Transfusion device with elastic sheet energy storage function

Abstract

The infusion device with the elastic piece energy storage function comprises an auxiliary cover, a cover plate, a connecting rod, a constant-force elastic piece, an inner piston, a middle guide bearing, an infusion bag and a liquid bag cover plate, a cover groove is formed in the auxiliary cover, the cover plate is arranged in the cover groove, one end of the middle guide bearing is connected with the cover plate, the other end of the middle guide bearing is connected with the liquid bag cover plate, and the constant-force elastic piece is arranged in the cover groove. The connecting rod is connected with the inner piston and the cover plate, the constant-force elastic piece is arranged between the cover plate and the inner piston, the infusion bag is arranged between the inner piston and the liquid bag cover plate, an infusion tube is connected to the infusion bag, a catheter outlet is formed in the liquid bag cover plate, and the infusion tube penetrates through the catheter outlet. Compared with the prior art, the constant-force push injection device can realize constant-force push injection and is convenient for a patient to carry.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to an infusion device with a shrapnel energy storage function. Background Art

[0002] In a normal infusion process, the infusion bag or infusion bottle needs to be placed at a certain height, and gravity is used to provide the infusion pressure, which causes certain inconveniences to the patient's movements during the infusion process.

[0003] A novel fast adjustable constant pressure infusion device with patent number CN202211592157.9 includes: an infusion storage bag and a first connecting tube and a second connecting tube, wherein the first connecting tube is provided with an inflatable bag, a connector, a one-way valve, a first air pressure gauge and a control valve in sequence, and the second connecting tube is provided with a constant pressure valve, a cavity and a flow valve in sequence; the front end of the inflatable bag is provided with an air inlet, and the rear end is provided with an air outlet; the front end of the first connecting tube is provided with a connector, and the connector is provided on the air outlet of the inflatable bag, and the rear end of the first connecting tube is inserted into the bottom of the infusion storage bag; the upper end of the second connecting tube is inserted into the infusion storage bag and the insertion end is located near the bottle mouth; the constant pressure valve is installed in the upper section of the second connecting tube; the cavity is provided on the second connecting tube and is located below the constant pressure valve, and the flow valve is provided on the second connecting tube and is located below the cavity. The structure has the advantages of simple structure and rapid infusion in various occasions. However, its structural setting is still relatively complicated and cannot be portable.

[0004] The prior art also provides some solutions for achieving constant force infusion using springs, but they also have many disadvantages, such as: 1. The performance of the spring mechanism is poor, manifested as severe elastic force attenuation; 2. The spring is made of steel wire, which is easy to rust and is not suitable for medical machinery; 3. The mechanism is complex to manufacture and the manufacturing cost is high.

[0005] In view of this, an infusion device with a shrapnel energy storage function is proposed. Utility Model Content

[0006] The utility model aims to provide an infusion device with a shrapnel energy storage function, which can realize constant force pushing injection and is convenient for patients to carry.

[0007] The above technical objectives of the utility model are achieved through the following technical solutions:

[0008] An infusion device with a shrapnel energy storage function comprises an auxiliary cover, a cover plate, a connecting rod, a constant force shrapnel, an inner piston, a middle guide, an infusion bag and a liquid bag cover plate, the auxiliary cover is provided with a cover groove, the cover plate is arranged in the cover groove, one end of the middle guide is connected to the cover plate, and the other end is connected to the liquid bag cover plate, the connecting rod connects the inner piston and the cover plate, the constant force shrapnel is arranged between the cover plate and the inner piston, the infusion bag is arranged between the inner piston and the liquid bag cover plate, the infusion bag is connected with an infusion tube, the liquid bag cover plate is provided with a catheter outlet, and the infusion tube passes through the catheter outlet.

[0009] In a preferred embodiment, the constant force spring piece includes a first arc-shaped spring piece and a second arc-shaped spring piece, and the arc tops of the first arc-shaped spring piece and the second arc-shaped spring piece are arranged back to back.

[0010] In a preferred embodiment, during the deformation process, the forces of the first arc-shaped elastic piece and the second arc-shaped elastic piece in the direction parallel to the connecting rod remain unchanged.

[0011] In a preferred embodiment, the cover plate and the middle guide are connected by bolts.

[0012] In a preferred embodiment, the liquid bag cover plate and the middle guide bearing are connected by threads or by a detachable buckle.

[0013] In a preferred embodiment, the connecting rod is configured as a screw rod, a screw hole is provided in the cover groove, one end of the connecting rod is connected to the inner piston, and the other end cooperates with the screw hole.

[0014] In a preferred embodiment, a cavity is provided in the auxiliary cover.

[0015] Compared with the prior art, the utility model provides an infusion device with a shrapnel energy storage function, which adopts an arched constant-force shrapnel as an energy storage element. It is manufactured using a characteristic arched shrapnel molding process to provide a constant-force power source for the infusion device, so that the infusion device can achieve constant-force pushing infusion under a constant pressure state.

[0016] Specifically, before use, you first need to open the liquid bag cover, put the infusion bag on the inner piston, and then cover the liquid bag cover. At this time, the infusion bag is full of liquid medicine. Due to structural limitations, the constant force spring is compressed to achieve energy storage. During infusion, the constant force spring gradually recovers to release energy and squeeze the infusion bag, thereby completing the constant force infusion action. The infusion device has a compact structure and a small size, so it can be easily carried by patients, thereby facilitating patient activities during infusion. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1The utility model relates to a structural schematic diagram of an infusion device with a spring-type energy storage function at the start of liquid pressure.

[0018] Figure 2 The utility model relates to a structural schematic diagram of an infusion device with a spring-type energy storage function after the liquid pressure is completed.

[0019] In the figure

[0020] Auxiliary cover 1; cover groove 2; screw hole 3; cavity 4; cover plate 5; connecting rod 6; inner piston 7; middle guide 8; infusion bag 9; infusion tube 10; liquid bag cover plate 11; catheter outlet 12; first arc-shaped spring piece 13; second arc-shaped spring piece 14. DETAILED DESCRIPTION

[0021] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0022] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

[0023] like Figure 1 and Figure 2 As shown, an infusion device with a shrapnel energy storage function comprises an auxiliary cover 1, a cover plate 5, a connecting rod 6, a constant force shrapnel, an inner piston 7, a middle guide 8, an infusion bag 9 and a liquid bag cover plate 11, the auxiliary cover 1 is provided with a cover groove 2, the cover plate 5 is arranged in the cover groove 2, one end of the middle guide 8 is connected to the cover plate 5, and the other end is connected to the liquid bag cover plate 11, the connecting rod 6 connects the inner piston 7 and the cover plate 5, the constant force shrapnel is arranged between the cover plate 5 and the inner piston 7, the infusion bag 9 is arranged between the inner piston 7 and the liquid bag cover plate 11, an infusion tube 10 is connected to the infusion bag 9, a catheter outlet 12 is provided on the liquid bag cover plate 11, and the infusion tube 10 passes through the catheter outlet 12.

[0024] The present embodiment provides an infusion device with a shrapnel energy storage function, which uses an arched constant-force shrapnel as an energy storage element. The shrapnel is manufactured using a characteristic arched shrapnel molding process to provide a constant-force power source for the infusion device, so that the infusion device can achieve constant-force pushing infusion under a constant pressure state.

[0025] Specifically, before use, it is necessary to first open the liquid bag cover 11, put the infusion bag 9 on the inner piston 7, and then cover the liquid bag cover 11. Since the infusion bag 9 is full of liquid medicine at this time, due to structural limitations, the constant force spring is compressed at this time to achieve energy storage. During infusion, the constant force spring gradually recovers to achieve energy release, and squeezes the infusion bag 9, thereby completing the constant force infusion action. The infusion device has a compact structure and a small size, so it can be easily carried by patients, thereby facilitating the movement of patients during infusion.

[0026] Furthermore, in order to achieve a good force application effect, the constant force spring piece includes a first arc-shaped spring piece 13 and a second arc-shaped spring piece 14 , and the arc tops of the first arc-shaped spring piece 13 and the second arc-shaped spring piece 14 are arranged back to back.

[0027] Furthermore, during the deformation process, the force of the first arc-shaped spring piece 13 and the second arc-shaped spring piece 14 in the direction parallel to the connecting rod 6 remains unchanged, thereby achieving constant force infusion. During the manufacturing process, different stresses are applied at different positions of the first arc-shaped spring piece 13 and the second arc-shaped spring piece 14, thereby satisfying the requirement that the force remains unchanged in the direction parallel to the connecting rod 6 during the deformation process.

[0028] In order to facilitate assembly, the cover plate 5 and the middle guide 8 are connected by bolts.

[0029] Furthermore, the liquid bag cover plate 11 and the middle guide bearing 8 are connected via threads or detachable buckles.

[0030] Furthermore, the connecting rod 6 is configured as a screw rod, a screw hole 3 is provided in the cover groove 2, one end of the connecting rod 6 is connected to the inner piston 7, and the other end cooperates with the screw hole 3 to achieve the connection between the inner piston 7 and the auxiliary cover 1.

[0031] In order to facilitate the gripping of the infusion device, the auxiliary cover 1 needs to have a certain size. In order to effectively reduce the weight of the device and reduce production costs, it is also required to reduce the amount of material used. Therefore, a cavity 4 is set in the auxiliary cover 1 to meet the above setting goals.

[0032] The above description of the embodiments is to facilitate the understanding and use of the present invention by ordinary technicians in the technical field. It is obvious that those familiar with the technical field can easily make various modifications to the embodiments and apply the general principles described here to other embodiments without creative work. Therefore, the present invention is not limited to the above embodiments. Improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the present invention should be within the scope of protection of the present invention.

Claims

1. An infusion device with a shrapnel energy storage function, characterized in that: It includes an auxiliary cover, a cover plate, a connecting rod, a constant force spring piece, an inner piston, a middle guide, an infusion bag and a liquid bag cover plate, the auxiliary cover is provided with a cover groove, the cover plate is arranged in the cover groove, one end of the middle guide is connected to the cover plate, and the other end is connected to the liquid bag cover plate, the connecting rod connects the inner piston and the cover plate, the constant force spring piece is arranged between the cover plate and the inner piston, the infusion bag is arranged between the inner piston and the liquid bag cover plate, the infusion bag is connected with an infusion tube, the liquid bag cover plate is provided with a catheter outlet, and the infusion tube passes through the catheter outlet.

2. According to claim 1, an infusion device with a spring energy storage function, characterized in that: The constant force spring piece includes a first arc-shaped spring piece and a second arc-shaped spring piece, and the arc tops of the first arc-shaped spring piece and the second arc-shaped spring piece are arranged back to back.

3. According to claim 2, an infusion device with a shrapnel energy storage function, characterized in that: During the deformation process of the first arc-shaped spring piece and the second arc-shaped spring piece, the force in the direction parallel to the connecting rod remains unchanged.

4. According to claim 1, the infusion device with shrapnel energy storage function is characterized in that: The cover plate and the middle guide bearing are connected by bolts.

5. The infusion device with shrapnel energy storage function according to claim 1, characterized in that: The liquid bag cover plate and the middle guide bearing are connected via threads or detachable buckles.

6. The infusion device with shrapnel energy storage function according to claim 1, characterized in that: The connecting rod is configured as a screw rod, a screw hole is provided in the cover groove, one end of the connecting rod is connected to the inner piston, and the other end is matched with the screw hole.

7. The infusion device with shrapnel energy storage function according to claim 1, characterized in that: A cavity is arranged in the auxiliary cover.

Images