CPR chest compression device with releasable base member

Patent metadata

Field	Value
Publication number	US-11844743-B2
Application number	US-202117507569-A
Country	US
Kind code	B2
Filing date	Oct 21, 2021
Priority date	Oct 23, 2017
Publication date	Dec 19, 2023
Grant date	Dec 19, 2023

Abstract

A CPR device having a base member configured to be placed underneath a patient, a chest compression mechanism configured to deliver CPR chest compressions to the patient, a support leg configured to support the chest compression mechanism at a distance from the base member, a clamp mechanism coupled to the support leg, and a release mechanism coupled to the support leg and the clamp mechanism. The clamp mechanism is configured to attach the support leg to a lock component of the base member in a latch-closed configuration and to release the support leg from the lock component in a latch-open configuration. The clamp mechanism is further configured to transition from the latch-closed configuration to the latch-open configuration when the lock component of the base member impacts an external portion of the clamp mechanism without the release mechanism being pulled away from the base member.

First claim

The invention claimed is:

1. A cardiopulmonary resuscitation (CPR) device, comprising:
a base member configured to be placed underneath a patient;
a chest compression mechanism configured to deliver CPR chest compressions to a patient;
a support leg configured to support the chest compression mechanism at a distance from the base member;
a clamp mechanism coupled to the support leg and configured to attach the support leg to a lock component of the base member in a latch-closed configuration of the clamp mechanism and to release the support leg from the lock component in a latch-open configuration of the clamp mechanism; and
a release mechanism coupled to the support leg and the clamp mechanism and configured to be pulled away from the base member and along the support leg to disengage a wedge portion of the release mechanism from a wedge portion of the clamp mechanism and to transition the clamp mechanism from the latch-closed configuration to the latch-open configuration;
in which the clamp mechanism is further configured to transition from the latch-closed configuration to the latch-open configuration when the lock component of the base member impacts an external portion of the clamp mechanism without the release mechanism being pulled away from the base member.

2. The CPR device of claim 1 , in which the lock component comprises a rod attached to the base member at two ends of the rod, the clamp mechanism attaching to a middle portion of the rod between the two ends of the rod.

3. The CPR device of claim 1 , in which the lock component is at a first end of the base member, the first end of the base member being opposite a second end of the base member, and in which, to transition the clamp mechanism from the latch-closed configuration to the latch-open configuration, the clamp mechanism is configured to deflect in a direction toward a middle portion of the base member, the middle portion of the base member being between the first end of the base member and the second end of the base member.

4. The CPR device of claim 1 , in which the release mechanism comprises a pull ring configured to be pulled away from the base member.

5. The CPR device of claim 1 , in which the base member, the support leg, the clamp mechanism, and the release mechanism are made substantially of a radio-translucent material.

6. The CPR device of claim 1 , in which the clamp mechanism is pivotally connected to the support leg, and in which the release mechanism is coupled to the clamp mechanism by the wedge portion of the release mechanism in sliding engagement with the wedge portion of the clamp mechanism.

7. The CPR device of claim 6 , in which the release mechanism comprises:
a pull ring configured to be pulled away from the base member; and
a link portion connecting the pull ring to the wedge portion of the release mechanism, the link portion further comprising a spring tab extending from the link portion, the spring tab configured to contact the support leg and bias the release mechanism toward the base member.

8. The CPR device of claim 7 , in which the link portion further comprises a limiting slot, the limiting slot configured to interact with a protrusion extending from the support leg to limit motion of the release mechanism toward and away from the base member.

9. The CPR device of claim 1 , further comprising a bias element configured to apply a force to the clamp mechanism to bias the clamp mechanism in the latch-closed configuration.

10. A method of connecting the support leg of the cardiopulmonary resuscitation (CPR) device of claim 1 , the method comprising:
connecting the support leg by coupling the support leg of the CPR device to the lock component of the base member of the CPR device with the clamp mechanism, the support leg supporting the chest compression mechanism of the CPR device at the distance from the base member, the base member being configured to be placed underneath a patient, the coupling occurring by impacting the lock component with the external portion of the clamp mechanism and without pulling the release mechanism away from the base member; and
releasing the support leg from the lock component by pulling the release mechanism away from the base member and along the support leg, disengaging the wedge portion of the release mechanism from the wedge portion of the clamp mechanism.

11. The method of claim 10 , in which pulling the release mechanism away from the base member comprises pulling a pull ring away from the base member.

12. The method of claim 10 , the coupling the support leg further comprising deflecting the clamp mechanism in a direction toward a middle portion of the base member, the middle portion of the base member being between a first end of the base member and a second end of the base member opposite the first end of the base member.

13. The method of claim 10 , in which pulling the release mechanism away from the base member comprises pulling the release mechanism away from the base member in a direction substantially parallel to the support leg.

14. A cardiopulmonary resuscitation (CPR) device, comprising:
a base member configured to be placed underneath a patient;
a chest compression mechanism configured to deliver CPR chest compressions to a patient;
a support leg configured to support the chest compression mechanism at a distance from the base member;
a clamp mechanism coupled to the support leg and configured to attach the support leg to a lock component of the base member in a latch-closed configuration of the clamp mechanism and to release the support leg from the lock component in a latch-open configuration of the clamp mechanism; and
a release mechanism coupled to the support leg and the clamp mechanism and configured to be pulled away from the base member and along the support leg to disengage a wedge portion of the release mechanism from a wedge portion of the clamp mechanism and to transition the clamp mechanism from the latch-closed configuration to the latch-open configuration, the release mechanism comprising a link portion connecting a pull ring to the wedge portion of the release mechanism;
in which the clamp mechanism is further configured to transition from the latch-closed configuration to the latch-open configuration when the lock component of the base member impacts an external portion of the clamp mechanism without the release mechanism being pulled away from the base member.

15. The CPR device of claim 14 , in which the link portion further comprises a spring tab extending from the link portion, the spring tab configured to contact the support leg and bias the release mechanism toward the base member.

16. The CPR device of claim 15 , in which the spring tab is configured to impart a counterforce to the release mechanism when the release mechanism is pulled away from the base member to transition the clamp mechanism from the latch-closed configuration to the latch-open configuration.

17. The CPR device of claim 15 , in which the link portion further comprises a second spring tab extending from the link portion, the spring tab and the second spring tab being symmetrical about the link portion.

18. The CPR device of claim 14 , in which the wedge portion of the release mechanism includes an inclined surface configured to interact with the wedge portion of the clamp mechanism.

19. The CPR device of claim 14 , in which the lock component comprises a rod attached to the base member at two ends of the rod, the clamp mechanism attaching to a middle portion of the rod between the two ends

Assignees

• Physio Control Inc

Inventors

• Falk Thomas

Classifications

• A61H31/008 Primary

  Supine patient supports or bases, e.g. improving air-way access to the lungs · CPC title

• A61H1/00 Primary

  Apparatus for passive exercising (A61H5/00 takes precedence); Vibrating apparatus; Chiropractic devices, e.g. body impacting devices, external devices for briefly extending or aligning unbroken bones · CPC title

• A61H1/006

  Apparatus for applying pressure or blows for compressive stressing of a part of the skeletal structure, e.g. for preventing or alleviating osteoporosis · CPC title

• A61H1/008

  Apparatus for applying pressure or blows almost perpendicular to the body or limb axis, e.g. chiropractic devices for repositioning vertebrae, correcting deformation · CPC title

• A61H31/00

  Artificial respiration by a force applied to the chest; Heart stimulation, e.g. heart massage (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 title