CN218529453U

CN218529453U - Infusion pump

Info

Publication number: CN218529453U
Application number: CN202220791966.1U
Authority: CN
Inventors: 周贵; 宋哲
Original assignee: Weitai Medical Device Hangzhou Co ltd
Current assignee: Weitai Medical Device Hangzhou Co ltd
Priority date: 2022-04-07
Filing date: 2022-04-07
Publication date: 2023-02-28
Anticipated expiration: 2032-04-07

Abstract

The utility model discloses an infusion pump, which comprises a liquid storage device and an infusion pump body, wherein the liquid storage device and the infusion pump body can be prevented from water in IPX8 grade after being assembled, and a sealing ring is arranged between the liquid storage device and the infusion pump body; sealing rings are arranged between the upper infusion pump shell and the lower infusion pump shell and can prevent water after being fixed and assembled by screws; a sleeve is arranged at the center of the lower top surface of the infusion pump body, and a sealing ring is arranged between the sleeve and the infusion pump shell; a piston is arranged in the liquid storage device, and a sealing ring is arranged between the piston and the inner wall of the liquid storage device, so that liquid can be prevented from overflowing. The utility model discloses infusion pump waterproof performance is excellent, makes things convenient for the patient to wear the use.

Description

Infusion pump

Technical Field

The utility model relates to the technical field of medical equipment, in particular to infusion pump.

Background

An infusion pump is a medical device which can give a prescribed amount of medicine at a prescribed time, and the infusion pump can supplement the medicine and meet the treatment requirements of patients.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides an infusion pump, waterproof performance is good, makes things convenient for the patient to use.

The utility model adopts the following technical scheme: the utility model provides an infusion pump, includes the reservoir and the infusion pump body, the reservoir is the L type with the infusion pump body is whole, and the infusion pump body is equipped with the sleeve, and the reservoir is equipped with the opening, sealing connection between the inner wall of the infusion pump body and opening inboard.

Optionally, a first sealing element is arranged outside the sleeve, and the first sealing element is a sealing ring; the infusion pump body is connected with the inner wall of the inner side of the opening in a sealing mode through the first sealing piece.

Optionally, the infusion pump body comprises an infusion pump lower housing assembly and an infusion pump upper housing assembly, wherein: and a second sealing element is arranged between the upper infusion pump shell assembly and the lower infusion pump shell assembly.

Optionally, the second sealing element is a sealing ring arranged on the interface of the lower infusion pump housing and the upper infusion pump housing.

Optionally, the seal ring is injection molded integrally with the lower housing of the infusion pump.

Optionally, the infusion pump upper housing and the infusion pump lower housing are connected through screws.

Optionally, the infusion pump upper housing is provided with a sleeve mounting aperture, and a third seal is provided between the sleeve and the infusion pump upper housing.

Optionally, a groove is formed in a portion of the sleeve connected with the sleeve mounting hole, and the third sealing element is a sealing ring located in the groove.

Optionally, the sleeve is connected with the upper casing of the infusion pump through a screw.

Optionally, a piston is arranged inside the opening of the reservoir, and the piston is connected with the inner wall of the opening through a fourth sealing element.

Optionally, the fourth seal is an O-ring disposed outside the piston.

Optionally, a plurality of air holes are formed in the lower infusion pump shell, and a waterproof air-permeable membrane is arranged on the inner side of the lower infusion pump shell; the waterproof breathable film is covered on the breathable holes.

According to the technical scheme of the utility model, the infusion pump body of the infusion pump is provided with a sleeve, the liquid reservoir is provided with an opening, and the infusion pump body is hermetically connected with the inner wall of the opening; the utility model discloses a reservoir and the sealing at the muffjoint position of the infusion pump body, waterproof performance is good.

Drawings

For purposes of illustration and not limitation, the present invention will now be described in accordance with its preferred embodiments, particularly with reference to the accompanying drawings, in which:

FIG. 1 is a schematic diagram of an infusion pump according to an embodiment of the present invention before being clamped and connected;

FIG. 2 is a schematic structural diagram of an infusion pump clamping rail connection process according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of an infusion pump with a clamped rail connection according to an embodiment of the present invention;

fig. 4 is a partial cross-sectional view of an infusion pump of an embodiment of the present invention;

fig. 5 is an exploded view of an infusion pump body in an embodiment of the invention;

FIG. 6 is a cross-sectional view of the upper and lower housing connections of the infusion pump body in an embodiment of the present invention;

fig. 7 is a schematic structural view of a sleeve according to an embodiment of the present invention;

FIG. 8 is a schematic view of a sleeve installation in an embodiment of the present invention;

FIG. 9 is a schematic view of a sleeve connection in an embodiment of the present invention;

fig. 10 is an exploded view of a reservoir in an embodiment of the invention;

fig. 11 is a schematic structural view of a reservoir in an embodiment of the present invention;

fig. 12 is a schematic structural view of a piston seal according to an embodiment of the present invention;

FIG. 13 is a schematic structural view of a lower housing assembly of an infusion pump in an embodiment of the present invention;

fig. 14 is a back view of a lower housing assembly of an infusion pump in an embodiment of the present invention.

In the figure: 1-reservoir, 2-infusion pump body, 3-infusion pump upper shell assembly, 31-infusion pump upper shell, 4-infusion pump lower shell assembly, 41-infusion pump lower shell, 411-butt surface, 412-air vent, 5-first sealing element, 6-sleeve, 61-groove, 7-second sealing element, 71-arc part, 8-third sealing element, 9-fourth sealing element, 10-piston, 11-inner wall, 12-waterproof air permeable membrane, 13-screw, 14-infusion pump body lower top surface, 15-reservoir bottom surface, 16-sleeve mounting hole opening, 17-infusion pump body bottom surface.

Detailed Description

The utility model discloses in the embodiment, infusion pump waterproof performance is excellent, has satisfied the operation requirement, and the following is specifically explained.

As shown in fig. 1 to 14, the embodiment of the utility model discloses an infusion pump, including reservoir 1 and the infusion pump body 2, the reservoir 1 is the L type with the infusion pump body 2 is whole, and the low top surface 14 center of the infusion pump body is equipped with sleeve 6, and reservoir bottom surface 15 is equipped with the opening, sealing connection between the inner wall 11 of the low top surface 14 of the infusion pump body and opening inboard. Fig. 10 and 11 show an L-shape of the reservoir 1.

A first sealing element 5 is arranged on the outer side of the sleeve 6, and the first sealing element 5 is a sealing ring; the sealing connection between the lower top surface 14 of the infusion pump body and the inner wall 11 is achieved by the first seal 5.

After the guide rail of the liquid reservoir and the guide rail of the infusion pump body are mutually occluded, the liquid reservoir 1 is pushed downwards, and after the liquid reservoir reaches the lowest end, the inner wall 11 of the liquid reservoir 1 extrudes the sealing ring, so that the sealing ring deforms, and the assembly is completed, as shown in fig. 3. Fig. 4 shows a cross-sectional view of the assembled gasket.

The infusion pump body 2 comprises an infusion pump upper housing component 3 and an infusion pump lower housing component 4, wherein: a second seal 7 is provided between the upper infusion pump housing assembly 3 and the lower infusion pump housing assembly 4. The lower infusion pump housing 41 has an abutment surface 411 that abuts the upper infusion pump housing 31, and the second seal 7 is a seal ring provided on the abutment surface 411. A circle of sealing rings are injected on the abutting surface 411 in an injection molding mode, the abutting surface 411 comprises a section of arc-shaped portion 71, the arc-shaped portion 71 is matched with the abutting surface 411, the abutting surface 411 is not on a plane, the abutting surface 411 is not a plane, connection is firmer, and the abutting surface 411 is also matched with the inclination angle of the edge of the lower shell. The upper and lower shells are fastened and fixed by screws, the cross section of the sealing ring is as shown in figure 6, and the screws enable the upper and lower shells to be mutually extruded to achieve sealing.

The infusion pump upper housing 31 is provided with a sleeve mounting aperture 16 and a third seal 8 is provided between the sleeve 6 and the infusion pump upper housing 31.

The sleeve 6 is provided with a groove 61 at the connecting part with the sleeve mounting hole 16, and the third sealing element 8 is a sealing ring positioned in the groove 61. The sleeve 6 is connected with the upper shell 31 of the infusion pump through a screw 13.

The sealing ring is sleeved on the sleeve 6 shown in fig. 7, then the sleeve 6 is inserted into the infusion pump semi-finished product and is installed towards the bottom surface 17 of the infusion pump body, the sealing ring is assembled in the groove 61 and is pressed with the infusion pump semi-finished product, and the assembly is completed, so that sealing is realized. The cross-sectional view is shown in fig. 9, in which the cross-sectional state of the seal ring can be seen.

A piston 10 is provided inside the opening of the reservoir 1, and the piston 10 is connected to an inner wall 11 inside the opening by a fourth seal 9. The fourth seal 9 is a seal ring 9 provided outside the piston 10, and an O-ring may be used.

The piston 10 with the sealing ring 9 is arranged in the liquid storage device 1, the piston 10 can be pushed by a screw rod in the liquid storage device 1 to extrude infusion liquid, and the sealing ring 9 is extruded and deformed by the piston 10 and the inner wall 11 of the liquid storage device to complete sealing. The cross-sectional state of the gasket 9 is shown in fig. 12.

A plurality of air holes 412 are arranged on the lower shell 41 of the infusion pump, and a waterproof air-permeable membrane 12 is arranged on the inner side of the lower shell 41 of the infusion pump; the waterproof breathable film 12 covers the breathable holes 412.

The waterproof breathable film 12 is adhered to the lower casing 41 of the infusion pump through a double-sided adhesive tape, three small holes are formed in the lower casing of the infusion pump correspondingly, gas can pass through the three small holes, and liquid water is blocked outside.

According to the embodiment of the utility model, the center of the low top surface of the infusion pump body is provided with a sleeve, the bottom surface of the liquid reservoir is provided with an opening, and the low top surface of the infusion pump body is hermetically connected with the inner wall at the inner side of the opening; a second sealing element is arranged between the upper infusion pump shell assembly and the lower infusion pump shell assembly; a third sealing element is arranged between the sleeve and the upper casing of the infusion pump; the piston is connected with the inner wall of the opening through a fourth sealing element. The utility model discloses embodiment infusion pump waterproof performance is excellent, can both wear when swimming, bathing, satisfies patient's operation requirement.

The above detailed description does not limit the scope of the present invention. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions can occur, depending on design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An infusion pump, which comprises a liquid reservoir (1) and an infusion pump body (2), and is characterized in that,

the infusion pump body (2) is provided with a sleeve (6), the liquid reservoir (1) is provided with an opening, and the sleeve of the infusion pump body is hermetically connected with the inner wall (11) of the inner side of the opening of the liquid reservoir;

the infusion pump body (2) includes infusion pump upper housing subassembly (3) and infusion pump lower housing subassembly (4), wherein:

and a second sealing element (7) is arranged between the upper infusion pump shell component (3) and the lower infusion pump shell component (4).

2. Infusion pump according to claim 1, characterized in that a first sealing element (5) is arranged outside the sleeve (6), the first sealing element (5) being a sealing ring; the sealed connection between the infusion pump body and the inner wall (11) of the liquid reservoir is realized through the first sealing element (5).

3. The infusion pump according to claim 1, wherein the second sealing member (7) is a sealing ring provided at an abutment surface (411) of the lower infusion pump housing (41) and the upper infusion pump housing (31).

4. The infusion pump according to claim 3, wherein the sealing ring is injection molded integrally with the infusion pump lower housing (41).

5. The infusion pump according to claim 3, wherein the infusion pump upper housing (31) and the infusion pump lower housing (41) are fixed by a screw connection.

6. The infusion pump according to any of claims 1 to 5, wherein the infusion pump upper housing (31) is provided with a sleeve mounting aperture (16), and a third seal (8) is provided between the sleeve (6) and the infusion pump upper housing (31).

7. Infusion pump according to claim 6, characterized in that the sleeve (6) is provided with a groove (61) in the connection with the sleeve mounting orifice (16), and that the third sealing element (8) is a sealing ring in the groove (61).

8. Infusion pump according to any of claims 1 to 5, characterized in that the connection between the sleeve (6) and the upper infusion pump housing (31) is by means of screws (13).

9. Infusion pump according to any of claims 1 to 5, characterized in that inside the opening of the reservoir (1) a piston (10) is provided, which piston (10) is connected to the inner wall (11) inside the opening by a fourth seal (9).

10. Infusion pump according to claim 9, characterized in that the fourth seal (9) is an O-ring provided on the outside of the piston (10).

11. The infusion pump according to any one of claims 3 to 5, wherein a plurality of air holes (412) are formed in the lower infusion pump casing (41), and a waterproof air-permeable membrane (12) is arranged on the inner side of the lower infusion pump casing (41);

the waterproof breathable film (12) covers the breathable holes (412).