CN217090727U

CN217090727U - Buffer mechanism of implanter

Info

Publication number: CN217090727U
Application number: CN202123209328.9U
Authority: CN
Inventors: 刘海庆; 钱成
Original assignee: Diascience Medical Co Ltd
Current assignee: Diascience Medical Co Ltd
Priority date: 2021-12-20
Filing date: 2021-12-20
Publication date: 2022-08-02
Anticipated expiration: 2031-12-20

Abstract

The utility model provides a buffer gear of implanter, implanter include implanter shell and the internal member of configuration in the implanter shell, internal member includes drive assembly and needle subassembly, the needle subassembly includes needle subassembly shell and the needle file of configuration in the needle subassembly shell, the distal end of needle file is attached with the pjncture needle, the needle subassembly is in response to drive assembly's action and is moved to leading the part of sensor electrode into the host subcutaneous along the direction towards the distal end, the needle file is after the part of sensor electrode is led into the host subcutaneous along the direction towards the near-end and is moved to the pjncture needle and withdraw from the host skin, just the needle file reduces gradually along the in-process speed that the direction towards the near-end removed. The utility model discloses can cushion it in order to reduce speed before the pjncture needle withdraws from the host skin completely to reduce the sound when the back needle is accomplished, promoted user experience, also reduced the vibration of implanting into the ware shell, alleviate the host discomfort.

Description

Buffer mechanism of implanter

Technical Field

The utility model relates to the technical field of medical equipment, concretely relates to buffer gear who lasts blood glucose monitoring system's implantation device.

Background

Some physiological diseases, which have long disease course and prolonged disease duration, need to monitor some physiological parameters of the host in real time to better track the treatment. Such as diabetes, require real-time monitoring of the host blood glucose. Accurate blood sugar self-monitoring is a key for realizing good blood sugar control, is beneficial to evaluating the degree of glucose metabolism disorder of a diabetic patient, formulating a blood sugar reduction scheme, and simultaneously reflecting the blood sugar reduction treatment effect and guiding the adjustment of the treatment scheme.

Currently, most commercially available instruments refer to blood glucose meters, and patients need to collect finger peripheral blood by themselves to measure the blood glucose level at that moment. However, this method has the following drawbacks: firstly, the change of the blood sugar level between two measurements cannot be known, and the peak value and the valley value of the blood sugar can be missed by a patient, so that complications are caused, and irreversible damage is caused to the patient; secondly, the finger tip puncture blood sampling is carried out for a plurality of times every day, which causes great pain for the diabetic. In order to overcome the above-mentioned drawbacks, it is necessary to provide a method for continuously monitoring blood sugar of a patient, so that the patient can conveniently know the blood sugar status of the patient in real time, and take measures in time to effectively control the state of an illness and prevent complications, thereby achieving a high quality of life.

Aiming at the requirements, technical personnel develop a monitoring technology which can be implanted into subcutaneous tissues to continuously monitor subcutaneous blood sugar, the technology is characterized in that a sensor electrode is inserted into the subcutaneous tissues, the sensor electrode generates oxidation reaction between interstitial fluid of a patient and glucose in a body, an electric signal is formed during the reaction, the electric signal is converted into blood sugar reading through a transmitter, the blood sugar reading is transmitted to a wireless receiver every 1-5 minutes, corresponding blood sugar data are displayed on the wireless receiver, and a map is formed for the patient and a doctor to refer.

The sensor electrode needs to be inserted into subcutaneous tissues by using an implanter, and the existing implanter structure is usually realized by shortening implantation time in order to relieve the pain of a host in the wearing process, for example, the implantation of the sensor electrode is realized by using a driving spring, and the needle is automatically switched to a needle returning spring to drive a puncture needle to return when the implantation is completed so as to keep the sensor electrode in the skin of the host, wherein the driving spring and the needle returning spring do not interfere with each other in the process. However, because quick needle return results in the present implanter's needle assembly to hit the implanter internals with strength after accomplishing the needle return, can send great sound on the one hand, influences user experience, and on the other hand drives the vibration of whole implanter shell easily because implanter internals are strikeed with strength, and the implanter of vibration drives the sensor base vibration easily when implanter and sensor base have not yet separated, brings the discomfort.

Disclosure of Invention

The utility model aims at providing a buffer gear of implantation ware can cushion it before the pjncture needle withdraws from the host skin completely in order to reduce speed to reduce the sound when the back needle is accomplished, promoted user experience, also reduced the vibration of implantation ware shell, alleviate the host discomfort.

In order to achieve the purpose of the invention, the technical scheme adopted by the utility model is as follows: a cushioning mechanism of an implanter, the implanter comprising an implanter housing and an internal component disposed within the implanter housing, the internal component comprising a drive assembly and a needle assembly, the needle assembly comprising a needle assembly housing and a needle hub disposed in the needle assembly housing, a puncture needle attached to a distal end of the needle hub, the needle assembly moving in a distal direction to introduce a portion of a sensor electrode into a host subcutaneous tissue in response to actuation of the drive assembly, the needle hub moving in a proximal direction after the portion of the sensor electrode is introduced into the host subcutaneous tissue until the puncture needle exits the host skin, and the needle hub decreasing in velocity as it moves in the proximal direction.

In the above technical solution, a buffer assembly for reducing the moving speed of the needle holder is formed between the needle assembly housing and the needle holder.

In the above-described aspect, the buffer assembly includes a guide groove formed on the needle assembly housing and at least two guide ribs formed on the needle hub, the guide groove being configured to extend in a direction toward the proximal end and to gradually decrease in width, the guide ribs being parallel to each other and being disposed in the guide groove.

In the technical scheme, the proximal end of the guide groove is in interference fit with the guide rib.

In the above-described aspect, a flexible cushion pad for supporting the needle holder is disposed on an inner surface of the proximal end portion of the needle assembly housing.

In the above solution, the needle assembly further comprises an energy storage member arranged in the needle assembly housing, the energy storage member being configured to provide a force that drives the needle hub in the proximal direction.

In the above technical solution, the energy storage component is a return spring, one end of the return spring abuts against the inner surface of the needle assembly housing, and the other end of the return spring abuts against the needle base.

Because of the application of the technical scheme, compared with the prior art, the utility model has the following advantages:

the utility model reduces the moving speed of the needle base in the process that the needle base moves along the direction towards the near end by matching the guide groove with the guide rib, wherein the width of the guide groove is gradually reduced along the direction towards the near end, thereby reducing the force of the needle base impacting on the needle assembly shell when the puncture needle exits from the skin of a host and reducing the vibration of the implantation device shell caused by forceful impact; and the flexible buffer cushion arranged in the needle assembly shell reduces the force of the needle base impacting on the needle assembly shell and simultaneously reduces the sound generated by the impact, thereby improving the use comfort.

Drawings

Fig. 1 is a schematic diagram of the continuous blood glucose monitoring system of the present invention.

Fig. 2 is a schematic view of the body surface attachment unit of an embodiment of the present invention assembled with a transmitter.

Fig. 3 is a sectional view of the body surface attachment unit of the embodiment of the present invention assembled with a transmitter.

Fig. 4 is a schematic view of an implanter according to an embodiment of the invention.

Fig. 5 is an exploded view of a needle assembly in accordance with an embodiment of the present invention.

Fig. 6 is a front cross-sectional view of a needle assembly in accordance with an embodiment of the present invention.

Fig. 7 is a side sectional view of a needle assembly in accordance with an embodiment of the present invention.

Fig. 8 is a schematic view of the proximal end of a needle assembly housing of an embodiment of the present invention.

Wherein: 100. a host; 200. a body surface attachment unit; 210. a sensor electrode; 220. a sensor base; 230. an adhesive patch; 240. a release layer; 300. a receiver; 400. a transmitter; 500. an implanter; 510. an implanter housing; 511. an implanter upper shell; 512. an implanter lower housing; 520. a safety mechanism; 530. a trigger mechanism; 540. a needle assembly; 541. a needle assembly housing; 542. a needle seat; 543. puncturing needle; 544. an energy storage component; 545. a guide groove; 546. a guide rib; 547. a flexible cushion.

Detailed Description

The following description and examples detail certain exemplary embodiments disclosed. Those skilled in the art will recognize that there are numerous variations and modifications of the present invention encompassed by its scope. Thus, the description of a certain exemplary embodiment should not be taken as limiting the scope of the invention.

Continuous blood glucose monitoring system

FIG. 1 is a schematic illustration of a continuous blood glucose monitoring system attached to a host 100. A continuous blood glucose monitoring system comprising an on-skin body surface attachment unit 200 is shown, which is secured to the skin of a host 100 by a disposable sensor mount (not shown). The system comprises a body surface attachment unit 200 and a transmitter 400 for transmitting blood glucose information monitored by the body surface attachment unit 200 to a receiver 300, the receiver 300 typically being a smart phone, a smart watch, a dedicated device and the like. In use, the sensor electrode 210 is partially positioned under the skin of the host 100, and the sensor electrode 210 is electrically connected to the transmitter 400. The emitter 400 is engaged with the sensor mount 220, and the sensor mount 220 is attached to the adhesive patch 230 and secured to the skin of the host 100 by the adhesive patch 230.

The body surface attachment unit 200 may be attached to the skin of the host 100 with an implanter 500, which implanter 500 is adapted to provide a convenient and safe implantation procedure. Such an implanter 500 may also be used to insert the sensor electrodes 210 through the skin of the host 100. Once the sensor electrode 210 has been inserted, the implanter 500 is detached from the body surface attachment unit 200.

Body surface attachment unit

Referring to fig. 2 and 3, there is shown a structure of a body surface attachment unit 200 including a disposable sensor base 220, an electrode assembly disposed on the sensor base 220, and a transmitter 400 coupled to the sensor base 220, an adhesive patch 230 being attached to a lower surface of the sensor base 220 and fixed to the skin of a host 100 by the adhesive patch 230. In one embodiment, the transmitter 400 is snap fit to the sensor mount 220.

In one embodiment, the adhesive patch 230 is pre-attached with the release layer 240, and when the body surface attachment unit 200 is to be applied, the release layer 240 is peeled off, and then the sensor mount 220 is attached to the skin of the host 100 through the adhesive patch 230.

Implanting device

Referring to fig. 4, which illustrates the external structure of the implanter 500, the implanter 500 includes an implanter housing 510 and internal components disposed within the implanter housing 510, wherein the internal components include a safety mechanism 520, a trigger mechanism 530 and a drive assembly, and the safety mechanism 520 is partially disposed on the implanter housing 510. In one embodiment, the implanter housing 510 includes an implanter upper shell 511 and an implanter lower shell 512, the implanter upper shell 511 and the implanter lower shell 512 being assembled together by snap-fit fastening.

Referring to fig. 5 to 7, the present invention is directed to provide a buffer mechanism of an implanter 500, the inner member further includes a needle assembly 540, the needle assembly 540 includes a needle assembly housing 541 and a needle seat 542 disposed in the needle assembly housing 541, a puncture needle 543 is attached to a distal end of the needle seat 542, the needle assembly 540 moves in a distal direction to introduce a portion of the sensor electrode 210 into the skin of a host in response to an action of the driving assembly, the needle seat 542 moves in a proximal direction to withdraw from the skin of the host in the puncture needle 543 after the portion of the sensor electrode 210 is introduced into the skin of the host, and a speed of the needle seat 542 gradually decreases in a process of moving in the proximal direction.

During movement of the needle assembly 540 in the distal direction, the needle hub 542 and the puncture needle 543 are predisposed at the distal end within the needle assembly housing 541, and are stationary relative to the needle assembly housing 541, with the needle hub 542 and the puncture needle 543 moving along with the needle assembly housing 541. When the sensor electrode 210 is partially introduced into the skin of the host, the needle hub 542 is unlocked from the needle assembly housing 541 so that the needle hub 542 moves in a proximal direction with the piercing needle 543. Movement of hub 542 may be achieved by an energy storage member 544, for example, energy storage member 544 may be a return spring that is pre-compressed in an initial state and has one end abutting against the inner surface of needle assembly housing 541 and the other end abutting against hub 542.

To achieve a reduction in the speed of movement of the needle hub 542, a damping assembly is formed between the needle assembly housing 541 and the needle hub 542.

In one embodiment, the damping assembly includes a guide channel 545 formed on the needle assembly housing 541 and at least two guide ribs 546 formed on the hub 542, the guide channel 545 configured to extend in a proximal direction and gradually decrease in width, the guide ribs 546 being parallel to each other and configured in the guide channel 545. As needle hub 542 moves in the proximal direction, guide channels 545 gradually constrict and gradually create resistance to needle hub 542, with gradually increasing resistance, and as needle hub 542 moves to the proximal end of needle assembly housing 541, the proximal ends of guide channels 545 are in interference fit with guide ribs 546.

In order to achieve stability of movement of needle holder 542 in needle assembly housing 541, for example, a guide groove 545 may be formed on each of two opposing faces of needle assembly housing 541, and correspondingly, two guide ribs 546 may be formed on each of two opposing faces of needle holder 542, so that resistance applied to the two opposing faces of needle holder 542 may be equal, and smooth movement of needle holder 542 may be ensured.

Referring to fig. 8, a flexible cushion 547 for holding the needle hub 542 is provided on the inner surface of the proximal end of the needle assembly housing 541. The needle seat 542 and the needle assembly housing 541 are generally made of plastics, and the flexible cushion 547 is configured to prevent the needle seat 542 from directly impacting on the needle assembly housing 541, so that impact noise is reduced, and comfort is improved. For example, the flexible cushion 547 may be a rubber cushion.

The present invention is directed to providing a cushioning structure for a needle assembly, and other structures and working principles of the implant device are disclosed in detail in the applicant's prior application and will not be described herein.

The distal and proximal of the term "distal", "proximal", "distal", "proximal" are defined relative to the body surface attachment unit during implantation of the body surface attachment unit, specifically as proximal to the body surface attachment unit and distal from the body surface attachment unit.

The foregoing description, in terms of such full, clear, concise and exact terms, provides the best mode contemplated for carrying out the invention, and the manner and process of making and using it, to enable any person skilled in the art to which it pertains, to make and use the same. The invention is, however, susceptible to modifications and alternative constructions from that described above which are fully equivalent. Therefore, the invention is not to be limited to the specific embodiments disclosed. Rather, the invention covers all modifications and alternative constructions coming within the spirit and scope of the invention as generally expressed by the following claims, which particularly point out and distinctly define the subject matter of the invention. While the invention has been illustrated and described in detail in the drawings and foregoing description, such illustration and description are to be considered illustrative and not restrictive.

Unless otherwise defined, all terms (including technical and scientific terms) are to be given their ordinary and customary meaning to those skilled in the art, and are not to be taken as limiting to a specific or special meaning unless expressly defined herein. It should be noted that the use of particular terminology when describing certain features or aspects of the disclosure should not be taken to imply that the terminology is being redefined herein to be restricted to including any specific characteristics or aspects of the disclosure with which that terminology is associated. The terms and phrases used in this application, and variations thereof, particularly in the appended claims, should be construed to be open ended and not limiting unless otherwise expressly stated. As an example of the foregoing, the term "including" shall mean "including but not limited to" or the like.

Furthermore, although the foregoing has been described in some detail by way of illustration and example for purposes of clarity and understanding, it will be apparent to those of ordinary skill in the art that certain changes and modifications may be practiced. Therefore, the description and examples should not be construed as limiting the scope of the invention to the particular embodiments and examples described herein, but rather to cover all modifications and alternatives falling within the true scope and spirit of the invention.

Claims

1. A cushioning mechanism for an implanter, the implanter comprising an implanter housing and an internal component disposed within the implanter housing, the internal component comprising a drive assembly and a needle assembly, the needle assembly comprising a needle assembly housing and a needle hub disposed in the needle assembly housing, a puncture needle attached to a distal end of the needle hub, the needle assembly moving in a distal direction to introduce a portion of a sensor electrode subcutaneously into a host in response to actuation of the drive assembly, characterized in that: the needle hub moves in a proximal direction after a portion of the sensor electrode is introduced into the host beneath the skin until the piercing needle exits the host skin, and the needle hub gradually decreases in speed as it moves in the proximal direction.

2. The buffer mechanism of an implanter of claim 1, wherein: a buffer component for reducing the moving speed of the needle seat is formed between the needle assembly shell and the needle seat.

3. The buffer mechanism of an implanter of claim 2, wherein: the cushioning assembly includes a guide groove formed on the needle assembly housing and configured to extend in a proximal direction and gradually decrease in width, and at least two guide ribs formed on the needle hub, the guide ribs being parallel to each other and configured in the guide groove.

4. The buffer mechanism of an implanter of claim 3, wherein: the proximal end of the guide groove is in interference fit with the guide rib.

5. The buffer mechanism of an implanter of claim 1, wherein: a flexible cushion is provided on the inner surface of the proximal end of the needle assembly housing for holding the needle hub.

6. The buffer mechanism of an implanter of claim 1, wherein: the needle assembly further includes an energy storage component disposed in the needle assembly housing, the energy storage component configured to provide a force that drives the hub in a proximal direction.

7. The buffer mechanism of an implanter of claim 6, wherein: the energy storage component is a return spring, one end of the return spring is abutted against the inner surface of the needle assembly shell, and the other end of the return spring is abutted against the needle seat.