A continuous feed clip applier

Abstract

The application designs a continuous firing clip applier, relates to the technical field of medical devices, and comprises a bullet loading mechanism and a clip applying mechanism. The ligation clip is placed in the bullet loader, is extruded into a semi-closed state by the side pressing plate, and is pressed into the bullet magazine by the upper pressing plate and the pushing element. The upper sleeve and the lower sleeve are buckled to assemble the bullet magazine assembly. The bullet magazine assembly is inserted into the outer extension pipe and can rotate 360 degrees with the hand wheel. The trigger drives the outer extension pipe to move, the outer extension pipe extrudes the clip head in the bullet magazine assembly to make the clip head close, and the ligation clip is buckled. The outer extension pipe is reset by the first spring, and the clip head is reset by the U-shaped spring. The shift fork drives the bullet changer to move, thereby driving the pushing element to move forward in the bullet magazine. The pushing element pushes the next ligation clip to the position of the previous ligation clip, realizes rapid reloading, and drives the counting plate to move at the same time of reloading. The numbers on the counting plate correspond to the number of remaining ligation clips in the bullet magazine, and synchronous display is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, and in particular to a continuous firing clip applier. BACKGROUND

[0002] Minimally invasive surgery brings great benefits to doctors and patients due to its small incision, light pain, less bleeding, fast recovery and short hospitalization time. At the same time, the small operation space, limited visual field and instrument activity range also put higher requirements on surgical instruments.

[0003] The traditional single firing clip applier can only load one hemostatic clip at a time. After releasing a hemostatic clip during the operation, the doctor needs to withdraw the instrument from the patient's body cavity, reload the hemostatic clip, and then insert the instrument into the patient's body cavity for further operation. For complex operations that require multiple site and multiple vessel clipping, the frequent in-and-out operation mode prolongs the operation time, increases the operation burden and fatigue of the doctor, and increases the risk of patient anesthesia and infection. SUMMARY

[0004] To solve the problem of repeated loading of hemostatic clips, complicated operation, prolonged operation time, increased fatigue of doctors and risk of infection of patients in the prior art, the present application provides a continuous firing clip applier.

[0005] The technical solution adopted by the present application is:

[0006] A continuous firing clip applier, comprising: a cartridge loading mechanism for loading hemostatic clips into a cartridge, and a clip applying mechanism for clamping the hemostatic clips.

[0007] The cartridge loading mechanism comprises:

[0008] A cartridge loader, inside which a cartridge assembly is installed;

[0009] Side pressure plates arranged on both sides of the cartridge loader and above the cartridge loader for extruding the hemostatic clips into a semi-closed state;

[0010] A fixed device arranged above the side pressure plates;

[0011] An upper pressure plate, the bottom of which is inserted into the fixed device, for pressing the hemostatic clips into the cartridge;

[0012] The clip applying mechanism comprises:

[0013] A handle, both sides of which are provided with a second sliding groove extending through the inside and outside of the handle;

[0014] A hand wheel, the outer side of which is provided with a neck recess, and the inside of which is formed with a pin shaft seat and a limiting block, the hand wheel being rotatably connected with the handle through the neck recess;

[0015] A slider is formed with wing plates on both sides, and is connected to the inside of the handle through the wing plates and the second sliding groove;

[0016] A magazine changer is connected to the inside of the handle at one end and extends into the hand wheel at the other end;

[0017] A second spring is sleeved on the outside of the magazine changer, and one end abuts against the slider and the other end abuts against the limiting block;

[0018] A shift fork is movably arranged outside the handle and connected with the wing plate;

[0019] A magazine holder is fixed on the pin shaft seat inside the hand wheel through a pin shaft;

[0020] The magazine assembly comprises:

[0021] A magazine is provided with a propelling element inside;

[0022] A ligature clip is arranged in the gap between the magazine and the propelling element;

[0023] A jaw is rotatably connected to the end of the magazine for buckling the ligature clip;

[0024] A U-shaped spring is installed at the bottom of the magazine and connected with the jaw for resetting the jaw;

[0025] The magazine and the propelling element are provided with inclined plate pushers, the inclined plate pusher of the propelling element is used to push the last ligature clip in the magazine to the position of the previous ligature clip, and the inclined plate pusher of the magazine is used to prevent the pushed ligature clip from retreating.

[0026] Further, the magazine assembly further comprises:

[0027] A lower sleeve is provided with the magazine inside, and the magazine is a U-shaped groove structure;

[0028] An upper sleeve is buckled with the lower sleeve to fix the magazine, the propelling element and the ligature clip in the combined structure of the upper sleeve and the lower sleeve.

[0029] Further, a second connecting hole is formed at the end of the magazine away from the jaw;

[0030] A first connecting hole is formed at the end of the propelling element away from the jaw;

[0031] A first clamping head is formed at the end of the magazine holder away from the pin shaft seat;

[0032] A second clamping head is formed at the end of the magazine changer away from the slider;

[0033] The first clamping head is connected with the second connecting hole, and the second clamping head is connected with the first connecting hole, so that the cartridge assembly is connected with the clip applying mechanism.

[0034] Further, a ball head is formed on one end of the slider adjacent to the cartridge changer.

[0035] A ball head groove is formed on the slider.

[0036] The ball head is installed in the ball head groove to realize the connection between the cartridge changer and the slider.

[0037] Further, a cartridge slot is formed in the center of the cartridge loader along the length direction, and the cartridge is installed in the cartridge slot.

[0038] Ligature clamp clamping grooves and stop blocks are arranged on both sides of the cartridge slot, and the ligature clamp clamping grooves and the stop blocks are arranged at equal intervals along the length direction of the cartridge loader.

[0039] The ligature clamp clamping grooves and the stop blocks are arranged alternately.

[0040] Further, a through hole is formed on the fixator, and the bottom of the upper pressing plate is inserted into the through hole.

[0041] Ducking fingers are arranged on both sides of the bottom of the fixator, and the ducking fingers are arranged at equal intervals along the length direction of the fixator.

[0042] A pushing piece and an upper sleeve are clamped on the ducking finger.

[0043] Further, the cartridge loading mechanism further comprises:

[0044] A lower shell, in which the cartridge loader is installed;

[0045] An upper shell, in which a fixator clamping groove is formed for installing the fixator;

[0046] A buckle is arranged at both ends of the upper shell and the lower shell, and is used for buckling the upper shell and the lower shell into one whole.

[0047] Further, the clip applying mechanism further comprises:

[0048] A trigger is rotationally connected with the handle, and a hoof part is formed on one end of the trigger inside the handle.

[0049] An outer extension pipe seat is sleeved on the outside of the second spring, one end of the outer extension pipe seat abuts on the hoof part and is formed with a thrust disc.

[0050] An outer extension pipe is connected with one end of the outer extension pipe seat away from the thrust disc and is arranged in the inside of the hand wheel.

[0051] The first spring is sleeved on the outside of the extension tube seat, with one end abutting against the thrust plate and the other end abutting against the handwheel;

[0052] The magazine changer is inserted into the hoof section, and the magazine catcher with a first catch head is installed in the extension tube.

[0053] Furthermore, the clamping mechanism also includes a counting component, which comprises:

[0054] A counting board is installed inside the handle. Numbers are engraved on its top and multiple step grooves corresponding to the numbers on the top are machined on its bottom.

[0055] A backstop plate is located below the counting plate to prevent the counting plate from retracting.

[0056] A ratchet, mounted on top of the slider and located below the counting plate, is used to push the counting plate to move;

[0057] A torsion spring is installed inside the ratchet tooth;

[0058] The anti-reverse plate is parallel to the ratchet, and the top of the handle has an observation port for observing the numbers on the counting plate.

[0059] Furthermore, a first groove is provided at the top of the inside of the handle, and a first notch is provided in the first groove near the mounting position of the anti-reverse plate, and a second notch is provided behind the first notch.

[0060] The counting plate is installed in the first slide groove, and the anti-reverse plate is inserted into the stepping groove through the first notch;

[0061] As the ratchet moves with the slider to the second notch, the torsion spring springs the ratchet up, so that the end of the ratchet away from the slider passes through the second notch and inserts into another step groove, thereby pushing the counting plate forward by one step groove width.

[0062] The beneficial effects of this invention are:

[0063] 1. The ligature clip is placed in the magazine in its natural state. After being pressed into place by the side pressure plate, the ligature clip is squeezed from its natural state to a semi-closed state. Then, the upper pressure plate presses the pusher and the semi-closed ligature clip into the magazine. The upper and lower sleeves are fastened together to assemble the magazine assembly. The magazine assembly can be removed by removing the buckle and opening the loading mechanism. The loading process is simple and efficient.

[0064] 2. The trigger drives the extension tube seat to move forward, compressing the first spring. The movement of the extension tube seat synchronously drives the extension tube to move forward, which in turn squeezes the clamp head to close it. The U-shaped spring deforms, and the two ends of the ligation clamp are fastened together. The first spring pushes the extension tube seat and the extension tube back to their initial positions, and the U-shaped spring returns the clamp head to its open state. The clamping operation is simple, and the automatic reset ensures the feasibility of continuous operation.

[0065] 3. The slider is moved by the fork, and the slider pushes the magazine changer forward. The second spring is compressed, and the magazine changer drives the pusher to move forward in the magazine. The pusher uses the inclined plate to push the next ligation clip to the position of the previous ligation clip, realizing rapid magazine change and saving surgical time. After the fork is released, the magazine changer and the pusher automatically reset.

[0066] 4. By installing ratchet on the slider, the ratchet moves forward synchronously when the slider moves. The ratchet pushes the counter forward by a step groove distance to display a new number. The anti-reverse plate is inserted into the step groove of the counter to prevent the counter from retracting. While reloading, the counter is also driven to move, so that the number on the counter corresponds to the number of remaining ligatures inside the magazine, thus achieving synchronous display.

[0067] 5. The handwheel can rotate 360° around its own axis, and the magazine changer, extension tube seat, extension tube, magazine catch and magazine assembly can also rotate with the handwheel, thus enabling operation within a 360° range during the operation. Attached Figure Description

[0068] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0069] Figure 1 This is an exploded view of the three-dimensional structure of the loading mechanism in this invention.

[0070] Figure 2 This is a schematic diagram showing the assembly relationship of the upper pressure plate, the retainer, the upper sleeve, and the propulsion component in the loading mechanism.

[0071] Figure 3 This is a schematic diagram showing the assembly relationship of the loader, magazine, lower sleeve, and lower housing in the loading mechanism.

[0072] Figure 4 This is a schematic diagram showing the assembly relationship of the lower housing, loader, magazine, lashing clip, and side pressure plate in the loading mechanism.

[0073] Figure 5 for Figure 4 A magnified view of a portion of point A in the middle.

[0074] Figure 6 A three-dimensional structural diagram of the completed loading mechanism.

[0075] Figure 7 An exploded view of the three-dimensional structure of the magazine assembly in the loading mechanism.

[0076] Figure 8 This is a schematic diagram showing the assembly relationship of the feed component, magazine, caliper head, and U-shaped spring in the magazine assembly.

[0077] Figure 9 for Figure 8 A magnified view of a portion of point B in the middle.

[0078] Figure 10 for Figure 8 A magnified view of a portion of point C.

[0079] Figure 11 This is a schematic diagram showing the assembly relationship between the propulsion component and the ligature clip in the magazine assembly.

[0080] Figure 12 for Figure 11 A magnified view of a portion of point E in the middle.

[0081] Figure 13 This is a three-dimensional structural diagram of the clamping mechanism in this invention.

[0082] Figure 14 This is a schematic diagram showing the assembly relationship of the extension tube, handwheel, handle, trigger, extension tube seat, and first spring in the clamping mechanism.

[0083] Figure 15 This is a schematic diagram showing the assembly relationship of the handwheel, handle, trigger, magazine catch, magazine changer, second spring, and slider in the clamping mechanism.

[0084] Figure 16 This is a schematic diagram showing the assembly relationship between the handle and the counting component in the clamping mechanism.

[0085] Figure 17 for Figure 16 A magnified view of a portion of point D.

[0086] Figure 18 This is a three-dimensional structural diagram of the handwheel in the clamping mechanism.

[0087] Figure 19 This is a three-dimensional structural diagram of the magazine changer in the clamping mechanism.

[0088] Figure 20 This is a schematic diagram showing the assembly relationship of the ratchet, torsion spring, and slider in the clamping mechanism.

[0089] Marked in the image:

[0090] 10. Loading mechanism;

[0091] 11. Upper pressure plate; 111. Pressure block;

[0092] 12. Fixture; 121. Fastener finger;

[0093] 13. Upper housing; 131. Fixture slot;

[0094] 14. Side pressure plate; 141. Extrusion block;

[0095] 15. Magazine assembly; 151. Upper sleeve; 152. Propeller; 1521. First connecting hole; 1522. Slant push finger; 153. Ligating clip; 1531. Cylindrical pin; 154. Magazine; 1541. Second connecting hole; 155. Lower sleeve; 156. Pliers head; 1561. Placement slot; 157. U-shaped spring;

[0096] 16. Loader; 161. Clip slot; 162. Magazine slot; 163. Stop block;

[0097] 17. Lower shell; 171. Sleeve groove;

[0098] 18. Buckle;

[0099] 200. Clamping mechanism;

[0100] 201. Outer tube; 2011. Fixing hole;

[0101] 202. Handwheel; 2021. Pin seat; 2022. Limit block; 2023. Neck groove;

[0102] 203. Magazine clip; 2031. First magazine release;

[0103] 204. Outer tube seat; 2041. Fixing block; 2042. Thrust plate;

[0104] 205. The first spring;

[0105] 206. Trigger; 2061. Sheep's hoof;

[0106] 207. Handle; 2071. Observation port; 2072. First slide groove; 20721. First notch; 20722. Second notch; 2073. Suspension block; 2074. Second slide groove;

[0107] 208. Magazine changer; 2081. Second chuck; 2082. Waist hole; 2083. Ball head;

[0108] 209. Pin;

[0109] 210. The second spring;

[0110] 211. Counting assembly; 2111. Counting plate; 21111. Stepping groove; 2112. Anti-reverse plate; 2113. Ratchet; 2114. Torsion spring;

[0111] 212, slider; 2121, spherical groove; 2122, wing plate;

[0112] 213. Shift fork. Detailed Implementation

[0113] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0114] The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, these are merely examples and are not intended to limit the present invention.

[0115] The embodiments of the invention will now be described in detail with reference to the accompanying drawings.

[0116] This embodiment provides a rapid-fire clamp to overcome the problems existing in the prior art. Its working principle is that multiple ligation clips 153 are preloaded in the magazine 154. After one clamping is completed, there is no need to reload the ligation clips 153. Only a magazine change operation is required and then firing can realize the rapid-fire clamping of the ligation clips 153, thereby shortening the operation time, reducing the workload of doctors, and reducing the risk of anesthesia and infection for patients.

[0117] A type of automatic firing clamp mainly consists of a loading mechanism 10 and a clamping mechanism 200. The loading mechanism 10 is used to load multiple clamps 153 into a magazine 154, while the clamping mechanism 200 is used to fire the clamps 153 in the magazine 154 continuously. Figures 1 to 12 This is a schematic diagram of the structure of the loading mechanism 10. Figures 13 to 20 This is a schematic diagram of the internal structure of the clamping mechanism 200.

[0118] See Figures 1 to 2The loading mechanism 10 mainly includes an upper pressure plate 11, a retainer 12, an upper housing 13, two side pressure plates 14, a magazine assembly 15, a loader 16, a lower housing 17, and two latches 18. The magazine assembly 15 has the following structural components: Figure 7 As shown, the magazine assembly 15 includes an upper sleeve 151, a pusher 152, multiple ligature clips 153, a magazine 154, a lower sleeve 155, two clamps 156, and a U-shaped spring 157. The magazine 154 has a U-shaped groove structure, with the multiple ligature clips 153 placed inside the magazine 154, and the pusher 152 installed inside the magazine 154 and located above the ligature clips 153.

[0119] The upper sleeve 151 and the lower sleeve 155 are interlocked to fix the magazine 154, the pusher 152, and multiple ligature clips 153 inside the combined structure, forming a tubular structure. Two clamp heads 156 are rotatably connected to one end of the magazine 154. A U-shaped spring 157 is located at the bottom of the end of the magazine 154 where the clamp heads 156 are installed, and is connected to the two clamp heads 156 respectively.

[0120] Depend on Figure 1 and Figure 2 It can be seen that multiple pressure blocks 111 are formed at equal intervals on the bottom of the upper pressure plate 11. The ends of the pressure blocks 111 are machined into arc shapes. The fixture 12 has through holes corresponding to the positions of the pressure blocks 111. The size of the through holes matches the size of the pressure blocks 111. The upper pressure plate 11 is movably inserted into the fixture 12. On both sides of the through holes on the fixture 12, there are fastening fingers 121 respectively. The fastening fingers 121 are located at the bottom of the fixture 12. The two fastening fingers 121 are elastic and are used to fix the upper sleeve 151 and the pusher 152.

[0121] The pusher 152 is placed inside the upper sleeve 151, with the upper sleeve 151 positioned above the pusher 152. The fastening fingers 121 fasten the two sides of the pusher 152, thereby fixing the upper sleeve 151 and the pusher 152 to the bottom of the retainer 12. A retainer slot 131 is provided on the top of the upper housing 13, extending through the upper and lower surfaces of the upper housing 13. The retainer 12 is installed within the retainer slot 131, while the upper sleeve 151 and the pusher 152 are located below the upper housing 13.

[0122] Combination Figure 1 and Figure 3 It can be seen that a sleeve groove 171 is machined inside the lower housing 17, the lower sleeve 155 is installed in the sleeve groove 171, the magazine 154 is placed inside the lower sleeve 155 and located above the lower sleeve 155, and the loader 16 is also installed inside the lower housing 17 and located above the magazine 154.

[0123] A magazine well 162 is provided at the center of the loader 16, extending to both ends along the length of the loader 16. A magazine 154 is installed in the magazine well 162. A ligator clip slot 161 is provided on both sides of the magazine well 162 along the width of the loader 16, and a stop block 163 is also formed on both sides of the magazine well 162. The ligator clip slot 161 is used to hold the ligator clip 153, and the stop block 163 is used to restrict the movement of the ligator clip 153 after it is squeezed into a semi-closed state by the side pressure plate 14. The ligator clip slots 161 and the stop blocks 163 are arranged alternately, and multiple ligator clip slots 161 and stop blocks 163 are arranged in an equally spaced array along the length of the loader 16.

[0124] Reference Figure 4 and Figure 5 Two side pressure plates 14 are installed on both sides of the lower housing 17 and located above the loader 16. Cylindrical pins 1531 are formed at both ends of the ligator 153, and these pins 1531 engage with the ligator slots 161 of the loader 16. Multiple compression blocks 141 are formed at the ends of the side pressure plates 14, with the positions of the compression blocks 141 corresponding to the positions of the ligator slots 161, and the compression blocks 141 abut against the cylindrical pins 1531 of the ligator 153. Then, the upper housing 13 is joined to the lower housing 17, and the two ends are fastened with buckles 18 to complete the assembly. Figure 6 The loading mechanism 10 shown.

[0125] Combination Figures 1 to 6 The working principle of the loading mechanism 10 is explained as follows:

[0126] First, the lower sleeve 155 and magazine 154 are installed inside the lower housing 17. The loader 16 is installed above the magazine 154. The retainer 12 is installed in the retainer slot 131 of the upper housing 13. The upper pressure plate 11 is inserted into the retainer 12. The upper sleeve 151 and the pusher 152 are engaged with the fastening finger 121 at the bottom of the retainer 12. Then, the ligating clip 153 is installed in the ligating clip slot 161 of the loader 16. Two side pressure plates 14 are placed on both sides of the loader 16. Finally, the upper housing 13 is joined to the lower housing 17, and the upper clips 18 are fastened to both ends of the housing.

[0127] Simultaneously press the two side pressure plates 14 on both sides of the loader 16. The squeezing blocks 141 at the ends of the two side pressure plates 14 push the cylindrical pin 1531 of the ligation clip 153 so that the two ends of the ligation clip 153 are close to each other. The cylindrical pin 1531 slides in the ligation clip slot 161. When the ends of the side pressure plates 14 abut against the stop block 163 of the loader 16 and cannot move further, it indicates that the two side pressure plates 14 have been pressed into place, and the ligation clip 153 changes from the natural state to the semi-closed state.

[0128] Finally, press the upper pressure plate 11 downwards. The end of the pressure block 111 of the upper pressure plate 11 abuts against the upper sleeve 151 and presses the upper sleeve 151 and the pusher 152 from the retainer 12 into the loader 16. The downward-moving pusher 152 simultaneously presses the semi-closed ligature clip 153 into the magazine 154. The upper sleeve 151 and the lower sleeve 155 are interlocked to fix the magazine 154, ligature clip 153 and pusher 152 inside, completing the loading. Releasing the buckle 18 allows the loading mechanism 10 to be disassembled and the magazine assembly 15 to be taken out.

[0129] The assembly relationship of the various parts of magazine assembly 15 is as follows: Figures 8 to 12 As shown in the figure, the magazine 154 has a U-shaped groove structure. The pusher 152 is installed inside the magazine 154, and the ligation clip 153 is made of biodegradable material and is placed in the gap between the pusher 152 and the magazine 154. Both the pusher 152 and the magazine 154 have several inclined push fingers 1522 machined on them, and the inclined push fingers 1522 of the pusher 152 and the magazine 154 are located on the same side. The positions of the inclined push fingers 1522 and the ligation clips 153 correspond one-to-one. The inclined push fingers 1522 of the pusher 152 are used to abut against the cylindrical pin 1531 of the ligation clip 153, pushing the subsequent ligation clip 153 to the position of the previous ligation clip 153. The inclined push fingers 1522 of the magazine 154 are used to prevent the ligation clips 153 pushed forward from retracting when the pusher 152 resets.

[0130] The rear end of the pusher 152 has a first connecting hole 1521, and the rear end of the magazine 154 has a second connecting hole 1541, for fixing the magazine assembly 15 in the clamping mechanism 200. The head of the magazine 154 is rotatably connected to two clamps 156, the end of each clamp 156 is engaged with a U-shaped spring 157, and the U-shaped spring 157 is installed at the bottom of the magazine 154.

[0131] The two clamp heads 156 have a placement groove 1561 machined at the end away from the U-shaped spring 157. The size of the placement groove 1561 matches the size of the cylindrical pin 1531 at the end of the ligation clamp 153.

[0132] The ligation clip 153, pushed out of the magazine 154, gradually returns to its natural state until the cylindrical pin 1531 at its end engages in the placement slot 1561. When the two clamp heads 156 are subjected to external force, they close, fastening the two ends of the ligation clip 153 together. The U-shaped spring 157 deforms and generates elastic force. After the external force is removed, the U-shaped spring 157 releases the elastic force, returning the two clamp heads 156 to the open state.

[0133] The magazine assembly 15 is installed in the clamping mechanism 200 with its two clamps 156 facing outwards. The clamping mechanism 200 is constructed as follows: Figures 13 to 20As shown. The clamping mechanism 200 mainly consists of an extension tube 201, a handwheel 202, a magazine catch 203, an extension tube seat 204, a first spring 205, a trigger 206, a handle 207, a magazine changer 208, a second spring 210, a counting component 211, a slider 212, and a shift fork 213. Combined with... Figure 18 It can be seen that the handwheel 202 has a neck groove 2023 on its outer side, the handle 207 is engaged in the neck groove 2023 of the handwheel 202, and the handwheel 202 can rotate 360° along its own axis.

[0134] One end of the magazine catch 203 is provided with a first catch head 2031, and the other end is fixed to a pin seat 2021 inside the handwheel 202 by a pin 209. The pin 209 passes through the waist hole 2082 of the magazine changer 208, and one end of the magazine changer 208 is formed with a second catch head 2081. The first connecting hole 1521 of the push member 152 in the magazine assembly 15 engages with the second catch head 2081 of the magazine changer 208, and the second connecting hole 1541 of the magazine 154 in the magazine assembly 15 engages with the first catch head 2031 of the magazine catch 203.

[0135] The magazine catch 203 is fixed to the handwheel 202 by the pin 209, thus ensuring that the magazine 154 does not move. The movement of the magazine changer 208 drives the pusher 152 to move, and the pusher 152 uses the inclined push finger 1522 to abut against the cylindrical pin 1531 of the ligation clip 153, thereby pushing the ligation clip 153 forward.

[0136] The trigger 206 is rotatably connected to the handle 207. One end of the trigger 206 has a hoof-shaped portion 2061, which is located inside the handle 207. The reloading device 208 passes through the hoof-shaped portion 2061, and the other end away from the second latch 2081 has a ball head 2083, which is installed in a spherical groove 2121 on the slider 212. The slider 212 is slidably connected to the second slide groove 2074 of the handle 207 via wing plates 2122 on both sides. The wing plates 2122 on both sides extend outward to the outside of the handle 207 and are fixedly connected to a fork 213 on the outside of the handle 207. A second spring 210 is sleeved on the outside of the reloading device 208. One end of the second spring 210 abuts against the slider 212, and the other end abuts against a limiting block 2022 inside the handwheel 202.

[0137] By moving the fork 213 outside the handle 207, the slider 212 is simultaneously driven to slide within the second groove 2074. The slider 212 pushes the magazine changer 208 forward, compressing the second spring 210 and giving it elasticity. The magazine changer 208 then drives the pusher 152 forward within the magazine 154. The pusher 152 uses the inclined push finger 1522 to push the next ligation clip 153 forward to the position of the previous ligation clip 153. After releasing the fork 213, the second spring 210 releases its elasticity, pushing the slider 212 back to its initial position, thereby resetting the magazine changer 208 and the pusher 152.

[0138] An extension tube seat 204 is fitted around the outer side of the magazine catcher 208 and the second spring 210. One end of the extension tube seat 204 abuts against the lug part 2061 of the trigger 206, and the other end has a fixing block 2041 formed thereon. The extension tube 201 is fitted around the outer side of the magazine catcher 203 and the extension tube seat 204. A fixing hole 2011 is provided on the side of the extension tube 201, and the fixing hole 2011 and the fixing block 2041 are engaged with each other.

[0139] A thrust plate 2042 is formed at one end of the extension tube seat 204 adjacent to the hoof portion 2061. A first spring 205 is sleeved on the outside of the extension tube seat 204, with one end abutting against the thrust plate 2042 and the other end abutting against the neck of the handwheel 202. A through groove is also provided on the side of the extension tube seat 204, which is aligned with the waist hole 2082 on the magazine changer 208. A pin 209 passes through the combination structure of the through groove and the waist hole 2082, and fixes the magazine catch 203 to the pin seat 2021 inside the handwheel 202.

[0140] By pulling the trigger 206, the trigger 206 rotates, causing the hoof part 2061 to move forward. The hoof part 2061 simultaneously pushes the extension tube seat 204 forward. The first spring 205 is compressed and has elastic potential energy. The forward movement of the extension tube seat 204 simultaneously drives the extension tube 201 forward. The end of the extension tube 201 away from the handwheel 202 squeezes the two clamp heads 156 in the magazine assembly 15, causing the two clamp heads 156 to move closer to each other, and fastening the ligation clip 153 to the place where the patient needs to be closed. The U-shaped spring 157 connected to the two clamp heads 156 deforms and has elastic potential energy.

[0141] After the trigger 206 is released, the first spring 205 releases its elastic potential energy to push the extension tube seat 204 back to its initial position. The extension tube seat 204 then simultaneously drives the extension tube 201 to reset. The two clamps 156 are no longer squeezed by the extension tube 201. Therefore, the U-shaped spring 157 releases its elastic potential energy to restore the two clamps 156 from the closed state to the open state.

[0142] The clamping mechanism 200 also includes a counting component 211, which is assembled with the handle 207.Figure 16 , Figure 17 , Figure 20 The counting assembly 211 includes a counting plate 2111, a stop plate 2112, a ratchet 2113, and a torsion spring 2114. The top of the counting plate 2111 is machined with numbers to display the number of remaining ligature clips 153 in the magazine 154. The bottom of the counting plate 2111 has step grooves 21111 corresponding to the numbers. A first sliding groove 2072 is provided at the top of the handle 207, and the counting plate 2111 is slidably connected within the first sliding groove 2072. An observation port 2071 is provided at the top of the handle 207 for observing the numbers on the counting plate.

[0143] A suspension block 2073 is formed below the first slide groove 2072 and is connected to the inner wall of the handle 207. The first slide groove 2072 has a first notch 20721 and a second notch 20722 near the suspension block 2073. One end of the anti-reverse plate 2112 is installed on the suspension block 2073, and the other end protrudes upward to form an arc-shaped part that passes through the first notch 20721 and inserts into the stepping groove 21111 at the bottom of the counting plate 2111 to prevent the counting plate 2111 from retracting. The torsion spring 2114 is installed inside the ratchet 2113, which is installed in the groove at the top of the slider 212. Due to space constraints, the ratchet 2113 is pressed into the groove, and the torsion spring 2114 generates elastic force due to deformation. The anti-reverse plate 2112 and the ratchet 2113 are parallel to each other.

[0144] When slider 212 moves forward, it drives ratchet 2113 to move forward synchronously. Simultaneously, the second spring 210 is compressed. When ratchet 2113 moves to the second notch 20722, its range of motion increases. Torsion spring 2114 releases its elasticity, lifting ratchet 2113. The front end of ratchet 2113 passes through the second notch 20722 and inserts into the stepping groove 21111 at the bottom of counting plate 2111. Simultaneously, ratchet 2113 continues to move forward, pushing counting plate 2111 forward by the width of one stepping groove 21111, causing a new number to appear in the observation port. The arc-shaped portion of stop plate 2112 inserts into the stepping groove 21111 from the first notch 20721. As counting plate 2111 moves forward, the arc-shaped portion of stop plate 2112 slides from the previous stepping groove 21111 to the next stepping groove 21111 to prevent counting plate 2111 from retracting.

[0145] When the second spring 210 pushes the slider 212 to reset, it simultaneously drives the ratchet 2113 to move backward, reducing the space for movement. The ratchet 2113 is then pressed back into the groove at the top of the slider 212. The torsion spring 2114 stores elastic potential energy until the next reload is performed, at which point the ratchet 2113 is lifted up. Thus, the number of remaining ligatures 153 in the magazine 154 is simultaneously displayed on the counter 2111.

[0146] The working principle of the rapid-fire clamp is as follows:

[0147] First, install two clamps 156 and a U-shaped spring 157 on the magazine 154. Then, install the lower sleeve 155 and magazine 154 inside the lower housing 17. The loader 16 is installed inside the lower housing 17 and positioned above the magazine 154. The retainer 12 is installed in the retainer slot 131 on the upper housing 13. The upper pressure plate 11 is inserted into the retainer 12, and the upper sleeve 151 and the pusher 152 are engaged at the bottom of the retainer 12. Next, install multiple ligature clips 153 in the ligature clip slot 161 of the loader 16, and place side pressure plates 14 on both sides of the loader 16. Finally, assemble the upper housing 13 and lower housing 17, and fasten the upper housing 13 and lower housing 17 into a single unit by attaching upper clips 18 to both ends of the housing.

[0148] Simultaneously press the two side pressure plates 14 on both sides of the loader 16. The squeezing blocks 141 at the ends of the two side pressure plates 14 push the cylindrical pin 1531 of the ligation clip 153 so that the two ends of the ligation clip 153 come closer to each other. When the ends of the side pressure plates 14 abut against the stop block 163 of the loader 16 and cannot move further, it indicates that the two side pressure plates 14 have been pressed into place, and the ligation clip 153 is squeezed from the natural state to the semi-closed state.

[0149] Finally, press the upper pressure plate 11 down, and the pressure block 111 at the bottom of the upper pressure plate 11 pushes the upper sleeve 151 down, pressing the pusher 152 and the semi-closed ligature 153 into the magazine 154 at the same time. The upper sleeve 151 and the lower sleeve 155 are fastened together to fix the magazine 154, the ligature 153 and the pusher 152 inside. Releasing the buckle 18 can disassemble the loading mechanism 10 and take out the magazine assembly 15.

[0150] Insert the magazine assembly 15 into the extension tube 201 with the two clamps 156 facing outwards until the first connecting hole 1521 of the pusher 152 engages with the second locking head 2081 of the magazine changer 208, and the second connecting hole 1541 of the magazine 154 engages with the first locking head 2031 of the magazine catcher 203.

[0151] Subsequently, the loading operation is performed by shifting the fork 213 located outside the handle 207. The fork 213 simultaneously drives the slider 212 to slide within the second groove 2074. The slider 212 then pushes the magazine changer 208 forward, compressing the second spring 210 and giving it elasticity. The magazine catch 203 is fixed to the handwheel 202 by the pin 209, thereby ensuring that the magazine 154 does not move.

[0152] The magazine changer 208 drives the pusher 152 to move forward within the magazine 154. The pusher 152 uses the inclined pusher finger 1522 to push the next ligature clip 153 to the position of the previous ligature clip 153. The ligature clip 153 located at the head of the magazine 154 is pushed to the clamp head 156 by the pusher 152 and slides along the clamp head 156. During the sliding process, the ligature clip 153 gradually returns to its natural state until the cylindrical pin 1531 of the ligature clip 153 is engaged in the placement groove 1561 at the ends of the two clamp heads 156.

[0153] After the shift fork 213 is released, the second spring 210 releases its elastic force to push the slider 212 back to its initial position, thereby resetting the cartridge changer 208. The cartridge changer 208 then drives the pusher 152 to reset.

[0154] As the fork 213 moves the slider 212 forward, the ratchet 2113 also moves forward synchronously. When the ratchet 2113 moves to the second notch 20722, the torsion spring 2114 releases its elastic force to lift the ratchet 2113. The front end of the ratchet 2113 passes through the second notch 20722 and inserts into the stepping groove 21111 at the bottom of the counting plate 2111.

[0155] Simultaneously, the ratchet 2113 continues to move forward, pushing the counting plate 2111 forward by the width of a stepping groove 21111, causing a new number to appear in the observation port 2071. The arc-shaped portion of the stop plate 2112 inserts into the stepping groove 21111 from the first notch 20721. As the counting plate 2111 moves forward, the arc-shaped portion of the stop plate 2112 slides from the previous stepping groove 21111 to the next stepping groove 21111 to prevent the counting plate 2111 from retracting.

[0156] When the second spring 210 pushes the slider 212 to move backward, it causes the ratchet 2113 to move backward in sync. Due to the reduced space for movement, the ratchet 2113 is pressed back into the groove at the top of the slider 212. The torsion spring 2114 stores elastic potential energy due to deformation until the next reload is performed, which will then lift the ratchet 2113. Thus, the number of remaining ligatures 153 in the magazine 154 is displayed synchronously by the numbers on the counter 2111.

[0157] Then, pulling the trigger 206 at the end away from the hoof part 2061 causes the trigger 206 to rotate, moving the hoof part 2061 forward using leverage. This simultaneously pushes the extension tube seat 204 forward, compressing the first spring 205 and giving it elastic potential energy. The forward movement of the extension tube seat 204 synchronously drives the extension tube 201 forward. The end of the extension tube 201 away from the handwheel 202 then compresses the two clamp heads 156 in the magazine assembly 15, bringing them closer together and securing the ligation clip 153 to the area where closure is needed. The U-shaped spring 157 connected to the two clamp heads 156 deforms, gaining elastic potential energy.

[0158] After the trigger 206 is released, the first spring 205 releases its elastic potential energy to push the extension tube seat 204 back to its initial position. The extension tube seat 204 then simultaneously drives the extension tube 201 to reset. After the extension tube 201 is reset, the jaws 156 are no longer squeezed. The U-shaped spring 157 releases its elastic potential energy to return the two jaws 156 from the closed state to the open state.

[0159] When reloading is required, simply shift the fork 213 located outside the handle 207 again. The fork 213 simultaneously moves the slider 212 and the magazine changer 208 forward, compressing the second spring 210 and giving it elasticity. The magazine changer 208 then moves the pusher 152 forward within the magazine 154. The pusher 152 uses the inclined pusher finger 1522 to push the next ligature clip 153 to the position of the previous ligature clip 153. At the same time, the number of remaining ligature clips 153 displayed on the counter 2111 in the magazine 154 is also updated synchronously.

[0160] The ligature 153 located at the head of the magazine 154 is pushed to the jaw 156 by the pusher 152 and slides along the jaw 156 until the cylindrical pin 1531 of the ligature 153 is engaged in the placement groove 1561 at the ends of the two jaws 156, thereby achieving reloading.

[0161] After the shift fork 213 is released, the second spring 210 releases its elastic force to push the slider 212 back to its initial position, thereby resetting the cartridge changer 208. The cartridge changer 208 then drives the pusher 152 to reset.

[0162] The handwheel 202 can rotate 360°, and the magazine changer 208, the extension tube seat 204, the extension tube 201, the magazine catch 203, and the magazine assembly 15 can also rotate 360° with the handwheel 202, thus enabling operation within a 360° range during the operation.

[0163] The above embodiments are merely a more detailed description of the present invention. Those skilled in the art can still modify the technical solutions in the foregoing embodiments or make equivalent substitutions. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention should be included within the protection scope of this patent.

Claims

1. A rapid-fire clamp, characterized in that, include: The loading mechanism for inserting the ligature clip into the magazine and the clamping mechanism for fastening the ligature clip. The loading mechanism includes: A loader, which houses the magazine assembly; Side pressure plates, located on both sides of the loader and above the loader, are used to compress the ligation clips into a semi-closed state. A retainer is positioned above the side pressure plate; The upper pressure plate, whose bottom is inserted into the retainer, is used to press the ligature clip into the magazine; The clamping mechanism includes: The handle has second sliding grooves on both sides that pass through the inner and outer sides of the handle. The handwheel has a neck groove on the outer side and a pin seat and a limiting block formed inside. The handwheel is rotatably connected to the handle through the neck groove. The slider has wing plates formed on both sides, which are slidably connected to the inside of the handle via the wing plates and the second groove; The cartridge changer has one end connected to the slider inside the handle, and the other end extending into the handwheel; The second spring is sleeved on the outside of the spring changer, with one end abutting against the slider and the other end abutting against the limiting block; A shift fork is movably disposed outside the handle and connected to the wing plate; The magazine catch is fixed to the pin seat inside the handwheel by a pin. The magazine assembly includes: A magazine, wherein a propulsion component is installed inside the magazine; A ligature clip is disposed in the gap between the magazine and the propulsion member; The clamp head is rotatably connected to the end of the magazine and is used for fastening the ligature clip; A U-shaped spring is installed at the bottom of the magazine and connected to the pliers head for resetting the pliers head; The magazine and the propulsion member are provided with inclined push fingers. The inclined push fingers of the propulsion member are used to push the next ligature clip in the magazine to the position of the previous ligature clip. The inclined push fingers of the magazine are used to prevent the ligature clip that has been pushed into place from retracting.

2. The rapid-fire clamp according to claim 1, characterized in that, The magazine assembly also includes: The lower sleeve contains the magazine, which has a U-shaped groove structure. The upper sleeve is fastened to the lower sleeve, fixing the magazine, the propulsion component, and the ligature clip within the combined structure of the upper and lower sleeves.

3. The rapid-fire clamp according to claim 2, characterized in that: The magazine has a second connection hole at the end away from the pliers; The end of the pusher away from the pliers head has a first connecting hole; The magazine catch has a first catch head formed at the end away from the pin seat; The end of the changer away from the slider is formed with a second locking head; The first locking head is connected to the second connecting hole, and the second locking head is connected to the first connecting hole, so that the magazine assembly is connected to the clamping mechanism.

4. The rapid-fire clamp according to claim 1, characterized in that: The end of the changer adjacent to the slider is formed with a ball head; The slider is provided with a ball head groove; The ball head is installed in the ball head groove to connect the changer to the slider.

5. The rapid-fire clamp according to claim 1, characterized in that: The loader has a magazine slot along its length at its center, and the magazine is installed in the magazine slot; The magazine slot is provided with ligating clip slots and stop blocks on both sides, and there are several ligating clip slots and stop blocks arranged at equal intervals along the length direction of the loader. The ligation clip slots and the stop blocks are arranged alternately.

6. The rapid-fire clamp according to claim 1, characterized in that: The fixture has a through hole, and the bottom of the upper pressure plate is inserted into the through hole; The bottom two sides of the fastener are provided with fastening fingers, and several fastening fingers are arranged at equal intervals along the length of the fastener; The fastening finger is engaged with the pusher and the upper sleeve.

7. The rapid-fire clamp according to claim 1, characterized in that, The loading mechanism also includes: The lower housing contains the loader. The upper housing has a retainer slot inside for installing the retainer; Buckles are located at both ends of the upper and lower housings to fasten the upper and lower housings together as a whole.

8. The rapid-fire clamp according to claim 1, characterized in that, The clamping mechanism further includes: A trigger is rotatably connected to the handle, and one end of the trigger located inside the handle is formed with a hoof-shaped part; An extended tube seat is fitted onto the outside of the second spring, with one end abutting against the hoof part and having a thrust plate formed thereon; An extension tube is connected to the end of the extension tube seat away from the thrust plate and passes through the inside of the handwheel; The first spring is sleeved on the outside of the extension tube seat, with one end abutting against the thrust plate and the other end abutting against the handwheel; The magazine changer is inserted into the hoof section, and the magazine catcher with a first catch head is installed in the extension tube.

9. The rapid-fire clamp according to claim 1, characterized in that, The clamping mechanism further includes a counting component, which comprises: A counting board is installed inside the handle. Numbers are engraved on its top and multiple step grooves corresponding to the numbers on the top are machined on its bottom. A backstop plate is located below the counting plate to prevent the counting plate from retracting. A ratchet, mounted on top of the slider and located below the counting plate, is used to push the counting plate to move; A torsion spring is installed inside the ratchet tooth; The anti-reverse plate is parallel to the ratchet, and the top of the handle has an observation port for observing the numbers on the counting plate.

10. The rapid-fire clamp according to claim 9, characterized in that: The top of the handle is provided with a first groove, and a first notch is provided in the first groove near the mounting position of the anti-reverse plate, and a second notch is provided behind the first notch. The counting plate is installed in the first slide groove, and the anti-reverse plate is inserted into the stepping groove through the first notch; As the ratchet moves with the slider to the second notch, the torsion spring springs the ratchet up, so that the end of the ratchet away from the slider passes through the second notch and inserts into another step groove, thereby pushing the counting plate forward by one step groove width.

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