33results about How to "Avoid puncture risk" patented technology

The invention relates to the technical field of hanging and expanding devices for cementing of wells in oil drilling, in particular to an expansion hanger. The expansion hanger comprises an expansion pipe, a switching barrel, a single-current valve seat, a guide shoe, an expansion device, a salvageable setting device and a single-current control device, wherein the expansion device is arranged in the expansion pipe; the expansion pipe comprises a diameter expansion pipe, a frustum-shaped oblique pipe neck and a body of which the outer diameters increase in sequence from top to bottom; a vulcanized rubber ring is fixed on the upper outer wall of the diameter expansion pipe, or at least two circles of vulcanized rubber rings are fixed on the upper outer wall of the diameter expansion pipe from top to bottom; the lower end of the body is fixedly arranged together with the upper end of the switching barrel; the inner diameter of the switching barrel is the same as the inner diameter of the body; and the salvageable setting device is arranged in an inner cavity between the lower part of the body and the switching barrel. Under the condition that the drift diameter loss of a shaft of an oil-gas well, hanging and sealing are realized through expansion and cold drawing deformation of tubular products, high reliability is achieved, sealing does not fail easily, and hanging and well cementing operation of a tail pipe is completed safely and rapidly.

The invention provides an automatic positioning method and device of an indwelling needle in puncturing a vein vessel. The automatic positioning method comprises the following steps: collecting image data of a target vessel, wherein the image data contains a horizontal coordinate value of the target vessel in an image coordinate system; according to the set horizontal coordinate value and a first set step length of the horizontal coordinate value in a longitudinal coordinate direction, traversing pixels of the image data in a set window, and acquiring image characteristics of the target vessel in the image data; according to the image characteristics of the target vessel, determining a coarse detection center position of the target vessel; taking a horizontal coordinate determined according to the horizontal coordinate of the coarse detection center position as a searching point, searching longitudinal coordinate values of upper and lower vascular walls in the longitudinal coordinate value of the coarse detection center position; and according to the searched longitudinal coordinate values of the upper and lower vascular walls, determining a range where a puncture point of the target vessel is located and a depth value of the target vessel. The automatic positioning method and device can automatically position a puncture position of a puncture mechanism in the target vessel with high accuracy, lower the manpower training cost of a hospital and prevent sticking risk by artificial puncture at the same time.

The invention discloses a three-dimensional atrial septum puncture system. The three-dimensional atrial septum puncture system comprises a three-dimensional mapping and three-dimensional positioning assembly, an atrial septum puncture needle, a sheath catheter and an expanding tube, wherein the three-dimensional mapping and three-dimensional positioning assembly comprises a three-dimensional guidewire and a guide wire connecting wire, and at least two electrodes are arranged at each of the far end and the near and of the three-dimensional guide wire; the guide wire connecting wire is connected to the near end of the three-dimensional guide wire; at least two electrodes are arranged at each of the far end of the atrial septum puncture needle, the far end of the expanding tube, and the farend of the sheath catheter. For the three-dimensional atrial septum puncture system provided by the invention, under the condition that X-ray fluoroscopy / image is not used, the situation that whetherthe positions of the three-dimensional guide wire, the expanding tube, the sheath catheter and the puncture needle reach the puncture position or not can be clearly observed, accurate positioning andpuncturing are carried out, and the puncture risk caused by the fact that only the X-ray image is adopted, so that the puncture position can not be intuitively judged, is avoided.

The invention provides an adjustable cryoablation needle, comprising a shank, a front heat-insulating tube, a rear heat-insulating tube and an intake structure penetrating the shank and the front heat-insulating tube; the shank can move along the axis of the rear heat-insulating tube relative to the rear heat-insulating tube so as to adjust a first axial distance between the front end of the rear heat-insulating tube and the front end of the shank; the front heat-insulating tube can move along the axis of the rear heat-insulating tube relative to the rear heat-insulating tube so as to adjust a second axial distance between the front end of the front heat-insulating tube and the front end of the rear heat-insulating tube. The adjustable cryoablation needle helps prevent the inconveniences caused by surgeons selecting cryoablation needle types, can adapt fully to different entering depths, allows the length of the exposed shank to be as small as possible to prevent bending of the shank and prevent the injury risks, such as tear of human tissues. The adjustable cryoablation needle herein can also further meet conveniently the treatment needs of tumors of different sizes at the premise of satisfying different entering depths.

The invention provides an ultraviolet light curing mask plate and a manufacturing method and a curing method therefor. The ultraviolet light curing mask plate comprises a mask plate substrate; a blocking region and a light-transmitting region are arranged on the mask plate substrate; the blocking region is corresponding to a liquid crystal region of a liquid crystal display panel; the light-transmitting region is corresponding to a region wherein a sealant of the outer frame of the liquid crystal display panel is located; the light-transmitting region allows ultraviolet light to penetrate through; at least one light path changing apparatus is arranged in the light-transmitting region; and the light path changing apparatus can change the light path of ultraviolet light. The ultraviolet light curing mask plate has the advantages as follows: the light path changing apparatus is added to the ultraviolet light curing mask plate, so that the ultraviolet light which perpendicularly irradiates to the ultraviolet light curing mask plate can irradiate the region, covered with metal lines, of the liquid crystal display panel completely and uniformly, thereby fully curing the sealant and avoiding puncture risk.

The invention discloses an easy-to-wash movable stoma bag which comprises a bag body; a bottom plate is arranged on the inner side surface of the bag body, which is contacted with the skin of a human body; an opening for receiving a stoma hole is formed on the bottom plate; and a urine outlet is formed at the bottom end of the bag body; the easy-to-wash movable stoma bag is characterized in that a connection hole provided with a sealing cover is arranged on the outer side surface of the bag body and positioned right above the front of the opening on the bottom plate; and a detachable movable urine receiving bag is sleeved at the urine outlet. The stoma bag is easy to wash, allows excrement to be removed without dirting the hands, keeps clean and sanitary, has no bad odour or pollution, reduces infection to the skin around the stoma, and is simple and convenient in nursing.

The invention discloses a guiding wire coiled pipe device for precise positioning and guiding in the field of medical apparatuses. The device includes a shell which is of a hollow structure and is made of transparent plastic, the shell is spliced by a left half shell body and a right half shell body, and a guiding passage which is spirally distributed and used for placing guiding wires is formed in an inner cavity of the shell; a guiding wire outlet end is also formed in the shell, a roller for conveying the guiding wires is rotatably installed at the guiding wire outlet end, a pointer is arranged on one side of the roller, precise ruler scales are arranged around the pointer, and a groove for placing the guiding wires is formed in the middle of the roller; a guiding head and a guiding platform used for fixing the guiding head are fixed to the portion, in front of a conveying wheel, of the guiding wire outlet end, the guiding head and the guiding platform are provided with guiding holes running through the guiding head and the guiding platform, and the guiding wires penetrate through the guiding holes slidably. The structure is simple, and positioning of the guiding wires is precise.

The invention discloses intra-arterial medical equipment, namely a carotid artery stent system, which belongs to the field of medical apparatus and instruments. The carotid artery stent system comprises a carotid artery stent and a conveyor, wherein the carotid artery stent is implanted into a pathological blood vessel spot through the conveyor; the carotid artery stent is precompressed into an outer sheath of the conveyor, and is released to a pathological region through withdrawing the conveyor. The carotid artery stent system is characterized in that the carotid artery stent is a self-expansion laser-carved nickel-titanium superelastic alloy stent, and a stent release condition is of a mesh cylinder structure composed of multiple V unit structures, and opposite V units form a diamond mesh, and the stent of the mesh cylinder structure consists of three sections, wherein every three diamond meshes of big mesh sections at the two ends have a cross structure, and every two diamond meshes of small mesh sections in the middle have a cross structure, and the stent shrinks in a peak-to-valley manner when being bent; the top end of the conveyor is of a biconical head end shape. Compared with the prior art, the stent has the advantages of more excellent blood vessel adherence performance and flexibility, good non-deformability and good durability and the like by utilizing the design characteristics of the stent itself.

The invention relates to the technical field of medical instrument and specifically relates to a freestyle needleless precision control indwelling infusion system. The system comprises an infusion bagassembly which is composed of infusion long tubes connected in series, an infusion prolongation tube assembly and an indwelling infusion flexible tube assembly; the infusion bag assembly comprises anouter pressure box and an elastic infusion bag; the infusion prolongation tube assembly comprises an infusion prolongation tube and an accessory fine speed control valve, precision medicine tube, a positive pressure connector type needleless drug addition port and a Luer connector; the indwelling infusion flexible tube assembly comprises a positive pressure connector, a side hole steel needle, adirect current tube and an infusion hose connected to one end thereof; a side wall of the direct current tube extends slantly and is provided with an infusion branch tube; the direct current tube chamber is provided with medical silica gel pad; a stab-resistant locking assembly is installed on the side hole steel needle so that the needle tip is wrapped when the stab-resistant locking assembly getoff from the direct current tube. The invention fundamentally eliminates the risks existing in the existing infusion system, and provides the patient with a more reliable and safer infusion method, and at the same time ensures the safety of the medical staff and eliminates the risk of getting stabbed and infected.

The invention discloses a pen insulin syringe needle picking and collecting drum and its picking and collecting method. Unreasonable disposal of waste syringe can hurt others as well as pollute environment. Besides, a patient's finger is very easy to be stabbed by a syringe needle for not correctly sheathing a needle cap on the syringe needle of the pen syringe needle. The pen insulin syringe needle picking and collecting drum comprises a drum body, a clamping component, a pressing arm and a tail thread cover; the drum body is composed of a storage drum body and a rotary picking drum body which are integrally shaped; an outlet end of the inner cavity of the rotary picking drum body is connected with an inlet end of the inner cavity of the storage drum body, an outlet end of the storage drum body is in threaded connection with the tail thread cover; the outlet end of the rotary picking drum body is provided with an outside thread, a pressing arm comprises an arm rod, a holding pawl, a slide rod and an opening seal spring; the clamping component comprises a clamping nut, a slide ring, a connecting pipe and a pressing ring. The pen insulin syringe needle picking and collecting drum can intensively store the waste pen insulin syringe needle and avoid the stabbing risk caused by freely discarding the needle.

The invention discloses a coating-rolling composite waterproof system structure suitable for an underground side wall. The coating-rolling composite waterproof system structure comprises a coating waterproof layer and a rolling material waterproof layer. The coating waterproof layer is a special thick coating type water-based asphalt waterproof coating for the side wall, and the rolling material waterproof layer is a high-strength anti-puncture asphalt-based self-adhesive waterproof rolling material. According to the coating-rolling composite waterproof system structure suitable for the underground side wall, the technical advantages of the special thick coating type water-based asphalt waterproof coating for the side wall and the high-strength anti-puncture asphalt-based self-adhesive waterproof rolling material are fully exerted, the special thick coating type water-based asphalt waterproof coating for the side wall, the high-strength anti-puncture asphalt-based self-adhesive waterproof rolling material, a bottom plate and a top plate throwing-joint part are firmly bonded together, a full-interface closed waterproof structure is formed, the leakage problem caused by infirm bonding of the joint part due to the material type difference is effectively avoided, and the risk that the waterproof rolling material on the side wall slides and is punctured in the subsequent backfilling process can be avoided.

The invention relates to a needle cap suitable for a syringe and belongs to the technical field of medical instruments. The needle cap mainly includes a hollow cylindrical cap body, the top of the cap body is of a closed structure, and the bottom of the cap body is of an open structure; the side portion of the cap body is provided with a through groove, the inner wall of the cap body is fixedly connected with a sleeve pipe through a connecting plate, the top of the sleeve pipe is of a closed structure, and the bottom of the sleeve pipe is of an open structure; the side portion of the sleeve pipe is provided with a second through groove, an arc-shaped baffle used for sealing the first through groove is arranged between the sleeve pipe and the cap body, and one side of the arc-shaped baffle is fixedly connected with a straight baffle; the other side of the arc-shaped baffle is fixedly connected with one end of an elastic part, and the other end of the elastic part is fixedly connected with the connecting plate; the straight baffle protrudes out of the cap body. By designing a novel structure, the situation that medical-care personnel is stabbed in the sleeving process can be avoided, and the risk that a puncture part scratches plastic particles on the needle cap can be avoided.

The invention discloses a pulmonary nodule positioning method. The method comprises the following steps: S0, determining the position of a pulmonary nodule in a lung; s1, establishing a thoracic three-dimensional model; s2, marking a virtual puncture positioning point; s3, marking the position of the pulmonary nodule on the surface of the lung. According to the positioning method of the pulmonary nodule, accurate positioning and real-time registration are performed on the CT three-dimensional reconstruction image and the thoracoscope image by virtue of a computer-aided diagnosis technology and a computer deep learning model based on artificial intelligence, so that accurate positioning of the pulmonary nodule is realized. Meanwhile, interventional or radiative positioning steps harmful to the human body of the patient are reduced, complications after positioning can be reduced, and the positioning cost is reduced.

The invention relates to a glass curtain wall with a vacuum thermal baffle. The glass curtain wall with the vacuum thermal baffle comprises hollow glass and the vacuum thermal baffle installed in the interlayer space of the hollow glass; and the hollow glass with the vacuum thermal baffle is only installed on the area, needed for sun-shading and heat-insulating, on the support structure of the glass curtain wall, so a decorative sheet or a building wall does not need to be installed for sun-shading along the inner wall of the glass curtain wall. The indoor space is not occupied, and the heat-insulating effect is better. The hollow glass is the double-layer hollow glass, and the vacuum thermal baffle is adhered to the inner wall of the outer glass of the hollow glass, so the glass fragments are prevented from falling during the self-explosion of the outer glass, and the using safety is ensured.

The invention discloses an ostomy bag for sickbed nursing and relates to the technical field of medical apparatus. The ostomy bag comprises a bag body, a bottom plate arranged on the side surface of the bag body and an opening formed in the bottom plate, wherein a flushing fluid connecting tube equipped with an adjusting valve communicates with the upper part of the bag body, and the bottom of the bag body communicates with a negative-pressure suction tube; an adjusting valve is arranged between the negative-pressure suction tube and a connected negative-pressure source. The ostomy bag can solve the problems that the ostomy bag used by a bedridden patient after surgery in a hospital gets full easily, cannot be kept clean at any time, soils hands of medical workers and pollutes a bed sheet when urine and stool are cleaned.

Disclosed is a method and a device for automatic positioning of an indwelling needle in a punctured vein. The method comprises: collecting image data of a target blood vessel, the image data comprising a set horizontal axis value of the target blood vessel in an image coordinate system; traversing pixels of the image data in a set window according to the set horizontal axis value and a first set step length thereof in a vertical axis direction, to acquire an image feature of the target blood vessel in the image data; determining an approximate-detection center position of the target blood vessel according to the image feature of the target blood vessel; searching, by using as search points horizontal axis values determined according to a horizontal axis value of the approximate-detection center position, for vertical axis values of upper and lower blood vessel walls within vertical axis values of the approximate detection center position; and determining a range of a puncture point on the target blood vessel and a depth value of the target blood vessel according to the found vertical axis values of the upper and lower blood vessel walls. The method and the device can automatically position a puncture position of a puncture mechanism at a target blood vessel with high precision, reducing manpower training costs of hospitals and avoiding a needle-stick risk during manual puncture.

The invention discloses a syringe needle cap fixing device in the field of medical instruments. The syringe needle cap fixing device includes a fixing frame and a C-shaped bayonet arranged on the fixing frame; an annular groove is arranged at the middle of the inner side of the C-shaped bayonet; the inner diameter of the C-shaped bayonet is the same as the outer diameter of the middle and upper portions of the syringe needle cap; the opening of the C-shaped bayonet is larger than the outer diameter of the syringe needle handle; and the inner diameter of the annular groove is the same as the outer diameter of a ring of protrusion at the opening of the syringe needle cap. The beneficial effects of the syringe needle cap fixing device are as follows: the C-shaped bayonet with the annular groove is arranged, therefore, when removing the cap, the needle cap is inserted from top to bottom, the annular groove is used for locking the protrusion at the opening of the needle cap, and then the cap is removed; and when sleeve back, the syringe needle is inserted into the needle cap, and then the syringe needle is forced downward so that the needle cap is separated from the annular groove and then taken out from the opening of the C-shaped bayonet to complete the sleeve back operation; and therefore, the whole process is convenient and quick, the efficiency of medical staff to take caps andreturn caps with one hand is improved, and the risk of hands being injured by needles is effectively avoided.

The invention discloses a water receiving device and an air conditioner indoor unit with the device, and belongs to the technical field of air conditioners. The water receiving device comprises a waterproof layer, the waterproof layer is opposite to tips of evaporator fins, a strip-shaped triangular protrusion is arranged at the positions, corresponding to the tips, of the waterproof layer, and the protrusion is in face-to-face contact with the one sides of the tips to support the tips. The strip-shaped triangular protrusion is arranged at the positions, corresponding to the tips, of the waterproof layer, the protrusion is in face-to-face contact with the one sides of the tips to support the tips, the waterproof layer is prevented from being punctured by the tips, and the phenomenon that the waterproof layer is punctured, and water blowing happens to the air conditioner indoor unit is avoided.

The invention discloses a chilled fresh poultry storage and transportation freshness safety warning card which comprises a shell provided with a sealed containing space, a clamping groove is formed in the outer side of the shell, and at least part of the shell is transparent and used for observing the interior of the containing space; the rubber layer is attached and fixed to the inner wall of the shell; the ejector pin device comprises an ejector pin and a protective cover, the ejector pin is located in the clamping groove range and comprises a pin handle and a pin body, the pin body penetrates through the shell, and the end, away from the pin handle, of the pin body is completely embedded into the rubber layer; the protective cover is clamped in the clamping groove and covers the needle handle; the bacterial liquid bag comprises a sealed bag body made of a plastic material and bacterial liquid contained in the bag body, and the periphery of the bag body abuts against the rubber layer; and the filter paper adsorbs a developing enrichment liquid, and the filter paper is accommodated in the accommodating space and is clamped between the rubber layer and the bag body. Compared with the prior art, the chilled fresh poultry storage and transportation freshness safety warning card is high in yield, good in reliability and convenient to use.

The invention discloses a venous indwelling needle capable of preventing needle stick injury and a using method of the venous indwelling needle, and relates to the technical field of medical instruments. The venous indwelling needle comprises a catheter base, a needle base is clamped to the bottom end of the catheter base, a telescopic rubber tube is fixedly connected to the upper surface of the needle base, the telescopic rubber tube is located in the catheter base, and the top end of the telescopic rubber tube is fixedly connected with a needle tip protection plug. According to the venous indwelling needle capable of preventing needle stick injury and the using method of the venous indwelling needle, by arranging the needle base, the telescopic rubber tube, the needle tip protection plugand a puncture needle, when medical staff guide a catheter into a blood vessel through the puncture needle, the needle base is pulled out of the catheter base through a needle handle, the needle basedrives the puncture needle to retreat from the catheter, and due to the fact that the lengthened length of the telescopic rubber tube completely stretched is equal to the length of the portion, retreating into the needle tip protection plug, of the puncture needle, after the puncture needle is pulled out, the situation that other people are accidentally injured due to misoperation is avoided, andthe risk of stick injury caused by the puncture needle is prevented.

The invention discloses a portable chilled fresh poultry storage and transportation freshness safety warning card which comprises a shell with a sealed containing space, at least part of the shell is transparent, and the shell is used for observing the interior of the containing space; the rubber layer is attached and fixed to the inner wall of the shell; the ejector pin device comprises an ejector pin and a protection pin, the ejector pin comprises a pin handle fixed in the shell and a plurality of pin bodies, and the pin bodies penetrate through the rubber layer and extend to be exposed out of the inner side of the rubber layer; the pin body of the protection pin forms a protection groove, and the exposed part of the pin body is located in the protection groove. The bacterial liquid bag comprises a sealed bag body made of a plastic material and bacterial liquid contained in the bag body, and the periphery of the bag body abuts against the rubber layer; and the filter paper adsorbs a developing enrichment liquid, and the filter paper is accommodated in the accommodating space and is clamped between the rubber layer and the bag body. Compared with the prior art, the portable chilled fresh poultry storage and transportation freshness safety warning card is high in yield, good in reliability and convenient to use.

The invention provides a single-person bagging device. The single-person bagging device comprises a mounting frame, an opening assembly arranged on the mounting frame and a placing frame arranged below the opening assembly, wherein the opening assembly comprises two opening units which are oppositely arranged; each opening unit comprises a rotating shaft, a torsion spring and an opening piece; therotating shafts are arranged to rotate in the circumferential direction of the rotating shafts; the opening pieces are arranged on the rotating shafts; the opening pieces of the two opening units correspond to each other to jointly open an opening of a bag; and the torsion springs act on the rotating shafts so as to fix the positions of the rotating shafts in the circumferential direction of therotating shafts. According to the single-person bagging device, the bag is opened by the opening pieces of the two opening units, manual opening is not needed, bagging and wire bagging can be completed under the operation of a single person, so that manpower is saved, the utilization rate of manpower resources is improved, the risk that the bag is punctured by wires is avoided, and the safety is good.

The invention discloses an indwelling needle installing clip assembly. The indwelling needle installing clip assembly comprises a base and a door-shaped elastic piece, and the door-shaped elastic piece comprises a first side plate, a second side plate and a third side plate, wherein the first side plate and second side plate are opposite to each other, and the third side plate is used for connecting the first side plate with the second side plate; the base is provided with a locating groove for installing the door-shaped elastic piece, and the locating groove is provided with a first side wall, a second side wall and a third side which cooperate with the first side plate, the second side plate and the third side plate respectively; the first side wall and the second side wall are providedwith first needle penetrating holes for an indwelling needle to penetrate through respectively, and a second needle penetrating hole is formed in the position, corresponding to the first needle penetrating hole in the first side plate, of the first side plate; a baffle for blocking the first needle penetrating hole in the second side plate is arranged at the position, corresponding to the first needle penetrating hole, of the second side plate, and an avoidance opening is also formed in the second side plate, located at one side of the baffle, and used for the indwelling needle to penetrate through when the door-shaped elastic piece is bent to make the baffle move away from the corresponding first needle penetrating hole. According to the indwelling needle installing clip assembly, the elastic piece is fixed on the base when the indwelling needle is installed, the installation is convenient and quick, and the risk that installers are stabbed by indwelling needles can be effectively avoided.

The invention discloses a novel safety warning card for storage and transportation freshness of chilled poultry meat. The novel safety warning card comprises a shell, a rubber layer, thimbles, a bacterial liquid bag and filter paper, wherein the shell is provided with a sealed accommodating space, and at least part of the shell is transparent, so that the interior of the accommodating space can beobserved; the rubber layer is attached and fixed to the inner wall of the shell; one end of each thimble is fixed on the inner wall of the shell, and the other end of each thimble is completely embedded into the rubber layer; the bacterial liquid bag comprises a sealed bag body made of a plastic material and bacterial liquid contained in the bag body, and the periphery of the bag body abuts against the rubber layer; and the filter paper adsorbs chromogenic enrichment liquid, is accommodated in the accommodating space and is clamped between the rubber layer and the bag body. Compared with theprior art, the novel safety warning card for storage and transportation freshness of chilled poultry meat is high in yield rate, good in reliability and convenient to use.