Medical equipment connecting pipe with high sealing performance

Abstract

The utility model discloses a medical equipment connecting pipe with high sealing performance, relates to the technical field of medical instruments, and comprises a connecting pipe and a joint which is connected with the connecting pipe and used for being connected with medical equipment, the joint comprises an outer pipe, an inner pipe is fixedly connected inside the outer pipe, the outer wall of the inner pipe is fixedly sleeved with a sealing assembly, and the sealing assembly is fixedly connected with the connecting pipe. The connecting pipe can be connected to the inner pipe and the sealing assembly in a sleeving mode, a low-tightness assembly is arranged on the outer pipe, and the connecting pipe is clamped on the outer wall of the inner pipe through the low-tightness assembly. According to the medical equipment connector, the connecting pipe is fixed to the inner ring under the action of the low-tension semi-ring and the pressing plate and is tightly attached to the inner pipe under the action of the low-tension semi-ring, the first sealing ring and the second sealing ring, the sealing performance is greatly improved, efficient sealing of the medical equipment connector is guaranteed, fluid or gas leakage is effectively prevented, and meanwhile the sealing performance of the medical equipment connector is improved. The connection stability is enhanced, accidental falling is effectively prevented, and the safety and reliability of the medical equipment are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a medical device connecting pipe with high sealing performance. Background Art

[0002] The medical device connecting pipe is an indispensable part of medical devices. It is responsible for connecting different medical devices or components to ensure the normal progress of functions such as fluid transmission and gas exchange during the medical process. These connecting pipes usually need to have characteristics such as high sealing performance, stability, and anti-detachment to ensure the safety and effectiveness of the medical process.

[0003] At present, for traditional medical device connecting pipes, threaded joints are provided at the ends of the connecting pipes, and the connection between the connecting pipe and the medical device is achieved through the threaded joints. Among them, the connection between the connecting pipe and the threaded joint is to apply sealant at the connection, and it is used after the sealant dries.

[0004] However, over time, the sealant material may gradually age and harden due to environmental factors such as ultraviolet rays, temperature changes, pollution, etc., thus losing its original bonding ability and resulting in detachment; or the sealant is not applied under appropriate temperature, humidity and other conditions during construction, the coating is uneven, and the curing time is not sufficient, etc., resulting in the detachment of the sealant after long-term use; or the connecting pipe is often pulled, and the connection part between the connecting pipe and the threaded joint is excessively worn during use, and the bonding force of the sealant may be weakened, resulting in detachment. All of the above will affect the sealing performance between the connecting pipe and the threaded joint and cannot ensure the safety and reliability of the medical process. Content of the Utility Model

[0005] The purpose of the utility model is to solve the problems existing in the prior art, and a medical device connecting pipe with high sealing performance is proposed.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A medical device connecting pipe with high sealing performance includes a connecting pipe and a joint connected to the connecting pipe and used for connecting with a medical device. The joint includes an outer pipe, an inner pipe is fixedly connected inside the outer pipe, a sealing component is fixedly sleeved on the outer wall of the inner pipe, the connecting pipe can be sleeved on the inner pipe and the sealing component, and a low-tightening component is arranged on the outer pipe, and the low-tightening component clamps the connecting pipe on the outer wall of the inner pipe.

[0008] Preferably, the connecting pipe is a component made of medical-grade TPE thermoplastic elastomer material, and the connecting pipe has elastic properties of a crosslinked network at normal temperature.

[0009] Preferably, the sealing assembly includes a front collar and a rear collar fixedly sleeved on the outer wall of the inner ring. An annular groove is formed between the front collar and the rear collar, and a first sealing ring is clamped and arranged therein. A second sealing ring is embedded and installed on the side of the rear collar away from the front collar;

[0010] Wherein, when the connecting pipe is sleeved on the inner pipe, both the first sealing ring and the second sealing ring are in contact with the inner wall of the connecting pipe.

[0011] Preferably, the low-tightening assembly includes two symmetrically arranged low-tightening half-rings up and down. Nuts are fixedly connected to both of the low-tightening half-rings. A bidirectional screw is rotatably arranged in the outer pipe. Both of the nuts are threadedly connected to the bidirectional screw, and the two nuts are axially spaced along the bidirectional screw.

[0012] Preferably, a plurality of pressing plates distributed in a circumferential array are fixedly connected to the inner sides of both of the low-tightening half-rings, and the pressing plates are bent.

[0013] Preferably, a guide rod is fixedly connected to the inside of the outer pipe. The guide rod penetrates through both of the low-tightening half-rings and is symmetrically arranged with the bidirectional screw.

[0014] Preferably, a cross countersunk bolt is inserted through the top of the outer pipe. The bottom end of the cross countersunk bolt penetrates to the inside of the outer pipe and is connected to the top end of the bidirectional screw.

[0015] Preferably, one end of the inner pipe is provided with an internal thread for connecting to a medical device. A third sealing ring is embedded and installed on one side of the outer pipe. When the inner pipe is connected to the medical device through the internal thread, the third sealing ring can be in contact with the medical device.

[0016] Compared with the prior art, the advantages and positive effects of the present utility model are as follows:

[0017] 1. In the present utility model, through the combination of the internal thread and the third sealing ring, efficient sealing between the joint and the medical device is achieved, effectively preventing the possibility of fluid leakage; meanwhile, through the clamping action of the low-tightening half-rings on the connecting pipe, in cooperation with the first sealing ring and the second sealing ring, close fitting between the connecting pipe and the inner pipe is realized, further enhancing the overall sealing performance.

[0018] 2. In the present utility model, when the connecting pipe is subjected to the clamping force of the low-tightening half-rings, it can generate a small elastic deformation to ensure that the connecting pipe is stably fixed on the inner pipe. In addition, the bent design of the pressing plates enables the connecting pipe to overcome the pressures from different directions when being pulled by an external force, thus greatly improving the connection stability.

[0019] 3. In the present utility model, through the synergistic effect of the pressing plate and the low-tightening semi-ring, a double clamping effect on the connecting pipe is formed, effectively preventing the risk of the connecting pipe falling off due to accidental pulling, and ensuring the safety and reliability of the medical device during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 FIG. is a three-dimensional structural schematic diagram of a high-sealing medical device connecting pipe proposed by the present utility model;

[0021] Figure 2 FIG. is a partial cross-sectional three-dimensional structural schematic diagram of a high-sealing medical device connecting pipe proposed by the present utility model;

[0022] Figure 3 For a high-sealing medical device connecting pipe proposed by the present utility model Figure 2 the enlarged structural schematic diagram at A;

[0023] Figure 4 FIG. is an internal pipe structural schematic diagram of a high-sealing medical device connecting pipe proposed by the present utility model;

[0024] Figure 5 FIG. is a structural schematic diagram of a low-tightening assembly of a high-sealing medical device connecting pipe proposed by the present utility model.

[0025] Legend: 100, connecting pipe; 200, joint; 201, outer pipe; 202, inner pipe; 203, front collar; 204, rear collar; 205, first sealing ring; 206, second sealing ring; 207, third sealing ring; 300, low-tightening assembly; 301, low-tightening semi-ring; 302, nut; 303, bidirectional screw; 304, pressing plate; 305, guide rod; 306, cross countersunk head bolt. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] In order to more clearly understand the above-mentioned objects, features and advantages of the present utility model, the present utility model will be further described below with reference to the drawings and embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0027] In the following description, many specific details are set forth in order to fully understand the present utility model. However, the present utility model can also be implemented in other ways different from those described herein. Therefore, the present utility model is not limited by the specific embodiments disclosed in the following specification.

[0028] Such as Figures 1-5As shown in the figure, the present utility model provides a medical device connecting tube with high sealing performance, including a connecting tube 100 and a joint 200 connected to the connecting tube 100 and used for connecting to a medical device. The joint 200 includes an outer tube 201, an inner tube 202 is fixedly connected inside the outer tube 201, a sealing component is fixedly sleeved on the outer wall of the inner tube 202, the connecting tube 100 can be sleeved on the inner tube 202 and the sealing component, and a low-tightening component 300 is arranged on the outer tube 201. The low-tightening component 300 clamps the connecting tube 100 on the outer wall of the inner tube 202.

[0029] In this embodiment, the connecting tube 100 is a component made of medical-grade TPE thermoplastic elastomer material. The connecting tube 100 has elastic properties of a cross-linked network at normal temperature; the elasticity of the connecting tube 100 can ensure that the connecting tube 100 is sleeved on the inner tube 202 and the sealing component and fits with both of them, and will produce a small deformation when being squeezed.

[0030] In this embodiment, the sealing component includes a front sleeve ring 203 and a rear sleeve ring 204 fixedly sleeved on the outer wall of the inner ring. An annular groove is formed between the front sleeve ring 203 and the rear sleeve ring 204, and a first sealing ring 205 is clamped and arranged in the annular groove. A second sealing ring 206 is embedded and installed on the side of the rear sleeve ring 204 away from the front sleeve ring 203. When the connecting tube 100 is sleeved on the inner tube 202, both the first sealing ring 205 and the second sealing ring 206 are in contact with the inner wall of the connecting tube 100.

[0031] In this embodiment, the low-tightening component 300 includes two low-tightening half rings 301 symmetrically arranged up and down. Nuts 302 are fixedly connected to both of the two low-tightening half rings 301. A bidirectional screw 303 is rotatably arranged inside the outer tube 201. Both of the two nuts 302 are threadedly connected to the bidirectional screw 303, and the two nuts 302 are arranged at intervals along the axial direction of the bidirectional screw 303; when the bidirectional screw 303 rotates, the nuts 302 drive the low-tightening half rings 301 to move towards the connecting tube 100 and clamp on the surface of the connecting tube 100.

[0032] In this embodiment, a plurality of pressing plates 304 distributed in a circumferential array are fixedly connected to the inner sides of the two low-tightening half rings 301, and the pressing plates 304 are bent; the pressing plates 304 improve the clamping strength and apply pressures in different directions, which can prevent the connecting tube 100 from being accidentally pulled off.

[0033] In this embodiment, a guide rod 305 is fixedly connected inside the outer tube 201. The guide rod 305 penetrates through the two low-tightening half rings 301 and is symmetrically arranged with the bidirectional screw 303; the movement of the low-tightening half rings 301 is limited by the guide rod 305.

[0034] In this embodiment, a cross countersunk bolt 306 is inserted through the top of the outer tube 201, and the bottom end of the cross countersunk bolt 306 penetrates to the inside of the outer tube 201 and is connected to the top end of the bidirectional screw 303; the rotation of the bidirectional screw 303 is conveniently controlled by the cross countersunk bolt 306, improving the usability.

[0035] In this embodiment, one end of the inner tube 202 is provided with an internal thread for connecting to a medical device, and a third sealing ring 207 is embedded and installed on one side of the outer tube 201. When the inner tube 202 is connected to the medical device through the internal thread, the third sealing ring 207 can fit the medical device; sealing is performed between the docking head 200 and the medical device.

[0036] Usage method and working principle of this device:

[0037] When this device is in use, first connect the inner tube 202 to a medical device (not shown) through the internal thread, and seal between the docking head 200 and the medical device through the thread and the third sealing ring 207;

[0038] Secondly, put the connecting tube 100 on the inner tube 202. Since the connecting tube 100 is made of medical-grade TPE thermoplastic elastomer material and has elastic properties at room temperature, during the process of putting the connecting tube 100 on the inner tube 202, it squeezes through the front collar 203 and continues to extend in. Its elasticity can ensure that the connecting tube 100 is put on the inner tube 202 and the sealing assembly and fits with both of them;

[0039] Subsequently, control the cross countersunk bolt 306 with a screwdriver to drive the bidirectional screw 303 to rotate. Through screw drive, the nut 302 drives the low-tightening half-ring 301 to move towards the connecting tube 100 and clamp on the surface of the connecting tube 100. The connecting tube 100 undergoes a small elastic deformation under the clamping force, so that the connecting tube 100 is fixed on the inner tube 202 and fits tightly with the inner tube 202. Together with the first sealing ring 205 and the second sealing ring 206, a high sealing performance is achieved between the connecting tube 100 and the inner tube 202;

[0040] In the above process, when the low-tightening half-ring 301 clamps the connecting tube 100, the pressing plate 304 also moves along and clamps on the surface of the connecting tube 100, improving the clamping strength. Moreover, the pressing plate 304 is bent. When the connecting tube 100 is pulled, it is necessary to overcome the pressure of the low-tightening half-ring 301 and also the pressure of the pressing plate 304 in different directions, which can prevent the situation that the connecting tube 100 is accidentally pulled off.

[0041] The above are only the preferred embodiments of the present utility model, and are not intended to limit the present utility model in other forms. Any person skilled in the art may use the technical content disclosed above to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the content of the technical solution of the present utility model still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A medical device connecting tube with high sealing performance, characterized in that: It includes a connecting pipe (100) and a joint (200) connected to the connecting pipe (100) and used for connecting to a medical device. The joint (200) includes an outer pipe (201). An inner pipe (202) is fixedly connected inside the outer pipe (201). A sealing component is fixedly sleeved on the outer wall of the inner pipe (202). The connecting pipe (100) can be sleeved on the inner pipe (202) and the sealing component. A low-tightening component (300) is arranged on the outer pipe (201). The low-tightening component (300) clamps the connecting pipe (100) on the outer wall of the inner pipe (202).

2. The high-sealing medical device connecting tube according to claim 1, wherein: The connecting pipe (100) is a component made of medical-grade TPE thermoplastic elastomer material, and the connecting pipe (100) has elastic properties of a crosslinked network at room temperature.

3. The high-sealing medical device connecting tube according to claim 1, characterized in that: The sealing component includes a front collar (203) and a rear collar (204) fixedly sleeved on the outer wall of the inner ring. An annular groove is formed between the front collar (203) and the rear collar (204), and a first sealing ring (205) is snap-fitted in the annular groove. A second sealing ring (206) is embedded and installed on the side of the rear collar (204) away from the front collar (203). Among them, when the connecting pipe (100) is sleeved on the inner pipe (202), both the first sealing ring (205) and the second sealing ring (206) are in contact with the inner wall of the connecting pipe (100).

4. The high-sealing medical device connecting tube according to claim 1, characterized in that: The low-tightening component (300) includes two symmetrically arranged low-tightening half-rings (301) up and down. Nuts (302) are fixedly connected to both of the low-tightening half-rings (301). A bidirectional screw (303) is rotatably arranged inside the outer pipe (201). Both of the nuts (302) are threadedly connected to the bidirectional screw (303), and the two nuts (302) are axially spaced along the bidirectional screw (303).

5. A highly sealed medical device connecting tube according to claim 4, characterized in that: A plurality of pressing plates (304) distributed in a circumferential array are fixedly connected to the inner sides of the two low-tightening half-rings (301), and the pressing plates (304) are bent.

6. The high-sealing medical device connecting tube according to claim 4, wherein: A guide rod (305) is fixedly connected inside the outer pipe (201). The guide rod (305) penetrates through the two low-tightening half-rings (301) and is symmetrically arranged with the bidirectional screw (303).

7. The high-sealing medical device connecting tube according to claim 4, wherein: A cross countersunk head bolt (306) is inserted through the top of the outer pipe (201). The bottom end of the cross countersunk head bolt (306) penetrates to the inside of the outer pipe (201) and is connected to the top end of the bidirectional screw (303).

8. A highly-sealed medical device connecting tube according to claim 1, characterized in that: One end of the inner pipe (202) is provided with an internal thread for connecting to a medical device. A third sealing ring (207) is embedded and installed on one side of the outer pipe (201). When the inner pipe (202) is connected to the medical device through the internal thread, the third sealing ring (207) can be in contact with the medical device.

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