Gynecological assisted delivery device
By covering the silicone sleeve on the outer surface of the pliers head of the pliers and equipped with a pressure control unit, the problems of easy clamping and poor safety of the traditional pliers are solved, achieving higher safety and lower risk of damage.
Patent Information
- Application Number
- CN202010394686.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2020-05-12
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2040-05-12
AI Technical Summary
Traditional forceps have a simple structure and are prone to clamping the fetal and uterine tissue, resulting in neonatal complications and maternal uterine damage, and are poor in safety.
A gynecological assisted delivery device is designed, including a forceps body and a pressure control unit. The outer surface of the clamp head of the clamp body is covered with a silicone sleeve to increase the contact area and reduce the risk of scratching; the pressure control unit monitors the clamping force in real time through a micro pressure sensor, signal converter and digital display, helping medical staff adjust the clamping degree.
It improves the safety of forceps, reduces the risk of damage to the fetus and maternal uterine tissue, and ensures the safety of the fetus and maternal uterine tissue.
Smart Images

Figure CN111557718B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of medical devices, and in particular to a gynecological auxiliary delivery device. Background Art
[0002] Forceps is an instrument that can be used to assist mothers in delivering a fetus. Specifically, forceps clamp the fetal head and pull the fetal head to move outside the mother's uterus, shortening the delivery process and terminating the pregnancy as soon as possible to relieve the mother's pain and ensure the safety of the fetus. Forceps is one of the important means to solve the problem of dystocia caused by fetal head presentation and improve the survival rate of newborns. It is of great significance to solve clinical problems such as macrosomia, fetal distress and congenital deficiencies of mothers.
[0003] However, traditional forceps have a simple structure and can easily injure the fetus during delivery, causing multiple complications in the newborn, such as brachial plexus injury, clavicle fracture, forceps marks, facial epidermal ulceration, and neonatal asphyxia. In addition, during the process of clamping the fetus to deliver the fetus, the forceps can easily scratch the mother's uterine tissue and cause damage to the uterine tissue. The safety of forceps is poor, which greatly affects the health of the newborn and the mother, and at the same time increases the economic burden on the newborn's family. Summary of the invention
[0004] Based on this, it is necessary to provide a gynecological assisted delivery device to address the technical problem of poor safety.
[0005] A gynecological assisted delivery device, which includes a forceps body and a pressure control unit. The forceps body includes two symmetrical and cross-arranged forceps bodies, the forceps body includes a forceps head, a forceps arm and a forceps handle, the forceps head, the forceps arm and the forceps handle are connected in sequence, the forceps head is an arc-shaped structure and its outer surface is covered with a silicone sleeve, the two forceps heads are used together to clamp the fetal head, the two forceps arms are swingably connected, the two forceps handles are elastically connected by a spring, the forceps handle is used to bear force and drive the forceps arms and the forceps head to swing to clamp the fetal head, and a accommodating cavity is opened in the forceps body, and the accommodating cavity extends from the forceps head to the forceps handle along the length direction of the forceps body. The pressure control unit includes a micro pressure sensor, a signal converter and a digital display. The micro pressure sensor and the signal converter are respectively accommodated in the accommodating cavity. The input end of the micro pressure sensor abuts against the inner surface of the silicone sleeve on the side of one of the pliers heads facing the other pliers head. The output end of the micro pressure sensor is electrically connected to the input end of the signal converter. The digital display is installed on the pliers handle and is electrically connected to the output end of the signal converter. The digital display is used to display the pressure of the pliers heads on the fetal head.
[0006] In one of the embodiments, a plurality of recessed holes are provided on the surface of the silicone sleeve on the side of one of the pliers heads facing away from the other pliers head, and the recessed holes are used to accommodate anti-inflammatory liquid.
[0007] In one of the embodiments, a avoidance hole is provided on the pliers head.
[0008] In one embodiment, the number of the avoidance holes is two, and the two avoidance holes are arranged side by side on the pliers head.
[0009] In one of the embodiments, the ratio of the projection area of the avoidance hole along the swing direction of the clamp head to the projection area of the clamp head along the swing direction of the clamp head is between 2:3 and 5:6.
[0010] In one of the embodiments, the ratio of the projection area of the avoidance hole along the swing direction of the clamp head to the projection area of the clamp head along the swing direction of the clamp head is 5:6.
[0011] The above-mentioned gynecological assisted delivery device improves the softness of the surface of the forceps by coating the outer surface of the forceps head with a silicone sleeve, increases the contact area between the surface of the forceps and the uterine tissue of the fetus and the parturient, thereby reducing the possibility of the forceps head scratching or injuring the fetus and the uterine tissue of the parturient, and improving the safety of the forceps; by setting a pressure control unit, the clamping force of the forceps on the fetus can be monitored in real time, so that medical personnel can adjust the clamping degree of the forceps according to the size of the clamping force to avoid clamping the skin or bones of the fetus, thereby further improving the safety of the use of forceps to ensure the safety of the fetus and the parturient. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a schematic diagram of the structure of a gynecological auxiliary delivery device in one embodiment;
[0013] Figure 2 A schematic diagram of an exploded structure of a gynecological auxiliary delivery device in one embodiment;
[0014] Figure 3 is a schematic structural diagram of a pressure control unit in one embodiment;
[0015] Figure 4 for Figure 1 A schematic diagram of a partially enlarged structure of part A in the illustrated embodiment;
[0016] Figure 5 It is a schematic diagram of the structure of a gynecological auxiliary delivery device in another embodiment. DETAILED DESCRIPTION
[0017] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.
[0018] Please also read Figures 1 to 3 The present invention provides a gynecological auxiliary delivery device 10, which includes a forceps body 100 and a pressure control unit 200. The forceps body 100 includes two symmetrical and cross-arranged forceps bodies 110, the forceps body 110 includes a forceps head 111, a forceps arm 112 and a forceps handle 113, the forceps head 111, the forceps arm 112 and the forceps handle 113 are connected in sequence, the forceps head 111 is an arc-shaped structure and its outer surface is covered with a silicone sleeve 120, the two forceps heads 111 are used to clamp the fetal head together, the two forceps arms 112 are swingably connected, the two forceps handles 113 are elastically connected by a spring 114, the forceps handle 113 is used to bear force and drive the forceps arms 112 and the forceps head 111 to swing to clamp the fetal head, and a accommodating cavity 115 is opened in the forceps body 110, and the accommodating cavity 115 extends from the forceps head 111 to the forceps handle 113 along the length direction of the forceps body 110. The pressure control unit 200 includes a micro pressure sensor 210, a signal converter 220 and a digital display 230. The micro pressure sensor 210 and the signal converter 220 are respectively accommodated in the accommodating cavity 115. The input end of the micro pressure sensor 210 abuts against the inner surface of the silicone sleeve 120 on one clamp head 111 facing the other clamp head 111. The output end of the micro pressure sensor 210 is electrically connected to the input end of the signal converter 220. The digital display 230 is installed on the clamp handle 113 and is electrically connected to the output end of the signal converter 220. The digital display 230 is used to display the pressure of the clamp head 111 on the fetal head.
[0019] The above-mentioned gynecological auxiliary delivery device 10 improves the softness of the surface of the forceps by coating the outer surface of the forceps head 111 with a silicone sleeve 120, increases the contact area between the forceps surface and the fetus and the uterine body tissue of the parturient, thereby reducing the possibility of the forceps head 111 scratching or bruising the fetus and the uterine body tissue of the parturient, and improves the safety of the forceps; by setting up a pressure control unit 200, the clamping force of the forceps on the fetus can be monitored in real time, so that medical personnel can adjust the clamping degree of the forceps according to the size of the clamping force to avoid clamping the skin or bones of the fetus, thereby further improving the safety of the use of forceps to ensure the safety of the fetus and the parturient.
[0020] The working principle of the above-mentioned gynecological auxiliary delivery device is as follows: during the delivery process of a parturient, when a head position is difficult to deliver or a fetal asphyxia is caused by a prolonged delivery process, the medical staff holds the forceps body 100 and wraps the two forceps heads 111 around the periphery of the fetal head, and then presses the two forceps handles 113 to reduce the distance between the two forceps handles 113. At this time, the spring 114 between the two forceps handles 113 is compressed, and the elastic potential energy of the spring 114 increases. Since the two forceps bodies 110 are arranged crosswise, while the distance between the two forceps handles 113 is reduced, the distance between the two forceps heads 111 is also reduced, so that the two forceps heads 111 are respectively in contact with the fetal head. In this way, by pulling the forceps handles 113 in a direction away from the parturient's uterine body, the fetus can be delivered from the parturient, thereby shortening the delivery process and saving the lives of the fetus and the parturient. During this process, when the clamp head 111 contacts the fetus' head, the clamp head 111 generates pressure on the fetus' head. Similarly, the fetus' head will generate a reaction force on the clamp head 111. After receiving the reaction force, the micro pressure sensor 210 transmits the reaction force to the signal converter 220, and finally displays it on the digital display 230, so that the medical staff can adjust the pressing amplitude of the clamp handle 113 according to the fetus's skeletal development and the pressure threshold it can withstand, so as to reduce the damage to the fetus's bones and skin. After the fetus is delivered, the medical staff only needs to loosen the clamp handle 113, and the force on the spring 114 is released. The spring 114 will restore its elastic deformation and drive the two clamp bodies 110 to reset respectively. In this way, the distance between the two clamp heads 111 increases, so as to facilitate the removal of the forceps from the newborn's head.
[0021] The forceps body 100 is used to clamp the fetal head under the action of external force, and pull the fetus out of the parturient's uterus under the traction of external force, so as to facilitate the smooth delivery of the fetus. It should be noted that the two forceps bodies 110 disclosed in the present invention are symmetrical and cross-arranged, which means that the center parts of the forceps arms 112 of the two forceps bodies 110 are hinged. In this way, according to the principle of lever, when the two forceps handles 113 are pressed or released, the distance between the ends of the forceps heads 111 of the two forceps bodies 110 will increase or decrease, thereby achieving the purpose of clamping the fetal head. In one embodiment, the forceps head 111, the forceps arms 112 and the forceps handles 113 are integrally formed. In this way, the connection strength between the forceps head 111, the forceps arm 112 and the forceps handle 113 is increased, that is, the stability of the forceps body 110 structure is improved to extend the service life of the forceps; furthermore, by integrally forming the forceps head 111, the forceps arm 112 and the forceps handle 113, only one mold is needed to produce and process the forceps body 110, which greatly improves the production efficiency of the forceps.
[0022] In one embodiment, the surfaces of the two clamp heads 111 facing each other have arc-shaped curved surfaces, and the silicone sleeve 120 covers the curved surfaces. In this way, the curved clamp heads 111 with the silicone curved surfaces can better clamp the fetus' head, and pull the fetus out of the parturient's uterus under external traction, so as to facilitate smooth delivery of the fetus.
[0023] In one embodiment, the accommodating cavity 115 is provided in the clamp body 110, that is, the accommodating cavity 115 is provided in the hollow interior of the clamp body 110. The micro pressure sensor 210 and the signal converter 220 are respectively accommodated in the accommodating cavity 115, that is, the micro pressure sensor 210 and the signal converter 220 are respectively accommodated in the interior of the clamp body 110. Since the outer surface of the clamp head 111 is covered with a silicone sleeve 120, the silicone sleeve 120 has insulation performance, and the micro pressure sensor 210 and the signal converter 220 are respectively accommodated in the interior of the clamp body 110, in this way, the current generated by the micro pressure sensor 210 and the signal converter 220 when working does not enter the uterine body tissue of the parturient, and does not contact the uterine body tissue of the parturient, so as to ensure the normal operation of the gynecological auxiliary delivery device, so as to better pull the fetus out of the uterine body of the parturient, so as to facilitate the smooth delivery of the fetus.
[0024] In order to prevent the forceps head 111 from excessively squeezing the ears, eyes, nose and other organs of the fetus, in one embodiment, a avoidance hole 116 is provided on the forceps head 111. In one embodiment, the avoidance hole 116 is an elliptical structure. The avoidance hole 116 runs through the forceps head 111. Preferably, the number of the avoidance holes 116 is two, that is, each forceps head 111 is provided with two avoidance holes 116, and the two avoidance holes 116 are provided side by side on the forceps head 111. By providing the avoidance holes 116 on the forceps head 111, during the process of forceps delivery, when the forceps head 111 clamps the ears, eyes, nose and other facial organs of the fetus, the angle of the forceps can be adjusted so that the ears, eyes and nose are exposed from the avoidance holes 116, so as to prevent the forceps head 111 from squeezing the ears, eyes and nose and other organs of the fetus. In one embodiment, the ratio of the projection area of the avoidance hole 116 along the swing direction of the pliers 111 to the projection area of the pliers 111 along the swing direction of the pliers 111 is between 2:3 and 5:6. That is to say, the avoidance hole 116 is opened in the middle area of the pliers 111, the opening area of the avoidance hole 116 is smaller than the arc surface area of the surface of the pliers 111, and the ratio of the opening area of the avoidance hole 116 to the arc surface area of the surface of the pliers 111 is between 2:3 and 5:6. It should be noted that the swing direction of the pliers 111 refers to the movement direction of the pliers 111 when the two pliers 111 are close to or away from each other. Preferably, in one embodiment, the ratio of the projection area of the avoidance hole 116 along the swing direction of the pliers 111 to the projection area of the pliers 111 along the swing direction of the pliers 111 is 5:6. It can be understood that the opening area on the clamp head 111 is relatively large. In this way, while ensuring that the clamp head 111 has sufficient strength and fully covers and clamps the fetal head, it avoids the fetal mouth, ears, eyes, nose and other organs to the greatest extent, so as to reduce the impact of forceps delivery on the fetus. It should be noted that the shape and structure of the silicone sleeve 120 of the present invention are compatible with the shape and structure of the clamp head 111. In this way, when the silicone sleeve 120 is covered on the clamp head 111, the inner surface of the silicone sleeve 120 is tightly attached to the outer surface of the clamp head 111, thereby improving the stability of the connection between the silicone sleeve 120 and the clamp head 111, and avoiding wrinkles caused by the silicone sleeve 120 and crushing of the fetal skin. For the forceps head 111 with the avoidance hole 116, the forceps head 111 can be immersed in the silicone liquid to facilitate the silicone liquid to evenly coat the surface of the forceps head 111. After the silicone liquid cools down, the outer surface of the forceps head 111 can be covered with the silicone sleeve 120, thereby realizing the setting of the silicone sleeve 120 to reduce the processing difficulty of the forceps.
[0025] In one embodiment, the forceps handle 113 is provided with anti-slip grooves 117. By providing the anti-slip grooves 117 on the forceps handle 113, the specific surface area of the forceps handle 113 is increased. In this way, when the medical staff holds the forceps handle 113, the friction between the medical staff's hand and the forceps handle 113 is relatively large, thereby avoiding the occurrence of forceps slipping during the operation. While accelerating the smooth delivery of the fetus, it reduces the possibility of straining the uterine body tissue of the parturient due to the rapid opening of the forceps in the case of slipping, thereby improving the safety of the operation.
[0026] In one embodiment, the spring 114 is a compression spring. One end of the spring 114 is welded to one clamp handle 113, and the other end of the spring 114 is welded to the other clamp handle 113. In other words, the spring 114 is located between the two clamp handles 113, and the two ends of the spring 114 are respectively welded to the two clamp handles 113. In this way, the fixed connection between the spring 114 and the two clamp handles 113 can be ensured by welding, so that the structure of the entire forceps body 100 is stable and firm.
[0027] In one embodiment, the connection between the clamp handle 113 and the clamp arm 112 has an arc-shaped transition portion 118. By providing the arc-shaped transition portion 118 at the connection between the clamp handle 113 and the clamp arm 112, the width of the arc-shaped transition portion 118 facing the clamp head 111 is greater than the width of the arc-shaped transition portion 118 near the end 111 of the clamp handle 113, and the surface of the arc-shaped transition portion 118 is smoothed. In this way, the arc-shaped transition portion 118 reduces the force of the forceps on the cervix of the parturient during the process of inserting the forceps into the cervix of the parturient or pulling the fetus away from the uterine body through the cervix. In other words, the scratching of the forceps on the cervix of the parturient is reduced, thereby further improving the safety of the operation.
[0028] See also Figure 4 In one embodiment, a plurality of recessed holes 121 are provided on the surface of the silicone sleeve 120 on one clamp head 111 facing away from the other clamp head 111, and the recessed holes 121 are used to contain anti-inflammatory liquid. In other words, a plurality of recessed holes 121 are provided on the surface of the silicone sleeve 120 on the outer side of the clamp head 111. In this way, before the operation, the outer side surfaces of the two clamp heads 111 of the forceps can be sprayed with anti-inflammatory liquid respectively, so that the anti-inflammatory liquid can fully fill the recessed holes 121, and then the forceps can be extended into the uterus of the parturient to clamp the head of the fetus. In this process, as the silicone sleeve 120 on the outer surface of the clamp head 111 rubs against the intrauterine tissue of the parturient, the anti-inflammatory liquid filled in the recessed holes 121 will be coated on the intrauterine tissue of the parturient, so as to achieve anti-inflammation of the intrauterine tissue of the parturient, so as to prevent the parturient from having problems such as inflammation of the intrauterine appendages after delivery, and ensure the health of the parturient.
[0029] Furthermore, the surface of the silicone sleeve is also provided with a number of medical collagen sponge balls, each of which is correspondingly accommodated in a concave hole and fixedly connected to the hole wall of the concave hole, and the corresponding part of each medical collagen sponge ball block protrudes from the opening of the concave hole. For example, each medical collagen sponge ball block is correspondingly filled in a concave hole and fixedly connected to the hole wall of the concave hole, and the corresponding part of each medical collagen sponge ball block protrudes from the opening of the concave hole. In this embodiment, the medical collagen sponge is made of collagen obtained by biological purification using bovine Achilles tendon as raw material, which is a white sponge-like solid and sterilized by cobalt 60 radiation. On the one hand, the medical collagen sponge ball block can be used for filling surgical residual cavities, stopping bleeding on wounds, and promoting wound healing. On the other hand, the medical collagen sponge ball block can absorb the anti-inflammatory solution in advance, so that when the forceps are inserted into the uterus of the parturient to clamp the fetal head, as the silicone sleeve on the outer surface of the forceps head rubs against the intrauterine tissue of the parturient, the part of the medical collagen sponge ball block protruding from the opening of the concave hole will be squeezed, and the anti-inflammatory solution inside it will contact the intrauterine tissue of the parturient, thereby achieving anti-inflammation of the intrauterine tissue of the parturient, preventing the parturient from having problems such as inflammation of the intrauterine adnex after delivery, and ensuring the health of the parturient.
[0030] See also Figure 5 In one embodiment, a suction cup 130 is further provided between the two forceps bodies 110, and the suction surface of the suction cup 130 faces away from the forceps handle 113, and the suction cup 130 is used to suck the fetal head. By providing the suction cup 130 between the two forceps bodies 110, during the process of forceps delivery, while the two forceps heads 111 clamp the fetal head, the suction cup 130 can also suck the fetal head, thereby increasing the contact area between the forceps and the fetal head. In other words, under the condition of ensuring the safety of the fetus, the force of the forceps on the fetal head is increased to prevent the fetal head from escaping from the forceps, thereby accelerating the delivery process.
[0031] The pressure control unit 200 is used to monitor the pressure of the forceps head 111 on the fetal head, so as to facilitate the medical staff to adjust the clamping degree of the forceps. Specifically, during the process of forceps delivery, the forceps head 111 clamps the fetal head, and while the forceps head 111 exerts pressure on the fetal head, the fetal head exerts a reaction force on the forceps head 111, and the reaction force is transmitted to the input end of the micro pressure sensor 210 via the silicone sleeve 120 inside the forceps head 111. In this embodiment, the input end of the micro pressure sensor 210 has a sensing diaphragm 211, which is arranged between the clamp head 111 and the silicone sleeve 120 and is electrically connected to the internal processor of the micro pressure sensor 210. When the reaction force acts on the sensing diaphragm 211, the sensing diaphragm 211 will produce a micro displacement proportional to the reaction force, thereby causing the resistance of the micro pressure sensor 210 to change. The electronic circuit inside the micro pressure sensor 210 detects this change, transmits the electrical signal to the signal converter 220, and the signal converter 220 converts the electrical signal into a digital signal, which is finally displayed on the digital display 230, so that medical personnel can understand the pressure of the clamp head 111 on the fetal head.
[0032] Preferably, the digital display is installed on the handle of one pliers body and the digital display is located on the side of the handle of one pliers body facing away from the handle of the other pliers body, so that it is convenient for the doctor user to observe the value on the digital display. Preferably, the digital display is a plate-like structure and its shape and structure are adapted to the surface of the pliers handle, so that it is convenient to install and set the digital display. Furthermore, a mounting groove is provided on the surface of the pliers handle, and the shape and structure of the mounting groove are adapted to the digital display. The depth of the mounting groove is equal to the thickness of the digital display. The digital display is accommodated in the mounting groove and connected to the pliers handle such as by snap-on connection, screw connection or bonding. In this way, the overall surface of the pliers handle can be neat and orderly, and the doctor user will not be affected when using it, and the digital display will not be damaged due to excessive force on the pliers handle by the doctor user.
[0033] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0034] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.
Claims
1. A gynecological auxiliary delivery device, characterized in that: It comprises a forceps body and a pressure control unit, wherein the forceps body comprises two symmetrical and cross-arranged forceps bodies, wherein the forceps body comprises a forceps head, a forceps arm and a forceps handle, wherein the forceps head, the forceps arm and the forceps handle are connected in sequence, wherein the forceps head is an arc surface structure and its outer surface is covered with a silicone sleeve, wherein the two forceps heads are used together to clamp the fetal head, wherein the two forceps arms are swingably connected, wherein the two forceps handles are elastically connected via a spring, wherein the forceps handle is used to bear force and drive the forceps arms and the forceps head to swing to clamp the fetal head, wherein a receiving cavity is provided in one of the forceps bodies, wherein the receiving cavity extends from the forceps head to the forceps handle along the length direction of the forceps body; The pressure control unit includes a micro pressure sensor, a signal converter and a digital display, the micro pressure sensor and the signal converter are respectively accommodated in the accommodating cavity, the input end of the micro pressure sensor is in contact with the inner surface of the silicone sleeve on one side of the clamp head facing the other clamp head, the output end of the micro pressure sensor is electrically connected to the input end of the signal converter, the digital display is installed on the clamp handle and is electrically connected to the output end of the signal converter, and the digital display is used to display the pressure of the clamp head on the fetal head; A plurality of recessed holes are provided on the surface of the silicone sleeve on the side of one of the pliers heads facing away from the other pliers head, and the recessed holes are used to contain anti-inflammatory liquid medicine; The clamp head is provided with a avoidance hole.
2. The gynecological delivery aid device according to claim 1, characterized in that: The number of the avoidance holes is two, and the two avoidance holes are arranged side by side on the clamp head.
3. The gynecological delivery aid according to claim 1, characterized in that: The ratio of the projection area of the avoidance hole along the swing direction of the clamp head to the projection area of the clamp head along the swing direction of the clamp head is between 2:3 and 5:
6.
4. The gynecological delivery aid according to claim 1, characterized in that: The ratio of the projection area of the avoidance hole along the swing direction of the clamp head to the projection area of the clamp head along the swing direction of the clamp head is 5:6.
Citation Information
Patent Citations
Safe type obstetric forceps
CN205994555U
Novel woman obstetrician practise midwifery pincers
CN207152637U
Gynecological auxiliary delivery device
CN212592362U
Cited By
Adjustable obstetric forceps for assisting clinical production in obstetrics and gynecology department
CN121400946A