Needle assisting device

Abstract

The invention provides a needle assisting device. The needle assisting device can be switched from a locking state to an unlocking state. The needle assisting device comprises an implantation needle and a first operation piece. The first operating member is configured to execute a firing action when receiving a firing operation. The firing action causes the implant needle to move in a proximal direction to implant the sensor into the target tissue. In the locking state, the firing action of the first operation piece is limited. In the unlocking state, the percussion action of the first operation piece is allowed. The percussion action of the first operation piece is limited, most unconscious percussion operation can be filtered out, and therefore the risk that the needle assisting device is accidentally percussed is reduced.

Description

Technical Field

[0001] This disclosure relates to the field of medical device technology, specifically to a needle-assist device. Background Technology

[0002] Medical devices that monitor a user's health by implanting sensors into the user's target tissue are known. For example, a continuous glucose monitor in tissue fluid monitors analytes in a user's tissue fluid by percutaneously implanting a sensor into the user's target tissue. For several reasons, such as the sensors' typically being soft, implantation requires the use of a needle applicator. The applicator is activated by an operation to implant the sensor into the user's target tissue. To facilitate sensor implantation, the activation of the applicator is usually straightforward, increasing the likelihood of accidental activation. Accidental activation can pose safety risks, such as puncture wounds to the user. Accidental activation can also cause the medical device and / or the applicator to malfunction, resulting in financial losses. Summary of the Invention

[0003] In view of this, the present disclosure aims to provide a needle assist device to solve the problem that needle assist devices in the related art are easily accidentally fired.

[0004] This disclosure provides a needle assist device. The needle assist device is switchable from a locked state to an unlocked state and includes an implantation needle and a first actuating member. The first actuating member is configured to perform a firing action upon receiving a firing operation, the firing action causing the implantation needle to move proximally to implant a sensor into target tissue. In the locked state, the firing action of the first actuating member is restricted. In the unlocked state, the firing action of the first actuating member is permitted.

[0005] Applying the technical solution of this disclosure, when the first operating member receives a firing operation, it moves proximally to execute the firing action. This firing action causes the implantation needle to move proximally, thereby enabling the sensor to be implanted into the target tissue. In the locked state, because the firing action of the first operating member is restricted, the implantation needle cannot implant the sensor into the target tissue. In the unlocked state, because the firing action of the first operating member is allowed, the implantation needle can move proximally to implant the sensor into the target tissue. By restricting the firing action of the first operating member, most unintentional firing operations can be filtered out, thereby reducing the risk of accidental firing of the needle-implanting device.

[0006] In one embodiment, the needle-aid device further includes a blocking member, and the first actuating member includes a blocked portion. In the locked state, the blocking member is located on the movement path of the blocked portion. In the unlocked state, the blocking member is located outside the movement path.

[0007] Therefore, by using the blocking member and the blocked part to block and cooperate, the first operating member is restricted from performing the firing action, which has the advantages of simple structure and easy implementation.

[0008] In one embodiment, the needle aid further includes a second actuating member configured to perform a switching action upon receiving a switching action, thereby switching the needle aid from a locked state to an unlocked state. The switching action causes relative movement between the blocking member and the blocked portion, thereby causing the blocking member to leave the movement path.

[0009] Therefore, the method of releasing the needle aid by performing a switching action through the second operating member, causing relative movement between the blocking member and the blocked part, has the advantage of being easy to operate.

[0010] In one embodiment, the blocking member is fixed to or formed on the second operating member so as to move with the second operating member when the second operating member performs a switching action.

[0011] Therefore, the above structure simplifies the needle-aid device and makes it easier to operate.

[0012] In one embodiment, the first operating member moves along the proximal direction when performing the firing action, and the second operating member rotates about an axis extending along the proximal direction when performing the switching action. In the locked state, the blocking member and the blocked part are aligned along the proximal direction; in the unlocked state, the blocked part and the blocking member are offset along the proximal direction.

[0013] Accordingly, the second operating member is rotated about an axis extending in the proximal direction, which allows the firing action of the first operating member to be enabled. Then, the first operating member is moved in the proximal direction to perform the firing action, which has the advantage of being easy to operate.

[0014] In one embodiment, the needle aid further includes a support defining an axis, and the second operating member is cylindrical and sleeved on the support to be rotatably supported by the support about the axis.

[0015] Therefore, by fitting the second operating component onto the support component, the support component can be used to support the second operating component, preventing it from falling off.

[0016] In one embodiment, a first actuating member is fitted onto a support member and is movably supported by the support member in a proximal direction. The first and second actuating members are arranged sequentially in the proximal direction. As the first actuating member performs a firing action, the second actuating member at least partially enters the space between the first actuating member and the support member.

[0017] Accordingly, after the first operating element performs the firing action, by allowing at least part of the second operating element to enter the space between the first operating element and the support element, the space extending in the proximal direction is fully utilized, which is beneficial to the miniaturization of the needle assist device.

[0018] In one embodiment, the blocking element is a blocking protrusion extending in a direction about the axis. And / or, the blocked portion is a blocked protrusion extending in a proximal direction.

[0019] The aforementioned convex structure simplifies the structure of both the blocking component and the blocked part, making them easy to manufacture.

[0020] In one embodiment, in the proximal direction, the proximal end of the second actuating member is flush with or extends beyond the proximal end of the support member.

[0021] Therefore, the above structure ensures that the support component is not exposed, and the second operating component can cover the support component, thus improving the overall integrity of the needle assist device.

[0022] In one embodiment, the second actuating member includes a body portion and a flange portion. The body portion surrounds the support member, and the flange portion projects radially inward from the proximal end of the body portion to cover the proximal end of the support member.

[0023] Therefore, by setting the flange, when the needle aid comes into contact with the patient's skin, the flange can be used to contact the patient, avoiding the patient's skin from entering the gap between the support and the main body due to the absence of a flange, which would cause the patient to feel pain, thus improving the patient's user experience.

[0024] In one embodiment, the top of the second operating member is provided with a positioning notch, which has opposing first and second positioning edges in the direction around the axis. The outer periphery of the support member is provided with a positioning protrusion located in the positioning notch. As the second operating member performs a switching action, the positioning protrusion moves from a position abutting against the first positioning edge to a position abutting against the second positioning edge.

[0025] Accordingly, by positioning the protrusions in conjunction with the first and second positioning edges of the positioning notch, the second operating element can only rotate within the space defined by the first and second positioning edges, thus preventing the second operating element from rotating excessively and causing the patient to not know how to operate.

[0026] In one embodiment, one of the outer periphery of the support member and the inner periphery of the second operating member is provided with a positioning protrusion and the other is provided with a positioning slot. Both the positioning slot and the positioning protrusion extend in a direction about the axis, and the positioning slot receives the positioning protrusion.

[0027] Accordingly, by using the combination of positioning protrusions and positioning slots, the second operating member can be assembled onto the support member, allowing the second operating member to rotate around the axis of the support member without falling off.

[0028] In one embodiment, the needle aid further includes a support defining an axis, and a second actuation element is configured as a push button mounted on the support to be rotatably supported by the support about the axis.

[0029] Therefore, by rotating the push button relative to the support member, the first operating member is allowed to fire, which has the advantages of simple structure and easy operation.

[0030] In one embodiment, the push button includes a button body and a locking portion, the support includes a groove extending in a direction about an axis and radially penetrating the support, the button body is located outside the support, the locking portion passes through the groove and engages with the support, and the locking portion is slidable along the groove.

[0031] Accordingly, by aligning the button body and the blocked portion of the first operating member in the axial direction, a blocking fit is formed. The button body is mounted on the support member by engaging with the snap-fit ​​portion, which has the advantage of simple structure.

[0032] In one embodiment, the needle aid further includes a support, a second actuation member is attached to the support, and the second actuation member is detached from the support by performing a switching action.

[0033] Accordingly, by removing the second operating component from the support, the needle assist device can be switched from a locked state where firing is restricted to an unlocked state where firing is permitted, making the structure simple and easy to operate.

[0034] In one embodiment, the second actuating member includes a clamping portion, and the support member includes a clamped portion, the clamping portion clamping the clamped portion to attach the second actuating member to the support member.

[0035] Accordingly, by cooperating with the clamping part and the clamped part, the second operating member is attached to the support member, which facilitates the operation of the second operating member and allows the second operating member to be separated from the support member.

[0036] In one embodiment, when the first operating member performs a firing action, it moves proximally and is fitted onto the support member to be movably supported by the support member in the proximal direction. A blocking portion is located on the inner periphery of the first operating member, and a clamping portion includes an inner clamping arm and an outer clamping arm located on the inner and outer sides of the support member, respectively. The distal end of the outer clamping arm has an outwardly protruding blocking member and an inwardly protruding pressure-bearing portion. In the locked state, the blocking member and the blocked portion are opposite each other in the proximal direction, and the pressure-bearing portion abuts against the distal end of the clamped portion.

[0037] Accordingly, by the cooperation of the pressure-bearing part and the clamped part, the second operating member can be attached to the support member. By the cooperation of the blocking part and the blocked part, the second operating member can restrict the first operating member, thereby limiting the firing action of the first operating member. By removing the second operating member from the support member, the restriction on the first operating member can be released, allowing the first operating member to move in the proximal direction, and the firing action can be permitted.

[0038] In one embodiment, the first operating member includes a limiting portion. When the blocked portion and the blocking member abut against each other, the limiting portion is located outside the blocked portion and abuts against the blocked portion to limit the outward deformation of the outer clamping arm.

[0039] Accordingly, by the abutting cooperation between the blocking member and the blocked part, the clamp arm can be prevented from deforming outward, so that the second operating member will not detach from the support member, thereby preventing the firing action of the first operating member of the needle aid from being executed, thus enhancing the reliability of the product.

[0040] In one embodiment, the first actuator moves along the proximal direction when performing the firing action, and the second actuator moves along the proximal direction when performing the switching action.

[0041] Therefore, since the first and second operating components have the same direction of movement, the user does not need to distinguish the direction to complete the firing of the needle assist device, which is convenient for operation.

[0042] In one embodiment, the second actuator performs a switching action, driving the blocking element away from the movement path.

[0043] Accordingly, by operating the second operating element to drive the blocking element to move, the firing action of the first operating element is allowed, which facilitates operation.

[0044] In one embodiment, the needle aid further includes a support member with a spring arm and a blocking member disposed on the spring arm. A second operating member performs a switching action to cause the spring arm to elastically deform, thereby driving the blocking member away from the movement path.

[0045] Accordingly, the movement of the second operating element deforms the spring arm, thereby moving the blocking element, which simplifies the structure.

[0046] In one embodiment, when the first operating member performs a firing action, it moves proximally and is fitted onto a support member to be movably supported by the support member in the proximal direction. A blocking portion is located on the inner periphery of the first operating member and protrudes inward, while the blocking member protrudes outward. A second operating member is at least partially located between the first operating member and the support member, and when the second operating member performs a switching action, it moves distally to cause the spring arm to elastically deform inward by compressing the blocking member.

[0047] Accordingly, by moving the second operating member to the distal direction, the blocking member can be squeezed to cause the projectile arm to elastically deform inward, thereby causing the blocking member on the projectile arm to avoid the blocked part, so that the firing action of the first operating member can be allowed.

[0048] In one embodiment, the inner periphery of the first operating member is provided with a first slot and a second slot arranged sequentially in a distal direction, and the second operating member is provided with an engaging protrusion. In the locked state, the engaging protrusion engages with the first slot to restrict the movement of the second operating member in a proximal direction. In the unlocked state, the engaging protrusion engages with the second slot to restrict the movement of the second operating member in a proximal direction, and the engaging protrusion abuts against the outside of the blocking member to keep the blocking member outside the movement path.

[0049] Accordingly, the first and second locking slots can limit the second operating element to the first operating element, preventing it from falling off. Furthermore, the second locking slot prevents the second operating element from moving proximally, thus preventing the needle assist device from switching from the unlocked to the locked state, reminding the patient to use the device, and preventing it from becoming ineffective due to external contamination.

[0050] In one embodiment, the needle assist device further includes a support member. When the first operating member performs a firing action, it moves proximally. The first operating member is fitted onto the support member and is movably supported by the support member in the proximal direction. A second operating member is at least partially located between the first operating member and the support member. When the second operating member performs a switching action, it moves distally. A blocked portion is located on the inner periphery of the first operating member, and a ball seat is provided on the outer periphery of the support member. The blocking member is a blocking ball. In the locked state, the blocking ball is held by the ball seat and positioned on the movement path of the blocked portion. As the second operating member moves distally, it pushes the blocking ball away from the ball seat, thus moving it away from the movement path of the blocked portion.

[0051] Therefore, the ball seat can hold the blocking ball, and the cooperation between the ball seat and the blocking ball can block the first operating element. By pushing the blocking ball away from the ball seat by the second operating element, the blocked part can be avoided, allowing the first operating element to be fired.

[0052] In one embodiment, the first actuator is further configured to perform a switching action when receiving a switching action, the switching action causing the blocked part to move relative to the blocking member so that the blocking member leaves the movement path.

[0053] Therefore, the first operating element can receive both firing and switching actions, allowing the user to complete the needle assisting action of the needle assisting device simply by operating the first operating element, which has the advantage of being easy to operate.

[0054] In one embodiment, the first actuating member moves along the proximal direction when performing a firing action, and rotates about an axis extending along the proximal direction when performing a switching action. In the locked state, the blocking member and the blocked portion are aligned along the proximal direction. In the unlocked state, the blocked portion and the blocking member are offset along the proximal direction.

[0055] Therefore, the needle-assist device is unlocked by rotating the first operating component, which has the advantages of simple structure and easy operation.

[0056] In one embodiment, the needle aid further includes a support defining an axis, with a first operating member fitted onto the support and movably supported by the support in a proximal direction and rotatably about the axis. A blocking member is located on the outer periphery of the support, with the blocked portion located on the inner periphery of the first operating member.

[0057] Accordingly, by rotating the first operating member and the support member relative to each other, the firing action of the first operating member can be allowed. By moving the first operating member and the support member relative to each other, the switching action of the first operating member can be executed to enable the needle assist device to complete the needle assist action, which makes the structure of the needle assist device simple and facilitates its miniaturization.

[0058] In one embodiment, the needle assist device further includes a blocking member, and the first operating member has a blocked portion, with the blocking member located in the movement path of the blocked portion. In the locked state, the blocking member is restricted from leaving the movement path to limit the first operating member from performing a firing action by blocking the blocked portion. In the unlocked state, the blocked portion can compress the blocking member to remove it from the movement path, allowing the first operating member to perform a firing action.

[0059] Accordingly, by pressing the blocked part with the blocking member, the firing action of the first operating member is changed from being restricted to being allowed, thereby causing the needle assist device to switch from the locked state to the unlocked state.

[0060] In one embodiment, the needle aid further includes a second actuating member configured to perform a switching action upon receiving a switching action, thereby switching the needle aid from a locked state to an unlocked state. In the locked state, the second actuating member engages with a blocking member to restrict the blocking member from leaving the movement path. In the unlocked state, the second actuating member disengages from the blocking member to allow the blocking member to be pressed out of the movement path by the blocked portion.

[0061] Accordingly, by receiving the switching action through the second operating member, the second operating member is switched from the limiting blocking member to being separated from the blocking member, thereby allowing the blocking member to be squeezed and moved, so that the needle assisting action of the needle assisting device can be executed.

[0062] In one embodiment, in the locked state, the second actuating member abuts against the blocking member to restrict the blocking member from leaving the movement path. In the unlocked state, the second actuating member disengages from the blocking member to allow the blocking member to be pressed out of the movement path by the blocked portion.

[0063] Therefore, by making the second operating member abut against the blocking member, the blocking member is restricted, which has the advantage of simple structure.

[0064] In one embodiment, the needle aid further includes a support member with a spring arm and a blocking member disposed on the spring arm; when the blocking member is pressed by the blocked part, the spring arm elastically deforms and causes the blocking member to leave the movement path.

[0065] Therefore, the aforementioned elastic arm structure is conducive to rapid deformation when squeezed by the blocked part, thus losing its restraining effect on the blocked part.

[0066] In one embodiment, when the first operating member performs the firing action, it moves in the proximal direction. The first operating member is fitted onto the support member and is movably supported by the support member in the proximal direction. A blocking member protrudes outward from the spring arm. The second operating member has a through groove that extends to the distal end of the second operating member to form an opening. The spring arm extends into the through groove through the opening. The blocking member is located outside the second operating member. The through groove includes a narrow groove portion and a wide groove portion in sequence in the proximal direction. The width of the narrow groove portion is smaller than the width of the blocking member, and the width of the wide groove portion is larger than the width of the blocking member. In the locked state, the blocking member is located at the narrow groove portion. In the unlocked state, the blocking member is located at the wide groove portion.

[0067] Accordingly, by positioning the blocking member at the wide groove, the blocking member can be avoided by utilizing the wide groove, allowing the blocking member to move inward, thereby causing the spring arm to elastically deform inward and avoid the blocked part. Attached Figure Description

[0068] It should be understood that the following figures only illustrate certain embodiments of this disclosure and should not be construed as limiting the scope.

[0069] It should be understood that the same or similar reference numerals are used in the accompanying drawings to denote the same or similar elements.

[0070] It should be understood that the accompanying drawings are only schematic, and the dimensions and scales of the elements in the drawings are not necessarily precise.

[0071] Figure 1 This is a schematic diagram of the structure of a medical device according to a disclosed embodiment.

[0072] Figure 2 This is a schematic diagram of the structure of a needle-aid device according to a disclosed embodiment.

[0073] Figure 3 yes Figure 2 An exploded view of the needle-aid device.

[0074] Figure 4 yes Figure 3 An exploded view of the needle-aid device body.

[0075] Figure 5 yes Figure 3 The diagram shows the structure of the needle assist device, which is in a locked state.

[0076] Figure 6 yes Figure 3 The diagram shows the structure of the needle assist device, which is in the unlocked state.

[0077] Figure 7 yes Figure 3 The diagram shows a longitudinal cross-sectional view of the needle assist device body, in which the first operating element is located in the first position.

[0078] Figure 8 yes Figure 3 The diagram shows a longitudinal cross-sectional view of the needle assist device body, in which the first operating element is located in the second position.

[0079] Figure 9 yes Figure 3 A longitudinal cross-sectional view of the needle-assist device body, in which the first energy storage element is released.

[0080] Figure 10 yes Figure 3 A longitudinal cross-sectional view of the needle-assist device body, in which the second energy storage element is released.

[0081] Figure 11 for Figure 4 A longitudinal sectional view of the first operating component.

[0082] Figure 12 for Figure 4 A schematic diagram of the supporting components.

[0083] Figure 13 for Figure 4 A cross-sectional view of the firing pin.

[0084] Figure 14 for Figure 4 A schematic diagram of the needle-pulling component.

[0085] Figure 15 for Figure 4 A schematic diagram of the structure of the second operating component.

[0086] Figure 16 The diagram shows the structure of the needle aid according to Modification 1, wherein the needle aid is in a locked state.

[0087] Figure 17 for Figure 16 A partial cross-sectional view of the needle-aid device.

[0088] Figure 18 The diagram shows the structure of the needle aid according to Modification 1, wherein the needle aid is in the unlocked state.

[0089] Figure 19 for Figure 18 A partial cross-sectional view of the needle-aid device.

[0090] Figure 20 The diagram shows the structure of the needle aid according to Modified Example 2, wherein the needle aid is in a locked state.

[0091] Figure 21 for Figure 20 A partial cross-sectional view of the needle-aid device.

[0092] Figure 22 The diagram shows the structure of the needle aid according to Modified Example 2, wherein the needle aid is in the unlocked state.

[0093] Figure 23 for Figure 22 A partial cross-sectional view of the needle-aid device.

[0094] Figure 24 The diagram shows the structure of the needle aid according to Modification 4, wherein the needle aid is in a locked state.

[0095] Figure 25 for Figure 24 A partial cross-sectional view of the needle-aid device.

[0096] Figure 26 The diagram shows the structure of the needle aid according to Modification 4, wherein the needle aid is in the unlocked state.

[0097] Figure 27 for Figure 26 A partial cross-sectional view of the needle-aid device.

[0098] Figure 28 The diagram shows the structure of the needle aid according to Modified Example 5, wherein the needle aid is in a locked state.

[0099] Figure 29 The diagram shows the structure of the needle aid according to Modification 6, wherein the needle aid is in a locked state.

[0100] Figure 30 The diagram shows the structure of the needle aid according to Modification 6, wherein the needle aid is in the unlocked state.

[0101] Figure 31 The diagram shows the structure of the needle assist device according to Modification 6, wherein the first operating member is located in the second position.

[0102] Figure 32 This is a cross-sectional view of the first operating member of the needle assist device according to Modified Example 6.

[0103] Figure 33 This is a structural schematic diagram of the support member of the needle assist device according to Modified Example 6.

[0104] Figure 34This is a cross-sectional view of the needle aid according to Modified Example 7, wherein the needle aid is in a locked state.

[0105] Figure 35 The assembly drawing of the support member and the second operating member of the needle aid according to the disclosed Modification 7 shows the needle aid in a locked state.

[0106] Figure 36 This is a cross-sectional view of the needle aid according to the disclosed Modification 7, wherein the needle aid is in the unlocked state.

[0107] Figure 37 The following is an assembly drawing of the support member and the second operating member of the needle aid according to the disclosed Modification 7, wherein the needle aid is in the unlocked state. Detailed Implementation

[0108] Numerous specific details are set forth below to provide an understanding of the structure, function, and purpose of the embodiments illustrated in the specification and figures. It is to be understood that this document and the illustrated embodiments are non-limiting examples, and thus it can be appreciated that the particular structural and functional details disclosed herein are representative and exemplary. Variations and changes may be made to these embodiments without departing from the scope of the claims.

[0109] Conventional needle-flicker devices are prone to accidental firing. To reduce the risk of accidental firing, this disclosure provides a needle-flicker device. This device has a locked state and an unlocked state. In the locked state, firing is restricted. Even if the user attempts to fire the device, it will not fire. In the unlocked state, firing is permitted. In this state, a user's firing action will cause the device to fire, thereby implanting the sensor of the medical device into the user's target tissue.

[0110] According to the needle assist device provided in this disclosure, the user needs to first perform a switching action on the needle assist device, switching it from a locked state where firing is restricted to an unlocked state where firing is allowed, before the user can fire the needle assist device by performing a firing operation. This firing mechanism, which requires performing a switching action before firing, can filter out most unintentional accidental operations, thereby reducing the risk of the needle assist device being accidentally fired.

[0111] The needle assist device according to this disclosure will be described below with reference to specific embodiments and accompanying drawings. For ease of understanding, before introducing the needle assist device according to this disclosure, examples of medical devices to which the needle assist device is applicable will be provided.

[0112] <Example Medical Device> refer to Figure 1This disclosure provides a medical device 10. The medical device 10 may include a device body 11, a sensor 12, and an attachment 13. The device body 11 is used to house devices such as circuit boards (not shown). The sensor 12 may have an elongated structure to be suitable for implantation into a user's target tissue. With the aid of the sensor 12 implanted in the target tissue, the medical device 10 can monitor the user's physiological data indicators. The attachment 13 may be adhesive to attach the device body 11 to the user's skin by adhesion upon contact with the skin.

[0113] Sensor 12 may be flexible. It should be understood that, in this text, the term "flexible" is intended to describe that sensor 204 is relatively soft to be suitable for prolonged placement in tissue, reducing tissue irritation during placement and minimizing user discomfort. Due to its flexibility, sensor 12 is often difficult to insert directly into target tissue on its own and requires implantation with the assistance of a needle applicator.

[0114] In one embodiment, the medical device 10 may be a device for monitoring analytes (e.g., glucose, etc.) in a user's tissue fluid. Conversely, in other embodiments of this disclosure, the medical device 10 may also be used to monitor other physiological data indicators of the user.

[0115] <Example Needle Aid Device> refer to Figure 2 This disclosure provides a needle assist device 100. For ease of understanding, the overall structure of the needle assist device 100 will be described below by way of example. It should be noted that the structure of the needle assist device 100 should not be limited to the following description. For example, one or more elements mentioned below may be omitted or replaced, and their layout relationships may be changed.

[0116] refer to Figure 2 and Figure 3 The needle assist device 100 may include a needle assist device body 101 and a cover 102. The cover 102 is detachably mounted to the proximal end of the needle assist device body 101 to substantially enclose the internal space of the needle assist device body 101, preventing contamination of the internal space by the external environment. In the current embodiment, the medical device 10 forms part of the needle assist device 100 and is housed within the internal space of the needle assist device body 101. Conversely, in other embodiments, the medical device 10 may be an additional component separate from the needle assist device 100 and installed onto the needle assist device 100 before use. Conversely, in other embodiments, the cover 102 may be replaced in other ways, for example, the needle assist device may be placed in a sealed receiving box; in this case, the needle assist device body 101 is the needle assist device 100.

[0117] For ease of description, the directional terms “near” and “far” are used in this document to describe elements such as the needle-assist device body 101 and its components. In this document, during the process of activating the needle-assist device 100 to assist in the implantation of the sensor 12, the end (or side) of an element that is closer to the target tissue is defined as the proximal end (or proximal side), and the end (or side) that is farther from the target tissue is referred to as the distal end (or distal side).

[0118] Using the needle-assist device 100 as a reference, the direction from its distal end to its proximal end is defined as the proximal direction, and the direction from its proximal end to its distal end is defined as the distal direction. In the attached diagram, the proximal direction is indicated by arrow Z-, and the distal direction is indicated by arrow Z+. The proximal and distal directions can be collectively referred to as the proximal-distal direction.

[0119] refer to Figure 4 The needle assist device 100 may include a first operating element 20, a firing mechanism 40, a needle removal mechanism 50, and an implantation needle 60.

[0120] The first actuating element 20 is configured to perform a firing action upon receiving a firing operation. The firing action causes the implantation needle 60 to move proximally to implant the sensor 12 into the target tissue. In the locked state, the firing action of the first actuating element 20 is restricted; in the unlocked state, the firing action of the first actuating element 20 is permitted.

[0121] The first operating element 20 receives and executes a firing operation, thereby moving the implantation needle 60 proximally and implanting the sensor 12 into the target tissue. Furthermore, because the needle assist device is in a locked state, the firing action of the first operating element 20 is restricted, preventing the device from being fired and filtering out most unintentional accidental operations, thus reducing the risk of accidental firing.

[0122] In some embodiments, the firing action of the first operating member 20 can be restricted by a blocking engagement. For example, a blocked portion is provided on the first operating member 20, and the firing action of the first operating member 20 is restricted by the blocking engagement between the blocking member and the blocked portion. In other embodiments, the firing action of the first operating member 20 can also be restricted by a connection, such as by threading the blocking member and the first operating member 20 together. To release the restriction, the threaded engagement between the blocking member and the first operating member 20 must be released first. Alternatively, other connection methods can be used, in which case the connection between the blocking member and the first operating member 20 must be severed to release the restriction.

[0123] The first operating member 20 may be in the shape of a hollow capsule with a proximal opening. The firing mechanism 40, needle removal mechanism 50, and implantation needle 60, etc., may be at least partially housed within the first operating member 20. The first operating member 20 may also be referred to as a handle or a housing. By way of example only, the outer surface of the first operating member 20 may be symmetrically provided with grip portions 21. These grip portions 21 help the user to easily hold the needle aid 100. It should be understood that the first operating member 20 may have a grip portion 21 on one side, or it may not have a grip portion 21.

[0124] The firing mechanism 40 is used to move the implanted needle 60 and the medical device 10 proximally relative to the support 30, so that the implanted needle 60 and the sensor 12 housed within the implanted needle 60 penetrate the user's target tissue. In this document, this action performed by the firing mechanism 40 together with the implanted needle 60 and the medical device 10 is referred to as firing.

[0125] The needle removal mechanism 50 is used to move the implantation needle 60 distally after it is inserted into the tissue, so that the implantation needle 60 is pulled out from the target tissue and the sensor 12 is left in the target tissue.

[0126] The implantation needle 60 may include a needle head 61 and a connecting portion 62. The needle head 61 is used to insert into the target tissue, while the connecting portion 62 is connected to the needle removal mechanism 40. By way of example only, the needle head 61 may be a structure with an opening on one side and a U-shaped cross-section, thereby forming an internal space for accommodating the sensor 12.

[0127] This disclosure does not impose any particular limitations on the firing mechanism 40. As long as the firing mechanism 40 can move proximally with the implantation needle 60 to complete the implantation of the sensor 12 when the needle assist device 100 receives the firing operation, it is acceptable. An exemplary implementation of the firing mechanism 40 is given below.

[0128] refer to Figure 4 The firing mechanism 40 may include a firing seat 41, a carrier 42, and a first energy storage element 43, all three of which are located inside the support member 30. The carrier 42 is fixed to the firing seat 41; for example, the firing seat 41 and the carrier 42 may be integrally formed. Alternatively, for ease of assembly, the firing seat 41 and the carrier 42 may be designed to be detachably connected. The carrier 42 is used to releasably support the medical device 10. The first energy storage element 43 stores potential energy. For example, a user can compress the first energy storage element 43 by pressing the medical device 10 to store potential energy. Subsequently, the needle assist device 100 receives a firing operation, causing the first energy storage element 43 to release its potential energy. Driven by this potential energy, the firing seat 41, carrying the carrier 42 and the medical device 10, moves proximally, thereby firing the needle assist device 100.

[0129] refer to Figure 11 , Figure 12 and Figure 13 The inner side of the first operating member 20 may be provided with a protruding first abutment 22, the firing seat 41 may be provided with a second abutment 411, the support member 30 may be provided with a spring arm 31 extending in the proximal direction, and the free end of the spring arm 31 may be formed with a positioning part 32.

[0130] Combination Figure 7 and Figure 8 The positioning part 32 has a first working surface 321, and the second abutting part 411 has a second working surface 412. The two abut against each other through the first working surface 321 and the second working surface 412. Both the first working surface 321 and the second working surface 412 are sloping surfaces extending radially inward along the proximal direction. The first energy storage member 43 applies a force to the firing base 41 in the proximal direction. Since the two working surfaces 321 and 412 are sloping surfaces with the above-described structure, the force generated by this action, perpendicular to the two working surfaces 321 and 412, gives the spring arm 31 a tendency to deform radially outward.

[0131] Before firing, such as Figure 7 As shown, the first operating member 20 is positioned relative to the support member 30 in a near-far direction. At this time, the first abutment part 22, by abutting against the positioning part 32, restricts the elastic deformation of the spring arm 31 in a radially outward direction, and holds the positioning part 32 in abutting against the second abutment part 411. Through the downward pressing of the first energy storage member 43 and its abutment against the positioning part 32, the firing seat 41 will be positioned relative to the support member 30 in a near-far direction, so that the first energy storage member 43 retains energy storage.

[0132] After receiving the firing operation, the first operating member 20 moves towards the support member 30 in a proximal direction. Figure 7 Move the first position in the middle to Figure 8 The second position in the text. At this point, as... Figure 8 As shown, the positioning part 32 disengages from the first abutment part 22, allowing the spring arm 31 to disengage radially from its restraint. The elastic deformation of the spring arm 31 radially outward causes the positioning part 32 to disengage from the second abutment part 411, thereby releasing the positioning of the firing base 41 in the proximal direction, allowing the first energy storage element 43 to release its potential energy and drive the firing base 41 in the proximal direction. Figure 8 Move the position to Figure 9 The position is set to fire the needle assist device 100.

[0133] The first energy storage element 43 can be an elastic element, which stores potential energy through elastic deformation and releases potential energy by restoring its original shape. In a specific example, the first energy storage element 43 can be a compression spring, with its distal end pressing against the first operating element 20 and its proximal end pressing against the firing seat 41. To prevent the first operating element 20 from separating from the support element 30, in a more specific example, refer to... Figure 12 The support member 30 is also provided with a first claw 33. The first claw 33 restricts the first operating member 20 from moving relative to the support member 30 from the first position to the distal direction by abutting against the top of the first abutting part 22, thereby keeping the first energy storage member 43 in a compressed state when the first operating member 20 is in the first position. It should be understood that the compressed state can be a semi-compressed state or a fully compressed state.

[0134] It is understood that the first energy storage element 43 is not limited to an elastic element. In a prospective example, the first energy storage element 43 may also include two magnetic elements with opposite magnetic poles, one of which may be fixed to the first operating element 20 and the other magnetic element may be fixed to the firing base 41.

[0135] This disclosure does not impose any particular limitations on the needle removal mechanism 50. It is sufficient that the implantation needle 60 can be quickly removed from the target tissue after the needle assist device 100 is fired. An exemplary implementation of the needle removal mechanism 50 is given below.

[0136] refer to Figure 4 and Figure 14 The needle removal mechanism 50 may include a needle removal component 51 and a second energy storage component 52. The needle removal component 51 is connected to the implanted needle 60. The second energy storage component 52 stores potential energy. After the needle assist device 100 is fired, the potential energy of the second energy storage component 52 is released. Driven by this potential energy, the needle removal component 51 moves distally with the implanted needle 60, thereby removing the implanted needle 60 from the target tissue.

[0137] refer to Figure 11 and Figure 13 The first operating member 20 may have a cylindrical portion 23, and the firing seat 41 may have a second pawl 413. The second pawl 413 has a third operating surface 414, which is a ramp surface that slopes radially outward along the proximal direction. (Reference) Figure 14 The distal end of the needle-pulling component 51 is provided with a fourth working surface 511, which is also a sloping surface inclined radially outward along the proximal direction. The second energy storage component 52 applies a force to the needle-pulling component 51 in the distal direction. Since the two working surfaces 414 and 511 are sloping surfaces with the above-described structure, the force is applied to the second claw 413 through the abutment of the two working surfaces 414 and 511, resulting in an elastic deformation force in the radially outward direction. It should be understood that the embodiments of the present invention are not limited to both working surfaces 414 and 511 being sloping surfaces, as long as they can be separated under the action of force. For example, one of them can be a sloping surface and the other can be an arc surface.

[0138] like Figure 7 and Figure 8As shown, before the needle assist device 100 fires, the second pawl 413 is located inside the cylindrical portion 23. At this time, the cylindrical portion 23 binds the second pawl 413, restricting its radial outward deformation and holding it in a position abutting against the first needle extraction member 51. Through this abutment against the second pawl 413, the distal movement of the needle extraction member 51 is restricted, allowing the second energy storage member 52 to retain its energy.

[0139] like Figure 9 As shown, as the needle assist device 100 is fired, the firing seat 41 moves proximally, and the second claw 413 disengages from the cylindrical portion 23. Freed from the constraint of the cylindrical portion 23, the second claw 413 is able to open or deform radially outward. Under the action of the second energy storage device 52, the needle removal device 51 causes the second claw 413 to open radially outward, thus disengaging from the second claw 413 and releasing the restriction on the distal movement of the needle removal device 51. This allows the second energy storage device 52 to release potential energy and drive the needle removal device 51 distally. Figure 9 Move the position in the middle to Figure 10 The position is such that the implanted needle 60 can be pulled out from the target tissue.

[0140] The second energy storage element 52 can be an elastic element, which accumulates potential energy through elastic deformation and releases potential energy by restoring the elastic element to its original state. In a specific example, the second energy storage element 52 can be a compression spring, with its distal end pressing against the pin-pulling element 51 and its proximal end pressing against the firing seat 41 or the bearing element 42.

[0141] It is understood that the second energy storage element 52 is not limited to an elastic element. In a prospective example, the second energy storage element 52 may also include two magnetic elements with opposite magnetic poles, one of which may be fixed to the pin-pulling element 51, and the other magnetic element may be fixed to the firing base 41 or the carrier element 42.

[0142] In this disclosure, to restrict the first operating member 20 from performing the firing action, the needle assist device 100 further includes a blocking member 71. The first operating member 20 includes a blocked portion 24. In the locked state, the blocking member 71 is located on the movement path of the blocked portion 24. In the unlocked state, the blocking member 71 is located outside the movement path. By using the blocking member 71 and the blocked portion 24 to block and cooperate, the firing action of the first operating member 20 is restricted. This method has the advantages of simple structure and ease of implementation.

[0143] In some embodiments, the blocking member 71 and the blocked portion 24 abut against each other in the near-far direction, such that the blocking member 71 blocks the first operating member 20 in its movement path. In other embodiments, the blocking member 71 and the blocked portion 24 have a certain distance in the near-far direction. In this case, although the first operating member 20 can move in the near-far direction, the distance that the first operating member 20 moves is less than the distance that the first operating member 20 moves when triggered, but its firing action is still restricted.

[0144] like Figures 4 to 6 As shown, the needle assist device 100 also includes a second operating member 70, which is configured to perform a switching action upon receiving a switching operation to switch the needle assist device 100 from a locked state to an unlocked state. The switching action causes relative movement between the blocking member 71 and the blocked portion 24, causing the blocking member 71 to move out of its movement path. The switching operation of the needle assist device is received by the second operating member, while the firing operation is received by the first operating member. Because different operations are received by different operating members, the risk of the needle assist device being accidentally fired by the user is reduced.

[0145] In some embodiments, the switching action causes the blocking member 71 to move; that is, the second operating member 70 moves the blocking member 71, causing the blocking member 71 to leave the movement path. In other embodiments, the switching action causes the blocked part 24 to move, causing the blocking member 71 to leave the movement path. The switching action is only necessary if it allows the blocking member 71 and the blocked part 24 to avoid each other.

[0146] like Figure 5 and Figure 6 As shown, the blocking member 71 is fixed to or formed in the second operating member 70 so as to move with the second operating member 70 when the second operating member 70 performs a switching action. The above structure simplifies the structure of the needle assist device 100 and facilitates operation.

[0147] like Figure 5 and Figure 6 As shown, when the first operating member 20 performs the firing action, it moves along the proximal direction, and when the second operating member 70 performs the switching action, it rotates about the axis S extending along the proximal direction. In the locked state, the blocking member 71 is aligned with the blocked part 24 along the proximal direction. In the unlocked state, the blocked part 24 is offset from the blocking member 71 along the proximal direction. By rotating the second operating member 70 about the axis S extending along the proximal direction, the firing action of the first operating member 20 is allowed, and then the first operating member 20 moves along the proximal direction to perform the firing action.

[0148] Wherein, the blocking member 71 and the blocked portion 24 are aligned in the proximal direction, meaning that in a projection plane perpendicular to the axis S extending in the proximal direction, the orthographic projections of the blocking member 71 and the blocked portion 24 at least partially overlap. The blocked portion 24 and the blocking member 71 are offset in the proximal direction, meaning that in a projection plane perpendicular to the axis S extending in the proximal direction, the orthographic projections of the blocking member 71 and the blocked portion 24 do not overlap at all.

[0149] Combination Figure 6 As the second operating member 70 rotates relative to the support member 30 in the switching direction, i.e. the Y direction in the figure, the blocked part 24 and the blocking member 71 are offset in the proximal direction, thereby switching the needle aid 100 from the locked state to the unlocked state.

[0150] like Figures 7 to 10 As shown, the needle assist device 100 also includes a support member 30, and the second operating member 70 is cylindrical and sleeved on the support member 30 so as to be rotatably supported by the support member 30 about axis S. By sleeved on the support member 30, the second operating member 70 can be supported by the support member 30.

[0151] Specifically, the firing operation can apply a proximal force to the first operating member 20, causing the first operating member 20 to move proximally relative to the support member 30, thereby firing the needle assist device 100. By way of example, during implantation, the user can place the proximal end of the needle assist device 100 against the target tissue and then press the first operating member 20 proximally to perform the firing operation.

[0152] By way of example only, the support member 30 may be generally cylindrical or at least partially cylindrical.

[0153] like Figure 7 and Figure 8 As shown, the first operating element 20 is fitted onto the support element 30 and is movably supported by the support element 30 in the proximal direction. The first operating element 20 and the second operating element 70 are arranged sequentially in the proximal direction. As the first operating element 20 performs a firing action, the second operating element 70 at least partially enters the space between the first operating element 20 and the support element 30. The structure of the above-described needle aid 100, after the first operating element 20 performs a firing action, fully utilizes the space extending in the proximal direction by allowing at least a portion of the second operating element 70 to enter the space between the first operating element 20 and the support element 30. Furthermore, the switching operation of the needle aid is received by the second operating element, while the firing operation is received by the first operating element. Since different operations are received by different operating elements, the risk of the needle aid being accidentally fired by the user is reduced.

[0154] Before the first operating element 20 fires, the first operating element 20 and the second operating element 70 are arranged sequentially along the proximal direction. At this time, the first operating element 20 and the second operating element 70 are allowed to partially overlap along the proximal direction, or they may not overlap at all. After the first operating element 20 fires, the first operating element 20 and the second operating element 70 overlap along the proximal direction.

[0155] like Figure 5 As shown, the blocking member 71 is a blocking protrusion extending in the direction surrounding the axis S. The blocked portion 24 is a blocked protrusion extending in the proximal direction.

[0156] like Figure 8 As shown, in the proximal direction, the proximal end of the second operating member 70 is flush with or extends beyond the proximal end of the support member 30. This structure ensures that the support member 30 is not exposed, and the second operating member 70 can shield the support member 30. Because the support member 30 is not exposed, the appearance of the needle-aid device is more harmonious and uncomplicated, and the user will only come into contact with the second operating member 70, without interference from the support member 30. Furthermore, the second operating member 70 can cover the support member 30 at its base, ensuring that only the second operating member 70 comes into contact with the user's skin, preventing gaps or misalignment between the two components that could cause skin compression and redness.

[0157] like Figure 8 and Figure 15 As shown, the second operating member 70 includes a body portion 72 and a flange portion 73. The body portion 72 surrounds the support member 30, and the flange portion 73 protrudes radially inward from the proximal end of the body portion 72 to cover the proximal end of the support member 30. By providing the flange portion 73, when the needle assist device 100 contacts the patient's skin, the flange portion 73 can be used to contact the patient, preventing the patient's skin from entering the gap between the support member 30 and the body portion 72 due to the absence of the flange portion 73, thus avoiding pain for the patient and improving the patient's user experience.

[0158] In other embodiments, the second operating member 70 may not have a flange 73, that is, the proximal end of the body portion 72 may not protrude radially inward; in this case, the proximal end of the body portion 72 may be flush with the proximal end of the support member 30, or the proximal end of the body portion 72 may be slightly shorter than the proximal end of the support member 30.

[0159] like Figure 12 and Figure 15As shown, the top of the second operating member 70 is provided with a positioning notch 74. The positioning notch 74 has a first positioning edge and a second positioning edge opposite each other in the direction around the axis S. The outer periphery of the support member 30 is provided with a positioning protrusion 35, which is located in the positioning notch 74. As the second operating member 70 performs a switching action, the positioning protrusion 35 moves from a position abutting against the first positioning edge to a position abutting against the second positioning edge. Through the positioning engagement of the positioning protrusion 35 with the first positioning edge and the second positioning edge of the positioning notch 74 respectively, the second operating member 70 can only rotate within the space defined by the first positioning edge and the second positioning edge, ensuring that the second operating member 70 rotates to the preset unlocking position.

[0160] like Figure 12 and Figure 15 As shown, one of the outer periphery of the support member 30 and the inner periphery of the second operating member 70 is provided with a positioning protrusion 34 and the other with a positioning slot 75. Both the positioning slot 75 and the positioning protrusion 34 extend in the direction surrounding the axis S, and the positioning slot 75 receives the positioning protrusion 34. By using the cooperation of the positioning protrusion 34 and the positioning slot 75, the second operating member 70 can be assembled onto the support member 30, so that the second operating member 70 will not fall off when rotating around the axis S of the support member 30.

[0161] The above description illustrates an example of a needle assist device 100 according to an embodiment of the present disclosure. Below, examples of modified needle assist devices according to the present disclosure will be described. It will be understood that the needle assist devices in the following modifications share many similar or identical elements with the needle assist device 100 described above. For the sake of brevity, similar or identical elements will be omitted by using similar or identical reference numerals.

[0162] <Modification of the needle assist device 1> According to the modified example 1 of this disclosure, the needle aid weighs 100g, such as Figure 16 and Figure 18 As shown, the second operating element is constructed as a push button 70g, which is attached to the support member 30g and is rotatably supported by the support member 30g about axis S. The first operating element 20g is allowed to fire by moving the push button 70g relative to the support member 30g.

[0163] like Figures 16 to 19As shown, the push button 70g includes a button body 71g and a locking portion 72g. The support member 30g includes a groove 31g extending in the direction surrounding axis S and partially penetrating the support member 30g radially. The button body 71g is located on the outside of the support member 30g. The locking portion 72g passes through the groove 31g and engages with the support member 30g, and the locking portion 72g can slide along the groove 31g. By engaging the button body 71g with the support member 30g through the locking portion 72g, the button body 71g is mounted on the support member 30g. In this way, the original size of the aid is not increased while achieving the unlocking purpose.

[0164] In Modification 1, the knob body 71g serves both to receive user input for rotation and as a blocking element. When the firing action of the first operating member 20g is restricted, the knob body 71g and the blocked portion 24g of the first operating member 20g are aligned in the S-axis direction to limit the first operating member 20g from moving proximally relative to the support member 30g. When the user rotates the push button to allow the first operating member 20g to fire, the knob body 71g and the blocked portion 24g of the first operating member 20g are misaligned in the S-axis direction, thereby allowing the first operating member 20g to move proximally relative to the support member 30g to the position that causes the needle assist device to fire.

[0165] <Modification 2 of the needle assist device> According to the needle assist device 100j of Modification 2 of this disclosure, such as Figure 20 and Figure 22 As shown, the second operating element 70j is attached to the support element 30j, and the switching action is performed by removing the second operating element 70j from the support element 30j. By removing the second operating element 70j from the support element 30j, the needle assist device can be switched from a locked state where firing is restricted to an unlocked state where firing is allowed.

[0166] In Modification 2, the second operating member 70j includes a clamping part 76j and a blocking member 71j. The blocking member 71j is disposed on the clamping part 76j and moves with the clamping part 76j.

[0167] like Figure 21 and Figure 22 As shown, the support member 30j includes a clamped portion 38j, and a clamping portion 76j for clamping the clamped portion 38j to attach the second operating member 70j to the support member 30j. Through the cooperation of the clamping portion 76j and the clamped portion 38j, the second operating member 70j is attached to the support member 30j, facilitating operation of the second operating member 70j and allowing it to be separated from the support member 30j.

[0168] Specifically, when the second operating member 70j disengages from the support member 30j, the clamping part 76j and the clamped part 38j can undergo relative deformation to release the restrictive effect between the second operating member 70j and the support member 30j. The clamping part 76j can be deformed, the clamped part 38j can be deformed, or both can be deformed.

[0169] like Figures 20 to 23 As shown, the first operating member 20j is sleeved on the support member 30j and is movably supported by the support member 30j in the proximal direction. The blocked portion 24j is located on the inner periphery of the first operating member 20j. The clamping portion 76j includes an outer clamping arm 761j and an inner clamping arm 762j located on the inner and outer sides of the support member 30j, respectively. The distal end of the outer clamping arm 761j has an outwardly protruding blocking member 71j and an inwardly protruding pressure-bearing portion 763j. In the locked state, the blocking member 71j and the blocked portion 24j are arranged opposite each other in the proximal direction, and the pressure-bearing portion 763j abuts against the distal end of the clamped portion 38j. The second operating member 70j can be snapped or fixed onto the support member 30j by the cooperation of the pressure-bearing portion 763j and the clamped portion 38j, or by the interference fit between the clamping portion 76j and the clamped portion 38j (i.e., without the need for the pressure-bearing portion 763j). By cooperating with the blocking member 71j and the blocked part 24j, the second operating member 70j can limit the first operating member 20j, thus restricting the firing action of the first operating member 20j. By removing the second operating member 70j from the support member 30j, the limiting effect on the first operating member 20j can be released, allowing the first operating member 20j to move in the proximal direction, and the firing action is permitted.

[0170] In the locked state, there is a certain gap between the blocking member 71j and the blocked part 24j, and the two can move relatively a small distance, but not enough to cause the first operating member 20j to fire.

[0171] like Figure 20 and Figure 23 As shown, the first operating member 20j also includes a limiting part 25j. When the blocked part 24j and the blocking member 71j abut against each other, the limiting part 25j is located outside the blocked part 24j to limit the outward deformation of the outer clamping arm 762j. Through the abutting cooperation between the blocking member 71j and the blocked part 24j, the outward deformation of the clamping arm can be avoided, so that the second operating member 70j will not detach from the support member 30j, thereby preventing the firing action of the first operating member 20j of the needle aid from being executed, thus enhancing the reliability of the product.

[0172] <Modification 3 of the needle assist device> According to the needle assist device 100 of Modification 3 of this disclosure, the first operating member 20h moves in the proximal direction when performing the firing action, and the second operating member 70h moves in the proximal direction when performing the switching action. Since the first operating member 20h and the second operating member 70h have the same direction of movement, the user does not need to distinguish the direction to complete the firing of the needle assist device, which is convenient for operation.

[0173] Since the first operating element 20h and the second operating element 70h have the same direction of movement, in order for the firing action of the first operating element 20h to be executed smoothly, the moving distance of the second operating element 70h should be greater than the moving distance of the first operating element 20h.

[0174] <Modification 4 of the needle assist device> According to the needle assist device 100 of Modification 4 of this disclosure, such as Figures 24 to 27 As shown, in the initial state, the blocking member 37 is located on the blocking path, preventing the support member 30h from performing the firing action. The second operating member 70h performs a switching action, driving the blocking member 37h to leave the movement path of the second operating member 20h. By operating the second operating member 70h to drive the blocking member 37h to move, the firing action of the first operating member 20h is allowed, facilitating operation.

[0175] like Figure 24 and Figure 25 As shown, the support member 30h is provided with a spring arm 36h, and a blocking member 37h is provided on the spring arm 36h. The second operating member 70h performs a switching action, causing the spring arm 36h to elastically deform, thereby driving the blocking member 37h to leave the moving path. The movement of the second operating member 70h deforms the spring arm 36h, thereby moving the blocking member 37h.

[0176] like Figure 24 , Figure 25 and Figure 27 The first operating member 20h is sleeved on the support member 30h and is movably supported by the support member 30h in the proximal direction. The blocked portion 24h is located on the inner circumference of the first operating member 20h and protrudes inward, while the blocking member 37h protrudes outward. When the first operating member 20h performs a firing action, it moves proximally relative to the support member 30h. The second operating member 70h is at least partially located between the first operating member 20h and the support member 30h, and when the second operating member 70h performs a switching action, it moves distally to cause the spring arm 36h to elastically deform inward by compressing the blocking member 37h. By moving distally, the second operating member 70h compresses the blocking member 37h, causing the spring arm 36h to elastically deform inward, thereby causing the blocking member 37h on the spring arm 36h to disengage from the blocking portion 24h in the proximal direction and leave the movement path of the first operating member 70h, thus allowing the firing action of the first operating member 20h to be permitted.

[0177] In this configuration, when the needle assist device is locked, the blocking member 37h and the blocked part 24h engage in a blocking action in the proximal direction. To facilitate the deformation of the spring arm 36h after the blocking member 37h is compressed, the blocking member 37h and the blocked part 24h have a movement interval in the proximal direction. This movement interval is set insufficient to allow the first operating member 70h to complete the firing action. In other words, even if the first operating member 70h moves this interval distance in the proximal direction, it will not trigger the needle assist device.

[0178] like Figure 24 , Figure 25 and Figure 27 As shown, the inner circumference of the first operating member 20h is provided with a first slot 27h and a second slot 28h arranged sequentially in the distal direction. The second operating member 70h is provided with an engaging protrusion 75h. In the locked state, the engaging protrusion 75h engages with the first slot 27h to restrict the movement of the second operating member 70h in the distal direction. When the user presses the second operating member 70h to move distally and squeezes the blocking member 37h, the needle aid is unlocked. In the unlocked state, the engaging protrusion 75h engages with the second slot 28h to restrict the movement of the second operating member 70h in the proximal direction, and the engaging protrusion 75h abuts against the outside of the blocking member 37h to keep the blocking member 37h outside the movement path. The first slot 27h and the second slot 28h can limit the second operating member 70h on the first operating member 20h, preventing the second operating member 70h from falling off. Furthermore, the second slot 28h prevents the second operating element 70h from moving proximally, thus preventing the needle assist device from switching from the unlocked to the locked state. Additionally, when the second operating element 70h is pressed down, there is a visible height difference between the end of the second operating element 70h and the end of the support element 30h, and an audible alert is generated when the device is pressed to its lowest pressable position to remind the patient to use the needle assist device and prevent it from malfunctioning due to external contamination.

[0179] <Example 5 of the needle-aid device> According to the needle assist device 100 of Modification 5 of this disclosure, such as Figure 28As shown, a first operating member 20i is sleeved on a support member 30i and is movably supported by the support member 30i in a proximal direction. When the first operating member 20i performs a firing action, it moves proximally relative to the support member 30i. A second operating member 70i is at least partially located between the first operating member 20i and the support member 30i. When the second operating member 70i performs a switching action, it moves proximally. A blocked portion 24i is located on the inner periphery of the first operating member 20i, a ball seat 36i is provided on the outer periphery of the support member 30i, and a blocking member 37i is a blocking ball. In the locked state, the blocking ball is held by the ball seat 36i and positioned on the movement path of the blocked portion 24i. As the second operating member 70i moves distally, it pushes the blocking ball away from the ball seat 36i, thus leaving the movement path of the blocked portion 24i. The ball seat 36i holds the blocking ball, and the cooperation between the ball seat 36i and the blocking ball blocks the first operating member 20i. By pushing the blocking ball away from the ball seat 36i by the second operating member 70i, the blocked part 24i can be avoided, so that the first operating member 20i can be fired.

[0180] <Example 6 of the needle assist device> According to the needle assist device 100 of Modification 6 of this disclosure, such as Figure 29 and Figure 30 As shown, the first operating member 20k is also configured to perform a switching action when receiving a switching operation. The switching action causes the blocked part 24k to move relative to the blocking member 37k, so that the blocking member 37k leaves the movement path of the blocked part 24k. Since the first operating member 20k can receive both firing and switching operations, the user only needs to operate the first operating member 20k to complete the needle assisting action of the needle assist device, which has the advantage of being easy to operate.

[0181] To facilitate user differentiation, the switching action and firing action of the first operating element 20k should be different operations. For example, the switching action of the first operating element 20k is a rotation operation, and the firing action of the first operating element 20k is a pressing operation.

[0182] In Modification 6, since the first operating member 20k can perform both switching and firing actions, there is no need to set up a second operating member, which simplifies the structure of the needle assist device and reduces manufacturing costs.

[0183] like Figure 29 and Figure 30As shown, when the first operating member 20k performs the firing action, it moves along the proximal direction; when the first operating member 20k performs the switching action, it rotates about an axis extending along the proximal direction. In the locked state, the blocking member 37k and the blocked part 24k are positioned opposite each other along the proximal direction to prevent the first operating member 20k from moving proximally. In the unlocked state, the blocked part 24k and the blocking member 37k are completely misaligned along the proximal direction. The needle aid is unlocked by rotating the first operating member 20k, which has the advantages of simple structure and easy operation.

[0184] like Figures 30 to 33 As shown, the first operating member 20k is operably sleeved on the support member 30k, and is supported by the support member 30k so as to be movable in the proximal direction and rotatable about an axis. The blocking member 37k is located on the outer periphery of the support member 30k, and the blocked portion 24k is located on the inner periphery of the first operating member 20k, or the blocking member 37k is located on the inner periphery of the support member 30k, and the blocked portion 24k is located on the outer periphery of the first operating member 20k. Through the relative rotation of the first operating member 20k and the support member 30k, the blocked portion 24k and the blocking member 37k are completely misaligned in the proximal direction, thereby allowing the firing action of the first operating member 20k to be permitted. Through the relative movement of the first operating member 20k and the support member 30k, the switching action of the first operating member 20k can be performed to achieve unlocking, making the structure of the needle assist device simple and facilitating its miniaturization.

[0185] In some embodiments, the blocking member 37k may be a protrusion extending in a proximal direction, and the blocked portion 24k may be a protrusion extending about an axis. In other embodiments, the blocking member 37k may be an opening groove, and the blocked portion 24k may be a protrusion. Conversely, as an alternative embodiment, the blocked portion 24k may be an opening groove, and the blocking member 37k may be a protrusion.

[0186] <Modification of the needle assist device 7> According to the needle assist device 100 of Modification 7 of this disclosure, such as Figure 34 and Figure 35 As shown, the first operating member 20m has a blocked portion 24m, and the blocking member 37m is located on the movement path of the blocked portion 24m. In the locked state, the blocking member 37m is restricted from leaving the movement path of the blocking portion 24m, thereby restricting the first operating member 20m from performing a firing action by blocking the blocked portion 24m. In the unlocked state, the blocking member 37m is allowed to leave the movement path, and the blocked portion 24m can squeeze the blocking member 37m to make it leave the movement path, thereby allowing the first operating member 20m to perform a firing action. By squeezing the blocked portion 24m with the blocking member 37m, the firing action of the first operating member 20m is changed from being restricted to being allowed, thereby switching the needle assist device from the locked state to the unlocked state.

[0187] In the locked state, the blocking member 37m is restricted by an external structure, preventing it from moving and thus limiting its movement. When the needle assist device needs to be used, the restriction on the blocking member 37m is lifted by this external structure, allowing it to move and thus enabling the firing action of the first operating member 20m. This restriction on the blocking member 37m can be achieved by adding an external component, such as a second operating member 70m, which releases the restriction on the blocking member 37m. Alternatively, the blocking member 37m can be restricted by applying pressure, which can be achieved through pneumatic or hydraulic pressure. Reducing the pressure releases the restriction on the blocking member 37m.

[0188] like Figures 34 to 37 As shown, the second operating member 70m is configured to perform a switching action upon receiving a switching action, thereby switching the needle assist device from a locked state to an unlocked state. In the locked state, the second operating member 70m cooperates with the blocking member 37m to prevent the blocking member 37m from leaving the movement path. In the unlocked state, the second operating member 70m separates from the blocking member 37m, allowing the blocking member 37m to be squeezed out of the movement path by the blocked part 24m. By receiving the switching action, the second operating member 70m switches from restricting the blocking member 37m to separating from the blocking member 37m, thereby allowing the blocking member 37m to be squeezed and moved, thus enabling the needle assist action of the needle assist device to be performed.

[0189] like Figure 35 and Figure 37 As shown, in the locked state, the second operating member 70m abuts against the blocking member 37m to prevent the blocking member 37m from leaving the movement path. In the unlocked state, the second operating member 70m disengages from the blocking member 37m, allowing the blocking member 37m to be pressed out of the movement path by the blocked part 24m. By having the second operating member 70m abut against the blocking member 37m, the restriction on the blocking member 37m is achieved, offering the advantage of a simple structure.

[0190] In Modification 7, in the locked state, the second operating member 70m abuts against the blocking member 37m, preventing the blocking member 37m from moving radially. The blocking member 37m forms a blocking engagement with the blocked part 24m, preventing the first operating member 20m from performing the firing action. When the second operating member 70m disengages from the blocking member 37m and performs the firing action, the blocked part 24m can press against the blocking member 37m, causing the blocking member 37m to leave its original position and lose its restraining effect on the blocked part 24m.

[0191] In other embodiments, the second operating member 70m can also restrict the blocking member 37m from leaving the movement path through other structures. For example, the second operating member 70m and the blocking member 37m can be connected by a pin, and the pin can be pulled out when it is necessary to release the restriction.

[0192] like Figure 35 and Figure 37 As shown, the support member 30m is provided with a spring arm 36m, and a blocking member 37m is provided on the spring arm 36m. When the blocking member 37m is pressed by the blocked part 24m, the spring arm 36m elastically deforms, causing the blocking member 37m to leave the movement path. The above-mentioned spring arm 36m structure facilitates rapid deformation when pressed by the blocked part 24m, thus losing its limiting function on the blocked part 24m.

[0193] like Figures 34 to 37 As shown, when the first operating member 20m performs the firing action, it moves in the proximal direction. The first operating member 20m is fitted onto the support member 30m and is movably supported by the support member 30m in the proximal direction. The blocking member 37m protrudes outward from the spring arm 36m. The second operating member 70m has a through groove 76m that extends to the distal end of the second operating member 70m to form an opening. The spring arm 36m extends into the through groove 76m through the opening. The blocking member 37m is located outside the second operating member 70m. The through groove 76m includes a narrow groove portion 761m and a wide groove portion 762m in sequence in the proximal direction. The width of the narrow groove portion 761m is smaller than the width of the blocking member 37m, and the width of the wide groove portion 762m is larger than the width of the blocking member 37m. In the locked state, the blocking member 37m is located at the narrow groove portion 761m. In the unlocked state, the blocking member 37m is located at the wide groove portion 762m. The blocking member 37m is located at the narrow groove 761m, and can be blocked by the second operating member 70m, restricting the blocking member 37m from moving inward, thereby restricting the elastic deformation of the spring arm 36m inward. When the blocking member 37m is located at the wide groove 762m, the wide groove 762m can be used to avoid the blocking member 37m, allowing the blocking member 37m to move inward, thereby causing the spring arm 36m to elastically deform inward, avoiding the blocked part 24m.

[0194] In other embodiments, if the movement direction of the second operating member 70m is opposite, the positions of the wide slot 762m and the narrow slot 761m in the near and far directions can be interchanged, which can also achieve the function of restricting and releasing the blocking member 37m.

[0195] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A needle-aiding device, characterized in that, Implanting sensors into target tissue via firing includes: Support components; The first operating element is movable relative to the support element in the near and far directions; The firing mechanism is located inside the first operating member. The first operating member moves proximally relative to the support member, which can trigger the firing mechanism to move proximally and drive the sensor to be implanted into the target tissue. The needle aid also has a locked state in which the firing mechanism cannot be triggered, and in the locked state, the relative movement between the first operating member and the support member is restricted; the needle aid also has an unlocked state in which the firing mechanism can be triggered, and in the unlocked state, the support member and the first operating member can move relative to each other.

2. The needle-aiding device according to claim 1, characterized in that, It also includes a blocking mechanism configured to restrict the relative movement between the first operating member and the support member in the locked state; The blocking mechanism includes a blocking member and a blocked part. In the locked state, the blocking member is located on the movement path of the blocked part, and in the unlocked state, the blocking member is located outside the movement path of the blocked part.

3. The needle-aiding device according to claim 2, characterized in that, It also includes a second operating element configured to perform a switching action when a switching action is received, so as to switch the needle aid from the locked state to the unlocked state; the switching action causes relative movement between the blocking member and the blocked part, so that the blocking member leaves the movement path of the blocked part.

4. The needle-aiding device according to claim 3, characterized in that, The blocked portion is fixed or formed on the first operating member or the second operating member; the blocking member is fixed or formed on the second operating member or the first operating member.

5. The needle-aid device according to claim 4, characterized in that, The second operating element is sleeved on the support member, and the first operating element and the second operating element are arranged sequentially along the proximal direction; as the first operating element performs the firing action, the second operating element at least partially enters the space between the first operating element and the support member.

6. The needle-aiding device according to claim 3, characterized in that, In the proximal direction, the proximal end of the second actuating member is flush with or extends beyond the proximal end of the support member.

7. The needle-aiding device according to claim 5, characterized in that, The second operating element includes a body portion surrounding the support member.

8. The needle-aiding device according to claim 5, characterized in that, The second operating member or the support member is provided with a positioning notch, the positioning notch having a first positioning edge and a second positioning edge opposite each other in the direction around the axis, and the support member or the second operating member is provided with a positioning protrusion, the positioning protrusion being located in the positioning notch; as the second operating member performs the switching action, the positioning protrusion moves from a position abutting against the first positioning edge to a position abutting against the second positioning edge.

9. The needle-aiding device according to claim 4, characterized in that, The second operating element is constructed as a push button, and is arranged around a portion of the support member so as to be rotatably supported by the support member about an axis.

10. The needle-aiding device according to claim 9, characterized in that, The push button includes a button body and a locking portion. The support includes a groove extending in a direction about the axis and penetrating the support radially. The button body is located outside the support. The locking portion passes through the groove and engages with the support. The locking portion is slidable along the groove.

11. The needle-aiding device according to claim 3, characterized in that, The second operating element is attached to the support member, and the second operating element is removed from the support member by performing the switching action.

12. The needle-aid device according to claim 11, characterized in that, The second operating member includes a clamping portion, and the support member includes a clamped portion, the clamping portion clamping the clamped portion to attach the second operating member to the support member.

13. The needle-aid device according to claim 12, characterized in that, The blocked portion is located on the inner periphery of the first operating member. The clamping portion includes an inner clamping arm and an outer clamping arm located on the inner and outer sides of the support member, respectively. The distal end of the outer clamping arm is provided with a blocking member protruding outward and a pressure-bearing portion protruding inward. In the locked state, the blocking member and the blocked portion are opposite each other in the proximal direction, and the pressure-bearing portion abuts against the distal end of the clamped portion.

14. The needle-aid device according to claim 13, characterized in that, The first operating member includes a limiting part; when the blocked part and the blocking member abut against each other, the limiting part is located outside the blocked part and abuts against the blocked part to limit the outward deformation of the outer clamping arm.

15. The needle-aiding device according to claim 4, characterized in that, The support member is provided with a spring arm, and the blocking member is provided on the spring arm. The second operating member performs the switching action to cause the spring arm to elastically deform, thereby driving the blocking member to leave the movement path.

16. The needle-aiding device according to claim 15, characterized in that, The blocked portion is located on the inner periphery of the first operating member and protrudes inward, while the blocking member protrudes outward; the second operating member is at least partially located between the first operating member and the support member, and when the second operating member performs the switching action, it moves in a distal direction to cause the spring arm to elastically deform inward by squeezing the blocking member.

17. The needle-aid device according to claim 16, characterized in that, The inner periphery of the first operating member is provided with a first slot and a second slot arranged sequentially along the distal direction, and the second operating member is provided with an engaging protrusion; in the locked state, the engaging protrusion engages with the first slot to restrict the second operating member from moving in the proximal direction; in the unlocked state, the engaging protrusion engages with the second slot to restrict the second operating member from moving in the proximal direction, and the engaging protrusion abuts against the outside of the blocking member to keep the blocking member outside the movement path.

18. The needle-aiding device according to claim 2, characterized in that, The first operating member is further configured to perform a switching action when receiving a switching action, the switching action causing the blocked part to move relative to the blocking member so that the blocking member leaves the movement path.

19. The needle-aid device according to claim 18, characterized in that, When the first operating member performs the firing action, it moves along the proximal direction; when the first operating member performs the switching action, it rotates about an axis extending along the proximal direction. In the locked state, the blocking member is aligned with the blocked portion along the proximal direction; In the unlocked state, the blocked portion and the blocking member are offset along the proximal direction.

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