Piercing assembly and applicator

Abstract

The utility model provides a kind of puncture assembly and exerting device, and puncture assembly provides puncture path for sensor, and puncture assembly includes needle seat, sharp component and connecting structure, and needle seat and sharp component are connected by connecting structure, and connecting structure includes first component and second component, and first component includes a pair of symmetrical first connecting part and a pair of symmetrical second connecting part, and a pair of first connecting part and a pair of second connecting part are arranged in cross, and second component includes a pair of first accommodating portion corresponding with a pair of first connecting part and a pair of second accommodating portion corresponding with a pair of second connecting part, and first connecting part has guide inclined plane, and first accommodating portion has pivotable clamping arm, and clamping arm has protrusion.According to the utility model, a kind of puncture assembly and exerting device with high reliability can effectively reduce the unexpected shaking between sharp component and needle seat.

Description

Technical Field

[0001] This utility model relates to the field of biomedical engineering industry, specifically to a puncture component and an application device. Background Technology

[0002] An analyte monitoring device is a device used to continuously monitor the levels of physiological parameters in the human body. It typically includes a sensor that is at least partially implanted in the host. The implantation of the sensor usually requires the assistance of an implantation device with a sharp part (such as a guide needle). The sharp part can provide a puncture path for the sensor and carry it percutaneously into the subcutaneous tissue to achieve continuous monitoring.

[0003] To ensure proper assembly of the sharp component and sensor, and to facilitate sterilization, the typical assembly process involves first assembling the sharp component and sensor together, and then fitting this assembly into the housing of the implantation aid. The implantation aid usually includes a needle holder for receiving and securing the sharp component. The mating structure between the needle holder and the sharp component ensures reliable retention, thereby providing support and guidance for the sensor during implantation. In existing technologies, common needle holder structures are often three-pronged snap-fit ​​structures or aircraft nose-like locking mechanisms.

[0004] However, while these structures can achieve basic pickup and fixation of sharp parts, they may cause the connection between the sharp part and the needle hub to be unstable after the sharp part is picked up. This instability usually manifests as slight radial or axial wobbling of the sharp part within the needle hub, leading to a decrease in implantation accuracy and affecting the accuracy of the monitoring device. Summary of the Invention

[0005] This invention is proposed in view of the above-mentioned state of the prior art, and its purpose is to provide a highly reliable puncture assembly and application device that can effectively reduce unwanted wobbling between the sharp part and the needle seat.

[0006] Therefore, a first aspect of this utility model provides a puncture assembly for applying the implantation portion of a sensor to the subcutaneous tissue of a host. The puncture assembly provides a puncture path for the sensor. The puncture assembly includes a needle hub, a sharp component, and a connecting structure. The needle hub and the sharp component are connected via the connecting structure. The connecting structure includes a first component and a second component, one of which is disposed at one end of the needle hub, and the other at one end of the sharp component. The first component includes a pair of symmetrical first connecting portions and a pair of symmetrical second connecting portions, which are arranged intersectingly. The second component includes a pair of first receiving portions corresponding to the pair of first connecting portions, and a receiving portion corresponding to the pair of first connecting portions. A pair of second receiving portions corresponding to the second connecting portion, the first connecting portion having a guide ramp, the first receiving portion having a pivotable retaining arm, the retaining arm having a protrusion, during the relative movement of the needle seat and the sharp component along the assembly direction approaching each other, the guide ramp contacts the protrusion and squeezes to drive the retaining arm to expand outward, after being in place the retaining arm returns inward, the lower surface of the protrusion abuts against the upper surface of the first connecting portion to restrict the relative movement of the needle seat and the sharp component in a direction opposite to the assembly direction; the outer surface of the second connecting portion is adapted to the shape of the inner surface of the second receiving portion and fits against each other after being connected in place to restrict the relative rotation of the needle seat and the sharp component in a plane perpendicular to the assembly direction.

[0007] In the first aspect of this invention, the needle hub and the sharp component in the puncture assembly are connected by a connecting structure. The cooperation between the connecting portion and its corresponding receiving portion in the connecting structure can suppress relative movement between the sharp component and the needle hub in the direction opposite to the assembly direction (vertical direction) and relative rotation in a plane perpendicular to the assembly direction (left-right direction). Furthermore, the two pairs of cross-arranged connecting portions can form a stable and symmetrical force-bearing structure, which helps to enhance the overall rigidity and torsional resistance of the connecting structure. Thus, a highly reliable puncture assembly that can effectively reduce unwanted wobbling between the sharp component and the needle hub can be provided.

[0008] Furthermore, in the puncture assembly of this invention, optionally, the pair of first connecting portions and the pair of second connecting portions are arranged perpendicularly to each other. This helps to further improve structural stability.

[0009] Furthermore, in the puncture assembly of this utility model, optionally, the guide slope of the first connecting portion is referred to as the first guide slope, and the first receiving portion also has a second guide slope corresponding to the first guide slope, the second guide slope being formed on the upper surface of the protrusion. This facilitates the assembly of the needle hub and the sharp component.

[0010] Alternatively, in the puncture assembly of this invention, the pair of first connecting portions may share a common retaining arm, which extends from a first end corresponding to the first first connecting portion to a second end corresponding to the other first connecting portion, and has at least one protrusion at each of the first and second ends. In this case, a wider retaining arm provides greater rigidity, which helps improve structural stability and reduces the possibility of swaying.

[0011] Alternatively, in the puncture assembly of this invention, the pair of first connecting portions may share two clamping arms, with two protrusions on the same end of the first and second ends of the two clamping arms protruding towards each other but not in contact. In this case, the two clamping arms clamp the first connecting portions from two directions, which helps to further improve the stability of the clamping.

[0012] Additionally, in the puncture assembly of this utility model, optionally, the first connecting portion has two guide ramps. During the relative movement of the needle hub and the sharp component along the assembly direction, the first connecting portion enters between the two protrusions, and the two guide ramps respectively contact the two protrusions, causing the two holding arms to expand in a direction away from each other. This facilitates assembly.

[0013] Additionally, in the puncture assembly of this invention, optionally, the second receiving portion is formed by the retaining arms, and at least a portion of the opposing surfaces of the two retaining arms form the inner surface of the pair of second receiving portions. This helps to simplify the structure.

[0014] Furthermore, in the puncture assembly of this invention, optionally, the outer surface of the second connecting portion is an arc-shaped surface, and the second receiving portion is an arc-shaped groove with an inner arc-shaped surface. In this case, the surface contact constraint method has a larger contact area and stronger constraint force than point contact or line contact, which can more effectively suppress rotation and shaking, while improving the load-bearing capacity of the overall structure.

[0015] Additionally, in the puncture assembly of this utility model, optionally, the sharp component includes a needle handle and a sharp object. The first component or the second component is formed at one end of the needle handle, and the sharp object is disposed at the other end of the needle handle. The sharp object has a groove for accommodating the implantation portion of the sensor, and the extending direction of the groove is consistent with the length direction of the sharp object. This facilitates the subcutaneous implantation of the sensor using the sharp object.

[0016] A second aspect of this invention provides an application device for applying an implanted portion of a sensor to the subcutaneous tissue of a host. The device includes a driving assembly and a puncture assembly as described in the first aspect of this invention. The driving assembly drives the puncture assembly and the sensor to move towards the host to apply the implanted portion of the sensor to the subcutaneous tissue. In this second aspect, the application device includes a puncture assembly that effectively reduces unwanted movement between the sharp part and the needle hub, thereby providing a highly reliable application device.

[0017] According to this invention, a highly reliable puncture assembly and application device can be provided that can effectively reduce unwanted wobbling between the sharp part and the needle hub. Attached Figure Description

[0018] The present invention will now be explained in further detail by way of example only with reference to the accompanying drawings.

[0019] Figure 1 This is a schematic diagram illustrating an application scenario of the monitoring device involved in this utility model example.

[0020] Figure 2 This is a schematic diagram illustrating the sensor involved in this utility model example.

[0021] Figure 3 This is a schematic diagram illustrating the puncture assembly involved in this utility model example.

[0022] Figure 4 This is a schematic diagram showing the implantation portion of the sensor involved in this utility model example housed in the puncture assembly.

[0023] Figure 5 This is a schematic diagram showing the sharp component and needle holder not assembled according to the example of this utility model.

[0024] Figure 6 This is a schematic diagram showing the needle holder involved in the example of this utility model.

[0025] Figure 7 This is a schematic diagram showing the first component involved in this utility model example.

[0026] Figure 8 This is a schematic diagram showing the second component involved in this utility model example.

[0027] Explanation of reference numerals in the attached figures: 10…monitoring device, 1…sensor, 11…implantation part, 12…connection part, 2…communication component, 30…application device, 4…puncture component, 41…sharp part, 411…sharp object, 412…groove, 413…needle handle, 42…needle seat, 421…sharp object fixing part, 422…main body part, 50…connecting structure, 51…first component, 511…first connecting part, 512…first guide slope, 513…upper surface of the first connecting part, 515…second connecting part, 516…outer surface of the second connecting part, 517…third guide slope, 52…second component, 521…first receiving part, 522…holding arm, 523…protrusion, 5231…lower surface of the protrusion, 524…second guide slope, 525…second receiving part, 526…inner surface of the second receiving part, 527…fourth guide slope, S1…first end, S2…second end. Detailed Implementation

[0028] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. In the following description, the same reference numerals are used for the same parts, and repeated descriptions are omitted. Furthermore, the drawings are merely schematic diagrams, and the proportions of the parts or the shapes of the parts may differ from the actual figures.

[0029] It should be noted that the terms "comprising" and "having" in this utility model, and any variations thereof, such as the process, method, system, product, or device that includes or has a series of steps or units, are not necessarily limited to those steps or units that are explicitly listed, but may include or have other steps or units that are not explicitly listed or that are inherent to these processes, methods, products, or devices.

[0030] It should be noted that in this article, relative position and direction terms such as "above", "facing upward", "below", "facing downward", "up and down direction", "left side", "facing left side", "left side", "facing left side", "right side", "facing right side", "right side", "facing right side", "left and right direction", "front", "facing forward", "back", "facing backward", and "front and back direction" are used with reference to the usual operating posture and should not be considered as restrictive.

[0031] This invention relates to a puncture assembly for applying the implantation portion of a sensor to the subcutaneous tissue of a host. The puncture assembly of this invention is a highly reliable puncture assembly that effectively reduces unwanted movement between the sharp part and the needle hub. The puncture assembly of this invention may also be referred to as a sharp part assembly, a needle assembly, or an implantation needle assembly.

[0032] This invention relates to an application device for applying the implantation portion of a sensor to the subcutaneous tissue of a host. The application device may include the aforementioned puncture assembly that effectively reduces unwanted movement between the sharp component and the needle hub, thus providing a highly reliable application device. The application device of this invention may also be referred to as a propulsion device, transport device, implantation device, dressing device, or auxiliary device, etc.

[0033] Furthermore, the sensor involved in this invention can be used as part of a monitoring device, and the application device can also apply the monitoring device, including the sensor, to the host, and implant the sensor subcutaneously. The monitoring device involved in this invention can also be called a monitor, a continuous analyte monitor, a detection device, a sensor assembly, or an information acquisition device.

[0034] The puncture assembly and application device involved in this utility model will be described in detail below with reference to the accompanying drawings.

[0035] Figure 1 This is a schematic diagram illustrating an application scenario of the monitoring device 10 involved in this utility model example.

[0036] In some examples, the monitoring device 10 may include a sensor 1. The sensor 1 can be used to monitor an analyte. Specifically, when the target analyte comes into contact with the sensor 1, the sensor 1 generates a sensing signal corresponding to the analyte. This facilitates monitoring of the analyte using the monitoring device 10. In some examples, the sensor 1 may be at least partially placed at a target location to monitor the analyte level at that location. In some examples, the target location may be subcutaneous tissue of an organism. This enables monitoring of the analyte within the organism. For example, the sensor 1 may be partially implanted subcutaneously in a human body, in contact with the user's bodily fluids (e.g., tissue fluid or blood) to monitor the concentration of the analyte within the user's body.

[0037] In some examples, monitoring device 10 may include communication component 2 (see Figure 1 Communication component 2 can transmit the sensing signals detected by sensor 1. In some examples, sensor 1 can be used in conjunction with communication component 2. For details, see [link to documentation]. Figure 1 Sensor 11 can be combined with communication component 2 to form monitoring device 10, with monitoring device 10 located on the surface of the host and sensor 1 located at least partially under the skin of the host. At this time, analytes in the host can be monitored, and the sensing signal that indicates the level of analytes sensed by sensor 1 can be sent out through communication component 2.

[0038] In some examples, the monitoring device 10 can communicate with an external device. That is, in some examples, the communication component 2 can send the sensing signal detected by the sensor 1 to the external device. In some examples, the external device may include a display unit. In this case, the analyte level information can be visually displayed through the external device. In some examples, the external device can process the received data to obtain the analyte level information. In some examples, the external device may also be a smart terminal with an application installed that is compatible with the monitoring device 10. In some examples, the smart terminal may be a laptop computer, tablet computer, smartphone, or smartwatch, etc. In some examples, the external device may also be a relay device, through which data is sent to a predetermined terminal.

[0039] See Figure 1 The monitoring device 10, including sensor 1, can be applied to the host via application device 30. Sensor 1, applied to the host, can be at least partially implanted under the host's skin to monitor the host's physiological information. In some examples, application device 30 may also apply sensor 1 only to the host, and communication component 2 may be applied to the host's body surface before sensor 1 is implanted, or applied to the host's body surface after sensor 1 is applied to the host and assembled with sensor 1.

[0040] Figure 2 This is a schematic diagram illustrating the sensor 1 involved in this utility model example.

[0041] In some examples, sensor 1 may include an implanted portion 11 (see Figure 2 The implantable portion 11 can be implanted subcutaneously in the host, and during use, the implantable portion 11 can be located subcutaneously in contact with the analyte. Thus, the analyte within the host body can be monitored via the sensor 1. In some examples, the sensor 1 may include a connection portion 12 (see...). Figure 2 The implanted portion 11 can be electrically connected to the communication component 2 via the connecting portion 12. In use, the implanted portion 11 can be located subcutaneously, and the connecting portion 12 can be located externally. Therefore, the implanted portion 11 can also be referred to as the internal portion of the sensor 1, and the connecting portion 12 can also be referred to as the external portion of the sensor 1.

[0042] In some examples, sensor 1 can be flexible. In some examples, at least the implanted portion 11 of sensor 1 can be flexible. In this case, the possibility of secondary damage caused by tissue movement after sensor 1 is implanted subcutaneously can be reduced, and the host's physical comfort after implantation subcutaneously can be improved. Since a flexible sensor 1 usually cannot be directly inserted subcutaneously due to its rigidity, it can usually be implanted subcutaneously by means of a puncture component 4 with a sharp object 411. The sharp object 411 provides a path for the sensor 1 to be inserted subcutaneously, and the sharp object 411 is removed from the subcutaneous tissue after implantation, so that sensor 1 remains subcutaneously to function.

[0043] Figure 3 This is a schematic diagram showing the puncture component 4 involved in this utility model example. Figure 4 This is a schematic diagram showing the implantation portion 11 of the sensor 1 involved in this utility model example being housed in the puncture assembly 4.

[0044] In some examples, sensor 1 can be implanted subcutaneously into the host via application device 30. In some examples, application device 30 may include puncture component 4. In some examples, sensor 1 can be implanted subcutaneously into the host via puncture component 4. Puncture component 4 can provide a puncture path for sensor 1. Sensor 1 can follow puncture component 4 into the subcutaneous tissue of the host. In some examples, puncture component 4 may include a sharp part 41. Sharp part 41 can provide a puncture path for sensor 1.

[0045] In some examples, the sharp component 41 may include a sharp object 411. The sharp object 411 may have a groove 412 for receiving the implantation portion 11 of the sensor 1. That is, the implantation portion 11 of the sensor 1 can be received in the groove 412 of the sharp object 411. This facilitates the subcutaneous implantation of the implantation portion 11 of the sensor 1 via the sharp object 411. See also Figure 4 The implantation portion 11 of sensor 1 is located in the groove 412 of the sharp object 411. By pushing the sharp object 41 and sensor 1 toward the host, the sharp object 41 can provide a puncture path for sensor 1 to be percutaneously implanted under the skin of the host. In some examples, the extension direction of the groove 412 is consistent with the length direction of the sharp object 411.

[0046] In other examples, the sharp object 411 can also be a solid needle. By placing the sensor 1 at an angle to the solid needle and making the tip of the solid needle closer to the bottom than the tip of the sensor 1, a puncture path for the sensor 1 to enter the subcutaneous tissue can also be provided by the solid needle during implantation.

[0047] Figure 5 This is a schematic diagram showing the sharp component 41 and the needle holder 42 of this utility model not assembled.

[0048] In some examples, the puncture assembly 4 may include a needle hub 42. The needle hub 42 may receive and support the sharp part 41. See also Figure 5 The sharp part 41 can be mounted to the needle holder 42 along direction D. In some examples, the application device 30 may include a housing. In some examples, the needle holder 42 may be disposed within the housing of the application device 30. In some examples, the application device 30 may include a drive assembly. The drive assembly can drive the needle holder 42 and move the sharp part 41 and the sensor 1 together toward the host. This facilitates the application of the sensor 1 to the host.

[0049] In some examples, the puncture assembly 4 may include a connection structure 50. The needle hub 42 and the sharp part 41 can be connected via the connection structure 50.

[0050] Figure 6 This is a schematic diagram showing the needle holder involved in the example of this utility model. Figure 7 This is a schematic diagram showing the first component 51 involved in this utility model example. Figure 8 This is a schematic diagram showing the second component 52 involved in this utility model example.

[0051] In some examples, the connecting structure 50 may include a first component 51 and a second component 52. The first component 51 and the second component 52 may be respectively disposed on the needle holder 42 and the sharp member 41. The engagement of the first component 51 and the second component 52 enables the needle holder 42 to be connected to the sharp member 41. That is, in some examples, one of the first component 51 and the second component 52 may be disposed on the needle holder 42, and the other on the sharp member 41. In some examples, one of the first component 51 and the second component 52 may be disposed at one end of the needle holder 42, and the other at one end of the sharp member 41. This facilitates the connection of the ends of the two components.

[0052] The following is a detailed description of the first component 51 and the second component 52, with the first component 51 disposed on the needle holder 42 and the second component 52 disposed on the sharp part 41. It should be noted that this example is not a limitation on the connecting structure 50, and the positions of the first component 51 and the second component 52 can also be interchanged.

[0053] In some examples, the needle holder 42 may include a sharp object retainer 421 (see [reference]). Figure 6 The sharp object fixing part 421 can be used to pick up and fix the sharp part 41. In some examples, the first member 51 can be provided on the sharp object fixing part 421. In some examples, the first member 51 can be provided at the lower end of the sharp object fixing part 421. Thus, it is convenient to assemble the sharp part 41 and the needle holder 42 in the vertical direction.

[0054] In some examples, the sharp part 41 may include a needle shank 413 (see Figure 3 The sharp object 411 can be connected to the needle holder 42 via the needle shank 413. Specifically, one end of the needle shank 413 can be connected to the needle holder 42, and the sharp object 411 can be disposed at the other end of the needle shank 413. In some examples, the second component 52 can be disposed on the needle shank 413. In some examples, the second component 52 can be disposed at the upper end of the needle shank 413. Thus, it is convenient to assemble the sharp component 41 and the needle holder 42 in the vertical direction.

[0055] In some examples, the first component 51 may include a first connecting portion 511 (see...) Figure 7 In some examples, the second member 52 may include a first receiving portion 521 corresponding to the first connecting portion 511 (see [reference]). Figure 8 The first connecting portion 511 can cooperate with the first receiving portion 521 to restrict the relative movement of the needle holder 42 and the sharp member 41 in a direction opposite to their assembly direction. Specifically, the needle holder 42 and the sharp member 41 can be assembled together by moving relative to each other in an assembly direction that brings them closer together. After assembly, the first connecting portion 511 can cooperate with the first receiving portion 521 to prevent the needle holder 42 and the sharp member 41 from separating. That is, in the assembled state of the needle holder 42 and the sharp member 41, the first connecting portion 511 can cooperate with the first receiving portion 521 to prevent the needle holder 42 and the sharp member 41 from separating.

[0056] For example, see Figure 5 The sharp part 41 can move along direction D to be assembled into the needle holder 42. After assembly, the first connecting part 511 can cooperate with the first receiving part 521 to prevent the sharp part 41 from moving in the opposite direction to direction D (away from the needle holder 42). Alternatively, the needle holder 42 can move along the opposite direction to direction D (near the sharp part 41) to pick up the sharp part 41. After assembly, the first connecting part 511 can cooperate with the first receiving part 521 to prevent the needle holder 42 from moving in the opposite direction to direction D (away from the sharp part 41). For ease of description, direction D and the direction opposite to direction D are described as up and down directions.

[0057] In some examples, the first connecting portion 511 may have a guide ramp 512 (see Figure 7 The guide ramp 512 of the first connecting portion 511 is referred to as the first guide ramp 512. In some examples, the first receiving portion 521 may have a pivotable holding arm 522 (see...). Figure 8 In some examples, the holding arm 522 may have a protrusion 523 (see [reference]). Figure 8In some examples, protrusion 523 may have a lower surface 5231 (see...). Figure 8 The first connecting portion 511 may have an upper surface 513 (see...). Figure 7 ).

[0058] In some examples, as the needle holder 42 and the sharp member 41 move relative to each other in an assembly direction that brings them closer together, the guide ramp contacts the protrusion 523 and squeezes to drive the retaining arm 522 to expand outward. After it is in place, the retaining arm 522 returns to its inward position, and the lower surface 5231 of the protrusion 523 abuts against the upper surface 513 of the first connecting portion 511 to limit the relative movement of the needle holder 42 and the sharp member 41 in a direction opposite to the assembly direction.

[0059] In some examples, the retaining arm 522 may be formed on the outside of the needle shank 413, and the protrusion 523 may protrude inward from the upper end of the retaining arm 522.

[0060] In some examples, the first receiving portion 521 may have a second guide ramp 524 corresponding to the first guide ramp 512 (see [reference]). Figure 8 This facilitates the assembly of the needle holder 42 and the sharp component 41. In some examples, the second guide ramp 524 can be formed on the upper surface of the protrusion 523. That is, the second guide ramp 524 is the upper surface of the protrusion 523. This facilitates the assembly of the needle holder 42 and the sharp component 41.

[0061] In some examples, the first guide ramp 512 and the second guide ramp 524 have the same inclination direction. This facilitates the cooperation of the first guide ramp 512 and the second guide ramp 524 for guidance during assembly.

[0062] In some examples, the first component 51 may include a pair of first connecting portions 511 (see...) Figure 7 In some examples, the first member 51 may include a pair of symmetrical first connecting portions 511. That is, the first member 51 may include two first connecting portions 511, and the two first connecting portions 511 may be symmetrical. In some examples, the pair of first connecting portions 511 may be arranged symmetrically. In some examples, the second member 52 may include a pair of first receiving portions 521 corresponding to the pair of first connecting portions 511. This can help improve the stability of the connection. In some examples, the pair of first connecting portions 511 may be arranged on opposite sides of the needle holder 42. In some examples, the pair of first receiving portions 521 may be arranged on opposite sides of the needle shank 413. See also Figure 7 and Figure 8 The first component 51 may include a first connecting portion 511a and a first connecting portion 511b, and the second component 52 may include a first receiving portion 521a and a first receiving portion 521b.

[0063] In some examples, a pair of first connecting portions 511 may share the same holding arm 522. This shared holding arm 522 can extend from a first end S1 corresponding to the first first connecting portion 511 to a second end S2 corresponding to the other first connecting portion 511, and has at least one protrusion 523 at both the first end S1 and the second end S2. In this case, a wider holding arm 522 provides greater rigidity, which helps to improve structural stability and reduce the possibility of swaying.

[0064] See Figure 8 The shared holding arm 522 can extend from the first end S1 corresponding to the first first connecting part 511 to the second end S2 corresponding to the other first connecting part 511. The first first connecting part 511a can cooperate with the first protrusion 523, and the second first connecting part 511b can cooperate with the second protrusion 523.

[0065] In some examples, a pair of first connecting portions 511 may share two retaining arms 522. Two protrusions 523 on the same end of the first end S1 and the second end S2 of these two retaining arms 522 protrude towards each other but do not contact each other. In this case, the two retaining arms 522 retain the first connecting portions 511 from two directions, which helps to further improve the stability of the retaining mechanism.

[0066] See Figure 8 Both holding arms 522 (holding arm 522a and holding arm 522b) extend from the first end S1 corresponding to the first first connecting part 511 to the second end S2 corresponding to the other first connecting part 511. The two protrusions 523 (protrusions 523a and 523b) of the two holding arms 522 located at the first end S1 can cooperate with the first first connecting part 511a, and the two protrusions 523 (protrusions 523c and 523d) of the two holding arms 522 located at the second end S2 can cooperate with the second first connecting part 511b.

[0067] In some examples, the first connecting portion 511 may have two guide ramps. During the relative movement of the pin seat 42 and the sharp member 41 along the assembly direction, the first connecting portion 511 enters between the two protrusions 523, and the two guide ramps respectively contact the two protrusions 523, causing the two retaining arms 522 to expand in a direction away from each other. This facilitates assembly. In some examples, the upper surfaces of the two protrusions 523 corresponding to the first connecting portion 511 may each have guide ramps. This also facilitates assembly.

[0068] In some examples, the first component 51 may include a second connecting portion 515 (see...) Figure 7In some examples, the second member 52 may include a second receiving portion 525 corresponding to the second connecting portion 515 (see [reference]). Figure 8 The second connecting portion 515 can cooperate with the second receiving portion 525 to restrict relative rotation between the needle holder 42 and the sharp member 41 in a plane perpendicular to the assembly direction. Specifically, the needle holder 42 and the sharp member 41 can be assembled together by moving relative to each other along an assembly direction that brings them closer together. After assembly, the second connecting portion 515, in cooperation with the second receiving portion 525, can suppress relative rotation between the needle holder 42 and the sharp member 41. That is, in the assembled state of the needle holder 42 and the sharp member 41, the first connecting portion 511 can cooperate with the first receiving portion 521 to suppress relative rotation between the needle holder 42 and the sharp member 41. In some examples, the second connecting portion 515 may have a different structure than the first connecting portion 511.

[0069] In some examples, the outer surface 516 of the second connecting portion 515 may be adapted to the shape of the inner surface 526 of the second receiving portion 525. The outer surface 516 of the second connecting portion 515 and the inner surface 526 of the second receiving portion 525 abut each other after the needle holder 42 and the sharp member 41 are connected in place. This facilitates limiting relative rotation between the needle holder 42 and the sharp member 41. In some examples, surface shape adaptation means that at least a portion of the two surfaces have substantially the same shape. This allows the two surfaces to abut each other after the two components are assembled in place.

[0070] In some examples, the outer surface 516 of the second connecting portion 515 can be an arc surface, and the inner surface 526 of the second receiving portion 525 can also be an arc surface. In this case, the surface contact constraint method has a larger contact area and stronger constraint force than point contact or line contact, which can more effectively suppress rotation and sway, while improving the load-bearing capacity of the overall structure. In some examples, the second receiving portion 525 is an arc-shaped groove with an arc surface on the inner surface. In some examples, the outer surface 516 of the second connecting portion 515 can be an arc surface, a polygonal surface, or a combination of a polygonal and an arc surface.

[0071] In some examples, the second receiving portion 525 may be formed by a retaining arm 522. Specifically, the retaining arm 522 may protrude upward from the outer periphery of the end of the needle shank 413, and the inner wall of the retaining arm 522 may be formed as the inner surface 526 of the second receiving portion 525. This helps to simplify the structure.

[0072] In some examples, the second connection 515 may have a guide ramp 517 (see Figure 7The guide ramp 517 of the second connecting portion 515 is referred to as the third guide ramp 517. In some examples, the second receiving portion 525 may have a fourth guide ramp 527 corresponding to the third guide ramp 517. During the relative movement of the needle seat 42 and the sharp member 41 along an assembly direction approaching each other, the third guide ramp 517 may cooperate with the fourth guide ramp 527 to guide the second connecting portion 515 into the second receiving portion 525. In some examples, the inclination directions of the third guide ramp 517 and the fourth guide ramp 527 may be approximately the same.

[0073] In some examples, the first component 51 may include a pair of second connecting portions 515. In some examples, the first component 51 may include a pair of symmetrical second connecting portions 515. That is, the first component 51 may include two second connecting portions 515, and the two second connecting portions 515 may be symmetrical. In some examples, the pair of second connecting portions 515 may be arranged symmetrically. In some examples, the second component 52 may include a pair of second receiving portions 525 corresponding to the pair of second connecting portions 515. This can help improve the stability of the connection. In some examples, the pair of second connecting portions 515 may be arranged on opposite sides of the needle holder 42. In some examples, the pair of second receiving portions 525 may be arranged on opposite sides of the needle shank 413. See also Figure 7 and Figure 8 The first component 51 may include a second connecting portion 515a and a second connecting portion 515b, and the second component 52 may include a second receiving portion 525a and a second receiving portion 525b.

[0074] In some examples, in a configuration where a pair of first connecting portions 511 share two retaining arms 522, at least a portion of the opposing surfaces of the two retaining arms 522 can form the inner surfaces 526 of a pair of second receiving portions 525. This helps to simplify the structure.

[0075] See Figure 8 At least a portion of the opposing surfaces of the two holding arms 522 can form the inner surfaces 526 of a pair of second receiving portions 525.

[0076] In some examples, a pair of first connecting parts 511 and a pair of second connecting parts 515 can be arranged in an alternating pattern. In this case, the two pairs of connecting parts arranged in an alternating pattern can form a stable and symmetrical load-bearing structure, which helps to enhance the overall rigidity and torsional resistance of the connecting structure 50. See also Figure 7 A pair of first connecting parts 511 can be arranged along line CG, and a pair of second connecting parts 515 can be arranged along line AU. Line CG can be designed to intersect with line AU. In some examples, the intersecting pair of first connecting parts 511 and the pair of second connecting parts 515 can be in an X shape or a cross shape.

[0077] In some examples, a pair of first connecting portions 511 and a pair of second connecting portions 515 are arranged perpendicularly to each other. That is, the pair of first connecting portions 511 and the pair of second connecting portions 515 can be arranged perpendicularly to each other to form a roughly cross-shaped structure. This helps to further improve the structural stability.

[0078] In some examples, preferably, the puncture assembly 4 may include a needle hub 42, a sharp member 41, and a connecting structure 50. The needle hub 42 and the sharp member 41 are connected by the connecting structure 50. The connecting structure 50 includes a first member 51 and a second member 52. One of the first member 51 and the second member 52 is disposed at one end of the needle hub 42, and the other is disposed at one end of the sharp member 41. The first member 51 includes a pair of symmetrical first connecting portions 511 and a pair of symmetrical second connecting portions 515, which are arranged intersectingly. The second member 52 includes a pair of first receiving portions 521 corresponding to the pair of first connecting portions 511 and a pair of second receiving portions 525 corresponding to the pair of second connecting portions 515. 11 has a guide ramp, and the first receiving portion 521 has a pivotable holding arm 522. The holding arm 522 has a protrusion 523. During the relative movement of the needle seat 42 and the sharp member 41 along the assembly direction that is close to each other, the guide ramp contacts the protrusion 523 and squeezes to drive the holding arm 522 to expand outward. After it is in place, the holding arm 522 returns to its inward position. The lower surface of the protrusion 523 abuts against the upper surface of the first connecting portion 511 to limit the relative movement of the needle seat 42 and the sharp member 41 in the direction opposite to the assembly direction. The outer surface 516 of the second connecting portion 515 is adapted to the shape of the inner surface 526 of the second receiving portion 525 and fits against each other after being connected in place to limit the relative rotation of the needle seat 42 and the sharp member 41 in a plane perpendicular to the assembly direction.

[0079] In summary, the first aspect of this utility model provides a highly reliable puncture assembly 4 that can effectively reduce unwanted wobbling between the sharp part 41 and the needle seat 42.

[0080] As mentioned above, this utility model also provides an application device 30.

[0081] In some examples, the application device 30 may include a puncture component 4. The puncture component 4 is the puncture component 4 described in the first aspect of this utility model, and its specific structure can be found in the preceding description, which will not be repeated here.

[0082] In some examples, the application device 30 may include a driving component. In some examples, the driving component may drive the puncture component 4 and the sensor 1 / monitoring device 10 toward the host to apply the implantation portion 11 of the sensor 1 to the subcutaneous tissue of the host. In this case, the application device 30 includes the puncture component 4, which can effectively reduce unwanted wobbling between the sharp part 41 and the needle hub 42, thereby providing a highly reliable application device 30.

[0083] In some examples, the actuation component may act on the needle hub 42 to push the puncture assembly 4 and the sensor 1 / monitoring device 10 toward the host. In some examples, the actuation component may include a spring.

[0084] In some examples, the application device 30 may include a housing. In some examples, the housing may contain a receiving portion for accommodating the sensor 1 / monitoring device 10. In some examples, the puncture assembly 4 may be arranged adjacent to the receiving portion.

[0085] In some examples, the puncture assembly 4 can be releasably coupled to the housing. After the puncture assembly 4 is released from the housing, the actuating device can act on the needle hub 42 to push the puncture assembly 4 and the sensor 1 / monitoring device 10 toward the host. In some examples, the releasable coupling of the puncture assembly 4 to the housing can be either a direct releasable connection between the puncture assembly 4 and the housing, or an indirect releasable connection via another component. For example, in some examples, the needle hub 42 may include a body portion 422. The body portion 422 can be used to cooperate with other components of the application device 30. For example, the application device 30 may include a first retaining portion that releasably holds the needle hub 42, and the body portion 422 may have a first locking portion that cooperates with the first retaining portion. The first retaining portion and the first locking portion enable the housing to releasably hold the puncture assembly 4.

[0086] In some examples, the application device 30 may include a needle withdrawal assembly. The needle withdrawal assembly can be used to drive the puncture assembly 4 from a first position where at least part of the sharp object 411 is located under the host skin upon implantation to a second position where the puncture assembly 4 is completely within the housing. In some examples, the puncture assembly 4 may be releasably coupled to the receptacle. In some examples, the needle withdrawal assembly may include a needle withdrawal spring. The needle withdrawal spring may be disposed between the needle hub 42 and the receptacle. After the sharp object 411 and sensor 1 are inserted subcutaneously, the needle hub 42 may be released by the receptacle to drive the puncture assembly 4 from the first position to the second position using the needle spring. In some examples, the releasable coupling of the puncture assembly 4 to the receptacle may be a direct releasable connection between the puncture assembly 4 and the releasable connection to the receptacle, or it may be an indirect releasable connection via another component.

[0087] In some examples, preferably, the application device 30 may include a receiving portion, a driving component, and a puncture component 4. The sensor 1 / monitoring device 10 may be assembled into the receiving portion, and the implantation portion 11 of the sensor 1 may be disposed in the puncture component 4. The driving component is used to push the sensor 1 / monitoring device 10 to the host. During this process, the implantation portion 11 of the sensor 1 may be carried into the skin by the puncture component 4. Finally, the puncture component 4 can be removed from the subcutaneous tissue.

[0088] Regarding the application device 30 of this utility model, other than the puncture component 4, the other structures can be referred to the descriptions of various application devices 30 in the prior art, as long as they can apply the monitoring device 10 to the predetermined position and make the sensor 1 at least partially implanted under the skin of the host, which will not be described in detail here.

[0089] In summary, this invention provides a highly reliable puncture assembly 4 and application device 30 that can effectively reduce unwanted wobbling between the sharp part 41 and the needle seat 42.

[0090] Although the present invention has been specifically described above in conjunction with the accompanying drawings and examples, it is to be understood that the above description does not limit the present invention in any way. Those skilled in the art can make modifications and variations to the present invention as needed without departing from the essential spirit and scope of the present invention, and all such modifications and variations fall within the scope of the present invention.

Claims

1. A puncture assembly for applying an implantation portion of a sensor to the subcutaneous tissue of a host, the puncture assembly providing a puncture path for the sensor, characterized in that, The puncture assembly includes a needle hub, a sharp component, and a connecting structure. The needle hub and the sharp component are connected by the connecting structure. The connecting structure includes a first component and a second component. One of the first component and the second component is disposed at one end of the needle hub, and the other is disposed at one end of the sharp component. The first component includes a pair of symmetrical first connecting portions and a pair of symmetrical second connecting portions, which are arranged intersectingly. The second component includes a pair of first receiving portions corresponding to the pair of first connecting portions and a pair of second receiving portions corresponding to the pair of second connecting portions. The first connecting portions have guide bevels. The first receiving portion has a pivotable retaining arm with a protrusion. During the relative movement of the needle seat and the sharp component along an assembly direction approaching each other, the guide ramp contacts and presses against the protrusion, causing the retaining arm to expand outward. After reaching its position, the retaining arm returns inward. The lower surface of the protrusion abuts against the upper surface of the first connecting portion to restrict the relative movement of the needle seat and the sharp component in a direction opposite to the assembly direction. The outer surface of the second connecting portion is adapted to the shape of the inner surface of the second receiving portion and fits against each other after being connected in place to restrict the relative rotation of the needle seat and the sharp component in a plane perpendicular to the assembly direction.

2. The puncture assembly according to claim 1, characterized in that, The pair of first connecting parts and the pair of second connecting parts are arranged perpendicularly to each other.

3. The puncture assembly according to claim 1, characterized in that, The guide slope of the first connecting part is referred to as the first guide slope, and the first receiving part also has a second guide slope corresponding to the first guide slope, the second guide slope being formed on the upper surface of the protrusion.

4. The puncture assembly according to claim 1, characterized in that, The pair of first connecting portions share the same retaining arm, which extends from a first end corresponding to the first first connecting portion to a second end corresponding to the other first connecting portion, and has at least one protrusion at each of the first and second ends.

5. The puncture assembly according to claim 4, characterized in that, The pair of first connecting portions share two clamping arms, and the two protrusions at the same end of the first and second ends of the two clamping arms protrude towards each other but do not contact each other.

6. The puncture assembly according to claim 5, characterized in that, The first connecting portion has two guide ramps. During the relative movement of the needle seat and the sharp component along the assembly direction, the first connecting portion enters between the two protrusions and the two guide ramps contact the two protrusions respectively, causing the two holding arms to expand in a direction away from each other.

7. The puncture assembly according to claim 5, characterized in that, The second receiving portion is formed by the retaining arms, and at least a portion of the opposing surfaces of the two retaining arms form the inner surfaces of the pair of second receiving portions.

8. The puncture assembly according to claim 1 or 7, characterized in that, The outer surface of the second connecting part is an arc surface, and the second receiving part is an arc-shaped groove with an inner arc surface.

9. The puncture assembly according to claim 1, characterized in that, The sharp component includes a needle handle and a sharp object. The first component or the second component is formed at one end of the needle handle, and the sharp object is disposed at the other end of the needle handle. The sharp object has a groove for accommodating the implanted portion of the sensor, and the extension direction of the groove is consistent with the length direction of the sharp object.

10. An application device for applying an implanted portion of a sensor to the subcutaneous tissue of a host, characterized in that, The device includes a drive component and a puncture component according to any one of claims 1-9, wherein the drive component drives the puncture component and the sensor to move toward the host to apply the implantation portion of the sensor to the subcutaneous tissue of the host.

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