Anti-falling buckle for venous transfusion

Abstract

The invention discloses an anti-falling buckle for venous transfusion. The anti-falling buckle comprises a buckle body. In pipeline locking and force compensation, the buckle achieves stable fixation through cooperation of the main lock and the auxiliary lock. The ratchet of the main lock is meshed with the elastic latch to achieve primary locking, and the auxiliary lock prepresses the curved spring piece to generate radial elastic force; even if the pipeline shrinks due to warm pressure, the spring piece can drive the sliding pressing block to follow up for compensation, the locking force is stabilized, and the risk that the guide pipe falls off is greatly reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, and in particular to a venous transfusion anti-falling buckle. BACKGROUND

[0002] The venous transfusion anti-falling buckle is an innovative auxiliary device in the field of medical care, which has the characteristics of flexible adjustment, simple operation and stable support. The length can be adjusted as needed, and the transfusion device can be firmly fixed to prevent accidental sliding and avoid drug leakage, interruption of transfusion and other situations, ensuring smooth transfusion, reducing medical disputes, and being suitable for various medical settings.

[0003] The current mainstream venous transfusion buckle has many technical defects. The core problem is the attenuation of locking force. The traditional single-stage ratchet buckle relies on plastic teeth to lock, and the transfusion tube is prone to loosen after shrinking due to temperature changes. The actual tensile strength is only 6-8N, which causes frequent catheter falling in clinical practice. There is no operation feedback mechanism, and nurses cannot confirm the locking state through touch or hearing. In poor light scenes such as night, the probability of operation error is high. In terms of reusability, the teeth are often scrapped as a whole after wear and tear, the cost of a single piece is high, and the design of replaceable locking modules is still relatively rare. In addition, the needle tip of the transfusion connector is exposed when the buckle is opened, and the risk of needle stick injury is high. According to WHO statistics, needle stick injury accounts for 32% of medical professional injuries.

[0004] Among the related existing patents, CN217566989U (Transfusion tube anti-falling buckle, Zhejiang University) is an example. Through the design of a unique support mechanism, mounting mechanism and buckle mechanism, it can stably connect the transfusion tube and the transfusion structure, trying to prevent the transfusion tube from falling, but it may also have similar locking force attenuation problems after long-term use due to environmental factors. SUMMARY

[0005] The purpose of the present application is to provide a venous transfusion anti-falling buckle to solve the problems in the background art.

[0006] To achieve the above purpose, the technical solution adopted by the present application is:

[0007] The application discloses a kind of intravenous infusion anti-extraction buckles, including buckle body, locking mechanism is provided on the buckle body, the locking mechanism includes main lock component and vice lock spring compression component, the main lock component includes main lock ratchet, the top of the main lock ratchet is provided with mounting block, the sidewall of the mounting block is connected with first buckle, the bottom of the main lock ratchet is connected with connecting plate, the sidewall of the connecting plate is fixed with second buckle with the same opening direction of first buckle, closing track is opened in the connecting plate, the elastic dog that is engaged with the main lock ratchet is installed in the closing track, the inside passage of the buckle body is provided with the vice lock spring compression component, the vice lock spring compression component includes pre-pressing curved spring piece and sliding block, when first buckle is closed, the pre-pressing curved spring piece can continuously apply radial compensation pressure to pipeline.

[0008] Further, the inner side wall of the buckle body is embedded with a memory alloy support, and the inner surface of the memory alloy support is spacedly provided with silica gel gradient protrusions.

[0009] Further, the closing track is provided with polyurethane protrusions, and a spring sheet sound emitter is installed between the polyurethane protrusions and the inner sidewall of the closing track.

[0010] Further, the sidewall of the main lock ratchet is uniformly provided with a plurality of grooves.

[0011] Further, the mounting block is provided with a clamping groove and a quick-release button, and the top of the main lock ratchet is provided with a control clamping block matched with the clamping groove.

[0012] Further, a folding protective wing is installed on the main lock ratchet.

[0013] Further, a spherical bearing is arranged on the connecting surface of the mounting block and the first buckle, a traction ring matched with the bearing is arranged on the connecting surface of the first buckle and the mounting block, and the first buckle and the mounting block are connected by inserting the spherical bearing into the traction ring.

[0014] Beneficial effects:

[0015] In the pipeline locking and force compensation, the buckle is stably fixed by the cooperation of the main lock and the vice lock. The main lock ratchet and the elastic dog are engaged to achieve preliminary locking, and the vice lock pre-pressing curved spring piece generates radial elastic force. Even if the pipeline shrinks due to temperature and pressure, the spring piece can drive the sliding block to follow up and compensate, so as to stabilize the locking force and greatly reduce the risk of catheter falling off. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the application;

[0017] Figure 2 It is a structural schematic diagram of the pre-pressing curved spring piece of the application;

[0018] Figure 3 Structure diagram of the folding protective wing of the present application unfolded;

[0019] Figure 4 Structure diagram of the second buckle of the present application;

[0020] Figure 5 Structure diagram of the mounting block of the present application;

[0021] Figure 6 Structure diagram of the polyurethane convex point of the present application.

[0022] In the figure: 100, buckle body; 101, main lock ratchet; 102, mounting block; 103, first buckle; 104, connecting plate; 105, second buckle; 106, elastic clamping tooth; 107, closed track; 201, pre-pressed curved spring piece; 202, sliding pressing block; 203, polyurethane convex point; 204, spring piece sound generator; 205, groove; 301, memory alloy support; 302, silica gel gradient convex; 401, clamping groove; 402, clamping block; 403, press quick release button; 501, folding protective wing; 601, traction ring; 602, spherical bearing. DETAILED DESCRIPTION

[0023] In the description of the present embodiment, it should be noted that the terms "upper", "lower", "internal", and the like indicate the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present application is usually placed, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, unless otherwise explicitly specified and limited, the terms "mounting", "connection", and the like should be broadly understood, for example, can be fixedly connected, can be detachably connected, or can be integrally connected; can be directly connected, can be indirectly connected through an intermediate medium, or can be connected internally between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. In addition, unless otherwise specified, the components used in the following embodiments are all existing components, and the corresponding connection methods can also be realized by conventional technical means, which will not be described one by one in the present application.

[0024] The present application will be further described in detail below in conjunction with the drawings and specific embodiments.

[0025] EMBODIMENT

[0026] The present application provides a venous transfusion anti-falling buckle, which comprises a buckle body, a main lock ratchet, a mounting block, a first buckle, a connecting plate, a second buckle, an elastic clamping tooth, a closed track, a pre-pressed curved spring piece, a sliding pressing block, a polyurethane convex point, a spring piece sound generator, a groove, a memory alloy support, a silica gel gradient convex, a clamping groove, a clamping block, and a press quick release button. Figures 1 to 6As shown, the buckle body 100 comprises a buckle body 100 and a locking mechanism, the locking mechanism comprises a main lock assembly and a secondary lock spring compression assembly, the main lock assembly comprises a main lock ratchet 101, the secondary lock spring compression assembly is composed of a pre-pressed curved spring sheet 201 and a sliding block 202, when the main lock is closed, the pre-pressed curved spring sheet 201 can continuously apply radial compensation pressure to the pipeline, the top end of the main lock ratchet 101 is provided with a mounting block 102, the side wall of the mounting block 102 is provided with a first buckle 103, the bottom end of the main lock ratchet 101 is provided with a connecting plate 104, the side wall of the connecting plate 104 is fixedly provided with a second buckle 105, and the connecting plate 104 is provided with a closing track 107, and the closing track 107 is provided with an elastic clamping tooth 106.

[0027] Preferably, the buckle body 100 is integrated with a tactile-auditory feedback module, the tactile-auditory feedback module comprises a polyurethane protrusion 203, a spring sounder 204 and a plurality of grooves 205, the polyurethane protrusion 203 is arranged in the closing track 107, the polyurethane protrusion 203 and the closing track 107 are provided with the spring sounder 204, and the plurality of grooves 205 are evenly distributed along the side wall of the main lock ratchet 101.

[0028] Preferably, the buckle body 100 further comprises a memory alloy support 301 and a silica gel gradient protrusion 302, the memory alloy support 301 is arranged on the inner side wall of the buckle body 100, and the silica gel gradient protrusion 302 is evenly and spacedly arranged on the inner surface of the memory alloy support 301.

[0029] Preferably, the fast release type locking module is arranged between the main lock ratchet 101 and the mounting block 102, the fast release type locking module comprises a clamping groove 401, a clamping block 402 and a pressing quick release button 403, the clamping groove 401 is arranged in the mounting block 102, the clamping block 402 is arranged on the outer wall of the main lock ratchet 101 and matched with the clamping groove 401, and the pressing quick release button 403 is arranged at the matching position of the clamping groove 401 and the clamping block 402 and used for controlling the locking and separation of the clamping block 402 and the clamping groove 401.

[0030] Preferably, the buckle opening side of the buckle body 100 is additionally provided with a folding protective wing 501, when the buckle is opened, the folding protective wing 501 can be automatically unfolded and cover the sharp end of the catheter connector.

[0031] Preferably, the first buckle 103 and the mounting block 102 are connected with a traction ring 601 and a spherical bearing 602, the spherical bearing 602 is arranged at the connecting position of the traction ring 601 and the first buckle 103, one end of the traction ring 601 is connected with the spherical bearing 602, and the other end is fixedly connected with the mounting block 102.

[0032] Through the above technical scheme:

[0033] In use, the buckle body 100 is made of medical-grade PPSU material and is injection molded into a U-shaped structure. The main lock ratchet 101 is made of polyformaldehyde and has reverse teeth on the surface to ensure reliable engagement with the elastic latch 106.

[0034] When the tube needs to be fixed, the tube is placed in the channel of the buckle body 100, and the main lock ratchet 101 is rotated to enter the closed track 107. The teeth of the main lock ratchet 101 engage with the elastic latch 106 to achieve preliminary locking. As the main lock continues to close, the pre-compressed curved spring sheet 201 is compressed, generating a radial elastic force that pushes the sliding block 202 to continuously press the tube. When the tube shrinks due to temperature changes or pressure, the deformation force of the pre-compressed curved spring sheet 201 is released, driving the sliding block 202 to follow up and compensate, maintaining the stability of the locking force.

[0035] When the main lock ratchet 101 moves to the final position in the closed track 107: the end of the main lock ratchet 101 contacts the polyurethane protrusion 203, causing a significant resistance mutation. The locking signal is transmitted through the finger touch, and at the same time, the main lock ratchet 101 presses the free end of the spring sheet sounder 204, causing it to elastically deform and then reset instantly, producing a "click" sound. The double feedback mechanism ensures that medical staff can accurately determine the locking state without visual assistance, improving the correct operation rate.

[0036] According to the cost, considering the cost and feasibility, a memory alloy bracket 301 is selectively installed. When the infusion causes the tube temperature to decrease, the memory alloy bracket 301 undergoes a phase change, expanding radially, and the bracket expansion drives the silica gel gradient protrusion 302 to press the tube, cooperating with the compensation force of the pre-compressed curved spring sheet 201 to increase the total locking force. The gradient protrusion design ensures that the tube is uniformly pressed, avoiding local excessive pressure that causes poor drug flow.

[0037] During assembly, the clamping block 402 of the main lock ratchet 101 is inserted into the clamping groove 401 of the mounting block 102 until the positioning bead is inserted into the groove 205, achieving locking. When the teeth of the main lock ratchet 101 need to be replaced, press the quick-release button 403 to compress the positioning bead with the connecting rod, and the main lock ratchet 101 can be removed as a whole. After replacing the new main lock ratchet 101, repeat the assembly steps to complete the replacement. The entire process does not require tools, is time-saving, and has low single-module replacement cost.

[0038] When the buckle is opened, the rotation angle of the main lock ratchet 101 gradually increases, and when it exceeds the threshold, the torsion spring drives the folding protective wing 501 to rotate around the rotation shaft and fully expand. The expanded folding protective wing 501 forms a 120° sector barrier, completely covering the needle tip of the catheter connector, avoiding direct contact with sharp instruments during operation by medical staff. When the buckle is closed, the main lock ratchet 101 rotates in the opposite direction, driving the folding protective wing 501 to fold back against the spring force, without affecting the normal locking operation.

[0039] The traction ring 601 rotates 360° through the spherical bearing 602, allowing the catheter to freely turn within a 30° range as the patient's body position changes.

[0040] Although the embodiments of the present application are described in the specification, these embodiments are only as a hint and should not limit the protection scope of the present application. Various omissions, substitutions and changes made within the scope of the present application without departing from the spirit of the present application should be included in the protection scope of the present application.

Claims

1. A type of intravenous infusion anti-dislodgement buckle, characterized in that: The utility model provides a buckle body, which is provided with a locking mechanism, the locking mechanism comprises a main lock assembly and a vice lock spring compression assembly, the main lock assembly comprises a main lock ratchet, the top of the main lock ratchet is provided with a mounting block, the side wall of the mounting block is connected with a first buckle, the bottom of the main lock ratchet is connected with a connecting plate, the side wall of the connecting plate is fixed with a second buckle which is the same as the opening direction of the first buckle, a closing track is formed in the connecting plate, the closing track is provided with an elastic tooth which is engaged with the main lock ratchet, the vice lock spring compression assembly is arranged in the internal passage of the buckle body, the vice lock spring compression assembly comprises a pre-pressing curved spring piece and a sliding pressing block, when the first buckle is closed, the pre-pressing curved spring piece can continuously apply radial compensation pressure to the pipeline.

2. The vein transfusion anti-drop preventing buckle according to claim 1, characterized in that: The inner side wall of the buckle body is embedded with a memory alloy support, and the inner surface of the memory alloy support is spacedly provided with silica gel gradient protrusions.

3. The vein transfusion anti-drop preventing buckle according to claim 1, characterized in that: The closing track is provided with polyurethane protrusions, and the polyurethane protrusions are provided with elastic sheet sounders between the inner side walls of the closing track.

4. The vein transfusion anti-drop preventing buckle according to claim 1, characterized in that: The side wall of the main lock ratchet is uniformly provided with a plurality of grooves.

5. The drip guard of claim 1, wherein: The mounting block is provided with a clamping groove and a pressing quick-release button, and the top of the main lock ratchet is provided with a control clamping block matched with the clamping groove.

6. The vein transfusion anti-drop preventing buckle according to claim 1, characterized in that: The main lock ratchet is provided with a folding protective wing.

7. The vein transfusion anti-drop preventing buckle according to claim 1, characterized in that: The connecting surface of the mounting block and the first buckle is provided with a spherical bearing, the connecting surface of the first buckle and the mounting block is provided with a traction ring matched with the bearing, and the first buckle and the mounting block are connected by inserting the spherical bearing into the traction ring.

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