Urinary catheter clamping and limiting device for obstetrical nursing

Abstract

The invention discloses a urinary catheter clamping and limiting device for obstetrical nursing. The urinary catheter clamping and limiting device comprises a fixed plate, a movable seat, a limiting plate, a clamping adjusting mechanism, a protective clamping mechanism, a connecting seat, a connecting rod, an angle positioning mechanism and a fixing mechanism. Through lifting adjustment of the clamping adjusting mechanism, the limiting plate can be driven to ascend and descend, and the protective clamping mechanism can be driven to synchronously operate in the lifting process of the clamping adjusting mechanism; in the process that the clamping adjusting mechanism drives the limiting plate to clamp and limit the urinary catheter, the protective clamping mechanism can conduct auxiliary clamping and limiting on the urinary catheter, and the situation that the limiting plate makes direct rigid contact with the urinary catheter, and consequently the urinary catheter is deformed and damaged is avoided; meanwhile, due to the arrangement of the protective clamping mechanism, the phenomenon that the urinary catheter is damaged due to friction between the urinary catheter and the two ends of the limiting plate when the urinary catheter is bent can be avoided, and the protective effect and the using effect of the urinary catheter clamping and limiting device for obstetrical nursing are improved.

Description

Technical Field

[0001] This invention relates to the field of obstetric nursing technology, specifically to an obstetric nursing catheter clamping and limiting device. Background Technology

[0002] Obstetrics and gynecology is one of the four major disciplines of clinical medicine. It mainly studies the etiology, pathology, diagnosis and prevention of female reproductive organ diseases, the physiological and pathological changes of pregnancy and childbirth, the prevention and treatment of high-risk pregnancy and dystocia, female reproductive endocrinology, and women's health. In obstetric nursing, urinary catheters and urine bags are used. Indwelling urinary catheterization is one of the most common and frequently used nursing procedures in clinical practice to accurately record urine volume and solve patients' difficulty in urination. During the use of urinary catheters, it is necessary to use a urinary catheter clamping and limiting device to stabilize and fix the urinary catheter, so as to prevent the urinary catheter from falling out or moving during use, which can easily cause it to bend or be compressed, thereby affecting its normal urination effect.

[0003] However, the existing obstetric nursing catheter clamping and limiting devices still have certain defects in use; A urinary catheter clamping and limiting device for obstetric care, as proposed in application number CN202310014018.6, includes a urinary tract tube. Multiple fixing components are detachably connected to the side wall of the urinary tract tube for clamping and fixing it to a hospital bed. Each fixing component includes a working tube, with a suction tube fixedly connected to its bottom. A first one-way mechanism is provided inside the suction tube. A suction cup is fixedly connected to the lower end of the suction tube, and an air outlet tube is fixedly connected to the side wall of the working tube, with a second one-way mechanism provided inside the air outlet tube. This urinary catheter clamping and limiting device for obstetric care facilitates clamping and fixing the urinary tract tube to the hospital bed, ensuring a tighter adhesion and preventing loosening. This guarantees a secure fixation, preventing the urinary tract tube from scattering or moving during use, avoiding bending or compression, and ensuring normal urination. It is also easy to disassemble and allows adjustment of the clamping angle according to usage needs, making it more convenient to use. However, in actual use, the following problems still exist: This obstetric nursing catheter clamping and limiting device uses the action of a fourth spring to quickly clamp and limit the catheter with two arc-shaped clamps. However, during this clamping and limiting process, the arc-shaped clamps and the catheter are in direct rigid contact, which makes the catheter prone to deformation and damage, affecting the catheter's catheterization effect. At the same time, when the catheter is bent, the two ends of the arc-shaped clamps are also prone to friction with the bend of the catheter, which can easily cause damage to the catheter. The obstetric nursing urinary catheter clamping and limiting device uses the suction between the suction cup and the bed to fix the entire device. However, the suction cup fixing method is easily affected by the flatness of the fixing surface, which causes the existing obstetric nursing urinary catheter clamping and limiting device to fall off, reducing the positioning and installation stability of the existing obstetric nursing urinary catheter clamping and limiting device.

[0004] In view of this, in-depth research was conducted on the above issues, which led to the creation of this case.

[0005] To address the aforementioned issues, an innovative design was developed based on the existing obstetric nursing catheter clamping and limiting device. Summary of the Invention

[0006] The purpose of this invention is to provide a urinary catheter clamping and limiting device for obstetric care, in order to solve the problems mentioned in the background art, such as the rigid contact between the existing urinary catheter clamping and limiting device and the urinary catheter, which easily leads to deformation and wear of the urinary catheter, and the inconvenience of stable installation of the existing urinary catheter clamping and limiting device.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a urinary catheter clamping and limiting device for obstetric care, comprising a fixed plate, a movable seat, a limiting plate, a clamping adjustment mechanism, a protective clamping mechanism, a connecting seat, a connecting rod, an angle positioning mechanism, and a fixing mechanism. The fixed plate has a sliding groove inside, and a positioning rod is fixedly installed inside the sliding groove. A movable seat is slidably connected to the surface of the positioning rod. A limit plate is fixedly installed at one end of the movable seat. A clamping adjustment mechanism is connected to the limit plate and is fixedly connected to the fixed plate. A protective clamping mechanism is installed on the limiting plate, and the protective clamping mechanism is connected to the clamping adjustment mechanism. A connecting seat is fixedly installed on one side of the fixing plate, a positioning ring is fixedly installed in the middle of the connecting seat, a connecting rod is fitted inside the positioning ring, a fixing shaft is installed at one end of the connecting rod, and the fixing shaft is connected to the positioning ring; The connecting rod is connected to the positioning ring via an angle positioning mechanism; A positioning plate is fixedly installed at one end of the connecting rod, and a fixing mechanism is installed on one side of the positioning plate.

[0008] Preferably, the positioning rods are symmetrically distributed inside the slide groove, and the limiting plate is slidably connected to the slide groove and the positioning rods respectively through the movable seat.

[0009] By adopting the above technical solution, the positioning rod and the slide groove can limit the lifting and sliding of the limiting plate through the movable seat, which helps to avoid the shaking of the limiting plate during the lifting and adjusting process and improves the stability of the limiting plate in clamping and limiting the urine tube.

[0010] Preferably, the clamping adjustment mechanism includes a connecting shaft, the connecting shaft is mounted on the surface of the limiting plate, one end of the connecting shaft is connected to an adjusting screw, a fixing seat is sleeved on the surface of the adjusting screw, a connecting groove is provided inside the fixing seat, the connecting groove is connected to the adjusting screw, and an anti-slip knob is fixedly installed on the top end of the adjusting screw.

[0011] By adopting the above technical solution, it is convenient to clamp and limit the urinary catheter and disassemble it by adjusting the clamping and limiting mechanism, which improves the convenience of the urinary catheter clamping and limiting operation of the obstetric nursing urinary catheter clamping and limiting device, and at the same time improves the use effect of the obstetric nursing urinary catheter clamping and limiting device.

[0012] Preferably, the adjusting screw is connected to the bearing of the limiting plate via a connecting shaft, and the adjusting screw is threadedly connected to the fixed seat via a connecting groove.

[0013] By adopting the above technical solution, the adjusting screw can be raised and lowered and positioned inside the fixed seat through the connecting groove, and the connecting shaft can drive the limiting plate to move up and down stably. This makes it easier to control the limiting plate to clamp and limit the urine tube, thus improving the ease of use of the clamping and adjusting mechanism.

[0014] Preferably, the protective clamping mechanism includes a clamping airbag, the clamping airbag is installed on the inner side of the limiting plate, the clamping airbag is symmetrically installed with connecting valves, one end of the connecting valve is connected to a connecting pipe, one end of the connecting pipe is connected to a compressed air pump, the bottom end of the compressed air pump is fixedly connected to a fixed base, the top end of the compressed air pump is installed with a linkage plate, and one end of the linkage plate is rotatably connected to an anti-slip knob.

[0015] By adopting the above technical solution, it is easy to control the expansion and contraction of the clamping mechanism through the adjustment of the clamping adjustment mechanism. This facilitates the addition of a flexible protective structure between the limiting plate and the urinary catheter, avoiding rigid contact between the two during the clamping and limiting process of the urinary catheter, which would cause deformation and wear of the urinary catheter. This improves the protective effect of the obstetric nursing urinary catheter clamping and limiting device.

[0016] Preferably, the angle positioning mechanism includes a limiting groove, the connecting rod has a limiting groove inside, a button seat is slidably connected inside the limiting groove, a return spring is installed at equal intervals between the button seat and the limiting groove, a buckle is fixedly installed at one end of the button seat, the buckle is slidably connected to the limiting groove, and the inner ring of the positioning ring has a slot, which engages with the buckle.

[0017] By adopting the above technical solution, it is convenient to adjust the angles of the positioning ring, connecting seat and fixing plate by controlling the angle adjustment mechanism, which in turn facilitates the adjustment of the clamping and limiting direction of the clamping adjustment mechanism and the protective clamping mechanism, thus improving the convenience of angle adjustment of the obstetric nursing urinary catheter clamping and limiting device.

[0018] Preferably, the button seat and the buckle form a telescopic structure with the limit groove through the reset spring, and the buckle is opened at an equal angle on the inner ring of the positioning ring.

[0019] By adopting the above technical solution, it is easy for the reset spring to push the button seat and the buckle to engage with the slots at different angles. This facilitates the positioning of the obstetric nursing urinary catheter clamping and limiting device in different clamping directions when engaging with slots at different angles, thereby improving the angle adjustment stability of the obstetric nursing urinary catheter clamping and limiting device.

[0020] Preferably, the fixing mechanism includes a positioning seat, with the positioning seat symmetrically installed on one side of the positioning plate. The positioning seat has an inner groove, and a telescopic screw is slidably connected inside the inner groove. A limit ring is fixedly installed at one end of the telescopic screw, and a telescopic spring is connected between the limit ring and the positioning seat. The telescopic spring is sleeved with the telescopic screw, and a positioning nut is threaded onto the telescopic screw. A movable clamping plate is fixedly installed at the other end of the telescopic spring, and a groove is opened inside the movable clamping plate.

[0021] By adopting the above technical solution, the obstetric nursing urinary catheter clamping and limiting device can be fixedly installed in a suitable position on the hospital bed through a fixing mechanism, which reduces the restriction on the fixing position of the obstetric nursing urinary catheter clamping and limiting device and improves the adaptability of the installation and positioning of the obstetric nursing urinary catheter clamping and limiting device.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows: the obstetric nursing urinary catheter clamping and limiting device can drive the limiting plate to rise and fall by adjusting the clamping adjustment mechanism. During the lifting and lowering process of the clamping adjustment mechanism, the protective clamping mechanism will also operate synchronously. This is beneficial for the protective clamping mechanism to assist in clamping and limiting the urinary catheter while the clamping adjustment mechanism drives the limiting plate to clamp and limit the urinary catheter, thus avoiding the deformation and damage of the urinary catheter caused by direct rigid contact between the limiting plate and the urinary catheter. At the same time, the setting of the protective clamping mechanism can prevent the urinary catheter from being damaged by friction between the two ends of the limiting plate when it is bent. This improves the protective effect and the use effect of the obstetric nursing urinary catheter clamping and limiting device. The fixing mechanism allows the obstetric nursing urinary catheter clamping and limiting device to be clamped and installed on the bed railing, improving the ease of installation and stability of the device. Simultaneously, rotating the fixing plate causes the connecting seat and positioning ring to rotate on the connecting rod, facilitating the adjustment of the urinary catheter's direction within the device. Combined with the adjustment of the angle positioning mechanism, this facilitates accurate positioning after angle adjustment, further enhancing the ease of use of the obstetric nursing urinary catheter clamping and limiting device. Attached Figure Description

[0023] Figure 1 This is a side view of the external structure of the present invention; Figure 2 This is a schematic diagram of the connection structure between the fixing plate and the limiting plate of the present invention; Figure 3 This is a schematic diagram of the connection structure between the clamping adjustment mechanism and the protective clamping mechanism of the present invention; Figure 4 This is a side sectional view of the protective clamping mechanism of the present invention; Figure 5 This is a side sectional view of the angle positioning mechanism of the present invention; Figure 6 This is a schematic diagram of the card slot distribution structure of the present invention; Figure 7 This is a side sectional view of the fixing mechanism of the present invention; Figure 8 This is a schematic diagram of the connection structure between the telescopic screw and the positioning nut of the present invention.

[0024] In the diagram: 1. Fixed plate; 2. Slide groove; 3. Positioning rod; 4. Movable seat; 5. Limiting plate; 6. Clamping adjustment mechanism; 601. Connecting shaft; 602. Adjusting screw; 603. Fixed seat; 604. Connecting groove; 605. Anti-slip knob; 7. Protective clamping mechanism; 701. Clamping airbag; 702. Connecting valve; 703. Connecting pipe; 704. Compressed air pump; 705. Linkage plate; 8. Connecting seat; 9. Positioning ring; 10. Connection 11. Rod; 12. Fixed shaft; 13. Angle positioning mechanism; 14. Limiting groove; 15. Button seat; 16. Return spring; 17. Buckle; 18. Slot; 19. Positioning plate; 10. Fixing mechanism; 11. Positioning seat; 12. Inner groove; 13. Telescopic screw; 14. Limiting ring; 15. Telescopic spring; 16. Positioning nut; 17. Movable clamping plate; 18. Groove. Detailed Implementation

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

[0026] Please see Figure 1-3 This invention provides a technical solution: a urinary catheter clamping and limiting device for obstetric care, comprising a fixed plate 1, a movable seat 4, a limiting plate 5, a clamping adjustment mechanism 6, a protective clamping mechanism 7, a connecting seat 8, a connecting rod 10, an angle positioning mechanism 12, and a fixing mechanism 14. The fixed plate 1 has a sliding groove 2 inside, and a positioning rod 3 is fixedly installed inside the sliding groove 2. The positioning rods 3 are symmetrically distributed inside the sliding groove 2. The movable seat 4 is slidably connected to the surface of the positioning rod 3. The limiting plate 5 is fixedly installed at one end of the movable seat 4, and the limiting plate 5 is slidably connected to the sliding groove 2 and the positioning rods 3 respectively through the movable seat 4. The clamping adjustment mechanism 6 is connected to the limiting plate 5 and is fixedly connected to the fixed plate 1. The clamping adjustment mechanism 6 includes a connecting shaft 601, and the connecting shaft 601 is installed on the surface of the limiting plate 5. One end of the connecting shaft 601 is connected to an adjusting screw 602, and the adjusting screw 602 is connected to the limiting plate 5 via the connecting shaft 601 and a bearing. A fixed seat 603 is sleeved on the surface of the adjusting screw 602. A connecting groove 604 is provided inside the fixed seat 603. The connecting groove 604 is connected to the adjusting screw 602, and the adjusting screw 602 is threadedly connected to the fixed seat 603 through the connecting groove 604. An anti-slip knob 605 is fixedly installed on the top of the adjusting screw 602. The above structure design allows the adjusting screw 602 to rotate by rotating the anti-slip knob 605, thereby causing the adjusting screw 602 to move up and down threadedly inside the fixed seat 603 through the connecting groove 604. During the threaded movement of the adjusting screw 602, the limiting plate 5 will move up and down through the connecting shaft 601. At this time, the limiting plate 5 will cause the movable seat 4 to slide and move up and down inside the slide groove 2 and on the surface of the positioning rod 3. This is beneficial for clamping and limiting the urine catheter when the two limiting plates 5 move towards each other, and also for disassembling the urine catheter when the two limiting plates 5 move in opposite directions.

[0027] Combination Figure 1-4As shown, a protective clamping mechanism 7 is installed on the limiting plate 5. The protective clamping mechanism 7 is interconnected with the clamping adjustment mechanism 6. The protective clamping mechanism 7 includes a clamping airbag 701. The clamping airbag 701 is installed on the inner side of the limiting plate 5. A connecting valve 702 is symmetrically installed on the clamping airbag 701. One end of the connecting valve 702 is connected to a connecting pipe 703. One end of the connecting pipe 703 is connected to a compressed air pump 704. The bottom end of the compressed air pump 704 is fixedly connected to the fixed base 603. A linkage plate 705 is installed on the top end of the compressed air pump 704. One end of the linkage plate 705 is rotatably connected to the anti-slip knob 605. The above means that during the threaded lifting and lowering of the anti-slip knob 605 and the adjusting screw 602, the descent of the adjusting screw 602 will synchronously drive the linkage plate 705 to descend. The descent of the linkage plate 705 compresses the air compressor 704, causing the gas inside the air compressor 704 to enter the clamping airbag 701 through the connecting pipe 703 and the connecting valve 702. This causes the clamping airbag 701 to inflate and, in conjunction with the limiting plate 5, effectively clamp and protect the urinary catheter. When the adjusting screw 602 rises and causes the limiting plate 5 to release the restriction on the urinary catheter, the rise of the adjusting screw 602 will cause the linkage plate 705 to release the compression of the air compressor 704. This causes the air compressor 704 to reset and, through the connecting pipe 703 and the connecting valve 702, extracts the gas from the clamping airbag 701, causing the clamping airbag 701 to reset as well. This adds a flexible structure to the connection between the limiting plate 5 and the urinary catheter, preventing deformation and wear of the urinary catheter.

[0028] Combination Figure 1 and Figure 5-6As shown, a connecting seat 8 is fixedly installed on one side of the fixing plate 1, and a positioning ring 9 is fixedly installed in the middle of the connecting seat 8. A connecting rod 10 is fitted inside the positioning ring 9, and a fixing shaft 11 is installed at one end of the connecting rod 10. The fixing shaft 11 is connected to the positioning ring 9. The connecting rod 10 is connected to the positioning ring 9 through an angle positioning mechanism 12. The angle positioning mechanism 12 includes a limiting groove 1201. A limiting groove 1201 is opened inside the connecting rod 10. A button seat 1202 is slidably connected inside the limiting groove 1201. A return spring 1203 is installed at equal intervals between the button seat 1202 and the limiting groove 1201. A buckle 1204 is fixedly installed at one end of the button seat 1202. The buckle 1204 is slidably connected to the limiting groove 1201. The button seat 1202 and the buckle 1204 form a telescopic structure with the limiting groove 1201 through the return spring 1203. A slot 1205 is opened in the inner ring of the positioning ring 9. Furthermore, the slot 1205 is opened at an equal angle on the inner ring of the positioning ring 9, and the slot 1205 is engaged with the buckle 1204. The above allows the buckle 1204 to retract inside the limiting groove 1201 by squeezing the button seat 1202, thereby releasing the buckle 1204 from the current slot 1205. Then, by rotating the fixing plate 1, the connecting seat 8 can be rotated, and the connecting seat 8 and the positioning ring 9 can be rotated on the connecting rod 10 through the fixing shaft 11, so as to adjust the clamping and limiting direction of the obstetric nursing urinary catheter clamping and limiting device. When the angle is appropriate, the squeezing of the button seat 1202 is released, and the return spring 1203 will push the button seat 1202 and the buckle 1204 to reset, so that the buckle 1204 engages with the slot 1205 at the corresponding angle, which is beneficial to the stable positioning of the obstetric nursing urinary catheter clamping and limiting device after the angle is adjusted.

[0029] Combination Figure 1 and Figure 7-8As shown, a positioning plate 13 is fixedly installed at one end of the connecting rod 10. A fixing mechanism 14 is installed on one side of the positioning plate 13. The fixing mechanism 14 includes a positioning seat 1401. The positioning seats 1401 are symmetrically installed on one side of the positioning plate 13. An inner groove 1402 is opened inside the positioning seat 1401. A telescopic screw 1403 is slidably connected inside the inner groove 1402. A limit ring 1404 is fixedly installed at one end of the telescopic screw 1403. A telescopic spring 1405 is connected between the limit ring 1404 and the positioning seat 1401. The telescopic spring 1405 is sleeved with the telescopic screw 1403. A positioning nut 1406 is threaded on the telescopic screw 1403. A movable clamping plate 1407 is fixedly installed at the other end of the telescopic spring 1405. A groove 1408 is opened inside the movable clamping plate 1407. The above allows the telescopic screws 1403 on both sides to slide inside the inner groove 1402 by pulling them, thereby facilitating the movement of the movable clamping plates 1403 on both sides. 7. Separation is performed, allowing the movable clamps 1407 on both sides to be fitted and connected to the bed frame. The grooves 1408 inside the movable clamps 1407 are tightly fitted and limited with the frame. At this time, the tension on the telescopic screw 1403 is released, causing the telescopic spring 1405 to pull the limiting ring 1404 and the telescopic screw 1403 to reset, and causing the movable clamps 1407 and the grooves 1408 to fit tightly with the bed frame. Then, the position of the positioning nut 1406 on the telescopic screw 1403 is adjusted by rotating it until the positioning nut 1406 fits with the positioning seat 1401. This allows for relative positioning between the telescopic screw 1403 and the positioning seat 1401, preventing the telescopic screw 1403 and the movable clamps 1407 from sliding due to the instability of the telescopic spring 1405, which would affect the connection stability with the bed frame. This improves the ease of installation and stability of the obstetric nursing urinary catheter clamping and limiting device.

[0030] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0031] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A urinary catheter clamping and limiting device for obstetric care, comprising a fixed plate (1), a movable seat (4), a limiting plate (5), a clamping adjustment mechanism (6), a protective clamping mechanism (7), a connecting seat (8), a connecting rod (10), an angle positioning mechanism (12), and a fixing mechanism (14), characterized in that: The fixed plate (1) has a sliding groove (2) inside, and a positioning rod (3) is fixedly installed inside the sliding groove (2). A movable seat (4) is slidably connected to the surface of the positioning rod (3). A limit plate (5) is fixedly installed at one end of the movable seat (4). A clamping adjustment mechanism (6) is connected to the limit plate (5). The clamping adjustment mechanism (6) is fixedly connected to the fixed plate (1). The limiting plate (5) is equipped with a protective clamping mechanism (7), which is connected to the clamping adjustment mechanism (6). A connecting seat (8) is fixedly installed on one side of the fixing plate (1), and a positioning ring (9) is fixedly installed in the middle of the connecting seat (8). A connecting rod (10) is fitted inside the positioning ring (9), and a fixing shaft (11) is installed at one end of the connecting rod (10). The fixing shaft (11) is connected to the positioning ring (9). The connecting rod (10) is connected to the positioning ring (9) through the angle positioning mechanism (12); A positioning plate (13) is fixedly installed at one end of the connecting rod (10), and a fixing mechanism (14) is installed on one side of the positioning plate (13).

2. The obstetric nursing catheter clamping and limiting device according to claim 1, characterized in that: The positioning rods (3) are symmetrically distributed inside the slide groove (2), and the limiting plate (5) is slidably connected to the slide groove (2) and the positioning rods (3) respectively through the movable seat (4).

3. The obstetric nursing catheter clamping and limiting device according to claim 1, characterized in that: The clamping adjustment mechanism (6) includes a connecting shaft (601). The connecting shaft (601) is mounted on the surface of the limiting plate (5). One end of the connecting shaft (601) is connected to an adjusting screw (602). A fixing seat (603) is sleeved on the surface of the adjusting screw (602). A connecting groove (604) is provided inside the fixing seat (603). The connecting groove (604) is connected to the adjusting screw (602). An anti-slip knob (605) is fixedly installed on the top end of the adjusting screw (602).

4. The obstetric nursing catheter clamping and limiting device according to claim 3, characterized in that: The adjusting screw (602) is connected to the bearing of the limiting plate (5) via the connecting shaft (601), and the adjusting screw (602) is threadedly connected to the fixed seat (603) via the connecting groove (604).

5. The obstetric nursing catheter clamping and limiting device according to claim 1, characterized in that: The protective clamping mechanism (7) includes a clamping airbag (701). The clamping airbag (701) is installed on the inner side of the limiting plate (5). A connecting valve (702) is symmetrically installed on the clamping airbag (701). One end of the connecting valve (702) is connected to a connecting pipe (703). One end of the connecting pipe (703) is connected to a compressed air pump (704). The bottom end of the compressed air pump (704) is fixedly connected to the fixed seat (603). A linkage plate (705) is installed on the top end of the compressed air pump (704). One end of the linkage plate (705) is rotatably connected to the anti-slip knob (605).

6. The obstetric nursing catheter clamping and limiting device according to claim 1, characterized in that: The angle positioning mechanism (12) includes a limiting groove (1201). The connecting rod (10) has a limiting groove (1201) inside. A button seat (1202) is slidably connected inside the limiting groove (1201). A return spring (1203) is installed at equal intervals between the button seat (1202) and the limiting groove (1201). A buckle (1204) is fixedly installed at one end of the button seat (1202). The buckle (1204) is slidably connected to the limiting groove (1201). The inner ring of the positioning ring (9) has a slot (1205). The slot (1205) is engaged with the buckle (1204).

7. The obstetric nursing catheter clamping and limiting device according to claim 6, characterized in that: The button base (1202) and the buckle (1204) form a telescopic structure with the limiting groove (1201) through the reset spring (1203), and the slot (1205) is opened at an equal angle in the inner ring of the positioning ring (9).

8. The obstetric nursing catheter clamping and limiting device according to claim 1, characterized in that: The fixing mechanism (14) includes a positioning seat (1401). The positioning seat (1401) is symmetrically installed on one side of the positioning plate (13). The positioning seat (1401) has an inner groove (1402) inside. The inner groove (1402) is slidably connected to a telescopic screw (1403). One end of the telescopic screw (1403) is fixedly installed with a limit ring (1404). A telescopic spring (1405) is connected between the limit ring (1404) and the positioning seat (1401). The telescopic spring (1405) is sleeved with the telescopic screw (1403). A positioning nut (1406) is threaded on the telescopic screw (1403). The other end of the telescopic spring (1405) is fixedly installed with a movable clamping plate (1407). The movable clamping plate (1407) has a groove (1408) inside.

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