Vaginal dilator

Abstract

A vaginal dilator comprises an upper support member, a lower support member, a screw rod, and a nut. The upper support member extends a first handle portion downward, the lower support member extends a second handle portion downward, the second handle portion is provided with a limiting groove, the limiting groove comprises an embedding groove and multiple buckle grooves, the embedding groove has at least one embedding groove limiting surface, the screw rod has a head, a rod portion, and multiple protrusions, the head is embedded in the embedding groove, the head has at least one head limiting surface corresponding to at least one embedding groove limiting surface, the multiple protrusions are convexly provided on the outer periphery of the head, and are respectively buckled in the multiple buckle grooves, the rod portion extends from the head portion toward the first handle portion, and the nut is threadedly connected to the rod portion of the screw rod, thereby firmly fixing the screw rod in the limiting groove of the second handle portion.

Description

Technical Field

[0001] The present invention relates to a disposable medical device, and more particularly to a vaginal dilator capable of preventing a screw from rotating relative to a handle. Background Art

[0002] Conventional vaginal dilators primarily comprise an upper support member, a lower support member, a screw, and a nut. The upper and lower support members are pivotally connected to each other, each with a downwardly extending handle. The screw is fixed to the handle of the lower support member and extends toward and through the handle of the upper support member. The nut is threadedly connected to the screw and selectively abuts against the handle of the upper support member to limit the relative opening and closing positions of the upper and lower support members.

[0003] In order to prevent the screw from rotating relative to the lower support member when the nut is rotated to adjust the relative position of the nut relative to the screw, the circumferential surface of the screw head has at least one limiting plane, and the handle of the lower support member is recessed with a groove with a shape corresponding to the head of the screw, so that the head of the screw is clamped in the groove, thereby preventing the screw from rotating relative to the lower support member.

[0004] However, since the screw and the lower support member are usually plastic injection molded parts, the head of the screw or the groove of the lower support member is more likely to deform during injection molding, resulting in the screw head being unable to be firmly fixed in the groove of the lower support member, making the screw head easily loose and separated from the groove, or making the screw easily rotate relative to the lower support member, which needs to be improved. Summary of the Invention

[0005] In view of the above shortcomings, the main object of the present invention is to provide a vaginal dilator, the screw of which can be firmly fixed to the handle of the lower support member.

[0006] In order to achieve the above-mentioned purpose, the vaginal dilator of the present invention comprises:

[0007] an upper support member, wherein a first handle portion extends downwardly from the upper support member;

[0008] A lower support member is pivotally connected to the upper support member and extends a second handle downward. The second handle is located on one side of the first handle. The second handle includes a first side surface, a second side surface, a limiting groove, and a rod hole. The first side surface is away from the first handle, and the second side surface is adjacent to the first handle. The limiting groove includes an embedding groove and a plurality of buckle grooves. The embedding groove is recessed in the first side surface of the second handle. The end surface of the embedding groove away from the first side surface forms a distance with the second side surface. The peripheral surface has at least one embedding groove limiting surface, the multiple buckling grooves are formed at intervals on the outer periphery of the embedding groove, and open on the peripheral surface of the embedding groove and communicate with the embedding groove, the end surface of each buckling groove adjacent to the first side surface of the second handle forms a gap with the first side surface of the second handle, each buckling groove forms an opening on the second side surface of the second handle, the rod hole passes through the second side surface of the second handle and the end surface of the embedding groove and communicates with the embedding groove, the rod hole forms a gap with the multiple buckling grooves, and each buckling groove is separated from the rod hole by a partition wall;

[0009] a screw having a head, a stem, and a plurality of protrusions; the head is embedded in the embedding groove of the limiting groove; the circumference of the head has at least one head limiting surface corresponding in position and shape to the at least one embedding groove limiting surface; the plurality of protrusions are protruded from the outer circumference of the head at intervals and respectively snap-fit ​​into the plurality of buckle grooves of the limiting groove; the stem extends from the head toward the first handle; the stem of the screw is inserted into the stem hole of the second handle and then passes through the first handle; and

[0010] A nut is threadedly connected to the shank of the screw and selectively abuts against the first handle.

[0011] Optionally, each protrusion has a guide surface at one end of the rod portion adjacent to the screw.

[0012] Optionally, one end of each convex buckle away from the rod is flush with the end surface of the head away from the rod, and one end of each convex buckle adjacent to the rod has the same length as the end surface of the head adjacent to the rod.

[0013] Optionally, the circumferential surface of the embedding groove has two embedding groove limiting surfaces and two embedding groove arc surfaces, the two embedding groove limiting surfaces are arranged at intervals, and the two embedding groove arc surfaces are respectively connected to opposite ends of the two embedding groove limiting surfaces;

[0014] The limiting groove has two buckle grooves, which are respectively located outside the arc surfaces of the two embedded grooves and communicate with the embedded grooves;

[0015] The circumferential surface of the screw head has two head limiting surfaces and two head arc surfaces, the two head limiting surfaces respectively correspond to the positions of the two embedded groove limiting surfaces, and the two head arc surfaces respectively connect the opposite ends of the two head limiting surfaces and respectively correspond to the two embedded groove arc surfaces; and

[0016] The screw rod has two convex buckles, which are respectively convexly arranged on the two arc surfaces of the head parts and respectively buckled in the two buckle grooves.

[0017] Optionally, the circumscribed circle diameter of the rod hole is smaller than the circumscribed circle diameter of the embedding groove, the first handle is provided with a through hole, the rod of the screw is passed through the rod hole of the second handle and the through hole of the first handle and passes through the first handle.

[0018] By virtue of the above-mentioned technical features, when assembling the vaginal dilator of the present invention, force can be applied to press the head of the screw, so that the multiple protrusions of the screw are respectively locked in the buckle grooves of the limiting groove of the second handle, thereby limiting the position of the screw in the length direction and preventing the screw from falling out of the limiting groove. Since the head of the screw has a head limiting surface corresponding to the shape and position of the locking groove limiting surface of the locking groove, the screw can be prevented from rotating relative to the second handle, and the screw can be easily assembled and firmly fixed in the limiting groove of the second handle. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a three-dimensional appearance diagram of a preferred embodiment of the present invention.

[0020] Figure 2 Schematic diagram of the assembly of a preferred embodiment of the present invention.

[0021] Figure 3 This is a partially enlarged three-dimensional appearance diagram of the screw of a preferred embodiment of the present invention.

[0022] Figure 4 This is a partially enlarged side view of a screw rod according to a preferred embodiment of the present invention.

[0023] Figure 5 This is an end view of the screw of the preferred embodiment of the present invention.

[0024] Figure 6 This is a partially enlarged three-dimensional appearance diagram of the lower support member of a preferred embodiment of the present invention.

[0025] Figure 7 This is a partially enlarged sectional three-dimensional appearance view of the lower support member of a preferred embodiment of the present invention.

[0026] Figure 8 This is a partially enlarged three-dimensional appearance view of the lower support frame of a preferred embodiment of the present invention.

[0027] Figure 9 It is a partially enlarged side cross-sectional view of a preferred embodiment of the present invention. DETAILED DESCRIPTION

[0028] The following is a detailed description of the technical means used by the present invention to achieve the intended purpose of the invention, with reference to the drawings and preferred embodiments of the present invention.

[0029] Please refer to Figure 1 and Figure 2 A preferred embodiment of the vaginal dilator of the present invention includes an upper support member 10, a lower support member 20, a screw rod 30, and a nut 40. The upper support member 10, the lower support member 20, the screw rod 30, and the nut 40 are all made of plastic.

[0030] The upper support member 10 and the lower support member 20 are pivotally connected to each other, and the front sides of the upper support member 10 and the lower support member 20 respectively form an upper jaw 11 and a lower jaw 21 that can open and close relative to each other. The upper support member 10 extends a first handle 13 downward, and the lower support member 20 extends a second handle 23 downward. The second handle 23 is located on one side of the first handle 13. In this preferred embodiment, the second handle 23 is located on the front side of the first handle 13. The first handle 13 and the second handle 23 are for the user to hold, and the first handle 13 and the second handle 23 can be pressed to move relative to each other to operate the opening and closing of the upper jaw 11 and the lower jaw 21.

[0031] Please refer to Figure 2 、 Figure 6 ,and Figure 7 The second handle 23 has a first side surface 231, a second side surface 232, and a limiting groove 25. The first side surface 231 is away from the first handle 13, and the second side surface is adjacent to the first handle 13. The limiting groove 25 includes an embedding groove 252 and a plurality of buckle grooves 255. The embedding groove 252 is recessed in the first side surface 231 of the second handle 23. The end surface of the embedding groove 252 away from the first side surface 231 forms a distance with the second side surface 232. The circumferential surface of the embedding groove 252 has at least one embedding groove limiting surface 253, and the multiple buckling grooves 255 are spaced around the outer circumference of the embedding groove 252 and form an opening on the circumferential surface of the embedding groove 252 to communicate with the embedding groove 252, and the end surface of each buckling groove 255 adjacent to the first side surface 231 of the second handle 23 forms a distance from the first side surface 231 of the second handle 23; preferably, each buckling groove 255 forms an opening on the second side surface 232 of the second handle 23.

[0032] Please refer to Figures 2 to 5 ,and Figure 8The screw 30 has a head 31, a rod 33, and a plurality of protruding buckles 32. The head 31 is embedded in the embedding groove 252 of the limiting groove 25. The peripheral surface of the head 31 has at least one head limiting surface 312 corresponding to the position and shape of the at least one embedding groove limiting surface 253. The plurality of protruding buckles 32 are convexly arranged on the outer periphery of the head 31 at intervals and are respectively snapped into the plurality of buckle grooves 255 of the limiting groove 25. The rod 33 extends from the head 31 toward the first handle 13 and passes through the second handle 23 and the first handle 13. The second handle 23 is provided with a rod hole 24, and the rod hole 24 passes through the second side surface 232 of the second handle 23 and the end surface of the embedding groove 252, and is connected to the embedding groove 252. The circumscribed circle diameter of the rod hole 24 is smaller than the circumscribed circle diameter of the embedding groove 252. The rod hole 24 and the multiple buckle grooves 255 form a spacing, and each buckle groove 255 is separated from the rod hole 24 by a partition wall 245. The first handle 13 is provided with a through hole 14, and the rod portion 33 is penetrated by the rod hole 24 of the second handle 23 and the through hole 14 of the first handle 13 and passes through the first handle 13.

[0033] Please refer to Figure 1 and Figure 2 The nut 40 is threadedly connected to the rod portion 33 of the screw rod 30 and selectively abuts against the first handle portion 13 to limit the relative opening and closing positions of the upper support member 10 and the lower support member 20.

[0034] In this preferred embodiment, please refer to Figures 6 to 9 The circumference of the embedding groove 252 has two embedding groove limiting surfaces 253 and two embedding groove arc surfaces 254. The two embedding groove limiting surfaces 253 are arranged at intervals. The two embedding groove arc surfaces 254 are respectively connected to the opposite ends of the two embedding groove limiting surfaces 253. The limiting groove 25 has two buckle grooves 255. The two buckle grooves 255 are respectively located on the outer sides of the two embedding groove arc surfaces 254 and are connected to the embedding groove 252; please refer to Figures 3 to 5 ,and Figure 9 The circumferential surface of the head 31 of the screw rod 30 has two head limiting surfaces 312 and two head arc surfaces 313. The two head limiting surfaces 312 correspond to the positions of the two embedded groove limiting surfaces 253 respectively. The two head arc surfaces 313 connect the opposite ends of the two head limiting surfaces 312 respectively and correspond to the two embedded groove arc surfaces 254 respectively; the screw rod 30 has two convex buckles 32, which are respectively protruded from the two head arc surfaces 313 and are respectively buckled in the two buckle grooves 255.

[0035] Preferably, if Figure 4As shown, each protrusion 32 is flush with the end surface of the head 31 away from the rod 33 at one end away from the rod 33, and each protrusion 32 has the same length as the end surface of the head 31 adjacent to the rod 33, so that the length of each protrusion 32 is less than the length of the head 31, and the length of each protrusion 32 is less than or equal to 2 / 3 times the length of the head 31 and greater than or equal to 1 / 3 times the length of the head 31.

[0036] Preferably, each protrusion 32 has a guide surface 322 at one end adjacent to the rod portion 33 . The guide surface 322 gradually approaches the circumference of the head portion 31 toward the rod portion 33 , so that the protrusion 32 can be pressed into the embedding groove 252 more easily.

[0037] Please refer to Figure 2 and Figure 9 During assembly, the rod portion 33 of the screw rod 30 is inserted into the rod hole 24 of the second handle portion 23, and a force is applied to the head portion 31 of the screw rod 30, so that the convex buckles 32 of the screw rod 30 are pressed into the embedding groove 252 and respectively snapped into the multiple buckle grooves 255. The end surface of the head portion 31 of the screw rod 30 adjacent to the rod portion 33 is limited by the end surface of the embedding groove 252, and the end surface of the multiple convex buckles 32 away from the rod portion 33 is limited by the first side surface of the multiple buckle grooves 255 adjacent to the second handle portion 23. The end surface of the surface 231 is limited to limit the length direction position of the screw 30 and prevent the screw 30 from falling out of the limiting groove 25. Furthermore, since the head 31 of the screw 30 has a head limiting surface 312 corresponding in shape and position to the embedding groove limiting surface 253 of the embedding groove 252, the screw 30 can be prevented from rotating relative to the second handle 23; thereby, the screw 30 can be easily assembled and firmly fixed in the limiting groove 25 of the second handle 23.

[0038] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment, it is not intended to limit the present invention. Any technician familiar with the present profession can make some changes or modifications to equivalent embodiments of the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A vaginal dilator, characterized in that: Includes: an upper support member, wherein a first handle portion extends downwardly from the upper support member; A lower support member is pivotally connected to the upper support member and extends a second handle downward. The second handle is located on one side of the first handle. The second handle includes a first side surface, a second side surface, a limiting groove, and a rod hole. The first side surface is away from the first handle, and the second side surface is adjacent to the first handle. The limiting groove includes an embedding groove and a plurality of buckle grooves. The embedding groove is recessed in the first side surface of the second handle. The end surface of the embedding groove away from the first side surface forms a distance with the second side surface. The peripheral surface has at least one embedding groove limiting surface, the multiple buckling grooves are formed at intervals on the outer periphery of the embedding groove, and form an opening on the peripheral surface of the embedding groove and communicate with the embedding groove, the end surface of each buckling groove adjacent to the first side surface of the second handle forms a spacing with the first side surface of the second handle, and each buckling groove forms an opening on the second side surface of the second handle, the rod hole passes through the second side surface of the second handle and the end surface of the embedding groove and communicates with the embedding groove, the rod hole forms a spacing with the multiple buckling grooves, and each buckling groove is separated from the rod hole by a partition wall; a screw having a head, a stem, and a plurality of protrusions; the head is embedded in the embedding groove of the limiting groove; the circumference of the head has at least one head limiting surface corresponding in position and shape to the at least one embedding groove limiting surface; the plurality of protrusions are protruded from the outer circumference of the head at intervals and respectively snap-fit ​​into the plurality of buckle grooves of the limiting groove; the stem extends from the head toward the first handle; the stem of the screw is inserted into the stem hole of the second handle and passes through the first handle; and A nut is threadedly connected to the shank of the screw and selectively abuts against the first handle.

2. The vaginal dilator according to claim 1, wherein One end of each protrusion adjacent to the rod portion of the screw rod is provided with a guide surface.

3. The vaginal dilator according to claim 2, wherein One end of each convex buckle away from the rod is flush with the end surface of the head away from the rod, and one end of each convex buckle adjacent to the rod has the same length as the end surface of the head adjacent to the rod.

4. The vaginal dilator according to any one of claims 1 to 3, wherein: The circumferential surface of the embedding groove comprises two embedding groove limiting surfaces and two embedding groove arc surfaces, the two embedding groove limiting surfaces are arranged at intervals, and the two embedding groove arc surfaces are respectively connected to the opposite ends of the two embedding groove limiting surfaces; The limiting groove has two buckle grooves, which are respectively located outside the arc surfaces of the two embedded grooves and communicate with the embedded grooves; The circumferential surface of the screw head has two head limiting surfaces and two head arc surfaces, the two head limiting surfaces respectively correspond to the positions of the two embedded groove limiting surfaces, and the two head arc surfaces respectively connect the opposite ends of the two head limiting surfaces and respectively correspond to the two embedded groove arc surfaces; and The screw rod has two convex buckles, which are respectively convexly arranged on the two arc surfaces of the head parts and respectively buckled in the two buckle grooves.

5. The vaginal dilator according to claim 4, wherein The circumscribed circle diameter of the rod hole is smaller than the circumscribed circle diameter of the embedding groove. The first handle is provided with a through hole. The rod of the screw passes through the rod hole of the second handle and the through hole of the first handle and then passes out of the first handle.

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