54 results about "Hepatic portal" patented technology

The invention provides a hepatic portal occlusion device. The hepatic portal occlusion device comprises a water tube, a water bag, a water pump, a rod-like connecting rod and a controller. The water tube is provided with a closed first end and a closed second end, a containing space is defined by the water tube, and the containing space is decreased with the increase of liquid in the water tube and increased with the decrease of the liquid in the water tube. The water bag is used for storing a certain amount of liquid. The water pump is used for delivering liquid in the water bag to the water tube during hepatic portal occlusion and delivering the liquid in the water tube to the water bag during cancelling the hepatic portal occlusion. The rod-like connecting rod is detachably connected with the water pump. The controller is used for controlling the volume of the liquid in the water tube by controlling the water pump. According to the hepatic portal occlusion device, occlusion pressure can be adjusted during laparoscopic surgery, so that the selective occlusion is achieved, and liver injuries are reduced.

The invention belongs to the technical field of medical instruments, and especially relates to a pressure selective hepatic inflow occlusion apparatus which comprises a movable end, a fixed end, a pressure transducer, a controller and a display screen, wherein the movable end is provided with a deformable hollow U-shaped ring, the fixed end controls the contraction and expansion of the two sidewalls of the hollow U-shaped ring through a regulating part, the pressure transducer is arranged on the inner bottom of the hollow U-shaped ring, and the pressure transducer and the display screen are electrically connected with the controller. The pressure selective hepatic inflow occlusion apparatus is delicate in design and convenient to control and can quantitatively occlude different blood vessels of a hepatic portal according to pressure.

The invention discloses a recoverable hepatic portal occlusion device under laparoscope, including a main tube. Limiting plates which can be lifted and rotated are installed inside the main tube, a bottom tube is installed on the lower side of a base, and a rotatable rotating inner shell is arranged at the position corresponding to the limiting plates inside the bottom tube, the upper end of the rotating inner shell is fixedly connected with a limiting column connected to the limiting plates, the bottom end of the rotating inner shell is provided with a rotating closed structure which can rotates with the rotation of the rotating inner shell, the surface of the main tube is connected with a lifting knob by screw threads, the bottom end of the lifting knob is connected with a knob base by bearings, and the lower side of the knob base is provided with a clamping structure; and the bottom tube for fixing a hepatic portal occlusion belt and the main tube can be detached, when the bottom tube is used to fix the hepatic portal occlusion belt, the bottom tube can be directly placed in the patient's body, the operation is simple and convenient, and an intelligent alarm clock can also timing the blocking and relaxing time to the hepatic portal, so that medical staff can be reminded to prevent liver damage caused by long-time blocking at the right time.

The invention relates to application of protein C in treating hepatic portal hypertension, relates to the relevant research of the protein C and portal hypertension, and also relates to protein C inhibitors including miRNA. The protein C inhibitor (miRNA) can inhibit the proliferation of hepatocytes and promote the apoptosis of the hepatocytes, which can reduce hyperplasia tissue of hepatic sinusoids to make portal venous flow smooth and reduce the portal pressure, thereby opening up new research prospects for the treatment of the portal hypertension (especially portal vein cavernous transformation) and providing new ideas for the deep development of miRNA drugs and clinical treatment.

The invention provides a pressure-adjustable hepatic portal occlusion device and an occlusion method, and relates to the technical field of surgical instruments. The pressure-adjustable hepatic portalocclusion device comprises an air bag A, an air bag B, a one-way air valve and a pressure gauge, wherein the air bag A is strip-shaped; an inflation inlet and a pressure gauge interface are formed inthe air bag A; movable buckles are mounted at two ends of the air bag A and can be connected or separated; when the movable buckles are in a connected state, the air bag A forms a circular ring; an air outlet is formed in the air bag B and communicated with the inflation inlet of the air bag A; the one-way air valve is arranged between the inflation inlet of the air bag A and the air outlet of the air bag B; and the pressure gauge is connected onto the pressure gauge interface of the air bag A. The hepatic portal occlusion method is applied to the pressure-adjustable hepatic portal occlusiondevice. The inflation amount can be adjusted and controlled on the basis of a display value of the pressure gauge, and the occlusion tightness degree is accurately adjusted and controlled.

The invention relates to the technical field of medical auxiliary instruments, in particular to a portable hepatic portal occlusion device. The device comprises a guide tube used for supplying an occlusion band to a to-be-occluded position, a locking part arranged between the discharging ends of two channels, and a clamping part which comprises a seat body, two connecting rod groups arranged symmetrically and a one-way locking structure, wherein one end of each connecting rod group is connected with a force application part to clamp the occlusion band; the one-way locking structure is used forkeeping a clamping action; and the seat body is connected with the guide tube through a hook body structure. The occlusion band at the tail ends of the channels forms a ring body structure through movement of the guide tube after a connection relation is removed, and the size of the ring body structure is adjusted by controlling the occlusion band through the feeding ends of the channels. According to the invention, a relatively convenient ring formation mode for the occlusion band is obtained by improving the structure of the hepatic portal occlusion device, the size of the ring body structure is convenient to control, and the hepatic portal occlusion device can be universally used in laparoscopic and open-state operations only by changing the structural forms of the guide tube and the clamping part in an application process.

The invention provides a starch-indolic acid derivative, a preparation method and application thereof, and relates to the technical field of modified starch. According to the invention, the starch-indolic acid derivative is esterified starch generated by esterification reaction of starch and indolic acid under the action of a condensing agent and and alkali, has relatively high resistance, can resist degradation of the stomach and the small intestine, can release indolic acid beneficial to intestinal health through fermentation of intestinal flora after reaching the colon part, has obvious advantages compared with traditional administration modes such as intragastric administration, intraperitoneal injection and the like, and can obviously increase the content of indolic acid in colon and hepatic portal venous blood; and indoleic acid can activate an aromatic hydrocarbon receptor to play an immunoregulation role, and the indoleic acid and the regulation role of short-chain fatty acid released by fermentation of starch with intestinal flora are superposed, so that a product which synergistically plays the immunoregulation role through a plurality of immune system signal pathways is provided.

The invention discloses a recoverable hepatic portal obstruction device under a laparoscope. The recoverable hepatic portal obstruction device under the laparoscope comprises a limiting controller. Aninto-belly length scale is arranged on the outer side wall of the limiting controller. A rotating rod is arranged in the limiting controller, an operating mechanism is connected to the upper part ofthe rotating rod, a locking length scale is arranged on the outer side wall of the rotating rod, a fixed disk is connected to the lower part of the rotating rod, a hinged rotating disk is connected tothe side, away from the rotating rod, of the fixed disk, a rotating disk is connected to the lower part of the hinged rotating disk, and a lock catch body is arranged on the side, away from the hinged rotating disk, of the rotating disk. According to the recoverable hepatic hilum obstruction device under the laparoscope, a mounting groove, a mounting box, a supporting frame, a storage battery, acooling fan, a protection board, a ventilation opening and other structures are arranged, a handle is enabled to have the functions of ventilation and heat dissipation, the problem of sweating in thehands of a doctor when the weather is hot is solved, and the comfort and accuracy when the doctor operates the handle are improved.

The invention relates to the technical field of liver surgery and particularly to a hepatic portal blocking band which is detachable, has a timing function and does not need blocking pincers. The blocking band comprises a blocking band body; a fixing male piece and a fixing female piece are arranged at the head end and the tail end of the blocking band body respectively; a plurality of protrudingclamps are integrally formed on the fixing male piece; a plurality of inserting holes are formed in the fixing female piece; the protruding clamps can extend into the inserting holes; and the head endand the tail end of the blocking band body are hot-melted into welding ends. According to the hepatic portal blocking band which is detachable, has a timing function and does not need blocking pincers, the fixing male piece and the fixing female piece are arranged to be striking red, so that a surgeon is reminded to pay attention to aligning and embedding of the ends of the blocking band body, and the surgeon does not need to spend time in finding the two ends of the hepatic portal blocking band and then placing blocking pincers. The two ends of the blocking band are closed, so that an exudate cannot enter the tube during an operation, and the exudate in a conventional blocking band tube can be prevented from being thrown into eyes of the surgeon.

The invention discloses a teaching model for human body hepatic portal vein system anatomy and a demonstrating method of the human body hepatic portal vein system based on the model. The structure comprises a model box, an organ model and a vein system model are arranged in the model box, the organ model is composed of models of part of human organs, the vein system model is composed of vein models with the constitution being the same as that of the human body hepatic portal vein system, the vein models are hollow tubes made of a transparent material, LED lamp strips are arranged in the vein models in a penetrating manner, the LED lamp strips are connected to a power supply controller, and switch buttons used for controlling power supplies of the LED lamp strips are arranged on the power supply controller. According to the technical scheme, through the combination of sound, light and shape, the human body hepatic portal vein anatomy and blood circulation during the hepatic portal veinhypertension can be completely, accurately and intuitively displayed, so that a student can more easily understand the complicated anatomy structure, through practical teaching verification, the learning progress and understanding of the student for the relevant knowledge of the human body hepatic portal vein can be accelerated and deepened, in addition, the model device is integrally arranged inthe box, and thus teaching transfer is facilitated.

The invention discloses a hepatic portal occlusion device with remote control. The hepatic portal occlusion device comprises an upper shell and a lower shell, wherein one side of the upper shell and one side of the lower shell are movably connected together by a hinge, and the other opposite sides of the upper shell and the lower shell are clamped together in an openable-closable manner by a fastener; the upper shell and the lower shell enclose into a hepatic portal occlusion working cavity; the hepatic portal occlusion working cavity is internally provided with a miniature speed-reducing motor, a main controller, a radio-frequency receiving module and a battery module; the output end of the radio-frequency receiving module is connected to the input end of the main controller, and the control-signal output end of the main controller is connected to the driving-signal input end of the miniature speed-reducing motor; an output shaft of the miniature speed-reducing motor is connected witha gear, an occlusion belt is meshed on the gear, and one end of the occlusion belt is fixed at the outer part of the hepatic portal occlusion working cavity. The hepatic portal occlusion device withremote control disclosed by the invention has the beneficial effects that the occlusion belt can be loosened or tightened by remotely controlling the forward and reverse rotation of the miniature speed-reducing motor, so that occlusion and dredge of blood flow into the liver under a laparoscope are realized, the operation is simple and the difficulty and the risk of hepatic portal occlusion in theliver operation are greatly reduced.

The invention provides a porta hepatis blocking belt, and relates to the technical field of medical instruments. The porta hepatis blocking belt comprises a belt body, a fixing hole and a releasing hole are formed in the belt body, and the fixing hole is communicated with the releasing hole; a damping hole is formed in the outer wall of the belt body, and a damping protrusion matched with the damping hole is arranged on the inner wall of the fixing hole. The connecting section on the belt body can be in interference fit with the fixing hole, and the connecting section on the belt body can be in clearance fit with the relieving hole. The technical effect that the hepatic portal blocking belt is convenient to remove is achieved.

The invention provides a numerical control filling type laparoscopic portal blood blocking instrument which comprises a filling type laparoscopic portal blood blocking tape, a connecting tube with a one-way valve, a filling medium and an infusion pump with a digital control chip. The filling type laparoscopic portal blood blocking tape is connected to the connecting tube with the one-way valve, the filling medium is arranged in the infusion pump with the digital control chip, the infusion pump with the digital control chip is connected to the filling type laparoscopic portal blood blocking tape through the connecting tube with the one-way valve, and accordingly the filling medium is filled into the filling type laparoscopic portal blood blocking tape. The digital control chip is used for controlling infusion of the filling medium towards the filling type laparoscopic portal blood blocking tape.

The invention relates to a medical instrument, in particular to a total hepatic vascular exclusion auxiliary device, an operation method and application of the total hepatic vascular exclusion auxiliary device. The device comprises a support rod, a covered stent with elasticity and a control component controlling opening and closing of the covered stent, wherein the covered stent is covered on the support rod, the tail end of the covered stent is connected with the middle portion of the support rod, and the control component is respectively connected with the support rod and the covered stent. The operation method comprises the steps of fixing the support rod, operating the control component to enable the covered stent to be opened, and operating the control component to enable the covered stent to be closed. The device is especially applied to a surgery of handling hepatic vein and retrohepatic inferior vena cava injury, the total hepatic vascular exclusion auxiliary device is led into the retrohepatic inferior vena cava through the support rod and is matched with first hepatic portal exclusion to be used, total hepatic vascular exclusion can be achieved, and meanwhile blood flow in the retrohepatic inferior vena cava is not blocked. A position of the hepatic vein and retrohepatic inferior vena cava injury is enabled to acquire a clear blood-free operation view, operation is rapid and simple, and blocking efficiency is high.