21results about "Bronchi" patented technology

Pulmonary treatment devices, systems and methods of use are provided which take into account the vast tissue damage of advanced COPD sufferers and provide treatments designed specifically to treat the particularly compromised lung tissues that are present in these patients. These treatments reduce trapped air volume, tension lung tissue and enhance lung elastic recoil. In particular, a variety of embodiments of pulmonary treatment devices are provided. The devices are comprised of a shape memory material wherein the devices are able to be expanded under tension, and then are able to recoil back toward an original relaxed or resting shape as the devices are deployed into the tissue. This action causes the pulmonary treatment devices to corkscrew into damaged tissue, becoming sufficiently entwined to allow pulling of the tissue by retraction of the device. This in turn re-tensions the lung causing lung volume reduction.

The present technology includes an implant for treating excessive central airway collapse (ECAC) of an airway. The implant can comprise a wire-form stent configured to be positioned within the airway. The stent can comprise a C-shaped sidewall, and is configured to be positioned within the airway such that the C-shaped sidewall is positioned proximate a cartilaginous portion of the airway and presses outwardly against the cartilaginous portion.

An endobronchial valve designed for placement in an airway to modify lung volume to a portion of the lung. The valve comprises a frame with a collapsible and expandable configuration, and a valve member made of a flexible material attached to the frame. The valve member includes a distal valve member with a conical shape and nested within a proximal valve member with a frusto-conical shape. The distal valve member features a cavity communicating with an opening at the base, while the proximal valve member has openings of varying diameters. The base of the distal valve member is positioned through the opening of the proximal valve member, allowing for effective modification of lung volume. The valve systems further include a swellable material for changing a fluid flow rate over time to gradually modify lung volume and mitigate complications such as pneumothorax.

The present invention relates to a stent delivery device having: a first support rod into which a first movable body is inserted; a fixed magnet; and a second support rod into which a second movable body is inserted, wherein a first driving magnet included in the first movable body and a second driving magnet included in the second movable body rotate relative to each other by means of the control of an external magnetic field at a predetermined angle around an axis in a first direction with respect to the fixed magnet, thereby separating a first coupling piece and a second coupling piece from a first coupling groove and a second coupling groove and enabling a stent to unfold.

A one-way valve for a bronchus, comprising: a support portion, the outer wall of the support portion being used for abutting against the inner wall of a bronchus; and an air-permeable portion provided in the support portion and connected to the inner wall of the support portion. The support portion and the air-permeable portion are of an integrated structure. The technical solution in the prior art of a combination of a nickel-titanium alloy framework and a coating material can be replaced with the present invention, such that the production cost of the one-way valve for a bronchus can be reduced; moreover, the yield of one-way valves for a bronchus can be increased, and the popularization and use of the one-way valves for a bronchus can be facilitated.

Pulmonary treatment devices, systems and methods of use are provided which take into account the vast tissue damage of advanced COPD sufferers and provide treatments designed specifically to treat the particularly compromised lung tissues that are present in these patients. These treatments reduce trapped air volume, tension lung tissue and enhance lung elastic recoil. In particular, a variety of embodiments of invertible pulmonary treatment devices are provided. The devices are comprised of a shape memory material wherein the devices are able to be expanded under tension, and then are able to recoil back toward an original relaxed or resting shape. In these embodiments, a portion of the device is invertible. Thus, each device is able to store energy at least in the inversion, wherein the energy is utilized to continually tension the lung as the device relaxes toward its original shape.

A tool for removing and / or displacing a foreign body in a patient's body, comprising: a sleeve element (40) comprising a proximal end, a distal end and a central axis, wherein the sleeve element (40) comprises a tubular body defining an inner lumen (42) and is movable in the proximal and distal direction; an operative part (160) comprising a proximal end, a distal end and a central axis generally coaxial to the central axis of the sleeve element (40): a stabilizer which has a proximal end and a distal end; a plurality of intervention elements (166), each comprising a proximal end and a distal end; wherein the majority of engagement elements (166) are connected to the stabilizer and extend distally from the distal end of the stabilizer, wherein the engagement elements (166) are configured such that they transition between an open and a closed configuration in response to a force acting on the engagement elements (166), wherein the distal ends of the engagement elements (166) are configured such that they move away from the central axis of the operative part (160) when transitioning from the closed to the open configuration; and one or more grip elements (167) arranged on the stabilizers, extending from the engagement elements (166) to the central axis of the operative part (160) when the engagement elements (166) are in a closed configuration, wherein the sleeve element (40) comprises a plurality of secondary conduits (243), each of the secondary conduits (243) having a proximal and a distal end, and wherein the tool further comprises a pressure element (46) which includes a plurality of compression wires (146), wherein at least a part of each of the compression wires (146) is contained in the plurality of secondary lines (243), wherein each of the compression wires (146) has a proximal end and a distal end, wherein the compression wires (146) are configured such that they transition between an extended and a contracted configuration.

A bronchial flow control device comprises a tubular body comprising struts extending between first and second ends, the struts being expandable between radially contracted and expanded shapes, a valve disposed proximate the second end, a membrane covering the struts, and microfibers on the membrane. A method comprises attaching a bronchial valve to a delivery catheter in an unexpanded state, inserting the bronchial valve into an airway, actuating the delivery catheter to radially expand the bronchial valve, pushing microfibers into an anatomic duct wall, detaching the delivery catheter from the bronchial valve, and withdrawing the delivery catheter from the airway. A delivery system for a valve comprises a handle, a first actuator to control a rotational position of a first coupler, a second actuator to control a radial position of a second coupler, and a third actuator to control an axial position between the first and second couplers.

Certain embodiments provide a method for controlling airflow in a lung of a respiratory system of a patient. The method generally includes placing a device in an airway passage, wherein the device comprises: an outer wall and an inner wall defining a lumen from a proximal end to a distal end of the device and changing a volume of the lumen over time.

The application belongs to the technical field of medical devices, and is a kind of airway stent, comprising a stent body and a covering film arranged on the stent body, characterized in that the stent body comprises a fixed stent section and a movable stent section arranged at the end of the fixed stent section, and the covering film is arranged on the fixed stent section; at least one movable part in the form of an opening is arranged on the movable stent section, and the radial dimension of the movable stent section is greater than that of the fixed stent section. According to the airway stent in the application, the movable stent section with a radial dimension greater than that of the fixed stent section is arranged to increase the anchoring force of the airway stent, so that the airway stent is not prone to displacement, and the movable part in the form of an opening is arranged to increase the deformation space of the movable stent section, reduce the stimulation of the airway stent to the inner wall of the airway, and prevent the growth of granulation tissue.

Apparatus (20) is provided for use with a guidewire (12). The apparatus includes a guide tube (22) having a guidewire-engaging portion (122) and a slit (28) extending proximally along a wall of the guide tube, from a distal end (32) of the tube, a proximal end (29) of the slit being located distally to a proximal end (30) of the tube. A first stent (52) surrounds the tube and is advanceable together with the tube into a lumen of a subject, the first stent being slidably advanceable off the distal end of the tube; and a second stent (54), proximal to the first stent, surrounding a proximal portion of the tube, and advanceable off the distal end of the tube into the lumen, and placed alongside the first stent subsequently to advancement of the first stent off the distal end of the tube. Other applications are also described.

The present application relates to a method of using a self-adjusting stent assembly and a kit comprising the same. A method of using a self-adjusting stent assembly, comprising: estimating a body lumen diameter associated with a portion of a body lumen in which the stent assembly is to be placed; determining a target expanded stent diameter of the stent assembly to be placed in the portion of the body lumen based on the estimated diameter; selecting a stent assembly for stent implantation of the portion of the body lumen, wherein the stent assembly is configured to expand from an initial diameter to an expanded diameter within an expanded diameter range; wherein the expanded diameter range is from about 9 mm to about 5.5 mm; and wherein the target expanded stent diameter is within the expanded diameter range; and applying a persistent radial force to a wall of the portion of the lumen, wherein the radial force is less than about 0.33 N / mm.

The application relates to an implant, a conveying mechanism, a lung volume reduction implant device and system, the lung volume reduction implant device comprising an implant and a conveying mechanism, the conveying mechanism being arranged to controllably release or recover the implant; the implant comprising a proximal end, a distal end and an intermediate section, the intermediate section being capable of being deformed between a coiled shape and a straightened shape; the conveying mechanism comprising a pushing part and a first connecting part connected with the pushing part, the first connecting part being detachably connected with the proximal end. The application can block the bronchus, the contraction stress area of the implant is complete, and the success rate of the lung volume reduction surgery is effectively improved. A plurality of implants do not need to be implanted, and the burden on the patient is further reduced. The implant and the conveying mechanism are detachably connected, the implant can be loosened in situ, the implant does not need to be pushed forward, and precise release is achieved.

The invention relates to prosthesis for treating pulmonary fibrosis, in particular, idiopathic pulmonary fibrosis (IPF), and a method for treating pulmonary fibrosis, in particular, idiopathic pulmonary fibrosis (IPF).

A method for treating an intestine with an expandable scaffolding expanded within the intestine. After placing the expandable scaffolding at a target location, such as across a fistula, the first and second end portions of the expandable scaffolding are radially expanded such that the first and second end portions contact an inner surface of the intestine on opposing sides of the fistula, anchoring the first and second end portions to the intestine. Radially expanding the first and second end portions foreshortens the medial portion along the longitudinal axis such that the first and second end portions are drawn closer together along the longitudinal axis as the medial portion foreshortens to close the fistula.

The application belongs to the technical field of medical devices, and relates to an airway stent, which comprises a stent body and a covering film arranged on the stent body, wherein the stent body comprises a waist stent section and a dense net bare stent section arranged at the end of the waist stent section, the covering film is arranged on the waist stent section, and the mesh density of the dense net bare stent section is greater than that of the waist stent section. According to the airway stent in the application, the stimulation of the airway stent to the inner wall of the trachea can be reduced, so that the growth of granulation tissue is effectively avoided, and the airway lumen is prevented from being narrowed again.

The invention relates to a stent (1) with a main body (2) and at least one leg (3, 4) connected to the main body (2), wherein the stent (1) is formed from a wire mesh. A transition region (5, 6) between the main body (2) and the leg (3, 4) has a hinge connection (7) and a pivot region (8) adjacent to the hinge connection (7), such that an angle (α, β) formed between the longitudinal axes (L2, L3, L4) of the main body (2) and the at least one leg (3, 4) is adjustable.

The invention relates to a stent (1) having a main body (2) and at least one leg (3, 4) connected to the main body (2), wherein the stent (1) is formed from a wire mesh. A transition region (5, 6) between the main body (2) and the leg (3, 4) comprises an articulated connection (7) and a pivoting region (8) adjacent to the articulated connection (7), such that an angle (α, β) formed between the longitudinal axes (L2, L3, L4) of the main body (2) and the at least one leg (3, 4) is adjustable.

An airway support device of the present disclosure can be attached to tracheal and / or bronchial cartilage on opposing sides of a tracheal and / or bronchial wall to pull the tracheal and / or bronchial cartilages toward each other to reconstruct and / or reshape to a normal anatomy across the membranous tracheal and / or bronchial wall and thus relieving tension across the tracheal and / or bronchial wall. The airway support device can include at least two longitudinal strips that extend longitudinally along and are attached (e.g., sutured) to the trachea and / or bronchus on opposite sides of the tracheal and / or bronchial wall. Pairs of lateral strips extending from each of the longitudinal strips can be attached to each other under tension. The tracheal and / or bronchial wall can be attached (e.g., sutured) to the lateral strips to open the airway of the trachea and / or bronchus.

A suitable intrabronchial implant is provided. According to an embodiment of the present technology, an implant includes a proximal end portion and a distal end portion spaced apart from each other along a longitudinal axis and configured to be deployed in a first and a second airway of a bronchial tree, respectively, the second airway being a generation greater than the first airway. The implant includes wires extending along a wire path within a tubular region aligned coaxially with the longitudinal axis. The wires include first and second sections alternately arranged along the wire path and extending distally and proximally, respectively, in a circumferential direction about the longitudinal axis. The implant is configured to transition from a low-profile delivery state to an expanded, deployed state at a treatment location and to enable mucociliary clearance from immediately distal to an area immediately proximal to the implant while deployed at the treatment location.

An implantable artificial bronchus, including a body having at least one fiber woven to form a lattice structure. The body includes a proximal upper opening and a distal lower opening in fluid communication with the proximal upper opening, and the body at least partially tapering along a length of the body toward the distal lower opening. The body further includes a first loop formed from the at least one fiber and disposed along the body between the proximal upper opening and the distal lower opening. A diameter of the proximal upper opening is larger than a diameter of the distal lower opening. The proximal upper opening is formed from a number of proximal loops and the distal lower opening is formed from a number of distal loops. The number of distal loops is less than the number of proximal loops.