Disposable minimally invasive expansion drainage device for medical operation

Abstract

The utility model discloses a disposable minimally invasive dilation drainage device for medical surgery, which comprises a sleeve, the right end of the sleeve is fixedly connected with a dilation port, the inside of the sleeve is slidably sleeved with a dilation tube, the right end of the dilation tube is provided with a plurality of anti-skid grooves, and the anti-skid grooves are communicated with the dilation port. The multiple anti-skid grooves are evenly distributed in the expansion pipe, the right end of the expansion pipe is connected with an end cover through threads, an expansion mechanism is arranged in the sleeve, and a limiting mechanism is arranged on the expansion pipe. The expansion drainage work of the sleeve can be achieved by pushing the expansion pipe to slide along the interior of the sleeve, the rolling balls are in sliding connection with the guide rail, when the rolling balls slide along the inclined face of the guide rail, pushing extrusion force can be exerted on the guide rail, expansion of the sleeve can be achieved, and the service life of the sleeve is prolonged. The sleeve can be gradually expanded along with the gradual movement of the ball, and the expansion pipe does not need to be pulled out and replaced midway.

Description

Technical Field

[0001] The utility model relates to the technical field of drainage devices, in particular to a disposable minimally invasive dilatation drainage device for medical surgery. Background Art

[0002] Percutaneous puncture is to gradually expand the minimally invasive hole to the required size through the method of puncture expansion, so as to establish a passage and enable the relevant instruments to reach the chest cavity, abdominal cavity, renal pelvis, bladder or a certain lesion through the passage. The utility model patent with the patent authorization announcement number CN211066794U discloses a disposable minimally invasive expansion and drainage kit. The minimally invasive expansion and drainage kit includes an expansion tube assembly, the expansion tube assembly includes a sleeve and an expansion tube, the sleeve includes a conical front end, a sleeve body and a trumpet-shaped tail end, the conical front end, the trumpet-shaped tail end and the expansion tube are made of hard materials, the side wall of the sleeve body is made of elastic material, the center of the sleeve is provided with a sleeve channel that penetrates axially, the outer diameter of the expansion tube is greater than the inner diameter of the sleeve channel, and the expansion tube is inserted into the sleeve channel through the trumpet-shaped tail end to make the outer diameter of the sleeve body larger. The expansion tube in the kit is easy to operate and use, and can reduce the damage of the expansion tube to the surrounding soft tissues and alleviate the pain of the patient.

[0003] In the above prior art, when the size of the cannula needs to be changed during the use of the drainage device, the original expansion tube needs to be pulled out and replaced with another expansion tube of another size for expansion, which is extremely inconvenient during the operation and affects the operation. Therefore, improvement is needed. Utility Model Content

[0004] The utility model aims to provide a disposable minimally invasive dilation and drainage device for medical surgery, which solves the problem of inconvenient adjustment of the expansion size of the sleeve.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a disposable minimally invasive dilation and drainage device for medical surgery, comprising a sleeve, the right end of the sleeve is fixedly connected with an expansion port, the interior of the sleeve is slidably sleeved with an expansion tube, the right end of the expansion tube is provided with an anti-slip groove, the number of the anti-slip grooves is multiple, and the multiple anti-slip grooves are evenly distributed on the expansion tube, the right end of the expansion tube is connected with an end cap by a thread, the interior of the sleeve is provided with an expansion mechanism, and the expansion tube is provided with a limiting mechanism.

[0006] Preferably, the expansion mechanism includes a guide rail, and the inner wall of the sleeve is fixedly connected to two symmetrically distributed guide rails, the guide rails are provided with guide grooves, the guide grooves are slidably connected with balls, the outer side of the balls is movably sleeved with a fixed seat, and the fixed seat is connected to the expansion tube through a bearing. By designing the expansion mechanism, it is convenient to adjust the expansion size of the sleeve.

[0007] Preferably, a movable groove is provided inside the fixing seat, and a ball is movably connected inside the movable groove. By designing the movable groove, the ball can rotate and slide inside the fixing seat.

[0008] Preferably, the limiting mechanism comprises a slot, an insert block, a spring, a guide rod, and a guide seat. The inner side wall of the sleeve is provided with a slot, the slot is slidably sleeved with an insert block, the insert block is provided with a spring, the insert block is slidably sleeved with a guide rod, the guide rod is fixedly connected to the outer surface of the expansion tube, the outer side of the insert block is slidably sleeved with a guide seat, and the guide seat is fixedly connected to the expansion tube. By designing the limiting mechanism, the expansion tube can be limited.

[0009] Preferably, there are a plurality of slots, and the plurality of slots are evenly distributed on the inner side wall of the sleeve. The slots are designed so that the insert block can be inserted into slots at different positions.

[0010] Preferably, one end of the spring is fixedly connected to the plug block, and the other end of the spring is fixedly connected to the guide rod. The spring is designed so that the action of the spring can act on the plug block.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0012] 1. The utility model is designed to push the expansion tube to slide along the inside of the sleeve to achieve the expansion and drainage work of the sleeve. Through the sliding connection between the ball and the guide rail, when the ball slides along the inclined surface of the guide rail, it will give the guide rail a pushing and squeezing force to achieve the expansion of the sleeve. With the gradual movement of the ball, the sleeve can be gradually expanded without pulling out and replacing the expansion tube midway.

[0013] 2. The utility model can limit the expansion tube by designing the connection between the plug block and the slot to prevent it from sliding relative to the sleeve, and can limit and fix the sleeve after expansion to prevent the expansion tube from continuously moving and causing continuous expansion of the sleeve, thereby improving the stability of the sleeve after expansion. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional diagram of the overall structure of the utility model;

[0015] Figure 2 For this utility model Figure 1 A cutaway perspective view of

[0016] Figure 3 For this utility model Figure 2 A magnified image of point A;

[0017] Figure 4 For this utility model Figure 1 A top view of the local structure;

[0018] Figure 5 For this utility model Figure 4 Enlarged view of point B.

[0019] In the figure: 1, sleeve; 2, expansion opening; 3, expansion tube; 4, anti-slip groove; 5, end cover; 6, expansion mechanism; 7, limiting mechanism; 61, guide rail; 62, guide groove; 63, ball; 64, fixed seat; 65, movable groove; 71, slot; 72, plug block; 73, spring; 74, guide rod; 75, guide seat. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1 , Figure 2 , Figure 4 A disposable minimally invasive dilation and drainage device for medical surgery includes a sleeve 1, the right end of the sleeve 1 is fixedly connected with an expansion port 2, the sleeve 1 is internally slidably sleeved with an expansion tube 3, the right end of the expansion tube 3 is provided with an anti-slip groove 4, the number of the anti-slip grooves 4 is multiple, and the multiple anti-slip grooves 4 are evenly distributed on the expansion tube 3, the right end of the expansion tube 3 is connected with an end cap 5 by threading, the sleeve 1 is provided with an expansion mechanism 6, and the expansion tube 3 is provided with a limiting mechanism 7.

[0022] See also Figure 1 , Figure 2 , Figure 3 The expansion mechanism 6 includes a guide rail 61. The inner wall of the sleeve 1 is fixedly connected to two symmetrically distributed guide rails 61. A guide groove 62 is provided inside the guide rail 61. A ball 63 is slidably connected inside the guide groove 62. A fixed seat 64 is movably sleeved on the outer side of the ball 63. A movable groove 65 is provided inside the fixed seat 64. The ball 63 is movably connected inside the movable groove 65. The ball 63 is rotated and slidable in the fixed seat 64 by designing the movable groove 65. The fixed seat 64 is connected to the expansion tube 3 through a bearing. By designing the expansion mechanism 6, it is convenient to adjust the expansion size of the sleeve 1.

[0023] See also Figure 1 , Figure 4 , Figure 5The limiting mechanism 7 includes a slot 71, an insert block 72, a spring 73, a guide rod 74, and a guide seat 75. A slot 71 is provided on the inner side wall of the sleeve 1. The insert block 72 is slidably sleeved inside the slot 71. There are multiple slots 71, and the multiple slots 71 are evenly distributed on the inner side wall of the sleeve 1. By designing the slot 71, the insert block 72 can be inserted into the slots 71 at different positions. A spring 73 is arranged inside the insert block 72. One end of the spring 73 is fixedly connected to the insert block 72, and the other end of the spring 73 is fixedly connected to the guide rod 74. By designing the spring 73, the action of the spring 73 can act on the insert block 72. The guide rod 74 is fixedly connected to the outer surface of the expansion tube 3. The outer side of the insert block 72 is slidably sleeved with a guide seat 75, and the guide seat 75 is fixedly connected to the expansion tube 3. By designing the limiting mechanism 7, the expansion tube 3 can be limited.

[0024] The specific implementation process of the utility model is as follows: during use, when the sleeve 1 needs to be expanded, the expansion tube 3 is moved horizontally, and the expansion tube 3 slides along the sleeve 1. At the same time, the expansion tube 3 drives the fixed seat 64 to move horizontally, and the fixed seat 64 drives the ball 63 to slide along the guide groove 62 opened in the guide rail 61. When the ball 63 slides along the inclined surface of the guide rail 61, it will give the guide rail 61 a pushing and squeezing force, which can realize the expansion of the sleeve 1. With the gradual movement of the ball 63, the sleeve 1 can be gradually expanded without pulling out and replacing the expansion tube 3 in the middle. When it is necessary to fix the expansion size of the sleeve 1, after the plug block 72 slides horizontally into the sleeve 1, the spring 73 is in a compressed state, the expansion tube 3 is rotated, the expansion tube 3 drives the guide seat 75 to rotate, and the guide seat 75 drives the plug block 72 to rotate. When the plug block 72 is rotated to the position of the slot 71, under the elastic action of the compressed spring 73, a reaction force will be given to the plug block 72, so that the plug block 72 will slide along the guide rod 74 and the guide seat 75, so that the plug block 72 is slid into the slot 71, the expansion tube 3 can be limited to prevent it from sliding relative to the sleeve 1, and the sleeve 1 can be restricted and fixed after expansion to prevent the expansion tube 3 from continuing to move and causing continuous expansion of the sleeve 1, thereby improving the stability of the sleeve 1 after expansion.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A disposable minimally invasive dilation and drainage device for medical surgery, comprising a cannula (1), characterized in that: The right end of the sleeve (1) is fixedly connected with an expansion opening (2), the interior of the sleeve (1) is slidably sleeved with an expansion tube (3), the right end of the expansion tube (3) is provided with an anti-slip groove (4), the number of the anti-slip grooves (4) is multiple, and the multiple anti-slip grooves (4) are evenly distributed on the expansion tube (3), the right end of the expansion tube (3) is connected with an end cover (5) through a thread, the interior of the sleeve (1) is provided with an expansion mechanism (6), and the expansion tube (3) is provided with a limiting mechanism (7).

2. A disposable minimally invasive dilation and drainage device for medical surgery according to claim 1, characterized in that: The expansion mechanism (6) comprises a guide rail (61). The inner wall of the sleeve (1) is fixedly connected to two symmetrically distributed guide rails (61), the guide rail (61) is provided with a guide groove (62) inside, a ball (63) is slidably connected inside the guide groove (62), and a fixed seat (64) is movably sleeved on the outer side of the ball (63), and the fixed seat (64) is connected to the expansion tube (3) through a bearing.

3. A disposable minimally invasive dilation and drainage device for medical surgery according to claim 2, characterized in that: A movable groove (65) is provided inside the fixing seat (64), and a ball (63) is movably connected inside the movable groove (65).

4. The disposable minimally invasive dilation and drainage device for medical surgery according to claim 1, characterized in that: The limiting mechanism (7) comprises a slot (71), an insert block (72), a spring (73), a guide rod (74), and a guide seat (75); the inner side wall of the sleeve (1) is provided with a slot (71); the insert block (72) is slidably sleeved inside the slot (71); the insert block (72) is provided with a spring (73); the insert block (72) is slidably sleeved inside the guide rod (74); the guide rod (74) is fixedly connected to the outer surface of the expansion tube (3); the outer side of the insert block (72) is slidably sleeved with the guide seat (75); the guide seat (75) is fixedly connected to the expansion tube (3).

5. A disposable minimally invasive dilation and drainage device for medical surgery according to claim 4, characterized in that: There are a plurality of slots (71), and the plurality of slots (71) are evenly distributed on the inner side wall of the sleeve (1).

6. A disposable minimally invasive dilation and drainage device for medical surgery according to claim 4, characterized in that: One end of the spring (73) is fixedly connected to the insert block (72), and the other end of the spring (73) is fixedly connected to the guide rod (74).

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