Pushing device

Abstract

The present disclosure relates to a pushing device, which includes: a shell, a transport assembly and a connector, wherein the shell has a supporting body, the supporting body has two clamping arms, and the transport assembly is releasably clamped with the two clamping arms; the transport assembly is configured to be movable between a proximal position and a distal position in the shell; the connector cooperates with the shell, the connector has two connecting ends and two connecting arms, the two connecting arms are respectively connected to the clamping arms located on the opposite sides, and when the connector is deformed due to the compression of the connecting end, the connecting arm moves along the direction of the pressure to make the two clamping arms that are gathered move in the opposite direction. In this case, the medical device can be moved to the skin surface by squeezing the connector, so that the user can reliably apply the medical device to the skin with one hand.

Description

[0001] This application is a divisional application of a patent application with an application date of December 30, 2019, application number 2019114026495, and invention name being a pushing device for medical devices. Technical Field

[0002] The present disclosure generally relates to a push device. Background Art

[0003] For the purpose of clinical diagnosis or personal health monitoring, it is sometimes necessary to insert a medical device containing an analyte sensor under the skin to detect the concentration of a specific component (such as glucose, salt, lactate, oxygen) in interstitial fluid.

[0004] In particular, for diabetic patients, it is necessary to monitor the glucose concentration in tissue fluid in real time and continuously on a daily basis to reduce and lower the occurrence of complications such as hypoglycemia and hyperglycemia in insulin-dependent diabetic patients. Usually, when the glucose concentration in the blood begins to decrease, the glucose concentration in the tissue fluid decreases before the glucose in the blood, indicating that the decrease in the glucose concentration in the tissue fluid can predict the impending hypoglycemia.

[0005] An analyte monitoring device that facilitates users to monitor the concentration of a specific component in tissue fluid in real time on weekdays usually includes an analyte sensor inserted below the skin and in contact with the tissue fluid and a sensor control device attached to the skin. Moreover, the analyte monitoring device is usually placed on the upper arm. In order to place the analyte monitoring device in a suitable working position, a push device is usually required. That is, the push device needs to insert the analyte sensor below the skin and apply the sensor control device to the skin at the same time. Such a push device usually requires the user to operate with one hand, so the push device is required to be simple to operate, safe, and reliable to insert and apply. In addition, in order to insert the analyte sensor below the skin, a needle tip is usually used. However, the needle tip usually brings fear of pain to people, so such a push device often needs to hide the needle tip to avoid being seen by the user. Such push devices currently on the market are often complicated to operate, the push force is uncontrollable, the position of the insertion process is offset, and the analyte monitoring device is not properly inserted and applied, resulting in poor user experience and unreliable monitoring results. Summary of the invention

[0006] The present invention is made in view of the above-mentioned prior art conditions, and its purpose is to provide a pushing device for medical devices that is simple to operate, safe, and reliable in insertion and application.

[0007] To this end, the present invention provides a pushing device for a medical device, which includes: a shell having a distal surface close to the skin surface; a transport component, which is configured to be movable between a proximal position and a distal position in the shell, the transport component being snap-fitted to the shell, and the transport component including a coupling member for engaging the medical device; a connecting member, which cooperates with the shell and has a releasing mechanism that can release the snap-fitting of the transport component and the shell; a touching member, which is linked to the releasing mechanism of the connecting member, and the transport component is released from the shell by touching the touching member; and a pushing driving member, which is arranged between the transport component and the shell, so as to move the transport component from the proximal position to the distal position when the transport component is released from the shell.

[0008] In the present invention, the user presses the contact piece to link with the connecting piece to release the clamping connection between the housing and the transport component, and the transport component pushes the medical device to the distal surface located on the skin surface under the push of the push driving member. In this case, by pressing the contact piece, the medical device can be moved to the skin surface under the preset thrust, thereby enabling the user to reliably apply the medical device to the skin with one hand.

[0009] In addition, in the push device involved in the present invention, optionally, the medical device includes an analyte sensor in contact with the subcutaneous tissue fluid and a sensor control device located on the skin surface. In this case, the analyte sensor can monitor the concentration of a specific component in the tissue fluid, and transmit the monitoring data to the display instrument through the sensor control device, thereby enabling the user to monitor the status of certain indicators in real time on a daily basis.

[0010] In addition, in the push device of the present invention, optionally, the monitoring object of the analyte sensor is glucose, thereby enabling the user to monitor the glucose concentration in the body in real time on a daily basis.

[0011] In addition, in the pushing device of the present invention, the pushing driving member may optionally include a spring with two ends contacting the housing and the transport assembly, respectively. In this case, when the housing is released from the engagement with the transport assembly, the transport assembly may move from the proximal position to the distal position under the thrust of the spring, thereby allowing the medical device to be attached to the skin surface.

[0012] In addition, in the pushing device involved in the present invention, optionally, the pushing device further comprises a needle tip support portion, which is used to support the needle tip and is configured to be movable between a proximal position and a distal position in the housing, and the needle tip support portion is releasably coupled to the transport assembly via a coupling member. Thus, the needle tip can be moved between the proximal position and the distal position via the needle tip support portion.

[0013] In addition, in the pushing device of the present invention, optionally, the pushing device further comprises a withdrawal driving member, and the withdrawal driving member is arranged between the transport assembly and the needle tip supporting portion. In this case, after the insertion and application actions are completed, the needle tip supporting portion can be driven by the withdrawal driving member to return from the distal position to the proximal position, thereby being able to pull the needle tip out of the body.

[0014] In addition, in the pushing device of the present invention, the withdrawing driving member may optionally include a spring with two ends contacting the transport assembly and the needle tip support portion, respectively. In this case, after the insertion and application actions are completed, the needle tip support portion may be pushed by the spring to return from the distal position to the proximal position, thereby allowing the needle tip to be pulled out of the body.

[0015] In addition, in the pushing device of the present invention, optionally, the housing includes a biasing member, and when the transport component moves from the proximal position to the distal position, the biasing member touches the coupling member and releases the coupling of the transport component to the needle tip support portion. In this case, after the insertion and application actions are completed, the needle tip support portion can automatically detach from the transport component and return from the distal position to the proximal position under the drive of the withdrawal drive member, thereby enabling the needle tip to be pulled out of the body.

[0016] In addition, in the pushing device involved in the present invention, optionally, the coupling member includes an elastic buckle that is releasably engaged with the needle tip supporting portion and a card that is engaged with the elastic buckle.

[0017] In this case, the elastic buckle is engaged with the card to couple the needle tip support part to the transport assembly, thereby enabling the needle tip support part to move from the proximal position to the distal position following the transport assembly.

[0018] In addition, in the pushing device of the present invention, optionally, the biasing member touches the card and releases the card from the elastic buckle. In some examples, the coupling of the transport component to the needle tip support portion can be released, whereby the biasing member can release the coupling of the transport component to the needle tip support portion by releasing the card.

[0019] In addition, in the push device involved in the present invention, optionally, when the transport assembly moves from the proximal position to the distal position, the engagement member releases the coupling to the medical device. In this case, the medical device can be separated from the transport assembly, thereby being able to remain in a state of application on the skin.

[0020] In addition, in the pushing device of the present invention, optionally, when the needle tip support portion is at the proximal position, the needle tip does not exceed the distal surface, thereby reducing the possibility of the needle tip puncturing the skin surface before the pushing device is triggered.

[0021] In addition, in the pushing device of the present invention, optionally, the needle tip is provided with a needle groove having an opening, the needle tip passes through a hole provided on the medical device, and the analyte sensor is placed in the needle groove. In this case, the needle tip can penetrate the subcutaneous tissue and place the analyte sensor in the subcutaneous tissue, so that the analyte sensor and the tissue fluid can be more fully contacted.

[0022] In addition, in the pushing device involved in the present invention, optionally, when the needle tip support portion moves from the proximal position to the distal position, the needle tip is inserted below the skin surface and the analyte sensor is placed in a position in contact with the tissue fluid, and the sensor control device is applied to the skin surface. In this case, the analyte sensor can monitor the concentration of a specific component in the tissue fluid, and the monitoring data is transmitted to a display device that is convenient for the user to read through the sensor control device, so that the user can monitor certain indicators in real time on a daily basis.

[0023] In addition, in the pushing device of the present invention, optionally, the touch member is arranged on the outside of the housing, so that the user can conveniently press the touch member to start the pushing device.

[0024] In addition, in the push device of the present invention, the connecting member can be deformed under the pressure of the contact member. In this case, the engagement between the transport component and the housing can be released, thereby enabling the transport component to move from the proximal position to the distal position under the drive of the push drive member. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 Schematic diagram showing a pushing device according to an embodiment of the present invention.

[0026] Figure 2 Schematic diagram showing a medical device according to this embodiment.

[0027] Figure 3 2 is a schematic diagram showing the structure of a housing according to the present embodiment.

[0028] Figure 4 1 is an exploded view showing the pushing device according to the present embodiment.

[0029] Figure 5 It is a partially enlarged view showing an exploded view of the pushing device according to the present embodiment.

[0030] Figure 6 It is a further exploded view showing the pushing device according to the present embodiment.

[0031] Figure 71 is an exploded view showing the transport unit according to the present embodiment.

[0032] Figure 8 1 is an exploded view showing the transport unit and the needle tip support portion according to the present embodiment.

[0033] Fig. 9 Schematic diagram showing a needle tip according to this embodiment.

[0034] Fig.10 It is a cross-sectional view showing an initial state of the pushing device according to the present embodiment.

[0035] Fig.11 1 is a cross-sectional view showing the pushing device according to the present embodiment when pushing is completed.

[0036] Fig.12 1 is a cross-sectional view showing the needle tip of the pushing device according to the present embodiment after retraction.

[0037] Explanation of symbols:

[0038] 1…pushing device, 9…medical device, 10…housing, 11…support body, 111…distal surface, 112…moving track, 113…covering part, 114…clamping arm, 12…upper cover, 13…base, 20…transportation assembly, 21…transportation body, 22…flange, 23…pushing connector, 24…coupling member, 241…elastic buckle, 242…card, 25…joining member, 251…joining surface, 252…protrusion, 30…connecting member, 40…touch member, 41…button, 50…pushing driving member, 51…spring, 60…needle tip supporting part, 70…withdrawal driving member, 71…spring, 80…needle tip, 81…needle groove. DETAILED DESCRIPTION

[0039] Hereinafter, with reference to the accompanying drawings, the preferred embodiments of the present invention will be described in detail. In the following description, the same symbols are given to the same components, and repeated descriptions are omitted. In addition, the accompanying drawings are only schematic diagrams, and the ratio of the dimensions of the components or the shapes of the components may be different from the actual ones.

[0040] Figure 1 Schematic diagram showing a pushing device according to an embodiment of the present invention. Figure 1 (a) is an oblique plan view showing a pushing device according to an embodiment of the present invention, Figure 1 (b) is an oblique bottom view showing the pushing device according to the embodiment of the present invention. Figure 2 Schematic diagram showing a medical device according to this embodiment. Figure 2 (a) is an oblique top view showing the medical device involved in this embodiment, Figure 2(b) is an oblique bottom view showing the medical device according to the present embodiment. Figure 3 2 is a schematic diagram showing the structure of a housing according to the present embodiment. Figure 4 1 is an exploded view showing the pushing device according to the present embodiment.

[0041] In this embodiment, the pushing device 1 may include a housing 10, a transport assembly 20, a connector 30, a touch member 40, and a push drive member 50. In the pushing device 1 involved in this embodiment, the housing 10 may have a distal surface 111 close to the skin surface; the transport assembly 20 is configured to be movable between a proximal position and a distal position in the housing 10, the transport assembly 20 is engaged with the housing 10, and the transport assembly 20 includes a coupling member 25 for engaging the medical device 9; the connector 30 cooperates with the housing 10 and has a release mechanism that can release the engagement between the transport assembly 20 and the housing 10; the touch member 40 is linked to the release mechanism of the connector 30, and the transport assembly 20 is released from the housing 10 by pressing the touch member 40; the push drive member 50 is disposed between the transport assembly 20 and the housing 10, so as to move the transport assembly 20 from the proximal position to the distal position when the transport assembly 20 is released from the housing 10.

[0042] In the pushing device 1 involved in this embodiment, the user can release the engagement of the housing 10 with the transport component 20 by pressing the touch member 40, and the transport component 20 pushes the medical device 9 to the distal surface 111 under the push of the push drive member 50. In this case, when the distal surface 111 is against the skin surface, the medical device 9 can be moved to the skin surface under a preset push force by pressing the touch member 40, so that the user can reliably apply the medical device 9 to the skin with one hand.

[0043] Figure 2 Schematic diagram showing a medical device according to this embodiment.

[0044] (Medical Devices)

[0045] In this embodiment, the medical device 9 may include an analyte sensor 91 for contacting tissue fluid under the skin surface and a sensor control device 92 that can be placed on the skin. In this case, the analyte sensor 91 can monitor the concentration of a specific component in the tissue fluid, and the monitoring data is transmitted to a display instrument that is convenient for the user to read through the sensor control device 92, so that the user can monitor the health status of certain physiological indicators in real time on a daily basis.

[0046] In some examples, the monitoring object of the analyte sensor 91 may be glucose. Thus, it is convenient for users to monitor the glucose concentration in the body in real time on a daily basis, so as to reduce and lower the occurrence of hypoglycemia and hyperglycemia and related complications in insulin-dependent diabetic patients.

[0047] In some examples, the sensor control device 92 may include a hole 921 through which the needle tip 80 passes and an engagement hole 922 coupled to the transport assembly 20. Thus, the medical device 9 can be coupled to the transport assembly 20 through the engagement hole 922.

[0048] In some examples, the surface of the sensor control device 92 that contacts the skin may have adhesive, thereby facilitating the medical device 9 to be attached to the skin surface by adhesion.

[0049] In some examples, the portion of the analyte sensor 91 exposed outside the sensor control device 92 may be in the shape of a thin strip, thereby facilitating the analyte sensor 91 to be more easily inserted under the skin and to be in more sufficient contact with the tissue fluid.

[0050] In some examples, the sensor control device 92 may be in a square shape. Thus, it can be more convenient to match with the square inner cavity of the base 13 of the housing 10. However, the shape of the sensor control device 92 is not limited thereto, and the sensor control device 92 may also be in a disc shape, a triangle shape, or an irregular shape. In other examples, the sensor control device 92 may have a shape that matches with the inner cavity of the base 13 of the housing 10.

[0051] (case)

[0052] Figure 3 2 is a schematic diagram showing the structure of a housing according to the present embodiment. Figure 4 1 is an exploded view showing the pushing device according to the present embodiment. Figure 5 It is a partially enlarged view showing an exploded view of the pushing device according to the present embodiment.

[0053] like Figure 3 , Figure 4 As shown, in this embodiment, the housing 10 may include a supporting body 11, an upper cover 12 and a base 13. Thus, it is easy to process and assemble the housing 10 in blocks, which is conducive to reducing the manufacturing cost. In other examples, the housing 10 may also be integrally formed. Thus, the pushing device 1 can have a relatively stable structure.

[0054] In this embodiment, the support body 11 can accommodate the transport component 20, and has a moving track 112 provided for the transport component 20 and a covering portion 113 covering the base 13. Specifically, one end of the moving track 112 is connected to the upper cover 12, and the other end is connected to the covering portion 113 covering the base 13. In this way, the transport component 20 can be easily moved between the proximal position and the distal surface 111 in the shell 10. In some examples, the moving track 112 has a shape that is narrower and longer than the covering portion 113. That is, in a horizontal plane perpendicular to the length direction of the moving track 112, the length and width of the moving track 112 are both smaller than the length and width of the projection of the covering portion 113 on the horizontal plane. In this way, the space occupied by the moving track 112 can be reduced and it is convenient for the touch member 40 to cover it.

[0055] In this embodiment, the support body 11 may include a clamping arm 114 disposed on the moving track 112. The clamping arm 114 may be releasably clamped with the flange 22 of the transport component 20, and the clamping arm 114 may be clamped with the connecting member 30. In this case, the deformation of the connecting member 30 may cause the two clamping arms 114 to open, thereby releasing the clamping of the clamping arms 114 and the flange 22, so as to facilitate the movement of the transport component 20 from the proximal position to the distal position. Specifically, the connecting member 30 is clamped to the clamping arm 114, and the clamping arm 114 is brought together to clamp the flange 22. When the connecting member 30 is subjected to pressure from both sides, the connecting member 30 drives the clamping arm 114 to separate to both sides, so that the flange 22 is separated from the support of the clamping arm 114.

[0056] In this embodiment, the clamping arm 114 can disengage the flange 22 under the push of the connecting member 30. In this case, the transport assembly 20 is disengaged from the clamping of the housing 10 and moves from the proximal position to the distal position under the action of the push driving member 50.

[0057] In this embodiment, the support body 11 may further include a distal surface 111, wherein the distal surface 111 may be in contact with the skin surface, thereby helping to define the position where the medical device 9 is placed on the skin surface.

[0058] In this embodiment, the upper cover 12 may be connected to the spring 51. In this case, the spring 51 may be located between the upper cover 12 and the conveying assembly 20, thereby providing support to the spring 51 to generate elastic force on the conveying assembly 20.

[0059] In this embodiment, the base 13 can accommodate the medical device 9. This can help prevent the medical device 9 from being damaged by foreign objects.

[0060] In this embodiment, the base 13 may have a cavity whose cross-sectional shape matches the shape of the medical device 9. Thus, the medical device 9 can be better protected.

[0061] In some examples, the material of the parts constituting the housing 10 may be selected from at least one of plastic, rubber and metal. In some examples, the material of the parts constituting the housing 10 may be selected from plastic. In some examples, the material of the parts constituting the housing 10 may be selected from at least one of ABS, POM and nylon. In some examples, the parts constituting the housing 10 may be injection molded by plastic. Thus, the rigidity of the housing 10 can be improved and the manufacturing cost can be reduced.

[0062] (Touch piece)

[0063] In this embodiment, the touch member 40 can be arranged outside the housing 10 (see Figure 4 ). In this embodiment, the touch member 40 may include a button 41, and the button 41 may be elastically deformable. In some examples, there may be two buttons 41. Thus, it is convenient for the user to operate the push device 1 with one hand, that is, the user can press the button 41 with one hand to start the push device 1.

[0064] In some examples, the touch button 41 is disposed corresponding to the connector 30 , so that the connector 30 can be deformed by pressing the touch button 41 .

[0065] In some examples, the material of the parts constituting the touch member 40 may be selected from at least one of plastic, rubber and metal. In some examples, the material of the parts constituting the touch member 40 may be selected from plastic. In some examples, the material of the parts constituting the touch member 40 may be selected from at least one of ABS, POM and nylon. In some examples, the parts constituting the touch member 40 may be injection molded by plastic. Thus, the rigidity of the touch member 40 can be improved and the manufacturing cost can be reduced.

[0066] (Connectors)

[0067] In this embodiment, the connecting member 30 can be deformed under the pressure of the contact member 40 to release the engagement between the conveying assembly 20 and the housing 10. Thus, the conveying assembly 20 can be moved from the proximal position to the distal position under the drive of the push driving member 50.

[0068] In this embodiment, the connecting member 30 can be connected to the clamping arm 114. In some examples, the connecting member 30 is arranged in an embracing manner on the outer periphery of the moving track 112. In some examples, the connecting member 30 has two L-shaped connecting arms, and the through holes on the connecting arms are matched with the protrusions on the clamping arm 114. In other examples, the connecting arm can be clamped on the clamping arm 114 on the side away from the connecting arm (see Figure 5 In this case, when the connector 30 is squeezed and deformed by the button 41, the connecting arm moves in the direction of the pressure, causing the two connecting arms to move in opposite directions, thereby causing the clamping arm 114 to open and causing the flange 22 to disengage from the clamping arm 114, thereby releasing the clamping of the housing 10 to the transport assembly 20.

[0069] In some examples, the material of the parts constituting the connector 30 may be selected from at least one of plastic, rubber and metal. In some examples, the material of the parts constituting the connector 30 may be selected from plastic. In some examples, the material of the parts constituting the connector 30 may be selected from at least one of ABS, POM and nylon. In some examples, the parts constituting the connector 30 may be injection molded by plastic. Thus, the rigidity of the connector 30 can be improved and the manufacturing cost can be reduced. In some examples, the material of the parts constituting the connector 30 may be selected from steel alloy. Thus, the elasticity and strength of the connector 30 can be improved.

[0070] (Push drive)

[0071] In this embodiment, the push drive member 50 may have a spring 51 whose two ends are in contact with the housing 10 and the transport assembly 20, respectively. In some examples, the push drive member 50 may be a compression spring. In this case, when the housing 10 is released from the engagement with the transport assembly 20, the transport assembly 20 may move from the proximal position to the distal position under the thrust of the spring 51, so that the medical device 9 can be attached to the skin surface.

[0072] In some examples, the push driving member 50 may be a pneumatic actuator, thereby being able to more effectively control the speed of pushing.

[0073] Figure 6 It is a further exploded view showing the pushing device according to the present embodiment. Figure 7 1 is an exploded view showing the transport unit according to the present embodiment. Figure 8 1 is an exploded view showing the transport unit and the needle tip support portion according to the present embodiment.

[0074] (Shipping Components)

[0075] like Figure 6 , Figure 7 As shown, in this embodiment, the transport assembly 20 may include a transport body 21 , a flange 22 , a push joint 23 , a coupling member 24 and a coupling member 25 .

[0076] In this embodiment, the transport body 21 is configured as the main support of the transport assembly 20, which accommodates the needle tip support 60 and provides a movement track 112 for the needle tip support 60. Therefore, it is convenient to move the needle tip support 60 between the proximal position and the distal position.

[0077] In some examples, the transport body 21, the flange 22 and the joint 25 may be integrally formed, thereby reducing manufacturing costs.

[0078] In some examples, the material of the parts constituting the transport body 21, the flange 22 and the joint 25 can be selected from at least one of plastic, rubber and metal. In some examples, the material of the parts constituting the transport body 21, the flange 22 and the joint 25 can be selected from plastic. In some examples, the material of the parts constituting the transport body 21, the flange 22 and the joint 25 can be selected from at least one of ABS, POM and nylon. In some examples, the parts constituting the transport body 21, the flange 22 and the joint 25 can be injection molded by plastic. Thereby, the rigidity of the transport component 20 can be improved and the manufacturing cost can be reduced. In the present embodiment, the push connector 23 can be in contact with the spring 51, thereby, the elastic force of the spring 51 can be transmitted to the transport body 21.

[0079] In this embodiment, the transport assembly 20 can be coupled with the needle tip support 60 through the coupling member 24. Thus, the needle tip support 60 can follow the transport assembly 20 to move from the proximal position to the distal position.

[0080] In this embodiment, the transport component 20 can be engaged with the medical device 9 via the engagement member 25. Thus, the medical device 9 can be moved from the proximal position to the distal position under the push of the transport component 20.

[0081] (Joints)

[0082] In this embodiment, the engaging member 25 may include an engaging surface 251 and a protrusion 252 .

[0083] In this embodiment, the engagement surface 251 contacts the sensor control device 92 of the medical device 9, and the protrusion 252 is inserted into the engagement hole 922 provided on the sensor control device 92. Thus, the medical device 9 can be moved from the proximal position to the distal position under the push of the transport body 21.

[0084] In this embodiment, when the transport assembly 20 moves from the proximal position to the distal position, the engagement member 25 releases the engagement of the transport assembly 20 with the medical device 9. In this case, the medical device 9 can be separated from the transport assembly 20, thereby being able to maintain the application state on the skin.

[0085] In some examples, the joint surface 251 and the protrusion 252 may be integrally formed, thereby reducing manufacturing costs.

[0086] In some examples, the material of the parts constituting the joint surface 251 and the protrusion 252 can be selected from at least one of plastic, rubber and metal. In some examples, the material of the parts constituting the joint surface 251 and the protrusion 252 can be selected from plastic. In some examples, the material of the parts constituting the joint surface 251 and the protrusion 252 can be selected from at least one of ABS, POM and nylon. In some examples, the parts constituting the joint surface 251 and the protrusion 252 can be injection molded by plastic. Thus, the rigidity of the joint 25 can be improved and the manufacturing cost can be reduced.

[0087] In other examples, the joint surface 251 and the protrusion 252 may be made of different materials. In this case, the joint surface 251 may be made of a harder material (e.g., plastic) to improve the rigidity of the joint surface 251, while the protrusion 252 may be made of a softer material (e.g., rubber) to improve the engagement between the protrusion 252 and the engagement hole 922 provided on the sensor control device 92.

[0088] (Needle tip support part)

[0089] In this embodiment, the pushing device 1 may further include a needle tip support portion 60, which supports the needle tip 80 and is configured to be movable between a proximal position and a distal position in the housing 10, and the needle tip support portion 60 is releasably coupled to the transport assembly 20 via a coupling member 24. Thus, the needle tip support portion 60 can move with the needle tip 80 between the proximal position and the distal position.

[0090] In some examples, the needle tip support 60 can be engaged with the needle tip 80 in a claw manner. Thus, it is convenient to load the needle tip 80 into the needle tip support 60.

[0091] Fig. 9 Schematic diagram showing a needle tip according to this embodiment.

[0092] (needle tip)

[0093] In this embodiment, the needle tip 80 may be provided with a needle groove 81 having an opening, the needle tip 80 passes through a hole 921 provided on the medical device 9, and the analyte sensor 91 is placed in the needle groove 81. In this case, the needle tip 80 can penetrate the skin and subcutaneous tissue, and when withdrawn, the analyte sensor 91 is placed in the subcutaneous tissue, so that the analyte sensor 91 can remain in the tissue fluid and be in sufficient contact.

[0094] In this embodiment, when the needle tip support 60 moves from the proximal position to the distal position, the needle tip 80 can be inserted below the skin surface and the analyte sensor 91 is placed in contact with the tissue fluid, and the sensor control device 92 is attached to the skin surface. In this case, the analyte sensor 91 can monitor the concentration of a specific component in the tissue fluid, and the monitoring data is transmitted to a display device that is convenient for the user to read through the sensor control device 92, so that the user can monitor some of his or her physiological indicators in real time on a daily basis.

[0095] In some examples, the material of the needle tip 80 can be selected from stainless steel, thereby helping the needle tip 80 to better penetrate the skin and subcutaneous tissue.

[0096] (Retraction drive)

[0097] In this embodiment, the pushing device 1 further includes a retraction drive 70, which is disposed between the transport assembly 20 and the needle tip support 60 to move the needle tip support 60 from the distal position to the proximal position when the transport assembly 20 reaches the distal position. In this case, after the insertion and application actions are completed, the needle tip support 60 can be driven by the retraction drive 70 to return from the distal position to the proximal position, so that the needle tip 80 can be pulled out of the body.

[0098] In this embodiment, the withdrawal drive member 70 has a spring 71 whose two ends are in contact with the transport assembly 20 and the needle tip support portion 60, respectively. In some examples, the withdrawal drive member 70 can be a compression spring. In this case, after the insertion and application actions are completed, the needle tip support portion 60 can be pushed by the spring 71 to return from the distal position to the proximal position, so that the needle tip 80 can be pulled out of the body.

[0099] (Biasing piece)

[0100] In this embodiment, the housing 10 includes a biasing member 131, and when the transport assembly 20 moves from the proximal position to the distal position, the biasing member 131 contacts the coupling member 24 to release the coupling of the transport assembly 20 to the needle tip support 60. In this case, after the insertion and application actions are completed, the needle tip support 60 can automatically detach from the transport assembly 20, and return from the distal position to the proximal position under the drive of the withdrawal drive member 70, so that the needle tip 80 can be pulled out of the body.

[0101] In some examples, the biasing member 131 may be two arm-shaped structures disposed on the base 13 , thereby facilitating the biasing member 131 to collide with the card 242 to release the clamping of the elastic buckle 241 to the needle tip supporting portion 60 .

[0102] (Coupling)

[0103] In this embodiment, the coupling member 24 includes an elastic buckle 241 that is releasably engaged with the needle tip supporting portion 60 and a card 242 that is engaged with the elastic buckle 241. In this case, the elastic buckle 241 is engaged with the card 242 to couple the needle tip supporting portion 60 to the transport body 21, so that the needle tip supporting portion 60 can follow the transport body 21 to move from the proximal position to the distal position.

[0104] In this embodiment, the biasing member 131 touches the card 242 and releases the card 242 from the elastic buckle 241, thereby releasing the coupling of the transport assembly 20 to the needle tip support 60. In this case, the biasing member 131 releases the coupling of the transport assembly 20 to the needle tip support 60, and the needle tip support 60 can be driven by the withdrawal drive member 70 to return from the distal position to the proximal position, so that the needle tip 80 can be pulled out of the body.

[0105] In some examples, the material of the parts constituting the elastic buckle 241 and the card 242 can be selected from at least one of plastic and metal. In some examples, the material of the parts constituting the elastic buckle 241 and the card 242 can be selected from steel alloy. Thus, the elasticity and strength of the elastic buckle 241 and the card 242 can be improved.

[0106] In this embodiment, when the needle tip support portion 60 is at the proximal position, the needle tip 80 is completely covered by the housing 10. In this case, the needle tip 80 can be protected by the housing 10 to avoid contact with foreign objects, thereby preventing deformation or contamination, and the needle tip 80 can be invisible to the user, thereby improving the safety and comfort of the pushing device 1.

[0107] Fig.10 It is a cross-sectional view showing an initial state of the pushing device according to the present embodiment.

[0108] Fig.11 1 is a cross-sectional view showing the pushing device according to the present embodiment when pushing is completed.

[0109] Fig.12 1 is a cross-sectional view showing the needle tip of the pushing device according to the present embodiment after retraction.

[0110] In this embodiment, the user presses the button 41 to squeeze the connector 30 to deform, thereby releasing the engagement of the engagement arm 114 provided on the housing 10 with the flange 22 provided on the transport assembly 20. The transport body 21 moves from the proximal position to the distal position under the push of the spring 51, and the analyte sensor 91 is inserted through the needle tip 80 to a position below the skin and in contact with the tissue fluid, while the sensor control device 92 is attached to the skin surface. When the transport body 21 moves from the proximal position to the distal position, the biasing member 131 provided on the base 13 touches the card 242 and releases the engagement of the card 242 with the elastic buckle 241, thereby releasing the constraint of the elastic buckle 241 on the needle tip support 60, and the needle tip support 60 moves from the distal position to the proximal position with the needle tip 80 under the push of the spring 71.

[0111] Although the present invention is specifically described above in conjunction with the accompanying drawings and embodiments, it is to be understood that the above description does not limit the present invention in any form. Those skilled in the art can deform and change the present invention as needed without departing from the essential spirit and scope of the present invention, and these deformations and changes all fall within the scope of the present invention.

Claims

1. A pushing device, characterized in that: The cam is configured to move the two ends of the transport assembly to a different position than the end of the transport assembly and to move the two ends of the transport assembly to a different position than the end of the transport assembly. The transport assembly further comprises a coupling member for coupling with a medical device, wherein the medical device comprises an analyte sensor in contact with subcutaneous tissue fluid and a sensor control device located on the surface of the skin, and the coupling member comprises a coupling surface for contacting the sensor control device and a protrusion for inserting into a coupling hole provided on the sensor control device; The pushing device further comprises a pushing driving member having two ends of a spring respectively contacting the housing and the transport assembly, wherein the spring is configured to push the transport assembly from the proximal position to the distal position after the transport assembly is released.

2. The pushing device according to claim 1, characterized in that: It also includes a touch piece arranged on the outer side of the shell, and the touch piece includes a button linked with the connecting end of the connecting piece, and the transport component is released from the shell by pressing the button of the touch piece.

3. The pushing device according to claim 1, characterized in that: The engagement member releasably engages the medical device, and when the transport assembly moves from the proximal position to the distal position, the engagement member releases engagement with the medical device.

4. The pushing device according to claim 1, characterized in that: The transport assembly comprises a flange which is releasably engaged with the engaging arm. When the connecting member is subjected to pressure from both sides, the connecting member drives the engaging arm to separate toward both sides so that the flange is separated from the support of the engaging arm.

5. The pushing device according to claim 4, characterized in that: The material of the flange is selected from at least one of ABS, POM and nylon.

6. The pushing device according to claim 1, characterized in that: The connecting arm and the clamping arm are connected by matching the through hole on the connecting arm with the protrusion on the clamping arm.

7. The pushing device according to claim 1, characterized in that: The shell comprises an upper cover connected to one end of the moving track and connected to the spring, and a base connected to the other end of the moving track and used to accommodate the medical device.

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