# US 9,517,176 B2 · Cross action chest compression apparatus for cardiac arrest

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- Number: US 9,517,176 B2
- Document ID: US9517176B2
- Status: Granted
- Kind: B2
- Application number: 12/004,004
- Filed: 2007-12-19
- Published: 2009-04-09
- Granted: 2016-12-13
- Earliest claimed: 2007-12-19
- Applicants: Thomas E. Lach
- Inventors: Thomas E. Lach
- Web page: https://patentgrep.com/patent/US9517176B2

## CPC

- A61H 31/005: {with feedback for the user}
- A61H 31/007: {Manual driven}
- A61H 31/008: {Supine patient supports or bases, e.g. improving air-way access to the lungs}
- A61H 2031/001: {fixed on the chest by suction}
- A61H 2031/002: {fixed on the chest by adhesives}
- A61H 2031/003: {with alternated thorax decompression due to lateral compression}
- A61H 2201/018: By limiting the applied torque or force
- A61H 2201/5007: computer controlled
- A61H 2201/5043: Displays
- A61H 2201/5048: Audio interfaces, e.g. voice or music controlled
- A61H 2201/5061: Force sensors
- A61H 2201/5071: Pressure sensors
- A61H 2230/04: Heartbeat characteristics, e.g. E.G.C., blood pressure modulation
- A61H: PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY (electrotherapy, magnetotherapy, radiation therapy or ultrasound therapy A61N)

## Abstract

Manual CPR apparatus allowing the application of force at two points separated by a line making a nonperpendicular angle relative to the longitudinal axis of the patient. The line separating the two force points may also lie out of the plane formed by the device's belt which circumnavigates the patient's torso. These geometrical configurations allow the facile application of the CPR force to the device by one or more operators located along the side of the patient. The device may have the capability to limit the achieved circular chest compression to one of a plurality of magnitudes. The device may also provide signals to indicate the appropriate times for applying pressure and may incorporate electrocardiogram and defibrillation components. The device may contact the patient's chest with a suction cup or other adhering component to assist in the patient's chest expanding in the interval between compressive strokes.

## Claims

### Claim 1

An apparatus for increasing the flow of blood in a patient, the apparatus comprising:
(A) a base contoured to seat near a central region of a patient's chest;
(B) an actuator;
(C) a substantially inelastic belt configured to wrap around said patient's chest substantially in a plane; and
(D) a force converter, mounted on said base, coupled to said actuator, and having belt connectors coupled to opposite extremities of said belt with said belt substantially in said plane, converting into belt tightening resultants applied to said belt connectors directed substantially tangentially to said chest a force manually applied to said actuator by a person placing two hands at two spatially separated points along a line making a nonzero angle to said plane and directed toward said chest, said force converter providing a substantially predefined, substantially linear path generally toward said chest for said two points to move along as said force is manually applied to said actuator at said two points.

### Claim 2 (depends on 1)

The apparatus of claim 1 wherein said line is substantially perpendicular to said plane.

### Claim 3 (depends on 1)

The apparatus of claim 1 wherein said patient has a torso with a longitudinal axis and wherein said line lies substantially parallel to said longitudinal axis of said torso of said patient.

### Claim 4 (depends on 1)

The apparatus of claim 1 wherein said linear path is substantially straight.

### Claim 5 (depends on 4)

The apparatus of claim 4 wherein said linear path is directed substantially towards the center of said chest.

### Claim 6 (depends on 1)

The apparatus of claim 1 wherein said actuator includes an elongated, substantially rigid element connecting said two points, said force converter includes a generally elongated slot defining said substantially predefined, linear path, and said element moves in said slot as said force is applied to said actuator toward said chest.

### Claim 7 (depends on 6)

The apparatus of claim 6 wherein said linear path is substantially straight.

### Claim 8 (depends on 7)

The apparatus of claim 7 wherein said linear path is directed substantially towards the center of said chest.

### Claim 9

An apparatus for increasing the flow of blood in a patient, the apparatus comprising:
(A) a base contoured to seat near a central region of a patient's chest;
(B) an actuator;
(C) a substantially inelastic belt means configured to wrap around said patient's chest; and
(D) a force converter, mounted on said base, coupled to said actuator, and having belt connectors coupled to opposite extremities of said belt, said opposite extremities of said belt, when coupled to said converter, substantially forming a first line, for converting into belt tightening resultants applied to said belt connectors directed substantially tangentially to said chest a force manually applied to said actuator applied by a person placing two hands at two spatially separated points along a second line not substantially parallel to said first line and directed toward said chest, said force converter providing a substantially predefined, substantially linear path generally toward said chest for said two points to move along as said force is manually applied to said actuator at said two points.

### Claim 10 (depends on 9)

The apparatus of claim 9 wherein said first line is substantially perpendicular to said second line.

### Claim 11 (depends on 9)

The apparatus of claim 9 wherein said patient has a torso with a longitudinal axis and wherein said second line lies substantially parallel to said longitudinal axis of said torso of said patient.

### Claim 12 (depends on 9)

The apparatus of claim 9 wherein said linear path is substantially straight.

### Claim 13 (depends on 12)

The apparatus of claim 12 wherein said linear path is directed substantially towards the center of said chest.

### Claim 14 (depends on 9)

The apparatus of claim 9 wherein said actuator includes an elongated, substantially rigid element connecting said two points, said force converter includes a generally elongated slot defining said substantially predefined, linear path, and said element moves in said slot as said force is applied to said actuator toward said chest.

### Claim 15 (depends on 14)

The apparatus of claim 14 wherein said linear path is substantially straight.

### Claim 16 (depends on 15)

The apparatus of claim 15 wherein said linear path is directed substantially towards the center of said chest.

### Claim 17

A method of CPR treating a patient comprising:
(A) seating a base of a blood flow increasing apparatus on a patient's chest near a central region of said chest;
(B) wrapping a belt with first and second opposite extremities around said patient's chest, with said belt substantially forming a plane;
(C) fastening to said apparatus any of said extremities of said belt not already fastened to said apparatus, with said belt substantially forming a plane;
(D) manually applying by placing two hands at two spatially separated points along a line making a nonzero angle with said plane, a force, directed toward said chest, to an actuator coupled to a converter coupled to said base and said belt; and
(E) converting said force into belt tightening resultants directed substantially tangentially to said chest, and
(F) limiting the movement of of said two points to a substantially predefined, substantially linear path generally toward said chest as said force is manually applied to said actuator at said two points and directed toward said chest.

### Claim 18 (depends on 17)

The method of claim 17 wherein said line is substantially perpendicular to said plane.

### Claim 19 (depends on 17)

The method of claim 17 wherein said patient has a torso with a longitudinal axis and wherein said line lies substantially parallel to said longitudinal axis of said torso of said patient.

### Claim 20 (depends on 17)

The method of claim 17 wherein said linear path is substantially straight.

### Claim 21 (depends on 20)

The method of claim 20 wherein said linear path is directed substantially towards the center of said chest.

### Claim 22

A method of CPR treating a patient comprising:
(A) seating a base of a blood flow increasing apparatus on a patient's chest near a central region of said chest;
(B) wrapping a belt with first and second opposite extremities around said patient's chest with said first and second extremities being separated from each other and substantially lying along a first line;
(C) fastening to said apparatus any of said extremities of said belt not already fastened to said apparatus with said first and second extremities substantially lying along said first line;
(D) manually applying a force, by placing two hands at two spatially separated points along a second line not substantially parallel to said first line and directed toward said chest, to an actuator coupled to a converter coupled to said base and said belt; and
(E) converting said force into belt tightening resultants directed substantially tangentially to said chest; and
(F) limiting the movement of of said two points to a substantially predefined, substantially linear path generally toward said chest as said force is manually applied to said actuator at said two points and directed toward said chest.

### Claim 23 (depends on 22)

The method of claim 22 wherein said first line is substantially perpendicular to said second line.

### Claim 24 (depends on 22)

The method of claim 22 wherein said patient has a torso with a longitudinal axis and wherein said second line lies substantially parallel to said longitudinal axis of said torso of said patient.

### Claim 25 (depends on 22)

The method of claim 22 wherein said linear path is substantially straight.

### Claim 26 (depends on 25)

The method of claim 25 wherein said linear path is directed substantially towards the center of said chest.