U.S. patents available from 1976 to present.
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Venous dialysis needle

Patent 5662619 Issued on September 2, 1997. Estimated Expiration Date:

Icon_subject

November 27, 2015. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

1273542

2748769

3492992

3603311

Double lumen hemodialysis catheter
Patent #: 4134402
Issued on: 01/16/1979
Inventor: Mahurkar

Bi-directional flow catheter with retractable trocar/valve structure
Patent #: 4180068
Issued on: 12/25/1979
Inventor: Jacobsen , et al.

Fluid drain or injection tube for an animal's udder
Patent #: 4236520
Issued on: 12/02/1980
Inventor: Anderson

Hypodermic needle
Patent #: 4411657
Issued on: 10/25/1983
Inventor: Galindo

Methods and apparatus for intravenous therapy and hyperalimentation
Patent #: 4431426
Issued on: 02/14/1984
Inventor: Groshong , et al.

Aortic cannula
Patent #: 4643712
Issued on: 02/17/1987
Inventor: Kulik , et al.

Inventor

Zarate, Alfredo R.

Application

No. 563210 filed on 11/27/1995

US Classes:

604/272, Body piercing condit (e.g., needle, etc.)604/246, Means for controlling material flow to or from body, or metering a predetermined dose or amount604/264Body inserted tubular conduit structure (e.g., needles, cannulas, nozzles, trocars, catheters, etc.)

Examiners

Primary: McDermott, Corrine
Assistant: Mehta, Bhisma

Attorney, Agent or Firm

Foley & Lardner

International Classes

A61M 005/32
A61M 005/00
A61M 025/00

Abstract

A dialysis needle using lateral openings and diverters. The diverters increase the blood flow through the lateral openings in venous needles.

Other References

Webster's II New Riverside University Dictionary, Houghton Mifflin Company, 1994, pp. 169, 18

Field of Search

Specific structure of body entering or piercing conduit

Body inserted tubular conduit structure (e.g., needles, cannulas, nozzles, trocars, catheters, etc.)

Body piercing condit (e.g., needle, etc.)

Body entering conduit axially movable within body piercing conduit while former is disposed in the body

Piercing conduit longitudinally separable for removal from body entering conduit

Body entering conduit axially movable within flexible protective sheath facilitating sterile insertion into body duct

With means for cutting, scarifying, or vibrating (e.g., ultrasonic, etc.) tissue

Material introduced into and removed from body through passage in body inserted means

Peritoneal dialysis

Flow control

Treating material introduced into or removed from body orifice, or inserted or removed subcutaneously other than by diffusing through skin

Treating material forced into or out of body by self-acting fluid pressure, motor-driven, or mechanical energy storing means (e.g., pressure infusion or aspiration, etc.)

Means for controlling material flow to or from body, or metering a predetermined dose or amount

Having fluid responsive means (e.g., check valve, etc.)

Having flow closing or opening means (e.g., plug, cap, seal, etc.)

Means for inserting or removing conduit within body

Cutting, puncturing or piercing

Cutter carried on elongated probe-like member

Punch

Puncturing or piercing

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