66 results about "Blunt needle" patented technology

When closing the sternum in cardiothoracic surgery, elderly people with a fragile sternum can experience bleeding from the suture sites because of loose knots. The knots are loose because of the danger of cutting into the sternum from the tension caused by the suture wire. In extreme cases, the sternum can be fractured. If the closure is attempted intercostally, there are internal thoracic arteries that run longitudinally underneath the sternum and they may be hurt if a sharp needle is used. Intercostal fixation on its own is inadequate, and additional wires that directly insert into the manubrium are required. Of the sternal closure wires currently available, there is discordance in the numbers provided and actually used, resulting in leftovers that need unnecessary sterilization and reuse. To solve the above problems, an intercostal specific blunt needle has been devised, and packaged together with a sharp needle that will directly insert into the sternum. The set may contain one of each needle or a required combination of both, and come in a pre-sterilized pack. The needle is blunt at the cutting edge, and has a hook, or a side hole. The opposite end has a handle attached. The needle is configured so the wire can be hooked on, or threaded through the hook and hole respectively, and the operative procedure involves lifting up the wires.

Systems, devices, and methods are presented for a prosthetic injectable intraocular lens. One or more silicone elastomeric patches located outside the optical path on the anterior side but away from the equator can be accessed by surgical needles in order to fill or adjust optically clear fluid within the lens. The fluid can be adjusted in order to set a base dioptric power of the lens and otherwise adjust a lens after its initial insertion. The elastomeric patches are sized so that they self-seal after a needle is withdrawn. A straight or stepped slit in the patch can allow a blunt needle to more easily access the interior of the lens.

The male connector of the present disclosure allows for the flow of fluids and includes a movable blunt needle having a shoulder projecting outwards from the movable blunt needle and extending proximally from the movable blunt needle. The male connector also includes an outer cylinder body formed around the movable blunt needle and disposed in coaxial alignment to the movable blunt needle and a movable blunt needle retainer which retains the movable blunt needle is movable in an axial direction and a valve which opens as a result of the movable blunt needle moving in the axial direction where the posterior end presses against the valve to open the valve. This occurs when the movable blunt needle is inserted at the destination of the connection in a status where the inlet of the flow channel side of the movable blunt needle is open and such that the shoulder presses against the destination of the connection.

Systems, devices, and methods are presented for a prosthetic injectable intraocular lens. The lenses can be made from silicone, fluorosilicone, and phenyl substituted silicone and be semipermeable to air. One or more silicone elastomeric patches located outside the optical path on the anterior side but away from the equator can be accessed by surgical needles in order to fill or adjust optically clear fluid within the lens. The fluid can be adjusted in order to set a base dioptric power of the lens and otherwise adjust a lens after its initial insertion. The elastomeric patches are sized so that they self-seal after a needle is withdrawn. A straight or stepped slit in the patch can allow a blunt needle to more easily access the interior of the lens.

A sweat collection device includes an elongate concave sweat-collecting surface at a face thereof for placement over an iontophoresis-stimulated area of a patient's skin to collect sweat and pass it through an axial bore in the concavity. A length of flexible tubing is secured to the axial bore for receiving and storing the collected sweat. A chamber may be provided for holding the tubing in flat coiled condition. Collected sweat builds up within the tubing from the axial bore. The device can include markings to indicate when a minimum amount of sweat has been collected in the tubing and can indicated a range for collected sweat that takes into account variations in the tubing. An open end of the tubing can be flared for easy insertion of a blunt needle to extract sweat or a guide passage can guide insertion of the needle into the open end of the tubing.

Systems, devices, and methods are presented for a prosthetic injectable intraocular lens. The lenses can be made from silicone, fluorosilicone, and phenyl substituted silicone and be semipermeable to air. One or more silicone elastomeric patches located outside the optical path on the anterior side but away from the equator can be accessed by surgical needles in order to fill or adjust optically clear fluid within the lens. The fluid can be adjusted in order to set a base dioptric power of the lens and otherwise adjust a lens after its initial insertion. The elastomeric patches are sized so that they self-seal after a needle is withdrawn. A straight or stepped slit in the patch can allow a blunt needle to more easily access the interior of the lens.

Systems, devices, and methods are presented for a prosthetic injectable intraocular lens. One or more silicone elastomeric patches located outside the optical path on the anterior side but away from the equator can be accessed by surgical needles in order to fill or adjust optically clear fluid within the lens. The fluid can be adjusted in order to set a base dioptric power of the lens and otherwise adjust a lens after its initial insertion. The elastomeric patches are sized so that they self-seal after a needle is withdrawn. A straight or stepped slit in the patch can allow a blunt needle to more easily access the interior of the lens.

A self-blunting needle medical device comprises a needle cannula (18) fixed to a hub (20) having a receiving structure therein such as ferrule (22) and a movable blunting member (14) movably received within the cannula (18). Ferrule (22) defines a passage (38) extending therethrough, within which both the cannula (18) and the movable member (14) can be received and which establishes a coaxial relationship between them. The ferrule (22) defines a first guide surface (40) for directing the blunting end (14a) of the movable member (14) into the central bore of the cannula (18) during assembly. A second guide surface (42) performs the function of guiding the mounting end (18b) of the cannula (18) into ferrule (22) for mounting therein. Typically, the cannula (18) has a tissue puncture tip (18a). When the movable member (14) is retracted into the cannula (18), the puncture tip (18a) is exposed for use, e.g., injection into tissue. The movable member (14) is then moved to an extended position in which blunting end (14a) projects beyond the puncture tip (18a), to render the device safe with regard to subsequent accidental needle sticks. Methods of assembling the self-blunting needle are also presented. In various embodiments, the guide member may be integral with the assembled device or may be defined by a guide member that is used only in the assembly process and from which the assembled device may be removed.

Systems, devices, and methods are presented for a prosthetic injectable intraocular lens. The lenses can be made from silicone, fluorosilicone, and phenyl substituted silicone and be semipermeable to air. One or more silicone elastomeric patches located outside the optical path on the anterior side but away from the equator can be accessed by surgical needles in order to fill or adjust optically clear fluid within the lens. The fluid can be adjusted in order to set a base dioptric power of the lens and otherwise adjust a lens after its initial insertion. The elastomeric patches are sized so that they self-seal after a needle is withdrawn. A straight or stepped slit in the patch can allow a blunt needle to more easily access the interior of the lens.

The invention relates to an improved system for the treatment of incontinence. The inventive system comprises means of returning the vesical neck and the urethra to the original position thereof in a less aggressive manner, through the use of a mesh that can be positioned beneath the urethra and tautened to a desired value. Said system comprises: a mesh positioning element in the form of a tool consisting of a handle and a blunt needle, said needle having a wide through hole disposed at the distal end thereof; and a mesh element with a central urethral portion, both ends thereof terminating in filiform elements. The aforementioned mesh comprises different sets of through holes which are disposed at both ends thereof and on either side of the intermediate urethral portion.

Provided is a suturing needle, which can be reliably held by a needle holder, which can transmit a high thrust, and which can reduce the fear of damaging a patient and the deformation when a strong force acts. The suturing needle has a representative constitution including a needle tip portion (1) having a needle tip (1a) for piercing the tissues, a tapered portion (2) continuing to the needle tip portion (1), a trunk portion (3) continuing to the tapered portion (2), and a thread attaching portion (4) continuing to the trunk portion (3) for connecting the suturing thread. The suturing needle is characterized in that the needle tip portion (1) is formed to have a circular section continuing to the sharp needle tip (1a), an angular section continuing to the sharp needle tip (1a), a circular section continuing to the blunt needle tip (1a) or an angular section continuing to the blunt needle tip (1a), in that the tapered portion (2) is formed to become gradually thicker from the needle tip portion (1) to the trunk portion (3), in that the trunk portion (3) is formed to have a substantially triangular section, the upper face of which is formed of a wave shape having at least two ridges and the slopes of which are formed of two flat faces, in that the trunk portion (3) is also formed to have relations of R1≧R2≧R3, when a peak (5) or the joint portion between the two flat faces has a diameter of R1, when the crest of the ridges has a roundness of R2, and when a valley (7) has a roundness of R3, in that the valley (7) is formed to correspond partially to the peak (5), and in that the thickness becomes continuously larger from the tapered portion (2) to the trunk portion (3).

The invention discloses a blunt needle puncture measuring instrument. The blunt needle puncture measuring instrument comprises a base, a supporting floor stand, a supporting cross arm and a fixing disk for bearing a blunt needle, wherein the base is provided with a horizontal table board, and a bearer allowing an arm of a patient to be placed thereon is positioned and arranged on the horizontal table board; the supporting floor stand is vertically arranged in the position, close to the bearer, on the horizontal table board, and can perform reciprocating movement positioning on the horizontal table board in an X-axis direction; the supporting cross arm is transversely arranged above the bearer and can be connected to the supporting floor stand, the vertical position of the supporting cross arm can be adjusted relative to the supporting floor stand, and the supporting cross arm can rotate relative to the supporting floor stand; and the fixing disk is connected to the supporting cross arm, can perform reciprocating movement positioning on the supporting cross arm in a Y-axis direction, and can rotate relative to the supporting cross arm. The blunt needle puncture measuring instrument is not only simple,. reasonable and compact in structure, but also easy to operate, and the puncture accuracy is improved.

The invention relates to the technical field of non-woven fabrics, in particular to a preparation method of a hemostatic non-woven fabric capable of promoting healing. The preparation method comprisesthe following steps: (1) proportionally mixing 2 percent by mass of chitosan ethanol solution and 30 percent by mass of polyacrylic acid deionized water solution to obtain a chitosan-polyacrylic acidmixed solution, then adding a mixture of radix notoginseng powder, Japanese beauty-berry extract and herba cepbalanoplosis segeti extract into the mixed solution, and performing ultrasonic oscillation to form an electrospinning suspension; (2) making the electrospinning solution flow through a No. 22 blunt needle of an electrospinning device injection pump at a flow rate of 2 to 4ml / h, collectingelectrospinning fiber on a rotating circular shaft of which the rotating speed is 550 to 650r / min, removing a membrane from the circular shaft, and performing vacuum drying for 48 hours to obtain thehemostatic non-woven fabric. The preparation method of the medical non-woven fabric disclosed by the invention is simple in process, and the prepared medical non-woven fabric has a hemostatic effect,an antibacterial effect and adhesion resistance.

A device is provided to protect the hypodermic needlepoint of a syringe from being dulled as it penetrates through the stopple of a fluid vial for the purpose of filling the syringe with fluid from the vial. Specifically, the device includes a blunt needle that covers the hypodermic needle and that interacts with the syringe to establish relative friction forces between them. Importantly, this friction force is less than the friction force subsequently established between the dull needle and the stopple. Thus, after the hypodermic syringe has been filled, and is withdrawn from the fluid vial, the stronger friction force between the stopple and the dull needle causes the dull needle to remain with the stopple as the hypodermic syringe is removed from the fluid vial.

A device for occluding a blood vessel, comprises a blunt dissection needle and a first occlusion clip releasably mounted to a distal end of the blunt dissection needle, the first occlusion clip being biased to assume a clamped configuration in combination with a retaining element which, in a first configuration, retains the first occlusion clip in an insertion position against an outer surface of the blunt dissection needle and, in a second configuration, releases the first occlusion clip to assume the clamped configuration.

A sweat collection device includes an elongate concave sweat-collecting surface at a face thereof for placement over an iontophoresis-stimulated area of a patient's skin to collect sweat and pass it through an axial bore in the concavity. A length of flexible tubing is secured to the axial bore for receiving and storing the collected sweat. A chamber may be provided for holding the tubing in flat coiled condition. Collected sweat builds up within the tubing from the axial bore. The device can include markings to indicate when a minimum amount of sweat has been collected in the tubing and can indicated a range for collected sweat that takes into account variations in the tubing. An open end of the tubing can be flared for easy insertion of a blunt needle to extract sweat or a guide passage can guide insertion of the needle into the open end of the tubing.

The invention discloses an in-vitro culture method of mouse oviduct epithelial cells. A mouse oviduct is placed in a plate along with a uterine horn end, pancreatic enzyme digestive juice is injected from into the uterine horn end through a syringe with a blunt needle to be digested for 5 to 8 minutes at 37 DEG C, the uterine horn end is cut off, the oviduct is gently squeezed through ophthalmic forceps, mucosal tissue and cells which flow out are collected in a centrifuge tube to be centrifuged, supernatant is removed and a culture solution is added, the mucosal tissue and cells are inoculated into a culture bottle after blowing, beating and mixing to be cultured in an energy substance sodium pyruvate, epidermal growth factor and collagen contained culture solution, cells start to grow adhering to the wall after 18 to 24 hours, and about 80 to 90% of cells adhere to the wall after 4 to 5 days, wherein the significant promotion effect on the epithelial cell proliferation is achieved through the energy substance sodium pyruvate, cultivation microenvironment is adjusted through epidermal growth factors, and the cell adherence is facilitated through collagen.

The invention discloses an integrated separated-seamless-suspension-type loose-leaf bulk curing device, and belongs to the technical field of tobacco leaf curing devices. The integrated separated-seamless-suspension-type loose-leaf bulk curing device is used for solving the problems that an existing curing device is inconvenient to transport and store, the tobacco leaf braiding number is difficult to control, and tobacco leaves are prone to inclining. The integrated separated-seamless-suspension-type loose-leaf bulk curing device comprises a tobacco leaf curing frame and a tobacco leaf bunched suspension rod matched with the tobacco leaf curing frame in a split mode. The tobacco leaf curing frame comprises a main frame, an upper baffle frame, a left baffle frame and a right baffle frame, wherein the upper baffle frame is connected to the upper edge of the main frame through hinges, the left baffle frame is connected to the left edge of the main frame through hinges, and the right baffle frame is connected to the right edge of the main frame through hinges. Space which is h in height and is used for containing the tobacco leaf bunched suspension rod is reserved between the upper edge of the left baffle frame and the upper edge of the main frame. The tobacco leaf bunched suspension rod comprises a tobacco leaf bunched frame defined by a left transverse rod, an upper transverse rod, a right transverse rod and a lower transverse rod, wherein the upper transverse rod and the lower transverse rod are provided with upper leaf bunching needles with the upper transverse rod as a rotating shaft and lower leaf bunching needles with the lower transverse rod as a rotating shaft respectively, the upper leaf bunching needles and the lower leaf bunching needles rotate in opposite directions, and needle heads of the upper leaf bunching needles and the lower leaf bunching needles are blunt needle heads.

This patent discloses a blunt-needle buttonhole puncture painless patch that can be used for hemodialysis patients with uremic dialysis to remove scabs painlessly. scab. According to claims 1 and 2 of the claims, the non-woven painless scab-removing plaster and the film-type painless scab-removing plaster are characterized in that: 1) the non-woven fabric-type painless scab-removing plaster is divided into two layers, and the main layer is made of It is impermeable non-woven fabric; the film-type painless scab removal patch is divided into three layers, the outermost layer is a protective layer, made of transparent plastic film, 2) coated with glue around the skin, used to stick the skin and waterproof, and the middle part is no glue Disinfection and impermeable non-woven fabric or film, 3) Two kinds of plastic sheets of scab-removing plaster (can be torn off after use) closely fit scab-removing wound plaster, which can protect the stickiness of glue, 4) film-type painless scab-removing plaster is the best The upper transparent plastic film (which can be torn off after use) tightly covers the main body of the scab-removing wound dressing.

A suturing needle, comprising needle tip portion (1) having needle tip (1a), tapered portion (2) continuing to needle tip portion (1), trunk portion (3) continuing to tapered portion (2), and thread attaching portion (4) continuing to trunk portion (3); needle tip portion (1) has circular section continuing to sharp needle tip (1a), angular section continuing to sharp needle tip (1a), circular section continuing to blunt needle tip (1a) or angular section continuing to blunt needle tip (1a): wherein trunk portion (3) has the relations R1≧R2≧R3, when peak (5) or joint portion between the two flat faces has diameter R1, crest of ridges has a roundness of R2, and a valley (7) has roundness R3; and valley (7) is formed to correspond partially to peak (5), and the thickness becomes continuously larger from tapered portion (2) to trunk portion (3).

The invention discloses a method for using an angioleakage-improved bracket for hemodialysis. The usage method includes the following steps: disinfection, implantation of a venous built-in bracket, implantation of a blood vessel protection sleeve, fixation, dialysis, and maintenance of the bracket. The use method of the improved stent of the present invention separates the arteries and veins, reduces the blood shunted from the arteries to the veins, reduces the pressure of the return venous blood vessels, and effectively prevents the expansion of some blood vessel segments; The vascular protection sleeve has a tooth-shaped structure, which can directly seal the venous incision, or simply suture it, and then use the protective sleeve to seal the venous incision; reduce the complexity of the doctor's operation and save operation time; The reserved fixed puncture hole, combined with the buttonhole puncture method and blunt needle application, can easily form a puncture fistula, which can not only reduce the damage to blood vessels caused by vascular puncture, but also reduce the pain of patients and the difficulty of vascular puncture for nurses.

The invention provides a face multi-point injection medical cosmetology method, and belongs to the technical field of cosmetology and medical treatment. The method comprises the following steps: (1) uniformly stirring and mixing hydroxyapatite liquid, lidocaine liquid, sterilized water and hyaluronic acid to obtain a filling agent; (2) disinfecting blunt injection needles for beauty, and injecting the filling agent prepared in the step (1) into needle tubes; (3) selecting seven point positions, which are symmetrical to the left face and the right face, of the full face, and conducting disinfection treatment wherein the seven point positions include the eyebrow arch position, the side eyebrow position, the side cheekbone position, the piriform fossa position, the jaw position and the two point positions of the front inner side of the cheek; (4) injecting at the sites, namely the eyebrow arch position, the side eyebrow position, the side cheekbone position, and the two point positions of the front inner side of the cheek by using the blunt needle with the diameter of 25 mm, and respectively injecting under the musculus mentalis of the piriform fossa position and the jaw position by using the blunt needle with the diameter of 23mm. According to the invention, surgical skin pulling or line carving is replaced by face blunt needle injection, so that the defects of large wound surface and irreversibility of the surgery are overcome, the postoperative infection risk caused by line carving pulling is avoided, the safety coefficient is improved, and the performance is more stable.

The invention discloses an internal fistula puncture needle for hemodialysis with a function of displaying horizontal angles and an application method thereof. The needle comprises a needle head, a cannula, a sleeve, a connecting rod, a rotary handle, a catheter, a joint, a heparin cap, an angle display device and a limiting clamp. One end of the needle head is connected with the cannula. The sleeve is fixedly arranged outside the cannula. Outside of the sleeve is connected with the connecting rod. One end, departing from one end connected with the sleeve, of the connecting rod is connected with the rotary handle. One end of the catheter is connected with one end, departing from the needle head, of the cannula. The other end of the catheter is connected with the joint. One end, departing from the catheter, of the joint is connected with the heparin cap. The angle display device and the limiting clamp are movably installed on the surface outside the catheter. The puncture process is more accurate because angles of puncture each time are consistent. When a blunt needle is used for puncture in the later period, puncture angles each time are consistent. Therefore, a patient feels lesspainful. Additionally, the probability of vascular walls is decreased.

The invention discloses a blunt needle for subcutaneous injection. The top end of the blunt needle for injection is a smooth curved surface body, the part under the smooth curved surface body is of apipe body structure, through holes with elliptical outer surfaces and circular inner surfaces are formed in the pipe wall of a pipe body, and the side view of each through hole is in a dome shape; theblunt needle is made of a semi-rigid material, and any part of the pipe body can be bent to 90 degrees; the pipe wall of the pipe body is provided with the 2-4 through holes with elliptical outer surfaces and circular inner surfaces, and the 2-4 through holes with elliptical outer surfaces and circular inner surfaces are near to the top end of the blunt needle; the semi-rigid material is Japanesesteel SUS304DE, and a tapered pipe for transitional connection is arranged at the other end of the pipe body. The blunt needle for injection has the characteristics that the structure is simple, theuse is convenient, the surgical effect good, solvents and medicament can be enabled to be slowly ejected from the holes instead of being spurred out all at once without pressing and hurting nerves andblood vessels, any burden is hardly brought to human bodies, and the injection can be carried out uniformly in a large area.

The invention discloses a beauty treatment blunt needle laser welding plugging device. The beauty treatment blunt needle laser welding plugging device comprises a full-automatic rack, the full-automatic rack employs a side surface fixing and focusing mode, and the full-automatic rack is provided with a disc mold clamp, a needle tubing bunker, a laser transmitter, a conveyer belt, a molded product bunker, a fixing clamping wheel and a servo motor; the needle tubing bunker is inside provided with needle tubings with heads to be sealed; when the servo motor drives the disc mold clamp to rotate, the needle tubing bunker enables the needle tubings with heads to be sealed to fall into the disc mold clamp; the fixing clamping wheel is used for fixing the needle tubings with heads to be sealed in the disc mold clamp, when the side surface fixing and focusing system completes laser welding focusing, the laser transmitter emits a laser beam, and ports of the needle tubings with heads to be sealed are melt by means of the focus instant temperature of the laser beam end to achieve plugging of round ends; the conveyer belt is arranged under the fixing clamping wheel, the molded product bunker is arranged on one end of the conveyer belt, and the needle tubings with plugged round ends are conveyed to the molded product bunker through the conveyer belt.

The invention discloses a cosmetic injection method adopting injection pulling in front of an ear. The method comprises the following steps: cleaning the outline in front of the ear and completing a standard operation process; dividing an ear front contour by adopting a three-axis diagonal plane linear principle; preparing a composite degradable high-molecular polymer carrier; injection of a composite degradable high-molecular polymer carrier is carried out on treatment positions of the front contour of the left ear and the front contour of the right ear in a manner of obliquely cutting and inserting a needle head; when the combined type degradable high-molecular polymer carrier is injected, the combined type degradable high-molecular polymer carrier is evenly pushed into the subcutaneous tissue of the skin of the human body at each axis point of the two sides in the preset direction and by making the needle beveled at the angle of 30-40 degrees, and the needle is in a blunt needle mode. The traditional Chinese medicine composition has the beneficial effects that labial folds and puppet folds are immediately improved, the pulling effect of relaxation is changed, the composition is safe and effective, and the curative effect can be maintained for about 1 and half to 2 years.

The utility model relates to the technical field of beauty instruments, and discloses a beauty injection needle and beauty injection equipment, the beauty injection needle comprises a needle seat and a needle tube, the needle seat is made of a first material and comprises a needle seat opening; the needle tube is made of a second material and comprises a connecting section connected with the needle base and a needle tip section connected with the connecting section, the end, away from the needle base, of the needle tip section comprises a totally-closed structure, at least one injection port is formed in the side portion of the needle tip section, and the injection port is communicated with the needle base opening through the needle tube; the flexibility of the needle base is smaller than that of the needle tube. Therefore, the needle tube is soft and elastic, and the medicament outlet is formed in the side face of the needle tube instead of the tip end of a traditional sharp needle. By means of the design, the blunt needle can smoothly advance into soft tissue in the operation process, and when encountering blood vessels and nerves, the blunt needle can naturally slide away and does not pierce the blood vessels and the nerves, so that the occurrence probability of bleeding, swelling, nerve injury and other problems is greatly reduced.

The invention discloses an adipose tissue obtaining needle capable of reducing bleeding and nerve injury, which comprises a guide rod, one end of the guide rod is fixedly communicated with a negative pressure suction bottle connecting assembly, the other end of the guide rod is fixedly communicated with a needle head, and the guide rod is provided with a plurality of water drop holes close to the needle head. A user cannot be stabbed when being accidentally touched, the sharp and solid round blunt needle penetrates through a collection part to reduce the resistance of a traditional blunt end, the phenomenon that the cortex of the collection part is damaged is avoided, and the strain of the collection part is reduced; the water drop holes are formed, stress is better dispersed, the tensile strength of the guide rod during fat collection is improved, the service life is prolonged, and compared with a traditional solid guide rod and a guide rod with the water drop holes, normal use is guaranteed, meanwhile, the weight of the guide rod is reduced, and positioning and transferring are convenient; and by arranging the guide groove, the problems that the needle deviates from the fat collecting direction, fat extraction is not uniform, and even the fat extraction position deviates are solved.

The utility model discloses a peritoneal dialysis indwelling catheter fixing line guiding device, which relates to the technical field of medical instruments and comprises a handle, and the outer part of the handle is connected with a moving block in a sliding manner; a puncture needle head is slidably connected into the blunt needle head, and a threading hole is formed in the blunt needle head; one end of the bent rod needle is fixedly connected with the handle, and the other end is fixedly connected with the blunt needle head; the flexible steel cable is slidably connected into the bent rod needle, one end of the flexible steel cable is connected with the moving block, and the other end of the flexible steel cable is connected with the puncture needle head. According to the peritoneal dialysis indwelling catheter, the guide device penetrates through the abdominal wall from the inside of the abdominal cavity to guide the fixing line, the effect of reducing the wound of an opening is achieved, meanwhile, the indwelling catheter position is rapidly fixed, the problem that an existing peritoneal dialysis indwelling catheter is prone to drifting and shifting is solved, and when puncture is not carried out, the puncture needle is shrunk inside the blunt needle, so that the puncture needle is not damaged. The guide device is simple in design, convenient to operate, stable, reliable and high in practicability.

The invention discloses a blunt-end injection needle for beauty injection, which comprises a base, a cylinder is fixedly mounted on the base, a blunt needle body is fixedly mounted on the cylinder, and a mounting sleeve is sleeved on the outside of the base. A mounting hole is provided in the mounting sleeve. In the present invention, the injection end of the syringe is inserted into the inner cavity of the base, and the base is fixed on the syringe through the friction force between the injection end and the surface wall of the inner cavity of the base. Rotation, according to the principle of screw transmission, drives the rotation sleeve to move, extrudes the circular ring to move, the oblique contact block slides in the groove, drives the end of the elastic clamp block to move inward, and drives the clamp block to clamp the injection end of the syringe, which enhances the device's stability. Fixing effect, the thread has a self-locking function, which fixes the whole device on the syringe, and prevents the device from being separated from the syringe to affect the operation during the cosmetic injection process, which is convenient for the use of the device.