Delivery forceps with readable and controllable pressure and tension

Abstract

The invention relates to the technical field of medical instruments, and provides pressure and tension readable and controllable delivery forceps which comprise a left forceps body, a right forceps body, a right handle and a left handle, the left forceps body and the right forceps body are detachably hinged to the position close to the middle, and the right handle and the left handle are arranged at the tail ends of forceps rods of the left forceps body and the right forceps body respectively. Comprising a right handle and a left handle, a right sliding groove and a left sliding groove are formed in the positions, close to the bottoms, of the right handle and the left handle respectively in the length direction, and the tail end of the left clamp and the tail end of the right clamp are slidably connected into the right sliding groove and the left sliding groove respectively. The clamping force and the pulling force of the obstetric forceps are controlled in real time, so that the life safety of a puerpera and a newborn is effectively protected, meanwhile, the experience requirement for obstetric medical staff is greatly reduced, an obstetric operation can be more accurate under parameterized clamping, and the pain of the puerpera and the newborn is greatly reduced.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to an obstetric forceps with readable and controllable pressure and tension. Background Art

[0002] As is well known, obstetric forceps are used to assist in the birth of a baby. In practice, the amount of pulling force applied to the baby using such forceps depends on several factors. Some of these factors relate to the mother and baby, while others relate to the user of the forceps. For example, the user's experience, fatigue, body size, and strength can all affect how much force is applied to the baby when attempting to deliver a baby using obstetric forceps. If too much force is applied, the baby or mother, or both, can be harmed in a variety of ways. Alternatively, if the user does not apply enough force, the obstetric forceps may be abandoned prematurely in favor of other delivery techniques that may be more invasive or harmful.

[0003] With the development of technology, the technology of forceps has become more and more advanced. There are also many high-tech products that combine electronic equipment and various sensors to monitor the clamping force and pulling force. However, these products are not only expensive, but also have complex debugging functions and are very prone to failure. There are many uncontrollable risks when using them in a delivery surgical environment. Therefore, it has become a difficult problem that technical personnel in this field need to overcome to achieve adjustable and controllable clamping force and pulling force of forceps through purely mechanical structures. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art that the clamping force and the pulling force are unadjustable and uncontrollable, the instability of electronic equipment in this practical scenario increases the risk of surgery and the price is high, and to propose a pair of obstetric forceps with readable and controllable pressure and pulling force.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a pressure-pulling-force readable and controllable obstetric forceps, comprising a left forceps, a right forceps, a right handle and a left handle, the left forceps and the right forceps being detachably hinged and near the middle, the right handle and the left handle being respectively arranged at the tail ends of the forceps rods of the left forceps and the right forceps, including a right slide groove and a left slide groove respectively opened at the bottom of the right handle and the left handle in the strict length direction, the tail ends of the left forceps and the right forceps are respectively slidably connected to the inside of the right slide groove and the left slide groove, a dragging mechanism is arranged between the right handle and the left forceps, and between the left handle and the right forceps, the dragging mechanism drives the right forceps and the left forceps to slide along the tracks of the right slide groove and the left slide groove respectively, a positioning mechanism is arranged between the tails of the right handle and the left handle, and the opening and closing angles of the right handle and the left handle are controlled by the positioning mechanism; A clamping force display structure is provided on the upper part of the left handle along the length direction, and the clamping force display structure includes a connecting rod and a display part, one end of the connecting rod is hinged to the right handle, and the display part is provided on the top surface of the left handle near the front end, and the display part changes the actual clamping force value by the left handle and the right handle moving closer or farther away from each other, and a tension limiting mechanism is provided at the tail of the left handle; A tension display mechanism is arranged near the tail of the right handle, and a reading portion of the tension display mechanism is arranged on the top surface of the right handle near the tail. The reading portion changes the tension value as the tail of the left pliers slides into or out of the right slide slot.

[0006] Furthermore, the dragging mechanism includes a telescopic handle, both ends of the bottom of the telescopic handle are rotatably connected to the top of the lifting rod, the other ends of the two lifting rods are respectively hinged to the front end of one side of the left handle and the right handle, the lifting rod is hinged to one end of the dragging rod near the middle, and the other ends of the two dragging rods are respectively hinged to the clamp rods of the right clamp and the left clamp.

[0007] Furthermore, the telescopic handle includes a left handle and a right handle, and the two lifting rods are rotatably connected to the bottom of the left handle and the right handle respectively. One end of the left handle is fixedly connected to a sliding rod, and the right handle is cylindrical and sleeved on the outside of the sliding rod. A baffle is provided at the end of the sliding rod to prevent the right handle from slipping.

[0008] Furthermore, the clamping force display structure also includes a rotating shaft, both ends of the rotating shaft are rotatably connected with shaft plates, the upper part of one side of the left handle is provided with a mounting groove along the length direction, and the two shaft plates are respectively fixedly installed at the two ends of the mounting groove, and a spiral ridge is provided on the surface of the rotating shaft along the length direction, the outer sleeve of the rotating shaft is provided with an inner spiral cylinder, and the spiral ridge cooperates with the spiral groove of the inner spiral cylinder, and a guide block is provided on one side of the inner spiral cylinder, and the guide block is slidably connected to the top of the guide rail, and the guide rail is fixedly installed at the bottom of the inner wall of the mounting groove, and the other end of the connecting rod is hinged on the top of the guide block, and the outer sleeve of the rotating shaft is provided with a pressure spring, and the pressure spring is in contact with the inner spiral cylinder and the shaft plate on one side, and a display groove is provided at the top front end of the left handle, and a display wheel is rotatably connected to the inside of the display groove, and a follower gear is fixedly connected to one side of the display wheel, and the follower gear is meshed with one side of the driving gear, and the driving gear is fixedly installed on the rotating shaft near the front end.

[0009] Furthermore, a placement groove is opened on one side of the right handle along the length direction, the connecting rod is located in the placement groove, and the front end of the connecting rod is hinged to the placement groove.

[0010] Furthermore, pressure values ​​are engraved on the surface of the display wheel, and the pressure values ​​are divided into three color block areas: light, medium, and heavy.

[0011] Furthermore, the tension display mechanism includes a connecting frame, which is a sideways "Z"-shaped structure, one end of which is fixedly installed on the tail of the clamp rod of the left clamp, and the other end of which is fixedly connected to one end of the tension spring. A giveway groove is provided at the top of the right slide groove and near the tail end, and the other end of the tension spring is fixedly connected to the inner wall of the giveway groove. A scale groove is provided on the mirror surface of the right handle and near the tail along the length direction, and a translation groove is provided at the bottom center of the scale groove. A connecting piece is movably connected in the translation groove, and the bottom of the connecting piece is fixedly connected to the tail end of the connecting frame, and an indicator needle is fixedly connected to the top of the connecting piece. The indicator needle is in the scale groove, and the bottom of the scale groove is engraved with tension values ​​along the length direction.

[0012] Furthermore, the positioning mechanism includes an adjusting cylinder, a threaded cylinder and an adjusting screw, the adjusting cylinder and the threaded cylinder are respectively rotatably connected to the tail ends of the top of the right handle and the left handle, the adjusting screw is rotatably connected to the adjusting cylinder near the turning handle, and the adjusting screw is threadedly connected to the threaded cylinder.

[0013] Furthermore, the tension limiting mechanism is a threaded screw with a rotating wheel, and the threaded screw is threadedly connected to the left handle and extends into the left sliding groove.

[0014] Furthermore, anti-slip grooves are provided around the rotating handle and the rotating wheel.

[0015] Compared with the prior art, the advantages and positive effects of the present invention are: The present invention arranges a clamping force display structure and a pulling force display mechanism in the handle, so that the clamping force and pulling force of the forceps can be controlled in real time during the use of the forceps, thereby effectively protecting the lives of the mother and the newborn. At the same time, it also greatly reduces the experience requirements for midwifery medical staff, so that the obstetric operation can be more precise with the help of parameterization, greatly reducing the pain of the mother and the newborn, improving the use performance of the forceps, and effectively protecting the mother and the newborn. The mechanized labor-saving structure can also reduce the labor intensity of medical staff, so that the obstetric operation can be carried out more smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention in a closed state; Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention in an open state; Figure 3 It is a schematic diagram of the cross-sectional plan structure of the left handle; Figure 4It is a schematic diagram of the cross-sectional plan structure of the right handle; Figure 5 It is a three-dimensional structural schematic diagram of the positioning mechanism structure.

[0017] Legend: 1. Left clamp; 2. Right clamp; 3. Right handle; 31. Placement slot; 32. Scale slot; 33. Translation slot; 34. Give way slot; 35. Right slide slot; 4. Left handle; 41. Left slide slot; 42. Installation slot; 43. Display slot; 5. Clamping force display structure; 51. Shaft plate; 52. Pressure spring; 53. Spiral edge; 54. Rotating shaft; 55. Inner spiral barrel; 56. Connecting rod; 57. Guide rail; 58. Driving gear ; 59. Follower gear; 510. Display wheel; 511. Guide block; 6. Drag mechanism; 61. Left handle; 62. Slide rod; 63. Baffle; 64. Right handle; 65. Drag rod; 66. Lifting rod; 7. Tension display mechanism; 71. Indicator needle; 72. Connecting piece; 73. Tension spring; 74. Connecting frame; 8. Positioning mechanism; 81. Adjusting screw; 82. Adjusting cylinder; 83. Threaded cylinder; 9. Tension limiting mechanism. DETAILED DESCRIPTION

[0018] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0019] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0020] Example In order to solve the shortcomings of the prior art that the clamping force and the pulling force are not adjustable and controllable, the instability of the electronic equipment in this practical scenario increases the risk of surgery and is expensive; like Figure 1-5As shown, in order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a pressure-pulling readable and controllable obstetric forceps, comprising a left forceps 1, a right forceps 2, a right handle 3 and a left handle 4, the left forceps 1 and the right forceps 2 are detachably hinged near the middle, the right handle 3 and the left handle 4 are respectively arranged at the tail ends of the forceps rods of the left forceps 1 and the right forceps 2, including the right handle 3 and the left handle 4 near the bottom are respectively provided with a right slide groove 35 and a left slide groove 41 in the strict length direction, the tail ends of the left forceps 1 and the right forceps 2 are respectively slidably connected to the inside of the right slide groove 35 and the left slide groove 41, a dragging mechanism 6 is arranged between the right handle 3 and the left forceps 1, and between the left handle 4 and the right forceps 2, the dragging mechanism 6 drives the right forceps 2 and the left forceps 1 to slide along the tracks of the right slide groove 35 and the left slide groove 41 respectively, a positioning mechanism 8 is arranged between the tails of the right handle 3 and the left handle 4, and the opening and closing angles of the right handle 3 and the left handle 4 are controlled by the positioning mechanism 8; A clamping force display structure 5 is provided on the upper part of the left handle 4 along the length direction. The clamping force display structure 5 includes a connecting rod 56 and a display part. One end of the connecting rod 56 is hinged to the right handle 3. The display part is provided on the top surface of the left handle 4 near the front end. The display part changes the actual clamping force value by the left handle 4 and the right handle 3 moving closer or farther away from each other. A tension limiting mechanism 9 is provided at the tail of the left handle 4. A tension display mechanism 7 is provided near the tail of the right handle 3. The reading part of the tension display mechanism 7 is provided on the top surface of the right handle 3 near the tail. The reading part changes the tension value as the tail of the left pliers 1 slides into or out of the right slide slot 35.

[0021] The dragging mechanism 6 includes a telescopic handle, both ends of the bottom of the telescopic handle are rotatably connected to the top of the lifting rod 66, the other ends of the two lifting rods 66 are respectively hinged to the front end of one side of the left handle 4 and the right handle 3, the lifting rod 66 is hinged to one end of the dragging rod 65 near the middle, and the other ends of the two dragging rods 65 are respectively hinged to the clamp rods of the right clamp 2 and the left clamp 1.

[0022] Specifically, Figure 1 As described above, the medical staff who assists in childbirth inserts the left forceps 1 and the right forceps 2 into the birth canal and places them on both sides of the newborn's head, and holds the left handle 4 and the right handle 3 with one hand, and squeezes them together. During this period, the clamping force display structure 5 is driven to operate by the connecting rod 56. At this time, the value of the display wheel 510 can be read from the display slot 43 at the top of the left handle 4 to read the clamping force applied at this time. After determining where the clamping force is controlled by monitoring the fetal heartbeat, it is fixed by the positioning mechanism 8; At this time, keep a stable posture, pull the telescopic handle of the drag mechanism 6 backward with the other hand, drive the left forceps 1 and the right forceps 2 to retreat, and pull the baby out of the birth canal. The force display mechanism 7 in the right handle 3 is driven by the forceps rod of the left forceps 1 to operate, so that the value of the applied force can be read through the movement of the scale groove 32 and the indicator needle 71 set at the top and rear of the right handle 3, so as to effectively maintain the pulling angle and strength; Through the above-mentioned structural setting, the clamping force and pulling force of the forceps can be controlled in real time during the use of the forceps, thereby effectively protecting the lives of the mother and the newborn. At the same time, it also greatly reduces the experience requirements for midwifery medical staff, making the obstetric operation more precise with the help of parameterization, greatly reducing the pain of the mother and the newborn, improving the use performance of the forceps, and effectively protecting the mother and the newborn. The mechanized labor-saving structure can also reduce the labor intensity of medical staff, so that the obstetric operation can be carried out more smoothly.

[0023] The telescopic handle includes a left handle 61 and a right handle 64. Two lifting rods 66 are rotatably connected to the bottom of the left handle 61 and the right handle 64 respectively. One end of the left handle 61 is fixedly connected to the sliding rod 62. The right handle 64 is cylindrical and is sleeved on the outside of the sliding rod 62. A baffle 63 is provided at the end of the sliding rod 62 to prevent the right handle 64 from slipping. When adjusting the clamping force, the left handle 4 and the right handle 3 are set at an angle. Therefore, during the movement of the dragging mechanism 6, the telescopic handle needs to adapt to the change of the front and rear distance and extend and retract, so as to prevent the entire dragging mechanism 6 from getting stuck.

[0024] The clamping force display structure 5 also includes a rotating shaft 54, both ends of which are rotatably connected to the shaft plates 51, the upper part of one side of the left handle 4 is provided with a mounting groove 42 along the length direction, and the two shaft plates 51 are respectively fixedly installed at the two ends of the mounting groove 42, and a spiral ridge 53 is provided on the surface of the rotating shaft 54 ​​along the length direction, and an inner spiral barrel 55 is sleeved on the outer side of the rotating shaft 54, and the spiral ridge 53 cooperates with the spiral groove of the inner spiral barrel 55, and a guide block 511 is provided on one side of the inner spiral barrel 55, and the guide block 511 is slidably connected to the top of the guide rail 57, and the guide rail 57 is fixedly installed at the bottom of the inner wall of the installation groove 42, the other end of the connecting rod 56 is hinged to the top of the guide block 511, the outer sleeve of the rotating shaft 54 ​​is provided with a pressure spring 52, the pressure spring 52 is in contact between the inner spiral tube 55 and the shaft plate 51 on one side, and a display groove 43 is provided at the top front end of the left handle 4. The display groove 43 is internally rotatably connected to a display wheel 510, and one side of the display wheel 510 is fixedly connected to a follower gear 59, which is meshed with one side of a driving gear 58, and the driving gear 58 is fixedly installed on the rotating shaft 54 ​​near the front end.

[0025] Specifically, Figure 2-3As shown, by adjusting the opening and closing angles of the left handle 4 and the right handle 3, the connecting rod 56 is driven to push the inner spiral cylinder 55 to move, and the sliding cooperation between the guide block 511 and the guide rail 57 makes the inner spiral cylinder 55 driven along a straight line with the connecting rod 56, so that the inner spiral cylinder 55 moves forward and backward and drives the rotating shaft 54 ​​to rotate with the inner spiral cylinder 55 driving its spiral edge 53, thereby driving the driving gear 58 on the rotating shaft 54 ​​to rotate forward and reverse, thereby driving the follower gear 59 and the display wheel 510 meshing with it to rotate synchronously, and marking the force by engraving a pressure scale on the display wheel 510, so that the user can read the value intuitively and grasp the pressure degree. At the same time, by arranging a pressure spring 52 on the outside of the rotating shaft 54, the reaction force of the pressure spring 52 is used as a reference for the standard value of the pressure, and at the same time, the opening and closing adjustment of the handle angle can also be made smoother, thereby improving the practical performance of the present obstetric forceps.

[0026] A placement groove 31 is opened on one side of the right handle 3 along the length direction, and the connecting rod 56 is in the placement groove 31, and its front end is hinged to the placement groove 31. By setting the placement groove 31, when the left handle 4 and the left handle are in contact, the connecting rod 56 can be completely received in the placement groove 31, so that the handle can be fully fitted, thereby increasing the structural rationality of the obstetric forceps.

[0027] The surface of the display wheel 510 is engraved with pressure values, and the pressure values ​​are divided into three color block areas: light, medium, and heavy. By setting the color block area divisions, medical staff can grasp the approximate degree of clamping force at the moment through quick observation, so as to grasp the delivery structure and improve the efficiency of midwifery.

[0028] The tension display mechanism 7 includes a connecting frame 74, which is a sideways "Z"-shaped structure, one end of which is fixedly installed on the tail of the clamp rod of the left clamp 1, and the other end is fixedly connected to one end of the tension spring 73. A clearance groove 34 is provided at the top of the right slide groove 35 and near the tail end, and the other end of the tension spring 73 is fixedly connected to the inner wall of the clearance groove 34. A scale groove 32 is provided along the length direction on the mirror surface of the right handle 3 and near the tail. A translation groove 33 is provided at the bottom center of the scale groove 32. A connecting piece 72 is movably connected in the translation groove 33. The bottom of the connecting piece 72 is fixedly connected to the tail end of the connecting frame 74, and an indicator needle 71 is fixedly connected to the top. The indicator needle 71 is in the scale groove 32, and the bottom of the scale groove 32 is engraved with a tension value along the length direction.

[0029] Specifically, Figure 2-4As shown, the user holds the handle with one hand and pulls the drag mechanism 6 with the other hand to make the left and right clamps 2 retract into the handle. At this time, the clamp rod of the left clamp 1 extends into the left slide groove 41 and drives the connecting frame 74 to move, thereby extending the tension spring 73. At the same time, the finger on its top slides in the scale groove 32 to indicate the current tension value, wherein the standard value of the tension is calibrated by the extension and contraction of the tension spring 73, so that the obstetric forceps have a more accurate tension reading value, which makes it convenient for midwives to adjust the structure in coordination with the parturient's uterine contractions, thereby effectively improving the efficiency of midwifery and further improving the performance of the obstetric forceps.

[0030] The positioning mechanism 8 includes an adjusting cylinder 82, a threaded cylinder 83 and an adjusting screw 81. The adjusting cylinder 82 and the threaded cylinder 83 are rotatably connected to the tail ends of the top of the right handle 3 and the left handle 4 respectively. The adjusting screw 81 is rotatably connected to the adjusting cylinder 82 near the rotating handle. The adjusting screw 81 is threadedly connected to the threaded cylinder 83. After the clamping force is adjusted, the posture of the obstetric forceps is fixed by the positioning mechanism 8. By rotating the adjusting screw 81 forward and backward, the threaded cylinder 83 moves on the adjusting screw 81, so that the opening and closing angles of the two handles can be flexibly adjusted, and can be fixed and adjusted at any time, and automatically reset under the reaction force of the pressure spring 52. The operation is very convenient, and the adjustment speed is sensitive.

[0031] The tension limiting mechanism 9 is a threaded screw with a rotating wheel, which is threadedly connected to the left handle 4 and extends into the left slide groove 41. In order to prevent accidents caused by excessive tension or momentary negligence, the present obstetric forceps is provided with a threaded screw with a rotating wheel threadedly connected to the tail of the left handle 4. By adjusting the length of the screw extending into the left slide groove 41, the extension amount of the clamp rod of the right clamp 2 is controlled, thereby limiting the maximum tension of the present obstetric forceps. By presetting the maximum tension value, that is, the extension length of the screw, it is ensured that the mother and the newborn will not be injured due to excessive obstetric tension during a tense delivery operation, making the practical use of the present obstetric forceps safer and more reliable.

[0032] The handle and the wheel are surrounded by anti-slip grooves.

[0033] The above are only preferred embodiments of the present invention and are not intended to limit the present invention in other forms. Any technician familiar with the profession may use the technical contents disclosed above to change or modify them into equivalent embodiments with equivalent changes and apply them to other fields. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A pressure-tension-readable and controllable obstetric forceps, comprising a left forceps (1), a right forceps (2), a right handle (3) and a left handle (4), wherein the left forceps (1) and the right forceps (2) are detachably hinged near the middle, and the right handle (3) and the left handle (4) are respectively arranged at the tail ends of the forceps rods of the left forceps (1) and the right forceps (2), characterized in that: The right handle (3) and the left handle (4) are respectively provided with a right slide groove (35) and a left slide groove (41) near the bottom in the length direction, the tail ends of the left pliers (1) and the right pliers (2) are respectively slidably connected to the inside of the right slide groove (35) and the left slide groove (41), a dragging mechanism (6) is provided between the right handle (3) and the left pliers (1), and between the left handle (4) and the right pliers (2), the dragging mechanism (6) drives the right pliers (2) and the left pliers (1) to slide along the tracks of the right slide groove (35) and the left slide groove (41), respectively, a positioning mechanism (8) is provided between the tail ends of the right handle (3) and the left handle (4), and the opening and closing angles of the right handle (3) and the left handle (4) are controlled by the positioning mechanism (8); A clamping force display structure (5) is provided on the upper part of the left handle (4) along the length direction. The clamping force display structure (5) comprises a connecting rod (56) and a display unit. One end of the connecting rod (56) is hinged to the right handle (3). The display unit is provided on the top surface of the left handle (4) near the front end. The display unit changes the actual clamping force value by the left handle (4) and the right handle (3) moving closer to or farther from each other. A tension limiting mechanism (9) is provided at the tail of the left handle (4). A tension display mechanism (7) is provided near the tail of the right handle (3), and a reading portion of the tension display mechanism (7) is provided on the top surface of the right handle (3) near the tail. The reading portion changes the tension value as the tail of the left pliers (1) slides into or out of the right slide groove (35).

2. The obstetric forceps with readable and controllable pressure and tension according to claim 1, characterized in that: The dragging mechanism (6) comprises a telescopic handle, both ends of the bottom of the telescopic handle are rotatably connected to the top of the lifting rod (66), the other ends of the two lifting rods (66) are respectively hinged to the front end of one side of the left handle (4) and the right handle (3), the lifting rod (66) is hinged to one end of the dragging rod (65) near the middle, and the other ends of the two dragging rods (65) are respectively hinged to the clamp rods of the right clamp (2) and the left clamp (1).

3. The obstetric forceps with readable and controllable pressure and tension according to claim 2, characterized in that: The telescopic handle comprises a left handle (61) and a right handle (64), the two lifting rods (66) are rotatably connected to the bottom of the left handle (61) and the right handle (64), respectively, one end of the left handle (61) is fixedly connected to a sliding rod (62), the right handle (64) is cylindrical and sleeved on the outside of the sliding rod (62), and a baffle (63) is provided at the end of the sliding rod (62) to prevent the right handle (64) from slipping off.

4. The obstetric forceps with readable and controllable pressure and tension according to claim 1, characterized in that: The clamping force display structure (5) further comprises a rotating shaft (54), both ends of which are rotatably connected to shaft plates (51), an upper portion of one side of the left handle (4) is provided with a mounting groove (42) along the length direction, and two shaft plates (51) are respectively fixedly mounted at the two ends of the mounting groove (42), a spiral ridge (53) is provided on the surface of the rotating shaft (54) along the length direction, an inner spiral cylinder (55) is sleeved on the outside of the rotating shaft (54), the spiral ridge (53) cooperates with the spiral groove of the inner spiral cylinder (55), a guide block (511) is provided on one side of the inner spiral cylinder (55), and the guide block (511) is slidably connected to the top of the guide rail (57), and the guide rail (57) is provided with a plurality of guide blocks (511) on the inner spiral cylinder (55). 7) is fixedly mounted on the bottom of the inner wall of the mounting groove (42), the other end of the connecting rod (56) is hinged to the top of the guide block (511), the outer sleeve of the rotating shaft (54) is provided with a pressure spring (52), the pressure spring (52) is in contact between the inner spiral cylinder (55) and the shaft plate (51) on one side, the top front end of the left handle (4) is provided with a display groove (43), the interior of the display groove (43) is rotatably connected to a display wheel (510), one side of the display wheel (510) is fixedly connected to a follower gear (59), the follower gear (59) is meshed with one side of a driving gear (58), and the driving gear (58) is fixedly mounted on the rotating shaft (54) near the front end.

5. The obstetric forceps with readable and controllable pressure and tension according to claim 4, characterized in that: A placement groove (31) is provided on one side of the right handle (3) along the length direction, and the connecting rod (56) is located in the placement groove (31), with its front end hinged to the placement groove (31).

6. The obstetric forceps with readable and controllable pressure and tension according to claim 5, characterized in that: The surface of the display wheel (510) is engraved with pressure values, and the pressure values ​​are divided into three color block areas: light, medium and heavy.

7. The obstetric forceps with readable and controllable pressure and tension according to claim 1, characterized in that: The tension display mechanism (7) comprises a connecting frame (74), the connecting frame (74) is in a sideways "Z"-shaped structure, one end of which is fixedly mounted on the tail of the clamp rod of the left clamp (1), and the other end of which is fixedly connected to one end of a tension spring (73), a clearance groove (34) is provided at the top of the right slide groove (35) and near the tail end, the other end of the tension spring (73) is fixedly connected to the inner wall of the clearance groove (34), and the mirror surface of the right handle (3) and near the A scale groove (32) is provided at the tail portion along the length direction, a translation groove (33) is provided at the center of the bottom of the scale groove (32), a connecting piece (72) is movably connected in the translation groove (33), the bottom of the connecting piece (72) is fixedly connected to the tail end of the connecting frame (74), and the top of the connecting piece (72) is fixedly connected to an indicator needle (71), the indicator needle (71) is in the scale groove (32), and the bottom of the scale groove (32) is engraved with a tension value along the length direction.

8. The obstetric forceps with readable and controllable pressure and tension according to claim 1, characterized in that: The positioning mechanism (8) comprises an adjusting cylinder (82), a threaded cylinder (83) and an adjusting screw (81); the adjusting cylinder (82) and the threaded cylinder (83) are rotatably connected to the tail ends of the tops of the right handle (3) and the left handle (4), respectively; the adjusting screw (81) is rotatably connected to the adjusting cylinder (82) near the rotating handle; and the adjusting screw (81) is threadably connected to the threaded cylinder (83).

9. The obstetric forceps with readable and controllable pressure and tension according to claim 8, characterized in that: The tension limiting mechanism (9) is a threaded screw with a rotating wheel, the threaded screw being threadably connected to the left handle (4) and extending into the interior of the left sliding groove (41).

10. The obstetric forceps with readable and controllable pressure and tension according to claim 9, characterized in that: The rotating handle and the rotating wheel are all provided with anti-skid patterns around their peripheries.

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