Dsu Medical Corporation

Nxstage Medical, Inc.

Baxter International Inc.

B. Braun Medical Inc.

Lifestream Medical Corporation

David Bell

William J Schnell

David S Utterberg

Karen Wilson

Ying-Cheng Lo

John R Chapman

Clifford J Holmes

Winnie Kubey

A tubular medical fluid flow set comprises a pressure sensing chamber connected in flow-through relation to fluid flow tubing of the set. The pressure sensing chamber defines a movable, flexible, impermeable diaphragm dividing the chamber into two separate compartments. The fluid flow tubing communicates with one of the compartments and is isolated from the other of the compartments. A port is carried on the chamber, the port having a seal therein, and communicating with the other of the compartments. Thus, the other of the compartments is hermetically sealed until the port is opened for connection with a pressure measuring device, to keep the flexible diaphragm in a desired, initial position prior to opening of the seal.

Diaphragm pressure pod for medical fluids

A pad of elastomeric material having a softness of no more than about durometer 50 Shore 00. The pad may carry adhesive and/or a housing for adhering the pad to a surface, either directly or indirectly through an envelope which surrounds the pad and carries the adhesive. Such a pad exhibits hemostatic and leak prevention properties against needle puncture holes in the skin or the wall of a hollow medical device. Particularly, hemostasis may be prevented with low pressure application of the pad to the skin. The pad may be previously applied to the skin of the patient or a wall of a medical device such as tubing or a solution bag, and the needle may then penetrate both the pad and the skin or medical device wall, to make a resealable puncture with leakage reduction and hemostasis when the needle is withdrawn.

Injection and hemostasis site

A medical device has an interior for containment of fluids; an opening into the interior, an elastomeric wall comprising a fixedly placed, flexible barrier across the opening; and a retention wall positioned adjacent to a peripheral portion of the elastomeric wall. The retention wall defines a central opening and has a generally rigid retention zone surrounding the central opening, to engage and retain a connector tube which is advanced into the central opening to open a flow aperture through the elastomeric wall, for flow through the wall and connector tube. One of the retention zone and connector tube may be made of a material of sufficient hardness that material of the other engaging member is deformed by engagement therewith, which increases the strength of retention between the retention wall and the connector tube.

Injection site for male luer or other tubular connector

A pad of elastomeric material having a softness of typically no more than about durometer 50 Shore 00. The pad may carry adhesive and/or a housing for adhering the pad to a surface, either manually, or by adhesive tape, or another strap. Such a pad exhibits hemostatic and leak prevention properties against needle puncture holes in the skin or the wall of a hollow medical device. Particularly, hemostasis may be prevented with low pressure application of the pad to the skin. The pad may be previously applied to the skin of the patient or a wall of a medical device such as tubing or a solution bag, and the needle may then penetrate both the pad and the skin or medical device wall, to make a resealable puncture with leakage reduction and hemostasis when the needle is withdrawn.

A medical tubing set sheath is provided which includes a retention portion for attaching the sheath to a collar of a connector attached to the medical tubing set. The sheath may serve as a handle to facilitate torque-locking of the connector to another connector. The sheath may also include a ratcheting mechanism in order to allow for the sheath to ratchet upon application of excess torque, when the tubing set is being attached to a peripheral tubing set. The sheath may also include a needle receiving portion, so that the sheath provides for a needle protector, which may be retained in a position displaced from the needle in order to insure that the needle is exposed when removed from its packaging, and can be quickly and easily inserted in a patient's arm.

Medical tubing set sheath

A winged needle comprises a hollow medical needle which typically is no smaller than 18 gauge carried by a hub. The hub has wings projecting laterally outwardly, the wings having outer tips that are spaced from each other by essentially 20 to 30 mm. A guard for a winged needle tube set is also disclosed, in which the guard comprises a needle guard tube free of wing-receiving slots and defining a forward, open end to receive a winged needle having outwardly extending, substantially unbent wings as positioned within the guard. In some embodiments, the guard comprises a substantially fixed, open mouth having a width of at least 20 mm and a height of at least 5 mm. A novel anchor strip having two flex lines is also provided to the guard.

Short winged needle and guard

A medical device has an interior for containment of fluids; an opening into the interior, an elastomeric wall comprising a fixedly placed, flexible barrier across the opening; and a retention wall positioned adjacent to a peripheral portion of the elastomeric wall. The retention wall defines a central opening and has a generally rigid retention zone surrounding the central opening, to engage and retain a connector tube which is advanced into the central opening to displace the elastomeric wall and to open a flow aperture through the elastomeric wall, for flow through the wall and connector tube. One of the retention zone and connector tube are made of a material of sufficient hardness that material of the other engaging member is deformed by engagement therewith, which increases the strength of retention between the retention wall and the connector tube.

A tubular set portion for circulating blood between a patient and an extracorporeal blood treatment device. The set portion has: an arterial tube for conveying blood from a patient toward the blood treatment device; a venous tube for conveying blood from the blood treatment device back towards the patient; and a pair of spaced, transverse tubes that each connect between the arterial tube and the venous tube, each of the tubes being capable of clamp sealing. The arterial and venous tubes are clamp sealable between the spaced, transverse tubes. Flow reversal on the patient's side of this device is possible by appropriate clamping of two opposed tube sections of the rectangular array which may be formed by the joined tube sections, while flow remains unchanged on the side of the tubular set portion that is connected to the extracorporeal blood treatment device.

Blood flow reversing system

A medical needle protector sheath comprises a tubular body for surrounding and shielding a needle, with the sheath defining an anchor member integrally attached to the front of the body for manual holding, plus a closure cap for the front end which is integrally attached to the body. Also, a manually removable wing member may be carried about the hub of the needle. A tunnel member typically of the inverted U cross section provides longitudinal securance to the needle and hub while penetrating the skin of the patient while at the same time permitting axial rotation of the needle.

Growing community of inventors

Grayslake, IL, United States of America

David Bell