Anal dilatation device

Abstract

The utility model relates to an anal dilatation device, which belongs to medical instruments and comprises an outer ring, an inner ring rotatably mounted on the inner side of the outer ring, a plurality of through grooves arranged on the end face of the outer ring, a transverse rod slidably positioned in the through grooves, a guide groove arranged on the end face of the inner ring, and a guide rod fixedly connected to one side of the transverse rod facing the circle center of the outer ring and slidably positioned in the guide groove. One side, away from the outer ring, of the transverse rod is fixedly connected with an anal dilatation rod; ratchets are arranged on the inner side of the circumference of the outer ring, a rotating shaft is rotationally installed on the outer wall of the circumference of the inner ring, a connecting plate is fixedly connected to the rotating shaft, a pawl is fixedly connected to the end, away from the rotating shaft, of the connecting plate, the pawl is meshed with the ratchets, and the rotating shaft is sleeved with a torsional spring. The anal dilatation device has the advantages that the inner ring rotates to drive the transverse rod to slide, the transverse rod drives the anal dilatation rod to open to achieve anal dilatation, medical staff conduct medical work through the hole in the inner side of the inner ring, the pawl is meshed with the ratchet, the locking function is achieved, the inner ring is prevented from rotating reversely, the anal dilatation rod is prevented from resetting automatically, use is convenient, and the labor intensity of the medical staff is reduced.

Description

Technical Field

[0001] The utility model relates to a medical appliance, in particular to an anal dilator. Background Art

[0002] An anal dilator is a commonly used medical appliance. When in use, it is inserted into the patient's anus for anal dilation, and is mainly used for anorectal medical examinations and surgical treatments.

[0003] The patent with the application number "2015101153174" discloses an "anal dilator". Its disadvantage is that it does not have a self-locking function, and continuous manual pressure needs to be applied by medical staff to prevent the anal dilator from closing, resulting in a relatively high labor intensity and inconvenient use. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide an anal dilator with a locking function.

[0005] The technical solution of the utility model to solve the above technical problem is as follows: An anal dilator includes an outer ring. An inner ring is rotatably installed inside the outer ring. A plurality of through grooves are evenly formed on the end face of the outer ring around the axis, and the length direction of each through groove points to the center of the outer ring. A cross bar slides in the through groove. On the end face of the inner ring, a plurality of guiding grooves corresponding to the through grooves one by one are evenly formed around the axis. The guiding groove and the through groove form an included angle. On the side of the cross bar facing the center of the outer ring, a guiding rod is fixedly connected. The guiding rod slides in the guiding groove. On the side of the cross bar away from the outer ring, an anal dilating rod is fixedly connected.

[0006] On the inner circumference of the outer ring, ratchet teeth are evenly arranged. On the outer circumferential wall of the inner ring, a receiving groove is formed. A rotating shaft is rotatably installed in the receiving groove. The axis of the rotating shaft is parallel to the axis of the inner ring. On the outer circumferential wall of the rotating shaft, a connecting plate is fixedly connected. At the end of the connecting plate away from the rotating shaft, a ratchet pawl is fixedly connected. The ratchet pawl meshes with the ratchet teeth. A torsion spring is sleeved on the rotating shaft. One end of the torsion spring is fixedly connected to the outer circumferential wall of the rotating shaft, and the other end is fixedly connected to the side wall of the receiving groove.

[0007] The beneficial effect of the utility model is that the rotation of the inner ring drives the cross bar to slide, and the cross bar drives the anal dilating rod to open to realize anal dilation. Medical staff can perform medical work through the holes inside the inner ring. The ratchet pawl meshes with the ratchet teeth, having a locking function, preventing the inner ring from reversing and the anal dilating rod from automatically resetting, being convenient to use and reducing the labor intensity of medical staff.

[0008] Based on the above technical solutions, the utility model can be further improved as follows.

[0009] Further, an arc-shaped sliding groove corresponding to the position of the storage groove is formed on the end surface of the inner ring away from the cross bar. The arc-shaped sliding groove communicates with the storage groove. An arc-shaped sliding block is slidably arranged in the arc-shaped sliding groove. One end of the arc-shaped sliding block facing the storage groove is fixedly connected with a driving inclined block. The driving inclined block extends into the storage groove and cooperates with the ratchet pawl to drive the ratchet pawl to disengage from the ratchet teeth.

[0010] The beneficial effect of adopting the above further scheme is that after the driving inclined block drives the ratchet pawl to disengage from the ratchet teeth, the inner ring can rotate freely, which is convenient for the anal dilator rod to reset.

[0011] Further, the anal dilator rod includes an inner retracting section and an outer expanding section. One end of the inner retracting section is fixedly connected with the cross bar. The other end of the inner retracting section points towards the center of the outer ring and forms an angle with the axis of the outer ring. One end of the outer expanding section is fixedly connected with the end of the inner retracting section pointing towards the center of the outer ring. The other end of the outer expanding section points away from the center of the outer ring and forms an angle with the axis of the outer ring.

[0012] The beneficial effect of adopting the above further scheme is that the two curved anal dilator rods can better perform anal dilation and reduce the interference to medical staff.

[0013] Further, a plurality of handles are fixedly connected to the end surface of the inner ring away from the cross bar.

[0014] The beneficial effect of adopting the above further scheme is that it is convenient to rotate the inner ring through the handles, and the handles can be used as support feet for placement when not in use.

[0015] Further, anti-slip lines are arranged on the arc-shaped sliding block.

[0016] The beneficial effect of adopting the above further scheme is that the anti-slip lines prevent hand slipping when pushing the arc-shaped sliding block.

[0017] Further, the anal dilator rod is made of metal.

[0018] The beneficial effect of adopting the above further scheme is that the metal material has high strength, no irritation, and can also achieve a high surface smoothness to avoid scratching the patient's skin during use. Description of the Drawings

[0019] Figure 1 It is an assembly schematic diagram of the present utility model.

[0020] Figure 2 It is a schematic diagram of the arc-shaped sliding groove of the present utility model.

[0021] Figure 3 It is an exploded view of the present utility model.

[0022] Figure 4Schematic diagram of the inner ring of the present utility model.

[0023] Figure 5 Schematic diagram of the pawl of the present utility model.

[0024] In the attached drawings, the list of components represented by each reference numeral is as follows:

[0025] 1. Outer ring; 2. Inner ring; 3. Through groove; 4. Cross bar; 5. Guide groove; 6. Guide rod; 7. Anal dilator rod; 8. Ratchet teeth; 9. Receiving groove; 10. Rotating shaft; 11. Connecting plate; 12. Pawl; 13. Torsion spring; 14. Arc-shaped chute; 15. Arc-shaped slider; 16. Driving inclined block; 17. Handle;

[0026] 701. Inner retraction section; 702. Outer expansion section. Specific embodiments

[0027] The principles and features of the present utility model will be described below in conjunction with the attached drawings. The examples given are only used to explain the present utility model and are not intended to limit the scope of the present utility model.

[0028] Embodiment 1

[0029] As Figures 1 to 5 shown, an anal dilator includes an outer ring 1, an inner ring 2 is rotatably installed inside the outer ring 1, a plurality of through grooves 3 are evenly formed on the end face of the outer ring 1 around the axis, the length directions of the through grooves 3 all point to the center of the outer ring 1, a cross bar 4 is slidably located in the through groove 3, a guide groove 5 corresponding to the through groove 3 one by one is evenly formed on the end face of the inner ring 2 around the axis, the guide groove 5 forms an angle with the through groove 3, a guide rod 6 is fixedly connected to the side of the cross bar 4 facing the center of the outer ring 1, the guide rod 6 is slidably located in the guide groove 5, and an anal dilator rod 7 is fixedly connected to the side of the cross bar 4 away from the outer ring 1;

[0030] Ratchet teeth 8 are evenly arranged on the inner circumference of the outer ring 1, a receiving groove 9 is formed on the outer circumferential wall of the inner ring 2, a rotating shaft 10 is rotatably installed in the receiving groove 9, the axis of the rotating shaft 10 is parallel to the axis of the inner ring 2, a connecting plate 11 is fixedly connected to the outer circumferential wall of the rotating shaft 10, a pawl 12 is fixedly connected to the end of the connecting plate 11 away from the rotating shaft 10, the pawl 12 meshes with the ratchet teeth 8, a torsion spring 13 is sleeved on the rotating shaft 10, one end of the torsion spring 13 is fixedly connected to the outer circumferential wall of the rotating shaft 10, and the other end is fixedly connected to the side wall of the receiving groove 9.

[0031] The beneficial effect of this embodiment is that the rotation of the inner ring 2 drives the cross bar 4 to slide, the cross bar 4 drives the anal dilator rod 7 to open to achieve anal dilation, medical staff can perform medical work through the hole inside the inner ring 2, the pawl 12 meshes with the ratchet teeth 8, which has a locking function to prevent the inner ring 2 from reversing and the anal dilator rod 7 from automatically resetting, is easy to use, and reduces the labor intensity of medical staff.

[0032] Specifically, when anal dilation is required, insert the anal dilation rod 7 of this device into the patient's anus, and then pinch the outer ring 1 to rotate the inner ring 2. The inner ring 2 and the outer ring 1 are coaxial. As Figure 5 shown, the counterclockwise direction of the inner ring 2 is defined as the forward rotation;

[0033] When the inner ring 2 rotates counterclockwise, it drives the guide groove 5 to generate a spatial displacement within the outer ring 1. The guide groove 5 drives the guide rod 6 to slide. Since the guide groove 5 on the inner ring 2 and the through groove 3 are at an angle, when the guide rod 6 slides within the guide groove 5, its spatial position continuously moves away from the center of the inner ring 2. The guide rod 6 drives the cross bar 4 to slide towards the side away from the center of the outer ring 1, thereby realizing the mutual separation of multiple anal dilation rods 7 and completing anal dilation;

[0034] Because the pawl 12 is triangular in shape, usually one side of the ratchet tooth 8 is a bevel and the other side is a vertical surface. When the bevel surface of the pawl 12 moves along the bevel surface direction of the ratchet tooth 8, the inner ring 2 can rotate freely. However, when reverse rotation is desired, the vertical surface of the ratchet tooth 8 hooks the pawl 12 to prevent the inner ring 2 from reversing and the anal dilation rod 7 from automatically resetting during use. During anal dilation, it is not necessary for medical staff to continuously apply force to the inner ring 2, reducing the labor intensity.

[0035] When reverse rotation of the inner ring 2 and resetting of the anal dilation rod 7 are required, manually push aside the pawl 12 to disengage the pawl 12 and the ratchet tooth 8, and then the inner ring 2 can be rotated in reverse.

[0036] Embodiment 2

[0037] As Figures 4 to 5 shown, preferably, on the basis of Embodiment 1, an arc-shaped sliding groove 14 corresponding to the position of the storage groove 9 is formed on the end surface of the end of the inner ring 2 away from the cross bar 4. The arc-shaped sliding groove 14 communicates with the storage groove 9. An arc-shaped sliding block 15 is slidably arranged in the arc-shaped sliding groove 14. One end of the arc-shaped sliding block 15 facing the storage groove 9 is fixedly connected with a driving inclined block 16. The driving inclined block 16 extends into the storage groove 9 and cooperates with the pawl 12 to drive the pawl 12 to disengage from the ratchet tooth 8.

[0038] The beneficial effect of adopting the preferred solution in the above embodiment is that after the driving inclined block 16 drives the pawl 12 to disengage from the ratchet tooth 8, the inner ring 2 can rotate freely in reverse, facilitating the resetting of the anal dilation rod 7.

[0039] Specifically, as Figure 4 shown, when forward rotation of the inner ring 2 is required, push the arc-shaped sliding block 15 to one side. The pawl 12 contacts the ratchet tooth 8 for limiting, and the driving inclined block 16 does not contact the pawl 12. Medical staff can only rotate the inner ring 2 forward and cannot rotate it in reverse;

[0040] When reverse rotation of the inner ring 2 is required, then push the arc-shaped sliding block 15 towards the pawl 12 direction. AsFigure 5 As shown, the pawl 12 is triangular and the end far from the rotating shaft 10 is a tip. When the pawl 12 meshes with the ratchet teeth 8, the tip of the pawl 12 extends beyond the height of the ratchet teeth 8;

[0041] The driving cam 16 is also triangular and the end facing the pawl 12 is a tip. When the driving cam 16 approaches the pawl 12, the tip of the driving cam 16 is inserted between the pawl 12 and the ratchet teeth 8 along the inclined surface of the pawl 12, and gradually disengages the pawl 12 from the ratchet teeth 8, so that the inner ring 2 can rotate freely in reverse.

[0042] In addition, the arc-shaped chute 14 is coaxial with the inner ring 2. When the arc-shaped slider 15 slides in the arc-shaped chute 14, it moves in an arc, which can ensure that the arc-shaped slider 15 does not come into contact with the ratchet teeth 8.

[0043] On the basis of this embodiment, a spring can be installed in the arc-shaped chute 14. One end of the spring abuts against the inner side wall of the arc-shaped chute 14, and the other end abuts against the side wall of the arc-shaped slider 15. The spring is used to drive the arc-shaped slider 15 to slide, so that the arc-shaped slider 15 remains at a position far from the pawl 12;

[0044] During use, the medical staff pushes the arc-shaped slider 15 close to the pawl 12, the spring is compressed, the driving cam 16 disengages the pawl 12 from the ratchet teeth 8, so that the inner ring 2 can rotate in reverse, and when the hand is released, the spring is released, and the arc-shaped slider 15 moves away from the pawl 12.

[0045] Embodiment 3

[0046] As Figures 1 to 3 shown, preferably, on the basis of Embodiments 1-2, the anal dilator rod 7 includes an adduction section 701 and an outward expansion section 702. One end of the adduction section 701 is fixedly connected to the cross bar 4, the other end of the adduction section 701 points in the direction of the center of the outer ring 1 and forms an angle with the axis of the outer ring 1, one end of the outward expansion section 702 is fixedly connected to the end of the adduction section 701 pointing to the center of the outer ring 1, and the other end of the outward expansion section 702 points in the direction away from the center of the outer ring 1 and forms an angle with the axis of the outer ring 1.

[0047] The beneficial effect of adopting the preferred scheme in the above embodiment is that the two curved anal dilator rods 7 can perform anal dilation better and reduce the interference to medical staff.

[0048] Specifically, the angle between the adduction section 701 and the cross bar 4 is greater than 50°, and the angle between the adduction section 701 and the central axis of the outer ring 1 is less than 30°.

[0049] Embodiment 4

[0050] As Figures 1 to 3 shown, preferably, on the basis of Embodiments 1-3, a plurality of handles 17 are fixedly connected to the end surface of the end of the inner ring 2 far from the cross bar 4.

[0051] The beneficial effects of adopting the preferred solution in the above embodiments are as follows: The handle 17 facilitates the rotation operation of the inner ring 2, and when not in use, the handle 17 can be placed as a support foot.

[0052] Embodiment 5

[0053] As Figure 2 shown, preferably, on the basis of Embodiments 1-4, anti-slip lines are provided on the arc-shaped slider 15.

[0054] The beneficial effects of adopting the preferred solution in the above embodiments are as follows: The anti-slip lines prevent the hand from slipping when pushing the arc-shaped slider 15.

[0055] Embodiment 6

[0056] As Figures 1 to 3 shown, preferably, on the basis of Embodiments 1-5, the anal dilator rod 7 is made of metal.

[0057] The beneficial effects of adopting the preferred solution in the above embodiments are as follows: The metal material has high strength, no irritation, and can also achieve a high surface smoothness, avoiding scratching the patient's skin during use.

[0058] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0059] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0060] In the present utility model, unless otherwise clearly defined or limited, terms such as "installation", "connection", "linkage", "fixation", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral one; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the internal communication between two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0061] In the present utility model, unless otherwise clearly defined or limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0062] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0063] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model.

Claims

1. An anal dilator, characterized in that, The invention comprises an outer ring (1), an inner ring (2) is rotatably mounted on the inner side of the outer ring (1), at least three through grooves (3) are evenly arranged on the end surface of the outer ring (1) around the axis, the length direction of the through grooves (3) all point to the center of the outer ring (1), a cross bar (4) is slidably located in the through grooves (3), guide grooves (5) corresponding to the through grooves (3) are evenly arranged on the end surface of the inner ring (2) around the axis, the guide grooves (5) and the through grooves (3) form an angle, a guide rod (6) is fixedly connected to the side of the cross bar (4) facing the center of the outer ring (1), the guide rod (6) is slidably located in the guide groove (5), and an anal expansion rod (7) is fixedly connected to the side of the cross bar (4) away from the outer ring (1); Ratchet teeth (8) are evenly arranged on the inner side of the circumference of the outer ring (1), and a receiving groove (9) is opened on the outer wall of the circumference of the inner ring (2). A rotating shaft (10) is rotatably installed in the receiving groove (9), and the axis of the rotating shaft (10) is parallel to the axis of the inner ring (2). A connecting plate (11) is fixedly connected to the outer wall of the circumference of the rotating shaft (10), and a ratchet (12) is fixedly connected to one end of the connecting plate (11) away from the rotating shaft (10), and the ratchet (12) is meshed with the ratchet teeth (8). A torsion spring (13) is sleeved on the rotating shaft (10), and one end of the torsion spring (13) is fixedly connected to the outer wall of the circumference of the rotating shaft (10), and the other end is fixedly connected to the side wall of the receiving groove (9).

2. The anus dilator according to claim 1, wherein, An arcuate slide groove (14) corresponding to the position of the receiving groove (9) is provided on the end surface of the inner ring (2) away from the cross bar (4); the arcuate slide groove (14) is connected to the receiving groove (9); an arcuate slider (15) is slidably arranged in the arcuate slide groove (14); a driving inclined block (16) is fixedly connected to one end of the arcuate slider (15) facing the receiving groove (9); the driving inclined block (16) extends into the receiving groove (9) and cooperates with the ratchet pawl (12) to drive the ratchet pawl (12) to disengage from the ratchet tooth (8).

3. The anus dilator according to claim 1, wherein The anal expansion rod (7) comprises an inward-retracting section (701) and an outward-retracting section (702); one end of the inward-retracting section (701) is fixedly connected to the cross bar (4); the other end of the inward-retracting section (701) points to the center of the outer ring (1) and forms an angle with the axis of the outer ring (1); one end of the outward-retracting section (702) is fixedly connected to one end of the inward-retracting section (701) pointing to the center of the outer ring (1); the other end of the outward-retracting section (702) points away from the center of the outer ring (1) and forms an angle with the axis of the outer ring (1).

4. The anus dilator according to claim 1, characterized in that, A plurality of handles (17) are also fixedly connected to the end surface of the inner ring (2) away from the cross bar (4).

5. The anus dilator according to claim 2, characterized in that, The arc-shaped sliding block (15) is provided with anti-slip grooves.

6. The anus dilator according to any one of claims 1 to 5, characterized in that, The anal expansion rod (7) is made of metal.

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