23results about How to "Avoid trauma" patented technology

The utility model discloses a one-way flap type percutaneous nephroscope calculus removing device which comprises a working sheath and a cylinder calculus removing device, the cylinder calculus removing device is movably connected with the working sheath, the cylinder calculus removing device comprises a fence structure composed of an upper lantern ring, ribs and a lower lantern ring, the ribs are connected with the upper lantern ring, and the lower lantern ring is connected with the lower lantern ring. The inner wall of the bottom end of the cylindrical stone extractor is detachably connected with a valve piece assembly used for preventing stone fragments from returning into the kidney, by means of the cylindrical stone extractor, the front stone can be seen through an endoscope camera installed at the rear end of the cylindrical stone extractor, and therefore the stone extraction efficiency is improved. The fence-shaped hollow structure facilitates observation and drainage, it is guaranteed that stone fragments are locked once entering the cylindrical stone extractor, the stone fragments are prevented from backing back into the kidney, the situation that the operation time is prolonged and larger trauma is caused to a patient is avoided, and the cylindrical stone extractor has certain use value and popularization value.

The invention discloses an orthopedic surgery navigation positioning method and system based on three-dimensional registration, and belongs to the technical field of orthopedic surgery navigation. According to the method, through preoperative multi-modal image fusion reconstruction, intraoperative dynamic point cloud collection and an improved mixed registration algorithm, precise alignment of a preoperative model and an intraoperative actual skeleton is achieved, and by combining real-time error monitoring and dynamic compensation, precise positioning parameters of a surgical instrument are output to guide surgical operation; the system corresponds to the method and comprises an image acquisition module, a three-dimensional reconstruction module, a registration calculation module, a navigation guiding module, an error monitoring module and a control module, all the modules work cooperatively, and it is ensured that the navigation positioning precision is smaller than or equal to 0.3 mm, the registration time is smaller than or equal to 3.5 s, and the dynamic error compensation response time in the operation is smaller than or equal to 50 ms. The method does not need to depend on a physical marker, does not need a doctor to manually intervene the registration process, is high in anti-interference capability, is suitable for various orthopedic surgery scenes, effectively reduces the surgical risk, and improves the surgical efficiency and the standardization level.

This utility model discloses a connecting rod for edentulous robotic implant surgery, which includes an intraoral end, a middle part, and a connecting end; the intraoral end is configured to connect with the screw retention abutment of the implant; the middle part is constructed as a space avoidance structure to avoid the lips and / or nose; the connecting end is configured to detachably connect to the robot's tracking device; the technical solution provided by this application does not require printing a personalized registration plate or additional implantation of retention titanium screws, etc., and is simple to operate, which can effectively shorten the chairside operation time of preoperative preparation.

The invention discloses scalp hair follicle regeneration treatment equipment which comprises a hair follicle extractor and an extraction needle arranged at the outer position of the middle of the tail end of the lower side of the hair follicle extractor and used for extracting hair follicles, fixing rings are arranged at the outer position of the upper side of the extraction needle, and a spring is arranged at the inner position of the middle of the two fixing rings. An elastic pressing rod is arranged outside a triangle on the lower side of the fixing ring, a ball is arranged inside the tail end of the lower side of the elastic pressing rod, and when the ball of the elastic pressing rod presses the skin around the hair follicle, the skin can be smoother, and the hair follicle can be conveniently extracted through an extraction needle; therefore, the influence of the skin around the hair follicle on the extraction of the hair sample is avoided, and great trauma to the scalp of a patient due to the existence of wrinkles is also avoided. Meanwhile, the buffering effect of the spring can protect the scalp when the pressure is too large, and discomfort is avoided.

The invention discloses application of lauromacrogol in preparation of a medicine for treating nasal polyp, and belongs to the technical field of medicines. The invention discloses an application of lauromacrogol in preparation of a medicine for treating nasal polyp. When lauromacrogol is used for treating nasal polyp, the nasal polyp can be reduced, and clinical symptoms can be eliminated. According to clinical data statistics, the lauromacrogol is adopted to treat nasal polyp, the cure rate is 89.56%, the improvement rate is 10.44%, and no recurrent symptoms occur. The invention creatively provides a new application of lauromacrogol, and the lauromacrogol is used for preparing the medicine for treating nasal polyp, and is definite in effect, small in adverse reaction and worthy of popularization and application.

The embodiment of the application discloses a non-invasive drug injection system, a control method, a control device, equipment and a medium. The system comprises a control module, a non-invasive injection device and a pulse module; the pulse module comprises a pulse generator and a non-invasive pulse electrode sheet; the number of the non-invasive pulse electrode sheets comprises at least two; wherein the control module is connected with the non-invasive injection device and the pulse module respectively, and is used for issuing control instructions to the non-invasive injection device and the pulse module; the pulse generator is used for applying an electric field pulse to the injection area through the non-invasive pulse electrode sheet, and the electric field pulse is used for forming an injection channel in the injection area; and the non-invasive injection device is used for injecting a target drug into a preset injection position through the injection channel. The technical scheme disclosed in the embodiment of the application improves the safety and controllability of transdermal administration.

The utility model relates to intramedullary nail and robot opening protection sleeve, including fetching end, both ends of fetching end all set up in the inclined knock end, the lower symmetry fixed connection of knock end has two sleeves, the bottom of sleeve all is fixedly connected with the limit end, the inside of sleeve all is equipped with the through -hole, both ends of through -hole respectively penetrate the limit end and knock end, the bottom of limit end equidistance is equipped with fixed tooth, the outside of sleeve and located the outside of through -hole all equidistance are equipped with pinhole, one end of pinhole penetrates limit end and another end extends to the outside of sleeve. The utility model knock the knock end, the fixed tooth of sleeve bottom will stab into the bone of target position, then will kirschner wire hit into pinhole, to further fixed sleeve, then hit into internal fixation device in the net through -hole, compared with traditional device, the fixed tooth of this device inserts the bone structure when knocking, like this, can prevent the slipping condition between sleeve and bone structure, avoid the additional trauma of patient because of slipping.

The application relates to a navigation method, system, computer device, storage medium and computer program product. The method comprises the following steps: obtaining a target medical model, the target medical model being reconstructed based on an initial image scanned by a scanning device; generating operation planning information based on the target medical model; obtaining a real-time image scanned by the scanning device, and registering the real-time image with the target medical model to obtain a first registration relationship; obtaining a first coordinate relationship between a coordinate system corresponding to an execution tool and an image coordinate system of the real-time image; and navigating the execution tool based on the first coordinate relationship, the first registration relationship and the operation planning information. The method can model during operation, does not require preoperative CT, and realizes real-time registration without the need of adding additional markers.

The present invention relates to a semi-embedded housing and a stimulator, belonging to the technical field of full-head active implantable medical devices, and solves the problem that the implantation method of the stimulator in the prior art is highly traumatic and increases the risk of infection. The semi-embedded housing of the present invention comprises an upper shell and a lower shell, wherein the upper shell is fixedly connected to the lower shell to form a sealed or semi-sealed accommodating cavity, and the lower shell is stepped. The semi-embedded housing of the present invention enables the stimulator to be semi-embedded in the countersunk hole of the skull, thereby reducing surgical trauma and lowering surgical risks.

The utility model relates to a multi-electrode ablation needle and a pulse ablation instrument, and relates to the technical field of ablation. The multi-electrode ablation needle comprises the needle rod assembly, the needle rod assembly comprises the at least two electrode assemblies, and the separator is arranged between the two electrode assemblies to enable the two electrode assemblies to be insulated from each other, so that electroporation ablation of high-voltage discharge between the two electrode assemblies can be realized through one-time needle insertion; therefore, the number of inserted needles when a single electrode needle is adopted is reduced, wounds caused by multi-needle puncture are avoided, and the pain of a patient is reduced; and the needle rod assembly is provided with at least two electrode assemblies, so that the needle rod assembly does not need to be used together with other electrode needles during needle distribution, the influence of factors such as parallelism does not need to be considered, and the needle distribution difficulty is reduced.

The utility model discloses a kind of endodontic root canal therapy dilatation needle limiters, including handle, the upper end of the handle is fixedly connected with fixed ring, and fixed ring is fixedly connected with connecting rope on it, the lower end of the handle is fixedly connected with the body of being checked, and the upper end outside of the body of being checked is clamped with limit ring, the limit ring is fixedly connected with clamping block on it.The existence of limit ring can accurately limit the depth of the body of being checked into root canal, in the root canal treatment process, the root canal length of different teeth is different, by adjusting the position of limit ring, it can be ensured that the operation of dilatation needle in root canal is always in safe range, avoid excessive deep damage root apex tissue or beyond root canal cause unnecessary trauma, for molar and other root canal deeper teeth, limit ring can be adjusted to appropriate position, prevent dilatation needle from exceeding root apex hole in root canal preparation process, reduce the risk of occurrence of complications such as periapical periodontitis.

This invention discloses a fixation device for long bone fractures, belonging to the field of medical devices. It includes a limiting part, a base, elastic sutures, a reduction mesh sleeve, and a support adjustment rod. The limiting part is fixedly connected to the wall of the long bone shaft. The first end of the base is fixedly connected to the limiting part, and the second end of the base has an internally threaded hole extending towards the first end. The elastic suture extends from the second end of the base. Multiple elastic suture threading holes are discretely distributed on the reduction mesh sleeve. One side of the support adjustment rod is threadedly connected to the internally threaded hole, and the other side is fixedly connected to the reduction mesh sleeve. Multiple elastic sutures extending from the second end of the base pass through the fracture fragments at the bone ends and then fix the fracture fragments to the side of the reduction mesh sleeve facing the base via the aforementioned threading holes. This invention enables stable reduction of long bone fracture fragments, and only requires micro-holes for threading at the fracture ends, avoiding the trauma caused by numerous bone screw holes.

The present invention provides a rear suspension assembly lifting device. A rear suspension assembly lifting device includes a suspended balancing assist mechanism and an operating mechanism, wherein the operating mechanism includes a frame, a hook, a power mechanism, a screw rod, a slider and a lifting structure, wherein the hook is located at the top of the frame, and the bottom of the frame is connected to the balancing assist mechanism, the screw rod and the power mechanism are connected via a universal joint transmission, the slider is connected to the screw rod via an internal thread, the slider is hinged to the lifting structure, the lifting structure is hinged to the frame, and the slider moves on the screw rod to drive the lifting of the lifting structure. The present invention adopts an operating mechanism with an ingenious structure, which is convenient for the operator to operate the equipment more flexibly, has a strong ergonomic operation, and helps to reduce the fatigue intensity of the operating personnel.

The invention discloses a thyroid ultrasound image-based PTC molecular marker prediction method and device, and the method comprises the steps: collecting serum samples of a plurality of patients, and detecting the expression level of related molecular markers; thyroid ultrasound images of a plurality of patients are collected, feature extraction is carried out on the thyroid ultrasound images, and a plurality of image feature data of each thyroid ultrasound image are obtained; training a prediction model according to the obtained expression level of the molecular marker and the obtained image feature data; the prediction model is used for predicting the expression level of the molecular marker based on the image feature data; acquiring a thyroid ultrasound image of a patient to be detected, and performing feature extraction on the thyroid ultrasound image to obtain a plurality of image feature data of the patient; and inputting the image feature data into a prediction model, and predicting the expression level of the corresponding molecular marker by the prediction model. The prediction of the expression level of the molecular marker is realized by utilizing the prediction model based on the ultrasonic image features, the prediction is accurate, and wounds and complications of tissue biopsy are avoided.

An auxiliary device for proximal aortic anastomosis in coronary artery bypass grafting (CABG) includes a puncture needle, a puncture cannula, a cutting cannula, and a ring compressor. The puncture cannula is fitted over the puncture needle, with a bulging ball at its tip and an annular groove at its tail end. The ring compressor is fitted over the puncture cannula and can slide axially; its tip has a notched compression ring with an inner diameter smaller than the outer diameter of the bulging ball. During puncture, after the aorta is penetrated, the ring compressor is pressed down, and the compression ring and bulging ball work together to clamp the puncture site, achieving a bloodless procedure. The cutting cannula is then pressed down, and the aortic wall within the compression ring is removed. The graft vessel is then anastomosed to the aorta, with the suture passing through the compression ring. After suturing, the ring compressor is rotated, and the suture exits through the notch. The entire device is then withdrawn, and the suture is tightened and knotted to complete the anastomosis. This invention avoids aortic clamping, eliminates the risk of plaque dislodgement, requires only a single port for anastomosis, and is simple to operate with reliable hemostasis.

The utility model provides an implantable intracranial pressure, electroencephalogram and brain local blood oxygen monitoring electrode for animals, which comprises a main control module, a power supply module, and a signal acquisition module, an ADC amplification and light source driving module and a communication module which are connected with the main control module, and the power supply module supplies power to the signal acquisition module, the ADC amplification and light source driving module and the main control module; the signal acquisition module adopts an FPC (Flexible Printed Circuit) board, the FPC board carries eight electroencephalogram acquisition electrodes, a ZXPAYZ040AD invasive pressure sensor, an external bridge and an infrared blood oxygen detection circuit, and the infrared blood oxygen detection circuit is connected with the ADC amplification and light source driving module. According to the utility model, acquisition, processing and monitoring of various physiological signals such as electroencephalogram, blood oxygen concentration and intracranial pressure are integrated at the same time, and synchronous acquisition, data integration and real-time feedback of multiple signals are realized.

The present invention provides a screw fixation guide for femoral neck fractures, wherein the connection end of the anterior femoral fixation nail is connected to one end of a lateral midline positioning rod, the other end of the lateral midline positioning rod is provided with a first mounting hole, a first Kirschner wire parallel to the axis of the first mounting hole is inserted into the lateral midline positioning rod, one end of the longitudinal extension rod is in clearance with the first mounting hole, and is installed on the lateral midline positioning rod through a first tightening bolt, a second mounting hole perpendicular to the axis of the longitudinal extension rod is provided at the other end, the top end of the vertical connecting rod is in clearance with the second mounting hole, and is installed on the longitudinal extension rod through a second tightening bolt, and a guide sleeve perpendicular to the axis of the vertical connecting rod is provided at the bottom end. In the present invention, the anteversion angle and abduction angle are adjustable, which can meet the requirements of different neck-shaft angles, realize the requirements of wall fixation, and keep the abduction angle and anteversion angle fixed, so as to ensure that the three second Kirschner wires installed successively are parallel, so as to achieve precise positioning.

The utility model provides a novel cannula for a colonoscope, which comprises a cannula main body, the colonoscope is arranged in the cannula main body, the cannula main body comprises a plurality of flexible catheter sections, a rigid catheter section is arranged between any adjacent flexible catheter sections, one end of the cannula main body is provided with a balloon section, and the other end of the cannula main body is provided with a balloon. A carrying section and a fixed end are sequentially arranged on the cannula main body in the direction far away from the balloon section; a first gas injection tube and a second gas injection tube are fixed in the fixed end, the balloon section is provided with an inner balloon and an outer balloon, the first gas injection tube is communicated with the outer balloon, and the second gas injection tube is communicated with the inner balloon. By adopting the unique design of the cannula, the cannula can be fixed inside the colonoscope when the colonoscope is inserted into the colon for the first time, a more direct visual field and an operation channel are provided, a doctor does not need to repeatedly pass through a physiological bending part when the colonoscope is inserted again, direct contact between a patient and the colonoscope is reduced through the cannula, the colonoscope is prevented from entering and exiting the colon for many times, and the operation efficiency is improved. And the discomfort of the patient is reduced.

The utility model discloses an implant structure of a dental beauty implant tooth, which comprises an implant, a healing base and an implant tooth, an external thread is arranged on the outer surface of the implant, and a connecting structure capable of relieving injury of the implant and an alveolar bone when the implant tooth bites a hard object is fixedly mounted in the implant. The utility model belongs to the technical field of dental implants, and aims to solve the problem that a dental implant in the prior art is directly in threaded connection with an alveolar bone, so that the dental implant is easy to break when biting a hard object after being used for a long time and fatigued. The dental implant has the technical effects that after the implant is mounted in the opening formed by tapping on the alveolar bone, a medical worker can fill resin into a thread gap between the outer side of the implant and the alveolar bone through the straight pipe and the inclined pipe, so that a buffering effect is achieved, the fixation of the implant is reinforced at the same time, and the alveolar bone is prevented from being injured or broken when the implant teeth bite a hard object.

The present application provides a pericardial traction exposure device for minimally invasive cardiac surgery, and relates to the technical field of medical devices, which comprises a dilatation ring and a traction assembly arranged on the dilatation ring. The dilatation ring is a deformable elastic ring structure, which can gently and uniformly expand the pericardial tissue after being inserted into the pericardial cavity. The number of traction assemblies is multiple, and they are uniformly arranged on the outer periphery of the dilatation ring along the circumference. The traction assemblies work together to provide more uniform and stable traction force for the pericardial tissue, effectively exposing the heart and providing a clearer surgical field for the surgeon, simplifying the surgical steps, reducing the operation complexity, and improving the overall efficiency and safety of the surgery. Moreover, the dilatation ring and the traction assembly of the present application do not need to be pulled out from the chest wall after traction of the pericardial tissue, avoiding additional surgical incisions and being beneficial to the postoperative recovery of the patient.

The present invention discloses a syringe auxiliary tool, the syringe includes a barrel assembly, the syringe auxiliary tool includes a sleeve and a vibration device, the sleeve has a sleeve hole for being sleeved on the outside of the extrusion end of the barrel assembly and open at both ends, the sleeve has a ring-shaped accommodating interlayer; the vibration device is assembled in the accommodating interlayer. Through the design of the sleeve and the vibration device, the syringe auxiliary tool is assembled on the outside of the extrusion end of the barrel assembly of the syringe, the vibration device is started, the syringe auxiliary tool is driven to vibrate by the vibration of the vibration device, and the syringe is shaken by the vibration of the syringe auxiliary tool, so as to achieve a suspension state during the injection of the suspension, avoid precipitation and stratification, and improve the comfort during the injection. In addition, the number of vibration devices can be determined according to actual conditions.

The invention provides a self-adaptive brain pressure self-adjusting artificial skull. The self-adaptive brain pressure self-adjusting artificial skull comprises a plurality of artificial skull flaps and a fixing device, the artificial skull flaps are made of materials compatible with body tissues, and the multiple artificial skull flaps can be installed together to form an overlapping structure with a circular coverage area. The size of an overlapping area of the overlapping structure can be adjusted according to the change of the intracranial pressure; the fixing device can fix the artificial skull flaps on the skull body. The artificial skull can be implanted immediately during an operation, the decompression effect is not affected after the skull is implanted, the artificial skull has the self-adaptive craniocerebral pressure, the craniocerebral space of an operation area is automatically adjusted, and meanwhile trauma and risks caused by skull repairing through a secondary operation are avoided.