552 results about "Dilator" patented technology

The utility model provides a guiding device and dilator for improving pressure measurement accuracy, the guiding device comprises a pressure measurement sheath, the pressure measurement sheath comprises a handle and a sheath tube, the size and shape of the sheath tube are suitable for entering a target area in a body through a body lumen, the sheath tube longitudinally extends from a near end to a far end, the sheath tube defines a first lumen suitable for entering of an external instrument, and the first lumen is communicated with the handle. A pressure measuring tube cavity longitudinally extending from the near end to the far end is formed in the tube wall of the sheath tube, a pressure measuring opening used for sensing the pressure of liquid in the body is formed in the far side of the pressure measuring tube cavity, and the dilator is arranged in the first tube cavity in a supporting and penetrating mode so that the pressure measuring sheath can enter the body conveniently. And the dilator is provided with a blocking part for limiting foreign matters from entering the pressure measuring tube cavity through the pressure measuring port.

The invention relates to the technical field of intelligent urethral surgical instruments, and particularly discloses a urethral dilation path planning system integrating visual SLAM and force perception, which synchronously acquires image data of the internal environment of the urethra and contact force data between the instrument and tissues through an image sensor and a force sensing unit integrated at the front end of the dilation instrument; constructing a three-dimensional environment model in the urethra by utilizing a visual SLAM technology, and positioning the position of an instrument in real time; the force data and the three-dimensional model are fused to generate a dynamic force distribution diagram, and a safe expansion path is planned based on the distribution diagram and the current position of the instrument; dynamically adjusting the advancing direction and the expansion force of the instrument through a closed-loop control system to enable the instrument to move along a planned path; meanwhile, path deviation and force abnormity are detected in real time through a monitoring mechanism, and model updating and path re-planning are triggered.

The negative pressure suction sheath comprises a sheath tube, a negative pressure connector and an expander, the negative pressure connector comprises a main channel cavity and a negative pressure suction channel cavity located on one side of the main channel cavity, the near end of the sheath tube is connected with the far end of the main channel cavity, and the expander is inserted from the near end of the main channel cavity and extends out of the far end of the sheath tube. The main channel cavity is detachably connected with the main channel cavity; a side channel opening is formed in one side of the main channel cavity, and the negative pressure suction channel cavity communicates with the side channel opening. The cavity wall of the main channel cavity is further provided with a pressure adjusting opening, the pressure adjusting opening corresponds to the side channel opening or is located at the end, away from the sheathing canal, of the side channel opening, the negative pressure in the sheathing canal can be adjusted by adjusting the opening size of the pressure adjusting opening, and therefore an operator does not need to leave to adjust the negative pressure device to adjust the suction force in the sheathing canal. The negative pressure in the sheathing canal can be adjusted only by adjusting the size of the pressure adjusting opening in the handheld negative pressure connector.

The present order refers to a Pelvic Physiotherapy Multipurpose Thermal Accessory. The present invention combines typical functions of a vaginal dilator (when used vaginally) or butt plug with functions of a thermal bag (cold or hot). The effectiveness of the treatment is optimized, as the treatment is much faster compared to products without thermal effect. In addition, the use of this invention combined with heat and cold, as it is the shortest treatment time, encourages the patient to continue with the treatment, significantly avoiding treatment evasion (withdrawal). “MULTIPURPOSE THERMAL ACCESSORY OF PELVIC PHYSIOTHERAPY” (100), characterized by containing flexible body (01), tip (02), limiter (03) of the body (01), cap (04) of the body (01), cavity (05) inside the body (01), material to be inserted (15) in the cavity (05) with thermal properties.

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 invention discloses an eye examination device with a postoperative care eyelid supporting function, and belongs to the technical field of eye examination.The eye examination device comprises an eyeshade type frame, a tightening belt, a shell, an examination base, an examination module, an eyelid dilator and the like, stable wearing can be achieved through the tightening belt, the position of the examination module is adjusted through a micro electric push rod, and the eyelid dilator is arranged on the shell; an upper eyelid supporting piece and a lower eyelid supporting piece of the eyelid dilator achieve accurate dilation by means of the SMA driving dilator, a contact air bag on an arc-shaped silica gel supporting pad can adjust contact pressure through a pneumatic adjuster, a piezoelectric ceramic vibrator can assist in tear adjustment and muscle relieving, a liquid absorber can treat redundant tears, and the device integrates a control module and various detection modules and is convenient to use. The eye protection device can monitor the eye state in real time and trigger a protection mechanism, provides safe and comfortable support and nursing for postoperative patients while completing eye examination, and is suitable for ophthalmologic postoperative examination and rehabilitation assistance.

Various implementations include a breast tissue expander device. The device includes one or more tabs extending outwardly from a body of the device for coupling the device to the chest wall of a patient. The device further includes an aspiration port in fluid communication with a drain tube for draining body fluid, along with retention members for securing the drain tube to the body. The device may also include one or more flow barriers configured to prevent the inadvertent leakage of expansion fluid or body fluid from the device.

An inflatable speculum device for more comfortably and conveniently expanding the vaginal cavity to facilitate visualization of the cervix includes a tube having an interior space. The tube is made of a resiliently deformable material wherein the tube is configured to inflate. A hose is couplable to the tube and is in environmental communication with the interior space of the tube. A pump is fluidly coupled to the hose wherein activation of the pump moves air into the interior space of the tube through the hose thereby inflating the tube. The tube fits within a body cavity of a user whereby the tube is configured to dilate the body cavity when the tube inflates.

The invention belongs to the technical field of veterinary mouth opening instruments, and relates to a livestock oral cavity dilator for animal husbandry and veterinary, which comprises a fixing frame, an upper clamping plate, a lower clamping plate, a mouth opener, a self-locking hand-cranking winch and a steel wire rope, the upper clamping plate and the lower clamping plate are provided with a rotatable upper restraining frame and a rotatable lower restraining frame respectively, and the middle section of the upper restraining frame and the middle section of the lower restraining frame are connected through two elastic telescopic pieces which are arranged in a left-right spaced mode. The mouth opener is composed of a metal ring, a U-shaped lower rod, a U-shaped upper rod and a handle. The two self-locking hand cranking winches are installed on the upper clamping plate and the lower clamping plate respectively, and steel wire ropes are connected between the two self-locking hand cranking winches and the U-shaped lower rod and between the two self-locking hand cranking winches and the U-shaped upper rod respectively. According to the oral cavity opener, livestock can be fixed through the fixing frame, the upper clamping plate, the lower clamping plate, the upper restraining frame and the lower restraining frame, so that the influence of the resisting behavior of the livestock on oral cavity opening is reduced, and after the mouth opener opens the oral cavity of the livestock, traction and fixing can be conducted through the two steel wire ropes which are vertically opposite, so that a veterinarian can release hands.

The utility model discloses an auxiliary expander for preventing nasal cavity cicatricial contracture, including deformation metal frame structure, two nasal cavity expansion structures are arranged in deformation metal frame structure both sides, the nasal cavity expansion structure includes the plate type silica gel sleeve part, and the top and bottom of plate type silica gel sleeve part fixedly links two arc deformation silica gel parts, the utility model nasal cavity expansion structure whole is silica gel material, has elasticity, two arc deformation silica gel parts will apply the elastic force to the outside, and the patient's nostril is expanded, when being inserted into the nostril, two arc deformation silica gel parts are pinched, can be inserted into the nostril, after entering the nostril, two arc deformation silica gel parts expand and the patient's nostril are pasted, can be suitable for the nostril of different size and use, more convenient, the utility model deformation metal frame structure each position can be bent, like this can realize the adjustment of two nasal cavity expansion structure spacing, is suitable for different nostril spacing.

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.

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.

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.

The invention belongs to the technical field of surgical instruments, and particularly relates to an incision retraction dilator for small incision deep tissue, which comprises a fixing mechanism, a fixing mechanism, a fixing mechanism and a traction mechanism, the expansion ring is arranged on the inner wall of the mounting block; the retraction mechanism is arranged at the top of the mounting block; the blood cleaning mechanism is mounted on the outer wall of the expansion ring, and the extension rod is arranged on the opposite side of the expansion ring; according to the retractor, the retractor mechanism is arranged, the end of the expansion assembly makes contact with an incision of a patient, the width of the expansion assembly is determined according to the size of the incision of the patient, the retractor is suitable for various different types of operations, the size of the position making contact with the incision is flexibly controlled according to the length of the incision, and the operation is more convenient. Compared with manual operation, expansion can be maintained more conveniently and stably through a mechanical means, and the requirement for the number of medical workers is reduced.

A negative pressure suction sheath includes a sheath, a negative pressure joint, and a dilator; the negative pressure joint includes a main channel cavity and a negative pressure suction channel cavity located at one side of the main channel cavity, a proximal end of the sheath is connected to a distal end of the main channel cavity, the dilator is inserted from a proximal end of the main channel cavity and extends out of a distal end of the sheath, and is detachably connected to the main channel cavity; the main channel cavity is provided with a side channel port, the negative pressure suction channel cavity is communicated with the side channel port; a cavity wall of the main channel cavity is provided with a pressure regulating port. Therefore, an operator only needs to adjust the size of the pressure regulating port to adjust the negative pressure.

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 special abdominal cavity dilator for animals, which relates to the field of abdominal cavity dilators and comprises a first dilating frame, a second dilating frame, a first clamping plate and a second clamping plate, the first clamping plate and the second clamping plate are used for positioning and mounting the first dilating frame and the second dilating frame, and the first dilating frame and the second dilating frame are in circular connection. By loosening the two connecting blocks, the two connecting columns are driven to reset and inserted into the corresponding mounting blocks under the automatic reset action of the corresponding telescopic rods and telescopic springs, and an operator holds the upper ends of the first distraction frame and the second distraction frame with hands, so that the upper ends of the first distraction frame and the second distraction frame are opened. According to the device, the first distraction frame and the second distraction frame are arranged, so that the bending parts at the lower ends of the first distraction frame and the second distraction frame can be distraction, the abdominal cavity of an animal can be distraction, and the abdominal cavity distraction device can be specially used for the abdominal cavity of the animal, so that the use effect of distraction of the abdominal cavity of the animal can be improved, and internal organs can be better exposed; therefore, accurate operation can be carried out.

The utility model provides a ureter sheath convenient for adjusting rotation of a pipeline. The ureter sheath comprises a Y-shaped main body, a guide sheath tube, a guide sheath seat, an expander seat and an expander tube body, the dilator tube body is connected with the dilator seat, and the dilator seat is embedded into the Y-shaped main body; the guide sheath tube and the guide sheath seat are integrally formed, the Y-shaped main body is provided with a sealing gasket, and the guide sheath seat is clamped with the Y-shaped main body through the sealing gasket; and when the Y-shaped main body is rotated, the Y-shaped main body drives the guide sheath seat to rotate at the same time through the sealing gasket. By arranging the sealing gasket, the guiding sheath tube can be driven to rotate by rotating the Y-shaped main body, so that the guiding sheath base is moved or operation gestures are replaced, and the problems of twisting, winding and the like of a negative pressure drainage bottle connecting tube do not need to be considered.

The invention relates to the technical field of medical treatment, in particular to an adjustable vaginal dilator which comprises a lower duckbill, an upper duckbill and a fixing ring, a grip is fixedly mounted at the bottom end of the fixing ring, distraction mechanisms are arranged between the lower duckbill and the grip and between the upper duckbill and the grip, and adsorption cleaning mechanisms are arranged on the lower duckbill and the upper duckbill. A fixing mechanism is arranged on the grip, silica gel pads are fixedly arranged on the outer walls of the heads of the lower duckbill and the upper duckbill in a sleeving mode, and latex sleeves are movably arranged on the outer portions of the lower duckbill and the upper duckbill in a sleeving mode. The suction holes in the upper duckbill and the lower duckbill adsorb secretions in the vagina of a patient at the same time, the secretions are sucked into the piston cavity, the interior of the vagina of the patient is cleaned, subsequent normal examination and treatment work of a doctor is guaranteed, the doctor does not need to clean the vagina subsequently, and the examination and treatment efficiency is greatly improved.

The invention relates to a delivery sheath assembly and a thrombectomy system.The delivery sheath assembly comprises a dilator and a delivery sheath, the dilator comprises a far-end tip section, a pushing section and a deformation section, the far end of the pushing section is connected with the near end of the far-end tip section, and the radial size of the near end of the far-end tip section is larger than that of the far end of the pushing section; the deformation section is connected with the near end of the far-end tip section, the deformation section axially extends from one end connected with the far-end tip section to the near end and sleeves the far end of the pushing section to form a gap, and one end, far away from the far-end tip section, of the deformation section is a free end pointing to the near end; in the natural state, the maximum outer diameter of the deformation section or the maximum diameter of the circumcircle of the deformation section is smaller than the inner diameter of the conveying sheathing canal, the conveying sheathing canal is movably arranged on the pushing section in a sleeving mode, the far end of the conveying sheathing canal can stretch into the gap, and after the conveying sheathing canal is withdrawn from the gap, the deformation section recovers to the natural state. The conveying sheathing canal assembly is not prone to damaging the blood vessel wall.

The utility model relates to the technical field of dilators, in particular to a dilator for preventing deformation of an adhesive tape mother roll. According to the technical scheme, the device comprises a round rod, a fixing cylinder is arranged on the round rod, an expansion assembly is arranged on the fixing cylinder, the expansion assembly comprises a plurality of expansion plates which are annularly and evenly distributed, the device further comprises a threaded rod installed in the round rod in a threaded mode, and a rotating plate is fixedly installed at the bottom of the threaded rod; the round rod is further provided with a limiting assembly used for limiting rotation of the rotating plate. The opening degree of the expansion plate is controlled by rotating the rotating plate, so that the expansion area of the expansion plate is controlled, expansion recovery processing can be conveniently carried out on adhesive tape mother paper winding shafts with different deformation degrees, meanwhile, the limiting assembly can limit the rotating plate through the control rod, the spring and the limiting block, the structure is simple, and operation is convenient.

This application relates to the field of medical device technology, and in particular to a minimally invasive dilation and drainage kit, comprising a sheath body and a dilator. The dilator is fixedly and detachably assembled to the end of the sheath body. An annular groove is provided on the outer peripheral wall of the end of the sheath body near the dilator. A hemostatic ring assembly and a cooling ring assembly are disposed within the annular groove. Both the hemostatic ring assembly and the cooling ring assembly are connected to the control part of a minimally invasive surgical device via wires. The wires are either attached to the outer peripheral wall of the sheath body or pre-embedded inside the sheath body. When energized, the hemostatic ring assembly heats up to warm the bleeding point on the blood vessel wall and promote scab formation. When energized, the cooling ring assembly cools down to cool the bleeding point on the blood vessel wall. This minimally invasive dilation and drainage kit not only conceals the hemostatic ring assembly and the cooling ring assembly within the annular groove, but also integrates the sheath with dual functions of hemostasis and cooling, greatly reducing the frequency of using coagulation forceps and alleviating patient suffering.

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 head structure of a spreader. The head structure comprises a center rod, a rear blade, a front blade, an outer pipe, a handle, a rotating wheel, a fixing pin and a pin shaft. The rotating wheel is arranged at the tail end of the handle; the handle is fixedly provided with an outer tube; the center rod sequentially penetrates through the outer pipe and an inner cavity of the handle to be connected with the rotating wheel, and the rotating wheel is rotated to drive the center rod to stretch out and draw back. A pair of front blades is mounted at the front end of the center rod through a pin shaft; the front end of the outer pipe is connected with a pair of rear blades through a fixing pin; and the rear blade is connected with the front blade through a pin shaft. The center rod is controlled to stretch out and draw back through rotation of the rotating wheel, the rear blade and the front blade are driven to be opened and closed, all parts are connected through the pin shafts, and the strength of the instrument and the operation stability are improved.

The invention relates to an intubation bougie (10) comprising a body (11) and a distal portion (12) formed by at least three elastomer segments (121, 122, 123) with increasing flexibility from one end of said distal portion (12), which is integral with the body (11), to a free end of said distal portion (12) intended to enter the upper airways of a patient. These segments are preferably articulated to one another. A sheath (200) surrounding the segments (121, 122, 123) and a ball end (210) advantageously complement said distal portion (12). The invention also relates to a method for producing such an intubation bougie (10).

The utility model discloses a kind of spinal tumor puncture devices, belong to medical instrument technical field, the spinal tumor puncture device includes dilator, ring saw, divider and first push rod, wherein: ring saw includes ring saw main body and the first handle located above ring saw main body, first passageway is equipped on ring saw vertically through, the lower end of ring saw main body is equipped with sawtooth;Divider includes the divider main body that can be inserted into first passageway and the second handle located above divider main body, second passageway is equipped on divider vertically through, the lower side of divider main body is equipped with slot, the lower side of divider main body is equipped with the first blade edge of vertically extending in the side edge of slot close to;First push rod includes the first push rod main body that can be inserted into second passageway and the third handle located above first push rod main body.The utility model is convenient for sampling to hardened bone and non-hardened bone, sampling is sufficient, and it is easy to puncture, amount of bleeding is less, and tissue damage is small.