57 results about "Aspiration fluid" patented technology

An aspiration collection cassette 10 includes a housing 12 for receiving aspiration fluids from a surgical site. An aspiration port 14 is attached to the housing 12 for connection to an aspiration tube 50 and for providing a passage way to an interior 22 of the housing 12. A vacuum port 16 is disposed in the housing 12 and communicates with the housing interior 22 for cooperation with a vacuum pump. A length of tubing 20 is connected to the housing 12 on each end, such that the tubing 20 will be placed between a peristaltic pump head and a backing plate.

A fluid aspiration device is provided having a syringe, a disposal reservoir and a disposal fluid passageway. The syringe has a variable-volume fluid chamber and an aspiration fluid passageway between the fluid chamber and a region of the body containing a fluid for aspiration. An aspiration valve is positioned in the aspiration fluid passageway. The disposal fluid passageway is between the fluid chamber and disposal reservoir and has a disposal valve positioned therein. The fluid is aspirated by expanding the variable volume of the fluid chamber to draw the fluid through the open aspiration valve into the fluid chamber. The aspiration valve is closed and the variable volume of the fluid chamber is contracted to open the disposal valve and displace the fluid into the disposal reservoir. When aspiration is terminated, the fluid aspiration device is maintained intact and the intact device including the fluid is disposed.

A cassette 74 for use with an ophthalmic surgical pump 16 for collecting aspirant fluid and tissue from a patient's eye includes a rigid walled container 18 having an interior volume 42. At least one tapered alignment slot 20 is formed in a side wall of the container 18 and extends from a back wall 24 towards a front wall 26. An irrigation and aspiration manifold base 50 is removeably attached to the container 18. An aspiration path 46 is formed within the container 18 for receiving the aspiration fluid and the tissue from the eye and directing the flow of fluid towards a front half of the container 18 before the fluid and tissue collects within a majority of the interior volume 42 of the container 18. A fluid level indicator 34 is formed on a wall 22 of the container 18, such that an associated photo-detector 86 of the pump 16 may determine a level of fluid in the container 18.

Apparatus and methods for withdrawing nasopharyngeal fluid samples from a patient are disclosed. A kit including a catheter and a manual suction device is disclosed, wherein the catheter can be self-navigating and define aspiration holes through which aspiration fluid can be emitted and nasopharyngeal fluid samples can be withdrawn. The catheter may also include an insertion depth scale to ensure patient comfort and optimum sample quality. The methods for obtaining nasopharyngeal fluid samples include the steps of inserting the catheter into a patient's nasopharynx, and aspirating the nasal pharynx to withdraw a specimen.

A device for, when connected to a vacuum system, conducting aspiration fluid away from a surgical site includes a conduit having a portion adapted for insertion into the surgical site. The device also includes a flow limiter interposed between the vacuum system and the conduit and in fluid communication with the conduit. The flow limiter has at least two orifices arranged in series and a flow path interconnecting the at least two orifices. The flow path has a flow area that is greater than a flow area of each one of the at least two orifices. Aspiration fluid flows through the conduit and the flow limiter in response to a pressure drop between the surgical site and the vacuum system. The flow limiter produces a non-linear relationship between a rate of aspiration fluid flow and the pressure drop.

An ophthalmic surgical apparatus for phacoemulsification includes an aspiration line to transport an aspiration fluid and particles of an eye generated by phacoemulsification. A suction vacuum pump draws in the aspiration fluid and the particles of the eye via the aspiration line and a flow limiter adjustably limits the flow to a flow lying in a range of 5 milliliter to 100 milliliter per minute. The aspiration line defines an inner cross section and has an outer wall. The flow limiter is arranged upstream of the suction vacuum pump and has at least two press-on elements. The elements are each configured to contact engage the outer wall so as to cause the inner cross section to be reduced. The press-on elements are disposed mutually spaced so as to define a predetermined distance therebetween and are arranged to be rotatably movable in a rotational direction about a common rotational axis.

Apparatus, system and method for providing pressurized infusion of liquids and, more particularly, providing a stable and pressurized flow of fluid to the eye during surgery. Aspiration fluid may be received via an aspiration line at a first peristaltic pump, where aspiration fluid is transferred to a Venturi tank reservoir coupled to a second peristaltic pump. Fluid from a fluid source is provided via a third peristaltic pump to a pressurized infusion tank. A determination is made if the pressure in the pressurized infusion tank is at a predetermined level, where fluid may be transferred from the pressurized infusion tank to an irrigation line when pressure in the pressurized infusion tank is determined to be at the predetermined level. Alternate activation of a plurality of aspiration and irrigation lines are also provided.

The invention provides an injection dosing method and a dosing apparatus utilizing the same. The injection dosing method includes building a first passage between a liquid bottle and a negative pressure suction apparatus and a second passage between the liquid bottle and an injection ampoule. The negative pressure suction apparatus sucks air in the liquid bottle through the first passage so that negative pressure is formed inside the liquid bottle, the negative pressure in the liquid bottle is transmitted to the terminal of the second passage in the injection ampoule through the second terminal so that liquid medicine is sucked into the liquid bottle, and accordingly the dosing process is completed. The dosing apparatus comprises a double-passage puncture needle, a suction tube and the negative pressure suction apparatus, wherein the head of the double-passage puncture needle is provided with a liquid medicine inlet and an air suction hole, the other end of the puncture needle, exposed from a plug of the liquid bottle, is provided with a negative pressure connector and a suction tube connector, the air suction hole of the puncture needle is communicated with the negative pressure connector to form the first passage, the liquid medicine inlet and the suction tube connector of the puncture needle are communicated with the suction tube to form the second passage. By the aid of the dosing method and the dosing apparatus utilizing the same, operation can be simplified, and defects of puncturing the rubber plug of the liquid bottle repeatedly and operational complication in the prior art are avoided.

An ophthalmosurgical measuring device (100) has an irrigation line (4) through which irrigation fluid (3) can be transported and an aspiration line (7) through which aspiration fluid can be transported to a suction pump (8). The ophthalmosurgical measuring device also includes a sensor (10) with which a differential pressure between irrigation line (4) and aspiration line (7) can be detected.

A system or device for providing medical suction, particularly for intubating patients, wherein the system or device helps prevent clogging from solids dispersed in the liquid to be suctioned. This device will allow the user to effectively clear an airway or other region of the patient while minimizing the occurrence of clogs and providing for the effective and expedited unclogging of the device without the necessity of removing the device from the patient or requiring two hands to unclog.

According to one exemplary aspect, this disclosure is directed to an aspiration system for a phacoemulsification surgical system. The system includes a pump and a flexible tubing configured to convey aspiration fluid from a hand piece to the pump. The flexible tubing includes a non-compliant, resistive element associated with the hand piece and disposed between the surgical site and the flexible tubing. The resistive element comprises a fluid pathway having substantially consistent nominal inner diameter and being configured to convey the aspiration fluid to the flexible tubing, the resistive element being formed in a compact orientation that provides a nonlinear fluid pathway length that is significantly greater than the axial length of the resistive element. The resistive element is structurally configured to provide occlusion surge resistance due to pressure changes resulting from occlusions in the aspiration path at the hand piece needle.

The invention relates to a disposable sterile precise automatic liquid suction administration injection device, which comprises a pressing plate, a liquid suction pump, a liquid suction pump, a liquid suction pump, a liquid suction pump, a liquid suction pump and a liquid suction pump, and is characterized in that the pressing plate is used for providing a negative-pressure environment for a medicine injection device based on self-displacement; the air bag is used for providing driving force needed by displacement of the pressing plate; and the second quantifying assembly is used for controlling the displacement amount of the pressing plate. In the process that the air bag pushes the pressing plate to suck the liquid, the second quantitative assembly can control the displacement amount of the pressing plate based on pre-pressing, so that the dosing injection device can quantitatively suck the liquid medicine with the volume multiple of the preset minimum unit. According to the dosing injection device, automatic suction of the dosing injection device is achieved by adopting an inflation mode instead of a manual mode, and quantitative suction of liquid medicine is achieved by arranging the quantitative assembly.

The present invention is directed to a fluid transfer apparatus for sucking liquid from a container and transferring to another container or target. The fluid transfer apparatus comprising a squeeze bulb, the squeeze bulb having a first opening and an opposite second opening. A first check valve coupled to the first opening and a second check valve coupled to the second opening, wherein the first check valve and the second check valve together are configured to control the direction of fluid flow in one direction i.e. the liquid can enter from first check valve leaves from the second check valve. A transfer tube is fluidly coupled to the first check valve and a dispensing tube is coupled to the second check valve. The squeeze bulb is configured to suck liquid from a container through the transfer tube, wherein the liquid collects in the squeeze bulb and the dispensing tube. The other end of the dispensing tube is closed by a nipple, the nipple having a hole.

The invention relates to a double-pipe bite block protection type high-frequency oxygen jet and sputum aspiration fluid director, in particular to double-pipe bite block protection type high-frequency oxygen jet and sputum aspiration fluid director device equipment used for patients with dyspnea. According to the double-pipe bite block protection type high-frequency oxygen jet and sputum aspiration fluid director, an expansion end oropharynx flow guide pipe and a sputum aspiration pipe are sleeved with a bite block sleeve, a flow guide pipe outlet is communicated with the expansion end oropharynx flow guide pipe, and penetrates through the bite block sleeve to be communicated with a flow guide pipe inlet, one end of the sputum aspiration pipe is inserted into the oral cavity, the middle of the sputum aspiration pipe is sleeved with the bite block sleeve and a bite block fender, the other end of the sputum aspiration pipe is communicated with a sputum aspirator, one end of the flow guide pipe inlet is connected with an internal thread conical inserting pipe, an internal thread is connected to an external thread connector, and an external thread conical inserting pipe is communicated with a high-frequency oxygen jet breathing machine. The double-pipe bite block protection type high-frequency oxygen jet and sputum aspiration fluid director has the advantages that the structure is simple, operation is convenient, the double-pipe type bite block sleeve is adopted, oxygen conveying and sputum aspiration for the patients are smooth, cost is lowered, use is safe and stable, and the double-pipe bite block protection type high-frequency oxygen jet and sputum aspiration fluid director is widely used for the high-frequency oxygen jet and sputum aspiration fluid director equipment for the patients with dyspnea.

A phacoemulsification system that includes a hand-graspable body and a phacoemulsification needle extending from a distal portion of the body is disclosed herein. The phacoemulsification system may also include an impeller pump carried by the hand-graspable body and configured to convey an aspiration fluid from a surgical site. The impeller pump may include an aspiration motor and a flexible impeller coupled to and rotatably driven by the aspiration motor. The flexible impeller may be arranged to aspirate fluid and emulsified lens tissue from the surgical site.