Fluid infusion apparatus

• US 3,993,065 A
• Filed: 05/20/1975
• Issued: 11/23/1976
• Est. Priority Date: 05/20/1975
• Status: Expired due to Term

• Current Assignee: Daltex Industries Incorporated
• Original Assignee: Anthony W. Szabo, Louis R. M. Del Guercio
• Inventors: Szabo, Anthony W., Del Guercio, Louis R. M.
• Primary Examiner(s): Yasko, John D.
• Application Number:
  US05/579,232
• Time in Patent Office: 553 Days
• Field of Search: 128/218 A, 128/218 R, 128/218 F, 128/214 F, 128/215, 128/DIG. 12, 128/DIG. 13, 128/2 R, 222/386, 222/390, 222/391, 222/309, 222/175
• US Class Current: 604/154
• CPC Class Codes: A61M 2005/14506 mechanically driven, e.g. spring or clockwork
• CPC Class Codes: A61M 5/14546 Front-loading type injectors
• CPC Class Codes: A61M 5/14566 with a replaceable reservoir for receiving a piston rod of the pump
• CPC Class Codes: Y10S 128/12 Pressure infusion

Abstract

An improved fluid infusion apparatus is presented of the type having a power means and a syringe connected therewith. The syringe is comprised, in part, of a piston and a cylindrical body. The improvement comprises a flexible connecting member for connecting the piston of the syringe to the power means, thereby permitting the syringe to be responsive to the power means, even when the two are not coaxially aligned, for the administration of a predetermined amount of fluid at a predetermined rate.

Claims

1. An improved fluid infusion apparatus for an ambulatory patient of the type having a portable power and timing means mountable to the patient and received in a housing and a syringe operable thereby, said syringe comprising in part a piston, received in a cylindrical body, said apparatus for administering a predetermined amount of fluid at a predetermined rate over an extended time period, wherein the improvement comprises a flexible connecting member connecting said syringe to said power means for causing said piston of said syringe to be responsive to said power and timing means and means attached to said housing for securement to a patient.

2. An apparatus in accordance with claim 1 wherein said power timing means includes a housing therefor wherein said flexible connecting member includes an elongated flexible rod and an elongated flexible casing concentrically surrounding said flexible rod, said apparatus further comprising means for removably attaching said elongated flexible casing to said syringe and to said housing of said power and timing means.

3. An apparatus in accordance with claim 2 wherein said means comprises removable connecting clips that are coaxially and slidably mounted on said flexible casing, one of said clips for sliding into engagement with said syringe so as to connect said syringe to said casing, and one of said clips for sliding into engagement with said housing so as to connect said housing to said casing.

4. An apparatus in accordance with claim 1 wherein said flexible member comprises an elongated flexible rod which connects said piston to said power and timing means.

5. An apparatus in accordance with claim 4 wherein said flexible member further comprises an elongated flexible casing concentrically surrounding said flexible rod connecting said housing of said power and timing means to said cylindrical body of said syringe, and for permitting longitudinal movement therein of said flexible rod relative to said housing and said cylindrical body of said syringe.

6. An apparatus in accordance with claim 5 further including removable connecting clips that are coaxially and slidably mounted on said flexible casing, one of said clips for sliding into engagement with said body of said syringe so as to connect said syringe to said casing, and one of said clips for sliding into engagement with said housing so as to connect said housing to said casing.