56 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 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.

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 discloses a bendable ureteral sheath, which comprises a dilating tube, a sheath tube, a sheath tube joint, a fixed joint, a traction steel wire, a locking mechanism, a negative suction joint, and an adjustment device. It consists of a curved section and a soft bendable section that can be bent in two directions. The semi-soft non-bendable section is connected to one end of the sheath tube joint. The expansion tube passes through the sheath tube and the sheath tube joint. One end of the expansion tube is connected to a fixed The joints are connected, and the fixed joint is connected with the sheath tube joint through a locking mechanism for locking the combination of the sheath tube and the expansion tube, and a traction steel wire is passed through the sheath tube. The present invention can not only keep the combined locking of the sheath tube/dilator tube during dilation, but also ensure the locking of the flexible ureteroscope during operation by adopting the rotation locking method, especially when it is used in "flexible ureteroscope holmium laser lithotripsy", it can ensure that the flexible ureteroscope The holmium laser locks the position to prevent damage to the kidney during surgery.

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.

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.

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 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 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.

The invention provides a nephroscope capable of being operated by one hand, and belongs to the field of medical instruments. The nephroscope comprises a nephroscope body, and the nephroscope body is provided with a handheld part; the handheld part is provided with a control groove used for controlling advancing and retreating of a laser optical fiber, the handheld part is further obliquely provided with an eyepiece, and the eyepiece inclines towards the direction of the control groove so as to achieve one-hand operation; a water stop cap used for preventing water leakage is detachably arranged on the tail portion of the handheld portion, and the control groove is formed in the water stop cap. The nephroscope can realize the simultaneous control of advancing and retreating of the laser lithotripsy optical fiber and the lens body by a single hand, and the other hand can regulate and control the operation sheath at any time to achieve the effect of continuous stone chasing and hitting, so that the lithotripsy efficiency is remarkably improved, the learning curve is shortened, and the mistaken hitting of the laser optical fiber on kidney mucosa is reduced.