Cutting device

Abstract

The utility model discloses a kind of cutting device for balloon after forming, for cutting the distal end and proximal end of balloon, comprising: base, guide seat, first limit block, second limit block and cutting assembly, guide seat is located on base;First limit block is located on guide seat, for the near end of balloon to be fixedly provided;Second limit block is located on guide seat, for the distal end of balloon to be fixedly provided;The cutting assembly is movable along the length direction of the guide seat, the cutting assembly is configured as when the cutting assembly moves through the first limit block, the proximal end of the balloon is cut, when the cutting assembly moves through the second limit block, the distal end of the balloon is cut.The utility model ensures that balloon is more stable, cutting length is more accurate, and since balloon is fixed in midair, avoid scratching balloon, and multiple balloon distal end and proximal end can be simultaneously cut simultaneously, improve cutting efficiency.

Description

Technical Field

[0001] This utility model relates to the field of medical technology, specifically to a cutting device. Background Technology

[0002] Balloon molding refers to the plastic deformation of a polymer preform tubing in a mold using methods such as heating, internal pressure, and stretching to ultimately obtain a balloon with a predetermined shape and performance. It is a crucial step in the fabrication of balloon catheters. After balloon molding, excess tubing at both ends of the balloon needs to be removed for subsequent welding. The two ends of the balloon are divided into distal and proximal ends, and the lengths of these ends after molding directly affect the subsequent welding quality and play a significant role in the balloon catheter's passageway and expansion capabilities. Therefore, the design requires strict control over the lengths of the distal and proximal ends, with a small tolerance range. In existing technologies, when cutting excess tubing at the distal and proximal ends of the balloon, a ruler must first be placed under a microscope, then the balloon is placed on the ruler for cutting. Because the balloon cannot be fixed in place, inaccurate cutting lengths are easily caused, and the balloon is easily scratched due to friction against the ruler. Furthermore, only one cut can be made, resulting in low efficiency. Therefore, there is a need in this field for a cutting device after balloon molding. Summary of the Invention

[0003] This utility model aims to at least partially solve one of the technical problems in related technologies. Therefore, one objective of this utility model is to provide a cutting device for cutting the distal and proximal ends of a balloon obtained from a balloon molding process, comprising: Base; A guide seat, which is disposed on the base; The first limiting block is disposed on the guide seat and is used for the proximal end of the balloon to be inserted and fixed. The second limiting block is disposed on the guide seat and is used for the distal end of the balloon to be inserted and fixed. A cutting assembly is movable along the length of the guide seat. The cutting assembly is configured to cut the proximal end of the balloon when it moves past the first limiting block, and to cut the distal end of the balloon when it moves past the second limiting block.

[0004] Preferably, the guide seat extends along the length direction of the base, and the first limiting block and the second limiting block are detachably disposed on the guide seat.

[0005] Preferably, the guide seat has an open guide groove that extends along the length of the guide seat.

[0006] Preferably, the first limiting block includes: The first cutting groove is disposed on the first limiting block and is on the same straight line as the guide groove; The first through hole is provided through the first limiting block, and the axis of the first through hole intersects with the first cutting groove.

[0007] Preferably, the second limiting block includes: The second cutting groove is provided on the second limiting block and is on the same straight line as the guide groove; The second through hole is provided through the second limiting block, and the axis of the second through hole intersects with the second cutting groove.

[0008] Preferably, the inner diameter of the first through hole is larger than the outer diameter of the proximal end of the balloon, and the inner diameter of the second through hole is larger than the outer diameter of the distal end of the balloon.

[0009] Preferably, the guide seat is provided with two insertion holes, which are coaxial with and connected to the first through hole and the second through hole, respectively.

[0010] Preferably, the guide seat is provided with at least two mounting slots, and each mounting slot is provided with a gasket on the side wall perpendicular to the axial direction of the balloon, and the first limiting block and the second limiting block are in contact with the mounting slot through the gasket.

[0011] Preferably, the cutting assembly includes: A guide rail is provided on the base; A slider, which is slidably disposed on the guide rail; A connecting block, which is disposed on the slider and extends toward the guide seat; A blade is disposed at the bottom of the connecting block and is at least partially accommodated in the guide groove.

[0012] Preferably, the guide rail is provided with stop members at both ends, and the stop members are used to limit the stroke of the slider to prevent the slider from leaving the guide rail.

[0013] The above-described solution of this utility model has at least the following beneficial effects: The cutting device provided by this utility model for balloon molding can fix the proximal end of the balloon to the first limiting block or the distal end of the balloon to the second limiting block. The cutting component moves along the length of the guide seat. When the cutting component passes the first and second limiting blocks, it can cut the proximal or distal end of the balloon. This ensures more stable balloon fixation, more accurate cutting length, and avoids scratching the balloon because the balloon is fixed in the air. It can also cut the proximal and distal ends of multiple balloons at the same time, improving cutting efficiency.

[0014] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the cutting device for balloon shaping provided in this embodiment of the present invention; Figure 2 yes Figure 1 Enlarged view of the guide seat, the first limiting block and the second limiting block in the middle; Figure 3 yes Figure 2 A sectional view; Figure 4 This is an exploded view of the cutting component provided in the embodiment of this utility model.

[0017] Explanation of icon numbers: 10. Base; 101. Mounting slot; 11. Gasket; 20. Guide seat; 201. Guide groove; 202. Insertion hole; 30. First limiting block; 301. First cutting groove; 302. First through hole; 40. Second limiting block; 401. Second cutting groove; 402. Second through hole; 50. Cutting assembly; 501. Guide rail; 502. Slider; 503. Connecting block; 504. Blade; 505. Stop; 60. Balloon.

[0018] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0019] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0020] It should be understood that in the description of this utility model, the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "radial", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device, component or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0022] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0024] The cutting device for balloon shaping according to an embodiment of the present invention will now be described in detail with reference to the accompanying drawings.

[0025] Reference Figure 1 and Figure 2 As shown, the cutting device provided in this embodiment of the present invention is used to cut the distal and proximal ends of the balloon 60 obtained by the balloon 60 molding process. It includes: a base 10, a guide seat 20, a first limiting block 30, a second limiting block 40, and a cutting assembly 50. The guide seat 20 is disposed on the base 10; the first limiting block 30 is disposed on the guide seat 20 for the proximal end of the balloon 60 to be inserted and fixed; the second limiting block 40 is disposed on the guide seat 20 for the distal end of the balloon 60 to be inserted and fixed; the cutting assembly 50 is movable along the length direction of the guide seat 20. The cutting assembly 50 is configured to cut the proximal end of the balloon 60 when it moves past the first limiting block 30, and to cut the distal end of the balloon 60 when it moves past the second limiting block 40. Obviously, the balloon 60 here does not refer to the balloon 60 in the balloon 60 catheter, but rather to the product obtained after the polymer preform tubing has undergone the balloon 60 molding process. like Figure 1-3 As shown, the balloon 60 includes a smaller proximal end and a smaller distal end in addition to the larger central part.

[0026] The balloon 60 cutting device provided in this embodiment can fix the proximal end of the balloon 60 to the first limiting block 30, or fix the distal end of the balloon 60 to the second limiting block 40. The cutting component 50 moves along the length of the guide seat 20, and can cut both the proximal and distal ends of the balloon 60 as it passes the first limiting block 30 and the second limiting block 40. This ensures that the balloon 60 can be cut in a more stable environment, the cutting length is more accurate, and because the balloon 60 is suspended and fixed, scratches on the balloon 60 are avoided. Furthermore, multiple balloons can be cut simultaneously at both the proximal and distal ends, improving cutting efficiency.

[0027] Preferably, multiple first limiting blocks 30 and second limiting blocks 40 can be provided to fix multiple balloons 60, that is, the proximal end of one balloon 60 is fixed on each first limiting block 30 and the distal end of one balloon 60 is fixed on each second limiting block 40. Thus, when the cutting assembly 50 moves from one end to the other along the length direction of the guide seat 20, it can cut the proximal or distal ends of multiple balloons 60 at the same time, so as to improve the cutting efficiency.

[0028] Optionally, the base 10 is arranged at an angle to the horizontal plane, with the end furthest from the operator higher than the end closest to the operator, to facilitate operator operation. Support structures are provided on both sides of the base 10. These support structures can be fixed at an angle, such as triangular plates. Alternatively, the support structures can be adjustable in angle, such as linkage mechanisms including gears / ratchets or gas spring support mechanisms. A silicone pad can be provided at the bottom of the support structure for anti-slip purposes, ensuring greater stability of the base 10 during cutting.

[0029] Reference Figure 2 and Figure 3 As shown, the guide seat 20 is along the length direction of the base 10 (e.g., Figure 1 (As shown in the direction from the upper left to the lower right). The guide seat 20 is provided with a guide groove 201 with an opening, which extends along the length direction of the guide seat 20. The blade 504 described below can enter the guide groove 201 through the opening. Preferably, the width of the guide groove 201 can be twice the thickness of the blade 504. When the cutting assembly 50 moves, the blade 504 can be moved along the guide groove 201 so that the blade 504 is guided by the guide groove 201 to the first limiting block 30 and the second limiting block 40 for cutting. In other embodiments, the guide seat 20 can extend in other directions of the base 10, such as along the width direction of the base 10 (e.g., Figure 1 (As shown, it extends from the upper right to the lower left).

[0030] In this embodiment, the first limiting block 30 and the second limiting block 40 are detachably mounted on the guide seat 20. This detachability allows for the replacement of the first limiting block 30 and the second limiting block 40, and also allows for adjustment of the distance between the first limiting block 30 and the second limiting block 40 and the guide seat 20, thus allowing adjustment of the required proximal or distal length of the balloon 60. In other embodiments, the first limiting block 30 and the second limiting block 40 can be fixed to the guide seat 20 and integrally formed. This simplifies the structure of the cutting device.

[0031] Further, the first limiting block 30 includes a first cutting groove 301 and a first through hole 302. The first cutting groove 301 is disposed on the first limiting block 30 and is on the same straight line as the guide groove 201; the first through hole 302 is disposed through the first limiting block 30, and the axis of the first through hole 302 intersects the first cutting groove 301. The angle between the axis of the first through hole 302 and the first cutting groove 301 is determined according to the angle between the incision at the proximal end of the balloon 60 and the axis of the balloon 60. In this embodiment, the axis of the first through hole 302 is perpendicular to the first cutting groove 301. The second limiting block 40 includes a second cutting groove 401 and a second through hole 402. The second cutting groove 401 is disposed on the second limiting block 40 and is on the same straight line as the guide groove 201; the second through hole 402 is disposed through the second limiting block 40, and the axis of the second through hole 402 intersects the second cutting groove 401. Similarly, the angle between the axis of the second through hole 402 and the second cutting groove 401 is determined based on the angle between the incision at the distal end of the balloon 60 and the axis of the balloon 60. In this embodiment, the angle between the axis of the second through hole 402 and the second cutting groove 401 is 60°. The axis of the first through hole 302 does not intersect with the axis of the second through hole 402 to avoid interference between the two balloons 60. Preferably, the widths of the first cutting groove 301 and the second cutting groove 401 are greater than the width of the guide groove 201, so that after adjusting the distance between the first limiting block 30 and the second limiting block 40 and the guide seat 20, the first cutting groove 301 and the second cutting groove 401 remain in communication with the guide groove 201.

[0032] Continue reading Figure 3 In this embodiment, the guide seat 20 is provided with two insertion holes 202, which are coaxial and connected with the first through hole 302 and the second through hole 402, respectively. When the balloon 60 is fixed, the proximal end of the balloon 60 can pass through the first through hole 302 and the corresponding insertion hole 202, and pass through the first cutting groove 301 of the balloon 60; the distal end of the other balloon 60 can pass through the second through hole 402 and the corresponding insertion hole 202, and pass through the second cutting groove 401 of the balloon 60. Thus, when the blade 504 moves along the guide groove 201 to the first cutting groove 301 and the second cutting groove 401, the blade 504 can cut the excess part of the proximal end of the balloon 60 in the first cutting groove 301, and cut the excess part of the distal end of the other balloon 60 in the second cutting groove 401, so that the blade 504 can cut multiple balloons 60 at once, which is more efficient.

[0033] Preferably, the guide seat 20 is provided with at least two mounting slots 101, and the first limiting block 30 and the second limiting block 40 are respectively disposed in the at least two mounting slots 101. Preferably, on the side wall perpendicular to the axial direction of the balloon 60, each mounting slot 101 is provided with a gasket 11, and the first limiting block 30 and the second limiting block 40 are fitted into the mounting slot 101 through the gasket 11. Furthermore, by adjusting the thickness or number of gaskets 11, the installation position of the first limiting block 30 and the second limiting block 40 in the mounting slot 101 can be adjusted, thereby adjusting the position between the first cutting slot 301, the second cutting slot 401 and the guide slot 201. In this way, during the cutting process, the length to be retained at the proximal and distal ends of the balloon 60 can be adjusted. Optionally, since the axis of the second through hole 402 is not perpendicular to the second cutting groove 401, the second cutting groove 401 is set at an angle. Therefore, the second limiting block 40 is set at an angle on the guide seat 20, and the mounting groove 101 is also set at an angle accordingly.

[0034] In this embodiment, the inner diameter of the first through hole 302 is larger than the outer diameter of the proximal end of the balloon 60, and the inner diameter of the second through hole 402 is larger than the outer diameter of the distal end of the balloon 60, but smaller than the outer diameter of the middle portion of the balloon 60. Preferably, the first through hole 302 and the second through hole 402 can be chamfered on the side near the balloon 60, so that when the proximal end of the balloon 60 is inserted and fixed in the first through hole 302 or the distal end of the balloon 60 is inserted and fixed in the second through hole 402, the first through hole 302 and the second through hole 402 can better fit the balloon 60, ensuring more stable cutting. It is understood that the taper of the chamfer can be adapted to the taper of the transition from the middle portion of the balloon 60 to the distal and proximal ends. (Balloon 60) Reference Figure 1 and Figure 4 As shown, the cutting assembly 50 includes: a guide rail 501, a slider 502, a connecting block 503, and a blade 504. The guide rail 501 is disposed on the base 10, located on one side of the guide seat 20, and extends in the same direction as the guide seat 20; the slider 502 is slidably disposed on the guide rail 501; the connecting block 503 is disposed on the slider 502 and extends toward the guide seat 20; the blade 504 is disposed at the bottom of the connecting block 503 and is at least partially accommodated in the guide groove 201.

[0035] In this embodiment, the slider 502 can be manually pushed, causing the connecting block 503 to move along the guide rail 501 with the slider 502, and driving the blade 504 to move within the guide groove 201. This allows the blade 504 to cut the proximal and distal ends of the balloon 60 as the slider 502 passes through the first cutting groove 301 and the second cutting groove 401. Repeating this operation simplifies the cutting of the proximal and distal ends of the balloon 60 and increases efficiency.

[0036] Preferably, each end of the guide rail 501 is provided with a stop 505. The stop 505 is used to limit the stroke of the slider 502 to prevent the slider 502 from disengaging from the guide rail 501. The stop 505 can stop and limit the slider 502, so that when the slider 502 slides to both ends of the guide rail 501, it can be blocked by the stop 505, preventing the slider 502 from sliding out of the guide rail 501. Furthermore, the position of the stop 505 on the guide rail 501 is adjustable, so that the stroke of the slider 502 is adjustable.

[0037] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0038] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A cutting device for cutting the distal and proximal ends of a balloon obtained from a balloon forming process, characterized in that, include: Base; A guide seat, which is disposed on the base; The first limiting block is disposed on the guide seat and is used for the proximal end of the balloon to be inserted and fixed. The second limiting block is disposed on the guide seat and is used for the distal end of the balloon to be inserted and fixed. A cutting assembly is movable along the length of the guide seat. The cutting assembly is configured to cut the proximal end of the balloon when it moves past the first limiting block, and to cut the distal end of the balloon when it moves past the second limiting block.

2. The cutting device according to claim 1, characterized in that, The guide seat extends along the length of the base, and the first limiting block and the second limiting block are detachably mounted on the guide seat.

3. The cutting device according to claim 2, characterized in that, The guide seat is provided with an open guide groove, which extends along the length of the guide seat.

4. The cutting device according to claim 3, characterized in that, The first limiting block includes: The first cutting groove is disposed on the first limiting block and is on the same straight line as the guide groove; The first through hole is provided through the first limiting block, and the axis of the first through hole intersects with the first cutting groove.

5. The cutting device according to claim 4, characterized in that, The second limiting block includes: The second cutting groove is provided on the second limiting block and is on the same straight line as the guide groove; The second through hole is provided through the second limiting block, and the axis of the second through hole intersects with the second cutting groove.

6. The cutting device according to claim 5, characterized in that, The inner diameter of the first through hole is larger than the outer diameter of the proximal end of the balloon, and the inner diameter of the second through hole is larger than the outer diameter of the distal end of the balloon.

7. The cutting device according to claim 5, characterized in that, The guide seat is provided with two insertion holes, which are coaxial with and connected to the first through hole and the second through hole, respectively.

8. The cutting device according to claim 1, characterized in that, The guide seat is provided with at least two mounting slots, and each mounting slot is provided with a gasket on the side wall perpendicular to the axial direction of the balloon. The first limiting block and the second limiting block are in contact with the mounting slot through the gasket.

9. The cutting device according to claim 3, characterized in that, The cutting assembly includes: A guide rail is provided on the base; A slider, which is slidably disposed on the guide rail; A connecting block, which is disposed on the slider and extends toward the guide seat; A blade is disposed at the bottom of the connecting block and is at least partially accommodated in the guide groove.

10. The cutting device according to claim 9, characterized in that, The guide rail is provided with stop members at both ends. The stop members are used to limit the stroke of the slider to prevent the slider from leaving the guide rail.

Images