Vaginal speculum

Abstract

The invention discloses a vaginal speculum, and relates to the field of medical instruments. The vaginal speculum has the advantages that the field of view can be expanded better, and cervical forceps can be fixed. The vaginal dilator comprises a fixed sleeve, a movable sleeve, a vaginal dilator sheet, a connecting rod, a cervical clamp fixing structure, a front handle, a rear handle and a front handle positioning structure; the number of the vaginal dilator pieces is four, the four vaginal dilator pieces are circumferentially and evenly distributed with the axis of the fixing sleeve as the center, and the rear ends of the vaginal dilator pieces are hinged to the fixing sleeve; the connecting rods and the vaginal dilator pieces are arranged in a one-to-one correspondence mode, and the front ends and the rear ends of the connecting rods are hinged to the vaginal dilator pieces and the movable sleeve respectively. The front handle and the rear handle are respectively connected with the movable sleeve and the fixed sleeve; when the front handle moves forwards and backwards, the connecting rod can drive the vaginal dilator piece to swing inwards and outwards; the front handle positioning structure is used for limiting forward movement of the front handle; the cervical clamp fixing structure is connected with the rear end of the fixing sleeve and comprises a cervical clamp, and the cervical clamp is close to the inner wall of the fixing sleeve.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and in particular to a vaginal dilator. Background Art

[0002] Vaginal dilators are commonly used medical devices in gynecology and obstetrics. Existing vaginal dilators include a front handle, a rear handle, a front handle positioning structure and two vaginal dilator pieces. The rear ends of the two vaginal dilator pieces are hinged, and the front handle and the rear handle are respectively connected to the two vaginal dilator pieces. When in use, the two vaginal dilator pieces are first put together into a duckbill shape; after holding the rear handle to insert the two vaginal dilator pieces into the vagina, pinch the front handle to swing one vaginal dilator piece open, and open the vaginal wall, so as to perform intravaginal examination, medication and surgery.

[0003] Cervical-related surgeries and examinations using a vaginal speculum and a cervical clamp are common gynecological medical procedures. For example, during cervical conization and cervical cerclage, after the vagina is dilated with a vaginal speculum, a cervical clamp is inserted from the vaginal speculum, and the cervical clamp is used to help the doctor stabilize the cervix for precise cutting or suturing operations. During a cervical biopsy, after the vagina is dilated with a vaginal speculum, a cervical clamp is inserted from the vaginal speculum, and the cervical clamp is used to fix and pull out the cervix to ensure that tissue samples are obtained. When an intrauterine device is implanted, after the vagina is dilated with a vaginal speculum, a cervical clamp is inserted from the vaginal speculum, and the cervical clamp is used as an auxiliary tool for the implantation or removal of the intrauterine device; for example, during the implantation and removal of an intrauterine contraceptive device, a cervical clamp can be used to stabilize the cervix to help the doctor accurately place or remove the device.

[0004] In the operation and examination described in the above paragraph, the existing vaginal dilator has some disadvantages. First, the cervical clamp can only expand in two directions, and the degree of opening of the vagina is limited. In addition, the gap between the two vaginal dilator pieces is large when opening. For many patients with vaginal wall prolapse and bulging, the vaginal wall will bulge out from the gap and block the cervix. Second, the above operation requires the cooperation of two people, one person holds the vaginal dilator and the cervical clamp in both hands, and the other person performs the operation, which is relatively cumbersome. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a vaginal dilator which can better expand the visual field and fix the cervical clamp.

[0006] The technical solution adopted to solve the above problems is: the vaginal dilator includes a fixed sleeve, a movable sleeve, a vaginal dilator sheet, a connecting rod, a cervical clamp fixing structure, a front handle, a rear handle and a front handle positioning structure;

[0007] The vaginal dilator piece is arranged in front of the fixed sleeve in the front-to-back direction. There are four vaginal dilator pieces, which are evenly distributed around the circumference of the fixed sleeve axis. The rear end of the vaginal dilator piece is hinged to the fixed sleeve. The movable sleeve is mounted on the fixed sleeve. The connecting rod and the vaginal dilator piece are arranged one by one. The front and rear ends of the connecting rod are hinged to the vaginal dilator piece and the movable sleeve respectively. The front handle and the rear handle are connected to the movable sleeve and the fixed sleeve respectively. When the front handle moves forward and backward, the connecting rod can drive the vaginal dilator piece to swing inward and outward. The front handle positioning structure is used to limit the front handle from moving forward.

[0008] The cervical clamp fixing structure is connected to the rear end of the fixing sleeve. The cervical clamp fixing structure comprises a cervical clamp. The cervical clamp is close to the inner wall of the fixing sleeve and is used for clamping and fixing the cervical clamp.

[0009] Furthermore, the front end of the connecting rod is closer to the axis of the fixing sleeve, and the rear end of the connecting rod is farther from the axis of the fixing sleeve.

[0010] Furthermore, it includes a baffle, which is arranged in one-to-one correspondence with the vaginal dilator piece, and the baffle is located in front of the connecting rod and connected to the vaginal dilator piece.

[0011] Furthermore, the cervical clamp includes a U-shaped clamp body, a clamping screw, a sleeve, a clamping plate, a guide rod and an elastic retaining ring; the U-shaped clamp body includes a first side plate, a second side plate and a bottom plate; the clamping screw is perpendicular to the second side plate and is threadedly connected to the first side plate, and the end of the clamping screw is a bare rod section; the clamping plate is located in the U-shaped clamp body and is parallel to the second side plate, the sleeve is connected to the clamping plate, the sleeve is sleeved on the bare rod section, the sleeve and the bare rod section are both provided with a retaining ring groove, and the elastic retaining ring is located in the retaining ring groove of the sleeve and the bare rod section; the guide rod is parallel to the clamping screw, and there are two guide rods, which are respectively located on both sides of the clamping screw, and the guide rod passes through the first side plate and is connected to the clamping plate.

[0012] Furthermore, the second side plate and the pressing plate are both connected with rubber pads.

[0013] Furthermore, the cervical clamp fixing structure includes a slider and a fixing screw, the slider is mounted on the annular guide rail and can slide along the annular guide rail, the fixing screw is threadedly connected to the slider and can press against the annular guide rail; the cervical clamp 62 is connected to the slider 61.

[0014] Furthermore, the annular guide rail is a T-shaped guide rail or a dovetail guide rail.

[0015] Furthermore, the front handle positioning structure includes a positioning rod and a positioning nut, the positioning rod is connected to the front handle and passes through the rear handle, and the positioning nut is located behind the rear handle and is threadedly connected to the positioning rod.

[0016] The beneficial effects of the present invention are as follows: the present invention is provided with four vaginal dilator blades, the front handle moves backward, and the connecting rod can drive the vaginal dilator blades to swing outward to open the vaginal wall. The four vaginal dilator blades expand in four directions respectively, which is conducive to expanding the vagina, so that surgery or examination has a better field of view; and the gap between the vaginal dilator blades is smaller, which is conducive to reducing the amount of vaginal wall bulging into the vaginal dilator, and is also conducive to improving the field of view of surgery and examination.

[0017] The cervical clamp can clamp and fix the cervical clamp. When using the vaginal dilator and the cervical clamp for cervical-related surgery and examination, the vagina is dilated with the vaginal dilator and the cervical clamp is inserted into the vaginal dilator. The cervical clamp clamps the cervix, adjusts the position, and clamps the cervix with the cervical clamp fixing structure. In this way, the operator only needs to hold the vaginal dilator with one hand, and no longer needs to hold the cervical clamp. The other hand can perform the operation, so that a single person can perform the operation, which can reduce the number of surgical personnel and facilitate the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is the front view of the vaginal speculum;

[0019] Figure 2 This is a top view of the vaginal speculum;

[0020] Figure 3 yes Figure 1 A-direction view;

[0021] Figure 4 It is a diagram of the structure of the cervical clamp;

[0022] Figure 5 This is a diagram of the dilator in the open state;

[0023] Figure 6 This is a diagram of the state of the vaginal dilator fixing the cervical clamp;

[0024] Marked in the figure are: vaginal speculum piece 1, baffle plate 2, connecting rod 3, movable sleeve 4, fixed sleeve 5, annular guide rail 51, cervical clamp fixing structure 6, slider 61, cervical clamp 62, U-shaped clamp body 621, bottom plate 6211, first side plate 6212, second side plate 6213, clamping screw 622, bare rod section 6221, elastic retaining ring 623, sleeve 624, clamping plate 625, guide rod 626, rubber pad 627, fixing screw 63, front handle 7, rear handle 8, front handle positioning structure 9, positioning rod 91, positioning nut 92. DETAILED DESCRIPTION

[0025] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0026] like Figures 1 to 3As shown, the vaginal speculum includes a fixed sleeve 5, a movable sleeve 4, a vaginal speculum piece 1, a connecting rod 3, a cervical clamp fixing structure 6, a front handle 7, a rear handle 8 and a front handle positioning structure 9; the vaginal speculum piece 1 is arranged in front of the fixed sleeve 5 in the front-to-back direction, and the number of the vaginal speculum pieces 1 is four, and the four vaginal speculum pieces 1 are evenly distributed around the circumference of the fixed sleeve 5 axis as the center, and the rear end of the vaginal speculum piece 1 is hinged to the fixed sleeve 5; the movable sleeve 4 is sleeved on the fixed sleeve 5, and the connecting rod 3 is arranged one by one with the vaginal speculum piece 1, and the connecting rod The front and rear ends of 3 are hinged to the dilator piece 1 and the movable sleeve 4 respectively; the front handle 7 and the rear handle 8 are connected to the movable sleeve 4 and the fixed sleeve 5 respectively; when the front handle 7 moves forward and backward, the connecting rod 3 can drive the dilator piece 1 to swing inward and outward; the front handle positioning structure 9 is used to limit the forward movement of the front handle 7; the cervical clamp fixing structure 6 is connected to the rear end of the fixed sleeve 5, and the cervical clamp fixing structure 6 includes a cervical clamp 62, the cervical clamp 62 is close to the inner wall of the fixed sleeve 5, and the cervical clamp 62 is used to clamp and fix the cervical clamp.

[0027] The method of use of the present invention is roughly the same as that of the prior art. In the initial state, the movable sleeve 4 is located in the front position, each dilator sheet 1 swings inward and closes, and the front end of the dilator shrinks. Hold the rear handle 8, insert the front end of the dilator into the vagina, and then use the fingers to pull the front handle 7, so that the front handle 7 moves backward with the movable sleeve 4, and the connecting rod 3 pulls the dilator sheet 1 to swing outward, that is, to open the vagina. The dilator is in the open state as shown in FIG. Figure 5 The four vaginal dilator pieces 1 expand in four directions respectively, which is conducive to expanding the vagina, so as to provide a better field of view for surgery or examination; and the gaps between the vaginal dilator pieces 1 are smaller, which is conducive to reducing the amount of vaginal wall bulging into the vaginal dilator, and is also conducive to improving the field of view for surgery and examination.

[0028] like Figure 6 As shown, the cervical clamp 62 can clamp and fix the cervical clamp. When the vaginal dilator and the cervical clamp are used for cervical related surgery and examination, the vaginal dilator is used to expand the vagina and the cervical clamp is inserted into the vaginal dilator. The cervical clamp clamps the cervix, and the position is adjusted. The cervix is ​​clamped and fixed by the cervical clamp fixing structure 6. In this way, the operator only needs to hold the vaginal dilator with one hand, and no longer needs to hold the cervical clamp, and the other hand can perform the surgical operation, so that a single person can perform the operation, which can reduce the number of surgical personnel and facilitate the operation.

[0029] Specifically, the front ends of the vaginal dilator pieces 1 should be inclined inward, and each vaginal dilator piece 1 forms an approximately cylindrical structure when closed, and the front end is approximately conical. The movable sleeve 4 and the fixed sleeve 5 are ordinary hollow circular sleeves. The front handle 7 and the rear handle 8 are long strip structures. The front end of the connecting rod 3 is closer to the axis of the fixed sleeve 5, and the rear end of the connecting rod 3 is farther from the axis of the fixed sleeve 5. In this way, when the connecting rod 3 pulls the vaginal dilator piece 1, there is an outward component force to make the vaginal dilator piece 1 swing outward.

[0030] Preferably, the vaginal dilator includes a baffle 2, which is arranged one-to-one with the vaginal dilator sheet 1, and the baffle 2 is located in front of the connecting rod 3 and connected to the vaginal dilator sheet 1. The function of the baffle 2 is to block the connecting rod 3, prevent the connecting rod 3 and the corresponding hinged structure from contacting the patient's lower body, and have a certain protective effect on the patient.

[0031] The specific structure of the cervical clamp 62 can be as follows: the cervical clamp 62 includes a U-shaped clamp body 621, a clamping screw 622, a sleeve 624, a clamping sheet 625, a guide rod 626 and an elastic retaining ring 623; the U-shaped clamp body 621 includes a first side plate 6212, a second side plate 6213 and a bottom plate 6211; the clamping screw 622 is perpendicular to the second side plate 6213 and is threadedly connected to the first side plate 6212, and the end of the clamping screw 622 is a bare rod section 6221; the clamping sheet 625 is located in the U-shaped clamp body 621 and Parallel to the second side plate 6213, the sleeve 624 is connected to the clamping plate 625, the sleeve 624 is sleeved on the light rod section 6221, both the sleeve 624 and the light rod section 6221 have a retaining ring groove, and the elastic retaining ring 623 is located in the retaining ring groove of the sleeve 624 and the light rod section 6221; the guide rod 626 is parallel to the clamping screw 622, the number of the guide rods 626 is two, the two guide rods 626 are respectively located on both sides of the clamping screw 622, the guide rod 626 passes through the first side plate 6212 and is connected to the clamping plate 625.

[0032] After the cervical clamp clamps the cervix and adjusts the position, the rear part of the cervical clamp is placed in the U-shaped clamp body 621, the second side plate 6213 cushions the cervical clamp, and then the clamping screw 622 is tightened, the clamping screw 622 presses the clamping sheet 625, and the clamping sheet 625 compresses the cervical clamp. The guide rod 626 is provided to make the clamping sheet 625 only move linearly close to or away from the second side plate 6213 to prevent it from rotating, because if the clamping sheet 625 rotates, the cervical clamp will be driven to rotate due to friction. A sleeve 624 is provided, and the sleeve 624 is sleeved on the light rod section 6221. Both the sleeve 624 and the light rod section 6221 have a retaining ring groove, and the elastic retaining ring 623 is located in the retaining ring groove of the sleeve 624 and the light rod section 6221. The significance of such a setting is that the rotation of the clamping screw 622 cannot drive the clamping sheet 625 to rotate, and the clamping screw 622 can translate with the clamping sheet 625.

[0033] In order to improve the compression effect, preferably, the second side plate 6213 and the compression plate 625 are both connected with a rubber pad 627. The rubber pad 627 is used to increase the friction between the cervical clamp 62 and the cervical clamp.

[0034] Furthermore, the rear end of the preferred fixing sleeve 5 of the present invention has an annular guide rail 51; the cervical clamp fixing structure 6 includes a slider 61 and a fixing screw 63, the slider 61 is installed on the annular guide rail 51 and can slide along the annular guide rail 51, the fixing screw 63 is threadedly connected to the slider 61 and can tighten the annular guide rail 51; the cervical clamp 62 is connected to the slider 61.

[0035] The significance of such arrangement is that the cervical clamp fixing structure 6 can move along the annular guide rail 51 to adjust the position, thereby adjusting the position of the cervical clamp it clamps, so as to meet different needs in surgery.

[0036] The annular guide rail 51 is a T-shaped guide rail or a dovetail-shaped guide rail. That is, the cross-sectional shape of the annular guide rail 51 is T-shaped or dovetail-shaped, and the T-shaped guide rail or the dovetail-shaped guide rail are both common guide rail forms in the prior art. Correspondingly, the cross-sectional shape of the groove of the slider 61 that matches the annular guide rail 51 is also T-shaped or dovetail-shaped.

[0037] The function of the front handle positioning structure 9 is to prevent the movable sleeve 4 from moving forward when the vaginal dilator blade 1 is opened, thereby preventing the vaginal dilator blade 1 from closing. Its specific structure can be: the front handle positioning structure 9 includes a positioning rod 91 and a positioning nut 92, the positioning rod 91 is connected to the front handle 7 and passes through the rear handle 8, and the positioning nut 92 is located behind the rear handle 8 and is threadedly connected to the positioning rod 91.

[0038] By tightening the positioning nut 92 in this way, the positioning nut 92 abuts against the rear handle 8, thereby limiting the forward movement of the front handle 7 and limiting the closing of the vaginal speculum sheet 1.

[0039] The present invention is applicable to cervical related surgeries and examinations performed using a vaginal dilator and a cervical clamp as described in the background art, such as cervical conization and cervical cerclage, cervical biopsy, and intrauterine device implantation.

Claims

1. A vaginal dilator, characterized in that: It comprises a fixed sleeve (5), a movable sleeve (4), a vaginal dilator sheet (1), a connecting rod (3), a cervical clamp fixing structure (6), a front handle (7), a rear handle (8) and a front handle positioning structure (9); The vaginal dilator sheet (1) is arranged in front of the fixed sleeve (5) in the front-to-back direction. There are four vaginal dilator sheets (1). The four vaginal dilator sheets (1) are evenly distributed on a circle with the axis of the fixed sleeve (5) as the center. The rear end of the vaginal dilator sheet (1) is hinged to the fixed sleeve (5); the movable sleeve (4) is sleeved on the fixed sleeve (5), the connecting rod (3) and the vaginal dilator sheet (1) are arranged in a one-to-one correspondence, and the front and rear ends of the connecting rod (3) are respectively hinged to the vaginal dilator sheet (1) and the movable sleeve (4); the front handle (7) and the rear handle (8) are respectively connected to the movable sleeve (4) and the fixed sleeve (5); when the front handle (7) moves forward and backward, the connecting rod (3) can drive the vaginal dilator sheet (1) to swing inward and outward; the front handle positioning structure (9) is used to limit the front handle (7) from moving forward; The cervical clamp fixing structure (6) is connected to the rear end of the fixing sleeve (5). The cervical clamp fixing structure (6) comprises a cervical clamp (62). The cervical clamp (62) is close to the inner wall of the fixing sleeve (5). The cervical clamp (62) is used to clamp and fix the cervical clamp.

2. The vaginal dilator according to claim 1, characterized in that: The front end of the connecting rod (3) is closer to the axis of the fixing sleeve (5), and the rear end of the connecting rod (3) is farther from the axis of the fixing sleeve (5).

3. The vaginal dilator according to claim 2, characterized in that: It comprises a baffle (2), which is arranged in one-to-one correspondence with the vaginal dilator sheet (1); the baffle (2) is located in front of the connecting rod (3) and is connected to the vaginal dilator sheet (1).

4. The vaginal dilator according to claim 1, characterized in that: The cervical clamp (62) comprises a U-shaped clamp body (621), a clamping screw (622), a sleeve (624), a clamping plate (625), a guide rod (626) and an elastic retaining ring (623); the U-shaped clamp body (621) comprises a first side plate (6212), a second side plate (6213) and a bottom plate (6211); the clamping screw (622) is perpendicular to the second side plate (6213) and is threadedly connected to the first side plate (6212), and the end of the clamping screw (622) is a bare rod section (6221); the clamping plate (625) is located in the U-shaped clamp body (621) and is connected to the second side plate (6213). 13), the sleeve (624) is connected to the clamping plate (625), the sleeve (624) is sleeved on the light rod section (6221), both the sleeve (624) and the light rod section (6221) have a retaining ring groove, and the elastic retaining ring (623) is located in the retaining ring groove of the sleeve (624) and the light rod section (6221); the guide rod (626) is parallel to the clamping screw (622), the number of the guide rods (626) is two, the two guide rods (626) are respectively located on both sides of the clamping screw (622), and the guide rod (626) passes through the first side plate (6212) and is connected to the clamping plate (625).

5. The vaginal dilator according to claim 4, characterized in that: The second side plate (6213) and the pressing plate (625) are both connected with a rubber pad (627).

6. The vaginal dilator according to claim 5, characterized in that: The rear end of the fixing sleeve (5) is provided with an annular guide rail (51); the cervical clamp fixing structure (6) comprises a slider (61) and a fixing screw (63); the slider (61) is mounted on the annular guide rail (51) and can slide along the annular guide rail (51); the fixing screw (63) is threadedly connected to the slider (61) and can press against the annular guide rail (51); and the cervical clamp (62) is connected to the slider (61).

7. The vaginal dilator according to claim 6, characterized in that: The annular guide rail (51) is a T-shaped guide rail or a dovetail guide rail.

8. The vaginal dilator according to claim 7, characterized in that: The front handle positioning structure (9) comprises a positioning rod (91) and a positioning nut (92); the positioning rod (91) is connected to the front handle (7) and passes through the rear handle (8); the positioning nut (92) is located behind the rear handle (8) and is threadedly connected to the positioning rod (91).

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