CN110559032B

CN110559032B - Blood vessel ligature forceps

Info

Publication number: CN110559032B
Application number: CN201910934634.7A
Authority: CN
Inventors: 李坚
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-09-29
Filing date: 2019-09-29
Publication date: 2024-03-15
Anticipated expiration: 2039-09-29
Also published as: CN110559032A

Abstract

The invention discloses a vessel ligature forceps, which comprises a right forceps body, a left inlay, a spiral track, a knot pushing and trimming mechanism, a traction trolley and a stay wire rod, wherein the left inlay is arranged on the right forceps body; the left inlay and the right clamp body are hinged and are respectively provided with a first track and a second track; the spiral track is communicated with the tail end of the first track, a wire sleeving roller for bundling and tying wires is arranged on the left side of the spiral track, a telescopic stay wire rod is arranged between the right side of the spiral track and the right clamp body, and a wire passing seam is formed in the front side of the middle of the spiral track in the height direction; the traction trolley can clamp the ligature and can move along the first track, the second track and the spiral track; the knot pushing and cutting mechanism is used for pushing the ligature to the blood vessel and cutting the ligature after pushing the ligature to the blood vessel. When the design is used for operation, the doctor technology is not needed, the time waste caused by the insufficient doctor technology is avoided, the smooth operation is ensured, and the risk of infection of a patient is reduced.

Description

Blood vessel ligature forceps

Technical Field

The invention relates to the technical field of medical appliances, in particular to a vessel ligature forceps.

Background

At present, in the operation, the blood vessel is often required to be ligated, and the ligation is usually performed manually, the blood vessel ligation mode is a relatively fine operation, the difficulty is high, the ligature is inconvenient, especially, the situation that the blood vessel is dropped or is involved can exist for doctors with insufficient practical experience, the dropped line is very troublesome to pick up again, the time is wasted, and the blood vessel is involved to possibly cause massive hemorrhage, so that the safety, the normal operation and the time control of the operation are not facilitated, and the risk of infection of patients is increased.

Disclosure of Invention

The present invention aims to solve the above technical problems at least to some extent. To this end, the invention proposes a vessel ligature forceps which is simple to operate.

The technical scheme adopted for solving the technical problems is as follows: a vessel ligature forceps comprises a right forceps body, a left inlay, a spiral track, a knot pushing and thread cutting mechanism, a traction trolley and a stay wire rod; the left inlay and the right clamp body are hinged and are respectively provided with a first track and a second track, and the front ends of the first track and the second track can be communicated along with the butt joint and the splicing of the left inlay and the right clamp body; the spiral track is communicated with the tail end of the first track, a wire sleeving roller for bundling and tying wires is arranged on the left side of the spiral track, a telescopic stay wire rod is arranged between the right side of the spiral track and the right clamp body, and a wire passing seam is formed in the front side of the middle of the spiral track in the height direction; the traction trolley can clamp the ligature and can move along the first track, the second track and the spiral track; the knot pushing and trimming mechanism is used for pushing forward to push ligatures penetrating through the spiral track along the spiral track in the spiral track screwing direction out of the suture passing seam, pushing the ligatures to the blood vessel and trimming the ligatures after pushing the ligatures to the blood vessel.

Further, the right clamp body tail is connected with a first hinged holding part, the left inlay tail end is connected with a second hinged holding part, the middle parts of the first hinged holding part and the second hinged holding part are hinged through a hinged shaft, and a first spring capable of pulling the left inlay and the right clamp body to be spliced in a butt joint mode is connected between the first hinged holding part and the second hinged holding part.

Further, the spiral track is screwed in from the right clamp body to the left inlay direction; the wire sleeving rollers, the spiral track and the wire pulling rod are arranged along the axis of the spiral track, a section of horizontal track is connected to the tail end of the spiral track so that the traction trolley can park, and the traction trolley, the wire sleeving rollers and the central line of the spiral track on the horizontal track are flush.

Further, the left side of the right clamp body is provided with a mounting plate corresponding to the spiral track, and the threading roller is arranged on the mounting plate; a wire clamping mechanism and a wire hook are sequentially arranged between the wire sleeving roller and the right clamp body; the wire clamping mechanism comprises a sliding clamping plate and a fixed clamping plate, wherein the sliding clamping plate is slidably arranged on the mounting plate, the fixed clamping plate is fixed on the mounting plate, the sliding clamping plate is connected with a second spring which can push the sliding clamping plate to press the fixed clamping plate and compress and fix ligatures in the middle, and the sliding clamping plate is connected with a first driving mechanism which can drive the sliding clamping plate to be separated from the fixed clamping plate; the wire hook is connected with a wire hooking driving mechanism which can drive the wire hook to hook the ligature wire.

Further, the inlay card comprises a guide plate, wherein the guide plate is fixed at the bottom of the left inlay and extends forwards, and the guide plate is provided with a first chute extending forwards; the knot pushing and trimming mechanism comprises a knot pushing head arranged at the front end and trimming mechanisms arranged at two sides, a first guide block matched with the first chute is arranged at the bottom of the knot pushing and trimming mechanism, and the knot pushing and trimming mechanism is connected with a second driving mechanism capable of driving the knot pushing and trimming mechanism to move along the first chute; the knot pushing head is a ligature which extends forwards and is in an up-down opening shape and is aligned with the center of the spiral track penetrating through the stay wire rod from the stay wire roller, and is provided with a conical opening penetrating up and down; the thread cutting mechanism is used for cutting off redundant ligatures on two sides of the knot pushing head.

Further, the wire cutting mechanism comprises two mutually hinged cutting knives and a cutting driving mechanism for driving the cutting knives to cut, and the cutting knives are connected with spring reset pieces capable of enabling the cutting knives to open.

Further, the traction trolley comprises a lower clamping block, an upper clamping block, a guiding and limiting structure and a spring plate; the bottom of the lower clamping block is provided with a connecting part in a downward extending mode, the connecting part is provided with a reserved groove which penetrates transversely, a rotating shaft is inserted in the reserved groove, rollers are rotatably arranged at two ends of the rotating shaft, the spring plate is arranged in the reserved groove, and the upper end of the spring plate is connected with the top wall of the reserved groove so as to push the spring plate to elastically prop against the rotating shaft; the guiding and limiting structure is used for guiding the lower clamping block to move and is connected to the bottom of the connecting part; the upper clamping block is arranged above the lower clamping block, and a clamping spring is connected between the upper clamping block and the lower clamping block to enable the upper clamping block to be attached to the lower clamping block and clamp ligature positioned in the upper clamping block.

Further, the lower clamp splice both sides outwards extend and are provided with first connection curb plate, corresponding, go up the clamp splice both sides outwards extend and be provided with the second connection curb plate, clamping spring both ends are fixed connection respectively on first connection curb plate and second connection curb plate.

Further, the roller is connected with a rolling motor for driving the roller to rotate, and the rolling motor is fixed at the end part of the rotating shaft.

Further, the guiding and limiting structure is spherical.

The beneficial effects of the invention are as follows: the ligature of this design is from the cover line roller beginning, then pass spiral track along spiral track precession direction, walk around behind the tensioning lever and be pressed from both sides tightly by the traction trolley and along traction trolley along second track, first track tractive, and finally get into spiral track and twine the ligature, the ligature after twining is pushed to the blood vessel by the knot of pushing away wire shearing mechanism and is sheared after pushing away to the blood vessel, accomplish the ligature operation, during the operation of this design, need not rely on the doctor technique completely, avoided because the time waste that the doctor technique is not enough leads to, guaranteed going on smoothly of operation, reduce patient's risk of infecting.

Drawings

The invention will be further described with reference to the drawings and examples.

FIG. 1 is a schematic diagram of a mounting structure according to one embodiment;

FIG. 2 is a top view of a mounting structure according to one embodiment;

FIG. 3 is a cross-sectional view at A-A of FIG. 2;

FIG. 4 is a schematic view of a structure of the knot clipper;

FIG. 5 is a schematic view of another angular mounting structure according to one embodiment;

FIG. 6 is a schematic view of a pushing knot of another embodiment;

FIG. 7 is a schematic structural view of a traction cart;

FIG. 8 is a schematic diagram of a traction cart in an exploded state;

fig. 9 is an internal cross-sectional view of the traction cart.

Detailed Description

The invention will now be described in detail with reference to the drawings and examples.

Referring to fig. 1 to 5, a vessel ligature forceps of the present invention includes a right forceps body 110, a left inlay 120, a spiral track 130, a knot-pushing and thread-cutting mechanism 140, a traction trolley 150, and a stay wire rod 160.

The left inlay 120 and the right clamp body 110 are hinged and are respectively provided with a first rail 123 and a second rail 112, and the front ends of the first rail 123 and the second rail 112 can be communicated along with the butt joint and the splicing of the left inlay 120 and the right clamp body 110. Specifically, the tail of the right pliers body 110 is connected with a first hinged holding part 111, the tail of the left inlay 120 is connected with a second hinged holding part 121, the middle parts of the first hinged holding part 111 and the second hinged holding part 121 are hinged through a hinge shaft, and the first hinged holding part 111 and the second hinged holding part 121 are arranged in a crossing manner and are hinged through the hinge shaft at the crossing position. In order to keep the left inlay 120 and the right clamp body 110 in a spliced state (the state shown in fig. 1), a first spring 113 capable of pulling the left inlay 120 and the right clamp body 110 to be spliced is connected between the first hinged holding part 111 and the second hinged holding part 121, the first spring 113 is connected to the outer ends of the first hinged holding part 111 and the second hinged holding part 121, and the outer ends of the first hinged holding part 111 and the second hinged holding part 121 are parallel to each other in the spliced state. The first spring 113 is always in a stretched state, however, in other embodiments, a torsion spring may be disposed at the hinge shaft, and two ends of the torsion spring respectively abut against the first hinge holding portion 111 and the second hinge holding portion 121 so as to be preloaded toward splicing (engagement). As shown in fig. 2, the left inlay 120 and the right clamp body 110 are formed by linearly extending one end and extending one end by 1/4 of an arc, the front ends of the left inlay 120 and the right clamp body 110 are both formed by extending one end in an arc and can be spliced into a semicircular structure, and as shown in fig. 3, the sections of the left inlay 120 and the right clamp body 110 are rectangular grooves with opposite openings, and the bottom surfaces of the inner walls of the left inlay 120 and the right clamp body 110 are respectively provided with a first rail 123 and a second rail 112. The front end and the rear end (tail end) correspond to the upper and lower sides of the view of fig. 2, respectively.

The spiral track 130 is communicated with the tail end of the first track 123, the guiding and limiting structure 153 is matched with the first track 123, the second track 112 and the spiral track 130 and can move along the same, the guiding and limiting structure 153 is preferably a sphere, the track grooves 131 of the first track 123, the second track 112 and the spiral track 130 on the vessel ligature forceps are arc grooves matched with the sphere, the cross section of each arc groove is larger than half an arc and smaller than the whole circle, and the sphere can protrude out of the arc groove to be connected with the bottom of the connecting part 154. And because the rotating shaft 155 can move up and down in the reserved groove 1541 to a certain extent, and the elastic pressing of the elastic pressing plate 158 is added, the roller 156 can cope with complex uneven surfaces, namely, can move on the spiral track 130, because the difference between the spiral motion and the plane motion can cause the difference between the distance between the roller 156 and the first track 123, the distance between the roller 156 and the second track 112 and the distance between the roller 156 and the track groove 131 are different, and if the direct positional relationship between the roller 156 and the guiding and limiting structure 153 is fixed, the roller 156 cannot meet the requirements of spiral motion and plane motion at the same time, and the roller 156 may be blocked on the spiral track 130. The rotation shaft 155 and the roller 156 are designed to have a space for up-down adjustment. To improve stability of traction movement, at least one guide wheel (not shown) may be provided at the front and rear sides of the lower clamp block 151, respectively, the guide wheel preventing friction with the planes of the first rail 123, the second rail 112 and both sides of the rail groove 131 when the lower clamp block 151 is tilted back and forth, and the guide wheel diameter and the center height being smaller than the roller 156 so as to cause movement jam.

The left side of the spiral track 130 is provided with a wire sleeving roller 181 for bundling the ligature, and a telescopic wire pulling rod 160 is arranged between the right side of the spiral track 130 and the right clamp body 110. Specifically, the pull rod 160 is connected to a telescopic motor that can drive the telescopic motor to extend and retract, and the telescopic motor is fixed to the inner side of the right clamp body 110.

A line passing seam 132 is formed on the front side of the middle part of the spiral track 130 in the height direction (the vertical direction in the view angle of fig. 3 is the height direction), and a connecting rod 133 is disposed at the upper end of the spiral track 130 to connect the disconnected spiral track 130 as a whole because the line passing seam is present so that the spiral track 130 is not continuous; the pulling trolley 150 is capable of holding the ligature and moving along the first rail 123, the second rail 112 and the spiral rail 130. Preferably, the spiral track 130 is screwed from the right clamp body 110 toward the left inlay 120; the loop roller 181, the spiral track 130 and the stay wire rod 160 are arranged along the axis of the spiral track 130, when the binding wire extends from the loop roller 181 to the stay wire rod 160, the binding wire is aligned with the wire passing seam 132 to facilitate the pushing of the binding wire by the binding wire pushing mechanism 140, the tail end of the spiral track 130 is connected with a section of horizontal track so that the traction trolley 150 is parked, the tail end of the horizontal track is provided with a baffle to prevent the traction trolley 150 from falling out of the track, the traction trolley 150 on the horizontal track, the loop roller 181 and the central line of the spiral track 130 are flush, and the wire passing seam 132 is also flush with the central line, so that when the traction trolley is completely stopped on the horizontal track, the wire passing through the center of the spiral track 130 is just flush with the wire passing seam 132. Of course, in other embodiments, the three positions need not be flush, and the ligature will eventually pass through the seam 132 under the action of the pushing force due to the arc, but the pushing is smoother without the above structure. For better tightening the ligature, the knots are concentrated, the left side (left side in view of fig. 2) of the right clamp body 110 is provided with a mounting plate 180 corresponding to the spiral track 130, the threading roller 181 is arranged on the mounting plate 180, and the right clamp body 110 is correspondingly provided with a U-shaped wire passing hole 122 for passing through the ligature. A wire clamping mechanism and a wire hook 186 are sequentially arranged between the wire sleeving roller 181 and the right clamp body 110; the thread clamping mechanism comprises a sliding clamping plate 182 which is slidably arranged on the mounting plate 180 and a fixed clamping plate 184 which is fixed on the mounting plate 180, the sliding clamping plate 182 is connected with a second spring 187 which can push the sliding clamping plate 182 to press the fixed clamping plate 184 and tightly press and fix the ligature positioned in the middle, and the sliding clamping plate 182 is connected with a first driving mechanism 185 which can drive the sliding clamping plate 182 to be separated from the fixed clamping plate 184; the wire hook 186 is connected with a wire hooking driving mechanism which can drive the wire hooking driving mechanism to hook the ligature, and the wire hooking driving mechanism is preferably a telescopic motor 188 to drive the wire hook 186 to stretch and retract. The first driving mechanism 185 is preferably a telescopic motor, the telescopic shaft passes through the fixed clamping plate 184 to prop against the sliding clamping plate 182, a spring connecting plate 183 is arranged on one side of the sliding clamping plate 182, which is opposite to the fixed clamping plate 184, and two ends of the second spring 187 are respectively connected with the sliding clamping plate 182 and the spring connecting plate 183 to apply pushing force to the sliding clamping plate 182. When the ligature needs to be pulled, the first driving mechanism 185 is in a contracted state, the sliding clamping plate 182 and the fixed clamping plate 184 clamp the ligature extending from the loop roller 181, and then the hooking driving mechanism pulls the wire hook 186 to tighten the ligature and concentrate the ligature to facilitate pushing the ligature.

The knot-pushing and thread-cutting mechanism 140 is used for pushing forward to push out the ligature which penetrates the spiral track 130 along the screwing direction of the spiral track 130 from the suture passing seam 132, pushing the ligature to the blood vessel and cutting the ligature after pushing the ligature to the blood vessel. Specifically, a guide plate 170 is further provided, the guide plate 170 is fixed at the bottom of the left inlay 120 and extends forward, and the guide plate 170 is provided with a first chute extending forward; the knot pushing and trimming mechanism 140 comprises a knot pushing head 141 arranged at the front end and trimming mechanisms arranged at two sides, a first guide block 142 matched with the first chute is arranged at the bottom of the knot pushing and trimming mechanism 140, and the knot pushing and trimming mechanism 140 is connected with a second driving mechanism 171 capable of driving the knot pushing and trimming mechanism to move along the first chute; the first chute and the first guide block 142 are dovetail-shaped in cross section. As shown in fig. 4, the knot pushing head 141 is preferably a ligature wire extending forward and being opened up and down and aligned with the center of the spiral track 130 from the wire sleeve 181 to the wire pulling rod 160, the knot pushing head 141 is arc-opened (parabolic) and the opening is horizontally arranged forward, the knot pushing head 141 is provided with a conical opening 148 penetrating up and down, the conical opening 148 is opened forward and the inner end is arc-shaped for pushing the knot to the blood vessel completely, and after pushing in place, the blood vessel is accommodated at the bottom of the conical opening 148. In use, the blood vessel extends vertically relative to the pushing knot 141, the pushing knot 141 moves towards the blood vessel, and the blood vessel automatically enters the tapered opening 148 and finally closes at the bottom thereof. Thus, the knot can be pushed to the blood vessel to the greatest extent, and the interference of the size of the knot pushing head to the knot pushing head is avoided. In other embodiments, the push knot 141 may be angled as shown in fig. 6. The conventional knot pushing is to manually push the knot toward the blood vessel by holding the knot pushing head shown in fig. 6, and it is obvious that the knot pushing and trimming mechanism 140 is not accurate and convenient.

The knot pushing head 141 is aligned with the gap of the spiral track 130 so as to pass therethrough to prevent the knot pushing head 141 from having a motion interference with the spiral track 130. The thread cutting mechanism is used for cutting off redundant ligatures on two sides of the knot pushing head 141. The second driving mechanism 171 is preferably a motor, a screw is connected to the second driving mechanism 171, and the knot-pushing thread cutting mechanism 140 is provided with a screw hole 143 matched with the screw.

Preferably, the thread cutting mechanism is provided with two thread cutting blades 144 hinged to each other and a cutting driving mechanism for driving the two thread cutting blades 144 to cut, and the two thread cutting blades 144 are crossed and the crossing part is hinged through a hinge shaft, and the rotating range of the thread cutting blades 144 covers the parabolic bottom of the knot pushing head 141, so that the thread cutting blades 144 can cut off the redundant ligature wires extending from both sides of the knot drawn on the knot pushing head 141. The shear blades 144 are connected to a spring return that allows them to expand, preferably as shown in fig. 4, the spring return is a fourth spring 149 connected between the shear blades 144. The shearing blade 144 is hinged by a hinge shaft, and in other embodiments, the spring return may be a torsion spring mounted on the hinge shaft and having a splay size greater than or equal to the splay size of the push knot head 141 to prevent interference with the push knot when the shearing blade 144 is acted upon by the spring return only. Preferably, the shearing driving mechanism comprises a tensioning wire 145 and a winding roller 147, the winding roller 147 is connected with a motor for driving the tensioning wire 145 to rotate, one end of the tensioning wire 145 is connected with the tail of the shearing knife 144, the other end of the tensioning wire is connected to the winding roller 147, the winding roller 147 is driven by the motor to rotate so as to drive the shearing knife 144 to approach to the shearing knife 144 for shearing, a traction column 146 is further fixed between the shearing knife 144 and the tensioning wire 145 so as to realize good guiding on the tensioning wire 145, and the shearing knife 144 can be driven by the pulling force of the tensioning wire 145 to realize shearing.

The preferred construction of the traction cart is described in detail below from fig. 7 to 9.

The traction trolley 150 comprises a lower clamping block 151, an upper clamping block 152, a guiding limit structure 153 and a spring plate 158.

The bottom of the lower clamping block 151 extends downwards to be provided with a connecting portion 154, a reserved groove 1541 which transversely penetrates through is formed in the connecting portion 154, a rotating shaft 155 is inserted in the reserved groove 1541, two limit nuts 1552 which are positioned on two sides of the connecting portion 154 are sleeved on the rotating shaft 155 for limiting the axial direction of the rotating shaft 155, and the limit nuts 1552 are screwed and sleeved on the rotating shaft 155, so that the connecting portion 154 is limited between the two limit nuts 1552, and the axial limiting of the rotating shaft 155 is realized. The rollers 156 are rotatably mounted at two ends of the rotating shaft 155, and the rollers 156 can freely rotate around the axis of the rotating shaft 155. The spring plate 158 is disposed in the reserved groove 1541, the upper end of the spring plate 158 is connected with a compression spring 1581 with the top wall of the reserved groove 1541 to push the spring plate 158 to elastically abut against the rotating shaft 155, the rotating shaft 155 can move up and down in the reserved groove 1541, and the spring plate 158 presses the rotating shaft downwards under the action of the compression spring 1581 so that the roller 156 can be attached to the rolling surface to realize rolling forward. The guiding and limiting structure 153 is used for guiding the lower clamping block 151 to move, the guiding and limiting structure 153 is matched with the sliding grooves (the first rail 123, the second rail 112 and the rail groove 131 of the spiral rail 130) to realize guiding and moving, and the guiding and limiting structure 153 is connected to the bottom of the connecting part 154.

The upper clamping block 152 is disposed above the lower clamping block 151 with a clamping spring 159 connected therebetween to clamp the ligature therein by the upper clamping block 152 and the lower clamping block 151. The mounting structure of the clamping spring 159 is preferably that the two sides of the lower clamping block 151 are provided with a first connecting side plate 1511 extending outwards, and the two sides of the upper clamping block 152 are provided with a second connecting side plate 1521 extending outwards correspondingly, two ends of the clamping spring 159 are respectively and fixedly connected (welded) to the first connecting side plate 1511 and the second connecting side plate 1521, and the clamping spring 159 is always in a stretched state to clamp ligatures. In use, the ligature is clamped by manually pulling up the upper clamp block 152 and then extending the ligature between the upper clamp block 152 and the lower clamp block 151 and releasing the upper clamp block 152.

For accurate alignment of the lower clamp block 151 and the upper clamp block 152, the lower clamp block 151 is provided with a guide post 1512 extending upwards, the upper clamp block 152 is provided with a guide hole 1522 for the guide post 1512 to be inserted, and the guide post 1512 is matched with the guide hole 1522 to realize accurate alignment so as to be convenient for pulling up the upper clamp block 152 and putting ligature wires into the guide hole.

For better clamping the ligature, the first gasket 1513 is attached to the bonding surface (upper surface) of the lower clamping block 151, the second gasket 1523 is attached to the bonding surface (lower surface) of the upper clamping block 152, and the first gasket 1513 and the second gasket 1523 are made of rubber materials, so that the ligature can be well clamped, and the ligature has a good friction coefficient.

The present design has two pushing and rolling modes, one is motor driven, as shown in fig. 7 to 9, the roller 156 is connected with a rolling motor 157 for driving the roller to rotate, and the rolling motor 157 is fixed at the end of the rotating shaft 155. Specifically, journals 1551 are arranged at two ends of the rotating shaft 155, a central hole 1561 in clearance fit with the journals 1551 is arranged in the center of the roller 156, and the roller 156 is rotatably mounted on the journals 1551 through the central hole 1561; the outer shell of the rolling motor 157 is fixed at the outer end of the journal 1551 to realize axial limit of the roller 156, the outer shell of the rolling motor 157 can be fixed on the outer end face of the journal 1551 through welding, a threaded column can be fixed on the outer shell of the rolling motor 157, a threaded hole matched with the threaded column is formed in the center of the journal 1551, and the rolling motor 157 is fixedly connected with the journal 1551 through threaded connection. The rolling motor 157 and the roller 156 are connected in such a way that an output shaft is disposed at one end of the rolling motor 157 opposite to the roller 156, the output shaft is connected with a rotary disc 1571, the rotary disc 1571 extends toward the roller 156 to form a connecting column 1572 inserted into the roller 156, the connecting column 1572 is circumferentially arranged around the rotation axis, and the roller 156 is provided with corresponding circumferentially arranged insertion holes 1562, so as to realize torque transmission.

In addition, the pushing mode is manual pushing, a traction structure 1514 is arranged on the side portion of the lower clamping block 151, the traction structure 1514 is a traction rope, and an operator can hook the traction structure 1514 through a tool to drive the traction trolley 150 to move so as to achieve traction of the ligature. The upper and lower clamp blocks clamp the ligature, and the path rails (the first rail 123, the second rail 112 and the spiral rail 130) are already arranged, only simple pushing is needed, the operation is still simplified, and the operation is not needed accurately, so that the operation difficulty is reduced.

The working principle of the design is as follows:

the wire bundle is sleeved on the wire sleeve roller 181, and the ligature wire is pulled out from the wire sleeve roller 181, sequentially passes through the U-shaped wire passing hole 122 and the center of the spiral track 130, and is clamped on the traction trolley 150. The pulling trolley 150 is then pushed along the first rail 123, the second rail 112 and the spiral rail 130 until it moves to the end of the spiral rail 130, at which time the pulling rod 160 is in an extended state, the ligature is wound around the pulling rod 160 and multiple knots are achieved due to the guiding of the spiral rail 130. The wire rod 160 is then retracted and the first drive mechanism 185 is also retracted, and the slide clamp 182 and the clamp plate 184 clamp the ligature extending from the sleeve roller 181. The wire hook 186 tightens the ligature to concentrate the knot to facilitate pushing the knot. The second drive mechanism 171 then drives the knot-pushing thread-cutting mechanism 140 forward, pushing the two knots to the vessel and cutting the thread by the thread-cutting mechanism. Thereby achieving vessel ligation.

The above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and any modifications or equivalent substitutions without departing from the spirit and scope of the present invention should be covered in the scope of the technical solution of the present invention.

Claims

1. A vessel ligature forceps, characterized in that: comprises a right clamp body (110), a left inlay (120), a spiral track (130), a knot pushing and thread cutting mechanism (140), a traction trolley (150) and a stay wire rod (160);

the left inlay (120) and the right clamp body (110) are hinged and are respectively provided with a first track (123) and a second track (112), and the front ends of the first track (123) and the second track (112) can be communicated along with the butt joint of the left inlay (120) and the right clamp body (110);

the spiral track (130) is communicated with the tail end of the first track (123), a threading roller (181) for binding and tying a wire is arranged on the left side of the spiral track (130), a telescopic stay wire rod (160) is arranged between the right side of the spiral track (130) and the right clamp body (110), and a wire passing seam (132) is formed in the front side of the middle of the spiral track (130) in the height direction;

the traction trolley (150) can clamp the ligature and can move along the first track (123), the second track (112) and the spiral track (130);

the knot pushing and trimming mechanism (140) is used for pushing forward to push ligatures penetrating through the spiral track (130) along the screwing direction of the spiral track (130) out of the suture passing seam (132) and pushing the ligatures to a blood vessel and trimming the ligatures after pushing the ligatures to the blood vessel;

the spiral track (130) is screwed in from the right clamp body (110) to the left inlay (120); the wire sleeving rollers (181), the spiral tracks (130) and the wire pulling rods (160) are arranged along the axis of the spiral tracks (130), one section of horizontal track is connected to the tail end of each spiral track (130) so that the traction trolley (150) can park, and the traction trolley (150) and the wire sleeving rollers (181) on the horizontal track are flush with the central line of each spiral track (130);

the left side of the right clamp body (110) is provided with a mounting plate (180) corresponding to the spiral track (130), and the threading roller (181) is arranged on the mounting plate (180); a wire clamping mechanism and a wire hook (186) are sequentially arranged between the wire sleeving roller (181) and the right clamp body (110); the thread clamping mechanism comprises a sliding clamping plate (182) which is slidably arranged on the mounting plate (180) and a fixed clamping plate (184) which is fixed on the mounting plate (180), the sliding clamping plate (182) is connected with a second spring (187) which can push the sliding clamping plate to press the fixed clamping plate (184) and tightly press and fix the ligature positioned in the middle, and the sliding clamping plate (182) is connected with a first driving mechanism (185) which can drive the sliding clamping plate to be separated from the fixed clamping plate (184); the wire hook (186) is connected with a wire hooking driving mechanism capable of driving the wire hook to hook the ligature wire;

the inlay card further comprises a guide plate (170), wherein the guide plate (170) is fixed at the bottom of the left inlay (120) and extends forwards, and the guide plate (170) is provided with a first sliding groove extending forwards; the knot pushing and thread cutting mechanism (140) comprises a knot pushing head (141) arranged at the front end and thread cutting mechanisms arranged at two sides, a first guide block (142) matched with the first sliding groove is arranged at the bottom of the knot pushing and thread cutting mechanism (140), and the knot pushing and thread cutting mechanism (140) is connected with a second driving mechanism (171) capable of driving the knot pushing and thread cutting mechanism to move along the first sliding groove; the knot pushing head (141) is a ligature which extends forwards and is in an up-down opening shape and is aligned with the center of the spiral track (130) which penetrates through the stay wire rod (160) from the stay wire roller (181), and the knot pushing head (141) is provided with a conical opening (148) which penetrates through up and down; the thread cutting mechanism is used for cutting off redundant ligatures on two sides of the knot pushing head (141);

the traction trolley (150) comprises a lower clamping block (151), an upper clamping block (152), a guiding limiting structure (153) and a spring plate (158); the bottom of the lower clamping block (151) is provided with a connecting part (154) in a downward extending mode, the connecting part (154) is provided with a reserved groove (1541) which transversely penetrates through the connecting part, a rotating shaft (155) is inserted in the reserved groove (1541), rollers (156) are rotatably arranged at two ends of the rotating shaft (155), a spring plate (158) is arranged in the reserved groove (1541), and a compression spring (1581) is connected with the upper end of the spring plate and the top wall of the reserved groove (1541) to push the spring plate (158) to elastically prop against the rotating shaft (155); the guiding and limiting structure (153) is used for guiding the lower clamping block (151) to move, and the guiding and limiting structure (153) is connected to the bottom of the connecting part (154); the upper clamping block (152) is arranged above the lower clamping block (151) and is connected with a clamping spring (159) between the upper clamping block and the lower clamping block (151) to enable the upper clamping block (152) to be attached to and clamp ligatures positioned in the upper clamping block and the lower clamping block.

2. The vessel ligature forceps according to claim 1, wherein: the right clamp body (110) tail is connected with a first hinged holding part (111), the left inlay (120) tail is connected with a second hinged holding part (121), the middle parts of the first hinged holding part (111) and the second hinged holding part (121) are hinged through a hinge shaft, and a first spring (113) capable of pulling the left inlay (120) and the right clamp body (110) to be spliced is connected between the first hinged holding part (111) and the second hinged holding part (121).

3. The vessel ligature forceps according to claim 1, wherein: the wire cutting mechanism comprises two mutually hinged cutting knives (144) and a cutting driving mechanism for driving the cutting knives (144) to cut, and the cutting knives (144) are connected with spring reset pieces capable of enabling the cutting knives to open.

4. The vessel ligature forceps according to claim 1, wherein: the clamping spring is characterized in that first connecting side plates (1511) are outwards arranged on two sides of the lower clamping block (151) in an extending mode, second connecting side plates (1521) are outwards arranged on two sides of the upper clamping block (152) in an extending mode, and two ends of the clamping spring (159) are respectively and fixedly connected to the first connecting side plates (1511) and the second connecting side plates (1521).

5. The vessel ligature forceps according to claim 1, wherein: the roller (156) is connected with a rolling motor (157) for driving the roller to rotate, and the rolling motor (157) is fixed at the end part of the rotating shaft (155).

6. The vessel ligature forceps according to claim 1, wherein: the guiding and limiting structure (153) is spherical.