Injection connection tube

Abstract

The application belongs to the technical field of medical instruments, and discloses an injection connecting pipe, which comprises a pipe body, the two ends of the pipe body are respectively used for being connected with an injection needle and an injection liquid container; an induction assembly, the induction assembly comprises a first sensor, the first sensor is arranged on the pipe body and close to one end of the injection needle, so as to measure the pressure in the blood vessel during the injection process and feedback the abnormal pressure value; a safety valve is arranged on the pipe body and is used for connecting or blocking the pipe body, the safety valve is electrically connected with the first sensor, the first sensor converts the abnormal pressure value into an electric signal and feeds back to the safety valve, so that the safety valve blocks the pipe body. The application can quickly and timely close the safety valve through the induction assembly, improve the safety of the patient, reduce the possibility of medical accidents, and improve the work efficiency of the medical staff.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, and more particularly to an injection connecting tube. BACKGROUND

[0002] Contrast agent injection is an indispensable part of medical image diagnosis, especially in angiography, CT scanning, MRI and other examinations. In the monitoring of tumors, vascular diseases and other diseases, the use of contrast agents significantly improves the visibility of the lesion area, obtaining clearer blood vessel and tissue images, so as to more accurately identify and evaluate the lesion and track the progress of the disease and the treatment effect.

[0003] Before injecting the contrast agent, the medical staff will puncture the vein at the target position of the patient, and inject the contrast agent into the blood vessel through the injection syringe with the injection needle. During the puncture process, if the contrast agent is injected into the tissue outside the blood vessel, it may cause inflammation of the local tissue, resulting in redness, pain and tenderness, and in severe cases, the injection site may feel severe swelling and pain, and even cause tissue necrosis, causing patient dissatisfaction, and even leading to medical disputes. In the prior art, the contrast agent needs to be manually operated by the injection syringe, and the medical staff needs to adjust the injection head for puncture according to experience to reduce the occurrence of this problem, which cannot avoid the risk caused by human error, and therefore the safety is low, and the work efficiency of the medical staff is also affected. SUMMARY

[0004] The injection connecting tube provided by the embodiment of the present application can improve the safety of the patient, reduce the possibility of medical accidents, and improve the work efficiency of the medical staff when injecting the injection liquid.

[0005] The injection connecting tube provided by the present application adopts the following technical scheme:

[0006] An injection connecting tube comprises:

[0007] A pipe body, two ends of the pipe body are respectively connected with an injection needle and an injection liquid container;

[0008] An induction assembly, the induction assembly comprises a first sensor, the first sensor is arranged on the pipe body and close to one end of the injection needle, so as to measure the pressure in the blood vessel during the injection process and feedback the abnormal pressure value;

[0009] A safety valve is arranged on the pipe body and used for connecting or blocking the pipe body, the safety valve is electrically connected with the first sensor, and the first sensor converts the abnormal pressure value into an electrical signal and feeds back to the safety valve to block the pipe body.

[0010] Optionally, the sensing assembly further comprises a second sensor for detecting whether there is air bubble flowing through the tube, the second sensor is arranged on the tube and close to one end of the injection liquid container, the second sensor is electrically connected with the safety valve, and the second sensor feeds back an electric signal detected by the second sensor to the safety valve to make the safety valve block the tube.

[0011] Optionally, the safety valve comprises a valve seat, a valve core, a valve cap and a limiting piece, the valve seat is provided with a connecting channel, both ends of the connecting channel are communicated with the tube, one end of the valve core blocks the connecting channel, the other end of the valve core is connected with the valve cap, the valve cap moves away from the tube and is in contact with the limiting piece to position the valve cap, and the valve cap makes the valve core open the connecting channel for the injection liquid to flow through.

[0012] Optionally, the valve core comprises a connecting part for connecting the valve cap and a deformation part, one end of the connecting part away from the valve cap is located in the center of the deformation part, and the valve cap moves to drive the connecting part to move away from the connecting channel, so that the deformation part is deformed to generate a gap with the inner wall of the connecting channel, and the deformation part is unblocked from the connecting channel.

[0013] Optionally, the safety valve further comprises a cover fixedly connected with the valve seat, the cover is arranged in the valve cap and is in sliding fit with the valve cap, the cover is located on the side of the deformation part away from the connecting channel, the cover presses the deformation part and deforms synchronously with the deformation part.

[0014] Optionally, the limiting piece comprises a vertical plate, a magnetic baffle and an electromagnet arranged on one end of the vertical plate, the vertical plate and the magnetic baffle are fixed on the valve seat, and the electromagnet is electrically connected with the sensing assembly.

[0015] When the electromagnet does not receive the electric signal of the sensing assembly, the electromagnet is not electrified, the magnetic baffle is in a normal state, the valve cap moves to be in contact with and clamped with the magnetic baffle, and the tube is communicated with the connecting channel; when the electromagnet receives the electric signal of the sensing assembly, the electromagnet is electrified, the free end of the magnetic baffle is magnetically attracted to the electromagnet, the magnetic baffle is in a bent state, the magnetic baffle is unclamped and limited with the valve cap, so that the valve core blocks the connecting channel.

[0016] Optionally, the valve cap is provided with a clamping block corresponding to the circumferential wall of the magnetic baffle, one end of the magnetic baffle close to the valve seat is provided with an avoiding groove for avoiding the clamping block and a clamping groove for clamping with the clamping block, and the valve cap moves away from the tube to make the clamping block move from the avoiding groove to the clamping groove.

[0017] Optionally, an alarm component for issuing an alarm is further included, and the first sensor and the second sensor are both electrically connected with the alarm component.

[0018] Optionally, the alarm component includes a buzzer and an alarm lamp, and the buzzer and the alarm lamp are both electrically connected with the first sensor and the second sensor.

[0019] Optionally, the tube body is provided with a connecting male head and a connecting female head, the connecting male head is fixedly installed at one end of the tube body, and the connecting male head is used for connecting an injection needle and is close to the first sensor; the connecting female head is fixedly installed at the other end of the tube body, and the connecting female head is used for connecting an injection liquid container and is close to the second sensor.

[0020] From the above technical solutions, the embodiments of the present application have the following advantages:

[0021] 1. Whether the injection needle is correctly located in the blood vessel is judged by the change of the pressure value. If the first sensor measures an abnormal pressure value generated in the tube body, i.e. a rapidly rising pressure value or a pressure value exceeding a preset pressure value, the first sensor sends an electrical signal to the safety valve, and the safety valve quickly responds to the electrical signal from the first sensor to block the tube body, so that the injection liquid is immediately prohibited from flowing to the patient through the injection needle, the safety of the patient is improved, the possibility of medical accidents is reduced, and the operation of the medical staff on the connecting tube is omitted, thereby improving the work efficiency of the medical staff.

[0022] 2. The second sensor is arranged at one end of the tube body close to the injection liquid container, and the injection liquid and the bubbles first pass through the second sensor, which is conducive to the rapid detection of the bubbles. When the second sensor detects that bubbles flow through, the second sensor sends an electrical signal to the safety valve, and the safety valve quickly responds to the electrical signal from the second sensor to block the tube body, so that the injection liquid in the tube body is prohibited from flowing to the injection needle, thereby avoiding the bubbles from entering the blood vessels of the patient, reducing the risk of causing discomfort, complications or air embolism of the patient, and improving the safety of the patient. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0024] Figure 1 The whole structure of the injection connecting tube disclosed in the embodiments of the present application is shown in the schematic diagram.

[0025] Figure 2 A structure schematic view of the injection connecting pipe highlighted safety valve disclosed by the embodiment of the present application;

[0026] Figure 3 A structure sectional view of the injection connecting pipe highlighted safety valve disclosed by the embodiment of the present application.

[0027] Explanation of reference signs:

[0028] 1, pipe body; 11, connecting male head; 12, connecting female head; 2, induction assembly; 21, first sensor; 22, second sensor; 3, safety valve; 31, valve seat; 311, connecting channel; 3111, first channel; 3112, second channel; 32, valve core; 321, connecting part; 322, deformation part; 33, valve cap; 331, clamping block; 34, limiting part; 341, vertical plate; 342, magnetic baffle; 3421, avoiding groove; 3422, clamping groove; 343, electromagnet; 344, indicator lamp; 35, cover body; 4, data line; 5, connecting joint. DETAILED DESCRIPTION

[0029] The present application will be further described below in conjunction with the accompanying drawings.

[0030] The injection connecting pipe provided by the embodiment of the present application is used for injecting contrast medium, improves the safety of patients, reduces the possibility of medical accidents, and improves the work efficiency of medical staffs. The injection connecting pipe is also suitable for infusion of ordinary drugs or anesthetic drugs.

[0031] In order for those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work should belong to the scope of protection of the present application. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it. When the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the scope of protection claimed in the present application.

[0032] The terms "first", "second", "third", "fourth", and the like in the description and in the claims of the present application and above-described drawings are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the use of such terms is interchangeable under appropriate circumstances such that the embodiments described herein are capable of operation in other sequences than described or illustrated herein. In addition, the terms "comprise", "comprising", "include", "including", and the like, as used herein, are specifically intended to be construed as open-ended terms i.e., the inclusion of which does not preclude the inclusion of other steps, elements, objects, articles, or the like - e.g., the process, method, system, product, or apparatus as described herein can include more steps or units than those expressly listed or implied - without limitation to the specific disclosure.

[0033] Before injecting the contrast agent, the medical staff will puncture the vein of the target position of the patient, and inject the contrast agent into the blood vessel through the injection syringe with the injection needle. If the injection needle is correctly located in the blood vessel, the pressure in the syringe will slowly increase when the contrast agent is injected; if the injection needle is located in the tissue outside the blood vessel, the pressure in the syringe will suddenly increase when the contrast agent is injected. However, during the puncture process, the injection needle may penetrate the blood vessel or puncture into the muscle tissue, and if the contrast agent is injected into the tissue outside the blood vessel, it may cause inflammation of the local tissue, resulting in redness, pain and tenderness, and in severe cases, the injection site may feel severe swelling and pain, and even cause tissue necrosis. In the prior art, the contrast agent needs to be manually operated by the injection syringe, and the medical staff needs to adjust the injection head for puncture according to experience to reduce the occurrence of this problem, which cannot avoid the risk caused by human error, has low safety, and also affects the work efficiency of the medical staff.

[0034] To solve the above technical problems, the present application provides an injection connecting pipe, please refer to Figure 1 For an embodiment of the injection connecting pipe of the present application, it comprises a pipe body 1, a sensing assembly and a safety valve 3, both ends of the pipe body 1 are used for connecting with the injection needle and the injection liquid container respectively, the sensing assembly and the safety valve 3 are arranged in the pipe body 1, the sensing assembly is electrically connected with the safety valve 3, and the safety valve 3 is used for connecting or blocking the pipe body 1. The injection liquid flows from the injection liquid container to the injection needle through the pipe body 1, the sensing assembly is used for measuring various data during the injection in the pipe body 1, and abnormal detection data are converted into electrical signals and fed back to the safety valve 3 to make the safety valve 3 block the pipe body 1, so as to prohibit the injection liquid from continuing to flow to the patient.

[0035] Please refer to Figure 1The pipe body 1 is a transparent flexible pipe, which is usually made of PVC or TPU and the like. During infusion, the transparent flexible pipe can bend and adapt to various occasions to adjust the shape and position due to its softness, has high flexibility, makes the needle more easily inserted and positioned, and can keep the pipeline unobstructed during infusion. The transparency can facilitate medical staff to observe the liquid flow in the infusion pipe. In some other embodiments, the pipe body 1 can be a woven composite pipe, which increases the burst strength and improves the safety performance.

[0036] The pipe body 1 is provided with a connecting male head 11 and a connecting female head 12. The connecting male head 11 is fixedly installed at one end of the pipe body 1 and is used to connect the injection needle. The connecting female head 12 is fixedly installed at the other end of the pipe body 1 and is used to connect the injection liquid container. The connecting male head 11 and the connecting female head 12 enhance the installation stability of the injection needle and the injection liquid container. The connecting male head 11 and the connecting female head 12 are universal joints, which are not limited to injection of contrast medium, but can also be used for infusion of ordinary drugs or anesthetic drugs.

[0037] The sensing assembly includes a first sensor 21, which is preferably a high-precision pressure sensor. The first sensor 21 is arranged at one end of the pipe body 1 close to the injection needle to measure the pressure in the blood vessel during injection and to feed back abnormal pressure values. The first sensor 21 converts the abnormal pressure values into an electrical signal and feeds back to the safety valve 3 to block the pipe body 1.

[0038] The abnormal pressure value is a rapidly rising pressure value and a pressure value exceeding a preset pressure value. When the injection needle is correctly located in the blood vessel, the pressure in the blood vessel slowly rises during injection of the injection liquid, and the pressure value after rising does not exceed the preset pressure value. When the injection needle penetrates the blood vessel or punctures into the muscle tissue, the pressure in the blood vessel suddenly increases during injection of the injection liquid. The change in the pressure value is used to determine whether the injection needle is correctly located in the blood vessel. If the first sensor 21 measures an abnormal pressure value in the pipe body 1, i.e., a rapidly rising pressure value or a pressure value exceeding a preset pressure value, the first sensor 21 emits an electrical signal to the safety valve 3. The safety valve 3 quickly reacts to receive the electrical signal of the first sensor 21 to block the pipe body 1, which can immediately prohibit the injection liquid from flowing to the patient through the injection needle, avoid leakage of the injection liquid in the patient's body due to insufficient proficiency or operation error of the medical staff, improve the safety of the patient, reduce the possibility of medical accidents, reduce the operation of the medical staff on the connecting pipe, and improve the work efficiency of the medical staff.

[0039] The medical staff usually performs the exhaust before injecting the injection solution to avoid the air remaining in the tube 1 and then entering the blood vessel through the injection needle. The bubbles entering the blood vessel can cause serious complications such as blood vessel obstruction, air embolism, and the like. The exclusion process is complex and high-risk, and can require additional medical intervention. Although the medical staff will perform the exhaust, it is difficult to find the existence of small bubbles by the naked eye, so it is necessary to monitor the tube 1 for bubble detection. Further, the sensing assembly further comprises a second sensor 22 for detecting whether there is a bubble flowing in the tube 1, the second sensor 22 is preferably an optical bubble sensor, the second sensor 22 is arranged at one end of the tube 1 close to the injection solution container, the injection solution and the bubble first pass through the second sensor 22, which is conducive to the bubbles being detected more quickly. The second sensor 22 is electrically connected with the safety valve 3, and the second sensor 22 feeds back the electrical signal detected by the bubble to the safety valve 3 to make the safety valve 3 block the tube 1, and prohibit the injection solution in the tube 1 from flowing to the injection needle. When the second sensor 22 detects that there is a bubble flowing in the tube 1, the second sensor 22 sends an electrical signal to the safety valve 3, and the safety valve 3 quickly responds to block the tube 1 when receiving the electrical signal sent by the second sensor 22, to avoid the bubbles entering the blood vessel of the patient, reduce the risk of causing the patient to be uncomfortable, complications or air embolism, and improve the safety of the patient.

[0040] Please refer to Figure 1 and Figure 2 , the safety valve 3 is arranged at the middle position of the tube 1 and located between the first sensor 21 and the second sensor 22, the injection solution is detected through the second sensor 22, if the injection solution mixed with bubbles, the second sensor 22 sends an electrical signal to the safety valve 3 to make the safety valve 3 block the tube 1, and prohibit the injection solution from flowing to the injection needle; if there is no bubble flowing in the injection solution, the second sensor 22 does not emit an electrical signal, and the injection solution passes through the safety valve 3 to connect the tube 1 and flows through the patient's blood vessel through the injection needle. If the first sensor 21 measures that the pressure in the patient's blood vessel rapidly rises or exceeds the preset pressure value during the injection process, the first sensor 21 sends an electrical signal to the safety valve 3 to make the safety valve 3 block the tube 1, and prohibit the injection solution from flowing to the patient; if the first sensor 21 measures that the pressure in the patient's blood vessel slowly rises and does not exceed the preset pressure value during the injection process, the first sensor 21 does not send an electrical signal, and the injection solution flows through the patient's blood vessel through the injection needle.

[0041] It can be understood that the first sensor 21, the second sensor 22 and the safety valve 3 in the connecting pipe of the application are independent of each other in structure, and the first sensor 21, the second sensor 22 and the safety valve 3 are electrically connected through the data line 4, one end of the data line 4 is provided with a connecting joint 5 to transmit an electrical signal. Medical staff can select the first sensor 21 or the second sensor 22 to be combined with the safety valve 3 according to actual conditions, so as to reduce the cost and the burden of the patient under the premise of meeting the needs; at the same time, the simple and intuitive design enables medical staff to quickly master the operation method without complex settings or additional training, thereby improving the work efficiency. The connecting pipe has the advantages of convenient operation, quick installation, strong universality, safety to patients, low cost and the like.

[0042] Please refer to Figure 2 and Figure 3 , the safety valve 3 includes a valve seat 31, a valve core 32, a valve cap 33 and a limiting piece 34. The valve seat 31 is sleeved on the outer peripheral wall of the pipe body 1 and is fixedly connected with the pipe body 1, the valve seat 31 is provided with a connecting channel 311, both ends of the connecting channel 311 are communicated with the pipe body 1, one end of the valve core 32 shields the connecting channel 311, the other end of the valve core 32 is connected with the valve cap 33, the valve cap 33 moves away from the pipe body 1 and is in contact with the limiting piece 34 to position the valve cap 33, the valve cap 33 makes the valve core 32 open the connecting channel 311 to allow the injection liquid to flow. Before using the connecting pipe to inject, the valve cap 33 is pulled away from the pipe body 1, the valve cap 33 moves to the limiting piece 34 and is positioned by the limiting piece 34 to fix the position of the valve cap 33, the valve cap 33 drives the valve core 32 to move during the movement process to make the valve core 32 open the connecting channel 311, and the injection liquid flows from the injection liquid container through the injection needle tube through the connecting channel 311.

[0043] Please refer to Figure 3 , specifically, the valve core 32 is made of silica gel material, the valve core 32 includes a connecting part 321 for connecting the valve cap 33 and a deformation part 322 for generating deformation, the connecting part 321 and the deformation part 322 are integrally formed, one end of the connecting part 321 away from the valve cap 33 is located at the center of the deformation part 322, the valve cap 33 drives the connecting part 321 to move away from the connecting channel 311 to make the deformation part 322 generate deformation and generate a gap with the inner wall of the connecting channel 311, and the deformation of the deformation part 322 is removed. After the limiting piece 34 removes the positioning of the valve cap 33, the valve cap 33 is in a free state and removes the force acting on the connecting part 321 and the deformation part 322, the deformation part 322 restores the shape to re-block the connecting channel 311, and the valve cap 33 moves towards the pipe body 1 under the rebound force of the deformation part 322 and the connecting part 321 to return to the original position.

[0044] It can be understood that the bonnet 33 exerts an upward force on the connecting portion 321, the connecting portion 321 is subjected to the upward force so that the deformation portion 322 is deformed with the center as the origin, and the degree of deformation gradually decreases towards the edge portion of the connecting portion 321, so that the connecting portion 321 presents a concave shape towards the end face of the connecting channel 311, thereby generating a gap with the inner wall of the connecting channel 311, removing the shielding of the connecting channel 311 by the deformation portion 322, and realizing the flow of injection liquid from the injection liquid container through the injection needle tube through the connecting channel 311.

[0045] In some other embodiments, the valve core 32 can be driven by a compression spring to move away from the connecting channel 311, so that one end of the valve core 32 away from the bonnet 33 slides away from the connecting channel 311 to open the connecting channel 311; after the limiting piece 34 removes the positioning of the bonnet 33, the compression spring rebounds to drive the valve core 32 to move towards the connecting channel 311 to re-shield the connecting channel 311.

[0046] In the present embodiment, the connecting channel 311 comprises a first channel 3111 and a second channel 3112, the length direction of the first channel 3111 is the same as the length direction of the pipe body 1, the length direction of the second channel 3112 is perpendicular to the length direction of the pipe body 1, the diameter of the first channel 3111 is smaller than the diameter of the second channel 3112, and the diameter of the second channel 3112 is smaller than the diameter of the valve core 32. One end of the first channel 3111 and one end of the second channel 3112 are communicated, the other end of the first channel 3111 and the other end of the second channel 3112 are both communicated with the pipe body 1, the deformation portion 322 of the valve core 32 is located at the connection between the first channel 3111 and the second channel 3112, and the deformation portion 322 simultaneously shields the first channel 3111 and the second channel 3112. It can be understood that the peripheral wall of the deformation portion 322 shields the first channel 3111, the bottom wall of the deformation portion 322 shields the second channel 3112, and the valve core 32 simultaneously controls the first channel 3111 and the second channel 3112, which can prevent single-point failure from causing the entire valve core 32 to fail to shield the connecting channel 311, thereby increasing the stability and reliability of the connecting pipe.

[0047] In order to enhance the shielding effect of the valve core 32 on the connecting channel 311, the safety valve 3 further comprises a cover body 35, the cover body 35 is fixedly connected with the valve seat 31, the cover body 35 is arranged in the bonnet 33 and is in sliding cooperation with the bonnet 33, the cover body 35 is located on the side of the deformation portion 322 away from the connecting channel 311, and the cover body 35 abuts against the deformation portion 322 and deforms synchronously with the deformation portion 322. In the present embodiment, the cover body 35 and the valve core 32 are made of the same material, in order to enhance the installation stability of the cover body 35, the valve seat 31 is provided with a connecting seat, the cover body 35 is fixedly connected with the connecting seat, and the outer peripheral wall of the connecting seat is provided with a limiting ring, the limiting ring increases the friction force between the cover body 35 and the connecting seat, and further enhances the installation stability of the cover body 35.

[0048] Referring to Figure 2 and Figure 3 The limiting piece 34 includes a vertical plate 341, a magnetic baffle 342, and an electromagnet 343 arranged at one end of the vertical plate 341. The vertical plate 341 and the magnetic baffle 342 are both fixed to the valve seat 31. The electromagnet 343 is located at the end of the vertical plate 341 away from the valve seat 31. The electromagnet 343 is electrically connected to the sensing assembly. When the electromagnet 343 does not receive an electrical signal from the sensing assembly, the electromagnet 343 is not powered, the magnetic baffle 342 is in a normal state, the bonnet 33 moves to contact and clamp with the magnetic baffle 342, and the pipe body 1 is in communication with the connecting channel 311. When the electromagnet 343 receives an electrical signal from the sensing assembly, the electromagnet 343 is powered, the free end of the magnetic baffle 342 is magnetically attracted to the electromagnet 343, the magnetic baffle 342 is in a bent state, the magnetic baffle 342 releases the clamping and limiting of the bonnet 33, so that the valve core 32 blocks the connecting channel 311. It can be understood that when the first sensor 21 or the second sensor 22 sends an electrical signal to the electromagnet 343, the electromagnet 343 is powered, so that the magnetic baffle 342 changes from the normal state to the bent state, to release the limiting of the bonnet 33, so that the valve core 32 re-blocks the connecting channel 311, and the safety valve 3 blocks the pipe body 1, and the effect of prohibiting the injection liquid to continue to flow.

[0049] Specifically, the magnetic baffle 342 is located between the vertical plate 341 and the bonnet 33. The vertical plate 341 and the magnetic baffle 342 have a deformation gap for the bonnet 33 and the magnetic baffle 342 to release the clamping. The bonnet 33 is provided with a clamping block 331 corresponding to the peripheral wall of the magnetic baffle 342. The magnetic baffle 342 is provided with an avoidance groove 3421 for avoiding the clamping block 331 and a clamping groove 3422 for clamping with the clamping block 331 at one end close to the valve seat 31. The bonnet 33 moves away from the pipe body 1 to move the clamping block 331 from the avoidance groove 3421 to the clamping groove 3422.

[0050] Before injection, the valve cap 33 is pulled towards the direction away from the tube body 1, the valve cap 33 moves from the avoiding groove 3421 to the clamping groove 3422, the clamping block 331 and the clamping groove 3422 are clamped to each other to position and fix the position of the valve cap 33, the valve cap 33 continuously applies force to the valve core 32 to make the valve core 32 deform to keep the state of opening the connection channel 311, and the injection liquid flows through the injection needle tube from the injection liquid container. When the first sensor 21 detects that the abnormal pressure value is generated in the tube body 1, or the second sensor 22 detects that the air bubble flows in the tube body 1, the first sensor 21 or the second sensor 22 sends the electric signal to the electromagnet 343, the electromagnet 343 is energized, the magnetic baffle 342 is magnetically attracted to the electromagnet 343, the free end of the magnetic baffle 342 moves towards the vertical plate 341 to change the magnetic baffle 342 from the normal state to the bent state, the magnetic baffle 342 in the bent state increases the deformation gap, the clamping block 331 is separated from the clamping groove 3422 to release the positioning of the valve cap 33, and the valve cap 33 releases the force on the valve core 32, the valve core 32 restores to the original state and re-blocks the connection channel 311 to block the continuous flow of the injection liquid, and the valve cap 33 moves towards the tube body 1 to reset under the resilience of the valve core 32.

[0051] The end surface of the vertical plate 341 away from the magnetic baffle 342 is provided with a prompt light 344, the prompt light 344 is preferably an LED light, the prompt light 344 is used for flickering red light when the electromagnet 343 is energized, visual feedback is performed when the electromagnet 343 is energized, it is indicated that the electromagnet 343 is in the energized state and the working state, at this time the limiting piece 34 releases the positioning of the valve cap 33, the deformed part 322 blocks the connection channel 311 to realize the closing of the safety valve 3, and the continuous flow of the injection liquid is blocked. The state change of the prompt light 344 represents the change of the working state of the electromagnet 343, which plays a role of directly prompting or indicating the opening and closing state of the safety valve 3 for medical staff and users.

[0052] In order to provide instant feedback to medical staff, so as to take measures quickly and ensure the safety of patients, the injection connecting tube further comprises an alarm assembly for issuing an alarm, the first sensor 21 and the second sensor 22 are electrically connected with the alarm assembly. When the first sensor 21 detects that the abnormal pressure value is generated in the tube body 1, or the second sensor 22 detects that the air bubble flows in the tube body 1, the alarm assembly will immediately issue an alarm to remind the medical staff. Specifically, the alarm assembly comprises a buzzer for issuing a sound signal and an alarm light for issuing a light signal, the buzzer and the alarm light are electrically connected with the first sensor 21 and the second sensor 22, when the first sensor 21 or the second sensor 22 detects the abnormal condition, the alarm is issued in two ways of sound and light to remind the medical staff to handle.

[0053] The above-described embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit the present application; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features can be replaced by equivalent replacements; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An injection connection tube, characterized by, The application relates to a safety valve for a syringe, which comprises a pipe body, an inductive assembly and a safety valve. The pipe body is used for connecting with a syringe needle and a syringe liquid container. The inductive assembly comprises a first sensor arranged on the pipe body and close to the end of the syringe needle, which is used for measuring the pressure in a blood vessel during injection and feeding back abnormal pressure values. The safety valve is arranged on the pipe body and is used for connecting or blocking the pipe body. The safety valve is electrically connected with the first sensor, and the first sensor converts abnormal pressure values into electric signals and feeds back the electric signals to the safety valve so as to block the pipe body. The safety valve comprises a valve seat, a valve core, a valve cap, a cover and a limiting piece. The valve seat is provided with a connecting channel, the two ends of the connecting channel are connected with the pipe body, one end of the valve core blocks the connecting channel, the other end of the valve core is connected with the valve cap, the valve cap moves away from the pipe body and is in contact with the limiting piece to position the valve cap, and the valve cap makes the valve core open the connecting channel to allow the syringe liquid to flow. The valve core comprises a connecting part and a deformation part, one end of the connecting part away from the valve cap is located in the center of the deformation part, the valve cap drives the connecting part to move away from the connecting channel, the deformation part is deformed to form a gap with the inner wall of the connecting channel, and the deformation part unblocks the connecting channel. The cover is arranged in the valve cap and is in sliding fit with the valve cap.

2. The injection connector tube according to claim 1, wherein The cover is located on the side of the deformation part away from the connecting channel, the cover presses the deformation part and is deformed synchronously with the deformation part. The limiting piece comprises a vertical plate, a magnetic baffle and an electromagnet arranged on one end of the vertical plate. The vertical plate and the magnetic baffle are fixed on the valve seat, and the electromagnet is electrically connected with the inductive assembly. When the electromagnet does not receive the electric signal of the inductive assembly, the electromagnet is not electrified, the magnetic baffle is in a normal state, the valve cap is in contact with and clamped by the magnetic baffle, and the pipe body is connected with the connecting channel. When the electromagnet receives the electric signal of the inductive assembly, the electromagnet is electrified, the free end of the magnetic baffle is magnetically attracted to the electromagnet, the magnetic baffle is in a bent state, the magnetic baffle unblocks the clamping of the valve cap, and the valve core blocks the connecting channel. The valve cap is provided with a clamping block corresponding to the peripheral wall of the magnetic baffle, one end of the magnetic baffle close to the valve seat is provided with an avoiding groove for avoiding the clamping block and a clamping groove for clamping the clamping block, and the valve cap moves away from the pipe body to make the clamping block move from the avoiding groove to the clamping groove. The inductive assembly further comprises a second sensor for detecting whether there is air bubble flowing in the pipe body. The second sensor is arranged on the pipe body and close to the end of the syringe liquid container, and is electrically connected with the safety valve. The second sensor feeds back the electric signal of detecting air bubble to the safety valve to block the pipe body.

3. A spike according to claim 2, wherein The alarm component is used for sending an alarm, and the first sensor and the second sensor are electrically connected with the alarm component.

4. A spike according to claim 3, wherein The alarm component comprises a buzzer and an alarm lamp, and the buzzer and the alarm lamp are electrically connected with the first sensor and the second sensor.

5. The injection connector tube of claim 2, wherein The pipe body is provided with a connecting male head and a connecting female head, the connecting male head is fixedly installed at one end of the pipe body, and the connecting male head is used for connecting an injection needle and is close to the first sensor; the connecting female head is fixedly installed at the other end of the pipe body, and the connecting female head is used for connecting an injection liquid container and is close to the second sensor.

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