A tendon suturing surgical retractor

Abstract

The utility model belongs to tendon suture operation traction technical field especially relates to a kind of tractor for tendon suture operation. Including two traction hooks, traction hook is connected with support arm, the connecting end of two support arms is provided with rotating mechanism, the rotating mechanism includes rotary seat, rotary seat is fixed on one of support arm, another support arm is fixed with eye ring;Ratchet is fixed on the front side wall of rotary seat, ratchet is independently sleeved with rotating sleeve ring, eye ring is independently sleeved on rotating sleeve ring, the inner ring of rotating sleeve ring is provided with the pawl of locking ratchet single rotation direction, locking assembly that can be locked rotating sleeve ring is provided on eye ring;The front end of ratchet is fixed with end cap that limits the falling of rotating sleeve ring and eye ring. The utility model is through the pawl and ratchet to form ratchet mechanism, make support arm only clockwise rotation keep traction hook to the traction of operation mouth, automatically can realize locking, to reduce the working procedure brought by manual operation.

Description

Technical Field

[0001] This utility model belongs to the field of tendon suture surgery traction technology, and in particular relates to a traction device for tendon suture surgery. Background Technology

[0002] Tendon suturing is a typical application of microsurgery, primarily used to repair tendon ruptures caused by trauma, cutting, or chronic wear. Because of the delicate structure of tendons and the need for precise alignment and suturing within a limited surgical field, the surgery is usually performed under a microscope or magnifying glass to ensure accurate anastomosis and postoperative functional recovery.

[0003] Tendon suturing surgery often requires the use of a traction device to help the surgeon pull back the patient's skin to expose the surgical field. Currently available traction devices require a locking mechanism to maintain traction after application. Traditional locking mechanisms typically require manual locking by the surgeon, adding an extra step to the procedure and potentially reducing surgical efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a traction device for tendon suture surgery that automatically completes traction and locking, reducing the need for manual locking operations.

[0005] The aforementioned tendon suture traction device includes two traction hooks that can open and close relative to each other. Each traction hook is connected to a support arm. The connecting end of the two support arms is provided with a rotating mechanism that allows them to rotate relative to each other. The rotating mechanism includes a rotating seat, which is fixed to one of the support arms, and a collar is fixed to the other support arm. A ratchet is fixed to the front side wall of the rotating seat, and a rotating collar is independently fitted on the ratchet. The collar is independently fitted on the rotating collar. The inner ring of the rotating collar is provided with a pawl that locks a single rotation direction of the ratchet. The collar is provided with a locking component that can lock the rotating collar. An end cap is fixed to the front end of the ratchet to prevent the rotating collar and the collar from falling off.

[0006] Furthermore, the rotating seat is fixed to the upper support arm, and the collar is fixed to the lower support arm; the locking end of the pawl abuts against the ratchet teeth and restricts the ratchet from rotating counterclockwise.

[0007] Furthermore, the locking assembly includes a locking screw, and a first threaded hole is provided on the side wall of the collar, which is internally and externally connected and threadedly engaged with the locking screw. The locking end of the locking screw abuts against the outer ring of the rotating collar.

[0008] Furthermore, a second threaded hole is provided at the center of the ratchet, and a threaded post that is threadedly engaged with the second threaded hole is fixed at the center of the end cap.

[0009] Furthermore, there are four pawls that are fixed at equal intervals on the inner ring of the rotating collar; all pawls are made of elastic material.

[0010] Furthermore, the two support arms are on the same plane.

[0011] Furthermore, the hook gate of the traction hook is located on its outer side.

[0012] Compared with the prior art, the present invention has the following beneficial effects: This invention uses a ratchet mechanism composed of a pawl and a ratchet wheel, which allows the support arm to rotate only clockwise to maintain the traction hook on the surgical incision, and can automatically lock, thereby reducing the work steps caused by manual operation. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 1 Enlarged structural diagram at point A; Figure 3 This is a three-dimensional structural diagram of the present invention; Figure 4 This is a three-dimensional structural diagram of the rotating base and the support arm; Figure 5 This is a three-dimensional structural diagram of the collar and support arm; Figure 6 This is an exploded view of the rotating mechanism. The components in the diagram are named as follows: 1. Towing hook; 2. Support arm; 3. Collar; 4. Ratchet; 5. Pawl; 6. Locking screw; 7. Rotating collar; 8. End cap; 9. Rotating seat. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention. Example

[0015] This embodiment describes a traction device for tendon suturing surgery, such as... Figures 1 to 6As shown, the device includes two traction hooks 1 that can open and close vertically. Each traction hook 1 is connected to a support arm 2, which is curved inwards. The upper traction hook 1 is fixed to the support end of the upper support arm 2, and the lower traction hook 1 is fixed to the support end of the lower support arm 2. The hook gate of the traction hook 1 is located on its outer side. The outer side refers to the side outside the two traction hooks 1, while the area between the two traction hooks 1 is the inner side. In use, the two traction hooks 1 are placed on either side of the surgical incision to pull the incision open, and the support arm 2 is used to maintain support.

[0016] The connecting ends of the two support arms are provided with a rotating mechanism that allows them to rotate relative to each other. The rotating mechanism includes a rotating seat 9, which is fixed to one of the support arms 2, and a collar 3 is fixed to the other support arm 2. The two support arms 2 are on the same plane. During production, the rotating seat 9 is fixed to the upper support arm 2, and the collar 3 is fixed to the lower support arm 2.

[0017] like Figure 4 As shown, the rotating seat 9 is fixed to the lower half of the connecting end of the upper support arm 2.

[0018] like Figure 5 As shown, the collar 3 is fixed to the upper half of the connecting end of the lower support arm 2. This ensures that although the two support arms 2 are on the same plane, the rotating seat 9 and the collar 3 are positioned front and back.

[0019] like Figure 2 , Figure 3 and Figure 6 As shown, a ratchet 4 is fixed on the front side wall of the rotating seat 9. A rotating collar 7 is independently mounted on the ratchet 4. A collar 3 is independently mounted on the rotating collar 7. A pawl 5 is provided on the inner ring of the rotating collar 7 to lock the single rotation direction of the ratchet 4.

[0020] The side wall of the collar 3 has a first threaded hole that communicates internally and externally. A locking screw 6, threaded to the first threaded hole, is inserted into the first threaded hole. The locking end of the locking screw 6 rests against the outer ring of the rotating collar 7. This section constitutes a locking assembly for locking the collar 3 and the rotating collar 7. During use, when the rotating collar 7 is locked by the locking screw 6, rotation of the collar 3 will drive the rotating collar 7 to rotate. The nut of the locking screw 6 has an anti-slip feature to facilitate rotation by the doctor. The outer ring of the rotating collar 7 may have a rough texture to further facilitate locking of the locking screw 6.

[0021] Since the ratchet 4 is located on the front wall of the rotating seat 9, the collar 3 is located on the front side of the rotating seat 9, and the collar 3 and the rotating seat 9 are in close contact with each other. The collar 3 and the rotating seat 9 rotate around the ratchet 4, and the two support arms 2 also rotate around each other at the same time. When the collar 3 rotates, it drives the rotating collar 7 to rotate, and when the rotating seat 9 rotates, it drives the ratchet 4 to rotate. The locking end of the locking screw 6 rests against the outer ring of the rotating collar 7, which means that the rotating seat 9 can rotate clockwise, but if it wants to rotate counterclockwise, it will be constrained by the pawl 5. Therefore, the support arm 2 located on the upper side can only rotate clockwise, so that the two traction hooks 1 open, thereby maintaining traction on the patient's surgical incision, exposing the internal tendon part, and facilitating the doctor's surgical operation.

[0022] like Figure 1 As shown, there are four pawls 5 fixed at equal intervals on the inner ring of the rotating collar 7; all pawls 5 are made of elastic material; each pawl 5 is a spring plate, and the four pawls 5 work together to make the force restraining the ratchet 4 counterclockwise more stable. The elastic material of the pawls 5 does not restrict the ratchet 4 from rotating clockwise.

[0023] The front end of the ratchet 4 is fixed with an end cap 8 that restricts the rotation of the collar 7 and the collar 3 from falling off. A second threaded hole is provided at the center of the ratchet 4, and a threaded post that is threadedly engaged with the second threaded hole is fixed at the center of the end cap 8. The rotating seat 9, the ratchet 4, and the end cap 8 are interconnected to constrain the collar 3 between the rotating seat 9 and the end cap 8. The front and rear sides of the collar 3 are respectively in contact with the rotating seat 9 and the end cap 8 to prevent the collar 3 from shaking due to gaps.

[0024] In actual use, the two traction hooks 1 are placed between the surgical openings, and the two support arms 2 are spread apart. The surface of the surgical opening is pulled open by the two traction hooks 1, exposing the tendon tissue. During traction, the upper support arm 2 rotates clockwise, and the ratchet 4 and pawl 5 restrict the counterclockwise rotation of the support arm 2. Therefore, the two support arms 2 cannot close inward, thus maintaining traction on the surgical opening without the need for manual locking, thereby reducing operation steps and improving surgical efficiency to a certain extent. However, when removing the traction hooks 1, the support arms 2 need to close inward. This can be done by loosening the locking screw 6, releasing the lock on the rotating collar 7, allowing the rotating collar 7 to rotate with the ratchet 4, thus no longer restricting the counterclockwise rotation of the ratchet 4, allowing the support arms 2 to close inward and the traction hooks 1 to be removed.

Claims

1. A traction device for tendon suture surgery, comprising two traction hooks (1) that can open and close relative to each other, each traction hook (1) being connected to a support arm (2), and the connecting end of the two support arms being provided with a rotating mechanism that allows the two to rotate relative to each other, characterized in that: The rotating mechanism includes a rotating seat (9), which is fixed on one of the support arms (2) and a collar (3) is fixed on the other support arm (2); a ratchet (4) is fixed on the front side wall of the rotating seat (9), and a rotating collar (7) is independently fitted on the ratchet (4). The collar (3) is independently fitted on the rotating collar (7). A pawl (5) is provided on the inner ring of the rotating collar (7) to lock the ratchet (4) in a single rotation direction. A locking component is provided on the collar (3) to lock the rotating collar (7); an end cap (8) is fixed on the front end of the ratchet (4) to prevent the rotating collar (7) and the collar (3) from falling off.

2. The traction device for tendon suturing surgery according to claim 1, characterized in that: The rotating seat (9) is fixed on the upper support arm (2), and the collar (3) is fixed on the lower support arm (2); the locking end of the pawl (5) abuts against the ratchet teeth of the ratchet (4) and restricts the ratchet (4) from rotating counterclockwise.

3. The traction device for tendon suturing surgery according to claim 1, characterized in that: The locking assembly includes a locking screw (6), and a first threaded hole is provided on the side wall of the collar (3) that is internally and externally connected and threadedly engaged with the locking screw (6). The locking end of the locking screw (6) rests against the outer ring of the rotating collar (7).

4. The traction device for tendon suturing surgery according to claim 1, characterized in that: The ratchet (4) has a second threaded hole at its center, and the end cap (8) has a threaded post that is threadedly engaged with the second threaded hole at its center.

5. The traction device for tendon suturing surgery according to claim 1, characterized in that: The pawls (5) are four in number and are fixed at equal intervals on the inner ring of the rotating collar (7); the pawls (5) are all made of elastic material.

6. The traction device for tendon suturing surgery according to claim 1, characterized in that: The two support arms (2) are on the same plane.

7. The traction device for tendon suturing surgery according to claim 1, characterized in that: The hook gate of the traction hook (1) is located on its outer side.

Images