Double-cavity drainage device with guide wire for minimally invasive surgery

Abstract

The double-cavity drainage device with the guide wire for the minimally invasive laparoscopic surgery comprises a three-way connector, an injection tube, a three-way one-way valve and an asymmetric double-cavity cross drainage tube, and the three-way connector comprises a body, a first port, a second port and a third port. In the application, the asymmetric double-cavity cross-shaped drainage tube is inserted between the port III and the conical joint until the top of the asymmetric double-cavity cross-shaped drainage tube is abutted against the step, and the locking sleeve is rotated to be screwed with the separation flap and enable the cross-shaped drainage tube to be tightly attached to the joint, so that the asymmetric double-cavity cross-shaped drainage tube is fixed, and the design of the conical joint is realized; the connection airtightness of the asymmetric double-cavity cross drainage tube and the third port is guaranteed, friction resistance generated in the connection process is reduced by reducing the contact surface, the asymmetric double-cavity cross drainage tube is fixed through the locking sleeve and the partition valve, a traditional nut locking mode is replaced, the fixing process is simpler, and the sealing effect is better. And the production and assembly time is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a wire-guided double-lumen drainage device for minimally invasive surgery. Background Technique

[0002] The wire-guided double-lumen drainage tube for minimally invasive surgery is a medical device mainly used for draining liquids or gases during surgical operations, and helping patients discharge secretions, blood or effusions in the body after surgery to prevent infection and promote healing.

[0003] See the attached Figure 1 , most of the existing wire-guided double-lumen drainage devices for minimally invasive surgery include a four-way joint, a flushing tube, an injection tube and a double-lumen cross drainage tube. Many functions are integrated on the four-way joint, resulting in an oversized outer dimension of the joint, which cannot pass through the trocar during the operation. Therefore, the drainage tube cannot be combined with the tube body when placing the drainage tube. The drainage tube needs to be placed separately, and the pipeline assembly is carried out after removing the trocar.

[0004] In the specific implementation process of the existing wire-guided double-lumen drainage device for minimally invasive surgery, since the connection interface of the asymmetric double-lumen cross drainage tube is a curved surface, and the material of the asymmetric double-lumen cross drainage tube is medical silicone material, the surface characteristic of this material is that it has a large viscosity. Most of the ports of the existing three-way joints are directly designed to be imitations of the asymmetric double-lumen cross drainage tube. Therefore, when the asymmetric double-lumen cross drainage tube is installed and contacted with port three, a large resistance will be reflected, affecting the installation efficiency. Improper installation is likely to cause leakage. Therefore, it is urgent to propose a corresponding wire-guided double-lumen drainage device for minimally invasive surgery to solve the above problems. Content of the Utility Model

[0005] The purpose of the utility model is to propose a wire-guided double-lumen drainage device for minimally invasive surgery in order to solve the above problems.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A wire-guided double-lumen drainage device for minimally invasive surgery, including a three-way joint, an injection tube, a three-way one-way valve and an asymmetric double-lumen cross drainage tube. The three-way joint includes a main body, port one, port two and port three. The three-way one-way valve is connected to port two through a pipeline. A tapered joint is fixedly connected to the outer wall of port three. A step is formed between the tapered joint and port three, and the cross section of the tapered joint is a semi-circular arc that fits the inner cavity contour of the tube body. The asymmetric double-lumen cross drainage tube is inserted between the tapered joint and port three, and a locking component for locking the asymmetric double-lumen cross drainage tube is arranged on the outer wall of port three.

[0008] Preferably, the locking assembly includes a plurality of groups of partition flaps fixedly connected to the bottom of port three, and the outer wall of port three is screwed and connected to the locking sleeve.

[0009] Preferably, the outer walls of the plurality of groups of septum petals are all fixedly connected to the limiting blocks.

[0010] Preferably, the three outer walls of the port are fixedly connected with a protrusion, and the outer wall of the protrusion is slidably connected to the inner wall of the locking sleeve through a sliding groove.

[0011] Preferably, a Robert clamp is integrated at the input end of the three-way one-way valve.

[0012] Preferably, the outer wall of the arc-shaped end of the main body is provided with annularly distributed convex teeth.

[0013] Preferably, the inclination angle between the port 1 and the main body is an acute angle.

[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0015] 1. In the present application, the asymmetric double-lumen cross drainage tube is inserted between the port three and the conical joint until the top of the asymmetric double-lumen cross drainage tube abuts against the step, and the locking sleeve is rotated to screw it with the septum flap to achieve the fixation of the asymmetric double-lumen cross drainage tube. The design of the conical joint ensures the airtightness of the connection between the asymmetric double-lumen cross drainage tube and the port three, while reducing the friction components generated during the connection process by reducing the contact surface. The locking sleeve and the septum flap are used to fix the asymmetric double-lumen cross drainage tube, replacing the traditional nut locking method. The fixing process is simpler and the production assembly time is effectively reduced.

[0016] 2. In this application, while rotating the locking sleeve, the slide groove inside the locking sleeve will slide and cooperate with the protrusions on the three outer walls of the port until the protrusions abut against the other extreme of the slide groove. At this time, the locking sleeve completes the fixation of the asymmetric double-lumen cross drainage tube, thereby limiting the rotation cycle of the locking sleeve without affecting the rotation of the locking sleeve, and avoiding excessive tightening of the locking sleeve. The compact structure can effectively save the overall size of the joint, which is conducive to the smooth passage of the three-way joint through the card, thereby reducing the difficulty of operation for medical staff.

[0017] 3. In the present application, the conical joint is designed with a semicircular arc structure that imitates the inner cavity of the pipe body, and the whole is in a stepped form. The front half mainly serves as a guide and does not need to completely fit the inner cavity of the pipe body. In the back half of the joint, the joint is consistent in shape with the inner cavity of the pipe body, and its size is slightly larger than the inner cavity of the pipe body. Under the action of the extrusion force inside and outside the tee joint, a seal can be achieved at this point.

[0018] 4. In the present application, the inclination angle between the port 1 and the main body is an acute angle, so that the guide wire can smoothly pass through the guide wire hole. Brief Description of the Drawings

[0019] Figure 1 Fig. shows a schematic diagram of the overall structure provided according to an embodiment of the present invention;

[0020] Figure 2 Fig. shows a schematic diagram of the structure of a three-way one-way valve provided according to an embodiment of the present invention;

[0021] Figure 3 Fig. shows a schematic diagram of the bump structure provided according to an embodiment of the present invention;

[0022] Figure 4 Fig. shows a schematic diagram of the structure of a tapered joint provided according to an embodiment of the present invention.

[0023] Legend Explanation:

[0024] 1. Three-way joint; 101. Main body; 102. Port one; 103. Port two; 104. Port three; 2. Syringe tube; 3. Three-way one-way valve; 4. Robert clamp; 5. Locking sleeve; 6. Asymmetric double-chamber cross drainage tube; 7. Bump; 8. Septal flap; 9. Limiting block; 10. Tapered joint; 11. Step; 12. Slide groove. Detailed Embodiment

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0026] Please refer to Figures 1-4 , the present invention provides a technical solution:

[0027] A double-lumen drainage device with a guide wire for minimally invasive surgery, comprising a three-way joint 1, a syringe tube 2, a three-way one-way valve 3 and an asymmetric double-chamber cross drainage tube 6. The three-way joint 1 includes a main body 101, a port one 102, a port two 103 and a port three 104. The three-way one-way valve 3 is connected to the port two 103 through a pipeline. A tapered joint 10 is fixedly connected to the outer surface wall of the port three 104. A step 11 is formed between the tapered joint 10 and the port three 104, and the cross section of the tapered joint 10 is a semi-circular arc that fits the inner cavity contour of the pipe body. The asymmetric double-chamber cross drainage tube 6 is inserted between the tapered joint 10 and the port three 104, and a locking component for locking the asymmetric double-chamber cross drainage tube 6 is provided on the outer surface wall of the port three 104;

[0028] Insert the asymmetric double-lumen cross drainage tube 6 between port three 104 and the conical joint 10 until the top of the asymmetric double-lumen cross drainage tube 6 abuts against the step 11, rotate the locking sleeve 5 to screw it with the outer wall of port three 104, and contract the septum 8 to fix the asymmetric double-lumen cross drainage tube 6. The design of the conical joint 10 ensures the airtightness of the connection between the asymmetric double-lumen cross drainage tube 6 and port three 104, while reducing the friction components generated during the connection process by reducing the contact surface. The locking sleeve 5 and the septum 8 are used to fix the asymmetric double-lumen cross drainage tube 6, replacing the traditional nut locking method. The fixing process is simpler and the production and assembly time is effectively reduced.

[0029] Specifically, Figure 2 and Figure 4 As shown, the locking assembly includes multiple groups of septum flaps 8 fixedly connected to the bottom of port three 104, the outer wall of port three 104 is screwed together with the locking sleeve 5, the locking sleeve 5 is rotated to screw together with the outer wall of port three 104, and the septum flaps 8 contract to fix the asymmetric double-cavity cross drainage tube 6, and the outer walls of the multiple groups of septum flaps 8 are fixedly connected to the limiting blocks 9, thereby preventing the locking sleeve 5 from detaching from the septum flaps 8.

[0030] Specifically, Figure 2 and Figure 3 As shown, the outer wall of the port three 104 is fixedly connected with a protrusion 7, and the outer wall of the protrusion 7 is slidably connected to the inner wall of the locking sleeve 5 through the slide groove 12. When the locking sleeve 5 is rotated, the slide groove 12 inside the locking sleeve 5 will slide and cooperate with the protrusion 7 on the outer wall of the port three 104 until the protrusion 7 abuts against the other extreme end of the slide groove 12. At this time, the locking sleeve 5 completes the fixation of the asymmetric double-cavity cross drainage tube 6, thereby limiting the rotation period of the locking sleeve 5 without affecting the rotation of the locking sleeve 5, thereby preventing the locking sleeve 5 from being over-tightened.

[0031] Specifically, Figure 1 and Figure 2 As shown, the input end of the three-way one-way valve 3 is integrated with a Robert clamp 4 to facilitate the installation of the drainage device as a whole. The outer wall of the arc-shaped end of the main body 101 is provided with annularly distributed convex teeth to increase the friction force and ensure the stable rotation of the locking sleeve 5. The inclination angle of the port 102 and the main body 101 is an acute angle, so that the guide wire can smoothly pass through the guide wire hole.

[0032] Working principle: insert the asymmetric double-lumen cross drainage tube 6 between the port three 104 and the conical joint 10 until the top of the asymmetric double-lumen cross drainage tube 6 abuts against the step 11, rotate the locking sleeve 5 to make it screwed with the outer wall of the port three 104, and the septum 8 contracts to fix the asymmetric double-lumen cross drainage tube 6. The design of the conical joint 10 ensures the airtightness of the connection between the asymmetric double-lumen cross drainage tube 6 and the port three 104, while reducing the friction components generated during the connection process by reducing the contact surface, and the locking sleeve 5 and the septum 8 are used to realize The present asymmetric double-lumen cross drainage tube 6 fixing method replaces the traditional nut locking method, the fixing process is simpler, and the production and assembly time is effectively reduced. While rotating the locking sleeve 5, the slide groove 12 inside the locking sleeve 5 will slide with the protrusion 7 on the outer wall of the port three 104 until the protrusion 7 abuts against the other extreme end of the slide groove 12. At this time, the locking sleeve 5 completes the fixing of the asymmetric double-lumen cross drainage tube 6, thereby limiting the rotation cycle of the locking sleeve 5 without affecting the rotation of the locking sleeve 5, and avoiding excessive tightening of the locking sleeve 5.

[0033] The above description of the embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A double-lumen drainage device with a guidewire for minimally invasive surgery, comprising a three-way connector (1), an injection tube (2), a three-way one-way valve (3) and an asymmetric double-lumen cross drainage tube (6), characterized in that: The three-way connector (1) comprises a main body (101), a port one (102), a port two (103) and a port three (104); the three-way one-way valve (3) is connected to the port two (103) via a pipeline; the outer wall of the port three (104) is fixedly connected with a conical connector (10); a step (11) is formed between the conical connector (10) and the port three (104); and the cross section of the conical connector (10) is in a semicircular arc shape that fits the inner cavity contour of the tube body; the asymmetric double-lumen cross drainage tube (6) is inserted between the conical connector (10) and the port three (104); and the outer wall of the port three (104) is provided with a locking component for locking the asymmetric double-lumen cross drainage tube (6).

2. A double-lumen drainage device with a guidewire for minimally invasive surgery according to claim 1, characterized in that: The locking assembly comprises a plurality of groups of partition flaps (8) fixedly connected to the bottom of the port three (104), and the outer wall of the port three (104) is screwed and connected to the locking sleeve (5).

3. A double-lumen drainage device with a guidewire for minimally invasive surgery according to claim 2, characterized in that: The outer surfaces of the plurality of groups of partition petals (8) are all fixedly connected to the limiting blocks (9).

4. A double-lumen drainage device with a guidewire for minimally invasive surgery according to claim 3, characterized in that: The outer wall of the port three (104) is fixedly connected with a protrusion (7), and the outer wall of the protrusion (7) is slidably connected to the inner wall of the locking sleeve (5) through a sliding groove (12).

5. A double-lumen drainage device with a guidewire for minimally invasive surgery according to claim 4, characterized in that: The input end of the three-way one-way valve (3) is integrated with a Robert clamp (4).

6. A double-lumen drainage device with a guidewire for minimally invasive surgery according to claim 5, characterized in that: The outer wall of the arc-shaped end of the main body (101) is provided with annularly distributed protruding teeth.

7. A double-lumen drainage device with a guidewire for minimally invasive surgery according to claim 6, characterized in that: The inclination angle between the port 1 (102) and the main body is an acute angle.

Images