CN115608432A - a micro syringe - Google Patents

Abstract

The invention discloses a microinjector, which comprises a syringe, an adjustment assembly and a limit assembly, one end of the adjustment assembly is connected with the needle tube of the syringe, and the other end of the adjustment assembly is connected with the piston rod of the syringe. One end of the limiting assembly is connected to the needle tube of the syringe, and the other end of the limiting assembly is connected to the needle of the syringe; the adjusting assembly includes a fixing part and an adjusting part, and the fixing part One end of the fixing part is connected with the needle tube of the syringe, the other end of the fixing part is connected with one end of the regulating part, and the other end of the regulating part is connected with the piston rod of the syringe. Compared with the existing micro-injector, the technical solution of the present invention realizes the visualization and precision of the injection by setting the syringe, the adjustment component and the limit component, and makes the injection volume accurately reach the expected value during the actual operation through the adjustment component.

Description

a micro syringe

technical field

The invention belongs to the technical field of medical instruments, and in particular relates to a micro-injector.

Background technique

Microinjectors are widely used in medical and biological related experimental operations. At present, the injection volume of micro-injectors needs to be estimated by the operator's experience, and it is difficult to achieve the standard of visualization and accuracy, which makes it difficult to accurately achieve the expected value in the actual operation process.

The present invention provides a micro-injector aiming at the above-mentioned problems.

Contents of the invention

In order to overcome the problems proposed in the background technology, the present invention adopts the following technical solutions:

A microinjector, which includes a syringe, an adjustment assembly and a stop assembly, one end of the adjustment assembly is connected to the needle tube of the syringe, the other end of the adjustment assembly is connected to the piston rod of the syringe, the One end of the limiting assembly is connected to the needle tube of the syringe, and the other end of the limiting assembly is connected to the needle of the syringe; the adjusting assembly includes a fixing part and an adjusting part, and one end of the fixing part is connected to the The needle tube of the syringe is connected, the other end of the fixing part is connected with one end of the regulating part, and the other end of the regulating part is connected with the piston rod of the syringe.

In some embodiments of the present application, the adjusting part includes an adjusting part and a rotating part, one end of the rotating part is connected with the fixed part, and the other end of the rotating part is connected with one end of the adjusting part , the other end of the adjusting member is connected with the fixing part.

Further, the adjusting part is provided with a first limiting hole, and the fixing part is provided with a second limiting hole, the opening of the first limiting hole is rectangular, and the opening of the first limiting hole is The central axis in the length direction of the adjustment member is parallel to the central axis in the length direction of the adjustment member, and at least two of the first limiting hole and the second limiting hole are provided, and the fixing part and the first limiting hole It is flexibly connected, and the adjusting member is flexibly connected with the second limiting hole.

In some embodiments of the present application, the adjustment assembly includes a locking component, one end of the locking component is connected to the fixed component, and the other end of the locking component is connected to the rotating member.

Further, the locking part includes a first locking part and a second locking part, and the first locking part and the second locking part are distributed symmetrically about the central axis of the fixing part; the first locking part The locking part includes a locking slot and a locking piece, one end of the locking slot is connected to the fixing part, the other end of the locking slot is detachably connected to one end of the locking piece, The other end of the locking part is movably connected with the rotating part. The locking slots are distributed in a circular array along the inner side wall of the fixing component.

Further, the rotating part is provided with a placement slot 1 and a placement slot 2, the placement slot 1 and the placement slot 2 are symmetrically distributed about the central axis of the fixed part, and the locking part is provided with a spring, so that The locking part is located in the placement slot one, and one end of the spring is connected to the locking part, and the other end of the spring is connected to the placement slot one; the second locking part is connected to the placement slot one. The first locking part is provided with the same structure.

In some embodiments of the present application, the limiting component includes a limiting member 1 and a limiting member 2, the limiting member 1 is provided with a through hole 1, and the limiting member 2 is provided with a through hole 2 , the needle of the syringe passes through the first through hole, and the needle of the syringe is detachably connected to the second through hole, the first stopper is connected to one end of the second stopper, the stopper The other end of the second part is connected with the needle tube of the syringe.

Further, the first limiting member is provided with a limiting cavity, and the diameter of the inner wall of the limiting cavity gradually decreases from the end where the limiting cavity is closer to the second limiting member to the other end, and the limiting cavity It is detachably connected with the second limiting member, and the second limiting member is provided with a first groove body, and at least three of the first groove bodies are provided, and the first groove body is in the form of a circle on the second limiting member Array distribution.

Beneficial effects of the present invention: Compared with the existing micro-injector, the technical solution of the present invention realizes the visualization and precision of the injection by setting the syringe, the adjustment assembly and the limit assembly, and makes the injection volume accurate during the actual operation through the adjustment assembly achieve the expected value.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of the present invention;

Fig. 2 is a structural schematic diagram of the adjustment assembly of the present invention;

Fig. 3 is the split schematic diagram of overall structure of the present invention;

Fig. 4 is a sectional view of the adjustment assembly of the present invention;

Fig. 5 is a cross-sectional view of the structure of the fixed part, the rotating part and the adjusting part of the present invention;

Fig. 6 is a cross-sectional view of the structure of the fixed part and the rotating part of the present invention;

Fig. 7 is a structural schematic diagram of the fixing part of the present invention;

Fig. 8 is a structural schematic diagram of the rotating member of the present invention;

Fig. 9 is a schematic diagram of the needle structure of the present invention;

Fig. 10 is a schematic diagram of the second structure of the limiting member of the present invention;

Fig. 11 is a cross-sectional view of the structure of the limiting assembly of the present invention;

In the figure, 1, fixed part; 11, rotating part; 111, locking part; 112, spring; 12, adjusting part; 121, handle part; 122, first limit hole; . Locking slot; 2. Piston rod; 21. Needle; 3. Limiting piece one; 31. Limiting piece two; 32. Limiting cavity.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described below through specific specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. Those skilled in the art can learn from this Other advantages and effects of the present invention can be easily understood from the content disclosed in the specification. The present invention can also be implemented or applied through other different specific implementation modes. In the case of no conflict, the following embodiments and the features in the embodiments can be combined with each other. Based on the embodiments of the present invention, those of ordinary skill in the art will All other embodiments obtained without creative work fall within the scope of protection of the present invention.

Figures 1-11 show the main technical content of this embodiment. This specific embodiment provides a microinjector, which includes a syringe, an adjustment assembly and a limit assembly. One end of the adjustment assembly is connected to the needle tube of the syringe, and the adjustment assembly The other end of the stopper assembly is connected with the piston rod 2 of the syringe, one end of the stopper assembly is connected with the needle tube of the syringe, and the other end of the stopper assembly is connected with the needle 21 of the syringe. More specifically, the adjusting assembly includes a fixing part 1 and an adjusting part, one end of the fixing part 1 is connected with the needle tube of the syringe, the other end of the fixing part 1 is connected with one end of the adjusting part, and the other end of the adjusting part is connected with the piston rod of the syringe 2-phase connection.

In this embodiment, the adjusting part includes an adjusting part 12 and a rotating part 11, one end of the rotating part 11 is connected with the fixed part 1, the other end of the rotating part 11 is connected with one end of the adjusting part 12, and the other end of the adjusting part 12 Connect with the fixed part 1. More specifically, threads are provided on the inner sidewall of the rotating member 11 , and threaded sections matching the inner sidewall of the rotating member 11 are provided on the outer sidewall of the adjusting member 12 . Through the rotation of the rotating member 11, the thread on the inner wall of the rotating member 11 drives the adjustment member 12 to move, thereby determining the injection amount. The adjusting part 12 is provided with a handle part 121 , and the handle part 121 is connected with the adjusting part 12 . This arrangement enables the operator to better grasp the syringe for injection. The adjusting part 12 is provided with a first limiting hole 122, and the fixed part 1 is provided with a second limiting hole 13. The opening of the first limiting hole 122 is rectangular, and the length direction of the opening of the first limiting hole 122 is The central axis is parallel to the central axis in the length direction of the adjusting member 12, and at least two first limiting holes 122 and second limiting holes 13 are provided, the fixing part 1 is movably connected with the first limiting hole 122, and the adjusting member 12 and The second limiting hole 13 is flexibly connected. Through this arrangement, the adjusting member 12 can only move relative to the fixed member 1 under the drive of the rotating member 11 , but cannot rotate relative to it, which is more convenient for the operator to hold the syringe.

In this embodiment, the adjustment assembly includes a locking component, one end of the locking component is connected to the fixed component 1 , and the other end of the locking component is connected to the rotating member 11 . This arrangement can prevent the adjustment member 12 from moving unintentionally, thereby affecting the accuracy of the injection volume. More specifically, the locking component includes a first locking component and a second locking component, and the first locking component and the second locking component are distributed symmetrically about the central axis of the fixing component 1 . The first locking part includes a locking slot 14 and a locking piece 111, one end of the locking slot 14 is connected to the fixed part 1, and the other end of the locking slot 14 is detachably connected to one end of the locking piece 111, The other end of the locking member 111 is movably connected with the rotating member 11 . The locking slots 14 are distributed in a circular array along the inner wall of the fixing component 1 . The rotating part 11 is provided with a placement slot 1 and a placement slot 2, and the placement slot 1 and placement slot 2 are symmetrically distributed about the central axis of the fixed part 1. The locking part 111 is provided with a spring 112, and the locking part 111 is located in the placement slot 1. One end of the spring 112 is connected to the locking member 111 , and the other end of the spring 112 is connected to the slot one. The second locking part has the same structure as the first locking part. During specific use, the operator can separate the locking member 111 from the locking slot 14 by pressing the locking member 111. At this time, the rotating member 11 is rotated, and the rotating member 11 drives the adjusting member 12 to move. Under the action of the first limiting hole 122 and the second limiting hole 13, the adjusting member 12 can only move relative to the fixed part 1, but cannot rotate relative to it. After the adjusting member 12 moves to a predetermined height, the locking member 111 is released. At this time, the locking member 111 cooperates with the locking groove 14 to fix the rotating member 11, prevent the rotating member 11 from rotating, and then fix the adjusting member 12 to ensure the accuracy of the injection volume.

In this embodiment, the limiting assembly includes a limiting member 3 and a limiting member 2 31, the limiting member 1 3 is provided with a through hole 1, the limiting member 2 31 is provided with a through hole 2, and the syringe needle 21 Through hole one, and the needle 21 of the syringe is detachably connected to the through hole two, the first stopper 3 is connected to one end of the second stopper 31, and the other end of the second stopper 31 is connected to the needle tube of the syringe. More specifically, the first limiting member 3 is connected to the second limiting member 31 through threads. The limiting part one 3 is provided with a limiting cavity 32, and the diameter of the inner side wall of the limiting cavity 32 decreases step by step from the end where the limiting cavity 32 and the limiting part two 31 are closer to the other end. The second position member 31 is detachably connected, the second limiter 31 is provided with first grooves, at least three first grooves are provided, and the first grooves are arranged in a circular array on the second limiter 31 .

In this embodiment, the adjusting member 12 is provided with a scale. The position of the adjusting member 12 is determined by the scale, so as to ensure the accuracy of the injection amount. The length of the adjustment member 12 is greater than or equal to the length of the needle tube of the syringe. This setting ensures that all the liquid in the syringe is injected. An anti-slip pad is provided on the inner wall of the second through hole, one end of the anti-slip pad is connected with the inner wall of the second through hole, and the other end of the anti-slip pad is connected with the needle 21 of the syringe. This arrangement can ensure that the needle 21 of the syringe, the first stopper 3 and the second stopper 31 do not move relative to each other during injection.

The use method and working principle of the present invention: during specific use, the operator can separate the locking part from the locking slot by pressing the locking part, and at this time turn the rotating part, and the rotating part drives the adjusting part to move and move Under the action of the first limiting hole and the second limiting hole, the adjusting member can only move relative to the fixed part, but cannot rotate relative to it. After the adjusting member moves to a predetermined height, the locking member is released. At this time, the lock The tightening part cooperates with the locking slot to fix the rotating part, prevent the rotating part from rotating, and then fix the adjusting part to ensure the accuracy of the injection volume.

The above descriptions of the embodiments are only for the understanding of the present invention. It should be pointed out that those skilled in the art can make some improvements to the present invention without departing from the principles of the present invention, and these improvements will also fall within the protection scope of the claims of the present invention.

Claims (10)

1. A micro-injector comprises an injector, an adjusting component and a limiting component, and is characterized in that one end of the adjusting component is connected with a needle tube of the injector, the other end of the adjusting component is connected with a piston rod of the injector, one end of the limiting component is connected with the needle tube of the injector, and the other end of the limiting component is connected with a needle head of the injector; the adjusting assembly comprises a fixing part and an adjusting part, one end of the fixing part is connected with the needle tube of the injector, the other end of the fixing part is connected with one end of the adjusting part, and the other end of the adjusting part is connected with the piston rod of the injector.

2. The micro-syringe of claim 1, wherein the adjusting part includes an adjusting member and a rotation member, one end of the rotation member is connected to the fixing part, the other end of the rotation member is connected to one end of the adjusting member, and the other end of the adjusting member is connected to the fixing part.

3. The micro-syringe of claim 2, wherein the adjusting member is provided with a first limiting hole, the fixing member is provided with a second limiting hole, an opening of the first limiting hole is rectangular, a central axis of the opening of the first limiting hole in the length direction is parallel to a central axis of the adjusting member in the length direction, the first limiting hole and the second limiting hole are both provided with at least two holes, the fixing member is movably connected with the first limiting hole, and the adjusting member is movably connected with the second limiting hole.

4. A micro-syringe according to claim 3, wherein the adjustment assembly comprises a locking member having one end connected to the fixed member and the other end connected to the rotational member.

5. The microsyringe of claim 4, wherein the locking means comprises a first locking means and a second locking means, the first locking means and the second locking means being symmetrically disposed about a central axis of the fixation means; the first locking part comprises a locking clamping groove and a locking part, one end of the locking clamping groove is connected with the fixed part, the other end of the locking clamping groove is detachably connected with one end of the locking part, and the other end of the locking part is movably connected with the rotating part; the locking clamping grooves are distributed in a circumferential array along the inner side wall of the fixing part.

6. The micro-injector of claim 5, wherein the rotating member is provided with a first placement groove and a second placement groove, the first placement groove and the second placement groove are symmetrically distributed about the central axis of the fixing member, the locking member is provided with a spring, the locking member is positioned in the first placement groove, one end of the spring is connected with the locking member, and the other end of the spring is connected with the first placement groove; the second locking member is provided with the same structure as the first locking member.

7. The micro-syringe according to any one of claims 1-6, wherein the limiting component comprises a first limiting part and a second limiting part, the first limiting part is provided with a first through hole, the second limiting part is provided with a second through hole, the needle of the syringe penetrates through the first through hole, the needle of the syringe is detachably connected with the second through hole, the first limiting part is connected with one end of the second limiting part, and the other end of the second limiting part is connected with the needle tube of the syringe.

8. The micro-syringe of claim 7, wherein the first limiting part is provided with a limiting cavity, the diameter of the inner side wall of the limiting cavity gradually decreases from one end of the limiting cavity close to the second limiting part to the other end, the limiting cavity is detachably connected with the second limiting part, the second limiting part is provided with at least three first groove bodies, and the first groove bodies are distributed on the second limiting part in a circumferential array manner.

9. The micro-injector of claim 8, wherein the length of the adjustment member is greater than or equal to the length of the syringe barrel of the injector.

10. The micro-syringe according to any one of claims 8 to 9, wherein a non-slip pad is provided on the inner side wall of the second through hole, one end of the non-slip pad is connected with the inner side wall of the second through hole, and the other end of the non-slip pad is connected with the needle of the syringe.

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