30results about How to "Reduce bleeding" patented technology

The application relates to the photovoltaic technical field, in particular to a solar printing screen structure, a fusing equipment thereof and a processing method, which comprise an electrode pattern, a main grid pattern line, a warp and a weft, the warp and the weft are woven to form a printing screen, a mesh hole is formed between two adjacent warps and two adjacent wefts, the warp is parallel to the main grid pattern line, the main grid pattern line is symmetrically arranged on the two sides of the electrode pattern, a main grid pad point is located in the electrode pattern, and the part of the warp in the coverage range of the electrode pattern is subjected to fusing treatment outside the coverage range of the electrode pattern. The application has the effects of improving the wear resistance of the printing screen and improving the conversion efficiency of the battery.

This utility model relates to the field of medical device technology and discloses a dressing change kit for infants and young children with persistent seepage at deep vein catheter insertion sites. The kit includes a dressing bag, an inner wall with a sterilization pack, a skin protective dressing, an exposed catheter patch, and a sterile gauze sleeve. Elastic strips are fixedly connected to both the front and back sides of the sterile gauze sleeve. A hemostatic component for the puncture site and continuous bleeding is provided on the inner wall of the dressing bag. This hemostatic component includes a stretchable adhesive tape, the outer side of which is placed on the inner wall of the dressing bag. A pressable circular plate is fixedly connected to the bottom of the stretchable adhesive tape. In this utility model, the operator passes the catheter through the skin protective dressing, the exposed catheter patch wraps around the dialysis catheter, and then the dialysis catheter is inserted into the sterile gauze sleeve, thus securing the dialysis catheter and achieving fixation of the catheter, which cannot be cut.

The present application relates to a kind of anastomosis equipment.The anastomosis equipment includes repair assembly and anastomat;Repair assembly includes at least one patch, various the patch is respectively used for different operation;Anastomat includes shaft assembly, anvil and nail bin, anvil and nail bin are connected to shaft assembly, anvil and nail bin can be relatively closed, various patch is used to install in anvil or nail bin, anvil and nail bin are configured to operate to anastomosis position, and patch is applied to corresponding anastomosis to achieve occlusion and reinforcement by operation.This application at least one patch, so as to cooperate with anvil and nail bin, so that various patch is adhered to corresponding anastomosis under its corresponding operation, so as to reduce the proportion of stomal fistula and bleeding at incision, improve the reliability and adaptability of anastomosis equipment.

This invention discloses a hysteroscopic plasma snare device, comprising an operating handle, an operating ring electrode rod, a plasma coil, a basket, and a coagulation electrode. The operating ring is fitted onto the operating handle, the electrode rod is located at one end of the operating handle, and the plasma coil is located at one end of the electrode rod. The plasma coil is controllably contracted within the electrode rod. The basket for retrieving excised tissue is located on the plasma coil, and the coagulation electrode is located at the end of the plasma coil, allowing for controlled coagulation at the tissue excision site. Advantages include: supplying physiological saline to the plasma coil at one end of the electrode rod to generate plasma for excision of the affected tissue; ease of use and preservation of the excised tissue; using the basket to hold the excised tissue for complete removal, facilitating pathological analysis; and timely coagulation at the excision site using the coagulation electrode, reducing postoperative complications and avoiding equipment changes during surgery, making it convenient and quick to use.

The application discloses a kind of protein sponges of fast hemostasis and preparation method and application thereof.The protein sponge is prepared by modified protein irradiation crosslinking, and the structural formula of the modified protein is as shown in formula I: R1 is substituted alkyl;Substituted substituent group of substituted alkyl is selected from one or more of carboxyl, carbonyl, amido, amino, ester group;R2 is group containing carbon-carbon double bond;Substitution degree of R2 is 10%~80%;Substitution degree of R1 is 5%~20%.The present application introduces carbon-carbon double bond group and hydrophilic group at the primary amine position of protein, imparts the crosslinking ability of protein and enhances the hydrophilic performance of protein, by limiting the substitution degree of R1 and R2, the rate of protein sponge gelation after water absorption is regulated, and the controllable adjustment of sponge skeleton swelling speed and sponge channel contraction is realized.Compared with existing sponge, the protein sponge of the present application has good flexibility, more excellent efficiency of enriching blood clotting components, and low risk of rebleeding.

This utility model discloses a positionable dental implant healing abutment and a matching screwdriver. The positionable dental implant healing abutment includes an abutment body and a rubber column. An installation hole is formed at the center of the upper end face of the abutment body, and a connecting groove is formed below the installation hole, communicating with the installation hole. The rubber column includes a connecting section and a protruding section, with the connecting section installed within the connecting groove. The rubber column is connected to the abutment body via the connecting groove, preventing it from becoming loose. During the first-stage implant surgery, the rubber column can be trimmed according to the gingival height to make it flush with the gingiva, thus preventing impact on the integration of the implant and alveolar bone due to occlusal collision during implant healing. By setting the rubber column on the abutment body, it can be used to position the implant during the second-stage implant surgery, greatly reducing clinical operation time and avoiding incorrect incisions, as well as reducing the chance of bleeding and infection.

The utility model relates to an implantation device for intervening a micro biosensor into subcutaneous tissue, which comprises a fixed seat and a driving unit, and the driving unit is slidably mounted in the fixed seat and can move relative to the fixed seat along a first direction. The fixing base is provided with a first guide part extending in the first direction, and the driving unit comprises a second guide part extending in the first direction and a second limiting part capable of elastically abutting against the inner wall of the fixing base. And in the movement process of the driving unit relative to the fixed seat, the first guide part is matched with the second guide part, so that the relative movement between the fixed seat and the driving unit can be guided. Meanwhile, in the process that the driving unit moves relative to the fixing base, the second limiting part can elastically abut against the inner wall of the fixing base, and therefore the guiding effect on the movement of the driving unit relative to the fixing base is achieved. Through the design, the possibility that the driving unit shakes in the implanting process can be reduced, the movement stability is improved, and the pain feeling is reduced.

The present application relates to the technical field of wound dressing material, and in particular to a preparation method and application of a glycosylated (galactose-tyrosine-Fmoc) chitosan derivative.The glycosylated (galactose-tyrosine-Fmoc) chitosan derivative is synthesized through Fischer reaction, nucleophilic substitution reaction, addition-elimination reaction and the like.The compound can form a hydrogel, and the hydrogel not only has good selective sterilization effect on pseudomonas aeruginosa, but also has broad-spectrum sterilization activity and hemostatic function, and has a broad application prospect in the field of wound dressings.

The application discloses an automatic vagina closing and cutting instrument under a laparoscope and belongs to the technical field of medical instruments. The instrument comprises an operation handle, a sleeve, a clamping assembly, a cutting assembly, a rotating sleeve, a liquid storage sleeve, an adapter assembly, a protective sleeve and a sealing assembly. The sleeve is fixed to the outer side of the output end of the operation handle. The clamping assembly is arranged on the inner side of one end of the sleeve. The cutting assembly is used for cutting the vagina. The rotating sleeve is arranged outside the sleeve. The liquid storage sleeve is arranged on one end of the rotating sleeve and is in sliding connection with the sleeve. The adapter assembly is arranged on the inner side end of the liquid storage sleeve. One end of the protective sleeve is fixedly connected with the end of the liquid storage sleeve, which is far away from the operation handle. The fitting assembly is used for increasing the fitting property of the protective sleeve and the residual end of the vagina. The sealing assembly is arranged in the opening end of the protective sleeve. The movable protective sleeve is arranged outside the sleeve. The protective sleeve is tightly fitted with the residual end of the vagina through the fitting assembly. The risk that tumor cells enter the abdominal cavity through the open vagina is effectively blocked. The probability of abdominal cavity implantation and metastasis in the malignant tumor operation is remarkably reduced.

This application discloses a continuous-fire vascular clamp applicator, including a pressure rod, a main rod, and a clamping body with a continuous-fire cartridge. By pushing the handle with the hand, the first spring is compressed, reducing the distance between the handle and the main rod. This causes the handle to deflect the inclined rod within a movable groove, which in turn causes the pressure head to move downward, allowing the pressure column to insert into the pressure hole at one end of the groove. Specifically, by squeezing the handle, the pressure head drives the pressure column into the pressure hole, pushing the upper pressure head out of the pressure hole so that the upper and lower clamps of the vascular clamp come into contact and engage, thus clamping the vascular clamp onto the blood vessel. Releasing the handle pushes the first spring away from the main rod, causing the pressure head and the pressure column to be pulled out of the pressure hole. The pusher then pushes the upper clamp of the next vascular clamp in the groove into the pressure hole. This allows the vascular clamp to clamp the blood vessel without the need to reinstall the vascular clamp, enabling continuous use of vascular clamps to clamp and stop bleeding, reducing the time spent on vascular clamping operations, thereby reducing bleeding and surgical risks.

The application discloses application of metformin in preparation of a medicine for treating interstitial cystitis, and finds that metformin can reduce pain sensitivity of an interstitial cystitis (IC) rat, reduce edema degree of a bladder of the IC rat, restore bladder capacity of the IC rat, repair the bladder mucosa of the IC rat and reduce submucosal hemorrhage, reduce mast cell infiltration, and has a significant curative effect on interstitial cystitis, and can provide a new medicine for treating interstitial cystitis.

The utility model relates to the field of medical instruments, in particular to a disposable crissum postoperative nursing pad. The utility model provides a disposable crissum postoperative nursing pad which can inject water to perform hot compress or cold compress on a patient when the disposable crissum postoperative nursing pad is pasted for use, relieve inflammation, swelling and pain, reduce bleeding, improve use comfort and promote wound healing. A disposable crissum postoperative nursing pad comprises a breathable pad, a first sticking sheet and the like, and the upper side of the rear portion of the breathable pad is connected with the first sticking sheet. Cold water or hot water is poured into the water injection pipe and then enters the water bag for water injection, then the anti-overflow screw cover is rotated to be movably installed for sealing, then the device is pasted on trousers for use, hot compress or cold compress is carried out through hot water or cold water, and therefore when the device is pasted for use, water injection can be carried out on a patient for hot compress or cold compress. Inflammation, swelling and pain are relieved, bleeding is reduced, the use comfort is improved, and wound healing is promoted.

A spine internal fixing device with a fusion function comprises a pedicle screw, the pedicle screw comprises a screw body, a screw tail is arranged at the upper end of the screw body, a nut is connected to the screw tail through internal threads, the screw body and the screw tail are of a honeycomb structure simulating cancellous bone, and solid external threads are arranged on the outer surface of the screw body. According to the spinal internal fixation device with the fusion function, a full-assembly simulation cancellous bone honeycomb structure of a pedicle screw rod nut and a matched connecting piece is prepared by adopting a 3D printing technology, and meanwhile, solid structures of key stress parts such as an external thread tip threaded connection surface are reserved so as to guarantee early mechanical fixation strength; after the components are assembled, a continuous bone ingrowth channel is formed, so that the transformation of internal fixation of the spine from temporary mechanical support to permanent osseous fusion is realized, and various intervertebral, intervertebral, posterior lateral and transverse process bone grafting fusion steps in a traditional spine fusion operation can be omitted.

This specification provides a system and apparatus for constructing an animal model of spinal glioma, relating to the field of intelligent medicine. The system, executed by a robot, includes: a puncture point localization module configured to locate the highest point of the spine in its natural state as the puncture point; a spine exposure module configured to locate points at a first distance above and below the highest point of the spine along the spinal direction, forming a line segment; controlling the cutting of the dorsal skin of the animal sample along the line segment to expose the spine; a puncture needle insertion module configured to control the puncture needle to penetrate the puncture point perpendicular to the vertebral interface at a first speed until the puncture needle penetrates the spinal cord tissue; controlling the puncture needle to retract a third distance and pause for a first time; a cell suspension injection module; and a puncture needle withdrawal module configured to control the withdrawal of the puncture needle, thus obtaining the animal model. This application provides insights for clinical research on the molecular characteristics of spinal glioma and the identification of potential therapeutic targets.

This invention discloses a tearable catheter sheath with hemostatic function, relating to the field of medical device technology, which solves the problem of inconvenience for financial personnel in binding vouchers. It includes: a sheath assembly comprising two symmetrical tearable tube seats, with a tearable sheath tube commonly disposed on the inner edge surface of the bottom openings of the two tearable tube seats; tear lines are provided on the tearable sheath tube along the symmetrical axis of the two tearable tube seats to ensure that the tearable sheath tube can be torn simultaneously when the two tearable tube seats are torn outwards; and a limiting component disposed between the tearable tube seats and the tearable sheath tube; the limiting component includes a limiting ring disposed on the outer edge surface of the tearable sheath tube, which ensures that the opening position of the tearable sheath tube when peeled is above the puncture incision, preventing the tearable sheath tube from pulling the puncture incision to the sides and causing incision expansion when it is peeled off and withdrawn from the blood vessel.

The utility model relates to the technical field of oral cavity restoration, and discloses a tooth filling forming clamp convenient to use, which comprises two clamping arms and two beak edges, the two beak edges are respectively arranged on the sides, close to each other, of the two clamping arms, the vertical height difference between the two beak edges is 3mm, and the width of the two beak edges is 10mm. And the beak edge is set to have different widths according to different clamped tooth positions. According to the utility model, through the unique design of the beak edges with one high part and one low part and the height difference of 3mm, hyperplasia gingiva can be pushed away in a non-invasive manner, so that wounds caused by traditional gingival resection are avoided, and the pain of a patient and the risk of postoperative complications are reduced; the diversified beak edge widths are adaptive to different tooth positions, so that the clear operation view is ensured, and the repairing precision is improved. Meanwhile, holes are formed in the clamping arms, so that the weight is reduced, the clamping wings are convenient to control, the connecting blocks and the clamping bows provide stable elastic support, the flexibility and stability of surgical operation are guaranteed, and the clinical treatment efficiency and the repair success rate are remarkably improved.

The embodiment of the utility model discloses a sleeve-free floating needle needling instrument. According to one specific implementation mode, the sleeve-free floating needle instrument comprises a needle handle and a needle body, and a needle point is arranged at the front end of the needle body; the needle tip has a puncture structure; a step structure is arranged between the needle body and the needle handle; the step structure comprises a first step and a second step; the cross sectional area of the first step is gradually reduced from the needle handle to the needle body; the first step is fixedly connected with the second step; the second step is arranged on one side of the first step in an offset mode. The needle handle is a square cylinder, and an anti-skid structure is arranged on one side of the square cylinder; the side, provided with the anti-skid structure, of the square column body is opposite to the second step in a bias mode. The first step is connected with the needle handle; the second step is provided with a needle hole; the needle hole is funnel-shaped; the rear end of the needle body is embedded into the needle hole. According to the implementation mode, the possibility of needle breakage can be reduced through the funnel-shaped needle hole during sweeping, only the needle body is used during needle insertion, a soft sleeve is not used, and the possibility of pricking and bleeding of a patient can be greatly reduced.

The invention provides a reamer and an assembling method thereof, and relates to the technical field of medical instruments. The reamer comprises a drill tail, a double-face convex bead connecting piece, a double-face concave bead connecting piece and a drill bit. The two ends of the double-face convex bead and the double-face concave bead connecting piece are connected with the drill tail and the drill bit respectively. By means of the flexible shaft structure, sufficient rigidity and torque transmission efficiency are guaranteed, meanwhile, good space adaptability and path adjustability are achieved, continuous and smooth steering can be achieved in a medullary cavity along a complex anatomical path, multi-angle bone channel reaming through a single incision is supported, the number of puncture times and instrument replacement are reduced, and operation is easy and convenient. The risks of tissue damage, bleeding and infection are reduced. Meanwhile, the multi-channel positioning precision and collaboration are improved, the screw layout is optimized, the internal fixation stability is enhanced, the perspective frequency and X-ray exposure in the operation are reduced, and the operation safety and efficiency are improved. The invention is suitable for percutaneous minimally invasive fixation of complex pelvic fracture, and breaks through the application limitation of traditional rigid instruments.

The utility model belongs to the technical field of medical instruments, and particularly relates to a disposable peaked-cap-shaped endoscope transparent cap which comprises an endoscope transparent cap body, a groove is formed in the inner wall of the top end of the endoscope transparent cap body, a through hole is formed in one side of the groove, a connecting strip is arranged above the groove, and a limiting bolt is arranged at one end of the connecting strip. An inner groove is formed in the inner wall of the front end of the endoscope transparent cap body, a sliding groove is formed in one side of the inner groove, and a pressing piece is arranged on the inner side of the inner groove. According to the endoscope transparent cap, the limiting bolt, the sliding groove, the pressing piece, the sliding block and the limiting hole are arranged, when the endoscope transparent cap body is used, the position of the pressing piece can be adjusted through matching of the sliding groove and the sliding block, so that the pressing piece is pulled out, the operation view can be fully exposed through the pressing piece, and the conditions of bleeding and perforation in an operation can be reduced; by means of cooperation of a limiting bolt and a limiting hole, the using stability of the pressing piece can be improved, the pressing piece is prevented from shaking in the using process, and the using effect of the endoscope transparent cap body is improved in this way.

The utility model discloses a vascular puncture dilator for ECMO relates to dilator technical field. Specifically including dilatation spare and adjusting spare, dilatation spare is a hollow cylinder, and it has open line one in length direction, adjusting spare sets up in the inner wall of dilatation spare, and it is equipped with the open line two of placing guide wire in length direction, wherein, adjusting spare can rotate relative to the axis of dilatation spare, and make open line two and open line one can be selected coincident, to with guide wire from open line two and open line one separate. Dilatation spare and adjusting spare are provided with open line one and open line two respectively, and guide wire can move from open line one to open line two, when open line two and open line one coincide, dilatation spare removes the puncture part, can directly from guide wire on the change, avoided the dilator and needed the guide wire to exit, reduced the time of dilator from guide wire and took out, reduced the amount of bleeding of patient blood vessel after dilatation.

The application discloses a postoperative rehabilitation abdominal bandage intelligent pressure regulating method and system, relates to the technical field of abdominal bandage intelligent pressure regulating, and comprises the following steps: wearing an intelligent abdominal bandage on a patient after abdominal surgery is completed and selecting a corresponding postoperative rehabilitation mode, loading target pressure parameters and completing initialization setting according to the postoperative rehabilitation mode; continuously collecting the pressure state of each region of the abdomen through a pressure collecting unit in the abdominal bandage, forming real-time pressure data, comparing the pressure data with a target pressure range, judging the current pressure state and generating a pressure regulating instruction; and adjusting the overall tightness state through the pressure regulating structure of the abdominal bandage according to the pressure regulating instruction, so that the abdominal pressure gradually reaches the set interval. Through intelligent closed-loop pressure regulation based on real-time pressure feedback, the application realizes dynamic and accurate control of the overall and local pressure of the abdominal bandage, and effectively improves the safety, stability and rehabilitation effect of postoperative abdominal support.

This invention discloses an external positioning system for intramedullary fixation of intertrochanteric fractures of the femur, comprising: a main connecting rod for axial fixation along the femoral axis to the lateral thigh; a distal clamp at the distal end of the main connecting rod for clamping and fixing to the distal femoral shaft; a trochanteric apex positioning component connected to the proximal end of the main connecting rod and having a positioning portion for engaging with the apex of the greater trochanter; a secondary connecting rod parallel to and slidably connected to the main connecting rod and lockable at a selected position on the main connecting rod; and a needle guide connected to the proximal end of the secondary connecting rod and having a guide channel for guiding the guide needle into the femoral medullary cavity. This invention effectively reduces the number of intraoperative fluoroscopy sessions, shortens surgical time, reduces patient bleeding and infection risk, reduces radiation exposure for both doctors and patients, and improves surgical precision and safety. Furthermore, each component can be used individually or in combination to adapt to different fracture types and surgical needs.

The utility model relates to the field of nail trimming, in particular to a toe nail trimming fixer, which comprises a bottom plate, a fixing rod, five groups of toe fixing components and an instep fixing bandage, the fixing rod is fixed on the left side of the bottom plate, sleeve rods are arranged on the right side surface of the bottom plate at intervals, and the sleeve rods are fixed on the bottom plate. The toe fixing assembly comprises a lantern ring, a fixing screw, a telescopic belt and a pressing block, the lantern ring is arranged on the fixing rod in a sleeving mode and fixed through the fixing screw, the telescopic belt is fixed to the left side of the lantern ring, through holes are distributed in the telescopic belt at intervals, a sleeve hole is formed in the right side of the telescopic belt, and the top of the pressing block is inserted into the through hole. A pressing groove is formed in the lower end of the pressing block, the sleeve rod is sleeved with the sleeve hole, the instep fixing bandage is located on the lower middle portion of the bottom plate, the left end of the instep fixing bandage is fixedly connected with the bottom plate, the right end of the instep fixing bandage is connected to the right side of the bottom plate through a hook-and-loop fastener, toes are effectively fixed, and the convenience of medical staff for cutting the toes of a patient is improved.

The utility model relates to percutaneous nephroscope sheath technical field, concretely is a kind of composite percutaneous nephroscope sheath with hemostatic function, including pipe body, the head end of pipe body is equipped with metal head, the tail end of pipe body is equipped with protective cover, the inside of protective cover is equipped with the inside of pipe body is provided with wire, one end of wire is connected with metal head, the other end of wire is connected with threaded rod, the outer end of threaded rod is equipped with electrode piece connector, electrode piece connector is connected with external hemostatic electrode. In the composite percutaneous nephroscope sheath with hemostatic function, wire is directly contacted with bleeding point through metal head, combined with external hemostatic electrode, can quickly coagulation hemostasis to intraoperative bleeding site, without replacing instrument, reduce intraoperative bleeding volume and hemostasis operation time, reduce the surgical risk caused by bleeding.

The utility model relates to the technical field of medical instruments, and discloses a hockey rod-like steel plate which is used for fixing tibia and comprises an extension section, a turning section and a bending section, the turning section is of a curved structure with a corner, one end of the turning section is connected with the extension section, the extension section extends in the vertical direction, a fixing part is arranged on the extension section, and the bending section is of a curved structure with a corner. The steel plate is fixed on the tibia; the other end of the turning section is connected with the bending section, the bending section extends in a surrounding mode along the peripheral side of the tibia in the horizontal direction, the bending section is of an arc-shaped structure with a curved surface, and an adjusting part is arranged on the bending section so that the bending section can be attached to the tibia. The steel plate is attached to the anatomical structure of the inner side of the proximal tibia, and through the hockey rod-like design and the shaping characteristic, the dependence of an operation on an accurate body position is reduced, and the operation difficulty is reduced; the steel plate penetrates through the goose foot tendon to be placed, so that damage to the medial collateral ligament and the goose foot tendon is avoided, and the risk that the knee joint is unstable after operation is reduced.

The application belongs to the technical field of garden construction, and particularly relates to a paver for garden road construction, which comprises a main body, a paving assembly arranged on the main body, a paving mechanism and a driving mechanism, the paving mechanism is arranged on the main body, the driving mechanism is arranged on the main body, the paving mechanism comprises a shaping assembly, a carbonization maintenance assembly and a freeze-thaw resistance and weight optimization assembly, the shaping assembly is arranged on the paving mechanism, the carbonization maintenance assembly is arranged on the paving mechanism, and the freeze-thaw resistance and weight optimization assembly is arranged on the paving mechanism; through the arrangement of the carbonization maintenance assembly, the freeze-thaw resistance and weight optimization assembly injects high-purity compressed nitrogen into the concrete slurry to form micro-bubbles, the bubbles can absorb the expansion stress in the freeze-thaw cycle, greatly improve the frost resistance of the concrete, improve the workability and fluidity of the concrete, reduce bleeding and segregation, cut off the internal capillary, and improve the impermeability.

The utility model relates to a self-adhesive sponge for nasal septum perforation repair, which is used for fixing cartilage at a nasal septum perforation position and comprises a sponge support body, the sponge support body comprises a sponge support layer, an adhesive layer and an anti-sticking layer which are sequentially attached, the adhesive layer is arranged on one side of the sponge support layer attached to a wound surface, and the anti-sticking layer is arranged on the other side of the sponge support layer attached to the wound surface. And the surface of the adhesion layer is covered with an anti-adhesion layer. Compared with the prior art, the self-adhesive sponge disclosed by the utility model has good mechanical property, good adhesive capacity between the sponge bracket main body and a wound surface, can be firmly attached to a cartilage of a perforated nasal septum and promote mucous membrane healing, and also has good biological safety, degradability and intraoperative operability; the nasal septum perforation repair effect is improved, the nasal septum perforation rate is reduced, and the life quality of a patient is improved.

The invention discloses an atlantoaxial lateral mass joint dilator device which comprises a transverse toothed plate, a transverse moving sleeve, a vertical rod, two movable arms and two distraction rods, the transverse moving sleeve movably sleeves the transverse toothed plate, a vertical through hole is formed in one end of the transverse toothed plate, the vertical rod movably penetrates through the vertical through hole, and the two movable arms are arranged on the two distraction rods. The two movable arms are movably connected with the lower end of the vertical rod and the lower end of the transverse moving sleeve respectively, and each movable arm is provided with an opening rod positioning hole and an observation hole. The distance between the two distraction rods in the horizontal direction and the distance between the distraction cones can be adjusted by adjusting the transverse moving sleeve along the transverse toothed plate, the two movable arms can rotate up and down and horizontally, so that the inclination angle of the distraction rods is adjusted, the distraction rods can move in the axial direction, and therefore the use length is adjusted. The atlantoaxial lateral mass joint dilator is high in flexibility, limited operation space can be used, a visual channel is reserved, and conditions are established for operation under an endoscope.

The utility model provides an auxiliary device for placing a steel plate in the middle, which comprises double-joint seaming pliers, jaws of the two double-joint seaming pliers respectively clamp bone cortex, and the tail end of a handle of any double-joint seaming pliers is provided with a zigzag locker. Any pair of double-joint nipping pliers is provided with middle lock catches which are arranged at intervals in the length direction of the double-joint nipping pliers, sleeves are arranged on the two middle lock catches respectively, circular rings are arranged at the ends, away from the double-joint nipping pliers, of the two sleeves, and a third sleeve is arranged in the two circular rings jointly; the third sleeves are located on the center line of the double-joint seaming pliers, the other ends of the two third sleeves are both installed on the center line of the long axis of the steel plate, and the steel plate is placed in the middle of a small incision of a patient. According to the utility model, the jaws of the two double-joint seaming forceps are respectively used for clamping the bone cortex, so that the steel plate can be accurately placed in the middle through a small incision, the trauma is smaller, the bleeding is less, the operation time is shortened, the operation success rate is improved, and the perspective frequency is greatly reduced.

This invention belongs to the field of medical device technology, specifically relating to a pediatric foreign body removal device. The device includes an endoscope handle with a gastric tube fixed to one end. The gastric tube has a biopsy channel inside. It also includes a clamping module movably mounted inside the biopsy channel. The clamping module includes a sheath, a first clamp, and a second clamp. The sheath is slidably connected inside the biopsy channel, and both the first and second clamps are rotatably connected to one end inside the sheath. The first and second clamps constitute a clamping structure. This invention, by setting the clamping module and bending module to be compatible and switchable between linked and independent states, first clamps bends bendable card-like foreign bodies on both sides using a first and second bending rod to reduce their projected width. This allows the foreign body to fit into the narrow digestive tract of children, reducing the risk of complications such as mucosal damage and bleeding.