A corrugated artificial blood vessel shaping device

Abstract

The utility model belongs to the technical field of artificial blood vessel processing equipment, and specifically relates to a corrugated artificial blood vessel shaping device, which comprises: a tubular outer mold with at least one end open, the inner wall of the outer mold is provided with a corrugated tube-shaped groove; a mold core, the airbag mold core extends into the outer mold, the airbag mold core expands to form a cylindrical structure, and the balloon wall of the airbag mold core presses against the inner wall of the outer mold. The utility model adopts an expandable airbag mold core as an inner mold, which cooperates with the outer mold after inflation to extrude the artificial blood vessel material to obtain a corrugated artificial blood vessel.

Description

Technical Field

[0001] The utility model belongs to the technical field of artificial blood vessel processing equipment, and in particular relates to a corrugated artificial blood vessel shaping device. Background Art

[0002] At present, the main reason why domestic artificial blood vessels are difficult to promote is the blood permeability of the product. The product is prone to bleeding after a period of use. In order to improve the flexibility of artificial blood vessels and reduce bleeding after surgery, it is necessary to form a uniform corrugated structure on the surface of the vascular fabric. However, in the existing technology, there is a lack of shaping devices for such corrugated artificial blood vessels. Therefore, it is necessary to develop new technologies to meet the production needs of corrugated artificial blood vessels. Utility Model Content

[0003] In order to solve the deficiencies of the prior art, the utility model provides a corrugated artificial blood vessel shaping device. The corrugated artificial blood vessel shaping device provided by the utility model can shape the artificial blood vessel to form a uniform corrugated structure to obtain a corrugated artificial blood vessel.

[0004] The technical solution provided by the utility model is as follows:

[0005] A corrugated artificial blood vessel shaping device, comprising:

[0006] A tubular outer mold with at least one end open, wherein the inner wall of the outer mold is provided with a corrugated tube-shaped groove;

[0007] and an airbag mold core, wherein the airbag mold core extends into the outer mold, the airbag mold core expands to form a cylindrical structure, and the bag wall of the airbag mold core presses against the inner wall of the outer mold.

[0008] Based on the above technical solution, the airbag mold core can expand after being inflated, and it cooperates with the outer mold as an inner mold to extrude the artificial blood vessel material between the two, thereby forming a corrugated artificial blood vessel.

[0009] Furthermore, the airbag mold core is connected to a pressurizing device at one end.

[0010] Based on the above technical solution, the airbag mold core can be easily inflated and pressurized to expand it into place.

[0011] Specifically, the air source port of the pressurizing device is connected to an air heater, or the pressurizing device is a hot air blower.

[0012] Based on the above technical solution, hot air can be used to inflate and pressurize the airbag mold core, and it can be heated during the pressurization process, so that the artificial blood vessel material can be heat-formed, simplifying the shaping steps of the artificial blood vessel.

[0013] Specifically, in the structure where both ends of the outer mold are open, the length of the airbag mold core is at least greater than the length of a section of the outer mold.

[0014] Based on the above technical solution, a plurality of series-connected outer molds can share the same airbag mold core, thereby increasing production efficiency.

[0015] Specifically, the outer mold is formed by two semi-circular tube-shaped half molds. The corrugated artificial blood vessel shaping device also includes an outer mold support structure, and the outer mold support structure includes push plates that can be relatively squeezed, and each push plate has a semi-circular arc push plate corresponding to the half mold, which is used to hold the outer mold from both sides.

[0016] Specifically, the corrugated artificial blood vessel shaping device is arranged in the heating device.

[0017] Based on the above technical solution, the artificial blood vessel can also be heated and shaped after being formed.

[0018] Specifically, the wall surface of the expanded airbag mold core and the inner wall surface of the outer mold form a uniform corrugated tube-shaped gap, and the thickness of the corrugated tube-shaped gap is less than or equal to the wall thickness of the corrugated artificial blood vessel.

[0019] Based on the above technical solution, a corrugated artificial blood vessel can be formed in the gap.

[0020] Specifically, the inner diameter of the bellows-shaped gap is 6-34 mm.

[0021] Specifically, the gap between the wave crests of the corrugated structure of the outer wall of the corrugated tube-shaped gap is 3-5 mm, preferably 4 mm.

[0022] Specifically, the length of the airbag core is greater than that of the corrugated artificial blood vessel, and the length of the corrugated artificial blood vessel is 15-60 cm.

[0023] Based on the utility model, not only can large-caliber corrugated artificial blood vessels be formed to meet the production requirements of large-caliber corrugated artificial blood vessels, but also the production requirements of long-size corrugated artificial blood vessels can be met.

[0024] Beneficial effects of the utility model:

[0025] 1) The corrugated artificial blood vessel shaping device provided by the utility model can produce a corrugated artificial blood vessel, and the shaping method is simple and practical;

[0026] 2) The corrugated artificial blood vessel shaping device provided by the utility model can produce corrugated artificial blood vessels of various calibers, including large-sized corrugated artificial blood vessels, and can produce corrugated artificial blood vessels of various lengths. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the corrugated artificial blood vessel shaping device provided by the utility model.

[0028] Figure 2 The utility model is a schematic diagram of the structure of the airbag mold core part of the corrugated artificial blood vessel shaping device provided by the utility model.

[0029] Figure 3 The utility model is a front view of the corrugated artificial blood vessel shaping device provided by the utility model.

[0030] Attached Figure 1 , 2 , 3, the structure list represented by each number is as follows:

[0031] 1. Outer mold; 101. Half mold; 2. Airbag mold core; 3. Pressurizing device; 4. Bellows-shaped gap. DETAILED DESCRIPTION

[0032] The principles and features of the present invention are described below. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0033] It should be noted that when a part or component is considered to be "connected", "located", or "assembled" on another part or component, it may be directly disposed on the other part or component or there may be a central part or component at the same time. The terms "left", "right", "upper", "lower" and similar expressions used herein are for illustrative purposes only.

[0034] In a specific embodiment, Figure 1 , 2 As shown, the corrugated artificial blood vessel shaping device comprises: a tubular outer mold 1 with at least one end open, the inner wall of the outer mold 1 is provided with a corrugated tube-shaped groove; and a balloon mold core 2, the balloon mold core 2 extends into the outer mold 1, the balloon mold core 2 expands to form a cylindrical structure, and the balloon wall of the balloon mold core 2 presses against the inner wall of the outer mold 1. This technical solution uses an expandable balloon mold core as an inner mold, which cooperates with the outer mold after inflation to squeeze the artificial blood vessel material to form a corrugated artificial blood vessel.

[0035] Example 1

[0036] Based on the above specific implementation methods, Figure 1 , 2 As shown, the wall surface of the expanded airbag core 2 and the inner wall surface of the outer mold 1 form a uniform corrugated tube-shaped gap 4, and the thickness of the corrugated tube-shaped gap 4 is less than or equal to the wall thickness of the corrugated artificial blood vessel. Based on this technical solution, a corrugated artificial blood vessel can be formed in the gap.

[0037] Example 2

[0038] Based on the above specific implementation methods, Figure 2 As shown, the airbag mold core 2 is connected to a constant temperature pressurizing device 3 at one end. The corrugated artificial blood vessel shaping device is arranged in the heating device to meet the shaping work of the corrugated artificial blood vessel after forming.

[0039] Example 3

[0040] Based on the above specific implementation methods, Figure 2 As shown, the air source port of the pressurizing device 3 is connected to the air heater. In another embodiment, the pressurizing device 3 is a hot air blower. Based on this technical solution, the artificial blood vessel material can be heated and formed while the airbag mold core is inflated and pressurized with hot air.

[0041] Example 4

[0042] On the basis of the above embodiments, the outer mold 1 has a structure with openings at both ends, and the length of the airbag mold core 2 is greater than the length of the multi-stage outer mold 1 .

[0043] Example 5

[0044] Based on the above embodiments, Figure 3 As shown, the outer mold 1 is formed by two semi-circular tube-shaped half molds 101. The corrugated artificial blood vessel shaping device also includes an outer mold support structure, which includes push plates that can be relatively squeezed, each push plate has a semi-circular arc push plate corresponding to the half mold 101, and is used to hold the outer mold 1 from both sides. Based on this structure, it is convenient to put in the inner mold and the artificial blood vessel material.

[0045] When using the corrugated artificial blood vessel shaping device provided by the utility model to shape the corrugated artificial blood vessel, first put the artificial blood vessel material on the uninflated airbag mold core, and then move the whole thing between the two half molds that are still separated from each other, and then start the push plate, the two half molds are close to each other to form an outer mold. Then start the pressurizing device to expand the airbag mold core and squeeze the artificial blood vessel, so that the corrugated artificial blood vessel is formed between the inner wall of the corrugated tube-shaped groove of the outer mold and the outer wall surface of the airbag mold core. For the pressurizing device with a normal temperature air source, the heating box can be started after molding, and it can be taken out at about 180°C for a total of 5-30 minutes to complete the shaping. For a high-temperature air source, the artificial blood vessel material can be heated and shaped during the molding process to obtain a corrugated artificial blood vessel.

[0046] The corrugated artificial blood vessel shaping device provided by the utility model is used to shape the corrugated artificial blood vessel, and the inner diameter of the obtained corrugated artificial blood vessel can be 6-34 mm, including the large-diameter corrugated artificial blood vessels that are difficult to produce. The length of the obtained corrugated artificial blood vessel can be 15-60 cm, covering a wide range of sizes. The gap between the crests of the obtained corrugated artificial blood vessel is 3-5 mm, which meets various needs. The thickness of the obtained corrugated artificial blood vessel is flexible and can be adjusted according to specific needs.

[0047] The above are only preferred embodiments of the present invention and are not intended to limit the present invention in any form. Any ordinary technician in the industry can smoothly implement the present invention as shown in the drawings and above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the present invention using the technical content disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the protection scope of the technical solution of the present invention.

Claims

1. A corrugated artificial blood vessel shaping device, characterized in that: include: A tubular outer mold (1) with at least one end open, wherein the inner wall of the outer mold (1) is provided with a corrugated tube-shaped groove; and an airbag mold core (2), the airbag mold core (2) extending into the outer mold (1), the airbag mold core (2) expanding to form a cylindrical structure, the bag wall of the airbag mold core (2) pressing against the inner wall of the outer mold (1).

2. The corrugated artificial blood vessel shaping device according to claim 1, characterized in that: The airbag mold core (2) is connected to a pressurizing device (3) at one end.

3. The corrugated artificial blood vessel shaping device according to claim 2, characterized in that: The air source port of the pressurizing device (3) is connected to an air heater, or the pressurizing device (3) is a hot air blower.

4. The corrugated artificial blood vessel shaping device according to claim 1, characterized in that: The outer mold (1) has openings at both ends; The length of the airbag mold core (2) is at least greater than the length of a section of the outer mold (1).

5. The corrugated artificial blood vessel shaping device according to claim 1, characterized in that: The outer mold (1) is formed by two semi-circular tube-shaped half molds (101).

6. The corrugated artificial blood vessel shaping device according to claim 5, characterized in that: The corrugated artificial blood vessel shaping device also includes an outer mold support structure, and the outer mold support structure includes push plates that can be relatively squeezed, each of the push plates has a semicircular arc push plate corresponding to the half mold (101), which is used to hold the outer mold (1) from both sides.

7. The corrugated artificial blood vessel shaping device according to claim 6, characterized in that: The corrugated artificial blood vessel shaping device is arranged in the heating device.

8. The corrugated artificial blood vessel shaping device according to any one of claims 1 to 7, characterized in that: The wall surface of the expanded airbag mold core (2) and the inner wall surface of the outer mold (1) form a uniform corrugated tube-shaped gap (4), and the thickness of the corrugated tube-shaped gap (4) is less than or equal to the wall thickness of the corrugated artificial blood vessel.

9. The corrugated artificial blood vessel shaping device according to claim 8, characterized in that: The inner diameter of the bellows-shaped gap (4) is 6-34 mm; The gap between the wave crests of the corrugated structure of the outer wall of the corrugated tube-shaped gap (4) is 3-5 mm.

10. The corrugated artificial blood vessel shaping device according to claim 8, characterized in that: The length of the airbag mold core (2) is greater than that of the corrugated artificial blood vessel, and the length of the corrugated artificial blood vessel is 15-60 cm.

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