Mechanical compression device with adjustable compression point

Patent metadata

Field	Value
Publication number	US-2022125676-A1
Application number	US-202117510266-A
Country	US
Kind code	A1
Filing date	Oct 25, 2021
Priority date	Oct 26, 2020
Publication date	Apr 28, 2022
Grant date	—

Abstract

Examples of the disclosure are directed to mechanical compression devices that can adjust a location of a compression position relative to a patient. One or more of the mechanical compression devices can adjust the compression position in an adjustment plane that is generally perpendicular to a patient. Some of the mechanical compression include support columns that have actuators that can be set asymmetrically to adjust the compression position and/or can be tilted relative to the backboard to adjust the compression position. Other examples includes mechanical compression devices that have multiple actuators that can be used to adjust the compression position as well as provide compressions.

First claim

I (or we) claim:

1 . A mechanical compression device, comprising:
a retention structure to retain a body of a patient, the retention structure including a backboard and two legs; a compression member including a piston; and an adjustment mechanism coupled to the compression member and the retention structure, the adjustment mechanism having a shape defining an adjustment plane having an x-axis and a y-axis and a plurality of guide rods attached to the compression member to position the compression member in the adjustment plane.

2 . The mechanical compression device of claim 1 , wherein the adjustment mechanism is driven manually by a user.

3 . The mechanical compression device of claim 1 , wherein the adjustment mechanism further includes a driver configured to drive the plurality of guide rods, and the mechanical compression device further includes a processor configured to:
receive a compression position for the piston, the compression position including an x-axis position and a y-axis position in the adjustment plane, and control the driver to drive the plurality of guide rods to position the piston within the adjustment plane at a location specified by the compression position.

4 . The mechanical compression device of claim 3 , further comprising an input configured to receive a physiological signal from the patient, wherein the processor is further configured to determine the compression piston based on the physiological signal.

5 . The mechanical compression device of claim 1 , further comprising:
an input configured to receive a physiological signal from the patient; and a processor configured to determine a compression position based on the physiological signal; and an output configured to communicate the compression position to a rescuer.

6 . The mechanical compression device of claim 1 , wherein each leg includes at least one actuator coupled to the compression member and configured to cause the compression member to compress the patient.

7 . The mechanical compression device of claim 6 , wherein the at least one actuator in each leg includes a starting position, wherein the starting position of each actuator is not symmetrical to cause the compression member to compress the patient at an angle.

8 . The mechanical compression device of claim 7 , wherein the compression member includes a joint between a piston and a suction cup.

9 . A mechanical compression device, comprising:
a back plate; and a support frame attached to the back plate, the support frame including:
a first support column having a first actuator,
a second support column having a second actuator, and
one or more drivers configured to drive the at least one actuator of the first support column and the at least one actuator of the second support column, and a compression beam attached to the at least one actuator of each of the first support column and the second support column, the compression beam having a compression member; and a processor configured to:
set a starting position of the compression beam by independently adjusting a start position of the first actuator and the second actuator, and
drive the compression beam to provide compressions to a patient from the respective starting position of each of the first actuator and the second actuator.

10 . The mechanical compression device of claim 9 , wherein the start position of the first actuator and the start position of the second actuator are not symmetrical.

11 . The mechanical compression device of claim 10 , wherein the compression beam is driven to provide a compression to the patient at an angle.

12 . The mechanical compression device of claim 10 , wherein the start position of the first actuator and the start position of the second actuator are set such that a centerline of the compression member is offset from a centerline of the mechanical compression device.

13 . The mechanical compression device of claim 9 , wherein the first support leg and the second support leg are tiltable relative to the back plate.

14 . The mechanical compression device of claim 13 , wherein the first support leg and the second support leg each include a second actuator configured to tilt the first support leg and the second support leg.

15 . The mechanical compression device of claim 9 , wherein the compression member is laterally slidable relative to the compression beam.

16 . The mechanical compression device of claim 9 , wherein the compression member includes a joint between a piston and a suction cup.

17 . A mechanical compression device, comprising:
a base unit; a compression member; a plurality of stands, each stand extending vertically from the base unit and each stand having:
a first actuator attached to a first position of a respective stand and to the compression member, and
a second actuator attached to a second position of the respective stand and to the compression member; and
a controller configured to drive the first actuator and the second actuator of each leg simultaneously to compress a patient.

18 . The mechanical compression device of claim 17 , wherein the controller is further configured to drive the first actuator of each leg to adjust a compression position of the compression member within a plane that is parallel to a chest of a patient and, when the compression position of the compression member is set, drive the second actuator of each leg to compress the chest of the patient.

19 . The mechanical compression device of claim 18 , wherein the controller is configured to drive the first actuator of each leg independently.

20 . The mechanical compression device of claim 19 , further comprising an input configured to receive a physiological signal from the patient.

21 . The mechanical compression device of claim 20 , wherein the controller is configured to determine the compression position based on the physiological signal.

22 . A mechanical compression device, comprising a compression mechanism, the compression mechanism including:
a piston, the piston having a longitudinal centerline; a suction cup at an end of the piston, the suction cup having a centerline; and a fine-tuning mechanism, the fine-tuning mechanism configured to couple the piston to the suction cup and to permit the piston to move between a first configuration, where the longitudinal centerline of the piston is substantially coextensive with the centerline of the suction cup, and a second configuration, where the longitudinal centerline of the piston is substantially offset from and parallel to the centerline of the suction cup, without uncoupling the piston from the suction cup.

23 . The mechanical compression device of claim 22 , in which the fine-tuning mechanism comprises a disk configured to rotate relative to a carrier, the carrier configured to retain the disk and to permit the disk to rotate relative to the carrier to move the piston from the first configuration to the second configuration.

24 . The mechanical compression device of claim 22 , in which the fine-tuning mechanism comprises a wheel having an axis substantially coextensive with the centerline of the piston, the wheel being constrained to roll around an inner diameter of a carrier, in which an axis of the inner diameter of the carrier is substantially coextensive with the centerline of the suction cup.

25 . The mechanical compression device of claim 24 , in whi

Assignees

• Physio Control Inc

Inventors

• Ehrstedt Marcus
• Falk Thomas
• Jeppsson Anders
• Lagerstrom Jonas
• Taylor Tyson
• Walker Robert G
• Segerstein Jorgen
• Marx Jr Robert P

Classifications

• A61H2201/1623

  Back · CPC title

• A61H2201/0196

  automatically adjusted according to anthropometric data of the user · CPC title

• A61H31/008

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

• A61H31/005 Primary

  with feedback for the user · CPC title

• A61H2201/1619

  Thorax · CPC title