7994results about "Surgical needles" patented technology

The invention relates to the technical field of medical robot systems, and discloses a nerve plexus intelligent positioning anesthesia puncture robot system based on multi-modal fusion, which performs time-space synchronization on ultrasonic image flow and contact force data. The frequency domain analysis module extracts a main peak frequency by using optical flow field frequency domain transformation, and generates a probability mask for marking pulsatile tissues. The viscoelasticity verification module calculates phase lag parameters of visual deformation and contact force, identifies tissue rheological properties and calculates a dynamic damping coefficient. The deformation compensation module calculates a mechanical residual error based on a reference mechanical model, and inversely calculates the mechanical residual error into space deformation displacement of the tissue. The feedback control module combines the probability mask and the deformation displacement to generate a motion instruction. According to the invention, through multi-modal data fusion, precise identification of tiny blood vessels, dynamic identification of tissue attributes and real-time compensation of soft tissue conceding deformation are realized.

High-frequency irreversible electroporation (H-FIRE) is a tissue ablation modality employing bursts of electrical pulses in a positive phase-interphase delay-negative phase-interpulse delay pattern. Despite accumulating evidence suggesting the significance of these delays, their effects on therapeutic outcomes from clinically-relevant H-FIRE waveforms have not been studied extensively. The present invention provides methods of pulse delivery, including delays, that mitigate bubble formation and / or minimize the risk of arcing, such as due to the presence of bubbles, and / or minimize muscle stimulation are described herein.

The invention discloses a thoracoscope minimally invasive cardiac surgery navigation system based on multi-modal image fusion, and the system comprises the steps: constructing a 5D heart digital twin containing an anatomical structure, a soft tissue boundary, metabolic activity and electrophysiological information through fusing preoperative CT, MRI, PET and intraoperative ultrasonic images; real-time dynamic registration is realized by using an electrocardio gating driven biomechanical model; superposing the multi-color coding navigation information to the visual field of the thoracoscope through a wavelength selection type spectroscope; a dynamic risk scoring model is constructed based on the distance, the speed and the tissue vulnerability, and three-level grading intervention is triggered; a miniature force feedback actuator is integrated to realize closed-loop control; and pre-operation virtual drilling and post-operation federal learning optimization are supported. The system remarkably improves the surgical precision and safety, and is suitable for high-difficulty heart minimally invasive surgeries such as mitral valve repair and atrial fibrillation ablation.

The present application relates to a kind of snare cutting knives for endoscope, including proximal handle, tube body assembly, cutting assembly and limiting component;Proximal handle is equipped with limiting sliding slot;The proximal end of tube body assembly is connected with proximal handle, and the distal end of tube body assembly is equipped with insulating protection tube;Cutting assembly includes cutting ring and cutting head, and cutting head is set to the distal end of cutting ring;Limiting component includes sliding part and limiting control wire, sliding part is slidably arranged in limiting sliding slot, and the proximal end of limiting control wire is fixedly connected with sliding part, and sliding part is used to drive limiting control wire axial movement;When limiting control wire moves to the distal end of insulating protection tube, cutting head and insulating protection tube abut each other and are fixed;When limiting control wire exits insulating protection tube, cutting head can continue to move relative to insulating protection tube.

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 herein is a catheter, which in some embodiments includes a distal section configured to enter a skin insertion site. The distal section can include a tapered junction having one or more dilation structures configured to dilate the skin insertion site. The distal section can further include a distal portion extending from a distal end of the tapered junction, the distal portion having a diameter smaller than a proximal portion of the catheter. In combination, the tapered junction, the one or more dilation structures, and the specific actions of the user urging the catheter into the insertion site can result in an improved fit of the catheter in the insertion site.

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.

The utility model discloses a stitching instrument for stitching an endoscope puncture hole. The stitching instrument comprises a handle part and two operating rods which are assembled on the handle part in a rotatable structure, the lower ends of the two operating rods are respectively provided with a convex needle connecting part, and the lower ends of the two operating rods extend out of the guide cylinder of the handle part; in the rotating action of the two operating rods, the needle connecting parts at the lower ends of the two operating rods are folded or unfolded; when the needle connecting parts of the two operating rods are in a folded state, the guide cylinder located at the handle part is in an axial storage coverage range of a trocar channel through which the guide cylinder needs to penetrate during surgical operation; the lower end of each operating rod is provided with a needle mounting base formed in an outward protruding mode, the needle mounting bases are connected with suture needles through detachable structures, and the suture needles are connected to the needle mounting bases in place to form an inflection assembly structure facing the handle part. According to the stitching instrument, the stitching operation is simplified, the stitching safety, flexibility and efficiency are improved, the forming structure of the stitching instrument is simplified, and the practicability is higher.

An intracorporeal robot (1) for deployment in a body tract, comprising: - a permanent magnet constituting an effector magnet (2) configured to be guided by an extracorporeal actuating magnet (105), and - a medical device (3) coupled to the effector magnet, the medical device comprising a shape memory structure (4) configured for tetherless actuation by an extracorporeal shape memory actuator (105).

An intraosseous access system includes an intraosseous driver having socket configured to receive a shaft of an obturator assembly. An O-ring disposed within a groove of the shaft inhibits removal of the shaft from the socket. The O-ring can be compressed within the groove to define a frictional force between the socket and the shaft. The socket can include recesses and the O-ring may expand into the recesses to inhibit removal of the shaft from the socket. The driver can include a latch mechanism configured to selectively prevent removal of the shaft and allow removal of the shaft. An adapter can be positioned between the driver and obturator assembly where the adapter includes the latch mechanism. The latch mechanism include an actuator to selectively transition the latch mechanism between a retaining state and a releasing state.

The present embodiments relate generally to systems and methods for measuring an analyte in a host. More particularly, the present embodiments provide sensor applicators and methods of use to insert the sensor into an individual's skin. Applicators are disclosed for inserting the sensor. Such applicators may be reusable applicators configured to implant multiple different sensors.

The invention relates to the technical field of flexible needle puncture path planning and dynamic obstacle avoidance, in particular to a flexible needle dynamic obstacle avoidance path planning method based on improved BINN and optimized MOPSO, and the method comprises the steps: obtaining a to-be-punctured part, initializing a puncture environment, and updating environment parameters in the puncture environment; determining whether a fixed obstacle exists in the current puncture path of the flexible needle or not based on the environmental parameters, and if yes, adopting optimization MOPSO to avoid the fixed obstacle, and determining a global optimal path; judging whether a moving obstacle exists in the global optimal path or not, if yes, improving the BINN, avoiding the moving obstacle, and outputting a final puncture path; through combination of a multi-target particle swarm optimization algorithm and an improved biologically inspired neural network algorithm, namely combination of MOPSO for preoperative global path planning and BINN for intra-operative local planning, the advantages of comprehensiveness of preoperative planning and real-time performance of intra-operative planning are brought into full play, and efficient and accurate percutaneous puncture with dynamic obstacle avoidance capability is realized.

The invention discloses a breast surgery puncture positioning system, which relates to the technical field of image positioning, and is characterized in that a preoperative medical image and an intraoperative ultrasonic image of a patient are acquired to generate a three-dimensional model, an optimal puncture path is planned by receiving a needle insertion point of a user, and the spatial pose of a puncture needle is tracked; the optimal puncture path and the position and posture of the puncture needle are displayed on the real-time ultrasonic image in an overlapped mode, real-time deviation is calculated, the puncture needle is guided and adjusted to the target focus, and real-time compensation is carried out based on the respiratory signal and / or the displacement of the reference datum. Through the multi-modal image fusion and real-time dynamic tracking technology, the puncture precision and hit rate are remarkably improved, meanwhile, the system intelligently plans a safe path and provides an AR navigation interface, the operation difficulty and dependence on doctor experience are greatly reduced, physiological displacement interference is overcome through respiratory gating and a motion compensation mechanism, and the system has the advantages of being high in accuracy and high in reliability. Accuracy and reliability in the whole operation process are guaranteed, and finally standardized and safe mammary gland puncture diagnosis and treatment operation is achieved.

The embodiments of the present specification provide a clip device. The clip device comprises a sheath, a clip arm and a receiving tube, the receiving tube is releasably connected with the sheath, the clip arm comprises at least two clamping parts, the proximal ends of the at least two clamping parts are movably arranged in the receiving tube, the clip arm is opened when the clip arm moves distally relative to the receiving tube, the clip arm is closed when the clip arm moves proximally relative to the receiving tube, and the receiving tube is further used for locking the clip arm.

The invention provides a puncture guiding device and method for an intelligent diagnosis and treatment system and the intelligent diagnosis and treatment system, and belongs to the technical field of intelligent medical treatment, and the puncture guiding device comprises a focus and puncture parameter determining module which is used for determining a focus area and puncture parameters of a target part; the path planning module is used for planning a motion path of the puncture driving component based on the focus area and the puncture parameters and outputting the motion path; the receiving module is used for receiving the real-time monitoring information in the puncture process of the puncture needle on the target part; the displacement determination module is used for determining the displacement of the focus area based on the real-time monitoring information; and the dynamic adjusting module is used for dynamically adjusting the motion path of the puncture driving part based on the displacement and outputting the adjusted motion path. The movement path of the puncture driving component is dynamically adjusted by monitoring the displacement of the focus area and the state of the puncture driving component in real time, so that the puncture process can adapt to the dynamic change of the target part.

The utility model relates to the technical field of surgical robots, and discloses a trocar mounting mechanism and a surgical robot. The trocar installation mechanism comprises an installation assembly, an adapter shell and an operation assembly. The mounting assembly is provided with a mounting end; a detection piece is arranged in the adapter shell, and clamping pieces capable of clamping the mounting end are arranged on the two sides of the mounting end respectively; the operation assembly comprises a handle, a connecting piece and pushing pieces, the handle and the pushing pieces are connected to the connecting piece, the pushing pieces are arranged on the two sides of the detection piece respectively, the two pushing pieces and the connecting piece define an avoiding space for containing the detection piece, and the connecting piece is movably connected with the adapter shell; and the two pushing pieces can be far away from the corresponding clamping pieces or push the corresponding clamping pieces to be far away from the mounting end. The structural arrangement of the pushing piece and the connecting piece can avoid the detection piece, the structure of the trocar mounting mechanism is simplified, production and processing are facilitated, the number of fingers occupied by an operator in the trocar dismounting and mounting process is reduced, and the operation process is simplified.

Systems and methods are provided for modeling and for providing a graphical representation of tissue heating and electric field distributions for medical treatment devices that apply electrical treatment energy through one or a plurality of electrodes. In embodiments, methods comprise: providing one or more parameters of a treatment protocol for delivering one or more electrical pulses to tissue through a plurality of electrodes; modeling electric and heat distribution in the tissue based on the parameters; and displaying a graphical representation of the modeled electric and heat distribution. In another embodiment, a treatment planning module is adapted to generate an estimated target ablation zone based on a combination of one or more parameters for an irreversible electroporation protocol and one or more tissue-specific conductivity parameters.

The invention relates to the field of suturing systems of medical instruments, and discloses a suturing system. The suturing system includes a control handle, a tube, a receiving cartridge, and a needle. The control handle comprises a shell, a driving mechanism and a rotation indicating piece, the rotation indicating piece is rotatably connected to the shell, and a plurality of position marks are arranged on the periphery of the shell. An actuating shaft in the driving mechanism is coupled to a first gear, an actuating pipe is coupled to a second gear, and the first gear and the second gear are arranged in the longitudinal direction and rotate synchronously. When the rack moves longitudinally, the conversion gear can be driven to rotate so as to drive the first gear to rotate, and the first gear and the second gear respectively drive the actuating shaft and the actuating tube to do longitudinal reciprocating motion, so that the needle is alternately combined with the actuating tube and the receiving bin. The driving mechanism in the sewing system is reliable in structure, and the failure rate can be effectively reduced. In addition, the rotation indicating piece is used in cooperation with a position mark arranged on the shell so that the positions of the shell and the driving mechanism after rotation can be indicated, and operation is convenient.

The invention discloses a shapeable surgical instrument with a locking device, relates to the technical field of medical instruments, and is particularly suitable for single-port endoscopic surgery. The device comprises an outer rod assembly, an inner rod assembly and a handle assembly, the outer rod can be shaped into any continuous space curve by hands and keep the shape, and the problems that a traditional straight rod instrument cannot reach a narrow operation area, and a pre-bending instrument cannot be shaped secondarily are solved. The inner rod is a flexible force transmission element, the far end is connected with the tong head assembly, and the near end is connected with the handle assembly through a detachable locking device. The locking device drives a radial movable block (a sphere or a cylinder) to clamp the inner rod through an axial movable block, so that quick disassembly and assembly are realized; and the tong head can be synchronously driven to rotate (through the rotating wheel) and open and close (through the rear handle) in cooperation with the handle assembly. According to the design, the instrument is divided into three independent parts, namely the handle, the outer rod and the inner rod, an inner hole of the outer rod is thoroughly exposed, the problem that postoperative cleaning and sterilization are not thorough is solved, and the infection risk is reduced.

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.

The invention relates to the technical field of medical instruments, discloses a surgical instrument, and particularly relates to a shapeable surgical instrument suitable for single-port endoscopic surgery, which comprises an inner rod assembly, an outer rod assembly and a handle assembly. The outer rod assembly is made of annealed metal (such as pure copper or copper alloy), can be shaped by hands and is kept in a bent form; the inner rod is a nickel-titanium alloy multifilament or a stranded rope, and low-resistance rotation in a bending state is achieved. The handle rotating wheel drives the inner rod to rotate and is matched with the axial push-pull of the rear handle, so that the 360-degree real-time angle adjustment and opening and closing actions of the working part (forceps piece / scissors) are controlled by a single hand, and the forceps piece / scissors do not need to be taken out of a body. The problems that a traditional straight rod instrument cannot reach a narrow area, a pre-bending instrument cannot be adjusted in an operation, and an existing shaping instrument needs in-vitro angle adjustment of two hands are solved, the operation efficiency is improved, and the cleaning and sterilizing time is shortened.

The present disclosure relates to a vascular closure device adapted for use in closing a puncture in a blood vessel after e.g. a percutaneous interventional procedure. The disclosure also relates to a method for vascular closure using such a vascular closure device.

The invention discloses a puncture assisting device for an anesthesia puncture bag, and belongs to the field of puncture assisting. Comprising lifting clamping mechanisms, and the number of the lifting clamping mechanisms is two. A guide mechanism is arranged between the two lifting clamping mechanisms; a puncture mechanism is arranged on the front surface of the guide mechanism; a puncture needle body is arranged on the inner side of the puncture mechanism; the puncturing mechanism comprises a protective cylinder, a through lifting groove is formed in the left side of the protective cylinder, and the inner side of the lifting groove is rotationally connected with a lead screw through a rotating shaft; in the aspect of clamping and fixing, the lifting clamping mechanism can flexibly select a vertical clamping mode or a transverse clamping mode according to different bed body edge structures, the stable and firm clamping effect is achieved in the clamping process through a positioning rod, an adjusting bolt and other components, a firm foundation support is provided for the whole puncture operation, and the puncture safety is improved. And the puncture adjusting distance is not shortened in order to change the clamping mode.

The invention discloses a neurosurgical operation navigation method which comprises the following steps: performing three-dimensional reconstruction according to brain image data of a patient to obtain an initial brain three-dimensional model, and planning a target operation path; obtaining a two-dimensional ultrasonic image collected by an ultrasonic tool and position information of the ultrasonic tool, and performing reconstruction to generate a three-dimensional ultrasonic image; correcting the initial brain three-dimensional model according to the three-dimensional ultrasonic image to obtain a corrected brain three-dimensional model; in the puncture operation process, real-time advancing position information and a real-time intracerebral image of the endoscope positioning guide wire tool are obtained in real time, and a navigation image is generated in combination with the corrected brain three-dimensional model; and displaying a navigation image, and indicating a position relationship between the real-time advancing position and the target surgical path, so as to navigate the surgical operation process. According to the technical scheme provided by the invention, the puncture operation process of the neurosurgery can be navigated more accurately and perfectly, and meanwhile, the influence of brain drift on the navigation accuracy can be avoided.

Devices, systems, and methods for causing retrograde oxygenated blood flow in at least a portion of the venous system of the myocardium are disclosed. Devices and methods include a method for causing retrograde oxygenated blood flow in at least a portion of the venous system of the myocardium, the method comprising: implanting a variable occluder in a coronary sinus region proximate a left atrium, wherein the variable occluder is configured to gradually increase a level of blood flow restriction over a period of days to enable a venous system of the myocardium to compensate for increased pressure caused by the gradual increase in the level of blood flow restriction; and following venous system compensation, shunting oxygenated blood flow into the coronary sinus to cause retrograde flow of oxygenated blood in at least a portion of the venous system of the myocardium to thereby enable revascularization of the myocardium.

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.

The invention relates to the technical field of temperature control, in particular to a multi-dimensional compensation ablation system temperature control system, method and device and a medium. The system calculates a medium texture index representing the structural change of the load medium by synchronously acquiring electrical parameters and ultrasonic image data; constructing an anti-interference control model comprising an extended state observer, and defining energy transmission loss caused by contact thermal resistance as an extended state variable; calculating an adaptive correction factor based on the texture index, dynamically correcting the state updating process of the observer to obtain an energy loss correction estimated value, and constructing a compensation control model to adjust the output power according to the energy loss correction estimated value; according to the invention, the technical problem of incomplete heating caused by false high temperature of the sensor and system misjudgment due to state deterioration of the contact interface is effectively solved; accurate reconstruction and closed-loop compensation of effective heat flow in a non-ideal contact environment are realized, sufficient energy penetration can still be maintained even if contact thermal resistance is sharply increased, and the integrity of an ablation area is guaranteed.

A disclosure relates to methods and apparatus for processing an elongated body for a medical instrument. In one arrangement, targeted processing is applied to each of one or more local portions of the elongated body to cause a change in a room temperature magnetic property of material in each local portion, thereby causing the one or more local portions to have different room temperature magnetic properties than other portions of the elongated body.

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.

The invention discloses a minimally invasive surgical instrument, and belongs to the technical field of medical instruments, the minimally invasive surgical instrument comprises a tail end tool, an operating part, a power transmission part and a connecting part, the connecting part comprises a linear part connected with the tail end tool, a bending part connected with the operating part and a spherical pair mechanism used for connecting the linear part and the bending part; the inner side of the spherical pair mechanism is provided with an inner path for smooth transition of a jaw wire, the spherical pair mechanism is provided with a rotary limiting shaft and a locking assembly, the rotary limiting shaft is configured to enable the bent part to do pitching rotation action relative to the linear part, the locking assembly comprises a locking unit and a control unit, and the locking unit is configured to provide locking force for the spherical pair mechanism. The control unit is a locking wire for connecting the locking unit and the locking operation part, and the locking operation part is reversely interlocked with the spherical pair mechanism. By adjusting the angle between the linear part and the bent part, the wrist of a doctor is located at a comfortable moving position, so that the flexibility of the wrist in the operation process is improved, and the fatigue feeling of the doctor is reduced.