Biomaterial dispensing device

1. A method for dispensing biomaterial into a patient, said method comprising:

providing biomaterial to a device configured to inject the biomaterial into a patient, the device including:

a handle configured to receive a syringe, the syringe comprising a biomaterial and a threaded plunger; and

an engagement pin retained within the handle and slidable between a first position and a second position, the engagement pin configured to engage the threaded plunger in the first position; the engagement pin further configured to disengage from the threaded plunger in the second position

a lid having a closed position and an open position, the lid configured to retain the syringe within the handle in the closed position, the lid further configured to release the syringe from the handle in the open position;

a hinge pin configured to connect the lid to the handle; and

at least one ball plunger configured to releasably hold the lid in the closed position.

2. The method of claim 1 , wherein the device further includes a hole in the handle, the hole configured to hold the engagement pin, the hole located so as to permit a user of the device to ergonomically slide the engagement pin between the first position and the second position.

3. The method of claim 1 , wherein the device further includes:

a locking pin configured to retain the engagement pin within the hole; and

at least one ball plunger configured to releasably hold the engagement pin in at least one of the first position and the second position.

4. The method of claim 1 , further comprising:

placing the engagement pin in the second position;

placing the syringe into the handle;

sliding the engagement pin to the first position to engage the threaded plunger;

dispensing biomaterial; and

relieving injection pressure in the syringe by sliding the engagement pin to the second position.

5. A method for dispensing biomaterial into a patient, said method comprising:

providing biomaterial to a device configured to inject the biomaterial into a patient, the device including:

a handle configured to receive a syringe, the syringe comprising a biomaterial and a threaded plunger;

an engagement mechanism contained within the handle and having a first position and a second position, the engagement mechanism configured to engage the threaded plunger in the first position; the engagement mechanism further configured to disengage from the threaded plunger in the second position;

a locking mechanism configured to releasably lock the engagement mechanism in the first position; and

a release button configured to disengage the locking mechanism, thereby releasing the engagement mechanism from the first position, the release button located so as to permit a user of the device to ergonomically disengage the locking mechanism,

a lid having a closed position and an open position, the lid configured to retain the syringe within the handle in the closed position, the lid further configured to release the syringe from the handle in the open position;

a hinge pin configured to connect the lid to the handle; and

at least one ball plunger configured to releasably hold the lid in the closed position.

6. The method of claim 5 , wherein the locking mechanism comprises a clutch mechanism.

7. The method of claim 5 , the device further including an engagement mechanism spring configured to press the engagement mechanism toward the second position.

8. The method of claim 5 , wherein the locking mechanism comprises a locking pin.

9. The method of claim 8 , wherein the device further includes a locking pin spring configured to press the locking pin toward the engagement mechanism.

10. The method of claim 8 , wherein:

the engagement mechanism comprises a slot; and

the locking pin comprises a blade configured to engage the slot in the engagement mechanism when the engagement mechanism is in the first position.

11. The method of claim 1 , wherein the release button is configured to disengage the blade from the slot.

12. The method of claim 5 , further comprising:

placing the engagement mechanism in the second position;

placing the syringe into the handle;

moving the engagement mechanism to the first position;

locking the engagement mechanism in the first position with the locking mechanism;

dispensing biomaterial; and

relieving injection pressure in the syringe by operating the release button.