CN214804912U

CN214804912U - Sampling injector with retractable needle

Info

Publication number: CN214804912U
Application number: CN202121488927.6U
Authority: CN
Inventors: 陈咏敏
Original assignee: HUZHOU CHINESE MEDICINE HOSPITAL
Current assignee: HUZHOU CHINESE MEDICINE HOSPITAL
Priority date: 2021-07-02
Filing date: 2021-07-02
Publication date: 2021-11-23
Anticipated expiration: 2031-07-02

Abstract

The utility model discloses a recoverable sample syringe of syringe needle, concretely relates to sample syringe field, including the cylinder, the cylinder bottom is equipped with the mechanism that returns, return the mechanism including pegging graft the square cylinder in the cylinder bottom, the square cylinder outside is equipped with the turning block, and square cylinder inner chamber is equipped with first piston, it has the syringe needle body to peg graft on the first piston, the syringe needle body runs through square cylinder bottom, the cover is equipped with the thread bush on the syringe needle body, set up threaded hole on the turning block, the cylinder inner chamber is equipped with the second piston, second piston top fixedly connected with montant. The utility model discloses a set up and return mechanism, the screw thread cover drives the syringe needle body and exposes the turning block under the effect of screw hole, pierces the syringe needle body and pierces the pipe and use, and the syringe needle body returns under the combined action of screw thread cover and screw hole and returns inside advancing the turning block, can not need take off the syringe needle after the use, directly takes the censorship with the syringe needle body together with the cylinder.

Description

Sampling injector with retractable needle

Technical Field

The utility model belongs to the technical field of the sampling syringe, especially, relate to a but syringe needle retractable's sampling syringe.

Background

Syringes are common medical devices used for disposable, reuse-proof safety syringes for humans or animals, primarily for drawing or injecting gas or liquid with a needle, but also for medical devices, containers, scientific instruments such as those used in chromatography, for injecting drugs or samples in hospitals.

Get urine culture, drainage liquid and cultivate and need use the syringe clinically, the syringe usually has cylinder and syringe needle two parts to constitute, and current syringe need take off the syringe needle after the sample is ended, consequently has the risk of stabbing and polluting of acupuncture, stabs operating personnel easily, and the security is low, and the practicality is poor, also can pour into other closed container into after the sample certainly and transport, but the operation has sample pollution risk again like this, influences the accuracy that detects.

SUMMERY OF THE UTILITY MODEL

The utility model provides a recoverable sample syringe of syringe needle aims at solving the syringe that above-mentioned existence and need take off the syringe needle after the sample is ended, consequently has the risk that the acupuncture injures and pollutes, the poor problem of practicality.

The utility model discloses a realize like this, the utility model provides a following technical scheme: a sampling injector with a retractable needle comprises a needle cylinder, wherein the bottom of the needle cylinder is provided with a retraction mechanism;

the retraction mechanism comprises a square barrel inserted at the bottom of the needle barrel, a rotating block is arranged on the outer side of the square barrel, a first piston is arranged in an inner cavity of the square barrel, a needle body is inserted on the first piston, the needle body penetrates through the bottom of the square barrel, a threaded sleeve is sleeved on the needle body, a threaded hole is formed in the rotating block, and the threaded sleeve is located in the inner cavity of the threaded hole;

the inner cavity of the needle cylinder is provided with a second piston, the top of the second piston is fixedly connected with a vertical rod, and the top end of the vertical rod penetrates through the top of the needle cylinder and is fixedly connected with a circular plate.

In a preferred embodiment, a first circular ring is sleeved on the needle cylinder close to the top, and scale marks are carved on the needle cylinder.

In a preferred embodiment, a sliding groove is formed in one side of the rotating block, and a sliding plate is slidably connected to an inner cavity of the sliding groove.

In a preferred embodiment, a second circular ring is sleeved on the needle cylinder close to the bottom, a plurality of limiting holes are formed in one side of the second circular ring, a fixing block is fixedly connected to the rotating block, a T-shaped rod is inserted into the fixing block, and one end of the T-shaped rod is inserted into an inner cavity of one of the limiting holes.

In a preferred embodiment, a T-shaped groove is formed at the bottom of the needle cylinder, and a T-shaped ring is fixedly connected to the other side of the rotating block.

In a preferred embodiment, the T-shaped ring is positioned in a cavity of the T-shaped groove, and a plurality of sliding balls are mounted on the side wall of the cavity of the T-shaped groove.

In a preferred embodiment, the first piston has a square shape, and the threaded sleeve is threadedly coupled to the threaded hole.

Compared with the prior art, the beneficial effects of the utility model are that:

1. by arranging the retraction mechanism, the rotating block is rotated clockwise, the thread sleeve on the needle head body is in threaded connection with the threaded hole, the thread sleeve drives the needle head body to expose the rotating block under the action of the threaded hole, the needle head body is penetrated into the catheter cavity for use, after sampling is finished, the rotating block is rotated anticlockwise, the needle body retracts into the rotating block under the combined action of the thread sleeve and the thread hole, compared with the prior art, the sampling injector in the prior art has the risk of falling off the needle head if the sampling injector is connected with the needle head for inspection, and has the risk of sample pollution if the sampling injector is injected into other closed containers, the utility model can directly take the needle body together with the needle cylinder for inspection without taking down the needle after use, thereby avoiding the risk of needle prick when taking down the needle body, having good use effect and avoiding the falling risk of the needle and the sample pollution risk;

2. through setting up spout and slide, slide the slide in the spout, expose the screw hole, be convenient for take out the work of taking a sample with the syringe needle body, reverse slip slide after the sample is ended to make the slide cover the screw hole, compare with prior art, avoided syringe needle body and external air contact effectively when not using, prevent bacterium in the air and syringe needle contact and lead to the inaccurate as a result of detection, improved the accuracy of testing result, the practicality is strong.

Drawings

Fig. 1 is a perspective view of the present invention.

Fig. 2 is a schematic view of the overall structure of the present invention.

Fig. 3 is an enlarged view of a portion a in fig. 2 according to the present invention.

Fig. 4 is a perspective view of the turning block of the present invention.

In the figure: 1. a needle cylinder; 2. a square cylinder; 3. rotating the block; 4. a first piston; 5. a needle body; 6. a threaded sleeve; 7. a second piston; 8. a vertical rod; 9. a circular plate; 10. a first circular ring; 11. a slide plate; 12. a second circular ring; 13. a fixed block; 14. a T-shaped rod; 15. t-shaped rings.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In addition, in the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

A retractable needle sampling syringe as shown in fig. 1-4, comprising a syringe barrel 1, wherein the bottom of the syringe barrel 1 is provided with a retraction mechanism;

the retraction mechanism comprises a square barrel 2 inserted at the bottom of the needle cylinder 1, a rotating block 3 is arranged on the outer side of the square barrel 2, a first piston 4 is arranged in the inner cavity of the square barrel 2, a needle head body 5 is inserted on the first piston 4, the needle head body 5 penetrates through the bottom of the square barrel 2, a threaded sleeve 6 is sleeved on the needle head body 5, a threaded hole is formed in the rotating block 3, and the threaded sleeve 6 is located in the inner cavity of the threaded hole;

the inner cavity of the needle cylinder 1 is provided with a second piston 7, the top of the second piston 7 is fixedly connected with a vertical rod 8, and the top end of the vertical rod 8 penetrates through the top of the needle cylinder 1 and is fixedly connected with a circular plate 9.

As shown in the attached drawing 1, the position of the needle cylinder 1, which is close to the top, is sleeved with a first circular ring 10, scale marks are carved on the needle cylinder 1, the needle cylinder 1 is made of transparent materials, and the quantity of a sample can be observed by an operator under the action of the scale marks.

As shown in the attached drawing 4, the sliding groove is formed in one side of the rotating block 3, the sliding plate 11 is connected to the inner cavity of the sliding groove in a sliding mode, the needle head body 5 is effectively prevented from being in contact with outside air when the needle head is not used, the situation that bacteria in the air are in contact with the needle head body 5 to cause inaccurate detection results is avoided, and the accuracy of the detection results is improved.

As shown in the attached figures 3 and 4, a second circular ring 12 is sleeved at the position, close to the bottom, of the needle cylinder 1, a plurality of limiting holes are formed in one side of the second circular ring 12, a fixing block 13 is fixedly connected to the rotating block 3, a T-shaped rod 14 is inserted into the fixing block 13, one end of the T-shaped rod 14 is inserted into an inner cavity of one limiting hole, and the rotating block 3 is limited so as to avoid rotating the rotating block 3 due to misoperation when the rotating block is not used.

As shown in fig. 3, a T-shaped groove is formed at the bottom of the syringe 1, a T-shaped ring 15 is fixedly connected to the other side of the rotating block 3, and the T-shaped ring 15 can rotate in the T-shaped groove, so that the rotating block 3 can rotate conveniently.

As shown in fig. 3, the T-shaped ring 15 is located in the inner cavity of the T-shaped groove, and the sliding balls are mounted on the side wall of the inner cavity of the T-shaped groove, so that the friction between the T-shaped ring 15 and the T-shaped groove can be effectively reduced, and the rotation of the rotating block 3 is facilitated.

As shown in fig. 3, the first piston 4 is square, and the threaded sleeve 6 is in threaded connection with the threaded hole.

The utility model discloses the theory of operation: when the utility model is used, before urine taking culture or drainage culture, firstly, the sliding plate 11 slides in the chute on the rotating block 3 to expose the threaded hole, so as to take out the needle body 5 next, pull the T-shaped rod 14 downwards to separate from the limiting hole, cancel the fixation of the rotating block 3, under the combined action of the T-shaped groove and the T-shaped ring 15, the rotating block 3 can rotate freely, rotate the rotating block 3 clockwise, because the threaded sleeve 6 on the needle body 5 is in threaded connection with the threaded hole, and because the square cylinder 2 and the first piston 4 are both in square arrangement, the limiting can be carried out when the rotating block 3 rotates, prevent the needle body 5 and the rotating block 3 from rotating together, the threaded sleeve 6 drives the needle body 5 to expose the rotating block 3 under the action of the threaded hole, then the needle body 5 is pierced into the catheter cavity, the circular plate 9 is pulled upwards, the circular plate 9 drives the vertical rod 8 and the second piston 7 to move upwards, thereby inside with the liquid suction cylinder 1 in the pipe under the effect of air pressure, after the sample, anticlockwise rotation turning block 3, syringe needle body 5 contracts under the combined action of thread bush 6 and screw hole, get into turning block 3 inside, slide 11 slides in the spout, slide 11 hides the screw hole, avoided syringe needle body 5 and external air contact effectively when not using, it is inaccurate to prevent bacterium in the air and syringe needle contact and lead to the result that detects, promote T type pole 14, T type pole 14 inserts one of them spacing hole inner chamber, thereby spacing turning block 3, prevent its rotation, therefore, the steam generator is simple in operation, therefore, the clothes hanger is strong in practicability.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A sampling injector with a retractable needle head comprises a needle cylinder and is characterized in that: the bottom of the needle cylinder is provided with a retraction mechanism;

2. A retractable needle sampling syringe according to claim 1, wherein: the needle cylinder is sleeved with a first circular ring close to the top, and scale marks are carved on the needle cylinder.

3. A retractable needle sampling syringe according to claim 1, wherein: a sliding groove is formed in one side of the rotating block, and a sliding plate is connected to the inner cavity of the sliding groove in a sliding mode.

4. A retractable needle sampling syringe according to claim 1, wherein: the needle cylinder is sleeved with a second circular ring close to the bottom, a plurality of limiting holes are formed in one side of the second circular ring, the rotating block is fixedly connected with a fixing block, a T-shaped rod is inserted into the fixing block, and one end of the T-shaped rod is inserted into an inner cavity of one limiting hole.

5. A retractable needle sampling syringe according to claim 1, wherein: the bottom of the needle cylinder is provided with a T-shaped groove, and the other side of the rotating block is fixedly connected with a T-shaped ring.

6. A retractable needle sampling syringe according to claim 5, characterised in that: the T-shaped ring is located in the inner cavity of the T-shaped groove, and a plurality of sliding balls are mounted on the side wall of the inner cavity of the T-shaped groove.

7. A retractable needle sampling syringe according to claim 1, wherein: the first piston is square, and the threaded sleeve is in threaded connection with the threaded hole.