Cutting equipment
By setting a design of axial through holes and radial give way slots on the material fixing device, the fixing problem of the conduit or guidewire during cutting is solved, and better fit and cutting accuracy are achieved.
Patent Information
- Application Number
- CN202421952367.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-13
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-08-13
AI Technical Summary
The existing conduits or guidewires are poorly fitted with the V-shaped grooves due to poor fixation during cutting, which affects the cutting accuracy.
Axial through holes and radial give way slots are provided on the material fixing device, and the conduit or guide wire is arranged in the through hole, and the tool is cut through the give way slot, so that the through holes have a better fit with the conduit or guide wire to avoid deviation.
Improve the fit of the catheter or guidewire during cutting, ensure cutting accuracy, prevent the catheter or guidewire from bending in the through hole, and improve the cutting effect.
Smart Images
Figure CN223057826U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of medical devices, in particular to a micro cutting device for cutting catheters or guide wires. Background Art
[0002] In the medical field, highly flexible and twistable catheters and / or guide wires are used to perform precise procedures deep inside the human body, such as in the cardiovascular system. For example, catheters are used to deliver drugs, stents, embolization devices, or other devices or agents for treating various diseases. The distal ends of such guide wires and / or catheters need to have good flexibility to avoid piercing the blood vessel wall during operation and causing additional damage.
[0003] When cutting a catheter or a guide wire with a cutting device, since it is a contact grinding cut, the catheter or the guide wire needs to have a better fixing method to ensure that the catheter or the guide wire will not shift during cutting, so as to ensure the cutting accuracy. The existing fixing method for the catheter or the guide wire is to use a V-groove to limit the displacement of the catheter or the guide wire during cutting. However, in fact, due to the straightness problem of the catheter or the guide wire itself, the catheter or the guide wire cannot always fit with the V-groove, resulting in a poor cutting effect. Therefore, a more effective way to fix the catheter or the guide wire needs to be considered. Summary of the Utility Model
[0004] The purpose of the utility model is to provide a cutting device. A bushing axially provided with a through hole is arranged on a material delivery device, and a catheter or a guide wire can be arranged in the through hole. The through hole enables the catheter or the guide wire to have a better degree of fit, and solves the problem of poor fit between the catheter or the guide wire and the V-groove in the prior art.
[0005] To achieve one of the above-mentioned utility model purposes, an embodiment of the utility model provides a cutting device, including: a main shaft device, which is fixed with a cutting tool;
[0006] A material fixing device, including a fixing seat and a bushing fixed to the fixing seat. The bushing is axially provided with a through hole for placing the material to be cut. The bushing is radially provided with a relief groove, and the relief groove is communicated with the through hole so that the cutting tool can extend into the through hole through the relief groove to cut the material to be cut.
[0007] As a further improvement of an embodiment of the utility model, the relief groove divides the through hole into a material inlet side and a material outlet side, and the diameter of the through hole on the material outlet side is larger than the diameter of the through hole on the material inlet side.
[0008] As a further improvement of an embodiment of the utility model, the diameter of the through hole on the material outlet side is 10 - 50 μm larger than the diameter of the through hole on the material inlet side.
[0009] As a further improvement of an embodiment of the utility model, the material entry side forms an entry end away from one end of the give way groove, and the diameter of the entry end gradually increases from close to the give way groove to away from the give way groove.
[0010] As a further improvement of an embodiment of the utility model, it also includes a base, and the fixing bases of the main shaft device and the material fixing device are both fixed to the base.
[0011] As a further improvement of one embodiment of the utility model, the spindle device also includes a vertical axis arranged in a direction perpendicular to the base, a horizontal axis arranged in a direction parallel to the base, and a connecting member connecting the vertical axis and the horizontal axis, and the tool is connected to one end of the horizontal axis away from the connecting member; the connecting member drives the horizontal axis to move axially along the vertical axis, and the horizontal axis drives the tool to move axially along the horizontal axis.
[0012] As a further improvement of one embodiment of the utility model, the extension direction of the through hole is parallel to the base, the cutting equipment also includes a material delivery device, the material delivery device includes a slidably matched guide rail and a slider, the guide rail is fixed to the base in the extension direction of the through hole, and the slider is provided with a fastener for fastening the material to be cut, and the fastener moves along the length direction of the guide rail with the slider.
[0013] As a further improvement of an embodiment of the utility model, the fastener is rotatably connected to the slider, and after the material to be cut is fastened to the fastener, the fastener rotates relative to the slider with the central axis of the material to be cut as the axis.
[0014] As a further improvement of an embodiment of the utility model, the material fixing device also includes a supporting member fixed to the base, the supporting member is arranged on the side of the fixing base away from the material delivery device, and the upper surface of the supporting member is V-shaped for supporting the cut material.
[0015] As a further improvement of an embodiment of the utility model, the material of the cutting tool is diamond semiconductor.
[0016] One or more technical solutions provided by the utility model have at least the following technical effects or advantages:
[0017] The cutting equipment provided by the utility model is provided with a bushing with a through hole opened in the axial direction on the material fixing device, the material is arranged in the through hole, and the top of the through hole has the effect of preventing the catheter or guide wire serving as the material from bending upward. Similarly, the catheter or guide wire can also be prevented from bending to the left or right in the through hole, so that the through hole and the catheter or guide wire have a better fit, avoiding the problem of poor cutting effect caused by the catheter or guide wire with poor straightness. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic structural diagram of the cutting device in the embodiment of the present utility model.
[0019] Figure 2 is Figure 1 The top view of the bushing in
[0020] Figure 3 is Figure 2 The schematic cross-sectional view along the line A-A in
[0021] 10. Base; 11. Vertical shaft; 12. Horizontal shaft; 13. Connecting piece; 14. Tool; 21. Fixed seat; 22. Bushing; 221. Through hole; 222. Relief groove; 23. Carrier; 31. Guide rail; 32. Slide block; 321. Connecting part; 33. Fastener. Specific embodiments
[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.
[0023] Spatial relative position terms used herein, such as "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., are for the purpose of facilitating description to describe the relationship of one unit or feature relative to another unit or feature as shown in the accompanying drawings. The spatial relative position terms may be intended to include different orientations of the device in use or operation other than the orientation shown in the figures.
[0024] For example, if the device in the figure is flipped, the unit described as being "below" or "beneath" other units or features will be located "above" other units or features. Therefore, the exemplary term "below" can encompass both the upper and lower orientations. The device may be oriented in other ways (rotated 90 degrees or other orientations), and the spatially related descriptive terms used herein can be interpreted accordingly.
[0025] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.
[0026] An embodiment of the present utility model provides a cutting device, as Figure 1 shown, which includes a spindle device and a material fixing device. A cutter 14 is fixed on the spindle device; the material fixing device includes a fixing seat 21 and a bushing 22 fixed to the fixing seat 21. The bushing 22 is axially provided with a through hole 221 for placing the material to be cut, and the bushing 22 is radially provided with a relief groove 222. The relief groove 222 communicates with the through hole 221 so that the cutter 14 can extend into the through hole 221 through the relief groove 222, and then cut the material to be cut.
[0027] Preferably, in this embodiment, the cross-section of the through hole 221 is circular, and the cross-section of the conduit or wire as the material is also circular. Setting the through hole 221 to be circular can better wrap the conduit or wire, so that the circular through hole 221 and the circular conduit or wire have better fit, and the conduit or wire will not shift during cutting, thereby ensuring the cutting accuracy.
[0028] Specifically, one end of the outer diameter of the bushing 22 is larger, one end is smaller, and the middle section connects the larger outer diameter end and the smaller outer diameter end, so that the outer diameter of the middle section gradually changes, and the outside of the middle section is frustum-shaped. The end with the larger outer diameter of the bushing 22 is embedded in the fixing seat 21 for fixation, and the conduit or wire as the material enters the through hole 221 from the end of the larger outer diameter end. The relief groove 222 is opened at the end with the smaller outer diameter, and the conduit or wire extends out from the end of the smaller outer diameter end after passing through the relief groove 222.
[0029] Burrs usually appear on the conduit or wire after cutting, which makes the outer diameter of the conduit or wire increase in disguise. For this reason, the diameter of the through hole 221 on the side of the relief groove 222 away from the larger outer diameter end is designed to be larger. Or rather, the relief groove 222 divides the through hole 221 into a material inlet side and a material outlet side. The diameter of the through hole 221 on the material inlet side is smaller, and the diameter of the through hole 221 on the material outlet side is larger, larger than the diameter of the through hole 221 on the material inlet side. So that after the conduit or wire is cut in the relief groove 222, the generated burrs can also smoothly enter the through hole 221 on the material outlet side. Preferably, the diameter of the through hole 221 on the material inlet side is 10 - 50 μm smaller than the diameter of the through hole 221 on the material outlet side.
[0030] Further, the fixing of the bushing 22 to the fixed seat 21 is detachable, enabling the operator to select a bushing 22 with a through hole 221 whose diameter is adapted to the outer diameter of the catheter or guide wire. Preferably, the selected bushing 22 satisfies that the diameter of the through hole 221 on the material inlet side is 3-5 μm larger than the outer diameter of the catheter or guide wire. Under this difference, the catheter or guide wire can better fit the inner wall of the through hole 221, reducing the influence of the straightness problem of the catheter or guide wire itself on cutting. More preferably, the bushing 22 is configured such that the diameter of the through hole 221 on the material outlet side is 15-17 μm larger than the diameter of the through hole 221 on the material inlet side, that is, the diameter of the through hole 221 on the material outlet side is about 20 μm larger than the outer diameter of the catheter or guide wire, which can prevent the burrs formed after cutting the catheter or guide wire from being difficult to exit the bushing 22 due to the small diameter of the through hole 221, and at the same time can ensure that the catheter or guide wire can still maintain good straightness under this diameter condition of the through hole 221.
[0031] Further, an inlet end is formed at one end of the material inlet side away from the relief groove 222. The inlet end has a gradually increasing diameter from the side close to the relief groove 222 to the side away from the relief groove 222. That is, at the end of the material inlet side, the diameter of the through hole 221 is the largest and gradually decreases along the direction of material entry, facilitating the entry of the material into the through hole 221.
[0032] Further, the cutting device further includes a base 10 and a material delivery device fixed to the base 10. The fixed seat 21 is fixed to the base 10 such that the extending direction of the through hole 221 in the bushing 22 is parallel to the base 10. The material delivery device includes a guide rail 31 fixed to the base 10 and a slider 32 slidably engaged with the guide rail 31. The guide rail 31 is fixed to the base 10 with its length direction being the same as the extending direction of the through hole 221, and the slider 32 moves along the length direction of the guide rail 31. A connecting portion 321 extends upward from the slider 32, and a fastener 33 is connected to the end of the connecting portion 321 away from the slider 32. The fastener 33 is coaxially arranged with the bushing 22 and is rotatably connected to the connecting portion 321. The coaxial arrangement of the fastener 33 and the bushing 22 enables the catheter or guide wire to pass through the fastener 33 and the through hole 221 without bending in sequence, and then be fastened by the fastener 33, realizing the fixation of the catheter or guide wire, which is beneficial for the cutting of the tool 14.
[0033] Generally, a catheter or guide wire has multiple cutting target positions, including along the length direction and / or radial direction of the catheter or guide wire. For the length direction of the catheter or guide wire, after the catheter or guide wire is fastened by the fastener 33, the slider 32 is moved so that the catheter or guide wire moves along the length direction to expose the cutting target position to the relief groove 222, and then cut with the tool 14. For the radial direction of the catheter or guide wire, the fastener 33 is rotated, and the fastener 33 drives the catheter or guide wire to rotate, so that the cutting target position rotates to be upwardly exposed to the relief groove 222, and then cut with the tool 14.
[0034] Furthermore, the spindle device is also fixed to the base 10, wherein the spindle device also includes a vertical axis 11 arranged in a direction perpendicular to the base 10 and fixedly connected to the base 10, a horizontal axis 12 arranged parallel to the base 10, and a connecting member 13 connecting the vertical axis 11 and the horizontal axis 12, and the tool 14 is movably connected to the end of the horizontal axis 12 away from the connecting member 13.
[0035] The connecting member 13 drives the horizontal axis 12 and the cutter 14 connected to the horizontal axis 12 to move along the axial direction of the vertical axis 11, toward the direction close to the base 10 and away from the base 10, so as to adjust the height of the cutter 14; the horizontal axis 12 drives the cutter 14 connected to the horizontal axis 12 to move relative to the vertical axis 11 along the axial direction of the horizontal axis 12, so as to adjust the position of the cutter 14 in the direction parallel to the base 10, and the cutter 14 can also move along the axial direction of the horizontal axis 12 toward the connecting member 13 and away from the connecting member 13. The connection relationship between the vertical axis 11, the connecting member 13, the horizontal axis 12 and the cutter 14 enables the cutter 14 to move in the direction perpendicular to the base 10 and in the direction parallel to the base 10, and adjusts the position of the cutter 14 to adapt to the material position fixed by the material fixing device and the material delivery device, so as to cut the catheter or guidewire.
[0036] Furthermore, the material fixing device also includes a supporting member 23 fixed to the base 10. The supporting member 23 is arranged on the side of the fixing seat 21 away from the material delivery device, and the upper surface is formed into a V-shaped groove. When the catheter or guide wire cooperates with the guide rail 31 and the slider 32, when the slider 32 moves toward the fixing seat 21, the catheter or guide wire extends out of the bushing 22 and overlaps with the V-shaped groove to prevent the catheter or guide wire from sagging due to gravity, causing the part exposed to the give way groove 222 to curl up, affecting the cutting.
[0037] Furthermore, the tool 14 is a cutting blade made of diamond semiconductor. The spindle device drives the tool 14 to rotate at a speed of 30,000 to 50,000 rpm.
[0038] It should be understood that although this specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation mode may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.
[0039] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the utility model. They are not intended to limit the protection scope of the utility model. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the utility model should be included in the protection scope of the utility model.
Claims
1. A cutting device, characterized in that, Including: A main shaft device, on which a cutting tool is fixed; A material fixing device, including a fixing base and a bushing fixed to the fixing base. The bushing is axially provided with a through hole for placing the material to be cut, and the bushing is radially provided with a relief groove, and the relief groove communicates with the through hole, so that the cutting tool can extend into the through hole through the relief groove, and then cut the material to be cut.
2. The cutting device according to claim 1, characterized in that, The relief groove divides the through hole into a material inlet side and a material outlet side, and the diameter of the through hole on the material outlet side is larger than the diameter of the through hole on the material inlet side.
3. The cutting device according to claim 2, characterized in that, The diameter of the through hole on the material outlet side is 10-50 μm larger than the diameter of the through hole on the material inlet side.
4. The cutting device according to claim 2, characterized in that, One end of the material inlet side away from the relief groove forms an inlet end, and the diameter of the inlet end gradually increases from near the relief groove to away from the relief groove.
5. The cutting device according to claim 1, characterized in that, It further includes a base, and the main shaft device and the fixing base of the material fixing device are both fixed to the base.
6. The cutting device according to claim 5, characterized in that, The main shaft device further includes a vertical shaft arranged in a direction perpendicular to the base, a horizontal shaft arranged in a direction parallel to the base, and a connecting member connecting the vertical shaft and the horizontal shaft. The cutting tool is connected to one end of the horizontal shaft away from the connecting member; the connecting member drives the horizontal shaft to move axially along the vertical shaft, and the horizontal shaft drives the cutting tool to move axially along the horizontal shaft.
7. The cutting device according to claim 5, characterized in that, The extending direction of the through hole is parallel to the base, and the cutting device further includes a material delivery device. The material delivery device includes a guide rail and a slider in sliding fit. The guide rail is fixed to the base in the extending direction of the through hole, and a fastener for fastening the material to be cut is arranged on the slider, and the fastener moves along the length direction of the guide rail with the slider.
8. The cutting device according to claim 7, characterized in that, The fastener is rotatably connected to the slider. After the material to be cut is fastened to the fastener, the fastener rotates relative to the slider with the central axis of the material to be cut as the axis.
9. The cutting device according to claim 7, wherein The material fixing device further includes a bearing member fixed to the base. The bearing member is arranged on the side of the fixing base away from the material delivery device, and the upper surface of the bearing member is V-shaped for bearing the cut material.
10. The cutting device according to any one of claims 1 to 9, characterized in that, The material of the cutting tool is diamond semiconductor.