Pinch clip occluder for infusion sets

• US 5,704,584 A
• Filed: 05/10/1996
• Issued: 01/06/1998
• Est. Priority Date: 03/27/1995
• Status: Expired due to Term

• Current Assignee: Zevex (Moog Incorporated)
• Original Assignee: Zevex (Moog Incorporated)
• Inventors: Child, Michael, Dumas, Chris, Winterer, Sean, McNally, David J.
• Primary Examiner(s): FOX, JOHN C
• Application Number:
  US08/644,706
• Time in Patent Office: 606 Days
• Field of Search: 251/7, 417/279, 417/477.2, 417/477.9, 417/478, 417/479
• US Class Current: 251/7
• CPC Class Codes: A61M 39/281 Automatic tube cut-off devices, e.g. squeezing tube on detection of air
• CPC Class Codes: A61M 39/286 Wedge clamps, e.g. roller clamps with inclined guides
• CPC Class Codes: A61M 5/142 Pressure infusion, e.g. using pumps

Abstract

A pinch clip occluder for infusion sets is disclosed including a housing and a clamp movably disposed within the housing to selectively occlude an infusion set. In one embodiment the clamp has at least one arm which moves between first and second positions to pinch closed a silicone tube of the infusion set unless the pinch clip occluder is held in an open position by the user, or placed in a receptacle which will hold the pinch clip occluder in an open position. In another embodiment a plunger is disposed so as to intersect a passage passing through the housing. As the plunger is selectively moved between first and second positions, the flow through a tube in the passage is selectively controlled. Such an arrangement prevents a free-flow condition from occurring through the infusion set.

Claims

1. Apparatus for selectively controlling flow through one or more tubes of an infusion delivery set, the apparatus comprising:

a pump housing having;

at least one channel disposed therein for receiving a tube of the delivery set,

a cover means for holding the tube of the delivery set within the housing, the cover means having an open position wherein the delivery set can be removed from the at least one channel, and a closed position, wherein the delivery set cannot be removed from the at least one channel, and

a void formed therein for receiving an occluder means;

an occluder means nestible within the pump housing, the occluder means comprising;

an occluder housing having an open first end and an open second end and a passage therethrough extending from the open first end to the open second end for receiving the tube of the delivery set;

flow restriction means disposed at least partially within the housing and moveable between a first position in which the flow restriction means occludes flow through the tube of the delivery set and a second position in which the flow restriction means does not occlude flow through the tube; and

biasing means disposed adjacent the housing and the flow restriction means for biasing the flow restricting means into the first position; and

wherein the cover means is disposed to contact and move the flow restriction means into the second position when the cover means is moved into the closed position.

2. The apparatus of claim 1, wherein the flow restriction means comprises at least one arm slidably movable between a first position in which the at least one arm pinches the tube so as to prevent flow therethrough, and a second position in which the at least one arm no longer pinches the tube.

3. The apparatus of claim 1, wherein the flow restriction means comprises a plunger having a plunger passage therethrough, the plunger being movable between a first position in which the plunger passage is not in alignment with the passage of the housing so as to occlude flow through the tube passing through the passage of the housing, and a second position in which the plunger passage is in alignment with the passage of the housing so as to allow flow though said tube passing through the passage of the housing.

4. The apparatus of claim 1, wherein the occlusion means further comprises an adapter disposed adjacent the occluder housing for connecting two tube sections of a delivery set, one of said two tube sections being at least partially disposed in the occluder housing.

5. The apparatus of claim 1, wherein the at least one channel in the pump housing defines a passage, and wherein the passage of the occluder means is in alignment with the passage of the pump housing when the occluder means is nested in the pump housing.

6. The apparatus of claim 5, wherein flow through the delivery set is precluded when the passage of the occluder means is not in alignment with the passage of the pump housing.

7. The apparatus of claim 1, wherein the flow restriction means comprises a plunger having a long axis, and wherein the occluder housing has a long axis disposed perpendicular to the long axis of the plunger.

8. The apparatus of claim 7, wherein the passage in the occluder means has a long axis which is disposed generally perpendicular to the plunger.

9. The apparatus of claim 1, Wherein the pump housing has a pair of channels disposed therein for holding the delivery set.

10. The apparatus of claim 1, wherein the plunger further comprises a knob disposed thereon opposite the occluder housing for nesting within the void in the pump housing when the occluder is disposed in the void with the plunger extending downwardly.

11. The apparatus of claim 1, wherein the occluder further comprises a knob extending downwardly from the occluder housing so as to nest within the void in the pump housing when the occluder is disposed therein right side up.

12. An apparatus for preventing free flow in a tube of a delivery set when used with a pump, the apparatus comprising:

a pump housing means for holding a tube of the delivery set, the pump housing means having at least one channel disposed therein for receiving the tube, and a cover means for selectively holding the tube within the at least one channel, the cover means having an open position wherein the tube can be removed from the at least channel, and a closed position, wherein the tube is held within the at least one channel;

occluder means for selectively preventing flow through the tube, the occluder means comprising;

an occluder housing having an open first end, an open second end and a passage extending from the open first end to the open second end for holding a tube of an infusion set; and

plunger means disposed generally transverse to the passage of the occluder housing for selectively occluding flow through the tube, the plunger means comprising a plunger passage movable between a first position wherein the plunger passage is not in alignment with the passage through the occluder housing so as to occlude flow through the tube, and a second position wherein the plunger passage is in alignment with the passage through the occluder housing so as to allow flow through the tube; and

wherein the cover means is disposed so that when the cover means is moved into the closed position, the cover means contacts and moves the plunger means from the first position, wherein the plunger passage is not in alignment with the passage through the occluder housing, to the second position, wherein the plunger passage is in alignment with the passage through the occluder housing.

13. The apparatus of claim 12, wherein the occluder means further comprising biasing means for biasing the plunger means into the first position.

14. The apparatus of claim 12, wherein the occluder housing comprises at least one wall defining an orifice disposed about the passage adjacent the plunger means such that when the plunger means is disposed within the first position, the tube extending through the passage of the occluder housing and the plunger passage is pinched between the plunger and the at least one wall so as to prevent flow through the tube.

15. The apparatus of claim 12, wherein the occluder housing has a first end and a second end, each end having an opening formed therein, and an inner wall disposed between the first end and the second end.

16. The apparatus of claim 12, wherein the plunger means has a long axis, and wherein the occluder housing has a long axis perpendicular to the long axis of the plunger means.

17. The apparatus of claim 12, wherein the plunger means has a knob disposed thereon on a side opposite the occluder housing for nesting within the void of the pump housing.

18. The apparatus of claim 12, wherein the occluder further comprises a knob extending downwardly from the occluder housing for nesting in the void in the pump housing.

19. Apparatus for selectively controlling flow through one or more tubes of an infusion delivery set, the apparatus comprising:

a pump housing having;

at least one channel disposed therein for receiving a tube of the delivery set,

a cover means for holding the tube of the delivery set within the housing, the cover means having an open position wherein the delivery set can be removed from the at least one channel, and a closed position, wherein the delivery set cannot be removed from the at least one channel, and

a void formed therein for receiving an occluder means;

an occluder means nestible within the pump housing, the occluder means comprising;

an occluder housing having an open first end and an open second end and a passage therethrough extending from the open first end to the open second end for receiving the tube of the delivery set, the occluder housing further comprising a knob disposed so as to extend downward from the housing for disposition in the void in the pump housing;

flow restriction means disposed at least partially within the housing and moveable between a first position in which the flow restriction means occludes flow through the tube of the delivery set and a second position in which the flow restriction means does not occlude flow through the tube; and

biasing means disposed adjacent the housing and the flow restriction means for biasing the flow restricting means into the first position; and

wherein the cover means is disposed to contact and move the flow restriction means into the second position when the cover means is moved into the closed position.