Title:
ROTATING LOCK RESET SYSTEM AND METHOD
Kind Code:
A1


Abstract:
A system and method for resetting a locking mechanism of a medicament delivery or training device is provided herein. The system and method include a central shaft comprising a slotted ring, a pronged ring, a spring, a spring clamp, an actuator button, and a lock ring. Following the firing of the medicament device, wherein the actuation member has been activated and the lock ring in the unlocked position, the system and method can be initiated to reset the locking mechanism such that the components of the system and the lock ring are reset to the locked position before the actuation member can be actuated for a subsequent injection or training.



Inventors:
Baker, Jeff (Orlando, FL, US)
Van Der, Pol Paul (Winter Garden, FL, US)
Shuang, Hou Shi (NingBo, CN)
Application Number:
14/215734
Publication Date:
09/25/2014
Filing Date:
03/17/2014
Assignee:
BAKER JEFF
VAN DER POL PAUL
SHUANG HOU SHI
Primary Class:
Other Classes:
434/262, 604/228
International Classes:
A61M5/315; G09B23/28
View Patent Images:



Primary Examiner:
EISENBERG, REBECCA E
Attorney, Agent or Firm:
WOLTER VAN DYKE DAVIS, PLLC (ORLANDO, FL, US)
Claims:
What is claimed is:

1. A system for resetting a medicament device locking mechanism from an unlocked position to a locked position, said system comprising: a medicament device housing comprising a central shaft, said central shaft comprising at least a first hook at a first end thereof; a central shaft ring slidably engaged with the central shaft and movable along a longitudinal axis of the central shaft; a slotted ring slidably engaged with the central shaft and associated with the central shaft ring, said slotted ring comprising at least one guiding channel along its inner surface, said at least one guiding channel formed between at least two raised portions on an inner surface of the slotted ring; a pronged ring slidably engaged with the central shaft and movable along the longitudinal axis of the central shaft, said pronged ring comprising at least one prong, said at least one prong slidably engaged within a guiding channel of the slotted ring, said pronged ring comprising one or more openings, one or more ridge portions adjacent to said one or more openings, and one or more notches around its circumference; a spring associated with the pronged ring at a first end of the spring, said spring associated with a spring clamp at a second end of the spring, wherein said spring is arranged to exert a torque upon the pronged ring; and a lock ring surrounding at least a portion of the first end of the housing, said lock ring comprising one or more spines projecting inwardly, said one or more spines configured to interface with the one or more notches of the pronged ring, the lock ring comprising a locked position and an unlocked position; wherein upon actuation of the system, the central shaft ring is moved in a longitudinal direction toward the first end of the central shaft, forcing the slotted ring toward the first end of the central shaft such that at least one of the raised portions of the slotted ring depresses the first hook of the central shaft, and the pronged ring is disengaged from the slotted ring such that the first hook engages the ridge portion of the pronged ring; wherein a torsional force from the spring rotates the pronged ring axially relative to the central shaft, rotating the lock ring from the unlocked position to the locked position and rotating the pronged ring such that at least the first hook aligns with an opening of the pronged ring, wherein compression force from the spring forces the at least one prong of the pronged ring to re-engage with the guide channel of the slotted ring to complete the reset of the system from the unlocked position to the locked position.

2. The system of claim 1 further comprising an actuation member associated with the first end of the central shaft, and configured to activate the medicament device upon actuation, wherein said actuation member is actuated by pressing down on the actuation member such that it moves in a longitudinal direction relative to the central shaft toward the second end of the device.

3. The system of claim 2, wherein when the lock ring is in the locked position, the actuation member cannot move in a longitudinal direction relative to the central shaft toward the second end of the device.

4. The system of claim 2, wherein when the lock ring is in the unlocked position, the actuation member is movable in a longitudinal direction relative to the central shaft toward the second end of the device.

5. The system of claim 1, wherein the medicament device is a training device for an auto-injector.

6. The system of claim 1, wherein the medicament device is an auto-injector.

7. The system of claim 1, further comprising at least a second hook disposed on the central shaft, wherein the second hook interacts with the spring clamp to prevent the spring clamp from moving along the longitudinal axis of the central shaft toward the first end of the central shaft and/or from rotating relative to the central shaft.

8. The system of claim 2, wherein the actuation member is reset to a pre-actuated position upon resetting of the locking mechanism.

9. The system of claim 1, wherein the slotted ring further comprises two or more guiding channels along its inner surface.

10. The system of claim 9, wherein the two or more guiding channels are disposed at 45 degree increments on the inner surface of the slotted ring.

11. The system of claim 1, wherein prior to reset of the system, the lock ring is rotatable from the lock position to the unlock position such that the actuation member can be activated.

12. The system of claim 1, further comprising a resetting member, wherein the resetting member comprises a base and an elongated portion, wherein the elongated portion is configured to associate with a second end of the medicament device to initiate movement of the central shaft ring to actuate the system and initiate the resetting of the device.

13. A method for resetting a medicament device locking mechanism from an unlocked position to a locked position comprising a resetting system, the system comprising (a) a medicament device housing comprising a central shaft having at least a first hook at a first end thereof, (b) a central shaft ring slidably engaged with the central shaft and movable along a longitudinal axis of the central shaft, (c) a slotted ring, said slotted ring being slidably engaged with the central shaft and associated with the central shaft ring, said slotted ring comprising at least one guiding channel along its inner surface, said at least one guiding channel being formed between at least two raised portions on an inner surface of the slotted ring, (d) a pronged ring slidably engaged with and rotatable about the central shaft and movable along the longitudinal axis of the central shaft, said pronged ring comprising at least one prong, said at least one prong slidably engaged within a guiding channel of the slotted ring, said pronged ring comprising one or more openings, one or more ridge portions adjacent to said one or more openings, and one or more notches around its outer circumference, (e) a spring associated with the pronged ring at a first end of the spring, said spring associated with a spring clamp at a second end of the spring, wherein said spring is arranged to exert a torque upon the pronged ring, (f) a lock ring surrounding at least a portion of the first end of the housing, said lock ring comprising one or more spines projecting inwardly, said one or more spines configured to interface with the one or more notches of the pronged ring, the lock ring comprising a locked position and an unlocked position, (g) an actuation member configured to activate the medicament device upon actuation, wherein said actuation member can be actuated when the lock ring is in the locked position; and (h) a resetting member, the resetting member comprising a base and an elongated portion, wherein the elongated portion is configured to associate with a second end of the medicament device to initiate movement of the central shaft ring to actuate the system and initiate the resetting of the device; wherein the method comprises inserting the elongated portion of the resetting member into the second end of the medicament device, such that the locking mechanism is reset, the lock ring is rotated to the locked position, and the actuation member is active and movable relative to the central shaft to initiate the medicament device.

14. The method of claim 13 wherein the lock ring is rotated 45 degrees from the unlocked position to the locked position.

15. The method of claim 13 wherein rotating the lock ring from the locked position to the unlocked position applies a torsional force to load the spring.

16. The method of claim 15, wherein the resetting member releases the pronged ring from the slotted ring and unloads the torsional force of the spring, rotating the pronged ring about the central shaft.

17. The method of claim 16, wherein movement of the pronged ring toward the first end of the central shaft loads the compression force of the spring.

18. The method of claim 17, wherein after the pronged ring is rotated about the central shaft such that the first hook of the central shaft is disposed in the pronged ring opening, the compression force of the spring causes the pronged ring to move toward the slotted ring to complete the reset.

19. A system for resetting a medicament device locking mechanism from an unlocked position to a locked position, said system comprising: a medicament device housing comprising a first end and a second end; an actuation member disposed at the first end of the device; a lock ring disposed at the first end of the device; and a resetting member, wherein inserting the resetting member into the second end of the device resets the actuation member and rotates the lock ring from the unlocked position to the locked position.

20. The system of claim 19 further comprising a torsion spring, wherein rotation of the lock ring from the unlocked position to the locked position loads the torsion spring.

Description:

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority to and incorporates by reference the contents of Provisional Application No. 61/788,033 filed on Mar. 15, 2013.

BACKGROUND

Auto-injection or “pen” devices have recently become increasingly popular for single dose or multi dose, at home self-administration. These auto-injection devices are primarily designed to accomplish two basic objectives: convenience and automation of drug delivery in an outpatient setting. These are typically mechanically spring-loaded devices that advance a plunger or rubber stopper to transfer medication via hollow-bore needle to a patient's tissues. Auto-injection devices lack the ability to regulate whether the medication is actually delivered to the patient or whether it is delivered to a correct location. Most auto-injection devices fail to integrate advanced digital capabilities.

Injectable medications are required for a number of varying illnesses and diseases. A number of injectable medications require self-injection by a patient. Self-injection of a medicament using a device having a needle carries with it a certain stigma. Oftentimes patients are weary of injecting themselves for fear or anxiety related to failing to receive a complete dose of the medication, pain associated with injecting oneself with the needle, accidentally sticking oneself with the needle, and difficulties in adequately grasping the dosing mechanism to inject oneself, among other concerns. Auto-injection devices are routinely used to provide a means for self-injecting certain medications. The size and operation of these auto-injection devices can often be daunting to a patient, whether they are injecting themselves for the first or they have injected themselves before. These fears and anxieties associated with the currently available self-injection devices, particularly the auto-injection devices, may result in the administration of an incomplete dose of a medicament, failure to administer any portion of the dose of a medicament, or accidentally sticking oneself with the needle of the device, which in some instances could lead to unwanted transmission of diseases if the needle is contaminated.

In some instances, after an auto-injection is complete, the contaminated needle is retracted within the auto-injection device or covered over by a needle guard or sheath and the entire auto-injection device is disposed of. Therefore, most auto-injectors currently available are single use auto-injectors. These single use auto-injectors are costly and economically wasteful. Alternatively, there are injection devices which require a user to re-cap a needle after the injection is complete such that the disposable needle can be removed and discarded. These injection devices carry with them the risk of unwanted sticking of oneself during re-capping of the needle.

An additional concern exists with regard to injection devices, and in particular with regard to auto-injectors, where users with little or no medical knowledge or experience are injecting themselves or injecting others using these devices. Performing a medical treatment or test on oneself or others carries with it certain risks and often creates a level of anxiety for the user performing the treatment or test. It has proven beneficial in the medical field to practice various medical techniques including drug delivery, specifically where it relates to injections and other invasive drug delivery means prior to delivering the medications to a patient in need, and particularly in the case of self-administration of medicaments. Training devices are helpful in reducing anxiety associated with self administering medical treatment, as well as increasing efficiency and accuracy in providing the treatment to patients. Medical devices can be intimidating to use; the fear associated with giving oneself an injection, for example, can be traumatic. This fear is increased in persons with little or no experience in self-administration of medications. Consequently, devices to assist in training individuals to inject themselves or otherwise self-administer medication are beneficial in decreasing or preventing the anxiety associated with medicament delivery.

Safe use and re-use of these devices requires resetting of the mechanism or housing that provides the movement of the device to initiate an injection and the portion of the device that protects users from sticking themselves.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1A provides a side view of an embodiment a locking reset system including the resetting member.

FIG. 1B provides an exploded view of the components of the embodiment of the locking mechanism reset system shown in FIG. 1A.

FIG. 2 provides a side view of the system showing the first end of the central shaft and various components of the system associated with the central shaft.

FIG. 3 provides a side view of the system showing the first end of the central shaft and various components of the system associated with the central shaft with the lock ring, spring, and pronged ring removed.

FIG. 4 provides a side view of the system showing the first end of the central shaft and various components of the system associated with the central shaft with the lock ring and spring removed and the pronged ring detached from the slotted ring.

FIG. 5 provides a side view of the system showing the first end of the central shaft and various components of the system associated with the central shaft with the lock ring removed.

FIG. 6 provides a perspective view of the pronged ring.

FIG. 7 provides a cross sectional view of a portion of the system, illustrating a lock ring in a locked position.

FIG. 8 provides a cross sectional view of a portion of the system, illustrating the lock ring in an unlocked position.

FIG. 9 provides a partial side view of a first end of the central shaft of the system.

FIG. 10 provides a side view of a first end of the central shaft of the system.

FIG. 11A provides a side view of an embodiment of the system at the end of the reset.

FIG. 11B provides a close up of a side view of a portion of an embodiment of the system showing the interaction between the first hook and the pronged ring at the end of the reset.

DETAILED DESCRIPTION

For the purposes of promoting an understanding of the principles and operation of the invention, reference will now be made to the embodiments illustrated in the drawings and specific language will be used to describe the same. It will nevertheless be understood that no limitation of the scope of the invention is thereby intended, such alterations and further modifications in the illustrated device, and such further applications of the principles of the invention as illustrated therein being contemplated as would normally occur to those skilled in the art to which the invention pertains.

The inventors have discovered several areas in which the prior art could be improved. Prior art medicament delivery and training devices have been found by the inventors to lack certain safety and convenient features. While some medicament devices may include locking mechanisms, the inventors have identified a need for a resetting mechanism or system for a locking mechanism for a medicament delivery or training device. Locking mechanisms for these devices provide various safety benefits, such as, preventing a needle from ejecting from the injection housing before or after an injection so as to prevent unwanted sticks of a user. The inventors have discovered a novel resetting system and method for resetting a medicament delivery or training device locking mechanism from an unlocked position back to a locked position, in one embodiment, for subsequent uses of the device. Therefore, for safety purposes, injection devices may have a lock, where the user has to unlock the device prior to use. Resetting the lock on a re-usable trainer from an unlocked to a locked position is especially challenging. This invention discloses a method and system to reset a rotating lock from an unlocked to a locked position.

In some embodiments, a user must unlock a locking mechanism prior to actuating the medicament device. In one embodiment, once a user has unlocked the locking mechanism, the actuation member is in an activatable state (i.e., in a position to be activated—unlocked) and can be depressed, in an embodiment, to activate the delivery or training device. Following activation of the delivery or training device, the actuation member is no longer in an activatable or unlocked state, and the locking mechanism must be reset to a locked position before the device can be used again. Therefore, in one embodiment, a system for resetting a medicament device locking mechanism from an unlocked position to a locked position is provided. The system includes a medicament device housing having a central shaft, the central shaft having at least a first hook at a first end thereof. A central shaft ring is slidably engaged with the central shaft and movable along a longitudinal axis of the central shaft, and a slotted ring slidably engaged with the central shaft and associated with the central shaft ring, the slotted ring having at least one guiding channel along its inner surface, the at least one guiding channel formed between at least two raised portions on an inner surface of the slotted ring, in an embodiment. In a further embodiment, the slotted ring has two or more guiding channels along its inner surface. In still a further embodiment, the two or more guiding channels are disposed at 45 degree increments on the inner surface of the slotted ring.

The system further includes a pronged ring slidably engaged with the central shaft and movable along the longitudinal axis of the central shaft, the pronged ring having at least one prong, the at least one prong being slidably engaged within a guiding channel of the slotted ring, wherein the pronged ring has one or more openings, one or more ridge portions adjacent to the one or more openings, and one or more notches around its circumference, in an embodiment. The system further includes a spring associated with the pronged ring at a first end of the spring, the spring associated with a spring clamp at a second end of the spring, wherein the spring is arranged to exert a torque upon the pronged ring, and a lock ring surrounding at least a portion of the first end of the housing, the lock ring having one or more spines projecting inwardly, the one or more spines configured to interface with the one or more notches of the pronged ring, wherein the lock ring has a locked position and an unlocked position, in an embodiment. Prior to reset of the resetting system and prior to actuation of the actuation member for use of the medicament device, the lock ring is rotatable from the lock position to the unlock position such that the actuation member can be activated. Once the actuation member has been actuated, it cannot be actuated again until the system is reset from the unlocked position to the locked position, in an embodiment.

Upon actuation of the resetting system, the central shaft ring is moved in a longitudinal direction toward the first end of the central shaft, in an embodiment, forcing the slotted ring toward the first end of the central shaft such that at least one of the raised portions of the slotted ring depresses the first hook of the central shaft, and the pronged ring is disengaged from the slotted ring such that the first hook engages the ridge portion of the pronged ring. A torsional force from the spring rotates the pronged ring axially relative to the central shaft, rotating the lock ring from the unlocked position to the locked position and rotating the pronged ring such that at least the first hook aligns with an opening of the pronged ring, in an embodiment. A compression force from the spring forces the at least one prong of the pronged ring to re-engage with the guide channel of the slotted ring to complete the reset of the system from the unlocked position to the locked position, in an embodiment of the system.

In a further embodiment, the system is provided wherein an actuation member is associated with the first end of the central shaft, and configured to activate the medicament device upon actuation, wherein the actuation member is actuated by pressing down on the actuation member, in one particular embodiment, such that it moves in a longitudinal direction relative to the central shaft toward the second end of the device. Other types of actuation members and modes of activation of actuation members are contemplated herein, including but not limited to switches, toggles, digitally selected buttons, manual buttons, touch sensors and the like.

In still a further embodiment, the system is provided wherein when the lock ring is in the locked position, the actuation member cannot be activated. In one particular embodiment, the actuation member cannot be moved in a longitudinal direction relative to the central shaft toward the second end of the device when the lock ring is in the locked position.

In yet a further embodiment, the system is provided wherein when the lock ring is in the unlocked position prior to actuation of the device, the actuation member can be activated. In one particular embodiment, when the lock ring is in the unlocked position before the device has been activated, the actuation member is movable in a longitudinal direction relative to the central shaft toward the second end of the device, for example.

In one embodiment, the medicament device is a training device for an auto-injector. However in other embodiments, the medicament device is an auto-injector. In further embodiments, the medicament device may have both training and injection capabilities, and thus may be a hybrid device of a trainer and an auto-injector.

The system is further provided, in an embodiment, wherein at least a second hook is disposed on the central shaft. The second hook interacts with the spring clamp to prevent the spring clamp from moving along the longitudinal axis of the central shaft, toward the first end of the central shaft for example, and/or prevent the spring clamp from rotating relative to the central shaft.

In still a further embodiment, the actuation member is reset to a pre-actuated position upon resetting of the locking mechanism. The pre-actuated position allows the actuation member to be re-activated. Following a use of a device, the actuation member is inactive until the system is re-set from an unlocked to a locked position.

In a further embodiment, a resetting member is provided to interact with the device and initiate the resetting of the locking mechanism, for example. The resetting member may include a base and an elongated portion, wherein the elongated portion is configured to associate with a second end of the medicament device to initiate movement of the central shaft ring to actuate the system and initiate the resetting of the device, in an embodiment.

In a further embodiment, a method is provided for resetting a medicament device locking mechanism from an unlocked position to a locked position. The method includes a resetting system. The system includes a medicament device housing having a central shaft, wherein a first hook is disposed at a first end of the shaft. A central shaft ring is slidably engaged with the central shaft and movable along a longitudinal axis of the central shaft, and a slotted ring is slidably engaged with the central shaft and is associated with the central shaft ring. The slotted ring has at least one guiding channel along its inner surface, and the at least one guiding channel is formed between at least two raised portions on an inner surface of the slotted ring, (d) a pronged ring slidably engaged with the central shaft and movable along the longitudinal axis of the central shaft, the pronged ring having at least one prong, the at least one prong is slidably engaged within a guiding channel of the slotted ring, wherein the pronged ring has one or more openings, one or more ridge portions adjacent to the one or more openings, and one or more notches around its outer circumference. A spring is associated with the pronged ring at a first end of the spring, the spring being associated with a spring clamp at a second end of the spring, wherein the spring is arranged to exert a torque upon the pronged ring. The spring clamp keeps the second end of the spring in place, in one embodiment. A lock ring surrounds at least a portion of the first end of the housing, in one embodiment, the lock ring having one or more spines projecting inwardly, the one or more spines configured to interface with the one or more notches of the pronged ring. The lock ring includes a locked position and an unlocked position.

In some embodiments the words LOCKED and UNLOCKED or symbols or colors to indicate the same may appear on an outer portion of the lock ring or of the device to indicate to a user whether the system is in a locked or unlocked position. The system further includes an actuation member configured to activate the medicament device upon actuation, wherein when the actuation member is actuated, in an embodiment, it is moved in a longitudinal direction relative to the central shaft toward the second end of the device, for example. As already discussed herein, the actuation member may be actuated in any number of ways, and may be embodied as, but is not limited to, a toggle, a button, a switch, a sensor, a digital button or any other type of actuation member known to those of skill in the art.

The method further includes rotating the lock ring from the locked position to the unlocked position to apply a torsional force to load the spring prior to use of the medicament device. The method further includes wherein the resetting member releases the pronged ring from the slotted ring and unloads the torsional force of the spring, rotating the pronged ring about the central shaft. In yet a further embodiment, movement of the pronged ring toward the first end of the central shaft loads the compression force of the spring.

In still a further embodiment of the method, wherein after the pronged ring is rotated about the central shaft such that the first hook of the central shaft is disposed in the pronged ring opening, the compression force of the spring causes the pronged ring to move toward the slotted ring to complete the reset.

In one embodiment, the actuation member can be actuated by depressing the actuation member (like a button in one embodiment), moving it in a longitudinal direction relative to the central shaft toward the second end of the device. When the lock ring is in a locked position, the actuation member is inactive (i.e., cannot be actuated), in an embodiment. The system further includes a resetting member. The resetting member includes a base and an elongated portion, wherein the elongated portion is configured to associate with a second end of the medicament device to initiate movement of the central shaft ring to actuate the system and initiate the resetting of the device. The method further comprises inserting the elongated portion of the resetting member into the second end of the medicament device, such that the locking mechanism is reset, the actuation member is reset and the lock ring is rotated to the locked position. Once the lock ring has reached the locked position, the user can rotate the lock ring to the unlocked position, and the actuation member is active (i.e., can be actuated) and movable relative to the central shaft, in one embodiment, to initiate the medicament device. In one particular embodiment, the lock ring is rotated 45 degrees from the unlocked position to the locked position (i.e., the same distance as the distance between each raised portion on the inner surface of the slotted ring and the distance between the prongs of the pronged ring, in an embodiment). Following reset of the locking mechanism, the medicament delivery or training device is ready to be used in a subsequent injection or training. Therefore in one embodiment, to start the next training or injection, the lock ring is moved by the user from the locked position to the unlocked position.

In another embodiment, a system for resetting a medicament device locking mechanism from an unlocked position to a locked position is provided. The system includes a medicament device housing comprising a first end and a second end, an actuation member disposed at the first end of the device a lock ring disposed at the first end of the device, and a resetting element, wherein inserting the resetting element into the second end of the device resets the actuation member and rotates the lock ring from the unlocked position to the locked position.

Turning to the drawings, FIG. 1A provides a side view of an embodiment of the locking reset system 100 including the actuation member 6 at a first end of the medicament device, a spring clamp 5, a spring 4, a pronged ring 3, a slotted ring 2, and a central shaft ring 1a disposed along a central shaft 1. Lock ring 7 is shown in dashed line, as lock ring 7 surrounds a portion of the first end of the device. FIG. 1A further illustrates the resetting member 25 for insertion within a second end of the medicament device to initiate reset of the locking reset system 100. Insertion of the elongated portion of the resetting member 25 into the second end of the medicament device produces a force which initiates the resetting of the locking reset system 100 such that a central shaft ring 1a moves slotted ring 2 toward the first end of the medicament device, which moves the pronged ring 3, initiating a series of events of the resetting system 100 that follow, as described in greater detail in reference to FIG. 9.

FIG. 1B provides an exploded view of various components of the system 100 shown in FIG. 1A for resetting the medicament device locking mechanism. A central shaft 1 with a central shaft ring 1a, a first hook 11a, a second hook 11b, and a third hook 11c disposed thereon. A slotted ring 2 is shown, including eight guiding channels 21 (only three of which are shown) and raised portions 22 disposed there between, wherein the guiding channels 21 are spaced apart by 45° on an inner portion of the slotted ring. A pronged ring 3 is shown including prongs 3a. A spring 4, which combines torsion and compression force is provided, has a first end 4a and a second end 4b. A spring clamp 5 configured to attach to the second end 4b of the spring 4 to prevent movement of the second end 4b of the spring 4 is also illustrated. An embodiment of an actuation member 6 is shown, wherein the actuation member 6 which can slide in a longitudinal direction relative to the central shaft 1, and wherein the actuation member 6 is configured to attach onto the system 100. Actuation of the actuation member 6 is prevented if lock ring 7 (shown in FIGS. 7 and 8 only) is in a locked position, in an embodiment as will be shown below. Lock ring 7 rotates in conjunction with spring clamp 5. As will be seen in the Figures below, lock ring includes at least one spine 71, which interacts with at least one notch 32A on the pronged ring 3 (shown in FIG. 7).

FIG. 2 provides a perspective view of an end portion of the device with all components of the system 100, except for the lock ring 7, assembled. The first end 4a of the spring 4 is attached to the pronged ring 3, and the second end 4b of the spring 4 is held in place by the spring clamp 5. Spring clamp members 5a, 5b, are disposed on either side of the second hook 11a of the central shaft 1 and keep spring clamp 5 in place on the central shaft 1.

FIG. 3 provides a partial perspective view of the first end of the medicament device providing a view of the central shaft ring 1a and the slotted ring 2 surrounding a portion of the central shaft 1. The slotted ring 2 can rotate relative to central shaft 1 in an embodiment. In FIG. 3, the spring 4, spring clamp 5, and actuation member 6 are not shown. Shown on central shaft 1 are first, second and third hooks 11a, 11b and 11c. FIG. 4 provides a perspective view of the system 100 as shown in FIG. 3, however, the pronged ring 3 having prongs 31 and notches 32 is shown as surrounding the central shaft 1, wherein the pronged ring 3 is prevented from moving in a longitudinal direction relative to the central shaft 1 toward the slotted ring 2 by the first hook 11a which is in contact with ridge 34 of pronged ring 3 (as shown in FIG. 6). The prong 31 on pronged ring 3 slides into the guiding channels 21 of slotted ring 2. Pronged ring 3 can be disengaged from slotted ring 2 by sliding in a longitudinal direction toward the first end of the central shaft 1. This movement can be initiated with the resetting member. Then pronged ring 2 can rotate 45° in one specific, non-limiting embodiment, (the degrees of rotation may vary in different embodiments of the invention, this 45° number is used as an example herein), and be re-engaged by sliding its prong 31 into the guiding channels 21 of slotted ring 2. Once pronged ring 3 is engaged with slotted ring 2, it cannot rotate under the torsion force of spring 4.

FIG. 5 provides a partial perspective view of the first end of the device of the system 100. As spring 4 is held in place by spring clamp 5, pronged ring 3 is subject to torsion and compression force, forcing a prong 31 of pronged ring 3 to slide into guiding channel 21 of the slotted ring 2. FIG. 6 provides a perspective view of pronged ring 3, which has two holes or openings 33 and two notches 32 in a non-limiting embodiment.

FIG. 7 provides a cross-sectional perspective view of lock ring 7 in the locked position. Two spines 71 on lock ring 7 interact with the two complementary notches 32 on pronged ring 3 in the non-limiting, exemplary embodiment of the system 100 shown in FIG. 7, preventing axial rotation of pronged ring 3 relative to lock ring 7 when they are joined to one another as shown.

In FIG. 8, a perspective view of the first end of the device showing the system 100 showing the unlocking movement. Use of the medicament device requires the rotation of lock ring 7 from the locked position to the unlocked position by the user, this loads the torsion spring 4. The actuation member 6 can then be actuated in order to use the medicament device. Once the device has been used (i.e., an injection has been completed, in one embodiment), the lock ring 7 remains in the unlocked position. Prior to using the device for a subsequent injection event, the lock ring 7 must be reset to the locked position and the actuation member must be reset. In order to begin the reset of the lock ring 7, the resetting member 25 is inserted into the second end of the medicament device which effects the movement of the central shaft ring 1a, the slotted ring 2 and the pronged ring 3 as described below in order to reset the lock ring 7 from unlocked position back to a locked position and to reset the actuation member 6 so that it can be re-actuated for a subsequent injection. Then, as spine 71 is engaged in notch 32, lock ring 7 turns pronged ring 3 counterclockwise 45-degrees (in a non-limiting example). As pronged ring 3 is engaged with slotted ring 2, the slotted ring 2 also rotates counterclockwise 45-degrees in the non-limiting embodiment shown. Since guiding channels 21 are distributed every 45-degrees between central shaft 1 and the slotted ring 2 in the embodiment provided, it turns slotted ring 2 after 45-degree counterclockwise rotation in one embodiment. As pronged ring 3 cannot reset itself under torsion force of spring 4, the whole mechanism stays unlocked. Rotating lock ring 7 from the locked position to the unlocked position rotates slotted ring 2 and pronged ring 3 relative to central shaft 1 while loading the torsion spring 4.

FIG. 9 provides a perspective view of the first end of the device demonstrating the first step of the reset. Pronged ring 3 is pushed toward the first end of the central shaft 1 (and separated from the slotted ring 2) by inserting the resetting member 25 which forces the central shaft ring 1a toward the first end of the device, moving the slotted ring 2 and pronged ring 3 toward the first end. The movement forces pronged ring 3 to detach from the slotted ring 2 and move toward the first end of the central shaft 1 by moving the central shaft ring 1a toward the first end of the central shaft 1. In one particular embodiment, movement of the central shaft ring 1a toward the first end forces the slotted ring 2 with raised portions 22 on the inner portion thereof toward the first end over the first hook 11a, wherein at least one of the raised portions 22 of the slotted ring 2 compresses the first hook 11a. Slotted ring 2 and pronged ring 3 disengage from one another as pronged ring 3 moves along the longitudinal axis of the central shaft 1 toward the first end of the central shaft 1 until first hook 11a comes through an opening in pronged ring 32 and abuts ridge 34 preventing pronged ring 3 from moving back toward slotted ring 2.

After the first reset step is complete, slotted ring 2 and pronged ring 3 stay disengaged as shown in FIG. 9 because the first hook 11a on the central shaft 1 prevents pronged ring 3 from moving back toward slotted ring 2, as described. Pronged ring 3 then rotates clockwise. The rotation of pronged ring 2 is 45-degrees in one embodiment, under the torsional force of spring 4, such that first hook 11a is disposed within opening 33a in pronged ring 3, and the lock ring 7 is reset (i.e. rotated) from the unlocked position to the locked position (shown in FIG. 7). This rotation of the locked ring 7 is as a result of the interaction between the spine(s) 71 of lock ring 7 and the notch(es) 32A and/or 32B of pronged ring 3, wherein the spine(s) 71 fit within the complementary notch(es) 32A, 32B of the pronged ring 3, such that the pronged ring 3 and the lock ring 7 rotate together about the central shaft 1.

FIGS. 11A and 11B provide a side view of the system and a close up view of the side view of the system showing the pronged ring 3 during a third step of the reset. After the second reset step is complete, pronged ring 3 and lock ring 7 (not shown) complete the reset process. After pronged ring 3 rotates clockwise under the torsion force of spring 4, and once the first hook 11a of the central shaft 1 aligns with the hole or opening 33 on pronged ring 3, the compression force of spring 4 moves pronged ring 3 back toward slotted ring 2 where prong(s) 31 re-engage with slotted ring guide channel(s) 21 in order to complete the reset of the locking mechanism. Consequently, the system resets the actuation member 6 and resets the lock ring 7 from the unlocked position to the locked position such that the device can be use for a subsequent injection or training event.