31 results about "Catheter indwelling" patented technology

The visible nasointestinal tube comprises a stomach tube, the end, entering the human body, of the stomach tube is a far end, and the other end of the stomach tube is a near end; the inner side of the stomach tube is sleeved with an intestinal tube in a clearance mode, the near end of the stomach tube is connected with a suction connector, the near end of the intestinal tube is connected with a feeding connector, the far end of the intestinal tube extends out of the far end of the stomach tube, the intestinal tube is connected with a visual system, and the far end of the visual system is a camera shooting end which is located at the far end of the intestinal tube. The utility model has the advantages that feeding and intragastric decompression are integrated, the catheter indwelling difficulty can be reduced, and the catheter indwelling injury can be reduced.

The utility model provides a catheter fixing patch with a water absorption sponge, relates to the technical field of medical instruments, and aims to solve the problems that in the catheter indwelling process of a patient, blood exudation at the puncture position of a catheter is caused by various reasons, the catheter slips, the catheter is easily pulled out due to external slight traction force, and the use effect of the catheter is affected. Comprising a fixed patch, a fixed arc block, a protective patch and a catheter, a group of guide holes are formed in the right end of the top of the fixed patch, two groups of connecting strips are fixedly mounted at the right end of the protective patch, and the two groups of connecting strips at the right end of the protective patch are fixed at the left end of the fixed patch; the catheter can be conveniently and rapidly fixed, the fixing effect of the catheter is improved, when the outer end of the catheter is accidentally pulled, the two sets of supporting frames move inwards, the catheter extends, the situation that the catheter is pulled out due to external slight pulling force is avoided, the slippage rate of the catheter is reduced, the safety of the device is improved, seepage is timely absorbed through the water absorption sponge, and the service life of the device is prolonged. The puncture point is kept dry.

The invention discloses a puncture device and a puncture method thereof, and belongs to the technical field of medical instruments.In the puncture device, a limiting piece is arranged on a second component, and the limiting piece is used for limiting a first component, so that the first component can drive the second component to move towards a third component; the guide pipe is connected with the second component, so that the guide pipe can move along with the second component; the puncture needle can be connected with the first component, so that the first component drives the puncture needle to move when moving, the catheter can be driven to penetrate through the tissue together when the puncture needle punctures, the puncture needle can be withdrawn, the catheter is left in the tissue for subsequent operative treatment, and damage to the tissue in an operation is reduced.

An integrated peripheral intravenous (IV) catheter configured for blood draw both at the time of catheter placement and during catheter indwell. The peripheral IV catheter includes a catheter adapter having a catheter configured to be inserted into a patient's vasculature and a side inlet defining a fluid pathway into and out of the catheter. The peripheral IV catheter also includes a side port member having a main branch, the main branch including a distal end configured to couple the side port member to the side inlet of the catheter adapter and a connector portion accessible via a proximal end of the main branch. Additionally, the peripheral IV catheter includes a blood collection adapter removably and directly coupled to the connector portion of the side port member at the proximal end of the main branch. Furthermore, side pore member of the peripheral IV catheter may include a side branch.

The utility model relates to a kind of self-urination metal catheter, it includes the catheter body woven by metal wire, the distal end of catheter body is provided with bending anti-off structure to prevent the distal end of catheter body from being outwardly off from bladder in indwelling state, the proximal end of catheter body is close to external sphincter after passing through prostate area, the proximal end of catheter body is connected with fixed anchor placed in urethra by connecting line, fixed anchor is located at the outside of external sphincter and cannot slide to prostate area inwardly by the block of external sphincter, one end of fixed anchor is connected with traction rope, the other end of traction rope is stretched to patient's outside through urethra.The advantages are that new structure and material are used, infection risk can be effectively reduced, catheter indwelling time is prolonged, and stimulation to urethra or other urinary tissues is reduced;Catheter indwelling period does not need to use urine bag, and patient can self-control urination, improve life quality;Catheter body woven by metal wire is moderately soft and hard, and has good self-adaptability.

The utility model discloses a biopsy puncture device, and belongs to the technical field of medical instruments.In the biopsy puncture device, a limiting piece is arranged on a second component, and the limiting piece is used for limiting a first component, so that the first component can drive the second component to move towards a third component; the guide pipe is connected with the second component, so that the guide pipe can move along with the second component; the puncture needle can be connected with the first component, so that the first component drives the puncture needle to move when moving, the catheter can be driven to penetrate through the tissue together when the puncture needle punctures, the puncture needle can be withdrawn, the catheter is left in the tissue for subsequent operative treatment, and damage to the tissue in an operation is reduced.

The invention discloses a multi-parameter early warning method and system for catheter blockage risk prediction, and relates to the technical field of catheter blockage risk monitoring, and the method comprises the steps: obtaining multi-modal monitoring parameters of a patient during a catheter indwelling period, and building individual dynamic baselines corresponding to the parameters based on the data of the multi-modal monitoring parameters in an initial stable period; calculating a basic risk contribution value corresponding to the parameter according to the deviation between the multi-modal monitoring parameter at the current moment and the individualized dynamic baseline, and calculating a risk fluctuation entropy based on the time sequence fluctuation distribution of the parameter in the sliding time window; jointly inputting the basic risk contribution value and the risk fluctuation entropy into a risk accumulation channel for time sequence fusion, and meanwhile, triggering a risk attenuation channel in combination with a nursing intervention event to attenuate a fusion result to obtain a dynamic risk score; and analyzing the coordination consistency of different types of multi-modal monitoring parameters on time sequence fluctuation, and generating a multi-parameter fluctuation coordination index.

The visual jejunum tube comprises a catheter body and a guide wire assembly, the guide wire assembly is installed in an inner cavity of the catheter body, the guide wire assembly comprises a guide wire body, the camera, a carbon dioxide sensing element and an acidity sensing element, and a signal transmission line is embedded in the guide wire body. The camera is connected with the industrial control computer through a signal transmission line; the industrial control computer comprises a display screen, an alarm module and a data processing unit, and the alarm module is linked with a carbon dioxide sensing element arranged at the front end of the guide wire body. Images in the digestive tract can be transmitted in real time through the miniature camera integrated at the front end of the guide wire, an operator can clearly observe the advancing path of the catheter in cooperation with the shapeable guide wire, physiological stenosis and important tissue are accurately avoided, damage to the mucous membrane of the digestive tract is reduced, and the catheter indwelling success rate can be greatly increased.

The invention relates to the technical field of medical instruments, in particular to a disposable surgical drainage system with an image processing function, which comprises a drainage tube body, a visual component, a near-end connecting structure, a mobile terminal adaptation module and an AI image analysis module, the system aims at solving the technical problems that an existing medical drainage tube is single in function, depends on external imaging equipment for positioning in the implantation process and is prone to causing tissue damage during operation. The drainage tube is technically characterized in that a miniature 4K camera module and an LED lighting source are integrated at the tip of the drainage tube body, and tissue images in front of the tube end can be acquired and transmitted in real time; and the AI image analysis module is matched to complete lesion related parameter acquisition and property auxiliary discrimination. A doctor can directly observe a drainage path and a target area through external equipment and synchronously obtain auxiliary evaluation information. Accurate and safe catheter indwelling and auxiliary diagnosis are achieved. The device is mainly used for clinical drainage operations and bedside monitoring in neurosurgery, general surgery, thoracic surgery, cardiac surgery and abdominal surgery.

The utility model relates to a PICC catheter indwelling auxiliary cart which comprises a cart body, the cart body comprises a table top, a storage rack is arranged above the table top, guardrails are arranged on the periphery of the table top, supporting legs are arranged below the table top, a storage device is arranged at the bottom of the table top, a connecting piece is arranged on one side of the table top through bolts, and the connecting piece is hinged to an arm supporting device. The arm supporting device comprises a supporting plate, a soft cushion and a lifting supporting rod, the bottom of the lifting supporting rod is hinged to the connecting piece through a first rotary knob, the lifting supporting rod is hinged to the supporting plate through a second rotary knob, the soft cushion is connected with the supporting plate through a bolt, the lifting supporting rod can freely adjust the height of the supporting plate vertically, and the supporting plate can move. According to the utility model, the support function can be provided for meeting the requirements of arms of patients with different body positions and different heights, the fatigue of the patients is relieved, the comfort is improved, the pollution caused by the physical strength of the patients in the disinfection process is avoided, and the indwelling catheter requirements in different environments are met.

The invention relates to the technical field of varicosity treatment instruments, and discloses a blood vessel sheath for chemical ablation and thermal ablation and a using method thereof.The blood vessel sheath comprises a tube sheath and a connecting tube, the tube sheath is provided with a near end and a far end which are opposite, a tube placing channel is formed in the tube sheath in the axial direction in a penetrating mode, and a plurality of through holes are formed in the far end in the radial direction of the tube sheath in a penetrating mode; one end of the connecting tube is connected with the tube sheath, and each through hole, the tube placing channel and the connecting tube are communicated with one another. When chemical ablation treatment is carried out, after one end of the drainage catheter penetrates through the catheter indwelling channel to reach a target position, redundant blood in a blood vessel is discharged through the negative pressure aspirator, then the hardener injector is connected with the connecting tube, and a hardener is injected into the blood vessel through the through holes, so that the concentration of the hardener in the blood vessel is increased; when the ablation sheath is used for treatment, the negative pressure aspirator can be connected with the connecting tube, redundant blood in a blood vessel is discharged through the through holes, and the distance between the ablation electrode and the wall of the blood vessel is reduced.

The utility model belongs to the technical field of medical instruments, and particularly relates to an anti-blocking drainage device. The negative pressure drainage device comprises a drainage tube, a flow guide tube and a negative pressure liquid storage tank, the flow guide tube is arranged in the drainage tube, the inner wall of the drainage tube is tightly attached to the outer wall of the flow guide tube, a drainage section is arranged at one end of the drainage tube, the other end of the drainage tube is connected with the negative pressure liquid storage tank, and a drainage hole is formed in the side wall of the drainage section. One end of the flow guide pipe is provided with a liquid guide hole corresponding to the drainage hole. The drainage tube and the flow guide tube are arranged, so that the risk of secondary catheter indwelling after a single-layer drainage hose is blocked is avoided, the pain of a patient is reduced, and the patient is promoted to recover quickly. A limiting convex ring is arranged to prevent body fluid from entering the guide tube due to dislocation of the drainage tube and the guide tube, so that blockage is reduced.

The invention belongs to the field of biological medicine, and particularly relates to a medicine for treating EGFR mutation non-small cell lung cancer meningeal metastasis, application, a medicine box and a preparation method of the medicine, the medicine is a freeze-dried powder preparation or injection of EGFR-TKIs for subarachnoid space injection, the amount of EGFR-TKIs per person in the medicine is 0.01-5 mg, and the amount of EGFR-TKIs in the medicine is 0.01-5 mg. The injection method comprises any one of lumbar puncture, bridge forebay indwelling catheter injection and Ommaya capsule injection. The prepared EGFR-TKIs injection can be directly injected into the subarachnoid space, the drug concentration in cerebrospinal fluid of a patient is greatly improved, the cerebrospinal fluid / plasma concentration ratio of the EGFR-TKIs injection is increased from far less than 1 to more than 2 times and even can reach more than 10 times, and the EGFR-TKIs injection can completely solve the problem of insufficient dosage caused by a blood-brain barrier after oral administration of a targeted drug and has a good application prospect. The medicine takes effect quickly, and the treatment effect on lung cancer meningeal metastasis can be remarkably improved.

The utility model relates to the technical field of medical instruments, and discloses a drainage catheter indwelling fixator which comprises a drainage catheter body, a movable fixator is arranged on the outer wall of the drainage catheter body, a pressing block is connected to the inner wall of the movable fixator in a sliding mode, and a pressing side plate is fixedly connected to the side wall of the pressing block. A first spring is fixedly connected to the bottom of the pressing side plate, a second spring is fixedly connected to the interior of the movable fixator, an inner movable block is fixedly connected to one end of the second spring, a clamping block is fixedly connected to the side wall of the inner movable block, and a clamping groove is formed in the outer wall of the drainage catheter body. The side wall of the movable fixator is fixedly connected with a fixing assembly. According to the drainage catheter fixing device, the drainage catheter body can be stably fixed in the clamping groove in the middle of the movable fixator through the arranged movable fixator, the clamping block in the movable fixator and the clamping groove in the drainage catheter body are matched with one another, and the drainage catheter fixing device is convenient and fast to use and wide in application range.

The invention relates to the technical field of nursing tools, in particular to a venous catheter indwelling nursing tool which comprises a first supporting leg and a second supporting leg connected to the first supporting leg and further comprises a fourth supporting leg and a third supporting leg, the fourth supporting leg and the third supporting leg are the same in structure, the fourth supporting leg is connected to the first supporting leg in an inserted mode, and the third supporting leg is connected to the second supporting leg in an inserted mode. Round corners are arranged at the end of the fourth supporting foot and the end of the third supporting foot, the fourth supporting foot can be matched with the third supporting foot to clamp the iodophor cotton ball, the scraping plate is connected to the end of the fourth supporting foot and the end of the third supporting foot, and a flow guide part is arranged on the lower portion of the scraping plate. The flow guide part can drive fester to guide flow of the iodophor cotton balls clamped by the fourth supporting leg and the third supporting leg. When the tool is actually used, the third supporting leg and the fourth supporting leg can drive the iodophor cotton ball to wipe the skin of a patient, and the skin of the patient can be prevented from being punctured by the third supporting leg and the fourth supporting leg.

The invention provides a midline catheter data processing method and system based on ultrasonic guidance, and relates to the technical field of data process.The method comprises the steps that a part image corresponding to a pre-marked puncture part is obtained, a recommended puncture area is determined according to the part image, and a recommended puncture point is determined in the recommended puncture area based on ultrasonic equipment; and constructing a part model of the puncture part and a catheter model of the midline catheter, generating a catheter indwelling simulation video according to the recommended puncture point, the part model and the catheter model, and controlling the catheter indwelling simulation video to be displayed on visual perception equipment based on the catheter indwelling operation signal. The distance difference value between the midline catheter and the catheter model in the catheter indwelling simulation video is determined based on the catheter indwelling pause signal, and the catheter indwelling simulation video is dynamically regulated and controlled according to the distance difference value, so that a patient can intuitively know the real-time progress of catheter indwelling operation, the actual catheter indwelling operation and the simulation process are tightly synchronized, and the catheter indwelling efficiency is improved. And the experience of the patient is improved.

The invention relates to the field of digital systems, in particular to a jejunum nutrient canal indwelling auxiliary system. Comprising a jejunum nutrient canal and an indwelling catheter auxiliary module, and the indwelling catheter auxiliary module is used for generating an indwelling catheter guide instruction according to a corresponding guide vector in the indwelling catheter process of the jejunum nutrient canal; the catheter indwelling auxiliary module is executed according to the following steps that every time when the driving motor rotates by a guiding angle, a guiding vector at the current moment is obtained; inputting the guide vector into a target judgment model to generate guide information corresponding to the current moment; the insertion guide wire is guided. The guide vector comprises a plurality of variable values and fixed values, and the relative position between the first guide magnet and the second guide magnet in the body can be reflected more accurately through the combination of the latitude values, so that a model can predict more accurate guide information according to the guide vector. Due to the fact that the movement freedom degree of the guiding end in the stomach is larger, the guiding end can pass through the pylorus more easily, and the risk of damage to the stomach wall is reduced.

The invention provides a hemodialysis catheter related blood flow infection risk screening system and method, and belongs to the technical field of medical management, and the system comprises an information input module which is used for inputting patient case information; the data acquisition module is used for acquiring multi-source data such as catheter indwelling operation records, catheter indwelling time and daily maintenance records; the risk screening module is used for screening catheter-related blood flow infection risks and determining risk levels; the evaluation module is used for evaluating the patient state and the catheter state; and the diagnosis judgment module is used for judging whether a catheter-related blood flow infection diagnosis standard is met or not and generating treatment intervention notification information. The method has the beneficial effects that by screening and determining the risk of blood flow infection related to the catheter, further evaluating the patient and catheter states, and combining an evaluation result, clinical manifestation and a microbiological examination result, judging whether an infection diagnosis standard is met and generating a treatment intervention notice, the screening efficiency is improved, and the infection occurrence rate is reduced; the treatment effect and prognosis of a patient are improved.

A catheter assembly includes: an inner needle having a blade surface at a distal end; a catheter through which the inner needle is inserted; a catheter hub through which the inner needle is inserted and that is fixed to a proximal end of the catheter; a valve located in an internal space of the catheter hub, wherein the valve includes a pair of inclined portions that are inclined so as to become closer to each other in a distal direction, an end surface located at distal ends of the pair of inclined portions, a front slit formed along a longitudinal direction of the end surface, and a pair of side slits formed on side surfaces between the pair of inclined portions from both ends of the end surface; and an opening member.

A catheter assembly includes: an inner needle having a blade surface at a distal end; a catheter through which the inner needle is inserted; a catheter hub through which the inner needle is inserted and that is fixed to a proximal end of the catheter; a valve that comprises a pair of inclined portions that are inclined so as to become closer to each other in a distal direction, an end surface located at distal ends of the pair of inclined portions, and a slit formed along a longitudinal direction of the end surface, wherein the valve is located in an internal space of the catheter hub; and an opening member that is located in the internal space, is formed in a tubular shape, has a space inside, is located proximal of the valve in an initial state, and is configured to move in a distal direction to open the valve.

The utility model relates to a drainage catheter and a drainage assembly, and relates to the technical field of medical instruments. The drainage catheter comprises a catheter body, one end of the catheter body is a drainage end, and the other end of the catheter body is a non-drainage end; a plurality of drainage holes are formed in the peripheral surface of the drainage end of the tube body; the end face of the non-drainage end of the tube body is in an opening state; the tube body comprises a soft tube section and at least one hard tube section located at or close to the non-drainage end. The drainage assembly comprises a drainage catheter and a bone nail assembly, and the bone nail assembly comprises a rod body and a tail cap. The drainage catheter is used in cooperation with the bone nail assembly, the anti-infection effect is guaranteed in the drainage operation, meanwhile, the catheter indwelling difficulty is lowered, and injuries caused to a patient are reduced.

The invention discloses a catheter sealing cap for preventing catheter infection, belongs to the technical field of catheters, and aims to solve the problems that in the catheter indwelling process, bacteria move towards a catheter opening along the outer wall of a catheter, and when the catheter sealing cap is separated from the catheter, the bacteria move upwards to the catheter opening along with the movement of the catheter sealing cap, and intracavity pollution is caused. A liquid storage tank is fixedly installed in the pipe sealing cap body, a fixing column is fixedly installed on one side of the liquid storage tank, a first button is slidably connected to one end of the pipe sealing cap body, three first elastic rods are fixedly installed on one side of the first button, and the three first elastic rods are connected to one side of the pipe sealing cap body and one side of the liquid storage tank in a penetrating mode. According to the catheter sealing cap, the surface of a catheter can be sterilized and disinfected, the situation that bacteria move towards a catheter opening along the outer wall of the catheter, and intracavity infection is likely to be caused is prevented, and the wiping pieces can be used for sterilizing and disinfecting the surface, close to the end of the catheter sealing cap body, of the catheter; the tube sealing cap body is prevented from driving bacteria to upwards migrate to the catheter opening.

The application belongs to the field of biological medicine, and particularly relates to a drug for treating EGFR mutant non-small cell lung cancer meningeal metastasis, application, a medicine box and a preparation method of the drug, the drug is a lyophilized powder preparation or injection solution for subarachnoid injection of EGFR-TKIs, the amount of EGFR-TKIs in the drug is 0.01-5 mg per person, and the injection method comprises any one of lumbar puncture, injection through a catheter indwelled in the pre-bridge pool and Ommaya capsule injection. The prepared EGFR-TKIs injection solution can be directly injected into the subarachnoid space, greatly improving the drug concentration in the cerebrospinal fluid of the patient, the cerebrospinal fluid / plasma concentration ratio is increased from far less than 1 to more than 2 times, and even more than 10 times. The application can completely solve the problem of insufficient dose caused by the blood-brain barrier after oral administration of a targeted drug, and the drug has fast effect and can significantly improve the treatment effect of lung cancer meningeal metastasis.

The invention discloses an intelligent fixing patch integrating skin barrier protection and traditional Chinese medicine intervention, belongs to the technical field of medical treatment, and aims to solve the problems that the skin of a catheter position is protected, traditional Chinese medicine intervention can effectively prevent and treat red and swollen and pruritus possibly caused by catheter indwelling of an indwelling needle, and abnormal conditions such as errhysis, exudation and red and swollen of the catheter position are inconvenient to monitor in time. The intelligent monitoring and alarming device comprises a protective film, a medicine carrying gauze layer is arranged on one side of the protective film, an elastic cotton adhesive tape is bonded to the bottom layer of the medicine carrying gauze layer, a Y-shaped shearing opening is formed in the bonding end of the medicine carrying gauze layer and the elastic cotton adhesive tape, and an intelligent monitoring and alarming device is arranged at the Y-shaped shearing opening. Integration of the four functions of catheter fixation, skin barrier protection, traditional Chinese medicine intervention and intelligent monitoring is achieved, and the problem that a traditional fixing patch is single in function is solved.

The invention belongs to the field of medical instruments, and discloses an ultrasound-guided nerve block puncture device which comprises a puncture catheter unit and a subcutaneous tunnel unit and further comprises a pasting part and a clamping part. The puncture indwelling catheter unit comprises a puncture needle and an indwelling catheter, the puncture needle and the indwelling catheter jointly pierce from a first puncture point, and after the puncture needle reaches a target area, the indwelling catheter is axially pushed to the target area along the puncture needle; the subcutaneous tunnel unit is used for puncturing from the second puncture point, the puncture needle is slidably connected to the interior of the indwelling catheter, and a subcutaneous tunnel for the tail end of the indwelling catheter to penetrate through is constructed between the first puncture point and the second puncture point; the indwelling catheter is arranged on the outer side of the puncture needle in a sliding and sleeving mode, the puncture needle provides rigid support for the soft indwelling catheter, guidance is provided for movement of the indwelling catheter, and it is ensured that the indwelling catheter can reach a target area along a preset track; and the problem that the indwelling catheter is easy to deviate and distort due to secondary catheter indwelling after needle withdrawing in the traditional method is effectively avoided.

The utility model provides a nasal catheter fixing and protecting suit. The nasal catheter fixing and protecting suit is composed of a nose wing fixing and protecting device and an ear hanging type free fixing device. The nose wing fixing and protecting device is a butterfly wing-shaped annular patch, nose wing silica gel patches attached to the nose wing and the skin, close to the periphery of the cheek, of the nose wing are arranged on the two sides of the nose wing fixing and protecting device, and the nose wing silica gel patches are provided with first catheter clamping grooves. A nasal columella protection patch and a middle protection patch which are distributed at intervals are connected between the nose wing silica gel patches on the two sides, the nasal columella protection patch is pasted on the surface skin of the nasal columella, the two ends of the nasal columella protection patch are integrally connected with the nose wing silica gel patches, and the middle protection patch is pasted on the surface skin of the middle of the human, and the two ends of the middle protection patch are integrally connected with the nose wing silica gel patches. The hanging lug type free fixing device is a C-shaped split ring, and a second catheter clamping groove is formed in the outer side wall of the upper portion of the split ring. According to the utility model, the risk that the integrity of the nose wing skin is damaged due to long-term catheter indwelling is reduced on the whole. And meanwhile, the catheter is fixed.

The utility model provides an occluder bending structure and an occluder, and relates to the technical field of medical instruments.The occluder bending structure comprises a connecting pipe, a fixing block, a hose, an inflation pipe, a wrapping catheter, a supporting pipe and a bronchial catheter, and the connecting pipe is provided with a hose imbedding end, an insertion section, a supporting pipe cavity and an inflation cavity; an inflation tube connecting hole and a supporting tube connecting hole are formed in the hose. According to the scheme, the bending structure of the plugging device is simple in structure process, can be achieved through welding, bonding and other processes, is low in achieving difficulty and cost and can be used for low-value consumables; the overall structure of the adjusting structure is light, the overall mass of the plugging device is slightly increased, catheter indwelling is not affected, or the cuff is not displaced, the adjusting structure is small and exquisite, operation can be conducted with one hand, and the purpose of setting the adjusting angle is achieved by rotating the adjusting angle and arranging a clamping ball and a clamping groove.

The utility model discloses a simulation simulator for PICC maintenance training, which comprises a simulation model, a vein pipeline and a heart model are respectively and fixedly arranged in the arms and the trunk of the simulation model, and a PICC catheter is connected into the heart model through the vein pipeline; a visual window is arranged on the front side of the simulation model, a window plate is hinged to the visual window, and the visual window is located at the position where the heart model is located. A pressure air bag is installed in an arm of the simulation model, and the pressure air bag wraps the vein pipeline. A connecting rod is hinged to the outer side of the simulation model arm, and the end of the connecting rod is connected with the positioning buckle. The simulator for PICC maintenance training can simulate different states in the using process, so that the coping ability of medical staff is improved, the medical staff repeatedly practice until the medical staff skillfully handle various complications in the PICC catheter indwelling process, and the professional skill of nurses for PICC maintenance is helped to be improved.

The utility model relates to a catheter indwelling infusion needle, in particular to a catheter indwelling infusion needle with a thick and thin needle tube with a liquid passing side hole, which is structurally characterized in that the liquid passing side hole is arranged on the peripheral surface of one end of a puncture needle tube close to a needle tip, and the liquid passing side hole is communicated with an inner cavity of the puncture needle tube and positioned in an inner cavity of a hose; the puncture needle tube is of a two-part structure with a thin front part and a thick rear part, the needle tip part is a small-diameter needle tube, the other part is a large-diameter needle tube, and the liquid passing side hole is formed in the circumferential surface of one end, close to the step part, of the large-diameter needle tube; a funnel-shaped cavity is formed in the middle of the hose seat, and when the needle seat drives the puncture needle tube to slide backwards in the sliding groove of the containing tube and is stopped by the stopping device, the liquid passing side hole and the step part are both located in front of the sealing piece and in the funnel-shaped cavity. The utility model has the advantages that on one hand, the time for medical staff to observe blood return is shortened, and the operation is quick and convenient; on the other hand, a liquid passing outlet channel is added, it is ensured that the infusion flow speed meets the specification, meanwhile, pain of a patient is prevented from being increased, and convenience of puncture operation is improved.

The utility model provides a novel PICC (Peripherally Inserted Central Catheter) indwelling plaster, which comprises a non-woven fabric fixing plaster and a U-shaped indwelling plaster connected with the non-woven fabric fixing plaster, the U-shaped indwelling plaster is connected with the non-woven fabric fixing plaster in a tearable manner, a U-shaped limiting groove suitable for catheter indwelling is arranged on the inner side of the U-shaped indwelling plaster, and the U-shaped limiting groove is connected with the non-woven fabric fixing plaster in a tearable manner. A gallnut medicine layer and a permeable thin film layer are arranged downwards on each of the non-woven fabric fixing patch and the U-shaped indwelling catheter patch respectively; the application can be used for effectively fixing the indwelling catheter, cleaning is avoided, so that the pain of a patient is relieved, local inflammation absorption can be promoted, and the antibacterial purpose is achieved.