The present disclosure relates generally to the field of medical devices and establishing access to body lumens. In particular, the present disclosure relates to medical devices, systems and methods for facilitating access to an opening of a body lumen through an endoscope by at least partially dilating the opening with fluid from a fluid source prior to contacting the body lumen.

Devices, systems and methods using two, three or more pigtails for precisely imaging an aortic valve complex with minimal contrast and/or for advancing an instrument, such as a wire, or device, such as a transcatheter valve, across an aortic valve. These devices, systems and methods may be used to diagnose and/or treat patients with aortic stenosis, other valvular heart disease or other cardiovascular or non cardiovascular disease, facilitating precise contrast or drug or device delivery, precise pressure measurement and/or precise drainage or sampling.

A power injector system having a power injector for enabling delivery of fluid in an injection procedure to be performed on a patient may include one or more processors; a first user interface; and a second user interface. The first user interface and the second user interface may be configured to accept a plurality of user inputs associated with control of a plurality of operations of the power injector system and display information associated with the plurality of operations. One of the first user interface and the second user interface may be proximate to the power injector and the other may be remote from the power injector. The one or more processors may be programmed and/or configured to independently control the first user interface and the second user interface based on a first user input and a next user input received from the first user interface and/or the second user interface.

A multi lumen catheter assembly. The assembly provides an expandable, low profile, fixed length sheath and catheter, with fixed infusion ports. The assembly has an expandable outer sheath that expands upon pressure activation with a fluid and the sheath allows the fluid to exit from at least one predetermined fixed location from a distal end of the catheter assembly. The catheter assembly can be used in various medical device procedures, such as a TIPS (Transjugular Intrahepatic Portosystemic Shunt) procedure, or anywhere a low profile, multi lumen, infusion catheter system is desired.

An endoscope. One or more image sensors are designed to capture image data in visible light. One or more image sensors are designed to capture image data in a nonvisible portion of the electromagnetic spectrum. An insertion shaft is designed to support the visible and nonvisible image sensors at or near a distal tip with sufficient rigidity to permit guidance to a surgical site in a human body. Image processing software is trained through machine learning to enhance image quality of at least the nonvisible portion of the image, and to present the enhanced nonvisible image as a real-time, visible presentation to a surgeon. A handle has electronics for drive of illumination circuitry and to receive imaging signal from the imaging circuitry. A joint between the proximal handle portion and the insertion shaft is designed to separably connect the insertion shaft to the proximal handle portion. When separated, the joint permits removal of the insertion shaft for disposal and replacement.

A method of making a high flexibility distal zone on a neurovascular catheter is provided. The method includes the steps of dip coating a removable mandrel to form a tubular inner layer on the mandrel, coating the tubular inner layer with a tie layer, applying a helical coil to the outside of the tie layer, positioning a plurality of tubular segments, heating the tubular segments to form the high flexibility distal zone on the neurovascular catheter; and removing the mandrel.

Sinusitis, enlarged nasal turbinates, tumors, infections, hearing disorders, allergic conditions, facial fractures and other disorders of the ear, nose and throat are diagnosed and/or treated using minimally invasive approaches and, in many cases, flexible catheters as opposed to instruments having rigid shafts. Various diagnostic procedures and devices are used to perform imaging studies, mucus flow studies, air/gas flow studies, anatomic dimension studies, endoscopic studies and transillumination studies. Access and occluder devices may be used to establish fluid tight seals in the anterior or posterior nasal cavities/nasopharynx and to facilitate insertion of working devices (e.g., scopes, guidewires, catheters, tissue cutting or remodeling devices, electrosurgical devices, energy emitting devices, devices for injecting diagnostic or therapeutic agents, devices for implanting devices such as stents, substance eluting devices, substance delivery implants, etc.

An ointment squeeze ball has an exit orifice for dispensing ointment. A colorant squeeze ball has an exit orifice for dispensing colorant. A mixing tube has an input end, an exit applicator tip, and an elongated passageway with helical mixing vanes. A central component in a Y-shaped configuration with a central passageway removably couples the ointment squeeze ball and the mixing tube. The central component has a lateral leg with a lateral passageway removably coupling the colorant squeeze ball and an intermediate region of the central passageway.

Embolization particles can be safely delivered to the left gastric artery of a patient by introducing the distal end of a catheter in the patient's left gastric artery, inflating a balloon located near the distal end of the catheter so that the balloon prevents blood from flowing through the left gastric artery, and injecting a mixture of particles and contrast agent into the proximal end of the catheter so that they flow through the catheter. In addition, a path is provided for blood to flow into the catheter through an opening in the sidewall of the catheter at a position that is proximal to the balloon, and out through the distal end of the catheter. This blood flow helps to carry the particles along to their destination in the distal portion of the left gastric artery. The particles are also prevented from flowing into portions of the patient's artery system that are proximal of the balloon.

Microcatheter for delivering a substance (e.g., infusion agent including embolization material and/or contrast enhancing material) in a small blood vessel towards a target bodily part. Includes a single lumen surrounded by tubular wall having outer diameter and opened at both ends; tubular wall proximal portion is connectable to a pressure source and reservoir containing infusion agent, and tubular wall distal portion ends with a tip; the tubular wall distal portion includes an infusion agent flow disruption section configured to disrupt passage therethrough of incoming retrograded flow of infusion agent, during continuous delivery of infusion suspension from the reservoir to the tip. Disclosed are methods using the microcatheter for performing local embolization in a small blood vessel feeding a (for example, cancerous) target bodily part, and for delivering infusion agent in a small blood vessel towards such target bodily part. Also disclosed are devices and methods for filtering non-target infusion agent.