A tooling for testing the patency of a microcatheter lumen

Abstract

This utility model discloses a microcatheter lumen patency testing fixture, belonging to the field of medical device technology. The fixture includes a base; a support column is fixedly connected to the upper end of the base; a liquid inlet pipe is fixedly connected to the upper end of the support column; a liquid channel is formed on the inner side of the support column; a hollow tube is embedded in the support column; and a tapered hollow tube is fixedly connected to the front end of the hollow tube; a groove is formed at the front end of the tapered hollow tube. By setting the tapered hollow tube and the groove, clean water is introduced into the inner side of the microcatheter. Simultaneously, the tapered hollow tube can support microcatheters of different diameters, improving testing efficiency and adapting to microcatheters of different sizes, thus enhancing practicality.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, and more specifically, relates to a tooling for testing the patency of a microcatheter lumen. Background Technology

[0002] A microcatheter is a relatively small, reinforced catheter, generally defined as one with a diameter of 0.70 to 1.30 mm. Microcatheters are primarily used, with the support of a guiding catheter, to deliver a finer diameter catheter along a guidewire into a blood vessel, not just limited to the opening of large vessels. This provides greater support for the guidewire and facilitates guidewire replacement. With the increasing complexity of interventional treatments, the clinical application of microcatheters is becoming more widespread. Before using a microcatheter, the patency of the lumen should be checked to prevent injury to the patient due to substandard manufacturing processes.

[0003] For example, patent application number CN201822158079.7 describes a balloon for increasing the support of a microcatheter. Its structure includes a balloon, a hollow catheter (microcatheter channel), a distal catheter, a proximal catheter, and a catheter seat. Marker rings are provided at both ends inside the balloon. The distal catheter is located at the right end of the balloon, the microcatheter channel is located inside the distal catheter, the proximal catheter is inserted into the right end of the distal catheter, and the left end of the catheter seat is inserted into the right end of the proximal catheter. This invention provides a balloon with a central cavity of 0.7 mm, which can accommodate a microcatheter. It is mainly used in interventional procedures for chronic coronary occlusive lesions. It can increase the support of the microcatheter and assist the microcatheter and guidewire in puncturing coronary occlusive lesions. This solves the problem of the guidewire easily entering the subintimal region when simply supported by a microcatheter for occlusive lesions, as well as the problem of insufficient support of the guiding catheter during interventional procedures.

[0004] However, the balloon used to increase the support of the microcatheter still has low detection efficiency in the process of detecting the smoothness of the microcatheter lumen and is not practical in the detection process. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a tooling for detecting the patency of a microcatheter lumen, which improves the detection efficiency and can be adapted to microcatheters of different sizes, thus improving its practicality.

[0006] This utility model discloses a microcatheter lumen patency testing fixture, comprising a base; a support column fixedly connected to the upper end of the base; a liquid inlet pipe fixedly connected to the upper end of the support column; a liquid channel formed on the inner side of the support column; a hollow tube embedded in the support column; and a tapered hollow tube fixedly connected to the front end of the hollow tube; a groove formed at the front end of the tapered hollow tube.

[0007] Preferably, the hollow tube has a pair of through holes; an airbag is fitted over the outside of the pair of through holes.

[0008] Preferably, a sealing ring is fitted on the outside of the connection between the hollow tube and the support column to seal the connection between the hollow tube and the base.

[0009] Preferably, the support column is equipped with a flow meter to detect the flow rate inside the liquid channel.

[0010] Preferably, the airbag is made of polyethylene.

[0011] Preferably, the hollow tube is made of stainless steel.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] (1) By setting a conical hollow tube and a groove, clean water is introduced into the inside of the microcatheter. At the same time, the conical hollow tube can support microcatheters of different diameters, which improves the detection efficiency and can be adapted to microcatheters of different sizes, thus improving practicality.

[0014] (2) By setting up airbags and through holes, the compatibility with different microcatheters is further expanded, the detection efficiency is improved, and the detection effect is improved by providing support. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of this utility model.

[0017] The following are the labels in the diagram: 10. Base; 11. Support column; 12. Liquid inlet pipe; 13. Flow meter; 14. Sealing ring; 15. Hollow tube; 16. Airbag; 17. Conical hollow tube; 18. Groove; 19. Liquid channel; 20. Through hole. Detailed Implementation

[0018] Specific Implementation Example 1: Please refer to... Figure 1-2 A fixture for testing the patency of a microcatheter lumen includes a base 10; a support column 11 is fixedly connected to the upper end of the base 10; a liquid inlet pipe 12 is fixedly connected to the upper end of the support column 11; a liquid channel 19 is formed on the inner side of the support column 11; a hollow tube 15 is embedded in the support column 11; a tapered hollow tube 17 is fixedly connected to the front end of the hollow tube 15; a groove 18 is formed at the front end of the tapered hollow tube 17; by setting the tapered hollow tube 17 and the groove 18, clean water is introduced into the inner side of the microcatheter. At the same time, the tapered hollow tube 17 can support microcatheters of different diameters, improving the testing efficiency and adapting to microcatheters of different sizes, thus improving practicality.

[0019] Please see Figure 2 The hollow tube 15 has a pair of through holes 20; an airbag 16 is fitted over the outside of the pair of through holes 20 on the hollow tube 15.

[0020] Please see Figure 2 A sealing ring 14 is fitted on the outside of the connection between the hollow tube 15 and the support column 11 to seal the connection between the hollow tube 15 and the base 10.

[0021] Please see Figure 1 The support column 11 is equipped with a flow meter 13 to detect the flow rate inside the liquid channel 19.

[0022] Please see Figure 1 The airbag 16 is made of polyethylene.

[0023] Please see Figure 1 The hollow tube 15 is made of stainless steel; by setting the air bag 16 and the through hole 20, the adaptability to different microcatheters is further expanded, the detection efficiency is improved, and the detection effect is improved by providing support.

[0024] During operation, the airbag 16 is squeezed to expel the air inside. Then, the microcatheter is fitted onto the outside of the conical hollow tube 17, and the inside of the microcatheter is opened by the conical hollow tube 17. Clean water is introduced into the inside of the liquid inlet tube 12, which allows clean water to be introduced into the inside of the microcatheter while supporting it. The clean water is poured into the microcatheter through the slot 18 to check the patency of the inner lumen of the microcatheter.

[0025] When the inner diameter of the microcatheter is large, and the inner diameter of the microcatheter is larger than the outer circumference diameter of the conical hollow tube 17, the microcatheter is pulled outward of the air bladder 16 when it is fitted, and then clean water is poured into the inner side of the liquid inlet tube 12. After the clean water is poured into the liquid channel 19, the clean water flows from the through hole 20 to the inner side of the air bladder 16. After the air bladder 16 expands, it supports the inner side of the microcatheter. Then the water flows into the inner side of the microcatheter through the slot 18 and the right port of the conical hollow tube 17. The outer side of the conical hollow tube 17 or the air bladder 16 is used to open the microcatheter, which improves the detection efficiency.

[0026] The specification and claims use certain terms to refer to specific components. Those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to." "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error.

[0027] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes said element.

[0028] The foregoing description presents and describes several preferred embodiments of this application. However, as mentioned above, it should be understood that this application is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the application concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this application should be within the protection scope of the appended claims.

Claims

1. A microcatheter lumen patency detection tool, comprising a base (10); the upper end of the base (10) is fixedly connected with a support column (11); the upper end of the support column (11) is fixedly connected with a liquid inlet pipe (12); the inner side of the support column (11) is provided with a liquid channel (19); the support column (11) is embedded with a hollow tube (15); characterized in that, It also includes a tapered hollow tube (17) fixedly connected to the front end of the hollow tube (15); the front end of the tapered hollow tube (17) has a slot (18).

2. The microcatheter lumen patency testing fixture according to claim 1, characterized in that: The hollow tube (15) has a pair of through holes (20); an airbag (16) is fitted on the outside of the pair of through holes (20) of the hollow tube (15).

3. The microcatheter lumen patency testing fixture according to claim 1, characterized in that: A sealing ring (14) is fitted on the outside of the connection between the hollow tube (15) and the support column (11) to seal the connection between the hollow tube (15) and the base (10).

4. The microcatheter lumen patency testing fixture according to claim 1, characterized in that: The support (11) is fitted with a flow meter (13) to detect the flow rate inside the liquid channel (19).

5. The microcatheter lumen patency testing fixture according to claim 2, characterized in that: The airbag (16) is made of polyethylene.

6. The microcatheter lumen patency testing fixture according to claim 1, characterized in that: The hollow tube (15) is made of stainless steel.

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