A disposable endoscopic wound suturing device

Abstract

The present invention belongs to the technical field of endoscopic surgical instruments, and specifically relates to a disposable endoscopic wound suturing device, comprising a closure instrument housing and a tissue retractor. A gastroscope is embedded and fixedly installed inside the closure instrument housing, and an edge of the closure instrument housing is integrally provided with an instrument channel 1 and an instrument channel 2. The shaft portion of the tissue retractor movably passes through the instrument channel 2, and the tissue retractor is used in conjunction with the closure instrument housing and is used to pull the inner wall of the tissue close to the lens of the gastroscope. The tissue retractor is mainly composed of an inner needle rod, an inner tube rod, and an outer tube rod. The inner wall of one end of the handle is provided with a spiral guide groove. The present invention can be pulled by clamping the inner wall of the tissue, which can reduce the situation where the inner wall of the tissue is accidentally detached during pulling. The structure is simple to operate and has a small damage range. It can also ensure that the spiral chuck penetrates the inner wall of the tissue in a rotating manner, making it easier for the spiral chuck to pierce the tissue and enter.

Description

Technical Field

[0001] The invention belongs to the technical field of endoscopic surgical instruments, and particularly relates to a disposable endoscopic wound suturing device. Background Art

[0002] An endoscopic wound stapler is a medical device used for tissue resection, transection, and anastomosis during endoscopic surgery. It is suitable for a variety of surgeries, including endoscopic surgeries in abdominal surgery, gynecology, pediatrics, and thoracic surgery. The main function of this stapler is to complete tissue resection, transection, and anastomosis in a one-time operation, reducing operation time and trauma, and helping patients recover quickly.

[0003] Problems with existing technologies:

[0004] Existing endoscopic wound suture devices, such as the Apollo OverStitch SX endoscopic suture device, mostly use a spring-shaped spiral chuck to pull the tissue close to the lens when suturing tissue wounds in the human body. In the process of pulling the tissue with this structure, the spiral chuck is very likely to accidentally detach from the tissue due to the small pulling force surface and the presence of greater or lesser damage to the tissue near the wound, which seriously affects the progress of the operation. In addition, the spiral chuck that accidentally detaches from the tissue is likely to tear off a part of the tissue, thereby expanding the area of tissue damage. Summary of the Invention

[0005] The purpose of the present invention is to provide a disposable endoscopic wound suturing device, which can pull by clamping the inner wall of the tissue, thereby reducing the possibility of the inner wall of the tissue accidentally detaching during pulling. The structure is simple to operate and the damage range is small. It can also ensure that the spiral clamp penetrates into the inner wall of the tissue in a rotating manner, making it easier for the spiral clamp to pierce the tissue and enter.

[0006] The technical solutions adopted by the present invention are as follows:

[0007] A disposable endoscopic wound suturing device comprises a closure device housing and a tissue retractor. A gastroscope is embedded and fixedly mounted within the closure device housing. A first instrument channel and a second instrument channel are integrally formed on the edge of the closure device housing. The shaft of the tissue retractor movably extends through the second instrument channel. The tissue retractor is used in conjunction with the closure device housing to pull the inner wall of tissue close to the lens of the gastroscope.

[0008] By rotating the screw tube, the tissue clamp 1 is first vertically erected, and then the tissue clamp 2 is vertically erected, and finally the tissue clamp 1 is moved closer to the tissue clamp 2 and clamps the inner wall of the tissue;

[0009] By continuously pressing the tube, the spiral chuck is rotated to penetrate into the inner wall of the tissue.

[0010] A camera and an LED light are embedded in the lens of the gastroscope;

[0011] The closing instrument housing is integrally provided with a groove body at the lens end, and a connecting arm is rotatably installed inside the groove body, and a needle body is fixedly installed at the end of the connecting arm away from the transfer point, and the needle body is controlled to rotate by the instrument handle at the tail end of the closing instrument housing, and an anchor holder catheter is assembled with a through-type sliding inside the instrument channel one, and an anchor holder is provided at the tail end of the anchor holder catheter, and an anchor head is detachably clamped to the end of the anchor holder catheter close to the lens, and the anchor head is detachably clamped to the end of the needle body.

[0012] The tissue tractor is mainly composed of an inner needle rod, an inner tube rod and an outer tube rod. The inner tube rod is rotatably sleeved on the outer surface of the inner needle rod, and the outer tube rod is movably sleeved on the outer surface of the inner tube rod. The inner needle rod extends out of the inner tube rod and is fixedly provided with a spiral chuck at one end close to the lens. The inner tube rod extends out of the outer tube rod and is integrally provided with a handle at one end away from the lens.

[0013] The outer tube rod is integrally provided with a tube end at one end close to the lens, and the inner tube rod is movably sleeved with a movable tube at one end close to the tube end, and a spring is connected between the tube end and the movable tube. The outer wall of the movable tube is symmetrically assembled with a tissue clamp. The outer walls on both sides of one end of the tube are integrally provided with a support body for supporting the tissue clamp. The side walls of the support body are fixedly connected with a connecting rod, and the end of the connecting rod is rotatably connected to a rotating arm, and the end of the rotating arm is connected to the outer wall of the tissue clamp.

[0014] The inner tube rod is provided with a movable sleeve on one end near the spiral chuck, and a spring 2 is connected between the movable tube 2 and the movable tube 1. The elastic coefficient of the spring 2 is greater than the elastic coefficient of the spring 1. Push blocks are integrally provided on both sides of the movable tube 2 near one end of the spiral chuck.

[0015] The inner tube rod is integrally provided with a block body on both sides near the end of the spiral chuck, and the side walls of the block body facing away from the spiral chuck are rotatably connected to the rotation support plate, and the end of the rotation support plate is rotatably connected to the tissue clamp 2, and the push block is against the transfer end of the rotation support plate and the tissue clamp 2, and the tissue clamp 2 is integrally provided with an extension body at one end near the transfer point, and the outer wall of the extension body is fixedly provided with a guide rod, and guide groove plates are fixedly provided on both sides of the block body, and the guide rod slides through the oblique groove on the corresponding side of the guide groove plate.

[0016] The second tissue clamp is integrally provided with a thin plate at one end near the transition point, and side grooves are provided on both sides of the edge of the blocking body for the thin plate to be reset and retracted. The thickness of the extension body is greater than the thickness of the thin plate, and the thickness of the thin plate is equal to the width of the side groove.

[0017] When the first live tube penetrates into the limit position inside the tube end, the first tissue clamp is perpendicular to the inner tube rod; when the second live tube moves toward the spiral clamp to the limit position, the second tissue clamp is in contact with the side wall of the block body and is perpendicular to the inner tube rod.

[0018] A threaded section is provided on the outer surface of the inner tube rod near one end of the handle, and a screw tube is rotatably connected to one end of the outer tube rod near the threaded section, and the screw tube is screwed to the outer surface of the threaded section.

[0019] The outer wall of the inner needle rod located in the inner part of the handle is integrally provided with a straight strip body, the internal telescopic assembly of one end of the handle is provided with a transfer tube, the inner wall of one end of the handle is provided with a spiral guide groove, the outer wall of one end of the transfer tube is integrally provided with a ball protrusion, and the ball protrusion and the spiral guide groove form a threaded connection, the internal movably assembled with a core tube at one end of the transfer tube, and both ends of the core tube are provided with one-way bearings located inside the transfer tube, the inner wall of the core tube is provided with a straight through groove for forming a sliding assembly relationship with the straight strip body, the other end of the transfer tube is rotatably assembled with a press tube, and a protective film is connected between the inner wall of the press tube and the outer wall of the handle, and a spring three is provided on the surface of the press tube shaft body and inside the protective film.

[0020] The technical effects achieved by the present invention are:

[0021] The present invention realizes vertical erection of tissue clamp one and vertical erection of tissue clamp two by rotating the spiral tube, and finally brings tissue clamp one close to tissue clamp two and clamps the inner wall of tissue. At this time, the work of pulling the inner wall of tissue can be carried out. Compared with the traditional method of only using the spiral clamp to pull the inner wall of tissue, this structure can reduce the situation that the inner wall of tissue is accidentally separated during pulling, and avoids the situation that the spiral clamp is accidentally damaged when it is separated from the inner wall of tissue, thereby ensuring the normal progress of suturing operation. Moreover, the clamping and moving process is simple to operate and the process is simple. In addition, the tissue clamp two located on the inner side of the tissue has a needle-penetrating effect in the direction of its rotation and erection, which can penetrate as deep as possible into the inner wall of tissue with low degree of tissue damage.

[0022] The present invention allows the spiral chuck to penetrate the inner wall of the tissue in a rotating manner by continuously pressing the pressing tube while holding the handle and moving it deeper, making it easier for the spiral chuck to penetrate the tissue and enter. This operation is simple and convenient and can be completed with one hand. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a main structural diagram of the end portion of the wound suture device provided by an embodiment of the present invention;

[0024] Figure 2 1 is a rear structural diagram of the end portion of the wound suture device provided by an embodiment of the present invention;

[0025] Figure 3is a structural diagram of a tissue retractor provided by an embodiment of the present invention;

[0026] Figure 4 2. It is a schematic diagram of the front and back changes of the end of the tissue retractor provided by an embodiment of the present invention;

[0027] Figure 5 is a planar cross-sectional view of the tissue retractor tip provided by an embodiment of the present invention;

[0028] Figure 6 is a partial cross-sectional view of the tissue retractor tip provided by an embodiment of the present invention;

[0029] Figure 7 yes Figure 6 A local enlarged structural diagram at point A in the middle;

[0030] Figure 8 yes Figure 6 A local enlarged structural diagram at point B in the middle;

[0031] Figure 9 is a schematic diagram of a modified end of a tissue retractor provided by an embodiment of the present invention;

[0032] Figure 10 yes Figure 9 A partial enlarged structural diagram at point C in the middle;

[0033] Figure 11 is a cross-sectional structural diagram of a handle provided by an embodiment of the present invention;

[0034] Figure 12 yes Figure 11 A local enlarged structural diagram at point D in the middle.

[0035] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0036] 1. Gastroscope; 101. Camera; 102. LED light; 2. Closed instrument housing; 201. Trough; 202. Instrument channel 1; 203. Instrument channel 2; 204. Connecting arm; 205. Needle body; 206. Anchor head; 3. Tissue retractor; 301. Inner needle rod; 302. Inner tube rod; 303. Outer tube rod; 304. Screw chuck; 305. Tube end; 306. Support body; 307. Live tube 1; 308. Tissue clamp 1; 309. Spring 1; 310. Connecting rod; 311. Rotating arm ; 312. Flexible tube 2; 313. Spring 2; 314. Push block; 315. Block body; 3151. Side groove; 316. Rotating support plate; 317. Tissue clamp 2; 3171. Extension body; 3172. Guide rod; 3173. Thin plate; 318. Guide groove plate; 319. Handle; 320. Screw tube; 321. Straight strip; 322. Press tube; 323. Protective film; 324. Spring 3; 325. Transfer tube; 326. Core tube; 327. One-way bearing; 328. Spiral guide groove; 329. Ball cam. DETAILED DESCRIPTION

[0037] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is described in detail below with reference to the following examples. It should be understood that the following text is only used to describe one or more specific embodiments of the present invention and does not strictly limit the scope of protection of the present invention.

[0038] like Figures 1-12 As shown, a disposable endoscopic wound suturing device includes a closing instrument shell 2 and a tissue retractor 3. A gastroscope 1 is embedded and fixedly installed inside the closing instrument shell 2. An instrument channel 1 202 and an instrument channel 2 203 are integrally formed on the edge of the closing instrument shell 2. The shaft portion of the tissue retractor 3 movably passes through the instrument channel 203. The tissue retractor 3 is used in conjunction with the closing instrument shell 2 to pull the inner wall of the tissue close to the lens of the gastroscope 1.

[0039] Refer to the attached Figure 1 A camera 101 and an LED light 102 are embedded in the lens of the gastroscope 1.

[0040] Refer to the attached Figure 1-Figure 2 The closing instrument housing 2 is integrally provided with a slot body 201 at the lens end, and a connecting arm 204 is rotatably installed inside the slot body 201, and a needle body 205 is fixedly installed at the end of the connecting arm 204 away from the transfer point. The needle body 205 is controlled to rotate by the instrument handle at the tail end of the closing instrument housing 2, and an anchor holder catheter is assembled in a through-type sliding manner inside the instrument channel 1 202. The tail end of the anchor holder catheter is provided with an anchor holder, and the end of the anchor holder catheter close to the lens is detachably clamped with an anchor head 206, and the anchor head 206 is detachably clamped to the end of the needle body 205.

[0041] According to the above structure, the needle body 205 is first retracted through the instrument handle, and the instrument is prepared to be placed into the human body. The lens end of the instrument is close to the tissue to be sutured in the human body, and then the anchor holder is pushed forward. The anchor holder catheter carries the anchor head 206 close to the needle head of the needle body 205. The anchor head 206 will eventually get stuck in the needle body 205. Press the button at the tail end of the anchor holder and pull it back about 1 cm to separate the anchor holder catheter from the anchor head 206. Then, open the instrument handle and put the tissue retractor 3 through the instrument channel 203. The inner wall of the tissue is pulled toward the camera 101 through the tissue retractor 3, and the instrument is closed. The handle allows the anchor head 206 and the suture thread to pass through the tissue together, and the anchor holder catheter is pushed forward again until the internal locking mechanism engages and locks the anchor head 206. The anchor holder catheter is then pulled back to separate the anchor head 206 from the needle body 205. The tissue is then loosened through the tissue retractor 3, and finally the instrument handle is opened. At this time, the suture thread will pass through the inner wall of the tissue. Repeat the above operations to complete the suturing work, and finally perform the knotting operation. The camera 101 is used for follow-up shooting, and the LED light 102 is used for lighting. The above process and structure are all existing technologies and will not be elaborated here.

[0042] Example 1:

[0043] Refer to the attached Figure 3 The tissue tractor 3 is mainly composed of an inner needle rod 301, an inner tube rod 302 and an outer tube rod 303. The inner tube rod 302 is rotatably sleeved on the outer surface of the inner needle rod 301, and the outer tube rod 303 is movably sleeved on the outer surface of the inner tube rod 302. The inner needle rod 301 extends from the inner tube rod 302 and is fixedly provided with a spiral chuck 304 at one end close to the lens. The inner tube rod 302 extends from the outer tube rod 303 and is away from the lens and is integrally provided with a handle 319.

[0044] Refer to the attached Figure 4-Figure 7 The outer tube rod 303 is integrally provided with a tube end 305 at one end close to the lens, and the inner tube rod 302 is movably provided with a movable tube 307 at one end close to the tube end 305, and a spring 309 is connected between the tube end 305 and the movable tube 307. The outer wall of the movable tube 307 is symmetrically rotated and assembled with a tissue clamp 308. The outer walls on both sides of one end of the tube end 305 are integrally provided with a support body 306 for supporting the tissue clamp 308. The side walls of the support body 306 are fixedly connected with a connecting rod 310. The end of the connecting rod 310 is rotatably connected to a rotating arm 311, and the end of the rotating arm 311 is connected to the outer wall of the tissue clamp 308.

[0045] Refer to the attached Figure 4-Figure 8A second movable tube 312 is movably provided on one end of the inner tube rod 302 near the spiral chuck 304, and a second spring 313 is connected between the second movable tube 312 and the first movable tube 307. The elastic coefficient of the second spring 313 is greater than the elastic coefficient of the first spring 309. Push blocks 314 are integrally provided on both sides of the second movable tube 312 near the end of the spiral chuck 304.

[0046] Refer to the attached Figure 8-Figure 9 The inner tube rod 302 is integrally provided with a block body 315 on both sides near the end of the spiral chuck 304, and the side walls of the block body 315 facing away from the spiral chuck 304 are rotatably connected to the rotation support plate 316, and the end of the rotation support plate 316 is rotatably connected to the tissue clamp 2 317, and the push block 314 is against the transfer end of the rotation support plate 316 and the tissue clamp 2 317. The tissue clamp 2 317 is integrally provided with an extension body 3171 at one end near the transfer point, and the outer wall of the extension body 3171 is fixedly provided with a guide rod 3172, and a guide groove plate 318 is fixedly provided on both sides of the block body 315, and the guide rod 3172 slides through the oblique groove on the corresponding side of the guide groove plate 318.

[0047] Refer to the attached Figure 8-Figure 9 A thin plate 3173 is integrally provided at one end of the tissue clip 317 near the transition point, and side grooves 3151 are provided on both sides of the edge of the blocking body 315 for the thin plate 3173 to be reset and retracted. The thickness of the extension body 3171 is greater than the thickness of the thin plate 3173, and the thickness of the thin plate 3173 is equal to the width of the side groove 3151.

[0048] Refer to the attached Figure 4 and Figure 9 When the live tube 307 penetrates into the limit position inside the tube end 305, the tissue clamp 1 308 is perpendicular to the inner tube rod 302; when the live tube 2 312 moves toward the spiral chuck 304 to the limit position, the tissue clamp 2 317 is attached to the side wall of the blocking body 315 and is perpendicular to the inner tube rod 302 at the same time.

[0049] Refer to the attached Figure 11 A threaded section is provided on the outer surface of the inner tube rod 302 near the handle 319 , and a screw tube 320 is rotatably connected to the end of the outer tube rod 303 near the threaded section, and the screw tube 320 is screwed to the outer surface of the threaded section.

[0050] According to the above structure, when the inner wall of the tissue is placed between the first tissue clamp 308 and the second tissue clamp 317, the handle 319 is stabilized and the screw tube 320 is rotated. Since the screw tube 320 is threadedly connected to the threaded section on the surface of the inner tube rod 302, the screw tube 320 moves together with the outer tube rod 303.

[0051] Furthermore, because the elastic coefficient of spring 2 313 is greater than that of spring 1 309, the distance between tube end 305 and active tube 1 307 gradually decreases during the movement of outer tube rod 303, and spring 1 309 is simultaneously compressed. When active tube 1 307 penetrates the inner limit position of tube end 305, tissue clamp 1 308 eventually rotates to an angle perpendicular to inner tube rod 302 through the traction of connecting rod 310 and rotating arm 311.

[0052] Furthermore, as the outer rod 303 continues to move, the second spring 313 is compressed, and the second live tube 312 will push the rotating support plate 316 and the second tissue clamp 317 to rotate through the push block 314. When the second live tube 312 moves to the limit position, the rotating support plate 316 will fit the side wall of the block body 315. Since the guide rod 3172 passes through the inclined groove of the guide plate 318, the second tissue clamp 317 will also fit the side wall of the block body 315 according to the direction of the inclined groove and finally rotate to an angle perpendicular to the inner rod 302. At this time, the first tissue clamp 308 and the second tissue clamp 317 will be in a parallel state.

[0053] Furthermore, as the outer tube rod 303 continues to move, the distance between the first living tube 307 and the second living tube 312 gradually becomes smaller. At this time, the erected tissue clamp 1 308 and the second tissue clamp 317 will have the effect of clamping the inner wall of the tissue. Finally, the rotation of the screw tube 320 is stopped, and the control handle 319 is pulled backward. At this time, the inner wall of the tissue can be pulled closer to the camera 101, which is convenient for subsequent suturing work. When it is necessary to withdraw the tissue retractor 3, only the screw tube 320 needs to be rotated back. The tissue clamp 1 308 and the tissue clamp 2 317 will eventually rotate back to their original position, and the tissue retractor 3 can be withdrawn.

[0054] In the above process, by rotating the screw tube 320, the tissue clamp 1 308 is vertically erected, and then the tissue clamp 2 317 is vertically erected, and finally the tissue clamp 1 308 is close to the tissue clamp 2 317 and has the effect of clamping the inner wall of the tissue. At this time, the work of pulling the inner wall of the tissue can be carried out. Compared with the traditional method of only using the spiral clamp 304 to pull the inner wall of the tissue, this structure can better reduce the situation where the inner wall of the tissue is accidentally detached during pulling, and at the same time avoid the situation where the spiral clamp 304 is accidentally damaged when it is detached from the inner wall of the tissue, thereby ensuring the normal progress of the suturing operation. The clamping and moving process is simple to operate and the process is simple. In addition, the tissue clamp 2 317 located on the inner side of the tissue, the direction of its rotation and erection makes the tissue clamp 2 317 have a needle-penetrating effect, which can penetrate as deep as possible into the inner wall of the tissue under the premise of low tissue damage.

[0055] The working principle of the present invention is as follows: when the tissue inner wall is pulled toward the camera 101 by the tissue retractor 3, the user holds the handle 319 and inserts the rod into the instrument channel 2 203 until the spiral chuck 304 passes through the tissue inner wall. Figure 5As shown, when the inner wall of the tissue is placed between the first tissue clamp 308 and the second tissue clamp 317, the handle 319 is stabilized and the screw 320 is rotated. Since the screw 320 is threadedly connected to the threaded section on the surface of the inner tube rod 302, the screw 320 moves together with the outer tube rod 303;

[0056] Since the elastic coefficient of the second spring 313 is greater than the elastic coefficient of the first spring 309, the distance between the tube end 305 and the first live tube 307 gradually becomes smaller during the movement of the outer tube rod 303, and the first spring 309 is compressed at the same time. When the first live tube 307 penetrates into the limit position inside the tube end 305, the tissue clamp 1 308 will eventually rotate to an angle perpendicular to the inner tube rod 302 through the traction of the connecting rod 310 and the rotating arm 311; as the outer tube rod 303 continues to move, the second spring 313 is compressed, and the second live tube 312 will push the rotating support plate 316 and the second tissue clamp 317 to rotate through the push block 314. When the second live tube 312 moves to the limit position, the rotating support plate 316 will stick to the inner tube rod 302. The side wall of the blocking body 315 is closed, and since the guide rod 3172 passes through the oblique groove of the guide groove plate 318, according to the direction of the oblique groove, the tissue clamp 2 317 will also fit with the side wall of the blocking body 315 and eventually rotate to an angle perpendicular to the inner tube rod 302. At this time, the tissue clamp 1 308 and the tissue clamp 2 317 will be in a parallel state; as the outer tube rod 303 continues to move, the distance between the live tube 1 307 and the live tube 2 312 gradually becomes smaller. At this time, the erected tissue clamp 1 308 and the tissue clamp 2 317 will have the effect of clamping the inner wall of the tissue. Finally, stop rotating the screw tube 320 and control the handle 319 to pull back. At this time, the inner wall of the tissue can be pulled close to the camera 101, which is convenient for subsequent suturing work.

[0057] Example 2:

[0058] Refer to the attached Figure 11-12 The outer wall of the inner needle rod 301 located inside the handle 319 is integrally provided with a straight strip body 321, and a transfer tube 325 is telescopically assembled inside one end of the handle 319. A spiral guide groove 328 is provided on the inner wall of one end of the handle 319, and a ball protrusion 329 is integrally provided on the outer wall of one end of the transfer tube 325, and the ball protrusion 329 is threadedly connected to the spiral guide groove 328. A core tube 326 is movably assembled inside one end of the transfer tube 325, and one-way bearings 327 are sleeved on both ends of the core tube 326 and located inside the transfer tube 325. A straight through groove is provided on the inner wall of the core tube 326 for forming a sliding assembly relationship with the straight strip body 321. A press tube 322 is rotatably assembled at the other end of the transfer tube 325, and a protective film 323 is connected between the inner wall of the press tube 322 and the outer wall of the handle 319. A spring three 324 is sleeved on the surface of the axial body of the press tube 322 and located inside the protective film 323.

[0059] According to the above structure, in the process of controlling the spiral chuck 304 to pierce the inner wall of the tissue, the user controls the shaft to penetrate deeper while continuously pressing the pressing tube 322 with his thumb. After the pressing tube 322 is pressed and moved, the spring 324 is compressed, and the transfer tube 325 simultaneously penetrates into the interior of the handle 319. Since the ball protrusion 329 and the spiral guide groove 328 form a threaded connection, the transfer tube 325 rotates while penetrating. According to the characteristics of the one-way bearing 327, the core tube 326 rotates accordingly. 6 and the tail end of the inner needle rod 301 will move relative to each other, but the rotating core tube 326 will drive the inner needle rod 301 to rotate together, and the inner needle rod 301 will eventually drive the spiral chuck 304 to rotate together, making it easier for the spiral chuck 304 to penetrate the inner wall of the tissue. In the above process, when holding the handle 319 and moving deeper, by continuously pressing the pressing tube 322, the spiral chuck 304 can be rotated to penetrate the inner wall of the tissue, making it easier for the spiral chuck 304 to penetrate the tissue and enter. This operation is simple and convenient and can be completed with one hand.

[0060] The working principle of the present invention is as follows: in the process of controlling the spiral chuck 304 to penetrate the inner wall of the tissue, the user controls the shaft to penetrate deeper while continuously pressing the pressing tube 322 with his thumb. After the pressing tube 322 is pressed and moved, the spring 324 is compressed, and the transfer tube 325 penetrates into the interior of the handle 319. Since the ball protrusion 329 and the spiral guide groove 328 form a threaded connection, the transfer tube 325 rotates while penetrating. According to the characteristics of the one-way bearing 327, the core tube 326 at this time It will follow the rotation, and relative movement will occur between the core tube 326 and the tail end of the inner needle rod 301, but the rotating core tube 326 will drive the inner needle rod 301 to rotate together, and the inner needle rod 301 will eventually drive the spiral chuck 304 to rotate together, which is convenient for the spiral chuck 304 to penetrate the inner wall of the tissue. When the spring three 324 drives the pressing tube 322 to reset, according to the characteristics of the one-way bearing 327, the core tube 326 will also reset at this time but will not be driven to rotate, ensuring that the spiral chuck 304 only rotates in one direction.

[0061] The foregoing is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art may make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications are also within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained herein shall, unless otherwise specified or limited, be implemented in accordance with conventional means in the art.

Claims

1. A disposable endoscopic wound suturing device, comprising a closing instrument housing (2) and a tissue retractor (3), wherein a gastroscope (1) is embedded and fixedly mounted inside the closing instrument housing (2), and an instrument channel 1 (202) and an instrument channel 2 (203) are integrally formed on the edge of the closing instrument housing (2), characterized in that: The shaft portion of the tissue tractor (3) is movable and passes through the second instrument channel (203), and the tissue tractor (3) is used in conjunction with the closed instrument housing (2) and is used to pull the inner wall of the tissue close to the lens of the gastroscope (1); The tissue tractor (3) is mainly composed of an inner needle rod (301), an inner tube rod (302) and an outer tube rod (303), wherein the inner needle rod (301) extends out of the inner tube rod (302) and is fixedly provided with a spiral chuck (304) at one end close to the lens, and the outer tube rod (303) is integrally provided with a tube end (305) at one end close to the lens, and a movable tube (307) is movably sleeved at one end of the inner tube rod (302) close to the tube end (305), and a spring (309) is connected between the tube end (305) and the movable tube (307), and a tissue clamp (308) is symmetrically rotated and assembled on the outer wall of the movable tube (307); The inner tube rod (302) is provided with a movable sleeve of a second live tube (312) at one end close to the spiral chuck (304), and a second spring (313) is connected between the second live tube (312) and the first live tube (307), the elastic coefficient of the second spring (313) is greater than the elastic coefficient of the first spring (309), and push blocks (314) are integrally provided on both sides of the second live tube (312) close to the end of the spiral chuck (304), and a stopper (315) is integrally provided on both sides of the inner tube rod (302) close to the end of the spiral chuck (304), and the side walls of the stopper (315) facing away from the spiral chuck (304) are rotatably connected to a rotating support plate (316), and the end of the rotating support plate (316) is rotatably connected to the second tissue clamp (317), and the push block (314) abuts against the connecting end of the rotating support plate (316) and the second tissue clamp (317); By rotating the screw tube (320), the tissue clamp 1 (308) is first vertically erected, and then the tissue clamp 2 (317) is vertically erected, and finally the tissue clamp 1 (308) is moved closer to the tissue clamp 2 (317) and clamps the inner wall of the tissue; By continuously pressing the pressing tube (322), the spiral chuck (304) is rotated to penetrate into the inner wall of the tissue.

2. The disposable endoscopic wound suturing device according to claim 1, characterized in that: A camera (101) and an LED light (102) are embedded in the lens of the gastroscope (1); The closing instrument housing (2) is integrally provided with a groove body (201) at the lens end, and a connecting arm (204) is rotatably installed inside the groove body (201), and a needle body (205) is fixedly installed at the end of the connecting arm (204) away from the transfer point, and the needle body (205) is controlled to rotate by the instrument handle at the tail end of the closing instrument housing (2), and an anchor holder catheter is assembled in a through-type sliding manner inside the instrument channel 1 (202), and an anchor holder is provided at the tail end of the anchor holder catheter, and an anchor head (206) is detachably clamped at the end of the anchor holder catheter close to the lens, and the anchor head (206) is detachably clamped to the end of the needle body (205).

3. The disposable endoscopic wound suturing device according to claim 1, characterized in that: The inner tube rod (302) is rotatably sleeved on the outer surface of the inner needle rod (301), and the outer tube rod (303) is movably sleeved on the outer surface of the inner tube rod (302). A handle (319) is integrally provided on one end of the inner tube rod (302) extending out of the outer tube rod (303) and away from the lens.

4. The disposable endoscopic wound suturing device according to claim 3, characterized in that: The outer walls on both sides of one end of the tube end (305) are integrally provided with a support body (306) for supporting the tissue clamp (308), and the side walls of the support body (306) are fixedly connected to a connecting rod (310), and the end of the connecting rod (310) is rotatably connected to a rotating arm (311), and the end of the rotating arm (311) is connected to the outer wall of the tissue clamp (308).

5. The disposable endoscopic wound suturing device according to claim 4, characterized in that: An extension body (3171) is integrally provided at one end of the tissue clamp 2 (317) near the transition point, and a guide rod (3172) is fixedly provided on the outer wall of the extension body (3171). Guide groove plates (318) are fixedly provided on both sides of the blocking body (315), and the guide rod (3172) slides through the inclined groove on one side of the corresponding guide groove plate (318).

6. The disposable endoscopic wound suturing device according to claim 5, characterized in that: A thin plate (3173) is integrally provided at one end of the tissue clamp 2 (317) near the transition point, and side grooves (3151) for resetting and retracting the thin plate (3173) are provided on both sides of the edge of the blocking body (315). The thickness of the extension body (3171) is greater than the thickness of the thin plate (3173), and the thickness of the thin plate (3173) is equal to the width of the side groove (3151).

7. The disposable endoscopic wound suturing device according to claim 6, characterized in that: When the live tube 1 (307) penetrates into the inner limit position of the tube end (305), the tissue clamp 1 (308) is perpendicular to the inner tube rod (302); when the live tube 2 (312) moves toward the spiral clamp (304) to the limit position, the tissue clamp 2 (317) is attached to the side wall of the blocking body (315) and is perpendicular to the inner tube rod (302) at the same time.

8. The disposable endoscopic wound suturing device according to claim 7, characterized in that: A threaded section is provided on the outer surface of the inner tube rod (302) at one end close to the handle (319), and a screw tube (320) is rotatably connected to the end of the outer tube rod (303) close to the threaded section, and the screw tube (320) is screwed to the outer surface of the threaded section.

9. The disposable endoscopic wound suturing device according to claim 8, characterized in that: The outer wall of the inner needle rod (301) located in the inner part of the handle (319) is integrally provided with a straight body (321), and the inner telescopic assembly of one end of the handle (319) is provided with a transfer tube (325), and the inner wall of one end of the handle (319) is provided with a spiral guide groove (328), and the outer wall of one end of the transfer tube (325) is integrally provided with a ball protrusion (329), and the ball protrusion (329) and the spiral guide groove (328) are threadedly connected, and the inner movably assembly of one end of the transfer tube (325) is provided with a core tube (32 6), and one-way bearings (327) are sleeved on both ends of the core tube (326) and located inside the transfer tube (325), and a straight-through groove is opened on the inner wall of the core tube (326) for forming a sliding assembly relationship with the straight bar (321), and the other end of the transfer tube (325) is rotatably assembled with a press tube (322), and a protective film (323) is connected between the inner wall of the press tube (322) and the outer wall of the handle (319), and a spring three (324) is sleeved on the surface of the axial body of the press tube (322) and located inside the protective film (323).

Images