CN218890008U - Injector with detachable inner core push rod - Google Patents

Abstract

The utility model discloses a syringe with a detachable inner core push rod, which relates to the technical field of medical equipment and comprises a first sleeve, a blocking component and a pull rod component, wherein a syringe head is arranged on the right side of the first sleeve, an outer sleeve plug is connected to the outer side of the syringe head and used for sealing the blocking component to be connected to the left end inside the first sleeve, the blocking component comprises an inner core body and a first blocking plug, the first blocking plug is connected to the outer side of the left end of the inner core body, and the pull rod component used for pushing the inner core body is connected to the left side of the inner core body. This plunger push rod detachable syringe is provided with the thread bush, and first pull rod runs through in the internal portion of inner core and through the thread bush of end outer end and the internal thread tightening of inner core, is convenient for make the inner core follow the activity at the in-process that first pull rod carries out the push-and-pull, and corresponding both through this kind of connection also easily reverse the spiral and demolish, and the inside liquid of being convenient for can follow the inner core and pass through, easily draws the use to the solution of separation.

Description

Injector with detachable inner core push rod

Technical Field

The utility model relates to the technical field of medical appliances, in particular to a syringe with a detachable inner core push rod.

Background

Platelets, when activated, release a variety of growth factors that play an important role in promoting proliferation, growth, differentiation and tissue formation of bone cells and osteoblasts. During the platelet plasma production process, the blood plasma needs to be pumped through the piston rod of the injector so as to be pumped or conveyed for use. The injector belongs to one kind of medical apparatus.

The utility model of application number CN201920250069.8 discloses an injector, the distance of the backward movement of the piston rod can be limited by the interference fit between the convex block on the piston rod and the pipe sleeve, compared with the prior art, before the liquid medicine or body fluid is extracted, a user pushes the convex block on the pipe sleeve and rotates the pipe sleeve to enable the pipe sleeve to move along the axial direction of the needle cylinder, then the maximum volume of the injector is adjusted by observing the rubber plug at the front end of the piston rod and the scale mark on the needle cylinder in a matched manner, and when the user extracts liquid, the user only needs to pump the piston rod backward until the convex block is in interference with the pipe sleeve, the observation of the scale mark is not needed, and the injector is easy to operate.

Syringes similar to the above applications currently suffer from the following disadvantages:

the push rod and the core body of the syringe are of an integrated structure, so that the transfer is inconvenient to detach, and the extracted liquid is easy to be polluted in the centrifugal pipetting process in some environments which cannot reach sterile operation.

Accordingly, in view of the above, an injector with a detachable plunger has been proposed, which is improved in view of the conventional structure and drawbacks.

Disclosure of Invention

The present utility model is directed to a removable plunger for a syringe that solves the above-mentioned problems associated with the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides an inner core push rod detachable syringe, includes first sleeve, separation subassembly and pull rod subassembly, first sleeve right side is provided with the cylinder head, and the cylinder head outside is connected with the overcoat end cap, is used for sealing the separation subassembly is connected in the inside left end of first sleeve, and the separation subassembly includes the inner core body and first the blocking that seals, the inner core body left end outside is connected with first the blocking, is used for promoting the inner core body the pull rod subassembly is connected in the inner core body left side, and the pull rod subassembly includes first pull rod, end and thread bush, first pull rod right side fixedly connected with end, and the end outside is provided with the thread bush.

Further, the first blocking plug is connected with the inner core body in a clamping way, and the first blocking plug is hollow.

Further, the first pull rod is in threaded connection with the inner core body through the end head and the threaded sleeve, and the structural size of the outer opening of the end head is identical to the structural size of the left opening of the inner core body.

Further, the separation assembly further comprises a rubber plug and a through pipe, the right side of the inner core body is connected with the rubber plug, and the middle end inside the inner core body is fixedly connected with the through pipe.

Further, the connection surface at the top end of the rubber plug is mutually attached to the connection surface inside the inner core body, and the inner core body and the through pipe are of an integrated structure.

Further, the pull rod assembly further comprises a sealing ring, and the right side of the end head is fixedly connected with the sealing ring.

Further, the inside left end of first sleeve is connected with the second sleeve, and the inside second plug that is provided with of second sleeve, the inside left end sliding connection of second sleeve has the second pull rod.

Further, the opening structure size of the first plugging plug is identical to the outer opening structure size of the second sleeve, and the second sleeve penetrates through the first sleeve.

The utility model provides a syringe with a detachable inner core push rod, which has the following beneficial effects:

the detachable push rod is convenient to detach after extracting the solution, the push rod is convenient to place the centrifuge for quick centrifugation, and the small needle cylinder is inserted in a matching way to extract centrifugate for secondary centrifugation, and the whole process is reinforced and sealed through the sealing piece, so that the risk of invasion of infectious matters such as bacteria is effectively avoided, and the use is convenient.

1. The utility model is provided with the first sealing plug, the outer end of the inner core body is connected with the first sealing plug in a clamping way, and the joint of the first pull rod and the inner core body is sealed through the first sealing plug, so that the sealing structure strength of the joint of the first pull rod and the inner core body is ensured, the pollution of the external non-sterile environment to the inner core interface is isolated, and the safety of the internal environment is ensured.

2. The utility model is provided with the thread bushing, the first pull rod penetrates through the inner core body and is in thread fixation with the inner core body through the thread bushing at the outer end of the end head, so that the inner core body can move along with the first pull rod in the push-pull process, the two connected parts are easy to reversely screw and disassemble correspondingly, the inner liquid can pass through the inner core body conveniently, and the separated solution can be extracted and used easily.

3. The utility model is provided with the second sleeve, the first sleeve can be internally provided with the second sleeve with a small number I, and further the second sleeve is used for extracting the centrifugally layered solution in the first sleeve, so that the material taking safety of the whole device is improved, and pollution caused by exposure to air for working is avoided.

Drawings

FIG. 1 is a schematic view of the internal connection between the first barrel and the plunger of a plunger rod removable syringe according to the present utility model;

FIG. 2 is a schematic perspective view of a pull rod assembly of a plunger removable syringe according to the present utility model;

fig. 3 is a schematic view showing the internal connection structure of the first sleeve and the second sleeve of the syringe with the detachable plunger according to the present utility model.

In the figure: 1. a first sleeve; 2. a syringe head; 3. a jacket plug; 4. a barrier assembly; 401. an inner core body; 402. a rubber stopper; 403. a first closure plug; 404. a through pipe; 5. a pull rod assembly; 501. a first pull rod; 502. an end head; 503. a thread sleeve; 504. a seal ring; 6. a second sleeve; 7. a second closure plug; 8. and a second pull rod.

Detailed Description

Embodiments of the present utility model are described in further detail below with reference to the accompanying drawings and examples. The following examples are illustrative of the utility model but are not intended to limit the scope of the utility model.

As shown in fig. 1 and 2, a plunger rod detachable injector comprises a first sleeve 1, a blocking component 4 and a pull rod component 5, wherein the right side of the first sleeve 1 is provided with a syringe head 2, the outer side of the syringe head 2 is connected with an outer sleeve plug 3 for sealing the blocking component 4 to be connected to the left end inside the first sleeve 1, the blocking component 4 comprises an inner core body 401 and a first blocking plug 403, the outer side of the left end of the inner core body 401 is connected with the first blocking plug 403, the first blocking plug 403 is connected with the inner core body 401 in a clamping way, the first blocking plug 403 is hollow, the outer end of the inner core body 401 is connected with a first blocking plug 403 in a clamping way, and the joint of the first pull rod 501 and the inner core body 401 is sealed through the first blocking plug 403, so that the sealing structure strength of the joint of the first pull rod 501 and the inner core body is ensured, the pollution of an external non-sterile environment to an inner core interface is isolated, and the safety of an internal environment is ensured. The separation assembly 4 further comprises a rubber plug 402 and a through pipe 404, the right side of the inner core body 401 is connected with the rubber plug 402, and the middle end inside the inner core body 401 is fixedly connected with the through pipe 404. The inside left end of first sleeve 1 is connected with second sleeve 6, and the inside second sleeve 6 is provided with second seal plug 7, the inside left end sliding connection of second sleeve 6 has second pull rod 8, first seal plug 403 opening structure size is identical with the outside mouthful structure size of second sleeve 6, and second sleeve 6 runs through inside first sleeve 1, the inside second sleeve 6 that can install No. one of first sleeve 1, and then extract the solution of the inside centrifugation layering of first sleeve 1 through second sleeve 6, improve the extracting security of whole device, avoid exposing to the pollution that carries out work and cause in the air.

As shown in fig. 1 and fig. 3, the pull rod assembly 5 for pushing the inner core 401 is connected to the left side of the inner core 401, and the pull rod assembly 5 includes a first pull rod 501, a tip 502 and a threaded sleeve 503, the right side of the first pull rod 501 is fixedly connected with the tip 502, the outside of the tip 502 is provided with the threaded sleeve 503, the first pull rod 501 is in threaded connection with the inner core 401 through the tip 502 and the threaded sleeve 503, the outer opening structure size of the tip 502 is identical to the left opening structure size of the inner core 401, the first pull rod 501 penetrates through the inner core 401 and is in threaded fixation with the inner core 401 through the threaded sleeve 503 at the outer end of the tip 502, so that the inner core 401 is convenient to follow in the push-pull process of the first pull rod 501, the corresponding two connected parts are easy to be removed by reverse screws, the inner liquid can pass through the inner core 401, and the separated solution is easy to be extracted and used. The pull rod assembly 5 further comprises a sealing ring 504, and the sealing ring 504 is fixedly connected to the right side of the end head 502.

In summary, as shown in fig. 1 to 3, when the syringe with the detachable inner core push rod is used, firstly, a proper amount of blood is pumped into the needle cylinder head 2, then the blood is taken down, the needle cylinder head 2 is sealed by the outer sleeve plug 3, then the first sealing plug 403 is installed, then the inner core body 401 is reversely screwed through the thread sleeve 503 outside the bottom end head 502 of the first pull rod 501 to realize the detachment of the first pull rod 501, the joint of the first pull rod 501 and the inner core body 401 is sealed through the first sealing plug 403 in the non-detachment stage of the first pull rod 501, so that the sealing structural strength of the joint of the first pull rod 501 and the inner core body is ensured, the pollution of the external non-sterile environment to the inner core interface is isolated, the safety of the inner environment is ensured, then the centrifuge is put in, the required centrifugal force and the centrifugal time are set, the centrifugation is performed, in the process, the joint of the centrifuge and the inner core body 401 is correspondingly sealed and reinforced through the first sealing plug 403, the tightness of the whole process is ensured, then the centrifuge is taken out, the first sealing plug 403 is removed, the second sleeve 6 is inserted into the first sleeve 6, the second sleeve 6 is pressed, at the moment, the upper liquid of the first sleeve 1 is transferred into the second sleeve 6, the second sleeve 6 is taken out, the bottom end barrel head part is sealed through the jacket plug 3 with corresponding size, the second sealing plug 7 is added, the second pull rod 8 is removed through the mode of removing the first pull rod 501, the corresponding centrifuge is placed in the second sleeve 6, the required centrifugal force and the centrifugal time are set, the centrifuge is taken out after the centrifugation is completed, the second pull rod 8 is reinstalled, the jacket plug 3 at the bottom end of the second sleeve 6 is removed, the connector and the injector are installed at the needle barrel head 2 at the bottom end of the second sleeve 6, the required lower liquid is transferred to the injector, finally, the injector is taken down; correspondingly, after the inside of the first sleeve 1 is subjected to centrifugal treatment, unnecessary liquid can be discharged through the needle cylinder head 2 at the bottom end of the first sleeve 1, upper liquid is reserved, the jacket plug 3 is sealed again for secondary centrifugation, and the subsequent required installation requirement of the second sleeve 6 is eliminated; the whole centrifugal treatment process is reinforced through multiple seals, pollution is caused in the pipetting process, invasion of pollutants such as bacteria is effectively prevented, the device is suitable for operating rooms and clinics which cannot reach a sterile environment, and the use process of the syringe with the detachable whole inner core push rod is completed.

The embodiments of the utility model have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the utility model in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, and to enable others of ordinary skill in the art to understand the utility model for various embodiments with various modifications as are suited to the particular use contemplated.

Claims (8)

1. The utility model provides a plunger push rod detachable syringe, includes first sleeve (1), separation subassembly (4) and pull rod subassembly (5), its characterized in that: the utility model discloses a syringe that just seals up, including cylinder head (2), cylinder head (2) outside is provided with cylinder head (2), is used for sealing separation subassembly (4) are connected in the inside left end of first sleeve (1), and separation subassembly (4) are including inner core body (401) and first shutoff plug (403), inner core body (401) left end outside is connected with first shutoff plug (403), is used for promoting inner core body (401) pull rod subassembly (5) are connected in inner core body (401) left side, and pull rod subassembly (5) are including first pull rod (501), end (502) and thread bush (503), first pull rod (501) right side fixedly connected with end (502), and the end (502) outside is provided with thread bush (503).

2. The plunger removable syringe of claim 1 wherein the first plug (403) is snap-fit to the plunger body (401) and the first plug (403) is hollow.

3. The detachable syringe of claim 1, wherein the first pull rod (501) is screwed with the inner core body (401) through a tip (502) and a thread sleeve (503), and the outer opening structure size of the tip (502) is matched with the left opening structure size of the inner core body (401).

4. The syringe with the detachable inner core push rod according to claim 1, wherein the blocking assembly (4) further comprises a rubber plug (402) and a through pipe (404), the right side of the inner core body (401) is connected with the rubber plug (402), and the middle end inside the inner core body (401) is fixedly connected with the through pipe (404).

5. The detachable plunger as set forth in claim 4, wherein the top end connecting surface of the rubber stopper (402) is attached to the inner connecting surface of the inner core body (401), and the inner core body (401) is integrally formed with the tube (404).

6. The plunger removable syringe of claim 1 wherein the pull rod assembly (5) further comprises a sealing ring (504) and the sealing ring (504) is fixedly connected to the right side of the tip (502).

7. The syringe with the detachable inner core push rod according to claim 1, wherein the left end inside the first sleeve (1) is connected with a second sleeve (6), a second sealing plug (7) is arranged inside the second sleeve (6), and the left end inside the second sleeve (6) is slidably connected with a second pull rod (8).

8. The plunger removable syringe of claim 7 wherein the first plug (403) has an opening sized to fit the outer opening sized of the second sleeve (6) and the second sleeve (6) extends through the interior of the first sleeve (1).

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