CN213883315U - Novel tumor extraction forceps - Google Patents

Abstract

The utility model relates to the technical field of medical appliances, in particular to a novel tumor extraction forceps; the utility model comprises a first sheath, a second sheath and a third sheath; the second sheath tube is sleeved in the first sheath tube, first hinged supports are symmetrically arranged on the outer side wall of the bottom of the second sheath tube, first connecting rods are rotatably connected to the first hinged supports, the tail ends of the first connecting rods are respectively fixed with a shell, and second hinged supports are arranged on the inner wall of the shell; the third sheath tube is sleeved in the second sheath tube, the bottom of the third sheath tube is provided with a clamping body, the clamping body is provided with a clamping pincers, the clamping pincers are provided with a third hinged support, and two ends of a second connecting rod are respectively and rotatably connected to the second hinged support and the third hinged support; the bottom of the pull rod is fixed at the top of the clamping pincers; the problem that in the prior art, when a doctor performs minimally invasive surgery on a patient, an extra surgical cutting instrument with a sheath tube for cutting a tumor into fragments needs to be inserted, so that the influence of the surgery on the body of the patient is increased, and the difficulty of cleaning the tumor fragments by the doctor is high is solved.

Description

Novel tumor extraction forceps

Technical Field

The utility model relates to the technical field of medical equipment, concretely relates to novel tumour draws pincers.

Background

When a doctor carries out a tumor resection operation, the doctor needs to fix the tumor by using a clamp firstly and then cut off the tumor by using a scalpel, so that the tumor can be cut off reasonably; with the continuous progress of the technology related to minimally invasive surgery in medicine, doctors can choose minimally invasive surgery as far as possible to reduce the influence of the surgery on patients under the condition that the conditions allow, in the existing internal tumor resection surgery, doctors generally choose to insert a plurality of sheath tubes on the bodies of patients and then stretch special surgical instruments into the bodies of the patients through the sheath tubes to perform the surgery as long as the volume of tumors does not meet the requirement of the open surgery needing a larger area.

However, the existing tumor extraction forceps with the sheath tube have the following defects in practical application: first, the existing tumor extracting forceps can only clamp tumor fragments which are already cut by other cutting surgical instruments, which means that a sheath needs to be inserted into the body of a patient, thereby increasing the influence of the operation on the body of the patient; secondly, when the existing tumor extraction forceps are used for clamping tumor fragments and taking out the tumor fragments, the tumor fragments may not be rubbed with the bottom edge of a sheath tube or other body tissues or cannot be grasped well by hand strength of a doctor, so that a small amount of tumor fragments fall off, and the difficulty of cleaning the tumor fragments by the doctor is increased.

SUMMERY OF THE UTILITY MODEL

Solves the technical problem

Above-mentioned shortcoming to prior art exists, the utility model provides a novel tumour draws pincers, the well doctor that can solve prior art effectively need additionally insert one when carrying out minimal access surgery to patient and be used for cutting into the kibbling operation cutting instrument that takes the sheath pipe with the tumour, thereby increase the problem that the operation influences patient's health, simultaneously can also solve the tumour among the prior art effectively and draw pincers when pressing from both sides and get tumour fragment and outwards take out, tumour fragment can probably hold with the friction of sheath bottom of tubes edge or other health tissue or doctor's hand dynamics and do not well cause a small amount of tumour fragment to drop, thereby increase the problem that the doctor cleared up the tumour fragment degree of difficulty.

Technical scheme

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes:

a novel tumor extraction forceps comprises a first sheath, a second sheath and a third sheath; the second sheath tube is sleeved in the first sheath tube, a pair of first hinged supports are symmetrically arranged on the outer side wall of the bottom of the second sheath tube, a first connecting rod is rotatably connected onto the first hinged supports, the tail end of the first connecting rod is fixedly connected with a shell, a second hinged support is arranged on the middle part of the inner wall of the shell, close to the far end of the second sheath tube, and a limiting ring body is arranged at the top of the second sheath tube; the third sheath tube is sleeved in the second sheath tube, the bottom of the third sheath tube is provided with a clamping body, the clamping body is provided with clamping pincers, the back surfaces of the clamping pincers are provided with third hinged supports close to the near end of the bottom of the third sheath tube, the third hinged supports are rotatably connected with second connecting rods, and the other ends of the second connecting rods are rotatably connected to the second hinged supports; a pull rod is further sleeved in the third sheath, the bottom of the pull rod is fixed to the top of the clamping pliers, and a handle is further arranged at the top of the pull rod.

Furthermore, the difference between the second sheath length value and the first sheath length value is 1 to 1.5 times of the sum of the first link length value and the longitudinal length value of the shell.

Furthermore, a group of guide ring bodies are uniformly arranged on the outer side wall of the second sheath pipe, and the radius of the outer ring of each guide ring body is 0.8-0.99 times that of the inner ring of the first sheath pipe; the outer ring radius of the limiting ring body is 1-2 times of the outer ring radius of the first sheath pipe, a pair of stopping pieces are symmetrically arranged at the top of the limiting ring body, the stopping pieces are half sides in a convex shape, and the stopping pieces are in a symmetrical relation of mirror image overturning.

Furthermore, a knob matched with the retaining piece is rotatably connected to the outer wall of the third sheath pipe close to the top of the third sheath pipe; when the knob is clamped on the retaining piece, the two shells at the bottom of the second sheath tube are just in a completely closed state, and the size of a sphere formed when the shells are completely closed is smaller than the radius of the inner ring of the first sheath tube.

Furthermore, the shape of the shell is hemispherical, the edges of the shell, which are contacted with each other, are provided with cutting edges, the cutting edges are divided into an inner cutting edge and an outer cutting edge according to the difference of the positions of the cutting edges, the inner cutting edge is arranged on any one shell, and the outer cutting edge is arranged on the other shell.

Furthermore, the clamping pincers are uniformly provided with a row of anti-slip teeth on the surface acting on the object to be clamped, and the meshing direction of the anti-slip teeth is towards the top of the second sheath pipe.

Furthermore, the tops of the two parts of the clamping pincers are rotatably connected through a forceps holder connecting pin, two ends of the forceps holder connecting pin are respectively and fixedly connected to the inner walls of two ends of the clamping body, the tops of the two parts of the clamping pincers are also rotatably connected with a connecting plate through a connecting plate pin, and the connecting plate is rotatably connected with the bottom of the pull rod through a pull rod connecting pin.

Furthermore, the first sheath tube, the second sheath tube, the third sheath tube, the clamping pincers and the pull rod are all made of any one of stainless steel, titanium alloy or aluminum alloy materials.

Advantageous effects

Adopt the utility model provides a technical scheme compares with known public technique, has following beneficial effect:

1. the utility model discloses an increase first sheath intraductal cup joints second sheath pipe, the bottom lateral wall of second sheath pipe is symmetrical to be equipped with a pair of first free bearing, rotate on the first free bearing and be connected with first connecting rod, first connecting rod end all fixedly connected with casing, the casing is close to and is equipped with the second free bearing on the inner wall middle part of second sheath pipe distal end, the third sheath pipe cup joints in the second sheath pipe, the bottom of third sheath pipe is equipped with the cramping body, be equipped with the clamp pincers on the cramping body, the back of clamp pincers is close to third sheath pipe bottom near-end and all is equipped with the third free bearing, rotate on the third free bearing and be connected with the second connecting rod, the other end of second connecting rod rotates and is connected on the second free bearing; a pull rod is further sleeved in the third sheath tube, the bottom of the pull rod is fixed to the top of the clamping pliers, a handle is further arranged at the top of the pull rod, a pair of backstop members are symmetrically arranged at the top of the limiting ring body, the backstop members are half sides in a convex shape, the two backstop members are in a mirror image turnover symmetrical relation, a knob matched with the backstop members is rotatably connected to the outer wall of the third sheath tube close to the top of the third sheath tube, when the knob is clamped on the backstop members, the two shells at the bottom of the second sheath tube are just in a completely closed state, the shells are hemispherical in shape, the edges of the shells, which are in contact with each other, are provided with cutting edges, and are divided into an inner cutting edge and an outer cutting edge according to the positions of the cutting edges, the inner cutting edge is arranged on any one shell, the outer cutting edge is arranged on the other shell, and the clamping pliers are used for uniformly arranging a row of anti-skid teeth on the surface of an object to be clamped; the doctor can firstly loosen the knob on the second sheath tube from the retaining piece, then push the third sheath tube to move forwards, so that the clamping pincers extend forwards while the shell is unfolded by the second connecting rod, then push the pull rod to open the clamping pincers, then pull the pull rod backwards after clamping the tumor by the clamping pincers to close the clamping pincers, then withdraw the third sheath tube to close the shell and cut the tumor pulled into the shell by the clamping pincers, and then draw the second sheath tube outwards to take out the tumor fragments wrapped by the shell; compared with the means that a doctor needs to insert one more sheath into a patient by separating an extraction instrument from a cutting instrument in the prior art; the number of the sheath tubes which need to be inserted into the body of the patient during the operation is effectively reduced, so that the influence of the operation on the body of the patient is effectively reduced.

2. The utility model discloses an increase first sheath intraductal cup joints second sheath pipe, the bottom lateral wall of second sheath pipe is symmetrical to be equipped with a pair of first free bearing, rotate on the first free bearing and be connected with first connecting rod, first connecting rod end all fixedly connected with casing, the casing is close to and is equipped with the second free bearing on the inner wall middle part of second sheath pipe distal end, the third sheath pipe cup joints in the second sheath pipe, the bottom of third sheath pipe is equipped with the cramping body, be equipped with the clamp pincers on the cramping body, the back of clamp pincers is close to third sheath pipe bottom near-end and all is equipped with the third free bearing, rotate on the third free bearing and be connected with the second connecting rod, the other end of second connecting rod rotates and is connected on the second free bearing; a pull rod is further sleeved in the third sheath tube, the bottom of the pull rod is fixed to the top of the clamping pliers, a handle is further arranged at the top of the pull rod, a pair of backstop members are symmetrically arranged at the top of the limiting ring body, the backstop members are half sides in a convex shape, the two backstop members are in a mirror image turnover symmetrical relation, a knob matched with the backstop members is rotatably connected to the outer wall of the third sheath tube close to the top of the third sheath tube, when the knob is clamped on the backstop members, the two shells at the bottom of the second sheath tube are just in a completely closed state, the shells are hemispherical in shape, the edges of the shells, which are in contact with each other, are provided with cutting edges, and are divided into an inner cutting edge and an outer cutting edge according to the positions of the cutting edges, the inner cutting edge is arranged on any one shell, the outer cutting edge is arranged on the other shell, and the clamping pliers are used for uniformly arranging a row of anti-skid teeth on the surface of an object to be clamped; thus, the tumor fragments clamped after being cut can be wrapped by the shell; compared with the clamping mode that the tumor extraction forceps are directly exposed in the prior art; the effect of effectively ensuring that the clamped tumor fragments cannot be broken due to other factors is achieved, and therefore the difficulty of a doctor in cleaning the tumor fragments is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

FIG. 1 is a visual diagram of the present invention in a fully closed state;

fig. 2 is a visual diagram of the present invention showing the third sheath tube extending to fully open the housing;

FIG. 3 is a visual diagram showing the case and the grasping forceps of the present invention both open;

FIG. 4 is an exploded pictorial view of the body member of the present invention;

FIG. 5 is a visual diagram of zone A of the present invention;

FIG. 6 is a visual diagram of the area B of the present invention;

fig. 7 is a visual diagram of the area C of the present invention;

FIG. 8 is a schematic view of zone D of the present invention;

fig. 9 is a schematic plan view of the gripping pliers in area E of the present invention;

fig. 10 is a sectional view showing a connection relationship between the knob and the third sheath according to the present invention;

the reference numerals in the drawings denote: 1-a first sheath; 2-a second sheath; 3-a third sheath; 4-a first hinge base; 5-a first link; 6-a shell; 7-a second free bearing; 8-a limiting ring body; 9-a clamping body; 10-gripping tongs; 11-a third free bearing; 12-a second link; 13-a pull rod; 14-a grip; 15-a guide ring body; 16-a backstop; 17-a knob; 18-a blade edge; 19-an inner edge; 20-an outer edge; 21-anti-slip teeth; 22-jaw connecting pin; 23-a link pin; 24-connecting plates; 25-tie rod connecting pin.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The present invention will be further described with reference to the following examples.

Examples

The novel tumor extraction forceps of the embodiment are shown in fig. 1 to 10: including first sheath pipe 1, second sheath pipe 2 and third sheath pipe 3, wherein first sheath pipe 1 is the smooth stereoplasm straight tube in surface, can guarantee effectively like this that first sheath pipe 1 is when inserting patient's health, and first sheath pipe 1 can guide accurately to press from both sides and get pincers 10 and casing 6 to the assigned position, and minimize the influence to patient's health.

The second sheath tube 2 is sleeved in the first sheath tube 1, a pair of first hinged supports 4 are symmetrically arranged on the outer side wall of the bottom of the second sheath tube 2, a first connecting rod 5 is rotatably connected to the first hinged supports 4, the tail ends of the first connecting rod 5 are fixedly connected with a shell 6, a second hinged support 7 is arranged on the middle part of the inner wall of the shell 6 close to the far end of the second sheath tube 2, and a limiting ring body 8 is arranged at the top of the second sheath tube 2; the third sheath tube 3 is sleeved in the second sheath tube 2, the bottom of the third sheath tube 3 is provided with a clamping body 9, the clamping body 9 is provided with a clamping pliers 10, the back of the clamping pliers 10 is provided with a third hinge base 11 close to the near end of the bottom of the third sheath tube 3, the third hinge base 11 is rotatably connected with a second connecting rod 12, and the other end of the second connecting rod 12 is rotatably connected to a second hinge base 7; a pull rod 13 is further sleeved in the third sheath tube 3, the bottom of the pull rod 13 is fixed at the top of the clamping forceps 10, a grip 14 is further arranged at the top of the pull rod 13, and the grip 14 is used for facilitating a doctor to control the drawing motion of the pull rod 13.

The difference between the length value of the second sheath tube 2 and the length value of the first sheath tube 1 is 1.2 times of the sum of the length value of the first connecting rod 5 and the longitudinal length value of the shell 6, so that the rotating process of the first connecting rod 5 is not influenced by the bottom edge of the first sheath tube 1 when the shell 6 is expanded by the second connecting rod 12.

Five guide ring bodies 15 are uniformly arranged on the outer side wall of the second sheath pipe 2, the outer ring radius of each guide ring body 15 is 0.99 times of the inner ring radius of the first sheath pipe 1, and the guide ring bodies 15 are used for reducing the transverse shaking generated when the second sheath pipe 2 moves up and down in the first sheath pipe 1; the outer ring radius of the limiting ring body 8 is 1.5 times of the outer ring radius of the first sheath pipe 1, so that the top of the second sheath pipe 2 can be effectively prevented from falling into the first sheath pipe 1, and unnecessary injury to a patient is avoided.

A pair of backstop members 16 are symmetrically arranged at the top of the limiting ring body 8, the shape of the backstop members 16 is half of a convex shape, the two backstop members 16 are in a mirror image turning symmetrical relation, and a knob 17 matched with the backstop members 16 is rotatably connected to the outer wall of the third sheath tube 3 close to the top of the third sheath tube; when the knob 17 is clamped on the retaining piece 16, the two shells 6 at the bottom of the second sheath tube 2 are just in a completely closed state, and the size of a sphere formed when the shells 6 are completely closed is smaller than the radius of the inner ring of the first sheath tube 1; can make things convenient for the doctor to decide whether third sheath 3 advances and retreats through rotatory knob 17 like this to guarantee that the doctor with knob 17 joint on stopping 16 and when outwards taking out second sheath 2, casing 6 can keep closed state always, the target tumour fragment that finally realizes being taken out can not cause a small amount of tumour fragments to drop because of the friction or doctor's hand dynamics with sheath bottom edge or other body tissue hold not well.

The shape of the shell 6 is hemispherical, because the volume of the sphere is maximum under the condition of the same surface area, and therefore the spherical shell 6 can contain tumor fragments with larger volume; the edges of the shells 6 which are contacted with each other are provided with cutting edges 18, wherein the cutting edges 18 are made on the edges of the shells 6 by adopting a mechanical grinding process, the shells are divided into an inner cutting edge 19 and an outer cutting edge 20 according to the difference of the positions formed by the cutting edges 18, the inner cutting edge 19 is arranged on any one shell 6, and the outer cutting edge 20 is arranged on the other shell 6, so that the two shells 6 can be completely closed, and the effect of cutting tumors clamped by the clamping pliers 10 can be achieved.

The clamping pliers 10 is uniformly provided with a row of anti-slip teeth 21 on the surface acting on the clamped object, wherein the anti-slip teeth 21 are made by adopting a mechanical cutting process, so that the clamping pliers 10 can be well ensured to have good integrity; the biting direction of the anti-slip teeth 21 is toward the top of the second sheath 2 because the surface of the tumor is smooth, and the anti-slip teeth 21 ensure that the clamping forceps 10 can reliably clamp the tumor without falling off.

The tops of the two parts of the clamping forceps 10 are rotatably connected through the forceps connecting pin 22, the two ends of the forceps connecting pin 22 are respectively and fixedly connected to the inner walls of the two ends of the clamping body 9, the tops of the two parts of the clamping forceps 10 are also rotatably connected with the connecting plate 24 through the connecting plate pin 23, the bottoms of the connecting plate 24 and the pull rod 13 are rotatably connected through the pull rod connecting pin 25, so that a doctor can move inside the third sheath tube 3 through pushing and pulling the pull rod 13, and the connecting plate 24 is adjusted to act on the clamping forceps 10 and enable the clamping forceps 10 to open and close.

Through the matching relation between the clamping forceps 10 and the shell 6, the operation that the doctor can cut and clamp the tumor can be realized only by one sheath when the doctor performs the minimally invasive surgery on the patient, so that the problem that the doctor needs to additionally insert an operation cutting instrument with the sheath for cutting the tumor into fragments when performing the minimally invasive surgery on the patient in the prior art is effectively solved, and the influence of the surgery on the body of the patient is increased.

The first sheath tube 1, the second sheath tube 2, the third sheath tube 3, the clamping forceps 10 and the pull rod 13 are all made of titanium alloy materials, and the titanium alloy materials have the advantages of good structural strength, high temperature resistance, corrosion resistance and small heat conduction elasticity, and are excellent raw materials for manufacturing medical equipment.

When in use, a doctor firstly loosens the knob 17 on the second sheath tube 2 from the retaining piece 16; then pushing the third sheath 3 to move forward, so that the clamping pincers 10 extend forward while the shell 6 is expanded by the second connecting rod 12; then the pull rod 13 is pushed to open the clamping pincers 10; then the clamping forceps 10 are used for clamping the tumor, and the pull rod 13 is pulled backwards to enable the clamping forceps 10 to be closed; then the third sheath 3 is withdrawn so that the housing 6 is closed and the tumour drawn into the housing 6 by the grasping forceps 10 is cut into pieces by the blade 18 on the housing 6; then the second sheath 2 is drawn outward so that the tumor fragments wrapped by the housing 6 are taken out (note: here, when the second sheath 2 is drawn out, the third sheath 3 and the pull rod 13 are partially taken out from the first sheath 1 together with the second sheath 2); then taking out the tumor in the shell 6 at the bottom of the second sheath tube 2 and placing the tumor in a surgical tray; the second sheath 2 is then reinserted into the first sheath 1 (note that when the second sheath 2 is inserted back here, the third sheath 3 and the pull rod 13 are partially inserted back into the first sheath 1 along with the second sheath 2) and the above steps are repeated until the tumor is completely resected and removed.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; 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 technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims (8)

1. A novel tumor extraction forceps is characterized in that: comprises a first sheath tube, a second sheath tube and a third sheath tube; the second sheath tube is sleeved in the first sheath tube, a pair of first hinged supports are symmetrically arranged on the outer side wall of the bottom of the second sheath tube, a first connecting rod is rotatably connected onto the first hinged supports, the tail end of the first connecting rod is fixedly connected with a shell, a second hinged support is arranged on the middle part of the inner wall of the shell, close to the far end of the second sheath tube, and a limiting ring body is arranged at the top of the second sheath tube; the third sheath tube is sleeved in the second sheath tube, the bottom of the third sheath tube is provided with a clamping body, the clamping body is provided with clamping pincers, the back surfaces of the clamping pincers are provided with third hinged supports close to the near end of the bottom of the third sheath tube, the third hinged supports are rotatably connected with second connecting rods, and the other ends of the second connecting rods are rotatably connected to the second hinged supports; a pull rod is further sleeved in the third sheath, the bottom of the pull rod is fixed to the top of the clamping pliers, and a handle is further arranged at the top of the pull rod.

2. The novel tumor extraction forceps as claimed in claim 1, wherein the difference between the second sheath length value and the first sheath length value is 1-1.5 times the sum of the first rod length value and the longitudinal length value of the housing.

3. The novel tumor extraction forceps as claimed in claim 1, wherein a set of guiding ring bodies are uniformly arranged on the outer side wall of the second sheath, and the outer ring radius of the guiding ring bodies is 0.8-0.99 times of the inner ring radius of the first sheath; the outer ring radius of the limiting ring body is 1-2 times of the outer ring radius of the first sheath pipe, a pair of stopping pieces are symmetrically arranged at the top of the limiting ring body, the stopping pieces are half sides in a convex shape, and the stopping pieces are in a symmetrical relation of mirror image overturning.

4. The novel tumor extraction forceps as claimed in claim 1 or 3, wherein a knob matched with the retaining member is rotatably connected to the outer wall of the third sheath tube near the top thereof; when the knob is clamped on the retaining piece, the two shells at the bottom of the second sheath tube are just in a completely closed state, and the size of a sphere formed when the shells are completely closed is smaller than the radius of the inner ring of the first sheath tube.

5. The novel tumor extracting forceps as claimed in claim 1, wherein the casing is shaped like a hemisphere, the edges of the casing contacting each other are provided with blades, the inner blades and the outer blades are arranged according to the positions of the blades, the inner blades are arranged on any one casing, and the outer blades are arranged on the other casing.

6. The novel tumor extraction forceps as claimed in claim 1, wherein the gripping forceps has a row of anti-slip teeth uniformly formed on the surface thereof acting on the object to be grasped, and the engagement direction of the anti-slip teeth is toward the top of the second sheath.

7. The novel tumor extraction forceps as claimed in claim 1, wherein the top portions of the two parts of the forceps are rotatably connected through a forceps holder connecting pin, the two ends of the forceps holder connecting pin are respectively and fixedly connected to the inner walls of the two ends of the clamping body, the top portions of the two parts of the forceps are also rotatably connected with a connecting plate through a connecting plate pin, and the connecting plate is rotatably connected with the bottom portion of the pull rod through a pull rod connecting pin.

8. The novel tumor extraction forceps as claimed in claim 1, wherein the first sheath, the second sheath, the third sheath, the clamping forceps and the pull rod are made of any one of stainless steel, titanium alloy or aluminum alloy.

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