A single use minimally invasive fascia closure device

Abstract

The utility model belongs to the technical field of medical equipment, provide a kind of disposable minimally invasive fascia closer, including closure fastener and suture thread passer.Closure fastener includes handle, the head end of handle has guide rod, the rear end of handle also has round pipe, slider structure in round pipe, the top of slider has circular cavity and baffle ring, a pair of notches are on baffle ring, then design have matching cap, a pair of clamping hook are in cap bottom, therefore after pushing slider to highest position upward, clamping hook can be automatically clamped into circular cavity, by baffle ring limit;When needing to push slider back downward, first 90 degrees can be rotated to cap, easy operation;And there is no pull ring structure, when using suture thread passer to carry out threading operation, not easy to touch pull ring to make limit invalid, so it is also more stable.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, and in particular relates to a disposable minimally invasive fascia closure device. Background Technology

[0002] A disposable minimally invasive fascia closure device is a medical device used to close surgical incisions during laparoscopic surgery. It typically consists of two parts: a closure component and a suture guide. The closure component comes in two types: wing-shaped and shield-shaped. The working principle of the minimally invasive fascia closure device is as follows: the closure component precisely positions the edge of the fascia, and then the suture guide is used to pass the suture through the fascia, achieving closure and fixation of the fascial layers, thereby closing the surgical incision.

[0003] The closure device for minimally invasive fascia closure includes a handle and a push rod. The push rod passes through the handle, and its head has a rotating steel shaft. The head of the steel shaft has a suture clamping block, which is connected to both sides of the handle via a pair of plastic folds. When the push rod is pushed down to its lowest position, the plastic folds unfold into a straight line, leading the suture out from the clamping block to both sides and backward. Then, the head of the closure device is inserted into the wound. Next, the push rod is pulled back, causing the plastic folds to bend into a triangle. At this point, the push rod needs to be rotated. The push rod and handle are fixed in a limit position to prevent the push rod from retracting. Then, the needle bar of a suture threader passes through the oblique hole on the handle, through the tissue near the bottom of the wound, and into the plastic folds to pull out the suture. The same procedure is performed on the other side, pulling out the suture on the other side, thus suturing the fascia layer at the bottom of the wound tissue.

[0004] This minimally invasive fascia closure device has some problems: 1. The end of the push rod usually has a large pull ring. When the pull ring is rotated to create a limit between the push rod and the handle, the pull ring can easily be accidentally touched during the operation of the suture threader, causing the limit between the push rod and the handle to disappear, affecting subsequent suture threading operations. 2. Because it is necessary to rotate the push rod to create a limit between it and the handle when pulling it back to the highest position, the operation is relatively cumbersome. Utility Model Content

[0005] In view of the above problems, the purpose of this utility model is to provide a disposable minimally invasive fascia closure device, which aims to solve the technical problems of unstable positioning and inconsistency in operation of existing minimally invasive fascia closure devices.

[0006] The present invention adopts the following technical solution:

[0007] A disposable minimally invasive fascia closure device includes a closure component and a suture threader. The closure component includes a handle with a guide rod at the head end and a circular tube at the rear end. A steel shaft is inserted into the handle, and a suture clamping block is located at the head end of the steel shaft. Plastic folding plates are fixed to both sides of the suture clamping block, and the ends of the plastic folding plates are fixed to the top of the guide rod. A slider is located inside the circular tube, and the lower end of the slider is fixed to the steel shaft. A groove is formed along the length of the side wall of the circular tube. The top of the slider has a circular cavity, and the top of the circular cavity is a retaining ring. The retaining ring has two notches along its diameter, the diameter of which is smaller than the diameter of the circular cavity, and the distance between the two notches is not less than the diameter of the circular cavity. A locking cap is rotatably mounted on the top of the circular tube, and a pair of hooks are located at the bottom of the locking cap.

[0008] Furthermore, the bottom of the hook is a guide slope, and the distance between the two ends of a pair of hooks is less than the diameter of the retaining ring.

[0009] Furthermore, wedges are fixed at both the top and bottom of the slider, and the connection between the wedges and the slider is located in the groove.

[0010] Furthermore, the top of the cap has two symmetrical arc grooves, each one tenth of the diameter, and the end face of the tube also has a pair of positioning posts, which are located in the arc grooves to form a 90-degree rotation limit.

[0011] Furthermore, the outer periphery of the cap has a colored indicator strip along the height direction.

[0012] Furthermore, the front end of the slider has a circular hole, and a matching short post is formed inside the handle facing the slider end, with damping friction between the short post and the circular hole.

[0013] The beneficial effects of this utility model are as follows: The structural feature is the internal slider structure of the circular tube. The top of the slider has a circular cavity and a retaining ring. The retaining ring has a pair of notches, and then a matching cap is designed. The bottom of the cap has a pair of hooks. Therefore, after the slider is pushed upward to the highest position, the hooks can automatically engage in the circular cavity and be limited by the retaining ring. When it is necessary to push the slider downward, the cap can be rotated 90 degrees first, which is simple to operate. Moreover, there is no pull ring structure. When using a thread threader for threading, it is not easy to touch the pull ring and cause the limiting to fail, so it is more stable. Attached Figure Description

[0014] Figure 1 This is a structural diagram of a suture threader.

[0015] Figure 2 This is a structural diagram of the closure fastener provided by this utility model.

[0016] Figure 3 This is a longitudinal sectional view of the closed fastener. Figure 1.

[0017] Figure 4 This is a longitudinal sectional view of the closed fastener. Figure 2 .

[0018] Figure 5 This is a cross-sectional view of the closed fastener.

[0019] Figure 6 This is a cross-sectional view of the slider. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model patent clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the scope of the present utility model.

[0021] To illustrate the technical solution described in this utility model, specific embodiments are described below.

[0022] For ease of explanation, only the parts relevant to the embodiments of this utility model are shown.

[0023] Combination Figure 1-5 As shown, a disposable minimally invasive fascia closure device includes a closure component (as shown in Figures 2-5) and a suture threader (as shown in Figure 1). The closure component includes a handle 1, a guide rod 2 at the head end of the handle 1, and a round tube 3 at the rear end of the handle 1. A steel shaft 4 is inserted inside the handle 1, and a suture clamping block 5 is located at the head end of the steel shaft 4. Plastic folding plates 6 are fixed to both sides of the suture clamping block 5, and the ends of the plastic folding plates 6 are fixed to the top of the guide rod 2. In the figure, the plastic folding plate 6 has four sections, with the middle two sections being longer. The first section is fixed to the side of the suture clamping block 5, and the last section is fixed to the top of the guide rod 2. From this structure, it can be seen that when the steel shaft moves up and down, the plastic folding plate 6 can unfold into a triangle and close into a straight line. The figure shows the unfolded state after the steel shaft is pulled up to the highest position. During use, the horizontal part of the unfolded plastic folding plate (i.e., the third section) adheres to the fascia layer at the bottom of the incision.

[0024] The circular tube 3 also contains a slider 7, the lower end of which is fixed to the steel shaft 4. The side wall of the circular tube 3 has a groove 31 along its length. The top of the slider 7 has a circular cavity 71, and the top of the circular cavity 71 is a retaining ring 72. The retaining ring 72 has two notches 73 along its diameter. The diameter of the retaining ring 72 is smaller than the diameter of the circular cavity 71, and the distance between the two notches is not less than the diameter of the circular cavity 71. The top of the circular tube 3 is also rotatably equipped with a cap 8, and the bottom of the cap 8 has a pair of hooks 81.

[0025] In the diagram, the bottom of the hook 81 is a guide slope, and the distance between the two ends of a pair of hooks 81 is less than the diameter of the retaining ring 72. During the upward movement of the slider, the guide slope of the hook 81 touches the inner edge of the retaining ring 72, and then automatically deforms under pressure until the hook portion of the hook 81 enters the circular cavity 71. The hook 81 then returns to its original shape, hooking the retaining ring to form a limit. This prevents the slider from moving inside the circular tube. When the cap 8 rotates 90 degrees, the hook 81 rotates accordingly until it aligns with the notch. Since the distance between the notches is not less than the diameter of the circular cavity, when the slider is pushed down, the hook 81 can exit from the notch, completing the limit unlocking process. The operation is simple.

[0026] In addition, to facilitate the movement of the slider 7, wedges 9 are fixed at both the top and bottom of the slider 7. The connection between the wedges 9 and the slider 7 is located within a groove 31, which serves as a guide. By providing the wedge structure, the operator can easily pull the wedges 9 upwards, allowing the slider to move upwards easily. Furthermore, as a preferred structure, as... Figure 6 As shown, the slider 7 also has guide bars 74 on both sides, and the inner wall of the circular tube 3 also has guide grooves 32, which further form movement limits and ensure movement stability.

[0027] To facilitate confirmation of the initial position and rotation angle of the cap 8, two symmetrical arc grooves 82, each one-tenth of the full circle, are formed on the top of the cap 8. A pair of positioning posts 33 are also formed on the end face of the circular tube 3, located within the arc grooves 82, providing a 90-degree rotation limit. A colored indicator strip 83 runs along the height of the outer periphery of the cap 8. The indicator strip 83 facing directly forward represents the initial state. Through the limiting action of the positioning posts 33 and the arc grooves 82, the rotation of the cap 8 can be accurately limited by 90 degrees, facilitating the removal of the hook 81.

[0028] Furthermore, the slider 7 has a circular hole 75 at its front end, and a matching short post 11 is formed inside the handle 1 facing the slider 7. There is damping friction between the short post 11 and the circular hole 75. When the slider is pushed to its lowest position, the plastic flap closes. At this time, the short post is inserted into the circular hole. Through damping friction, the slider is prevented from moving freely upwards, while not affecting the slider being pulled out by pulling the wedge.

[0029] The suture threader in this embodiment is an existing structure and has not been modified. The front end of the suture threader is a threading needle with a thread hook. The thread hook can be hidden inside the threading needle or extended from the threading needle by operating the buttons on the top and side. A pair of staggered guide holes 12 are also provided in the handle 1 for inserting the threading needle, which will not be described in detail here.

[0030] Since the use of closure fasteners and suture threaders is existing technology, only a brief explanation of the specific usage methods is provided here.

[0031] The usage method is as follows:

[0032] 1. With the cap in the initial position and the slider pushed to its lowest position, this is the initial state of the product, with the plastic folding plate closed. First, embed the stitching thread into the clamping block of the closing fastener (it has a circumferential groove and will not easily fall off). Pull the two ends of the stitching thread upwards along the groove on the plastic folding plate to complete the stitching thread preparation work.

[0033] 2. Insert the completed closure fastener into the surgical incision to be closed. Pinch the black wedge and pull it back until the hook of the cap automatically engages in the top circular cavity of the slider. At this time, the plastic fold plate is fully opened. Adjust the insertion position of the closure fastener according to the thickness of the tissue to be sutured so that the suture can pass through the tissue and be sutured.

[0034] 3. First, insert the threading needle into the threading needle guide hole. When the threading needle is fully inserted (at this time, the needle tip is out of the tissue), press the top threading device button to release the suture hook. The suture hook catches the suture, and then pull the threading device outward. Press the release button on the side of the threading device to reset the threading device. Repeat the above steps on the other side to pull out the suture at the other end.

[0035] 4. Pinch the black wedge again and push it forward to the front end to ensure that the plastic folding plate is closed (because there is damping friction between the short post and the round hole at this time, the plastic folding plate will not unfold easily). Slowly remove the closing fastener, and finally tighten the stitches at both ends. Fix the two ends of the stitches by tying the knots to complete the closure of the cut.

[0036] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A disposable minimally invasive fascia closure device, comprising a closure component and a suture threader, wherein the closure component includes a handle, a guide rod at the head end of the handle, a round tube at the rear end of the handle, a steel shaft inserted inside the handle, a suture clamping block at the head end of the steel shaft, plastic folding plates fixed to both sides of the suture clamping block, and the ends of the plastic folding plates fixed to the top of the guide rod, characterized in that: The circular tube also contains a slider, the lower end of which is fixed to a steel shaft. The side wall of the circular tube has a groove along its length. The top of the slider has a circular cavity, and the top of the circular cavity is a retaining ring. The retaining ring has two notches along its diameter. The diameter of the retaining ring is smaller than the diameter of the circular cavity, and the distance between the two notches is not less than the diameter of the circular cavity. The top of the circular tube is also rotatably fitted with a cap, and the bottom of the cap has a pair of hooks.

2. The disposable minimally invasive fascia closure device as described in claim 1, characterized in that: The bottom of the hook is a guide slope, and the distance between the two ends of a pair of hooks is less than the diameter of the retaining ring.

3. The disposable minimally invasive fascia closure device as described in claim 2, characterized in that: The slider is fixed with wedges at both the top and bottom, and the connection between the wedges and the slider is located in the groove.

4. The disposable minimally invasive fascia closure device as described in claim 3, characterized in that: The top of the cap has two symmetrical arc grooves, each one tenth of the diameter. The end face of the tube also has a pair of positioning posts, which are located in the arc grooves to form a 90-degree rotation limit.

5. The disposable minimally invasive fascia closure device as described in claim 4, characterized in that: The cap has a colored indicator strip along its height on its outer periphery.

6. A disposable minimally invasive fascia closure device as described in any one of claims 1-5, characterized in that: The slider has a round hole at its front end, and a matching short post is formed inside the handle facing the slider end. There is damping friction between the short post and the round hole.

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