48 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.

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. 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 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 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.

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.

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 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 invention discloses a disposable skin-breaking guiding needle. The disposable skin-breaking guiding needle comprises a needle tube, a needle seat and a protecting cover, wherein the needle tube consists of a needle tube tail section, a needle tube middle section and a needle tube cutting edge which sequentially communicate with one another from front to back; a needle tube groove is formed inthe needle tube and is formed from the needle tube cutting edge to the front end surface of the needle tube middle section or the needle tube tail section; the needle seat comprises a left side wing,a V-shaped central section and a right side wing which are sequentially connected from left to right; the front parts of the needle tube tail section and needle tube middle section of the needle tubeare embedded into a needle tube clamping groove of the V-shaped central section, and the needle tube tail section of the needle tube is inserted into a needle tube insertion hole; and a V-shaped tip is clamped into the protecting cover. By virtue of the disposable skin-breaking guiding needle, an operator can conveniently, rapidly and precisely puncture a needling point through a blunt needle, andthe needle seat is convenient to fetch and place, so that the occurring frequencies of slippage, pollution of the needle tube and puncture failure can be greatly reduced, injection of the blunt needle is more comfortable and safe.

The invention discloses an improving method for preparing a mouse silicosis model. The improving method includes following steps: step 1, pretreating a mouse, separating jugular anterior fascicles, and exposing trachea; step 2, using smooth forceps to slightly pull the tongue of the mouse out of the mouth, and inserting a 20g blunt needle head into the trachea by about 2-3cm through the front wallof oropharynx under direct view; step 3, using an injector to quickly inject 50microlitres of SiO2 suspension into the trachea, removing the injector, connecting the needle head with a breathing machine, and feeding air for 10-30s: step 4, when normal breathing of the mouse restores, removing the breathing machine, continuing to observe, and pulling out the needle head when breathing is normal; step 5, suturing skin, and performing subsequent nursing and observing. The method is simple and easy in operation, simulates human silicosis process at a high degree and has the advantages of low mouse death rate, high model success rate and high operability.

The invention provides a liquid layering stripping wrinkle-removing technology based on a blunt needle. The liquid layering stripping wrinkle-removing technology comprises a body, a needle base and aneedle body. The body is composed of the needle base and the needle body, and the tail end of the needle body and the needle base are fixed in a hot melting mode. A first liquid outlet hole and a second liquid outlet hole are formed at the side wall of the front side of the needle body, and the first liquid outlet hole and the second liquid outlet hole are in bilateral symmetry. The invention relates to an improvement of the liquid layering stripping wrinkle-removing technology based on the blunt needle. The needle body is provided with a plurality of dosing points, multi-point administrationis achieved, the skin activation area is increased, the blunt needle has the advantages of being smooth in liquid outlet, good in injection effect, small in puncture resistance and small in wound, andthe problems and defects that according to an existing blunt needle for liquid layering stripping wrinkle removal, only one liquid outlet hole is laterally formed in the end of the needle body, the number of administration points is small during one-time puncture, and the skin activation area is small are solved.