Totally-closed negative pressure dosing device

Abstract

The utility model relates to the technical field of medical instruments, in particular to a totally-closed negative pressure dosing device which comprises a dosing device body, a vacuum pump, a vacuum display meter, an electric pressure release valve, a vacuum opening and a lower mounting block are fixedly mounted on the outer side of the dosing device body, and a conveying pipe is fixedly arranged at the end, away from the dosing device body, of the vacuum opening. A medicine feeding head is fixedly mounted at one end of the conveying pipe, a fastening screw rod is rotatably arranged on the outer side surface of the lower mounting block, a fastening block is arranged on the outer side of the fastening screw rod in a threaded sleeving mode, a top cover is arranged at the top of the medicine feeding device body, and upper mounting blocks are fixedly mounted on the outer side surface of the top cover; a sealing mechanism is arranged between the top cover and the dosing device body, by means of the totally-closed negative-pressure dosing device, the structural design in the sealing mechanism is utilized, then a sealed environment is formed in the dosing device body, the negative-pressure state of the dosing device body is guaranteed, and subsequent control over the dosing amount is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a fully enclosed negative pressure drug delivery device. Background Art

[0002] During the treatment process, a drug delivery device is needed to supply drugs to the patient to meet the patient's treatment needs.

[0003] A fully enclosed negative pressure drug delivery device currently in use has a poor sealing effect inside, which makes it impossible to form a closed space inside the drug delivery device, thereby affecting the negative pressure state inside the drug delivery device, making it impossible to accurately control the dosage, which is not conducive to subsequent safe use.

[0004] In summary, the present invention solves the problems in the above-mentioned background technology by designing a fully enclosed negative pressure drug delivery device. Utility Model Content

[0005] The purpose of the present invention is to provide a fully enclosed negative pressure drug delivery device to solve the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A fully enclosed negative pressure drug delivery device, comprising a drug delivery device body, on the outer side of which are fixedly mounted a vacuum pump, a vacuum display gauge, an electric pressure relief valve, a vacuum port and a lower mounting block, a delivery pipe fixedly mounted on one end of the vacuum port away from the drug delivery device body, a drug delivery head fixedly mounted on one end of the delivery pipe, a fastening screw rotatably mounted on the outer side surface of the fastening screw, a fastening block provided on the outer thread sleeve of the fastening screw, a top cover provided on the top of the drug delivery device body, upper mounting blocks fixedly mounted on the outer side surfaces of the top cover, and a sealing mechanism provided between the top cover and the drug delivery device body;

[0008] The sealing mechanism includes a synchronous electric push rod, a sealing pressure plate and an annular block. The synchronous electric push rod is fixedly installed on the top surface of the top cover, the sealing pressure plate is arranged at the bottom of the top cover, and a sealing ring is fixedly installed on the bottom of the sealing pressure plate. The annular block is fixedly set on the inner surface of the dispenser body, and a groove is opened on its top surface.

[0009] As a preferred solution of the present invention, the input end of the vacuum pump and the input end of the electric pressure relief valve both extend into the interior of the drug dispenser body.

[0010] As a preferred solution of the present invention, the lower mounting block is symmetrically distributed front to back with respect to the outer surface of the applicator body, and the upper mounting block is located directly above the lower mounting block.

[0011] As a preferred solution of the present invention, an adapting groove matching the fastening screw is provided on the outer surface of the upper mounting block, and the bottom of the fastening block is frictionally arranged and in frictional contact with the top surface of the upper mounting block.

[0012] As a preferred solution of the present invention, the telescopic end of the synchronous electric push rod passes through the top surface of the top cover and is fixed to the top surface of the sealing pressure plate.

[0013] As a preferred solution of the present invention, the bottom surface of the sealing pressure plate is in contact with the bottom end surface of the annular block.

[0014] As a preferred solution of the present invention, the cross-section of the groove is an annular structure, and the inner wall of the groove is in sealing contact with the outer surface of the sealing ring.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] In the utility model, a fully enclosed negative pressure drug delivery device is set up, and the structural design in the sealing mechanism is utilized. Under the drive of the synchronous electric push rod, the sealing pressure plate is brought into contact with the annular block. At the same time, the sealing combination of the sealing ring and the groove forms an effective sealing connection, thereby forming a closed environment inside the drug delivery device body, ensuring its negative pressure state, facilitating the subsequent control of the drug delivery amount, and facilitating the safe use of the drug delivery device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 For the utility model Figure 1 A schematic diagram of the enlarged structure of point A;

[0019] Figure 3 This is a schematic diagram of the partially exploded structure of the sealing mechanism of the utility model;

[0020] Figure 4 This is a schematic diagram of the internal structure of the main body of the drug dispenser of the present invention.

[0021] In the figure: 1. Dosing device body; 2. Vacuum pump; 3. Vacuum display; 4. Electric pressure relief valve; 5. Vacuum port; 501. Delivery pipe; 502. Dosing head; 6. Lower mounting block; 601. Fastening screw; 602. Fastening block; 7. Top cover; 701. Upper mounting block; 8. Sealing mechanism; 801. Synchronous electric push rod; 802. Sealing pressure plate; 803. Ring block; 804. Sealing ring; 805. Groove. DETAILED DESCRIPTION

[0022] The following will combine the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0023] To facilitate understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings, and several embodiments of the present invention are given. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0024] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are for the purpose of describing specific embodiments only and are not intended to limit this invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0026] For examples, see Figure 1-4 , the utility model provides a technical solution:

[0027] A fully enclosed negative pressure drug delivery device, comprising a drug delivery device body 1, on the outside of which are fixedly mounted a vacuum pump 2, a vacuum display gauge 3, an electric pressure relief valve 4, a vacuum port 5, and a lower mounting block 6; a delivery tube 501 is fixedly mounted at one end of the vacuum port 5 away from the drug delivery device body 1; a drug delivery head 502 is fixedly mounted at one end of the delivery tube 501; a fastening screw 601 is rotatably mounted on the outer surface of the lower mounting block 6; a fastening block 602 is provided on the outer thread of the fastening screw 601; a top cover 7 is provided on the top of the drug delivery device body 1; upper mounting blocks 701 are fixedly mounted on the outer surfaces of the top cover 7; and a sealing mechanism 8 is provided between the top cover 7 and the drug delivery device body 1;

[0028] Specifically, the input end of the vacuum pump 2 and the input end of the electric pressure relief valve 4 both extend to the interior of the drug delivery device body 1;

[0029] In this embodiment, the vacuum pump 2 is mainly used to extract the air inside the drug dispensing device body 1, so that a negative pressure environment is formed inside the drug dispensing device body 1. The vacuum display meter 3 is mainly used to monitor the internal pressure to ensure the stability of the negative pressure state. The electric pressure relief valve 4 is used to release the internal pressure of the drug dispensing device body 1, thereby meeting the needs of users.

[0030] Specifically, the lower mounting block 6 is symmetrically distributed front to back with respect to the outer surface of the applicator body 1, the upper mounting block 701 is located directly above the lower mounting block 6, and the outer surface of the upper mounting block 701 is provided with an adapter groove that matches the fastening screw 601, and the bottom of the fastening block 602 is frictionally arranged and in frictional contact with the top surface of the upper mounting block 701;

[0031] In this embodiment, the threaded fit between the fastening screw 601 and the fastening block 602 enables the fastening block 602 to contact and form a fastened connection with the upper mounting block 701, thereby achieving the effect of fixing the top cover 7 and the applicator body 1.

[0032] In this embodiment, please refer to Figure 1 、 Figure 3 and Figure 4 The sealing mechanism 8 includes a synchronous electric push rod 801, a sealing pressure plate 802 and an annular block 803. The synchronous electric push rod 801 is fixedly mounted on the top surface of the top cover 7, the sealing pressure plate 802 is arranged at the bottom of the top cover 7, a sealing ring 804 is fixedly mounted on the bottom of the sealing pressure plate 802, and the annular block 803 is fixedly arranged on the inner surface of the applicator body 1, and a groove 805 is opened on its top surface;

[0033] Specifically, the telescopic end of the synchronous electric push rod 801 passes through the top surface of the top cover 7 and is fixed to the top surface of the sealing pressure plate 802. The bottom surface of the sealing pressure plate 802 contacts the bottom end surface of the annular block 803. The cross-sectional shape of the groove 805 is annular, and the inner wall of the groove 805 is in sealing contact with the outer surface of the sealing ring 804.

[0034] In this embodiment, the sealing pressure plate 802 is driven by the setting of the synchronous electric push rod 801 to achieve the fitting of the sealing pressure plate 802 and the annular block 803, and the setting of the groove 805 is mainly used to form a sealing contact with the sealing ring 804, thereby improving the sealing effect between the sealing pressure plate 802 and the annular block 803 and meeting the sealing requirements of the dispenser.

[0035] The working process of the present utility model is as follows: when using a fully enclosed negative pressure drug delivery device, the top cover 7 is first moved to make it close to the top of the drug delivery device body 1. During the close process, ensure that the upper mounting block 701 is located directly above the lower mounting block 6. At this time, the fastening screw 601 can be rotated to make the fastening screw 601 contact with the upper mounting block 701, and then the fastening block 602 is rotated until the fastening block 602 forms a fastening contact with the upper mounting block 701, thereby completing the installation of the top cover 7, and then the synchronous electric push rod 801 is rotated. Start, and then the telescopic end of the synchronous electric push rod 801 begins to move downward and drives the sealing pressure plate 802 to contact the annular block 803, and at the same time the sealing ring 804 gradually fits tightly with the inner wall of the groove 805, so that an effective closed environment is formed inside the main body 1 of the drug dispenser. Finally, the interior of the main body 1 of the drug dispenser can be evacuated by the vacuum pump 2 to form a negative pressure environment, and the vacuum display meter 3 is used to monitor the internal pressure. The precise supply of medicine can be achieved through the vacuum port 5, the delivery tube 501 and the drug delivery head 502, thereby improving the practical effect of the drug dispenser.

[0036] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fully enclosed negative pressure drug delivery device, comprising a drug delivery device body (1), characterized in that: The outer side of the drug dispensing device body (1) is respectively fixedly mounted with a vacuum pump (2), a vacuum display gauge (3), an electric pressure relief valve (4), a vacuum port (5) and a lower mounting block (6); the vacuum port (5) is fixedly mounted with a delivery pipe (501) at one end away from the drug dispensing device body (1); a drug dispensing head (502) is fixedly mounted at one end of the delivery pipe (501); a fastening screw (601) is rotatably mounted on the outer surface of the lower mounting block (6); a fastening block (602) is provided on the outer thread sleeve of the fastening screw (601); a top cover (7) is provided on the top of the drug dispensing device body (1); an upper mounting block (701) is respectively fixedly mounted on the outer surface of the top cover (7); a sealing mechanism (8) is provided between the top cover (7) and the drug dispensing device body (1); The sealing mechanism (8) includes a synchronous electric push rod (801), a sealing pressure plate (802) and an annular block (803), wherein the synchronous electric push rod (801) is fixedly mounted on the top surface of the top cover (7), the sealing pressure plate (802) is arranged at the bottom of the top cover (7), a sealing ring (804) is fixedly mounted on the bottom of the sealing pressure plate (802), and the annular block (803) is fixedly mounted on the inner surface of the dispenser body (1), and a groove (805) is provided on its top surface.

2. A fully enclosed negative pressure drug delivery device according to claim 1, characterized in that: The input end of the vacuum pump (2) and the input end of the electric pressure relief valve (4) both extend into the interior of the drug dispenser body (1).

3. A fully enclosed negative pressure drug delivery device according to claim 1, characterized in that: The lower mounting block (6) is symmetrically distributed front to back with respect to the outer surface of the applicator body (1), and the upper mounting block (701) is located directly above the lower mounting block (6).

4. A fully enclosed negative pressure drug delivery device according to claim 1, characterized in that: An adapting groove matching the fastening screw (601) is provided on the outer surface of the upper mounting block (701), and the bottom of the fastening block (602) is arranged in a frictional shape and is in frictional contact with the top surface of the upper mounting block (701).

5. The fully enclosed negative pressure drug delivery device according to claim 1, characterized in that: The telescopic end of the synchronous electric push rod (801) passes through the top surface of the top cover (7) and is fixed to the top surface of the sealing pressure plate (802).

6. The fully enclosed negative pressure drug delivery device according to claim 1, characterized in that: The bottom surface of the sealing pressure plate (802) contacts the bottom end surface of the annular block (803).

7. The fully enclosed negative pressure drug delivery device according to claim 1, characterized in that: The cross-section of the groove (805) is an annular structure, and the inner wall of the groove (805) is in sealing contact with the outer surface of the sealing ring (804).

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