CN209951948U

CN209951948U - Anti-pollution syringe

Info

Publication number: CN209951948U
Application number: CN201920391845.6U
Authority: CN
Inventors: 江雪梅; 刘思言
Original assignee: First Affiliated Hospital of PLA Military Medical University
Current assignee: First Affiliated Hospital of PLA Military Medical University
Priority date: 2019-03-26
Filing date: 2019-03-26
Publication date: 2020-01-17
Anticipated expiration: 2029-03-26

Abstract

The utility model discloses an anti-pollution syringe, including cylinder, syringe needle, piston and piston rod, the one end of keeping away from the piston of piston rod is equipped with the handle, still includes protection device, and the protection device cover is established on the piston rod, and protection device's one end is connected with the handle, states protection device's the other end and is connected with the one end of keeping away from the syringe needle of cylinder, and protection device can stretch out and draw back. The anti-pollution injector can be used for extracting injection liquid medicine under the condition of not contacting with the piston rod, so that the piston rod is protected, and safety and sanitation are improved.

Description

Anti-pollution syringe

Technical Field

The utility model relates to the technical field of medical treatment, concretely relates to anti-pollution syringe.

Background

The syringe is the most common apparatus used in the medical industry, and the liquid medicine is directly injected into the human body through the syringe, so the syringe is required to ensure the sterility and the safety. There are strict operating specifications for syringes to draw liquid medicine: that is, the index finger and the middle finger of one hand hold the medicine ampoule at the same time, the thumb and the ring finger of the same hand hold the syringe barrel, and the other hand is released to hold the piston handle and then pull the medicine (textbook method). The operating method can ensure that the pull rod of the injector is not touched by foreign objects and ensure the safety and the sanitation of the injector, but has the defects of complex action and low working efficiency.

Therefore, in actual work, most medical staff do not strictly draw the liquid medicine according to the standard operation on the textbook. But a more rapid operation method is adopted: the liquid medicine ampoule is held by one hand, the liquid medicine is extracted by holding the syringe by the other hand, specifically, the syringe needle cylinder is clamped by the thumb and the forefinger of the same hand, and then the liquid medicine is extracted by clamping the syringe piston handle backwards by the ring finger.

The medicine pumping method has high efficiency, but the piston pull rod is not tightly protected, the piston pull rod is very easy to touch by hands, so that the piston pull rod becomes a pollution source, and dirt on the piston pull rod can be transferred to the inner wall of the needle cylinder to cause pollution when medicine is injected for the first time. If the same syringe is used for extracting the liquid medicine for the second time, the liquid medicine is polluted, and great danger exists for the safety of the human body.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is to provide an anti-pollution injector which can avoid external pollution when absorbing liquid medicine and injecting liquid medicine, and ensure safety and sanitation.

In order to achieve the above purpose, the present invention is realized by the following technical solution: the utility model provides an anti-pollution syringe, includes cylinder, syringe needle, piston and piston rod, the one end of keeping away from the piston of piston rod is equipped with the handle, still includes protection device, the protection device cover is established on the piston rod, protection device's one end and handle are connected, protection device's the other end and the cylinder keep away from the one end of syringe needle and be connected, protection device can stretch out and draw back.

The telescopic protection device is sleeved on the handle and the needle cylinder, a sealed space can be formed, the piston rod is surrounded in the protection device, and the piston rod is inserted in the protection device in a pulling mode, so that the piston rod can not be polluted by the outside.

The anti-pollution injector has the beneficial effects that: when the liquid medicine is sucked and injected, the hands of the medical staff cannot contact the piston rod, and other external pollution sources cannot contact the piston rod, so that the safety and the sanitation of the injector are ensured, and the working efficiency of the medical staff is also improved.

Further, protection device is the protective sheath, the material of protective sheath is for having elastic medical film, the protective sheath has two openings of keeping away from each other, two openings of protective sheath all are equipped with the rubber band.

The protective sleeve is sleeved on the piston rod, and two ends of the protective sleeve are respectively tied on the handle and the needle cylinder by rubber bands, so that sealing is realized, the operation is simple and convenient, and the cost is low.

Furthermore, the outer wall of one end, far away from the needle head, of the needle cylinder is provided with a groove along the circumferential direction, and the joint of the handle and the piston rod is also provided with a groove along the circumferential direction.

The grooves at the two ends can be used for placing rubber bands, so that the limiting effect is achieved, and the rubber bands can be prevented from falling off.

Further, protection device is the protective housing, the protective housing includes the sleeve and inserts a section of thick bamboo, insert a section of thick bamboo cover and establish on the piston rod, insert a cartridge in the sleeve, the sleeve is connected with cylinder detachably, insert a section of thick bamboo and be connected with handle detachably.

The telescopic cylindrical protective shell formed by the inserting cylinder and the sleeve is sleeved on the piston rod, so that the piston rod is stable and is not easy to break or fall off. Plays a good role in protection and isolation.

Furthermore, the telescopic one end inner wall that is close to and inserts the section of thick bamboo is equipped with the stopper along circumference, insert and be equipped with the lug along circumference on the telescopic one end outer wall of a section of thick bamboo that is close to.

When the inserting cylinder is to slide out of the sleeve, the convex block is in contact with the limiting block, so that the inserting cylinder cannot slide out of the sleeve, and the piston rod can be located in the isolation range of the protective shell all the time.

Furthermore, the outer wall of one end, close to the handle, of the plug barrel is provided with threads, and a plane of the handle, facing the plug barrel, is provided with a thread groove.

The inserting cylinder is inserted along the thread groove and is in threaded connection, so that the inserting cylinder can be fixed on the handle, the connection is firm, and the sealing performance is high.

Drawings

Fig. 1 is a schematic structural diagram of a first embodiment of the present invention;

FIG. 2 is a schematic view of a protective sheath of the present invention;

fig. 3 is a schematic structural view of a second embodiment of the present invention;

fig. 4 is a schematic view of the protective case of the present invention;

reference numerals: 100-syringe, 110-needle, 120-groove, 130-jack, 200-piston rod, 210-piston, 220-handle, 300-protective sleeve, 310-rubber band, 400-protective shell, 410-sleeve, 411-insert, 412-pin, 413-limiting block, 420-insert, 421-thread, 423-lug.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby. In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced components or structures must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be considered as limiting the present invention.

The first implementation mode comprises the following steps:

referring to fig. 1 and 2, the present invention provides an anti-contamination injector, which comprises a syringe 100, a needle 110, a piston 210 and a piston rod 200, wherein the piston 210 is disposed at one end of the piston rod 200 and inserted into the syringe 100, and the piston 210 is slidably connected to the syringe 100. The other end of the piston rod 200 is provided with a grip 220 for pushing and pulling the piston rod 200. The piston rod 200 is sleeved with a protection device, and two ends of the protection device are respectively connected with the grip 220 and the syringe 100, so that the piston rod 200 is surrounded in the protection device, and the pollution can be prevented.

In this embodiment, the protection device is a protection cover 300, the protection cover 300 is made of an elastic medical film, two openings are respectively formed at two ends of the protection cover 300, and rubber bands 310 are respectively arranged at the openings. One of syringe 100 that is close to protective sheath 300 is served and is equipped with recess 120, and recess 120 sets up along the circumference of syringe 100, and grip 220 also is equipped with recess 120 along circumference with piston rod 200 juncture, and recess 120 is used for placing the rubber band 310 at protective sheath 300 both ends, can enough prevent the landing of rubber band 310, avoids protective sheath 300 to drop, also can guarantee that both ends are in encapsulated situation.

The piston rod 200 is inserted along the opening of the protection sleeve 300, the rubber bands 310 at the two ends are placed in the grooves 120, and the opening is tightened under the elastic force of the rubber bands 310, so that the piston rod 200 is in the sealed space. The piston rod 200 is pulled or pressed by the grip 220, and the piston rod 200 can be kept in a closed space all the time due to the elasticity of the protective sleeve 300 along with the elongation or contraction of the piston rod 200, so that the external pollution can be isolated, and the sanitation can be guaranteed.

The second embodiment:

referring to fig. 4, the components and the positions and the connection relationship of the components in the present embodiment are substantially the same as those in the first embodiment, except that the protective device in the present embodiment adopts a protective casing 400, the protective casing 400 includes a sleeve 410 and an insertion tube 420, one end of the insertion tube 420 is detachably connected to the grip 220, the other end of the insertion tube 420 is inserted into the sleeve 410, and the other end of the sleeve 410 is detachably disposed on the syringe 100. The end, close to the sleeve 410, of the inserting cylinder 420 is circumferentially provided with a bump 423, the bump 423 is in sliding connection with the sleeve 410, the end, close to the inserting cylinder 420, of the sleeve 410 is circumferentially provided with a limit block 413, and the direction of the limit block 413 faces the circle center and can block the bump 423.

Specifically, the right end of the insertion tube 420 is provided with a thread 421, and the end surface of the grip 220 facing the insertion tube 420 is provided with a thread groove for connecting with the insertion tube 420. The left end of the sleeve 410 has two insertion blocks 411, the end face of the right end of the syringe 100 is provided with two insertion holes 130 penetrating the end face, and the insertion holes correspond to the insertion blocks 411 in position, so that the insertion blocks 411 can penetrate the insertion holes 130. The insertion block 411 is provided with a circular through hole into which the pin 412 can be inserted.

The working principle of the anti-pollution injector is as follows: when the sealing device is used, the right end of the insertion cylinder 420 is in threaded connection with the grip 220 and is fixed, so that the sealing effect is achieved. The insert 411 at the left end of the sleeve 410 is inserted into the insertion hole 130, so that the sleeve 410 contacts with the end surface of the syringe 100 to achieve the sealing effect, and the pin 412 is inserted into the circular through hole of the insert 411, so that the insert 411 cannot exit from the insertion hole 130, thereby playing a role in fixing.

When the handle 220 is pressed to push the piston rod 200, the sleeve 420 slides leftward in the sleeve 410, and the protective case 400 is shortened. When the piston rod 200 is pulled backward, the insertion cylinder 420 slides rightward in the sleeve 410, the protective case 400 is extended, and the stopper 413 and the projection 423 can prevent the insertion cylinder 420 from falling off. The piston rod 200 is always in the protective case 400, isolating the pollution source.

When the anti-pollution injector is used, medical personnel can not touch the piston rod 200, and when the medical liquid is sucked and injected, the piston rod 200 is always isolated from an external pollution source in the protection device, so that the safety and the sanitation are ensured.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. An anti-pollution injector comprises a needle cylinder, a needle head, a piston and a piston rod, wherein a handle is arranged at one end, far away from the piston, of the piston rod.

2. The anti-pollution injector according to claim 1, characterized in that said protective device is a protective sheath made of an elastic medical film, said protective sheath has two openings far away from each other, and rubber bands are provided at both openings of said protective sheath.

3. The anti-pollution injector according to claim 2, wherein the outer wall of the end of said cylinder away from the needle is provided with a circumferential groove, and the joint of said handle and said piston rod is also provided with a circumferential groove.

4. The anti-pollution injector according to claim 1, wherein said protecting device is a protecting shell, said protecting shell comprises a sleeve and an insert tube, said insert tube is sleeved on the piston rod, said insert tube is inserted in the sleeve, said sleeve is detachably connected with the needle cylinder, said insert tube is detachably connected with the grip.

5. The anti-pollution injector according to claim 4, wherein the inner wall of the sleeve at one end close to the barrel is circumferentially provided with a limiting block, and the outer wall of the barrel at one end close to the sleeve is circumferentially provided with a projection.

6. The anti-pollution injector according to claim 4, wherein the plug barrel has threads on the outer wall of the end near the grip, and the grip has thread grooves on the plane facing the plug barrel.