CN209751833U

CN209751833U - Multifunctional syringe

Info

Publication number: CN209751833U
Application number: CN201822036284.6U
Authority: CN
Inventors: 张庆仪
Original assignee: First Affiliated Hospital of PLA Military Medical University
Current assignee: Nanfang Hospital; First Affiliated Hospital of PLA Military Medical University
Priority date: 2018-12-05
Filing date: 2018-12-05
Publication date: 2019-12-10
Anticipated expiration: 2028-12-05

Abstract

The utility model belongs to the field of medical equipment, in particular to a multifunctional injector, which comprises a cylindrical needle cylinder, the needle cylinder comprises a needle cylinder body, a needle head socket arranged at the bottom of the needle cylinder body and a gripping area arranged at the top of the needle cylinder body, a plunger rod guided in the needle cylinder in a longitudinal displacement mode is tightly matched in the needle cylinder, a cylindrical slender push rod for drawing and pushing is penetrated through the inner core of the plunger rod, the push rod is provided with an upper part and a lower part, the upper part is a plastic drawing rod made of plastic materials, the lower part is a hollow metal needle head made of metal materials, one or more small holes for conveying liquid medicine are arranged at the tip end of the metal needle head and on the needle body, after the utility model is used, the push rod can be exactly and effectively retracted into the needle cylinder, the reuse is avoided, the needle tip is completely shielded, the risk of needle stick injury is eliminated, and the infection and disease spreading cost caused by the fact that medical care personnel and other personnel are injured by the injection needle are avoided.

Description

Multifunctional syringe

Technical Field

The utility model belongs to the field of medical equipment, a multifunctional injector is related to.

Background

In the medical field, syringes are widely used for injecting liquid medicines and extracting blood from patients with some diseases. After the injector is used, a safety shield is generally sleeved on a needle head of the injector, then the injector is recovered, and once the operation is not proper, workers are easily stabbed in the sleeving working process, so that the possibility of infection of some diseases is increased; meanwhile, when a large number of discarded syringes are stored together, the protective covers of the needles are easy to scratch off, when workers clean the recovered syringes, some exposed needles can injure the recovery workers, and the possibility of disease infection can be increased, so that a plurality of medical equipment manufacturers are dedicated to research and develop syringes capable of retracting the needles to reduce the probability of puncture injury of users.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention provides a retractable needle multifunctional syringe to solve the problem of syringe recycling hygiene and reduce the possibility of disease infection, so as to solve the problem of syringe recycling hygiene and prevent infection by the needle during recycling.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a multifunctional injector, its characterized in that, including cylindric cylinder, the cylinder includes the cylinder body, set up the syringe needle socket in the bottom and set up the gripping area at the top, inside closely matched with of cylinder has the plunger rod of guide in the cylinder with the mode of longitudinal displacement, the inner core of plunger rod wears to be used for the cylindric slender push rod of pull propelling movement, the push rod is provided with two parts from top to bottom, the upper half is the plastics pull pole of plastics material, the lower half is the hollow metal syringe needle of metal material, set up one or more aperture that can supply liquid medicine to carry on metal syringe needle point end and the needle body.

Optionally, the upper half plastic material part and the lower half metal material part of the push rod are of an integral structure which is tightly matched with each other through threads.

Optionally, the syringe is made of transparent plastic material, and the outer wall of the syringe is provided with scales.

Optionally, one end of the plunger rod in the syringe is provided with a rubber plug, and the rubber plug is in seamless fit with the inner wall of the syringe.

Optionally, 1 circular aperture has been seted up at the metal syringe needle point end, evenly sets up 6 circular apertures that can supply the liquid medicine to carry on the hollow metal needle body of metal syringe needle upper end.

Optionally, the needle hub is in the form of a regular tapered bore which limits axial movement of the needle.

Optionally, the barrel body, the needle hub and the gripping area are of an integrally formed construction.

Optionally, the grip region is at least partially provided with a friction coating, which is composed of a material different from the material of the grip region.

The beneficial effects of the utility model reside in that: after the syringe is used, the push rod can be accurately and effectively retracted into the syringe to avoid repeated use, so that the needle tip is completely shielded, the risk of needle stick injury is eliminated, and infection and disease spreading caused by the fact that medical care personnel and other personnel are injured by an injection needle are avoided.

Drawings

In order to make the purpose, technical scheme and beneficial effect of the utility model clearer, the utility model provides a following figure explains:

FIG. 1 is a schematic view of the structure of the needle of the present invention retracted into the barrel;

Fig. 2 is a schematic structural view of the syringe needle of the present invention extending out of the syringe needle socket.

Detailed Description

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Reference numerals in the drawings of the specification include: a push rod 1, a plunger rod 2, a rubber plug 3, a needle socket 4, a needle cylinder 5, a metal needle 6 and a gripping area 7.

As shown in fig. 1-2, a multifunctional injector comprises a cylindrical syringe 5, the syringe 5 comprises a syringe body, a tapered needle socket 4 disposed at the bottom of the syringe 5 for limiting the axial movement of the needle, and a grip region 7 disposed at the top of the syringe 5, the grip region 7 is at least partially provided with a friction coating, the friction coating is made of a material different from that of the grip region 7, the syringe 5 body, the needle socket 4, and the grip region 7 are integrally formed, a plunger rod 2 guided in the syringe 5 in a longitudinally displaceable manner is tightly fitted inside the syringe 5, one end of the plunger rod 2 in the syringe 5 is provided with a rubber plug 3, the rubber plug 3 is in seamless fit with the inner wall of the syringe 5, an inner core of the plunger rod 2 penetrates through a cylindrical slender push rod 1 for pulling and pushing, the push rod 1 is provided with an upper part and a lower part, and the upper part is a plastic pull rod, the lower half is metal syringe needle 6 and push rod 1 plastics material part of metal material and metal material part be through the mutual body structure that closely cooperates of screw thread, and 1 circular aperture has been seted up at 6 pointed ends of metal syringe needle, evenly sets up 6 circular apertures that can supply the liquid medicine to carry on the cavity metal syringe needle body of 6 upper ends of metal syringe needle.

When the syringe is used, the grasping area 7 at the top of the syringe 5 is held by hand, the push rod 1 is pushed by a thumb to move downwards along the axial direction of the syringe 5, the metal needle 6 slowly penetrates out of the conical needle socket 4 under the action of force, the syringe stops after the needle is extended to one end of the needle socket 4, and is a normal-use syringe at the moment, the metal needle 6 cannot move due to the pretightening force given by the conical needle socket 4, the push rod 1 is kept motionless when the normal work such as injection or medicine drawing is carried out at the moment, the liquid in the syringe 5 is pressed into the pores on the surface of the metal needle 6 by the rubber plug 3 through pressure by pushing the plunger rod 2 sleeved outside the push rod 1, so that the liquid is conveyed, and the injection purpose can be achieved.

After the injector is used, the push rod 1 is slightly pulled upwards by hand until the metal needle 6 is pulled back into the syringe 5, the injected needle cannot be exposed in the air, secondary pollution is avoided, the push rod 1 at the upper end partially expends the top of the plunger rod 2 by drawing the metal needle 6, the part of the top of the plunger rod 2 is expended, the push rod 1 is bent by a thumb, axial pushing or drawing cannot be carried out on the push rod 1, the metal needle 6 is locked in the syringe 5, the metal needle 6 is prevented from being inserted out of the needle socket 4 again, and the safety of the injector in the recovery process of waste medical instruments after the injector is used is ensured more conveniently and quickly.

Finally, it is noted that the above-mentioned preferred embodiments illustrate rather than limit the invention, and that, although the invention has been described in detail with reference to the above-mentioned preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the invention as defined by the appended claims.

Claims

1. A multifunctional injector is characterized by comprising a cylindrical needle cylinder, wherein the needle cylinder comprises a needle cylinder body, a needle head socket arranged at the bottom of the needle cylinder body and a gripping area arranged at the top of the needle cylinder body, a plunger rod guided in the needle cylinder in a longitudinal displacement mode is tightly matched in the needle cylinder, a cylindrical long and thin push rod for drawing and pushing penetrates through the inner core of the plunger rod, the push rod is provided with an upper part and a lower part, the upper part is a plastic drawing rod made of plastic materials, the lower part is a hollow metal needle head made of metal materials, the upper part and the lower part of the push rod are of an integrated structure tightly matched through threads, one or more small holes for conveying liquid medicine are formed in the tip end and the needle body of the metal needle head, the needle cylinder is made of transparent plastic materials, and scales are arranged on the outer wall of the needle cylinder, and a rubber plug is arranged at one end of the plunger rod in the needle cylinder and is in seamless fit with the inner wall of the needle cylinder.

2. The multifunctional syringe as claimed in claim 1, wherein the tip of the metal needle is formed with 1 circular hole, and the hollow metal needle body at the upper end of the metal needle is uniformly formed with 6 circular holes for delivering the liquid medicine.

3. A multi-purpose injector as set forth in claim 2 wherein said needle hub is of a regular tapered configuration limiting axial movement of the needle.

4. the multi-purpose syringe of claim 3, wherein said barrel body, needle hub and grip area are of unitary construction.

5. A multiple function syringe according to claim 4 wherein said grip region is at least partially provided with a friction coating comprised of a material different from the material of said grip region.