84 results about "Venous puncture" patented technology

Provided is a pressure bandage suitable for achieving complete hemostasis at a venipuncture site. The bandage includes an adhesive backing, upon which a non-compressible, absorbent pad is centrally affixed. The backing is inelastic, which along with the non-compressible pad, provides a non-resilient dressing capable of applying the pressure necessary to achieve hemostasis. The pad typically comprises a plurality of plies of dense cotton gauze. The pressure bandage may be applied by one individual, quickly and efficiently, at a low cost.

The invention belongs to the technical field of medical equipment, in particular to an automatic blood collection and automatic transfusion nursing bed. It includes nursing institutions, The main cantilever mechanism and the auxiliary cantilever mechanism arranged on both sides of the nursing mechanism and the functional platform arranged on the main cantilever mechanism or the auxiliary cantilever mechanism are provided with a guide rail, a driving device and a rotating device, and the functional platform comprises an arm fixing mechanism, a needle holding mechanism and a needle positioning mechanism. The main cantilever mechanism and the auxiliary cantilever mechanism are provided with a guide rail, a driving device and a rotating device. The automatic blood collection and automatic transfusion nursing bed of the invention, through the cantilever mechanism to realize the rough positioning of the needle entry point, Then the needle insertion point is accurately positioned by the nearinfrared image processing module and the ultrasonic module, and the needle insertion operation is completed by the linkage control of the injection mechanism, so as to realize the venous blood sampling or venous injection function, which has the characteristics of high venous puncture quality, simultaneously realizes the simultaneous operation of multiple nursing beds, reduces the workload, and ensures the blood sampling and medication time.

The invention relates to the field of medical appliances, and in particular relates to a thrombosis prevention device of a venous indwelling needle. The thrombosis prevention device is composed of a sleeve seat, a sleeve, a piston, a pushing pipe and a needle core and is characterized in that the piston is arranged in the sleeve seat, the piston is fixed at the end of the pushing pipe, and the needle core is located in the pushing pipe and is sleeved in the sleeve after penetrating through the piston. Transfusion can be carried out after venous puncture and needle core pulling-out according to the normal operation. When the transfusion is paused and the pipe is sealed, the piston is pushed forward and seals the water inflow hole of the sleeve. When the transfusion is continued, the piston is pulled backward. The thrombosis prevention device provided by the invention is simple to operate, and has double thrombosis prevention functions of positive pressure and blood backflow sealing and preventing.

The present invention relates to ergonomic hand instruments and medical procedures. In particular, the invention relates to a dissector, and methods for the dissection of tissue from skin to an underlying blood vessel and the methods of accomplishing such dissections and arterial and venous punctures.

The invention relates to an apparatus (40) for detecting moisture, which is intended for the use in an apparatus (B) for monitoring an access to a patient for a device by means of which a fluid is conducted to and / or removed from a patient via a hose line, in particular for monitoring the vascular access during an extracorporeal blood treatment, wherein blood of a patient is removed from the patient via an arterial hose line (5), which has an arterial puncture cannula (6), and is conducted back to the patient via a venous hose line (7), which has a venous puncture cannula (8). The apparatus according to the invention for detecting moisture is designed as a pad (22) which is made of a flexible material and is to be applied onto the patient's skin and which comprises an upper side (22A) facing away from the patient's skin and a lower side (22B) facing the patient's skin. The pad (22) comprises an opening (23) for the passage of fluid, in particular blood, and a moisture sensor (28) having contact elements (28D, 28E) for the connection of the same. The moisture sensor (28) is capable of detecting blood flowing through the opening (23) to the surface of the pad (22). The apparatus according to the invention is characterized in that the lower side (22A) of the pad (22) is impervious to fluid.

The invention provides a removal-free temporary vena cava filter and a manufacture method thereof. A plurality of elastic support wires are arranged in the same direction by enclosing the same central axis; one end of each elastic support wire is collected and fixed on an end cap, and the other end of each elastic support wire is connected to a support ring, so that a cage-shaped structure with one end opened and the other end collected is formed; after the end cap which is made of a degradable material is degraded in a preset time, the metal wires in a collection region are restored by means of own elasticity, and attached to the vascular wall to form a structure similar to an intravascular stent, so that the vessel lomen can be completely opened, lumen inflammatory stenosis caused by the filter can be dilated, and the vascular wall is endothelialized; the metal wires supporting on the vascular wall can be embedded by the blood vessel, so that the lumen becomes smooth and clear; and only once venipuncture operation is required, and secondary surgery for taking out, and related complication and cost can be saved.

The simple venous puncture demonstration model includes simulating demonstration board, simulated blood vessel, blood vessel plug, transfusion device and connector for the simulated blood vessel and the transfusion device. The simulating demonstration board is made of silicone rubber in the color similar to that of skin and has four cavities of different depths in the middle part. There are four bluish simulated blood vessels of different diameters set in the cavities and eight blood vessel plugs in the simulated blood vessel ends separately. The transfusion device consists of common transfusion bag and transfusion unit without needle. The present invention provides environment similar to clinical venous puncture.

The invention relates to an arteriovenous puncture needle. The current vascular puncture needle cannot judge whether an outer sleeve enters the blood vessel or not, and the success rate of inserting the outer sleeve after puncture is not high. In the invention, the structure and functions of the existing vascular puncture needle are changed, the arteriovenous puncture needle judges whether the outer sleeve enters the artery and the vein, and the success rate of inserting outer sleeve after puncture is improved. The arteriovenous puncture needle is characterized in that grooves are arranged at the outer surface of an inner puncturing steel needle and the inner wall of an outer sleeving hose, or the caliber of the rear part of the inner puncturing steel needle is reduced, and an air gap between the outer sleeving hose and the inner puncturing steel needle is increased; a notch is arranged at the top end of the outer sleeve; the outer sleeve is judged whether to enter the blood vessel through the blood flowing out along the groove; the length of the outer sleeving hose is increased, the tilt angle of a needle head bevel of the inner puncturing steel needle is increased, the needle head bevel of the inner puncturing steel needle is changed to face downward, and the probability of puncturing the opposite blood vessel by the inner puncturing steel needle is reduced; and anticoagulant coatings are arranged on inner and outer walls of the inner puncturing steel needle and the inner wall of the outer sleeving hose so as to prevent the inner puncturing steel needle or the air gap of the groove from being blocked by small blood clots after repetitive tentative needle insertion.

The invention relates to a deep vein puncture device, comprising internal needle and sheath. It is characterized in that: the tip end of internal needle is nib, there is side pore and inactive separated vessel wall, the external diameter of internal needle is small, about 0. 1-0. 5 mm (when the external diameter is 0. 5mm, the cross-sectional area is 14. 8% of that of normal 18 G deep vein puncture needle, and the blood amount is 2. 19% of that of normal 18 G puncture needle at the same time), so the injury is greatly reduced; the sheath is shorter than internal needle, and is equipped with conical tip and side pore. When the tip end of internal needle punctures into deep vein, the sheath can be conveyed to vein along internal needle, the steel silk is conveyed to deep vein through sheath cavity and side pore. the invention is characterized by simple, accurate and safe operation. The outer wall of internal needle and sheath are equipped with scale, which is helpful to determine the needle depth, and are also equipped with end that connects injector.

The invention provides a hand back vena model for near-infrared hand back subcutaneous vena depth measurement. The model comprises a hand back bone model bracket in a hand shape, an infusion pipe arranged along the hand back bone model bracket and a skin layer sleeving the surface of the hand back bone model bracket. The invention further provides a measuring method for a near-infrared hand back subcutaneous vena depth. The hand back vena model is prepared by adopting the above devices, standardization, curve fitting and calibration are carried out on a vena gray value of a hand back model image and a subcutaneous depth value of a hand back model vena vein, the visual differences of the subcutaneous depth of the hand back model vena vein can be finally given quantificationally, real-time annotation is performed on the measured vein depth, so that medical staffs can conveniently make reference for judgement when puncturing the vena, and the purpose of medical application assistance is achieved.

The invention discloses an ultrasonic-image-based puncture needle tip and vascular wall depth localization method and belongs to the technical field of intelligent medical appliances. The method comprises the specific steps: selecting an upside zone of a subcutaneous ultrasonic image of a blood vessel of a venous puncture region as a zone of interest, carrying out de-noising, adaptive threshold binarization, image morphology open operation, closed operation, vascular wall contour extracting and blood-vessel-chamber-inside-zone puncture needle contour scanned extracting, and carrying out calculating, so as to obtain subcutaneous depth of a vascular wall and depth and puncture angle of a medical puncture needle. According to the method, the subcutaneous depth of the vascular wall can be effectively identified and detected, the depth and puncture angle of a tip of the puncture needle can be effectively tracked and detected, an advancement distance of the puncture needle is computed according to actual depth and needle puncture angle of the tip of the puncture needle, and the accuracy, safety and reliability of venous puncture can be improved by applying the method to the fields of intelligent blood sampling or transfusion robots, intelligent surgical robots and the like.

The head carried venous puncture leading instrument is one venous imaging system comprising infrared emitter, infrared receiver and head carried display. The infrared emitter consists of several near infrared LEDs of 800-850 nm emitted wavelength. The infrared receiver is one low-irradiation high-resolution white and black video camera with one 800 nm infrared filter before its lens. The display is one head carried spectacles connected to the video camera. The present invention makes it possible to watch the veins on dorsum of hand clearly and is used in venous puncture to facilitate the vein searching.

The invention relates to the field of medical appliances, in particular to a disposable venous blood sample collection needle (reflux prevention type). It includes a venipuncture needle with a needle handle, a hose and a needle seat; a one-way valve fixing seat is arranged in the cavity of the needle seat, and a latex one-way valve is assembled on the one-way valve fixing seat; the soft The tail end of the tube is inserted and assembled on the blood inlet of the one-way valve fixed seat; the outlet of the tail of the needle seat is inserted and equipped with a tube plug puncture needle for connecting the negative pressure blood collection container, and the tube plug puncture needle is covered Has a latex sheath. The present invention is provided with the needle seat with latex one-way valve inside, and in the process of human body vein blood collection, latex one-way valve is open state, and after blood collection is finished, negative pressure blood collection container is pulled out, and latex one-way valve closes immediately, thereby prevents negative pressure. The blood in the pressure blood collection container returns to the human body instantly, so that the negative pressure blood collection container is completely isolated from the human body, even if there are bacteria in the negative pressure blood collection container, it will not cause harm to the human body.

The invention discloses a multifunctional blood collection device suitable for collection of a trace blood sample. The device includes a blood collection tube and a sealing member, wherein the sealingmember is installed on the blood collection tube, venous puncture and vacuum blood collection are realized through the sealing member, and the blood collection tube is divided into a blood collectionsection and a collection section; and a blood guide tube mouth is formed in the blood collection section, the blood guide tube mouth is provided with an outer edge and a flow guide slope which are used for guiding a liquid into the collection section for collection, and the bottom of the collection section is closed. Venous blood is collected when the sealing member is connected with the blood collection tube, peripheral blood collection is achieved when the blood collection section is isolated from the sealing member, so that needs of venous blood collection and peripheral blood collection are met at the same time, the multifunctional blood collection device is matched with an existing automatic labeling on-line machine, and multifunctional blood collection and standardized processing are achieved.

The invention relates to apparatus for conveniently fixing the vein in non-invasive puncture. The apparatus comprises a shell, a display screen, a sensor chip, a near-infrared light processor, and bandages, wherein the shell is of a left-half-turning n-shaped structure, the shell comprises an upper shell and a lower shell, the display screen is arranged at the middle position of the upper surfaceof the upper shell, the near-infrared light processor is arranged at the middle position above the display screen, the sensor chip is arranged below the display screen, a power switch is arranged on one side of the sensor chip, the lower shell is provided with a puncture through hole, the bandages are fixedly arranged on two sides of the lower shell, and bandage surfaces on two sides are providedwith matching Velcro. The advantages of the apparatus are as follows: the apparatus uses bandage compression and is combined with the visual operation screen to perform venous puncture on a patient, and mainly uses the screen or the development on the skin to guide a doctor and nurse to confirm the position, depth and direction of the vein, and at the same time the bandages can help to fix a venous blood vessel at a puncture site, so that infusion only once is facilitated, and the repeated needle insertion is avoided.

The invention relates to a hemostasis device, in particular to a constant-pressure type arteriovenous puncturing hemostasis device. The constant-pressure type arteriovenous puncturing hemostasis device is characterized by comprising at least one fixing belt and an air pump control unit, wherein an air bag is arranged on the fixing belts, is in an oblong shape, and is fixed along the length direction of the corresponding fixing belt, and the air bag is connected with an air pump control unit through a hose pipe. Compared with the existing hemostasis, the constant-pressure type arteriovenous puncturing hemostasis device has the characteristic that the safety and convenience are realized.

The invention relates to a venous puncture system based on pressure field detection, characterized by comprising: a plurality of infrared cameras fixed in a treatment chamber; a detection device having a variable shape detection face on which three-dimensional pressure sensors perpendicular to the detection face are arrayed on the detection face; a compression device to apply pressure to the localskin from the certain position of the proximal part of the vein under puncture; a master control device; a puncture device, wherein the master control device controls the puncture device according toa puncture spot, puncture angle and a puncture path to operate a puncture needle to puncture the skin, subcutaneous tissue and a vein in sequence. The venous puncture system herein provides precise venous positioning and automated artery puncturing, has no need for medical personnel's operation and saves medical resources; venous compliance can be calculated during detecting to eliminate venous disorders; the specific positions of the venin and puncture needle can be calculated during puncturing, misopeartion is avoided, and postoperative complications are decreased.

The invention provides a method and a device for instructing deep venous puncture and catheterization in severe case emergency medical treatment. A hose containing normal saline is arranged behind a puncture needle tube, pressure in the contact position of a needle head is conducted by the normal saline, pressure in the contact position of the needle head is sensed in real time by a pressure sensor and displayed on a displaying and alarming device, the position of the needle head operated by a doctor is promoted according to differences of pressure changes in arteries, veins and non-blood vein positions, in particular, an alarm can be given out in time when the needle head is contacted with the arteries, besides, the doctor has experience, and accordingly, the puncture success rate is stabilized and increased; the device is compact, does not influence other operations and is convenient to use; the device contacted with a patient is non-electrified equipment, the pressure sensing device and the display alarming device are connected through a data line, and the safety of the patient is improved.

The present invention relates generally to a warming apparatus such as but not limited to a sleeve with an attached tourniquet that allows for a method of warming human body parts and a method to induce vasodilation to produce the ease of venipuncture. The invention preferably induces vasodilation by applying heat to an area and then further where venipuncture or intravenous catheter insertion is desired, preferably constricting and compressing the veins by bringing them to the surface with the tourniquet.

The invention belongs to the field of medical equipment, and particularly relates to intelligent equipment for improving the one-time success of superficial venipuncture and catheterization, and a usemethod thereof. In order to solve the problem of a low one-time success rate of superficial venipuncture and catheterization, the invention focuses on solving two core problems of venous displacementand a limited safety range of a puncture diameter line when venipuncture and catheterization are carried out. A near-infrared illumination imaging vein positioning assembly is used to analyze, automatically identify and select a puncture vein; a vein fixing and puncture assembly is designed to realize vein fixing and innovate a safe puncture and catheterization method; a blood return recognitionassembly is used to realize the monitoring feedback of superficial venipuncture and catheterization, and judge whether the puncture is successful or not; a disinfection film-sticking assembly is usedto realize skin disinfection before puncture and indwelling needle film-sticking fixing after puncture; and a support fixing assembly designed according to anatomy is used to complete comfortable support fixing of a limb where a venipuncture site is located. The beneficial effects are that the certainty of the success of superficial venipuncture is greatly improved, the pain of patients is reduced, and the medical safety is improved.

The invention provides a centering motion blood sampling device. The centering motion blood sampling device comprises a posture adjusting module, an infrared imaging module (2) and a venipuncture device (1); the posture adjusting module is suitable for driving the infrared imaging module (2) and the venipuncture device (1) to rotate around a first center line (5); the venipuncture device (1) comprises a puncture movement unit (11), a swing unit (12) fixedly connected with the puncture movement unit (11), and a blood taking needle assembly (13) fixedly connected with a swing arm (123) of the swing unit (12); the puncture movement unit (11) is suitable for driving the swing unit (12) to move along a Z axis, and the swing unit (12) is suitable for driving the blood taking needle assembly (13)to rotate around a second center line (6); the first center line (5) and the second center line (6) intersect at a blood sampling point, the blood taking needle assembly (13) comprises a blood takingneedle (133), and a needle tip contour line (135) of the blood taking needle (133) always points to a blood taking point. According to the scheme, the purpose of accurately adjusting the angle of theblood taking needle (133) can be achieved.

The invention relates to a venous puncture system based on temperature field detection. The system is characterized by comprising a treatment chamber, a plurality of infrared cameras, a detection device, a pressurization device, a main control device and a puncture device, wherein the indoor temperature of the treatment chamber is maintained at the set temperature; the plurality of infrared cameras are fixedly in the treatment chamber; the detection device has a detection surface with variable shape; temperature sensors are in matrix arrangement on the detection surface; the pressurization device is used for exerting the pressure on the local skin in a certain position at the proximal part of the puncture vein; the main control device controls the puncture device to operate the puncture needle to sequentially puncture the skin, the subcutaneous tissue and the vein according to the puncture point, the puncture angle and the puncture path. The vein precise positioning and the arteriopuncture atomization can be realized by the invention. The medical personnel operation is not needed; medical resources are saved; in the detection process, the venous compliance can be calculated, so that the vein lesion is avoided; in the puncture process, the concrete position of the vein and the puncture needle can be calculated; wrong operation do not occur; the postoperative complications are 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 discloses a venipuncture hemostatic tamper. A medical water absorbing material is made into a cylinder which is transversely adhered to an elastic tape. The venipuncture hemostatic tamper can automatically pressurize on a venipuncture needle hole for hemostasis to solve the problem of inconvenience brought by locally pressing the needle hole with fingers after needle withdrawing of superficial venipunture / superficial arteriopuncture. The venipuncture hemostatic tamper is used for automatically pressurizing the needle hole for the hemostasis after the needle withdrawing of the superficial venipunture / superficial arteriopuncture. The venipuncture hemostatic tamper has the advantages of simple manufacture, low cost, reasonable design, no untoward effect of the used material on a human body, and capability of undergoing germicidal treatment.

The invention relates to the technical field of arterial puncture, and specifically relates to a disposable arterial blood gas puncture patch. The puncture patch can display correct arteriovenous puncture points and is convenient for medical staff to blindly collect arterial blood gas, so that the peripheral blood vessels and nerves of patients can be prevented from being stabbed by mistake. The medical staff can remove a non-toxic sealed protective film, tightly attach a silicone skin patch to the skin of a patient and wind four secondary fixation binding bands on the body of the patient to fix with four fixing velcro tapes; sterilized strip cotton disinfects the surface of the skin in a blood gas puncture strip hole; and two color-changing induction coatings perform induction change through the skin surface temperature and arterial blood vessel temperature of the patient, and as the skin surface temperature is relatively lower than the arterial blood vessel temperature, the color-changing induction coating located at the upper part of the arterial blood vessel can become colorless and the color-changing induction coating located at the upper part of skin surface can turn red, sothat the medical staff can find the accurate position of the arterial blood vessel in the blood gas puncture strip hole by comparing the two color-changing induction coatings.

The invention provides a vein and artery recognition method based on a neural network. The vein and artery recognition method comprises the steps of inputting a to-be-recognized ultrasonic image intoa neural network model to be processed; obtaining position information of veins and arteries from a to-be-recognized ultrasonic image through the neural network model; distinguishing the marked vein and artery according to the acquired position information, and generating an ultrasonic image containing the vein mark and the artery mark. According to the invention, the method is used for automatically identifying the artery and the vein in the ultrasonic image to be identified, is safe and efficient, can help doctors to improve the diagnosis accuracy, better assists the doctors in identifying the artery and the vein, and further assists the doctors in venipuncture.

The invention discloses an arm venipuncture training model. The arm venipuncture training model comprises a high-simulation arm model of which the interior is of a hollow structure and a simulation vein vessel arranged in the high-simulation arm model, a notch is formed in the position, needing to be punctured, of the high-simulation arm model, the notch is filled with a puncture module, and the high-simulation arm model with the complete appearance is formed. The puncture module comprises simulated skin and simulated subcutaneous soft tissue, a vein groove with the adjustable size is formed in the simulated subcutaneous soft tissue, and a simulated vein blood vessel of the puncture module is embedded in the vein groove. The simulated vein is formed by connecting five pipelines in parallel, the distribution positions of the five pipelines are respectively an upper pipeline, a lower pipeline, a left pipeline, a right pipeline and a middle pipeline, one ends of the five pipelines are closed through buckles, and the other ends of the five pipelines are filled with liquid with different colors through five liquid storage tanks of the constant-pressure liquid supply device. The trainingmodel provided by the invention is convenient for a trainee to adjust the inclination, depth or position of next puncture, and the puncture comfort of a patient is improved.

The present invention discloses one automatic rationing venous blood taking needle device and relates to clinical blood sampling device. The automatic rationing venous blood taking needle device consists of one bi-directional taking needle and one hand-held syringe. The bi-directional taking needle consists of a 7# venous puncture needle, a needle seat, a bolt and a 8# venous puncture needle. The hand-held syringe consists of a sleeve, a switch unit, a piston, a pull rod, a spring, a positioning tube, a ventilating port and a hose. The bi-directional taking needle is fixed via thread onto the switch unit of the hand-held syringe. The present invention is one disposable device operating on vacuum negative pressure principle, and has the features of automatic rationing venous blood taking, raised vacuum accuracy, high vacuum maintaining capacity, etc.