摘要:
Disclosed herein is a fluid infusion device of the type that delivers medication fluid to the body of a patient. The device includes or cooperates with a fluid reservoir, and the device has a sealing assembly to receive and form a fluid seal with the fluid reservoir. A retractable sealing element surrounding a hollow fluid delivery needle may be used to seal a port of the fluid reservoir. The port may include a pressure vent that is sealed by the retractable sealing element. In one variation, the reservoir includes a moving valve sleeve that holds a septum. The septum moves to allow the reservoir to vent, and to form a seal with the port when the needle pierces the septum. In another variation, the device includes a needleless sealing assembly. In yet other variations, the device uses a needled fluid reservoir.
摘要:
Disclosed herein is a fluid infusion device of the type that delivers medication fluid to the body of a patient. The device includes or cooperates with a fluid reservoir, and the device has a sealing assembly to receive and form a fluid seal with the fluid reservoir. A retractable sealing element surrounding a hollow fluid delivery needle may be used to seal a port of the fluid reservoir. The port may include a pressure vent that is sealed by the retractable sealing element. In one variation, the reservoir includes a moving valve sleeve that holds a septum. The septum moves to allow the reservoir to vent, and to form a seal with the port when the needle pierces the septum. In another variation, the device includes a needleless sealing assembly. In yet other variations, the device uses a needled fluid reservoir.
摘要:
A system for retaining a fluid delivery device, the fluid delivery device may include a reservoir and a plunger arm operatively connected to a plunger head arranged for movement within the reservoir, the plunger arm having an arm portion operatively engageable with a drive member configured to move the plunger arm and the plunger head when the plunger arm and the plunger head are connected to the drive member. The system may include a rigid member arranged for movement and a bias member configured to urge the rigid member toward the plunger arm to force the plunger arm against the drive member to operatively engage the plunger arm to the drive member.
摘要:
Needle inserting devices, as well as fluid flow connections and infusion medium delivery systems and methods that may be used with needle inserting devices are described, for medical or non-medical systems, such as, but not limited to sensors, monitors, or the like. The needle inserting device and method may operate to insert a needle or cannula through a patient-user's skin, for example, to provide a fluid flow path for conveying an infusion medium through a hollow channel in the needle or cannula and into the patient-user and/or to convey a fluid from the patient-user to one or more sensor elements. Embodiments of the present invention may be configured, as described herein, to provide a reliable, cost effective and easy-to-use mechanism for inserting a needle or cannula to a specific depth into a patient-user with minimal traumatic effect. In some embodiments, a mechanical force in a first direction results in a needle insertion at a non-zero angle relative to the first direction. In other embodiments, a needle inserter is configured with rotary parts for minimizing the rotation of a needle during insertion.
摘要:
A plunger head moveable in an axial direction within a reservoir having an interior volume for containing fluidic media may have a first portion in contact with fluidic media when fluidic media is in the interior volume of the reservoir, the first portion comprising a first material compatible with fluidic media in the interior volume of the reservoir, a second portion located on an opposite side of the plunger head from the interior volume of the reservoir, the second portion connectable to a plunger arm, and a third portion located between the first portion and the second portion of the plunger head, at least one of the first portion, second portion, and the third portion is made of a material that comprises one of a cyclic olefin copolymer and a cyclic olefin polymer.
摘要:
At least one tab may extend through at least one opening in a retaining member configured to cover at least a portion of a head of a reservoir body and a portion of a septum supported by the head of the reservoir body. A retaining member may be configured to cover at least a portion of a first head of a reservoir body and a portion of a septum supported by the first head of the reservoir body, and the reservoir body may have a second head having at least one tab. A retaining member located in a head of a reservoir body may be for retaining a septum on the head of the reservoir body, and the head of the reservoir body may have at least one tab.
摘要:
Various embodiments of the present invention are directed to equalizing pressure in a reservoir containing fluidic media, possibly due to imperfect installation of the reservoir or an external influence such as an altitude or a temperature change. In various embodiments, fluidic media may be expelled from the reservoir through a needle and contained in an interior volume of a pierceable member before the needle pierces the pierceable member to establish a flow path to a user. In other embodiments, fluidic media may be expelled through a port of the reservoir into a chamber. In further embodiments, fluidic media may be expelled through a channel in a plunger head and out a passage in the reservoir when the channel and passage are aligned. In other embodiments, fluidic media may be expelled through a valve, and the valve may be pierceable by a needle to establish a flow path to the user.
摘要:
A connector assembly located at the proximal end of an elongated lead body includes first and second electrical contacts, each attached to a respective one of at least two conductors. An interlocking construction positively joins the first and second electrical contacts and maintains a fixed axial spacing therebetween. The first connector includes a connector pin having a head portion at an extremity thereof and an integral and coaxial tail portion and the second connector includes a connector ring coaxial with and telescopingly received on the tail portion. An electrically insulative male joint member integral with the tail portion is selectively lockingly engageable with a female joint member integral with the connector ring. Diametrically opposed knob members project radially from an outer peripheral surface of the male joint member and slidably engage a pair of diametrically opposed longitudinal slots in an integral axial sleeve extending proximally from the second electrical contact, the longitudinal slots terminating at a pair of oppositely extending circumferential slots. The electrical contacts are positively joined by axially aligning the connector pin and the connector ring while spaced apart, then advancing on axis the tail portion of the connector pin toward the connector ring so that the outer peripheral surface of the male joint member is fittingly engaged with the inner peripheral surface of the axial sleeve and so that the knob members are slidably engaged with the longitudinal slots, then rotating the tail portion so that the knob members are slidably engaged with the circumferential slots.