Laparoscopic clip applier with adjustable clip head

Abstract

The laparoscopic clip applier comprises the forceps head, a main rod and a handle, the forceps head and the handle are arranged at the two ends of the main rod respectively, the end, close to the main rod, of the forceps head is inserted into one end of the main rod and fixedly connected with the main rod through a limiting mechanism, and a pressing assembly is arranged in the forceps head and used for pressing a tissue clip; the other end of the main rod is inserted into one end of the handle and is in threaded connection with the handle, and a storage groove is jointly formed in the main rod and the chuck. When the improved laparoscopic clip applier is used, the tissue clips in the jaw of the clip head can be sequentially mounted only by adjusting the position of the internal piston push rod, an operator does not need to repeatedly feed the tissue clips, and the position of the clip head in the abdominal cavity of a patient can be adjusted only by inclining the handle; and a plurality of tissue clamps can be sequentially mounted on the corresponding tissues, so that the device is simple to operate, and the mounting efficiency of the tissue clamps is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of laparoscopic clip appliers, and particularly to a laparoscopic clip applier with an adjustable jaw head. Background Art

[0002] A laparoscopic clip applier is a pair of forceps that can hold and close a ligating clip during a laparoscopic surgery. The laparoscopic clip applier can extend into the human body through a small incision, cooperate with a laparoscope to observe the surgical site inside the human body, and install tissue clips.

[0003] During the use of the existing laparoscopic clip appliers, generally, the operator needs to repeatedly take out the jaw head from the patient's abdominal cavity, perform the feeding operation of the tissue clip, and then insert the jaw head into the patient's abdominal cavity again to complete the installation of the tissue clip. The installation efficiency of the tissue clip is low. Summary of the Invention

[0004] The purpose of the present invention is to provide a laparoscopic clip applier with an adjustable jaw head to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A laparoscopic clip applier with an adjustable jaw head, including a jaw head, a main rod, and a handle. The jaw head and the handle are respectively arranged at two ends of the main rod. One end of the jaw head close to the main rod is inserted into one end of the main rod and fixedly connected to the main rod through a limiting mechanism. A pressing component is arranged inside the jaw head for pressing the tissue clip.

[0006] The other end of the main rod is inserted into one end of the handle and is threadedly connected to the handle. A storage groove is jointly opened inside the main rod and the jaw head, and the storage groove is used for storing the tissue clip. A piston push rod is arranged inside the storage groove. A positioning component is arranged inside the main rod for restricting and positioning the piston push rod. An air injection component is arranged at the other end of the handle for performing air injection operation inside the storage groove.

[0007] Preferably, the limiting mechanism includes two elastic pieces. Two limiting grooves are oppositely arranged on both sides of one end of the jaw head close to the main rod. A rectangular groove is opened inside the main rod at a position corresponding to the limiting groove, and the elastic piece is arranged inside the corresponding rectangular groove. Both sides of the elastic piece are fixedly connected to the inner wall of the corresponding rectangular groove, and the middle part of the elastic piece is inserted into the corresponding limiting groove and is in contact with the inner wall of the corresponding limiting groove.

[0008] Preferably, two soft rods with a semicircular cross-sectional shape are relatively fixedly installed inside the plate wall of the jaw at the bottom end of the jaw head, and the middle positions of the arc surfaces of the two soft rods are both inserted into the storage groove.

[0009] Preferably, the piston push rod includes a piston plate and a rectangular plate. The piston plate is fixedly installed at one end of the rectangular plate away from the clamping head, and both the piston plate and the rectangular plate are slidably connected to the inner wall of the storage tank.

[0010] Preferably, the air injection assembly includes an air pump. A placement groove is formed at the other end of the handle, and the placement groove is communicated with the inside of the storage tank through a first connection hole. The air pump is fixedly installed in the placement groove, and the exhaust end of the air pump is inserted into the first connection hole. An electric control valve is fixedly installed on the outer peripheral wall of the handle, and the intake end of the electric control valve is inserted into the first connection hole.

[0011] Preferably, a rear end cover is provided at the other end of the handle, and a filter plate is fixedly installed in the inner hole of the rear end cover.

[0012] Preferably, the positioning assembly includes a piston positioning rod. A plurality of positioning grooves are equidistantly formed on the top side of the rectangular plate. A guiding groove is formed in the main rod corresponding to the position of the positioning groove, and the bottom of the guiding groove is communicated with the inside of the storage tank. The top of the guiding groove is communicated with the inside of the storage tank through a second connection hole. The piston positioning rod is slidably installed in the corresponding guiding groove.

[0013] Preferably, the pressing assembly includes a piston push plate. An installation groove is formed in the plate wall of the top clamping jaw of the clamping head, and the bottom opening of the installation groove is communicated with the inside of the storage tank. The inside of the installation groove is communicated with the top of the guiding groove through a third connection hole. The piston push plate is slidably installed in the installation groove. A rectangular pressing plate is fixedly installed on the bottom side of the piston push plate, and the rectangular pressing plate is slidably connected to the inner wall of the installation groove.

[0014] Preferably, a clamping groove is formed on the bottom side of the rectangular pressing plate, and the inner wall of the clamping groove is coplanar with the inner wall of the storage tank. A spring is wound around the outer peripheral side of the rectangular pressing plate, and both ends of the spring are fixedly connected to the piston push plate and the inner wall of the installation groove respectively.

[0015] Preferably, a magnetic ring is provided on the top side of the piston positioning rod, and the plug plate of the piston positioning rod is a magnetic plate. The outer peripheral wall of the magnetic ring is fixedly connected to the inner wall of the guiding groove, and the suction force between the magnetic ring and the piston positioning rod is less than the thrust of the spring on the piston push plate.

[0016] The present invention has the following beneficial effects:

[0017] When the improved laparoscopic clip applier is used, only the position adjustment of the internal piston push rod needs to be performed to sequentially complete the installation of the tissue clip in the clamping jaw of the clamping head. It is not necessary for the operator to repeatedly perform the feeding operation of the tissue clip, and only by tilting the handle, the position of the clamping head in the patient's abdominal cavity can be adjusted, and multiple tissue clips can be sequentially installed on the corresponding tissues. The device has simple operation and improves the installation efficiency of the tissue clip. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is the front view of the overall structure of the present invention;

[0020] Figure 2 It is the perspective view of the overall structure of the present invention;

[0021] Figure 3 It is the front view of the internal structures of the jaw head, main rod and handle of the present invention;

[0022] Figure 4 It is the top view of the internal structures of the jaw head and part of the main rod of the present invention;

[0023] Figure 5 It is the perspective view of the internal structure of the jaw head of the present invention;

[0024] Figure 6 It is the perspective view of the internal structure of the main rod of the present invention;

[0025] Figure 7 It is the front view of the internal structure of the handle of the present invention;

[0026] Figure 8 It is the top view of the internal structure of the jaw head of the present invention;

[0027] Figure 9 For the present invention Figure 6 The enlarged view of the structure at A;

[0028] Figure 10 It is the right view of the internal structure of the jaw head of the present invention.

[0029] In the figure: 1. Jaw head; 2. Main rod; 3. Handle; 4. Limiting mechanism; 41. Limiting groove; 42. Rectangular groove; 43. Elastic sheet; 5. Air injection assembly; 51. Placing groove; 52. First connection hole; 53. Air pump; 54. Electric control valve; 55. Rear end cover; 56. Filter plate; 6. Positioning assembly; 61. Positioning groove; 62. Guide groove; 63. Second connection hole; 64. Piston positioning rod; 65. Magnetic ring; 7. Pressing assembly; 71. Installation groove; 72. Third connection hole; 73. Piston push plate; 74. Pressing plate; 75. Card slot; 76. Spring; 8. Storage tank; 9. Piston push rod; 91. Piston plate; 92. Rectangular plate; 11. Soft rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] In order to make the technical solution and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0031] The present invention provides a technical solution: Referring to Figure 1 - Figure 9 , a laparoscopic clip applier with an adjustable jaw head disclosed by the present invention includes a jaw head 1, a main rod 2 and a handle 3. The jaw head 1 and the handle 3 are respectively arranged at both ends of the main rod 2, and one end of the jaw head 1 close to the main rod 2 is inserted into one end of the main rod 2 and fixedly connected to the main rod 2 through a limiting mechanism 4. A pressing assembly 7 is arranged in the jaw head 1 for pressing the tissue clip;

[0032] The other end of the main rod 2 is inserted into one end of the handle 3 and is threadedly connected to the handle 3. A storage groove 8 is jointly opened in the main rod 2 and the chuck, and the storage groove 8 is used for storing the tissue clip. A piston push rod 9 is arranged in the storage groove 8. A positioning assembly 6 is arranged in the main rod 2 for restricting and positioning the piston push rod 9. An air injection assembly 5 is arranged at the other end of the handle 3 for performing air injection operation in the storage groove 8.

[0033] In this embodiment, please refer to Figure 5 As shown, the two ends of the jaw head 1 are a jaw end and a plate-shaped end. Please refer to Figure 2 and Figure 3 As shown, the plate-shaped end of the jaw head 1 is inserted into a plate-shaped groove formed by inward depression at one end of the main rod 2, and elastic limit restraint is performed through the limiting mechanism 4 to complete the connection between the jaw head 1 and the main rod 2, so that the jaw head 1 and the main rod 2 can be disassembled and assembled. Specifically: When using the device, pulling the jaw head 1 in a direction away from the main rod 2 can complete the disassembly of the jaw head 1 and the main rod 2. Please refer to Figure 3 and Figure 6 As shown, the disassembly of the jaw head 1 and the main rod 2 can split the storage groove 8 into two sections, so that the storage groove 8 forms a larger opening. At this time, the operator can insert the corresponding number of tissue clips into the storage groove 8 for storage according to needs, and finally insert the plate-shaped end back into the plate-shaped groove. Please refer to Figure 4 As shown, the limiting mechanism 4 can automatically complete the positioning restraint between the jaw head 1 and the main rod 2, so that the jaw head 1 is stably connected to the main rod 2 without being subjected to a large external force, and the feeding of the tissue clip is completed;

[0034] It should be noted that in order to cope with the use of tissue clips of different specifications, the jaw head 1 and the main rod 2 can be set in different specifications. Specifically, the storage groove 8 and the piston push rod 9 in the jaw head 1 and the main rod 2 can be adaptively adjusted according to the tissue clip. When using, rotating the main rod 2 can screw out the other end of the main rod 2 from the handle 3, and then replacing different main rods 2 and jaw heads 1 can adjust the specification of the jaw head 1 of the device to adapt to the use of different tissue clips;

[0035] According to the existing use process of the clip applier, the clamp head 1 and part of the main rod 2 are inserted into the patient's abdomen, please refer to Figure 6 and Figure 7 As shown, the gas injection assembly 5 is then started to inject gas into the storage tank 8. As the gas pressure in the storage tank 8 increases, the piston push rod 9 slowly moves toward the jaws. Please refer to Figure 5 and Figure 6 As shown, due to the mutual interference between the tissue clips and the restraint and limitation of the tissue clips by the inner wall of the storage slot 8, the tissue clips are slowly moved into the jaws one by one, and the operator does not need to repeatedly load the tissue clips, thereby improving the installation efficiency of the tissue clips;

[0036] When there is a tissue clip in the jaws, the piston rod stops moving due to the mutual conflict between the tissue clips and the mutual conflict between the piston push rod 9 and the tissue clip. Please refer to Figure 6 and Figure 9 As shown, the gas-driven positioning assembly 6 then operates to lock the position of the piston push rod, and the piston push rod 9 will only push one tissue clip into the jaws at a time, and when the piston push rod 9 pushes the tissue clip, there will be no strong resistance between the tissue clips, so as to prevent the tissue clips from being damaged;

[0037] After the position of the tissue clip is adjusted, the operator moves the clamp head 1 so that the corresponding tissue is inserted into the tissue clip. Figure 5 - Figure 7 As shown, the gas injection component 5 is started again, and the pressing component 7 is started accordingly, and a pressure is applied to the pressing end of the tissue clamp until the tissue clamp is buckled and clamped and fixed on the corresponding tissue, thereby completing the installation of the tissue clamp. Subsequently, the operator moves the clamp head 1 to remove the installed tissue clamp from the jaws of the clamp head 1, and then the piston push rod 9 pushes the subsequent tissue clamp into the jaws, and the handle 3 is tilted to directly adjust the clamp head 1 to different positions in the patient's abdominal cavity. The position adjustment operation of the clamp head 1 is simple, so that tissues at different positions can be inserted into different tissue clamps in turn, and then different tissue clamps can be installed on tissues at corresponding positions in turn. There is no need to remove the clamp head 1 from the patient's abdominal cavity. The clamp head 1 can be moved a small distance to install multiple tissue clamps on the corresponding tissues. The operation is simple, and the installation efficiency of the tissue clamp is improved.

[0038] In a further preferred embodiment of the present invention, Figure 4 As shown, the limiting mechanism 4 includes two spring pieces 43, two limiting grooves 41 are oppositely arranged on both sides of the pliers head 1 close to one end of the main rod 2, a rectangular groove 42 is opened at the position corresponding to the limiting groove 41 in the main rod 2, and the spring piece 43 is arranged in the corresponding rectangular groove 42, both sides of the spring piece 43 are fixedly connected to the inner wall of the corresponding rectangular groove 42, and the middle part of the spring piece 43 is inserted into the corresponding limiting groove 41 and contacts with the inner wall of the corresponding limiting groove 41;

[0039] In this embodiment, please refer to Figure 4 As shown, the cross-section of the spring piece 43 is in the shape of a two-fifths ring. When the pliers head 1 is pulled in a direction away from the main rod 2, due to the mutual interference between the outer arc wall of the spring piece 43 and the inner arc wall of the limiting groove 41, as the spring piece 43 contracts and deforms, the spring piece 43 can be squeezed out of the limiting groove 41 along the outer arc wall of the spring piece 43, and the limiting state between the main rod 2 and the pliers head 1 is automatically contacted;

[0040] During the process of inserting the plate-like end of the pliers head 1 into the plate-like groove of the shell, due to the mutual interference between the plate-like end and the spring sheet 43, the plate-like end can be squeezed into the rectangular groove 42 along the outer arc wall of the spring sheet 43, so that the plate-like end can continue to be inserted into the main rod 2. Then, after the plate-like end is fully inserted into the plate-like groove, the limiting groove 41 is aligned with the middle position of the spring sheet 43. As the deformation of the spring sheet 43 is reset, the middle part of the spring sheet 43 is automatically inserted into the limiting groove 41. Due to the mutual interference between the spring sheet 43 and the inner wall of the limiting groove 41, a restraining force can be applied to the pliers head 1, so that the pliers head 1 and the main rod 2 are stably combined together, and the assembly and disassembly operations between the pliers head 1 and the main rod 2 are simple.

[0041] In a further preferred embodiment of the present invention, Figure 5 and Figure 8 As shown, two soft rods 11 with a semicircular cross-section are relatively fixedly installed in the plate wall of the bottom jaw of the pliers head 1, and the middle positions of the arc surfaces of the two soft rods 11 are inserted into the storage groove 8;

[0042] In this embodiment, please refer to Figure 3 , Figure 5 and Figure 8 As shown, in the process of inserting the tissue clip into the jaws of the forceps head 1, due to the mutual interference between the tissue clip and the curved surface of the soft rod 11, the soft rod 11 contracts and deforms, so that the tissue clip can directly slide into the jaws of the forceps head 1, and after the tissue clip slides into the jaws of the forceps head 1, due to the mutual interference between the soft rod 11 and the tissue clip, a certain intensity of friction is generated between the tissue clip and the forceps head 1, so that when the pressing component 7 presses the tissue clip, the tail end of the tissue clip will not quickly tilt up and affect the merging of the tissue clip, and after the tissue clip in the forceps head 1 is moved out of the jaws, due to the blocking of the tissue clip by the soft rod 11, the subsequent tissue clip will not directly slide into the jaws without being subjected to external force.

[0043] In a further preferred embodiment of the present invention, Figure 3 and Figure 6 As shown, the piston push rod 9 includes a piston plate 91 and a rectangular plate 92, the piston plate 91 is fixedly mounted on an end of the rectangular plate 92 away from the clamp head 1, and the piston plate 91 and the rectangular plate 92 are both slidably connected to the inner wall of the storage tank 8;

[0044] In this embodiment, please refer to Figure 6 As shown, as the gas in the storage tank 8 increases, a thrust toward the forceps head 1 can be applied to the piston plate 91, thereby pushing the rectangular plate 92 to slide toward the forceps head 1. Since the rectangular plate 92 can completely fill the internal space of the storage tank 8, the pushing of the tissue clamp by the rectangular plate 92 is relatively stable.

[0045] In a further preferred embodiment of the present invention, Figure 3 , Figure 6 and Figure 7 As shown, the gas injection assembly 5 includes an air pump 53, a placement groove 51 is opened at the other end of the handle 3, and the placement groove 51 is connected to the inside of the storage tank 8 through a first connecting hole 52, the air pump 53 is fixedly installed in the placement groove 51, and the exhaust end of the air pump 53 is inserted into the first connecting hole 52, and an electric control valve 54 is fixedly installed on the outer peripheral wall of the handle 3, and the air inlet end of the electric control valve 54 is inserted into the first connecting hole 52;

[0046] In this embodiment, please refer to Figure 2 and Figure 7 As shown, the air pump 53 is fixedly connected to the inner wall of the placement groove 51 by bonding, and a control button is installed on the handle 3 to control the operation or shutdown of the air pump 53 and the electric control valve 54; a battery is installed in the handle 3 to power the air pump 53, the electric control valve 54 and the control button. Specifically, when the operator presses the control button once, the air pump 53 runs for a specific period of time. The started air pump 53 continuously extracts the gas in the placement groove 51 and injects the gas into the first connecting hole 52. Please refer to Figure 6 and Figure 7 As shown, the gas injected into the first connecting hole 52 is introduced into the storage tank 8 through the first connecting hole 52; the operator presses the control button for a long time to open the electric control valve 54, so that the gas in the device is discharged from the electric control valve 54, and the device is easy to operate.

[0047] In a further preferred embodiment of the present invention, Figure 7 As shown, the other end of the handle 3 is provided with a rear end cover 55, and a filter plate 56 is fixedly installed in the inner hole of the rear end cover 55;

[0048] In this embodiment, according to Figure 7 As shown, the center position of the rear end cover 55 is hollow to leave space for the installation of the filter plate 56. As the gas in the placement groove 51 leaks, a sufficient pressure difference can be generated on both sides of the filter plate 56. The external gas passes through the holes of the filter plate 56 and flows into the placement groove 51 to replenish the gas lost in the placement groove 51, while the very small amount of impurities in the external gas are directly blocked outside the placement groove 51.

[0049] In a further preferred embodiment of the present invention, Figure 6 andFigure 9 As shown, the positioning component 6 includes a piston positioning rod 64. A plurality of positioning grooves 61 are equidistantly formed in the top side of the rectangular plate 92. A guiding groove 62 is formed in the main rod 2 at a position corresponding to the positioning groove 61. The bottom of the guiding groove 62 communicates with the inside of the storage groove 8, and the top of the guiding groove 62 is connected to the inside of the storage groove 8 through a second connection hole 63. The piston positioning rod 64 is slidably installed in the corresponding guiding groove 62.

[0050] In this embodiment, please refer to FIGS. 3 Figure 6 and Figure 7 As shown, when the piston push rod 9 stops moving due to the blockage of the tissue clip, the air pressure in the storage groove 8 and the guiding groove 62 increases accordingly, thereby applying a downward thrust to the piston positioning rod 64, so that the bottom end of the piston positioning rod 64 directly inserts into the positioning groove 61. At this time, due to the mutual contact between the piston positioning rod 64 and the inner walls of the guiding groove 62 and the positioning groove 61, the position of the piston push rod 9 in the storage groove 8 can be directly locked, so as to prevent the piston push rod 9 from applying a greater extrusion force to the tissue clip when the pressure in the subsequent storage groove 8 continues to increase.

[0051] In a further preferred embodiment of the present invention, as shown in FIGS. Figure 5 and Figure 10 As shown, the pressing component 7 includes a piston push plate 73. An installation groove 71 is formed in the plate wall of the top clamp of the clamp head 1, and the bottom opening of the installation groove 71 communicates with the inside of the storage groove 8. The inside of the installation groove 71 is connected to the top of the guiding groove 62 through a third connection hole 72. The piston push plate 73 is slidably installed in the installation groove 71. A rectangular pressing plate 74 is fixedly installed on the bottom side of the piston push plate 73, and the rectangular pressing plate 74 is slidably connected to the inner wall of the installation groove 71.

[0052] In this embodiment, please refer to FIGS. 5 Figure 6 and Figure 9 As shown, after the piston positioning rod 64 contacts the inner wall of the guiding groove 62, the gas injected into the storage groove 8 subsequently causes the pressure inside the storage groove 8, the guiding groove 62, and the installation groove 71 to continue to rise, so that the downward thrust received by the piston push plate 73 also gradually increases. After the thrust received by the piston push plate 73 is higher than the upward thrust of the spring 76 on the piston push plate 73, the piston plate 91 pushes the rectangular plate 92 to slowly move vertically downward, pressing the pressing end of the tissue clip, so that the buckle of the tissue clip is closed. There is no need to set an additional driving source, and there is no circuit inside the clamp head 1 and the main rod 2, and the gas in the injection device will not leak, so the device has high safety.

[0053] In a further preferred embodiment of the present invention, as shown in FIGS. Figure 10As shown, a clamping groove 75 is formed on the bottom side of the rectangular pressing plate 74, and the inner wall of the clamping groove 75 is coplanar with the inner wall of the storage groove 8. A spring 76 is wound around the outer peripheral side of the rectangular pressing plate 74, and both ends of the spring 76 are fixedly connected to the piston push plate 73 and the inner wall of the installation groove 71 respectively;

[0054] In this embodiment, please refer to Figure 5 and Figure 10 As shown, after the tissue clip slides into the jaws of the forceps head 1, the pressing end of the tissue clip directly inserts into the clamping groove 75. Thus, when the rectangular pressing plate 74 moves downward to press the pressing end of the tissue clip, due to the mutual resistance between the pressing end of the tissue clip and the inner wall of the clamping groove 75, the pressing end of the tissue clip will not be misaligned with the bottom buckle of the tissue clip during the downward movement, which affects the combined clamping of the tissue clip buckle.

[0055] In a further preferred embodiment of the present invention, as Figure 9 shown, a magnetic ring 65 is provided on the top side of the piston positioning rod 64, and the plug plate of the piston positioning rod 64 is a magnetic plate. The outer peripheral wall of the magnetic ring 65 is fixedly connected to the inner wall of the guiding groove 62, and the suction force between the magnetic ring 65 and the piston positioning rod 64 is less than the thrust of the spring 76 on the piston push plate 73;

[0056] In this embodiment, please refer to Figure 6 and Figure 9 shown, when injecting gas into the storage groove 8, due to the suction force between the magnetic ring 65 and the piston positioning rod 64, when the piston push rod 9 pushes the tissue clip into the forceps head 1, the piston positioning rod 64 will not insert into the positioning groove 61 to affect the sliding of the piston push rod 9.

[0057] Working principle: When the improved laparoscopic clip applier is in use, the operator reversely rotates the main rod 2 to complete the disassembly of the main rod 2 and the handle 3. At this time, the operator inverts the handle 3 and can directly pour out the battery in the handle 3. Subsequently, a new battery is sequentially inserted into the handle 3 to complete the replacement of the battery in the handle 3;

[0058] After the main rod 2 and the handle 3 are disassembled, the operator can replace the forceps head 1 and the main rod 2 of the corresponding specification according to the usage requirements, and screw the main rod 2 back into the handle 3 so that the device can adapt to the use of the tissue clip of the corresponding specification;

[0059] Then the operator pulls the pliers head 1 in the direction away from the main rod 2. Due to the mutual interference between the outer arc wall of the spring piece 43 and the inner arc wall of the limiting groove 41, as the spring piece 43 contracts and deforms, the spring piece 43 can be squeezed out of the limiting groove 41 along the outer arc wall of the spring piece 43, and automatically contacts the restrained limiting state between the main rod 2 and the pliers head 1, so that the plate-shaped end of the pliers head 1 can be directly pulled out of the main rod 2 to complete the separation of the pliers head 1 and the main rod 2, and simultaneously separate the storage groove 8 into two parts, so that a larger opening is formed in the storage groove 8 in the main rod 2. At this time, the operator can insert the required number of tissue clips into the storage groove 8 through the opening of the storage groove 8 in the main rod 2 as needed. The plate-like end of the clamp head 1 is stored in the groove 8, and finally the plate-like end of the clamp head 1 is reinserted into the plate-like groove of the main rod 2. Due to the mutual interference between the plate-like end and the spring sheet 43, the plate-like end can be squeezed into the rectangular groove 42 along the outer arc wall of the spring sheet 43, so that the plate-like end can continue to be inserted into the main rod 2. Then, after the plate-like end is completely inserted into the plate-like groove, the limiting groove 41 is just aligned with the middle position of the spring sheet 43. As the deformation of the spring sheet 43 is reset, the middle part of the spring sheet 43 is automatically inserted into the limiting groove 41. Due to the mutual interference between the spring sheet 43 and the inner wall of the limiting groove 41, a restraining force can be applied to the clamp head 1, so that the clamp head 1 and the main rod 2 are stably combined together, and the feeding operation of the tissue clamp is completed;

[0060] After the tissue clip loading operation is completed, the operator inserts the clamp head 1 and part of the main rod 2 into the patient's abdomen according to the existing use process of the clamp applier, and the operator presses the control button on one side, and the air pump 53 starts to continuously extract the gas in the placement groove 51 for a corresponding period of time, and injects the gas into the first connecting hole 52. At this time, a sufficient pressure difference is generated on both sides of the rear end cover 55, and the external gas passes through the holes of the filter plate 56 and flows into the placement groove 51 to replenish the gas lost in the placement groove 51, while a very small amount of impurities in the external gas are directly blocked outside the placement groove 51;

[0061] It should be noted that the operator can remove the rear end cover 55 from the handle 3 to remove the shielding state of the opening of the placement slot 51 and perform maintenance on the air pump 53;

[0062] The gas injected into the first connecting hole 52 is introduced into the storage tank 8 through the first connecting hole 52. As the gas between the side of the piston plate 91 close to the rear end cover 55 and the inner wall of the storage tank 8 increases, a thrust toward the direction of the pliers head 1 can be applied to the piston plate 91, thereby pushing the rectangular plate 92 to slowly slide toward the direction of the pliers head 1. At this time, due to the mutual conflict between the rectangular plate 92 and the tissue clamp and the mutual conflict between the tissue clamps, the tissue clamp at the head end can be directly pushed into the jaws of the pliers head 1, and the pressing end of the tissue clamp is directly inserted into the card slot 75. Subsequently, due to the mutual conflict between the tissue clamp and the inner wall of the storage tank 8, the mutual conflict between the tissue clamps, and the mutual conflict between the rectangular plate 92 and the tissue clamp, the piston push rod 9 stops moving toward the direction of the pliers head 1, and at this time the positioning groove 61 is just aligned with the piston positioning rod 64;

[0063] It should be noted that, during the process of the tissue clamp sliding into the jaws of the forceps head 1, due to the mutual interference between the tissue clamp and the curved surface of the soft rod 11, the soft rod 11 contracts and deforms, so that the tissue clamp can directly slide into the jaws of the forceps head 1;

[0064] When the piston positioning rod 64 stops moving toward the direction of the clamp head 1, the gas in the storage groove 8 is subsequently injected, so that the pressure in the storage groove 8, the guide groove 62 and the installation groove 71 slowly increases. Since the suction force between the magnetic ring 65 and the piston positioning plate is less than the thrust of the spring 76 on the piston plate 91, the gas first pushes the piston positioning rod 64 downward and inserts it into the positioning groove 61. At this time, due to the mutual interference between the piston positioning rod 64 and the inner wall of the guide groove 62 and the inner wall of the positioning groove 61, the position of the piston push rod 9 in the storage groove 8 can be directly locked. At this time, the operator can determine whether the tissue clamp has reached the jaw position through the operating state of the air pump 53, and then tilt the handle 3 to adjust the position of the clamp head 1 so that the corresponding part of the corresponding tissue is inserted into the tissue clamp. Then the operator starts the air pump 53 again. As the air pressure in the installation groove 71 increases, and at the same time, since the position of the piston push rod 9 has been locked, the piston push rod 9 will not continue to move toward the direction of the clamp head 1, exerting a large squeezing force on the tissue clamp;

[0065] After the downward thrust of the gas in the installation groove 71 on the piston push plate 73 is greater than the upward thrust of the spring 76 on the piston push plate 73, the piston plate 91 pushes the rectangular plate 92 to slowly move vertically downward. Due to the mutual interference between the pressing end of the tissue clamp and the inner wall of the clamping groove 75, the pressing end of the tissue clamp moves vertically downward with the downward movement of the rectangular plate 92 until the spring 76 is compressed to the limit. At this time, the buckle of the tissue clamp is closed, and the tissue clamp is clamped and fixed at the corresponding part of the corresponding tissue, and the installation of the tissue clamp is completed.

[0066] It should be noted that when the rectangular push plate presses the pressing end of the tissue clip, due to the mutual interference between the soft rod 11 and the tail end of the tissue clip, a friction resistance can be applied to the tail end of the tissue clip, so that during the merging process of the tissue clip, the tail end of the tissue clip will not be quickly lifted up to affect the merging of the tissue clip;

[0067] After the installation of the previous tissue clip is completed, as shown in this embodiment, tilt or pull the handle 3 to adjust the position of the clamp head 1 so that the installed tissue clip is removed from the jaws of the clamp head 1. Subsequently, the operator presses the control button for a long time to open the electric control valve 54. Due to the push of the spring 76 on the piston push plate 73 and the pull of the suction force between the magnetic ring 65 and the piston positioning rod 64 on the piston positioning rod 64, the excess gas in the storage tank 8, the guide groove 62 and the installation groove 71 is discharged from the electric control valve 54 of the device. The rectangular pressing plate 74 and the piston positioning rod 64 quickly reset automatically. When the electric control valve 54 stops discharging gas, the operator stops pressing the control button, and the electric control valve 54 closes. At this time, as shown in this embodiment, the subsequent tissue clips are sequentially pushed into the jaws of the clamp head 1, and the position of the clamp head 1 is adjusted, and the tissue clip can be directly installed at the corresponding part of the corresponding tissue at one time.

[0068] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the principles described in the specification are only the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection required by the present invention is defined by the appended claims and their equivalents.

Claims

1. A laparoscopic clip applier with an adjustable clamp head, characterized in that: The clamp comprises a pliers head (1), a main rod (2) and a handle (3), wherein the pliers head (1) and the handle (3) are respectively arranged at two ends of the main rod (2), and one end of the pliers head (1) close to the main rod (2) is inserted into one end of the main rod (2) and is fixedly connected to the main rod (2) through a limiting mechanism (4), and a pressing component (7) is arranged inside the pliers head (1) for pressing the tissue clamp; The other end of the main rod (2) is inserted into one end of the handle (3) and is threadedly connected to the handle (3). A storage groove (8) is provided in the main rod (2) and the chuck, and the storage groove (8) is used to store tissue clips. A piston push rod (9) is provided in the storage groove (8). A positioning assembly (6) is provided in the main rod (2) for constraining and positioning the piston push rod (9). The other end of the handle (3) is provided with an injection assembly (5) for the injection operation in the storage groove (8).

2. A laparoscopic clip applier with an adjustable clamp head according to claim 1, characterized in that: The limiting mechanism (4) comprises two spring sheets (43), two limiting grooves (41) are arranged opposite to each other on both sides of the pliers head (1) close to one end of the main rod (2), a rectangular groove (42) is provided in the main rod (2) at a position corresponding to the limiting groove (41), and the spring sheet (43) is arranged in the corresponding rectangular groove (42), both sides of the spring sheet (43) are fixedly connected to the inner wall of the corresponding rectangular groove (42), and the middle part of the spring sheet (43) is inserted into the corresponding limiting groove (41) and contacts the inner wall of the corresponding limiting groove (41).

3. A laparoscopic clip applier with an adjustable clamp head according to claim 2, characterized in that: Two soft rods (11) with a semicircular cross-section are relatively fixedly installed in the plate wall of the bottom jaw of the pliers head (1), and the middle positions of the arcuate surfaces of the two soft rods (11) are inserted into the storage groove (8).

4. A laparoscopic clip applier with an adjustable clamp head according to claim 3, characterized in that: The piston push rod (9) comprises a piston plate (91) and a rectangular plate (92). The piston plate (91) is fixedly mounted on an end of the rectangular plate (92) away from the pliers head (1), and both the piston plate (91) and the rectangular plate (92) are slidably connected to the inner wall of the storage tank (8).

5. The laparoscopic clip applier with adjustable forceps head according to claim 4, characterized in that: The gas injection assembly (5) comprises an air pump (53); a placement groove (51) is provided at the other end of the handle (3); and the placement groove (51) is connected to the interior of the storage groove (8) through a first connecting hole (52); the air pump (53) is fixedly installed in the placement groove (51), and the exhaust end of the air pump (53) is inserted into the first connecting hole (52); an electric control valve (54) is fixedly installed on the outer peripheral wall of the handle (3), and the air inlet end of the electric control valve (54) is inserted into the first connecting hole (52).

6. The laparoscopic clip applier with adjustable forceps head according to claim 5, characterized in that: The other end of the handle (3) is provided with a rear end cover (55), and a filter plate (56) is fixedly installed in the inner hole of the rear end cover (55).

7. A laparoscopic clip applier with an adjustable clamp head according to claim 6, characterized in that: The positioning assembly (6) comprises a piston positioning rod (64), a plurality of positioning grooves (61) are evenly spaced on the top side of the rectangular plate (92), a guide groove (62) is provided in the main rod (2) at a position corresponding to the positioning groove (61), and the bottom of the guide groove (62) is communicated with the interior of the storage groove (8), and the top of the guide groove (62) is communicated with the interior of the storage groove (8) through a second connecting hole (63), and the piston positioning rod (64) is slidably mounted in the corresponding guide groove (62).

8. The laparoscopic clip applier with adjustable clamp head according to claim 7, characterized in that: The pressing assembly (7) includes a piston push plate (73), a mounting groove (71) is opened in the plate wall of the top jaw of the pliers head (1), and the bottom end opening of the mounting groove (71) is communicated with the interior of the storage groove (8), the interior of the mounting groove (71) is connected with the top of the guide groove (62) through a third connecting hole (72), the piston push plate (73) is slidably installed in the mounting groove (71), and a rectangular pressing plate (74) is fixedly installed on the bottom side of the piston push plate (73), and the rectangular pressing plate (74) is slidably connected to the inner wall of the mounting groove (71).

9. The laparoscopic clip applier with adjustable forceps head according to claim 8, characterized in that: A slot (75) is provided on the bottom side of the rectangular pressure plate (74), and the inner wall of the slot (75) is coplanar with the inner wall of the storage groove (8). A spring (76) is wound around the outer peripheral side of the rectangular pressure plate (74), and the two ends of the spring (76) are respectively fixedly connected to the piston push plate (73) and the inner wall of the installation groove (71).

10. The laparoscopic clip applier with adjustable forceps head according to claim 9, characterized in that: A magnetic ring (65) is provided on the top side of the piston positioning rod (64), and the plug plate of the piston positioning rod (64) is a magnetic plate. The outer peripheral wall of the magnetic ring (65) is fixedly connected to the inner wall of the guide groove (62), and the suction force between the magnetic ring (65) and the piston positioning rod (64) is smaller than the thrust of the spring (76) on the piston push plate (73).

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