Abstract: A twisting assembly (600, 900, 1000, or 1100) for tightening an elongated flexible material (100) including a base part (610, 910, 1010, or 1110) having a plurality of teeth (640, 940, 1040, or 1140) arranged in a circle; and a twisting part (650, 950, 1050, or 1150) adapted for rotating relative to the base part and the twisting part having a windlass portion (680, 980, 1080, or 1180). A portion of the elongated flexible material can be operatively connected to the windlass portion such that when the windlass portion is rotated, the portion of the material is twisted. The twisting assembly is adapted to allow movement of the twisting part away from close engagement with the teeth of the base part to allow rotation of the twisting part in one rotational direction relative to the base part. The twisting assembly is adapted to cooperatively allow movement of the twisting part into close engagement with the teeth of the base part to prevent rotation of the twisting part in the opposite rotational direction.

Abstract: An inflatable belt 100 for use in a BFR system with an outer belt material 102 hermetically sealed to an inner belt material 101 along a perimeter, thereby forming at least one inflatable chamber 103, the inflatable chamber having an input port 104 for accepting a gas into the chamber, the inflatable belt further comprising a first fastening means 110 in communication with the outer belt material, for attaching to a second fastening means 111 in communication with the outer belt material, thereby locking a circumference of the inflatable belt when wrapped around a user's limb, the inflatable belt providing sufficient volume and compliance so as to reduce spikes in pressure and thereby improve comfort and safety of the inflatable belt for use in restriction of blood flow for muscle development.

Abstract: A medical auxiliary device for joint bone replacement surgery that allows clinicians to precisely, quickly, and conveniently cut joint bones while providing stable fixation during the surgical procedure. a first auxiliary device that fits the femur to be cut, with a first fitting surface at the top that conforms to the shape of the femur. One side of the first auxiliary device is equipped with a first cutting groove and multiple locking holes. The first cutting groove allows an orthopedic saw to cut the femur, and the locking holes allow screws to pass through and fix the first auxiliary device to the femur. A second auxiliary device is fixed to the tibia to be cut, with a second fitting surface at the bottom that conforms to the shape of the tibia. One side of the second auxiliary device is equipped with a second cutting groove and multiple fixation holes.

Abstract: A surgical bur for use in cutting bone includes a stem adapted to selectively couple to an attachment tube of a micro-burring instrument assembly and is configured for selective rotation upon activation of the micro-burring instrument. The surgical bur includes a plurality of cutting flutes disposed at a distal end of the stem which defines a corresponding number of clearance surfaces disposed therebetween. Each of the cutting flutes includes a cutting edge and a trailing edge. One or more push-off elements is defined in the clearance surface between adjacent pairs of cutting flutes of the plurality of cutting flutes, the push-off elements being configured to contact bone during rotation of the surgical bur and being configured to deflect the surgical bur relative thereto and optimize the cutting efficiency and effectiveness of the surgical bur based on the rotational speed (RPM) thereof.

Abstract: A flexible modular instrument includes a shaft and an extension piece. The shaft includes an interior segment having a first outer cross-sectional dimension and an end segment extending from the interior segment having a second outer cross-sectional dimension less than the first outer cross-sectional dimension. The interior segment includes a radial protrusion adjacent to the end segment such that the radial protrusion extends further from a central longitudinal axis of the shaft than an outer surface of the interior segment, wherein the first and second outer cross-sectional dimensions are measured orthogonally relative to the central longitudinal axis. The extension piece includes an attachment portion removably engageable with the end segment of the shaft. The attachment portion includes an opening to receive the end segment, the opening being defined in part by a pair of arms, each arm of the pair of arms including a projection into the opening.

Abstract: Disclosed herein are patient-specific cutting guides for guiding a surgical instrument for resecting a portion of a glenoid of a patient. The cutting guides include a base portion having a contact surface shaped to substantially match at least a portion of a cavity of the glenoid. The base portion has a guide hole extending therethrough in which the guide hole has an axis coaxial with an axis of rotation. The cutting guides include one or more stabilization members extending outwardly from the base portion and having a contact surface shaped to substantially match an outer surface of a portion of a scapula of the patient. The stabilization members are oriented to take into account the patient's anatomy in orienting and stabilizing the guide with respect to the glenoid. The guide hole of the base portion is for guiding the surgical instrument to create a guide hole in the glenoid.

Abstract: A bone cutting device, such as a burr or saw blade, is irrigated to cool not only the bone cutting device itself, but also the bone of the subject on which a bone resection procedure is being performed. The bone cutting device can have one or more (e.g., a plurality of) internal flow channels that eject a cooling medium (e.g., water or an inert gas) from the bone cutting device. This emission of the cooling medium can not only flush bone chips from the resection site, thereby reducing frictional heating of the bone cutting device, but can also provide internal cooling to the bone cutting device while flowing through the one or more internal flow channels and also can cool the surface of the bone via conductive heat transfer (e.g., by the flow stream of the cooling medium impinging on the bone surface).

Abstract: Instruments, implants, bone plates, systems and methods for correcting bone deformities and fractures in the lower extremity and applying compression across joints to be fused are disclosed. Specifically, targeting instruments, implants, bone plates, systems and methods used for correcting bone deformities and/or fractures in the foot and applying compression across joints to be fused are disclosed.

Abstract: A method for capturing dislodged vegetative growth during a surgical procedure is provided. The method includes maneuvering, into a circulatory system, a first cannula having a distal end and an opposing proximal end, such that the first cannula is positioned to capture the vegetative growth en bloc. A second cannula is positioned in fluid communication with the first cannula, such that a distal end of the second cannula is situated in spaced relation to the distal end of the first cannula. A suction force is provided through the distal end of the first cannula so as to capture the vegetative growth. Fluid removed by the suction force is reinfused through the distal end of the second cannula. Subsequent to becoming dislodged, the vegetative growth is captured by the first cannula. A method for capturing a vegetative growth during removal of a pacemaker lead is also provided.

Abstract: Thrombectomy systems having curved tubular cutting devices, and methods of using them, are provided. These systems, devices, and methods can (i) effectively cut and remove a variety of thrombus tissue from blood vessels, including soft, tough, and hard tissue; (ii) safely self-collect and remove tissue particles to avoid release of emboli; and, (iii) effectively treat a blood vessel with a reduced risk of suffering vessel injuries that can lead to increased stenosis.

Abstract: Balloon catheters, sleeves, cages, cylindrical structures and endoluminal prostheses are provided with stress-applying and spacing features coupled to expandable surfaces thereof. At least one or at least some stress-applying features are immobilized onto the surface or into pre-formed indentations formed in the expandable surface. The stress-applying and spacing features may have blunt and/or rounded contact regions which contact tissue or calcified regions in the vasculature. The contact regions dent or fracture occlusive material on the wall of a vascular lumen and/or patient valve leaflets when expanded. The spacing of features can permit blood, drug, and contrast perfusion past structures expanded in the vasculature, particularly balloon catheters.

Abstract: A catheter for treating a lesion in a body lumen includes an elongate member, an enclosure, and shock wave emitters enclosed by the enclosure. At least one of the shock wave emitters has a different size than at least one of the other emitters. Providing a smaller shock wave emitter at a distal end of the catheter can help make the catheter more navigable through the body lumen.

Abstract: The invention is directed to a medical device (1) for retrieving a thrombus (2) from a vessel (3). The medical device (1) comprises an attachment element (4) arranged at a distal end (5) of the medical device (1). The attachment element (4) is adapted to attach to a proximal face (6) of the thrombus such that the thrombus (2) is retrievable by exerting a pulling force on the attachment element (4).

Abstract: The present disclosure provides a perfusion and suction system, the host controller thereof is configured to execute a constant pressure regulation method including the following steps. A pressure detection device collects the pressure in a cavity and transmits it to the host controller, the host controller adjusts perfusion and suction parameters according to the real-time monitored pressure value and the data change trend of the pressure value, so that the current pressure in the cavity is balanced at a pressure control value, thus realizing a balance state between perfusion and suction; the perfusion parameters include a perfusion flow gear, and the suction parameters include an opening threshold of a relief valve and a suction pressure threshold; the suction pressure threshold is a suction pressure threshold of the suction container preset by the host controller, and the on-off of the suction pump is controlled by setting the suction pressure threshold.

Abstract: Methods, devices, and systems for placing dental auxiliaries on teeth and/or removing dental auxiliaries from teeth are provided. In some embodiments, a device for removing a dental auxiliary from a tooth includes: a first elongate member having a proximal end and a distal end; a second elongate member having a proximal end and a distal end, where the first and second elongate members are pivotally coupled to each other; a scraper at the distal end of the second elongate member, where the scraper is configured to apply force to the dental auxiliary to remove the dental auxiliary from the tooth; and a pair of sidewalls configured to capture debris resulting from the removal of the dental auxiliary from the tooth.

Abstract: A surgical instrument includes an end tool including one or more jaws formed to be rotatable, and an end tool jaw pitch main pulley formed to be rotatable around an end tool pitch rotation shaft, a manipulation part configured to control a rotation of the end tool, a power transmission part including one or more jaw wires that are connected to the manipulation part to transmit a rotation of the manipulation part to the one or more jaws, and a connection part formed to extend in a first direction, having one end portion to which the end tool is coupled and another end portion to which the manipulation part is coupled to connect the end tool to the manipulation part, and including a bent part formed to be bent at least once while connecting the end tool to the manipulation part, wherein the manipulation part includes a pitch manipulation part including a manipulation part pitch main pulley formed to be rotatable around a pitch rotation shaft, and configured to control a pitch motion of the end tool, and a diame

Abstract: An ultrasonic transducer may be arranged within an alignment housing that can be secured to a surface of a patient. The alignment housing may include one or more ports that allow an acoustic coupling medium to be injected into a space between the surface the device is secured to and the transducer array.

Abstract: Ultrasonic surgical instruments including a handle housing, a switch frame, and a switch assembly are disclosed. The switch assembly may include a first switch arrangement movably supported on a distal portion of the handle housing and selectively movable relative to a first switch contact supported by the switch frame. The switch assembly may further include a second switch arrangement including a right switch button movably supported on a right side of the handle housing and selectively movable relative to a right switch contact supported by the switch frame, and a left switch button movably supported on a left side of the handle housing and selectively movable relative to a left switch contact supported by the switch frame. The first and second switch arrangements may be configured to be selectively actuatable by a single hand supporting the handle housing.

Abstract: A method and system are disclosed for puncturing tissue, comprising a puncture device for puncturing tissue and a supporting member for supporting the puncture device. The puncture device is capable of being insertable within the supporting member and being selectively usable in co-operation therewith during a portion of a procedure for puncturing tissue and wherein the puncture device is usable independently therefrom during another portion of the procedure.

Abstract: Adjustable, flexible cannulas of this disclosure include a body having a proximal end and a distal end. The body defines a through hole extending from the proximal end to the distal end. The distal end of the body has a flange for engaging a surface of tissue. An outer surface of the body includes a plurality of axially spaced first engagement features extending around a circumference of the body. A moveable member has a lumen for receiving the body therethrough. An inner surface of the lumen has a plurality of second engagement features for selectively engaging a corresponding one of the first engagement features. The moveable member is moveable along a length of the body to adjust a distance between the flange and the moveable member.

Abstract: A device for the placement of organic tissue, in particular endocrine tissue, includes a hollow tubular base element configured to house in a seat at least one portion of the organic tissue, a pushing element which inserted on the inside of the base element and coupled to it in a sliding manner; wherein the base element is configured to at least partially penetrate a target tissue. The base element further includes a first opening, which is arranged in a distal zone towards a first end and is configured to let out and, hence, position the organic tissue in the target tissue through the action of the pushing element.

Abstract: Push activated intraosseous (IO) access devices include power sources such as battery packs or spring driven devices. Intraosseous access devices often require training to ensure correct placement of the access device. The disclosed devices include an intuitive operation with a unidirectional activation and drive force application. The trigger can be both activated and deactivated automatically to prevent premature activation and prevent “backwalling”. The device can include various indicators to further guide a user in placing the device correctly, with little or no training. Devices can further include replaceable battery packs to ensure a full charge is available when the device is used, and to provide a multi-use device that requires less storage.

Abstract: Novel and unique medical devices and associated methods are disclosed, for a medical device for puncturing tissue at a tissue site. The medical device includes an elongate member having a distal section defining a distal section curved portion and a distal section straight portion. The distal section straight portion is distal to the distal section curved portion. An active tip is located at a distal end of the distal section. The active tip is operable to deliver energy to create a puncture through the tissue. The medical device includes a constant diameter layer. The distal section straight portion includes a minimum diameter portion located proximal to a constant diameter portion, and the constant diameter layer surrounds the minimum diameter portion.

Abstract: The present invention relates to dispensing instruments and methods for introducing treatment material and fluid-like material with an embryo into a uterus. More specifically, the present invention relates to apparatuses for delivering a fertilized egg or embryo into a maternal uterine endometrium in humans or any other mammalian species and associated computer programs for controlling said apparatuses.

Abstract: An apparatus includes a handle, and a retention assembly. The handle extends between a proximal portion and a distal portion and also defines a shaft receiving channel extending from an end of the distal portion into the proximal portion of the handle. The handle also includes a torque generating surface. The shaft receiving channel is dimensioned to receive an elongated navigation unit coupling body of a navigation compatible bone screwdriver bit, thereby reducing its effective length. The torque generating surface transmits torque onto the navigation compatible bone screwdriver bit while the elongated navigation unit coupling body is housed within the shaft receiving channel. The retention assembly inhibits decoupling of the handle and the screwdriver bit while the elongated navigation unit coupling body is housed within the shaft receiving channel.

Abstract: A system for performing a vertebral augmentation procedure is provided. The system may comprise a delivery device and an encapsulation balloon. The delivery device may include an inflation tube, a push tube provided over a proximal portion of the inflation tube, and a push handle. The inflation tube may have a delivery cannula and an injection port, wherein bone cement can flow through the delivery cannula and out of the injection port. The encapsulation balloon is configured for receiving cement and may be provided over a distal portion of the inflation tube such that the port is provided within the encapsulation balloon.

Abstract: A set screw for use in an intramedullary fracture fixation device having a longitudinal axis includes a housing and a set screw. The set screw may include a body with an external thread and an elastic member extending from the body, the elastic member having an uncompressed condition and a compressed condition. The housing may include a sidewall partially surrounding the longitudinal axis that defines a cavity for receiving the set screw such that when the set screw is at least partially disposed within the cavity and in the uncompressed condition, the set screw is secured to the housing and rotatable relative to the housing.

Abstract: Bone fixation systems for use with fractured bones having at least one fragment are disclosed, along with kits and systems containing same, as well as methods of production and use thereof. The bone fixation systems include a bone anchor that matingly engages with an opening in a bone plate and that has a cannula extending through at least a portion of the bone anchor. The bone fixation systems also include at least one elongated member that is configured and adapted to extend between the interior of the bone anchor and an outer surface of the bone to embrace and/or anchor the at least one bone fragment in place against the remainder of the fractured bone.

Abstract: A method for configuring a surgical guide and an associated implant. The implant and surgical guide are for maxillofacial osteosynthesis. Three-dimensional models of the pre- and post-operative anatomy are used to define attachment points. These attachment points are used to determine a structure for the implant and surgical guide.

Abstract: A pectus excavatum treating apparatus or assembly having two pectus bars joined by a connecting member.

Abstract: An impactor and methods of operation of an impactor. The impactor includes an electromagnetic component that has a stationary electromagnetic housing and a moving magnet actuator, a striker, and one or more strike plates. The striker is coupled to an object. The stationary electromagnetic housing includes a coil that receives an electric current. The moving magnet actuator includes one or more magnets. The magnets generate a high potential magnetic field that interacts with the electric current applied to the coil disposed within the stationary electromagnetic housing and trigger translation movement of the moving magnet actuator. The electromagnetic field, generated as a result of application of the electric current to the coil, forces the moving magnet actuator to translate. Translation of the moving magnet actuator causes the moving magnet actuator to strike at least one of the strike plates to thereby translate the striker.

Abstract: A surgical instrument includes a shaft, an ultrasonic transducer, a waveguide acoustically coupled with the ultrasonic transducer and extending distally through the shaft, and an end effector arranged at a distal end of the shaft. The end effector includes an ultrasonic blade acoustically coupled with the waveguide, a clamp arm movable relative to the ultrasonic blade for clamping tissue, and an RF electrode operable to seal tissue with RF energy. The ultrasonic transducer is operable to drive the waveguide and the ultrasonic blade with ultrasonic energy. The surgical instrument further includes an ultrasonic electrical circuit operable to energize the ultrasonic transducer, and an RF electrical circuit operable to deliver RF energy to the RF electrode. A return path of the ultrasonic electrical circuit and a return path of the RF electrical circuit pass through a shared electrically conductive element.

Abstract: A device for ablating target tissue of a patient with an ablative fluid is provided. An elongate shaft includes a proximal portion and a distal portion, and at least one fluid delivery element is attached to the distal portion. The device can be configured to ablate the duodenal mucosa of a patient while avoiding damage to the duodenal adventitial tissue. Systems and methods of treating target tissue are also provided.

Abstract: A device for outputting a drive signal to a surgical instrument, comprising a housing. The housing is internally provided with: a power supply module, comprising a power supply module (121) and a power supply circuit board (122) for providing a power supply; a main board (123); an ultrasonic energy circuit board (124) connected to the main board (123) for generating an ultrasonic drive signal; and a high-frequency electric energy circuit board connected to the main board (123) for generating a high-frequency electric drive signal, wherein the projection of the ultrasonic energy circuit board (124) and the projection of the high-frequency electric energy circuit board on the bottom surface of the housing at least partially overlap, and a shielding unit is provided outside the ultrasonic energy circuit board (124) and/or the high-frequency electric energy circuit board.

Abstract: In an example, an electrosurgical device includes a housing defining an interior bore. The electrosurgical device also includes a shaft telescopically moveable in the interior bore of the housing. The shaft includes an optical waveguide at a distal end of the shaft, and a smoke evacuation channel circumferentially surrounding the optical waveguide at the distal end of the shaft. The electrosurgical device also includes an electrosurgical electrode coupled to the shaft.

Abstract: A distal end assembly of a medical device comprising a clevis; a bushing at a proximal end of the clevis; an end effector pivotally connected to a distal end of the clevis; a distal actuator connected to the end effector; and a shaft connector. Translation of the distal actuator actuates the end effector. The bushing is within the shaft connector and rotatable relative to the shaft connector.

Abstract: A surgical system includes a robotic surgical system and a surgical instrument. The robotic surgical system includes at least one motor, at least one foot pedal, and a controller. The surgical instrument includes a pair of jaw members, a knife blade configured to cut tissue, and a drive assembly configured to cause the pair of jaw members to seal grasped tissue in response to actuation of the at least one foot pedal.

Abstract: A medical device includes an electrode shaft and an insulation tip. The electrode shaft is configured to deliver energy to a target site and includes an electrode shaft lumen configured to deliver fluid to the target site. The insulation tip is coupled to a distal tip of the electrode shaft. The insulation tip includes an insulation tip lumen fluidly connected to the electrode shaft lumen and configured to deliver fluid to the target site. The insulation tip covers an entirety of the distal tip of the electrode shaft.

Abstract: The present invention relates to a handpiece for electrosurgery, the handpiece allowing direction and length of a working rod to be freely controlled during surgery, and effectively suctioning and removing smog that has negative health effects and obstructs the field of view of operating surgeons.

Abstract: A system for improving location accuracy of a radiofrequency ablation procedure performed on a target nerve of a patient. The system includes a probe having an electrically insulated portion located at a proximal end and an exposed conductive portion for delivering energy to a target nerve located at a distal end. The system also includes an introducer for facilitating insertion of the distal end of the probe into the patient adjacent the target nerve. The exposed conductive portion of the probe is configured to extend past the distal end of the introducer during energy delivery to the target nerve. The system also includes a pharmacological agent for blocking nerve signal transmission along the target nerve and a fiducial marker configured for placement adjacent the target nerve. The fiducial marker is configured to be deployed from the introducer and the fiducial marker is disposed on an outer surface of the introducer.

Abstract: A radiofrequency (RF) generator for use in a tissue puncture system for puncturing a tissue in a body is disclosed. The RF generator includes an RF energy source to couple to an active electrode of an RF puncture device and to couple to a return electrode and a controller coupled to the RF energy source. The controller causes the RF energy source to generate each of a puncture signal and a test signal, the test signal having a lower power than the puncture signal, measures an impedance of the test signal, determine a state of the active electrode based on the impedance measurement, and displays the state on a display device.

Abstract: A percutaneous vascular access assembly for use with a radiofrequency (RF) energy source is disclosed. The percutaneous vascular access assembly includes an RF perforation instrument to be coupled to the RF energy source. The RF perforation instrument has an elongate shaft defining a longitudinally extending lumen and an instrument distal tip having an instrument electrode to deliver the RF energy. A puncture member is to be disposed within the lumen and extendable from the instrument distal tip. The puncture member is to be coupled to the RF energy source. The puncture member includes a puncture member distal tip having a puncture member electrode to deliver the RF energy.

Abstract: Provided herein are devices configured for tissue ablation having hollow inner conductors for distal tip sensing access. In particular, energy delivery devices are provided having one or more sensors (e.g., positioning sensors, temperature sensors) positioned outside the distal end of a hollow inner conductor (e.g., within a region configured for ablation energy emission). In certain embodiments, such devices are utilized in systems and methods for delivering energy to tissue for a wide variety of applications, including medical procedures (e.g., tissue ablation, resection, cautery, vascular thrombosis, treatment of cardiac arrhythmias and dysrhythmias, electrosurgery, tissue harvest, etc.).

Abstract: Methods, systems and devices for treating a patient include providing a tissue treatment element constructed and arranged to deliver energy to tissue and treating tissue of the gastrointestinal tract by causing the tissue treatment element to deliver energy to an energy delivery zone. Treatment results in a reduction in the luminal surface area of at least a portion of the gastrointestinal tract. In particular embodiments, the methods, systems and devices are used to treat diabetes.

Abstract: A radiofrequency perforation system for accessing a location in or near a patient's heart is disclosed. The system includes a radiofrequency puncture wire having a wire proximal portion and a wire distal portion including an electrically active distal tip. The system further includes an elongated catheter defining a lumen adapted to receive and allow longitudinal translation of the radiofrequency puncture wire therein, the elongated catheter having a proximal portion and a distal portion, the proximal portion including a hub and the distal portion including a distal tip. The distal tip of the elongated catheter includes an inner catheter liner layer, an intermediate flexible heat shielding layer, and an outer radiopaque layer.

Abstract: A steerable sheath is disclosed. The steerable sheath includes an elongate member, the elongate member having a proximal portion and a distal portion terminating in a deflectable distal tip. The steerable sheath further includes a handle having a handle proximal portion and a handle distal portion that is connected to the proximal portion of the elongate member. The handle of the steerable sheath includes a knob positioned at the distal portion of the handle; a slider running through a portion of the handle having a raised thread and an inverted thread; and a position ring located proximate a position indicator, wherein rotation of the knob acts upon the raised thread to cause a linear movement of the slider which acts upon the inverted thread to cause a rotational movement of the position ring.

Abstract: An electrosurgical device for use with a radiofrequency (RF) energy source to provide RF energy is disclosed. The electrosurgical device includes a delivery component having an elongate shaft having a distal portion and a proximal portion and forming a lumen. The distal portion includes a delivery component distal end. A crossing member is disposed within the lumen. The crossing member includes a crossing member distal tip extendable from the delivery component distal end to deliver the RF energy from the RF energy source. A handle is coupled to the proximal portion of the shaft. An actuator is coupled to the handle. The actuator extends the crossing member distal tip from the delivery component distal end and couples the RF energy source to the crossing member such that RF energy is delivered to the distal tip of the crossing member.

Abstract: A method for treating Chronic Obstructive Pulmonary Disease (COPD) or chronic bronchitis to alleviate the discomforts of breathing by using non-thermal electroporation energy to ablate diseased portions of the lung including the bronchus, airways and alveoli which, in effect, opens the restrictive diseased portions thereby maximizing the overall surface area thereof causing improved airflow and uninhibited breathing.

Abstract: An apparatus includes a catheter assembly and an end effector. The catheter assembly includes an outer sheath with a distal end. The end effector is associated with a distal end of the catheter assembly. The end effector includes a panel assembly with microelectrodes for electrophysiological (EP) mapping. The microelectrodes are configured in a matrix within the panel assembly and provide multiple points of contact with the target tissue for EP mapping. The panel assembly can transition between a first contracted state and a second expanded state. The panel assembly can fit within the outer sheath in the first state. The panel assembly can expand outwardly away from a longitudinal axis defined by the catheter assembly in the second state once exposed distally relative to the distal end of the outer sheath.

Abstract: A laser hair removal handle has: a water supply block, a hollow metal structural member, and a fast axis collimating lens. A laser is mounted at a transverse edge of the L-shaped water supply block, and the hollow metal structural member is mounted at a vertical edge of the L-shaped water supply block, so that diffuse reflection light formed after a laser irradiates the skin enters a cavity of the hollow metal structural member. Since the hollow metal structural member is made of a metal material, the energy of the diffuse reflection light is effectively absorbed, and the effect of the diffuse reflection light on the emitted laser is reduced. The laser emitted by the laser is collimated by using the fast axis collimating lens. Compared with an optical waveguide in the prior art, energy loss is lowered.