Multi-angle outer knife tube and tissue crusher
By designing a convex nozzle structure and multiple processing reference surfaces on the multi-angled outer blade of the tissue shredder, the problems of inner blade detachment and deformation are solved, achieving higher stability and cutting efficiency, and reducing damage rate and risk of damage to healthy tissue.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2026-04-10
AI Technical Summary
In existing tissue shredders, the inner blade is prone to radial movement and deformation or detachment at the window of the outer blade, resulting in poor stability, high damage rate, and risk of damage to healthy tissue.
A multi-angle outer blade tube is designed. By forming a convex nozzle structure at the round head, multiple machining reference surfaces are used to limit the inner blade tube in the radial direction, increasing the contact area and forming a sharper cutting edge, reducing the phenomenon of inner blade tube detachment, and improving stability and cutting efficiency.
It enhances the operational stability of the tissue shredder, reduces the damage rate, minimizes the risk of damage to healthy tissue, and improves cutting efficiency.
Smart Images
Figure CN224099426U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to medical equipment technical field especially, and relates to a multi-angle outer sword pipe and tissue pulverizer. BACKGROUND
[0002] Tissue pulverizer is a high-performance general surgical tool, has the advantages such as suction unobstructed, convenient cleaning, quick installation and full waterproof design. Tissue pulverizer is mostly composed of two sleeve pipes stacked together, two sleeve pipes all have window, after the tissue is sucked or pressed into the window, the fixed outer sword pipe and the rotating inner sword pipe are cut in the window, the debris is sucked out by aspirator, to reach the cutting purpose.
[0003] However, in the existing tissue pulverizer, the inner sword pipe often moves radially, and the window of the outer sword pipe deforms, separates and other phenomena, resulting in poor use stability of the tissue pulverizer, high damage rate, and easy to cause damage risk to healthy tissue.
[0004] Therefore, a multi-angle outer sword pipe and tissue pulverizer are needed to solve the above technical problems. UTILITY MODEL CONTENTS
[0005] One purpose of the utility model is to provide a multi-angle outer sword pipe and tissue pulverizer, which can reduce the phenomenon that the inner sword pipe separates from the outer sword pipe, improve the stability during pulverization, and reduce the damage rate.
[0006] To achieve this purpose, the utility model adopts the following technical solutions:
[0007] The multi-angle outer sword pipe comprises a straight pipe part and a round head part, the round head part is connected to the end of the straight pipe part, the multi-angle outer sword pipe is further provided with a first window, the inner cavity of the multi-angle outer sword pipe can be exposed through the first window, and
[0008] The convex mouth structure is formed in the round head part, and the convex mouth structure is used for wrapping the inner sword pipe to limit the inner sword pipe in the radial direction of the straight pipe part.
[0009] Preferably, the multi-angle outer sword pipe is configured to remove part of material at the end along at least two machining reference surfaces to form the first window, along the direction from the other end of the multi-angle outer sword pipe to the first window, the distance between the machining reference surface and the axis of the multi-angle outer sword pipe is arranged from large to small, the at least two machining reference surfaces pass through the straight pipe part and the round head part at the same time, and both intersect with the axis of the multi-angle outer sword pipe outside the multi-angle outer sword pipe to form the convex mouth structure.
[0010] Preferably, the at least two machining reference surfaces are symmetrically arranged about a preset reference surface.
[0011] As preferably, the multi-angle outer cutter tube is configured to remove part of material along even number of the machining reference surfaces at the end portion to form the first window, an outer wall surface of the first window is formed with a middle ridge, the middle ridge coincides with the preset reference surface,
[0012] An included angle m between the middle ridge and an axis of the multi-angle outer cutter tube is 6°, and along a radial direction of the multi-angle outer cutter tube, a maximum depth dimension n between the middle ridge and the outer peripheral surface is not greater than 1.4 mm.
[0013] As preferably, the multi-angle outer cutter tube is configured to remove part of material along odd number of the machining reference surfaces at the end portion to form the first window, one of the machining reference surfaces is arranged perpendicularly to the preset reference surface and is defined as an intermediate machining reference surface,
[0014] An included angle m between the intermediate machining reference surface and an axis of the multi-angle outer cutter tube is 6°, and a maximum depth dimension n between the intermediate machining reference surface and the outer peripheral surface is not greater than 1.4 mm.
[0015] As preferably, an included angle between any two of the machining reference surfaces is not greater than 20°, and adjacent two of the machining reference surfaces have the same included angle.
[0016] The tissue pulverizer comprises an inner cutter tube and the multi-angle outer cutter tube, the inner cutter tube is rotatably arranged in the outer cutter tube, the outer cutter tube has a first window, the inner cutter tube has a second window, and the first window and the second window can be staggered to perform a pulverizing operation.
[0017] The multi-angle outer cutter tube and the tissue pulverizer have the following beneficial effects: compared with the prior art in which material is removed by only one machining reference surface, a convex nozzle structure can be formed at the round head portion. The convex nozzle structure is convex, can increase the contact area between the inner cutter tube, limit the inner cutter tube along the radial direction of the straight tube portion, reduce the deformation of the inner cutter tube and the phenomenon of the inner cutter tube separating from the first window, thereby improving the stability of the tissue pulverizer during work, reducing the damage rate, and reducing the risk of damage to healthy tissue. Moreover, compared with the prior art in which material is removed by only one machining reference surface, the plurality of machining reference surfaces can make the edge of the first window form a more sharp blade, which is beneficial to improve the cutting efficiency. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 is a perspective view of the multi-angle outer cutter tube obtained along two machining reference surfaces;
[0019] Figure 2 is Figure 1 is a partial enlarged view of A in the middle
[0020] Figure 3 is a sectional view along a longitudinal section of the existing outer tube;
[0021] Figure 4 is a sectional view along a longitudinal section of the multi-angle outer tube obtained along two machining reference surfaces;
[0022] Figure 5 is a comparison of the cutting edges of the existing outer tube and the multi-angle outer tube;
[0023] Figure 6 is an enlarged view of the multi-angle outer tube obtained along four machining reference surfaces;
[0024] Figure 7 is an enlarged view of the multi-angle outer tube obtained along three machining reference surfaces;
[0025] Figure 8 is a sectional view along a longitudinal section of the multi-angle outer tube obtained along three machining reference surfaces.
[0026] In the drawings:
[0027] 10', existing window; 11', existing cutting edge;
[0028] 1, straight tube portion; 2, round head portion; 21, convex nose structure; 22, middle ridge;
[0029] 10, first window; 11, cutting edge. DETAILED DESCRIPTION
[0030] The utility model will be further described in detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the utility model, and are not limited to the utility model. In addition, it should be noted that, in order to facilitate the description, only the part related to the utility model is shown in the drawings, not all structures.
[0031] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or detachably connected, or integrated; it can be mechanically connected, or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0032] In the utility model, unless another definite provision and limitation, first feature is in second feature "on" or "under" can include that first and second features are in direct contact, also can include that first and second features are not in direct contact but contact through other feature between them.Moreover, first feature is in second feature "on", "above" and "upper surface" includes that first feature is in second feature directly above and obliquely above, or just indicates that first feature horizontal height is higher than second feature.First feature is in second feature "under", "below" and "under" includes that first feature is in second feature directly below and obliquely below, or just indicates that first feature horizontal height is less than second feature.
[0033] In the description of the embodiment, the terms "upper", "lower", "right", "left" and other orientation or position relationship are based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the utility model.In addition, the terms "first", "second" are only used to distinguish in description, and have no special meaning.
[0034] In the following, according to the drawings Figure 1 to the drawings Figure 8 The utility model provides a multi-angle outer knife tube and tissue pulverizer.
[0035] As Figure 1 , Figure 2 As shown in the embodiment, the multi-angle outer knife tube comprises a straight pipe part 1 and a round head part 2, and the round head part 2 is connected to the end of the straight pipe part 1.The outer surface of the multi-angle outer knife tube is also provided with a first window 10, and the inner cavity of the multi-angle outer knife tube can be exposed through the first window 10.When the inner knife tube is arranged in the multi-angle outer knife tube, the second window of the inner knife tube can be staggered with the first window 10, and the edge of the first window 10 and the second window is staggered to form a pulverizing effect.
[0036] Specifically, on the multi-angle outer knife tube, part of material is removed at the end along at least two machining reference surfaces to form the above-mentioned first window 10.As Figure 2 As shown in the embodiment, taking the material removal in the form of grinding along two machining reference surfaces as an example, one machining plane can be formed along each machining reference surface after grinding, and the two machining planes are connected and form the profile surface of the first window 10.The distance between the machining reference surface and the axis of the multi-angle outer knife tube is arranged from large to small along the direction approaching the first window 10 from the other end of the multi-angle outer knife tube.Each machining reference surface passes through the straight pipe part 1 and the round head part 2 at the same time, and is arranged outside the multi-angle outer knife tube and the axis of the multi-angle outer knife tube (as Figure 4The intersection of the X-axis and the center axis makes the remaining shape of the round head 2 at least half larger than before grinding, which can achieve a better wrapping and limiting effect on the inner blade tube.
[0037] refer to Figure 3 , Figure 4 As shown, in the aforementioned multi-angle outer blade tube, compared to the existing window 10' formed by removing material using only a single processing reference surface in the prior art, a protruding nozzle structure 21 can be formed on the round head 2. This protruding nozzle structure 21 is convex, increasing the contact area with the inner blade tube, thereby limiting the inner blade tube in the radial direction of the straight tube portion 1, reducing the phenomenon of the inner blade tube deforming and detaching from the first window 10, thus improving the stability of the tissue grinder during operation, reducing the damage rate, and reducing the risk of damage to healthy tissue. Furthermore, referring to… Figure 5 As shown, compared to the existing cutting edge 11' formed by removing material using only one processing reference surface in the prior art, multiple processing reference surfaces can make the edge of the first window 10 form a sharper cutting edge 11, which is beneficial to improving the cutting efficiency.
[0038] Optionally, in this embodiment, at least two processing reference surfaces are symmetrically arranged about a preset reference surface, which is the longitudinal section of the multi-angle outer cutter tube. It should be noted that this preset reference surface is a virtual surface preset during processing, and it is arranged along the radial direction of the straight tube portion 1. After material is removed along the processing reference surface, the preset reference surface overlaps with the longitudinal mid-section of the multi-angle outer cutter tube, and the contour surface of the first window 10 is also symmetrical about the preset reference surface.
[0039] In some embodiments, the multi-angle outer blade is configured to remove a portion of material at its end along an even number of machining reference surfaces to form a first window 10. For example... Figure 2 As shown, when material is removed along the two processing reference surfaces, a protruding ridge is formed on the outer wall surface of the first window 10, and this protruding ridge coincides with a preset reference surface (for ease of description, the protruding ridge that coincides with the preset reference surface is defined as the central ridge 22). Figure 6 As shown, when material is removed along the four processing reference surfaces, the outer wall surface of the first window 10 forms three protruding ridges, and the middle protruding ridge coincides with the preset reference surface. This protruding ridge is the aforementioned middle ridge 22.
[0040] by Figure 2Taking the multi-angle outer blade tube formed along two machining reference surfaces as an example, the included angle m between the central edge 22 and the axis of the multi-angle outer blade tube is 6°, and the maximum depth n between the central edge 22 and the outer circumferential surface of the multi-angle outer blade tube in the radial direction is no greater than 1.4 mm. It should be noted that, compared to existing outer blade tubes with approximately the same area as the first window 10, this multi-angle outer blade tube can achieve similar cutting efficiency while making the included angle m between the window and the axis smaller, and the maximum depth n smaller. This results in a better wrapping and limiting effect of the outer blade tube on the inner blade tube without reducing cutting efficiency.
[0041] Similarly, in some other embodiments, the multi-angle outer blade is configured to remove a portion of material at its end along an odd number of machining reference surfaces to form a first window 10. Figure 7 For example, the multi-angle external blade is ground along three machining reference surfaces, one of which is perpendicular to a preset reference surface and is defined as the intermediate machining reference surface. Figure 8 As shown, the included angle m between the machining reference surface and the axis of the multi-angle outer tool tube is 6°, and the maximum depth dimension n between the first region and the outer peripheral surface of the multi-angle outer tool tube is no greater than 1.4 mm.
[0042] It should be noted that the number of processing reference surfaces is not specifically limited in this utility model, as long as it can form a protruding nozzle structure 21. For example, the included angle between any two processing reference surfaces does not exceed 20°, and adjacent processing reference surfaces have the same included angle. When there are two processing reference surfaces, the included angle between the two processing reference surfaces is 20°; when there are three processing reference surfaces, the included angle between adjacent processing reference surfaces is 10°.
[0043] This utility model also provides a tissue pulverizer, which includes an inner blade tube and the aforementioned multi-angle outer blade tube. The inner blade tube is rotatably inserted through the outer blade tube. The outer blade tube has a first window 10, and the inner blade tube has a second window. The first window 10 and the second window can be staggered to perform pulverization operations.
[0044] Compared to existing technologies that remove material using only a single processing reference surface, a protruding nozzle structure 21 can be formed in the round head 2. This protruding nozzle structure 21 is convex, which increases the contact area between the nozzle and the inner blade tube, thereby limiting the inner blade tube in the radial direction of the straight tube 1, reducing the phenomenon of the inner blade tube deforming and detaching from the first window 10, thus improving the stability of the tissue shredder during operation, reducing the damage rate, and reducing the risk of damage to healthy tissue. Furthermore, compared to existing technologies that remove material using only a single processing reference surface, multiple processing reference surfaces can make the edge of the first window 10 form a sharper cutting edge 11, which is beneficial to improving cutting efficiency.
[0045] In the description of the present specification, the description referring to the terms "some embodiments", "other embodiments", and the like means that the specific features, structures, materials or characteristics described in connection with the embodiments or examples are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0046] Obviously, the above embodiments of the present application are only for clear illustration of the present application, and are not a limitation on the embodiments of the present application. For those skilled in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the scope of the present application. Here, it is not necessary and impossible to exhaust all the embodiments. Any modification, equivalent substitution and improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.
Claims
1. A multi-angle external cutting tube characterized by, The multi-angle outer cutter tube comprises a straight tube part (1) and a round head part (2), the round head part (2) is connected to the end of the straight tube part (1), the multi-angle outer cutter tube is further provided with a first window (10), the inner cavity of the multi-angle outer cutter tube can be exposed through the first window (10), and A convex mouth structure (21) is formed on the round head part (2), the convex mouth structure (21) is used for wrapping the inner cutter tube to limit the inner cutter tube in the radial direction of the straight tube part (1).
2. The multi-angle outer cutter tube according to claim 1, wherein The multi-angle outer cutter tube is configured to remove part of the material at the end along at least two machining reference surfaces to form the first window (10), the distance between the machining reference surfaces and the axis of the multi-angle outer cutter tube is arranged from large to small in the direction approaching the first window (10) from the other end of the multi-angle outer cutter tube, the at least two machining reference surfaces pass through the straight tube part (1) and the round head part (2) at the same time, and both intersect with the axis of the multi-angle outer cutter tube outside the multi-angle outer cutter tube to form the convex mouth structure (21).
3. The multi-angle outer cutter tube according to claim 2, wherein The at least two machining reference surfaces are symmetrically arranged about a preset reference surface.
4. The multi-angle outer cutter tube according to claim 3, wherein The multi-angle outer cutter tube is configured to remove part of the material at the end along an even number of machining reference surfaces to form the first window (10), the outer wall surface of the first window (10) is formed with a middle edge (22), the middle edge (22) coincides with the preset reference surface, The included angle m between the middle edge (22) and the axis of the multi-angle outer cutter tube is 6°, and the maximum depth size n between the middle edge (22) and the outer peripheral surface of the multi-angle outer cutter tube in the radial direction of the multi-angle outer cutter tube is not greater than 1.4 mm.
5. The multi-angle outer cutter tube according to claim 3, wherein The multi-angle outer cutter tube is configured to remove part of the material at the end along an odd number of machining reference surfaces to form the first window (10), one of the machining reference surfaces is arranged perpendicularly to the preset reference surface and is defined as a middle machining reference surface, The included angle m between the middle machining reference surface and the axis of the multi-angle outer cutter tube is 6°, and the maximum depth size n between the middle machining reference surface and the outer peripheral surface of the multi-angle outer cutter tube is not greater than 1.4 mm.
6. The multi-angle outer cutter tube according to claim 4 or 5, wherein The included angle between any two machining reference surfaces is not greater than 20°, and the included angles between adjacent two machining reference surfaces are the same.
7. A tissue disintegrator characterized by, An inner cutter tube and the multi-angle outer cutter tube according to any one of claims 1-6 are included, the inner cutter tube is rotatably arranged in the outer cutter tube, the outer cutter tube has a first window (10), the inner cutter tube has a second window, the first window (10) and the second window can be staggered to perform a crushing operation.