CN109620307B

CN109620307B - Tumor surgery is with excision instrument with anti-disengaging structure

Info

Publication number: CN109620307B
Application number: CN201910032508.2A
Authority: CN
Inventors: 常宇; 程田; 付晓瑞
Original assignee: First Affiliated Hospital of Zhengzhou University
Current assignee: First Affiliated Hospital of Zhengzhou University
Priority date: 2019-01-14
Filing date: 2019-01-14
Publication date: 2021-06-04
Anticipated expiration: 2039-01-14
Also published as: CN109620307A

Abstract

The invention discloses a tumor surgical excision tool with an anti-falling structure, which comprises a sealing plug, an embedded needle and a connector; an outer connecting pipe is installed at one end of the plane of the connector, a pressure pipe is installed at the other end of the plane of the connector, a sealing plug is installed in the middle of the side face of a cylinder of the connector, an embedded needle is installed in the position, overlapped with the center line, of the inside of the sealing plug, a biopsy needle body is installed on the other side of the side face of the cylinder of the connector and the center line of the sealing plug, the biopsy needle body is fixedly installed on the connector, and an outer handle is installed on the side face; the air pumped out by the invention is sucked from the top end of the biopsy needle body, is stored in the pressure pipe through the connector, and is discharged to the outside of the extirpation tool through the outer connecting pipe by the biopsy needle body sealed by the sealing plug, thereby achieving the aim of continuously pressurizing and sucking out the tumor tissue and hanging the tumor tissue upside down on the embedded needle, and achieving the double anti-falling function under the combined action of the air pressure and the hook.

Description

Tumor surgery is with excision instrument with anti-disengaging structure

Technical Field

The invention relates to the technical field of medical tumor tissue extirpation, in particular to an extirpation tool with an anti-falling structure for tumor surgery.

Background

The tumor is taken as a common malignant disease, auxiliary tools are needed to collect and remove in the early diagnosis and treatment, the initial removal mode is completed through a large-scale operation, along with the improvement of medical conditions and science, the operation mode which has large harm to human bodies is gradually replaced by a minimally invasive operation, when the tumor is removed or tissues are taken out, the tumor tissue at the part is accurately aligned through a thin needle tube, and the tumor tissue at the part is extracted or removed, so that the purpose of removing the tumor is achieved.

At present, for the prior examination of tumor, a biopsy mode of a needle biopsy needle is adopted, the found tumor in a small area, especially a benign tumor, is taken out in a puncture mode, and the injury of the operation to the human body is avoided, the prior art with patent numbers CN2402275Y, CN102551692A and CN204072260U all utilize a blocking mode to prevent the falling off, the blocking mode has no guarantee, the falling off is easy to fall off under the condition of losing pressure, especially on the extraction of larger tumor tissue, because the gravity of the needle tube is larger, the wall of the needle tube is smoother, the extracted tissue falls off in the process of taking out, the falling off does not cause the injury to the human body, but because any point of the tumor tissue is left in the human body, the human body at the position has the same tumor lesion risk, and in the process of using a pressure tube, partial pressure or all pressure is instantly lost due to improper operation or the quality problem of the tool, thereby losing the adsorption force on the extirpated tissue and causing the extirpated tissue to have the risk of slipping. Therefore, how to improve the tumor removal tool, on the basis of keeping the original working principle, a structure and a mode for preventing the tumor from sliding off are added, so that the tumor tissue is protected from falling off through the gas pressure and the internal structure of the tool after the tissue enters the needle tube for tumor removal, and the protection of the gas pressure is enhanced to prevent the tumor tissue from suddenly losing pressure and have a layer of anti-falling protection when the pressure is lost is the problem to be solved by the invention.

Disclosure of Invention

In order to overcome the above technical problems, an object of the present invention is to provide an ablation instrument for tumor surgery having an anti-detachment structure, wherein the ablation instrument has the following improvement:

1. a double anti-drop mode of an embedded barb for increasing elasticity;

2. the double anti-drop mode of the pressure pipe and the sealing plug is adopted;

3. the mode of installing the embedded barb by the connecting mechanism of the embedded needle is increased;

the structure and the mode for preventing the tumor from sliding off are added on the basis of keeping the original working principle, so that the tumor tissue is dually protected from falling off by the gas pressure and the internal structure of the tool after the tissue is extirpated and enters the needle tube, and the protection of the gas pressure is enhanced to prevent the tissue from suddenly losing pressure and have a layer of anti-falling protection when losing pressure.

The purpose of the invention can be realized by the following technical scheme:

an extirpation tool with anti-dropping structure for tumor operation comprises a pressure tube, an external connecting tube, a biopsy needle body, an external handle, a sealing plug, an embedded needle and a connector; the connector, the pressure pipe, the outer connecting pipe and the biopsy needle body are all cylindrical tubular structures, the outer connecting pipe is installed at one end of the plane of the connector, the pressure pipe is installed at the other end of the plane of the connector, the sealing plug is installed in the middle of the side face of the cylinder of the connector, the embedded needle is installed in the position, coinciding with the central line, of the interior of the sealing plug, the biopsy needle body is installed on the other side of the side face of the cylinder of the connector and the central line of the sealing plug, the biopsy needle body is fixedly installed on the connector, and the outer handle;

the middle position of the side edge of the cylinder of the connector is provided with an upper through hole, the periphery of the upper through hole is provided with a third external thread pipe on a side platform of the connector, the opposite position of the upper through hole is provided with a lower through hole, two side surfaces of the central line of the connector are respectively provided with a first external thread pipe and a second external thread pipe, two ends of the connector and the end surfaces of the first external thread pipe and the second external thread pipe are of a closed structure, the diameter of the lower through hole is the same as the outer diameter of the biopsy needle body, the diameter of the upper through hole is 8-20 times of that of the lower through hole, the diameter of the third external thread pipe is 3-5 times of that of the upper through hole, and the diameter of the first external thread pipe is the same as;

the lower end of the sealing plug is a conical sealing body, the conical structure of the sealing body is made of rubber, the conical backflow-preventing nozzle is arranged at the top end of the cone of the sealing body and made of silica gel, the diameter of the backflow-preventing nozzle is half of the inner diameter of the biopsy needle body, the sealing body at the tail of the cone is of a cylindrical structure, the cylindrical structure is made of plastic, a sealing handle is arranged above the cylindrical structure, the sealing handle is made of rubber, the diameter of the sealing handle is 1.5 times of the maximum diameter of the sealing body, a middle hollow pipe is arranged on the central line of the sealing plug, the diameter of the middle hollow pipe is the same as that of the backflow-preventing nozzle, and the middle hollow pipe is used for installing the embedded needle;

wherein, the diameter of embedded needle is the fourth of biopsy needle body internal diameter, and the one end of embedded needle is installed through the welding and is had the embedded barb of elastic stress, and the diameter of embedded barb is half of embedded needle diameter, and the embedded needle other end is installed through the welding and is embedded spacing, and embedded spacing is cylindric structure, and embedded spacing diameter is the quadruple of biopsy needle body diameter, and embedded spacing is installed in the cover stopper, and the cover stopper is the plastics material, and the diameter of cover stopper is the twice of embedded spacing diameter.

As a further scheme of the invention, a closed piston is arranged in the pressure pipe, the closed piston is in sealed contact with the inner wall of the pressure pipe, one end of the closed piston, which is communicated with the outside air, is provided with a connecting cylinder, the length of the connecting cylinder and the closed piston is greater than that of the pressure pipe, the other end of the connecting cylinder is provided with a pressure handle, the diameter of the pressure handle is 2-3 times of that of the connecting cylinder, and the inner wall of the outermost side of the pressure pipe is provided with a limit block which is used for limiting the position of the closed.

As a further scheme of the invention, the outer connecting pipe is of a two-section cylindrical structure, the diameter of a cylinder at the outermost side of the outer connecting pipe is smaller than that of a cylinder arranged on the first outer threaded pipe, a one-way ball valve is arranged on a small cylindrical pipe body at the outer side of the outer connecting pipe, the one-way ball valve is arranged in the direction of air inlet sealing of the connector and air outlet opening of the connector, and internal threads are arranged on the inner wall of a large cylindrical pipe body at the inner side of the outer connecting pipe.

As a further scheme of the invention, the top end of the biopsy needle body is an oval needle point, the other end of the biopsy needle body is a transparent pipeline, and pipe scales are arranged on the outer part of the biopsy needle body, the scales of the pipe scales are enlarged towards the direction of the oval needle point, and the zero scales of the pipe scales are on the same plane with the embedded needle and the embedded barb welding point.

As a further scheme of the invention, the external handle consists of a handle groove body and a handle cylinder, wherein a handle internal thread is arranged inside the handle cylinder, the handle internal thread is matched and installed with an external thread on a third external thread pipe, the height of the handle cylinder is the same as that of the third external thread pipe, the handle groove body is grooved from the position of one third of the diameter on an axial projection plane, a handle external groove is arranged on the outer surface of the handle groove body, and the width of the handle external groove is larger than that of a human finger.

As a further aspect of the present invention, the coinciding centerlines of the upper connecting through-hole, the lower connecting through-hole and the third externally threaded pipe on the connector intersect and are perpendicular to the coinciding centerlines of the first externally threaded pipe and the second externally threaded pipe.

The working mode of the ablation tool with the anti-falling structure for the tumor surgery specifically comprises the following steps:

step one, an external connecting pipe is arranged on a first external threaded pipe with a rubber gasket, a sealing plug is arranged on an upper connecting through hole, an embedded needle extends out of a middle hollow pipe to the outside of a backflow prevention nozzle, a sleeve is tightly plugged on the sealing plug by fingers, and finally a handle cylinder is arranged on a third external threaded pipe with a rubber gasket;

step two, holding an external handle to find an operation position, inserting the elliptic needle point into skin tissue and extending into a tumor tissue area, pushing a pressure handle to the innermost position, and installing a pressure pipe on a second external thread pipe with a rubber gasket;

step three, stabilizing the exposed part and the external handle of the biopsy needle body, pulling the sealing plug outwards to form a section so that a gap is formed between the backflow prevention nozzle and the lower connecting through hole, pulling the pressure handle to enable the sealing piston to suck the tumor tissue at the elliptical needle tip into the biopsy needle body, pushing the sealing plug downwards to hermetically connect the lower connecting through hole when the tumor tissue is not sucked up once, disconnecting a channel between the biopsy needle body and the connector, and pushing the pressure pipe to enable the gas to flow into the external air from the one-way ball valve;

step four, when the pressure pull handle is pushed to the bottom, the sealing plug is pulled up again to enable a gap to be reserved between the backflow prevention nozzle and the lower connecting through hole, the pressure pull handle is lifted outwards, the tumor tissue is continuously moved from the biopsy needle body to the connector position until the tumor tissue moves to the position of the embedded barb, the pressure pull handle is stopped being lifted, and the biopsy needle body is slowly pulled outwards;

and step five, preventing the tumor tissue from falling off under the common protection action of the gas pressure formed by the embedded barb and the pressure pipe.

The invention has the beneficial effects that:

1. this tumour operation is with excision instrument with anti-disengaging structure passes through the through-hole under the connection and fixes the plane one end of biopsy needle body on the connector through the welding, guarantees that the weld joint is encapsulated situation, connects the diameter of going up the through-hole and is far greater than the installation and the removal of connecting the sealing plug of being convenient for down the through-hole, and the size of third external screw thread pipe needs the diameter that is fit for the hand operation, is convenient for install outside handle, makes the one hand both can wrap up outside handle completely, and the puncture in-process biopsy needle body of being convenient for enters into the human body.

2. The sealing plug is made of rubber, silica gel and plastic, the lower end of the conical sealing body of the rubber part has the effect of being connected with the lower through hole in a sealing mode, the sealing handle of the rubber part has the effect of being connected with the upper through hole in a sealing mode, the sealing plug is limited in position of the sealing plug, the cylindrical sealing body of the plastic part is convenient for the sealing plug to slide back and forth on the upper through hole, gas is convenient to discharge and seal, the backflow preventing nozzle made of silica gel protects tissues drawn out by biopsy to contact with chemical materials made of other materials to generate pathological changes, and the accuracy of biopsy is guaranteed.

3. The sleeve stopper is injectd embedded spacing and embedded needle position to thereby can not receive the top of external pressure extrusion embedded needle to puncture the sealing plug because of embedded barb when running into the impact force, lead to embedded needle unable the use, embedded barb catches on the inspiratory tissue of biopsy needle body, prevents to lose external pressure or certain position in the human body suddenly and loses the condition that interior pressure is absorbed by human body inside again and take place to the in-process of upwards lifting and pulling the operation.

4. The pressure tube sucks out air in the connector and the biopsy needle body through the back-and-forth pumping of the closed piston, and forms larger negative pressure between the elliptic needle tip and the tumor tissue of the human body, so that the tissue is taken down and sucked into the biopsy needle body; when the pressure handle is pulled outwards, the one-way ball valve on the outer connecting pipe seals the connector, and when the pressure handle is pushed inwards, the one-way ball valve is opened to discharge the gas in the connector and the pressure pipe outwards, so that a linkage structure which sucks the gas from the biopsy needle body and discharges the gas from the outer connecting pipe is formed; the outer recess of handle is used for increasing the frictional force of outside handle, makes medical personnel when the operation accurate stretch into the position of getting the tissue with the biopsy needle body to guarantee the stationarity of operation, the handle cell body is convenient for pull out and press tight the sealing plug, also can make the cover stopper on the embedded needle of operation compress tightly with finger or instrument, thereby promotes this instrument and reaches anticipated effect at the during operation.

5. The connector of the invention connects the pressure pipe, the sealing plug, the outer connecting pipe and the biopsy needle body together, and all the passages are communicated under the condition without the sealing plug, when the pressure pipe is pulled out and air is pumped out, the outer connecting pipe and the sealing plug are closed, the pumped air is sucked from the top end of the biopsy needle body, is stored in the pressure pipe through the connector, and is discharged to the outside of the removing tool through the outer connecting pipe through the biopsy needle body sealed by the sealing plug, thereby achieving the purpose of continuously pressurizing and sucking out tumor tissues and hanging the tumor tissues upside down on the embedded needle, and achieving the double anti-falling function of the combined action of the air pressure and the hook.

Drawings

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

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is an enlarged schematic view of the position of the connector according to the present invention.

Fig. 3 is a schematic sectional view of the connector of the present invention.

Fig. 4 is a schematic structural diagram of the working state of the sealing plug and the embedded needle in the invention.

Fig. 5 is a schematic structural diagram of a sealing plug and an embedded needle to be activated.

Fig. 6 is a schematic view of the external structure of a biopsy needle according to the present invention.

Fig. 7 is a three-dimensional structure diagram of the external handle according to the present invention.

Fig. 8 is a schematic axial top view of the external handle according to the present invention.

Reference numerals: the device comprises a pressure pipe 1, a pressure handle 11, a limiting block 12, a connecting cylinder 13, a closed piston 14, a sealing plug 2, a sealing handle 21, a sealing body 22, a middle hollow pipe 23, a backflow prevention nozzle 24, an embedded needle 3, an embedded barb 31, an embedded limiting block 32, a sleeve plug 33, a connector 4, an upper through hole 41, a lower through hole 42, a first external threaded pipe 43, a second external threaded pipe 44, a third external threaded pipe 45, an external connecting pipe 5, a one-way ball valve 51, an internal thread 52, a biopsy needle body 6, an elliptical needle point 61, a pipe scale 62, an external handle 7, a handle groove body 71, a handle cylinder 72, a handle internal thread 721 and a handle external groove 73.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-8, the invention is a tumor surgical extirpation tool with anti-falling structure, comprising a pressure tube 1, an external connecting tube 5, a biopsy needle body 6 and an external handle 7, and further comprising a sealing plug 2, an embedded needle 3 and a connector 4; the connector 4, the pressure pipe 1, the outer connecting pipe 5 and the biopsy needle body 6 are all cylindrical tubular structures, the outer connecting pipe 5 is installed at one end of the plane of the connector 4, the pressure pipe 1 is installed at the other end of the plane of the connector 4, the sealing plug 2 is installed at the middle position of the side surface of the cylinder of the connector 4, the inner embedded needle 3 is installed at the position, overlapped with the central line, inside the sealing plug 2, the biopsy needle body 6 is installed on the central line of the sealing plug 2 and the other side of the side surface of the cylinder of the connector 4, the biopsy needle body 6 is fixedly installed on the connector 4, and the outer handle 7 is installed on the side; the connector 4 connects the pressure tube 1, the sealing plug 2, the outer connecting tube 5 and the biopsy needle body 6 together, and all the channels are communicated under the condition that the sealing plug 2 is not provided, when the pressure tube 1 is pulled out and pumped, the outer connecting tube 5 and the sealing plug 2 are closed, the pumped gas is sucked from the top end of the biopsy needle body 6, stored in the pressure tube 1 through the connector 4, and exhausted to the outside of the extirpation tool through the outer connecting tube 5 through the biopsy needle body 6 sealed by the sealing plug 2;

wherein, the middle position of the side of the cylinder of the said interface unit 4 has upper through hole 41, connect the peripheral side platform of the interface unit 4 with the third external screw thread tube 45 on the upper through hole 41, connect the opposite position of the upper through hole 41 to have lower through holes 42 of connection, there are first external screw thread tube 43 and second external screw thread tube 44 on the both sides of central line of the interface unit 4 separately, both ends of the interface unit 4 and first external screw thread tube 43 and end of the second external screw thread tube 44 are the closed structure, connect the diameter of the lower through hole 42 and biopsy needle body 6 external diameter the same, connect 8-20 times of the diameter of the lower through hole 42 of connection to connect the diameter of the upper through hole 41, the diameter of the third external screw thread tube 45 is connecting 3-5 times of the upper through hole 41, the diameter of the first external screw thread tube 43 is the same as diameter; the planar end of the biopsy needle body 6 is fixed on the connector 4 through the connecting lower through hole 42 by welding, a welding port is in a sealing state, the diameter of the connecting upper through hole 41 is far larger than that of the connecting lower through hole 42, so that the sealing plug 2 can be conveniently installed and moved, the size of the third external thread pipe 45 needs to be suitable for the diameter of hand operation, an external handle 7 is conveniently installed, a single hand can completely wrap the external handle 7, and the biopsy needle body 6 can conveniently enter a human body in the puncture process;

the lower end of the sealing plug 2 is a conical sealing body 22, the conical structure of the sealing body 22 is made of rubber, the conical top end of the sealing body 22 is provided with a conical backflow-preventing nozzle 24, the backflow-preventing nozzle 24 is made of silica gel, the diameter of the backflow-preventing nozzle 24 is half of the inner diameter of the biopsy needle body 6, the sealing body 22 at the tail of the cone is of a cylindrical structure, the cylindrical structure is made of plastic, a sealing handle 21 is arranged above the cylindrical structure, the sealing handle 21 is made of rubber, the diameter of the sealing handle 21 is 1.5 times of the maximum diameter of the sealing body 22, a middle hollow pipe 23 is arranged on the central line of the sealing plug 2, the diameter of the middle hollow pipe 23 is the same as that of the backflow-preventing nozzle 24, and the middle hollow pipe 23 is used for installing; the sealing plug 2 is made of rubber, silica gel and plastic, the lower end of the conical sealing body 22 of the rubber part has the function of being in sealing connection with the lower through hole 42, the sealing handle 21 of the rubber part has the function of being in sealing connection with the upper through hole 41 and has the function of limiting the position of the sealing plug 2, the cylindrical sealing body 22 of the plastic part is convenient for the sealing plug 2 to slide back and forth on the upper through hole 41 so as to be convenient for gas discharge and sealing, the backflow prevention nozzle 24 made of silica gel protects tissues drawn out by biopsy from contacting chemical materials made of other materials to generate pathological changes, and the accuracy of biopsy is ensured;

wherein, the diameter of the embedded needle 3 is one fourth of the inner diameter of the biopsy needle body 6, one end of the embedded needle 3 is provided with an embedded barb 31 with elastic stress by welding, the diameter of the embedded barb 31 is half of the diameter of the embedded needle 3, the other end of the embedded needle 3 is provided with an embedded limit 32 by welding, the embedded limit 32 is in a cylindrical structure, the diameter of the embedded limit 32 is four times of the diameter of the biopsy needle body 6, the embedded limit 32 is arranged in a sleeve plug 33, the sleeve plug 33 is made of plastic material, the diameter of the sleeve plug 33 is twice of the diameter of the embedded limit 32, the sleeve plug 33 limits the positions of the embedded limit 32 and the embedded needle 3, and the embedded seal plug 31 can not be used because the embedded barb 31 receives external pressure to extrude the top end of the embedded needle 3 to puncture the 2, so that the embedded needle 3 can not be used, the embedded barb 31 hooks the sucked tissue of the biopsy needle, preventing the occurrence of a situation in which external pressure is suddenly lost or internal pressure is lost at a certain position in the human body to be absorbed again by the inside of the human body during the upward pulling operation.

As shown in fig. 1, a closed piston 14 is installed inside the pressure tube 1, the closed piston 14 is in sealed contact with the inner wall of the pressure tube 1, a connecting cylinder 13 is installed at one end of the closed piston 14, which is communicated with the outside air, the length of the connecting cylinder 13 and the length of the closed piston 14 are greater than that of the pressure tube 1, a pressure handle 11 is installed at the other end of the connecting cylinder 13, the diameter of the pressure handle 11 is 2-3 times that of the connecting cylinder 13, a limiting block 12 is arranged on the inner wall of the outermost side of the pressure tube 1, and the limiting block 12 is used; the pressure tube 1 sucks out the air in the connector 4 and the biopsy needle 6 by the back and forth drawing of the sealing piston 14, and forms a large negative pressure between the elliptical needle point 61 and the tumor tissue of the human body, thereby taking down the tissue and sucking the tissue into the biopsy needle 6.

As shown in fig. 1, the outer connecting pipe 5 is a two-section cylindrical structure, the diameter of the outermost cylinder of the outer connecting pipe 5 is smaller than the diameter of the cylinder installed on the first outer threaded pipe 43, a one-way ball valve 51 is installed on the small cylindrical pipe body outside the outer connecting pipe 5, the one-way ball valve 51 is installed to close the air inlet of the connector 4, the air outlet of the connector 4 is opened, and the inner wall of the large cylindrical pipe body inside the outer connecting pipe 5 is provided with an internal thread 52; when the pressure handle 11 is pulled outwards, the one-way ball valve 51 on the outer connecting pipe 5 seals the connector 4, and when the pressure handle 11 is pushed inwards, the one-way ball valve 51 is opened to discharge the gas in the connector 4 and the pressure pipe 1 outwards, so that a linkage structure that the gas is sucked from the biopsy needle body 6 and discharged from the outer connecting pipe 5 is formed.

As shown in fig. 1 and 6, the top end of the biopsy needle body 6 is an oval needle point 61, the other end of the biopsy needle body 6 is a transparent tube and is externally provided with a tube scale 62, the scale of the tube scale 62 is enlarged towards the oval needle point 61, and the zero scale of the tube scale 62 is on the same plane with the welding point of the embedded needle 3 and the embedded barb 31.

As shown in fig. 7 and 8, the external handle 7 is composed of a handle groove body 71 and a handle cylinder 72, a handle internal thread 721 is arranged inside the handle cylinder 72, the handle internal thread 721 is matched and installed with an external thread on the third external thread tube 45, the height of the handle cylinder 72 is the same as that of the third external thread tube 45, the handle groove body 71 is grooved from a position of one third of the diameter on the axial projection plane, a handle external groove 73 is arranged on the outer surface of the handle groove body 71, the width of the handle external groove 73 is larger than the width of a human finger, the handle external groove 73 is used for increasing the friction force of the external handle 7, so that the medical staff can accurately extend the biopsy needle body 6 to the position for taking tissue during operation, and the stability of operation is ensured, the handle groove body 71 is convenient for pulling and pressing the sealing plug 2, and the sleeve plug 33 on the operation embedded needle 3 can be pressed by fingers or tools, so that the tools can be promoted to achieve the expected effect when in work.

As shown in fig. 3, the coincident center lines of the upper connecting through-hole 41, the lower connecting through-hole 42, and the third male threaded pipe 45 on the connector 4 intersect and are perpendicular to the coincident center lines of the first male threaded pipe 43 and the second male threaded pipe 44.

step one, an external connecting pipe 5 is arranged on a first external threaded pipe 43 with a rubber gasket, a sealing plug 2 is arranged on an upper connecting through hole 41, an embedded needle 3 extends out of a middle hollow pipe 23 to the outside of an anti-backflow nozzle 24, a sleeve plug 33 is tightly fastened on the sealing plug 2 by fingers, and finally a handle cylinder 72 is arranged on a third external threaded pipe 45 with a rubber gasket;

step two, holding the external handle 7 to find the operating position, inserting the elliptical needle point 61 into the skin tissue and extending into the tumor tissue area, pushing the pressure handle 11 to the innermost position, and installing the pressure tube 1 on the second external thread tube 44 with the rubber gasket;

step three, stabilizing the exposed part of the biopsy needle body 6 and the external handle 7, pulling the sealing plug 2 outwards for a section to ensure that a gap is reserved between the backflow prevention nozzle 24 and the lower connecting through hole 42, pulling the pressure handle 11 to ensure that the sealed piston 14 sucks the tumor tissue at the elliptic needle point 61 into the biopsy needle body 6, pushing the sealing plug 2 downwards to be hermetically connected with the lower connecting through hole 42 when the tumor tissue is not sucked up for one time, disconnecting the channel between the biopsy needle body 6 and the connector 4, and pushing the pressure pipe 1 to enable the gas to flow into the external air from the one-way ball valve 51;

step four, when the pressure handle 11 is pushed to the bottom, the sealing plug 2 is pulled up again to enable a gap to be reserved between the anti-backflow nozzle 24 and the lower connecting through hole 42, the pressure handle 11 is lifted outwards, the tumor tissue is continuously moved from the biopsy needle body 6 to the connector 4, until the tumor tissue moves to the position of the embedded barb 31, the pressure handle 11 is stopped being lifted, and the biopsy needle body 6 is slowly pulled out outwards;

and step five, preventing the tumor tissue from falling off under the double protection action of the gas pressure formed by the embedded barb 31 and the pressure tube 1.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing is merely exemplary and illustrative of the present invention and various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the scope of the invention as defined in the following claims.

Claims

1. An extirpation tool with an anti-falling structure for tumor surgery comprises a pressure pipe (1), an external connecting pipe (5), a biopsy needle body (6) and an external handle (7), and is characterized by further comprising a sealing plug (2), an embedded needle (3) and a connector (4); the connector (4), the pressure pipe (1), the outer connecting pipe (5) and the biopsy needle body (6) are cylindrical tubular structures, the outer connecting pipe (5) is installed at one end of the plane of the connector (4), the pressure pipe (1) is installed at the other end of the plane of the connector (4), the sealing plug (2) is installed at the middle position of the side face of the cylinder of the connector (4), the embedded needle (3) is installed at the position, overlapped with the central line, inside the sealing plug (2), of the center line, the biopsy needle body (6) is installed on the other side of the side face of the cylinder of the connector (4) and the central line of the sealing plug (2), the biopsy needle body (6) is fixedly installed on the connector (4), and the outer handle (7) is installed on the side face;

the middle position of the side edge of the cylinder of the connector (4) is provided with an upper through hole (41), the periphery of the upper through hole (41) is provided with a third external thread pipe (45) on a side platform of the connector (4), the opposite position of the upper through hole (41) is provided with a lower through hole (42), two side surfaces of the center line of the connector (4) are respectively provided with a first external thread pipe (43) and a second external thread pipe (44), two ends of the connector (4) and the end surfaces of the first external thread pipe (43) and the second external thread pipe (44) are of a closed structure, the diameter of the lower through hole (42) is the same as the external diameter of the biopsy needle body (6), the diameter of the upper through hole (41) is 8-20 times of the diameter of the lower through hole (42), the diameter of the third external thread pipe (45) is 3-5 times of the upper through hole (41), and the diameter of the first external thread pipe (43) is the same as the diameter of the second external thread;

the lower end of the sealing plug (2) is a conical sealing body (22), the conical structure of the sealing body (22) is made of rubber, the conical top end of the sealing body (22) is provided with a conical backflow-preventing nozzle (24), the backflow-preventing nozzle (24) is made of silica gel, the diameter of the backflow-preventing nozzle (24) is half of the inner diameter of the biopsy needle body (6), the sealing body (22) at the tail of the cone is of a cylindrical structure, the cylindrical structure is made of plastic, a sealing handle (21) is arranged above the cylindrical structure, the sealing handle (21) is made of rubber, the diameter of the sealing handle (21) is 1.5 times of the maximum diameter of the sealing body (22), a middle hollow tube (23) is arranged on the central line of the sealing plug (2), the diameter of the middle hollow tube (23) is the same as that of the backflow-preventing nozzle (24), and the middle hollow tube (23) is used for installing the embedded needle (3);

wherein, the diameter of embedded needle (3) is the fourth of biopsy needle body (6) internal diameter, the one end of embedded needle (3) is through welding installation embedded barb (31) that have elastic stress, the diameter of embedded barb (31) is half of embedded needle (3) diameter, embedded spacing (32) are installed through the welding to the embedded needle (3) other end, embedded spacing (32) are cylindric structure, the diameter of embedded spacing (32) is four times of biopsy needle body (6) diameter, install in cover stopper (33) embedded spacing (32), cover stopper (33) are the plastics material, the diameter of cover stopper (33) is the twice of embedded spacing (32) diameter.

2. The ablation tool with the anti-dropping structure for the tumor surgery is characterized in that a sealing piston (14) is installed inside the pressure tube (1), the sealing piston (14) is in sealing contact with the inner wall of the pressure tube (1), one end of the sealing piston (14) leading to the outside air is provided with a connecting cylinder (13), the length of the connecting cylinder (13) and the length of the sealing piston (14) are larger than that of the pressure tube (1), the other end of the connecting cylinder (13) is provided with a pressure handle (11), the diameter of the pressure handle (11) is 2-3 times of that of the connecting cylinder (13), the inner wall of the outermost side of the pressure tube (1) is provided with a limiting block (12), and the limiting block (12) is used for limiting the position of the sealing piston (14).

3. The extirpation tool with the anti-dropping structure for the tumor operation is characterized in that the outer connecting pipe (5) is of a two-section cylindrical structure, the diameter of the outermost cylinder of the outer connecting pipe (5) is smaller than that of the cylinder installed on the first outer threaded pipe (43), a one-way ball valve (51) is installed on the small cylindrical pipe body on the outer side of the outer connecting pipe (5), the one-way ball valve (51) is installed to close the air inlet of the connector (4), the air outlet of the connector (4) is opened, and internal threads (52) are arranged on the inner wall of the large cylindrical pipe body on the inner side of the outer connecting pipe (5).

4. The ablation tool with the anti-dropping structure for the tumor surgery is characterized in that the top end of the biopsy needle body (6) is an oval needle point (61), the other end of the biopsy needle body (6) is a transparent pipeline and is externally provided with a tube scale (62), the scale of the tube scale (62) is enlarged towards the oval needle point (61), and the natural positions of the welding points of the embedded needle (3) and the embedded barb (31) are on the same plane with the zero scale of the tube scale (62).

5. The extirpation tool with the anti-dropping structure for the tumor surgery is characterized in that the external handle (7) is composed of a handle groove body (71) and a handle cylinder (72), a handle internal thread (721) is arranged inside the handle cylinder (72), the handle internal thread (721) is installed on the external thread of the third external thread pipe (45) in a matching mode, the height of the handle cylinder (72) is the same as that of the third external thread pipe (45), the handle groove body (71) is grooved from the position of one third of the diameter of the axial projection plane, a handle external groove (73) is arranged on the outer surface of the handle groove body (71), and the width of the handle external groove (73) is larger than that of a human finger.

6. The ablation tool for tumor surgery with anti-detachment structure as claimed in claim 1, wherein the coincident central lines of the upper connecting through hole (41), the lower connecting through hole (42) and the third external threaded tube (45) on the connector (4) intersect with the coincident central lines of the first external threaded tube (43) and the second external threaded tube (44) and are perpendicular to each other.

7. The ablation tool with anti-detachment structure for tumor surgery as claimed in claim 1, wherein the operation mode of the ablation tool with anti-detachment structure for tumor surgery comprises the following steps:

step one, an external connecting pipe (5) is arranged on a first external threaded pipe (43) with a rubber gasket, a sealing plug (2) is arranged on an upper connecting through hole (41), an embedded needle (3) extends out of a middle hollow pipe (23) to the outside of an anti-backflow nozzle (24), a sleeve plug (33) is tightly fastened on the sealing plug (2) by fingers, and finally a handle cylinder (72) is arranged on a third external threaded pipe (45) with a rubber gasket;

step two, holding an external handle (7) to find an operation position, inserting an elliptical needle point (61) into skin tissue and extending into a tumor tissue area, pushing a pressure handle (11) to the innermost position, and installing a pressure pipe (1) on a second external thread pipe (44) with a rubber gasket;

step three, stabilizing the exposed part of the biopsy needle body (6) and an external handle (7), pulling out the sealing plug (2) to a certain extent to ensure that a gap is reserved between the anti-backflow nozzle (24) and the lower connecting through hole (42), pulling the pressure handle (11) to ensure that the sealed piston (14) sucks the tumor tissue at the elliptic needle point (61) into the biopsy needle body (6), pushing the sealing plug (2) downwards to be in sealing connection with the lower through hole (42) when the tumor tissue is not sucked up at one time, disconnecting a channel between the biopsy needle body (6) and the connector (4), and pushing the pressure pipe (1) to enable the gas to flow into the external air from the one-way ball valve (51);

and fourthly, when the pressure handle (11) is pushed to the bottom, the sealing plug (2) is pulled up again to enable a gap to be reserved between the backflow preventing nozzle (24) and the lower connecting through hole (42), the pressure handle (11) is lifted outwards, the tumor tissue is continuously moved from the biopsy needle body (6) to the connector (4) until the tumor tissue is moved to the position of the embedded barb (31), the pressure handle (11) is stopped being lifted, and the biopsy needle body (6) is slowly pulled outwards.