# US 11,305,060 B2 · Actuator and device for synchronized injection and aspiration

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- Number: US 11,305,060 B2
- Document ID: US11305060B2
- Status: Granted
- Kind: B2
- Application number: 16/626,373
- Filed: 2018-06-25
- Published: 2020-04-30
- Granted: 2022-04-19
- Earliest claimed: 2017-06-26
- Assignees: V.V.T. Med Ltd.
- Applicants: V.V.T. Med Ltd.
- Inventors: Zeev Brandeis
- Web page: https://patentgrep.com/patent/US11305060B2

## CPC

- A61M 5/31511: {Piston or piston-rod constructions, e.g. connection of piston with piston-rod (A61M5/5066 takes precedence)}
- 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)}
- A61M 1/774: {Handpieces specially adapted for providing suction as well as irrigation, either simultaneously or independently}
- A61M 1/81: {Piston pumps, e.g. syringes}
- A61M 3/0279: {Cannula; Nozzles; Tips; their connection means}
- A61M 5/19: having more than one chamber
- A61M 5/3148: {Means for causing or aiding aspiration or plunger retraction}
- A61M 5/31581: {the component being manually operated or triggered by a rotating or pivoting actuator operated by user, e.g. an injection lever or handle}
- A61M 1/815: {the barrel serving as aspiration container, e.g. in a breast pump}
- A61M 5/14216: {Reciprocating piston type}
- A61M 5/14566: {with a replaceable reservoir for receiving a piston rod of the pump}
- A61M 5/3137: {with finger grip means, e.g. for easy manipulation of the syringe rod}
- A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)}

## 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

### Claim 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 has 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 standard-size syringe automatically and simultaneously aspirates fluid, enables single-hand operation.

### Claim 2 (depends on 1)

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.

### Claim 3 (depends on 1)

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

### Claim 4 (depends on 1)

The actuator of claim 1, further comprising:
a one-way mechanism which allows said flexible connector to move only in one direction.

### Claim 5 (depends on 1)

The actuator of claim 1, wherein said first rod and said second rod have a profile with a 90 degree corner to fit within an X-shaped profile of the first and second plungers.

### Claim 6 (depends on 1)

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.

### Claim 7

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 anchor 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, enables single-hand operation;
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 first 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;
proximally displacing a second end of said flexible connector which is mechanically attached to a distal end of a second rod;
proximally displacing the 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 aspirate fluid from said second standard-size syringe.

### Claim 8

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 housing of said device, the housing having an anchor 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, enables simile-hand operation;
positioning a first rod adjacent to the 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.