MESH PROTECTION SYSTEM

• US 20130103006A1
• Filed: 10/19/2011
• Published: 04/25/2013
• Est. Priority Date: 10/19/2011
• Status: Abandoned Application

• Current Assignee: Aqulinx Medical, Inc.
• Original Assignee: Palyon Medical Corporation
• Inventors: Schleicher, Brett
• Application Number:
  US13/276,469
• Publication Number:
  US 20130103006A1
• Time in Patent Office: Days
• US Class Current: 604/891.1
• CPC Class Codes: A61M 2039/0081 Means for facilitating introduction of a needle in the septum, e.g. guides, special construction of septum
• CPC Class Codes: A61M 2039/009 Means for limiting access to the septum, e.g. shields, grids
• CPC Class Codes: A61M 2039/0238 having means for locating the implanted device to insure proper injection, e.g. radio-emitter, protuberances, radio-opaque markers
• CPC Class Codes: A61M 2209/045 for filling, e.g. for filling reservoirs
• CPC Class Codes: A61M 39/0208 Subcutaneous access sites for injecting or removing fluids transcutaneous access sites A61M39/0247; implantable infusion devices A61M5/14276
• CPC Class Codes: A61M 5/14276 specially adapted for implantation

Abstract

An improved safety feature for preventing overdosage to a patient is disclosed. In one embodiment, the feature includes an improved screen member that prevents the inadvertent entry of a needle having too large a diameter. The screen member includes a plurality of holes that are configured so as to rid unwanted dead spaces that can damage an injection device during injection. Another embodiment of the safety feature includes a plurality of pins situated so as to similarly create a plurality of openings for reception of certain sized injection devices. Methods of providing a bolus dose to a patient are also disclosed.

Claims

1. An implantable pump comprising:

a housing having a replenishment port and a bolus port;

a cover disposed on the housing, the cover partially covering the bolus port and including an entry opening allowing for entry into the bolus port; and

a screen member associated with the entry opening, the screen member including a plurality of square holes sized so as to prevent entry of an injection device having a larger size into the bolus port.

2. The implantable pump of claim 1, wherein the replenishment and bolus ports are covered by septa.

3. The implantable pump of claim 2, wherein the bolus port extends around the perimeter of the housing.

4. The implantable pump of claim 3, wherein the housing is circular and the entry opening is an arcuate portion.

5. The implantable pump of claim 4, wherein the entry opening includes sloped walls.

6. The implantable pump of claim 5, wherein the entry opening includes bounding walls disposed at its ends.

7. The implantable pump of claim 6, wherein the bounding walls converge towards the replenishment opening.

8. The implantable pump of claim 1, wherein the square holes of the screen member include sloped walls.

9. The implantable pump of claim 8, wherein the screen member is constructed of a metallic material.

10. The implantable pump of claim 9, wherein the screen member is a wire mesh.

11. The implantable pump of claim 1, wherein the screen member is disposed between the housing and the cover.

12. The implantable pump of claim 11, wherein the screen member is press fit within the entry opening.

13. The implantable pump of claim 12, wherein the screen member includes a flange.

14. The implantable pump of claim 1, wherein the cover further includes a replenishment opening allowing for entry into the replenishment port.

15. The implantable pump of claim 1, wherein the injection device is a needle or syringe.

16. A screen member for use in an implantable pump comprising:

a body having a plurality of square holes formed therethrough and a flange,

wherein the square holes include sloped walls defining a minimum size so as to prevent entry of an injection device having a larger size therein.

17. The screen member of claim 16, wherein the body is constructed of a metallic material.

18. The screen member of claim 17, wherein the body is a wire mesh.

19. The screen member of claim 16, wherein the body further includes a flange.

20. The screen member of claim 16, wherein the body is of an arcuate shape.

21. An implantable pump comprising:

a housing having a replenishment port and a bolus port; and

a plurality of pins partially covering the bolus port, the plurality of pins defining a plurality of holes sized so as to prevent entry of an injection device having a larger size into the bolus port.

22. The implantable pump of claim 21, further comprising a cover covering the housing.

23. The implantable pump of claim 22, wherein the cover defines an entry opening allowing access to the bolus port.

24. The implantable pump of claim 23, wherein the housing is circular and the entry opening is an arcuate portion.

25. The implantable pump of claim 24, wherein the entry opening includes sloped walls.

26. The implantable pump of claim 25, wherein the entry opening includes bounding walls disposed at its ends.

27. The implantable pump of claim 26, wherein the plurality of pins are disposed within hole formed in the sloped walls and bounding walls.

28. The implantable pump of claim 21, wherein the plurality of holes defined by the plurality of pins are square shaped.

29. The implantable pump of claim 21, wherein the pins are constructed of a metallic material.

30. The implantable pump of claim 21, wherein the injection device is a needle or syringe.