Continuous clip applier

Abstract

The invention relates to the technical field of medical instruments, in particular to a continuous clip applier which comprises a loading mechanism and a clip applying mechanism, a ligation clip is placed in a loading device, the ligation clip is extruded to be in a semi-closed state through a side pressing plate, an upper pressing plate presses a propelling part and the ligation clip into a magazine, and an upper sleeve and a lower sleeve are buckled to achieve assembling of a magazine assembly; the box magazine assembly is inserted into the outward extending pipe and can rotate by 360 degrees along with the hand wheel, the trigger is pulled to drive the outward extending pipe to move, the outward extending pipe extrudes the tong head in the box magazine assembly to enable the tong head to be closed, and buckling of the ligation clamp is achieved. The overhanging tube is reset through the first spring, and the forceps head is reset through the U-shaped spring; the shifting fork drives the bullet changing device to move so as to drive the propelling part to move forwards in the magazine, the propelling part pushes the next ligation clip to the position of the previous ligation clip, rapid bullet feeding and bullet feeding are achieved, meanwhile, the counting plate is driven to move, the number on the counting plate corresponds to the number of the remaining ligation clips in the magazine, and synchronous display is achieved.

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 one 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, a continuous firing clip applier is proposed.

[0005] The technical solution adopted by the present application is: 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; The cartridge loading mechanism comprises: A cartridge loader, inside which a cartridge assembly is installed, the cartridge assembly being provided with a cartridge; 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; A fixer arranged above the side pressure plates; An upper pressure plate inserted into the fixer at the bottom for pressing the hemostatic clips into the cartridge; The clip applying mechanism comprises: A handle, both sides of which are provided with a second sliding groove extending through the inside and outside of the handle; A hand wheel, the outside 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; A sliding block, both sides of which are formed with wing plates, the wing plates being slidably connected with the inside of the handle through the second sliding groove; A cartridge changer, one end of which is connected with the sliding block inside the handle, and the other end of which extends into the hand wheel; A second spring is sleeved outside the cartridge changer, one end of which abuts against the slider, and the other end abuts against the limiting block. A shifting fork is movably arranged outside the handle and connected with the wing plate. A cartridge holder is fixed on the pin shaft seat inside the hand wheel through a pin shaft.

[0006] Further, the cartridge assembly comprises: A lower sleeve is internally provided with the cartridge, the cartridge is internally provided with a pushing member, and the cartridge is a U-shaped groove structure. A ligature clip is arranged in the gap between the cartridge and the pushing member. A jaw is rotationally connected to the end of the cartridge and used for buckling the ligature clip. A U-shaped spring is installed at the bottom of the cartridge and connected with the jaw, and used for resetting the jaw. An upper sleeve is buckled with the lower sleeve, and the cartridge, the pushing member and the ligature clip are fixed in the combined structure of the upper sleeve and the lower sleeve. The cartridge and the pushing member are provided with inclined plate pushers, the inclined plate pusher of the pushing member is used for pushing the last ligature clip in the cartridge to the position of the previous ligature clip, and the inclined plate pusher of the cartridge is used for preventing the pushed ligature clip from retreating.

[0007] Further, a second connecting hole is formed at the end of the cartridge away from the jaw. A first connecting hole is formed at the end of the pushing member away from the jaw. A first clamping head is formed at the end of the cartridge holder away from the pin shaft seat. A second clamping head is formed at the end of the cartridge changer away from the slider. 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.

[0008] Further, a ball head is formed at the end of the cartridge changer adjacent to the slider. A ball head groove is formed on the slider. The ball head is installed in the ball head groove to realize the connection between the cartridge changer and the slider.

[0009] Further, a cartridge groove is formed in the center of the cartridge loader along the length direction, and the cartridge is installed in the cartridge groove. Ligature clip clamping grooves and stop blocks are arranged on both sides of the cartridge groove, and the ligature clip clamping grooves and the stop blocks are equidistantly arrayed along the length direction of the cartridge loader. The ligature clip clamping grooves and the stop blocks are arranged alternately.

[0010] Further, a through hole is formed in the holder, and the bottom of the upper pressing plate is inserted into the through hole; The bottom of the holder is provided with a plurality of buckle fingers arranged at equal intervals along the length direction of the holder; The buckle fingers are connected with a pushing piece and an upper sleeve.

[0011] Further, the bullet loading mechanism further comprises: A lower shell, in which the bullet loader is installed; An upper shell, in which a holder clamping groove is formed, for installing the holder; Buckles are arranged at both ends of the upper shell and the lower shell, for buckling the upper shell and the lower shell into an integral whole.

[0012] Further, the clip applying mechanism further comprises: A trigger, which is rotationally connected with the handle, and one end of the trigger inside the handle is formed with a hoof part; An outer extension pipe seat, which is sleeved outside the second spring, one end of which abuts against the hoof part and is formed with a thrust disc; An outer extension pipe, which is connected with one end of the outer extension pipe seat away from the thrust disc and is arranged inside the hand wheel; A first spring, which is sleeved outside the outer extension pipe seat, one end of which abuts against the thrust disc, and the other end of which abuts against the hand wheel; Wherein, the bullet changer is arranged in the hoof part, and one end of the cartridge clamping piece provided with a first clamping head is installed in the outer extension pipe.

[0013] Further, the clip applying mechanism further comprises a counting assembly, which comprises: A counting plate, which is installed inside the handle, the top of which is engraved with numbers, and the bottom of which is processed with a plurality of step grooves corresponding to the numbers on the top one by one; A retreat stop plate, which is arranged below the counting plate, for preventing the counting plate from retreating; A ratchet, which is installed on the top of the sliding block and below the counting plate, for pushing the counting plate to move; A torsional spring, which is installed in the ratchet; Wherein, the retreat stop plate and the ratchet are parallel to each other, and the top of the handle is provided with an observation port, for observing the numbers on the counting plate.

[0014] Further, the top end of the handle inside is provided with a first sliding groove, the first sliding groove is provided with a first notch adjacent to the installation position of the retreat stop plate, and a second notch is formed behind the first notch; The counting plate is installed in the first sliding groove, and the retreat stop plate is inserted into the step groove through the first notch; When the ratchet follows the slider to move to the second notch, the torsion spring pops up the ratchet to make the end of the ratchet away from the slider pass through the second notch and insert into another step groove, thereby pushing the counting plate forward by one step groove width.

[0015] The beneficial effects of the present application are: 1. The ligature clip is placed in the natural state in the loader, and is pressed into place by the side pressure plate to extrude the ligature clip from the natural state to the semi-closed state, then the pusher and the semi-closed ligature clip are pressed into the inside of the cartridge by the upper pressure plate, the upper sleeve is buckled with the lower sleeve to realize the assembly of the cartridge assembly, and the cartridge assembly can be disassembled by removing the buckle to take out the cartridge assembly, so that the loading process is simple and efficient.

[0016] 2. The outer extension pipe base is moved forward by the trigger, the first spring is compressed, the outer extension pipe base moves synchronously to drive the outer extension pipe to move forward, the outer extension pipe extrudes the clamp head to make the clamp head close, the U-shaped spring is deformed, the two ends of the ligature clip are buckled and closed, the first spring pushes the outer extension pipe base and the outer extension pipe back to the initial position, and the U-shaped spring restores the clamp head to the open state, so that the clamping operation is simple, and the automatic reset ensures the feasibility of the continuous operation.

[0017] 3. The slider is moved by the shift fork, the slider pushes the cartridge changer to move forward, the second spring is compressed, the cartridge changer drives the pusher to move forward in the cartridge, the pusher pushes the next ligature clip to the position of the previous ligature clip by using the inclined plate pusher, so that the cartridge is quickly replaced, the operation time is saved, and the cartridge changer and the pusher are automatically reset after the shift fork is loosened.

[0018] 4. The ratchet is installed on the slider, the slider moves synchronously to drive the ratchet to move forward, the ratchet pushes the counting plate forward by one step groove distance to display the new number, the stop plate is inserted into the step groove of the counting plate to prevent the counting plate from retreating, the counting plate is moved while reloading, the number on the counting plate corresponds to the number of remaining ligature clips in the cartridge, and synchronous display is realized.

[0019] 5. The hand wheel can rotate 360° around its own axis, and the cartridge changer, the outer extension pipe base, the outer extension pipe, the cartridge clamping piece and the cartridge assembly can also rotate with the hand wheel, so that the operation can be performed within a range of 360° during the operation. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0021] Figure 1 The exploded view of the three-dimensional structure of the bullet loading mechanism in the application.

[0022] Figure 2 The assembly relationship diagram of the upper pressing plate, the fixer, the upper sleeve and the pushing piece in the bullet loading mechanism.

[0023] Figure 3 The assembly relationship diagram of the bullet loader, the bullet magazine, the lower sleeve and the lower shell in the bullet loading mechanism.

[0024] Figure 4 The assembly relationship diagram of the lower shell, the bullet loader, the bullet magazine, the ligature clamp and the side pressing plate in the bullet loading mechanism.

[0025] Figure 5 The Figure 4 The local enlarged view of A in the middle.

[0026] Figure 6 The three-dimensional structure diagram of the bullet loading mechanism after assembly.

[0027] Figure 7 The exploded view of the three-dimensional structure of the bullet magazine assembly in the bullet loading mechanism.

[0028] Figure 8 The assembly relationship diagram of the pushing piece, the bullet magazine, the clamp head and the U-shaped spring in the bullet magazine assembly.

[0029] Figure 9 The Figure 8 The local enlarged view of B in the middle.

[0030] Figure 10 The Figure 8 The local enlarged view of C in the middle.

[0031] Figure 11 The assembly relationship diagram of the pushing piece and the ligature clamp in the bullet magazine assembly.

[0032] Figure 12 The Figure 11 The local enlarged view of E in the middle.

[0033] Figure 13 The three-dimensional structure diagram of the clip applying mechanism in the application.

[0034] Figure 14 The assembly relationship diagram of the outer tube, the hand wheel, the handle, the trigger, the outer tube seat and the first spring in the clip applying mechanism.

[0035] Figure 15 The assembly relationship diagram of the hand wheel, the handle, the trigger, the bullet magazine clamping piece, the bullet changer, the second spring and the sliding block in the clip applying mechanism.

[0036] Figure 16The assembly relationship of the handle and the counting component in the clip applying mechanism.

[0037] Figure 17 The assembly relationship of the handle and the counting component in the clip applying mechanism. Figure 16 The local enlarged view at D.

[0038] Figure 18 The three-dimensional structure of the handle in the clip applying mechanism.

[0039] Figure 19 The three-dimensional structure of the clip changer in the clip applying mechanism.

[0040] Figure 20 The assembly relationship of the ratchet, torsional spring, and sliding block in the clip applying mechanism.

[0041] Markings in the figure: 10, the cartridge loading mechanism; 11, the upper pressing plate; 111, the pressing block; 12, the holder; 121, the buckling finger; 13, the upper shell; 131, the holder clamping groove; 14, the side pressing plate; 141, the extrusion block; 15, the cartridge assembly; 151, the upper sleeve; 152, the pusher; 1521, the first connecting hole; 1522, the inclined piece pusher; 153, the ligature clip; 1531, the cylindrical pin; 154, the cartridge; 1541, the second connecting hole; 155, the lower sleeve; 156, the plier head; 1561, the placement groove; 157, the U-shaped spring; 16, the cartridge loader; 161, the ligature clip clamping groove; 162, the cartridge groove; 163, the stop block; 17, the lower shell; 171, the sleeve groove; 18, the buckle; 200, the clip applying mechanism; 201, the outer extension pipe; 2011, the fixing hole; 202, the handle; 2021, the pin shaft seat; 2022, the limiting block; 2023, the neck recess; 203, the cartridge clamping member; 2031, the first clamping head; 204, the outer extension pipe seat; 2041, the fixing block; 2042, the thrust disc; 205, the first spring; 206, the trigger; 2061, the sheep hoof part; 207, the handle; 2071, the observation port; 2072, the first sliding groove; 20721, the first notch; 20722, the second notch; 2073, the suspension block; 2074, the second sliding groove; 208, the cartridge changer; 2081, the second clamping head; 2082, the waist hole; 2083, the ball head part; 209, pin shaft; 210, second spring; 211, counting component; 2111, counting plate; 21111, step groove; 2112, retreat-stop plate; 2113, ratchet; 2114, torsion spring; 212, slider; 2121, spherical groove; 2122, wing plate; 213, yoke. DETAILED DESCRIPTION

[0042] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0043] The following disclosure provides many different embodiments or examples for implementing different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, they are only examples and the purpose is not to limit the present application.

[0044] The embodiments of the application will be described in detail below with reference to the accompanying drawings.

[0045] The present embodiment provides a continuous firing clip applier for overcoming the problems existing in the prior art, which works as follows: a plurality of ligature clips 153 are preloaded in the clip magazine 154, after completing the clip application once, the ligature clips 153 do not need to be reloaded, only the operation of changing the magazine and then firing can realize the continuous firing of the ligature clips 153, thereby shortening the operation time, reducing the working intensity of the doctors, and reducing the risk of anesthesia and infection of the patients.

[0046] A continuous firing clip applier mainly consists of a loading mechanism 10 and a clip application mechanism 200, the loading mechanism 10 is used for loading a plurality of ligature clips 153 into the clip magazine 154, and the clip application mechanism 200 is used for continuous firing of the ligature clips 153 in the clip magazine 154. Figures 1 to 12 It is a schematic diagram of the structural composition of the loading mechanism 10, Figures 13 to 20 It is a schematic diagram of the internal structure of the clip application mechanism 200.

[0047] Referring to Figures 1 to 2, the loading mechanism 10 mainly comprises an upper pressing plate 11, a fixer 12, an upper shell 13, two side pressing plates 14, a cartridge assembly 15, a loader 16, a lower shell 17, two buckles 18 and the like. As shown in Figure 7

[0048] The upper sleeve 151 and the lower sleeve 155 are buckled with each other to fix the cartridge 154, the propelling piece 152 and the plurality of ligature clips 153 inside the combined structure, and the whole forms a tubular structure. The two clamp heads 156 are rotationally connected to one end of the cartridge 154, and the U-shaped spring 157 is arranged at the bottom of the end of the cartridge 154 where the clamp head 156 is installed and is connected with the two clamp heads 156 respectively.

[0049] As shown in Figure 1 and Figure 2 , the bottom of the upper pressing plate 11 is formed with a plurality of pressing blocks 111 at equal intervals, the end of the pressing block 111 is processed into a circular arc shape, the fixer 12 is provided with a through hole corresponding to the position of the pressing block 111, the size of the through hole matches the size of the pressing block 111, and the upper pressing plate 11 is movably inserted into the fixer 12. The two sides of the through hole of the fixer 12 are respectively formed with buckling fingers 121, the buckling fingers 121 are located at the bottom of the fixer 12, the two buckling fingers 121 are elastic, and are used for fixing the upper sleeve 151 and the propelling piece 152.

[0050] The propelling piece 152 is placed inside the upper sleeve 151 and the upper sleeve 151 is located above the propelling piece 152, the buckling fingers 121 buckle the two sides of the propelling piece 152, so as to fix the upper sleeve 151 and the propelling piece 152 at the bottom of the fixer 12. The top of the upper shell 13 is provided with a fixer clamping groove 131, the fixer clamping groove 131 penetrates through the upper and lower surfaces of the upper shell 13, the fixer 12 is installed in the fixer clamping groove 131, and the upper sleeve 151 and the propelling piece 152 are located below the upper shell 13.

[0051] As shown in Figure 1 and Figure 3 , a sleeve groove 171 is processed in the lower shell 17, the lower sleeve 155 is installed in the sleeve groove 171, the cartridge 154 is placed inside the lower sleeve 155 and located above the lower sleeve 155, and the loader 16 is also installed in the lower shell 17 and located above the cartridge 154.

[0052] ​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.

[0053] 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.

[0054] Combination Figures 1 to 6 The working principle of the loading mechanism 10 is explained as follows: 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.

[0055] 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.

[0056] Finally, the upper pressing plate 11 is pressed downward, the end of the pressing block 111 of the upper pressing plate 11 abuts against the upper sleeve 151 and presses the upper sleeve 151 and the pushing piece 152 into the loader 16 from the fixer 12, the pushing piece 152 moving downward synchronously presses the ligature clip 153 in the semi-closed state into the inside of the cartridge 154, the upper sleeve 151 and the lower sleeve 155 are buckled to each other to fix the cartridge 154, the ligature clip 153 and the pushing piece 152 in the inside of the cartridge 154, the loading is completed, and the buckle 18 is released to disassemble the loading mechanism 10 and take out the cartridge assembly 15.

[0057] The assembly relationship of each part of the cartridge assembly 15 is shown in Figures 8 to 12 As shown in the figure, the cartridge 154 is a U-shaped groove structure, the pushing piece 152 is installed in the inside of the cartridge 154, and the ligature clip 153 is made of degradable material and is placed in the gap between the pushing piece 152 and the cartridge 154. The pushing piece 152 and the cartridge 154 are both processed with a plurality of inclined plate pushers 1522, and the inclined plate pushers 1522 of the pushing piece 152 and the cartridge 154 are located on the same side, and the inclined plate pushers 1522 correspond to the positions of the ligature clip 153 one by one. The inclined plate pusher 1522 of the pushing piece 152 is used to abut against the cylindrical pin 1531 of the ligature clip 153 to push the next ligature clip 153 to the position of the previous ligature clip 153, and the inclined plate pusher 1522 of the cartridge 154 is used to prevent the ligature clip 153 pushed forward from retreating when the pushing piece 152 resets.

[0058] The tail of the pushing piece 152 is provided with a first connecting hole 1521, and the tail of the cartridge 154 is provided with a second connecting hole 1541, which is used to fix the cartridge assembly 15 in the clip applying mechanism 200. The head of the cartridge 154 is rotatably connected with two clamp heads 156, the end of each clamp head 156 is clamped on the U-shaped spring 157, and the U-shaped spring 157 is installed at the bottom of the cartridge 154.

[0059] The end of each clamp head 156 away from the U-shaped spring 157 is processed with a placing groove 1561, and the size of the placing groove 1561 matches the size of the cylindrical pin 1531 at the end of the ligature clip 153.

[0060] The ligature clip 153 pushed out of the cartridge 154 gradually recovers to the natural state until the cylindrical pin 1531 at the end of the ligature clip 153 is clamped in the placing groove 1561. When the two clamp heads 156 are closed under the action of external force, the two ends of the ligature clip 153 are buckled together, the U-shaped spring 157 generates elastic force due to deformation, and after the external force is removed, the U-shaped spring 157 releases the elastic force to restore the two clamp heads 156 to the open state.

[0061] The cartridge assembly 15 is installed in the clip applying mechanism 200, and the two clamp heads 156 of the cartridge assembly 15 are outward, and the structure of the clip applying mechanism 200 is shown in Figures 13 to 20The shown. Clip applying mechanism 200 is mainly composed of outrigger pipe 201, hand wheel 202, cartridge clamping piece 203, outrigger pipe seat 204, first spring 205, trigger 206, handle 207, cartridge changer 208, second spring 210, counting assembly 211, slider 212 and yoke 213. In combination Figure 18 It can be seen that the outer side of hand wheel 202 is provided with neck recess 2023, handle 207 is clamped in neck recess 2023 of hand wheel 202, and hand wheel 202 can rotate 360° along its own axis.

[0062] One end of cartridge clamping piece 203 is provided with first clamping head 2031, and the other end is fixed on pin shaft seat 2021 inside hand wheel 202 through pin shaft 209. Pin shaft 209 is arranged in waist hole 2082 of cartridge changer 208, and one end of cartridge changer 208 is formed with second clamping head 2081. First connecting hole 1521 of pusher 152 in cartridge assembly 15 is clamped with second clamping head 2081 of cartridge changer 208, and second connecting hole 1541 of cartridge 154 in cartridge assembly 15 is clamped with first clamping head 2031 of cartridge clamping piece 203.

[0063] Cartridge clamping piece 203 is fixed on hand wheel 202 through pin shaft 209, so as to ensure that cartridge 154 does not move. Pusher 152 is moved by the movement of cartridge changer 208, and pusher 152 pushes forward ligation clip 153 by using inclined piece push finger 1522 against cylindrical pin 1531 of ligation clip 153.

[0064] Trigger 206 is rotationally connected with handle 207, one end of trigger 206 is formed with hoof part 2061, and hoof part 2061 is located inside handle 207. Cartridge changer 208 is arranged in hoof part 2061, the other end away from second clamping head 2081 is formed with ball head part 2083, and ball head part 2083 is installed in spherical groove 2121 on slider 212. Slider 212 is slidingly connected in second sliding groove 2074 of handle 207 through wings 2122 arranged on both sides of itself, wings 2122 on both sides extend outward to the outside of handle 207, and are fixedly connected with yoke 213 arranged outside handle 207. Second spring 210 is sleeved outside cartridge changer 208, one end of second spring 210 abuts against slider 212, and the other end abuts against limiting block 2022 inside hand wheel 202.

[0065] 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.

[0066] 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.

[0067] 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.

[0068] 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.

[0069] 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.

[0070] 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 component 211 includes a counting plate 2111, a retreat stop plate 2112, a ratchet 2113, and a torsion spring 2114. The top of the counting plate 2111 is processed with numbers for displaying the number of the ligature clips 153 remaining in the magazine 154, and the bottom of the counting plate 2111 is provided with step slots 21111 corresponding to the numbers. The top end of the inside of the handle 207 is provided with a first sliding groove 2072, and the counting plate 2111 is slidingly connected in the first sliding groove 2072. The top of the handle 207 is provided with an observation port 2071 for observing the numbers on the counting plate.

[0071] The first sliding groove 2072 is formed with a suspension block 2073 below, and the suspension block 2073 is connected to the inner wall of the handle 207. The first sliding groove 2072 is provided with a first notch 20721 and a second notch 20722 adjacent to the suspension block 2073. One end of the retreat stop plate 2112 is mounted on the suspension block 2073, and the other end is protruded upward to form an arc-shaped portion inserted into the step slot 21111 at the bottom of the counting plate 2111 through the first notch 20721 to prevent the counting plate 2111 from retreating. The torsion spring 2114 is mounted inside the ratchet 2113, and the ratchet 2113 is mounted in the groove at the top of the sliding block 212. The ratchet 2113 is pressed into the groove due to the limited space, and the torsion spring 2114 generates elastic force due to deformation. The retreat stop plate 2112 and the ratchet 2113 are parallel to each other.

[0072] When the sliding block 212 moves forward, the ratchet 2113 moves forward synchronously, and the second spring 210 is compressed. When the ratchet 2113 moves to the second notch 20722, the activity space increases, the torsion spring 2114 releases the elastic force to pop up the ratchet 2113, and the front end of the ratchet 2113 is inserted into the step slot 21111 at the bottom of the counting plate 2111 through the second notch 20722. At the same time, the ratchet 2113 continues to move forward to push the counting plate 2111 forward by a width of the step slot 21111, so that a new number is displayed in the observation port. The arc-shaped portion of the retreat stop plate 2112 is inserted into the step slot 21111 from the first notch 20721, and the counting plate 2111 moves forward. The arc-shaped portion of the retreat stop plate 2112 slides from the previous step slot 21111 to the next step slot 21111 to prevent the counting plate 2111 from retreating.

[0073] When the sliding block 212 is reset by the second spring 210, the ratchet 2113 moves backward synchronously, the activity space decreases, and the ratchet 2113 is pressed into the groove at the top of the sliding block 212 again. The torsion spring 2114 stores elastic potential energy, and the ratchet 2113 is popped up by the torsion spring 2114 during the next change of the magazine 154, so that the number of the ligature clips 153 remaining in the magazine 154 is displayed synchronously through the numbers on the counting plate 2111.

[0074] The working principle of the continuous firing clamp is as follows: First, install two clamp heads 156 and U-shaped springs 157 on the magazine 154, install the lower sleeve 155 and the magazine 154 in the lower shell 17, and install the loader 16 in the lower shell 17 above the magazine 154. The holder 12 is installed in the holder clamping groove 131 of the upper shell 13, the upper sleeve 151 and the pusher 152 are clamped at the bottom of the holder 12, and then a plurality of ligature clamps 153 are installed in the ligature clamp clamping groove 161 of the loader 16, and the side pressure plates 14 are placed on both sides of the loader 16. Then, the upper shell 13 and the lower shell 17 are butted, and the buckles 18 at both ends of the shells are buckled to connect the upper shell 13 and the lower shell 17 into a whole.

[0075] At the same time, press the two side pressure plates 14 on both sides of the loader 16, the extrusion blocks 141 at the ends of the two side pressure plates 14 push the cylindrical pins 1531 of the ligature clamps 153 to make the two ends of the ligature clamps 153 close to each other, and when the ends of the side pressure plates 14 abut against the stop blocks 163 of the loader 16 and cannot continue to move, it indicates that the two side pressure plates 14 have been pressed into place, and then the ligature clamps 153 are extruded from the natural state to the semi-closed state.

[0076] Finally, press the upper pressure plate 11 downward, the pressure block 111 at the bottom of the upper pressure plate 11 pushes the upper sleeve 151 to move downward, the pusher 152 and the ligature clamps 153 in the semi-closed state are simultaneously pressed into the inside of the magazine 154, the upper sleeve 151 and the lower sleeve 155 are buckled to fix the magazine 154, the ligature clamps 153 and the pusher 152 inside, and the buckles 18 are loosened to disassemble the loader 10 and take out the magazine assembly 15.

[0077] The magazine assembly 15 is installed in the outer extension pipe 201 with the two clamp heads 156 outward, until the first connecting hole 1521 of the pusher 152 is buckled with the second clamping head 2081 of the magazine changer 208, and the second connecting hole 1541 of the magazine 154 is buckled with the first clamping head 2031 of the magazine clamping piece 203.

[0078] Then, the reloading operation is performed, the pawl 213 arranged outside the handle 207 is actuated, the pawl 213 synchronously drives the sliding block 212 to slide in the second sliding groove 2074, the sliding block 212 pushes the magazine changer 208 to move forward, and the second spring 210 is compressed to have elastic force. The magazine clamping piece 203 is fixed on the hand wheel 202 through the pin shaft 209, so as to ensure that the magazine 154 does not move.

[0079] The pusher 152 is pushed forward by the pusher 152 with the inclined pusher finger 1522 to push the next ligator clip 153 to the position of the previous ligator clip 153. The ligator clip 153 at the head of the cartridge 154 is pushed by the pusher 152 to the forceps head 156 and slides along the forceps head 156. The ligator clip 153 gradually restores to the natural state during the sliding process until the cylindrical pin 1531 of the ligator clip 153 is clamped in the placing groove 1561 at the end of the forceps head 156.

[0080] After the release of the release fork 213, the second spring 210 releases the elastic force to push the slider 212 back to the initial position, so that the magazine changer 208 is reset, and the pusher 152 is reset by the magazine changer 208.

[0081] During the forward movement of the slider 212 driven by the release fork 213, the ratchet 2113 also moves forward synchronously. When the ratchet 2113 moves to the second notch 20722, the torsional spring 2114 releases the elastic force to pop up the ratchet 2113. The front end of the ratchet 2113 penetrates the second notch 20722 and is inserted into the stepping groove 21111 at the bottom of the counting plate 2111.

[0082] At the same time, the ratchet 2113 continues to move forward to push the counting plate 2111 forward by a width of the stepping groove 21111, so that a new number is displayed in the observation hole 2071. The arc-shaped part of the stop plate 2112 is inserted into the stepping groove 21111 from the first notch 20721. When the counting plate 2111 moves forward, the arc-shaped part 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 retreating.

[0083] When the slider 212 is pushed backward by the second spring 210, the ratchet 2113 is also moved backward synchronously. The ratchet 2113 is pressed into the groove at the top of the slider 212 again due to the reduction of the activity space. The torsional spring 2114 stores elastic potential energy due to deformation, and the ratchet 2113 is popped up by the torsional spring 2114 during the next magazine changing, so that the number of remaining ligator clips 153 in the cartridge 154 is displayed synchronously through the numbers on the counting plate 2111.

[0084] Then, the trigger 206 is pulled away from one end of the hoof part 2061, and the trigger 206 rotates to move the hoof part 2061 on the trigger 206 forward by using the lever principle. The outer extension pipe seat 204 is pushed forward synchronously, and the first spring 205 is compressed to have elastic potential energy. The outer extension pipe seat 204 moves forward to drive the outer extension pipe 201 to move forward synchronously. The outer extension pipe 201 away from the hand wheel 202 end extrudes the two forceps heads 156 in the cartridge assembly 15 to make the two forceps heads 156 close to each other, and the ligator clip 153 is clamped at the place that needs to be closed for treatment of the patient. The U-shaped spring 157 connected with the two forceps heads 156 is deformed to have elastic potential energy.

[0085] 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.

[0086] 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.

[0087] 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.

[0088] 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.

[0089] 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.

[0090] 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 has a magazine assembly installed inside, and the magazine assembly contains a magazine; 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.

2. The rapid-fire clamp according to claim 1, characterized in that, The magazine assembly includes: The lower sleeve has the magazine installed inside, and the magazine has a propulsion component installed inside. The magazine has a U-shaped groove structure. 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 upper sleeve is fastened to the lower sleeve, and the magazine, the propulsion component, and the ligature clip are fixed in the combined structure of the upper and lower sleeves; 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 subsequent 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.

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 slot and the stop block 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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