Sequential clip applier

Abstract

The present disclosure provides a continuous clip applicator, comprising: a grip portion; a driving mechanism installed within the grip portion; a coupling portion that reciprocates linearly under the drive of the driving mechanism; a connecting tube, the rear end of the connecting tube being installed on the grip portion; a clamping head portion including: pliers, comprising two clamping arms that are cross - arranged and pivotally installed at the front end of the connecting tube, the coupling portion being connected to the rear ends of the two clamping arms, each clamping arm including a clamping portion adapted to clamp a first clip; a clip magazine portion configured to extend from the outside of the connecting tube to the inside of the connecting tube through the space defined by the pliers, a plurality of second clips being movably accommodated in sequence in an accommodation channel defined by the clip magazine portion; a clip pushing mechanism configured to push the second clips sequentially towards the clamping portion under the drive of the coupling portion, the clip pushing mechanism including a separator inserted between two adjacent second clips and configured to push the front - located one of the two second clips towards the clamping portion.

Description

Technical Field

[0001] At least one embodiment of the present disclosure relates to a clip applicator, and more particularly to a continuous-fire clip applicator that can continuously send and hold multiple clips. Background Art

[0002] A clip applicator is a commonly used surgical instrument for performing a clamping operation on a ligation clip (Hemolok clip (Teleflex ligation)) during a surgical operation to clamp a blood vessel and stop bleeding. In a medical operation, especially in minimally invasive techniques, when a patient is bleeding, after taking a hemostatic drug, the clip applicator is used to clamp the large blood vessel to prevent blood from flowing out. However, most of the clip applicators in the prior art are single-shot clip applicators, that is, after each clamping operation, a ligation clip needs to be reinstalled at the clamp head, which results in low surgical efficiency.

[0003] A continuous-fire clip applicator includes a push handle, a tube rod, and a clamp head installed at the front end of the tube rod, and further includes a push rod driven by the push handle, a feeding device, and a storage bin; the storage bin has a front end movably connected to the clamp head and a rear end opposite to the front end; one end of the push rod is connected to the push handle, and the other end is connected to the rear end of the storage bin and acts on the storage bin to open or clamp the clamp head. The feeding device includes a transmission member and a driving member for driving the transmission member to move. A plurality of clips for clamping blood vessels are arranged in the storage bin, and the transmission member extends into the storage bin to push the clips into the clamp head. This continuous-fire clip applicator can simultaneously perform the feeding and clamping of multiple or continuous hemostatic clips, and does not require removing the hemostatic forceps outside the body to reinstall the clips, and can stop bleeding for multiple blood vessels.

[0004] In the above continuous-fire clip applicator, a plurality of clips for clamping blood vessels are sequentially placed, and the adjacent clips are arranged end to end. In this way, during the process of pushing the clip towards the clamp head, the rear end of the clip located at the front may move into the two clamping arms of the clip located at the rear, resulting in a clamping phenomenon, so that the clip located at the front cannot move smoothly to the clamping part of the clip applicator. Summary of the Invention

[0005] To solve the technical problems in the prior art, the present disclosure provides a continuous-fire clip applicator that can avoid the clamping phenomenon during the movement of two adjacent clips by providing a separator.

[0006] In one aspect of the embodiments of the present disclosure, a continuous clip applicator is provided, comprising: a grip portion, a driving mechanism, a coupling portion, a connecting tube, and a clamping head portion. The driving mechanism is installed within the grip portion. The coupling portion reciprocates linearly under the drive of the driving mechanism. The rear end of the connecting tube is installed on the grip portion. The clamping head portion includes: pliers, a clip magazine portion, and a clip pushing mechanism. The pliers include two cross-set plier arms pivotally mounted at the front end of the connecting tube, the coupling portion is connected to the rear ends of the two plier arms, and each plier arm includes a clamping portion adapted to clamp a first clip; the clip magazine portion is configured to extend from the outside of the connecting tube to the inside of the connecting tube through the space defined by the pliers, and a plurality of second clips are movably accommodated in sequence in the accommodation channel defined by the clip magazine portion; the clip pushing mechanism is configured to push the second clips sequentially towards the clamping portion under the drive of the coupling portion, and the clip pushing mechanism includes a separator inserted between two adjacent second clips and configured to push the front one of the two second clips towards the clamping portion.

[0007] According to an embodiment of the present disclosure, the clip pushing mechanism further includes: a base portion and a cantilever. The base portion is configured to reciprocate linearly under the drive of the coupling portion, and the rear end of the rearmost second clip abuts against the base portion; the cantilever is detachably mounted on the base portion and extends forward from the base portion, and the separator extends obliquely from the cantilever to between two adjacent second clips.

[0008] According to an embodiment of the present disclosure, the coupling portion includes: a substantially U-shaped connecting portion, a clip pushing shaft, and a hollow shaft. The two connecting arms of the connecting portion are respectively combined with the rear portions of the plier arms of the pliers to drive the pliers to open or close, and the base portion of the clip pushing mechanism is located between the two connecting arms; the clip pushing shaft passes through the bottom of the connecting portion and is connected to the base portion of the clip pushing mechanism, and the clip pushing shaft is configured to drive the clip pushing mechanism to reciprocate linearly and pull the connecting portion backward to close the pliers; the hollow shaft is slidably sleeved outside the clip pushing shaft and inside the connecting tube, and the front end of the hollow shaft abuts against the side of the bottom of the connecting portion opposite to the clip pushing mechanism to push the connecting portion forward and open the pliers.

[0009] According to an embodiment of the present disclosure, the clip magazine portion includes two semi-bodies snapped together with each other, and each semi-body includes: a flat portion and two vertical walls. A first through hole is provided on the flat portion; the two vertical walls extend perpendicularly to the flat portion from both sides in the length direction of the flat portion, and at least two pairs of positioning grooves extending in the transverse direction are provided on the two vertical walls, and the positioning grooves are adapted to cooperate with the clamping protrusions on the clamping arms of the clip.

[0010] According to an embodiment of the present disclosure, the front wall of the positioning groove is arranged to be inclined to allow the clamping protrusion to disengage from the positioning groove when the second clip is pushed forward, and the rear wall of the positioning groove is arranged to be parallel to the lateral direction to prevent the clamping protrusion from disengaging from the positioning groove when the second clip is pulled backward.

[0011] According to an embodiment of the present disclosure, a rib protruding inward is provided on the flat portion of one of the halves adjacent to the cantilever in the half body, and the rear end of the rib is formed as a slope, and the slope cooperates with the separator to guide the separator to move between the two second clips, so that the rib holds the separator between the two second clips during the forward movement of the clip pushing mechanism.

[0012] According to an embodiment of the present disclosure, a guiding groove opening toward the rear is provided on the flat portion, and the base portion is partially received in the guiding groove to reciprocate linearly in the guiding groove.

[0013] According to an embodiment of the present disclosure, each pliers arm further includes a driving portion adapted to drive the clamping portion to act, and the driving portion includes: a first extension arm and a second extension arm. The first extension arm extends backward from the rear end of the clamping portion, and an inwardly protruding first protrusion is provided at the rear end of the first extension arm, and a first pivot hole is provided on the first protrusion; the second extension arm extends backward from the rear end of the clamping portion parallel to the first extension arm, the length of the second extension arm is greater than the length of the first extension arm, and an inwardly protruding second protrusion is provided at the rear end of the second extension arm, and a second pivot hole aligned with the first pivot hole and an elongated clamping hole located behind the second pivot hole are provided on the second protrusion. The pliers and the clip storage portion are connected to the front end of the connecting pipe by passing a first pivot through the first pivot hole, the second pivot hole and the first through hole, and the second protrusion is connected to the connecting arm by passing a second pivot through the clamping hole and the connecting arm.

[0014] According to an embodiment of the present disclosure, a coupling groove is provided on the side of the base where the cantilever is provided, and the cantilever is detachably connected to the coupling groove by screws in a threaded manner, and a mounting hole is provided at a portion of the connecting pipe opposite to the screws.

[0015] According to an embodiment of the present disclosure, a groove adapted to partially receive the rear portion of the second clip is provided on the inner side of the cantilever.

[0016] According to an embodiment of the present disclosure, the continuous clip applicator provided by the present disclosure is provided with a clip magazine part capable of preloading a plurality of clips at the jaw head part. During the surgical process, the clips in the clip magazine part can be sequentially pushed to the clamping part of the forceps by a driving mechanism in the grip part. By providing a partition piece to separate two adjacent clips in the clip magazine part, the two adjacent clips are in a state of being separated by the partition piece. During the movement of the clip, one clip located in front of the partition piece is pushed to the clamping part, thereby realizing continuous clip application, avoiding the phenomenon of clamping during the movement of two adjacent clips, and enabling the clip located in the front part to be smoothly pushed out. Description of the Drawings

[0017] Figure 1 Schematically shows a perspective view of a clip;

[0018] Figure 2 Schematically shows a front view of the continuous clip applicator according to an embodiment of the present disclosure;

[0019] Figure 3 Schematically shows a perspective view of the jaw head part of the continuous clip applicator according to an embodiment of the present disclosure;

[0020] Figure 4 Schematically shows a perspective view of the internal structure of the jaw head part according to an embodiment of the present disclosure;

[0021] Figure 5 Schematically shows an exploded perspective view of the jaw head part and the joint part according to an embodiment of the present disclosure;

[0022] Figure 6 Schematically shows a partial perspective view of a connecting tube according to an embodiment of the present disclosure;

[0023] Figure 7 Schematically shows a perspective view of the base of the clip pushing mechanism according to an embodiment of the present disclosure;

[0024] Figure 8 Schematically shows a perspective view of the cantilever and the partition piece of the clip pushing mechanism according to an embodiment of the present disclosure;

[0025] Figure 9 Schematically shows a perspective view of the connecting part according to an embodiment of the present disclosure;

[0026] Figure 10 Schematically shows a perspective view of a half body according to an embodiment of the present disclosure;

[0027] Figure 11 Schematically shows a perspective view of the forceps arm according to an embodiment of the present disclosure;

[0028] Figure 12 Schematically shows an enlarged view of the grip part according to an embodiment of the present disclosure;

[0029] Figure 13 A perspective view of the first angle schematically showing the internal structure of the grip portion according to an embodiment of the present disclosure;

[0030] Figure 14 A perspective view of the second angle schematically showing the internal structure of the grip portion according to an embodiment of the present disclosure;

[0031] Figure 15 A perspective view schematically showing the main handle according to an embodiment of the present disclosure;

[0032] Figure 16 A perspective view schematically showing the moving portion according to an embodiment of the present disclosure;

[0033] Figure 17 A perspective view schematically showing the main body box according to an embodiment of the present disclosure;

[0034] Figure 18 Schematically showing Figure 13 A partial enlarged view of part A of the internal structure of the grip portion shown;

[0035] Figure 19 Schematically showing Figure 13 A partial enlarged view of part B of the internal structure of the grip portion shown;

[0036] Figure 20 Schematically showing Figure 14 A partial enlarged view of part D of the internal structure of the grip portion shown;

[0037] Figure 21 Schematically showing Figure 13 A partial enlarged view of the rotating mechanism part of the grip portion shown;

[0038] Figure 22 Schematically showing Figure 13 A partial enlarged view of part C of the internal structure of the grip portion shown;

[0039] Figure 23 A perspective view schematically showing the rotating mechanism according to an embodiment of the present disclosure; and

[0040] Figure 24 A perspective view schematically showing the flexible joint according to an embodiment of the present disclosure.

[0041] Explanation of reference numerals:

[0042] 1 - Grip portion;

[0043] 11 - Main body portion;

[0044] 111 - Main body box;

[0045] 1111 - First slot; 1112 - Second slot; 1113 - Support frame; 1114 - Guide wheel bracket; 1115 - First bearing groove; 1116 - Second bearing groove;

[0046] 112 - First elastic member; 113 - Second elastic member; 114 - Runner; 115 - First guide wheel; 116 - Second guide wheel; 117 - Third guide wheel; 118 - Fourth guide wheel; 119 - Sixth guide wheel; 120 - Seventh guide wheel;

[0047] 12 - Operating handle;

[0048] 121 - Main handle;

[0049] 1211 - Installation part; 1212 - Accommodation chamber; 1213 - Moving part; 1214 - Second through hole; 1215 - Handwheel;

[0050] 122 - First wire conduit; 123 - Tension cable; 124 - Ring cable; 125 - Second wire conduit;

[0051] 126 - Rotating mechanism;

[0052] 1261 - Base; 1262 - Hollow shaft; 1263 - Extension part; 1264 - Third through hole;

[0053] 127 - Swing pivot; 128 - First driving wheel; 129 - Second driving wheel; 1291 - Bearing; 1210 - Drum; 1220 - First swing cable; 1221 - Second swing cable; 1222 - Fifth guide wheel;

[0054] 13 - Auxiliary handle; 14 - Handle pivot; 15 - Connecting rod;

[0055] 2 - Coupling part;

[0056] 21 - Connecting part; 211 - Connecting arm; 2111 - Fourth pivot hole; 2112 - Fourth through hole;

[0057] 212 - Bottom; 2121 - Shaft through hole;

[0058] 22 - Pusher clip shaft; 221 - First blocking projection; 222 - Second blocking projection;

[0059] 23 - Hollow shaft; 231 - Third blocking projection;

[0060] 3 - Clamping head;

[0061] 31 - Second pivot;

[0062] 32 - Clamping arm;

[0063] 321 - Clamping part;

[0064] 322 - First extension arm; 3221 - First protrusion; 3222 - First pivot hole;

[0065] 323 - Second extension arm; 3231 - Second protrusion; 3232 - Second pivot hole; 3233 - Clamping hole;

[0066] 33 - Half body;

[0067] 331 - Flat part; 332 - First through hole; 333 - Standing wall;

[0068] 334 - Positioning groove; 3341 - Front wall; 3342 - Rear wall;

[0069] 335 - Rib; 3351 - Ramp;

[0070] 336 - Guide groove;

[0071] 34 - Push - clamp mechanism;

[0072] 341 - Separator;

[0073] 342 - Base; 3421 - Combining groove; 3422 - Groove;

[0074] 343 - Cantilever;

[0075] 35 - Second clip; 351 - Clamping arm; 352 - Clamping protrusion;

[0076] 36 - First pivot;.

[0077] 4 - Connecting pipe;

[0078] 5 - Protection pipe;

[0079] 51 - Mounting hole; 52 - Third pivot hole; 53 - Circular groove; 54 - Guide groove;

[0080] 6 - Flexible joint;

[0081] 61 - Starting joint; 62 - Ending joint; 63 - Intermediate joint; 64 - Auxiliary cable; 65 - Boss;

[0082] 66 - Hollow cylinder;

[0083] 7 - Rotating bearing. Detailed implementation mode

[0084] To make the objectives, technical solutions, and advantages of the present disclosure clearer and more understandable, the following provides a further detailed description of the present disclosure in combination with specific embodiments and with reference to the accompanying drawings. However, the present disclosure can be implemented in different forms and should not be construed as limited to the embodiments presented herein. On the contrary, providing these embodiments will make the disclosure thorough and complete, and will fully convey the scope of the present disclosure to those skilled in the art. In the drawings, for clarity, the dimensions and relative dimensions of layers and regions may be exaggerated, and the same reference numerals denote the same elements throughout.

[0085] Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. However, it should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the present disclosure. In the following detailed description, for the sake of explanation, numerous specific details are set forth to provide a comprehensive understanding of the embodiments of the present disclosure. However, it is obvious that one or more embodiments can also be implemented without these specific details. In addition, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessarily confusing the concepts of the present disclosure.

[0086] The terms used herein are merely for the purpose of describing specific embodiments and are not intended to limit the present disclosure. The terms "including", "comprising", etc. used herein indicate the presence of the described features, steps, operations, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, or components.

[0087] All terms used herein (including technical and scientific terms) have the meanings commonly understood by those skilled in the art, unless otherwise defined. It should be noted that the terms used herein should be interpreted as having a meaning consistent with the context of this specification and should not be interpreted in an idealized or overly rigid manner.

[0088] To facilitate the understanding of the technical solutions of the present disclosure by those skilled in the art, the following technical terms are now explained.

[0089] In cases where expressions similar to "at least one of A, B, and C, etc." are used, generally, it should be interpreted according to the meaning commonly understood by those skilled in the art (for example, "a system having at least one of A, B, and C" should include, but not be limited to, a system having only A, only B, only C, having A and B, having A and C, having B and C, and / or having A, B, and C, etc.). In cases where expressions similar to "at least one of A, B, or C, etc." are used, generally, it should be interpreted according to the meaning commonly understood by those skilled in the art (for example, "a system having at least one of A, B, or C" should include, but not be limited to, a system having only A, only B, only C, having A and B, having A and C, having B and C, and / or having A, B, and C, etc.).

[0090] It should be noted that in this disclosure, "front" and "rear" are relative to the operator using the continuous clip applicator provided by this disclosure. The end closer to the operator (such as a doctor) is the "rear", and the end farther from the operator is the "front". As Figure 1 shown in the perspective view of the continuous clip applicator, the upper end (one end of the grip) is the "rear", and the lower end (one end of the pliers) is the "front". For example, in Figure 4 , the movement from left to right is "movement backward", and the movement from right to left is "movement forward".

[0091] Figure 1 A perspective view of the clip is schematically shown.

[0092] The ligating clip (Hemolok clip (Teleflex ligation)) is a non-metallic medical closure clip, which can be used for vascular hemostasis during surgery, or to replace suture ligation, or to clamp the urinary tract. As Figure 1 shown, the clip (ligating clip) 35 has a generally V shape and includes two clamping arms 351 and two clamping protrusions 352 respectively located at both ends of the clamping arms 351.

[0093] Figure 2 A front view of the continuous clip applicator according to an embodiment of the present disclosure is schematically shown. Figure 3 A perspective view of the continuous clip head of the clip applicator according to an embodiment of the present disclosure is schematically shown. Figure 4 A perspective view of the internal structure of the clip head according to an embodiment of the present disclosure is schematically shown.

[0094] One aspect of the embodiments of the present disclosure provides a continuous clip applicator. As Figures 2 - 4 shown, it includes: a grip portion 1, a driving mechanism, a coupling portion 2, a connecting tube 4, and a clip head portion 3. The driving mechanism is installed inside the grip portion for operating the continuous clip applicator. The coupling portion 2 reciprocates linearly under the drive of the driving mechanism. As Figure 2 shown, the rear end of the connecting tube 4 is installed on the grip portion. As Figure 3 shown, the clip head portion 3 includes: pliers, a clip magazine portion, and a clip pushing mechanism 34. As Figure 4 shown, the pliers include two cross-set and pivotally mounted clamping arms 32 at the front end of the connecting tube 4. The coupling portion 2 is connected to the rear ends of the two clamping arms 32. Each clamping arm 32 includes a clamping portion 321 adapted to clamp the first clip. As Figure 4 shown, the clip magazine portion is configured to extend from the outside of the connecting tube 4 to the inside of the connecting tube 4 through the space defined by the pliers. A plurality of second clips 35 are movably accommodated in sequence in the accommodation channel defined by the clip magazine portion. The clip pushing mechanism 34 is configured to push the second clips 35 sequentially toward the clamping portion 321 under the drive of the coupling portion 2. As Figure 4As shown, the clip pushing mechanism 34 includes a separator 341. The separator 341 is inserted between two adjacent second clips 35 and is configured to push one of the two second clips located at the front towards the clamping portion 321.

[0095] In Figure 2 the illustrated embodiment, the connecting tube 4 includes two separate tube portions and a flexible joint 6 connected between the two tube portions (which will be described in detail later with reference to Figure 24 . In an alternative embodiment, the connecting tube 4 may include an integral tubular member.

[0096] For the continuous clip applicator according to an embodiment of the present disclosure, by providing a clip storage portion capable of preloading multiple clips in the clamp head portion 3, during the surgical procedure, the driving mechanism in the grip portion 1 can be used to sequentially push the clips in the clip storage portion to the clamping portion 321 of the pliers and clamp the clips onto blood vessels or urinary tubes. The multiple clips are arranged in sequence at the head and tail in the clip storage portion, and the opening portions face the front and the tails face the rear. By providing the separator 341 to separate two adjacent clips in the clip storage portion, the two adjacent clips are in a state of being separated by the separator 341. During the movement of the clips, one clip located in front of the separator 341 is pushed to the clamping portion 321, thereby realizing continuous clip application, avoiding the phenomenon of clamping during the movement of two adjacent clips, and enabling the clip located in the front to be smoothly pushed out, improving the surgical efficiency and saving the surgical time.

[0097] According to an embodiment of the present disclosure, the clip storage portion can accommodate a number of second clips such as 1, 2, 3, 5, 10, etc.

[0098] Figure 5 Schematically shows an exploded perspective view of the clamp head portion and the coupling portion according to an embodiment of the present disclosure, Figure 6 Schematically shows a partial perspective view of the connecting tube according to an embodiment of the present disclosure.

[0099] According to an embodiment of the present disclosure, as Figure 6 shown, a guide groove 54 for accommodating the movement of the clip storage portion is formed in the connecting tube 4, so that the clip storage portion moves along the guide groove 54 at the front end of the connecting tube 4.

[0100] Figure 7 Schematically shows a perspective view of the base of the clip pushing mechanism according to an embodiment of the present disclosure, Figure 8 Schematically shows a perspective view of the cantilever and the separator of the clip pushing mechanism according to an embodiment of the present disclosure.

[0101] According to an embodiment of the present disclosure, as Figure 5 , Figure 7 and Figure 8As shown, the clip pushing mechanism 34 further includes a base 342 and a cantilever 343. The base 342 is configured to reciprocate linearly under the drive of the joint part 2. The rear end of the second clip 35 located at the rearmost side abuts against the base 342 and moves forward under the push of the base 342. As Figure 7 and Figure 8 shown, the cantilever 343 is detachably mounted on the base 342 and extends forward from the base 342. The separator 341 obliquely extends from the cantilever 343 between two adjacent second clips 35 and abuts against the rear end of the base 342 located at the front part.

[0102] According to an embodiment of the present disclosure, the material of the cantilever is an elastic material that can swing up and down, such as stainless steel.

[0103] According to an embodiment of the present disclosure, as Figure 7 shown, a joint groove 3421 is provided on one side of the base 342 where the cantilever 343 is located. The cantilever 343 is detachably connected to the joint groove 3421 by screwing. An installation hole 51 is provided at a part of the connecting pipe 4 opposite to the screw.

[0104] According to an embodiment of the present disclosure, the cantilever 343 and the base 342 of the clip pushing mechanism 34 can be disassembled or fixed by using a tool such as a screwdriver through the installation hole 51 on the connecting pipe 4. In this way, when the cantilever 343 is disassembled, a second clip is pushed to the front side of the base; then, the cantilever 343 is connected to the base 342; then, another second clip is pushed to the front part of the separator 341.

[0105] According to an embodiment of the present disclosure, the installation hole 51 can be a round hole or an elongated hole.

[0106] According to an embodiment of the present disclosure, the hole on the base 342 connected to the cantilever 343 can be a threaded hole.

[0107] According to an embodiment of the present disclosure, as Figure 7 shown, a groove 3422 is provided inside the cantilever 343 for partially accommodating the rear part of the second clip 35. The shape of the groove 3422 matches the shape of the rear part of the second clip.

[0108] According to an embodiment of the present disclosure, by providing the groove 3422, the rear part of a second clip 35 near the front end of the base 342 abuts against the inside of the groove 3422. When the clip pushing mechanism 34 pushes the second clip 35 forward, the second clip 35 located at the rearmost side can move forward smoothly.

[0109] Figure 9 A perspective view of the joint part according to an embodiment of the present disclosure is schematically shown.

[0110] According to an embodiment of the present disclosure, asFigure 4 and Figure 5 As shown, the joint portion 2 includes a substantially U-shaped connecting portion 21, a staple pushing shaft 22, and a hollow shaft 23. As Figure 4 and Figure 9 shown, the two connecting arms 211 of the connecting portion 21 are respectively combined with the rear portions of the pliers arms 32 of the pliers to drive the pliers to open or close (which will be further described below with reference to Figure 11 in detail), and the base portion 342 of the staple pushing mechanism 34 is located between the two connecting arms 211. The staple pushing shaft 22 passes through the bottom 212 of the connecting portion 21 and is connected to the base portion 342 of the staple pushing mechanism 34. The staple pushing shaft 22 is configured to drive the staple pushing mechanism 34 to reciprocate linearly in the front-rear direction and pull the connecting portion 21 backward to close the pliers. The hollow shaft 23 is slidably sleeved outside the staple pushing shaft 22 and inside the connecting pipe 4. The front end of the hollow shaft 23 abuts against the side of the bottom 212 of the connecting portion 21 opposite to the staple pushing mechanism 34 to push the connecting portion 21 forward and open the pliers during the forward movement of the hollow shaft 23.

[0111] According to an embodiment of the present disclosure, as Figure 9 shown, a shaft passing hole 2121 is provided in the bottom 212 of the connecting portion 21 to enable the staple pushing shaft 22 to pass through the connecting portion 21 and be connected to the base portion 342. A fourth through hole 2112 aligned with the mounting hole 51 of the connecting pipe 4 is provided on one of the connecting arms 211 adjacent to the cantilever 343 of the staple pushing mechanism 34. A tool such as a screwdriver passes through the mounting hole 51 and the fourth through hole 2112 to disassemble or fix the cantilever 343 and the base portion 342 of the staple pushing mechanism 34.

[0112] According to an embodiment of the present disclosure, the outer diameter of the hollow shaft 23 is larger than the diameter of the shaft passing hole 2121 in the bottom 212 of the connecting portion 21, so that the hollow shaft 23 passes through the shaft passing hole and slides to push the connecting portion 21 forward.

[0113] According to an embodiment of the present disclosure, the material of the staple pushing shaft 22 and / or the hollow shaft 23 can be any one of metal, plastic, etc. For example, it can be stainless steel.

[0114] According to an embodiment of the present disclosure, as Figure 4 and Figure 5 shown, a first blocking protrusion 221 protruding circumferentially is provided at the front end of the staple pushing shaft 22. The first blocking protrusion 221 abuts between the base portion 342 of the staple pushing mechanism 34 and the bottom 212 of the connecting portion 21 to push the staple pushing mechanism 34 forward or pull the connecting portion 21 backward under the drive of the driving mechanism.

[0115] Figure 10 Schematically shows a perspective view of a half body according to an embodiment of the present disclosure.

[0116] According to an embodiment of the present disclosure, asFigure 5 As shown, the clamping compartment includes two half bodies 33 that are buckled together. Figure 10 As shown, each half body 33 includes a substantially rectangular flat portion 331 and two vertical walls 333. The flat portion 331 is provided with a first through hole 332, and the two vertical walls 333 extend perpendicularly to the flat portion 331 from both sides in the length direction of the flat portion 331. The two vertical walls 333 are provided with at least two pairs of positioning grooves 334 extending in the transverse direction, and the positioning grooves 334 are suitable for cooperating with the clamping protrusions 352 on the clamping arms 351 of the clamp.

[0117] According to the embodiments of the present disclosure, Figure 10 As shown, the front wall 3341 of the positioning groove 334 is arranged to be inclined to allow the clamping protrusion 352 to disengage from the positioning groove 334 when the second clip 35 is pushed forward, and the rear wall 3342 of the positioning groove 334 is arranged to be parallel to the lateral direction to prevent the clamping protrusion 352 from disengaging from the positioning groove 334 when the second clip 35 is pulled backward.

[0118] According to the embodiments of the present disclosure, Figure 4 and Figure 10 As shown, a convex rib 335 protruding inward is provided on the flat portion 331 of one of the half bodies 33 adjacent to the cantilever 343, and the rear end of the convex rib 335 is formed as a slope 3351, which cooperates with the separator 341 to guide the separator 341 to move toward between the two second clamps 35, so that the convex rib 335 keeps the separator 341 between the two second clamps 35 when the pushing and clamping mechanism 34 moves forward.

[0119] According to an embodiment of the present disclosure, by providing a convex rib 335 on the half body 33, when the clamping mechanism 34 pushes the second clamp forward, the rear end of the second clamp 35 is always in contact with the front end of the partition plate 341, and will not move downward due to the elasticity of the clamping arm 351 and lose contact with the partition plate 341.

[0120] According to an embodiment of the present disclosure, the first through hole 332 is disposed on the convex rib 335 , so that when the first pivot 36 passes through the first through hole 332 , an obstacle that blocks the second clip 35 from moving forward is avoided from being formed in the accommodating channel formed by the two half bodies 33 .

[0121] According to the embodiments of the present disclosure, Figure 9 As shown, a guide groove 336 opening toward the rear is provided on the flat portion 331 , and a base 342 of the push-and-clip mechanism is partially accommodated in the guide groove 336 to reciprocate linearly in the guide groove 336 in the front-rear direction.

[0122] According to an embodiment of the present disclosure, the length of the guide groove 336 is greater than or equal to the distance between two adjacent second clips 35 in the clip compartment.

[0123] Figure 11 A perspective view of a pliers arm according to an embodiment of the present disclosure is schematically shown.

[0124] According to an embodiment of the present disclosure, as Figure 11 shown, each pliers arm 32 further includes a driving portion adapted to drive the clamping portion to act. The driving portion includes a first extension arm 322 and a second extension arm 323. The first extension arm 322 extends rearward from the rear end of the clamping portion 321. A first protruding portion 3221 protruding inward is provided at the rear end of the first extension arm 322, and a first pivot hole 3222 is provided on the first protruding portion 3221; the second extension arm 323 extends rearward parallel to the first extension arm 322 from the rear end of the clamping portion 321. The length of the second extension arm 323 is greater than the length of the first extension arm 322. A second protruding portion 3231 protruding inward is provided at the rear end of the second extension arm 323, and a second pivot hole 3232 aligned with the first pivot hole 3222 and an elongated clamping hole 3233 located behind the second pivot hole 3232 are provided on the second protruding portion 3231. As Figure 4 and Figure 5 shown, the pliers and the cartridge portion are connected to the front end of the connecting pipe 4 by using a first pivot 36 to pass through the first pivot hole 3222, the second pivot hole 3232 and the first through hole 332, and the second protruding portion 3231 is connected to the connecting arm 211 by using a second pivot 31 to pass through the clamping hole 3233 and the connecting arm 211. The clamping hole 3233 is arranged to be inclined with respect to the front-rear direction, so that when the second pivot 31 moves relative to the clamping hole 3233 under the drive of the connecting portion 21, the pliers arm 32 is driven to rotate around the first pivot 36, so that the pliers are opened or closed.

[0125] In a schematic embodiment, the first pivot 36 is a rigid shaft.

[0126] According to an embodiment of the present disclosure, the continuous firing clip applicator at least includes two first pivots 36 and two second pivots 31.

[0127] According to an embodiment of the present disclosure, a third pivot hole 52 is provided at the front end of the connecting pipe 4, and the first pivot 36 connects the cartridge portion and the two pliers arms 32 to the connecting pipe 4 through the third pivot hole 52, and enables the two pliers arms 32 to rotate around the first pivot 36.

[0128] In a schematic embodiment, the number of the third pivot holes 52 is two.

[0129] According to an embodiment of the present disclosure, the first surface of the first extension arm 322 of the first pliers arm 32 contacts the second extension arm 323 of the second pliers arm 32, and the second surface opposite to the first surface contacts the inner wall of the guiding groove 54 of the connecting pipe 4.

[0130] According to an embodiment of the present disclosure, asFigure 4 and Figure 9 As shown, two coaxial fourth pivot holes 2111 are respectively provided at the front ends of the two connecting arms 211 of the connecting portion 21. As Figure 4 shown, the second pivot 31 respectively passes through the fourth pivot holes 2111 and is inserted into the clamping holes 3233, connecting the two connecting arms 211 of the connecting portion 21 with the two clamping arms 32, so that the connecting portion 21 can drive the second pivot 31 to move within the clamping holes 3233 to drive the pliers to rotate around the first pivot 36, thereby realizing the opening and closing of the pliers.

[0131] According to an embodiment of the present disclosure, by providing a guide groove 54 in the connecting pipe 4, the connecting portion 21 moves back and forth within the guide groove 54, so that the opening and closing of the pliers are symmetric.

[0132] According to an embodiment of the present disclosure, the driving mechanism is configured to drive the engaging portion 2 to pull the pliers closed during the process of gripping the grip portion 1.

[0133] Figure 12 Schematically shows an enlarged view of the grip portion according to an embodiment of the present disclosure, Figure 13 Schematically shows a perspective view of the internal structure of the grip portion from a first perspective according to an embodiment of the present disclosure, Figure 14 Schematically shows a perspective view of the internal structure of the grip portion from a second perspective according to an embodiment of the present disclosure.

[0134] According to an embodiment of the present disclosure, as Figures 12 - 14 shown, the grip portion 1 includes a main body portion 11, an operation handle 12, and an auxiliary handle 13. Among them, the operation handle 12 includes a main handle 121 installed on the main body portion 11. A receiving space is formed within the main body portion 11, and the driving mechanism is movably installed within the main handle 121. An installation portion 1211 is installed on the main body portion 11, and a handle pivot 14 is provided on the installation portion 1211. The auxiliary handle 13 is pivotally installed on the main handle 121 through the handle pivot 14, and the movement of the auxiliary handle 13 relative to the main handle 121 drives the driving mechanism to move back and forth linearly, thereby driving the push clip shaft 22 and the hollow shaft 23 to move in the axial direction.

[0135] Figure 15 Schematically shows a perspective view of the main handle according to an embodiment of the present disclosure.

[0136] According to an embodiment of the present disclosure, as Figures 13 to 15As shown, a receiving chamber 1212 is provided inside the main handle 121. The drive mechanism includes a moving part 1213 and a connecting rod 15. The moving part 1213 is movably installed in the receiving chamber 1212 of the main handle. Two ends of the connecting rod 15 are respectively pivotally connected to the moving part 1213 and a portion of the auxiliary handle 13 remote from the handle pivot 14, such that the movement of the auxiliary handle 13 relative to the operating handle 12 drives the moving part 1213 to reciprocate linearly in the receiving chamber 1212 through the connecting rod 15. Figures 13 - 15 The main body part of the main handle is shown, and it can be understood that Figures 13 - 15 a cover body coupled by screws is further provided on the shown main body part.

[0137] Figure 16 A perspective view of the moving part according to an embodiment of the present disclosure is schematically shown.

[0138] According to an embodiment of the present disclosure, as Figure 16 shown, a fixing groove is formed at one end of the moving part 1213, and a second through hole 1214 is formed in the groove wall of the fixing groove. A rotating shaft passes through the second through hole 1214 and a through hole on the connecting rod 15 to connect the moving part 1213 in the main handle 121 with the connecting rod 15. Both ends of the connecting rod 15 have through holes. One end is pivotally connected to the moving part 1213 in the main handle 121, and the other end is pivotally connected to the auxiliary handle 13. One end of a tension cable 123 (to be described in detail below) passes through a through hole 1215 provided on the moving part 1213 and is connected to the moving part 1213.

[0139] In a schematic embodiment, as Figure 13 and Figure 14 shown, a first round hole is formed at one end of the auxiliary handle 13 connected to the main handle 121. The handle pivot 14 is disposed on a mounting portion 1211 fixed to the main handle 121, and the first round hole is inserted on the handle pivot 14 of the main handle 121, enabling the auxiliary handle 13 to rotate around the handle pivot 14. In an alternative embodiment, the handle pivot 14 is disposed on the main handle 121.

[0140] In a schematic embodiment, as Figure 13 and Figure 14 shown, a second round hole connected to the connecting rod 15 is further provided on the auxiliary handle 13, enabling the moving part 1213 to move in the receiving chamber 1212 inside the main handle 121. When the auxiliary handle 13 is close to the main handle 121, the auxiliary handle 13 pushes the moving part 1213 to move in a direction away from the auxiliary handle 13. The moving part 1213 drives the tension cable 123 to be tightened, causing the first elastic member 112 and the second elastic member 113 to be compressed successively, resulting in the closing of the pliers.

[0141] According to an embodiment of the present disclosure, as Figure 13 andFigure 14 As shown, the continuous clip applicator further includes an elastic mechanism installed in the grip portion 1. The elastic mechanism is configured to drive the engaging portion 2 to push the pliers open to release the first clip and drive the engaging portion 2 to push the second clip 35 into the clamping portion 321 of the pliers during the process of releasing the grip portion 1.

[0142] According to an embodiment of the present disclosure, as Figure 13 and Figure 14 shown, the elastic mechanism includes a first elastic member 112 and a second elastic member 113. The first elastic member 112 and the second elastic member 113 are elastically contracted due to the pulling of the tension cable 123 during the process of gripping the grip portion so that the auxiliary handle 13 approaches the main handle 121, and in the case of releasing the grip portion (the force for gripping the grip portion disappears), the first elastic member 112 is configured to enable the clip pushing shaft 22 to push the connecting portion 21 forward by the elastic force of the first elastic member 112. The second elastic member 113 is configured to enable the hollow shaft 23 to push the connecting portion 21 forward by the elastic force of the second elastic member 113.

[0143] According to an embodiment of the present disclosure, the first elastic member 112 and / or the second elastic member 113 is a spring.

[0144] Figure 17 A perspective view of the main body box according to an embodiment of the present disclosure is schematically shown.

[0145] According to an embodiment of the present disclosure, as Figure 12 and 13 shown, the rear ends of the hollow shaft 23 and the clip pushing shaft 22 both pass through the connecting tube 4 and extend into the accommodation space of the main body portion 11, and the clip pushing shaft 22 extends out from the second end of the hollow shaft 23. That is to say, the length of the clip pushing shaft 22 is greater than the length of the hollow shaft 23. As Figure 12 , Figure 13 and Figure 17 shown, the bottom 212 of the accommodation space is provided with a first slot 1111 and a second slot 1112. The first elastic member 112 is at least partially accommodated in the first slot 1111, and the first end of the first elastic member 112 abuts against the second blocking protrusion 222 formed on the clip pushing shaft 22, and the second end of the first elastic member 112 abuts against the end of the first slot 1111, so that the clip pushing shaft 22 moves backward against the elastic force of the first elastic member 112 under the pulling of the tension cable 123. The second elastic member 113 is at least partially accommodated in the second slot 1112 and sleeved on the part of the clip pushing shaft 22 extending out of the hollow shaft 23. The first end of the second elastic member 113 abuts against the second end of the hollow shaft 23, and the second end of the second elastic member 113 abuts against the end of the second slot 1112, so that the hollow shaft 23 moves backward against the elastic force of the second elastic member 113 during the process of moving backward with the clip pushing shaft 22.

[0146] According to an embodiment of the present disclosure, as Figure 12 and Figure 13 shown, the main body portion 11 includes a main body box 111 and a cover body ( Figure 13 the cover body in is removed), for example, a plurality of connecting posts with threaded holes are arranged in the main body box 111, and the cover body is mounted on the main body box 111 by being threadedly coupled to the mounting posts through a plurality of screws. The front end of the staple pushing shaft 22 is connected to the base 342 of the staple pushing mechanism 34, and the first blocking protrusion 221 on the staple pushing shaft 22 is located between the staple pushing mechanism 34 and the connecting portion 21. In this way, when the staple pushing shaft 22 moves backward, it can drive the connecting portion 21 to move backward. The rear end of the staple pushing shaft 22 passes through the connecting tube 4 and the hollow shaft 23 and extends into the main body portion 11. A second blocking protrusion 222 is provided at the rear end of the staple pushing shaft 22, and the second blocking protrusion 222 contacts the first elastic member 112 in the main body box 111. The first elastic member 112 is placed in the first slot 1111. The front end of the hollow shaft 23 passes through the connecting tube 4 and extends to the rear side of the connecting portion 21, and the rear end of the hollow shaft 23 contacts the second elastic member 113 in the main body box 111. The second elastic member 113 is placed in the second slot 1112.

[0147] When the staple pushing shaft 22 moves backward, the second blocking protrusion 222 at the rear end of the staple pushing shaft 22 compresses the first elastic member 112, and the first blocking protrusion 221 on the staple pushing shaft 22 at the front end of the connecting portion 21 drives the connecting portion 21 to move backward. The connecting portion 21 abuts against the front end of the hollow shaft 23 and pushes the hollow shaft 23 to move backward. The hollow shaft 23 squeezes the second elastic member 113, causing the second elastic member 113 to be compressed.

[0148] In a schematic embodiment, a third blocking protrusion 231 is circumferentially provided at the rear end of the hollow shaft 23, and the third blocking protrusion 231 contacts the front end of the second elastic member 113 to squeeze the second elastic member 113, causing the second elastic member 113 to be compressed.

[0149] In an alternative embodiment, the third blocking protrusion may be formed at a position adjacent to the rear end of the hollow shaft 23.

[0150] Figure 18 Schematically shows Figure 13 a partial enlarged view of part A of the internal structure of the grip portion shown in Figure 19 Schematically shows Figure 13 a partial enlarged view of part B of the internal structure of the grip portion shown in

[0151] According to an embodiment of the present disclosure, as Figures 12 - 14 , Figure 18 and Figure 19As shown, the continuous firing clip applicator further includes a tensioning cable assembly. When the grip portion is tightly held so that the auxiliary handle 13 moves toward the main handle 12, the moving portion 1213 of the driving mechanism pulls the clip pushing shaft 22 to move backward through the tensioning cable assembly. The tensioning cable assembly includes a first conduit 122 and a tensioning cable 123. The two ends of the first conduit 122 are respectively connected to the main body portion 11 and the auxiliary handle 13. The tensioning cable 123 passes through the first conduit 122, and the two ends of the tensioning cable 123 are respectively connected to the driving mechanism and the clip pushing shaft 22. In this way, the first conduit 122 guides the tensioning cable 123 to slide relative to the first conduit 122.

[0152] Further, the two ends of the tensioning cable 123 are respectively connected to the moving portion 1213 and the rear end of the clip pushing shaft 22, so that when the moving portion 1213 moves, it drives the tensioning cable 123 to move, thereby causing the clip pushing shaft 22 to move backward. On the other hand, when the grip portion is released (the force of tightly holding the grip portion disappears), the clip pushing shaft 22 uses the elastic force of the first elastic member 112 to push the connecting portion 21 to move forward.

[0153] According to an embodiment of the present disclosure, the tensioning cable assembly further includes a plurality of sixth guide wheels 119. The tensioning cable 123 that leads out the first conduit 122 within the main body portion is guided to the inside of the rear end of the clip pushing shaft 22 through the plurality of sixth guide wheels 119.

[0154] In a schematic embodiment, the number of the sixth guide wheels 119 is 1.

[0155] According to an embodiment of the present disclosure, as Figure 2 and Figure 5 shown, the continuous firing clip applicator further includes a protective tube 5. The clamping head portion 3 is partially installed in the protective tube 5, and the rear end of the protective tube 5 is rotatably coupled to the front end of the connecting tube 4. In an alternative embodiment, the protective tube 5 can be omitted, and the clamping head portion 3 is partially installed in the front portion of the connecting tube 4.

[0156] Further referring to Figure 6 , a circular groove 53 is formed at the rear end of the protective tube 5, and the rotating bearing 7 is fitted in the circular groove 53. The protective tube 5 and the connecting tube 4 are rotatably coupled through the rotating bearing 7.

[0157] According to an embodiment of the present disclosure, the continuous firing clip applicator further includes a handwheel 1215 and a self-rotation mechanism. The handwheel 1215 is disposed on the grip portion 1. Further, the handwheel 1215 is rotatably installed on the installation portion 1211 on the main handle 121, and driving the handwheel 1215 to rotate can drive the clip pushing shaft 22 to rotate through the self-rotation mechanism.

[0158] According to an embodiment of the present disclosure, as Figure 13 , Figure 14 and Figure 18As shown, the rear end of the staple pushing shaft 22 is formed as a driving section, and at least one flat surface is formed on the outer surface of the driving section. The self-rotation mechanism includes a support frame 1113, a runner 114, and an annular cable 124. As Figure 13 and Figure 14 shown, the support frame 1113 is disposed in the accommodation space of the main body portion 11. The runner 114 is rotatably mounted on the support frame 1113, and the driving section of the staple pushing shaft 22 passes through the runner 114, such that the staple pushing shaft 22 rotates under the drive of the runner 114 to drive the protection tube 5 and the clamping head portion 3 to rotate relative to the connecting tube 4, and allows the staple pushing shaft 22 to reciprocate linearly in the axial direction relative to the runner 114. As Figure 13 , Figure 14 and Figure 18 shown, the annular cable 124 is sleeved on the runner 114 and the hand wheel 1215, such that the hand wheel 1215 drives the runner 114 to rotate through the annular cable 124, and the runner 114 drives the staple pushing shaft 22 to rotate, so that the clamping head portion 3 and the protection tube 5 achieve self-rotation.

[0159] According to an embodiment of the present disclosure, the driving section of the staple pushing shaft 22 is any one of non-circular shapes such as D-shaped, polygonal, or elliptical.

[0160] According to an embodiment of the present disclosure, as Figure 13 and Figure 14 shown, the self-rotation mechanism further includes two second wire tubes 125. Two ends of the second wire tube 125 are respectively connected to the main body portion 11 and the operation handle 12, and the annular cable 124 passes through the two second wire tubes 125.

[0161] In a schematic embodiment, as Figure 18 shown, the continuous firing clip applicator further includes two first bearings. The runner 114 is mounted on the driving section of the staple pushing shaft 22 and is clamped between the two first bearings. The two first bearings are placed on the support frame 1113 in the main body portion 11 and rotatably support the staple pushing shaft 22. Cylindrical protrusions may be provided on both sides of the runner 114. The runner 114 is mounted on the two first bearings through the cylindrical protrusions. The staple pushing shaft 22 passes through the runner 114 and rotates following the runner 114.

[0162] According to an embodiment of the present disclosure, as Figure 14 shown, the self-rotation mechanism further includes a plurality of seventh guide wheels 120. The seventh guide wheels 120 are configured to guide the annular cable from the runner 114 into the second wire tube 125. Among them, the seventh guide wheels 120 are mounted in the main body portion 11 through guide wheel brackets 1114.

[0163] In a schematic embodiment, as Figure 14 shown, the number of the seventh guide wheels 120 is two.

[0164] According to an embodiment of the present disclosure, asFigure 2 , Figures 12 - 14 As shown, a flexible joint 6 is provided between the connecting pipe 4 and the protective pipe 5. The operating handle 12 is configured to be rotatable and swingable relative to the main body portion 11. The continuous firing clip applicator further includes a transmission mechanism connected between the flexible joint 6 and the operating handle 12, such that the rotation and swing of the operating handle 12 relative to the main body portion 11 drive the flexible joint 6 to swing in two mutually perpendicular planes.

[0165] Figure 20 Schematically shows Figure 14 a partially enlarged view of part D of the internal structure of the grip portion 1 shown in Figure 21 Schematically shows Figure 13 a partially enlarged view of the rotating mechanism portion of the grip portion 1 shown in

[0166] According to an embodiment of the present disclosure, as shown in Figure 2 , Figures 12 - 14 , Figure 20 , Figure 21 and Figure 23 shown, the operating handle 12 further includes a rotating mechanism 126 and a first driving wheel 128. The first end ( Figure 23 the upper end in Figure 23 ) of the rotating mechanism 126 is rotatably coupled to the main body portion 11, and the rotation of the rotating mechanism 126 relative to the main body portion 11 drives the flexible joint 6 to swing in a first plane through a transmission mechanism (to be described in detail below). The main handle 121 is rotatably connected to the second end ( Figure 23 the lower end in Figure 14 ) of the rotating mechanism 126 through a swing pivot 127. As shown in Figure 14 , the first driving wheel 128 is mounted on the swing pivot 127, and the swing of the main handle 121 relative to the rotating mechanism 126 drives the flexible joint 6 to swing in a second plane perpendicular to the first plane through a transmission mechanism. The clip pushing shaft 22 and the hollow shaft 23 made of a flexible shaft both pass through the flexible joint 6, such that the clip pushing shaft 22 and the hollow shaft 13 bend along with the flexible joint 6.

[0167] According to an embodiment of the present disclosure, the material of the clip pushing shaft 22 and / or the hollow shaft 23 may be nitinol or stainless steel.

[0168] In a schematic embodiment, the clip pushing shaft 22 is a wire flexible shaft.

[0169] According to an embodiment of the present disclosure, the swing pivot 127 is rotatably mounted at the second end of the rotating mechanism 126, such that the swing of the main handle 121 relative to the rotating mechanism 126 drives the swing pivot 127 to rotate, thereby driving the first driving wheel 128 to rotate relative to the rotating mechanism 126.

[0170] Figure 22 Schematically shows Figure 13Partial enlarged view of part C of the internal structure of the grip portion 1 shown.

[0171] According to an embodiment of the present disclosure, as Figure 13 , Figure 14 , Figure 20 and 21 shown, the transmission mechanism includes a second driving wheel 129, a first swing cable 1220, and a plurality of first guide wheels 115. The second driving wheel 129 is mounted on the rotating mechanism 126. The first swing cable 1220 bypasses the second driving wheel 129, and the first end and the second end of the first swing cable 1220 are respectively connected to two positions on the flexible joint 6 that are opposite to each other in the first radial direction. The plurality of first guide wheels 115 are mounted on the main body portion 11 and are adapted to guide the first swing cable 1220 into the connecting pipe 4. In this way, the rotation of the second driving wheel 129 will drive the flexible joint 6 to swing in the first radial direction through the first swing cable 1220 passing through the connecting pipe 4.

[0172] According to an embodiment of the present disclosure, the main body portion 11 further includes a plurality of guide wheel brackets 1114, and the plurality of first guide wheels 115 are mounted in the accommodation space of the main body portion 11 through the guide wheel brackets 1114.

[0173] In a schematic embodiment, as Figure 12 and Figure 22 shown, four first guide wheels 115 are mounted in the main body portion 11 through the guide wheel brackets 1114.

[0174] Figure 23 Schematically shows a three-dimensional view of the rotating mechanism according to an embodiment of the present disclosure.

[0175] According to an embodiment of the present disclosure, as Figure 23 shown, the rotating mechanism 126 has a transmission channel from the first end to the second end.

[0176] According to an embodiment of the present disclosure, as Figure 13 and Figure 14As shown, the transmission mechanism further includes a second guide pulley 116, a third guide pulley 117, a second swing cable 1221, and a plurality of fourth guide pulleys 118. The second guide pulley 116 and the third guide pulley 117 are disposed at an end of the rotating mechanism 126 opposite to the main handle 121. The second swing cable 1221 bypasses the first driving pulley 128, passes through the transmission channel, and then bypasses the second guide pulley 116 and the third guide pulley 117 respectively. The first end and the second end of the second swing cable 1221 are respectively connected to two positions of the flexible joint 6 that are opposite to each other in a second radial direction perpendicular to the first radial direction. In this way, the rotation of the first driving pulley 128 will drive the flexible joint 6 to swing in the second radial direction through the second swing cable 1221 passing through the connecting pipe 4, so that the flexible joint 6 can swing in two dimensions. The plurality of fourth guide pulleys 118 are mounted on the main body 11 and are adapted to guide the second swing cable 1221 into the connecting pipe 4.

[0177] In a schematic embodiment, as Figure 13 shown, the number of the fourth guide pulleys 118 is five.

[0178] According to an embodiment of the present disclosure, as Figure 20 and Figure 23 shown, the rotating mechanism 126 includes a base 1261, a hollow shaft 1262, and an extension 1263. The hollow shaft 1262 is mounted on the first side ( Figure 23 the upper side in

[0179] this case) of the base 1261, and the second driving pulley 129 is mounted on the hollow shaft 1262. The extension 1263 extends obliquely from the second side of the base 1261 opposite to the first side with respect to the axis of the hollow shaft 1262, so as to increase the torque for driving the rotation of the rotating mechanism 126 by the main handle 121 and enable the operator to have a better operating feeling. The first driving pulley 128 is mounted at the free end of the extension 1263, and the fifth guide pulley 1222 is rotatably mounted in the base 1261 through a pivot 1264 to guide the first swing cable 1220 into the hollow shaft 1262. Figure 2 、 Figure 13 and 14 shown, the main body 11 further includes an upper connection box and a lower connection box that are combined together up and down. The part of the rotating mechanism 126 extending out of the main body 11 is disposed in a cavity formed by the upper connection box and the lower connection box. The first driving pulley 128 is mounted in the extension 1263 of the rotating mechanism 126 through a swing pivot 127. The main handle 121 can rotate around the swing pivot 127 to drive the rotation of the first driving pulley 128, and the first driving pulley 128 drives the second swing cable 1221 to deflect the flexible joint 6 in the second plane.

[0180] In a schematic embodiment, the number of the fifth guide pulleys is two.

[0181] According to an embodiment of the present disclosure, the swing pivot 127 is a non-circular bearing, for example, it can be any one of a polygon, D-shaped, elliptical, etc.

[0182] In a schematic embodiment, as Figure 20 and Figure 23 shown, the swing pivot 127 is a D-shaped shaft.

[0183] According to an embodiment of the present disclosure, as Figure 17 , Figure 21 and Figure 23 shown, the second driving wheel 129 is installed at the end of the hollow shaft 1262 to rotate with the hollow shaft. Specifically, the continuous firing clip applicator further includes two bearings 1291. The second driving wheel 129 is installed on the hollow shaft 1262 of the rotating mechanism 126 and is sandwiched between the two bearings 1291. The two bearings 1291 are placed in the first bearing groove 1115 in the main body 11 and rotatably support the hollow shaft 1262.

[0184] According to an embodiment of the present disclosure, as Figure 17 , Figure 21 and Figure 23 shown, the transmission mechanism further includes a roller 1210. The roller 1210 is installed on the hollow shaft 1262 of the rotating mechanism 126 in the main body 11 and is disposed in the second bearing groove 1116 between the second driving wheel 129 and the vertical wall of the main body 11, so that the second driving wheel 129 is fixed relative to the hollow shaft 1262 in the axial direction. Further, a thrust bearing is provided in the second bearing groove 1116. The roller 1210 is installed on the hollow shaft 1262 and contacts the thrust bearing, preventing the second driving wheel 129 from moving in the axial direction while reducing the frictional force between the rotating mechanism 126 and the second bearing groove 1116 during rotation.

[0185] According to an embodiment of the present disclosure, the rotation axes of the first driving wheel 128, the second guide wheel 116, the third guide wheel 117, the fourth guide wheel 118, and the fifth guide wheel 1222 are perpendicular to the rotation axes of the hollow shaft 1262, the second driving wheel 129, and the first guide wheel 115.

[0186] Figure 24 Schematically shows a three-dimensional view of a flexible joint according to an embodiment of the present disclosure.

[0187] According to an embodiment of the present disclosure, as Figure 1 and Figure 24As shown, the flexible joint 6 includes a starting joint 61, an ending joint 62, and a plurality of intermediate joints 63. The starting joint 61 is coupled to the protective tube 5, and the first swing cable 1220 and the second swing cable 1221 of the transmission mechanism are connected to the starting joint 61 at positions in the first radial direction and the second radial direction that are perpendicular to each other. The ending joint 62 is mounted at the front end of the connecting tube 4. The plurality of intermediate joints 63 are sequentially connected between the starting joint 61 and the ending joint 62, enabling the flexible joint 6 to swing in two mutually perpendicular planes. The first swing cable 1220 and the second swing cable 1221 extend from the starting joint 61 through the intermediate joints 63 and the ending joint 62 and through the connecting tube 4 into the grip portion. Among them, the push clip shaft 22 and the hollow shaft 23 both pass through the flexible joint 6.

[0188] According to an embodiment of the present disclosure, as Figure 24 shown, in order to enable the flexible joint 6 to deflect better, the flexible joint 6 further includes a plurality of auxiliary cables 64, which are spaced between the first swing cable 1220 and the second swing cable 1221, and the auxiliary cables 64 extend from the starting joint 61 through the intermediate joints 63 and are connected to the ending joint 62.

[0189] According to an embodiment of the present disclosure, the auxiliary cable 64 is fixedly connected to the ending joint 62, and the auxiliary cable 64 is not fixedly connected to the starting joint 61.

[0190] In a schematic embodiment, the flexible joint 6 includes four auxiliary cables 64.

[0191] In a schematic embodiment, the flexible joint 6 includes 3 intermediate joints 63.

[0192] According to an embodiment of the present disclosure, as Figure 24 shown, a hollow cylinder 66 is provided at the front end of the starting joint 61, and the protective tube 5 and the flexible joint 6 are connected by a rotating bearing 7. The front ends of the hollow shaft 23 and the push clip shaft 22 pass through the hollow cylinder 66 and are connected to the joint portion. As Figure 6 shown, a circular groove 53 is opened at the rear end of the protective tube 5, and the rotating bearing 7 is fitted in the circular groove 53. Among them, the starting joint 61 extends forward along the axis to form a hollow cylinder 66, and the hollow cylinder 66 is fitted in the rotating bearing 7, enabling the protective tube 5 and the starting joint 61 to achieve rotational connection, and further enabling the clamping head portion 3 and the protective tube 5 to rotate relative to the starting joint 61 around the axis of the starting joint 61. For example, the operator rotates the handwheel 1215 with the thumb, the handwheel 1215 drives the push clip shaft 22 to rotate, the push clip shaft drives the push clip mechanism to rotate, and further drives the joint portion 21 to rotate, and the joint portion 21 drives the clamping head portion and the protective tube 5 to rotate relative to the starting joint 61.

[0193] According to an embodiment of the present disclosure, as Figure 5As shown, the connecting tube 4 includes an outer rod and a hollow inner tube. The outer rod is a thin-walled hollow tube, and a plurality of open long grooves are evenly spaced at the front end of the outer rod. A plurality of bosses 65 extend backward from the rear end of the end joint 62 of the flexible joint 6, and the plurality of bosses 65 are inserted into the plurality of long grooves of the outer rod to closely match the outer rod. The hollow inner rod is nested inside the outer rod.

[0194] In an illustrative embodiment, the number of the long slots may include any one of 2, 4, 6, 8, etc.

[0195] According to an embodiment of the present disclosure, the protective tube 5 is connected to the starting joint 61 of the flexible joint 6 through a rotating bearing 7, the ending joint 62 of the flexible joint 6 is connected to the outer rod, the rear end of the outer rod is connected to the main body 11, and the operating handle 12 is connected to the main body 11. The operating handle 12 can rotate and swing, and the rotation or swing of the operating handle 12 causes the flexible joint 6 to bend in different directions.

[0196] According to the embodiment of the present disclosure, by providing the elastic mechanism and the hollow tube 23, the length of the protection tube and the clamp head can be shortened, thereby improving the control accuracy of the clamp head.

[0197] According to the embodiment of the present disclosure, when working, a first clamp is placed in the clamp head 3 of the pliers, and a plurality of second clamps 35 in a compressed state are placed in the clamp compartment. The clamp push shaft 22 is Figure 4 In this case, the main handle 12 and the auxiliary handle 13 are tightened, and the clamping shaft 22 is pushed and moved backward ( Figure 4 The first stop protrusion 221 of the push-clamp shaft 22 abuts against the bottom 212 of the connecting portion 21, and the push-clamp shaft moves backward through the first stop protrusion 221 and the bottom of the connecting portion 21. The connecting arm 211 of the connecting portion 21 drives the clamp arm 32 to rotate relative to the first pivot 36, so that the pliers are closed and the first clamp set in the clamping portion 321 of the pliers is clamped. In the process of the push-clamp mechanism 34 moving backward with the push-clamp shaft 22, the partition sheet 341 of the push-clamp mechanism 34 touches the second clamp 35 ( Figure 5 When the second clip 35 on the right side is moved, the cantilever 343 will move upward due to its elasticity. The second clip 35 will stop because the force generated by the rear wall 3342 of the positioning groove 334 in the half body 33 to limit its backward movement is greater than the friction force of the partition 341 on the second clip 35. That is, it will not separate from the positioning groove 334 and move backward with the pushing and clamping mechanism 34. In this way, the rear end of the second clip 35 is separated from the base 342 of the pushing and clamping mechanism 34.

[0198] After the pliers are completely closed, release the auxiliary handle 12. The push clip shaft 22 will move forward under the elastic force of the first elastic member 112, and the moving length is equal to the sum of the distance between two adjacent second clips 35 and the length required for the pliers to open.

[0199] In the first moving stage, when the push clip shaft 22 moves forward ( Figure 4 moves from right to left in the figure), it drives the push clip mechanism 34 to move forward. At the same time, the hollow shaft 23 moves forward under the action of the second elastic member 113 and pushes the pliers open through the connecting portion 21.

[0200] During the first moving stage, when the push clip mechanism 34 moves forward, since the cantilever 343 is still in an elastically deformed state, the frictional force between the push clip mechanism 34 and the protruding portion 352 of the next second clip 35 in contact with it is less than the force that the positioning groove 334 in the half body 33 restricts the forward movement of the next second clip 35. Therefore, the next second clip 35 in the clip bin portion remains stationary. As the push clip mechanism 34 continues to move towards the pliers, the partition 341 of the push clip mechanism 34 gradually moves between the two second clips and abuts against the rear part of the previous second clip ( Figure 5 the second clip 35 on the left side in the figure). At the same time, the engaging groove 3421 of the base abuts against the rear part of the next second clip 35 in the clip bin portion. That is to say, in the first moving stage, neither of the two second clips moves.

[0201] After that, enter the second moving stage. The partition 341 of the push clip mechanism 34 continues to apply a thrust to the previous second clip. When the thrust that the partition 341 of the push clip mechanism 34 pushes the previous second clip is greater than the frictional force between the protruding portion 352 of the previous second clip 35 and the positioning groove 334 of the connecting portion, the protruding portion of the previous second clip 35 disengages from the positioning groove 334 and moves forward together with the push clip shaft 22 until it moves to the front end of the pliers and enters the clamping portion 321. During this process, among the two adjacent second clips 35, the next second clip 35 will move to the position where the previous second clip 35 was located before under the drive of the base.

[0202] According to an embodiment of the present disclosure, when the clip - firing forceps with multi - degree - of - freedom in the jaw head 3 are in use, the main handle 121 can swing around the swing pivot 127. The main handle 121 drives the first driving wheel 128 to rotate, thereby driving the flexible joint 6 to deflect through the second swing cable 1221 to achieve the swing of the forceps in the second plane. The rotating mechanism 126 can rotate around the hollow shaft 1262, and the hollow shaft 1262 drives the second driving wheel 129 to rotate, thereby driving the flexible joint 6 through the first swing cable 1220 to achieve the swing of the forceps in the first plane. While the operating handle 12 rotates and / or swings, the operator can also drive the rotating wheel 114 to rotate through the handwheel 1215, which drives the clip - pushing shaft 22 to rotate, thereby achieving the self - rotation of the forceps relative to the flexible joint 6.

[0203] The clip - firing forceps provided by the present disclosure, by setting a multi - degree - of - freedom structure, can enable the forceps to swing in the first plane and the second plane and rotate relative to the main body part, so as to obtain a larger operating space and make the operation more flexible.

[0204] It should be noted that the structure with multi - degrees of freedom can also be used on other surgical instruments.

[0205] So far, the embodiments of the present disclosure have been described in detail with reference to the drawings. It should be noted that in the drawings or the text of the specification, the implementation manners that are not illustrated or described are all forms known to those of ordinary skill in the art and have not been described in detail. In addition, the definitions of the above - mentioned various elements and methods are not limited to the specific structures, shapes or manners mentioned in the embodiments, and those of ordinary skill in the art can make simple changes or substitutions to them.

[0206] Based on the above description, those skilled in the art should have a clear understanding of the clip - firing forceps provided by the present disclosure.

[0207] In summary, the present disclosure provides a clip - firing forceps, which realizes continuous clamping of ligating clips, and can combine the movement of the second clip in the clip cartridge part with the opening and closing movement of the forceps, reducing the operation time of the clamping personnel.

[0208] It should also be noted that the directional terms mentioned in the embodiments, such as "up", "down", "front", "back", "left", "right", etc., are only references to the directions in the drawings and are not used to limit the protection scope of the present disclosure. Throughout the drawings, the same elements are represented by the same or similar reference numerals. When it may cause confusion in the understanding of the present disclosure, the conventional structures or configurations will be omitted, and the shapes and sizes of the components in the drawings do not reflect the actual sizes and proportions, but only illustrate the content of the embodiments of the present disclosure.

[0209] Unless otherwise noted to the contrary, the numerical parameters set forth in this specification and the appended claims are approximations that can vary depending upon the desired properties sought to be obtained by the present disclosure. In particular, all numerical values that denote contents of components, reaction conditions, and the like used in the specification and claims should be understood to be modified in all instances by the term "about." In general, such expression means including a variation of ±10% in some embodiments, ±5% in some embodiments, ±1% in some embodiments, and ±0.5% in some embodiments from a specific amount.

[0210] As used in the specification and claims, ordinal numbers such as "first," "second," "third," etc. are used to modify corresponding elements and do not in and of themselves indicate any ordinal relationship of the elements, nor do they represent an order of one element with respect to another element or an order in a manufacturing process. The use of such ordinal numbers is only for the purpose of clearly distinguishing one element having a certain name from another element having the same name.

[0211] In addition, unless specifically described or steps must occur in sequence, the order of the above steps is not limited to that listed above and can be varied or rearranged according to the desired design. Also, based on considerations of design and reliability, the above embodiments can be used in combination with each other or with other embodiments, that is, the technical features in different embodiments can be freely combined to form more embodiments.

[0212] The above specific embodiments further elaborate on the purpose, technical solutions, and beneficial effects of the present disclosure. It should be understood that the above are only specific embodiments of the present disclosure and are not used to limit the present disclosure. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present disclosure should be included within the protection scope of the present disclosure.

Claims

1. A continuous clip applicator, comprising: A grip portion; A drive mechanism installed within the grip portion; A coupling portion that reciprocates linearly under the drive of the drive mechanism; A connecting tube, the rear end of which is installed on the grip portion; A clamp head portion, comprising: Pliers, including two cross - arranged and pivotally mounted on the front end of the connecting tube clamp arms, the coupling portion being connected to the rear ends of the two clamp arms, and each clamp arm including a clamping portion adapted to clamp a first clip; A clip magazine portion configured to extend from the outside of the connecting tube to the inside of the connecting tube through the space defined by the pliers, and a plurality of second clips are movably accommodated in sequence in the accommodation channel defined by the clip magazine portion. The clip magazine portion includes two half - bodies that are snapped together with each other, and each half - body includes: A flat portion provided with a first through - hole thereon; Two vertical walls extending perpendicular to the flat portion from both sides in the length direction of the flat portion, and at least two pairs of positioning grooves extending in the transverse direction are provided on the two vertical walls, and the positioning grooves are adapted to cooperate with the clamping protrusions on the clamping arms of the clip; A clip pushing mechanism, comprising: A separator inserted between two adjacent second clips and configured to push the front - located one of the two second clips towards the clamping portion; A base configured to reciprocate linearly under the drive of the coupling portion, and the rear end of the rearmost second clip abuts against the base; A cantilever detachably installed on the base and extending forward from the base, and the separator extends obliquely from the cantilever to between two adjacent second clips.

2. The sequential clip applicator according to claim 1, wherein, The coupling portion includes: A substantially U - shaped connecting portion, the two connecting arms of which are respectively combined with the rear parts of the clamp arms of the pliers to drive the pliers to open or close, and the base of the clip pushing mechanism is located between the two connecting arms; A clip pushing shaft passing through the bottom of the connecting portion and connected to the base of the clip pushing mechanism, the clip pushing shaft being configured to drive the clip pushing mechanism to reciprocate linearly and pull the connecting portion backward to close the pliers; and A hollow shaft slidably sleeved outside the clip pushing shaft and inside the connecting tube, the front end of the hollow shaft abuts against the bottom of the connecting portion on the side opposite to the clip pushing mechanism to push the connecting portion forward and open the pliers.

3. The sequential clip applicator according to claim 2, wherein, The front wall of the positioning groove is arranged to be inclined to allow the clamping protrusion to disengage from the positioning groove when the second clip is pushed forward, and the rear wall of the positioning groove is arranged to be parallel to the transverse direction to prevent the clamping protrusion from disengaging from the positioning groove when the second clip is pulled backward.

4. The sequential clip applicator according to claim 2, wherein, On the flat portion of the half - body adjacent to the cantilever, a rib protruding inward is provided, and the rear end of the rib is formed as a slope, and the slope cooperates with the separator to guide the separator to move towards between the two second clips, so that the rib holds the separator between the two second clips during the forward movement of the clip pushing mechanism.

5. The sequential clip applicator according to claim 2, wherein, A guiding groove opening towards the rear is provided on the flat part, and the base part is partially received in the guiding groove to linearly reciprocate in the guiding groove.

6. The sequential clip applicator according to claim 2, wherein, Each clamping arm further includes a driving part adapted to drive the clamping part to act, and the driving part includes: A first extension arm extending rearward from the rear end of the clamping part. A first convex part protruding inward is provided at the rear end of the first extension arm, and a first pivot hole is provided on the first convex part; and A second extension arm extending rearward parallel to the first extension arm from the rear end of the clamping part. The length of the second extension arm is greater than that of the first extension arm. A second convex part protruding inward is provided at the rear end of the second extension arm. A second pivot hole aligned with the first pivot hole and an elongated clamping hole located behind the second pivot hole are provided on the second convex part; The pliers and the cartridge part are connected to the front end of the connecting pipe by a first pivot passing through the first pivot hole, the second pivot hole and the first through hole, and the second convex part is connected to the connecting arm by a second pivot passing through the clamping hole and the connecting arm.

7. The sequential clip applicator according to claim 1, wherein, A coupling groove is provided on the side of the base where the cantilever is located, and the cantilever is detachably connected to the coupling groove by a screw thread. An installation hole is provided at the part of the connecting pipe opposite to the screw.

8. The sequential clip applicator according to claim 1, wherein, A groove adapted to partially receive the rear part of the second clip is provided on the inner side of the cantilever.

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