Pipe body embedded with metal developing ring and mold

Abstract

The utility model provides a pipe body embedded with a metal developing ring and a mold, the pipe body comprises the metal developing ring, a tip pipe body and a butt joint pipe body, the second end of the tip pipe body is provided with a first butt joint surface, the outer wall of the second end of the tip pipe body is provided with an annular groove, and the outer diameter of the annular groove is matched with the inner diameter of the metal developing ring; the length of the annular groove is equal to that of the metal developing ring; the outer diameters of the metal developing ring, the tip tube body and the abutting tube body are equal, and the metal developing ring sleeves the second end of the tip tube body; the inner diameter of the tip pipe body is equal to that of the butt joint pipe body, the first end of the butt joint pipe body is a second butt joint face, and the second butt joint face of the butt joint pipe body is in hot melting butt joint with the first butt joint face of the tip pipe body. According to the pipe body embedded with the metal developing ring, the inner diameter and the outer diameter of the pipe body are consistent, the smoothness of the inner surface and the outer surface of the pipe body is improved, the mechanical property of the pipe is improved, and the pain of a patient can be further reduced by improving the surface performance of the plastic pipe due to the fact that the position of the developing ring and the material of the plastic pipe layer are different.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of medical catheters, in particular to a tube body embedded with a metal visualization ring and a mold. BACKGROUND

[0002] The metal visualization ring on the catheter and sheath is mainly used for positioning and identification during medical operations (such as interventional surgery). These visualization rings can clearly show the position and direction of the catheter or sheath under X-ray and other imaging equipment, helping doctors to accurately place the instrument at the target position, such as determining the precise position of the catheter in the blood vessel during vascular interventional surgery. At the same time, it is fixed on the catheter and sheath to ensure that it does not shift during the operation and affect the accuracy of positioning.

[0003] There are three conventional ways to achieve this structure:

[0004] The first way is to fix the metal visualization ring on the surface of the tube material by forging and pressing. After determining the position, the metal visualization ring is fixed by a device equipped with a forging die. The metal visualization ring produced in this way has a slight convex feeling on the outside surface of the tube material due to the slight wall thickness of the visualization ring.

[0005] The second way is to glue the metal visualization ring on the outer surface of the tube material, which introduces the glue material and reduces the biological safety of the catheter.

[0006] The third way is to place the metal visualization ring in the middle of the two thin-walled tubes and perform hot covering welding. The outer surface size of the tube material produced in this way exceeds the tolerance at the metal visualization ring.

[0007] The above ways of fixing the metal visualization ring make the catheter and sheath not very smooth when inserted into the human body, increasing the pain of the patient. CONTENT OF THE INVENTION

[0008] The present application provides a tube body embedded with a metal visualization ring and a mold. The metal visualization ring is simply and effectively fixed inside the tube body by the high-temperature shrinkage characteristics of the mold and the tube body through the way of a pointed end mold and a butt joint mold. The outer and inner diameters of the tube material at the connection and the surface are completed by the mold and extruded as the tube material. The metal visualization ring can be well fixed in the middle of the tube material, while the inner diameter size and the inner diameter surface effect of the tube material are very good. This prevents the metal visualization ring from having a convex and not smooth feeling, reduces the surface defects of the catheter and sheath caused by directly fixing the visualization ring on the tube body, and thus reduces the pain of the patient. The production efficiency, stability and product qualification rate are improved. The present application solves the problem of the existing visualization ring fixing method, which makes the catheter and sheath not smooth enough when inserted into the human body, increasing the pain of the patient.

[0009] In a first aspect, the embodiments of the present application provide a tube body with a metal developing ring embedded therein, comprising a metal developing ring, a tip tube body, and a butt joint tube body;

[0010] The tip tube body has opposite first and second ends, the second end of the tip tube body is provided with a first butt joint surface, and an outer wall of the second end of the tip tube body is provided with an annular groove, the outer diameter of the annular groove matches the inner diameter of the metal developing ring, and the length of the annular groove is equal to that of the metal developing ring.

[0011] The outer diameters of the metal developing ring, the tip tube body, and the butt joint tube body are equal, and the metal developing ring is sleeved with the second end of the tip tube body.

[0012] The inner diameters of the tip tube body and the butt joint tube body are equal, the butt joint tube body has opposite first and second ends, the first end of the butt joint tube body is a second butt joint surface, and the second butt joint surface of the butt joint tube body is hot-melt butt jointed with the first butt joint surface of the tip tube body.

[0013] In a second aspect, the present application provides a mold for processing the tip tube body in the tube body with the metal developing ring embedded therein, the mold comprising a tip mold and a first mandrel.

[0014] The tip mold has opposite first and second ends, a middle part of the tip mold is provided with a first through hole penetrating through the first and second ends, the first end of the first through hole is provided with a first counterbore, and the first end of the first counterbore is provided with a second counterbore; the inner diameter of the first counterbore is equal to the outer diameter of the annular groove, and the length of the first counterbore is equal to that of the annular groove.

[0015] The outer diameter of the first mandrel matches the inner diameter of the tip tube body, and the first mandrel is inserted into the tip tube body.

[0016] In a feasible implementation, the first mandrel comprises a first rod body and a first round head.

[0017] Both axial ends of the first rod body are fixedly arranged on the first round head.

[0018] In a feasible implementation, the first counterbore is provided with a hot-melt flat surface at an end away from the second counterbore.

[0019] After the second end of the tip tube body in a molten state is abutted against the hot-melt flat surface and cooled, the first butt joint surface is formed.

[0020] In a feasible implementation, a first chamfer is arranged at the connection between the first counterbore and the hot-melt flat surface.

[0021] A second chamfer is arranged at the connection between the first counterbore and the second counterbore.

[0022] The second flared hole is provided with a first wide-mouth groove at a first end away from the first flared hole.

[0023] In a feasible implementation, the outer wall of the tip mold is provided with a first connector and a first connecting groove for connecting the tip device.

[0024] In a third aspect, the application provides a mold for processing the pipe body with the embedded metal developing ring; the mold comprises a docking mold and a second mandrel;

[0025] The docking mold has opposite first and second ends, and a second through hole penetrating the first and second ends is arranged in the middle of the docking mold; the inner diameter of the second through hole is equal to the outer diameter of the metal developing ring, the metal developing ring is sleeved with the tip pipe body, and the tip pipe body and the docking pipe body are both inserted into the second through hole and are integrally heat-fused under the action of the tip device;

[0026] The outer diameter of the second mandrel matches the inner diameters of the tip pipe body and the docking pipe body, and the second mandrel is inserted into the tip pipe body and the docking pipe body.

[0027] In a feasible implementation, the second mandrel comprises a second rod body and a second round head;

[0028] The two axial ends of the second rod body are fixedly arranged in the second round head.

[0029] In a feasible implementation, the first end of the second through hole is provided with a second wide-mouth groove.

[0030] In a feasible implementation, the outer wall of the docking mold is provided with a second connector and a second connecting groove for connecting the tip device.

[0031] The pipe body with the embedded metal developing ring and the mold provided by the embodiments of the application have the following advantages: the first through hole is arranged in the tip mold, the first end of the first through hole is provided with the first flared hole, the first end of the first flared hole is provided with the second flared hole, the inner diameter of the second flared hole is equal to the outer diameters of the metal developing ring and the tip pipe body, and the inner diameter of the first flared hole is equal to the inner diameter of the metal developing ring; the second through hole is arranged in the docking mold;

[0032] During processing, the second end of the tip pipe body is inserted into the second flared hole and is heat-fused under the action of the tip device, the outer wall forms an annular groove matching the metal developing ring, the metal developing ring is inserted into the annular groove and is sleeved with the tip pipe body, and the tip pipe body and the docking pipe body are both inserted into the second through hole and are integrally heat-fused under the action of the tip device;

[0033] The pipe body embedded with metal developing ring and the mold provided by the application, the metal developing ring is embedded in the middle layer of the pipe material, effectively reducing the damage of the developing ring to the surface of the plastic pipe, and the inner diameter size of the pipe material is the same, further improving the smoothness of the inner and outer surfaces of the plastic pipe, improving the mechanical properties of the pipe material, and the position of the developing ring and the material of the plastic pipe layer can improve the performance of the surface of the plastic pipe, further reducing the pain of patients. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 is a structural schematic diagram of the pipe body embedded with metal developing ring provided by the application;

[0035] Figure 2 is a structural schematic diagram of the first mold provided by the application;

[0036] Figure 3 is a structural schematic diagram of the sharp-end mold;

[0037] Figure 4 is a structural schematic diagram of the first core shaft;

[0038] Figure 5 is a structural schematic diagram of the second mold provided by the application;

[0039] Figure 6 is a structural schematic diagram of the butt joint mold;

[0040] Figure 7 is a structural schematic diagram of the second core shaft.

[0041] BRIEF DESCRIPTION OF DRAWINGS:

[0042] 10-metal developing ring; 20-sharp-end pipe body; 30-butt joint pipe body; 40-sharp-end mold; 50-first core shaft; 60-butt joint mold; 70-second core shaft;

[0043] 21-ring-shaped groove; 41-first through hole; 42-first counterbore; 43-second counterbore; 44-hot melt plane; 45-first chamfer; 46-second chamfer; 47-first wide-mouth groove; 48-first connecting piece; 49-first connecting groove; 51-first rod body; 52-first round head; 61-second through hole; 62-second wide-mouth groove; 63-second connecting piece; 64-second connecting groove; 71-second rod body; 72-second round head. DETAILED DESCRIPTION

[0044] In order for those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described in the following 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 of ordinary skill in the art without creative work should fall within the scope of protection of the present application.

[0045] The metal visible and invisible rings on the catheter and sheath are mainly used for convenient positioning and identification during medical operations (such as interventional surgery). These visible and invisible rings can clearly show the position and direction of the catheter or sheath under the image equipment such as X-ray, helping doctors to accurately place the instrument at the target position, such as determining the accurate position of the catheter in the blood vessel in the blood vessel interventional surgery. At the same time, it is fixed on the catheter and sheath, ensuring that it will not shift during the operation process and affect the accuracy of positioning.

[0046] There are three common ways to fix the metal visible and invisible ring on the catheter and sheath. The first way is to fix the metal visible and invisible ring on the surface of the pipe material by forging and pressing, to determine the position, and then to fix the metal visible and invisible ring by forging and pressing equipment with forging and pressing mold. The metal visible and invisible ring produced in this way has a little convex feeling on the outside surface of the pipe material due to the wall thickness of the visible and invisible ring. The second way is to glue the metal visible and invisible ring on the outside surface of the pipe material, which will introduce the glue material and reduce the biological safety of the catheter. The third way is to heat the two layers of thin-walled pipes and place the metal visible and invisible ring in the middle of the two layers of thin-walled pipes for heat covering and welding. The outside surface size of the pipe material produced in this way is out of tolerance at the metal visible and invisible ring. The above two ways of fixing the metal visible and invisible ring are not very smooth when the catheter and sheath are inserted into the human body, which increases the pain of the patient.

[0047] The present application uses the way of sharp tip mold plus butt joint mold to simply and effectively fix the visible and invisible ring in the pipe body by the high temperature shrinkage characteristics of the mold and the pipe body. The outside and inside diameters of the pipe material at the connection and the surface are completed by the mold and the extruded pipe material, which can well fix the metal visible and invisible ring in the middle of the pipe material, while ensuring the inside diameter size and the inside diameter surface effect of the pipe material, preventing the convex and not smooth feeling at the metal visible and invisible ring, reducing the surface defects of the catheter and sheath caused by directly fixing the visible and invisible ring on the pipe body, and thus reducing the pain of the patient. The production efficiency, stability and product qualification rate are improved.

[0048] The specific structure of the pipe body with embedded metal visible and invisible ring and the mold provided by the present application will be described in detail below with reference to the drawings.

[0049] Reference Figure 1As shown, the embodiment of the present application provides a pipe body embedded with a metal developing ring, which comprises a metal developing ring 10, a tip pipe body 20 and a butt joint pipe body 30. The metal developing ring 10 and the butt joint pipe body 30 can be plastic pipe bodies, catheters, sheaths and the like. The material of the metal developing ring 10 can be medical grade 304 stainless steel, platinum-iridium alloy and the like.

[0050] The tip pipe body 20 has opposite first and second ends, as shown in the figure. Figure 1 As shown, the right end of the tip pipe body 20 is the bottom end, and the left end is the second end. The second end of the tip pipe body 20 is provided with a first butt joint surface, which is a vertical plane. The outer wall of the second end of the tip pipe body 20 is provided with an annular groove 21. The outer diameter of the annular groove 21 matches the inner diameter of the metal developing ring 10. The length of the annular groove 21 is equal to that of the metal developing ring 10.

[0051] The outer diameters of the metal developing ring 10, the tip pipe body 20 and the butt joint pipe body 30 are equal. The metal developing ring 10 is sleeved on the second end of the tip pipe body 20.

[0052] The inner diameters of the tip pipe body 20 and the butt joint pipe body 30 are equal. The butt joint pipe body 30 has opposite first and second ends. The first end of the butt joint pipe body 30 is a second butt joint surface. The second butt joint surface of the butt joint pipe body 30 is hot-melt butt jointed with the first butt joint surface of the tip pipe body 20.

[0053] The pipe body embedded with the metal developing ring provided by the present application has consistent inner and outer diameters of the pipe body, which improves the smoothness of the inner and outer surfaces of the pipe body, improves the mechanical properties of the pipe material, and further reduces the pain of patients by improving the performance of the surface of the plastic pipe and changing the position of the developing ring and the material of the plastic pipe layer.

[0054] Referring to Figures 2-4 As shown, the embodiment of the present application provides a mold for processing the tip pipe body 20 in the pipe body embedded with the metal developing ring. The mold comprises a tip mold 40 and a first core shaft 50.

[0055] The tip mold 40 has opposite first and second ends. The right end of the tip mold 40 is the first end, and the left end is the second end. The middle part of the tip mold 40 is provided with a first through hole 41 penetrating through the first and second ends. The first through hole 41 extends in the transverse direction. The first end of the first through hole 41 is provided with a first counterbore 42. The first end of the first counterbore 42 is provided with a second counterbore 43.

[0056] The first through hole 41, the first counterbore 42 and the second counterbore 43 are all circular holes and are distributed in a stepped manner. The inner diameter of the first counterbore 42 is equal to the outer diameter of the annular groove 21. The length of the first counterbore 42 is equal to that of the annular groove 21.

[0057] The outer diameter of the first mandrel 50 matches the inner diameter of the tip tube 20, and the first mandrel 50 is inserted into the tip tube 20;

[0058] During processing, the tip mold 40 is installed on the tip device, the first mandrel 50 is inserted into the tip tube 20, the left end of the tip tube 20 is inserted into the second counterbore 43, and after the process parameters are set on the device, the tip tube 20 becomes a flowing melt by heating the mold. The tip tube 20 is pushed to the left by the pushing force on the device, the tip tube 20 enters the first counterbore 42, forms a step, and then is cooled and fixed in the inner cavity of the tip mold 40 to form a step at the front end of the plastic pipe after forming.

[0059] Referring to Figure 4 In some embodiments, the first mandrel 50 includes a first rod body 51 and a first round head 52.

[0060] The two axial ends of the first rod body 51 are fixed to the first round head 52, so that the first mandrel 50 is inserted into the tip tube.

[0061] Referring to Figure 3 In some embodiments, the end of the first counterbore 42 away from the second counterbore 43 is provided with a hot melt plane 44, and the hot melt plane 44 is a vertical plane.

[0062] The second end of the tip tube in the fusion state is in abutment with the hot melt plane after cooling to form the first abutment surface, and the first abutment surface is a vertical plane, so as to facilitate the hot melt connection with the abutment tube.

[0063] In some embodiments, the connection between the first counterbore 42 and the hot melt plane is provided with a first chamfer 45, and the inner wall of the first chamfer 45 is tapered. Through the design of the first chamfer 45, the outer circle of the left end of the tip tube after cooling is tapered, thereby facilitating the sleeving of the metal developing ring 10 on the tip tube 20.

[0064] The connection between the first counterbore 42 and the second counterbore 43 is provided with a second chamfer 46, and the inner wall of the second chamfer 46 is tapered. Through the design of the second chamfer 46, the flowing melt enters the first counterbore 42 from the second counterbore 43.

[0065] The first end of the second counterbore 43 away from the first counterbore 42 is provided with a first wide-mouth groove 47, that is, the right end of the second counterbore 43 is provided with the first wide-mouth groove 47, and the first wide-mouth groove 47 can be a tapered groove, facilitating the insertion of the tip mold 40 into the second counterbore 43.

[0066] In some embodiments, the outer wall of the tip mold 40 is provided with a first connecting piece 48 and a first connecting groove 49 for connecting the tip device, which are matched with the used tip device, and the specific structure will not be described here.

[0067] Referring to Figures 5-7 As shown in the drawings, the embodiments of the present application provide a mold for processing the above-mentioned pipe body with a metal developing ring embedded therein; the mold comprises a docking mold 60 and a second mandrel 70;

[0068] The docking mold 60 has opposite first and second ends, and a second through hole 61 penetrating the first and second ends is arranged in the middle of the docking mold 60, and the second through hole 61 is a circular hole;

[0069] The inner diameter of the second through hole 61 is equal to the outer diameter of the metal developing ring 10, the metal developing ring is sleeved with the tip pipe body, and the tip pipe body and the docking pipe body are both inserted into the second through hole 61 and are integrally heat-fused under the action of the tip device;

[0070] The outer diameter of the second mandrel 70 is matched with the inner diameters of the tip pipe body and the docking pipe body, and the second mandrel 70 is inserted into the tip pipe body and the docking pipe body;

[0071] During processing, the docking mold 60 is installed on the tip device, the metal developing ring is sleeved with the tip pipe body, the second mandrel 70 is inserted into the tip pipe body and the docking pipe body, the tip pipe body and the docking pipe body are both inserted into the second through hole 61, and the first docking surface and the second docking surface are oppositely arranged;

[0072] After the process parameters are set on the device, the tip pipe body 20 and the docking pipe body 30 become a flowing melt by heating the mold, the pipe body is pushed to the developing ring by the two side thrusts on the device, the pipe body forms a straight-through type, and then the pipe body is cooled and fixed to form in the inner cavity of the docking mold 60, and the straight-through type developing ring of the formed pipe body is embedded in the middle of the pipe body.

[0073] Referring to Figure 7 As shown in the drawings, in some embodiments, the second mandrel 70 comprises a second rod body 71 and a second circular head 72;

[0074] The two axial ends of the second rod body 71 are fixedly arranged in the second circular head 72, so as to facilitate the axial insertion of the second rod body 71 into the tip pipe body 20 and the docking pipe body 30;

[0075] The second mandrel 70 and the first mandrel 50 can be the same component.

[0076] Referring to Figure 6As shown, in some embodiments, the first end of the second through hole 61 is provided with a second wide slot 62, so as to facilitate the insertion of the tip tube 20 and the mating tube 30 into the second through hole 61.

[0077] In some embodiments, the outer wall of the mating mold 60 is provided with a second connecting piece 63 and a second connecting groove 64 for connecting the tip device, the second connecting piece 63 and the second connecting groove 64 are matched with the used tip device, and the specific structure will not be described again.

[0078] It is easy to understand that, on the basis of the several embodiments provided in the present application, the skilled in the art can combine, split, recombine, etc. to obtain other embodiments, and these embodiments do not exceed the protection scope of the present application.

[0079] The above specific embodiments further illustrate the purpose, technical solutions and beneficial effects of the embodiments of the present application. It should be understood that the above is only a specific embodiment of the present application, and is not used to limit the protection scope of the embodiments of the present application. Any modification, equivalent replacement, improvement, etc. made on the basis of the technical solutions of the embodiments of the present application shall be included in the protection scope of the embodiments of the present application.

Claims

1. A tube body having a metal development ring embedded therein, characterized by: The metal developing ring (10), the tip tube body (20) and the docking tube body (30) have equal outer diameters, the metal developing ring (10) is sleeved with the second end of the tip tube body (20); The tip tube body (20) and the docking tube body (30) have equal inner diameters, the docking tube body (30) has opposite first and second ends, the first end of the docking tube body (30) is a second docking surface, and the second docking surface of the docking tube body (30) is hot-melt docked with the first docking surface of the tip tube body (20). The mold is used for processing the tip tube body in the tube body with the metal developing ring inlaid in the tip tube body according to claim 1, and the mold comprises: The tip mold (40) has opposite first and second ends, the middle part of the tip mold (40) is provided with a first through hole (41) penetrating through the first and second ends, the first end of the first through hole (41) is provided with a first counterbore (42), and the first end of the first counterbore (42) is provided with a second counterbore (43); the inner diameter of the first counterbore (42) is equal to the outer diameter of the annular groove (21), and the length of the first counterbore (42) is equal to that of the annular groove (21); 2. A mold characterized by: The first mandrel (50) has an outer diameter matched with the inner diameter of the tip tube body, and the first mandrel (50) is inserted into the tip tube body.

3. The mold according to claim 2, characterized in that: The first mandrel (50) comprises a first rod body (51) and a first round head (52); Both axial ends of the first rod body (51) are fixedly arranged in the first round head (52).

4. The mold according to claim 2, characterized in that: The end of the first counterbore (42) away from the second counterbore (43) is provided with a hot-melt flat surface (44); The second end of the tip tube body in the molten state is abutted against the hot-melt flat surface and cooled to form the first docking surface.

5. The mold according to claim 4, characterized in that: The connection part of the first counterbore (42) and the hot-melt flat surface is provided with a first chamfer (45); The connection part of the first counterbore (42) and the second counterbore (43) is provided with a second chamfer (46); The first end of the second counterbore (43) away from the first counterbore (42) is provided with a first wide groove (47).

6. The mold according to claim 2, characterized in that: The outer wall of the tip mold (40) is provided with a first connecting piece (48) and a first connecting groove (49) for connecting a tip device. ​ ​ 7. A mold characterized by: The mold is used for processing the pipe body with the metal developing ring as claimed in claim 1; the mold comprises; a docking mold (60) having opposite first and second ends, a middle part of the docking mold (60) being provided with a second through hole (61) penetrating the first and second ends; an inner diameter of the second through hole (61) being equal to an outer diameter of the metal developing ring (10), the metal developing ring being sleeved with the tip pipe body, the tip pipe body and the docking pipe body being inserted into the second through hole (61) and being integrally heat-fused under the action of a tip device; a second mandrel (70) having an outer diameter matched with inner diameters of the tip pipe body and the docking pipe body, the second mandrel (70) being inserted into the tip pipe body and the docking pipe body.

8. The mold according to claim 7, characterized in that: the second mandrel (70) comprises a second rod body (71) and a second round head (72); both axial ends of the second rod body (71) are fixedly provided in the second round head (72).

9. The mold according to claim 7, characterized in that: a first end of the second through hole (61) is provided with a second wide-mouth groove (62).

10. The mold according to claim 9, characterized in that: an outer wall of the docking mold (60) is provided with a second connecting piece (63) and a second connecting groove (64) for connecting the tip device.

Images