Syringe barrel assembly

• US 4,758,230 A
• Filed: 02/20/1986
• Issued: 07/19/1988
• Est. Priority Date: 02/20/1986
• Status: Expired due to Term

• Current Assignee: Becton, Dickinson & Co
• Original Assignee: Becton, Dickinson & Co
• Inventors: Rycroft, Alan K.
• Primary Examiner(s): Pellegrino, Stephen C.
• Application Number:
  US06/831,736
• Time in Patent Office: 880 Days
• Field of Search: 604/187, 604/192, 604/198, 604/201, 604/204, 604/206, 206/366, 206/DIG. 820, 206/
• US Class Current: 604/198
• CPC Class Codes: A61M 5/282 by compression of deformable ampoule or carpule wall
• CPC Class Codes: A61M 5/284 comprising means for injection of two or more media, e.g. by mixing
• CPC Class Codes: A61M 5/288 by piercing without internal pressure increase A61M5/283 takes precedence
• CPC Class Codes: A61M 5/3202 Devices for protection of the needle before use, e.g. caps A61M5/50 takes precedence; for infusion spikes A61M5/1626; protectors for sharps A61B50/3001
• CPC Class Codes: A61M 5/346 friction fit A61M5/344 takes precedence
• CPC Class Codes: A61M 5/349 using adhesive bond or glues

Abstract

A syringe barrel assembly includes a plurality of syringe barrels each containing a barrel portion having an open proximal end, a chamber for retaining fluid, and a tip portion extending from a distal end of the barrel portion having a passageway therethrough. The passageway is adapted to accept the hub and second cannula of the hypodermic needle assembly having a hub, a first cannula extending outwardly from a distal end of the hub and a second cannula extending outwardly from a proximal end of the hub wherein the cannulae are in fluid communication. Piercable barrier means is provided in each of said passageways for preventing fluid communication between the chamber and the passageway. A plurality of web portions extending radially outwardly from the tip portions connects the syringe barrel. The web portions are integrally formed from the same material as the syringe barrels. The web portions and the syringe barrels are connected so that the syringe barrels are spaced apart from each other along the substantially straight line wherein the longitudinal axes of the syringe barrel are substantially parallel to each other.

Claims

1. A syringe barrel assembly comprising:

a plurality of syringe barrels each including a barrel portion having an open proximal end, a chamber for retaining fluid, and a tip portion extending from a distal end of said barrel portion having a passageway therethrough;

pierceable barrier means in each of said passageways for preventing fluid communication between said chamber at said passageway; and

a plurality of web portions extending radially outwardly from said tip portions connecting said syringe barrels, said web portions being integrally formed from the same material as said syringe barrels, said web portions and said syringe barrels being connected so that said syringe barrels are spaced apart from each other along a substantially straight line wherein the longitudinal axes of said syringe barrels are substantially parallel to each other;

a hub movably positioned in each of said passageways, said hub having a forward end, a rearward end and a conduit therethrough;

a first cannula extending outwardly from said forward end of each of said hubs and a second cannula extending outwardly from said rearward end of each of said hubs, said first cannula and said second cannula being in fluid communication;

a needle shield movably engaging each of said tips covering said first cannula, said needle shield having an outer extension portion extending over a portion of said tip, said outer extension portion being capable of contacting said web portion for limiting the motion of said needle shield toward the proximal end of said barrel, said outer extension portion including a longitudinal groove being wider than said web portion and capable of receiving said web portion; and

said needle shield having an inner extension portion projecting proximally into said passageway and capable of contacting said hub, said inner extension portion being long enough so that when said needle shield is rotated to align said groove and said web portion, and moved in a proximal direction with respect to said tip portion so that said web portion enters said groove, said inner extension portion pushes against said hub and moves said hub in a proximal direction causing said second cannula to pierce said pierceable barrier means.

2. The syringe barrel assembly of claim 1 wherein said syringe barrels are spaced equally from each other when the distance between said syringe barrels is measured along said web portions.

3. The syringe barrel assembly of claim 1 wherein each of said web portions is planar shaped.

4. The syringe barrel assembly of claim 3 wherein said web portions are parallel to the longitudinal in its place of said tip portions.

5. The syringe barrel assembly of claim 1 wherein the portion of said barrel portions defining said chambers and said proximal end of each of said barrel portions are flexible.

6. The syringe barrel assembly of claim 5 wherein said flexible portions of said barrel portions are capable of being deformed by application of digital pressure.

7. The syringe barrel assembly of claim 6 further including a quantity of medication in each of said chambers.

8. The syringe barrel assembly of claim 7 wherein said proximal end of each of said barrel portions is sealed shut forming a fluid-tight chamber.

9. The syringe barrel assembly of claim 1 wherein the portion of said barrel portion defining said chamber of each of said syringe barrels is rigid and has a substantially circularly shaped cross section.

10. The syringe barrel assembly of claim 9 further including a quantity of medication in each of said chambers.

11. The syringe barrel assembly of claim 10 further including a stopper slidably positioned in fluid-tight engagement inside each of said barrel portions adapted to engage a plunger rod to facilitate its operation.

12. The syringe barrel assembly of claim 1 wherein said syringe barrel assembly is made of thermoplastic material.

13. The syringe barrel assembly of claim 12 wherein said thermoplastic material is selected from the group consisting of polypropylene and polyethylene.

14. A plurality of syringe barrel assemblies in accordance with claim 1 wherein said syringe barrel assemblies are nested together in rows so that the individual syringe barrels in alternate rows are in approximate alignment with each other forming orthogonal rows and columns of said syringe barrels in said alternate rows.

15. The plurality of syringe barrel assemblies of claim 14 further including holding means for holding said syringe barrel assemblies together in said nesting relationship during handling.

16. The plurality of syringe barrel assemblies of claim 15 further including a bacteria impervious package enveloping said syringe barrel assemblies.

17. A syringe barrel assembly comprising:

a plurality of thermoplastic syringe barrels each including a barrel portion having an open flexible proximal end, a flexible chamber for retaining fluid, and a tip portion extending from a distal end of said barrel portion having a passageway therethrough;

pierceable barrier means in each of said passageways for preventing fluid communication between said chamber and said passageway; and

a plurality of planar shaped web portions extending radially outwardly from said tip portions connecting said syringe barrels, said web portions being substantially parallel to the longitudinal axis of said tip portions, said web portions being integrally formed from the same thermoplastic material as said syringe barrels, said web portions and said syringe barrels being connected so that said syringe barrels are spaced apart from each other along a substantially straight line;

a hub movably positioned in each of said passageways, said hub having a forward end, a rearward end and a conduit therethrough;

a first cannula extending outwardly from said forward end of each of said hubs and a second cannula extending outwardly from said rearward end of each of said hubs, said first cannula and said second cannula being in fluid communication;

a needle shield movably engaging each of said tips covering said first cannula, said needle shield having an outer extension portion extending over a portion of said tip, said outer extension portion being capable of contacting said web portion for limiting the motion of said needle shield toward the proximal end of said barrel, said outer extension portion including a longitudinal groove being wider than said web portion and capable of receiving said web portion; and

said needle shield having an inner extension portion projecting proximally into said passageway and capable of contacting said hub, said inner extension portion being long enough so that when said needle shield is rotated to align said groove and said web portion, and moved in a proximal direction with respect to said tip portion so that said web portion enters said groove, said inner extension portion pushes against said hub and moves said hub in a proximal direction causing said second cannula to pierce said pierceable barrier means.

18. A syringe barrel assembly comprising:

a plurality of thermoplastic syringe barrels each including a rigid cylindrical barrel portion having an open proximal end, a chamber for retaining fluid, and a tip portion extending from a distal end of said barrel portion having a passageway therethrough;

pierceable barrier means in each of said passageways for preventing fluid communication between said chamber and said passageway; and

a plurality of web portions between said syringe barrels and connecting said syringe barrels, said web portions being integrally formed from the same thermoplastic material as said syringe barrels, said web portions and said syringe barrels being connected so that said syringe barrels are spaced apart from each other along a substantially straight line wherein the longitudinal axes of said syringe barrels are substantially parallel to each other;

a hub movably positioned in each of said passageways, said hub having a forward end, a rearward end and a conduit therethrough;

a first cannula extending outwardly from said forward end of each of said hubs and a second cannula extending outwardly from said rearward end of each of said hubs, said first cannula and said second cannula being in fluid communication;

a needle shield movably engaging each of said tips covering said first cannula, said needle shield having an outer extension portion extending over a portion of said tip, said outer extension portion being capable of contacting said web portion for limiting the motion of said needle shield toward the proximal end of said barrel, said outer extension portion including a longitudinal groove being wider than said web portion and capable of receiving said web portion; and

said needle shield having an inner extension portion projecting proximally into said passageway and capable of contacting said hub, said innner extension portion being long enough so that when said needle shield is rotated to align said groove and said web portion, and moved in a proximal direction with respect to said tip portion so that said web portion enters said groove, said inner extension portion pushes against said hub and moves said hub in a proximal direction causing said second cannula to pierce said pierceable barrier means.