TWI686220B - Autonomous rotating catheter joint - Google Patents

Abstract

The invention is an autonomously rotating catheter joint, which includes a joint body with an external thread formed at one end and an external joint formed at the other end; a hub is a hollow cylindrical body and one end is rotatably sleeved on the joint body The outer joint part of the other end has an internal thread and a pipe joint part, the pipe joint part extends toward the external space and communicates with the joint body; an upper cover, which is a cover body and is rotatably set on the joint body The outer joint is covered with a hub; a seal is a ring body with elasticity and one side is against the outer joint, and the other side is against the flange; a duct is fixed at one end through the pipe The joint part is rotatably combined with the hub by the joint body, so that when the present invention is applied to surgery, when the hub is rotated to change the direction of the catheter, the tube body externally connected to the joint body does not rotate with it.

Description

Autonomous rotating catheter joint

The invention relates to a medical catheter joint, in particular to a catheter joint that can rotate independently.

For the catheter connector for medical treatment in the prior art, please refer to FIGS. 6 and 7. It includes a connector body 90, a hub 91 and a first catheter 92. The connector body 90 is a hollow cylindrical body and has an external thread at one end , The other end has an outer joint portion 93 and a tapered portion 94, the outer joint portion 93 is recessed on the outer wall surface of the joint body 90, the tapered portion 94 is a hollow conical tube extending from the joint body 90, the hub 91 is a hollow cylindrical body with an internal thread at one end and an internal coupling portion 95 at the other end. The internal coupling portion 95 corresponds to the external coupling portion 93. The joint body 90 will pass through the hub 91 at the end with the external coupling portion 93 Rotatingly coupled to the inner joint 95 of the hub 91 for positioning, the first conduit 92 is a hollow tube and one end penetrates the hub 91 and is fixed to the tapered portion 94 of the joint body 90.

Please refer to FIGS. 7 and 8. When the catheter joint is used for surgery, a second catheter 96 and a third catheter 97 are further connected. The second catheter 96 is a hollow tube with an inner diameter larger than the first catheter 92 Outer diameter, one end of the second catheter 96 is used to protrude into the human body, and the other end has an engaging portion 98 formed with an external thread. The external thread is combined with the internal thread of the hub 91 and penetrates to fix the first catheter 92 is located at one end in the hub 91, and the other end of the first catheter 92 extends into the second catheter 96 and extends toward the human body; the third catheter 97 is a hollow tube and one end is used to connect the medical accessory device 100, the other end There is a connecting portion 99, the connecting portion 99 is formed with an internal thread, the internal thread of the connecting portion 99 is combined with the external thread of the joint body 90, and the second catheter 96 which extends one end into the body through the catheter joint as a medium is connected to the The third catheter 97 of the medical accessory instrument 100 is engaged for surgical use.

However, the prior art catheter joint and the second catheter 96 and the third catheter 97 cannot be rotated relative to each other. To change the direction of rotation of one end, the entire set of catheter joints, the first The simultaneous rotation of the second catheter 96 and the third catheter 97 can be completed, and when the doctor wants to change the direction in which the second catheter 96 extends into the human body during the operation, the catheter joint can only be rotated outside the body to make the second catheter 96 connected Twisting occurs to change the direction, but during the rotation direction, because the medical accessory device 100 is connected to the catheter connector through the third conduit 97, the medical accessory device 100 is bound to rotate accordingly, which is likely to cause complicated medical accessory devices 100 collision or entanglement with other pipelines.

In addition, during the operation, the doctor will first make a stoma on the human tissue, and then the second catheter 96 is sent into the body through this stoma. Because the human tissue has viscoelastic properties, the stoma may shrink or even shrink due to the nature of the human tissue Is closed, when the second catheter 96 enters the body through the ostomy, the human tissue around the ostomy will cover the second catheter 96 and there will be a certain friction force between the contact surface of the human tissue and the second catheter 96, and When the doctor holds the catheter connector with his right hand and needs to rotate clockwise, because the hub 91 of the catheter connector is designed to lock the joint portion 98 of the second catheter 96 in a clockwise direction, even if the contact surface of the second catheter 96 with human tissue exists The friction force prevents the joint 98 on the second catheter 96 from twisting, and the joint 98 and the hub 91 will not loosen; however, when the catheter joint is rotated in the counterclockwise direction with the right hand, the human tissue and the second catheter There is friction on the contact surface of 96 to prevent the joint 98 from rotating, so the joint 98 and the hub 91 are likely to loosen and cause leakage, causing liquid to flow out or air to enter the catheter to cause embolism, resulting in unpredictable consequences of surgery Therefore, the overall structure of the prior art catheter joint has the problems and shortcomings as mentioned above, and needs to be improved.

In view of the shortcomings and deficiencies of the prior art, the present invention provides an autonomously rotating catheter joint, which can be achieved by rotatably combining the joint body with the hub and connecting a catheter, so that when the user rotates the hub, the joint body does not Follow the purpose of rotating at the same time.

In order to achieve the above purpose of the invention, the technical means adopted by the present invention is to design an autonomous rotating catheter joint, which includes: A joint body, which is a hollow cylindrical body and has a positioning portion protruding around one end, the positioning portion is formed with an external thread, the external thread is protruded on the outer wall surface of the joint body adjacent to the end, and the other of the joint body One end has an outer joint; A hub, which is a hollow cylindrical body and an inner joint surface, a flange and a connecting portion are formed around the inner wall surface, the inner joint portion and the flange are protrudingly provided on the inner wall surface of the hub and rotatably sleeved At the outer joint part, the flange and the outer joint part form an accommodating space, the connecting part is formed at the other end of the hub and has an internal thread and a pipe joint part, the internal thread is formed on the hub On the inner wall surface, the pipe joint is a hollow pipe body and protrudingly provided on the flange to extend toward the outer space, and the pipe joint is in communication with the joint body; An upper cover, which is a cover body and has a top surface and a bottom surface, the top surface is penetrated by a set of holes, the set of holes is rotatably set on the outer joint portion of the joint body, the bottom surface is in contact with the The outer wall of the hub; A seal, which is an elastic ring body and is arranged in the accommodating space, one side of the seal is in contact with the outer joint, and the other side is in contact with the flange; A pipe is a hollow pipe body and one end of the pipe joint is fixed on the hub.

Further, in the self-rotating catheter joint, the outer coupling part includes a coupling groove and a pushing portion, the coupling groove surrounds the concave wall surface of the coupling body, and the pushing portion surrounds the convex portion of the coupling body At the end, the shape of the outer joint portion corresponds to the shape of the inner wall surface of the hub.

Further, in the self-rotating catheter joint, wherein the positioning portion is further formed with a stopper, the stopper surrounds and protrudes on the outer wall surface of the joint body and is adjacent to the external thread.

Further, in the self-rotating catheter joint, the inner annular surface of the inner joint portion of the hub is formed with a slope.

Further, in the self-rotating catheter joint, the flange of the hub is formed with a stepped surface, the stepped surface abutting against the seal.

Further, in the self-rotating catheter joint, the tube joint of the hub is a hollow cone, and the outer diameter of the tube joint gradually decreases toward the external space.

Further, in the self-rotating catheter joint, the outer wall surface of the hub is provided with a plurality of anti-slip parts, and the plurality of anti-slip parts extend along the two ends of the hub.

Further, in the self-rotating catheter joint, the seal is an O-shaped rubber ring.

The advantage of the present invention is that, by rotatably combining the joint body with the hub, when the present invention is applied to surgery, the tube body connected to the human body is connected to the tube joint portion of the hub and connected to the tube body of the accessory instrument It is connected to the joint body. When the body connected to the tube wants to rotate, it can be changed by turning the hub on the spontaneously rotating catheter joint clockwise or counterclockwise, and the tube connected to the attached instrument during the rotation There is no accompanying rotation; in addition, because the hub has the characteristics of free rotation, even if there is a certain friction force between the body-connected tube and the human tissue, the hub can be rotated clockwise or counterclockwise without making The tube body and joint body are loosened when connecting with the attached instrument.

In the following, with reference to the drawings and preferred embodiments of the present invention, the technical means adopted by the present invention to achieve the intended purpose of the invention will be further described.

Please refer to FIG. 1, the self-rotating catheter joint of the present invention includes a joint body 10, a hub 20, an upper cover 30, a sealing member 40 and a catheter 50.

2 and 3, the connector body 10 is a hollow cylindrical body and has a positioning portion 11 at one end, the positioning portion 11 is formed with an external thread 111 and a stopper 112, the external thread 111 protruding from the joint body The outer wall surface of 10 is adjacent to the end, and the stopper 112 surrounds the outer wall surface of the joint body 10 and is spaced a distance from the external thread 111; the other end of the joint body 10 is formed with an outer joint portion 12, the outer joint portion 12 includes A combining groove 121 and a pushing portion 122 surround the concave groove 121 on the outer wall surface of the joint body 10, and the pushing portion 122 surrounds the convex portion of the joint body 10 and forms a hierarchical structure.

The hub 20 is a hollow cylindrical body and has an internal space. The inner wall surface of the hub is protrudingly provided with an inner joint portion 21, a flange 22 and a connecting portion 23. The inner ring surface of the inner joint portion 21 is formed with an inclined surface 211. The coupling portion 21 is rotatably engaged with the outer coupling portion 12 of the joint body 10. In detail, the inner coupling portion 21 can extend into the coupling groove 121 of the outer coupling portion 12 so that the hub 20 is snapped therein, and the inclined surface 211 can During the assembly process, the hub 20 is easier to fit into the outer joint portion 12 of the joint body 10; the flange 22 forms a level surface 221, which extends from the level surface 221 of the flange 22 to the hub as viewed from the sectional view of FIG. The inner wall surface of 20 forms a groove-shaped structure as a whole. The shape of the pushing portion 122 of the joint body 10 corresponds to the shape of the groove structure of the hub 20. When the pushing portion 122 abuts against the groove bottom of the groove structure of the hub 20, the pushing An accommodating space is formed between the resisting portion 122 and the flange 22; the other end of the hub 20 relative to the flange 22's class surface 221 has a connecting portion 23 formed with an internal thread 231 and a pipe connecting portion 232 The screw thread 231 is formed on the inner wall surface of the hub 20, the tube connection portion 232 protrudes from the flange 22 and extends toward the outer space, the tube connection portion 232 is a hollow cone-shaped body and the outer diameter gradually decreases toward the outer space direction, the tube connection portion 232 The groove bottom of the groove structure at the other end communicates with the joint body 10; the outer wall surface of the hub 20 is provided with a plurality of anti-slip portions 24 around the interval, and each anti-slip portion 24 extends in the direction of the two ends of the hub 20 to form a long body, but Not limited to this, the shape of the anti-slip portion 24 can be changed according to the user's needs, and can also be in the form of bites, ribs, etc., only to achieve increased friction when the hand grips the outer wall surface of the hub 20 The effect of preventing sliding is sufficient.

The upper cover 30 is a circular cover and has a top surface and a bottom surface. The top surface is penetrated by a set of holes 31, which are rotatably set in the coupling groove 121 formed by the outer coupling portion 12 of the joint body 10, The bottom surface of the upper cover 30 abuts against the outer wall surface of the hub 20. In detail, the upper cover 30 covers the inner joint portion 21 of the hub 20 therein to achieve a clamping effect, so that the hub 20 is rotatably positioned therein without detaching.

The sealing member 40 is an elastic ring body, in this embodiment, an O-shaped rubber ring, which is disposed in the accommodating space formed between the groove-like structure of the hub 20 and the pushing portion 122 of the joint body 10 to seal One side of the member 40 abuts against the groove bottom of the groove-like structure, the other side of the sealing member 40 abuts against the pushing portion 122 of the joint body 10, and the sealing member 40 has similar bearings except for sealing the accommodating space Function, so that the hub 20 can rotate relative to the joint body 10.

The catheter 50 is a hollow tube body, and one end of the tube 50 is fixed to the hub 20 of the hub 20. The other end of the tube 50 is used to penetrate into the human body.

When using the present invention, please refer to FIG. 3 and FIG. 4, there is a first connecting pipe 60 and a second connecting pipe 70, one end of the first connecting pipe 60 is used to extend into the human body, and the other end has a first connecting piece 61, which has an external thread, the inner diameter of the first connecting tube 60 is greater than the outer diameter of the catheter 50; one end of the second connecting tube 70 is used to connect the medical accessory instrument 80, and the other end has a second connecting member 71, which has an inner Thread; when you want to connect the medical accessory 80 to the human body, first connect the external thread 111 formed by the joint body 10 of the autonomous rotating catheter connector of the present invention to the internal thread of the second connector 71, and then connect the catheter 50 from The first connecting piece 61 extends in, and the internal thread 231 formed by the connecting portion 23 of the hub 20 is connected with the external thread of the first connecting piece 61, so that the first connecting pipe 60, the autonomously rotating catheter joint and the second connecting pipe 70 constitutes a catheter 50 assembly.

As shown in FIG. 5, when used in surgery, one end of the first connecting tube 60 will be gradually fed into the body, and the autonomous rotating catheter joint, the second connecting tube 70 and the medical accessory instrument 80 will remain outside the body, and When the first connecting tube 60 fed into the body wants to rotate, it can change the direction of the first connecting tube 60 by rotating the hub 20 on the self-rotating catheter joint clockwise or counterclockwise, and the joint body during the rotation 10 is not accompanied by rotation, so that the second connecting tube 70 connected to the medical accessory 80 does not need to be twisted at the same time; in addition, because the hub 20 has the characteristics of free rotation, even if the first connecting tube 60 and human tissue There is a certain frictional force on the contact surface, and the hub 20 can still be rotated clockwise or counterclockwise without loosening the second connecting tube 70 from the joint body 10.

The above is only the preferred embodiment of the creation, and does not limit the creation in any way. Although the creation has been disclosed in the preferred embodiment as above, it is not intended to limit the creation. Generally, a knowledgeable person, without departing from the scope of this creative technical solution, can use the technical content disclosed above to make some changes or modifications as an equivalent embodiment of an equivalent change, but any content that does not deviate from this creative technical solution is based on this Any simple modifications, equivalent changes, and modifications made to the above embodiments by the technical essence of the creation still fall within the scope of this creative technical solution.

10: Connector body 11: Positioning Department 111: external thread 112: stop 12: outer joint 121: Combination groove 122: Pushing Department 20: Wheel 21: inner joint 211: Bevel 22: flange 221: Class noodles 23: Connection 231: internal thread 232: Pipe joint 24: Anti-slip part 30: upper cover 31: Sleeve 40: Seal 50: Catheter 60: the first connecting tube 61: First connector 70: Second connection tube 71: Second connector 80: Medical accessories 90: connector body 91: Wheel 92: First catheter 93: outer joint 94: cone 95: inner joint 96: second catheter 97: third catheter 98: Joint 99: connection 100: Medical ancillary equipment

FIG. 1 is a perspective external view of the present invention. Figure 2 is an exploded view of the present invention. Figure 3 is a cross-sectional view of the present invention. 4 is a schematic view of the present invention before joining. 5 is a schematic view of the present invention after joining. 6 is a perspective external view of the prior art. 7 is a cross-sectional view of the prior art. Fig. 8 is a schematic diagram of the prior art.

10: Connector body

11: Positioning Department

111: external thread

112: stop

20: Wheel

24: Anti-slip part

30: upper cover

50: Catheter

Claims (8)

An autonomous rotating catheter joint, comprising: A joint body, which is a hollow cylindrical body and has a positioning portion protruding around one end, the positioning portion is formed with an external thread, the external thread is protruded on the outer wall surface of the joint body adjacent to the end, and the other of the joint body One end has an outer joint; A hub, which is a hollow cylindrical body and an inner joint surface, a flange and a connecting portion are formed around the inner wall surface, the inner joint portion and the flange are protrudingly provided on the inner wall surface of the hub and rotatably sleeved At the outer joint part, the flange and the outer joint part form an accommodating space, the connecting part is formed at the other end of the hub and has an internal thread and a pipe joint part, the internal thread is formed on the hub On the inner wall surface, the pipe joint is a hollow pipe body and protrudingly provided on the flange to extend toward the outer space, and the pipe joint is in communication with the joint body; An upper cover, which is a cover body and has a top surface and a bottom surface, the top surface is penetrated by a set of holes, the set of holes is rotatably set on the outer joint portion of the joint body, the bottom surface is in contact with the The outer wall of the hub; A seal, which is an elastic ring body and is arranged in the accommodating space, one side of the seal is in contact with the outer joint, and the other side is in contact with the flange; A pipe is a hollow pipe body and one end of the pipe joint is fixed on the hub. The self-rotating catheter joint according to claim 1, wherein the outer joint portion includes a joint groove and a pushing portion, the joint groove surrounds the concave outer wall surface of the joint body, and the push resisting portion surrounds the convex surface of the joint body At the end, the shape of the outer joint portion corresponds to the shape of the inner wall surface of the hub. The spontaneously rotating catheter joint according to claim 1 or 2, wherein the positioning portion is further formed with a stopper, which is protrudingly provided on the outer wall surface of the joint body and is adjacent to the external thread. The self-rotating catheter joint according to claim 3, wherein the inner annular surface of the inner joint portion of the hub is formed with a slope. The self-rotating catheter joint according to claim 1, wherein the flange of the hub is formed with a stepped surface, the stepped surface abutting against the seal. The self-rotating catheter joint according to claim 5, wherein the tube joint of the hub is a hollow cone, and the outer diameter of the tube joint gradually decreases toward the direction of the external space. The self-rotating catheter joint according to claim 6, wherein the outer wall surface of the hub is provided with a plurality of anti-slip parts, and the plurality of anti-slip parts extend in the direction of both ends of the hub. The self-rotating catheter joint according to claim 7, wherein the seal is an O-shaped rubber ring.

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