CN211325309U - Blood vessel ligature forceps - Google Patents

Abstract

The utility model discloses a pair of blood 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 wire drawing rod; 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 winding a binding wire is arranged on the left side of the spiral track, a telescopic wire pulling rod is arranged between the right side of the spiral track and the right clamp body, and a thread passing seam is formed in the front side of the middle part 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 the ligature is pushed to the blood vessel. During the operation of this design, need not rely on doctor's technique, avoided because doctor's technique is not enough the time waste that leads to, guaranteed going on smoothly of operation, reduce the risk of patient infection.

Description

Blood vessel ligature forceps

Technical Field

The utility model relates to the technical field of medical equipment, in particular to a pair of vascular ligation forceps.

Background

At present, in the operation, often need ligate the blood vessel, and generally the ligature is mainly through manual operation, and the blood vessel ligature mode is comparatively subtle operation, and the degree of difficulty is big, inconvenient, especially to the doctor that the experience is not enough, may have the condition that falls the line or involve the blood vessel, and the line that drops will take up again very trouble, and very waste time, and the blood vessel is dragged and then probably leads to the heavy bleeding, is unfavorable for the safety of operation, normal progression and time control, has increaseed the risk of patient's infection.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving above-mentioned technical problem to a certain extent at least. Therefore, the utility model provides a pair of vascular ligature forceps which is simple to operate.

The utility model provides a technical scheme that its technical problem adopted is: a pair of blood vessel ligature forceps comprises a right forceps body, a left inlay, a spiral track, a knot pushing and line cutting mechanism, a traction trolley and a line drawing 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 end of the first track and the front end of the second track can be communicated with each other 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 winding a binding wire is arranged on the left side of the spiral track, a telescopic wire pulling rod is arranged between the right side of the spiral track and the right clamp body, and a thread passing seam is formed in the front side of the middle part 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 out the knot thread penetrating through the spiral track along the spiral track screwing direction from the thread passing seam, pushing the knot thread to the blood vessel and cutting the knot thread after pushing the knot thread to the blood vessel.

Further, the right clamp body tail is connected with a first hinged holding portion, the left inlay tail is connected with a second hinged holding portion, the middle portions of the first hinged holding portion and the second hinged holding portion are hinged through a hinge shaft, and a first spring capable of pulling the left inlay and the right clamp body in butt joint is connected between the first hinged holding portion and the second hinged holding portion.

Further, the spiral track is screwed from the right clamp body to the left inlay body; the wire sleeving roller, the spiral track and the wire pulling rod are arranged along the axis of the spiral track, the tail end of the spiral track is connected with a section of horizontal track so that the traction trolley can be parked conveniently, and the traction trolley and the wire sleeving roller which are positioned on the horizontal track are flush with the central line of the spiral track.

Further, a mounting plate is arranged on the left side of the right clamp body corresponding to the spiral track, and the wire sleeving 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 plier body; the wire clamping mechanism comprises a sliding clamp plate which is slidably arranged on the mounting plate and a fixing clamp plate which is fixed on the mounting plate, the sliding clamp plate is connected with a second spring which can push the sliding clamp plate to press the fixing clamp plate and tightly press and fix the ligature positioned in the middle, and the sliding clamp plate is connected with a first driving mechanism which can drive the sliding clamp plate to be separated from the fixing clamp plate; the wire hook is connected with a wire hooking driving mechanism which can drive the wire hooking driving mechanism to hook the ligature.

The guide plate is fixed at the bottom of the left inlay and extends forwards, and is provided with a first sliding groove extending forwards; the knot pushing and trimming mechanism comprises a knot pushing head arranged at the front end and trimming mechanisms arranged on two sides, a first guide block matched with the first sliding groove 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 sliding groove; the knot pushing head extends forwards to form an up-down opening shape and is aligned with a ligature which penetrates through the center of the spiral track from the thread covering roller to the thread pulling rod, and the knot pushing head is provided with a conical opening which penetrates through the knot pushing head up and down; the thread cutting mechanism is used for cutting off redundant ligatures on two sides of the knot pushing head.

Further, the thread trimming mechanism comprises two shearing knives hinged with each other and a shearing driving mechanism for driving the shearing knives to shear, and the shearing knives are connected with spring reset pieces capable of enabling the shearing knives to be opened.

Furthermore, the traction trolley comprises a lower clamping block, an upper clamping block, a guide limiting structure and a spring pressing plate; the bottom of the lower clamping block extends downwards to be provided with a connecting part, a reserved groove which penetrates transversely is formed in the connecting part, a rotating shaft is inserted in the reserved groove, rollers are rotatably mounted at two ends of the rotating shaft, the elastic pressing plate is arranged in the reserved groove, and the upper end of the elastic pressing plate and the top wall of the reserved groove are connected with a pressing spring to push the elastic pressing plate to elastically abut against the rotating shaft; the guide limiting structure is used for guiding the lower clamping block to move and 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 so that the upper clamping block and the lower clamping block are attached to clamp the ligature located therein.

Furthermore, the two sides of the lower clamping block extend outwards to form first connecting side plates, correspondingly, the two sides of the upper clamping block extend outwards to form second connecting side plates, and two ends of the clamping spring are fixedly connected to the first connecting side plates and the second connecting side plates respectively.

Furthermore, 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 utility model has the advantages that: the ligature of this design begins from the mantle fiber roller, then pass the spiral track along spiral track precession direction, it is tight and along with the traction trolley along the second track to walk around behind the take-up lever by traction trolley clamp, first track tractive, and finally get into the spiral track and twine the ligature, ligature after the winding is pushed away knot trimming mechanism and is pushed to the blood vessel and cut after pushing away to the blood vessel, accomplish the ligature operation, during this design operation, need not rely on doctor's technique completely, avoided because the time waste that the doctor's technique is not enough leads to, the smooth of having guaranteed the operation is gone on, reduce the risk that the patient infects.

Drawings

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

FIG. 1 is a schematic view 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 taken at A-A of FIG. 2;

FIG. 4 is a schematic diagram of a knot pushing and thread cutting mechanism;

FIG. 5 is a schematic view of another angular mounting arrangement according to an embodiment;

FIG. 6 is a schematic structural diagram of a push head of another embodiment;

FIG. 7 is a schematic structural view of the wagon;

FIG. 8 is a schematic view of the wagon in an exploded condition;

fig. 9 is a cross-sectional view of the interior of the wagon.

Detailed Description

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

Referring to fig. 1 to 5, the blood 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 trimming mechanism 140, a traction cart 150 and a wire drawing 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 with each other 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 forceps body 110 is connected with a first hinged holding portion 111, the tail of the left inlay 120 is connected with a second hinged holding portion 121, the middle portions of the first hinged holding portion 111 and the second hinged holding portion 121 are hinged through a hinge shaft, and the first hinged holding portion 111 and the second hinged holding portion 121 are arranged in a crossed manner and hinged through a hinge shaft at the crossed position. In order to keep the left inlay 120 and the right forceps body 110 in the assembled state (the state shown in fig. 1), a first spring 113 capable of pulling the left inlay 120 and the right forceps body 110 to be assembled in a butt joint manner is connected between the first hinged holding portion 111 and the second hinged holding portion 121, the first spring 113 is connected to the outer ends of the first hinged holding portion 111 and the second hinged holding portion 121, and the outer ends of the first hinged holding portion 111 and the second hinged holding portion 121 are in a parallel state when in the assembled state. The first spring 113 is always in a stretching state, but 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 hinged holding portion 111 and the second hinged holding portion 121 to bias the first hinged holding portion and the second hinged holding portion to be engaged (engaged). As shown in fig. 2, the left inlay 120 and the right pincer body 110 are both formed by extending one end of the inlay in a straight line and extending one end of the inlay in an 1/4 arc, and the front ends of the inlay are both extended in an arc and can be spliced to form a semicircular structure, and as shown in fig. 3, the cross-section of the left inlay 120 and the cross-section of the right pincer body 110 are rectangular grooves with opposite openings, and the bottom surfaces of the inner walls of the inlay are respectively provided with a first rail 123 and a second rail 112. The front and rear ends (tail ends) 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 first track 123, the second track 112 and the spiral track 130, 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 blood vessel ligation forceps are arc grooves matched with the sphere, the cross section of each arc groove is larger than a half arc and smaller than a whole circle, and the sphere can protrude out of the arc grooves and is connected with the bottom of the connecting portion 154. And because the rotating shaft 155 can move up and down in the preformed groove 1541 to a certain extent, and the elastic pressing plate 158 presses against the rotating shaft, the roller 156 can be adapted to a complex uneven surface, i.e., can move on the spiral track 130, because 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 due to the difference between the spiral motion and the plane motion, and if the direct position relationship between the roller 156 and the guiding and limiting structure 153 is fixed, the roller 156 cannot meet the requirements of the spiral motion and the plane motion at the same time, and the roller 156 may be jammed on the spiral track 130. The shaft 155 and the roller 156 are designed to have a space for up-and-down adjustment. In order to improve the stability of the traction movement, at least one guide wheel (not shown) may be disposed at each of the front and rear sides of the lower clamping block 151, the guide wheels preventing the lower clamping block 151 from rubbing against the first rail 123, the second rail 112 and the planes at both sides of the rail groove 131 when the lower clamping block 151 is tilted back and forth, and the diameter and the center height of the guide wheels are smaller than those of the roller 156 so as to cause the movement to be locked.

A wire covering roller 181 for winding the binding wire is disposed at the left side of the spiral track 130, and a retractable wire pulling rod 160 is disposed between the right side of the spiral track 130 and the right caliper body 110. Specifically, the wire pulling rod 160 is connected to a telescopic motor capable of driving the wire pulling rod to extend and retract, and the telescopic motor is fixed inside the right caliper body 110.

A thread passing seam 132 is formed in 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 due to the existence of the thread passing seam, the spiral track 130 is not continuous, so that a connecting rod 133 is arranged at the upper end of the spiral track 130 to connect the disconnected spiral track 130 into a whole; the wagon 150 is capable of holding a ligature and is capable of moving along the first track 123, the second track 112 and the helical track 130. Preferably, the spiral track 130 is screwed from the right clamp body 110 toward the left inlay 120; the thread covering roller 181, the spiral track 130 and the thread pulling rod 160 are arranged along the axis of the spiral track 130, in order to align the binding thread with the thread passing seam 132 when the binding thread extends from the thread covering roller 181 to the thread pulling rod 160, the thread pushing and cutting mechanism 140 pushes the thread, the end of the spiral track 130 is connected with a section of horizontal track so as to facilitate the parking of the tractor 150, the end of the horizontal track is provided with a baffle plate to prevent the tractor 150 from falling out of the track, the tractor 150 and the thread covering roller 181 on the horizontal track are flush with the center line of the spiral track 130, and the thread passing seam 132 is also flush with the center line, so when the tractor is completely parked on the horizontal track, the thread passing through the center of the spiral track 130 is just flush with the thread 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 urging force due to the arc, but rather will be urged more smoothly without the aforementioned structure. For better tightening and gathering the ligature, a mounting plate 180 is provided at the left side (left side in the view of fig. 2) of the right forceps body 110 corresponding to the spiral rail 130, the thread covering roller 181 is provided on the mounting plate 180, and the right forceps body 110 is correspondingly provided with a U-shaped thread passing hole 122 for passing the ligature therethrough. A wire clamping mechanism and a wire hook 186 are sequentially arranged between the wire covering roller 181 and the right clamp body 110; the wire clamping mechanism comprises a sliding clamp plate 182 which is slidably arranged on the mounting plate 180 and a fixing clamp plate 184 which is fixed on the mounting plate 180, the sliding clamp plate 182 is connected with a second spring 187 which can push the sliding clamp plate 182 to press the fixing clamp plate 184 and tightly fix the ligature positioned in the middle, and the sliding clamp plate 182 is connected with a first driving mechanism 185 which can drive the sliding clamp plate 182 to be separated from the fixing clamp plate 184; the wire hook 186 is connected with a wire hooking driving mechanism capable of driving the wire hook 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, and the telescopic shaft passes through the fixed clamp plate 184 and abuts against the sliding clamp plate 182, one side of the sliding clamp plate 182, which faces away from the fixed clamp plate 184, is provided with a spring connecting plate 183, and two ends of the second spring 187 are respectively connected with the sliding clamp plate 182 and the spring connecting plate 183 to apply a pushing force to the sliding clamp plate 182. When the ligature needs to be tensioned, the first driving mechanism 185 is in a contracted state, the sliding clamping plate 182 and the fixing clamping plate 184 clamp the ligature extending from the thread covering roller 181, and then the thread hooking driving mechanism pulls the thread hook 186 to tension the ligature and gather the ligature to facilitate knot pushing.

The knot pushing and trimming mechanism 140 is used for pushing forward the knot thread penetrating through the spiral track 130 along the screwing direction of the spiral track 130 out of the thread passing seam 132, pushing the knot thread to the blood vessel and trimming the knot thread after pushing the knot thread to the blood vessel. Specifically, a guide plate 170 is further provided, the guide plate 170 is fixed to the bottom of the left inlay 120 and extends forward, and the guide plate 170 is provided with a first sliding groove 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 sliding groove 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 sliding groove; the first sliding slot and the first guide block 142 are dovetail-shaped in cross section. As shown in fig. 4, the pushing head 141 preferably extends forward to be opened up and down and is aligned with the ligature penetrating through the center of the spiral track 130 from the thread covering roller 181 to the thread pulling rod 160, the pushing head 141 is opened in an arc shape (parabola) and is horizontally arranged forward, the pushing head 141 is provided with a conical opening 148 penetrating up and down, the opening of the conical opening 148 is opened forward, the inner end of the conical opening is arc-shaped, the knot is pushed to the blood vessel completely, and the blood vessel is accommodated at the bottom of the conical opening 148 after the knot is pushed to the position. In use, the blood vessel extends up and down relative to the pushing head 141, and the pushing head 141 moves towards the blood vessel, so that the blood vessel automatically enters the tapered opening 148 and finally gathers at the bottom thereof. Therefore, the knot can be pushed to the blood vessel to the maximum extent, and the size of the knot pushing head is prevented from interfering with knot pushing. In other embodiments, the knot-pushing head 141 may be angled as shown in fig. 6. The traditional knot pushing is that the knot is pushed to the blood vessel manually by holding the knot pushing head shown in fig. 6, and obviously, the knot pushing and thread cutting mechanism 140 is not accurate and convenient.

The knot-pushing head 141 aligns with the gap of the spiral track 130 to pass therethrough in case the knot-pushing head 141 interferes with the movement of 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 rod 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 rod.

Preferably, the thread cutting mechanism is provided with two thread cutting mechanisms which are respectively located on the left side and the right side of the knot pushing head 141, the thread cutting mechanism comprises two mutually hinged cutting knives 144 and a cutting driving mechanism for driving the cutting knives 144 to cut, the two cutting knives 144 are crossed and the crossed part is hinged through a hinge shaft, the rotating range of the cutting knives 144 covers the bottom of the parabola of the knot pushing head 141, and therefore the cutting knives 144 can cut off redundant ligatures which are collected on the knot pushing head 141 and extend out of the two sides of the knot. The cutting blades 144 are connected to spring return members which allow them to expand, preferably, as shown in fig. 4, the spring return members are fourth springs 149 connected between the cutting blades 144. The shearing blades 144 are hinged by a hinge shaft, and in other embodiments, the spring return member may be a torsion spring mounted on the hinge shaft, and when the shearing blades 144 are acted only by the spring return member, the opening size thereof is larger than or equal to the opening size of the knot pushing head 141 to prevent the shearing blades from interfering with the knot pushing. Preferably, the shearing driving mechanism comprises a tension line 145 and a winding roller 147, the winding roller 147 is connected with a motor for driving the winding roller 147 to rotate, one end of the tension line 145 is connected with the tail of the shearing knife 144, the other end of the tension line 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 be close to the shearing knife for realizing shearing, in order to arrange the guide for the tension line 145, the shearing knife 144 is conveniently driven, a traction column 146 is further fixed between the shearing knife 144 and the tension line 145 so as to realize good guide for the tension line 145, and the tension force of the tension line 145 can well drive the shearing knife 144 to realize shearing.

The preferred construction of the wagon is described in detail below with reference to figures 7 to 9.

The traction trolley 150 includes a lower clamp block 151, an upper clamp block 152, a guide limit structure 153, and a spring plate 158.

The bottom of the lower clamping block 151 extends downwards to be provided with a connecting part 154, a reserved groove 1541 which penetrates through the connecting part 154 transversely is arranged on the connecting part 154, a rotating shaft 155 is inserted into the reserved groove 1541, in order to enable the rotating shaft 155 to be axially limited, two limiting nuts 1552 which are positioned on two sides of the connecting part 154 are sleeved on the rotating shaft 155 in a sleeved mode, the limiting nuts 1552 are connected and sleeved on the rotating shaft 155 in a threaded mode, the connecting part 154 is limited between the two limiting nuts 1552 in the threaded mode, and therefore axial limiting of the rotating shaft 155 is achieved. The two ends of the rotating shaft 155 are rotatably provided with rollers 156, and the rollers 156 can freely rotate around the axis of the rotating shaft 155. The elastic pressing plate 158 is arranged in the reserved groove 1541, the upper end of the elastic pressing plate 158 is connected with a pressing spring 1581 with the top wall of the reserved groove 1541 so as to push the elastic pressing 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 elastic pressing plate 158 presses the rotating shaft downwards under the action of the pressing spring 1581 so that the roller 156 can be attached to a 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 groove (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 portion 154.

The upper clamping block 152 is arranged above the lower clamping block 151, and a clamping spring 159 is connected between the upper clamping block 152 and the lower clamping block 151 so that the upper clamping block 152 and the lower clamping block 151 are attached to clamp the ligature located therein. The clamping spring 159 is preferably mounted in a structure in which first connecting side plates 1511 are outwardly extended from two sides of the lower clamping block 151, second connecting side plates 1521 are correspondingly outwardly extended from two sides of the upper clamping block 152, two ends of the clamping spring 159 are respectively fixedly connected (welded) to the first connecting side plates 1511 and the second connecting side plates 1521, and the clamping spring 159 is always in a stretched state to clamp the ligature. When the ligature clamp is used, the upper clamping block 152 is pulled up manually, then the ligature is stretched between the upper clamping block 152 and the lower clamping block 151, and the ligature can be clamped by loosening the upper clamping block 152.

For clamp splice 151 and last clamp splice 152 counterpoint accurately down, clamp splice 151 upwards extends and is provided with guide post 1512 down, go up clamp splice 152 and be provided with the guiding hole 1522 that supplies guide post 1512 to insert, guide post 1512 matches with guiding hole 1522 and in order to realize accurate counterpoint to in pulling up clamp splice 152 and putting into the ligature.

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

The design has two forms of pushing and rolling, one is motor drive, 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 journal 1551 is arranged in the center of the roller 156, and the roller 156 is rotatably mounted on the journal 1551 through the central hole 1561; the shell of the rolling motor 157 is fixed at the outer end of the journal 1551 to axially limit the roller 156, the 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 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 is connected to the roller 156 in a manner that an output shaft is disposed at an end of the rolling motor 157 opposite to the roller 156, the output shaft is connected to a turntable 1571, a connection column 1572 inserted into the roller 156 extends from the turntable 1571 toward the roller 156, the connection column 1572 is arranged around a rotation axis, and the roller 156 is provided with corresponding insertion holes 1562 arranged around, so as to realize torque transmission.

Still another pushing mode is manual pushing, a traction structure 1514 is arranged on the side of the lower clamping block 151, the traction structure 1514 is a traction rope, and the surgical operation personnel can hook the traction structure 1514 through a tool to drive the traction trolley 150 to move so as to realize traction of the ligature. The ligature is clamped by the upper clamping block and the lower clamping block, the path tracks (the first track 123, the second track 112 and the spiral track 130) are arranged, only simple pushing is needed, the operation is still simplified, accurate operation is not needed, and the operation difficulty is reduced.

The working principle of the design is as follows:

the thread covering roller 181 covers the thread bundle, and the ligature is first pulled out from the thread covering roller 181, sequentially passes through the U-shaped thread passing hole 122 and the center of the spiral track 130, and is clamped on the traction trolley 150. The tractor 150 is then pushed to move along the first rail 123, the second rail 112 and the spiral rail 130 until the end of the spiral rail 130 is reached, at which time the wire pulling rod 160 is in an extended state, and the ligature is wound around the wire pulling rod 160 and multiple knots are realized due to the guidance of the spiral rail 130. The wire pulling bar 160 is then retracted, the first drive mechanism 185 is retracted, and the slide clamp plate 182 and the clamp plate 184 clamp the ligature extending from the thread covering roller 181. The cord hook 186 pulls the ligature taut to gather the knot to facilitate knot pushing. Subsequently, the second driving mechanism 171 drives the knot-pushing and thread-cutting mechanism 140 to advance, and the two-thread knot is pushed to the blood vessel and cut the thread by the thread-cutting mechanism. Thereby achieving the ligation of blood vessels.

The above embodiments are only used for illustrating the technical solutions of the present invention and are not limited thereto, and any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered by the scope of the technical solutions of the present invention.

Claims (10)

1. A blood vessel ligature forceps is characterized in that: comprises a right clamp body (110), a left inlay (120), a spiral track (130), a knot pushing and trimming mechanism (140), a traction trolley (150) and a wire drawing 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 end of the first track (123) and the front end of the second track (112) can be communicated with each other along with the butt joint and the splicing 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 wire sleeving roller (181) used for bundling and winding a ligature is arranged on the left side of the spiral track (130), a telescopic wire pulling 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 arranged on the front side of the middle part 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 the ligature penetrating through the spiral track (130) along the screwing-in direction of the spiral track (130) out of the thread passing seam (132), pushing the ligature to the blood vessel and trimming the ligature after pushing the ligature to the blood vessel.

2. The blood vessel ligating forceps of claim 1, wherein: the left clamp is characterized in that a first hinged holding portion (111) is connected to the tail of the right clamp body (110), a second hinged holding portion (121) is connected to the tail end of the left inlay (120), the middle portions of the first hinged holding portion (111) and the second hinged holding portion (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 portion (111) and the second hinged holding portion (121).

3. The blood vessel ligating forceps of claim 1, wherein: the spiral track (130) is screwed from the right clamp body (110) to the left inlay (120); the wire sleeving roller (181), the spiral track (130) and the wire pulling rod (160) are arranged along the axis of the spiral track (130), the tail end of the spiral track (130) is connected with a section of horizontal track so that the traction trolley (150) can be parked conveniently, and the traction trolley (150) and the wire sleeving roller (181) on the horizontal track are flush with the central line of the spiral track (130).

4. The blood vessel ligating forceps of claim 1 or 3, wherein: the mounting plate (180) is arranged on the left side of the right clamp body (110) corresponding to the spiral track (130), and the wire sleeving 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 plier body (110);

the wire clamping mechanism comprises a sliding clamp plate (182) which is slidably mounted on the mounting plate (180) and a fixing clamp plate (184) which is fixed on the mounting plate (180), the sliding clamp plate (182) is connected with a second spring (187) which can push the sliding clamp plate to press towards the fixing clamp plate (184) and tightly press and fix the ligature wire positioned in the middle, and the sliding clamp plate (182) is connected with a first driving mechanism (185) which can drive the sliding clamp plate (182) to be separated from the fixing clamp plate (184);

the wire hook (186) is connected with a wire hooking driving mechanism which can drive the wire hook to hook the ligature.

5. The blood vessel ligating forceps of claim 1, wherein: the foldable solar cell module is characterized by further comprising a guide plate (170), wherein the guide plate (170) is fixed to 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 trimming mechanism (140) comprises a knot pushing head (141) arranged at the front end and trimming mechanisms arranged on two sides, a first guide block (142) matched with the first sliding groove 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 sliding groove;

the knot pushing head (141) extends forwards to be in a vertically-opened shape and is aligned with a ligature penetrating through the center of the spiral track (130) from the thread covering roller (181) to the thread pulling rod (160), and the knot pushing head (141) is provided with a conical opening (148) penetrating vertically;

the thread cutting mechanism is used for cutting off redundant ligatures on two sides of the pushing head (141).

6. The blood vessel ligating forceps of claim 5, wherein: the thread cutting mechanism comprises two mutually hinged shearing knives (144) and a shearing driving mechanism for driving the shearing knives (144) to shear, and the shearing knives (144) are connected with spring resetting pieces capable of enabling the shearing knives to be opened.

7. The blood vessel ligating forceps of claim 1, wherein: the traction trolley (150) comprises a lower clamping block (151), an upper clamping block (152), a guide limiting structure (153) and a spring pressing plate (158);

the bottom of the lower clamping block (151) extends downwards to form a connecting part (154), a reserved groove (1541) which penetrates through the connecting part (154) transversely is formed in the connecting part (154), a rotating shaft (155) is inserted into the reserved groove (1541), rollers (156) are rotatably mounted at two ends of the rotating shaft (155), the elastic pressing plate (158) is arranged in the reserved groove (1541), and the upper end of the elastic pressing plate (158) is connected with the top wall of the reserved groove (1541) to push the elastic pressing plate (158) to elastically abut against the rotating shaft (155);

the guide limiting structure (153) is used for guiding the lower clamping block (151) to move, and the guide 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 a clamping spring (159) is connected between the upper clamping block and the lower clamping block (151) so that the upper clamping block (152) and the lower clamping block (151) are attached to clamp the ligature located therein.

8. The blood vessel ligating forceps of claim 7, wherein: the utility model discloses a clamping device, including lower clamp splice (151), upper clamp splice (152), clamping spring (159), lower clamp splice both sides are provided with first connection curb plate (1511) to the outside extension, and corresponding, the outside extension in upper clamp splice (151) both sides is provided with second connection curb plate (1521), fixed connection is respectively on first connection curb plate (1511) and second connection curb plate (1521) at clamping spring (159) both ends.

9. The blood vessel ligating forceps of claim 7, 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).

10. The blood vessel ligating forceps of claim 7, wherein: the guide limiting structure (153) is spherical.

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