175 results about "Side branch" patented technology

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.

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.

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.

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.

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 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.

The utility model discloses a suspended ceiling inner assembly type steel structure assembly which comprises a keel main rod (1), a first vertical rod (2) is hinged to the keel main rod (1), a side support (3) is arranged on the side portion of the first vertical rod (2), and a guide rod (4) is arranged on the upper portion of the side support (3). The first vertical rod (2) is sleeved with a second vertical rod (5), a side block (6) is arranged on the side portion of the tail end of the second vertical rod (5), the guide rod (4) penetrates through the side block (6), and a screw piece (7) used for fixing the guide rod (4) is arranged at the outer end of the side block (6). The top end of the second vertical rod (5) is connected with a top plate frame (8). The utility model has the advantages of simple structure, high assembly tightness and good overall structural stability.

The utility model discloses a disposable extracorporeal circulation pipeline converter, and relates to the technical field of extracorporeal circulation converters. The side branch pipe is fixedly installed in the center of the top end of the vein pot. The side branch pipe at the top end of the vein pot is mutually connected with an extracorporeal circulation pipeline of a patient and is mutually connected with a hemodialysis machine vein detector through a dialysis machine guide pipe, so that effective detection is carried out in the blood return process, a filter screen in the vein pot can effectively filter blood clots in blood, and the blood clots in the blood can be effectively filtered out. In addition, part of the connecting pipe at the bottom end of the vein pot is placed at the detection part of the hemodialysis machine for air and blood leakage detection, so that the safety and effectiveness of the whole blood return process are ensured, the blood clots are effectively prevented from entering a blood circulation system, and the blood clots are prevented from entering the blood circulation system. And the risk of serious complications such as vascular obstruction and embolism caused by blood clots is reduced.

The present invention provides a self-sealing shunt cannula, comprising a cannula and a shunt tube. The cannula comprises a cannula body, a side port connected to the outer wall of the cannula body, and a check valve arranged on the side port, the side port being communicated with the cannula body. The shunt tube comprises a shunt tube body and a shunt joint connected to the shunt tube body, the shunt joint being detachably connected to the side port and / or the check valve. The check valve comprises a valve body and a valve flap which are arranged in the side port, the outer wall of the valve body is sealedly attached to the inner wall of the side port, and a valve body channel is formed in the valve body. When the shunt tube is not connected to the cannula, the valve flap seals the valve body channel so as to prevent blood in the cannula body from flowing out through the side port. When the shunt tube is connected into the cannula, the shunt joint opens the valve flap, and part of blood in the cannula body can flow out of the shunt tube. According to the present invention, collateral circulation can be quickly established to provide protection for lower limbs when lower limb blood supply is insufficient in a circulation support process, the risk of the entry of air during collateral circulation establishment can be effectively avoided, and thrombus formation in the circulation process is reduced.

The invention relates to the field of pressure detection, in particular to a tap water pipe pressure detection device. The technical problem to be solved is that a large amount of dirt is adhered to the surfaces of a dial plate and a glass cover of the bourdon tube water pressure detection meter, reading is affected, rotation of a pointer is further affected, and the water pressure detection value is inaccurate. According to the technical scheme, the device comprises a water conveying pipeline and a water inlet pipe installed on the water conveying pipeline; dirt on the rear surface of the glass cover is cleaned through rotation of the pointer, in order to further improve the cleaning effect, water is fed into the space between the dial plate and the glass cover sealing space through the flow dividing pipe on the right side, the flow dividing pipe is located on the upper side of the sealing space, washing operation is effectively achieved, the cleaning difficulty is reduced, and the cleaning effect is improved.

1. The name of the design product: disposable multi-head infusion extension tube. 2. The use of the design product: used for connecting infusion bag output control liquid, can connect 2, 3, 4 different number of extension tubes on the main pipeline side branch, suitable for different models of different needs when continuously infusing two bags, three bags, four bags. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1. 5. The submitted views are sufficient to embody the design, and the left view, right view, top view, and bottom view are omitted.

The utility model discloses a fruit tree planting branching device which comprises a bottom panel, a telescopic supporting rod structure is fixed to the top of the bottom panel, two right sleeve blocks are fixed to the right side of the upper end of the telescopic supporting rod structure in the longitudinal direction, right stretching components are arranged on the right sides of the two right sleeve blocks, and each right stretching component comprises a right frame block. The right frame block and the right sleeve block are fixedly connected, a right square plate is arranged on the side face of the right frame block, an insertion plate is fixed to the left side of the right square plate, one end of the insertion plate is connected to the inner side of the right frame block in an inserted mode, right side branch components are fixed to the right ends of the two right square plates, and each right side branch component comprises a lower branch half sleeve frame. An upper branch half sleeve frame is arranged on the upper side of the lower branch half sleeve frame, two compression springs are arranged between the two ends of the upper side of the lower branch half sleeve frame and the two ends of the lower side of the upper branch half sleeve frame, and two left sleeve blocks are fixed to the left side of the upper end of the telescopic supporting rod structure in the longitudinal direction, so that the use performance of the branching device is improved.

The application discloses a V-shaped energy dissipator for a ship lock dispersion water delivery system and a layout structure thereof. The V-shaped energy dissipator comprises a V-shaped sill body, the V-shaped sill body comprises two vertical sills, the two vertical sills are vertically arranged and one side of the two vertical sills is correspondingly connected to form a V-shaped structure, and a plurality of first water-permeable holes penetrating through end surfaces of the vertical sills are arranged on the vertical sills. The layout structure comprises a layout structure, a lock chamber surrounded by two lock walls, a plurality of side branch holes arranged on the lock walls, the side branch holes on the two lock walls being arranged in a staggered mode, and a plurality of V-shaped energy dissipators described in the foregoing, the V-shaped sill bodies being arranged in a one-to-one correspondence with the side branch holes, the openings of the V-shaped sill bodies facing away from the side branch holes and the V-shaped sill bodies being opposite to the side branch holes, and the height of the V-shaped sill body being 1-1.1 times the height of the side branch hole. The application can effectively disperse high-intensity jets in the horizontal dimension, weaken the local concentration of turbulent flow, weaken vertical vortices, and thus improve the berthing conditions of ships in the lock chamber.

The utility model discloses a gas circulation distribution device, which is applied to branching reaction of butadiene rubber in a reaction kettle and comprises a pressurizing component, a Venturi tube and a distributor. The pressurizing assembly is provided with an input end and an output end; the venturi tube is provided with an input end and an output end, the input end of the venturi tube is connected with the reaction kettle, and the output end of the venturi tube is connected with the input end of the pressurizing assembly. According to the gas circulation distribution device, a gas modifier and nitrogen are mixed and pressurized through the venturi tube with the side branch port, and are conveyed into the reaction kettle again, so that the gas pressure balance in the kettle is favorably kept when the gas modifier is conveyed into the reaction kettle; and the distributor can directly input the mixed gas containing the gas modifier to the bottom of the reaction kettle, so that the gas modifier and the material can be more sufficiently mixed, the branching modification effect of butadiene rubber is better, the addition of the modifier is convenient to control, the operation is more convenient, and better practicability is achieved.

The utility model relates to the technical field of dragon fruit planting, in particular to a branch pruning device for dragon fruit planting. Comprising a fixed rod, a movable rod, a blade, a blade groove, a fixed plate and two limiting assemblies, the movable rod is rotationally connected with the fixed rod, the blade is fixedly connected with the movable rod, the blade groove is fixedly connected with the fixed rod, the fixed plate is fixedly connected with the fixed rod, and each limiting assembly comprises a connecting rod, a telescopic rod, an abutting spring and a clamping plate; the telescopic rod is fixedly connected with the connecting rod, the clamping plate is fixedly connected with the telescopic rod and located at the end, away from the connecting rod, of the telescopic rod, and the two ends of the abutting spring are fixedly connected with the clamping plate and the connecting rod respectively and arranged outside the telescopic rod in a sleeving mode. Side branches are prevented from falling to the ground, working steps are saved, and working efficiency is improved.

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.

The invention discloses a K-shaped round steel pipe tubular joint reinforcing structure and method, and the method comprises the following steps: S1, prefabricating a first reinforcing plate and a second reinforcing plate according to the sizes of a main pipe, a first branch pipe and a second branch pipe of a tubular joint to be reinforced; s2, the two opposite side walls of the left annular plate and the right annular plate are welded to the first branch pipe and the main pipe at the intersecting line of the branch main pipe on one side, and the welding seam direction is in the axis direction of the first branch pipe; s3, the inner side walls of the first upper ring plate, the second upper ring plate and the lower ring plate are welded to the second branch pipe and the main pipe at the intersecting line of the branch main pipe on the other side, and the welding seam direction is in the axis direction of the second branch pipe; and S4, the left annular plate is welded and fixed to the joint of the first upper annular plate and the lower annular plate, and the right annular plate is welded and fixed to the joint of the second upper annular plate and the lower annular plate. The method is suitable for reinforcing and strengthening the existing K-shaped circular steel tube tubular joint, effectively improves the bearing capacity of the steel tube joint, and is also suitable for reinforcing the reinforced joint of the steel tube structure in the design stage.

The invention relates to the technical field of interventional medical instruments, and discloses a handheld ultrasonic system for treating vascular occlusion and a using method.The handheld ultrasonic system for treating vascular occlusion comprises a guide wire used for moving to an internal occlusion part of a blood vessel along the blood vessel, and further comprises a positioning guide wire and a catheter, the positioning guide wire is used for entering the main branch from the side branch to perform reverse puncture on the artery plaque, a positioning guide wire cavity is formed in the catheter, the positioning guide wire can move along the positioning guide wire cavity, a positioning guide wire outlet communicated with the positioning guide wire cavity is formed in the catheter, a balloon is arranged at the far end of the catheter, and the balloon can synchronously move with the catheter in a contraction state; the balloon is additionally arranged at the front end of the catheter, the balloon can be matched with the blood vessel wall or directly form a channel in the balloon in the expansion state, the channel restrains the guide wire to move along the channel, an inlet of the channel is communicated with the guide wire catheter, an outlet of the channel faces the artery plaque, and reverse puncture of the artery plaque is completed.