82 results about "Intraoperative procedures" patented technology

The invention relates to the technical field of data analysis, in particular to an operating room monitoring system based on intraoperative operation data real-time analysis, which comprises a real-time operation stage identification module, a dynamic weight configuration module, a multi-modal fusion analysis module and an intelligent early warning decision module, wherein the real-time operation stage recognition module generates a stage judgment signal by fusing an instrument movement track feature and an endoscope video stream feature; the dynamic weight configuration module activates a corresponding weight distribution strategy after receiving the stage judgment signal, and establishes a dynamic weight mapping relationship among the heterogeneous data; the multi-modal fusion analysis module performs time sequence alignment and weighted fusion on the heterogeneous data based on the dynamic weight mapping relationship, and outputs a multi-dimensional risk assessment vector; and the intelligent early warning decision module analyzes the multi-dimensional risk assessment vector and associates the context of the operation process, and triggers a differentiated alarm mode according to the risk grade gradient.

The invention relates to the field of medical data analysis, in particular to an interventional therapy patient perioperative period pain data analysis method and system. An interventional therapy patient perioperative period pain data analysis system comprises a data acquisition module, a weight acquisition module, a pain prediction module and a pain monitoring module. According to the method, a standardized multi-source data coding system is established, pre-operative static characteristics and intra-operative dynamic time sequence signals are subjected to nonlinear weight calculation based on mutual information coefficients, complex threshold correlation and interaction effects among parameters are captured, and then a parallel architecture of an LSTM network and a static weighting layer is adopted; deep correlation information of a time sequence dependence mode generated by intraoperative operation and basic background parameters is extracted, the recognition ability of the model for high-risk patients is improved, and high-precision prediction of the pain intensity and type in the perioperative period is achieved.

The invention relates to a nerve monitoring monopole electrocoagulation hook for thyroid surgery and a surgical instrument, and relates to the technical field of medical instruments.The electrocoagulation hook comprises a nerve detecting piece installed at the front end of a handle, an insulating pipe body is arranged in the nerve detecting piece, a smoke suction channel and a sliding hole are formed in the insulating pipe body, and a rod body is slidably inserted into the sliding hole and connected with an external power source; the far end of the rod body is provided with a hook body bent relative to the rod body, and the surface, deviating from the smoke suction channel, of the hook body forms an electrocoagulation face. The hook body is provided with a first-stage heat conduction assembly, avoids the electrocoagulation surface and is in heat conduction connection with the electrocoagulation surface; one end of the second-stage heat conduction assembly is in heat conduction connection with the first-stage heat conduction assembly, and the other end of the second-stage heat conduction assembly extends into the smoke suction channel. Through the combined design of two-stage heat conduction and heat dissipation, heat generated by the electrocoagulation surface during coagulation and cutting can be rapidly conducted through the heat conduction assembly and is dissipated and taken away through cooperation of the smoke suction channel, so that the diffusion risk of the heat in adjacent nerves and tissues is reduced to a certain extent, and the operation safety and stability in an operation are improved.

The invention relates to the field of intelligent medical treatment, and discloses a hospital integrated platform system based on artificial intelligence, which comprises the steps of extracting current patient identification information, identifying a surgical patient in an anesthesia state in real time, and automatically associating a preoperative electronic medical record with an intraoperative anesthesia plan; based on an artificial intelligence semantic recognition model, performing image character extraction and semantic understanding on parameter contents set in real time in a respirator equipment screen; constructing a cross-system risk factor graph according to the semantic difference between the set parameters and the system identification, and performing risk linkage scoring on the operation behavior in the operation in real time; calling a parameter evolution path under the previous similar operation mode, and carrying out analogy modeling by combining the anesthesia depth of the current patient, the physiological data and the intraoperative stage; and when it is confirmed that strategy level abnormity exists in the setting, the early warning level and the display form are dynamically adjusted based on the operation equipment type, the setting personnel role and the load intensity of the current stage. The system has the advantage of improving the intelligent level of a hospital.

The invention discloses a posterior capsule polisher for cataract surgery, and relates to the technical field of ophthalmologic surgical instruments, the polisher comprises a handle body, the front end of the handle body is provided with a polishing part for polishing a posterior capsule, and the front end of the handle body is fixedly connected with a light guide part; a light guide assembly is arranged between the outer side of the light guide part and the outer side of the handle body, and the light guide assembly achieves light guide and illumination for intraoperative operation by extruding a piezoelectric crystal arranged in the light guide assembly. According to the capsular membrane polisher used after the cataract operation, medical staff can extrude the liquid storage soft bag by pressing the elastic pressing piece, when the liquid storage soft bag is extruded and deformed greatly, much perfusate flows out, when the liquid storage soft bag is deformed slightly, little perfusate flows out, and when extrusion is not conducted, the perfusate flows out according to the set normal outflow amount; and the outflow amount of perfusate can be adjusted according to needs through the elastic pressing sheet, so that the perfusate can be better perfused into the eyes.

The utility model relates to the field of medical instruments, and discloses a working cannula for cervical endoscopic surgery, which comprises a cannula main body provided with a through hole, a first opening of the cannula main body is obliquely arranged, one side, close to a second opening of the cannula main body, of the first opening is defined as a first side, and one side, far away from the second opening, of the first opening is defined as a second side; the sleeve main body is provided with a limiting thread above the first opening, and the limiting thread is matched with the limiting ring to adjust and control the working depth of the sleeve main body; the limiting threads are arranged and matched with the limiting ring, so that the movement of the cannula body can be well limited, the depth of the cannula placed in the intervertebral space is controlled and stabilized during operation, the situation that the cannula body is too deep to penetrate the rear wall of the intervertebral disc and damage the spinal cord is avoided, the operation risk is reduced, and related complications of spinal cord injury are reduced.

The invention belongs to the technical field of medical instruments, and particularly discloses a gastroscopy auxiliary device for the digestive system department. The insertion tube clamping mechanism is arranged on the supporting plate and is far away from the pillow cushion; the forehead fixing mechanism and the posterior cranium fixing mechanism are arranged on the supporting plate and are positioned on the front side and the rear side of the pillow cushion; the clamping forceps are arranged on the lower side of the supporting plate and is far away from the pillow cushion; the connecting rod is arranged at the front end of the supporting plate; the insertion pipe clamping mechanism comprises edge grooves symmetrically formed in the two edges of the supporting plate, positioning driving shafts rotationally arranged in the two edge grooves correspondingly, and two L-shaped swing arms with the lower ends rotationally connected to the two positioning driving shafts correspondingly. According to the invention, the pedal control system is innovatively adopted, the axial advance and retreat control of the insertion tube part is transferred from the hand part to the foot part, and a specially designed clamping auxiliary propulsion mechanism is adopted, so that a doctor can conveniently and stably install the insertion tube part into the auxiliary mechanism by only one hand, and the whole process from preoperative installation to intraoperative operation by one person is realized.

This invention discloses an ultrasound-guided minimally invasive Achilles tendon suturing navigation device, belonging to the field of medical device technology. It includes a clamp body structure and two navigation mechanisms. The clamp body structure includes a connecting shaft, a clamp handle, and clamp heads. The clamp handle and clamp heads are connected by the connecting shaft. The clamp heads are located on the clamp handle, and there are two clamp handles and two clamp heads. The two navigation mechanisms are located on the two clamp heads respectively, and the two navigation mechanisms on the two clamp heads are interconnected. In use, ultrasound is used preoperatively to determine the course of the sural nerve and its accompaniment to the small saphenous vein to avoid intraoperative injury. During the procedure, the position and thickness of the Achilles tendon are confirmed under ultrasound guidance. Simultaneously, the navigation mechanism is passed through the Achilles tendon at an appropriate position, fixed, and the needle core is removed. Finally, the suture is passed through a cannula.

The invention relates to the field of medical instruments, and provides a conicity-locked osseointegration prosthesis. The osseointegration prosthesis comprises an implantation prosthesis, a percutaneous device and an abutment screw, a plurality of fixing ridges are arranged on the periphery of the implantation prosthesis, intraosseous fixation is achieved in a press-fit mode, a taper locking structure is combined to prevent the implantation prosthesis from sinking, and it is ensured that the position of the implantation prosthesis is fixed after implantation; a flushing hole communicated with the internal flushing cavity is further formed in the periphery of the implant prosthesis, and the implant prosthesis can be used for injecting medicine into the medullary cavity, implanting bone materials and the like or used for follow-up flushing treatment for intramedullary infection possibly occurring in the later period. The percutaneous device and the implanted prosthesis are connected through the anti-rotation structure and the taper locking structure, the percutaneous section has the surface state formed through surface treatment, stimulation to surrounding soft tissue is reduced, the anti-infection capacity is improved, and the percutaneous sealing effect is improved. By optimizing the implantation structure and the percutaneous interface design, the intraoperative operation difficulty is reduced, the intraoperative time is shortened, meanwhile, the percutaneous stoma is reduced, and the infection risk is reduced.

A method for housing a reusable portion of an oximeter device in a sheath includes providing the oximeter device as a probe unit and a laparoscopic tube separated from each other. The probe unit is handled by a first operator in a nonsterile environment and the laparoscopic tube is handled by a second operator in a sterile environment. The first operator connects the probe unit and the laparoscopic tube to form the oximeter device. The sheath is coupled to the laparoscopic tube in a folded configuration and is pulled by the second operator to enclose the probe unit. The oximeter device is in the sterile environment when the probe unit is in the sheath. The oximeter device is for use in an intraoperative procedure and the sheath inhibits the probe unit from contacting contaminants so that the probe unit is reusable, whereas the laparoscopic tube can be disposed of.

This utility model relates to a tissue separation device for spermatic vein ligation surgery, belonging to the field of male infertility surgery and medical devices. The separation device includes an intermediate pad with a central groove for accommodating a movable soft coil; hooks are provided on the opposite end face of the intermediate pad opposite the groove. The hooks bend downwards on both sides, effectively fixing the external spermatic fascia and cremaster muscle, fully exposing the surgical area. The silicone soft coil can be inserted between the blood vessels (testicular artery, pampiniform plexus) and the cremaster muscle, fully exposing the vessels to be ligated. The tissue separation device for spermatic vein ligation surgery provided by this utility model uses a medical-grade silicone soft coil, which has good biocompatibility, allows for flexible intraoperative operation, and its softness avoids damage to blood vessels.

The utility model provides a surgical instrument table which comprises fixing assemblies installed on the two sides beside a surgical bed respectively, supporting assemblies are installed in the fixing assemblies in a penetrating and inserting mode, instrument tray assemblies are installed at the top ends of the supporting assemblies, U-shaped fasteners are adjusted to the abdomen of a patient, the positions of the U-shaped fasteners are fixed by screwing abutting bolts, and then the U-shaped fasteners are fixed. The use height of the supporting rod is adjusted after the supporting rod is inserted into the inserting hole, then the abutting bolt is screwed, the supporting rod can be fixed in the mode, then the instrument tray body is arranged on the top of the supporting rod, the top end of the supporting rod is inserted into the sleeve, and therefore installation of the instrument table is completed. Due to the fact that the instrument tray body is arranged at the abdomen of the patient, operation in the operation cannot be affected when the head of the patient is subjected to an operation, meanwhile, the instrument table can ascend and descend along with an operating bed, instruments can be conveniently taken in the operation, the instrument table is easy and convenient to disassemble and assemble, and meanwhile the instrument table does not occupy a large space after being disassembled and is convenient to store.

The utility model discloses an arm infusion port placing operation table which comprises a base, a treading control board arranged on one side of the base, a lifting supporting table arranged on the base, a bed frame arranged on the supporting table, a bed board arranged on the bed frame in a sliding mode, a groove formed in one side of the bed board, and a lifting device arranged on the base, wherein a control circuit of the lifting supporting table is electrically connected with the treading control board through a wire. A groove is formed in the bed frame, an arm supporting plate is arranged in the groove, the upper side of the arm supporting plate is rotationally connected with the bed frame, a bendable hinge frame is arranged on the lower side of the arm supporting plate, one end of the hinge frame is rotationally connected with the bed frame, and an adjusting mechanism is arranged between the bed frame and the bed board. The attention concentration degree of doctors in the surgical operation process is improved, and the surgical efficiency is improved.

The invention provides a rapid exchange stent conveying device and relates to the technical field of stent conveying, the rapid exchange stent conveying device is used for releasing a stent to the far end along a guide wire, and the conveying device comprises an outer tube and an inner tube inserted into the outer tube; the far end of the inner tube is provided with a guide wire inlet, and the side wall is provided with a guide wire outlet; the outer tube is provided with a receding part extending to the far end, and the receding part is used for receding and leading out the guide wire extending out of the guide wire outlet so that the outer tube and the inner tube can move relatively, and the inner tube can push the support to be released from the far end of the outer tube. The length, extending towards the near end of the inner tube, of the guide wire is shortened, rapid exchange can be achieved, the intraoperative operation time is shortened, the guide wire is prevented from being clamped between the outer tube and the inner tube, and then it is ensured that the stent can be smoothly released.

The invention discloses a standardized consumption path management method and system based on disease categories, and belongs to the technical field of medical equipment and consumable management, and the method comprises the steps: obtaining related data of a target operation case, constructing an operation characteristic parameter set, and building a typical clinical path knowledge base matched with the corresponding disease category; historical operation video data of a target doctor are analyzed, a deviation value sequence of the actual consumable usage amount and a standard consumable baseline value is counted, and a dynamic skill score value of the target doctor is calculated in combination with the complication occurrence rate and the intraoperative operation fluency so as to correct an allowable fluctuation interval of the standard consumable baseline value; and dynamically associating the corrected interval with the knowledge base to form a personalized consumption guidance scheme. According to the method, a multi-modal data analysis and dynamic skill evaluation algorithm is adopted, a standard consumable baseline interval can be automatically corrected, a personalized consumption guide scheme can be generated, accurate balance between consumption and doctor skill adaptability is achieved, resource waste is reduced, and operation safety is improved.

The invention discloses a mobile CBCT (cone beam computed tomography) rotation motion compensation method and system, and the method comprises the steps: collecting rotation shaft motion data through a motion monitoring module, analyzing and judging the motion stability, adjusting the rotation speed of a driving mechanism through a PID (proportion integration differentiation) control algorithm when the motion is not stable, predicting a motion track through a Kalman filtering model to generate an exposure triggering delay signal, and outputting the exposure triggering delay signal. The X-ray exposure intensity is dynamically adjusted, and dynamic synchronous control is realized through closed-loop feedback; the system comprises a rack, a rotating shaft, a driving mechanism, a motion monitoring module, a motion compensation module and an X-ray adjusting unit, and a limiting mechanism and a buffering mechanism are additionally arranged to improve stability. According to the scheme, through real-time monitoring and dynamic compensation of the motion data, the sub-degree synchronization precision of the rotation motion and the exposure process is achieved, the collision noise is reduced to 55 dB or below, the vibration acceleration is reduced to 3 g or below, the image collection quality and the equipment operation stability are remarkably improved, and the method is suitable for mobile scenes such as emergency treatment and operation.

The invention relates to a caesarean section dynamic isolation system, and belongs to the technical field of medical instruments, the caesarean section dynamic isolation system comprises a self-adaptive sealing assembly, and the self-adaptive sealing assembly adopts a shape memory composite structure to realize dynamic fitting of organ curved surfaces in an operation, so that the exposure stability of an operation field is remarkably improved; a fluid optimization channel and an efficient seepage management module with a self-cleaning function are integrated, so that mixed liquid of blood and amniotic fluid can be quickly removed, and blockage is avoided; the tactile feedback supporting mechanism inhibits excessive traction operation in real time through multi-dimensional mechanical perception and nonlinear damping adjustment, and sensitive tissue is protected; the central control module fuses deformation, seepage and mechanical multi-mode data, and full-process intelligent collaboration of intraoperative operation is achieved. The system can adapt to anatomical differences of patients, the operation time is shortened while the clear operation field is guaranteed and the infection risk is reduced, rapid deployment and convenient sterilization are both considered through the modular design, accurate and reliable technical support is provided for the complex cesarean section operation, and the operation safety and operation efficiency are remarkably improved.

The utility model provides a double-guide plate for assisting an apical operation, and belongs to the field of dental pulp pathology in oral medicine. The double-guide guide plate comprises a tooth supporting part and a double-guide guide part; the tooth supporting part comprises a tooth supporting guide plate, and the tooth supporting guide plate wraps the surface of a tooth body and is tightly attached to the surface of the tooth; the double-guide part comprises two parallel guide tubes, and the two guide tubes are connected with the tooth supporting guide plate and used for guiding guide legs on the two sides of the dental handpiece. According to the utility model, the dental handpiece can be guided to be accurately positioned and cut; a drill point used in an operation and cortical bones in an operation area cannot be blocked by sight, and observation and water spraying cooling during the operation are facilitated; when the apex flap turning operation is carried out, the opened gingival flap can be put on the tube wall of the guide tube, so that the operation in the operation is facilitated, the damage of traction to the gingiva is reduced, and the soft tissue can be recovered as soon as possible.

A method for housing a reusable portion of an oximeter device in a sheath includes providing the oximeter device as a probe unit and a laparoscopic tube separated from each other. The probe unit is handled by a first operator in a nonsterile environment and the laparoscopic tube is handled by a second operator in a sterile environment. The first operator connects the probe unit and the laparoscopic tube to form the oximeter device. The sheath is coupled to the laparoscopic tube in a folded configuration and is pulled by the second operator to enclose the probe unit. The oximeter device is in the sterile environment when the probe unit is in the sheath. The oximeter device is for use in an intraoperative procedure and the sheath inhibits the probe unit from contacting contaminants so that the probe unit is reusable, whereas the laparoscopic tube can be disposed of.

The invention relates to the technical field of surgical instrument pollution detection, in particular to a surgical instrument medullary cavity expander residue pollution data analysis method and system.The structural pollution invasion degree of a medullary cavity expander is analyzed on the basis of spiral structure data and residue detection data; based on the spiral structure data and the intraoperative operation data, the dynamic pollution load degree of the medullary cavity expander is analyzed; according to the structural pollution invasion degree analysis result and the dynamic pollution load degree analysis result of the medullary cavity expander, the residue pollution risk of the medullary cavity expander is evaluated; and carrying out early warning on replacement of the medullary cavity expander according to the residue pollution risk assessment result of the medullary cavity expander. The cross infection risk of surgical instruments can be avoided, and the service life of the surgical instruments is prolonged.

The invention relates to the technical field of task management, in particular to a heart intervention physiological signal intelligent analysis method based on multi-source data fusion. The method comprises the following steps: acquiring multi-source heart data, and performing intervention operation event marking on the multi-source heart data to obtain operation marking data; performing multi-source feature construction according to the operation mark data to obtain multi-source feature data; obtaining operation process data; performing stage flow chart construction according to the operation process data and the multi-source feature data to obtain stage flow chart data; and performing load budget calculation according to the stage flow chart data to obtain stage load data so as to perform cardiac intervention physiological signal reminding operation. According to the method, the multi-source physiological signals are structurally associated with the intraoperative operation process, a quantifiable stage load budget model is constructed, and the process management precision and the system response capability of the operation process are effectively improved in combination with a graph structure propagation mechanism.

The invention belongs to the technical field of carotid artery catheterization, and particularly relates to a rat and mouse carotid artery catheterization drug delivery device and a model establishment method. The carotid artery indwelling catheter administration device comprises a 34G medical thin needle head, a 1ml injector, a PP tube with the outer diameter of 0.2 mm and the inner diameter of 0.1 mm, and an in-vitro injection pump; one end of the PP tube is nested in the 34G medical thin needle head, the PP tube and the 34G medical thin needle head are sealed through animal tissue glue, and the 1ml injector is connected with the in-vitro injection pump. According to the carotid artery catheterization drug delivery device for the rats and the mice, the pipelines are thinner, the device can be matched with an in-vitro injection pump, operation in an operation is easy, convenient and rapid, the complication rate and the death rate of carotid artery catheterization are low, the drug delivery effect is stable, repeatability is high, and a carotid artery catheterization drug delivery model for the rats and the mice is established on the basis of the device.

The invention relates to the technical field of medical instruments, in particular to a special cardiac surgery head frame with a multi-body-position fixing structure, which comprises a mounting frame, a rotating rod is rotatably connected to the inner wall of the mounting frame, two round tubes are rotatably connected to the outer wall of the rotating rod, and a first fixing block and a second fixing block are fixedly connected to the outer walls of the round tubes respectively. Electromagnets are fixedly connected to the positions, corresponding to the first fixing block and the second fixing block, of the inner wall of the mounting frame, and through magnetic attraction control and arc-shaped limiting block design, switching of three modes of synchronous rotation of the head and the body, independent rotation of the head and independent rotation of the body is achieved; when the head is placed, a conical linkage structure is triggered by means of gravity, a supplementary air bag is extruded to supply air to a fixed air bag, placing, namely clamping and air bag attaching to the head are achieved, the risk of pressure sores is reduced, a fourth spring can drive the air bag to automatically return air and reset, manual operation is not needed, and operation is convenient. And the operation interference during the operation is reduced.

This invention discloses a continuous surgical instrument, comprising an end-effector module, a continuous module, a rotation module, and a drive module. The end-effector module includes a joint connector, a rotating base, and surgical instruments. The continuous module includes a distal vertebra, a vertebral intervertebral disc, and a proximal vertebra. The drive module includes a drive base and, mounted on the drive base, an instrument opening / closing drive module, an end-effector rotation drive module, a continuous module bending drive module, and a rotation drive module. The instrument opening / closing drive module drives the opening and closing motion of the end-effector; the end-effector rotation drive module drives the rotation of the rotating base; the continuous module bending drive module drives the bending of the continuous module; and the rotation drive module drives the rotation of the rotating module. This continuous surgical instrument offers high flexibility in its end-effector, effectively increasing intraoperative operational flexibility and accessibility to the surgical space, and better meeting various surgical needs.

The invention discloses a malignant melanoma sentinel lymph node biopsy system, method and application based on SPECT-Hololens. A preoperative preparation module comprises a data acquisition module, a three-dimensional reconstruction module and a preoperative planning module; the data acquisition module is used for at least acquiring SPECT image data of a patient; the three-dimensional reconstruction module is used for generating a three-dimensional model; the preoperative planning module is used for observing the three-dimensional model through HoloLens, determining the position of a sentinel lymph node and planning an operation path; the intraoperative operation module comprises a HoloLens head-mounted device worn by a doctor, a registration module and a positioning module, a three-dimensional model superposed on a patient is observed through HoloLens, the three-dimensional model is navigated to a sentinel lymph node position for marking and positioning in real time, and accurate positioning information is provided under the guidance of mixed reality; the postoperation processing module is used for assisting postoperation detailed analysis and collecting key data including operation time, intraoperative details, operation type improvement, experience action improvement and the like.

The invention discloses a preoperative positioning and navigation device for abdominal wall liposuction and abdominal muscle shaping. The preoperative positioning and navigation device comprises a development positioning film, a surgical navigation film and a data conversion module, and a CT recognizable high-density linear array is arranged on the surface of the developing positioning film. And the surgical navigation membrane is loaded with a visual mark corresponding to the space of the developing positioning membrane, and is provided with a pressure sensing unit, so that the liposuction depth can be fed back in real time. And the data conversion module is used for mapping the CT image coordinates to a navigation film entity mark and carrying out space mapping on the CT image coordinates to correspond to the entity mark on the navigation film, so that precise positioning of the liposuction depth and range is realized. The device has the advantages that by applying the technology, the accuracy and safety of intraoperative operation are ensured, so that postoperative complications are reduced, and the operation quality is improved.

The invention relates to the technical field of medical auxiliary instruments, in particular to a multi-mode-based adaptive positioning system for the left upper limb of a patient in coronary intervention, and the system comprises a collection module which is used for collecting an operation scene image and physical sign data of the patient; the processing module is used for determining an initial placement position of the left upper limb of the patient; determining a surgical operation time period and a corresponding surgical operation space region, and determining an intra-operative operation interference degree based on overlapped pixel points of an upper limb supporting plate region and the surgical operation space region in each surgical scene graph in the surgical operation time period and a position movement factor of an operator; determining an upper limb compression index of the patient in the surgical operation period; determining a target adjustment value based on the intraoperative operation interference degree and the upper limb compression index; the positioning module is used for inputting the target adjustment value into a multi-shaft electric push rod support controller so as to control the multi-shaft electric push rod support to adjust the upper limb supporting plate area to the target position. The position of the supporting plate in coronary artery interventional therapy can be dynamically adjusted.

This invention relates to the field of medical devices, specifically to a radioactive particle implantation needle for interventional radiology of tumors. The needle includes an implantation needle body with a delivery channel along its length. A material storage slot communicating with the delivery channel is located in the middle of the implantation needle body. The material storage slot contains a supply compartment with a particle placement cavity. A sealing mechanism for sealing the particle placement cavity is located at the bottom of the supply compartment. The supply compartment also contains a compression mechanism for compressing radioactive particles towards the bottom of the particle placement cavity. This invention employs a detachable integrated structure for the implantation needle body and supply compartment, allowing for pre-loading of particles before surgery. This eliminates the need for manual loading of particles into the delivery channel during surgery using external tools, reducing intraoperative steps. The fixing bolts and threaded holes enable quick assembly and disassembly, further shortening preoperative preparation and surgical time, and improving operational convenience.

The present invention discloses an intracranial puncture guide positioning instrument, comprising a base, a positioning guide rod, an auxiliary guide rod, a right-angle triangular telescopic ruler, an I-shaped ruler, and a T-shaped ruler; the base comprises a base, a pillow support assembly, a front nail assembly, and a base main rod; the pillow support assembly is mounted on the base; the two ends of the base main rod are respectively mounted on the pillow support assembly and the front nail assembly; a first puncture channel is formed on the positioning guide rod, and a first tenon is mounted on both ends; a second tenon is mounted on the end of the auxiliary guide rod; a first groove adapted to the first tenon is formed at one acute angle of the right-angle triangular telescopic ruler, and a second groove adapted to the second tenon is formed at a right angle. The present invention can achieve precise positioning and guidance of intracranial targets, has a simple structure, and is easy to operate. In particular, the main frame is located at the midline, which has little obstruction to intraoperative operations, greatly facilitating the operator's operation.

The present invention relates to a connecting device and a posterior occipito-cervical internal fixation system. The connecting device includes a connecting seat, a connecting member, and a locking member. The connecting seat is provided with two receiving holes, and the center lines of the two receiving holes are arranged at an included angle. The connecting member is rotatably inserted into the receiving hole. One end of the locking member is inserted into the receiving hole, and the locking member is used to lock or loosen the connecting member. The above-mentioned connecting device avoids bending of the connecting member, ensures the strength and use effect of the connecting member, and the angle adjustment of the connecting member is simpler and more labor-saving, which is convenient for intraoperative operation.