792results 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 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 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.

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.

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.

Described herein are devices and related methods for occluding at least a portion of a body lumen during a surgical procedure. In some embodiments, the device includes an inner shaft defining a lumen therethrough and a first aperture, and an outer shaft including a flexible member and defining a lumen therethrough and a second aperture positioned on the outer shaft proximally relative to the flexible member. The inner shaft extends through the lumen of the outer shaft such that at least a portion of the outer shaft is axially translatable toward and away from a distal portion of the inner shaft. The flexible member is movable between an unexpanded configuration and an expanded configuration when at least a portion of the outer shaft is axially translated toward or away from the distal portion of the inner shaft. In some embodiments, the devices and methods are used for endoscopic surgical procedures.

The present application relates to the technical field of vaginal irrigation flow rate control, and particularly relates to a control method for vaginal irrigation dilation based on multi-modal data. The method acquires pelvic floor muscle electrical signals, pH values and irrigation flow rate data of a patient during a vaginal irrigation dilation process; acquires an electromyographic influence degree of the patient according to pelvic floor muscle electrical signals and irrigation flow rate data of a matching historical patient in an irrigation dilation stage; acquires a pH influence degree of the patient according to differences between the pH value of the patient at each time and a normal pH value range of the vagina, and changes in the pH value within a preset field time period at each time; and acquires a flow rate adjustment weight of the patient in real time according to the electromyographic influence degree and the pH influence degree, and controls an irrigation flow rate of the patient during the vaginal irrigation dilation process. The present application accurately acquires the flow rate adjustment weight in real time, accurately adjusts the irrigation flow rate, and effectively avoids damage to the vagina during the irrigation dilation process.

An introducer assembly includes a valve having a first end and an opposite second end; a sheath fixedly secured to and extending axially from one of the first and second ends of the valve; a dilator extending through the valve and sheath; and a lock knob rotatable between locked and unlocked positions to releasably axially lock the tool relative to the sheath without causing corresponding rotation of the tool therewith.

A device for inserting a catheter according to a disclosed embodiment comprises: a needle including a needle body extending in a first direction, a tip forming a distal end in the first direction, and a pair of edge portions which meet each other at an acute angle at the tip, have widths increasing in both directions perpendicular to the first direction toward a second direction opposite to the first direction, and form sharp edges so that the skin of a patient can be incised in the both directions; and a sheath having a guide hole extending in the first direction therein so that a catheter can be inserted, wherein the needle body is disposed through the guide hole so that the tip and the edge portions of the needle are positioned in the first direction of the guide hole, and the outer diameter of the distal end in the first direction is greater than the maximum width of the pair of edge portions in both directions.

The sheath assembly includes a first sheath, a second sheath, and an attachment mechanism. The first sheath includes an inner surface defining a first sheath lumen extending along a central longitudinal axis of the first sheath between a first end portion of the first sheath and a second end portion of the first sheath. The second sheath includes an inner surface defining a second sheath lumen extending along a central longitudinal axis of the second sheath between a first end portion of the second sheath and a second end portion of the second sheath. The attachment mechanism couples the second sheath to the first sheath. The attachment mechanism includes a step-up extension of the attachment mechanism. At least a portion of the attachment mechanism is asymmetric about the central longitudinal axis of the first sheath at the step-up extension of the attachment mechanism.

The invention relates to a bed for gynaecology and obstetrics, in particular to an intelligent midwifery bed for gynaecology and obstetrics, which comprises a bed frame, a mattress arranged on the bed frame and a backrest movably connected with one end of the mattress, leg frames are arranged on two sides of the mattress, two guide rails are arranged on the bed frame and positioned on the lower side of the mattress, a midwifery device is arranged on the two guide rails, and the two guide rails are connected with the backrest. When the two legs of the puerpera are placed on the leg frame, the delivery aiding device is driven to move to the other end of the mattress along the two guide rails and is placed on the vulva of the puerpera, and then the delivery aiding device is controlled to conduct vaginal dilation on the puerpera. The leg frames are arranged on the two sides of the mattress, so that a puerpera can conveniently place two feet and pedal the feet to exert force, and smooth production is facilitated; the vaginal dilator is further provided with a delivery aiding device, the delivery aiding device can conduct vaginal dilation automatically, manual operation of medical staff is not needed, the structure is simple, labor can be saved, and production is further facilitated.

The invention provides a guiding sheath and a dilator guiding sheath assembly, and belongs to the technical field of guiding sheaths, and the guiding sheath comprises a sheath seat which is provided with a first channel; the suction tube connector is provided with a first rotating part and a second channel, the suction tube connector is rotatably connected with the sheath base through the first rotating part, and when the suction tube connector rotates relative to the sheath base, the second channel is communicated with the first channel all the time. The disposable aspirator has the advantages that the aspiration tube connector is rotationally connected to the sheath base through the first rotating part, so that in the clinical use process, a doctor can freely rotate the aspiration tube connector and adjust the direction of an external pipeline according to the operation angle, the pipeline is prevented from being wound or pulled, meanwhile, the second channel is communicated with the first channel all the time, and the aspiration tube connector is convenient to use. The suction channel is ensured to be unblocked continuously in the rotating process, negative pressure is not interrupted, and the stability and reliability of the suction function are guaranteed.

A medical device for use in catheter application has a longitudinal axis and a capillary portion that is elongate coaxially to the longitudinal axis between a proximal capillary end and a distal capillary end. The capillary portion has a flexurally resilient design and a capillary outside diameter. A dilator portion, which is elongate coaxially to the longitudinal axis between a proximal dilator end and a distal dilator end axially adjoining the proximal capillary end, has a dimensionally stable design and a dilator outside diameter that is larger than the capillary outside diameter at least in sections. A lumen, which is elongate coaxially to the longitudinal axis continuously between the proximal dilator end and the distal capillary end through the dilator portion and the capillary portion, is configured for receiving a cannula.

The utility model discloses a variable-diameter expansion puncture cannula device, which belongs to the technical field of medical equipment and comprises an air closed valve cover, an expansion variable-diameter main body, an inner fixing support, a variable-diameter support and a variable-diameter rubber sleeve. The inner fixing support and the bottom wall of the expansion variable-diameter body sequentially penetrate to form a through hole, and a plurality of grooves are formed in the bottom wall of the inner fixing support in the circumferential direction. The variable-diameter support is defined by a plurality of variable-diameter pieces, and each variable-diameter piece comprises a fixing part and an expanding part. And after one end of the reducing rubber sleeve is fixed in the expansion reducing main body, the other end of the reducing rubber sleeve extends out of the expansion reducing main body from the through hole and covers the peripheries of the expansion parts. The expansion part of the puncture cannula device is composed of a plurality of variable-diameter pieces and a variable-diameter rubber sleeve wrapping the variable-diameter support. Due to the fact that the variable-diameter support and the variable-diameter rubber sleeve are arranged in a split mode, the puncture cannula can play a rigid role of the variable-diameter support and a flexible role of the variable-diameter rubber sleeve at the same time, and the application range of the puncture cannula device is enlarged.

The stoma enema suite device comprises a fixing assembly, a pipe assembly, an enema assembly and an antifouling assembly, and the pipe assembly comprises a first pipeline for enema and a second pipeline communicated with the fixing assembly; the first pipeline is used for introducing enema liquid into the intestinal tract from the container through the stoma; the second pipeline is used for introducing gas or liquid into the fixing assembly, so that the fixing assembly is tightly combined with the stoma; the fixing assembly comprises at least two balloons, a conical fixing piece and a spiral supporting piece. A balloon is arranged on the conical tip side of the conical fixing piece; the other balloon and the spiral supporting piece are both arranged in the inner cavity of the conical fixing piece, and the balloon is located on the inner side of the cavity space formed by the spiral supporting piece. According to the stoma enema suite device, the risk of leakage due to the folded state of the stoma can be avoided, the contact area between the stoma and the stoma is increased, and the purpose of preventing enema liquid from overflowing is achieved.

The invention relates to the technical field of medical instruments, and discloses a visual biliary tract rotary cutting biopsy expansion system assembly which comprises a conical sleeve, a visual mechanism is fixedly connected to the interior of the conical sleeve, a holding mechanism is installed on the left side of the visual mechanism, a rotary cutting mechanism is installed at the left end of the holding mechanism, and the visual mechanism comprises a cable. The exterior of the cable is fixedly connected to the interior of the conical sleeve, the top end of the cable is fixedly connected with a golden finger, the left end of the conical sleeve is fixedly connected with a protection assembly, the left end of the protection assembly is fixedly connected with a Luer lock cap, and the interior of the protection assembly is fixedly connected with an insertion pipe; a light source is fixedly connected into the protection assembly. The inside of the biliary tract is uniformly and sufficiently illuminated through the light source, a clear observation view is provided for a doctor, the doctor can accurately judge the illness state, and the situation that the positive rate of hepatopathic bile duct malignant stenosis biopsy is not high is reduced.

The utility model relates to the technical field of flushing needle tubes, in particular to an expansion flushing needle tube which comprises a discharging port, a plurality of fixing rods are fixedly installed on the inner wall of the discharging port, a plurality of limiting shafts are fixedly arranged on the fixing rods, first transmission rods are rotationally connected to the limiting shafts, and the other ends of the first transmission rods are rotationally connected with fixing blocks through the limiting shafts. A containing groove used in cooperation with the first transmission rod is formed in the fixed block, the middle of the fixed block is fixedly sleeved with a movable rod, a second transmission rod is rotationally connected to the portion, away from the outlet of the discharging port, of the fixed block on the movable rod, and the other end of the second transmission rod is rotationally connected with the fixed rod through a limiting shaft. Compared with the prior art, the problem that the size of an outlet of a traditional injector is fixed and cannot be flexibly adjusted is solved.

A medical device includes a sheath assembly (1000), a catheter assembly (2000) and an expandable assembly (3000). The catheter assembly (2000) is partially disposed inside the sheath assembly (1000) and includes a first tubular body (2100) axially movable relative to the sheath assembly (1000). The expandable assembly (3000) is sleeved over an outer circumferential surface of a distal end of the first tubular body (2100), and the outer surface of the expandable assembly (3000) is configured for loading a drug. The medical device is configured so that axial movement of the first tubular body (2100) relative to the sheath assembly (1000) causes the expandable assembly (3000) to be in a radially collapsed configuration in which it is confined within the sheath assembly (1000), or in a radially expanded configuration in which it is at least partially exposed outside the sheath assembly (1000). When in the radially expanded configuration, the expandable assembly (3000) comprises a first fluid passage (3001) axially extending therethrough. The medical device can treat atherosclerosis, does not block the blood flow, can prolong the treatment time, and has a good treatment effect.