A fluid flow control valve includes a valve body with a fluid flow lumen therethrough and a valve member located within the fluid flow lumen. At least one of the valve body and valve member is resilient and respectively sized for movement between a normally closed position in which the valve member and a fluid lumen surface are in sufficient annular contact to block fluid flow through the fluid flow lumen and an open position in which at least one of the valve body and valve member flexes to a spaced apart position that allows fluid flow between them. Downstream fluid pressure may contact the valve body to enhance sealing. A fluid absorbent member may also be employed with the valve body. Flow control devices, such as medical fluid injection devices, and methods may employ this valve.

Systems and methods for determining the position of a fluid within a fluid source and infusion line coupled to an infusion flow control device are described herein. An exemplary system and method includes sampling fluid pressure upstream of an infusion pump, and calculating fluid pressure slope profiles. By sampling fluid pressure upstream of an infusion pump at discrete intervals and monitoring fluid pressure slope profiles, conditions of fluid flow, including unintentional fluid flow through an infusion line or a defective check valve in an infusion line, are detected, and fluid flow through an infusion pump is controlled.

Infusion devices and methods are provided for a drug delivery system and can include an infusion needle (1) having a tip end (2) and a drive unit (D) coupled to the infusion needle and arranged for advancing the tip end of the infusion needle to penetrate any fibrosis when the infusion device is implanted in a patient's body. The infusion needle and drive unit are designed for implantation in a patient's body. Other components of the drug delivery system may be part of the implantable infusion device or, alternatively, be for extracorporal use cooperating with the implanted infusion device. Preferably, the infusion needle can be advanced and retracted with each infusion cycle. Furthermore, upon each advancement and/or retraction, the needle may be moved laterally so as to vary the injection site. Needle (1) and drive unit (D) are preferably disposed within a body (15), with the infusion needle being arranged for penetrating a self-sealing penetration membrane (18).

A medical fluid injector is connected to a supply tube through which medical fluid is supplied and a discharge tube through which the medical fluid is discharged. The medical fluid injector has a housing body and a reservoir module which is disposed within the housing body. The housing body has a grip portion, which has a length in the longitudinal direction that is greater than a width in a direction orthogonal to the longitudinal direction, and a pair of button protection arms located at one end adjacent to the grip portion. The reservoir module has a reservoir bag, which stores and discharges the medical fluid, and a push button which pushes the reservoir bag to discharge the medical fluid in the reservoir bag. The reservoir bag is fluidically connected to the supply tube and the discharge tube. A portion of the push button is positioned between the button protection arms.

A flow controller having an internal tubing is provided. The flow controller may include an upper housing having a plurality of graduations, a lower housing engaged with and slidably coupled to the lower housing, and a cavity defined between the upper and lower housings for accommodating at least a portion of internal tubing. The flow controller may further include a flexible clamp having an upper section mounted in the upper housing and a lower section slidably disposed in the lower housing. The upper and lower housings may be slidably coupled relative to each other to transition the internal tubing from (i) an open position where a lumen of the internal tubing is uncompressed by the flexible clamp to (ii) a closed position where the lumen of the tubing is at least partially constricted by the flexible clamp.

An implantable fluid operated inflatable device may include a fluid reservoir configured to hold fluid, an inflatable member, and fluidics architecture that provides for transfer of fluid between the fluid reservoir and the inflatable member. The fluid reservoir, the inflatable member, and the fluidics architecture may be included in a single unit, or a single housing, thus providing for a relatively compact implantable fluid operated inflatable device. The relatively simple, compact device provides for simplified insertion into the patient, and for simplified operation by the user.

An infusion height warning and blocking device for an infusion stand is provided. The infusion height warning and blocking device includes a communication module for receiving at least one sensing signal from at least one gravity sensor; and a processing unit for calculating an infusion height difference between a start position and a usage position according to the at least one sensing signal, and generating at least one height indication signal according to the infusion height difference and at least one height difference threshold.

The invention relates to a device for the dosed dispensing of an infusion fluid, in particular for administering an infusion for a patient, comprising a fluid vessel for accommodating the infusion fluid, and comprising an infusion line which is arranged between the fluid vessel and a patient access during the use of the device, wherein the fluid vessel and the infusion line are connected to one another, and the infusion line is designed such that at least a sub-section of the infusion line has a predefined inner diameter and a predefined length, such that the amount of infusion fluid accommodated in the fluid vessel is dispensed to the patient access over a predetermined time period in a manner dependent on a predefined height at which the fluid vessel is arranged above the patient access.

A flow controller is provided. The flow controller includes an upper housing, a lower housing slidably coupled to the upper housing, and a flexible clamp. The flexible clamp includes an upper section mounted in the upper housing, a lower section disposed in the lower housing, a first curved flexible member coupled between the upper section and the lower section, and a second curved flexible member coupled between the upper section and the lower section. The upper and lower housings are slidably coupled linearly and without rotation relative to each other, and the flexible clamp is configured to receive a flexible tube between the first and second curved flexible members and between the upper and lower sections.

Infusion devices and methods are provided for a drug delivery system and can include an infusion needle (1) having a tip end (2) and a drive unit (D) coupled to the infusion needle and arranged for advancing the tip end of the infusion needle to penetrate any fibrosis when the infusion device is implanted in a patient's body. The infusion needle and drive unit are designed for implantation in a patient's body. Other components of the drug delivery system may be part of the implantable infusion device or, alternatively, be for extracorporal use cooperating with the implanted infusion device. Preferably, the infusion needle can be advanced and retracted with each infusion cycle. Furthermore, upon each advancement and/or retraction, the needle may be moved laterally so as to vary the injection site. Needle (1) and drive unit (D) are preferably disposed within a body (15), with the infusion needle being arranged for penetrating a self-sealing penetration membrane (18).