Injection device and medical instrument

Abstract

The utility model provides a kind of injection device and medical instrument, it is related to medical equipment technical field.The injection device includes installation main body, syringe, movable assembly, elastic member and sensing device.Installation main body is equipped with installation cavity.Syringe is detachably loaded into inside installation cavity.Movable assembly is movably connected in installation main body, and it is resisted in syringe;Movable assembly has trigger end.Elastic member is connected in installation main body, and elastic member is resisted in movable assembly end away from syringe.Sensing device is connected in installation main body, and sensing device has for with trigger end matching sensing cavity;Trigger end is inserted into sensing cavity.The utility model provides the medical instrument using above-mentioned injection device.The injection device and medical instrument provided by the utility model can improve the technical problem that the existing technology is influenced by the in-place detection of syringe inaccurate, which leads to the influence of dose judgment and further leads to the influence of treatment diagnosis.

Description

Technical Field

[0001] This utility model relates to the field of medical equipment technology, and more specifically, to an injection device and a medical instrument. Background Technology

[0002] High-pressure injectors for angiography utilize syringes to inject liquids, while also facilitating syringe installation and removal, resulting in a certain degree of syringe movement after installation. Detecting proper syringe installation is a fundamental requirement. During drug aspiration, the piston moves the syringe barrel backward, triggering a detection device. However, during drug dispensing, the piston moves the syringe forward, causing a certain distance of syringe displacement. Current technology still struggles to detect this displacement, making it difficult to identify. This displacement can sometimes affect the injection dosage and the monitoring of syringe operation, thus impacting treatment and diagnostic outcomes. Utility Model Content

[0003] The technical problem solved by this utility model is how to improve the technical problem in the prior art where inaccurate detection of syringe positioning affects dosage judgment and thus affects treatment diagnosis.

[0004] The embodiments of this utility model can be implemented as follows: This utility model provides an injection device, comprising: The main body of the installation unit has an installation cavity on it; A syringe is detachably inserted into the mounting cavity; A movable component is movably connected to the mounting body and abuts against the syringe; the movable component has a trigger end; An elastic element is connected to the mounting body, and the elastic element abuts against the end of the movable component away from the syringe; A sensing device is connected to the mounting body, the sensing device having a sensing cavity for matching the trigger end; the trigger end extends into the sensing cavity.

[0005] The advantages of the injection device provided by this utility model compared to the prior art include: In this injection device, when the syringe is assembled onto the mounting body, the syringe rests against the movable component, causing the trigger end on the movable component to extend into the sensing cavity. The syringe's proper installation is detected through the response of the trigger end and the sensing device. When the syringe is injected, causing displacement, it moves away from the movable component. At this point, under the elastic recovery of the elastic element, the movable component drives the trigger end out of the sensing cavity. Based on the release of the response of the trigger end and the sensing device, it is possible to accurately determine if the syringe is not properly installed. Therefore, this injection device improves upon the technical problem in existing technologies where inaccurate syringe positioning detection affects dosage judgment and thus treatment diagnosis.

[0006] Optionally, the active component includes a movable part, an adapter, and a trigger; the movable part is movably disposed inside the mounting body; one end of the adapter is connected to the movable part, and the other end extends outside the mounting body; the trigger is connected to the adapter, and one end of the trigger forms the trigger end.

[0007] Optionally, the movable component further includes a sliding sleeve disposed inside the mounting body, and the sliding sleeve has a channel for the movable component to move within it. A groove communicating with the channel is formed on the side wall of the sliding sleeve, and the adapter passes through the groove and is fixedly connected to the movable component.

[0008] Optionally, one end of the elastic element extends into the interior of the movable sleeve and is fitted onto the end of the movable element.

[0009] Optionally, the sensing device includes a mounting base and a sensor; the mounting base is fixedly disposed outside the mounting body, the sensor is connected to the mounting base, and the sensing cavity is disposed on the sensor.

[0010] Optionally, the mounting base has a mounting hole, which is an elongated hole; the mounting hole is used for the connector to pass through and connect to the mounting body to connect the mounting base and the mounting body.

[0011] Optionally, the mounting base includes a first connecting part and a second connecting part, the first connecting part and the second connecting part are connected and set at an included angle; the mounting hole is opened in the first connecting part, the first connecting part is installed on the outside of the mounting body; the sensor is connected to the second connecting part.

[0012] Optionally, the mounting body includes a first carrier, a second carrier, a connecting rod, and a driving device; the first carrier and the second carrier are respectively connected to the two ends of the connecting rod; the syringe is disposed between the first carrier and the second carrier; the driving device is disposed at the end of the second carrier away from the first carrier, and the driving device is tractively connected to the syringe for driving the syringe to advance or withdraw.

[0013] Optionally, the mounting body further includes a protective cover, which is fitted over the outside of the syringe.

[0014] A medical device comprising the aforementioned injection device.

[0015] The medical instrument provided by this utility model adopts the above-mentioned injection device. The beneficial effects of this medical instrument compared with the prior art are the same as the beneficial effects of the above-mentioned injection device compared with the prior art, and will not be repeated here. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a first-view structural schematic diagram of the injection device provided in the embodiments of this application; Figure 2 for Figure 1 Enlarged structural diagram at point A; Figure 3 This is a schematic diagram of the injection device provided in the embodiments of this application from a second perspective; Figure 4 for Figure 3 Enlarged structural diagram at point B; Figure 5 This is a third-view structural schematic diagram of the injection device provided in the embodiments of this application; Figure 6 for Figure 5 A magnified structural diagram at point C.

[0018] Icons: Injection device 10, mounting body 100, first carrier 110, second carrier 120, connecting rod 130, driving device 140, protective cover 150, syringe 200, movable component 300, movable part 310, positioning block 311, adapter 320, trigger part 330, trigger end 331, sliding sleeve 340, limit seat 350, limit groove 351, elastic element 400, sensing device 500, mounting base 510, first connecting part 511, second connecting part 512, sensor 520, sensing cavity 521. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0021] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0023] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0024] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.

[0025] Please refer to the following: Figures 1-6This embodiment provides an injection device 10 and a medical instrument using the injection device 10. The injection device 10 can be used to draw a drug and inject the drug into a target. The medical instrument provided in this embodiment uses the above-mentioned injection device 10. For example, the medical instrument can be an angiography high-pressure injector 200. In this embodiment, the injection device 10 and the medical instrument can improve the technical problem in the prior art where inaccurate detection of the syringe 200's placement affects dosage judgment and thus affects treatment and diagnosis.

[0026] The injection device 10 includes a mounting body 100, a syringe 200, a movable component 300, an elastic element 400, and a sensing device 500. The mounting body 100 has a mounting cavity. The syringe 200 is detachably inserted into the mounting cavity. The movable component 300 is movably connected to the mounting body 100 and abuts against the syringe 200; the movable component 300 has a trigger end 331. The elastic element 400 is connected to the mounting body 100 and abuts against the end of the movable component 300 away from the syringe 200. The sensing device 500 is connected to the mounting body 100 and has a sensing cavity 521 for mating with the trigger end 331; the trigger end 331 extends into the sensing cavity 521.

[0027] It is worth noting that when the syringe 200 is inserted into the mounting cavity, the syringe 200 abuts against the movable component 300, causing the movable component 300 to compress the elastic element 400. When the syringe 200 moves in the direction of disengaging from the movable component 300, the elastic element 400, through its elastic recovery, causes the movable component 300 to move away from the elastic element 400. Simultaneously, as the movable component 300 moves away from the elastic element 400, it simultaneously drives the trigger end 331 out of the sensing cavity 521, disengaging the trigger end 331 from the sensing device 500. This allows for the determination that the installation position of the syringe 200 has changed, enabling timely detection of improper installation.

[0028] In this injection device 10, when the syringe 200 is assembled onto the mounting body 100, the syringe 200 abuts against the movable component 300, causing the trigger end 331 on the movable component 300 to extend into the sensing cavity 521. The installation position detection of the syringe 200 is achieved through the response of the trigger end 331 and the sensing device 500. When the syringe 200 injects and causes displacement of the syringe 200, the syringe 200 moves away from the movable component 300. At this time, under the elastic recovery action of the elastic member 400, the movable component 300 drives the trigger end 331 to disengage from the sensing cavity 521. Based on the release of the response between the trigger end 331 and the sensing device 500, it is possible to accurately determine if the syringe 200 is not installed correctly. Based on this, the injection device 10 improves the technical problem in the prior art where inaccurate detection of the syringe 200's position affects dosage judgment and thus affects treatment diagnosis.

[0029] In other words, the injection device 10 provided in this embodiment can not only provide a positioning prompt when the syringe 200 is assembled, making it easy for the user to determine whether the syringe 200 is installed in place; at the same time, the injection device 10 can also accurately detect whether the syringe 200 is displaced during the injection process, so that the user can promptly determine whether the injection operation will be affected.

[0030] In this embodiment, the active component 300 includes a movable element 310, a connector 320, and a trigger element 330. The movable element 310 is movably disposed inside the mounting body 100. One end of the connector 320 is connected to the movable element 310, and the other end extends outside the mounting body 100. The trigger element 330 is connected to the connector 320, and one end of the trigger element 330 forms a trigger end 331. Correspondingly, the sensing cavity 521 on the sensing device 500 is also located outside the mounting body 100. On the one hand, this facilitates the cooperation between the trigger end 331 and the sensing cavity 521 to achieve the response between the sensing device 500 and the trigger end 331. On the other hand, it also allows the user to easily observe and judge the positional relationship between the trigger end 331 and the sensing cavity 521, thereby facilitating the adjustment of the relative position of the trigger end 331 and the sensing cavity 521, and adjusting the response sensitivity of the trigger end 331 and the sensing device 500.

[0031] Furthermore, the movable component 300 also includes a sliding sleeve 340, which is disposed inside the mounting body 100. The sliding sleeve 340 has a channel for the movable component 310 to move within it, and a groove communicating with the channel is formed on the side wall of the sliding sleeve 340. The adapter 320 passes through the groove and is fixedly connected to the movable component 310. By placing the movable component 310 inside the sliding sleeve 340, the sliding sleeve 340 can guide the movable component 310, ensuring that the movable component 310 moves along a specified path when subjected to force. The groove on the sliding sleeve 340 facilitates the extension of the adapter 320 and also provides sliding guidance to the adapter 320. Therefore, by guiding the movable component 310 through the sliding sleeve 340 and guiding the adapter 320 through the groove, the trigger 330 can be ensured to move along a specified path, improving stability.

[0032] In this embodiment, the movable component 300 further includes a limiting seat 350, which is located outside the mounting body 100 and has a limiting groove 351. The portion of the adapter 320 extending out of the mounting body 100 is located in the limiting groove 351. Therefore, when the movable component 310 slides along the sliding sleeve 340, the adapter 320 simultaneously slides in the limiting groove 351. The limiting groove 351 provides guidance and limiting for the adapter 320, thereby ensuring stable movement of the adapter 320 and, consequently, ensuring that the trigger 330 moves along the designated path.

[0033] In this embodiment, the elastic element 400 is a spring, and one end of the elastic element 400 extends into the movable sleeve and is fitted onto the end of the movable element 310. By extending one end of the elastic element 400 into the sliding sleeve 340, the sliding sleeve 340 can provide a limiting effect on the elastic element 400, preventing it from bending and detaching from its installation position. Simultaneously, it can also prevent the elastic element 400 from bending and failing during compression and extension.

[0034] It is worth noting that, in order to ensure the assembly stability between the elastic member 400 and the movable member 310, a positioning block 311 is protruding from the end of the movable member 310. The cross-sectional area of ​​the positioning block 311 is smaller than that of the movable member 310, thereby forming a stepped structure on the end face of the movable member 310. One end of the elastic member 400 is fitted onto the positioning block 311.

[0035] In this embodiment, the sensing device 500 includes a mounting base 510 and a sensor 520; the mounting base 510 is fixedly disposed outside the mounting body 100, the sensor 520 is connected to the mounting base 510, and a sensing cavity 521 is disposed on the sensor 520. Optionally, the sensor 520 may be a slotted photoelectric sensor, and the groove formed on the slotted photoelectric sensor is the sensing cavity 521.

[0036] Optionally, the mounting base 510 has a mounting hole, which is an elongated hole. The mounting hole allows a connector to pass through and connect to the mounting body 100, thus connecting the mounting base 510 and the mounting body 100. The mounting position of the mounting base 510 varies depending on the position of the connector within the mounting hole. Therefore, the position of the mounting base 510 can be adjusted by corresponding the connector to different positions within the mounting hole, thereby adjusting the relative position of the sensing cavity 521 and the trigger end 331, and adjusting the response sensitivity of the sensing device 500 and the trigger end 331. For example, when the syringe 200 is installed, if the distance of the trigger end 331 into the sensing cavity 521 is adjusted to 3mm, the interaction between the trigger end 331 and the sensing device 500 will be deactivated if the syringe 200 shifts more than 3mm during injection, thus triggering an alarm and allowing the user to determine if the syringe 200 is not properly installed. Advantageously, the aforementioned distance can be adjusted to 1mm. In this case, if the syringe 200 is displaced by more than 1mm during the injection operation, the interaction between the trigger end 331 and the sensing device 500 will be terminated, and an alarm will be triggered. In comparison, the latter (the example where the trigger end 331 extends 1mm) has a higher reaction sensitivity than the former (the example where the trigger end 331 extends 3mm).

[0037] Optionally, in this embodiment, the mounting base 510 includes a first connecting portion 511 and a second connecting portion 512, which are connected and angled together. A mounting hole is formed in the first connecting portion 511, which is mounted on the outside of the mounting body 100. The sensor 520 is connected to the second connecting portion 512. The first connecting portion 511 and the second connecting portion 512 are typically integrally formed, and their cross-section is L-shaped. Based on this, the connection positions of the mounting base 510 and the mounting body 100 and the connection positions of the mounting base 510 and the sensor 520 can be separated, facilitating assembly.

[0038] In this embodiment, the mounting body 100 includes a first support 110, a second support 120, a connecting rod 130, and a driving device 140. The first support 110 and the second support 120 are respectively connected to the two ends of the connecting rod 130. The syringe 200 is disposed between the first support 110 and the second support 120. The driving device 140 is disposed at the end of the second support 120 away from the first support 110, and the driving device 140 is tractively connected to the syringe 200 to drive the syringe 200 to advance or withdraw. An mounting cavity is formed between the first support 110 and the second support 120. The front end of the syringe 200 is fixed on the first support 110, while the movable component 300, the elastic element 400, and the sensing device 500 are all disposed on the second support 120. Furthermore, under the action of the elastic element 400, one end of the movable component 310 can extend from the side of the second support 120 closer to the first support 110, so that the movable component 310 can be held by the syringe 200.

[0039] Furthermore, the mounting body 100 also includes a protective cover 150, which is fitted over the syringe 200. The protective cover 150 provides protection for the syringe 200 and prevents damage to it.

[0040] In summary, in this injection device 10 and medical instrument, when the syringe 200 is assembled onto the mounting body 100, the syringe 200 abuts against the movable component 300, causing the trigger end 331 on the movable component 300 to extend into the sensing cavity 521. The installation position detection of the syringe 200 is achieved through the response of the trigger end 331 and the sensing device 500. When the syringe 200 injects and causes displacement of the syringe 200, the syringe 200 moves away from the movable component 300. At this time, under the elastic recovery action of the elastic member 400, the movable component 300 drives the trigger end 331 to disengage from the sensing cavity 521. Based on the release of the response between the trigger end 331 and the sensing device 500, the situation where the syringe 200 is not installed correctly can be accurately determined. Based on this, the injection device 10 improves the technical problem in the prior art where inaccurate detection of the syringe 200's position affects dosage judgment and thus affects treatment diagnosis.

[0041] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. An injection device (10), characterized in that, include: The mounting body (100) is provided with a mounting cavity; A syringe (200) is detachably inserted into the mounting cavity; A movable component (300) is movably connected to the mounting body (100) and abuts against the syringe (200); the movable component (300) has a trigger end (331). An elastic element (400) is connected to the mounting body (100), and the elastic element (400) abuts against the end of the movable component (300) away from the syringe (200); A sensing device (500) is connected to the mounting body (100), the sensing device (500) having a sensing cavity (521) for matching the trigger end (331); the trigger end (331) extends into the sensing cavity (521).

2. The injection device (10) according to claim 1, characterized in that, The active component (300) includes a movable part (310), a connector (320), and a trigger (330); the movable part (310) is movably disposed inside the mounting body (100); one end of the connector (320) is connected to the movable part (310), and the other end extends to the outside of the mounting body (100); the trigger (330) is connected to the connector (320), and one end of the trigger (330) forms the trigger end (331).

3. The injection device (10) according to claim 2, characterized in that, The movable component (300) further includes a sliding sleeve (340), which is located inside the mounting body (100). The sliding sleeve (340) has a channel for the movable component (310) to move within it. A groove communicating with the channel is provided on the side wall of the sliding sleeve (340). The adapter (320) passes through the groove and is fixedly connected to the movable component (310).

4. The injection device (10) according to claim 3, characterized in that, One end of the elastic element (400) extends into the movable sleeve and is fitted onto the end of the movable element (310).

5. The injection device (10) according to claim 1, characterized in that, The sensing device (500) includes a mounting base (510) and a sensor (520); the mounting base (510) is fixedly disposed outside the mounting body (100), the sensor (520) is connected to the mounting base (510), and the sensing cavity (521) is disposed on the sensor (520).

6. The injection device (10) according to claim 5, characterized in that, The mounting base (510) has a mounting hole, which is an elongated hole; the mounting hole is used for the connector to pass through and connect to the mounting body (100) to connect the mounting base (510) and the mounting body (100).

7. The injection device (10) according to claim 6, characterized in that, The mounting base (510) includes a first connecting part (511) and a second connecting part (512), the first connecting part (511) and the second connecting part (512) are connected and set at an included angle; the mounting hole is opened in the first connecting part (511), and the first connecting part (511) is installed on the outside of the mounting body (100); the sensor (520) is connected to the second connecting part (512).

8. The injection device (10) according to claim 1, characterized in that, The mounting body (100) includes a first support (110), a second support (120), a connecting rod (130), and a driving device (140); the first support (110) and the second support (120) are respectively connected to the two ends of the connecting rod (130); the syringe (200) is disposed between the first support (110) and the second support (120); the driving device (140) is disposed at the end of the second support (120) away from the first support (110), and the driving device (140) is pulsatorically connected to the syringe (200) for driving the syringe (200) to advance or withdraw.

9. The injection device (10) according to claim 8, characterized in that, The mounting body (100) also includes a protective cover (150) which is fitted over the syringe (200).

10. A medical instrument, characterized in that, Includes the injection device (10) as described in any one of claims 1-9.

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