Infusion pump syringe
First Claim
1. A syringe for use with an infusion pump, the infusion pump having a cavity for receiving the syringe, the cavity including a shaped opening for guiding the syringe upon insertion into the cavity, the syringe comprising:
- a syringe body comprising a tube that is open at a first end and a tapered transition to a passage at a second end and a connector extending from the passage, the connector for attachment to an infusion set or tubing; and
a plunger slidably mounted inside the tube comprising a plunger tip having a front face that is complementarily received by the tapered second end of the tube, the plunger tip forming an interference fit with the tube, and a plunger rod having a first end attached to the plunger tip and a second end projecting outside the first end of the tube, the plunger rod having a cross-sectional shape at least partly conforming to the shape of the shaped opening in the cavity and wherein the cross-sectional shape of the plunger rod is substantially U-shaped, the plunger rod being unobstructed for purposes of longitudinal insertion of the syringe through the shaped opening in the cavity.
5 Assignments
0 Petitions
Accused Products
Abstract
A syringe for use with an infusion pump, the infusion pump having a cavity for receiving the syringe. The syringe includes a syringe body, a plunger and an end cap. The syringe body has a tube that is open at a first end and transitions to a passage at a second end and a connector extending from the passage, the connector for attachment to an infusion set or tubing. The plunger is slidably mounted inside the tube and comprises a plunger tip and a plunger rod. The plunger tip has a front face that is complementarily received by the second end of the tube and a rear face, the plunger tip forming an interference fit with the tube. The plunger rod has a first end attached to the plunger tip and a second end extending outside the first end of the tube. The plunger rod has a cross-sectional shape that is complementarily received by the cavity of the infusion pump when inserted in only one direction. The end cap is attached to the first end of the tube and has an opening that is shaped to complementarily receive the plunger rod.
91 Citations
19 Claims
-
1. A syringe for use with an infusion pump, the infusion pump having a cavity for receiving the syringe, the cavity including a shaped opening for guiding the syringe upon insertion into the cavity, the syringe comprising:
-
a syringe body comprising a tube that is open at a first end and a tapered transition to a passage at a second end and a connector extending from the passage, the connector for attachment to an infusion set or tubing; and
a plunger slidably mounted inside the tube comprising a plunger tip having a front face that is complementarily received by the tapered second end of the tube, the plunger tip forming an interference fit with the tube, and a plunger rod having a first end attached to the plunger tip and a second end projecting outside the first end of the tube, the plunger rod having a cross-sectional shape at least partly conforming to the shape of the shaped opening in the cavity and wherein the cross-sectional shape of the plunger rod is substantially U-shaped, the plunger rod being unobstructed for purposes of longitudinal insertion of the syringe through the shaped opening in the cavity. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
-
-
19. A syringe for use with an infusion pump, the infusion pump having a cavity with a U-shaped opening for guiding the syringe upon insertion into the infusion pump, the syringe comprising:
-
a syringe body comprising a tube having a tapered first end and an open second end, the first end being adapted for connection to an infusion path or tubing;
a plunger slidably mounted inside the tube, the plunger forming a fit with the tube such that no liquid passes between the tapered first end and the second end when the plunger is mounted in the tube;
a plunger rod attached to the plunger and projecting axially beyond the second end of the tube, the plunger rod having a cross-sectional shape that is substantially U-shaped and correspondingly shaped to the U-shaped opening in the cavity, the plunger rod being unobstructed for purposes of longitudinal insertion of the syringe through the U-shaped opening into the infusion pump.
-
Specification