CN212235509U

CN212235509U - Mini one-key pumping injector

Info

Publication number: CN212235509U
Application number: CN202020309597.9U
Authority: CN
Inventors: 张媛媛; 晏毅; 高晟
Original assignee: Second Affiliated Hospital of Kunming Medical University
Current assignee: Second Affiliated Hospital of Kunming Medical University
Priority date: 2020-03-13
Filing date: 2020-03-13
Publication date: 2020-12-29
Anticipated expiration: 2030-03-13

Abstract

The utility model discloses a mini one-key pumpback injector, including injector main part, the outer wall fixed mounting of injector main part has the side ear, the bottom fixed mounting of injector main part has the injector head, the inside slip of injector main part is provided with the piston, the top fixed surface of piston installs second spring fixing base, the inside fixed mounting of injector main part has first spring fixing base, the through-hole has been seted up at the middle part of first spring fixing base. Mini one key pumpback annotates ware, be equipped with side ear, first spring fixing base, second spring fixing base, first coil spring, piston, cylinder, injection pole, second coil spring, fixture block, draw-in groove and spacing slider, can realize one key pumpback, convenient operation to, distinctive structural design can make operating personnel point difficult slippage when the operation, brings better use prospect.

Description

Mini one-key pumping injector

Technical Field

The utility model relates to the technical field of medical equipment, in particular to mini one key pumpback annotates ware.

Background

Intravenous bolus, which is a method of administering small amounts or a single type of drug by intravenous injection using a bolus injector. Present injector has certain drawback when using, the top department of injector main part is equipped with two sets of protrusions, the angle of crossing contained angle between this protrusion and the injector main part is mostly 90, during the injection operation, forefinger and middle finger tripe up, put up in the below of protrusion, the thumb tripe is down, put up in the top of pushing the handle, thumb and forefinger, the middle finger moves towards, control pushes the handle, push pole and piston motion, thereby accomplish the injection, in this operation process, easy slippage when forefinger and middle finger put, certain adverse effect has, in addition, it can the one-hand completion to inject the operation, and the pumpback then needs both hands common operation, the operation is comparatively troublesome, for this reason, we propose a mini one-key pumpback injector.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides a mini key pumpback annotates ware, can effectively solve the problem in the background art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

mini one-key pumpback injector, including injector main part, the outer wall fixed mounting of injector main part has the side ear, the bottom fixed mounting of injector main part has the injection head, the inside of injector main part slides and is provided with the piston, the top external surface fixed mounting of piston has the second spring fixing base, the inside fixed mounting of injector main part has first spring fixing base, the through-hole has been seted up at the middle part of first spring fixing base, the top of injector main part is provided with the push handle, the bottom external surface fixed mounting of push handle has the connecting rod, the bottom fixed mounting of connecting rod has the cylinder, the bottom external surface fixed mounting of cylinder has the injection pole, the one end of injection pole runs through the through-hole of seting up in the middle part of first spring fixing base and is connected with the top external surface fixed mounting of second spring fixing base.

Preferably, the outer wall of the injector main body is provided with a scale label, the scale label is printed with capacity scales, an adhesive is arranged between the injector main body and the scale label, the outer wall of the injector main body is fixedly connected with the scale label through a super glue, and the transparency of the injector main body and the transparency of the scale label are both 85% -92%.

Preferably, a first spiral spring is arranged between the first spring fixing seat and the second spring fixing seat, one end of the first spiral spring is fixedly installed at the bottom of the first spring fixing seat through welding, the other end of the first spiral spring is fixedly installed at the top of the second spring fixing seat through welding, and the injection rod is located inside the first spiral spring.

Preferably, the outer wall of the injector main body is provided with a clamping groove, the middle of the cylinder is provided with a groove, a second spiral spring is fixedly mounted inside the groove, and one end of the second spiral spring is fixedly provided with a clamping block.

Preferably, a limiting sliding block is arranged in a through hole formed in the middle of the first spring fixing seat, a limiting sliding groove is formed in the outer wall of the injection rod, the number of the limiting sliding blocks and the number of the limiting sliding grooves are two, and the limiting sliding blocks are arranged in the limiting sliding grooves in a sliding mode.

Preferably, the number of the side ears is two, the side ears are symmetrically distributed in a straight line shape, a strong glue is arranged between the side ears and the injector main body, the outer wall of the injector main body is fixedly connected with the side ears through the strong glue, and the side ears are close to the top end of the injector main body.

Compared with the prior art, the utility model discloses following beneficial effect has: the mini one-key withdrawing injector is characterized in that through the design of the side lug, the first spring fixing seat, the second spring fixing seat, the first spiral spring, the piston, the cylinder, the withdrawing rod, the second spiral spring, the clamping block, the clamping groove and the limiting sliding block, the middle finger and the index finger are bent to be hook-shaped and pass through a hole site in the middle of the side lug and are not easy to slip, the first spring fixing seat, the second spring fixing seat and the first spiral spring are matched with the piston, the second spring fixing seat and the piston are driven to move downwards through the withdrawing rod in the withdrawing operation, the first spring fixing seat is kept still, so that the first spiral spring is stressed and stretched, therefore, the withdrawing operation can be automatically completed by utilizing the resilience acting force of the first spiral spring, the cylinder, the second spiral spring, the clamping block and the clamping groove are designed, the piston is controlled to move downwards through the withdrawing rod in the withdrawing operation, connecting rod and cylinder syntropy, when fixture block and draw-in groove counterpoint, the second coil spring is automatic to kick-back, promote in the fixture block card goes into the draw-in groove, can make first coil spring keep tensile state, need not the hand and continuously exert oneself, during the pumpback, press in the bellied fixture block of injector main part outer wall, no longer play the locking effect, first coil spring is automatic to kick-back, the pulling piston rebound, accomplish a key pumpback, do benefit to people and use, whole mini key pumpback ware simple structure, high durability and convenient operation, the effect of use is better for traditional mode.

Drawings

Fig. 1 is a front view of the mini one-key withdrawal plunger of the present invention.

Fig. 2 is a schematic view of the internal structure of the mini one-key pumping injector of the present invention.

Fig. 3 is an enlarged view of a in fig. 2 of the mini one-key pumpback injector of the present invention.

Fig. 4 is an enlarged view of B of fig. 2 of the mini one-key withdrawal plunger of the present invention.

Fig. 5 is a schematic view of the internal structure of the cylinder in the mini one-key retraction injector of the present invention.

Fig. 6 is a schematic structural view of the first spring fixing seat and the plunger rod of the mini one-key pumping plunger of the present invention.

In the figure: 1. a bolus injector body; 2. a lateral ear; 3. a push injection head; 4. pushing the handle; 5. a connecting rod; 6. a first spring holder; 7. a first coil spring; 8. a push injection rod; 9. a cylinder; 10. a clamping block; 11. a card slot; 12. a second spring fixing seat; 13. a piston; 14. a groove; 15. a second coil spring; 16. and a limiting sliding block.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

As shown in fig. 1-6, mini one-key pumpback injector, including injector main part 1, the outer wall fixed mounting of injector main part 1 has side ear 2, the bottom fixed mounting of injector main part 1 has injection head 3, the inside slip of injector main part 1 is provided with piston 13, the top external fixed surface of piston 13 installs second spring fixing base 12, the inside fixed mounting of injector main part 1 has first spring fixing base 6, the through-hole has been seted up at the middle part of first spring fixing base 6, the top of injector main part 1 is provided with push handle 4, the bottom external fixed surface that pushes handle 4 installs connecting rod 5, the bottom fixed surface of connecting rod 5 installs cylinder 9, the bottom external fixed surface of cylinder 9 installs injection pole 8, the one end of injection pole 8 runs through the through-hole that first spring fixing base 6 middle part was seted up and the top external fixed surface of second spring fixing base 12 is connected.

Further, the outer wall of injector main part 1 is provided with the scale label, and is printed with the capacity scale on the scale label, is provided with the adhesive between injector main part 1 and the scale label, and injector main part 1's outer wall is through powerful glue and scale label fixed connection, and injector main part 1 is 85% -92% with the transparency of scale label, and the operating personnel of being convenient for knows the inside liquid medicine volume of injector main part 1.

Further, be provided with first coil spring 7 between first spring fixing base 6 and the second spring fixing base 12, welded fastening is passed through in the bottom of first spring fixing base 6 to the one end of first coil spring 7, welded fastening is passed through at the top of second spring fixing base 12 to the other end of first coil spring 7, it is located first coil spring 7's inside to inject pole 8, in injecting the operation, drive second spring fixing base 12 and piston 13 downstream through injecting pole 8, first spring fixing base 6 keeps motionless, thereby make first coil spring 7 atress tensile, therefore, when the withdrawal operation, usable first coil spring 7's resilience effort, accomplish the withdrawal automatically.

Further, draw-in groove 11 has been seted up to the outer wall of injector main part 1, recess 14 has been seted up at the middle part of cylinder 9, the inside fixed mounting of recess 14 has second coil spring 15, the one end fixed mounting of second coil spring 15 has fixture block 10, in pushing the operation, through 8 control piston 13 downstream of injection pole, connecting rod 5 and cylinder 9 syntropy motion, when fixture block 10 and draw-in groove 11 are counterpointed, second coil spring 15 is automatic kick-backs, promote fixture block 10 card and go into in draw-in groove 11, can make first coil spring 7 keep tensile state, need not the hand and continuously exert oneself, when the withdrawal, press in the bellied fixture block 10 of 1 outer wall of injector main part, no longer play the locking effect, first coil spring 7 is automatic to kick-back, pulling piston 13 upwards moves, accomplish a key withdrawal.

Further, be provided with limiting slide 16 in the through-hole that first spring fixing base 6 middle part was seted up, limiting slide has been seted up to the outer wall of injection pole 8, and limiting slide 16 is two sets of with limiting slide's quantity, and limiting slide 16 slides and sets up in limiting slide, makes injection pole 8 untwist, prevents that the phenomenon that fixture block 10 can't aim at draw-in groove 11 from taking place.

Further, the quantity of side ear 2 is two sets of, and both side ears 2 are a style of calligraphy symmetric distribution, are provided with the powerful glue between side ear 2 and the injector main part 1, the outer wall of injector main part 1 passes through the powerful glue and 2 fixed connection of side ears, side ear 2 is close to the top of injector main part 1, during the use, the middle finger is hook-like with the forefinger bending to pass the hole site in 2 middle parts of side ear, difficult slippage when this structure makes operating personnel hand operation.

It should be noted that the utility model relates to a mini one-key withdrawal injector, which comprises an injector body 1, a side ear 2, an injection head 3, a push handle 4, a connecting rod 5, a first spring fixing seat 6, a first spiral spring 7, an injection rod 8, a cylinder 9, a clamping block 10, a clamping groove 11, a second spring fixing seat 12, a piston 13, a groove 14, a second spiral spring 15 and a limit slider 16, when in use, a middle finger and a forefinger are bent into a hook shape and pass through a hole at the middle part of the side ear 2, a thumb belly is downward and is placed above the push handle 4, the thumb, the forefinger and the middle finger exert opposite forces to push the push handle 4 to move oppositely, the push handle 4 drives the connecting rod 5, the cylinder 9, the injection rod 8, the second spring fixing seat 12 and the piston 13 to move downwards, the first spring fixing seat 6 is kept still, thereby the first spiral spring 7 is stretched and deformed, when the piston 13 moves to the bottommost end, the air in the injector main body 1 is exhausted, meanwhile, when the piston 13 moves to the bottommost end, the clamping block 10 is aligned with the clamping groove 11, the second spiral spring 15 automatically rebounds to push the clamping block 10 to be clamped into the clamping groove 11 to play a locking role, so that the first spiral spring 7 keeps a stretching deformation state, the mini one-key suck injector is moved, the injection head 3 extends into the liquid medicine, the clamping block 10 protruding from the outer wall of the injector main body 1 is pressed down, the locking role is not played any more, the first spiral spring 7 automatically rebounds to pull the second spring fixing seat 12 and the piston 13 to move upwards, so that one-key suck is realized, when the piston 13 moves upwards, the negative pressure is formed in the injector main body 1, the liquid medicine is sucked into the injector main body 1 according to the principle of negative pressure adsorption, the injection operation is the same as the method for exhausting and injecting the air in the injector main body 1, is relatively practical.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. Mini one-key pumpback injector, including injector main part (1), its characterized in that: the outer wall fixed mounting of injector main part (1) has side ear (2), the bottom fixed mounting of injector main part (1) has injection head (3), the inside of injector main part (1) slides and is provided with piston (13), the top external fixed surface of piston (13) installs second spring fixing base (12), the inside fixed mounting of injector main part (1) has first spring fixing base (6), the through-hole has been seted up at the middle part of first spring fixing base (6), the top of injector main part (1) is provided with push handle (4), the bottom external fixed surface of push handle (4) installs connecting rod (5), the bottom fixed mounting of connecting rod (5) has cylinder (9), the bottom external fixed surface of cylinder (9) installs injection pole (8), the one end of injection pole (8) runs through the through-hole and second spring fixing base (12) that first spring fixing base (6) middle part was seted up Is fixedly connected with the outer surface of the top part of the frame.

2. The mini one-key withdrawal plunger of claim 1, wherein: the outer wall of the injector main body (1) is provided with a scale label, the scale label is printed with capacity scales, an adhesive is arranged between the injector main body (1) and the scale label, the outer wall of the injector main body (1) is fixedly connected with the scale label through a super glue, and the transparencies of the injector main body (1) and the scale label are both 85% -92%.

3. The mini one-key withdrawal plunger of claim 1, wherein: be provided with first coil spring (7) between first spring fixing base (6) and second spring fixing base (12), welded fastening installs in the bottom of first spring fixing base (6) one end of first coil spring (7), welded fastening installs in the top of second spring fixing base (12) the other end of first coil spring (7), it is located the inside of first coil spring (7) to push away notes pole (8).

4. The mini one-key withdrawal plunger of claim 1, wherein: the outer wall of the injector main body (1) is provided with a clamping groove (11), the middle of the cylinder (9) is provided with a groove (14), a second spiral spring (15) is fixedly mounted inside the groove (14), and one end of the second spiral spring (15) is fixedly provided with a clamping block (10).

5. The mini one-key withdrawal plunger of claim 1, wherein: the injection device is characterized in that a limiting sliding block (16) is arranged in a through hole formed in the middle of the first spring fixing seat (6), a limiting sliding groove is formed in the outer wall of the injection rod (8), the limiting sliding blocks (16) and the limiting sliding grooves are two in number, and the limiting sliding blocks (16) are arranged in the limiting sliding groove in a sliding mode.

6. The mini one-key withdrawal plunger of claim 1, wherein: the quantity of side ear (2) is two sets of, and both side ear (2) are a style of calligraphy symmetric distribution, be provided with the powerful glue between side ear (2) and injector main part (1), the outer wall of injector main part (1) passes through powerful glue and side ear (2) fixed connection, side ear (2) are close to the top of injector main part (1).