# US 7,267,667 B2 · Fluid management system for coronary intervention

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- Number: US 7,267,667 B2
- Document ID: US7267667B2
- Status: Granted
- Kind: B2
- Application number: 10/193,376
- Filed: 2002-07-11
- Published: 2004-01-15
- Granted: 2007-09-11
- Earliest claimed: 2002-07-11
- Assignees: Boston Scientific Scimed, Inc.
- Inventors: Eric Houde; Mark VanDiver; Colin P. Hart; Valerie M. Castora; Kathryn M. Albert
- Web page: https://patentgrep.com/patent/US7267667B2

## CPC

- A61M 5/007: {for contrast media}
- A61M 5/16827: {controlling delivery of multiple fluids, e.g. sequencing, mixing or via separate flow-paths (infusion of multiple fluids without using a controller A61M5/1407)}
- A61M 39/10: Tube connectors or tube couplings
- A61M 39/22: Valves or arrangement of valves {(A61M39/02, A61M39/0247, A61M39/16 take precedence; regulating valves in infusion systems A61M5/16881; in devices worn by the patient for the reception of urine, faeces, catamenial or other discharge, or in colostomy devices A61F5/4405)}
- A61M 2205/3344: Measuring or controlling pressure at the body treatment site
- A61M 2205/3362: with minimised length of fluid lines; Taking into account the elastic expansion of fluid lines to increase accuracy
- A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)}

## Abstract

A fluid injection system is disclosed The system is adapted to employ first and second injectors which may sequentially, or simultaneously, inject first and second fluids into a patient via a catheter. The first and second injectors may be power actuated. The actuation of the injectors may be controlled via a controller of the system. The user may be provided with an operator interface module to enable the control of the system to be affected during operation. A separate waste line may be provided to drain the system effectively and efficiently. A pressure sensor may be provided proximate the catheter to reduce pressure signal wave dampening and fluid waste.

## Claims

### Claim 1

An injection system, comprising:
a first power-actuated injector adapted to inject a first fluid through a first fluid line having a distal end;
a second power-actuated injector adapted to inject a second fluid through a second fluid line having a distal end;
a fitting having first and second inputs and an output, the distal ends of the first and second fluid lines being connected to the first and second inputs of the fitting, respectively;
a medical device connected to the fitting output through a third fluid line; and
a pressure sensor connected to the third fluid line at downstream of the fitting and adapted to generate a signal representative of fluid pressure within the medical device.

### Claim 2 (depends on 1)

The injection system of claim 1, wherein the medical device is a catheter.

### Claim 3 (depends on 1)

The injection system of claim 1, wherein the first fluid is contrast and the second fluid is saline.

### Claim 4 (depends on 1)

The injector system of claim 1, wherein the fining is Y-shaped.

### Claim 5 (depends on 1)

The injection system of claim 1, further including a waste line having a proximal end and a distal end, the distal end being connected to the third fluid line downstream of the fitting.

### Claim 6 (depends on 5)

The injection system of claim 5, further including a waste receptacle connected to the distal end of the waste line and a pump operatively associated with the waste line.

### Claim 7 (depends on 6)

The injection system of claim 6, further including a valve downstream of the distal end of the waste line.

### Claim 8 (depends on 1)

The injection system of claim 1, wherein the pressure sensor is connected to the third fluid line upstream of the medical device.

### Claim 9 (depends on 7)

The injection system of claim 7, further including a medication in communication with the valve.

### Claim 10

A method of injecting fluid into a patient, comprising:
providing a first power-actuated injector adapted to transport a first fluid from a first receptacle through a first fluid line;
providing a second power actuated injector adapted to transport a second fluid from a second receptacle through a second fluid line;
connecting the first and second fluid lines to a single catheter;
providing a pump adapted to transport fluid from the catheter, first fluid line, and second fluid line to a waste receptacle actuating one of the first and second power-actuated injectors; and
monitoring pressure using a transducer mounted proximate the catheter.

### Claim 11 (depends on 10)

The method of claim 10, wherein the first fluid is contrast and the second fluid is saline.

### Claim 12 (depends on 10)

The method of claim 10, wherein the first and second fluid lines are connected using a Y-fitting.

### Claim 13 (depends on 10)

The method of claim 10, further including actuating the first and second injectors simultaneously.

### Claim 14

An injection system, comprising:
a first power-actuated injector;
a second power-actuated injector;
a catheter;
a fitting having an output and first and second inputs, the output being connected to the catheter; the first and second inputs being connected to the first and second injectors;
a waste line and a pump operatively associated with the waste line, the waste line having an input in fluid communication with the fitting
a pressure transducer positioned proximate the catheter and adapted to generate a signal representative of fluid pressure within the catheter; and
a controller adapted to receive signals and generate control signals for actuation of the first and second power actuated injectors.

### Claim 15 (depends on 14)

The injection system of claim 14, further including a source of medication in fluid communication with the catheter.

### Claim 16 (depends on 14)

The injection system of claim 14, further including a source of contrast in fluid communication with the first power-actuated injector; and a source of saline in fluid communication with the second power-actuated injector.

### Claim 17

An injection system, comprising:
an injector;
a medical device;
a fluid line connecting the medical device and the injector;
a waste line and a pump operatively associated with the waste line, the waste line being connected to the fluid line;
a pressure sensor connected to the fluid line downstream of the waste line and adapted to generate a signal representative of fluid pressure within the medical device; and
a controller adapted to receive a signal and generate a control signal for controlling the flow of fluid from the injector.

### Claim 18 (depends on 17)

The injection system of claim 17, wherein the medical device is a catheter.

### Claim 19 (depends on 17)

The injection system of claim 17, further including a power driven actuator connected to a plunger of the injector and wherein the control signal determines movement of the plunger.

### Claim 20 (depends on 17)

The injection system of claim 17, further including a valve operatively associated with an output of the injector; and wherein the control signal determines movement of the valve.

### Claim 21 (depends on 17)

The injection system of claim 17, further including a second injector and a second fluid line, the second fluid line connecting the second injector to the catheter.

### Claim 22 (depends on 21)

The injection system of claim 21, wherein the first injector is fluidically connected to a source of contrast, and wherein the second injector is fluidically connected to a source of saline.

### Claim 23

An injection system, comprising:
a power-actuated injector;
a medical device;
a fluid line connecting the medical device and the injector;
a waste line connected to the fluid line;
a pressure sensor connected to the fluid line downstream of the waste line and adapted to generate a signal representative of fluid pressure within the medical device;
a pump operatively associated with the waste line and adapted to draw fluid from the medical device fluid line and injector;
a second power actuated injector and a second fluid line, the second fluid line connecting the second power actuated injector to the medical device;
and a third fluid line connected to a medication.

### Claim 24 (depends on 23)

The injection system of claim 23, wherein the medical device is a catheter.

### Claim 25 (depends on 23)

The injection system of claim 23, further including a controller adapted to generate signals for operation of the power-actuated injector and pump.