CN219763381U

CN219763381U - Sealing element, sealing assembly and sampling device

Info

Publication number: CN219763381U
Application number: CN202320515414.2U
Authority: CN
Inventors: 戴笛; 刘永青; 姜镇东; 胡彩云
Original assignee: Hunan Vathin Medical Instrument Co Ltd
Current assignee: Hunan Vathin Medical Instrument Co Ltd
Priority date: 2023-03-16
Filing date: 2023-03-16
Publication date: 2023-09-29
Anticipated expiration: 2033-03-16

Abstract

The present application provides a seal, a sealing component and a sampling device, which relate to the technical field of medical devices and are used to solve the technical problem of poor sealing effect of elastic parts of existing sampling devices. A sealing member has a connecting part, and the connecting part is provided with a through insertion channel for sealing connection with the sampling nozzle. Wherein, a sealing portion away from the connecting portion is provided along the radial direction of the connecting portion for sealing the gap between the sampling assembly and the connecting head. The seal provided by this application allows the sampling nozzle to be plugged into the insertion channel of the connecting part to seal the sampling nozzle. When the sampling component is connected to the connector, the sealing portion arranged along the radial direction of the connector is sandwiched between the sampling component and the connector. Not only is it easy to install, but it can also act as a limiter between the sampling component and the connector to prevent the seal from moving and slipping. At the same time, the setting of the sealing part can also seal the gap between the sampling component and the connecting head, thereby improving the sealing performance of the sampling device.

Description

Sealing element, sealing assembly and sampling device

Technical Field

The utility model relates to the technical field of medical equipment, in particular to a sealing element, a sealing assembly and a sampling device.

Background

The sample container is commonly used for collecting pathological effusion such as sputum, gastric juice, urine and the like of a human body. In sampling, it is necessary to attach the sample container to the sampling device and then attach the sampling device to the sampling nozzle of the endoscope, thereby allowing pathological fluid to be withdrawn from the sampling nozzle. This requires good sealing between the sampling nipple and the sampling device, otherwise the negative pressure for suction is increased and the suction efficiency is not high.

In CN218165296U, as shown in fig. 1, the sampling device is provided with a plug-in portion, an elastic member is provided in the plug-in portion, and a sampling nozzle on the endoscope is connected with the plug-in portion in a sealing manner through the elastic member. In the actual use, because the elastic component need be through gluing, interference fit etc. mode just can connect in grafting portion, not only install inconvenient, the elastic component is still easy in grafting portion drunkenness moreover, slippage goes out grafting portion even, can't guarantee the sealed effect of elastic component to influence the going on of sample.

Disclosure of Invention

The embodiment of the utility model provides a sealing element, a sealing assembly and a sampling device, which are used for solving or at least partially solving the technical problem that the sealing effect of an elastic element of the existing sampling device is poor.

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

embodiments of the first aspect of the present utility model provide a seal mountable between a sampling assembly and a connector for sealing a sampling nipple. The sealing member has connecting portion, and connecting portion are provided with the grafting passageway that link up for with sample connect mouth sealing connection. The sealing part deviating from the connecting part is arranged along the radial direction of the connecting part and is used for sealing a gap between the sampling assembly and the connector.

In some embodiments, the sealing portion is located at one end of the connection portion, and at least one ring of sealing ring is disposed on a side of the sealing portion facing the connection portion. The sealing ring is convex in a direction away from the sealing portion.

In some embodiments, the seal is further provided with a guide channel. The two ends of the guide channel are respectively communicated with the sealing part and the connecting part, and the caliber of the guide channel gradually decreases from the inlet direction to the outlet direction of the plug-in channel.

In a second aspect, the present utility model provides a sealing assembly, comprising a sampling assembly for sampling a sample, a connector connectable to the sampling assembly, and a sealing member as described above, wherein the sealing member is mountable between the sampling assembly and the connector for sealing a gap between the sampling assembly and the connector. The sealing member involved in the above-described sealing assembly has the same technical effects as those provided in the foregoing embodiment, and will not be described in detail herein.

In some embodiments, the sampling assembly is provided with a sampling channel for plugging the sampling nipple. The inside wall of sampling channel is provided with spacing portion for the degree of depth of limiting connecting portion inserted sampling channel.

In some embodiments, the limiting portion protrudes from an inner sidewall of the sampling channel along a radial direction of the sampling channel. A hollow part is arranged between the limiting part and the inner side wall of the sampling channel.

In some embodiments, two sets of limiting portions are disposed opposite each other in the sampling channel, and the sampling channel forms a waist-shaped channel between the two sets of limiting portions. The sampling assembly is also provided with a rotatable valve core, and the length direction of the waist-shaped channel is arranged along the rotation direction of the valve core.

In some embodiments, the inlet end face of the sampling channel is further provided with a sealing shoulder along the circumference of the sampling channel. The sealing portion may seal the sampling passage with the sealing shoulder.

In some embodiments, the inner wall of the sampling channel is circumferentially provided with a relief portion located at the inlet position of the sampling channel.

In a third aspect, embodiments of the present utility model provide a sampling device comprising a sample container and a seal assembly as described above, the sample container being connectable to the seal assembly. The sealing assembly involved in the above-mentioned sampling device has the same technical effects as those provided in the foregoing embodiment, and will not be described herein.

Compared with the prior art, the utility model has the following beneficial effects:

the sealing piece provided by the utility model can enable the sampling connector to be inserted into the insertion channel of the connecting part so as to seal the sampling connector. When the sampling assembly is connected with the connector, the sealing part arranged along the radial direction of the connecting part is clamped between the sampling assembly and the connector. Not only simple to operate can play spacing effect between sampling component and connector moreover, prevents the drunkenness and the slippage of sealing member to guarantee sampling device's leakproofness. Meanwhile, the sealing part can seal the gap between the sampling assembly and the connector, so that the tightness of the sampling device is improved.

Drawings

FIG. 1 is a schematic perspective view of a prior art sampling device;

FIG. 2 is a schematic view of the connection of the sampling device of the present utility model to an endoscope;

FIG. 3 is an exploded view of the sampling device of FIG. 2;

FIG. 4 is a schematic perspective view of the sampling assembly of FIG. 3;

FIG. 5 is a schematic cross-sectional view of the sampling assembly of FIG. 4;

FIG. 6 is a schematic diagram of the front view of the seal of FIG. 3;

FIG. 7 is a schematic perspective view of the seal of FIG. 3;

FIG. 8 is a schematic cross-sectional view of the seal assembly of FIG. 3;

fig. 9 is a partially enlarged schematic view of the portion a in fig. 8.

Reference numerals:

100-sampling device; 10-a seal assembly; 11-a sampling assembly; 111-negative pressure connector; 112-valve core; 113-sampling channels; 114-a limiting part; 115-hollow part; 116-sealing the shoulder; 117-avoidance; 12-a seal; 121-a connection; 122-sealing part; 123-plug-in channels; 124-sealing ring; 125-a guide channel; 13-a connector; 20-sample container; 200-endoscope; 210-sampling tap.

Detailed Description

The following description of the technical solutions according to the embodiments of the present utility model will be given with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments.

Hereinafter, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature.

Furthermore, in the present utility model, the terms "upper," "lower," "horizontal," and "vertical" are defined relative to the orientation in which the components are schematically depicted in the drawings, and it should be understood that these directional terms are relative terms, which are used for descriptive and clarity relative thereto, and which may be varied accordingly to the orientation in which the components are depicted in the drawings.

In the present utility model, unless explicitly specified and limited otherwise, the term "connected" is to be construed broadly, and for example, "connected" may be either fixedly connected, detachably connected, or integrally formed; can be directly connected or indirectly connected through an intermediate medium.

In the prior art, as shown in fig. 1, in order to connect a sampling connector, a sampling device is provided with a plugging portion, and an elastic member is connected in the plugging portion by means of gluing, interference fit and the like. During sampling, the sampling connector is inserted into the elastic piece, so that the sampling connector is in sealing connection with the sampling device.

Because only the circumferential seal of the elastic piece exists between the elastic piece and the plug-in part, and the elastic piece is easy to move and even slip relative to the plug-in part. Once the elastic piece moves in the inserting part, the problem of loose sealing between the elastic piece and the inserting part is easily caused, so that the negative pressure energy consumption for suction is increased.

The present utility model provides a sampling device 100, as shown in fig. 2, the sampling device 100 can be used together with an endoscope 200 such as a gastroscope, enteroscope, cystoscope, thoracoscope, etc., for extracting pathological effusion of human body parts such as thoracic cavity, abdominal cavity, pelvic cavity, etc. The sampling device 100 may also be used with other detection devices, such as medical devices including ventilators, ultrasonic detectors, and the like. The utility model does not limit the specific application scenario of the sampling device.

As shown in fig. 2, the endoscope 200 has a sampling nozzle 210, and pathological effusion in the human body is sucked through the endoscope 200 by the negative pressure in the sampling device 100 and finally discharged from the sampling nozzle 210. Sampling device 100 may be connected to sampling nipple 210 and collect pathological fluid.

Specifically, as shown in FIG. 3, the sampling device 100 can include a seal assembly 10 and a sample container 20. The seal assembly 10 may include a sampling assembly 11, a seal 12, and a connector 13. Wherein the sampling assembly 11 may be provided with a negative pressure nozzle 111 and a valve core 112, the negative pressure nozzle 111 may be used to connect with a vacuum pump to extract pathological effusion. The valve core 112 can rotate in the sampling assembly 11, and can be used for adjusting the flowing state of pathological effusion in the sampling device 100 through the connection or disconnection between a pore canal arranged on the valve core 112 and the sampling connector 210.

On this basis, as shown in fig. 4 and 5, the sampling assembly 11 is provided with a sampling channel 113 for connecting with a sampling nozzle 210. A limiting portion 114 may be provided in the sampling passage 113 for limiting the depth of insertion of the seal 12 into the sampling passage 113. The limiting portion 114 may protrude from an inner sidewall of the sampling channel 113 along a radial direction of the sampling channel 113. After the sealing member 12 is inserted into the sampling passage 113, the limiting portion 114 can limit the position of the sealing member 12 inserted into the sampling passage 113.

For example, as shown in fig. 4 and 5, two sets of limiting portions 114 may be provided, and the two sets of limiting portions 114 may be disposed opposite to each other on the inner side wall of the sampling channel 113, so that a kidney-shaped channel is formed between the two sets of limiting portions 114. The length direction of the kidney-shaped channel is the same as the rotation direction of the valve core 112.

Thus, when the valve core 112 rotates, the hole in the valve core 112 is more easily connected to the sampling nozzle 210 through the kidney-shaped channel than through the circular channel. That is, the kidney-shaped channel may allow a certain error in the hole channel provided on the valve core 112, thereby being beneficial to reducing the difficulty in opening the valve core 112.

It should be noted that the aperture of the sampling channel 113 should be larger than the aperture of the channel on the valve core 112, and the distance between the two sets of limiting portions 114 disposed in the sampling channel 113 should also be larger than the aperture of the channel on the valve core 112. Thus, the stopper 114 is provided so as not to block the flow of the pathological liquid in the sampling passage 113.

In addition, as shown in fig. 4 and 5, a hollow portion 115 may be disposed between the limiting portion 114 and the inner sidewall of the sampling channel 113, i.e., a space between the limiting portion 114 and the inner sidewall of the sampling channel 113 is hollowed out. In this way, the thickness of the sampling passage 113 at this position is excessively large due to the addition of the stopper 114 in the sampling passage 113, and the problem of collapse due to excessively thick material is easily caused when the sampling module 11 is processed. The thickness of the sampling channel 113 at the limiting part 114 can be reduced by arranging the hollow part 115, so that the problem of material collapse during processing of the sampling assembly 11 is effectively avoided.

It is to be understood that the limiting portion 114 may be configured as a circular ring, and a hollow portion 115 may be disposed between the circular ring-shaped limiting portion 114 and the inner side wall of the sampling channel 113 to reduce the thickness of the sampling channel 113 at the limiting portion 114. The specific structure of the stopper 114 is not particularly limited in the present utility model.

In order to seal the sampling channel 113, as shown in fig. 6 and 7, the present utility model further provides a sealing member 12, wherein the sealing member 12 may include a connection portion 121 and a sealing portion 122. The connecting portion 121 is provided therein with a through insertion passage 123, and the sealing portion 122 is provided away from the connecting portion 121 in a radial direction of the connecting portion 121, so that the cross section of the sealing member 12 has a T-shaped structure. Wherein the sealing part 122 may be provided at one end of the connection part 121. Of course, the sealing portion 122 may be disposed at a middle portion of the connecting portion 121 or at other positions, and the present utility model is not limited to the disposition position of the sealing portion 122.

In the mounting process, as shown in fig. 8, the seal 12 is inserted into the sampling passage 113 of the sampling module 11, and one end of the connecting portion 121, which is far from the sealing portion 122, abuts against the stopper 114. The sealing portion 122 abuts against the inlet end face of the sampling passage 113. And then the connector 13 is connected with the sampling assembly 11, so that the sealing element 12 is pressed between the sampling assembly 11 and the connector 13.

The connector 13 may be connected to the sampling assembly 11 by a snap, screw, or other locking means. A locking mechanism may be provided on the connector 13. When the sampling tap 210 is connected to the sampling device 100, the sampling tap 210 can be locked in the connector 13 by a locking mechanism.

In some embodiments, the limiting portion 114 may also be designed in a circular ring structure. In this way, the stopper 114 can not only serve as a stopper for the seal 12, but also seal the seal 12 with the stopper 114 when the seal 12 abuts against the stopper 114, thereby improving the sealing performance of the sampling passage 113.

Compared with the prior art, the sealing element 12 provided by the utility model can seal the inner side wall of the sampling channel 113 through the connecting part 121, and seal the gap between the sampling assembly 11 and the connector 13 through the sealing part 122, so that the sealing area of the sealing element 12 to the sampling channel 113 is increased. In addition, since the sealing part 122 is disposed along the radial direction of the connecting part 121, the sealing member 12 is not required to be connected with the sampling assembly 11 by gluing, interference fit or the like, and the installation process of the sealing member 12 is simplified. At the same time, the sealing element 12 is clamped with the connector 13 through the sampling assembly 11, so that the problem that the sealing element 12 easily moves or slips in the sampling channel 113 is avoided.

In order to better seal the sampling channel 113, as shown in fig. 6 and 7, a sealing ring 124 is provided on the side of the sealing portion 122 facing the connecting portion 121, the sealing ring 124 protruding in a direction away from the sealing portion 122. Accordingly, as shown in fig. 9, a sealing shoulder 116 is further provided on the inlet end face of the sampling passage 113, and the sealing shoulder 116 is provided along the circumferential direction of the inlet end face of the sampling passage 113.

When the sampling assembly 11 is connected to the connector 13, as shown in fig. 9, the seal ring 124 is more easily deformed relative to the seal portion 122, and can be rapidly spread out on the inlet end face of the sampling passage 113 to form a seal surface. In addition, the side walls of the deployed seal ring 124 also form a side seal at the location of the seal shoulder 116, thereby improving the sealing of the sampling passage 113. At the same time, a sealing surface is also formed between the sealing shoulder 116 and the sealing portion 122.

It will be appreciated that, depending on the size of the area of the inlet end face of the sampling channel 113, one, two or three rings of sealing rings 124 may be provided on the sealing portion 122, and the specific number of sealing rings 124 is not particularly limited in the present utility model. Of course, in order to further improve the sealing property of the sampling passage 113, sealing rings 124 protruding away from the sealing portion 122 may be provided on both sides of the sealing portion 122.

In order to allow for easier insertion of the sampling nipple 210 into the insertion channel 123 of the seal 12, the seal 12 may also be provided with a guide channel 125, as shown in fig. 6. Both ends of the guide passage 125 are respectively connected to the connection portion 121 and the sealing portion 122, and the diameter of the guide passage 125 gradually decreases from the inlet direction to the outlet direction of the insertion passage 123. I.e. from top to bottom in the drawing, the diameter of the guide channel 125 gradually decreases.

When the sampling tap 210 is inserted into the mating channel 123, the sampling tap 210 is mostly in the shape of a pagoda, i.e., the head size of the sampling tap 210 is smaller than the root size. Thus, the guide passage 125 can guide the sampling tap 210 to be gradually inserted into the connection part 121 and finally to be sealingly connected with the connection part 121.

As shown in fig. 8 and 9, a relief portion 117 may be provided in the circumferential direction of the inner wall of the sampling passage 113, and the relief portion 117 may be provided at the inlet position of the sampling passage 113. When the sampling tap 210 is inserted into the plugging channel 123, the sampling tap 210 first contacts the sealing member 12 at the position of the avoidance portion 117, and the elastic buffer force of the sealing member 12 can be increased by the arrangement of the avoidance portion 117, so that the sealing member 12 can play a role in buffering the sampling tap 210, and damage deformation of the sampling tap 210 in the installation process is avoided.

The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. A seal, characterized in that it is mountable between a sampling assembly (11) and a connector (13) for sealing a sampling nipple (210);

the sealing element (12) is provided with a connecting part (121), and the connecting part (121) is provided with a through inserting passage (123) for being in sealing connection with the sampling connector (210);

wherein, along the radial direction of the connecting part (121), a sealing part (122) deviating from the connecting part (121) is arranged for sealing the gap between the sampling assembly (11) and the connector (13).

2. The seal according to claim 1, characterized in that the sealing part (122) is located at one end of the connecting part (121), the sealing part (122) being provided with at least one ring of sealing rings (124) towards the side of the connecting part (121);

the sealing ring (124) protrudes in a direction away from the sealing portion (122).

3. The seal according to claim 1 or 2, characterized in that the seal (12) is further provided with a guide channel (125);

the two ends of the guide channel (125) are respectively communicated with the sealing part (122) and the connecting part (121), and the caliber of the guide channel (125) gradually decreases along the inlet direction to the outlet direction of the plugging channel (123).

4. A seal assembly, comprising:

a sampling assembly (11) for sampling a sample;

a connector (13) connectable to the sampling assembly (11); the method comprises the steps of,

a seal (12) as claimed in any one of claims 1 to 3 mountable between the sampling assembly (11) and the connector (13) for sealing a gap between the sampling assembly (11) and the connector (13).

5. The sealing assembly according to claim 4, characterized in that the sampling assembly (11) is provided with a sampling channel (113) for plugging the sampling nipple (210);

the inner side wall of the sampling channel (113) is provided with a limiting part (114) for limiting the depth of the connecting part (121) inserted into the sampling channel (113).

6. The seal assembly of claim 5, wherein the stop (114) protrudes from an inner sidewall of the sampling passage (113) in a radial direction of the sampling passage (113);

a hollow part (115) is arranged between the limiting part (114) and the inner side wall of the sampling channel (113).

7. The seal assembly of claim 5, wherein two sets of the limiting portions (114) are disposed in relation to each other in the sampling passage (113), the sampling passage (113) forming a waist-shaped passage between the two sets of limiting portions (114);

the sampling assembly (11) is further provided with a rotatable valve core (112), and the length direction of the waist-shaped channel is arranged along the rotation direction of the valve core (112).

8. The seal assembly according to claim 5, wherein the inlet end face of the sampling channel (113) is further provided with a sealing shoulder (116) along the circumference of the sampling channel (113);

the seal (122) may seal the sampling channel (113) with the sealing shoulder (116).

9. The seal assembly according to claim 8, wherein the inner wall of the sampling channel (113) is circumferentially provided with a relief (117), the relief (117) being located at an inlet position of the sampling channel (113).

10. A sampling device, comprising:

a sample container (20); the method comprises the steps of,

the seal assembly (10) of any one of claims 1 to 9;

the sample container (20) may be connected to the seal assembly (10).