CN219331877U

CN219331877U - Joint assembly, first type joint and second type joint

Info

Publication number: CN219331877U
Application number: CN202222368164.2U
Authority: CN
Inventors: 万星晨; 张爱丽; 张康伟
Original assignee: Shanghai Meijie Medical Technology Co ltd
Current assignee: Shanghai Meijie Medical Technology Co ltd
Priority date: 2022-09-06
Filing date: 2022-09-06
Publication date: 2023-07-14
Anticipated expiration: 2032-09-06

Abstract

The application provides a joint assembly, first type connect and second type connect, joint assembly includes first type connect and second type connect, and first type connects includes: an inner sleeve; the outer tube, its cover is located on the interior sleeve pipe, and forms sealed vacuum structure between outer tube and the interior sleeve pipe, and the proximal end outside of outer tube is equipped with first arch and first recess, and the second type connects and includes: the tubular sleeve comprises a plurality of through holes and a plurality of balls which are circumferentially arranged, and the balls are respectively and movably arranged in the through holes; the tubular movable piece is penetrated in the sleeve, the movable piece is matched with the outer sleeve, and the inner diameter of the movable piece is smaller than the outer diameter of the first bulge; the tubular locking piece is sleeved outside the sleeve, and the locking piece is close to the ball.

Description

Joint assembly, first type joint and second type joint

Technical Field

The embodiment of the application relates to the technical field of quick connectors for fluids, in particular to a connector assembly, a first type connector and a second type connector.

Background

The liquid nitrogen used in the cryoablation operation is at-196 ℃ and the temperature is extremely low, and the minimum working temperature of the joint on the market at present is generally at-20 ℃, so that the liquid nitrogen transmission pipeline cannot be connected by using a common joint.

Accordingly, there is a need for a fitting and fitting assembly for a liquid nitrogen delivery line that can be used in cryoablation procedures.

Disclosure of Invention

In view of the foregoing, the present application provides a joint and a joint assembly to overcome or at least partially solve the foregoing problems.

Embodiments of the present application provide a joint assembly, the joint assembly comprising: a first type of joint, comprising: an inner sleeve; the outer sleeve is sleeved on the inner sleeve, a sealed vacuum structure is formed between the outer sleeve and the inner sleeve, and a first bulge and a first groove are arranged on the outer side of the proximal end of the outer sleeve; a second type of joint, comprising: a tubular sleeve including a plurality of through holes and a plurality of balls arranged in a circumferential direction, the balls being movably disposed in the through holes, respectively; the tubular movable piece is penetrated in the sleeve and can axially move relative to the sleeve, the movable piece is matched with the outer sleeve so as to be penetrated by the first type joint, and the inner diameter of the movable piece is smaller than the outer diameter of the first bulge; the tubular locking piece is sleeved outside the sleeve, and the locking piece is close to the ball; wherein, in the unassembled state, the movable piece is abutted against the plurality of balls from the inner side, and the locking piece and the plurality of balls are in a release state; in the assembled state, the first type connector is inserted into the second type connector, the first protrusion pushes the movable piece away from the balls along the axial direction, so that the balls fall into the first groove, and the locking piece and the balls are in a compressed state.

Optionally, the proximal inner side of the sleeve is provided with a first boss and a first recess adjacent to each other, and the plurality of through holes are circumferentially arranged in the first boss.

Optionally, the movable member includes: the outer side of the first connecting body is provided with a second boss which is sleeved with a spring, and the second boss is matched with the first concave area; the second connector is sleeved on the outer side of the first connector, the second connector and the first connector can move axially relatively, and the spring moves between the second connector and the second boss.

Optionally, the distal end of the first connector is provided with a second groove and a first clamp spring, and the first clamp spring is clamped in the second groove to limit the movement of the distal end of the first connector.

Optionally, the distal end of the first connector has a tapered lumen, and the outer sleeve has a tapered structure that mates with the tapered lumen, the tapered structure being adjacent to the first protrusion.

Optionally, the diameter of the ball is larger than the thickness of the sleeve corresponding to the first boss.

Optionally, a third boss and a second concave area are arranged on the outer side of the sleeve, the locking piece is provided with a second boss, the locking piece is sleeved on the third boss, and the second boss can move in the second concave area so that the second boss and the balls are in a release state or a compression state.

Optionally, a third groove and a second clamp spring are disposed on the outer side of the proximal end of the sleeve, and the second clamp spring is clamped in the third groove, so as to limit the second protrusion to move proximally after the second protrusion of the locking member compresses the plurality of balls.

Optionally, the kit includes a main body portion and an extension portion, and the main body portion is cooperatively connected with the extension portion, so that the main body portion and the extension portion can be assembled or disassembled.

Optionally, the inner diameter of the extension portion is smaller than the inner diameter of the main body portion, so that the outer sleeve is inserted into the extension portion after passing through the movable member.

Optionally, the outer sleeve is provided with a fourth groove and an elastic sealing ring corresponding to the proximal end of the extension part, and the elastic sealing ring is sleeved in the fourth groove.

Another aspect of the present application provides a first type of connector for mating with a second type of connector, the second type of connector comprising: a tubular sleeve including a plurality of through holes and a plurality of balls arranged in a circumferential direction, the balls being movably disposed in the through holes, respectively; the tubular movable piece is penetrated in the sleeve and can axially move relative to the sleeve, the movable piece is matched with the outer sleeve so as to be penetrated by the first type joint, and the inner diameter of the movable piece is smaller than the outer diameter of the first bulge; the tubular locking piece is sleeved outside the sleeve, and the locking piece is close to the ball; the first type of joint comprises: an inner sleeve; the outer sleeve is sleeved on the inner sleeve, a sealed vacuum structure is formed between the outer sleeve and the inner sleeve, and a first bulge and a first groove are arranged on the outer side of the proximal end of the outer sleeve; wherein, in the unassembled state, the movable piece is abutted against the plurality of balls from the inner side, and the locking piece and the plurality of balls are in a release state; in the assembled state, the first type connector is inserted into the second type connector, the first protrusion pushes the movable piece away from the balls along the axial direction, so that the balls fall into the first groove, and the locking piece and the balls are in a compressed state.

In yet another aspect, the present application provides a second type of connector for mating with a first type of connector, the first type of connector comprising: an inner sleeve; the outer sleeve is sleeved on the inner sleeve, a sealed vacuum structure is formed between the outer sleeve and the inner sleeve, and a first bulge and a first groove are arranged on the outer side of the proximal end of the outer sleeve; the second type of joint comprises: a tubular sleeve including a plurality of through holes and a plurality of balls arranged in a circumferential direction, the balls being movably disposed in the through holes, respectively; the tubular movable piece is penetrated in the sleeve and can axially move relative to the sleeve, the movable piece is matched with the outer sleeve so as to be penetrated by the first type joint, and the inner diameter of the movable piece is smaller than the outer diameter of the first bulge; the tubular locking piece is sleeved outside the sleeve, and the locking piece is close to the ball; wherein, in the unassembled state, the movable piece is abutted against the plurality of balls from the inner side, and the locking piece and the plurality of balls are in a release state; in the assembled state, the first type connector is inserted into the second type connector, the first protrusion pushes the movable piece away from the balls along the axial direction, so that the balls fall into the first groove, and the locking piece and the balls are in a compressed state.

According to the technical scheme, the connector and the connector assembly form a vacuum structure in the male connector, so that a medium flowing in the male connector can be insulated from the outside, and low-temperature media such as liquid nitrogen can be effectively transmitted. Based on the design, the elastic sealing ring can be arranged at the proximal end of the extension part corresponding to the outer sleeve, so that the problem of sealing failure can be effectively reduced.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following description will briefly introduce the drawings that are required to be used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are only some embodiments described in the embodiments of the present application, and other drawings may also be obtained according to these drawings for a person having ordinary skill in the art.

FIG. 1 is a cross-sectional view of one embodiment of a joint assembly of the present application in an assembled state;

FIG. 2 is a perspective view of an embodiment of a joint assembly of the present application in a non-assembled state;

FIG. 3 is a cross-sectional view of an embodiment of a joint assembly of the present application in a non-assembled state;

FIG. 4A is a cross-sectional view of an embodiment of a second type of fitting of the present application in an unassembled state;

FIG. 4B is a cross-sectional view of an embodiment of a second type of fitting of the present application in an assembled state;

FIG. 4C is an exploded perspective view of an embodiment of a second type of joint of the present application;

FIG. 4D is an exploded cross-sectional view of an embodiment of a second type of fitting of the present application;

fig. 5 is a cross-sectional view of an embodiment of a first type of joint of the present application.

Element labels

10: a joint assembly; 101: a first type of linker; 1011: an inner sleeve; 1012: an outer sleeve; 1013: a vacuum structure; 1012-1: a first protrusion; 1012-2: a first groove; 102: a second type of joint; 1021: a kit; 1021-1: a through hole; 1021-2: a ball; 1022: a movable member; 1012-3: a first boss; 1012-4: a first recessed region; 1022-1: a first connecting body; 1022-2: a second boss; 1022-3: a spring; 1022-4: a second connector; 1022-5: a second groove; 1022-6: a first clamp spring; 1022-7: a tapered inner cavity; 1022-8: a platform; 1012-5: a conical structure; 1021-3: a third boss; 1021-4: a second recessed region; 1023: a locking member; 1023-1: a second protrusion; 1021-5: a third groove; 1021-6: a second clamp spring; 1021-a: a main body portion; 1021-b: an extension; 1012-6: a fourth groove; 1012-7: and an elastic sealing ring.

Detailed Description

In order to better understand the technical solutions in the embodiments of the present application, the following descriptions will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the embodiments of the present application shall fall within the scope of protection of the embodiments of the present application.

By "proximal" is meant that the joint or joint assembly is placed in the manner of fig. 1, with the right side being proximal. By "distal" is meant that the connector or connector assembly is placed in the manner of fig. 1, with the proximal end on the left. The terms "proximal" and "distal" are relative terms.

Embodiments of the present application are further described below with reference to the accompanying drawings of embodiments of the present application.

Referring to fig. 1-5, in one specific implementation of the present application, there is provided a first type of joint 101 comprising: an inner sleeve 1011; the outer sleeve 1012 is sleeved on the inner sleeve 1011, a sealed vacuum structure 1013 is formed between the outer sleeve 1012 and the inner sleeve 1011, and a first protrusion 1012-1 and a first groove 1012-2 are arranged on the outer side of the proximal end of the outer sleeve 1012.

In another specific implementation of the present application, there is provided a second type of joint 102, comprising: a tubular casing 1021, the casing 1021 including a plurality of through holes 1021-1 and a plurality of balls 1021-2 arranged in a circumferential direction, the plurality of balls 1021-2 being movably disposed in the through holes 1021-1, respectively; a tubular movable member 1022 penetrating through the inside of the casing 1021 and axially movable relative to the casing 1021, the movable member 1022 being adapted to the outer casing 1012 so that the first type joint 101 is penetrated therethrough, the movable member 1022 having an inner diameter smaller than an outer diameter of the first protrusion 1012-1; a tubular locking member 1023 which is sleeved outside the sleeve 1021, and the locking member 1023 is close to the ball 1021-2.

In another implementation of the present application, a joint assembly 10 is provided that is comprised of a first type of joint 101 and a second type of joint 102. Alternatively, the first protrusion 1012-1 is spaced a greater distance from the proximal end of the outer sleeve 1012 than the first recess 1012-2 is spaced from the proximal end of the outer sleeve 1012, whereby upon insertion of the first type connector 101 distally from the proximal end into the second type connector 102, the first protrusion 1012-1 pushes the movable member 1022, causing the movable member 1022 to move distally, dropping into the first recess 1012-2 due to the lack of abutment of the movable member 1022 by the balls 1021-2, and compression of the balls 1021-2 is applied to the balls 1021-2 from the outside through the locking member 1023, thereby firmly connecting the first type connector 101 and the second type connector 102 together. The vacuum structure 1013 may form a heat insulating layer so that a low temperature medium such as liquid nitrogen can be efficiently transferred.

In one embodiment of the present application, the proximal inner side of the sleeve 1021 is provided with a first boss 1012-3 and a first recessed area 1012-4 adjacent to each other, i.e. the inner diameter of the cavity formed by the first boss 1012-3 is smaller than the inner diameter of the cavity formed by the first recessed area 1012-4. A plurality of through holes 1021-1 are circumferentially arranged in the first boss 1012-3 to form a circle of through holes.

In one embodiment of the present application, the movable member 1022 includes: the first connection body 1022-1, the outer side of the first connection body 1022-1 is provided with a second boss 1022-2, the proximal end of the second boss 1022-2 may be provided with a platform 1022-8, and the platform 1022-8 may be used to abut against the ball 1021-2 from the inner side.

The second boss 1022-2 is adapted to the first recessed area 1012-4, and the second boss 1022-2 is movable axially distally or proximally in the first recessed area 1012-4, wherein the second boss 1022-2 is restricted from further proximal movement by the first boss 1012-3 when moved proximally to the first boss 1012-3.

The second connecting body 1022-4 may be sleeved outside the first connecting body 1022-1, and the second connecting body 1022-4 and the first connecting body 1022-1 may be axially movable relative to each other. The second connection body 1022-4 may be composed of two parts of a boss and a supporting part, and a groove may be provided in the case 1021 for the boss of the second connection body 1022-4 to be fixed in the groove.

The outer side of the first connection body 1022-1 may be sleeved with a spring 1022-3, and the spring 1022-3 may be axially stretched or compressed between the second connection body 1022-4 and the second boss 1022-2. In the unassembled state, the spring 1022-3 may be in a stretched state, whereas in the assembled state, the first connection body 1022-1 is moved distally due to the thrust of the first type joint 101, the distance between the second connection body 1022-4 and the second boss 1022-2 is reduced, and the spring 1022-3 is compressed.

In an alternative embodiment, the distal end of the first connecting body 1022-1 is provided with a second groove 1022-5 and a first snap spring 1022-6, and the first snap spring 1022-6 is engaged in the second groove 1022-5 to limit the movement of the distal end of the first connecting body 1022-1, so that the first connecting body 1022-1 cannot pass over the second connecting body 1022-4 when moving proximally, thereby preventing the first connecting body 1022-1 from falling off the second connecting body 1022-4.

In an alternative embodiment, the distal end of the first connector 1022-1 has a tapered lumen 1022-7 and the outer sleeve 1012 has a tapered structure 1012-5 that mates with the tapered lumen 1022-7, the tapered structure 1012-5 being adjacent the first protrusion 1012-1. The tapered lumen 1022-7 and tapered structure 1012-5 facilitate the application of a pushing force by the first type of connector 101 to the first connector 1022-1.

In an alternative embodiment, the diameter of the ball 1021-2 is larger than the thickness of the sleeve 1021 corresponding to the first boss 1012-3, and this design can facilitate the locking member 1023 to more firmly compress the ball 1021-2 in the assembled state.

In an embodiment of the present application, the outer side of the sleeve 1021 is provided with a third boss 1021-3 and a second recess 1021-4, the locking member 1023 is provided with a second protrusion 1023-1, the locking member 1023 is sleeved on the third boss 1021-3, and the second protrusion 1023-1 can axially move in the second recess 1021-4. When the second protrusion 1023-1 moves proximally in the second recess 1021-4 to reach the ball 1021-2, the ball 1021-2 is pressed beyond the contact of the second recess 1021-4 with the surface of the ball 1021-2; when the second protrusion 1023-1 moves distally to release the ball 1021-2, it again enters the second recess 1021-4.

In an embodiment of the present application, a third groove 1021-5 and a second clamp spring 1021-6 are provided on the outer side of the proximal end of the sleeve 1021, and the second clamp spring 1021-6 is engaged with the third groove 1021-5 to limit the second protrusion 1023-1 from moving proximally after the second protrusion 1023-1 of the locking member 1023 compresses the plurality of balls 1021-2.

In one embodiment of the present application, the sleeve 1021 includes a main body portion 1021-a and an extension portion 1021-b, and the main body portion 1021-a is cooperatively connected with the extension portion 1021-b, such as by a threaded connection, a snap-fit connection, or other suitable connection means, so that the main body portion 1021-a and the extension portion 1021-b can be assembled or disassembled.

Alternatively, the movable member 1022 may be a segment, i.e., not extending distally, with the inner diameter lumen of the extension 1021-b having a smaller diameter than the inner diameter lumen of the main body 1021-a, such that the outer sleeve 1012 is inserted into the extension 1021-b after passing through the movable member 1022.

The proximal end of the outer sleeve 1012 corresponding to the extension 1021-b may be provided with a fourth groove 1012-6 and an elastic sealing ring 1012-7, the elastic sealing ring 1012-7 being sleeved in the fourth groove 1012-6. The proximal and distal ends of the first and

second type fittings

101 and 102 are open openings, and the elastic sealing ring 1012-7 seals the outer sleeve 1012 from the extension 1021-b, thereby preventing leakage of cryogenic medium such as liquid nitrogen from the distal end into the space between the outer sleeve 1012 and the extension 1021-b when flowing in the inner sleeve 1011. The elastic sealing ring 1012-7 may be made of rubber or the like. Because the elastic sealing ring 1012-7 made of rubber loses elasticity at low temperature, for example, lower than-20 ℃, the sealing effect is ineffective, and the problem of sealing failure can be effectively reduced by arranging the elastic sealing ring 1012-7 at the proximal end of the outer sleeve 1012 corresponding to the extension 1021-b. The outer sleeve 1012 and the extension 1021-b may also be sealed by an end-face seal.

The proximal end of the first type connector 101 may be connected to a transfer line for transferring cryogenic medium, which may be a bellows, and the vacuum structure 1013 may be evacuated by molecular pumps or sealed by vacuum brazing. Vacuum brazing means that the parts are placed in a vacuum furnace for welding, and vacuum is formed inside the parts after the welding is finished.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the embodiments of the present application, and are not limited thereto; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Claims

1. A joint assembly (10), the joint assembly (10) comprising:

a first type of joint (101), comprising:

an inner sleeve (1011);

an outer sleeve (1012) sleeved on the inner sleeve (1011), wherein a sealed vacuum structure (1013) is formed between the outer sleeve (1012) and the inner sleeve (1011), and a first protrusion (1012-1) and a first groove (1012-2) are arranged on the outer side of the proximal end of the outer sleeve (1012);

a second type of joint (102), comprising:

a tubular casing (1021), the casing (1021) including a plurality of through holes (1021-1) and a plurality of balls (1021-2) arranged in a circumferential direction, the plurality of balls (1021-2) being respectively movably disposed in the through holes (1021-1);

a tubular movable member (1022) penetrating through the interior of the sleeve (1021) and capable of moving axially relative to the sleeve (1021), the movable member (1022) being adapted to the outer sleeve (1012) for the first-type joint (101) to penetrate therethrough, the movable member (1022) having an inner diameter smaller than the outer diameter of the first protrusion (1012-1);

a tubular locking member (1023) which is sleeved outside the sleeve member (1021), and the locking member (1023) is close to the ball (1021-2);

wherein, in the unassembled state, the movable member (1022) is abutted against the plurality of balls (1021-2) from the inside, and the locking member (1023) and the plurality of balls (1021-2) are in a released state; in an assembled state, the first type joint (101) is inserted into the second type joint (102), the first protrusion (1012-1) pushes the movable member (1022) away from the plurality of balls (1021-2) in an axial direction, so that the plurality of balls (1021-2) fall into the first groove (1012-2), and the locking member (1023) and the plurality of balls (1021-2) are in a compressed state.

2. The connector assembly of claim 1, wherein the proximal inner side of the sleeve (1021) is provided with adjacent first bosses (1012-3) and first recessed areas (1012-4), and the plurality of through holes (1021-1) are circumferentially arranged in the first bosses (1012-3).

3. The joint assembly of claim 2, wherein the movable member (1022) comprises:

the first connecting body (1022-1), the outside of the first connecting body (1022-1) is provided with a second boss (1022-2), and is sleeved with a spring (1022-3), and the second boss (1022-2) is matched with the first concave area (1012-4);

the second connector (1022-4) is sleeved on the outer side of the first connector (1022-1), the second connector (1022-4) and the first connector (1022-1) can move axially relatively, and the spring (1022-3) moves between the second connector (1022-4) and the second boss (1022-2).

4. A joint assembly according to claim 3, wherein the distal end of the first connecting body (1022-1) is provided with a second groove (1022-5) and a first snap spring (1022-6), the first snap spring (1022-6) being engaged in the second groove (1022-5) to limit movement of the distal end of the first connecting body (1022-1).

5. A connector assembly according to claim 3, wherein the distal end of the first connector (1022-1) has a tapered lumen (1022-7) and the outer sleeve (1012) has a tapered structure (1012-5) that mates with the tapered lumen (1022-7), the tapered structure (1012-5) being adjacent the first protrusion (1012-1).

6. The joint assembly according to claim 2, wherein the diameter of the ball (1021-2) is larger than the thickness of the sleeve (1021) corresponding to the first boss (1012-3).

7. The joint assembly according to claim 1, wherein a third boss (1021-3) and a second recess (1021-4) are provided on the outer side of the sleeve (1021), the locking member (1023) is provided with a second protrusion (1023-1), the locking member (1023) is sleeved on the third boss (1021-3), and the second protrusion (1023-1) is movable in the second recess (1021-4) so that the second protrusion (1023-1) and the balls (1021-2) are in a released state or a pressed state.

8. The connector assembly of claim 7, wherein a third groove (1021-5) and a second clamp spring (1021-6) are provided on the proximal outer side of the sleeve (1021), and the second clamp spring (1021-6) is engaged with the third groove (1021-5) to restrict proximal movement of the second protrusion (1023-1) after the second protrusion (1023-1) of the locking member (1023) presses the plurality of balls (1021-2).

9. A first type of connector (101) for mating with a second type of connector (102), the second type of connector (102) comprising:

characterized in that the first type of joint (101) comprises:

an inner sleeve (1011);

10. A second type of connector (102) for mating with a first type of connector (101), the first type of connector (101) comprising:

an inner sleeve (1011);

characterized in that the second type of joint (102) comprises: