Folding core and easy-to-break part

Abstract

The utility model discloses a folding core and an easy-to-break part. The folding core comprises a pipe fitting and a breaking rod which are connected into a whole, the first end of the breaking rod is connected with and blocks a pipe opening of the pipe fitting, a breaking portion is formed at the connecting position of the pipe fitting and the breaking rod, the section size of the breaking rod is gradually reduced from the first end to the second end, and a liquid groove extending in the axial direction is formed in the position, close to the second end, of the breaking rod. By optimizing the structure of the breaking rod, the size of the cross section of the breaking rod is gradually reduced from the first end to the second end, and particularly, the liquid groove is formed close to the second end, so that liquid can be effectively guided to flow, the flow blocking phenomenon is reduced, the flow stability in the liquid conveying process is ensured, and efficient and safe conveying of medicaments or blood is ensured; and the liquid groove enables the breaking rod not to be made to be very thin and sharp, enough strength and flexibility can be guaranteed, the protective sleeve is not prone to being scratched, and therefore the safety and reliability of the product are better.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field, concretely relates to a folding core and easy broken part. BACKGROUND

[0002] In the medical and nursing industry, infusion tubes and blood bag tubes are important equipment for ensuring the safe and effective delivery of biological liquids such as drugs and blood. The easy broken part, as an important component in the infusion tube and blood bag tube, is designed with a mechanism that allows it to break when in use, but not when in its normal state. This mechanism ensures that the fluid system remains sealed when the device is idle or does not need to deliver liquid, thereby effectively preventing liquid leakage or contamination.

[0003] The easy broken part is usually composed of an outer sleeve and an inner folding core. However, after the folding core breaks, it causes a significant obstruction to fluid flow through that part, leading to unstable liquid flow. To solve this problem, some existing technologies choose to design the folding core to be thinner, in order to reduce the obstruction to the cross-section of the outer sleeve after the folding core breaks. However, a folding core that is too thin is difficult to achieve a balance between strength and flexibility in terms of material selection and structure, and cannot guarantee its safety and reliability. In addition, this weak design is prone to causing the outer sleeve to be punctured when subjected to external force, thereby causing the risk of liquid leakage and contamination. This not only may cause waste of drugs or blood, but also may cause safety hazards such as cross-infection.

[0004] Therefore, in view of the above problems, a new folding core design and easy broken part are proposed to improve the liquid passing capacity and enhance the structural safety, which has important practical value and market demand. SUMMARY

[0005] In order to improve the liquid passing capacity while ensuring safety, the utility model provides a folding core and an easy broken part.

[0006] The technical scheme adopted by the utility model is as follows: a folding core, comprising a pipe and a breaking rod connected as one, the first end of the breaking rod connects and blocks the pipe opening of the pipe, the connection between the pipe and the breaking rod forms a breaking position, the cross-sectional size of the breaking rod gradually decreases from the first end to the second end, and the breaking rod is provided with a liquid groove extending in the axial direction at a position close to the second end.

[0007] Preferably, the breaking rod is a circular cone, the large diameter end is the first end, and the small diameter end is the second end.

[0008] Preferably, the breaking rod is a circular cone, the large diameter end is the first end, and the small diameter end is the second end.

[0009] Preferably, the liquid tank and the chamfer are both two, symmetrically arranged on both sides of the breakable rod.

[0010] Preferably, the first end has a counterbore, and the aperture of the counterbore is connected and sealed with the pipe opening of the pipe.

[0011] Preferably, the second end is rounded.

[0012] The second technical scheme of the utility model is as follows: an easy-to-break part, comprising a sheath pipe, a connecting pipe is inserted at both ends of the sheath pipe, a folding core is arranged in the middle of the sheath pipe, and the outer wall of the pipe is in sealing connection with the inner wall of the sheath pipe.

[0013] The utility model has the advantages that: the utility model optimizes the structure of the breakable rod, the cross-sectional dimension gradually decreases from the first end to the second end, especially the liquid tank arranged near the second end can effectively guide the liquid flow, reduce the flow blocking phenomenon, ensure the flow stability in the liquid conveying process, and ensure the efficient and safe conveying of the medicament or blood; moreover, the liquid tank makes the breakable rod not too thin and sharp, can ensure sufficient strength and flexibility, and the sheath pipe is not easily scratched, so that the safety and reliability of the product are better. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a perspective view of the utility model embodiment one.

[0015] Figure 2 It is a front view of the utility model embodiment one.

[0016] Figure 3 It is a B-B sectional view of the utility model embodiment one.

[0017] Figure 4 It is a sectional view of the utility model embodiment two.

[0018] Pipe 1; breakable rod 2, first end 201, second end 202, liquid tank 203, chamfer 204, counterbore 205; sheath pipe 3; connecting pipe 4; breakable position A. DETAILED DESCRIPTION

[0019] The utility model will be further described in connection with the embodiments and the drawings.

[0020] In the embodiments, as Figures 1-4As shown, it is a kind of breakable piece applied in infusion tube or blood bag tube, including sheath tube 3, the two ends of sheath tube 3 are inserted with connecting pipe 4, and the middle part of sheath tube 3 is provided with folding core, the outer wall of pipe piece 1 is sealedly connected with the inner wall of sheath tube 3. Among them, folding core includes pipe piece 1 and breakable rod 2 connected as a whole, the first end 201 of breakable rod 2 is connected and blocks the pipe opening of pipe piece 1, the connecting place of pipe piece 1 and breakable rod 2 forms breakage position A, the cross-sectional size of breakable rod 2 gradually decreases from the first end 201 to the second end 202, and the liquid groove 203 extending along the axial direction is arranged at the position close to the second end 202 of breakable rod 2. In the embodiment, the structure of breakable rod 2 is optimized, so that the cross-sectional size gradually decreases from the first end 201 to the second end 202, especially the liquid groove 203 arranged close to the second end 202 can effectively guide the liquid flow, reduce the flow blocking phenomenon, ensure the flow stability in the liquid conveying process, and ensure the efficient and safe conveying of medicaments or blood. Moreover, the liquid groove 203 makes the breakable rod 2 not too thin and sharp, which can ensure sufficient strength and flexibility, and the sheath tube 3 is not easy to scratch, so that the safety and reliability of the product are better.

[0021] As shown in the embodiment, Figures 1-3 The breakable rod 2 is a cylinder or a circular cone, the large-diameter end is the first end 201, the small-diameter end is the second end 202, the rod body has a bevel surface 204, the bevel surface 204 intersects with the second end 202, and the liquid groove 203 is arranged on the bevel surface 204. This structure, the liquid groove 203 and the bevel surface 204 form a larger gap in the sheath tube 3, thereby forming a liquid flow area, ensuring the efficient and safe conveying of medicaments or blood.

[0022] As shown in the embodiment, Figures 1-3 The liquid groove 203 and the bevel surface 204 both have two, which are symmetrically arranged on both sides of the breakable rod 2. This structure further forms a larger liquid flow area, ensuring the stability of the flow.

[0023] As shown in the embodiment, Figure 3 The first end 201 has a counterbore 205, and the hole opening of the counterbore 205 is connected and blocked with the pipe opening of the pipe piece 1. This structure can ensure that the breakable rod 2 can be smoothly broken with the connecting pipe 4, avoid the situation of not being broken or not being completely broken, and improve the reliability of the product.

[0024] As shown in the embodiment, Figures 1-3 The second end 202 is rounded. The rounded corner can further avoid scratching the sheath tube 3 after breaking the breakable rod 2, further improving the safety.

[0025] Obviously, the above embodiments of the present application are only examples for illustrating the present application, and are not intended to limit the embodiments of the present application. Other obvious changes or modifications derived from the essential spirit of the present application still belong to the protection scope of the present application.

Claims

1. A folding core, comprising a tube (1) and a folding rod (2) connected as a whole, a first end (201) of the folding rod (2) being connected to and sealingly closing a tube opening of the tube (1), a connection between the tube (1) and the folding rod (2) forming a folding position (A), characterized in that a cross-sectional dimension of the folding rod (2) gradually decreases from the first end (201) to a second end (202), and the folding rod (2) is provided with a liquid groove (203) extending in an axial direction at a position close to the second end (202).

2. The folding core according to claim 1, wherein the folding rod (2) is a circular cone, a large-diameter end of the circular cone being the first end (201) and a small-diameter end of the circular cone being the second end (202).

2. The core according to claim 1, characterized in that 3. The folding core according to claim 1, wherein the folding rod (2) is a circular cylinder or a circular cone, a body of the folding rod (2) having a chamfered surface (204) intersecting the second end (202), and the liquid groove (203) is arranged on the chamfered surface (204).

3. The core according to claim 1, wherein 4. The folding core according to claim 3, wherein the folding rod (2) has two chamfered surfaces (204) and two liquid grooves (203), the two chamfered surfaces (204) and the two liquid grooves (203) being symmetrically arranged on two sides of the folding rod (2).

4. The core according to claim 3, wherein 5. The folding core according to claim 1, wherein the first end (201) has a counterbore (205), and a hole opening of the counterbore (205) is connected to and sealingly closes the tube opening of the tube (1).

5. The core according to claim 1, wherein 6. The folding core according to claim 1, wherein the second end (202) is rounded.

6. The core according to claim 1, wherein 7. A folding core assembly, comprising a sheath tube (3), two ends of the sheath tube (3) being inserted with a connecting tube (4), and a folding core as claimed in any one of claims 1 to 6 being arranged in a middle portion of the sheath tube (3), an outer wall of the tube (1) being sealingly connected to an inner wall of the sheath tube (3).

7. A frangible member, characterized by ​

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