41results about How to "Reduced puncture resistance" patented technology

The invention discloses a safe medical needle comprising a needle tubule. A second inclined plane and a first inclined plane are positioned at the front end of the needle tubule, and the axial length L1 of the first inclined plane is shorter than the axial length L2 of the second inclined plane; the length L2 of the second inclined plane is preferably 65-75% of the total length L of the two inclined planes, and a small concave arc extending backwards is positioned at an inner point of the needle on the first inclined plane, and the inner point is adjacent to the top end of the arc line. Based on the structure of the former needle, the length L2 of the second inclined plane extends towards the first inclined plane, and a small concave arc is formed on the top end of the arc line of the inner point of the needle by fine grinding, sand blasting or laser beam heat treatment, thus the resistance against insertion of the needle head is reduced, absolute safety is ensured as human organism is not affected, needle insertion is more smooth, amount of bleeding is reduced, and pains of patients can be relieved. The medical needle is a really safe medical needle and can replace all the existing medical needles used in various situations.

An aluminum alloy sheet is a sheet of a specific 3000 series aluminum alloy for can bodies formed by drawing and ironing (DI). For producing the alloy sheet, the soaking conditions and hot rolling conditions for the ingot are controlled to produce a cold-rolled sheet having a structure in which the amount of a coarse Mn-based intermetallic compound is a specific value or less and a certain average amount of Mg in solution is ensured. The can body formed therefrom by DI has excellent piercing resistance even when used in a severe environment in which the can body has a lower internal pressure.

A sewing machine needle capable of preventing stitch skipping and fabric yarn breakage, irrespective of high-speed and multifunction sewing machines and diversified materials being used. Over a predetermined length from an edge, closer to a needle point, of a needle eye toward the needle point, a blade has a straight profile extending parallel to a longitudinal axis of the needle as viewed from a side of the needle in a direction orthogonal to a direction in which the needle eye extends. Over a predetermined length from the straight profile portion toward the needle point, the profile of the blade is a flat cross-section in which the thickness thereof in the direction in which the needle eye extends is larger than the width thereof in the direction orthogonal to the direction in which the needle eye extends. In a needle point portion following the flat cross-section portion and extending to the needle point, the blade has a sectional shape of a perfect circle.

The invention discloses a radio-frequency needle which comprises a needle body, wherein an inner electrode needle capable of ablating tissue, stimulating nerves, electrifying and positioning is embedded into a hollow part in the needle body; the inner electrode needle is detachably connected with the needle body; an insulating layer for preventing current from flowing to the surrounding tissue is coated or plated on an outer surface at one end of the needle body; a conduction region for puncturing the tissue is arranged at the other end of the needle body; the conduction region has a shape of bended, flat or circular blunt end; the puncturing resistance is ultralow; the operative wound can be reduced; the pain of the patient can be relieved; the treatment time is short; the radio-frequency needle is free from anaphylactic reaction to a human body and is free from pain phenomenon and current leakage phenomenon; the bending section of the focus can be treated, so that the treatment is free from blind area; the problem that a straight needle cannot reach a barrier puncture locus in the blind area can be solved; the inner electrode needle has an ultrasonic location function; the positioning is accurate; the focus can be positioned at multiple angles; the imaging effect of the ultrasonic image in the treatment process can be enhanced; the design is novel; the radio-frequency needle is an excellent innovation scheme and has wide market prospect.

The present invention is transfusion retaining pipe or duct for transferring liquid into blood vessel, and belongs to the field of medicine equipment technology. The soft retaining pipe or duct covering the metal guide needle with wedged tip has inclined end. The soft retaining pipe or duct can meet the requirement for long time intravenous injection and several times of puncturing, and has facilitated intravenous puncture operation and minimized damage to the blood vessel. The present invention may be used widely in different types of gravitational or pressure intravenous injection and transfusion sets.

The invention discloses a thyroidectomy lacuna tractor of an oral approach endoscope. The tractor comprises a rod body and a hook connected to one end of the rod body, wherein the hook is V-shaped andis of a hollow tubular structure, the hook comprises a puncture part in a straight tube shape and a traction part, bottom ends of the puncture part and the traction part are smoothly connected through an arc connecting part, a beveling needle point is arranged at the top end of the puncture part, and the top end of the traction part is connected with the rod body; and a handle is arranged at oneend, away from the hook, of the rod body. According to the thyroidectomy lacuna tractor of the oral approach endoscope, the tube diameter of the hook is small, so that tractor punctures easily, can easily pull strap muscle, cannot shield the surgery field and has a good exposure effect.

A sewing machine needle capable of preventing stitch skipping and fabric yarn breakage, irrespective of high-speed and multifunction sewing machines and diversified materials being used. Over a predetermined length from an edge, closer to a needle point, of a needle eye toward the needle point, a blade has a straight profile extending parallel to a longitudinal axis of the needle as viewed from a side of the needle in a direction orthogonal to a direction in which the needle eye extends. Over a predetermined length from the straight profile portion toward the needle point, the profile of the blade is a flat cross-section in which the thickness thereof in the direction in which the needle eye extends is larger than the width thereof in the direction orthogonal to the direction in which the needle eye extends. In a needle point portion following the flat cross-section portion and extending to the needle point, the blade has a sectional shape of a perfect circle.

The invention discloses a disposable sterile safe injection needle which comprises a syringe needle thin tube, a first inclined surface forming a 15-degree angle with an axial surface of the thin tube and a second inclined surface forming at 18-degree angle with the axial surface of the thin tube, wherein the width between two arc top ends of a crescent-moon-shaped cross section of the first inclined surface formed on the tube wall portion is equal to the standard thickness of the tube wall, an inner blade, a left blade and a right blade of the cross section are round fillets, and no burrs exist on a plane of the cross section. The disposable sterile safe injection needle cannot pick up tissue of human bodies or bring out fractionation, cannot damage the strength of a syringe needle, is truly safe, and can be used for replacing various medical syringe needles used in various occasions.

The invention discloses a double-chamber oocyte collector, the double-chamber oocyte collector comprises a puncture needle, a handle, a flushing catheter, a locking joint, a catheter sleeve, a suctioncatheter, a silicone plug, a vacuum catheter and a conical joint, the puncture needle comprises an inner needle and an outer needle arranged coaxially from the inside to the outside, the outer needlecomprises a needle tube and a needle tip connected with the needle tube, and an ultrasonic development enhancement band group is arranged on the outer wall surface of the needle tube; the needle tubeadopts an equal-diameter needle tube; and the set of ultrasonic development enhancement bands comprises a plurality of ultrasonic development enhancement bands, and the plurality of ultrasonic development enhancement bands are sequentially distributed on the outer wall surface of the needle tube along the axial equal spacing of the needle tube. The double-chamber oocyte collector of the inventionenables the ultrasonic imaging of the puncture needle to present a light-dark alternating scale, and is easy for the operator to directly observe the needle feeding depth on the display screen of theultrasonic imaging system in real time during the operation, so that the operation is more accurate.

The invention discloses a single- chamber oocyte collector, comprising a puncture needle, a handle, a catheter sleeve, a suction catheter and a silicone plug which are connected in turn; the siliconeplug is connected with a conical joint through a vacuum catheter; a protective sleeve is sleeved on the puncture needle; the puncture needle comprises a needle tube and a needle tip connected with theneedle tube; an ultrasonic development enhancement band group is arranged on the outer wall surface of the needle tube; equal diameter needle tube is used for needle tube; the group of ultrasound development enhancement bands includes several ultrasound development enhancement bands; each ultrasound development enhancement band is constituted by a linear groove group arranged along an axial direction of the needle tube; the curve of the linear groove group is a periodically changed curve; and the outer wall surface of the needle tube is machined adopting an ultrashort pulse laser to form thelinear groove group. The single-chamber oocyte collector of the invention enables the ultrasonic imaging of the puncture needle to present a light-dark alternating scale, and is easy for the operatorto directly observe the needle feeding depth on the display screen of the ultrasonic imaging system in real time during operation, so that the operation is more accurate.

The invention provides an operation sleeve tube and an operation tool for an arthroscopy. The operation sleeve tube comprises a sleeve and a top cover, the top cover is connected to the top of the sleeve, and the operation sleeve tub further comprises a sealing assembly; the sealing assembly comprises an upper sealing ring and at least one lower sealing ring, and the upper sealing ring and the lower sealing ring are arranged between the top cover and the sleeve in sequence in a stacked mode in sequence; a first sealing membrane is arranged in the ring of the upper sealing ring, the first sealing membrane is provided with a penetrating hole, and the first sealing membrane is in a shape which is arched downwards; the ring of each lower sealing ring is internally provided with a second sealing membrane, and the second sealing membrane is in a shape which is arched downwards and is at least halved. The operation sleeve tube is capable of maintaining a sealing state in two kinds of conditions of before an operating apparatus passes and after the operating apparatus passes, and is thus good in sealing performance.

The invention relates to a cold and hot ablation device, relates to the technical field of cold and hot ablation operations, and is used for improving the operation convenience. The cold and hot ablation device comprises an ablation instrument and a transmission device, and locking of the transmission device and the ablation instrument can be achieved by rotating a quick connection interface assembly on the transmission device; on the contrary, during unlocking, the transmission device and the ablation instrument can be unlocked by reversely rotating the quick connection interface assembly, so that the combination and disassembly of the transmission device and the ablation instrument are quicker and more convenient.

The invention discloses a radio frequency needle with two active ends comprising a needle body; the hollow structure inside the needle body is arranged as a radio frequency ablation channel; a needle core which can ablating organs, stimulating nerves, electrifying and positioning; the outer surface of the top part of the needle body is provided with a first end conducting region which is connected with image technologies such as ultrasound or CT; the outer surface of the needle body bottom is provided with a second end conducting region which is used for penetrating to focus of infection and releasing current to perform radio frequency ablation or stimulation on tumor parts or nerve tissues; an insulation region is arranged between the first end conducting region and the second conducting region for preventing current flowing to peripheral tissues; the length of the first end conducting region and the length of the second end conducting region are less than that of the insulation region; the surface of the insulation region is provided with a scale identification showing the penetrating depth in focus of infection. By means of the first end conducting region, the image technologies such as ultrasound or CT can be connected to electrify and position tumor parts, and the work mode of lead connecting electrodes is replaced.

The invention relates to a myocardium ablation device capable of ablating cardiac muscle tissue point by point. The myocardium ablation device comprises a sleeve, an inner core, a fornices and a negative pressure suction pipeline. A first hollow pipeline is formed inside the sleeve, and the negative pressure suction pipeline is embedded on the side wall of the sleeve; the far side of the inner core is provided with the tip, and a liquid injection interface is arranged on the near side; the inner core is provided with a body, the body is provided with a second hollow pipeline, the body is configured to move inside the first hollow pipeline, and the second hollow pipeline is communicated with the liquid injection interface; one or more negative pressure suction cups are arranged on the innerside wall of the fornices, and the interior of the side wall is provided with a third hollow pipeline, and the third hollow pipeline is communicated with the negative pressure suction pipeline at thenear end of the fornices; the near side of the negative pressure suction pipeline is provided with a negative pressure interface for being connected with a vacuum generation device. The myocardium ablation device can be used for mapping cardiacelectrical activity.

The invention discloses a puncture needle head with edge sides. The puncture needle head comprises a positioning head, at least two double-edge sides and a guiding body, wherein the positioning head is located at the front end of the guiding body; the double-edge sides are arranged on the outer surface of the guiding body; and edge openings of the double-edge sides of the syringe needle are circular edge openings, or a part of the double-edge sides are circular edge openings, and a part of the double-edge sides are angle edge openings. The invention also discloses a visual puncture needle. Thevisual puncture needle comprises the puncture needle head. The visual puncture needle disclosed by the invention is simple in structure, convenient to use and good in sealing property; and the puncturing resistance that the puncture needle is inserted in the abdomen can be effectively reduced, damage caused by the puncturing process is reduced, the operation time can be shortened, and the operation risk can be reduced.

A pneumatic tire includes: paired bead portions respectively including annular bead cores and bead fillers disposed on an outer side in a tire radial direction of the bead cores; sidewall portions respectively extending outward in the tire radial direction from the bead portions; a tread portion connected to outer ends in the tire radial direction of the sidewall portions to form a tread; a carcass layer suspended between the bead portions; and a belt layer provided on an outer side in the tire radial direction of the carcass layer in the tread portion. The carcass layer has a first ply that continuously extends between the bead portions and that has opposite end portions and a second ply that extends from a position in contact with an inner peripheral face of an end portion, wherein the second ply has higher tensile strength than the tensile strength of the first ply.

The invention relates to the technical field of medical equipment, and provides a needle head of a guide needle. The needle head comprises an inner side cutting edge plane, wherein an outer side cutting edge plane is arranged on one side of the inner side cutting edge plane, the inner side cutting edge plane and the outer side cutting edge plane are asymmetric, and the size of the outer side cutting edge plane is smaller than that of the inner side cutting edge plane. A needle tip is designed into a spear tip shape from a current common prism shape, and cutting edge grinding lines are formed in the advancing direction of the needle. Compared with a traditional prism structure, for the needle head disclosed by the invention, puncture resistance can be effectively reduced, transverse cutting damage of a traditional needle head to tissue is eliminated, and suturing and healing of a puncture hole are facilitated. A set of grinding planes and an outer side cutting edge are additionally arranged on the outer side of the needle tip, the width of a newly-added outer side cutting edge plane grinding surface is smaller than that of the inner side cutting edge plane, and the length of the newly-added outer side cutting edge plane grinding surface is smaller than that of the inner side cutting edge plane, so that the front end of the needle tip is in a spear tip shape but asymmetric, and the overall length of the needle tip is shortened. The needle tip does not abut against the wall of a sheath, and damage to the needle tip in the storage and transportation process is basically eliminated.

The invention discloses a single-chamber variable-diameter oocyte collector, which comprises sequentially connected puncture needles, handles, catheter sleeves, suction catheters and silica gel plugs. The protective sheath, the puncture needle includes a needle tube and a needle point connected to it, and an ultrasound imaging enhancement band group is arranged on the outer wall of the needle tube; the needle tube adopts a needle tube with a thinner front section and a thicker rear section; the ultrasound imaging enhancement belt group includes several ultrasound imaging enhancement belts , a number of ultrasonic development enhancement bands are distributed on the outer wall of the needle tube at equal intervals along the axial direction of the needle tube; each of the ultrasonic development enhancement bands is composed of a linear groove set along the axial direction of the needle tube constitute. The single-chamber variable-diameter oocyte collector of the present invention makes the ultrasonic imaging of the puncture needle present alternate light and dark scales, making it easy for the operator to directly observe the needle insertion depth in real time on the display screen of the ultrasonic imaging system during the operation, making the operation more convenient. precise.

The invention provides a disposable self-adaptive puncture avulsion sheath. The sheath comprises a sheath canal, canal plugs and a canal seat, the canal seat is formed by splicing two tearable parts, and a containing cavity is formed in the canal seat; the canal plug communicated with the containing cavity is arranged on each tearable part; the upper end of the sheath canal enters the containing cavity from a lower port of the containing cavity and is fastened through the canal plugs; and the top of the canal seat is of a Luer taper structure. By adopting the structure that the sheath canal is naturally cracked, the problem that the sheath canal needs to be punctured and replaced for many times when puncture needles and ablation needles of different models are used is solved, and puncture and ablation positioning is more convenient and efficient. The canal seat is connected with a puncture needle Luer taper, so that the stress is uniform and stable in the puncture process. The tail of the sheath canal shrinks and is in smooth transition to be attached to the puncture inner needle, puncture resistance is conveniently reduced, and puncture is facilitated. A canal seat groove and a canal seat groove buckle are fastened, so that the problem of mistaken tearing is solved. The sheath canal is fixed by pressing and riveting the canal plugs and the canal seat, so that the problem that the sheath canal is not firmly fixed is solved.

The invention relates to the technical field of medical equipment, and provides a drainage guide needle. The drainage guide needle comprises a needle head, wherein the needle head is connected with a needle handle through a transition arc; the needle head comprises an inner side cutting edge plane; an outer side cutting edge plane is arranged on one side of the inner side cutting edge plane; the inner side cutting edge plane and the outer side cutting edge plane are asymmetrical; the size of the outer side cutting edge plane is smaller than that of the inner side cutting edge plane; and an operating part is arranged on the needle head. Compared with the conventional prism structure, the drainage guide needle has the advantages that the puncture resistance can be effectively reduced, transverse cutting damage of the conventional needle head to tissues is eliminated, and suturing and healing of a puncture hole are facilitated; the operating part is arranged on the needle head, namely the operating part is arranged at the position behind a needle tip, so that sticking and slipping caused by adhesion of tissue fluid to gloves are overcome after the needle penetrates through the skin of a doctor, the needle is pulled out of the tissues, and the operation is convenient; and in addition, the operating part is also arranged on the needle handle, so that forward pushing and slipping are prevented, the puncture force and accuracy are controlled, the one-time puncture success rate is increased, and tissue damage to a patient is reduced.

The invention relates to an ultrasonic guided puncture needle device. The ultrasonic guided puncture needle device comprises an outer puncture needle and an inner puncture needle, wherein the outer puncture needle is of a hollow structure, the inner puncture needle is of a solid structure, and the outer puncture needle is arranged on the inner puncture needle in a sleeving mode and can move relatively and freely; a plurality of crescent outer needle grooves protruding towards a needle tip are formed in the surface wall, corresponding to the needle tip inclined plane side, of the position, close to the needle tip, of the outer puncture needle, and the outer needle grooves are obliquely arranged in the mode of being not perpendicular to the axis of the outer puncture needle; a plurality of crescent inner needle grooves protruding towards the needle tip are formed in the surface wall, corresponding to the needle tip inclined plane side, of the position, close to the needle tip, of the inner puncture needle, and the inner needle grooves are obliquely arranged in the mode of being not perpendicular to the axis of the inner puncture needle; and when the needle tip inclined plane of the outer puncture needle is flush with the needle tip inclined plane of the inner puncture needle, the inclination direction of the outer needle grooves is opposite to that of the inner needle grooves. The ultrasonic guided puncture needle device is ingenious in structure and reasonable in design, the reflection section of the whole puncture needle device can be greatly increased, ultrasonic reflection is better facilitated, and therefore the puncture needle device can display more clearly under ultrasound.

The invention relates to the technical field of rubber composite materials, in particular to a graphene modified rubber composite material for a tire tread and a mixing method of the graphene modified rubber composite material. The graphene modified rubber material is prepared from the following raw materials: a matrix rubber material, a modified graphene material, a vulcanizing agent, a flow promoting agent and the balance of an organic solvent, the modified graphene material at least comprises the following raw materials: graphene powder, polyvinyl chloride powder, vinyl acetate, talcum powder and the balance of N, N-dimethylformamide solution and water; according to the graphene modified rubber composite material for the tire tread and the mixing method of the graphene modified rubber composite material, the added modified graphene material is physically modified by blending the graphene with the polyvinyl chloride, so that the mechanical property of the graphene material is improved, and the characteristics of the polyvinyl chloride are introduced into the matrix rubber material for blending through the graphene; the strength and the hardness of the composite material can be improved, and meanwhile, the abrasion loss and the puncture resistance of the composite material can be reduced, so that the composite material can be better applied to a tire table top.

The invention discloses a novel simple puncture outfit. The novel simple puncture outfit comprises a puncture needle and a puncture tube, a needle head of a needle bar of the puncture needle comprisesa positioning head, blade edges and a guiding body, the positioning head is located at the foremost end of the needle head, and the blade edges and the guiding body are in the length direction of theneedle bar, wherein a cutting edge of at least one of the blade edges is a round cutting edge, and the round cutting edges are less sharp than a corner cutting edge so that the size of a puncture wound can be reduced while reducing the puncture resistance, harm to a patient is reduced, and postoperative recovery is facilitated.

The invention discloses an abdominal wall suturing device. The abdominal wall suturing device comprises a needle core and a needle tube. An edge is formed at the front end of the needle tube. The front end of the needle tube is of an openable Y-shaped structure. The Y-shaped structure comprises two elastic opening and closing arms and a needle bar. The two elastic opening and closing arms are both connected with the front end of the needle bar. A needle hook is arranged at the front end of at least one elastic opening and closing arm. The needle bar penetrates the needle tube. By the adoption of the abdominal wall suturing device, use is convenient, rapid picking and fixing of sutures are facilitated, and the sutures can be fed into and dragged out of an abdominal cavity conveniently.

The invention discloses a special safety shoe for a machining workshop. The special safety shoe comprises a shoe sole, an insole, an upper and a protective sheet, wherein a groove is formed in the middle of the interior of the shoe sole, a steel sheet is fixed in the groove, a circle of positioning holes are formed in the top surface of the steel sheet in an array mode, a circle of positioning columns are arranged in the groove in an array mode, and the positioning columns are connected with the positioning holes in an inserted mode; the insole comprises a buffer bottom and a positioning bottom; the groove is sealed through using the positioning bottom; and top holes are formed in the bottom surface of the positioning bottom in an array manner. According to the special safety shoe, the overall weight of the shoe is reduced, the user does not feel tired easily when a user wears the shoe, the anti-puncture capacity is not reduced along with abrasion of the shoe sole, the service life islong, the vamp can be effectively prevented from being punctured, the foot cannot be injured and can be comprehensively protected, the reliability is high, large scrap iron can be prevented from entering the shoe to injure the foot, the safety is high, the anti-pollution capacity is high, and the use is convenient.