阅读说明：本技术 通道密封装置及可密封锁紧的注液阀 (Channel sealing device and sealing and locking liquid injection valve ) 是由 杨启伟 王伟 赵征 于 2021-08-02 设计创作，主要内容包括：本发明公开了一种通道密封装置及可密封锁紧的注液阀,密封装置包括第一锁紧接头、连接在第一锁紧接头上的第二锁紧接头、设置在第一锁紧接头和第二锁紧接头之间的弹性密封圈；第一锁紧接头内设有第一中心孔,第二锁紧接头内设有第二中心孔,第二中心孔、第一中心孔和注液阀的中间通道依次相接连通形成灌注通道；弹性密封圈位于第一锁紧接头的第一中心孔内,第二锁紧接头轴向移动时压缩弹性密封圈,使弹性密封圈的内径缩小。本发明的通道密封装置,用于连接在注液阀的接头端上并可套设于乳管镜的镜体的金属管外周,通过压缩变形的弹性密封圈抱紧在金属管外周,将注液阀的中间通道与外部空间进行隔绝,避免注液时液体从注液阀的中间通道反向溢出。(The invention discloses a channel sealing device and a sealing and locking liquid injection valve, wherein the sealing device comprises a first locking joint, a second locking joint connected with the first locking joint, and an elastic sealing ring arranged between the first locking joint and the second locking joint; a first central hole is formed in the first locking joint, a second central hole is formed in the second locking joint, and the second central hole, the first central hole and a middle channel of the liquid injection valve are sequentially connected and communicated to form a filling channel; the elastic sealing ring is positioned in the first central hole of the first locking joint, and the elastic sealing ring is compressed when the second locking joint moves axially, so that the inner diameter of the elastic sealing ring is reduced. The channel sealing device is used for being connected to the joint end of the liquid injection valve and can be sleeved on the periphery of the metal tube of the endoscope body of the breast-tube endoscope, the elastic sealing ring which is deformed in a compression mode is tightly held on the periphery of the metal tube, the middle channel of the liquid injection valve is isolated from the external space, and liquid is prevented from reversely overflowing from the middle channel of the liquid injection valve during liquid injection.)

1. A channel sealing device is characterized by comprising a first locking joint, a second locking joint and an elastic sealing ring, wherein the first locking joint is used for being matched with the joint end of a liquid filling valve;

a first central hole penetrating through two opposite ends of the first locking joint is formed in the first locking joint, a second central hole penetrating through two opposite ends of the second locking joint is formed in the second locking joint, and the second central hole, the first central hole and a middle channel of the liquid injection valve are sequentially connected and communicated to form a perfusion channel for a body of the breast-tube endoscope to penetrate through;

the elastic sealing ring is located in a first central hole of the first locking joint, the second locking joint is opposite to the first locking joint and compresses the elastic sealing ring during axial movement, so that the inner diameter of the elastic sealing ring is reduced and the elastic sealing ring is tightly held on the periphery of the metal tube of the endoscope body.

2. The channel sealing device as claimed in claim 1, wherein one end of the first locking adapter is connected with the adapter end of the filling valve by means of luer connection, an annular groove communicated with the first central hole is arranged in the opposite end of the first locking adapter, and the elastic sealing ring is fitted in the annular groove;

the second locking joint is matched with the other end of the first locking joint, and an inner pipe extending towards the direction of the annular groove is arranged in the second locking joint;

when the second locking joint moves axially relative to the first locking joint, the second locking joint enters the annular groove through the inner pipe and compresses the elastic sealing ring.

3. The channel seal of claim 2 wherein said elastomeric seal ring includes radially inner and outer annular portions;

the inner tube reduces the inner diameter of the elastic sealing ring by compressing the inner ring part.

4. The channel seal of claim 2 further comprising an anti-wear gasket disposed within said annular groove and between said elastomeric seal ring and the inner tube.

5. The channel sealing device as claimed in claim 2, wherein the end face of the first locking joint facing the second locking joint is provided with a threaded stud projecting axially and located at the periphery of the annular groove;

a thread wall matched with the thread column is arranged in the second locking joint;

when the second locking joint rotates relative to the first locking joint, the second locking joint moves axially through the matching of the thread wall and the thread column and is connected with the first locking joint.

6. The channel sealing device of claim 5, wherein the second locking joint comprises a barrel, an inner tube disposed inside the barrel; one end face of the inner pipe, which is back to the first locking joint, is connected with one end face of the corresponding cylinder;

the inner channel of the inner pipe forms the second central hole, and an annular space is formed between the inner pipe and the inner wall of the cylinder body; the inner wall of the cylinder body is provided with a radially raised annular step, and the surface of the annular step facing the inner pipe is provided with threads to form the thread wall;

the first locking tab penetrates the annular space through its threaded post and engages the threaded wall to connect with the first locking tab.

7. The channel seal as defined in claim 6, wherein the inner tube has a wall thickness that is less than or equal to a width of the annular groove in a radial direction.

8. The channel seal as defined in claim 6, wherein the second locking tab further comprises a metal spring ring fitted within an end of the barrel facing the first locking tab, a positioning groove being provided within the end of the barrel facing the first locking tab;

the metal elastic ring is clamped in the positioning groove and is sleeved on the periphery of the first locking connector.

9. The channel sealing device as defined in claim 8, wherein the first locking joint is provided with a barb toward the periphery of one end of the second locking joint;

the barb is located in the barrel of second locking joint and is located the metal elastic ring is towards one side of barrel inside, through the metal elastic ring restriction the barb is deviate from the barrel.

10. A sealably lockable filling valve, comprising a filling valve body and a channel sealing means according to any of claims 1-9; the channel sealing device is matched on the joint end of the liquid injection valve body.

Technical Field

The invention relates to the technical field of medical equipment, in particular to a channel sealing device and a sealable and lockable liquid injection valve.

Background

In performing a breast-scoping and perfusion procedure, a mastoscope physician needs to inject a fluid into the sheath channel of the breast-scope. The liquid injection channel of the breast endoscope is generally designed to be a four-way valve structure in structure. The metal tube of the body of the mammoscope passes through the middle channel of the four-way valve, any channel of two sides is connected with a liquid injection pipeline, and the channel of the other side is blocked by a liquid blocking plug. When a doctor fills a mammoscope, if a metal pipe of a mammoscope body and a middle channel of a four-way valve cannot be well sealed, locked and prevented from falling off, liquid can reversely overflow from the middle channel of the four-way valve inserted into the mammoscope body; in severe cases, if the injection pressure is large, the lens body can generate displacement; thus, the physician is unable to effectively perform the breast endoscopy and perfusion.

Therefore, there is a need to design a reliable device for sealing, locking, etc. of the injection channel of a breast endoscope.

Disclosure of Invention

The invention aims to solve the technical problem of providing a channel sealing device for a liquid injection valve and a sealable and locked liquid injection valve with the channel sealing device, wherein the channel sealing device is used for preventing liquid from reversely overflowing during liquid injection.

The technical scheme adopted by the invention for solving the technical problems is as follows: the channel sealing device comprises a first locking joint, a second locking joint and an elastic sealing ring, wherein the first locking joint is used for being matched with the joint end of the liquid filling valve;

a first central hole penetrating through two opposite ends of the first locking joint is formed in the first locking joint, a second central hole penetrating through two opposite ends of the second locking joint is formed in the second locking joint, and the second central hole, the first central hole and a middle channel of the liquid injection valve are sequentially connected and communicated to form a perfusion channel for a body of the breast-tube endoscope to penetrate through;

the elastic sealing ring is located in a first central hole of the first locking joint, the second locking joint is opposite to the first locking joint and compresses the elastic sealing ring during axial movement, so that the inner diameter of the elastic sealing ring is reduced and the elastic sealing ring is tightly held on the periphery of the metal tube of the endoscope body.

Preferably, one end of the first locking joint is connected with the joint end of the liquid injection valve in a luer connection mode, an annular groove communicated with the first central hole is formed in the opposite end of the first locking joint, and the elastic sealing ring is matched in the annular groove;

the second locking joint is matched with the other end of the first locking joint, and an inner pipe extending towards the direction of the annular groove is arranged in the second locking joint;

when the second locking joint moves axially relative to the first locking joint, the second locking joint enters the annular groove through the inner pipe and compresses the elastic sealing ring.

Preferably, the elastic sealing ring comprises an inner ring part and an outer ring part which are connected in a radial direction;

the inner tube reduces the inner diameter of the elastic sealing ring by compressing the inner ring part.

Preferably, the channel sealing means further comprises an anti-wear gasket disposed within the annular groove and between the resilient sealing ring and the inner tube.

Preferably, the end surface of the first locking joint facing the second locking joint is provided with a threaded column which axially protrudes and is positioned at the periphery of the annular groove;

a thread wall matched with the thread column is arranged in the second locking joint;

when the second locking joint rotates relative to the first locking joint, the second locking joint moves axially through the matching of the thread wall and the thread column and is connected with the first locking joint.

Preferably, the second locking joint comprises a cylinder body and an inner pipe arranged inside the cylinder body; one end face of the inner pipe, which is back to the first locking joint, is connected with one end face of the corresponding cylinder;

the inner channel of the inner pipe forms the second central hole, and an annular space is formed between the inner pipe and the inner wall of the cylinder body; the inner wall of the cylinder body is provided with a radially raised annular step, and the surface of the annular step facing the inner pipe is provided with threads to form the thread wall;

the first locking tab penetrates the annular space through its threaded post and engages the threaded wall to connect with the first locking tab.

Preferably, the wall thickness of the inner tube is smaller than or equal to the width of the annular groove in the radial direction.

Preferably, the second locking joint further comprises a metal elastic ring which is matched in one end of the cylinder body facing the first locking joint, and a positioning groove is formed in one end of the cylinder body facing the first locking joint;

the metal elastic ring is clamped in the positioning groove and is sleeved on the periphery of the first locking connector.

Preferably, the periphery of one end of the first locking joint facing the second locking joint is provided with a barb;

the barb is located in the barrel of second locking joint and is located the metal elastic ring is towards one side of barrel inside, through the metal elastic ring restriction the barb is deviate from the barrel.

The invention also provides a sealing and locking liquid injection valve, which comprises a liquid injection valve body and any one of the channel sealing devices; the channel sealing device is matched on the joint end of the liquid injection valve body.

The channel sealing device is used for being connected to the joint end of the liquid injection valve and can be sleeved on the periphery of the metal tube of the endoscope body of the breast-tube endoscope, the elastic sealing ring which is deformed in a compression mode is tightly held on the periphery of the metal tube, the middle channel of the liquid injection valve is isolated from the external space, and liquid is prevented from reversely overflowing from the middle channel of the liquid injection valve to the outside during liquid injection.

Drawings

The invention will be further described with reference to the accompanying drawings and examples, in which:

FIG. 1 is a schematic cross-sectional view of a sealably lockable priming valve in cooperation with a body of a breast tube scope in accordance with an embodiment of the present invention;

FIG. 2 is a schematic view of the structure of the channel sealing device of FIG. 1;

fig. 3 is a schematic view of the second locking joint of fig. 2.

Detailed Description

For a more clear understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

As shown in FIG. 1, a sealably lockable priming valve according to one embodiment of the present invention for cooperating with a breast mirror may include a priming valve body 100 and a channel sealing means fitted to the priming valve body 100.

The liquid injection valve can be a four-way valve or a three-way valve; the four-way valve is provided with two liquid injection channels communicated with a middle channel thereof; for a three-way valve, it has a filling channel in communication with its intermediate channel. In the embodiment shown in fig. 1, the liquid injection valve is a four-way valve, and the liquid injection valve body 100 comprises a four-way joint 110 and a sheath 120; the middle channel 130 in the four-way joint 110 penetrates through the two opposite ends of the four-way joint, and the endoscope sheath 120 is connected with one end of the four-way joint 110 in a luer connection mode and is communicated with the middle channel 130; the other end of the four-way fitting 110 forms the fitting end of the filling valve. The two filling channels 140 of the four-way joint 110 are connected and communicated with the middle channel 130 at an included angle, wherein one filling channel 140 is usually blocked by a liquid blocking plug 150. When the liquid injection valve is matched with the breast tube endoscope to work, the endoscope body 200 of the breast tube endoscope penetrates into the middle channel 130 by the front end optical fiber until the front end optical fiber penetrates out of the endoscope sheath 120.

As shown in figures 1 and 2, the channel sealing device is matched on the joint end of the liquid injection valve and is used for sealing and locking on the metal tube 220 of the mirror body 200, the middle channel 130 of the liquid injection valve is isolated from the external space, and when liquid is injected into the liquid injection valve through the liquid injection channel 140, the liquid reversely overflows the outside from the middle channel 130.

The passage sealing means may comprise a first locking nipple 10 for fitting on the nipple end of the filling valve, a second locking nipple 20 connected to the first locking nipple 10 by axial displacement, an elastic sealing ring 30 arranged between the first locking nipple 10 and the second locking nipple 20.

The first locking joint 10 is internally provided with a first central hole 11 which runs through the two opposite ends of the first locking joint, the second locking joint 20 is internally provided with a second central hole 21 which runs through the two opposite ends of the second locking joint, and the second central hole 21, the first central hole 11 and the middle channel 130 of the liquid injection valve are sequentially communicated with each other to form a perfusion channel for the endoscope body 200 of the breast endoscope to pass through. When the liquid injection valve is matched with the breast-tube endoscope, the endoscope body 200 of the breast-tube endoscope penetrates into the middle channel 130 by the front end optical fiber until the front end optical fiber penetrates out of the endoscope sheath 120, and the front section part of the metal tube 220 of the endoscope body 200 is matched in the first central hole 11 and the second central hole 21. The elastic sealing ring 30 is located in the first center hole 11 of the first locking joint 10, and the second locking joint 20 compresses the elastic sealing ring 30 when moving axially relative to the first locking joint 10, so that the inner diameter of the elastic sealing ring 30 is reduced and the elastic sealing ring is tightly held on the periphery of the metal tube 220 (specifically, the front section of the metal tube 220) of the endoscope body 200, a gap between the perfusion channel and the metal tube 220 is sealed, and the outer space of the perfusion channel and the channel sealing device is isolated.

Specifically, the first locking tab 10 is generally of a cylindrical configuration having opposite ends; the arrangement of the first central bore 11 on the first locking nipple 10 is such that it forms a hollow cylinder structure. The first locking nipple is connected at one end thereof to the nipple end of the filler valve by means of a luer connection so that the first central bore 11 is sealingly engaged with and communicates with the intermediate passage 130; the opposite end of the first locking tab 10 faces and axially interfaces with the second locking tab 20.

The other end of the first locking tab 10 is provided with an annular groove 12 therein, and the annular groove 12 is formed to be recessed inward on the inner wall of the first center hole so as to communicate with the first center hole 11. The elastic seal ring 30 is fitted in the annular groove 12.

The second locking connector 20 is fitted on one end of the first locking connector 10, which faces away from the liquid injection valve body 100, and the second locking connector 20 and the first locking connector 10 can be connected in a buckling or threaded manner to realize relative fixation. An inner tube 22 extending in the direction of the annular groove 12 is arranged in the second locking nipple 20. When the second lock adapter 20 is axially moved relative to the first lock adapter 10, the inner tube 22 enters the annular groove 12 and compresses the elastic sealing ring 30, so that the elastic sealing ring 20 protrudes into the first central hole 11 to reduce the inner diameter.

Preferably, the wall thickness of the inner tube 22 is smaller than or equal to the width of the annular groove 12 in the radial direction, so that after the first locking joint 10 and the second locking joint 20 are connected in a matching manner, the inner tube 22 is in the annular groove 12 and does not protrude into the first central hole 11, and the sealing effect of the elastic sealing ring 20 is prevented from being influenced.

Structurally, as shown in fig. 2 and 3, the second locking joint 20 may include a cylinder 23 and an inner tube 22, and an end surface of the inner tube 22 facing away from the first locking joint 10 is connected with an end surface of the corresponding cylinder 23. The inner passage of the inner tube 22 forms the second central bore 21, and the inner tube 22 is spaced from the inner wall of the cylinder 23 and disposed inside the cylinder 23 such that an annular space is formed therebetween. The inner diameter of the cylinder 23 is larger than the outer diameter of the first locking joint 10.

In the present embodiment shown in fig. 1 to 3, the second locking joint 20 is threadedly coupled to the first locking joint 10. Wherein the end surface of the first locking connection 10 facing the second locking connection 20 is provided with an axially protruding threaded stud 13, the threaded stud 13 being located at the periphery of the annular groove 12, so that the annular groove 12 also extends into the interior of the threaded stud 13. A thread wall 24 matched with the thread column 13 is arranged in the second locking joint 20; the threaded wall 24 is mainly formed by an annular step 241, which annular step 241 projects radially on the inner wall of the cylinder 23, and by a thread 242 provided on its surface.

When the second locking joint 20 is mated oppositely to the first locking joint 10, the first locking joint 10 is threaded through its threaded post 13 into the annular space between the inner tube 22 and the barrel 23; when the second locking connector 20 is rotated, the second locking connector 20 is axially moved and connected with the first locking connector 10 through the cooperation of the threaded column 13 and the threaded wall 24.

The second lock joint 20 further comprises a metal elastic ring 25 fitted in the end of the cylinder 23 facing the first lock joint 10, and a positioning groove 26 is provided in the end of the cylinder 23 facing the first lock joint 10. The metal elastic ring 25 is clamped in the positioning groove 26 and is sleeved on the periphery of the first locking connector 10, so that the first locking connector 10 and the second locking connector 20 are further locked to prevent the first locking connector 10 and the second locking connector 20 from being easily separated.

The metal elastic ring 25 is a metal ring with an opening, and may be a stainless steel ring or a copper ring, etc.

Further, the first locking joint 10 is provided with a barb 14 at the periphery of one end facing the second locking joint 20. When the first locking connector 10 and the second locking connector 20 are connected in a matching way, the barb 14 is positioned in the barrel 23 of the second locking connector 20 and is positioned on one side of the metal elastic ring 25 facing the inside of the barrel 23, and the metal elastic ring 25 limits the barb 14 from falling off the barrel 23.

In addition, the inner periphery of the end of the cylinder 23 facing the first locking tab 10 is provided with a bevel 27 for cooperating with the surface of the barb 14 for guiding.

When the second lock joint 20 and the first lock joint 10 are axially opposed and brought close to each other, the barb 14 of the first lock joint 10 follows the inclined surface 27 and pushes the metal elastic ring 25 open into the cylindrical body 23 of the second lock joint 20, and after the barb 14 passes over the metal elastic ring 25, the metal elastic ring 25 is restored and tightened on the outer periphery of the first lock joint 10 by the restoring force. The second locking sub 20 continues to move axially until the threaded stud 13 is close to the threaded wall 24; the second locking joint 20 is rotated to enable the thread wall 24 to be in threaded fit with the periphery of the threaded column 13 until the threaded column is in place, and at the moment, the first locking joint 10 and the second locking joint 20 are meshed together to form an anti-disengaging structure and cannot be easily disassembled.

As shown in fig. 1 and 2, the elastic sealing ring 30 is disposed in the annular groove 12, and may include an inner ring portion and an outer ring portion that are radially connected; the inner tube 22 of the second locking joint 20 reduces the inner diameter of the elastic sealing ring 30 by compressing the inner ring portion of the elastic sealing ring 30.

The elastic sealing ring 30 may be made of an elastic material such as silica gel.

Further, the channel sealing device of the present invention may further include an anti-wear gasket 40 disposed in the annular groove 12 and between the elastic sealing ring 30 and the inner tube 22, so as to prevent the inner tube 22 from directly compressing the elastic sealing ring 30 to cause abrasion of the elastic sealing ring 30.

In addition, in the channel sealing device of the present invention, the outer peripheral side surface of the second locking joint 20 may be provided with a concave-convex structure such as a corrugation, so that the second locking joint 20 forms a knob that can be screwed by hand, which is convenient for an operator to rotate the second locking joint 20.

Referring to fig. 1 and 2, when the injection valve of the present invention is used, the first locking connector 10 is connected to the connector end of the injection valve body 100, the second locking connector 20 is not connected with the first locking connector 10 in a matching manner, the scope body 200 of the breast endoscope sequentially passes through the second central hole 21, the first central hole 11 and the intermediate channel 130 by the optical fiber at the front end thereof until the endoscope sheath 120 passes through, and the front section of the metal tube 220 of the scope body 200 is matched in the first central hole 11 and the second central hole 21.

After the second locking tab 20 is axially moved so that the metal elastic ring 25 thereon passes over the barb 14 of the first locking tab 10, the second locking tab 20 is rotated to be screw-locked with the first locking tab 10. When rotatory second lock joint 20, second lock joint 20 is the compression elasticity sealing washer 30 of relative first lock joint 10 axial displacement, makes the internal diameter of elasticity sealing washer 30 reduce and hug closely in the anterior segment portion periphery of the tubular metal resonator 220 of mirror body 200, will pour into the gap seal between passageway and the tubular metal resonator 220, and isolated passageway and passageway sealing device's exterior space that fills, follow-up can carry out through the galactoscope and inspect and pour into.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.