Abstract: A valve (10) comprises a housing (12) with a valve element (14) which normally fluidicly couples a low pressure operating device, such as a transducer (30) and tubing (34) to be coupled to a patient (36) along a first flow path (42) including a flexible control wall (58) which normally interrupts a second flow path (72) between a high pressure generating source such as an injector syringe (32) and the tubing (34), but which flexes, in response to high pressure excursions from the syringe (32) to allow the second flow path (72) to open as it flexes into the first flow path (42) to thereby restrict same thus providing protection to the transducer (30) during the high pressure excursion from the syringe (32).

Abstract: A contrast dispensing system (10) reduces cost by directly connecting a check valve (210) to and between the reservoir inlet port (220) and the mating luer connector (204) of a disposable set (200). A contrast dispensing system (10) includes as part of the reservoir (212) an integrally molded cap (280) having the inlet port (200) and a lateral pipe (300) to confine contrast media (14) therein and disperse it at separate locations (334, 336) within the chamber (260) of reservoir (212). The reservoir (212) may have a vent port (284) with a flip cap (294) for selectively opening or closing same.

Abstract: A contrast dispensing system (10) including a mating pair of luer connectors (112, 202) to couple a reusable set (100) and a disposable set (200), a mating pair of luer connectors (204, 218) to couple the disposable set (200) to a manifold (16), a pair of luer connectors (230, 232) to couple a control syringe (18) to the manifold (16), and/or a pair of luer connectors (234, 236) to couple the manifold (16) to a patient catheter (238), wherein one or both of the connectors of a pair of coupled connectors (112, 202; 204, 218; 230, 232; 234, 236) is comprised of low surface energy plastic material, such as high density polyethelene, to reduce or eliminate sticking together from expelled (312) contrast media (14).

Abstract: A contrast dispensing system (10) reduces cost by directly connecting a check valve (210) to and between the reservoir inlet port (220) and the mating luer connector (204) of a disposable set (200). A contrast dispensing system (10) includes as part of the reservoir (212) an integrally molded cap (280) having the inlet port (220) and a lateral pipe (300) to confine contrast media (14) therein and disperse it at separate locations (334, 336) within the chamber (260) of reservoir (212). The reservoir (212) may have a vent port (284) with a flip cap (294) for selectively opening or closing same.

Abstract: A medical pressure transducer includes a reusable component with channels to either side of a reusable diaphragm, and a disposable dome with mounting wings to either side of a disposable diaphragm and slidably receivable in the channels to mount the dome with the diaphragms in confronting relationship. Stand-off bumps are provided on the wings which cooperate with support surfaces on the reusable component in the channel to keep the dome and reusable diaphragms sufficiently spaced apart as to minimize deleterious wear thereon when the dome and reusable component are put together and/or taken apart. Dimples may be provided in the support surface to receive the bumps when the diaphragms are in confronting relationship and no longer need to be spaced sufficiently apart. Camming ramps are provided in the channels and on the wings by which to drive the dome diaphragm into the reusable diaphragm.

Abstract: A medical pressure transducer includes a reusable component with channels to either side of a reusable diaphragm, and a disposable dome with mounting wings to either side of a disposable diaphragm and slidably receivable in the channels to mount the dome with the diaphragms in confronting relationship. Camming ramps are provided in the channels and on the wings by which to drive the dome diaphragm into the reusable diaphragm. Where the channels are defined behind outer front walls, the outer surface of one is provided with a tab-receiving slot to receive a locking tab associated with dome to lock diaphragms into confronting relationship. The dome includes second wings spaced from the mounting wings to receive the outer front walls. The second wings have finger gripping portions one of which is a locking paddle supporting the lock tab. In alternative embodiments, the dome wings are edges, fixed or resilient, receivable through slots formed in the reusable component.

Abstract: A mounting structure (10) for facilitating the mounting of a medical device (20) to a support member (22). The medical device (20) includes a plate (28) having a downward facing device coupler (33). A connector (26) has a clamp (27) which is used to attach the connector (26) to the support member (22). The connector (26) further has an upward facing support coupler (34). The medical device (20) is initially hung from the connector (26) by engaging the device coupler (33) with the support coupler (34). In that partially coupled position, the medical device is stably supported on the support member but may be lifted therefrom. In addition, a latch (46) may be used to clamp the couplers (33, 34) together, thereby fully coupling the medical device (20) to the connector (26). With the latch (46) engaged, the medical device (20) is firmly engaged onto the connector (26).

Abstract: A medical pressure transducer includes a reusable component with channels to either side of a reusable diaphragm, and a disposable dome with mounting wings to either side of a disposable diaphragm and slidably receivable in the channels to mount the dome with the diaphragms in confronting relationship. Camming ramps are provided in the channels and on the wings by which to drive the dome diaphragm into the reusable diaphragm. Where the channels are defined behind outer front walls, the outer surface of one is provided with a tab-receiving slot to receive a locking tab associated with dome to lock diaphragms into confronting relationship. The dome includes second wings spaced from the mounting wings to receive the outer front walls. The second wings have finger gripping portions one of which is a locking paddle supporting the lock tab. In alternative embodiments, the dome wings are edges, fixed or resilient, receivable through slots formed in the reusable component.

Abstract: A medical site (10) includes a slit septum environmental barrier (12) held across the inlet opening (76) of housing (16). Site (10) includes a disc anti-reflux valve (14) below the inlet (76) of housing (16).

Abstract: A pressure transducer (10) for measuring fluid pressure in a fluid path comprising a strain gauge circuit (37) of thick film piezoresistors formed on an alumina diaphragm (36) in a Wheatstone bridge configuration. Each resistance leg of the bridge typically includes a thick film measuring piezoresistor (R1A) to which selected thick film patch-in piezoresistors (R1B, R1C, R1D, R1E) are selectively connected to create a measuring resistance network (PN1). The measuring resistance network is adjusted to a predetermined resistance value to balance and optimize the electrical symmetry of the bridge. The pressure transducer (10) includes a mechanical stop member (46) located adjacent the alumina diaphragm (36) such that the fully deflected diaphragm contacts the stop thereby physically preventing the diaphragm from deflecting an amount that would cause the diaphragm to rupture.

Abstract: A sample site having a needleless connector access port including a flush mounted valve assembly which is readily accessible for wiping clean with a disinfectant. A male Luer connector may be operatively connected into the access port by a split Luer arrangement of female Luer connector portions adjacent the access port aperture. The split Luer arrangement does not generally obstruct wiping access to the access port and may include moveable connector portions to provide completely unobstructed wiping access thereto.

Abstract: A fast flush catheter valve is disclosed having a valve body with a longitudinal bore therethrough for the flow of fluids through the valve. A tube is mounted substantially transverse to the longitudinal bore to substantially block the longitudinal bore. An actuating member is mounted through the exterior of the valve body so that one end of the actuating member is proximate the tube and the second end extends beyond the exterior of the valve body. A resilient biasing flange connects the second end of the actuating member to the exterior of the valve body. A capillary is mounted through the tube to provide a drip rate flow. Depressing the second end of the actuating member deforms the tube to produce a flush rate around the tube and releasing the second end causes the resilient flange to return the actuating member to a position where the tube can elastically return to the longitudinal bore blocking position. The valve is constructed from a few components and is simply and inexpensively constructed.

Abstract: A sample site having a needleless connector access port including a flush mounted valve assembly which is readily accessible for wiping clean with a disinfectant. A male Luer connector may be operatively connected into the access port by a split Luer arrangement of female Luer connector portions adjacent the access port aperture. The split Luer arrangement does not generally obstruct wiping access to the access port and may include moveable connector portions to provide completely unobstructed wiping access thereto.