Locking connector capable of being replaced quickly

Abstract

The utility model relates to a locking connector capable of being replaced quickly. The locking connector comprises a valve body. A through hole is formed in the valve cover, and a puncture film is arranged in the valve cover; the locking sealing ring is arranged in the valve cavity; a bayonet used for clamping the outer pipe is formed in the elastic clamping jaw; and the release cap is inserted into the valve cavity from the other side of the valve body and is in sliding fit with the valve body, and a through hole is formed in the release cap. The puncture film can be quickly connected with the outer tube, the connection speed is high, the outer tube does not slip off, the pressure maintaining capacity is achieved, and the puncture film can be repeatedly used.

Description

Technical Field

[0001] The utility model relates to the field of medical devices, and particularly relates to a quick-change locking joint. Background Art

[0002] In some medical scenarios, for example, in some surgical treatment drainage tubes, according to the location of the lesion and individual differences of the human body, it is necessary to cut the connecting pipe; for another example, in order to reduce the operation time, a certain specific device needs to be quickly connected multiple times repeatedly, and it can be repeatedly filled during connection. And certain requirements are imposed on the connection strength and pressure.

[0003] The traditional connection method between the handle and the catheter generally adopts gluing or a locking joint. The gluing method cannot replace the handle to achieve quick connection conversion of the product; the problems existing in the traditional locking joint are: when the sealing ring is used multiple times, it undergoes fatigue deformation and has a poor sealing effect; it cannot be quickly locked, the locking time is relatively long, and it cannot withstand high pressure. In addition, the selected sealing and locking connection strength is relatively poor, and it is only connected by the friction force between the silicone tube and the outer tube. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is: to overcome the deficiencies of the prior art and provide a quick-change locking joint, so as to solve the technical problems that the previous joints have poor sealing effect, cannot be quickly locked, and cannot withstand high pressure when connecting adjacent medical pipes.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] Provide a quick-change locking joint, including

[0007] A valve body, a valve cavity is opened in the valve body, and the valve cavity penetrates through the valve body from front to back;

[0008] A valve cover, a perforation is opened in the valve cover, a puncture membrane is arranged in the valve cover, the valve cover is threadedly connected to one end of the valve body, and the puncture membrane is axially clamped between the valve body and the valve cover;

[0009] A locking sealing ring, which is arranged in the valve cavity, a perforation for inserting an outer tube is opened in the locking sealing ring, and one side of the locking sealing ring is axially abutted against the step surface in the valve cavity;

[0010] An elastic claw, which is arranged in the valve cavity and is located on one side of the locking sealing ring, and a clamping opening for clamping the outer tube is opened in the elastic claw;

[0011] A release cap, which is inserted into the valve cavity from the other side of the valve body and forms a sliding fit with the valve body, and a perforation is opened in the release cap;

[0012] The release cap abuts against the elastic claw inwardly to open the bayonet of the elastic claw, and the outer tube is inserted into the locking sealing ring after passing through the release cap and the elastic claw in sequence.

[0013] Further, a ring sleeve is arranged at the valve cavity opening, the ring sleeve is fixedly arranged in the valve cavity opening, and the release cap passes through the ring sleeve.

[0014] Further, a retaining ring is arranged on the release cap, and the retaining ring is adapted to abut against the ring sleeve to limit the release cap from moving out of the sliding sleeve.

[0015] Further, the elastic claw includes

[0016] an annular ring body, a plurality of radially elastic blocks and a plurality of axially elastic blocks;

[0017] Each radially elastic block is circumferentially distributed within the annular ring body, and a bayonet is formed between each radially elastic block;

[0018] Each axially elastic block is axially distributed on one axial side of the annular ring body, and each axially elastic block abuts against the end face of the locking sealing ring.

[0019] Further, the inner end of the release cap is of a conical structure.

[0020] Further, a sealing ring is arranged between the ring sleeve and the valve body.

[0021] Further, the cavity opening of the valve cavity on the valve cover side is a conical opening.

[0022] The beneficial effects of the present utility model are:

[0023] The quick-change locking joint of the present utility model can be quickly connected to the outer tube, has a fast connection speed, the outer tube does not slip off, has a pressure-holding ability, and the puncture membrane can be reused. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present utility model will be further described below with reference to the drawings.

[0025] Figure 1 is a schematic diagram of the quick-change locking joint of the present utility model;

[0026] Figure 2 and Figure 3 is a schematic diagram of the elastic claw;

[0027] Figure 4 is a usage state diagram of the quick-change locking joint of the present utility model;

[0028] Wherein, 1, valve body; 2, valve cover; 21, puncture membrane; 3, locking sealing ring;

[0029] 4. Elastic claw, 41. Annular ring body, 42. Radial elastic clamping block, 43. Axial elastic clamping block;

[0030] 5. Release cap, 51. Retaining ring;

[0031] 6. Ring sleeve, 61. Sealing ring;

[0032] 7. Outer tube. Detailed implementation manners

[0033] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0034] This application provides a quick-change locking joint, which will be described in detail below. It should be noted that the description order of the following embodiments does not limit the preferred order of the embodiments of this application. And in the following embodiments, each embodiment is described with its own emphasis. For the parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0035] To solve the technical problems in the prior art that the joint has poor sealing effect when connecting adjacent medical pipelines, cannot be quickly locked, and cannot withstand high pressure, an embodiment of this application provides a quick-change locking joint. The following is a detailed elaboration.

[0036] As Figures 1 to 4 shown, a quick-change locking joint includes

[0037] a valve body 1, a valve cavity is opened in the valve body 1, and the valve cavity penetrates through the valve body 1 from front to back;

[0038] a valve cover 2, a perforation is opened on the valve cover 2, a puncture film 21 is arranged in the valve cover 2, the valve cover 2 is threadedly connected to one end of the valve body 1, and the puncture film 21 is axially clamped between the valve body 1 and the valve cover 2;

[0039] a locking sealing ring 3, which is arranged in the valve cavity, a perforation for inserting the outer tube 7 is opened in the locking sealing ring 3, and one side of the locking sealing ring 3 axially abuts against the step surface in the valve cavity;

[0040] an elastic claw 4, which is arranged in the valve cavity and is located on one side of the locking sealing ring 3, and a bayonet for clamping the outer tube 7 is opened in the elastic claw 4;

[0041] Release the cap 5. The release cap 5 is inserted into the valve cavity from the other side of the valve body 1 and forms a sliding fit with the valve body 1. A perforation is provided in the release cap 5.

[0042] The release cap 5 abuts inwardly against the elastic claw 4 to open the clamping opening of the elastic claw 4. The outer tube 7 sequentially passes through the release cap 5 and the elastic claw 4 and then is inserted into the locking sealing ring 3.

[0043] In this embodiment, the release cap 5 is integrally of a T-shaped structure. The vertical side body of the release cap 5 is inserted into the valve body 1, and the horizontal side body of the release cap 5 is located outside the valve body 1. The perforation is provided in the vertical side body.

[0044] Specifically, as an alternative embodiment in this embodiment, as Figure 1 Figure 2 shown, a ring sleeve 6 is provided at the valve cavity opening. The ring sleeve 6 is fixedly arranged in the valve cavity opening, and the release cap 5 passes through the ring sleeve 6.

[0045] Specifically, as an alternative embodiment in this embodiment, as Figure 1 Figure 2 shown, a retaining ring is provided on the release cap 5. The retaining ring is adapted to abut against the ring sleeve 6 to limit the release cap 5 from moving out of the sliding sleeve.

[0046] In this embodiment, to improve the sealing performance between the ring sleeve 6 and the valve body 1, a sealing ring 61 is provided between the ring sleeve 6 and the valve body 1.

[0047] In this embodiment, the ring sleeve 6 and the valve body 1 are connected by insertion or threaded connection.

[0048] Specifically, as an alternative embodiment in this embodiment, as Figure 2 Figure 3 shown, the elastic claw 4 includes

[0049] an annular ring body 41, a plurality of radially elastic blocks 42 and a plurality of axially elastic blocks 43;

[0050] Each of the radially elastic blocks 42 is circumferentially distributed within the annular ring body 41, and a clamping opening is formed between each of the radially elastic blocks 42;

[0051] Each of the axially elastic blocks 43 is axially distributed on one axial side of the annular ring body 41, and each of the axially elastic blocks 43 abuts against the end face of the locking sealing ring 3.

[0052] As Figure 2 Figure 3 shown, the elastic block is of a hollow structure to provide space for elastic deformation.

[0053] The annular ring body 41, the radially elastic clamping block 42, and the axially elastic clamping block 43 are of an integral structure and are made of nitinol or highly elastic metal.

[0054] The setting of each axially elastic clamping block 43 is to provide a deformation space for the elastic clamping jaw 4. Because if there is only the radially elastic clamping block 42, the elastic clamping jaw 4 can only deform in one plane, the deformation amount of the clamping jaw is insufficient, and a relatively large external force is required.

[0055] Specifically, as an alternative implementation in this embodiment, as Figure 1 Figure 2 shown, the inner end of the release cap 5 is of a conical structure.

[0056] Specifically, as an alternative implementation in this embodiment, as Figure 1 Figure 2 shown, the cavity opening of the valve cavity on the side of the valve cover 2 is a conical opening.

[0057] The working principle of the quick-change locking joint of the present utility model:

[0058] As Figure 4 shown, insert the outer tube 7 into the release cap 5, then squeeze the elastic clamping jaw 4 through the release cap 5. After the elastic clamping jaw 4 receives the axial pressure, the clamping opening expands and opens. Then the outer tube 7 passes through the clamping opening and penetrates into the locking sealing ring 3. Release the release cap 5, and the elastic clamping jaw 4 deforms due to internal stress and locks on the surface of the outer tube 7 to lock the outer tube 7.

[0059] Insert a needle into the puncture membrane 21 to achieve communication with the outer tube 7. When not in use, pull out the needle, and at this time the outer tube 7 is no longer connected to the outside. When it is necessary to remove the outer tube 7, press the release cap 5 to expand the inner circular hole of the elastic clamping jaw 4 and pull out the outer tube 7.

[0060] All the components (components without specific structures described) selected in this application are common standard components or components known to those skilled in the art, and their structures and principles can all be known by those skilled in the art through technical manuals or obtained through conventional experimental methods.

[0061] In the description of the embodiments of the present utility model, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0062] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0063] In several embodiments provided by the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. The device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For another example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed coupling or direct coupling or communication connection between each other can be through some communication interfaces. The indirect coupling or communication connection of the device or unit can be in an electrical, mechanical or other form.

[0064] The units described as separate components may or may not be physically separated. The components displayed as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0065] In addition, in each embodiment of the present utility model, the functional units can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit.

[0066] Taking the above ideal embodiments of the present utility model as an inspiration, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of the present utility model. The technical scope of the present utility model is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A quick-change locking connector, characterized in that: include A valve body (1), wherein a valve cavity is provided in the valve body (1), and the valve cavity penetrates the valve body (1) from front to back; A valve cover (2), wherein a perforation is provided on the valve cover (2), a puncture membrane (21) is arranged inside the valve cover (2), the valve cover (2) is threadedly connected to one end of the valve body (1), and the puncture membrane (21) is axially clamped between the valve body (1) and the valve cover (2); A locking seal ring (3) is arranged in the valve cavity, a through hole for inserting the outer tube (7) is provided in the locking seal ring (3), and one side of the locking seal ring (3) is axially abutted against a step surface in the valve cavity; An elastic claw (4) is arranged in the valve cavity and located on one side of the locking seal ring (3), and a clip for clamping the outer tube (7) is provided in the elastic claw (4); A release cap (5), wherein the release cap (5) is inserted into the valve cavity from the other side of the valve body (1) and forms a sliding fit with the valve body (1), and a through hole is provided in the release cap (5); The release cap (5) abuts against the elastic claw (4) inwardly to open the opening of the elastic claw (4); the outer tube (7) passes through the release cap (5) and the elastic claw (4) in sequence and is then inserted into the locking seal ring (3).

2. The quick-change locking connector according to claim 1, characterized in that: The valve cavity opening is provided with a ring sleeve (6), the ring sleeve (6) is fixedly arranged in the valve cavity opening, and the release cap (5) passes through the ring sleeve (6).

3. The quick-change locking connector according to claim 2, characterized in that: A retaining ring (51) is arranged on the release cap (5), and the retaining ring (51) is suitable for abutting against the ring sleeve (6) to limit the release cap (5) from moving out of the sliding sleeve.

4. The quick-change locking connector according to claim 1, characterized in that: The elastic claw (4) comprises An annular ring body (41), a plurality of radial elastic blocks (42) and a plurality of axial elastic blocks (43); The radial elastic clamping blocks (42) are distributed circumferentially within the annular ring body (41), and bayonet holes are formed between the radial elastic clamping blocks (42); Each axial elastic block (43) is axially distributed on one axial side of the annular ring body (41), and each axial elastic block (43) abuts against an end surface of the locking seal ring (3).

5. The quick-change locking connector according to claim 1, characterized in that: The inner end of the release cap (5) is a conical structure.

6. The quick-change locking connector according to claim 2, characterized in that: A sealing ring (61) is arranged between the ring sleeve (6) and the valve body (1).

7. The quick-change locking connector according to claim 1, characterized in that The cavity opening of the valve cavity located on one side of the valve cover (2) is a tapered opening.

Images