Reservoir and administration device with ratcheting mechanism

• US 8,430,848 B1
• Filed: 08/13/2010
• Issued: 04/30/2013
• Est. Priority Date: 08/13/2010
• Status: Expired due to Fees

• Current Assignee: Jonathan Dawrant
• Original Assignee: Jonathan Dawrant
• Inventors: Dawrant, Jonathan
• Primary Examiner(s): Sirmons, Kevin C
• Assistant Examiner(s): OSINSKI, BRADLEY JAMES
• Application Number:
  US12/855,817
• Time in Patent Office: 991 Days
• Field of Search: 417/477.2, 604132-314, 604/453
• US Class Current: 604/132
• CPC Class Codes: A61M 37/00 Other apparatus for introducing media into the body for reproduction or fertilisation A61B17/425; apparatus for iontophoresis or cataphoresis A61N1/30; Percutany, i.e. introducing medicines into the body by diffusion through the skin salt baths A61H33/04

Abstract

A fluid reservoir and administration device for delivering a dosage of a medicament to a patient. The device has a base unit attachable to the skin, a reservoir unit attachable to the base unit, and a cap unit attachable to the reservoir unit. The base unit has a latching member, and a needle. The reservoir unit has a fluid filled cavity, a ratcheting element, a threaded member, and a plunger for forcing the fluid through the needle. The cap unit has ratcheting teeth engagable with the ratcheting member, and a threaded post engagable with the threaded member of the reservoir unit. When the cap unit is rotated, the threaded post is advanced toward the plunger which forces a metered dosage of the fluid through the needle and to the patient. The ratcheting member allows the cap unit to rotate in a single direction, thereby preventing a vacuum in the cavity.

Claims

1. A fluid reservoir and administration device for delivering a dosage of a medicament to a patient, said device comprising:

a base unit having a main support, at least one latching member, and at least one needle extending through said main support;

a reservoir unit having a housing defining a cavity therein filled with a fluid, at least one ratcheting element located on said housing, a threaded member, and a plunger moveable received in said cavity, said housing further including a base configured to be releasably secured to said main support of said base unit by said latching member of said base unit; and

a cap unit having a side wall, a top wall, a defined open bottom configured to receive said reservoir unit therein, a plurality of ratcheting teeth engagable with said ratcheting element of said reservoir unit, and a threaded post threadably engagable with said threaded member of said reservoir unit, said threaded post having a distal end configured to be contact with and move said plunger of said reservoir unit when said cap unit is rotated;

wherein said proximal end of said needle of said base unit being in fluid communication with said fluid in said cavity of said reservoir unit when said reservoir unit is fitted to said base unit;

wherein said reservoir unit further comprising at least one ramp adjacent said side wall and said main support, said ramp defining a notch configured to receive a protrusion extending from said plunger of said reservoir unit when said plunger is adjacent said main support.

2. The fluid reservoir and administration device according to claim 1, wherein said ratcheting element of said reservoir unit being located on an exterior of said housing, said ratcheting teeth of said cap unit extending interiorly from said side wall of said cap unit, and said threaded post of said cap unit extending interiorly from said top wall toward said open bottom.

3. The fluid reservoir and administration device according to claim 1, wherein said main support of said base unit further comprising an adhesive layer.

4. The fluid reservoir and administration device according to claim 1, wherein main support of said base unit further comprising at least one ridge located adjacent a periphery of said main support, said ridge being configured to guide and retain said base of said reservoir unit in a position on said base unit.

5. The fluid reservoir and administration device according to claim 1, wherein said base unit further comprising a sheath fixed to said main support and positioned so as to cover a proximal end of said needle.

6. The fluid reservoir and administration device according to claim 5, wherein said sheath having at least a side, and an occluding portion that has a thickness greater than said side, said sheath is flexible allowing said proximal end of said needle to perforate said occluding portion of said sheath when said sheath is depressed.

7. The fluid reservoir and administration device according to claim 1, wherein said reservoir unit further comprising a spherical element between a distal end of said ratcheting element and said base, said spherical element being configured to engage with said ratcheting teeth of said cap unit in multiple rotational directions when said ratcheting teeth are adjacent said spherical element respectively.

8. The fluid reservoir and administration device according to claim 1, wherein said base of said reservoir unit further comprising a seal configured to be perforated by said proximal end of said needle when said reservoir unit is fitted to said base unit.

9. The fluid reservoir and administration device according to claim 1, wherein said threaded member of said reservoir unit being multiple fingers extending angularly away from said top wall of said reservoir unit and toward each other, each of said fingers having a distal end which terminates before contacted said distal ends of the remaining said fingers and which face each other, said distal ends including threads so as to define a threaded opening between the distal ends of said fingers.

10. The fluid reservoir and administration device according to claim 1, wherein said threaded post of said cap unit having a non-threaded portion adjacent said top wall of said cap unit, said non-threaded portion being configured to allow said cap unit to freely rotate in multiple rotational directions when said ratcheting teeth of said cap unit are adjacent spherical elements located between said ratcheting member and said main support of said reservoir unit.

11. The fluid reservoir and administration device according to claim 1, wherein said fluid in said cavity of said reservoir unit is insulin.

12. A medicament reservoir and administration device comprising:

a base unit having a main support, at least one latching member, at least one needle extending through said main support, an adhesive layer, and a sheath configured to cover a proximal end of said needle;

a reservoir unit having a housing defining a cavity therein filled with a fluid, at least one ratcheting element located on an exterior of said housing, a threaded member, and a plunger moveable received in said cavity, said housing further including a base configured to be releasable secured to said main support of said base unit by said latching member of said base unit; and

a cap unit having a side wall, a top wall, a defined open bottom, a plurality of ratcheting teeth extending interiorly from said side wall adjacent said open bottom, and a threaded post extending interiorly from said top wall toward said open bottom, said ratcheting teeth being configured to engage with said ratcheting member of said reservoir unit respectively, said threaded post being configured to threadably engage with said threaded member of said reservoir unit, said threaded post having a distal end configured to be contact with and move said plunger of said reservoir unit when said cap unit is rotated;

wherein said proximal end of said needle of said base unit being in fluid communication with said fluid in said cavity of said reservoir unit when said reservoir unit is fitted to said base unit;

wherein said cap unit is able to freely rotate in multiple rotational directions when said cap unit is adjacent said base of said reservoir unit.

13. The fluid reservoir and administration device according to claim 12, wherein said sheath having at least a side, and an occluding portion that has a thickness greater than said side, said sheath is flexible allowing said proximal end of said needle to perforate said occluding portion of said sheath when said sheath is depressed.

14. The fluid reservoir and administration device according to claim 12, wherein said reservoir unit further comprising a spherical element between a distal end of said ratcheting element and said base, said spherical element being configured to engage with said ratcheting teeth of said cap unit in multiple rotational directions when said ratcheting teeth are adjacent said spherical element respectively.

15. The fluid reservoir and administration device according to claim 12, wherein said base of said reservoir unit further comprising a seal configured to be perforated by said proximal end of said needle when said reservoir unit is fitted to said base unit.

16. The fluid reservoir and administration device according to claim 12, wherein said threaded member of said reservoir unit being multiple fingers extending angularly away from said top wall of said reservoir unit and toward each other, each of said fingers having a distal end which terminates before contacted said distal ends of the remaining said fingers and which face each other, said distal ends including threads so as to define an threaded opening between the distal ends of said fingers.

17. The fluid reservoir and administration device according to claim 12, wherein said reservoir unit further comprising at least one ramp adjacent said side wall and said main support, said ramp defining a notch configured to receive a protrusion extending from said plunger of said reservoir unit when said plunger is adjacent said main support.

18. The fluid reservoir and administration device according to claim 12, wherein said threaded post of said cap unit having a non-threaded portion adjacent said top wall of said cap unit, said non-threaded portion being configured to allow said cap unit to freely rotate in multiple rotational directions when cap unit is adjacent said base of said reservoir unit.

19. The fluid reservoir and administration device according to claim 12, wherein said fluid in said cavity of said reservoir unit is insulin.