Centrifugal tube for medical examination

Abstract

The utility model discloses a centrifugal tube for medical examination. The centrifugal tube comprises a tube body, an annular extending groove is formed in the plugging cover, a threaded groove is formed in the extending groove, an annular extending part is further arranged on the plugging cover, an annular rubber abutting part is arranged at the first end of the extending part, an abutting part extending into the extending groove is arranged at the second end of the extending part, and the abutting part is attached to the plane of the top end of the pipe body. The rubber abutting piece is attached to the inner wall of the pipe body. By utilizing the extension part on the plugging cover, when the plugging cover and the tube body are rotationally closed in a covering manner, the extension part is wholly pressed, so that the rubber propping piece on the extension part is propped against and expanded on the tube wall on the inner side of the tube body to form sealing, and the problem that a test solution stored in the tube body overflows is avoided; even if the pipe body is placed in a centrifugal machine to be centrifugally shaken to generate radial deformation, the rubber abutting piece on the extending part still abuts against and expands on the inner side pipe wall of the pipe body due to deformation to form sealing, and the stable sealing effect in the centrifugal process is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifuge tubes, in particular to a centrifuge tube for medical examination. Background Art

[0002] Centrifuge tubes are one of the most basic and commonly used devices in experiments in life sciences, especially in the field of molecular biology.

[0003] According to publication number CN214863683U, publication (announcement) date: 2021.11.26, a centrifuge tube for medical examination is disclosed, including a centrifuge tube, the centrifuge tube is a funnel-shaped hollow structure, and an opening is opened at the upper end of the centrifuge tube, a connecting tube is fixedly connected to the opening at the upper end of the centrifuge tube, and a tube cover is threadedly connected to the outer side of the connecting tube, a flange is installed at the lower end of the outer side of the centrifuge tube, the flange is a circular ring structure, and the inner arc surface of the flange is fixedly connected to the outer surface of the centrifuge tube, a rotating shaft is installed at the edge of the side of the flange, one side of the rotating shaft is fixedly connected to the flange, and the other side of the rotating shaft is rotatably connected to a connecting rod. The centrifuge tube for medical examination uses a centrifuge tube to hold liquid, uses the upper end connecting tube and the tube cover to be threadedly connected to prevent the internal liquid from spilling, uses a leather pad to prevent liquid overflow, improves overall safety, and uses a combination of a connecting rod, a support pad, a rotating shaft and a flange to achieve autonomous standing when the centrifuge tube is placed vertically.

[0004] In the prior art including the above-mentioned patent, a tube cover is threadedly connected to the upper end of a centrifuge tube so that the tube cover can shield and seal the inside of the centrifuge tube. When the centrifuge tube is placed in a centrifuge for centrifugal shaking, the centrifuge tube is easily radially deformed due to the movement, and a gap is generated in the threaded connection between the tube cover and the centrifuge tube due to the deformation of the centrifuge tube, which is prone to leakage. Utility Model Content

[0005] In the above-mentioned prior art, when the centrifuge tube is placed in a centrifuge for centrifugal shaking, the centrifuge tube is easily deformed radially due to the movement, and the threaded connection between the tube cover and the centrifuge tube produces a gap due to the deformation of the centrifuge tube, which is prone to leakage.

[0006] The utility model provides a centrifuge tube for medical examination, and the specific technical scheme is as follows: A centrifuge tube for medical examination, comprising:

[0007] A tube body, the outer side of the opening of which is provided with a threaded portion;

[0008] A plugging cover, on which an annular insertion groove is provided, in which a threaded groove is provided, and the plugging cover is also provided with an annular extension portion, on the first end of the extension portion an annular rubber resistance piece is provided, and on the second end of the extension portion an resistance portion extending into the insertion groove is provided, the resistance portion is in contact with the top plane of the tube body, and the rubber resistance piece is in contact with the inner wall of the tube body;

[0009] The tube body is installed in the extending groove through the threaded part and the threaded groove to push the deformation of the resistance part, and the extension part is deformed to make the rubber resistance part resist and expand on the inner wall of the tube body to form a seal.

[0010] Preferably, a matching groove is provided on the abutment portion, and the tube body is threadedly connected to the insertion groove so that the top plane of the tube body pushes the abutment portion to deform and fit into the matching groove, and a buffer cavity is formed in the insertion groove.

[0011] Preferably, the cross section of the extension portion is arc-shaped to form an arc-shaped concave arc groove, and the extension portion is driven to deform so that the concave arc groove fits the inner wall of the tube body.

[0012] Preferably, the blocking cover is provided with a blocking cross bar connected to the extension part, the blocking cross bar is provided with a protruding column part, and the blocking cover is provided with a rubber covering layer for covering the protruding column part, the extension part is driven to deform so that the rubber resistance piece contacts the inner wall of the tube body, and the protruding column part moves vertically following the deformation of the extension part.

[0013] Preferably, the rubber abutment is a medical rubber part.

[0014] Preferably, the rubber covering layer is made of medical rubber.

[0015] Preferably, the rubber covering layer is transparent.

[0016] In the above technical scheme, a centrifuge tube for medical examination provided by the utility model has the following beneficial effects: utilizing the extension part on the sealing cover, when the sealing cover and the tube body are rotated to cover, the resistance part is deformed upward, and the extension part is generally pressurized so that the rubber resistance part thereon resists and expands against the inner tube wall of the tube body to form a seal, thereby avoiding the problem of overflow of the test solution stored in the tube body; even if the tube body is placed in a centrifuge and shaken centrifugally to produce radial deformation, the rubber resistance part on the extension part still resists and expands against the inner tube wall of the tube body due to deformation to form a seal, thereby ensuring a stable sealing effect during the centrifugation process; secondly, due to the elasticity of the extension part itself, the extension part applies pressure to the end of the tube body to further improve the tightness of the connection between the threaded part and the thread groove, thereby further reducing the risk of the sealing cover falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0018] Figure 1 A schematic diagram of the overall structure provided for an embodiment of the utility model;

[0019] Figure 2 A schematic cross-sectional view of the explosion structure of the blocking cover and the tube body provided in an embodiment of the utility model;

[0020] Figure 3 A structural schematic diagram of the plugging cover and the pipe body when connected is provided for an embodiment of the utility model.

[0021] Description of reference numerals:

[0022] 1. Tube body; 11. Threaded portion; 2. Sealing cover; 21. Insertion groove; 211. Threaded groove; 22. Extension portion; 23. Interference portion; 231. Matching groove; 25. Concave arc groove; 26. Sealing cross bar; 261. Extending column portion; 3. Rubber interference piece; 4. Rubber covering layer; 5. Buffer cavity. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0024] like Figure 1-3 As shown, a centrifuge tube for medical testing, comprising:

[0025] The tube body 1 has a threaded portion 11 disposed on the outer side of its opening;

[0026] The plugging cover 2 is provided with an annular insertion groove 21, and a threaded groove 211 is provided in the insertion groove 21. The plugging cover 2 is also provided with an annular extension portion 22, and an annular rubber resistance member 3 is provided on the first end of the extension portion 22, and a resistance portion 23 extending into the insertion groove 21 is provided on the second end of the extension portion 22, and the resistance portion 23 is in contact with the top plane of the tube body 1, and the rubber resistance member 3 is in contact with the inner wall of the tube body 1;

[0027] The tube body 1 is installed in the insertion groove 21 through the threaded portion 11 and the threaded groove 211 to push the abutment portion 23 to deform, and the extension portion 22 is deformed to make the rubber abutment member 3 abut and expand against the inner wall of the tube body 1 to form a seal.

[0028] Specifically, Figure 2 As shown, a threaded portion 11 is provided on the outer side of the opening of the tube body 1, and a threaded groove 211 is provided in the extension groove 21, and the lower end of the extension portion 22 is the first end, and the upper end is the second end. A rubber resistance member 3 is provided at the lower end of the extension portion 22, and a resistance portion 23 is provided at the upper end. The resistance portion 23 extends into the extension groove 21 along the diameter direction of the centrifuge tube. When the plugging cover 2 is rotated and covered on the tube body 1 through the threaded portion 11 and the threaded groove 211, the top plane of the tube body 1 gradually enters the extension groove 21 to push the resistance portion 23 to deform upward, so that the extension portion 22 is generally compressed so that the first end of the extension portion 22 is close to the inner wall of the tube body 1. When the plugging cover 2 is covered When fitted on the tube body 1, the extension portion 22 is deformed until the rubber resistance piece 3 thereon resists and expands against the inner tube wall of the tube body 1 to form a seal, thereby avoiding the problem of overflow of the test solution stored in the tube body 1. Even if the tube body 1 is placed in a centrifuge and centrifugally shaken to produce radial deformation, the rubber resistance piece 3 on the extension portion 22 still resists and expands against the inner tube wall of the tube body 1 due to the deformation to form a seal, thereby ensuring a stable sealing effect during the centrifugation process. Secondly, due to the elasticity of the extension portion 22 itself, the extension portion 22 applies pressure to the end of the tube body 1 to further improve the tightness of the connection between the threaded portion 11 and the thread groove 211, thereby further reducing the risk of the sealing cover 2 falling off.

[0029] In the above technical solution, the extension part 22 on the sealing cover 2 is utilized. When the sealing cover 2 is rotated and covered with the tube body 1, the resistance part 23 is deformed upward, and the extension part 22 is generally pressurized so that the rubber resistance part 3 thereon is in resistance to and expands to form a seal with the inner tube wall of the tube body 1, thereby avoiding the problem of overflow of the test solution stored in the tube body 1. Even if the tube body 1 is placed in a centrifuge and centrifugally shaken to produce radial deformation, the rubber resistance part 3 on the extension part 22 still contacts and expands to form a seal with the inner tube wall of the tube body 1 due to the deformation, thereby ensuring a stable sealing effect during the centrifugation process. Secondly, due to the elasticity of the extension part 22 itself, the extension part 22 applies pressure to the top plane of the tube body 1 to further improve the tightness of the connection between the threaded part 11 and the thread groove 211, thereby further reducing the risk of the sealing cover 2 falling off.

[0030] As a further embodiment of the present invention, a matching groove 231 is provided on the resistance portion 23, and the tube body 1 is threadedly connected to the insertion groove 21 so that the top plane of the tube body 1 pushes the resistance portion 23 to deform and fit into the matching groove 231, and a buffer cavity 5 is formed in the insertion groove 21.

[0031] Specifically, Figure 3As shown, a matching groove 231 is provided on the resistance portion 23. When the plugging cover 2 is connected to the tube body 1, the end of the tube body 1 gradually enters the insertion groove 21 to push the resistance portion 23 to deform and deflect, until the resistance portion 23 is deflected to the point where the matching groove 231 thereon is completely in contact with the top plane of the tube body 1. At this time, a buffer cavity 5 is formed in the insertion groove 21. The buffer cavity 5 is located between the threaded connection between the tube body 1 and the plugging cover 2 and the inner cavity of the tube body 1 to play a buffering role. Even if the test liquid in the tube body 1 seeps out from between the extension portion 22 and the tube wall of the tube body 1 due to pressure, the test liquid is easily stored in the buffer cavity 5 first and will not leak out directly, thereby improving hygiene. Secondly, the resistance portion 23 is in contact with the top plane of the tube body 1 through the matching groove 231 to further improve the sealing effect on the inner cavity of the tube body 1.

[0032] As an embodiment further provided by the present invention, the cross section of the extension portion 22 is arc-shaped to form an arc-shaped concave arc groove 25 , and the extension portion 22 is driven to deform so that the concave arc groove 25 fits the inner wall of the tube body 1 .

[0033] Specifically, the cross section of the extension portion 22 is arc-shaped to form an arc-shaped concave arc groove 25, such as Figure 3 As shown, when the blocking cover 2 is installed at the end of the tube body 1, the extension portion 22 is squeezed and deformed so that the rubber resistance piece 3 is abutted, expanded and sealed against the inner wall of the tube body 1. At this time, the opening of the annular concave arc groove 25 completely surrounds the inner wall of the tube body 1, thereby forming an airtight cavity. The presence of the concave arc groove 25 is utilized to form an airtight cavity when the blocking cover 2 is installed at the top end of the tube body 1, thereby further improving the installation stability of the blocking cover 2 installed on the tube body 1, and secondly, it can also further improve the sealing effect of the blocking cover 2 on the inner cavity of the tube body 1.

[0034] As an embodiment further provided by the present invention, a blocking cross bar 26 connected to the extension portion 22 is provided on the blocking cover 2, a protruding column portion 261 is provided on the blocking cross bar 26, and a rubber covering layer 4 for covering the protruding column portion 261 is provided on the blocking cover 2, the extension portion 22 is driven to deform so that the rubber resistance member 3 contacts the inner wall of the tube body 1, and the protruding column portion 261 moves vertically following the deformation of the extension portion 22.

[0035] Specifically, Figure 3As shown, a blocking crossbar 26 is provided in the middle of the extension portion 22, and a protruding column portion 261 is provided on the blocking crossbar 26. When the blocking cover 2 is covered on the tube body 1 to seal the inner cavity of the tube body 1, the extension portion 22 is deformed so that the rubber abutment 3 abuts against the inner wall of the tube body 1, and the blocking crossbar 26 follows the deformation of the extension portion 22 to drive the protruding column portion 261 to move downward. If the test solution in the inner cavity of the tube body 1 produces a large air pressure change during the centrifugation process, the air pressure will cause the blocking crossbar 26 to drive the protruding column portion 261 to move vertically, and then the vertical height can be driven by the protruding column portion 261 to judge the air pressure change in the inner cavity of the tube body 1, thereby improving the safety of use. Secondly, the rubber covering layer 4 roughly covers the protruding column portion 261, and the rubber covering layer 4 should be transparent to facilitate the observation of the vertical height of the protruding column portion 261. Secondly, the extended column 261 can be manually pressed to drive the extension part 22 to deform through the blocking cross piece 26, thereby ensuring that the rubber resistance member 3 can form a good sealing effect on the inner cavity of the tube body 1 and ensure the stability of use.

[0036] As an embodiment further provided by the present invention, the rubber abutment 3 is a medical rubber part.

[0037] As an embodiment further provided by the present invention, the rubber covering layer 4 is made of medical rubber.

[0038] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A centrifuge tube for medical examination, characterized in that: include: A tube body (1) having an opening outside thereof provided with a threaded portion (11); A plugging cover (2) is provided with an annular insertion groove (21), a threaded groove (211) is provided in the insertion groove (21), and the plugging cover (2) is also provided with an annular extension portion (22), an annular rubber abutment (3) is provided on the first end of the extension portion (22), and an abutment portion (23) extending into the insertion groove (21) is provided at the second end of the extension portion (22), the abutment portion (23) is in contact with the top plane of the tube body (1), and the rubber abutment (3) is in contact with the inner wall of the tube body (1); The tube body (1) is installed in the insertion groove (21) through the threaded portion (11) and the threaded groove (211) to push the abutment portion (23) to deform, and the extension portion (22) is deformed to make the rubber abutment member (3) abut and expand against the inner wall of the tube body (1) to form a seal.

2. A centrifuge tube for medical examination according to claim 1, characterized in that: The abutment portion (23) is provided with a matching groove (231), and the tube body (1) is threadedly connected to the insertion groove (21) so that the top plane of the tube body (1) pushes the abutment portion (23) to deform and fit into the matching groove (231), and a buffer cavity (5) is formed in the insertion groove (21).

3. A centrifuge tube for medical examination according to claim 2, characterized in that: The cross section of the extension portion (22) is in the shape of an arc to form an arc-shaped concave arc groove (25), and the extension portion (22) is driven to deform so that the concave arc groove (25) fits the inner wall of the tube body (1).

4. A centrifuge tube for medical examination according to claim 3, characterized in that: The blocking cover (2) is provided with a blocking crosspiece (26) connected to the extension part (22), the blocking crosspiece (26) is provided with a protruding column part (261), and the blocking cover (2) is provided with a rubber covering layer (4) for covering the protruding column part (261), the extension part (22) is driven to deform so that the rubber abutment (3) abuts against the inner wall of the tube body (1), and the protruding column part (261) moves vertically following the deformation of the extension part (22).

5. A centrifuge tube for medical examination according to claim 1, characterized in that: The rubber abutment (3) is a medical rubber part.

6. A centrifuge tube for medical examination according to claim 4, characterized in that: The rubber covering layer (4) is a medical rubber part.

7. A centrifuge tube for medical examination according to claim 6, characterized in that: The rubber covering layer (4) is transparent.

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