CN218552822U

CN218552822U - Safety puncture needle

Info

Publication number: CN218552822U
Application number: CN202220812111.2U
Authority: CN
Inventors: 张剑萍; 俞伶; 徐婷
Original assignee: First Affiliated Hospital of Zhejiang University School of Medicine
Current assignee: First Affiliated Hospital of Zhejiang University School of Medicine
Priority date: 2022-04-07
Filing date: 2022-04-07
Publication date: 2023-03-03
Anticipated expiration: 2032-04-07

Abstract

The utility model relates to the field of medical equipment, a safe type pjncture needle is disclosed, include: a base. The butterfly wing vertical needle comprises a butterfly wing part and a needle head, wherein the butterfly wing part is arranged at the top of the base, one end of the needle head is connected with the butterfly wing part, and the other end of the needle head penetrates out of the bottom of the base. The protective structure is a hollow structure at two ends and is arranged at the bottom of the base, and the needle head can be wrapped inside the protective structure. The driving structure is used for driving the protection structure to extend or contract so as to wrap the needle head inside or expose the needle head outside. The utility model discloses an increase a protector that can extend or contract in the syringe needle outside, under the condition that does not influence the syringe needle use, shelter from the syringe needle, can prevent that medical personnel from being stabbed by the syringe needle in operation process, cause the infection, improve the security.

Description

Safety puncture needle

Technical Field

The utility model relates to the field of medical equipment, concretely relates to safe type pjncture needle.

Background

PORTs, also referred to clinically as PORTs, are specialized infusion devices that are placed into the body to reduce the irritation of medication to the patient's blood vessels. It is divided into three parts: a non-traumatic needle (butterfly wing needle), a catheter which is arranged in subclavian vein, and an injection seat (port body) which is buried under the skin and connected with the transfusion needle. The injection seat is connected with a catheter inserted into subclavian vein to form a long-term vascular access which acts like a port and is called as a 'port of infusion'.

The butterfly wing needle used clinically comprises a butterfly wing and a vertical needle head, and the vertical needle head is embedded into a tube body in the middle of the butterfly wing.

In the process of clinical use, because the base of the transfusion port needs certain force when being punctured and pulled out, the reaction is easy to generate when the needle is pulled out after the puncture is finished, and medical personnel are easy to be punctured by the needle in the operation process to cause infection.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a safe type pjncture needle, this utility model can solve the problem that medical personnel who exists among the prior art is hindered by the needle-prick easily when pulling out the needle.

In order to achieve the above object, the utility model provides a safe type pjncture needle, include:

a base;

the butterfly wing vertical needle comprises a butterfly wing part and a needle head, the butterfly wing part is arranged at the top of the base, one end of the needle head is connected with the butterfly wing part, and the other end of the needle head penetrates out of the bottom of the base;

the protective structure is a hollow structure at two ends, is arranged at the bottom of the base and can wrap the needle head inside the protective structure;

the driving structure is used for driving the protection structure to extend or contract so as to wrap the needle head inside or expose the needle head outside.

The utility model discloses an increase a protector that can extend or contract in the syringe needle outside, under the condition that does not influence the syringe needle use, shelter from the syringe needle, can prevent that medical personnel from being stabbed by the syringe needle in operation process, cause the infection, improve the security.

Further, protective structure includes the protective sheath pipe, protective sheath pipe is cylindrical.

Further, the protective sleeve is made of flexible materials.

Further, the side wall of the protective sleeve is provided with a plurality of layers of folds.

Further, the protective sleeve is made of transparent materials.

Furthermore, the driving structure is a first spring, an accommodating space with an opening at the top is formed in the side wall of the protective sleeve, one end of the first spring is connected with the bottom of the base through the opening, and the other end of the first spring is connected with the inner wall of the bottom of the accommodating space.

Furthermore, safe type pjncture needle still includes limit structure, limit structure can carry on spacingly to the protective casing after once contracting and extending the action.

Further, limit structure includes telescopic link subassembly and spacing subassembly, telescopic link subassembly sets up in the accommodation space, its one end with the bottom of base is connected, the other end with accommodation space's bottom inner wall connection, spacing subassembly sets up telescopic link subassembly on the telescopic link subassembly, can carry on spacingly to the telescopic link subassembly after once contracting and extending action.

Further, spacing subassembly includes along the top telescopic link, middle telescopic link and the bottom telescopic link that protective sheath length direction cup jointed together step by step, wherein:

one end of the top telescopic rod is connected with the bottom of the base, and the other end of the top telescopic rod is provided with a first limiting bulge extending inwards;

the top of the middle telescopic rod is provided with a second limiting bulge extending outwards, the bottom of the middle telescopic rod is provided with a third limiting bulge extending inwards, and the second limiting bulge can be abutted against the first limiting bulge;

the top of bottom telescopic link has the spacing arch of the fourth of outside extension, the spacing arch of fourth can with the spacing protruding butt of third, the bottom of bottom telescopic link with accommodation space's bottom inner wall is connected.

Furthermore, the limiting assembly comprises a limiting block, a second spring and a limiting hole, the top telescopic rod and the middle telescopic rod are respectively close to the bottoms of the top telescopic rod and the middle telescopic rod and are respectively arranged above the first limiting bulge and the third limiting bulge, one end of the second spring is connected with the inner wall of the mounting groove, and one side wall of the limiting block is connected with the other end of the second spring; the limiting holes are respectively formed in the middle telescopic rod and the bottom telescopic rod, are close to the respective tops of the middle telescopic rod and the bottom telescopic rod, and are positioned below the second limiting bulge and the fourth limiting bulge;

the bottom telescopic link with middle telescopic link is at the in-process of shrink the spacing arch of fourth and the spacing arch of second can with the stopper butt, and with its propelling movement extremely in the mounting groove, the bottom telescopic link with middle telescopic link is when accomplishing the shrink process and extend once more, the stopper can stretch into spacing downthehole, right the bottom telescopic link with middle telescopic link carries on spacingly.

Other features and advantages of the present invention will be described in detail in the detailed description which follows.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is a schematic view of an internal structure of a protective sleeve according to an embodiment of the present invention;

fig. 3 is a schematic diagram of a limiting structure in an embodiment of the present invention;

fig. 4 is a schematic diagram of an internal structure of a limiting structure according to an embodiment of the present invention.

Description of the reference numerals

1, a base; 21 a butterfly wing portion; 22 needles; 3 protecting the casing; 4 a first spring; 51, a top telescopic rod; 52 intermediate telescoping rods; 53 bottom telescopic rods; 54 a first stop protrusion; 55 a second limiting bulge; 56 a third limiting bulge; 57 a fourth limit projection; 61 a limiting block; 62 a second spring; 63 limiting the hole.

Detailed Description

The following describes in detail embodiments of the present invention. It should be understood that the description herein is provided for illustration and explanation of the invention and is not intended to limit the invention.

In the present invention, the use of the terms of orientation such as "upper and lower" in the case where no description is made to the contrary generally means the orientation in the assembled and used state. "inner and outer" refer to the inner and outer contours of the components themselves.

In order to achieve the above object, the present invention provides a safety puncture needle, as shown in fig. 1 to 4, comprising:

a base 1;

the butterfly wing vertical needle comprises a butterfly wing part 21 and a needle head 22, wherein the butterfly wing part 21 is arranged at the top of the base 1, one end of the needle head 22 is connected with the butterfly wing part 21, and the other end of the needle head penetrates out of the bottom of the base 1;

the protective structure is a hollow structure with two ends, is arranged at the bottom of the base 1 and can wrap the needle head 22 inside;

and a driving structure for driving the protection structure to expand or contract so as to wrap the needle 22 inside or expose the needle to the outside.

The utility model discloses an increase a protector that can extend or contract in syringe needle 22 outside, under the condition that does not influence syringe needle 22 and use, shelter from syringe needle 22, can prevent that medical personnel from being stabbed by syringe needle 22 in the operation process, cause the infection, improve the security.

In an alternative embodiment, the protective structure comprises a protective sleeve 3, the protective sleeve 3 being cylindrical. The protective sleeve 3 is made of transparent flexible materials. And has a plurality of folds in the side wall of the protective sleeve 3. Can improve the ductility of protective casing 3 on the one hand through the aforesaid setting, make its more smooth and easy at flexible in-process, on the other hand can make medical personnel see the condition of clear inside syringe needle, improves the operational safety nature.

In an alternative embodiment, the driving structure is a first spring 4, the side wall of the protective sleeve 3 has an accommodating space with an opening at the top, one end of the first spring 4 is connected with the bottom of the base 1 through the opening, and the other end is connected with the inner wall of the bottom of the accommodating space.

With the above arrangement, when the needle 22 is used, the protection sheath 3 is abutted against the base of the infusion port or the body of the patient, and the first spring 4 is deformed by force to contract, thereby driving the protection sheath 3 to contract. When extracting syringe needle 22, the atress of first spring 4 reduces to extend, and then drive protective sleeve 3 and extend, follow syringe needle 22 and rise in step, with syringe needle 22 separation inside, avoid medical personnel to be stabbed by syringe needle 22 in the operation process.

In an alternative embodiment, the safety puncture needle further comprises a limiting structure, and the limiting structure can limit the protective sleeve 3 after one contraction and extension action. Through rising the setting, will protect sleeve 3 to lock after the puncture is accomplished, can further improve the stability ability and the security of device.

Particularly, limit structure includes telescopic link subassembly and spacing subassembly, telescopic link subassembly sets up in the accommodation space, its one end with the bottom of base 1 is connected, the other end with accommodation space's bottom inner wall connection, spacing subassembly sets up telescopic link subassembly on the telescopic link subassembly, can carry on spacingly to the telescopic link subassembly after once contracting and extending action.

As shown in fig. 3 to 4, the limiting assembly includes a top telescopic rod 51, a middle telescopic rod 52 and a bottom telescopic rod 53 sleeved together step by step along the length direction of the protective sheath 3, wherein:

one end of the top telescopic rod 51 is connected with the bottom of the base 1, and the other end of the top telescopic rod is provided with a first limiting bulge 54 extending inwards;

the top of the middle telescopic rod 52 is provided with a second limiting bulge 55 extending outwards, the bottom of the middle telescopic rod is provided with a third limiting bulge 56 extending inwards, and the second limiting bulge 55 can be abutted with the first limiting bulge 54;

the top of the bottom telescopic rod 53 is provided with a fourth limiting protrusion 57 extending outwards, the fourth limiting protrusion 57 can be abutted against the third limiting protrusion 56, and the bottom of the bottom telescopic rod 53 is connected with the inner wall of the bottom of the accommodating space.

The limiting assembly comprises a limiting block 61, a second spring 62 and a limiting hole 63, the top telescopic rod 51 and the middle telescopic rod 52 are respectively close to the bottoms of the top telescopic rod and the middle telescopic rod and are respectively arranged above the first limiting bulge 54 and the third limiting bulge 56, mounting grooves are formed in the positions, above the first limiting bulge 54 and the third limiting bulge 56, one end of the second spring 62 is connected with the inner wall of the mounting groove, and one side wall of the limiting block 61 is connected with the other end of the second spring 62; the limiting holes 63 are respectively arranged on the top parts of the middle telescopic rod 52 and the bottom telescopic rod 53 and below the second limiting bulge 55 and the fourth limiting bulge 57;

bottom telescopic link 53 with middle telescopic link 52 is at the in-process of shrink fourth spacing arch 57 and second spacing arch 55 can with stopper 61 butt, and with its propelling movement to in the mounting groove, bottom telescopic link 53 with middle telescopic link 52 is when accomplishing the shrink process and extend again, stopper 61 can stretch into in the spacing hole 63, to bottom telescopic link 53 with middle telescopic link 52 carries on spacingly.

It should be noted that, in the state that the butterfly wing vertical needle is not used, the protection sleeve 3 is in the extending state, the length of the protection sleeve is longer than that of the needle 22, the first spring 4 inside the protection sleeve is also in the extending state, and the state of the limiting structure is shown in fig. 4. I.e. the intermediate telescopic rod 52 and the bottom telescopic rod 53 are in an unlocked state and can perform a retracting movement. So that it can follow the protective sleeve 3 for simultaneous retraction when the needle 22 is used.

Preferably, as shown in fig. 4, the side wall of the stopper 61 has a first slope with a top length greater than a bottom length thereof, and the tops of the second and

fourth stopper protrusions

55 and 57 have a second slope. Through the arrangement, the fourth limiting protrusion 57 and the second limiting protrusion 55 of the bottom telescopic rod 53 and the middle telescopic rod 52 are pushed into the mounting groove by the aid of the cooperation of the second inclined surface and the first inclined surface in the contraction process of the bottom telescopic rod and the middle telescopic rod, and the situation that the limiting block 61 extends into the limiting hole 63 in the contraction process of the device to cause the situation that the device cannot normally extend to protect the needle head 22 after puncture is completed is avoided.

In a preferred embodiment, the inner walls of the middle extension rod 52 and the bottom extension rod 53 are provided with grooves having inclined surfaces, and the depth of the grooves gradually increases from the bottom of the middle extension rod 52 and the bottom extension rod 53 to the limiting hole 63. Through the above arrangement, the design of the groove can be used for guiding the limiting block 61, so that the middle telescopic rod 52 and the bottom telescopic rod 53 can extend into the limiting hole 63 more timely during the process of completing the extension after puncture, and the stability of the device is further improved.

The above detailed description describes the preferred embodiments of the present invention, but the present invention is not limited to the details of the above embodiments, and the technical idea of the present invention can be within the scope of the present invention, and can be right to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.

It should be noted that the various features described in the foregoing embodiments may be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention does not separately describe various possible combinations.

In addition, various embodiments of the present invention can be combined arbitrarily, and the disclosed content should be regarded as the present invention as long as it does not violate the idea of the present invention.

Claims

1. A safety puncture needle is characterized by comprising:

a base (1);

the butterfly wing vertical needle comprises a butterfly wing part (21) and a needle head (22), wherein the butterfly wing part (21) is arranged at the top of the base (1), one end of the needle head (22) is connected with the butterfly wing part (21), and the other end of the needle head penetrates out of the bottom of the base (1);

the protective structure is a hollow structure with two ends, is arranged at the bottom of the base (1) and can wrap the needle head (22) inside the protective structure;

the driving structure is used for driving the protection structure to expand or contract so as to wrap the needle (22) inside or expose the needle to the outside.

2. Safety puncture needle according to claim 1, characterized in that the protective structure comprises a protective sleeve (3), the protective sleeve (3) being cylindrical.

3. Safety puncture needle according to claim 2, characterized in that the protective sheath (3) is made of a flexible material.

4. Safety puncture needle according to claim 3, characterized in that the protective sheath (3) has a plurality of folds in its side wall.

5. Safety puncture needle according to claim 4, characterized in that the protective sheath (3) is made of transparent material.

6. The safety puncture needle according to claim 5, wherein the driving structure is a first spring (4), the side wall of the protective sleeve (3) is provided with a containing space with an opening at the top, one end of the first spring (4) is connected with the bottom of the base (1) through the opening, and the other end of the first spring is connected with the inner wall of the bottom of the containing space.

7. The safety puncture needle according to claim 6, further comprising a limiting structure, wherein the limiting structure can limit the protective sleeve (3) after one contraction and extension action.

8. The safety puncture needle according to claim 7, wherein the limiting structure comprises a telescopic rod assembly and a limiting assembly, the telescopic rod assembly is arranged in the accommodating space, one end of the telescopic rod assembly is connected with the bottom of the base (1), the other end of the telescopic rod assembly is connected with the inner wall of the bottom of the accommodating space, and the limiting assembly is arranged on the telescopic rod assembly and can limit the telescopic rod assembly after one contraction and expansion action.

9. The safety puncture needle according to claim 8, wherein the limiting assembly comprises a top telescopic rod (51), a middle telescopic rod (52) and a bottom telescopic rod (53) which are sleeved together in a stepwise manner along the length direction of the protective sheath (3), wherein:

one end of the top telescopic rod (51) is connected with the bottom of the base (1), and the other end of the top telescopic rod is provided with a first limiting bulge (54) extending inwards;

the top of the middle telescopic rod (52) is provided with a second limiting bulge (55) extending outwards, the bottom of the middle telescopic rod is provided with a third limiting bulge (56) extending inwards, and the second limiting bulge (55) can abut against the first limiting bulge (54);

the top of bottom telescopic link (53) has outside extension's fourth spacing arch (57), fourth spacing arch (57) can with third spacing arch (56) butt, the bottom of bottom telescopic link (53) with accommodation space's bottom inner wall is connected.

10. The safety type puncture needle according to claim 9, wherein the limiting component comprises a limiting block (61), a second spring (62) and a limiting hole (63), the top telescopic rod (51) and the middle telescopic rod (52) are respectively provided with a mounting groove near the respective bottoms and above the first limiting bulge (54) and the third limiting bulge (56), one end of the second spring (62) is connected with the inner wall of the mounting groove, and one side wall of the limiting block (61) is connected with the other end of the second spring (62); the limiting holes (63) are respectively formed in the middle telescopic rod (52) and the bottom telescopic rod (53) close to the tops of the middle telescopic rod and the bottom telescopic rod and are located below the second limiting protrusion (55) and the fourth limiting protrusion (57);

bottom telescopic link (53) with middle telescopic link (52) are at the in-process of shrink fourth spacing arch (57) and second spacing arch (55) can with stopper (61) butt, and with its propelling movement extremely in the mounting groove, bottom telescopic link (53) with middle telescopic link (52) are when accomplishing the shrink process and extend again, stopper (61) can stretch into in spacing hole (63), right bottom telescopic link (53) with middle telescopic link (52) are spacing.