112 results about "Cannula device" patented technology

The present invention generally relates to the insertion of a transcutaneous device of the type comprising a cannula (651) and a therein moveably arranged insertion needle (661), as well as the connecting of such a transcutaneous device with a fluid supply. Thus, a device is provided comprising an insertion needle and a cannula disposed on and being axially moveable relative to the insertion needle, the insertion needle comprising a proximal fluid inlet, a seal (655) being provided between the cannula and the insertion needle allowing fluid to be transported from the fluid inlet to the distal fluid outlet, wherein the insertion needle after having been used to insert the cannula is arranged at a retracted position proximally of the initial position, thereby allowing the fluid inlet to be connected to a fluid supply when it is moved from its initial to its retracted position.

A fluid delivery device for infusing medicinal fluids at a precisely controlled rate which includes adapter sleeve means for insuring that only a proper medicament can be used to fill the fluid reservoir of the apparatus. More particularly, the apparatus includes a unique polarity adapter that will mate only with a particular delivery device and positively prevent filling the reservoir of the device with a medicament that is incompatible with the delivery profile of the device. In one form of the invention, the polarity adapter includes a novel double-ended cannula that is carried within the polarity adapter and controls filling of the fluid reservoir.

Cannula device (1) for endoscopic surgical operations comprising: a cylindrical body (2) having an axial direction (2a) and defining a tube (3), an upper base (4) defining an inlet (5) of the tube (3) and a lower base (6) defining an outlet (7) of the tube (3), the inlet (5) and the outlet (7) defining a diagonal (8) joining substantially diametrically opposite points of the inlet (5) and of the outlet (7), wherein the cylindrical body (2) is manually deformable, in a manner suitable to increase the angle (α) of intersection between the diagonal (8) and the axial direction (2a).

A curable material delivery cannula device and method are disclosed. The device includes a cannula and a hub. The cannula includes an open proximal end, a deflectable segment forming a plurality of pre-set curves, each of which corresponds to a pre-determined temperature of the cannula, a lumen, and side orifice(s) adjacent, and proximally spaced from, the distal end and fluidly connected to the lumen. When distally extended from the guide cannula, and upon being heated to a predetermined temperature (before, during, or after extension), the deflectable segment assumes a curved shape, which may be used to create a void in the bone for receiving curable material. The distal cannula end includes a blunt tip for non-traumatic interface with bodily material. During use, curable material, such as bone cement, is delivered from the side orifice(s) in a radial direction relative to the lumen.

A curable material delivery cannula device and method are disclosed. The device includes a cannula and a hub. The cannula includes an open proximal end, a deflectable segment forming a pre-set curve, a lumen, and side orifice(s) adjacent, and proximally spaced from, the distal end and fluidly connected to the lumen. When inserted within a guide cannula, the deflectable segment straightens. When distally extended from the guide cannula, the deflectable segment reverts to the curved shape, which may be used to create a void in the bone for receiving curable material. The distal end has a blunt tip for non-traumatic interface with bodily material. During use, curable material, such as bone cement, is delivered from the side orifice(s) in a radial direction relative to the lumen.

Cannula assemblies and related methods are provided. In accordance with one embodiment, a cannula assembly includes a tubular structure coupled with a flange assembly. The flange assembly includes a plurality of wireform loops disposed in a circumferential, woven pattern about an end of the tubular structure. The flange assembly is configured to exhibit a first, collapsed state wherein the plurality of wireform loops extend substantially axially from the tubular structure, and a second, expanded state wherein the plurality of wireform loops extend in a direction having a substantial radial component relative to the tubular structure. In another embodiment, a cannula assembly includes a conformal flange coupled with a tubular structure, wherein the tubular structure extends both distally and proximally of the flange.

This invention describes apical access methods and devices that enable repair, modification, removal, and/or replacement of a defective heart valve while allowing the beating heart to deliver blood flow through the defective valve annulus for an extended period of time in volumes sufficient to sustain life. The invention is comprised of a flow housing having a blood inflow opening, a blood outflow opening, and a one-way valve disposed within the flow housing between the inflow and outflow openings.

A method and device to apply a cold plasma to a substance at a treatment surface of a patient to cause electroporation of the substance into cells of the patient. The substance can be previously applied to the treatment surface. Alternatively, the substance can be placed in a foam-like material within a tip that passes the cold plasma from the cold plasma device to the treatment area. The tip can be a cannula device with an aperture at the distal end. The cannula device can also have apertures along a portion of the length of the cannula device.

The present invention provides a hubbed dual cannula device for extracting a fluid sample from a closed container. The device comprises a housing hub, two substantially parallel needles, a venting valve and a hydrophobic membrane, and may be used effectively to extract a fluid sample from a sealed container, such as a vacuum tube, without damaging the cellular components or activating platelets in the fluid sample. Also provided are methods for using the disclosed device to extract a fluid sample from a closed container and kits for measuring platelet aggregation using such a device.

Devices, systems, and methods for providing retroperfusion to at least one ischemic tissue in a minimally invasive manner are disclosed. At least some of the embodiments disclosed herein enable an anastomosis to be formed between a vein and an artery without the use of sutures and through a non-invasive procedure. In addition, various disclosed embodiments provide a cannula device comprising a Y-configuration for bifurcating arterial flow between an anastomosis and the underlying artery. The devices, systems and methods herein can further provide simultaneous autoretroperfusion therapy to more than one area of an ischemic tissue.

A liposuction apparatus and method optionally having a sonic or ultrasonic source with an axial lumen passage in which the shaft can be made to reciprocate (oscillate) in a non-rectilinear fashion. The apparatus may also contain the concomitant use of rectilinear reciprocation motion in addition to ultrasonic motion or energy along the shaft of the apparatus. The advantages of the liposuction apparatus are as follows: 1) non-rectilinear single shaft reciprocating cannula, 2) sonic or ultrasonic energy delivered to the distal tip, 3) rectilinear reciprocating cannula with ultrasonic energy along the shaft from the handle, and 4) any of the above reciprocating components powered by excess unused vacuum capacity in the liposuction aspirator (suction engine) apparatus. There are three (3) primary sources of energy applied to the cannula shaft: the first is the oscillating surgeon's arm motion (approximately 1-2 hertz); the reciprocating motion (of about 100 Hz); and the optional concomitant motion as delivered by the ultrasonic energy (e.g. 25 KHz).

The invention relates to a chuck type diameter-variable cannula device and a puncture device. The chuck type diameter-variable cannula device includes a diameter-variable cannula assembly, a lower cover plate and a lower shell; the lower cover plate and the lower shell clamp and fix the diameter-variable cannula assembly, the diameter-variable cannula assembly includes a first valve cannula, a second valve cannula, a third valve cannula and film cannulas wrapping the first valve cannula, the second valve cannula and the third valve cannula, the first valve cannula, the second valve cannula and the third valve cannula are arranged into a ring along the longitudinal axis, and the first valve cannula, the second valve cannula, the third valve cannula and the film cannulas form a hollow channel which allows surgical instruments in and out; the diameter-variable cannula assembly further includes a vortex drive mechanism, and the vortex drive mechanism drives the first valve cannula, the second valve cannula and the third valve cannula to do rectilinear motion in the radial direction to be close to or away from the longitudinal axis. The chuck type diameter-variable cannula device and the puncture device can achieve the change of the diameter of a puncture cannula.

The invention relates to a method and a system of pool culture. The method for regulating water quality of pool complex culture comprises the following steps: the water body discharged from a fish pool (1) inflows into an ecological crab pool (3) after being treated by a biological purifying channel (2), the water body inflows into a water body purifying equipment of clay and ceramsite (4) by power after purifying treatment in the ecological crab pool (3) and finally refluxes into the fish pool (1). The system for regulating water quality of pool complex culture comprises the following steps:arraying a plurality of fish pools (1) and crab pools (3) in a way of juxtaposition with one side provided with a biological purifying channel (2) and the other side is provided with the water body purifying equipment of clay and ceramsite (4); communicating the fish pools (1), the biological purifying channel (2) and the ecological crab pool (3) subsequently through a cannula device (5), wherein,the ecological crab pool (3) is connected with the water body purifying equipment of clay and ceramsite (4) through a water pump (6), the water body purifying equipment of clay and ceramsite (4) is connected with the fish pool (1) through an inlet channel (7). The invention is the culturing method for regulating complex water quality, which has the characteristics of low cost, low energy consumption and high efficiency and conforms to the pool culturing model of ecological principle.

The present application concerns a cannula device for mounting in a base part (9) comprising a housing (Ia, 16) and at least one membrane (4) together defining at least 15 one cavity, the cannula device further comprises a cannula (3) mounted in the housing and being in fluid communication with the at least one cavity, said cannula device is provided with means (5) for attaching the device to the base part (9) on the proximal side of the device.

The invention relates to a trachea cannula device suitable for bronchoscope operation emptysis rescue and difficult airways. The trachea cannula device comprises a trachea cannula, a trachea cannula inner core and a guide wire, wherein the trachea cannula and the trachea cannula inner core have radians; a respirator pipeline interface is tightly inserted into the upper end of the trachea cannula; the trachea cannula inner core is sleeved into a trachea cannula cavity of a corresponding inner diameter; the lower section of the trachea cannula inner core extends out of the lower end of the trachea cannula; a hollow guide wire tube which is about 2.5 millimeters in diameter passes through the tube cavity of the cannula inner core; the lower end of the guide wire tube is connected and communicated with a guide wire head; and the lower end of the guide wire tube passes through an interface plug, and is communicated with the outside. The device disclosed by the invention can be used for completing tracheal intubation quickly and effectively for complicated airway massive haemorrhage during bronchoscope operation, and is suitable for an anaesthetist to perform endermic reverse tracheal intubation on difficult airways simultaneously. In an intubation process, operation is easy, convenient, rapid and accurate, and wounds are small. By means of trachea cannulas of different specifications, the device is suitable for infants to adults. The device is particularly suitable for being prepared for hospitals of all stages for performing bronchoscope operation and/or general anesthesia surgery.

The invention discloses an auxiliary incision-free anus cannula device, relates to a peritoneoscope surgical operation auxiliary instrument and provides an auxiliary incision-free anus cannula device which has the advantages that no scar is left on the abdomen, the postoperative pain is reduced to the greatest extent, the length of stay is shortened, the expense is reduced and the like. The auxiliary incision-free anus cannula device is provided with an outer cannula, a guide tube, a rear cover and an apparatus hole cover, wherein external threads are formed at the tail end of the outer cannula; the outer cannula sleeves the guide tube; internal threads which are formed at the rear cover are in threaded connection with the external threads at the tail end of the outer cannula; a conical part is arranged at the front end of the guide tube; a grip handle is arranged at the rear end of the guide tube; an apparatus hole is formed in the tail of the rear cover; internal threads at the apparatus hole cover are in threaded connection with external threads at the tail of the rear cover. A peritoneoscope lower left colon and rectum resection operation is completed without an abdomen wall auxiliary incision, the minimally invasive aim is achieved, an abdomen wound is more attractive, the occurrence of postoperative incisional hernia, incision infection, dehiscence, incision tumour abdomen wall plantation and the like is avoided, and the intestinal canal adhesion probability is reduced. The auxiliary incision-free anus cannula device has the advantages that tumour-free operation is realized, the operation is simple and convenient, and safety and reliability are realized.

A vascular access device (100) suitable for evacuating air from a blood vessel having a vessel wall comprising a cannula (105) for insertion into the blood vessel; wherein an anchoring organ (101) having a first end (102) and a second end (112), the first end (102) of the anchoring organ being fixed to a first end (103) of the cannula (105), and the anchoring organ (101) being adapted to alter its shape between an out-spread shape and a streamlined shape upon a movement being applied to it;-a linkage (119, 120, 131, 132, 141, 142) comprising:-a first sleeve portion (119) being slideable along the cannula (105);-a second sleeve portion (120) being fixedly attached to the cannula (105);-a first outer arm (131) and a second outer arm (132), symetrically arranged relatively to the cannula (105), and opposite each other, the first outer arm (131) and the second outer arm (132) being mechanically connected to the first sleeve portion (119) and being pressable by a persons fingers, wherein the length of the arms is adapted to transfer a movement from the pressing to a movement stretching the anchoring organ (101).