Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Reexamination Certificate
2000-04-03
2001-08-07
Kennedy, Sharon (Department: 3763)
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
C604S122000
Reexamination Certificate
active
06270478
ABSTRACT:
The present invention generally relates to the technical field of infusing a liquid to a patient or person by means of an infusion pump, e.g. at a hospital. The present invention also relates to infusion of liquid to an animal. More precisely, the present invention relates to an infusion pump system and an infusion pump unit of a universal applicable structure for infusing a liquid into a patient or person.
At hospitals or nurse houses, it is often necessary to supply medication or body liquids to a person by means of an infusion pump in which instance the medication or the body liquids are infused into the body of the patient or person in question through a catheter which is connected to the blood transportation system of the patient or person, e.g. a vein or a venule. The usual technique of supplying medication by means of an infusion system to a patient or person involves the supply of physiologic liquid to the patient which physiologic volume is supplied at a specific rate and which serves as a diluting liquid as the medication is supplied to the physiologic liquid also at a specific rate such as one or two drops of medication per time period varying from a second or a few seconds to several minutes or even hours. The medication of a patient or person may in some applications involve the supply of the medication directly to the patient or person by means of the infusion pump.
Numerous infusion pumps and infusion pump systems are know in the art such as from U.S. Pat. No. 4,087,864, U.S. Pat. No. 5,222,946, published international patent application WO821/4399, German published patent application DE-OS 28 32 800, published international patent application WO93/10830, U.S. Pat. No. 5,316,452, U.S. Pat. No. 4,080,967, U.S. Pat. No. 3,990,444, published British patent application GB 2,009,453, U.S. Pat. No. 4,443,216, U.S. Pat. No. 4,447,233, U.S. Pat. No. 5,167,631, U.S. Pat. No. 5,472,317, European patent No. 0 553 313, Danish patent 153,587 and Danish patent 167,037. Reference is made to the above published patent applications and patents and the above mentioned U.S. patents are hereby further incorporated in the present specification by reference.
Generally, the prior art infusion pumps are adapted to provide a specific function such as supplying a specific amount of liquid at a fixed rate. Also the prior art infusion pump systems generally constitute stand-alone apparatuses which are configurated as main supply apparatuses or alternatively battery powered apparatuses necessitating that a patient which is presently lying in a bed and receives medication by means of a main powered infusion pump needs to have the infusion pump substituted or at least disconnected from the main supply for a period of time provided the patient or person is to be moved from one location to another e.g. within the hospital or has to have the main powered infusion pumps substituted by a battery powered infusion pump provided the patient from being lying in the bed is to move around for exercising.
It is an object of the present invention to provide an infusion pump system allowing the patient or person using the infusion pump system according to the present invention to shift from a position sitting or lying in a bed and move around without necessitating the substitution or shift of the stationary infusion pump to a portable infusion pump as the infusion pump system according to the present invention constitutes a universally applicable or combined portable and stationary infusion pump system.
An advantage of the present invention relates to the fact that the infusion pump system according to the present invention may be used in different pumping modes as the infusion pump system includes several programmes for different operational modes and further preferably includes input means for input of different operational programmes.
The above object, the above advantage together with numerous other objects, advantages and features which will be evident from the below detailed description of presently preferred embodiments of the infusion pump system according to the present invention are in accordance with the teachings of the present invention obtained by an infusion pump system comprising:
at least one infusion pump unit, comprising:
a housing of a size allowing said infusion pump unit to be carried by a user as a portable infusion pump unit, said housing defining an exterior surface,
a fluid inlet provided accessibly at said exterior surface for establishing fluid communication from an external infusion bag to said fluid inlet,
a fluid outlet provided accessibly at said exterior surface for establishing fluid communication to an infusion site,
a controllable pumping system included within said housing and having an inlet and an outlet, said inlet being connected to said fluid inlet and said outlet being connected to said fluid outlet for allowing transfer of fluid from said fluid inlet to said fluid outlet through activating said controllable pumping system,
a first check valve provided at said inlet of said controllable pumping system,
a second check valve provided at said outlet of said controllable pumping system,
an electronic control means received within said housing for controlling the operation of said controllable pumping system, said electronic control means including at least two preset pumping programs for allowing said controllable pumping system to be controlled in at least two alternative infusion pumping operations, and
a power supply unit housed within said housing for supplying power to said controllable pumping system and to said electronic control means and connectible through exterior terminals provided at said exterior surface of said housing to external electric energy supply means,
a stationary receptor system including:
a receptor means for receiving and fixating said at least one infusion pump unit therein so as to maintain said at least one infusion pump unit in a stationary mode and exposing said fluid inlet and fluid outlet of said at least one infusion pump unit for allowing access thereto, and
a mains supply unit for receiving electric energy from the mains supply and having terminals connectible to said exterior terminals for supplying said electric energy to said power supply unit of said at least one infusion pump unit, said mains supply unit constituting said external electric supply means.
According to the basic realization of the present invention, the infusion pump system according to the present invention comprises an infusion pump unit including a power supply unit for supplying electric power to the controllable pumping system of the infusion pump unit and further a stationary receptor means system including a main supply unit for supplying electric energy from the main supply to the power supply unit of the infusion pump unit. According to the basic teachings of the present invention, the controllable pumping system of the infusion pump unit includes electronic control means allowing the controllable pumping system to be operated in accordance with at least two different preset pumping programmes for modifying the operation of the infusion pump unit to a specific application.
The infusion pump unit of the infusion pump system according to the present invention may in accordance with the presently preferred embodiment of the infusion pump system according to the present invention be embodied as a microprocessor based infusion pump unit. Consequently, the electronic control means of the infusion pump unit may according to the presently preferred embodiment be constituted by a microprocessor control means allowing the microprocessor control means to firstly control the controllable pumping system and secondly control the overall operation of the infusion pump unit including the power supply unit. The microprocessor based infusion pump unit of the infusion pump system according to the present invention preferably further comprises a display means included in the electronic control means for displaying the operational mode of the infusion pump unit and further
Kennedy Sharon
Klein & Szekeres LLP
Lam Ann Y.
LandOfFree
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