Device for preventing vaginal tear during delivery

Abstract

The invention discloses a device for preventing vaginal tear during delivery, relates to the technical field of delivery auxiliary instruments, and provides the following scheme that the device comprises a delivery seat mechanism, and a hip supporting frame mechanism is arranged on the front side of the delivery seat mechanism; the top surface of the hip supporting frame mechanism is provided with two perineum tissue traction anti-tearing mechanisms, and the traction ends of the perineum tissue traction anti-tearing mechanisms adhere to the perineum skin of the human body. According to the technical scheme, the delivery chair is arranged, the buttocks supporting frame mechanism is arranged on the front side of the delivery chair, the front side of the buttocks of a producer is placed on the buttocks supporting frame mechanism, the placing posture of the buttocks is changed by adjusting the buttocks supporting frame mechanism, and a perineum tissue traction anti-tearing mechanism is arranged to form a cross traction mode; supporting force is provided for tissue in the perineum area, and vaginal tearing caused by sudden force application after uterine contraction is prevented.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of delivery assisting devices, in particular to a device for preventing vaginal laceration during delivery. BACKGROUND

[0002] During the delivery process, vaginal laceration is a common complication, especially in the second stage of labor, when the fetal head passes through the birth canal, causing great stretching and damage to the pelvic floor muscle tissue and perineum. Vaginal laceration not only brings physical pain to the puerpera, but also affects her postpartum recovery and quality of life. Therefore, it is of great significance to develop a device for preventing vaginal laceration during delivery.

[0003] In the first stage of labor, the birth canal is functionally closed and maintained in place by the combined action of multiple layers of muscle and connective tissue. As the cervix dilates, the vagina maintains its basic diameter of about 2.6 cm. However, in the second stage of labor, when the fetal head descends into the birth canal, it exerts direct pressure on the pelvic floor, causing the vaginal orifice to rapidly expand to about 10 cm, which is the average head diameter of a newborn. This 3.8-fold expansion in diameter and about 15-fold expansion in area occurs in a very short period of time, causing tremendous pressure on the vaginal and perineal tissues.

[0004] Currently, although there are some methods to prevent vaginal laceration, their effects are not exact. For example, perineal massage, hot compress and "manual assistance" delivery techniques have been applied in clinical practice, but have not been proven to significantly reduce the incidence of vaginal laceration. In view of the limitations of existing methods, the present application provides a device for preventing vaginal laceration during delivery. SUMMARY

[0005] In view of the defects in the above background art, the technical solution content of the device for preventing vaginal laceration during delivery is provided.

[0006] It comprises a delivery seat mechanism, the front side of the delivery seat mechanism is provided with a hip support mechanism, the top surface of the hip support mechanism is provided with two groups of perineal tissue traction prevention mechanisms, and the traction end of the perineal tissue traction prevention mechanism is adhered to the human perineal skin; The delivery seat mechanism comprises a base plate, a base fixedly connected to the central area of the upper surface of the base plate, and a hip and waist cushion fixed to the top surface of the base, and the rear end surface of the hip and waist cushion is connected with a backrest inclined backward, the left and right side surfaces of the hip and waist cushion are each fixedly connected with a support rod, and the distal end of the support rod is fixedly connected with a leg rest; The hip support frame mechanism comprises a cross base fixed at the front end surface of the base plate, four servo cylinders hinged at the four ends of the cross base, and an electric push rod fixed at the central position of the upper surface of the cross base, a top rod is fixedly connected to the telescopic shaft of the electric push rod, a metal ball is fixedly connected to the top end of the top rod, a telescopic shaft is fixed to the telescopic end of each servo cylinder, a reverse U-shaped connecting plate is hinged to the end of the telescopic shaft, a placing plate is fixedly connected to the side of the reverse U-shaped connecting plate away from the telescopic shaft, and the top 2 / 3 area of the metal ball is inserted into the bottom surface of the placing plate and is in movable connection with the bottom surface of the placing plate. The perineal tissue pulling anti-tearing mechanism comprises a shell, two servo motors fixedly connected in the inner cavity of the shell, and two rotating wheels outside the shell connected with the output shafts of the servo motors through shaft couplings, the rotating wheels clamp a pulling wire therebetween, and the end of the pulling wire is connected with a medical adhesive tape, and the adhesive surface of the medical adhesive tape is adhered to the perineal skin of the human body.

[0007] In the technical scheme of the device for preventing vaginal tearing during childbirth, preferably: the front side surface of the base plate is provided with a notch for inlaying the cross base, the front side of the hip and waist cushion is provided with an opening for exposing the perineal area, the front side surface of the backrest is in contact with the back of the human body, and the legs of the human body are in a bent and open state, and the top surface of the leg support is in contact with the skin of the calf of the human body.

[0008] In the technical scheme of the device for preventing vaginal tearing during childbirth, preferably: the cross section of the cross base is in the shape of a cross as a whole, and the four ends of the cross base extending outward are connected with the bottom ends of the servo cylinders through shaft pins for the servo cylinders to rotate along the four ends of the cross base.

[0009] In the technical scheme of the device for preventing vaginal tearing during childbirth, preferably: the top end of the telescopic shaft is inserted into the reverse U-shaped connecting plate, and a shaft pin is penetrated through the part where the telescopic shaft and the reverse U-shaped connecting plate coincide with each other; wherein, the servo cylinders are arranged in a ring array around the central axis of the cross base.

[0010] In the technical scheme of the device for preventing vaginal tearing during childbirth, preferably: the bottom surface of the placing plate is fixedly connected with a fixed block, and the bottom surface of the fixed block is provided with a spherical groove for inserting and rotating the metal ball.

[0011] Preferably, in the device for preventing vaginal laceration during childbirth, the top surface of the placement plate is in contact with the front side of the buttocks of the human body in a lying position, the upper surface of the placement plate is connected with a canvas belt on both sides, the canvas belt is provided with a buckle on the section, and the canvas belt is wound and fixed at the root of the thigh of the human body.

[0012] Preferably, in the device for preventing vaginal laceration during childbirth, the bottom surface of the shell is fixedly connected with the front middle area of the top surface of the placement plate, the outer surface of the shell is covered with an end cover through buckling, the front side surface of the end cover is fixedly connected with a positioning block, the inside of the positioning block is provided with a circular hole for the pulling wire to pass through, and the end of the pulling wire away from the medical tape is fixedly connected with a limiting block, the diameter of the limiting block is greater than the diameter of the circular hole in the inside of the positioning block, so as to prevent the pulling wire from being separated from the clamping between the rotating wheels, and the perineal tissue pulling and preventing laceration mechanism is symmetrically arranged on both sides of the central axis of the placement plate.

[0013] Preferably, in the device for preventing vaginal laceration during childbirth, a groove is arranged on the outer circle of the rotating wheels close to each other, so that the pulling wire can pass through the groove between the rotating wheels.

[0014] Preferably, in the device for preventing vaginal laceration during childbirth, the left medical tape is adhered to the right side of the perineal area of the human body, and the right medical tape is adhered to the left side of the perineal area of the human body, so as to form cross-pulling to provide support for the perineal tissue and prevent the vagina from being lacerated due to sudden force after contraction.

[0015] Preferably, in the device for preventing vaginal laceration during childbirth, the side surfaces of the shells close to each other are fixedly connected with guide supports, the inside of the guide supports is provided with through holes for the pulling wire to pass through, so as to guide the pulling direction of the pulling wire.

[0016] According to the above technical scheme, the device for preventing vaginal laceration during childbirth has the following beneficial effects compared with the prior art: In the technical scheme of the present application, the childbirth chair is provided, the hip support mechanism is arranged on the front side of the childbirth chair, the front side of the hips of the producer is placed on the hip support mechanism, the placing posture of the hips is changed by adjusting the hip support mechanism, and the perineal tissue pulling and preventing laceration mechanism is arranged to form cross-pulling to provide support for the perineal tissue and prevent the vagina from being lacerated due to sudden force after contraction. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the description of the embodiments of the present application or the prior art will be briefly introduced and explained. Obviously, the drawings in the following description are only some of the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0018] Figure 1 Overall structure diagram of the device for preventing vaginal laceration during vaginal delivery; Figure 2 Schematic diagram of the delivery seat mechanism; Figure 3 Schematic diagram of the hip support mechanism; Figure 4 Schematic diagram of the placement plate; Figure 5 Schematic diagram of the perineal tissue traction prevention mechanism.

[0019] Appendix Figure 1 - Appendix Figure 5 The corresponding relationship of the components in the above-mentioned drawings is as follows: 1. Delivery seat mechanism; 11. Base plate; 12. Base; 13. Leg support; 14. Support rod; 15. Hip and waist cushion; 16. Backrest; 2. Hip support mechanism; 21. Cross base; 22. Servo cylinder; 23. Telescopic shaft; 24. Inverted U-shaped connecting plate; 25. Metal ball; 26. Top rod; 27. Electric push rod; 28. Placement plate; 29. Canvas belt; 210. Insert buckle; 211. Spherical groove; 212. Fixed block; 3. Perineal tissue traction prevention mechanism; 31. Shell; 32. Servo motor; 33. Positioning block; 34. End cover; 35. Limiting block; 36. Rotary wheel; 37. Groove; 38. Traction wire; 39. Medical adhesive tape; 310. Guide bracket. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the embodiments described below are only some of the embodiments of the present application, and all other embodiments obtained by those skilled in the art without creative labor on the basis of these embodiments also belong to the scope of protection of the present application.

[0021] In order to more clearly explain and illustrate the technical solutions and implementation modes of the present application, the following introduces the specific embodiments preferred for implementing the technical solutions of the present application.

[0022] Embodiment; preferred technical solution of the device for preventing vaginal laceration during delivery: I. Overall structure and assembly of the device: The device is composed of a delivery seat mechanism 1, a hip support frame mechanism 2, and two sets of perineal tissue traction prevention mechanisms 3, which work together to dynamically protect the perineal tissue.

[0023] The specific assembly steps are as follows: Construction of the delivery seat mechanism 1: The base plate 11 is horizontally fixed to the ground with a metal material, and the front end of the base plate is pre-processed with a notch. The base 12 is welded to the central upper surface of the base plate, and high-strength steel is used to support the overall load.

[0024] Hip and waist cushion 15 and backrest 16: The medical silicone hip and waist cushion 15 is fixed on the top of the base by bolts, and a U-shaped opening is provided on the front side of the cushion to expose the perineal area of the pregnant woman. The backrest 16 is connected to the rear end of the cushion through a hinge, with an inclination angle of 110°~120°, and a built-in air pressure adjusting device to adapt to different body shapes.

[0025] Leg support 13 and support rod 14: Two telescopic support rods 14 are welded to the two sides of the cushion, and arc-shaped leg supports 13 are installed at the ends, with a memory sponge layer on the surface. The support rod adjusts the length through a gear structure, so that the pregnant woman's legs are in a 90° flexion and abduction position.

[0026] Installation of the hip support frame mechanism 2: Cross base 21 and servo cylinder 22: The cross-shaped aluminum alloy base 21 is embedded in the notch at the front end of the base plate, and four servo cylinders 22 are hinged at the four ends. The IP67 waterproof level is selected for the electric cylinder, and the thrust range is 0~500N.

[0027] Electric push rod 27 and top rod 26: The electric push rod 27 is vertically installed in the center of the cross base, with a stainless steel top rod 26 welded at the top end of the telescopic shaft. The end of the top rod is processed into a 50mm diameter metal ball 25.

[0028] Linkage structure of the placement plate 28: The telescopic shaft 23 of the four servo cylinders 22 is connected to the bottom of the placement plate 28 through a hinged inverted U-shaped connecting plate 24. The fixed block 212 is welded to the bottom center of the placement plate 28, and the spherical recess 211 is built-in to form a spherical hinge with the metal ball 25, allowing the placement plate 28 to tilt with multiple degrees of freedom.

[0029] Integration of the perineal traction mechanism 3: Housing 31 and servo motor 32: Two sets of ABS engineering plastic housings 31 are symmetrically installed on the front side of the placement plate 28, with two brushless servo motors 32 built-in, with an output torque of 0.5Nm and a adjustable speed of 0~30rpm.

[0030] Rotation wheel 36 and pulling wire 38: the motor output shaft is connected to the rotation wheel 36 through a shaft coupling, and the outer ring of the rotation wheel is processed with a V-shaped groove 37. Two high-strength polyester pulling wires 38 with a diameter of 0.8 mm pass through the groove 37 on the rotation wheel 36, and the ends are connected to medical silicone adhesive tape 39 with a size of 5 cm x 10 cm, and the adhesive layer is low-sensitization acrylate.

[0031] Guide bracket 310 and limit block 35: a nylon guide bracket 310 is installed on the inside of the shell, and the internal through hole guides the pulling wire to go. The distal end of the pulling wire is provided with a limit block 35 with a diameter of 8 mm to prevent the pulling wire from coming off the rotation wheel.

[0032] II. Operation process and function implementation: Maternal position fixation: the puerpera sits on the hip and waist cushion 15, the back is attached to the backrest 16, and the legs are flexed and placed on the leg support 13. Adjust the length of the support rod 14 to make the hip joint abduction 80°~90°.

[0033] The operator wraps the canvas belt 29 around the root of the puerpera's thigh, locks it with the buckle 210, limits the movement of the lower limbs, and disperses the pressure on the hips.

[0034] Dynamic adjustment of hip support: Height adjustment: start the electric push rod 27 to lift the top rod 26, and push the placement plate 28 to the front side of the puerpera's hips. Among them, a contact pressure sensor is arranged in the electric push rod 27, and the threshold value of the contact pressure sensor is set to 15 kPa.

[0035] Angle adjustment: four servo cylinders 22 are stretched and retracted in coordination to adjust the pitch and roll angle of the placement plate 28 within ±15° range through the inverted U-shaped connecting plate 24, and to match the fetal head descent path in real time.

[0036] Perineal traction prevention operation: Adhesive tape positioning: the left medical adhesive tape 39 is pasted on the right side of the perineum 2 cm away from the vaginal orifice, and the right adhesive tape is symmetrically pasted on the left side to form a cross traction layout.

[0037] Traction force control: the servo motor 32 drives the rotation wheel 36 to synchronously wind the pulling wire 38, and the initial traction force is set to 5N, which is dynamically adjusted to a maximum of 20N with the intensity of uterine contraction. The number of rotation wheel revolutions is monitored by an encoder to accurately control the traction distance of 0~10 cm.

[0038] Emergency release: if the fetal head is delivered too fast, the motor is reversed for 0.5 seconds to quickly release the traction force to avoid excessive traction.

[0039] The present invention is not limited to the above-mentioned optimal implementation mode. Anyone should be aware that any structural changes made under the guidance of the present invention, and any technical solutions that are the same or similar to those of the present invention, fall within the scope of protection of the present invention. Finally, it should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no technical significance. Any structural modification, change in proportional relationship or adjustment of size, without affecting the efficacy and purpose that can be achieved by this application, should still fall within the scope of the technical content disclosed in this application.

Claims

1. A device for preventing vaginal tearing during childbirth, comprising a childbirth chair mechanism (1), characterized in that: The front side of the delivery chair mechanism (1) is provided with a buttocks support frame mechanism (2), the top surface of the buttocks support frame mechanism (2) is provided with two sets of perineal tissue pulling and tearing prevention mechanisms (3), and the pulling ends of the perineal tissue pulling and tearing prevention mechanisms (3) are adhered to the perineal skin of the human body; The delivery chair mechanism (1) includes a base plate (11), a base (12) fixedly connected to the central area of ​​the upper surface of the base plate (11), and a hip-waist cushion (15) fixed to the top surface of the base (12), and the rear end surface of the hip-waist cushion (15) is connected to a backrest (16) tilted backward, and the left and right side surfaces of the hip-waist cushion (15) are fixedly connected to support rods (14), and the ends of the support rods (14) are fixedly connected to leg supports (13); The hip support frame mechanism (2) includes a cross base (21) fixed on the front end face of the base plate (11), four servo electric cylinders (22) hinged on the four ends of the cross base (21), and an electric push rod (27) fixed at the central position of the upper surface of the cross base (21), the telescopic shaft of the electric push rod (27) is fixedly connected to a push rod (26), the top of the push rod (26) is fixedly connected to a metal ball (25), the telescopic ends of the servo electric cylinder (22) are fixed to a telescopic shaft (23), the end of the telescopic shaft (23) is hinged to an inverted U-shaped connecting plate (24), and the side of the inverted U-shaped connecting plate (24) away from the telescopic shaft (23) is fixedly connected to a placement plate (28), the top 2 / 3 area of ​​the metal ball (25) is inserted into the lower surface of the placement plate (28), and is in a movable connection state with the bottom surface of the placement plate (28); The perineal tissue pulling and tear-proof mechanism (3) includes a housing (31), two servo motors (32) fixedly connected to the inner cavity of the housing (31), and two rotating wheels (36) located outside the housing (31) and connected to the output shafts of the servo motors (32) through a coupling. The rotating wheels (36) clamp a pulling wire (38) between each other, and the end of the pulling wire (38) is connected to a medical tape (39), and the adhesive surface of the medical tape (39) adheres to the perineal skin of the human body.

2. The device for preventing vaginal tearing during childbirth according to claim 1, characterized in that: The front surface of the base plate (11) is provided with a notch for embedding the cross base (21), the front side of the hip and waist cushion (15) is provided with an opening for exposing the perineum, the front surface of the backrest (16) is in contact with the back of the human body, and the legs of the human body are in a bent and open state, and the top surface of the leg support (13) is in contact with the skin of the calf of the human body.

3. The device for preventing vaginal tearing during childbirth according to claim 1, characterized in that: The cross-section of the cross base (21) is in the shape of a "cross" as a whole, and the four ends of the cross base (21) extending outward are connected to the bottom end of the servo electric cylinder (22) through an axis pin, so as to allow the servo electric cylinder (22) to rotate along the four ends of the cross base (21).

4. The device for preventing vaginal tearing during childbirth according to claim 1, characterized in that: The top end of the telescopic shaft (23) is inserted into the interior of the inverted U-shaped connecting plate (24), and a shaft pin passes through the portion where the telescopic shaft (23) and the inverted U-shaped connecting plate (24) overlap each other; wherein the servo electric cylinders (22) are arranged in a circular array around the central axis of the cross base (21).

5. The device for preventing vaginal tearing during childbirth according to claim 1, characterized in that: A fixing block (212) is fixedly connected to the central area of ​​the bottom surface of the placement plate (28), and a spherical groove (211) for the metal ball (25) to be inserted and rotated is provided on the bottom surface of the fixing block (212).

6. The device for preventing vaginal tearing during childbirth according to claim 1, characterized in that: The top surface of the placement plate (28) contacts the front side of the buttocks of a human body in a lying position, and a canvas belt (29) is connected to both left and right sides of the upper surface of the placement plate (28). Buckles (210) are provided on the sections of the canvas belt (29), and the canvas belt (29) is wrapped and fixed around the base of the human thigh.

7. The device for preventing vaginal tearing during childbirth according to claim 1, characterized in that: The bottom surface of the shell (31) is fixedly connected to the front middle area of ​​the top surface of the placement plate (28), and the outer surface of the shell (31) is covered with an end cover (34) by a snap, and a positioning block (33) is fixedly connected to the front side surface of the end cover (34), and a circular hole for the pulling wire (38) to pass through is opened inside the positioning block (33), and the end of the pulling wire (38) away from the medical tape (39) is fixedly connected to the limiting block (35), and the diameter of the limiting block (35) is larger than the diameter of the circular hole inside the positioning block (33), which is used to prevent the pulling wire (38) from escaping from the clamping of the rotating wheels (36), wherein the perineal tissue pulling and tearing prevention mechanism (3) is set in a left-right mirror symmetrical manner with the central axis of the placement plate (28) as the base point.

8. The device for preventing vaginal tearing during childbirth according to claim 1, characterized in that: The outer rings of the rotating wheels (36) that are close to each other are each provided with a circle of grooves (37) for allowing the drawing wire (38) to pass through the grooves (37) between the rotating wheels (36).

9. The device for preventing vaginal tearing during childbirth according to claim 1, characterized in that: The medical tape (39) on the left side is adhered to the right side of the human perineum, and the medical tape (39) on the right side is adhered to the left side of the human perineum, thereby forming a cross-traction to provide support for the perineum tissue and prevent vaginal tearing caused by sudden force after uterine contraction.

10. The device for preventing vaginal tearing during childbirth according to claim 1, characterized in that: The surfaces of the housing (31) on one side close to each other are fixedly connected to a guide bracket (310), and a through hole for the pulling wire (38) to pass through is provided inside the guide bracket (310), which is used to guide the pulling direction of the pulling wire (38).

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