Pasting type medicine infusion device, implantation needle mechanism and control method

Abstract

The invention discloses an implantation needle mechanism, and relates to the technical field of medical instruments, the implantation needle mechanism comprises an annular support arranged on an infusion device, a needle seat is inserted in the annular support, an infusion needle is arranged on the needle seat, a clamping structure is arranged between the needle seat and the annular support, and a reset assembly is arranged in the annular support. The invention further discloses an application type medicine infusion device which comprises the implantation needle mechanism, a pump body bottom plate and a pump body upper shell arranged on the pump body bottom plate in a buckled mode, a medicine storage bin is arranged between the pump body bottom plate and the pump body upper shell, a mounting groove is formed in the pump body upper shell, and an annular support is fixedly arranged in the mounting groove. And the inside of the medicine storage bin is communicated with the infusion needle through a needle tube. The implantation needle mechanism and the pump body are integrally arranged, so that the overall size of the medicine infusion device is effectively reduced, and the overall carrying convenience of the device is improved. The invention further discloses a control method of the application type medicine infusion device. The control method is applied to implementation of the application type medicine infusion device.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and more specifically, to a patch-type drug infusion device, an implant needle mechanism and a control method. Background Art

[0002] The patch-type drug infusion device is an innovative drug delivery method that achieves the therapeutic effect of the drug by applying the drug directly to the patient's skin and utilizing the skin's absorption capacity. The device is usually used on a patch-type insulin pump, which is usually used to simulate the insulin secretion function of the pancreas.

[0003] Currently available patch-type insulin pumps usually adopt a separate design of the pump body and the implant needle mechanism, which affects the miniaturization and portability of the product.

[0004] In summary, how to improve the portability of the patch-type drug infusion device is an urgent problem to be solved by those skilled in the art. Summary of the invention

[0005] In view of this, an object of the present invention is to provide an implant needle mechanism for a patch-type drug infusion device, which effectively reduces the volume of the product and adopts an integrated setting to improve the portability of the device.

[0006] Another object of the present invention is to provide a patch-type drug infusion device, comprising the above-mentioned implantation needle mechanism for the patch-type drug infusion device.

[0007] Another object of the present invention is to provide a control method for a patch-type drug infusion device, which is applied to the above-mentioned patch-type drug infusion device.

[0008] In order to achieve the above object, the present invention provides the following technical solutions:

[0009] An implant needle mechanism for a patch-type drug infusion device comprises an annular bracket arranged on the infusion device, a needle seat is inserted in the annular bracket, and the needle seat slides along the inner wall of the annular bracket, an infusion needle is arranged on the needle seat, a clamping structure is arranged between the needle seat and the annular bracket, so that the needle seat can complete the injection after being pressed and be clamped and fixed with the annular bracket, and a reset component is arranged in the annular bracket, so that the needle seat can be reset after being disengaged from the clamping connection with the annular bracket.

[0010] Preferably, the clamping structure includes a fixed clamping block fixedly arranged on the inner wall of the annular bracket and an elastic clamping block fixedly arranged on the needle seat and cooperating with the fixed clamping block.

[0011] Preferably, the reset assembly comprises a reset spring disposed in the annular bracket, one end of the reset spring is fixedly disposed in the annular bracket, and the other end of the reset spring abuts against the needle seat.

[0012] Preferably, a sealing ring is sleeved on the needle seat, and the outer surface of the sealing ring abuts against the inner wall of the annular bracket.

[0013] A patch-type drug infusion device, comprising the above-mentioned implant needle mechanism, the infusion device also comprises a pump body bottom plate and a pump body upper shell buckled on the pump body bottom plate, a drug storage bin is arranged between the pump body bottom plate and the pump body upper shell, a mounting groove is opened on the pump body upper shell, and the annular bracket is fixedly arranged in the mounting groove;

[0014] The medicine storage bin is connected to the infusion needle through a needle tube, and a micro-infusion drive mechanism is arranged in the medicine storage bin to inject the medicine liquid in the medicine storage bin into the infusion needle.

[0015] Preferably, a medical patch is fixedly provided around the bottom plate of the pump body so that the bottom plate of the pump body can be placed at a designated position to complete the injection.

[0016] Preferably, an absorption component is fixedly provided on the side of the pump body bottom plate facing away from the pump body upper shell, and the absorption component is located below the infusion needle, and the absorption component is used to absorb the drug solution flowing out of the infusion needle during the emptying or filling process.

[0017] Preferably, the absorption component comprises a medicine storage plastic sheet fixedly arranged on a side of the pump body bottom plate away from the pump body upper shell, and a medicine storage groove is provided on the medicine storage plastic sheet.

[0018] A control method for a patch-type drug infusion device is applied to the above-mentioned patch-type drug infusion device, and the control method comprises:

[0019] The infusion device is placed at a designated injection needle position, and the micro-infusion drive mechanism is controlled to fill the drug solution in the drug storage bin into the infusion needle;

[0020] Press the needle seat to allow the infusion needle to be inserted 4 mm to 5 mm below the skin for infusion;

[0021] The clamping structure is adjusted to release the clamping fixation between the needle seat and the annular bracket, and the reset component drives the needle seat to reset.

[0022] Preferably, after the liquid medicine in the medicine storage bin is filled into the infusion needle, the method further comprises:

[0023] The absorption component is controlled to absorb the liquid medicine overflowing from the infusion needle.

[0024] The implant needle mechanism provided by the present invention comprises an annular bracket arranged on the infusion device, a needle seat is inserted in the annular bracket, and the needle seat slides along the inner wall of the annular bracket, an infusion needle is arranged on the needle seat, a clamping structure is arranged between the needle seat and the annular bracket, so that the needle seat can complete the injection after pressing and be clamped and fixed with the annular bracket, and a reset component is arranged in the annular bracket, so that the needle seat can be reset after being disengaged from the clamping with the annular bracket. The patch-type drug infusion device provided by the present invention comprises the above-mentioned implant needle mechanism, the infusion device also comprises a pump body bottom plate and a pump body upper shell buckled on the pump body bottom plate, a drug storage bin is arranged between the pump body bottom plate and the pump body upper shell, a mounting groove is opened on the pump body upper shell, the annular bracket is fixedly arranged in the mounting groove, the drug storage bin is connected with the infusion needle, and a micro-infusion drive mechanism is arranged in the drug storage bin, so that the liquid in the drug storage bin is injected into the infusion needle.

[0025] The patch-type drug infusion device, implant needle mechanism and control method provided by the present invention realize the integrated setting of the implant needle mechanism and the pump body, effectively reduce the overall volume of the drug infusion device, improve the overall portability of the device, and at the same time, the overall operation of the device is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0027] Figure 1 is a schematic diagram of the overall structure of the drug infusion device in this embodiment;

[0028] Figure 2 is a top view of the drug infusion device in this embodiment;

[0029] Figure 3 for Figure 2 Sectional view at AA in the middle;

[0030] Figure 4 for Figure 2 Sectional view at the middle BB;

[0031] Figure 5 Schematic diagram of the installation position of the drug storage bin in the drug infusion device in this embodiment;

[0032] Figure 6 Schematic diagram of the structure of the absorption component in this embodiment.

[0033] Figure 1-Figure 6 , the reference numerals include:

[0034] 1. Ring bracket; 2. Needle holder; 3. Clamping structure; 31. Fixed clamp block; 32. Elastic clamp block; 4. Reset assembly; 41. Reset spring; 5. Infusion needle; 6. Sealing ring; 7. Pump body bottom plate; 8. Pump body upper shell; 9. Mounting groove; 10. Drug storage compartment; 11. Absorption assembly; 111. Drug storage plastic sheet; 112. Drug storage tank. DETAILED DESCRIPTION

[0035] 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.

[0036] Unless otherwise defined, the technical terms or scientific terms used in the disclosure of this application shall have the usual meanings understood by persons with ordinary skills in the field to which the invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance. Words such as "connected" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly. The embodiments of the present application disclose a patch-type drug infusion device, an implant needle mechanism and a control method.

[0037] The core of the present invention is to provide an implant needle mechanism for a patch-type drug infusion device.

[0038] Another core of the present invention is to provide a patch-type drug infusion device, including the implant needle mechanism for the patch-type drug infusion device.

[0039] Another core of the present invention is to provide a control method for a patch-type drug infusion device, which is applied to the above-mentioned patch-type drug infusion device.

[0040] Please refer to Figures 1 to 4 The implantable needle mechanism for the patch-type drug infusion device provided by the present invention comprises an annular bracket 1 arranged on the infusion device, a needle seat 2 is inserted in the annular bracket 1, and the needle seat 2 slides along the inner wall of the annular bracket 1, an infusion needle 5 is arranged on the needle seat, and a clamping structure 3 is arranged between the needle seat 2 and the annular bracket 1, so that the needle seat 2 can complete the injection after being pressed and be clamped and fixed with the annular bracket 1, and a reset component 4 is arranged in the annular bracket 1, so that the needle seat 2 can be reset after being disengaged from the clamping connection with the annular bracket 1.

[0041] Specifically, the position of the clamping structure 3 is set according to the specific downward movement size of the infusion needle 5, and the needle seat 2 is pressed to drive the infusion needle to move downward. When the infusion needle 5 moves downward to the specified position, the clamping structure 3 is used to achieve relative fixation between the needle seat 2 and the annular bracket 1, thereby ensuring that the infusion needle 5 remains stationary for infusion. After the infusion is completed, the clamping structure 3 is adjusted to release the clamping fixation between the annular bracket 1 and the needle seat 2, and the reset component 4 drives the needle seat 2 to reset.

[0042] It should be noted that the infusion needle 5 is usually made of SUS304 stainless steel capillary tube with an outer diameter of 0.4 mm and an inner diameter of 0.2 mm. At the same time, one end of the infusion needle 5 is bonded to the central axis of the needle seat 2, and the other end of the infusion needle 5 is suspended below the needle seat 2.

[0043] The above-mentioned patch-type drug infusion device uses an implantable needle mechanism, which realizes the infusion operation by pressing the needle seat 2, and realizes the resetting of the needle seat 2 by releasing the clamping structure 3. The overall needle injection operation is simple to operate. At the same time, the setting of the annular bracket 1 facilitates the insertion of the implantable needle mechanism into the mounting groove on the pump body, completing the integrated setting and further improving the portability of the device.

[0044] The implantation needle mechanism for the patch-type drug infusion device provided by the present invention is described in more detail below in conjunction with the accompanying drawings and specific embodiments.

[0045] Based on any of the above embodiments, Figure 3 and Figure 4 The clamping structure 3 includes a fixed clamping block 31 fixedly arranged on the inner wall of the annular bracket 1 and an elastic clamping block 32 fixedly arranged on the needle seat 2 and matched with the fixed clamping block 31 .

[0046] Specifically, there are two fixed card blocks 31 arranged opposite to each other, and two elastic card blocks 32 are arranged opposite to each other in cooperation with the fixed card blocks 31. An inclined first guide surface is arranged above each fixed card block 31, and a second guide surface cooperating with the first guide surface is arranged below each elastic card block 32. During the pressing process of the needle seat 2, the two elastic card blocks 32 are compressed toward the shaft of the annular bracket 1 under the guidance of the first guide surface and the second guide surface until the second guide surface of the elastic card block 32 is separated from the first guide surface of the fixed card block 31, and the elastic card block 32 rebounds to complete the engagement with the fixed card block 31. During the resetting process, the two elastic card blocks 32 are squeezed to separate the elastic card block 32 from the fixed card block 31, and the needle seat 2 is reset under the action of the resetting component 4. The overall operation is simple and convenient.

[0047] Based on any of the above embodiments, Figure 3 and Figure 4The reset assembly 4 includes a reset spring 41 disposed in the annular bracket 1 , one end of the reset spring 41 is fixedly disposed in the annular bracket 1 , and the other end of the reset spring 41 abuts against the needle seat 2 .

[0048] Specifically, during the process of pressing the needle seat 2, the return spring 41 provides a pressing feel for the needle seat 2 and improves the tightness of the fit between the fixed block 31 and the elastic block 32. At the same time, after the clamping fixation between the needle seat 2 and the annular bracket 1 is released, the return spring 41 realizes the push-needle rebound of the infusion needle 5, completing the resetting of the needle seat 2.

[0049] Based on any of the above embodiments, Figure 3 and Figure 4 A sealing ring 6 is sleeved on the needle seat 2 , and the outer surface of the sealing ring 6 abuts against the inner wall of the annular bracket 1 .

[0050] Specifically, the sealing ring 6 effectively improves the sealing performance between the annular support 1 and the needle seat 2, ensuring reliable sealing of the drug solution during the infusion process.

[0051] Please refer to Figures 1 to 6 The patch-type drug infusion device provided by the present invention includes the above-mentioned implant needle mechanism, and the infusion device also includes a pump body bottom plate 7 and a pump body upper shell 8 buckled on the pump body bottom plate 7, a drug storage bin 10 is arranged between the pump body bottom plate 7 and the pump body upper shell 8, a mounting groove 9 is opened on the pump body upper shell 8, and an annular bracket 1 is fixedly arranged in the mounting groove 9, the drug storage bin 10 is connected with the infusion needle 5 through a needle tube, and a micro infusion drive mechanism is arranged in the drug storage bin 10 to inject the drug solution in the drug storage bin 10 into the infusion needle 5.

[0052] Specifically, by placing the implant needle mechanism in the mounting groove 9, the implant needle mechanism and the pump body are integrated, which effectively reduces the volume of the drug infusion device and improves the portability of the device. The micro-infusion drive mechanism can use a micro-stepping motor to squeeze out the drug solution in the drug storage bin 10.

[0053] On the basis of any of the above embodiments, a medical patch (not shown in the figure) is fixedly provided around the pump body bottom plate 7 so that the pump body bottom plate 7 is placed at a designated position to complete the injection.

[0054] Specifically, the pump body bottom plate 7 is conveniently adhered to the designated injection needle position by using a medical patch, so as to fix the pump body bottom plate 7, thereby achieving the purpose of sequential implantation and multiple uses, and further improving the convenience of the device.

[0055] Based on any of the above embodiments, an absorption component 11 is fixedly provided on the side of the pump body bottom plate 7 facing away from the pump body upper shell 8, and the absorption component 11 is located below the infusion needle 5. The absorption component 11 is used to absorb the liquid flowing out of the infusion needle 5 during the emptying or filling process.

[0056] Specifically, during the process of emptying or filling the infusion needle 5 , the absorption component 11 is used to absorb the drug solution flowing out of the infusion needle 5 to prevent the drug from being contaminated and causing safety hazards.

[0057] Furthermore, the absorption component 11 includes a medicine storage plastic sheet 111 fixedly arranged on the side of the pump body bottom plate 7 away from the pump body upper shell 8, and a medicine storage groove 112 is opened on the medicine storage plastic sheet 111.

[0058] Specifically, the drug liquid flowing out of the infusion needle 5 is absorbed by the drug storage plastic sheet 111 through the drug storage groove 112. At the same time, because the drug storage plastic sheet 111 is located below the infusion needle 5, when the infusion needle 5 moves downward due to accidental contact with the needle seat 2, the infusion needle 5 will first penetrate into the drug storage plastic sheet 111, which effectively prevents the infusion needle 5 from stabbing the user and improves the safety performance of the device.

[0059] The control method of the patch-type drug infusion device provided by the present invention is applied to the above-mentioned patch-type drug infusion device, and the control method specifically includes:

[0060] S1, placing the infusion device at the designated injection needle position, and controlling the micro-infusion drive mechanism to fill the drug solution in the drug storage bin 10 into the infusion needle 5;

[0061] S2, press the needle seat 2 to insert the infusion needle 4mm-5mm subcutaneously for infusion;

[0062] S3. After the infusion is completed, the clamping structure 3 is adjusted to release the clamping fixation between the needle seat 2 and the annular bracket 1, and the reset component 4 drives the needle seat 2 to reset.

[0063] The control method of the patch-type drug infusion device effectively realizes the transmission of the drug solution and the rapid injection and resetting of the infusion needle 5, and the overall operation is simple and convenient. At the same time, the integrated setting of the pump body and the implant needle mechanism effectively reduces the overall volume of the device and improves the portability of the device.

[0064] On the basis of any of the above embodiments, after the drug liquid in the drug storage bin 10 is filled into the infusion needle 5, it also includes controlling the absorption component 11 to absorb the drug liquid overflowing from the infusion needle 5, effectively avoiding safety hazards caused by drug contamination.

[0065] The above is a detailed introduction to a patch-type drug infusion device, an implant needle mechanism and a control method provided by the present invention. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, the present invention can also be improved and modified in a number of ways, and these improvements and modifications also fall within the scope of protection of the present invention.

Claims

1. An implant needle mechanism, characterized in that: The invention comprises an annular support (1) arranged on an infusion device, a needle seat (2) being inserted into the annular support (1), and the needle seat (2) sliding along the inner wall of the annular support (1), an infusion needle (5) being arranged on the needle seat, a clamping structure (3) being arranged between the needle seat (2) and the annular support (1), so that the needle seat (2) can be clamped and fixed with the annular support (1) after being pressed, and a reset component (4) being arranged in the annular support (1), so that the needle seat (2) can be reset after being released from the clamping connection with the annular support (1).

2. An implant needle mechanism according to claim 1, characterized in that: The clamping structure (3) comprises a fixed clamping block (31) fixedly arranged on the inner wall of the annular bracket (1) and an elastic clamping block (32) fixedly arranged on the needle seat (2) and cooperating with the fixed clamping block (31).

3. An implant needle mechanism according to claim 1, characterized in that: The reset assembly (4) comprises a reset spring (41) arranged in the annular bracket (1), one end of the reset spring (41) being fixedly arranged in the annular bracket (1), and the other end of the reset spring (41) being in contact with the needle seat (2).

4. An implant needle mechanism according to any one of claims 1 to 3, characterized in that: A sealing ring (6) is sleeved on the needle seat (2), and the outer surface of the sealing ring (6) abuts against the inner wall of the annular bracket (1).

5. A patch-type drug infusion device, characterized in that: The infusion device comprises an implant needle mechanism as claimed in any one of claims 1 to 4, wherein the infusion device further comprises a pump body bottom plate (7) and a pump body upper shell (8) buckled on the pump body bottom plate (7), a drug storage bin (10) is arranged between the pump body bottom plate (7) and the pump body upper shell (8), a mounting groove (9) is provided on the pump body upper shell (8), and the annular bracket (1) is fixedly arranged in the mounting groove (9); The medicine storage bin (10) is connected to the infusion needle (5) via a needle tube, and a micro-infusion drive mechanism is provided in the medicine storage bin (10) so as to inject the medicine liquid in the medicine storage bin (10) into the infusion needle (5).

6. A patch-type drug infusion device according to claim 5, characterized in that: A medical patch is fixedly provided around the pump body bottom plate (7) so that the pump body bottom plate (7) is placed at a designated position to complete the injection.

7. A patch-type drug infusion device according to any one of claims 5 or 6, characterized in that: An absorption component (11) is fixedly provided on a side of the pump body bottom plate (7) facing away from the pump body upper shell (8), and the absorption component (11) is located below the infusion needle (5). The absorption component (11) is used to absorb the liquid medicine flowing out of the infusion needle (5) during the emptying or filling process.

8. The patch-type drug infusion device according to claim 7, characterized in that: The absorption component (11) comprises a medicine storage plastic sheet (111) fixedly arranged on a side of the pump body bottom plate (7) away from the pump body upper shell (8), and a medicine storage groove (112) is provided on the medicine storage plastic sheet (111).

9. A control method for a patch-type drug infusion device, applied to the patch-type drug infusion device as claimed in claim 7, characterized in that: The control method comprises: Placing the infusion device at a designated injection needle position, and controlling the micro-infusion drive mechanism to fill the drug liquid in the drug storage bin (10) into the infusion needle (5); Pressing the needle seat (2) to allow the infusion needle to be inserted 4 mm to 5 mm below the skin for infusion; The clamping structure (3) is adjusted to release the clamping fixation between the needle seat (2) and the annular bracket (1), and the reset component (4) drives the needle seat (2) to reset.

10. An implant needle mechanism according to claim 9, characterized in that: After the drug liquid in the drug storage bin (10) is filled into the infusion needle (5), the method further comprises: The absorption component (11) is controlled to absorb the liquid medicine overflowing from the infusion needle (5).

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