75 results about "Surgical failure" patented technology

A cannula assembly including a camera system to help provide multiple viewing angles of a surgical site. This added visualization provides the surgeon with more comprehensive feedback during the surgical procedure, leading to better patient outcome and a reduction in the surgical failure rate. The cannula has a main lumen and a smaller secondary lumen and is insertable into the surgical site for easy surgeon adaptation. The camera is coupled to the secondary lumen toward the side of the cannula. This allows the camera to provide visualization without obstructing the main lumen for the use of tools. The camera wiring runs through a long tube connected to the camera and through a handle at the end of the tube without blocking access to the surgical site.

The invention discloses a practical flexible cystoscopy surgery auxiliary robot system. The system particularly comprises a robot used for achieving a flexible cystoscope can move at four degrees of freedom; a remote control device and control method which are used for converting the action with multi-degree-of-freedom operation to control signals so as to precisely and synchronously control the execution terminal; a driving plate mechanism which can precisely clamp and control a flexible cystoscope driving plate; the flexible cystoscope matched with various specifications and models and a flexible cystoscope clamping component which can be mounted and dismounted quickly; a support which can assist in supporting the soft part of the flexible cystoscope in cooperative work. According to the system, the surgical flexible cystoscope can be quickly mounted or dismounted on the robot by a doctor to precisely clamp and control the driving plate of the flexible cystoscope, therefore, with the robot arm movement at four degrees of freedom precisely and synchronously controlled by control terminal devices, the precise remote control performed on the flexible cystoscope for a surgery is achieved, the X-ray radiation on site suffered by the doctor is avoided, and meanwhile, the surgical difficulty is lowered, the surgical failures are reduced, and the service life of the flexible cystoscope is prolonged.

The invention discloses a femoral artery direct puncture needle, comprising an integrated cylindrical needle body and needle handle, a separation wall is arranged in the inner channel, the inner channel is axially divided into a left channel and a right channel which are independent, the port of the left channel is an inclined left contrast channel outlet, a left contrast channel is arranged at the needle handle part of the left channel, the port of the right channel is a right contrast channel outlet which is in backward direction with the left contrast channel outlet, a right contrast channel is arranged at the needle handle part of the right channel, the left channel and the right channel are provided with an unidirectional haemostasis valve respectively, the ports of the right contrast channel and the left contrast channel are respectively provided with a heparin cap. When the puncture needle is used for the intervention treatment, even though the puncture needle enters the femoral artery, the seal wire is ensured to enter the target blood vessel, the invention solves the problem that the puncture is done again because the seal wire enters the femoral artery after radiography, even the operation is failure and the patient feels the pain.

The invention discloses a transurethral ureter hard convection negative-pressure channel broken stone remover and relates to the field of medical apparatus and instruments. The transurethral ureter hard convection negative-pressure channel broken stone remover comprises an import mirror tube and a broken stone nephroscope tube which are used in matched with a ureteropyeloscope; the import mirror tube or the broken stone nephroscope tube is a metal hard tube, and the shape and the size of the cross section of the whole tube are the same; a sheath tube is a round thin-wall metal hard tube; a gap between the broken stone nephroscope tube and the sheath tube form a water outlet channel with equal cross section area; and [the outer circumference Fr(sheath tube) of the cross section of the sheath tube]*k is equal to the outside perimeter Fr(broken stone nephroscope tube) of the cross section of the broken stone nephroscope tube, and k is equal to 0.35 to 0.65. The transurethral ureter hard convection negative-pressure channel broken stone remover can solve the problem of operation failure caused by the facts that stones are difficult to appear and the operation channel is lost because the sheath tube is imported into the operation part at inaccurate position, and can solve the problems that the operation time is prolonged, the residual stones are excessive and the operation risk is increased because of low absorbing and removing speed of the broken stones and residues caused by the facts that the pressure in pelvis is not liable to rapid and free adjustment and a relief control valve cannot be adjusted flexibly and smoothly in the broken stone removing process.

The invention provides a surgical suture with reinforced barbs. The surgical suture comprises a slender body, wherein the slender body is a single-stranded suture with a smooth outer surface; at leastone barb is arranged on the slender single-stranded suture; the barbs are arrayed in one direction or double directions and can be positioned on the single side or the symmetric double sides of the slender single-stranded suture; and the barbs which are positioned on the symmetric double sides can be positioned at the same position or different positions of the slender single-stranded suture. Atleast one annular groove is formed in the lower edge of each barb, a biological adhesion agent coats the inside of each groove; at least one circle of suture is wound in each groove; after winding ofthe suture is finished, each groove is filled with a filling agent completely and smoothly. By the surgical suture with the reinforced barbs, the fixing strength of the single-stranded suture barbs can be improved effectively, the barbs are prevented from failing or being stripped from an axle of the suture, and the risk of failing of a clinical suture surgery is relieved.

The invention relates to a built-in electric foreskin circumcision device comprising a motor, an ejection sleeve, a U-nail collar, and a foreskin cutting cover; the motor is connected with or makes contacts with the ejection sleeve, and used for pushing the ejection sleeve forward; the ejection sleeve is connected with or makes contacts with the U-nail collar, and used for pushing the U-nail collar forward; the motor is connected with or makes contacts with the foreskin cutting cover; the motor can drive the U-nail, thus preventing unstability and various risks caused by artificial driving; the motor can drive the U-nail with adjustable and stable pushing force, thus preventing surgery failure caused by the U-nail breaking the foreskin tissue when overlarge force is applied, and preventing haemostasis failure caused by unthoroughness of nail reversion when too small force is applied; a switch can adjust the propulsion distance and speed, so the built-in electric foreskin circumcise device can suit different surgery objects and environments.

The invention relates to a non-piercing microwave ablation antenna, which comprises a radiator and a radiator cover, wherein the radiator is located at the front end of an antenna, the radiator coveris sleeved on the radiator, and the front end of the radiator cover is a blunt tip. Because the front end of the radiator cover applies the design of blunt tip, the special non-piercing shape enablesthe antenna to freely travel in the lung tissue but not penetrating the blood vessels and bronchi of the lung, and the tumor angiogenesis exists in the GGO cannot be damaged by the blunt head portionto cause bleeding, the operation failure rate because the lesions can not be identified due to the bleeding in the lung is reduced, meanwhile the possibility of diffusion of the tumor cells through the piercing passage and bleeding blood vessels is prevented. The front end of the blunt tip can press the GGO lesions without passing through GGO, and the lesions is enabled to be compacted and the volume is reduced obviously, the ablation space is reduced and the lung tissue is protected maximum. Because the non-piercing microwave ablation antenna is different from the traditional mode which passes the lesions to ablate normally, and the influence of the ablation passage in the lesions to the sample of pathological biopsy is prevented.

The invention relates to a disposable puncture endoscope used for attached observation of a puncture body in percutaneous nephrolithotomy, solving the clinical restrictions of poor puncture accuracy, big amount of bleeding, high operation failure rate and poor safety of the existing appliances used in percutaneous nephrolithotomy. The puncture endoscope comprises an ocular unit, an image transferring unit, a main endoscope body, a lighting unit and a puncture body. The puncture body is composed of a disposable puncture needle and an indwelling catheter. The disposable puncture needle comprises a hollow outer tube and a plastic needle body. The ocular unit is composed of an ocular cover, and an ocular glass and an ocular lens which are arranged inside the ocular cover. The image transferring unit is composed of a multi-filament image transferring rod arranged inside the hollow outer tube of the puncture needle. The front end of the main endoscope body is connected with the plastic needle body of the puncture needle and the back end of the main endoscope body is connected with the ocular cover of the ocular unit. The lighting unit is composed of a built-in lighting component and a detachable lighting component. The puncture endoscope has the advantages that the puncture endoscope is good in visibility during operations, high in puncture accuracy, less in bleeding, high in operation success ratio and high in safety and is unnecessary to be charged with water.

The invention relates to an anastomat, which comprises a body, a pin bin which is arranged on the body, a pin pushing plate which is arranged inside the pin bin, and a push rod which is arranged on the body and used for pushing the pin pushing plate, wherein the front end of the push rod is provided with a push part which contacts the pin pushing plate; the lower end face of the push part is flush with the lower end face of the pin pushing plate; and a limit stop is pressed below the pin pushing plate and connected with a reset mechanism which drives the limit stop to upspring. After the suturing process is over each time, the push rod can be retracted, the pin pushing plate is rested on the front of the pin bin, and the limit stop upsprings under the action of the reset mechanism and prevents the push rod from pushing the pin pushing plate to suture again, so that the anastomat has the function of locking the hollow pin bin and surgical failure can not be caused due to reutilization of the hollow pin bin.

The invention relates to a composition for preventing scar adhesion, a postoperative anti-adhesion material and application. Epidural scar adhesion is an important cause of postoperative lumbar surgery failure syndrome, and the invention aims to provide a drug-loaded postoperative sealing material which can seal wounds and realize stable release of drugs at the same time. The invention firstly provides the mitomycin C-IFN gamma-sodium hyaluronate conjugate for preventing scar adhesion, the conjugate can effectively inhibit scar tissue formation and slow down the drug degradation speed, and when the conjugate is applied to a polyethylene glycol sealant, the sealing effects of low swelling and rapid condensation can be achieved. The product is especially suitable for spinal surgeries such as laminectomy and the like, and has good clinical application value.

The invention discloses an interventional catheter auxiliary device for emergency nursing, and relates to the field of medical instruments, the interventional catheter auxiliary device comprises an auxiliary seat main body, the two sides, away from each other, of the auxiliary seat main body are provided with matched tightening bandages, the top of the auxiliary seat main body is provided with a visible through hole, and a driving friction roller and a clamping friction roller are arranged in the visible through hole, and matched guide pipe clamping grooves are formed in the circumferential side of the driving friction roller and the circumferential side of the clamping friction roller. Through the arrangement of a tightening bandage, a driving friction roller, a clamping friction roller, a rapid adjusting assembly, a fine adjusting assembly and a movable clamping assembly, the device can be fixed to the body of a patient, a catheter can be accurately and stably inserted into a lesion position, accurate operation is guaranteed, and through the arrangement of a rotation stopping assembly, the catheter can be accurately and stably inserted into the lesion position. And the position of the catheter can be fixed, so that the situation that the catheter displaces to cause operation failure during operation is prevented.

The invention relates to the technical field of medical instruments, and discloses a femoral tunnel guiding and positioning device for anterior cruciate ligament reconstruction. The femoral tunnel guiding and positioning device comprises a clamping piece; a thigh of a patient and a 3D printed femur can be clamped through a first spring clamp and a second spring clamp on the clamping piece; the femur of the patient is parallel to the 3D printed femur through an adjusting device; the tunnel exit position and the tunnel length can be determined on the 3D printed femur through a measuring scale, and the tunnel exit position and the tunnel length on the patient femur parallel to the 3D printed femur are determined after the tunnel exit position and the tunnel length on the 3D printed femur aredetermined, so that the direction and the length of the tunnel are conveniently controlled, and the risk of surgical failure is reduced; meanwhile, a kirschner wire outlet point can be prevented fromdeviating, the situation that the rear wall of the lateral condyle of the femur is broken due to deviation of the kirschner wire outlet point is avoided; and the femoral tunnel guiding and positioningdevice has the advantages of being novel in design, simple in structure, easy to operate, capable of preventing the kirschner wire outlet point from deviating and capable of conveniently controllingthe direction and length of a tunnel.

The invention provides a novel scalp retractor for separating a scalp artery and belongs to the technical field of medical instruments. A conventional scalp double tooth top sharp hook has severe damage to scalp, a retracted scalp edge blocks a surgical area and the accidental injury of a target artery directly affects successful performance of a surgery and even causes failed surgery. The technical scheme of the inventive patent is that: the novel scalp retractor for separating the scalp artery is applied to various superficial skin surgeries in the surgery field of a horizontal hook retractor and comprises a small blunt cerebral plate hook which is connected with a tough, well-adaptable and replaceable rubber band and a sharp single tooth hook. The invention has the advantages that: the novel scalp retractor for separating the scalp artery can prevent a projecting scalp edge from blocking the surgical area, and avoid frequent fall of a scalp hook and the accidental injury of the target artery; and the novel scalp retractor contributes to successfully and efficiently separating a superficial temporal artery or an occipital artery so as to establish a communication cycle between an internal carotid and an outer artery.

The invention discloses a breath positioning device for CT-guided percutaneous lung biopsy and an application method thereof. The positioning device comprises a support part and a human body identification part, the support part comprises a triangular support which is provided with a fixing sliding rod, and a laser lamp fixing support for fixing a laser lamp is slidingly arranged on the fixing sliding rod; the human body identification part comprises a supporting plate, two fixing clamps are arranged on the lower portion of the supporting plate, suction cups are arranged at the four corners ofthe supporting plate, and a transparent plate with a scale is arranged on the supporting plate; during use, the height of the laser lamp is adjusted, laser points fall on the transparent plate, the puncture breath control condition is determined according to the positions of the laser points on the transparent plate during breath, and it is guaranteed that a biopsy needle is inserted to a presetlevel; the scanning radiation dose and the complication risk caused by multi-time puncture are reduced, the surgical failure risks are greatly reduced, and the puncture success rate is increased; thedevice is low in cost and operation difficulty and has high clinical value and social and economic benefits.

The invention discloses a frameless locator for a minimally invasive surgery in the neurosurgery department, and relates to the field of the neurosurgery department. The frameless locator for the minimally invasive surgery in the neurosurgery department comprises a bed body; the bottom of the bed body is fixedly connected with a first standing plate and a second standing plate; the first standingplate and the second standing plate are located on the head side and the tail side of the bottom of the bed body respectively; a lead screw is rotationally connected between the first standing plate and the second standing plate through a bearing; the lead screw is sleeved with a horizontal positioning block; a threaded hole is formed in the horizontal positioning block; the horizontal positioningblock is in threaded connection with the lead screw through the threaded hole; a transverse supporting plate is fixedly connected to the side wall of the horizontal positioning block; and a supporting block is fixedly connected to the bottom of the bed body. According to the frameless locator for the minimally invasive surgery in the neurosurgery department, before a puncture needle is inserted into a cannula, the puncture angle, position and height of the cannula can be adjusted in advance, so that a beginner can operate conveniently, the phenomenon of surgical failure caused by incorrect insertion position and angle of the puncture needle is prevented, and the pain of a patient is reduced.