Obstetrical forceps with scissors function for delivery in obstetrical department

By designing obstetric forceps with scissor function, the problem of fetal and maternal injury caused by improper forceps clamping force was solved, and precise control of force and distance was achieved, providing convenient and safe obstetric procedures.

CN121867914APending Publication Date: 2026-04-17SUZHOU TRADITIONAL CHINESE MEDICINE HOSPITAL
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SUZHOU TRADITIONAL CHINESE MEDICINE HOSPITAL
Filing Date
2023-12-06
Publication Date
2026-04-17

AI Technical Summary

Technical Problem

When using forceps for delivery, improper clamping force can easily lead to injury to the fetus and the mother. Existing forceps are inconvenient to operate, making it difficult to adjust the traction force according to the size of the fetal head and to perform episiotomy.

Method used

An obstetric forceps with scissor function was designed, comprising a clamping box, a traction mechanism, a damping mechanism, and a shearing component. The clamping box adjusts the force, the damping mechanism regulates the traction force, and the shearing component performs episiotomy, achieving precise control of force and distance.

Benefits of technology

It enables the adjustment of traction force according to the size of the fetal head, avoiding injury to the fetus and the mother, facilitating and safely performing episiotomy, and improving the convenience and safety of assisted delivery procedures.

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Abstract

The invention relates to the technical field of obstetrical forceps, and particularly discloses an obstetrical forceps with a scissors function for delivery in the obstetrical department, which comprises an obstetrical forceps main body, the obstetrical forceps main body can be divided into a left blade and a right blade, and the tail part of the obstetrical forceps main body is provided with a blade handle; the clamping box is positioned at the tail part of the blade handle; the traction mechanism is positioned at one end of the clamping box, which is opposite to the obstetric forceps main body; the damping mechanism is located between the clamping box and the traction mechanism; when the device is used, a user can decide the force of pulling a tire head through the traction mechanism every time according to the force of clamping a blade handle through the clamping box, different pulling forces and distances are adjusted through the damping mechanism according to the tire heads of different sizes, and the situation that the tire heads are extruded due to the large pulling force is avoided; in the using process, in order to avoid birth canal injury, a perineum lateral cutting operation can be conducted on a puerpera through the cutting piece, and the perineum lateral cutting device is very convenient and safe to use.
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Description

Technical Field

[0001] This invention relates to the field of obstetric forceps technology, specifically to an obstetric forceps with scissor function for delivery. Background Technology

[0002] During childbirth, if the mother's labor force is insufficient, the fetus is in distress, or the fetus has difficulty passing through the birth canal, forceps can be used to assist delivery after the cervix is ​​fully dilated. Forceps delivery is the most common and frequently used surgical procedure in obstetrics to resolve dystocia. It is used in the second stage of labor. Forceps are placed on both sides of the fetal head, and after the forceps are closed, they are used to pull and tug in conjunction with uterine contractions, thus allowing the fetal head to be delivered smoothly.

[0003] When using forceps for delivery, the forceps consist of two blades that form a space between them, roughly the size and shape of the fetal head. This space encircles and protects the fetal head, preventing it from being compressed. The midwife holds the handles and gently pulls outward to help deliver the fetal head. Because fetal heads vary in size, the clamping and traction forces will also vary. Excessive clamping forceps can cause minor injuries to the fetus, such as forceps marks, facial skin abrasions, and cephalhematoma. For the mother, it can lead to birth canal injuries, including perineal tears, vaginal wall tears, and cervical tears. Therefore, episiotomy and timely adjustment of traction forceps are required, which is very inconvenient to use. To address this, we propose a type of obstetric forceps with scissor function. Summary of the Invention

[0004] The purpose of this invention is to provide obstetric forceps with scissor function for obstetric delivery, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an obstetric forceps with scissor function, comprising a forceps body, the forceps body being divided into a left leaf and a right leaf, and a leaf stalk at the tail of the forceps body;

[0006] The clamping box is located at the tail of the blade stalk. The clamping box can clamp the blade stalk of the forceps body, making it convenient for medical staff to pull the fetal head.

[0007] The traction mechanism is located at one end of the forceps body based on the clamp box principle. The traction mechanism can pull the fetal head by traction clamp box;

[0008] The damping mechanism is located between the clamping box and the traction mechanism. The damping mechanism can determine the traction force of the traction mechanism on the clamping box by the clamping force of the main body of the delivery clamp.

[0009] The shearing component is located on one side of the clamping box and can be used to perform an episiotomy on the mother when using forceps.

[0010] The clamping box is located on the outer periphery of the blade stalk tail. The clamping box is fixedly connected to the main body of the forceps on the left side of the blade. A connecting rod is rotatably connected above the baffle. The end of the connecting rod away from the baffle is located on the right side of the blade. The end of the connecting rod away from the baffle is provided with a snap-fit ​​component that can snap the clamping box to the blade stalk.

[0011] The snap-fit ​​component includes a snap-fit ​​box fixedly connected to the end of the connecting rod away from the baffle. A through hole is opened at the end of the snap-fit ​​box away from the baffle, and an air storage chamber is opened inside the through hole. A telescopic rod is slidably connected to the end of the through hole near the baffle blade handle. A magnet is fixedly connected to the side of the telescopic rod near the blade handle. A threaded hole is opened at the end of the telescopic rod away from the magnet. A threaded rod is provided inside the threaded hole and is threadedly connected to the threaded hole. A knob is fixedly connected to the end of the threaded rod away from the telescopic rod. The knob is located outside the snap-fit ​​box.

[0012] The through-hole is square at the end near the petiole and round at the end away from the petiole.

[0013] The traction mechanism includes an extension rod fixedly connected to the end of the clamping box away from the forceps body. A traction box is slidably connected to the periphery of the extension rod. A piston hole is opened inside the traction box. A piston rod is slidably connected inside the piston hole. The piston rod is located at the end of the extension rod away from the forceps body. An air hole is opened inside the traction box. The end of the piston rod away from the extension rod is connected to the end of the extension rod away from the piston rod through the air hole. A one-way valve is provided inside the air hole near the end of the extension rod.

[0014] The one-way valve includes a fixed rod fixedly connected inside the air hole, a torsion spring fixedly connected to the outer wall of the fixed rod, a rotating plate fixedly connected to the end of the torsion spring away from the fixed rod, and a stop block fixedly connected inside the air hole, with the stop block located at the end of the rotating plate away from the extension rod.

[0015] The damping mechanism includes a fixed frame fixedly connected to the upper end of the traction box, an air tank fixedly connected above the fixed frame, a limit plate slidably connected to the end of the air tank near the baffle, a limit hole is opened in the center of the limit plate, and the end of the air tank away from the limit plate is connected to the air storage chamber through an air pipe.

[0016] An adjustment hole is provided on the top of the traction box. The adjustment hole is located between the rotating plate and the piston hole. An adjustment rod is fixedly connected to the inner wall of the adjustment hole. An adjustment plate is rotatably connected to the outer side of the adjustment rod. A positioning rod is fixedly connected to the end of the adjustment plate away from the air hole. The positioning rod is located inside the limiting hole and is slidably connected to the limiting hole. A sealing block is fixedly connected between the outer wall of the adjustment rod and the inner wall of the adjustment hole. The sealing block is made of rubber.

[0017] The shearing component includes a sliding hole located at the end of the traction box away from the air hole, a limiting groove located at the end of the traction box away from the piston hole, a sliding rod slidably connected inside the sliding hole, a limiting rod fixedly connected to the end of the sliding rod near the limiting groove, the limiting rod located inside the limiting groove and slidably connected to the limiting groove, a fixed shear fixedly connected to the end of the sliding rod near the forceps body, a support rod fixedly connected to the sliding rod below the fixed shear, a rotating shear rotatably connected to the periphery of the support rod, and a driving component inside the sliding rod capable of driving the rotating shear to rotate around the support rod.

[0018] The driving component includes a driving hole located in the center of the limiting rod, a rope hole located in the center of the sliding rod near the fixed shear, the rope hole being connected to the driving hole, a driving rod fixedly connected to the bottom of the inner wall of the driving hole, a torsion spring II fixedly connected to the outer wall of the driving rod, a winch fixedly connected to the end of the torsion spring II away from the driving rod, a rope fixedly connected to the outer wall of the winch, the rope being fixedly connected to the rotating shear through the rope hole, a rotating cylinder fixedly connected to the end of the winch away from the inner wall of the driving hole, the end of the rotating cylinder away from the winch being located outside the limiting rod, and a handle fixedly connected to the end of the rotating cylinder away from the winch.

[0019] The present invention has at least the following beneficial effects:

[0020] When using this invention, the user can determine the force of pulling the fetal head through the traction mechanism by the force of the clamping box holding the leaf stalk. Different pulling forces and distances can be adjusted according to different sizes of fetal heads through the damping mechanism to avoid squeezing the fetal head due to excessive pulling force. During use, in order to avoid damage to the birth canal, an episiotomy can be performed on the mother through the shearing piece. It is very convenient and safe to use. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the obstetric forceps of the present invention;

[0022] Figure 2 This is a schematic diagram of the front structure of the obstetric forceps of the present invention;

[0023] Figure 3 This is a schematic diagram of the overall structure of the clamping box of the present invention;

[0024] Figure 4 This is a cross-sectional view of the card box structure of the present invention;

[0025] Figure 5 This is a schematic diagram of the overall structure of the traction mechanism of the present invention;

[0026] Figure 6 This is a schematic diagram of the overall structure of the damping mechanism of the present invention;

[0027] Figure 7 This is a schematic diagram of the internal structure of the traction box of the present invention;

[0028] Figure 8 This is a schematic diagram of the overall structure of the one-way valve of the present invention;

[0029] Figure 9 This is a schematic diagram of the overall structure of the adjustment plate of the present invention;

[0030] Figure 10 This is an enlarged schematic diagram of the damping mechanism of the present invention;

[0031] Figure 11 This is a schematic diagram of the overall structure of the driving component of the present invention;

[0032] Figure 12 This is a schematic diagram of the exploded structure of the driving component of the present invention;

[0033] Figure 13 This is a top view schematic diagram of the cross-sectional structure of the sliding rod of the present invention;

[0034] Figure 14 This is a schematic diagram of the electromagnet structure in Example 2;

[0035] Figure 15 This is a schematic diagram of the electromagnetic block structure in Example 2.

[0036] In the diagram: 1-Forceps body; 11-Left blade; 12-Right blade; 13-Blade stalk; 2-Clamping box; 21-Baffle; 22-Connecting rod; 3-Traction mechanism; 31-Extension rod; 32-Traction box; 33-Piston hole; 34-Piston rod; 35-Air hole; 36-Adjusting hole; 37-Adjusting rod; 38-Adjusting plate; 39-Sealing block; 310-Positioning rod; 4-Damping mechanism; 41-Fixing frame; 42-Air tank; 43-Limiting plate; 44-Limiting hole; 45-Air tube; 5-Shearing component; 51-Sliding hole; 52-Limiting groove; 53-Sliding rod; 54- 55-Limit rod; 56-Fixed shears; 57-Support rod; 6-Rotating shears; 6-Snap-fit ​​component; 61-Snap-fit ​​box; 62-Through hole; 63-Air storage chamber; 64-Telescopic rod; 65-Magnet; 66-Threaded hole; 67-Threaded rod; 68-Knob; 7-One-way valve; 71-Fixed rod; 72-Torsion spring one; 73-Rotating plate; 74-Stop block; 8-Drive component; 81-Drive hole; 82-Rope hole; 83-Drive rod; 84-Torsion spring two; 85-Windlass; 86-Rope; 87-Rotating cylinder; 88-Handle; 9-Electromagnet; 91-Moving groove; 92-Electromagnetic block. Detailed Implementation

[0037] 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.

[0038] Example 1

[0039] Please see Figure 1-15 This invention provides a technical solution: an obstetric forceps with scissor function, comprising a forceps body 1, which can be divided into a left blade 11 and a right blade 12, with a blade stalk 13 at the tail end; a clamping box 2, located at the tail end of the blade stalk 13, which can clamp the blade stalk 13 of the forceps body 1, facilitating the traction of the fetal head by medical personnel; a traction mechanism 3, located at one end of the clamping box 2 from the forceps body 1, which can pull the fetal head by traction of the clamping box 2; and a damping mechanism 4, located between the clamping box 2 and the traction mechanism 3, which can... The force applied by the forceps body 1 determines the traction force of the traction mechanism 3 on the clamping box 2. The shearing component 5, located on one side of the clamping box 2, allows for episiotomy when using forceps. In this invention, the user can determine the force applied by the traction mechanism 3 to pull the fetal head each time by adjusting the force applied by the clamping box 2 to hold the leaf stalk 13. The damping mechanism 4 adjusts the traction force and distance according to different fetal head sizes to avoid squeezing the fetal head due to excessive traction force. During use, to avoid damage to the birth canal, episiotomy can be performed on the mother using the shearing component 5, making it very convenient and safe to use.

[0040] Clamping box 2 is located on the outer periphery of the tail of blade stalk 13. Clamping box 2 is fixedly connected to baffle 21 near the forceps body 1 on the left blade 11 side. A connecting rod 22 is rotatably connected above baffle 21. The end of connecting rod 22 away from baffle 21 is located on the right blade 12 side. A locking member 6 is provided at the end of connecting rod 22 away from baffle 21, capable of engaging clamping box 2 with blade stalk 13. The locking member 6 includes a locking box 61 fixedly connected to the end of connecting rod 22 away from baffle 21. A through hole 62 is opened at one end, and an air storage chamber 63 is opened inside the through hole 62. A telescopic rod 64 is slidably connected to one end of the through hole 62 near the blade stalk 13 of the baffle 21. A magnet 65 is fixedly connected to the side of the telescopic rod 64 near the blade stalk 13. A threaded hole 66 is opened at the end of the telescopic rod 64 away from the magnet 65. A threaded rod 67 is provided inside the threaded hole 66. The threaded rod 67 is threadedly connected to the threaded hole 66. A knob 68 is fixedly connected to the end of the threaded rod 67 away from the telescopic rod 64. The knob 68 is located outside the snap-fit ​​box 61.

[0041] When using forceps to clamp the fetal head, the left leaflet 11 and right leaflet 12 are placed between the fetal head and the inner wall of the birth canal. The leaf stalks 13 of the left and right leaflets 11 and 12 are then fixed in place. The fixed leaf stalks 13 are inserted into the clamping box 2, and the leaf stalks 13 are brought into contact with the baffle 21. The connecting rod 22 is rotated, causing the clamping box 61 to rotate parallel to the baffle 21. Because the telescopic rod 64 located inside the through hole 62 has a magnet 65, the magnet 65 attracts the leaf stalks 13, causing the telescopic rod 64 to slide within the through hole 62. As the telescopic rod 64 slides, it causes the threaded rod 67 to slide as well. The outer walls of the telescopic rod 64 and the threaded rod 67 cooperate with the inner wall of the through hole 62 to reduce airflow. At this time, the space inside the air storage chamber 63 becomes larger, which lays the foundation for the damping mechanism 4 to control the pulling force. After the magnet 65 attracts the blade 13, since the end of the through hole 62 near the blade 13 is a square hole and the end of the through hole 62 away from the blade 13 is a round hole, the telescopic rod 64 will not rotate with the threaded rod 67 when the knob 68 is turned. The telescopic rod 64 will extend and retract within the through hole 62. At this time, turning the knob 68 will lock the telescopic rod 64 and the blade 13, which facilitates the pulling operation.

[0042] The traction mechanism 3 includes an extension rod 31 fixedly connected to the end of the clamping box 2 away from the forceps body 1. A traction box 32 is slidably connected to the periphery of the extension rod 31. A piston hole 33 is opened inside the traction box 32, and a piston rod 34 is slidably connected inside the piston hole 33. The piston rod 34 is located at the end of the extension rod 31 away from the forceps body 1. An air hole 35 is opened inside the traction box 32. The end of the piston rod 34 away from the extension rod 31 is connected to the end of the extension rod 31 away from the piston rod 31 through the air hole 35. A one-way valve 7 is provided inside the air hole 35 near the end of the extension rod 31. After the blade 13 is fixed, the user holds the outer shell of the traction box 32 with one hand. With the other hand, grip the piston rod 34 and perform piston movement. When the piston rod 34 is pulled out, the cavity at the end of the piston rod 34 away from the extension rod 31 is compressed. Gas flows through the vent 35 toward the end of the extension rod 31, pushing the extension rod 31 towards the piston rod 34. During the gas movement, the one-way valve 7 located in the vent 35 blocks the gas. Each time the piston rod 34 is pulled, the gas pushes up the one-way valve 7 to open the vent 35. Since the one-way valve 7 is irreversible, it provides a stable pulling environment for the extension rod 31, preventing the extension rod 31 from rebounding and causing the pulling effect to be insignificant.

[0043] One-way valve 7 includes a fixed rod 71 fixedly connected inside the vent 35. A torsion spring 72 is fixedly connected to the outer wall of the fixed rod 71. A rotating plate 73 is fixedly connected to the end of the torsion spring 72 away from the fixed rod 71. A stop block 74 is fixedly connected inside the vent 35. The stop block 74 is located at the end of the rotating plate 73 away from the extension rod 31. When the piston rod 34 is pulled, the piston rod 34 pushes the gas in the piston hole 33. The gas passes through the vent 35 and pushes the rotating plate 73. The rotating plate 73 rotates around the fixed rod 71, allowing the gas to enter near the extension rod. When the piston rod 34 is stopped being pulled, the rotating plate 73 is reset by the torsion spring 72. The rotating plate 73 closes the air hole 35 and abuts against the stop block 74. At this time, the gas in the piston hole 33 located near the extension rod 31 will not be discharged. Each time the piston rod 34 is pulled, the extension rod 31 will slide a certain distance. This distance will be adjusted by the damping mechanism 4 according to the size of the fetal head, reducing the damage of the forceps body 1 to the fetal head and protecting the mother's birth canal. It is very safe and reliable when in use.

[0044] The damping mechanism 4 includes a fixed frame 41 fixedly connected to the upper end of the traction box 32. An air tank 42 is fixedly connected above the fixed frame 41. A limit plate 43 is slidably connected to the end of the air tank 42 near the baffle 21. A limit hole 44 is formed in the center of the limit plate 43. The end of the air tank 42 away from the limit plate 43 is connected to the air storage chamber 63 via an air pipe 45. An adjustment hole 36 is formed above the traction box 32, located between the rotating plate 73 and the piston hole 33. An adjustment rod 37 is fixedly connected to the inner wall of the adjustment hole 36, and a rotatable axle is rotatably connected to the outer periphery of the adjustment rod 37. Adjusting plate 38, with a positioning rod 310 fixedly connected to the end of adjusting plate 38 away from air hole 35. Positioning rod 310 is located inside limiting hole 44 and slidably connected to limiting hole 44. A sealing block 39 is fixedly connected between the outer wall of adjusting rod 37 and the inner wall of adjusting hole 36. The sealing block 39 is made of rubber. As mentioned above, the sliding of telescopic rod 64 and threaded rod 67 in through hole 62 will change the gas volume in gas storage chamber 63. Gas storage chamber 63 transmits gas to gas tank 42 through gas pipe 45. The limiting plate 43, which is slidably connected inside gas tank 42, will... The telescopic mechanism extends and retracts according to changes in the gas flow. When the telescopic rod 64 locks the blade stalk 13, the gas tank 42 adjusts and fixes the position of the limiting plate 43 via gas transmission. During the extension and retraction of the limiting plate 43, the positioning rod 310 drives the adjusting plate 38 to swing. The adjusting plate 38 rotates around the adjusting rod 37, controlling the distance between the adjusting plate 38 located inside the air hole 35 and the rotating plate 73, thereby adjusting the maximum rotation limit of the rotating plate 73. When the tire head is small, the distance to the blade stalk 13 is relatively small, the sliding distance of the telescopic rod 64 increases, and the gas storage chamber 63... More gas is drawn from the gas tank 42 through the trachea 45. At this time, the limiting plate 43 retracts a distance into the gas tank 42. The limiting plate 43 drives the adjusting plate 38 to rotate around the adjusting rod 37 through the positioning rod 310. The adjusting plate 38 moves closer to the rotating plate 73, thereby reducing the speed at which the gas in the telescopic hole passes through the air hole 35. This reduces the force and speed at which the forceps body 1 pulls the fetal head, protecting both the fetus and the mother. The same principle applies when the fetal head is large. The damping mechanism 4 adjusts the pulling force and speed according to the size of the fetal head, making it very convenient and safe to use.

[0045] The shearing component 5 includes a sliding hole 51 located at the end of the traction box 32 away from the air hole 35. A limiting groove 52 is located at the end of the traction box 32 at the sliding hole 51 away from the piston hole 33. A sliding rod 53 is slidably connected within the sliding hole 51. A limiting rod 54 is fixedly connected to the end of the sliding rod 53 near the limiting groove 52. The limiting rod 54 is located inside the limiting groove 52 and slidably connected to it. A fixed shear 55 is fixedly connected to the end of the sliding rod 53 near the forceps body 1. A support rod 56 is fixedly connected to the sliding rod 53 below the fixed shear 55. A rotating shear 57 is rotatably connected to the periphery of the support rod 56. A driving component 8 is provided inside the sliding rod 53, capable of driving the rotating shear 57 to rotate around the support rod 56. Component 8 includes a drive hole 81 located in the center of the limiting rod 54, a rope hole 82 located in the center of the sliding rod 53 near the fixed shear 55, the rope hole 82 being connected to the drive hole 81, a drive rod 83 being fixedly connected to the bottom of the inner wall of the drive hole 81, a torsion spring 84 being fixedly connected to the outer wall of the drive rod 83, a winch 85 being fixedly connected to the end of the torsion spring 84 away from the drive rod 83, a rope 86 being fixedly connected to the outer wall of the winch 85, the rope 86 being fixedly connected to the rotating shear 57 through the rope hole 82, a rotating cylinder 87 being fixedly connected to the end of the winch 85 away from the inner wall of the drive hole 81, the end of the rotating cylinder 87 away from the winch 85 being located outside the limiting rod 54, and a handle 88 being fixedly connected to the end of the rotating cylinder 87 away from the winch 85.

[0046] During childbirth, issues such as a large fetal head may lead to damage to the birth canal, including perineal tears, vaginal wall tears, and cervical tears, thus requiring an episiotomy. In this case, the limiting rod 54 on one side of the traction box 32 is pushed into the limiting groove 52 and slids, causing the sliding rod 53 to slide within the sliding hole 51. The end of the sliding rod 53 away from the piston rod 34 is brought close to the mother's perineum. The handle 88 is turned, causing the winch 85 to slide within the drive hole 81. The rotation of the winch 85 retracts the rope 86, which in turn... Rotating shear 57 rotates, and at this time, rotating shear 57 works with fixed shear 55 to perform episiotomy on the mother. When the handle 88 is released, the handle 88 and winch 85 reset and loosen the rope 86, the shearing piece 5 opens, and then the sliding rod 53 retracts. Since different mothers have different delivery processes and the distance between the traction box 32 and the perineum is different, it is necessary to manually adjust the position of the fixed shear 55 and the perineum, and visually observe the episiotomy process. The combination of episiotomy and traction makes it more convenient to deliver the baby and perform episiotomy of the birth canal. It is very convenient and safe to use.

[0047] Example 2

[0048] The damping mechanism 4 is removed. An electromagnet 9 is fixedly connected to the inner wall of the air storage chamber 63. A moving groove 91 is opened on the inner wall of the air hole 35. The moving groove 91 is located on the side of the rotating plate 73 away from the fixed rod 71. An electromagnetic block 92 is slidably connected in the moving groove 91. The distance that the telescopic rod 64 slides in the air storage chamber 63 is detected by the electromagnet 9, and the sliding position of the electromagnetic block 92 is determined. This changes the maximum opening degree of the rotating plate 73. The use of electrical conduction to control the force and speed of the extension rod 31 in a single pull will avoid problems such as compression and bending during the transmission of air tube 45, which would cause unstable transmission. This makes the transmission of the pulling force more accurate.

[0049] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0050] 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. An obstetric forceps with scissor function for delivery, comprising: Forceps body (1), the forceps body (1) can be divided into left leaf (11) and right leaf (12), the forceps body (1) has a leaf stalk (13) at the tail; Clamping box (2), the clamping box (2) is located at the tail of the leaf stalk (13), the clamping box (2) can clamp the leaf stalk (13) of the forceps body (1) to facilitate medical personnel to pull the fetal head; Its characteristic is that it also includes: The traction mechanism (3) is located at one end of the clamping box (2) and the forceps body (1). The traction mechanism (3) can pull the fetal head by pulling the clamping box (2) and the forceps body (1). Damping mechanism (4), which is located between clamping box (2) and traction mechanism (3), can determine the traction force of traction mechanism (3) on clamping box (2) by clamping force of clamping body (1); The cutting element (5) is located on one side of the clamping box (2) and is capable of performing an episiotomy on the mother when using forceps.

2. Obstetric forceps with scissors function according to claim 1, characterized in that: The clamping box (2) is located on the outer periphery of the tail of the leaf stalk (13). The clamping box (2) is fixedly connected to the baffle (21) on the left leaf (11) side near the forceps body (1). A connecting rod (22) is rotatably connected above the baffle (21). The end of the connecting rod (22) away from the baffle (21) is located on the right leaf (12) side. The end of the connecting rod (22) away from the baffle (21) is provided with a snap-fit ​​part (6) that can snap the clamping box (2) and the leaf stalk (13).

3. Obstetric forceps with scissors function according to claim 2, characterized in that: The snap-fit ​​component (6) includes a snap-fit ​​box (61) fixedly connected to the end of the connecting rod (22) away from the baffle (21). The snap-fit ​​box (61) has a through hole (62) at the end away from the baffle (21). An air storage chamber (63) is opened inside the through hole (62). A telescopic rod (64) is slidably connected to the end of the through hole (62) near the blade stalk (13) of the baffle (21). A magnet (65) is fixedly connected to the side of the telescopic rod (64) near the blade stalk (13). A threaded hole (66) is opened at the end of the telescopic rod (64) away from the magnet (65). A threaded rod (67) is provided inside the threaded hole (66). The threaded rod (67) is threadedly connected to the threaded hole (66). A knob (68) is fixedly connected to the end of the threaded rod (67) away from the telescopic rod (64). The knob (68) is located outside the snap-fit ​​box (61).

4. The obstetric forceps with scissor function according to claim 3, characterized in that: The through hole (62) is square at the end near the petiole (13) and round at the end away from the petiole (13).

5. The obstetric forceps with scissor function according to claim 1, characterized in that: The traction mechanism (3) includes an extension rod (31) fixedly connected to the end of the clamping box (2) away from the forceps body (1). The extension rod (31) is slidably connected to a traction box (32). A piston hole (33) is opened inside the traction box (32). A piston rod (34) is slidably connected inside the piston hole (33). The piston rod (34) is located at the end of the extension rod (31) away from the forceps body (1). An air hole (35) is opened inside the traction box (32). The end of the piston rod (34) away from the extension rod (31) is connected to the end of the extension rod (31) away from the piston rod (34) through the air hole (35). A one-way valve (7) is provided inside the air hole (35) near the end of the extension rod (31).

6. The obstetric forceps with scissor function according to claim 5, characterized in that: The one-way valve (7) includes a fixed rod (71) fixedly connected inside the air hole (35), a torsion spring (72) fixedly connected to the outer wall of the fixed rod (71), a rotating plate (73) fixedly connected to the end of the torsion spring (72) away from the fixed rod (71), and a stop block (74) fixedly connected inside the air hole (35), the stop block (74) being located at the end of the rotating plate (73) away from the extension rod (31).

7. The obstetric forceps with scissor function according to claim 5, characterized in that: The damping mechanism (4) includes a fixed frame (41) fixedly connected to the upper end of the traction box (32). A gas tank (42) is fixedly connected above the fixed frame (41). A limiting plate (43) is slidably connected to the end of the gas tank (42) near the baffle (21). A limiting hole (44) is opened in the center of the limiting plate (43). The end of the gas tank (42) away from the limiting plate (43) is connected to the gas storage chamber (63) through a gas pipe (45).

8. The obstetric forceps with scissor function according to claim 7, characterized in that: An adjustment hole (36) is provided above the traction box (32). The adjustment hole (36) is located between the rotating plate (73) and the piston hole (33). An adjustment rod (37) is fixedly connected to the inner wall of the adjustment hole (36). An adjustment plate (38) is rotatably connected to the outer side of the adjustment rod (37). A positioning rod (310) is fixedly connected to the end of the adjustment plate (38) away from the air hole (35). The positioning rod (310) is located inside the limiting hole (44) and is slidably connected to the limiting hole (44). A sealing block (39) is fixedly connected between the outer wall of the adjustment rod (37) and the inner wall of the adjustment hole (36). The sealing block (39) is made of rubber.

9. The obstetric forceps with scissor function according to claim 5, characterized in that: The shearing component (5) includes a sliding hole (51) located at the end of the traction box (32) away from the air hole (35). The traction box (32) has a limiting groove (52) located at the end of the sliding hole (51) away from the piston hole (33). A sliding rod (53) is slidably connected in the sliding hole (51). A limiting rod (54) is fixedly connected to the end of the sliding rod (53) near the limiting groove (52). The limiting rod (54) is located inside the limiting groove (52) and slidably connected to the limiting groove (52). A fixed shear (55) is fixedly connected to the end of the sliding rod (53) near the forceps body (1). A support rod (56) is fixedly connected to the sliding rod (53) below the fixed shear (55). A rotating shear (57) is rotatably connected to the periphery of the support rod (56). A driving component (8) capable of driving the rotating shear (57) to rotate around the support rod (56) is provided inside the sliding rod (53).

10. The obstetric forceps with scissor function according to claim 9, characterized in that: The driving component (8) includes a driving hole (81) located in the center of the limiting rod (54), and a rope hole (82) located in the center of the sliding rod (53) near the fixed shear (55). The rope hole (82) is connected to the driving hole (81). A driving rod (83) is fixedly connected to the bottom of the inner wall of the driving hole (81), and a torsion spring (84) is fixedly connected to the outer wall of the driving rod (83). The end of the torsion spring (84) away from the driving rod (83) is fixedly connected to... A winch (85) is connected to the winch (85), and a rope (86) is fixedly connected to the outer wall of the winch (85). The rope (86) is fixedly connected to the rotating shear (57) through the rope hole (82). A rotating cylinder (87) is fixedly connected to the inner wall of the winch (85) away from the drive hole (81). The rotating cylinder (87) is located outside the limit rod (54) at the end away from the winch (85). A handle (88) is fixedly connected to the rotating cylinder (87) at the end away from the winch (85).