An automatic suturing device

Abstract

The utility model relates to medical instrument technical field, a kind of automatic suturing device, and the inside of suturing device shell is provided with firing assembly, yawing assembly, gun head assembly, needle holding assembly, and firing assembly can drive needle holding assembly to carry out suturing work, needle holding assembly is fixed on gun head assembly, yawing assembly can drive gun head assembly left and right yaw, realize the suturing requirement under different scenes, the utility model structure is simple, convenient to use, and physician learning cost is low, can substantially reduce the use and learning cost of suturing device under the premise of satisfying use requirement.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically an automatic suture device. Background Technology

[0002] In minimally invasive surgery, some obese patients have thicker subcutaneous fat, resulting in small and deep puncture holes, limited field of vision, and large suture arcs, making suturing difficult and preventing precise suturing of the peritoneum and fascia layers. This can easily lead to abdominal wall defects at the puncture site, ultimately resulting in puncture-hole hernias within the abdominal cavity. In open surgery, the tissues requiring suturing are located deeper, and ordinary instruments cannot reach the suturing sites or fix the tissues properly, making suturing difficult. While existing medical suture devices can achieve the suturing purpose, most have complex structures, are prone to mechanical failure during use, and require complex procedures for surgeons, making the assembly and disassembly of parts difficult and hindering surgical execution. Utility Model Content

[0003] The purpose of this invention is to provide an automatic stitcher to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: an automatic suture device, wherein a firing assembly, a tilting assembly, a gun head assembly, and a needle holding assembly are provided inside the suture device housing. The firing assembly includes a firing handle and a firing rod. The lower end of the firing handle located inside the suture device housing is fixedly connected to a handle return spring, and the other end of the handle return spring is fixedly connected to the suture device housing. The firing handle and the end of the firing rod are connected inside the suture device housing by a connecting rod. The end of the firing rod is fixedly connected to a firing spring, which is located in a preset groove inside the suture device housing. A push plate is provided at the front end of the firing rod, and the push plate is slidably connected to the gun head assembly. The push plate is used to drive the needle holding assembly to complete the suture work. The tilting assembly can drive the front end of the gun head assembly to tilt left and right. The needle holding assembly is detachably provided on the gun head assembly.

[0005] Furthermore, the oscillation assembly includes a top cover, a bottom cover, a knob, and control levers. The top cover and bottom cover are located at the front end of the suture housing. A knob is located on the top of the top cover, and a groove is located at the bottom of the knob. A protrusion that cooperates with the knob is located on the inner wall of the opening at the top of the top cover, allowing the knob to rotate around the center of the opening inside the opening. A knob gear is located at the lower end of the knob. Two control levers are symmetrical about the center line of the suture housing and are lower than the firing lever in vertical height. A knob tooth is located at the end of each of the two control levers, and the two knob teeth are located on both sides of the knob gear. The front ends of the two control levers are connected to the gun head assembly. A needle holding assembly is detachably mounted on the gun head assembly.

[0006] Furthermore, the firing lever and the two control levers pass through the stabilizer respectively. The stabilizer is clamped between the upper and lower covers of the rotating head and the opening at its front end, with the front end of the stabilizer protruding from the opening and the end located in the space formed by the upper and lower covers of the rotating head.

[0007] Furthermore, the automatic suture device also includes a gun head assembly, which is located at the front end of the firing lever and two control levers. The gun head assembly includes a fixed base, a gun head jaw, and a pressure plate. The front end of the fixed base is rotatably connected to the gun head jaw, and the gun head jaw and the pressure plate are openable and closable. The two ends of the gun head jaw are respectively connected to the front ends of the two control levers. The firing lever passes through the fixed base and the gun head jaw and is fixedly connected to the push plate. The gun head jaw is provided with a groove, and the push plate is located inside the groove of the gun head jaw and is slidably connected to the gun head jaw.

[0008] Furthermore, the pusher also includes a pusher rack, a pusher gear, and an elastic connecting part. The needle holding assembly includes a fixed plate, a gear turntable, a pusher connecting piece, a suture needle, and a lower cover. The front end of the firing lever is provided with a pusher rack, which meshes with the pusher gear. The pusher rack and the firing lever are connected by an elastic connecting part. A lower cover is provided below the fixed plate, and a pusher connecting piece is provided below the fixed plate and above the lower cover. The pusher connecting piece has an opening in the middle, which cooperates with a limiting device provided below the fixed plate to fix the needle. A lower limit groove is provided at the front end of the lower surface of the plate, and the front end of the push needle connecting piece is restricted to move within the limit groove. A gear turntable is provided at the rear of the fixed plate, and a slot is provided at the lower end of the gear turntable to mesh with the push piece gear. A groove is provided on the gear turntable, and the end of the push needle connecting piece protrudes and is locked in this groove. An upper limit groove is provided on the upper surface of the fixed plate, and the suture needle is restricted to move within this groove. A locking block is provided at the front end of the push needle connecting piece. The suture needle is arc-shaped, and its two ends are respectively provided with locking grooves corresponding to the protrusions.

[0009] Furthermore, the needle holding assembly also includes a top cover, which is located above the front end of the fixing plate.

[0010] Furthermore, the needle holding assembly also includes a protective sleeve that can be fitted onto the front end of the fixing plate, the lower cover, and the upper cover.

[0011] Compared with the prior art, this utility model has the following advantages: (1) This utility model can achieve left and right swaying of the sewing gun head through the swaying component. Compared with the prior art, the structure is simpler. The swaying of the gun head can be achieved by the relative displacement of the front and back of two control rods. The control rods are connected to the toggle teeth, which are meshed with the toggle gear. The two toggle teeth are set on both sides of the toggle gear. The two control rods can be moved back and forth relative to each other by rotating the toggle gear, thereby driving the gun head to sway to one side and achieve the purpose of turning.

[0012] (2) The needle holding assembly of this utility model uses plastic as the main structure and simplifies its structure. It consists of only a fixing plate, gear turntable, needle pusher connecting piece, suture needle, lower cover, upper cover and protective sleeve. The lower cover, upper cover and protective sleeve are structures to strengthen the main body. The main mechanical structure is completed by the other parts. Therefore, it is inexpensive and can be used only once, completely eliminating the risk of cross-infection.

[0013] (3) By changing the structure of the gun head assembly, the gun head assembly clamps the needle holding assembly, thus further reducing the number of parts on the needle holding assembly and making its manufacturing cost lower. This design does not increase the overall manufacturing cost of the gun head assembly. Therefore, changing the clamping structure of the gun head assembly also reduces the overall manufacturing and use cost of the suture device. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the firing assembly structure.

[0015] Figure 2 This is an enlarged schematic diagram of the firing assembly A.

[0016] Figure 3 This is an enlarged schematic diagram of the firing component B.

[0017] Figure 4 This is a schematic diagram of the firing assembly structure.

[0018] Figure 5 This is a partial schematic diagram of the oscillating component.

[0019] Figure 6 This is a schematic diagram showing a partial disassembly of the oscillation component.

[0020] Figure 7 This is a schematic diagram of the oscillating component.

[0021] Figure 8 This is a partial schematic diagram of the front end of the oscillating component.

[0022] Figure 9 This is a front view of the gun head assembly and the needle holding assembly.

[0023] Figure 10 This is a schematic diagram of the back of the gun head assembly and the needle holding assembly.

[0024] Figure 11 This is a schematic diagram of the needle-holding assembly.

[0025] Figure 12 A front view of the disassembled needle holder assembly.

[0026] Figure 13 This is a diagram showing the back of the disassembled needle holder assembly.

[0027] Figure 14This is the schematic diagram of the internal driving structure of the needle holding assembly.

[0028] Figure 15 This is a schematic diagram of the driving structure for the needle holding assembly and the firing assembly.

[0029] The components include a firing assembly 100, a firing handle 110, a handle return spring 111, a firing lever 120, a firing spring 121, a pusher plate 122, a pusher plate rack 1221, a pusher plate gear 1222, and an elastic connecting part 1223. Oscillating assembly 200, top cover 210, toggle switch 220, toggle switch gear 221, toggle switch tooth 222, control lever 230. Gun head assembly 300, mounting base 310, gun head lower jaw 311, pressure plate 312. Needle holding assembly 400, fixing plate 410, gear turntable 411, needle pusher connecting piece 412, suture needle 413, lower cover 420, upper cover 430, protective cover 440. Detailed Implementation

[0030] The purpose of this utility model is to address the shortcomings of existing technologies by providing an automatic stitching device, specifically achieved through the following technical solution: Reference Figures 1-10 This embodiment provides an automatic suture device, comprising: a suture device housing, characterized in that a firing assembly 100, a tilting assembly 200, a gun head assembly 300, and a needle holding assembly 400 are disposed inside the suture device housing, wherein the firing assembly 100 includes a firing handle 110 and a firing rod 120, wherein a handle return spring 111 is fixedly connected to the lower end of the portion of the firing handle 110 disposed inside the suture device housing, and the other end of the handle return spring 111 is fixedly connected to a reserved snap-fit ​​component inside the suture device housing, and the ends of the firing handle 110 and the firing rod 120 are connected at the suture... The internal structure of the sewing device housing is connected by a connecting rod. The firing rod 120 is fixedly connected to a firing spring 121 at its end. The firing spring 121 is set in a preset groove inside the sewing device housing. Pressing the firing handle 110 will pull the connecting rod downward and press down the handle return spring 111. The connecting rod pulls the firing spring 121 to move backward, which in turn pulls the firing rod 120 to move backward. After releasing the firing handle 110, the handle return spring 111 returns to its original position, pushing the firing handle 110 back to its initial position. The firing spring 121 also drives the firing rod 120 back to its initial position.

[0031] Reference Figure 2 The firing lever 120 has a pusher 122 at its front end. The pusher 122 is slidably connected to the gun head assembly 300. The pusher 122 is used to drive the needle holding assembly 400 to complete the suturing work.

[0032] Reference Figures 5-8The oscillation assembly 200 includes a top rotating cover 210, a bottom rotating cover, a toggle switch 220, and a control lever 230. The top rotating cover 210 and the bottom rotating cover are located at the front end of the stitcher housing, forming the front end of the main body of the stitcher gun. A toggle switch 220 is located on the top of the rotating head cover 210. A groove is located at the bottom of the toggle switch 220. A corresponding protrusion is located on the inner wall of the opening at the top of the rotating head cover 210, allowing the toggle switch 220 to rotate within the opening and around its center. A toggle gear 221 is located at the lower end of the toggle switch 220. Two control levers 230 are symmetrically positioned along the center line of the sewing machine housing and are vertically lower than the firing lever 120. Each of the two control levers 230 has a toggle tooth 222 at its end. The gear teeth 222 are respectively disposed on both sides of the toggle gear 221. The front ends of the two control levers 230 are respectively connected to the gun head assembly 300. Rotating the toggle 220 can drive the toggle gear 221 to rotate, thereby driving the two toggle teeth 222 disposed on both sides of the toggle gear 221 to move back and forth relative to the toggle gear 221, thereby driving the control levers 230 connected to the toggle teeth 222 to move back and forth, thereby causing the gun head assembly 300 to swing left and right. The needle holding assembly 400 is detachably disposed on the gun head assembly 300.

[0033] Reference Figure 2 , Figure 3 , Figure 4 , Figure 5 The firing lever 120 and the two control levers 230 pass through the stabilizer. The stabilizer is clamped between the upper and lower covers of the rotating head 210 and the lower cover of the rotating head at its front opening. The front end of the stabilizer protrudes from the opening, and the end is located in the space formed by the upper and lower covers of the rotating head. The stabilizer can make the ends of the firing lever 120 and the two control levers 230 more stable and restrict their movement trajectory, thus ensuring the stable operation of the suture device.

[0034] Reference Figure 9 , Figure 10 The automatic suture device also includes a gun head assembly 100, which is located at the front end of the firing rod 120 and two control rods 230. The gun head assembly 100 includes a fixed base 310, a gun head jaw 311, and a pressure plate 312. The front end of the fixed base 310 is rotatably connected to the gun head jaw 311, and the gun head jaw 311 is openably connected to the pressure plate 312. The two ends of the gun head jaw 311 are respectively connected to the front ends of the two control rods 230, which control the left and right sway of the gun head jaw 311 around the fixed base 310. The firing rod 120 passes through the fixed base 310 and the gun head jaw 311 and is fixedly connected to a pusher plate 122. The gun head jaw 311 has a groove, and the pusher plate 122 is located inside the groove of the gun head jaw 311 and is slidably connected to the gun head jaw 311. (See reference...) Figure 2The pusher 122 also includes a pusher rack 1221, a pusher gear 1222, and an elastic connecting part 1223.

[0035] Reference Figures 11-15 The needle holding assembly 400 includes a fixing plate 410, a gear turntable 411, a needle pusher connecting piece 412, a suture needle 413, and a lower cover 420. The firing rod 120 has a pusher rack 1221 at its front end, which is meshed with a pusher gear 1222. Driven by the firing rod 120, the pusher rack 1221 moves back and forth. The pusher rack 1221 and the firing rod 120 are connected by an elastic connecting part 1223. The firing rod 120 drives the pusher rack 1221 to slide in the groove of the gun head jaw 311 through the elastic connecting part 1223, thereby driving the pusher gear 1222, which is meshed with the pusher rack 1221, to make a circular motion. When the gun head jaw 311 swings left and right around the fixing seat 310, the elastic connecting part 1223 can follow the left and right swing of the gun head jaw 311. Because it has a certain elasticity, it will not hinder the left and right swing of the gun head jaw 311. A lower cover 420 is provided below the fixed plate 410. A push pin connecting piece 412 is provided below the fixed plate 410 and above the lower cover 420. The push pin connecting piece 412 has an opening in its center, which cooperates with a limiting device provided below the fixed plate 410 to restrict the movement trajectory of the push pin connecting piece 412. A lower limiting groove is provided at the front end of the lower surface of the fixed plate 410, restricting the front end of the push pin connecting piece 412 to move within the limiting groove, further ensuring the stability of the push pin connecting piece 412's operation and preventing the push pin from jamming. A gear turntable 411 is provided at the rear of the fixed plate 410. A slot is provided at the lower end of the gear turntable 411, meshing with a push pin gear 1222. The rotation of the push pin gear 1222 drives the gear turntable 411 to rotate. A groove is provided on the gear turntable 411, and the end of the push pin connecting piece 412 protrudes and is engaged in this groove. The rotation of the gear turntable 411 drives the push pin connecting piece 412 to rotate. The needle connecting piece 412 moves according to the design rules. The upper surface of the fixing plate 410 is provided with an upper limit groove, which restricts the movement of the suture needle 413. The front end of the push needle connecting piece 412 is provided with a locking block. The suture needle 413 is arc-shaped, and its two ends are respectively provided with locking grooves corresponding to the protrusions. The push needle connecting piece 412 reciprocates under the drive of the gear turntable 411. When the locking block at the front end touches the locking groove on the suture needle 413, it will push the suture needle 413 to move in its limiting groove. That is, after the locking block hits the locking groove at the tail of the suture needle 413, the suture needle 413 is pushed out. At this time, the push needle connecting piece 412 resets. At this time, the locking block of the push needle connecting piece 412 engages with the locking groove at the head of the suture needle 413. Then, by driving the push needle connecting piece 412 again, the suture needle 413 can be pushed back to its initial position, and one sew is completed. Subsequent sewing uses this mode.

[0036] Reference Figure 13 , Figure 14The needle holding assembly 400 also includes an upper cover 430, which is provided above the front end of the fixing plate 410, and a protective sleeve 4430. The protective sleeve 4430 can be fitted onto the front end of the fixing plate 410, the lower cover 420, and the upper cover 430 to better protect the needle holding assembly 400 and increase its structural strength.

Claims

1. An automatic suture device, comprising: The suture device housing is characterized in that it contains a firing assembly (100), a skew assembly (200), a gun head assembly (300), and a needle holding assembly (400). The firing assembly (100) includes a firing handle (110) and a firing lever (120). The lower end of the firing handle (110) located inside the suture housing is fixedly connected to a handle return spring (111). The other end of the handle return spring (111) is fixedly connected to the suture housing. The firing handle (110) and the end of the firing rod (120) are connected inside the suture housing by a connecting rod. The end of the firing rod (120) is fixedly connected to a firing spring (121), which is located in a pre-set groove inside the suture housing. A pusher (122) is provided at the front end of the firing rod (120). The pusher (122) is slidably connected to the gun head assembly (300) and is used to drive the needle holding assembly (400) to complete the suturing work. The oscillation assembly (200) can drive the front end of the gun head assembly (300) to oscillate left and right. The gun head assembly (300) is detachably provided with a needle holding assembly (400).

2. An automatic suture device according to claim 1, characterized in that, The yaw assembly (200) includes a top cover (210), a bottom cover, a toggle switch (220), and a control lever (230). The rotating head cover (210) and rotating head lower cover are located at the front end of the suture housing. The top of the rotating head cover (210) is provided with a knob (220), and the bottom of the knob (220) is provided with a sliding groove. The inner wall of the top opening of the rotating head cover (210) is provided with a protrusion that cooperates with it, so that the knob (220) can rotate on its own along the center of the opening inside the top opening of the rotating head cover (210). The lower end of the knob (220) is provided with a knob gear (221). Two control rods (230) are symmetrical about the center line of the suture housing and are lower than the firing rod (120) in vertical height. The ends of the two control rods (230) are respectively provided with a knob tooth (222). The two knob teeth (222) are respectively located on both sides of the knob gear (221). The front ends of the two control rods (230) are respectively connected to the gun head assembly (300). The gun head assembly (300) is detachably provided with a needle holding assembly (400).

3. An automatic suture device according to claim 2, characterized in that, The firing lever (120) and the two control levers (230) pass through the stabilizer respectively. The stabilizer is clamped between the upper and lower covers of the rotating head (210) and the lower cover of the rotating head at its front opening. The front end of the stabilizer protrudes from the opening, and the end is located in the space formed by the upper and lower covers of the rotating head (210) and the lower cover of the rotating head.

4. An automatic suture device according to claim 2, characterized in that, The automatic stitcher also includes a head assembly (300), wherein, The gun head assembly (300) is located at the front end of the firing lever (120) and two control levers (230). The gun head assembly (300) includes a mounting base (310), a gun head lower jaw (311), and a pressure plate (312). The front end of the fixed base (310) is rotatably connected to the lower jaw of the gun head (311). The lower jaw of the gun head (311) is openable and closeable connected to the pressure plate (312). The two ends of the lower jaw of the gun head (311) are respectively connected to the front ends of two control rods (230). The firing rod (120) passes through the fixed base (310), the lower jaw of the gun head (311) and the push plate (122) and is fixedly connected. The lower jaw of the gun head (311) is provided with a groove. The push plate (122) is set inside the groove of the lower jaw of the gun head (311) and is slidably connected to the lower jaw of the gun head (311).

5. An automatic suture device according to claim 4, characterized in that, The pusher (122) also includes a pusher rack (1221), a pusher gear (1222), and an elastic connecting part (1223). The needle holding assembly (400) includes a fixing plate (410), a gear turntable (411), a needle pusher connecting piece (412), a suture needle (413), and a lower cover (420), wherein The firing lever (120) has a pusher rack (1221) at its front end, which is meshed with a pusher gear (1222). The pusher rack (1221) and the firing lever (120) are connected by an elastic connecting part (1223). A lower cover (420) is provided below the fixing plate (410). A push pin connecting piece (412) is provided below the fixing plate (410) and above the lower cover (420). An opening is provided in the middle of the push pin connecting piece (412) to cooperate with the limiting device provided below the fixing plate (410). A lower limiting groove is provided at the front end of the lower surface of the fixing plate (410). The front end of the push pin connecting piece (412) is restricted to move within the limiting groove. A gear turntable is provided at the rear of the fixing plate (410). 411), the lower end of the gear turntable (411) is provided with a slot, which meshes with the push plate gear (1222). The gear turntable (411) is provided with a groove, the end of the push needle connecting piece (412) protrudes and is locked in this groove. The upper surface of the fixing plate (410) is provided with an upper limit groove, and the suture needle is restricted to move in this groove. The front end of the push needle connecting piece (412) is provided with a locking block. The suture needle (413) is arc-shaped, and its two ends are respectively provided with locking grooves corresponding to the protrusions.

6. An automatic suture device according to claim 5, characterized in that, The needle holder assembly (400) also includes a top cover (430), which is located above the front end of the fixing plate (410).

7. An automatic suture device according to claim 5 or 6, characterized in that, The needle holder assembly (400) also includes a protective sleeve (4430) which can be fitted onto the front end of the fixing plate (410), the lower cover (420), and the upper cover (430).

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