CN217828540U - Syringe and needle seat with protective cover - Google Patents

Abstract

The utility model discloses an injector and a needle seat with a protective cover. The needle base with the protective cover comprises a needle base main body and the protective cover which are integrally formed by injection molding; the needle seat main body is used for inserting and fixing the needle tube; the protective cover is used for turning over at an angle that the opening faces the needle base main body and the needle tube and covering and buckling the needle base main body and the needle tube; the root of the protective cover is locked on the peripheral side of the needle base main body when the protective cover is turned over and buckled on the needle base main body. The needle base with the protective cover provided by the utility model has the advantages that the protective cover and the needle base main body are injection molded into a part, on one hand, in the product assembling process, the flow of the assembling process and the assembling difficulty are simplified, and the cost is low and the efficiency is high; on the other hand, during the use of the product, because the protective cover can not be separated from the needle base main body, the protective cover does not have the risk of separation, relative movement or rotation relative to the needle tube inserted in the needle base main body, and the protective cover is prevented from being dislocated with the needle tube in the process of overturning the cover buckle or being separated from the needle tube in the cover buckle state.

Description

Syringe and needle seat with protective cover

Technical Field

The utility model relates to a needle subassembly field especially relates to a needle file with safety cover. Still relate to a syringe, include aforementioned needle file that has the safety cover.

Background

In the case of an injector, a used needle tube is easy to prick a human body accidentally, which causes disease infection, so that the used needle tube needs to be shielded.

Most injectors typically utilize a self-contained needle shield to shield the needle cannula.

Because the needle sheath of the injector needs to be operated by two hands, and medical staff often cannot keep the two hands free in medical operation, the injector with the needle-prick prevention protective sleeve is provided at present. After the injection of the injector with the puncture-proof protective sleeve is finished, the medical staff can operate the protective sleeve by one hand to enable the protective sleeve to shield the needle tube.

However, the existing syringe with the needle-prick prevention protective sleeve has the disadvantages of complex structure, high production and processing difficulty and low efficiency, and when the syringe is used, the requirement for the medical staff to operate the protective sleeve is higher in order to ensure that the protective sleeve accurately and safely shields the needle tube, and conversely, the phenomenon of improper shielding of the needle tube easily occurs when the medical staff operates, so that great safety risk exists.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a needle file with safety cover can simplify production and processing, reduce cost, can also simplify the shielding operation of protective sheath to the needle tubing, improves the security and the reliability of using. Another object of the present invention is to provide a syringe, which comprises the above-mentioned needle base with a protective cover.

In order to achieve the purpose, the utility model provides a needle seat with a protective cover, which comprises a needle seat main body and a protective cover which are integrally injection molded; the needle seat main body is used for inserting and fixing a needle tube; the protective cover is used for overturning at an angle that the opening faces the needle base main body and the needle tube and covering and buckling the needle base main body and the needle tube; the root of safety cover is in the upset and the cover detain in the week side of needle file main part locks in when the needle file main part.

Preferably, a positioning column is arranged on the periphery of the needle seat main body; the protective cover is provided with a positioning hole for inserting, embedding and positioning the positioning column.

Preferably, the number of the positioning columns is two, and the two positioning columns are respectively positioned on two opposite sides of the needle seat main body; the side wall of the root part of the protective cover is provided with two positioning holes which are distributed oppositely; the distance between the two positioning holes is smaller than the maximum distance between the two positioning columns.

Preferably, the side wall of the root part is also provided with a guide chute; the bottom surface of the guide sliding groove is in smooth transition from the edge of the side wall of the root part to the edge of the inner hole of the positioning hole.

Preferably, a reinforcing rib is arranged in the cavity of the protective cover; the demolding direction of the reinforcing ribs is the same as the lateral opening direction of the protective cover.

Preferably, the protective cover comprises a first curved sidewall; the first curved side wall is positioned on the opposite side of the lateral opening of the protective cover; a finger groove is formed between the root part and the head part of the first curved side wall.

Preferably, the heel is smoothly bulged as compared to the head to form the finger recess.

Preferably, an integrally injection-molded plastic connecting part is further arranged between the needle base body and the protective cover; the surface of the plastic connecting part is provided with a strip-shaped notch groove; the protection cover uses the central axis in breach groove is the upset of axle and cover detains needle file main part and needle tubing.

Preferably, the section of the notch groove is trapezoidal; the width of the cutaway groove tapers inwardly from the surface of the plastic link.

The utility model also provides a syringe, include as above the needle file that has the safety cover.

Compared with the prior art, the utility model provides a needle file with safety cover includes integrative injection moulding's needle file main part and safety cover.

In the needle base with the protective cover, the needle base main body is used for inserting and fixing the needle tube; the protective cover is used for overturning the opening towards the angle between the needle seat main body and the needle tube and covering and buckling the needle seat main body and the needle tube. The root of the protective cover is used as a joint to turn over, namely the part connected with the needle base main body, and the root of the protective cover is mutually locked with the peripheral side of the needle base main body when the protective cover is buckled on the needle base main body, so that the relative fixation of the protective cover with the needle base main body and the needle tube at the current position is realized.

Aiming at the needle seat with the protective cover provided by the utility model, the protective cover and the needle seat main body are molded into a part by injection, which can simplify the assembly process and the assembly difficulty in the product assembly process, and play the roles of saving the cost and improving the production efficiency; also can avoid the safety cover to have needle file main part separation, relative movement or the rotation of needle tubing from the root in the product use, and then avoid the safety cover to detain the in-process and misplace with the needle tubing at the upset cover, perhaps break away from the needle tubing under the cover detains the state, improve shielding operation's efficiency and security.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic structural view of a needle seat with a protective cover according to an embodiment of the present invention;

FIG. 2 is a front view of FIG. 1;

fig. 3 is a sectional view of a needle holder with a protective cover according to an embodiment of the present invention;

fig. 4 is a schematic structural view of the syringe provided in the embodiment of the present invention.

The needle comprises a needle tube 01, a needle cylinder 02, a needle sheath 03, a needle base main body 1, a protective cover 2, a first curved side wall 21, a plastic connecting part 3, a positioning column 4, a positioning hole 5, a guide sliding groove 6, a reinforcing rib 7 and a notch groove 8.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In order to make the technical field of the present invention better understand, the present invention will be described in detail with reference to the accompanying drawings and the detailed description.

Referring to fig. 1 to 4, fig. 1 is a schematic structural view of a needle holder with a protective cover according to an embodiment of the present invention; FIG. 2 is a front view of FIG. 1; fig. 3 is a sectional view of a needle holder with a protective cover according to an embodiment of the present invention; fig. 4 is a schematic structural view of the syringe according to the embodiment of the present invention.

The utility model provides a needle base with a protective cover, which comprises a needle base main body 1 for inserting and fixing a needle tube 01 and a protective cover 2 for covering and buckling the needle base main body 1 and the needle tube 01; the protective cover 2 is positioned on one side of the needle base main body 1, and the two are integrally formed by injection molding. When the needle base with the protective cover is used, the protective cover 2 overturns around the root of the protective cover, namely the joint of the protective cover 2 and the needle base main body 1, so that the root cover of the protective cover 2 is buckled and locked on the peripheral side of the needle base main body 1, and the head and the middle cover of the protective cover 2 are buckled on the needle tube 01 inserted in the needle base main body 1.

The root of the protection cover 2 is locked on the peripheral side of the needle base body 1, namely, when the head part and the middle part of the protection cover 2 are buckled with the needle tube 01, the root of the protection cover 2 is positioned at Zhou Cewai of part or all of the needle base body 1 and is fixedly connected with the needle base body 1. As for the specific mode that safety cover 2 and needle file main part 1 realized the locking, include and be not limited to the two adopt concave-convex structure to realize mortise-tenon joint, 2 interference cover of safety cover locate needle file main part 1 outside etc..

In this embodiment, the protection cover 2 may be configured as an elongated cover structure with an opening provided on a side surface, forming an elongated cover body shape with a lateral opening. Therefore, the both ends of the protective cover 2 in the longitudinal direction are the head and the root of the protective cover 2, respectively. Wherein, the root is connected with the needle base main body 1 and is used for covering and buckling and is connected with the needle base main body 1; the head part and the middle part are used for covering and buckling the needle tube 01 inserted in the needle base main body 1. Obviously, in the case of the above-described protective cover 2 having an elongated cover shape, the lateral direction of the protective cover 2 refers to the radial periphery of the protective cover 2, and is distinguished from the longitudinal ends of the protective cover 2.

As for the shape of the needle holder body 1, the specific arrangement can be combined with the actual requirement. For example, the hub body 1 may be provided as a tubular column-like structure. Referring to fig. 1 to 3, a first cylinder for inserting the needle tube 01 is arranged inside one end of the needle holder body 1 along the axial direction, a cross rib plate is arranged on the periphery of the first cylinder, and a second cylinder is sleeved on the peripheries of the first cylinder and the cross rib plate. The other end of the needle holder body 1 along the axial direction is internally provided with a luer locking connector for matching with a needle cylinder 02 with any specification.

For the integrally injection-molded protection cover 2 and the needle hub body 1, since the root of the protection cover 2 can be deformed to turn over the protection cover 2, the protection cover 2 and the needle hub body 1 can be made of elastic or plastic materials, including but not limited to thermoplastic materials.

Because the needle base with the protective cover is formed by adopting the processing technology of integral injection molding, no matter the needle base main body 1 or the protective cover 2 is convenient for demoulding, the peripheral outline and the inner cavity of the needle base main body 1 extend towards the respective demoulding direction, and in addition, when the needle base with the protective cover is not used, the openings of the cavities of the needle base main body 1 and the protective cover 2 can also be distributed in the same direction.

To sum up, the needle base with the protective cover provided by the utility model injection molds the protective sleeve and the needle base main body 1 into a part, simplifies the process flow and the assembly difficulty of the injector including the needle base in the product assembly process, and plays the roles of saving the cost and improving the production efficiency; during the product use for there is not separation, relative movement or pivoted risk in safety cover 2 and the needle file main part 1 that the cartridge has needle tubing 01, avoids safety cover 2 to detain the in-process and misplace with needle tubing 01 at the upset cover, perhaps avoids being in the safety cover 2 that the cover detained the state and breaks away from needle tubing 01.

The needle base with the protective cover provided by the present invention will be further described with reference to the accompanying drawings and embodiments.

On the basis of the above embodiment, the needle base with the protection cover provided by the utility model realizes the locking of the root of the needle base main body 1 and the root of the protection cover 2 by the cooperation of the shaft hole.

For example, the needle holder body 1 is provided with a positioning post 4 on the periphery thereof, and the protection cover 2 is provided with a positioning hole 5 for inserting and positioning the positioning post 4. The positioning hole 5 can be arranged in the cavity of the protection cover 2 and also can be arranged on the cover body wall of the protection cover 2. As for aforementioned reference column 4 and locating hole 5, the slider in the usable mould realizes injection moulding, and the drawing of patterns is convenient and the shaping high quality.

As for how the positioning column 4 and the positioning hole 5 are connected when the protection cover 2 is turned over to the peripheral side of the needle holder body 1 depends on the relative position relationship between the positioning column 4 and the positioning hole 5.

For example, when the positioning column 4 and the positioning hole 5 are distributed oppositely, the axial direction of the positioning column 4 and the axial direction of the positioning hole 5 are both located in the turning plane of the protection cover 2, when the protection cover 2 is turned over to the needle holder main body 1, the positioning hole 5 is close to and inserted into the shaft end of the positioning column 4, and at this time, the positioning hole 5 and the positioning column 4 can be connected through the shaft hole interference fit.

If the axial direction of the positioning hole 5 and the axial direction of the positioning column 4 are both perpendicular to the turning plane of the protection cover 2, when the protection cover 2 is turned over to the needle seat main body 1, the protection cover 2 is extruded and deformed by the needle seat main body 1 to expand, so that the positioning hole 5 is sleeved on the positioning column 4. Since the axial direction of the positioning hole 5 and the axial direction of the positioning column 4 are both perpendicular to the turning plane of the protection cover 2 in this example, the positioning hole 5 which is already sleeved on the positioning column 4 cannot automatically separate from the positioning column 4, and the fixed connection between the needle holder main body 1 and the protection cover 2 is realized.

Taking fig. 1 as an example, the needle base with the protection cover can be provided with two positioning columns 4 symmetrically distributed on the periphery of the needle base main body 1, and correspondingly, the side wall of the root part of the protection cover 2 is provided with two positioning holes 5 distributed oppositely, and the distance between the two positioning holes 5 is smaller than the maximum distance between the two positioning columns 4.

The maximum distance between the two positioning columns 4 refers to the distance between two shaft ends of the two positioning columns 4 which are farthest away.

To the above-mentioned needle file that has the safety cover, when the safety cover 2 overturns towards needle file main part 1 and needle tubing 01, the root lateral wall of safety cover 2 is extruded and is expanded by needle file main part 1 for the interval of two locating holes 5 enlarges to the biggest interval that is not less than two reference columns 4, realizes that locating hole 5 cover locates reference column 4. Once locating hole 5 cover is located reference column 4, protective cover 2 and needle file main part 1 are locked under the current position, if do not exert great external force to protective cover 2 and needle file main part 1, protective cover 2 and needle file main part 1 are difficult to be unpacked apart once more.

In order to achieve better technical effect, on the basis of the above embodiment, the protection cover 2 of the present invention is further provided with a guiding chute 6 at the side wall of the root portion.

The guide sliding chute 6 and the positioning hole 5 are arranged on the same planar structure, namely the same root side wall. The groove bottom surface of the guide sliding groove 6 is in smooth transition from the edge of the side wall of the root part to the inner hole edge of the positioning hole 5, and the groove width of the guide sliding groove 6 is gradually reduced from the edge of the side wall of the root part to the inner hole edge of the positioning hole 5.

Referring to fig. 1, the groove bottom surface of the guide chute 6 may be parallel to the surface of the root side wall or may be an inclined surface inclined with respect to the surface, with reference to the surface of the root side wall where the guide chute 6 is located.

Take the example that the groove bottom surface of the guide chute 6 is set as an inclined surface. The distance between the groove bottoms of the two guide runners 6, which are located in each case on the two opposing root side walls of the protective hood 2, is not equal everywhere. In the orientation shown in fig. 1, the distance between the groove bottoms of the two guide runners 6 located on the left side of fig. 1 is greater than the distance between the two guide runners 6 located on the right side of fig. 1. Based on the guide chute 6 and the chute bottom surface thereof, when the protection cover 2 turns over the cover to buckle the needle seat main body 1, the guide chute 6 can guide the relative movement direction of the positioning column 4, so that the positioning column 4 can accurately and quickly slide and is embedded into the positioning hole 5. For the protection cover 2 and the needle base main body 1, the arrangement of the guide sliding groove 6 can simplify the turnover locking of the protection cover 2 and the needle base main body 1, and ensure that the protection cover 2 can be safely covered and buckled on the periphery of the needle tube 01 even if the acting force applied to the protection cover 2 at each time has deviation in force and angle on the premise that the turnover direction of a user is correct.

To the utility model discloses a safety cover 2 that adopts is equipped with strengthening rib 7 in its die cavity. Since the needle holder with the protective cover is processed and molded in an integral injection molding mode, the demolding direction of the reinforcing rib 7 arranged in the protective cover 2 is the same as the lateral opening direction of the protective cover 2.

In particular, any one of the ribs 7 disposed in the cavity of the protective cover 2 is a plane perpendicular to the bottom surface of the protective cover 2. Taking fig. 1 as an example, the cover bottom surface of the protection cover 2 refers to a surface opposite to the lateral opening direction of the protection cover 2, and is also referred to as a first curved side wall 21 hereinafter.

To the utility model discloses the safety cover 2 that adopts, safety cover 2 is including the first curved surface lateral wall 21 that is located the open-sided offside of side direction of safety cover 2, and is visible, first curved surface lateral wall 21 is the above the cover bottom surface promptly. In this example, a finger groove is provided between the root and the head of the first curved sidewall 21. In combination with the use habit of the user, the shape of the finger groove is matched with the shape of the fingertip of the thumb or the forefinger of the user, so that the user can apply pressure to the protective cover 2 through the finger groove to realize the turnover of the protective cover 2.

In addition, the protective cover 2 further has a second curved side wall and a third curved side wall, and the two oppositely distributed root side walls are part of the second curved side wall and part of the third curved side wall.

Considering the shape of the needle hub body 1 and the needle tube 01 covered and buckled by the protection cover 2 and the protection cover 2, the root of the protection cover 2 bulges smoothly compared with the head of the protection cover 2, and at this time, the joint surface between the root and the head of the protection cover 2 forms a finger groove. Because the root of the protection cover 2 bulges and expands compared with the head, correspondingly, the size of the root of the cavity in the cavity of the protection cover 2 is larger than that of the head of the cavity, so that the protection cover can be better suitable for the shape and the size of the needle seat main body 1 and the shape and the size of the needle tube 01.

In addition, a plastic connecting part 3 which is integrally injection-molded with the needle base main body 1 and the protective cover 2 is arranged between the needle base main body 1 and the protective cover 2, one end of the plastic connecting part 3 is connected with the needle base main body 1, and the other end of the plastic connecting part is connected with the root part of the protective cover 2. When the protective cover 2 is turned over with respect to the hub body 1, the plastic link 3 is bent and deformed toward the side of the lateral opening of the protective cover 2.

The surface of the plastic connecting portion 3 may be provided with a long-strip notch groove 8. When the protector 2 is turned over, the needle hub body 1 and the needle tube 01 inserted into the needle hub body 1 rotate about the center axis of the notch 8.

The cross section of the notch groove 8 is trapezoidal, and the groove width of the notch groove 8 is tapered inward from the surface of the plastic connecting portion 3. In fig. 1, the notch groove 8 provided in the lower surface of the plastic connecting portion 3 has an inverted trapezoidal cross section with a small top and a large bottom.

The utility model also provides a syringe, including the needle file that has the safety cover as provided in any one of the above embodiments.

In addition to the hub body 1, the protective cap 2, and the plastic connecting portion 3, the syringe may further include a cylinder 02 having a piston and a plunger, and a needle protector 03 for covering and buckling the needle tube 01 in the axial direction of the needle tube 01.

The needle shield 03 is mostly designed into a cylindrical needle shield 03, is used for product packaging of an injector, plays a role in shielding the needle tube 01, and is usually used before injection and needs to be pulled out for disposal during injection. In contrast, the protective cover 2 of the present invention is used after the injection of the syringe is completed.

The syringe and the needle holder with the protective cover provided by the utility model are introduced in detail above. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims (10)

1. A needle base with a protective cover is characterized by comprising a needle base main body (1) and a protective cover (2) which are integrally formed by injection molding; the needle seat main body (1) is used for inserting and fixing a needle tube (01); the protective cover (2) is used for overturning at an angle that the opening faces the needle seat main body (1) and the needle tube (01) and covering and buckling the needle seat main body (1) and the needle tube (01); the root of safety cover (2) overturn and the cover detain in needle file main part (1) the time lock in week side of needle file main part (1).

2. The needle holder with the protective cover according to claim 1, characterized in that a positioning column (4) is arranged on the periphery of the needle holder main body (1); the protective cover (2) is provided with a positioning hole (5) for inserting and positioning the positioning column (4).

3. The needle holder with protective cover according to claim 2, characterized in that the number of the positioning posts (4) is two, and the two positioning posts (4) are respectively located on two opposite sides of the needle holder main body (1); the side wall of the root part of the protective cover (2) is provided with two positioning holes (5) which are distributed oppositely; the distance between the two positioning holes (5) is smaller than the maximum distance between the two positioning columns (4).

4. A needle holder with a protective cover according to claim 3, characterized in that the root side wall is further provided with a guide runner (6); the groove bottom surface of the guide sliding groove (6) is in smooth transition from the edge of the side wall of the root part to the edge of the inner hole of the positioning hole (5).

5. A needle holder with a protective cover according to any one of claims 1 to 4, characterized in that a reinforcing rib (7) is arranged in a cavity of the protective cover (2); the demolding direction of the reinforcing ribs (7) is the same as the lateral opening direction of the protective cover (2).

6. A needle holder with a protective cover according to any one of claims 1 to 4, characterized in that the protective cover (2) comprises a first curved side wall (21); the first curved side wall (21) is located on the opposite side of the lateral opening of the protective cover (2); a finger groove is arranged between the root part and the head part of the first curved side wall (21).

7. The needle hub with a boot as claimed in claim 6, wherein the root is smoothly bulged as compared to the head to form the finger groove.

8. A needle holder with a protective cover according to any one of claims 1 to 4, characterized in that an integrally injection-molded plastic connecting part (3) is further arranged between the needle holder body (1) and the protective cover (2); the surface of the plastic connecting part (3) is provided with a strip-shaped gap groove (8); the protection cover (2) with the central axis in breach groove (8) is the upset of axle and cover and detains needle file main part (1) and needle tubing (01).

9. A needle holder with a protecting cover according to claim 8, characterized in that the section of the notched groove (8) is trapezoidal; the width of the notch groove (8) is gradually reduced from the surface of the plastic connecting part (3) to the inside.

10. A syringe comprising a hub with a protective cover as claimed in any one of claims 1 to 9.

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