Auxiliary device for adjusting injection angle

Abstract

The utility model discloses an auxiliary device for adjusting an injection angle, which belongs to the field of medical instruments and comprises a positioning clamp, an adjusting rod and an adjusting rod. The counter weight is rotationally connected to the outer wall of the positioning clamp, and the end, not connected with the positioning frame, of the counter weight faces the gravity direction all the time; an arc-shaped hole is formed in the counter weight piece in a penetrating mode, part of the arc-shaped vernier scale is movably arranged in the arc-shaped hole, and scales are arranged on the outer wall of the arc-shaped vernier scale; the warning structure is connected to the outer wall of the positioning clamp, the motion path of the arc-shaped vernier scale coincides with the warning structure, when the balance weight piece rotates to a critical position, one end of the arc-shaped vernier scale abuts against the outer wall of the warning structure, and the warning structure is extruded by the arc-shaped vernier scale and gives an alarm. By means of the arrangement, a warning can be fed back to medical staff when the needle inserting angle of the injector deviates from a set value too much, so that the medical staff are helped to reduce errors during injection operation, and operation safety and accuracy are improved.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, specifically relating to an injection angle adjustment auxiliary device. Background Technology

[0002] In medical and nursing education, accurately mastering the needle insertion angle is a crucial skill. Whether intradermal, intravenous, subcutaneous, or intramuscular injection, different injection methods have specific needle insertion angle requirements. For example, the intradermal injection angle is approximately 5°, the intravenous injection angle is approximately 15-30°, the subcutaneous injection angle is approximately 30-40°, and the intramuscular injection angle is approximately 90°. However, traditional syringes do not provide a clear visual indication of the insertion angle during actual operation. Beginners must rely on intuition to judge the angle, making it difficult to notice subtle angle changes, such as the injection angle changing from 5° to 6°, during the dynamic movement of the syringe. This presents a significant challenge to their learning and practice, easily leading to operational errors and affecting teaching effectiveness as well as the safety and accuracy of actual medical procedures.

[0003] Therefore, an injection assistance device is designed that is simple in structure, easy to operate, and can provide feedback and warning to medical staff when the syringe needle insertion angle deviates too much from the set value. Specifically, this injection assistance device is an injection angle adjustment assistance device. Utility Model Content

[0004] To overcome the problems mentioned in the background art, the present invention adopts the following technical solution:

[0005] An injection angle adjustment auxiliary device includes: a positioning clamp connected to the outer wall of a syringe, capable of reciprocating along the syringe axis under external force, allowing medical personnel to move the positioning clamp on the syringe; a counterweight rotatably connected to the outer wall of the positioning clamp, with the end of the counterweight not connected to the positioning clamp always facing the direction of gravity; the positioning clamp moves synchronously when the spatial position and posture of the syringe change, thus the injection angle inevitably changes under the interference of the medical personnel's subtle movements, which is one of the main reasons affecting the accuracy of the injection angle; an arc-shaped vernier caliper, with an arc-shaped hole penetrating the counterweight, the movement of the arc-shaped vernier caliper portion being controlled by the arc-shaped hole, and scale markings on the outer wall of the arc-shaped vernier caliper; and a warning structure connected to the outer wall of the positioning clamp, the movement path of the arc-shaped vernier caliper coinciding with the warning structure; when the counterweight rotates to a critical position, one end of the arc-shaped vernier caliper abuts against the outer wall of the warning structure, causing the warning structure to be compressed by the arc-shaped vernier caliper and triggering an alarm.

[0006] Furthermore, the counterweight includes a connecting rod and a counterweight block that are connected to each other. One end of the connecting rod is rotatably connected to the outer wall of the positioning clamp, and the other end of the connecting rod is connected to the counterweight block.

[0007] Furthermore, the connecting rod is provided with an arc-shaped hole and a display hole. When the arc-shaped vernier scale moves within the arc-shaped hole, the display hole exposes at most one scale value. By providing the display hole, medical personnel can easily adjust the position of the arc-shaped vernier scale within the arc-shaped hole in a quantitative manner.

[0008] Furthermore, the maximum scale value of the arc-shaped vernier caliper is not less than 90°, and the interval between the scale markings is not greater than 5°; when the zero scale value of the scale markings moves to the display hole and triggers the alarm structure, the angle between the connecting rod and the syringe is 90°.

[0009] Furthermore, a connecting shaft is connected to the outer wall of the positioning clamp. The connecting shaft is rotatably connected to the connecting rod, and a bearing is provided between the connecting shaft and the connecting rod. The counterweight rotates around the central axis of the connecting shaft, and the center of the arc-shaped vernier caliper coincides with the central axis of the connecting shaft. The bearing helps to reduce the rotational friction between the connecting rod and the connecting shaft, making the relative movement between the counterweight and the positioning clamp more precise.

[0010] Furthermore, the outer wall of the counterweight is provided with a sliding groove, and a limiting channel communicating with the arc-shaped hole is provided inside the counterweight. The limiting channel is connected to the sliding groove. A limiting pin is installed within the limiting channel, with part of the limiting pin exposed outside the sliding groove. When the end of the limiting pin facing the arc-shaped hole enters the arc-shaped hole, it abuts against the arc-shaped vernier scale. After adjusting the relative position of the arc-shaped vernier scale and the display hole, pressing down the limiting pin to make it abut against the arc-shaped vernier scale can restrict the movement of the arc-shaped vernier scale within the arc-shaped hole, preventing the position of the arc-shaped vernier scale from changing during teaching or actual treatment, and preventing the injection angle from exceeding the required range.

[0011] Furthermore, the limiting pin and the limiting channel are interference-fitted, and the length of the limiting pin is not greater than the length of the limiting channel.

[0012] Furthermore, the warning structure includes a pressure-sensing element and an alarm element that are interconnected.

[0013] Furthermore, an elastic pad is provided at the end of the arc-shaped vernier scale facing the warning structure. The elastic pad acts as a buffer to prevent damage to the pressure-sensing element or affect its sensitivity during use.

[0014] Furthermore, the positioning clamp is elastic, and a clamping channel is provided through the positioning clamp. The inner diameter of the clamping channel can change under the elastic action of the positioning clamp, so that the positioning clamp can clamp onto various syringes with different outer diameters.

[0015] The beneficial effects of this utility model are:

[0016] 1. An alarm structure is provided that triggers when the curved vernier caliper reaches a critical position along with the counterweight. When the counterweight moves to the critical position and the curved vernier caliper presses against the pressure sensing element, the alarm element sounds. Therefore, medical staff do not need to constantly observe the reading of the curved vernier caliper to know that the change in injection angle has exceeded the preset range. This further simplifies the use of this device and helps to ensure the teaching effect as well as the safety and accuracy during actual medical operations.

[0017] 2. It is equipped with a positioning device. The positioning clamp can reciprocate along the syringe axis under the action of external force. Medical staff can move the positioning clamp on the syringe, which is beneficial to adjust the relative position of the auxiliary device and the syringe during teaching or treatment operations, so as to make it more in line with the treatment habits of medical staff. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0019] Figure 1 A schematic diagram of the overall structure of this utility model when the counterweight has not moved to the critical position and the limiting pin is not in contact with the arc-shaped vernier scale;

[0020] Figure 2 for Figure 1 A schematic diagram of a cross-sectional structure;

[0021] Figure 3 A schematic diagram of the overall structure of this utility model when the counterweight moves to the critical position and the limiting pin is pressed against the arc-shaped vernier scale;

[0022] Figure 4 for Figure 3 A schematic diagram of a cross-sectional structure;

[0023] Figure 5 A schematic diagram of an overall structure for a counterweight;

[0024] Figure 6 A schematic diagram of the overall structure of a positioning clip;

[0025] In the diagram, 1. Positioning clamp; 11. Connecting shaft; 12. Bearing; 13. Clamping channel; 14. Opening; 2. Counterweight; 21. Connecting rod; 211. Arc-shaped hole; 212. Indicator hole; 213. Slide groove; 214. Limiting channel; 22. Counterweight block; 3. Arc-shaped vernier caliper; 31. Scale marking; 32. Elastic pad; 4. Warning structure; 41. Pressure sensing element; 42. Warning element; 5. Limiting pin. Detailed Implementation

[0026] The technical solutions of this utility model are clearly and completely described below through specific embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] An injection angle adjustment auxiliary device, such as Figure 1-6As shown, it includes: a positioning clip 1, connected to the outer wall of the syringe, which can reciprocate along the syringe axis under external force. Medical personnel can move the positioning clip 1 on the syringe to a position where it will not touch the hands of medical personnel or the patient's body surface when performing injection, thereby avoiding further impact on the safety and accuracy of the injection operation; and a counterweight 2, rotatably connected to the outer wall of the positioning clip 1. The end of the counterweight 2 not connected to the positioning frame always faces the direction of gravity. The positioning clip 1 will move synchronously when the spatial position and posture of the syringe change. Therefore, the injection angle will inevitably change under the interference of the slight movements of medical personnel, which is one of the main reasons affecting the accuracy of the injection angle. The counterweight 2 is designed to always point in the direction of gravity when the injection angle changes, thus providing a reference for the angle change of the positioning clamp 1. This allows the change in the injection angle to be represented as a change in the angle between the counterweight 2 and the positioning frame. The arc-shaped vernier caliper 3 has an arc-shaped hole 211 through which the counterweight 2 passes. The movement of the arc-shaped vernier caliper 3 is controlled by the arc-shaped hole 211. The outer wall of the arc-shaped vernier caliper 3 has scale markings 31. By setting the arc-shaped hole 211 to connect the arc-shaped vernier caliper 3, the relative position relationship between the arc-shaped vernier caliper 3 and the counterweight 2 is adjustable. This allows the angle change of the positioning clamp 1 relative to the counterweight 2 to be more intuitively reflected on the scale of the arc-shaped vernier caliper 3, enabling medical staff to intuitively understand the change in the injection angle. The warning structure 4 is connected to the outer wall of the positioning clamp 1. The movement path of the arc-shaped vernier caliper 3 coincides with that of the warning structure 4. When the counterweight 2 rotates to a critical position, one end of the arc-shaped vernier caliper 3 presses against the outer wall of the warning structure 4, causing the warning structure 4 to be compressed and triggering an alarm. The warning structure 4 provides an audible or color warning, based on the pressure sensing element that makes up the warning structure 4. The pressure sensing element is connected to the warning element 42. When the counterweight 2 moves to the critical position and the arc-shaped vernier caliper 3 presses against the pressure sensing element, the warning element 42 triggers an audible alarm or changes color. Medical personnel can then determine that the injection angle has exceeded the preset range without constantly observing the reading of the arc-shaped vernier caliper 3. This simplifies the use of the device and helps ensure the effectiveness of teaching and the safety and accuracy of actual medical operations. The warning structure 4 includes a pressure-sensing element 41 and an alarm element 42 that are electrically connected to each other. The alarm element is specifically a buzzer or an LED light. The positioning clip 1 has a replaceable button battery built in to power the pressure-sensing element 41 and the alarm element 42.

[0028] In some embodiments of this application, such as Figure 1-6 As shown, the counterweight 2 includes a connecting rod 21 and a counterweight block 22 that are connected to each other. One end of the connecting rod 21 is rotatably connected to the outer wall of the positioning clamp 1, and the other end of the connecting rod 21 is connected to the counterweight block 22.

[0029] In some embodiments of this application, such as Figure 1-6 As shown, the connecting rod 21 has an arc-shaped hole 211 and a display hole 212 through it. When the arc-shaped vernier caliper 3 moves within the arc-shaped hole 211, the display hole 212 exposes at most one scale value. By setting the display hole 212, medical personnel can easily adjust the position of the arc-shaped vernier caliper 3 within the arc-shaped hole 211 quantitatively. Specifically, when the part of the arc-shaped vernier caliper 3 except for the part within the arc-shaped hole 211 is completely exposed between the counterweight 2 and the warning structure 4, the scale value of the arc-shaped vernier caliper 3 exposed through the display hole 212 is zero. At this time, the central axis of the connecting rod 21 is perpendicular to the central axis of the syringe, and the warning structure 4 alarms. When the angle between the counterweight 2 and the positioning frame decreases, the arc-shaped vernier caliper 3 gradually passes through the arc-shaped hole 211, and at the same time, the scale value in the display hole 212 gradually increases. When medical staff adjust the scale value in the display hole 212 to a certain value, an alarm will be triggered when the actual angle between the counterweight 2 and the positioning clamp 1 exceeds this value, thereby alerting medical staff that the value of the injection angle has exceeded the range that should be executed.

[0030] In some embodiments of this application, such as Figure 1-6 As shown, the maximum scale value of the arc-shaped vernier caliper 3 is not less than 90°, and the interval of the scale mark 31 is not greater than 5°; when the zero scale value of the scale mark 31 moves to the display hole 212 and triggers the alarm structure 4, the angle between the connecting rod 21 and the syringe is 90°.

[0031] In some embodiments of this application, such as Figure 1-6 As shown, a connecting shaft 11 is connected to the outer wall of the positioning clamp 1. The connecting shaft 11 is rotatably connected to the connecting rod 21. A bearing 12 is provided between the connecting shaft 11 and the connecting rod 21. The counterweight 2 rotates around the central axis of the connecting shaft 11, and the center of the arc-shaped vernier scale 3 coincides with the central axis of the connecting shaft 11. The bearing 12 helps to reduce the rotational friction between the connecting rod 21 and the connecting shaft 11, making the relative movement between the counterweight 2 and the positioning clamp 1 more precise.

[0032] In some embodiments of this application, such as Figure 1-6As shown, the outer wall of the counterweight 2 has a groove 213, and the counterweight 2 has a limiting channel 214 that connects to the arc-shaped hole 211. The limiting channel 214 is connected to the groove 213. A limiting pin 5 is installed within the limiting channel 214, with part of the limiting pin 5 exposed outside the groove 213. When the end of the limiting pin 5 enters the arc-shaped hole 211, it abuts against the arc-shaped vernier caliper 3. After adjusting the relative position of the arc-shaped vernier caliper 3 and the display hole 212, pressing the limiting pin 5 to make it abut against the arc-shaped vernier caliper 3 restricts the movement of the arc-shaped vernier caliper 3 within the arc-shaped hole 211, preventing the position of the arc-shaped vernier caliper 3 from changing during teaching or actual treatment, and preventing the injection angle from exceeding the required range. The limiting pin 5 and the limiting channel 214 are interference-fitted, and the length of the limiting pin 5 is not greater than the length of the limiting channel 214.

[0033] In some embodiments of this application, such as Figure 1-6 As shown, an elastic pad 32 is provided at the end of the arc-shaped vernier scale 3 facing the warning structure 4. The elastic pad 32 plays a buffering role to prevent damage to the pressure-sensing element 41 or affect its sensitivity during use.

[0034] In some embodiments of this application, such as Figure 1-6 As shown, the positioning clip 1 is elastic, and a clamping channel 13 is provided through the positioning clip 1. The inner diameter of the clamping channel 13 can change under the elastic action of the positioning clip 1, so that the positioning clip 1 can clamp onto various syringes with different outer diameters. The elastic opening and closing clamping can effectively reduce the operation difficulty for medical staff, and the clamping channel 13 of the positioning clip 1 can shrink under its own elastic action after expanding under external force. Medical staff only need to open the positioning clip 1 and assemble it with the syringe. The operation steps are few and the structure is simple, so the structure has high stability. There is also an opening 14 between the clamping channel 13 and the outer wall of the positioning clip 1. The size of the opening 14 changes with the inner diameter of the clamping channel 13. When the positioning clip 1 is sleeved on the outer wall of the syringe, the distance of the opening 14 is always smaller than the inner diameter of the clamping channel 13. When using this product, medical staff first determine the numerical range of the injection angle based on the different injection procedures, such as intradermal injection, intravenous injection, intramuscular injection, or others. They then adjust the reading of the curved vernier caliper 3 according to this range. For example, when performing an intravenous injection, the reading of the curved vernier caliper 3 through the indicator hole 212 is adjusted to 40°. During the injection process, the elastic pad 32 is brought as close as possible to the warning structure 4, thus maintaining the angle between the positioning clip 1 and the counterweight 2 between 30° and 40°. When inexperienced medical staff are operating the product, they can adjust the posture of holding the syringe so that the curved vernier caliper 3 contacts the warning structure 4. By fine-tuning the syringe angle and the warning effect of the warning structure 4, they can quickly improve their muscle memory for injections at specific angles, thereby enhancing the effectiveness of injection instruction.

Claims

1. An injection angle adjustment assist device characterized by, include, The positioning clip connects to the outer wall of the syringe; The counterweight is rotatably connected to the outer wall of the positioning clamp, and the end of the counterweight that is not connected to the positioning frame always faces the direction of gravity. An arc-shaped vernier scale, wherein the counterweight is provided with an arc-shaped hole, the movement of the arc-shaped vernier scale is provided in the arc-shaped hole, and the outer wall of the arc-shaped vernier scale is provided with scale markings; The warning structure is connected to the outer wall of the positioning clamp. The movement path of the arc-shaped vernier caliper coincides with the warning structure. When the counterweight rotates to a critical position, one end of the arc-shaped vernier caliper presses against the outer wall of the warning structure, and the warning structure is squeezed by the arc-shaped vernier caliper and issues a warning.

2. The injection angle adjustment aid of claim 1, wherein The counterweight includes a connecting rod and a counterweight block that are connected to each other. One end of the connecting rod is rotatably connected to the outer wall of the positioning clamp, and the other end of the connecting rod is connected to the counterweight block.

3. An injection angle adjustment aid according to claim 2, wherein, The connecting rod is provided with an arc-shaped hole and a display hole. When the arc-shaped vernier scale moves within the arc-shaped hole, the display hole exposes at most one scale value.

4. The injection angle adjustment aid of claim 3, wherein, The maximum scale value of the arc-shaped vernier caliper is not less than 90°, and the interval between the scale markings is not greater than 5°; when the zero scale value of the scale markings moves to the display hole and triggers the alarm structure, the angle between the connecting rod and the syringe is 90°.

5. The injection angle adjustment aid of claim 2, wherein, A connecting shaft is connected to the outer wall of the positioning clamp. The connecting shaft is rotatably connected to the connecting rod. A bearing is provided between the connecting shaft and the connecting rod. The counterweight rotates around the central axis of the connecting shaft, and the center of the arc-shaped vernier caliper coincides with the central axis of the connecting shaft.

6. The injection angle adjustment auxiliary device according to claim 1, characterized in that, The outer wall of the counterweight is provided with a sliding groove, and the counterweight is provided with a limiting channel that connects to the arc-shaped hole. The limiting channel is connected to the sliding groove. A limiting pin is provided in the limiting channel. The limiting pin is partially exposed outside the sliding groove. When the end of the limiting pin facing the arc-shaped hole enters the arc-shaped hole, it abuts against the arc-shaped vernier scale.

7. An injection angle adjustment aid according to claim 6, wherein, The limiting pin and the limiting channel are interference-fitted, and the length of the limiting pin is not greater than the length of the limiting channel.

8. The injection angle adjustment aid of claim 1, wherein, The warning structure includes pressure-sensing elements and alarm elements that are interconnected.

9. The injection angle adjustment aid of claim 1, wherein, An elastic pad is provided at the end of the arc-shaped vernier scale facing the warning structure.

10. The injection angle adjustment auxiliary device according to claim 1, characterized in that, The positioning clamp is elastic, and a clamping channel is provided through the positioning clamp. The inner diameter of the clamping channel can change under the elastic action of the positioning clamp.

Images