55 results about "Single chamber" patented technology

The invention discloses a pediatric infusion protection device, a using method and a flexible fixing module, the flexible fixing module comprises an antibacterial silica gel buffer layer, an array type pressure sensor and an inflation adjusting unit, and a breathable micro-convex structure is arranged on the inner side of the antibacterial silica gel buffer layer; the array type pressure sensors are embedded into the buffer layer to form 2 * 3 matrix distribution, the inflation adjusting unit comprises a miniature air pump and a multi-cavity air bag, and partition pressure adjustment is achieved through air conveying pipeline connection; the central control module can upload monitoring data such as pressure, temperature and puncture point states to a medical care management terminal through Wi-Fi, centralized management of information of multiple child patients is achieved, and the workload of one-by-one inspection of medical staff is reduced; in addition, the medical staff can remotely send an instruction through the terminal to control the inflation adjusting unit to carry out single-cavity / multi-cavity pressure fine adjustment, the fixing requirement of the child patient after movement can be met without field operation, and the management efficiency is improved.

The present disclosure sets forth a peritoneal dialysis (“PD”) system, which allows the lowest operating ambient temperature of the PD fluid to be decreased without modifying the heater power or the flow rate during treatment. The system includes a PD machine or cycler. Fresh PD fluid is delivered via a single or dual lumen patient line to the patient and is first heated to a body fluid temperature, e.g., 37° C. Before fill, the PD fluid is preheated by pumping the fresh PD fluid from a solution bag, through the inline heater, into an empty solution bag, and back until the fresh PD fluid is heated to a pre-determined temperature. This allows the initial temperature of the fresh PD fluid in the solution bag to be lower.

The utility model provides a bottom disc device for preventing and fixing enterostomy prolapse, including bottom disc, the outer edge part of symmetrical setting in the bottom disc periphery, the lock hole formed on the outer edge part, transparent ring pad, set in the center of bottom disc, set in the upper convex of transparent ring pad top, a plurality of anti -drop hole is formed on the upper convex, set in transparent ring pad top and in the limiting ring of outer periphery of upper convex, connecting structure is connected with outer edge part, makes bottom disc with transparent ring pad fixed in patient stoma, buckle structure, encircles the top of bottom disc and is used for with limiting ring buckle connection for fixing transparent ring pad. The utility model discloses through the softness of silica gel material, the unobstructedness of anti -drop hole and the protectivity of disinfecting cotton, effectively prevent the prolapse and infection of stoma, can also fix the prolapse of enterostomy, improve the comfort of patient, especially applicable to single cavity stoma and ileostomy.

Various embodiments of the present invention comprise a single-chamber collapsible and expandable prosthetic valve implant device with an elevated valve section and comprising the following capabilities: (1) preservation of native valve functionality; (2) initial preservation of native valve functionality with subsequent full replacement of native valve functionality; (3) full replacement of native valve functionality; and / or (4) mitigation of the prolapsing distance of the dysfunctional leaflets by preventing the anterior excursion of the prolapsing leaflets above the upper annular surface and into the left atrial chamber in order to preserve native leaflet functionality for as long as possible. The expanded and implanted device does not extend beyond the boundaries of the subject heart chamber, e.g., the left atrium, thereby enabling the preservation of any remaining native valve functionality with subsequent full replacement of native valve functionality if and when needed.

The device for testing pacemakers in static and extremely low frequency magnetic fields comprises an Agar phantom (6) irradiated by an electromagnetic field source (5) and at least one three-axis static magnetic field sensor (4a) and at least one three-axis alternating magnetic field sensor (4b). These are placed at the same distance from the pacemaker under test (3) to monitor the intensity, direction and spatial distribution of the magnetic field generated by the electromagnetic field source (5) in the area of ​​a single-chamber or dual-chamber tested pacemaker (3) placed in the Agar phantom (6). A test pulse generator (1) is connected to the single-chamber pacemaker (3) by one wire or to the dual-chamber pacemaker (3) by two wires and a response sensor (2) is connected by an electrode to sense the response of the pacemaker (3) in real time. The generator (1), the static magnetic field sensor (4a), the alternating magnetic field sensor (4b) and the response sensor (2) are connected by wires to the communication module (7) and wired or wirelessly connected to a computer (8) for processing, analyzing and visualizing the measured data.

The single-cavity self-balancing support for the bridge comprises a support body made of an elastic material, a sealing cavity is formed in the support body, and the sealing cavity is filled with a pressure-bearing medium; the support provides reliable support in the vertical direction by utilizing the flow characteristic of a pressure-bearing medium and the deformation capacity of an elastic material of the support, and meets the requirement of bridge displacement in the horizontal direction. The multiple support bodies can be communicated in the transverse bridge direction or the longitudinal bridge direction through the communicating pipes to form a supporting system, pressure-bearing media circulate among the supports, automatic balance adjustment is achieved, and all the supports are stressed in a balanced mode. Even if the phenomenon of uneven stress occurs under the long-term action of the load, the balance state can be recovered by adjusting the pressure of the pressure-bearing medium, and the stress uniformity, safety and durability of the bridge structure are improved.

Described are methods, systems, devices for facilitation of intraluminal medical procedures within the neurovasculature. A catheter advancement device includes a flexible elongate body having a proximal end, a distal end, and a single lumen extending therebetween. The flexible elongate body has a proximal segment, an intermediate segment, and a tip segment. The proximal segment includes a hypotube coated with a polymer. The intermediate segment includes an unreinforced polymer having a durometer of no more than 72D. The tip segment is formed of a polymer different from the intermediate segment and has a durometer of no more than about 35D and a length of at least 5 cm. The tip segment has a tapered portion that tapers distally from a first outer diameter to a second outer diameter over a length of between 1 and 3 cm.

The application discloses a crankcase, which comprises a crankcase body and a cylinder body. The cylinder body is formed on one side of the crankcase body and communicates with the crankcase body. A push rod chamber is formed on the top of the cylinder body. The push rod chamber comprises a reinforcing part, a first push rod chamber and a second push rod chamber which are formed by the reinforcing part. An oil return cavity and an oil return hole are formed in the first push rod chamber and the second push rod chamber, and a double oil return hole structure is formed. The application has the beneficial effect that the push rod chamber is divided into the first push rod chamber and the second push rod chamber by the reinforcing part, the original single chamber is divided into double chambers, the strength and rigidity of the push rod chamber are improved, deformation after long-term use is avoided, the service life of the crankcase is ensured, and the reinforcing part increases the heat dissipation area to transfer part of the heat generated by the piston in the cylinder body, thereby preventing the push rod chamber from deforming.

The needle cylinder assembly comprises a needle cylinder, a needle head and a needle head, a single cavity is formed in the needle cylinder, and freeze-dried powder is pre-filled in the single cavity; and the plunger is accommodated in the needle cylinder in a reciprocating motion manner. Wherein the needle cylinder is made of plastic, and a needle is integrally formed on the needle cylinder, and the needle is also made of plastic. The needle cylinder assembly is simple in structure, easy to operate and convenient to recycle.

A compression wave massage device for body parts is described, particularly for erogenous zones such as the clitoris, comprising a pressure field generation device and a drive device. The pressure field generation device has at least one cavity with a first end and a second end, located opposite the first end and distanced from said first end, with the first end being provided with at least one opening for placement on a body part. The drive device causes a change of the volume of at least one cavity between a minimal volume and a maximal volume such that in at least one opening a stimulating pressure field is generated. The cavity is formed by a single chamber, and the ratio of the volume change to the minimal volume is not below 1 / 10, preferably not below ⅛.

The utility model discloses a separable double-layer bottle body, which belongs to the technical field of packaging bottles, and comprises an upper cover used for separating and storing partial components, a middle cover used for being matched and assembled to realize a sealing effect, and a bottle body used for storing residual components, the upper cover is movably mounted at the upper end of the middle cover, and the bottle body is movably mounted at the lower end of the middle cover; the bottom of the middle cover is provided with a communication opening used for communicating the upper cover with the bottle body through adjustment. The structure for communicating the upper cover with the bottle body by adjusting the communicating opening is arranged at the bottom of the middle cover, so that different components can be separated for sealed storage on the basis that the communicating opening is closed by the upper cover, and the upper cover can be manually adjusted to enable the communicating opening to communicate with the upper cover and the bottle body when necessary; and the problem that a traditional sealing bottle can only completely mix and store all the components in a single cavity, and part of the components lose efficacy due to the fact that part of the components are mixed in advance is solved.

Described are methods, systems, devices for facilitation of intraluminal medical procedures within the neurovasculature. A catheter advancement device includes a flexible elongate body having a proximal end, a distal end, and a single lumen extending therebetween. The flexible elongate body has a proximal segment, an intermediate segment, and a tip segment. The proximal segment includes a hypotube coated with a polymer. The intermediate segment includes an unreinforced polymer having a durometer of no more than 72D. The tip segment is formed of a polymer different from the intermediate segment and has a durometer of no more than about 35D and a length of at least 5 cm. The tip segment has a tapered portion that tapers distally from a first outer diameter to a second outer diameter over a length of between 1 and 3 cm.

The present invention provides an inner membrane tube bronchial catheter. The head of the main ventilation tube is equipped with a main ventilation port and a lateral ventilation port, while the tail is provided with two ventilator interfaces. One of the two ventilation ports can be selectively connected to either ventilator interface, thereby forming a membrane ventilation lumen. A front sealing cuff and a rear sealing cuff are respectively arranged at the anterior and posterior sides of the lateral ventilation port, and they are each connected to an inflation tube and an inflation valve. During thoracic surgery, the front sealing cuff is inserted into one bronchial orifice, while the rear sealing cuff remains within the main airway, with the lateral ventilation port oriented toward the opposite bronchial orifice; by inflating or deflating the membranous ventilation tube, lung isolation can be easily achieved, thereby minimizing the catheter's outer diameter, reducing intubation-related injury, and providing a larger ventilation chamber with lower airway resistance when ventilating either lung. Moreover, suctioning and bronchoscopic examination are made more convenient. After the surgery, the front sealing cuff can be deflated and retracted into the main airway, thereby converting the device into a single-lumen endotracheal tube. The catheter has a simple design, is cost-effective, has a low complication rate, and holds significant potential for clinical application.

The invention discloses a double-cavity anti-leakage drainage tube which comprises an annular self-adhesion base plate and an eccentric funnel connecting plate arranged below a middle through hole of the annular self-adhesion base plate, a near-end double-cavity drainage tube is connected below a ventage of the eccentric funnel connecting plate, a detachable drainage tube is arranged in a first cavity of the near-end double-cavity drainage tube, and a second cavity of the near-end double-cavity drainage tube is connected with a second cavity of the annular self-adhesion base plate. A plurality of side holes are formed in the side wall of the top of the detachable drainage tube, the bottom of the double-cavity drainage tube is connected with a far-end single-cavity drainage tube, a drainage tube clamp is arranged on the far-end single-cavity drainage tube, and the tail end of the far-end single-cavity drainage tube is connected with a negative-pressure or normal-pressure drainage bag. By means of the near-end double-cavity drainage tube, it is avoided that exudate is excessively accumulated in the eccentric funnel connecting disc when a user sideways, the liquid exudating around a wound flowing down from the outer wall of the detachable drainage tube is collected through the second cavity, pollution to clothes and bedding and wound tissue infection caused by exudation around the drainage tube can be effectively reduced, wound healing is promoted, and the wound healing rate is increased. And the times of dressing change and the pain of patients are reduced.

Disclosed is a self-expanding cannula, systems using such cannulae, and methods of their use. The cannulae may comprise single lumen cannula (“SLC”) configurations and double lumen cannula (“DLC”) configurations, and include at least a first cannula and a self-expanding wire frame attached to the first cannula. Self-expanding wire frame is automatically expandable from a compressed state (providing a reduced cannula diameter as it is moved through a patient's body to the site at which it is to be deployed) to an expanded state (which increases the diameter of the cannula to the diameter intended for its normal use). The expanded wire frame provides radial support to prevent a drainage canal (whether a patient's blood vessel or a portion of the system inserted into the patient's blood vessel) from collapsing as fluid is drained from the patient.

The present application belongs to the technical field of polymer material forming, and relates to a medical catheter, in particular to a medical catheter forming die, a melt head device and a catheter forming process. The variable cross-section double-lumen tube die comprises a flat-elliptical covered double-lumen catheter forming runner one and a tearable double-lumen tube forming runner two. The on-off of the covered extrusion channel is controlled by a swing cylinder, so that the single-lumen tube body and the double-lumen tube body are integrally formed. The average breaking force at the stepped cross-section is between 160-180 N, avoiding the risk of catheter breakage during use. The die structure is simple and easy to operate. The melt head device can realize one-step forming of the stepped and head-end melt head of the catheter, avoiding unstable quality caused by two operations, and making the product consistent. The medical catheter forming process is simple and easy to operate, does not require professional technical personnel, has low cost and low energy consumption, is non-toxic and odorless, and can significantly improve production efficiency.

A noise-reducing gas passage device with a resonant chamber, including a casing with an air intake and air outlet, which forms the resonant chamber and other chambers other than the resonant chamber. The other chambers may consist of a single chamber or multiple chambers. The other chambers including multiple chambers have a first chamber and a second chamber. The resonant chamber serves as the primary noise-reducing structure within the gas passage device, configured to be a cavity formed by the interior space of the casing. The noise-reducing structure also includes a neck, configured to communicate the resonant chamber with the other chambers, facilitating the transmission of sound waves into the resonant chamber for energy conversion. By controlling the position of the resonant chamber and the parameters of both the resonant chamber and the neck, maximal noise reduction in the noise-reducing gas passage is achieved.

This utility model relates to the field of medical devices, specifically to a ureteral stent capable of carrying particles, comprising: a tube body and a particle chamber structure; the front and rear ends of the tube body are curved into a pigtail shape; the tube body is a single through-hole serving as a drainage cavity; several drainage holes are provided on the curved portions of the front and rear ends of the tube body; a marker ring is provided on the tube body at the junction of the curved portion and the tube body; several radiopaque rings are provided on the tube body between two marker rings; the particle chamber structure is integrally formed with the tube body, and the particle chamber structure includes several particle chambers distributed laterally along the tube body. Each particle chamber is a cylindrical cavity, with one end of the cylindrical cavity serving as a particle placement channel. The entrance to the particle placement channel is sloped, and the bottom of the slope is a baffle to prevent the radioactive particles from slipping out. The cylindrical cavity is filled with radioactive particles. This utility model combines a ureteral stent with radioactive particles, and uses a single particle chamber with several particle chambers arranged laterally, making it simple to operate and convenient to use.

The utility model discloses an ovum collecting needle which comprises a puncture needle, a handle sleeved outside the puncture needle, a connecting pipe communicated with the puncture needle, a collecting container communicated with the connecting pipe and used for storing ovum cells, and a pipe joint used for being connected with negative pressure equipment, the pipe joint is communicated with the collecting container, a pressure stabilizing seat is arranged at the position of the pipe joint, and a pressure stabilizing valve is arranged in the pressure stabilizing seat. The pressure maintaining valve is communicated with the interior of the pipe connector so as to adjust suction force during negative pressure suction, and a three-way connector is arranged on the working channel and used for being externally connected with an injector. The pressure stabilizing valve is arranged in front of the negative pressure suction force entering the working channel, so that the negative pressure suction force is prevented from being excessively large instantaneously, the pressure stabilizing valve is a pressure stabilizing barrier before the negative pressure suction force enters the working channel, self-pressure-stabilizing adjustment of the negative pressure suction force before the negative pressure suction force enters the working channel is achieved, the ovum taking safety is improved, and the quality of ovum cells is improved; under the condition of small trauma surface single-cavity ovum collection, the ovum collection needle is externally connected with an injector through the three-way connector to achieve washing, so that ovum cells are loosened and are easier to suck.

The utility model discloses a feeding device for fastener processing, which relates to the technical field of feeding equipment and comprises a base, the top end of the base is connected with a support with a U-shaped section, one side of the support is provided with a transverse plate, two sides of the transverse plate are provided with connecting plates, and one side of each connecting plate is connected with a first rotating rod. According to the utility model, the cross-shaped partition plate is arranged in the hopper to divide the interior of the hopper into a plurality of independent cavities, meanwhile, the cover body is arranged at the outlet of the hopper, and the fan-shaped groove is formed in the surface of the cover body, so that only screws or bolts in a single cavity can be poured into the feed port of the thread rolling machine at one time; and the cover body can be rotated, so that the fan-shaped groove can be rotated to the next independent cavity to continue feeding, and the situation that screws or bolts and the like in the hopper are completely poured into a feeding port of a thread rolling machine at a time, so that blockage or thread rolling wheel jamming is caused, and the machining efficiency of the screws or the bolts is affected is avoided.

The application provides a high-voltage reinforced composite double-cavity air cylinder, which comprises an outer cavity and an inner cavity, and the inner cavity is arranged in the inner part of the outer cavity, wherein after independent and simultaneous inflation, the outer cavity and the inner cavity are mutually impacted and pressed, and the application meets the double-cavity requirement, reduces the layout space of multiple single cavities of a whole vehicle and reduces the cost and weight.

The application discloses a liquid treatment supporting device for a laboratory, a supporting frame for supporting a detachable treatment pipe assembly, the treatment pipe assembly comprising a plurality of pipe sections, each pipe section comprising a pipe body, an upper connecting sleeve arranged above the pipe body and a lower connecting sleeve arranged below the pipe body, and the adjacent pipe bodies being connected through the upper connecting sleeve and the lower connecting sleeve; the funnel part is provided with flow guide ribs, which spirally surround an overflow collecting hopper from top to bottom to form 12 spiral flow guide channels, the inclination of the channels gradually increases from 15°-25° to 45°-60° from top to bottom, and the liquid flows along the preset spiral path smoothly during injection through the structure, the initial impact is slowed down by the slow inclination of the upper part to avoid turbulent flow, and the flow is accelerated by the steep inclination of the lower part to prevent stagnation. The local accumulation problem of the filling medium caused by the traditional single-cavity funnel is effectively eliminated, the separation efficiency is improved by 25%, and the device is particularly suitable for high-precision separation scenes such as trace analysis.

VfA cardiac therapy uses an implantable medical device or system. The implantable medical device includes a tissue-piercing electrode implanted in the basal and / or septal region of the left ventricular myocardium of the patient's heart from the triangle of Koch region of the right atrium through the right atrial endocardium and central fibrous body. The device may include a right atrial electrode, a right atrial motion detector, or both. The device may be implanted completely within the patient's heart or may use one or more leads to implant electrodes in the patient's heart. The device may be used to provide cardiac therapy, including single or multiple chamber pacing, atrioventricular synchronous pacing, asynchronous pacing, triggered pacing, cardiac resynchronization pacing, or tachycardia-related therapy. A separate medical device may be used to provide some functionality for cardiac therapy, such as sensing, pacing, or shock therapy.

This invention discloses a peripheral shockwave balloon system, belonging to the field of medical devices. It includes a control unit, a handle, a balloon, a dressing mechanism, and a catheter. One end of the catheter slides through the dressing mechanism and connects to the handle. The other end of the handle is connected to the control unit, and the other end of the catheter extends into and connects to the balloon. The dressing mechanism is located on one side of the control unit. This invention enables rapid drug delivery after the balloon reaches the lesion site, avoiding the limitations of traditional balloons that rely on surface coatings or a single chamber to hold the drug, thus ensuring the amount of drug delivered. The dressing mechanism also allows for rapid flushing and dressing changes after a single drug administration, facilitating precise control of the delivery sequence and dosage of multiple drugs according to treatment needs during combined drug administration.

Adapters, connectors, and tubing provide for connection of a blood pressure cuff to a pressure source, such as a patient cardiac monitor. Adapters, connectors, and tubing are configured to allow a patient to be connected and disconnected from monitoring equipment without removing the blood pressure cuff from the patient's appendage. Among other aspects, adapters may include various configurations that allow connection of: single lumen tubes to single lumen tubes or equipment; single lumen tubes to dual lumen tubes or equipment; dual lumen tubes to dual lumen tubes or equipment; and dual lumen tubes to single lumen tubes or equipment. Tubes may include dual lumen tubing where the lumens are separated by a web, and the web maintains the spacing between the connectors attached to the lumens.

Described are methods, systems, devices for facilitation of intraluminal medical procedures within the neurovasculature. A catheter advancement device includes a flexible elongate body having a proximal end, a distal end, and a single lumen extending therebetween. The flexible elongate body has a proximal segment, an intermediate segment, and a tip segment. The proximal segment includes a hypotube coated with a polymer. The intermediate segment includes an unreinforced polymer having a durometer of no more than 72D. The tip segment is formed of a polymer different from the intermediate segment and has a durometer of no more than about 35D and a length of at least 5 cm. The tip segment has a tapered portion that tapers distally from a first outer diameter to a second outer diameter over a length of between 1 and 3 cm.

The present disclosure sets forth a peritoneal dialysis ("PD") system, which allows the lowest operating ambient temperature of the PD fluid to be decreased without modifying the heater power or the flow rate during treatment. The system includes a PD machine or cycler. Fresh PD fluid is delivered via a single or dual lumen patient line to the patient and is first heated to a body fluid temperature, e.g., 37°C. Before fill, the PD fluid is preheated by pumping the fresh PD fluid from a solution bag, through the inline heater, into an empty solution bag, and back until the fresh PD fluid is heated to a pre-determined temperature. This allows the initial temperature of the fresh PD fluid in the solution bag to be lower.

Device for the continuous drainage of stool from a patient's rectum into an external bag-like collection vessel and / or for closing the rectum, comprising a) a single-chambered balloon (8) with a balloon element forming only a single fillable intra-rectal chamber (48), or b) a double-chambered inflatable balloon (8) having an intra-rectal section (9) and a trans-anal section (10), wherein the single- or double-chambered balloon (8) is fixed to a single supporting carrier body (41), preferably manufactured in one piece, which has an inner lumen, characterized in that the carrier body (41) comprises an olive-shaped funnel element (3) and a connector element (4), as well as a central segment (25) arranged between them, wherein the in situ trans-anal placed,The central segment (25) of the support body (41) has such elastic and self-righting properties that it collapses in a lumen-closing or -constricting manner when a small external force is applied, and spontaneously returns to its lumen-opened circular original shape due to its elastic restoring force when the external force decreases.

A gas circulation system is disclosed for performing robotically assisted surgical procedures in a surgical cavity of a patient, which includes a multi-lumen tube set including a dual lumen portion having a pressurized gas line and a return gas line, and a single lumen portion having a gas supply and sensing line, a valve sealed access cap for cooperative reception with a first robotic cannula and having an inlet path for communicating with the gas supply and sensing line of the tube set, and a gas sealed access cap for cooperative reception with a second robotic cannula and having an inlet path for communicating with the pressurized gas line of the tube set and an outlet path for communicating with the return gas line of the tube set.