136 results about "Dormia basket" patented technology

The invention discloses a foreign body mesh basket and a medical device for taking out foreign bodies in minimally invasive surgery, and relates to the technical field of medical instruments. The foreign matter mesh basket comprises a fixing ring, a plurality of traction wires and a woven mesh body. One end of each traction wire is connected to the opening end of the woven mesh body, and the other end is connected with the fixing ring; the woven mesh body comprises a first circular-truncated-cone-shaped mesh part and a second circular-truncated-cone-shaped mesh part which are in a double-circular-truncated-cone shape, the first bottom face forms an opening end, the second bottom face and the third bottom face are communicated and located on the same plane, the area of the second bottom face is larger than that of the third bottom face, and the second bottom face and the third bottom face are connected through the circular-ring-shaped mesh part. The plane where the circular ring net-shaped part is located is perpendicular to the axis of the woven net body, and the fourth bottom face is a closed net-shaped face. The foreign matter picking efficiency of the foreign matter net basket is improved, meanwhile, it is guaranteed that flowing of liquid in the lumen of the human body is not affected, and the operation safety is improved.

The invention discloses a folding type clamping device, relates to the technical field of medical instruments, and is suitable for working channels of superfine endoscopes such as a breast duct endoscope. The clamping device comprises a clamping assembly, a transmission assembly, a limiting assembly and an operation assembly. The clamping assembly comprises a metal pipe body and an integrally-formed retractable net basket structure, the transmission assembly is a traction steel wire with the front end connected with the net basket structure, the limiting assembly limits the stroke of the traction steel wire through a bridge type metal pipe and a movable pin, and the operation assembly drives the traction steel wire to move. The mesh basket structure is in a closed state without external force and can be inserted into an endoscope channel; after the tissue leaves the channel, the operation assembly drives the traction steel wire to control the net basket to open and close to clamp the tissue in combination with visual observation. The device is made of medical stainless steel, is a disposable sterilized product and can be used after being disassembled. The device breaks through the sampling bottleneck of a superfine endoscope, sampling is stable and safe, early diagnosis of breast diseases is assisted, and the clinical value of the endoscope is improved.

The present invention discloses a ball head locking mechanism of a basket catheter and a basket catheter, and relates to the technical field of medical devices, wherein the ball head locking mechanism includes a ball head screw, a ball head screw sleeve and a restraining ring, wherein the ball head screw is threadedly connected to the inner side of the ball head screw sleeve, and the outer wall of the ball head screw sleeve is a ramp structure. The present invention screws the ball head screw and the ball head screw sleeve with threaded matching together, and relies on the restraining ring to effectively press the end of the nickel-titanium sheet of the basket structure on the ramp structure, thereby achieving effective locking and avoiding the risk of falling off caused by glue bonding. In addition, the ball head screw sleeve can also take the form of a combination of an expansion ring and an extrusion screw sleeve. When the ball head screw and the extrusion screw sleeve are relatively rotated and tightened, the ball head screw and the extrusion screw sleeve can also jointly extrude the expansion ring, so that the expansion ring expands outward, which is convenient for pressing the nickel-titanium sheet, further assisting in locking the nickel-titanium sheet, and ensuring the locking effect.

The utility model provides a mesh basket assembly. The mesh basket assembly comprises a sheathing canal and a protective cover. The sheathing canal is used for introducing a surgical instrument; the protective cover comprises an annular tube body connected to the tail end of the sheath tube, a plurality of supporting strips extending from the end, away from the sheath tube, of the tube body, and a covering film. The supporting strips are made of elastic materials, the multiple supporting strips are distributed at intervals along the tail end of the pipe body and jointly define an annular structure, the covering film is an annular film made of elastic materials, and the covering film is arranged on the annular structure defined by the supporting strips and fixedly attached to the supporting strips. When the annular structure defined by the supporting strips bears thrust in the outward direction from the inner side of the annular structure, the supporting strips expand outwards to be in a horn shape, and when the thrust disappears, the supporting strips bear elastic restoring force of the covering film and restore to the initial state. The utility model further provides a stone breaking and clearing protection device. Compared with the prior art, the mesh basket assembly and the stone breaking and clearing protection device are better in stone breaking and clearing safety.

The invention provides a guide wire calculus removing mesh basket and application thereof. The guide wire calculus removing net basket comprises a net basket body, a guide wire, a net basket cap, an outer sheath tube and a handle, the tail end of the guide wire is connected with the head end of the net basket cap, the net basket cap is arranged outside the head end of the outer sheath tube, the net basket body is inserted into the outer sheath tube through the tail end of the outer sheath tube, one end of the net basket body is connected with the tail end of the net basket cap, and the other end of the net basket body is connected with the handle. The handle is located outside the tail end of the outer sheath tube. The device can be inserted through various instrument channels such as a nipple incision knife, SpyGlass or a pancreatic and biliary duct imaging system forceps channel, and multi-scene calculus removal treatment is achieved; in the process of releasing the mesh basket, the head end of the soft guide wire crosses the calculus and enters the bile duct at the far end more easily, release of the mesh basket is facilitated, and the calculus can be extracted by pulling back the mesh basket.

The invention provides a force value protection component and an ablation handle, and relates to the field of force value protection. The force value protection component comprises a force conduction part, a limiting part and a pulling force generation part. The force conduction part is fixedly connected with the limiting part; the limiting part is in contact with the tension generation part; the force conduction part is configured to conduct the tension to the protected object and conduct the counter-acting force of the tension to the limiting part; and the limiting part is configured to limit the displacement of the force conduction part, so that the protected object is not subjected to the pulling force any more under the condition that the preset external force value is reached. By using the force value protection component provided by the embodiment of the invention, the target object can be protected in time when the external force borne by the target object reaches the preset external force value, and the target object is prevented from being further damaged by the external force. When the force value protection component provided by the invention is applied to the ablation handle, excessive expansion of the net basket caused by misoperation can be effectively prevented, so that the risk of vascular injury is reduced.

The invention discloses a calculus removing net basket which comprises a sheath tube, the guide wire is arranged in the sheathing canal in a penetrating mode, one end of the guide wire is connected with a mesh basket body, and the guide wire can move in the axial direction of the sheathing canal and drive the mesh basket body to stretch out of the sheathing canal to be unfolded or retract into the sheathing canal; the blocking assembly comprises a connecting sleeve, a catheter and an air bag, the connecting sleeve is connected to the outer side of the end, away from the mesh basket body, of the sheathing canal, one end of the catheter is connected to the connecting sleeve, and the other end of the catheter extends to the end, close to the mesh basket body, of the sheathing canal in the axial direction of the sheathing canal; according to the calculus removing net basket, the air bag is used for conducting expansion blocking behind calculus, the calculus is effectively prevented from moving inwards, the calculus removing efficiency and convenience of the calculus removing net basket on calculus cleaning are greatly improved, and the calculus removing net basket is particularly suitable for calculus with the large size.

The invention belongs to the field of medical instruments, and discloses a lung ablation catheter, a detection method and an ablation system.The lung ablation catheter comprises a mesh basket support, a catheter assembly and a plurality of electrodes, the mesh basket support comprises a plurality of branch supports, the far ends of the branch supports converge together, and the near ends of the branch supports converge together; the branch stent comprises a branch far-end section, a branch middle section and a branch near-end section; the catheter assembly is connected with the near end of the net basket support, and more than two electrodes are arranged on each branch middle section at intervals; the mesh basket support is controlled by the catheter assembly to have a contraction state and an unfolding state, in the unfolding state, the deformation amount of the branch middle section is smaller than the deformation amount of the branch far-end section and the branch near-end section, the branch middle section is parallel to the central axis of the mesh basket support, and the electrode is made to be attached to the airway wall of the lung. When the mesh basket stent is unfolded under stress, the deformation of the branch middle section is smaller than that of the branch far-end section and the branch near-end section, so that the electrode is attached to the airway wall of the bronchus in parallel as far as possible, and the ablation effect is improved.

The utility model relates to the technical field of surgical medical instruments, in particular to a drive control handle and calculus removal mesh basket, which comprises an outer tube, an inner tube, a connector and a knob, the outer tube is provided with a limiting groove, the inner tube comprises a fixed part and a sliding part, the sliding part is connected with the connector, the sliding part is provided with a first limiting piece, and the near end of the sliding part is provided with a sliding cavity. A mounting channel is formed in the fixing part, the fixing part comprises a sliding table located at the far end, and a sliding stroke exists between the sliding table and the sliding cavity in the axial direction. The sliding part serving as a part of the inner tube is arranged in the outer tube and is protected by the outer tube, the exposed area of the reciprocating motion gap is reduced, then the clamping risk to the palm and the probability that foreign objects fall into the reciprocating motion gap are reduced or avoided, and the working stability and convenience of the driving and controlling handle and the calculus removing net basket are improved; and meanwhile, the outer pipe and the fixing part can provide a fixed holding supporting part, so that the holding operation comfort and convenience of the operator are further improved.

The present invention belongs to the technical field of medical devices, and specifically relates to a bile duct stone removal instrument in ERCP surgery, which is mainly used for removing gallstones in ERCP surgery; it mainly comprises: a main branch, having a first proximal end and a first distal end opposite to each other; a push tube, having a second proximal end and a second distal end opposite to each other, wherein the push tube is sleeved on the outer side of the main branch; a stone removal part, which is arranged around the first proximal end of the main branch and connected to the second proximal end, wherein the stone removal part is configured such that when the second proximal end moves toward the first proximal end, the stone removal part is partially away from the outer wall of the main branch to present an expanded state, and when the second proximal end moves toward the direction away from the first proximal end, the stone removal part is partially close to the outer wall of the main branch to present a contracted state; it mainly solves the problem that the existing stone removal basket or stone removal balloon cannot grasp the stones well, resulting in the need for repeated operations, thereby prolonging the operation time and increasing the pain of the patient.

The invention discloses a lithotomy and lithotripsy handle and a lithotomy and lithotripsy integrated medical instrument, and belongs to the technical field of medical instruments, the lithotomy and lithotripsy handle comprises an operation part and a guide sheath tube capable of collecting a mesh basket, the guide sheath tube is installed on the operation part, the operation part is provided with an operation device, and the operation device at least has a lithotomy mode and a lithotripsy mode; the lithotomy and lithotripsy integrated medical instrument comprises a mesh basket and a lithotomy and lithotripsy handle. In the calculus removing mode, the operation device can convert external force applied by an operator into driving force for driving the mesh basket to move in the axial direction of the guiding sheath tube, and the mesh basket is driven to be released or recycled through the guiding sheath tube so that calculus removing can be achieved. In the lithotripsy mode, the operation device can convert external force applied by an operator into lithotripsy force for driving the mesh basket to be collected to the guiding sheath tube in the axial direction, so that the mesh basket collects the lithotripsy under the constraining force of the guiding sheath tube. The lithotripter has the advantages that lithotripsy can be carried out during lithotripsy in the bile duct and during lithotripsy, a lithotripsy handle does not need to be externally connected independently, economic cost is low, operation is easy, and the risk of cross infection is avoided.

In order to solve the problems that in the prior art, an endoscopic calculus removing mesh basket structure is poor in development in an operation and cannot be bent along with an endoscope at multiple angles, the endoscopic calculus removing mesh basket structure comprises a mandrel and a mesh basket assembly, the mandrel comprises a trunk section and a guide section, the guide section comprises a development spring tube, and the development spring tube is connected with the mesh basket assembly. The mesh basket assembly comprises mesh basket wires and a mesh basket structure, the mesh basket wires are connected with the mesh basket structure, the mesh basket structure is located at the end of the mandrel, the developing spring tube is arranged on the periphery of the mesh basket wires in a sleeving mode, and the mesh basket wires are memory metal wires. According to the endoscopic calculus removing mesh basket structure, the developing spring tube is connected with the mesh basket wire in the sleeved mode, so that the guiding section has the good memory metal function and twisting resistance performance, multi-angle smooth opening, closing and bending of the calculus removing mesh basket are achieved, the developing spring tube of the guiding section plays a developing role, and compared with an existing calculus removing mesh basket product, the endoscopic calculus removing mesh basket structure has the advantages of being simple in structure and convenient to use. And the effects of multi-angle bending in the calculus removing process of the calculus removing net basket and improvement of the calculus removing view definition can be taken into consideration at the same time.

The present application discloses a bile duct stone removal device, including a sheath and a net basket, wherein a guide head is provided at the end of the net basket, and further comprising a connecting component fixed on the guide head and a guide ring sleeved on the connecting component and through which a guide wire can pass, wherein the guide ring is hinged to the connecting component. The bile duct stone removal device provided by the present application limits the guide ring on the guide head through the setting of the connecting component, and the guide ring is hinged to the connecting component, which can ensure that the guide ring can swing flexibly, so that the cooperation between the guide ring and the guide wire is smoother, and the net basket can be smoothly pushed into the common bile duct.

The application relates to the technical field of basket catheter, in particular to a basket catheter system and a basket catheter calibration method. The basket catheter system comprises a basket catheter, an operating handle, a tube body and a basket electrode assembly, the basket electrode assembly comprises a spline, a proximal end fixing seat and a distal end fixing seat, and the basket catheter system further comprises a proximal end position sensor and a distal end position sensor arranged on the proximal end fixing seat and the distal end fixing seat respectively; the basket catheter system further comprises a processing device, the proximal end position sensor and the distal end position sensor are connected with the basket catheter, and the processing device is used for obtaining a contact force of the basket electrode assembly and target tissue according to a proximal-distal end spacing change amount, a corresponding relationship between a known axial force value of the basket electrode assembly and the proximal-distal end spacing change amount and a contact angle of the basket electrode assembly and the target tissue. The application mainly solves the technical problem of how to detect the contact force of the basket catheter and the target tissue.

This application provides a basket catheter, which includes flexible circuit strips, an elastic support, basket electrodes, and a core rod. The flexible circuit strips are respectively arranged on the inner and outer surfaces of the elastic support, and multiple basket electrodes are disposed on the flexible circuit strips. The basket electrodes can be switched between a contracted state and an expanded state by operating the core rod. The basket electrodes on the inner surface of the elastic support are configured not to contact tissue. Accurate localization of key conduction areas through high-density sampling within the cardiac chambers allows for a clearer elucidation of the arrhythmia matrix, thereby providing better mapping and / or ablation results.

The utility model discloses a disposable endoscopic calculus removing mesh basket, and belongs to the field of endoscopic calculus removing mesh baskets. The disposable endoscope calculus removing mesh basket comprises a calculus removing mesh basket assembly, the calculus removing mesh basket assembly comprises a handle part and a connecting seat arranged at the lower end of the handle part, a catheter is installed at the lower end of the connecting seat, and a mesh basket body is arranged at the lower end of the catheter. One end of the mesh basket body is connected with a guide mesh basket body, an inner arm of the mesh basket body is further provided with an anti-skid protrusion, and an anti-disengaging piece is arranged on the outer side of the mesh basket body. The anti-skidding protrusions can be evenly arranged on the mesh basket body through the adhesive tape layer, when an endoscope is used, the end cap can play a certain guiding role, then the mesh basket body is used for removing stones, the stones can be stably grabbed through the evenly-distributed anti-skidding protrusions, and therefore the purpose of removing the stones is achieved. The stone mesh basket has the advantages that the stone mesh basket is not prone to falling off, stone removal is facilitated, and repeated stone removal operation is avoided.

The present invention relates to the technical field of medical instruments. Disclosed are a ball head locking mechanism of a basket catheter and a basket catheter. The ball head locking mechanism comprises a ball head screw, a ball head thread insert and a restraining ring, wherein the ball head screw is threadedly connected to the inner side of the ball head thread insert, and the outer wall of the ball head thread insert is of a slope structure. In the present invention, the ball head screw and the ball head thread insert which are in threaded fit are screwed together, and end portions of nickel-titanium sheets of a basket structure are effectively pressed against the slope structure by means of the restraining ring, thereby achieving effective locking and avoiding the use of glue bonding to reduce the risk of detachment. In addition, the ball head thread insert can further be in the form of a combination of an expansion ring and a compression thread insert. When the ball head screw and the compression thread insert are rotated relative to each other and tightened, the ball screw and the compression thread insert can also jointly compress the expansion ring, so that the expansion ring expands outwards to press against the nickel-titanium sheets, thereby further assisting in locking the nickel-titanium sheets, and ensuring the locking effect.

The invention relates to the technical field of medical instruments, and provides an ablation catheter which comprises an outer tube and an inner tube. The near end of the inner tube assembly can be movably inserted into the outer tube in the axial direction of the outer tube; the mesh basket electrode assembly comprises a plurality of electrode arms, and the plurality of electrode arms are emitted from the far end of the inner tube assembly and are gathered together at the far end of the outer tube; the far end of the inner tube assembly is provided with a plane structure, so that a plane end is formed at the far end of the ablation catheter after the inner tube assembly is connected with the far end of the mesh basket electrode assembly. According to the ablation catheter provided by the invention, the far end of the inner tube assembly is provided with the plane structure, so that the plane end head is formed at the far end of the ablation catheter after the inner tube assembly is connected with the far end of the mesh basket electrode assembly. The risk that the head end of the ablation catheter punctures the inner wall of the heart cavity can be reduced.

The invention belongs to the field of medical instruments, and provides a gastroendoscopic gastric calculus crushing device which comprises a control assembly, the control assembly comprises a shell and a handle, and the handle is fixedly mounted on the right side surface of the shell; the adjusting assembly is mounted on the surface of the bottom side of the shell; the stretching-in mechanism is installed on the surface of the bottom side of the shell, and the stretching-in mechanism is used for stretching into the stomach of a patient; the crushing assembly is mounted in the bottom end of the stretching mechanism, and the crushing assembly is used for crushing the gastric calculi; under the action of a vibration motor, the vibration motor acts on a tool apron to move, the tool apron drives a smashing cutter to conduct smashing, a steel wire rope drives a net basket to move, the net basket conveniently drives broken stones to move, continuous material supplementing is facilitated, the stone smashing efficiency is improved, the stone smashing effect is met, and after the attached broken stones are squeezed away through a cleaning plate, it is guaranteed that the surface of the smashing cutter is clean; the crushing cutter is convenient to operate and use.

The utility model discloses an interchangeable stone taking and crushing net basket, and relates to the technical field of medical instruments, the interchangeable stone taking and crushing net basket comprises a handle, a metal sheathing canal, a plastic sheathing canal and a traction steel wire, the metal sheathing canal and the plastic sheathing canal are detachably connected with the handle, a finger sleeve is slidably arranged on the handle, and the traction steel wire is arranged on the finger sleeve. And the traction steel wire is arranged in the metal sheath tube or in the metal sheath tube in a penetrating manner and is detachably connected with the fingerstall. In the calculus removing process, the plastic sheath tube and the metal sheath tube can be conveniently interchanged for use, so that repeated insertion and withdrawal of an endoscope and a calculus net basket are not needed, the operation difficulty is effectively reduced, and the operation inconvenience of an operation is reduced to a certain extent.

The invention relates to the technical field of medical instruments, in particular to a variable-diameter spiral choledochoscope calculus removal mesh basket which comprises a base body and a handle arranged at the rear end of the base body, a telescopic pin pipe is arranged at the front end of the base body, a regulation and control guide wire is connected to the handle and penetrates through the base body and the telescopic pin pipe, and the telescopic pin pipe is connected to the handle. The near end of the spiral mesh basket body is fixedly connected to the end of the regulation and control guide wire, a front end cap is arranged at the far end of the spiral mesh basket body, and when the calculus removing mesh basket is used, the regulation and control guide wire is driven by the push-pull assembly to slide back and forth relative to the telescopic pin pipe, so that the spiral mesh basket body can contract in the telescopic pin pipe, that is, the spiral mesh basket body becomes small in the radial direction; or the telescopic pin pipe is pushed out to expand outwards, namely, the telescopic pin pipe is enlarged in the radial direction, stepless continuous adjustment of the diameter of the mesh basket is achieved, meanwhile, the adjusting and controlling guide wire and the spiral mesh basket body fixed to the adjusting and controlling guide wire are driven by the rotating assembly to rotate synchronously, the spiral mesh basket body can spirally tighten or loosen around the axis of the spiral mesh basket body, and therefore the wrapping and locking effects on calculi are enhanced.

The embodiment of the invention relates to the technical field of medical auxiliary equipment, in particular to a novel drainage tube capturing device. A novel drainage tube capturing device comprises a net basket, a first catheter, a second catheter, a sliding block and a handle, the second catheter is sleeved with the first catheter, the first catheter is connected with the handle, the sliding block is arranged on the handle in a sliding mode, the sliding block is connected with the second catheter, and the sliding block pushes the second catheter to move relative to the first catheter. The net basket is arranged at the tail end of the second guide pipe. According to the drainage tube capturing device, the tube inserting distance can be reduced, the time of the drainage tube in the mouth-nose exchange process can be shortened, the exchange process of the drainage tube can be completed in the oral cavity, meanwhile, the capturing condition of the drainage tube can be observed through an endoscope, exchange of the drainage tube can be completed more rapidly, and the operation efficiency is improved. Therefore, pain brought to a patient during intubation and extubation is reduced.

1. Name of the design product: foreign body basket. 2. Use of the design product: for medical devices. 3. Design key points of the design product: lies in the shape. 4. Picture or photo that best shows the design key points: perspective view.

The invention provides an intrusive blood pump. The intrusive blood pump comprises a mesh basket and a flow channel covering film, the mesh basket comprises a cylindrical section which extends along the axial direction of the mesh basket; the runner covering film is arranged around the axis of the mesh basket in the circumferential direction in a surrounding mode. The flow channel covering film comprises a straight section and a flaring section which are arranged and connected in the axial direction of the net basket, the straight section wraps the cylindrical section in the circumferential direction of the net basket, the far end of the flaring section is connected with the near end of the straight section, the flaring section expands and extends in the direction from the far end to the near end, and the flow channel covering film is arranged on the flow channel covering film. And the net basket extends beyond the near end of the cylindrical section in the axial direction of the net basket. Through the configuration, the blood pumping lift and efficiency can be improved; the flow speed at the impeller outlet is reduced, and the pipeline loss is reduced; furthermore, under the condition that sufficient blood flow support is guaranteed, the necessary rotating speed of the impeller can be reduced, and therefore the risk of hemolysis and thrombus occurrence is reduced. In addition, due to the arrangement of the flaring section, the diameter of the flow channel is increased equivalently, and blood blockage is effectively reduced.

According to one embodiment, the boot providing system comprises a slave device, a plurality of bootstrapping devices, a plurality of bootstrapping devices and a plurality of bootstrapping devices, the present invention relates to a urinary calculus removal device comprising a guide tube insertable inside a ureter to remove calculus, a guidewire movable inside the guide tube along a longitudinal axis of the guide tube, a drive part for moving the guidewire, a medical tool connected to a distal end of the guidewire and exposed outside the guide tube, and a catheter for removing calculus from the guide tube, the camera is used for taking medical images at the far end of the guide tube; and a master device including a processor that determines a size of a guide image representation indicative of a size of a stone that can be grasped through a basket based on an estimated distance between the medical tool and a camera at a distal end of the guide tube, the size of the guide image representation indicating a size of the stone that can be grasped through the basket, and the size of the guide image representation being determined based on an estimated distance between the medical tool and the camera at the distal end of the guide tube. The master device superimposes and displays the guidance graphic representation having the determined size on the medical image captured by the camera received from the slave device.

The invention discloses a non-destructive diagnosis and treatment system which comprises an energy platform, a display platform, a visual tube mirror, a camera shooting assembly, a mesh basket assembly, an umbrella-shaped assembly, a direction adjusting assembly and the like, the umbrella-shaped assembly is passively opened when the mesh basket assembly passes through the umbrella-shaped assembly, and the umbrella-shaped assembly is automatically closed when the mesh basket assembly retracts into the visual tube mirror. According to the non-destructive diagnosis and treatment system, through the arrangement of the energy platform (host), the visual tube lens, the mesh basket, the matched tools and the like, non-destructive human body natural cavity operation can be achieved, and the situation that organs or tissues in a human body cavity are damaged by instruments in the visual diagnosis, stone breaking and stone removing processes is avoided; the injury to human tissues caused by instant high heat in the lithotripsy process is avoided, and the safety of lithotripsy operation is favorably improved. The non-injury diagnosis and treatment system can be applied to the non-injury urinary lithotripsy direction and the non-injury ERCP direction, and damage and function loss caused by cutting open sphincter to organs are avoided.

The utility model provides a choledochoscope calculus removing net basket which comprises a metal net basket, an outer sheath tube and a handle, and the outer sheath tube is connected with the handle. The metal mesh basket comprises four mesh basket wires and a connecting rod, the head ends of the four mesh basket wires are fixedly connected together and are in an inverted omega shape, and the head end of the connecting rod is fixedly connected with the tail ends of the four mesh basket wires; the outer sheath tube comprises a drainage tube section I, a drainage tube section II and a drainage tube section III, and the head end of the metal net basket is contained in the drainage tube section I; the drainage tube section II is a four-channel tube, four channels I are formed in the drainage tube section II, and a mesh basket wire is accommodated in each channel I; the connecting rod is arranged in the drainage tube section III; the lower end of one side of the handle is biconcave, the upper end of the other side of the handle is provided with a push rod moving button, and a push rod is arranged in the handle and connected with the connecting rod and the push rod moving button. The calculi in the gall bladder or the bile duct can be extracted through the choledochoscope, the mesh basket wires form the spherical mesh basket from small to large when being led out through the four channels, the spherical mesh basket is stable in shape, and the calculi of different sizes can be extracted conveniently.

The utility model belongs to the technical field of medical instruments, and particularly relates to an auxiliary guide wire for cleaning a blocked bile duct metal stent, which is mainly used for pushing accessories such as a net basket or a balloon into the blocked bile duct metal stent and mainly comprises a guide wire body, a guide wire rod and a guide wire rod. The connecting section is connected with the far end, at least one part of the connecting section is bent towards one side of the guide wire body, and at least one part of the connecting section is parallel to the guide wire body, so that the radial size of the far end is increased; the guide wire mainly solves the problems that the front end of an existing guide wire used clinically is straight or J-shaped, the front end of the guide wire enters the stent and easily penetrates into a net-shaped gap of a bile duct stent, wall penetrating is caused, subsequent accessories are introduced for bile duct stent cleaning and other operations, and misambiguity (namely, the guide wire enters a gap between the outer side wall of the stent and the bile duct wall where the guide wire cannot enter) occurs; therefore, complications such as tissue damage and perforation are caused.

The utility model relates to the technical field of medical instruments, in particular to a mesh basket part of a calculus removing mesh basket and a calculus removing mesh basket system.The mesh basket part comprises a connecting part, and the connecting part is connected with a traction part of the calculus removing mesh basket system so as to drive the mesh basket part of the calculus removing mesh basket to act; the main supporting arm is a main body part of the mesh basket part; one ends of the main supporting arms are connected with the connecting part, and the other ends of the main supporting arms are connected in a matched mode to form a net basket part.