CN219307588U

CN219307588U - Needle cylinder connecting piece with double-lock structure

Info

Publication number: CN219307588U
Application number: CN202223069686.9U
Authority: CN
Inventors: 卢伟成; 卢伟业
Original assignee: Shenzhen Kaideqi Technology Co ltd
Current assignee: Shenzhen Kaideqi Technology Co ltd
Priority date: 2022-11-19
Filing date: 2022-11-19
Publication date: 2023-07-07
Anticipated expiration: 2032-11-19

Abstract

The utility model discloses a needle cylinder connecting piece with a double-lock structure, which comprises a needle cylinder, a piston assembly, a needle head, a locking protection sleeve and a connector, wherein the piston assembly is arranged in the needle cylinder, the needle head is arranged at the upper end of the needle cylinder, the locking protection sleeve is arranged above the needle head, and the connector is arranged at the top end of the needle cylinder. This locking protective sheath carries out the centre gripping through holding ring to connection base and connector junction, carries out the centre gripping to the holding ring outside through the clamp, locks and relaxs the clamp by the butterfly screw that sets up on the clamp to reach and consolidate and protect connection base and connector junction, the protection before the rethread needle pipe cover is used the needle tubing, prevent that the syringe from leading to the fact the rupture in the process of taking, the internal thread that this connector set up through sleeve body inner wall and the external screw thread that connection base external surface set up interlock mutually, constitute threaded connection, avoided vertical pulling force and caused the condition that syringe needle and cylinder drop.

Description

Needle cylinder connecting piece with double-lock structure

Technical Field

The utility model relates to the technical field of medical appliances, in particular to a needle cylinder connecting piece with a double-lock structure.

Background

Syringes are a common medical device and this process of drawing, injecting a gas or liquid through a needle is called injection. The injector consists of a needle cylinder with a small hole at the front end and a matched piston core rod, and is used for injecting a small amount of liquid or injecting the liquid into areas inaccessible to other methods or extracting the liquid or gas from the places, wherein the liquid or gas is sucked from the small hole at the front end of the needle cylinder when the core rod is extracted, the liquid or gas is extruded when the core rod is pushed in, and the needle cylinder is connected with the needle cylinder by a needle cylinder connecting piece, so that the needle cylinder can be mounted on the top of the needle cylinder by the needle cylinder connecting piece, and the normal use of the injector is achieved.

In the prior art, a syringe connecting piece on the market is used for connecting a syringe in a sleeved mode to the top of the syringe, but in the case that the syringe is too strong in use or is not matched with an injection object, the syringe and the syringe are easy to fall off, so that the injection process is influenced, and therefore, the syringe connecting piece with a double-lock structure is proposed.

Disclosure of Invention

The utility model aims to provide a syringe connecting piece with a double-lock structure, which solves the problems that in the prior art, most of the existing syringe connecting pieces are used for connecting a syringe in a sleeved mode to the top of the syringe, but the syringe and the syringe are easy to fall off under the condition that the syringe is too strong in use or is not matched with an injection object, so that the injection process is influenced.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a cylinder connecting piece with double lock structure, includes cylinder, piston assembly, syringe needle, locking protective sheath and connector, the inside of cylinder is provided with piston assembly, and the upper end of cylinder is provided with the syringe needle, the top of syringe needle is provided with locking protective sheath, and the top of cylinder is provided with the connector, locking protective sheath includes grip ring, needle pipe box, clamp and butterfly screw, and the top of grip ring is provided with the needle pipe box, the outside middle part of grip ring is encircleed there is the clamp, and the both ends junction of clamp is provided with the butterfly screw.

Preferably, an external thread is arranged at the outer part of one end of the needle tube sleeve, and the needle tube sleeve is connected to the inner part of the clamping ring through the external thread.

Preferably, the clamp is sleeved on the outer periphery of the clamping ring, and the clamp locks and loosens the clamping ring through butterfly screws.

Preferably, the needle cylinder comprises a cylinder body, a cylinder edge and scale marks, the lower end edge of the cylinder body is provided with the cylinder edge, and the outer surface of the cylinder body is provided with the scale marks.

Preferably, the piston assembly comprises a piston rod, a piston head and a piston handle, the top end of the piston rod is provided with the piston head, and the lower tail end of the piston rod is provided with the piston handle.

Preferably, the needle head comprises a needle tube, a pintle and a connecting base, the pintle is sleeved at the lower end of the needle tube, and the connecting base is arranged at the lower end of the pintle.

Preferably, the connecting base is a cylindrical pipe body with a hollow inside, and the external surface of the connecting base is provided with external threads.

Preferably, the connector comprises a sleeve body and internal threads, and the inner wall of the sleeve body is provided with the internal threads.

Compared with the prior art, the utility model has the beneficial effects that: this cylinder connecting piece with double-lock structure is provided with locking protective sheath and connector, and this locking protective sheath is through the grip ring to connecting base and connector junction centre gripping, carries out the centre gripping to the grip ring outside through the clamp, locks and relaxs the clamp by the butterfly screw that sets up on the clamp to reach and consolidate and protect connecting base and connector junction, the rethread needle pipe cover is to the protection before the needle tubing uses, prevents that the syringe from causing the rupture in the process of taking.

The connector is meshed with the external threads arranged on the outer surface of the connecting base through the internal threads arranged on the inner wall of the sleeve body, so that the connecting base and the connector form threaded connection, the condition that a needle head and a needle cylinder fall off due to vertical pulling force is avoided, and the locking effect is improved for the connection of the needle head and the needle cylinder.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a schematic perspective view of the present utility model;

FIG. 3 is a schematic view of the structure of the syringe of the present utility model;

fig. 4 is a schematic structural view of a locking protection sleeve according to the present utility model.

In the figure: 1. a needle cylinder; 101. a cylinder; 102. a barrel rim; 103. scale marks; 2. a piston assembly; 201. a piston rod; 202. a piston head; 203. a piston handle; 3. a needle; 301. a needle tube; 302. a pintle; 303. the base is connected; 4. a locking protective sleeve; 401. a clamping ring; 402. a needle cannula sleeve; 403. a clamp; 404. a butterfly screw; 5. a connector; 501. a sleeve body; 502. and (5) an internal thread.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, the present utility model provides a technical solution: the utility model provides a cylinder connecting piece with double lock structure, including cylinder 1, piston assembly 2, syringe needle 3, locking protective sleeve 4 and connector 5, the inside of cylinder 1 is provided with piston assembly 2, and the upper end of cylinder 1 is provided with syringe needle 3, the top of syringe needle 3 is provided with locking protective sleeve 4, and the top of cylinder 1 is provided with connector 5, locking protective sleeve 4 includes grip ring 401, needle tubing cover 402, clamp 403 and butterfly screw 404, and the top of grip ring 401 is provided with needle tubing cover 402, the outside middle part of grip ring 401 is encircleed and is had clamp 403, and the both ends junction of clamp 403 is provided with butterfly screw 404, the one end outside of needle tubing cover 402 is provided with the external screw thread, and needle tubing cover 402 passes through external screw thread connection in grip ring 401 inside, clamp 403 cup joints in the outside of grip ring 401 a week, and clamp 403 locks and loosens grip ring 401 through butterfly screw 404. This locking protective sheath 4 carries out the centre gripping through grip ring 401 to the junction of connection base 303 and connector 5, carries out the centre gripping through clamp 403 to grip ring 401 outside, locks and relaxs clamp 403 by the butterfly screw 404 that sets up on the clamp 403 to reach and consolidate and protect the junction of connection base 303 and connector 5, the protection before the rethread needle tube cover 402 carries out the needle tubing 301 to use, prevents that the syringe from causing the rupture in the process of taking.

The needle cylinder 1 comprises a cylinder body 101, a cylinder edge 102 and graduation marks 103, the lower end edge of the cylinder body 101 is provided with the cylinder edge 102, the outer surface of the cylinder body 101 is provided with the graduation marks 103, a piston assembly 2 comprises a piston rod 201, a piston head 202 and a piston handle 203, the top end of the piston rod 201 is provided with the piston head 202, the lower end of the piston rod 201 is provided with the piston handle 203, the needle head 3 comprises a needle tube 301, a needle bolt 302 and a connecting base 303, the lower end of the needle tube 301 is sleeved with the needle bolt 302, the lower end of the needle bolt 302 is provided with the connecting base 303, the connecting base 303 is a cylindrical tube body with a hollow inside, and the outer surface of the connecting base 303 is provided with external threads.

The connector 5 comprises a sleeve body 501 and an internal thread 502, the internal thread 502 is arranged on the inner wall of the sleeve body 501, the connector 5 is meshed with the external thread arranged on the outer surface of the connecting base 303 through the internal thread 502 arranged on the inner wall of the sleeve body 501, so that the connecting base 303 and the connector 5 form threaded connection, the situation that the needle head 3 and the needle cylinder 1 fall off due to vertical pulling force is avoided, and the locking effect is improved for the connection of the needle head 3 and the needle cylinder 1.

Working principle: for the syringe connecting piece with the double-lock structure, firstly, a user connects the needle head 3 with the syringe 1, the internal thread 502 arranged on the inner wall of the sleeve body 501 of the connector 5 is meshed with the external thread arranged on the outer surface of the connecting base 303, so that the connecting base 303 and the connector 5 form the connecting base 303 in threaded connection, the clamping ring 401 of the locking protection sleeve 4 clamps the connecting position of the connecting base 303 and the connector 5, the clamping ring 401 is clamped by the clamping ring 403, the clamping ring 403 is locked and loosened by the butterfly screw 404 arranged on the clamping ring 403, the connecting position of the connecting base 303 and the connector 5 is reinforced and protected, the needle tube 301 is protected before being used by the needle tube sleeve 402, and the syringe is prevented from being broken in the taking process, so that the whole use process of the syringe connecting piece with the double-lock structure is completed.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a cylinder connecting piece with double lock structure, includes cylinder (1), piston assembly (2), syringe needle (3), locking protective sheath (4) and connector (5), its characterized in that: the inside of cylinder (1) is provided with piston subassembly (2), and the upper end of cylinder (1) is provided with syringe needle (3), the top of syringe needle (3) is provided with locking protective sleeve (4), and the top of cylinder (1) is provided with connector (5), locking protective sleeve (4) are including grip ring (401), needle tubing cover (402), clamp (403) and butterfly screw (404), and the top of grip ring (401) is provided with needle pipe cover (402), the outside middle part of grip ring (401) is encircleed and is had clamp (403), and the both ends junction of clamp (403) is provided with butterfly screw (404).

2. The syringe connection with double lock structure of claim 1, wherein: an external thread is arranged outside one end of the needle tube sleeve (402), and the needle tube sleeve (402) is connected inside the clamping ring (401) through the external thread.

3. The syringe connection with double lock structure of claim 1, wherein: the clamp (403) is sleeved on the periphery of the outer portion of the clamping ring (401), and the clamp (403) locks and releases the clamping ring (401) through butterfly screws (404).

4. The syringe connection with double lock structure of claim 1, wherein: the needle cylinder (1) comprises a cylinder body (101), a cylinder edge (102) and scale marks (103), the lower end edge of the cylinder body (101) is provided with the cylinder edge (102), and the outer surface of the cylinder body (101) is provided with the scale marks (103).

5. The syringe connection with double lock structure of claim 1, wherein: the piston assembly (2) comprises a piston rod (201), a piston head (202) and a piston handle (203), the top end of the piston rod (201) is provided with the piston head (202), and the lower tail end of the piston rod (201) is provided with the piston handle (203).

6. The syringe connection with double lock structure of claim 1, wherein: the needle head (3) comprises a needle tube (301), a needle plug (302) and a connecting base (303), the lower end of the needle tube (301) is sleeved with the needle plug (302), and the lower end of the needle plug (302) is provided with the connecting base (303).

7. The syringe connection with double lock of claim 6, wherein: the connecting base (303) is a cylindrical pipe body with a hollow inside, and external threads are arranged on the outer surface of the connecting base (303).

8. The syringe connection with double lock structure of claim 1, wherein: the connector (5) comprises a sleeve body (501) and internal threads (502), and the internal wall of the sleeve body (501) is provided with the internal threads (502).