Obstetric forceps

Abstract

The invention discloses a kind of obstetric forceps, including obstetric forceps body and control mechanism, obstetric forceps body includes two clamping pieces that can be relatively rotated and first pivot, each clamping piece includes the jaw of clamping fetal head, the handle for holding and the connecting rod connecting jaw and handle, first pivot is arranged at the connecting rod of two clamping pieces;Control mechanism is arranged on one of clamping pieces, including the movable plate for being directly contacted with fetal head and being arranged on corresponding jaw, the control assembly for controlling the activity or fixed of obstetric forceps body and being arranged between corresponding connecting rod and first pivot and the transmission assembly for transmitting the pressure of movable plate to control assembly and being arranged on corresponding handle;The control mechanism is additionally provided on the existing obstetric forceps, and the clamping force of obstetric forceps to fetal head can be set, when the force of obstetric forceps clamping baby head reaches target force, control mechanism will automatically lock two jaws to avoid further tightening to hurt baby head or relaxation to cause clamping not in place.

Description

Technical Field

[0001] This invention relates to the field of medical tools, and in particular to an obstetric forceps. Background Technology

[0002] During natural childbirth, women may experience problems such as cephalic presentation and dystocia. To address these issues, shorten the second stage of labor, and terminate the pregnancy as early as possible, medical staff often use forceps to assist in delivery. This involves using two curved clamps to hold the baby's head and pull it outwards to aid labor. When using forceps, doctors rely solely on touch and experience to judge the appropriate clamping force. However, the baby's head is quite fragile; excessive force can cause injury, while insufficient force may result in inadequate traction, failing to effectively shorten the second stage of labor and potentially endangering the mother. Summary of the Invention

[0003] To address the shortcomings of the prior art, the technical problem to be solved by the present invention is to provide an obstetric forceps, which adds a control mechanism to the existing forceps. When the forceps clamp the baby's head with a certain force, the control mechanism will automatically lock the two clamping plates to prevent excessive force from injuring the baby's head.

[0004] To solve the above-mentioned technical problems, the present invention provides an obstetric forceps, including a forceps body and a control mechanism that fixes the opening angle of the forceps body when the clamping force of the forceps body on the fetal head reaches a set value. The forceps body includes two clamping members that can rotate relative to each other and a first rotating shaft that rotatably connects the two clamping members. Each clamping member includes a clamping plate for clamping the fetal head, a handle for gripping, and a connecting rod connecting the clamping plate and the handle. The first rotating shaft is located at the connecting rod of the two clamping members.

[0005] The control mechanism is located on one of the clamping members and includes a movable plate on the corresponding clamp for direct contact with the fetal head, a control component between the corresponding connecting rod and the first rotating shaft for controlling the movement or fixation of the forceps body, and a transmission component on the corresponding handle for transmitting the pressure of the movable plate to the control component.

[0006] Furthermore, the two clamping members are a first clamping member and a second clamping member that are staggered at the connecting rod. The first clamping member includes a first clamping piece, a first grip, and a first connecting rod. The first clamping member has a cavity for mounting the control mechanism.

[0007] Furthermore, the cavity includes a first cavity located inside the first clip, a second cavity located inside the first connecting rod, and a third cavity located inside the first grip, wherein the first cavity, the second cavity, and the third cavity are connected in sequence.

[0008] Furthermore, the first clamping piece has a slot communicating with the first cavity on the side near the second clamping member. The movable plate includes a pressure block and a contact plate. The first end of the pressure block extends into the first cavity and is slidably connected to the slot. The second end of the pressure block protrudes outside the first clamping piece. The contact plate is fixedly connected to the second end of the pressure block. The transmission component is disposed in the cavity to transmit the force on the movable plate to the control component.

[0009] Furthermore, the transmission assembly includes a second rotating shaft horizontally rotatably mounted in the first cavity, a triggering structure disposed inside the third cavity, and a connecting rope. The first end of the connecting rope is wound around the outer periphery of the second rotating shaft, and the second end of the connecting rope is connected to the triggering structure.

[0010] Furthermore, the second rotating shaft includes a first segment rotatably connected to the first end of the pressure block, a second segment disposed at the end of the first segment away from the pressure block for winding the connecting rope, and a third segment disposed at the end of the second segment away from the first segment, wherein the first segment, the second segment, and the third segment are coaxially arranged.

[0011] The first segment has a spiral groove, and the upper wall of the first cavity is provided with a support rod that is slidably connected to the spiral groove at the position corresponding to the position of the spiral groove; the first cavity has a slot at the position corresponding to the position of the second rotating shaft, and the end of the third segment away from the second segment is slidably disposed in the slot and can rotate around its own axis in the slot; a first spring is provided between the end of the third segment extending into the slot and the bottom wall of the slot.

[0012] Furthermore, the triggering structure includes a third rotating shaft rotatably disposed within the third cavity for the second end of the connecting rope to be wound around it, a push plate disposed on the third rotating shaft, a driven gear rotatably disposed within the third cavity, a plurality of push rods slidably connected to the driven gear, a micro switch disposed in the third cavity corresponding to the position of the push rod, and a control gear meshing with the driven gear;

[0013] The rotation axis of the driven gear is perpendicular to the rotation axis of the third shaft in the horizontal direction. The driven gear has several grooves evenly distributed around its circumference. Each groove passes through the driven gear in a direction parallel to its axis. Several push rods are correspondingly arranged in the grooves. Each push rod and its corresponding groove have an elastic unit. One end of the control gear extends into the third cavity and meshes with the driven gear, while the other end of the control gear protrudes from the first grip.

[0014] Furthermore, the elastic unit includes a mounting groove formed on the corresponding side wall of the slide, a sliding piece disposed on the corresponding push rod near the mounting groove, and a second spring disposed between the mounting groove and the push plate. The elastic coefficient of the second spring in different elastic units is different.

[0015] Furthermore, the first rotating shaft is rotatably connected to the first clamping member, and the first rotating shaft is fixedly connected to the second clamping member. The first connecting rod has a fourth cavity for mounting the control component at a position corresponding to the first rotating shaft. The control component includes a magnetic column disposed in the first rotating shaft, a friction ring disposed on the outer wall of the first rotating shaft, an electromagnet slidably disposed inside the fourth cavity for magnetic attraction with the magnetic column, a friction plate disposed on the side of the electromagnet near the friction ring, and a third spring disposed between the electromagnet and the corresponding side wall of the fourth cavity. The electromagnet is connected to an external power source, and the micro switch is connected in series in the circuit where the electromagnet is electrically connected to the power source.

[0016] Furthermore, the second clamping member is provided with a main switch, which is connected in series in the line that connects the micro switch to the power supply.

[0017] The obstetric forceps of the present invention have at least the following beneficial effects: by adding a control mechanism to the existing forceps, the clamping force of the forceps on the fetal head can be set. When the force of the forceps clamping the baby's head reaches the target force, the control mechanism will automatically lock the two clamping plates to prevent them from tightening further and injuring the baby's head or loosening and causing inadequate clamping. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0019] Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention. Figure 1 ;

[0020] Figure 2 This is a schematic diagram of the structure of an embodiment of the present invention. Figure 2 ;

[0021] Figure 3 This is a schematic diagram of the structure of an embodiment of the present invention. Figure 3 ;

[0022] Figure 4 for Figure 2 Enlarged view of section A in the middle;

[0023] Figure 5 for Figure 2 Enlarged view of section B;

[0024] Figure 6 for Figure 3 Enlarged view of section C;

[0025] Figure 7 This is a schematic diagram of the driven gear, push rod, and elastic unit of the present invention;

[0026] Figure 8 This is a schematic diagram of the micro switch installation.

[0027] Figure 9 This is a schematic diagram of the structure of the first rotating shaft at the first connecting rod and the control component of the present invention;

[0028] Figure 10 for Figure 9 Sectional view of AA.

[0029] The meanings of the labels in the attached diagram are as follows:

[0030] First clamping component 1, first clamping piece 11, first grip 12, first connecting rod 13, first cavity 14, second cavity 15, third cavity 16, slot 17;

[0031] Second clamping component 2, second clamping plate 21, second grip 22, second connecting rod 23;

[0032] First rotating shaft 3;

[0033] Movable plate 4, pressure block 41, contact plate 42;

[0034] Control component 5, magnetic column 51, friction ring 52, electromagnet 53, friction plate 54, third spring 55, fourth cavity 56;

[0035] Second rotating shaft 61, first segment 611, spiral groove 6111, support rod 6112, second segment 612, baffle 6121, third segment 613, slot 6131, stop edge 6132, first spring 6133, trigger structure 62, third rotating shaft 621, push plate 622, driven gear 623, push rod 624, micro switch 625, control gear 626, slide groove 627, elastic unit 628, mounting groove 6281, slide plate 6282, second spring 6283, mounting frame 629, connecting rope 63;

[0036] Main switch 7. Detailed Implementation

[0037] The invention will now be further described with reference to the accompanying drawings.

[0038] Reference Figures 1 to 3The present invention discloses an obstetric forceps, comprising a forceps body and a control mechanism that fixes the opening angle of the forceps body when the clamping force of the forceps body on the fetal head reaches a set value. The forceps body includes a first clamping member 1 and a second clamping member 2 that can rotate relative to each other, and a first rotating shaft 3 that rotatably connects the first clamping member 1 and the second clamping member 2.

[0039] The first clamping member 1 includes a first clamping piece 11 for clamping the tire head, a first grip 12 for holding, and a first connecting rod 13 connecting the first clamping piece 11 and the first grip 12. The cross-section of the first clamping piece 11 is arc-shaped with its opening facing the second clamping piece 21. The first connecting rod 13 extends downward from the lower end of the first clamping piece 11 and its lower end extends obliquely towards the second clamping piece 21. The first grip 12 is vertically disposed at the lower end of the first connecting rod 13. The first clamping member 1 has a cavity for mounting the control mechanism. The cavity includes a first cavity 14 located inside the first clamping piece 11, a second cavity 15 located inside the first connecting rod 13, and a third cavity 16 located inside the first grip 12. The first cavity 14, the second cavity 15, and the third cavity 16 are sequentially connected, and the third cavity 16 extends forward through the first grip 12. The second clamping member 2 includes a second clamping piece 21 for clamping the tire head, a second grip 22 for holding, and a second connecting rod 23 connecting the second clamping piece 21 and the second grip 22. The cross-section of the second clamping piece 21 is arc-shaped with its opening facing the first clamping piece 11, forming a clamping space for clamping the tire head between the clamping piece 11 and the first clamping piece 11. The second connecting rod 23 extends downward from the lower end of the second clamping piece 21, and its lower end extends obliquely towards the first clamping piece 11 and intersects with the first connecting rod 23. The second grip 22 is vertically disposed at the lower end of the second connecting rod 23. The first rotating shaft 3 is disposed at the intersection of the first connecting rod 13 and the second connecting rod 23, and is rotatably connected to the first clamping member 1 and fixedly connected to the second clamping member 2.

[0040] The control mechanism is located on the first clamping member 1 and includes a movable plate 4 on the first clamping plate 11 for direct contact with the fetal head, a control component 5 located between the first connecting rod 13 and the first rotating shaft 3 for controlling the movement or fixation of the forceps body, and a transmission component on the first grip 12 for transmitting the pressure of the movable plate 4 to the control component 5.

[0041] The movable plate 4 includes a pressure block 41 and a contact plate 42. The first clamping piece 11 has a slot 17 that matches the movable plate 4 on the side near the second clamping piece 21. The pressure block 41 is slidably connected to the slot 17, with its first end extending into the first cavity 14 and its second end protruding outside the first clamping piece 11 through the slot 17. The contact plate 42 is fixedly disposed at the second end of the pressure block 41.

[0042] Reference Figure 4 The transmission assembly includes a second rotating shaft 61 horizontally rotatably mounted inside the first cavity 14, a trigger structure 62 disposed inside the third cavity, and a connecting rope 63. The second rotating shaft 61 includes a first segment 611 rotatably connected to the first end of the pressure block 41, a second segment 612 disposed at the end of the first segment 611 away from the pressure block 41, and a third segment 613 disposed at the end of the second segment 612 away from the first segment 611; the first segment 611, the second segment 612, and the third segment 613 are coaxially arranged and can rotate around their own axis. A spiral groove 6111 is formed on the outer periphery of the first segment 611. A support rod 6112 is provided on the upper wall of the first cavity 14 at a position corresponding to the end of the spiral groove 6111 away from the pressure block 41. The support rod 6112 extends downward into the spiral groove 6111 and is slidably connected to the spiral groove 6111. Baffles 6121 are provided at both ends of the second segment 612 laterally. The first cavity 14 has a slot 6131 on the side away from the pressure block 41, into which the third segment 613 extends. The opening of the slot 6131 protrudes inward along its own radial direction to form a through-hole with an inner diameter smaller than the inner diameter of the slot 6131. ​​The end of the third segment 613 away from the second segment 612 extends into the slot 6131 through the through-hole. The end of the third segment 613 extending into the slot 6131 protrudes outward along its own radial direction to form a retaining edge 6132. The inner diameter of the retaining edge 6132 is larger than the inner diameter of the through-hole and matches the inner diameter of the slot 6131 so that the third segment 613 will not slide out of the slot 6131. A first spring 6133 is provided between one end of the third segment 613 that extends into the slot 6131 and the bottom wall of the slot 6131. ​​The first spring 6133 is arranged along the axial direction of the second rotating shaft 61. One end of the first spring 6133 is fixedly connected to the second rotating shaft 61, and the other end of the first spring 6133 is fixedly connected to the inner wall of the slot 6131.

[0043] Reference Figures 5 to 8The triggering structure 62 includes a third rotating shaft 621 rotatably disposed within the third cavity 16, a push plate 622 disposed on the third rotating shaft 621, a driven gear 623 rotatably disposed within the third cavity 16, a plurality of push rods 624 slidably connected to the driven gear 623, a micro switch 625 disposed within the third cavity 16 corresponding to the positions of the push rods 624, and a control gear 626 meshing with the driven gear 623. The third rotating shaft 621 is horizontally rotatably disposed between the front and rear side walls of the third cavity 16. The push plate 622 is vertically disposed at the lower part of the third rotating shaft 621 along the length direction of the third rotating shaft 621. The driven gear 623 is horizontally rotatably disposed between the transverse side walls of the third cavity 16 at a position below the third rotating shaft 621, and its rotation axis is perpendicular to the rotation axis of the third rotating shaft 621 in the horizontal direction. The driven gear 623 has a plurality of circumferentially distributed grooves 627, each groove 627 passing through the driven gear 623 along a direction parallel to its axis. A plurality of push rods 624 are slidably disposed in the grooves 627, with both ends extending beyond the grooves 627 in their length direction. When the driven gear 623 rotates, one push rod 624 is always positioned directly opposite the push plate 622. An elastic element 628 is provided between each push rod 624 and its corresponding groove 627. The front edge of the third cavity 16 extends outward to form a mounting frame 629 for mounting the control gear 626. The control gear 626 is damped and rotated between the two transverse side walls of the mounting frame 629, and its central axis is parallel to the central axis of the driven gear 623. One end of the control gear 626 extends into the third cavity 16 to mesh with the driven gear 623, and the other end extends out of the mounting frame 629 to facilitate rotation by the user. The elastic unit 628 includes a mounting groove 6281 formed on the side wall of the corresponding slide groove 627, a slide plate 6282 on the corresponding push rod 624 near the mounting groove 6281, and a second spring 6283 between the mounting groove 6281 and the slide plate 6282. The slider 6282 is slidably connected to the mounting groove 6281 and is located within the mounting groove 6281 on the side near the push plate 622. The second spring 6283 is arranged along the length of the mounting groove 6281. One end of the second spring 6283 is connected to the side of the slider 6282 away from the push plate 622, and the other end of the second spring 6283 is connected to the corresponding side wall of the mounting groove 6281. Different second springs 6283 have different elastic coefficients. The micro switch 625 is located on one side wall inside the third cavity 16, and this side wall is the side wall of the driven gear 623 away from the push plate 622. The micro switch 625 is located on this side wall at a position corresponding to the push rod 624 directly opposite the push plate 622.

[0044] One end of the connecting rope 63 is wound around the second segment 612 at the position between the two baffles 6121, and the other end of the connecting rope 63 passes through the first cavity 14 and the second cavity 15 in sequence and is wound around the outer periphery of the third rotating shaft 621. Under the action of the connecting rope 63, the second springs 6283 with different elastic coefficients cause different resistances when the contact plate 42 squeezes and the pressure block 41 slides.

[0045] Reference Figure 9 and Figure 10 The control component 5 includes a magnetic post 51 disposed in the first rotating shaft 3, a friction ring 52 disposed outside the first rotating shaft 3, an electromagnet 53 magnetically engaged with the magnetic post 51, a friction plate 54 disposed on the side of the electromagnet 53 near the friction ring 52, and a third spring 55 disposed on the electromagnet 53. A fourth cavity 56 for mounting the control component 5 is provided at a position corresponding to the first rotating shaft 3 on the first connecting rod 13, and the fourth cavity 56 extends radially along the first rotating shaft 3. The magnetic post 51 is coaxially disposed within the first rotating shaft 3 along its length, and the friction ring 52 is coaxially disposed on the outer periphery of the first rotating shaft 3 along its length. The friction ring 52 is fixedly connected to the first rotating shaft 3, and the electromagnet 53 is slidably disposed within the fourth cavity 56 and can move closer to or further away from the first rotating shaft 3 radially. The friction plate 54 is disposed on the side of the electromagnet 53 near the friction ring 52 and matches the friction ring 52. The friction plate 54 is fixedly connected to the electromagnet 53. The third spring 55 is disposed between the side of the electromagnet 53 away from the friction ring 52 and the corresponding inner wall of the fourth cavity 56. The third spring 55 is arranged along the length direction of the fourth cavity 56. One end of the third spring 55 is fixedly connected to the inner wall of the fourth cavity 56, and the other end of the third spring 55 is fixedly connected to the electromagnet 53.

[0046] The electromagnet 53 is connected to an external power source, and the micro switch 625 is connected in series in the circuit where the electromagnet 53 is electrically connected to the external power source. The second clamping member 2 is provided with a main switch 7, which is connected in series in the circuit where the micro switch 625 is electrically connected to the external power source.

[0047] One embodiment of the obstetric forceps of the present invention operates as follows: When the contact plate 42 is not in contact with the fetal head, the pressure block 41 extends beyond the first clamping piece 11 under the elastic force of the first spring 6133. The push rod 624 moves away from the micro switch 625 under the elastic force of the second spring 6283. Since the micro switch 625 is not triggered, the electromagnet 53 is not powered and cannot generate magnetic attraction. The friction plate 54 moves away from the friction ring 52 under the elastic force of the third spring 55. At this time, the first clamping member 1 can rotate freely relative to the second clamping member 2.

[0048] When the fetal head needs to be clamped, first turn the control gear 626 to drive the driven gear 623 to rotate, so that the push rod 624 corresponding to the required clamping force is aligned with the push plate 622 and the micro switch 625. Turn on the main switch 7, and the operation will cause the first clamping member 1 and the second clamping member 2 to separate and extend into the birth canal to clamp the fetal head. When the contact plate 42 contacts the tire head and gradually increases the pressure on the tire head, the contact plate 42 squeezes the pressure block 41 into the slot 17, causing the second rotating shaft 61 to move in the same direction. The second rotating shaft 61 rotates around its own axis and winds the connecting rope 63 under the cooperation of the spiral groove 6111 and the support rod 6112. The connecting rope 63 contracts, causing the third rotating shaft 621 to rotate and squeeze the push rod 624 aligned with the micro switch 625. When the contact plate 42 contacts the first clamping piece 11, the contact plate 42 stops moving. At this time, the push rod 624 moves to contact the micro switch 625 and triggers the micro switch 625. At this time, the electromagnet 53 is energized to generate magnetic attraction and moves quickly towards the magnetic column 51, causing the friction plate 54 to press the friction ring 52. At this time, the first clamping member 1 and the second clamping member 2 are difficult to rotate relative to each other and therefore remain relatively fixed, and the clamping force on the tire head remains constant. When a different clamping force needs to be applied again, turn off the main switch 7. The electromagnet 53 will be de-energized, causing the friction plate 54 to separate from the friction ring 52, which will make it easy to loosen the clamp on the tire head and then set a new clamping force.

Claims

1. An obstetric forceps, comprising a forceps body, characterized in that: It also includes a control mechanism that fixes the opening and closing angle of the forceps body when the clamping force of the forceps body on the fetal head reaches a set value. The forceps body includes two clamping members that can rotate relative to each other and a first rotating shaft that rotatably connects the two clamping members. Each clamping member includes a clamping plate for clamping the fetal head, a handle for gripping, and a connecting rod connecting the clamping plate and the handle. The first rotating shaft is located at the connecting rod of the two clamping members. The control mechanism is located on one of the clamping members. The control mechanism includes a movable plate located on the corresponding clamp for direct contact with the fetal head, a control component located between the corresponding connecting rod and the first rotating shaft for controlling the movement or fixation of the forceps body, and a transmission component located on the corresponding handle for transmitting the pressure of the movable plate to the control component. The two clamping members are a first clamping member and a second clamping member that are staggered at the connecting rod. The first clamping member includes a first clamping plate, a first grip, and a first connecting rod. The first clamping member has a cavity for installing the control mechanism. The cavity includes a first cavity located inside the first clamping plate, a second cavity located inside the first connecting rod, and a third cavity located inside the first grip. The first cavity, the second cavity, and the third cavity are connected in sequence. The transmission assembly is disposed in the cavity to transmit the pressure of the movable plate to the control assembly. The transmission assembly includes a second rotating shaft horizontally rotatably mounted in the first cavity, a trigger structure disposed inside the third cavity, and a connecting rope. The first end of the connecting rope is wrapped around the outer circumference of the second rotating shaft, and the second end of the connecting rope is connected to the trigger structure. The first rotating shaft is rotatably connected to the first clamping member and fixedly connected to the second clamping member. A fourth cavity for mounting the control assembly is opened at the position of the first connecting rod corresponding to the first rotating shaft. The control assembly includes a magnetic column embedded in the first rotating shaft, a friction ring sleeved on the outer wall of the first rotating shaft, an electromagnet slidably disposed inside the fourth cavity for magnetic attraction with the magnetic column, a friction plate disposed on the side of the electromagnet near the friction ring, and a third spring disposed between the electromagnet and the corresponding side wall of the fourth cavity. The electromagnet is externally powered.

2. The obstetric forceps as described in claim 1, characterized in that: The first clamping piece has a slot communicating with the first cavity on the side near the second clamping member. The movable plate includes a pressure block and a contact plate. The first end of the pressure block extends into the first cavity and is slidably connected to the slot. The second end of the pressure block protrudes outside the first clamping piece. The contact plate is fixedly connected to the second end of the pressure block.

3. An obstetric forceps as described in claim 2, characterized in that: The second rotating shaft includes a first segment rotatably connected to the first end of the pressure block, a second segment located at the end of the first segment away from the pressure block for winding the connecting rope, and a third segment located at the end of the second segment away from the first segment. The first segment, the second segment, and the third segment are coaxially arranged. The first segment has a spiral groove, and the upper wall of the first cavity is provided with a support rod that is slidably connected to the spiral groove at the position corresponding to the position of the spiral groove; the first cavity has a slot at the position corresponding to the position of the second rotating shaft, and the end of the third segment away from the second segment is slidably disposed in the slot and can rotate around its own axis in the slot; a first spring is provided between the end of the third segment extending into the slot and the bottom wall of the slot.

4. An obstetric forceps as described in claim 1, characterized in that: The triggering structure includes a third rotating shaft rotatably disposed in the third cavity for the second end of the connecting rope to be wound around it, a push plate disposed on the third rotating shaft, a driven gear rotatably disposed in the third cavity, a plurality of push rods slidably connected to the driven gear, a micro switch disposed in the third cavity corresponding to the position of the push rod, and a control gear meshing with the driven gear. The rotation axis of the driven gear is perpendicular to the rotation axis of the third shaft in the horizontal direction. The driven gear has several grooves evenly distributed around its circumference. Each groove passes through the driven gear in a direction parallel to its axis. Several push rods are correspondingly arranged in the grooves. Each push rod and its corresponding groove have an elastic unit. One end of the control gear extends into the third cavity and meshes with the driven gear, while the other end of the control gear protrudes from the first grip.

5. An obstetric forceps as described in claim 4, characterized in that: The elastic unit includes a mounting groove formed on the side wall of the corresponding slide, a sliding piece disposed on the corresponding push rod near the mounting groove, and a second spring disposed between the mounting groove and the push plate. The elastic coefficient of the second spring in different elastic units is different.

6. An obstetric forceps as described in claim 5, characterized in that: The micro switch is connected in series in the circuit where the electromagnet is electrically connected to the power supply.

7. An obstetric forceps as described in claim 6, characterized in that: The second clamping member is provided with a main switch, which is connected in series in the circuit where the micro switch is electrically connected to the power supply.

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