CN213357534U - Controllable formula stem cell syringe - Google Patents

Abstract

The utility model discloses a controllable formula stem cell syringe. The method comprises the following steps: the front end of the injection tube is provided with a needle head, the tail end of the injection tube is provided with a periphery, an axial cavity is arranged in the injection tube, and a movable piston core rod is arranged in the cavity; a pair of limiting holes oppositely arranged at the periphery; the sleeve is sleeved on the periphery of the injection tube, and external threads are arranged on the periphery of the sleeve; the stop block is sleeved on the sleeve and is in threaded fit with the sleeve; the first limiting block is axially movably arranged on the sleeve and positioned in front of the stop block, and a gap is formed between the inner periphery of the first limiting block and the outer periphery of the sleeve; the guide rods respectively penetrate through the limiting holes and are arranged in parallel to the axial direction of the injection tube, and the front ends of the guide rods are respectively connected with the first limiting block; the second limiting block is arranged at the tail end of the guide rod; wherein, the length of the guide rod is equal to that of the piston core rod. The utility model has the advantages that: the amount of aspiration can be precisely controlled.

Description

Controllable formula stem cell syringe

Technical Field

The utility model relates to a cell engineering field, in particular to controllable formula stem cell syringe.

Background

Stem cells are primitive cells having the potential of self-replication and multi-directional differentiation, are the original cells of the body, and are the primitive cells forming various tissues and organs of the human body. Under certain conditions, it can differentiate into various functional cells or tissues and organs, which are called "universal cells" in medical science, and stem cells are further divided into embryonic stem cells and adult stem cells, which are a part of undifferentiated primitive cells in a dormant state in the human body.

In the cell engineering research process, a stem cell solution is often required to be transferred, wherein a stem cell injector is one of the common tools for transferring the stem cell solution, but when the existing stem cell injector is used, although volume scale indication is arranged on the outer side of the injector, the accurate holding of the drawing amount and the injection amount in the injection process cannot be determined.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a controllable formula stem cell syringe, its volume that can accurate control absorb.

In order to achieve the above object, the utility model adopts the following technical scheme, include:

the front end of the injection tube is provided with a needle head, the tail end of the injection tube is provided with a port, the port is provided with a periphery extending outwards, an axial cavity is arranged inside the injection tube, and a movable piston core rod is arranged in the cavity;

a pair of limiting holes oppositely arranged at the periphery;

the sleeve is sleeved on the periphery of the injection tube, and external threads are arranged on the periphery of the sleeve; and

the stop block is sleeved on the sleeve and is in threaded fit with the sleeve;

the first limiting block is axially movably arranged on the sleeve and positioned in front of the stop block, and a gap is formed between the inner periphery of the first limiting block and the outer periphery of the sleeve;

the guide rods respectively penetrate through the limiting holes and are arranged in parallel to the axial direction of the injection tube, and the front ends of the guide rods are respectively connected with the first limiting block;

the second limiting block is arranged at the tail end of the guide rod and used for limiting the piston core rod;

wherein, the length of the guide rod is equal to that of the piston core rod.

Preferably, the method further comprises the following steps:

the scale marks are arranged on the injection cylinder along the axial direction and used for indicating the volume of the liquid in the cavity;

and the groove is arranged on the sleeve and corresponds to the position of the scale mark.

Preferably, the piston core rod includes:

the piston is arranged at the front end of the piston core rod, the outer periphery of the piston is matched with the inner periphery of the injection cylinder, and the piston is used for sucking or discharging liquid or air in the injection cylinder;

the front end of the piston rod is connected with the piston, and at least part of the piston rod extends out of the injection cylinder;

an end block provided at an end of the piston rod for pushing in and pulling out the piston rod.

Preferably, the method further comprises the following steps:

and the convex column is arranged at the front end of the piston, is matched with the front end of the syringe and is used for exhausting air between the piston and the needle head.

Preferably, the method further comprises the following steps:

and the through hole is arranged in the center of the second limiting block, and the diameter of the limiting hole is smaller than that of the end block.

Preferably, the method further comprises the following steps:

an iron piece provided on a rear end face of the end block;

the electromagnet is arranged on the front end face of the second limiting block and used for adsorbing the iron sheet;

and the switch is arranged on the second limiting block and used for controlling the on-off of the electromagnet.

Preferably, the method further comprises the following steps:

the guide block is arranged at the port of the injection tube, is matched with the periphery of the piston rod and is used for limiting the piston rod.

The utility model has the advantages that: the position of the stop block in the axial direction of the sleeve is adjusted by rotating the stop block, so that the suction amount can be accurately controlled; the front end face of the second limiting block is provided with an electromagnet which can adsorb an iron sheet arranged on the rear end face of the end block, so that the piston core rod is fixed, and the situation that the subsequent injection amount is insufficient due to the piston core rod after liquid is sucked is avoided.

Drawings

Fig. 1 is a perspective view of a controllable stem cell injector of the utility model.

Fig. 2 is a sectional view of the utility model of a controllable stem cell injector.

Fig. 3 is a sectional view of the injection cylinder of the utility model.

Fig. 4 is a perspective view of a piston core rod of the utility model.

Fig. 5 is a perspective view of the middle tube of the utility model.

Fig. 6 is a schematic diagram of the first stopper, the second stopper and the guide rod in the utility model.

Detailed Description

The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.

It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.

As shown in fig. 1-6, the utility model discloses an implementation form, in order to realize above-mentioned purpose, the utility model discloses a following technical scheme is adopted, include:

the syringe 110 is made of a polymer material, a needle 111 is disposed at the front end of the syringe 110, a port 112 is disposed at the end of the syringe 110, an outwardly extending periphery 113 is disposed at the port 112, an axial cavity 114 is disposed inside the syringe 110, and a movable plunger 120 is disposed inside the cavity 114. Preferably, the syringe barrel 110 is made of PP material. More preferably, the piston core rod 120 includes: the piston 121 is arranged at the front end of the piston core bar 120, and the outer circumference of the piston 121 is matched with the inner circumference of the syringe 110 and is used for sucking or discharging liquid or air in the syringe 110; the front end of the piston rod 122 is connected with the piston 121 and at least partially extends out of the syringe barrel 110; an end block 123 is provided at the end of the piston rod 122 for pushing and pulling the piston rod 122 in and out. A pair of stopper holes 113a are oppositely disposed at the peripheral edge 113.

The sleeve 130 is a cylindrical tubular structure and is made of a polymer material. The sleeve 130 is sleeved on the outer periphery of the syringe barrel 110, and an external thread 131 is arranged on the outer periphery of the sleeve 130. Preferably, the sleeve 130 is made of PVC material. As a further preference, an axial slot 132 is provided on the sleeve 130.

The stopper 140 is sleeved on the sleeve 130, and an internal thread matched with the external thread 131 is arranged on the inner periphery of the stopper and is used for being in threaded fit with the sleeve 130.

The first stopper 151 is axially movably disposed on the sleeve in front of the stopper 140, and a gap is formed between the inner circumference of the first stopper 150 and the outer circumference of the sleeve 130. A pair of guide rods 152 respectively penetrate through the limiting holes 113a and are arranged in parallel to the axial direction of the injection cylinder 110, and the front ends of the guide rods 152 are respectively connected with the first limiting blocks 151; the second limiting block 153 is arranged at the end of the guide rod 152 and used for limiting the piston core rod 120; wherein, the length of the guide rod is equal to that of the piston core rod.

In the using process, the stopper 140 is rotated to move axially along the sleeve 130, the position of the stopper 140 can be determined according to the amount to be sucked, the needle 111 is then inserted into the solution to be sucked, the piston core rod 120 is pulled, when the preset amount is sucked, the first limiting block 151 is abutted against the stopper 140, the position of the second limiting block 153 is fixed, the piston core rod 120 cannot be pulled backwards, and the sucking amount is accurately controlled. Then, the solution in the syringe barrel 110 is pushed out of the designated container, so as to realize the precise control of the injection amount.

In another embodiment, the method further comprises: the scale marks are arranged on the syringe barrel 110 along the axial direction and used for indicating the liquid volume in the cavity 114; a slot 132 is provided on the sleeve 130 corresponding to the position of the graduation marks.

In another embodiment, the plunger core pin 120 includes: the piston 121 is arranged at the front end of the piston core bar 120, and the outer circumference of the piston 121 is matched with the inner circumference of the syringe 110 and is used for sucking or discharging liquid or air in the syringe 110; the front end of the piston rod 122 is connected with the piston 121 and at least partially extends out of the syringe barrel 110; an end block 123 is provided at the end of the piston rod 122 for pushing and pulling the piston rod 122 in and out.

In another embodiment, the method further comprises: the convex column 124 is disposed at the front end of the piston 121, and is matched with the front end of the syringe 110, for exhausting air between the piston 121 and the needle 111.

In another embodiment, the method further comprises: a through hole 153a is provided in the center of the second stopper 153, and the stopper hole 153a has a diameter smaller than that of the end block 123.

In another embodiment, the method further comprises: an iron piece 123a is provided on the rear end face of the end block 123; the electromagnet 153b is arranged on the front end face of the second limiting block 153 and used for adsorbing the iron sheet; the switch 153c is arranged on the second limiting block and used for controlling the on-off of the electromagnet.

In another embodiment, the method further comprises: and a guide block 115. The guide block 115 is disposed at the port 112 of the syringe barrel 110 and matches with the outer periphery of the piston rod 122 for limiting the piston rod 122.

To sum up, the helicobacter pylori detection kit 1 of the present invention can precisely control the amount of absorption by rotating the stopper 140 to adjust the position thereof in the axial direction of the sleeve 130; the front end face of the second limiting block 153a is provided with an electromagnet 153b which can adsorb an iron sheet 123a arranged on the rear end face of the end block, so that the piston core rod 120 is fixed, and the situation that the subsequent injection amount is insufficient due to the piston core rod 120 after liquid is sucked is avoided.

While the embodiments of the invention have been described above, it is not intended to be limited to the details shown, or described, but rather to cover all modifications, which would come within the scope of the appended claims, and all changes which come within the meaning and range of equivalency of the art are therefore intended to be embraced therein.

Claims (7)

1. A controllable stem cell injector, comprising:

the front end of the injection tube is provided with a needle head, the tail end of the injection tube is provided with a port, the port is provided with a periphery extending outwards, an axial cavity is arranged inside the injection tube, and a movable piston core rod is arranged in the cavity;

a pair of limiting holes oppositely arranged at the periphery;

the sleeve is sleeved on the periphery of the injection tube, and external threads are arranged on the periphery of the sleeve; and

the stop block is sleeved on the sleeve and is in threaded fit with the sleeve;

the first limiting block is axially movably arranged on the sleeve and positioned in front of the stop block, and a gap is formed between the inner periphery of the first limiting block and the outer periphery of the sleeve;

the guide rods respectively penetrate through the limiting holes and are arranged in parallel to the axial direction of the injection tube, and the front ends of the guide rods are respectively connected with the first limiting block;

the second limiting block is arranged at the tail end of the guide rod and used for limiting the piston core rod;

wherein, the length of the guide rod is equal to that of the piston core rod.

2. The controllable stem cell injector of claim 1, further comprising:

the scale marks are arranged on the injection cylinder along the axial direction and used for indicating the volume of the liquid in the cavity;

and the groove is arranged on the sleeve and corresponds to the position of the scale mark.

3. The controllable stem cell injector of claim 1 or 2, wherein the plunger core rod comprises:

the piston is arranged at the front end of the piston core rod, the outer periphery of the piston is matched with the inner periphery of the injection cylinder, and the piston is used for sucking or discharging liquid or air in the injection cylinder;

the front end of the piston rod is connected with the piston, and at least part of the piston rod extends out of the injection cylinder;

an end block provided at an end of the piston rod for pushing in and pulling out the piston rod.

4. The controllable stem cell injector of claim 3, further comprising:

and the convex column is arranged at the front end of the piston, is matched with the front end of the syringe and is used for exhausting air between the piston and the needle head.

5. The controllable stem cell injector of claim 3, further comprising:

and the through hole is arranged in the center of the second limiting block, and the diameter of the limiting hole is smaller than that of the end block.

6. The controllable stem cell injector of claim 3, further comprising:

an iron piece provided on a rear end face of the end block;

the electromagnet is arranged on the front end face of the second limiting block and used for adsorbing the iron sheet;

and the switch is arranged on the second limiting block and used for controlling the on-off of the electromagnet.

7. The controllable stem cell injector of claim 3, further comprising:

the guide block is arranged at the port of the injection tube, is matched with the periphery of the piston rod and is used for limiting the piston rod.

Images