Pediatric surgical anal dilator

Abstract

To provide a pediatric surgical anal dilator that combines operational safety, user comfort, and clinical practicality. [Solution] The device has a fixed ring 1, a handheld frame 12 is fixedly connected to the outer wall of the fixed ring, multiple connection grooves are provided at the lower end of the fixed ring, a hinged connecting plate 3 is connected by a hinge in the connection groove, an expansion plate 11 is fixedly connected to the lower end of the hinged connecting plate, female screw threads are provided on the inner wall of the fixed ring, an expansion mechanism is provided above the fixed ring, and safety protection mechanisms are provided on the outside of the multiple expansion plates. Through the combination of the fixed ring, hinged expansion plate and screw-type adjustable expansion tube, stable and controllable circumferential expansion is achieved, the expansion force is made uniform and operation is made easy, and by combining a position limiting ring, anti-detachment ring, end protection shield and safety protection strip made of transparent silicone material, the gaps between the expansion plates are filled, and as a result, when the multiple expansion plates are narrowed and the device is removed, it is not possible to pinch flesh or damage mucous membranes. The entire device is made of transparent material and has an auxiliary observation hole, ensuring softness and comfort and conforming to the physiological structure of children, as well as providing a good field of view for examination.

Description

Technical Field

[0001] The present invention relates to the technical field of medical auxiliary devices, and particularly to an anal dilator for pediatric surgery.

Background Art

[0002] In the clinical practice of pediatric surgery, anal dilators are often applied in scenarios such as after congenital anal stenosis, congenital megacolon surgery, and anal-rectal surgery, as well as in pediatric anal-rectal examinations. They function to expand the narrowed area and assist in the inspection field of view.

[0003] Currently, most traditional pediatric anal dilators have an open-and-close rigid structure, and there are gaps between adjacent expansion parts. Therefore, it is easy to pinch the anal mucosal tissue during the expansion and removal process, which may cause damage, pain, and even bleeding. Moreover, such anal dilators are prone to slipping off during use because they lack an effective position-limiting and anti-slip structure.”

[0004] Therefore, the present invention proposes an anal dilator for pediatric surgery to solve the above problems.

Summary of the Invention

Problems to be Solved by the Invention

[0005] The purpose of the present invention is to provide an anal dilator for pediatric surgery to solve the problems raised in the above background art.

Means for Solving the Problems

[0006] To achieve the above object, the present invention provides the following technical means.

[0007] The pediatric surgical anal dilator has a fixing ring, a Z-shaped handle frame fixedly connected to the outer wall of the fixing ring, a plurality of connecting grooves arranged circumferentially at the lower end of the fixing ring, a hinged connecting plate connected by a hinge within the connecting groove, an expansion plate fixedly connected to the lower end of the hinged connecting plate, the expansion plate having a fan-shaped structure, female screw threads provided on the inner wall of the fixing ring, an expansion mechanism provided above the fixing ring, and safety protection mechanisms provided on the outside of the plurality of expansion plates. The expansion mechanism has an expansion tube, with male threads on the outer wall of the expansion tube, the lower end of the expansion tube extending into the fixing ring, the expansion tube being connected to the fixing ring via female and male threads, and an annular adjustment knob coaxially provided at the upper end of the expansion tube.

[0008] Preferably, the safety protection mechanism includes a position limiting ring, a fall prevention ring, and a safety strip installed between the end protection shield and the adjacent extension plate, wherein the left and right ends of the safety strip are fixedly connected to the adjacent side walls of two adjacent extension plates, the upper and lower ends of the multiple safety strips are fixedly connected to the adjacent sides of the position limiting ring and the end protection shield, the lower end of the extension plate is fixedly connected to the inner wall of the end protection shield, and the fall prevention ring is fitted and fixed to the outer wall of the end protection shield.

[0009] Preferably, the fixing ring, the anti-detachment ring, the end protective shield, and the safety protective strip are all made of transparent silicone material.

[0010] Preferably, the anti-detachment ring has a hollow structure.

[0011] Preferably, the side wall of the expansion tube is provided with a plurality of auxiliary observation holes, and both the expansion tube and the expansion plate are made of transparent material.

[0012] Preferably, each of the multiple extension plates has an arc-shaped structure, and the intermediate portion of each extension plate is curved toward the central axis direction of the fixing ring. [Effects of the Invention]

[0013] The pediatric surgical anal dilator according to this invention has the following beneficial effects compared to the current technology. 1. The pediatric surgical anal dilator according to this invention achieves stable and controllable circumferential dilation through a combination of a fixing ring, a hinged dilation plate, and a screw-type adjustable dilation tube, ensuring uniform dilation force and ease of operation. By combining a position limiting ring, an anti-detachment ring, an end protective shield, and a safety strip made of transparent silicone material, the gaps between the dilation plates are filled, thereby preventing pinching of flesh or injury to the mucous membrane when removing the device by narrowing the multiple dilation plates.

[0014] 2. The pediatric surgical anal dilator according to this invention achieves thorough restriction and slippage prevention through positional restriction and a hollow anti-slip structure, thereby improving safety of use; by making the entire device out of transparent material and providing an auxiliary observation hole, it ensures softness and comfort, conforms to the physiological structure of children, and provides a good field of view for examination, combining safety of operation, comfort of use, and clinical practicality. [Brief explanation of the drawing]

[0015] [Figure 1] Figure 1 is a schematic diagram showing the three-dimensional structure of the present invention. [Figure 2] Figure 2 is a schematic diagram showing the three-dimensional structure of the extension plate of the present invention. [Figure 3] Figure 3 is a schematic diagram showing the three-dimensional structure of the safety protection strip of the present invention. [Figure 4] Figure 4 is a schematic diagram showing the three-dimensional cross-sectional structure of the position limiting ring of the present invention. [Figure 5] Figure 5 is a schematic diagram showing an enlarged view of the structure of portion A in Figure 4 of the present invention. [Figure 6] Figure 6 is a schematic diagram showing the three-dimensional structure of the expansion tube of the present invention. [Modes for carrying out the invention]

[0016] Next, we will clearly and completely describe the technical means in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative labor are included in the protection scope of the present invention.

[0017] As shown in FIGS. 1-6, the pediatric surgical anal dilator according to this embodiment has a fixed ring 1. A Z-shaped hand-held frame 12 is fixedly connected to the outer wall of the fixed ring 1. A plurality of connecting grooves 2 arranged in a circumferential manner are provided at the lower end of the fixed ring 1. A hinge connecting plate 3 is connected to the connecting groove 2 by a hinge. An expansion plate 11 is fixedly connected to the lower end of the hinge connecting plate 3. The expansion plate 11 has a fan-shaped structure. A female thread is provided on the inner wall of the fixed ring 1. An expansion mechanism is provided above the fixed ring 1. A safety protection mechanism is provided outside the plurality of expansion plates 11.

[0018] The expansion mechanism has an expansion tube 8. A male thread is provided on the outer wall of the expansion tube 8. The lower end of the expansion tube 8 extends into the fixed ring 1. The expansion tube 8 is connected to the fixed ring 1 through the female thread and the male thread. An annular adjustment knob 9 is coaxially provided at the upper end of the expansion tube 8.

[0019] The safety protection mechanism includes a position limiting ring 7, a dropout prevention ring 6, an end protection shield 5, and a safety protection strip 4 installed between the adjacent expansion plates 11. The left and right ends of the safety protection strip 4 are fixedly connected to the adjacent side walls of the two adjacent expansion plates 11 respectively. The upper and lower ends of the plurality of safety protection strips 4 are fixedly connected to the adjacent sides of the position limiting ring 7 and the end protection shield 5 respectively. The lower end of the expansion plate 11 is fixedly connected to the inner wall of the end protection shield 5. The dropout prevention ring 6 is fitted and fixed to the outer wall of the end protection shield 5. The safety protection mechanism is such that when the adjustment knob 9 is rotated in the reverse direction after the inspection, as the expansion tube 8 moves towards the end away from the expansion plate 11, it prevents pinching of the flesh or damage to the mucosa during the process of gradually narrowing the lower ends of the plurality of expansion plates 11.

[0020] The fixed ring 1, the dropout prevention ring 6, the end protection shield 5, and the safety protection strip 4 are all made of a transparent silicone material.

[0021] A plurality of auxiliary observation holes 10 are provided on the side wall of the expansion tube 8, and the expansion tube 8 and the expansion plate 11 are made of a transparent material. The expansion plate 11 made of a transparent material, the expansion tube 8, and the safety protection strip 4 made of a transparent silicone material, combined with the structural design of the auxiliary observation holes 10, provide medical staff with a good inspection view.

[0022] All the plurality of expansion plates 11 have an arc-shaped structure, and the middle part of the expansion plate 11 bends toward the central axis direction of the fixing ring 1. The anti-drop ring 6 has a hollow structure. The structural design of the arc-shaped expansion plate 11 and the hollow anti-drop ring 6 prevents slippage from occurring during use.

[0023] The working principle of the present invention is as follows.

[0024] Before use, the lower end of the expansion tube 8 is located within the fixing ring 1, and under the action of the safety protection strip 4, the plurality of expansion plates 11 are compressed. During the inspection, the medical staff holds the hand-held frame 12, applies a lubricant to the outer wall of the dilator, and inserts one end of the end protection shield 5 into the anus. After insertion, when the adjustment knob 9 is rotated, the expansion tube 8 is pushed forward in the direction of the expansion plate 11 through the meshing of the female thread and the male thread. As the expansion tube 8 moves, the plurality of expansion plates 11 are expanded, thereby achieving an expansion operation on the patient's anus. The expansion plate 11 designed with an arc-shaped structure and the anti-drop ring 6 designed with a hollow structure make it difficult for the dilator to slide off after the anal expansion. In addition, the expansion plate 11 made of a transparent material, the expansion tube 8, and the safety protection strip 4 made of a transparent silicone material, combined with the structural design of the auxiliary observation holes 10, provide medical staff with a good inspection view. After the inspection is completed, when the adjustment knob 9 is rotated in the reverse direction, as the expansion tube 8 moves to the end away from the expansion plate 11, the lower ends of the plurality of expansion plates 11 are gradually compressed. When the lower end of the expansion tube 8 moves into the fixing ring 1, the plurality of expansion plates 11 are completely compressed. At this time, the dilator can be removed. The safety protection mechanism prevents pinching of the flesh or damage to the mucosa during the process of compressing the lower ends of the plurality of expansion plates 11.

[0025] Although embodiments of the present invention have already been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of protection of the present invention is defined by the claims and their equivalents. [Explanation of Symbols]

[0026] 1- Fixing ring; 2- Connecting groove; 3- Hinge connecting plate; 4- Safety protective strip; 5- End protective shield; 6- Anti-detachment ring; 7- Position limiting ring; 8- Expansion tube; 9- Adjustment knob; 10- Auxiliary observation hole; 11- Expansion plate; 12- Handheld frame

Claims

1. A pediatric surgical anal dilator having a fixed ring (1), wherein a Z-shaped handle frame (12) is fixedly connected to the outer wall of the fixed ring (1), a plurality of connection grooves (2) are provided at the lower end of the fixed ring (1) arranged in a circular pattern, a hinged connecting plate (3) is connected to the connection grooves (2) by a hinge, an expansion plate (11) is fixedly connected to the lower end of the hinged connecting plate (3), the expansion plate (11) has a fan-shaped structure, female screw threads are provided on the inner wall of the fixed ring (1), an expansion mechanism is provided above the fixed ring (1), and a safety protection mechanism is provided on the outside of the plurality of expansion plates (11). The expansion mechanism has an expansion tube (8), the outer wall of the expansion tube (8) has male threads, the lower end of the expansion tube (8) extends into the fixing ring (1), the expansion tube (8) is connected to the fixing ring (1) via female and male threads, and an annular adjustment knob (9) is coaxially provided at the upper end of the expansion tube (8). A pediatric surgical anal dilator characterized by the following features.

2. The safety protection mechanism includes a position-limiting ring (7), a fall-prevention ring (6), and a safety strip (4) installed between the end protection shield (5) and the adjacent extension plate (11), wherein the left and right ends of the safety strip (4) are fixedly connected to the adjacent side walls of two adjacent extension plates (11), the upper and lower ends of the multiple safety strips (4) are fixedly connected to the adjacent sides of the position-limiting ring (7) and the end protection shield (5), the lower end of the extension plate (11) is fixedly connected to the inner wall of the end protection shield (5), and the fall-prevention ring (6) is fitted and fixed to the outer wall of the end protection shield (5). The pediatric surgical anal dilator according to feature 1.

3. The fixing ring (1), the anti-detachment ring (6), the end protective shield (5), and the safety protective strip (4) are all made of transparent silicone material. The pediatric surgical anal dilator according to feature 2.

4. The pediatric surgical anal dilator according to claim 2, characterized in that the anti-detachment ring (6) has a hollow structure.

5. Multiple auxiliary observation holes (10) are provided in the side wall of the expansion tube (8), and both the expansion tube (8) and the expansion plate (11) are made of transparent material. The pediatric surgical anal dilator according to feature 1.

6. Each of the multiple extension plates (11) has an arc-shaped structure, and the middle portion of each extension plate (11) is curved toward the central axis direction of the fixing ring (1). The pediatric surgical anal dilator according to feature 1.

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