CN113648002B - A surgical retractor for gynecological surgery - Google Patents

Abstract

The invention provides an operation retractor for gynecological operation, which comprises a supporting seat, wherein a plate body is connected to the supporting seat, and a through hole for a hand to pass through during operation is formed in the plate body; still be equipped with a plurality of pulling mechanisms that are circumference equipartition on the plate body side, every pulling mechanism all includes: the loop bar is connected with the side surface of the plate body through the pitching angle adjusting mechanism; the sliding rod is connected with the loop bar in a sliding manner through a first sliding mechanism; the hook assembly is fixed at one end of the sliding rod which slides out of the loop bar; the control system comprises a pressure sensor and a control system, wherein the pressure sensor is fixed at the position where the hook assembly is contacted with the muscle to be pulled; the microprocessor is connected with the pressure sensor, the pitching angle adjusting mechanism and the driving piece of the sliding mechanism; the invention provides a surgical retractor for gynecological surgery, which utilizes a plurality of pulling mechanisms to pull a surgical part of a patient from all directions, ensures that all positions of a surgical gap are uniformly stressed, and avoids the problem that a patient is locally injured due to nonuniform stress on one side.

Description

A surgical retractor for gynecological surgery

technical field

The invention belongs to the technical field of medical devices, in particular to a surgical retractor for gynecological surgery.

Background technique

Commonly used surgical methods in gynecology include open surgery, minimally invasive laparoscopic surgery, minimally invasive vaginal surgery, hysteroscopic surgery, and combined hysteroscopic surgery. Minimally invasive gynecological surgery relies on the increasing popularity of laparoscopic technology and the continuous improvement of vaginal gynecological surgery technology, and gynecological surgery is developing in the direction of minimally invasive surgery. Vaginal surgery is the use of vaginal surgery, which has the advantages of less trauma, less intestinal disturbance, less postoperative pain, faster recovery, and no surgical traces on the abdomen. However, in the prior art, when performing genital surgery, the genitals are generally pulled by a manual hand-held retractor. Since a nurse who is responsible for the retractor has a long operation time, it will consume a lot of physical strength during the operation. It requires the cooperation of two nurses to use the retractor to open the patient's genitals together, and it is difficult for the two nurses to ensure the same strength, which will cause different forces on the left and right sides of the genitals, and it is easy to cause uneven force on one side. The problem of the patient's local injury.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a surgical retractor for gynecological surgery, which can use multiple pulling mechanisms to pull the patient's genitals from all directions, so as to ensure that the force on each position of the genitals is uniform, and there will be no uneven force on a certain side to cause local injury to the patient. problem occurs.

The technical scheme of the present invention is:

A surgical retractor for gynecological surgery, comprising:

Support base;

a plate body, which is connected to the support base, and is provided with a through hole for the hand to pass through during surgery;

A plurality of pulling mechanisms are evenly distributed on the side surface of the plate body in the circumferential direction, and each pulling mechanism includes: a sleeve rod, which is connected with the side surface of the plate body through a pitch angle adjustment mechanism; the sleeve rod is slidably connected; the hook assembly is fixed on one end of the sliding rod that slides out of the sleeve rod;

The control system includes a pressure sensor, which is fixed at the position where the hook assembly is in contact with the muscle to be stretched; a microprocessor is connected with the pressure sensor, the pitch angle adjustment mechanism and the driving member of the sliding mechanism.

The above hook components include:

a cylinder, which is a hollow shell and is fixed at one end of the sliding rod sliding out of the sleeve rod;

The draw hook is connected with the cylinder through the first rotating shaft; the rotation direction of the draw hook is perpendicular to the extension direction of the sliding rod;

a torsion spring, sleeved on the first rotating shaft;

a first motor, fixed inside the cylindrical shell and connected with the microprocessor;

One end of the rope body is connected with the output shaft of the first motor, and the other end is connected with the draw hook through the through hole opened on the cylinder.

The above includes a U-shaped connecting part, a straight rod part and a bending part; the U-shaped vertical plate on the left side of the U-shaped connecting part is located on the left side of the cylinder, and the right side of the U-shaped connecting part is located on the right side of the cylinder; The first rotating shaft transversely penetrates the U-shaped connecting portion and the cylinder, one end of the first rotating shaft is fixed with a convex block, the other end of the first rotating shaft is provided with an external thread, and the external thread is threadedly connected with the nut; One end of the rod part is fixedly connected with the horizontal plate of the U-shaped connecting part, and the other end of the straight rod part is fixedly connected with the bending part, and the end part of the bending part is provided with a first groove for placing the pressure sensor, A soft part for contacting the part to be pulled during surgery is fixed in a groove.

The above-mentioned pitch angle adjustment mechanism includes:

a base, fixed on the side surface of the plate body;

a support plate, one end of which is hinged with the upper end of the base; the sleeve rod is fixed on the upper surface of the support plate;

the left and right ends of the screw rod are connected with the bearing seat fixed on the upper surface of the base;

a nut, threadedly connected with the screw;

a support rod, the upper end of which is hinged with the lower surface of the support plate, and the lower end of which is hinged with the side surface of the nut;

The second motor is fixed on the base, and its output shaft is connected with one end of the screw; the second motor is connected with the microprocessor.

The above-mentioned first sliding mechanism includes:

The first chute is opened on the left and right sides of the sleeve rod;

a first sliding bar, matched with the first sliding groove and fixed on the left and right sides of the sliding rod;

a rack, fixed on the upper side of the sliding rod;

The gear is meshed with the rack, and the center of the gear is provided with a second shaft passing through it, the second shaft is located in the second groove opened on the sleeve rod, and the left and right sides of the second shaft are fixed by bearings the bearing seat connection in the second groove;

The third motor is fixed in the second groove opened on the sleeve rod, the output shaft of the third motor is connected with one end of the second rotating shaft, and the third motor is connected with the microprocessor.

The above-mentioned plate body includes a first semi-annular plate and a second semi-annular plate, and the two semi-annular plate structures are connected with the relative moving mechanism fixed on the support base.

The above-mentioned relative moving mechanism includes:

a left-hand screw, the left end of which is connected with the bearing seat fixed on the support seat;

a right-hand screw, the left end of which is fixedly connected with the right end of the left-hand screw, and the right end is connected with the bearing seat fixed on the support seat;

a left-handed nut, threadedly connected with the left-handed screw;

a right-handed nut, threadedly connected with the right-handed screw;

a first connecting rod, the upper end of which is connected with the first half-ring plate, and the lower end of which is fixedly connected with the left-handed nut;

a second connecting rod, the upper end of which is connected with the second half-ring plate, and the lower end of which is fixedly connected with the right-handed nut;

The fourth motor is fixed in the support base, and its output shaft is connected with the left end of the left-hand screw; the fourth motor is connected with the microprocessor;

a plate body, located above the left-handed screw rod and the right-handed screw rod, and fixed on the support base; the plate body is provided with a chute matched with the first connecting rod and the second connecting rod .

A distance sensor for monitoring the distance between the left-handed nut and the inner side of the support base is fixed on the above-mentioned left-handed nut.

The outer side of the above-mentioned support base is sleeved with an outer casing, and the inside of the outer casing is fixedly connected with the fixed end of the telescopic piece, the telescopic end of the telescopic piece is longitudinally telescopic upward and connected with the lower end of the support base, and the telescopic piece is connected with the microprocessor. ; The left and right sides of the support base are respectively connected with the outer casing through a second sliding mechanism.

The above-mentioned second sliding mechanism includes:

a second sliding block, fixed on the left side of the support base or fixed on the right side of the support base;

The second chute, when the second sliding block is fixed on the left side of the support seat, the second sliding groove is opened on the left side of the outer casing; when the second sliding block is fixed on the left side of the support seat When on the right side, the second chute is opened on the right side of the outer casing.

Beneficial effects of the present invention:

1. In the prior art, during gynecological surgery, the genitals are generally pulled by manual hand-held retractors. Because a nurse who is in charge of the retractor for a long operation time will consume a lot of physical strength during the operation, and at the same time, the operating position must be reserved for the attending doctor. , it requires the cooperation of two nurses to jointly use the retractor to open the patient's genitals, and the strength of the two nurses is difficult to ensure the same, which will cause different forces on the left and right sides of the genitals. The present application provides a surgical retractor for gynecological surgery, which can use multiple pulling mechanisms to pull the patient's genitals from all directions, so as to ensure that the force on each position of the genitals is uniform, and there will be no problem of uneven force on one side and local injury to the patient. Appear. At the same time, the application is also provided with a pressure sensor, which can be used to monitor the pressure on the human body when the retractor is pulled, and feedback the pressure value to the microprocessor, and the microprocessor controls the pressure of each pulling mechanism to pull the genitals according to the pressure value. same.

2. The present invention provides a surgical retractor for gynecological surgery. The sliding rod can slide in the sleeve rod. When the sliding rod slides, it drives the hook assembly to move to adjust the distance of the retracting hook and make it in the most suitable position. At the same time, the hook assembly of the present invention can adjust the angle of the retracting hook, so that it extends into the patient's genitals at the most suitable angle to ensure the accurate pulling position. When adjusting the angle of the retracting hook, the present invention uses the method of pulling the rope to pull the retracting hook to rotate relative to the sliding rod. In this way, the angle of the retractor can be slowly adjusted to avoid injury to the patient caused by too fast adjustment speed, and at the same time, the use of a complex and large pulling mechanism to occupy the area where the retractor is in contact with the genitals is avoided.

3. The present invention provides a surgical retractor for gynecological surgery. The plate body is composed of two semi-annular plate bodies. Multiple pulling mechanisms are distributed on the side of the plate body on both sides. The two semi-annular plate bodies can move relatively, that is, more A pulling mechanism pulls the patient's genitals from both sides, so that the opening in the middle becomes larger, providing a larger operating space for the main doctor. In the present invention, the two semi-ring plates move relatively synchronously, that is, the pulling force and pulling distance to the left and right sides are also the same, which further ensures that the left and right sides are evenly stressed.

Description of drawings

FIG. 1 is a schematic diagram of the overall structure of the present invention.

FIG. 2 is a schematic structural diagram of a plurality of pulling mechanisms evenly distributed on the plate body according to the present invention.

FIG. 3 is a schematic side view of the structure of the first sliding mechanism of the present invention.

FIG. 4 is a schematic front view of the structure of the first sliding mechanism of the present invention.

FIG. 5 is a schematic structural diagram of the pitch angle adjustment mechanism of the present invention.

FIG. 6 is a schematic side view of the structure of the hook assembly of the present invention.

FIG. 7 is a schematic front view of the structure of the hook assembly of the present invention.

FIG. 8 is a block diagram of the control principle of the present invention.

Description of reference numbers:

1. Support seat; 2. Plate body; 2-1. First half-ring plate; 2-2, Second half-ring plate; 3. Sleeve rod; 4. Slide rod; 5. Pressure sensor; 6. Microprocessor ;7, cylinder; 8, hook; 8-1, U-shaped connecting part; 8-2, straight rod part; 8-3, bending part; 9, first shaft; 10, torsion spring; 11, first Motor; 12, rope body; 13, base; 14, support plate; 15, screw rod; 16, nut; 17, support rod; 18, second motor; 19, first chute; 20, first slide bar; 21 , rack; 22, gear; 23, second shaft; 24, third motor; 25, left-hand screw; 26, right-hand screw; 27, left-hand nut; 28, right-hand nut; 29, first connecting rod; 30 31, the fourth motor; 32, the distance sensor; 33, the outer casing; 34, the telescopic piece; 35, the second slider; 36, the second chute.

Detailed ways

A specific embodiment of the present invention will be described in detail below with reference to FIGS. 1 to 8 , but it should be understood that the protection scope of the present invention is not limited by the specific embodiment.

Example 1:

As shown in FIG. 1 , an embodiment of the present invention provides a surgical retractor for gynecological surgery, which includes a support base 1, and a plate body 2 that is inclined at a certain angle is provided on the support base 1. The through hole through which the hand passes through; the side of the plate body 2 is provided with a plurality of pulling mechanisms that are evenly distributed in the circumferential direction, and each pulling mechanism includes a sleeve rod 3, a sliding rod 4 and a hook assembly, and the sleeve rod 3 passes the pitch angle. The adjustment mechanism is connected with the side of the plate body 2 , the sleeve rod 3 is sleeved with a sliding rod 4 which is slidably connected to it through the first sliding mechanism, and a hook component is fixed at one end of the sliding rod 4 sliding out of the sleeve rod 3 . The surgical retractor for gynecological surgery also includes a control system, the control system includes a pressure sensor 5, the pressure sensor 5 is fixed at the position where the hook component is in contact with the muscle to be stretched, the pressure sensor 5 is connected with the microprocessor 6, and the microprocessor 6 is also connected with The pressure sensor 5 is connected with the pitch angle adjustment mechanism and the driving member of the sliding mechanism.

In the prior art, during gynecological surgery, the genitals are generally pulled by a manual hand-held retractor. Because a nurse who is in charge of the retractor with a long operation time will consume a lot of physical strength during the operation, and at the same time, due to the need to reserve an operating position for the attending doctor, it is necessary to Only two nurses can use the retractor to open the patient's genitals together, and it is difficult to ensure that the strength of the two nurses is the same, which will cause different forces on the left and right sides of the genitals. The present application provides a surgical retractor for gynecological surgery, which can use multiple pulling mechanisms to pull the patient's genitals from all directions, so as to ensure that the force on each position of the genitals is uniform, and there will be no problem of uneven force on one side and local injury to the patient. Appear. At the same time, the application is also provided with a pressure sensor, which can be used to monitor the pressure on the human body when the retractor is pulled, and feedback the pressure value to the microprocessor, and the microprocessor controls the pressure of each pulling mechanism to pull the genitals according to the pressure value. same.

Further, the hook assembly includes a cylinder 7, a pull hook 8, a torsion spring 10, a first motor 11 and a rope body 12; the cylinder 7 is a hollow shell and is fixed at one end of the sliding rod 4 that slides out of the sleeve rod 3; the pulling hook 8 The first rotating shaft 9 is connected to the cylinder 7, and the rotation direction of the hook is perpendicular to the extending direction of the sliding rod 4; the torsion spring 10 is sleeved on the first rotating shaft 9; the first motor 11 is fixed inside the casing of the cylinder 7 And it is connected with the microprocessor 6 ; one end of the rope body 12 is connected with the output shaft of the first motor 11 , and the other end is connected with the hook 8 through the through hole opened on the cylinder 7 .

Further, the hook 8 includes a U-shaped connecting part 8-1, a straight rod part 8-2 and a bending part 8-3; the U-shaped vertical plate on the left side of the U-shaped connecting part 8-1 is located on the left side of the cylinder 7, and the U The right side of the U-shaped connecting part 8-1 is located on the right side of the cylinder 7; the first rotating shaft 9 transversely penetrates the U-shaped connecting part 8-1 and the cylinder 7, one end of the first rotating shaft 9 is fixed with a bump, and the other side of the first rotating shaft 9 is fixed. One end is provided with an external thread, and the external thread is threadedly connected with the nut; In the first groove where the pressure sensor 5 is placed, a soft part for contacting the part to be pulled during surgery is fixed in the first groove.

The invention provides a surgical retractor for gynecological surgery. A sliding rod can slide in a sleeve rod. When the sliding rod slides, it drives a hook component to move to adjust the distance of the retracting hook so that it is located at the most suitable position. At the same time, the hook assembly of the present invention can adjust the angle of the retracting hook, so that it extends into the patient's genitals at the most suitable angle to ensure the accurate pulling position. When adjusting the angle of the retracting hook, the present invention uses the method of pulling the rope to pull the retracting hook to rotate relative to the sliding rod. In this way, the angle of the retractor can be slowly adjusted to avoid injury to the patient caused by too fast adjustment speed, and at the same time, the use of a complex and large pulling mechanism to occupy the area where the retractor is in contact with the genitals is avoided.

At the same time, in the present invention, the hook 8 consists of three parts. The first part of the U-shaped connecting part 8-1 clamps the cylinder 7 inside, and the first rotating shaft 9 transversely penetrates the U-shaped connecting part 8-1 and the cylinder 7. When necessary When cleaning the pull hook 8, it is only necessary to remove the threaded connection nut at the other end of the first rotating shaft 9 and take out the first rotating shaft 9. At this time, the pull hook 8 is separated from the cylinder 7, and the pull hook 8 can be removed separately when cleaning. Easy to clean, easy to operate.

Example 2:

This embodiment is based on Embodiment 1. The pitch angle adjustment mechanism includes a base 13 , the base 13 is fixed on the side surface of the plate body 2 , and the upper end of the base 13 is hinged with one end of the support plate 14 ; the sleeve rod 3 is fixed on the upper surface of the support plate 14 The base 13 is provided with a screw rod 15, the left and right ends of the screw rod 15 are connected with the bearing seat fixed on the upper surface of the base 13 through bearings, and the screw rod 15 is threadedly connected with the nut 16; the lower surface of the support plate 14 is connected with two supports The upper end of the rod 17 is hinged, and the lower ends of the two support rods 17 are connected into one body by a connecting rod, and the connecting rod is fixed on the side wall of the nut 16; one end of the screw rod 15 is connected with the output shaft of the second motor 18, and the second motor 18 is fixed On the base 13 , the second motor 18 is also connected with the microprocessor 6 .

In the present invention, the pitch angle adjustment mechanism uses the second motor 18 to drive the screw 15 to rotate, the screw 15 drives the nut 16 to move forward and backward, the nut 16 moves forward and backward to drive the two support rods 17 to push the support plate 14 to rotate, and the support plate 14 rotates the sleeve rod 3 to complete Adjustment of the pitch angle.

Example 3:

This embodiment is based on Embodiment 1. The first sliding mechanism includes a first sliding groove 19, which is opened on the left and right sides of the sleeve rod 3; a first sliding bar 20 cooperates with the first sliding groove 19 and is fixed on The left and right sides of the sliding rod 4; the rack 21 is fixed on the upper side of the sliding rod 4; the gear 22 is meshed with the rack 21, and the center of the gear 22 is provided with a second rotating shaft 23 passing through it, The second rotating shaft 23 is located in the second groove opened on the sleeve rod 3, and the left and right sides of the second rotating shaft 23 are connected to the bearing seat fixed in the second groove through bearings; one end of the second rotating shaft 23 is connected to the third The output shaft of the motor 24 is connected, the third motor 24 is fixed in the second groove opened on the sleeve rod 3 , and the third motor 24 is connected with the microprocessor 6 .

The first sliding mechanism in the present invention uses the structure in which the rack 21 and the gear 22 cooperate to drive the sliding rod 4 to slide in the sleeve rod 3 . When sliding, the third motor 24 is activated, and the third motor 24 drives the gear 22 through the second rotating shaft 23 Rotation, the rotation of the gear 22 drives the rack 21 fixed on the upper side of the sliding rod 4 to move, the movement of the rack 21 drives the sliding rod 4 to move along the sleeve rod 3, and the sliding rod 4 drives the hook assembly to move to adjust the distance of the hook so that it is located in the most suitable location.

Example 4:

This embodiment is based on Embodiment 1. The plate body 2 includes a first semi-annular plate 2-1 and a second semi-annular plate 2-2. The two semi-annular plate structures are opposite to those fixed on the support base 1. Mobile mechanism connection.

Further, the relative movement mechanism includes a left-hand screw 25, a right-hand screw 26, a left-hand nut 27, a right-hand nut 28, a first connecting rod 29, a second connecting rod 30, a fourth motor 31 and a plate body 2; the The left end of the left-hand screw 25 is connected with the bearing seat fixed on the support base 1; the left end of the right-hand screw 26 is fixedly connected with the right end of the left-hand screw 25, and the right end is connected with the bearing seat fixed on the support base 1; The left-handed nut 27 is screwed with the left-handed screw 25; the right-handed nut 28 is screwed with the right-handed screw 26; the upper end of the first connecting rod 29 is connected with the first half-ring plate 2-1, and the lower end is connected with the The left-handed nut 27 is fixedly connected; the upper end of the second connecting rod 30 is connected with the second half-ring plate 2-2, and the lower end is fixedly connected with the right-handed nut 28; the fourth motor 31 is fixed in the support base 1, Its output shaft is connected with the left end of the left-hand screw 25, and the fourth motor 31 is connected with the microprocessor 6; the plate body 2 is located above the left-hand screw 25 and the right-hand screw 26, and is fixed on the support base 1; The plate body 2 is provided with a chute which is matched with the first connecting rod 29 and the second connecting rod 30 .

Further, a distance sensor 32 for monitoring the distance between the left-hand nut 27 and the inner side of the support base 1 is fixed on the left-hand nut 27 .

The invention provides a surgical retractor for gynecological surgery. The plate body is composed of two semi-annular plate bodies, a plurality of pulling mechanisms are distributed on the sides of the plate body on two sides, and the two semi-annular plate bodies can move relatively, that is, multiple pulling mechanisms The mechanism pulls the patient's genitals from both sides, so that the opening in the middle becomes larger, providing the attending doctor with a larger operating space. In the present invention, the two semi-ring plates move relatively synchronously, that is, the pulling force and pulling distance to the left and right sides are also the same, which further ensures that the left and right sides are evenly stressed.

Example 5:

This embodiment is based on Embodiment 4. An outer casing 33 is sleeved on the outer side of the support base 1 , and the inside of the outer casing 33 is fixedly connected with the fixed end of the telescopic piece 34 , and the telescopic end of the telescopic piece 34 is stretched vertically upward and is connected with the support The lower end of the base 1 is connected, and the telescopic element 34 is connected with the microprocessor 6 ; the left and right sides of the support base 1 are respectively connected with the outer casing 33 through a second sliding mechanism.

Further, the second sliding mechanism includes a second sliding block 35, fixed on the left side of the support base 1 or fixed on the right side of the support base 1; a second sliding groove 36, when the second sliding block 35 When the block 35 is fixed on the left side of the support base 1, the second sliding slot 36 is opened on the left side of the outer casing 33; when the second sliding block 35 is fixed on the right side of the support base 1, the The second chute 36 is opened on the right side of the outer casing 33 .

The arrangement of the present invention can also adjust the height, and the support base 1 can be adjusted to a suitable height according to the different conditions of each person. When the height is adjusted, the telescopic piece 34 is activated, and the telescopic end of the telescopic piece 34 stretches upward to drive the support base 1 and fix it on the support base. The multiple pulling mechanisms on the seat 1 move up and down synchronously. During the lifting and lowering process, the second sliding block 35 and the second sliding groove 36 can also be used to cooperate and guide.

The working principle of the present invention:

The present application provides a surgical retractor for gynecological surgery, which can use multiple pulling mechanisms to pull the patient's genitals from all directions, so as to ensure that the force on each position of the genitals is uniform, and there will be no problem that the patient's local injury will occur due to uneven force on one side. . When in use, first start the third motor 24 of the first sliding mechanism, the third motor 24 drives the gear 22 to rotate through the second shaft 23, and the rotation of the gear 22 drives the rack 21 and the sliding rod 4 to slide relative to the sleeve rod 3 synchronously. The hook assemblies of the multiple pulling mechanisms move inward along the center, so that the hooks of the multiple pulling mechanisms can all be in contact with the position where the patient pulls the vagina during surgery.

In order to ensure that the retractor 8 extends into the vagina, the second motor 18 of the pitch angle adjustment mechanism is activated, the second motor 18 drives the screw 15 to rotate, the rotation of the screw 15 drives the nut 16 to move relative to the screw 15, and the movement of the nut 16 drives the support rod 17 to push the support The plate 14 rotates relative to the base 13 . In order to ensure that the retractor 8 fits inside the vagina, the first motor 11 is activated, and the first motor 11 pulls the retractor 8 to rotate relative to the cylinder 7 through the rope body 12, that is, the retractor 8 rotates to the inside of the vagina to fit therewith.

At this time, the third motor 24 of the first sliding mechanism is activated in the reverse direction, and the first sliding mechanism drives the plurality of pulling mechanisms to move outward along the center. At this time, the third motor 24 is activated in the reverse direction, and the third motor 24 is driven by the second rotating shaft 23 The gear 22 rotates, and the gear 22 rotates to drive the rack 21 and the sliding rod 4 to slide relative to the sleeve rod 3 synchronously. At this time, the hook components of the multiple pulling mechanisms move inward along the center, so that the hooks of the multiple pulling mechanisms synchronously pull the patient's genitals along the edge. Moving in all directions, the pressure sensor 5 is also used to monitor the pressure during pulling, and the value is fed back to the microprocessor 6 when the pressure is different, and the microprocessor 6 controls and adjusts each pulling mechanism individually.

When the operating space in the middle of the attending doctor is insufficient, the relative movement mechanism is activated to drive the two semi-annular plates to move relative to each other, that is, the fourth motor 31 is activated, and the fourth motor 31 drives the left-handed screw 25 and the right-handed screw 26 to rotate synchronously. The left-handed nut 27 and the first connecting rod 29 are driven to move synchronously, and the right-handed screw 26 drives the right-handed nut 28 and the second connecting rod 30 to move, that is, drives the two half-ring plates 21 to move relative to each other, so that the opening in the middle of the patient's vagina becomes larger, Provides a larger operating space for the attending physician.

The present invention can also adjust the height, and can adjust the support base 1 to a suitable height according to the different conditions of each person. When the height is adjusted, the telescopic piece 34 is activated, and the telescopic end of the telescopic piece 34 stretches upward to drive the support base 1 and fix it on the support base. The multiple pulling mechanisms on the 1 are synchronously raised and lowered, and the second sliding block 35 and the second chute 36 can also be used for cooperation and guidance during the lifting and lowering process.

To sum up, the present invention provides a surgical retractor for gynecological surgery, which can use a plurality of pulling mechanisms to pull the patient's genitals from all directions, so as to ensure that the force on each position of the genitals is uniform, and there will be no uneven force on one side and cause the patient to suffer. The problem of local injury arises.

Claims (6)

1. A surgical retractor for gynecological operation is characterized by comprising:

a support base (1);

the plate body (2) is connected with the supporting seat (1), and a through hole for a hand to pass through during an operation is formed in the plate body (2);

a plurality of pulling mechanisms, be the circumference equipartition and be in on plate body (2) side to every pulling mechanism all includes: the loop bar (3) is connected with the side surface of the plate body (2) through a pitching angle adjusting mechanism; the sliding rod (4) is connected with the loop bar (3) in a sliding way through a first sliding mechanism; the hook component is fixed at one end of the sliding rod (4) which slides out of the loop bar (3);

the control system comprises a pressure sensor (5) fixed at the position where the hook component is contacted with the muscle to be pulled; the microprocessor (6) is connected with the pressure sensor (5) and driving pieces of the pitching angle adjusting mechanism and the sliding mechanism;

the hook assembly includes: the cylinder (7) is a hollow shell and is fixed at one end of the sliding rod (4) which slides out of the loop bar (3); the draw hook (8) is connected with the cylinder (7) through a first rotating shaft (9); the rotating direction of the draw hook (8) is vertical to the extending direction of the sliding rod (4); the torsion spring (10) is sleeved on the first rotating shaft (9); a first motor (11) fixed inside the housing of the cylinder (7) and connected to the microprocessor (6); one end of the rope body (12) is connected with an output shaft of the first motor (11), and the other end of the rope body penetrates through a through hole formed in the cylinder (7) to be connected with the draw hook (8);

the draw hook (8) comprises: a U-shaped connecting part (8-1), a straight rod part (8-2) and a bending part (8-3); the U-shaped vertical plate on the left side of the U-shaped connecting part (8-1) is positioned on the left side of the cylinder (7), and the right side of the U-shaped connecting part (8-1) is positioned on the right side of the cylinder (7); the first rotating shaft (9) transversely penetrates through the U-shaped connecting part (8-1) and the cylinder (7), a convex block is fixed at one end of the first rotating shaft (9), an external thread is arranged at the other end of the first rotating shaft (9), and the external thread is in threaded connection with a nut; one end of the straight rod part is fixedly connected with the transverse plate of the U-shaped connecting part (8-1), the other end of the straight rod part is fixedly connected with the bending part, a first groove for placing the pressure sensor (5) is formed in the end part of the bending part, and a soft part used for being in contact with a part to be pulled in an operation is fixed in the first groove;

the pitch angle adjustment mechanism includes: the base (13) is fixed on the side surface of the plate body (2); a support plate (14) with one end hinged with the upper end of the base (13); the loop bar (3) is fixed on the upper surface of the support plate (14); the left end and the right end of the screw rod (15) are connected with a bearing seat fixed on the upper surface of the base (13); a nut (16) in threaded connection with the screw (15); the upper end of the supporting rod (17) is hinged with the lower surface of the supporting plate (14), and the lower end of the supporting rod is hinged with the side surface of the nut (16); the second motor (18) is fixed on the base (13), and the output shaft of the second motor is connected with one end of the screw rod (15); the second motor (18) is connected with the microprocessor (6);

the first slide mechanism includes: the first sliding chutes (19) are formed in the left side and the right side of the loop bar (3); the first sliding strips (20) are matched with the first sliding grooves (19) and fixed on the left side and the right side of the sliding rod (4); a rack (21) fixed to the upper side of the slide bar (4); the gear (22) is meshed with the rack (21), a second rotating shaft (23) penetrating through the gear (22) is arranged in the center of the gear (22), the second rotating shaft (23) is located in a second groove formed in the loop bar (3), and the left side and the right side of the second rotating shaft (23) are connected with bearing seats fixed in the second groove through bearings; and the third motor (24) is fixed in a second groove formed in the loop bar (3), an output shaft of the third motor (24) is connected with one end of the second rotating shaft (23), and the third motor (24) is connected with the microprocessor (6).

2. A surgical retractor for gynaecological operations according to claim 1, characterised in that said plate (2) comprises a first semi-annular plate (2-1) and a second semi-annular plate (2-2), both semi-annular plate structures being connected to relative movement means fixed to said support base (1).

3. The surgical retractor for gynecological operations according to claim 2, wherein said relative movement mechanism comprises:

the left-handed screw (25) is connected with a bearing seat fixed on the supporting seat (1) at the left end;

the left end of the right-handed screw (26) is fixedly connected with the right end of the left-handed screw (25), and the right end of the right-handed screw is connected with a bearing seat fixed on the supporting seat (1);

a left-handed nut (27) which is screwed to the left-handed screw (25);

the right-handed nut (28) is in threaded connection with the right-handed screw (26);

the upper end of the first connecting rod (29) is connected with the first semicircular plate (2-1), and the lower end of the first connecting rod is fixedly connected with the left-handed nut (27);

the upper end of the second connecting rod (30) is connected with the second semi-annular plate (2-2), and the lower end of the second connecting rod is fixedly connected with the right-handed nut (28);

the fourth motor (31) is fixed in the supporting seat (1), and the output shaft of the fourth motor is connected with the left end of the left-handed screw (25); the fourth motor (31) is connected with the microprocessor (6);

the plate body (2) is positioned above the left-handed screw (25) and the right-handed screw (26) and is fixed on the supporting seat (1); the plate body (2) is provided with a sliding groove matched with the first connecting rod (29) and the second connecting rod (30).

4. A surgical retractor for gynaecological operations according to claim 3, characterised in that a distance sensor (32) is fixed to the left-hand nut (27) for monitoring its distance from the inside of the support base (1).

5. The surgical retractor for gynecological operation as claimed in claim 4, wherein an outer housing (33) is sleeved on the outer side of the supporting base (1), the inside of the outer housing (33) is fixedly connected with the fixed end of an expansion member (34), the expansion end of the expansion member (34) longitudinally extends upwards and is connected with the lower end of the supporting base (1), and the expansion member (34) is connected with the microprocessor (6); the left side and the right side of the supporting seat (1) are respectively connected with the outer shell (33) through a second sliding mechanism.

6. The surgical retractor for gynecological operations as claimed in claim 5, wherein the second sliding mechanism comprises:

the second sliding block (35) is fixed on the left side of the supporting seat (1) or fixed on the right side of the supporting seat (1);

the second sliding chute (36) is formed in the left side of the outer shell (33) when the second sliding block (35) is fixed to the left side of the supporting seat (1); when the second sliding block (35) is fixed on the right side of the supporting seat (1), the second sliding groove (36) is formed in the right side of the outer shell (33).

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