1342 results about "Dilator" patented technology

A microcatheter with a guidewire therein can be steered to target tissue, then the target tissue can be punctured with the guidewire to create a transseptal puncture. The microcatheter can have a diameter substantially smaller than known sheaths which are typically used to guide a needle to a target puncture site in known transseptal puncture treatments. The guidewire can have an atraumatic, electrically conductive distal end that can be electrically energized to puncture the target tissue. Once the guide wire is across, ancillary devices such as a dilator and sheath can be delivered over the guide wire across the transseptal puncture. The microcatheter can include one or more location sensors. A navigation module can use the electrically conductive distal end as a reference electrode to the location sensor(s) of the microcatheter.

Systems and methods can remove material of interest, including blood clots, from a body region, including but not limited to the circulatory system for the treatment of pulmonary embolism (PE), deep vein thrombosis (DVT), cerebrovascular embolism, and other vascular occlusions. The capture system can include a tubular body comprising a first end, a second end, and an axial length therebetween, the first end having an opening and a capture guide. The capture system can include one or more tensioners coupled to the capture guide. The tubular body has a first configuration in which the first end and the capture guide are expanded while the second end and a majority of the tubular body remains compressed. The tubular body is transformable to a second configuration by application of tension by the tensioners. The catheter can remove a large volume of clot. In some embodiments, the body of the catheter or the funnel tip is expandable. The catheter can include a dilator and a peel-away cover.

Various implementations include an inflatable sheath (8) for delivering a medical device, the sheath includes a fluid chamber (for example, a fluid-bearing chamber) (356) that when inflated expands the sheath from an unexpanded configuration in which the central lumen has a first diameter to an expanded configuration in which the central lumen has a second, larger, diameter.

The invention provides a negative pressure suction sheath which comprises a sheath tube, a negative pressure connector and a dilator, 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 dilator 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.

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.

Trocar components and methods of use are described, wherein the trocar components are configured to provide access to intraperitoneal space via the rectouterine pouch to surgical tools, which optionally include one or more surgical robot members. The surgical tools are optionally 5 mm or more in diameter. In some embodiments, a cannula part has a lumen sized to provide to a plurality of the surgical tools simultaneous transvaginal access to the intraperitoneal space via the rectouterine pouch. In some embodiments, an incision sized to receive a distal aperture of the cannula is created, optionally using one or two dilators. The dilators are sized to create (optionally starting from a puncture by a needle 2 mm in diameter or less) an oblong aperture. In some embodiments, the oblong aperture is at least twice as wide across a long diameter as across a short diameter.An access port for sealing an opening of a natural orifice and supplying access to a body cavity through the natural orifice including: a sealing unit; an unobstructed single lumen cannula extending to the body cavity; a connector connecting the cannula to the sealing unit; an access opening through the sealing unit to the single lumen; a cap including a plurality of cap openings configured to seal between medical instruments inserted into the openings and the access opening.

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 field of medical instruments, in particular to a multifunctional vagina operation dilator. Comprising an upper opening and closing structure, a lower opening and closing structure, an upper expansion part and a lower expansion part, the lower expansion part is provided with a bearing cavity, and the lower expansion part further comprises a grabbing part; an auxiliary device is arranged in the grabbing part, and the bearing cavity communicates with the auxiliary device through the continuous channel. The dilator is used for solving the problems that a dilator is single in function and cannot be matched with other functions, and an existing dilator is poor in use feeling. The dilator is kept sanitary before entering a vagina operation; cut objects or sampled objects in the operation process are received, and the operation efficiency is improved; the dilator is flexibly adapted to vaginas of different patients, so that the lower dilating part is adjusted as the optimal operation position, and the use feeling of the dilator is improved; by means of the auxiliary device, labor-saving fixing of the grabbing part is achieved, and the dilator can be matched with multiple functions under the condition that the installation space of tools does not need to be additionally increased.

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 invention relates to a dilator and a vascular sheath, which can solve the pain points such as blood leakage of a puncture point and occurrence of pseudoaneurysm clinically. The dilator comprises a head, a driving mechanism, a suturing mechanism, an electromagnetic mechanism and a sleeve. The driving mechanism comprises an operating part, a connecting rod and an opening-closing assembly, the near end of the connecting rod is connected with the operating part, the far end of the connecting rod is connected with the opening-closing assembly, and when the operating part moves relative to the head, the opening-closing assembly is unfolded or folded; the suturing mechanism is arranged on the opening and closing assembly and comprises a plurality of needle grooves and suturing needles; the sleeve comprises an outer tube and a catheter, the connecting rod is sleeved with the outer tube, the near end of the outer tube is connected with the head, the catheter penetrates through the connecting rod, and the near end of the catheter is connected with the head; the electromagnetic mechanism is arranged on the head part and comprises an electromagnetic control circuit with a control switch and an electromagnetic chuck, and the electromagnetic control circuit is used for enabling the electromagnetic chuck to generate magnetism; when the opening and closing assembly is in an unfolded state, an opening of the needle groove faces the electromagnetic chuck, and the suture needle is located at the position where the suture needle can be attracted by the electromagnetic chuck.

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.

An implantable device for sealing an aperture in a tissue of a body vessel includes an external fixation (990, 1706) disposed on the outside of a vessel wall, and a scaffold (20) arranged to be disposed on the inside of the vessel wall and interfacing with the external fixation. At least a portion of the scaffold is disposed in use through an aperture in the vessel wall; and a patch (1100) is disposed on the inside of the vessel wall and sandwiched between the external fixation and the scaffold. The patch substantially covers the full area of the aperture, thereby sealing the aperture. A system for delivering an implantable device includes: a delivery device to deliver the implantable device to the aperture location and to seal the implantable device over the aperture; a sheath and dilator assembly; and a packaging assembly.

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 invention discloses a manufacturing method of a fixed expansion appliance, which comprises the following steps of: performing three-dimensional scanning on an oral cavity to obtain an oral cavity digital model; selecting a real spiral expander with a proper specification according to the oral cavity digital model, and constructing a digital spiral expander which is the same as the real spiral expander in three-dimensional (3D) software; the digital spiral dilator and the oral cavity digital model are combined in three-dimensional software, so that the digital spiral dilator is located at a proper position; designing a digital model of the expansion bracket, and obtaining an entity of the expansion bracket through 3D printing; and welding the arch expansion bracket entity and the real spiral expander into a whole, and then removing the temporary connecting rod on the arch expansion bracket entity to obtain a fixed arch expansion appliance entity. According to the manufacturing method of the fixed expansion appliance, the manufacturing difficulty of the fixed expansion appliance can be reduced, and the manufacturing efficiency and the product quality can be improved.

A joint stabilization method is disclosed. The method includes placing an elongated blunt-tipped pin within a joint of a human, the blunt-tipped pin including a cannulated interior, placing at least one of contrast and medicine within the cannulated interior of the elongated blunt-tipped pin, placing a dilator having a substantially hollow interior over the elongated blunt-tipped pin, while the elongated blunt-tipped pin remains inserted within the joint, placing a drill guide over the dilator and the elongated blunt-tipped pin, the drill guide having a substantially hollow interior section, removing the dilator and the elongated blunt-tipped pin, leaving the drill guide, drilling through the interior of the drill guide to provide a pathway for an implant, and placing the implant within the pathway, the implant to reside within the joint.

Devices, systems, and methods for a robot-assisted surgery. Navigable instrumentation, which are capable of being navigated by a surgeon using the surgical robot system, and navigation software allow for the navigated placement of interbody fusion devices or other surgical devices. The interbody implant navigation may involve navigation of access instruments (e.g., dilators, retractors, ports), disc preparation instruments, trials, and inserters.

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 utility model provides a blood vessel puncture sheath. The blood vessel puncture sheath comprises an outer sheath tube, a hemostasis valve, a three-way valve, a connecting tube, a thread hanging device and a dilator. The hemostasis valve is fixedly connected with the near end of the outer sheath tube; the dilator penetrates through the hemostasis valve and enters the outer sheath tube; the three-way valve is communicated with the hemostasis valve through a connecting pipe; the outer sheath tube is sleeved with the suture hanging device, the suture hanging device is close to the far end of the outer sheath tube, the far end of the outer sheath tube penetrates through the suture hanging device to be exposed, and a suture hanging hole and / or a suture hanging groove used for fixing a suture line are / is formed in the suture hanging device. The situation that the outer sheath tube is inserted too deep and makes contact with the opposite side blood vessel wall, and blood vessel injuries are caused is avoided. And the condition that the whole blood vessel puncture sheath is pushed out by blood pressure due to high blood pressure of the main artery is prevented. The situation that the whole blood vessel puncture sheath falls off due to the fact that the whole blood vessel puncture sheath is touched carelessly is avoided. In addition, the utility model further provides a blood vessel sheath set.

Intravascularly delivered blood pumps and associated devices, systems, and methods, are disclosed herein. A method of intravascularly delivering a blood pump in accordance with embodiments of the present technology can include, for example, advancing an elongated delivery dilator through a patient's vasculature such that a first portion of the elongated delivery dilator is externally accessible proximate to the subclavian artery and a second portion of the elongated delivery dilator is externally accessible proximate to the femoral artery. The method can further include attaching the second portion of the elongated delivery dilator to a driveline, which is coupled to a balloon at the opposite end, and then pulling on the first portion of the elongated delivery dilator to move the driveline and the balloon through the patient's vasculature to a target site with the balloon positioned within the aorta.

The invention discloses a surgical incision dilator. The surgical incision dilator comprises a dilating part, a positioning strip and a dilating mechanism, the two groups of expansion pieces are horizontally arranged, the two ends of the two groups of expansion pieces are hinged to the same hinge piece respectively, and the two groups of expansion pieces can deform outwards in the middle positions of the expansion pieces under the action of external force; the positioning strip is arranged between the two hinging pieces, the two ends of the positioning strip are detachably connected relative to the hinging pieces, and the length of the expansion piece can be kept unchanged in the longitudinal position of the surgical incision in the deformation process of the expansion piece; the expansion mechanism is arranged on the positioning strip and used for applying external force capable of enabling the expansion piece to deform to the expansion piece, so that the expansion piece expands the surgical incision in the transverse position of the surgical incision; according to the surgical incision expander provided by the invention, the area of a part in contact with a surgical incision is increased, so that the expanded range of the surgical incision is expanded; after the surgical incision is expanded and fixed, the expansion mechanism can be detached to provide the maximum surgical space.

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.

A thrombectomy device including a delivery catheter; a tapered dilator catheter configured to be movably disposed within the delivery catheter; and an expandable aspiration funnel configured to be movably disposed within the delivery catheter in a retracted position and at least partially outside the delivery catheter in an extended position, the funnel comprising a non-permeable covering, a diameter of a distal end of the funnel being greater in the extended position than in the retracted position, the funnel being configured to adapt its shape and length to a surrounding blood vessel such that the funnel lengthens as it narrows to retain a thrombus within the funnel. The invention also includes methods of using the device.