25 results about "Duodenum/Duodenal" patented technology

The present application relates to the field of pet feed, and discloses a maintenance ration formula for improving the smoothness of dog hair. The formula comprises base ration particles and lipid microcapsules attached to the surface of the base ration particles; the lipid microcapsules encapsulate a core material composed of essential fatty acids and ceramides, have a double-layer wall material structure, and the outer layer is acid-resistant plant gum and the inner layer is lipase-sensitive phospholipid; the microcapsules are attached to the surface of the puffed base ration by low-temperature vacuum spraying. The present application makes the microcapsules resistant to gastric acid and releases the core material under the action of duodenal lipase, targets and enriches in sebaceous glands through the lymphatic system, solves the problems of low lipid delivery conversion rate and insufficient substrate of sebaceous glands, improves the proportion of sebaceous gland ceramides, and reduces the hair friction coefficient.

The utility model provides a kind of nipple cutting balloon dilatation catheter, comprising: the balloon part of being arranged in the front part of catheter, the tube wall of the balloon part is wrapped with balloon, the outer surface of the balloon is equipped with multiple knife filaments, and the knife filament is used to be connected with high frequency generator.The utility model can be sent into or pulled out duodenal nipple in the guide of guide wire, and dilate duodenal nipple, when nipple sphincter stenosis appears, handle joint connects high frequency generator, and the knife filament on the surface of balloon can carry out electroincision effect to the tissue of stenosis, increase stenosis dilatation efficiency and effect.

The application discloses a compound plant essential oil preparation for improving intestinal tract barrier function of laying hens and a preparation method thereof, relates to the technical field of livestock and poultry intestinal tract health regulation, and comprises microcapsule particles with a multilayer structure, which sequentially comprises a core layer, a first coating layer, an intermediate functional layer and a second coating layer; the compound plant essential oil preparation for improving intestinal tract barrier function of laying hens and the preparation method thereof are characterized in that the preparation is arranged as a multilayer microcapsule structure composed of the core layer, the first coating layer, the intermediate functional layer and the second coating layer in sequence, and the first coating layer and the second coating layer adopt enteric polymers with different pH dissolution ranges, so that the intermediate functional layer can be released first in the pH environment from the duodenum to the jejunum, and the core layer is released subsequently in the pH environment of the ileum, thereby realizing the graded and zoned release of active components of plant essential oils in the front and rear sections of the small intestine of laying hens, and matching different essential oil components with the barrier repair requirements of each section of the intestinal tract.

This invention provides a single-operated duodenal sphincter cutter, comprising: an outer sheath, a guidewire, a metal wire, and a handle. The guidewire is inserted into the interior of the outer sheath through its wall and exits from its tip. The handle is connected to the tail of the outer sheath. One end of the metal wire is fixedly connected to the front of the outer sheath, and the other end is inserted into the interior of the outer sheath and connected to the handle. This invention features a dual-channel tube, with the guidewire entering the guidewire channel through the side wall. Its outer diameter is thinner than that of a conventional three-channel tube. The guidewire is led out through the side wall of the tube. With the outer sheath fixed in place, the operator can insert the guidewire into the common bile duct or pancreatic duct without the assistance of an assistant, increasing the success rate of cannulation.

[Problem] To provide: a cannula that can be easily inserted into a common bile duct or a pancreatic duct via a major duodenal papilla; and an endoscopic system provided with such a cannula. [Solution] A second camera 30 of a cannula 12 captures an image of the entrance of a common bile duct or a pancreatic duct in a state where the second camera 30 is inserted from the opening of a major duodenal papilla. A transparent shield 124 provides a cavity around the second camera 30 and ensures a field of view Vf of the second camera 30 in a state where the transparent shield 124 is inserted from the opening. The shield 124 has a convex surface 124c around the central axis CA of the field of view Vf of the second camera 30. The portion having the convex surface 124c has a uniform thickness. A guide wire 15 is configured to advance within the field of view Vf of the second camera 30.

This invention discloses a machine vision-based method for detecting contaminant residues after duodenoscope reprocessing, specifically in the field of machine vision, to address the problem of accurately locating and removing contaminant residues after existing duodenoscope reprocessing. The method involves applying controlled incident angle, wavelength, and polarization state light perturbations to the outer surface and inner lumen of the duodenoscope, acquiring image sequences under perturbation, and extracting temporal brightness response features of pixel blocks. Brightness difference residuals and consistency weights are calculated at different incident angles to identify candidate abnormal regions and generate a difference map reflecting their response characteristics to a clean baseline. The difference map is segmented, analyzed for connectivity, and clustered. Combining three-dimensional coordinate continuity and surface normal consistency, the three-dimensional spatial boundary of the suspected contamination area is delineated. Within this range, directional cleaning and retesting are performed, with repeated detection until the contamination area disappears, achieving high-precision detection and efficient cleaning.

This invention relates to a device for electric field therapy of the human digestive tract, comprising: an inner guide rod, an outer sleeve, a rotating ring, and a supporting component, with an electrode array membrane spirally wound around the supporting component. When the supporting component is in a radially contracted state, the invention can be placed within the surgical instrument channel of a commonly used gastroscopy. When the supporting component is in a radially expanded state, it supports the electrode array membrane, enabling accurate electric field therapy of the upper digestive tract, particularly the inner wall of the duodenum.

The utility model discloses a kind of free directional guiding visual guide wire mirror devices.The device is mainly composed of hand handle, imaging optical fiber, illumination optical fiber, miniature viewfinder objective group, photoelectric conversion image acquisition group, flexible outer sleeve and front end free directional guiding end, outer diameter is less than 0.9mm.Free directional guiding function is unique, can be visualized to explore in the premise of not harming cavity tract mucosa, into super thin tube cavity and narrow site.The medical scene such as oviduct cavity tract inspection, assisting duodenoscope to carry out intrahepatic duct operation can be applied to, effectively break through the application limitation of traditional endoscope, reduce the harm of radiation, reduce cross-infection risk, provide innovative technical means for medical diagnosis and treatment.

The utility model relates to medical instrument technical field especially, and it is a kind of covered stent and implantation system.This covered stent includes support framework and film, wherein: support framework is the hollowed out cylinder structure of peripheral surface, it can be radially compressed and expand;Film is coated on part support framework, and drainage mesh is formed at the region of support framework not being coated by film.Due to film being coated on part support framework, drainage mesh is formed at the region of support framework not being coated by film, bile of gallbladder, bile in common hepatic duct and pancreatic juice in pancreatic duct can enter the inside of covered stent through drainage mesh and reach duodenal papilla, thereby avoiding the phenomenon that bile and pancreatic juice cannot flow out from common bile duct and reach duodenal papilla due to common bile duct being pressed by stent, and simultaneously, a plastic stent does not need to be additionally implanted in common bile duct to help common bile duct drainage, to achieve the purpose of reducing operation cost and operation complexity.

The application provides a double-guide-wire sphincterotome, and relates to the field of medical devices.The double-guide-wire sphincterotome comprises a catheter sheath, the inside of the catheter sheath is provided with a cutting-wire cavity and two guide-wire cavities which are independent of each other, at least one side wall of the guide-wire cavities is provided with a quick exchange port; the guide-wire cavity connected with the quick exchange port is at least partially unsealed, and the continuously unsealed part accounts for 50%-99% of the length of the catheter sheath.The double-guide-wire sphincterotome provided by the application solves the technical problem of difficult superselection of a duodenal papilla sphincterotome guide wire in the prior art.

The application discloses an intelligent self-adaptive ablation system, an ablation catheter and a method for type 2 diabetes treatment, and belongs to the technical field of medical devices. The system comprises an intelligent control host and an electrode unit library. The intelligent control host integrates a main control processor, a motion prediction decision unit, an intelligent driving control module and an intelligent energy control module. The electrode unit library comprises a plurality of electrode units with different structures. The main control processor and the motion prediction decision unit automatically select an optimal electrode unit based on the duodenal cavity tract anatomical form obtained by a sensing component. The intelligent driving control module receives instructions to drive the selected electrode unit to adapt to the cavity environment. The intelligent energy control module provides controlled ablation energy to the electrode unit. Through the "sensing-decision-execution" closed loop, the application realizes self-adaptive and precise ablation treatment in the duodenal dynamic environment, thereby solving the problems of passive control strategy and lack of prospective compensation in the prior art which depend on a single electrode form.

The present application relates to the technical field of medical devices, in particular to a dilatable sheath type endoscopic biliary mud-like stone removal device, which comprises an outer sleeve, a flushing unit, a hollow working sheath, a spiral inner core assembly, a rotary drive unit and a vibration generating unit. The flushing unit, flexible conducting rod, spiral blade and vibration generating unit work together to continuously discharge the biliary mud-like stones. The positive pressure of the flushing liquid forms a forward flow in the bile duct, and the axial conveying force of the spiral blade discharges the stones in the outward direction, effectively avoiding the stones being pushed to the distal end of the bile duct, improving the complete removal rate of the stones, overcoming the problems of the existing dredging device, such as easy adsorption to the bile duct wall when using negative pressure suction, causing mucosal vessel rupture, and possibly sucking bacteria from the duodenal papilla into the bile duct, causing infection, and greatly improving safety.

The utility model provides a duodenum papilla dilatation balloon catheter with pressure measurement function, including outer sheath, combination and a plurality of branch pipes, the outer sheath includes drainage pipe section I, drainage pipe section II and drainage pipe section III connected in proper order from head to tail, the surface of drainage pipe section II is wrapped double -deck cylindrical dilatation film, double -deck cylindrical dilatation film includes inner layer film and outer layer film, and the outer layer film is equipped with opening, and the opening is equipped with pressure sensor, the combination is connected with the tail end of drainage pipe section III, and a plurality of branch pipes are connected with the combination, the utility model can be under the assistance of guide wire and carry out common bile duct or pancreatic duct intubation, can detect the pressure between balloon and duodenum papilla sphincter while dilating duodenum papilla sphincter, and the size of papilla dilatation is determined through pressure value, avoids the incidence of complications such as papilla sphincter laceration hemorrhage, bile leakage, intestinal bile reflux etc.

The embodiment of the present application provides a rat bile duct catheter, which comprises a first catheter (1), a single knot (2) connected with the first catheter (1), a second catheter (3) connected with the single knot (2), a first double knot (4) connected with the second catheter (3), and a third catheter (5) connected with the first double knot (4). The first catheter (1) is inserted into the common bile duct and fixed through the single knot (2), the third catheter (5) is inserted into the duodenum and fixed through the first double knot (4), and the bile is taken at the second catheter (3). The first catheter is inserted into the common bile duct and fixed on the side of the common bile duct through the single knot, the third catheter is inserted into the duodenum and fixed on the side of the duodenum through the first double knot, and the second catheter is located outside the rat body, so that the bile can be taken at the second catheter. The present application conforms to the physiological structure of the rat, is not easy to fall off after being fixed, meets the requirement of long-term periodic collection of bile, and conforms to the requirement of animal welfare.

The application relates to an image intubation difficulty evaluation method and device, computer equipment and a storage medium. The method comprises the following steps: acquiring a duodenal papilla image of a target object through an endoscope; acquiring a morphology category and a structure feature of the duodenal papilla of the target object according to the duodenal papilla image; acquiring an X-ray image of the endoscope, and acquiring an angle feature of the endoscope according to at least one of the X-ray image and the duodenal papilla image; and judging the difficulty degree of image intubation of the target object according to the morphology category and the structure feature of the duodenal papilla and the angle feature of the endoscope, so as to obtain a difficulty evaluation result. The method not only considers the morphology structure features of the duodenal papilla of the target object, but also combines the intubation situation of the endoscope before intubation, can comprehensively evaluate the difficulty degree of image intubation of the target object from multiple aspects, and achieves the purpose of accurately evaluating the difficulty degree of image intubation.

The utility model provides a duodenum papilla sphincter muscle incision knife with pressure measurement function, including outer sheath, guide wire, wire and handle, the outer sheath includes the drainage tube section I, drainage tube section II, drainage tube section III and drainage tube section IV connected in proper order from head to tail, the tail end of drainage tube section IV is connected with handle, the pipe wall of drainage tube section II is opened with the installation groove, is equipped with pressure sensor in the installation groove, one end of wire is connected with the pipe wall of outer sheath, and the other end inserts the inside of outer sheath and handle, guide wire inserts through handle, passes through drainage tube section IV, drainage tube section III, drainage tube section II, drainage tube section I in proper order, and is worn out. The utility model can be under the assistance of guide wire to carry out the common bile duct or pancreatic duct intubation, detects the pressure of common bile duct, pancreatic duct and duodenum papilla sphincter muscle while carrying out endoscopic under papilla sphincter muscle incision, determines the size of papilla sphincter muscle incision through pressure value, avoids that papilla sphincter muscle is too small or too big.

Endoscopes (e.g., duodenoscopes) include dual-fluid valves for controlling the flow of water and air through a flexible tubular probe to flush or inflate the patient's lumen, respectively. Some examples of these dual-fluid valves include flexible valve seals that allow air to flow in one direction but not in the opposite direction. Different examples of these valve seals include features such as: a set of overlapping flexible flaps arranged in a spiral; a rubber disc with a cross-shaped array of perforations that opens in response to a positive pressure differential across the disc; an elastically expandable cone with multiple concentric ridges; a valve core surrounded by an elastic tubular member capable of radial expansion to open an air passage within the valve core; and an elastic tube that bulges radially outward when compressed or otherwise shortened to block the annular air passage.

This invention provides intraluminal devices and methods that can be used for the treatment of health conditions, including obesity and diabetes. [Solution] The method and system reduce weight or control diabetes by decreasing an individual's calorie absorption. For example, obesity and diabetes are treated by regulating the duodenal mucosa using electroporation. Furthermore, a portion of the digestive tract is bypassed to reduce nutrient intake.

A fenestrated duodenal stent includes a stent body enclosed by a meshed sidewall. The stent body is open at two ends and hollow inside. The stent body includes a proximal support segment, a distal support segment, and an opening segment connected between the proximal and distal support segments. The proximal support segment is divided into a front section, a middle section and a rear section that are connected sequentially and coaxially. The front section is of an umbrella shape, and an opening of the umbrella shape faces the middle section. The middle section is of a cylindrical shape, and a diameter of the cylindrical shape is less than a diameter of the opening segment. The rear section is spherical or hemispherical, and a maximum diameter of the rear section is greater than the diameter of the opening segment but not greater than a maximum diameter of the umbrella shape.

Provided herein are expandable (e.g., inflatable by fluid) structures incorporating multiple electrodes for optimal circumferential denervation. In some examples, catheters incorporating such expandable structures may be used to ablate nerves in a perivascular space surrounding a vessel (e.g., to effect denervation of at least a portion of the liver, kidneys, pancreas and / or duodenum).

A suction valve for an endoscope (e.g., a duodenoscope) includes a valve housing, a valve spool, and a return mechanism for returning the valve spool from a manually depressed position to a home position. In the depressed position, the suction valve places the endoscope in a suction configuration for drawing fluids, tissue or other matter out from within a patient. The home position places the endoscope in a vented configuration to interrupt the suction. Various examples of the return mechanism include a resilient integral portion of the valve spool, a resilient integral portion of the valve housing, a resiliently flexible diaphragm extending radially across an annular gap between the valve spool and the valve housing, and a magnetic set affixed to the valve spool and the valve housing.

Endolumenal devices and methods can be used for the treatment of health conditions including obesity and diabetes. In some embodiments, the methods and systems provided herein can cause weight loss or control diabetes by reducing the caloric absorption of an individual. For example, this document provides several devices and methods for treating obesity and diabetes by using electroporation to modulate the duodenal mucosa. In addition, this document provides devices and methods for bypassing portions of the gastrointestinal tract to reduce nutritional uptake.

Ablation catheters and systems include flexible catheter tips with at least one positioning element and ports for delivery of an ablative agent to a target tissue. The positioning element is used to define a treatment zone and position the catheter proximate the target tissue for ablation. Ablative fluid is delivered to the target tissue at subtherapeutic, therapeutic, or supratherapeutic doses over different time periods, with rest periods between each dose, to cause effective ablation of the target tissue.

A method of direct peroral cholangioscopy includes inserting an endoscope into a guide sheath, inserting the guide sheath and endoscope into the duodenum, extending a tissue retrieval device through the endoscope into the duodenum, extending an anchor line into the duodenum, collecting biological matter using the tissue retrieval device, and withdrawing the cholangioscope and tissue retrieval device from the duodenum along the anchor line. A cholangioscopy system includes a steerable guide sheath and a cholangioscope including a shaft extending to a distal end face for displacement within the steerable guide sheath, a tool lumen extending along the shaft and exiting at the distal end face, an anchor line lumen entering the shaft between a proximal end portion and the distal end face and exiting at the distal end face, and an exchange lumen extending from the tool lumen to an exterior of the shaft at the distal end face.