182 results about "Saccule" patented technology

The present invention provides complete extracorporeal test method of the dilation performance of saccule dilating intravascular rack. The test device consists of four parts including extracorporeal blood flow unit, machine vision unit, saccule inside pressure measuring unit, and image processing software. The test method includes simulating body's blood motion environment, making constant temperature liquid in closed hydraulic circulating system flow through transparent hose with inside blood vessel clog simulating plaque, setting the saccule and the rack inside the hose and measuring the size, shape, etc. of the rack during dilation with the machine vision unit and image processing software, and measuring the rack dilation pressure with the saccule inside pressure measuring unit.

The invention provides a locally-plugged thrombus scaler, which comprises a core tube, a sleeve, a first saccule, a second saccule and a thrombus scraping skein, wherein the sleeve is sleeved outside the core tube in a movable way; the first saccule is connected to the head end of the core tube; the second saccule is sleeved outside an inner tube of the sleeve; and the thrombus scraping skein is sleeved outside the core tube in a movable way and is arranged in front of the sleeve. By the locally-plugged thrombus scaler, two saccules are expanded simultaneously to plug thrombus deposition positions on veins and form a section of closed space, and thrombus is crushed and scraped by rotating the thrombus scraping skein in the closed space. The locally-plugged thrombus scaler can scrape thrombus completely, prevent vein inner membranes from being injured, discharge the thrombus from human bodies completely and prevent crushed small thrombus blocks from remaining in the human bodies, is suitable for scraping venous thrombosis of limbs of the human bodies and is particularly suitable for scraping the thrombus at the deep positions of femoral veins of the human bodies by using a percutaneous microtrauma surgical technology.

The invention provides a directional expanding saccule and a directional expanding device. The directional expanding saccule is used for directional expansion in human body and provided with a sac body and an injection port which is arranged on the sac body, wherein the sac body is provided with a fixed sac body part and an expanded sac body part which faces to the predetermined azimuth; the sac body is designed as follows: the expanded sac body part exceeds the shape of the expanded sac body and is expanded outwards towards the predetermined azimuth and the fixed sac body part is basically maintained in the shape of the fixed sac body part when pressure is injected into the sac body which is then expanded. The directional expanding saccule can be expanded towards the determined direction when biomaterials are injected, so that the biomaterials can also be injected into expected positions in vertebras only by introducing the saccule on an opening of a vertebral arch pedicle position on one side of the vertebras.

The invention discloses a drug-loaded saccule and a manufacture method thereof. The drug-loaded saccule comprises a saccule with a multivalve structure, wherein a drug-coated crystal layer is adhered to the surface of the saccule, and comprises an active drug and a drug mixture; the content of the active drug in the drug-coated crystal layer is gradually reduced from the surface of the saccule outward, while the content of the drug mixture is gradually increased from the surface of the saccule outward. The manufacture method comprises the following steps: firstly, folding the surface of the saccule; preparing drug-coating solutions with different proportions by using the active drug, the drug mixture and solvent as raw materials; then, sequentially coating the drug-coating solutions to the surface of the saccule according to a decreasing sequence of the content of the active drug, drying and crystallizing to obtain a multi-layer drug-coated crystal layer having the content of the active drug in a gradient descending shape inside-out; and finally, rolling and pressing the saccule to obtain the final drug-loaded saccule. The drug-loaded saccule has an excellent drug-loading performance, strong adhesion soundness and strong washing resistance.

A double sacculus device used for a curve section blood saccule expansible support comprises a pipe fitting, sacculus arranged on the pipe fitting, a dispersion stress pipe arranged on the back of the pipe fitting and a connecting piece. The pipe fitting comprises an inner sleeve and an outer sleeve, which respectively form a guiding cavity, a first filling cavity and a second filling cavity; the saccule on the pipe fitting comprises a center saccule and an extension saccule; the saccule has a design of three folds and is closely parceled; the center saccule is positioned in the extension saccule by which the center saccule is parceled; the tops of both the center saccule and the extension saccule are connected with the inner sleeve, but connection points are at different location; the ends of the inner sleeve are connected with the outer sleeves respectively; the cavities of the inner sleeve is communicated with the first filling cavity and the second filling cavity respectively; in the dispersion stress pipe and the connection piece, a double-layer cavity that is inosculated with each cavity in the pipe fitting. The invention solves problems of the prior art and changes an operating process by which both ends of a saccule are expanded first, which makes the center part of the complete saccule expand firstly and get a good adherence, and then the two end parts begin to expand.

The invention relates to a catheter with a strip saccule on the surface, which comprises a guide wire (11), an inner catheter (12), an outer catheter (13), a saccule body (A), strip bulges (14), concave channels (15) and a medicament coating (16), and is characterized in that: the surface of the outer catheter is provided with the saccule body formed by arranging and combining the strip bulges (14) and the concave channels (15) at intervals. The catheter with the strip saccule on the surface can carry more medicaments, ensures that the medicaments are difficult to fall off in the process of advancing, expanding and rubbing a vascular wall because the vascular wall is difficult to contact and rub the medicaments in the pits and concave channels on the surface, and can effectively improve treatment efficiency.

The invention discloses a congenital heart disease surgical saccule dilating catheter special for children. The heart disease surgical saccule dilating catheter special for children comprises a wire guide port, a water injection port, a fixed sleeve, an outer catheter, an inner catheter, a saccule and a guide wire; the rear end of the saccule is fixed on the outer wall of the front end of the outer catheter; the front end of the saccule is fixed on the outer wall of the front end of the inner catheter; a cavity which is formed by the inner catheter and the outer catheter is communicated with the water injection port; the guide wire is inserted into the inner catheter; the saccule is a small saccule which has a shape of a waist drum and of which the middle part is thick and two heads are thin; the total length of the saccule is 15 to 20mm; the diameter of each of two ends of the saccule is 15 to 20mm; the diameter of each of two heads of the saccule is 8 to 20mm; and the diameter of the middle part of the saccule is 2 / 3 to 4 / 5 the diameter of each of the two heads. The diameter of the middle part of the saccule is smaller than that of each of two heads, so the saccule can be accurately positioned on the narrow part of an artery and does not slip; the outer catheter is provided with scale marks to ensure accurate positioning; the chance that a patient suffering from pulmonary stenosis is damaged when the saccule is dilated can be obviously reduced, and safety of straight open thoracotomy is higher. The blank of the saccule dilating catheter special for the children at present is filled.

The invention provides a new percutaneous aortic valve replacing device which is characterized by the rational designation, convenient usage and low operational danger, which is to solve problems of inconvenient stitching of valve and cradle and high danger of using saccule to expand aortic valve in current aortic valve replacing device, the device is an automatic buckling cradle carrying biological valve, comprising cradle in nickel-tantalum alloy framework and trilobular one-way opening valve composed of pig heart bag. The nickel-tantalum alloy possesses functions of fixing and supporting, the trilobular valve is fixed tightly in the cradle. The product is characterized by the small injury, high safety, reduced complication caused by aortic valve replacement, and wide application prospect.

The sealed needle-less transfusion joint includes one casing, one liquid outlet joint with central hole adhered to the casing, one four claw elastic tab outside the needle tube, and one rubber tube outside the elastic tab matched with the liquid outlet joint and the needle tube wall. When the sealed needle-less transfusion joint is in use, the injector nipple compresses the rubber tube and the elastic tab to make the rubber tube form one saccule so that medicine liquid can enter to the saccule and further enter through the side hole to the needle tube, the liquid outlet joint and the retained vein needle. After finishing transfusion, the injector nipple is withdrawn, and the liquid is jetted fast through the liquid outlet joint owing to the resilience of the rubber tube, so as to rinse the vein needle and to avoid blood solidification.

The invention discloses a double-saccule blood vessel inner conduct pipe wherein the pipe is provided with an opening on one end, and a securing sleeve on the other end, the outer wall of the pipe is covered by a first saccule and a second saccule spaced by a finite distance on the opening end of the pipe, the saccule tube connector is inserted into the inner cavity of the pipe through the securing sleeve and is in communication with the inner cavities of the two saccules. The pipe is provided with a blood output hole, which is provided with a blood transfusion tube.

The invention relates to a multifunctional biliary tract stone extraction instrument which properly increases the diameter of a tube sheath to 3-5mm on the basis of the traditional biliary tract stone extraction basket. Meanwhile, the past single-cavity tube sheath is changed into a double-cavity tube sheath. An inner cavity can be used for biliary tract rinsing and radiography. An outer cavity is sealed, and the tail end is provided with a saccule-shaped device; the saccule-shaped device is stopped near the outlet of the inner cavity. An amount of water can be injected through an injection port at the position of a handgrip so as to control the size of the saccule. In addition, a scale mark is designed at a distance from the head end to the tail end of the basket tube sheath. The invention can complete the necessary operations of stone extraction, rinsing, radiography, expansion and the like in the biliary tract operation only by one instrument, can be suitable for both coeliotomy and laparoscopic surgery and is easy to master and popularize. The invention changes the current situation that laparoscope biliary tract probe must depend on a laparoscope, thereby being beneficial to the popularization of the biliary tract operations under the laparoscope in the hospitals at all levels.

The invention relates to a third generation PCI therapeutic saccule support system, a preparation method and application, and belongs to the field of biomedical engineering. The therapeutic saccule support treatment system comprises a catheter and a saccule, and is characterized in that the support is a naked support, and a therapeutic medicament and / or a cell coat are attached to the surface of the saccule. After the saccule expansion support is placed into a coronary artery through the catheter, the saccule is expanded through transient pressure so that the medicament or the cell coat on the saccule can tightly cling to the inner wall of a blood vessel so as to repair the blood vessel intima injured by saccule expansion. The system well combines the advantages of the first generation support system and the second generation support system so that the saccule carries the medicament to enter the blood vessel once, and the support is the naked support and only plays a role in supporting the blood vessel so as to well solve the problem of long-term non healing of the injured blood vessel caused by the sustainable medicament of the second generation support system, effectively prevent the formation of thrombus and restrain the occurrence of restenosis.

The invention relates to a contact limiting type double-saccule three-cavity catheter, and belongs to the technical field of medical assisting instruments. The three-cavity catheter is characterized in that a tube body is made of polymer blend; the outer walls of the two saccules of the catheter become thinner and thinner from the pointed end to the tail end of the three-cavity catheter; and the two saccules are symmetrically arranged on two sides of the tube body and between the pointed end and a drain tube cavity hole. The catheter is used according to the method that water injection or gas injection can be carried out as long as urine enters into the catheter; the two saccules of the catheter, which are arranged behind a bladder, tilt to the tail end in a water injection or gas injection state; the space formed between the saccule and the bottom of a bladder wall can sufficiently accommodate a vesical trigone; the catheter can be fixed in the bladder continuously without pressing the vesical trigone and ureter ports; a drain tube cavity drainage hole is adjacent to the ureter ports, so as to evacuate urine promptly and radically; and the pointed end of the catheter, a flushing pipe cavity outlet hole, a flushing pipe cavity, the two saccules, feed-through saccule water injection or gas injection tube cavities, the drain tube cavity drainage hole, a drain tube cavity, an anti-reflow valve and an excretion cavity tapered interface are connected to form an integral piece through the tube body.

The invention provides a compound active amnion material, a preparation method and application thereof and a compound active amnion uterine cavity repair stent. The preparation method comprises the following steps: (1) providing a collagen sponge prepare liquid or a compound collagen sponge prepare liquid; (2) providing an amnion with both an epithelial layer and a basement membrane; (3) pouring and coating the prepared prepare liquid on the basement membrane of the amnion to enable the basement membrane and the prepare liquid to be subject to crosslinking, and then preparing the compound active amnion material through freeze drying. The compound active amnion material not only keeps the complete structure and the due biological function of the amnion but also endow the amnion with a certain rigidity, so that the compound active amnion material has stronger maneuverability in application after TCRA (Transcervical Resection Of Adhesions) operation; the compound active amnion uterine cavity repair stent integrates the compound active amnion material and a saccule at the front end of a pipe body, the saccule expands under the action of an external force to push out the compound active amnion material, and then the compound active amnion material is successfully attached to the inner wall of the uterine cavity; the stent is convenient to take out and prevents secondary damage.

The invention relates to the field of medical instruments and provides a valve conveying system for implanting a valve from apex cordis. The valve conveying system comprises a controlling unit and a conveying unit which are connected, wherein the valve is loaded on the conveying unit which is used for conveying, releasing and recovering the valve, and the controlling unit is used for controlling the conveying, the releasing and the recovering of the valve. The valve conveying system for implanting the valve from the apex cordis can implant a self-expandable asymmetrical valve from the apex cordis into the sickness position through an interventional method under the condition of minimal incision, so that the shortcoming that the existing conveying system cannot implant the asymmetrical valve from the apex cordis is overcome. In the aspect of controllability, the valve conveying system for implanting the valve from the apex cordis is superior to the existing system for implanting the valve from the arteria femoralis, and the self-expandable asymmetrical valve is superior to a saccule expanding valve, wherein, the position of the saccule expanding valve cannot be adjusted after the saccule expanding valve is released.

The invention provides a device for uterine hemostasis, which has a catheter body, one side of the catheter body is provided with an air inlet pipe, the other end of the inlet pipe is provided with an air outlet, and the front end of the catheter body is provided with a thickened balloon , a screw rod with a ring-shaped blocking block is set outside the catheter body, and a fixed block is installed near the air intake pipe. Corresponding to the thread of the catheter, the front end of the catheter body is provided with a first through hole and a second through hole. The present invention is mainly used in cases of bleeding during early pregnancy at uterine scars, and can solve the problem of difficult fixation of the lower end of the existing catheter, and can be adjusted and fixed according to the length of the patient's cervix, so that the balloon in the uterine cavity is close to the uterine cavity The wall can reduce the dead space of the uterus, and the screw rod can be adjusted according to the amount of bleeding or the fluid can be pumped to reduce pressure.

The invention relates to an expansion structure for expanding a saccule by high pressure, comprising an expandable saccule (1), an outer conduit tube (2), a flexible and hollow inner conduit tube (4) inserted in the outer conduit tube, and a Y-shaped connecting piece (6), wherein a closed passage is formed by one branch tube (10) of the Y-shaped connecting piece (6), the outer conduit tube (2), the inner conduit tube (4) and the expandable saccule (1). The expansion structure is characterized in that a plurality of through holes (3) are arranged on one section of outer conduit tube (2) positioned in the area of the expandable saccule. The through holes arranged on the outer conduit tube ensure that the expansion of the expandable saccule, which is perpendicular to the conduit tube direction, is firstly realized when the expandable saccule is inflated to expand, thereby greatly benefiting the ideal expansion of a compressed centrum, reducing the lengthwise expansion volume thereof, and providing an operation process with the effective function of restoration; and by observing the positions of a mark and a sign (9), the position of the expandable saccule (1) can be deduced, thereby enabling the expandable saccule to freely reach an afflicted part.

Disclosed is a saccule uterine lifter which is characterized in that the saccule uterine lifter is an elastic uterine saccule which can be disposed into a uterine cavity and can expend in the uterine cavity to lift the uterus after being charged with gas or water. The elastic uterine saccule is fixedly arranged at the foreside of a guide rod, and the sealed cavity of the elastic uterine saccule is communicated with the outside through a gas-liquid passage at the front end. After the saccule is emptied, the elastic uterine saccule can be easily disposed into the uterine cavity through the guide rod, and the fully expanded elastic uterine saccule for one thing lifts the uterus and for the other thing fixes the guide rod and the uterus relatively, thus effectively avoiding damages from a cervical clamp and damages to the endometrium. The expanded uterine saccule is also good for preventing perforation of the uterus caused by over elevation of the guide rod, and is safe and reliable to use.

The invention discloses a drug saccule which comprises a saccule body and protective film. The protective film is provided with one or more closed gaps; the saccule is wound by the protective film, and the two ends of the protective film are fixedly connected to the two ends of the saccule body respectively. The drug saccule has the advantages that the surface of the saccule body is wound by a layer of protective film with the closed gaps, and drugs are prevented from being washed by blood flow; when the saccule body is engorged, the closed gaps of the protective film are opened, the drugs are exposed on a blood vessel wall, a larger number of the drugs are transferred to blood vessel tissue, and the purpose of treatment is achieved.

The invention relates to a minimal invasive centrum elastic capsule. The invention aims at the shortcoming that doctor needs to regulate the angle of a puncture needle for many times during the puncturing process when the current centrum expanding saccule conduit device is used and provides the minimal invasive centrum elastic capsule which can be punctured once in order to build a working channel during the puncturing process for curing osteoporosis spinal column compression fracture. The capsule of the invention comprises an elastic capsule, an inner conduit, an outer conduit, a conduit, a Y-joint, a port and a guide rod, wherein the front end of the elastic capsule is fixed with the front end of the inner conduit; the back end of the elastic capsule is clamped between the outer conduit and the conduit; the conduit is connected with a front connector of the Y-joint; a back connector of the Y-joint is connected with the port; a closed channel is formed by connecting the inner cavity of the elastic capsule with the outer conduit and the Y-joint; the guide rod is inserted in the inner conduit; the back end of the guide rod is provided with a handle; the handle is threaded to the port; and a developing ring is arranged on the inner conduit in the cavity of the elastic capsule.

The invention relates to a device for taking out a metal bracket in a vas or a non-vascular cavity. The device comprises a phase transition energy supply device for a shape memory alloy bracket, the shape memory alloy bracket having memory effect and a control system for the energy supply device, wherein the phase transition energy supply device for the shape memory alloy bracket supplies phase transition energy to the shape memory alloy bracket to induce the memory effect of the shape memory alloy bracket having the memory effect, so as to make the shape memory alloy bracket having the memory effect recover to a shrinkage state and clasp a guide wire and a saccule; and under X-ray or CT image monitoring, the shape memory alloy bracket having the memory effect is taken out by means of an intervening instrument. The device provides a method for taking out the bracket in the vas or the non-vascular cavity, and the method has the advantages of compact and clear principle, convenient operation, safety, easy implementation, and is suitable for clinical application; and the implementation of an operation process is based on the prior mature vas or non-vascular intervening technique and has little side effect to the body.

The invention discloses saccule equipment for orthopaedics. The saccule equipment comprises an inner layer saccule, an outer layer saccule and a propelling ring, wherein under the assistance of a guide wire and a conveying pipe, the outer layer saccule together with the inner layer saccule is transported to an affected part of the fracture end through a power transmission end, and then a developeris injected to the inner layer saccule through an injection pipeline, so that the inner layer saccule is expanded, and at the same time, the outer layer saccule is expanded along with the traction offlexible arc-shaped rods; then medicines are transported to the inner part of a medicine applying pipeline through a medicine applying through pipe; the medicines enter a cavity between the outer layer saccule and the inner layer saccule, and are impregnated into the affected part of the fracture end through medicine applying holes; under the assisting of a driving rod, the propelling ring is pushed to the outer layer saccule along the conveying pipe through an external driving and transporting end; the propelling ring is manufactured from magnetic materials, and the magnetic property of thepropelling ring is opposite to that of a magnetic suction coating; through magnetic attraction, the propelling ring is led to be clamped with the magnetic suction coating; and the affected part of thefracture end is subjected to freshness through stab-shaped protrusions.

The invention relates to an intracavity stent conveying system for pre-implanting a saccule at a front end, which belongs to the field of medical apparatuses. The saccule and a stent are designed integrally in the system; the saccule is designed at the far end of the stent; the saccule is arranged on an inner core and is separated from the stent, but is connected with the stent end to end; the farend and the near end of the saccule are provided with heavy metal markers not transmitting X rays; the stent is arranged at the near end of the saccule and is positioned in a cavity gap between the inner core and an outer sleeve; and the near end of the outer sleeve is provided with a safety lock. The release of the stent depends on the withdrawal of the outer sleeve relative to the inner core; and the stent can be released by unscrewing the safety lock, fixing the inner core and withdrawing the outer sleeve. The saccule can expand target lesions before releasing the stent, can anchor the inner core during releasing the stent, and can further expand the stent after releasing the stent. The intracavity stent conveying system makes stent implantation simpler, saves medical cost, shortens operation time, and reduces complications; and the saccule can anchor the inner core of the conveying system in operation so as to release the stent accurately.

The invention discloses an incision surgical knife which comprises a guide pipe, an elastic element, an operating handle, a first guide wire and a saccule, wherein the guide pipe is in a hollow structure, is provided with a side hole, a groove, a thread eye and a gas injection water injection hole which are sequentially arranged from the front end to the terminal end; the elastic element is embedded in the groove, and the rear end of the elastic element is fixed with the guide pipe; the operating handle is sheathed outside the guide pipe and can slide along a guide pipe shaft; the first guide wire is arranged in the guide pipe, the front end stretches out from a guide wire hole and is fixed with the front end of the elastic element, and the terminal of the first guide wire is fixed with the operating handle; and the saccule is fixed at the top of the guide pipe in a sealing way, and the side hole is arranged in the saccule. The operation incision knife provided by the embodiment of the invention is designed specially for full resection of mucous membrane in minimally invasive surgery, thus full resection on a large-area mucous membrane can be rapidly and effectively carried out in an operation, viscera except the mucous membrane can be effectively avoided, peripheral viscera can not be damaged, surgical risk is reduced, and success rate of a surgery can be improved.

The invention relates to the medical instrument field for restoring human body aorta in cavity, especially a saccule conveyer. At present, the saccule applied to clinical can completely block the aorta blood flow when the saccule is complete expanded, so that the saccule near-end pressure can raise and the saccule far-end pressure can reduce. The blood flow can generate stronger impact force to the saccule, at this point, because the saccule and a tectorial membrane frame is attached tightly, the saccule may drag the tectorial membrane frame to move towards the far end, so the serious bad results are generated. The main object of the invention is to provide a saccule conveyer, when the saccule is complete expanded and is attached tightly with tectorial membrane frame, the blood flow can not be blocked completely, a pressure difference between the saccule near end and the saccule far end can not be over large, the impact force of the blood to the saccule can be reduced. The stronger axial supporting force of a sheath tube can counteract the impact force of the blood flow to the saccule far end, so that the saccule can not drag the tectorial membrane frame downwards.

A vascular endocatheter with multiple spherical bags for segmentally blocking the blood vessel in lesion for cutting it off and then quickly restoring the blood supply to organs is composed of a tube bodywith an open end and a fixing sleeve at its another end and at least three spherical bags fixed to the external surface of tube body. Said external surface of tube body has lateral holes. The gas delivering tube or perfusion tube is inserted in the tube body via said fixing sleeve and communicated with the internal cavities of said spherical bags.

The invention discloses a renal artery directional blocking device comprising a clamping slot, wherein one side in the clamping slot is provided with a saccule which is connected with a gas filled tube, and a gas valve is arranged on the gas filled tube. An opening structure at the front end of the renal artery directional blocking device greatly facilitates the fixing of the blocking device around renal artery without surrounding, and the saccule can be quickly removed after the saccule is deflated, namely the blocking can be stopped in midway to temporarily restore the infusion of kidney, so as to be more beneficial to the protection for renal function. The renal artery directional blocking device is reliable in fixing after the device is fixed around the renal artery, can achieve the effect of truly blocking the renal artery, and can quickly and precisely adjust the blocking pressure on the renal artery at any time according to anatomical variations of different individuals, requirements of an operator and changes in the operation, with really reliable blocking effect. Under the condition of incomplete blocking, a patient can also take a medicine for protecting the kidney, the medicine can be directly involved in the metabolism of the kidney at the side, so as to protect the renal function according to actual situation in the operation to the greatest extent.

The invention discloses a stent distracting vena cava membrane breaker applied to endovascular therapy. In an interventional therapy membrane Budd-Chiari syndrome method used in recent years, a hollow puncture needle is used, and the principle is: breaking a membrane with the puncture needle, making a guide wire pass through the membrane, and guiding a saccule to expand for eliminating a narrow section, or directly breaking the membrane with the guide wire. The key point of the technology is that: a needle head is aligned with the center of the membrane with appropriate force. The defect is that: if the needle head is not aligned with the center but is deviated towards the periphery, and excessive force is applied, blood vessels are broken, and hydropneumothorax or cardiac tamponade which endangers the life of a patient is caused by wrong insertion of the needle head into a pleura or a pericardium. The invention provides a stent which can contract and expand is arranged on the head part of a puncture needle sheath catheter on the basis of the conventional puncture needle, and stronger support force and more accurate directional property are provided for a membrane breaking needle under the coaction of the unfolded stent and a blood vessel cavity. By adopting the stent distracting vena cava membrane breaker, the defects of the prior art can be overcome, and a good membrane breaking effect is achieved.

The invention discloses an anti-blockage easily inserted three-cavity catheter device, which comprises a catheter, and a blood clot breaker and an inner core, which are matched with the catheter; a spring steel wire is arranged in the wall of the catheter; a saccule is arranged on the front of a water cavity; an elliptical hole is formed on the middle ring surface of the saccule; due to the arrangement of the spring steel wire, the wall thickness of the catheter is reduced, an inner cavity of the catheter is enlarged, the blockage is reduced, and the smooth drainage is ensured; the spring steel wire has elasticity, the spring steel wire is squeezed and deformed a little when inserted, is expanded after being inserted, and is elastically fixed with a urethra so as to avoid a urine leakage phenomenon; the saccule is arranged on the front of the water cavity, and is provided with a drainage hole; and when the drainage is not smooth due to blood clots, the blood clot breaker is used for breaking the blood clots to ensure the smooth drainage.