1036results about "Dilators" patented technology

Disclosed is a negative pressure suction sheath, comprising a sheath tube (1), a negative pressure connector (2), and a dilator (3). The negative pressure connector (2) comprises a main channel cavity (201) and a negative pressure suction channel cavity (202) located on one side of the main channel cavity (201). A proximal end of the sheath tube (1) is connected to a distal end of the main channel cavity (201). The dilator (3) is inserted from a proximal end of the main channel cavity (201) and extends out of a distal end of the sheath tube (1) and is detachably connected to the main channel cavity (201). A side channel port (205) is formed on one side of the main channel cavity (201), and the negative pressure suction channel cavity (202) is in communication with the side channel port (205). A cavity wall of the main channel cavity (201) is further provided with a pressure regulating port (203). The pressure regulating port (203) is arranged corresponding to the side channel port (205) or is located at one end of the side channel port (205) distal to the sheath tube (1), and the magnitude of the negative pressure in the sheath tube (1) can be adjusted by adjusting the opening size of the pressure regulating port (203).

The invention belongs to the technical field of medical instruments, and particularly relates to a portable pneumothorax catheterization device compact in structure and efficient in operation. The portable pneumothorax catheterization device comprises a puncture mechanism, an auxiliary fixing assembly and an adjusting assembly are arranged on the puncture mechanism, and a drainage tube is detachably connected into the puncture mechanism; the end, away from the puncture mechanism, of the drainage tube is connected with the collection bottle, a one-way valve is arranged at the end of the drainage tube, a through hole and a flowing groove are formed in the end, away from the one-way valve, of the drainage tube, and a thin tube is arranged in the drainage tube and communicated with the air bag. According to the safe and reliable portable pneumothorax catheterization device, a supporting cylinder, a limiting block and a reset spring of the puncture mechanism are linked, a puncture needle can be driven to stretch out for puncture by rotating the supporting cylinder, catheter propelling is synchronously completed, and traditional tedious steps such as puncture and incision are omitted; auxiliary instruments such as scissors and pliers are not needed, the problem that a traditional process is complex is solved, the method is suitable for emergency scenes such as pre-hospital first aid and field rescue, and time is won for rescue.

The invention discloses a balloon dilatation catheter, and relates to the technical field of interventional therapy instruments, the balloon dilatation catheter comprises a catheter, a bearing, an anchoring balloon and a nicked balloon, the bearing comprises a bearing inner ring connected with the catheter, and a bearing outer ring sleeving the periphery of the bearing inner ring and capable of circumferentially rotating relative to the bearing inner ring; the anchoring balloon is connected to the bearing outer ring and can expand in the radial direction relative to the catheter, and the anchoring balloon can be anchored in the blood vessel in the expansion state; the nicking balloon is located at the far end of the anchoring balloon and can expand in the radial direction relative to the catheter, and the nicking balloon can conduct extrusion nicking on plaques on the inner wall of the blood vessel in the expansion state. Due to the fact that the bearing outer ring and the bearing inner ring can relatively rotate in the circumferential direction, when the anchoring balloon is anchored, the catheter can rotate relative to the anchoring balloon, the deflection angle of the nicking balloon can be adjusted by rotating the catheter, the nicking balloon can conduct extrusion nicking on plaques at different positions in the circumferential direction of the inner wall of a blood vessel in the multiple nicking processes, and the nicking effect is improved. And the dilation effect of the balloon dilatation catheter on vascular stenosis is improved.

The utility model is suitable for the technical field related to medical instruments, and provides a valve auxiliary system sheath which comprises a shell assembly and a catheter sheath tube arranged on the shell assembly. The bending adjusting handle is used for adjusting the angle of the tail end of the catheter sheathing canal, and the bending adjusting handle is connected with the shell assembly; the catheter sheath is used for being matched with the catheter sheath tube to achieve introduction of an interventional instrument or conveying of an auxiliary instrument; the flushing valve is used for conveying medicaments, and the flushing valve is communicated with the catheter sheath through an extension tube body; the catheter sheath tube, the catheter sheath, the flushing valve and other components are arranged in a matched mode, so that the dilator can be always kept in the catheter sheath tube in the original position in the process that the catheter sheath tube enters the access blood vessel of a patient, blood cannot permeate out of a product, use is convenient, and the valve positioning accuracy and the operation safety are effectively improved.

The invention relates to the technical field of vaginal irrigation flow rate control, in particular to a vaginal irrigation expansion control method based on multi-modal data. The method comprises the following steps: acquiring pelvic floor electromyographic signals, pH values and flushing flow velocity data of a patient in a vaginal flushing expansion process; the myoelectricity influence degree of the current patient is obtained according to the pelvic floor myoelectricity signals and the flushing flow speed data of the matched historical patient of the current patient in the flushing expansion stage; obtaining the pH influence degree of the current patient according to the difference between the pH value of the current patient at each moment and the normal pH value range of the vagina and the change condition of the pH value in the preset domain time period at each moment; according to the myoelectricity influence degree and the pH influence degree, the flow speed adjusting weight of the current patient is obtained in real time, and the flushing flow speed of the current patient in the vagina flushing expansion process is controlled. The flow rate adjusting weight is accurately obtained in real time, so that the flushing flow rate is accurately adjusted, and the vagina is effectively prevented from being damaged in the flushing expansion process.

A method for enhancing health quality and performance is disclosed. The method involves providing multiple sets of nasal dilators, each set having a distinct configuration. The dilator set being used is then identified. The health quality / performance of the user using the identified set of nasal dilators is then monitored using a health quality / performance monitoring and feedback system. Additionally, the health quality / performance monitoring and feedback system provides feedback on the user's health quality / performance based on the identified set of nasal dilators. This method allows for personalized and targeted improvement of health quality and performance by optimizing the use of nasal dilators.

The visual balloon type urethral dilation device comprises a urethral endoscope and a balloon dilator arranged in the urethral endoscope in a penetrating mode, and the urethral endoscope and the balloon dilator are matched with the urethra of the human body. The observation field of view of the urethra endoscope covers the dilation balloon of the balloon dilator, and visual dilation of the dilation balloon is achieved. The balloon dilator is provided with an independently-controlled fixing balloon, the fixing balloon and a balloon-shaped cavity in the urethra endoscope probe form a detachable fixing structure, the balloon dilator can penetrate through a middle shaft of the probe to move axially when fixing is removed, and the guiding function of the probe is achieved. The balloon dilator can be used in a disposable mode, and cross infection is prevented. And the probe is provided with a panoramic camera and a light supplementing lamp which are symmetrical, so that the visualization precision is improved. The urethra dilatation operation accuracy, safety and diagnosis and treatment efficiency are greatly improved from the aspects of high visualization, dilatation precision adjustment and the like.

Provided are methods and devices for facilitating the advancement of a catheter device, such as an intracardiac ultrasound examination catheter, through a body wall, such as the septum of the heart. The catheter device is advanced through a subject's vasculature to a first body cavity. The catheter device is coupled to a guidewire previously placed within the vasculature between the first and second cavities. The catheter device is then advanced from the first body cavity to the second body cavity through a body wall separating the first and second cavities. To facilitate this advancement, the catheter device can be magnetically coupled to the guidewire. The magnetic assembly can be provided on a distal portion of a sleeve through which the distal portion of the catheter is advanced. A malleable dilator element can also be provided on the distal portion of the sleeve.

A sheath for producing a fully sealed access to the interior of a vessel of an animal or human body comprises a base sheath having a tubular body defining a pass-through channel. The base sheath is adapted to be inserted into the vessel through a vessel aperture. A wall of the tubular body of the base sheath has a through channel. This channel extends in the wall from the distal end towards the proximal end. The channel can be present separately from the pass-through channel of the base sheath or can form a sideways extension of the pass-through channel, at least at the distal end. Such through channel is adapted to conduct blood from the vessel to the proximal end of the sheath when the sheath has been inserted into a vessel.

A catheter having a proximal opening, a distal opening, a lumen extending through the catheter and a side opening forming a rapid exchange port dimensioned and configured for insertion of a guiding device through the side opening. The catheter includes a seal movable between a closed position to reduce leakage through the side opening and an open position, wherein the seal is movable to an open position by the guiding device. The catheter can have one or more independently deflectable zones.

The invention relates to the technical field of medical instruments, and provides a medical urinary surgery dilation drainage device which comprises a dredging rod, a balloon mechanism and a clamping mechanism, the end, away from an air bag, of a ureter is detachably connected with a main body of a Y-shaped handle, and the dredging rod is made of soft elastic materials and is arranged in a three-section mode; the balloon mechanism is used for expanding in the urethra to extrude the urethra, the end, fixedly connected with the dredging rod, of the balloon mechanism extends out of the end, away from the Y-shaped handle, of the ureter, the balloon mechanism and the dredging rod extend out of the Y-shaped handle at the two branches of the Y-shaped handle correspondingly, and when the dredging rod and the balloon mechanism slide relatively, the balloon mechanism can expand to expand the urethra. The ureter can be pushed to move by pushing the Y-shaped handle, the dredging rod and the balloon mechanism can be pulled out of the ureter, and by means of the technical scheme, the problem that in the prior art, when urinary tract drainage is conducted, the urethra can be damaged many times in the urinary tract expansion process is solved.

A method and apparatus for treatment of heart failure by increasing secretion of endogenous naturetic hormones ANP and BNP such as by stimulation of the heart atria. Heart pacing is done at an atrial contraction rate that is increased and can be higher than the ventricular contraction rate. Pacing may include mechanical distension of the right atrial appendage. An implantable device is used to periodically cyclically stretch the walls of the appendage with an implanted balloon.

The invention relates to the technical field of urinary surgery, in particular to a balloon expansion device for urinary surgery endoscopic surgery, which comprises an air bag, a catheter and an adjusting mechanism, the catheter horizontally penetrates through the air bag and is communicated with the adjusting mechanism. The interior of the air bag is divided into a plurality of independent inner cavities through the first diaphragm, the second diaphragm and the third diaphragm, and independent expansion control over all areas is achieved by matching with the filling pipes and the adjusting mechanisms which are in one-to-one correspondence; an operator can accurately adjust the filling degree of different inner cavities according to the anatomical structure difference of the surgical site, excessive expansion of a non-target area is avoided, the accuracy of surgical operation is remarkably improved, and the device is particularly suitable for fine treatment of local tissue in a complex urinary surgery endoscopic surgery.

Systems and methods for mitigating backflow in subcutaneous infusion devices are disclosed. A medical device can include base having a surface configured to be placed against a patient's skin and a subcutaneous assembly coupled to the base and configured to be inserted through the patient's skin when the surface of the base is placed against the patient's skin. The subcutaneous assembly includes an infusion cannula defining a lumen extending therethrough and configured to infuse fluid therethrough, and a sensor configured to sense a biological analyte. An expandable member (e.g., a swellable material) is coupled to a radially outer surface of the subcutaneous assembly. The expandable member is configured to expand in a radially outward direction when in the presence of bodily fluid, thereby at least partially blocking a flow path from the distal end portion of the infusion cannula to the sensor.

A method for enhancing health quality and performance is disclosed. The method involves providing multiple sets of nasal dilators, each set having a distinct configuration. The dilator set being used is then identified. The health quality / performance of the user using the identified set of nasal dilators is then monitored using a health quality / performance monitoring and feedback system. Additionally, the health quality / performance monitoring and feedback system provides feedback on the user's health quality / performance based on the identified set of nasal dilators. This method allows for personalized and targeted improvement of health quality and performance by optimizing the use of nasal dilators.

A hemostasis valve may be used with a catheter such as an aspiration catheter. The hemostasis valve comprises a support, and at least a first lever, pivotably carried with respect to the support. A collapsible tubular sidewall defining a valve lumen is carried by the support. A filament is formed into a loop around the tubular sidewall, the filament having at least a first tail portion extending away from the loop to the first lever. A first spring may be configured to move the first lever in a direction that pulls the first tail portion away from the tubular sidewall, reducing the diameter of the valve lumen in response to reducing the diameter of the loop. A second tail portion may extend away from the loop to a second lever. Each tail portion may be attached to its respective lever, or may be slidably advanceable around a fulcrum on the lever and attached with respect to the support.

The embodiment of the invention provides an expansion catheter device. The dilation catheter device comprises a catheter body assembly and a balloon body assembly. The pipe body assembly comprises a first pipe body and a second pipe body which extend in the same axial direction and can move relative to the axial direction. The second pipe body penetrates through the first pipe body. The balloon body assembly comprises an expansion balloon body and an interception balloon body which are arranged at the far end of the second tube body at an interval; the expansion bag body and the interception bag body are arranged in an expandable or contractible mode. Wherein the expansion bag body and the interception bag body are used for inputting filler to expand when the bag body assembly is exposed out of the first tube body along with relative axial movement, and a thrombus interception space is defined by the expansion bag body and the interception bag body and the blood vessel wall, so that at least part of thrombus extruded by the expansion bag body enters the thrombus interception space; and the first tube body enters the thrombus interception space to perform thrombus suction action. The expanded intercepting capsule body can intercept part of thrombus which falls off due to extrusion, and the thrombus is prevented from flowing to the far end of a blood vessel and causing embolism; and the first tube body can also suck the intercepted part of thrombus out of the body.

The present disclosure relates to tissue cutting tools that can be used for forming an opening in a target tissue, such as a host leaflet within which a guest prosthetic valve can be expanded. In an example, the tissue cutting tool comprises an actuation tube and a blade support tube extending therethrough. A distal portion of the blade support tube can be coupled to a distal portion of the actuation tube, and a proximal portion of the blade support tube can be axially movable with respect to a proximal portion of the actuation tube. The blade support tube also includes a bendable section extending between its distal and proximal portions, and configured to transition between unbent and bent configuration thereof. At least one blade is coupled to at least one arm of the bendable section.

Provided are a valve and a medical device provided with the same. The hemostasis valve is a valve that is embedded into the valve container in the sheath hub (valve housing) of the sheath. Through the hemostasis valve, a tubular introduction member such as a dilator or a catheter is inserted. The hemostasis valve includes a first partition wall in a proximal side, a second partition wall in a distal side that is provided adjacently to the first partition wall, and a lubricant storage that is provided between the first partition wall and the second partition wall, the lubricant storage having capability of storing lubricant. The lubricant storage consists of a flat cylindrical concave formed on the inner (inside) face of the first partition wall in the central axial direction.

The invention provides an esophageal stenosis dilatation balloon which comprises a dilatation tube mechanism, and a guide-in assembly and a suction tube are arranged in the dilatation tube mechanism; the balloon main body is arranged on the outer surface wall of the expansion tube mechanism, the balloon main body is communicated with the guide-in assembly, a contrast agent can be injected through the injection device to expand the balloon main body, the expansion diameter is matched with the injection pressure, repeated suction can be carried out to gradually expand the balloon main body to a target diameter, and marking lines visible under X rays are arranged at the two ends of the balloon main body. The invention relates to the technical field of medical instruments, in particular to a balloon which is convenient for real-time observation of dilatation during operation and capable of accurately controlling the dilatation diameter of a balloon main body by injecting a contrast agent and utilizing the matching relation between the contrast agent and pressure, avoiding blind operation and improving safety. Suction and injection can be repeatedly carried out, and progressive and controllable expansion is achieved.

A delivery device for positioning an implantable expander to a target location in a prostatic urethra. An implantable biocompatible expander suitable for implantation into a urinary duct is resiliently deformable from a relaxed radially expanded orientation to a radially contracted orientation suitable for transluminal delivery through the urinary duct. The expander may be configured to exert an outward radial force against a wall of the urinary duct when in-situ within the urinary duct. In particular, the expander is suitable for treatment of benign prostatic hyperplasia and configured for implantation into the prostatic urethra between, and substantially spanning the prostatic urethra between, the bladder neck and external sphincter.

A method of delivering a therapeutic agent to a nucleus pulposus of an intervertebral disc is provided. The method comprises inserting a delivery tool containing the therapeutic agent through an anterior portion, a lateral portion, or an anterolateral portion of an annulus fibrosus and into the nucleus pulposus of the intervertebral disc; and delivering the therapeutic agent to the nucleus pulposus of the intervertebral disc. Devices and kits are also provided.

Disclosed herein are vascular access systems with dilator locking mechanisms, and associated devices and methods. In some embodiments, the dilator locking mechanisms include a first cap coupled to a dilator component and a second cap coupled to the vascular access system. The first cap can include one or more locking members. The second cap can include one or more locking features, each configured to be releasably coupled to one of the locking members. In operation, the dilator component can be inserted into the vascular access system, and at least a portion of one or more of the locking members can be aligned with and inserted into the corresponding locking feature to, e.g., couple the first cap and the second cap. The interaction between first and second caps when coupled can at least partially prevent the dilator from moving relative to the vascular access system.

A method of providing embolic protection for carotid stent implantation includes advancing an arterial sheath into an arterial system of a patient and advancing a venous sheath into a venous system of the patient. A fluid connection may be established between the venous sheath and the arterial sheath to enable retrograde flow of blood through the arterial sheath. The artery sheath may be advanced through the vasculature into the patient's carotid artery and the inflatable balloon may be inflated within the patient's carotid artery to block smooth blood flow therein. An interventional tool may be advanced through the interior lumen of the arterial sheath, the interventional tool sized such that a portion of the cross-sectional area of the interior lumen of the arterial sheath remains open for retrograde flow of blood.

An example assembly for use with a vacuum system and an esophageal positioning device esophageal positioning device includes an introducer, in which the esophageal positioning device includes a first segment and a second segment. The second segment is pivotally connected to the first segment. A gap portion of an outer tube of the introducer is defined along a longitudinal axis between a tube tip of the introducer and the distal end of the second segment of the esophageal positioning device when the esophageal positioning device is disposed within the introducer. The gap portion defines one or more radial vacuum holes.

The utility model provides a phimosis dilator which comprises a base, an operating part, a plurality of elastic dilating arms and a limiting assembly, the operating part is movably arranged on the first side of the base, and the elastic dilating arms are arranged on the base and stretch out towards the second side opposite to the base; the elastic expansion arms are configured to rotate relative to the base so as to be switched between an opening state and a closing state, the limiting assembly comprises a first limiting part and a second limiting part, the first limiting part is arranged on the base, and the second limiting part is arranged on the elastic expansion arms or the operation piece; the first limiting part and the second limiting part are matched with each other to restrain the plurality of elastic expansion arms to be in a closed state; and when the operating piece is operated, the first limiting part and the second limiting part are released from cooperation, and the multiple elastic expansion arms enter the opening state from the closing state. The stability of the closed state can be kept, the closed state can be conveniently switched to the open state, use is convenient, and the use safety and the treatment effect are improved.

The utility model discloses a kind of paraffin oil smearing devices, it relates to medical appliance field.The paraffin oil smearing device includes bottle body and brush head detachably arranged on the bottle mouth of bottle body, its distinguishing feature is also including extrusion device, the extrusion device includes installation cylinder, motor, screw rod, piston, battery and jog button, the bottom of installation cylinder is detachably connected with bottle body;The motor and battery are all arranged in the inside of installation cylinder;The bottom of bottle body is provided with through hole communicating inside and outside, the output shaft of motor passes through through hole and is towards the inside of bottle body, one end of screw rod is connected with motor output shaft, the other end of screw rod extends to the bottle mouth of bottle body, the piston is arranged in the inside of bottle body, and the middle region of upper surface is communicated with lower surface and is provided with screw hole matched with screw rod, piston can be moved in bottle body under the driving of screw rod.The paraffin oil smearing device can make paraffin oil directly smearing on using appliance, effectively improve smearing efficiency.

The utility model relates to a measuring and treating device for the dilatation of a cyclopharynx muscle, which effectively solves the problems that the amount of filled gas is inconvenient to control and the pressure of the cyclopharynx muscle on a balloon is inconvenient to detect when the balloon of the cyclopharynx muscle is dilated. Comprising a vertical inflator pump with a downward opening, a piston plate capable of moving up and down is arranged in the inflator pump, a vertical axial connecting block is fixed to the upper end of the inflator pump, a connecting groove is formed in the middle of the connecting block, through holes are formed in the upper side and the lower side of the connecting block respectively, and the opposite sides of the two through holes are communicated with the connecting groove respectively; the lower end of the through hole in the lower side is communicated with the inside of the inflator pump, the upper end of the through hole in the upper side is detachably connected with an intubation tube, an inflatable airbag is arranged at the upper end of the intubation tube, arc-shaped elastic sheets capable of shielding the through hole in the lower side are fixed to the left side and the right side of the connecting groove respectively, the opposite sides of the two elastic sheets protrude upwards and make contact with each other, and the right end of the inflator pump is communicated with an arc-shaped connecting tube. The device is simple in structure, convenient to operate, novel in conception and high in practicability.

The utility model discloses a ring pharynx muscle balloon dilatation stimulation training tube which comprises a catheter body, three conveying tube cavities and three air bag bodies are arranged on the catheter body, the conveying tube cavities comprise the first conveying tube cavity, the second conveying tube cavity and the third conveying tube cavity, and the air bag bodies comprise the fixed air bag body, the dilatation air bag body and the annular air bag body. The fixed air bag body is located in front of the expansion air bag body, the annular air bag body is arranged on the surface of the expansion air bag body in a matched and surrounding mode, the far end of the first conveying pipe cavity is communicated with the fixed air bag body, and the near end is connected with an inflation and deflation connector. According to the utility model, not only can the air bag body be used for accurately carrying out expansion training on the cyclopharynx muscle, but also cold water flow can be injected through the annular air bag body to carry out cold stimulation training on the cyclopharynx muscle, so that the stimulation training effect of the treatment tube is improved, and the stimulation expansion training of a patient is facilitated.