An adjustable anal dilator for an anorectal anastomat

Abstract

The utility model relates to medical tool technical field, concretely is a kind of adjustable dilator for anorectal anastomat, including dilator and the plug-in inner core of sleeve joint in the inside of dilator, the outer wall of dilator is sleeved with adjusting seat, the inner wall of adjusting seat is fixedly connected with connecting ring, the left side of connecting ring is fixedly connected with connecting ring, the left side of dilator is equipped with annular thread groove, and the inside thread connection of annular thread groove has the outer thread cylinder fixedly connected with connecting ring;When rotating connecting ring, adjusting seat can move left and right, and the spacing between adjusting seat and the right end of dilator is determined according to the depth of patient's hemorrhoid lesion, and then in use, the insertion end of dilator is just located at the hemorrhoid lesion of patient, immediately plug-in inner core is pulled out by push-pull rod, and the hemorrhoid to be ringed is entered into the inside of dilator, and then reach the purpose of being suitable for different hemorrhoid lesion depth patients by being convenient for the position of adjusting seat to be adjusted.

Description

Technical Field

[0001] This utility model relates to the field of medical tool technology, specifically to an adjustable anal dilator for anorectal anastomosis. Background Technology

[0002] Stapled hemorrhoidectomy is suitable for all types of hemorrhoids, especially for patients with severe internal hemorrhoids and partial rectal mucosal prolapse. Its principle is to preserve the anal cushions and simultaneously perform a circumferential resection and anastomosis of part of the internal hemorrhoids, the hemorrhoidal mucosa, and the submucosal tissue. This instantaneous anastomosis not only blocks the blood supply to the hemorrhoids but also suspends and fixes the prolapsed tissue, restoring the pathological anal canal and rectum to a normal anatomical state. When performing circumferential resection of hemorrhoids using an anorectal stapler, it is necessary to first dilate the anus using an anal dilator.

[0003] In existing technologies, adjustable anal dilators used in anorectal staplers generally consist of a dilator tube, an end seat integrally formed with one end of the dilator tube, and an insertion / extraction core. However, since the dilator tube and the end seat are integrally formed, the position of the end seat cannot be adjusted. Furthermore, the depth of hemorrhoids mainly refers to the distance between the hemorrhoid lesion and the anal margin, which varies depending on the type of hemorrhoids and individual differences. Therefore, when dealing with patients with hemorrhoid lesions of different depths, it cannot be guaranteed that the insertion end of the dilator tube is precisely located at the position of the hemorrhoid lesion. Thus, it is necessary to propose an adjustable anal dilator for anorectal staplers to solve the aforementioned problems. Utility Model Content

[0004] The purpose of this invention is to provide an adjustable anal dilator for anorectal anastomosis, which is characterized by easy adjustment of the position of the adjustment seat to suit patients with different depths of hemorrhoid lesions.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an adjustable anal dilator for anorectal anastomosis, comprising an anal dilator cylinder and an insertable inner core sleeved inside the anal dilator cylinder, an adjustment seat sleeved on the outer wall of the anal dilator cylinder, a connecting ring fixedly connected to the inner wall of the adjustment seat, a connecting ring fixedly connected to the left side of the connecting ring, an annular threaded groove opened on the left side of the anal dilator cylinder, an external threaded cylinder fixedly connected to the connecting ring being threaded inside the annular threaded groove, and a push-pull rod passing through the inside of the connecting ring being fixedly connected to the left end of the insertable inner core.

[0006] In order to position the insertion of the insert core, in a preferred embodiment of the adjustable anal dilator for anorectal staplers of this invention, a connecting plate is fixedly connected to the outer wall of the push-pull rod, and four positioning rods are fixedly connected to the right side of the connecting plate.

[0007] To prevent the adjusting seat from detaching from the outer wall of the anal dilator, as a preferred embodiment of the adjustable anal dilator for anorectal anastomosis according to this utility model, the outer wall of the anal dilator is fixedly connected with a limiting ring.

[0008] To facilitate the protection of the patient's body, in a preferred embodiment of the adjustable anal dilator for anorectal anastomosis according to this utility model, one corner on the right side of the dilator tube is rounded.

[0009] To facilitate the pushing and pulling operation of the push-pull rod, in a preferred embodiment of the adjustable anal dilator for anorectal anastomosis according to this utility model, a push-pull handle is provided on the left side of the push-pull rod.

[0010] To facilitate the insertion and removal of the inner core through the interior of the connecting ring, in a preferred embodiment of the adjustable anal dilator for anorectal anastomosis according to this invention, the inner diameter of the connecting ring is larger than the inner diameter of the anal dilator tube.

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

[0012] When the connecting ring is rotated, the adjusting seat can move left and right. The distance between the adjusting seat and the right end of the dilator is determined according to the depth of the patient's hemorrhoid lesions. When using it, the insert core needs to be inserted into the inside of the dilator, and then the dilator together with the insert core is inserted into the patient's anus until the adjusting seat is in close contact with the patient's body. At this time, the insertion end of the dilator is exactly located at the patient's hemorrhoid lesion. Then, the insert core is pulled out by pushing and pulling the lever, and the hemorrhoid to be circumcised will enter the inside of the dilator, which facilitates the subsequent circumcision surgery through the anorectal stapler. This allows for easy adjustment of the position of the adjusting seat to suit patients with different depths of hemorrhoid lesions. Attached Figure Description

[0013] Figure 1 This is a front sectional view of the present invention.

[0014] Figure 2 This is a connection structure diagram of the adjustment seat of this utility model;

[0015] Figure 3 This is a structural diagram of the push-pull rod connection of this utility model.

[0016] In the diagram: 1. Anal dilator; 2. Insertion / removal inner core; 3. Adjustment seat; 4. Connecting ring; 5. Annular threaded groove; 6. External threaded cylinder; 7. Connecting ring; 8. Connecting disc; 9. Positioning rod; 10. Push-pull handle; 11. Push-pull rod; 12. Restriction ring. Detailed Implementation

[0017] Please see Figures 1 to 3An adjustable anal dilator for anorectal anastomosis includes an anal dilator cylinder 1 and an insertable inner core 2 fitted inside the anal dilator cylinder 1. An adjustment seat 3 is fitted onto the outer wall of the anal dilator cylinder 1. A connecting ring 4 is fixedly connected to the inner wall of the adjustment seat 3. A connecting ring 7 is fixedly connected to the left side of the connecting ring 4. An annular threaded groove 5 is opened on the left side of the anal dilator cylinder 1. An external threaded cylinder 6 fixedly connected to the connecting ring 7 is threaded inside the annular threaded groove 5. A push-pull rod 11 passing through the inside of the connecting ring 7 is fixedly connected to the left end of the insertable inner core 2.

[0018] In this embodiment: by rotating the connecting ring 4, the connecting ring 7 and the external threaded cylinder 6 can be rotated. Since the external threaded cylinder 6 is threadedly connected to the inner wall of the annular threaded groove 5, the external threaded cylinder 6, the connecting ring 7, the connecting ring 4, and the adjusting seat 3 can move left and right. The distance between the adjusting seat 3 and the right end of the dilator cylinder 1 is determined according to the depth of the patient's hemorrhoid lesion. Therefore, in use, the insert core 2 needs to be inserted into the inside of the dilator cylinder 1, and then the dilator cylinder 1 together with the insert core 2 is inserted into the patient's anus. During this process, the position of the insert core 2 remains unchanged until the adjusting seat 3 is in close contact with the patient's body. At this time, the insertion end of the dilator cylinder 1 is exactly located at the patient's hemorrhoid lesion. Then, the insert core 2 is pulled out by the push-pull rod 11, and the hemorrhoid to be circumcised will enter the inside of the dilator cylinder 1, which facilitates the subsequent circumcision surgery through the anorectal stapler. In this way, the position of the adjusting seat 3 can be easily adjusted to suit patients with different depths of hemorrhoid lesions.

[0019] As a technical optimization of this utility model, a connecting plate 8 is fixedly connected to the outer wall of the push-pull rod 11, and four positioning rods 9 are fixedly connected to the right side of the connecting plate 8.

[0020] In this embodiment: by setting a connecting plate 8 and four positioning rods 9, the insertion position of the insertable inner core 2 can be positioned when the four positioning rods 9 abut against the connecting ring 7.

[0021] As a technical optimization of this utility model, a limiting ring 12 is fixedly connected to the outer wall of the anal tube 1.

[0022] In this embodiment, a limiting ring 12 is provided to prevent the adjusting seat 3 from detaching from the outer wall of the anal dilator 1.

[0023] As a technical optimization of this utility model, a corner on the right side of the anal dilator 1 is rounded.

[0024] In this embodiment, rounded corners are provided to protect the patient's body.

[0025] As a technical optimization of this utility model, a push-pull handle 10 is provided on the left side of the push-pull rod 11.

[0026] In this embodiment, a push-pull handle 10 is provided to facilitate the push-pull operation of the push-pull rod 11.

[0027] As a technical optimization of this utility model, the inner diameter of the connecting ring 7 is larger than the inner diameter of the anal dilator 1.

[0028] In this embodiment, by making the inner diameter of the connecting ring 7 larger than the inner diameter of the anal dilator 1, it is easier for the insert / remove inner core 2 to pass through the interior of the connecting ring 7.

[0029] Working principle: First, rotating the connecting ring 4 causes the connecting ring 7 and the external threaded cylinder 6 to rotate. Since the external threaded cylinder 6 is threadedly connected to the inner wall of the annular threaded groove 5, the external threaded cylinder 6, connecting ring 7, connecting ring 4, and adjusting seat 3 can move left and right. The distance between the adjusting seat 3 and the right end of the dilator cylinder 1 is determined according to the depth of the patient's hemorrhoid lesions. Therefore, during use, the insert / extractable inner core 2 needs to be inserted into the dilator cylinder 1 until the four positioning rods 9 abut against the connecting ring 7. Then, the dilator cylinder 1, along with the insert / extractable inner core 2, is moved together... Insert the inner core 2 into the patient's anus, keeping it in the same position throughout the process, until the adjusting seat 3 is in close contact with the patient's body. At this point, the insertion end of the anal dilator 1 is positioned precisely at the patient's hemorrhoid lesion. Then, pull out the inner core 2 using the push-pull rod 11 and push-pull handle 10. The hemorrhoid to be circumcised will then enter the interior of the anal dilator 1, facilitating subsequent circumcision surgery using an anorectal stapler. In this way, the position of the adjusting seat 3 can be easily adjusted to suit patients with different hemorrhoid lesion depths.

[0030] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An adjustable anal dilator for anorectal anastomosis, comprising an anal dilator tube (1) and an insertable inner core (2) sleeved inside the anal dilator tube (1), characterized in that: An adjusting seat (3) is fitted onto the outer wall of the anal dilator (1). A connecting ring (4) is fixedly connected to the inner wall of the adjusting seat (3). A connecting ring (7) is fixedly connected to the left side of the connecting ring (4). An annular threaded groove (5) is opened on the left side of the anal dilator (1). An external threaded cylinder (6) fixedly connected to the connecting ring (7) is threaded inside the annular threaded groove (5). A push-pull rod (11) passing through the inside of the connecting ring (7) is fixedly connected to the left end of the insert / pull inner core (2).

2. The adjustable anal dilator for anorectal anastomosis according to claim 1, characterized in that: The outer wall of the push-pull rod (11) is fixedly connected to a connecting plate (8), and four positioning rods (9) are fixedly connected to the right side of the connecting plate (8).

3. An adjustable anal dilator for anorectal anastomosis according to claim 1, characterized in that: A limiting ring (12) is fixedly connected to the outer wall of the expanding anal tube (1).

4. An adjustable anal dilator for anorectal anastomosis according to claim 1, characterized in that: The right corner of the anal dilator (1) is rounded.

5. An adjustable anal dilator for anorectal anastomosis according to claim 1, characterized in that: A push-pull handle (10) is provided on the left side of the push-pull rod (11).

6. An adjustable anal dilator for anorectal anastomosis according to claim 1, characterized in that: The inner diameter of the connecting ring (7) is larger than the inner diameter of the anal dilator (1).

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