Low-pressure pneumatic injection combination instrument

Abstract

The utility model discloses a low-pressure pneumatic injection combination instrument which comprises a combination instrument body, an air pump, a syringe and a channel, an adjusting frame is arranged on one side of the top of the combination instrument body, a controller is arranged on the adjusting frame, and the syringe is arranged on the side, away from the controller, of the adjusting frame. A medicine barrel is arranged on the other side of the top of the combination instrument main body, the interior of the medicine barrel is connected with a syringe through a medicine guide pipe, an air pump is arranged at the top of the medicine barrel, a channel is formed in the bottom of the syringe, the bottom end of the syringe communicates with the channel through a reserved opening, a needle head is arranged at the bottom end of the channel, and an air outlet is formed in the top of the needle head. And a plugging ball is arranged at the bottom end in the channel through a second reset spring. The combined instrument is provided with the combined instrument main body, the controller, the injection tube, the channel, the needle head, the medicine barrel, the air pump, the medicine guide tube and the air guide tube, so that residual medicine in the injection tube is prevented from dripping to pollute a working table.

Description

TECHNICAL FIELD

[0001] The utility model relates to biological medical instrument technical field, concretely is a low pressure pneumatic injection combination appearance. BACKGROUND

[0002] Low pressure pneumatic injection combination appearance is a kind of professional equipment combining pneumatic technology and injection technology, usually for the precise injection task in life science, medical research, drug development and laboratory environment, it utilizes compressed air as power source, realizes pressure regulation and flow control in injection process by accurate air pressure control system, and this kind of equipment has the characteristics such as simple operation, high precision, good stability.

[0003] In low pressure pneumatic injection combination appearance, after compressed air is accurately regulated by air pressure control system, low pressure air generated by gas source is used to push piston to move, liquid or drug in injection cylinder is slowly and stably pushed out, and is injected into target position by needle, but drug residue is prone to appear in injection cylinder, and residual drug is prone to drip under the action of gravity after injection is finished, can produce pollution to workbench, and influence subsequent injection work. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of low pressure pneumatic injection combination appearance to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of low pressure pneumatic injection combination appearance, including combination appearance main body, air pump, injection cylinder and passageway, the one side of the top of combination appearance main body is provided with adjusting frame, and controller is arranged on the adjusting frame, the side of the adjusting frame away from controller is provided with injection cylinder, the other side of the top of combination appearance main body is provided with medicine barrel, and the inside of medicine barrel is connected with injection cylinder by medicine guide pipe, the top of medicine barrel is provided with air pump, and the output end of air pump is connected with the top of injection cylinder by air guide pipe, the top of the inside of injection cylinder is evenly provided with piston by first return spring, the bottom of injection cylinder is provided with passageway, and the bottom end of injection cylinder is communicated with passageway by reserved port, the bottom end of passageway is provided with needle, the bottom end in the inside of passageway is provided with blocking ball by second return spring.

[0006] Preferably, the inside of the adjusting frame is provided with lead screw, and driving block is sleeved on the lead screw, and one side of the driving block is connected with the injection cylinder.

[0007] Preferably, the top of the adjusting frame is fixed with rotary drive mechanism, and the output end of rotary drive mechanism is connected with lead screw.

[0008] Preferably, the outside of the reserved port is provided with sealing element, and the sealing element adopts rubber sealing ring of annular structure.

[0009] Preferably, the two ends of the piston are provided with first guide blocks, and the inside of the injection cylinder is provided with first guide grooves on both sides.

[0010] Preferably, the two sides of the sealing ball are provided with second guide blocks, and the inside of the channel is provided with second guide grooves matched with the second guide blocks on both sides.

[0011] Compared with the prior art, the low-pressure pneumatic injection combination instrument has the beneficial effects that: the low-pressure pneumatic injection combination instrument is provided with a combination instrument main body, a controller, an injection cylinder, a channel, a needle, a medicine barrel, an air pump, a medicine guide pipe and an air guide pipe, medicine in the medicine barrel enters the injection cylinder through the medicine guide pipe, the air pump guides compressed air into the injection cylinder and drives the piston to move, along with the movement of the piston, the liquid or medicine in the injection cylinder is slowly and stably pushed into the channel, the medicine extrudes the sealing ball in the channel, so that the sealing ball extrudes the second return spring, and at the same time, the medicine is injected into a target position through the needle, after the injection is completed, the sealing ball moves upward and resets under the action of the second return spring, the reserved port is closed, and the residual medicine in the injection cylinder is prevented from dropping to pollute the workbench. BRIEF DESCRIPTION OF DRAWINGS

[0012] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments, and it should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation to the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0013] Figure 1 It is a front view of the sectional structure of the present application.

[0014] Figure 2 It is a sectional structure schematic diagram of the injection cylinder of the present application.

[0015] Figure 3 It is a sectional structure schematic diagram of the present application. Figure 2 It is an enlarged structure schematic diagram of A in the present application.

[0016] Figure 4 It is an enlarged structure schematic diagram of B in the present application. Figure 2 It is an enlarged structure schematic diagram of B in the present application.

[0017] In the figure: 1, the main body of the combination instrument; 2, the medicine barrel; 3, the air pump; 4, the medicine guide pipe; 5, the air guide pipe; 6, the injection cylinder; 7, the rotary drive mechanism; 8, the lead screw; 9, the drive block; 10, the adjusting frame; 11, the first reset spring; 12, the reserved port; 13, the sealing element; 14, the channel; 15, the needle; 16, the piston; 17, the first guide groove; 18, the first guide block; 19, the blocking ball; 20, the second guide groove; 21, the second reset spring; 22, the second guide block; 23, the controller. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor belong to the scope of protection of the utility model.

[0019] Please refer to Figures 1-4 The utility model provides an embodiment: a low pressure pneumatic injection combination instrument, including combination instrument main body 1, air pump 3, injection cylinder 6 and channel 14, one side of the top of combination instrument main body 1 is provided with adjusting frame 10, and adjusting frame 10 is provided with controller 23, and the side, away from controller 23 of adjusting frame 10, is provided with injection cylinder 6, and the medicine container is placed below injection cylinder 6;

[0020] The inside of adjusting frame 10 is provided with lead screw 8, and drive block 9 is sleeved on lead screw 8, and one side of drive block 9 is connected with injection cylinder 6;

[0021] The top of adjusting frame 10 is fixed with rotary drive mechanism 7, and the output end of rotary drive mechanism 7 is connected with lead screw 8;

[0022] Rotary drive mechanism 7 drives lead screw 8 to rotate, makes drive block 9 move up and down along lead screw 8, thereby adjusting the distance between injection cylinder 6 and the medicine container, and it is favorable to adjust the height of injection cylinder 6 according to the specification of the medicine container;

[0023] The other side of the top of combination instrument main body 1 is provided with medicine barrel 2, and the inside of medicine barrel 2 is connected with injection cylinder 6 through medicine guide pipe 4, and the medicine in medicine barrel 2 enters injection cylinder 6 through medicine guide pipe 4, and pump body is arranged on medicine guide pipe 4;

[0024] The top of medicine barrel 2 is provided with air pump 3, and the output end of air pump 3 is connected with the top of injection cylinder 6 through air guide pipe 5, and the top end in the inside of injection cylinder 6 is evenly provided with piston 16 through first reset spring 11;

[0025] After air pump 3 is accurately adjusted through the air pressure control system in controller 23, the low pressure air generated by the air source is introduced into injection cylinder 6 and piston 16 is moved;

[0026] The first guide block 18 is arranged at both ends of the piston 16, and the first guide groove 17 is arranged at both sides in the injection cylinder 6 to guide and limit the piston 16;

[0027] The channel 14 is arranged at the bottom of the injection cylinder 6, and the bottom end of the injection cylinder 6 is communicated with the channel 14 through the reserved port 12. The needle 15 is arranged at the bottom end of the channel 14. The bottom end in the channel 14 is provided with the blocking ball 19 through the second reset spring 21.

[0028] With the movement of the piston 16, the medicine in the injection cylinder 6 is slowly and stably pushed into the channel 14. The medicine extrudes the blocking ball 19 in the channel 14, so that the blocking ball 19 extrudes the second reset spring 21, and at the same time, the medicine is injected into the target position through the needle 15.

[0029] After the injection is completed, the blocking ball 19 moves upward and resets under the action of the second reset spring 21, so as to close the reserved port 12 and prevent the residual medicine in the injection cylinder 6 from dropping and polluting the workbench.

[0030] The outer side of the reserved port 12 is provided with the sealing element 13, and the sealing element 13 is a rubber sealing ring with an annular structure, which can ensure the sealing property and improve the blocking effect.

[0031] The second guide block 22 is arranged at both sides of the blocking ball 19, and the second guide groove 20 matched with the second guide block 22 is arranged at both sides in the channel 14, so that the blocking ball 19 is not easy to deviate.

[0032] The specific model and specification of the rotary driving mechanism 7, the air pump 3 and the controller 23 need to be determined according to the specification parameters and the like of the device. The selection calculation method is the prior art, and thus will not be described in detail.

[0033] Working principle: in use, the medicine container is placed below the needle 15. Then the rotary driving mechanism 7 drives the screw rod 8 to rotate, so that the driving block 9 moves up and down along the screw rod 8, thereby adjusting the distance between the needle 15 and the medicine container. The medicine in the medicine barrel 2 enters the injection cylinder 6 through the medicine guide pipe 4. After accurate adjustment by the air pressure control system in the controller 23, the air pump 3 guides the low-pressure air generated by the air source into the injection cylinder 6 and drives the piston 16 to move. With the movement of the piston 16, the medicine in the injection cylinder 6 is slowly and stably pushed into the channel 14. The medicine extrudes the blocking ball 19 in the channel 14, so that the blocking ball 19 extrudes the second reset spring 21, and at the same time, the medicine is injected into the target position through the needle 15. After the injection is completed, the blocking ball 19 moves upward and resets under the action of the second reset spring 21, so as to close the reserved port 12 and prevent the residual medicine in the injection cylinder 6 from dropping and polluting the workbench.

[0034] Obviously, the above-described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the protection scope of the present application.

[0035] It is to be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, devices, components and / or combinations thereof, but do not preclude the presence or addition of one or more other features, steps, operations, devices, components and / or combinations thereof.

[0036] It should be noted that the terms "first", "second", and the like, used in the specification and the claims of the application and the above-described drawings are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the application described herein can be implemented in an order other than those illustrated or described herein.

[0037] The above only is the preferred embodiment of the present application, and does not limit the present application. For those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A low pressure pneumatic injection assembly characterized by, The utility model provides a kind of injection device, including combination instrument body (1), air pump (3), syringe (6) and passage (14), the one side of the top of combination instrument body (1) is provided with adjusting frame (10), and controller (23) is provided on the adjusting frame (10), the side of the adjusting frame (10) away from controller (23) is provided with syringe (6), the other side of the top of combination instrument body (1) is provided with medicine barrel (2), and the inside of medicine barrel (2) is connected with syringe (6) by medicine guide pipe (4), the top of medicine barrel (2) is provided with air pump (3), and the output of air pump (3) is connected with the top of syringe (6) by air guide pipe (5), the top of the inside of syringe (6) is evenly provided with piston (16) by first reset spring (11), the bottom of syringe (6) is provided with passage (14), and the bottom of syringe (6) is communicated with passage (14) by reservation mouth (12), the bottom of passage (14) is provided with needle (15), the bottom of the inside of passage (14) is provided with blocking ball (19) by second reset spring (21).

2. A low pressure pneumatic injection combination according to claim 1, characterized in that: The inside of the adjusting frame (10) is provided with lead screw (8), and the drive block (9) is sleeved on the lead screw (8), one side of the drive block (9) is connected with the syringe (6).

3. A low pressure pneumatic injection combination according to claim 2, characterized in that: The top of the adjusting frame (10) is fixed with rotary drive mechanism (7), and the output of rotary drive mechanism (7) is connected with lead screw (8).

4. A low pressure pneumatic injection combination according to claim 1, characterized in that: The outside of the reservation mouth (12) is provided with sealing element (13), and the sealing element (13) adopts annular structure rubber sealing ring.

5. A low pressure pneumatic injection combination according to claim 1, characterized in that: Both ends of the piston (16) are provided with first guide block (18), and both sides of the inside of the syringe (6) are provided with first guide slot (17).

6. A low pressure pneumatic injection combination according to claim 1, characterized in that: Both sides of the blocking ball (19) are provided with second guide block (22), and both sides of the inside of the passage (14) are provided with second guide slot (20) matched with second guide block (22).

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