Quantitative injector

Abstract

The utility model discloses a quantitative syringe, which relates to the technical field of syringes and comprises a syringe shell, a push handle is fixedly arranged on the syringe shell, a rubber piston is slidably connected in the syringe shell, a fixing block is embedded in the rubber piston, a long handle is connected onto the fixing block, and the long handle is connected onto the syringe shell. The long handle penetrates through the push handle and is movably arranged, and a plurality of clamping grooves are formed in one side of the long handle; a buckle assembly is arranged at the bottom of the mounting block and comprises the mounting block, a limiting column and a first spring. By arranging the limiting column and the clamping groove, the medicine amount during single-time injection can be accurately controlled, deviation of the medicine amount is avoided, the clamping column is arranged, the long handle can be clamped, accidents caused by mistaken touch are avoided, the long handle can be replaced, and then the injection requirements of different unit medicine amounts are met.

Description

Technical Field

[0001] This utility model relates to the field of syringe technology, specifically to a quantitative syringe. Background Technology

[0002] A syringe is a commonly used medical device, mainly composed of three parts: a syringe barrel, a plunger, and a needle. The syringe barrel contains the liquid medication to be injected, and the plunger propels the medication through the needle into the body. The primary function of a syringe is to administer medication, ensuring that the drug enters the bloodstream or other specific tissues rapidly and accurately, achieving the purpose of rapid treatment or diagnosis. In short, the syringe is an indispensable tool in modern medicine and plays a vital role in the diagnosis and treatment of diseases.

[0003] In existing syringe technology, the operation of the syringe relies primarily on the visual judgment of medical personnel to control the amount of medication injected. However, due to factors such as differences in perspective and difficulty in precisely controlling the force applied, this traditional method often makes it difficult for medical personnel to accurately control the amount of medication injected. This inaccuracy may not only lead to deviations in drug dosage but may also further affect the treatment effect and even pose potential risks to the patient's health. Utility Model Content

[0004] The purpose of this invention is to provide a novel quantitative syringe that avoids accidents caused by accidental contact and allows for the replacement of the long handle to accommodate different dosages of medication.

[0005] To achieve the above-mentioned objectives, this utility model provides the following technical solution:

[0006] A quantitative syringe includes a syringe housing, a push handle fixedly mounted on the syringe housing, a rubber piston slidably connected inside the syringe housing, a fixing block embedded inside the rubber piston, a long handle connected to the fixing block, the long handle being movably mounted through the push handle, and a plurality of slots provided on one side of the long handle.

[0007] The bottom of the push handle is provided with a buckle assembly, which includes a mounting block, a limiting post and a first spring. The mounting block is fixedly installed at the bottom of the push handle, and a sliding groove is provided on one side of the mounting block. The limiting post is slidably installed in the sliding groove, and the two ends of the first spring are respectively fixedly installed at the bottom of the sliding groove and the inner side of the limiting post.

[0008] As a preferred technical solution of this application, the push handle is provided with a cross hole and a circular hole, the cross hole and the circular hole are arranged overlappingly, and the long handle is movably arranged through the cross hole and the circular hole.

[0009] As a preferred technical scheme of the present application, the top of the long handle is fixedly provided with a push-pull plate, and the outer wall of the syringe shell is provided with a scale value.

[0010] As a preferred technical scheme of the present application, the outer end of the limiting column is provided in a semispherical shape, the clamping groove is provided in a shape smaller than the semispherical shape, and the limiting column is clamped into the clamping groove.

[0011] As a preferred technical scheme of the present application, the syringe shell is provided with a clamping column, the clamping column is slidingly arranged through the mounting block, the limiting column and the syringe shell, the clamping groove is provided with a clamping hole, and the clamping column is clamped into the clamping hole.

[0012] As a preferred technical scheme of the present application, the clamping column is fixedly provided with a limiting plate, one side of the limiting plate is fixedly provided with a second spring, and the other end of the second spring is fixedly arranged on one side of the mounting block.

[0013] As a preferred technical scheme of the present application, the outer side of the clamping column is fixedly provided with a movable plate, and the movable plate is arranged in an inclined manner.

[0014] As a preferred technical scheme of the present application, the bottom of the long handle is fixedly provided with a round rod, the bottom of the round rod is fixedly provided with a clamping plate, and both ends of the clamping plate are provided with positioning holes.

[0015] As a preferred technical scheme of the present application, the fixing block is provided with two fan-shaped cavities, the two fan-shaped cavities are communicatively arranged, a through hole is provided through the fixing block, and the through hole penetrates the top of the fan-shaped cavities.

[0016] As a preferred technical scheme of the present application, the bottom of each of the two fan-shaped cavities is fixedly provided with a clamping ball, the clamping ball is clamped into the positioning hole, and the clamping ball is provided in a semispherical shape.

[0017] Compared with the prior art, the present application has the following beneficial effects:

[0018] The long handle and the buckle assembly are arranged with equidistant clamping grooves, when the long handle moves, the clamping groove pushes the limiting column into the sliding groove, when the next clamping groove moves to be aligned with the limiting column, the limiting column can be clamped into the clamping groove, thereby completing the injection of a unit of drug, and the cycle is repeated, so that the amount of drug injected at a time can be controlled.

[0019] The clamping column and the movable plate are arranged, the clamping column is pulled outward by the movable plate and separated from the clamping hole, at this time, the long handle can be pushed and pulled, after the movable plate is released, the clamping column can be clamped into the corresponding clamping hole, the clamping column is clamped, and accidents caused by accidental touch are avoided.

[0020] The long handle is provided with a clamping plate and clamping balls, the long handle is replaced by rotating the clamping plate counterclockwise to separate the two positioning holes from the two clamping balls, inserting the clamping plate into the fan-shaped cavity, and rotating the long handle clockwise to clamp the two positioning holes on the corresponding clamping balls, thereby positioning the long handle, and the long handle with different clamping slot distances is replaced, thereby meeting the needs of different required unit dosages. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a perspective view of the utility model;

[0022] Figure 2 It is a sectional view of the utility model;

[0023] Figure 3 It is a perspective view of the utility model;

[0024] Figure 4 It is a sectional view of the utility model;

[0025] Figure 5 It is a perspective view of the utility model;

[0026] Figure 6 It is a sectional view of the utility model.

[0027] Indicated in the figure: 1, syringe shell; 11, scale value; 2, push handle; 21, cross hole; 22, circular hole; 3, rubber piston; 31, fixed block; 32, through hole; 33, fan-shaped cavity; 34, clamping ball; 4, long handle; 41, push-pull plate; 42, clamping slot; 43, clamping hole; 44, round rod; 45, clamping plate; 46, positioning hole; 5, mounting block; 51, sliding groove; 52, limiting column; 53, first spring; 6, clamping column; 61, limiting plate; 62, second spring; 63, movable plate. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments.

[0029] Therefore, the following detailed description of the embodiments of the utility model is not intended to limit the scope of the claimed utility model, but only represents some embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0030] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0031] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Example 1

[0032] See Figures 1-5 As shown, this embodiment provides a quantitative syringe.

[0033] A quantitative syringe includes a syringe housing 1. The outer wall of the syringe housing 1 has graduations 11 for medical personnel to observe the amount of medication drawn. A push handle 2 is fixedly mounted on the syringe housing 1 for medical personnel to grip. The push handle 2 has a cross-shaped hole 21 and a circular hole 22 extending through it. The cross-shaped hole 21 and the circular hole 22 are as follows: Figure 3 As shown in the overlapping arrangement, a rubber piston 3 is slidably connected inside the syringe housing 1. The rubber piston 3 is tightly and sealed against the inner wall of the syringe housing 1. A fixing block 31 is embedded in the rubber piston 3. A long handle 4 is connected to the fixing block 31. The long handle 4 is movably connected through the push handle 2 and through the cross hole 21 and the circular hole 22, so that the long handle 4 can move up and down. A push-pull plate 41 is fixedly installed on the top of the long handle 4. The push-pull plate 41 is used by medical staff to push and pull the long handle 4. Several slots 42 are provided on one side of the long handle 4. The slots 42 are linearly and evenly distributed and are smaller than a hemisphere.

[0034] The bottom of the push handle 2 is provided with a buckle assembly, which includes a mounting block 5, a limiting post 52 and a first spring 53. The mounting block 5 is fixedly set at the bottom of the push handle 2. A sliding groove 51 is provided on one side of the mounting block 5. The limiting post 52 is slidably set in the sliding groove 51. The outer end of the limiting post 52 is set in a hemispherical shape. The limiting post 52 is set into the buckle groove 42. At the same time, the buckle groove 42 presses the spherical surface of the outer end of the limiting post 52, which can push the limiting post 52 into the sliding groove 51. The two ends of the first spring 53 are respectively fixedly set at the bottom of the sliding groove 51 and the inner side of the limiting post 52.

[0035] In use, the medical staff extrudes the long handle 4 through the push-pull plate 41, that is, drives the rubber piston 3 through the fixed block 31 to move to extrude the medicine for injection. At the same time, the limiting column 52 is clamped in the corresponding clamping groove 42, when the long handle 4 moves, the clamping groove 42 extrudes the spherical surface of the limiting column 52, pushes the limiting column 52 into the sliding groove 51, and extrudes the first spring 53. When the next clamping groove 42 moves to align with the limiting column 52, the limiting column 52 is reset under the action of the first spring 53 and clamped into the clamping groove 42, that is, a unit of medicine injection is completed, and the cycle is repeated, so that the amount of medicine for single injection can be controlled. Embodiment 2

[0036] Referring to Figures 4-5 Compared with the first embodiment, the difference of the present embodiment is that the injector housing 1 is provided with a clamping column 6, the clamping column 6 is slidably arranged through the mounting block 51, the limiting column 52 and the injector housing 1, the clamping groove 42 is provided with a clamping hole 43, the clamping column 6 is arranged in the clamping hole 43, the outer side of the clamping column 6 is fixedly provided with a movable plate 63, the movable plate 63 is arranged obliquely, and the obliquely arranged movable plate 63 can facilitate the medical staff to insert fingers into the inner side of the movable plate 63, and then facilitate the movable plate 63 to be pulled outward.

[0037] The clamping column 6 is fixedly provided with a limiting plate 61, the limiting plate 61 plays a limiting role with the clamping column 6, one side of the limiting plate 61 is fixedly provided with a second spring 62, and the other end of the second spring 62 is fixedly arranged on one side of the mounting block 5.

[0038] In use, the medical staff inserts fingers into the inner side of the movable plate 63, and at the same time extrudes and pushes the movable plate 63 outward, thereby driving the clamping column 6 to move outward and separate from the clamping hole 43. At this time, the medical staff can push and pull the long handle 4.

[0039] When the single injection is completed, and the medical staff takes out the fingers and separates from the movable plate 63, the clamping column 6 is reset under the action of the second spring 62 and clamped into the corresponding clamping hole 43, so that the long handle 4 can be clamped out, avoiding the movement of the long handle 4, thereby avoiding the occurrence of accidents due to accidental touch. Embodiment 3

[0040] Referring to Figures 4-6 Compared with the first embodiment, the difference of the present embodiment is that the bottom of the long handle 4 is fixedly provided with a round rod 44, the diameter of the round rod 44 is smaller than the circular hole 22, so that the round rod 44 can pass through the circular hole 22, the bottom of the round rod 44 is fixedly provided with a clamping plate 45, the width of the clamping plate 45 is relatively narrow, and the clamping plate 45 can pass through the cross hole 21, both ends of the clamping plate 45 are provided with a positioning hole 46, and the diameter of the positioning hole 46 is smaller than the clamping ball 34.

[0041] Two fan-shaped cavities 33 are arranged in the fixed block 31 and are communicated as shown Figure 6 A through hole 32 is arranged on the fixed block 31 and penetrates the top of the fan-shaped cavities 33, and the through hole 32 is used for passing the clamping plate 45.

[0042] The bottom of each of the two fan-shaped cavities 33 is fixedly provided with a clamping ball 34, the clamping ball 34 is arranged in the positioning hole 46, and the clamping ball 34 is arranged in a semispherical shape.

[0043] In use, the long handle 4 is pulled upwards, so that the round rod 44 is in the circular hole 22, then the clamping plate 45 is counterclockwise rotated through the long handle 4, so that the two positioning holes 46 are separated from the two clamping balls 34 (the rubber piston 3 and the inner wall of the syringe shell 1 have a certain friction force, which is sufficient to separate the positioning hole 46 from the clamping ball 34), then the clamping plate 45 is taken out through the through hole 32, and the long handle 4 can be taken off for replacement.

[0044] The clamping plate 45 is inserted into the fan-shaped cavity 33 through the through hole 32, and the long handle 4 is clockwise rotated, so that the two positioning holes 46 are clamped on the corresponding clamping balls 34, and the long handle 4 is positioned, so that the long handle 4 with different distances between the clamping grooves 42 is replaced, and the needs of different required unit drug amounts are met.

[0045] In the description of the utility model, it should be explained that the terms "upper", "lower" and the like indicate the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the utility model product is used, or the orientation or positional relationship commonly understood by those skilled in the art, and such terms are only used for the convenience of describing the utility model and simplifying the description, and are not used to indicate or imply that the indicated device or element must have a specific orientation, structure and operation, so it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" and the like are only used for differentiation, and cannot be understood as indicating or implying relative importance.

[0046] The above embodiments are only used to illustrate the utility model and are not limited to the technical solutions described in the utility model. Although the utility model has been described in detail with reference to the above embodiments, the utility model is not limited to the above specific embodiments, and any modification or equivalent replacement of the utility model; all technical solutions and improvements within the spirit and scope of the utility model are covered in the scope of the claims of the utility model.

Claims

1. A quantitative syringe, characterized in that: The syringe includes a syringe housing (1), a push handle (2) is fixedly mounted on the syringe housing (1), a rubber piston (3) is slidably connected inside the syringe housing (1), a fixing block (31) is embedded inside the rubber piston (3), a long handle (4) is connected to the fixing block (31), the long handle (4) is movably mounted through the push handle (2), and a number of slots (42) are provided on one side of the long handle (4). The bottom of the push handle (2) is provided with a buckle assembly, which includes a mounting block (5), a limiting post (52) and a first spring (53). The mounting block (5) is fixedly installed at the bottom of the push handle (2). A sliding groove (51) is provided on one side of the mounting block (5). The limiting post (52) is slidably installed in the sliding groove (51). The two ends of the first spring (53) are respectively fixedly installed at the bottom of the sliding groove (51) and the inner side of the limiting post (52).

2. The quantitative syringe as described in claim 1, characterized in that: The push handle (2) is provided with a cross hole (21) and a circular hole (22) through it. The cross hole (21) and the circular hole (22) are arranged in an overlapping manner. The long handle (4) is movably arranged through the cross hole (21) and the circular hole (22).

3. The quantitative syringe as described in claim 1, characterized in that: A push-pull plate (41) is fixedly provided on the top of the long handle (4), and a scale value (11) is provided on the outer wall of the syringe housing (1).

4. The quantitative syringe as described in claim 2, characterized in that: The outer end of the limiting post (52) is hemispherical, the slot (42) is smaller than hemispherical, and the limiting post (52) is inserted into the slot (42).

5. The quantitative syringe as described in claim 2, characterized in that: The syringe housing (1) is provided with a locking post (6), which slides through the mounting block (5), the limiting post (52) and the syringe housing (1). The slot (42) is provided with a locking hole (43), and the locking post (6) is inserted into the locking hole (43).

6. The quantitative syringe as described in claim 5, characterized in that: A limiting plate (61) is fixedly installed on the locking post (6), and a second spring (62) is fixedly installed on one side of the limiting plate (61), and the other end of the second spring (62) is fixedly installed on one side of the mounting block (5).

7. The quantitative syringe as described in claim 5, characterized in that: A movable plate (63) is fixedly installed on the outside of the locking post (6), and the movable plate (63) is inclined.

8. The quantitative syringe as described in claim 1, characterized in that: A round rod (44) is fixedly provided at the bottom of the long handle (4), and a clamping plate (45) is fixedly provided at the bottom of the round rod (44). Positioning holes (46) are provided through both ends of the clamping plate (45).

9. The quantitative syringe as described in claim 8, characterized in that: The fixing block (31) is provided with two sector-shaped cavities (33), which are connected. The fixing block (31) is provided with a through hole (32), which passes through the top of the sector-shaped cavity (33). The card plate (45) is configured to cooperate with the sector-shaped cavity (33).

10. The quantitative syringe as described in claim 9, characterized in that: Both of the two sector cavities (33) are fixedly provided with a retaining ball (34) at the bottom. The retaining ball (34) is inserted into the positioning hole (46) and is hemispherical.

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