867 results about "Dilator" patented technology

An expandable introducer sheath with an interlock dilator. The present technology provides an expandable sheath with a step feature inside its distal opening, and a dilator with an interlock that includes a catch surface configured to engage with the step feature and resist further relative movement so that the body of the dilator is prevented from exiting the distal end of the expandable sheath. This interlocking engagement may allow the dilator to be used to extend and maintain tension on the expandable sheath during insertion into a patient, and then to be retracted from the expandable sheath by pulling the dilator in the opposite direction. The present technology also provides a dilator hub with a spring mechanism configured to achieve and maintain a desired tension on the expandable sheath and to prevent overextension of the expandable sheath when the dilator is being inserted into the expandable sheath.

The invention relates to an atrial septum puncture system, and belongs to the technical field of medical instruments. The atrial septum puncture system comprises a conveying sheath assembly, a dilator assembly and a puncture guide wire. The dilator assembly comprises a dilator, a puncture needle and a control handle. The conveying sheath assembly, the dilator assembly and the puncture guide wire are combined into the atrial septum puncture system, puncture operation is more convenient and safer, and the puncture guide wire and a puncture needle do not need to be frequently exchanged in the puncture operation process; according to the dilator assembly, the control handle comprises the moving part and the limiting part, the moving part is fixedly connected with the near end of the puncture needle, the moving part is used for driving the puncture needle to move in the axial direction of the moving part, and a user can control the puncture needle conveniently; the limiting step is arranged on the outer wall of the moving part, and the axial distance between the near end of the limiting part and the limiting step is 0.5-10 mm, so that the distance of a puncture needle extending out of the dilator can be limited, and the safety of puncture operation can be guaranteed.

The invention discloses a variable-caliber catheter-sheath integrated thrombus aspiration catheter with an intra-catheter thrombus breaking function, and relates to the technical field of thrombus treatment medical catheters.The catheter-sheath integrated thrombus aspiration catheter comprises a guiding catheter and an aspiration pipe, the aspiration pipe is inserted into the guiding catheter in a sliding mode, and the catheter-sheath integrated thrombus aspiration catheter further comprises a multi-stage adjustment aspiration opening mechanism, a locking mechanism and a thrombus breaking mechanism; and the suction pipe is used for driving the multi-stage adjustment suction port mechanism to retract into the guide pipe or expand outwards from the guide pipe step by step. The multi-stage suction port adjusting mechanism connected with the end part can be driven by the suction pipe to extend out of the guide pipe, and is expanded step by step to reach the caliber with the corresponding size, and the multi-stage suction port adjusting mechanism is composed of the adjusting and scaling assembly, the supporting section metal wire and the covering film, so that a suction port with a larger caliber is conveniently defined; the thrombus can be conveniently and completely sucked and guided into the suction tube, an expander is not needed, operation of a doctor is reduced, and the situation that large thrombus is broken before being sucked into the tube and escapes to a far-end blood vessel to cause blockage can be avoided.

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 discloses a hemostasis device and a hemostasis method for an anorectal lacuna operation, and belongs to the technical field of medical instruments. The hemostasis device for the anorectal lacuna operation comprises a fixed tube, a movable tube is arranged in the fixed tube, the movable tube is connected with the fixed tube in a rotating and sliding mode, an expansion structure used for expanding anorectum is arranged on the upper portion of the movable tube, and an expander driving the expansion structure to expand or contract is arranged in the movable tube. The anorectum is expanded through the expansion structure, and hemostasis operation can be conveniently conducted on the anorectum; the inner tube and the outer tube are rotationally and slidably connected, so that the adaptability of the hemostasis device is improved; the hemostatic effect is improved through the hemostatic powder and the compression air bag. Therefore, by adopting the hemostasis device and the hemostasis method for the anorectal lacuna operation, the problems that an existing device is poor in adaptability and cannot effectively stop bleeding can be solved.

The invention belongs to the technical field of medical treatment, and discloses a laryngeal membrane implantation system combined with a central vein puncture device, which comprises a self-retaining laryngoscope, a hollow puncture needle, a catheter sleeved on the puncture needle, a skin expander, a metal guide wire, a central vein catheter, a non-absorbable suture and a laryngeal membrane. The puncture needle penetrates into the laryngeal cavity, and the catheter is retained. And guiding by using a metal guide wire, expanding the skin by using a skin expander, and smoothly placing into the central venous catheter. The central venous catheter is pulled out of the self-retaining laryngoscope, and the non-absorbable suture is reversely arranged along the tip of the catheter, so that the suture smoothly penetrates out of the larynx from the inside of the larynx to the outside of the larynx, the laryngeal membrane is firmly fixed on the larynx, and further adhesion of vocal cords is avoided. Components required by the invention are simple and easy to obtain. Compared with a traditional method, the method is simple and easy to operate, saves operation time and is easy to popularize nationwide.

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 discloses a water sac dilator for periosteal distraction, which comprises a dilation mechanism, and a liquid inlet of the dilation mechanism is communicated with a liquid outlet of an injection mechanism through a connecting mechanism. The expansion mechanism comprises a water bag, and developing lines are arranged on the two sides of the water bag; the connecting mechanism comprises a water injection pipe communicated with a liquid inlet of the water bag, and a closable connector is arranged at the end, away from the water bag, of the water injection pipe. A distraction plate is not needed, continuous traction of the periosteum can be achieved only through expansion of the water bag, and the periosteum distraction device has the advantages of being reasonable in structure, convenient to operate, practical and efficient.

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 discloses a cardiac surgery sternum dilator for preventing rib fracture, which comprises a first distraction arm, a guide plate, a second distraction arm, a distraction plate, a pressure gauge, a brake component and a controller, and is characterized in that the first distraction arm is fixed at one end of the guide plate; the second distraction arm is arranged on the guide plate and can move along the guide plate; guide grooves are formed in the opposite sides of the first distraction arm and the second distraction arm, a distraction plate is inserted into each guide groove, and the distraction plates can move in the length direction and the height direction relative to the guide grooves; the first distraction arm and the second distraction arm are each provided with a pressure gauge in a sliding mode, and the detection ends of the pressure gauges can abut against the corresponding distraction plates. And the brake component is arranged on the second distraction arm. Therefore, the sternum distraction pressure can be detected, braking is carried out when the pressure is too large, and therefore the situation of side injury of rib fracture caused by the too large distraction pressure is avoided, and the discomfort of a patient in the postoperative recovery process is reduced.

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.

The invention relates to the technical field of skin dilators, and discloses an external skin dilator which comprises a main body assembly, an external skin dilator body and an external skin dilator body. The adjusting assembly is located on the bonding plate and comprises a fixing piece, the fixing piece comprises a first fixing block, a second fixing block and a third fixing block, and the first fixing block is fixed to the bonding plate. The dilator has the advantages that the dilator integrates the preoperative skin dilation function and the postoperative tension reduction function, the preoperative dilation function can continuously generate outward tension on the skin around a pre-operation, the slack area of the skin around the pre-operation is relatively enlarged, meanwhile, the tension reduction function can be achieved after the operation, the tension of the edge of a wound is reduced, and the wound healing effect is improved. The dilator is simple in structure and convenient to use, wound healing is facilitated, tension can be adjusted, the tension borne by skin is always within a safe and reasonable range, the dilator cannot shield an operation site in an operation, and it is guaranteed that a doctor can clearly observe and operate the operation area.

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.

The invention relates to the technical field of medical instruments, and discloses a portable skin dilator water injection rate intelligent detection device which comprises an outer frame body and a dilation bag, a water storage barrel, a control unit and a second electric telescopic rod are arranged in the outer frame body, a piston is arranged in the water storage barrel, and a water conveying pipe is connected between the water outlet end of the water storage barrel and the dilation bag. The water conveying pipe is composed of a hard pipe part and a soft pipe part, a first flow meter and a first electric control valve are installed on the hard pipe part, and the skin surface sensor set is attached to the surface of the skin to be expanded; the pressure sensor is arranged on the inner wall of the expansion bag; through cooperation of the skin surface sensor group, the pressure sensor and the like, intelligent water injection can be achieved, precise control over the pressure, the water injection amount and the like can be achieved, compared with traditional manual water injection, control over the water injection amount is greatly improved, the workload is reduced, and meanwhile the safety of patient skin water injection is improved.

A negative pressure suction sheath, characterized in that the negative pressure suction sheath comprises a sheath tube, a negative pressure port, and a dilator, wherein the negative pressure port comprises a main channel space and a negative pressure suction channel space located on one side of the main channel space, wherein a proximal end of the sheath tube is connected to a distal end of the main channel space, wherein the dilator is inserted from the proximal end of the main channel space and protrudes from the distal end of the sheath tube and is detachably connected to the main channel space; wherein a side channel opening is provided on one side of the main channel space, wherein the negative pressure suction channel space is connected to the side channel opening;wherein a pressure regulating port is further provided on the wall of the main duct space, wherein the pressure regulating port is provided corresponding to the side duct opening or at an end of the side duct opening facing away from the casing tube, wherein the negative pressure in the casing tube can be adjusted by adjusting the opening size of the pressure regulating port;

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 disposable tearable catheter sheath comprises a sheath tube and an expansion tube penetrating through the interior of the sheath tube, a sheath tube connector is arranged at the insertion rear end of the sheath tube, tearing marks are arranged on the two sides of the surface of the sheath tube in the axis direction, and an expansion tube connector is arranged at the insertion rear end of the expansion tube. And a sealing assembly is arranged between the sheath tube joint and the expansion tube joint. The hemostasis valve is simple in structure and reasonable in design, it is guaranteed that a doctor can tear the sheath conveniently and rapidly, a torn opening is smooth, damage to blood vessels and nerves of a patient is reduced, and the firmness of the hemostasis valve is guaranteed.

The invention discloses a vaginal dilator with a light source, which relates to the technical field of medical instruments and is characterized by comprising a dilation structure, a light source system, an adjusting structure and a handle. The expansion structure is formed by hinging upper and lower tooth parts, and the surface of the expansion structure is coated with a silica gel layer to ensure comfort and biocompatibility; an observation window is arranged at the front end of the upper tooth part; a light guide column is integrated in the lower tooth part. The light source system comprises an LED module and a turning structure, uniform floodlight source distribution and accurate point light source illumination are achieved through microprism texture processing and light guide fibers, and the irradiation angle can be adjusted to meet different inspection requirements. And the adjusting structure comprises a fine adjustment knob and an angle adjusting knob, so that accurate control of the expansion angle and flexible adjustment of the light source angle can be realized. The problems that in the prior art, the light source angle cannot be adjusted, and the dilation angle is not finely adjusted are solved, the examination accuracy and the comfort of a patient are improved, and the device is suitable for gynecological examination and conventional treatment.

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 present invention describes a trocar assembly and a method of use, wherein the trocar assembly is configured to provide access to the intraperitoneal space to a surgical tool through the rectouterine pouch, the surgical tool optionally including one or more surgical robot components. The diameter of the surgical tool is optionally 5 mm or greater. In some embodiments, the cannula portion has an inner cavity that is sized to provide access to the intraperitoneal space via the rectouterine pouch simultaneously through the vagina to multiple surgical tools. In some embodiments, one or two dilators are optionally used to form an incision sized to receive the distal hole of the cannula. The size of the dilator can form (optionally, starting from puncture by a needle having a diameter of 2 mm or less) a rectangular hole. In some embodiments, the width of the rectangular hole on the major axis is at least twice the width on the minor axis.

An implantable biocompatible expander suitable for implantation into a urinary duct, comprises an elongated sinusoidal ring comprising at least two proximal prongs and at least two distal prongs, wherein the expander is resiliently deformable from a relaxed radially expanded orientation to a radially contracted orientation suitable for transluminal delivery through the urinary duct. The expander is 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.

The invention relates to the technical field of surgical equipment, in particular to a disposable medical dilator which comprises a dilator body and a power supply cable, the dilator body is used for hooking a human body part to dilate a surgical operation window so as to completely display a surgical operation part of a human body, and a hooking part for hooking the human body part is arranged at the head end of the dilator body. A flue is arranged in the hooking part, a light-emitting mechanism used for providing illumination is embedded in the expander body, and the tail end of the expander body is detachably installed on a power supply part of a power supply cable. A series of work such as hooking of a human body part, expansion of an operative incision, collection and exhaust of smoke and light source irradiation of the human body operative part can be achieved, operation is convenient and rapid, the operation view of a doctor during an operation can be effectively expanded, and the operation efficiency is improved. Meanwhile, the tail end of the dilator body is detachably installed on the power supply part of the power supply cable, rapid replacement of the dilator body can be achieved, disinfection is convenient, and economic benefits are improved.

Methods and devices therapeutically dilate the pelvic floor of a nulliparous patient and thereby to reduce trauma and injury to patient tissue and to the neonate during labor and delivery. The methods and devices reduce the rate of ani muscle avulsion, reduce the occurrence of Cesarean procedures and reduce brachial plexus injury to the neonate. The methods and devices, in one practice, dispose an intrapartum electromechanical pelvic floor dilator into the vaginal canal and across the pelvic floor of the patient, and therapeutically expand the birth canal to pre-acclimate the tissue of the patient that is involved later stages of labor and delivery and thereby reduce injury.

The present invention relates to a balloon dilator system (1500), comprising: a balloon pump hand piece (1573) configured to pump pressurized fluid through a flexible tube to inflate an inflatable balloon, the balloon pump hand piece (1573) comprising: an attachment mechanism for removably coupling the balloon pump hand piece (1573) to a proximal end of an endoscope; the flexible tube, wherein the flexible tube is configured to be in fluid communication with the balloon pump hand piece (1573) at a first end of the flexible tube, and the inflatable balloon at a second end of the flexible tube; a hollow inner cannula; and the inflatable balloon, wherein the inflatable balloon is external to and circumferentially attached to the hollow inner cannula between the proximal end of the hollow inner cannula and the distal end of the hollow inner cannula.

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.