41 results about "Stone extraction" patented technology

The invention relates to a multifunctional biliary tract stone extraction instrument which properly increases the diameter of a tube sheath to 3-5mm on the basis of the traditional biliary tract stone extraction basket. Meanwhile, the past single-cavity tube sheath is changed into a double-cavity tube sheath. An inner cavity can be used for biliary tract rinsing and radiography. An outer cavity is sealed, and the tail end is provided with a saccule-shaped device; the saccule-shaped device is stopped near the outlet of the inner cavity. An amount of water can be injected through an injection port at the position of a handgrip so as to control the size of the saccule. In addition, a scale mark is designed at a distance from the head end to the tail end of the basket tube sheath. The invention can complete the necessary operations of stone extraction, rinsing, radiography, expansion and the like in the biliary tract operation only by one instrument, can be suitable for both coeliotomy and laparoscopic surgery and is easy to master and popularize. The invention changes the current situation that laparoscope biliary tract probe must depend on a laparoscope, thereby being beneficial to the popularization of the biliary tract operations under the laparoscope in the hospitals at all levels.

A general-purpose stone extractor is provided for removing gallstones, calculi or foreign bodies from the biliary tree, urinary tract, blood vessels and the like. The stone extractor is configured to enable catcher wires to be extracted and retracted from an outer sheath near to a stone by operating a push handle member, an elastic spring being installed between a proximal end of the outer sheath and the push handle member.

The invention discloses a negative-pressure suction biliary tract stone extraction assistance device. The device comprises a handle and an auxiliary pipe, wherein the upper end of an inner cavity of the handle is provided with a first reserved groove, and an inner cavity of the first reserved groove sleeves the auxiliary pipe; an inner cavity of the auxiliary pipe is provided with an adjusting steel wire and a tube, and the right side of the auxiliary pipe is fixedly connected with a clamping plate; the right side of the clamping plate is fixedly connected with a clamping plate, and the innerside of the clamping plate is provided with an airbag; one side of the right side of the auxiliary pipe is provided with an illuminating lamp, and the other side of the right side of the auxiliary pipe is provided with a camera; the middle end of the left side of the inner cavity of the first reserved groove is fixedly connected with an electric retractable rod, and the right side of the electricretractable rod is fixedly connected with the left side of the adjusting steel wire; meanwhile, the right side of the adjusting steel wire is also connected with the clamping plate, and the lower endof the inner cavity of the handle is provided with a second reserved groove. The airbag is arranged on the inner side of the clamping plate, and the effect of efficiently extracting stones can be achieved through the effects of the tube, a draught fan, the electric retractable rod and the adjusting steel wire.

The invention discloses a three-mirror combined minimally invasive gallbladder-preserving stone removal operation, which relates to medical equipment and is used to solve the problem that the existing stone removal mesh basket will touch the inner wall of the gallbladder, and the operation process is prone to pain, trauma, bleeding, and cannot collect gallbladder stones. , flushing, imaging and expansion in one. It includes a stone extraction basket, a choledochoscope, a laparoscope, and a duodenoscope. The stone extraction basket includes a catheter, a hollow guide head positioned at the left end of the catheter, and a wire basket positioned on the guide head. The wire basket includes at least 2 first net baskets, at least 2 second net baskets, the conduit includes outer tubes, sliding tubes, inner tubes and sliding couplings arranged from outside to inside, the sliding couplings include first terminals, second The terminal is used to connect the coupling shaft of the first terminal and the second terminal. The retractable mesh basket design prevents the stone extraction mesh basket from touching the inner wall of the gallbladder. There is no pain, trauma, or bleeding during the operation, and it can integrate gallbladder stone extraction, washing, imaging, and expansion.

The invention relates to a negative-pressure suction adjustment device for trans-sheath stone extraction with an endoscope. The negative-pressure suction adjustment device for trans-sheath stone extraction with the endoscope comprises a shell, wherein an endoscope entrance, a sheath canal installation opening and a negative pressure introducing opening are formed in the shell, and a negative pressure adjustment mechanism which is communicated with a cavity of the shell is also arranged on the shell. The negative-pressure suction adjustment device for trans-sheath stone extraction with the endoscope has the advantages that an operator can directly and accurately set and control negative pressure suction force to be at a reasonable value, the situations that renal hemorrhage is aggravated due to the fact that the negative pressure is too high and drainage is not smooth, the renal low-pressure state cannot be maintained and broken calculuses can not be sucked out due to the fact that the negative pressure is too low can be avoided, the negative-pressure drainage condition of a sheath canal can be observed directly, and the situation that a drainage channel in the sheath canal is blocked due to broken calculuses and blood clots can be found and handled in time; a central negative pressure suction source commonly used in an operating room can be directly used, and no special negative pressure control and monitoring device is needed; the negative-pressure suction adjustment device is widely applied to click peeling sheaths with various calibers, nephric duct passing sheaths with various calibers and various hard and soft endoscopes, and no purpose-made sheath or endoscope is needed; the device is small, exquisite, simple in structure, convenient to use and low in cost.

The invention relates to a bile duct stone extractor, which comprises an outer tube (1), an air pump tube (3) and a balloon tube (4). The air pump tube (3) is sleeved inside the outer tube (1), and the balloon tube (4) is sleeved inside the air pump tube (3). A fill inlet (2) is communicated to the back end of the outer tube (1). An inflating unit is connected to the back of the balloon tube (4),and a balloon (5) is connected to the front end of the balloon tube (4). An extracting pump is connected to the back end of the air pump tube (3), and a sucker (8) is connected to the front end of the air pump tube (3). A dilating support (9) is connected to the outside of the sucker (8). By the aid of the bile duct stone extractor, stone extraction efficiency in gallstone operation is high, and stone caked on the wall of a bile duct can be extracted easily. The bile duct stone extractor cause low harm to patients, while contrast agent, relaxant, therapy drug and the like can be injected in any time according to needs of operations.

The invention discloses an improved reclining lithotomy position percutaneous nephrolithotomy, which relates to medical instruments. The existing percutaneous nephroscopic surgery needs to change the surgical position, which leads to prolonged operation time, increased anesthesia risk, and labor intensity of medical staff. increase and decrease patient comfort. It includes the operating table, a set of percutaneous puncture and dilation equipment, ureteroscope, percutaneous nephroscope, cold light source, camera system, bedside B-ultrasound machine, intracavitary stone removal equipment, pressure-regulating water pump, and holmium laser.

The invention provides a multi-functional stone extractor which comprises an operation handle, a guide pipe and a stone extractor and is characterized in that the multi-functional stone extractor also comprises a plasma stone breaker, a monitoring device and an illuminating device, the plasma stone breaker is connected with the stone extractor in the guide pipe, the monitoring device consists of a camera, a wire, a switch and a socket, and the illuminating device consists of a light source, a wire, a switch and a socket; the guide pipe consists of an outer resin pipe and an inner resin pipe; the switches and the sockets are used for controlling the work of the light source and the camera, and the camera and the light source are connected with the sockets and the switches through the wires penetrating through the outer resin pipe; a moving groove is arranged on a handle rod of the operation handle, and a moving control ring arranged on the handle rod can move forward and back along the moving groove; and the stone extractor consists of a slider, a fixed base and a net connected between the slider and the fixed base, and the net consists of a plurality of thin steel wire ropes uniformly arranged around the plasma stone breaker. The invention overcomes the defects of the traditional stone extraction operation and has the characteristics of flexible movement, simpleness for control, high safety and reliability, good operation effect and the like.

Methods, medical devices, and kits, and more particularly methods, devices, and kits for engaging and extracting or removing stones, calculi or other obstructions from the biliary or urinary tracts of a patient are described herein.

The invention discloses two CIT multi-endoscope combined stone extraction techniques with gallbladder preserved. According to one technique, stone extraction with gallbladder preserved is conducted by means of a peritoneoscope and a choledochoscope assisted by the peritoneoscope, a patient is in the supine position, the bottom of the gallbladder is pulled out of the abdomen with peritoneoscope gripping tongs, an incision which is 1.0-1.5 cm in size is cut with an electrocoagulation hook on the bottom of the gallbladder, a rubber hose is inserted in and gall is extracted with an injector, the choledochoscope is inserted in, stone is taken out, the choledochoscope is retracted, and then the incision on the bottom of the gallbladder is sutured. According to the other technique, stone extraction with gallbladder preserved is conducted in a total laparoscopic mode, a patient is in the dorsal elevated position, an incision which is 1.0-1.5 cm in size is cut with an electrocoagulation hook on the bottom of the gallbladder, electrocoagulation hemostasis is conducted, a rubber hose is inserted in through a Trocar hole 10 mm away from the body projection position on the bottom of the gallbladder, gall is extracted with an injector, a choledochoscope is inserted in, stone is taken out, the choledochoscope is retracted, and then the incision on the bottom of the gallbladder and the gallbladder are sutured. The two CIT multi-endoscope combined stone extraction techniques with gallbladder preserved have the advantages that the gallbladder can be found quite easily, the incision is small, and the beautifying effect is good; the first technique is easy to operate when used for abdominal external stone or polyp extraction, and the second technique is suitable for all situations with gallbladder preserved.

The invention discloses an appendix primary-secondary endoscope. The appendix primary-secondary endoscope integrates the functions of examination and treatment, and comprises a primary endoscope and a secondary endoscope, wherein the primary endoscope is a colonoscope used clinically; the secondary endoscope is a flexible endoscope of which the outer diameter is 9-10F and the length is 140-180 centimeters; a primary endoscope instrument pipeline is formed on the primary endoscope; the secondary endoscope is arranged in the primary endoscope instrument pipeline, and can advance and retreat freely in the primary endoscope instrument pipeline; during examination and treatment, the secondary endoscope passes through the primary endoscope instrument pipeline on the primary endoscope after the primary endoscope reaches cecum, and enters an appendix cavity for examination and treatment. Furthermore, the secondary endoscope consists of a secondary endoscope light source, a secondary endoscope electronic camera and a secondary endoscope instrument pipeline, wherein the diameter of the secondary endoscope instrument pipeline is 1.2 millimeters; the secondary endoscope can be used for injecting water for flushing the appendix cavity through a guide wire, performing biopsy on appendical lesions through secondary endoscope biopsy forceps, and extracting appendiceal fecalith through a secondary endoscope stone extraction instrument (such as a stone extraction basket or balloon).

The invention relates to the technical field of hepatobiliary surgery, and discloses a hepatobiliary surgery gall-stone extraction device which comprises an outer cylinder, a partition plate is fixedly mounted in the middle of the inner wall of the outer cylinder, a lead screw is rotatably arranged on the right side of the partition plate, a nut is in threaded connection with the outer wall of the lead screw, and a push block is fixedly mounted on the outer wall of the nut. A push rod is fixedly installed on the side, facing the partition plate, of the push block, and the left end of the push rod penetrates through the partition plate and is fixedly connected with a right side plate. During use, the end, provided with the collecting barrel, of the outer barrel extends into the body of a patient through a minimally invasive wound, then the rotary knob is screwed to enable the lead screw to rotate, the lead screw rotates to drive the nut in threaded connection with the outer wall of the lead screw to move left and right, and the nut moves left and right to drive the push rod to move left and right through the push block; and the right side plate, the collecting barrel and the left side plate can be pushed out of the outer barrel, so that calculi are conveniently collected and are collected into the collecting barrel, and the use is very convenient.

The invention provides a transmission mechanism of a fruit stone extractor. The transmission mechanism comprises a bracket, a gear, a motor and a main transmission wheel; the motor is mounted on the bracket; and the gear is engaged with the main transmission wheel. According to the transmission mechanism of the automatic pulp-breaking stone-extraction machine, the motor directly drives the main transmission wheel to rotate through the gear, so that various actions can be realized; improved gear transmission is more reliable than V-belt transmission; and the size of the whole device is much smaller than that of an original device.

The invention provides a stone stopper arranged in a gall duct through a choledochoscope. The stone stopper is a hollow body shaped like a polygonal cone, a pull ring is arranged at the top of the stone stopper, a biofilm is arranged on a side surface of the stone stopper, and an opening is formed in the bottom of the stone stopper; a plurality of elastic metal wires form edges of the polygonal cone, and a bottom end of each elastic metal wire is positioned on a bottom surface of the cone and can be folded to the bottom center of the cone under the action of external force. The stone stopper as a gallstone stopper solves a problem of stone dispersion often occurring in a conventional process of extracting and breaking stones by the choledochoscope, shortens the stone extraction time and reduces stone reoccurrence probability. The stone stopper is simple in structure and convenient in material utilization, has certain flexibility, elasticity and biocompatibility, does not cause a remarkable wound to a patient during operation, and is convenient and reliable to operate, and low in price.