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1. WO2020113123 - SYRINGE ACCESSORY DEVICE AND METHODS OF USE

Note: Text based on automatic Optical Character Recognition processes. Please use the PDF version for legal matters

[ EN ]

PROVISIONAL CLAIMS

I CLAIM:

1. A unitary syringe accessory device configured to attach to a typical syringe, comprising:

A syringe plunger flange attachment means, and

a syringe barrel attachment means, and

a linkage connecting said barrel attachment means and said plunger flange attachment means,

wherein the syringe accessory provides a mechanical advantage when aspirating contents into the syringe during single-handed operation.

2. The plunger flange attachment means of claim 1 , comprising:

a top plate, and

a discontinuous bottom plate, and

at least one discontinuous side wall,

wherein said top plate, bottom plate, and side wall are integral and substantially contiguous,

such that said plunger flange attachment comprises a pocketed receiver for fitment to a syringe plunger flange.

3. The top plate of claim 2 comprising a substantially discontinuous ring-like element, wherein the top plate is at least partially open such that thumb or finger force may be applied to the top surface of the plunger flange to induce motion of the plunger into the syringe barrel and thereby eject contents out of the syringe.

4. The top plate of claim 2, comprising a substantially continuous planar element, whereupon thumb or finger force may be applied to the top surface of the top plate to induce motion of the plunger into the syringe barrel and thereby eject contents out of the syringe.

5. The top plate of claim 2, comprising a protruding element positioned substantially on the front periphery of the substantially continuous planar element, whereupon force may be applied to assist removal of the plunger flange attachment means from the syringe plunger.

6. The substantially continuous planar element of claim 3, comprising reliefs to allow lateral expansion, whereby plunger flanges in a range of diameters may be inserted into and secured by the plunger flange attachment means.

7. The reliefs of claim 6, being substantially continuous and through the thickness of the top plate, wherein the upper plate element is fully transected by said reliefs.

8. The reliefs of claim 6, being substantially discontinuous and through the thickness of the top plate, wherein the upper plate element is partially transected by said reliefs.

9. The at least one discontinuous side wall of claim 2, comprising reliefs through said at least one side wall, whereby syringe plunger flanges in a range of diameters may be inserted into and secured by the plunger flange attachment means.

10. The plunger flange attachment means of claim 1 , comprising a slotted receiver of an open sided substantially c-form cross-sectional shape, whereby said plunger flange attachment means may be snap-fitted to the flange element of a syringe plunger, and whereby force may be transmitted to the flange element in both axial directions.

11. The plunger flange attachment means of claim 1 , comprising an open-sided receiver,

wherein the opening of said receiver has a maximum open-side gap width smaller than the outside diameter of the syringe plunger flange.

12. The syringe barrel attachment means of claim 1 , comprising an open-sided sleeve structure, whereby said sleeve structure can be snap-fitted to the cylindrical outside surface of a syringe barrel using a substantially lateral to medial motion.

13. The open-sided sleeve structure of claim 12, comprising at least one laterally-extending force application structure, whereupon finger force may be applied in substantially normal direction to a surface thereof, whereby movement of the syringe plunger outward from the syringe barrel to induce the aspiration of contents into the syringe may be actuated.

14. The force application structure of claim 13, including but not limited to the class of flanges, wings, ribs, gussets, bars, pins, or other protrusions.

15. The open-sided sleeve structure of claim 12, comprising stand-off structures on the inside surface of said open-sided sleeve structure, wherein contact area between the sleeve structure and the syringe barrel is reduced.

16. The open-sided sleeve structure of claim 12, comprising at least one relief extending upward from the bottom edge of said open-sided sleeve structure and through the thickness of the sleeve, whereby said open side of the sleeve may be more easily expanded during engagement to and removal from a syringe barrel.

17. The open-sided sleeve structure of claim 12, comprising at least one channel through the sleeve structure, wherein at least one telescoping mold element projects through said channel to form undercut surfaces on the inside surface of the sleeve, and whereby need for side-action mold core elements to form said undercut surfaces is eliminated.

18. The at least one channel of claim 17, comprising an opening through the sleeve structure, wherein said opening is substantially contiguous and in communication with the bottom edge of the sleeve structure, and whereby visibility of the syringe piston is substantially unobstructed by the sleeve structure.

19. The open-sided sleeve structure of claim 12, comprising at least one additional laterally- extending force application structure, whereupon thumb force may be applied in one axial direction to actuate movement of the syringe plunger outward from the syringe barrel, or in the opposing direction to actuate movement of the syringe plunger inward into the syringe barrel, and thereby to induce aspiration or ejection of contents into or out of the syringe, respectively.

20. The linkage of claim 1 , comprising a substantially continuous linear structure.

21. The linear structure of claim 20, comprising two ends, wherein a first end is located on or proximal to the periphery of the barrel attachment means and a second end is located on or proximal to the periphery of the plunger flange attachment means.

22. The linear structure of claim 20, comprising a substantially rectangular cross-sectional shape.

23. The linear structure of claim 20, comprising a curved cross-sectional shape, wherein the curvature of the linkage is substantially similar to the curvature of the outside edge of the top collar of the syringe barrel.

24. The linear structure of claim 20, comprising at least one stiffening rib oriented length-wise on the outer surface of the linkage, wherein bending stiffness is increased.

25. The linear structure of claim 20, comprising at least one stiffening rib oriented length-wise on the inner surface of the linkage, wherein bending stiffness is increased.

26. The linear structure of claim 20, comprising at least one depression positioned between the outer and inner surfaces of said linear structure, wherein material usage and part weight are reduced.

27. The linear structure of claim 20, comprising at least one through-hole positioned between the outer and inner surfaces of the linkage, wherein material usage and part weight are reduced.

28. The linear structure of claim 20, comprising at least one laterally-extending force application structure, whereupon finger force may be applied in substantially normal direction to a surface thereof, whereby movement of the syringe plunger outward from the syringe barrel to induce the aspiration of contents into the syringe may be actuated.

29. The linear structure of claim 20 comprising at least one thumb engagement feature on the outer surface proximal to said first end of said linear structure, and whereupon thumb force may be applied in either axial direction when the syringe is grasped in a cradle-grip orientation to facilitate aspiration or ejection of syringe contents.

30. The linear structure of claim 20, comprising thumb traction features on the outer surface proximal to said first end of said linear structure, wherein thumb traction may be used in either axial direction when the syringe is grasped in a cradle-grip orientation to facilitate aspiration or ejection of syringe contents.

31. The linear structure of claim 20, comprising at least one tracking rib oriented length-wise on the inner surface of said linkage, wherein tracking on at least one associated detent in the syringe barrel collar is facilitated, and whereby angular orientation between the syringe and the syringe accessory device is maintained.

32. The unitary syringe accessory device of claim 1 , wherein the syringe barrel attachment means, the syringe plunger flange attachment means, and the linkage are comprised and oriented to allow snap-fitting said accessory device to a syringe using a substantially lateral- to-medial motion.

33. A method for utilizing a unitary syringe accessory device, consisting of:

Aligning the central axis of the accessory device to the central axis of syringe, and

approximating the accessory device to the syringe using a substantially lateral-to-medial motion, and

snap-fitting a syringe barrel attachment means of the accessory device to the syringe barrel, and

snap-fitting a plunger flange attachment means of the accessory device to the syringe plunger flange,

wherein the syringe comprises at least one barrel flange for application of manual force.

34. The method of claim 33, further consisting of:

Placing the user's index finger and middle finger each respectively on an inferior surface of at least one force application structure of said syringe barrel attachment means, and

placing the user's thumb on a superior surface of the at least one finger flange of the syringe, and

approximating the user's index and middle fingers toward the user's thumb,

whereby the syringe plunger is progressively retracted from the syringe barrel, and

whereby negative pressure within the syringe barrel is produced and contents may be aspirated into the syringe.

35. The method of claim 33, consisting of:

Orienting the syringe and attached accessory device in a substantially horizontal position with the accessory device superiorly positioned to the syringe, and

grasping the accessory device attached to the syringe in the user's hand using a cradle- grip, and

placing the user's thumb on at least one thumb-assist feature located on or proximal to the junction of the barrel attachment means and an integral linkage connecting the barrel attachment means to the plunger flange attachment means,

whereby contents may be aspirated into the syringe by approximating the tip of the thumb toward the base of the thumb, and

whereby contents may be ejected from the syringe by extending the tip of the thumb away from the base of the thumb.

36. A process for forming a unitary syringe accessory device having undercut structures,

consisting of:

Having telescoping components within the two halves of a straight-pull substantially two- sided mold, and

placing the straight-pull substantially two-sided mold into a mold press, and

molding the unitary syringe accessory device using a resin,

wherein the use of side-action components within the mold is unnecessary to form the undercut structures comprised within the syringe accessory device.

37. The resin of claim 36, comprising a thermoplastic polymer.

38. The resin of claim 36, comprising a thermosetting polymer.

39. The molding step of claim 35, comprising any variant of the classes of injection and compression molding.