A guided urethral protection and dilation device

Abstract

The invention discloses a guided urethra protection and expansion device, which belongs to the technical field of medical auxiliary equipment. A guided urethra protection and expansion device comprises an expansion structure sleeved on the front end of a urethroscope body for guiding the urethroscope body to enter the urethra; the expansion structure and the urethroscope body are detachably connected, and the expansion structure can slide forward and backward along the axial direction of the urethroscope body; a deformation structure is provided on the expansion structure, and the deformation structure can be deformed after being squeezed by the outside to fix the expansion structure at the urethral opening; a limiting structure is provided between the expansion structure and the urethroscope body, and the limiting structure is used to control the relative sliding between the expansion structure and the urethroscope body, which can provide a guiding effect for the insertion of the urethroscope body into the urethra, and it is not easy to cause the problem of mucosal damage caused by repeated friction of the urethra, reduce the pain of the patient, make the patient easy to recover after surgery, and improve the efficiency of the operation.

Description

Technical Field

[0001] The present invention relates to the technical field of medical auxiliary equipment, and more specifically, to a guided urethra protection and expansion device. Background Art

[0002] Urethrascopes are widely used in the medical field. When a patient has an acute disease and cannot urinate or needs to have a urethra catheterized, a urethrascope is often needed to observe the urethra structure and perform other operations such as catheterization.

[0003] Clinically, urethral stenosis requires repeated urethral dilation. Currently, metal dilators are used, which need to be blindly dilated at least three times from small to large in and out of the urethra. The repeated entry and exit of the urethra can easily cause damage to the urethral mucosa. In severe cases, complications such as false passage and urethral bleeding may occur, which increases the patient's pain and the difficulty of postoperative recovery. The operation is also time-consuming, which increases the time required for the operation. Summary of the invention

[0004] 1. Technical issues to be solved

[0005] In view of the problems existing in the prior art, the purpose of the present invention is to provide a guided urethral protection and dilation device, which can provide guidance for the insertion of the urethroscope body into the urethra, is less likely to cause mucosal damage due to repeated friction of the urethra, reduces the patient's pain, makes it easier for the patient to recover after surgery, and improves the efficiency of the operation.

[0006] 2. Technical solution

[0007] To solve the above problems, the present invention adopts the following technical solutions.

[0008] A guided urethra protection and expansion device comprises an expansion structure sleeved on the front end of a urethroscope body and used for guiding the urethroscope body into the urethra;

[0009] The expansion structure is detachably connected to the urethroscope body, and the expansion structure can slide forward and backward along the axis direction of the urethroscope body;

[0010] A deformation structure is provided on the expansion structure, and the deformation structure can be deformed after being squeezed by the outside world to fix the expansion structure at the urethral opening;

[0011] A limiting structure is provided between the expansion structure and the urethroscope body, and the limiting structure is used to control the relative sliding between the expansion structure and the urethroscope body.

[0012] Furthermore, the expansion structure includes two connecting parts and two guiding parts; the two connecting parts are detachably connected, and after the two connecting parts are connected, a tubular structure is formed and sleeved outside the urethroscope body; the guiding part is rotatably connected to the front end of the connecting part, and the ends of the two guiding parts that are close to each other are in contact to form a hollow frustum structure; the rotational connection point between the guiding part and the connecting part is the rear end center part of the guiding part.

[0013] Furthermore, the deformation structure includes a pressing hole, a mounting hole, a circulation cavity, a first elastic soft film and a second elastic soft film; the circulation cavity is opened inside the connecting part, and the circulation cavity is filled with air; the mounting hole is opened on the outer surface of the connecting part close to the front end, the number of the mounting holes is a group, the number of the mounting holes in each group is at least two, and they are symmetrical about the axis of the urethroscope body; the pressing hole is opened on the outer surface of the connecting part close to the rear end; the mounting hole and the pressing hole are both connected to the circulation cavity; the first elastic soft film is fixedly arranged in the mounting hole; the second elastic soft film is fixedly arranged in the pressing hole.

[0014] Furthermore, the number of mounting holes is two groups, and the distance between the two groups of mounting holes does not exceed .cm.

[0015] Furthermore, a marking line is provided on the surface of the connecting portion.

[0016] Furthermore, an elastic connecting portion is fixedly provided between the inner surface of the guiding portion and the front end of the connecting portion, and the elastic connecting portion is used to limit the rotation angle of the guiding portion relative to the connecting portion.

[0017] Furthermore, the surface of the guide portion is coated with a flexible protective layer.

[0018] Furthermore, the limiting structure includes a limiting sliding part and a limiting sliding groove; the limiting sliding part is fixedly arranged on the inner wall of the connecting part close to the front end; the limiting sliding groove is arranged on the outer surface of the urethroscope body, and the limiting sliding part slides in the limiting sliding groove.

[0019] Furthermore, the limiting slide groove is a "7"-shaped structure.

[0020] 3. Beneficial effects

[0021] Compared with the prior art, the advantages of the present invention are:

[0022] (I) This solution can provide guidance for the insertion of the urethroscope into the urethra, making it less likely for the mucosal damage caused by repeated friction of the urethra to occur, reducing the patient's pain, making it easier for the patient to recover after surgery, and improving the efficiency of the operation.

[0023] (ii) By setting the deformation structure, the fixed state between the expansion structure and the urethral opening can be achieved with a simple structure and a simple operation method, so that the expansion structure is not easy to enter the urethra too deeply and is not easy to slip out of the urethra.

[0024] (iii) The "7"-shaped design of the limiting slide groove enables the expansion structure to make a short-distance circumferential rotation relative to the urethroscope body and to make an axial movement relative to the urethroscope body.

[0025] (iv) The setting of the marking line facilitates the operator to understand the depth of the expansion structure entering the patient's urethra. On the one hand, it is not easy for the expansion structure to enter too deeply and cause damage to the patient. On the other hand, it is convenient for the operator to press the second elastic soft film at the appropriate time.

[0026] (V) The setting of the elastic connecting part makes it difficult for the guiding part to rotate too much relative to the connecting part and fail to return to its original position, and at the same time, the guiding part is also difficult to be unable to withdraw from the urethra due to rotating too much. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the three-dimensional structure of embodiment 2 of the present invention;

[0028] Figure 2 It is a schematic diagram of the three-dimensional structure of the expansion structure part of Example 2 of the present invention;

[0029] Figure 3 It is a schematic diagram of the three-dimensional structure of the connecting portion of Example 2 of the present invention;

[0030] Figure 4 It is a schematic cross-sectional structure diagram of embodiment 2 of the present invention;

[0031] Figure 5 This is a structural schematic diagram of the first elastic film deforming after the second elastic film is pressed down according to Embodiment 2 of the present invention;

[0032] Figure 6 It is a structural schematic diagram of the urethroscope body of Example 2 of the present invention, in which the guide portion is driven to open a certain angle when the urethroscope body is pushed forward;

[0033] Figure 7 It is a structural schematic diagram of a urethroscope body and a limiting slide groove part according to Example 2 of the present invention;

[0034] Figure 8 This is a schematic diagram of the structure of Example 3 of the present invention.

[0035] Description of the numbers in the figure:

[0036] 1Urethrascope body;

[0037] 2 expansion structure, 2-1 connection part, 2-1-1 pressing hole, 2-1-2 mounting hole, 2-1-3 flow cavity, 2-1-4 first elastic film, 2-1-5 second elastic film, 2-2 guide part;

[0038] 3-1 limiting sliding part, 3-2 limiting sliding groove;

[0039] 4 Elastic connection parts. DETAILED DESCRIPTION

[0040] Embodiment 1:

[0041] A guided urethra protection and expansion device, comprising an expansion structure 2 which is sleeved on the front end of a urethroscope body 1 and is used to guide the urethroscope body 1 into the urethra; the expansion structure 2 is detachably connected to the urethroscope body 1, and the expansion structure 2 can slide back and forth along the axial direction of the urethroscope body 1.

[0042] The expansion structure 2 includes two connecting parts 2-1 and two guiding parts 2-2; the two connecting parts 2-1 are detachably connected and snap-fitted to each other. When the expansion structure 2 assists the urethroscope body 1 to enter the urethra, the snap-fitting effect between the two connecting parts 2-1 facilitates the expansion structure 2 to be removed from the urethroscope body 1, and does not easily hinder the subsequent inspection work of the urethroscope body 1. After the two connecting parts 2-1 are connected, a tubular structure is formed to be sleeved outside the urethroscope body 1; the guiding part 2-2 is rotatably connected to the front end of the connecting part 2-1, and the ends of the two guiding parts 2-2 that are close to each other are in contact to form a hollow truncated cone structure; the rotation connection point between the guiding part 2-2 and the connecting part 2-1 is the rear end center of the guiding part 2-2.

[0043] The expansion structure 2 is provided with a deformation structure, which can be deformed by external compression to fix the expansion structure 2 at the urethral opening; the deformation structure includes a pressing hole 2-1-1, a mounting hole 2-1-2, a flow cavity 2-1-3, a first elastic soft film 2-1-4 and a second elastic soft film 2-1-5; the flow cavity 2-1-3 is opened inside the connecting part 2-1, and the flow cavity 2-1-3 is filled with air; the mounting holes 2-1-2 are opened on the outer surface of the connecting part 2-1 near the front end, the number of the mounting holes 2-1-2 is a group, the number of each group of mounting holes 2-1-2 is at least two, and they are symmetrical about the axis of the urethroscope body 1; the pressing hole 2-1-1 is opened On the outer surface of the connecting portion 2-1 near the rear end; the mounting hole 2-1-2 and the pressing hole 2-1-1 are both connected to the circulation cavity 2-1-3; the first elastic soft film 2-1-4 is fixedly arranged in the mounting hole 2-1-2; the second elastic soft film 2-1-5 is fixedly arranged in the pressing hole 2-1-1. When the first elastic soft film 2-1-4 follows the connecting portion 2-1 and the guiding portion 2-2 into the urethra, the pressure in the circulation cavity 2-1-3 is increased by pressing the second elastic soft film 2-1-5, and the air flows toward the direction of the first elastic soft film 2-1-4 to stretch the first elastic soft film 2-1-4, and the first elastic soft film 2-1-4 forms a surface of the connecting portion 2-1 as shown in the figure. Figure 5The convex shape shown is blocked in the urethra near the urethral opening, and the guide part 2-2 is not likely to slip out of the urethra due to operator's misoperation during subsequent operations, thereby reducing repeated friction damage to the urethral mucosa.

[0044] The surface of the connecting portion 2-1 is provided with an identification line, which facilitates the operator to understand the depth of the expansion structure 2 entering the patient's urethra. On the one hand, it is not easy for the expansion structure 2 to enter too deeply and cause damage to the patient. On the other hand, it is convenient for the operator to press the second elastic film 2-1-5 at the appropriate time.

[0045] The surface of the guide part 2 - 2 is covered with a flexible protective layer, so that the guide part 2 - 2 is not likely to cause damage to the patient during the process of extending into the urethra.

[0046] A limiting structure is provided between the expansion structure 2 and the urethroscope body 1, and the limiting structure is used to control the relative sliding between the expansion structure 2 and the urethroscope body 1; the limiting structure includes a limiting sliding portion 3-1 and a limiting sliding groove 3-2; the limiting sliding portion 3-1 is fixedly arranged on the inner wall of the connecting portion 2-1 near the front end; the limiting sliding groove 3-2 is opened on the outer surface of the urethroscope body 1, and the limiting sliding portion 3-1 slides in the limiting sliding groove 3-2.

[0047] The limiting slide groove 3-2 is a "7"-shaped structure. This special shape allows the expansion structure 2 and the urethroscope body 1 to be pushed forward together in the initial state. After being pushed to the appropriate position, only the urethroscope body 1 is pushed forward and the expansion structure 2 stops moving.

[0048] During use, the operator holds the urethroscope body 1 and inserts it toward the patient's urethra. During the insertion of the urethroscope body 1, the guide part 2-2 moves forward with the forward pushing operation of the urethroscope body 1 and gradually stretches the urethral opening. When the mounting hole 2-1-2 moves to just pass through the urethral opening, the operator holds the second elastic soft film 2-1-5 on the connecting part 2-1 and squeezes the second elastic soft film 2-1-5 with force. The pressure in the flow cavity 2-1-3 increases, and the air flows toward the direction of the first elastic soft film 2-1-4. The first elastic soft film 2-1-4 is stretched open. At this time, the operator keeps pressing the second elastic soft film 2-1-5 and rotates the urethroscope body 1 counterclockwise with the other hand. The limiting sliding part 3-1 moves circumferentially for a short distance in the limiting sliding groove 3-2. When the urethroscope body 1 rotates to the maximum limit state, the urethroscope body 1 is pushed forward again. The urethroscope body 1 is pushed forward to move the limiting sliding part 3-1 axially in the limiting sliding groove 3-2. When the urethroscope body 1 moves forward to approach the guiding part 2-2, it continues to move, driving the guiding part 2-2 to move around the connecting part 2-1 in the direction away from the urethroscope body 1 until the distance between the front ends of the two guiding parts 2-2 is greater than the diameter of the front end of the urethroscope body 1. The urethroscope body 1 is pushed forward to the required depth, and then the squeezing force on the second elastic film 2-1-5 is released. The first elastic film 2-1-4 and the second elastic film 2-1-5 return to their original state. At this time, the operator holds the expansion structure 2 and slides the expansion structure 2 backward along the urethroscope body 1 until the guiding part 2-2 completely leaves the urethra. The expansion structure 2 can be removed from the urethroscope body 1 by releasing the clamping effect between the two guiding parts 2-2, and the urethroscope body 1 continues to perform the inspection work.

[0049] Embodiment 2:

[0050] See also Figure 1-7 There are two groups of mounting holes 2-1-2, and the distance between the two groups of mounting holes 2-1-2 does not exceed 1.5 cm. Through the setting of the two groups of mounting holes 2-1-2, when the second elastic soft film 2-1-5 is squeezed to cause the first elastic soft film 2-1-4 to deform and bulge, one group of the first elastic soft films 2-1-4 is located in the urethra, and the other group of the first elastic soft films 2-1-4 is located outside the urethra, which can better fix the expansion structure 2 near the urethral opening, and it is not easy for the expansion structure 2 to enter the urethra too deeply due to misoperation, or the expansion structure 2 that enters the urethra to slip out of the urethra due to misoperation.

[0051] Embodiment 3:

[0052] See also Figure 8An elastic connecting portion 4 is fixedly provided between the inner surface of the guiding portion 2-2 and the front end of the connecting portion 2-1. The elastic connecting portion 4 may be an elastic connecting belt. The elastic connecting portion 4 is used to limit the rotation angle of the guiding portion 2-2 relative to the connecting portion 2-1. By setting the elastic connecting portion 4, when the urethroscope body 1 is pushed forward to gradually push apart the two guiding portions 2-2 that are close to each other, under the elastic force of the elastic connecting portion 4, the guiding portion 2-2 is not easy to rotate around the connecting portion 2-1 at an excessive angle and cannot return to its original position, or the distance between the two guiding portions 2-2 is too large due to the rotation at an excessive angle, and the expansion structure 2 cannot be withdrawn from the outside of the urethra.

Claims

1. A guided urethral protection and dilation device, characterized in that: It comprises an expansion structure (2) sleeved on the front end of the urethroscope body (1) and used for guiding the urethroscope body (1) into the urethra; The expansion structure (2) and the urethroscope body (1) are detachably connected, and the expansion structure (2) can slide forward and backward along the axis direction of the urethroscope body (1); A deformable structure is provided on the expansion structure (2), and the deformable structure can be deformed after being squeezed by the outside world to fix the expansion structure (2) at the urethral opening; A limiting structure is provided between the expansion structure (2) and the urethroscope body (1), and the limiting structure is used to control the relative sliding between the expansion structure (2) and the urethroscope body (1); The expansion structure (2) comprises two connecting parts (2-1) and two guiding parts (2-2); The two connecting parts (2-1) are detachably connected, and after the two connecting parts (2-1) are connected, a tubular structure is formed to be sleeved outside the urethroscope body (1); The guide part (2-2) is rotatably connected to the front end of the connecting part (2-1), and the ends of the two guide parts (2-2) that are close to each other are in contact to form a hollow truncated cone structure; the rotation connection point between the guide part (2-2) and the connecting part (2-1) is the rear end center of the guide part (2-2); The deformation structure comprises a pressing hole (2-1-1), a mounting hole (2-1-2), a flow cavity (2-1-3), a first elastic soft film (2-1-4) and a second elastic soft film (2-1-5); The circulation cavity (2-1-3) is opened inside the connecting portion (2-1), and the circulation cavity (2-1-3) is filled with air; The mounting holes (2-1-2) are formed on the outer surface of the connecting portion (2-1) close to the front end, the mounting holes (2-1-2) are arranged in a group, the number of mounting holes (2-1-2) in each group is at least two, and the mounting holes (2-1-2) are symmetrical about the axis of the urethrascope body (1); The pressing hole (2-1-1) is provided on the outer surface of the connecting portion (2-1) close to the rear end; The mounting hole (2-1-2) and the pressing hole (2-1-1) are both connected to the flow cavity (2-1-3); The first elastic soft sheet (2-1-4) is fixedly arranged in the mounting hole (2-1-2); The second elastic soft sheet (2-1-5) is fixedly arranged in the pressing hole (2-1-1).

2. A guided urethral protection and dilation device according to claim 1, characterized in that: The number of the mounting holes (2-1-2) is two groups, and the distance between the two groups of mounting holes (2-1-2) does not exceed 1.5 cm.

3. The guided urethra protection and dilation device according to claim 1, characterized in that: A marking line is provided on the surface of the connecting portion (2-1).

4. The guided urethra protection and dilation device according to claim 1, characterized in that: An elastic connecting portion (4) is fixedly provided between the inner surface of the guiding portion (2-2) and the front end of the connecting portion (2-1), and the elastic connecting portion (4) is used to limit the rotation angle of the guiding portion (2-2) relative to the connecting portion (2-1).

5. The guided urethra protection and dilation device according to claim 1, characterized in that: The surface of the guide part (2-2) is covered with a flexible protective layer.

6. The guided urethra protection and dilation device according to claim 1, characterized in that: The limiting structure comprises a limiting sliding portion (3-1) and a limiting sliding groove (3-2); The limiting sliding portion (3-1) is fixedly arranged on the inner wall of the connecting portion (2-1) close to the front end; The limiting sliding groove (3-2) is provided on the outer surface of the urethroscope body (1), and the limiting sliding part (3-1) slides in the limiting sliding groove (3-2).

7. A guided urethra protection and dilation device according to claim 6, characterized in that: The limiting slide groove (3-2) is a "7"-shaped structure.

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