CN220095538U

CN220095538U - Catheter tip shaping tool and catheter production system

Info

Publication number: CN220095538U
Application number: CN202321106122.XU
Authority: CN
Inventors: 赵旭升; 裴寒剑
Original assignee: Hengyi Beijing Medical Technology Co ltd
Current assignee: Hengyi Beijing Medical Technology Co ltd
Priority date: 2023-05-09
Filing date: 2023-05-09
Publication date: 2023-11-28
Anticipated expiration: 2033-05-09

Abstract

The utility model relates to a catheter tip shaping tool and a catheter production system, wherein the catheter tip shaping tool is used for shaping the tip of a catheter and comprises the following components: the base, the roof of the said base has annular sinking grooves, the inboard of the said annular sinking groove has central cylinders; a counter bore is formed in the bottom wall of the base, and a heating element is arranged in the counter bore; the guide tube is sleeved on the mandrel, the mandrel abuts against the central cylinder during molding, and the tip end of the guide tube is accommodated in the annular sinking groove. The catheter tip shaping tool disclosed by the utility model can reduce the defect of catheter tip shaping and reduce the defective rate of catheter products.

Description

Catheter tip shaping tool and catheter production system

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a catheter tip shaping tool and a catheter production system.

Background

The pipe at the tip of the catheter is mainly assembled by polyether block amide, polyethylene or sandwich metal braided wires. The tip part needs to be shaped after the tube is hot melted to form a round tip, and the round tip plays a more important role in the catheter passing through the lesion position in the blood vessel, so that the shape of the tip is strictly required, and the defects of burrs, unsmooth surface and the like cannot be caused.

The existing tip forming mold basically has only one group of heating blocks for heating by hot air or by electric induction, and the temperature of each area cannot be effectively controlled, so that the tip forming defect is easy to occur.

In addition, in the laser welding tip forming technology, the heat shrinkage tube is needed in the process, the consumable cost is high, the tip molding is easy to generate the conditions of uneven side surface thickness, uneven tip end surface and the like.

Disclosure of Invention

The utility model aims to provide a catheter tip molding tool and a catheter production system, which can reduce the defect of catheter tip molding and reduce the defective rate of catheter products.

In order to achieve the above object, in a first aspect, the present utility model provides a catheter tip shaping tool for shaping a tip of a catheter, including: the base, the roof of the said base has annular sinking grooves, the inboard of the said annular sinking groove has central cylinders;

a counter bore is formed in the bottom wall of the base, and a heating element is arranged in the counter bore;

the guide tube is sleeved on the mandrel, the mandrel abuts against the central cylinder during molding, and the tip end of the guide tube is accommodated in the annular sinking groove.

In an alternative embodiment, the counter bores comprise a plurality of counter bores which are uniformly distributed at the periphery of the annular counter sink, and the central cylinder comprises a hollow cylinder;

the heating piece comprises a peripheral heating piece and a central heating piece, wherein the peripheral heating piece is arranged in the counter bore and corresponds to the counter bore one by one, and the central heating piece is arranged in the hollow cylinder.

In an alternative embodiment, the outer side wall of the central cylinder forms an inner side groove surface of the annular sinking groove, and the peripheral annular surface opposite to the inner side groove surface forms an outer side groove surface of the annular sinking groove, and the outer side groove surface gradually inwards receives from top to bottom.

In an alternative embodiment, the top of the central cylinder is provided with a flat surface which can abut against the end of the mandrel, said flat surface being flush with the top wall of the base.

In an alternative embodiment, arc-shaped chamfers are arranged at the joint of the plane and the inner side groove surface, at the joint of the outer side groove surface and the top wall of the base, and at the joint of the groove bottom of the annular sinking groove and the outer side groove surface.

In an alternative embodiment, the inner side groove surface, the outer side groove surface and the groove bottom of the annular sinking groove are coated with anti-adhesion coating, and the anti-adhesion coating is made of polytetrafluoroethylene or parylene.

In an alternative embodiment, the base comprises a solid structural metal block comprising a copper or aluminum block in the shape of a cube.

In an alternative embodiment, the heating element comprises a heating rod or wire, and the heating element is connected with a temperature control system.

In an alternative embodiment, the temperature control system is connected with a foot switch controller, and the foot switch controller is connected with a timer.

In a second aspect, the present utility model provides a catheter production system comprising a catheter tip shaping tool according to any of the preceding embodiments.

Through seting up annular heavy groove at the base roof, can provide accommodation space for the pointed end of pipe to mould the type through the heating piece that sets up in the counter bore of base diapire to the pipe pointed end heating.

The catheter is sleeved on the mandrel to mould the tip, the shape of the catheter can be protected through the mandrel, and the mandrel can be propped against the top wall of the central cylinder during moulding, so that the relative fixation of the catheter during moulding is ensured.

During molding, the base is integrally heated through the heating piece, and then the tip of the catheter accommodated in the annular sinking groove is heated and plastically through heat transfer, so that the uniformity of heating of the tip of the catheter is ensured, and the molding effect is good.

Additional features and advantages of the utility model will be set forth in the detailed description which follows.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a catheter tip shaping tool according to the present utility model;

FIG. 2 is a schematic diagram of the top structure of a catheter tip shaping tool;

FIG. 3 is a schematic view of the bottom structure of a catheter tip shaping tool;

FIG. 4 is a schematic view of the catheter tip after molding;

FIG. 5 is a schematic diagram of the electrical connection of the temperature control system to the catheter tip shaping tool;

fig. 6 is a schematic diagram of the electrical connection between the foot switch controller and the timer.

Icon:

1-a base; 11-an annular sink; 11 a-an inner groove surface; 11 b-outer groove face; 12-a central cylinder; 13-counter bore; 14-arc chamfering;

2-heating element; 21-a peripheral heating element; 22-a central heating;

3-tip.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. It will be apparent that the described embodiments are some, but not all, embodiments of the utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

In the description of the present utility model, it should be noted that, the azimuth or positional relationship indicated by the terms "inner", "outer", etc. are based on the azimuth or positional relationship shown in the drawings, or the azimuth or positional relationship that is commonly put in use of the product of this application, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and therefore should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed", "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1 in combination with fig. 2 to 4, the tip shaping tool of the catheter in the present utility model is mainly used for shaping the tip 3 of the catheter. Specifically through setting up base 1, set up the annular sink 11 that is used for holding pipe point 3 on base 1 to and install the form of heating member 2 on base 1, heat base 1 wholly, and then mould the pipe point 3 of holding in annular sink 11 through heat conduction and mould, thereby improve the shaping effect of pipe point 3.

The utility model relates to a catheter tip shaping tool, which comprises a main body structure, wherein the main body structure comprises a base 1, an annular sinking groove 11 and a counter bore 13 are respectively formed in the top wall and the bottom wall of the base 1, and the annular sinking groove 11 and the counter bore 13 extend on the base 1 in opposite directions. Wherein the annular countersink 11 is mainly used for accommodating the catheter tip 3, and the countersink 13 is specifically used for mounting the heating element 2.

The catheter is sleeved on the mandrel (neither the catheter nor the mandrel is shown) and is used for protecting the structure of the catheter through the mandrel, the tip 3 of the catheter protrudes out of the front end of the mandrel, stretches into the annular sinking groove 11 when the catheter is molded, and is heated and deformed through the heated base 1.

The center of the base 1 is provided with a center cylinder 12, the center cylinder 12 is arranged on the inner side of the annular sinking groove 11, and the front end face of the mandrel can prop against the top wall of the center cylinder 12, so that the catheter and the tip 3 of the catheter are kept in a relatively fixed state.

The counter bore 13 is specifically formed in the bottom wall of the base 1 and is used for installing the heating element 2, and the heating element 2 is used for integrally heating the base 1, so that the catheter tip 3 accommodated in the annular counter sink 11 is indirectly heated, and plastic deformation is generated in a heated state.

Through the shaping tool provided by the utility model, the tip 3 of the catheter can be effectively heated in the annular sinking groove 11, so that the heating uniformity of the tip 3 is enhanced, and the condition that the wall thickness of the tip 3 is heated unevenly and the shaping effect is not ideal is prevented.

In order to enhance the uniformity of the heating of the susceptor 1 by the heating member 2, the uniform heating of the catheter tip 3 is further ensured. In one specific embodiment, the counter bore 13 comprises a plurality of counter bores formed on the bottom wall of the base 1, and the counter bores 13 are uniformly distributed on the periphery of the annular counter sink 11.

Meanwhile, in order to ensure that the central cylinder 12 is heated, the central cylinder 12 at the inner side of the annular sinking groove 11 is a hollow cylinder, the top of the hollow cylinder is of a closed structure and is used for being abutted against the mandrel, and the bottom of the hollow cylinder is of an open structure and is used for installing the heating element 2.

The heating element 2 specifically includes a plurality of peripheral heating elements 21 and a central heating element 22, where the peripheral heating elements 21 are correspondingly installed in the plurality of counter bores 13, and preferably, the peripheral heating elements 21 and the counter bores 13 are in a one-to-one correspondence, so that the parts of the base 1, which are not perforated or grooved, can be uniformly heated, and thus, the heat on the base 1 at the periphery of the annular counter sink 11 is uniformly distributed and dispersed.

Further, the central heating member 22 enters the cavity of the central cylinder 12 from the bottom opening of the hollow cylinder for heating the central cylinder 12. Through this kind of setting method, can heat the inboard and the outside of annular heavy groove 11 simultaneously to guarantee to heat the position that contacts with pipe pointed end 3, and then guarantee that the pipe pointed end 3 of holding in annular heavy groove 11 is heated evenly.

In addition, by providing the peripheral heating member 21 and the central heating member 22, each region of the catheter tip 3 can be indirectly temperature-controlled, thereby avoiding occurrence of molding defects of the catheter tip 3.

In this embodiment, the outer side wall of the central cylinder 12 forms the inner side groove surface 11a of the annular countersink 11, the outer peripheral ring surface opposite to the inner side groove surface 11a forms the outer side groove surface 11b of the annular countersink 11, correspondingly, after the catheter tip 3 is accommodated in the annular countersink 11, the inner side wall surface of the catheter tip 3 is attached to the inner side groove surface 11a of the annular countersink 11, the outer side wall surface of the catheter tip 3 is attached to the outer side groove surface 11b of the annular countersink 11, and the catheter tip 3 is heated and molded by simultaneously heating the base 1 and the central cylinder 12 respectively.

Based on the conical structure of the catheter tip 3, the outer groove surface 11b gradually inwards receives from top to bottom to form an annular conical space of the annular countersink 11, and based on the flexible material of the catheter, the catheter tip 3 can follow the matching annular conical space before molding, and the catheter tip 3 is fixed after heated molding to form a molded product.

The top of the central cylinder 12 is provided with a plane which can be abutted against the end face of the front end of the mandrel, and for the convenience of processing, the plane is flush with the top wall of the base 1, meanwhile, a good positioning effect can be achieved, and the tip 3 of the catheter can be fully accommodated in the annular countersink 11 by enabling the length of the front end of the catheter, which protrudes out of the end face of the mandrel, to correspond to the depth of the annular countersink 11, so that the shaping effect is guaranteed.

In another specific embodiment, in order to facilitate the insertion of the catheter tip 3 into the annular countersink 11, an arc chamfer 14 is provided at the junction between the plane of the central cylinder 12 and the inner side groove surface 11a of the annular countersink 11, that is, at the junction between the top plane of the central upright post and the outer side wall of the central upright post, and further, an arc chamfer 14 is provided at the junction between the outer side groove surface 11b of the annular countersink 11 and the top wall of the base 1, and the arc chamfer 14 at the above-mentioned location can facilitate the smooth entry of the catheter tip 3 into the annular countersink 11, thereby improving the operation efficiency of the molding process.

Meanwhile, in order to ensure that the catheter tip 3 forms a round tip 3 at the pipe orifice after molding, an arc chamfer 14 is arranged at the joint of the bottom of the annular countersink 11 and the outer groove surface 11b, so that the round catheter tip 3 as shown in the figure can be formed.

In order to facilitate demolding of the catheter tip 3 on the molding tool, anti-adhesion coatings are coated on the inner groove surface 11a of the annular countersink 11, the outer groove surface 11b of the annular countersink 11 and the groove bottom of the annular countersink 11, preferably, the anti-adhesion coatings comprise polytetrafluoroethylene or parylene, and adhesion of the catheter tip 3 with the annular countersink 11 in the demolding process can be reduced by arranging the anti-adhesion coatings, so that the risk of burrs is avoided.

In another preferred embodiment, the base 1 comprises a metal block of solid construction, which facilitates the conduction of heat over the base 1, so as to distribute the heat more uniformly over the base 1.

The shape of the metal block is preferably cubic, the annular countersink 11, the hollow cylinder and the counter bore 13 are conveniently processed on the metal block, and the metal block is preferably in the form of a copper block or an aluminum block, so that the copper block or the aluminum block has good heat conductivity, the heat distribution can be improved, and the local heat accumulation is avoided.

The heating element 2 in this embodiment comprises a heating rod or a heating wire, preferably in the form of a heating rod, which can be attached to the wall surfaces of the hollow cylinder and the counter bore 13 by inserting the heating rod into the hollow cylinder and the counter bore 13, so that heat can be directly and efficiently transferred to the metal block.

Referring to fig. 5-6, the heating elements 2 are electrically connected with a temperature control system, so that different heating elements 2 can be at the same heating temperature by controlling the temperature, and the temperature of different areas can be controlled, thereby reducing the occurrence of forming defects of the tip 3.

The temperature control system is electrically connected with a foot switch controller, and the foot switch controller is electrically connected with a timer. In the molding process, the operation of the temperature control system can be controlled by operating the foot switch controller, and the prompt of the timer on molding time is further combined, so that different catheter tips 3 can be molded in the same time, and higher molding consistency is maintained.

When the catheter tip shaping tool is used, the power supply is firstly connected, the timing seconds of the timer and the heating temperature of the temperature control system are set, after the shaping tool is preheated, the catheter tip 3 rancour is put into the annular sinking groove 11 of the base 1, the end face of the mandrel in the inner cavity of the catheter is abutted to the top face of the central cylinder 12, meanwhile, the foot switch controller is stepped down, at the moment, the timer is counted down, after the timing is finished, the buzzer in the timer sounds, the catheter is taken out, and the tip 3 shaping is finished.

The shaping tool is simple in structure and easy to operate, heat can be distributed on the base 1 more uniformly, a finished product of the catheter tip 3 with good shaping and high consistency is obtained, consumable materials are not needed in the shaping process, and the production cost of the catheter is reduced.

The utility model also provides a catheter production system comprising the catheter tip shaping tool, which can reduce the reject ratio of catheter products and ensure the quality of finished products of the catheters.

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

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A tip shaping tool of a catheter is used for shaping the tip of the catheter, and is characterized by comprising: the base, the roof of the said base has annular sinking grooves, the inboard of the said annular sinking groove has central cylinders;

2. The catheter tip shaping tool according to claim 1, wherein the plurality of counter bores are uniformly distributed on the periphery of the annular countersink, and the center cylinder comprises a hollow cylinder;

3. The catheter tip shaping tool according to claim 1, wherein an outer side wall of the central cylinder forms an inner side groove surface of the annular countersink, and a peripheral annular surface opposite to the inner side groove surface forms an outer side groove surface of the annular countersink, and the outer side groove surface gradually inwards receives from top to bottom.

4. A catheter tip shaping tool as claimed in claim 3, wherein the top of the central cylinder is provided with a flat surface which can abut the end of the mandrel, the flat surface being flush with the top wall of the base.

5. The catheter tip shaping tool according to claim 4, wherein arc-shaped chamfers are arranged at the connection parts of the plane and the inner side groove surface, the connection parts of the outer side groove surface and the top wall of the base, and the connection parts of the groove bottom of the annular sinking groove and the outer side groove surface.

6. A catheter tip shaping tool according to claim 3, wherein the inner side groove surface, the outer side groove surface and the groove bottom of the annular countersink are coated with an anti-adhesion coating, and the anti-adhesion coating is made of polytetrafluoroethylene or parylene.

7. The catheter tip shaping tool of any one of claims 1-6, wherein the base comprises a solid structured metal block comprising a copper or aluminum block in the shape of a cube.

8. The catheter tip shaping tool of claim 7, wherein the heating element comprises a heating rod or a heating wire, and the heating element is connected with a temperature control system.

9. The catheter tip shaping tool of claim 8, wherein the temperature control system is connected with a foot switch controller, and the foot switch controller is connected with a timer.

10. A catheter production system comprising the catheter tip shaping tool of any one of claims 1-9.