Safety mechanisms for belt cartridge used with chest compression devices

• US 7,404,803 B2
• Filed: 10/14/2003
• Issued: 07/29/2008
• Est. Priority Date: 10/14/2003
• Status: Expired due to Fees

• Current Assignee: Zoll Circulation Incorporated (Asahi Kasei Corporation)
• Original Assignee: Zoll Circulation Incorporated (Asahi Kasei Corporation)
• Inventors: Hall, Gregory W., Dalbec, Timothy R., Katz, Bob H.
• Primary Examiner(s): DEMILLE, DANTON D
• Application Number:
  US10/686,184
• Publication Number:
  US 20050080360A1
• Time in Patent Office: 1,750 Days
• Field of Search: 601/41, 601/44, 601143-148, 601/151, 601/152, 602 32- 35, 602/38, 128/849, 128/876
• US Class Current: 601/41
• CPC Class Codes: A61H 2201/0173 Means for preventing injuries
• CPC Class Codes: A61H 2201/5007 computer controlled
• CPC Class Codes: A61H 31/00 Artificial respiration or heart stimulation, e.g. heart massage artificial respiration by treatment with gas or air, e.g. mouth-to-mouth respiration A61M16/00; applying electric currents by contact electrodes for stimulation, e.g. heart pace-makers A61N1/36 ; teaching or training models, demonstration models for medical purposes G09B23/288
• CPC Class Codes: A61H 31/005 with feedback for the user
• CPC Class Codes: A61H 31/006 Power driven
• CPC Class Codes: A61H 31/008 Supine patient supports or bases, e.g. improving air-way access to the lungs
• CPC Class Codes: Y10S 601/06 Artificial respiration conforming to shape of torso
• CPC Class Codes: Y10S 601/20 Flexible membrane caused to be moved

Abstract

Safety mechanisms for compression belt cartridges used in chest compression devices. The safety mechanisms include a breakable link, liner socks, belt guards and a rapid-release connector. The breakable link ensures that unsafe belt tension will not occur. The liner socks protect the patient from friction and contain the breakable link. The belt guards protect foreign objects from entering the belt drive platform. The rapid-release connector allows the belt to be removed safely even during compressions.

Claims

1. A system for performing chest compressions on a patient, said system comprising:

a housing;

a drive spool operably attached to the housing;

a means for rotating the drive spool, said means for rotating disposed within the housing and operably attached to the drive spool;

a compression belt attachable to the drive spool, the compression belt comprising;

a belt suitable for compressing the chest of the patient;

a liner sock loosely fitted over the belt and

a breakable link attached to the belt, said breakable link sized and dimensioned to break when a particular amount of force is applied to the link, and wherein the breakable link is attached to the belt such that if the breakable link breaks, the belt will separate.

2. A system for performing chest compressions on a patient, said system comprising:

a housing;

a drive spool operably attached to the housing;

a means for rotating the drive spool, said means for rotating disposed within the housing and operably attached to the drive spool;

a compression belt attachable to the drive spool, the compression belt comprising;

a belt suitable for compressing the chest of the patient;

a compression pad attached to the belt and disposed between the belt and the patient;

a liner sock loosely fitted over the belt and the compression pad and

a breakable link attached to the belt, said breakable link sized and dimensioned to break when a particular amount of force is applied to the link, and wherein the breakable link is attached to the belt such that if the breakable link breaks, the belt will separate.

3. A system for performing chest compressions on a patient, said system comprising:

a housing;

a drive spool operably attached to the housing;

a means for rotating the drive spool, said means for rotating disposed within the housing and operably attached to the drive spool;

a first spindle rotatably attached to the housing;

a second spindle rotatably attached to the housing;

a compression belt cartridge comprising;

a belt attached to the drive spool, the belt suitable for compressing the chest of the patient;

a liner sock loosely fitted over the belt;

a first belt guard removably attachable to the first spindle, the first belt guard operably attached to the belt such that the belt may slide through the first belt guard; and

a second belt guard is removably attachable to the second spindle, the second belt guard operably attached to the belt such that the belt may slide through the second belt guard.

4. The system of claim 3 further comprising a compression pad attached to the belt.

5. The system of claim 3 wherein:

the compression belt cartridge further comprises a cover plate removably attached to the housing; and

the first belt guard is operably attached to the cover plate and the second belt guard is operably attached to the cover plate opposite the first belt guard.

6. The system of claim 5 further comprising:

a first hinge rotatably connecting the first belt guard to the cover plate;

a second hinge rotatably connecting the second belt guard to the cover plate.

7. The system of claim 6 further comprising:

a first ratchet attached to the first belt guard and a first pawl attached to the cover plate, said first pawl operatively engaging the first ratchet; and

a second ratchet attached to the second belt guard and a second pawl attached to the cover plate, said second pawl operatively engaging the second ratchet.

8. The system of claim 3 wherein the compression belt cartridge further comprises:

a belt attached to the drive spool, the belt having a first portion and a second portion, the belt suitable for compressing the chest of the patient;

a cover plate removably attachable to the housing;

a first belt guard removably attachable to the first spindle, the first belt guard operably attached to the belt such that the first portion of the belt may slide through the first belt guard; and

a second belt guard is removably attachable to the second spindle, the second belt guard operably attached to the belt such that the second portion of the belt may slide through the second belt guard;

a first liner sock loosely fitted over the first portion of the belt, said first liner sock attached to the first portion of the belt and attached to the first belt guard;

a second liner sock loosely fitted over the second portion of the belt, said second liner sock attached to the second portion of the belt and attached to the second belt guard;

a compression pad attached to the first portion of the belt and disposed within the first liner sock; and

a breakable link attached to the belt, said breakable link sized and dimensioned to break when a particular amount of force is applied to the link, and wherein the breakable link is attached to the belt such that if the breakable link breaks, the belt will separate.

9. The system of claim 8 further comprising:

a first hinge rotatably connecting the first belt guard to the cover plate; and

a second hinge rotatably connecting the second belt guard to the cover plate.

10. The system of claim 8 further comprising:

a first ratchet attached to the first belt guard and a first pawl attached to the cover plate, said first pawl operatively engaging the first ratchet; and

a second ratchet attached to the second belt guard and a second pawl attached to the cover plate, said second pawl operatively engaging the second ratchet.

11. The system of claim 8 wherein the breakable link is disposed inside the first liner sock.

12. The system of claim 8 wherein the breakable link is disposed inside a sleeve attached to the belt.

13. The system of claim 12 wherein the breakable link is disposed inside a sleeve, said sleeve attached to the belt and disposed inside the first liner sock.

14. The system of claim 8 wherein the first belt guard is provided with a first belt slot and the second belt guard is provided with a second belt slot, wherein the belt is threaded through the first belt slot and through the second belt slot.

15. A method of performing chest compressions on a patient, said method comprising the steps of:

providing system for performing chest compressions comprising;

a housing;

a drive spool operably attached to the housing;

a means for rotating the drive spool, said means for rotating disposed within the housing and operably attached to the drive spool;

a compression belt cartridge comprising;

a belt removably attached to the drive spool, the belt suitable for compressing the chest of the patient, the belt having a first portion and a second portion;

a first liner sock disposed around the first portion of the belt, the first liner sock attached to the first portion of the belt;

a second liner sock disposed around the second portion of the belt, the second liner sock attached to the second portion of the belt;

a compression pad attached to the first portion of the belt and disposed within the first liner sock; and

a breakable link attached to the belt such that if the breakable link breaks the belt will separate, the breakable link sized and dimensioned to break when a particular amount of force is applied to the link;

placing the patient on the housing;

wrapping the first and second portions of the belt at least partially around the chest of the patient such that the belt is capable of compressing the chest of the patient; and

rotating the drive spool to tighten the belt to compress the chest.

16. The method of claim 15 comprising the further steps of:

detaching the cover plate from the housing and removing the belt from the drive spool;

providing a second compression belt cartridge comprising;

a second belt suitable for compressing the chest of the patient, said second belt having a first portion and a second portion;

a third liner sock disposed around the first portion of the second belt, said third liner sock attached to the first portion of the second belt;

a fourth liner sock disposed around the second portion of the second belt, said fourth liner sock attached to the second portion of the second belt;

a second compression pad attached to the first portion of the second belt and disposed within the third liner sock; and

a second breakable link attached to the second belt such that if the second breakable link breaks, the second belt will separate, said second breakable link sized and dimensioned to break when a particular amount of force is applied to the second link;

attaching the second belt to the drive spool;

wrapping the first and second portions of the second belt at least partially around the chest of the patient such that the second belt is capable of compressing the chest of the patient; and

rotating the drive spool to tighten the second belt to compress the chest of the patient.

17. The method of claim 15, wherein the step of providing a system for performing chest compressions comprises:

providing system for performing chest compressions comprising;

a housing;

a drive spool operably attached to the housing;

a means for rotating the drive spool, said means for rotating disposed within the housing and operably attached to the drive spool;

a first spindle rotatably attached to the housing;

a second spindle rotatably attached to the housing;

a compression belt cartridge comprising;

a belt removably attached to the drive spool, the belt suitable for compressing the chest of the patient, the belt having a first portion and a second portion;

a cover plate removably attachable to the housing;

a first belt guard operably attached to the cover plate, the first belt guard is removably attachable to the first spindle and the first belt guard is operably attached to the belt such that the belt may slide through the first belt guard;

a second belt guard operably attached to the cover plate, the second belt guard is removably attachable to the second spindle and the second belt guard is operably attached to the belt such that the belt may slide through the second belt guard;

a first liner sock disposed around the first portion of the belt, said first liner sock attached to the first portion of the belt and attached to the first belt guard;

a second liner sock disposed around the second portion of the belt, said second liner sock attached to the second portion of the belt and attached to the second belt guard;

a compression pad attached to the first portion of the belt and disposed within the first liner sock; and

a breakable link attached to the belt such that if the breakable link breaks, the belt will separate, the breakable link sized and dimensioned to break when a particular amount of force is applied to the link.

18. The method of claim 17 comprising the further steps of:

removing the first patient from the housing;

detaching and removing the cover plate from the housing and removing compression belt cartridge, the first liner sock, the second liner sock, the first belt guard, the second belt guard, the compression pad and the belt from the drive spool;

providing a second compression belt cartridge comprising;

a second belt suitable for compressing the chest of a the patient, said second belt having a first portion and a second portion;

a second cover plate;

a third belt guard operably attached to the second cover plate, said third belt guard operably attached to the second belt such that the first portion of the second belt may slide through the third belt guard;

a fourth belt guard operably attached to the second cover plate, said fourth belt guard operably attached to the second belt such that the second portion of the second belt may slide through the fourth belt guard;

a third liner sock disposed around the first portion of the second belt, said third liner sock attached to the first portion of the second belt and attached to the third belt guard;

a fourth liner sock disposed around the second portion of the second belt, said fourth liner sock attached to the second portion of the second belt and attached to the fourth belt guard;

a second compression pad attached to the first portion of the second belt and disposed within the third liner sock; and

a second breakable link attached to the second belt such that if the second breakable link breaks, the second belt will separate, said second breakable link sized and dimensioned to break when a particular amount of force is applied to the second link;

attaching the second belt to the drive spool;

attaching the second cover plate to the housing;

attaching the third belt guard to the first spindle and the fourth belt guard to the second spindle;

placing a second patient on the housing;

wrapping the first and second portions of the second belt at least partially around the chest of the second patient such that the second belt is capable of compressing the chest of the second patient; and

rotating the drive spool to tighten the second belt to compress the chest of the second patient.