Umbrella-shaped handheld syringe

Abstract

The umbrella-shaped handheld syringe comprises a syringe needle and an outer cylinder, the syringe needle is detachably installed at the front end of the outer cylinder, the outer cylinder is composed of a liquid storage part and a working part, the liquid storage part comprises a liquid storage cylinder body, a liquid storage bag body is arranged in the liquid storage cylinder body, and the working part is connected with the liquid storage bag body. Pressure is applied to the tail part of the liquid storage bag body to force the liquid in the liquid storage bag body to be discharged along the front end of the liquid storage bag body; the working part comprises a working barrel, a propelling piston is arranged in the working barrel, an umbrella-shaped propelling gripper is arranged outside the working barrel, and the propelling gripper is contracted inwards and then obliquely and downwards presses the propelling piston through a component penetrating through the working barrel, so that the propelling piston is forced to slide forwards and extrude the tail part of the liquid storage bag body. When the injector is used, the injector is held by a single hand in a pen holding mode, the two fingers press the pushing gripper inwards, the pushing gripper presses the pushing piston downwards to extrude the liquid storage bag body to complete injection operation, operation is fast and convenient, operation can be completed by the single hand, and stability is high.

Description

Technical Field

[0001] The disclosed embodiments relate to the technical field of drug administration injection equipment, and in particular to an umbrella-shaped grip syringe. Background Art

[0002] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present disclosure, and shall not necessarily be regarded as an admission or any form of suggestion that the information constitutes the relevant technology that has been known to ordinary technicians in the field.

[0003] In the field of ophthalmology, some eye diseases require intravitreal injection to achieve the purpose of treatment. In the related art, the instruments used for intravitreal injection are all common syringes, which adopt the rear push injection or knob injection method. However, in the actual operation process, due to the small vitreous operation area, the push-type syringe is used by pressing and pushing the rear of the syringe with the thumb, and the distance between the injection needle and the hand is relatively long. Holding the syringe with one hand can easily cause the needle to shake, that is, the other hand is required to stabilize the injection needle to maintain stability. The eyeball is a rotatable organ tube, and the slow insertion method makes the eyeball rotate continuously, which makes it difficult to insert the needle, and rapid insertion is prone to injury. Therefore, the intravitreal injection method generally requires two people to complete, one person is required to inject, and the other person is required to stabilize the eyeball, and the degree of cooperation between the two people is not easy to control, which increases the difficulty of the operation and the low degree of cooperation among multiple people causes accidents, and the efficiency is very low. Summary of the invention

[0004] The invention aims to solve the problem in the related art that the existing instruments used for intravitreal injection are difficult to operate, require multiple people to operate, have low coordination, are prone to accidents and reduce efficiency.

[0005] In order to solve the above problems and achieve the purpose of obtaining an apparatus that can be used by a single person to perform the intravitreal injection method, the embodiments of the present disclosure provide the following technical solutions:

[0006] In an embodiment of the present disclosure, an umbrella-shaped grip syringe is provided, comprising an injection needle and an outer barrel, wherein the injection needle is detachably mounted at the front end of the outer barrel, wherein the outer barrel comprises a liquid storage portion and a working portion that are butted against each other, and wherein the injection needle is mounted at the front end of the liquid storage portion;

[0007] The liquid storage part comprises a liquid storage cylinder, wherein a liquid storage capsule is arranged inside the liquid storage cylinder, and pressure is applied to the tail of the liquid storage capsule to force the liquid inside to be discharged along the front end of the liquid storage capsule;

[0008] The working part includes a working cylinder, a propulsion piston is arranged inside the working cylinder, and an umbrella-shaped propulsion gripper is arranged outside the working cylinder. After the propulsion gripper contracts inwardly, it presses the propulsion piston obliquely downward through a part passing through the working cylinder, forcing the propulsion piston to slide forward and squeeze the tail of the liquid storage bag body.

[0009] In one embodiment of the present disclosure, the thrust gripper includes an annular sleeve arranged at the end of the working cylinder, the annular sleeve includes a shaft sleeve with a plurality of mounting positions, a movable arm is movably connected to the mounting position through an annular core shaft, an adjustable strut is provided on the movable arm, and a plurality of annular grooves are provided on the thrust piston, and the strut rod passes through the working cylinder and is clamped in the groove.

[0010] In one embodiment of the present disclosure, an arc-shaped blocking member is provided in the installation position, and the blocking member is close to the outer side surface of the annular sleeve. A torsion spring is also provided in the installation position, and a support member of the torsion spring is located on the inner side surface of the annular sleeve, and one of the support members is buckled on the movable arm.

[0011] In one embodiment of the present disclosure, a fixing edge extending inward is provided at the bottom of the sleeve, and the fixing edge is wrapped around the end surface of the working cylinder, and the width of the fixing edge is smaller than the thickness of the cylinder wall of the working cylinder.

[0012] In one embodiment of the present disclosure, the end of the support rod is mounted on the movable arm via an axial connection structure, an inwardly inclined stopper is provided on the outside of the axial connection structure, and an angle α is formed between the support rod and the movable arm.

[0013] In one embodiment of the present disclosure, the working cylinder is provided with a plurality of strip holes for the support rods to pass through, the strip holes are located within the maximum projection area of ​​the support rods, and the length of the strip holes is greater than half the length of the support rods.

[0014] In one embodiment of the present disclosure, a check piece is further provided inside the outer cylinder, and the check piece is arranged between the liquid storage part and the working part. The check piece includes a fixing ring, and a plurality of elastic tongues are provided on the inner side of the fixing ring facing the liquid storage part.

[0015] In one embodiment of the present disclosure, the fixing ring is an annular sheet structure, a plurality of the elastic tongues are evenly arranged on the fixing ring with an angle between them, and the elastic tongues are arc-shaped structures with their outer arc surfaces facing the center of the outer cylinder.

[0016] In one embodiment of the present disclosure, the liquid storage bag includes a liquid tube whose shape fits the inner wall of the liquid storage cylinder, the front end of the liquid tube has a conical liquid outlet, the tail of the liquid tube is provided with a bag piston, a plurality of supporting ribs are provided between the bag piston and the liquid tube, and the injection needle is installed on the outer cylinder or the liquid tube.

[0017] In one embodiment of the present disclosure, an outer cover is provided at the rear of the outer tube, and the outer cover is buckled and installed with the outer tube through a hinge.

[0018] According to the embodiments of the present disclosure, the syringe has the following advantages: it includes an injection needle and an outer barrel, the injection needle is detachably mounted at the front end of the outer barrel, the outer barrel is composed of a liquid storage part and a working part, the liquid storage part includes a liquid storage cylinder, a liquid storage capsule is arranged inside the liquid storage cylinder, and pressure is applied to the tail of the liquid storage capsule to force the liquid inside it to be discharged along the front end of the liquid storage capsule; the working part includes a working cylinder, a propulsion piston is arranged inside the working cylinder, and an umbrella-shaped propulsion gripper is arranged outside the working cylinder, and the propulsion gripper contracts inwardly and presses the propulsion piston obliquely downward through a part passing through the working cylinder, forcing the propulsion piston to slide forward and squeeze the tail of the liquid storage capsule. When in use, one hand holds the syringe in the form of holding a pen, two fingers press the propulsion gripper inward, and the propulsion gripper presses down to push the piston to squeeze the liquid storage capsule to complete the injection operation. The pen-holding operation method is quick and convenient, and the operation can be completed with one hand, and the other hand is used to stabilize the eyeball, which has high stability, and the other hand is used to stabilize the eyeball, which is quick and convenient to operate, improves efficiency, and also avoids accidents caused by multiple people operating. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the related technologies, the following briefly introduces the drawings required for the embodiments or the related technical descriptions. Obviously, the drawings described below are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0020] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology. They are not used to limit the conditions under which the present disclosure can be implemented, and therefore have no substantive technical significance. Any structural modification, change in proportion or adjustment of size, without affecting the effects and purposes that can be achieved by the present disclosure, should still fall within the scope of the technical contents disclosed in the present disclosure.

[0021] Figure 1 is a front view of an umbrella-shaped grip syringe according to an exemplary embodiment;

[0022] Figure 2 for Figure 1 Middle AA section view;

[0023] Figure 3 is a front view of a working cylinder according to an exemplary embodiment;

[0024] Figure 4 is a front view of an annular kit according to an exemplary embodiment;

[0025] Figure 5 for Figure 4 Middle BB section view;

[0026] Figure 6 is a front view of a structure at a movable arm according to an exemplary embodiment;

[0027] Figure 7 is a top view of a structure at a movable arm according to an exemplary embodiment;

[0028] Figure 8 is a front view of a return stop according to an exemplary embodiment;

[0029] Fig. 9 for Figure 8 Middle CC section view;

[0030] Fig.10 It is a front view of a liquid storage bag according to an exemplary embodiment.

[0031] In the figure: 1. injection needle; 2. liquid storage cylinder; 3. liquid storage capsule; 31. liquid tube; 32. liquid outlet; 33. capsule piston; 34. supporting rib; 4. working cylinder; 41. strip hole; 5. push piston; 51. slot; 6. push gripper; 61. annular kit; 62. mounting position; 63. bushing; 64. core shaft; 65. movable arm; 66. support rod; 67. blocking member; 68. torsion spring; 69. fixed edge; 610. shaft connection structure; 611. block; 7. check member; 71. fixing ring; 72. elastic tongue; 8. outer cover. DETAILED DESCRIPTION

[0032] The following is a description of the implementation methods of the present disclosure by specific specific embodiments. People familiar with the technology can easily understand other advantages and effects of the present disclosure from the contents disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present disclosure, but not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present disclosure.

[0033] The terms such as "upper", "lower", "left", "right", "middle", etc. cited in this specification are only for the convenience of description and are not used to limit the scope of implementation of the present disclosure. Changes or adjustments to their relative relationships should be regarded as the scope of implementation of the present disclosure without substantially changing the technical content.

[0034] like Figure 1 , Figure 2As shown, it shows that an umbrella-shaped grip syringe is provided according to an embodiment of the present disclosure. It includes an injection needle 1 and an outer barrel. The injection needle 1 is detachably mounted at the front end of the outer barrel. The tail of the outer barrel is provided with an outer cover 8, and the outer cover 8 is installed with the outer barrel through a buckle. The outer barrel is composed of a liquid storage part and a working part. The liquid storage part includes a liquid storage cylinder 2. A liquid storage capsule 3 is provided inside the liquid storage cylinder 2. Pressure is applied to the tail of the liquid storage capsule 3 to force the liquid inside to be discharged along the front end of the liquid storage capsule 3; the working part includes a working cylinder 4. A propulsion piston 5 is provided inside the working cylinder 4. An umbrella-shaped propulsion gripper 6 is provided outside the working cylinder 4. After the propulsion gripper 6 contracts inwardly, it presses the propulsion piston 5 obliquely downward through a part passing through the working cylinder 4, forcing the propulsion piston 5 to slide forward and squeeze the tail of the liquid storage capsule 3.

[0035] The liquid storage part and the working part are spirally installed, and the liquid storage capsule 3 is an independent structure that can be filled, so it is independently packaged and sterilized. When using it, one hand holds the syringe in the form of a pen, and two fingers press the push gripper 6 inward, and the push gripper 6 is pressed down to push the piston to squeeze the liquid storage capsule 3 to complete the injection operation. The pen-like operation method is quick and convenient to operate, and the operation can be completed with one hand. The other hand is used to stabilize the eyeball, which has high stability. The other hand is used to stabilize the eyeball, which is quick and convenient to operate, improves efficiency and avoids accidents caused by multiple people operating.

[0036] like Figure 4 , Figure 5 As shown, the thrust gripper 6 includes an annular sleeve 61 arranged at the end of the working cylinder 4, the annular sleeve 61 includes a shaft sleeve 63 with a plurality of mounting positions 62, a movable arm 65 is movably connected to the mounting position 62 through an annular core shaft 64, and an adjustable strut 66 is provided on the movable arm 65, and a plurality of annular grooves 51 are provided on the thrust piston 5, and the strut 66 passes through the working cylinder 4 and is obliquely supported in the groove 51.

[0037] By setting the shaft sleeve 63 structure, one end of the movable arm 65 is fixed in the peripheral sleeve and can be adjusted along the shaft sleeve 63, and the movably connected support rod 66 penetrates into the working cylinder 4 and is stuck in the groove 51 of the thrust piston 5, pressing the movable arm 65 inward, so that the support rod 66 pushes the thrust piston 5 to slide forward.

[0038] Specifically, the end of the support rod 66 is installed on the movable arm 65 through the shaft connection structure 610. The outside of the shaft connection structure 610 is provided with an inwardly inclined stopper 611. The purpose of the stopper 611 is to prevent the support rod from opening excessively outward. An angle α is formed between the support rod 66 and the movable arm 65, and the angle α is an acute angle.

[0039] Among them, such as Figure 3As shown, the working cylinder 4 is provided with a plurality of strip holes 41 for the support rods 66 to pass through, the strip holes 41 are located within the maximum projection area of ​​the support rods 66 , and the length of the strip holes 41 is greater than half the length of the support rods 66 .

[0040] In order to prevent the movable arm 65 from opening outward at an excessively large angle, Figure 6 , Figure 7 As shown, an arc-shaped blocking member 67 is provided in the mounting position 62, and the blocking member 67 is close to the outer side surface of the annular sleeve 61, that is, it limits the outward opening angle of the movable arm 65, so that the propulsion gripper 6 maintains an umbrella-like structure, and optionally, it can also be connected in series through a pull rope on the inner side of all the movable arms 65.

[0041] In order to ensure that the movable arm 65 can rebound in time after being pressed and perform a continuous pressing process, a torsion spring 68 is also provided in the installation position 62. The support of the torsion spring 68 is located on the inner side of the annular sleeve 61. One of the support parts is buckled on the movable arm 65. One of the support parts of the torsion spring 68 is buckled on the movable arm 65 to determine its installation position.

[0042] See again Figure 4 , Figure 5 As shown, the bottom of the sleeve 63 is provided with a fixed edge 69 extending inward, and the fixed edge 69 is wrapped around the end face of the working cylinder 4. The width of the fixed edge 69 is smaller than the thickness of the wall of the working cylinder 4. The fixed edge 69 is wrapped around the end face of the working cylinder 4 to prevent the sleeve 63 from sliding toward the rear end of the working cylinder 4 after installation, thereby affecting the propulsion effect of the support rod 66. Moreover, the fixed edge 69 located on the end face of the working cylinder 4 is clamped in the upper structure position between the liquid storage cylinder 2 and the working cylinder 4 after installation, ensuring absolute stability when using the propulsion gripper 6. The propulsion gripper 6 is a structure pre-installed on the working cylinder 4.

[0043] In the process of use, in order to prevent the advancing piston 5 from sliding backwards and exiting, as Figure 8 , Fig. 9 As shown, a check piece 7 is further provided inside the outer cylinder, and the check piece 7 is arranged between the liquid storage part and the working part, and the check piece 7 includes a fixing ring 71, and a plurality of elastic tongues 72 facing the liquid storage part are provided inside the fixing ring 71. The elastic tongues 72 are directly stuck in the clamping groove 51 of the propulsion piston 5 after the propulsion piston 5 moves forward, thereby preventing it from retreating backward.

[0044] In one embodiment of the present disclosure, in order to ensure the stability of the check member 7, the check member 7 is clamped in the upper structural position between the liquid storage cylinder 2 and the working cylinder 4, the fixing ring 71 is an annular sheet structure, and a plurality of elastic tongues 72 are evenly arranged on the fixing ring 71 with an angle between the two, and the elastic tongues 72 are an arc-shaped structure with the outer arc surface facing the center of the outer cylinder.

[0045] In one embodiment of the present disclosure, Fig.10 As shown, it is an independent liquid storage capsule 3, which includes a liquid tube 31 whose shape is in contact with the inner wall of the liquid storage cylinder 2, a conical liquid outlet 32 ​​at the front end of the liquid tube 31, a capsule piston 33 at the tail of the liquid tube 31, and a plurality of support ribs 34 are provided between the capsule piston 33 and the liquid tube 31, the support ribs 34 are symmetrically arranged, and the injection needle 1 is installed on the outer cylinder or the liquid tube 31. The purpose of the support ribs 34 in this structure is to prevent the capsule piston 33 from being accidentally touched during the independent placement of the liquid storage capsule 3, resulting in the liquid being pushed out, and a sterile seal can be provided at the liquid outlet 32.

[0046] In one embodiment of the present disclosure, since the liquid storage cylinder 2 and the working cylinder 4 are separate structures, before use, the support ribs 34 on the liquid storage capsule 3 are removed and placed inside the liquid storage cylinder 2, the check piece 7 is placed in the installation port of the liquid storage cylinder 2, and the rotation of the working cylinder 4 is installed at the installation port of the liquid storage cylinder 2 and tightened. The installation of the push piston 5 can be replaced by opening the outer cover 8 in advance, and it can be inserted from the tail of the working cylinder 4. After preparation, remove the sterile seal, install the injection needle 1 at the liquid outlet 32 ​​or the external installation position 62 of the outer cylinder, and it can be operated and used. The application scenario disclosed by this technical effect is only one of the single-handed injection operations, and it is not limited to the application in this scenario.

[0047] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0048] Although the present disclosure has been described in detail above with general descriptions and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements may be made to the present disclosure. Therefore, these modifications or improvements made without departing from the spirit of the present disclosure are within the scope of protection claimed by the present disclosure.

Claims

1. An umbrella-shaped grip syringe, comprising an injection needle and an outer barrel, characterized in that: The injection needle is detachably mounted on the front end of the outer cylinder, the outer cylinder comprises a liquid storage part and a working part that are butted against each other, and the injection needle is mounted on the front end of the liquid storage part; The liquid storage part includes a liquid storage cylinder, wherein a liquid storage capsule is arranged inside the liquid storage cylinder, and pressure is applied to the tail of the liquid storage capsule to force the liquid inside to be discharged along the front end of the liquid storage capsule; The working part includes a working cylinder, a propulsion piston is arranged inside the working cylinder, and an umbrella-shaped propulsion gripper is arranged outside the working cylinder. After the propulsion gripper contracts inwardly, it presses the propulsion piston obliquely downward through a part passing through the working cylinder, forcing the propulsion piston to slide forward and squeeze the tail of the liquid storage bag body.

2. The umbrella grip syringe according to claim 1, characterized in that: The propulsion gripper includes an annular sleeve arranged at the end of the working cylinder, the annular sleeve includes a shaft sleeve with a plurality of mounting positions, a movable arm is movably connected to the mounting position through an annular core shaft, an adjustable strut is provided on the movable arm, and a plurality of annular grooves are provided on the propulsion piston, and the strut rod passes through the working cylinder and is stuck in the groove.

3. The umbrella grip syringe according to claim 2, characterized in that: An arc-shaped blocking piece is arranged in the installation position, and the blocking piece is close to the outer side surface of the annular sleeve. A torsion spring is also arranged in the installation position, and a support piece of the torsion spring is located on the inner side surface of the annular sleeve, and one of the support pieces is buckled on the movable arm.

4. The umbrella grip syringe according to claim 3, characterized in that: The bottom of the sleeve is provided with a fixed edge extending inwardly, and the fixed edge is covered on the end surface of the working cylinder body, and the width of the fixed edge is smaller than the thickness of the cylinder wall of the working cylinder body.

5. The umbrella grip syringe according to claim 4, characterized in that: The end of the support rod is mounted on the movable arm via an axis connection structure, and an inwardly inclined stopper is provided on the outside of the axis connection structure, forming an angle α between the support rod and the movable arm.

6. The umbrella grip syringe according to claim 5, characterized in that: The working cylinder is provided with a plurality of strip holes for the support rods to pass through, the strip holes are located within the maximum projection area of ​​the support rods, and the length of the strip holes is greater than half the length of the support rods.

7. The umbrella grip syringe according to claim 1, characterized in that: A check piece is also provided inside the outer cylinder, and the check piece is arranged between the liquid storage part and the working part. The check piece includes a fixing ring, and a plurality of elastic tongues facing one side of the liquid storage part are provided on the inner side of the fixing ring.

8. The umbrella grip syringe according to claim 7, characterized in that: The fixing ring is an annular sheet structure, and a plurality of the elastic tongues are evenly arranged on the fixing ring with an angle between them. The elastic tongues are an arc structure with an outer arc surface facing the center of the outer cylinder.

9. The umbrella grip syringe according to claim 1, characterized in that: The liquid storage capsule includes a liquid tube whose shape fits the inner wall of the liquid storage cylinder. The front end of the liquid tube has a conical liquid outlet. The tail of the liquid tube is provided with a capsule piston. A plurality of supporting ribs are provided between the capsule piston and the liquid tube. The injection needle is installed on the outer cylinder or the liquid tube.

10. The umbrella grip syringe according to claim 1, characterized in that: An outer cover is arranged at the tail of the outer cylinder, and the outer cover is buckled and installed with the outer cylinder through a hinge.

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