CN216222535U

CN216222535U - Special needle of implanted device of dosing with collapsible needle tubing protective sheath

Info

Publication number: CN216222535U
Application number: CN202122195666.5U
Authority: CN
Inventors: 常保鑫; 李咏懋; 吴超; 阚志国; 张建娟
Original assignee: Tianjin Hanaco Medical Co ltd
Current assignee: Tianjin Hanaco Medical Co ltd
Priority date: 2021-09-12
Filing date: 2021-09-12
Publication date: 2022-04-08
Anticipated expiration: 2031-09-12

Abstract

The utility model provides a special needle with a foldable needle tube protective sleeve for an implanted drug delivery device, which comprises a protective sleeve, a steel needle, needle wings and a needle seat, wherein two outer sides of the protective sleeve are symmetrically provided with a handle, and the inner sides of the two handles are symmetrically provided with convex columns; one side of the needle wing is provided with a round hole I, the edge of the round hole I is provided with a boss, and the other side of the round hole I is provided with a round hole II; two concave holes are symmetrically arranged on the two outer side planes of the needle seat. The needle holder is simple in structure and convenient to use, the sheath capable of being turned over up and down is arranged on the needle seat, and the steel needle is accommodated in the sheath, so that pollution and accidental injury of acupuncture caused by the fact that the sheath slides down and is lost in the using process are avoided; the boss and the round hole structure that set up respectively in the needle wing left and right sides, the needle wing of both sides can avoid producing relative slip when the fifty percent discount punctures, plays the positioning action, can not influence the puncture effect.

Description

Special needle of implanted device of dosing with collapsible needle tubing protective sheath

Technical Field

The utility model relates to an implanted special needle, in particular to a special needle with a foldable needle tube protective sleeve for an implanted drug delivery device.

Background

Chemotherapy is one of the most effective means for treating cancer clinically at present, intravenous infusion is the main administration route of chemotherapy, an implanted administration device is commonly called as an intravenous infusion port, a central venous channel is established by connecting a subcutaneously implanted medicine box with a catheter, long-term and frequent central intravenous injection medicines can be changed into simple subcutaneous puncture, the purpose is to reduce the stimulation of repeated puncture on blood vessels, relieve the pain of patients during injection and reduce the incidence rate of infection, further improve the life quality of the patients, and in order to reduce the falling scraps generated in the puncture process and prolong the service life of the intravenous infusion port, a puncture needle with a special structure, namely a special needle for the implanted administration device, is required to be adopted.

The common special needle for the implantable drug delivery device consists of a pipeline, needle wings, a steel needle and a sheath, wherein in order to increase the puncture force of the steel needle, the steel needle is provided with a silicone oil coating, medical workers pull out the sheath of the special needle for the implantable drug delivery device firstly during clinical use and then puncture the needle, and after the infusion is completed, the medical workers need to cover the steel needle with the sheath again so as to avoid pollution and puncture other people. However, the process of pulling out the sheath before using the special needle and the process of inserting the sheath after using the special needle bring inconvenience to medical staff, and the medical staff can discard the sheath after pulling out the sheath or can not find the sheath due to improper storage before using the special needle, so that the traditional special needle for the implanted drug delivery device with the detachable sheath has certain potential safety hazards in the clinical use process.

In addition, because of the characteristics of the plastic parts of the traditional needle wing fin, the friction force between the two fin bodies is relatively small, when an operator uses the needle wing fin, the two fin bodies are easy to displace, the puncture acting point is deviated, and the puncture failure probability is increased.

Disclosure of Invention

In view of the defects in the prior art, the utility model provides the special needle for the implanted drug delivery device with the foldable needle tube protective sleeve, so that the problems that in the prior art, the steel needle is simply and effectively prevented from accidentally injuring others, the structural design damages to the steel needle and a silicon oil coating on the steel needle are greatly reduced, and the structural design of the needle wing effectively improves the puncture point deviation caused by the sliding of the needle wing are solved.

In order to achieve the purpose, the utility model adopts the technical scheme that: the utility model provides a special needle of implanted device of dosing with collapsible needle tubing protective sheath, includes sheath, steel needle, needle wing, needle file, sheath, needle wing, needle file are integrated into one piece, are the flexonics between sheath and the needle file, and the junction is equipped with crease, its characterized in that: the two outer sides of the sheath are symmetrically provided with a handle, and the inner sides of the two handles are symmetrically provided with convex columns; a circular hole I is formed in one side of the needle wing, a boss is arranged on the edge of the circular hole I, and a circular hole II is formed in the other side of the needle wing; two concave holes are symmetrically arranged on the two outer side planes of the needle seat.

The utility model has the beneficial effects that: the needle holder is simple in structure and convenient to use, the sheath capable of being turned over up and down is arranged on the needle seat, and the steel needle is accommodated in the sheath, so that pollution and accidental injury of acupuncture caused by the fact that the sheath slides down and is lost in the using process are avoided; the gap distance between the two small claws in the clamping groove on the inner side of the sheath can be adjusted through the two handles on the sheath, so that the steel needle is prevented from sliding out of the sheath, and the damage to the steel needle and a silicon oil coating on the steel needle when the sheath is opened and closed is avoided; according to the utility model, through the boss and the round hole structures respectively arranged on the left side and the right side of the needle wing, the needle wings on the two sides can be prevented from sliding relatively when being folded for puncture, so that a positioning effect is achieved, and the puncture effect is not influenced.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a bottom view of the present invention;

FIG. 3 is a schematic view of the present invention in use;

FIG. 4 is a schematic view of the present invention in a pre-use state;

fig. 5 is a cross-sectional view a-a of fig. 1 of the present invention.

Detailed Description

As shown in fig. 1 to 5, a needle with a foldable needle tube protective sleeve special for an implanted drug delivery device comprises a sheath 1, a steel needle 2, a needle wing 3 and a needle base 4, wherein the sheath 1, the needle wing 3 and the needle base 4 are integrally formed, the sheath 1 is flexibly connected with the needle base 4, a crease 5 is arranged at the joint, and the sheath 1 can be folded up and down along the crease 5; the needle wings 3 are positioned at two sides of the needle base 4 and are flexibly connected with the needle base 4, one end of the steel needle 2 is arranged in the steel needle passage 4-1 of the needle base 4, the other end of the steel needle is a tip and is vertical to the needle base 4 downwards, two outer sides of the sheath 1 are symmetrically provided with a handle 1-1, and the inner sides of the two handles 1-1 are symmetrically provided with convex columns 1-1-1; one side of the needle wing 3 is provided with a round hole I3-1, the edge of the round hole I3-1 is provided with a boss 3-1-1, and the other side is provided with a round hole II 3-2; two concave holes 4-2 are symmetrically arranged on the two outer side planes of the needle seat 4.

The upper end surface of the sheath 1 is a concave cambered surface 1-3, the sheath 1 is turned upwards along a crease 5 to 180 degrees and is attached to the cambered surface of the upper end of the needle seat 4, the handles 1-1 are arranged on two sides of the needle seat 4, and the convex columns 1-1-1 on the inner sides of the two handles 1-1 are respectively clamped on the concave holes 4-2 on the outer sides of the needle seat 4 to form clamping connection.

The sheath 1 is of a U-shaped structure with a hollow inner side, a clamping groove 1-2 is arranged on the inner side of the sheath 1, a symmetrical small claw 1-2-1 is arranged on the inner wall of the clamping groove 1-2 corresponding to the handle 1-1, and the two handles 1-1 are oppositely kneaded inwards to adjust the opening and closing gap between the two small claws 1-2-1; the sheath 1 is turned downwards to 90 degrees along the crease 5, the steel needle 2 is clamped in the clamping groove 1-2 between the two small claws 1-2-1, and the minimum space enclosed between the two small claws 1-2-1 is larger than the outer diameter of the steel needle 2.

When the two sides of the needle wing 3 are folded upwards relatively, the lug boss 3-1-1 can be embedded into the round hole II 3-2 to form clamping connection.

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

When the medical needle holder is used, a medical worker firstly pinches two handles 1-1 on a sheath 1, at the moment, the relative gap between the two symmetrical small claws 1-2-1 is increased, the sheath 1 is turned upwards along a crease 5, a steel needle 2 passes through the gap between the two small claws 1-2-1 and is separated from the sheath 1, the sheath 1 is continuously turned upwards until the concave arc surface of the upper end surface of the sheath 1 is attached to the upper end surface of a needle seat 4, and at the moment, convex columns 1-1-1 on the inner sides of the two handles 1-1 on the sheath 1 are clamped with concave holes 4-2 on the outer sides of the needle seat 4; then, the medical staff upwards folds the two sides of the needle wing 3, the folded needle wing 3 is pinched by hands to puncture the transfusion port, and the boss 3-1-1 on the needle wing 3 is embedded into the round hole II 3-2 to play a role in positioning, so that the needle wings on the two sides are prevented from sliding relatively when being folded for puncturing, and the puncturing effect is prevented from being influenced.

After infusion is finished, the steel needle 2 is pulled out of an infusion port, the sheath 1 is reversely turned over to the position of the steel needle 2, the two handles 1-1 on the sheath 1 are pinched, the relative gap between the small claws 1-2-1 is increased, so that the steel needle 2 enters the space between the two small claws 1-2-1 and is placed in the clamping groove 1-2 on the inner side of the sheath 1, the two handles 1-1 are released, the relative gap between the small claws 1-2-1 is reduced, the steel needle 2 is contained in the sheath 1, the steel needle 2 is effectively prevented from sliding out of the sheath 1, and accidental injury caused by acupuncture is avoided.

Claims

1. The utility model provides a special needle of implanted device of dosing with collapsible needle tubing protective sheath, includes sheath (1), steel needle (2), needle wing (3), needle file (4), sheath (1), needle wing (3), needle file (4) are integrated into one piece, are flexonics between sheath (1) and needle file (4), and the junction is equipped with crease (5), its characterized in that: the two outer sides of the sheath (1) are symmetrically provided with a handle (1-1), and the inner sides of the two handles (1-1) are symmetrically provided with convex columns (1-1-1); a round hole I (3-1) is formed in one side of the needle wing (3), a boss (3-1-1) is arranged at the edge of the round hole I (3-1), and a round hole II (3-2) is formed in the other side of the round hole I; concave holes (4-2) are symmetrically formed in two outer side planes of the needle seat (4).

2. The needle with the foldable needle cannula protecting sleeve special for the implanted drug delivery device as claimed in claim 1, wherein: the upper end surface of the sheath (1) is a concave arc surface (1-3), the sheath (1) is turned upwards to 180 degrees along a crease (5) and is attached to the arc surface at the upper end of the needle seat (4), the handles (1-1) are arranged on two sides of the needle seat (4), and the convex columns (1-1-1) at the inner sides of the two handles (1-1) are respectively clamped on the concave holes (4-2) at the outer side of the needle seat (4) to form clamping connection.

3. The needle with the foldable needle cannula protecting sleeve special for the implanted drug delivery device as claimed in claim 1, wherein: the sheath (1) is of a U-shaped structure with a hollow inner side, a clamping groove (1-2) is arranged on the inner side of the sheath (1),

the inner wall of the clamping groove (1-2) corresponding to the handle (1-1) is provided with a symmetrical small claw (1-2-1), and the two handles (1-1) are oppositely and inwardly kneaded to adjust the opening and closing gap between the two small claws (1-2-1); the sheath (1) is turned downwards to 90 degrees along the crease (5), the steel needle (2) is clamped in the clamping groove (1-2) between the two small claws (1-2-1), and the minimum enclosed space between the two small claws (1-2-1) is larger than the outer diameter of the steel needle (2).

4. The needle with the foldable needle cannula protecting sleeve special for the implanted drug delivery device as claimed in claim 1, wherein: when the two sides of the needle wing (3) are folded upwards relatively, the lug boss (3-1-1) can be embedded into the round hole II (3-2) to form clamping connection.