Platelet-rich plasma preparation device with double-layer structure

Abstract

The utility model provides a platelet-rich plasma preparation device with a double-layer structure. The platelet-rich plasma preparation device comprises a centrifugal sleeve and a blood collection tube, the head end of the blood collecting tube is connected with a vein puncture needle assembly, and a protruding structure protruding out of the surface of the blood collecting tube is arranged on the outer wall of the blood collecting tube. Any end of the centrifugal sleeve is open and serves as an inlet of the blood collection tube; a protruding structure guide groove is formed in the centrifugal sleeve in the axial direction of the centrifugal sleeve, the protruding structure is of a sleeve structure, and the end, close to an inlet of the blood collecting pipe, of the sleeve structure is open. A needle head of the vein puncture needle assembly can be inserted into and contained in the protruding structure from the end, close to the inlet of the blood collecting pipe, of the protruding structure. The centrifugal injector is simple in structure, the stability of the injector during centrifugation can be improved, and the centrifugal effect can be improved; and meanwhile, the needle head is properly stored in the needle head storage bin during centrifugation, so that the risk of bacterial contamination is reduced.

Description

Technical Field

[0001] The utility model relates to the field of medical equipment, in particular to a platelet-rich plasma preparation device with a double-layer structure. Background Art

[0002] Platelet-rich plasma (PRP) is a high-concentration platelet-rich plasma obtained by centrifuging whole blood. The platelet-rich concentration of PRP is 3 to 8 times that of ordinary plasma. In addition, PRP is rich in a variety of growth factors and other biologically active substances. These growth factors and active substances are the key to cell growth and play an important role in cell proliferation, migration and differentiation. In recent years, PRP has achieved good results in promoting tissue regeneration and repair in bone defects, skin wound treatment, plastic surgery, sports injury treatment, etc.

[0003] The Chinese patent with the authorization announcement number CN217852988U discloses a blood sampling device, which includes a syringe disposed in a centrifugal sleeve, and a needle is installed at the top of the syringe; after blood is collected by the syringe, the entire syringe is loaded into the centrifugal sleeve for centrifugation. However, the syringe of the blood sampling device is randomly loaded into the centrifugal sleeve, and there is a gap of varying sizes between the syringe and the centrifugal sleeve, which causes the syringe to shake easily during the centrifugation process, affecting the centrifugal effect. Utility Model Content

[0004] The utility model aims to provide a platelet-rich plasma preparation device with a double-layer structure. The device has a simple structure and can improve the stability of the syringe during centrifugation.

[0005] The technical solution for achieving the purpose of the utility model is: a double-layer platelet-rich plasma preparation device, comprising a centrifugal sleeve and a blood collecting tube coaxially movably inserted in the centrifugal sleeve; the head end of the blood collecting tube is connected to a venous puncture needle assembly, and the outer wall of the blood collecting tube is provided with a protruding structure protruding from its surface; either end of the centrifugal sleeve is open and serves as the entrance of the blood collecting tube; a protruding structure guide groove is provided on the centrifugal sleeve along its axial direction, the protruding structure is a sleeve structure, and the end of the sleeve structure close to the entrance of the blood collecting tube is open; the needle of the venous puncture needle assembly can be inserted from the end of the protruding structure close to the entrance of the blood collecting tube and accommodated in the protruding structure.

[0006] The utility model limits and guides the blood collection tube through the guide groove of the raised structure, thereby preventing the blood collection tube from rotating relative to the centrifugal sleeve, improving the stability of the blood collection tube during centrifugation, and facilitating improving the centrifugal effect; at the same time, since the blood collection tube is movably inserted in the centrifugal sleeve, the blood collection tube can be removed from the centrifugal sleeve for blood collection, and after the blood collection is completed, the blood collection tube is inserted into the centrifugal sleeve for centrifugation to achieve the stratification of platelet-rich plasma (abbreviated as: PRP), thereby achieving the integrated assembly of the blood collection tube and the centrifugal sleeve. In addition, the needle of the platelet-rich plasma preparation device of the utility model can be properly stored in the raised structure during centrifugation, reducing the risk of bacterial contamination.

[0007] Furthermore, one end of the centrifugal sleeve facing away from the inlet of the blood collecting tube is open, and a first cap is provided at the open end, and the head end of the blood collecting tube is arranged toward the first cap.

[0008] Furthermore, a second cap is provided at one end of the centrifuge sleeve near the inlet of the blood collection tube to limit the position of the blood collection tube and encapsulate it in a centrifuge kit assembled by the first cap, the second cap and the centrifuge sleeve.

[0009] In a specific implementation process, the second cap is preferably connected to the centrifugal sleeve by threaded fitting; meanwhile, the first cap is also preferably connected to the centrifugal sleeve by threaded fitting.

[0010] Furthermore, the protrusion structure is arranged along the axial direction of the centrifugal casing. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is an axial cross-sectional structural diagram of a double-layer platelet-rich plasma preparation device of the utility model;

[0012] Figure 2 It is a three-dimensional structural diagram of a double-layer platelet-rich plasma preparation device of the utility model;

[0013] Figure 3 It is a three-dimensional structural diagram of the blood collection tube of the utility model, wherein the needle storage compartment is a perspective structure. DETAILED DESCRIPTION

[0014] The specific implementation of the platelet plasma preparation device with a double-layer structure of the utility model is described in detail below with reference to the accompanying drawings:

[0015] Combination Figure 1 to Figure 3, a double-layer platelet-rich plasma preparation device, comprising a centrifugal sleeve 10 and a blood collecting tube 20 coaxially movably inserted in the centrifugal sleeve 10; the head end of the blood collecting tube 20 is connected to a venous puncture needle assembly 30, and the outer wall of the blood collecting tube 20 is provided with a protruding structure 40 protruding from its surface; either end of the centrifugal sleeve 10 is open and serves as a blood collecting tube inlet 11; a protruding structure guide groove 12 is opened on the centrifugal sleeve 20 along its axial direction, and the protruding structure 40 is a sleeve structure, and the end of the sleeve structure close to the blood collecting tube inlet 11 is open; the needle 31 of the venous puncture needle assembly 30 can be inserted from the end of the protruding structure 40 close to the blood collecting tube inlet 11 and accommodated in the protruding structure 40.

[0016] The utility model limits the blood collection tube 20 by the limiting and guiding effect of the guide groove 12 of the convex structure on the needle storage bin 40, thereby preventing the blood collection tube 20 from rotating relative to the centrifugal sleeve 10, improving the stability of the blood collection tube 20 during centrifugation, and improving the centrifugal effect; at the same time, since the blood collection tube 20 is movably inserted in the centrifugal sleeve 10, the blood collection tube 20 can be removed from the centrifugal sleeve 10 for blood collection, and after the blood collection is completed, the blood collection tube 20 is inserted into the centrifugal sleeve 10 for centrifugation to achieve the stratification of platelet-rich plasma (abbreviated as: PRP), thereby achieving the integrated assembly of the blood collection tube 20 and the centrifugal sleeve 10. At the same time, the platelet-rich plasma preparation device of the utility model can properly store the needle 31 of the venous puncture needle assembly 30 in the convex structure 40 during centrifugation, thereby reducing the risk of bacterial contamination.

[0017] Of course, the protruding structure 40 may be open at only one end, or may be open at both ends.

[0018] Further, such as Figure 1 and Figure 3 As shown, the blood collection tube 20 is a syringe. Figure 1 As shown, the syringe 20 includes a syringe 21, a piston 22 and a core rod 23, and the piston 22 and the core rod 23 are detachably connected through a threaded matching structure. After the blood collection is completed, the core rod 23 can be removed from the piston 22 for centrifugation to achieve the stratification of platelet-rich plasma (PRP for short); and after the centrifugation is completed and the syringe is taken out, the core rod 23 can be reinstalled on the piston 22, pushing the core rod 23 and driving the piston 22, so that the stratified materials in the syringe 21 are pushed out layer by layer. The structural design is reasonable and easy to operate.

[0019] Further, such as Figure 1As shown, the end of the centrifugal sleeve 10 away from the blood collection tube inlet 11 is open, and the open end is matched with a first cap 50, and the head end of the blood collection tube 20 is arranged toward the first cap 50. Of course, the end of the centrifugal sleeve 10 away from the blood collection tube 20 inlet can also be closed, in which case, there is no need to additionally set a first cap.

[0020] Combination Figure 1 As shown, the end of the centrifugal sleeve 10 near the blood collection tube inlet 11 is matched with a second cap 60, and at this time, the blood collection tube 20 is limited and encapsulated in the centrifugal set assembled by the first cap 50, the second cap 60 and the centrifugal sleeve 10. Of course, the double-layer platelet plasma preparation device of the utility model can also be provided without the first cap 50 and the second cap 60.

[0021] In the specific implementation process, the second cap 60 and the centrifugal sleeve 10 can be connected by tight fit, snap fit, thread fit, etc., preferably thread fit (such as Figure 1 At the same time, the first cap 50 and the centrifugal sleeve 10 can be connected by tight fit, snap fit, threaded fit, etc., preferably threaded fit (such as Figure 1 as shown).

[0022] Further, such as Figure 3 As shown, the protrusion structure 40 is arranged along the axial direction of the centrifugal sleeve 10, which is simple to manufacture and easy to assemble. Of course, the protrusion structure 40 can also be arranged at a certain angle to the centrifugal sleeve 10.

[0023] For ordinary technicians in the technical field to which the utility model belongs, the utility model can make several simple deductions or substitutions without departing from the concept of the utility model, which should be regarded as falling within the protection scope of the utility model.

Claims

1. A double-layer platelet-rich plasma preparation device, comprising a centrifugal sleeve and a blood collection tube coaxially inserted into the centrifugal sleeve; characterized in that: The head end of the blood collection tube is connected to a venous puncture needle assembly, and a protruding structure protruding from the surface of the blood collection tube is provided on the outer wall of the blood collection tube; either end of the centrifugal sleeve is open and serves as the entrance of the blood collection tube; a protruding structure guide groove is provided on the centrifugal sleeve along its axial direction, and the protruding structure is a sleeve structure, and one end of the sleeve structure close to the entrance of the blood collection tube is open; the needle of the venous puncture needle assembly can be inserted from the end of the protruding structure close to the entrance of the blood collection tube and accommodated in the protruding structure.

2. The double-layer platelet-rich plasma preparation device according to claim 1, characterized in that: The end of the centrifugal sleeve facing away from the inlet of the blood collection tube is open, and the open end is matched with a first cover cap, and the head end of the blood collection tube is arranged toward the first cover cap.

3. The double-layer platelet-rich plasma preparation device according to claim 2, characterized in that: The end of the centrifugal sleeve close to the inlet of the blood collection tube is matched with a second cap to limit the blood collection tube and encapsulate it in a centrifugal kit assembled by the first cap, the second cap and the centrifugal sleeve.

4. The double-layer platelet-rich plasma preparation device according to claim 2, characterized in that: The first cover cap is threadably connected to the centrifugal sleeve.

5. The double-layer platelet-rich plasma preparation device according to claim 3, characterized in that: The second cover cap is threadably connected to the centrifugal sleeve.

6. The double-layer platelet-rich plasma preparation device according to claim 1, characterized in that: The protrusion structure is arranged along the axial direction of the centrifugal sleeve.

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