CN214342326U

CN214342326U - Blood taking needle head sheath structure

Info

Publication number: CN214342326U
Application number: CN202022981107.2U
Authority: CN
Inventors: 张善海; 陈肖茂; 刘亭
Original assignee: Yongyue Medical Technology Kunshan Co ltd
Current assignee: Yongyue Medical Technology Kunshan Co ltd
Priority date: 2020-12-11
Filing date: 2020-12-11
Publication date: 2021-10-08
Anticipated expiration: 2030-12-11

Abstract

A protective sleeve structure for a blood taking needle head comprises a needle head, a needle seat, a connecting pipe and a protective sleeve, wherein the needle head is arranged at the head part of the connecting pipe, and the tail part of the connecting pipe is connected with the needle seat; a cylindrical cavity is arranged in the sheath, and the connecting pipe is movably arranged in the cylindrical cavity; the sheath comprises a first guard plate and a second guard plate, the first guard plate and the second guard plate are respectively provided with a corresponding arc groove, the sheath is formed by vertically and correspondingly assembling the first guard plate and the second guard plate, and meanwhile, the cylindrical cavity is formed by splicing the arc grooves arranged on the first guard plate and the second guard plate; the sheath structure of this scheme design is divided into two with the sheath structure, and the sheath casing is opened into the plane die sinking along the axis split, closes again after injection moulding and connects with the buckle, and this structural change can make the mould make no longer need make the long needle mold insert, has simplified the mould structure, has shortened the shaping cycle.

Description

Blood taking needle head sheath structure

Technical Field

The utility model belongs to the technical field of medical equipment, concretely relates to blood taking needle head protective sleeve structure.

Background

Safety blood taking needle need design a sheath in the in-process of production and be used for protecting needle part, and traditional blood taking needle sheath all adopts integral type injection moulding's mode, nevertheless can remove in the sheath in order to guarantee the part of fixed syringe needle, so need set up a cylindricality cavity (being the long through hole) inside when the manufacturing of sheath, so the sheath mould need set up the inlay needle when manufacturing, inlay the needle diameter little, length is big, brings very big difficulty to the manufacturing of mould, is difficult to realize the volume production.

Therefore, there is a need for a lancet head sheath structure to solve the above problems.

Disclosure of Invention

In order to overcome the defects in the prior art, the utility model aims to provide a blood taking needle head protective sleeve structure.

In order to achieve the above objects and other related objects, the present invention provides a technical solution: a protective sleeve structure for a blood taking needle head comprises a needle head, a needle seat, a connecting pipe and a protective sleeve, wherein the needle head is arranged at the head part of the connecting pipe, and the tail part of the connecting pipe is connected with the needle seat; a cylindrical cavity is arranged in the sheath, and the connecting pipe is movably arranged in the cylindrical cavity; the sheath includes first backplate and second backplate, corresponding circular arc groove has all been seted up on first backplate with the second backplate, the sheath by first backplate with the second backplate corresponds the equipment from top to bottom and forms, simultaneously cylindrical cavity by first backplate with the circular arc groove concatenation of seting up on the second backplate forms.

Preferably, a clamping block is arranged on the first protection plate, a clamping groove corresponding to the clamping block is arranged on the second protection plate, and the first protection plate and the second protection plate are correspondingly assembled in the clamping groove through the clamping block.

Preferably, a sliding block is fixedly arranged on the connecting pipe body, and a sliding groove corresponding to the sliding block is formed in the sheath.

Preferably, a raised limiting block is arranged on the inner wall surface of the sliding groove, the limiting block is located at the tail of the sliding groove, and a limiting groove corresponding to the limiting block is arranged on the sliding block.

Because of the application of the technical scheme, compared with the prior art, the utility model the advantage that has as follows:

the sheath structure of this scheme design is divided into two with the sheath structure, and the sheath casing is opened into the plane die sinking along the axis split, closes again after injection moulding and connects with the buckle, and this structural change can make the mould make no longer need make the long needle mold insert, has simplified the mould structure, has shortened the shaping cycle, makes the mould can the volume production, improves production efficiency.

Drawings

Fig. 1 is a schematic view of a disassembled structure of a sheath of a blood collection needle.

Fig. 2 is a schematic view of an assembly structure of the lancet sheath.

In the above drawings, the needle head 1, the needle seat 2, the connecting pipe 3, the sheath 4, the cylindrical cavity 5, the first guard plate 6, the second guard plate 7, the fixture block 8, the clamping groove 9, the sliding block 10, the sliding groove 11, the limiting block 12 and the limiting groove 13.

Detailed Description

The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.

Please refer to fig. 1-2. It should be understood that in the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship that the product of the present invention is usually placed when in use, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the term refers must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance. The terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should be further noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may include, for example, a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection via an intermediate medium, and a connection between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1-2, a sheath 4 structure of a blood collection needle comprises a needle 1, a needle base 2, a connecting tube 3 and a sheath 4, wherein the needle 1 is installed at the head of the connecting tube 3, and the tail of the connecting tube 3 is connected with the needle base 2; a cylindrical cavity 5 is arranged inside the sheath 4, and the connecting pipe 3 is movably arranged in the cylindrical cavity 5; the sheath 4 comprises a first guard plate 6 and a second guard plate 7, corresponding arc grooves are formed in the first guard plate 6 and the second guard plate 7, the sheath 4 is formed by vertically and correspondingly assembling the first guard plate 6 and the second guard plate 7, and meanwhile, the cylindrical cavity 5 is formed by splicing the arc grooves formed in the first guard plate 6 and the second guard plate 7; the 4 structures of sheath of this scheme design are divided into two with 4 structures of sheath, and 4 casings of sheath are opened into the plane die sinking along the axis split, and the reunion is after injection moulding and is connected with the buckle, and this structural change can make the mould make no longer need make the long needle mold insert, has simplified the mould structure, has shortened the shaping cycle, makes the mould can the volume production, improves production efficiency.

The preferred embodiment is as follows:

a clamping block 8 is arranged on the first protection plate 6, a clamping groove 9 corresponding to the clamping block 8 is arranged on the second protection plate 7, and the first protection plate 6 and the second protection plate 7 are clamped in the clamping groove 9 through the clamping block 8 and assembled correspondingly; the first protection plate 6 and the second protection plate 7 are fixedly connected through the clamping groove 9 and the clamping block 8, and the assembly is convenient and fast.

A sliding block 10 is fixedly arranged on the pipe body of the connecting pipe 3, and a sliding groove 11 corresponding to the sliding block 10 is formed in the sheath 4; the connecting tube 3 is moved in the cavity of the sheath 4 by sliding the slider 10 in the sliding groove 11.

A raised limit block 12 is arranged on the inner wall surface of the sliding groove 11, the limit block 12 is positioned at the tail part of the sliding groove 11, and a limit groove 13 corresponding to the limit block 12 is arranged on the sliding block 10; when the connecting pipe 3 moves to the tail part of the cavity, the limiting groove 13 arranged on the sliding block 10 can be matched with the limiting block 12 at the tail part of the cavity to realize limiting.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. The utility model provides a blood taking needle head sheath structure which characterized in that: the needle is arranged at the head of the connecting pipe, and the tail of the connecting pipe is connected with the needle seat; a cylindrical cavity is arranged in the sheath, and the connecting pipe is movably arranged in the cylindrical cavity; the sheath includes first backplate and second backplate, corresponding circular arc groove has all been seted up on first backplate with the second backplate, the sheath by first backplate with the second backplate corresponds the equipment from top to bottom and forms, simultaneously cylindrical cavity by first backplate with the circular arc groove concatenation of seting up on the second backplate forms.

2. The lancet head sheath structure of claim 1, wherein: the first protection plate is provided with a clamping block, the second protection plate is provided with a clamping groove corresponding to the clamping block, and the first protection plate and the second protection plate are correspondingly assembled in the clamping groove through the clamping block.

3. The lancet head sheath structure of claim 1, wherein: the connecting pipe body is fixedly provided with a sliding block, and the sheath is provided with a sliding groove corresponding to the sliding block.

4. The lancet head sheath structure of claim 3, wherein: the inner wall surface of the sliding groove is provided with a raised limiting block, the limiting block is positioned at the tail part of the sliding groove, and the sliding block is provided with a limiting groove corresponding to the limiting block.