Obstetrical side cutting device

Abstract

The invention discloses an obstetrical lateral cutting device, which relates to the technical field of medical instruments and comprises a pair of lateral cutting scissors which comprises a first cutter head, a second cutter head, cutter handles distributed and fixed at one end of the first cutter head and one end of the second cutter head, and a central column hinged with the first cutter head and the second cutter head at the same time; the buffer unit sleeves and is fixed on the outer wall of the first tool bit; the buffer unit comprises a buffer pad, a pair of pressure plates hinged to one side of the buffer pad, and plug pins penetrating through the pressure plates at the same time. The beneficial effects are that fetus protection, instant hemostasis and multi-stage hemostasis effects are realized through the buffer unit, the buffer pad is in an arc-shaped tip shape and can be effectively inserted into a gap between the head of a fetus and the inner wall of a birth canal, and the folded isolation film forms a physical barrier and can prevent the first cutter head from contacting with the head of the fetus, so that the fetus can be prevented from being damaged. The operation step of blocking and protecting fingers of a doctor in a traditional operation is eliminated, the operation complexity is remarkably reduced, and the operation safety is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a obstetric lateral cutting device. BACKGROUND

[0002] As an important surgical intervention for assisting natural delivery, the perineal lateral cutting in obstetrics has experienced an evolution process from empirical operation to standardization and specification. Modern lateral cutting focuses on achieving dilation of the birth canal by cutting open the tissue while ensuring the safety of mother and baby. However, with the increasing requirements for surgical precision and safety, traditional lateral cutting instruments, such as skewed scissors, while being able to adapt to the anatomical features of the perineum and facilitate cutting, have gradually highlighted their limitations in terms of hemostatic efficiency, fetal protection, and operational convenience. At the same time, although electrosurgical equipment is widely used in other surgical fields and has good hemostatic effect, its application in lateral cutting is strictly limited, mainly due to the potential risk of irreversible damage to the fetus caused by its thermal effect, which may cause fetal injury and infection, or even death. Therefore, it is an urgent clinical need to develop a lateral cutting device that combines safety and immediate hemostatic function based on the original lateral cutting instrument.

[0003] The existing lateral cutting technology has many technical bottlenecks, which restrict the improvement of surgical efficiency and safety. In terms of hemostasis, the traditional lateral cutting scissors cannot provide immediate hemostasis after cutting open the tissue, and rely on additional gauze compression hemostasis operation, which not only prolongs the operation time, but also may cause an increase in maternal blood loss due to insufficient hemostasis, and a risk of perineal hematoma due to insufficient compression. In terms of fetal protection, during the lateral cutting operation, the doctor needs to constantly block the scissors with his fingers to protect the fetal head, thus increasing the complexity of the operation and limiting the doctor's operational precision and concentration. After the fetus is delivered, if the incision is in an area with abundant blood vessels and active bleeding points, the traditional compression method still needs to be relied on for treatment. In terms of operational precision, the existing technology requires maintaining a 45-degree safe cutting angle during lateral cutting. Once the blade moves or deviates from the original position, it may cause damage to important structures such as the anal sphincter, perineal blood vessels, and nerves, leading to serious complications such as postoperative fecal incontinence and persistent pain. In addition, the use of a large amount of gauze consumables not only increases the medical cost, but also may affect the continuity of the operation due to frequent replacement. SUMMARY

[0004] In view of the above or existing problems in the prior art, the present application is proposed.

[0005] Therefore, the purpose of the present application is to provide an obstetric lateral cutting device that can solve the problems mentioned in the background art.

[0006] To solve the above technical problems, the present application provides the following technical solutions: an obstetric lateral incision device, comprising a lateral incision shear, a handle fixedly distributed at one end of a first blade head and a second blade head, and a center column hingedly connected with the first blade head and the second blade head; A buffer unit is sleeved and fixed to the outer wall of the first blade head; the buffer unit comprises a buffer pad, a pair of pressure plates hingedly connected with one side of the buffer pad, and a bolt penetrating through the inside of each pressure plate.

[0007] As a preferred scheme of the obstetric lateral incision device, the buffer pad comprises a pair of support plates, an elastic strip fixed between the ends of the pair of support plates, a fixing sleeve fixed to the surface of the pair of support plates, a skirt fixed around the support plates, and an isolation film fixed to the other surface of the pair of support plates. The tip portion of the buffer pad is arc-shaped, and the isolation film is folded.

[0008] As a preferred scheme of the obstetric lateral incision device, the pressure plate comprises an inverted buckle fixed to one end thereof.

[0009] As a preferred scheme of the obstetric lateral incision device, the buffer unit further comprises a limiting part; the buffer pad and the pressure plate are hingedly connected through the limiting part.

[0010] As a preferred scheme of the obstetric lateral incision device, the limiting part comprises a sleeve fixed to the other end of the support plate, a plurality of ratchet teeth formed in the inner wall of the sleeve, a rotating shaft fixed to the other end of the pressure plate, and a plurality of ratchet bars fixed to the outer wall of the rotating shaft.

[0011] As a preferred scheme of the obstetric lateral incision device, the rotating shaft is sleeved in the sleeve; the ratchet bars and the ratchet teeth are matched.

[0012] As a preferred scheme of the obstetric lateral incision device, the first blade head is sleeved in the fixing sleeve, and the tip portion of the first blade head abuts against one side of the elastic strip. The cutting edge of the second blade head is in contact with the bolt.

[0013] As a preferred scheme of the obstetric lateral incision device, when the bolt is flexible, the two ends of the bolt are fixed with limiting blocks.

[0014] The application has the advantages that the application realizes the effects of fetal protection, instant hemostasis and multi-stage hemostasis through the buffer unit, the arc-shaped tip shape of the buffer pad can effectively insert into the gap between the fetal head and the inner wall of the birth canal, reduce the shaking deviation in the side cutting operation, ensure the accurate maintenance of the 45-degree cutting angle, and avoid the risk of damage to important structures. The folded isolation film forms a physical barrier to block the contact between the first cutter head and the fetal head, eliminating the operation step of blocking protection by the doctor's fingers in traditional surgery, significantly reducing the complexity of the operation and improving the safety of the operation. The pressure plate and the support plate form a clamp structure through the bolt transmission to apply continuous pressure to both sides of the incision to achieve instant hemostasis, and the limiting part adopts a one-way locking mechanism of ratchet and rack to ensure the stability of the hemostatic compression, avoiding the uncertainty of traditional gauze compression hemostasis and reducing the use of consumables. The reverse press design prevents the device from falling off when the fetus is delivered by fixing the buffer unit, and the elastic strip makes the two support plates self-adaptively adjust according to the change of the incision, cooperating with the unfolding of the folded isolation film, which can effectively maintain the changing incision during hemostatic compression, and is also suitable for treating active bleeding points in the area rich in blood vessels after the fetus is delivered. The application scheme is compatible with the traditional side cutting operation, without the need to relearn complex operation techniques, significantly improving the operation efficiency and safety and reducing the incidence of postoperative complications. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0016] Figure 1 It is a three-dimensional view of the whole structure of the present application.

[0017] Figure 2 It is a three-dimensional view of the buffer unit of the present application.

[0018] Figure 3 It is a three-dimensional view of the buffer unit of the present application. Figure 2 It is a local enlarged view of A of the buffer unit of the present application.

[0019] Figure 4 It is a bottom view of the buffer unit of the present application.

[0020] Figure 5 It is a three-dimensional view of the buffer unit of the present application. Figure 4 It is a sectional view of A-A of the buffer unit of the present application.

[0021] Figure 6 It is a sectional view of B-B of the buffer unit of the present application. Figure 4 It is a sectional view of B-B of the buffer unit of the present application.

[0022] Figure 7 It is a bottom view of the whole structure of the present application.

[0023] Figure 8 For the overall structure of the present application side view.

[0024] In the figure: 1, side cutting scissors; 11, first blade; 12, second blade; 13, handle; 14, center column; 2, buffer unit; 21, buffer pad; 22, pressure plate; 23, bolt; 211, support plate; 212, elastic strip; 213, fixed sleeve; 214, skirt; 215, isolation film; 221, reverse buckle; 24, limiting part; 241, sleeve; 242, ratchet; 243, pivot; 244, ratchet; 231, limiting block. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0026] In the following description, a lot of specific details are set forth in order to give a thorough understanding of the present application, but the present application can also be implemented in other ways different from the description, and those skilled in the art can make similar generalizations without departing from the concept of the present application, therefore the present application is not limited to the specific embodiments disclosed below.

[0027] Secondly, the "one embodiment" or "embodiment" referred to herein means that the specific features, structures or characteristics can be included in at least one implementation of the present application. "In one embodiment" appearing in different places in the specification does not mean the same embodiment, nor is it an embodiment that is separate or selectively excluded from other embodiments.

[0028] Reference Figures 1-8 The present embodiment provides a obstetric lateral cutting device, which comprises a lateral cutting scissors 1, a first blade 11 and a second blade 12, a handle 13 fixed at one end of the first blade 11 and the second blade 12, and a center column 14 hinged with the first blade 11 and the second blade 12. A buffer unit 2 is sleeved and fixed to the outer wall of the first blade 11; the buffer unit 2 comprises a buffer pad 21, a pair of pressure plates 22 hinged with one side of the buffer pad 21, and a bolt 23 penetrating through the inside of each pressure plate 22.

[0029] Further, the buffer pad 21 comprises a pair of support plates 211, an elastic strip 212 fixed between the end portions of the pair of support plates 211, a fixed sleeve 213 fixed to the surface of the pair of support plates 211, a skirt 214 fixed around the support plate 211, and an isolation film 215 fixed to the other surface of the pair of support plates 211. The tip portion of the buffer pad 21 is arc-shaped; the isolation film 215 is folded.

[0030] Further, the pressure plate 22 comprises a reverse buckle 221 fixed to one end thereof.

[0031] Further, the buffer unit 2 further comprises a limiting part 24; the buffer pad 21 and the pressure plate 22 are hinged through the limiting part 24.

[0032] Further, the limiting part 24 comprises a sleeve 241 fixed to the other end of the support plate 211, a plurality of ratchets 242 opened in the inner wall of the sleeve 241, a rotating shaft 243 fixed to the other end of the pressure plate 22, and a plurality of ratchets 244 fixed to the outer wall of the rotating shaft 243.

[0033] Further, the rotating shaft 243 is sleeved in the sleeve 241; the ratchets 244 and the ratchets 242 are matched.

[0034] Further, the first cutter head 11 is sleeved in the fixed sleeve 213, and the tip of the first cutter head 11 abuts against one side of the elastic strip 212. The cutting edge of the second cutter head 12 is in contact with the plug 23.

[0035] Further, when the plug 23 is flexible, the two ends thereof are fixed with limiting blocks 231.

[0036] It should be noted that the perineal episiotomy is an auxiliary surgery performed when the diameter of the birth canal is usually 8-9 cm and the biparietal diameter of the full-term fetal head reaches 9.2-9.8 cm, and the birth canal cannot meet the needs of fetal delivery. The surgery can expand the transverse diameter of the birth canal by 1-2 cm by making a precise cut of 2-3 cm in length at an angle of 45 degrees outside the perineal body, so as to facilitate the smooth passage of the fetal head through the birth canal.

[0037] In an embodiment provided in the present application, the episiotomy scissors 1 are composed of a first cutter head 11 and a second cutter head 12, and a cutter handle 13 at the end of the two cutter heads, the cutter handle 13 is symmetrically distributed, a center column 14 penetrates through the cutter handle 13, and the two cutter heads are hinged with the center column 14 as the center, and the two cutter heads adopt a skew head design and are in a lateral inclination.

[0038] The length of the first cutter head 11 and the second cutter head 12 is usually 4-6 cm, and the skew head design is used to adapt to the anatomical structure of the birth canal.

[0039] Preferably, during the surgery, the range of the incision is precisely controlled to avoid damage to important anatomical structures, to ensure the safety of the mother and the baby, and to ensure postoperative recovery. Therefore, the operator is required to take the midline as the reference, keep the incision at an angle of 45 degrees with the midline, and cut and shear the position. Therefore, the buffer unit 2 is used to stabilize the cutter body to prevent the episiotomy scissors 1 from deviating and shaking.

[0040] The buffer pad 21 is in the shape of a petal with an arc, and the tip of the buffer pad 21 is slightly raised to facilitate insertion into the gap between the fetal head and the inner wall of the birth canal, and the curved structure can fit the shape of the gap to reduce the discomfort of the pregnant woman and protect the fetal head.

[0041] The main support structure of the buffer pad 21 is a pair of adjacent and symmetrical support plates 211, which are hard and can be made of medical-grade high-density polyethylene, polypropylene, polycarbonate, etc., which are highly resistant to bacteria and have excellent chemical and dimensional stability. The surface of the support plate 211 facing the blade is provided with a texture that can effectively adhere to the inner wall of the birth canal where there is a lot of body fluid. An elastic strip 212 is fixed to the end of the support plate 211 facing the tip of the buffer pad 21, and the first blade 11 can push the buffer pad 21 into the gap between the fetal head and the inner wall of the birth canal through the elastic strip 212 and fix the buffer pad 21 through the pressure between them.

[0042] A fixing sleeve 213 is also fixed to the surface of the support plate 211 facing the blade to wrap the side wall of the first blade 11. In addition, the first blade 11 is sandwiched between the two support plates 211, which can reduce the risk of the lateral episiotomy 1 shaking and deviating because the position of the buffer pad 21 is relatively stable at this time. A skirt 214 is also fixed around the support plate 211, which is soft and can be made of medical-grade silicone rubber, thermoplastic elastomer, low-protein medical natural rubber, etc., to transition the hard material of the support plate 211 and increase the pressure surface while avoiding direct contact between the support plate 211 and the fetal head or the inner wall of the birth canal, which can cause unnecessary harm.

[0043] When the lateral episiotomy 1 is not easy to deviate and shake, the difficulty of the operation for the operator can be greatly reduced, ensuring that the cutting is completed in a straight line at a predetermined angle at one time. For pregnant women, the damage to the perineal area, i.e., the area between the vaginal opening and the anus, can be reduced. For the fetus, the birth canal exit is maximized to accommodate the delivery of the fetal head.

[0044] It should be noted that an isolation film 215 is also fixed to the surface of the two support plates 211 away from the blade, which is folded and has a certain toughness to effectively prevent the lateral episiotomy 1 from scratching or bumping the fetal head and reduce the complexity of the operation for the operator. The operator does not need to block his fingers between the fetal head and the lateral episiotomy 1 to protect the fetal head as in the traditional way, which can also avoid excessive pressure on the fetal head caused by the fingers, improve the operator's concentration and energy during the operation, and help control the stability of the cutting trajectory of the lateral episiotomy 1.

[0045] Preferably, the pressure plate 22 is located outside and has two in number, and is hinged with the buffer pad 21, and the pressure plate 22 is symmetrically distributed.

[0046] As an embodiment provided in the present application, the pressure plate 22 and the buffer pad 21 are hinged and unidirectionally limited by the limiting part 24. Specifically, sleeves 241 are fixed at the end of each support plate 211 away from the tip, the sleeves 241 are symmetrically distributed, and an array of ratchets 242 are arranged on the inner wall of the sleeves 241. One end of the pressure plate 22 is fixed with a rotating shaft 243, the rotating shaft 243 can be matched with the inner cavity of the sleeve 241, and the pressure plate 22 can be flipped with the rotating shaft 243 as the center. In addition, an inclined ratchet 244 is fixed on the outer wall of the rotating shaft 243, which can be inserted into the gap between the ratchets 242 from the opening side of the sleeve 241, and can also be directly pulled out of the sleeve 241. When the pressure plate 22 rotates, it can rotate in one direction, and the other direction is locked. In the present application, the rotating direction is the direction towards the buffer pad 21.

[0047] After the lateral incision surgery is completed, a large amount of gauze is usually needed for compression hemostasis. In the present application, the incision sides can be effectively hemostatic under the unidirectional clamping action of the pressure plate 22 and the support plate 211.

[0048] In addition, the ratchet 244 and the end face of the rotating shaft 243 also have a gap d. The gap can make a smooth part of the rotating shaft 243 inserted into the inside of the sleeve 241, so as to ensure the stability and concentricity of the pressure plate 22 when rotating.

[0049] As an alternative embodiment, the pressure plate 22 and the buffer pad 21 are hinged by the limiting part 24. Specifically, sleeves 241 are fixed at the end of each support plate 211 away from the tip, and the sleeves 241 are symmetrically distributed. One end of the pressure plate 22 is fixed with a rotating shaft 243, the rotating shaft 243 can be matched with the inner cavity of the sleeve 241, and the pressure plate 22 can be flipped with the rotating shaft 243 as the center. The two are limited by the friction of the inner and outer wall surfaces, so as to realize the unidirectional clamping action of the pressure plate 22 and the support plate 211, and to stop bleeding.

[0050] Timely and effective hemostasis can reduce the blood pollution of the fetal head. During the delivery process, the blood pollution may be inhaled into the respiratory tract with the first breath of the newborn, especially after the blood pollution is mixed with amniotic fluid, which is easy to form a viscous mixture, which may increase the risk of aspiration pneumonia and respiratory obstruction. Reducing blood pollution can directly reduce the threat of respiratory tract foreign bodies at birth. If the head is covered with a large amount of blood pollution, the skin color observation will be blocked, which may interfere with the rapid judgment of the newborn's hypoxia and circulation state, and delay the necessary first aid. It can also control the unnecessary blood loss of the pregnant woman, reduce the permeation of blood into the tissue space, and reduce the risk of hematoma from the source.

[0051] After the compression hemostasis, the medical staff will suspend the compression hemostasis of the lateral incision and start the delivery of the fetal head. At this time, the incision is squeezed by the fetal head, and the incision is continuously compressed. The physiological compression itself can squeeze the wound blood vessels, reduce the blood loss, and not cause blood loss.

[0052] At the same time, the same buffer pad 21 is also taken out during production, so the reverse buckle 221 is fixed at the other end of the pressure plate 22. The medical staff can press the reverse buckle 221 in the opposite direction by the instrument or hand to prevent the buffer unit 2 from slipping. Because the reverse buckle 221 is arranged at the bottom, it does not occupy the space of the birth canal, or conflict with the direction of the fetal head descending, hinder the smooth passage of the fetal head, prolong the delivery process, or increase the risk of fetal distress. At this time, the compression hemostasis of the pregnant woman can still be performed.

[0053] Because the incision is compressed, the position and size of the incision will change accordingly, so the buffer unit 2 also needs to deform accordingly. On the end of the support plate 211 towards the tip of the buffer pad 21, the same elastic strip 212 is fixed. The elastic strip 212 can deform accordingly when the incision changes, so that the two support plates 211 can expand outward to maintain the compression effect on both sides of the incision. At this time, the isolation film 215 in the folded state also expands accordingly and does not hinder the outward expansion of the two support plates 211.

[0054] When the fetus is delivered, the blood flow in the entire birth canal will be reduced due to uterine contraction, which is the main mechanism of postpartum hemostasis. At this time, the medical staff will immediately reprocess the lateral incision: first, thoroughly clean the wound and check for active bleeding points, and then achieve permanent hemostasis through suturing, which is more thorough than prepartum compression hemostasis. At this time, because the buffer pad 21 still exists in the incision, continuous compression hemostasis is performed, so even if there are active bleeding points, blood loss will not occur. Compared with the traditional method, the risk of blood loss for the pregnant woman can be greatly reduced.

[0055] Finally, it needs to be explained that the plug 23 inside the pressure plate 22 is located at the cutting edge of the second knife head 12. When the plug 23 is made of a relatively hard material, the two knife heads of the lateral incision shears are closed by the fixed sleeve 213 and the plug 23 respectively when the two knife heads shear, and the pressure plate 22 is locked in one direction to generate continuous pressure on both sides of the incision.

[0056] When the plug 23 is soft, the limit block 231 fixed at both ends of the plug 23 can prevent the plug 23 from coming off the pressure plate 22.

[0057] In addition, when the side-cutting operation is performed, the second cutter head 12 will push the first cutter head 11 out of the support plates 211 and cut the pin and the fixing sleeve 213 while the side-cutting scissors 1 are cutting, so as to smoothly take out the side-cutting scissors 1 and leave the buffer unit 2 in the incision.

[0058] The pin and the fixing sleeve 213 can also not be cut, but compared with the direct cutting mode, the effective cutting length during the side-cutting operation will be reduced, and a slightly larger force is required to take out the side-cutting scissors 1.

[0059] It is worth noting that the pressure and shear resistance of the fixing sleeve 213 and the pin 23 determines the maximum pressure of the side-cutting scissors 1, and then determines the maximum clamping pressure of the buffer pad 21 and the pressure plate 22.

[0060] In summary, the present application realizes the effects of fetal protection, immediate hemostasis and multi-stage hemostasis through the buffer unit 2. The buffer pad 21 adopts an arc-shaped sharp end shape, which can effectively insert into the gap between the fetal head and the inner wall of the birth canal, and provide stable support through the support plates 211. The isolation film 215 is folded to form an effective physical barrier to block the direct contact between the first cutter head 11 and the fetal head, eliminating the operation step of blocking the protection of the fetus by the fingers of the doctor in the traditional operation, significantly reducing the complexity of the operation and improving the safety of the operation. The skirt 214 adopts a soft material transition to avoid mechanical damage caused by the direct contact of the hard support plate 211 with the tissue, thereby improving the comfort of the patient.

[0061] The hemostatic function of the device is realized through the cooperation of the pressure plate 22 and the buffer pad 21. When the side-cutting scissors 1 complete the cutting, the second cutter head 12 drives the pressure plate 22 and the support plates 211 to form a clamping structure through the pin 23, so as to apply a continuous compression force to the two sides of the incision to realize the effect of immediate hemostasis. The limiting part 24 adopts a one-way locking mechanism of the ratchet 242 and the ratchet bar 244 to ensure that the pressure plate 22 can only rotate in the clamping direction and cannot be loosened in the reverse direction, thereby ensuring the stability and continuity of the hemostatic compression, and more in line with the hemostatic needs faced by the side-cutting operation, and more targeted.

[0062] In addition, compared with the uncertainty of traditional gauze compression hemostasis, the operation burden of medical staff is reduced and the use amount of gauze consumables is reduced.

[0063] The design of the inverted buckle 221 effectively solves the problem of device falling off during the delivery of the fetus. Medical staff can fix the buffer unit 2 at the incision site by pressing the inverted buckle 221 in reverse, ensuring continuous hemostasis during the dynamic process of fetal delivery. The flexible connection of the elastic strip 212 enables the two support plates 211 to adapt to the size changes of the incision, and cooperate with the unfolding of the folded isolation film 215 to maintain effective compression coverage of the changing incision. It is also suitable for treating active bleeding points in the blood-rich area after fetal delivery, effectively reducing the risk of blood loss in puerpera.

[0064] The device stably wraps the first cutter head 11 through the fixing sleeve 213, significantly reducing the shaking and deviation of the lateral cutting scissors 1 during operation, ensuring the accurate maintenance of the 45-degree cutting angle, and avoiding the risk of damage to important structures such as the anal sphincter, perineal blood vessels and nerves due to positional deviation. Medical staff do not need to relearn complex operation techniques, while significantly improving surgical efficiency and safety, and reducing the incidence of postoperative complications.

[0065] It is important to note that the above embodiments are only used to illustrate the technical solutions of the present application and not to limit it. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced by equivalents without departing from the spirit and scope of the present application, and they should be covered by the scope of the claims of the present application.

Claims

1. An episiotomy device, characterized in that: include, The side-cutting shear (1) includes a first cutter head (11) and a second cutter head (12), a handle (13) distributed and fixed at one end of the first cutter head (11) and the second cutter head (12), and a central column (14) that is hinged to both the first cutter head (11) and the second cutter head (12). A buffer unit (2) is sleeved and fixed to the outer wall of the first cutter head (11); the buffer unit (2) includes a buffer pad (21), a pair of pressure plates (22) hinged to one side of the buffer pad (21), and a pin (23) passing through the interior of each pressure plate (22).

2. The obstetric episiotomy device as described in claim 1, characterized in that: The buffer pad (21) includes a pair of support plates (211), an elastic strip (212) fixed between the ends of the pair of support plates (211), a fixing sleeve (213) fixed to the surface of the pair of support plates (211), a skirt (214) fixed around the support plates (211), and an isolation film (215) fixed to the other surface of the pair of support plates (211). The tip of the buffer pad (21) is arc-shaped; the isolation membrane (215) is folded.

3. The obstetric episiotomy device as described in claim 2, characterized in that: The pressure plate (22) includes an overhang (221) fixed to one end thereto.

4. The obstetric episiotomy device as described in claim 3, characterized in that: The buffer unit (2) also includes a limiting part (24); the buffer pad (21) and the pressure plate (22) are hinged through the limiting part (24).

5. The obstetric episiotomy device as described in claim 4, characterized in that: The limiting part (24) includes a sleeve (241) fixed to the other end of the support plate (211), a plurality of ratchet teeth (242) formed on the inner wall of the sleeve (241), a rotating shaft (243) fixed to the other end of the pressure plate (22), and a plurality of ratchet bars (244) fixed to the outer wall of the rotating shaft (243).

6. The obstetric episiotomy device as described in claim 5, characterized in that: The rotating shaft (243) is sleeved inside the sleeve (241); the ratchet (244) and the ratchet tooth (242) are engaged.

7. The obstetric episiotomy device as described in claim 6, characterized in that: The first cutter head (11) is fitted inside the fixed sleeve (213), and the tip of the first cutter head (11) abuts against one side of the elastic strip (212); The cutting edge of the second cutter head (12) contacts the pin (23).

8. The obstetric episiotomy device as described in claim 7, characterized in that: When the pin (23) is flexible, limit blocks (231) are fixed at both ends.

Images