Endoscopic stitching instrument

Abstract

The invention relates to the technical field of medical instruments, in particular to an endoscopic stitching instrument which comprises a holding part, a first chain wheel is rotationally matched with the inner side wall of the holding part, a fixing shaft is coaxially and fixedly connected to the first chain wheel, and the end, away from the first chain wheel, of the fixing shaft penetrates through the side wall of the holding part and is coaxially and fixedly connected with a hand twisting wheel; a second chain wheel is rotationally matched with the inner side wall of the holding part, a chain is tensioned between the second chain wheel and the first chain wheel, and a friction wheel is coaxially and fixedly connected to the second chain wheel; the bottom end of the holding part is fixedly connected with a clamping ring, an annular groove is formed in the clamping ring, an annular needle is in sliding fit in the annular groove, and the friction wheel is in rolling fit with the annular needle. Through the design of the handheld stitching instrument, the operation process can be simplified, so that the operation efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to an endoscopic suture device. Background Technology

[0002] With the continuous advancement of minimally invasive surgical techniques, many traditional surgeries can now be performed endoscopically. However, suturing various wounds endoscopically remains one of the challenges of endoscopic surgery. Early endoscopic surgeries relied on manual suturing, but the limited operating space and instrument movement angles of the endoscope restrict the procedure. Manual suturing is time-consuming, increases anesthesia risks, and requires highly skilled operators, resulting in a steep learning curve.

[0003] Some companies have launched various suture devices suitable for endoscopic suturing, but these suture devices are usually complex in design, some of which are bulky, increasing the difficulty of hand-held control. Moreover, the operation process is extremely cumbersome, the suture strength is difficult to control precisely, and the cost of use is very expensive. These factors seriously hinder their widespread application. Therefore, it is necessary to propose an endoscopic suture device to solve existing clinical problems, simplify the endoscopic suturing operation process, and improve surgical efficiency. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides an endoscopic suture device. The handheld suture device design simplifies the operation process, thereby improving surgical efficiency.

[0005] To achieve the above objectives, the technical solution of the present invention is as follows: An endoscopic suture device includes a gripping part, a first sprocket is rotatably fitted on the inner sidewall of the gripping part, a fixed shaft is coaxially fixedly connected to the first sprocket, and a hand-twisting wheel is coaxially fixedly connected to the end of the fixed shaft away from the first sprocket through the sidewall of the gripping part.

[0006] A second sprocket is rotatably fitted on the inner wall of the grip, and a chain is tensioned between the second sprocket and the first sprocket. A friction wheel is coaxially fixedly connected to the second sprocket.

[0007] A retaining ring is fixedly connected to the bottom of the gripping part. An annular groove is opened inside the retaining ring, and an annular needle slides in the annular groove. The friction wheel and the annular needle roll in contact.

[0008] The technical principles of the above solution are as follows:

[0009] Insert the suture into the through hole on the circular needle, and insert the retaining ring into the tissue and skin at the site to be sutured. By turning the handwheel, the first sprocket is driven to rotate, which in turn drives the second sprocket to rotate, which in turn drives the friction wheel to rotate, causing the circular needle to rotate and pass through the tissue to complete one suture.

[0010] The above approach has the following beneficial effects:

[0011] 1. The present invention, through the design of the handheld grip, is relatively small in size, allowing operators to control it more easily by hand, reducing the difficulty of hand operation, and solving the problem of inconvenient operation caused by the large size of existing thread sewing machines.

[0012] 2. The circular needle rotation suturing method in this invention enables the suture to pass through the tissue more stably, and the suturing process is relatively smooth, which can ensure the reliability of the suturing to a certain extent.

[0013] Furthermore, an anti-slip sleeve is fitted on the outer wall of the grip, and the anti-slip sleeve is made of rubber material.

[0014] Beneficial effects: The rubber anti-slip sleeve has good anti-slip properties, which can increase the friction between the operator's hand and the grip, and prevent the suture from slipping due to sweaty hands or other reasons during the operation, thereby improving the stability and safety of the operation.

[0015] Furthermore, the tooth ratio of the first sprocket to the second sprocket is such that the number of teeth on the first sprocket is less than the number of teeth on the second sprocket.

[0016] Beneficial effects: This gear ratio setting enables speed reduction transmission. During operation, the operator rotates the handwheel with a relatively large amplitude, while the second sprocket and friction wheel rotate with a relatively small amplitude. This makes the rotation speed of the circular needle easier to control, allowing for more precise suturing and avoiding unnecessary tissue damage caused by excessive rotation.

[0017] Furthermore, a thread winder for storing the sewing thread is provided inside the grip section.

[0018] Beneficial effects: The suture reel can neatly store sutures, preventing them from scattering, knotting, or tangling during surgery, thus reducing the likelihood of suture tangles affecting surgical procedures. When sutures are needed, the operator can easily extract the required length by rotating the reel, facilitating precise control of suture usage and avoiding waste.

[0019] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] Figure 1 This is a front view of the endoscopic suture device of the present invention.

[0021] Figure 2 This is a frontal cross-sectional view of the endoscopic suture device of the present invention.

[0022] Figure 3 for Figure 2 Enlarged view of section A.

[0023] The reference numerals in the accompanying drawings of the instruction manual include: 1. gripping part; 2. first sprocket; 3. fixed shaft; 4. handwheel; 5. second sprocket; 6. friction wheel; 7. retaining ring; 8. circular needle; 9. winding wheel. Detailed Implementation

[0024] The following detailed description illustrates the specific implementation method:

[0025] Implementation, for example Figure 1 , Figure 2 and Figure 3 As shown, an endoscopic suture device includes a gripping part 1, a first sprocket 2 rotatably fitted on the inner side wall of the gripping part 1, a fixed shaft 3 coaxially fixed to the first sprocket 2 by screws, and a hand-tightening wheel 4 coaxially fixed to the fixed shaft 3 away from the first sprocket 2 through the side wall of the gripping part 1 by screws.

[0026] A second sprocket 5 is rotatably fitted on the inner wall of the grip part 1. A chain is tensioned between the second sprocket 5 and the first sprocket 2. A friction wheel 6 is coaxially fixed to the second sprocket 5 by screws.

[0027] The bottom end of the gripping part 1 is integrally formed with a retaining ring 7. The retaining ring 7 has an annular groove, and an annular pin 8 is slidably fitted in the annular groove. The friction wheel 6 and the annular pin 8 are in rolling contact.

[0028] An anti-slip sleeve is fitted on the outer side wall of the grip part 1. The anti-slip sleeve is made of rubber material. The tooth ratio of the first sprocket 2 and the second sprocket 5 is that the number of teeth of the first sprocket 2 is less than the number of teeth of the second sprocket 5.

[0029] The gripping part 1 is equipped with a thread winding wheel 9 for storing the sewing thread.

[0030] The specific implementation process is as follows:

[0031] The operator holds the grip part 1, inserts the retaining ring 7 into the tissue and skin at the site to be sutured, and rotates the handwheel 4, which drives the first sprocket 2, which in turn drives the second sprocket 5, which in turn drives the friction wheel 6, causing the circular needle 8 to rotate and pass through the tissue to complete one suture. The suture is finally tightened and secured with a clip. The rubber anti-slip sleeve on the outer part of the grip part 1 has good anti-slip properties, increasing the friction between the operator's hand and the grip part 1, preventing the grip part 1 from slipping due to sweaty hands or other reasons during surgery, thus improving the stability and safety of the operation.

[0032] The gear ratio setting, where the number of teeth on the first sprocket 2 is less than that on the second sprocket 5, enables speed reduction transmission. During operation, the operator rotates the handwheel 4 with a relatively large amplitude, while the rotation amplitude of the second sprocket 5 and the friction wheel 6 is relatively small. This makes the rotation speed of the circular needle 8 easier to control, allowing for more precise suturing and avoiding unnecessary tissue damage caused by excessive rotation.

[0033] The winding wheel 9 can neatly store sutures, preventing them from scattering, knotting, or tangling during surgery, thus reducing the likelihood of suture tangles affecting surgical procedures. When sutures are needed, the operator can easily extract the required length by rotating the winding wheel, facilitating control over suture usage and preventing waste.

[0034] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. An endoscopic suturing device, characterized in that, It includes a grip (1), a first sprocket (2) is rotatably fitted on the inner side wall of the grip (1), a fixed shaft (3) is coaxially fixedly connected to the first sprocket (2), and a handwheel (4) is coaxially fixedly connected to the end of the fixed shaft (3) away from the first sprocket (2). A second sprocket (5) is rotatably fitted on the inner wall of the grip (1). A chain is tensioned between the second sprocket (5) and the first sprocket (2). A friction wheel (6) is coaxially fixedly connected to the second sprocket (5). The bottom end of the gripping part (1) is fixedly connected to a retaining ring (7), and an annular groove is opened inside the retaining ring (7). An annular needle (8) is slidably fitted inside the annular groove, and the friction wheel (6) and the annular needle (8) are in rolling contact.

2. The endoscopic suture device according to claim 1, characterized in that, An anti-slip sleeve is fitted on the outer side wall of the grip part (1), and the anti-slip sleeve is made of rubber material.

3. The endoscopic suture device according to claim 2, characterized in that, The ratio of the number of teeth of the first sprocket (2) to the number of teeth of the second sprocket (5) is such that the number of teeth of the first sprocket (2) is less than the number of teeth of the second sprocket (5).

4. The endoscopic suturing device according to claim 3, characterized in that, The gripping part (1) is equipped with a thread winder (9) for storing the sewing thread.

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