CN112790773A

CN112790773A - Piston hemostix

Info

Publication number: CN112790773A
Application number: CN202110136707.5A
Authority: CN
Inventors: 郭健
Original assignee: Xuzhou Hongyang Medical Technology Co ltd
Current assignee: Guo Jian
Priority date: 2021-02-01
Filing date: 2021-02-01
Publication date: 2021-05-14
Also published as: WO2022160372A1

Abstract

The invention discloses a piston type hemostix, which comprises a hemostix body, wherein a first rubber plug capable of being penetrated by a needle is arranged at the first end of the hemostix body, a second rubber plug is also arranged in the hemostix body, and when the interior of the hemostix body is in non-negative pressure state, the second rubber plug is in sealed sliding connection with the hemostix body; when the inside negative pressure that is of hemostix body, hemostix body second end still is equipped with blocking mechanism, and blocking mechanism can dismantle with the hemostix body and be connected, and blocking mechanism restriction second plug slides to hemostix body first end owing to the internal and external pressure differential of hemostix body. The piston type hemostix can realize repeated needle-threading blood sampling through the first rubber plug, and the blood is sealed in a relatively closed space after the blood sampling, so that secondary pollution is prevented, and the operation is simple.

Description

Piston hemostix

Technical Field

The invention relates to the technical field of medical instruments, in particular to a piston type hemostix.

Background

Gather rich platelet (PRP) and generally use syringe blood sampling earlier and then pour into the centrifuging tube into, because the centrifuging tube needs many times centrifugation bloodletting, so will open the centrifuging tube many times, have secondary pollution's risk, and the operation is very inconvenient, consequently, needs to improve the centrifuging tube.

Disclosure of Invention

The invention provides a piston type hemostix, aiming at solving the problem that secondary pollution is easy to occur when a centrifugal tube needs to be opened for blood collection after centrifugation in the prior art.

In order to achieve the technical purpose, the invention adopts the following technical scheme:

a piston hemostix comprises a hemostix body, wherein a first rubber plug capable of being penetrated by a needle is arranged at the first end of the hemostix body, a second rubber plug is also arranged in the hemostix body, and when the interior of the hemostix body is non-negative pressure, the second rubber plug is in airtight sliding connection with the hemostix body; when the inside negative pressure that is of hemostix body, hemostix body second end still is equipped with blocking mechanism, and blocking mechanism can dismantle with the hemostix body and be connected, and blocking mechanism restriction second plug slides to hemostix body first end owing to the internal and external pressure differential of hemostix body.

Preferably, the stop gear is the block, and the block includes roof and lateral wall, is equipped with the internal thread in the lateral wall, hemostix body second end be equipped with internal thread complex external screw thread, the roof inboard is equipped with annular protrusion, one side that the second plug is close to the roof be equipped with the protruding complex annular groove of annular, the second plug in the annular groove outside compresses tightly the part for cyclic annular, the annular protrusion inserts in the annular groove, cyclic annular compresses tightly the part cover and establishes in the protruding outside of annular, cyclic annular compresses tightly the part and compresses tightly and restricts the second plug and slide between roof and hemostix body second end.

Preferably, the annular protrusion is wedge-shaped in cross-section.

Preferably, the annular bulge struts the annular pressing part, so that the diameter of the annular pressing part is larger than the cross-sectional diameter of the second end of the hemostix body.

Compared with the prior art, the invention has the beneficial effects that:

according to the piston type hemostix, the pressure in the hemostix body is adjusted through the blocking mechanism, blood is sealed in the hemostix body after blood collection, multiple blood collection after centrifugation can be realized through the first rubber plug, and secondary pollution is prevented.

Drawings

For a clearer explanation of the embodiments or technical solutions of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for a person skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic structural view of the piston hemostix when the piston hemostix is not under negative pressure;

FIG. 2 is a schematic view of the piston hemostix in a negative pressure state; (ii) a

FIG. 3 is an enlarged view of a portion of the structure of FIG. 2 at A;

FIG. 4 is a perspective view of the cap;

fig. 5 is a perspective view of the second rubber plug.

In the figure: 1. a hemostix body; 1-1, a first end of the hemostix body; 1-2, a second end of the hemostix body; 2. a first rubber plug; 3. a second rubber plug; 3-1, annular grooves; 3-2, an annular compression component; 4. capping; 4-1, a top wall; 4-2, side wall; 4-3, annular protrusion; 5. an internal thread; 6. and (4) external threads.

Detailed Description

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 of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

A piston hemostix comprises a hemostix body 1, a first rubber plug 2 capable of being penetrated by a needle is arranged at a first end 1-1 of the hemostix body, and the first rubber plug 2 is fixedly connected with the first end 1-1 of the hemostix body. A second rubber plug 3 is also arranged in the hemostix body 1, and as shown in figure 1, when the inside of the hemostix body 1 is non-negative pressure, the second rubber plug 3 is in sealed sliding connection with the hemostix body 1; as shown in fig. 2-5, when the interior of the hemostix body 1 is negative pressure, the second end 1-2 of the hemostix body is further provided with a blocking mechanism, the blocking mechanism is detachably connected with the hemostix body 1, and the blocking mechanism limits the second rubber plug 3 from sliding towards the first end 1-1 of the hemostix body due to the difference between the internal pressure and the external pressure of the hemostix body 1. The blocking mechanism is a cap 4, the cap 4 comprises a top wall 4-1 and a side wall 4-2, an internal thread 5 is arranged in the side wall 4-2, an external thread 6 matched with the internal thread 5 is arranged at the second end 1-2 of the hemostix body, an annular bulge 4-3 is arranged on the inner side of the top wall 4-1, and the section of the annular bulge 4-3 is wedge-shaped. One side of the second rubber plug 3 close to the top wall 4-1 is provided with an annular groove 3-1 matched with the annular bulge 4-3, the second rubber plug 3 outside the annular groove 3-1 is an annular pressing part 3-2, and the annular pressing part 3-2 is a deformable soft body structure. The annular bulge 4-3 is inserted into the annular groove 3-1, the annular pressing part 3-2 is sleeved outside the annular bulge 4-3, and the annular bulge 4-3 supports the annular pressing part 3-2, so that the diameter of the annular pressing part 3-2 is larger than the diameter of the cross section of the second end 1-2 of the hemostix body. The annular pressing component 3-2 presses between the top wall 4-1 and the second end 1-2 of the hemostix body to limit the sliding of the second rubber plug 3.

The piston type hemostix is divided into a blood sampling stage and a blood sampling stage after centrifugation when in negative pressure use. During the blood sampling stage, the hemostix body 1 is under negative pressure, and the blocking mechanism limits the second rubber plug 3 to slide towards the first end 1-1 of the hemostix body due to the difference between the internal pressure and the external pressure of the hemostix body 1. Blood is collected by threading a needle on the first rubber plug 2. After the blood sampling is finished, the blocking mechanism is released, and the second rubber plug 3 slides towards the first end 1-1 of the blood sampler body due to the difference between the internal pressure and the external pressure of the blood sampler body 1. Specifically, the cap 4 is screwed out in the direction away from the first end 1-1 of the hemostix body, the compression state between the annular compression part 3-2 and the top wall 4-1 is released, external air enters a gap between the annular compression part 3-2 and the top wall 4-1, the second rubber plug 3 is subjected to the action of internal and external pressure difference, the annular compression part 3-2 deforms under the action of pressure, and the diameter of the annular compression part 3-2 is smaller than the diameter of the cross section of the hemostix body 1. The second rubber plug 3 slides towards the first end 1-1 of the hemostix body until the internal and external air pressures of the hemostix body 1 are balanced. Then, pack into aseptic bag with hemostix body 1 and carry out high-speed centrifugation for the first time, form three layering from hemostix body first end 1-1 to hemostix body second end 1-2 after the high-speed centrifugation for the first time: red blood cell layer, platelet layer, serum layer. The first rubber plug 2 at the first end 1-1 of the hemostix body is punctured with a needle to extract the dark red blood cell layer, and the second rubber plug 3 slides towards the first end 1-1 of the hemostix body in the extraction process, so that the balance of the internal and external air pressures of the hemostix body 1 is always kept. Then shake the hemostix body 1 evenly, do the second high speed centrifugation, the platelet is concentrated in the first end 1-1 of hemostix body after the second high speed centrifugation, the first plug 2 of the first end 1-1 of hemostix body is punctured to extract the platelet, in the extracting process, the second plug 3 slides to the first end 1-1 of hemostix body, always keep the internal and external air pressure balance of hemostix body 1. After the drawing is completed, the remaining blood sample portion in the blood collecting device body 1 is discarded.

When the piston type hemostix is used under non-negative pressure, the second rubber plug 3 is hermetically and slidably connected with the hemostix body 1, and blood is injected through the first rubber plug 2.

Claims

1. The utility model provides a piston hemostix, includes hemostix body (1), and hemostix body first end (1-1) is equipped with first plug (2) that can wear the needle, its characterized in that: a second rubber plug (3) is also arranged in the hemostix body (1),

when the interior of the hemostix body (1) is under non-negative pressure, the second rubber plug (3) is in sealed sliding connection with the hemostix body (1);

when the inside negative pressure that is of hemostix body (1), hemostix body second end (1-2) still is equipped with barrier mechanism, barrier mechanism can dismantle with hemostix body (1) and be connected, barrier mechanism restriction second plug (3) slides to hemostix body first end (1-1) owing to the internal and external pressure difference of hemostix body (1).

2. The piston-type hemostix according to claim 1, wherein: the blocking mechanism is a cover cap (4), the cover cap (4) comprises a top wall (4-1) and a side wall (4-2), an internal thread (5) is arranged in the side wall (4-2), a second end (1-2) of the hemostix body is provided with an external thread (6) matched with the internal thread (5), an annular bulge (4-3) is arranged on the inner side of the top wall (4-1), one side, close to the top wall (4-1), of the second rubber plug (3) is provided with an annular groove (3-1) matched with the annular bulge (4-3), the second rubber plug (3) on the outer side of the annular groove (3-1) is an annular pressing part (3-2), the annular bulge (4-3) is inserted into the annular groove (3-1), and the annular pressing part (3-2) is sleeved on the outer side of the annular bulge (4-3), the annular pressing part (3-2) is pressed between the top wall (4-1) and the second end (1-2) of the hemostix body to limit the sliding of the second rubber plug (3).

3. The piston-type hemostix according to claim 2, wherein: the section of the annular bulge (4-3) is wedge-shaped.

4. The piston-type hemostix according to claim 2, wherein: the annular bulge (4-3) is used for expanding the annular pressing part (3-2), so that the diameter of the annular pressing part (3-2) is larger than the diameter of the cross section of the second end (1-2) of the hemostix body.