57 results about "Laser lithotripsy" patented technology

A device for extracting objects from the body, such as urinary stones, using a low pressure inflatable toroidal balloon that serves to engulf the object during extraction while dilating and protecting the passageway. The balloon loads onto an ureteroscope prior to insertion, rather than through the ureteroscope as do existing balloons. The toroidal balloon is a simple and unique device that may be applied external to the extracting telescope and does not interfere with existing methods for stone manipulation such as laser lithotripsy, irrigation and basket extraction in the case of urinary stone manipulation.

A medical device is provided which includes a suction conduit and an energy-transmitting conduit wherein at least some of the transmitted energy is directed to the distal region of the suction conduit. The device may include an optical apparatus for directing the energy. The device has applications in lithotripsy and tissue-removal in a patient.

A device for extracting (or inserting) objects from the body, such as urinary stones, using a low pressure inflatable toroidal balloon that serves to engulf the object during extraction (or insertion) while dilating and protecting the passageway. The balloon loads onto an ureteroscope prior to insertion, rather than through the ureteroscope as do existing balloons. The toroidal balloon is a simple and unique device that may be applied external to the extracting telescope and does not interfere with existing methods for stone manipulation such as laser lithotripsy, irrigation and basket extraction in the case of urinary stone manipulation.

A medical device includes a delivery tube and a sponge configured for deployment from the delivery tube and into the urinary tract for assisting in the removal of a stone.

A surgical laser system (100) includes a first laser source (140A), a second laser source (140B), a beam combiner (142) and a laser probe (108). The first laser source is configured to output a first laser pulse train (144, 104A) comprising first laser pulses (146). The second laser source is configured to output a second laser pulse train (148, 104B) comprising second laser pulses (150). The beam combiner is configured to combine the first and second laser pulse trains and output a combined laser pulse train (152, 104) comprising the first and second laser pulses. The laser probe is optically coupled to an output of the beam combiner and is configured to discharge the combined laser pulse train.

A medical device is provided which comprises a suction conduit and an energy-transmitting conduit wherein at least some of the transmitted energy is directed to the distal region of the suction conduit. The device may include an optical apparatus for directing the energy. The device has applications in lithotripsy and tissue-removal in a patient.

In one aspect of the present disclosure, a laser fiber may include an optical fiber. The optical fiber may include a proximal portion. The optical fiber also may include a distal portion having a distal end. The optical fiber may be configured to transmit laser energy from the proximal portion to the distal portion for emission of the laser energy from the distal end. The optical fiber also may include a distal tip surrounding the distal portion to protect the distal portion. The distal tip may include a sheet glass material having a laser energy emitting surface. The laser energy emitting surface may be defined by a chemically-strengthened surface layer.

The invention relates to an operating handle for laser lithotripsy, which has a hollow tubular structure. The operating handle is used for containing optical fiber which is connected into the operating handle by a laser stone breaker and extrudes out. One side branch pipe is formed by extending out of the main body of the operating handle and is used for connecting a vacuum suction system; the side branch pipe is communicated with a pipeline in the main body of operating handle for vacuum suction in the stone breaking process for breaking and sucking stones. The main body / side branch pipe of the operating handle is provided with a pressure valve for controlling attraction; the front end of the main body of the operating handle is also provided with a suction pipe, the optical fiber is connected into the operating handle by the laser stone breaker and penetrates out of the suction pipe, the suction pipe is a probe, and the other end of the main body of the operating handle is provided with an optical fiber protection pipe via a lock nut. The invention provides a rigid carrier for soft optical fiber in laser stone breaking, has simple and practical integral structure, is easy to assemble and disassemble and has convenient operation.

The invention relates to an electronic nephroscope, in particular to a flexible bendable electronic nephroscope for percutaneous nephroseopy surgery and an application method of the flexible bendable electronic nephroscope and belongs to a medical instrument. The flexible bendable electronic nephroscope comprises a nephroscope body, an upper bent steel rope and a lower bent steel rope. The application method includes the steps of entering a focus part, making preparations before laser lithotripsy, treating small calculi, treating large calculi and treating special positions. The flexible bendable electronic nephroscope for the percutaneous nephroseopy surgery and the application method of the flexible bendable electronic nephroscope have the advantages of compact structure, higher operability and precision in positioning.

A system and method for the destruction / ablation of stones, calculi or other hard substances by means of laser energy is disclosed. As a consequence, several important medical treatments can be performed, especially lithotripsy. The system comprises a diode laser source emitting at least at one wavelength, one or more optical fibers which convey laser radiation to the treatment site and a liquid delivery system used for creating a liquid environment around the stones (calculi). The laser device emits at least one wavelength which is highly absorbed in the surrounding / covering medium, thus causing evaporation and cavitation effects that lead to stone / calculi destruction. Different radiation configurations may be used. In one embodiment continuous radiation is used to create sparkler-less plasma bubbles able to destroy hard substances.; In another embodiment high peak power pulsed radiation is used. Wavelengths of 1470 nm, 1940 nm, or 1550 nm are preferred. Additionally it can be applied in combination with another wavelength with medium absorption in water such as 980 nm. In another embodiment a concentric double core fiber is used, in which the ignition radiation is guided in near single mode, inner core and the radiation used to maintain and enhance the pulse is guided into the surrounding second outer core. In another preferred embodiment, the use of multiple optical fibers allows for treating larger stones in a shorter time period. In another preferred embodiment, cooling liquid is supplied to the impact site to further reduce thermal heating of the stone, thus diminishing risks of tissue damage caused by stone fragment anchorage and thermal energy.; With these safer and improved methods and system, enhanced lithotripsy treatments can be performed in a shorter treatment time, destroying a wider range of stones with less risk of tissue damage, and less patient and physician stress.

The invention provides an ureteroscope with a temperature sensor and belongs to the field of medical apparatuses and instruments. The ureteroscope comprises a mirror of a handheld portion and a mirrorbody connected to the mirror, wherein a temperature sensor probe is arranged at the front end of the mirror body and is connected with a wiring post on the mirror through a wire, and the wiring postis connected with a temperature sensor processing unit through a connecting wire. The temperature sensor processing unit is connected with a displayer capable of displaying temperature at the probe inreal time. The temperature sensor processing unit is also connected with a relay, and the relay is serially connected between a holmium laser mainframe and a pedal switch. When the local temperaturein the ureter exceeds a set value in the laser lithotripsy process, the relay is disconnected, even if an operator still treads the pedal switch at the moment, holmium laser also does not work, the relay is turned on when the local temperature in the ureter is reduced to a normal range, and holmium laser can continue to work by treading the pedal switch. Therefore, complications such as postoperative ureterostenosis caused by local thermal injuries of the ureter can be prevented in the laser lithotripsy process.

The invention relates to a laser fiber instrument for bile duct laser lithotripsy, which is structurally characterized in that the instrument is a lathy soft conveying tube which is made of metal or plastics and of which the length is 1.4 to 1.6 meters; an inflating passage, a wire guiding passage and a laser fiber passage are arranged in the conveying tube; the periphery of the front section side of the conveying tube is covered with a ball bag communicated with the inflating passage and fully attached to the outer wall of the conveying tube when the ball bag is not inflated, and the front end of the conveying tube is provided with an annular radiation mark. A flared opening is at the top end of the conveying tube, the tail end of the flared opening is communicated with the wire guiding passage, and the front end of the laser fiber passage is a conical opening capable of accommodating a laser fiber head and positioned on the side wall of the flared opening. The laser fiber instrument can convey the laser fiber to bile duct calculus more smoothly through a guide wire and the wire guiding passage under the condition that the conveying tube cannot be smoothly bent in local human body, shortens time of laser lithotripsy, improves curative effect, and solve the significant problem of the bile duct laser lithotripsy for the human body.

The invention discloses a laser lithotripsy device, and belongs to the field of medical equipment. A bed body is a horizontally arranged cuboid; a control part is arranged in the middle of the bed body; binding bands are arranged at positions, which are located below the control part, on the bed body; bed body control keys are arranged on the left side edge of the control part; a controller is mounted below the bed body; operation keys are arranged on the left side edge of the front end of the bed body; a vertical rack is arranged on the right side of the bed body; a longitudinal sliding rail is mounted in the vertical rack; a transverse rack is arranged at the top end of the vertical rack; a transverse sliding rail is mounted at the bottom end of the transverse rack; a sliding unit is mounted on the transverse sliding rail; an impact wave source device is mounted at the bottom end of the sliding unit; handles are arranged on the left and right sides of the impact wave source device. In the use process of the laser lithotripsy device, the operation keys are controlled by the controller, and the sliding unit and the impact wave source device are controlled through the operation keys; the sliding unit slides up and down along with the longitudinal sliding rail, and the impact wave source device slides along with the sliding unit; the controller is high in control accuracy.

The invention discloses an intelligent lithotripsy system which is used in laser lithotripsy operation. The intelligent lithotripsy system consists of a laser lithotripsy machine, a flexible ureteroscope system, a display, a perfusion system and a main machine, wherein the laser fiber of the laser lithotripsy machine is capable of being fed into a human body through a working channel of a flexibleureteroscope; and the main machine receives an intracorporeal focus environment detected by the tip end of the flexible ureteroscope and judges the size of urinary stone and the distance between thetip end of the laser fiber and the urinary stone through an image recognition technique and a distance sensor mounted in the flexible ureteroscope. By adopting the intelligent lithotripsy system, whether a laser generator can be powered on or not can be judged according to a preset safe distance table, in addition, images can be automatically recognized through big data and artificial intelligence, situations of the urinary stone can be judged according to the images together with environment information such as temperatures, and suggestions about optimal laser pulse energy and laser pulse time can be provided for doctors.

A soft tip is used to trap and pulverize stone fragments between the stone and the end of a single fiber, fiber bundle or lenticular array during a pulsed laser lithotripsy procedure.

The invention provides a continuous negative-pressure suction apparatus for ureteroscopic holmium laser lithotripsy use. The continuous negative-pressure suction apparatus for ureteroscopic holmium laser lithotripsy use comprises a three-way infusion device, a liquid suction hose, a ureteral catheter, a first sealing cap, and a second sealing cap; one end of the three-way infusion device is sleeved with the liquid suction hose; the ureteral catheter is fixedly mounted at one end of the three-way infusion device, and communicates with the three-way infusion device; and a junction of the three-way infusion device and the ureteral catheter is sleeved with the first sealing cap. The continuous negative-pressure suction apparatus for ureteroscopic holmium laser lithotripsy use provided by the invention has the advantages of being low in cost, convenient to use, and capable of maintaining good field of view, improving lithotripsy efficiency, shortening operation time, preventing stone from moving up, increasing stone clearance rate, reducing renal pelvis pressure, reducing risk of infection, decreasing possibility of falling of the liquid suction hose due to pulling of the liquid suctionhose, ensuring smooth conduction of the operation and the like.

A system and method for detecting relative location of a surgical laser fiber tip relative to a surgical laser target during a surgical laser procedure utilizes a spectrophotometer to detect radiation indicative of the relative location. For example, the detected radiation may indicate contact between the fiber tip and a stone being subjected to laser lithotripsy, so as to prompt the surgeon to withdraw the fiber tip from the stone and / or take other action to limit contact-induced erosion of the fiber tip, and to avoid saturation of the endoscope camera resulting from the flash that occurs following contact. In addition, the absence of any detected radiation by the spectrophotometer may be used to indicate that the stone is no longer present, or that the fiber tip is no longer aimed at the stone, prompting the operator to reposition the fiber and / or temporarily cease firing of the laser. The main surgical laser may be a pulsed Holmium laser, which is delivered to the target through the optical fiber together with a pulsed 532 nm aiming beam.

A method of reducing retro-repulsion of a stone during a laser lithotripsy procedure involves the use of a spacer tip or standoff sleeve to create a passage between the tip of a fiber and a stone, and to prevent collapse of a bubble formed by vaporization of and / or gas pressure on liquid present in the passage. The laser radiation may consist of continuous or quasi-continuous wave radiation that is relatively low in power compared to the therapeutic pulses, or may consist of the therapeutic pulses if the pulse frequency is high enough to prevent collapse of the bubble between pulses. The spacer tip or standoff sleeve further prevents collapse of the bubble and ingress of liquid into the laser path. The spacer tip or standoff sleeve may be a generally-cylindrical protective cap that is fitted to an end of the optical fiber and that extends beyond the fiber tip to provide a predetermined spacing or standoff between the fiber tip and the stone when the protective cap is in contact with the stone. Alternatively, the spacer tip or standoff sleeve may be a catheter sleeve that permits axial adjustment of fiber position within the sleeve.

A system and method for detecting relative location of a surgical laser fiber tip relative to a surgical laser target during a surgical laser procedure utilizes a spectrophotometer to detect radiation indicative of the relative location. For example, the detected radiation may indicate contact between the fiber tip and a stone being subjected to laser lithotripsy, so as to prompt the surgeon to withdraw the fiber tip from the stone and / or take other action to limit contact-induced erosion of the fiber tip, and to avoid saturation of the endoscope camera resulting from the flash that occurs following contact. In addition, the absence of any detected radiation by the spectrophotometer may be used to indicate that the stone is no longer present, or that the fiber tip is no longer aimed at the stone, prompting the operator to reposition the fiber and / or temporarily cease firing of the laser. The main surgical laser may be a pulsed Holmium laser, which is delivered to the target through the optical fiber together with a pulsed 532 nm aiming beam.

The invention discloses a pair of laser lithotripsy fixing forceps, and relates to the technical field of medical instruments. The forceps comprise a main body and light-guide fibers, wherein a clamping assembly is arranged at one end of the main body, and a driving rod is arranged in the main body in a sliding manner; one end of the driving rod is connected with the clamping assembly, and the other end of the driving rod is connected with a driving handle; the clamping assembly comprises two clamping jaws which are oppositely arranged; at least one clamping jaw is internally provided with a first optical fiber channel; an outlet of the first optical fiber channel is opposite to the other clamping jaw; a second optical fiber channel is arranged in the main body; and the optical fiber sequentially penetrates through the second optical fiber channel and the first optical fiber channel. According to the laser lithotripsy device, by arranging the clamping assembly, the situation that whenlaser lithotripsy is conducted on calculus, the calculus jumps or escapes out of the visual field is avoided, then the laser lithotripsy efficiency is improved, and injuries of laser to human tissue are reduced.

The invention discloses a stone eliminating machine by utilizing holmium lasers and ultrasonic waves to perform lithotripsy. The machine comprises a holmium laser device. One side of the holmium laser device is provided with an optical fiber. The optical fiber horizontally extends to the tail end and is provided with a light gathering cavity. The lower end of the holmium laser device is provided with a support board. One side, close to the light gathering cavity, of the upper end of the support board is provided with a back refraction mirror. A front refraction mirror is arranged at one side, close to the back refraction mirror, at the upper end of the support board. The stone eliminating machine utilizing holmium lasers and ultrasonic waves to perform lithotripsy has the following beneficial effects: with the stone eliminating machine utilizing holmium lasers and ultrasonic waves to perform lithotripsy, a positioner located at the upper end of a display pipe is utilized so that a cystoscope and a holding device can accurately detect the accurate positions of stones; the holmium laser device and an ultrasound therapy apparatus are adopted for laser lithotripsy; the stones subjected to laser are collected by the holding device in order to prevent stone fragments subjected to laser decomposition from obstructing the intestines and stomach; while laser instantly reaches high temperature, a nozzle is utilized to cool down the temperature; and finally, the purpose of eliminating the stones is fulfilled.

The invention provides a lithotripsy basket catheter with a lithotripsy balloon. The lithotripsy basket catheter comprises a catheter e and a connecting rod type basket arranged in the catheter. The catheter comprises a first catheter section, a second catheter section and a third catheter section which are sequentially communicated; a balloon is arranged outside the second catheter section; and aballoon inflation channel and a basket connecting rod channel for displacement are arranged in the catheter. After calculi are taken by the basket, the basket is tightened, and the calculi can be fixed and tightly attached to the lithotripsy electrode at the head end of the catheter. After the balloon is filled, broken calculi can be prevented from entering an intrahepatic bile duct in the calculi breaking process. After the common bile duct calculi are crushed, the broken calculi can be dragged into the common bile duct by using the balloon, or after the common bile duct calculi are crushed,the broken calculi are dragged into the duodenum by using the balloon or the basket. By arranging the lithotripsy electrode, large common bile duct calculi can be subjected to plasma lithotripsy, microelectrode lithotripsy and laser lithotripsy under X-ray, choledochoscope assistance is not needed, and the lithotripsy basket catheter is more suitable for primary hospitals.

The invention provides an endoscope with a pelvic stone removing function, a system and an application method, the endoscope comprises a handle part, an insertion part and a tip part, one end of the insertion part is connected with the handle part, and the other end of the insertion part is connected with the tip part; the tip part is provided with a first working channel and a first auxiliary channel, the insertion part comprises an insertion main body, the insertion main body is provided with a second working channel and a second auxiliary channel, the first auxiliary channel is communicated with the second auxiliary channel to form an auxiliary channel, and the auxiliary channel is used for connecting auxiliary equipment and a wire thereof; the first working channel is communicated with the second working channel to form a main channel; the handle part comprises a suction interface and an instrument interface, the suction interface is connected with external negative pressure, the instrument interface is connected with an operating instrument, and the suction interface and the instrument interface are respectively communicated with the main channel. The suction connector is communicated with external negative pressure, so that stone fragments after laser lithotripsy are drained back from the main channel and discharged to the outside from the suction connector, and stone cleaning can be achieved on an operation site.

The invention discloses a holmium laser stone crusher with a portable body temperature monitoring function, and relates to the technical field of medical equipment. The stone crusher comprises a holmium laser system and a temperature sensing and feedback system, wherein the holmium laser system is used for providing laser for stone crushing, the temperature sensing and feedback system is used formonitoring temperature information of the holmium laser system during stone crushing, and when the temperature information measured by the feedback system exceeds a preset threshold value, the holmiumlaser system is controlled to pause laser emission; and when the temperature information measured by the feedback system is lower than the preset threshold value, the holmium laser system is controlled to emit laser again. According to the stone crusher, the temperature of a stone crushing part in a laser stone crushing operation can be rapidly and accurately monitored in real time, and the use safety of the stone crusher is improved.

A method of reducing retro-repulsion of a kidney stone during a laser lithotripsy procedure utilizes a protective cap or sleeve fitted onto an end of the laser delivery fiber and extending a predetermined distance beyond a tip of the fiber to prevent contact between the tip of the fiber and a stone to limit retro-repulsion by maintaining contact between the protective cap and the stone, thereby limiting the amount of water in the path of the laser between the fiber tip and the stone. The method may further include the step of firing the laser only when contact between the protective cap and the stone is detected, implemented manually or by a contact detection system. The fiber tip may be outwardly tapered to collimate the laser beam and allow an increased spacing between the fiber tip and the distal end of the protective cap.

The invention relates to a dual-frequency dual-pulse intracavity laser stone crusher comprising a laser resonant cavity and an output module. The laser resonant cavity includes a laser generating module, a focusing lens, a Q-switched crystal, a first frequency doubling crystal and an output mirror. The laser generating module is used for generating 1064-nm laser; the Q-switched crystal is used forcarrying out Q-switching processing on laser to form pulsed laser; the first frequency doubling crystal is used for carrying out partial frequency doubling on the pulse laser to realize double-frequency pulse laser output with the length of 1064 / 532 nm; the output mirror is used for outputting the dual-frequency pulse laser to the output module; and the output module is used for transmitting thedual-frequency pulse laser to a stone part in the body for stone crushing. According to the invention, the plasma is excited on the surface of the stone by using the 532-nm laser; the plasma is heatedby using the 1064-nm laser to generate a mechanical shock wave to break the stone; and while the stone is crushed, the body tissue does not absorb the 1064 / 532-nm laser and thus the body tissue is protected from being hurt by hot damages. Therefore, only the stone is crushed but the tissue is not hurt, so that the safety of intracavity laser lithotripsy is improved.

The invention discloses a urinary system lithotripsy adsorption device, belongs to the technical field of urinary system lithotripsy. The urinary system lithotripsy adsorption device solves the problem that small-particle stones are difficult to collect in the prior art and comprises a body, a laser lithotripsy device, a water supply pipe and a vortex generation system are detachably arranged in the body, the vortex generation system is connected with a filtering system, the filtering system is fixedly connected with a negative pressure pipe, so that the technical effects of efficiently collecting the small-particle stones generated in the lithotripsy process and improving the lithotripsy efficiency are achieved.