Sealed connector

Abstract

The utility model relates to the technical field of medical instruments, and aims to solve the problem of how to reduce friction force between a centrifugal cylinder and a connector during rotation. The sealing connector comprises an outer sleeve, an inner sleeve and a sealing piece. The outer sleeve comprises a first connecting part and a second connecting part which are connected, and the first connecting part is used for fixedly connecting the input end of the centrifugal cylinder. The inner sleeve is fixedly connected with the second connecting part and provided with a containing cavity, and lubricating media are arranged on the inner wall of the containing cavity. The sealing part is arranged in the containing cavity and rotatably connected with the inner sleeve through a lubricating medium, the conveying pipe penetrates through the sealing part and extends into the input end of the centrifugal barrel, and the centrifugal barrel can be stressed to rotate and drive the inner sleeve to rotate relative to the sealing part. According to the sealing connector provided by the embodiment of the invention, the sealing element is rotatably connected with the inner sleeve through the lubricating medium, and the rotating friction force between the sealing element and the inner sleeve is reduced, so that the effect of reducing the friction force between the centrifugal cylinder and the connector when the centrifugal cylinder rotates is achieved, and the influence of the temperature rise of the connector on the temperature of centrifuged plasma is reduced.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and more specifically, to sealed connectors. Background Technology

[0002] Platelet-rich plasma (PRP) is plasma rich in platelets, obtained by centrifuging whole blood from animals or humans. PRP centrifuges are used for centrifuging blood and are widely used in the medical field. The inlet of the PRP centrifuge cartridge is connected to a connector that is rotatably connected to the cartridge and is sealed to it.

[0003] In existing technologies, the centrifuge cylinder generates strong friction with the connector during rotation, resulting in a high temperature of the connector and consequently, an adverse effect on the temperature of the plasma after centrifugation. How to solve this technical problem is a question that those skilled in the art need to consider. Utility Model Content

[0004] This application provides a sealed connector to address the problem of how to reduce the friction between the centrifuge tube and the connector during centrifuge rotation.

[0005] This application provides a sealing connector for connecting a delivery tube and a centrifuge cylinder. The sealing connector includes an outer sleeve, an inner sleeve, and a seal. The outer sleeve includes a first connecting portion and a second connecting portion connected together. The first connecting portion is used to fix the input end of the centrifuge cylinder. The inner sleeve is connected to the second connecting portion and is hollow, having a receiving cavity. The inner wall of the receiving cavity is provided with a lubricating medium. The seal is disposed in the receiving cavity and is rotatably connected to the inner sleeve via the lubricating medium. The delivery tube passes through the seal and extends into the input end of the centrifuge cylinder. The centrifuge cylinder can be rotated under force, causing the inner sleeve to rotate relative to the seal.

[0006] Compared to existing technologies, the sealing connector provided in this embodiment is fixedly connected to the input end of the centrifuge tube through the second connecting part of the outer sleeve, and the first connecting part is fixedly connected to the inner sleeve. The sealing element is disposed in the receiving cavity of the inner sleeve. The sealing element is rotatably connected to the inner sleeve through a lubricating medium, thereby reducing the rotational friction between the sealing element and the inner sleeve, so as to reduce the friction between the centrifuge tube and the connector when the centrifuge tube rotates, thereby reducing the impact of connector heating on the temperature of the plasma after centrifugation.

[0007] In one possible implementation, the inner wall of the receiving cavity of the inner sleeve is provided with a limiting ridge, the limiting ridge protruding radially from the inner wall of the receiving cavity, and the limiting ridge corresponding to the seal along the axial direction of the receiving cavity.

[0008] In one possible implementation, the limiting ridges are provided in multiple ways, and the multiple limiting ridges are distributed around the conveying pipe.

[0009] In one possible implementation, the seal includes at least two sealing rings spaced apart along the length of the delivery pipe, the sealing rings being fixedly connected to the circumferential surface of the delivery pipe.

[0010] In one possible implementation, the lubricating medium includes a solid medium and / or a liquid medium.

[0011] In one possible implementation, the conveying pipe is made of steel, and the inner sleeve comprises a rigid material.

[0012] In one possible implementation, the rigid material includes plastic or steel.

[0013] In one possible implementation, the inner sleeve includes a soft portion and a hard portion, with the hard portion connected to both ends of the soft portion along the length of the delivery pipe.

[0014] In one possible implementation, the outer cover comprises a soft material.

[0015] In one possible implementation, the soft material includes silicone, TPU, or TPE. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the centrifuge tube, delivery pipe, and sealing connector according to an embodiment of this application;

[0018] Figure 2 for Figure 1 A schematic diagram of the structure of a sealed connector;

[0019] Figure 3 for Figure 2 A three-dimensional view of the inner sleeve of the sealed connector;

[0020] Figure 4 for Figure 3 Top view of the inner sleeve of the sealed connector.

[0021] Explanation of key component symbols:

[0022] 1. Sealed connector; 11. Outer sleeve; 111. First connecting part; 112. First connecting hole; 113. Second connecting part; 114. Second connecting hole; 12. Inner sleeve; 121. Receiving cavity; 122. Limiting ridge; 13. Seal; 131. First sealing ring; 132. Second sealing ring; 14. Axial direction; 2. Delivery pipe; 3. Centrifuge cylinder; 31. Input end. Detailed Implementation

[0023] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0024] Some embodiments of this application are described in detail. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0025] Example

[0026] Please see Figures 1 to 4 As shown, this embodiment provides a sealing connector 1 for connecting a delivery pipe 2 and a centrifuge cylinder 3. The sealing connector 1 includes an outer sleeve 11, an inner sleeve 12, and a sealing element 13. The outer sleeve 11 includes a first connecting portion 111 and a second connecting portion 113 connected together. The first connecting portion 111 is used to fix the input end 31 of the centrifuge cylinder 3. The inner sleeve 12 is connected to the second connecting portion 113. The inner sleeve 12 is hollow and has a receiving cavity 121. The inner wall of the receiving cavity 121 is provided with a lubricating medium. The sealing element 13 is disposed in the receiving cavity 121. The sealing element 13 is rotatably connected to the inner sleeve 12 through the lubricating medium. The delivery pipe 2 passes through the sealing element 13 and extends into the input end 31 of the centrifuge cylinder 3. The centrifuge cylinder 3 can be rotated under force, which drives the inner sleeve 12 to rotate relative to the sealing element 13.

[0027] The sealing connector 1 provided in this embodiment is fixedly connected to the input end 31 of the centrifuge cylinder 3 through the second connecting part 113 of the outer sleeve 11, and the first connecting part 111 is fixedly connected to the inner sleeve 12. The sealing member 13 is disposed in the receiving cavity 121 of the inner sleeve 12. The sealing member 13 is rotatably connected to the inner sleeve 12 through a lubricating medium, thereby reducing the rotational friction between the sealing member 13 and the inner sleeve 12, so as to reduce the friction between the centrifuge cylinder 3 and the connector when rotating, thereby reducing the impact of the connector heating on the temperature of the plasma after centrifugation.

[0028] In this embodiment, the first connecting portion 111 of the outer jacket 11 is hollow and has a first communicating hole 112, and the second connecting portion 113 is hollow and has a second communicating hole 114, the diameter of the second communicating hole 114 being larger than that of the first communicating hole 112. The delivery tube 2 passes through the second communicating hole 114 from a position away from the centrifuge tube 3 and extends to the first communicating hole 112, with the outer surface of the delivery tube 2 fitting against the wall of the first communicating hole 112. The outer jacket 11 is made of a soft material, including silicone, TPU, or TPE. The first connecting portion 111 and the second connecting portion 113 are made of soft material, and the first communicating hole 112 is press-fitted with the input end 31 of the centrifuge tube 3, thereby fixing the outer jacket 11 to the input end 31 of the centrifuge tube 3. The delivery tube 2 extends from the first communicating hole 112 into the input end 31 of the centrifuge tube 3, thereby communicating with the centrifuge tube 3.

[0029] When the centrifuge tube 3 rotates, it drives the outer sleeve 11 to rotate, which in turn drives the inner sleeve 12 to rotate. The inner sleeve 12 is rotatably connected to the seal 13 via a lubricating medium. The seal 13 is fixedly connected to the delivery pipe 2 and is used to seal the circumferential surface of the delivery pipe 2. The seal 13 is rotatably connected to the inner sleeve 12 via a lubricating medium to reduce the rotational friction between the seal 13 and the inner sleeve 12. This arrangement not only reduces the impact of connector friction heating on the temperature of the plasma after centrifugation but also reduces friction noise.

[0030] In one possible implementation, the inner wall of the receiving cavity 121 of the inner sleeve 12 is provided with a limiting ridge 122, which protrudes radially from the inner wall of the receiving cavity 121 and corresponds to the sealing member 13 along the axial direction 14 of the receiving cavity 121.

[0031] In this embodiment, multiple limiting ridges 122 are provided, and the multiple limiting ridges 122 are evenly distributed along the circumferential direction on the inner wall of the receiving cavity 121. The limiting ridges 122 are used to restrict the movement of the sealing member 13 along the axial direction 14, so that the sealing member 13 rotates stably within the receiving cavity 121, thereby reducing the friction between the sealing member 13 and the inner sleeve 12 when the centrifuge cylinder 3 rotates, thereby reducing the temperature rise of the sealing connector 1.

[0032] In one possible implementation, multiple limiting ridges 122 are provided, and the multiple limiting ridges 122 are distributed around the conveying pipe 2.

[0033] In this embodiment, multiple limiting ridges 122 together restrict the movement of the seal 13 along the axial direction 14, so that the periphery of the seal 13 is subjected to uniform force, reducing the deformation of the seal 13, which is conducive to the stable rotation of the seal 13 in the receiving cavity 121, thereby reducing the friction between the seal 13 and the inner sleeve 12 when the centrifuge 3 rotates, thereby reducing the temperature rise of the sealing connector 1.

[0034] In one possible implementation, the seal 13 includes at least two sealing rings spaced apart along the length of the delivery pipe 2, and the sealing rings are fixedly connected to the circumferential surface of the delivery pipe 2.

[0035] In this embodiment, the sealing element 13 includes a first sealing ring 131 and a second sealing ring 132. The first sealing ring 131 and the second sealing ring 132 are spaced apart along the length of the conveying pipe 2, and are fixedly connected to the circumferential surface of the conveying pipe 2. Two layers of limiting ribs 122 are spaced apart along the height direction, with each layer corresponding to the first sealing ring 131 and the second sealing ring 132. The first sealing ring 131 is positioned above the second sealing ring 132, and the second sealing ring 132 is positioned between the limiting rib 122 and the bottom wall of the receiving cavity 121. The sealing connector 1 achieves double sealing through the first sealing ring 131 and the second sealing ring 132, thereby improving the sealing performance of the sealing element 13 on the conveying pipe 2.

[0036] The first sealing ring 131 and the second sealing ring 132 are rotatably connected to the inner sleeve 12 through a lubricating medium. The first sealing ring 131 and the second sealing ring 132 are fixedly connected to the circumferential surface of the conveying pipe 2, which helps to improve the stability of the relative rotation between the conveying pipe 2 and the centrifuge cylinder 3, and helps the first sealing ring 131 and the second sealing ring 132 to rotate stably in the receiving cavity 121, so as to reduce the friction between the sealing element 13 and the inner sleeve 12 when the centrifuge cylinder 3 rotates, thereby reducing the temperature rise of the sealing connector 1.

[0037] Optionally, the seal 13 may also include multiple sealing rings, which are spaced apart along the length of the conveying pipe 2 and fixedly connected to the circumferential surface of the conveying pipe 2 to improve the sealing performance of the seal 13 on the conveying pipe 2.

[0038] In one possible implementation, the lubricating medium includes a solid medium and / or a liquid medium.

[0039] In this embodiment, the liquid medium includes, but is not limited to, lubricating fluid, and the solid medium includes, but is not limited to, lubricating grease.

[0040] In one possible implementation, the conveying pipe 2 is made of steel, and the inner sleeve 12 includes a rigid material, which may be plastic or steel.

[0041] In this embodiment, the material of the delivery pipe 2 is steel, and the inner sleeve 12 is made of plastic or steel. This arrangement helps to reduce the friction between the delivery pipe 2 and the inner sleeve 12, thereby reducing the temperature rise of the sealing connector 1.

[0042] In one possible implementation, the inner sleeve 12 includes a soft part and a hard part, with the hard part connected to both ends of the soft part along the length of the conveying pipe 2.

[0043] In this embodiment, the inner sleeve 12 is made of a combination of soft and hard materials. The inner sleeve 12 includes a soft part and a hard part. The two ends of the soft part are hard parts. During high-speed centrifugation, the soft part expands outward under the action of centrifugal force, which can reduce the axial pressure of the lubricating medium inside the inner sleeve 12 on the seal 13, thereby reducing the risk of the seal 13 falling off and the lubricating medium leaking.

[0044] The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the above preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions to the technical solutions of this application should not depart from the spirit and scope of the technical solutions of this application.

Claims

1. A sealed connector for connecting a delivery pipe and a centrifuge cylinder, characterized in that, The sealed connector includes: The outer casing includes a first connecting part and a second connecting part connected together, wherein the first connecting part is used to fix the input end of the centrifuge tube; An inner sleeve is connected to the second connecting part. The inner sleeve is hollow and has a receiving cavity. The inner wall of the receiving cavity is provided with a lubricating medium. A sealing element is disposed in the receiving cavity. The sealing element is rotatably connected to the inner sleeve through the lubricating medium. The delivery pipe passes through the sealing element and extends into the input end of the centrifuge tube. The centrifuge tube can be rotated under force and drive the inner sleeve to rotate relative to the sealing element.

2. The sealed connector according to claim 1, characterized in that: The inner wall of the receiving cavity of the inner sleeve is provided with a limiting ridge, which protrudes radially from the inner wall of the receiving cavity and corresponds to the sealing element along the axial direction of the receiving cavity.

3. The sealed connector according to claim 2, characterized in that: The limiting ridges are provided in multiple ways, and the multiple limiting ridges are distributed around the conveying pipe.

4. The sealed connector according to claim 1, characterized in that: The sealing element includes at least two sealing rings spaced apart along the length of the conveying pipe, and the sealing rings are fixedly connected to the circumferential surface of the conveying pipe.

5. The sealed connector according to claim 1, characterized in that: The lubricating medium includes solid media and / or liquid media.

6. The sealed connector according to claim 1, characterized in that: The conveying pipe is made of steel, and the inner sleeve is made of a rigid material.

7. The sealed connector according to claim 6, characterized in that: The rigid material includes plastic or steel.

8. The sealed connector according to claim 1, characterized in that: The inner sleeve includes a soft part and a hard part, with the hard part connected to both ends of the soft part along the length of the conveying pipe.

9. The sealed connector according to claim 1, characterized in that: The outer cover comprises a soft material.

10. The sealed connector according to claim 9, characterized in that: The soft material includes silicone, TPU, or TPE.

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