28 results about "Stone removal" patented technology

The present application relates to the technical field of medical devices, and in particular to a negative‑pressure suction sheath. The negative-pressure suction sheath comprises a sheath tube and a directional expansion structure; the sheath tube is arranged at the distal end of the negative‑pressure suction sheath; the distal end of the sheath tube comprises a passive bending section capable of bending along with an active bending section of an endoscope; the side wall of the passive bending section is provided with a through opening; the through opening extends in the extension direction of the passive bending section; the directional expansion structure is connected to the sheath tube and seals the through opening; when the passive bending section bends and compresses the portion of the directional expansion structure sealing the through opening, the compressed portion of the directional expansion structure bulges toward the outside of the through opening. The present application can solve the problem that, when an insertion portion is used to drive the distal end of the sheath tube to bend so as to suction stones at a lateral side, unsmooth stone removal easily occurs.

The invention discloses a negative pressure suction sheath capable of monitoring high pressure in a renal pelvis, and relates to the technical field of medical instruments, the negative pressure suction sheath comprises a sheath tube body, the end part of the sheath tube body is communicated with a sheath tube joint, and the sheath tube joint comprises a negative pressure joint, an instrument channel, a pressure release valve and a pressure measuring interface; the sheath tube body comprises a pressure measuring channel, a pressure measuring hole and a negative pressure suction channel. Through an independent pressure measuring channel composed of the pressure measuring connector, the pressure measuring channel and the pressure measuring hole, the pressure measuring connector, the pressure measuring channel and the pressure measuring hole are matched with a pressure release valve overflow monitoring mode or an external pressure sensor mode, the pressure change in the renal pelvis is captured in real time, when the pressure is close to or reaches a safety threshold value, medical staff can adjust the perfusion flow and the negative pressure parameter in time, and the operation is convenient. Medical accidents such as renal pelvis tissue swelling and necrosis caused by too high pressure are effectively avoided, so that the pressure in the renal pelvis is maintained within a safe range, the safety of an operation is greatly improved, the stone removing efficiency is improved, and the operation time is shortened.

The invention relates to the technical field of medical instruments, and discloses a common bile duct calculus removing device which comprises a connecting base, a flexible calculus removing catheter and a compliance response balloon which are sequentially connected from right to left, and a microfluid displacement sensing unit and a calculus removing propelling unit are arranged on the outer side of the end, close to the connecting base, of the flexible calculus removing catheter. A plurality of pressure micro-fluctuation acquisition units are distributed on the upper surface of the cavity wall of the compliance response balloon; the flexible calculus removal catheter and the compliance response balloon are fixedly mounted, and a microfluid deformation cavity communicated with the interior of the flexible calculus removal catheter is formed in the compliance response balloon; the microfluid displacement sensing unit is communicated with the microfluid deformation cavity through a microfluid connecting pipe, and the calculus removing propelling unit, the pressure micro-fluctuation collecting unit and the microfluid displacement sensing unit are all electrically connected with a controller. The precision degree in the whole stone removing process is improved.

The invention discloses a disposable ureter lithotripsy and calculus discharging device, and belongs to the technical field of urinary surgery minimally invasive surgical instruments, and the disposable ureter lithotripsy and calculus discharging device comprises a disposable ureteroscope, comprising a head end seat, a camera module assembled on the head end seat, a temperature and pressure sensor assembled on the head end seat, a snake bone connected with the head end seat, and a hose connected with the snake bone, the head end seat is provided with at least two channels; wherein one channel is configured as a water injection channel, and the other channel is configured as a suction intervention channel; the handle assembly is connected with the insertion assembly; according to the disposable ureteral lithotripsy and lithotripsy device, a traditional lithotripsy and lithotripsy operation mode is changed, and the problems that a traditional ureteral lithotripsy and lithotripsy system is complex in operation and large in material consumption, real-time temperature and pressure monitoring cannot be conducted, and the temperature and pressure in the body cannot be adjusted are solved.

This invention discloses a disposable ureteral lithotripsy and stone removal device, belonging to the field of minimally invasive surgical instruments in urology. It includes: a disposable ureteroscope, comprising: an insertion assembly including: a tip, a camera module mounted on the tip, a temperature and pressure sensor mounted on the tip, a snake-like bone connected to the tip, and a flexible tube connected to the snake-like bone; the tip has at least two channels, one configured as a water injection channel and the other as a suction intervention channel; a handle assembly connected to the insertion assembly; and a disposable ureteral lithotripsy and stone removal system connected to the handle assembly. This disposable ureteral lithotripsy and stone removal device changes the traditional surgical method of lithotripsy and stone removal, solving problems such as the complexity of operation, high consumable costs, inability to perform real-time temperature and pressure monitoring, and inability to regulate internal temperature and pressure in traditional ureteroscopic lithotripsy and stone removal systems.

The utility model discloses a coaxial mesh basket negative pressure catheter, which relates to the technical field of stone removal medical instruments and structurally comprises a first tube and a second tube, and the first tube slides relative to the second tube. A net basket is arranged at the tail end of the first pipe; a stone crushing part sliding relative to the first pipe is arranged in the first pipe, an energy release part is arranged at the tail end of the stone crushing part, and the center of the mesh basket and the center of the energy release part are coaxial with the first pipe; the head end of the first pipe is bifurcated and is provided with at least two first interfaces or a connecting piece, and the connecting piece at least comprises three second interfaces; wherein one of the first interface or the second interface is connected with a negative pressure mechanism. According to the coaxial net basket negative pressure catheter, the stone is fixed in the net basket through the binding effect of the net basket, the position between the energy release part and the stone basically does not move relatively during stone crushing, the stone crushing efficiency is higher, and the operation time is shortened; other tissues are not damaged, and higher safety is realized; the lens is protected and is prevented from being damaged by gravel energy; and non-direct-vision touch typing is realized in combination with a contrast agent.

Disclosed is a foreign body removal device, relating to the field of medical instruments. The foreign body removal device comprises a foreign body removal part (100), an adjustment part (200), and an operation part (500). One end of the foreign body removal part (100) is weaved and gathered to form a gathered part (120), the operation part (500) is fixedly connected to the tail end of the gathered part (120), the adjustment part (200) is annularly arranged on the outer side of the gathered part (120), and one end of the adjustment part (200) is fixedly connected to the operation part (500). The overall diameter of the foreign body removal device is extremely small, which is reduced by 50% or more compared with the overall diameter of a traditional stone removal basket product, and the foreign body removal device can be directly fed into a smaller cavity. The positions such as the biliary tract and the intestine can be easily reached, and meanwhile, the effective rotation of the foreign body removal part (100) can be ensured under various bends, thereby greatly expanding the application range of stone removal and foreign body treatment.

This invention provides a novel medical device for performing precise urological procedures, specifically focusing on urological stone removal. The illustrative Stone Removal Robot leverages multiple subsystems to autonomously remove stones while using real-time image guidance for precise targeting and minimal collateral damage. This system is particularly suited for use in urology, though its applications can extend to other surgical fields. The key benefit of this invention lies in its ability to provide enhanced accuracy, reducing the potential for human error, while integrating multiple lithotripsy methods termed herein, Method1, Method2, Method3, which may incorporate cooling to protect surrounding tissues. The system can be adapted for autonomous operation.

The stone removal device of this invention includes a removal mechanism, an outer sheath, a handle grip, and a control mechanism. The removal mechanism includes a removal end and a connecting part; the removal end is located at the distal end of the connecting part, and the proximal end of the connecting part is connected to the control mechanism; the removal mechanism is built into the outer sheath; the handle grip is located at the proximal end of the outer sheath. Before entering the cavity, the removal end is built into the outer sheath; after entering the cavity, the control mechanism controls the removal end to enter and unfold within the cavity via the connecting part, thus removing the attached stone. The removal end is made of medical-grade elastic material, which not only has good strength to ensure the removal effect, but also has deformation capability. When the force is too great, it can undergo moderate elastic deformation, preventing accidental damage to surrounding tissues due to excessive force or sharp edges, making clinical use safer.

The present application relates to the technical field of medical devices, in particular to a dilatable sheath type endoscopic biliary mud-like stone removal device, which comprises an outer sleeve, a flushing unit, a hollow working sheath, a spiral inner core assembly, a rotary drive unit and a vibration generating unit. The flushing unit, flexible conducting rod, spiral blade and vibration generating unit work together to continuously discharge the biliary mud-like stones. The positive pressure of the flushing liquid forms a forward flow in the bile duct, and the axial conveying force of the spiral blade discharges the stones in the outward direction, effectively avoiding the stones being pushed to the distal end of the bile duct, improving the complete removal rate of the stones, overcoming the problems of the existing dredging device, such as easy adsorption to the bile duct wall when using negative pressure suction, causing mucosal vessel rupture, and possibly sucking bacteria from the duodenal papilla into the bile duct, causing infection, and greatly improving safety.

The invention discloses a nipple dilation system. The nipple dilation system comprises a conveying assembly and a dilator. The conveying assembly comprises a first pipe body and a second pipe body which are both of a hollow structure, and the first pipe body is arranged on the outer side of the second pipe body in a sleeving mode. The dilator is configured to be contracted between the first tube body and the second tube body when not in a working state and released by the relative movement of the first tube body and the second tube body when in a working state, and the released dilator expands in the radial direction so as to dilate a narrow duodenal papilla opening to a preset diameter. And a temporary calculus removing channel is established. The dilator only mechanically and temporarily dilates the duodenal sphincter without damaging the duodenal sphincter, and the duodenal sphincter recovers to the initial state after the dilator is taken out. Therefore, when the nipple dilatation system is used for assisting calculus removal operation, the sphincter is only subjected to temporary and recoverable dilatation and cannot be cut, it can be guaranteed that the function of the duodenal sphincter cannot be lost, and noninvasive dilatation is achieved.

A removable cap for an endoscope for use with a surgical laser to improve the stone removal rate (SFR) of lithotripsy procedures. The removable cap includes a filter configured to block or filter light at a wavelength that is an optical wavelength from an aiming beam generated by the surgical laser.

This invention relates to the field of medical device technology, and in particular to an integrated device for lithotripsy and stone removal of kidney stones with adjustable aperture, comprising an integrated tube; the integrated tube further comprises a lithotripsy module and a lithotripsy extraction module, and the other end of the lithotripsy module and the lithotripsy extraction module are connected to a pressure regulating module, which is used to adjust the air pressure in the internal pipes of the lithotripsy module and the lithotripsy extraction module respectively; during the lithotripsy and stone removal process, there is no need to repeatedly change the device, which can reduce damage to the patient and improve the efficiency of lithotripsy and stone removal. A flexible connector is provided between the laser lithotripsy probe and the connecting tube, and a first flexible air tube is arranged on its outer side; by injecting air into the first flexible air tube at different positions through the external pressure regulating module, air pressure difference is formed in each air tube, driving the controllable cover to bend, thereby driving the laser lithotripsy probe to deflect, realizing the adjustable probe angle, which facilitates precise fragmentation of stones at different positions and ensures the quality of lithotripsy.

The utility model provides a transsinus choledochoscope calculus removal isolation drainage device. Comprising an adhesive layer, the adhesive layer is provided with an upper side edge and a lower side edge which are opposite, and the adhesive layer is provided with a notch which is concaved inwards from the upper side edge to the lower side edge. The outlet water receiving device comprises a front surface and two side surfaces positioned on two opposite sides of the front surface, attaching parts are formed on the peripheries of the front surface and the two side surfaces, the outlet water receiving device is attached to the adhesive layer through the attaching parts, the adhesive layer, the front surface and the two side surfaces surround to form a containing space, and the containing space is provided with an upper side edge with an opening facing the adhesive layer; the side face can be divided into two folding faces through a folding line, the two folding faces can be bent along the folding line, flexible fixing pieces are arranged on the two folding faces in an extending mode, the two folding faces are oppositely bent into different angles and fixed through the flexible fixing pieces, and the size of the containing space and the size of the opening of the containing space can be changed. The filter screen detachably covers the opening of the containing space, and the arrangement position of the filter screen is lower than the notch of the pasting layer. And the drainage tube is communicated with the accommodating space of the outlet water container.

The invention discloses a flexible bionic grabbing instrument for ureteroscope calculus removal and an operation method of the flexible bionic grabbing instrument, and belongs to the technical field of medical instruments. Comprising a handheld pipe, a connecting circular plate is fixedly connected to the right side of the handheld pipe, a control mechanism is arranged on the right side of the connecting circular plate, a flexible pipe is fixedly connected to the left side of the handheld pipe, and a clamping mechanism is arranged at the left end of the flexible pipe; the multiple flexible clamping plates are connected with the flexible pipe through the first rotating pieces, and matched with a linkage structure of the elastic pulling pieces and the pulling plates, the folding angle can be adjusted in a self-adaptive mode according to the size and shape of broken stones during clamping, wrapping type clamping of the broken stones is achieved, compared with traditional single-point or linear contact clamping, the contact area is greatly increased, meanwhile, the clamping efficiency is greatly improved, and meanwhile the clamping effect is good. The anti-slip strips integrally formed on the inner side walls of the flexible clamping plates can effectively increase friction resistance with the surfaces of the broken stones, and stable holding can be achieved even if the broken stones with smooth surfaces and adhered with mucus are used.

A method and system for guiding renal stone removal. The method includes steps for facilitating or guiding three stages of the intervention: renal access, stone removal, and a stone-free check. This is facilitated by a method which includes three stages: an intra-operative image guidance phase for obtaining CT-based imagery of the renal area; a renal access guidance phase in which the aforementioned CT-based imagery is used to generate intervention guidance imagery to guide renal access, and a stone-free check phase in which further intra-operative CT images are acquired to check the stone-free status of the patient.

This invention discloses a multifunctional percutaneous nephrostomy kit, relating to the field of kidney stone surgery. It includes an outer sheath with a hollow working channel inside, and a flexible endoscope sheath inserted into the working channel of the outer sheath. The bottom of the flexible endoscope sheath has a curved section. This invention inserts the flexible endoscope sheath into the outer sheath and then inserts a flexible endoscope into the flexible endoscope sheath. The bend on the flexible endoscope can drive the curved section on the flexible endoscope sheath to bend, placing the curved section in a bent state. By rotating the bend on the flexible endoscope, the orientation of the curved section can be changed, allowing for the extraction of stones at the insertion point of the outer sheath and in the area surrounding and above the insertion point, effectively improving the stone removal effect. Simultaneously, a fixing mechanism is provided to clamp the outer sheath with multiple clamping plates, eliminating the need for medical personnel to hold it by hand and ensuring the accuracy of subsequent operations.

This invention provides a stone retrieval device for hepatobiliary surgery, comprising an operating shell with a slidably mounted button. A mounting frame is slidably mounted inside the operating shell, and two sets of stone retrieval clamps are mounted on the mounting frame. A drive frame is also slidably mounted inside the operating shell, connected to the button via a drive mechanism to convert the sliding of the button into the sliding of the drive frame. The drive frame has a linkage unit connected to the mounting frame, which converts the sliding of the drive frame into the sliding of the mounting frame, simultaneously driving the two sets of stone retrieval clamps to close and open upon approaching the operating shell. A receiving mechanism is provided on the operating shell, which slides below the stone retrieval clamps to receive the stones when the two sets of stone retrieval clamps open. This stone retrieval device can automatically collect stones during the stone retrieval process, eliminating the need for repeated instrument movement, reducing stone retrieval steps, improving surgical safety, and lowering the risk of stone residue.

1. Name of the product in this design: Flexible grasping forceps for ureteroscopic stone removal. 2. Application of this design: This design is used for flexible stone retrieval under ureteroscopy. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

This utility model provides a multi-channel urinary system stone removal device, which includes an insertion part and an operating part. The insertion part is continuously provided with a front end, a bending part and a tube body from the distal to the proximal side. The front end of the insertion part is provided with a camera element for imaging the cavity. The insertion part is provided with at least one first tube and at least one second tube. The first tube is used to deliver liquid or energy device into the human body, and the second tube is used to expel liquid from the body. The operating part is located at the base end of the insertion part. The operating part includes a gripping part, a bending operating part, a first connector and a second connector. The gripping part is for the user to hold and use. The first connector is connected to the first tube, and the second connector is connected to the second tube. The first connector is suitable for connection with an external irrigation device, and the second connector is suitable for connection with a negative pressure suction device.

The utility model relates to the technical field of urinary calculus removing, and discloses a urinary calculus removing device which comprises a tube body, one side of the tube body is fixedly connected with a semicircular sleeve, the inside of the semicircular sleeve is fixedly connected with a limiting rod, one side of the limiting rod is fixedly connected with a stretching mechanism, and the other side of the limiting rod is fixedly connected with a connecting rod. And the stretching mechanism comprises a cylinder, a moving rod, a handle and a spring, and a connecting column is slidably connected to the interior of a limiting rod. According to the urinary calculus taking device, through the arrangement of the adjusting mechanism, the upper clamping plate, the lower clamping plate and the collecting bin, when clamping is conducted, a connecting column is pulled outwards, the connecting column drives a square block to move, then the square block drives a rotating rod to rotate, and the rotating rod drives the upper clamping plate and the lower clamping plate to be closed to clamp calculus; during clamping, small stones can be firstly clamped into the collecting bin of the lower clamping plate, so that a doctor is prevented from clamping the stones back and forth one by one, a larger clamping radius is provided, the stones are convenient to clamp, and the stone taking efficiency is improved.

The invention discloses a disposable ureter lithotripsy and discharge system and device, and belongs to the technical field of urinary surgery minimally invasive surgical instruments, and the system comprises an acquisition module which is used for obtaining a pressure value and a temperature value in a ureter; a peristaltic pump; filling a drainage tube; the filling module is used for controlling the filling flow through the filling pump according to the pressure value and the temperature value; a suction pump; a first suction drainage tube; a second suction drainage tube; the suction module is used for controlling the suction flow of the second suction drainage tube through the suction pump according to the pressure value and the temperature value; the disposable ureter lithotripsy and calculus discharging system and device are used in a laser lithotripsy operation, intelligent temperature and pressure measurement is achieved, compared with a traditional host, perfusion flow and suction pressure are regulated in real time in the operation, clear view and nephrology safety are maintained, the pressure in the pelvis is regulated through perfusion flow, the negative pressure suction sheath is tightly attached to the lithotripsy part, fragments are adsorbed in real time and sucked out of the body, and the operation efficiency is improved. And residues are reduced.

A distal-proximal double-strike ureteroscope and a method for removing stones using the ureteroscope are disclosed. The distal-proximal double-strike ureteroscope includes an operating part, a ureteroscope body having a front end and a rear end, a first stone-dispelling mechanism, and a second stone-dispelling mechanism. The first stone-dispelling mechanism is used to dispel stones within the kidney, and the second stone-dispelling mechanism is used to dispel stones obstructing the suction port. Thus, the distal-proximal double-strike ureteroscope employs a "distal-proximal double-strike" approach, which simultaneously dispels stones embedded in the kidney or movable stones and clears stones obstructing the suction port, thereby improving stone removal efficiency.

This invention relates to the field of medical device technology and discloses a stone retrieval device for hepatobiliary surgery. It includes a self-controlled opening and closing mechanism, comprising a valve stem that can be inserted into a first suction port to prevent gas flow and a first helical spring that generates an elastic preload on the valve stem; and a manual opening and closing mechanism, comprising a conical inner shell that can be blocked inside a conical cavity, a ring-shaped permanent magnet embedded in one end of the conical cavity and generating magnetic adsorption on the conical inner shell, and a second helical spring that generates elastic pressure on the conical inner shell. This hepatobiliary stone retrieval device utilizes the principle of air pressure adsorption to absorb bile and other fluids near the stones during surgery, thereby reducing the obstruction of the vision by the fluid and improving surgical efficiency. Furthermore, the device uses axial suction to adsorb and fix the stones, achieving rapid stone fixation and further improving surgical efficiency.

The invention discloses a reusable endoscope with a disposable adjustable bent sheath. The reusable endoscope comprises a reusable endoscope body and the disposable adjustable bent sheath which are detachably connected. The reusable endoscope body comprises a soft lens and a soft lens handle arranged at the tail end of the soft lens in a sealed mode. The disposable adjustable bending sheath comprises an endoscope sheath, a suction channel and a working channel. The soft lens, the suction channel and the working channel are jointly arranged in the lens sheath; and the working channel and the suction channel are shared channels or mutually independent channels. When the reusable endoscope body and the disposable adjustable bent sheath are combined to be used as the ureteroscope, on one hand, the existing stopping-viewing-sucking mode is changed into the mode of viewing while breaking and sucking, and the operation efficiency and the calculus removal rate are greatly improved; on the other hand, when the outer diameter of the endoscope sheath is minimized, the stone suction diameter can be maximized, the suction equivalent can be maximized, and an ideal stone removal angle in an operation can be achieved more easily. In addition, the risk of cross infection caused by the fact that the working channel is difficult to disinfect can be structurally eliminated, and then the cost of a patient can be reduced.

The utility model relates to the technical field of medical instruments, and discloses a novel mesh basket structure. The novel net basket structure comprises a device structure assembly, a moving structure assembly is installed in the device structure assembly, a moving block is installed at the upper end of the moving structure assembly, connecting plates are installed on the two sides of the moving block, and an inflation pump is installed on the right sides of the connecting plates; the anti-blocking assembly is installed in the moving structure assembly, the net basket body is installed at the upper end of the anti-blocking assembly, the stabilizing block is installed on the inner side of the net basket body, the air bag is installed at the upper end of the net basket body, the air inflation pipe is installed on the right side of the upper end of the air bag, and the connecting ring is installed on the right side of the air inflation pipe. The technical problem that when the mesh basket is used and stones are large, the stones are prone to being clamped in gaps of the mesh basket, so that the mesh basket cannot be used after stone removal is clamped is effectively solved, and the technical problem that the mesh basket cannot be used after stone removal is effectively solved.

The invention discloses a stone removing machine with a stone removal loss rate closed-loop control function. Comprising a machine frame, a screen box obliquely arranged on the machine frame, a vibration mechanism driving the screen box to vibrate in a reciprocating mode, an air suction pipe arranged at the top of the screen box, a feeding pipe arranged at the top of the screen box and located behind the air suction pipe, a discharging opening formed in the front side of the screen box and a stone discharging opening formed in the rear side of the screen box. The material returning plate assembly is installed in the screen box and located between the screen mesh and the stone discharging port, the detection unit is arranged to monitor the proportion of stones and grains in materials discharged from the stone discharging port in real time, the inclination angle of a material returning plate body is automatically adjusted in combination with the controller, and closed-loop control over the stone discharging loss rate is achieved. According to the control mode, the material returning amount can be automatically optimized according to the actual working condition, and the grain loss is effectively reduced on the premise that the stone removing effect is guaranteed.

This invention discloses a sheath, a guide sheath, an endoscope, a lithotripsy system, and a control method thereof, relating to the field of medical device technology. The sheath includes a tube body with a retaining structure protruding from the inner wall of the tube body. When the distal end of the endoscope insertion portion is located on the proximal side of the retaining structure, at least a portion of the retaining structure can resist the fluid infused into the endoscope. This design is beneficial for improving stone removal efficiency and technical expulsion rate.