CN217909118U

CN217909118U - Blood separator

Info

Publication number: CN217909118U
Application number: CN202221887208.6U
Authority: CN
Inventors: 闫茹; 李素哲; 高明; 闫向伟; 刘俊英; 于蕊; 路彦茹; 张丽红
Original assignee: SHIJIAZHUANG YISHENGTANG MEDICAL SUPPLIES Ltd
Current assignee: SHIJIAZHUANG YISHENGTANG MEDICAL SUPPLIES Ltd
Priority date: 2022-07-22
Filing date: 2022-07-22
Publication date: 2022-11-29
Anticipated expiration: 2032-07-22

Abstract

The utility model belongs to the technical field of the blood separation, concretely relates to blood separator, include: the device comprises an upper chamber, a middle chamber, a lower chamber, a connecting part, an injection hole, an injection needle with an air filter plug, a sealing cap and a sampling port. The injection needle with the air filtering plug is convenient to use for injecting blood, and can prevent the external environment from polluting the blood; in the separation process, the liquid level in the cavity can be adjusted by extruding the upper cavity or the lower cavity, so that the target product reaches the highest purity, and the liquid level adjusting mode effectively solves the problem of liquid leakage; the upper chamber and the middle chamber and the lower chamber and the middle chamber can be communicated or isolated by controlling the rotating angle of the rotary piston, and the use is convenient and quick.

Description

Blood separator

Technical Field

The utility model belongs to the technical field of the blood separation, concretely relates to blood separator.

Background

Platelet-rich plasma (PRP) is a platelet concentrate extracted from whole blood by centrifugation, and contains high concentrations of platelets, leukocytes and fibrin; after being activated, the platelet can secrete a plurality of growth factors, the leucocyte can prevent infection, and the fibrin can locally construct a three-dimensional structure required by tissue repair. The concentrated PRP not only provides concentrated nutrition for the tissue repair, but also builds a better repair environment for the tissue repair, and can promote and accelerate the repair of bone tissues and soft tissues.

Various separators are available in the market for separating and extracting platelet-rich plasma, but most separators adopt a rotary pushing and lifting mode for liquid level adjustment, and although the mode can avoid blood pollution, the leakage risk exists.

Disclosure of Invention

An object of the utility model is to provide a blood separator not only can effectively avoid the weeping, still can prevent that the sample from receiving the pollution.

In order to achieve the above purpose, the utility model provides a technical scheme does:

a blood separator comprising:

the device comprises an upper chamber, a middle chamber, a lower chamber, a connecting part, an injection hole, an injection needle with an air filtering plug, a sealing cap and a sampling port; wherein the connecting portion includes a connecting chamber and a rotary piston.

Further, the blood separator of the present invention, wherein: the rotary piston is inserted into the connecting cavity and is fixed through a buckle, and the rotary piston can rotate in the connecting cavity.

Further, the blood separator of the present invention, wherein: the connecting cavity is provided with a first connecting through hole; the rotary piston is provided with a second communication hole;

when the first communication hole is aligned with the second communication hole, the upper chamber and the middle chamber, or the middle chamber and the lower chamber can be communicated;

when the first communication hole and the second communication hole form an angle of 90 degrees, the upper chamber and the middle chamber, or the middle chamber and the lower chamber, can be isolated.

Further, the blood separator of the present invention, wherein: and the tail part of the rotary piston and one end of the connecting cavity corresponding to the tail part of the rotary piston are provided with limiting structures which can limit the rotation angle of the rotary piston in the connecting cavity. Specifically, the tail of the rotary piston is provided with a limiting groove or a limiting bulge, one end of the connecting cavity corresponding to the tail of the rotary piston is provided with the limiting bulge or the limiting groove, and the limiting groove is matched with the limiting bulge. Preferably, when the rotary piston is at one end of the limiting structure, the first communicating hole is at 90 degrees or aligned with the second communicating hole, and when the rotary piston is rotated to the other end of the limiting structure, the first communicating hole is aligned with the second communicating hole or at 90 degrees.

Further, the blood separator of the present invention, wherein: the surface of the rotary piston is wrapped with a sealing layer; the sealing layer may be selected from elastomeric materials.

Further, the blood separator of the present invention, wherein: the side of the connecting cavity far away from the inlet end of the rotary piston is in a closed or partially closed form.

Further, the blood separator of the present invention, wherein: the injection needle with the air filtering plug comprises a blood inlet, the air filtering plug, an air needle hole and a blood needle hole.

Further, blood entry with sealed cap the filling opening all passes through threaded connection with sealed cap.

Further, the blood separator of the present invention, wherein: the top ends of the upper cavity and the lower cavity are made of soft materials; the soft material can be thermoplastic elastomer, silica gel and the like. The liquid level of the chamber can be adjusted by pressing the upper chamber and the lower chamber.

Further, the blood separator of the present invention, wherein: the top ends of the upper cavity and the lower cavity are of spherical structures.

Further, the blood separator of the present invention, wherein: the sampling port is arranged in the upper chamber and/or the lower chamber.

Preferably, the blood separator of the present invention, wherein: the sampling port can be designed into a concave structure, so that the identification of a sampling position is facilitated; the sampling port may be sealed with, but not limited to, dialysis paper to ensure sterility of the sampling port.

Further, the blood separator of the present invention, wherein: the injection hole is arranged in the middle chamber or the lower chamber.

Preferably, the blood separator of the present invention, wherein: and a sealing gasket is arranged on the inner ring of the screw cap.

Preferably, the blood separator of the present invention, wherein: the filling hole is provided with a sealing plug which can prevent outside air from entering the separator.

The utility model provides a blood separator accessible welded mode preparation forms.

The utility model provides a whole column that is of blood separator.

The blood separator provided by the utility model can adjust the liquid level through the deformation of the soft material, so that the target product reaches the highest purity, and the liquid level adjusting mode effectively solves the problem of liquid leakage; the upper chamber and the middle chamber, and the middle chamber and the lower chamber can be communicated and isolated by controlling the rotation angle of the rotary piston, so that the operation is convenient and quick, and the probability of misoperation is greatly reduced.

Compared with the prior art, the beneficial effects of the utility model are as follows:

(1) The utility model provides a blood separator is equipped with utensil filtration stopper and pours into the needle into, can make things convenient for the injection of blood, still can prevent simultaneously that external environment from causing the pollution to blood.

(2) The upper chamber and the lower chamber of the blood separator provided by the utility model are both designed by soft materials, and the liquid level in the chamber is adjusted by extruding the upper chamber or the lower chamber, so that the problem of liquid leakage can be effectively solved; the first communicating hole and the second communicating hole can be communicated and isolated by controlling the rotating angle of the rotary piston, and the use is convenient and quick.

(3) The utility model provides a blood separator is integral structure, only is equipped with an injection hole, and this haplopore design can further avoid the weeping risk.

Drawings

Fig. 1 is a schematic diagram of the overall structure of the blood separator of the present invention.

Fig. 2 is a schematic view of the blood separator connection cavity of the present invention.

Fig. 3 is a schematic structural view of the rotary piston of the blood separator of the present invention.

Fig. 4 is a schematic diagram of the limiting structure of the blood separator of the present invention.

Fig. 5 is a schematic view of the structure of the air filter plug injection needle of the blood separating device of the present invention.

Wherein: 10. an upper chamber; 20. a middle chamber; 30. a lower chamber; 40. a connecting portion; 41 connecting the cavities; 41-1 a first through-hole; 41-2 fixed card slots; 41-3 limiting grooves; 42. a rotary piston; 42-1 second communication hole; 42-2 annular protrusions; 42-3 limiting bulges; 50. an injection hole; 60. an injection needle with an air filter plug; 60-1 blood inlet; 60-2 air filter plugs; 60-3 air pinholes; 60-4 blood needle holes; 70. a sealing cap; 80. a sampling port.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary intended for explaining the present invention, and should not be construed as limiting the present invention.

The invention will be further described with reference to the drawings and specific examples.

As shown in fig. 1, the blood separator provided by the present invention comprises an upper chamber 10, a middle chamber 20, a lower chamber 30, a connecting portion 40, an injection hole 50, an injection needle with an air filter plug 60, a sealing cap 70, and a sampling port 80.

The upper chamber 10 and the lower chamber 30 are both connected with the middle chamber 20 through a connecting part 40, and the connecting part 40 comprises a connecting cavity 41 and a rotary piston 42; the rotary piston 42 is inserted into the connection chamber 41 and fixed by a snap fit, and the rotary piston 42 is rotatable in the connection chamber 41. In this embodiment, as shown in fig. 2 and 3, the head of the rotary piston is provided with an annular protrusion 42-2, one end of the connection cavity corresponding to the head of the rotary piston is provided with a fixed slot 41-2, and the annular protrusion 42-2 is matched with the fixed slot 41-2, so that the head of the rotary piston can be fixed in the slot and can rotate around the slot. In order to prevent liquid leakage, one end of the connecting cavity corresponding to the head part of the rotary piston can be in a closed or partially closed form; in this embodiment, the end of the connection cavity corresponding to the head of the rotary piston is sealed, but a small hole is left in the middle, so that the rotary piston 42 can be conveniently inserted.

The connecting cavity 41 of the utility model is provided with a first communicating hole 41-1, and the rotary piston is provided with a second communicating hole 42-1; when the first communication hole 41-1 is aligned with the second communication hole 42-1, the upper chamber 10 and the middle chamber 20, or the middle chamber 20 and the lower chamber 30 can be made to communicate; when the first communication hole 41-1 is at 90 ° to the second communication hole 42-1, the upper chamber 10 and the middle chamber 20, or the middle chamber 20 and the lower chamber 30, can be isolated.

Preferably, the tail part of the rotary piston and one end of the connecting cavity corresponding to the tail part of the rotary piston are provided with limiting structures which can limit the rotation angle of the rotary piston in the connecting cavity. The limiting structure specifically comprises: the tail part of the rotary piston is provided with a limiting groove or a limiting bulge, one end of the connecting cavity corresponding to the tail part of the rotary piston is provided with the limiting bulge or the limiting groove, and the limiting groove is matched with the limiting bulge. In this embodiment, as shown in fig. 4, the tail of the rotary piston is provided with a limiting protrusion 42-3, one end of the connecting cavity corresponding to the tail of the rotary piston is provided with an arc-shaped limiting groove 41-3, and the limiting protrusion 42-3 can move along the limiting groove 41-3. Preferably, the arc length of the restraint slot 41-3 is one-fourth of the perimeter of the open end. When the rotary piston 42 is at one end of the limit groove 41-3, the first communicating hole 41-1 and the second communicating hole 42-1 are at 90 degrees or are overlapped, and when the rotary piston moves to the other end of the limit groove 41-3, the first communicating hole 41-1 and the second communicating hole 42-1 are overlapped or are at 90 degrees. The design can accurately control the rotation angle on one hand, and can also avoid cross contamination of liquid in the upper chamber and the middle chamber or the lower chamber and the middle chamber on the other hand. In order to ensure that no liquid leakage occurs in the rotating process, the surface of the plug body of the rotating piston is wrapped with a sealing layer, and the sealing layer is preferably made of an elastomer material. For the convenience of rotation, the present embodiment designs the tail of the rotary piston as a rounded rectangle.

The injection hole 50 may be provided in the middle chamber 20 or the lower chamber 30. In the present embodiment, the injection hole 50 is provided on the cavity of the middle chamber 20 adjacent to the upper chamber 10. Preferably, the inlet is provided with a sealing plug to prevent outside air from entering the separator.

An air filter plug injection needle 60 can be inserted into the injection port 50 to inject blood into the separator, and the insertion end of the air filter plug injection needle can be mated with the injection port 50 to provide a seal. As shown in FIG. 5, the injection needle 60 with an air filter plug comprises a blood inlet 60-1, an air filter plug 60-2, an air needle hole 60-3, and a blood needle hole 60-4. When blood is injected into the separator, the blood enters the interior of the separator from the blood inlet 60-1 along the blood needle hole 60-4, and air inside the separator is discharged from the air filter plug 60-2 along the air needle hole 60-3. The air filter plug 60-2 can balance the air pressure inside the separator with the air pressure outside the separator, and filter out bacteria to ensure the sterility inside the separator.

A sealing cap 70 for sealing the injection hole 50 and the injection needle 60 with an air filter plug. Preferably, the blood inlet 60-1 with the air filter plug injection needle 60 is connected with the sealing cap 70, and the injection hole 50 is connected with the sealing cap 70 by screw threads. More preferably, a gasket is provided in the sealing cap 70.

The top ends of the upper chamber 10 and the lower chamber 30 are made of soft materials, such as thermoplastic elastomer, and the liquid level in the upper/lower chambers can be adjusted by means of extrusion. Preferably, the volume of the lower chamber 30 is greater than the volume of the upper chamber 10 to facilitate the need for blood separation.

The upper/lower chambers are connected to the connection portion 40 by, but not limited to, welding. The middle chamber 20 and the upper and lower connecting portions 40 are integrally welded by, but not limited to, a hot plate, ultrasonic waves, laser, or the like.

Taking the separation of platelet-rich plasma as an example, the utility model provides a blood separator use method as follows: before the whole blood is injected, the rotary piston is rotated to enable the middle chamber 20 to be communicated with the lower chamber 30; whole blood is injected into the middle chamber 20 through the injection needle 60 with an air filter plug, and then the injection needle 60 with an air filter plug is pulled out, and the sealing cap 70 is screwed to the injection hole 50 to perform a first centrifugation. After centrifugation, the internal liquid was divided into two layers, the upper layer being a mixture of serum and platelets and the lower layer being predominantly red blood cells. The lower chamber 30 is squeezed, the liquid level of the lower chamber is adjusted, so that red blood cells are mainly concentrated in the lower chamber 30, and the mixture of serum and platelets is mainly concentrated in the middle chamber; the rotary piston 42 is rotated to completely close the first communication hole 41-1.

The blood separator is rotated 180 deg. so that the upper chamber 10 faces downward. After the liquid in the middle chamber 20 is uniformly shaken, carrying out second centrifugation, wherein after the centrifugation, the upper layer is serum, and the lower layer is platelet-rich plasma; the upper chamber 10 is pressed, the liquid level of the upper chamber is adjusted, so that platelet-rich plasma is mainly concentrated in the upper chamber 10, and serum is mainly concentrated in the middle chamber 20; platelet rich plasma can be extracted through the sampling port 80 provided in the upper chamber. The sample port 80 may be sealed with, but not limited to, dialysis paper to ensure sterility of the sample port; in the present embodiment, the sampling port 80 is designed as a concave structure to facilitate the identification of the sampling position.

The utility model provides a blood separator can obtain target isolate or concentrate through once or twice centrifugal separation.

The utility model provides a separator not only can separate and collect blood component, can also be used for the separation of the multicomponent mixture among other fields to draw, only need this mixture can through can the layering after the centrifugation can.

Finally, it should be noted that: the above-mentioned embodiments are only used for illustrating the technical solution of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art; the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention.

Claims

1. A blood separator, comprising:

the device comprises an upper chamber (10), a middle chamber (20), a lower chamber (30), a connecting part (40), an injection hole (50), an injection needle (60) with an air filtering plug, a sealing cap (70) and a sampling port (80); wherein: the connecting portion (40) includes a connecting chamber (41) and a rotary piston (42).

2. The blood separator of claim 1, wherein: the rotary piston (42) is inserted into the connecting cavity (41) and is fixed by a snap, and the rotary piston (42) can rotate in the connecting cavity (41).

3. The blood separator according to claim 1, characterized in that said connection chamber (41) is provided with a first communication hole (41-1); the rotary piston (42) is provided with a second communication hole (42-1);

when the first communicating hole (41-1) is aligned with the second communicating hole (42-1), the upper chamber (10) and the middle chamber (20), or the middle chamber (20) and the lower chamber (30) can be communicated;

when the first communication hole (41-1) and the second communication hole (42-1) are at 90 degrees, the upper chamber (10) and the middle chamber (20), or the middle chamber (20) and the lower chamber (30) can be isolated.

4. The blood separator according to claim 1, wherein the tail portion of the rotary piston and one end of the connecting cavity (41) corresponding to the tail portion of the rotary piston are provided with limit structures which can limit the rotation angle of the rotary piston in the connecting cavity.

5. The blood separator according to claim 4, wherein the stop structure is in particular: the tail part of the rotary piston (42) is provided with a limiting groove or a limiting bulge, one end of the connecting cavity (41) corresponding to the tail part of the rotary piston is provided with the limiting bulge or the limiting groove, and the limiting groove is matched with the limiting bulge.

6. The blood separator of claim 1, wherein the plug body of the rotary piston is surface coated with a sealing layer.

7. The blood separator according to claim 1, wherein said air filter plug injection needle (60) comprises a blood inlet (60-1), an air filter plug (60-2), an air needle hole (60-3), and a blood needle hole (60-4).

8. The blood separator according to claim 1, wherein the top ends of said upper chamber (10) and lower chamber (30) are of a soft material.

9. The blood separator according to claim 1, wherein the top ends of said upper (10) and lower (30) chambers are of spherical configuration.

10. The blood separator according to claim 1, wherein the injection hole (50) is provided in a middle chamber or a lower chamber.