A dilator

Abstract

The utility model provides an anus dilator, including cylinder and telescopic link, telescopic link is installed in the cylinder, and telescopic link is connected with knob, and knob is connected with telescopic link circumferentially, and knob rotatory installation is in the tail end of cylinder, the outer periphery of cylinder head portion is equipped with a plurality of expansion splints around, and the outer periphery of cylinder head portion is equipped with flexible sleeve together with a plurality of expansion splints, the inner periphery of expansion splint is equipped with first connecting rod articulated telescopic link, and the inner periphery of expansion splint is equipped with second connecting rod articulated cylinder, the outer periphery of telescopic link is equipped with screw thread, and the inner periphery of cylinder is equipped with the screw thread of cooperation, the side of the outer periphery of cylinder is equipped with scale line close to knob, and the outer periphery of knob is equipped with indicating arrow, or the side of the outer periphery of cylinder is equipped with indicating arrow close to knob, and the outer periphery of knob is equipped with scale line. The flexible sleeve of expansion splint is equipped together, can play the role of protecting the skin of patient, avoids expansion splint and contracts when clamping to the skin of patient, and scale line is convenient for medical treatment and determines the current expansion splint size.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to an anal dilator. Background Technology

[0002] The anorectal region refers to the anus and rectum. Anorectal diseases are common and frequently occurring. After anorectal surgery, anal dilation is usually necessary to prevent anal stenosis. To reduce the workload of medical staff, anal dilators are often used. However, current anal dilators lack graduations and protective covers for the dilating plates. In actual use, the degree of dilation cannot be quantified, making it impossible to perform anal dilation treatment gradually. Furthermore, the lack of a cushioning protective cover can easily cause anal injury. Utility Model Content

[0003] To address the aforementioned problems, the purpose of this utility model is to provide an anal dilator.

[0004] This utility model is implemented using the following method: A rectal dilator includes a cylindrical body and a telescopic rod. The telescopic rod is installed in the cylindrical body and connected to a knob. The knob is circumferentially limited and connected to the telescopic rod. The knob is rotatably mounted on the tail end of the cylindrical body. Multiple expanding plates are arranged around the outer periphery of the head of the cylindrical body, and a flexible sleeve is commonly fitted over the multiple expanding plates. A first connecting rod is provided on the inner circumferential surface of the expanding plates to hinge the telescopic rod, and a second connecting rod is provided on the inner circumferential surface of the expanding plates to hinge the cylindrical body. The outer circumferential surface of the telescopic rod is threaded, and the inner circumferential surface of the cylindrical body is provided with a matching thread. A scale line is provided on the outer circumferential surface of the cylindrical body near the knob, and an indicator arrow is provided on the outer circumferential surface of the knob, or an indicator arrow is provided on the outer circumferential surface of the cylindrical body near the knob, and a scale line is provided on the outer circumferential surface of the knob, for indicating the current expansion dimension of the expanding plates.

[0005] Preferably, the telescopic rod is provided with a connector, the first connecting rod is connected to the connector, and the cylinder is provided with a clearance groove at the position opposite to the connector to facilitate the connection between the connector and the first connecting rod.

[0006] Preferably, the connector is a connecting ring, and the telescopic rod has an annular limiting groove on its circumferential surface, with the connecting ring sleeved in the limiting groove.

[0007] Preferably, a plurality of first hinge portions are arranged in annular array on the outer circumferential surface of the connecting ring, the width of the relief groove matches the width of the hinge portion, the first hinge portion extends out from the relief groove, one end of the first connecting rod is hinged to the first hinge portion, and the axis of the relief groove is parallel to the axis of the telescopic rod; a second hinge portion is provided on the inner circumferential surface of the expansion plate, and the other end of the first connecting rod is connected to the second hinge portion; one end of the second connecting rod is hinged to the second hinge portion, and a third hinge portion is provided on the outer circumferential surface of the cylinder at a specified distance from the relief groove, and the third hinge portion is connected to the other end of the second connecting rod.

[0008] Preferably, the telescopic rod has two axially spaced limiting grooves on its circumferential surface, and each of the expansion plates has two axially spaced second hinge portions on its inner circumferential surface. The third hinge portions are spaced two on the same straight line parallel to the axis of the cylinder on the outer circumferential surface of the cylinder.

[0009] Preferably, the telescopic rod has a limiting protrusion on its tail circumference, the knob is cylindrical, the inner circumference of the knob has an axial guide groove, the limiting protrusion is located in the guide groove, and the limiting protrusion can move along the guide groove.

[0010] Preferably, the inner circumferential surface of the head of the knob is provided with an annular connecting groove, and the outer circumferential surface of the tail of the cylinder is provided with a protruding ring. The protruding ring is installed in the connecting groove to guide the rotation of the knob.

[0011] Preferably, the head of the knob is provided with an annular convex ring on its outer periphery, and the tail of the cylinder is provided with an annular connecting groove on its outer periphery. The convex ring is installed in the connecting groove to guide the rotation of the knob.

[0012] Preferably, the expansion piece is provided in three pieces, the expansion piece is arc-shaped, when the three expansion pieces are in the contracted state, the sides of the adjacent expansion pieces are connected, forming a cylindrical shape; when the three expansion pieces are in the expanded state, the sides of the adjacent expansion pieces are spaced apart.

[0013] Preferably, a gripping part is provided on the outer peripheral surface of the cylinder near the tail end, and the scale is arranged around the outer peripheral surface of the gripping part.

[0014] The beneficial effects of this utility model are as follows: This utility model provides an anal dilator, which, compared with the prior art, has at least the following technical effects: 1. By rotating the telescopic rod relative to the cylinder through the knob, the telescopic rod can be extended or retracted relative to the cylinder, thereby enabling the angle to change at the connection between the first and second connecting rods, so that the dilator plates move outward relative to the cylinder to expand or move closer to contract; and a flexible sleeve is fitted over all the dilator plates, which can protect the patient's skin and prevent the dilator plates from pinching the patient's skin when contracting. In addition, the knob has or the circumference of the cylinder tail has scale lines or indicator arrows, which makes it convenient for medical staff to determine the current dilator plate expansion size.

[0015] 2. By fitting the connecting ring into the limiting groove, the connecting ring can rotate relative to the telescopic rod. A clearance groove is provided on the cylinder. In this way, when the telescopic rod rotates, the connecting ring can be fixed relative to the cylinder in the circumferential direction and can only move longitudinally relative to the cylinder. This drives the first connecting rod to move longitudinally relative to the cylinder, thereby changing the angle of the first connecting rod and the second connecting rod, and thus realizing the expansion or contraction of the expansion plate.

[0016] 3. The connecting ring is provided with a hinge part on its circumference, and a clearance groove is provided at the corresponding position on the circumference of the cylinder. This can play a limiting and guiding role for the junction, that is, guide the movement of the connecting ring and limit the rotation of the connecting ring. When the connecting ring approaches or moves away from the third hinge part on the cylinder, the ends of the expansion plates of the first connecting rod and the second connecting rod that are far away from each other can move closer or further away from each other, thus realizing the expansion or contraction of the expansion plates.

[0017] 4. The connecting ring, the first connecting rod, and the second connecting rod are in two sets, so that each expansion plate has two support points, which can keep it parallel to the axis of the cylinder when expanding or contracting.

[0018] 5. The tail of the telescopic rod is provided with a limiting protrusion, and the inner circumferential surface of the knob is provided with a guide groove. The limiting protrusion is placed in the guide groove, which can drive the telescopic rod to rotate and move the telescopic rod relative to the knob along the axis. The axial dimension of the guide groove is much larger than the axial dimension of the limiting protrusion, leaving enough space for its movement.

[0019] 6. The inner circumferential surface of the knob head is provided with an annular connecting groove, and the outer circumferential surface of the tail of the cylinder is provided with a protruding ring. The protruding ring is installed in the connecting groove to facilitate rotating the knob to the tail of the cylinder.

[0020] 7. The expansion piece has three pieces, and after expansion, the overall shape is closer to a circle, and the expansion effect is better.

[0021] 8. The tail of the cylinder has a grip for easy operation of the knob to control the expansion or contraction of the expansion plate. Attached Figure Description

[0022] Figure 1This is a schematic diagram of the expanded state of an anal dilator according to this utility model.

[0023] Figure 2 This is a schematic diagram of the expanded state of an anal dilator according to this utility model from another perspective.

[0024] Figure 3 This is a schematic diagram of the contracted state of an anal dilator according to this utility model.

[0025] Figure 4 Image A is a cross-sectional structural diagram of the anal dilator of this utility model in its contracted state.

[0026] Figure 4 Figure B is a cross-sectional structural diagram of the expanded state of an anal dilator according to this utility model.

[0027] Figure 5 This is a schematic diagram of the expanded state of an anal dilator of this utility model, after removing a dilator support plate and a knob.

[0028] Figure 6 This is a schematic diagram of the expanded state of a dilator, including a dilator plate, a knob, and a cylinder, according to this utility model.

[0029] Figure 7 This is a schematic diagram showing the connection state of the expanding plate and connecting ring of an anal dilator according to this utility model.

[0030] Figure 8 This is a schematic diagram of the telescopic rod of an anal dilator according to this utility model.

[0031] Figure 9 This is a cross-sectional structural diagram of the cylindrical connecting knob of a rectal dilator according to this utility model.

[0032] Figure 10 This is a schematic diagram of the cylinder connection knob of an anal dilator according to this utility model.

[0033] Explanation of reference numerals: 1. Cylinder body; 11. Clearance groove; 12. Third hinge; 13. Protruding ring; 14. Grip; 2. Telescopic rod; 21. Limiting groove; 22. Limiting protrusion; 3. Knob; 31. Guide groove; 32. Connecting groove; 33. Fixing plate; 4. Expanding plate; 41. Second hinge; 5. First connecting rod; 6. Second connecting rod; 7. Flexible sleeve; 8. Connecting ring; 81. First hinge; 9. Scale line; 10. Indicating arrow. Detailed Implementation

[0034] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0035] Please see Figures 1 to 10A rectal dilator includes a cylindrical body 1 and a telescopic rod 2. The telescopic rod 2 is installed in the cylindrical body 1 and connected to a knob 3. The knob 3 is circumferentially limited by the telescopic rod 2 and is rotatably mounted at the tail end of the cylindrical body 1. Multiple expanding plates 4 are arranged around the outer periphery of the head of the cylindrical body 1, and a flexible sleeve 7 is commonly fitted over the multiple expanding plates 4. A first connecting rod 5 is provided on the inner circumferential surface of the expanding plate 4 to hinge the telescopic rod 2. The cylinder 1 is hinged by a second connecting rod 6; the outer circumferential surface of the telescopic rod 2 is threaded, and the inner circumferential surface of the cylinder 1 is threaded in a matching manner; the outer circumferential surface of the cylinder 1 near the knob 3 has a scale line 9, and the outer circumferential surface of the knob 3 has an indicator arrow 10, or the outer circumferential surface of the cylinder 1 near the knob 3 has an indicator arrow 10, and the outer circumferential surface of the knob 3 has a scale line 9, used to indicate the current expansion size of the expansion piece 4. By rotating the telescopic rod 2 relative to the cylinder 1 through the knob 3, the telescopic rod 2 can be extended or retracted relative to the cylinder 1, resulting in an angle change, causing the expansion piece 4 to move outward or retract relative to the cylinder 1; and a flexible sleeve 7 is fitted over all the expansion pieces 4 to protect the patient's skin and prevent the expansion piece 4 from pinching the patient's skin when it retracts, and the scale line 9 or indicator arrow 10 on the knob 3 or the circumferential surface of the tail of the cylinder 1 facilitate medical staff to determine the current expansion size of the expansion piece 4. Anal dilation therapy involves gradually widening the patient's narrow anus. For example, if the anus is widened by 1 cm today, the knob can be rotated to widen it to 1.5 cm tomorrow. At this point, the indicator arrow should be aligned with the 1.5 cm mark. This process is repeated to gradually widen the anus to the specified size. Setting a scale mark allows both the patient and medical staff to visually see the current dilation level, which can increase their confidence.

[0036] Please see Figures 1 to 8 Preferably, the telescopic rod 2 is provided with a connector, and the first connecting rod 5 and the connector are provided with a clearance groove 11 at the position opposite to the connector on the cylinder 1, so as to facilitate the connection between the connector and the first connecting rod 5. The connector is a connecting ring 8, and the telescopic rod 2 has an annular limiting groove 21 on its circumferential surface, and the connecting ring 8 is sleeved in the limiting groove 21. By the connecting ring 8 being sleeved in the limiting groove 21, the connecting ring 8 can rotate relative to the telescopic rod 2, and the clearance groove 11 on the cylinder 1 allows the connecting ring 8 to be fixed relative to the cylinder 1 in the circumferential direction when the telescopic rod 2 rotates, and can only move longitudinally relative to the cylinder 1, thereby driving the first connecting rod 5 to move longitudinally relative to the cylinder 1, so as to change the angle of the first connecting rod 5 and the second connecting rod 6, thereby realizing the expansion or contraction of the expansion piece 4.

[0037] Please see Figures 1 to 10Preferably, a plurality of first hinge portions 81 are arranged in annular array on the outer circumferential surface of the connecting ring 8. The width of the relief groove 11 matches the width of the hinge portion. The first hinge portion 81 extends out of the relief groove 11. One end of the first connecting rod 5 is hinged to the first hinge portion 81. The axis of the relief groove 11 is parallel to the axis of the telescopic rod 2. A second hinge portion 41 is provided on the inner circumferential surface of the expansion plate 4. The other end of the first connecting rod 5 is connected to the second hinge portion 41. One end of the second connecting rod 6 is hinged to the second hinge portion 41. A third hinge portion 12 is provided on the outer circumferential surface of the cylinder 1 at a specified distance from the relief groove 11. The third hinge portion 12 is connected to the other end of the second connecting rod 6. The connecting ring 8 has a hinged part on its circumference, and the cylinder 1 has a relief groove 11 at the corresponding position on its circumference. This groove can limit and guide the connection part, that is, guide the movement of the connecting ring 8 and restrict the rotation of the connecting ring 8. When the connecting ring approaches or moves away from the third hinged part 12 on the cylinder 1, the ends of the expansion plates 4 of the first connecting rod 5 and the second connecting rod 6 that are far apart can move closer or further apart, thus expanding or contracting the expansion plates 4.

[0038] Please see Figures 1 to 10 Preferably, the telescopic rod 2 has two axially spaced limiting grooves 21 on its circumferential surface, and each of the expanding plates 4 has two axially spaced second hinge portions 41 on its inner circumferential surface. The third hinge portions 12 are spaced two on the outer circumferential surface of the cylinder 1 in the same straight line direction parallel to the axis of the cylinder 1. The connecting ring 8, the first connecting rod 5, and the second connecting rod 6 are in two sets, so that each expanding plate 4 has two support points, thus maintaining parallelism with the axis of the cylinder 1 during expansion or contraction.

[0039] Please see Figures 1 to 10 Preferably, the telescopic rod 2 has a limiting protrusion 22 on its tail circumference, the knob 3 is cylindrical, and the inner circumference of the knob 3 has an axial guide groove 31. The limiting protrusion 22 is located in the guide groove 31 and can move along the guide groove 31. With the limiting protrusion 22 at the tail of the telescopic rod 2 and the guide groove 31 on the inner circumference of the knob 3, the limiting protrusion 22 can be positioned in the guide groove 31 to drive the telescopic rod 2 to rotate and move axially relative to the knob 3. The axial dimension of the guide groove 31 is much larger than the axial dimension of the limiting protrusion 22, providing sufficient space for its movement.

[0040] Please see Figures 1 to 4 Preferably, the end of the knob 3 is equipped with a retaining ring to prevent the telescopic rod 2 from coming off.

[0041] Please see Figures 1 to 5 , Figure 9 , Figure 10 Preferably, the inner circumferential surface of the head of the knob 3 is provided with an annular connecting groove 32, and the outer circumferential surface of the tail of the cylinder 1 is provided with a protruding ring 13. The protruding ring 13 is installed in the connecting groove 32 to guide the rotation of the knob 3. This facilitates the rotation of the knob 3 to the tail of the cylinder 1. Alternatively, the outer circumference of the head of the knob 3 is provided with an annular protruding ring 13, and the outer circumferential surface of the tail of the cylinder 1 is provided with an annular connecting groove 32. The protruding ring 13 is installed in the connecting groove 32 to guide the rotation of the knob 3. This facilitates the rotation of the knob 3 to the tail of the cylinder 1.

[0042] Please see Figures 1 to 7 Preferably, the expanding piece 4 has three pieces, each of which is arc-shaped. When the three expanding pieces 4 are in the contracted state, the sides of adjacent expanding pieces 4 are connected, forming a cylindrical shape; when the three expanding pieces 4 are in the expanded state, the sides of adjacent expanding pieces 4 are spaced apart. After expansion, the overall shape is closer to a circle, and the expansion effect is better.

[0043] Please see Figures 1 to 5 , Figure 9 , Figure 10 Preferably, a gripping part 14 is provided on the outer peripheral surface of the cylinder 1 near the tail end, and the scale is arranged around the outer peripheral surface of the gripping part 14. This facilitates the operation of the knob 3 to control the expansion plate 4 to expand or contract.

[0044] The working principle of this utility model is as follows:

[0045] Place the anal dilator in the designated position, then grasp the grip part 14 with one hand and hold the knob 3 with the other hand to rotate it, which in turn rotates the telescopic rod 2, causing the telescopic rod 2 to move relative to the cylinder 1 towards the tail of the cylinder 1. This causes the connecting ring 8 on the telescopic rod 2 to move towards the tail of the cylinder 1, bringing the first hinge part 81 closer to the second hinge part 41. This reduces the angle between the first connecting rod 5 and the second connecting rod 6, pushing the dilator plate 4 outward. The indicator arrow 10 on the knob 3 is currently aligned with the scale line 9, which indicates the current dilution size of the dilator plate 4, allowing medical staff to accurately know the current dilution size and ensuring accurate operation. When it is necessary to shrink and withdraw the anal dilator, rotate the knob 3 in the opposite direction. Moreover, due to the flexible sleeve 7, the flexible sleeve 7 expands and shrinks along with the dilator plate 4, always wrapping around the dilator plate 4. This prevents the patient's skin from entering the gap between the dilator plates 4 when the dilator plate 4 shrinks and returns to its original position, thus protecting the patient.

[0046] Several points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection" and "linkage" should be interpreted broadly, and can be mechanical or electrical connection, or internal connection between two components, or direct connection. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationship. When the absolute position of the described object changes, the relative positional relationship may change.

[0047] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0048] Finally, the above description is only a preferred embodiment of the present utility model. The protection scope of the present utility model is not limited to the above embodiments. All technical solutions that fall within the scope of the present utility model are protected by the present utility model.

[0049] It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of this utility model should also be considered within the scope of protection of this utility model.

Claims

1. A rectal dilator, characterized in that: The device includes a cylindrical body and a telescopic rod. The telescopic rod is installed inside the cylindrical body and connected to a knob. The knob is circumferentially limited by the telescopic rod and is rotatably mounted at the tail end of the cylindrical body. Multiple expanding plates are arranged around the outer periphery of the head of the cylindrical body, and a flexible sleeve is fitted over all the expanding plates. A first connecting rod is provided on the inner circumferential surface of each expanding plate to hinge the telescopic rod, and a second connecting rod is provided on the inner circumferential surface of each expanding plate to hinge the cylindrical body. The outer circumferential surface of the telescopic rod is threaded, and the inner circumferential surface of the cylindrical body is threaded in a matching manner. A scale line is provided on the outer circumferential surface of the cylindrical body near the knob, and an indicator arrow is provided on the outer circumferential surface of the knob; alternatively, an indicator arrow is provided on the outer circumferential surface of the cylindrical body near the knob, and a scale line is provided on the outer circumferential surface of the knob, used to indicate the current expansion dimension of the expanding plates.

2. The anal dilator according to claim 1, characterized in that: The telescopic rod is provided with a connector, the first connecting rod is connected to the connector, and the cylinder is provided with a clearance groove at the position opposite to the connector to facilitate the connection between the connector and the first connecting rod.

3. The anal dilator according to claim 2, characterized in that: The connector is a connecting ring, and the telescopic rod has an annular limiting groove on its circumference, with the connecting ring fitted into the limiting groove.

4. The anal dilator according to claim 3, characterized in that: The outer circumferential surface of the connecting ring is provided with a plurality of first hinge portions arranged in a ring array. The width of the relief groove matches the width of the hinge portion. The first hinge portion extends out of the relief groove. One end of the first connecting rod is hinged to the first hinge portion. The axis of the relief groove is parallel to the axis of the telescopic rod. The inner circumferential surface of the expansion plate is provided with a second hinge portion. The other end of the first connecting rod is connected to the second hinge portion. One end of the second connecting rod is hinged to the second hinge portion. The outer circumferential surface of the cylinder is provided with a third hinge portion at a specified distance from the relief groove. The third hinge portion is connected to the other end of the second connecting rod.

5. The anal dilator according to claim 4, characterized in that: The telescopic rod has two axially spaced limiting grooves on its circumferential surface, and each of the expansion plates has two axially spaced second hinge parts on its inner circumferential surface. The third hinge parts are spaced two on the same straight line parallel to the axis of the cylinder on the outer circumferential surface of the cylinder.

6. The anal dilator according to claim 1, characterized in that: The telescopic rod has a limiting protrusion on its tail circumference. The knob is cylindrical and has an axial guide groove on its inner circumference. The limiting protrusion is located in the guide groove and can move along the guide groove.

7. The anal dilator according to claim 6, characterized in that: The inner circumferential surface of the head of the knob is provided with an annular connecting groove, and the outer circumferential surface of the tail of the cylinder is provided with a convex ring. The convex ring is installed in the connecting groove to guide the rotation of the knob.

8. The anal dilator according to claim 6, characterized in that: The knob has an annular convex ring on the outer periphery of its head, and the cylinder has an annular connecting groove on the outer periphery of its tail. The convex ring is fitted into the connecting groove to guide the rotation of the knob.

9. The anal dilator according to claim 1, characterized in that: The expansion piece is provided in three pieces, and the expansion piece is arc-shaped. When the three expansion pieces are in the contracted state, the sides of the adjacent expansion pieces are connected, forming a cylindrical shape; when the three expansion pieces are in the expanded state, the sides of the adjacent expansion pieces are spaced apart.

10. The anal dilator according to claim 1, characterized in that: The outer circumference of the cylinder is provided with a grip on the side near the tail, and the scale lines are arranged around the outer circumference of the grip.

Images