2612results about "Cannulas" patented technology

The present invention discloses a multi-functional bionic nasal irrigator, comprising a base, wherein a water pump for pumping water is arranged in the base, a key panel is arranged on an outer surface of the base, and a water pump water outlet pipe orifice connected to the water pump is arranged at the top of the base. A water-mist spray nozzle device and a water-column spray nozzle device that can be flexibly switched and mounted are designed on the base, main motor power is automatically adjusted according to assembling of different spray nozzle devices, the base is connected to the water-mist spray nozzle device and the water-column spray nozzle device both by clamping, and a diameter of a mist point water outlet hole of an atomization sheet is reduced to 0.15-0.26 mm, so that water mist sprayed has a smaller particle size.

Systems and methods are provided for insertion of a medical device into a blood vessel. The system may include a sheath assembly with an introducer sheath and a variable size repositioning sheath. The variable size repositioning sheath may be configured to be adjustable in size in a radial direction and to be inserted into the blood vessel or an expandable introducer sheath. In some aspects, the system may include an intracardiac device such as a blood pump with an elongate catheter.

A nasal irrigation device that includes a receptacle and a top that is selectively connectable to the receptacle, where the top includes a nozzle that is selectively rotatable to the receptacle, the nozzle including a finger placement area and a projection circumferentially located away from the finger placement area, the finger placement area and the projection being configured to facilitate rotation of the nozzle. Related processes of using and making such devices.

A tissue resection apparatus is provided which includes an outer tube with a helical coil disposed on a distal end. The coil is provided with a first electrode. A central tube has a distal edge profile comprising one or more surface segments. One of the surface segments includes a second electrode. The central tube is slidably disposed within the outer tube and positioned such that second electrode opposes at least a portion of the first electrode. A cutting tube is slidably disposed within the central tube and includes a cutting edge.

The invention provides a combined debridement nursing device for an operating room, and belongs to the technical field of debridement devices. Comprising a flushing handle, one end of the flushing handle is fixedly connected with a flushing assembly, the flushing assembly is used for assisting in wound cleaning, and the flushing assembly is connected with the flushing handle; and the suction assembly is used for extracting liquid and foreign matters in the wound, and the suction assembly is connected with the flushing assembly. By arranging the flushing assembly and the suction assembly, the flushing assembly and the suction assembly are arranged on the flushing gun and the suction pipe correspondingly, the flushing assembly can avoid direct contact between a flushing head and a wound surface and improve the debridement efficiency, necrotic tissue can be conveniently removed in the debridement process, and therefore the flushing head can treat the wound surface more conveniently; the suction assembly can be used in combination with the flushing gun and can be independently used, blockage can be effectively prevented, and the debridement efficiency is improved.

An expandable introducer sheath with an interlock dilator. The present technology provides an expandable sheath with a step feature inside its distal opening, and a dilator with an interlock that includes a catch surface configured to engage with the step feature and resist further relative movement so that the body of the dilator is prevented from exiting the distal end of the expandable sheath. This interlocking engagement may allow the dilator to be used to extend and maintain tension on the expandable sheath during insertion into a patient, and then to be retracted from the expandable sheath by pulling the dilator in the opposite direction. The present technology also provides a dilator hub with a spring mechanism configured to achieve and maintain a desired tension on the expandable sheath and to prevent overextension of the expandable sheath when the dilator is being inserted into the expandable sheath.

An introducer sheath is described. The introducer sheath may include a tubular body. The tubular body may extend from a distal end toward a proximal end. The tubular body may include a lumen. The lumen may at least partially be defined by a wall. A channel may be disposed within the wall. The channel may be configured to receive a guidewire. The tubular body may include an expandable portion expandable to increase a cross-sectional area of the lumen.

A blood pump assembly includes an introducer sheath with a proximal end and a distal end, a pump body which extends within the introducer sheath, and a catheter that interfaces with the pump body and extends proximally though the introducer sheath. In a rest state, the introducer sheath forms an oval cross-section sized to encompass the catheter and a medical device. In a constrained state when the pump body is within the introducer sheath, the cross-section of the introducer sheath is circular. The malleability of the introducer sheath allows larger medical devices to be passed through the introducer sheath, while still allowing other devices to be inserted through the introducer sheath after the pump has been guided through. A perimeter of oval cross-section of the introducer sheath is equal to the perimeter of the circular cross-section of the introducer sheath.

Disclosed embodiments include apparatuses, systems, and methods for controlling advancement of a needle deployed through a control system. In an illustrative embodiment, a needle actuator is configured to be fixably coupled to a proximal end of a needle. A first release device is movably coupled to the needle actuator and is engageable to release the needle actuator to move from a retracted position to a ready position where the distal end of the needle is adjacent the distal end of the sheath. A second release device is movably coupled to the needle actuator and is engageable to release the needle actuator to move from the ready position to a sampling position where the distal end of the needle is advanceable into tissue to be sampled.

Disclosed herein are apparatuses, systems, kits, and methods for treating skin, such as skin tightening or for treating diseases, disorders, and conditions that would benefit from tissue area or volume reduction, skin restoration, skin tightening, skin lifting, and / or skin repositioning and / or for generally improving skin function or appearance (e.g., the removal of unwanted skin features or irregularities such as sebaceous glands, sweat glands, hair follicles, necrosis, and fibrosis). Such apparatuses, systems, kits, and methods comprise an apparatus having a handheld main body and a detachably attachable tip comprising one or more needles.

Disclosed embodiments include apparatuses, systems, and methods for controlling advancement of a needle deployed through a control system. In an illustrative embodiment, a needle actuator is configured to be fixably coupled to a proximal end of a needle. A first release device is movably coupled to the needle actuator and is engageable to release the needle actuator to move from a retracted position to a ready position where the distal end of the needle is adjacent the distal end of the sheath. A second release device is movably coupled to the needle actuator and is engageable to release the needle actuator to move from the ready position to a sampling position where the distal end of the needle is advanceable into tissue to be sampled.

A cannula system and method for tissue repair includes a cannula defining a central lumen and a divider removably coupled to the cannula. The divider has a divider shaft to separate the central lumen into at least two discrete working channels.

Provided is a multifunctional connector. The multifunctional connector includes an auxiliary conduit which is branched from a main conduit and has a guide portion; and an operation member provided detachably from the auxiliary conduit, wherein the operation member includes an intubation portion inserted into the auxiliary conduit; sliding guide formed to move forward and backward while being guided by the guide portion; a fixing cap fixing the sliding guide so as not to be separated from the guide portion; and a first port through which a fluid is injected or discharged, thereby improving the efficiency of treatment, mitigating the fatigue of medical staffs, and reducing contamination of affected areas and a risk of damage to tissues around an endoscope.

The invention discloses a wound flushing device for orthopedic nursing. The wound flushing device comprises a flushing frame; the flushing assembly is arranged on the inner side of the flushing frame; the driving part is arranged on the inner wall of the flushing frame and is in transmission connection with the flushing assembly; the device further comprises an adjusting mechanism. The adjusting mechanism comprises an adjusting assembly arranged on the inner side of the flushing assembly; the adjusting assembly rotates on the inner side of the flushing assembly around the axis of the adjusting assembly. A transmission assembly is further installed on the flushing assembly, and the transmission assembly is in meshing transmission with the adjusting assembly. According to the orthopedic wound flushing device, aiming at the defects of an existing orthopedic wound flushing tool, an automatic flushing device is adopted to replace an operation mode of a traditional handheld flusher, the device can achieve comprehensive flushing in the circumferential direction, it is guaranteed that all parts of wounds of the four limbs can be effectively cleaned, and meanwhile, the wound flushing device can be used for flushing the wounds of the four limbs. Corresponding areas can be flushed flexibly and selectively according to specific positions of wounds of four limbs of a patient.

The invention relates to a debridement nursing device in operating room nursing, belongs to the technical field of surgical operating instruments, and aims to solve the problems that a hose of a traditional flushing device is easy to block, needs to be manually disassembled for cleaning or increasing water pressure, is easy to damage tissues and interrupts an operation flow. Pressurizing assemblies are fixedly connected in the two air pressure adjusting cavity assemblies, ejector rod assemblies are connected in the two air pressure adjusting cavity assemblies, automatic detection and dredging of hose blockage are achieved through linkage of the air pressure adjusting cavity assemblies, the pressurizing assemblies and the ejector rod assemblies, when a hose liquid outlet is blocked, an electromagnetic valve switches an air source, and the hose liquid outlet is blocked. The extrusion action is matched with the high-speed flushing fluid to generate shearing force, attachments in the tube are stripped, and the situation that an operation is interrupted due to manual intervention is avoided.

Disclosed embodiments include apparatuses, systems, and methods for engaging a stylet within a needle. In an illustrative embodiment, an apparatus includes a stylet configured to be insertable into a lumen of a needle via a proximal port of secured to a needle actuator secured to the needle; and an end cap fixably coupled to the stylet and configured to cover a proximal end of the needle actuator and to be movable relative to the needle actuator to enable an operator to withdraw the stylet from the lumen.

The present invention discloses a puncture device and system with a hematoma monitoring function, which relates to the technical field of biomedical engineering. The device includes: an epidural puncture needle, including a needle body and a needle hub; an epidural catheter for entering the epidural space through the epidural puncture needle; the front end of the epidural catheter is an insertion section, which is longitudinally inserted along the epidural space after entering the epidural space, and an impedance measurement structure is provided corresponding to the insertion section for measuring the impedance value around the insertion section and transmitting it to an impedance analyzer; the impedance analyzer is used to receive the aforementioned impedance value and evaluate whether there is a hematoma in the epidural space according to the change information of the impedance. The present invention can sensitively, timely and accurately identify the occurrence and development risks of epidural hematoma, thereby helping to improve the quality of clinical medical safety and improve the perioperative prognosis of patients.

The invention relates to the technical field of medical apparatus and instruments, in particular to a pressure sensing ureter guiding sheath which comprises a flexible sheath tube body provided with a near-end operation section and a far-end intervention section. The annular pressure sensing array is formed by equidistantly arranging a plurality of piezoresistive sensors along the circumferential direction of the far-end intervention section, and is used for monitoring the ureter wall contact pressure in real time; the signal processing module is integrated on the near-end operation section and is used for carrying out dynamic noise filtering and baseline calibration on the pressure signals from the annular pressure sensing array; and the display screen is connected to the signal processing module and is used for displaying the pressure distribution of the annular pressure sensing array in real time. The scheme is used for solving the problem of mechanical trauma caused by inappropriate size selection, pathological or physiological stenosis and the like in the sheathing canal implantation process in the prior art, and real-time monitoring and dynamic adjustment of the ureter wall contact pressure are realized, so that the surgical risk is reduced, and the surgical success rate is improved.

A system for performing minimally invasive procedures in a body lumen of a patient including a flexible catheter having a first lumen configured and dimensioned to receive an endoscope therethrough and a second lumen configured and dimensioned to receive a first flexible tube therethrough. The first flexible tube is movable through the second lumen and has a distal portion including a first curve extending in a first direction with respect to the longitudinal axis and a second curve extending in a second different direction with respect to the longitudinal axis. A retractor system is positioned at a distal portion of the catheter and is movable from a non-expanded insertion position to an expanded position forming an expanded cage to form a larger working space. The distal portion of the first flexible tube is movable within the expanded cage.

A tele-endoscopy system and method enable low-cost hand-held endoscopes to be used both (i) when linked so that a local endoscope controls a remote endoscope and (ii) individually so that a remote endoscope can carry out or continue a procedure even if the link to the remote endoscope degrades or there is no link. The system fills a gap between expensive telesurgery that critically depend on a high quality communication link and individually used endoscopes and is particularly intuitive and user-friendly.

A surgical instrument kit for spinal fusion. The instrument kit includes a curved trocar (10), a flexible cannula (30) for positioning over the curved trocar, a flexible rasp device (70), and a bone graft delivery container (90).

The intelligent gynecological flushing system comprises a gynecological flushing platform, a colposcope image guiding system, a self-adaptive flushing execution system and an evaluation feedback optimization system, and the gynecological flushing platform is used for supporting a patient to conduct gynecological flushing; the colposcope image guiding system is used for collecting colposcope image data, identifying lesion characteristics based on an image identification technology, and transmitting an identification result to the self-adaptive flushing execution system; the self-adaptive flushing execution system is used for carrying out self-adaptive gynecological flushing on the focus part by utilizing flushing fluid according to the guidance of the colposcope image guidance system and based on the basic information of the patient; and the evaluation feedback optimization system is used for collecting the components of the flushing fluid after flushing and the reaction of the flushing part, performing quantitative evaluation on the flushing effect, feeding back the evaluation result to the self-adaptive flushing execution system, and optimizing the self-adaptive flushing parameters of the self-adaptive flushing execution system. According to the invention, the stability and accuracy of the flushing process can be ensured.

The invention relates to the technical field of medical instruments, in particular to a tool and tong head structure with the head capable of being installed in a body of a minimally invasive surgical instrument. The invention provides a rod assembly and a forceps head for in-vivo installation of an instrument head, comprising an outer rod assembly, an inner rod assembly, a base assembly, a sleeve assembly and a forceps head assembly, the sleeve assembly comprising a sleeve, the base assembly comprising a first base and a base pin mounted on the first base, the sleeve assembly is installed on the first base through a base pin, and the sleeve assembly can rotate along the base pin under the push-pull movement in the axial direction of the inner rod assembly, that is, the axis of the sleeve assembly and the axis of the outer rod assembly form an included angle or are parallel.

The present disclosure relates to a cannula and an enema composition for rectal administration via the cannula, particularly a liquid enema composition that forms a gel at body temperature. The cannula and enema are suitable for use in the treatment of ulcerative colitis, particularly distal ulcerative colitis (including proctitis and proctosigmoiditis).

The present invention relates generally to implants and tools for the fixation or fusion of joints or bone segments. These tools include tissue dilators and protectors. Other tools include broaches used to shape bores in bone. The tools can also include a system for removing an implant from bone. Implants can include assemblies of one or more implant structures that make possible the achievement of diverse interventions involving the fusion and / or stabilization of lumbar and sacral vertebra in a non-invasive manner, with minimal incision, and without the necessitating the removing the intervertebral disc. Implants for fusing both sacroiliac joints of a patient include a long implant that extends across both sacroiliac joints.

Disclosed embodiments include apparatuses, systems, and methods for preventing buckling of an elongated instrument as it is advanced through a channel. In an illustrative embodiment, an apparatus includes an anti-buckling device including at least one movable support bracket. The bracket includes a generally planar member having an inner orifice and an outer edge configured to movably engage an inner surface of a channel. The planar member is configured to provide lateral support to an elongated instrument chosen from one of a needle and a probe responsive to the elongated instrument being motivated through the channel by an actuator. The at least one bracket also includes a positioning member that extends from the planar member. The positioning member is configured to prevent the planar member from twisting within the channel. The positioning member is configured to move relative to a distal end of the actuator so as not to impede movement of the actuator.

An extremely-miniature surgical operation instrument belongs to the field of medical instruments and comprises an outer rod component, a forceps head component and an outer tube inner pull rod, the outer rod component and the forceps head component can be detached from each other, and the outer tube inner pull rod is mounted in the outer rod component in a penetrating manner. The forceps head is driven to be opened or closed under the mechanical movement of the forceps seat inner pull rod, the outer rod assembly and the forceps seat are detachably installed, the outer inner pull rod and the forceps seat inner pull rod are detachably installed, the outer rod assembly comprises a first outer pipe and a reinforcing pipe embedded in the first outer pipe, and the reinforcing pipe is connected with the first outer pipe. The rigidity and the toughness of the micro-rod instrument are considered through the combination of the reinforcing tube and the outer tube.

The invention discloses a local oxygen therapy, flushing and skin stretching device for chronic wound treatment, and relates to the technical field of medical apparatuses and instruments, the local oxygen therapy, flushing and skin stretching device comprises a stretching disc, and a cleaning device is arranged in the middle of the stretching disc; according to the device, breakthrough is achieved through the combination of the circular structure of the stretching disc and the circumferentially-distributed T-shaped sliding racks; the circular geometric structure of the stretching disc has stress symmetry, and stretching force can be evenly dispersed; the position of the T-shaped sliding rack installed in a circumferential sliding mode can be flexibly adjusted in the radial direction of the stretching disc, and six or more stretching points can be set at will according to the boundary of the wound surface in cooperation with the sliding block and the T-shaped hook frame which can slide. For example, for an irregular polygonal wound surface of a diabetic foot, a medical worker can mark six stress balance points on the T-shaped sliding rack and fix the hook, synchronous or independent adjustment of multiple distraction points is achieved through linkage of the rotating gear ring and the multiple sets of gears, and the situation that skin ischemia blister is caused by too large local stress or tissue stretching is affected by insufficient stress is avoided.

An apparatus for attaching a cannula to a robotic surgical system, the apparatus comprising: a first clamp component configured to transition between an open position and a closed position; a second clamp component spaced from the first clamp component, the first and second clamp components defining a region configured to receive a portion of the cannula and configured to retain the portion of the cannula in the region when the first clamp component is in the closed position; and a locking component configured to lock the first clamp component in the open position and allow the first clamp component to automatically transition to the closed position based on a position of the portion of the cannula within the region.

Improved methods and devices for performing an endoscopic surgery including a system for performing minimally invasive procedures including a flexible catheter having a first lumen, a first flexible tube positioned in the first lumen, and a second flexible tube positioned in the first lumen. The first lumen defines a first space configured and dimensioned to receive an endoscope. The first flexible tube and second flexible tube are fixed at a proximal portion and configured to float within the first lumen of the catheter. First and second flexible guides are slidably positioned within the first and second flexible tubes and dimensioned to receive a first instrument for axial movement therein, the first and second flexible guides movable to an angled position with respect to a longitudinal axis. A working space expanding system positioned at a distal portion of the flexible catheter, the working space expanding system movable from a non-expanded insertion position to an expanded position forming an expanded region to expand the working space within the body lumen.