A platelet-rich plasma preparation device

Abstract

The utility model relates to a kind of platelet-rich plasma preparation devices. Including front end center with outer tube center tube, rear end open outer sleeve, for closing outer tube center tube, detachable end cap is installed in the front end of outer sleeve, piston sleeve is equipped in the inside of outer sleeve and outer tube rubber plug is installed in the front of piston sleeve, central hole is equipped in the center of outer tube rubber plug, rear end open inner sleeve is installed in the inside of piston sleeve, inner tube center tube is equipped in the front end of inner sleeve, detachable connecting structure is between the front end of inner sleeve and the front end of piston sleeve, piston is equipped in the inside of inner sleeve, and inner tube rubber plug is installed in the front end of piston. The utility model provides a kind of platelet-rich plasma preparation device, and the convenience of platelet-rich plasma preparation operation is improved.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, and in particular relates to a platelet-rich plasma preparation device. Background Technology

[0002] Platelet-rich plasma (PRP) is plasma rich in platelets, obtained by centrifuging whole blood from animals or humans. The addition of thrombin transforms it into a gel-like substance, hence it is also known as platelet-rich gel or platelet-rich leukocyte gel. PRP contains a large number of growth factors such as platelet-derived growth factor (PDGF), transforming growth factor β (TGF-β), and insulin-like growth factor 1 (IGF-1). It promotes tissue repair and regeneration and is used in fields such as orthopedics, sports medicine, and dermatology, representing a personalized medical approach. During centrifugation, the blood separates into three layers: a plasma layer, a platelet-rich white blood cell layer, and a red blood cell layer.

[0003] Existing platelet-rich plasma (PRP) generators are not convenient for separating PRP after centrifugation, necessitating the development and design of novel PRP generators. Utility Model Content

[0004] The purpose of this invention is to provide a platelet-rich plasma (PRP) preparation device to improve the convenience of PRP preparation operations.

[0005] The technical solution adopted by this utility model is as follows: a platelet-rich plasma preparation device, including an outer tube with an outer central tube at the front end and an open rear end, a detachable end cap for sealing the outer central tube is installed at the front end of the outer tube, a piston sleeve is provided inside the outer tube and an outer tube rubber plug is installed at the front of the piston sleeve, a central hole is provided at the center of the outer tube rubber plug, an inner tube with an open rear end is installed inside the piston sleeve, an inner central tube is provided at the front end of the inner tube, a detachable connection structure is provided between the front end of the inner tube and the front end of the piston sleeve, a piston is provided inside the inner tube and an inner tube rubber plug is installed at the front end of the piston.

[0006] Preferably, the outer tube has an internally threaded front connecting tube at the front end of the outer tube and the outer tube center tube is located inside the front connecting tube. The end cap includes an end plate and a connecting sleeve and a closing sleeve located on the same side of the end plate. The connecting sleeve has an external thread and is located inside the closing sleeve. The connecting sleeve and the front connecting tube are threaded together.

[0007] Preferably, a piston connecting pipe with a central hole is provided at the front end of the piston sleeve, and an external thread is provided on the rear outer wall of the piston connecting pipe. An inner tube front connecting pipe with an internal thread is provided at the front end of the inner sleeve, and the inner tube center pipe is located inside the inner tube front connecting pipe. The rear part of the piston connecting pipe is threadedly connected to the inner tube front connecting pipe.

[0008] Preferably, a groove is provided on the front outer wall of the piston connecting pipe and the front outer wall of the piston sleeve, and the outer tube rubber plug is installed through the groove; a protrusion is provided at the front end of the piston and a groove is provided between the protrusion and the front end of the piston, and the inner tube rubber plug is installed through the groove and the protrusion is located inside the inner tube rubber plug.

[0009] Preferably, an outer tube finger plate is provided at the rear end of the outer sleeve, an inner tube finger plate is provided at the rear end of the inner sleeve, an outer finger plate anti-slip pattern is provided on the front surface of the outer tube finger plate, an inner finger plate anti-slip pattern is provided on the front surface of the inner tube finger plate, and a piston end anti-slip pattern is provided on the rear end face of the piston.

[0010] Preferably, the piston sleeve includes a sleeve body, on the outer wall of the sleeve body are provided a plurality of circumferentially spaced strips that extend in the axial direction, and the sleeve body is also provided with perforations on the tube wall.

[0011] The advantages and positive effects of this utility model are:

[0012] This invention provides a platelet-rich plasma (PRP) preparation device. The piston sleeve, inner sleeve, outer tube stopper, and outer sleeve, in their combined state, constitute the external syringe structure. The inner sleeve, piston, and inner tube stopper constitute the internal syringe structure. During PRP preparation, anticoagulant and whole blood are drawn into the external syringe structure, then centrifuged to separate the blood into layers. The internal syringe structure is then used to extract the PRP. After extraction, the internal syringe structure can be separated from the external syringe structure, and the final PRP is extracted from the separated internal syringe structure. Therefore, this PRP preparation device improves the convenience of PRP preparation and reduces the operational burden. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the external structure of this utility model;

[0014] Figure 2 This is a cross-sectional structural schematic diagram of the present invention;

[0015] Figure 3 yes Figure 2 A three-dimensional structural diagram of the inner and outer jacket and its accessories, from a frontal view;

[0016] Figure 4 yes Figure 2 A three-dimensional structural diagram of the piston sleeve and its auxiliary components, viewed from the rear.

[0017] Figure 5 yes Figure 2 A three-dimensional structural diagram of the inner sleeve and its accessories, viewed from the front.

[0018] In the picture:

[0019] 1. Piston end anti-slip texture; 2. Piston; 3. Pad; 4. Inner tube finger plate; 5. Outer tube finger plate; 6. Piston sleeve; 6-1. Sleeve body; 6-2. Edge strip; 6-3. Hollowed-out; 7. Outer tube; 8. End cap; 9. Inner tube; 10. Outer tube rubber plug; 11. Piston connecting tube; 12. Outer tube center tube; 13. Inner tube rubber plug; 14. Inner tube front connecting tube; 15. Inner tube center tube; 16. Outer tube front connecting tube; 17. Outer finger plate anti-slip texture; 18. Inner finger plate anti-slip texture. Detailed Implementation

[0020] To further understand the invention content, features and effects of this utility model, the following embodiments are provided in detail.

[0021] Please see Figure 1 and Figure 2 The platelet-rich plasma preparation device of this utility model includes an outer tube 7 with an outer central tube 12 at the front end and an open rear end. A detachable end cap 8 for sealing the outer central tube 12 is installed at the front end of the outer tube 7. A piston sleeve 6 is provided inside the outer tube 7, and an outer tube rubber plug 10 is installed at the front of the piston sleeve 6. A central hole is provided at the center of the outer tube rubber plug 10. An inner tube 9 with an open rear end is installed inside the piston sleeve 6. An inner central tube 15 is provided at the front end of the inner tube 9. There is a detachable connection structure between the front end of the inner tube 9 and the front end of the piston sleeve 6. A piston 2 is provided inside the inner tube 9, and an inner tube rubber plug 13 is installed at the front end of the piston 2.

[0022] Therefore, this platelet-rich plasma (PRP) preparation device has two syringe structures: an external syringe structure and an internal syringe structure. The external syringe structure includes the aforementioned outer tube 7 and its accessories, a piston sleeve 6 and its outer tube rubber stopper 10. The piston sleeve 6 and its outer tube rubber stopper 10 constitute the piston assembly of the external syringe structure. When the end cap 8 is removed and the piston assembly is moved backward, the anticoagulant and whole blood are drawn into the interior of the external syringe structure, i.e., into the interior of the outer tube 7. The internal syringe structure includes the aforementioned inner tube 9 and its accessories, a piston 2 and its inner tube rubber stopper 13. The piston 2 and its inner tube rubber stopper 13 constitute the piston assembly of the internal syringe structure. When the piston assembly is moved backward, platelet-rich plasma is drawn into the interior of the internal syringe structure, i.e., into the interior of the inner tube 9. For ease of measurement, graduations are provided on the outer wall of the outer tube 7 and the outer wall of the inner tube 9.

[0023] The preparation principle is as follows: anticoagulant and whole blood are drawn into the external syringe structure, and after the end cap 8 is installed, the blood is centrifuged to separate the blood into layers. Then, the internal syringe structure is operated to extract platelet-rich plasma. After that, the connection between the internal syringe structure and the piston sleeve 6 is released, and the final platelet-rich plasma is extracted by the internal syringe structure.

[0024] Please see Figure 2 and Figure 3 It can be seen that:

[0025] The outer tube 7 has an internally threaded front connecting tube 16 at its front end, with the outer tube center tube 12 located inside the front connecting tube 16. The end cap 8 includes an end plate and a connecting sleeve and a closing sleeve located on the same side of the end plate. The connecting sleeve has an external thread and is located inside the closing sleeve. The connecting sleeve is threadedly connected to the front connecting tube 16. When installing the end cap 8, the connecting sleeve of the end cap 8 is threadedly connected to the front connecting tube 16. At this time, the outer tube center tube 12 is inserted into the inside of the connecting sleeve, and the front connecting tube 16 is located between the connecting sleeve and the closing sleeve, achieving a good sealing effect. When the end cap 8 needs to be removed, it can be rotated off. When the end cap 8 is removed, the front end of the outer tube center tube 12 protrudes from the front of the front connecting tube 16, which facilitates the extraction of inhaled anticoagulants and whole blood.

[0026] Please see Figure 2 and Figure 4 It can be seen that:

[0027] The piston sleeve 6 includes a sleeve body 6-1 with an open rear end. Multiple circumferentially spaced, axially extending side strips 6-2 are provided on the outer wall of the sleeve body 6-1. Holes 6-3 are also provided on the wall of the sleeve body 6-1. As shown in the figure, there are four side strips 6-2, with adjacent side strips 6-2 spaced 90° apart circumferentially. The holes 6-3 are located between adjacent side strips 6-2.

[0028] Please see Figure 2 and Figure 5 It can be seen that:

[0029] A piston connecting tube 11 with a central hole is provided at the front end of the piston sleeve 6. Specifically, the piston connecting tube 11 is located at the front center of the sleeve body 6-1 and is integrally injection molded with the piston sleeve 6. An external thread is provided on the rear outer wall of the piston connecting tube 11. An inner tube front connecting tube 14 with an internal thread is provided at the front end of the inner sleeve 9, and the inner tube center tube 15 is located inside the inner tube front connecting tube 14. The rear part of the piston connecting tube 11 is threadedly connected to the inner tube front connecting tube 14. When preparing platelet-rich plasma, the internal syringe structure is in a combined state with the piston sleeve 6. At this time, the piston connecting tube 11 and the inner tube front connecting tube 14 are threadedly connected, and the inner tube center tube 15 is located in the central hole of the piston connecting tube 11. After centrifugation, the internal syringe structure is used to extract the stratified platelet-rich plasma. Then, the connection between the piston connecting tube 11 and the inner tube front connecting tube 14 is released, and the internal syringe structure can be removed from the piston sleeve 6.

[0030] In this embodiment, grooves are provided on the front outer wall of the piston connecting pipe 11 and the front outer wall of the piston sleeve 6 (specifically, on the front outer wall of the sleeve body 6-1), and the outer tube rubber plug 10 is installed through the grooves. In this embodiment, a protrusion is provided at the front end of the piston 2, and a groove is provided between the protrusion and the front end of the piston 2. The inner tube rubber plug 13 is installed through the groove, and the protrusion is located inside the inner tube rubber plug 13.

[0031] In this embodiment, an outer tube finger plate 5 is provided at the rear end of the outer sleeve 7, and an inner tube finger plate 4 is provided at the rear end of the inner sleeve 9. An outer finger plate anti-slip texture 17 is provided on the front surface of the outer tube finger plate 5, and an inner finger plate anti-slip texture 18 is provided on the front surface of the inner tube finger plate 4. A piston end anti-slip texture 1 is provided on the rear end face of the piston 2. During operation, the thumb contacts the rear end of the piston 2, where the piston end anti-slip texture 1 provides an anti-slip effect. The index and middle fingers then contact the outer tube finger plate 5 and the inner tube finger plate 4 successively, where the outer finger plate anti-slip texture 17 and the inner finger plate anti-slip texture 18 provide an anti-slip effect.

[0032] In this embodiment, a pad 3 is installed on the rear vertical surface of the inner tube finger plate 4. The pad 3 is made of polypropylene material, which has good rigidity and dimensional stability, effectively enhancing the structural strength of this part and improving the stress stability during use. As shown in the figure, the pad 3 is installed by a snap-fit ​​method. Specifically, the pad 3 has claws at both ends, and the inner tube finger plate 4 has locking holes at both ends, with the claws engaging in the locking holes.

[0033] Preparation steps of platelet-rich plasma:

[0034] Remove the end cap 8, operate the external syringe structure to draw anticoagulant and whole blood into the outer tube 7, and then reinstall the end cap 8; load the preparation device into the centrifuge with the end cap 8 facing down for centrifugation to separate the blood into layers; after centrifugation, unload the preparation device from the centrifuge and keep it in a vertical position throughout, i.e., with the end cap 8 facing down; operate the piston 2 of the internal syringe structure to draw the separated platelet-rich plasma into the inner tube 9, and then rotate the inner tube 9 to disconnect the inner tube front connecting tube 14 at its front end from the piston connecting tube 11 at the front end of the piston sleeve 6, so that the internal syringe structure and the prepared platelet-rich plasma can be drawn out from the piston sleeve 6.

Claims

1. A platelet-rich plasma (PRP) preparation device, characterized in that: It includes an outer tube (7) with an outer tube center tube (12) at the front end and an open outer tube (7) at the rear end. A detachable end cap (8) for sealing the outer tube center tube (12) is installed at the front end of the outer tube (7). A piston sleeve (6) is provided inside the outer tube (7) and an outer tube rubber plug (10) is installed at the front of the piston sleeve (6). A center hole is provided at the center of the outer tube rubber plug (10). An inner tube (9) with an open rear end is installed inside the piston sleeve (6). An inner tube center tube (15) is provided at the front end of the inner tube (9). There is a detachable connection structure between the front end of the inner tube (9) and the front end of the piston sleeve (6). A piston (2) is provided inside the inner tube (9), and an inner tube rubber plug (13) is installed at the front end of the piston (2).

2. The platelet-rich plasma preparation device as described in claim 1, characterized in that: The outer tube (7) has an inner threaded front connecting tube (16) at the front end and the outer tube center tube (12) is located inside the front connecting tube (16). The end cap (8) includes an end plate and a connecting sleeve and a closing sleeve located on the same side as the end plate. The connecting sleeve has an external thread and is located inside the closing sleeve. The connecting sleeve is threaded to the front connecting tube (16).

3. The platelet-rich plasma preparation device as described in claim 2, characterized in that: in The piston sleeve (6) has a piston connecting pipe (11) with a central hole at the front end. The piston connecting pipe (11) has an external thread on the rear outer wall. The inner sleeve (9) has an inner tube front connecting pipe (14) with an internal thread at the front end. The inner tube center pipe (15) is located inside the inner tube front connecting pipe (14). The rear part of the piston connecting pipe (11) is threadedly connected to the inner tube front connecting pipe (14).

4. The platelet-rich plasma preparation device as described in claim 3, characterized in that: in The piston connecting pipe (11) and the piston sleeve (6) are provided with grooves on the front outer wall and the piston sleeve (6), and the outer tube plug (10) is installed through the grooves; the piston (2) has a protrusion at the front end and a groove between the protrusion and the front end of the piston (2), and the inner tube plug (13) is installed through the groove and the protrusion is located inside the inner tube plug (13).

5. The platelet-rich plasma preparation device as described in claim 4, characterized in that: An outer tube finger plate (5) is provided at the rear end of the outer tube (7), an inner tube finger plate (4) is provided at the rear end of the inner tube (9), an outer finger plate anti-slip pattern (17) is provided on the front surface of the outer tube finger plate (5), an inner finger plate anti-slip pattern (18) is provided on the front surface of the inner tube finger plate (4), and a piston end anti-slip pattern (1) is provided on the rear end face of the piston (2).

6. The platelet-rich plasma preparation device as described in claim 5, characterized in that: The piston sleeve (6) includes a sleeve body (6-1), and multiple circumferentially spaced and axially extending side strips (6-2) are provided on the outer wall of the sleeve body (6-1). Holes (6-3) are also provided on the tube wall of the sleeve body (6-1).

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