US 7,662,124 B2Granted

System and method for multiple injection procedures on heart vessels

AssigneeACIST Medical Systems, Inc.

InventorsDouglas J. Duchon, James P. Smith, Katherine H. Anderson, Robert F. Wilson, Jiyan Liu

Life of this patent

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Abstract

An angiographic injector system and a method of controllably delivering medical fluid to a patient from an angiographic injector system are disclosed. A multiple processor control system is used to actively control the injection process and to monitor sensed functions of the system. The multiple processors provide dual redundancy safety circuits for critical control functions such as syringe motor drive speed and current. A motor/servo-amplifier nested control function is also disclosed. A unique method and apparatus are disclosed for establishing injection parameter default values just prior to an injection procedure that are based on physiological values of the patient to be treated. The injector system uses an interactive display panel that presents sequenced set-up screens to the user and which enables the user to select injection procedures, parameters and other modes of operation directly through the interactive panel.

Claims19

Dependent claims

A device for injecting angiographic fluid into a patient comprising:

an actuator assembly having an axially movable shaft;
a receptacle axially aligned with and positioned adjacent to said actuator assembly, said receptacle sized to receive a syringe;
a syringe insertable into said receptacle, said syringe having a movable plunger aligned with and engageable to said movable shaft when said syringe is located in said receptacle;
a motor linked to said movable shaft such that energization of said motor causes motion of said movable shaft into and out of said syringe;
a control system operably connected to said motor for causing movement of said movable shaft;
said control system adapted to allow a user to select an injection routine from two or more injection routines, each of the two or more injection routines being dedicated to a different injection procedure for a vessel of a heart of a patient, said control system being further adapted to allow said user to input a numerical patient characteristic value;
said control system having a control console, said control console having a selector for selecting one of said injection routines;
said control system having a motor circuit directing the speed of said motor according to input data from said user;
said control system including a remote switch device connected to said control system providing user input data to said motor circuit;
and,
said control system including a routine enabling operability of said switch device during injection of fluid into said patient so as to enable continuously variable changes to said motor speed during said injection according to manipulation of said switch by said user,
wherein said control system automatically determines default injection parameters based upon
(a) the injection routine selected by the user, and
(b) the numerical patient characteristic value input by the user, and
wherein said default injection parameters include at least one of a flow rate limit, a volume limit, a maximum rise time and a pressure limit, said limits being automatically determined as a function of said numerical patient characteristic value and said selected injection routine.

12 more elements

A method for injecting angiographic fluid into a patient comprising:

providing an injector system having an actuator assembly and a receptacle for receiving a syringe;
installing said syringe into said receptacle;
moving a shaft of said actuator assembly to contact a plunger of said syringe;
causing movement of said shaft with a motor, said motor being in operable communication with a control system;
viewing a control console connected with said control system;
selecting an injection procedure from a plurality of different injection procedures offered on said control console, each of said injection procedures being for an injection on a vessel of a heart of a patient;
initiating a fluid injection procedure on a patient based on user input data submitted to said control system;
and,
performing a routine in said control system so as to allow continuously variable changes in a speed of said shaft during an injection, said changes being performed according to changes in input data from said user,
wherein default injection parameters are automatically determined based upon
(a) the injection procedure selected, and
(b) a numerical patient characteristic value associated with a condition of the patient to be treated, and
wherein said default injection parameters include at least one of a flow rate limit, a volume limit, a maximum rise time and a pressure limit, said limits being automatically determined as a function of said numerical patient characteristic value and said selected injection routine.

10 more elements

Dependencies are inferred from the claim text.

Facts

Application: 10/123,956Filed 16 Apr 2002 · division
Priority: 20 Apr 1995
Published: US 2002/0198496 A126 Dec 2002
Granted: 16 Feb 2010
Term ends: Not estimatedThe source records don’t support an estimate.

Classification20 codes

A61B 6/504
Specially adapted for specific body parts; specially adapted for specific clinical applications: for diagnosis of blood vessels, e.g. by angiography
A61B 6/481
Diagnostic techniques: involving the use of contrast agents
A61M 5/007
Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning…:…
A61M 5/14216
Pumping with an aspiration and an expulsion action: reciprocating piston type

Family

Application08/426,148Parent of this continuation · filed 20 Apr 1995
Application08/946,293Parent of this continuation-in-part · filed 7 Oct 1997
Application08/957,801Parent of this continuation-in-part · filed 24 Oct 1997
Application08/966,088Parent of this division · filed 7 Nov 1997
US 2002/0198496 A1Pre-grant publication · published 26 Dec 2002
US 7,267,666 B1Parent of this division
US 6,221,045 B1Parent of this continuation-in-part
Application08/966,088Parent of this continuation-in-part
US 5,800,397 AParent of this continuation-in-part
Application08/946,293Parent of this continuation
US 7,662,124 B2This patent

From the US filing history. Foreign family members aren’t listed.