CN219618489U - Spiral flaring frock and processingequipment of cardiovascular intervention pipe - Google Patents

Abstract

The utility model discloses a spiral flaring tool and a processing device of a cardiovascular interventional catheter, wherein the spiral flaring tool comprises an outer shell, a die, an inner shell and a mandrel, and an assembly channel is formed in the outer shell in a hollow mode; the die is arranged in the assembly channel, and a reducing channel is arranged on the die; the inner shell is detachably assembled in the assembly channel and can move in a direction towards or away from the die; the mandrel is arranged on the inner shell and extends towards the reducing channel and is used for sleeving the pipe to be flared; the mandrel comprises a first section and a second section which are gradually narrowed along the direction away from the inner shell; the caliber value of one end of the reducing channel, which is far away from the inner shell, is larger than that of the first section; the initial caliber value of the pipe to be flared is smaller than the diameter value of the first section and larger than the diameter value of the second section. According to the utility model, the inner diameter and the outer diameter of the pipe to be flared are respectively adjusted through the mandrel and the die, so that the control precision of the product dimension parameters in the flaring machining process is improved.

Description

Spiral flaring frock and processingequipment of cardiovascular intervention pipe

Technical Field

The utility model relates to the technical field of pipe flaring processing, in particular to a spiral flaring tool and a processing device of a cardiovascular interventional catheter.

Background

In recent years, medical diagnosis and therapeutic methods of interventional therapy have rapidly progressed. The interventional therapy is that under the guidance and monitoring of digital subtraction angiography, CT, ultrasonic and magnetic resonance imaging equipment, a puncture needle, a catheter and other interventional devices are used to guide specific instruments into the pathological change part of the human body through natural duct or tiny wound of the human body for minimally invasive therapy. Often the interventional catheter of the medical device is not conveniently integrally formed, but rather is spliced from different tubing.

The general mode of splicing the pipes comprises an end face butt joint mode and an overlapping cladding mode, and the end face-to-end face splicing mode is high in molding difficulty and weak in tensile capacity after splicing; the splicing mode of the overlapped coating can avoid the defects, and meanwhile, the pipes with different specifications can also be matched through flaring parameters, so that the splicing mode of the overlapped coating is wider in application. For this purpose, during the assembly of the interventional catheter, it is often necessary to flare the butted catheter to fit another tubing for assembly.

However, the existing flaring device only increases the inner diameter of the pipe through a die, and after the pipe with the specified inner diameter is obtained, the outer diameter, wall thickness and other dimensional parameters of the pipe can be changed due to deformation; in particular, in an interventional catheter for intervention in a human body, the outer diameter of the tube has a great influence on whether the interventional operation can be smoothly performed. That is, the prior art flares have the disadvantage of not being sufficiently accurate in controlling the dimensional parameters of the product.

Accordingly, the prior art is still in need of improvement and development.

Disclosure of Invention

In view of the above-mentioned shortcomings of the prior art, the present utility model aims to provide a spiral flaring tool and a processing device of cardiovascular interventional catheters, which aims to solve the problem of insufficient accuracy of controlling dimension parameters of products in the existing flaring processing procedure.

The technical scheme of the utility model is as follows:

the spiral flaring tool comprises an outer shell, a die, an inner shell and a mandrel, wherein an assembly channel is formed in the outer shell in a hollow mode; the die is arranged in the assembly channel, and a reducing channel is arranged on the die; the inner shell is detachably assembled in the assembly channel, and the inner shell can move in a direction towards or away from the die; the mandrel is arranged on the inner shell, extends towards the reducing channel and is used for sleeving a pipe to be flared; the mandrel includes a first section and a second section that taper in a direction away from the inner shell; the caliber value of one end of the reducing channel, which is away from the inner shell, is larger than the diameter value of the first section; the initial caliber value of the pipe to be flared is smaller than the diameter value of the first section and larger than the diameter value of the second section.

The spiral flaring tool comprises a shell, a die and a die, wherein the die is detachably connected with the shell.

The spiral flaring tool comprises an assembly channel and a die, wherein the assembly channel comprises a first cavity and a second cavity, the inner shell is detachably arranged in the first cavity, and the die comprises a connecting section arranged in the first cavity and an extending section arranged in the second cavity; the radial cross-sectional area of the first chamber is greater than the radial cross-sectional area of the second chamber, and the cross-sectional area of the connecting section is greater than the radial cross-sectional area of the second chamber.

The spiral flaring tool comprises a first cavity and a second cavity, wherein the side wall of the first cavity is provided with first spiral lines, the side wall of the inner shell is provided with second spiral lines, and the first spiral lines are matched with the second spiral lines.

The spiral flaring tool comprises an inner shell, a mandrel and a mandrel, wherein the surface, facing the die, of the inner shell is a bearing plane, a slot is formed in the center of the bearing plane, and the slot is used for being inserted into the mandrel.

The spiral flaring tool comprises a reducing channel, a slot and a screw, wherein a port at one end of the reducing channel, which is away from the inner shell, is an assembly outlet, and the assembly outlet and the slot are coaxially arranged.

The spiral flaring tool, wherein the reducing channel is funnel-shaped, and the cross-sectional area of the reducing passageway decreases progressively in a direction away from the inner housing.

The spiral flaring tool comprises a die, wherein the die comprises at least one of a stainless steel die, a copper metal die, an aluminum alloy die and a zinc alloy die.

The spiral flaring tool comprises a mandrel, wherein the mandrel comprises at least one of a metal rod mandrel, a hard plastic mandrel and an alloy mandrel.

The utility model also discloses a processing device of the cardiovascular interventional catheter, which comprises the spiral flaring tool.

Compared with the prior art, the embodiment of the utility model has the following advantages:

when the spiral flaring tool disclosed by the utility model is used, firstly, the pipe to be flared is sleeved on the mandrel, and the initial caliber value of the pipe to be flared is smaller than the diameter value of the first section of the mandrel, so that the inner diameter of the pipe to be flared is enlarged, and the flaring effect is achieved; the mandrel, which is sleeved with the tubing to be flared, is then assembled onto the inner shell and installed into the assembly channel along with the inner shell. Along with the movement of the inner shell towards the die, the mandrel stretches into the reducing channel and gradually stretches out from the port of one end of the reducing channel, which is far away from the inner shell, the outer surface of the pipe to be flared contacts with the die, when the pipe passes through the port of the reducing channel, the pipe to be flared is extruded, and the outer diameter is reduced to be equal to the port of the reducing channel, namely, the control of the outer diameter of the pipe is completed. And finally reversely disassembling the inner shell, and taking down the pipe to finish the flaring processing procedure.

Therefore, in the using process of the spiral flaring tool disclosed by the embodiment, the inner diameter of the pipe and the outer diameter of the pipe can be controlled, so that the wall thickness of the flaring position of the pipe is also controlled, the control precision of the dimensional parameters of the pipe is integrally improved, and the manufacturing of the interventional catheter conforming to the using conditions of the interventional device is facilitated.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present utility model, and other drawings may be obtained according to the drawings without inventive effort to those skilled in the art.

FIG. 1 is a schematic structural diagram of a spiral flaring tool in the present utility model;

FIG. 2 is an axial sectional view of the assembled state of the spiral flaring tool and the pipe to be flared in the present utility model;

FIG. 3 is an axial cross-sectional view of the housing of the present utility model;

FIG. 4 is an axial cross-sectional view of a die in accordance with the present utility model;

FIG. 5 is an axial cross-sectional view of the inner housing of the present utility model;

fig. 6 is an axial cross-section of the mandrel of the present utility model.

Wherein, 10, the outer casing; 11. assembling the channel; 111. a first chamber; 112. a second chamber; 113. a first helical thread; 20. a die; 21. a variable diameter channel; 22. a connection section; 23. an extension section; 24. assembling an outlet; 30. an inner case; 31. a second spiral thread; 32. a load bearing plane; 33. a slot; 40. a mandrel; 41. a first section; 42. a second section; 50. and (5) expanding the pipe.

Detailed Description

In order to make the present utility model better understood by those skilled in the art, the following description will make clear and complete descriptions of the technical solutions of the embodiments of the present utility model with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1 and 2, in an embodiment of the present application, a spiral flaring tool is disclosed, wherein the tool comprises an outer shell 10, a die 20, an inner shell 30 and a mandrel 40, wherein an assembly channel 11 is formed in the outer shell 10 in a hollow manner; the die 20 is arranged in the assembly channel 11, and a reducing channel 21 is arranged on the die 20; the inner shell 30 is detachably assembled in the assembling channel 11, and the inner shell 30 can move in a direction toward or away from the die 20; the mandrel 40 is disposed on the inner shell 30, and extends toward the reducing channel 21, so as to be sleeved with a pipe 50 to be flared.

When the spiral flaring tool disclosed in this embodiment is used, the pipe 50 to be flared is first sleeved on the mandrel 40, then the mandrel 40 sleeved with the pipe 50 to be flared is assembled on the inner shell 30 and is installed in the assembly channel 11 together with the inner shell 30, and as the inner shell 30 moves towards the die 20, the mandrel 40 extends into the reducing channel 21 and gradually extends out from a port at one end of the reducing channel 21 facing away from the inner shell 30.

As shown in fig. 6, the mandrel 40 disclosed in this embodiment includes a first section 41 and a second section 42 that taper in a direction away from the inner shell 30; the diameter of the end of the reducing channel 21 facing away from the inner housing 30 is greater than the diameter of the first section 41; the initial caliber value of the tube 50 to be flared is smaller than the diameter value of the first section 41 and larger than the diameter value of the second section 42.

During actual processing, the initial caliber value of the pipe 50 to be flared is smaller than the diameter value of the first section 41 of the mandrel 40, so that the inner diameter of the pipe 50 to be flared is enlarged, and the flaring effect is achieved; and the outer surface of the tube 50 to be flared contacts the die 20 as the inner shell 30 moves toward the die 20; when the diameter of the pipe 50 to be flared is larger than the caliber of the position when passing through the port of the reducing channel 21, when the diameter of the port of the reducing channel 21 is smaller than the diameter of the flared pipe 50 after flaring, the pipe is extruded until the outer diameter of the pipe is contracted to be equal to the caliber of the port of the reducing channel 21, and then the control of the outer diameter of the pipe is completed. Finally, the inner shell 30 is reversely disassembled, the pipe is taken down, and the flaring machining process is completed.

Therefore, in the using process of the spiral flaring tool disclosed by the embodiment, the inner diameter of the pipe and the outer diameter of the pipe can be controlled, so that the wall thickness of the flaring position of the pipe is also controlled, the control precision of the dimensional parameters of the pipe is integrally improved, and the manufacturing of the interventional catheter conforming to the using conditions of the interventional device is facilitated.

Specifically, as one implementation of the present embodiment, the die 20 is detachably connected to the housing 10. The die 20 disclosed in this embodiment is provided with a reducing passage 21, and the port of the end of the reducing passage 21 facing away from the inner shell 30 determines the outer diameter of the pipe to be processed. That is, the die 20 is used for restraining the outer diameter of the pipe, so the die 20 is detachably connected with the housing 10, so that a proper type of die 20 can be flexibly selected to process the pipe with different outer diameter requirements, and the use flexibility of the spiral flaring tool is increased.

Specifically, the die 20 in this embodiment may be fixed in the assembly channel 11 by an interference fit, or may be detachably assembled by screwing, clamping, or the like.

As shown in fig. 3 and 4, as another implementation manner of the present embodiment, the assembly channel 11 is disclosed to include a first chamber 111 and a second chamber 112, the first chamber 111 communicates with the second chamber 112, the inner shell 30 is detachably disposed in the first chamber 111, and the die 20 includes a connection section 22 disposed in the first chamber 111 and an extension section 23 disposed in the second chamber 112; the radial cross-sectional area of the first chamber 111 is larger than the radial cross-sectional area of the second chamber 112, and the cross-sectional area of the connecting section 22 is larger than the radial cross-sectional area of the second chamber 112.

The cross section area of the connecting section 22 of the die 20 disclosed in this embodiment is larger than the radial cross section area of the second chamber 112, so that the die 20 is clamped in the first chamber 111 and is abutted against the housing 10, thereby stably supporting the die 20 and avoiding the risk of the die 20 sliding out from the second chamber 112. During assembly, the die 20 can only be removed on one side, i.e., if the die 20 needs to be replaced, the inner shell 30 and the mandrel 40 need to be removed first, then the die 20 is removed from the first chamber 111, and a new die 20 is replaced.

Specifically, the cross-sectional area of the extension section 23 disclosed in the embodiment may be equal to the radial cross-sectional area of the second cavity 112, so that the connection section 22 is abutted against the inner wall of the first cavity 111, and the extension section 23 is abutted against the inner wall of the second cavity 112, which is beneficial for maintaining stability of the die 20.

As shown in fig. 2 and 3, as another implementation manner of this embodiment, a first spiral groove 113 is provided on a side wall of the first chamber 111, and a second spiral groove 31 is provided on a side wall of the inner casing 30, where the first spiral groove 113 is adapted to the second spiral groove 31. The inner case 30 disclosed in the present embodiment is required to be detachably assembled with the outer case 10 to flexibly assemble the die 20 and the mandrel 40; but also needs to move within the assembly channel 11. Therefore, the first spiral threads 113 and the second spiral threads 31 are provided, the connection is realized through the screw connection between the inner shell 30 and the outer shell 10, the connection is stable, the release is not easy, and the assembly and the disassembly are convenient. Meanwhile, the inner shell 30 can be screwed in or out relative to the outer shell 10, can be stopped at any position and is stable, so that the position of flaring processing can be controlled flexibly with high precision, and the processing yield of products can be further improved.

As another implementation of this embodiment, as shown in fig. 4, a port of an end of the reducing channel 21 facing away from the inner housing 30 is disclosed as a fitting outlet 24, and the fitting outlet 24 is disposed coaxially with the slot 33. The reducing channel 21 disclosed in this embodiment is used for guiding the mandrel 40 and the tubular product 50 to be flared to move towards the assembly outlet 24, and by arranging the assembly outlet 24 coaxially with the slot 33, bending or deformation in the moving process of the mandrel 40 can be reduced, so that the tubular product keeps extending in a straight line direction, and the shape of the processed tubular product is prevented from being influenced.

Specifically, as another implementation manner of this embodiment, it is disclosed that the reducing channel 21 is funnel-shaped, and the cross-sectional area of the reducing channel 21 gradually decreases in a direction away from the inner shell 30. The shape of the reducing channel 21 is funnel-shaped, and the caliber of one end facing the inner shell 30 is larger, so that the mandrel 40 is aligned with the reducing channel 21 in the assembly process conveniently; and after the mandrel 40 enters the reducing channel 21, in case of misalignment of the assembly outlet 24, the mandrel 40 will contact the sidewall of the reducing channel 21, and the mandrel 40 will be guided by the sidewall of the reducing channel 21 and will still slide towards the assembly outlet 24 for the flaring process.

As shown in fig. 5, as another implementation manner of this embodiment, a bearing plane 32 is disclosed on a surface of the inner shell 30 facing the die 20, and a slot 33 is provided in a central position of the bearing plane 32, where the slot 33 is used for inserting the mandrel 40. The mandrel 40 disclosed in this embodiment is inserted into the slot 33, and can be flexibly assembled. Therefore, in actual operation, by using the detachable matching of the die 20 and the outer shell 10 and the detachable matching of the mandrel 40 and the inner shell 30, the mandrel 40 with specific size parameters can be selected to match with the die 20 with specific size parameters, so as to flexibly control the inner diameter and the outer diameter of the pipe processing, flexibly adapt to various pipe processing conditions, and further increase the use flexibility of the spiral flaring tool.

Specifically, the slot 33 disclosed in the embodiment is disposed at the center of the bearing plane 32, and is first, far away from the side wall of the assembly channel 11, so as to avoid friction or collision with the housing 10 during the movement of the mandrel 40; secondly, the inner shell 30 is coaxially arranged with the die 20 in the moving process, and the mandrel 40 is arranged on the central axis of the inner shell 30, so that the probability of radial offset of the mandrel 40 can be reduced, the mandrel 40 is more easily aligned with the die 20, and the effect of smoothly pushing the mandrel 40 and completing the flaring processing procedure is achieved.

Specifically, as another implementation manner of this example, the die 20 is disclosed to include at least one of a stainless steel die, a copper metal die, an aluminum alloy die, and a zinc alloy die. The tubular product 50 to be flared disclosed in the present embodiment is used in the medical field, such as an interventional catheter of an interventional device, and is mostly made of a polymer material, and has a certain ductility, but a smaller hardness. Therefore, the die 20 made of metal material, such as stainless steel, copper metal, aluminum alloy, zinc alloy, etc., is provided, and has hardness larger than that of the pipe, so that the pipe can be well extruded, and the effect of compressing the outer diameter of the pipe is achieved. It should be noted that, in the present embodiment, the type of the die 20 is merely exemplified, but the scope of the present utility model is not limited thereto, and other types of dies 20 should be considered as equivalent to the concept of the present utility model as long as the technical effects disclosed in the present utility model can be achieved.

Specifically, as another implementation manner of this embodiment, it is disclosed that the mandrel 40 includes at least one of a metal rod mandrel, a hard plastic mandrel, and an alloy mandrel. These mandrels 40 have a certain mechanical strength, are not easy to deform and have a long service life, so they are used for supporting the pipe 50 to be flared, so as to achieve a good flaring effect.

It should be noted that, in the present embodiment, the type of the mandrel 40 is merely exemplified, but the scope of the present utility model is not limited thereto, and other types of mandrels 40 should be considered as equivalent to the concept of the present utility model as long as the technical effects disclosed in the present utility model can be achieved.

As another embodiment of the present utility model, a processing device for a cardiovascular interventional catheter is disclosed, wherein the processing device comprises a spiral flaring tool as described in any one of the above.

In summary, the utility model discloses a spiral flaring tool, which comprises an outer shell 10, a die 20, an inner shell 30 and a mandrel 40, wherein an assembly channel 11 is formed in the outer shell 10 in a hollow manner; the die 20 is arranged in the assembly channel 11, and a reducing channel 21 is arranged on the die 20; the inner shell 30 is detachably assembled in the assembling channel 11, and the inner shell 30 can move in a direction toward or away from the die 20; the mandrel 40 is arranged on the inner shell 30, extends towards the reducing channel 21 and is used for sleeving a pipe 50 to be flared; the mandrel 40 comprises a first section 41 and a second section 42 that taper in a direction away from the inner shell 30; the diameter of the end of the reducing channel 21 facing away from the inner housing 30 is greater than the diameter of the first section 41; the initial caliber value of the tube 50 to be flared is smaller than the diameter value of the first section 41 and larger than the diameter value of the second section 42. When the spiral flaring tool disclosed by the embodiment is used, firstly, the pipe 50 to be flared is sleeved on the mandrel 40, and the initial caliber value of the pipe 50 to be flared is smaller than the diameter value of the first section 41 of the mandrel 40, so that the inner diameter of the pipe 50 to be flared is enlarged, and the flaring effect is achieved; the mandrel 40, which is fitted with the tube 50 to be flared, is then assembled onto the inner housing 30 and installed into the assembly channel 11 along with the inner housing 30. As the inner shell 30 moves toward the die 20, the mandrel 40 extends into the reducing channel 21 and gradually extends from the port of the end of the reducing channel 21 facing away from the inner shell 30, at this time, the outer surface of the tube 50 to be flared contacts the die 20, and when passing through the port of the reducing channel 21, the tube 50 to be flared is extruded, and the outer diameter is reduced to be equal to the port of the reducing channel 21, i.e., the control of the outer diameter of the tube is completed. Finally, the inner shell 30 is reversely disassembled, the pipe is taken down, and the flaring machining process is completed. Therefore, in the using process of the spiral flaring tool disclosed by the embodiment, the inner diameter of the pipe and the outer diameter of the pipe can be controlled, so that the wall thickness of the flaring position of the pipe is also controlled, the control precision of the dimensional parameters of the pipe is integrally improved, and the manufacturing of the interventional catheter conforming to the using conditions of the interventional device is facilitated.

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.

It should be noted that the specific structure and working principle of the utility model are described by taking the spiral flaring tool as an example, but the application of the utility model is not limited by the spiral flaring tool, and the utility model can be applied to the production and the use of other similar workpieces.

It is to be understood that the utility model is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the utility model is limited only by the appended claims.

The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.

Claims (10)

1. The utility model provides a spiral flaring frock which characterized in that includes:

a housing having an assembly passage formed therein;

the die is arranged in the assembly channel and is provided with a reducing channel;

an inner shell detachably assembled in the assembly channel, and the inner shell can move along the direction towards or away from the die;

the mandrel is arranged on the inner shell, extends towards the reducing channel and is used for sleeving a pipe to be flared;

wherein the mandrel comprises a first section and a second section that taper in a direction away from the inner shell; the caliber value of one end of the reducing channel, which is away from the inner shell, is larger than the diameter value of the first section; the initial caliber value of the pipe to be flared is smaller than the diameter value of the first section and larger than the diameter value of the second section.

2. The spiral flaring tool of claim 1, wherein said die is removably connected with said housing.

3. The spiral flaring tool of claim 1, wherein said assembly channel comprises a first cavity and a second cavity, said inner shell is removably disposed within said first cavity, said die comprises a connecting section disposed within said first cavity and an extension section disposed within said second cavity;

wherein the radial cross-sectional area of the first chamber is greater than the radial cross-sectional area of the second chamber, and the cross-sectional area of the connecting section is greater than the radial cross-sectional area of the second chamber.

4. The spiral flaring tool of claim 3, characterized in that a first spiral grain is arranged on the side wall of said first chamber, a second spiral grain is arranged on the side wall of said inner shell, and said first spiral grain is adapted to said second spiral grain.

5. The spiral flaring tool of claim 1, wherein the surface of said inner shell facing said die is a bearing plane, a slot is provided in the center of said bearing plane, said slot being configured for insertion of said mandrel.

6. The spiral flaring tool of claim 5, wherein a port of said reducing passageway at an end facing away from said inner shell is an assembly outlet, said assembly outlet being coaxially disposed with said slot.

7. The spiral flaring tool of any one of claims 1-6, wherein said reducing passageway is funnel-shaped in shape and the cross-sectional area of said reducing passageway decreases progressively in a direction away from said inner shell.

8. The spiral flaring tool of any one of claims 1-6, wherein said die comprises at least one of a stainless steel die, a copper metal die, an aluminum alloy die, a zinc alloy die.

9. The spiral flaring tool of any one of claims 1-6, wherein said mandrel comprises at least one of a metal rod mandrel and a rigid plastic mandrel.

10. A cardiovascular interventional catheter machining device, comprising a spiral flaring tool according to any one of claims 1 to 9.