Self-destructive syringe

Abstract

The utility model discloses a self-destruction syringe, which comprises a syringe mechanism and an operating mechanism assembled in the syringe mechanism, the syringe mechanism comprises a syringe tube, the bottom of the syringe tube is fixedly provided with a mounting block, the inner side of the mounting block is sleeved with a syringe needle, and the syringe needle is connected with the operating mechanism. Two symmetrically-distributed limiting blocks are fixedly installed on the two sides of the inner wall of the installation block, the operating mechanism comprises a piston rod installed in the syringe in a sliding mode, and a movable seat is installed in the piston rod in a sliding mode. According to the self-destruction syringe, after injection is completed, the needle head can automatically move into the piston rod, the needle head does not need to be manually taken out, the self-destruction effect can be automatically achieved, the situation that the needle head is exposed outside to cause cross infection is avoided, the piston rod and the needle head can be stored in the syringe at the same time, the piston rod does not need to be pulled out, and the size is effectively reduced; the treatment is convenient, and the use effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a self-destructing syringe. Background Technique

[0002] With the continuous development of medical technology, disposable medical devices play an increasingly important role in ensuring medical safety and preventing cross-infection. However, after traditional disposable syringes are used, due to structural reasons, they are likely to be recycled and reused, posing a serious threat to medical safety.

[0003] In the past technological development, although there have been some designs of self-destructing syringes, most of the self-destructing syringes prevent reuse by breaking the piston rod or engaging the piston rod in the syringe barrel. At this time, the needle part still remains outside, and the exposed needle is likely to cause cross-infection. Therefore, the applicant proposes a self-destructing syringe to solve the above problems. Content of the Utility Model

[0004] The purpose of the utility model is to provide a self-destructing syringe to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: a self-destructing syringe, including a syringe mechanism and an operating mechanism assembled in the syringe mechanism;

[0006] The syringe mechanism includes a syringe barrel, a mounting block is fixedly installed at the bottom of the syringe barrel, a needle is sleeved inside the mounting block, and two symmetrically distributed limiting blocks are fixedly installed on both sides of the inner wall of the mounting block;

[0007] The operating mechanism includes a piston rod slidably installed in the syringe barrel, a moving seat is slidably installed inside the piston rod, two deformation arms corresponding to the limiting blocks and symmetrically distributed are fixedly installed at the bottom of the moving seat, a clamping block is fixedly installed inside the two deformation arms, a fixing plate penetrating the piston rod is fixedly installed inside the syringe barrel, and a tension spring is fixedly connected between the fixing plate and the moving seat.

[0008] Preferably, scale lines are engraved on the front surface of the syringe barrel, and convex blocks are fixedly installed on both sides of the syringe barrel.

[0009] Preferably, a piston block is fixedly installed on the outer side of the piston rod, and moving grooves for the fixing plate to slide are opened at the front end and the rear end of the piston rod.

[0010] Preferably, two symmetrically distributed sliders are fixedly installed on the top of the moving seat, and the sliders are located on both sides of the tension spring.

[0011] Preferably, a plug column corresponding to the needle is fixedly installed at the bottom of the movable seat, and a clamping block engaged with the piston rod is fixedly installed on the outer side of the deformation arm.

[0012] Preferably, a clamping groove is formed inside the clamping block, and a clamping ring matched with the clamping groove is fixedly installed on the outer side of the needle.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] This self-destructing syringe can perform normal injection operations by pressing the piston rod. After the injection is completed, the deformation arm can be deformed and closed inward by the blocking effect of the limiting block, so that the clamping block can clamp the needle. At the same time, the movable seat can be pulled upward by the pulling force of the tension spring on the movable seat. At this time, the clamping block can drive the needle to move upward synchronously, so that the needle can automatically move into the piston rod, and there is no need to manually remove the needle, and the self-destruction effect can be automatically realized. It can avoid the situation of cross-infection caused by the exposed needle after the injection is completed. The piston rod and the needle can be retained in the syringe at the same time, and there is no need to pull out the piston rod, which effectively reduces the volume, is convenient for treatment, and improves the use effect. Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0017] Figure 2 It is a schematic cross-sectional structure diagram of the syringe barrel of the present utility model;

[0018] Figure 3 It is a schematic cross-sectional structure diagram of the operating mechanism of the present utility model;

[0019] Figure 4 It is a schematic cross-sectional structure diagram of the use state of the present utility model;

[0020] Figure 5 It is a schematic cross-sectional structure diagram of the self-destruction state of the present utility model;

[0021] Figure 6 It is a schematic diagram of the structure of the movable seat of the present utility model.

[0022] In the figure: 1. Operating mechanism; 101. Piston rod; 102. Moving groove; 103. Piston block; 2. Syringe mechanism; 201. Syringe barrel; 202. Scale line; 203. Mounting block; 204. Needle; 205. Limiting block; 206. Fixed plate; 207. Convex block; 208. Snap ring; 3. Moving seat; 301. Deformable arm; 302. Plug column; 303. Clamping block; 304. Snap block; 305. Tension spring; 306. Slide block; 307. Card slot. Detailed implementation manners

[0023] The following embodiments will describe the present utility model in detail with reference to the accompanying drawings. In the drawings or descriptions, similar or identical parts are denoted by the same reference numerals, and in actual applications, the shapes, thicknesses or heights of the components may be enlarged or reduced. The embodiments listed in the present utility model are only used to illustrate the present utility model and are not intended to limit the scope of the present utility model. Any obvious modification or change made to the present utility model does not depart from the spirit and scope of the present utility model.

[0024] Please refer to Figure 1-6 As shown, a self-destructing syringe proposed by the present utility model includes a syringe mechanism 2 and an operating mechanism 1 assembled in the syringe mechanism 2. The syringe mechanism 2 includes a syringe barrel 201. A mounting block 203 is fixedly installed at the bottom of the syringe barrel 201. A needle 204 is sleeved inside the mounting block 203. Two symmetrically distributed limiting blocks 205 are fixedly installed on both sides of the inner wall of the mounting block 203. The operating mechanism 1 includes a piston rod 101 slidably installed in the syringe barrel 201. A moving seat 3 is slidably installed inside the piston rod 101. Two deformable arms 301 corresponding to the limiting blocks 205 and symmetrically distributed are fixedly installed at the bottom of the moving seat 3. A clamping block 303 is fixedly installed inside the two deformable arms 301. A fixed plate 206 penetrating the piston rod 101 is fixedly installed inside the syringe barrel 201. A tension spring 305 is fixedly connected between the fixed plate 206 and the moving seat 3.

[0025] Based on the above structural settings, this self-destructing syringe is composed of a syringe mechanism 2 and an operating mechanism 1. Among them, by pulling the operating mechanism 1 upward, the liquid medicine can be sucked into the syringe mechanism 2. By pressing the operating mechanism 1, the normal injection operation can be conveniently carried out. When the operating mechanism 1 is pressed to the maximum position, the injection operation can be completed, and at the same time, the self-destruction effect can be started. Specifically, during the working process, by pulling the piston rod 101 upward, it is convenient to suck the liquid medicine into the syringe barrel 201 through the needle 204. By pressing the piston rod 101 downward, it is convenient to extrude the liquid medicine in the syringe barrel 201 from the needle 204, facilitating the normal injection operation. When the piston rod 101 is pressed to the maximum stroke, the injection operation can be completed. The moving seat 3 can move downward synchronously with the piston rod 101, stretching the tension spring 305, and at the same time, the deformation arm 301 can extend into the mounting block 203. Through the blocking effect of the limit block 205 on the deformation arm 301, the deformation arm 301 can be deformed and closed inward. Through the closing deformation of the deformation arm 301, the clamping block can clamp the needle 204. When the deformation arm 301 is closed, the locking effect between the deformation arm 301 and the piston rod 101 is lost. Through the pulling force applied by the tension spring 305 on the moving seat 3, the moving seat 3 can move upward, and at the same time, the needle 204 can be pulled upward synchronously, enabling the needle 204 to be automatically drawn into the piston rod 101 when the injection is completed, making the needle 204 unable to be extended, achieving the self-destruction effect. At the same time, the piston rod 101 remains in the syringe barrel 201 without being pulled out, effectively reducing the volume and facilitating the handling by the staff.

[0026] Furthermore, scale lines 202 are engraved on the front surface of the syringe barrel 201, and convex blocks 207 are fixedly installed on both sides of the syringe barrel 201. Among them, through the scale lines 202, it is convenient to understand the amount of liquid medicine entering the syringe barrel 201. Through the convex blocks 207, the hand can be limited during injection, facilitating the injection operation.

[0027] Furthermore, a piston block 103 is fixedly installed on the outer side of the piston rod 101, and moving grooves 102 for the sliding of the fixing plate 206 are provided at the front and rear ends of the piston rod 101. Among them, when the piston rod 101 moves up and down, it can drive the piston block 103 to move in the syringe barrel 201, facilitating the sucking of the liquid medicine into the syringe barrel 201 and the pushing out of the liquid medicine. Through the moving grooves 102, when the piston rod 101 moves up and down, the fixing plate 206 can slide up and down without affecting the up and down movement operation of the piston rod 101.

[0028] Furthermore, two symmetrically distributed sliders 306 are fixedly installed on the top of the moving seat 3, and the sliders 306 are located on both sides of the tension spring 305. Among them, the moving seat 3 can slide stably in the piston rod 101 through the sliders 306, avoiding the situation of the moving seat 3 being skewed.

[0029] Furthermore, a plug column 302 corresponding to the needle 204 is fixedly installed at the bottom of the moving seat 3, and a clamping block 304 engaged with the piston rod 101 is fixedly installed on the outer side of the deformation arm 301. Among them, when the piston rod 101 moves downward to the maximum stroke, the plug column 302 can extend into the needle 204 for engagement, and the liquid medicine in the needle 204 can be completely extruded. At the same time, the clamping block 303 can be used to stably clamp the needle 204, avoiding the situation of the needle 204 being skewed and falling off. Through the clamping block 304, it can be engaged with the bottom of the piston rod 101. When the deformation arm 301 is deformed, it can block the upward movement of the moving seat 3 to trigger the self-destruction function. When the deformation arm 301 folds inward and deforms, the clamping block 304 can be separated from the piston rod 101, releasing the locking effect with the piston rod 101, enabling the moving seat 3 to move into the piston rod 101. At the same time, the clamping block 304 can abut against the inner wall of the piston rod 101 and slide upward, enabling the deformation arm 301 to maintain the deformation effect and enabling the clamping block 303 to maintain the clamping effect on the needle 204.

[0030] Furthermore, a card slot 307 is formed on the inner side of the clamping block 303, and a clamping ring 208 matched with the card slot 307 is fixedly installed on the outer side of the needle 204. Among them, when the clamping block 303 clamps the needle 204, the clamping ring 208 can extend into the card slot 307, enabling the clamping block 303 to limit the position of the needle 204, facilitating the extraction of the needle 204 and its movement into the piston rod 101, and effectively avoiding the situation of the needle 204 falling off.

[0031] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present utility model, the present utility model can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be encompassed within the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0032] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A self-destructive syringe, characterized in that: It comprises an injector mechanism (2) and an operating mechanism (1) assembled in the injector mechanism (2); The syringe mechanism (2) comprises a syringe barrel (201), a mounting block (203) is fixedly mounted on the bottom of the syringe barrel (201), a needle (204) is sleeved on the inner side of the mounting block (203), and two symmetrically distributed limit blocks (205) are fixedly mounted on both sides of the inner wall of the mounting block (203); The operating mechanism (1) comprises a piston rod (101) slidably mounted in an injection cylinder (201); a movable seat (3) is slidably mounted inside the piston rod (101); two deformable arms (301) corresponding to the limit blocks (205) and symmetrically distributed are fixedly mounted at the bottom of the movable seat (3); clamping blocks (303) are fixedly mounted on the inner sides of the two deformable arms (301); a fixed plate (206) penetrating the piston rod (101) is fixedly mounted inside the injection cylinder (201); and a tension spring (305) is fixedly connected between the fixed plate (206) and the movable seat (3).

2. A self-destructive syringe according to claim 1, characterized in that: The front end surface of the injection barrel (201) is engraved with scale lines (202), and bumps (207) are fixedly mounted on both sides of the injection barrel (201).

3. A self-destructive syringe according to claim 1, characterized in that: A piston block (103) is fixedly mounted on the outer side of the piston rod (101), and movable grooves (102) for sliding of a fixed plate (206) are provided at the front and rear ends of the piston rod (101).

4. A self-destructive syringe according to claim 1, characterized in that: Two symmetrically distributed sliding blocks (306) are fixedly mounted on the top of the movable seat (3), and the sliding blocks (306) are located on both sides of the tension spring (305).

5. A self-destructive syringe according to claim 1, characterized in that: A plug column (302) corresponding to the needle (204) is fixedly mounted on the bottom of the movable seat (3), and a clamping block (304) engaged with the piston rod (101) is fixedly mounted on the outer side of the deformable arm (301).

6. A self-destructive syringe according to claim 1, characterized in that: A clamping groove (307) is provided on the inner side of the clamping block (303), and a clamping ring (208) for use with the clamping groove (307) is fixedly mounted on the outer side of the needle head (204).

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