Using silicone o-rings in dual action irrigation pump

1. A disposable dual-action reciprocating pump part, comprising:

an input port;

an output port;

a piston and a cylinder, wherein the piston is configured to move bi-directionally inside the cylinder to cause fluid to be pumped from the input port and through the output port, the cylinder and output port being connected by a first channel disposed on a first side of the piston and a second channel disposed on a second side of the piston;

a first non-return valve disposed in the first channel such that fluid flows through the first channel and not the second channel while the piston moves toward the first channel;

a second non-return valve disposed in the second channel such that fluid flows through the second channel and not the first channel while the piston moves toward the second channel;

a rod coupled to the piston, the rod having a first portion extending away from the piston in a first direction and a second portion extending away from the piston in a second direction that is opposite to the first direction;

a balloon damper to smooth an output flow profile of a fluid pumped through the output port, the balloon damper disposed in a space between the first channel and the second channel, the space being connected to the output port via a third channel and a fourth channel such that the output flow profile is smoothed for fluid entering the output port from the first channel and fluid entering the output port from the second channel; and

multiple silicone O-rings, which are configured to seal the piston against the cylinder, the multiple silicone O-rings comprising a first silicone O-ring disposed about the piston, a second silicone O-ring disposed about the first portion of the rod, and a third silicone O-ring disposed about the second portion of the rod.

2. The disposable dual-action reciprocating pump part according to claim 1 , wherein at least one of the silicone-made O-rings is fixed relative to the piston and is configured to slide against the cylinder.

3. The disposable dual-action reciprocating pump part according to claim 1 , wherein a shape of the balloon damper comprises a crescent cylindrical shape.

4. A manufacturing method, comprising:

partially assembling a disposable dual-action reciprocating pump part having:

an input port,

an output port,

a cylinder,

a piston configured to move bi-directionally inside the cylinder to cause fluid to be pumped from the input port and through the output port, wherein the cylinder and output port are connected by a first channel disposed on a first side of the piston and a second channel disposed on a second side of the piston,

a rod coupled to the piston, the rod having a first portion extending away from the piston in a first direction and a second portion extending away from the piston in a second direction that is opposite to the first direction, and

a first non-return valve disposed in the first channel such that fluid flows through the first channel and not the second channel while the piston moves toward the first channel;

a second non-return valve disposed in the second channel such that fluid flows through the second channel and not the first channel while the piston moves toward the second channel

a balloon damper to smooth an output flow profile of a fluid pumped through the output port, the balloon damper disposed in a space between the first channel and the second channel, the space being connected to the output port via a third channel and a fourth channel such that the output flow profile is smoothed for fluid entering the output port from the first channel and fluid entering the output port from the second channel;

fitting multiple silicone made O-rings, which are configured to seal the piston against the cylinder, about the piston and rod, the multiple silicone O-rings comprising a first silicone O-ring disposed about the piston, a second silicone O-ring disposed about the first portion of the rod, and a third silicone O-ring disposed about the second portion of the rod; and

completing the assembly of the pump part.

5. The manufacturing method according to claim 4 , comprising packaging the fully assembled pump part in a sterile package.

6. The manufacturing method according to claim 4 , wherein a shape of the balloon damper comprises a crescent cylindrical shape.