CN201524317U

CN201524317U - Semiautomatic buffering injection pen

Info

Publication number: CN201524317U
Application number: CN200920310772XU
Authority: CN
Inventors: 李修何
Original assignee: GANSU CHENGJI BIOPHARMACEUTICAL CO Ltd
Current assignee: GANSU CHENGJI BIOPHARMACEUTICAL CO Ltd
Priority date: 2009-09-18
Filing date: 2009-09-18
Publication date: 2010-07-14
Anticipated expiration: 2019-09-18

Abstract

The utility model discloses a semiautomatic buffering injection pen. The pen comprises a pen type injection pen main body composed of a housing and a turning sleeve in threaded connection, wherein a push rod coaxial with an inner chamber is arranged in the inner chamber of the main body, an inner end head of the push rod is used to connect with a piston of a medicated cassette bottle when loading, buttons and a buckle body are sleeved between the push rod and the housing from top to bottom, the press end sockets of the push rod and the button extend out of an end round opening of the housing, the cross section of a lower round opening of the button is in a shape of an inclined opening, bosses are formed on the inner circumference of the housing, a clamping hook is arranged at the upper end of the buckle body and stretches to the lower round opening of the button when loading, beads are arranged on the outer circumference at the lower end of the buckle body, small springs are connected between bosses and buttons, large springs are connected between beads and bosses, a needle hole is formed on an end socket of the turning sleeve, and a needle head protective sleeve is arranged on the needle hole. The injection pen is suitable for the cassette bottle with the piston, and has the advantages of convenient use and portability.

Description

A kind of semi-automatic buffering injection pen

Technical field

This utility model belongs to technical field of medical instruments, relates to a kind of semi-automatic buffering injection pen.

Background technology

Existing injection needle mainly adopts injection manually, also have the full-automatic cassette bottle injection pen that some use the prepackage medicinal liquid in the market, but its package assembly complexity, the cost of manufacture height, can not control into medicine speed, influence and large batch ofly used and promote.

Summary of the invention

The purpose of this utility model provides a kind of semi-automatic buffering injection pen, has solved complex structure, the influence problem of using in enormous quantities.

The technical scheme that this utility model adopted is, a kind of semi-automatic buffering injection pen, comprise the pen type injection pen main body of forming by being threaded by shell and rotation set, the inner chamber of this main body is provided with co-axial push rod, piston with pastille cassette bottle when the inner termination of push rod is used for powder charge is connected, between push rod and shell, be set with button and button from top to bottom, wherein push rod and button pushes the termination round mouth that shell is all stretched out in the termination, the cross section of the lower circle port of button is the angle shape, the inner periphery of shell is provided with boss, the upper end of button is provided with grab, grab puts in the lower circle port of button when powder charge, the lower end excircle of button is provided with fin, is connected with little spring between boss and the button, is connected with big spring between fin and the boss; The termination of rotation set has pin hole, and this pin hole is provided with protective sleeve of syringe needle.

Semi-automatic buffering injection pen of the present utility model, its feature also is:

Described pastille cassette bottle is selected the cassette bottle of band movable piston for use.

The aseptic twolip injection needle of injection pen of the present utility model and disposable use, the supporting use of pastille cassette bottle are used for the intramuscular injection medicinal liquid, and be simple in structure, easy to use, is convenient to promote.

Description of drawings

Fig. 1 is this utility model apparatus structure sketch map (state before using);

Package assembly sketch map when Fig. 2 is the use of this utility model device.

Among the figure, 1. push rod, 2. button, 3. shell, 4. button, 5. rotation set, 6. little spring, 7. big spring, 8. grab, 9. protective sleeve of syringe needle, 10. boss, 11. fins, 12. pastille cassette bottles, 13. twolip injection needles.

The specific embodiment

Below in conjunction with the drawings and specific embodiments this utility model is elaborated.

As Fig. 1, Fig. 2, semi-automatic buffering injection pen structure of the present utility model is, comprise the pen type injection pen main body of forming by being threaded by shell 3 and rotation set 5, the inner chamber of this main body is provided with co-axial push rod 1, piston with pastille cassette bottle 12 when the inner termination of push rod is used for powder charge is connected, between push rod 1 and shell 3, be set with button 2 from top to bottom, button 4, wherein push rod 1 and button 2 pushes the termination round mouth that shell 3 is all stretched out in the termination, the cross section of the lower circle port of button 2 is the angle shape, the inner periphery of shell 3 is provided with boss 10, the upper end of button 4 is provided with grab 8, grab 8 puts in the lower circle port of button 2 when powder charge, the lower end excircle of button 4 is provided with fin 11, is connected with little spring 6 between boss 10 and the button 2, is connected with big spring 7 between fin 11 and the boss 10; The termination of rotation set 5 has pin hole, and this pin hole is provided with protective sleeve of syringe needle 9.Described pastille cassette bottle 9 is selected the cassette bottle of the band movable piston of 1mL or 2mL for use, and pastille cassette bottle 12 reaches the aseptic twolip injection needle 13 of disposable use that is slidingly matched with the cassette bottleneck and is used.

With reference to Fig. 1, Fig. 2, the using method of this utility model device is:

Shell 3 and rotation set 5 rotations are thrown off, pushes compression big spring 7 on the button 2 is stuck on the boss 10 until grab 8, the piston and the push rod 1 that will install the pastille cassette bottle 12 of twolip injection needle 13 again connect, to shift the top onto on the push rod 1, again rotation set 5 is enclosed within on twolip injection needle 13 and the pastille cassette bottle 12 to tighten and connects with shell 3; During injection, with the light press contacts of pin hole injection site, press button 2 with hands, inwardly draw in when grab 8 is subjected to the extruding of button 2 lower circle ports with boss 10 and throw off, effect lower fastener 4 promotion pastille cassette bottles 12 at big spring 7 move down fast simultaneously, syringe needle is thrown skin into, and the reuse hands is pushed push rod 1 and promoted piston with in the propelling of the medicinal liquid in the pastille cassette bottle 12 human body, finishes injection operation.

Rely on the automatic inserting needle of spring when this utility model device uses, manually with the hand propelled inserting needle medicinal liquid is pushed human body then, can finish automatic inserting needle and manually injection, it is simple to reset when reusing, and the pastille cassette is bottled to be unloaded conveniently.This device is applicable to the cassette bottle of 1mL, 2mL, and is easy to use, can carry.

Claims

1. semi-automatic buffering injection pen, it is characterized in that: comprise the pen type injection pen main body of forming by being threaded by shell (3) and rotation set (5), the inner chamber of this main body is provided with co-axial push rod (1), piston with pastille cassette bottle (12) when the inner termination of push rod is used for powder charge is connected, between push rod (1) and shell (3), be set with button (2) and button (4) from top to bottom, wherein push rod (1) and button (2) pushes the termination round mouth that shell (3) is all stretched out in the termination, the cross section of the lower circle port of button (2) is the angle shape, the inner periphery of shell (3) is provided with boss (10), the upper end of button (4) is provided with grab (8), grab (8) puts in the lower circle port of button (2) when powder charge, the lower end excircle of button (4) is provided with fin (11), be connected with little spring (6) between boss (10) and the button (2), be connected with big spring (7) between fin (11) and the boss (10); The termination of rotation set (5) has pin hole, and this pin hole is provided with protective sleeve of syringe needle (9).

2. semi-automatic buffering injection pen according to claim 1 is characterized in that: described pastille cassette bottle (9) is selected the cassette bottle of band movable piston for use.