271 results about "Side branch" patented technology

The present disclosure provides devices and methods to identify locations of side branches in a series of intravascular images (e.g., a pre-treatment IVUS pullback, a post-treatment IVUS pullback, or the like) to assist with co-registering the IVUS images with an extravascular image (e.g., angiogram, or the like) or with another set of IVUS images. The present disclosure further provides devices and methods for training a machine learning (ML) model to infer side branch locations from IVUS images and an analytic algorithm for extracting frames from the IVUS images representing side branches.

The present disclosure provides to generate a 3D visualization of a vessel from intravascular ultrasound (IVUS) images. In particular, the present disclosure provides to reduce jitter between frames of an IVUS recording to provide a smoother appearance of a longitudinal view of the vessel from the IVUS image frames and to construct a 3D visualization of the vessel from the jitter compensated IVUS image frames.

A computer is caused to perform processing of: acquiring a plurality of medical images generated based on signals detected by a catheter inserted into a lumen organ while the catheter is moving a sensor along a longitudinal direction of the lumen organ, the lumen organ including a main trunk, a side branch branched from the main trunk, and a bifurcated portion of the main trunk and the side branch; and recognizing a main trunk cross-section, a side branch cross-section, and a bifurcated portion cross-section by inputting the acquired medical images into a learning model configured to recognize the main trunk cross-section, the side branch cross-section, and the bifurcated portion cross-section.

The present disclosure provides to generate a side branch mask from an extravascular image of a vessel using an ensemble of machine learning (ML) models. The side branch mask can be generated by inferring, using several initial ML models, indications of side branches from an image frame and inferring, using a post-processing ML model, the side branch mask from the indication of side branches.

The utility model discloses a thrombus aspiration plugging sheath system based on a special-shaped cavity, which comprises a vacuum device, an aspiration plugging sheath, an aspiration plugging sheath and an aspiration plugging sheath, and is characterized in that the vacuum device comprises a negative pressure needle cylinder and a piston buckle arranged on the side wall of the negative pressure needle cylinder; the balloon sheath tube comprises a tube body, a balloon used for blocking is arranged at the far end of the tube body, a connector connected with the vacuum device is arranged on the side of the near end of the tube body in a supporting mode, and a plurality of special-shaped cavities are formed in the tube body; the thrombus dragging instrument is used for blocking blood flow to reduce blood loss during thrombus suction and intercepting the thrombus to prevent the thrombus from escaping when the thrombus is dragged; the vacuum device is arranged on the side branch of the near end of the balloon sheath tube, and the thrombus dragging instrument is arranged in the balloon sheath tube. According to the embodiment of the utility model, the balloon filling opening and the thrombus suction opening are formed in the catheter body, a multi-cavity structure is adopted, the balloon sheathing canal blocks blood flow, and the thrombus dragging instrument is matched with a vacuum device to suck, drag and take out thrombus.

The utility model relates to a moss column. The moss column comprises a first slender main body which is hollow, has an open top end and a closed bottom end, and is provided with a plurality of through holes in the side wall; a second elongate body; the third main body is in a funnel shape with a wide upper part and a narrow lower part; the bottom of the first elongated body is connected to the top of the second elongated body, and the bottom of the second elongated body is connected to the upper half part of the third body; and the outer surfaces of the first elongated body and the second elongated body are wrapped by a water absorbing material. Further, a support arm is attached to the second elongated body, and a support leg is snapped to the third body. According to the utility model, the water loss and evaporation speed can be reduced, the stability of the moss columns can be improved, and plant lateral branches can be supported.

The invention provides a disposable triple three-way plug valve which comprises a plug valve assembly and three plug switching mechanisms, and the plug valve assembly comprises a main valve body, three switching pipes and three side branch pipes; wherein the main valve body is communicated with the three switching pipes, and the three side branch pipes are respectively communicated with the outer sides of the three switching pipes; the rotary handle is pressed to drive the three-way groove and the straight-through groove to move through the plunger, so that switching operation of the three-way groove and the straight-through groove is rapidly completed in a pressing mode, the operation efficiency is improved, the cut-off time is effectively shortened, then the rotary handle is rotated to be limited through the limiting mechanism, and the safety is improved. The overall stability of the triple three-way plug valve after the switching operation is completed is ensured; the mixing mechanism is used for guiding the liquid medium converged into the main valve body through the side branch pipe, and the converged medium and the medium flowing in the main valve body are mixed in the guiding process, so that the mixed liquid conveying effect is improved.

The invention discloses an automatic dosing device and a processing technology for preparing meat products, and relates to the technical field of meat product processing, comprising a base, a preparing tank and a processing tube are arranged above the base, the processing tube is coaxially arranged with the preparing tank, a crushing and kneading assembly is installed inside the processing tube, and the crushing and kneading assembly comprises a mounting frame; when the rotating tube rotates, the kneading roller can crush and crush the raw materials; at the same time, the crushing blade extending from the end of the side branch pipe can effectively crush and refine the seasoning; in this process, a small air pump can be controlled to start, and the crushed seasoning can be sucked into the rotating tube and the mixing box through the through hole by utilizing the negative pressure effect, so as to achieve mixing of the seasoning; when the rotating tube moves to the inside of the preparing tank, under the action of the reset spring 1, the piston rod is connected to the kneading roller and moves outward synchronously, so that the kneading roller can contact the meat product at the bottom of the preparing tank to perform the kneading operation.

Endovascular prostheses used to treat diseased blood vessels, such as arteries, are disclosed. In some embodiments, the endovascular prosthesis is configured to be implanted within the diseased blood vessels adjacent a diseased section. The endovascular prosthesis may include a selectively openable internal duct configured to sealingly receive an expandable endovascular prosthesis that extends into a side branch vessel of the diseased blood vessel.

The utility model relates to the technical field of power transmission line inspection, in particular to an automatic obstacle crossing type power transmission line inspection device which comprises a U-shaped walking frame, a plurality of telescopic assemblies are arranged on the bottom face of one side support located on the upper portion of the U-shaped walking frame in a sliding mode in the walking direction of the U-shaped walking frame, and the telescopic assemblies can automatically and longitudinally ascend and descend. Mounting plates are detachably connected to the bottom ends of the telescopic assemblies, walking wheels capable of rotationally abutting against the power transmission lines are rotationally arranged below the bottom faces of the mounting plates, and inspection parts capable of shooting and recording the power transmission lines are arranged on the left side wall and the right side wall of each mounting plate; the left side wall and the right side wall of one side branch, located on the upper portion, of the U-shaped walking frame are each provided with an obstacle monitoring piece capable of monitoring obstacles of the power transmission line. According to the utility model, on the premise that no extra obstacle removing device is needed to remove the obstacles on the power transmission line, the three walking wheels successively cross the obstacles to complete obstacle avoidance, automatic obstacle crossing is realized while the inspection continuity is not influenced, and the overall inspection efficiency is improved.

The present invention provides an artificial blood vessel that is resistant to bending and can be punctured at will. The artificial blood vessel includes a blood vessel wall and a blood vessel cavity; according to the radial outward direction of the blood vessel cavity, the blood vessel wall includes a blood vessel wall inner layer, a blood vessel wall middle layer and a blood vessel wall outer layer that are sequentially connected in a bonded manner; the blood vessel wall middle layer includes a puncturable support layer with a grid structure; the puncturable support layer includes a support rib trunk and branch lines extending from the side surface of the support rib trunk and side branches extending from the branch line surface. The artificial blood vessel is provided with a silica gel or polyurethane grid structure in the middle layer, so that the support rib trunk has the performance of being puncturable at will, and the bending resistance of the tube body is improved, and the effective puncture area of ​​the tube body is increased; the grid structure in the middle layer of the blood vessel wall can provide the blood vessel wall with automatic pinhole closing performance through the mutual auxiliary pulling effect of the support rib trunk, branch lines and side branches, thereby reducing the risk of blood leakage in the blood vessel wall after the puncture needle is pulled out.

This heat pump cycle device comprises a compressor (11), an upstream-side branch part (13a), heating parts (12, 121, 60), heating-part-side flow rate adjustment parts (16a, 16b, 16c), a bypass passage (21c), a bypass-side flow rate adjustment part (16d), and an ejector (70, 70a). The ejector (70) has a nozzle part (71) that accelerates and sprays refrigerant flowing out from the bypass passage (21c), and a body part (72) in which there is formed a refrigerant suction port (721) for suctioning the refrigerant in a gas-liquid two-phase state flowing out from the heating-part-side flow rate adjustment parts (16a, 16b, 16c). The ejector (70) raises the pressure of the refrigerant in a refrigerant outlet (723) so as to be higher than the pressure of the refrigerant in the refrigerant suction port (721) by using a shock wave action.

This document provides implantable intraluminal stent graft medical devices. In some embodiments, the stent graft devices provided herein are implantable in bodily conduits that have side branches, and the stent graft devices are operable to allow the flow of fluids between the conduit and the side branches. In some embodiments, the walls of the stent graft devices provided herein include compliant channels which allow for fluid communication between the interior and the exterior of the stent graft devices. In some embodiments, the compliant channels are configured to inhibit or reduce tissue ingrowth, tissue bridging, and / or endothelialization.

The utility model relates to the technical field of medical apparatus and instruments, and provides a catheter device with needling prevention and distance fixing functions, which comprises a needle seat shell and a tearable seat, a needle tube is connected onto the needle seat shell, a catheter seat and a needling prevention protection module are mounted in the needle seat shell, and the tearable seat is connected with a tearable needle tube. The catheter seat is connected with a catheter matched with the needle tube, the needle tube is provided with a fixing ring matched with the anti-needling protection module, the needle seat shell is provided with a clamping groove used for fixing the catheter seat and a sliding groove used for moving the catheter seat, and the end of the needle seat shell is provided with a guide arm and a positioning arm. Through the cooperation of the fixing ring and the anti-acupuncture protection module, the needle head part is fixedly contained in the anti-acupuncture protection module when the needle tube is drawn out, the anti-acupuncture effect is achieved under the condition that passing of a guide wire is not affected, and the catheter base and the lateral branch connector for fixing the distance are of an integrated structure; and the guide arm, the positioning arm and the tearable seat can be assembled in positive and negative directions, the structure is simple, and the operation is convenient.

[Problem] To provide a heating coil capable of efficiently quenching a workpiece in a short time, and controlling the depth of a cured layer produced by quenching the workpiece for each height position in accordance with the shape of the workpiece. [Solution] This heating coil (1) comprises: ground parts (2a, 2b) for attaching to an electrode; a pair of support parts (3a, 3b) which are respectively orthogonal to the ground parts (2a, 2b) and are arranged so as to face each other in parallel with each other, and in which distal-end portions are vertically branched; a circumferential upper heating part (4α) which is provided so as to connect the upper-side distal ends of the support parts (3a, 3b); and a circumferential lower heating part (4β) which is provided so as to connect the lower-side distal ends of the support parts (3a, 3b) to each other. A heat release part (R) is formed so as to protrude outward in an upper-side branch portion of the left support part (3a), and a high-frequency current from the ground parts (2a, 2b) is supplied to the upper heating part (4α) via the heat release part (R). [Selected Drawing] Figure 1

The present application discloses a stent graft and a method for navigating the stent graft to a branch vessel, the stent graft comprising a main body and at least one lateral side branch connected to the main body, a stent graft system and a method for implanting the stent graft, including interconnecting the stent grafts.

A delivery system for an implantable device includes an elongate member and a main body coupled to the elongate member. The main body has a main body wall defining a main body lumen and a side branch portal through the main body wall. A guide member extends along at least a portion of the elongate member, into the main body lumen, and through the side branch portal. A guide member retainer assembly includes a retainer coupled to the guide member and defining a retainer eyelet. A release wire extends through a portion of the main body wall and the retainer eyelet to engage the retainer eyelet, restricting the guide member from being retracted along the elongate member by the engagement between the release wire and the retainer eyelet.

The utility model discloses a supporting frame, and relates to the technical field of medical care instruments. The lifting device comprises a movable seat, a supporting column, a lifting column, a supporting plate and a side supporting plate, and is characterized in that the supporting column is fixed to the upper end of the movable seat, a movable cavity for installing the lifting column is formed in the supporting column, and the top of the lifting column penetrates through the top of the supporting column and is fixed to the supporting plate through a corner connector; the upper end of the supporting plate is fixedly provided with a sliding rail allowing the two sliding blocks to slide, the upper ends of the two sliding blocks are in threaded connection with positioning bolts, the upper ends of the two sliding blocks are fixedly provided with side supporting plates for fixing the side portions of the limbs of a patient, and the upper ends of the two side supporting plates are fixedly provided with fixing rings allowing hook-and-loop fasteners to be installed. The supporting height of the supporting plate for supporting the lower limbs of a patient can be accurately adjusted through the lifting column according to the lifting requirement, the adjusted height is detected through the infrared distance measuring sensor, and therefore it is guaranteed that an equipment user accurately knows the lifting height.

A vessel harvesting system removes a target vessel from a patient for use as a bypass. An elongated harvesting instrument inserts into a body along a path of a target vessel which includes at least one side branch. The harvesting instrument includes a cutter for applying thermal energy to sever and cauterize the side branch. An endoscopic camera captures visible-light images from a distal tip of the instrument within a dissected tunnel around the target vessel. A thermal camera captures thermograms coinciding with the visible-light images to characterize a temperature present at respective surfaces in the tunnel. An image processor (e.g., an electronic controller) renders a video stream including the visible-light images and an overlay depicting the temperatures present on at least some of the respective surfaces when applying the thermal energy. A display presenting the video stream and overlay to a user can be an augmented-reality display.

A device for removing stones and foreign bodies from a human cavity including a straight sheath with one or more side branches; said straight sheath including a proximal tube and distal tube with respect to the operator who is holding the device; one or more side branches arise from the proximal tube and said branch or branches share a common lumen with the proximal and distal tubes; at the least, one of the side branches contains a pressure vent in the form of an opening that extends through the wall of the side branch and is sealed to form an airtight channel that extends toward a sealing element assembly. One or more openings at the end of this airtight channel serve as a transposed pressure regulating mechanism and are located and accessible on or near the surface of said sealing element assembly; an operator can regulate the aspiration pressure by covering or uncovering the vent or a portion of the vent.

The present invention is applicable to the technical field of bone defect repair, and provides a preparation method and application of a collateral-modified Gelma hydrogel. The present invention performs collateral modification on the Gelma hydrogel by Fibrinogen, successfully improving the mechanical properties and cell adhesion of the hydrogel scaffold. At the same time, the loading of NELL‑1 protein significantly improves the scaffold's ability to repair bone defects. The Fibrinogen‑Gelma / NELL‑1 hydrogel scaffold constructed by the present invention has shown ideal mechanical properties in relevant characterizations, and has been shown to play a key role in the repair of bone tissue defects in in vitro and in vivo experiments, and has greatly promoted the expression of osteogenesis-related genes. Therefore, the present invention is expected to be applied to clinical treatments related to bone defect repair, such as maxillary sinus bone augmentation and guided bone regeneration (GBR), in the future.

The utility model discloses a T-beam wing plate comb plate slurry leakage processing device which comprises a comb-shaped side mold, a tooth groove is formed in the rear end of the inner side of the comb-shaped side mold, steel bar bodies are clamped in the tooth groove, and slurry stopping rubber strips are arranged between the steel bar bodies in the tooth groove. By arranging the grout stopping rubber strips and the release agent layers, in the using process, after the comb-shaped side formwork is supported outside the T-beam wing plate reinforcing steel bar bodies, the release agent layers are brushed on the inner sides of tooth grooves, then the grout stopping rubber strips are clamped into the inner sides of the reinforcing steel bar bodies in the tooth grooves, and mortar is prevented from leaking out of the reinforcing steel bar bodies during T-beam pouring through the grout stopping rubber strips; meanwhile, the grout stopping rubber strip is convenient to take out and can be recycled, so that the heavy working procedures of manually chiseling away gap stuffing after plugging and form removal and the like are omitted, the labor cost during T-beam pouring is saved, meanwhile, the labor intensity of workers is reduced, the grout leakage prevention effect is very obvious, and the construction efficiency is improved. And the prefabrication quality of the beam body is ensured, and the prefabrication attractiveness of the beam body is also ensured.

An integrated peripheral intravenous (IV) catheter configured for blood draw both at the time of catheter placement and during catheter indwell. The peripheral IV catheter includes a catheter adapter having a catheter configured to be inserted into a patient's vasculature and a side inlet defining a fluid pathway into and out of the catheter. The peripheral IV catheter also includes a side port member having a main branch, the main branch including a distal end configured to couple the side port member to the side inlet of the catheter adapter and a connector portion accessible via a proximal end of the main branch. Additionally, the peripheral IV catheter includes a blood collection adapter removably and directly coupled to the connector portion of the side port member at the proximal end of the main branch. Furthermore, side pore member of the peripheral IV catheter may include a side branch.

The application discloses a multi-connected direct expansion indoor unit system and a control method thereof, which comprises an outdoor unit, a main indoor unit and multiple reference indoor units; the main indoor unit is connected with the outdoor unit through a main liquid-side branch pipe, a main gas-side branch pipe, a main liquid-side connecting pipe and a main gas-side connecting pipe; the secondary indoor unit is connected with the outdoor unit through a secondary liquid-side branch pipe, a secondary gas-side branch pipe, a secondary liquid-side connecting pipe and a secondary gas-side connecting pipe; a first throttling electronic expansion valve is arranged on the main liquid-side branch pipe, and a second throttling electronic expansion valve is arranged on the secondary liquid-side branch pipe; the main indoor unit for cooling or heating a comfortable space and the reference indoor unit for cooling or heating a process space are combined into one refrigeration system, and the refrigeration or demand of each space is controlled according to the production requirement.

The utility model provides a kind of vascular stent, the device includes: first support, first support includes first support unit and first pipe body, first support unit is set on first pipe body, along the length direction of first pipe body extends, and stop and resist the outside wall of first pipe body, first pipe body is distributed with multiple first hollow holes of interval distribution;Second support, second support includes second support unit and second pipe body, second support unit is set on second pipe body, along the length direction of second pipe body extends, and stop and resist the outside wall of second pipe body, second pipe body is distributed with multiple second hollow holes of interval distribution;The end of second support is connected with first support, the lumen of first pipe body is communicated with the lumen of second pipe body.In the utility model, sufficient radial support force is provided while excellent flexibility is guaranteed, the mechanical stress stimulation to blood vessel intima is small, and the long-term patency of main branch and side branch is guaranteed.

The present invention relates to the technical field of hedge trimming, and specifically discloses a self-propelled hedge top side synchronous branch and leaf trimmer, comprising a tractor and a base, a truss provided with an axis one and an axis two, and a transmission mechanism provided between the tractor and the axis one and the axis two; the truss is provided with a side cutter moving blade fixing seat and a top surface cutter moving blade fixing seat, a side cutter is installed on the side cutter moving blade fixing seat, and a top surface cutter is installed on the top surface cutter moving blade fixing seat, and the self-propelled hedge top side synchronous branch and leaf trimmer also includes a side cutting drive assembly and a top surface cutting drive assembly for driving the side cutter and the top surface cutter to operate respectively. The self-propelled hedge top side synchronous branch and leaf trimmer has the function of synchronously trimming the top side of the hedge, has a lifting function to meet the needs of hedge trimming at different heights, and the side angle is adjustable. It has a wide range of promotion and application value.

The utility model belongs to the technical field of evaporators, in particular to a three-way special-shaped pipe fitting for an evaporator, which comprises a main pipe body, the main pipe body sequentially comprises a head pipe part, a straight pipe part and a tail pipe part from head to tail, the head end of the head pipe part is a port and is a linear pipe section, the straight pipe part is a linear pipe section, and the tail end of the tail pipe part is a port and is a bent pipe section. The head pipe part is connected with the straight pipe part through a first bent transition section, the straight pipe part is connected with the tail end part through a second bent transition section, the head pipe part, the straight pipe part and the tail pipe part are of an integrated structure formed by continuously bending pipes, and the side wall of the straight pipe part locally deforms outwards through hydraulic pressure to form a protruding part. And a bypass port communicated with the inner cavity of the straight pipe part is formed in the end part of the convex part through cutting. The three-way special-shaped pipe fitting is simple in structure and low in cost, the special-shaped design is adopted to meet the distribution requirement of a specific fluid path, and it is ensured that the three-way special-shaped pipe fitting has good overall sealing performance and supporting strength through a continuous bending integrated structure and a hydraulic forming mode.

An embolic protection device is disclosed for placement through the descending aorta and over the aortic arch to inhibit emboli release into the aortic side branch vessels while allowing simultaneous access to the aortic valve by at least one interventional and / or diagnostic catheter being introduced from the descending aorta. The filter body comprises a tubular porous mesh material and has an open upstream end to allow entry of blood flow and emboli and an open downstream end to allow entry of multiple catheters. The filter body includes at least one catheter access path parallel to said at least one passage through the filter body, and the filter body has one or more support structures or wires that provide longitudinal stiffness to the device to prevent compression or movement of the filter during a procedure.

The invention discloses a folding type energy dissipater for dispersing side supporting holes of a water delivery system and a size determining method of the folding type energy dissipater, and relates to the technical field of ship lock water delivery system hydraulics. The folding type energy dissipater comprises two sets of vertical sills and an arc-shaped sills, and the two sets of vertical sills are connected through the arc-shaped sills to form a folding type structure; the folded energy dissipater is arranged on the side, close to the center line of the lock chamber, of each water outlet branch hole on the water outlet sides of the two sides of the lock chamber of the dispersed water delivery system, outflow energy of the branch holes can be dissipated within the limited arrangement distance, jet flow of each water outlet branch hole is converted into a V-shaped water flow state on the plane, outflow of the adjacent water outlet branch holes can collide to dissipate energy, and the energy dissipation efficiency is improved. The turbulent local concentration phenomenon is obviously weakened, the flow speed is obviously reduced after water flow passes through the two layers of second permeable holes in the arc-shaped ridge and rubs with the edges of the holes, high-strength jet flow in the horizontal scale and the vertical scale can be effectively dispersed, the arrangement cost and the maintenance cost are not high, and the stable berthing condition of a ship can be met.