Mechanical injection pump and method of use
First Claim
1. A mechanical injection pump wearable by a user to deliver a first fluid and a second fluid, the mechanical injection pump comprising:
- a pump body defining a first fluid chamber and a second fluid chamber, the first fluid chamber being operable to hold the first fluid and the second fluid chamber being operable to hold the second fluid;
a common connector having a first inlet, a second inlet, and a common outlet;
a first fluid system including the first fluid chamber, a first button drive operably connected to the first fluid chamber, a first fluid delivery path in fluid communication between the first fluid chamber and the first inlet, a first piston slideably disposed in the first fluid chamber, and a first axial shaft operably connected between the first button drive and the first piston, wherein the first axial shaft has external threads, and the first button drive comprises;
an axially fixed ratchet wheel having exterior teeth and internal threads, the internal threads being engaged with the first external threads of the first axial shaft; and
a ratchet assembly operable to engage the exterior teeth of the axially fixed ratchet wheel; and
a second fluid system including the second fluid chamber, a second button drive operably connected to the second fluid chamber, a second fluid delivery path in fluid communication between the second fluid chamber and the second inlet, a second piston slideably disposed in the second fluid chamber, and a second axial shaft operably connected between the second button drive and the second piston;
wherein force by the user on the first button drive causes the ratchet assembly to rotate the axially fixed ratchet wheel a predetermined angle to advance the first piston a first predetermined distance into the first fluid chamber to drive a predetermined volume of the first fluid from the first fluid chamber, through the first fluid delivery path to the common connector, and out the common outlet; and
force by the user on the second button drive advances the second piston a second predetermined distance into the second fluid chamber to drive a predetermined volume of the second fluid from the second fluid chamber, through the second fluid delivery path to the common connector, and out the common outlet.
1 Assignment
0 Petitions
Accused Products
Abstract
A mechanical injection pump wearable by a user to deliver a first fluid and a second fluid, including: a pump body having a first fluid chamber to hold the first fluid and a second fluid chamber to hold the second fluid; a common connector having a first inlet, a second inlet, and a common outlet; a first fluid system including the first fluid chamber, a first button drive connected to the first fluid chamber, and first fluid delivery path between the first fluid chamber and the first inlet; and a second fluid system including the second fluid chamber, a second button drive connected to the second fluid chamber, and second fluid delivery path between the second fluid chamber and the second inlet. Force by the user on the button drive increases pressure within the fluid chamber to drive a predetermined volume of the fluid from the fluid chamber.
-
Citations
14 Claims
-
1. A mechanical injection pump wearable by a user to deliver a first fluid and a second fluid, the mechanical injection pump comprising:
-
a pump body defining a first fluid chamber and a second fluid chamber, the first fluid chamber being operable to hold the first fluid and the second fluid chamber being operable to hold the second fluid; a common connector having a first inlet, a second inlet, and a common outlet; a first fluid system including the first fluid chamber, a first button drive operably connected to the first fluid chamber, a first fluid delivery path in fluid communication between the first fluid chamber and the first inlet, a first piston slideably disposed in the first fluid chamber, and a first axial shaft operably connected between the first button drive and the first piston, wherein the first axial shaft has external threads, and the first button drive comprises; an axially fixed ratchet wheel having exterior teeth and internal threads, the internal threads being engaged with the first external threads of the first axial shaft; and a ratchet assembly operable to engage the exterior teeth of the axially fixed ratchet wheel; and a second fluid system including the second fluid chamber, a second button drive operably connected to the second fluid chamber, a second fluid delivery path in fluid communication between the second fluid chamber and the second inlet, a second piston slideably disposed in the second fluid chamber, and a second axial shaft operably connected between the second button drive and the second piston; wherein force by the user on the first button drive causes the ratchet assembly to rotate the axially fixed ratchet wheel a predetermined angle to advance the first piston a first predetermined distance into the first fluid chamber to drive a predetermined volume of the first fluid from the first fluid chamber, through the first fluid delivery path to the common connector, and out the common outlet; and force by the user on the second button drive advances the second piston a second predetermined distance into the second fluid chamber to drive a predetermined volume of the second fluid from the second fluid chamber, through the second fluid delivery path to the common connector, and out the common outlet. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A method of use for a mechanical injection pump, the method comprising:
-
deploying the mechanical injection pump at the user, the mechanical injection pump having a first fluid system and a second fluid system, the first fluid system including a first fluid chamber, a first button drive operably connected to the first fluid chamber, a first fluid delivery path in fluid communication between the first fluid chamber and a common outlet, a first piston slideably disposed in the first fluid chamber, and a first axial shaft operably connected between the first button drive and the first piston, wherein the first axial shaft has external threads, and the first button drive comprises; an axially fixed ratchet wheel having exterior teeth and internal threads, the internal threads being engaged with the first external threads of the first axial shaft; and a ratchet assembly operable to engage the exterior teeth of the axially fixed ratchet wheel, and the second fluid system including a second fluid chamber, a second button drive operably connected to the second fluid chamber, a second fluid delivery path in fluid communication between the second fluid chamber and the common outlet, a second piston slideably disposed in the second fluid chamber, and a second axial shaft operably connected between the second button drive and the second piston; applying force to the first button drive to cause the ratchet assembly to rotate the axially fixed ratchet wheel a predetermined angle to advance the first piston a first predetermined distance into the first fluid chamber and drive a predetermined volume of the first fluid from the first fluid chamber and out the common outlet; and applying force to the second button drive to advance the second piston a second predetermined distance into the second fluid chamber and drive a predetermined volume of the first fluid from the second fluid chamber and out the common outlet. - View Dependent Claims (12, 13, 14)
-
Specification