35 results about "Syringes needles" patented technology

The invention provides a device for assisting an Ommaya bag in extracting cerebrospinal fluid, and belongs to the technical field of medical instruments. Comprising an annular sterile positioning base and an injector, a through hole is formed in the middle of the annular sterile positioning base, a fixing cylinder concentric with the through hole is fixedly connected to the upper surface of the annular sterile positioning base, a stretching assembly is arranged on the right side of the fixing cylinder, and a tightening assembly is arranged in the fixing cylinder; elastic assemblies are arranged on the left side and the right side of the upper surface of the fixing cylinder. The operation sterile area is enlarged through the sterile adhesive layer and the transparent soft plate, the sterile adhesive layer composed of the nano-silver coating can achieve 72-hour continuous antibiosis, infection prevention and pathogen invasion risk reduction, the center position is located through concentric circle cross scales of the sterile semi-transparent film, guiding and visual positioning of the syringe needle are achieved, and the operation safety of the syringe needle is improved. The needle head can vertically penetrate into the center of a capsule cavity, and hematoma or capsule wall damage caused by puncture deviation is avoided.

The utility model relates to the technical field of syringe needle limiting parts, and discloses a stable muscle syringe needle limiting mechanism which comprises a supporting sleeve, a supporting plate and a syringe needle assembly, the supporting plate is arranged at the bottom of the supporting sleeve, and the syringe needle assembly is located on the inner side of the supporting sleeve and penetrates to the bottom of the supporting plate. An adjusting assembly is arranged on the outer side of the supporting sleeve, a limiting supporting assembly which is arranged on the outer side of the syringe needle assembly in a sleeving mode and fixedly connected with the adjusting assembly is arranged in the supporting sleeve, and a supporting movable assembly is arranged at the bottom of the supporting plate. According to the stable muscle syringe needle limiting mechanism, medical staff are allowed to adjust and lock the insertion depth of the syringe needle, the accuracy and safety of injection are improved, the stable muscle syringe needle limiting mechanism can adapt to syringe needles of different lengths, the supporting stability of the syringe needle limiting mechanism is improved, use convenience is improved, and the stable muscle syringe needle limiting mechanism is worthy of popularization and application. And the use of a user is facilitated.

The utility model relates to a common oral syringe needle adapter, which aims to solve the technical problem that different syringes and syringe needles cannot be universally used at present, and comprises an adapter body, a first adapter mechanism and a second adapter mechanism, the first switching mechanism is used for switching a clamping type injection needle, the first switching mechanism comprises a medicine guide groove and an external thread, the medicine guide groove is formed in the middle of the adapter body in a penetrating mode, the inner diameter of the medicine guide groove is sequentially reduced from the bottom to the head, injector ports with different outer diameters can be connected, and through the external thread on the outer side of the head of the adapter body, the clamping type injection needle can be connected. On one hand, a clamping type injection needle can be connected, and on the other hand, the connector can be connected with internal threads on the inner wall of the connecting sleeve and can be connected with a common injection needle.

The invention provides a medical syringe needle separating device, and relates to the technical field of syringe needles. The device comprises a clamping mechanism, the clamping mechanism comprises a rotatable rotating disc, a plurality of barrel grooves are formed in the edge of the rotating disc, a clamping assembly is arranged on the rotating disc on the lower portions of the barrel grooves, a cutting mechanism conducts needle cutting on an injector clamped by the clamping mechanism, the cutting mechanism comprises a stand column, a fixed blade is arranged on the stand column, and a movable blade is arranged on the stand column in a sliding mode. The cylinder groove is matched with an injector cylinder in shape, the clamping assembly clamps or loosens an injector in the cylinder groove, the blade point of the fixed blade and the blade point of the movable blade are oppositely arranged, and a driving source for driving the movable blade to slide in a reciprocating mode is arranged on the side portion of the movable blade. And the syringe needle in the cylinder groove passes through the position between the blade points of the fixed blade and the movable blade along with the moving track of the turntable. The syringe needle is cut off to achieve needle separation, manual operation is not needed, and personnel infection is avoided.

Provided herein is a needle shield for use with a syringe comprising a needle and a barrel. The needle shield includes an elastomeric skin layer configured to receive the needle therein and maintain tightness between the needle shield and the needle when the needle shield is positioned on the syringe, and a rigid core embedded within the elastomeric skin layer.

The invention discloses a method for preparing agarose-cellulose-polyurea composite aerogel fiber, which relates to the field of aerogel materials. The method comprises the following steps: connecting a polyfluoroethylene hose to a syringe needle to enable an agarose-cellulose spinning solution to gel into a fiber shape in a coagulation bath due to its self-gelling property; controlling the gelation rate by adjusting the temperature of the coagulation bath, thereby preparing continuous agarose-cellulose composite fibers; reacting the agarose-cellulose composite fibers with components A and B of a synthetic polyurea to in-situ composite the agarose-cellulose composite fibers with polyurea; and finally drying the fibers with supercritical carbon dioxide to obtain agarose-cellulose-polyurea composite aerogel fibers having hydrophobicity and flexibility.

The invention discloses a method suitable for manufacturing a microbial specimen by sealing UV glue, and belongs to the technical field of microbial specimen manufacturing, microorganisms are inoculated to a plate culture medium for culture, then a cultured microbial plate is sterilized and dried, the preheated UV glue is poured into the dried microbial plate, and the microbial specimen is obtained. And carrying out auxiliary defoaming by using a hot air gun or a syringe needle or a vacuum pump, and finally, irradiating for 5 minutes or 8 minutes by using a 36W ultraviolet lamp, so as to obtain the microbial specimen. The method is mainly used for keeping morphological characteristics such as bacterial colony shape and color of microorganisms to the greatest extent after a series of specimen manufacturing process steps are carried out on a cultured microorganism plate with relatively obvious bacterial colony morphological characteristics, the processing steps are simple, convenient and safe, the prepared specimen is stable, and the method is suitable for large-scale popularization and application. The exhibition period is longer, and the exhibition effect is better.

The invention relates to the technical field of medical equipment, in particular to an oral mucosa disease local sealing treatment device which comprises an injector, a needle head, a limiter and a negative pressure control unit, the needle head comprises a needle seat and a curved needle, the curved needle is arranged on the needle seat, and the needle seat is used for being connected with an injection head of the injector. The limiter comprises a flexible cannula assembly, a cannula control assembly, a protective cover assembly and an elastic piece, the flexible cannula assembly is connected to the curved needle in a sleeving mode, the negative pressure control unit adopts a negative pressure injection mode, when mucous membranes are sucked up, signal transmission of local peripheral nerves can be temporarily blocked, and therefore the pain caused by needle head puncture is reduced, and the safety of the mucous membranes is improved. When positions such as gingiva which cannot be sucked up are injected, the protective cover assembly is pushed upwards, the protective cover assembly exposes the needle head, at the moment, piercing injection is directly carried out, when oral mucosa which can be sucked up is injected, the needle head part is covered by the protective cover assembly, the needle head cannot scratch a patient, the safety is good, the pain feeling is small, and the injection depth can be controlled.

The utility model provides a grinding device for syringe needles, and belongs to the technical field of grinding of syringe needles. Comprising a base, a grinding part and two clamping parts are arranged at the top of the base, each clamping part comprises an obliquely-arranged lower clamping plate, limiting rods are arranged at the four corners of the top of each lower clamping plate, and a supporting plate parallel to the lower clamping plates is arranged between the tops of the limiting rods; a blowing assembly is arranged at the top of the supporting plate and comprises an air spraying head and a draught fan used for supplying air to the air spraying head. When a needle head clamped on the clamping part on one side is ground, a worker can disassemble and assemble the needle head on the clamping part on the other side, so that the working efficiency is effectively improved; the syringe needle is obliquely clamped between the upper clamping plate and the lower clamping plate, cutting fluid obliquely flows downwards when sprayed to the needle point of the syringe needle, a large amount of cutting fluid is effectively prevented from flowing into the needle point of the syringe needle, the fan is started to enable air to be sprayed to the needle point of the syringe needle from the air spraying head, the polished syringe needle can be quickly air-dried, and time is saved.

The utility model relates to a kind of cleaning structure for syringe needle processing, belong to syringe needle processing technical field.It includes cleaning tank, the ultrasonic cleaner is equipped in cleaning tank two sides, motor is equipped in cleaning tank side, rotatingly connected with the storage bin in cleaning tank by the rotating mechanism of both sides setting, the output shaft of motor is fixedly connected with a rotating mechanism and penetrates cleaning tank, the water inlet hole of several even arrangements is penetrated in the lower end of storage bin, storage bin is equipped with placing plate, several placing grooves are evenly arranged on placing plate, adjusting mechanism is fixedly connected on the side of placing groove, limiting screen is fixedly connected in the lower end of adjusting mechanism.It is rotated to the storage bin in cleaning tank by setting rotating mechanism, the position of storage bin is adjusted during cleaning, and cooperate limiting screen to limit needle in placing groove, needle is continuously vibrated in placing groove, so that cleaning fluid and needle can be fully contacted.

The invention belongs to the field of biotechnology research, and describes a method for monitoring tomato fusarium wilt and early prevention and treatment of diseases based on minimally invasive tissue sampling. The method comprises the following steps: puncturing a tomato stem base through a sterile syringe needle to obtain trace vascular bundle tissues, and performing rapid nucleic acid extraction; then, whether the plant is infected or not is judged 5-7 days before typical symptoms appear through an isothermal amplification nucleic acid detection technology, the positive detection rate of a loop-mediated nucleic acid isothermal amplification (LAMP) detection method is 47.6%, and the positive detection rate of a recombinase-mediated nucleic acid isothermal amplification (RAA) detection method is 89.71%; finally, for the detected positive plants, in the window period when disease symptoms do not appear, trifluoropyridylamine and bacillus velezensis JSBV63 are adopted for root irrigation treatment in time, the progress of plant diseases can be controlled and blocked, and the control effect can reach 90% or above after two times of pesticide application. The combination of minimally invasive sampling, isothermal nucleic acid amplification detection and medicament treatment realizes a whole set of complete fusarium wilt prevention and treatment technical process from early diagnosis of pathogen infection to disease treatment.

The present application relates to an ovulation induction self-injection device, comprising: an arm sleeve, the arm sleeve including an outer sleeve and an annular airbag surrounding the inner part of the outer sleeve, the annular airbag being connected to a control unit, and a needle insertion hole for inserting a syringe needle being formed on the side wall of the outer sleeve; an injection unit, the injection unit including a mounting rack vertically located on the side wall of the outer sleeve, a clamp for clamping a syringe barrel being provided on the mounting rack, and an injection mechanism slidably connected to the mounting rack and pushing the syringe barrel and a syringe plunger in the direction of the outer sleeve. When injecting a drug, the present application uses the injection mechanism to push the syringe barrel and the syringe plunger in the direction of the outer sleeve. After the injection mechanism inserts the syringe needle into the subcutaneous tissue, it continues to push the syringe plunger to inject the drug into the subcutaneous tissue to complete self-injection. The present application can self-position and automatically inject drugs, facilitating self-injection by patients and reducing the injection difficulty.

The utility model discloses a stomatology department reuse syringe needle separating and collecting device convenient to disinfect, which comprises a box body, a partition plate is arranged in the box body, the box body is divided into a hollow box and a needle collecting box by the partition plate, and a through hole is arranged on the partition plate to communicate the hollow box with the needle collecting box. Meanwhile, a clamping mechanism is installed on the partition plate close to one side of the hollowed-out box, the end of an injector with a needle to be separated sequentially penetrates through the clamping mechanism and a through opening in the partition plate, and the needle of the injector is clamped and fixed through the clamping mechanism. According to the device, the operation safety can be improved, the problems of sharp instrument injury and the like are avoided, people can conveniently and rapidly control the anesthesia syringe to be safely separated from the needle head part, meanwhile, the device can be repeatedly used and disinfected together with a reused syringe, and the disinfection cost is reduced.

The invention provides a blood glucose test box with a detachable sharp instrument box, and provides the following scheme aiming at the problems that according to an existing blood glucose test box, discarded syringe needles are inconvenient to independently and safely transfer, treat and disinfect, syringe needles which are not used and used are placed in a concentrated mode, cross infection is prone to occurring, and the syringe needles cannot be flexibly disassembled and carried. The blood glucose test box comprises a blood glucose test box body and a box cover rotationally connected to the top of the blood glucose test box body through a hinge, unused syringes, insulin needles and waste needle heads can be independently and separately placed, the cross infection phenomenon is reduced, a waste sharp instrument box can be intelligently, automatically and rapidly opened and two containing boxes can be conveniently and rapidly moved out through single drive, operation is easy, convenient and labor-saving, and the test efficiency is improved. The blood glucose test box is simple in structure and convenient to use, waste needles can be automatically disinfected and sterilized when the shielding is closed, in addition, the waste sharp instrument box can be conveniently, rapidly and independently disassembled, the waste needles do not need to be independently taken out, the mounting base and the structure on the mounting base can be conveniently, rapidly and conveniently disassembled and taken down integrally, and the effect that the blood glucose test box body can be conveniently, independently and flexibly carried and used is achieved.

The utility model discloses an anesthetic medicine proportioning device relates to anesthetic medicine proportioning field, including mixed cup, the inside sliding joint of mixed cup has piston head, the below of piston head is equipped with the mixed cover, the upper surface fixed connection of piston head has the connecting pipe, and the middle part of piston head is equipped with the through -hole of communication with connecting pipe. Through adjusting the vertical rod and drive mixed cover far from piston head, make mixed cover enter liquid medicine, along with control adjusting vertical rod and drive mixed cover to and fro remove, the turbulence groove on mixed cover can fully mix liquid medicine, then lift adjusting vertical rod and make mixed cover close piston head be in the first state, after the syringe needle is stuck into the plug, can take out the mixed liquid medicine completely, until mixed cover and mixed cup bottom surface close, can fully mix liquid medicine fast, also avoided liquid medicine in the container wall, residue, improved practicality and use effect.

The present invention discloses a tendon suturing auxiliary device, which belongs to the field of medical devices and includes: a surrounding structure, which is provided with a fitting channel, the patient's arm is fitted into the fitting channel, the surrounding structure has relative execution ends, and the execution ends form an operation area, and the operation area exposes the wound on the patient's skin surface; a traction structure, which includes a traction member and a clamping member, the ends of the traction member are respectively connected to the clamping member and the surrounding structure, and the clamping member always has a tendency to move to an initial position under the drive of the traction member; a positioning structure, which includes a positioning needle and a reset member, the surrounding structure has a positioning channel, and the positioning needle always has a tendency to move to a penetration position under the drive of the reset member, and when the positioning needle moves to the penetration position, it contacts the execution ends on both sides. Through the above-mentioned settings, the present invention can solve the problem of the risk of puncture when using a syringe needle to puncture the tendon, and the problem of unstable traction effect of hemostatic forceps clamping the wound edge.

The utility model belongs to the technical field of medical instruments, and particularly relates to a diameter-adjustable fiber bronchoscope airway surface anesthesia tube which comprises a flexible plate, a locking block and an adapter, a through hole is formed in the position, close to the bottom, of the flexible plate, and the flexible plate can be wound in the radial direction to form a diameter-adjustable catheter. The catheter with the adjusted diameter can be inserted into the biopsy channel and shaped through the inner wall of the biopsy channel, the catheter is positioned when the catheter goes deep into the biopsy channel and the locking block makes contact with the biopsy channel, the adapter is connected with the top end of the catheter in an interference fit mode, and the adapter is used for being connected with a syringe needle to inject anesthetics. Therefore, according to the airway surface anesthesia tube with the structure, the traditional catheter structure with a fixed tube diameter is abandoned, the airway surface anesthesia tube is formed by winding the flexible plate, and the biopsy channel on the fiber bronchus is shaped, so that the suitability and the efficiency of the catheter in use are improved, and the defects in the prior art are overcome.

The utility model discloses an anti-puncture structure of an infusion bag, which comprises a two-way tube, the two-way tube is arranged at an opening of the infusion bag, one end of the two-way tube outside the infusion bag body is an outer end, the outer end of the two-way tube is provided with a medicine injection head, a rubber plug is arranged in the medicine injection head, one end of the two-way tube inside the infusion bag body is an inner end, and a protective cover is arranged at the inner end of the two-way tube. The protective cover is provided with a cover opening, the medicine injection head is communicated with the infusion bag cavity through the cover opening, and the two-way pipe, the medicine injection head and the protective cover are all made of hard materials. When an intravenous injection medicament is prepared, a nurse pricks a syringe needle into the rubber plug, and the protective cover can prevent the syringe needle from being in contact with the infusion bag body, so that the bag body is prevented from being pricked by the syringe needle to cause liquid medicine waste, the medicament preparation success rate is improved, and a green nurse is easy to operate.

Provided herein is a needle shield for use with a syringe comprising a needle and a barrel. The needle shield includes a rigid outer casing forming at least a portion of an outer surface of the needle shield and a compliant inner casing positioned within the rigid outer casing and formed of an elastomeric material, the compliant inner casing having a closed distal end and an open proximal end and defining a cavity therein. The hollow cavity comprises a needle storage portion within which the needle is positioned, with the needle positioned within the needle storage portion such that a sharpened tip of the needle is not embedded in the compliant inner casing and such that the compliant inner casing presses against a circumferential sidewall of the needle, to form a seal between the compliant inner casing and the circumferential sidewall along a portion of a length thereof.

1. The name of the product of this design: Multifunctional medical sharps box. 2. Purpose of the product with this design: It is used by clinical medical staff to collect or contain sharp objects in medical waste such as various syringe needles, insulin needles, infusion needles, intravenous needles, suture needles, blades, metal fragments, glass fragments, etc. 3. The design highlights of this appearance design product are: stereogram 1 and stereogram 2. 4. The picture or photo that best illustrates the design points: Stereoscopic diagram 1. 5. This design product is made of transparent material. 6. The bottom surface is shown in the stereogram 2, and the bottom view is omitted.

The invention relates to the technical field of adhesives, and discloses an ultraviolet curing adhesive system for gluing syringe needles and a preparation method and application of the ultraviolet curing adhesive system for gluing syringe needles, and the adhesive system comprises the following components which are lucifugal and independently preserved: 60-80 parts by weight of an acrylate functional monomer; 1-5 parts by weight of a photoinitiator; the prepolymer comprises 45-55 parts by weight of epoxy resin, 15-25 parts by weight of acrylic acid or methacrylic acid and 35-45 parts by weight of triphenylphosphine, wherein the epoxy resin, the acrylic acid or methacrylic acid and the triphenylphosphine are kept away from light and are respectively and independently stored; and 1-5 parts by weight of other functional auxiliary agents. The ultraviolet curing adhesive system has the characteristics of strong bonding force, fast curing and excellent mechanical properties.

A medical syringe needle cover arrangement comprises a safety device (8, fig. 1) having a needle shield 19 pivotally mounted on a carrier 18 securable to the syringe or its needle hub. The sterile nee

The utility model discloses an automatic liquid medicine extracting device which comprises a containing box, a supporting plate is fixedly connected to one side of the inner wall of the containing box, a medicine containing box is arranged at the top of the supporting plate, a rotating component is arranged in an inner cavity of the medicine containing box, a supporting sleeve is arranged on the other side of the inner wall of the containing box, and a guide sleeve is arranged at one end of the supporting sleeve. A fixing component is arranged in the guide sleeve, a driving component is arranged in an inner cavity of the supporting sleeve and comprises a first motor and a second motor, and a movable hole is formed in the side of the medicine containing box. The driving component in the supporting sleeve is used for driving the fixing component in the inner cavity of the guide sleeve to insert a syringe needle into a medicine bottle fixed in the rotating component through the movable hole in the side of the medicine placing box, so that liquid medicine is automatically extracted from the medicine bottle, and when large-batch liquid medicine extraction is carried out, compared with manual insertion liquid medicine extraction, the liquid medicine extraction efficiency is greatly improved. According to the liquid medicine extracting device, the extracting time of large-batch liquid medicine is shortened.

The utility model relates to the technical field of medical instruments, in particular to an anti-stabbing sharp instrument box which comprises a box body used for recycling sharp articles, and a needle removing mechanism used for pulling out a syringe needle is arranged on the box body. The two turning plates are pushed to drive the connecting base and the needle removing frame to be close to each other, so that the two tough plates push the needle removing base to extrude the needle head and enable the needle head to move downwards, the needle head penetrating through a human body is pulled out immediately, downward collision at the moment when the needle head is pulled out can be avoided in the process, and the needle head is prevented from being damaged. When the infusion needle which is not completely fed into the cylinder body is treated, the rotating seat is rotated to drive the shifting rod to rotate, the needle at the front end of an infusion tube is rolled into the cylinder body from the notch, and therefore the infusion needle is prevented from being rebounded out to accidentally injure medical staff, and meanwhile, the situation that residual medicine in the needle is splashed out to cause pollution is avoided. Medical staff are prevented from directly contacting the needle head, and the risk of being punctured is reduced.

The invention relates to the field of biology and basic medicine, in particular to animal experiments. The invention discloses a handheld rat and mouse cardiac impulse detector which is used for assisting in detecting rat and mouse cardiac impulse in the rat and mouse heart blood sampling process and accurately determining the blood sampling position by fixing the depth of a syringe penetrating into the heart. The instrument comprises a miniature cardiac pulse detector, a cardiac pulse signal and electric signal conversion module, an electronic display screen with a small hole in the middle, a handle, a switch and a USB interface. The instrument can detect heart beat signals of rats and mice in real time, convert the signals into electric signals and finally display the electric signals on the electronic display screen in a contour line form. An operator can determine the area with the strongest cardiac pulsation according to the depth of the color, the small hole in the instrument is moved to the area, and a syringe needle penetrates through the hole and pierces the heart of a rat or a mouse for blood collection. Compared with a traditional heart blood sampling method, under the assistance of the instrument, the consistency of blood sampling positions and the blood sampling success rate can be guaranteed, and follow-up experiment variables are reduced.

The present invention discloses a microsurgical instrument for the arachnoid of experimental monkeys, namely, a microsurgical dissector for the arachnoid of experimental monkeys, which is characterized in that: it includes a handheld body part, a telescopic screw rod and a syringe needle. The handheld body part has a cavity inside it, an anti-slip groove on its outer surface, and through holes for the telescopic screw rod at both ends. On the telescopic screw rod, there are a needle connection part at the top of the telescopic screw rod and a screwing handle at the tail end of the telescopic screw rod, which are convenient for connecting a known standard syringe needle and for screwing to adjust the telescopic screw rod. There are also a front fixing nut and a rear fixing nut for the telescopic screw rod that are fixed in cooperation with the telescopic screw rod. The needle body part uses a known standard syringe needle. The advantage is that by adjusting the telescopic screw rod, the working distance of the syringe needle can be telescopically adjusted as needed, which is suitable for the flexible application of microsurgical dissection of the arachnoid of experimental monkeys, will not block the surgical field of view under the microscope, and can be used stably and comfortably.

The anti-embolism double-channel injector comprises a needle cylinder, a needle head, a piston and a puncture needle, a transverse partition plate is arranged in the needle cylinder, and the interior of the needle cylinder is divided into an upper injection cavity and a lower blood return cavity by the transverse partition plate; the needle is arranged at the tail end of the needle cylinder, the upper portion of the needle penetrates through the transverse partition plate, a longitudinal partition plate is arranged in the needle and divides the interior of the needle into an injection channel and a blood return channel, the injection channel is communicated with the injection cavity, and the blood return channel is communicated with the blood return cavity; the end surface of the tail end of the needle head is a plane; the piston is movably arranged at one end of the injection cavity; a needle body of the puncture needle penetrates through the piston and the injection channel, and a needle tip of the puncture needle extends out of a needle head; whether the needle is inserted into a blood vessel or not is judged by observing the blood return condition in the blood return cavity, so that complications caused by the fact that medicine is injected into the blood vessel are avoided; meanwhile, the tail end of the needle is arranged to be a plane, and the problem that medicine is injected into a non-target area due to the fact that an existing syringe needle punctures an inclined plane in a straddling mode is solved.

Disclosed herein are methods of delivering implants to a target organ with an implant administration device, where the implant administration device includes a polymer retainer. Methods of making polymer retainers and methods of securing an implant within an implant administration device using a polymer retainer are also disclosed herein.

The utility model provides a drainage tube device for preventing blood clots from blocking a tube. The drainage tube device comprises a drainage tube, the device further comprises a pipe connecting piece arranged at the liquid inlet end of the drainage pipe, the pipe connecting piece comprises a connecting pipe and a dredging pipe which are integrally formed, the connecting pipe is fixedly installed on the outer wall face of the drainage pipe in a shape-following mode, the interior of the dredging pipe is communicated with the drainage pipe, and an end cover arranged at the pipe end of the dredging pipe is provided with an inserting hole for a syringe needle to be inserted into. And an attached film for plugging the jack is detachably adhered to the end surface of the end cover. The tube connecting piece is arranged at the liquid inlet end of the drainage tube, when the drainage tube is blocked by blood clots, the attached film is torn down, the syringe needle is inserted into the insertion hole, or the syringe needle can be directly used for breaking the attached film and inserting the attached film into the insertion hole, and air or anticoagulant for dredging the blood clots is injected into the drainage tube; the problem that the drainage tube is blocked can be effectively solved, the drainage tube does not need to be replaced, and the drainage tube has the advantages of simple structure and convenience in operation.