Injection connecting pipe

Abstract

The invention belongs to the technical field of medical instruments, and discloses an injection connecting tube which comprises a tube body, and the two ends of the tube body are used for being connected with an injection needle and an injection container respectively. The sensing assembly comprises a first sensor, and the first sensor is arranged at the end, close to the injection needle, of the tube body so as to measure the pressure in the blood vessel in the injection process and feed back an abnormal pressure value; the safety valve is arranged on the pipe body and used for communicating 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 electric signal and feeds the electric signal back to the safety valve so that the safety valve can block the pipe body. The safety valve can be rapidly and timely closed through the sensing assembly, the safety of a patient is improved, the possibility of medical accidents is reduced, and meanwhile the working efficiency of medical staff is improved.

Description

Technical Field

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

[0002] Contrast agent injection is an indispensable part of medical imaging diagnosis, especially in angiography, CT scan, MRI and other examinations. In the monitoring of tumors, vascular diseases, etc., the use of contrast agents significantly improves the visibility of the lesion area, obtains clearer images of blood vessels and tissues, and thus more accurately identifies and evaluates lesions, tracks the progression of the disease and the effect of treatment.

[0003] Before injecting the contrast agent, the medical staff will puncture the vein at the target location of the patient and inject the contrast agent into the blood vessel through a syringe with an injection needle. During the puncture process, if the contrast agent is injected into the tissue outside the blood vessel, it may cause an inflammatory reaction in the local tissue, resulting in redness, swelling, pain and tenderness. In severe cases, the injection site will feel severe swelling and pain, and even cause tissue necrosis, causing patient dissatisfaction and even medical disputes. In the prior art, contrast agents require manual operation of the injection syringe, and medical staff rely on experience to adjust the injection head for puncture to reduce the occurrence of this problem. The risk of human error cannot be avoided, so the safety is low, and it also affects the work efficiency of medical staff. Summary of the invention

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

[0005] The present application provides an injection connecting tube adopting the following technical solution:

[0006] An injection connecting tube, comprising:

[0007] A tube body, the two ends of which are respectively used to connect with the injection needle and the injection liquid container;

[0008] A sensing component, the sensing component comprising a first sensor, the first sensor being disposed at one end of the tube body close to the injection needle to measure the pressure in the blood vessel during the injection process and to provide feedback on abnormal pressure values;

[0009] A safety valve is arranged on the pipe body and is used to connect or block the pipe body. The safety valve is electrically connected to the first sensor. The first sensor converts an abnormal pressure value into an electrical signal and feeds it back to the safety valve so that the safety valve blocks the pipe body.

[0010] Optionally, the sensing component also includes a second sensor for detecting whether there are bubbles flowing through the tube body, the second sensor is arranged on the tube body and close to one end of the injection liquid container, the second sensor is electrically connected to the safety valve, and the second sensor feeds back an electrical signal of detecting bubbles to the safety valve so that the safety valve blocks the tube body.

[0011] Optionally, the safety valve includes a valve seat, a valve core, a valve bonnet and a limit member, the valve seat is provided with a connecting channel, both ends of the connecting channel are connected to the tube body, one end of the valve core blocks the connecting channel, the other end of the valve core is connected to the valve bonnet, the valve bonnet moves in a direction away from the tube body and contacts the limit member to position the valve bonnet, and the valve bonnet enables the valve core to open the connecting channel for the injection liquid to flow.

[0012] Optionally, the valve core includes a connecting portion and a deforming portion for connecting to the valve bonnet, and one end of the connecting portion away from the valve bonnet is located at the center of the deforming portion. Movement of the valve bonnet drives the connecting portion to move away from the connecting channel, so that the deforming portion is deformed to create a gap with the inner wall of the connecting channel, thereby removing the obstruction of the connecting channel by the deforming portion.

[0013] Optionally, the safety valve also includes a cover body fixedly connected to the valve seat, the cover body is arranged in the valve cap and slidingly cooperates with the valve cap, the cover body is located on the side of the deformation portion away from the connecting channel, the cover body presses against the deformation portion and deforms synchronously with the deformation portion.

[0014] Optionally, the position limiting member includes a vertical plate, a magnetic baffle, and an electromagnet disposed at one end of the vertical plate, the vertical plate and the magnetic baffle are both fixed to the valve seat, and the electromagnet is electrically connected to the induction component;

[0015] When the electromagnet does not receive the electrical signal from the sensing component, the electromagnet is not energized, the magnetic baffle is in a normal state, the valve cap moves to contact and engage with the magnetic baffle, and the tube body is connected to the connecting channel; when the electromagnet receives the electrical signal from the sensing component, the electromagnet is energized, the free end of the magnetic baffle is magnetically attracted to the electromagnet, the magnetic baffle is in a bent state, and the magnetic baffle releases the clamping limit on the valve cap to allow the valve core to block the connecting channel.

[0016] Optionally, the valve cap is provided with a clamping block on the peripheral wall corresponding to the magnetic baffle plate, and the end of the magnetic baffle plate close to the valve seat is provided with an avoidance groove for avoiding the clamping block and a clamping groove clamped with the clamping block, and the valve cap moves away from the tube body so that the clamping block moves from the avoidance groove to the clamping groove.

[0017] Optionally, it further includes an alarm component for issuing an alarm, and the first sensor and the second sensor are both electrically connected to the alarm component.

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

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

[0020] It can be seen from the above technical solutions that the embodiments of the present application have the following advantages:

[0021] 1. Determine whether the injection needle is correctly located in the blood vessel by the change in pressure value. If the first sensor measures an abnormal pressure value generated in the tube body, that is, a rapidly increasing pressure value or a pressure value exceeding a preset pressure value, the first sensor transmits an electrical signal to the safety valve. The safety valve receives the electrical signal from the first sensor and responds quickly to block the tube body, which can immediately prohibit the injection liquid from continuing to flow to the patient through the injection needle, thereby avoiding leakage of the injection liquid in the patient's body due to insufficient proficiency or operational errors of medical staff, thereby improving the safety of patients and reducing the possibility of medical accidents. At the same time, it omits the operation of the connecting tube by medical staff, thereby improving the work efficiency of medical staff.

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

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0024] Figure 1 This is a schematic diagram of the overall structure of an injection connecting tube disclosed in an embodiment of the present application;

[0025] Figure 2 This is a structural schematic diagram of an injection connecting pipe and a safety valve disclosed in an embodiment of the present application;

[0026] Figure 3 This is a structural cross-sectional view of an injection connecting pipe highlighting a safety valve disclosed in an embodiment of the present application.

[0027] Description of reference numerals:

[0028] 1. Tube body; 11. Male connector; 12. Female connector; 2. Sensing 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 member; 341. Vertical plate; 342. Magnetic baffle; 3421. Avoidance groove; 3422. Clamping groove; 343. Electromagnet; 344. Indicator light; 35. Cover; 4. Data cable; 5. Connecting connector. DETAILED DESCRIPTION

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

[0030] An embodiment of the present application provides an injection connecting tube for injecting contrast agents, which improves the safety of patients, reduces the possibility of medical accidents, and improves the work efficiency of medical staff. The injection connecting tube is also suitable for the infusion of common drugs or anesthetic drugs.

[0031] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only embodiments of a part of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0032] The terms "first", "second", "third", "fourth", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0033] Before injecting contrast agent, medical staff will puncture the vein at the target location of the patient and inject the contrast agent into the blood vessel through a syringe with an injection needle. If the injection needle is correctly located in the blood vessel, the pressure in the syringe will slowly increase when injecting the contrast agent; when the injection needle is located in the tissue outside the blood vessel, the pressure in the syringe will suddenly increase when injecting the contrast agent. However, during the puncture process, the injection needle may penetrate the blood vessel or puncture into the muscle tissue. If the contrast agent is injected into the tissue outside the blood vessel, it may cause an inflammatory reaction in the local tissue, resulting in redness, swelling, pain and tenderness. In severe cases, the injection site will feel severe swelling and pain, and even cause tissue necrosis. In the prior art, contrast agents require manual operation of the injection syringe, and rely on medical staff to adjust the injection head for puncture based on experience to reduce the occurrence of this problem. The risk caused by human error cannot be avoided, the safety is low, and the work efficiency of medical staff is also affected.

[0034] In order to solve the above technical problems, the present application provides an injection connecting tube, please refer to Figure 1 , is an embodiment of the injection connecting tube of the present application, comprising a tube body 1, a sensing component and a safety valve 3. The two ends of the tube body 1 are respectively used to connect with the injection needle and the injection liquid container. The sensing component and the safety valve 3 are both arranged on the tube body 1. The sensing component is electrically connected to the safety valve 3. The safety valve 3 is used to connect or block the tube body 1. The injection liquid flows from the injection liquid container through the tube body 1 to the injection needle. The sensing component is used to measure various data during the injection process in the tube body 1, and convert the abnormal detection data into an electrical signal and feed it back to the safety valve 3 so that the safety valve 3 blocks the tube body 1 and prohibits the injection liquid from continuing to flow to the patient.

[0035] See also Figure 1The tube body 1 is a transparent flexible tube, usually made of materials such as PVC or TPU. During the infusion process, the transparent flexible tube can be bent and adapted to various occasions to adjust its shape and position due to its softness. It has high flexibility, making it easier to insert and position the needle, and can keep the pipeline unobstructed during the infusion process; its transparency makes it easy for medical staff to observe the flow of the liquid medicine in the infusion tube. In some other embodiments, the tube body 1 can be a braided composite tube, which increases the burst strength and improves safety performance.

[0036] The tube body 1 is provided with a male connector 11 and a female connector 12. The male connector 11 is fixedly mounted at one end of the tube body 1 and is used to connect an injection needle. The female connector 12 is fixedly mounted at the other end of the tube body 1 and is used to connect an injection container. The male connector 11 and the female connector 12 enhance the installation stability of the injection needle and the injection container. Both the male connector 11 and the female connector 12 use universal connectors, which are not limited to the injection of contrast agents, but can also be used for the infusion of common drugs or anesthetic drugs.

[0037] The sensing component includes a first sensor 21, which is preferably a high-precision pressure sensor. The first sensor 21 is disposed at one end of the tube body 1 close to the injection needle to measure the pressure in the blood vessel during the injection process and to provide feedback on abnormal pressure values. The first sensor 21 converts the abnormal pressure value into an electrical signal and feeds it back to the safety valve 3 so that the safety valve 3 blocks the tube body 1.

[0038] The abnormal pressure value is a rapidly increasing 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 increases slowly when the injection liquid is injected, and the increased pressure value 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 increases suddenly when the injection liquid is injected. The change in the pressure value can be used to determine whether the injection needle is correctly located in the blood vessel. If the first sensor 21 measures the abnormal pressure value generated in the tube body 1, that is, the rapidly increasing pressure value or the pressure value exceeding the preset pressure value, the first sensor 21 transmits an electrical signal to the safety valve 3. The safety valve 3 receives the electrical signal of the first sensor 21 and responds quickly to block the tube body 1, which can immediately prohibit the injection liquid from continuing to flow to the patient through the injection needle, avoiding the leakage of the injection liquid in the patient's body due to the lack of proficiency of medical staff or operational errors, thereby improving the safety of patients, reducing the possibility of medical accidents, reducing the operation of the connecting tube by medical staff, and improving the work efficiency of medical staff.

[0039] Medical staff usually exhaust air before injecting the injection to prevent air from being retained in the tube body 1 and then entering the blood vessels through the injection needle. Air bubbles entering the blood vessels may cause serious complications such as vascular obstruction and air embolism. The elimination process is complicated and risky, and may require additional medical intervention. Although medical staff will exhaust air, it is difficult to detect the presence of tiny bubbles with the naked eye, so it is necessary to monitor the tube body 1 for bubble detection. Furthermore, the sensing component also includes a second sensor 22 for detecting whether there are bubbles flowing through the tube body 1. The second sensor 22 is preferably an optical bubble sensor. The second sensor 22 is arranged on the tube body 1 and close to one end of the injection container. The injection and bubbles first pass through the second sensor 22, which is conducive to more rapid detection of bubbles. The second sensor 22 is electrically connected to the safety valve 3. The second sensor 22 will feed back the electrical signal of the bubble detection to the safety valve 3 so that the safety valve 3 blocks the tube body 1 and prohibits the injection in the tube body 1 from flowing toward the injection needle. When the second sensor 22 detects that bubbles are flowing through the tube body 1, the second sensor 22 sends an electrical signal to the safety valve 3. The safety valve 3 receives the electrical signal sent by the second sensor 22 and responds quickly to block the tube body 1, thereby preventing bubbles from entering the patient's blood vessels, reducing the risk of causing discomfort, complications or air embolism to the patient, and improving the patient's safety.

[0040] See also Figure 1 and Figure 2 The safety valve 3 is arranged in the middle of the tube body 1 and between the first sensor 21 and the second sensor 22. The injection liquid is detected by the second sensor 22. If there are bubbles mixed in the injection liquid, the second sensor 22 sends an electrical signal to the safety valve 3 so that the safety valve 3 blocks the tube body 1 and prohibits the injection liquid from flowing to the injection needle. If there are no bubbles flowing in the injection liquid, the second sensor 22 does not send an electrical signal, and the injection liquid flows through the patient's blood vessels through the safety valve 3 and the tube body 1 through the injection needle. If during the injection process, the first sensor 21 measures that the pressure in the patient's blood vessels rises rapidly or exceeds the preset pressure value, the first sensor 21 sends an electrical signal to the safety valve 3 so that the safety valve 3 blocks the tube body 1 and prohibits the injection liquid from flowing to the patient. If during the injection process, the first sensor 21 measures that the pressure in the patient's blood vessels rises slowly and does not exceed the preset pressure value, the first sensor 21 does not send an electrical signal, and the injection liquid flows through the patient's blood vessels through the injection needle.

[0041] It is understandable that the first sensor 21, the second sensor 22 and the safety valve 3 in the connecting tube of the present 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, and a connecting connector 5 is provided at one end of the data line 4 to transmit electrical signals. Medical staff can choose the first sensor 21 or the second sensor 22 to combine with the safety valve 3 according to actual conditions, thereby reducing costs and patient burdens while meeting needs; at the same time, the simple and intuitive design allows medical staff to quickly master the operation method without complicated settings or additional training, thereby improving work efficiency. The connecting tube of the present application has the advantages of easy operation, quick installation, strong versatility, safety for patients, and low cost.

[0042] See also Figure 2 and Figure 3 The safety valve 3 includes a valve seat 31, a valve core 32, a valve cap 33 and a stopper 34. The valve seat 31 is sleeved on the outer peripheral wall of the tube body 1 and is fixedly connected to the tube body 1. The valve seat 31 is provided with a connecting channel 311. Both ends of the connecting channel 311 are connected to the tube body 1. One end of the valve core 32 blocks the connecting channel 311. The other end of the valve core 32 is connected to the valve cap 33. The valve cap 33 moves in a direction away from the tube body 1 and contacts with the stopper 34 to position the valve cap 33. The valve cap 33 enables the valve core 32 to open the connecting channel 311 for the injection liquid to flow. Before using the connecting tube for injection, pull the valve cap 33 in a direction away from the tube body 1. The valve cap 33 moves to the stopper 34 and is positioned by the stopper 34 to fix the position of the valve cap 33. During the movement of the valve cap 33, the valve core 32 is driven to move so that the valve core 32 opens the connecting channel 311. The injection liquid flows from the injection liquid container through the injection needle through the connecting channel 311.

[0043] See also Figure 3 Specifically, the valve core 32 is made of silicone material, and the valve core 32 includes a connecting portion 321 for connecting the valve cap 33 and a deforming portion 322 that generates deformation. The connecting portion 321 and the deforming portion 322 are integrally formed, and one end of the connecting portion 321 away from the valve cap 33 is located at the center of the deforming portion 322. The movement of the valve cap 33 drives the connecting portion 321 to move away from the connecting channel 311, so that the deforming portion 322 is deformed to generate a gap with the inner wall of the connecting channel 311, and the blocking of the connecting channel 311 by the deforming portion 322 is released. After the stopper 34 releases the positioning of the valve cap 33, the valve cap 33 is in a free state and the force acting on the connecting portion 321 and the deforming portion 322 is released. The deforming portion 322 restores its shape and blocks the connecting channel 311 again. Under the action of the rebound force of the deforming portion 322 and the connecting portion 321, the valve cap 33 moves toward the pipe body 1 to return to its original position.

[0044] It can be understood that the valve cap 33 applies an upward force to the connecting portion 321, and the upward force causes the deformation portion 322 to deform with the center as the origin, and the severity of the deformation gradually slows down toward the edge of the connecting portion 321, so that the end face of the connecting portion 321 facing the connecting channel 311 is concave, thereby creating a gap with the inner wall of the connecting channel 311, thereby removing the obstruction of the connecting channel 311 by the deformation portion 322, and allowing the injection liquid to flow 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 moved toward a direction away from the connecting channel 311 by a compression spring, so that the end of the valve core 32 away from the valve cap 33 slides toward a direction away from the connecting channel 311, thereby opening the connecting channel 311; after the limit member 34 releases the positioning of the valve cap 33, the compression spring rebounds and drives the valve core 32 to move toward the connecting channel 311 to re-cover the connecting channel 311.

[0046] In this embodiment, the connecting channel 311 includes 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 tube body 1, and the length direction of the second channel 3112 is perpendicular to the length direction of the tube 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 is connected to one end of the second channel 3112, and the other end of the first channel 3111 and the other end of the second channel 3112 are both connected to the tube body 1. The deformation part 322 of the valve core 32 is located at the connection between the first channel 3111 and the second channel 3112, and the deformation part 322 blocks the first channel 3111 and the second channel 3112 at the same time. It can be understood that the surrounding wall of the deformation part 322 blocks the first channel 3111, the bottom wall of the deformation part 322 blocks the second channel 3112, and the valve core 32 controls the first channel 3111 and the second channel 3112 at the same time, which can prevent the failure of the entire valve core 32 to block the connecting channel 311 due to a single point failure, 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 passage 311, the safety valve 3 further comprises a cover 35, which is fixedly connected to the valve seat 31, is disposed in the valve cap 33 and is slidably matched with the valve cap 33, and is located on the side of the deformation portion 322 away from the connecting passage 311, and the cover 35 presses against the deformation portion 322 and deforms synchronously with the deformation portion 322. In this embodiment, the cover 35 and the valve core 32 are made of the same material, and in order to enhance the installation stability of the cover 35, the valve seat 31 is provided with a connecting seat, and the cover 35 is fixedly connected to the connecting seat, and a limiting ring is provided on the outer peripheral wall of the connecting seat, and the limiting ring increases the friction between the cover 35 and the connecting seat, further enhancing the installation stability of the cover 35.

[0048] See also Figure 2 and Figure 3 The limit member 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 one end of the vertical plate 341 away from the valve seat 31, and the electromagnet 343 is electrically connected to the sensing component; when the electromagnet 343 does not receive an electrical signal from the sensing component, the electromagnet 343 is not energized, the magnetic baffle 342 is in a normal state, the valve cap 33 moves to contact and engage with the magnetic baffle 342, and the tube body 1 is connected to the connecting channel 311; when the electromagnet 343 receives an electrical signal from the sensing component, the electromagnet 343 is energized, the free end of the magnetic baffle 342 is magnetically attracted to the electromagnet 343, the magnetic baffle 342 is in a bent state, and the magnetic baffle 342 releases the clamping limit of the valve cap 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 energized to cause the magnetic baffle 342 to change from a normal state to a bent state, thereby releasing the limit on the valve cap 33 and allowing the valve core 32 to re-block the connecting channel 311, thereby achieving the effect of the safety valve 3 blocking the tube body 1 and prohibiting the injection liquid from continuing to flow.

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

[0050] Before using the connecting tube for injection, pull the valve cap 33 in the direction away from the tube body 1, and the valve cap 33 moves from the avoidance groove 3421 to the clamping groove 3422, and the clamping block 331 and the clamping groove 3422 are mutually clamped to position and fix the position of the valve cap 33. The valve cap 33 continuously applies force to the valve core 32 to cause the valve core 32 to deform to keep the connecting channel 311 open, and the injection liquid flows from the injection liquid container through the injection needle through the connecting channel 311. When the first sensor 21 detects an abnormal pressure value in the tube body 1, or the second sensor 22 detects bubbles flowing through the tube body 1, the first sensor 21 or the second sensor 22 sends an electrical signal to the electromagnet 343, and the electromagnet 343 is energized, so that the magnetic baffle 342 and the electromagnet 343 are magnetically attracted to each other, and the free end of the magnetic baffle 342 moves toward the vertical plate 341 to change the magnetic baffle 342 from a normal state to a bent state. The magnetic baffle 342 is bent to increase the deformation gap, so that the clamping block 331 is disengaged from the clamping groove 3422 to release the positioning of the valve cap 33. At the same time, the valve cap 33 releases the force on the valve core 32, and the valve core 32 returns to its original state and re-blocks the connecting channel 311 to prevent the injection liquid from continuing to flow. The valve cap 33 moves toward the tube body 1 under the rebound force of the valve core 32 to return to its position.

[0051] The end surface of the vertical plate 341 away from the magnetic baffle 342 is provided with a warning light 344, which is preferably an LED light. The warning light 344 is used to flash red light when the electromagnet 343 is energized, and provide visual feedback when the electromagnet 343 is energized, indicating that the electromagnet 343 is in the energized state and in the working state. At this time, the limiter 34 releases the positioning of the valve cap 33, and the deformation part 322 blocks the connecting channel 311 to achieve the closure of the safety valve 3, blocking the injection liquid from continuing to flow. The state change of the warning light 344 represents the change of the working state of the electromagnet 343, which plays a role in intuitively reminding or indicating the opening and closing state of the safety valve 3 to medical staff and users.

[0052] In order to provide immediate feedback to medical staff so that they can take prompt measures to ensure the safety of the patient, the injection connection tube also includes an alarm component for sounding an alarm, and the first sensor 21 and the second sensor 22 are both electrically connected to the alarm component. When the first sensor 21 detects an abnormal pressure value in the tube body 1, or the second sensor 22 detects bubbles flowing through the tube body 1, the alarm component will immediately sound an alarm to remind the medical staff. Specifically, the alarm component includes a buzzer for sounding a sound signal and an alarm light for lighting a light signal. The buzzer and the alarm light are both electrically connected to the first sensor 21 and the second sensor 22. When the first sensor 21 or the second sensor 22 detects an abnormal situation, an alarm is sounded through sound and light signals to remind the medical staff to handle it.

[0053] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An injection connecting tube, characterized in that: include: A tube body, the two ends of which are respectively used to connect with the injection needle and the injection liquid container; A sensing component, the sensing component comprising a first sensor, the first sensor being disposed at one end of the tube body close to the injection needle to measure the pressure in the blood vessel during the injection process and to provide feedback on abnormal pressure values; A safety valve is arranged on the pipe body and is used to connect or block the pipe body. The safety valve is electrically connected to the first sensor. The first sensor converts an abnormal pressure value into an electrical signal and feeds it back to the safety valve so that the safety valve blocks the pipe body.

2. An injection connecting tube according to claim 1, characterized in that: The sensing component also includes a second sensor for detecting whether there are bubbles flowing through the tube body. The second sensor is arranged on the tube body and close to one end of the injection liquid container. The second sensor is electrically connected to the safety valve. The second sensor feeds back an electrical signal detecting the presence of bubbles to the safety valve so that the safety valve blocks the tube body.

3. An injection connecting tube according to claim 1 or 2, characterized in that: The safety valve includes a valve seat, a valve core, a valve bonnet and a limit member. The valve seat is provided with a connecting channel. Both ends of the connecting channel are connected to the tube body. One end of the valve core blocks the connecting channel. The other end of the valve core is connected to the valve bonnet. The valve bonnet moves in a direction away from the tube body and contacts the limit member to position the valve bonnet. The valve bonnet enables the valve core to open the connecting channel for the injection liquid to flow.

4. An injection connecting tube according to claim 3, characterized in that: The valve core includes a connecting portion and a deforming portion for connecting to the valve bonnet, wherein one end of the connecting portion away from the valve bonnet is located at the center of the deforming portion, and the movement of the valve bonnet drives the connecting portion to move away from the connecting channel, so that the deforming portion is deformed to create a gap with the inner wall of the connecting channel, thereby removing the obstruction of the connecting channel by the deforming portion.

5. An injection connecting tube according to claim 4, characterized in that: The safety valve also includes a cover body fixedly connected to the valve seat, the cover body is arranged in the valve cap and slidably cooperates with the valve cap, the cover body is located on the side of the deformation part away from the connecting channel, the cover body presses against the deformation part and deforms synchronously with the deformation part.

6. An injection connecting tube according to claim 3, characterized in that: The position limiting member includes a vertical plate, a magnetic baffle, and an electromagnet disposed at one end of the vertical plate, the vertical plate and the magnetic baffle are both fixed to the valve seat, and the electromagnet is electrically connected to the induction component; When the electromagnet does not receive the electrical signal from the sensing component, the electromagnet is not energized, the magnetic baffle is in a normal state, the valve cap moves to contact and engage with the magnetic baffle, and the tube body is connected to the connecting channel; when the electromagnet receives the electrical signal from the sensing component, the electromagnet is energized, the free end of the magnetic baffle is magnetically attracted to the electromagnet, the magnetic baffle is in a bent state, and the magnetic baffle releases the clamping limit on the valve cap to allow the valve core to block the connecting channel.

7. An injection connecting tube according to claim 6, characterized in that: The valve cap is provided with a clamping block on the peripheral wall corresponding to the magnetic baffle plate, and the end of the magnetic baffle plate close to the valve seat is provided with an avoidance groove for avoiding the clamping block and a clamping groove clamped with the clamping block, and the valve cap moves away from the tube body to make the clamping block move from the avoidance groove to the clamping groove.

8. An injection connecting tube according to claim 2, characterized in that: It also includes an alarm component for issuing an alarm, and the first sensor and the second sensor are both electrically connected to the alarm component.

9. An injection connecting tube according to claim 8, characterized in that: The alarm component includes a buzzer and an alarm light, and both the buzzer and the alarm light are electrically connected to the first sensor and the second sensor.

10. An injection connecting tube according to claim 2, characterized in that: The tube body is provided with a male connector and a female connector. The male connector is fixedly installed at one end of the tube body, and the male connector is used to connect to an injection needle and is close to the first sensor; the female connector is fixedly installed at the other end of the tube body, and the female connector is used to connect to an injection liquid container and is close to the second sensor.

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