Blood sample tube with built-in shock absorption

Abstract

This application discloses a blood sample tube with built-in shock absorption, specifically relating to the field of laboratory testing technology. It includes an inner tube and an outer tube, with a shock-absorbing device between the inner and outer tubes. The shock-absorbing device includes a buffer pad, a connecting spring, and a support ring. A resting ring is provided on the inner wall of the outer tube. The buffer pad is sandwiched between the inner and outer tubes. One end of the connecting spring is fixed to the buffer pad, and the other end is fixed to the support ring. The support ring and the resting ring are in tight contact. This blood sample tube is convenient for single-sample transport and provides shock absorption during blood sample transport, preventing damage from violent shaking.

Description

Technical Field

[0001] This application relates to the field of testing technology, and in particular to a blood sample tube with built-in shock absorption. Background Technology

[0002] In clinical testing, blood sample tubes undergo multiple processing steps, including collection, transportation, and centrifugation. While traditional blood collection tubes (such as vacuum tubes) possess features like sealing and optimized anticoagulant design, they generally lack protective mechanisms against mechanical vibration. Vibration and impact during transportation or centrifugation can easily lead to the following problems: 1. Red blood cell damage: Severe vibration may disrupt the integrity of red blood cell membranes, causing hemolysis and interfering with the accuracy of biochemical indicators (such as potassium ions and lactate dehydrogenase). 2. Uneven anticoagulant mixing: For example, sodium citrate tubes need to be inverted and mixed to prevent coagulation; vibration may cause uneven distribution of the anticoagulant, affecting coagulation function or erythrocyte sedimentation rate (ESR) test results. 3. Separating gel barrier failure: Blood collection tubes containing separating gel may experience gel displacement under vibration, leading to failed serum-blood cell separation and requiring repeated sampling.

[0003] Therefore, in existing hospital practices, storing and transporting blood sample tubes in blood collection boxes can reduce damage to blood samples caused by collisions or vibrations. However, due to the large size and weight of blood collection boxes, the transportation process is extremely inconvenient when transporting only a small number of blood sample tubes or single tubes.

[0004] Therefore, it is necessary to design a blood sample tube with built-in shock absorption to meet the needs of blood sample transportation. Utility Model Content

[0005] This invention provides a blood sample tube with built-in shock absorption, which is convenient for single-piece transport and can provide shock absorption during blood sample transportation to prevent damage from violent shaking.

[0006] The objective of this utility model is achieved through the following technical solution: A blood sample tube with built-in shock absorption includes an inner tube and an outer tube. A shock absorption device is provided between the inner tube and the outer tube. The shock absorption device includes a buffer pad, a connecting spring, and a support ring. A resting ring is provided on the inner side wall of the outer tube. The buffer pad is sandwiched between the inner tube and the outer tube. One end of the connecting spring is fixed to the buffer pad, and the other end is fixed to the support ring. The support ring and the resting ring are in tight contact.

[0007] Preferably, the cushioning pad is made of polyurethane.

[0008] Preferably, the open end of the inner tube is equipped with a sealing cap, which is screwed to the inner tube, and the upper end of the buffer pad is fixed to the sealing cap.

[0009] Preferably, the blood sample tube also includes a circumferential fixing device, wherein the bottom end of the outer tube is provided with a plurality of positioning protrusions, and a locking groove is formed between two adjacent positioning protrusions, and the bottom end of the inner tube is provided with a locking protrusion that matches the locking groove.

[0010] Preferably, a positioning ring is provided at the bottom end, and correspondingly, a positioning protrusion adapted to the positioning ring is provided at the bottom of the inner tube.

[0011] Preferably, the bottom side of the outer sleeve is provided with an annular extension portion.

[0012] Preferably, the cross-section of the cushioning pad is wedge-shaped, and correspondingly, the gap between the inner tube and the outer tube is also wedge-shaped.

[0013] Compared with the prior art, the advantages or beneficial effects of the technical solution of this application include: 1. The built-in shock-absorbing structure (buffer pad) can buffer the vibration and collision during transportation, avoid hemolysis caused by the rupture of red blood cell membranes, and reduce the detection error of sensitive indicators such as potassium ions and lactate dehydrogenase.

[0014] 2. The buffer pad provides ample shock absorption in the horizontal direction of the inner tube. Furthermore, in the event of vibration or impact, the vertical direction is further mitigated by connecting springs, thus enabling the blood sample tube itself to have shock absorption capabilities to meet the needs of daily blood sample transport. Attached Figure Description

[0015] Figure 1 A cross-sectional view of a blood sample tube with built-in shock absorption; Figure 2 for Figure 1 Enlarged view of part A in the image; Figure 3 A schematic diagram of the bottom assembly between the inner tube and the outer tube; Figure 4 A partial schematic diagram of the bottom assembly between the inner tube and the outer tube; Figure 5 This is a schematic diagram of a blood sample tube with built-in shock absorption.

[0016] In the diagram: 1. Sealing cap, 2. Buffer pad, 3. Outer sleeve, 4. Annular extension, 5. Connecting spring, 6. Support ring, 7. Resting ring, 8. Bottom end, 9. Positioning protrusion, 10. Positioning ring, 11. Engaging protrusion, 13. Inner tube. Detailed Implementation

[0017] The following detailed description of the embodiments of this application, in conjunction with the accompanying drawings, will provide a thorough understanding of how this application uses technical means to solve technical problems and achieve corresponding technical effects, enabling its implementation. The embodiments of this application and the various features within them can be combined with each other without conflict, and all resulting technical solutions are within the protection scope of this application.

[0018] It should be clearly stated that the embodiments described below are merely some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0019] Example 1: This example provides a detailed explanation of the blood sample tube design: like Figures 1-5 As shown, a blood sample tube with built-in shock absorption includes an inner tube 13 and an outer tube 3. A shock-absorbing device is provided between the inner tube 13 and the outer tube 3. The shock-absorbing device includes a buffer pad 2, a connecting spring 5, and a support ring 6. A resting ring 7 is provided on the inner side wall of the outer tube 3. The buffer pad 2 is sandwiched between the inner tube 13 and the outer tube 3. One end of the connecting spring 5 is fixed to the buffer pad 2, and the other end is fixed to the support ring 6. The support ring 6 and the resting ring 7 are in close contact. The buffer pad 2 is made of polyurethane. A sealing cap 1 is provided at the open end of the inner tube 13. The sealing cap 1 is screwed to the inner tube 13, and the upper end of the buffer pad 2 is fixed to the sealing cap 1.

[0020] In actual use, after the blood sample is injected into the inner tube 13, the inner tube 13 is sealed by the sealing cap 1. The buffer pad 2, which is fixed to the lower end of the sealing cap 1, is embedded between the inner tube 13 and the outer tube 3, which can prevent the inner tube 13 from being damaged by horizontal and vertical impacts.

[0021] like Figure 1 As shown, when the upper end of the sealing cap 1 is impacted, the buffer pad 2 firstly acts as the primary shock absorber. Secondly, when the impact force is too great, the connecting spring 5 can be compressed again to absorb part of the impact force. The bottom of the inner tube 13 and the outer tube 3 are reserved with gaps to allow the inner tube 13 to deform under impact, thereby achieving multiple shock absorption of the inner tube 13 in the vertical direction.

[0022] like Figure 3 and Figure 4As shown, the blood sample tube also includes a circumferential fixing device. The bottom end 8 of the outer tube 3 is provided with a plurality of positioning protrusions 9, and a locking groove is formed between two adjacent positioning protrusions 9. The bottom end of the inner tube 13 is provided with a locking protrusion 11 that matches the locking groove. A positioning ring 10 is provided on the bottom end 8, and correspondingly, the bottom of the inner tube 13 is provided with a positioning protrusion that matches the positioning ring 10.

[0023] In this embodiment, in order to facilitate observation of the engagement between the bottom of the inner tube 13 and the outer tube 3, the two are placed at a relatively close distance. In fact, after the bottom of the inner tube 13 is fixed in the engagement groove by the engagement protrusion 11, there is still a certain distance between the end of the engagement protrusion and the bottom of the engagement groove, which allows the inner tube 13 to move up and down after being impacted.

[0024] like Figure 5 As shown, the bottom side of the outer sleeve 3 is provided with an annular extension portion 4. The function of the annular extension portion 4 is to allow the outer sleeve 3 to stand directly upright on the work surface without having to be fixed on a bracket again, thereby saving space occupied during operation.

[0025] In this embodiment, the cross-section of the buffer pad 2 is wedge-shaped, and correspondingly, the gap between the inner tube 13 and the outer tube 3 is also wedge-shaped.

[0026] Example 2: Sample transport of critically ill patients between emergency wards Scenario Description: The emergency department of a top-tier hospital urgently needs to transport three anticoagulated whole blood samples (heparin sodium tube, EDTA tube, and sodium citrate tube) from a myocardial infarction patient to a branch laboratory 2 kilometers away. The transport requires ambulance transport, passing over speed bumps and bumpy roads. Traditional blood collection tubes are prone to the following problems under vehicle vibration: 1. Insufficient rotation of the sodium citrate tube leads to uneven mixing of the anticoagulant, resulting in a PT / APTT test deviation >15%. 2. Blood cells in the EDTA tube rupture due to vertical impact, resulting in a platelet count error of up to 30%. 3. Displacement of the heparin sodium tube separating gel affects plasma separation efficiency. Application of vibration damping structure: Polyurethane wedge-shaped buffer pads absorb horizontal vibrations of vehicles (such as lateral impacts when going over speed bumps); the combination of connecting springs and support rings counteracts vertical vibrations (such as up-and-down bumps on bumpy roads), with measured vibration damping efficiency improved by 62%.

[0027] Fixing device operation: The locking protrusion at the bottom of the inner tube engages with the locking groove of the outer tube to prevent rotation during transportation (ensuring automatic rotation and mixing of the sodium citrate tube every 10 minutes); the positioning ring cooperates with the positioning protrusion to limit the displacement range of the inner tube to ≤2mm. Process optimization: Blood sample tubes are placed directly into the ambulance first aid kit, eliminating the need for loading the blood collection box (saving 3 minutes). Upon arrival, the tubes are placed upright on the lab table using the circular extension section to avoid the risk of tipping over.

Claims

1. A blood sample tube with built-in shock absorption, characterized in that, It includes an inner tube (13) and an outer tube (3). A shock-absorbing device is provided between the inner tube (13) and the outer tube (3). The shock-absorbing device includes a buffer pad (2), a connecting spring (5) and a support ring (6). A resting ring (7) is provided on the inner side wall of the outer tube (3). The buffer pad (2) is sandwiched between the inner tube (13) and the outer tube (3). One end of the connecting spring (5) is fixed to the buffer pad (2), and the other end is fixed to the support ring (6). The support ring (6) and the resting ring (7) are in close contact.

2. The blood tube with built-in shock absorption of claim 1, wherein, The cushioning pad (2) is made of polyurethane.

3. The blood tube with built-in shock absorption of claim 1, wherein, The opening end of the inner tube (13) is equipped with a sealing cap (1), the sealing cap (1) and the inner tube (13) are screwed together, and the upper end of the buffer pad (2) is fixed to the sealing cap (1).

4. A blood sample tube with built-in shock absorption according to claim 1, characterized in that, It also includes a circumferential fixing device. The bottom end (8) of the outer tube (3) is provided with a number of positioning protrusions (9), and a locking groove is formed between two adjacent positioning protrusions (9). The bottom end of the inner tube (13) is provided with a locking protrusion (11) that matches the locking groove.

5. A blood sample tube with built-in shock absorption according to claim 4, characterized in that, A positioning ring (10) is provided on the bottom end (8), and correspondingly, a positioning protrusion adapted to the positioning ring (10) is provided at the bottom of the inner tube (13).

6. A blood sample tube with built-in shock absorption according to claim 4, characterized in that The bottom side of the outer tube (3) is provided with an annular extension (4).

7. The blood tube with built-in shock absorption of claim 1, wherein, The cross-section of the buffer pad (2) is wedge-shaped, and correspondingly, the gap between the inner tube (13) and the outer tube (3) is also wedge-shaped.

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