Air bag type infusion and aspiration device

Abstract

The utility model relates to an air bag type infusion-aspiration device which comprises an infusion-aspiration barrel, an infusion-aspiration needle and an elastic air bag, the first end of the infusion-aspiration barrel is connected with the infusion-aspiration needle, the second end of the infusion-aspiration barrel is sleeved with the elastic air bag, and pressure in the infusion-aspiration barrel is changed by pressing the elastic air bag in a matched mode. The air bag type injection and suction device can inject medicine into an intraocular cavity or sample from the intraocular cavity, is simple in structure, light and labor-saving in suction and injection, convenient to operate stably, uniform in suction and injection speed and capable of greatly improving safety during operation.

Description

Technical Field

[0001] The utility model relates to the technical field of medical appliances, in particular to an air bag type insufflator. Background Art

[0002] The full name of ophthalmology is "eye disease specialist". It is a discipline that studies diseases occurring in the visual system, including the eyeball and its associated tissues. It generally studies various eye diseases such as vitreous body, retinal diseases, optometry, glaucoma, optic neuropathy and cataracts.

[0003] When injecting or sampling into the intraocular cavity, an injector is usually required to operate. However, existing injectors are all straight-push syringes with a rubber plug at the front end of the core rod. When injecting or aspirating, the operator needs to apply a large force to push the core rod to move in the syringe to complete the injection or aspiration, which is inconvenient for the operator to complete the operation. At the same time, the injector is prone to shaking during the force application process, resulting in uneven injection speed or sampling speed. Utility Model Content

[0004] Based on this, it is necessary to provide a kind of air bag type insufflator.

[0005] The technical solution of the utility model to solve the above technical problems is as follows:

[0006] An air bag type insufflator, comprising:

[0007] An injection-absorption cylinder body, wherein a receiving cavity is formed in the injection-absorption cylinder body, and the receiving cavity is arranged through both ends of the injection-absorption cylinder body;

[0008] An injection-absorption needle, wherein an injection-absorption channel is provided in the injection-absorption needle, the injection-absorption needle is movably connected to the first end of the injection-absorption cylinder, and the injection-absorption channel is communicated with the accommodating chamber;

[0009] An elastic air bag is sleeved on the second end of the injection-absorption cylinder.

[0010] In one embodiment, the airbag-type insufflator further comprises: a needle shield, wherein the needle shield is movably mounted on the insufflator needle.

[0011] In one embodiment, the injection and aspiration needle is provided with a needle handle, a connecting cavity is opened on the needle handle, a connecting portion is protrudingly provided on the first end of the injection and aspiration cylinder, and the connecting portion is embedded in the connecting cavity.

[0012] In one embodiment, a limiting block is disposed on the outer surface of the connecting portion, a first limiting groove is formed on the side wall of the connecting cavity, and the limiting block is embedded in the first limiting groove.

[0013] In one embodiment, a limiting ring is provided on the second end of the injection-suction cylinder body, and a second limiting groove is opened on the inner wall of the elastic airbag. When the elastic airbag is sleeved on the second end of the injection-suction cylinder body, the limiting ring is embedded in the second limiting groove.

[0014] In one embodiment, the number of the limiting rings is set to be multiple, and the number of the second limiting grooves is equal to the number of the limiting rings.

[0015] In one embodiment, the width of the first end of the accommodating cavity is smaller than the width of the second end of the accommodating cavity.

[0016] In one embodiment, a flow limiting portion is provided on the second end of the injection and suction cylinder body, a flow limiting cavity is provided in the flow limiting portion, and the width of the flow limiting cavity is greater than the width of the accommodating cavity.

[0017] In one embodiment, a plurality of friction ridges are provided on the injection and suction cylinder.

[0018] In one embodiment, an indicator mark is provided on the injection and suction cylinder.

[0019] The beneficial effects of the utility model are as follows: the utility model provides an airbag-type injection-aspirator, which is connected to an injection-aspirator needle on the first end of the injection-aspirator cylinder body, and is sleeved with an elastic airbag on the second end of the injection-aspirator cylinder body. The elastic airbag is pressed to change the pressure in the injection-aspirator cylinder body, so as to inject medicine into the intraocular cavity or take samples from the intraocular cavity. The airbag-type injection-aspirator has a simple structure, and suction and injection are light and labor-saving, easy to operate smoothly, and the suction and injection speeds are uniform, which greatly improves the safety during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 A schematic diagram of the structure of an air bag type insufflator according to an embodiment;

[0022] Figure 2 A schematic diagram of the structure of an air bag type insufflator according to an embodiment;

[0023] Figure 3 The figure is a schematic diagram of the three-dimensional exploded structure of an air bag type insufflator according to one embodiment.

[0024] In the accompanying drawings, 10, air bag type insufflation and aspiration device; 100, insufflation and aspiration cylinder; 101, accommodating chamber; 110, connecting part; 200, insufflation and aspiration needle; 210, needle handle; 211, connecting chamber; 300, elastic air bag; 400, needle sheath; 500, indicator mark. DETAILED DESCRIPTION

[0025] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present invention can be combined with each other. The technical solution of the present invention will be further described below in conjunction with the drawings of the embodiments of the present invention, and the present invention is not limited to the following specific implementation methods.

[0026] It should be understood that the same or similar numbers in the drawings of the embodiments correspond to the same or similar parts. In the description of the present utility model, it should be understood that if there are terms such as "upper", "lower", "front", "back", "left", "right", "top", "bottom" and the like indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0027] In one embodiment, Figure 1 , Figure 2 and Figure 3 As shown, an airbag type injection and suction device 10 includes: an injection and suction cylinder body 100, an injection and suction needle 200 and an elastic airbag 300, the injection and suction cylinder body 100 is provided with a accommodating cavity 101, the accommodating cavity 101 is arranged through both ends of the injection and suction cylinder body 100, the injection and suction channel is provided in the injection and suction needle 200, the injection and suction needle 200 is movably connected to the first end of the injection and suction cylinder body 100, the injection and suction channel is connected with the accommodating cavity 101, and the elastic airbag 300 is sleeved on the second end of the injection and suction cylinder body 100.

[0028] In this embodiment, an injection and aspiration needle 200 is connected to the first end of the injection and aspiration cylinder body 100, and the injection and aspiration channel in the injection and aspiration needle 200 is connected to the accommodating cavity 101 of the injection and aspiration cylinder body 100. An elastic air bag 300 is sleeved on the second end of the injection and aspiration cylinder body 100. By pressing the elastic air bag 300 to change the pressure in the injection and aspiration cylinder body 100, it is possible to inject medicine into the intraocular cavity or take samples from the intraocular cavity. The air bag type injection and aspiration device 10 has a simple structure, and suction and injection are light and labor-saving, easy to operate smoothly, and the suction and injection speeds are uniform, which greatly improves the safety during operation.

[0029] In this embodiment, the injection and suction needle 200 is movably connected to the injection and suction cylinder 100, which is convenient for replacing needles of different specifications and can well complete the relevant medication or sampling operations for various ophthalmic diseases. For example, it can be used to inject or discharge liquid into the anterior chamber, to inject or sample into the vitreous cavity, and can also be used to aspirate the expanded liquefied cortex of the lens.

[0030] In one embodiment, Figure 2 and Figure 3 As shown, the airbag insufflation and aspiration device 10 further includes: a needle shield 400, which is movably sleeved on the insufflation and aspiration needle 200. Specifically, the needle shield 400 can isolate the insufflation and aspiration needle 200 from the external environment, provide good sealing, protect the insufflation and aspiration needle 200, and prevent the insufflation and aspiration needle 200 from being damaged. At the same time, it can also prevent the insufflation and aspiration needle 200 from being contaminated, improve the hygiene of the airbag insufflation and aspiration device 10, and ensure the normal use of the airbag insufflation and aspiration device 10.

[0031] In one embodiment, Figure 3 As shown, the injection-absorption needle 200 is provided with a needle handle 210, and a connecting cavity 211 is opened on the needle handle 210. A connecting portion 110 is protrudingly provided on the first end of the injection-absorption cylinder 100, and the connecting portion 110 is embedded in the connecting cavity 211. Specifically, the injection-absorption needle 200 is sleeved on the connecting portion 110 of the injection-absorption cylinder 100 through the connecting cavity 211 on the needle handle 210, so that the injection-absorption needle 200 and the injection-absorption cylinder 100 can be detachably connected. The connecting cavity 211 of the needle handle 210 is communicated with the injection-absorption channel of the injection-absorption needle 200, and the accommodating cavity 101 of the injection-absorption cylinder 100 is correspondingly arranged through both ends of the connecting portion 110, so that the injection-absorption channel and the accommodating cavity 101 are ensured to be connected while the injection-absorption needle 200 is detachably connected.

[0032] In one embodiment, a limiting block is provided on the outer surface of the connecting portion 110, and a first limiting groove is provided on the side wall of the connecting cavity 211, and the limiting block is embedded in the first limiting groove. Specifically, the number of limiting blocks is set to be multiple, the number of first limiting grooves is equal to the number of limiting blocks, each limiting block is evenly distributed on the outer surface of the connecting portion 110, and each first limiting groove is evenly distributed on the side wall of the connecting cavity 211. When the connecting portion 110 is embedded in the connecting cavity 211, each limiting block is embedded in a first limiting groove, which can increase the contact area between the needle handle 210 and the connecting portion 110, so that the injection-absorption needle 200 can be better installed on the injection-absorption cylinder 100.

[0033] In one embodiment, a limiting ring is provided on the second end of the injection-absorption cylinder body 100, and a second limiting groove is provided on the inner side wall of the elastic airbag 300. When the elastic airbag 300 is sleeved on the second end of the injection-absorption cylinder body 100, the limiting ring is embedded in the second limiting groove. Specifically, the limiting ring protruding on the second end of the injection-absorption cylinder body 100 is matched and connected with the second limiting groove on the inner side wall of the elastic airbag 300, which not only enables the elastic airbag 300 to be stably installed on the second end of the injection-absorption cylinder body 100, but also improves the airtightness between the elastic airbag 300 and the injection-absorption cylinder body 100. Furthermore, the number of the limiting rings is set to be multiple, and the number of the second limiting grooves is equal to the number of the limiting rings, which can be installed more stably and maintain good airtightness.

[0034] In one embodiment, the width of the first end of the accommodating cavity 101 is smaller than the width of the second end of the accommodating cavity 101. Specifically, along the direction from the first end to the second end of the accommodating cavity 101, that is, along the direction from the first end to the second end of the injection-absorption cylinder body 100, the width of the accommodating cavity 101 gradually increases, which can slow down the rising speed of the drug solution in the accommodating cavity 101 and prevent the drug solution from flowing into the elastic airbag 300.

[0035] In one embodiment, a flow limiting portion is provided on the second end of the injection-absorption cylinder body 100, and a flow limiting cavity is provided in the flow limiting portion, and the width of the flow limiting cavity is greater than the width of the accommodating cavity 101. Specifically, by providing the flow limiting portion at the second end of the injection-absorption cylinder body 100, the liquid can be effectively prevented from moving into the elastic capsule during suction. When placed flat, the flow limiting portion can also serve as a support, that is, the end of the injection-absorption cylinder body 100 provided with the elastic capsule is higher than the end provided with the injection-absorption needle 200, so that the liquid in the injection-absorption cylinder body 100 can be prevented from flowing back into the elastic capsule.

[0036] In one embodiment, a plurality of friction convex patterns are provided on the injection-absorption cylinder body 100. Specifically, each friction convex pattern is evenly distributed on one side of the injection-absorption cylinder body 100, which can increase the friction between the operator's hand and the injection-absorption cylinder body 100, and is conducive to the operator holding the airbag-type injection-absorption device 10 stably.

[0037] In one embodiment, Figure 3 As shown, the injection and suction cylinder body 100 is provided with an indicator mark 500. Specifically, the indicator mark 500 is arranged on the outer surface of the injection and suction cylinder body 100 to play the role of indication. For example, the indicator mark 500 is a scale line for indicating the volume of the liquid in the injection and suction cylinder body 100.

[0038] Compared with the prior art, the utility model has at least the following advantages:

[0039] The utility model provides an air bag type injection and aspiration device, which has an injection and aspiration needle connected to the first end of the injection and aspiration cylinder body, and an elastic air bag is sleeved on the second end of the injection and aspiration cylinder body. The elastic air bag is pressed to change the pressure in the injection and aspiration cylinder body, so that medicine can be injected into the intraocular cavity or samples can be taken from the intraocular cavity. The air bag type injection and aspiration device has a simple structure, and suction and injection are light and labor-saving, easy to operate smoothly, and the suction and injection speeds are uniform, which greatly improves the safety during operation.

[0040] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not intended to limit the implementation methods of the utility model. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. An air bag type insufflator, characterized in that: include: An injection-absorption cylinder body, wherein a receiving cavity is formed in the injection-absorption cylinder body, and the receiving cavity is arranged through both ends of the injection-absorption cylinder body; An injection-absorption needle, wherein an injection-absorption channel is provided in the injection-absorption needle, the injection-absorption needle is movably connected to the first end of the injection-absorption cylinder, and the injection-absorption channel is communicated with the accommodating chamber; An elastic air bag is sleeved on the second end of the injection-absorption cylinder.

2. The air bag type insufflator according to claim 1, characterized in that: Also includes: A needle shield is movably sleeved on the injection and aspiration needle.

3. The air bag type insufflator according to claim 1, characterized in that: The injection and aspiration needle head is provided with a needle handle, and a connecting cavity is opened on the needle handle. A connecting portion is protrudingly provided on the first end of the injection and aspiration cylinder body, and the connecting portion is embedded in the connecting cavity.

4. The air bag type insufflator according to claim 3, characterized in that: A limiting block is arranged on the outer surface of the connecting portion, a first limiting groove is opened on the side wall of the connecting cavity, and the limiting block is embedded in the first limiting groove.

5. The air bag type insufflator according to claim 1, characterized in that: A limiting ring is arranged on the second end of the injection-absorption cylinder body, and a second limiting groove is opened on the inner side wall of the elastic airbag. When the elastic airbag is sleeved on the second end of the injection-absorption cylinder body, the limiting ring is embedded in the second limiting groove.

6. The air bag type insufflator according to claim 5, characterized in that: The number of the limiting rings is set to be multiple, and the number of the second limiting grooves is equal to the number of the limiting rings.

7. The air bag type insufflator according to claim 1, characterized in that: The width of the first end of the accommodating cavity is smaller than the width of the second end of the accommodating cavity.

8. The air bag type insufflator according to claim 7, characterized in that: A flow limiting portion is arranged on the second end of the injection and suction cylinder body, a flow limiting cavity is arranged in the flow limiting portion, and the width of the flow limiting cavity is greater than the width of the accommodating cavity.

9. The air bag type insufflator according to claim 1, characterized in that: A plurality of friction convex patterns are arranged on the injection and suction cylinder body.

10. The air bag type insufflator according to claim 1, characterized in that: The injection and suction cylinder body is provided with an indication mark.

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