CN219271604U - Improved disposable sterile injector - Google Patents

Abstract

The utility model discloses an improved disposable sterile injector, which comprises: the needle is arranged at the center of the left side of the needle cylinder. When the syringe is used, the handle is pulled outwards, the clamping block is separated from the clamping groove, the needle is inserted into the liquid medicine, the push rod is pulled outwards, the piston can be driven to move to one side far away from the needle, during injection, the push rod is pushed to one side close to the needle, the piston can be driven to move to the limit position to one side close to the needle, the liquid medicine is injected into a patient, then a user shears a plastic rope exposing the push rod, the handle is taken down, the clamping block is inserted into the clamping groove under the elastic force of the sleeve spring, the piston is limited, the piston can not move in the syringe through the steps, the syringe can be prevented from being reused, and cross infection is avoided.

Description

Improved disposable sterile injector

Technical Field

The utility model relates to the technical field of syringes, in particular to an improved disposable sterile syringe.

Background

Syringes are a common medical device. Mainly for injecting or drawing medical fluids, the injector can also be used for injecting medical equipment, containers, such as scientific instruments in chromatography, through rubber diaphragms. Injection of gas into the blood vessel will result in air embolism. Air is removed from the syringe to avoid embolism by inverting the syringe, gently tapping, and then squeezing out a bit of liquid prior to injection into the blood stream.

However, there are some disadvantages to the current disposable sterile syringe, such as the patent with application number CN202022699422.6, the present utility model discloses a disposable sterile syringe, and in particular relates to the field of medical instruments, including a syringe barrel, a push rod and a needle, where two fixing plates are disposed on the outer surface of the syringe barrel, the two fixing plates are symmetrically disposed about the central axis of the syringe barrel, and a quantitative extraction assembly is disposed inside the fixing plates. According to the utility model, the fixed block is moved according to the actual extraction amount, and meanwhile, the extraction amount is determined by comparing the readings of the fixed block on the graduated scale, and the sliding block is driven to move in the chute along with the drawing of the push rod when the extraction is performed, so that when the sliding block is attached to the fixed block, medical staff can intuitively know that the extraction amount reaches the standard, and thus the liquid storage assembly is convenient for the medical staff to use.

However, the above patent suffers from the following drawbacks: the disposable sterile syringe of the above patent can be repeatedly used without being manually destroyed after use, and when the disposable syringe is used again, the risk of infection is easily caused.

Disclosure of Invention

The present utility model is directed to an improved disposable sterile syringe that solves the above-mentioned problems of the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: an improved single use sterile syringe comprising:

a needle cylinder;

a needle disposed at the left center of the barrel;

the piston is connected to the left side of the inside of the needle cylinder in a sliding way, a push rod is fixedly connected to the center of the right side of the piston, and the right end of the push rod penetrates through the needle cylinder and extends to the outside of the needle cylinder;

the clamping groove is formed in the top of the inner wall of the needle cylinder and positioned on the right side of the piston;

the first through hole is formed in the position, corresponding to the clamping groove, of the top of the push rod;

the right side of the push rod is provided with a second through hole;

and the left side of the top of the push rod is provided with a limiting mechanism.

Further, stop gear includes dead lever, diaphragm, baffle, connecting rod, connecting plate, fixture block, cover spring, plastic rope, handle and leading wheel, the left side fixedly connected with at push rod top two dead levers, the top and the diaphragm fixed connection of dead lever, the bottom center department swing joint of diaphragm has the baffle, the connecting rod that two symmetries of top fixedly connected with of baffle set up, the one end and the connecting plate fixed link to each other that the baffle was kept away from to the connecting rod, the inside movable joint of draw-in groove has the fixture block, the surface cover of connecting rod is equipped with the cover spring, the bottom fixedly connected with plastic rope of baffle, the one end that the baffle was kept away from to the plastic rope passes first through-hole and second through-hole in proper order and extends to the inside of second through-hole, the right side swing joint of push rod has the handle, the right side fixedly connected with leading wheel that push rod inner wall top just is located first through-hole.

Further, the surface of the connecting plate is in movable contact with the inner wall of the needle cylinder.

Further, the connecting rod is connected with the transverse plate in a sliding manner.

Further, the clamping blocks are fixedly connected with the connecting plates.

Further, the guide wheel is movably connected with the plastic rope.

Further, the handle is fixedly connected with the plastic rope.

Compared with the prior art, the utility model has the following beneficial effects:

when the medical injector is used, the handle is pulled outwards, the plastic rope, the baffle, the connecting rod, the connecting plate and the clamping block are driven to move to the side far away from the clamping groove, the sleeve spring is compressed, the clamping block is further separated from the clamping groove, then the needle head is inserted into medical liquid, the push rod is pulled outwards, the piston can be driven to move to the side far away from the needle head, the medical liquid is further pumped into the needle cylinder, when the medical liquid is injected, the push rod is pushed to the side close to the needle head, the piston can be driven to move to the limit position to inject the medical liquid into a patient, then the user shears the plastic rope exposing the push rod, the handle is removed, then the connecting plate, the clamping block, the connecting rod and the baffle are driven to perform reset movement under the elastic force of the sleeve spring, the clamping block is further inserted into the clamping groove, and the piston is limited.

Drawings

FIG. 1 is a cross-sectional view of an elevation structure of the present utility model;

FIG. 2 is an enlarged schematic view of FIG. 1A according to the present utility model;

FIG. 3 is an enlarged schematic view of the B of FIG. 1 in accordance with the present utility model;

fig. 4 is a schematic elevational view of the present utility model.

In the figure: 1. a needle cylinder; 2. a needle; 3. a piston; 4. a push rod; 5. a clamping groove; 6. a first through hole; 7. a second through hole; 8. a limiting mechanism; 81. a fixed rod; 82. a cross plate; 83. a baffle; 84. a connecting rod; 85. a connecting plate; 86. a clamping block; 87. sleeving a spring; 88. a plastic rope; 89. a handle; 810. and a guide wheel.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, an improved disposable sterile syringe, comprising: needle cylinder 1, syringe needle 2, piston 3, push rod 4, draw-in groove 5, first through-hole 6, second through-hole 7 and stop gear 8, needle 2 sets up in the left side center department of needle cylinder 1, piston 3 sliding connection is in the inside left side of needle cylinder 1, the center department fixedly connected with push rod 4 on piston 3 right side, the right-hand member of push rod 4 runs through needle cylinder 1 and extends to the outside of needle cylinder 1, draw-in groove 5 has been seted up on needle cylinder 1 inner wall top and is located the right side of piston 3, first through-hole 6 has been seted up at the position that the draw-in groove 5 corresponds at push rod 4 top, second through-hole 7 has been seted up on the right side of push rod 4, the top left side of push rod 4 is provided with stop gear 8.

When the device is specifically implemented, the limiting mechanism 8 comprises a fixed rod 81, a transverse plate 82, a baffle 83, a connecting rod 84, a connecting plate 85, a clamping block 86, a sleeve spring 87, a plastic rope 88, a handle 89 and a guide wheel 810, wherein the left side of the top of the push rod 4 is fixedly connected with the two fixed rods 81, the top of the fixed rod 81 is fixedly connected with the transverse plate 82, the center of the bottom of the transverse plate 82 is movably connected with the baffle 83, the top of the baffle 83 is fixedly connected with two symmetrically arranged connecting rods 84, one end of the connecting rod 84, far away from the baffle 83, is fixedly connected with the connecting plate 85, the clamping block 86 is movably clamped inside the clamping groove 5, the surface of the connecting rod 84 is sleeved with the sleeve spring 87, the bottom of the baffle 83 is fixedly connected with the plastic rope 88, one end of the plastic rope 88, far away from the baffle 83, sequentially penetrates through the first through hole 6 and the second through hole 7 and extends to the inside of the second through hole 7, the right side of the push rod 4 is movably connected with the handle 89, and the top of the push rod 4 is positioned at the top of the inner wall of the first through hole 6, and the right side of the first through hole 6 is fixedly connected with the guide wheel 810.

In practice, the surface of the connecting plate 85 is in movable contact with the inner wall of the cylinder 1.

In particular embodiments, the connecting rod 84 is slidably coupled to the cross plate 82.

In a specific implementation, the clamping block 86 is fixedly connected with the connecting plate 85.

In particular embodiments, the guide wheel 810 is movably coupled to the plastic cord 88.

In particular embodiments, the handle 89 is fixedly connected to the plastic cord 88.

Detailed working principle: when the syringe is used, the handle 89 is pulled outwards, the plastic rope 88, the baffle 83, the connecting rod 84, the connecting plate 85 and the clamping block 86 are driven to move to the side far away from the clamping groove 5, the sleeve spring 87 is compressed, the clamping block 86 is separated from the clamping groove 5, then the syringe needle 2 is inserted into liquid medicine, the push rod 4 is pulled outwards, the piston 3 can be driven to move to the side far away from the syringe needle 2, the liquid medicine is pumped into the syringe 1, the push rod 4 is pushed to the side close to the syringe needle 2 during injection, the piston 3 can be driven to move to the limit position to the side close to the syringe needle 2, the liquid medicine is injected into a patient, then the user shears the plastic rope 88 exposing the push rod 4, the handle 89 is removed, the connecting plate 85, the clamping block 86, the connecting rod 84 and the baffle 83 are driven to perform reset motion under the elastic force of the sleeve spring 87, the clamping block 86 is inserted into the clamping groove 5, the piston 3 is limited, and the piston 3 can not move in the syringe 1, so that the syringe can be prevented from being reused, and cross infection is avoided.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. An improved disposable sterile syringe, comprising:

a needle cylinder (1);

a needle (2), wherein the needle (2) is arranged at the left center of the syringe (1);

the piston (3) is connected to the left side of the inside of the needle cylinder (1) in a sliding manner, a push rod (4) is fixedly connected to the center of the right side of the piston (3), and the right end of the push rod (4) penetrates through the needle cylinder (1) and extends to the outside of the needle cylinder (1);

the clamping groove (5) is formed in the top of the inner wall of the needle cylinder (1) and positioned on the right side of the piston (3);

the first through hole (6) is formed in the position, corresponding to the clamping groove (5), of the top of the push rod (4);

the right side of the push rod (4) is provided with a second through hole (7);

stop gear (8), the top left side of push rod (4) is provided with stop gear (8), stop gear (8) include dead lever (81), diaphragm (82), baffle (83), connecting rod (84), connecting plate (85), fixture block (86), cover spring (87), plastics rope (88), handle (89) and leading wheel (810), the left side fixedly connected with two dead levers (81) at push rod (4) top, the top and the diaphragm (82) fixed connection of dead lever (81), the bottom center department swing joint of diaphragm (82) has baffle (83), the top fixedly connected with connecting rod (84) of two symmetry settings of baffle (83), the one end and the connecting plate (85) of baffle (83) are kept away from to connecting rod (84) are fixedly connected, the inside movable joint of draw-in groove (5) has fixture block (86), the surface cover of connecting rod (84) is equipped with cover spring (87), the bottom fixedly connected with plastics rope (88) at baffle (83), the bottom of plastics rope (88) keep away from first through-hole (6) and second through-hole (7) that extend to inside two through-holes (7) of baffle (83) are kept away from to each other, the top of the inner wall of the push rod (4) is fixedly connected with a guide wheel (810) at the right side of the first through hole (6).

2. An improved single use sterile syringe as defined in claim 1, wherein: the surface of the connecting plate (85) is in movable contact with the inner wall of the needle cylinder (1).

3. An improved single use sterile syringe as defined in claim 1, wherein: the connecting rod (84) is in sliding connection with the transverse plate (82).

4. An improved single use sterile syringe as defined in claim 1, wherein: the clamping block (86) is fixedly connected with the connecting plate (85).

5. An improved single use sterile syringe as defined in claim 1, wherein: the guide wheel (810) is movably connected with the plastic rope (88).

6. An improved single use sterile syringe as defined in claim 1, wherein: the handle (89) is fixedly connected with the plastic rope (88).

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