60results about How to "Reduce the number of punctures" patented technology

The invention provides an anastomat for gastrointestinal tract anastomosis surgery and a production method thereof. The anastomat comprises an anastomosis nail and a base and is divided into two types, namely a combined type and an independent type. The anastomat is composed of degradable materials and medical barium sulfate and can be finally disintegrated to be powder to be removed from the body after being used up. An envelope is formed on the outer surface of the anastomat through polyacrylic resin and contains medicines such as sulfonamides and quinolones antisepsis and anti-inflammation medicines and adrenobazonum, dicynone and other hemostasis medicines, and the envelope can selectively perform medicine slow release and controlled release according to different pH physiological environments of gastrointestinal tracts.

The invention relates to a bone filler conveying sleeve which comprises a conveying tube, a conveying tube handle and a sheath core. A flexible tube is arranged at a far end of the conveying tube, a rigid tube is arranged at a near end of the conveying tube, a near end of the flexible tube is fixedly connected with a far end of the rigid tube, a near end of the rigid tube is fixedly connected with the conveying tube handle, the sheath core is slidably inserted into the conveying tube, a near end of the sheath core is fixedly connected with an adjusting handle, and a far end of the sheath core is bent to form a fixed angle which is a fixed bent section of the sheath core. The far end of the conveying tube of the bone filler conveying sleeve is provided with the flexible tube, and the sheath core with the fixed angle formed at the far end is inserted into the conveying tube, so that the purpose of controlling the bending degree of the far end of the conveying tube can be achieved by controlling the relative positions of the fixed bent section of the sheath core and the flexible tube at the far end of the conveying tube, and the bone filler conveying sleeve is convenient to operate, simple in structure and low in cost.

The invention discloses a bone marrow puncture and aspiration device used for a hematopathology department. The device comprises a base plate, wherein a supporting plate is arranged at the middle partof the upper surface of the base plate, the supporting plate is in an L shape, a control switch is arranged at the middle part of the side surface of the supporting plate, the input terminal of the control switch is electrically connected with the output terminal of an external power supply, a lead screw is arranged between a horizontal plate of the supporting plate and the base plate, the outersurface of the lead screw is connected with a lead screw motor by virtue of a screw thread, the input terminal of the lead screw motor is electrically connected with the output terminal of the controlswitch, a connecting plate is arranged on the outer surface of the lead screw motor, clamping rings are arranged on the side surface of the connecting plate, quantity of the clamping rings is two, ananesthetic needle cylinder sheathes inside one clamping ring, a bone marrow needle cylinder sheathes inside the other clamping ring, a first piston is arranged inside the anesthetic needle cylinder,and a first push-and-pull rod is arranged on the upper surface of the first piston. The bone marrow puncture and aspiration device used for a hematopathology department is easy to use, and can directly carry out bone marrow aspiration after anesthesia puncture and accurately control puncture depth.

The application discloses a diagnosis and treatment integrated operation robot system and a navigation positioning method thereof. The device comprises a first acquisition module, a second acquisitionmodule, an ultrasonic support, an execution module, a display module, a control module, a mainframe module and an input module, wherein the control module is respectively connected with the first acquisition module, the second acquisition module, the execution module, the mainframe module, the display module and the input module. The first acquisition module and the second acquisition module areinstalled on the ultrasonic support, scan areas to be scanned respectively, and transmit acquired ultrasonic data to the mainframe module through the control module. The mainframe module generates anultrasonic image according to the received ultrasonic data, carries out coordinate positioning on the ultrasonic image, establishes three-dimensional model data of the scanning area, and generates a three-dimensional model image, a puncture path and a path channel. The control module controls the execution module to execute actions according to the path channel selected by the input module.

The invention discloses a tail end puncture execution device of a medical surgical robot, which integrates multiple sensors and realizes accurate measurement of puncture distance and accurate control of needle threading moment by means of laser ranging, force feedback and the like. Meanwhile, data collected by the device can assist existing navigation guiding equipment in being matched with medical imaging equipment to improve the overall puncture precision in an operation. The device can be used for diagnosing and locally treating a lesion area in a human body, the effects of fixedly installing a rigid needle type medical instrument and accurately positioning a target position are achieved, and a laser distance measuring sensor and a pressing and pulling force sensor on the tail end puncture execution device are used for accurately controlling the body surface distance, the puncture depth and the puncture barrier reaction of a puncture needle, so that the precision of targeted puncture is improved. In addition, a puncture needle clamping module is provided, disposable medical instruments can be rapidly and conveniently replaced, and the postoperative cleaning work and preparation time are greatly shortened.

The invention discloses a human-hand-imitated prostate particle implantation robot and a using method thereof, and belongs to the technical field of medical equipment. The robot solves the problems that an existing robot for conducting prostate radioactive particle implantation operation is difficult to meet the requirement for a flexible multi-posture needle inserting task, and a flexible obstacle avoiding task cannot be conducted. A single-dimensional force sensor and a displacement sensor are installed on movement mechanisms; a six-dimensional force sensor is installed between a particle implantation mechanism and the tail end of a human-hand-imitated mechanical arm, and human-hand-imitated actions are conducted through a first movement mechanism, a second movement mechanism, a third movement mechanism and a fourth movement mechanism; a puncture assembly and the fourth movement mechanism are fixedly connected through a main support; an inner needle assembly is located between the puncture assembly and the fourth movement mechanism and arranged in a sliding mode in the length direction of the main support; the rear end of a puncture needle is inserted into a particle implantation bin and is arranged opposite to the particle outlet in a particle clip; and an inner needle and the puncture needle are coaxially arranged, and in the particle implantation process, the inner needle moves towards the front end and penetrates through the puncture needle to send radioactive particles to a target position.

The invention provides a bending adjusting handle and a bending adjustable catheter with the bending adjusting handle. The bending adjustable catheter comprises a catheter body, the bending adjustinghandle and at least two traction parts, wherein at least two bending adjustable sections arranged at an interval are arranged at the remote end of the catheter body; the bending adjusting handle comprises a driving mechanism and a control mechanism connected with the driving mechanism; the remote end of each traction part is connected with one of the bending adjustable sections; and the near end of each traction part is connected with a secondary sliding part of the driving mechanism of the bending adjusting handle. By manipulating the bending adjusting handle, the bending adjustable sectionscan be simultaneously driven to be bent to form different composite bending shapes, or one bending adjustable section is separately driven to be bent to finely adjust the bending shape of the corresponding bending adjustable section, so that operations such as a left coronary artery intervention operation and a right coronary artery intervention operation with different requirements on morphologies of the remote end of the bending adjustable catheter can be performed by using one same bending adjustable catheter, and individual differences of physiological anatomical structures of lumens of different paints can be met.

The invention relates to a bone marrow aspiration extraction device with a positioning frame. The device comprises a bone marrow aspiration extraction needle and an aspiration positioning frame for auxiliary positioning in an aspiration process, A bone marrow aspiration needle includes a cylindrical housing, a aspiration needle, needle core assembly, Anesthesia needle and pulp withdrawal needle, alancet core assembly include a lancet core body and a lancet control handle, an anesthetic needle comprise an anesthetic syringe, a piston and a push-pull rod arranged in the anesthetic syringe. Thepulp extracting needle comprises a pulp extracting needle barrel, a piston arranged in the pulp extracting needle barrel and a push-pull rod; the anesthetic needle barrel and the pulp extracting needle barrel are respectively passed through the other two channels of the rotary cover; and the aspiration positioning frame comprises a rectangular frame, a positioning block, an aspiration block, a longitudinal positioning strip, a transverse positioning strip and four legs. The bone marrow aspiration needle not only can solve the problem of reducing the aspiration times, but also is provided witha positioning frame, which is convenient for medical personnel to carry out aspiration and bone marrow fluid extraction operation.

The invention discloses a color Doppler ultrasound puncture dual-guide control system for the department of orthopaedics. The color Doppler ultrasound puncture dual-guide control system comprises a control module, an input module, an output module and a power module, wherein the control module is connected with the input module, the output module and the power module respectively, and is further connected with an ultrasound module and a nerve stimulator module for the department of orthopaedics respectively, the ultrasound module is connected with an ultrasonic probe, and the nerve stimulator module for the department of orthopaedics is connected with a nerve stimulation needle for the department of orthopaedics. The invention aims at providing the color Doppler ultrasound puncture dual-guide control system for the department of orthopaedics, which is convenient to use, and capable of positioning the location and shape of the nerve plexus of the department of orthopaedics by double methods including images and physical function, and the system is mainly used for the puncture guide for the nerve block of the department of orthopaedics.

The invention discloses a color ultrasound orthopedic puncture dual-guidance control system. The main control system is respectively connected with an ultrasonic module and an orthopedic puncture device; the ultrasonic module is connected with an ultrasonic probe, and the main control system receives color ultrasound data information from the ultrasonic module and guides the control after processing. The orthopedic puncture device performs orthopedic puncture work. The present invention is a color ultrasound orthopedic puncture dual-guidance control system that is easy to use and has a reasonable structural design. The position and shape of the orthopedic puncture can be controlled by using the double-guidance method of color ultrasound images and physical functions at the same time, which can effectively perform puncture in orthopedic surgery and facilitate surgery. Instrument operation improves surgical efficiency. The present invention can also implement effective nerve block and puncture under sedation or basic anesthesia. It is suitable for patients with anatomical variation, children and patients who cannot cooperate well, improving medical level, reducing medical risks, Reduce the suffering of patients and reduce medical expenses.

The invention discloses a color ultrasound puncture dual-boot system and belongs to the technical field of medical apparatus and instruments. The color ultrasound puncture dual-boot system comprises a main control unit, wherein input equipment and output equipment are connected with the main control unit, an ultrasound module and a nerve stimulating device module are respectively connected with the main control unit, an ultrasound probe is connected with the ultrasound module, and the nerve stimulating device module is connected with a nerve stimulating needle. The invention aims to provide the color ultrasound puncture dual-boot system which is convenient to use, can locate the position and the shape of nerve plexus by means of a dual method of an image function and a physical function, and is used for puncture and guiding of nerve blocking.

The invention discloses a lateral guide opening puncturing needle, which comprises a needle tube part, wherein scales are arranged on the needle tube part; one end of the needle tube part is provided with a needle tail part; the other end of the needle tube part is a needle point part; the needle point part is a blind end; one end, near the needle point part, of the needle tube part is provided with a guide opening provided with a lateral opening; the guide opening and the blind end of the needle tube part form a guide angle alpha. By using the technical scheme, the lateral opening is formed; during the puncture diagnosis and treatment of the puncture needle, the puncture needle with the lateral opening can be rotated so that the opening points to different directions; when important organs, blood vessels, bones and the like shield on the periphery of the lesion, the shielding parts are bypassed on the basis of the main puncture passage, and the direction change puncture is realized; when the puncture needle punctures the periphery of the lesion instead of the lesion, the lesion can be punctured in a direction changing way; the material taking or medication in a tumor body in different directions can also be realized; the multi-point material taking in real sense, the multi-directional medication in the tumor body and the particle uniform planting and distribution are realized.

The invention discloses a medical puncture, dilation and implantation tool. The medical puncture, dilation and implantation tool comprises an inner puncture needle, a puncture and dilation portion, an inner puncture tube, an inner puncture tube handle, an outer dilation tube, an outer dilation tube handle and an inner puncture needle handle from inside to outside. The inner puncture needle is a long and thin needle made of a solid metal material; the puncture and dilation portion is radically separable, the inner puncture needle is capable of axially penetrating the puncture and dilation portion, one end of the puncture and dilation portion is in a shape of a hollow cylinder, and a locking part is arranged on the inner wall of the puncture and dilation portion; the inner dilation tube is radically separable, the inner puncture needle is capable of axially penetrating the inner dilation tube, a second locking part is arranged at one end of the inner dilation tube, and the outer dilation tube is arranged outside the inner dilation tube; the inner puncture needle handle is connected with the other end of the inner puncture needle. By combination of puncture, dilation and implantation, functional diversity of the tool is realized, operation procedures are simplified, operation time is shortened, puncture times can be reduced, and accordingly puncture pains are relieved for patients. In addition, proper positions are designed for line connection, simplicity in operation is achieved, and great convenience is brought to operations.

The invention discloses a visual puncture outfit capable of preventing lens pollution. The visual puncture outfit comprises a sleeve, a clamping block and a sliding block, wherein a protection tube isarranged in the sleeve in a penetrating mode, a camera is arranged in the protection tube, the camera is electrically connected with a connecting circuit, a sealing film is arranged in a connecting shell, a first arc-shaped notch is formed in the side face of the connecting shell, a second arc-shaped notch is formed in the side face of the shell, a first clamping groove is formed in the outer side of a first through opening in the right side, the first clamping groove is formed in the right side face of the shell, a second clamping groove is formed in the outer side of the first arc-shaped notch, a clamping foot is arranged in the second clamping groove, meanwhile, the clamping foot is arranged on the left side of the shell, the second through seam is formed in the sealing film, and the sliding block is arranged on the outer side face of the protection tube. According to the visual puncture outfit capable of preventing lens pollution, the protection tube is made of a transparent highpolymer material and is arranged to separate the camera from liquid in a body, so that the camera is prevented from being influenced by the liquid in the body.

The invention belongs to the technical field of medical instruments and particularly relates to a spinal bullseye positioning pathway forming device, comprising an arc support connected with a universal mechanical arm; the arc support is provided with an arc slide slot that penetrates the inner and outer surfaces of the arc support; one ends of a plurality of puncture corrective sleeves are slidably connected inside the arc slide slot, and the other ends of the puncture corrective sleeves are extended in a direction approaching the arc center of the arc slide slot; a puncture mechanism is slidably connected inside each puncture corrective sleeve. The spinal bullseye positioning pathway forming device also comprises a bullseye reference rod which may slide to approach or leave the arc center of the arc support. Through preoperative puncture approach design, the bullseye reference rod assists in intraoperative bullseye positioning, a working pathway is established precisely and stably, the working pathway can be established with better precision and higher success rate, the number of required X-ray times is decreased, X-ray radiation to surgeons and a patient is reduced, surgical time is shortened, and fewer puncture positioning and working pathway establishment complications occur.

The invention relates to an integrated structural minimally-invasive fascia closer. The integrated structural minimally-invasive fascia closer comprises a thread clamp and a puncture needle, wherein the thread clamp comprises a shell body and a pull rod arranged in the shell body, the end portion of the pull rod is fixedly connected with a thread slot fixing head, a thread fixing slot is arranged at the end portion of the thread slot fixing head, the outer wall of the shell body and the side wall of the wire slot fixing head are connected by virtue of two groups of connection outer shells in a mirror symmetry about the axis of the shell, and each connection outer shell group comprises a supporting outer shell A with the end portion being connected with the outer wall of the shell body and a supporting outer shell B with the end portion being connected with the thread slot fixing head; a constraint thread slot is arranged on the side wall, corresponding to the supporting outer shell A, of the shell body; a thread passing opening is coaxially formed in the supporting outer shell A, the puncture needle comprises a needle tube main body, a lantern ring is also arranged in the needle tube main body, the lantern ring is fixedly provided with a traction rod which is connected with the inner wall of the needle tube main body in a sliding manner, an opening is formed in the lantern ring, and two axial ends of the opening of the lantern ring are elastically closed under the extrusion of the inner wall of the needle tube main body.

The invention discloses a puncture body surface location fence and a use method thereof. The location fence comprises a fixing frame, a plurality of fence lines are arranged in the fixing frame alongthe width direction, a longitudinal location plate is arranged on wide frame edges of the fixing frame, is parallel to the fence lines and comprises a plurality of location blocks, a plurality of hollowed-out grooves are formed in the longitudinal location plate in a front and back penetrating manner and formed in the location blocks in a one-to-one corresponding manner, the hollowed-out grooves are perpendicular to the fence lines, the horizontal projections of the hollowed-out grooves are different from each other, the tops of the location blocks are provided with longitudinal markers in shapes corresponding to those of the hollowed-out grooves, and a transverse location plate is arranged on long frame edges of the fixing frame and provided with transverse markers. The use method includes the steps: (1) fixing the fixing frame to a body surface; (2) performing DSA (digital subtraction angiography) CT (computed tomography) imaging to obtain a CT image; (3) determining penetration points and the like. The puncture body surface location fence is high in accuracy and convenient to use.

The invention discloses a thyroid tumor radiofrequency ablation device based on recurrent laryngeal nerve detection. The thyroid tumor radiofrequency ablation device comprises a recurrent laryngeal nerve detecting instrument, a thyroid tumor radiofrequency ablation instrument and a detection and ablation integrated needle, wherein the recurrent laryngeal nerve detecting instrument and the thyroidtumor radiofrequency ablation instrument are both connected to the detection and ablation integrated needle, the detection and ablation integrated needle is used for recurrent laryngeal nerve detection when being independently connected with the recurrent laryngeal nerve detecting instrument and is used for ablating pathological tissues of the thyroid tumor when being independently connected withthe thyroid tumor radiofrequency ablation instrument. The thyroid tumor radiofrequency ablation device integrates recurrent laryngeal nerve detection and ablation of the pathological tissues of the thyroid tumor, enables the detection and ablation integrated needle to have a recurrent laryngeal nerve detecting function, firstly performs early warning of recurrent laryngeal nerve detection before ablation of a dangerous zone, avoids the possibility of thermal ablation injury of recurrent laryngeal nerve, accordingly improves the safety of thyroid tumor radiofrequency ablation, meanwhile can achieve two purposes through one needle, decreased puncture times and decreases traumas of patients.

The invention provides a novel peripheral vessel intervention exchange sheath. Compared with the traditional catheter sheath, a small balloon is designed at the far end of a sheath tube, the sheath tube is fixed in a punctured blood vessel after the balloon dilatation, and by adjusting the position of a catheter sheath, the lesion towards two directions, namely the near end and the far end, of the ilio-femoral artery can be simultaneously treated, therefore, the puncture times of patients is reduced, and the treatment effects are improved; compared with a two-cavity catheter sheath, the three-cavity catheter sheath provided by the invention has the advantage that one function cavity is added, and therefore, two sets of intervention medical apparatuses can be simultaneously introduced into the near end or the far end.

The invention relates to a preparation method of a drug microcarrier for acquired deafness based on a microfluidic technology, which comprises the following steps of: controlling the generation of internal and external two-phase fluid by utilizing the micro-fluidic technology; the internal and external two-phase fluid generation process comprises the following steps: S1, preparing micron-scale liquid drops capable of being used for tympanic injection by utilizing shearing force and interfacial tension between two-phase fluids which are mutually insoluble, and in-situ entrapping hearing protective drugs and an auxiliary agent for increasing the permeability of a round window membrane; and S2, solidifying the liquid drops through polymerization reaction to form the drug microcarrier. Compared with the prior art, the prepared medicine microcarrier can be used for treating acquired deafness through tympanic injection, the middle ear cavity is filled with the medicine microcarrier through tympanic injection, the medicine is slowly released through natural degradation of the microcarrier and enters the inner ear through the round window membrane, and the effect of treating acquired deafness is achieved; the drug microcarrier has the advantages of small side effect and injury, lasting effect, obvious effect, simple operation and the like.

The invention discloses a novel indwelling needle, and relates to the technical field of medical apparatus and instruments, for solving the problem that the puncture success rate is low when the indwelling needle is used. The novel indwelling needle comprises a liquid guide pipe, a puncture needle file main body and a puncture needle which are connected in sequence, wherein the puncture needle file main body comprises a puncture needle file and an indwelling needle tube arranged at the outlet of the puncture needle file, a cavity is arranged inside the puncture needle file, a flow-checking clip is arranged on the liquid guide pipe, one end of the liquid guide pipe is connected with a tee joint, the other end of the liquid guide pipe communicates with the indwelling needle tube and the cavity, one end of the puncture needle sequentially passes through the cavity and the indwelling needle tube, the puncture needle is in threaded fit with the indwelling needle tube, a rotary knob is arranged at the other end of the puncture needle, and a plugging structure is arranged inside the puncture needle file main body. The novel indwelling needle is used for intermittent or continuous infusiontreatment, and has the advantages that the puncture success rate is high, the tube closing is convenient, and automatic blood return can be realized when infusion is carried out next time.

The invention discloses an indwelling needle with an infusion channel with a variable radial size, which comprises an indwelling catheter assembly and a puncture needle assembly, and is characterizedin that the indwelling catheter assembly comprises an indwelling base and a hollow indwelling catheter arranged at a first end of the indwelling base and communicated with the indwelling base; the puncture needle assembly comprises a puncture needle body and a puncture needle base arranged at one end of the puncture needle body. The other end of the puncture needle body is a puncture end, and thepuncture end enters from the second end of the indwelling base and penetrates out from the orifice of the indwelling catheter; the first end of the indwelling base is communicated with the second endof the indwelling base; wherein the hollow part of the indwelling catheter is an infusion channel through which infusion liquid flows in the using process of the indwelling needle, and in the indwelling process, the radial size of the infusion channel can be increased. According to the indwelling needle with the infusion channel with the variable radial size, the puncture pain of a user can be reduced; in the operation process, the function of rapidly supplementing liquid can be achieved by enlarging the infusion channel.

The invention discloses a percutaneous vertebral pedicle puncture guider which comprises a first clamping block and a rotating disc. A first threaded rod is welded to the top end of the first clamping block and provided with a second clamping block an a first fixed block, the second clamping bock is located between the first fixed block and the first clamping block, the second clamping block is connected with the threaded rod in a sliding mode, the first fixed block is in thread connection with the first fixed block, a support rod is welded to the top end of the threaded rod, a connecting block is welded to the top end of the support rod, a first groove is formed in the top end of the connecting block, and a rotating block is connected into the first groove in a sliding mode. According to the percutaneous vertebral pedicle puncture guider, the angle of a puncture needle is adjusted and fixed through a ball, a rotating rod and a universal tube, the phenomenon that in an operation, the puncture direction needs to be adjusted repeatedly is reduced, a deviation appearing due to small movement in the needle insertion process is reduced, the phenomenon that complications of causing the nerve injury by inserting the needle into a vertebral canal, causing the large blood vessel injury by going through vertebral body and the like are likely to occur in the blind puncture operation is reduced, and the accuracy and safety of percutaneous vertebral pedicle puncture are improved.

The invention discloses a bone marrow collecting device. The bone marrow collecting device comprises a sleeve pipe and a needle core sleeved in the sleeve pipe, wherein an input channel used for inputting an impact liquid and an output channel used for extracting a bone marrow mixture are arranged in the needle core. The bone marrow collecting device further comprises an impact system and a collecting system, wherein the impact system comprises a storage cavity, an impact pump and an impact pipeline, wherein the impact pipeline communicates with the input channel; the impact pump is used for outputting the impact liquid in the storage cavity into the input channel; and the collecting system comprises a collecting cavity which communicates with the output channel through a pipeline. According to the bone marrow collecting device provided by the invention, a bone marrow cavity is impacted through a high-speed liquid flow of the impact system, so more bone marrow in a larger range is extracted, and the number of times of puncture is reduced.

The present invention discloses a forearm and wrist adjusting and fixing device for a radial artery puncture tube. The device comprises a half-finger glove; an arm lower cover plate is hinged to an opening in one side of the half-finger glove; an arm part upper cover plate is hinged to the top of the arm part lower cover plate; the arm part lower cover plate and the arm part upper cover plate jointly form an oval; the bottom of the arm part lower cover plate is provided with an arm fixing plate; the cross section of the arm fixing plate is C-shaped, and the bottom of the arm fixing plate is flat; an arm adjusting device is arranged between the arm fixing plate and the arm part lower cover plate; the arm adjusting device comprises a semicircular threaded sleeve; the bottom of the semicircular threaded sleeve and the arm fixing plate are fixed by welding; the interior of the arm fixing plate is in threaded connection with a steering seat; the exterior of the steering seat is rotationallysleeved with a connecting block; and a friction damp is arranged between the connecting block and the steering seat. The device has the characteristics that an experiment is simple, hemostasis is convenient and forearm and wrist postures are accurately adjusted.

The invention provides an artery puncture device, and belongs to the technical field of medical instruments. The artery puncture device comprises an artery puncture needle, the artery puncture needle comprises a needle core and a sleeve, the needle core is sleeved with the sleeve, and the artery puncture device further comprises a guide wire and an infrared pulse sensor. The strongest arterial pulse point is sensed through the infrared pulse sensor, optical signals are converted into electric signals, and the intensity of the electric signals is indicated through the assembly for indicating the intensity of the optical signals to reflect the intensity of pulses. When the arterial puncture device is used, infrared light positioning can be achieved only by connecting the magnetic sheet at the bottom of the infrared pulse sensor with the magnetic patch at the needle body part of the puncture needle. After a puncture point is determined, a needle is inserted, a guide wire is fed when blood return exists in a needle core, and whether a cannula can be inserted or not is confirmed by confirming whether the guide wire is fed smoothly or not. According to the artery puncture device, a puncture point can be accurately positioned, the cannula can be smoothly arranged, and the success rate of first puncture and the success rate of puncture of special patients can be increased.

The invention patent discloses an in vivo pus continuous negative pressure drainage device, in particular to the technical field of medical apparatus. The in vivo pus continuous negative pressure drainage device comprises a puncturing guide needle, wherein a drainage groove is formed in the puncturing guide needle; a drainage tube is arranged outside the puncturing guide needle; a plurality of drainage holes are formed in the same positions of the puncturing guide needle and the drainage tube, and are close to a puncturing part on the puncturing guide needle; a cover body covers one end away from the drainage holes, of the drainage tube, and is used for sealing the end of the drainage tube; and a negative pressure mechanism also communicates with one end close to the cover body, of the drainage tube, and can enable constant negative pressure to produce in the drainage tube. Through the adoption of the in vivo pus continuous negative pressure drainage device disclosed by the invention,the problems that in the incision and drainage of a conventional abscess surgical operation, the operation wound is large, pains generated during postoperative medicine exchanging exist, postoperativeblemish exists, and in repeated puncturing suction, drainage in batches is needed, the treatment time is long, rinsing is inconvenient, and drainage effect is poor are overcome, and the in vivo pus continuous negative pressure drainage device can be used for continuously extracting pus in the body of a patient.