Abstract: Described is a low voltage, pulsed electrical stimulation device for controlling expression of, for example, follistatin, a muscle formation promotion protein, by tissues. Epicardial stimulation is especially useful for heart treatment. Follistatin controlled release is also useful for treating other ailments, such as erectile dysfunction, aortic aneurysm, and failing heart valves.

Abstract: Embodiments herein describe tools, instruments and methods for aseptic loading, dispensing and/or delivering cells into an implantable device and aseptically and selectively sealing a device inside a sterile package as well as and storing and preparing for shipment the cell-filled device.

Abstract: A fluid delivery assembly for an infusion device is disclosed herein. The fluid delivery assembly includes a body section having a fluid chamber, a fitting section extending from the body section, and a plug component. The fitting section has a sidewall structure with a through-hole formed therein. The sidewall structure at least partially defines a cavity. The plug component is rotatably coupled to the fitting section. The plug component includes a lower section located in the cavity, an actuator to facilitate rotation of the plug component, and a fluid flow path defined in the lower section. The fluid flow path has an outlet opening and a chamber opening fluidly coupled to the fluid chamber. The sidewall structure blocks the outlet opening when the plug component is in a closed position. The outlet opening is fluidly coupled to the through-hole when the plug component is in an open position.

Abstract: An assembly for a fluid infusion device is disclosed herein. The assembly includes a fluid reservoir and an infusion set component. The reservoir includes a body section, a fluid chamber, a housing lock structure, and a fitting section. The housing lock structure couples the reservoir to a housing of the infusion device to inhibit axial movement of the reservoir relative to the housing. The fitting includes a connector lock structure integrated therein. The infusion set component includes tubing, a cannula at one end of the tubing, and a connector at the other end of the tubing. The connector includes a main body section, a hollow needle, in fluid communication with the tubing, and a reservoir lock structure integrated with the main body section. The reservoir lock structure cooperates with the connector lock structure to removably couple the connector to the reservoir.

Abstract: An indwelling assembly includes an inner needle having a sharp needlepoint, an inner needle hub fixed to the inner needle, a hollow elongated outer member in which the inner needle is positioned and movable in a distal direction relative to the inner needle after puncturing the blood vessel to position the elongated outer member at a desired position in the blood vessel, an outer member hub fixed to hollow elongated outer member, a projection removably connected to the outer member hub and configured to be engaged by a finger of the user to apply a force to the projection causing the outer member hub and the hollow elongated outer member to move together with the projection in the distal direction relative to the inner needle and the inner needle hub, and an elongated movable member that is movable relative to the hollow elongated outer member and the outer member hub.

Abstract: A method for cooling a medical device includes fluidly connecting a cooling fluid reservoir to a medical device. The fluid connection includes a fluid out-flow path and a fluid return path corresponding to the fluid reservoir. The cooling fluid is pumped from the fluid reservoir to the medical device. The medical device is energized and the heat generated by the energization is absorbed by the cooling fluid pumped to the medical device. The cooling fluid is received at the reservoir containing the absorbed heat. The cooling fluid transfers the absorbed heat to the cooling fluid in the reservoir and to the environment adjacent to the reservoir.

Abstract: The subject technology is embodied in a method for predicting a delivery rate of a plurality of drugs dispensed by multiple infusion pumps at a delivery point. The method includes receiving one or more operating parameters related to multiple drug pumps and a carrier fluid pump, wherein each of the drug pumps dispenses a drug, and the carrier fluid pump dispenses a carrier fluid. The method also includes determining a delivery rate of a first drug at the delivery point. This can be done by predicting time variation of a concentration of the first drug at the delivery point based on a mathematical model of a mixed flow through a fluid path that terminates at the delivery point. The mixed flow includes the drugs and the carrier fluid. The model includes the operating parameters and a plurality of flow-parameters related to the mathematical model of the mixed flow.

Abstract: A pump for pumping fluid includes a tube platen, a plunger, a bias member, inlet and outlet valves, an actuator mechanism, a position sensor, and a processor. The plunger is configured for actuation toward and away from the infusion-tube when the tube platen is disposed opposite to the plunger. The tube platen can hold an intravenous infusion tube. The bias member is configured to urge the plunger toward the tube platen.

Abstract: An improved Automated Arterial Pressure Regulating Device wherein said device shall have the means to infuse a vasopressor and/or a vasodilator at user determined rates as well as allow the device to automatically maintain a user determined arterial pressure. Auto regulation of pressure is assisted by means of a physiologic balance indicator and Warnings, Cautions, and Advisories in the Alerts area of the display screen.

Abstract: Method and system for providing basal profile modification in insulin therapy for use with infusion devices includes periodically monitoring the analyte levels of a patient for a predetermined period of time in order to determine, based on the monitored analyte levels, an appropriate modification factor to be incorporated into the underlying basal profile which was running at the time the periodic monitoring of the analyte levels were performed.

Abstract: A system for pairing a controller and an infusion pump is disclosed. The system includes an infusion pump, a controller device and a user interface residing on both the infusion pump and the controller. The user interface includes a pairing mode for enabling wireless communication between the infusion pump and the controller device, wherein the user interface requires both the infusion pump and the controller to be in the pairing mode simultaneously. Also, a method of changing a power source in an infusion pump is disclosed. The method includes placing the infusion pump in idle mode wherein the infusion pump stops delivery. Removing the first power source from the infusion pump. Replacing the first power source with a second power source in the infusion pump, and maintaining the insulin on board during the changing of the first power source with the second power source.

Abstract: A surgical injection device includes at least one tubular element defining a passageway. The passageway is configured for disposal of a selected volume of an agent and an evacuator disposed within the passageway. An actuator is engageable with the evacuator to entirely expel the selected volume of the agent from the passageway to a selected site. Spinal constructs, implants, systems and methods are disclosed.

Abstract: An injector device and method for use, and particularly a veterinary injector, is disclosed herein. One aspect of the present technology, for example, is directed toward a veterinary injector including a flexible container configured to house a medicament, a plunger configured to be slidably received within a lumen of the container, a needle, and a stabilizer at the distal portion of the container and configured to be grasped by a user. The stabilizer can include a first flap extending away from the hub in a first direction, a second flap extending away from the hub in a second direction, and a third flap extending away from the hub in a third direction.

Abstract: The present disclosure is generally directed to a drug delivery device for selecting and dispensing a number of user variable doses of a medicament and to a non-numerical display for such a device. The display comprises a housing with at least one window, a dosing element movable relative to the housing during dose setting and/or dose dispensing, and a movable indicator element visible through the at least one window The indicator element is coupled to the dosing element and/or to the housing such that it moves not proportional to the dosing element.

Abstract: An injection assembly includes a housing with a barrel positioned within the housing. The barrel includes an axis extending from a proximal end to a distal end thereof and a chamber for storing medicine. An elongate anti-rotation shaft is rotationally fixed to the housing and has a non-circular cross-section. The injection assembly includes an inner screw having an inner screw opening to complementarily receive the anti-rotation shaft to prevent rotation of the inner screw with respect to the anti-rotation shaft but allow respective linear translation along the axis. An outer screw is positioned within, and rotatable with respect to, the housing and has an outer screw opening to threadably receive the inner screw, wherein rotation of the outer screw translates the inner screw along the axis and along the anti-rotation shaft. A plunger is coupled to the distal end of the inner screw and is moveable with respect to the chamber to push the medicine out of the chamber when the outer screw is rotated.

Abstract: A laminated gasket to be inserted in a syringe barrel prevents leakage of a highly permeable liquid drug which may otherwise occur when an inert film of the gasket does not intimately contact an inner wall of the syringe barrel. The laminated gasket has a circumferential surface portion , a liquid contact surface, a bottom surface , and a threaded hole adapted to be in threaded engagement with a distal end portion of a plunger. The threaded hole has an internal thread provided on an inner peripheral surface thereof and including a plurality of periodic thread portions. Provided that an innermost periodic internal thread portion has a diameter Fl, that the other periodic internal thread portions each have a diameter F2 and that a distal one of periodic thread portions of an external thread provided on the distal end portion of the plunger has a diameter D1, a relationship F2>D1>F1 is satisfied.

Abstract: An injection device includes a housing having a receptacle for a vessel for holding injection fluid; an operator-manipulated element for setting an injection dose; a dosing member rotatable about a longitudinal center axis relative to the housing when setting the injection dose; a feed part; and, a latching unit acting between the feed part and housing. The dosing member has a zero position whereat no dose is set and an injection position whereat an intended dose of injection fluid is set. A spring acts between the dosing member and the housing to return the dosing member from an intermediate position to the injection position or a zero position.

Abstract: The present invention is generally directed to a dose setting mechanism and a drug delivery device herewith, i.e. a handheld injection device for selecting and dispensing a number of user variable doses of a medicament. The dose setting mechanism comprises a dose setting member (50) rotatable relative to a housing (10, 20) in a first direction for dose setting and in an opposite second direction for dose correcting, a cam ring (150) and a coupling member (70) coupled to a drive member (110). A ramped interface (52, 152) is provided between the dose setting member (50) and the cam ring (150) such that rotation of the dose setting member (50) relative to the cam ring (150) in the second direction causes axial displacement of the cam ring (150).

Abstract: A logging device adapted to be attached to a pen drug delivery device (210) and capture a property value related to the dose amount of drug expelled from the drug delivery device during an expelling event, the logging device comprising a bore in which a snap lock with a flexible wire portion is arranged circumferentially in the bore, the wire being adapted to be moved laterally by a projection on the pen device and subsequently snap inwardly when the pen device is inserted axially in the bore. In this way an axial snap lock is provided between the logging device and the drug delivery device.

Abstract: An administration instrument includes an injection button which can be pressed at an angle that is not parallel to a needle with respect to a direction in which the needle is inserted into skin. As a result, it is possible to prevent a force of pressing the injection button from being transmitted in the direction in which the needle is inserted into the skin deeper than initial insertion of the needle, thereby achieving an administration under a stable state.

Abstract: The present invention provides an injection needle device for an endoscope that can prevent an injection needle from unintentionally being exposed. An injection needle device for an endoscope comprises an outer tubular body (20), an inner tubular body (30) provided in the outer tubular body (20) and an injection needle (50) inserted into one end part of the inner tubular body (30), wherein the inner tubular body (30) includes an inner layer (31) and an outer layer (35) directly or indirectly contacted with an outer surface of the inner layer (31), and a water absorption coefficient of the outer layer (35) is lower than that of the inner layer (31).

Abstract: Disclosed is a Huber needle assembly that may include an upper body connected to a lower body, the assembly being structured to retain a needle for insertion/extraction of the needle into/from an insertion site. The upper body can statically retain the needle while the lower body may slidably receive the needle. The lower body can further include a catch that engages a tip of the needle and/or misaligns the tip of the needle with a needle aperture of the lower body to place the assembly in a safety-lock position, preventing rebound, needle-stick injury, and/or any type of exposure of the needle tip to an environment outside of the lower body. The assembly can further bias the needle in a direction so as to prevent re-emergence of the needle tip after being withdrawn into the lower body.

Abstract: A needle attachment and detachment assist device includes a frame body, a syringe guide jig, and a needle guide jig. A guide hole is formed in the syringe guide jig. In the needle guide jig, a needle insertion hole is formed on a central axis of the guide hole. The needle insertion hole includes a center hole portion and a rib guide groove. When a syringe is inserted into the guide hole, and a needle member is further inserted into the needle insertion hole, rotation prevention of the needle member is achieved. In this state, when the syringe is rotated in a first direction, the needle member can be clamped to a thread portion of the syringe. When the syringe is rotated in a second direction, the needle member can be loosened.

Abstract: A device for delivering a fluid into a biological tissue includes hollow microneedles (10) projecting from a surface (12) of a substrate (14), and a guide element (18) spaced from the substrate. The guide element provides a tissue-contact surface (20) that defines a tissue contact plane oblique to the surface (12) of the substrate (14).

Abstract: By providing a surface light source that planarly emits first illuminating light FL in the blue wavelength region of 400 to 500 nm and second illuminating light SL in the red wavelength region of 600 to 660 nm, and by emitting illuminating light in these specific wavelength region, it makes it possible to visually identify the position of veins easily.

Abstract: A cap for a nasal spray apparatus, the cap including a spray dispensing mechanism and further including a base sealingly mountable on a container of liquid substance to be dispensed; an intermediate section arranged for reciprocating movement relative to the base the intermediate section including the spray dispensing mechanism and having a spray dispensing passage; a cover-section having a depressible flexible portion, coupled to the intermediate-section; and a Light Emitting Diode (LED) connected to a power source through an electric circuit, the LED mounted adjacent the spray dispensing passage so as to be inserted into a nostril therewith; wherein the depressible flexible portion is arranged and configured to cause closure of the electric circuit for activating the LED and to actuate the spray dispensing mechanism, to provide both illumination and spray of liquid substance into the nostril.

Abstract: Embodiments of the disclosure include a system for administering a dosage of an inhalable product to a user including a vaporizing device for converting an active pharmaceutical ingredient (API) into the inhalable product to treat an affliction. The vaporizing device includes a communication element to send/receive at least one piece of dosage data to/from a portable electronic device, the dosage data corresponding to one or more properties of the dosage. The system also includes at least one processor and a memory. Memory includes machine-readable instructions that, when executed by the at least one processor, cause the system to receive an indicator corresponding to the API utilized by the vaporizing device, to determine the dosage for the API utilized by the vaporizing device, to transmit, to the user, instructions for administering the dosage, and to request feedback from the user regarding the efficacy of the dosage.

Abstract: Described herein are introducer devices and methods for using an introducer device to facilitate passing an endoluminal instrument to a target region of a body cavity. An introducer device may include a tubular member having an inner wall that defines a channel configured to receive the endoluminal instrument and a plurality of projections disposed in the channel at perimetrically spaced apart locations around the inner wall, where the projections extend inward and are configured to offset the endoluminal instrument from the inner wall, thereby creating a space between the endoluminal instrument and the inner wall. A method for using an introducer device may include passing the endoluminal instrument to a first instrument insertion depth within the introducer device, advancing the introducer device in the body cavity, and advancing the endoluminal instrument to a second instrument insertion depth within the introducer device.

Abstract: A flow sensor system for ventilation treatment comprises a flow conduit configured to allow gas flow between a first region and a second region, the flow conduit defining a lumen for the gas flow; a flow restrictor disposed within the lumen of the flow conduit between the first region and the second region; a first absolute pressure sensor disposed adjacent to the first region of the flow conduit and configured to measure a pressure of the gas flow at the first region of the flow conduit; and a second absolute pressure sensor disposed adjacent to the second region of the flow conduit and configured to measure pressure of the gas flow at the second region of the flow conduit.

Abstract: Provided is a method that includes automatically providing air/oxygen at a pre-selected maximum pressure limit, breath volume and respiratory-rate. The pre-selected maximum pressure limit, breath volume, and respiratory-rate are automatically set as a function of a size of a mask coupled to an air/oxygen supply system. Further provided is a ventilator system that includes a ventilator mask, a ventilator supply system, and a mask conduit. The ventilator mask is configured in a size that will fit upon a selected range of sizes of human faces. The ventilator supply system includes an air/oxygen source and an air/oxygen regulator system configured to regulate air/oxygen flow parameters as a function of the size of the mask. The mask conduit is configured to couple the ventilator supply to the ventilator mask.

Abstract: An airway assist device (AAD) is provided. The device includes an upper AAD component and a lower AAD component. The upper AAD component includes and upper tooth guide connected to an upper plate having a pair of depending legs. The upper AAD component further includes an upper force receiving plate. The AAD also includes a lower AAD component. The lower AAD component includes a lower tooth guide connected to a lower plate. The lower AAD component further includes a lower force receiving plate. The upper and lower AAD components are connected in a way that allows relative longitudinal movement between the two components between a neutral position and a plurality of extended positions. A ratchet mechanism inhibits movement of the lower plate from any extended position toward the neutral position. The ratchet mechanism may be manually disengaged to allow the lower AAD component to return to the neutral position. An oxygen delivery housing may be connected to the upper plate to distribute oxygen.

Abstract: An oral airway includes a first component having a first guiding surface and a second component having a second guiding surface. The first component and the second component are adapted to be removably coupled together such that the first guiding surface and the second guiding surface collectively define and encompass an interior passage through the oral airway that is dimensioned to direct, for example, a fiber-optic scope or an endotracheal tube extending through the interior passage for tracheal intubation. The first and second components are configured to be decoupled and independently removed from a patient's mouth without disrupting an endotracheal tube that has been extended through the conduit for tracheal intubation. The first and second components may be maintained in coupled disposition by an interlocking mechanical structure. The first and second components also may be maintained in coupled disposition by magnetism.

Abstract: An interface assembly comprises a nasal mask that includes a seal having a rolling portion. The rolling portion of the seal rolls over a portion of a clip that secures the seal to a frame. The frame has a ball and socket connection to a connector. The connector comprises an elbow having integrally formed exhaust holes and a swivel.

Abstract: A conduit for delivering a supply of gas under a positive pressure includes a conduit wall having a first conduit end and a second conduit end. The first conduit end is adapted to be attached to the supply of gas. The conduit wall is deformable between (a) an open condition in which the conduit wall defines a conduit passage along which the supply of gas can travel between the first conduit end to the second conduit end, and (b) a collapsed condition in which the conduit wall substantially collapses the conduit passage.

Abstract: There is provided an airway tube for breath sampling, comprising a breath sampling port comprising two or more inlets adapted to sample breath from the airway tube. The inlets are connected to each other through a junction located outside of the air passageway of the airway tube.

Abstract: The present invention provides an apparatus for nasally delivering a supraglottic jet ventilation and methods of treating breathing disorders by utilizing the apparatus for nasally delivering a supraglottic jet ventilation.

Abstract: An apparatus for supplying breathing air to a person includes a rebreathing system arranged in the air supply circuit, which removes CO2 at least in part present in the person's expiration air with a CO2 absorber, and treats the expiration air to supply treated air to the person again as inhalation air. The apparatus includes a condensate collection container (9) collecting water forming in the air supply circuit. The condensate collection container (9) is arranged at least in part below a reaction zone (17) of the CO2 absorber (1). At least one heat exchanger (10, 14) is provided in the CO2 absorber, via which heat from the air, which flows through the CO2 absorber and is heated as a result of the exothermic CO2 absorption reaction occurring in the reaction zone of the CO2 absorber, is dissipated.

Abstract: The present disclosure pertains to a pressure support system configured to adjust a pressurized flow of breathable gas delivered to a subject. The system is configured to simplify adjustments to humidity and/or temperature control and/or pressure support therapy that enhance the comfort level of the subject during therapy. The system is configured to generate output signals and/or determine various parameters related to the pressurized flow of breathable gas. The system is configured to receive feedback from the subject related to a comfort level of the subject during therapy and automatically adjust the pressurized flow of breathable gas and/or the predetermined therapy regime, provide feedback to the subject, and/or prompt the subject to make manual adjustments based on the output signals, the determined parameters, the feedback, and/or other information.

Abstract: A process and system of compatible cannulas with features that are linked and intentionally related including the Interior Cross Sectional Area (302) of the cannulas, the area of the opening(s) of the cannulas and the width of the opening(s) of the cannulas (303). When used in a method where the appropriate harvesting cannula (100) is selected for use with a desired reinjection cannula (100), the cannula kit (FIG. 8) provides increased benefit for maintaining live tissue viability, and minimizes the time of the surgical procedure. The cannula (100) as a kit or set (FIG. 8) is used for harvesting and for reinjection, and serves in extracting, processing and transferring adipose tissue.

Abstract: Apparatus and associated methods relate to a flexible extrusion having a number of radially extending members configured for slidable insertion into a lumen of a surgical catheter shaft. In an illustrative example, the extrusion may have a flexible wall and define an interior insert lumen extending along the longitudinal axis from a proximal end to a distal end. Each of the radially extending members may have a distal engaging surface. When the extrusion is slidably inserted, for example, into the lumen of the catheter shaft, the distal engaging surface of each of the plurality of radial extending members may slidably engage an interior surface of the catheter shaft. In some examples, the inserted extrusion may define an annular distribution of longitudinally extending channels between a proximal and a distal end of the catheter. The slidable construction may advantageously simplify assembly, for example. The channels may offer end-to-end communication.

Abstract: A biologics delivery device and method of use for promoting angiogenesis in occluded vessels and ischemic tissue of a patient are provided, wherein the biologics delivery device includes a catheter having a proximal end, a distal region having a distal end, and a side wall defining a catheter lumen; an expandable member disposed in the distal region, the expandable member configured to support a subintimal space in an occluded blood vessel of a patient, and to transition between a collapsed state and an expanded state; and a hollow needle having a penetration tip deployable from inside the catheter lumen to outside the catheter lumen, and into tissue surrounding the occluded blood vessel, wherein the expandable member in the expanded state allows the flow of oxygenated blood to the occluded blood vessel. Methods of using the inventive biologics delivery device also are provided to deposit the biologic from a subintimal space to tissue surrounding the occluded blood vessel.

Abstract: A torque-transmitting, locking instrument holder, includes a hollow body having a proximal end for receiving an instrument, a distal end for protrusion of the instrument, and a handle to be gripped by an operator. A device is provided for locking the handle to and unlocking the handle from the instrument at least partly disposed within the hollow body. A method for operating the instrument holder includes providing a hollow body having a proximal end for receiving an instrument, a distal end for protrusion of the instrument, and a handle to be gripped by an operator. The instrument is placed at least partly within the hollow body and the handle is locked to and unlocked from the instrument.

Abstract: Disclosed herein are catheter control handles that include various cam-based mechanisms for controlling the circumferential angle and radial magnitude of flexion of an attached catheter. Control handles can comprise a housing defining a longitudinal axis extending in distal and proximal directions, a cam member that is movable axially relative to the housing and also movable rotationally about the longitudinal axis relative to the housing, at least one follower engaged with the cam member such that the at least one follower moves relative to the handle in response to the movement of the cam member, and pull wires that are coupled to the at least one follower and that extend distally out of the handle and into a steerable catheter. The at least one follower can comprise plural axial sliders, a gimbal mechanism, a ball and socket mechanism, or other mechanisms.

Abstract: A biologics delivery device and method of use for promoting angiogenesis in occluded vessels and ischemic tissue of a patient are provided, wherein the biologics delivery device includes a catheter having a proximal end, a distal region having a distal end, a lumen extending there between, and a plurality of through-wall apertures distributed along the distal region, the plurality of through-wall apertures in fluid communication with the proximal end and the lumen, and an expandable member disposed in the distal region, the expandable member configured to transition between a collapsed state and an expanded state. Methods of using the inventive biologics delivery device also are provided to achieve substantially uniform distribution of the biologic into a subintimal space.

Abstract: Coronary access and delivery systems are provided. A coronary access system can include a coronary sinus guide and a first core. A lateral vein delivery system can include a lateral vein introducer and a second core. The coronary sinus guide, the lateral vein introducer, and the first and second cores may be designed or shaped to access a predetermined position within a heart of a subject. For example, the coronary sinus guide, the lateral vein introducer, and/or the first and second cores can be used in combination to access the predetermined position within the heart of the subject.

Abstract: The invention relates to an introducer sheath for catheters to be inserted into a vascular system comprising a connecting valve (2) and an insertion tube (3) having a proximal portion (4) and a distal portion (5), said distal portion (5) being of reduced diameter in comparison with the proximal portion (4), and to enable its diameter to be reversibly changed the insertion tube (3) is provided with longitudinally extending expansion elements with incisions (11, 11?, 12) designed as predetermined breaking points.

Abstract: A guide wire configured for intravascular insertion includes a core wire having a flattened portion configured to allow the core wire to preferentially bend in at least one plane that passes through a longitudinal axis of the core wire. A distal most end of the flattened portion is spaced from a distal most end of the core wire. The guide wire may further include a sensor element configured to measure a physiological variable in a living body and a coil surrounding a portion of the core wire.

Abstract: A method of selective catheterism of in a network of conduits of an anatomical structure including inserting a flexible distal end of a guide for catheterism through the network of conduits. An appendage is attached on the distal end of the guide, the appendage includes a channel extending along a longitudinal axis of the guide. A catheter is slid along the catheter until a distal face of the catheter surrounding the guide engages a proximal surface of the appendage. A force oriented in a distal direction is exerted with the catheter on the appendage, which disengages the appendage from the distal end of the guide within the network of conduits. Navigation through the network of conduits is continued with the flexible distal end of the guide once the appendage is removed.

Abstract: A method for treating back pain in a patient in need of such treatment is provided. The method includes positioning a balloon catheter in or adjacent to a treatment zone containing a basivertebral nerve. A chemical denervation agent is administered with the balloon catheter such that the chemical denervation agent chemically ablates at least a portion of the basivertebral nerve, Kits, systems and methods are disclosed.

Abstract: A balloon catheter has a balloon and an outer shaft fixed to a proximal end of the balloon. Each of the proximal end of the balloon and a distal end of the outer shaft has an inner projection extending in an axial direction of the balloon catheter, an outer projection extending in the axial direction, and a gap formed between the inner projection and the outer projection. At a fixing part, the inner projection of the balloon or the outer projection of the balloon is disposed in the gap of the outer shaft, and the inner projection of the outer shaft or the outer projection of the outer shaft is disposed in the gap of the balloon. The balloon catheter has improved fixing strength between the balloon and the outer shaft without increasing an outer diameter of the fixing part between the balloon and the outer shaft.