Large balloon pressure test adapter

Abstract

The utility model discloses a large balloon pressure test adapter, which comprises a main body and a screw cap, the screw cap is connected with one end of the main body, the main body is internally provided with a placing groove, the center of the screw cap is provided with a through hole, the placing groove is internally provided with a liquid passing needle, one end of the liquid passing needle penetrates through the through hole and extends to the outer side of the screw cap, and the other end of the liquid passing needle penetrates through the through hole. The outer wall of the hydrotubation needle is sleeved with a balloon pin, and the balloon pin is sleeved with a sealing assembly. According to the large balloon pressure test adapter provided by the utility model, the liquid passing needle is additionally arranged at the joint of the balloon pin in the adapter, so that a radial support is provided for the balloon pin, and the balloon pin is prevented from collapsing and influencing the sealing performance.

Description

Technical Field

[0001] The utility model belongs to the technical field of adapters, and particularly relates to a large balloon pressure test adapter. Background Art

[0002] Balloon types can be divided into small balloons with a diameter of 2 - 5 mm, ordinary balloons with a diameter of 5 - 12 mm, and large balloons with a diameter greater than 12 mm. Small balloons are generally used for coronary arteries, tibial and peroneal arteries below the popliteal artery, and relatively thin renal and vertebral arteries; ordinary balloons are generally used for carotid arteries, renal arteries, iliofemoral popliteal arteries, etc., while large balloons are generally used for infrarenal abdominal aorta, iliac arteries, and vena cava.

[0003] During the production of balloon catheters, it is necessary to conduct spot checks on the balloon components to ensure that their performance meets the requirements, and the pressure resistance test is one of the most important items. When conducting the pressure resistance test, the balloon needs to be connected to a hydraulic bursting tester, and an adapter needs to be set at the connection between the balloon and the hydraulic bursting tester.

[0004] In the related art, the adapter structure of the small balloon is used for the large balloon. The nut drives the collar to press the rubber tube to seal the balloon pin. However, since there is no support inside the pin, when the wall thickness of the balloon pin is relatively thin, the strength of the balloon pin itself is insufficient to resist the radial pressure of the rubber tube, resulting in a collapse phenomenon and inability to seal. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a large balloon pressure test adapter to solve the problem of inability to seal caused by large radial pressure in the prior art.

[0006] For this reason, the utility model provides a large balloon pressure test adapter, including: a main body and a nut. The nut is connected to one end of the main body. A placement groove is provided inside the main body. A through hole is provided at the center of the nut. A liquid injection needle is provided in the placement groove. One end of the liquid injection needle passes through the through hole and extends to the outside of the nut. A balloon pin is sleeved on the outer wall of the liquid injection needle, and a sealing component is sleeved on the balloon pin.

[0007] Preferably, the liquid injection needle includes a needle part and a fixing part. The needle part is fixedly installed at one end of the fixing part. A through drain hole is provided at the center of the needle part and the fixing part. The balloon pin is sleeved on the outside of the needle part. One end of the balloon pin is in contact with the fixing part. The sealing component is sleeved on the outside of the balloon pin. One end of the sealing component is in contact with the nut, and the other end of the sealing component is in contact with the fixing part.

[0008] Preferably, the fixing part is slidably connected to the placement groove.

[0009] Preferably, a liquid passage hole and a connection hole are provided inside the main body. The liquid passage hole communicates with the placement groove, and the connection hole communicates with the liquid passage hole.

[0010] Preferably, the axes of the placement groove, the liquid discharge hole, the liquid passage hole, and the connection hole are on the same straight line.

[0011] Preferably, a first sealing ring is provided between the liquid injection needle and the end face of the placement groove.

[0012] Preferably, the sealing assembly includes a collar and a second sealing ring. The second sealing ring is provided at one end of the collar.

[0013] Preferably, a tapered surface is provided at one end of the collar close to the second sealing ring, and the tapered surface is used to press the second sealing ring tightly.

[0014] Preferably, there are two sealing assemblies, and the two sealing assemblies are oppositely arranged on the outer wall of the balloon pin.

[0015] Preferably, the nut is threadedly connected to the main body.

[0016] Advantageous effects:

[0017] 1. The present utility model provides a large balloon pressure test adapter. A liquid injection needle is added at the connection of the balloon pin inside the adapter to provide radial support for the balloon pin, preventing the balloon pin from collapsing and affecting the sealing performance.

[0018] 2. In the present utility model, two oppositely arranged sealing structures press the second sealing ring tightly through a collar with a tapered surface, reducing the inner diameter of the second sealing ring and pressing the outside of the balloon pin. At the same time, the liquid injection needle supports the inside of the balloon pin, further enhancing the sealing performance. Description of the drawings

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 It is a schematic structural diagram of Embodiment 1 of a large balloon pressure test adapter provided by the present utility model.

[0021] Figure 2 It is a cross-sectional view of Embodiment 1 of a large balloon pressure test adapter provided by the present utility model.

[0022] 1 - Main body, 11 - Placing groove, 12 - Liquid passage hole, 13 - Connecting hole, 2 - Nut, 21 - Through hole, 3 - Liquid injection needle, 31 - Needle part, 32 - Fixing part, 33 - Drainage hole, 4 - Balloon pin, 5 - Sealing assembly, 51 - Collar, 52 - Second sealing ring, 6 - First sealing ring. Detailed implementation mode

[0023] The content of the present utility model can be more easily understood by referring to the following detailed description of the preferred implementation methods of the present utility model and the included embodiments. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the art to which this invention belongs. In case of conflict, the definitions in this specification shall prevail.

[0024] Embodiment 1:

[0025] There is provided a large balloon pressure test adapter as shown in Figure 1 - Figure 2 , which includes: a main body 1 and a nut 2. The nut 2 is connected to one end of the main body 1. A placing groove 11 is provided inside the main body 1. A through hole 21 is provided at the center of the nut 2. A liquid injection needle 3 is provided in the placing groove 11. One end of the liquid injection needle 3 passes through the through hole 21 and extends to the outside of the nut 2. A balloon pin 4 is sleeved on the outer wall of the liquid injection needle 3, and a sealing assembly 5 is sleeved on the balloon pin 4. The nut 2 and the main body 1 are connected by threads.

[0026] The liquid injection needle 3 includes a needle part 31 and a fixing part 32. The needle part 31 is fixedly installed at one end of the fixing part 32. A through drainage hole 33 is provided at the center of the needle part 31 and the fixing part 32. The balloon pin 4 is sleeved on the outside of the needle part 31. One end of the balloon pin 4 is in contact with the fixing part 32. The sealing assembly 5 is sleeved on the outside of the balloon pin 4. One end of the sealing assembly 5 is in contact with the nut 2, and the other end of the sealing assembly 5 is in contact with the fixing part 32. The fixing part 32 is slidably connected to the placing groove 11. A liquid passage hole 12 and a connecting hole 13 are provided inside the main body 1. The liquid passage hole 12 is communicated with the placing groove 11, and the connecting hole 13 is communicated with the liquid passage hole 12. The axes of the placing groove 11, the drainage hole 33, the liquid passage hole 12 and the connecting hole 13 are on the same straight line. A first sealing ring 6 is provided between the liquid injection needle 3 and the end face of the placing groove 11.

[0027] The sealing assembly 5 includes a collar 51 and a second sealing ring 52. The second sealing ring 52 is provided at one end of the collar 51. A conical surface is provided at one end of the collar 51 close to the second sealing ring 52 for pressing the second sealing ring 52. Two sealing assemblies 5 are provided, and the two sealing assemblies 5 are oppositely arranged on the outer wall of the balloon pin 4.

[0028] Working principle: Tighten the nut 2, and the nut 2 applies pressure to the sealing assembly 5 and the liquid injection needle 3. The two collars 51 press the second sealing ring 52 inward, the liquid injection needle 3 presses the first sealing ring 6 against the end face of the placement groove 11, the liquid injection needle 3 supports the inside of the balloon pin 4 to prevent collapse, and the sealing assembly 5 presses and seals the balloon pin 4 to ensure the sealing performance.

Claims

1. A large balloon pressure test adapter, characterized in that Comprising: A main body and a nut, the nut is connected to one end of the main body, a placement groove is provided inside the main body, a through hole is provided at the center of the nut, a liquid injection needle is provided in the placement groove, one end of the liquid injection needle passes through the through hole and extends to the outside of the nut, a balloon pin is sleeved on the outer wall of the liquid injection needle, and a sealing assembly is sleeved on the balloon pin.

2. The large balloon pressure test adapter according to claim 1, characterized in that, The liquid injection needle includes a needle part and a fixing part, the needle part is fixedly installed at one end of the fixing part, a through drain hole is provided at the center of the needle part and the fixing part, the balloon pin is sleeved on the outside of the needle part, one end of the balloon pin is in contact with the fixing part, the sealing assembly is sleeved on the outside of the balloon pin, one end of the sealing assembly is in contact with the nut, and the other end of the sealing assembly is in contact with the fixing part.

3. The large balloon pressure test adapter according to claim 2, characterized in that, The fixing part is slidably connected to the placement groove.

4. A large balloon pressure test adapter according to claim 3, characterized in that, A liquid injection hole and a connection hole are provided inside the main body, the liquid injection hole is communicated with the placement groove, and the connection hole is communicated with the liquid injection hole.

5. The large balloon pressure test adapter according to claim 4, characterized in that, The axes of the placement groove, the drain hole, the liquid injection hole and the connection hole are on the same straight line.

6. A large balloon pressure test adapter according to claim 1, characterized in that, A first sealing ring is provided between the liquid injection needle and the end face of the placement groove.

7. A large balloon pressure test adapter according to claim 1, characterized in that, The sealing assembly includes a collar and a second sealing ring, and the second sealing ring is provided at one end of the collar.

8. A large balloon pressure test adapter according to claim 7, characterized in that, A conical surface is provided at one end of the collar close to the second sealing ring, and the conical surface is used to press the second sealing ring tightly.

9. A large balloon pressure test adapter according to claim 1 or 8, characterized in that There are two sealing assemblies, and the two sealing assemblies are arranged oppositely on the outer wall of the balloon pin.

10. A large balloon pressure test adapter according to claim 1, characterized in that The nut is threadedly connected to the main body.

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