Balloon catheter coating plugging tool

Abstract

The utility model relates to a balloon catheter coating plugging tool which comprises a plugging shell which is buckled and spliced, the plugging shell is of a conical column structure in the axial direction and is provided with a plurality of clamping fins at intervals, the clamping fins surround the outer side wall of the plugging shell, and the plugging shell is sleeved with a movable rubber ring. The technical problems encountered in the coating process of the outer pipe can be solved, an immersion end opening of the outer pipe is blocked, and the operation efficiency is improved while the coating quality is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of medical device preparation, and in particular to a balloon catheter coating occlusion tool. Background Art

[0002] At present, the hydrophilic coating of balloon catheters is mainly applied to the surface of the outer tube. The coating liquid is divided into a base coating liquid and a surface coating liquid. During coating, the outer tube needs to be completely immersed in the coating liquid. At this time, the outer tube is a distal component, one end of which has been welded to the balloon, and the other end is not connected to other components. During coating, immersion can be started from the balloon end. After coating, the coating liquid on the balloon needs to be wiped clean. It can also be started from the outer tube end. The outer tube needs to be sealed in advance, and the sealing position needs to be opened or cut after coating.

[0003] The above two dipping coating schemes have their own advantages and disadvantages. Since the balloon needs to be wiped when coating from the balloon end, the process is relatively cumbersome. Currently, most of them adopt the method of sealing or plugging the outer tube for coating.

[0004] Sealing the outer tube is to perform compression molding on the end of the outer tube to permanently seal the outer tube, and cut off the sealed part after coating. This method is similar to balloon immersion, and the outer tube needs to be compression molded in advance and cut afterwards. The process is relatively complicated. Sealing the outer tube becomes another problem of coating the outer tube because the outer tube is small in size and the sealing material is not easy to remove after sealing. Utility Model Content

[0005] The purpose of the present application is to provide a balloon catheter coating plugging tool, which can solve the technical problems encountered during the coating process of the outer tube, plug the immersion port of the outer tube, ensure the coating quality and improve the operating efficiency.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a balloon catheter coating sealing tool, including a sealing shell that is assembled by buckling. The sealing shell is a conical column structure in its axial direction and has a plurality of clip-on fins arranged at intervals. The clip-on fins are wrapped around the outer wall of the sealing shell, and the sealing shell is sleeved with a movable rubber ring.

[0007] In an optional embodiment, the clamping fin comprises an annular frustum fin, and the inclination direction of the frustum fin is the same as the inclination direction of the sealing shell.

[0008] In an optional embodiment, the blocking shell includes split arc plates, the arc plates are connected by rubber films, and the two arc plates form a shell cavity of the tooling after being assembled and buckled.

[0009] In an optional embodiment, a split compression spring is connected between the arc-shaped plates, two ends of the split compression spring are respectively connected to the inner wall of the arc-shaped plate, and the split compression spring is installed in the shell cavity.

[0010] In an optional embodiment, a blocking ball head is connected to the thin conical end of the blocking shell, and the blocking ball head is used to prevent the rubber ring from detaching from the thin conical end of the blocking shell.

[0011] In an optional embodiment, the thick cone end of the blocking shell is connected to a handheld shell, and the handheld shell is a hilt-shaped structure, including a handheld ball head, a handle and a connecting part, and the connecting part is arranged between the thick cone end of the blocking shell and the handle.

[0012] In an optional embodiment, the connecting portion is gradually connected and smoothly transitioned in the process of extending from the rough cone end of the blocking shell to the handle.

[0013] In an optional embodiment, the connecting portion and the handle are both assembled structures that are snap-assembled, and the arc plate of the sealing shell is integrally formed with the connecting portion and the cutting structure of the handle and is sealed and spliced ​​together using the rubber film.

[0014] In an optional embodiment, a supporting compression spring is disposed inside the handle, and the supporting compression spring is connected to the connecting portion between the handle and the connecting portion.

[0015] In an optional embodiment, the blocking ball head and the handheld ball head are both integral spherical structures and are made of rubber, and the blocking shell, the handheld shell and the snap-on fins are all made of polytetrafluoroethylene.

[0016] The sealing shell, which is conical in the axial direction, can be inserted into the outer tube with its thin cone end to seal the immersion port of the outer tube. After the coating process is completed, the sealing tool can be separated from the outer tube by pulling it out, thus abandoning the traditional compression molding and cutting operation. At the same time, it can facilitate the removal of the sealing tool from the outer immersion port, greatly simplifying the operation difficulty and improving the operation efficiency.

[0017] The rubber ring which is sleeved on the sealing shell and can move along its axial direction can move the rubber ring to different axial positions. Since the rubber ring has a strong elastic variable, it can be combined with the conical sealing shell when moving to different positions to form rubber rings with different outer diameters. Through the cooperation of the rubber ring and the immersion port of the outer tube, it can adapt to outer tubes of different sizes, thereby broadening the applicability of the application angle.

[0018] A plurality of snap-fit ​​fins surrounding the outer side wall of the sealing shell can hold the rubber ring in place. Through the cooperation of the two, reliable sealing cooperation between the rubber ring and the immersion port of the outer tube can be ensured while effectively limiting the rubber ring.

[0019] The plugging shell assembled by snapping can be given a certain deformation amount. The size of the conical column part of the plugging shell can be reduced by pressing or holding the internal pressure, so that the rubber ring can quickly return to the minimum diameter position, releasing the sealing state of the rubber ring on the immersion port of the outer tube, making it easy to remove the overall plugging tooling.

[0020] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 This is a schematic diagram of the structure of the balloon catheter coating occlusion tooling in this application;

[0023] Figure 2 This is a schematic diagram of the coordination relationship between the balloon catheter coating sealing tool and the outer tube in this application.

[0024] icon:

[0025] 1-blocking shell; 11-clamping fin; 12-arc plate; 13-rubber film; 14-shell cavity;

[0026] 2-Rubber ring;

[0027] 3-Handle compression springs;

[0028] 4-Block the ball head;

[0029] 5-handheld housing; 51-handheld ball head; 52-handle; 53-connecting part;

[0030] 6-support compression spring;

[0031] 7-outer tube; 71-immersion port. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0033] In the description of this application, it should be noted that the terms "inside", "outside", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the application is usually placed when in use, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0034] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" 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 direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0035] The balloon catheter coating and plugging tool in the present application is mainly used in the coating process of the hydrophilic coating of the balloon catheter, and is specifically used in the application scenario where the outer tube end is previously immersed in the coating liquid and the outer tube is immersed in the port for plugging in advance.

[0036] See also Figure 1-Figure 2 The balloon catheter coating blocking tool in the utility model has a main structure including a blocking shell 1 assembled by buckling. The blocking shell 1 is a conical column structure in its axial direction and has a plurality of clip-on fins 11 arranged at intervals. The clip-on fins 11 surround the outer wall of the blocking shell 1. The blocking shell 1 is sleeved with a movable rubber ring 2.

[0037] During the blocking process, the thin conical end of the blocking shell 1 is extended into the immersion port 71 of the outer tube 7, and the immersion port 71 is blocked by the rubber ring 2 sleeved on the outer wall of the blocking shell 1, so as to achieve blocking of the outer tube 7 by the blocking tool before it is immersed in the coating liquid.

[0038] The clamping fins 11 include a plurality of fins 11 that are spaced apart in the axial direction of the sealing shell 1, and can clamp the rubber ring 2 at different axial positions of the sealing shell 1. The rubber ring 2 can be moved to different axial positions of the sealing shell 1. Since the rubber ring 2 itself has high elasticity, it can be elastically deformed to different outer diameters at different positions to adapt to the sealing of outer tubes 7 with different diameters.

[0039] Furthermore, the rubber ring 2 is fixed by a plurality of clamping fins 11 arranged at intervals in the axial direction, ensuring that the rubber ring 2 is effectively and reliably blocked on the immersion port 71 of the outer tube 7. The clamping fins 11 are arranged around the outer wall of the blocking shell 1, and can limit the position of the rubber ring 2 in the circumferential direction, so that the rubber ring 2 corresponds to the radial plane of the immersion port 71 of the outer tube 7, which is conducive to forming a tight sealing state during blocking.

[0040] The buckle-jointed assembly facilitates the installation of the compression spring inside the sealing shell 1, and can form the overall structure of the cone column of the sealing shell 1 through the compression spring supported by the internal outward tension.

[0041] The clamping fin 11 includes an annular frustum fin. Specifically, the frustum fin protrudes from the outer side wall of the plugging shell 1 to form an annular boss barb structure of the plugging shell 1. The inclination direction of the frustum fin is the same as that of the plugging shell 1, which can effectively clamp the rubber ring 2. In the conical column structure state of the plugging shell 1, the rubber ring 2 can be fixedly clamped on the gradually expanding side step of the frustum fin.

[0042] The sealing shell 1 is specifically composed of two arc plates 12 that are cut in half. Each arc plate 12 is a semi-cylindrical arc plate 12, which are spliced ​​and connected to form an integral conical column structure through a rubber film 13 in the middle. The sealing shell 1 presents an integral conical column structure in its axial direction. The two arc plates 12 form a shell cavity 14 inside the sealing tool after being snap-fitted and assembled.

[0043] In order to combine two semi-cylindrical arc plates 12 of the same shape into a conical column structure, a compression spring 3 is connected between the arc plates 12. The two arc plates 12 are expanded and squeezed outward by the elastic force of the compression spring 3. Combined with the elastic connection of the rubber film 13 between the two arc plates 12, the overall conical column structure can be maintained, which is beneficial for extending the outer tube 7 into the immersion port 71 through the fine cone end when sealing the outer tube 7.

[0044] Both ends of the split compression spring 3 are connected to the inner wall of the arc plate 12 respectively, and the split compression spring 3 is installed in the shell cavity 14 , so that the split compression spring 3 can be fully expanded in the shell cavity 14 .

[0045] The overall conical column structure of the sealing shell 1 utilizes not only the outward elastic force of the split compression spring 3, but also the outward elastic force of the support compression spring 6 arranged on the axially outer side of the thick cone end. By respectively arranging the split compression spring 3 and the support compression spring 6 on both sides of the axial direction of the sealing tool, combined with the constraint of the rubber ring 2 sleeved on the outer side of the sealing shell 1, and the elastic connection of the rubber film 13, a relatively stable conical column structure can be maintained.

[0046] The thin conical end of the blocking shell 1 is connected with a blocking ball head 4 , and the blocking ball head 4 is used to prevent the rubber ring 2 from being separated from the thin conical end of the blocking shell 1 .

[0047] For easy operation, the thick cone end of the blocking shell 1 is connected to a handheld shell 5, which is a hilt-shaped structure, including a handheld ball head 51, a handle 52, and a connecting portion 53, and the connecting portion 53 is arranged between the thick cone end of the blocking shell 1 and the handle 52. Further, from the perspective of easy picking, the connecting portion 53 is gradually connected and smoothly transitioned during the extension process from the thick cone end of the blocking shell 1 to the handle 52.

[0048] The gradually tapering and smoothly transitioned setting is also associated with the structural formation of the conical column structure of the sealing shell 1. Specifically, the thick end of the connecting portion 53 is connected to the end of the arc plate 12, so that the arc plate 12 is expanded outward relative to the other end connected to the blocking ball head 4. Combined with the elastic release of the rubber film 13, the conical column structure can be maintained.

[0049] The setting of the handheld ball head 51, on the one hand, can facilitate picking up, and on the other hand, since the outer tube 7 component is light, it is not easy to enter the coating liquid during dipping. When the thin cone end of the sealing tool and the rubber ring 2 are extended into the immersion port 71 of the outer tube 7, the handheld ball head 51 can be used as a counterweight to increase the weight of the drooping tail end, making it easier for the sealing tool as a whole to enter the coating liquid and facilitate the dipping operation.

[0050] From the perspective of the overall processing of the sealing tool, the connecting part 53 and the handle 52 are both assembled structures by interlocking. The arc plate 12 of the sealing shell 1 is integrally formed with the cutting structure of the connecting part 53 and the handle 52, and is sealed and connected by a common rubber film 13.

[0051] That is to say, the cutting structure of the blocking shell 1 and the cutting structure of the handheld shell 5 are an integrated structure, and then the overall connection is achieved by splicing the upper and lower sides.

[0052] Furthermore, the upper and lower side structures are sealed and connected by a rubber film 13 therebetween, which can prevent the coating liquid from entering the cavity on the one hand, and on the other hand can be combined with the support compression spring 6 arranged inside the handle 52 to maintain the conical column structure of the shell 1 in a natural state.

[0053] By connecting the support compression spring 6 to the joint portion between the handle 52 and the connecting portion 53 , the support compression spring 6 and the opposing compression spring 3 can correspond to each other, thereby enhancing the retention of the conical column blocking shell 1 .

[0054] The blocking ball head 4 and the hand-held ball head 51 arranged at both ends of the blocking tool are not separately arranged structures, but are both integral spherical structures, which are convenient for connection with the middle structure and can form a certain degree of restraint on the middle split structure.

[0055] At the same time, the blocking ball head 4 and the hand-held ball head 51 are both made of rubber, which has strong elastic force and can be easily deformed by pressing during use.

[0056] Since the sealing shell 1, the handheld shell 5 and the snap-on fins 11 need to be immersed in the coating liquid during use, the materials of the sealing shell 1, the handheld shell 5 and the snap-on fins 11 are all polytetrafluoroethylene, so that the overall tooling structure has excellent chemical stability, corrosion resistance, high lubricity and non-stickiness, electrical insulation and good anti-aging endurance, and is also conducive to the movement of the rubber ring 2 on the sealing shell 1.

[0057] Based on the setting of the spliced ​​compression spring 3 and the supporting compression spring 6, after the sealing process is completed, the elastic force of the compression spring can be overcome by pressing the sealing shell 1 and the handheld shell 5, and the outer diameter of the sealing shell 1 can be reduced, so that the rubber ring 2 can quickly elastically shrink and return to the minimum diameter state, disengaging from the sealing of the immersion port 71 of the outer tube 7, making it convenient to remove the tooling.

[0058] The balloon catheter coating blocking tool in the utility model only blocks the immersion port 71 of the outer tube 7, does not affect the surface coating of the outer tube 7, reduces the subsequent cleaning process, is easy to load and unload, and greatly improves the operating efficiency.

[0059] During long-term use, based on the high-throughput elastic force of the rubber ring 2, it can be easily disassembled and replaced by crossing the blocking ball head 4, which will not be described in detail here.

[0060] It should be noted that, in the absence of conflict, the features in the embodiments of this application may be combined with each other.

[0061] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A balloon catheter coating occlusion tool, characterized in that: The invention comprises a plugging shell which is assembled by buckling. The plugging shell is of a conical column structure in the axial direction and is provided with a plurality of clamping fins at intervals. The clamping fins surround the outer side wall of the plugging shell. The plugging shell is sleeved with a movable rubber ring.

2. The balloon catheter coating occlusion tool according to claim 1, characterized in that: The clamping fin comprises an annular frustum fin, and the inclination direction of the frustum fin is the same as the inclination direction of the blocking shell.

3. The balloon catheter coating occlusion tool according to claim 1, characterized in that: The blocking shell comprises split arc plates, which are connected by rubber films, and the two arc plates form a shell cavity of the tooling after being buckled and assembled.

4. The balloon catheter coating occlusion tool according to claim 3, characterized in that: A split compression spring is connected between the arc-shaped plates, two ends of the split compression spring are respectively connected to the inner wall of the arc-shaped plate, and the split compression spring is installed in the shell cavity.

5. The balloon catheter coating occlusion tool according to claim 3, characterized in that: The thin cone end of the blocking shell is connected with a blocking ball head, and the blocking ball head is used to prevent the rubber ring from detaching from the thin cone end of the blocking shell.

6. The balloon catheter coating occlusion tool according to claim 5, characterized in that: The thick cone end of the blocking shell is connected to a handheld shell. The handheld shell is a hilt-shaped structure, including a handheld ball head, a handle and a connecting part. The connecting part is arranged between the thick cone end of the blocking shell and the handle.

7. The balloon catheter coating occlusion tool according to claim 6, characterized in that: The connecting portion is gradually connected and smoothly transitioned in the process of extending from the thick cone end of the blocking shell to the handle.

8. The balloon catheter coating occlusion tool according to claim 6, characterized in that: The connecting portion and the handle are both assembled structures that are snap-fitted together. The arc plate of the sealing shell is integrally formed with the connecting portion and the split structure of the handle and they are sealed and spliced ​​together using the rubber film.

9. The balloon catheter coating occlusion tool according to claim 6, characterized in that: A support compression spring is arranged inside the handle, and the support compression spring is connected to the connecting portion between the handle and the connecting portion.

10. The balloon catheter coating occlusion tool according to claim 6, characterized in that: The blocking ball head and the hand-held ball head are both integral spherical structures and are made of rubber. The blocking shell, the hand-held shell and the clamping fins are all made of polytetrafluoroethylene.

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