# US 8,540,681 B2 · Injection control device with gearing mechanism

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- Number: US 8,540,681 B2
- Document ID: US8540681B2
- Status: Granted
- Kind: B2
- Application number: 12/379,924
- Filed: 2009-03-04
- Published: 2009-10-08
- Granted: 2013-09-24
- Earliest claimed: 2008-04-02
- Assignees: BSECS Holdings, LLC
- Applicants: Hugh E. Hetherington
- Inventors: Hugh E. Hetherington
- Web page: https://patentgrep.com/patent/US8540681B2

## CPC

- A61M 5/31511: {Piston or piston-rod constructions, e.g. connection of piston with piston-rod (A61M5/5066 takes precedence)}
- A61M 5/20: Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically (A61M5/142 takes precedence)
- A61M 5/3158: {the component being manually operated or triggered by an axially moving actuator operated by user, e.g. an axially movable injection button}
- A61B 2017/00747: {Dermatology}
- A61B 2017/00792: {Plastic surgery}
- A61M 5/24: Ampoule syringes, i.e. syringes with needle for use in combination with replaceable ampoules or cartridges, e.g. automatic
- A61M 2005/3152: {including gearings to multiply or attenuate the piston displacing force}
- 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)}
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)

## Abstract

An injection control device having a metered/controlled injection rate, that is proportional to the rate of withdrawal/injection—suitable for cosmetic as well as other applications—is described. For an injection mode, after the cannula is advanced into an object, the cannula is withdrawn to create a tract or tunnel within the targeted area. As the cannula is withdrawn, filler material in the injection control device is uniformly deposited into the tract or tunnel via the automatic metering system. The automatic metering system incorporates a syringe activating mechanism coupled to a gearing system which is capable of proportioning the deposition (or sucking) rate to the retraction/injection rate of the cannula. Accordingly, more consistent and uniform distribution (or harvesting) of material can be achieved with less cannula passes as well as requiring less dependence on the skills of the practitioner of this device.

## Claims

### Claim 1

An injection control device (ICD), comprising:
an external body having a distal and proximal end;
a syringe supporting section coupled to the body;
a transmission system coupled to the body, the transmission system containing a main gear, and a worm gear in contact with the main gear;
a transmission system activating member housed within the external body, operably coupled and in contact with the main gear of the transmission system and linearly extendable from the distal end of the body beyond a distal end of the syringe supporting section; and
a plunging member coupled to the transmission system,
wherein the transmission system, activating member, and plunging member are configured so that a motion of the body of the ICD from a substantially fixed position of the activating member and the activating member's contact with the worm gear, causes the main gear to rotate, forcing a one-way motion of the plunging member to inject or aspirate material contained in the device, as the body of the ICD is moving, a rate of injection or aspiration being proportional to an amount of movement of the body of the ICD.

### Claim 2 (depends on 1)

The injection control device of claim 1, further comprising:
a syringe supported by the syringe supporting section; and
a cannula coupled to the syringe.

### Claim 3 (depends on 1)

The injection control device of claim 1, wherein the transmission system contains a clutch, the clutch enabling movement of the activating member without causing movement of the plunging member.

### Claim 4 (depends on 1)

The injection control device of claim 1, further comprising a brake to secure the activating member from movement.

### Claim 5 (depends on 1)

The injection control device of claim 1, wherein the body is configured into at least two pieces which can be released from each other and secured to each other via a securing mechanism.

### Claim 6 (depends on 1)

The injection control device of claim 1, wherein the transmission system is configured to move the plunging member in a same direction of movement as the body to provide the aspiration or injection.

### Claim 7 (depends on 1)

The injection control device of claim 1, wherein the transmission system is configured to move the plunging member in an opposite direction of movement as the body to provide the aspiration or injection.