BATTERY SHOCK ABSORBER FOR A PORTABLE MEDICAL DEVICE

• US 20120095398A1
• Filed: 10/15/2010
• Published: 04/19/2012
• Est. Priority Date: 10/15/2010
• Status: Active Grant

• Current Assignee: Medtronic Minimed Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Minimed Incorporated (Medtronic Plc)
• Inventors: BAZARGAN, Afshin, FONACIER, EJMar, ALLEN, Kirk A., SRISATHAPAT, Chad
• Granted Patent: US 8,562,565 B2
• Time in Patent Office: Days
• US Class Current: 604/151
• CPC Class Codes: A61M 2205/18 with alarm
• CPC Class Codes: A61M 2205/58 Means for facilitating use, e.g. by people with impaired vision
• CPC Class Codes: A61M 2205/8206 battery-operated
• CPC Class Codes: A61M 5/14244 adapted to be carried by the patient, e.g. portable on the body
• CPC Class Codes: A61M 5/14248 of the skin patch type
• CPC Class Codes: H04R 1/2884 by means of the enclosure structure, i.e. strengthening or shape of the enclosure by means of Helmholtz resonators H04R1/2869
• CPC Class Codes: H04R 19/02 Loudspeakers H04R19/01 takes precedence
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

A device for delivering fluid to a user includes a housing, a drive motor assembly in the housing, other internal components in the housing, and a keypad external to the housing. The device includes a number of features and elements that enhance its operation, manufacturability, reliability, and user-friendliness. These features and elements include a shock absorbing element for a battery of the device, a keypad actuator layer that overlies a keypad assembly and forms a water resistant seal with the housing, and an offset element for a piezoelectric speaker that is located inside the housing.

Claims

1. A shock absorbing element for a battery of a medical device having a battery receptacle for the battery and having an electrical contact for the battery, the electrical contact residing within the battery receptacle, the shock absorbing element composed of a resilient material and comprising:

a perimeter sized and shaped to accommodate placement in the battery receptacle;

a through hole formed in the resilient material, the through hole being sized and shaped to accommodate the electrical contact;

a first side;

a second side; and

shock absorbing features formed on the first side or the second side to dissipate kinetic energy associated with motion of the battery relative to the battery receptacle.

2. The shock absorbing element of claim 1, wherein the shock absorbing element is a one-piece component composed of the resilient material.

3. The shock absorbing element of claim 1, wherein:

the perimeter is generally circular;

the through hole is generally round; and

the perimeter and the through hole are coaxial.

4. The shock absorbing element of claim 3, wherein the shock absorbing features comprise radial ridges formed from the resilient material.

5. The shock absorbing element of claim 3, wherein the shock absorbing features comprise radial depressions formed in the resilient material.

6. The shock absorbing element of claim 1, wherein at least one of the shock absorbing features is formed on the first side, and at least one of the shock absorbing features is formed on the second side.

7. The shock absorbing element of claim 1, wherein the shock absorbing features comprise:

a plurality of angled outer depressions, each having a respective high edge near the through hole and having a respective low edge near the perimeter; and

a plurality of angled inner depressions, each having a respective high edge near the perimeter and having a respective low edge near the through hole.

8. The shock absorbing element of claim 7, wherein:

at least one of the of angled outer depressions is formed on the first side;

at least one of the of angled inner depressions is formed on the first side;

at least one of the of angled outer depressions is formed on the second side; and

at least one of the of angled inner depressions is formed on the second side.

9. The shock absorbing element of claim 8, wherein:

each angled outer depression formed on the first side is aligned with a respective angled inner depression formed on the second side; and

each angled outer depression formed on the second side is aligned with a respective angled inner depression formed on the first side.

10. The shock absorbing element of claim 1, wherein the resilient material is an electrical insulator.

11. A shock absorbing assembly for a battery of a medical device, the shock absorbing assembly comprising:

a battery sleeve to house the battery, the battery sleeve having a base end;

an electrical contact for the battery, the electrical contact residing within the battery sleeve near the base end; and

a shock absorbing element located within the battery sleeve near the base end, the shock absorbing element composed of a resilient material having shock absorbing features integrally formed therein to dissipate kinetic energy associated with motion of the battery toward the base end.

12. The shock absorbing assembly of claim 11, wherein the shock absorbing element is ring-shaped and surrounds the electrical contact.

13. The shock absorbing assembly of claim 11, wherein the shock absorbing element is attached to the base end.

14. The shock absorbing assembly of claim 11, wherein the shock absorbing element is a one-piece component composed of the resilient material.

15. The shock absorbing assembly of claim 11, wherein the resilient material is an electrical insulator.

16. The shock absorbing assembly of claim 11, wherein the electrical contact comprises an electrically conductive spring.

17. A portable medical device comprising:

a housing;

a battery sleeve inside the housing, the battery sleeve having a base end, wherein the battery sleeve accommodates a battery for the portable medical device;

a battery contact located inside the battery sleeve near the base end; and

a resilient and compressive element located inside the battery sleeve near the base end, the battery contact protruding through the resilient and compressive element, wherein the resilient and compressive element dissipates kinetic energy associated with motion of the battery toward the base end.

18. The portable medical device of claim 17, wherein the battery sleeve is shaped and sized to accommodate a AA battery.

19. The portable medical device of claim 17, wherein the resilient and compressive element comprises shock absorbing features integrally formed therein.

20. The portable medical device of claim 17, wherein the resilient and compressive element is coupled to the base end such that it resides between the base end and the battery.

21. The portable medical device of claim 17, wherein the battery contact comprises an electrically conductive spring.

22. The portable medical device of claim 17, further comprising infusion pump hardware and an electronics module associated with the infusion pump hardware, wherein the battery serves as a power supply for the infusion pump hardware and the electronics module.