649results about How to "Reduce the difficulty of surgery" patented technology

The invention provides a fixing and navigating surgery system in a vertebral pedicle based on a structure light image. The system comprises a structure light scanner, an infrared navigating and positioning apparatus, a dynamic standard, a surgery apparatus with a plurality of infrared luminous diodes and a computer, wherein the structure light scanner and the infrared navigating and positioning apparatus are arranged in a positioning way; the surgery apparatus is provided with the plurality of infrared luminous diodes, and the infrared light transmitted from the diodes are captured by the infrared navigating and positioning apparatus to define the relationship between the navigation coordinate system of the infrared navigating and positioning apparatus and the surgery apparatus coordinate system of the surgery apparatus; and the dynamic standard which is clamped on the patient vertebra is also provided with a plurality of infrared luminous diodes for instantly tracking the change of a patient coordinate system to the navigation coordinate system. The invention replaces doctor manual pointing with the structure light image scanning, reduces the manual operation error, and reduces the injure of the X ray to the doctor and the patient; and the dynamic standard also has the characteristics of small volume and good function, can improve the reliability of the surgery and the precision of the nail implantation, and reduces surgical wounds.

The invention discloses a microcirculation resistance index calculation method based on a radiography image and a hydrodynamics model. The method comprises steps of selecting coronary artery images oftwo positions to carry out segmentation so as to obtain a coronary artery center line and a diameter; generating a coronary artery three-dimensional mode; acquiring blood conduction time Tmn and thespeed; establishing a blood vessel three-dimensional network; based on the coronary artery center line and the diameter of the X-ray reconstruction, generating an axially symmetrical two-dimensional plane mode; then, establishing two-dimensional axially symmetrical grids; measuring aorta mean blood pressure Pa; based on the obtained blood flow speed and the generated blood vessel three-dimensionalnetwork, solving fundamental formula of incompressible flows, and calculating the pressure drop deltaPi of each point from the entrance to the downstream along with the blood vessel center line, wherein the coronary artery far-end artery pressure Pd=Pa-deltaPi; and calculating the microcirculation resistance index IMR=Pd*Tmn. According to the invention, there is no need to carry out measurement through pressure guide wires, so operation is simple; operation difficulty and risk are greatly reduced; and the method can be clinically promoted and applied in large scale.

The invention relates to a microscopic surgical operation navigation system based on augmented reality and a navigation method. The navigation system comprises a fixing frame, a graph mark, a camera, a controller and display equipment, wherein the fixing frame comprises a foundation, a connection member, a fixing rod and a supporting board. The navigation method comprises steps that, S1, the fixing frame is fixed on an ill body; S2, the fixing frame and the ill body are scanned through a CTA, and a three-dimensional model is reconstructed; S3, a three-dimensional coordinate of the three-dimensional model is adjusted through software 3ds MAX to make the graph mark be at the world coordinate center; and S4, the three-dimensional model is projected by ARToolkit software onto a right center of the graph mark, so the three-dimensional model and the ill body image are superposed and fused. The system and the method are advantaged in that, the augmented reality technology is utilized, so the real world information, namely the ill body, is superposed and fused with virtual world information, namely the three-dimensional model of blood vessel muscle bones, so entity information which is difficult to experience in the real world can be acquired by operation doctors.

A spine image generating system based on an ultrasonic rubbing technology comprises a collecting unit and a processing unit. Ultrasonic rubbings are generated by the system based on ultrasonic imageswith two-dimensional spine surface structure characteristic outlines, and matched with a digital medical image outline, and thus a personalized spine surface topographic map which is consistent with an intraoperative position of a patient and updated in real time is obtained. A spine surgical navigation positioning system based on the spine image generating system comprises a navigation module andthe spine image generating system based on the ultrasonic rubbing technology. The spine surgical navigation positioning system can obtain the spine surface topographic map which is consistent with the intraoperative position of the patient and updated in real time, and can conduct real-time intraoperative navigation based on the spine surface topographic map. The spine image generating system based on the ultrasonic rubbing technology and the spine surgical navigation positioning system can greatly reduce the difficulty of a spinal operation, can achieve the operation auxiliary purposes of precise and nonradiative guided puncture, real-time navigation and being simple, convenient and reliable, and are particularly beneficial for application and popularization of a spinal minimally invasive surgery technology which is represented by a spine endoscopy to primary health care institutions.

The invention discloses a guiding catheter. The guiding catheter comprises a head end, a tail end and a main body part used for being connected with the head end and the tail end. The guiding catheter is provided with a catheter cavity and further comprises a bending adjustment section and a bending adjustment assembly. The first end of the bending adjustment section is connected with the head end, and the second end of the bending adjustment section is connected with the end, facing the head end of the guiding catheter, of the main body part of the guiding catheter. A central cavity of the bending adjustment section is communicated with the catheter cavity. The bending adjustment assembly comprises a handle. One end of a pulling string penetrates through the main body part and the bending adjustment section and is connected with the first end of the bending adjustment section. The other end of the pulling string is led out through the tail end of the guiding catheter and is connected with the handle. The length of the portion, placed in the main body part, of the pulling string and the length of the portion, placed in the bending adjustment section, of the pulling string can be adjusted through the handle. Due to the fact that the bending angle of the bending adjustment section is changed directly through the pulling string, the angle of the head end of the guiding catheter can be adjusted according to the physiological structure of a patient, the head end of the guiding catheter is made to stretch into a lesion position, and the applicability of the guiding catheter can be improved.

The invention relates to a balloon expandable stent with a side-hole channel, which belongs to the technical field of medical devices implantable into the blood vessel of human body. One end of the balloon is communicated with a balloon catheter that can inject and suck out contrast agent; an expandable compression stent is arranged outside the balloon; a main intracavity channel and an intracavity sub-channel are respectively arranged in the balloon and the balloon catheter; one opening of the main intracavity channel is positioned at the side wall of the balloon catheter, and the other opening is positioned at the top of the balloon; one opening of the intracavity sub-channel is positioned at the side wall of the balloon catheter, and the other opening is positioned at the side wall of the balloon; the expandable compression stent is provided with a side hole opposite to the side-wall hole of the balloon. The invention has the characteristics of simple structure, convenient operation and use, time saving and safety; meanwhile, the stent can break through the forbidden zone that the interventional therapy can not proceed due to the bifurcation and lesion of the blood vessel of brain, can simplify the steps of treating the bifurcation and lesion of the coronary artery, lower the operation risk and difficulty of stent-aiding embolism operation for wide-necked aneurysms, enhance interventional embolism / surgical clipping ratio, and alleviate patients' wound and pain.

The invention relates to a biopsy puncture auxiliary locator. The biopsy puncture auxiliary locator is characterized by comprising base plates which are matched with each other, a fixing plate, a locating pin reference plate, a rotating arm, a rotating sliding block, a sliding block gland and a guide pipe. The locating pin reference plate is arranged on the fixing plate, the base plates are magnetically connected to the locating pin reference plate, the rotating arm can rotate around the base plates, and the guide pipe is matched with the rotating sliding block and the sliding block gland and arranged on the rotating arm in a sliding mode. According to the biopsy puncture auxiliary locator, a doctor can perform a puncture operation fast and accurately, accuracy and stability are high, CT scanning is not needed again even if the body position of a patient moves inadvertently after location is finished, the locating position can be recovered just by overlapping an infrared reference line on the biopsy puncture auxiliary locator and CT infrared rays, repeated CT scanning and progressive needle insertion of a traditional puncture operation are avoided, operation safety is improved, operation time is shortened, radiation exposure caused by repeated roentgenoscopy is reduced, and tissue trauma and complications are reduced.

The invention relates to a 3D printing-based personalized cranial particle implantation guide system, including a head-fixed vacuum pad, particle implantation planning software, a personalized skull perforation template, a personalized particle implantation puncture template, template making and Printing software, 3D printer. The skull perforation template of the present invention is used in conjunction with the particle implantation puncture template, so that the intersection point of each particle implantation needle body is at the perforation of the skull, and the puncture needle passes through the skull smoothly, and the particle implantation needle column of the template can accurately guide the puncture needle. The puncture direction avoids blood vessels and important central nerves, accurately punctures to the lesion, reduces the difficulty of the operation, shortens the operation time, and reduces the risk of the operation.

The invention provides a surgical puncture path intelligent automatic planning method and system based on machine learning and a medical system. The surgical puncture path intelligent automatic planning method and system based on machine learning and the medical system can rapidly determine a surgical puncture path and a needle inserting point position and can allow a brain stereotaxic apparatus or a medical mechanical arm to achieve automatic puncture surgery operation. The planning method comprises the following steps that (1) sample image data of an existing case are acquired, and trainingdata and test data are made; (2) a three-dimensional segmentation deep neural network model is designed, and the three-dimensional segmentation deep neural network model is trained; (3) the sample image data of a patient are segmented and identified by using the trained three-dimensional segmentation deep neural network model; (4) a three-dimensional model is constructed based on a segmentation identification result and the sample image data; (5) a safe needle insertion constraint area is determined based on the target point position and medical prior information; and (6), in the safe needle insertion constraint area, a three-dimensional space trajectory planning algorithm is utilized to complete surgical puncture path planning.

The invention discloses an intravascular stent of a composite structure; the intravascular stent comprises a stent main body, wherein the distal end of the stent is restrained as an adducted form by virtue of a tightening wire, and the tightening wire is degradable magnesium alloy or degradable iron alloy; one or more auxiliary wires are woven on the stent main body; when the stent is applied to blood vessel of brain, the auxiliary wire is pure platinum or alloy thereof, pure gold or alloy thereof, pure tungsten or alloy thereof, or pure tantalum or alloy thereof; and when the stent is applied to peripheral blood vessel, the auxiliary wire is cobalt-chromium alloy or stainless steel or tungsten or tantalum. The stent, when serving as a thrombus removal system for treating cerebral apoplexy, not only can be used for removing thrombus effectively for several times but also can be used for catching small thrombus flowing to distal end so as to prevent distal blood vessels from getting blocked; and the stent can be used for dilating stenosis or blocked brain blood vessel or peripheral blood vessel, so as to take an effect of dredging and reconstructing a blood flow. The stent can be repositioned and released, with high controllability; and the stent can be used for reducing operation difficulty and greatly improving an operation success rate.

The invention provides an anastomat for gastrointestinal tract anastomosis surgery and a production method thereof. The anastomat comprises an anastomosis nail and a base and is divided into two types, namely a combined type and an independent type. The anastomat is composed of degradable materials and medical barium sulfate and can be finally disintegrated to be powder to be removed from the body after being used up. An envelope is formed on the outer surface of the anastomat through polyacrylic resin and contains medicines such as sulfonamides and quinolones antisepsis and anti-inflammation medicines and adrenobazonum, dicynone and other hemostasis medicines, and the envelope can selectively perform medicine slow release and controlled release according to different pH physiological environments of gastrointestinal tracts.

The invention discloses a sheath-core for conveying an interventional device and a conveying system with the sheath-core. The sheath-core comprises a core tube, wherein a guiding tip and an interventional device fixing tip are fixed at the far end of the core tube, a mounting section for accommodating a device to be implanted is arranged on the core tube between the guiding tip and the implanting device fixing tip; a tube wall thickening layer is arranged on the periphery of the mounting section. The conveying system comprises a sheath tube, and the sheath-core which is arranged in the sheath tube and used for conveying the interventional device. The sheath-core for an interventional operation can be used for preventing the conveying system from bending in the forwarding process, and is high in safety. According to the conveying system, the bending direction controllability of the far end of the sheath tube can be improved, and a doctor can conveniently bend the far end of the sheath tube and move the far end of the sheath tube to a target direction or site through a traction wire, so that the operation difficulty can be lowered.

The invention relates to a percutaneous aortic valve replacement surgery conveying device with valve positioning function, which is characterized by comprising a conveying rod (1), a sheath pipe (5), a circular ring (3), positioning rods (2) and circular ring control cables (4), wherein the circular ring (3) is sheathed on the lower end of the percutaneous aortic valve replacement surgery conveying rod (1) and located in the conveying sheath pipe (5); the quantity of the positioning rods (2) is at least two, and one end of each positioning rod (2) is hinged with the conveying rod (1); and the quantity of the circular ring control cables (4) is at least two, the lower end of each circular ring control cable (4) is provided with a structure for supporting the circular ring (3), and the upper end of each circular ring control cable (4) stretches out of the human body along the axial direction of the conveying rod (1). The conveying device can play good auxiliary function on positioning the transplanted valve, increase the success rate of percutaneous aortic valve replacement surgery and reduce surgery difficulty and postoperative complications; the conveying device can also reduce surgery pain and risk for patients and decreases medical expenses.

The invention relates to a 3D printing personalized plunger type puncture treatment template with a fixing device. The treatment template comprises a template base plate, template guide holes, puncture needle guide columns, fine adjustment bracket insertion holes, positioning holes, lightweight through holes, laser alignment lines, puncture needle numbers, depth marks and the like. The template puncture needle guide columns can be taken down at any time, the diameter of the template guide holes is large and the length of the template guide holes is small after template puncture needle guide columns are taken down, so that local anesthesia points are accurate in positioning, local anesthesia is easy to implement, a bone drill with a large diameter can be conveniently used, and drilling andpositioning are precise. The three fine adjustment bracket insertion holes are formed and matched with a fine adjustment bracket in use so that the position of the template can be fine adjusted and fixed. The puncture needle numbers and the depth marks are arranged on the surface of the template base plate, and the situation that puncture needles are inserted by mistake because no depth marks arearranged is prevented. The template is customized, each puncture needle is precisely designed before operations according to CT, magnetic resonance and other medical images, precise minimally invasivesurgery is achieved, operation difficulty and operation risks are greatly reduced, the learning cycle of young doctors is shortened, services are quickly conducted, and then more patients are benefited.

The invention relates to a method for preparing bionic laminated cartilage / bone element, wherein it comprises preparing porous same heterogenous bone or different bone elements; preparing artificial cartilage and laminated cartilage / bone composite. The invention processes the bone into needed size and shape, to be washed and immunity treatment, to be put at the bottom of mould; then at positive and passive pressures, pouring the polyvinyl alcohol / biological active component preformed element and polyvinyl alcohol / lubricant molecule preformed element into mould; flattening the surface and compressing; freezing and fusing, shaping. The inventive product has surface layer as abrasion-resistant lubricant layer, middle layer as force layer, and bottom layer as biological active cartilage / bone combine layer, to meet biological physica property and physiological function.

An intraoperative stent system, comprising an artificial blood vessel portion (4) and a main stent portion (5) sutured together with the artificial blood vessel portion (4); the intraoperative stent system also comprises a side branch stent portion (6), the side branch stent portion (6) transversely extending outward from the artificial blood vessel portion (4) or the main stent portion (5), and connecting to and communicating with the artificial blood vessel portion (4) or the main stent portion (5). The intraoperative stent system saves operation time and reduces operation difficulty.

The invention discloses a modeling method of a necrosis caput femoris restoring model based on an umbrella-shaped caput femoris supporter. The modeling method comprises the steps that firstly, a three-dimensional model of a to-be-restored caput femoris is obtained, wherein the NURBS curved surface model of the to-be-restored caput femoris is obtained, the to-be-restored caput femoris is a caput femoris which exists in the thigh tissue necrosis area and is pre-restored by the caput femoris supporter, and the caput femoris supporter is composed of an umbrella-shaped supporter body and a supporting sleeve; secondly, the necrosis area needing to be separated is determined according to the shape of the umbrella-shaped supporter body, and a necrosis caput femoris model is established; thirdly, a caput femoris supporter model is established; fourthly, a necrosis caput femoris implantation model is established, wherein the necrosis caput femoris implantation model with an implantation channel and a three-dimensional model of an implanted bone are established; fifthly, the necrosis caput femoris restoring model is established. The modeling method is simple in step, reasonable in design, convenient to achieve and good in using effect, the restoring model of the caput femoris supporter implanted into the necrosis caput femoris can be easily, conveniently and quickly established, and the quality of the established restoring model is high.

The invention discloses a dual-pinhole fixing device for the neurosurgery department, and belongs to the technical field of medical instruments. According to the technical scheme, the dual-pinhole fixing device for the neurosurgery department includes a fixing rack and a machine body, a fixing clip base is arranged at the lower side of the fixing rack, a tightening handle is arranged on the uppersurface of the fixing clip base and assembled with the fixing clip base through handle tightening nuts, and a bed body tightening baffle is arranged at the lower side of the tightening handle and assembled with the tightening handle through a baffle synchronous rotating connector. The dual-pinhole fixing device for the neurosurgery department has the advantages of being simple in structure, convenient to use and capable of conducting fast and effective fixation on double-layer or multi-layer tissue, and therefore the surgery difficulty is greatly decreased.

The invention provides a left atrial appendage occlusion device which comprises a left plate surface and an outer plate surface. The inner plate surface and the outer plate surface are braided by shape memory silk threads. The centers of the inner plate surface and the outer plate surface are connected through a connecting part. The connecting part is a prefabricated rod. The inner plate surface and the outer plate surface are respectively fixed at two ends of the connecting part. A flow choking membrane is disposed in each of the inner plate surface and the outer plate surface. A connector is disposed on the outer plate surface. Preferably, the inner cavity of the connecting part is communicated with the through hole of the connector to form a conveying passage. The left atrial appendage occlusion device has the advantages the device is implanted from the outer side of left atrial appendage in an minimally invasive manner, a doctor can see the left atrial appendage directly, surgery process is simplified, surgery safety is increased, and the pains of a patient is greatly relieved; due to the fact that the device is provided with the conveying passage, medicines or development agents can be injected into a human body conveniently during a surgery.

The invention relates to the field of medical science, and particularly relates to an anterior cruciate ligament stopping location and ligament tunnel location device combining with preoperative 3D planning information. The device comprises hardware such as a C-type arm X-ray machine, a gama correction calibration board, an image capturing card, a positioning robot, a path positioning rack, a position trailing platform, and a computer as well as software such as a 3D planning module and a 2D positioning and navigation module which are stored in the computer. The 3D planning module makes use of preoperative 3D image data of knee joints of a patient, assists a doctor in finishing personalized surgical planning, and projecting a 3D environmental message to a 2D navigation message along a specific projection direction. The 2D positioning and navigation module makes use of a 2D medical image in surgical space collected by the hardware as well as location information of various trailing objects and combines the 2D navigation message to construct a navigation environment to control the hardware such as the positioning robot and the path positioning rack to finish an accurate operation path positioning. The anterior cruciate ligament stopping location and ligament tunnel location device can assist the doctor in finishing the precise and personalized operation of anterior cruciate ligament stopping location and ligament tunnel location, thus lowering operative difficulties and enhancing operative treatment efficacy.

The invention provides a valve clamping device and a valve clamping system. The valve clamping system comprises the valve clamping device and a pushing device; the valve clamping device comprises a pushing rod, two or more clamps, one or more extension arms, and a driving assembly for driving the clamps to be opened and closed and driving the extension arms to stretch out and draw back; and each clamp comprises a first clamp arm and a second clamp arm which can be relatively opened and closed, and the one or more extension arms are arranged on the surfaces of the first clamp arms in stretchingout and drawing back modes. The extension arms capable of stretching out and drawing back are arranged on the surfaces of the first clamp arms of the valve clamping device, the extension arms stretchout of the first clamp arms while the first clamp arms are opened relative to the second clamp arms of the valve clamping device, the length of the first clamp arms of the clamps is increased equivalently, the long first clamp arms can support valves well when capturing the valves, the valves are prevented from slipping from the surfaces of the first clamp arms, thus the movable valves can be quickly captured, the surgery difficulty is lowered, and the surgery efficiency is improved.

A steel plate for funnel chest orthopaedic surgery includes a supporting plate (1), a fixing piece (2), a telescopic fixing piece (3), a guiding head (4) and screws (6). The supporting plate (1) is an elongate steel plate. One end of the supporting plate (1) is designed to be integrated with the fixing piece (2), and the other end is provided with a size-adjusting strap (5). The telescopic fixing piece (3) is an elongate steel plate with the same width as that of the supporting plate (1). One end of the telescopic fixing piece (3) is designed to be integrated with the fixing piece (2), and the other end is provided with a groove. The guiding head (4) is an elongate steel plate with the same width as that of the supporting plate (1). One end of the guiding head (4) is provided with a hook, and the other end is provided with a groove.

The invention discloses a coupled full-intervertebral joint system, which possesses little oligodynamic joint between upper and lower intervertebral end-plate on the spine, wherein one little oligodynamic joint is set between each little joint position on two sides of upper and lower intervertebral or upper and lower crests; one end of little oligodynamic joint is fixed on the vertebral arch root or crest of upper vertebral bulk with the other end fixed on the vertebral arch root or crest of lower vertebral bulk; the joint system is composite joint system with intervertebral little oligodynamic joint and little oligodynamic joint, which replaces lateral joint to support vertebra to avoid joint from degenerating and hardening effectively.

The invention discloses an endoscope operating sheath for urological surgery. The endoscope operating sheath comprises a core rod which can be arranged in the endoscope operating sheath to axially slide relative to the endoscope operating sheath. The core rod is internally provided with a guide wire passage, a water injection passage and an image passage, and the guide wire passage, the water injection passage and the image passage extend from the rear end to the front end of the core rod. An endoscope handle is provided with a guide wire connector, a water injection connector and an endoscope connector for guiding a guide wire, water and an endoscope into the guide wire passage, the water injection passage and the image passage respectively. The endoscope operating sheath and the core rod enter a human body along the guide wire, the core rod is drawn out after reaching a lesion part, then a flexible cystoscope is put in the endoscope operating sheath, and the endoscope operating sheath and the flexible cystoscope are operated to observe the lesion part and cooperate with surgical instruments for performing the surgery. The method is simple and easy to operate, and the endoscope operating sheath can be widely applied to renal pelvis and renal caliceal calculi surgery to serve as a visible ureterectasia sheath and is applicable but not limited to cardiovascular intervention, gynecology department, thyroid gland and mammary gland department, neurosurgery department and orthopedics department and other unmentioned related clinical medical fields.

The invention relates to brackets, a bracket delivery system and a kit. The main bracket delivery system comprises a main delivery catheter and the main bracket, the main delivery catheter comprises an outer catheter and an internal catheter which are coaxially arranged, the outer catheter has a proximal end part, a distal end part and a first hollow cavity body, and the inner catheter extends inthe first hollow cavity body of the outer catheter; the main bracket capable of being released in a delivery structure type is kept in the portion, between the outer catheter at the proximal end of the main delivery catheter and the internal catheter, in the first hollow cavity body; the main bracket delivery system is characterized in that the main bracket is a bare bracket and comprises a main bracket body and a main passage enclosed by the main bracket body, and one or more openings are distributed in the main bracket body. The invention further relates to the kit comprising the main bracket delivery system and the main bracket. The delivery system and the kit are used for accurate locating and quick replacement of the main bracket and the branch bracket in the aortas, and standard production of the main bracket can be achieved.

A knee joint prosthesis with functions of the elastic meniscus comprises a thighbone component; the thighbone component comprises a tibia component; the tibia component comprises a tibial plateau and a tibial tray; an elastic part with functions of the elastic meniscus is arranged between the tibial plateau and the tibial tray and is in contact with the bottom of the tibial plateau; the elastic part can be an elastic pad; the elastic pad is matched with the space which is positioned between the tibial plateau and the tibial tray and capable of accommodating the elastic pad in shape and size; a limit post is arranged below the tibial plateau; a positioning hole is formed on the elastic pad and in a position corresponding to the limit post; and the limit post passes through the positioning hole to be fixed in a clearance fit with an inner hole of a fixing post on the tibial tray. Since the elastic material or part (namely the elastic part) is additionally arranged between the tibial plateau and the tibial tray to simulate the functions of the natural meniscus, the following effects can be achieved that the operation difficulty during operation can be reduced; a favorable buffer can be provided for the knee joint after operation; oscillation conveyed among the joints can be absorbed; abrasion can be reduced substantially; the flexion range of the knee joint can be expanded; and compared with a traditional knee joint prosthesis, the knee joint prosthesis provided by the utility model can improve physical performance of the lower limbs of a human body.

The invention discloses a catheter of composite structure. The catheter comprises a high-molecular pipe on the outer layer, a tubular woven net or spring net on the middle layer and a smooth inner layer. The high-molecular pipe on the outer layer is made of nylon, nested polyetheramide elastomer, polyurethane or silicone rubber; the wall thickness of the far end of the woven net or spring net on the middle layer is smaller than or equal to the wall thickness of a woven net body or spring net body; the inner layer is made of polytetrafluoroethylene or high-density polyethylene or nested polyetheramide elastomer containing a friction coefficient reducing additive. Compared with a conventional plastic catheter, the composite catheter has the advantages that the same mechanical performance requirement is met, and the wall thickness can be greatly reduced; the passing performance, folding resistance and controllability of the composite catheter are greatly improved, the composite catheter can be pushed to deeper and smaller blood vessels under the same conditions, and the operative successful rate is increased.

The invention discloses a use method of a puncture guide device. The use method comprises the following steps: firstly, positioning a surgical part of a patient; and then scanning the surgical part of the patient with CT (computed tomography), and connecting a puncture point and a surgical target point in CT imaging to obtain a puncture path and a puncture depth; calculating a projection angle alpha of an included angle between the puncture path and a sagittal line on a coronal plane, and a projection angle beta of an included angle between the puncture path and a coronal line on a sagittal plane by a CT machine system; adjusting the laser lamp light beam direction and the puncture path direction of the puncture guide device to be conform according to the projection angle alpha and the projection angle beta; adjusting the puncture guide device, so that the laser lamp light beams point to the surgical puncture point; and ensuring that a puncture needle is straight and the tail end of a puncture needle is positioned on a laser lamp light beam line in the follow-up guide. The use method provided by the invention realizes the puncture surgery guide, and is accurate and reliable, and is simple and convenient to use.

The invention relates to a thoracic aorta covered stent, which is used for treating aneurysm of thoracic aorta and dissecting aortic aneurysm in minimally invasive surgeries. The thoracic aorta covered stent comprises a cover and a stent composed of a plurality of cylindrical single rings, wherein the cover is adhered to the stent to form a tubular cover; the plurality of cylindrical single rings are in wave patterns; a supporting frame is arranged at the near end of the stent; and each cylindrical single ring comprises a first type cylindrical single ring and a second type cylindrical single ring which are distributed at intervals on the tubular cover; the amount of the waveforms of the first type cylindrical single ring is not less than that of the second type cylindrical single ring; and the waveform of the first type cylindrical single ring is less than that of the second type cylindrical ring.