Infusion pump device

Abstract

The invention relates to the technical field of medical equipment, and discloses an infusion pump device which comprises a shell, an injection needle module and a medicament delivery module. The shell comprises a bottom shell assembly and a front shell assembly, the injection needle module comprises an injection needle support, a medicament delivery metal catheter, a flexible indwelling hose, a first support, a second support, a detection elastic piece and a reset assembly, the injection needle support can movably penetrate through the front shell assembly in the first direction, and the flexible indwelling hose is arranged at one end of the medicament delivery metal catheter in a sleeving mode. The medicament delivery metal catheter is fixed to the first support, the flexible indwelling hose is fixed to the second support, the detection elastic piece is fixed to the bottom shell assembly, and when the flexible indwelling hose is located at the medicament injection station, the second support is connected with the detection elastic piece in a clamped mode. The reset assembly is used for driving the drug delivery metal guide to move in the opposite direction of the first direction relative to the flexible indwelling hose. The medicament delivery module is used for storing medicament and delivering medicament to the medicament delivery metal conduit. According to the infusion pump device, the product size can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of medical equipment, and in particular to an infusion pump device. Background Art

[0002] At present, some existing infusion pumps are configured on a belt, carried in a pocket of clothes, or attached to the skin in a patch-like manner. When using the above-mentioned infusion pump, the user injects the medicine by vertically injecting the metal injection infusion tube into the user's skin. However, the existing metal injection infusion tube cannot be withdrawn after vertically entering the skin, causing the user to feel a foreign body when using it, which causes pain.

[0003] In order to solve the problem that the metal injection infusion tube cannot be withdrawn from the skin, the existing infusion pump is provided with an indwelling needle, which is buried in the user's skin for injection. Then, in order to enable the indwelling needle to penetrate the user's skin to a sufficient depth, the infusion pump often makes the indwelling needle travel to a sufficient depth, which makes the product larger in size and inconvenient for users to carry. Summary of the invention

[0004] The present application provides an infusion pump device, which can solve the problem of needle withdrawal of a metal catheter while reducing the size of the infusion pump device.

[0005] The present application provides an infusion pump device, comprising a housing, an injection needle module, and a drug delivery module;

[0006] The housing comprises a bottom housing component and a front housing component, wherein the front housing component is covered on the bottom housing component;

[0007] The injection needle module includes an injection needle bracket and a metal catheter for delivering medicine, a flexible indwelling hose, a first bracket, a second bracket, a detection spring and a reset assembly located in the housing, wherein:

[0008] The injection needle support is movably disposed in the front shell component along a first direction relative to the front shell component, and the first direction is the arrangement direction of the front shell component and the bottom shell component;

[0009] The flexible indwelling hose extends along the first direction, and the flexible indwelling hose is sleeved on one end of the drug delivery metal catheter and is interference-fitted with the drug delivery metal catheter;

[0010] The drug delivery metal conduit is fixed to the first bracket, the flexible indwelling hose is fixed to the second bracket, and the detection spring is fixed to the bottom shell assembly. When the injection needle bracket moves along the first direction, the first bracket can be driven along the first direction so that the portion of the drug delivery metal conduit located in the flexible indwelling hose and the flexible indwelling hose can move along the first direction through the bottom shell assembly, and when the flexible indwelling hose is in the drug injection position, the second bracket is engaged with the detection spring;

[0011] The resetting assembly is used to drive the portion of the drug delivery metal conduit located in the flexible indwelling hose to move in the opposite direction relative to the flexible indwelling hose along the first direction when the flexible indwelling hose is in the drug injection station;

[0012] The drug delivery module is used for storing drugs and for delivering drugs to the drug delivery metal catheter.

[0013] The infusion pump device provided by the present application is provided with a first bracket, a second bracket, a detection spring and a reset component inside the shell, and the metal catheter for delivering the medicine is sleeved on the flexible indwelling hose. When the user injects, the injection needle bracket can be used to push the first bracket to move along the first direction, so that the metal catheter for delivering the medicine is inserted into the user's skin with the flexible indwelling hose. When the second bracket is engaged with the detection spring, the injection needle bracket is released, and the reset component can drive the metal catheter for delivering the medicine to detach from the user's skin, and the flexible indwelling hose is buried in the skin, and then the medicine delivery module guides the medicine from the metal catheter for delivering the medicine into the flexible indwelling hose and enters the user's body. The above-mentioned infusion pump device, by setting the reset component, makes the metal catheter for delivering the medicine detach from the skin during the injection of the medicine, and the user will not feel pain. By setting the detection spring, the depth of the metal catheter for delivering the medicine penetrating the skin can be accurately detected, which is conducive to controlling the overall height of the product and avoiding the problem of increasing the size of the product to ensure sufficient depth in the prior art, thereby helping to reduce the size of the product and making it easier for users to carry.

[0014] In some possible implementation schemes, the reset assembly includes a reset spring, one end of the reset spring is connected to the bottom shell assembly, and the other end of the reset spring is connected to the first bracket.

[0015] In some possible implementation schemes, the reset assembly includes a guide shaft, the guide shaft extends along the first direction, and the guide shaft is fixed to the bottom shell assembly, and the reset spring is sleeved on the guide shaft.

[0016] In some possible implementation schemes, the first bracket is made of metal, and the second bracket is made of metal.

[0017] In some possible implementations, it further includes an alarm reminder buzzer disposed in the housing;

[0018] There are two detection springs, which are arranged at intervals, and the material of the detection springs is metal;

[0019] The alarm buzzer is electrically connected to one of the detection springs, so that when the second bracket is engaged with the two detection springs, the alarm buzzer is driven to sound an alarm.

[0020] In some possible embodiments, the drug delivery module includes a drug reservoir and a driving device, wherein the drug reservoir is used to store drugs, and the driving device is used to drive the drugs in the drug reservoir to flow toward the drug delivery metal conduit.

[0021] In some possible embodiments, the drug delivery module also includes a filter assembly, which includes a filter container connected to the drug reservoir and a first filter layer, a second filter layer and a filter sealing silicone plug located in the filter container and arranged in sequence along the flow direction of the drug from the drug reservoir to the metal conduit for delivering the drug, the metal conduit for delivering the drug is penetrated by the filter sealing silicone plug, the first filter layer is used to filter particulate impurities with a diameter φ of 100μm-1mm, and the second filter layer is used to filter particulate impurities with a diameter φ of 0.2μm-100μm.

[0022] In some possible implementations, the drive assembly includes a motor, a transmission assembly, and a piston;

[0023] An opening is provided at one end of the medicine storage container, the piston seal covers the opening, and the medicine is located on a side of the piston away from the opening;

[0024] One end of the transmission assembly is connected to the motor, and the other end is connected to the piston, so that the motor drives the piston to move toward the inside of the medicine storage container through the transmission assembly.

[0025] In some possible implementations, the device further includes a control unit and a signal recognition unit, wherein the signal recognition unit is electrically connected to the control unit, and the control unit is electrically connected to the motor;

[0026] The signal recognition unit is used to recognize the signal of the injected medicine, and the control unit controls the operation of the motor according to the signal recognized by the signal recognition unit.

[0027] In some possible implementations, the front shell assembly includes a front shell and a sealing cover;

[0028] The front shell is provided with a connection port, and the injection needle bracket is detachably inserted through the connection port;

[0029] The sealing cover is connected to the front shell, and is used to cover the connecting port when the injection needle bracket is separated from the connecting port. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the overall structure of the infusion pump device in the embodiment of the present application;

[0031] Figure 2 An exploded view of an infusion pump device in an embodiment of the present application;

[0032] Figure 3 A schematic diagram of a cross-sectional structure of an injection needle module in an embodiment of the present application;

[0033] Figure 4 for Figure 3 A schematic diagram of a cross-sectional structure of a flexible indwelling hose when it is located at a drug injection station;

[0034] Figure 5 for Figure 3 Another schematic diagram of the cross-sectional structure of the flexible indwelling hose when it is located at the injection station;

[0035] Figure 6 for Figure 3 A schematic diagram of the cross-sectional structure when the first bracket returns to the initial position;

[0036] Figure 7 A schematic diagram of the structure inside the infusion pump device in an embodiment of the present application;

[0037] Figure 8 An exploded diagram of a drug delivery module in an embodiment of the present application;

[0038] Fig. 9 This is a partial cross-sectional structural schematic diagram of a drug delivery module in an embodiment of the present application;

[0039] Fig.10 This is another partial cross-sectional structural schematic diagram of the drug delivery module in the embodiment of the present application;

[0040] Fig.11 This is a schematic diagram of a cross-sectional structure of a metal catheter for delivering medicine in an embodiment of the present application;

[0041] Fig.12 This is another overall structural schematic diagram of the infusion pump device in the embodiment of the present application.

[0042] In the figure:

[0043] 100-housing; 110-front housing assembly; 111-front housing; 1111-connecting port; 1112-sealing cover; 112-side plate; 120-bottom housing assembly; 200-injection needle module; 210-injection needle bracket; 220-medicine delivery metal catheter; 230-flexible indwelling hose; 240-first bracket; 250-second bracket; 260-detection shrapnel; 270-reset assembly; 271-reset spring; 272-guide shaft; 300-medicine delivery module; 310-storage medicine container; 311-opening; 320-driving device; 321-motor; 322-screw; 323-push rod movable block; 324-piston; 330-filter assembly; 331-filter container; 332-first filter layer; 333-second filter layer; 3331-filter membrane; 3332-positioning ring; 334-filter sealing silicone plug; 335-annular abutment portion; 400-alarm reminder buzzer; 500-power module; 600-signal recognition unit; 700-control unit. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in 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, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] refer to Figure 1 and Figure 2 The infusion pump device in the embodiment of the present application includes a housing 100 , an injection needle module 200 and a drug delivery module 300 , wherein the injection needle module 200 and the drug delivery module 300 are both disposed in the housing 100 .

[0046] Specifically, the housing 100 includes a front housing component 110 and a bottom housing component 120. The front housing component 110 is covered on the bottom housing component 120 to form a housing 100 structure having an internal accommodation space. Figure 2 As shown, the front shell assembly 110 may include a front shell 111 and a side plate 112 connected to the front shell 111 around the front shell 111. When the front shell assembly 110 is covered on the bottom shell assembly 120, the front shell 111 is opposite to the bottom shell assembly 120, and the side plate 112 is used to connect the front shell 111 and the bottom shell assembly 120. At this time, the distance between the front shell 111 and the bottom shell assembly 120 can be understood as the height of the shell 100, and the arrangement direction between the front shell assembly 110 and the bottom shell assembly 120 is set to the first direction, that is, the first direction is the height direction of the shell 100, and the first direction is perpendicular to the bottom shell assembly 120.

[0047] For reference Figure 2 and Figure 3 The injection needle module 200 includes an injection needle bracket 210, a metal catheter 220 for delivering medicine, a flexible indwelling hose 230, a first bracket 240, a second bracket 250, a detection spring 260, and a reset assembly 270. The front shell 111 is provided with a connection port 1111, which is used to connect the inside and the outside of the housing 100. The injection needle bracket 210 can be movably arranged in the first direction relative to the front shell 111 through the connection port 1111, that is, one end of the injection needle bracket 210 is located inside the housing 100, and the other end is located outside the housing 100.

[0048] The drug delivery metal conduit 220, the flexible indwelling hose 230, the first bracket 240, the second bracket 250, the detection spring 260 and the reset assembly 270 are all located inside the housing 100, wherein the first bracket 240 is fixedly connected to the drug delivery metal conduit 220, and the flexible indwelling hose 230 is fixedly connected to the second bracket 250, so that the first bracket 240 and the second bracket 250 can respectively support the drug delivery metal conduit 220 and the flexible indwelling hose 230. The flexible indwelling hose 230 extends along a first direction, and the flexible indwelling hose 230 can move relative to the housing 100 along the first direction. The flexible indwelling hose 230 is sleeved on one end of the drug delivery metal conduit 220 and has an interference fit with the drug delivery metal conduit 220, that is, the drug delivery metal conduit 220 and the flexible indwelling hose 230 can remain relatively fixed without external interference. It should also be noted that, in the initial state, the end of the drug delivery metal catheter 220 passes through the flexible indwelling hose 230 and is exposed from the flexible indwelling hose 230, so that the drug delivery metal catheter 220 can quickly penetrate into the user's skin.

[0049] When the infusion pump device in this embodiment is in the initial state, continue to refer to Figure 3 The first bracket 240 is located near the front shell 111, and one end of the injection needle bracket 210 located inside the housing 100 can contact the side of the first bracket 240 away from the bottom shell assembly 120. When the injection needle bracket 210 moves along the first direction, the first bracket 240 can be driven to move along the first direction synchronously, and the metal conduit 220 for delivering the medicine and the flexible indwelling hose 230 can be driven to move along the first direction. The bottom shell assembly 120 is provided with a penetration hole. When the flexible indwelling hose 230 and the metal conduit 220 for delivering the medicine move along the first direction, they can pass through the bottom shell assembly 120 through the penetration hole and expose the surface of the bottom shell assembly 120.

[0050] For reference Figure 3 and Figure 4, the detection spring 260 is fixed to the bottom shell assembly 120, and along the first direction, the second bracket 250 is located between the first bracket 240 and the detection spring 260. When the flexible indwelling hose 230 moves along the first direction, the second bracket 250 moves toward the detection spring 260. When the flexible indwelling hose 230 moves to the injection station, the second bracket 250 can be engaged with the detection spring 260. At this time, the flexible indwelling hose 230 can no longer move along the first direction or in the opposite direction of the first direction. It should be noted that the injection station can be understood as the relative position between the flexible indwelling hose 230 and the bottom shell assembly 120 when the flexible indwelling hose 230 and the metal conduit 220 for delivering the medicine pass through the bottom shell assembly 120 sufficiently. At this time, the depth of the flexible indwelling hose 230 and the metal conduit 220 for delivering the medicine outside the shell 100 entering the user's skin is sufficient, thereby ensuring an effective injection effect.

[0051] The reset assembly 270 may include a reset spring 271 and a guide shaft 272, wherein the guide shaft 272 extends along a first direction, one end of the guide shaft 272 is fixed to the bottom housing assembly 120, the reset spring 271 is sleeved on the guide shaft 272, and the reset spring 271 can be extended and retracted along the first direction relative to the guide shaft 272. It can be understood that the reset spring 271 is sleeved on the guide shaft 272, and the guide shaft 272 can guide the extension and retraction of the reset spring 271, so as to ensure that the reset spring 271 is deformed along the first direction. One end of the return spring 271 is connected to the bottom shell assembly 120, and the other end is connected to the first bracket 240. The first bracket 240 is also provided with a through groove extending along the first direction. The injection needle bracket 210 is also provided with an avoidance groove on the side facing the first bracket 240. When the injection needle bracket 210 and the first bracket 240 move along the first direction, the end of the guide shaft 272 away from the bottom shell assembly 120 can pass through the through groove and be located in the avoidance groove to avoid the guide shaft 272 interfering with the movement of the first bracket 240.

[0052] When the user pushes the injection needle support 210 to move toward the inside of the housing 100, the first support 240 moves along the first direction, the return spring 271 is compressed, and an elastic return force is generated to return the first support 240 to its original position. Figure 6When the second bracket 250 is engaged with the detection spring 260, the thrust acting on the injection needle bracket 210 can be canceled. Under the elastic restoring force of the restoring spring 271, the restoring spring 271 drives the first bracket 240 to move in the opposite direction of the first direction, so that the first bracket 240 drives the part of the metal conduit 220 for delivering medicine located in the flexible indwelling hose 230 to move in the opposite direction of the flexible indwelling hose 230 relative to the flexible indwelling hose 230. At this time, it can be ensured that only the flexible indwelling hose 230 is located inside the user's skin, and the metal conduit 220 for delivering medicine is separated from the user's skin. In the subsequent process of injecting medicine, since only the flexible indwelling hose 230 is buried inside the user's skin, it will not cause pain to the user and will not cause skin trauma.

[0053] For reference Figure 2 and Figure 5 The infusion pump device in this embodiment further includes a power module 500 and an alarm buzzer 400 disposed in the housing 100. There are two detection springs 260, which are spaced apart from each other and made of metal. One of the detection springs 260 is connected to the power module 500, and the other detection spring 260 is electrically connected to the alarm buzzer 400. Under normal circumstances, since the two detection springs 260 are not in contact with each other, the power module 500 does not supply power to the alarm buzzer 400, and the alarm buzzer 400 does not sound an alarm. The material of the second bracket 250 is also metal. When the second bracket 250 moves to the two ends thereof and respectively engages with the two detection springs 260, a loop is formed between the two detection springs 260. At this time, the power module 500 can supply power to the alarm reminder buzzer 400, and the alarm reminder buzzer 400 can sound an alarm to remind the user that the metal catheter 220 for delivering medicines and the flexible indwelling hose 230 have penetrated the user's skin to a sufficient depth.

[0054] In addition, the material of the first bracket 240 in this embodiment can also be metal. It is worth noting that the materials of the first bracket 240, the second bracket 250 and the detection spring 260 in this embodiment are all metal, so that the above components can be formed by stamping process. Compared with the existing plastic bracket, the bracket made of metal material can effectively reduce the vertical height (that is, the size along the first direction), which is conducive to reducing the overall thickness of the product.

[0055] For reference Figure 2 , Figure 7 and Figure 8The drug delivery module 300 in this embodiment includes a drug reservoir 310, a driving device 320, and a filtering component 330. The drug reservoir 310 can be used to store drugs. The filtering component 330 is arranged between the drug reservoir 310 and the drug delivery metal conduit 220. The driving device 320 is used to drive the drugs in the drug reservoir 310 to flow to the drug delivery metal conduit 220. Before the drugs flow into the drug delivery metal conduit 220, the drugs can pass through the filtering component 330. The filtering component 330 is used to filter the drugs, so that the impurities in the drugs can be filtered, which can not only prevent the impurities from clogging the drug delivery metal conduit 200, but also prevent the impurities from entering the user's body.

[0056] Specifically, Figure 7 As shown, the driving device 320 may include a motor 321, a transmission assembly and a piston 324. The transmission assembly may include, for example, a lead screw 322 and a push rod movable block 323. The lead screw 322 is connected to the output shaft of the motor 321. The power module 500 may supply power to the motor 321 so that the motor 321 may drive the lead screw 322 to rotate around the axis of the lead screw 322. The push rod movable block 323 is in transmission connection with the lead screw 322. When the lead screw 322 rotates, the push rod movable block 323 may be driven to move relative to the lead screw 322 along the axis direction of the lead screw 322. The push rod movable block 323 is also connected to the piston 324. When the push rod movable block 323 moves along the axis of the lead screw 322, the piston 324 may be driven to move synchronously along the axis of the lead screw 322.

[0057] like Figure 8 As shown, an opening 311 is provided at one end of the medicine reservoir 310 facing the driving device 320, and a sealing cover 1112 of a piston 324 is engaged with the opening 311, so that the interior of the medicine reservoir 310 maintains a sealed environment under the cooperation of the piston 324, and the medicine is stored in the side of the medicine reservoir 310 away from the piston 324. When the push rod movable block 323 drives the piston 324 to move along the axis of the lead screw 322, the piston 324 can be moved toward the interior of the medicine reservoir 310 or away from the interior of the medicine reservoir 310 relative to the opening 311 of the medicine reservoir 310. A medicine outlet is provided on the side of the medicine reservoir 310 opposite to the opening 311. When the piston 324 moves toward the interior of the medicine reservoir 310, the piston 324 applies pressure to the medicine in the medicine reservoir 310, so that the medicine can flow out from the medicine outlet.

[0058] like Figure 8 and Fig. 9As shown, the filter assembly 330 includes a filter container 331 and a first filter layer 332, a second filter layer 333 and a filter sealing silicone plug 334 located in the filter container 331, wherein the first filter layer 332, the second filter layer 333 and the filter sealing silicone plug 334 are sequentially arranged along the flow direction of the medicine from the medicine storage container 310 to the metal conduit 220 for delivering medicine, and the end of the metal conduit 220 for delivering medicine away from the flexible indwelling hose 230 is penetrated by the filter sealing silicone plug 334, so that the end of the metal conduit 220 for delivering medicine is located in the filter container 331. That is to say, when the medicine flows out from the medicine outlet of the medicine storage container 310, it passes through the first filter layer 332, the second filter layer 333 and the filter sealing silicone plug 334 in sequence, and then enters the metal conduit 220 for delivering medicine. Furthermore, after the first bracket 240 returns to its initial position, the end of the drug delivery metal catheter 220 is still located in the flexible indwelling hose 230, and the drug delivery metal catheter 220 and the flexible indwelling hose 230 remain relatively fixed, so that the drug can completely enter the flexible indwelling hose 230 from the drug delivery metal catheter 220, and finally be injected into the user's skin.

[0059] In this embodiment, the first filter layer 332 can be used to perform primary filtration on the medicine to remove particle impurities with a diameter φ of 100 μm-1 mm. The second filter layer 333 can perform secondary filtration on the medicine to remove particle impurities larger than a diameter φ of 0.2 μm-100 μm. Under the blocking effect of the filter sealing silicone plug 334, the medicine cannot flow out of the filter container 331 through other paths and can only flow out through the metal conduit 220 for delivering the medicine.

[0060] Based on this, the material of the first filter layer 332 in this embodiment can be sponge or polyethylene, and the second filter layer 333 can include a filter membrane 3331, or the material of the second filter layer 333 can also be polyethylene. When the first filter layer 332 or the second filter layer 333 is made of polyethylene, a PE sintering process can be used to make a structure for filtering.

[0061] like Fig. 9 As shown, when the second filter layer 333 includes a filter membrane 3331, it also includes a positioning ring 3332, which is located on the side of the filter membrane 3331 away from the first filter layer 332, and the two sides of the positioning ring 3332 are respectively in contact with the filter sealing silicone plug 334 and the filter membrane 3331, so that the filter membrane 3331 fits with the first filter layer 332, thereby improving the filtering effect. The positioning ring 3332 and the filter membrane 3331 can be an integrated structure to simplify the structure and facilitate assembly.

[0062] Since the middle of the positioning ring 3332 is a hollow structure, after the medicine delivery metal conduit 220 is inserted into the filter sealing silicone plug 334, the end of the medicine delivery metal conduit 220 can extend into the hollow structure of the positioning ring 3332. After the medicine passes through the filter membrane 3331, the hollow structure of the positioning ring 3332 can temporarily store the medicine and allow the medicine to flow into the medicine delivery metal conduit 220 as much as possible, thereby avoiding medicine waste.

[0063] This embodiment adopts a secondary filtration method to prevent large particles from clogging the filter membrane 333, thereby preventing the water permeability of the filter membrane 333 from decreasing and preventing the amount of medicine passing through the filter membrane 333 from decreasing and affecting the injection effect. In addition, the secondary filtration method can also reduce the use area of ​​the filter membrane 333 and improve the filtration effect.

[0064] In some embodiments, reference Fig.10 When the second filter layer 333 is made of polyethylene, a ring-shaped abutting portion 335 is provided on the side of the filter sealing silicone plug 334 facing the second filter layer 333, and the side of the ring-shaped abutting portion 335 facing the second filter layer 333 abuts against the second filter layer 333, thereby ensuring that the filter sealing silicone plug 334 and the second filter layer 333 are relatively fixed. Similarly, the middle part of the ring-shaped abutting portion 335 has a hollow structure, and when the drug delivery metal conduit 220 is inserted into the filter sealing silicone plug 334, the end of the drug delivery metal conduit 220 can extend into the hollow structure of the ring-shaped abutting portion 335, so as to facilitate the introduction of drugs into the drug delivery metal conduit 220.

[0065] The annular abutting portion 335 and the filter sealing silicone plug 334 may also be an integrated structure to simplify the structure and facilitate assembly.

[0066] As an optional embodiment, the filter container 331 and the medicine storage container 310 can be an integrated structure, which can avoid the introduction of secondary impurities and thus ensure the quality of the medicine.

[0067] In some embodiments, reference Fig.11 The cross-sectional shape of one end of the metal conduit 220 for delivering medicines that passes through the filtering sealing silicone plug 334 is a plum blossom shape. When the cross-sectional area is the same, compared with the circular cross-section, the diameter of the inner ring of the plum blossom-shaped cross-section is smaller than the diameter of the circular cross-section. When the medicine contains smaller particulate impurities, the medicine can be further filtered by the metal conduit 220 for delivering medicines with a plum blossom-shaped cross-section when entering the metal conduit 220 for delivering medicines.

[0068] Reference again Figure 7The medicine storage 310, the filter assembly 330, the drive device 320, the power module 500 and the injection needle module 200 except the injection needle bracket 210 are all arranged on the bottom shell assembly 120, and each part of the structural components is laid on the bottom shell assembly 120 independently of each other, and there is no overlapping placement between any two structural components. On the one hand, the above-mentioned structural components are compact in structure, and on the other hand, it is conducive to reducing the vertical height of the infusion pump device, thereby reducing the volume of the product.

[0069] Reference again Figure 2 The infusion pump device in this embodiment also includes a signal recognition unit 600 and a control unit 700 disposed in the housing 100. The signal recognition unit 600 may be, for example, an antenna assembly for communication reception and transmission, and the control unit 700 may be, for example, a circuit board. As mentioned above, the alarm reminder buzzer 400 may remind the user that the flexible indwelling hose 230 has penetrated the skin in place. At this time, the user may, for example, operate on a mobile phone and generate a signal for injecting the drug. After receiving the signal, the signal recognition unit 600 sends the signal to the control unit 700. The control unit 700 may control the motor 321 to operate according to the received signal, thereby driving the piston 324 to move, so that the drug in the drug storage 310 flows to the metal conduit 220 for delivering the drug. The power module 500 in this embodiment may also be used to power the control unit 700 and the signal recognition unit 600 to ensure the normal operation of each electronic component.

[0070] For reference Figure 2 and Fig.12 The injection needle module 200 is detachably connected to the front shell 111. When the flexible indwelling hose 230 needs to be inserted into the user's skin, the injection needle holder 210 can be installed on the front shell 111. The front shell 111 is also connected to a sealing cover 1112, which can rotate or move relative to the front shell 111 so that the sealing cover 1112 can cover the connection port 1111 or expose the connection port 1111. In other words, when the infusion pump device in this embodiment is not in use, the sealing cover 1112 covers the connection port 1111 to ensure that the interior of the housing 100 is isolated from the outside and prevent foreign matter from entering the interior of the housing 100. When it is necessary to inject medicine, the sealing cover 1112 can be opened first, the injection needle holder 210 can be installed on the connection port 1111, and the flexible indwelling hose 230 can be inserted. When the flexible indwelling hose 230 is inserted into the skin and in place, the injection needle bracket 210 is removed, and the connecting port 1111 is covered with the sealing cover 1112 to ensure that the interior of the housing 100 is isolated from the outside.

[0071] It should be understood that, for the infusion pump device in this embodiment, the injection needle bracket 210 can be regarded as a common component, that is, the injection needle bracket 210 can be produced and sold separately. In addition, the injection needle bracket 210 is detachable, which can further reduce the volume of the infusion pump device when not in use, so as to facilitate the user to carry it.

[0072] Based on the introduction of the infusion pump device in this embodiment, the infusion pump device can be specifically used as follows: First, open the sealing cover 1112 and install the injection needle bracket 210 on the connection port 1111. Then, the outer surface of the bottom shell assembly 120 is attached to the user's skin surface, and the injection needle bracket 210 is pressed so that the drug delivery metal conduit 220 penetrates the user's skin, so as to facilitate the flexible indwelling hose 230 to enter the user's skin. When the drug delivery metal conduit 220 penetrates into place, the second bracket 250 is engaged with the detection spring 260, and the alarm reminder buzzer 400 sounds an alarm. Then, the user releases the injection needle bracket 210, and the return spring 271 drives the drug delivery metal conduit 220 to separate from the flexible indwelling hose 230, so that the drug delivery metal conduit 220 leaves the user's skin and returns to the housing 100, and the flexible indwelling hose 230 is buried in the user's skin. Next, the user removes the injection needle bracket 210 and covers the sealing cover 1112 on the connection port 1111 to prevent particles from entering the housing 100. Next, the user uses the signal recognition module to send a signal for drug injection, and the control unit 700 drives the motor 321 to operate according to the signal, so that the piston 324 pushes the drug in the drug storage 310 to flow into the drug delivery metal conduit 220, and the drug is introduced into the flexible indwelling hose 230 from the drug delivery metal conduit 220, thereby entering the user's body.

[0073] In the infusion pump device of the embodiment of the present application, during the process of injecting the medicine, the bottom shell assembly 120 always fits the user's skin, thereby achieving vertical injection. In addition, the metal conduit 220 for delivering the medicine withdraws from the user's skin during the process of injecting the medicine, and the user does not feel a foreign body or pain. In addition, by using the detection shrapnel 260 to detect the depth of the metal conduit 220 for delivering the medicine into the skin, it is possible to ensure that the penetration depth of the skin is sufficient without excessively increasing the size of the product in the vertical injection direction, thereby helping to reduce the volume of the product and making it easier for users to carry.

[0074] Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. An infusion pump device, characterized in that: It includes a housing, an injection needle module and a drug delivery module; The housing comprises a bottom housing component and a front housing component, wherein the front housing component is covered on the bottom housing component; The injection needle module includes an injection needle bracket and a metal catheter for delivering medicine, a flexible indwelling hose, a first bracket, a second bracket, a detection spring and a reset assembly located in the housing, wherein: The injection needle support is movably disposed in the front shell component along a first direction relative to the front shell component, and the first direction is the arrangement direction of the front shell component and the bottom shell component; The flexible indwelling hose extends along the first direction, and the flexible indwelling hose is sleeved on one end of the drug delivery metal catheter and is interference-fitted with the drug delivery metal catheter; The drug delivery metal conduit is fixed to the first bracket, the flexible indwelling hose is fixed to the second bracket, and the detection spring is fixed to the bottom shell assembly. When the injection needle bracket moves along the first direction, the first bracket can be driven along the first direction so that the portion of the drug delivery metal conduit located in the flexible indwelling hose and the flexible indwelling hose can move along the first direction through the bottom shell assembly, and when the flexible indwelling hose is in the drug injection position, the second bracket is engaged with the detection spring; The resetting assembly is used to drive the portion of the drug delivery metal conduit located in the flexible indwelling hose to move in the opposite direction relative to the flexible indwelling hose along the first direction when the flexible indwelling hose is in the drug injection station; The drug delivery module is used for storing drugs and for delivering drugs to the drug delivery metal catheter.

2. The infusion pump device according to claim 1, characterized in that: The reset assembly comprises a reset spring, one end of which is connected to the bottom shell assembly, and the other end of which is connected to the first bracket.

3. The infusion pump device according to claim 2, characterized in that: The reset assembly includes a guide shaft, the guide shaft extends along the first direction, and the guide shaft is fixed to the bottom shell assembly, and the reset spring is sleeved on the guide shaft.

4. The infusion pump device according to claim 1, characterized in that: The first bracket is made of metal, and the second bracket is made of metal.

5. The infusion pump device according to claim 4, characterized in that: Also includes an alarm reminder buzzer arranged in the housing; There are two detection springs, which are arranged at intervals, and the material of the detection springs is metal; The alarm buzzer is electrically connected to one of the detection springs, so that when the second bracket is engaged with the two detection springs, the alarm buzzer is driven to sound an alarm.

6. The infusion pump device according to claim 1, characterized in that: The drug delivery module comprises a drug reservoir and a driving device, wherein the drug reservoir is used to store drugs, and the driving device is used to drive the drugs in the drug reservoir to flow toward the drug delivery metal conduit.

7. The infusion pump device according to claim 6, characterized in that: The drug delivery module also includes a filter component, which includes a filter container connected to the drug storage device and a first filter layer, a second filter layer and a filter sealing silicone plug located in the filter container and arranged in sequence along the flow direction of the drug from the drug storage device to the metal conduit for delivering the drug. The metal conduit for delivering the drug is penetrated by the filter sealing silicone plug. The first filter layer is used to filter particulate impurities with a diameter φ of 100μm-1mm, and the second filter layer is used to filter particulate impurities with a diameter φ of 0.2μm-100μm.

8. The infusion pump device according to claim 6, characterized in that: The driving assembly includes a motor, a transmission assembly and a piston; An opening is provided at one end of the medicine storage container, the piston seal covers the opening, and the medicine is located on a side of the piston away from the opening; One end of the transmission assembly is connected to the motor, and the other end is connected to the piston, so that the motor drives the piston to move toward the inside of the medicine storage container through the transmission assembly.

9. The infusion pump device according to claim 8, characterized in that: It also includes a control unit and a signal recognition unit, wherein the signal recognition unit is electrically connected to the control unit, and the control unit is electrically connected to the motor; The signal recognition unit is used to recognize the signal of the injected medicine, and the control unit controls the operation of the motor according to the signal recognized by the signal recognition unit.

10. The infusion pump device according to claim 1, characterized in that: The front shell assembly comprises a front shell and a sealing cover; The front shell is provided with a connection port, and the injection needle bracket is detachably inserted through the connection port; The sealing cover is connected to the front shell, and is used to cover the connecting port when the injection needle bracket is separated from the connecting port.

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