Assignee: Critikon, Inc.

Location: Tampa, FL
No. of patents: 88

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Number	Title	Issue Date
5606977	Oscillometric blood pressure monitor which automatically determines when to take blood pressure measurements An automated sphygmomanometer which automatically determines when a blood pressure determination needs to be made. During a "guard mode" determination, a cuff on an appendage of the patient is frequently inflated to a check pressure, which is preferably b...	03/04/1997
5447163	Peripheral arterial monitoring instruments A method and apparatus are described for determining characteristics of peripheral arterial volume and compliance. A blood pressure cuff is inflated and deflated around a limb of the body and pressure measurements are taken. The volume of air removed from...	09/05/1995
5425903	Laser beveling process for catheters A process and product and apparatus are disclosed wherein a laser is used to form a conical tapered tip on a catheter product. The catheter is placed on an insertion needle prior to the formation process, thus eliminating the problems associated with wear...	06/20/1995
5419766	Catheter with stick protection A new catheter stick protector is described having a metal flap clip which snaps down into place to prevent return of the needle through the protector device once withdrawn. The device is small and received over the needle to provide an interface between ...	05/30/1995
5417220	Peripheral arterial monitoring instruments A method and apparatus are described for determining characteristics of peripheral arterial volume and compliance. A blood pressure cuff is inflated and deflated around a limb of the body and pressure measurements are taken. The volume of air removed from...	05/23/1995
5397512	Process for sealing catheter tip to insertion needle A process is provided wherein a laser is used to shape and/or trim a polymer tubular catheter material while in situ on a metal insertion needle or cannula. The laser process seals the interface between the polymer catheter material and the metal cannula ...	03/14/1995
5357970	Method for determining dominant heart rates A method for determining a dominant heart rate from a series of beat triggers representative of a mixed series of normal heart beats and non-arrhythmic activities, with the beat triggers being determined at a specific sampling rate defining sample interva...	10/25/1994
5311872	Peripheral arterial monitoring instruments A method and apparatus are described for determining characteristics of peripheral arterial volume and compliance. A blood pressure cuff is inflated and deflated around a limb of the body and pressure measurements are taken. The volume of air removed from...	05/17/1994
5312376	Catheter with clear needle shaft This invention relates to a novel needle for expeditiously determining proper insertion of the needle into a patient. A transparent shaft is positioned behind the tip of the needle. Upon insertion of the needle into the vein of a patient, blood is observe...	05/17/1994
5309908	Blood pressure and pulse oximeter monitor A patient monitoring system includes a pulse oximeter sensor and an audible alarm which is not produced when a blood pressure module is taking measurements, but only during that portion of the cycle that affects the pulse oximeter reading. During such mea...	05/10/1994
5282473	Sidestream infrared gas analyzer requiring small sample volumes An infrared gas analyzer implementing an optically stabilized detector in a sidestream configuration. In order to reduce the pneumatic sampling volume, an "optical funnel" or collimator is used to resize the optical aperture of a multi-channel optically s...	02/01/1994
5281817	Method of selecting an optical filter for a shutterless optically stabilized capnograph Methods and apparatus for constructing optically stabilized, shutterless infrared capnographs are disclosed. The capnographs of the present invention provide the absolute concentration of the constituents of the respiratory airstream of a patient, without...	01/25/1994
5253645	Method of producing an audible alarm in a blood pressure and pulse oximeter monitor A patient monitoring system includes a pulse oximeter sensor and an audible alarm which is not produced when a blood pressure module is taking measurements, but only during that portion of the cycle that affects the pulse oximeter reading. During such mea...	10/19/1993
5247185	Regulated infrared source An infrared source which provides a miniature, highly stable and efficient source of infrared energy for use with infrared detectors and the like. The infrared source of the invention incorporates a platinum resistance temperature detector (RTD) which is ...	09/21/1993
5218968	Peripheral arterial monitoring instruments A method and apparatus are described for determining characteristics of peripheral arterial volume and compliance. A blood pressure cuff is inflated and deflated around a limb of the body and pressure measurements are taken. The volume of air removed from...	06/15/1993
5201713	One-way intravenous catheter with needle guard One-way intravenous catheter assembly provided with a tubular needle guard slidable with respect to the needle housing, so as to completely cover the needle both before and after use, said needle housing comprising a substantially cylindrical central body...	04/13/1993
5193543	Method and apparatus for measuring arterial blood constituents A method and apparatus for non-invasively measuring blood constituent concentration and particularly the oxygen saturation of arterial blood. The apparatus includes at least one light source directed to a tissue area of a patient, such as a finger or earl...	03/16/1993
5187641	Patient monitoring unit and care station A care management workstation unit which contains three basic elements. There is a cathode ray tube or CRT, a mount, and a system unit. The CRT is rotatably mounted on the mount. It is capable of any rotational position and is able to be balanced at all s...	02/16/1993
5170795	Oscillometric blood pressure monitor and method employing non-uniform pressure decrementing steps A blood pressure cuff is applied about a subject's artery, and inflated above the systolic level thus fully occluding the artery for a full heart cycle. The cuff pressure is thereafter reduced to permit an increasing flow through the progressively less oc...	12/15/1992
5156792	Method of producing catheter assemblies for prevention of blood leakage A catheter is provided which deters the backflow of blood between the insertion needle and the catheter cannula by forming the distal end of the catheter hub so as to restrict the inner diameter of the catheter cannula to a wiping fit with the engaged ins...	10/20/1992
5127905	Stickless catheter with manual shut-off valve A catheter device is described with a safety needle guard that covers and protects the needle after use of the device. The device includes a semi-tubular needle housing containing a flash chamber with a hollow needle extending from the distal end of the f...	07/07/1992
5127407	Epidural oxygen sensor A sensor for measuring the oxygen saturation of blood flow within the skull is described. In a first embodiment the sensor comprises a photodetector and a pair of light emitting diodes surface mounted near the end of a length of flexible printed wiring. T...	07/07/1992
5126090	Method of forming a catheter with backflow restriction An over-the-needle catheter assembly in which a restriction of the inner diameter of the catheter tube is formed in the proximity of the needle hub. The restriction is formed by heating a portion of the catheter tube to the softening point of the catheter...	06/30/1992
5120319	Flash tube for intravenous catheter A catheter device is disclosed which contains a catheter in an insertion needle. The insertion needle is attached to a needle hub which contains a flash chamber. Within the flash chamber the proximal end of the needle is connected to a clear plastic tube ...	06/09/1992
5103833	Peripheral arterial monitoring instruments A method and apparatus are described for determining characteristics of peripheral arterial volume and compliane. A blood pressure cuff is inflated and deflated around a limb of the body and pressure measurements are taken. The volume of air removed from ...	04/14/1992
5095913	Shutterless optically stabilized capnograph Methods and apparatus for constructing optically stabilized, shutterless infrared capnographs are disclosed. The capnographs of the present invention provide the absolute concentration of the constituents of the respiratory airstream of a patient, without...	03/17/1992
5092845	Catheter with needle gasket A catheter assembly is provided with a needle guard that slides along the needle to shield the distal tip of the needle after the needle is withdrawn from a patient. The needle passes through an aperture at the distal end of the needle guard. To prevent t...	03/03/1992
5084023	Bloodless catheter with self-shielding needle A catheter with a double membrane gasket and a locking needle guard is disclosed. The gasket prevents blood from seeping through the catheter hub. The locking needle guard prevents the user from inadvertent needle sticks....	01/28/1992
5081998	Optically stabilized infrared energy detector Improved infrared detectors for use in device such as capnographs are provided. A preferred embodiment of an infrared detector of the invention is comprised of paired thermopiles, connect in opposed relation to each other, which are preceded by an analyti...	01/21/1992
5078687	Catheter with backflow restriction An over-the-needle catheter assembly is provided in which a restriction of the inner diameter of the catheter tube is formed in the proximity of the needle hub. The restriction is formed by heating a portion of the catheter tube to the softening point of ...	01/07/1992
5067492	Disposable airway adapter A disposable endotracheal airway adapter for use in proximity of a patient's mouth in the measurement of the concentraton of respiratory gases. The disposable airway adapter of the invention provides a conduit for patient respiratory gases and allows the ...	11/26/1991
5052397	Oscillometric blood pressure monitor employing non-uniform pressure decrementing steps The deflation of the inflatable and deflatable cuff worn by a subject during automatic sphygmomanometric measurement is accomplished in unequal size decrements and principally in larger steps than 7 Torr. Each step after detection of the initial oscillati...	10/01/1991
5053014	Catheter with controlled valve A catheter hub assembly is disclosed wherein the assembly contains a membrane useful in preventing backflow of blood into the flash chamber. The hub assembly contains a membrane opener which operates upon the insertion of a luer locking mechanism into the...	10/01/1991
5030205	Catheter assemblies for prevention of blood leakage A catheter is provided which deters the backflow of blood between the insertion needle and the catheter cannula by forming the distal end of the catheter hub so as to restrict the inner diameter of the catheter cannula to a wiping fit with the engaged ins...	07/09/1991
5024226	Epidural oxygen sensor A sensor for measuring the oxygen availability of blood flow within the skull is described. In a first embodiment the sensor comprises a photodetector and a pair of light emitting diodes surface mounted near the end of a length of flexible printed wiring....	06/18/1991
5000740	Catheter with needle guard A catheter device is described with a safety needle guard that covers and protects the needle after use of the device. The device includes a semi-tubular needle housing containing a flash chamber with a hollow needle extending from the distal end of the f...	03/19/1991
4994040	Through the needle catheter insertion device and technique A through the needle catheter device is described which includes apparatus for threading a catheter into a blood vessel. The apparatus is irreversible during the threading process. The catheter device also includes means for irreversibly withdrawing and s...	02/19/1991
4988229	Single hand notebook A looseleaf notebook is provided for retaining bar code listings which denote conditions of a patient in a hospital. The notebok includes a strap which encircles the binding of the notebook. Preferably this strap is fixed in place between the notebook rin...	01/29/1991
4957488	Through the needle catheter device A through the needle catheter device is described in which a catheter is located inside a splittable needle for insertion into the body. Means are provided for preventing rearward motion of the catheter relative to the needle as the needle and catheter ar...	09/18/1990
4957489	Through the needle catheter insertion device and technique A through the needle catheter device is described which includes apparatus for threading a catheter into a blood vessel. The apparatus is irreversible during the threading process. The catheter device also includes means for irreversibly withdrawing and s...	09/18/1990

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Assignee: Critikon, Inc.