ACTUATOR AND DEVICE FOR SYNCHRONIZED INJECTION AND ASPIRATION

• US 20200129695A1
• Filed: 06/25/2018
• Published: 04/30/2020
• Est. Priority Date: 06/26/2017
• Status: Active Grant

• Current Assignee: VVT Medical Ltd.
• Original Assignee: VVT Medical Ltd.
• Inventors: BRANDEIS, Zeev
• Granted Patent: US 11,305,060 B2
• Time in Patent Office: Days
• CPC Class Codes: A61M 1/77 Suction-irrigation systems aspiration tips supplying fluids A61M1/85; specific for negative pressure wound therapy A61M1/92; combined with tracheal tubes A61M16/0463
• CPC Class Codes: A61M 1/774 Handpieces specially adapted for providing suction as well as irrigation, either simultaneously or independently
• CPC Class Codes: A61M 1/81 Piston pumps, e.g. syringes
• CPC Class Codes: A61M 1/815 the barrel serving as aspiration container, e.g. in a breast pump
• CPC Class Codes: A61M 3/0279 Cannula; Nozzles; Tips; their connection means
• CPC Class Codes: A61M 5/14216 Reciprocating piston type
• CPC Class Codes: A61M 5/14566 with a replaceable reservoir for receiving a piston rod of the pump
• CPC Class Codes: A61M 5/19 having more than one chamber , e.g. including a manifold coupling two parallelly aligned syringes through separate channels to a common discharge assembly surgical glue applicators A61B17/00491
• CPC Class Codes: A61M 5/3137 Specially designed finger grip means, e.g. for easy manipulation of the syringe rod
• CPC Class Codes: A61M 5/3148 Means for causing or aiding aspiration or plunger retraction
• CPC Class Codes: A61M 5/31511 Piston or piston-rod constructions, e.g. connection of piston with piston-rod A61M5/5066 takes precedence
• CPC Class Codes: A61M 5/31581 performed by rotationally moving or pivoting actuator operated by user, e.g. an injection lever or handle

Abstract

An actuator for synchronized injection and aspiration, comprising: a first rod, having a length equal to an inner length between a head of a first plunger of a first standard-size syringe and a seal of the first plunger, and having a width smaller than a gap created between the first plunger and a barrel of the first standard-size syringe; a second rod, having a length equal to an inner length between a head of a second plunger of a second standard-size syringe and a seal of the second plunger, and having a width smaller than a gap created between the second plunger and a barrel of the second standard-size syringe; a flexible connector mechanically attached to a distal end of the first rod at a first end and to a distal end of the second rod at a second end.

Claims

1. A device comprising a housing fitted to hold standard-size syringes and an actuator for synchronized injection and aspiration, comprising:

wherein the actuator comprises

a first rod, having a length equal to an inner length between a head of a first plunger of a first standard-size syringe and a seal of said first plunger, and having a width smaller than a gap created between said first plunger and a barrel of said first standard-size syringe;

a second rod, having a length equal to an inner length between a head of a second plunger of a second standard-size syringe and a seal of said second plunger, and having a width smaller than a gap created between said second plunger and a barrel of said second standard-size syringe;

a flexible connector mechanically attached to a distal end of said first rod at a first end and to a distal end of said second rod at a second end;

wherein the housing having syringe mounts for holding said first standard-size syringe and said second standard-size syringe and an anchor for supporting a distally disposed curve portion of said flexible connector and movement of said flexible connector while said first plunger is pressed to inject fluid from said first standard-size syringe and the second syringe automatically and simultaneously aspirates fluid, enabling single-hand operation.

3. The actuator of claim 1, wherein:

said first rod includes a first holder at a proximal end, said first holder is detachably mechanically coupled to said first plunger; and

said second rod includes a second holder at a proximal end, said second holder is detachably mechanically coupled to said second plunger.

4. The actuator of claim 1, wherein said first rod and said second rod are tubes, and said flexible connector is a sting inserted into said tubes.

5. The actuator of claim 1, further comprising:

a one-way mechanism which allows said flexible connector to move only in one direction.

6. The actuator of claim 1, wherein said first rod and said second rod are having a profile with a 90 degrees corner, to fit within an X-shaped profile of plungers.

8. A device comprising the actuator of claim 1, further comprising:

a grip; and

a trigger coupled to a pushing rod which pushes said first plunger.

2. (canceled)

7. (canceled)

9. A method for enabling single-hand operation of standard-size syringes for synchronized injection and aspiration, comprising:

placing first and second standard-size syringes in mounts of a housing fitted to hold standard-size syringes, the housing having an actuator for supporting a distally disposed curve portion of a flexible connector and movement of said flexible connector while a first plunger in the first standard-size syringe is pressed to inject fluid from said first standard-size syringe and the second standard-size syringe automatically and simultaneously aspirates fluid;

distally displacing a first plunger of the first standard-size syringe to inject fluid from said first standard-size syringe;

distally displacing a first rod, said rod having a length equal to an inner length between a head of said first plunger and a seal of said first plunger, and having a width smaller than a gap created between said first plunger and a barrel of said first standard-size syringe;

distally displacing a first end of the flexible connector which is mechanically attached to a distal end of said first rod is distally displaced;

proximally displacing a second end of said flexible connector which is mechanically attached to a distal end of a second rod;

proximally displacing a second rod, said second rod having a length equal to an inner length between a head of a second plunger of the second standard-size syringe and a seal of said second plunger, and having a width smaller than a gap created between said second plunger and a barrel of said second standard-size syringe; and

proximally displacing said second plunger to aspire fluid from said second standard-size syringe.

10. A method of using a device for enabling single-hand operation of standard-size syringes for synchronized injection and aspiration, comprising:

inserting a first standard-size syringe and a second standard-size syringe into syringe mounts of a hosing housing of said device, the housing having an actuator for supporting a distally disposed curve portion of a flexible connector and movement of said flexible connector while a first plunger in the first standard-size syringe is pressed to inject fluid from said first standard-size syringe and the second standard-size syringe automatically and simultaneously aspirates fluid;

positioning a first rod adjacent to a first plunger of said first standard-size syringe, so said first rod is held by a head of said first plunger at a proximal end and by a seal of said first plunger at a distal end;

positioning a second rod adjacent to a second plunger of said second standard-size syringe, so said second rod is held by a head of said second plunger at a proximal end and by a seal of said second plunger at a distal end;

wherein the flexible connector is mechanically attached to a distal end of said first rod at a first end and to a distal end of said second rod at a second end; and

pushing said first plunger to inject fluid from said first standard-size syringe, while aspirating fluid from said second standard-size syringe.