Disposable cervix dilating rod

Abstract

The utility model discloses a disposable cervix dilatation bar, which belongs to the technical field of medical instruments and comprises a dilatation bar body, the dilatation bar body comprises a holding rod and a straight tube, the outer side of the circumference of the holding rod is rotatably sleeved with the inside of the straight tube, a pushing channel is arranged in the holding rod, a moving rod is slidably mounted in the pushing channel, and the moving rod is sleeved with the straight tube. An arc-shaped opening is formed in the outer side of the circumference of the pushing channel. A medical worker manually pushes a push block, a movable rod can slide in a push channel and the circumference of a straight cylinder, an extrusion table is made to make contact with trapezoidal blocks at the bottom ends of multiple expansion pieces firstly, the push block is continuously pushed, the expansion pieces can rotate outwards through the shape of the extrusion table with the wide outer portion and the narrow inner portion, and therefore the expansion pieces can rotate outwards. The tail end of the expansion piece can support the other side of the circumference of the rubber sleeve at the same time, the effect of gradually expanding the cervical orifice is achieved, a trapezoidal block can be clamped with a tooth groove of an extrusion table, the second expansion mechanism can be kept in an expansion state, and the phenomenon that medical staff control the position of a push block for a long time, and consequently hand numbness or unstable control is caused is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a disposable cervical dilator. Background Art

[0002] There are many clinical methods for dilating the cervix, such as vaginal placement of carboprost methyl ester, oral misoprostol, and estrogen application during menopause. However, there are problems such as long drug absorption time and contraindications to estrogen application. Therefore, physical cervical dilation methods are often used to achieve the purpose of dilating the cervix. The cervical dilator is a medical device used for obstetrics and gynecology surgery or physical examination. It is widely used in clinical practice, such as in hysteroscopic surgery, placement of contraceptive rings, delivery and abortion. The cervical dilator can effectively and flexibly dilate and soften the cervical canal, shorten the operation time, and protect the patient's cervix and fetus. In addition, in the diagnosis and treatment of gynecological diseases, the entry of various laparoscopy, treatment equipment and drugs also requires dilation of the cervical opening first. In short, the cervical dilator is indispensable in obstetrics and gynecology surgery or physical examination.

[0003] After searching, the patent publication number CN217987536U discloses a patent named "A disposable cervical dilator". The technical problem to be solved is that the length of the rod entering the human body cannot be adaptively adjusted, which will cause discomfort to the patient. By adding an inner liner tube inside the dilator rod, the limit plate can be connected to the rod through the threaded hole in the inner liner tube through the bolt connection shaft to adjust the distance between the limit plate and the rod, so that the length of the rod entering the human body can be adaptively adjusted according to the actual situation of the patient, thereby reducing the patient's physical discomfort; but there are still the following drawbacks that need to be solved: but the expansion is not performed from the inside of the cervical opening, which slows down the progress of gynecological and obstetric surgery or physical examination. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and provides a disposable cervical dilator.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A disposable cervical dilator comprises a dilator body, wherein the dilator body comprises a gripping rod and a straight tube, and the outer circumferential side of the gripping rod is rotatably sleeved with the inner part of the straight tube, a pushing channel is provided inside the gripping rod, and a moving rod is slidably installed inside the pushing channel, an arc-shaped opening is provided on the outer circumferential side of the pushing channel, an extrusion platform is fixedly connected to the end of the moving rod, and a plurality of equidistant tooth grooves are provided on the outer side of the extrusion platform, a second dilator mechanism and a first dilator mechanism are fixedly installed on the end of the straight tube in sequence, and the first dilator mechanism is arc-shaped.

[0007] Preferably, a handle ring is fixedly mounted on one side of the circumference of the grip rod, and an anti-slip protrusion is provided on the circumferential outer wall of the handle ring.

[0008] Preferably, a push block is fixedly mounted on one side of the moving rod, and the push block is located inside the arc-shaped opening, both ends of the push block are rounded, and a reset elastic rod is fixedly connected between the outer wall of one side of the push block and one side of the push channel.

[0009] Preferably, a first thread is provided in the middle of the circumference of the moving rod, a second thread is provided on one side of the circumference of the straight cylinder, and the first thread matches the second thread.

[0010] Preferably, the extrusion platform is wide outside and narrow inside.

[0011] Preferably, the second expansion mechanism comprises a connecting tube and a rubber sleeve, and the rubber sleeve is located outside the circumference of the connecting tube, and two ends of the rubber sleeve are fixedly connected to the other side of the straight tube and one side of the first expansion mechanism.

[0012] Preferably, the connecting cylinder is provided with a plurality of first openings at equal angles on its circumference, and a second opening is provided at the top of each first opening, wherein the width of the second opening is smaller than the width of the first opening, and expansion plates are rotatably installed in the middle of the two ends of the second openings through torsion springs, and the expansion plates can be received in the first openings, and the top of the expansion plates are rounded, and a trapezoidal block is fixedly installed at the inner bottom end of the expansion plates, and the trapezoidal block is perpendicular to the bottom end of the expansion plates.

[0013] The beneficial effects of the utility model are:

[0014] The utility model provides a disposable cervical dilator, wherein the dilator body is composed of a grip rod and a straight tube rotatably sleeved, and the end of the straight tube is fixedly installed with a second dilator mechanism and a first dilator mechanism in sequence. When in use, the disposable cervical dilator is first inserted into the cervical opening, the arc-shaped first dilator mechanism is used to dilate the inside of the cervix, and the second dilator mechanism is used to dilate the inside of the cervical opening or the cervical opening. When the medical staff manually pushes the push block, the moving rod can slide in the pushing channel and the inside of the circumference of the straight tube, so that the extrusion platform first contacts the trapezoidal blocks at the bottom ends of the plurality of dilator sheets, The extrusion platform is wide outside and narrow inside, so that the expansion piece can rotate outward, and the end of the expansion piece can simultaneously prop up the other side of the circumference of the rubber sleeve, so as to achieve the effect of gradually expanding the cervical opening, and the trapezoidal block can be engaged with the tooth groove of the extrusion platform, so that the second expansion mechanism can maintain the expanded shape, avoiding the phenomenon of hand numbness or unstable control caused by long-term control of the position of the push block by medical staff, and the middle of the two ends of the second opening is rotatably installed with the expansion piece through a torsion spring, and after the extrusion platform retreats and leaves the interior of the connecting tube, the multiple expansion pieces are automatically reset and stored in the first opening.

[0015] The utility model proposes a disposable cervical dilator, which effectively limits the moving range of the push block by locating the push block inside the arc-shaped opening, thereby avoiding the phenomenon that the extrusion platform is difficult to retreat. The two ends of the push block are rounded to avoid scratches on the hands of medical staff. A reset elastic rod is fixedly connected between the outer wall of one side of the push block and one side of the push channel, which helps to retract the moving rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of a disposable cervical dilator proposed by the utility model;

[0017] Figure 2 This is a structural schematic diagram of a disposable cervical dilation rod moving rod proposed by the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the second expansion mechanism of a disposable cervical expansion rod proposed by the utility model;

[0019] Figure 4 The utility model is a structural schematic diagram of a disposable cervical dilator rod and dilator sheet.

[0020] In the figure: 1 expansion rod body, 2 straight cylinder, 3 second expansion mechanism, 4 first expansion mechanism, 5 grip rod, 6 handle ring, 7 push channel, 8 push block, 9 first thread, 10 arc opening, 11 reset elastic rod, 12 moving rod, 13 extrusion platform, 14 tooth groove, 15 second thread, 16 rubber sleeve, 17 connecting tube, 18 first opening, 19 second opening, 20 expansion sheet, 21 trapezoidal block. Implementation

[0021] Reference Figure 1-4 A disposable cervical dilator comprises a dilator body 1, wherein the dilator body 1 comprises a gripping rod 5 and a straight tube 2, and the gripping rod 5 is rotatably sleeved with the inside of the straight tube 2 on the outer circumference thereof, a pushing channel 7 is provided inside the gripping rod 5, and a moving rod 12 is slidably installed inside the pushing channel 7, an arc-shaped opening 10 is provided on the outer circumference of the pushing channel 7, an extrusion platform 13 is fixedly connected to the end of the moving rod 12, and a plurality of equidistant tooth grooves 14 are provided on the outer side of the extrusion platform 13, and a second dilator mechanism 3 and a first dilator mechanism 4 are fixedly installed in sequence on the end of the straight tube 2, and the first dilator mechanism 4 is arc-shaped.

[0022] In the utility model, a handle ring 6 is fixedly installed on one side of the circumference of the grip rod 5, and an anti-slip protrusion is provided on the circumferential outer wall of the handle ring 6, which effectively increases the stability of the medical staff holding the cervical dilator;

[0023] A push block 8 is fixedly installed on one side of the moving rod 12, and the push block 8 is located inside the arc-shaped opening 10. Both ends of the push block 8 are rounded. A reset elastic rod 11 is fixedly connected between the outer wall of one side of the push block 8 and one side of the push channel 7. When the medical staff manually pushes the push block 8, the moving rod 12 can slide inside the circumference of the push channel 7 and the straight cylinder 2, so that the extrusion platform 13 first contacts the trapezoidal block 21 at the bottom end of the plurality of expansion sheets 20, and continues to push the push block 8. The outer wide and inner narrow shape of the extrusion platform 13 can make the expansion sheet 20 rotate outward, and the end of the expansion sheet 20 can simultaneously support the other side of the circumference of the rubber sleeve 16, and the trapezoidal block 21 can be engaged with the tooth groove 14 of the extrusion platform 13, so that the second expansion mechanism 3 can maintain the expansion shape;

[0024] A first thread 9 is provided in the middle of the circumference of the moving rod 12, and a second thread 15 is provided on one side of the circumference of the straight cylinder 2, and the first thread 9 and the second thread 15 match each other;

[0025] The extrusion platform 13 is wide outside and narrow inside;

[0026] The second expansion mechanism 3 includes a connecting tube 17 and a rubber sleeve 16, and the rubber sleeve 16 is located outside the circumference of the connecting tube 17, and the two ends of the rubber sleeve 16 are fixedly connected to the other side of the straight tube 2 and one side of the first expansion mechanism 4;

[0027] The circumference of the connecting tube 17 is provided with a plurality of first openings 18 at equal angles, and a second opening 19 is provided at the top end of each first opening 18. The width of the second opening 19 is smaller than that of the first opening 18. An expansion piece 20 is rotatably installed in the middle of both ends of the second opening 19 through a torsion spring. The expansion piece 20 can be received in the first opening 18. The top end of the expansion piece 20 is rounded, and a trapezoidal block 21 is fixedly installed at the bottom end of the inner side of the expansion piece 20, and the trapezoidal block 21 is perpendicular to the bottom end of the expansion piece 20.

[0028] Working principle: The expansion rod body 1 is composed of a handle 5 and a straight tube 2 which are rotatably connected, and the second expansion mechanism 3 and the first expansion mechanism 4 are fixedly installed at the end of the straight tube 2 in sequence. When in use, the disposable cervical expansion rod is first inserted into the cervical opening, the arc-shaped first expansion mechanism 4 is used to expand the inside of the cervix, and the second expansion mechanism 3 is used to expand the inside of the cervical opening or the cervical opening. The medical staff manually pushes the push block 8, which allows the moving rod 12 to slide inside the push channel 7 and the circumference of the straight tube 2, so that the squeezing platform 13 first contacts the trapezoidal block 21 at the bottom of the multiple expansion sheets 20, and continues to push the push block 8. The squeezing platform The outer wide and inner narrow shape of 13 can make the expansion piece 20 rotate outward, and the end of the expansion piece 20 can simultaneously prop up the other side of the circumference of the rubber sleeve 16, so as to achieve the effect of gradually expanding the cervical opening, and the trapezoidal block 21 can be engaged with the tooth groove 14 of the extrusion platform 13, so that the second expansion mechanism 3 can maintain the expansion state, avoiding the phenomenon of hand numbness or unstable control caused by the medical staff controlling the position of the push block 8 for a long time, and the middle of the two ends of the second opening 19 is rotatably installed with the expansion piece 20 through a torsion spring, and after the extrusion platform 13 retreats and leaves the interior of the connecting tube 17, the multiple expansion pieces 20 are automatically reset and stored in the first opening 18;

[0029] By locating the push block 8 inside the arc-shaped opening 10, the movement range of the push block 8 is effectively limited, thereby avoiding the phenomenon that the extrusion platform 13 is difficult to retreat. The two ends of the push block 8 are rounded to avoid scratches on the hands of medical staff. A reset elastic rod 11 is fixedly connected between the outer wall of one side of the push block 8 and one side of the push channel 7, which helps to retract the moving rod 12.

[0030] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A disposable cervical dilator, comprising a dilator body (1), wherein the dilator body (1) comprises a gripping rod (5) and a straight tube (2), wherein the outer circumferential surface of the gripping rod (5) is rotatably sleeved with the inner surface of the straight tube (2), characterized in that: A pushing channel (7) is provided inside the gripping rod (5), and a moving rod (12) is slidably mounted inside the pushing channel (7). An arc-shaped opening (10) is provided on the outer side of the circumference of the pushing channel (7). An extrusion platform (13) is fixedly connected to the end of the moving rod (12), and a plurality of tooth grooves (14) with equal distances are provided on the outer side of the extrusion platform (13). A second expansion mechanism (3) and a first expansion mechanism (4) are fixedly mounted on the end of the straight tube (2) in sequence, and the first expansion mechanism (4) is arc-shaped.

2. A disposable cervical dilator according to claim 1, characterized in that: A handle ring (6) is fixedly mounted on one side of the circumference of the grip rod (5), and an anti-slip protrusion is provided on the circumferential outer wall of the handle ring (6).

3. A disposable cervical dilator according to claim 1, characterized in that: A push block (8) is fixedly mounted on one side of the moving rod (12), and the push block (8) is located inside the arc-shaped opening (10). Both ends of the push block (8) are rounded, and a reset elastic rod (11) is fixedly connected between the outer wall of one side of the push block (8) and one side of the push channel (7).

4. The disposable cervical dilator according to claim 1, characterized in that: A first thread (9) is provided in the middle of the circumference of the moving rod (12), and a second thread (15) is provided on one side of the circumference of the straight cylinder (2), and the first thread (9) and the second thread (15) match.

5. The disposable cervical dilator according to claim 1, characterized in that: The extrusion platform (13) is wide on the outside and narrow on the inside.

6. The disposable cervical dilator according to claim 1, characterized in that: The second expansion mechanism (3) comprises a connecting tube (17) and a rubber sleeve (16), wherein the rubber sleeve (16) is located outside the circumference of the connecting tube (17), and two ends of the rubber sleeve (16) are fixedly connected to the other side of the straight tube (2) and one side of the first expansion mechanism (4).

7. The disposable cervical dilator according to claim 6, characterized in that: The connecting tube (17) is provided with a plurality of first openings (18) at equal angles on its circumference, and a second opening (19) is provided at the top end of each first opening (18), the width of the second opening (19) being smaller than the width of the first opening (18), and expansion pieces (20) are rotatably mounted in the middle of both ends of the second opening (19) via torsion springs, the expansion pieces (20) being receivable in the first opening (18), the top end of the expansion piece (20) being rounded, and a trapezoidal block (21) being fixedly mounted on the inner bottom end of the expansion piece (20), and the trapezoidal block (21) being perpendicular to the bottom end of the expansion piece (20).

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