Narrow-distance available heat sealing machine on balloon catheter

Abstract

The utility model relates to a heat sealing machine with an available narrow distance on a balloon catheter. The heat sealing machine comprises an operating platform, a clamping device and a heat sealing head, a containing groove is formed in the operation platform in the length direction, and a heat sealing groove is formed in the middle of the operation platform and communicates with the containing groove. The heat sealing head is located in the heat sealing groove and comprises an upper welding mold and a lower welding mold which are distributed up and down, and the upper welding mold and the lower welding mold are spliced to form a welding hole; the upper welding die and the lower welding die are both provided with inclined faces on one side face, and the inclined faces incline towards the welding holes, so that the thickness of the welding die at the welding holes is reduced. According to the utility model, the welding die with the conical head is designed through the inclined plane, so that the length of the welding hole can be obviously shortened, and the welding hole can be used for welding narrower parts such as a third position and a fourth position of the balloon catheter. And heat is more concentrated through a die contact type heating welding mode and cannot be dissipated to other parts, so that damage to the other parts is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of balloon catheter welding, especially a heat sealing machine available for narrow distance on balloon catheter. BACKGROUND

[0002] The common method for treating myocardial infarction includes percutaneous transluminal coronary angioplasty (PTCA), which requires a balloon catheter to deliver a stent to the blood vessel lesion site, expand the stent to support the inner wall of the diseased blood vessel, increase blood flow, and increase myocardial blood supply. The balloon catheter structure diagram is shown in Figure 5 The proximal tube is made of 304 stainless steel, and the transition tube, distal tube, balloon and end tube are made of plastic material (PEBAX72D, nylon 11 and nylon 12). The bonding points include four positions: position 1: the proximal tube (stainless steel 304 tube) is bonded with the transition tube (plastic tube), and the bonding distance is 5-10mm; position 2: the transition tube (plastic tube) is bonded with the distal tube (plastic tube), and the bonding distance is 5-10mm; position 3: the distal tube is bonded with the proximal tube of the balloon, and the bonding distance is 2-4mm; position 4: the end tube is bonded with the distal tube of the balloon, and the bonding distance is 2-4mm.

[0003] As a common hot-pressing die welding, the balloon catheter is welded by high-temperature hot-pressing, but limited by the volume of the heating tank and thermocouple in the die, the volume of the die is large, so it can only be used for welding at positions 1 and 2.

[0004] A patent with publication number CN110561761A and name of a balloon catheter bonding device discloses a device using hot air welding, which uses a heating pipe to heat strong current air, and the heated gas flows to positions 1 and 2 of the balloon catheter through a specially customized nozzle. Because the hot air nozzle air flow is strong, the escaping hot air will splash to positions 3 and 4 of the balloon catheter, so common hot air welding cannot be used for welding at positions 3 and 4 of the balloon catheter.

[0005] Therefore, there is a lack of welding equipment that can weld narrow distances without damaging other parts in the field of balloon catheter welding process. UTILITY MODEL CONTENT

[0006] The purpose of the present application is to provide a heat sealing machine available for narrow distance on balloon catheter, which aims to solve the problems existing in the prior art.

[0007] The embodiment of the application provides a heat sealing machine available for a balloon catheter with a narrow distance, the heat sealing machine comprises an operation platform, a clamping device and a heat sealing head; the operation platform is in a long plate shape, a containing groove is formed on the operation platform along the length direction, a heat sealing groove penetrating through the operation platform upwards and downwards is arranged at the middle part of the operation platform, and the heat sealing groove is communicated with the containing groove; the clamping device is correspondingly arranged above the containing groove; the heat sealing head is arranged in the heat sealing groove, and the heat sealing head comprises an upper welding die and a lower welding die arranged upwards and downwards; opposite surfaces of the upper welding die and the lower welding die are both provided with a half welding hole penetrating through left and right sides; and the upper welding die and the lower welding die are combined to form a complete welding hole; the upper welding die and the lower welding die are both provided with an inclined surface on one side, and the inclined surface is inclined to the welding hole direction so that the welding die thickness at the welding hole is reduced.

[0008] Further, the operation platform is connected with the moving end of the driving air cylinder, and the operation platform is moved left and right through the driving air cylinder.

[0009] Further, the width of the heat sealing groove is greater than the width of the heat sealing head, and the heat sealing head is always located in the heat sealing groove when the operation platform is moved left and right.

[0010] Further, the clamping device comprises four clamping air cylinders, the clamping air cylinders are arranged on the left and right sides of the heat sealing head in pairs, the clamping air cylinders are vertically arranged, and the clamping air cylinders are provided with pressing blocks at the end of the telescopic rod.

[0011] Further, the upper welding die is arranged on the upper driving arm, and the lower welding die is arranged on the lower driving arm; the upper welding die and the lower welding die are both in a cuboid shape, are provided with a groove on one side, and the inclined surface is located in the groove.

[0012] Further, the heat sealing machine further comprises a base, a machine box and a support frame assembly, the machine box is fixedly arranged on the base, the support frame assembly is fixedly arranged on the base, and the clamping device, the heat sealing head and the operation platform are arranged on the support frame assembly.

[0013] The welding die with a tapered head is designed through the inclined surface, the welding hole length can be obviously shortened, the welding die can be used to weld the narrow parts such as the third and fourth positions of the balloon catheter, the heat is more concentrated in the mode of die contact type heating, the heat cannot be dissipated to other parts, and thus damage to other parts is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a whole structure schematic view of the utility model.

[0015] Figure 2 It is a whole structure schematic view of the heat sealing head.

[0016] Figure 3 It is a front structure schematic view of the welding die.

[0017] Figure 4 Figure 1 is a schematic view of the back structure of a welding mold.

[0018] Figure 5 Figure 2 is an explanatory view of a welding position of a balloon catheter.

[0019] In the figure:

[0020] 1, operation platform; 2, driving cylinder; 3, containing groove; 4, heat sealing groove; 5, heat sealing head; 6, upper welding mold; 7, lower welding mold; 8, welding hole; 9, upper driving arm; 10, lower driving arm; 11, groove; 12, inclined surface; 13, clamping cylinder; 14, locking button; 15, base; 16, machine box; 17, support frame assembly. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0022] As shown in Figure 1 Figure 1, a heat sealing machine available for balloon catheter with narrow distance, the heat sealing machine includes an operation platform 1, a clamping device and a heat sealing head 5. The operation platform 1 is a long plate extending left and right, and the operation platform 1 is connected to the moving end of a driving cylinder 2, the driving cylinder 2 is horizontally installed, and the operation platform 1 is moved left and right by the driving cylinder 2. The operation platform 1 is provided with a containing groove 3 along the length direction. The middle part of the operation platform 1 is provided with a heat sealing groove 4 penetrating up and down, the heat sealing groove 4 is communicated with the containing groove 3, and the heat sealing groove 4 has an opening at the rear side of the operation platform 1, and the balloon catheter to be welded is embedded and placed in the containing groove 3 and the balloon catheter welding part is exposed in the heat sealing groove 4. The heat sealing head 5 is located in the heat sealing groove 4, and the heat sealing head 5 includes an upper welding mold 6 and a lower welding mold 7 distributed up and down, and the opposite surfaces of the upper welding mold 6 and the lower welding mold 7 are both provided with a left-right penetrating half welding hole, as shown in Figure 3 Figure 2, the upper welding mold 6 and the lower welding mold 7 are combined to form a complete welding hole 8. The upper welding mold 6 and the lower welding mold 7 are moved up and down to close the balloon catheter clamped in the welding hole 8, and the welding mold is heated and pressurized for welding.

[0023] As shown in Figure 2As shown, the upper welding die 6 is installed on the upper driving arm 9, the lower welding die 7 is installed on the lower driving arm 10, the upper welding die 6 is driven to ascend and descend by the upper driving arm 9, the lower welding die 7 is driven to ascend and descend by the lower driving arm 10, and the welding dies are closed up. The upper welding die 6 and the lower welding die 7 are both cuboids, and a groove 11 is arranged on the left side or the right side. Figure 3 and Figure 4 As shown, the groove 11 is provided with an inclined surface 12, the inclined surface 12 is inclined to the welding hole 8, the thickness of the welding die at the welding hole 8 is reduced, the actual welding area on the balloon catheter is 1mm-5mm, and the damage of the welding die to other parts of the balloon catheter is prevented.

[0024] The clamping device is installed above the accommodating groove 3, and the clamping device includes four clamping cylinders 13, which are arranged on the left and right sides of the heat sealing head 5 in pairs. The clamping cylinders 13 are vertically installed, and the ends of the telescopic rods of the clamping cylinders 13 are provided with pressing blocks. The two clamping cylinders 13 on the left side are connected in linkage, and the two clamping cylinders 13 on the right side are connected in linkage, so that one locking button 14 can control the synchronous lifting of the two clamping cylinders 13 on the same side. The left locking button 14 controls the synchronous lifting of the two clamping cylinders 13 on the left side of the heat sealing head 5, and the right locking button 14 controls the synchronous lifting of the two clamping cylinders 13 on the right side of the heat sealing head 5.

[0025] The heat sealing machine further includes a base 15, a machine box 16, and a support frame assembly 17. The machine box 16 is fixedly installed on the base 15, and the support frame assembly 17 is fixedly installed on the base 15. The cylinder bodies of the clamping cylinders 13, the heat sealing head 5, the driving cylinder 2, and the operation platform 1 are all installed on the support frame assembly 17. The support frame assembly 17 provides support for the above structure. Specifically, the operation platform 1 is slidably connected to the support frame assembly 17 through a slide rail or the like. The machine box 16 is provided with a touch screen, and the welding mode and the welding temperature can be set through the touch screen. Figure 2 As shown, the heat sealing head 5 is a modular structure and can be detachably installed on the support frame assembly 17. Through the detachable structure, the heat sealing head 5 can be detached for replacement or maintenance. The upper welding die 6 and the lower welding die 7 can be aligned and corrected in advance before being installed on the machine.

[0026] In the initial state, the clamping cylinder 13 and the heat sealing head 5 are not started, the upper welding die 6 and the lower welding die 7 of the heat sealing head 5 are separated, the parts of the balloon catheter to be welded are placed in the accommodating groove 3, and the welding position is located in the heat sealing groove 4. The locking button 14 is pressed to press and fix the left and right sides of the balloon catheter through the pressing cylinder, the upper welding die 6 and the lower welding die 7 are started, the temperature and the welding position are determined, the upper welding die 6 and the lower welding die 7 are closed to make the welding position in the welding hole 8 for heat sealing welding. After the first welding is completed, the upper welding die 6 and the lower welding die 7 are opened, and the four clamping cylinders 13 are retracted, the operation platform 1 is driven by the driving cylinder 2 to move, the heat sealing head 5 is aligned with the second welding position, then the four clamping cylinders 13 are lowered to fix the balloon catheter, the heat sealing head 5 is closed to the second welding position for heat sealing welding, after the welding is completed, the clamping cylinder 13 is opened, and the balloon catheter is taken out.

[0027] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and the present application can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting from any point of view.

Claims

1. A heat sealer usable on a narrow-pitch balloon catheter, characterized in that, The heat sealing machine includes an operating platform, a clamping device, and a heat sealing head. The operating platform is long and has a receiving groove along its length. A heat sealing groove runs vertically through the middle of the operating platform and is connected to the receiving groove. The clamping device is installed above the receiving groove. The heat sealing head is located inside the heat sealing groove and includes an upper welding mold and a lower welding mold distributed vertically. The upper and lower welding molds each have a half-welding hole running horizontally through their opposite surfaces. When the upper and lower welding molds are joined together, they form a complete welding hole. Both the upper and lower welding molds have an inclined surface on one side, which slopes towards the welding hole to reduce the thickness of the welding mold at the welding hole.

2. The heat sealer for narrow-pitch applications on balloon catheters according to claim 1, characterized in that, The operating platform is connected to the moving end of the drive cylinder, which moves the operating platform left and right.

3. The narrow-pitch heat sealer for balloon catheters according to claim 2, characterized in that, The width of the heat sealing groove is greater than the width of the heat sealing head, and the heat sealing head is always located in the heat sealing groove when the operating platform moves left and right.

4. The heat sealer for narrow-pitch applications on the balloon catheter according to claim 1, characterized in that, The clamping device includes four clamping cylinders, arranged in pairs on the left and right sides of the heat-sealing head. The clamping cylinders are installed vertically, and pressure blocks are installed at the ends of the telescopic rods of the clamping cylinders.

5. The narrow-pitch heat sealer for balloon catheters according to claim 1, characterized in that, The upper welding mold is mounted on the upper drive arm, and the lower welding mold is mounted on the lower drive arm. The upper welding mold and the lower welding mold are the same in that they are cubic in shape, and a groove is provided on one side. The inclined surface is located in the groove.

6. The narrow-pitch heat sealer for balloon catheters according to claim 1, characterized in that, The heat sealing machine also includes a base, a housing, and a support frame assembly. The housing is fixedly mounted on the base, the support frame assembly is fixedly mounted on the base, and the clamping device, heat sealing head, and operating platform are all mounted on the support frame assembly.

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