Adjustable blocking means for dosage regulation

• US 4,073,321 A
• Filed: 03/15/1976
• Issued: 02/14/1978
• Est. Priority Date: 03/15/1976
• Status: Expired due to Term

• Current Assignee: George Moskowitz
• Original Assignee: George Moskowitz
• Inventors: Moskowitz, George
• Primary Examiner(s): Bell, Houston S.
• Application Number:
  US05/666,957
• Time in Patent Office: 701 Days
• Field of Search: 141/2, 141/1, 141/18, 141/21, 141/27, 141/94, 141/115, 141/116, 141/367, 141/368, 141/369, 141/370, 141/371, 141/372, 141/373, 141/378, 222/309, 128/218 C, 23/253, 23/259, 73/425.6, 33/1 V
• US Class Current: 141/27
• CPC Class Codes: A61M 5/1782 Devices aiding filling of syringes in situ combination of a vial and a syringe for transferring or mixing their contents A61J1/2096, filling of medical containers in general B65B3/003
• CPC Class Codes: A61M 5/31501 Means for blocking or restricting the movement of the rod or piston A61M5/5013 takes precedence

Abstract

A device is disclosed for regulating the dosage of a fluid in a syringe by using blocking means to control the amount of fluid which may be taken into the barrel of the syringe.

Claims

1. A device for regulating the dosage of a fluid in a syringe having a plunger with a fluid-holding barrel and a stop at the top of said fluid-holding barrel comprising blocking means removeably secured to the plunger of the syringe placed between the plunger end of the syringe and the stop at the top of the syringe fluid-holding barrel, said blocking means comprising a top portion, a bottom portion, two side portions, two end portions, and an arcular trough type opening extending from one end portion to the other end portion through said top portion;

said blocking means working automatically without being held manually;

whereby, during the filling of the filling of the syringe, when said plunger end is pressed toward said top, said blocking means allows any excess fluid to be rejected from said fluid-holding barrel, retaining only the desired dosage of said fluid in said barrel.

2. A device according to claim 1 wherein said blocking means comprises a regulator comprising:

a. a plurality of sections secured together, and

b. said arcular trough-type opening comprising a plurality of troughtype openings, one in each of said plurality of sections and forming a single arcular trough-type opening of length equal to the total length of said plurality of trough-type openings;

whereby the plunger of said syringe may be placed within the single arcular trough-type opening with sufficient pressure on said plunger to secure said regulator to said plunger.

3. A device according to claim 2 wherein said plurality of sections comprises two end sections and a plurality of center sections whereby said plurality of center sections may be added to increase the length of said regulator and thereby change the desired dosage of said fluid in said barrel.

4. A device according to claim 3 wherein each of said two end sections comprises a blocking end which may press against either said plunger end of the syringe or said stop at the top of the syringe fluid-holding barrel;

and a connecting end which is secured to another of said plurality of sections of said regulator.

5. A device according to claim 4 wherein each of said two end sections further comprises an insert extending from said connnecting end and an opening in said connecting end.

6. A device according to claim 5 wherein said two end sections of said regulator are secured together by placing the insert on the first end section into the opening on the second end section and the insert on the second end section into the opening on the first end section.

7. A device according to claim 6 wherein each of said plurality of center sections has two connecting ends for securing said plurality of center sections to said two end sections to form said regulator.

8. A device according to claim 7 wherein each of said two connecting ends has an insert extending from it and an opening extending into it.

9. A device for regulating the dosage of a fluid in a syringe having a plunger with a fluid-holding barrel and a stop at the top of said fluid-holding barrel comprising blocking means a plunger grip having two ends and an opening, operative to attach said regulator to the syringe plunger;

and a shaft connected to said plunger grip, extending within the syringe fluid-holding barrel and pressing against the syringe plunger head, said blocking means being placed within the syringe fluid-holding barrel and pressing against the syringe plunger head whereby the syringe plunger head is restricted from movement past a pre-determined point thereby restricting the quantity of fluid which may be drawn into said fluid-holding barrel to a pre-determined dosage during the filling of the syringe.

10. A device according to claim 9 wherein said blocking means is also pressed against the stop at the top of the syringe fluid-holding barrel.

11. A device according to claim 10 wherein one end of said plunger grip is pressed against the stop at the top of the syringe fluid-holding barrel and the second end is pressed against by a force means to stabilize said regulator.

12. A device according to claim 11 wherein said syringe plunger fits snugly within said opening in said plunger grip in order to secure said regulator to said syringe plunger.

13. A device according to claim 12 wherein said shaft may be of varying lengths in order to change the pre-determined point to which the syringe plunger head may be moved in order to change the pre-determined dosage.

14. A device for regulating the dosage of a fluid in a syringe having a plunger with a fluid-holding barrel and a stop at the top of said fluid-holding barrel comprising blocking means secured to the syringe barrel and operative to stop movement of the syringe plunger end;

said blocking means being a regulator comprising;

a. a plurality of sections secured together;

b. a barrel grip connected to the end of one of said plurality of sections and securing said regulator to said syringe barrel; and

c. a plunger stop connected to the end of another of said plurality of sections and operative to restrict movement of said syringe plunger;

whereby movement of the syringe, during the filling of the syringe plunger end is restricted, thereby restricting the quantity of fluid which may be drawn into the syringe barrel to a pre-determined dosage.

15. A device according to claim 14 wherein said plurality of sections comprises two end sections and a plurality of center sections whereby said plurality of center sections may be added to increase the length of said regulator and thereby change the desired dosage of said fluid in said syringe barrel.

16. A device according to claim 15 wherein one of said two end sections contains a barrel grip and a first connecting means and the other of said two end sections contains a plunger stop and a second connecting means.

17. A device according to claim 16 wherein said first and second connecting means are an insert in one end section and an opening in the other end section, whereby said insert may be placed in said opening to secure the end sections together.

18. A device according to claim 17 wherein each of said plurality of center sections has two ends with an insert extending from one end and an opening in the other end,

whereby a desired number of said plurality of center sections may be secured between said two end sections to increase the length of said regulator and thereby change the desired dosage of said fluid in said syringe barrel.