Variable cervical dilator

Abstract

The utility model discloses a variable cervical dilator, which relates to the technical field of medical instruments and comprises a handle and a retainer, the handle is positioned at the bottom end inside the retainer, the outer wall of the top of the handle is fixedly connected with the bottom end inside the retainer, and a group of corresponding sliding frames are slidably connected to the center inside the retainer simultaneously. When a doctor puts the arc-shaped expansion arms into a proper position, the adjusting knob is pulled towards the outer side of the holding frame, and after a groove in one end of the interior of the adjusting knob is separated from the holding limiting block, the arc-shaped expansion arms are fixed to the two sides of the inner wall of the holding frame, so that the arc-shaped expansion arms are fixed to the two sides of the outer wall of the holding frame, and the arc-shaped expansion arms are fixed to the two sides of the outer wall of the holding frame. The adjusting knob is rotated, the multiple arc-shaped expansion arms are driven by the synchronous belt to expand outwards, after the cervix uteri is expanded to a certain amplitude through the arc-shaped expansion arms, the adjusting knob can be pushed, and the adjusting limiting wheel is limited, so that when a doctor operates the device, the expansion amplitude of the cervix uteri can be accurately adjusted, and the arc-shaped expansion arms are locked.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically a variable cervical dilator. Background Technology

[0002] A cervical dilator is a medical device used in gynecological surgery. It is mainly used to dilate the cervix to facilitate surgery or examination. It can reduce patient pain, lower the risk of infection, and improve surgical efficiency and accuracy. By gradually dilating the cervix, the cervical dilator creates favorable conditions for the entry of surgical instruments, thereby helping doctors to successfully complete the surgical procedure while protecting the patient's health.

[0003] Currently available cervical dilators mainly consist of a set of opposing arc-shaped dilators. During operation, the doctor needs to slowly insert the closed arc-shaped dilator into the cervix, then gently squeeze the handle to slowly open the set of arc-shaped dilators, gradually dilating the cervix. While existing devices can dilate the cervix relatively quickly, the degree of dilation is always linked to the state of the handle. This requires the surgeon to maintain a constant pressure on the handle without being able to relax, making it difficult to precisely control the degree of dilation. Furthermore, the constant tension in the surgeon's hand negatively impacts the accuracy and efficiency of the surgery, and may even increase surgical risks. Therefore, we provide a variable cervical dilator. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a variable cervical dilator.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a variable cervical dilator, comprising a handle and a retainer. The handle is located at the bottom of the retainer, and the top outer wall of the handle is fixedly connected to the bottom of the retainer. A set of corresponding sliding frames is slidably connected to the center of the retainer. An arc-shaped dilator arm is fixedly connected to one side of each sliding frame. Both sides of the outer wall of the sliding frame are penetratingly connected to both sides of the inner wall of the retainer, and both sides of the outer wall of the sliding frame are slidably connected to both sides of the inside of the retainer. The arc-shaped dilator arm is slidably connected to the center of the retainer through the sliding frame. A belt limiting wheel is rotatably connected to the top of the retainer, and an adjusting limiting wheel is rotatably connected to the bottom of the retainer. The adjusting limiting wheel is located at the center of the bottom of the belt limiting wheel. A synchronous belt is sleeved on the outer wall of both the belt limiting wheel and the adjusting limiting wheel.

[0006] As mentioned above, the outer wall of the arc-shaped expansion arm is covered with a flexible material, which is mainly composed of medical-grade silicone and polyurethane.

[0007] As described above, both sides of the inner side of the retainer are fixedly connected to sliding limit rails, and the sliding limit rails are located on both sides of the inner side of the sliding frame. The center of the outer wall of the sliding limit rail is connected through to one side of the inner side of the sliding frame, and the one side of the inner side of the sliding frame is slidably connected to the center of the outer wall of the sliding limit rail.

[0008] As mentioned above, the sliding limit rails are located on both sides of the outer side of the arc-shaped expansion arm, and the arc-shaped expansion arm is slidably connected to the center of the cage through the sliding limit rails and the sliding frame.

[0009] As described above, a synchronous connecting block is fixedly connected to one side of the outer wall of the sliding frame, and the inner side of the synchronous connecting block is fixedly connected to one side of the outer wall of the synchronous belt. A retaining limit block is fixedly connected to one side of the bottom of the retaining frame, and the retaining limit block is located at the center inside the adjusting limit wheel.

[0010] As described above, multiple limiting synchronization blocks are fixedly connected to the inner edge of the adjusting limit wheel, and an adjusting knob is slidably connected to the inner center of the adjusting limit wheel through the limiting synchronization blocks. The retaining limit block is located at one end inside the adjusting knob, and the outer wall of the retaining limit block away from the retainer is in contact with the inner wall of the adjusting knob.

[0011] As described above, the limiting synchronization blocks are located at one end inside the adjusting knob, and the adjusting knob is slidably connected to the center of the adjusting limiting wheel through the limiting synchronization blocks. The outer wall of one end of the limiting synchronization block is connected through to the outer wall of one side of the adjusting knob, and the inner side of the adjusting knob is connected to the outer wall of one side of the limiting synchronization block.

[0012] Compared with existing technologies, this variable cervical dilator has the following advantages:

[0013] I. This utility model significantly improves patient comfort and reduces friction damage to the cervix and vaginal walls by covering the outer wall of the arc-shaped dilator with flexible material. It also prevents the hard outer wall of the arc-shaped dilator from directly contacting the cervix and vaginal walls, thus avoiding discomfort. Multiple sliding limit rails are fixed to the inner sides of the retainer, and their outer walls are inserted into the inner sides of the sliding frame. The inner side of the sliding frame slides against the center of the outer wall of the sliding limit rail, restricting the sliding trajectory of the sliding frame. By fixing the inner side of the sliding frame to the outer wall of the arc-shaped dilator, when the sliding limit rail moves and limits the sliding frame, it simultaneously restricts the movement trajectory of the arc-shaped dilator, ensuring that the arc-shaped dilator can only slide along the sliding limit rail under the combined action of the sliding frame and the sliding limit rail.

[0014] II. Before performing surgery or examination on a patient, the arc-shaped dilator arm needs to be slowly inserted into the patient's cervix. By fixing the synchronous connecting block to the outer wall of the sliding frame and connecting it to both sides of the inner wall of the synchronous belt, when the synchronous belt rotates, it drives the sliding frame to slide along the sliding limit rail towards the center or both ends of the retainer. The adjustment knob is slidably connected to the adjustment limit wheel via a limiting synchronization block. When the adjustment knob slides and separates from the retaining limit block, it can drive the adjustment limit wheel to rotate. When the adjustment knob is pushed and embedded in the retaining limit block, the retainer limits the adjustment knob and the adjustment limit wheel through the retaining limit block, preventing them from rotating freely. After the doctor inserts the arc-shaped dilator arm into the appropriate position, he pulls the adjustment knob outward from the retainer, causing the groove at one end of the adjustment knob to separate from the retaining limit block. Then, he rotates the adjustment knob, which drives multiple arc-shaped dilators to open outward along the outer wall of the sliding limit rail via the synchronization belt. After the cervix is ​​dilated to a certain extent by the arc-shaped dilators, the adjustment knob can be pushed to embed the retaining limit block into itself and limit the adjustment limit wheel. This allows the doctor to accurately adjust the dilation range of the cervix and lock the arc-shaped dilators when operating this device.

[0015] Other advantages, objectives and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be taught from the practice of this invention. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a partial cross-sectional three-dimensional structural diagram of the arc-shaped expansion arm and flexible material of this utility model;

[0018] Figure 3 This is a partial three-dimensional structural diagram of the retainer and sliding frame of this utility model;

[0019] Figure 4 This is a partial three-dimensional diagram of the sliding limit rail of this utility model, as well as a partially enlarged three-dimensional structural diagram of the adjusting limit wheel, the synchronous belt, and the adjusting knob.

[0020] Figure 5 This is a partially enlarged three-dimensional structural diagram of the retainer, adjusting limit wheel, synchronous belt and adjusting knob of this utility model;

[0021] Figure 6 This is a partial three-dimensional structural diagram of the synchronous belt and synchronous connecting block of this utility model;

[0022] Figure 7This is a partial three-dimensional view of the retainer and a partial cross-sectional three-dimensional view of the adjustment knob of this utility model;

[0023] Figure 8 This is a partially exploded three-dimensional structural diagram of the adjusting limit wheel, holding limit block, limit synchronization block and adjusting knob of this utility model.

[0024] In the diagram: 1. Handle; 2. Cage; 201. Sliding frame; 202. Arc-shaped expansion arm; 203. Flexible material; 204. Sliding limit rail; 3. Belt limit wheel; 301. Adjustable limit wheel; 302. Synchronous belt; 303. Synchronous connecting block; 304. Holding limit block; 305. Limiting synchronization block; 306. Adjusting knob. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] like Figure 1-8 As shown, this utility model provides a technical solution: a variable cervical dilator, including a handle 1 and a retainer 2. The handle 1 is located at the bottom of the inside of the retainer 2, and the top outer wall of the handle 1 is fixedly connected to the bottom of the inside of the retainer 2. A set of corresponding sliding frames 201 are slidably connected to the center of the inside of the retainer 2, and an arc-shaped dilator arm 202 is fixedly connected to one side of the inside of each sliding frame 201. The two sides of the outer wall of the sliding frame 201 are connected through to the two sides of the inner wall of the retainer 2, and the two sides of the outer wall of the sliding frame 201 are slidably connected to the two sides of the inside of the retainer 2. The arc-shaped dilator arm 202 is slidably connected to the center of the inside of the retainer 2 through the sliding frame 201. A belt limiting wheel 3 is rotatably connected to the top of the retainer 2, and an adjusting limiting wheel 301 is rotatably connected to the bottom of the retainer 2. The adjusting limiting wheel 301 is located at the bottom center of the belt limiting wheel 3. A synchronous belt 302 is sleeved on the outer wall of both the belt limiting wheel 3 and the adjusting limiting wheel 301.

[0027] By covering the outer wall of the arc-shaped dilator arm 202 with flexible material 203, patient comfort can be significantly improved, friction damage to the cervix and vaginal wall can be reduced, and the hard outer wall of the arc-shaped dilator arm 202 can be prevented from directly contacting the cervix and vaginal wall, thus avoiding discomfort. Before performing surgery or examination, the doctor needs to slowly insert the arc-shaped dilator arm 202 into the patient's cervix. By fixing the synchronous connecting block 303 to the outer wall of the sliding frame 201 and connecting it to both sides of the inner wall of the synchronous belt 302, when the synchronous belt 302 rotates, it drives the sliding frame 201 to slide along the sliding limit rail 204 towards the center or both ends of the retainer 2. The adjusting knob 306 is slidably connected to the adjusting limit wheel 301 through the limiting synchronous block 305. When the adjusting knob 306 slides and separates from the retaining limit block 304, it can drive the adjusting limit wheel 301 to rotate. When the adjustment knob 306 is pushed and embedded in the retaining limit block 304, the retainer 2 limits the adjustment knob 306 and the adjustment limit wheel 301 through the retaining limit block 304, preventing them from rotating freely. Then, after the doctor inserts the arc-shaped dilator arm 202 into the appropriate position, he pulls the adjustment knob 306 outward from the retainer 2, causing the groove at one end of the adjustment knob 306 to separate from the retaining limit block 304. Then, the adjustment knob 306 is rotated, and the synchronous belt 302 drives multiple arc-shaped dilators 202 to open outward along the outer wall of the sliding limit rail 204. After the cervix is ​​dilated to a certain extent by the arc-shaped dilators 202, the adjustment knob 306 can be pushed to embed the retaining limit block 304 into itself and limit the adjustment limit wheel 301. This allows the doctor to accurately adjust the dilation range of the cervix and lock the arc-shaped dilator arm 202 when operating this device.

[0028] like Figure 1-6 As shown, the outer wall of the arc-shaped dilator 202 is covered with a flexible material 203, which is mainly composed of medical-grade silicone and polyurethane. By covering the outer wall of the arc-shaped dilator 202 with the flexible material 203, the patient's comfort can be significantly improved, friction damage to the cervix and vaginal wall can be reduced, and the hard outer wall of the arc-shaped dilator 202 can be prevented from directly contacting the cervix and vaginal wall, thus avoiding discomfort.

[0029] Both sides of the cage 2 are fixedly connected to sliding limit rails 204, and the sliding limit rails 204 are located on both sides of the sliding frame 201. The center of the outer wall of the sliding limit rail 204 is connected through to one side of the sliding frame 201, and the one side of the sliding frame 201 is slidably connected to the center of the outer wall of the sliding limit rail 204. By fixing multiple sliding limit rails 204 to both sides of the cage 2 and inserting the outer walls of multiple sliding limit rails 204 through both sides of the sliding frame 201, the outer walls of the sliding limit rails 204 restrict the sliding trajectory of the sliding frame 201 by sliding between the one side of the sliding frame 201 and the center of the outer wall of the sliding limit rail 204.

[0030] The sliding limit rails 204 are located on both sides of the outer side of the arc-shaped expansion arm 202. The arc-shaped expansion arm 202 is slidably connected to the inner center of the retainer 2 through the sliding limit rails 204 and the sliding frame 201. By fixing one side of the inner side of the sliding frame 201 to the outer wall of the arc-shaped expansion arm 202, when the sliding limit rails 204 limit the movement of the sliding frame 201, the sliding limit rails 204 can simultaneously restrict the movement trajectory of the arc-shaped expansion arm 202, so that the arc-shaped expansion arm 202 can only slide along the sliding limit rails 204 under the combined action of the sliding frame 201 and the sliding limit rails 204.

[0031] like Figure 1-8 As shown, a synchronous connecting block 303 is fixedly connected to one side of the outer wall of each sliding frame 201, and the inner side of the synchronous connecting block 303 is fixedly connected to one side of the outer wall of the synchronous belt 302. By fixing a set of opposing synchronous connecting blocks 303 to the outer walls of multiple sliding frames 201 respectively, and fixing synchronous connecting blocks 303 with different orientations to both sides of the inner wall of the synchronous belt 302 respectively, when the synchronous belt 302 rotates, it cooperates with the sliding limit rail 204 to drive multiple sliding frames 201 to slide simultaneously along the outer wall of the sliding limit rail 204 towards the inner center or both inner ends of the retainer 2.

[0032] A retaining limit block 304 is fixedly connected to one side of the bottom of the retainer 2, and the retaining limit block 304 is located inside the center of the adjusting limit wheel 301. The retaining limit block 304 is placed inside the center of the adjusting limit wheel 301, so that the adjusting knob 306 can drive the adjusting limit wheel 301 to rotate, and at the same time, the retaining limit block 304 can be embedded into one end of the adjusting knob 306.

[0033] Multiple limiting synchronization blocks 305 are fixedly connected to the inner edge of the adjusting limit wheel 301, and an adjusting knob 306 is slidably connected to the inner center of the adjusting limit wheel 301 through the limiting synchronization blocks 305. By fixing multiple limiting synchronization blocks 305 to the inner edge of the adjusting limit wheel 301, the inner center of the adjusting limit wheel 301 can be slidably connected to the adjusting knob 306 through the limiting synchronization blocks 305.

[0034] The retaining limit block 304 is located inside one end of the adjusting knob 306, and the outer wall of the retaining limit block 304 away from the retainer 2 is in contact with the inner wall of the adjusting knob 306. By embedding the retaining limit block 304 into one end of the adjusting knob 306, when the adjusting knob 306 slides along the outer wall of the limiting synchronization block 305 and separates from the retaining limit block 304, the adjusting knob 306 can drive the adjusting limit wheel 301 to rotate through the limiting synchronization block 305.

[0035] The limiting synchronization blocks 305 are located at one end inside the adjusting knob 306, and the adjusting knob 306 is slidably connected to the center of the adjusting limiting wheel 301 through the limiting synchronization blocks 305. After fixing multiple limiting synchronization blocks 305 inside the adjusting limiting wheel 301, one side of the outer wall of the limiting synchronization blocks 305 is inserted and connected to one side of the inside of the adjusting knob 306, and they slide against each other, so that the adjusting knob 306 and the adjusting limiting wheel 301 can only slide against each other and cannot rotate. When the adjusting knob 306 rotates, the adjusting limiting wheel 301 can be driven to rotate through the limiting synchronization blocks 305.

[0036] One end of the outer wall of the limiting synchronization block 305 is connected to one side of the outer wall of the adjusting knob 306, and one side of the inside of the adjusting knob 306 is connected to one side of the outer wall of the limiting synchronization block 305. When the outer wall of the adjusting knob 306 is pushed and moved along the outer wall of the limiting synchronization block 305, and the retaining limiting block 304 is embedded in one end of its own interior, the retainer 2 can limit the adjusting knob 306 and the adjusting limiting wheel 301 through the retaining limiting block 304, so that they can no longer rotate freely. Then, when the doctor inserts the arc-shaped dilator arm 202 into the appropriate position, the adjusting knob 306 is moved towards the retaining limit block 304. Pulling the outer side of frame 2 separates the groove at one end of the adjustment knob 306 from the retaining limit block 304. Rotating the adjustment knob 306 drives multiple arc-shaped dilators 202 to open outward along the outer wall of the sliding limit rail 204 via the synchronous belt 302. After the cervix is ​​dilated to a certain extent by the arc-shaped dilators 202, the adjustment knob 306 can be pushed to embed the retaining limit block 304 into itself and limit the adjustment limit wheel 301. This allows the doctor to accurately adjust the dilation range of the cervix and lock the arc-shaped dilators 202 when operating the device.

[0037] Working principle: By covering the outer wall of the arc-shaped dilator arm 202 with flexible material 203, patient comfort can be significantly improved, friction damage to the cervix and vaginal wall can be reduced, and the hard outer wall of the arc-shaped dilator arm 202 can be prevented from directly contacting the cervix and vaginal wall, thus avoiding discomfort. Multiple sliding limit rails 204 are fixed to the inner sides of the retainer 2, and the outer walls of the multiple sliding limit rails 204 are inserted into the inner sides of the sliding frame 201. The sliding of the inner side of the sliding frame 201 relative to the center of the outer wall of the sliding limit rail 204 restricts the sliding trajectory of the sliding frame 201. The outer wall is fixed. When the sliding limit rail 204 moves and limits the sliding frame 201, the sliding limit rail 204 can simultaneously restrict the movement trajectory of the arc-shaped dilator 202, so that the arc-shaped dilator 202 can only slide along the sliding limit rail 204 under the combined action of the sliding frame 201 and the sliding limit rail 204. Before the doctor performs surgery or examination on the patient, the arc-shaped dilator 202 needs to be slowly inserted into the patient's cervix. By fixing the synchronous connecting block 303 to the outer wall of the sliding frame 201 and connecting it to both sides of the inner wall of the synchronous belt 302, when the synchronous belt 302 rotates, it drives the sliding frame 201 to slide along the sliding limit rail 204 towards the center or both ends of the retainer 2. The adjustment knob 306 is slidably connected to the adjustment limit wheel 301 through the limit synchronization block 305. When the adjustment knob 306 slides and separates from the retaining limit block 304, it can drive the adjustment limit wheel 301 to rotate. When the adjustment knob 306 is pushed and embedded in the retaining limit block 304, the retainer 2 limits the adjustment knob 306 and the adjustment limit wheel 301 through the retaining limit block 304, so that they cannot rotate freely.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A variable cervical dilator, comprising a handle (1) and a retainer (2), characterized in that: The handle (1) is located at the bottom inside the retainer (2), and the top outer wall of the handle (1) is fixedly connected to the bottom inside the retainer (2). A set of corresponding sliding frames (201) is slidably connected to the center inside the retainer (2), and an arc-shaped expansion arm (202) is fixedly connected to one side inside each sliding frame (201). Both sides of the outer wall of the sliding frame (201) are connected through to both sides of the inner wall of the retainer (2), and both sides of the outer wall of the sliding frame (201) are connected through to both sides of the inner wall of the retainer (2). The two sides of the part are slidably connected. The arc-shaped expansion arm (202) is slidably connected to the center of the inner part of the retainer (2) through the sliding frame (201). A belt limit wheel (3) is rotatably connected to the top side of the retainer (2). An adjustment limit wheel (301) is rotatably connected to the bottom side of the retainer (2). The adjustment limit wheel (301) is located at the bottom center of the belt limit wheel (3). A synchronous belt (302) is sleeved on the outer wall of both the belt limit wheel (3) and the adjustment limit wheel (301).

2. The variable cervical dilator according to claim 1, characterized in that: The outer wall of the arc-shaped expansion arm (202) is covered with a flexible material (203), and the flexible material (203) is mainly composed of medical-grade silicone and polyurethane.

3. A variable cervical dilator according to claim 1, characterized in that: The retainer (2) has sliding limit rails (204) fixedly connected to both sides inside, and the sliding limit rails (204) are located inside both sides of the sliding frame (201). The center of the outer wall of the sliding limit rail (204) is connected through to one side inside the sliding frame (201), and the one side inside the sliding frame (201) is slidably connected to the center of the outer wall of the sliding limit rail (204).

4. A variable cervical dilator according to claim 3, characterized in that: The sliding limit rails (204) are all located on both sides of the outside of the arc-shaped expansion arm (202), and the arc-shaped expansion arm (202) is slidably connected to the center of the cage (2) through the sliding limit rails (204) and the sliding frame (201).

5. A variable cervical dilator according to claim 1, characterized in that: One side of the outer wall of the sliding frame (201) is fixedly connected to a synchronous connecting block (303), and the inner side of the synchronous connecting block (303) is fixedly connected to the outer wall of the synchronous belt (302). One side of the bottom of the retainer (2) is fixedly connected to a retaining limit block (304), and the retaining limit block (304) is located at the center inside the adjusting limit wheel (301).

6. A variable cervical dilator according to claim 5, characterized in that: Multiple limiting synchronization blocks (305) are fixedly connected to the inner edge of the adjusting limit wheel (301), and an adjusting knob (306) is slidably connected to the center of the adjusting limit wheel (301) through the limiting synchronization block (305). The retaining limit block (304) is located at one end inside the adjusting knob (306), and the outer wall of the retaining limit block (304) away from the retainer (2) is in contact with the inner wall of the adjusting knob (306).

7. A variable cervical dilator according to claim 6, characterized in that: The limiting synchronization blocks (305) are located at one end inside the adjusting knob (306), and the adjusting knob (306) is slidably connected to the center of the adjusting limiting wheel (301) through the limiting synchronization blocks (305). The outer wall of one end of the limiting synchronization block (305) is connected through to the outer wall of one side of the adjusting knob (306), and the inner side of the adjusting knob (306) is connected to the outer wall of one side of the limiting synchronization block (305).

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