85results about How to "Fast surgery" patented technology

Cells grown on a microcarrier are separated from the microcarrier by enzymatically digesting the microcarrier. More specifically, chondrocytes may be grown on dextran microcarrier beadlets and then the beadlets digested using dextranase to separate the chondrocytes from the carrier. Cells can also be grown on chitosan microcarriers to be used for implantation. In addition, cells can be grown on polysaccharide polymers to be used as implant devices. Various polymers serve as scaffolds for cells to be used for implantation. The polymers can be used for cell culture as well as for preparing scaffolds useful for tissue replacement such as cartilage tissue.

The invention provides composition and methods for repairing a ruptured anterior cruciate ligament.

A system for treating anterior pelvic organ prolapse according to one aspect of the present invention comprises a cape for supporting an anterior organ (such as a bladder) that has prolapsed into a vagina, a plurality of support arms coupled to the cape, and a plurality of fasteners for attaching the support arms to a portion of the pelvic wall. Each one of the plurality of fasteners is coupled to a respective one of the plurality of support arms. The system further includes a tension adjustment system. Among other things, the present invention provides an integrated, pre-fabricated solution to anterior pelvic organ prolapse. All components of the system can thus be quickly deployed, without the need to build the repair system piecemeal. Among other things, this results in quicker surgeries, less risk to the patient from anesthesia, and less risk of failure of the repair due to the improper assembly of the repair system. Additionally, the present invention provides a completely transvaginal solution to treating anterior pelvic organ prolapse, is easier for less experienced surgeons to perform, and poses far less risk of injury or death to the patient.

The invention discloses a thoracic aortic aneurysm coated stent which comprises a metal stent and a polymer film which is sleeved on the external side of the metal stent. The metal stent comprises a laser cutting bare stent with one end located outside the polymer film, a laser cutting stent and a heat treatment stent; the laser cutting stent and the heat treatment stent are located inside the polymer film; the metal stent is in a waved structure; an overlapping part of the metal stent and the polymer film is in suture connection with the polymer film; and one end of the laser cutting bare stent, which is located on the external of the polymer film, is provided with a plurality of hanging rings which are used for connecting with a conveying system. According to the thoracic aortic aneurysm coated stent, a minimally invasive way can be employed to treat a thoracic aortic aneurysm to enable an aneurysm cavity and a parent artery lumen to be immediately isolated to repair lesion blood vessels. The invention also discloses a thoracic aortic aneurysm minimally invasive treatment system with the thoracic aortic aneurysm coated stent.

The invention discloses a near-distance image navigation full-automatic radioactive particle implanting device which comprises a puncture needle puncture module, a radioactive particle implanting module and a puncture needle rotating module. The puncture needle rotating module comprises a puncture needle, a puncture needle clamping head and a puncture needle rotating wheel which are coaxially arranged, a puncture needle rotating wire is wound on the puncture needle rotating wheel, the radioactive particle implanting module comprises a fixing barrel which supports the puncture needle rotating wheel and is in rotatable connection with the same, a radioactive particle clip is fixed on one side of the fixing barrel and communicated with the puncture needle, the front portion of a flexible probe wound on a probe driving wheel body is mounted in the puncture needle in an inserted manner, a probe driving wire is wound on a probe driving wheel, the puncture needle puncture module comprises a slider fixedly connected with the fixing sleeve, and the slider is connected with a spiral transmission module which is driven by a screw rotating wire. The near-distance image navigation full-automatic radioactive particle implanting device is high in radioactive particle implanting accuracy and high in speed, and damage to doctors by radioactive operating environment can be lowered.

Cells grown on a microcarrier are separated from the microcarrier by enzymatically digesting the microcarrier. More specifically, chondrocytes may be grown on dextran microcarrier beadlets and then the beadlets digested using dextranase to separate the chondrocytes from the carrier. Cells can also be grown on chitosan microcarriers to be used for implantation. In addition, cells can be grown on polysaccharide polymers to be used as implant devices. Various polymers serve as scaffolds for cells to be used for implantation. The polymers can be used for cell culture as well as for preparing scaffolds useful for tissue replacement such as cartilage tissue.

The invention discloses a radioactive particle implantation needle-driven robot which comprises an ultrasonic peripheral module, a needle head pushing module, a needle head storage module and a needlehead delivery module; the ultrasonic peripheral module comprises a needle automatic clamping assembly used for clamping a puncture needle; the needle head pushing module is used for rotating the ultrasonic peripheral module to be switched between a needle replacing position and a puncture position and is used for pushing in or pulling out the puncture needle in an axial direction of the punctureneedle; the needle head storage module comprises multiple needle storage bins; each needle storage bin is used for storing one puncture needle and can automatically reach a needle head delivery position; the needle head delivery module comprises an electric clamp and a horizontal conveying assembly; the electric clamp corresponds to the needle head delivery positions of the needle head storage module and is used for clamping the puncture needle in the needle storage bin at each needle head delivery position; and the horizontal conveying assembly is used for driving the electric clamp in the axial direction of each puncture needle to enable the puncture needle to be inserted into the needle automatic clamping assembly at the needle replacing position and to be automatically clamped by the needle automatic clamping assembly.

The present invention provides an instrument for anorectal surgery, comprising a hollow main body, a suture junction disposed at a rear end of the main body and an inserting guider disposed at a front end of the main body. At an operating position, all or part of mucosa and tissues can get through the main body. At least one opening is made in the wall of the main body, and all or part of the mucosa and tissues can get into a hollow interior of the main body through the opening. Because of the openings on the wall of the main body, the present invention can be operated to perform the anorectal surgery of local and non-annular cutting, which facilitates a quick surgical operation, further allays the pain of the patients, and a better operation effect is obtained.

A system for treating posterior pelvic organ prolapse according to one aspect of the present invention comprises a cape for supporting a posterior organ (such as a rectum and / or bowel) that has prolapsed into a vagina, a plurality of support arms coupled to the cape, and a plurality of fasteners for attaching the support arms to a portion of the pelvic sidewall. Each one of the plurality of fasteners is coupled to a respective one of the plurality of support arms. The system may further include a tension adjustment system. Among other things, the present invention provides an integrated, pre-fabricated solution to treating posterior pelvic organ prolapse. All components of the system can thus be quickly deployed, without the need to build the repair system piecemeal. Additionally, the present invention provides a completely transvaginal solution to posterior pelvic organ prolapse, is easier for less experienced surgeons to perform, and poses far less risk of injury or death to the patient.

The invention discloses an optomagnetic integrated puncture operation navigation platform. The optomagnetic integrated puncture operation navigation platform is provided with a mark reference system,a register probe, a puncture needle and a navigation terminal, electromagnetic space coordinates of a mark point, a reference point and the tip end of the puncture needle in a electromagnetic space coordinate system and optical space coordinates of the mark point, the reference point and the tip of the puncture needle in an optical space coordinate system are positioned by the register probe, themark reference system and a calibration system on the puncture needle correspondingly. A scanning image including the mark point and an anatomical position are obtained for three-dimensional reconstruction, and thus a three-dimensional image is obtained. The navigation terminal determines virtual space coordinates of the tip of the puncture needle according to the three-dimensional image and the electromagnetic space coordinates and the optical space coordinates of the mark point, the reference point and the tip of the puncture needle, and the puncture needle is displayed in the three-dimensional image according to the virtual space coordinates.

The invention discloses a novel balloon expandable stent conveying system which comprises a balloon, an inner tube, a far-end outer tube, a corrugated tube, a soft head and a stent pushing tube. The inner tube runs through an inner cavity of the far-end outer tube and an inner cavity of the balloon; a combination body of the soft head and the inner tube is placed and connected into the neck part of the far end of the balloon; the farthest end of the far-end outer tube is placed into the neck part of the near end of the balloon and is connected with the neck part of the near end of the balloon; the balloon is of a one-layer or multilayer structure; and at least one layer of the balloon is made of a material with a micropore structure. The stent conveying system disclosed by the invention has a simple structure, also has the functions of pre-expanding a narrow tube cavity and conveying a stent, has good operation and control performance and strong passing performance, is rapid and convenient to operate and is cost-saving. When adopting the ePTFE (expanded polytetrafluoroethylene) material with the micropore structure, the balloon does not need to be folded and is simple to process; and time of sucking liquid in the balloon is short, the blood supply of far-end blood vessels is high in recovery speed, the balloon is changed into a cylinder shape with a small diameter after the liquid is pumped out, and the blood vessels cannot be damaged or the stent shifting cannot be caused in the retracting process. The balloon with the double-layer structure has higher pressure resistance capacity.

The present invention provides an instrument for anorectal surgery, comprising a hollow main body, a suture junction disposed at a rear end of the main body and an inserting guider disposed at a front end of the main body. At an operating position, all or part of mucosa and tissues can get through the main body. At least one opening is made in the wall of the main body, and all or part of the mucosa and tissues can get into a hollow interior of the main body through the opening. Because of the openings on the wall of the main body, the present invention can be operated to perform the anorectal surgery of local and non-annular cutting, which facilitates a quick surgical operation, further allays the pain of the patients, and a better operation effect is obtained.

The invention relates to the technical field of orthopaedic medical treatment instruments, in particular to a special tool used by an internal and external fixation instrument for orthopaedic medical treatment. The special tool comprises a three-jaw annular grab, a tapping drill, a graduated scale, a drill fixture, a quick connector, a nail grasping elastic cannula, a screwing-out pipe, a left-right revolving straight type screwing rod or a left-right revolving ratchet screwing rod, and a short screwing rod or a long screwing rod, wherein the three-jaw annular grab is used for maintaining a fracture alignment after restoration; the tapping drill is used for drilling a threaded bone hole on the fracture alignment position; the graduated scale is used for measuring the depth of the threaded bone hole; the drill fixture is used for chucking the tapping drill; the quick connector is used for quickly replacing the drill fixture; the nail grasping elastic cannula is used for transferring a bone-joining nail or a bone-joining needle into the threaded bone hole; the screwing-out pipe is used for screwing out the broken bone nail or the broken bone needle which is positioned in the threaded bone hole; the left-right revolving straight type screwing rod or the left-right revolving ratchet screwing rod is matched with the screwing-out pipe; and the short screwing rod or the long screwing rod is matched with the left-right revolving straight type screwing rod or the left-right revolving ratchet screwing rod. The special tool used by the internal and external fixation instrument for the orthopaedic medical treatment can reduce the iatrogenic injury as much as possible, shorten the operation time, relieve the patient pain and ensure the rapidity and the safety of the operation.

The invention relates to a gun type circumcision anastomat which comprises a gun type outer shell and a circumcision suture mechanism. The gun type outer shell comprises a fixed handle portion and a movable handle portion, the movable handle portion comprises a movable handle and a tension spring, one end of the movable handle is connected with the fixed handle portion through a rotating shaft, and the fixed handle portion is provided with a handheld portion matched with the movable handle. The circumcision suture mechanism is arranged on the fixed handle portion, and when the movable handle rotates in a direction close to the handheld portion, the movable handle is capable of promoting a nail pushing piece in the circumcision suture mechanism to direct push suture nails out of a nail chamber and simultaneously promoting the nail pushing piece in the circumcision suture mechanism to drive a columnar bladed incision knife to complete linear synchronous incision. The gun type circumcision anastomat has advantages that by the single handle for linear triggering, on the one hand, single-hand operation can be realized, and convenience in operation is achieved, and on the other hand, according to a linear force applying principle, accuracy in incision and anastomosing is improved, and surgical standardization, safety, quickness and convenience are realized.

The invention relates to a LD pumping high-power 2Mum wavelength medical Tm LASER, consisting of a LD pumping system, a laser crystal rod, an optical resonant cavity, a water-cooling system, a drying system, a focusing mirror and an optical fiber. The LD pumping system takes GaAlAs semiconductor laser array as a pumping source, comprising 3 groups of LD array modules in total; the laser crystal rod adopts a Tm-doped bonding crystal rod; the optical resonant cavity is a planoconcave cavity; the water cooling system can make the laser crystal rod operate under low temperature; the drying system is a nitrogen-filled drying box in which the complete laser optical path is arranged; the laser is coupled to the optical-fiber output by the focusing mirror. The invention has the advantages that 2Mum wavelength laser can be exported high efficiently, vaporized incision of prostate and other soft tissues can be conducted under water environment efficiently, the operation is rapid, and the manipulation is easy, and damages are avoided; the invention can be extensively applied to the clinic fields of urinary surgery, orthopaedics, gynecopathy, dyspepsia and various minimally invasive operations, etc.. Therefore, the invention is an ideal medical LASER.

The invention relates to an expandable spinal fusion cage comprising an outer layer expansion tube (1) and a cylindrical inner core (2) located in the outer layer expansion tube (1). The outer layer expansion tube (1) is fixedly connected with one end of the cylindrical inner core (2); the outer layer expansion tube (1) is provided with expansion deformation parts (11) which can expand and deform by the action of external force to form protrusions. The expandable spinal fusion cage can expand and deform by the action of a force application mechanism and the height can be changed according to predetermined dimensions with high precision, so that the accuracy of surgery is improved, surgery can be carried out rapidly and pain is relieved for patients.

The invention provides a needle separating ring special for a circumcision stitching instrument. The needle separating ring is characterized in that the needle separating ring comprises a needle separating ring body which is in an annular belt shape or a gear shape, and the needle separating ring body can comprise side edges. The needle separating ring can enable a common suturing needle to fall off after circumcision, and the defect that the common suturing needle is wrapped by prepuce tissue is overcome.

The invention discloses a surgical robot system based on cloud data technology and an operation method. The surgical robot system comprises a surgical robot host, mechanical arms, a surgical instrument and a camera, cloud data, a surgical doctor, a three-dimensional camera and a three-dimensional display screen; the operation method comprises the following steps: finding previous cases by a surgical robot according to the type of surgery needing to be done, diseases conditions and properties from the cloud; after selecting an optimal scheme, reviewing the scheme by the surgical doctor; in a surgery process, demonstrating each step of operation by the robot after cloud data analysis and learning; after the robot obtains the permission of the surgical doctor, carrying out actual execution, wherein the surgical doctor can interpret the progress at any time to improve the operation. According to the surgical robot system disclosed by the invention, deep learning can be carried out according to surgery big data; the surgical robot capable of automatically performing a surgery task can finally replace a mechanical arm robot to do better, safer, more rapid and more accurate surgeries forhuman beings.

The invention discloses a hysteroscope. The hysteroscope comprises a hysteroscope sheath and an endoscope which is arranged in the hysteroscope sheath, the hysteroscope sheath comprises an inner sheath body and an outer sheath body, the outer sheath body is provided with a water inlet and a water outlet, an operating electrode is arranged in the inner sheath body, a cleaning device is arranged on the side portion of the endoscope, and the cleaning device is driven by a driving device arranged outside the hysteroscope sheath to scrub the surface of the endoscope; a sliding block is movably arranged on the outer sheath body, a suction tube is arranged between the inner sheath body and the outer sheath body, and the sliding block is connected with the suction tube. The cleaning device is arranged on the hysteroscope sheath to clean the surface of the endoscope, the situation that tissue scraps block the view of the endoscope is avoided, and it is guaranteed that an operation is conducted smoothly. Due to the fact that the suction device is arranged, the detached tissue scraps can be sucked out of the uterine cavity, and the situation that the operation sight line is blocked due to the fact that a large amount of tissue floats in the uterine cavity is avoided. A tissue collection tank is designed to be a two-layer solid-liquid separator device, the blood or other biological interstitial fluid and biological tissue are separated, and collection of biological tissue samples is facilitated.

The invention discloses a laparoscope for anti-fogging surgery. The laparoscope comprises a laparoscope body, a cleaning sleeve and a stretchable driving device. The cleaning sleeve comprises a sleeveand a cleaning brush, the inner sleeve wall of the sleeve slidably sleeves the peripheral face of the laparoscope body, a containing cavity is formed in the inner sleeve wall of the end, corresponding to the end of the laparoscope body, of the sleeve, and the containing cavity is in an annular shape coaxially communicated with the inner sleeve wall of the sleeve; the cleaning brush comprises a plurality of bristles, and the multiple bristles are evenly and annularly arranged at the inner wall of the containing cavity and extends to the center of the containing cavity; the stretchable drivingdevice comprises an elastic connecting piece and an annular permanent magnet and an electromagnet which are coaxially arranged at the two ends of the elastic connecting piece; one of the permanent magnet and the electromagnet is connected to the end, away from the containing cavity, of the sleeve and is in movable fit with the laparoscope body, and the other one of the permanent magnet and the electromagnet is connected to the peripheral face of the end away from the laparoscope body. By adopting the laparoscope for the anti-fogging surgery of the structure, it is ensured that laparoscope surgery is performed rapidly and smoothly, and the treatment effect is ensured.

The invention discloses an assembly type skin retractor and belongs to surgical operating instruments. The assembly type skin retractor comprises an arc handle and a plurality of retractors connected with the handle, wherein a slide groove is arranged on the handle from bottom to top from the lower surface of the handle, two positioning strips are arranged on two lateral walls in the slide groove along the arc surface direction, and a plurality of clamping openings are arranged on the upper surfaces of the positioning strips. Positioning blocks sliding on the positioning strips are arranged at the upper ends of the retractors, and positioning protrusions capable of being clamped in the clamping openings are arranged on the two sides of the lower ends of the positioning blocks. The assembly type skin retractor is novel and flexible in structural design. The retractors with corresponding quantity can be installed according to patient needs and operation situations, burden of assistants is reduced, and only one assistant is needed. Additionally, optimal traction force is ensured, constant tension is kept, quick and continuous operations can be ensured, and possibility of complication is reduced.

The invention discloses a balloon dilatation catheter. The balloon dilatation catheter comprises a soft head, a balloon, an inner tube, a far-end outer tube, a transition tube, a hypotube and a catheter handle, wherein a combination body of the soft head and the inner tube is placed in and connected to the far-end neck part of the balloon; the inner tube penetrates through an inner cavity of the far-end outer tube and an inner cavity of the balloon; the farthest end of the far-end outer tube is placed in the near-end neck part of the balloon and is connected with the near-end neck part of theballoon; one or more blood flow guide grooves are formed in the surface of the balloon in the axial direction; and the inner tube is of a multi-layer structure, an outer layer is a macromolecule layerwith gradually changing hardness, a middle layer is a metal net, and an inner layer is PTFE. The balloon is provided with the blood flow guide grooves, so that blood flow cannot be completely blockedwhen the balloon is filled, and damage caused by ischemia of far-end blood vessels and tissue is avoided. The far ends of the balloon and the catheter are very smooth, and the balloon dilatation catheter is good in control performance and high in penetrating through performance, so that the surgery is quick, the cost is saved, and the risk to a patient is low.

In some exemplary embodiments, an ankle replacement prosthesis includes a tibial component which provides a convex bearing surface, and a talar component which provides a concave bearing surface configured to interface with the convex bearing surface of the tibial component to provide a joint of the ankle replacement prosthesis. The tibial component is configured to be attached to a patient's tibia and the talar component is configured to be attached to the patient's talus.

The invention relates to a surgical navigation method based on optical fiber shape sensing. A stereoscopic vision label is installed at the outer tail end of a flexible surgical instrument body of theinner auxiliary optical fiber, the position and posture of the outer tail end of the flexible surgical instrument body are measured through a binocular camera or a multi-view camera, and meanwhile the overall shape of the flexible surgical instrument body is measured through the optical fiber. Then, a positioning system calculates the spatial position and posture of the inner tail end of the flexible surgical instrument body in combination with the position and posture of the outer tail end of the flexible surgical instrument body and the overall shape. A three-dimensional imaging system displays a three-dimensional visual virtual human body on a computer by using a preoperative image; the real posture of the flexible surgical instrument body entering the human body is obtained by combining the position and posture of the flexible surgical instrument, and a surgeon observes the specific position and posture of the flexible surgical instrument through a display screen and operates theflexible surgical instrument to perform an operation, thereby navigating the surgeon in real time during the operation. The method has the advantages of high precision, high reliability and the like.

The invention discloses a single-sequence cervical spine locking steel plate system with a long force arm, made from medical pure titanium or titanium alloy. The single-sequence cervical spine locking steel plate system with a long force arm comprises a bone lamella, bolts and a stop piece. In the single-sequence steel plate of the system, the distance between the upper bolt and the lower bolt of the bone lamella is 18 mm, the centre line of the bone lamella is nailed, and the both ends of the bone lamella are provided with a design of anti-skid teeth, so as to prevent the skidding of the titanium plate; the bone lamella is 10.5 mm wide and 2.5 mm thick, the bolts at the both ends are fixed with an adjustable angle in a 28-degree range, so as to ensure the optimal bolt installation; additionally, the steel plate is 34-40 mm long, wherein one specification is set every 1 mm from 11 mm to 15 mm between a C3 bolt hole and the lower edge of the steel plate. The single-sequence locking steel plate with a long force arm disclosed by the invention is strong in three-dimensional motion stability and anti-skid capacity, and enables operation to become simple and fast because of utilizing single-sequence simplified design, thereby shortening operation time, reducing bleeding amount and keeping injury on soft tissue to a minimum.

The invention discloses a special protective device for oral clinical tooth preparation. The special protective device comprises an expansion unit, a tongue protection unit and a fixing unit, whereinthe expansion unit comprises two motors, two fixed blocks, bidirectional lead screws, two movable blocks, supporting rods and a fixing frame; the two fixed blocks correspond to each other left and right; a groove is formed in the inner side surface of each of the two fixed blocks; each bidirectional lead screw is rotationally connected to the inside of the corresponding groove; threads at the twoends of each bidirectional lead screw are opposite; the two motors are arranged at the top ends of the two fixed blocks respectively; output shafts of the two motors are connected with the top ends ofthe bidirectional lead screws; the two movable blocks are in sliding connection with the grooves in the inner side surfaces of the fixed blocks respectively; screw holes in the side surfaces of the two movable blocks are in threaded connection with the upper ends and the lower ends of the bidirectional lead screws respectively; and each supporting rod is arranged on the inner side surface of thecorresponding movable block. The special protective device for oral clinical tooth preparation is convenient to use and simple to operate, effectively protects a tongue body and facilitates an operation of a doctor.

The invention discloses a breast tumor cutting device. The breast tumor cutting device comprises an operating rod, a drilling assembly, an outer cylinder, a cutting assembly, a deformation driving assembly and a cutter body driving assembly, wherein the operating rod is a hollow rod; the drilling assembly comprises a drill rod and a drill bit, and the drill bit is arranged on the drill rod; the outer cylinder can slidably sleeve an exposed end, and the head and the tail of the outer cylinder are connected with the outer wall of the operating rod to form an accommodating cavity; the cutting assembly comprises a mounting net and a cutter, the mounting net is arranged at an inserting end, and comprises a plurality of elastic mounting strips, one end of each mounting strip is connected to theinserting end, the other end of each mounting strip is a free end, the free ends are inserted into the accommodating cavity, and the cutter can move back and forth along the mounting strips; the deformation driving assembly is arranged in the accommodating cavity and connected with the mounting strips, and can drive the mounting net to expand or contract; and the cutter body driving assembly is arranged on the mounting strips, and can drive a cutter body to move back and forth along the mounting strips. The breast tumor cutting device can quickly cut a tumor, so that the operation time is shortened.

The invention provides a pull type cartilago costalis sheet cutter which comprises a handle, a cutting rod and a cutting head. The handle is connected to one end of the cutting rod. The cutting head is connected to the other end of the cutting rod. A cutting knife is arranged on the cutting head. A blade of the cutting knife can be pulled to cut a cartilago costalis sheet on the surface of cartilago costalis. The cutting rod protrudes to one side. The protruding direction of the cutting rod is opposite to the fitting direction of the cutting knife and the cartilago costalis. The cutting rod protrudes to one side and does not fit a human body any more, only the blade of the cutting knife fits the cartilago costalis, the pull type cutting does not bear the resistance of the human body, and the cutting of the cartilago costalis can be well achieved.

The invention discloses quick disinfection using equipment for emergency of a cutter of the obstetrics and gynecology department. The quick disinfection using equipment comprises a box; a through opening is formed in the top of the box; a shielding mechanism is slidably connected into the through opening; a storing frame is arranged in the box, and a plurality of storing mechanisms are fixedly connected into the storing frame; and a limiting rod is fixedly connected into the box, and the storing frame is slidably connected to the limiting rod in a sleeving mode. The shielding mechanism is opened by pulling out a first plug, then a control mechanism drives a threaded rod to rotate, thus the storing frame is driven to horizontally move, and the position of the needed cutter can be adjusted;and then the cutter is disinfected through a disinfection mechanism, then the cutter is dried and cleaned through a sponge layer, waste disinfection liquid is recycled through a collecting mechanism,thus a medical worker can quickly use the disinfected cutter during emergency advantageously, a patient can be quickly subjected to operation, and the optimum treatment time for the patient is guaranteed accordingly.

The invention discloses an interlocking intramedullary nail, and relates to an interlocking intramedullary nail of which the far end and the near end are provided with oblique interlocking positioning screw holes, is suitable to be used as an implanted interlocking intramedullary nail for internal fixation of fracture of femoral shaft and collum femoris and femoral shaft combined fracture, and can change the interlocking mode at any time in use, namely a standard locking mode or a reestablished locking mode. The interlocking intramedullary nail is provided with a nail shank, the nail shank is provided with the far end and the near end, and the inside of the nail shank is provided with a through hole; the near end of the nail shank is provided with two reestablished oblique interlocking nail holes and a thighbone locking oblique interlocking hole which is obliquely intersected with the center of the adjacent reestablished oblique interlocking nail hole, and outlets of the nail holes are combined into one hole; the far end of the nail shank is provided with a power pressurizing lockhole and a lockhole; skew angles between the two reestablished oblique interlocking nail holes and a central axis of the nail shank are between 48 and 52 DEG; an inclination angle between the thighbone locking oblique interlocking hole and the central axis of the nail shank is between 44 and 46 DEG; and upward inclination angle of the far end of the nail shank is between 4 and 6 DEG, and the inclination angle toward one side of the far end is between 5 and 8 DEG.