Hand twisting type application infusion device

Abstract

The utility model discloses a hand twisting type application infusion device which comprises a hand twisting driver, a push rod, a medicine storage bin, a piston, an application and an infusion needle, a bin body channel of the medicine storage bin is respectively provided with a medicine inlet and a medicine outlet which are provided with one-way valves, and the push rod is manually driven by the hand twisting driver to rotate and synchronously pushes and pulls the piston to move along the bin body channel. The piston can suck liquid medicine into the bin body channel by moving forwards and backwards along the bin body channel and then inject the liquid medicine into the body of a patient through the infusion needle penetrating through the application, the whole structure is simple, no electronic element exists, the manufacturing cost is low, the problem that the electronic element is still directly scrapped under the normal working condition is solved, and the application range is wide. And the use sanitation and the environmental protection property are both considered, the application infusion work can be completed, and the infusion operation requirement on a user is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of infusion devices, in particular to the technical field of hand-twisted application infusion devices. Background Art

[0002] Insulin injection is one of the effective measures for treating diabetes. Patients can complete the insulin infusion at home through infusion devices such as insulin pens and infusion pumps. Infusion pumps usually use a patch to fix the infusion needle and other components on the surface of the human body, and then use a power source such as a peristaltic pump or a piezoelectric pump to inject the drug solution into the human body through the infusion needle. Because the operation is very simple and convenient (there is no problem that patients have to pinch the skin with one hand for a long time during insulin injection and hold the insulin pen steadily with the other hand at a specified angle), it is becoming more and more popular in the market.

[0003] Existing infusion pumps, such as the single-motor patch-type dual-channel microneedle infusion system disclosed in the invention patent CN116271319A and the motorless piezoelectric infusion pump disclosed in the utility model with the announcement number CN219501712U, once activated, the infusion needle and the liquid pipeline will come into contact with the liquid medicine and the user's body fluids, and thus cannot be reused after disassembly. However, the used power sources such as peristaltic pumps or piezoelectric pumps can still work normally. If they are directly discarded, it is very wasteful and environmentally unfriendly. Therefore, how to reduce the waste caused by directly scrapping power components when they are not damaged while ensuring the convenience and hygiene of operation needs to be solved urgently. Utility Model Content

[0004] The purpose of the utility model is to solve the problems in the prior art and to propose a hand-twist type patch infusion device with a simple overall structure, without any electronic components and low cost. There is no problem of electronic components being directly scrapped when working normally. It not only takes into account hygiene and environmental protection, but also can complete the patch infusion work, effectively reducing the infusion operation requirements for the user.

[0005] To achieve the above-mentioned purpose, the utility model proposes a hand-tightened patch infusion device, including a hand-tightened driver, a push rod, a medicine storage bin, a piston, a patch and an infusion needle. The bin channel of the medicine storage bin is respectively provided with a drug inlet and a drug outlet with a one-way valve. The push rod is manually driven by the hand-tightened driver to rotate and synchronously push and pull the piston to move along the bin channel. The piston can move forward and backward along the bin channel to first suck the drug solution into the bin channel and then inject the drug solution into the patient's body through the infusion needle penetrating the patch.

[0006] Preferably, the hand-tightened driver comprises an upper shell, a lower shell and a transmission mechanism, the upper shell and the lower shell are rotatably connected one above and one below, the lower shell is fixed to the patch through a base, and the upper shell can indirectly drive the push rod to rotate through the transmission mechanism when it is manually driven to rotate.

[0007] Preferably, the transmission mechanism includes a driving gear and a passive gear, the upper shell is coaxially fixed to the driving gear through a shell column, the push rod is in the shape of an arc with teeth, the bin channel is in the shape of an arc matching the push rod, and a plurality of passive gears are meshed in sequence between the driving gear and the push rod.

[0008] Preferably, the transmission mechanism is covered with a gear cover plate.

[0009] Preferably, a plug is provided on the push rod, and a socket which can be plugged with the plug is provided on the piston.

[0010] Preferably, a guide plate is further included, and the guide plate can guide the push rod to slide along a specified route through a slide rail and a slider.

[0011] Preferably, the outer wall of the upper shell is provided with an anti-slip texture.

[0012] Preferably, a convex ring with an outwardly turned edge is provided on the lower shell, and a plurality of fasteners with inwardly turned edges which can be respectively buckled with the outwardly turned edges are arranged around the upper shell.

[0013] Preferably, a socket for inserting a medicine tank is provided on the base, and the lower shell is detachably connected to the base.

[0014] Preferably, a notch is provided on the shell for the medicine can to pass through.

[0015] Beneficial effects of the utility model:

[0016] 1) By manually driving the push rod to rotate forward and reversely and synchronously pushing and pulling the piston to move forward and reversely along the channel of the medicine storage bin, the pressure can be used to first suck the medicine liquid into the channel of the bin and then inject the medicine liquid into the patient's body through the infusion needle that penetrates the dressing. The overall structure is simple, without any electronic components, and the cost is low. There is no problem that the electronic components are directly scrapped when they are working normally. It can not only take into account the hygiene and environmental protection of use, but also complete the dressing infusion work, effectively reducing the infusion operation requirements for the user;

[0017] 2) The hand-tightening driver is formed by combining the upper shell, the lower shell and the transmission mechanism, and the upper shell and the lower shell are connected by a convex ring with an outer flange and a fastener with an inner flange that is buckled on the convex ring, which not only ensures that the upper shell can rotate relative to the lower shell, but also ensures that the connection stability between the upper shell and the lower shell can be maintained;

[0018] 3) By making the lower shell and the base detachably connected, and respectively providing a socket and a notch on the base and the upper shell, it is convenient for the user to directly install the medicine tank containing the specified medicine liquid in the infusion device according to his own needs, thereby improving the adaptability and convenience of the infusion device.

[0019] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is an exploded schematic diagram of a hand-twist type patch infusion device of the utility model from one perspective;

[0021] Figure 2 It is an exploded schematic diagram of another perspective of the hand-twist type patch infusion device of the utility model;

[0022] Figure 3 It is a three-dimensional structural schematic diagram of the upper shell of the hand-tightening type patch infusion device of the utility model;

[0023] Figure 4 It is a schematic diagram of the assembly of the transmission mechanism and the push rod of the hand-tightening type patch infusion device of the utility model at one viewing angle;

[0024] Figure 5 It is a schematic diagram of the assembly of the transmission mechanism and the push rod of the hand-tightening type patch infusion device of the utility model from another viewing angle;

[0025] Figure 6 It is a schematic diagram of the assembly of the transmission mechanism, gear cover plate, push rod and guide plate of the hand-tightening type patch infusion device of the utility model;

[0026] Figure 7 It is a schematic diagram of the assembly of the upper shell, transmission mechanism, push rod and guide plate of the hand-tightening type patch infusion device of the utility model;

[0027] Figure 8 It is a three-dimensional structural schematic diagram of the piston of the hand-twisted type patch infusion device of the utility model;

[0028] Fig. 9 It is a three-dimensional structural schematic diagram of the base of the hand-tightening type patch infusion device of the utility model;

[0029] Fig.10 This is a schematic diagram of the internal structure of the hand-twisted dressing infusion device of the utility model.

[0030] Fig.11 yes Fig.10 AA section view;

[0031] Fig.12 This is a front view of the hand-tightening type patch infusion device of the utility model when the manual medicine loading component is removed and the electric infusion component is installed;

[0032] Fig.13 yes Fig.12 Explosion diagram.

[0033] In the figure: 1-hand-tightening driver, 11-upper shell, 111-shell column, 112-anti-slip texture, 113-fastener, 114-notch, 12-lower shell, 121-convex ring, 13-transmission mechanism, 131-driving gear, 132-passive gear, 14-gear cover, 2-push rod, 21-teeth, 22-plug, 3-drug storage bin, 31-drug inlet, 32-drug outlet, 4-piston, 41-socket, 5-base, 51-socket, 6-applicator, 7-infusion needle, 8-guide plate. DETAILED DESCRIPTION

[0034] See also Figures 1 to 11 The utility model hand-tightening type patch infusion device comprises a hand-tightening driver 1, a push rod 2, a drug storage bin 3, a piston 4, a patch 6 and an infusion needle 7. The bin channel of the drug storage bin 3 is respectively provided with a drug inlet 31 and a drug outlet 32 ​​with a one-way valve. The push rod 2 is manually driven by the hand-tightening driver 1 to rotate and synchronously push and pull the piston 4 to move along the bin channel. The piston 4 can move forward and backward along the bin channel to first suck the drug liquid into the bin channel and then inject the drug liquid into the patient's body through the infusion needle 7 penetrating the patch 6. Among them, the patch 6 can be selected with a low-sensitivity adhesive tape; the drug inlet 31 is used to input the drug liquid into the bin channel, and the drug outlet 32 ​​is used to discharge the drug from the bin channel and exhaust the gas. In addition, since the drug inlet 31 and the drug outlet 32 ​​are respectively provided with one-way valves, on the one hand, when the bin channel needs to increase the drug liquid, the drug outlet 32 ​​is closed, and on the other hand, when the bin channel needs to infuse the drug liquid, the drug inlet 31 is closed.

[0035] The hand-tightening driver 1 includes an upper shell 11, a lower shell 12 and a transmission mechanism 13. The upper shell 11 and the lower shell 12 are rotatably connected one above and one below. The lower shell 12 is fixed to the patch 6 through the base 5. When the upper shell 11 is manually driven to rotate, it can indirectly drive the push rod 2 to rotate through the transmission mechanism 13.

[0036] The transmission mechanism 13 includes a driving gear 131 and a passive gear 132. The upper shell 11 is coaxially fixed with the driving gear 131 through the shell column 111. The push rod 2 is in the shape of an arc strip with teeth 21. The chamber channel is in the shape of an arc matched with the push rod 2. A plurality of passive gears 132 are meshed in sequence between the driving gear 131 and the push rod 2. The transmission mechanism 13 is covered with a gear cover plate 14. Among them, the shell column 111 is used to drive the transmission mechanism 13, and the transmission mechanism 13 is used to transmit the hand-tightening driving force applied by the user on the upper shell 11 to the push rod 2, and the gear cover plate 14 and the lower shell 12 are used together to limit the gear transmission.

[0037] The push rod 2 is provided with a plug 22, and the piston 4 is provided with a socket 41 that can be plugged with the plug 22. When in use, the push rod 2 and the piston 4 can be quickly plugged in through the plug 22 and the socket 41.

[0038] The guide plate 8 is also included, and the guide plate 8 can guide the push rod 2 to slide along a specified route through a slide rail and a slider, that is, the guide plate 8 can fix the motion track and stroke of the push rod 2.

[0039] The outer wall of the upper shell 11 is provided with an anti-slip texture 112 .

[0040] A convex ring 121 with an outwardly turned edge is disposed on the lower shell 12 , and a plurality of fasteners 113 with inwardly turned edges that can be respectively buckled with the outwardly turned edges are disposed around the upper shell 11 .

[0041] The base 5 is provided with a socket 51 for inserting a medicine tank, the lower shell 12 is detachably connected to the base 5, and the upper shell 11 is provided with a notch 114 for the medicine tank to pass through. The medicine tank is used to store liquid medicine, and the medicine tank can rotate relative to the upper shell 11 along the notch 114.

[0042] Working process of this utility model:

[0043] Before use, the lower shell 12 is separated from the base 5, the bottom end of the medicine tank is plugged into the socket 51, the medicine discharge port of the medicine tank is connected to the medicine inlet 31 of the medicine storage bin 3, and then the lower shell 12 is reconnected to the base 5, and the top of the medicine tank is passed through the upper shell 11 along the notch 114. Then, the infusion needle 7 is inserted into the subcutaneous tissue, and the infusion needle 7 and other components are positioned by using the patch 6 attached to the skin surface. When it is necessary to add liquid medicine to the bin channel, the upper shell 11 is directly turned forward and the driving gear 131 is driven to rotate forward through the shell column 111, so that the driving gear 131 indirectly drives the push rod 2 to slide forward along the guide plate 8 through each passive gear 132, thereby gradually pulling the piston 4 out of the bin channel. At this time, the one-way valve located at the medicine inlet 31 is opened, and the one-way valve located at the medicine outlet 32 ​​is closed, and the liquid medicine can gradually flow from the medicine tank into the medicine storage bin 3 under the action of pressure. When it is necessary to discharge the liquid medicine from the chamber channel, the upper shell 11 is directly reversely twisted and the driving gear 131 is driven to rotate in the opposite direction through the shell column 111, so that the driving gear 131 indirectly drives the push rod 2 to slide in the opposite direction along the guide plate 8 through each passive gear 132, thereby gradually pushing the piston 4 into the chamber channel. At this time, the one-way valve at the medicine inlet 31 is closed, and the one-way valve at the medicine outlet 32 ​​is opened, and the liquid medicine can be gradually injected into the patient's body from the medicine storage chamber 3 through the infusion needle 7 under the action of pressure.

[0044] In addition, the rest of the device except the base 5, the patch 6 and the infusion needle 7 can be used as a manual medicine loading component of the medicine tank, so that it only plays the role of manual medicine loading (the method of loading medicine into the medicine tank is the same as above). After completing the manual medicine loading, the manual medicine loading component can be removed, and then the electric infusion component (such as the electric infusion component) can be installed on the base 5, the patch 6 and the infusion needle 7. Fig.12 and Fig.13 As shown) to electrically output the liquid medicine in the medicine tank.

[0045] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention falls within the protection scope of the present invention.

Claims

1. A hand-tightening dressing infusion device, characterized in that: The invention comprises a hand-operated driver (1), a push rod (2), a drug storage chamber (3), a piston (4), a patch (6) and an infusion needle (7); the chamber channel of the drug storage chamber (3) is provided with a drug inlet (31) and a drug outlet (32) each having a one-way valve; the push rod (2) is manually driven by the hand-operated driver (1) to rotate and synchronously push and pull the piston (4) to move along the chamber channel; the piston (4) can firstly absorb drug liquid into the chamber channel by moving forward and reverse directions along the chamber channel and then inject the drug liquid into the patient's body through the infusion needle (7) penetrating the patch (6).

2. The hand-twist type patch infusion device according to claim 1, characterized in that: The hand-operated driver (1) comprises an upper shell (11), a lower shell (12) and a transmission mechanism (13); the upper shell (11) and the lower shell (12) are rotatably connected one above the other; the lower shell (12) is fixed to the patch (6) via a base (5); and when the upper shell (11) is manually driven to rotate, it can indirectly drive the push rod (2) to rotate via the transmission mechanism (13).

3. The hand-twist type patch infusion device according to claim 2, characterized in that: The transmission mechanism (13) comprises a driving gear (131) and a driven gear (132); the upper shell (11) is coaxially fixed with the driving gear (131) via a shell column (111); the push rod (2) is in the shape of an arc strip with teeth (21); the bin channel is in the shape of an arc line matching the push rod (2); and a plurality of driven gears (132) are meshed in sequence between the driving gear (131) and the push rod (2).

4. The hand-twist type patch infusion device according to claim 3, characterized in that: The transmission mechanism (13) is covered with a gear cover plate (14).

5. The hand-twist type patch infusion device according to claim 3, characterized in that: A plug (22) is provided on the push rod (2), and a socket (41) which can be plugged into the plug (22) is provided on the piston (4).

6. The hand-twist type patch infusion device according to claim 3, characterized in that: It also comprises a guide plate (8), which can guide the push rod (2) to slide along a specified route through a slide rail and a slider.

7. The hand-twist type patch infusion device according to claim 2, characterized in that: The outer wall of the upper shell (11) is provided with an anti-slip texture (112).

8. The hand-twist type patch infusion device according to claim 2, characterized in that: A convex ring (121) with an outwardly turned edge is provided on the lower shell (12), and a plurality of buckles (113) with inwardly turned edges which can be respectively buckled with the outwardly turned edges are provided around the upper shell (11).

9. The hand-twist type application infusion device according to any one of claims 2 to 8, characterized in that: The base (5) is provided with a socket (51) for plugging a medicine bottle, and the lower shell (12) is detachably connected to the base (5).

10. The hand-twist type patch infusion device according to claim 9, characterized in that: The upper shell (11) is provided with a notch (114) through which the medicine bottle can pass.

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