CN216022485U

CN216022485U - Combined pre-filled syringe

Info

Publication number: CN216022485U
Application number: CN202122113974.9U
Authority: CN
Inventors: 左艳丽; 张霞; 何月月
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-09-02
Filing date: 2021-09-02
Publication date: 2022-03-15
Anticipated expiration: 2031-09-02

Abstract

The utility model discloses a composite pre-filled syringe, a plurality of teeth are uniformly and fixedly connected with one side of a through groove, the top of a fixed plate is fixedly connected with a first fixed block, a rotating shaft is movably inserted at the outer side of a composite syringe tube body, one end of the rotating shaft, which is positioned in the composite syringe tube body, is fixedly connected with a clamping block, one side of the clamping block is fixedly connected with a convex column, and a telescopic spring is fixedly connected between the outer side of the convex column and the top of the first fixed block, when in use, the rotating shaft drives the clamping block to rotate by screwing a rotating handle, so that the clamping block is separated from the teeth, the clamping block is pressed against the other side of the through groove under the action of the telescopic spring, at the moment, a push block can be pushed to push a piston to move in the composite syringe tube body, so as to inject medicine to a patient, and when not in use, the clamping block is pressed against one side of the teeth in the through groove under the action of the telescopic spring, the push rod is locked, so that the phenomenon that the liquid medicine runs off due to mistaken touch of the push block, and the waste of liquid medicine resources is caused is prevented.

Description

Combined pre-filled syringe

Technical Field

The utility model relates to the technical field of pre-filled syringes, in particular to a composite pre-filled syringe.

Background

Pre-filled syringes are becoming increasingly appreciated mainly due to the advantages of the product itself, the ease of use of pre-filled syringes, the changing modern medical market, the increasing number of biotechnological therapies and drug candidates that can only be administered by injection routes, and the wide variety of therapeutic areas to which they relate, such as multiple sclerosis, infertility, osteoporosis, hepatitis, rheumatoid arthritis, cancer, anemia and hemophilia. Some biotech drugs require frequent administration by the patient himself, who benefits most deeply from the convenience of the prefilled syringe, since the prefilled syringe eliminates some of the handling steps and allows a quicker and easier use

Before the pre-filled syringe is used, the pre-filled syringe needs to be taken out by disassembling and packaging, and in the taking-out process, the liquid medicine may be lost and the waste of liquid medicine resources is caused because a patient or a doctor mistakenly touches a push rod of the pre-filled syringe, so that the composite pre-filled syringe is provided.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a composite pre-filled syringe, which solves the above problems.

In order to achieve the purpose, the utility model provides the following technical scheme: a combined pre-filled syringe comprises a combined syringe tube body, wherein a push rod is movably inserted into one side of the combined syringe tube body, a safety mechanism is arranged inside the combined syringe tube body, and a protection mechanism is arranged outside the combined syringe tube body;

the safety mechanism is including leading to groove, a plurality of tooth and fixed plate, lead to the groove and offer in one side of push rod, a plurality of the even fixed connection of tooth in the one side that leads to the groove, fixed plate fixed connection just runs through in the inside of combined type syringe body in logical groove, the first fixed block of top fixedly connected with of fixed plate, the outside activity of combined type syringe body has inserted the pivot, the pivot is located the inside one end fixedly connected with fixture block of combined type syringe body, one side fixedly connected with projection of fixture block, fixedly connected with expanding spring between the outside of projection and the top of first fixed block, the pivot is located the one end fixedly connected with swing handle in the combined type syringe body outside, the inboard of swing handle is located the outside fixedly connected with fixed column of pivot.

Preferably, the protection mechanism includes an injection needle protection sleeve, a fixing rope and a fixing buckle, the fixing rope is fixedly connected to one end of the injection needle protection sleeve, the fixing buckle is fixedly connected to one end of the fixing rope far away from the injection needle protection sleeve, and the fixing buckle is movably sleeved on the outer side of the fixing column.

Preferably, the outer side of the push rod is integrally formed with two slide rails, the composite syringe tube body is fixedly connected with two second fixed blocks, and the slide rails are slidably connected to one sides of the second fixed blocks through sliding grooves.

Preferably, the top of the push rod is fixedly connected with a push block, and one end of the push rod, which is far away from the push block, is located inside the composite syringe tube and is fixedly connected with a piston.

Preferably, the outer side of the composite syringe tube body is located above the rotating handle and is fixedly connected with two handles, and the bottom of the composite syringe tube body is provided with a medicine outlet.

Preferably, the fixture block is located inside the through groove, and the fixture block abuts against the outer side of the tooth.

Preferably, the outer side of the medicine outlet is movably sleeved with a needle head joint, the injection needle head protective sleeve is movably sleeved on the outer side of the needle head joint, and the top end of the injection needle head protective sleeve is sleeved at the bottom of the composite injector tube body.

Compared with the prior art, the utility model has the beneficial effects that: when the combined type injection syringe is used, the rotating handle is screwed, the rotating shaft drives the fixture block to rotate, so that the fixture block is separated from the teeth, the fixture block is abutted against the other side of the through groove under the action of the telescopic spring, the piston is pushed to move in the combined type injection syringe body through pushing the push block, a patient is injected with medicine, when the combined type injection syringe is not used, the fixture block is abutted against one side of the teeth in the through groove under the action of the telescopic spring, the push rod is locked, and the phenomenon that liquid medicine is lost due to mistaken contact of the push block is avoided, so that liquid medicine resources are wasted; through the syringe needle protective sheath, prevent that the doctor maloperation from leading to the syringe needle to prick the health or damage syringe needle.

Drawings

FIG. 1 is a schematic cross-sectional view of a composite syringe tube according to the present invention;

FIG. 2 is a schematic structural view of the present invention;

FIG. 3 is an enlarged view of the area A in FIG. 1 according to the present invention;

FIG. 4 is an enlarged view of the area B in FIG. 2 according to the present invention;

FIG. 5 is a schematic diagram of a fixture block structure according to the present invention;

fig. 6 is a schematic view of the structure of the push rod of the present invention.

In the figure: 1. a composite syringe tube; 2. a push rod; 3. a safety mechanism; 31. a through groove; 32. teeth; 33. a fixing plate; 34. a first fixed block; 35. a rotating shaft; 36. a clamping block; 37. a convex column; 38. a tension spring; 39. rotating the handle; 310. fixing a column; 4. a protection mechanism; 41. a syringe needle protective sleeve; 42. fixing a rope; 43. a fixing buckle; 5. a slide rail; 6. a second fixed block; 7. a piston; 8. a push block; 9. a handle; 10. a medicine outlet; 11. a needle head joint.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Examples

Referring to fig. 1-6, the present invention provides a technical solution: a combined pre-filled syringe comprises a combined syringe tube body 1, a push rod 2 is movably inserted into one side of the combined syringe tube body 1, a safety mechanism 3 is arranged inside the combined syringe tube body 1, and a protection mechanism 4 is arranged outside the combined syringe tube body 1;

the safety mechanism 3 comprises a through groove 31, a plurality of teeth 32 and a fixing plate 33, the through groove 31 is arranged at one side of the push rod 2, the plurality of teeth 32 are uniformly and fixedly connected at one side of the through groove 31, the fixing plate 33 is fixedly connected inside the combined type syringe tube body 1 and penetrates through the through groove 31, a first fixing block 34 is fixedly connected at the top of the fixing plate 33, a rotating shaft 35 is movably inserted at the outer side of the combined type syringe tube body 1, a clamping block 36 is fixedly connected at one end of the rotating shaft 35 positioned inside the combined type syringe tube body 1, a convex column 37 is fixedly connected at one side of the clamping block 36, a telescopic spring 38 is fixedly connected between the outer side of the convex column 37 and the top of the first fixing block 34, a rotating handle 39 is fixedly connected at one end of the rotating shaft 35 positioned at the outer side of the combined type syringe tube body 1, a fixing column 310 is fixedly connected at the outer side of the rotating handle 39, the rotating handle 39 is screwed, the rotating shaft 35 drives the fixture block 36 to rotate, the fixture block 36 is separated from the teeth 32, the fixture block 36 is abutted against the other side of the through groove 31 under the action of the telescopic spring 38, at the moment, the piston 7 is pushed to move in the combined type injector tube body 1 by pushing the push block 8, medicine is injected to a patient, when the combined type injector tube is not used, the fixture block 36 is abutted against one side of the teeth 32 in the through groove 31 under the action of the telescopic spring 38, the push rod 2 is locked, and liquid medicine loss caused by mistakenly touching the push block 8 is prevented, so that liquid medicine resource waste is caused; through injection needle head protective sheath 41, prevent doctor's maloperation, lead to the syringe needle to prick the health, boss 37 is located the central point of fixture block 36 and puts, pivot 35 is located fixture block 36 outside one end, the one end of expanding spring 38 is fixed on boss 37, the other end is fixed on the first fixed block 34 that is located under pivot 35, fixture block 36 joint is on leading to the inside tooth 32 of groove 31, fix push rod 2, expanding spring 38 gives fixture block 36 decurrent pulling force, prevent that the fixture block from taking place to shift, when opening the insurance, rotatory pivot 35, it is rotatory to drive fixture block 36, make it contradict in the inside smooth one side that leads to groove 31, expanding spring 38 gives fixture block 36 decurrent pulling force, prevent that the fixture block from taking place to shift.

In this embodiment, specifically: protection machanism 4 includes injection needle protective sheath 41, fixed rope 42 and fixed knot 43, and fixed rope 42 fixed connection is in the one end of injection needle protective sheath 41, and fixed knot 43 fixed connection is in the one end that injection needle protective sheath 41 was kept away from to fixed rope 42, and fixed knot 43 activity cup joints in the outside of fixed column 310, cup joints in the outside of syringe needle through injection needle protective sheath 41, prevents that doctor and patient from being pricked.

In this embodiment, specifically: the outside integrated into one piece of push rod 2 has the quantity to be two slide rails 5, and the inside fixedly connected with quantity of combined type syringe body 1 is two second fixed block 6, and slide rail 5 passes through spout sliding connection in one side of second fixed block 6, slides in the inside spout of second fixed block 6 through slide rail 5 for push rod 2 slides in the inside of combined type syringe body 1.

In this embodiment, specifically: the top fixedly connected with ejector pad 8 of push rod 2, the one end that push rod 2 kept away from ejector pad 8 is located the inside fixedly connected with piston 7 of combined type syringe body 1, and piston 7 slides in combined type syringe body 1 is inside, promotes the liquid medicine.

In this embodiment, specifically: the outer side of the composite syringe tube 1 is located above the rotating handle 39 and is fixedly connected with two handles 9, a medicine outlet 10 is formed in the bottom of the composite syringe tube 1, and medicine liquid is led out through the medicine outlet 10.

In this embodiment, specifically: the latch 36 is located inside the through slot 31, and the latch 36 abuts against the outer side of the tooth 32, so that the latch 36 abuts against the outer side of the tooth 32 to fix the push rod 2.

In this embodiment, specifically: the needle joint 11 is movably sleeved on the outer side of the medicine outlet 10, the injection needle protecting sleeve 41 is movably sleeved on the outer side of the needle joint 11, the top end of the injection needle protecting sleeve 41 is sleeved at the bottom of the composite injector tube body 1, and the liquid medicine is led out of the interior of the composite injector tube body 1 through the needle joint 11.

Working principle or structure principle, when in use, the distance between the fixed column 310 and the injection needle protecting sleeve 41 is reduced by screwing the rotating handle 39, the fixing buckle 43 sleeved outside the fixed column 310 is manually taken off, at this time, the injection needle protecting sleeve 41 sleeved outside the needle joint 11 can be manually pulled out, the injection needle protecting sleeve 41 can prevent the doctor from misoperation to cause the body puncture of the needle, when the rotating handle 39 is screwed, the rotating shaft 35 drives the fixture block 36 to rotate, so that the fixture block 36 is separated from the teeth 32, under the action of the expansion spring 38, the fixture block 36 is abutted against the other side of the through groove 31, the other side of the through groove 31 is a smooth plane, at this time, the push block 8 can be pushed to push the piston 7 to move in the combined type syringe tube body 1 to inject medicine to a patient, when not in use, under the action of the expansion spring 38, the fixture block 36 is abutted against one side of the teeth 32 inside the through groove 31, the push rod 2 is locked, and the phenomenon that the liquid medicine runs off and the liquid medicine resource is wasted due to the fact that the push block 8 is touched by mistake is prevented.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments 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 combined type preliminary filling syringe, includes combined type syringe body (1), its characterized in that: a push rod (2) is movably inserted into one side of the combined type injector tube body (1), a safety mechanism (3) is arranged inside the combined type injector tube body (1), and a protection mechanism (4) is arranged outside the combined type injector tube body (1);

the safety mechanism (3) comprises a through groove (31), a plurality of teeth (32) and a fixing plate (33), the through groove (31) is arranged on one side of the push rod (2), the teeth (32) are uniformly and fixedly connected on one side of the through groove (31), the fixing plate (33) is fixedly connected inside the combined type injector tube body (1) and penetrates through the through groove (31), the top of the fixing plate (33) is fixedly connected with a first fixing block (34), a rotating shaft (35) is movably inserted in the outer side of the combined type injector tube body (1), one end, located inside the combined type injector tube body (1), of the rotating shaft (35) is fixedly connected with a clamping block (36), one side of the clamping block (36) is fixedly connected with a convex column (37), and a telescopic spring (38) is fixedly connected between the outer side of the convex column (37) and the top of the first fixing block (34), one end of the rotating shaft (35) located on the outer side of the combined type injector tube body (1) is fixedly connected with a rotating handle (39), and the inner side of the rotating handle (39) located on the outer side of the rotating shaft (35) is fixedly connected with a fixing column (310).

2. A composite pre-filled syringe as set forth in claim 1, wherein: protection machanism (4) are including syringe needle protective sheath (41), fixed rope (42) and fixed knot (43), fixed rope (42) fixed connection is in the one end of syringe needle protective sheath (41), fixed knot (43) fixed connection is in the one end of syringe needle protective sheath (41) is kept away from in fixed rope (42), the outside in fixed column (310) is cup jointed in fixed knot (43) activity.

3. A composite pre-filled syringe as set forth in claim 1, wherein: the outside integrated into one piece of push rod (2) has slide rail (5) that quantity is two, the inside fixedly connected with quantity of combined type syringe body (1) is second fixed block (6) of two, slide rail (5) pass through spout sliding connection in one side of second fixed block (6).

4. A composite pre-filled syringe as set forth in claim 1, wherein: the top fixedly connected with ejector pad (8) of push rod (2), the one end that push rod (2) kept away from ejector pad (8) is located the inside fixedly connected with piston (7) of combined type syringe body (1).

5. A composite pre-filled syringe as set forth in claim 2, wherein: the outer side of the combined type injector tube body (1) is located above the rotating handle (39) and is fixedly connected with two handles (9), and the bottom of the combined type injector tube body (1) is provided with a medicine outlet (10).

6. A composite pre-filled syringe as set forth in claim 1, wherein: the fixture block (36) is positioned in the through groove (31), and the fixture block (36) is abutted to the outer side of the tooth (32).

7. A composite pre-filled syringe as set forth in claim 5, wherein: the outside activity of going out medicine mouth (10) has cup jointed syringe needle joint (11), the activity of injection needle protective sheath (41) is cup jointed in the outside of syringe needle joint (11), the top of injection needle protective sheath (41) is cup jointed in the bottom of combined type syringe body (1).