Blood bag stopper breaking pliers
By incorporating a frame and spring structure into the blood bag stopper rod breaking forceps, the pressure applied can be controlled, solving the problem of excessive force in existing breaking forceps and improving operational safety and the integrity of the blood bag.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GENERAL HOSPITAL OF THE CENT WAR ZONE OF THE CHINESE PEOPLES LIBERATION ARMY
- Filing Date
- 2025-09-11
- Publication Date
- 2026-08-04
AI Technical Summary
Existing breakers are difficult to control the pressure applied during use, which can easily lead to violent pressure operations, resulting in the flying of plug rod fragments and damage to blood bags, posing a safety hazard.
A blood bag stopper rod breaking forceps is designed. By setting a frame and a spring on the forceps body one and forceps body two, the spring's rebound force prompts medical personnel to apply pressure slowly, reducing the risk of violent operation. The forceps head includes a V-shaped design and a limiting component structure to control the amount of pressure applied.
Effective control of pressure application reduces the risk of the stopper rod breaking due to force, improves operational safety, and avoids blood bag rupture and personnel injury.
Smart Images

Figure CN224587834U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical tool technology, specifically to a blood bag stopper rod breaking pliers. Background Technology
[0002] Blood collection bags are medical containers used for collecting, storing, and processing blood and its components. They are classified as medical devices and must meet standards for sterility, non-toxicity, and anticoagulation. Blood collection bags are typically three-, four-, or five-piece bags, including components such as a main blood collection bag, a red blood cell preservation fluid bag, and a plasma transfer bag. The main blood collection bag is used to collect blood, the red blood cell preservation fluid bag provides an anticoagulant to prevent blood clotting, and the plasma transfer bag is used to separate plasma and red blood cells. Some configurations also include a filter tray and a sample retention bag for filtering out white blood cells and retaining test samples.
[0003] When separating red blood cells and plasma, the stopper rod of the red blood cell bag needs to be broken first. Then, the upper layer of plasma in the blood collection bag is gently squeezed and introduced into the empty blood bag. The separation of plasma and red blood cells is achieved by using the siphon principle. During the breaking operation, most medical institutions use manual methods to break the stopper rod, which is inefficient, strenuous, and prone to causing finger injuries to medical staff. A few medical institutions use pliers to break the stopper rod for convenience. However, in actual use, it has been found that the clamping force of the pliers on the stopper rod is difficult to control. During the operation, it is easy to apply excessive pressure, resulting in uneven force on the stopper rod and causing fragments to fly, which can easily damage the blood bag and cause unnecessary injury to the human body. Improvements are needed. Utility Model Content
[0004] Based on the above description, this utility model provides a blood bag stopper rod breaking pliers to solve the problem that existing breaking pliers are difficult to control the pressure applied during use and are prone to violent pressure operation.
[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A blood bag stopper rod breaking pliers includes a plier body 1 and a plier body 2 connected by a fulcrum shaft. Both the plier body 1 and the plier body 2 are provided with a frame. The frame includes a fixing rod and a protective frame. One end of the two fixing rods is respectively connected to the surface of the plier body 1 and the plier body 2. The two protective frames are respectively connected to the other end of the two fixing rods. A spring in a contracted state is provided between the inner sides of the two protective frames. A plier head is fixedly connected to the front end of the plier body 2.
[0006] Based on the above technical solution, the present invention can be further improved as follows.
[0007] Furthermore, the pliers head is located between pliers body one and pliers body two, one side of the pliers head is designed in a V shape, and the inner side of pliers body one, near the front end, is located inside the pliers head.
[0008] Furthermore, an opening is provided in the middle of the two opposite sides of the guard frame, and a metal rod is inserted between the two openings. Each end of the metal rod is provided with a limiting member, the diameter of which is larger than the diameter of the opening.
[0009] Furthermore, threaded holes are provided at both ends of the metal rod, and the limiting member includes a threaded rod and a connecting plate. One end of the threaded rod is fixedly connected to one side of the connecting plate, and the threaded rod is threaded into the threaded hole.
[0010] Furthermore, the connecting plate has a gripping bar on the side away from the threaded rod, and the gripping bar has a polygonal design.
[0011] Furthermore, buffer pads are connected to the outer rear ends of both clamp body one and clamp body two.
[0012] Furthermore, the diameter of the spring is adapted to the inner diameter of the guard frame.
[0013] Compared with the prior art, the technical solution of this application has the following beneficial technical effects: By installing frames on the first and second clamps and placing a spring between the two frames, medical personnel can effectively use the spring's rebound force to guide them to slowly apply pressure to break the blood bag stopper when using the breaking forceps. This reduces the risk of violent operation during the breaking process and is more conducive to safe use by medical personnel. Attached Figure Description
[0014] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the connection structure between the metal rod and the limiting component of this utility model; Figure 3 This utility model Figure 1 Enlarged structural diagram at point A in the middle.
[0015] The attached diagram lists the components represented by each number as follows: 1. Clamp body one; 2. Clamp body two; 3. Frame; 31. Fixing rod; 32. Protective frame; 321. Through port; 4. Spring; 5. Metal rod; 51. Threaded hole; 6. Limiting component; 61. Threaded rod; 62. Connecting plate; 63. Grip bar; 7. Buffer pad; 8. Pivot shaft; 9. Clamp head. Detailed Implementation
[0016] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.
[0017] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
[0018] Example Please refer to Figures 1-3 This embodiment provides a blood bag stopper breaking forceps, including a first forceps body 1 and a second forceps body 2 connected by a fulcrum shaft 8. Both the first forceps body 1 and the second forceps body 2 are provided with a frame 3 near the rear end. The two frame bodies 3 are close to each other. The frame body 3 includes a fixing rod 31 and a protective frame 32. One end of the two fixing rods 31 is respectively connected to the surface of the first forceps body 1 and the second forceps body 2. The two protective frames 32 are respectively connected to the other end of the two fixing rods 31. The cavities of the two protective frames 32 are arranged opposite each other. A spring 4 in a contracted state is provided between the inner sides of the two protective frames 32. The diameter of the spring 4 is adapted to the inner diameter of the protective frame 32 to ensure the stability of the spring 4 within the protective frame 32. A forceps head 9 is fixedly connected to the front end of the second forceps body 2. The forceps head 9 is located between the first forceps body 1 and the second forceps body 2. One side of the forceps head 9 has a V-shaped design. The inner side of the first forceps body 1 near the front end is located inside the forceps head 9.
[0019] In this embodiment, if it is necessary to break the stopper rod of the blood collection bag, the medical personnel can take the breaking forceps and use the rebound force of the spring 4 to unfold the front and rear ends of the forceps body 1 and the forceps body 2 outward about the fulcrum axis 8. Then, grasp the rear ends of the unfolded forceps body 1 and the forceps body 2, and bring the unfolded front ends close to the base of the stopper rod of the external blood collection bag, so that the stopper rod is between the forceps body 1 and the forceps head 9. Then, squeeze the rear ends of the forceps body 1 and the forceps body 2 towards the opposite side. During the pressing and grasping operation, the spring 4 generates a certain reaction force on the frame 3, which provides pressure prompts to the medical personnel during the grasping process, reducing the risk of violently breaking the stopper rod. Finally, the medical personnel can continue to slowly squeeze the forceps to achieve the clamping effect of the forceps body 1 and the forceps head 9. During the clamping process, the stopper rod contacts the convex surface of the V-shaped forceps head 9, and the inner side of the forceps body 1 continuously moves towards the inner side of the forceps head 9, causing the stopper rod to be deformed under pressure until the stopper rod is broken.
[0020] As an optional implementation, a through-hole 321 is provided in the middle of the side of the two protective frames 32 that are far apart. A metal rod 5 is inserted between the two through-holes 321. Each end of the metal rod 5 is provided with a limiting member 6. The diameter of the limiting member 6 is larger than the diameter of the through-hole 321, and the diameter of the through-hole 321 is larger than the diameter of the metal rod 5.
[0021] In this embodiment, the clamp body 1 and the clamp body 2 unfold outward. During the unfolding process, the limiting member 6 can limit the unfolding distance of the clamp body 1 and the clamp body 2, which makes it easier for medical personnel to control the unfolding distance between the clamp body 1 and the clamp body 2, while also preventing the spring 4 from falling off accidentally.
[0022] As an optional implementation, threaded holes 51 are provided at both ends of the metal rod 5, and the limiting member 6 includes a threaded rod 61 and a connecting plate 62. One end of the threaded rod 61 is fixedly connected to one side of the connecting plate 62, and the threaded rod 61 is threadedly connected to the threaded hole 51.
[0023] In this embodiment, the limiting member 6 is connected to the metal rod 5 via the threaded rod 61, which facilitates the initial assembly and use of the breaking pliers.
[0024] As an alternative implementation, the connecting plate 62 has a gripping bar 63 on the side away from the threaded rod 61, and the gripping bar 63 has a polygonal design.
[0025] In this embodiment, the polygonal gripper 63 is grasped to apply pressure, which facilitates the operator to pressurize and assemble the limiting member 6 and the metal rod 5.
[0026] As an optional implementation, both the rear outer sides of clamp body 1 and clamp body 2 are connected to a buffer pad 7.
[0027] In this embodiment, a buffer pad 7 is provided on the outer rear end of clamp body 1 and clamp body 2 to reduce the risk of the spring 4 rebounding and colliding with external objects after clamp body 1 and clamp body 2 are released.
[0028] When used herein, the singular forms of “a,” “an,” and “the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising,” “including,” or “having,” etc., specify the presence of the stated feature, whole, step, operation, component, part, or combination thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof.
[0029] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A blood bag stopper breaking forceps, comprising a first forceps body (1) and a second forceps body (2) connected by a fulcrum shaft (8), characterized in that: Both clamp body one (1) and clamp body two (2) are provided with a frame (3). The frame (3) includes a fixing rod (31) and a guard frame (32). One end of the two fixing rods (31) is connected to the surface of clamp body one (1) and clamp body two (2) respectively. The two guard frames (32) are connected to the other end of the two fixing rods (31) respectively. A spring (4) in a retracted state is provided between the inner sides of the two guard frames (32). The front end of clamp body two (2) is fixedly connected with a clamp head (9).
2. The blood bag stopper breaker according to claim 1, characterized in that: The pliers head (9) is located between the pliers body one (1) and the pliers body two (2). One side of the pliers head (9) is designed in a V shape. The inner side of the pliers body one (1) and the position near the front end are located inside the pliers head (9).
3. The blood bag stopper breaker according to claim 1, characterized in that: A through opening (321) is provided in the middle of the two opposite sides of the guard frame (32). A metal rod (5) is inserted between the two through openings (321). Each end of the metal rod (5) is provided with a limiting member (6). The diameter of the limiting member (6) is larger than the diameter of the through opening (321).
4. The blood bag stopper breaker according to claim 3, characterized in that: Both ends of the metal rod (5) are provided with threaded holes (51). The limiting member (6) includes a threaded rod (61) and a connecting plate (62). One end of the threaded rod (61) is fixedly connected to one side of the connecting plate (62), and the threaded rod (61) is threadedly connected to the threaded hole (51).
5. A blood bag stopper breaking pliers according to claim 4, characterized in that: The connecting plate (62) has a gripping bar (63) on the side away from the threaded rod (61), and the gripping bar (63) is polygonal in design.
6. The blood bag stopper breaker according to claim 1, characterized in that: Both the rear outer sides of the clamp body one (1) and the clamp body two (2) are connected to a buffer pad (7).
7. The blood bag stopper breaking pliers according to claim 1, characterized in that: The diameter of the spring (4) is adapted to the inner diameter of the guard frame (32).