Sheath cutting device

Abstract

The application discloses a sheath cutting device, which comprises a cutting part, a supporting part and a control part. The cutting part comprises a blade fixing seat and a cutting blade installed on the blade fixing seat. The supporting part comprises a first supporting part, a second supporting part and a connecting part connecting the first supporting part and the second supporting part. The first supporting part and the second supporting part are arranged at intervals along a first direction and form a cutting gap. At least part of the cutting gap is arranged opposite to the cutting blade along a second direction. The cutting blade is used for entering or moving out of the cutting gap to cut the sheath. At least one of the first supporting part and the second supporting part forms a supporting space matched with a radial dimension of the sheath. The supporting space passes through the cutting gap. The first direction is arranged intersecting the second direction. The control part is arranged on the supporting part and is used for determining an axial cutting position of the sheath. The cutting quality of the sheath can be improved.

Description

Technical Field

[0001] This application belongs to the field of sheath processing technology, and in particular relates to a sheath cutting device. Background Technology

[0002] Medical sheaths are crucial instruments in interventional surgeries, and their performance is closely related to the safety and success rate of the procedure. Medical sheaths typically require cutting before use. Currently, during the cutting process, the sheath is easily deformed by the pressure of the cutting tool, resulting in an uneven cut surface. Furthermore, the precision of the cut length is often difficult to guarantee, severely impacting the quality of the sheath cutting. Utility Model Content

[0003] This application provides a sheath cutting device that can improve the cutting quality of sheaths.

[0004] In a first aspect, embodiments of this application provide a sheath cutting device, including a cutting component, a support component, and a control component. The cutting component includes a blade holder and a cutting blade mounted on the blade holder. The support component includes a first support portion, a second support portion, and a connecting portion connecting the first support portion and the second support portion. The first support portion and the second support portion are spaced apart along a first direction to form a cutting gap. At least a portion of the cutting gap is disposed opposite to the cutting blade along a second direction. The cutting blade is used to enter or exit the cutting gap to cut the sheath. At least one of the first support portion and the second support portion forms a support space that matches the radial dimension of the sheath. The support space passes through the cutting gap. The first direction and the second direction intersect. The control component is disposed on the support component and is used to determine the axial cutting position of the sheath.

[0005] In some embodiments, at least one of the first support portion and the second support portion is provided with a through first fixing hole, the diameter of which matches the outer diameter of the sheath.

[0006] In some embodiments, the first fixing hole is configured to cover the sheath tube circumferentially; or, in the circumferential direction of the first fixing hole, at least one side of the first fixing hole is provided with a first opening, the first opening communicating with the first fixing hole, and the first fixing hole is configured to cover a portion of the sheath tube circumferentially.

[0007] In some embodiments, in a plane perpendicular to the first direction, the orthographic projection of the cutting gap covers the orthographic projection of the first fixing hole.

[0008] In some embodiments, the first support portion has a first fixing hole, and the sheath cutting device further includes a baffle. In a first direction, the baffle is located on the side of the first support portion away from the second support portion. The baffle is disposed opposite to the first fixing hole of the first support portion. The baffle is movably disposed along the first direction and is used to press against one end of the sheath tube along the first direction.

[0009] In some embodiments, the control component includes a scale connected to a support member for measuring the dimension of the sheath along a first direction, and a baffle is disposed on at least one side of the scale; and / or, in the first direction, the dimension of the first support member is smaller than the dimension of the second support member.

[0010] In some embodiments, a first support portion and / or a second support portion are used to support the sheath from within the sheath, and a connecting portion is located between the first support portion and the second support portion; the cutting element is configured to cut the sheath circumferentially along the sheath.

[0011] In some embodiments, in the first direction, at least one side of the cutting gap is provided with a guide surface, the guide surface being parallel to the second direction, the guide surface being used to fit against the cutting blade to guide the cutting blade.

[0012] In some embodiments, the blade holder is rotatably configured about a second axis to drive the cutting blade to cut at least a portion of the sheath during rotation. The second axis is configured to extend along a first direction and be offset from the central axis of the sheath.

[0013] In some embodiments, the cutting member further includes an elastic reset member connected to the blade holder and spaced apart from the second axis along a third direction. The elastic reset member is used to drive the blade holder to move away from the support member in a non-cutting state. The first direction, the second direction, and the third direction intersect each other.

[0014] In some embodiments, the cutting member further includes a blade holder, which includes a slide rail and a slider slidably disposed on the slide rail. The cutting blade is disposed on the slider and is used to slide along the extension direction of the slide rail under the action of the slider. The extension directions of the slide rail intersect a first direction and a second direction respectively. Along the direction from one end of the slide rail to the other end, the slide rail is inclined to the side away from the support member. The cutting blade is used to cut at least a portion of the sheath tube during translation along the extension direction.

[0015] This application provides a sheath cutting device, including a cutting component, a support component, and a control component. The cutting component includes a blade holder and a cutting blade mounted on the blade holder. The support component includes a first support portion, a second support portion, and a connecting portion connecting the first and second support portions. The first and second support portions are spaced apart along a first direction to form a cutting gap. At least a portion of the cutting gap is positioned opposite to the cutting blade along a second direction. The cutting blade can move in and out of the cutting gap along the second direction to cut the sheath. During the cutting process, at least one of the first and second support portions forms a support space adapted to the radial dimension of the sheath, and this support space passes through the cutting gap. At least one of the first and second support portions can radially position and support the sheath, reducing the risk of deformation of the sheath during the cutting process and resulting in an uneven cutting surface, thus helping to improve the cutting quality of the sheath. Simultaneously, since the support space formed by the support component matches the radial dimension of the sheath, the support component can stably support the sheath and facilitate the removal of the cut sheath from the support component. Furthermore, during the cutting process, the sheath tube only passes through the first and second support sections, resulting in a small number of components forming the support space, which simplifies assembly and disassembly. Finally, the control component is located on the support member. During sheath tube cutting, the control component can be used to perform axial fixed-length cutting of the sheath tube, thereby improving the cutting accuracy in the length direction and further enhancing the cutting quality. Therefore, this application provides a sheath tube cutting device that is simple in structure, easy to operate, and provides high cutting quality. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of the sheath cutting device provided in some embodiments of this application; Figure 2 This is a partial cross-sectional view of a sheath cutting device provided in some embodiments of this application; Figure 3 This is a partial cross-sectional view of a sheath cutting device provided in other embodiments of this application; Figure 4 yes Figure 1 AA magnified image in the image; Figure 5 This is a schematic diagram of the structure of a sheath cutting device provided in some embodiments of this application.

[0018] Tag name: Sheath cutting device 1000; Sheath 2000; Cutting component 100; Blade holder 110; Base body 111; Operating handle 112; Slide rail 113; Slider 114; Cutting blade 120; Support component 200; First support part 210; Second support part 220; Connecting part 230; Cutting gap 240; First fixing hole 250; Third support part 260; First part 261; Second part 262; Second fixing hole 263; Second opening 264; Control component 300; Scale 310; Baffle 400; Blade support seat 500; First vertical rib 510; Elastic reset component 600; Blade limit seat 700; Limiting beam 710; First direction X; Third direction Y; Second direction Z. Detailed Implementation

[0019] The features and exemplary embodiments of various aspects of this application will now be described in detail. To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain this application and are not configured to limit this application. For those skilled in the art, this application can be implemented without some of these specific details. The following description of the embodiments is merely to provide a better understanding of this application by illustrating examples of this application.

[0020] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes said element.

[0021] To address the relevant technical problems, this application provides a sheath cutting device. The sheath cutting device provided in this application is described below with reference to the accompanying drawings.

[0022] like Figures 1 to 3As shown, this application provides a sheath cutting device 1000, including a cutting component 100, a support component 200, and a control component 300. The cutting component 100 includes a blade holder 110 and a cutting blade 120 mounted on the blade holder 110. The support component 200 includes a first support portion 210, a second support portion 220, and a connecting portion 230 connecting the first support portion 210 and the second support portion 220. The first support portion 210 and the second support portion 220 are spaced apart along a first direction X to form a cutting gap 2. 40. At least a portion of the cutting gap 240 is disposed opposite to the cutting blade 120 along the second direction Z. The cutting blade 120 is used to enter or exit the cutting gap 240 to cut the sheath 2000. At least one of the first support portion 210 and the second support portion 220 forms a support space that matches the radial dimension of the sheath 2000. The support space passes through the cutting gap 240. The first direction X and the second direction Z are intersected. The control component 300 is disposed on the support member 200 and is used to determine the axial cutting position of the sheath 2000.

[0023] The cutting element 100 is used to cut the sheath 2000, severing it to form two separate segments. The cutting element 100 includes a blade holder 110 and a cutting blade 120. The blade holder 110 is used to mount the cutting blade 120 and drive the cutting blade 120 to cut the sheath 2000. In one example, the blade holder 110 can drive the cutting blade 120 to move linearly or arcuately, so that the cutting blade 120 directly cuts the sheath 2000 into two separate segments during the linear or arcuate motion. In another example, the blade holder 110 can drive the cutting blade 120 to make linear or arc-shaped movements, so that the cutting blade 120 cuts into the sheath 2000 during the linear or arc-shaped movements. At the same time, the blade holder 110 can also drive the cutting blade 120 to make circular movements around the sheath 2000, so that the cutting blade 120 cuts the sheath 2000 into two separate tube segments along the circumference of the sheath 2000.

[0024] There are various ways to drive the blade holder 110. For example, the blade holder 110 can be driven by automated equipment such as motors or cylinders, or it can be driven manually. This embodiment of the application describes the manual driving of the blade holder 110 as an example. Optionally, the blade holder 110 may include a base body 111 and an operating handle 112. The cutting blade 120 is mounted on the base body 111, and the operating handle 112 is connected to the base body 111 to drive the base body 111 and the corresponding cutting blade 120 to move.

[0025] The support member 200 supports the sheath 2000 and includes a first support portion 210, a second support portion 220, and a connecting portion 230. The connecting portion 230 connects the first support portion 210 and the second support portion 220. The connecting portion 230 can be located between the first support portion 210 and the second support portion 220. Both ends of the connecting portion 230 can be connected to the end faces of the first support portion 210 and the second support portion 220 along a first direction X, respectively. In this case, the first support portion 210 and the second support portion 220 can protrude relative to the side of the connecting portion 230, forming a cutting gap 240 on the side of the connecting portion 230. Alternatively, both ends of the connecting portion 230 can also be connected to the side faces of the first support portion 210 and the second support portion 220, respectively.

[0026] The first support portion 210 and the second support portion 220 are spaced apart along the first direction X to form a cutting gap 240. When the sheath 2000 is installed in at least one of the first support portion 210 and the second support portion 220, the part of the sheath 2000 to be cut can cover the opening of the cutting gap 240 or be located in the cutting gap 240. At least a portion of the cutting gap 240 is disposed opposite to the cutting blade 120 along the second direction Z. The cutting edge of the cutting blade 120 can be directed toward the cutting gap 240 along the second direction Z. Therefore, when the cutting blade 120 moves in and out of the cutting gap 240 under the drive of the blade holder 110, the cutting edge of the cutting blade 120 can cut the part of the sheath 2000 to be cut. At the same time, at least one of the first support portion 210 and the second support portion 220 can support the sheath 2000 to reduce the risk of the sheath 2000 being deformed due to the pressure of the cutting blade 120 on the part to be cut, thereby resulting in an uneven cutting surface. This helps to improve the cutting quality of the sheath 2000.

[0027] In the embodiments of this application, the first direction X and the second direction Z can be two intersecting directions, preferably two mutually perpendicular directions. For example, the first direction X can be the thickness direction of the cutting blade 120, and the second direction Z can be the height direction of the cutting blade 120. When the sheath 2000 is installed on the support 200, the first direction X can be the axial direction of the sheath 2000, and the second direction Z can be one of the radial directions of the sheath 2000.

[0028] Optionally, the width of the cutting gap 240 along the first direction X can be slightly greater than the thickness of the cutting blade 120 along the first direction X. While ensuring that the cutting blade 120 can enter and exit the cutting gap 240, the distance between at least one of the first support portion 210 and the second support portion 220 and the part of the sheath 2000 to be cut in the first direction X can be reduced, so as to further reduce the risk of the part of the sheath 2000 to be cut being deformed by pressure during the cutting process.

[0029] At least one of the first support portion 210 and the second support portion 220 can form a support space that matches the radial dimension of the sheath 2000, at which the sheath 2000 is mounted. The support space passes through the cutting gap 240, so the portion of the sheath 2000 to be cut, mounted in the support space, can cover the opening of the cutting gap 240 or be located within the cutting gap 240.

[0030] There are multiple ways to support the sheath tube 200 with the support member 2000.

[0031] In one example, such as Figure 2 As shown, the first support portion 210 and the second support portion 220 can simultaneously have first fixing holes 250 extending along the first direction X and arranged opposite to each other. The first fixing holes 250 are the support spaces. The sheath tube 2000 can pass through the first fixing holes 250 of the first support portion 210 and the second support portion 220 in sequence, so that the part to be cut is located in the cutting gap 240. At this time, the first support portion 210 and the second support portion 220 both support the sheath tube 2000 from the outside.

[0032] In another example, the first support portion 210 may have a first fixing hole 250, which can be a support space corresponding to the first support portion 210. The sheath 2000 can pass through the first fixing hole 250 of the first support portion 210, with a portion located inside the first fixing hole 250 and the other portion wrapped around the outer periphery of the second support portion 220. In this case, the circumferential space of the second support portion 220 can be the corresponding support space. The part of the sheath 2000 to be cut can be located in the cutting gap 240 between the first support portion 210 and the second support portion 220. In this case, the first support portion 210 supports the sheath 2000 from the outside, and the second support portion 220 supports the sheath 2000 from the inside.

[0033] In yet another example, such as Figure 3 As shown, both the first support portion 210 and the second support portion 220 can support the sheath tube 2000 from inside the sheath tube 2000, and the circumferential space of the first support portion 210 and the circumferential space of the second support portion 220 can form corresponding support spaces.

[0034] It should be noted that when the first fixing hole 250 serves as a support space, the inner diameter of the first fixing hole 250 can match the outer diameter of the sheath 2000. For example, the inner diameter of the first fixing hole 250 can be equal to or slightly larger than the outer diameter of the sheath 2000. The difference between the inner diameter of the first fixing hole 250 and the outer diameter of the sheath 2000 can fluctuate within a certain range, thereby facilitating the assembly and disassembly of the sheath 2000 within the first fixing hole 250. When the circumferential space of the first support portion 210 and / or the second support portion 220 serves as a support space, the outer diameter of the sheath 2000 can be equal to or slightly larger than the outer diameter of the first support portion 210 and / or the second support portion 220. The difference between the outer diameter of the sheath 2000 and the outer diameter of the first support portion 210 and / or the second support portion 220 can fluctuate within a certain range, thereby facilitating the assembly and disassembly of the sheath 2000 within the first fixing hole 250.

[0035] The control component 300 is used to determine the axial cutting position of the sheath 2000. Exemplarily, the control component 300 can be used to detect the cutting length of the sheath 2000, that is, to determine the distance from the axial cutting position of the sheath 2000 to one end of the sheath 2000. The control component 300 is disposed on the support member 200 and can be connected to the first support portion 210 and / or the second support portion 220. Alternatively, the control component 300 can also be connected to other parts of the support member 200; this embodiment does not limit this. The control component 300 can be an automatic testing device such as an infrared measuring instrument or a laser measuring instrument, or it can be a manual testing device such as a ruler 310. This embodiment uses a ruler 310 as an example for illustration.

[0036] In the sheath tube cutting device 1000 provided in this application embodiment, the cutting member 100 includes a blade fixing seat 110 and a cutting blade 120 installed on the blade fixing seat 110; the support member 200 includes a first support portion 210, a second support portion 220 and a connecting portion 230 connecting the first support portion 210 and the second support portion 220. The first support portion 210 and the second support portion 220 are spaced apart along the first direction X to form a cutting gap 240. At least a portion of the cutting gap 240 is arranged opposite to the cutting blade 120 along the second direction Z. The cutting blade 120 can enter and exit the cutting gap 240 along the second direction Z to cut the sheath tube 2000. During the cutting process, at least one of the first support portion 210 and the second support portion 220 forms a support space adapted to the diameter of the sheath tube 2000, and the support space passes through the cutting gap 240. At least one of the first support portion 210 and the second support portion 220 can radially position and support the sheath 2000 in the support space, reducing the risk of deformation of the sheath 2000 during the cutting process and resulting in an uneven cut surface, thus helping to improve the cutting quality of the sheath 2000. Simultaneously, since the support space formed by the support member 200 matches the radial dimension of the sheath 2000, the support member 2000 can stably support the sheath 2000 and facilitates the removal of the cut sheath 2000 from the support member. Furthermore, during the cutting process, the sheath 2000 only passes through the first support portion 210 and the second support portion 220, resulting in a small number of components forming the support space, simplifying assembly and disassembly. Furthermore, the control component 300 is disposed on the support member 200. During the cutting of the sheath tube 2000, the control component 300 can be used to perform axial fixed-length cutting of the sheath tube 2000, thereby improving the cutting accuracy of the sheath tube 2000 in the length direction and further enhancing the cutting quality of the sheath tube 2000. Therefore, this application provides a sheath tube cutting device 1000 that is simple in structure, easy to operate, and provides high cutting quality.

[0037] like Figure 2 As shown, in some embodiments, at least one of the first support portion 210 and the second support portion 220 is provided with a through first fixing hole 250. The diameter of the first fixing hole 250 matches the outer diameter of the sheath tube 2000. The first fixing hole 250 can be a corresponding support space to provide radial positioning and support for the sheath tube 2000. The first fixing hole 250 supports the sheath tube 2000 from the outside, which helps to reduce the installation difficulty of the sheath tube 2000.

[0038] Furthermore, when one of the first support portion 210 and the second support portion 220 supports the sheath 2000 from the outside, the blade holder 110 only needs to drive the cutting blade 120 in and out of the cutting gap 240 to cut the sheath 2000 into two separate tube segments without needing to perform circumferential motion. This helps to reduce the cutting difficulty of the sheath 2000, improve the cutting efficiency of the sheath 2000, and also helps to simplify the structure of the cutting piece 100.

[0039] It should be noted that, in this embodiment, both the first support portion 210 and the second support portion 220 may have a first fixing hole 250, or one of the first support portion 210 and the second support portion 220 may have a first fixing hole 250 while the other may not have a first fixing hole 250. The one without a first fixing hole 250 may support the sheath tube 2000 from inside. The first fixing hole 250 may be a hole extending linearly along the first direction X, or it may be a hole extending in multiple directions with bends. This embodiment does not limit this.

[0040] In some embodiments, the first fixing hole 250 is configured to cover the sheath 2000 circumferentially.

[0041] The inner contour shape of the first fixing hole 250 can be adapted to the outer contour shape of the sheath 2000. For example, when the sheath 2000 is a circular tube, the first fixing hole 250 can be a circular hole. The first fixing hole 250 is arranged around the circumference of the sheath 2000 to cover the sheath 2000, thereby more stably restricting the position of the sheath 2000 and improving the stability of the sheath 2000.

[0042] In other embodiments, a first opening is provided on at least one side of the first fixing hole 250 in the circumferential direction of the first fixing hole 250. The first opening communicates with the first fixing hole 250. The first fixing hole 250 is configured to cover a portion of the sheath 2000 in the circumferential direction of the sheath 2000, and another portion of the sheath 2000 in the circumferential direction may be exposed through the first opening.

[0043] In one example, when the sheath 2000 is assembled into the first fixing hole 250, the sheath 2000 can directly enter the first fixing hole 250 through the first opening, which facilitates the assembly of the sheath 2000.

[0044] In another example, when assembling the sheath 2000 into the first fixing hole 250, the sheath 2000 can be inserted from one end of the first fixing hole 250 and moved to the other end of the first fixing hole 250. During this movement, the setting of the first opening can reduce the friction of the inner wall of the first fixing hole 250 on the sheath 2000, thereby reducing the assembly difficulty of the sheath 2000 and the amount of wear of the sheath 2000.

[0045] It is known that the area of ​​the first opening can be flexibly set according to the actual situation, and the inner contour shape of the first fixing hole 250 can be adapted to the outer contour shape of the sheath 2000.

[0046] Optionally, along the circumference of the sheath 2000, the central angle of the two ends of the first fixing hole 250 near the first opening can be approximately 120°~240°. On the one hand, this can improve the positioning and support effect of the inner wall of the first fixing hole 250 on the sheath 2000, and on the other hand, it can help reduce the difficulty of assembling and disassembling the sheath 2000 in the first fixing hole 250.

[0047] For example, when the sheath 2000 is a circular tube, the first fixing hole 250 can be a semi-circular hole, and the central angles at both ends of the first fixing hole 250 are approximately 180°.

[0048] In some embodiments, in a plane perpendicular to the first direction X, the orthographic projection of the cutting gap 240 covers the orthographic projection of the first fixing hole 250. In the second direction Z, the side of the cutting gap 240 away from the cutting blade 120 may be flush with the side of the first fixing hole 250 away from the cutting blade 120, or the side of the cutting gap 240 away from the cutting blade 120 may protrude from the side of the first fixing hole 250 away from the cutting blade 120, so as to ensure the cutting effect of the cutting blade 120 on the part of the sheath 2000 to be cut.

[0049] Optionally, in the second direction Z, the side of the cutting gap 240 away from the cutting blade 120 may protrude from the side of the first fixing hole 250 away from the cutting blade 120. Therefore, while ensuring the cutting effect of the cutting blade 120 on the part to be cut of the sheath 2000, the risk of interference between the cutting blade 120 and other structures of the cutting gap 240 in the second direction Z away from the cutting blade 120 is reduced, which helps to improve the service life of the cutting blade 120.

[0050] like Figure 1As shown, in some embodiments, the first support portion 210 has a first fixing hole 250, and the sheath cutting device 1000 also includes a baffle 400. In the first direction X, the baffle 400 is located on the side of the first support portion 210 away from the second support portion 220. The baffle 400 is disposed opposite to the first fixing hole 250 of the first support portion 210. The baffle 400 is movably disposed along the first direction X and is used to press against one end of the sheath 2000 along the first direction X.

[0051] Specifically, the portion of the sheath 2000 installed in the first support portion 210 can extend from the side of the first support portion 210 away from the second support portion 220 along the first direction X after passing through the first fixing hole 250 of the first support portion 210, and extend to the side of the first support portion 210 away from the second support portion 220 along the first direction X. The baffle 400 can press against the corresponding end face of the sheath 2000 on this side to limit the sheath 2000 from the end face of the sheath 2000, which helps to improve the stability of the sheath 2000 during the cutting process and further improves the cutting quality of the sheath 2000.

[0052] The baffle 400 can be mounted on the support member 200, or it can be mounted on other structures of the sheath cutting device 1000. The baffle 400 can move in various ways. For example, the baffle 400 can be moved along the first direction X by the cooperation of a slide rail and a slider; or the baffle 400 can be moved along the first direction X by means of a driving device such as a cylinder or hydraulic cylinder.

[0053] like Figure 1 As shown, in some embodiments, the control component 300 includes a scale 310 connected to the support 200 for measuring the dimension of the sheath 2000 along a first direction X, and a baffle 400 is disposed on at least one side of the scale 310.

[0054] The scale 310 can be located along the first direction X on the side of the first support 210 away from the second support 220, and is used to measure the length of the portion of the sheath 2000 extending from the first support 210 along the first direction X away from the second support 220.

[0055] In this embodiment, using a ruler 310 to measure the dimensions of the sheath 2000 along the first direction X helps reduce the production cost of the sheath cutting device 1000. Furthermore, a baffle 400 is disposed on at least one side of the ruler 310, which not only limits the end of the sheath 2000 but also serves as a pointer to the ruler 310, assisting in measuring the cutting length of the sheath 2000 and improving measurement accuracy.

[0056] Optionally, the scale 310 may extend along the first direction X. Optionally, the scale 310 may have multiple graduations arranged along the first direction X, with the graduation closest to the first support 210 being the first graduation. The difference between the value of the first graduation and the distance between the first graduation and the cutting edge of the cutting blade 120 in the first direction X is 0. At this time, the cutting edge of the cutting blade 120 is equivalent to being aligned with the zero graduation of the scale 310 in the second direction Z, thereby helping to improve the accuracy of the scale 310 in measuring the cutting length of the sheath 2000.

[0057] In some embodiments, the size of the first support portion 210 is smaller than the size of the second support portion 220 in the first direction X. Since a baffle 400 is provided on the side of the first support portion 210 away from the second support portion 220, the baffle 400 can assist the first support portion 210 in limiting the sheath tube 2000. Therefore, while ensuring the reliability and stability of the support for the sheath tube 2000, the embodiments of this application can reduce the size of the first support portion 210 in the first direction X, which helps to reduce the volume of the support member 200 and reduce the production cost of the sheath tube cutting device 1000.

[0058] like Figure 1 and Figure 4 As shown, in some embodiments, the support member 200 further includes a third support portion 260, which is disposed on the side of the first support portion 210 away from the second support portion 220 along the first direction X. The third support portion 260 includes a first portion 261 and a second portion 262. The first portion 261 is connected between the first support portion 210 and the second portion 262. The first portion 261 forms a second fixing hole 263 extending along the first direction X and a second opening 264 communicating with the second fixing hole 263 from the side. The second fixing hole 263 protrudes along the second direction Z from the side of the second portion 262 near the cutting blade 120 along the second direction Z. A portion of the scale 310 is fixed to the side of the second portion 262 near the cutting blade 120 along the second direction Z, and the other portion is located in the second fixing hole 263 and exposed in the second opening 264.

[0059] The third support portion 260 is used to support structures such as the scale 310 and the baffle 400. The third support portion 260 includes a first portion 261 and a second portion 262. In the first direction X, the first portion 261 is located on the side of the first support portion 210 away from the second support portion 220. The first portion 261 can be integrally formed with the first support portion 210, or the first portion 261 can be connected to the first support portion 210 by bolts or other structures.

[0060] The first part 261 has a second fixing hole 263 that can penetrate the first part 261 along the first direction X. A portion of the scale 310 can be installed in the second fixing hole 263. The scale 310 can be limited by the inner wall of the second fixing hole 263. At this time, the end of the scale 310 near the first support 210 along the first direction X can press against the side of the first support 210 away from the second support 220 along the first direction X. The first part 261 also has a second opening 264 located on the side of the second fixing hole 263 and communicating with the second fixing hole 263 from the side. The second opening 264 can expose at least a portion of the second fixing hole 263. When the scale 310 is installed in the second fixing hole 263, the second opening 264 can expose at least a portion of the scale corresponding to the portion of the scale 310 located in the second fixing hole 263.

[0061] Optionally, the second opening 264 can penetrate the first portion 261 along the second direction Z, and connect to the second fixing hole 263 along the second direction Z near the cutting blade 120. When the sheath 2000 is installed on the support member 200, at least a portion of the sheath 2000 extending from the first support portion 210 along the first direction X away from the second support portion 220 can be located in the second opening 264.

[0062] The second part 262 is located on the side of the first part 261 away from the first support part 210 along the first direction X. The second part 262 can be integrally formed with the first part 261, or the second part 262 can be connected to the first part 261 by bolts or other structures. The second fixing hole 263 protrudes from the side of the second part 262 along the second direction Z that is close to the cutting blade 120. At this time, the bottom surface of the second fixing hole 263 away from the cutting blade 120 along the second direction Z can be flush with the surface of the second part 262 close to the cutting blade 120 along the second direction Z. Therefore, when a part of the scale 310 is installed in the second fixing hole 263, the other part of the scale 310 extending from the second fixing hole 263 can be fixed to the side of the second part 262 close to the cutting blade 120 along the second direction Z, thereby using the second part 262 to further support the scale 310 and improve the stability of the scale 310.

[0063] Optionally, the baffle 400 can be connected to the second part 262 and is movably disposed relative to the second part 262 and the scale 310 along the first direction X. Exemplarily, the second part 262 may have a groove extending along the first direction X, the groove being located on one side of the scale 310 along a third direction Y, which may intersect or even be perpendicular to the first direction X and the second direction Z. The baffle 400 may include a baffle 400 body and a sliding part. The baffle 400 body may be located on the side of the scale 310 away from the second part 262 along the second direction Z, and is disposed opposite to the first fixing hole 250 of the first support part 210 in the first direction X, for pressing one end of the sheath tube 2000. The sliding part is engaged in the groove to be slidably disposed relative to the groove along the first direction X.

[0064] like Figure 3 As shown, in some embodiments, the first support portion 210 and / or the second support portion 220 are used to support the sheath 2000 from within the sheath 2000, which helps to further reduce the risk of deformation of the sheath 2000 during the cutting process. The connecting portion 230 is located between the first support portion 210 and the second support portion 220; the cutting member 100 is configured to cut the sheath 2000 circumferentially.

[0065] In one example, when the sheath 2000 is installed on the support 200, the blade holder 110 can drive the cutting blade 120 to move in a circular motion around the circumference of the sheath 2000, so as to cut the sheath 2000 around the circumference of the sheath 2000 and cut the sheath 2000 into two separate tube segments.

[0066] In another example, the support member 200 is rotatable about a first axis. When the sheath tube 2000 is installed on the support member 200, the first axis can coincide with the central axis of the sheath tube 2000. The support member 200 can drive the sheath tube 2000 to rotate so that the cutting blade 120 cuts the sheath tube 2000 circumferentially during the rotation of the support member 200 and the sheath tube 2000. That is, the sheath tube 2000 is cut into two separate tube segments by the cutting blade 120 during the rotation.

[0067] In some embodiments, at least one side of the cutting gap 240 is provided with a guide surface in the first direction X, the guide surface being parallel to the second direction Z. The guide surface is used to fit against the cutting blade 120 to guide the cutting blade 120. This guide surface is a side wall of the cutting gap 240, which can fit against the cutting blade 120 during the cutting process and guide the cutting blade 120, so that the cutting blade 120 cuts the sheath tube 2000 along the extension direction of the guide surface. This helps to improve the stability of the cutting blade 120 during the cutting process, thereby further improving the cutting quality of the sheath tube 2000.

[0068] It is known that in the non-cutting state of the sheath cutting device 1000, a portion of the cutting blade 120 may be located within the cutting gap 240 and in contact with the guide surface; or, the cutting blade 120 may be located outside the cutting gap 240 and separated from the guide surface.

[0069] Optionally, in the first direction X, the other side wall of the cutting gap 240, which is opposite to the guide surface, can be spaced apart from the cutting blade 120 to reduce the frictional wear of the cutting blade 120 during movement and help to improve the service life of the cutting blade 120.

[0070] like Figure 1 As shown, in some embodiments, the blade holder 110 is rotatably configured about a second axis to drive the cutting blade 120 to cut at least a portion of the sheath 2000 during rotation. The second axis is configured to extend along a first direction X and is offset from the central axis of the sheath 2000.

[0071] Specifically, the cutting blade 120 is located on one side of the cutting gap 240 along the second direction Z, with its cutting edge facing the cutting gap 240. When the sheath 2000 is installed on the support 200 and the part of the sheath 2000 to be cut is correspondingly set with the cutting gap 240, the cutting blade 120 is driven to rotate around the second axis by the blade fixing seat 110. This allows the cutting blade 120 to enter and exit the cutting gap 240 during rotation, so as to cut the part of the sheath 2000 to be cut. This helps to improve the stability of the cutting blade 120 during movement, and thus helps to improve the cutting quality of the sheath 2000.

[0072] It should be noted that when both the first support portion 210 and the second support portion 220 support the sheath 2000 from inside the sheath 2000, and the connecting portion 230 is located between the first support portion 210 and the second support portion 220, the cutting blade 120 can be rotated around the second axis by the blade fixing seat 110, so that the cutting blade 120 cuts into the sheath 2000. Then, the cutting blade 120 can be rotated around the circumference of the sheath 2000 by the blade fixing seat 110, or the sheath 2000 can be rotated around the first axis by the support member 200, so that the cutting blade 120 cuts the sheath 2000 into two separate tube segments along the circumference of the sheath 2000.

[0073] like Figure 1As shown, optionally, the sheath cutting device 1000 may also include a blade support 500. The blade support includes a rotating shaft (not shown) and two first vertical ribs 510. The two first vertical ribs 510 are arranged at intervals along a first direction X. The rotating shaft is disposed between the two first vertical ribs 510. The second axis can be the central axis of the rotating shaft. The blade fixing seat 110 is rotatably disposed on the rotating shaft, so that the cutting blade 120 can be driven to rotate around the second axis through the blade fixing seat 110.

[0074] like Figure 1 As shown, in some embodiments, the cutting member 100 further includes an elastic reset member 600. The elastic reset member 600 is connected to the blade holder 110 and is spaced apart from the second axis along the third direction Y. The elastic reset member 600 is used to drive the blade holder 110 to move in a direction away from the support member 200 in the non-cutting state. The first direction X, the second direction Z and the third direction Y intersect each other.

[0075] Specifically, during the process of the blade holder 110 driving the cutting blade 120 to rotate and enter the cutting gap 240 by external force, the elastic reset member 600 can deform. After the cutting blade 120 completes the cutting of the sheath 2000 and the external force is removed, the elastic reset member 600 can restore its deformation. The elastic force generated by it can push the blade holder 110 to reset in a direction away from the support member 200, so that at least part of the cutting blade 120 moves out of the cutting gap 240.

[0076] There are various connection positions for the end of the elastic reset member 600 away from the blade holder 110. For example, this end can be connected to the support member 200, or it can be connected to other structures of the sheath cutting device 1000. This embodiment does not limit this.

[0077] In this embodiment, an elastic reset member 600 is provided to push the blade holder 110 to move away from the support member 200 after the sheath tube 2000 is cut, so that the blade holder 110 drives the cutting blade 120 to automatically reset, thus eliminating the need for manual reset, which helps to simplify the cutting steps of the sheath tube 2000 and improve cutting efficiency.

[0078] like Figure 1 As shown, in some embodiments, the cutting member 100 further includes a blade limiting seat 700, which includes a limiting beam 710. The limiting beam 710 is spaced apart from the second axis along the third direction Y and spaced apart from the support member 200 along the second direction Z. A portion of the blade fixing seat 110 is located between the limiting beam 710 and the support member 200. The limiting beam 710 is used to limit the blade fixing seat 110 when it moves to the initial position in a direction away from the support member 200, so as to improve the stability of the blade fixing seat 110 and the cutting blade 120 after resetting.

[0079] Optionally, the blade limiting seat 700 may also include two oppositely arranged second vertical ribs, and the two ends of the limiting beam 710 are respectively connected to the two second vertical ribs so as to support the limiting beam 710 by means of the second vertical ribs.

[0080] Optionally, the second vertical rib may be connected to the support member 200.

[0081] like Figure 5 As shown, in some embodiments, the blade holder 110 includes a slide rail 113 and a slider 114 slidably disposed on the slide rail 113. The cutting blade 120 is disposed on the slider 114 and is used to slide along the extension direction of the slide rail 113 under the drive of the slider 114. The extension directions of the slide rail 113 intersect the first direction X and the second direction Z respectively. Along the direction from one end of the slide rail 113 to the other end, the slide rail 113 is inclined to the side away from the support member 200. The cutting blade 120 is used to cut at least a portion of the sheath tube 2000 during the translation along the extension direction.

[0082] Specifically, the slide rail 113 is inclined to the side away from the support member 200 along the direction from one end of the slide rail 113 to the other end. Therefore, when the cutting blade 120 is installed on the slide rail 113, the cutting edge of the cutting blade 120 can be inclined to the side away from the support member 200 along the direction from one end of the slide rail 113 to the other end.

[0083] After the sheath 2000 is installed on the support 200, the slider 114 drives the cutting blade 120 to move along the extension direction of the slide rail 113. During this process, the relative position of the cutting blade 120 in the extension direction of the slide rail 113 and in the second direction Z changes. The cutting blade 120 can not only apply a longitudinal cutting force transmitted along the second direction Z to the sheath 2000, but also apply an oblique cutting force transmitted along the extension direction of the slide rail 113 to the sheath 2000. This helps to reduce the difficulty of the cutting blade 120 cutting the sheath 2000 and improve the cutting efficiency and cutting quality of the sheath 2000.

[0084] The above description is merely a specific implementation of this application. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, modules, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here. It should be understood that the protection scope of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the protection scope of this application.

Claims

1. A sheath cutting device, characterized in that, include: A cutting component, including a blade holder and a cutting blade mounted on the blade holder; The support includes a first support portion, a second support portion, and a connecting portion connecting the first support portion and the second support portion. The first support portion and the second support portion are spaced apart along a first direction to form a cutting gap. At least a portion of the cutting gap is disposed opposite to the cutting blade along a second direction. The cutting blade is used to enter or exit the cutting gap to cut the sheath. At least one of the first support portion and the second support portion forms a support space that matches the radial dimension of the sheath, the support space passing through the cutting gap, and the first direction and the second direction are intersecting; A control component, disposed on the support member, is used to determine the axial cutting position of the sheath.

2. The sheath cutting device according to claim 1, characterized in that, At least one of the first support portion and the second support portion is provided with a through first fixing hole, the diameter of which matches the outer diameter of the sheath.

3. The sheath cutting device according to claim 2, characterized in that, The first fixing hole is configured to cover the sheath circumferentially; or, In the circumferential direction of the first fixing hole, at least one side of the first fixing hole is provided with a first opening, the first opening communicating with the first fixing hole, and the first fixing hole is configured to cover a portion of the sheath tube in the circumferential direction of the sheath tube.

4. The sheath cutting device according to claim 2, characterized in that, In a plane perpendicular to the first direction, the orthographic projection of the cutting gap overlaps the orthographic projection of the first fixing hole.

5. The sheath cutting device according to claim 2, characterized in that, The first support portion has the first fixing hole, and the sheath cutting device further includes a baffle. In the first direction, the baffle is located on the side of the first support portion away from the second support portion. The baffle is disposed opposite to the first fixing hole of the first support portion. The baffle is movable along the first direction and is used to press against one end of the sheath in the first direction.

6. The sheath cutting device according to claim 5, characterized in that, The control component includes a scale connected to the support member for measuring the dimension of the sheath tube along the first direction, and the baffle is disposed on at least one side of the scale. And / or, In the first direction, the size of the first support portion is smaller than the size of the second support portion.

7. The sheath cutting device according to claim 1, characterized in that, The first support portion and / or the second support portion are used to support the sheath tube from inside the sheath tube, and the connecting portion is located between the first support portion and the second support portion; The cutting element is configured to cut the sheath circumferentially.

8. The sheath cutting device according to any one of claims 1-7, characterized in that, In the first direction, at least one side of the cutting gap is provided with a guide surface, the guide surface being parallel to the second direction, the guide surface being used to fit against the cutting blade to guide the cutting blade.

9. The sheath cutting device according to any one of claims 1-7, characterized in that, The blade holder is rotatably configured about a second axis to drive the cutting blade to cut at least a portion of the sheath during rotation. The second axis is configured to extend along the first direction and is offset from the central axis of the sheath.

10. The sheath cutting device according to claim 9, characterized in that, The cutting component further includes an elastic reset component, which is connected to the blade holder and spaced apart from the second axis along a third direction. The elastic reset component is used to drive the blade holder to move away from the support component in a non-cutting state. The first direction, the second direction, and the third direction intersect each other.

11. The sheath cutting device according to any one of claims 1-7, characterized in that, The blade holder includes a slide rail and a slider slidably disposed on the slide rail. The cutting blade is disposed on the slider and is used to slide along the extension direction of the slide rail under the drive of the slider. The extension directions of the slide rail intersect the first direction and the second direction respectively. The slide rail is inclined away from the support member in a direction from one end to the other, and the cutting blade is used to cut at least a portion of the sheath during translation along the extension direction.

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