Grid plug-in structure and medical device with same

Abstract

The application discloses a grid plug structure and medical equipment with the same. The grid plug structure comprises a grid and a frame body of a detector. The grid comprises a grid main body and a pair of clamping pieces arranged at the front side of the grid main body in the insertion direction. The clamping pieces are arranged at intervals, and a clamping hole is arranged between the clamping piece and the grid main body. The grid plug structure further comprises a clamping mechanism mounted on the frame body. The clamping mechanism comprises two groups of clamping wheel assemblies arranged at intervals. Each clamping wheel assembly comprises a clamping roller, a first mounting seat and a first elastic piece. The clamping roller is elastically mounted on the first mounting seat through the first elastic piece. When the grid is inserted into the frame body, the pair of clamping pieces can push the two clamping rollers away from each other and compress the first elastic pieces. After the clamping pieces pass the clamping rollers, the first elastic pieces push the two clamping rollers to be relatively close to each other and elastically clamped into the clamping hole. The grid plug structure can realize smooth insertion of the grid and reliable positioning.

Description

Technical Field

[0001] This application relates to the field of filter grid assembly and disassembly structures, and particularly to a filter grid plug-in structure and a medical device having the same. Background Technology

[0002] In digital angiography (DAC) procedures, the grid serves to filter stray radiation, reduce haze, and improve contrast, thereby enhancing image quality. Typically, the grid is fixed below the detector in the angiography device and generally does not need to be removed during use. However, in cases involving children under 12 years old and weighing less than 45 kg, the grid needs to be removed because children require smaller doses and experience less scattered radiation.

[0003] Existing methods for fixing the wire mesh mainly include two approaches: directly fixing it to the detector housing with screws, and inserting it into the space between the detector and the housing. For the method of directly fixing it to the detector housing with screws, removing the wire mesh requires specialized tools, which is inconvenient and inefficient. Furthermore, the wire mesh being directly exposed in the surgical environment also causes inconvenience during sterilization.

[0004] For insert-type installation, the aforementioned problem of inconvenient sterilization in the surgical environment does not exist. However, most existing filter grid insertion structures achieve fixation through simple snap-fit ​​mechanisms, which are relatively difficult to insert, prone to jamming when ejecting, and often suffer from unreliable locking during use. Summary of the Invention

[0005] This application provides a filter grid insertion and removal structure and a medical device having the same, which enables smooth insertion and reliable positioning of the filter grid.

[0006] According to a first aspect of this application, a filter grid insertion and removal structure is provided, including a frame body of a filter grid and a detector. The filter grid includes a filter grid body and a pair of fasteners disposed on the front side of the filter grid body in the insertion direction. The pair of fasteners are spaced apart, and a locking slot is provided between the fasteners and the filter grid body.

[0007] The filter grid plug-in structure also includes a clamping mechanism installed on the frame body. The clamping mechanism includes two sets of clamping wheel assemblies spaced apart. The clamping wheel assembly includes a clamping roller, a first mounting base and a first elastic element. The clamping roller is elastically mounted on the first mounting base through the first elastic element.

[0008] When the filter grid is inserted into the frame, a pair of fasteners can push the two clamping rollers away from each other and compress the first elastic member. After the fasteners pass the clamping rollers, the first elastic member pushes the two clamping rollers closer together and elastically locks them into the bayonet.

[0009] Furthermore, the clamping mechanism also includes a button that at least partially exposes the outer surface of the detector and a linkage component that is linked between the button and the two sets of clamping wheel assemblies. The linkage component is configured to transmit the downward movement of the button to the two sets of clamping wheel assemblies, so as to simultaneously drive the two clamping rollers away from each other and out of the clamping slot.

[0010] Furthermore, the first mounting base is slidably connected to the frame body; the linkage component includes a linkage member fixedly disposed on the lower end side of the button, and two connecting rods rotatably connected to the linkage member at one end, and the other ends of the two connecting rods are respectively rotatably connected to the two first mounting bases. The linkage member can drive the two connecting rods to swing as the button moves downward, and respectively push the two first mounting bases to slide away from each other.

[0011] Furthermore, the filter grid insertion and removal structure also includes an elastic ejection mechanism mounted on the frame body. The elastic ejection mechanism includes a second elastic member with one end fixed relative to the frame body. When the filter grid is inserted into the frame body, the front end of the filter grid pushes against the other end of the second elastic member, so that the second elastic member is compressed and accumulates elastic potential energy.

[0012] Furthermore, the elastic ejection mechanism also includes a push plate and a second mounting base. The second mounting base is fixedly disposed on the frame body, and the two ends of the second elastic member are respectively fixed relative to the second mounting base and the push plate. When the filter grid is inserted into the frame body, the front end of the filter grid pushes against the second elastic member through the push plate.

[0013] Furthermore, the filter grid insertion and removal structure includes two sets of elastic ejection mechanisms, which are symmetrically arranged with respect to the filter grid.

[0014] Furthermore, the front end of the fastener is provided with a guide slope, and when the filter grid is inserted into the frame, the guide slope can gradually push the clamping rollers away from each other.

[0015] Furthermore, the clamping roller is configured as a rolling bearing capable of rotating about a fixed axis.

[0016] Furthermore, the filter grid also includes a front frame that is detachably fixed to the front side of the filter grid body in the insertion direction, and the fastener is fixedly disposed at the center of the front frame in the width direction.

[0017] According to a second aspect of this application, a medical device is also provided, the medical device comprising a device body and a filter grid plug-in structure as described above.

[0018] The technical solutions provided by the embodiments of this application may include the following beneficial effects:

[0019] When the filter grid is inserted into the frame, a pair of fasteners push two clamping rollers respectively. Since the clamping rollers are mounted on the first mounting base via a first elastic element, the first elastic element is compressed when the fastener pushes the clamping rollers to avoid the fastener. As the fastener continues to move forward past the area between the two clamping rollers, the elastic force of the first elastic element pushes the two clamping rollers closer together and elastically locks them into the slot. In this way, the filter grid is reliably locked into the frame. During this process, the elasticity of the first elastic element allows the two clamping rollers to move closer and further apart, thus allowing them to be pushed to avoid the fastener during insertion. During further insertion, the elastic potential energy accumulated by the compression of the first elastic element is released, pushing the two clamping rollers closer together and locking them into the slot, thereby reliably maintaining the filter grid in the locked position. Compared to using a rigid snap-fit ​​structure, the solution in this application has a better feel when inserted, and since the position of the snap-fit ​​is fixed, the elastic force of the first elastic element can be freely configured. Therefore, the snap-fit ​​position and the degree of snap-fit ​​can be flexibly configured and adjusted.

[0020] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0021] Figure 1 This is a partial structural schematic diagram of a medical device according to an embodiment of this application;

[0022] Figure 2 yes Figure 1 A schematic diagram of the structure of the filter grid in the image;

[0023] Figure 3 yes Figure 2 Enlarged view of part A of the filter grid shown;

[0024] Figure 4 yes Figure 1 The diagram shows the structure of the filter grid insertion and removal mechanism. In the diagram, the filter grid has not yet been inserted and secured.

[0025] Figure 5 yes Figure 1The diagram shows the structure of the filter wire grid insertion and removal structure, in which the filter wire is in a locked state.

[0026] Figure 6 yes Figure 4 Enlarged view of part B of the structure shown;

[0027] Figure 7 yes Figure 5 Enlarged view of section C of the structure shown;

[0028] Figure 8 This is a schematic diagram of the clamping mechanism according to one embodiment. In order to show the mounting position of the first elastic member, part of the structure has been removed.

[0029] Figure 9 yes Figure 8 A schematic cross-sectional view of the clamping mechanism shown in the diagram;

[0030] Figure 10 This is a schematic diagram of the structure of an elastic ejection mechanism according to an embodiment. In order to show the installation position and orientation of the second elastic element, the second mounting base is rendered with perspective.

[0031] Figure 11 yes Figure 10 The diagram shows a structural schematic of the elastic ejection mechanism from another perspective.

[0032] Explanation of reference numerals in the attached figures:

[0033] 100. Filter grid; 11. Filter grid body; 12. Front frame; 13. Fastener; 131. Guide slope; 14. Bayonet; 200. Detector; 21. Frame body; 22. Clamping mechanism; 221. Button; 222. Linkage component; 223. Linking rod; 224. Clamping wheel assembly; 2241. Clamping roller; 2242. First mounting base; 2243. First elastic element; 23. Elastic ejection mechanism; 231. Push plate; 232. Second mounting base; 233. Second elastic element; 300. Equipment body. Detailed Implementation

[0034] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The modes described in the following exemplary embodiments do not represent all modes consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0035] like Figure 1As shown, an embodiment of this application provides a medical device, which can be configured as a digital angiography device or other medical device containing a grid structure. The medical device includes a main body 300 and a detector 200 mounted at a preset position on the main body 300. Specifically, to detachably mount the grid 100 onto the detector 200 and ensure a smoother insertion process and more reliable locking after insertion, the medical device employs the grid insertion / removal structure described in the following embodiments.

[0036] like Figure 4 and Figure 5 As shown in the figure, the filter grid plug-in structure provided in the embodiments of this application includes specific features such as... Figure 2 and Figure 3 The filter grid 100 and the frame 21 of the detector 200 are shown in the diagram. Figure 4 As shown by the arrow in the figure, the filter grid 100 is inserted into the frame 21 along the direction of the arrow and is hidden inside the detector 200. Hiding the filter grid 100 inside the frame 21 of the detector 200 avoids direct exposure of the filter grid 100 to the surgical environment, saving the inconvenience of local disinfection.

[0037] See details Figure 2 and Figure 3 As shown, the filter grid 100 includes a filter grid body 11 and a pair of fasteners 13 disposed on the front side of the filter grid body 11 in the insertion direction. A notch 14 is also provided between the fastener 13 and the filter grid body 11. The notch 14 is used to cooperate with the clamping roller 2241 described later to lock the filter grid 100 in a preset position. The specific distance between the two notches 14 is L, and is marked as such. Figure 3 middle.

[0038] Combination Figure 4 , Figure 6 , Figure 8 and Figure 9 As shown, the filter grid insertion and removal structure also includes a clamping mechanism 22 mounted on the frame 21. Corresponding to the arrangement of a pair of clamping fasteners 13, the clamping mechanism 22 includes two sets of clamping wheel assemblies 224 spaced apart. The clamping wheel assembly 224 includes a clamping roller 2241 for engaging in the slot 14, a first mounting seat 2242 for mounting the clamping roller 2241 to the frame 21, and a first elastic member 2243. The clamping roller 2241 is elastically mounted on the first mounting seat 2242 via the first elastic member 2243.

[0039] The first elastic element 2243 is used to push the clamping roller 2241 on one side closer to the clamping roller 2241 on the other side. For example... Figure 3The distance between the two bayonets 14, as indicated by the markings, is L. To ensure reliable clamping, when the clamping rollers 2241 are not under force, the two clamping rollers 2241 are held at a distance less than L by the two first elastic members. Thus, when the filter grid 100 is inserted into the frame body 21, a pair of fasteners 13 can push the two clamping rollers 2241 away from each other and compress the first elastic members 2243. After the fasteners 13 pass the clamping rollers 2241, the elastic force of the first elastic members 2243 can push the two clamping rollers 2241 closer together and elastically lock them into the two bayonets 14.

[0040] To further facilitate the disassembly of the filter grid 100, the clamping mechanism 22 may also include a button 221 that is at least partially exposed on the outer surface of the detector 200, and a linkage component that is linked between the button 221 and the two sets of clamping roller assemblies 224. This linkage component is configured to transmit the downward movement of the button 221 to the two sets of clamping roller assemblies 224, thereby simultaneously causing the two clamping rollers 2241 to move away from each other.

[0041] With this configuration, the user can press the button 221 from the outside of the detector 200, causing the button 221 to move downwards. This, in turn, drives the two locking rollers 2241 away from each other and out of the bayonet 14 through the two sets of linkage components. In this way, the locking relationship between the filter grid 100 and the frame body 21 is released, and the filter grid 100 can be pulled out from the detector 200.

[0042] See details Figures 7 to 9 As shown, the first mounting base 2242 is slidably connected to the frame 21. The linkage assembly may include a linkage member 222 fixedly disposed on the lower end side of the button 221, and two connecting rods 223 rotatably connected at one end to the linkage member 222. The other ends of the two connecting rods 223 are respectively rotatably connected to the two first mounting bases 2242. When the button 221 is pressed down, the linkage member 222 moves downward with the button 221, and drives the two connecting rods 223 to move downward. Figure 7 and Figure 9 The direction of the mark in the middle swings, thereby pushing the two first mounting seats 2242 to slide away from each other, and the locking roller 2241 also moves away from each other along with the first mounting seats 2242.

[0043] like Figure 10 and Figure 11 As shown, the filter grid insertion and removal structure also includes an elastic ejection mechanism 23 mounted on the frame body 21, which is used to push the filter grid 100 outward when the two clamping rollers 2241 are out of the bayonet 14.

[0044] The elastic ejection mechanism 23 includes a second elastic element 233 with one end fixed relative to the frame body 21. When the filter grid 100 is inserted into the frame body 21, the front end of the filter grid 100 pushes against the other end of the second elastic element 233, so that the second elastic element 233 is compressed and accumulates elastic potential energy. When the two clamping rollers 2241 are disengaged from the bayonet 14, the elastic potential energy accumulated by the second elastic element 233 is released, and the direction of its elastic force is away from the direction of insertion of the filter grid 100.

[0045] In some embodiments, the elastic ejection mechanism 23 may further include a push plate 231 and a second mounting base 232. The second mounting base 232 is fixedly disposed on the frame body 21, and both ends of the second elastic member 233 are fixed relative to the second mounting base 232 and the push plate 231, respectively. (See reference) Figure 6 and Figure 7 As shown, when the filter grid 100 is inserted into the frame body 21, the front end of the filter grid 100 pushes against the push plate 231, and the push plate 231 pushes against the end of the second elastic member 233 to achieve compression of the second elastic member 233.

[0046] In some embodiments, the filter grid insertion and removal structure includes two sets of elastic ejection mechanisms 23, which are symmetrically arranged at intervals relative to the filter grid 100 to provide a relatively balanced ejection force to the filter grid 100. Figure 6 and Figure 7 As shown, two sets of elastic ejection mechanisms 23 are disposed on the outside of two sets of clamping wheel assemblies 224.

[0047] like Figure 3 and Figure 6 As shown, the front end of the fastener 13 is provided with a guide ramp 131. When the filter grid 100 is inserted into the frame 21, the guide ramp 131 can gradually push the clamping rollers 2241 away from each other. The guide ramp 131 can guide the two fasteners 13 to pass more smoothly through the area between the two clamping rollers 2241.

[0048] like Figure 9 As shown, the clamping roller 2241 is configured as a rolling bearing capable of rotating about a fixed axis. Thus, when the guide ramp 131 on the clamping member 13 pushes against the clamping roller 2241, the friction between them is rolling friction, making the insertion process of the clamping member 13 smoother.

[0049] Return to reference Figure 2 and Figure 3As shown, the filter grid 100 also includes a front frame 12 detachably fixed to the front side of the filter grid body 11 in the insertion direction, and a fastener 13 is fixedly disposed at the center of the front frame 12 in the width direction. Providing the fastener 13 and other structures on the filter grid body 11 via the front frame 12 not only facilitates the assembly and manufacturing of the overall structure, but also allows the fastener 13 to be replaced by replacing the front frame 12 when it wears out after a period of use, or the front frame 12 can be removed separately for repair.

[0050] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Although this application has disclosed preferred embodiments as above, it is not intended to limit this application. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the technical solution of this application. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of this application without departing from the content of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A wire mesh plug-in structure, comprising a wire mesh (100) and a frame (21) for a detector (200), characterized in that, The filter grid (100) includes a filter grid body (11) and a pair of fasteners (13) disposed on the front side of the filter grid body (11) in the insertion direction. The pair of fasteners (13) are spaced apart, and a bayonet (14) is provided between the fasteners (13) and the filter grid body (11). The filter grid plug-in structure also includes a clamping mechanism (22) mounted on the frame body (21). The clamping mechanism (22) includes two sets of clamping wheel assemblies (224) spaced apart. The clamping wheel assembly (224) includes a clamping roller (2241), a first mounting base (2242), and a first elastic element (2243). The clamping roller (2241) is elastically mounted on the first mounting base (2242) through the first elastic element (2243). When the filter grid (100) is inserted into the frame body (21), a pair of fasteners (13) can push the two clamping rollers (2241) away from each other and compress the first elastic member (2243). After the fasteners (13) pass the clamping rollers (2241), the first elastic member (2243) pushes the two clamping rollers (2241) closer to each other and elastically locks them into the bayonet (14). The clamping mechanism (22) further includes a button (221) that exposes at least part of the outer surface of the detector (200) and a linkage component that is linked between the button (221) and the two sets of clamping wheel assemblies (224). The linkage component is configured to transmit the downward movement of the button (221) to the two sets of clamping wheel assemblies (224) so ​​as to simultaneously drive the two clamping rollers (2241) away from each other and out of the bayonet (14).

2. The filter wire grid plug-in structure according to claim 1, characterized in that, The first mounting base (2242) is slidably connected to the frame body (21); The linkage component includes a linkage member (222) fixedly disposed on the lower side of the button (221), and two connecting rods (223) rotatably connected to the linkage member (222) at one end. The other ends of the two connecting rods (223) are respectively rotatably connected to the two first mounting seats (2242). The linkage member (222) moves downward with the button (221) and can drive the two connecting rods (223) to swing, and respectively push the two first mounting seats (2242) to slide away from each other.

3. The filter wire grid plug-in structure according to claim 1, characterized in that, The filter grid insertion and removal structure also includes an elastic ejection mechanism (23) installed on the frame body (21). The elastic ejection mechanism (23) includes a second elastic element (233) with one end fixed relative to the frame body (21). When the filter grid (100) is inserted into the frame body (21), the front end of the filter grid (100) pushes against the other end of the second elastic element (233) so that the second elastic element (233) is compressed and accumulates elastic potential energy.

4. The filter wire grid plug-in structure according to claim 3, characterized in that, The elastic ejection mechanism (23) further includes a push plate (231) and a second mounting base (232). The second mounting base (232) is fixedly disposed on the frame body (21). The two ends of the second elastic member (233) are fixed relative to the second mounting base (232) and the push plate (231) respectively. When the filter grid (100) is inserted into the frame body (21), the front end of the filter grid (100) pushes against the second elastic member (233) through the push plate (231).

5. The filter wire grid plug-in structure according to claim 3, characterized in that, The filter grid insertion and removal structure includes two sets of elastic ejection mechanisms (23), which are symmetrically arranged at intervals relative to the filter grid (100).

6. The filter grid plug-in structure according to any one of claims 1-5, characterized in that, The front end of the fastener (13) is provided with a guide slope (131). When the filter grid (100) is inserted into the frame body (21), the guide slope (131) can gradually push the clamping rollers (2241) away from each other.

7. The filter wire grid plug-in structure according to any one of claims 1-5, characterized in that, The clamping roller (2241) is configured as a rolling bearing capable of rotating about a fixed axis.

8. The filter wire grid plug-in structure according to any one of claims 1-5, characterized in that, The filter grid (100) also includes a front frame (12) that is detachably fixed to the front side of the filter grid body (11) in the insertion direction, and the fastener (13) is fixedly disposed at the center of the width direction on the front frame (12).

9. A medical device, characterized in that, The medical device includes a device body (300) and a filter grid plug-in structure as described in any one of claims 1-8.

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