Insulin pump

Abstract

The utility model relates to the technical field of medical equipment, and discloses an insulin pump which comprises a bottom plate, a remaining needle, a medicine box and a main machine assembly, a through hole allowing the remaining needle to penetrate through is formed in the bottom plate, and an injector connected with a piston in the medicine box is arranged in the main machine assembly; a waterproof assembly surrounding the periphery of the through hole is arranged on the bottom plate, and the waterproof assembly comprises an elastic gasket adhered to the bottom plate, a mounting ring fixedly connected to the top of the elastic gasket and absorbent cotton fixedly connected to the mounting ring; a mounting groove for mounting the absorbent cotton is formed in the mounting ring, and the upper surface of the absorbent cotton is higher than the upper surface of the mounting ring; a pasting piece is further pasted on the upper surface of the installation ring. And the puncture part of the remaining needle can be effectively prevented from being stained with water during bathing.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical equipment, and particularly relates to an insulin pump. Background Art

[0002] Insulin pump therapy offers many unique advantages over conventional injections in the treatment of diabetes. It can better control blood sugar than multiple daily injections. Statistics show that insulin pump users have lower HbA1c (glycosylated hemoglobin) levels than those receiving injections. More importantly, blood sugar fluctuations are smaller, tending toward normal levels. Hypoglycemia is less frustrating. Using a basal rate of short-acting insulin instead of long-acting insulin to treat diabetes eliminates the need for scheduled meals, allowing meals to be delayed or canceled without worrying about hypoglycemia, making it more widely accepted by patients.

[0003] By adopting an insulin pump, the human body's insulin secretion pattern can be better imitated, and thus better results can be achieved in controlling blood sugar. Existing insulin pumps are usually directly attached to the human body. For example, the patent with application number CN202420042809.X discloses an artificial extracorporeal pancreas, including a base plate, a retention component, a medicine box and a host component; the retention component is installed on the base plate, and the retention component includes a retention soft needle with an injection channel and a monitoring probe. The medicine box and the host component are assembled with each other and installed as a whole on the base plate, and the medicine outlet of the medicine box is connected to the injection channel. Among them, the host component includes a main control board, and the main control board is electrically connected to the monitoring probe to receive the human physiological parameters transmitted by the monitoring probe. According to the monitoring results of the human physiological parameters, the main control board controls the medicine box to output the medicine liquid. The device needs to be attached to the human body for a long time when in use, and the injection site needs to be changed every 3-5 days. Therefore, it is inevitable that it will get wet during use, especially when bathing. Although the main unit components are usually waterproof, the indwelling needle is installed on the base plate, and the base plate is adhered to the human skin at multiple local locations with medical double-sided tape. Therefore, the site where the indwelling needle is inserted may still be exposed to the air, and there is a risk of getting wet when bathing, which may lead to infection at the puncture site.

[0004] In view of this, the inventors conducted in-depth research on the above-mentioned defects in the prior art, and thus came up with this case. Utility Model Content

[0005] The purpose of the utility model is to provide an insulin pump which can effectively prevent the puncture site of the indwelling needle from getting wet during bathing.

[0006] In order to achieve the above technical objectives, the technical solutions adopted by this utility model are as follows:

[0007] An insulin pump comprises a base plate, an indwelling needle, a medicine box and a main unit assembly, wherein the base plate is formed with a through-hole for the indwelling needle to pass through, and the main unit assembly is provided with a syringe connected to a piston in the medicine box; the base plate is provided with a waterproof assembly surrounding the periphery of the through-hole, and the waterproof assembly comprises an elastic gasket adhered to the base plate, a mounting ring fixedly connected to the top of the elastic gasket, and absorbent cotton fixedly connected to the mounting ring; the mounting ring is formed with a mounting groove for mounting the absorbent cotton, and the upper surface of the absorbent cotton is higher than the upper surface of the mounting ring; the upper surface of the mounting ring is also affixed with an adhesive.

[0008] Furthermore, the base plate is provided with an annular mounting cavity; the elastic gasket is adhered to the mounting cavity; and the upper surface of the mounting ring is higher than the surface of the base plate. This allows the adhesive to adhere tightly to the skin.

[0009] Furthermore, a Hall sensor is installed in the host assembly, and a magnet that is conductive to the Hall sensor is embedded in the interior of the base plate. When the host assembly and the medicine box are connected to the base plate, the Hall sensor can detect whether they are installed in place.

[0010] Furthermore, the syringe includes a power output mechanism that moves the piston in the medicine box toward the injection direction, a drive mechanism for the power output mechanism, and a transmission mechanism connected between the power output mechanism and the drive mechanism. The power output mechanism includes a screw and a push rod. The push rod has a cavity formed therein for the screw to pass through, and a threaded section is formed at the bottom of the cavity to mate with the screw thread. The syringe can be used to advance insulin from the medicine box into the human body.

[0011] Furthermore, the main unit assembly includes a ferrule for mounting and securing the syringe. The ferrule is formed with a sliding cavity for engaging the push rod. Several balls are positioned between the sliding cavity and the push rod. A ball groove for mounting the balls is formed on the inner sidewall of the sliding cavity, while a rolling groove for engaging the balls is formed on the outer sidewall of the push rod. The balls reduce friction between the push rod and the sliding cavity, allowing the push rod to move more smoothly.

[0012] Furthermore, the transmission mechanism includes a first pulley connected to the output end of the drive mechanism, a second pulley connected to the input end of the power output mechanism, and a transmission belt mounted on the first and second pulleys. Utilizing the transmission belt allows for more precise control of the insulin injection volume.

[0013] Furthermore, a pressure sensor is provided at the bottom of the screw rod, which can be used to detect whether the pipeline between the medicine box and the indwelling needle is blocked.

[0014] After adopting the above structure, the insulin pump involved in the utility model is different from the prior art in that a waterproof component is provided on the side of the base plate in contact with the human body. The waterproof component surrounds the periphery of the perforation for the puncture needle to pass through. When the base plate is attached to the human body, the adhesive in the waterproof component can stick the entire mounting ring to the human skin and make the absorbent cotton close to the human body. If water enters the adhesive, it can be absorbed by the absorbent cotton in the first time to prevent water from entering the puncture part and causing infection. In addition, the elastic gasket can make the mounting ring adapt to the activities of the human body to avoid large movements and separating the adhesive from the human body, which can further improve the waterproof effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention can be further described by way of non-limiting examples given in the accompanying drawings;

[0016] Figure 1 It is a structural diagram of the utility model;

[0017] Figure 2 for Figure 1 Structural diagram from another angle;

[0018] Figure 3 This is a schematic diagram of the structure of the waterproof component in the utility model;

[0019] Figure 4 for Figure 3 Schematic diagram of the decomposition;

[0020] Figure 5 This is a schematic structural diagram of the bottom plate of the utility model;

[0021] Figure 6 Schematic diagram of the structure on the inner side of the bottom plate;

[0022] Figure 7 This is a diagram showing the state when the syringe and the ferrule are connected in the present utility model;

[0023] Figure 8 This is a schematic diagram of the structure of the ferrule in the utility model;

[0024] Figure 9 A schematic structural diagram of the push rod in the utility model;

[0025] Figure 10 for Figure 9 Schematic cross-section of .

[0026] The symbols of the main components are explained as follows: base plate 1, perforation 11, installation cavity 12, indwelling needle 2, medicine box 3, main unit assembly 4, waterproof assembly 5, elastic gasket 51, installation ring 52, installation groove 521, absorbent cotton 53, adhesive 54, syringe 6, power output mechanism 61, screw 611, push rod 612, cavity 6121, threaded section 6122, rolling groove 6123, driving mechanism 62, transmission mechanism 63, first pulley 631, second pulley 632, transmission belt 633, magnet 7, ferrule 8, sliding cavity 81, ball groove 811, ball 9. DETAILED DESCRIPTION

[0027] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that similar or identical parts in the drawings or in the specification are numbered the same. Implementations not shown or described in the drawings are forms known to those skilled in the art. In addition, directional terms such as "upper," "lower," "top," "bottom," "left," "right," "front," and "back" mentioned in the embodiments are merely references to the directions in the drawings and are not intended to limit the scope of protection of the present invention.

[0028] like Figures 1 to 10 As shown, an insulin pump involved in the present invention includes a base plate 1, an indwelling needle 2, a medicine box 3 and a main unit assembly 4. A through-hole 11 is formed on the base plate 1 for the indwelling needle 2 to pass through. The medicine box 3 and the main unit assembly 4 can be assembled with each other. A syringe 6 connected to the piston in the medicine box 3 is provided in the main unit assembly 4. After the main unit assembly 4 and the medicine box 3 are assembled, they can be installed on the base plate 1 as a whole. Specifically, the clamping structure is convenient for disassembly and assembly. In addition, a plurality of adhesive portions are provided on the side of the base plate 1 that contacts the human skin. The base plate 1 is fixed with medical double-sided tape. Adhere to the patient's skin; base plate 1 is provided with a waterproof assembly 5 surrounding the periphery of perforation 11. Waterproof assembly 5 includes an elastic gasket 51 adhered to base plate 1, a mounting ring 52 fixedly connected to the top of elastic gasket 51, and absorbent cotton 53 fixedly connected to mounting ring 52. Mounting ring 52 is formed with a mounting groove 521 for mounting absorbent cotton 53, and the upper surface of absorbent cotton 53 is higher than the upper surface of mounting ring 52. Mounting ring 52 also has an adhesive member 54 attached to the upper surface, which can also be made of medical double-sided tape. Waterproof assembly 5 is adhered to base plate 1 by gluing. Each time the injection site is changed and base plate 1 is removed from the skin, a new set of waterproof assembly 5 can be replaced.

[0029] Preferably, the base plate 1 also has an annular mounting cavity 12 formed therein; an elastic washer 51 is adhered to the mounting cavity 12; and the upper surface of the mounting ring 52 is higher than the surface of the base plate. This makes it easier for the adhesive 54 to adhere tightly to the skin. Specifically, the elastic washer 51 can be made of sponge or relatively soft rubber. Using the elastic washer 51 allows the mounting ring 52 to adapt to the patient's movements and prevents the adhesive 54 from falling off the body.

[0030] Preferably, a Hall sensor is installed in the host assembly 4, and a magnet 7 that is conductive with the Hall sensor is embedded in the interior of the base plate 1. When the host assembly 4 and the medicine box 3 are clamped on the base plate 1, the Hall sensor can detect whether they are installed in place.

[0031] Preferably, the syringe 6 includes a power output mechanism 61 that moves the piston in the medicine box 3 toward the injection direction, a drive mechanism 62 that provides power to the power delivery mechanism, and a transmission mechanism 63 connected between the power output mechanism 61 and the drive mechanism 62. The power output mechanism 61 includes a screw 611 and a push rod 612. The push rod 612 has a cavity 6121 formed therein for the screw 611 to pass through, and a threaded section 6122 is formed at the bottom of the cavity 6121 to engage with the screw 611. The drive mechanism 62 utilizes the syringe 6 to stably advance the insulin in the medicine box 3 into the human body and accurately control the dosage.

[0032] Preferably, the main assembly 4 further includes a ferrule 8 for mounting and fixing the syringe 6, which is fixed to the interior of the main assembly 4 by bolts. A sliding cavity 81 is formed on the ferrule 8, which cooperates with the push rod 612. A plurality of balls 9 are provided between the sliding cavity 81 of the ferrule 8 and the push rod 612. The balls 9 are arranged along the moving direction of the push rod 612. A ball 9 groove 811 for mounting the balls 9 is formed on the inner sidewall of the sliding cavity 81, and a rolling groove 6123 for cooperating with the balls 9 is formed on the outer sidewall of the push rod 612. The balls 9 create rolling contact between the push rod 612 and the sliding cavity 81, which can reduce friction between the push rod 612 and the sliding cavity 81, making the push rod 612 move more smoothly.

[0033] Preferably, the transmission mechanism 63 includes a first pulley 631 connected to the output end of the drive mechanism 62, a second pulley 632 connected to the input end of the power output mechanism 61, and a transmission belt 633 sleeved over the first pulley 631 and the second pulley 632. Specifically, the drive mechanism 62 can be a reduction motor, with the first pulley 631 keyed to the output shaft of the reduction motor, and the second pulley 632 keyed to the screw 611; the transmission belt 633 is a synchronous belt, with both the first pulley 631 and the second pulley 632 being synchronous pulleys; the use of the transmission belt 633 for transmission can more accurately control the amount of insulin injected.

[0034] Preferably, the bottom of the screw rod 611 is provided with a pressure sensor. The pressure sensor can be used to detect whether the pipeline between the medicine box 3 and the indwelling needle 2 is blocked. Specifically, when the pipeline is blocked, the front end of the push rod 612 will be blocked to form a downward counter thrust, and the counter thrust will act on the screw rod 611, so that whether the pipeline is blocked can be detected by the pressure sensor.

[0035] The insulin pump provided by the utility model is described in detail. The description of the specific embodiments is only used to help understand the method and the core idea of the utility model. It should be pointed out that for ordinary skilled persons in the art, without departing from the principle of the utility model, the utility model can be improved and modified in many ways, and these improvements and modifications also fall within the protection scope of the utility model claim.

Claims

1. An insulin pump comprising a base plate (1), an indwelling needle (2), a medicine box (3) and a main unit assembly (4), wherein the base plate (1) is formed with a through hole (11) for the indwelling needle (2) to pass through, and the main unit assembly (4) is provided with a syringe (6) connected to a piston in the medicine box (3); characterized in that: The bottom plate (1) is provided with a waterproof component (5) surrounding the periphery of the perforation (11), and the waterproof component (5) comprises an elastic gasket (51) adhered to the bottom plate (1), a mounting ring (52) fixedly connected to the top of the elastic gasket (51), and a water-absorbing cotton (53) fixedly connected to the mounting ring (52); a mounting groove (521) for mounting the water-absorbing cotton (53) is formed on the mounting ring (52), and the upper surface of the water-absorbing cotton (53) is higher than the upper surface of the mounting ring (52); and an adhesive member (54) is also attached to the upper surface of the mounting ring (52).

2. An insulin pump according to claim 1, characterized in that: An annular mounting cavity (12) is also formed on the base plate (1); the elastic washer (51) is adhered in the mounting cavity; and the upper surface of the mounting ring (52) is higher than the surface of the base plate (1).

3. An insulin pump according to claim 2, characterized in that: A Hall sensor is installed in the host assembly, and a magnet (7) that is in electrical communication with the Hall sensor is embedded in the interior of the base plate (1).

4. An insulin pump according to claim 1, characterized in that: The syringe (6) comprises a power output mechanism (61) for moving a piston in a medicine box (3) in a direction of injecting a medicine liquid, a driving mechanism (62) for providing the power output mechanism (61), and a transmission mechanism (63) connected between the power output mechanism (61) and the driving mechanism (62); the power output mechanism (61) comprises a screw (611) and a push rod (612); a cavity (6121) for the screw (611) to pass through is formed in the push rod (612); a threaded section (6122) is formed at the lower portion of the cavity (6121) and is threadedly matched with the screw (611).

5. An insulin pump according to claim 4, characterized in that: The main unit assembly (4) further comprises a sleeve (8) for mounting and fixing the syringe (6), wherein a sliding cavity (81) is formed on the sleeve (8) and cooperates with the push rod (612); a plurality of balls (9) are provided between the sliding cavity (81) and the push rod (612); a ball groove (811) for mounting the balls (9) is formed on the inner side wall of the sliding cavity (81), and a rolling groove (6123) for cooperating with the balls (9) is formed on the outer side wall of the push rod (612).

6. An insulin pump according to claim 5, characterized in that: The transmission mechanism (63) comprises a first pulley (631) connected to the output end of the driving mechanism (62), a second pulley (632) connected to the input end of the power output mechanism (61), and a transmission belt (633) sleeved on the first pulley (631) and the second pulley (632).

7. An insulin pump according to claim 6, characterized in that: A pressure sensor is provided at the bottom of the screw (611).

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