Obstetric forceps for obstetrical department

Abstract

The utility model provides a pair of obstetric forceps for obstetrics, which relates to the technical field of obstetric forceps and comprises two forceps blades and two forceps handles in one-to-one correspondence, a mounting seat is fixedly connected to the inner side surface of one of the forceps handles, a connecting arm is rotatably connected in the mounting seat, and the connecting arm is fixedly connected with the forceps blades. The swinging end of the connecting arm is in a U shape, a plurality of sawtooth parts used for being meshed with the swinging end of the connecting arm are arranged on the inner side face of the other plier handle, after the two plier blades are hinged, the connecting arm swings to the movable end to abut against the sawtooth parts, the relative positions of the two plier handles can be fixed, and even if an operator holds the two plier handles forcefully, the plier blades can be fixed. Under the supporting action of the connecting arm, the two forceps handles can be ensured not to change positions due to the gripping force of an operator, so that the angle of the two forceps blades is ensured to be fixed, and a fetus is prevented from being pinched.

Description

Technical Field

[0001] The utility model relates to the technical field of obstetric forceps, in particular to an obstetric forceps for use in obstetrics. Background Art

[0002] The obstetric forceps is divided into two blades, and a space similar to the size and shape of the fetal head is formed between the two blades. The fetal head is surrounded and protected to prevent the fetal head from being squeezed. The midwife holds the forceps handle and gently pulls outwards to help deliver the fetal head.

[0003] After retrieval: An obstetric forceps in the prior art, with the publication number: CN213758492U. When in use, the clamping block is inserted into the clamping groove, and the limiting block enters the limiting groove. Then, the forceps blade is rotated so that the limiting block engages with the limiting groove, and the clamping block engages with the clamping groove, thereby firmly fixing the two forceps blades on the first forceps body and the second forceps body respectively. Medical staff can respectively pass their fingers through the two fixing sleeves, so that the two clamping rings can tightly clamp the fingers. During the operation, first place one forceps blade along the birth canal at the lower edge of the auricle on the left side of the fetal head, and then place the other forceps blade at the lower edge of the auricle on the right side of the fetal head. Fasten the first forceps handle and the second forceps handle 6 so that the two forceps blades completely enclose the fetal head. At this time, no clamping force or a slight clamping force can be applied, and the forceps is pulled with an appropriate pulling force in cooperation with uterine contractions.

[0004] However, when the prior art is in use, the clamping force of the obstetric forceps on the fetus depends on the clamping force of the operator. Therefore, once the operator holds the obstetric forceps too tightly during the process of clamping the fetal head with the obstetric forceps and pulling the obstetric forceps outwards to drive the fetus to move, it is easy to cause damage to the fetal head. Therefore, the method of installing the obstetric forceps only by hinge requires a high level of hand stability for the operator. Summary of the Utility Model

[0005] In view of the technical problem that the method of installing the obstetric forceps only by hinge in the patent mentioned in the background art requires a high level of hand stability for the operator, the utility model provides an obstetric forceps for use in obstetrics.

[0006] The technical solution adopted by the utility model is: an obstetric forceps for use in obstetrics, including two forceps blades and two corresponding forceps handles. An installation seat is fixedly connected to the inner side surface of one of the forceps handles. A connecting arm is rotatably connected inside the installation seat. The swinging end of the connecting arm is U-shaped, and a plurality of serrated parts for engaging with the swinging end of the connecting arm are provided on the inner side surface of the other forceps handle. A first worm gear is rotatably connected to the outer side wall of the installation seat. One end of the first worm gear extends outwards and is fixedly connected to the rotating part of the connecting arm while passing through the installation seat. A sliding seat is arranged on the installation seat. A first worm for meshing and driving with the first worm gear is rotatably connected inside the sliding seat.

[0007] Preferably, a part of the surface of the sliding seat is embedded and inserted on the mounting seat, and a pin shaft is connected between the sliding seat and the mounting seat.

[0008] Preferably, a connecting handle for hinging two pliers handles is connected between the pliers handle and the pliers blade. An installation groove is formed on the inner side surface of the connecting handle. A rotating frame is rotatably connected in the installation groove. A telescopic block is inserted in the rotating frame. The end surfaces of the two telescopic blocks located outside the rotating frame are inserted, and a pin shaft also penetrates through the inserted part.

[0009] Preferably, a lead screw that is in threaded connection with the side of the telescopic block in an embedded manner penetrates through the inner side wall of the rotating frame and is rotatably connected.

[0010] Preferably, the rotating part of the rotating frame extends outwards through the groove wall of the installation groove and is fixedly connected with a second worm gear. A second worm that meshes with the second worm gear is rotatably connected to the connecting handle.

[0011] Preferably, the rotating frame swings in a direction parallel to the connecting handle.

[0012] Preferably, the surface of the serrated part close to the connecting handle is perpendicular to the pliers handle, and an anti-slip pad is sleeved on the outer wall of the pliers handle.

[0013] Compared with the prior art, the advantages and positive effects of the present utility model are as follows:

[0014] 1. In the present utility model, after the two pliers blades are hinged, the relative position between the two pliers handles can be fixed by swinging the connecting arm until its movable end abuts against the serrated part. Even if the operator holds the two pliers handles forcefully, under the supporting action of the connecting arm, it can be ensured that the two pliers handles will not change their positions due to the operator's grip force, thereby ensuring the fixed angle of the two pliers blades and preventing the fetus from being pinched.

[0015] 2. In the present utility model, by rotating the second worm, the second worm gear in meshing connection drives the rotating frame at the corresponding position to swing, so that the movable ends of the two rotating frames are aligned. By rotating the lead screw to push the telescopic block to move until the opposite end faces of the two telescopic blocks are inserted, and passing another pin shaft through the inserted part of the two telescopic blocks, the inserted part of the two telescopic blocks can be in a rotatably connected state, that is, the two pliers blades are in a hinged state. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional structural schematic diagram of a midwifery forceps for obstetrics proposed by the present utility model;

[0017] Figure 2 is a cross-sectional structural schematic diagram of a rotating frame of a midwifery forceps for obstetrics proposed by the present utility model;

[0018] Figure 3This utility model provides a structural schematic diagram of a forceps mounting seat for obstetrics

[0019] Figure 4 For Figure 1 The enlarged view of part A in

[0020] Legend: 1. Forceps blade; 2. Connecting handle; 3. Forceps handle; 4. Serrated part; 5. Connecting arm; 6. Rotating frame; 7. Pin shaft; 8. Mounting seat; 9. Sliding seat; 10. First worm; 11. First worm gear; 12. Telescopic block; 13. Lead screw; 14. Second worm gear; 15. Second worm; 16. Mounting groove Detailed implementation mode

[0021] In the description of this utility model, it should be noted that the orientation or positional relationship indicated by terms such as "front", "upper", "lower", "left", "right", "vertical", "horizontal", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing this utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to this utility model

[0022] In the description of this utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to specific situations

[0023] The following further describes this utility model in conjunction with the attached Figures 1-4 drawings

[0024] In order to solve the technical problems in the background technology, the present application provides: an obstetric forceps, including two forceps leaves 1 and two corresponding forceps handles 3, one forceps leaf 1 corresponds to one forceps handle 3, the inner side surface of one of the forceps handles 3 is fixedly connected to a mounting seat 8, the mounting seat 8 is installed on the opposite sides of the two combined forceps handles 3, a connecting arm 5 is rotatably connected in the mounting seat 8, the swing end of the connecting arm 5 is U-shaped, and the inner side surface of the other forceps handle 3 is provided with a plurality of serrated portions 4 for engaging with the swing end of the connecting arm 5, after the two forceps handles 3 are combined, the connecting arm 5 is located between the two forceps handles 3, so when the two forceps leaves 1 clamp the fetal head, the two The two clamp handles 3 are at an angle of a certain angle, so the relative position of the two clamp handles 3 can be fixed by swinging the connecting arm 5 until its movable end abuts against the serrated portion 4. Even if the operator holds the two clamp handles 3 with force, under the support of the connecting arm 5, the two clamp handles 3 can be guaranteed not to change position due to the operator's gripping force, thereby ensuring that the angle of the two clamp blades 1 is fixed to prevent the fetus from being pinched. The side of the serrated portion 4 close to the connecting handle 2 is perpendicular to the clamp handle 3, and the outer wall of the clamp handle 3 is provided with an anti-skid pad, which is a method of preventing people from slipping. The outer wall of the mounting seat 8 is rotatably connected to the first worm gear 11, and one end of the first worm gear 11 is outward. The mounting seat 8 is extended and extended, and is fixedly connected to the rotation part of the connecting arm 5 while passing through the mounting seat 8. A sliding seat 9 is provided on the mounting seat 8. A first worm 10 for meshing with a first worm gear 11 is rotatably connected in the sliding seat 9. Therefore, the first worm gear 11 meshing with the first worm gear 10 is rotated by rotating the first worm gear 10, so that the connecting arm 5 can be swung. The worm and the worm gear are driven in one way, so that the connecting arm 5 connected to the first worm gear 11 can be prevented from shaking. A part of the surface of the sliding seat 9 is embedded in the mounting seat 8, and a pin shaft 7 is connected between the sliding seat 9 and the mounting seat 8. When the two clamp leaves 1 are assembled and After clamping the fetus' head, the sliding seat 9 is moved by pulling out the pin shaft 7 on the sliding seat 9, thereby separating the first worm 10 from the first worm wheel 11, that is, the first worm wheel 11 can rotate smoothly, so it is convenient to quickly move the connecting arm 5 close to the sawtooth portion 4 by toggling the connecting arm 5, and then reset it by the sliding seat 9, and rotate the first worm 10 by a certain angle, so that the first worm 10 is smoothly engaged with the first worm wheel 11, and then the first worm 10 is rotated to realize the first worm wheel 10 driving the connecting arm 5 to achieve fine swing, so that the U-shaped part of the movable end of the connecting arm 5 is stuck on the sawtooth portion 4, and the relative positions of the two clamp handles 3 are fixed:

[0025] In addition, in order to facilitate the hinge connection of the two separately used pliers 1: a connecting handle 2 for hingedly connecting the two pliers 3 is connected between the pliers handle 3 and the pliers leaf 1, a mounting groove 16 is provided on the inner side of the connecting handle 2, a rotating frame 6 is rotatably connected in the mounting groove 16, the rotating frame 6 swings in a direction parallel to the connecting handle 2, the rotating part of the rotating frame 6 extends outward through the groove wall of the mounting groove 16, and is fixedly connected to a second worm gear 14, a second worm 15 meshing with the second worm gear 14 is rotatably connected to the connecting handle 2, and the rotation of the rotating frame 6 makes it possible to adjust the position of the pliers leaf 1 and cause the pliers handle 3 to be unable to be cross-hinged, by rotating the second worm gear 15, the meshing second worm gear 14 can be achieved by rotating the second worm gear 15 to drive the rotating frame 6 at the corresponding position to swing, so that the movable ends of the two rotating frames 6 are aligned, but when the relative end faces of the two rotating frames 6 cannot fit together, that is, there is a When the distance between the two rotating frames 6 is the same, a telescopic block 12 is inserted in the rotating frame 6, and a screw rod 13 is rotatably connected to the inner side wall of the rotating frame 6 and is threadedly connected to the side edge of the telescopic block 12. By rotating the screw rod 13, the telescopic block 12 threadedly connected to the screw rod 13 can be moved in the rotating frame 6, and the distance between the two rotating frames 6 is shortened by moving the telescopic block 12 until the relative end faces of the two telescopic blocks 12 are close to an appropriate distance. The end faces of the two telescopic blocks 12 located outside the rotating frame 6 are plugged in, and the plug-in parts are also penetrated by a pin shaft 7. When the relative end faces of the two telescopic blocks 12 are close to an appropriate distance, that is, the relative end faces of the two telescopic blocks 12 are plugged in, another pin shaft 7 is passed through the plug-in parts of the two telescopic blocks 12, so that the plug-in parts of the two telescopic blocks 12 can be in a rotationally connected state, that is, the two clamp leaves 1 are in a hinged state.

[0026] In the method of use, the two separated forceps blades 1 are respectively attached to the two sides of the fetus' head, and the second worm 15 is rotated to realize the meshing connection of the second worm wheel 14 to drive the rotating frame 6 at the corresponding position to swing, so that the movable ends of the two rotating frames 6 are aligned, and then the screw rod 13 is rotated to realize the movement of the telescopic block 12 threadedly connected with the screw rod 13 in the rotating frame 6 until the opposite end faces of the two telescopic blocks 12 are plugged in, and after the plugging in, another pin shaft 7 is passed through the plug-in parts of the two telescopic blocks 12, so that the plug-in parts of the two telescopic blocks 12 can be in a rotationally connected state, that is, The two clamp blades 1 are put into an articulated state, and then the sliding seat 9 moves to separate the first worm 10 from the first worm wheel 11, and the connecting arm 5 is moved to quickly move the connecting arm 5 close to the serrated portion 4, and then the sliding seat 9 is reset, and the first worm 11 is rotated a certain angle so that the first worm 11 can smoothly engage with the first worm wheel 10, and then the first worm 11 is rotated to realize the first worm wheel 10 to drive the connecting arm 5 to realize fine swinging, so that the U-shaped part of the movable end of the connecting arm 5 is stuck on the serrated portion 4, so that the relative position of the two clamp handles 3 is fixed.

[0027] The specific embodiments described above further elaborate on the purpose, technical solutions, and beneficial effects of the present utility model. It should be understood that the above description is only for the specific embodiments of the present utility model and is not used to limit the protection scope of the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An obstetric forceps, comprising two forceps blades (1) and two corresponding forceps handles (3), characterized in that: On the inner side of one of the pliers handles (3), a mounting seat (8) is fixedly connected. A connecting arm (5) is rotatably connected inside the mounting seat (8). The swinging end of the connecting arm (5) is U-shaped, and a plurality of serrated portions (4) for engaging with the swinging end of the connecting arm (5) are provided on the inner side of the other pliers handle (3). A first worm gear (11) is rotatably connected to the outer wall of the mounting seat (8). One end of the first worm gear (11) extends outward and, while passing through the mounting seat (8), is fixedly connected to the rotating part of the connecting arm (5). A sliding seat (9) is arranged on the mounting seat (8). A first worm (10) for meshing and driving with the first worm gear (11) is rotatably connected inside the sliding seat (9).

2. The obstetric forceps according to claim 1, wherein: A part of the surface of the sliding seat (9) is inserted into the mounting seat (8) in an embedded manner, and a pin shaft (7) is connected between the sliding seat (9) and the mounting seat (8).

3. The obstetric forceps according to claim 1, wherein: A connecting handle (2) for hinging the two pliers handles (3) is connected between the pliers handle (3) and the pliers blade (1). An installation groove (16) is provided on the inner side surface of the connecting handle (2). A rotating frame (6) is rotatably connected inside the installation groove (16). A telescopic block (12) is inserted into the rotating frame (6). The end faces of the two telescopic blocks (12) located outside the rotating frame (6) are inserted, and the inserted part is also provided with a pin shaft (7) passing through.

4. The obstetric forceps according to claim 3, characterized in that: A lead screw (13) that is threadedly connected to the side of the telescopic block (12) in an embedded manner is rotatably connected through the inner side wall of the rotating frame (6).

5. The obstetric forceps according to claim 3, characterized in that: The rotating part of the rotating frame (6) extends outward through the wall of the installation groove (16) and is fixedly connected to a second worm gear (14). A second worm (15) that meshes and drives with the second worm gear (14) is rotatably connected to the connecting handle (2).

6. The obstetric forceps according to claim 3, wherein: The rotating frame (6) swings in a direction parallel to the connecting handle (2).

7. The obstetric forceps according to claim 1, wherein: The surface of the serrated portion (4) close to the connecting handle (2) is perpendicular to the pliers handle (3), and an anti-slip pad is sleeved on the outer wall of the pliers handle (3).

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