58results about How to "Reduced risk of puncture" patented technology

The invention discloses a left auricle occluding device. The left auricle occluding device comprises a sealing disc and an anchoring device, both of which are connected. The position where the anchoring device is matched with a left auricle is an anchoring net of a boneless structure. The overall anchoring device is of a boneless structure and formed by weaving of hyper-elastic metal wires or memory alloy metal wires. The far end of the anchoring device is in the shape of an opening. The near end of the anchoring device is collected and connected with the sealing disc to form a conical net. The far end of the anchoring device is opened and turned up towards the near end to form the anchoring net surrounding the conical net. The anchoring net is joined with the conical net by means of a circular transition area. The left auricle occluding device has following beneficial effects: force can be uniformly distributed to be anchored in the interior of the left auricle in order to eliminate concentration of local stress and can also be repeatedly released; and an opening part of the left auricle is effectively and reliably blocked.

The invention discloses an omnibearing puncture mechanism and a medical precise puncture system. The omnibearing puncture mechanism comprises an omnibearing rotation mechanism and a puncture device, and the omnibearing rotation mechanism is used for driving the puncture device to rotate by a set angle around a fixed point in three-dimensional space, wherein the fixed point is arranged on the extension line where the puncture direction of the puncture device 30 is located, and the set angle is an arbitrary value between 0 degree and 360 degrees. The puncture device can carry out puncture at anarbitrary angle, and is better kept away from important organs, tissue and the like, and safety of patients is guaranteed.

The embodiment of the invention provides a battery diaphragm. The diaphragm comprises a polyolefin porous diaphragm base material, wherein the polyolefin porous diaphragm base material comprises polyethylene resin, the elongation of the polyolefin porous diaphragm base material in the MD direction is greater than 120%, the polyolefin porous diaphragm base material has an elongation rate of more than 120% in the TD direction, the polyolefin porous diaphragm base material has a primary heating crystallinity of less than 65% and a secondary heating crystallinity of less than 55%, which are measured by a differential scanning calorimeter, and the difference between the primary heating crystallinity and the secondary heating crystallinity is less than 12%. The battery diaphragm has the characteristics of high elongation and low hole closing temperature, and by implementing the embodiment of the invention, the diaphragm rupture risk can be reduced when a battery cell is mechanically abused,and meanwhile, diaphragm pores are closed in advance when the battery cell is thermally abused, so the safety of the battery cell is improved. The embodiment of the invention further provides a preparation method of the battery diaphragm as well as a battery and a terminal adopting the battery diaphragm.

The embodiment of the invention discloses a display panel and a display device. The display panel comprises a first substrate and a second substrate opposite to each other, and a liquid crystal layerclamped between the first substrate and the second substrate; the display panel comprises a display area and at least one non-display area; the non-display area comprises a through hole area and a sealant area surrounding the through hole area; a first blocking structure is arranged between the sealant area and the display area, and a second blocking area is arranged in the sealant area, wherein the distribution density of the first blocking structure is greater than or equal to the distribution density of the second blocking structure. The liquid crystal and the sealant are blocked through the first blocking structure, thereby preventing the liquid crystal from diffusing to the sealant area, reducing the liquid crystal puncture risk, preventing the sealant from entering the display area,and preventing the sealant from influencing the display quality of the display area; since the second blocking structure is located in the sealant area, the second blocking structure can increase theadhesive force of the sealant in the sealant area under a condition that the adhesive area is small in area, and a package effect of the sealant is enhanced.

The invention discloses an improved left auricle occluder. The improved left auricle occluder comprises a sealing disc and an anchoring device, wherein the sealing disc is connected with the anchoring device; at least two flow stopping membranes are arranged in the sealing disc; a portion, which is matched with a left auricle, of the anchoring device is an anchoring net; and the anchoring net is a boneless structure. The whole anchoring device is a boneless structure. The anchoring device is knitted by metal wires, a far end of the anchoring device is in the shape of an opening, and a near end of the anchoring device is tucked, is connected with the sealing disc and is in the shape of a conical net; the far end of the anchoring device is opened and turned up towards the near end to form the anchoring net; and the anchoring net surrounds the conical net. By the improved left auricle occluder, a left auricle opening can be occluded in a multi-layered manner, force is uniformly distributed in the left auricle during anchoring, local stress concentration is eliminated, repeated release can be implemented, and the left auricle opening can be occluded effectively and reliably.

The invention discloses a bone marrow puncture needle, which comprises a puncture needle body, a semicircular angle frame, a sleeve, a fixing plate and an auxiliary plate, wherein the puncture needle body is composed of an outer sleeve, a needle core and a needle handle; a needle core fixing clamping groove is formed in the upper part of the needle handle; a needle core handle is arranged at the top of the needle core; a needle core fixing clamping core is arranged between the needle core handle and the needle core; a dial and an arc-shaped clamping groove are arranged on the semicircular angle frame; the sleeve is sleeved with the outer pipe casing of the puncture needle body by virtue of a screw thread; the sleeve is connected to a nut by virtue of a shaft; the shaft runs through the arc-shaped clamping groove in the semicircular angle frame; the puncture needle body is connected to the semicircular angle frame by virtue of the sleeve; a puncture hole is formed in the fixing plate; and the fixing plate is movably connected to the auxiliary plate. By virtue of the semicircular angle frame, medical personnel can observe a puncture angle when carrying out puncture, so as to reduce puncture risk; by adding a scale mark on the outer pipe casing, the length of inserting needle can be accurately mastered, and force can be controlled more easily especially for patients with relatively hard or relatively loose bone, so as to avoid injury on tissues surrounding a punctured part.

The invention discloses a clothes clip comprising a first clamping part and a second clamping art. The first clamping part is formed by a first clamping head and a first pressing head; the second clamping part is formed by a second clamping head and a second pressing head; the first clamp part and the second clamp part are movably connected via an elastic clamping sheet; the elastic clamping sheet is V-shaped; and high-elasticity steel is pressed to form the elastic clamping sheet. A clamping component of the clothes clip is replaced by the elastic clamping sheet, so a contact area between the elastic clamping sheet and the two clamping parts is increased, a possibility that the clamping parts are penetrated can be greatly reduced and service life of the clothes clip can be prolonged.

The invention provides a liquid crystal box lens panel and a liquid crystal display device. The liquid crystal box lens panel comprises a first substrate, and an upper electrode is arranged on the surface of the first substrate; a second substrate is arranged relative to the first substrate; a first photo spacer is arranged between the first substrate and the second substrate to form a gap; edges of the first substrate and the second substrate are sealed to form a sealed area; the surface of the second substrate is provided with a metal trace in the sealed area, the surface of the metal trace is provided with a passivation layer with a via hole, and a transparent electrode penetrates through the via hole to be electrically connected with the metal trace; and a second photo spacer is arranged on the surface of the passivation layer and/or the surface of the upper electrode to reduce the width of a gap of the sealed area, and the gap of the sealed area is filled with a sealant. The invention has the following advantages: when a liquid crystal display panel production line is adopted to manufacture the liquid crystal box lens panel, the diameters of fiber balls are not increased; a sealant material is saved, and the discharge capability of a sealant spray nozzle of equipment is not increased; and the contact area between a liquid crystal and the sealant is reduced, and a puncture risk is reduced.

The present invention discloses a trocar-guided disposable central venous puncture needle. The trocar-guided disposable central venous puncture needle comprises a puncture needle core, a Y-shaped sleeve tube and a heparin cap, the puncture needle core is attached to the inner wall of the Y-shaped sleeve tube, the bottom end of the puncture needle core is provided with a transparent tube cavity capable of enabling blood to flow back, the bottom end of the transparent tube cavity communicates with the detachable heparin cap or a disposable injector, a guide wire channel is arranged on the side of the bottom seat of the Y-shaped sleeve tube, and the guide wire channel is connected with a guide wire booster. The present invention relates to the technical field of medical devices. The trocar-guided disposable central venous puncture needle is reasonable in design, easy in operation, high in security, greatly improves a success rate of puncture through the structure cooperation of the Y-shaped sleeve tube, avoids failure of guide wire placement due to body movement of patients and improper fixing by operators, reduces the technical difficulties of the operators, simultaneously, reduces vascular endothelial injury and direct puncture of blood vessels caused by sharp terminals of steel needles, and reduces injury and risks of patients.

The invention provides a secondary battery, which comprises an electrode assembly, a packaging bag, an electrode lead and an insulating piece, wherein the electrode assembly is accommodated in the packaging bag, the edge of the packaging bag is provided with a sealing part, and the electrode lead is connected to the electrode assembly and passes through the sealing part. The sealing part includesa main body area, a first step area and a first transition area, wherein the first step area is located on both sides of the electrode lead along the thickness direction, the main body area and the first transition area are located at the same side of the first step area along the width direction, and the first transition area is connected between the first step area and the main body area. The insulating piece separates the sealing part and the electrode lead. The insulating piece includes a first portion, and the first portion is located between the electrode lead and the first step area. The sum of the thickness of the first step area, the first portion and the electrode lead is H1, and the thickness of the main body area is H2, wherein H1>H2. The minimum distance between the electrodelead and the outer surface of the first transition area is D1, and the minimum distance between the electrode lead and the outer surface of the first step area is D2, wherein D1>=D2.

The invention discloses a CT guided percutaneous puncture body surface locator, which comprises a dual-layer fixed mount, wherein a plurality of lower layer metal location wires, which are equally spaced, are arranged on the lower layer of the dual-layer fixed mount; crawler-type fixed strips are fixedly arranged on both sides of the upper layer of the dual-layer fixed mount; upper layer metal location wires, which are identical to the lower layer metal location wires in quantity and are in correspondence to the lower layer metal location wires one by one, are arranged between the crawler-type fixed strips on two sides; sliding blocks are arranged on both the upper layer metal location wires and the lower layer metal location wires; the bottoms of the crawler-type fixed strips are of gear-shaped structures; angle regulating wheels are arranged at four ends of a mount body of the dual-layer fixed mount; a main body structure of each angle regulating wheel is a gear; and the gears can be mutually matched with continuous single toothed structures at the bottoms of the crawler-type fixed strips. The body surface locator disclosed by the invention is simple and skillful in structure, relatively simple in structural setting and easy for material preparation and manufacturing; and the body surface locator, with popularization and application, can bring about convenience to medical personnel, relieve pain of patients and reduce puncture risks.

The invention discloses an abdominal wall puncture device for a laparoscope based on photo-excitation laser detection positioning. The puncture device is characterized in that a puncture needle is arranged in a sleeve, wherein a detection unit composed of a light transmitter, a light receiver and a light baffle is arranged at the front end of the puncture needle; and a control center and an early warning signal generator are arranged at the tail part of the puncture needle, and a connection line is connected between the detection unit and the control center and the early warning signal generator. In the invention, a central controller judges whether the light intensity received by the light receiver is lower than a set threshold and starts the early warning signal generator if the light intensity is lower than the set threshold to prompt puncture success, and thus possible injuries of organs and blood vessels caused by blind puncture are avoided.

The invention discloses a cerebrovascular intervention puncture positioning device for neurointervention. The cerebrovascular intervention puncture positioning device comprises a bottom plate; an arc-shaped pillow is fixedly connected to the upper end of the bottom plate; two adjusting through holes are formed in the bottom plate in an up-down penetrating mode, and adjusting blocks are slidably connected into the two adjusting through holes; an adjusting mechanism used for adjusting the two adjusting blocks is arranged in the bottom plate; first threaded rods are arranged on the two adjusting blocks in an up-down sliding and penetrating mode; a lifting mechanism used for lifting the two first threaded rods is arranged between the two adjusting blocks; the upper ends of the two first threaded rods are fixedly connected through two arc-shaped plates; the two arc-shaped plates are sleeved with a positioning plate in a sliding mode; a moving mechanism used for moving the positioning plate is arranged outside one of the first threaded rods; and a mounting hole is formed in the lower end of the positioning plate, and the front end of the mounting hole is transparent. According to the device, the position of a puncture needle can be accurately positioned, and the risk of puncture is reduced.

The invention relates to a peripheral vein transfusion catheter, and belongs to the field of the medical technology. The peripheral vein transfusion catheter comprises a body tube, a liquid medicine transfusion and injection connector and a connecting device, wherein the body tube is connected with the liquid medicine transfusion and injection connector through the connecting device, the connecting device comprises a combined handle and an extension tube, the front end of the combined handle is connected with the body tube, the rear end of the combined handle is connected with the liquid medicine transfusion and injection connector through the extension tube, and a water-stopping clamp is arranged on the extension tube. The peripheral vein transfusion catheter can be directly used as an indwelling catheter at the basilic vein, the cephalic vein, the median cubital vein and the like, can carry out puncture under direct vision, is high in success rate, is small in trauma, enables hemostasis to be easy, reduces the infection probability, enables a patient to feel safe, and is accepted easily.

The invention discloses a soft-pack power battery aluminum-plastic film slitting device and method. The soft-pack power battery aluminum-plastic film slitting device includes slitting blades, a bladefixing fixture and a sliding rod, and the slitting blades are fixedly installed on the blade fixing fixture; and the soft-pack power battery aluminum-plastic film is characterized in that the blade fixing fixture is slidably installed on the sliding rod and slides back and forth under restraint of the sliding rod, the slitting blades are provided with arc-shaped cutting edges, and under the condition that an aluminum-plastic film is not parallel to the horizontal plane through the arc-shaped cutting edges, the arc-shaped cutting edges are at any contact point with the edge of the aluminum-plastic film and remains vertical or nearly vertical to the edge of the aluminum-plastic film. According to the soft-pack power battery aluminum-plastic film slitting device and method, in the transverseslitting direction, the single circular arc blades are arranged on the left and right parts of the aluminum-plastic film for slitting from the single side direction, metal trailing due to shear dislocation is avoided, the puncture risks of a nylon layer and a CPP heat sealing layer is lowered, the polygonal voltage of a battery is small, the risk of leakage is greatly lowered, the slitting sectionis smooth, and the phenomenon of oxidation stratification of the edge of the aluminum-plastic film can be effectively avoided.