, said integral tubular portion having an inwardly directed annular bead formation located in inward spaced relation to the outer end of said tubular portion, said connector means comprising a separately molded plastic connector member including a base, an internally threaded sleeve portion extending from one side of the base of the connector member for cooperation with the externally threaded portion of the stopper of a medicament container, a tubular extension structure projecting from the other side of the base of said connector member, said tubular extension structure including a cylindrical portion having an internal annular groove therein for cooperative engagement with the internal bead structure on said integral tubular portion to provide a snap lock connection between said connector member and said integral tubular portion, said tubular extension structure having a bore surface tapering inwardly toward the base of the connector member for guiding and centering the piercing spike when the crown member and associated liquid transfer tube and piercing spike is fit within said integral tubular portion that extends inwards of the base of said barrel means.

Claim 37

A hypodermic syringe body structure as claimed in claim 28 in which said tubular extension projecting from the opposite side of said base of said crown member includes an end, an externally shaped flange means axially outwards of said frangible portion and constituting the male member of a snap lock connection, said tubular extension having an outwardly flared bore portion leading to its end for receiving a separate cannula, a separately molded shell member having an internal flange adjacent one end and an internal groove formation adjacent the other end that constitutes the female member of a snap lock connection, said shell member being dimensioned to fit over said tubular extension with the male and female members of said snap lock connection in engagement and said internal flange disposed axially outwards of the end of said tubular extension so as to define with said outwardly flared portion a bonding material receiving and confining pocket, a cannula in said pocket and bonding material bonding the cannula in place.

Claim 38

A hypodermic syringe body structure as claimed inclaim 28 in which said connector means comprises an integral internally threaded outer portion of said integral tubular portion that extends inwardly of the base of said barrel member, an integral tubular structure within said integral tubular portion and located inwards of said internally threaded portion, said integral tubular structure facing the base end of said barrel means and having a bore surface tapering inwardly toward the open end of said barrel means for guiding and centering the piercing spike when the crown member and associated liquid transfer tube and piercing spike are fitted within said integral tubular portion that extends inwards of the base of said barrel means.