270 results about "Stopcock" patented technology

An improved luer lock receiving septum having a configuration which provides rapid and tight resealing and yet allows penetration of the septum by the luer tip with a low penetration force. The elongated septum includes an upper portion of enlarged diameter having a target surface, a central slit, and a central, lower septum extension projecting about the slit below the upper portion and into a housing so that following luer insertion there is provided sufficient room for both the laterally displaced extension of the septum, the luer taper, and the housing to be received into a conventional luer lock connector. The septum is further preferably configured to minimize or eliminate the negative pressure deflection normally associated with the withdrawal of the large diameter luer cannula from an enclosed fluid filled lumen or chamber, by substantially isolating the lumen or chamber from the septum material displacement resultant from luer insertion. In an exemplary embodiment, the luer receiving septum is provided at a port of a stop cock.

A cannula useful for endoscopic surgery. The cannula includes an outer tube in which an inner tube is removably seated. A surgical instrument can be positioned at the surgical site through the inner tube and irrigation fluid can be flowed to the surgical site through the inner tube. The tubes are spaced from each other to form a channel through which fluid can be selectively withdrawn from the surgical site. Fluid flow to and from the surgical site through the cannula is controlled by a valve assembly that has a single valve cock. The valve cock can be positioned to allow maximum irrigation flow/no suction flow or no irrigation flow/maximum suction flow. Bores internal to the valve cock are shaped so that, while the suction flow is initially incrementally increased, the irrigation flow is at a constant level.

A sealable access stopcock includes a valve body having a switching part formed in a valve shaft thereof for switching from one flow passage to another; and a main body having an internal chamber in which the valve shaft of the valve body is rotatably fitted, and a plurality of tributary tubes each having a lumen extending therethrough, the lumen opening on a side wall of the internal chamber; the valve body being rotated to selectively bring the lumens into communication with one another through the switching part and thereby switch flow of an infusion fluid from one flow passage to another. A switching channel is provided in the form of an arcuate groove in the switching part of the valve shaft to extend along the circumferential surface thereof.

The present invention is directed to a connector with which negative pressure in the channel space in the connector can be prevented during luer removal, in a closed-system connector. A slit ( 49 ) is furnished in valve body ( 40 ) of three-way stopcock ( 100 ). During luer access and luer removal, first and second moving parts (M 1 and (M 2 ) to the left and right of slit ( 49 ) enter and withdraw from first and second valve body accommodating chambers ( 51 ) and ( 52 ), respectively. First and second valve body accommodating chambers ( 51 ) and ( 52 ) are formed outside of channel space (S), so the operation whereby first and second moving parts (M 1 ) and (M 2 ) enter and withdraw during luer access and luer removal does not affect the change in volume of channel space (S) and negative pressure can be prevented from occurring in channel space (S) by the aforementioned entry and withdrawal.

A whole blood sampling kit for obtaining blood samples from a central line. The system is comprised of three syringes, a 4-way stopcock body, and a needle or blunt cannula access devise. The three syringes are a 1 cc heparinized syringe for blood sampling, an empty 3 cc blood and infusing fluid aspirating syringe, and a 3 cc flush filled syringe. The syringes are attached to three female ports on the top of the kit's stopcock. A lever on the kit's stopcock points to the female port and syringe it is on to. A needle or blunt cannula is attached to the male adapter on the bottom of the kit's stopcock. The access device connected to the male adapter has a locking system with a matching sample site. The whole kit, via the needle or blunt cannula, attaches to a central line's sample site for withdrawing blood.

An assembly is provided which includes an infusion device coupled to a standard medication syringe. The medication syringe may be coupled to a stopcock valve having multiple ports and to which syringes, vial adapters, infusion tubing, and multiple other items may be coupled. The infusion device includes a source of power based on a resistance force such as vacuum, spring or gas power. The infusion device converts the resistance based force to usable work in the form of a force applicator. The force applicator includes a driver section on one section of a reciprocating arm and an attachment to the power source on another section of the arm. The driver is pulled outward (excursion) to increase the size of the chamber, creating a force that tends to return the driver back inward, causing incursion. The driver can be attached removably to the syringe plunger to induce the infusion process.

This invention provides a female medical coupling port with an integrated port guide to enable more accurate and precise coupling of a male port coupling (such as the cannula of a syringe) and to prevent port exposure to non-sterile objects. The male and female ports can be arranged according to standard dimensions for male and female luer taper fittings recognized by ANSI and by ISO. This guide-shielded port is usable with the standard ANSI and ISO male cannula widely used in the medical field. In an embodiment the female port is used in medical fluid systems to receive a blunt male cannula, such as those found in the luer lock fitting of needle-less syringes and IV tubing systems to establish a mechanical coupling. Female ports allow coupling of devices (e.g. syringes and IV tubing) to a variety of medical applications including stopcocks, minimum fluid displacement medical couplings, female-to-female adapters, port dead-end caps, IV extension sets, pressure-monitoring devices, etc. The port guide can be constructed as a unitary part of the port, or can be a retrofittable structure that is either snapped into place on, for example, a female port stem, or slid onto a port, such as a minimum displacement fluid coupling. Appropriate drain ports can be provided in the port guide to prevent capture of excess fluid.

Kits and methods for closed-system sampling blood in patients are disclosed. The kit includes a four-port stopcock adapted to allow communication at least between two ports. The stopcock has a first port adapted to receive a syringe, a second port for communicating with an infusion solution reservoir, a third port for receiving a flush solution, and a fourth port for communication with a patient. The kit also includes at least one sampling site adapted to fluidically communicate with the fourth port and to be positioned between the four-port stopcock and the patient. At least one of the sampling sites is adapted to allow extraction of a fluid being communicated between the stopcock and the patient.

A disposable, closed fluid sampling system for use with a medical conduit line, especially for taking blood samples from a pressure monitoring line. The conduit line has at least one fluid sampling site interposed between a distal segment of tubing and a proximal segment of tubing. The system includes a disposable subsystem having a bypass cannula adapted to engage the sampling site, a reservoir for drawing a prime volume of fluid past the sampling site, and a fluid sampling container. A 3-way stopcock may connect the reservoir, bypass cannula, and sampling vessel for controlling the sampling procedure. The bypass cannula may simultaneously place the subsystem into fluid communication with an inner chamber of the sampling site and exclude the proximal segment of the conduit line. Alternatively, a stopcock immediately adjacent the sampling site in the proximal segment may be utilized. A method of using the system includes attaching the disposable subsystem, opening the reservoir to the distal segment while excluding the proximal segment, drawing a prime volume of fluid into the reservoir, opening the sampling vessel to the distal segment and drawing a sample, re-infusing the prime volume into the distal segment, and removing and discarding the subsystem. The reservoir remains attached between the prime volume draw and re-infusion and is thus “closed.”

The present invention is an injection port with an articulated stopcock allowing a syringe to be connected to an IV line and, depending upon the orientation of the stopcock, allow (1) bidirectional flow of fluid through the stopcock into the IV line, (2) no flow or (3) unidirectional flow of fluid through the stopcock and into or out of the IV line. The invention is particularly useful for using a syringe for aspirating an IV line and then injecting a medicine from the syringe into the IV line. Once a syringe is connected, the invention allows one-handed manipulation of the articulated stopcock into the three orientations by simply moving the connected syringe into one of the three orientations, thereby eliminating the need for using two hands—one to operate the syringe and the other to operate the handle.

Methods and apparatus for preventing patient bloodstream infection by microorganisms during administration of various medications or fluids through IV lines. In particular, the invention reduces contamination of IV lines, connecters, stopcock valves, manifolds, ports, etc. by means of irradiation by violet and/or blue light. Each embodiment comprises a source of violet and/or blue light and an optical element optically coupled to that light source for shaping the radiation pattern of the light emitted by the light source. Preferably, a light-emitting diode or a laser diode that emits light in the desired wavelength can be used. The optical element, optically coupled to the light source, is embedded or installed in or attached to a component of an IV set, the emitted light being directed to a “point of entry” or any other stagnation point of an IV set.

An assembly is provided which includes an infusion device coupled to a standard medication syringe. The medication syringe may be coupled to a stopcock valve having multiple ports and to which syringes, vial adapters, infusion tubing, and multiple other items may be coupled. The infusion device includes a source of power based on a resistance force such as vacuum, spring or gas power. The infusion device converts the resistance based force to usable work in the form of a force applicator. The force applicator includes a driver section on one section of a reciprocating arm and an attachment to the power source on another section of the arm. The driver is pulled outward (excursion) to increase the size of the chamber, creating a force that tends to return the driver back inward, causing incursion. The driver can be attached removably to the syringe plunger to induce the infusion process.

The invention discloses a steplessly adjustable electric control gas valve which comprises a valve body, a valve plug, and a motor for driving the valve plug, wherein a cock hole fitted with the valve plug is arranged in the valve body, and the inner wall of the cock hole is provided with air inlet holes; an axially-arranged center hole is arranged in the valve plug, and the circumferential surface of the valve plug is provided with at least two air outlet holes which correspond to the same air inlet hole and used for controlling the flow quantity of each section of gas flowing through the air inlet hole; the external wall surface of the valve plug at the height of the air outlet hole is provided with a vent groove which is arranged along the circumferential direction of the valve plug, the air outlet hole for controlling the maximum gas flow quantity of the air inlet hole is communicated with the vent groove, and the parts of the other air outlet holes close to the center hole are radially narrowed so as to form a gas control section. The electric control gas valve disclosed by the invention has the advantages that through setting the vent groove communicated with the air outlet hole for controlling the maximum air flow quantity of the air inlet hole on the external circumferential surface of the valve plug, the parts of the other air outlet holes close to the center hole areradially narrowed so as to form the gas control section, therefore, even if gaps exist between mechanisms, the firepower of stoves also can accurately be controlled.

The invention relates to a pretreatment method for measuring 14C abundance of an organic compound type sample. The method includes transferring carbon atoms in the organic compound into CO2 molecules through combustion, reacting CO2 with a NaOH solution to obtain a saturate NaHCO3 solution, heating the saturate NaHCO3 solution to obtain a saturate Na2CO3 solution, and adopting the saturate Na2CO3 solution for 14C abundance tests. The invention also provides a device used for the method. The device mainly comprises an oxygen cylinder, a nitrogen cylinder, a cold trap A, a three-way stopcock A, a combustion chamber, a cold trap B, a stone, a cold trap C, a three-way stopcock B, a conical flask, a cold trap D, a three-way stopcock C, a U-shaped gas sample collector, a three-way stopcock D, a vacuum gauge, a vacuometer, a piston D and a vacuum pump. On the basis of guaranteeing the measuring accuracy, the method largely simplifies the chemical treatment process, increases the time efficiency and reduced the cost.

A system which applies pressure to a flexible, collapsible container of liquid stored within a flexible backpack. The system has an inflatable bladder of similar size and shape as the collapsible container of water upon which pressure is to be exerted. A tube permanently attached to the fluid container, having a valve at the opposite end for release of pressurized fluid when opened. A valve mechanism which can be opened by squeezing with the teeth when positioned in the user's mouth, or by digital pressure when held on the hand. A tube of permanently attached to the inflatable bladder through which air or other gas may pass providing means to inflate the bladder. The tubes being of sufficient length to extend beyond the confines of the backpack containing the liquid chambers extending to with easy reach of the person wearing the backpack. A stopcock or other valve connection providing means to control airflow into and out of the inflatable bladder. A pressure ball which provides means of forcing air into the bladder by repeated hand pressure on the ball.

The present invention is a safe, inexpensive, easy to use and effective anti-snoring and anti-sleep apnea treatment device. The device has a vertical and horizontal bar. The horizontal bar is placed inside the mouth, behind or between the molar teeth with palatine and tongue shelves to prevent snoring and movement of the tongue backwards. The device is tethered to the hard palate by vacuum cups to prevent the movement of the tongue backwards during sleep to prevent sleep apnea. The proximal end of the vertical bar is anchored to string at the distal end with hook and loop fabric closure adhesive attachment and to the lips outside the mouth to prevent the accidental swallowing and aspiration of the device; and at the same time holds the tongue and device firmly in the mouth. The device is provided with canula with three way stopcocks to deliver supplemental oxygen and therapeutic agents.

The invention relates to a taking machine for liquid or ropy material with better liquidity in a high-capacity plastic flexible package. The taking machine comprises a thimble provided with a limit table and a film resistance table, a locking slide bush A or a locking slide bush B or a locking slide bush C or a base provided with a locking face, a locking seal part, a seal element, a spring, a spring slot, a stopcock or a valve or a water suction pump and a cover or a plug. The beneficial effects of the taking machine are as follows: the possibility that the material in the high-capacity plastic flexible package outflows during the package puncturing process or leaks due to imperfect sealing in use process is completely eradicated; the taking machine provided by the invention can be independently or be connected with a clamp, a stopcock and a valve or a water suction pump for being repeatedly applied to the high-capacity plastic flexible package; and based on the taking machine, a novel portable taking machine, or a connecting device or an all-in-one machine in upper material taking pipeline connecting type, an upper material taking floater connecting type, a lower material taking fixing thimble pipeline connecting type, a lower material taking fixing thimble floater connecting type, a lower material taking movable thimble pipeline connecting type and a lower material movable thimble floater connecting type can be assembled.