35 results about "Intracranial surgery" patented technology

The utility model discloses a head decompression bolster used after a craniocerebral operation, and relates to the field of decompression bolsters. The craniocerebral operation pillow comprises a pillow body, the pillow body is composed of a pillow inner, an adjusting inner frame and an air bag, the pillow inner wraps the outer surface of the adjusting inner frame and the outer surface of the air bag, the adjusting inner frame comprises an adjusting seat, and a sliding groove is formed in the inner side of the adjusting seat. Medical staff can adjust the adjusting inner frame according to the specific condition of an operation and the wound of a patient, so that the position of the pressure reduction area is changed, when the wound of the craniocerebral operation is close to the neck, the two supporting rods can be separated to be suitable for the first pressure reduction area, and when the wound of the craniocerebral operation is close to the head top, the two supporting rods can be separated to be suitable for the second pressure reduction area. The supporting rod at the rear end can be adjusted to the front end to be suitable for the second pressure reduction area, and due to the fact that the supporting rod can support the non-traumatic wound position of the head, the pressure of the traumatic wound is very small, and discomfort of a patient cannot be caused.

Systems, methods and devices are provided for performing diagnostic or therapeutic transcranial procedures using a patient-specific transcranial headset. The patient-specific headset may include a patient-specific frame that is fabricated, according to volumetric image data, to conform to an anatomical curvature of a portion of a patient's head. The patient-specific frame is configured to support a plurality of transducers in pre-selected positions and orientations, which may be spatially registered to the volumetric image data. This spatial registration may be employed to control at least a portion of the transducers to focus energy at a preselected tissue region.

The invention discloses a partial pressure type extensible medical elastic cap, and relates to the technical field of neurosurgery postoperative nursing instruments, the partial pressure type extensible medical elastic cap comprises a partition debugging assembly, the outer surface of the partition debugging assembly is provided with a connecting assembly, and the partition debugging assembly comprises an elastic cap body. According to the partial pressure type extensible medical elastic cap, in order to improve the practicability of the elastic cap for head pressure bandaging after the craniocerebral operation, the main body width of the elastic cap body is increased to 10 mm, the gradient pressure weaving technology is adopted, the central area is formed by processing a high-elasticity weaving layer, the low-pressure area is formed by processing a low-elasticity weaving layer, the cutting feeling can be reduced, and the elastic cap is more practical. The elastic cap can be prevented from being in contact with auricles, opening and closing of the elastic cap can be achieved through the combination of the two corresponding neodymium magnets, the purpose of locally pressurizing the head of a patient can be achieved by pressurizing the air bag, and the elastic cap is convenient to use. The problem that a traditional medical elastic cap in the prior art is simple in structure and low in practicability is solved.

The application discloses a deep intracranial tissue suturing and ligature instrument, which can realize suturing and ligature of deep human tissues (especially intracranial surgery). The instrument can realize suturing and ligature of deep tissues in minimally invasive treatment in clinical surgery, and can solve the problems of small operation space, difficult suturing and easy damage to surrounding tissues in traditional surgery. The operation includes two parts of suturing and steering, and the suturing operation is completed by two interchangeable needle holding levers. A universal joint device held by the rear lever can be adjusted in direction according to different requirements, and is used for coping with various complex situations.

The invention discloses a transparent tubular retractor for deep craniocerebral surgery, and relates to the technical field of surgical instruments, the transparent tubular retractor comprises an internal sheath tube and an external sheath tube which are used for retracting a surgery cavity during deep craniocerebral surgery, the external sheath tube and the internal sheath tube are provided with fixing and adjusting assemblies, the external sheath tube is provided with a water delivery pipe, and the water delivery pipe is provided with a water outlet. A pressurized cleaning pipeline assembly is arranged in the water conveying pipe; a fixing rod capable of being rotationally adjusted is arranged on an external sheath tube, the fixing rod is connected with an external snakelike retractor device through a fixing frame, the snakelike retractor is adjusted to drive the external sheath tube and an internal sheath tube to retract and fix a craniocerebral operation part of a patient, or the external sheath tube is adjusted, so that the craniocerebral operation part of the patient is fixed, and the craniocerebral operation part is fixed. Water in the water delivery pipe is pressurized through the pressurized cleaning pipeline assembly and then sprayed out so as to clean an operation cavity or an internal sheathing canal; the device has the advantages of being convenient to use, comprehensive in function, high in flexibility and simple in structure.

1. The name of the product of this design: intracranial surgery retractor. 2. Purpose of the product of this design: A disposable tissue fixation device used to provide a working channel and achieve visualization during neurosurgery. 3. The design key point of this appearance design product lies in the shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

The utility model discloses a tissue expansion system for craniocerebral surgery, which relates to the technical field of medical instruments and comprises an outer tube, an inner tube, a clamping component and a fastening component, and the tail end of the inner tube extends out of the tail end of the outer tube; a clamping handle is arranged at the top end of the outer pipe, and a clamping hole is formed in the clamping handle; a bearing part is arranged in the inner pipe, and a first through hole is formed in the bearing part; the clamping assembly is arranged on the bearing part and comprises a pressing piece and a first elastic piece, a second through hole is formed in the pressing piece, and a first pressing part is arranged on the outer side of the pressing piece; the fastening assembly comprises a main body and a clamping piece, the main body is arranged above the clamping assembly, a third through hole is formed in the main body, and the clamping piece is clamped with the clamping hole; the first through holes and the second through holes are arranged in a staggered mode, and the first through holes and the third through holes coincide. According to the tissue expansion system, effective expansion of a soft tissue incision is achieved, an endoscope pipeline can freely stretch out and draw back in the inner pipe and can be rapidly clamped, damage to the soft tissue incision is smaller, and disassembly, assembly and cleaning are convenient.

An intracranial procedure includes engaging a fiducial device having fiducial markers with a maxillofacial anatomy of a patient, the fiducial device arranged to communicate with a tracking arm arranged to communicate with a robotic arm having a procedure performing device engaged with a distal end of the robotic arm. A virtual surgical plan is prepared in registration with and relative to the fiducial marker for forming an aperture through the skull and into the intracranial region, and for accessing an associated intracranial anatomical structure through the aperture. Movement of the surgical performing device relative to the fiducial marker is physically adjusted via the robotic arm according to the virtual surgical plan and symmetrically with physical manipulation of the surgical performing device during formation of the aperture and during entry into the associated intracranial anatomy. If the physical manipulation of the surgical performing device deviates from the virtual surgical plan, haptic feedback is provided via the surgical performing device.

The utility model discloses a drilling guide device for a craniocerebral operation, and belongs to the technical field of medical auxiliary instruments. The device comprises a main body shell, a lifting adjusting mechanism is arranged in the main body shell, sliding openings are formed in the side walls of the two sides of the main body shell correspondingly, the two ends of the lifting adjusting mechanism penetrate through the two sliding openings correspondingly and are fixedly connected with a first clamping mechanism, and an upper guide hole plate is fixedly clamped to the first clamping mechanism; the lower portions of the two sides of the main body shell are fixedly connected with two symmetrically-arranged fixing frames, the front ends of the two fixing frames are fixedly connected with a second clamping mechanism, and a lower guide hole plate is fixedly arranged on the second clamping mechanism. According to the craniocerebral operation drilling depth adjusting device, by arranging the lifting adjusting mechanism and the locking mechanism, the distance between the upper guide hole plate and the lower guide hole plate can be accurately positioned and adjusted, the accuracy of craniocerebral operation drilling depth adjusting is guaranteed, and by arranging the first clamping mechanism and the second clamping mechanism, the upper guide hole plate and the lower guide hole plate can be conveniently replaced.

The utility model provides a head support for a craniocerebral operation, and belongs to the technical field of medical auxiliary instruments. The head support for the craniocerebral operation comprises a supporting plate, brackets and protection pads, the two brackets are arranged on the supporting plate in the mode that the distance between the two brackets is adjustable, the two protection pads made of silica gel materials are correspondingly arranged on the brackets in a sleeved mode and matched with each other so that the head of a patient can be supported in the craniocerebral operation, and disposable elastic protection sleeves are arranged on the protection pads in a sleeved mode. The shape of the elastic protection sleeve is matched with that of the protection pad, the elastic protection sleeve is provided with an inner layer and an outer layer, the inner layer of the elastic protection sleeve is made of a waterproof material, and the outer layer of the elastic protection sleeve is made of a water absorption material. According to the head support for the craniocerebral operation, the situations that the silica gel protection pad on the head support is polluted by disinfectant and / or blood in the operation process and aging is accelerated can be effectively avoided, and the infection risk of a patient can be effectively reduced; and the operation of paving plastic cloth on the ground below the head support to collect dripping blood and / or disinfectant in the prior art can be omitted.

The invention belongs to the technical field of animal intracranial surgery positioning tools, and particularly relates to an arc-shaped operation instrument for animal deep brain surgery, which comprises an arc arm assembly and a calibration table, and is compatible with a rectangular coordinate system and a polar coordinate system, and in actual use, through simple coordinate conversion, an animal standard brain map based on the rectangular coordinate system can be converted into an animal standard brain map based on the polar coordinate system. The method is applied to a polar coordinate system of more complex space positioning; the device can be directly installed on a mature stereotaxic instrument in the market, and the use cost is relatively low. Through mutual cooperation of a large number of adjustable joints, the equipment can easily carry out zero calibration operation on a commercial standard stereotaxic instrument, so that a rectangular coordinate zero point in the standard stereotaxic instrument and a coordinate zero point in a polar coordinate system of the equipment are registered together, and conversion between a two-dimensional coordinate and a three-dimensional coordinate is realized; the method has the advantages of more convenient and accurate positioning of the complex brain region, high experiment efficiency, strong flexibility, diversified use scenes and the like.

The invention relates to the technical field of medical instruments, and provides a pressure-adjustable craniocerebral protective cap in order to solve the technical problems that bandaging after an existing craniocerebral operation cannot be adjusted in time according to craniocerebral pressure, and the pressure cannot be measured and accurately controlled, the pressure-adjustable craniocerebral protective cap comprises a cap body, an opening is formed in the cap body, the opening is of a folded edge design, and a plurality of through holes are formed in the surface of the cap body; an elastic bridle is arranged on the lower edge of the cap body and is used for adjusting the tightness degree of the cap body; the air bag penetrates through the through hole in the surface of the cap body, and the inner side of the air bag is communicated with a human craniocerebral defect area; the pressure adjusting structure is arranged on the outer side of the air bag, communicates with the interior of the air bag and is used for conducting adaptive adjustment when the pressure of the air bag changes. Self-adaptive adjustment can be carried out according to intracranial pressure changes, meanwhile, the device can be tightly attached to a craniocerebral defect area, and intracranial pressure fluctuation caused by factors such as external pressure changes or slight collision of the head is avoided.

The utility model provides a special short intracavitary probe suitable for craniocerebral operations, relates to the technical field of intracavitary probes, and solves the problems that the existing probe cannot be contacted with brain tissues through a flap opening, so that imaging is incomplete and even cannot be realized. The special short intracavitary probe comprises a handheld part, and a connecting port is formed in the surface of the handheld part; the surface of the connecting port is provided with a thread and a plurality of open grooves, the open grooves are circumferentially distributed on the surface of the connecting port, an extension rod is installed in the connecting port, a probe is installed in the extension rod, the surface of the extension rod is sleeved with a rotating piece, the rotating piece is installed on the surface of the connecting port, and the probe is installed in the rotating piece. A thread groove matched with the thread is formed in the inner wall of the rotating piece, and the inner wall of the rotating piece is inclined. The device can quickly adjust the length of the extension rod, so that the probe is convenient to contact with brain tissue for imaging.

The utility model relates to the related technical field of detection instruments, in particular to an intracranial operation bleeding position detection device, an intracranial operation bleeding position detection device and an intracranial operation bleeding position detection device, which comprise a display, a liquid pump and a light source machine, the detection device further comprises a detector; the detector comprises a light source camera and a spraying assembly; the light source camera is connected with the light source machine through a connecting line; the light source camera is also connected with the display; the spraying assembly comprises a spraying head, the spraying head is located on the periphery of the light source camera, and a water outlet of the spraying head is of a fan-shaped structure; by arranging the sprayer to spray fan-shaped liquid flow in front of shooting of the light source camera, an area with a clear view can be formed in front of the light source camera, so that the light source camera can explore blood vessels in blood, and a hemorrhagic spot is accurately found. The problem that the hemorrhagic spot of the blood vessel is difficult to find due to mixing of the hemorrhagic spot of the blood vessel and surrounding blood is solved.

The utility model relates to a portable scalp positioner for craniocerebral operation, the front ruler, the back ruler, the front side ruler, the back side ruler, the vertical ruler and the middle line flexible ruler are used as the measuring scale, the front and back side ruler joint, the front side ruler joint, the front side ruler joint handle, the back side ruler joint, the back side ruler joint handle, the vertical side ruler joint, the middle front ruler joint and the middle back ruler joint are used as the movable joint and handle to realize each measuring scale sliding or rotating, can carry out structural adjustment according to the different size of craniocerebral and realize portable storage function. Through the front ruler, the back ruler, the front side ruler and the back side ruler, the eyebrow arch and the occipital outer protuberance plane of the skull are limited, at the same time, the vertical ruler is perpendicular to the plane to obtain 3 -dimensional coordinates and the middle line flexible ruler obtains the arc coordinates of the brain, can improve the measurement accuracy in multidimension, in addition, each joint and handle have high flexibility, convenient operation, and can realize portable storage through rotation.

The invention provides a retractor for a transnasal craniocerebral operation, and belongs to the technical field of medical machinery. Comprising a pair of giraffe pliers, an inner sleeve is installed on the outer wall of the giraffe pliers, and a retracting sleeve is fixedly connected to the outer wall, away from a first annular disc, of a first connecting piece; the auxiliary retraction assembly is used for being matched with the giraffe clamp in the operation process of a patient, and the auxiliary retraction assembly is connected with the retraction sleeve. By arranging the auxiliary retracting assembly, the smoothness of placing the giraffe forceps by medical staff can be improved, it is ensured that the giraffe forceps are accurately conveyed to the designated position in the nasal cavity, so that the operation efficiency is improved, in the giraffe forceps conveying process, the giraffe forceps cannot make contact with the inner wall of the nasal cavity of a patient, and the operation safety is improved. The inner wall mucous membrane of the nasal cavity can be prevented from being torn or scratched by the giraffe forceps, hyperemia and swelling of the mucous membrane are effectively prevented, the difficulty of narrowing of a nasal cavity channel and feeding of instruments such as the giraffe forceps is reduced, and the effectiveness of endoscope observation is guaranteed.

1. The name of the product of this design: Cranial surgery fixation frame. 2. Purpose of the product with this appearance design: The product with this appearance design is used to fix the patient's head during neurosurgery such as neurointervention or peripheral vascular intervention. 3. The design key point of this appearance design product lies in the shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

The utility model belongs to the technical field of medical auxiliary instruments, and particularly relates to a hair restraining tool which comprises a restraining tool body, and the restraining tool body comprises a base body part and a deformation part which is detachably arranged on the base body part and used for restraining hair. When the hair restraining tool is used, the deformation part is stretched to be matched with the shape of hair shaved on the periphery of a surgical incision, then the deformation part is fixed to the base body part, and then the restraining tool body is used for combing the hair needing to be fixed outwards from the surgical incision, so that the hair is fixed to the hair restraining unit on the deformation part. The scalpel is convenient to operate, can fix hair around incisions in different shapes in a craniocerebral operation, effectively prevents the hair from falling into the incisions, and is easy to take down after being used.

The utility model discloses a device for fixing and restoring skull bone flaps, and belongs to the technical field of bone fixing and repairing. The device comprises a skull fixator, the skull fixator comprises a skull side fixing end and a bone flap side fixing end which are fixedly connected, and the skull side fixing end is fixed to a skull through a fixing titanium nail; an adjusting boss with an internal thread is arranged on the bone flap side fixing end, the first titanium nail sequentially penetrates through the defective bone flap and the lifting structure and then is connected with the internal thread of the adjusting boss in a matched mode, and the defective bone flap and the bone flap side fixing end are fixed together. A new choice is provided for pure complete fixation and bone flap removal after the craniocerebral operation, the problem that the intracranial pressure is increased after pure skull fixation can be effectively solved, the risk caused by brain tissue swelling after the operation is reduced, and meanwhile the stability after bone flap reduction can be guaranteed.

1. The name of the design product: craniocerebral operation head frame. 2. The use of the design product: medical equipment for fixing the head of a patient. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view.

The invention provides a brain tissue retraction and expansion device in a variable-depth craniocerebral operation based on a release technology, which comprises a rotating plate, a fixed base plate, a mounting nut, an expansion plate and a fixed branched chain, the expansion plate is mounted on the mounting nut, the expansion plate forms a circular channel, an external thread of the mounting nut is matched with an internal thread of the fixed base plate, and the fixed branched chain is fixed on the rotating plate. The rotating plate is installed on the groove of the fixed base plate through a buckle, and a protruding edge is arranged in the rotating plate and matched with the groove of the fixed base plate; by rotating the rotating plates with different angles or radians, the elastic expansion movement of the expansion plates with different depths inserted into the brain is dragged and driven, so that the brain tissue in the brain is retracted, the healthy brain tissue is effectively prevented from being injured by an operation during a craniocerebral operation, the intentional tissue in the brain is effectively controlled, and the brain tissue in the brain is effectively prevented from being damaged by the operation. Therefore, the precise craniocerebral operation is realized, the efficiency of the craniocerebral operation is greatly improved, the operation injury to a patient is effectively reduced, and meanwhile, the workload of medical workers during the operation is reduced.

The invention provides a unilateral retraction device which is used for a craniocerebral operation through an eyebrow arch approach so as to expand an incision at the eyebrow arch to expose an operation section. The first side of the incision is an eyelid side, and the second side is a frontal side; the device comprises a main body section, a left section and a right section, the main body section extends transversely and is used for abutting against the eyelid side of the incision; the left section is connected to the left end of the main body section through a first transition section, and the right section is connected to the right end of the main body section through a second transition section; the first transition section and the second transition section respectively form an arc-shaped bent shape; the left section extends towards the right front, and the right section extends towards the left front; the left section and the right section are used for abutting against the frontal side of the incision; the main body section, the first transition section, the left section, the second transition section and the right section are integrally formed; the first transition section and the second transition section are made of elastic materials.

The present invention discloses a post-cranial surgery drilling repair device, which relates to the field of skull repair. The device comprises a fixing member and a first sliding sleeve, wherein the first sliding sleeve is symmetrically fixed to the fixing member, the first sliding sleeve is slidably connected to a sliding connector, a protective cover is fixed between the sliding connectors, the protective cover is fixed to a connecting rod, the connecting rod is fixed to a first sliding rod, and a first spring is wound between the connecting rod and the first sliding sleeve. The present invention uses the first sliding rod and the first spring to buffer the impact force exerted on the protective cover, thereby providing space for the protective cover to move and preventing the protective cover from directly squeezing the repair site. The second spring and the guide rod buffer the fixing member, thereby preventing the protective plate from moving up and down with the fixing member and rubbing against the repair site, thereby achieving the purpose of reducing the friction exerted on the repair site.

The invention discloses a device and a method for fixing and restoring skull bone flaps, and belongs to the technical field of bone fixing and repairing. According to the device, the defective bone flap is fixed on the skull through the skull fixer; the skull fixator comprises a skull side fixing end, a first titanium nail, a lifting structure, an adjusting boss, a bone flap side fixing end and a fixing titanium nail. The skull side fixing end is fixedly connected with the bone flap side fixing end; the skull side fixing end is fixed with the skull through a fixing titanium nail; the adjusting boss is arranged on the bone flap side fixing end, the first titanium nail penetrates through the defective bone flap and the lifting structure and then is in threaded connection with the adjusting boss, and the defective bone flap and the bone flap side fixing end are fixed together. A new choice is provided for pure complete fixation and bone flap removal after the craniocerebral operation, the problem that the intracranial pressure is increased after pure skull fixation can be effectively solved, the risk caused by brain tissue swelling after the operation is reduced, and meanwhile the stability after bone flap reduction can be guaranteed.

The utility model discloses an auxiliary positioning device for craniocerebral injury treatment, which comprises a placing bottom plate, a supporting plate is arranged on the upper side of the placing bottom plate, one side of the supporting plate is rotatably connected with one side of the placing bottom plate, a supporting inclined plate is arranged on the side surface of the placing bottom plate in a sliding manner, and the top of the supporting inclined plate is arranged in an inclined manner. And the top of the supporting inclined plate is attached to the bottom side of the supporting plate, a driving assembly for driving the supporting inclined plate to move is arranged on the side face of the containing bottom plate, and a clamping and positioning assembly is arranged at the top of the supporting plate and comprises two positioning clamping plates symmetrically arranged on the side face of the supporting plate. According to the positioning auxiliary device for craniocerebral injury treatment, the head of a patient can be effectively positioned, medical negligence caused by deflection of the head of the patient in the craniocerebral operation treatment process is avoided, meanwhile, the supine angle of the patient can be adjusted through the positioning auxiliary device, and medical staff can conduct operation treatment on the craniocerebral injury position conveniently.

The invention relates to the technical field of medical instruments, and discloses a craniocerebral operation scalp positioning and scribing device which comprises a fixing frame, a fixing block is connected to one side of the fixing frame, an upper sliding groove is formed in the upper side of the fixing block, a lower sliding groove is formed in the lower side of the fixing block, and a sliding block is slidably connected to the interior of the fixing block; the upper side of the sliding block is fixedly connected with a control block, the control block is in sliding connection with the upper sliding groove, the lower side of the sliding block is provided with an installation pipe, the installation pipe is in sliding connection with the lower sliding groove, a painting brush is in sliding connection in the installation pipe, and a first spring is arranged between the installation pipe and the painting brush. Supporting columns are slidably connected to the two ends of the fixing block correspondingly, and sliding columns are fixedly connected to one sides of the two supporting columns correspondingly. According to the scalp positioning and scribing device for the craniocerebral operation, before a paintbrush passes through the supporting column, the supporting column can automatically slide into the fixing block.

A cranial surgery channel device and a method for using the same, which relates to a surgical channel device and a method for using the same. The present invention solves the problems of positional deviation and accidental injury during cranial puncture by integrating a neuro-navigation system and a visualization scheme. The tube core of the present invention is inserted into the channel and clamped with the channel through a connector, and an observation mirror and a navigation stick are inserted into the tube core along the axial direction of the tube core; the observation mirror is inserted into the observation mirror mounting hole of the tube core and locked; the navigation stick is inserted into the navigation stick mounting hole of the tube core and locked; the tube core is inserted into the channel, the tongue-shaped handle corresponds to the position of the chuck, and the channel and the tube core are connected through a connector to form a cranial surgery channel device; the tube core is inserted into the brain tissue under the guidance of the navigation system, and the observation mirror visualizes the brain tissue passed through by the front end of the cone head, and the target position is adjusted and inserted according to the real-time image; the connector is loosened, the tube core is withdrawn from the channel, and the channel remains in the brain tissue for surgery. The present invention is used for cranial surgery.

The present invention discloses an automatic milling cutter flushing device for neurosurgery craniotomy, which relates to the technical field of medical devices and comprises a handle support and a rotating milling cutter. A cooling device for cooling the milling cutter is arranged at the bottom end of the support, and the cooling device comprises a nozzle support and a nozzle. The nozzle support and the nozzle are slidably connected with the handle support. A plurality of water outlets are distributed in an inner circumferential array of the nozzle support, and the water outlets surround the outer circumferential side of the milling cutter. A first arc groove is arranged on the top surface of the nozzle, and a second arc groove is arranged on the bottom surface of the nozzle support. When the nozzle and the nozzle support are tightly connected, the first arc groove and the second arc groove are combined into an annular cavity for storing water. The coolant is transmitted to the nozzle support by adjusting a micro pump, and is sprinkled on the milling cutter through the water outlet to flush and cool the surface of the milling cutter. The operation is convenient, so that the surgical field of the main surgeon is not affected by the assistant, the workload of the surgeon is reduced, and the operation time is shortened.

The utility model relates to the technical field of sterile balloons, and discloses a sterile balloon device applied to craniocerebral operation ultrasonic exploration, which comprises a plastic pipe, two connecting pipes are connected to the tail end of the plastic pipe, liquid inlet pipelines are connected to the tail ends of the two connecting pipes, a Z-shaped block is arranged between the two liquid inlet pipelines, two pressing blocks are installed in the Z-shaped block in a sliding mode, and the two pressing blocks are connected with the plastic pipe. Two guide grooves are formed in each pressing block, a guide rod is slidably installed in each guide groove, a clamping groove is formed in each pressing block, two sliding grooves are formed in the Z-shaped block, and clamping blocks are slidably installed in the two sliding grooves; a first pipeline and a second pipeline are arranged in the plastic pipe, and a first balloon and a second balloon are connected to the plastic pipe. Accurate positioning can be carried out through the first balloon and the second balloon, accurate injection of a contrast agent is ensured through the liquid inlet pipeline and the like, injection of the contrast agent can be controlled through the Z-shaped block and the pressing block, adjustment is convenient, internal pressure can be stable through closing of the liquid inlet pipeline, and operation safety and accuracy are improved.