Perineal wound suture dilator for normal delivery

Abstract

The utility model belongs to the technical field of medical instruments, and particularly relates to a perineum wound suture dilator for normal delivery. The device comprises two clamp parts which are horizontally arranged and hinged to each other, each clamp part comprises a handle, a bending rod and an end block, an expansion head is arranged below each end block, each expansion head is connected with the corresponding end block through an L-shaped connecting rod, lead screws are hinged to the opposite sides of the two handles, and the lead screws swing in the length directions of the lead screws; the lead screws are each provided with a nut forming a spiral pair with the corresponding lead screw, and an adjusting mechanism is arranged between the two nuts and used for connecting the two nuts and enabling the two nuts to rotate independently. According to the design, the lead screw is hinged to the handles, the nut moves on the lead screw, the distance between the two handles is adjusted, positioning of the distance between the two expansion heads is completed, it is guaranteed that the size of the perineum expanded by the expansion heads is kept unchanged in the suturing process, and suturing is facilitated; and through the cooperation of the nut and the screw rod, the operation is relatively simple.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical devices, in particular to a perineum wound suturing dilator for normal delivery. Background Art

[0002] During the normal delivery process, some primiparas have a tight posterior symphysis of the vagina, and tearing is inevitable during delivery. If the fetus is relatively large, the tearing may be more serious and may cause lacerations. In order to ensure the smooth delivery of the fetus and to prevent serious tearing or even damage to the anal sphincter, an episiotomy is used. After delivery, the perineum wound needs to be sutured, and because the perineal opening is in a closed state, a dilator is needed to open the perineum to facilitate suturing.

[0003] The prior art includes a left jaw part and a right jaw part, which are cross-arranged, and both the left jaw part and the right jaw part include a handle, a bending rod and an end block, and both the end blocks are fixedly connected with an expansion head through an L-link, and the opening and closing ends of the handle are fixedly connected to a disc, and a rod is slidably connected between the two discs, and the rod is located between the two discs and sleeved with a spring, and the rod is located on the outside of the two discs and is threadedly connected with a positioning nut; although this technology sets the expansion head at the same side as the handle through the L-link, it is more convenient and easy to operate during the double-person suturing operation; however, the technology cannot realize the method of positioning the distance between the two expansion heads by the rod, spring and positioning nut, so as to open the perineum, because the two handles are hinged by the bending rod, and when the handles are separated to both sides, the trajectory of the handles swinging at the intersection of the bending rods is an arc, and the rod is a straight rod, so the rod will hinder the separation of the two handles, and the two handles cannot be separated to both sides, so that the distance between the expansion heads cannot be positioned. Utility Model Content

[0004] The utility model aims to provide a dilator for suturing perineal wounds during normal delivery, which is convenient for positioning the distance between two dilating heads.

[0005] The perineal wound suturing dilator for normal delivery comprises two horizontally arranged and mutually hinged clamps, the clamps comprising a handle, a bending rod and an end block, an expansion head is arranged below the end block, the expansion head is connected to the end block through an L-connecting rod, the two handles are hinged on opposite sides with a screw rod, and the screw rod swings along its length direction; the screw rod is provided with a nut that forms a spiral pair with the screw rod, and an adjustment mechanism is arranged between the two nuts, and the adjustment mechanism is used to connect the two nuts and allow the two nuts to rotate independently.

[0006] Furthermore, the adjustment mechanism includes a first fixed block and a second fixed block, the first fixed block and the second fixed block are located between the two screw rods and parallel to the ends of the screw rods, a fixed tube is fixed to the side of the first fixed block close to the second fixed block, a rotating groove for inserting the fixed tube and rotating independently is opened on the second fixed block, a bearing is arranged between the fixed tube and the rotating groove, and the first fixed block and the second fixed block are respectively connected to corresponding nuts through connecting components.

[0007] Furthermore, the connecting assembly includes a connecting pipe, which is sleeved on the screw rod, one end of the connecting pipe is connected to the first fixed block or the second fixed block, and the other end of the connecting pipe is connected to the corresponding nut.

[0008] Furthermore, the first fixing block and the second fixing block are provided with through holes for the ends of the screw rod to pass through.

[0009] Furthermore, a limiting block is fixed to the outer side wall of the movable end of the screw rod to prevent the nut from falling off.

[0010] Furthermore, the side opposite to the expansion head is an arc-shaped structure.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] The utility model articulates the screw rod and the handle, and cooperates with the spiral pair of the nut and the screw rod, so that the nut moves on the screw rod, adjusts the distance between the two handles, completes the positioning of the distance between the two expansion heads, and ensures that the size of the perineum expanded by the expansion head remains unchanged during the suturing process, which is convenient for suturing; and the cooperation of the nut and the screw rod makes the operation relatively simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model;

[0014] Figure 2 for Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0015] Figure 3 for Figure 1 A schematic diagram of an enlarged front view structure of the invention;

[0016] The names of the components in the figure are: 1. handle 2. bending rod 3. expansion head 4. end block 5. first fixing block 6. nut 7. screw rod 8. connecting pipe 9. limit block 10. fixing pipe 11. second fixing block 12. L connecting rod. DETAILED DESCRIPTION

[0017] The present invention is further described below through specific embodiments in conjunction with the accompanying drawings, but the present invention is not limited thereto. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

[0018] The present embodiment of the present invention is a perineal wound suturing dilator for normal delivery, such as Figure 1 , Figure 2 and Figure 3 As shown, it includes two horizontally arranged and mutually hinged pliers, the pliers include a handle 1, a bending rod 2 and an end block 4, the two bending rods 2 are crossed and hinged by an axis, an expansion head 3 is arranged below the end block 4, the expansion head 3 is connected to the end block 4 through an L-link 12, the structure of the handle 1, the bending rod 2, the end block 4 and the L-link 12 is an existing known structure, which is consistent with the structure of the handle, bending rod, end block and L-link in patent No. CN202221050378.9, and the way in which the expansion head 3 is connected to the end block 4 through the L-link 12 is consistent with the connection method of the expansion head, L-link and end block in the above-mentioned patent.

[0019] The two handles 1 are hinged on one side opposite to each other, and the screw rod 7 swings along its length direction. The right side wall of the left handle 1 is hinged with a screw rod 7, and the left side wall of the right handle 1 is hinged with a screw rod 7. The screw rod 7 swings horizontally back and forth. One end of the screw rod 7 hinged to the handle 1 is a hinged end, and the other end is a movable end. Clamping blocks are horizontally arranged on the upper and lower sides of the hinged end of the screw rod 7, and the clamping block is fixed to the handle 1. The hinged end of the screw rod 7 is provided with a mounting hole that communicates with the upper and lower parts, and a shaft is independently installed in the mounting hole. The upper and lower ends of the shaft extend beyond the mounting hole and are fixed to the clamping block. The screw rod 7 is hinged between the two clamping blocks through the shaft to swing horizontally back and forth.

[0020] The screw rods 7 are each provided with a nut 6 which forms a spiral pair therewith. The cooperation mode of the nut 6 and the screw rod 7 is consistent with the cooperation mode of the existing screw rod and nut, which is convenient for rotating the nut 6 and is relatively labor-saving. By rotating the nut 6, the nut 6 is horizontally moved on the screw rod 7, thereby changing the distance between the two handles 1. When the distance between the two handles 1 is minimized by the nut 6 and the screw rod 7, the two expansion heads 3 are in a fitted state.

[0021] Since the screw rod 7 is hinged to the handle 1, when the nut 6 moves on the screw rod 7, the angle between the screw rod 7 and the handle 1 and the angle between the two bending rods 2 will change, so that the distance between the two handles 1 can be adjusted, that is, an isosceles triangle is formed between the two handles 1 and the nut 6 and the screw rod 7, the two handles 1 are two equal sides, the nut 6 and the screw rod 7 are the base, and the lengthening of the base is adjusted by changing the angles of the base angle and the top angle.

[0022] When the left nut 6 is located at the leftmost end of the left screw rod 7 and the right nut 6 is located at the rightmost end of the right screw rod 7, the distance between the two handles 1 is the smallest; conversely, when the left nut 6 is located at the rightmost end of the left screw rod 7 and the right nut 6 is located at the leftmost end of the right screw rod 7, the distance between the two handles 1 is the largest, that is, the left nut 6 moves to the left and the right nut 6 moves to the right, and the distance between the two handles 1 becomes smaller; conversely, the left nut 6 moves to the right and the right nut 6 moves to the left, and the distance between the two handles 1 becomes larger.

[0023] A first fixed block 5 and a second fixed block 11 are vertically arranged between the two screw rods 7. The first fixed block 5 and the second fixed block 11 are both circular plates. The first fixed block 5 and the second fixed block 11 are parallel to the ends of the screw rod 7. A fixed tube 10 is fixed to the side of the first fixed block 5 close to the second fixed block 11. The diameters of the first fixed block 5 and the second fixed block 11 are consistent. The outer diameter of the fixed tube 10 is smaller than the diameters of the first fixed block 5 and the second fixed block 11. A rotating groove for inserting and independently rotating the fixed tube 10 is opened on the second fixed block 11. The rotating groove is a groove of a circular structure. The first fixed block 5 is located on the right side of the second fixed block 11. The fixed tube 10 is fixed to the left side wall of the first fixed block 5, and the rotating groove is opened on the right side wall of the second fixed block 11. A bearing is arranged between the fixed tube 10 and the rotating groove. The inner ring of the bearing is fixedly sleeved on the fixed tube 10, and the outer ring of the bearing is fixed to the side wall of the rotating groove. The first fixed block 5 and the second fixed block 11 are connected by the bearing, and the first fixed block 5 and the second fixed block 11 can rotate independently of each other, so that the two nuts 6 can rotate independently.

[0024] The first fixed block 5 or the second fixed block 11 is fixedly connected to the corresponding nut 6 by the connecting tube 8, the connecting tube 8 is sleeved on the screw rod 7, one end of the connecting tube 8 is connected to the first fixed block 5 or the second fixed block 11, and the other end of the connecting tube 8 is connected to the corresponding nut 6, the left end of the left connecting tube 8 is fixed to the left nut 6, the right end of the left connecting tube 8 is fixed to the second fixed block 11, the left end of the right connecting tube 8 is fixed to the first fixed block 5, and the right end of the right connecting tube 8 is fixed to the right nut 6, the first fixed block 5 and the second fixed block 11 are connected to the corresponding nut 6 through the connecting tube 8, and the contact area between the finger and the nut 6 is increased by the connecting tube 8, which is convenient for rotating the nut 6; this paragraph of text as a whole constitutes a connecting assembly that connects the first fixed block 5 and the second fixed block 11 to the nut 6. Of course, the connecting assembly can also be multiple connecting rods, and the first fixed block 5 and the second fixed block 11 are fixedly connected to the corresponding nut 6 through the connecting rods.

[0025] The above two paragraphs constitute an adjustment mechanism for connecting two nuts 6 and independently rotating the two nuts 6. In some embodiments, the adjustment mechanism can also be bearing-free, and a fixing rod is fixed to the right side wall of the second fixing block 11, one end of the fixing rod is located in the fixing tube 10, and a ring is fixedly sleeved on the outer side wall of the fixing rod located in the fixing tube 10, and a limiting plate is fixed to the left end of the fixing tube 10 to prevent the ring from detaching. In this way, the limiting plate blocks the ring, thereby connecting the first fixing block 5 and the second fixing block 11, and the fixing rod rotates in the fixing tube 10 to make the two nuts 6 rotate independently.

[0026] The first fixed block 5 and the second fixed block 11 are provided with through holes for the ends of the screw rod 7 to pass through. The through holes on the first fixed block 5 and the second fixed block 11 are through holes that are connected to the left and right. Since the through holes are provided on the first fixed block 5 and the second fixed block 11, the first fixed block 5 and the second fixed block 11 will not collide with the movable end of the screw rod 7, and the movable end of the screw rod 7 can pass through, and the movable ends of the two screw rods 7 can pass through the through holes and contact each other. When the length of the screw rod 7 remains unchanged, the adjustment position of the nut 6 on the screw rod 7 becomes wider, so that the distance between the two handles 1 can become smaller.

[0027] A limit block 9 is fixed to the outer side wall of the movable end of the screw rod 7 to prevent the nut 6 from detaching. The limit block 9 is fixed to the outer side wall of the right end of the left screw rod 7, and the limit block 9 is fixed to the outer side wall of the left end of the right screw rod 7. The limit block 9 on the left side can prevent the nut 6 on the left side from detaching from the right end of the left screw rod 7, while the limit block 9 on the right side can prevent the nut 6 on the right side from detaching from the left end of the right screw rod 7, so that the maximum distance between the two handles 1 can be controlled.

[0028] The opposite side of the expansion head 3 is an arc-shaped structure, the left side wall of the left expansion head 3 is an arc-shaped structure, the right side wall of the right expansion head 3 is an arc-shaped structure, and the front end of the expansion head 3 is closed, that is, the end that is first inserted into the perineum is closed, so that the two expansion heads 3 are in a fit state and are test tube-shaped as a whole, which is convenient for the expansion head 3 to be inserted into the perineum.

[0029] Working principle:

[0030] After giving birth, when there is a wound that needs to be sutured, the mother can rotate the nut 6 to minimize the distance between the two handles 1, so that the two expansion heads 3 fit together, and then insert the expansion head 3 into the perineum of the mother, and then rotate the nut 6 to increase the distance between the two handles 1, so that the two expansion heads 3 are separated and the perineum is stretched open. By rotating the nut 6, the position of the nut 6 on the screw rod 7 is controlled, and the distance between the two handles 1 is controlled to complete the positioning of the distance between the two expansion heads 3, thereby ensuring that the size of the perineum stretch remains unchanged during the suturing process, and the medical staff only needs to hold the handle 1 without moving, and there is no need to control the clamping force between the two handles 1, which is more labor-saving, makes the operation simpler, and makes suturing more convenient.

Claims

1. A perineal wound suturing dilator for normal delivery, comprising two horizontally arranged and mutually hinged clamps, the clamps comprising a handle (1), a bending rod (2) and an end block (4), an expansion head (3) is arranged below the end block (4), and the expansion head (3) is connected to the end block (4) through an L-type connecting rod (12), characterized in that: A screw rod (7) is hingedly connected to the opposite side of the two handles (1), and the screw rod (7) swings along its length direction; a nut (6) is arranged on the screw rod (7) and is in a spiral pair with the screw rod (7), and an adjustment mechanism is arranged between the two nuts (6), and the adjustment mechanism is used to connect the two nuts (6) and allow the two nuts (6) to rotate independently.

2. The perineal wound suturing dilator for normal delivery according to claim 1, characterized in that: The adjustment mechanism comprises a first fixed block (5) and a second fixed block (11), the first fixed block (5) and the second fixed block (11) being located between the two screw rods (7) and parallel to the ends of the screw rods (7), a fixed tube (10) being fixed on one side of the first fixed block (5) close to the second fixed block (11), a rotating groove for inserting the fixed tube (10) and independently rotating is provided on the second fixed block (11), a bearing is provided between the fixed tube (10) and the rotating groove, and the first fixed block (5) and the second fixed block (11) are respectively connected to corresponding nuts (6) through connecting components.

3. The perineal wound suturing dilator for normal delivery according to claim 2, characterized in that: The connection assembly comprises a connection pipe (8), the connection pipe (8) is sleeved on the screw rod (7), one end of the connection pipe (8) is connected to the first fixed block (5) or the second fixed block (11), and the other end of the connection pipe (8) is connected to the corresponding nut (6).

4. The perineal wound suturing dilator for normal delivery according to claim 3, characterized in that: The first fixing block (5) and the second fixing block (11) are provided with through holes for the ends of the screw rod (7) to pass through.

5. The perineal wound suturing dilator for normal delivery according to claim 4, characterized in that: A limiting block (9) is fixed to the outer side wall of the movable end of the screw rod (7) to prevent the nut (6) from falling off.

6. The perineal wound suturing dilator for normal delivery according to claim 1 or 5, characterized in that: The side opposite to the expansion head (3) is an arc-shaped structure.

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