CN218870361U

CN218870361U - Choledochoscope scissors

Info

Publication number: CN218870361U
Application number: CN202222413166.9U
Authority: CN
Inventors: 何川琦; 张�诚; 杨玉龙; 王晓亮
Original assignee: Shanghai East Hospital Tongji University Affiliated East Hospital
Current assignee: Shanghai East Hospital Tongji University Affiliated East Hospital
Priority date: 2022-09-09
Filing date: 2022-09-09
Publication date: 2023-04-18
Anticipated expiration: 2032-09-09

Abstract

The utility model provides a choledochoscope scissors, include: the outer sleeve comprises a first pipe section and a second pipe section which are connected, the first pipe section is positioned at the front part, the second pipe section is positioned at the tail part and has a bending function, and the handle is connected with the tail end of the second pipe section; the connecting rod is positioned in the outer sleeve, the head end of the connecting rod is connected with the cutter head, and the tail end of the connecting rod is connected with the handle; the cutter head is positioned at the head of the first pipe section, has three structures and is provided with a shearing part, the shearing part comprises two blades, the two blades are connected with the head of the connecting rod, and the two blades are opened and closed through the push-pull connecting rod; the two blades are a blade I and a blade II, wherein the inner sides of the blades are provided with cutting edges. The utility model can be put into and cut off the thread knot through the choledochoscope channel, or the thread knot root presses close to the bile duct mucous membrane to cut off the thread.

Description

Choledochoscope scissors

Technical Field

The utility model relates to a minimally invasive surgical instrument technical field particularly, especially relates to a choledochoscope scissors.

Background

Suture tying is the basic operation of surgical operations, and is used for incision suturing, hemostasis, biliary tract reconstruction and the like. According to different materials, the suture can be divided into: silk threads, pilin threads, absorbable threads, and the like. After the suture is used for performing bile duct wall suture hemostasis and biliary tract reconstruction by using silk thread and common forest thread, the suture can not be absorbed, the suture is remained in the wall of the bile duct, and the suture and the knot are wrapped by the mucous membrane of the bile duct and the hyperplastic cellulose along with the healing of the incision.

Due to the difference of the diameter of the common bile duct, the wall thickness of the bile duct, the suturing technology and the like, the knots on the walls of the bile duct of some patients are large, the suture in the lumen may not be covered or wrapped by the mucous membrane of the bile duct, and the knots outside the bile duct of some patients even can move into the lumen. The exposed pilin lines and knots in the lumen can influence the flow of the bile, and cellulose, bile acid salt, protein and other substances in the bile can be attached to the pilin lines to form bile mud and calculus. Clogging of the bile duct with knots and stones can lead to dilation of the intrahepatic bile duct, cholestasis and formation of intrahepatic bile duct stones.

Clinicians often pay more attention to removing calculus in bile ducts and relieving bile duct stenosis, but neglect bare sutures and knots on the wall of the bile duct, which leads to quick recurrence of calculus. Therefore, in order to reduce the recurrence probability of bile duct stones, free sutures and knots in the lumen of the bile duct must be removed at the same time. The treatment scheme of the suture and the knot which are discovered in the exploration operation of the biliary tract by accident mainly comprises the following steps: 1. in the open abdomen operation, the wall of the bile duct is cut open, the knot is cut off by scissors directly, and then the hemostatic forceps are used for removing the knot; 2. laparoscopic surgery, like open surgery, uses laparoscopic scissors and separation forceps to cut and pull off the ligature in the lumen, but due to the limitation of the visual field, the wall incision of the bile duct is large, and the ligature is difficult to handle; 3. after a choledochoscope operation, a surgical operation or a laparoscopic operation, a T tube is kept in place conventionally, a choledochoscope can enter a choledochosis through a T tube fistula tract after 6 weeks of operation, the whole bile duct cavity is explored gradually, and choledochoscopy is a main method for finding a knot in a bile duct cavity. Due to the lack of instruments under the choledochoscope, the foreign body forceps can drag the thread knots on the superficial layer under the mucous membrane away, most of the thread knots can not be processed, and the laparoscope or the laparotomy common bile duct exploration operation can be carried out again only to remove the thread knots in the bile duct cavity.

SUMMERY OF THE UTILITY MODEL

According to the proposed laparotomy, the wall of the bile duct is incised, the knot is cut off directly by scissors, and then the knot is removed by hemostatic forceps; laparoscopic surgery, using laparoscopic scissors and separating forceps to cut and pull off the knot in the lumen, but due to the limitation of visual field, the incision of the bile duct wall is large, and the knot is difficult to handle; the choledochoscope operation is lack of instruments under the choledochoscope, and the foreign body forceps can drag the thread knot on the lower superficial layer of the mucous membrane away, most of the thread knots can not be processed, the laparoscope or the open common bile duct exploration operation can only be carried out again, and the technical problem of the thread knot in the bile duct cavity is solved, so that the choledochoscope scissors are provided. The utility model mainly utilizes the designed blade structure, thereby putting in and cutting off the thread knot through the choledochoscope clamping passage, or cutting off the thread from the root of the thread knot close to the mucous membrane of the bile duct.

The utility model discloses a technical means as follows:

a choledochoscope scissors comprising: the outer sleeve comprises a first pipe section and a second pipe section which are connected, the first pipe section is positioned at the front part, the second pipe section is positioned at the tail part and has a bending function, and the handle is connected with the tail end of the second pipe section; the connecting rod is positioned in the outer sleeve, the head end of the connecting rod is connected with the cutter head, and the tail end of the connecting rod is connected with the handle; the cutter head is positioned at the head of the first pipe section, has three structures and is provided with a shearing part, the shearing part comprises two blades, the two blades are connected with the head of the connecting rod, and the two blades are opened and closed through a push-pull connecting rod; the two blades are a blade I and a blade II, wherein the inner sides of the blades are provided with cutting edges.

Further, the blade is of a first structure and is connected with the connecting rod and the first pipe section;

the pipe wall of the head end of the first pipe section is provided with a longitudinal opening, and a transverse shaft is arranged in the longitudinal opening; the blade II is rotatably connected to the pipe wall of the first pipe section at the longitudinal opening through a transverse shaft, and rotates in the longitudinal opening in the opening and closing process;

the tool bit further comprises a base, the base is installed at the head end of the connecting rod, the tail portion of the blade I is fixed to the base, the body portion and the tail portion of the blade II are respectively provided with a connecting hole I and a connecting hole II, the cross shaft of the first pipe section penetrates through the connecting hole I, a T-shaped protruding shaft is arranged on one side of the head end of the base, and the protruding shaft penetrates through the connecting hole II and is connected with the tail portion of the blade II in a rotating mode.

Furthermore, the blade I is L-shaped, the blade II is 7-shaped, the two blades are shaped like crab pincers after being opened, the suture easily enters the jaw of the cutter head, and the suture can be prevented from falling off after being occluded.

Further, the blade may be in a second configuration, coupled to the connecting rod and the first tubular segment;

two longitudinal openings are symmetrically arranged on two sides of the pipe wall at the head end of the first pipe section, transverse shafts are arranged in the longitudinal openings, and the blades I and the blades II are symmetrically arranged and are respectively connected to the pipe wall of the first pipe section at the longitudinal openings on the two sides through the transverse shafts; a long groove is formed in the side part below each blade, and the transverse shaft is connected in the long groove in a sliding manner; in the opening and closing process, the blade I and the blade II rotate in the longitudinal openings at two sides;

the tool bit further comprises a base, the head of the base is square and is mounted at the head end of the connecting rod, T-shaped rods are arranged on the side walls of the base, round holes are formed in the tail of each blade, the T-shaped rods are rotatably connected with the round holes of the two blades, and the two blades are connected to the base through the round holes.

Furthermore, the blade I and the blade II are both L-shaped.

Further, the blade can also be in a third structure and is connected with the connecting rod;

the tool bit further comprises an elastic piece I, an elastic piece II, a push rod and a base, the two blades are axially vertical to the elastic piece, and the blades I and the blades II are symmetrically arranged; the head of the base is square, the side wall of the base is provided with a T-shaped rod, the tail of each blade is provided with a round hole, the T-shaped rod is rotatably connected with the round holes of the two blades, and the two blades are connected to the base through the round holes; the lower part of the base is connected with the upper end of an inverted T-shaped push rod;

the tail ends of the elastic piece I and the elastic piece II are fixedly connected with the connecting rod, the head ends of the elastic piece I and the elastic piece II are respectively connected with the tail parts of the blade I and the blade II, the elastic piece I is arranged at the same side of the blade II, and the elastic piece II is arranged at the same side of the blade I;

the connecting rod is pushed forwards, is attached to the push rod and pushes the cutter head out of the outer sleeve through the elasticity of the elastic sheet; the connecting rod is pulled back, the elastic sheet is stretched, the cutter head enters the outer sheath tube, and under the action of the reverse force of the outer sheath tube, the blade is gradually closed and cuts the suture.

Furthermore, the blade I and the blade II are both L-shaped.

Furthermore, the outer sides of the blade I and the blade II are both arc-shaped, and the biliary tract forceps and bile duct mucous membranes are not damaged.

Further, the outer sides of the blades I and the blades II protrude to prevent the scissors from completely entering the sheath after being tightened.

Furthermore, the outer sleeve is a single-channel pipe, and the second pipe section is formed by spirally stacking steel wires.

Compared with the prior art, the utility model has the advantages of it is following:

1. the utility model provides a choledochoscope scissors, for special apparatus under the choledochoscope, can put into and cut off the knot through the choledochoscope pincers way, or press close to the bile duct mucous membrane from the knot root and cut off the suture.

2. The utility model provides a choledochoscope scissors can be first structure: the outer sides of two blades in the cutter head are arc-shaped, so that the biliary tract forceps channel and the bile duct mucous membrane are not damaged; two blades in the cutter head are respectively in an L shape and a 7 shape, the shape is like a crab forceps after the two blades are opened, a suture easily enters a jaw of the cutter head, and the suture can be prevented from falling off after occlusion; one blade in the cutter head is fixed on the cutter holder, the other blade is connected with the tube wall of the outer sheath and the base through the shaft, and the maximum opening can be obtained through the minimum displacement of the base, so that a suture can enter the jaw of the cutter head; two blades are gradually closed and cut off the suture line in the cutter head in the pulling-back process, the cutter head is continuously pulled back, the cutter head gradually enters the outer sheath tube, the fixed blade pushes the cutter seat to move towards the opposite side under the extrusion action of the outer sheath tube, the cutting force of the two blades is increased, and the suture line is cut off more easily.

3. The utility model provides a choledochoscope scissors, still can be for the second kind of structure: the outer sides of two blades in the cutter head are arc-shaped, so that the biliary tract forceps channel and the bile duct mucous membrane are not damaged; two blades in the cutter head are bilaterally symmetrical and are L-shaped, the cutter head is like a crab forceps after being opened, a suture easily enters a jaw of the cutter head, and the suture can be prevented from falling off after being occluded; two blades in the cutter head are fixed on the base of the cutter head and the pipe wall of the sheath through a rod and a shaft, and when the connecting rod is pushed and pulled, the blades slide on the cross rod to control the opening and closing of the blades.

4. The utility model provides a choledochoscope scissors, still can be for the third kind structure: the outer sides of two blades in the cutter head protrude, and the scissors are placed and tightened to completely enter the sheath tube; two blades in the cutter head are bilaterally symmetrical and are L-shaped, and the cutter head automatically opens through the elasticity of the elastic sheet when positioned in the sheath tube; the connecting rod is pulled back, the elastic sheet is elongated, the cutter head enters the outer sheath tube along with the elastic sheet, and the blade is gradually closed and cuts the suture line under the reverse force action of the outer sheath tube; the knife head is provided with a push rod which pushes the connecting rod forwards, and the connecting rod is attached to the push rod and can push the knife head out of the sheath tube.

In conclusion, the technical scheme of the utility model can solve the problems that the wall of the bile duct is cut open, the knot is cut off by scissors directly, and then the knot is removed by the hemostatic forceps in the existing abdomen-opening operation; laparoscopic surgery, cut and drag off the lumen suture knot with laparoscopic scissors and separation forceps, but because of the restriction of visual field, the wall incision of bile duct is bigger, the suture knot is more difficult to handle; the choledochoscope operation, owing to lack the apparatus under the choledochoscope, use foreign matter pincers can drag the line knot of mucous membrane lower floor outside, most line knots still can't be handled, can only carry out peritoneoscope once more or open the abdomen common bile duct and explore the operation, clear away the problem of bile duct intracavity line knot.

Based on the reason, the utility model discloses can extensively promote in fields such as medical treatment.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is a schematic structural view of a choledochoscope scissors according to embodiment 1 of the present invention.

Fig. 2 is a schematic structural view of the closing of the tool bit in embodiment 1 of the present invention.

Fig. 3 is a schematic view of a T-shaped protruding shaft in embodiment 1 of the present invention.

Fig. 4 is a schematic structural view of the cutter head opening in embodiment 1 of the present invention.

Fig. 5 is a schematic structural view of the embodiment 1 of the present invention in which the cutter head is not completely opened.

Fig. 6 is a schematic structural view of choledochoscope scissors according to embodiment 2 of the present invention.

Fig. 7 is a schematic structural view of closing of a cutter head in embodiment 2 of the present invention.

Fig. 8 is a schematic view of a T-shaped rod in embodiment 2 of the present invention.

Fig. 9 is a schematic structural view of the cutter head opening in embodiment 2 of the present invention.

Fig. 10 is a schematic structural view of the embodiment 2 of the present invention in which the cutter head is not completely opened.

Fig. 11 is a schematic structural view of choledochoscope scissors according to embodiment 3 of the present invention.

Fig. 12 is a schematic structural view of the knife head in embodiment 3 of the present invention.

Fig. 13 is a schematic structural view of closing of the cutter head in embodiment 3 of the present invention.

Fig. 14 is a schematic structural view of the cutter head completely closed according to embodiment 3 of the present invention.

In the figure: 1. an outer sleeve; 2. a connecting rod; 3. a cutter head; 4. a handle; 5. a blade I; 6. and a blade II.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

In order to overcome the defects in the prior art and combine different surgical schemes to treat the defects of the thread knots, as shown in fig. 1-5, the utility model provides a choledochoscope single-foot scissors, which is a minimally invasive surgical instrument used for clearing away suture loops.

Choledochoscope single-leg scissors include outer tube 1, connecting rod 2, tool bit 3 and handle 4, and the outer tube is the single channel pipe, including first pipeline section and second pipeline section, and first pipeline section is located the front portion, and head end one side pipe wall is equipped with indulges a mouthful, has the cross axle in, and the second pipeline section is piled up by the steel wire spiral and is formed, and the flexible, the handle links to each other with the tail end of second pipeline section. The connecting rod is positioned in the outer sleeve, the head end of the connecting rod is connected with the cutter head, and the tail end of the connecting rod is connected with the handle; the cutter head is positioned at the head part of the first pipe section.

The cutter head comprises a blade I5, a blade II 6 and a base, wherein the blade I is L-shaped and is fixed on the base, the base is fixed at the head end of the connecting rod, and the inner side of the blade I is a cutting edge; the blade II is 7 characters, the inner side of the blade II is a cutting edge, the body part and the tail part are provided with a connecting hole I and a connecting hole II, the cross shaft of the first pipe section passes through the connecting hole I, the blade II can rotate around the cross shaft, and in the rotating process, the blade II is positioned in the longitudinal opening. A T-shaped protruding shaft is arranged on one side of the head end of the base and passes through a connecting hole II, and the blade II is rotatably connected with the protruding shaft. The utility model can be put in through the choledochoscope forceps channel for cutting off the seam coil.

After the thread in the bile duct cavity is found under the choledochoscope, the scissors are placed in the choledochoscope clamping passage, when the head end of the scissors enters the visual field, the handle is released to enable the cutter head to move out of an outer sheath tube (outer sleeve tube), the direction and the depth of the choledochoscope are adjusted, the cutter head end of the hook cutter is used for gripping a thread knot, the handle is tightened, the two cutter head ends of the cutter head are closed, and the cutter head of the handle is further tightened to enter the outer sheath tube to cut off the thread.

The utility model discloses a special apparatus under choledochoscope, can put into and cut off the knot through the choledochoscope forceps channel, or press close to the bile duct mucous membrane from the knot root and cut off the suture.

The outer sides of the two blades in the tool bit of the utility model are arc-shaped, and the utility model has no damage to the biliary tract forceps channel and the bile duct mucous membrane.

The utility model discloses a two pieces of blades are L shape and 7 fonts respectively in the tool bit, open the back and appear like crab pincers, and the suture gets into the tool bit tiger mouth easily, can prevent after the interlock that the suture from droing.

The utility model discloses a blade is fixed on blade holder (base) in the tool bit, and another piece of blade passes through hub connection epitheca pipe wall and base, and the biggest opening can be obtained to the displacement that the base is minimum, is favorable to the suture to get into in the tool bit tiger mouth.

The utility model discloses an in the tool bit two pieces of blade progressively closed and cut off the suture in the pullback in-process, continue the pullback tool bit, the tool bit progressively gets into in the sheath pipe, under sheath pipe squeezing action, fixed blade pushes away the tool holder and removes to the offside, increases the cutter force of two pieces of blades, cuts off the suture more easily.

Example 2

Incision and suture are basic operations of surgical operations, and the suture can be divided into: silk threads, pilin threads, absorbable threads, and the like. After the suture is used for performing bile duct wall suture hemostasis and biliary tract reconstruction by using silk thread and common forest thread, the suture can not be absorbed, the suture is remained in the wall of the bile duct, and the suture and the knot are wrapped by the mucous membrane of the bile duct and the hyperplastic cellulose along with the healing of the incision.

Due to the difference of the diameter of the common bile duct, the wall thickness of the bile duct, the suturing technology and the like, the knots on the walls of the bile duct of some patients are large, the suture in the lumen may not be covered or wrapped by the mucous membrane of the bile duct, and the knots outside the bile duct of some patients even can move into the lumen. The exposed pilin lines and knots in the lumen can influence the flow of bile, and cellulose, bile salts, proteins and other substances in the bile can be attached to the pilin lines to form bile mud and calculus. Clogging of the bile duct with knots and stones can lead to dilation of the intrahepatic bile duct, cholestasis and formation of intrahepatic bile duct stones.

Clinicians often pay more attention to removing calculus in bile ducts and relieving bile duct stenosis, but neglect bare sutures and knots on the wall of the bile duct, which leads to quick recurrence of calculus. Therefore, in order to reduce the recurrence probability of bile duct stones, free sutures and knots in the lumen of the bile duct must be removed at the same time. The processing scheme of the suture and the knot which are discovered unexpectedly in the biliary tract exploration mainly comprises the following steps: 1. in the open abdomen operation, the wall of the bile duct is cut open, the knot is cut off by scissors directly, and then the hemostatic forceps are used for removing the knot; 2. laparoscopic surgery, like open surgery, uses laparoscopic scissors and separation forceps to cut and pull off the ligature in the lumen, but due to the limitation of the visual field, the wall incision of the bile duct is large, and the ligature is difficult to handle; 3. after a choledochoscope operation, a surgical operation or a laparoscopic operation, a T tube is kept in place conventionally, a choledochoscope can enter a choledochosis through a T tube fistula tract after 6 weeks of operation, the whole bile duct cavity is explored gradually, and choledochoscopy is a main method for finding a knot in a bile duct cavity. Due to the lack of instruments under the choledochoscope, the foreign body forceps can drag the thread knots on the superficial layer under the mucous membrane away, most of the thread knots can not be processed, and the laparoscope or the laparotomy common bile duct exploration operation can be carried out again only to remove the thread knots in the bile duct cavity.

In order to overcome the defects in the prior art and overcome the defects of the knot treatment by combining different operation schemes, as shown in fig. 6-10, the utility model provides a pair of choledochoscope scissors. Is a minimally invasive surgical instrument used for cutting short-stitch coils.

The choledochoscope double-leg scissors comprise an outer sleeve, a connecting rod, a tool bit and a handle, wherein the outer sleeve is a single-channel tube and comprises a first tube section and a second tube section, two opposite longitudinal openings are arranged on the tube wall of the head end of the first tube section, transverse shafts are arranged in the first tube section, and the second tube section is formed by spirally stacking steel wires and can be bent; the cutter head comprises a blade I, a blade II and a base, the blade I and the blade II are symmetrical and are L-shaped, a round hole is formed in the bottom of each blade, a strip groove is formed in the outer side of the lower portion of each blade, a pipe wall cross shaft passes through the strip groove, and the strip groove and the cross shaft slide relatively. The head of the base is square, the side wall of the base is provided with a T-shaped rod, the T-shaped rod is rotatably connected with the round holes of the two blades, and the blades are fixed on the cutter holder through the round holes at the bottom of the blades. The utility model can be put in through the choledochoscope channel for cutting off the seam coil.

After the thread in the bile duct cavity is found under the choledochoscope, the scissors are placed in the choledochoscope clamping passage, when the head end of the scissors enters the visual field, the connecting rod is pushed to enable the cutter head to move out of the outer sheath tube to be gradually in an open state, the direction and the depth of the choledochoscope are adjusted, the cutter head end blade of the hook cutter is used for biting the thread knot, the handle is tightened, the two cutter head ends of the cutter head are closed, and the cutter head of the handle is further tightened to enter the outer sheath tube to cut off the thread.

The utility model discloses a two pieces of blade bilateral symmetry in the tool bit all are L shape, open the back and appear like crab pincers, and the suture gets into in the tool bit tiger mouth easily, can prevent after the interlock that the suture from droing.

The utility model discloses a two pieces of blades pass through the pole and the axle is fixed on tool bit base and epitheca pipe wall in the tool bit, during the push-and-pull connecting rod, through the opening and shutting of blade at the epaxial slip control blade of blade.

Example 3

Clinicians often pay more attention to removing calculus in bile ducts and relieving bile duct stenosis, but neglect bare sutures and knots on the wall of the bile duct, which leads to quick recurrence of calculus. Therefore, in order to reduce the recurrence probability of bile duct stones, free sutures and knots in the lumen of the bile duct must be removed at the same time. The processing scheme of the suture and the knot which are discovered unexpectedly in the biliary tract exploration mainly comprises the following steps: 1. in the open abdomen operation, the wall of the bile duct is cut open, the knot is cut off by scissors directly, and then the hemostatic forceps are used for removing the knot; 2. laparoscopic surgery, like open surgery, uses laparoscopic scissors and separation forceps to cut and pull off the knot in the lumen, but due to the limited field of vision, the incision of the bile duct wall is large, and the knot is difficult to handle; 3. after a choledochoscope operation, a surgical operation or a laparoscopic operation, a T tube is kept in place conventionally, a choledochoscope can enter a choledochosis through a T tube fistula tract after 6 weeks of operation, the whole bile duct cavity is explored gradually, and choledochoscopy is a main method for finding a knot in a bile duct cavity. Due to the lack of instruments under the choledochoscope, the foreign body forceps can drag the thread knots on the superficial layer under the mucous membrane away, most of the thread knots can not be processed, and the laparoscope or the laparotomy common bile duct exploration operation can be carried out again only to remove the thread knots in the bile duct cavity.

In order to overcome the defects in the prior art and combine different surgical schemes to treat the defects of the knot, as shown in fig. 11-14, the utility model provides a choledochoscope bipod scissors, which is a minimally invasive surgical instrument and is used for cutting short-seam coils.

The choledochoscope scissors comprise an outer sleeve, a connecting rod, a cutter head and a handle, wherein the outer sleeve is a single-channel tube and comprises a first tube section and a second tube section, and the second tube section is formed by spirally stacking steel wires and can be bent; the cutter head comprises a blade I, a blade II, an elastic sheet I, an elastic sheet II, a push rod and a base, wherein the blade I and the blade II are symmetrical and are L-shaped, the outer side of the blade protrudes out, a round hole is formed in the bottom of the blade, and the blade is axially vertical to the elastic sheet. The head of the base is square, the side wall of the base is provided with a T-shaped rod, the T-shaped rod is rotatably connected with the round holes of the two blades, the two blades are fixed on the tool apron through the round holes at the bottom of the blades, and the lower part of the base is connected with a push rod shaped like a reversed T. Two ends of the two elastic sheets are respectively connected with the two blades and the connecting rod, wherein the upper end of the left elastic sheet is connected with the tail of the right blade, the upper end of the right elastic sheet is connected with the tail of the left blade, and the lower ends of the two elastic sheets are fixedly connected with the head end of the connecting rod. The utility model can be put in through the choledochoscope forceps channel for cutting off the seam coil.

The utility model discloses a special apparatus under choledochoscope, can put into and cut off the knot through choledochoscope forceps channel, or press close to the bile duct mucous membrane from knot root and cut off the suture.

The outer sides of the two blades in the cutter head of the utility model protrude to prevent the scissors from completely entering the sheath tube after being tightened.

The utility model discloses a two pieces of blade bilateral symmetry in the tool bit are L shape, and when the tool bit was located outer sheath pipe, through the elasticity of shell fragment, automatic opening.

The utility model discloses well pull-back connecting rod, shell fragment are elongated, and the tool bit gets into the sheath pipe thereupon, and under the reverse force effect of sheath pipe, the blade is progressively closed and incises the suture.

The utility model discloses a set up the push rod in the tool bit, promote the connecting rod forward, the laminating of connecting rod and push rod can be with the tool bit push into the sheath outside of tubes.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications or substitutions do not depart from the scope of the invention in its corresponding aspects.

Claims

1. A choledochoscope scissors, comprising: the multifunctional electric screwdriver comprises an outer sleeve (1), a connecting rod (2), a screwdriver head (3) and a handle (4), wherein the outer sleeve (1) comprises a first pipe section and a second pipe section which are connected, the first pipe section is positioned at the front part, the second pipe section is positioned at the tail part and has a bending function, and the handle (4) is connected with the tail end of the second pipe section; the connecting rod (2) is positioned in the outer sleeve (1), the head end of the connecting rod is connected with the cutter head (3), and the tail end of the connecting rod is connected with the handle (4); the cutter head (3) is positioned at the head of the first pipe section, has three structures and is provided with a shearing part, the shearing part comprises two blades, the two blades are connected with the head of the connecting rod (2), and the two blades are opened and closed by pushing and pulling the connecting rod (2); the two blades are a blade I (5) and a blade II (6) with cutting edges on the inner sides.

2. Choledochoscope scissors according to claim 1, wherein the blade is of a first configuration, connected to the connecting rod (2) and the first tube section;

the pipe wall of the head end of the first pipe section is provided with a longitudinal opening, and a transverse shaft is arranged in the longitudinal opening; the blade II (6) is rotatably connected to the pipe wall of the first pipe section at the longitudinal opening through a transverse shaft, and in the opening and closing process, the blade II (6) rotates in the longitudinal opening;

tool bit (3) still include the base, and pedestal mounting is at the head end of connecting rod (2), and the afterbody of blade I (5) is fixed on the base, and connecting hole I and connecting hole II have been seted up respectively to the somatic part and the afterbody of blade II (6), and the cross axle through connection hole I of first pipeline section, base head end one side is equipped with T font abrupt axle, abrupt axle through connection hole II and with the afterbody rotation connection of blade II (6).

3. The choledochoscope scissors according to claim 2, wherein the blade I (5) is L-shaped, the blade II (6) is 7-shaped, the two blades are like a crab forceps after being opened, a suture can easily enter a tiger mouth of the cutter head (3), and the suture can be prevented from falling off after occlusion.

4. Cholangioscope scissors according to claim 1, characterised in that the blade may also be of a second configuration, connected to the connecting rod (2) and to the first tube section;

two longitudinal openings are symmetrically arranged on two sides of the pipe wall at the head end of the first pipe section, transverse shafts are arranged in the longitudinal openings, and the blades I (5) and the blades II (6) are symmetrically arranged and are respectively connected to the pipe wall of the first pipe section at the longitudinal openings on the two sides through the transverse shafts; a long groove is formed in the side part below each blade, and the transverse shaft is connected in the long groove in a sliding manner; in the opening and closing process, the blade I (5) and the blade II (6) rotate in the longitudinal openings at the two sides;

the cutter head (3) further comprises a base, the head of the base is square and is mounted at the head end of the connecting rod (2), the side wall of the base is provided with a T-shaped rod, the tail of each blade is provided with a round hole, the T-shaped rod is rotatably connected with the round holes of the two blades, and the two blades are connected to the base through the round holes.

5. The choledochoscope scissors of claim 4, wherein the first blade (5) and the second blade (6) are both L-shaped.

6. Cholangioscope scissors according to claim 1, characterised in that the blade may also be of a third configuration, connected to a connecting rod (2);

the tool bit (3) further comprises an elastic piece I, an elastic piece II, a push rod and a base, the two blades are axially vertical to the elastic piece, and the blade I (5) and the blade II (6) are symmetrically arranged; the head of the base is square, the side wall of the base is provided with a T-shaped rod, the tail of each blade is provided with a round hole, the T-shaped rod is rotatably connected with the round holes of the two blades, and the two blades are connected to the base through the round holes; the lower part of the base is connected with the upper end of an inverted T-shaped push rod;

the tail ends of the elastic piece I and the elastic piece II are fixedly connected with the connecting rod (2), the head ends of the elastic piece I and the elastic piece II are respectively connected with the tail parts of the blade I (5) and the blade II (6), the elastic piece I and the blade II (6) are arranged on the same side, and the elastic piece II and the blade I (5) are arranged on the same side;

the connecting rod (2) is pushed forwards, the connecting rod (2) is attached to the push rod, and the cutter head (3) is pushed out of the outer sleeve (1) through the elasticity of the elastic sheet; the connecting rod (2) is pulled back, the elastic sheet is elongated, the cutter head (3) enters the outer sleeve (1) along with the elastic sheet, and under the reverse force action of the outer sheath, the blade is gradually closed and cuts off the suture.

7. The choledochoscope scissors of claim 6, wherein the first blade (5) and the second blade (6) are both L-shaped.

8. The choledochoscope scissors according to claim 2 or 4, wherein the outer sides of the blade I (5) and the blade II (6) are both arc-shaped, so that no damage is caused to the choledochoscope forceps channel and the bile duct mucous membrane.

9. The choledochoscope scissors according to claim 6, wherein the blades I (5) and II (6) protrude outwards to prevent the scissors from fully entering the outer sheath after being tightened.

10. Cholangioscope scissors according to claim 1, characterized in that the outer sleeve (1) is a single-channel tube, the second section being helically stacked from steel wires.