CN215313158U - Platelet-rich plasma preparation device - Google Patents

Abstract

The utility model discloses a platelet-rich plasma preparation device which comprises a first injection tube, a first piston, a second injection tube, a second piston, a push rod and a sealing cover, wherein the second piston is arranged in the second injection tube, the periphery of the piston is hermetically connected with the inner wall of the second injection tube, one end of the push rod is connected with the second piston, the first piston is arranged in the first injection tube, the periphery of the first piston is hermetically connected with the inner wall of the first injection tube, the front end of the second injection tube is detachably connected with the first piston, an injection head of the second injection tube penetrates through the first piston to communicate a cavity of the second injection tube with a cavity of the first injection tube, and the sealing cover is detachably and hermetically connected with the injection head of the first injection tube. Simple structure, and improved purity and quality of platelet plasma.

Description

Platelet-rich plasma preparation device

The technical field is as follows:

the utility model belongs to the technical field of preparation of medical instruments, and particularly relates to a platelet-rich plasma preparation device.

Background art:

platelet-rich plasma (PRP) is high-concentration Platelet-rich plasma obtained by gradient centrifugation of fresh whole blood according to the difference of sedimentation rate of blood components during centrifugation, and contains a large amount of bioactive substances, and has the effects of rapidly stopping bleeding, relieving pain and accelerating wound healing.

In recent years, with the increasing popularity of PRP technology, equipment and equipment for preparing platelet rich plasma have been introduced. However, most of the Platelet Rich Plasma (PRP) preparation devices known in the market at present have the defects of complex structure, high price, complicated operation (collection, separation, extraction, injection and the like), long time consumption, low platelet concentration in the prepared platelet rich plasma, unstable plasma quality, easy pollution and the like, so that the preparation devices are greatly limited in clinical application and popularization.

The utility model has the following contents:

the utility model aims to overcome the defects in the prior art, and seeks to design a platelet-rich plasma preparation device, which solves the problems of low platelet concentration, unstable plasma quality, easy pollution and the like in the existing platelet-rich plasma.

In order to achieve the purpose, the utility model relates to a platelet-rich plasma preparation device, which comprises a first injection tube, a first piston, a second injection tube, a second piston, a push rod and a sealing cover, wherein the second piston is arranged in the second injection tube, the periphery of the piston is hermetically connected with the inner wall of the second injection tube, one end of the push rod is connected with the second piston, the first piston is arranged in the first injection tube, the periphery of the first piston is hermetically connected with the inner wall of the first injection tube, the front end of the second injection tube is detachably connected with the first piston, an injection head of the second injection tube penetrates through the first piston to communicate a cavity of the second injection tube with the cavity of the first injection tube, and the sealing cover is detachably and hermetically connected with the injection head of the first injection tube.

The utility model relates to a platelet-rich plasma preparation device, which comprises a first injection tube, a first piston, a second injection tube, a second piston, a push rod, a sealing cover, a third injection tube and a third piston, wherein the second piston is arranged in the second injection tube, the periphery of the piston is hermetically connected with the inner wall of the second injection tube, one end of the push rod is connected with the second piston, the first piston is arranged in the first injection tube, the periphery of the first piston is hermetically connected with the inner wall of the first injection tube, the front end of the second injection tube is detachably connected with the first piston, an injection head of the second injection tube penetrates through the first piston, a cavity of the second injection tube is communicated with a cavity of the first injection tube, the third piston is arranged in the third injection tube, the periphery of the third piston is hermetically connected with the inner wall of the third injection tube, the front end of the first injection tube is detachably connected with the third piston, and the injection head of the first injection tube penetrates through the third piston and is communicated with the third injection tube, the sealing cover can be detachably and hermetically connected with the first injection tube injection head, the second injection tube injection head and the third injection tube injection head.

The first injection tube, the second injection tube and/or the third injection tube comprise injection heads, inverted conical parts and cylinders which are sequentially communicated end to end.

First piston and/or third piston all include fixed head and rubber ring, the fixed head includes the conical head, the solid fixed ring of piston, fixing base and holding chamber, the conical head, the solid fixed ring of piston, the end to end connection of fixing base forms the integral type structure, set up at the fixed head middle part with second injection tube or first injection tube injection head, the holding chamber of circular truncated cone portion and barrel front end complex, the rubber ring cup joints in the solid fixed ring outside of piston, first injection tube or third injection tube inner wall is hugged closely with rubber ring parallel and level all around to the fixing base, second injection tube or first injection tube barrel front end and holding chamber bottom threaded connection.

Compared with the prior art, the utility model has the following beneficial effects: simple structure, and improved purity and quality of platelet plasma.

Description of the drawings:

fig. 1 is a schematic view of the structure of a platelet rich plasma production apparatus according to example 1.

Fig. 2 is a sectional view a-a in fig. 1.

Fig. 3 is a schematic view of a fixture structure according to embodiment 1.

Fig. 4 is a schematic structural view of a platelet rich plasma production apparatus according to example 2.

Fig. 5 is a sectional view B-B of fig. 4.

The specific implementation mode is as follows:

the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.

References to "first," "second," etc. are intended to distinguish between similar items and not necessarily to describe a particular order or sequence. It will be appreciated that the data so used may be interchanged where appropriate. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.

Example 1:

as shown in fig. 1 and 2, the platelet rich plasma preparing apparatus according to this embodiment includes a first syringe 1, a first piston 2, a second syringe 3, a second piston 4, a push rod 5 and a sealing cap 6, wherein the second piston 4 is disposed in the second syringe 3 and the periphery of the piston is hermetically connected to the inner wall of the second syringe 3, one end of the push rod 5 is connected to the second piston 4, the push rod 5 is pushed to push and pull the second piston 4 to reciprocate along the length direction of the second syringe 3, the first piston 2 is disposed in the first syringe 1 and the periphery of the first piston 2 is hermetically connected to the inner wall of the first syringe 1, the front end of the second syringe 3 is detachably connected to the first piston 2, the injection head of the second syringe 3 passes through the first piston 2 to communicate the cavity of the second syringe 3 with the cavity of the first syringe 1, the second syringe 3 is pushed to pull the second syringe 4 to reciprocate along the length direction of the first syringe 1, the sealing cover 6 is detachably connected with the injection head of the first injection tube 1 in a sealing way.

In particular, the sealing cap 6 is screwed or plugged into the injection head of the first syringe 1.

Specifically, the first injection tube 1 and the second injection tube 3 respectively comprise an injection head 7, an inverted cone part 10 and a barrel body 11 which are sequentially communicated end to end.

As shown in fig. 2 and 3, in order to facilitate the disassembly, the stability during the reciprocating motion is ensured at the same time, the first piston 2 comprises a fixed head and a rubber ring 201, the fixed head comprises a conical head 202, a piston fixing ring 203, a fixed seat 204 and an accommodating cavity 205, the conical head 202, the piston fixing ring 203 and the fixed seat 204 are connected end to form an integrated structure, the accommodating cavity 205 matched with the front end of the second injection cylinder 3 and the injection head 7 of the second injection cylinder 3 is arranged in the middle of the fixed head, the inverted conical part 10 and the cylinder 11 is sleeved outside the piston fixing ring 203, the rubber ring 201 is sleeved outside the piston fixing ring 203, and the fixed seat 204 is flush with the rubber ring 201 all around to tightly cling to the inner wall of the first injection cylinder 1.

Specifically, the front end of the cylinder of the second syringe 3 is connected with the bottom of the accommodating chamber 205 by a thread, or the front end of the cylinder of the second syringe 3 is directly clamped in the accommodating chamber 205.

During the use, open sealed lid 6, outwards pull second injection tube 3, draw pending blood through the injection head 7 of 1 front end of first injection tube, again cover another sealed lid on 1 injection head of first injection tube after accomplishing, then place whole rich platelet plasma preparation facilities in centrifuge and centrifugation (first injection tube 1 injection head 7 down), the blood divides into the three-layer after the centrifugation, from the top down is the plasma layer, platelet layer and red blood cell layer in proper order, pulling push rod 5, take the plasma of upper strata, in the second injection tube 3 is taken out to the platelet, pull down second injection tube 3 from first piston 2, obtain rich platelet plasma in second injection tube 3, can directly inject rich platelet plasma through the injection head at 3 front ends of second injection tube, avoid the in-process of repeatedly changing the household utensils to cause the pollution.

Example 2:

as shown in fig. 4 and 5, the platelet-rich plasma preparation device according to this embodiment includes a first syringe 1, a first piston 2, a second syringe 3, a second piston 4, a push rod 5, a sealing cap 6, a third syringe 9 and a third piston 8, wherein the second piston 4 is disposed in the second syringe 3, the periphery of the piston is hermetically connected to the inner wall of the second syringe 3, one end of the push rod 5 is connected to the second piston 4, the push rod 5 is pushed and pulled to drive the second piston 4 to reciprocate along the length direction of the second syringe 3, the first piston 2 is disposed in the first syringe 1, the periphery of the first piston 2 is hermetically connected to the inner wall of the first syringe 1, the front end of the second syringe 3 is detachably connected to the first piston 2, the injection head of the second syringe 3 passes through the first piston 2, the cavity of the second syringe 3 is communicated with the cavity of the first syringe 1, the second syringe 3 is pushed and pulled to drive the second piston 4 to reciprocate along the length direction of the first syringe 1, third piston 8 is arranged in third injection tube 9, and third piston 8 all around with 9 inner wall sealing connections of third injection tube, 1 front end of first injection tube can be dismantled and be connected on third piston 8, and 1 injection head of first injection tube passes third piston 8 and 9 intercommunications of third injection tube, 1 drive third piston 8 of push-and-pull first injection tube is along 9 length direction reciprocating motion of third injection tube, sealed lid 6 and 1 injection head of first injection tube, 3 injection heads of second injection tube and 9 injection heads of third injection tube all can dismantle sealing connection.

The first injection tube 1, the second injection tube 3 and the third injection tube 9 respectively comprise an injection head 7, an inverted cone part 10 and a cylinder body 11 which are sequentially communicated from head to tail.

In order to facilitate the disassembly, guarantee the steadiness when reciprocating simultaneously, first piston 2 and third piston 8 all include fixed head and rubber ring 201, the fixed head includes conical head 202, the solid fixed ring 203 of piston, fixing base 204 and holding chamber 205, conical head 202, the solid fixed ring 203 of piston, fixing base 204 end to end connection forms the integral type structure, set up in the middle part of the fixed head with second injection tube 3 (or first injection tube 1) injection head 7, reverse cone portion 10 and barrel 11 front end complex holding chamber 205, rubber ring 201 cup joints in the solid fixed ring 203 outside of piston, fixing base 204 is all around hugged closely first injection tube 1 (or third injection tube 9) inner wall with rubber ring 201 parallel and level all around, second injection tube 3 (or first injection tube 1) barrel front end and holding chamber 205 bottom threaded connection.

When in use, the sealing cover 6 is opened, the first injection tube 1 is pulled outwards, blood to be treated is extracted through the injection head at the front end of the third injection tube 9, the sealing cover 6 is covered on the injection head of the third injection tube 9, then the whole platelet-rich plasma preparation device is placed in a centrifuge for centrifugation (the injection head at the front end of the third injection tube 9 faces downwards), the blood is divided into three layers after centrifugation, a plasma layer, a platelet layer and a red blood cell layer are sequentially arranged from top to bottom, the second injection tube 3 is pulled, the plasma and the platelets on the upper layer are extracted into the first injection tube 1, the first injection tube 1 is detached from the third piston 8, the platelet-rich plasma is obtained in the first injection tube 1, the other sealing cover 6 is covered on the injection head of the first injection tube 1, then the platelet-rich plasma preparation device without the third piston 8 and the third injection tube 9 is placed in the centrifuge for centrifugation (the injection head of the first injection tube 1 faces upwards), blood divide into two-layerly again after the centrifugation, from the top down be plasma layer and platelet layer in proper order, in pulling push rod 5 takes out platelet layer to second injection tube 3, obtains the platelet rich plasma that purity is better, can directly inject platelet rich plasma through injecting tube 3 at the second, avoids the in-process of repeatedly changing the household utensils to cause the pollution.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the embodiments and/or portions thereof may be made, and all changes, equivalents, and modifications which fall within the spirit and scope of the utility model are therefore intended to be embraced by the appended claims.

Claims (4)

1. The utility model provides a rich platelet plasma preparation facilities, a serial communication port, including first injection tube, first piston, the second injection tube, the second piston, push rod and sealed lid, the second piston is arranged in the second injection tube and the piston all around with second injection tube inner wall sealing connection, push rod one end and second piston connection, first piston is arranged in first injection tube and first piston all around with first injection tube inner wall sealing connection, second injection tube front end can be dismantled with first piston and be connected, the injection head of second injection tube passes first injection tube piston, with second injection tube cavity and first injection tube cavity intercommunication, sealed lid can dismantle sealing connection with the injection head of first injection tube.

2. A platelet-rich plasma preparation device is characterized by comprising a first injection tube, a first piston, a second injection tube, a second piston, a push rod, a sealing cover, a third injection tube and a third piston, wherein the second piston is arranged in the second injection tube, the periphery of the piston is hermetically connected with the inner wall of the second injection tube, one end of the push rod is connected with the second piston, the first piston is arranged in the first injection tube, the periphery of the first piston is hermetically connected with the inner wall of the first injection tube, the front end of the second injection tube is detachably connected with the first piston, an injection head of the second injection tube penetrates through the first piston, a cavity of the second injection tube is communicated with a cavity of the first injection tube, the third piston is arranged in the third injection tube, the periphery of the third piston is hermetically connected with the inner wall of the third injection tube, the front end of the first injection tube is detachably connected with the third piston, and the injection head of the first injection tube penetrates through the third piston and is communicated with the third injection tube, the sealing cover can be detachably and hermetically connected with the first injection tube injection head, the second injection tube injection head and the third injection tube injection head.

3. The platelet-rich plasma preparation device according to claim 1 or 2, wherein the first, second and/or third syringe barrel comprises an injection head, an inverted conical portion and a barrel body which are sequentially connected end to end.

4. The device for preparing platelet-rich plasma according to claim 3, wherein the first piston and/or the third piston each comprises a fixing head and a rubber ring, the fixing head comprises a conical head, a piston fixing ring, a fixing seat and a containing cavity, the conical head, the piston fixing ring and the fixing seat are connected end to form an integrated structure, the middle part of the fixing head is provided with the containing cavity matched with the injection head of the second injection tube or the first injection tube, the inverted conical part and the front end of the cylinder body, the rubber ring is sleeved outside the piston fixing ring, the periphery of the fixing seat is flush with the periphery of the rubber ring and clings to the inner wall of the first injection tube or the third injection tube, and the front end of the cylinder body of the second injection tube or the first injection tube is in threaded connection with the bottom of the containing cavity.

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