82 results about "Dilator" patented technology

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.

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 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.

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.

An expandable dilator used with an expandable sheath includes a tapered distal tip, a body, a proximal end, and a shaft having a lumen extending longitudinally from the distal tip to the proximal end. The expandable dilator includes an expansion mechanism extending radially outward from the outer surface of the shaft. When the expandable dilator is pulled back proximal to the expandable sheath, the expansion mechanism engages with the distal end of the sheath and expands the sheath as the expansion mechanism moves proximal through the sheath.

A dilator includes a distal end side coil part, and a proximal end side coil part located at a proximal end side of the distal end side coil part and having a distal end portion connected to a proximal end portion of the distal end side coil part. The distal end side coil part includes a first coil having a wire wound in a first winding direction, and a second coil provided on an outer periphery of the first coil and having a wire wound in a second winding direction that is opposite to the first winding direction. The proximal end side coil part includes a third coil having a wire wound in the second winding direction, and a fourth coil provided on an outer periphery of the third coil and having a wire wound in the first winding direction.

The utility model provides a kind of anti-falling rotary cutting device, belong to medical appliance technical field, comprising: rotary cutting catheter, rotary cutting part, dilator, balloon, tool rest, multiple rotary cutting knives.Rotary cutting catheter's outer surface is provided with rotary cutting mouth;Rotary cutting part is arranged on the surface of rotary cutting mouth;The inside of rotary cutting catheter is provided with cavity, and dilator is detachably installed in cavity;Balloon is arranged in the side of rotary cutting catheter away from rotary cutting mouth;Tool rest is installed in rotary cutting part;Multiple rotary cutting knives are distributed on tool rest.It is used for the rotary cutting of intravascular plaque, enlarges lumen area, and is convenient for balloon expansion in later period.

The application provides an atrial septum puncture needle sheath system, and relates to the technical field of medical devices, to solve the problem that the existing technology lacks feedback to the operator when puncturing through the foramen ovale. The atrial septum puncture needle sheath system comprises an expander outer tube, a handle shell, an inner needle assembly, and a pushing mechanism and a pull rod installed in the handle shell. The expander outer tube is connected to the front end of the handle shell. The rear end of the inner needle assembly is arranged in the handle shell, and the front end of the inner needle assembly extends into the expander outer tube. The rear end of the inner needle assembly is movably connected to the front end of the pull rod through a first elastic member. When the front end of the inner needle assembly pierces the puncture site, the first elastic member pushes the inner needle assembly to move relative to the pull rod towards the front end of the pull rod and triggers a feedback mechanism. The atrial septum puncture needle sheath system can trigger the feedback mechanism when the puncture site is pierced, so that the operator can perceive that the inner needle assembly has pierced the puncture site, and further advancement is avoided, thereby improving the safety of operation.

This application relates to a stepless positioning vaginal speculum, comprising: a handle and a slider. The end of the handle has an upper leaf and a lower leaf hinged together. An opening / closing lever is rotatably mounted on one side of the handle, fixed to the lower leaf, and the handle is fixed to the upper leaf. The lower leaf has a slide rail. The slider slides on the slide rail and is connected to the opening / closing lever via a connecting rod. When the opening / closing lever is pressed, the upper and lower leaves change from a closed state to an open state. When the opening / closing lever is released, the slider is magnetically fixed to the slide rail, locking the upper and lower leaves at a set opening degree. By setting a slide rail on the lower leaf and sliding the slider on the slide rail, with the slider connected to the opening / closing lever via a connecting rod, and by magnetically positioning the slider on the slide rail when the opening / closing lever is released, locking the upper and lower leaves at a set opening degree, precise adjustment of the opening degree of the upper and lower leaves is achieved, preventing accidental slippage. This solves the technical problem of traditional vaginal speculum in related technologies, which cannot be finely adjusted and have the risk of accidental slippage.

The utility model discloses an easy to operate's catheter sheath belongs to medical technical field, including catheter sheath subassembly and dilator still includes locking assembly and cutting adjustment subassembly, the dilator is used in cooperation and is inserted with catheter sheath subassembly, and the locking between catheter sheath subassembly and dilator is locked with locking assembly, and locking assembly is connected with catheter sheath subassembly, the cutting adjustment subassembly includes cutting assembly and adjustment assembly, through above -mentioned mode, the utility model has realized the tearing of catheter sheath subassembly conveniently.

The utility model relates to medical instrument technical field, specifically disclose a foreskin dilator, the tubular body front end is inserted in the rear end of balloon, the front end of bucket -shaped casing is inserted with the rear end of tubular body, the rear end of bucket -shaped casing inner chamber is matched with the sleeve joint of plug body, the centre of plug body is equipped with the inflation hole, the plug head is matched with the sleeve joint of inflation hole, and Robert clamp is used for controlling the on-off of tubular body, and the outer wall between the rear end of bucket -shaped casing and the outer wall of plug body front end is connected with flexible connecting band no.

A surgical instrument includes an expander, a cutter, a retractable brush, and at least one retractable drill. The expander is configured to expand a patient's tissue and is capable of being positioned in either an unexpanded or expanded configuration. The cutter is configured to cut the tissue and is located at the distal end of the expander. The cutter is configured to move between a cutting position when the expander is in the unexpanded configuration and a non-cutting position when the expander is in the expanded configuration. The retractable brush is configured to brush the surface of an anatomical element of the patient to remove material from the surface. The at least one retractable drill is configured to drill into the anatomical element.

An instrument for use in spine surgery, and related systems and methods are disclosed. The instrument features a probe extending between a proximal end and a distal end. The probe includes a sensing tip at the distal end having a first diameter, the sensing tip including a first conducting area. An embed area is disposed adjacent to the sensing tip having a second diameter that is larger than the first diameter so that the probe may be supported in a free standing position. The probe further includes a depth stop defined by a third diameter that is larger than the second diameter. There is an initial dilator integrally formed with the probe including a sensing region having a second conducting area. The proximal end includes a third conducting area and a fourth conducting area that are in electrical communication with the first conducting area and second conducting area, respectively.

The utility model discloses a kind of incision dilators of self-adaptive incision shape, it is related to incision dilator technical field, including support plate, the bottom four corners of support plate are fixedly provided with support rod, the top of support plate is provided with connecting port, the top of connecting port is provided with expansion mechanism, the bottom of expansion mechanism is provided with two adjusting mechanism, the adjusting mechanism includes connecting plate, the side of connecting plate is rotatably connected with worm, the side of connecting plate is fixedly connected with two connecting frames, the inner wall of two connecting frames is rotatably connected with connecting shaft, the outer wall of connecting shaft is fixedly provided with worm wheel, the worm wheel is engaged with the worm, the same adjusting frame is fixedly connected with the top and bottom of the circumferential outer wall of connecting shaft, one end of adjusting frame is fixedly provided with connecting rod, the bottom of connecting rod is provided with expansion plate. The utility model is convenient for the expansion of different size incision.

This invention discloses an insulated atrial septum puncture guidewire, comprising a core wire, which includes a middle section, a tip, and a tail. The advantages are as follows: When the guidewire of this invention passes through the atrial septum, compared to traditional mechanical puncture with a needle, the mechanical force required for puncture is much lower. The J-shaped coil at the tip of the guidewire is softer and less sharp, significantly reducing the risk of cardiac perforation and making the procedure safer. Simultaneously, after the guidewire passes through the atrial septum, the sheath and dilator can pass through the septum along with the guidewire. Using the guidewire for atrial septum puncture, compared to the existing technology using mechanical puncture needles, eliminates the need to remove the guidewire from the sheath and insert a needle during the puncture process. The guidewire can simultaneously serve as a guide and puncture point, greatly reducing the number of puncture steps in the atrial septum, lowering the possibility of cardiac damage during atrial septum puncture, and thus reducing the risk of surgical complications.

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

The application discloses a combined medical sleeve system and a use method thereof, and technical scheme points of the application are as follows: the sleeve system comprises a sleeve assembly, the sleeve assembly is composed of two sleeve pieces which can be combined into a complete sleeve; a fixing assembly; a dilator which is detachably connected on the two sleeve pieces to perform a dilating operation on the two sleeve pieces when the fixing assembly is separated from the sleeve assembly; and a maintainer; the use method comprises the following steps: S01, installing the dilator; S02, removing the lock; S03, dilating the sleeve piece; S04, installing the maintainer; and S05, removing the dilator; in the process of the operation, the working channel can be expanded according to requirements through the two sleeve pieces and the dilator, and the sleeve does not need to be replaced; through the setting of the maintainer, the two dilated sleeve pieces can be supported, so that the problems of retraction and displacement are avoided.

The application discloses a dilator, which comprises a circular ring for supporting a vagina and a first connecting piece, a plurality of the circular rings can move on the first connecting piece to change the interval, the circular ring is provided with an adjusting assembly capable of adjusting the radial size of the circular ring, a plurality of groups of the adjusting assemblies are connected through a second connecting piece, and the first connecting piece and the second connecting piece are connected with a group of operating mechanisms; the application sets a plurality of coaxial circular rings which are connected with each other to support the vagina of a patient, the outer diameter of the plurality of circular rings can be freely adjusted, the plurality of circular rings can be uniformly supported in a circumferential shape, the field of view of the vagina wall after being supported is better, meanwhile, the first connecting piece and the second connecting piece are located at the edge of the circular ring, so that the middle space surrounded by the circular ring is not affected, and the field of view is better. The axial distance of the plurality of circular rings can also be adjusted, the inspection requirement of medical staff and the comfort requirement of the patient are considered, the structure is cleverly arranged, and the dilator has high practicability.

The utility model relates to medical consumable technical field especially one -off use's lateral wall multidirectional catheter sheath, including catheter sheath body, the main valve body and dilator are installed on the catheter sheath body, the inside of main valve body is linked together with the inside of catheter sheath body, the inside of main valve body has the funnel -shaped inside material cover of integrated structure, is equipped with lateral storage groove on main valve body outside surface. One -off use's lateral wall multidirectional catheter sheath of the utility model through setting up lateral storage groove outside check valve, the turnover closing cover plate of built -in drainage tube is movably assembled in the inside of lateral storage groove, and the opening and closing control can be carried out through the inside and outside turnover of turnover closing cover plate, the inside of main valve body has the funnel -shaped inside material cover of integrated structure, and the gap between funnel -shaped inside material cover and main valve body is used to receive drainage tube, and the lateral space is reasonably utilized, and the layout is more reasonable, and the size is more compact.

An apparatus includes a body and a shaft assembly extending distally from the body. The shaft assembly includes a malleable distal portion and an enlarged tip positioned at a distal end of the malleable distal portion. The shaft assembly further includes a position sensor positioned within the enlarged tip. The position sensor is configured to generate a signal indicating a position of the enlarged tip in three-dimensional space. The shaft assembly further includes an illuminating element positioned within the enlarged tip. The illuminating element is configured to emit light. The shaft assembly further includes an inflatable balloon positioned proximal to the enlarged tip. The inflatable balloon is configured to dilate a passageway in an ear, nose, or throat of a patient.

This utility model discloses a ureteral guiding sheath, including an outer tube seat and a dilator seat. An outer sheath tube is connected to the outer tube seat, and a dilator tube is connected to the dilator seat. The dilator tube and the outer sheath tube are fitted together. The sheath also includes a rotating cap with an dilator opening. An elastic buckle is provided on the dilator seat, engaging with the dilator opening. A tightening port is provided on the outer tube seat, and a tightening buckle is provided on the rotating cap, engaging with the tightening port. This ureteral guiding sheath has the following advantages: during insertion or surgery, it prevents saline solution from flowing directly out of the main lumen of the ureteral guiding sheath, thus avoiding interference with the surgeon's operation.

The medical system includes a sheath having a long body. The long body includes a proximal portion and a distal portion. One or more sheath electrodes are located on the distal portion. A handle is attached to the proximal portion. The handle includes one or more first couplers that can be electrically coupled to a control system. The medical system includes a dilator having a long body having a proximal portion and a distal portion. One or more dilator electrodes are located on the distal portion. A hub is attached to the proximal portion of the dilator. The hub includes one or more second couplers electrically coupled to one or more dilator electrodes. One or more first couplers are configured to electrically couple with one or more second couplers.

This invention relates to the field of medical device technology and discloses a device for preventing a puncture guidewire from accidentally entering a dilator. The device includes: a dilator with a groove at its end; a resistance triggering unit disposed within the groove; a guidewire capable of passing through the dilator and contacting the resistance triggering unit, the guidewire's surface having a positively charged coating on at least a portion within the dilator; the resistance triggering unit includes: a negatively charged substrate, a hydrophobic film wrapped around the substrate surface, and a trigger layer wrapped around the outer surface of the hydrophobic film, the trigger layer having directional cracks on its surface; the trigger layer has an intact state and a torn state. When the guidewire moves in the forward direction, the trigger layer is intact; when the guidewire moves in the retraction direction, the trigger layer and the hydrophobic film tear, exposing the negatively charged substrate. The substrate and the guidewire coating generate electrostatic adsorption, creating resistance to the guidewire's movement. This provides accurate warning without interfering with normal operation, ensuring safety and ease of use.

An apparatus includes a handle assembly, a guide tube, and a dilation catheter. The guide tube extends distally from the handle assembly. At least a distal portion of the guide tube is malleable. The dilation catheter is slidably positioned in the guide tube. The dilation catheter includes a distal end, a dilator, and a position sensor. The position sensor is configured to generate a signal indicating a position of the position sensor in three-dimensional space. The dilation catheter is configured to translate relative to the guide tube.

To provide a pediatric surgical anal dilator that combines operational safety, user comfort, and clinical practicality. [Solution] The device has a fixed ring 1, a handheld frame 12 is fixedly connected to the outer wall of the fixed ring, multiple connection grooves are provided at the lower end of the fixed ring, a hinged connecting plate 3 is connected by a hinge in the connection groove, an expansion plate 11 is fixedly connected to the lower end of the hinged connecting plate, female screw threads are provided on the inner wall of the fixed ring, an expansion mechanism is provided above the fixed ring, and safety protection mechanisms are provided on the outside of the multiple expansion plates. Through the combination of the fixed ring, hinged expansion plate and screw-type adjustable expansion tube, stable and controllable circumferential expansion is achieved, the expansion force is made uniform and operation is made easy, and by combining a position limiting ring, anti-detachment ring, end protection shield and safety protection strip made of transparent silicone material, the gaps between the expansion plates are filled, and as a result, when the multiple expansion plates are narrowed and the device is removed, it is not possible to pinch flesh or damage mucous membranes. The entire device is made of transparent material and has an auxiliary observation hole, ensuring softness and comfort and conforming to the physiological structure of children, as well as providing a good field of view for examination.

The utility model belongs to the field of medical apparatus and instruments, disclose a tracheal catheter strutting device, including the pipe column of two end openings, the outside diameter of pipe column is less than the inside diameter of catheter, any one end of pipe column is equipped with the connecting strip, the side fixed with the sliding rod of connecting strip away from pipe column, sliding rod and pipe column are coaxial line placement, the fixed coaxial line placement's conical block of sliding rod away from the end of connecting strip, the diameter of conical block is gradually reduced from the end close to sliding rod to the end away from sliding rod, the disc of sliding connection is equipped with on sliding rod, is provided with the strutting mechanism between disc and conical block, when disc moves to conical block, the distance between strutting mechanism and pipe column central axis gradually increases, the diameter of conical block and disc is all less than the outside diameter of pipe column, first through conical block extrusion bite and pinch part, make bite and pinch part preliminary strutting, further strutting bite and pinch part through strutting mechanism, can realize the quick strutting of bite and pinch part, and the application can be applicable to the effective strutting of bite and pinch part of the catheter of many different inside diameters.

The utility model relates to the technical field of veterinary instruments, disclose a kind of cattle oral cavity dilator, including occlusal plate, the bottom of occlusal plate is rotatably connected with two upper rotary rods, the other end of two upper rotary rods is rotatably connected with adjusting block, the bottom of two adjusting blocks is rotatably connected with lower rotary rod, the other end of two lower rotary rods is rotatably connected with another upper rotary rod, the inner wall of occlusal plate is slidably connected with two sliding rods, the bottom of two sliding rods is fixedly connected with fixed block, the outer wall of occlusal plate is equipped with the fixed component for dilator fixed on the head of cow, the fixed component includes adjusting band, the one end of adjusting band is fixedly connected with connecting band.The utility model makes the two occlusal plates of upper and lower open, so as to make occlusal plate open the mouth of cow, to realize the oral cavity of cow open, to realize the adjustment of the oral cavity of cow open.