Safety closed artery indwelling needle

Abstract

The utility model discloses a safety type closed artery indwelling needle which comprises a puncture needle tube, a blood return tube, a transparent soft catheter, a conical catheter, a blood blocking valve and a containing tube, one end of the transparent soft catheter is fixedly communicated with the thin shaft diameter end of the conical catheter, and the thick shaft diameter end of the conical catheter is fixedly communicated with an inlet of the blood blocking valve. The outlet of the blood blocking valve is fixedly communicated with the inlet of the containing tube, the end of the puncture needle tube is fixedly communicated with one end of the blood return tube, the end of the blood return tube is inserted into the outlet of the containing tube, the puncture needle tube sequentially penetrates through the containing tube, the rubber sliding block of the blood blocking valve, the conical catheter and the transparent soft catheter, and the needle tip of the puncture needle tube is exposed out of the transparent soft catheter. The puncture needle has the advantages that when the puncture needle tube is drawn out, artery blood is effectively blocked through the blood blocking valve and the internal rubber sliding block, and the risk of infection is avoided while needle drawing is not interfered. After the puncture needle is drawn out, the artery monitor is connected, the knob is rotated, and the rubber sliding block is displaced to enable blood to circulate, so that the operation time is full, and the operation convenience is improved.

Description

Technical Field

[0001] This utility model relates to the field of medical indwelling needle technology, specifically to a safe closed arterial indwelling needle. Background Technology

[0002] During the medical procedure, after the indwelling needle is inserted into the patient's artery, it needs to be removed, and then the sensor connector of the arterial monitor needs to be threaded on. The connector of a typical indwelling venous catheter connects to a transparent catheter via a flexible tube. The blood flowing through this tube can become unstable due to bends in the tube, affecting the accuracy of the arterial monitor and making it unsuitable. The German brand B. Braun's indwelling arterial and venous catheters have a structure as follows... Figure 1 As shown, it mainly includes a transparent blood return tube 1, a needle tube 2 inserted through the front end of the blood return tube 1, the needle tube 2 inserted into the end 3 and passing through a transparent catheter 4 connected to the end 3, and a needle safety clip 5 fitted on the needle tube 2. In use, the needle tube 2 is used to puncture the artery, and the transparent catheter 4 is also inserted into the blood vessel at the same time. Blood returns into the blood return tube 1 to confirm the puncture effect. Then, the blood return tube 1 and the needle tube 2 are pulled out from the end 3 and the transparent catheter 4. The end of the needle safety clip 5 is elastic and closes to hold the needle tip of the needle tube 2 to achieve the anti-puncture effect. The induction connector of the arterial monitor is screwed onto the end 3. Blood enters the end 3 through the transparent catheter 4 and directly acts on the induction connector. There is no tubing connection, which is widely used.

[0003] However, due to the high arterial pressure, blood will spray out from the tip 3 during the gap between removing the needle 2 and connecting to the arterial monitor, which can easily cause contamination. Usually, nurses use one hand to press down on the artery to prevent blood from spraying out, but connecting the arterial monitor requires the other hand to operate, which is inconvenient for single-handed operation. Utility Model Content

[0004] The purpose of this invention is to provide a safe, closed-loop arterial indwelling needle.

[0005] This utility model is implemented by the following technical solution:

[0006] A safety-type closed arterial indwelling needle includes a puncture needle tube, a reflux vessel, a transparent soft catheter, a tapered catheter, a blood choke valve, and a receiving tube. One end of the transparent soft catheter is fixedly connected to the thinner end of the tapered catheter, and the thicker end of the tapered catheter is fixedly connected to the inlet of the blood choke valve. The outlet of the blood choke valve is fixedly connected to the inlet of the receiving tube. The end of the puncture needle tube is fixedly connected to one end of the reflux vessel. The end of the reflux vessel is inserted into the outlet of the receiving tube. The puncture needle tube passes sequentially through the receiving tube, the rubber slider of the blood choke valve, the tapered catheter, and the transparent soft catheter, with the needle tip of the puncture needle tube protruding from the transparent soft catheter.

[0007] The blood-blocking valve includes a rectangular housing with an inlet and an outlet at each end. The top of the rectangular housing is connected and fixed to the bottom of a vertical tube. A knob is screwed to the top of the vertical tube, and a push rod is fixed to the inner top of the knob. The push rod extends into the top of the vertical tube.

[0008] The inner walls on both sides of the rectangular housing are provided with sliding grooves. The rectangular housing is provided with a rubber slider. The two ends of the rubber slider are slidably placed in the corresponding sliding grooves. A rubber sheet is integrally fixed to the bottom of the rubber slider. The rubber sheet abuts against the inner bottom of the rectangular housing. A rubber column is integrally fixed to the top of the rubber slider. The rubber column is placed in the vertical tube and abuts against the top rod.

[0009] Preferably, it also includes a needle safety clip, which is fitted onto the puncture needle tube inside the receiving tube.

[0010] Preferably, the inner top of the rectangular housing is tapered, and the top of the rubber slider matches the inner top of the rectangular housing.

[0011] The advantages of this invention are: when the puncture needle is withdrawn, the arterial blood is effectively blocked by the blood-blocking valve and the adjustable rubber slider inside it, which does not interfere with the needle withdrawal and avoids the risk of infection. It is not necessary to press the blood vessel with your hand. In addition, the rubber slider can also be used to deliver the drug solution after puncture by instruments such as injection needles.

[0012] After the puncture needle is removed, the arterial monitor is connected. Rotating the knob causes the rubber slider to move and create a gap, allowing blood flow to facilitate the use of the arterial monitor, providing ample operation time and improving ease of operation. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the existing technology structure in the background art.

[0015] Figure 2 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 3 yes Figure 2 Side view of the blood flow control valve.

[0017] Figure 4 yes Figure 2A schematic diagram showing the reflux of the blood vessel, the remaining transparent soft catheter after the puncture needle, the conical catheter, the blood choking valve, and the receiving tube.

[0018] Figure 5 yes Figure 4 Side view of the blood flow control valve.

[0019] In the diagram: 1. Blood return tube; 2. Needle tube; 3. End tip; 4. Transparent catheter; 5. Needle safety clip; 6. Puncture needle; 7. Blood return tube; 8. Transparent soft catheter; 9. Conical catheter; 10. Blood choking valve; 10. Rectangular shell; 10.1. Vertical tube; 10.2. Knob; 10.3. Push rod; 10.4. Slide groove; 10.5. Rubber slider; 10.6. Rubber sheet; 10.7. Rubber column; 10.8. Receptacle tube; 11. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] like Figures 2-5 As shown, a safety-type closed arterial indwelling needle includes a puncture needle tube 6, a return vessel 7, a transparent soft catheter 8, a conical catheter 9, a blood choking valve 10, and a receiving tube 11. One end of the transparent soft catheter 8 is fixedly connected to the thin end of the conical catheter 9, and the thick end of the conical catheter 9 is fixedly connected to the inlet of the blood choking valve 10. The outlet of the blood choking valve 10 is fixedly connected to the inlet of the receiving tube 11. The end of the puncture needle tube 6 is fixedly connected to one end of the return vessel 7. The end of the return vessel 7 is inserted into the outlet of the receiving tube 11. The puncture needle tube 6 passes sequentially through the receiving tube 11, the rubber slider 10.6 of the blood choking valve 10, the conical catheter 9, and the transparent soft catheter 8, with the needle tip of the puncture needle tube 6 protruding from the transparent soft catheter 8.

[0022] Puncture needle 6 and attachment Figure 1 The needle tube 2 in the middle has the same structure, and the transparent soft catheter 8 is attached to the needle tube 2. Figure 1 The transparent catheter 4 in the middle has the same structure, and the ileovascular vessel 7 is the same as the appendix. Figure 1 The blood return tube 1 in the middle has the same structure, and the receiving tube 11 is provided with the same external thread as the end 3, which is used to screw into the induction connector of the arterial monitor.

[0023] In use, the puncture needle 6 is used to puncture the artery, and the transparent soft catheter 8 is inserted into the blood vessel at the same time. Blood returns into the return vessel 7 to confirm the puncture effect. Then, the return vessel 7 and the puncture needle 6 are withdrawn from the receiving tube 11. The puncture needle 6 is withdrawn in sequence from the transparent soft catheter 8, the conical catheter 9, the rubber slider 10.6 of the blood blocking valve 10, and the receiving tube 11. When the blood sprays out, it is blocked by the rubber slider 10.6.

[0024] The blood-blocking valve 10 includes a rectangular housing 10.1, which can be made of a transparent material commonly used in medical devices, such as polypropylene (PP), polystyrene (PS), polyethylene (PE), etc. The rectangular housing 10.1 has an inlet and an outlet at both ends. The top of the rectangular housing 10.1 is connected and fixed to the bottom end of the vertical tube 10.2. A knob 10.3 is screwed to the top of the vertical tube 10.2. A push rod 10.4 is fixed inside the top of the knob 10.3. The push rod 10.4 extends into the top of the vertical tube 10.2. Rotating the knob 10.3 in the forward and reverse directions causes it to move up and down on the vertical tube 10.2, which in turn drives the push rod 10.4 to move up and down inside the vertical tube 10.2.

[0025] The inner walls on both sides of the rectangular shell 10.1 are provided with sliding grooves 10.5. A rubber slider 10.6 is provided inside the rectangular shell 10.1. The two ends of the rubber slider 10.6 are slidably placed in the corresponding sliding grooves 10.5. A rubber sheet 10.7 is integrally fixed to the bottom of the rubber slider 10.6. The rubber sheet 10.7 abuts against the inner bottom of the rectangular shell 10.1. A rubber column 10.8 is integrally fixed to the top of the rubber slider 10.6. The rubber column 10.8 is placed inside the vertical tube 10.2 and abuts against the top rod 10.4.

[0026] The rubber slider 10.6, rubber sheet 10.7 and rubber column 10.8 can be made of rubber or plastic materials commonly used in medical devices, and have elasticity and toughness, such as NR, IIR, PU and silicone rubber.

[0027] The elasticity of the rubber sheet 10.7 pushes the rubber slider 10.6 upwards, and the top of the rubber slider 10.6 fits against the inner top of the rectangular housing 10.1. The rubber sheet 10.7 and the rubber slider 10.6 seal the interior of the rectangular housing 10.1 and the groove 10.5. When the puncture needle 6 is withdrawn, the blood spraying into the rectangular housing 10.1 is blocked. After the receiving tube 11 is screwed to the induction connector of the arterial monitor, by rotating the knob 10.3, the push rod 10.4 moves downwards against the rubber column 10.8, and the rubber slider 10.6 can move up and down along the groove 10.5. The rubber slider 10.6 is driven downwards by the rubber column 10.8, and a gap appears between the top of the rubber slider 10.6 and the inner top of the rectangular housing 10.1, allowing blood to pass through, which is used to enable the induction connector of the arterial monitor.

[0028] It also includes a needle safety clip 5, which is fitted onto the puncture needle tube 6 inside the receiving tube 11.

[0029] The inner top of the rectangular housing 10.1 is tapered, and the top of the rubber slider 10.6 matches the inner top of the rectangular housing 10.1. The tapered top closes more tightly when the rubber slider 10.6 moves upward.

[0030] Working principle: In use, the puncture needle 6 is used to puncture the artery, and the transparent soft catheter 8 is inserted into the blood vessel at the same time. Blood returns into the return vessel 7 to confirm the puncture effect. Then, the return vessel 7 and the puncture needle 6 are withdrawn from the receiving tube 11. The puncture needle 6 is then withdrawn sequentially from the transparent soft catheter 8, the conical catheter 9, the rubber slider 10.6 of the blood-blocking valve 10, and the receiving tube 11. The elasticity of the rubber sheet 10.7 inside the blood-blocking valve 10 pushes the rubber slider 10.6 upward. The top of the rubber slider 10.6 is attached to the inner top of the rectangular shell 10.1. The rubber sheet 10.7 and the rubber slider 10.6 seal the interior of the rectangular shell 10.1 and the groove 10.5. At this time, the puncture needle 6 is withdrawn. The elasticity of the rubber slider 10.6 closes the hole of the puncture needle 6, and the blood spraying into the rectangular shell 10.1 is blocked.

[0031] After screwing the induction connector of the arterial monitor to the receiving tube 11, rotating the knob 10.3 causes the push rod 10.4 to move downward against the rubber column 10.8, the rubber slider 10.6 to move downward along the slide groove 10.5, the rubber sheet 10.7 to bend, and a gap appears between the top of the rubber slider 10.6 and the inner top of the rectangular housing 10.1, allowing blood to pass through, which is used to enable the induction connector of the arterial monitor.

[0032] Secondly, when the arterial monitor is not in use, the rubber sheet 10.7 and the rubber slider 10.6 enclose the interior of the rectangular shell 10.1 and the groove 10.5. At this time, the drug to be injected can be passed through the injection needle through the rubber slider 10.6 of the receiving tube 11 and the blood blocking valve 10 to the transparent soft catheter 8, and injected into the blood vessel through positive pressure input.

[0033] Advantages: When the puncture needle 6 is withdrawn, the arterial blood is effectively blocked by the blood-blocking valve 10 and its internal adjustable rubber slider 10.6, which does not interfere with the needle withdrawal and avoids the risk of infection. It is not necessary to press the blood vessel with your hand. Furthermore, the rubber slider 10.6 can also be used to deliver medication after puncture by instruments such as injection needles.

[0034] After removing the puncture needle, connect the arterial monitor and rotate knob 10.3 to move the rubber slider 10.6 to create a gap, allowing blood flow to facilitate the use of the arterial monitor, providing ample operation time and improving ease of operation.

[0035] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A safety occluding arterial indwelling needle, characterized by, The puncture needle tube, the blood return tube, the transparent soft catheter, the tapered catheter, the blood blocking valve and the containing tube are connected, one end of the transparent soft catheter is fixedly communicated with the thin shaft end of the tapered catheter, the thick shaft end of the tapered catheter is fixedly communicated with the inlet of the blood blocking valve, the outlet of the blood blocking valve is fixedly communicated with the inlet of the containing tube, the end of the puncture needle tube is fixedly communicated with one end of the blood return tube, the end of the blood return tube is inserted into the outlet of the containing tube, the puncture needle tube passes through the containing tube, the rubber sliding block of the blood blocking valve, the tapered catheter and the transparent soft catheter in sequence, and the needle tip of the puncture needle tube leaks out of the transparent soft catheter. The blood blocking valve comprises a rectangular shell, the rectangular shell is provided with an inlet and an outlet at two ends respectively, the top of the rectangular shell is fixedly communicated with the bottom end of a vertical pipe, the top end of the vertical pipe is screwed with a knob, the inner top of the knob is fixed with a top rod, and the top rod extends into the top end of the vertical pipe. The inner walls of the two sides of the rectangular shell are provided with sliding grooves, the rectangular shell is provided with the rubber sliding block, the two ends of the rubber sliding block are slidably arranged in the corresponding sliding grooves, the bottom of the rubber sliding block is integrally fixed with a rubber sheet, the rubber sheet abuts against the inner bottom of the rectangular shell, the top of the rubber sliding block is integrally fixed with a rubber column, the rubber column is arranged in the vertical pipe and abuts against the top rod.

2. The safety enclosed arterial indwelling needle according to claim 1, wherein: The needle safety clip is sleeved on the puncture needle tube in the containing tube.

3. The safety enclosed arterial indwelling needle according to claim 1, wherein: The inner top of the rectangular shell is conical, and the top of the rubber sliding block matches the inner top of the rectangular shell.

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