CN211534621U - Surgical instrument for blocking uterine blood vessels in cesarean section - Google Patents

Abstract

A surgical instrument for blocking uterine blood vessels in cesarean section is provided, comprising two forearms and a joint, wherein the two forearms are fixed at the front end of the joint, and the surgical instrument further comprises two chucks; the two chucks are respectively fixed at the front ends of the two forearms, and each chuck comprises a chuck body and an anti-skid hole; the anti-slip hole penetrates through at least one chuck body along the direction that the two chucks approach to each other; the joint comprises two parts which are pivoted together, and the forearm and the clamping head are driven to rotate through the relative rotation of the two parts, and the two clamping heads are close to each other or closed to realize the hemostasis operation.

Description

Surgical instrument for blocking uterine blood vessels in cesarean section

Technical Field

The utility model relates to the technical field of medical equipment, and in particular to a surgical instrument for blocking uterine vessels in cesarean section.

Background

The pregnancy delivery mode comprises vaginal delivery and cesarean section. Caesarean section is one of the most widely performed surgical procedures, and usually the operation is selected when vaginal delivery is not possible, there is an indication of a caesarean section operation, or in some special crisis situations, the fetus or mother's life must be saved by the caesarean section. The most common problem with caesarean section is intraoperative bleeding, with an average blood loss of about 1000 ml, twice that of vaginal delivery. In some diseases where there is a risk of major bleeding, such as placental implantation, pre-placenta, placental premature beat, etc., serious bleeding during surgery can lead to hysterectomy and even death of the pregnant woman. When the penetrating placenta is implanted in the pre-placenta, rich thick blood vessels are usually generated between the lower uterine segment and the bladder, the uterine muscle layer is deficient or cannot contract normally, and the wound surface of the uterus after the placenta is delivered is rapidly surged to bleed, which directly endangers the life of the pregnant woman. The method is very important for reducing blood loss in the cesarean section in mechanisms and areas lacking blood sources, effectively and rapidly reduces blood loss in the cesarean section operation, optimizes the operation process, and can benefit each pregnant woman in reducing blood loss in the cesarean section operation. Nevertheless, there is currently no special surgical instrument for blocking the uterine vessels during pregnancy in caesarean section.

At present, the bleeding at the edge of the incision can be reduced only by using a pair of skin forceps in the operation, and the bleeding in the uterine cavity is not effective; if the implanted placenta grows on the lower uterine segment and the cervix, the elastic rubber tube is used for completely blocking blood vessels and muscle layers of the lower uterine segment, the lower part of the lower uterine segment cannot be exposed, and the operation of reducing bleeding, such as clearing the placenta tissues of the lower uterine segment and the cervix, strengthening and suturing the muscle layers of the lower uterine segment and the like, cannot be carried out.

Pelvic vessel ligation procedures are highly demanding, cannot be performed by untrained primary hospitals or low-grade physicians, and it takes time to block the vessels, during which patients may have suffered shock due to excessive bleeding; the technique of blocking pelvic blood vessels by using a radioactive intervention balloon is usually only developed by a large medical institution, the cost is high, risks of receiving radioactive rays, complicated thrombosis and blood vessel rupture exist, pelvic blood vessels are embolized or blocked after a large bleeding occurs, and the condition of the patient is aggravated in the operation process.

Therefore, there is a need for a surgical instrument for blocking uterine blood vessels in a caesarean section, which can be used in a caesarean section procedure, which can significantly reduce blood loss.

SUMMERY OF THE UTILITY MODEL

The present invention has been made in view of the above-described state of the art. An object of the utility model is to provide a surgical instrument for blocking uterine blood vessel in caesarean section, can show the reduction blood loss when using in the operation of caesarean section.

Providing a surgical instrument for blocking uterine blood vessels in cesarean section, which comprises two forearms and a joint, wherein the two forearms are fixed at the front end of the joint;

the two chucks are respectively fixed at the front ends of the two forearms, and each chuck comprises a chuck body and an anti-skid hole; the anti-slip hole penetrates through at least one chuck body along the direction that the two chucks approach to each other; the joint comprises two parts which are pivoted together, and the forearm and the clamping head are driven to rotate through the relative rotation of the two parts, and the two clamping heads are close to each other or closed to realize the hemostasis operation.

Preferably, the side walls of the non-slip hole intersect in a line at one end thereof, the side wall at the other end thereof is a circular arc curved surface, and the size of the middle portion of the non-slip hole continuously changes.

Preferably, the surgical instrument further comprises a bend; the bending part is located the chuck with the junction of forearm, the bending part makes the chuck towards the direction that the axis of joint indicates is crooked, the bending part is crooked into circular-arc.

Preferably, the extending direction of the chuck and the extension line of the forearm form an angle of 70 to 80 degrees.

Preferably, the surgical instrument further comprises a contact portion; the contact portion is disposed at a junction of the collet and the forearm and on opposite sides of the two collets, the contact portion being smooth.

Preferably, the opposite side surfaces of the two chuck bodies are both concave curved surfaces, and when the two chuck bodies are closed, the concave curved surfaces form an accommodating space between the two chuck bodies.

Preferably, the collet further comprises an anti-slip portion; the anti-slipping part is arranged at the front end part of the chuck body and is positioned on the opposite side surfaces of the two chucks.

Preferably, the two parts of the joint are a first rotating member and a second rotating member; the first rotating part is provided with a cavity penetrating through the first rotating part; the second rotating member passes through the cavity and is pivoted with the first rotating member.

Preferably, the surgical instrument further comprises a rear arm; the rear arm is fixed at the rear end of the joint, the tail of the rear arm is bent towards the direction pointed by the axis of the joint, and the bending direction of the tail is opposite to that of the bent part.

Preferably, the extending direction of the tail end of the rear arm forms an angle of 30 degrees with the front-back direction of the surgical instrument.

The following beneficial effects can be obtained through the technical scheme:

aiming at the anatomical characteristics of distributed walking of the upper and lower branches of uterine blood vessels, the joint of a surgical instrument for blocking the uterine blood vessels in cesarean section rotates to drive two forearms to rotate, and the two forearms rotate to simultaneously drive two chucks to close so as to quickly block blood flow; meanwhile, the anti-slip hole can block blood vessels penetrating in the anti-slip hole, the hemostatic effect is good, and the operation is simple.

Drawings

Fig. 1 shows a state diagram of a surgical instrument for blocking uterine vessels in a caesarean section when opened.

Fig. 2 shows a state diagram of the closure of a surgical instrument for blocking uterine vessels in a caesarean section.

Figure 3 shows a perspective view of the chuck.

Fig. 4 shows a perspective view of a joint.

Fig. 5 shows a perspective view of the snap-in part.

Figure 6 shows a front view of the chuck.

Fig. 7 shows a front view of a surgical instrument for blocking uterine vessels in a caesarean section.

Fig. 8 shows a side view of a surgical instrument for occluding uterine blood vessels in a caesarean section.

Figure 9 shows a schematic view of the incision of the various layers of the abdominal wall during the cesarean section.

Figure 10 shows a schematic view of an incision of the uterus during a caesarean section.

Fig. 11 shows a schematic view of the uterus being pulled out of the pelvic cavity to the extraperitoneal abdomen during a caesarean section, exposing blood vessels to the sides of the uterus.

Fig. 12 shows a schematic view of the occlusion of a large part of uterine blood vessels during a caesarean section on exposed uterine blood vessels on both sides of the uterus using a surgical instrument for the occlusion of uterine blood vessels during a caesarean section.

Figure 13 shows a schematic view of suturing the uterus during a caesarean section.

Fig. 14 shows a schematic view of the loosening of a surgical instrument for blocking uterine blood vessels in a caesarean section during a caesarean section.

Fig. 15 shows a schematic view of the abdominal closing during a caesarean section.

Description of the reference numerals

1-a chuck; 11-anti-slip part; 12-a collet body; 13-anti-slip holes; 14-a contact portion; 15-bending part; 2-forearm; 3-a joint; 31-a first rotating member; 32-a second rotating member; 4-rear arm; 5-a clamping part; 51-a plate; 52-clamping teeth; 6-a handle; 71-blood vessels; 72-pelvic cavity; 73-abdomen; 74-uterus; 75-incision.

Detailed Description

Exemplary embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that the detailed description is only intended to teach one skilled in the art how to practice the invention, and is not intended to exhaust all possible ways of practicing the invention, nor is it intended to limit the scope of the invention.

In the following description, the inner side means a side close to the center line in the left-right direction of the surgical instrument for blocking a uterine blood vessel in a caesarean section, and the outer side means a side away from the center line in the left-right direction of the surgical instrument for blocking a uterine blood vessel in a caesarean section.

Referring to fig. 1, 2, 3 and 7, the surgical instrument for blocking uterine blood vessels in cesarean section of the present embodiment includes: a chuck 1, a forearm 2 and a joint 3; the two chucks 1 are fixed at the front ends of the two forearms 2; two forearms 2 are fixed to the front ends of the joints 3.

The chuck 1 comprises a chuck body 12 and an anti-slip hole 13, wherein the chuck body 12 can be plate-shaped, and the anti-slip hole 13 penetrates through at least one chuck body 12 along the direction that two chucks approach to each other; the side walls of the antiskid holes 13 intersect in a line at one end thereof, the side walls of the antiskid holes 13 at the other end thereof are curved surfaces of circular arcs, and the size of the middle portion of the antiskid holes 13 continuously changes.

The joint 3 comprises two parts which are pivoted together, and the relative rotation of the two parts drives the forearm 2 to rotate, so that the two chucks 1 can be closed or far away from each other, and the two chucks 1 can be closed to realize the hemostasis operation.

Referring to fig. 1 and 4, the two parts of the joint 3 are a first rotating member 31 and a second rotating member 32. The first rotating member 31 is provided with a cavity penetrating therethrough; the first rotating member 31 may be a rectangular parallelepiped, a cavity may be formed by cutting the first rotating member 31, and the first rotating member 31 may also be formed by fixing an upper plate and a lower plate together with bolts, leaving a cavity between the two plates; the second rotating member 32 may be a thin plate, the second rotating member 32 is inserted into the cavity, and the second rotating member 32 is pivotally connected to the first rotating member 31.

Referring to fig. 8, the tail portion of the rear arm 4 is curved in an arc shape in the direction indicated by the axis of the joint 3, and the tail portion of the rear arm 4 and the bent portion 15 are curved in opposite directions; the extending direction of the tail end of the rear arm forms an included angle of 30 degrees with the front and back direction of the surgical instrument. The two rear arms 4 are fixed to the rear ends of the first rotating member 31 and the second rotating member 32, respectively. The rear arm 4 is bent to form the included angle of 30 degrees, which accords with the upper forceps angle of the operation, and is beneficial to the pelvic cavity naked dissection operation.

Referring to fig. 1 and 2, the surgical instrument for blocking uterine blood vessels in cesarean section comprises a handle 6, the handle 6 is fixed on the outer side of the tail part of the rear arm 4, the handle 6 is provided with a hole for placing fingers, the hole for placing fingers can be round, the fingers can be conveniently placed in the hole when the surgical instrument is used, and an operator can firmly hold the surgical instrument through the hole.

The two handles 6 are respectively shifted by fingers to be close to each other, the two handles 6 respectively drive one rear arm 4 to rotate around the pivot shafts of the first rotating part 31 and the second rotating part 32, the two rear arms 4 respectively drive the first rotating part 31 and the second rotating part 32 fixedly connected with the two rear arms, the second rotating part 32 rotates around the pivot shafts in the cavity of the first rotating part 31, meanwhile, the first rotating part 31 and the second rotating part 32 respectively drive one front arm 2 fixed at the front end of the first rotating part to rotate, and the two front arms 2 drive the two chucks 1 to mutually close to clamp blood vessels and/or parauterine tissues.

Referring to fig. 3 and 8, the surgical instrument further includes a bent portion 15; the bending part 15 is positioned at the joint of the chuck 1 and the forearm 2, and the bending part 15 enables the chuck 1 to bend towards the direction pointed by the axis of the joint 3; the extending direction of the clip 1 and the extension line of the front arm 2 form an angle of preferably 70 degrees to 80 degrees, more preferably 75 degrees. When performing the operation, under the unchangeable condition in joint 3's position, rotate rear arm 4 and drive 2 rotations of forearm, 2 drive chucks 1 rotations of forearm, because kink 15 has great crooked radian, chuck 1 can move about in its rotatory great within range in the place plane, can stanch the operation in great within range, convenient operation, it is effectual to stanch.

Referring to fig. 1 and 3, the surgical instrument includes a contact portion 14, the contact portion 14 being at the junction of the collet 1 and the forearm 5, the contact portion 14 being on opposite sides of the two collets 1. When the hemostasis operation is performed, the two clamping heads 1 are used for clamping blood vessels and/or parauterine tissues, the contact part 14 is in contact with the blood vessels and/or parauterine tissues, the surface of the contact part 14 is smooth, the blood vessels and/or parauterine tissues which are in contact cannot be rubbed or touched to be damaged, and the safety of the hemostasis operation is improved.

Referring to fig. 1, 2 and 3, the chuck body 12 is located at the front end of the bending portion 15, the opposite side surfaces of the two chuck bodies 12 are concave curved surfaces, when the two chuck bodies 12 are closed, an accommodating space is formed between the two chuck bodies 12, and the accommodating space can fix blood vessels and/or tissues beside the uterus, so as to prevent the blood vessels from falling off from the chuck bodies 12 and strengthen the blood vessel blocking; the presence of this receiving space prevents the two collet bodies 12 from being directly contacted to exert a large pressure on the blood vessels and/or parauterine tissue, causing damage.

Blood vessels and/or parauterine tissues pass through the accommodating space between the two chuck bodies 12 and enter the anti-skid holes 13 in the operation; on the basis that the accommodating space fixes and blocks the blood vessel and/or the parauterine tissue, the anti-skid hole 13 further fixes and blocks the blood vessel and/or the parauterine tissue which pass through, so as to stop bleeding and achieve good hemostatic effect.

Referring to fig. 1, 2 and 3, the cartridge 1 further includes an anti-slip portion 11; the anti-slip part 11 is arranged at the upper end part of the chuck body 12 and is arranged on the opposite side surfaces of the two chucks 1.

After the two chuck bodies 12 are used for fixing blood vessels and/or parauterine tissues, the two anti-slip parts 11 are mutually occluded, so that the friction force between the two chuck bodies 12 is increased, the two chuck bodies 12 are ensured to be firmly contacted, and the blood vessels and/or the parauterine tissues are firmly fixed.

The anti-slip part 11 comprises a groove and a bulge; the grooves and the protrusions can be in strip shapes, and are parallel to each other and arranged at intervals; the grooves and the protrusions may also be mutually crossed to form a grid; the grooves and the projections may also be points that are independent and spaced apart from each other.

Referring to fig. 1, 2 and 5, the surgical instrument for blocking uterine blood vessels in cesarean section comprises a clamping portion 5, the clamping portion 5 being fixed to the inner side of the junction of the rear arm 4 and the handle 6; the clamping portion 5 comprises a long-strip-shaped plate 51, a plurality of clamping teeth 52 are distributed on the plate 51 along the left and right directions, and the clamping teeth 52 on the two clamping portions 5 are oppositely arranged and matched with each other when the clamping device is used. The longitudinal section of each of the clamping teeth 52 is triangular, and a tooth space is formed between two adjacent clamping teeth 52. In this embodiment, the plate 51 and the latch teeth 52 may be integrally formed.

In the prior art, in the operation process, an operator is required to hold the surgical instrument all the time to ensure that two chucks are kept stably closed to realize stable hemostasis; however, the clamping head may loosen to cause hemostasis failure during long-term operation due to the reduced force applied to the surgical instrument by the operator without support.

When the surgical instrument for blocking uterine vessels in cesarean section is adopted for hemostasis, when an operation is performed, the blood vessels and/or tissues beside the uterus are fixed by the two chucks 1 for hemostasis, the tail part of the surgical instrument for blocking uterine vessels in cesarean section clamps the two clamping parts 5 together, namely, the clamping teeth 52 on one clamping part 5 are clamped in the tooth grooves on the other clamping part 5, the two clamping parts 5 are mutually fixed to ensure that the surgical instrument is fixed in a hemostasis state, and the surgical instrument is ensured to stably fix and block the blood vessels and/or tissues beside the uterus in the whole operation process. According to the size of the clamped blood vessel and/or the tissue beside the uterus, the clamping positions of the two clamping parts 5 are correspondingly adjusted so as to adjust the clamping tightness of the two clamping heads 1, so that the hemostatic requirements under various conditions are met.

Referring to fig. 8, in the present embodiment, the length of the collet 1 is preferably 16 mm, the length of the forearm 2 is preferably 60 mm, the length of the joint 3 is preferably 30 mm, and the sum of the lengths of the projection of the rear arm 4 and the projection of the handle 6 is preferably 130 mm in the anteroposterior direction of the surgical instrument;

in the extending direction of the chuck 1, the distance from the front end of the chuck 1 to the front end of the slip prevention hole 13 is preferably 10 mm, the length of the slip prevention hole 13 is preferably 25 mm, and the distance from the rear end of the slip prevention hole 13 to the rear end of the chuck 1 is preferably 5 mm;

in the width direction of the chuck 1, the width of the widest part of the chuck 1 is preferably 12 mm, and the width of the widest part of the anti-slip hole 13 is preferably 7 mm;

the thickness of the front end of the front arm 2 is preferably 3 mm, the thickness of the front end of the rear arm 4 is preferably 6 mm, and the thickness of the rear end of the rear arm 4 is preferably 3 mm;

the length of the handle 6 in the direction of extension of the rear end of the rear arm 4 is preferably 30 mm.

Referring to fig. 9 to 15, the surgical instrument for blocking uterine blood vessels in caesarean section of the present embodiment is applied to the caesarean section as follows:

the conventional cesarean section operation steps are as follows: the abdomen is cut into the peritoneal cavity, the lower uterine segment is exposed, the uterine wall is cut, and the lower uterine segment is dissected and then pregnant, particularly the placenta implantation, the bladder is pushed down to expose the lower uterine segment. Cutting the uterine wall, prolonging the incision, washing amniotic fluid, delivering the neonate, delivering to a assistant under the table for nursing, stripping the placenta, delivering, and suturing the uterus and the abdomen in sequence to close the incision. Since uterine blood vessels are not blocked before the placenta is stripped and delivered, the opening of the wound surface blood sinuses attached after the placenta is stripped can cause major hemorrhage.

Based on the above problems, the application steps of the surgical instrument for blocking uterine blood vessels in cesarean section of the embodiment in actual cesarean section are as follows:

(1) the abdomen 73 is first incised along the incision 75 in the abdomen into the peritoneal cavity, see fig. 9;

(2) after entering the peritoneal cavity, the lower section of uterus 74 is exposed, and the uterine wall is dissected from the lower section of uterus 74, see fig. 10;

(3) cutting a cut in the uterine wall and growing the cut along, washing the amniotic fluid and then delivering the neonate;

(4) drawing the uterus 74 out of the pelvic cavity 72 extraperitoneally, exposing blood vessels 71 on both sides of the uterus 74, i.e. uterine artery and vein vessels, see fig. 11;

(5) on the uterine blood vessels 71 exposed on both sides of the uterus 74, most of the uterine blood supply vessels are blocked using the surgical instrument for blocking uterine blood vessels in the cesarean section of the present embodiment, see fig. 12.

The specific operation process of the step is as follows: the handle 6 is shifted, the front arm 2 at the front end drives the chuck bodies 12 to rotate along with the rotation, the two chuck bodies 12 are closed, the uterine blood vessel is clamped in the accommodating space formed between the two chuck bodies 12, meanwhile, the uterine blood vessel passes through the anti-skid hole 13, and the uterine blood vessel is fixed and clamped to stop bleeding by the anti-skid hole 13 and the accommodating space; the clamping tightness of the two clamping parts 5 at the tail part is adjusted according to the size of the clamped uterine blood vessel, so that the chuck body 12 at the front end is in the optimal clamping state, the blood flow is effectively blocked, and the extrusion force is not too large; the anti-slip parts 11 at the ends of the two chuck bodies 12 are mutually occluded, so that the friction force between the two chuck bodies 12 is enhanced, the two chuck bodies 12 are firmly fixed, and stable hemostasis is realized; because the bending part 15 is provided with a larger radian, the chuck 1 can be driven to rotate within a larger angle range when the bending part 15 is rotated, and the chuck 1 is adjusted to a proper position and angle so as to clamp uterine vessels at different positions.

(6) After blocking most of uterine blood supply vessels using a surgical instrument for blocking uterine blood vessels in caesarean section, the placenta is stripped and delivered;

(7) after the placenta is stripped and delivered, the uterus 74 is sutured, see fig. 13;

(8) loosening the surgical instrument for blocking the uterine vessels in the cesarean section, see fig. 14;

(9) the abdominal 73 incisions are closed, see fig. 15.

It should be understood that the above embodiments are exemplary only, and are not intended to limit the present invention. Various modifications and alterations of the above-described embodiments may be made by those skilled in the art in light of the teachings of the present invention without departing from the scope thereof.

Claims (10)

1. Surgical instrument for blocking uterine vessels in caesarean section, comprising two forearms (2) and a joint (3), the two forearms (2) being fixed to the front end of the joint (3), characterized in that it further comprises two jaws (1);

the two chucks (1) are respectively fixed at the front ends of the two forearms (2), and each chuck (1) comprises a chuck body (12) and an anti-skid hole (13);

the anti-slip hole (13) penetrates at least one of the chuck bodies (12) in a direction in which the two chucks (1) approach each other;

the joint (3) comprises two parts which are pivoted together, the forearm (2) and the chuck (1) are driven to rotate through the relative rotation of the two parts, and the two chucks (1) are close to each other or closed to realize the hemostasis operation.

2. The surgical instrument for blocking uterine vessels in caesarean section of claim 1, characterized in that the side walls of the non-slip hole (13) at one end thereof intersect in a line, the side wall at the other end of the non-slip hole (13) is a curved surface of a circular arc, and the size of the middle portion of the non-slip hole (13) continuously changes.

3. Surgical instrument for occluding uterine vessels in caesarean section according to claim 1, characterized in that it further comprises a bend (15);

the bending part (15) is located at the joint of the chuck (1) and the front arm (2), the bending part (15) enables the chuck (1) to bend towards the direction pointed by the axis of the joint (3), and the bending part (15) bends into an arc shape.

4. Surgical instrument for occluding uterine vessels in caesarean section according to claim 1, characterized in that the extension direction of the gripping head (1) and the extension of the forearm (2) form an angle of 70 to 80 degrees.

5. Surgical instrument for occluding uterine vessels in caesarean section according to claim 1, characterized in that it further comprises a contact part (14);

the contact portion (14) is arranged at the joint of the clamping head (1) and the front arm (2) and is arranged at the opposite side surfaces of the two clamping heads (1), and the contact portion (14) is smooth.

6. Surgical instrument for occluding uterine vessels in a caesarean section according to claim 1, characterized in that the opposite sides of the two collet bodies (12) are concavely curved, which when the two collet bodies (12) are closed form a receiving space between the two collet bodies (12).

7. Surgical instrument for occluding uterine vessels in caesarean section according to claim 1, characterized in that the collet (1) further comprises an anti-slip portion (11);

the anti-slipping parts (11) are arranged at the front end parts of the chuck bodies (12) and are positioned on the opposite side surfaces of the two chucks (1).

8. Surgical instrument for occluding uterine vessels in caesarean section according to claim 1, characterized in that the two parts of the joint (3) are a first rotating part (31) and a second rotating part (32);

the first rotating member (31) is provided with a cavity penetrating through the first rotating member (31);

the second rotating member (32) passes through the cavity and is pivoted with the first rotating member (31).

9. Surgical instrument for blocking uterine vessels in caesarean section according to claim 3, characterized in that it further comprises a rear arm (4);

the rear arm (4) is fixed to the rear end of the joint (3), the tail of the rear arm (4) is bent in the direction indicated by the axis of the joint (3), and the bending direction of the tail is opposite to the bending direction of the bent part (15).

10. Surgical instrument for occluding uterine vessels in caesarean section according to claim 9, characterized in that the direction of extension of the trailing end of the trailing arm (4) makes an angle of 30 degrees with the antero-posterior direction of the surgical instrument.

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