CN110772305A

CN110772305A - Puncture outfit for laparoscopic surgery

Info

Publication number: CN110772305A
Application number: CN201911156102.1A
Authority: CN
Inventors: 温正德; 骆珊; 王维明; 俞富祥
Original assignee: First Affiliated Hospital of Wenzhou Medical University
Current assignee: First Affiliated Hospital of Wenzhou Medical University
Priority date: 2019-11-22
Filing date: 2019-11-22
Publication date: 2020-02-11
Anticipated expiration: 2039-11-22
Also published as: CN110772305B

Abstract

The invention discloses a puncture outfit for laparoscopic surgery, which has the technical scheme that the puncture outfit comprises a puncture core and a puncture shell, wherein the puncture shell is arranged in a hollow cylindrical structure, a puncture air bag is arranged between the puncture shell and the puncture core and comprises an inflation cavity surrounded by flexible materials, an inflation component is arranged on the puncture air bag, the puncture air bag comprises an outer inflation part and an inner inflation part arranged on the inner wall of the outer inflation part, the outer inflation part is arranged in a hollow cylindrical structure, a channel is arranged in the outer inflation part, the inflation component expands and extends the outer inflation part outwards in the inflation process of the puncture air bag until the outer inflation part is in sealing contact with the abdominal wall of a patient, the inner inflation part is gradually inflated and expanded until the channel is blocked, inflation extension parts are arranged at two ends of the outer inflation part, the outer inflation part is arranged in an I-shaped structure, and the puncture outfit can ensure the tightness between the puncture tube and a cut and between, prevent the gas from leaking, and make the surgical instrument have wider operation range.

Description

Puncture outfit for laparoscopic surgery

Technical Field

The invention relates to the technical field of medical instruments, in particular to a puncture outfit for laparoscopic surgery.

Background

The laparoscopic surgery is to make a proper number of small 1cm to 2cm incisions in the waist, then insert a pneumoperitoneum needle through the incisions, switch on a carbon dioxide inflator after confirming that the puncture is successful, so that the abdomen is effectively supported, increase the operation space of a surgeon, then insert a pipeline-shaped working channel into each incision, and then operate the instrument in vivo through the pipelines.

The conventional puncture outfit generally includes a puncture tube and a puncture core for puncturing, the puncture core is inserted into the puncture tube, and after the puncture core is opened from a human body, the puncture core is withdrawn from the puncture tube, and the puncture tube is fixed to the human body, and then a surgeon inserts a surgical instrument into the human body through a channel of the puncture tube, thereby performing an effective surgical operation.

In the operation process, the puncture tube of the existing puncture outfit is longer and made of hard materials when being fixed on a human body, so that the surgical instrument touches the upper end and the lower end of the puncture tube in the swing process, the swing range of the surgical instrument is very limited, and the limitation of the operation range of a surgeon is caused; even some of the short instruments: if the lithotomy forceps are difficult to apply, only the puncture outfit can be taken out, and the lithotomy operation is carried out under the condition of gas leakage and lithotomy; and in the swing process of the surgical instrument, gaps may occur between the puncture tube and the surgical instrument and between the puncture tube and the incision, thereby causing gas leakage from the abdomen and reducing the supporting space of the abdomen, thereby affecting the operating space and the visual range of the operator, besides, if the surgical instruments in the puncture tube need to be changed during the operation, the gas in the abdomen is easy to leak from the passage of the puncture tube and the gas in the abdomen is also easy to leak out in the changing process, thereby reducing the supporting space of the abdomen, affecting the operation space and the visual range of the operator, when the gas in the abdominal cavity leaks too much, even the gas injection in the abdominal cavity needs to be wanted again, so that the doctor can have enough visual range and operation space in the operation process, the operation time is prolonged, the operation progress is slowed down, and the workload of the doctor is increased.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a puncture outfit for laparoscopic surgery, which can ensure the tightness between a puncture tube and an incision and between the puncture tube and a surgical instrument, prevent gas from leaking and enable the surgical instrument to have a wider operation range.

In order to achieve the purpose, the invention provides the following technical scheme: a puncture outfit for laparoscopic surgery comprises a puncture core used for cutting the skin of a patient and a puncture shell used for wrapping the puncture core and being attached to the abdominal wall of the patient, wherein the puncture shell is of a hollow cylindrical structure, a puncture air bag capable of controlling expansion is arranged between the puncture shell and the puncture core, the puncture air bag comprises an inflation cavity formed by surrounding flexible materials, an inflation component capable of inflating and filling the inflation cavity is arranged on the puncture air bag, the puncture air bag comprises an outer inflation part which can be expanded and fixed on the abdominal wall of the patient and the outer wall of which can be in sealing butt joint with the abdominal wall of the patient and an inner inflation part which is arranged on the inner wall of the outer inflation part and is used for sealing butt joint with surgical instruments with different diameters, the outer inflation part is arranged in a hollow cylindrical structure, and a channel for the surgical instruments to pass through is arranged in the outer inflation part, the outer inflating part expands outwards in the process of inflating the puncture air bag by the inflating part until the outer inflating part is in sealing butt joint with the abdominal wall of a patient, the inner inflating part inflates and expands gradually until the passage is blocked, the two ends of the outer inflating part are provided with inflating extending parts used for inflating and expanding to clamp the upper end and the lower end of the abdominal wall, and the outer inflating part is arranged in an I-shaped structure.

The invention is further configured to: the outer inflating part and the inner inflating part are arranged integrally, the inflating part comprises a first inflating pipe communicated with the inflating cavity and a first inflator for inflating the inflating cavity through the first inflating pipe, and the inflating part expands and extends out of the outer inflating part and the inner inflating part simultaneously in the inflating process of the puncture air bag until the outer inflating part and the inner inflating part are in sealing abutment with the abdominal wall of a patient and surgical instruments.

The invention is further configured to: the outer portion of aerifing sets up with the portion components of a whole that can function independently of the portion of aerifing of interior, interior portion of aerifing is including aerifing the first shutoff gasbag that stretches out to the passageway internal expansion and setting up a plurality of inflating valves that are used for aerifing the shutoff passageway on first shutoff gasbag inside wall, inflating valve and adjacent inflating valve butt and form the incision that supplies surgical instruments to pass, aerify in-process a plurality of inflating valves butt each other and shutoff passageway to first shutoff gasbag, abdominal cavity internal gas pressure can make the inflating valve restore and shutoff passageway when surgical instruments are extracted from the incision.

The invention is further configured to: interior portion of aerifing is including aerifing the first shutoff gasbag that stretches out to passageway internal expansion and setting up a plurality of inflating valves that are used for aerifing the shutoff passageway on first shutoff gasbag inside wall, inflating the valve and setting up along first shutoff gasbag inside wall circumference align to grid, aerify in-process a plurality of inflating valves respectively rather than adjacent inflating valve butt and shutoff passageway to first shutoff gasbag, inflating the valve and adjacent inflating valve butt and form the incision that supplies surgical instruments to pass, abdominal cavity internal gas pressure can make and inflate the valve and restore and shutoff passageway when surgical instruments extract from the incision.

The invention is further configured to: the inner inflating part comprises a second plugging air bag which is inflated to expand and extend out of the channel and a plugging ring bag which is arranged on the inner side wall of the second plugging air bag and used for inflating the plugging channel, the plugging ring bag is arranged in an annular structure, the plugging ring bag expands inwards and extends out of the second plugging air bag until reaching the plugging channel in the inflating process of the second plugging air bag, and the plugging ring bags are axially arranged along the second plugging air bag.

The invention is further configured to: the inner side wall of the outer inflating portion and the outer side wall of the inner inflating portion are both made of medical plastic materials, and the outer side wall of the outer inflating portion and the inner side wall of the inner inflating portion are both made of medical rubber materials.

The invention is further configured to: the inner cavity of the outer inflating part is divided into a lower inflating part close to the inside of the body and an upper inflating part close to the outside of the body through a separating film, a plurality of air vents are arranged on the separating film, one end of an air outlet of the second inflating tube is inserted into the inner cavity of the lower inflating part, the lower inflating part is firstly abutted with the abdominal wall in the inflating process of the outer inflating part through an inflating component, and the upper inflating part is abutted with the abdominal wall in an expanding manner.

The invention is further configured to: the puncture gasbag is provided with a plurality of creases that can make the puncture gasbag accomodate inwards along its circumference.

The invention is further configured to: the outer side wall of the puncture shell is marked with scales representing the position of the puncture air bag.

In conclusion, the invention has the following beneficial effects: the puncture air bag is designed, when a puncture core is used for puncturing an incision, the puncture shell and the puncture air bag can be inserted into an abdominal wall together, then the puncture core and the puncture shell are sequentially pulled out, and the puncture air bag only slightly longer than the abdominal wall is left on the abdominal wall of a patient (the part slightly longer than the abdominal wall is an inflation extension part at the upper end and the lower end of an external inflation part); the design of the inflatable component can independently control the expansion and contraction of the puncture air bag, so that the channel suitable for various surgical instruments with different sizes and diameters can be conveniently adjusted when the surgical instruments need to be replaced in the operation process, the airtightness of the incision of a patient can be ensured when any surgical instrument is used, the problem of gas leakage is effectively reduced, and the operation quality is ensured; the design of the inflation extension part can play the following two roles: 1. the puncture air bag can be clamped at the upper side and the lower side of the abdominal wall, so that the puncture air bag is stable enough and can not fall off in the operation process; 2. can oppress in both sides about the stomach wall, not only can encrypt the leakproofness between puncture gasbag and the patient stomach wall, thereby reduce the amount of bleeding of blood vessel to the vascular oppression of certain degree of patient's incision moreover.

Drawings

FIG. 1 is a schematic perspective view of a split puncture air bag when not in operation;

FIG. 2 is a schematic view of a three-dimensional structure of the split puncture air bag during operation;

FIG. 3 is a sectional view of a split puncture balloon designed with a sealing ring;

FIG. 4 is a sectional view of a split puncture balloon designed with an inflation flap;

FIG. 5 is a perspective view of the puncture device;

fig. 6 is a schematic perspective view of the integrated puncture balloon when not in operation.

Reference numerals: 1. puncturing the core; 2. puncturing the housing; 3. puncturing the air bag; 31. an inflatable cavity; 32. an inflation member; 321. a first gas-filled tube; 322. a second gas-filled tube; 323. a third gas-filled tube; 33. an outer inflatable portion; 331. an inflation extension; 332. separating the membrane; 3321. a vent; 333. a lower inflatable portion; 334. an upper inflation part; 335. a channel; 34. an inner inflatable portion; 341. a first occlusion balloon; 342. an inflation flap; 3421. cutting; 343. a second occlusion balloon; 344. a blocking bag; 35. folding; 4. the abdominal wall.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "bottom" and "top," "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

Referring to fig. 1 to 6, in order to achieve the above object, the present invention provides the following technical solutions: a puncture outfit for laparoscopic surgery comprises a puncture core 1 for cutting the skin of a patient and a puncture shell 2 for wrapping the puncture core 1 and being jointed with the abdominal wall 4 of the patient, wherein the puncture shell 2 is arranged in a hollow cylindrical structure, a puncture air bag 3 capable of controlling expansion is arranged between the puncture shell 2 and the puncture core 1, the puncture air bag 3 comprises an inflatable cavity 31 surrounded by flexible materials, the puncture air bag 3 is designed, when the puncture core 1 is used for puncturing an incision, the puncture shell 2 and the puncture air bag 3 can be inserted into the abdominal wall 4 together, then the puncture core 1 and the puncture shell 2 are pulled out in sequence, only the puncture air bag 3 slightly longer than the thickness of the abdominal wall 4 is left on the abdominal wall 4 of the patient (the part slightly longer than the thickness of the abdominal wall 4 is an inflatable extension part 331 at the upper end and the lower end of an outer inflatable part 33), and the puncture air bag 3 is made of the flexible materials, when an operator needs to seek a proper position by swinging the surgical instrument during operation, the puncture air bag 3 is shorter and the puncture air bag 3 has certain elasticity, so that the surgical instrument can be ensured to have a sufficient swinging range in the swinging process, and the operable space of the operator is increased; the puncture air bag 3 is provided with an inflation component 32 which can inflate and fill the inflation cavity 31, and the inflation component 32 is designed to be capable of automatically controlling the expansion and contraction of the puncture air bag 3, so that a channel 335 suitable for various surgical instruments with different sizes and diameters can be conveniently adjusted when surgical instruments need to be replaced in the surgical process, the airtightness of the incision of a patient can be guaranteed when any surgical instrument is used, the problem of gas leakage is effectively reduced, and the surgical quality is guaranteed; the puncture air bag 3 comprises an outer inflation part 33 which can be expanded and fixed on the abdominal wall 4 of a patient and the outer wall of which can be in sealing contact with the abdominal wall 4 of the patient, and an inner inflation part 34 which is arranged on the inner wall of the outer inflation part 33 and is used for being in sealing contact with surgical instruments with different diameters, wherein the outer inflation part 33 is arranged in a hollow cylindrical structure, a channel 335 for the surgical instruments to pass through is arranged in the outer inflation part 33, the inflation part 32 expands the outer inflation part 33 outwards in the process of inflating the puncture air bag 3 until the outer inflation part is in sealing contact with the abdominal wall 4 of the patient, the inner inflation part 34 is gradually inflated and expanded until the channel 335 is sealed, inflation extension parts 331 used for inflating and expanding the upper end and the lower end of the abdominal wall 4 are arranged at the two ends of the outer inflation part 33, the outer inflation part 33 is arranged in an I-shaped structure, and the: 1. the puncture air bag 3 can be clamped at the upper side and the lower side of the abdominal wall 4, so that the puncture air bag 3 is stable enough and can not fall off in the operation process; 2. can oppress in both sides about the stomach wall 4, not only can encrypt the leakproofness between puncture gasbag 3 and patient's stomach wall 4, thereby reduce the amount of bleeding of blood vessel to the vascular oppression of certain degree of patient's incision moreover.

The specific use method comprises the following steps: firstly, conventionally establishing pneumoperitoneum, placing a puncture air bag 3 in a puncture shell 2 before puncture, sequentially penetrating a puncture core 1 through the puncture shell 2 and a channel 335 of the puncture air bag 3, during puncture, puncturing the incision by the puncture core 1 together with the puncture shell 2, holding the puncture shell 2 by hand when the puncture has obvious falling empty feeling, pulling out the puncture core 1, then starting to inflate an inflation cavity 31 of the puncture air bag 3 through an inflation part 32, gradually pulling out the puncture shell 2 in the inflation process, only leaving the puncture air bag 3 at the abdominal wall 4 of a patient, and then selecting a proper surgical instrument to be inserted into the channel 335 until an outer inflation part 33 of the puncture air bag 3 is in sealing abutting joint with the abdominal wall 4 of the patient and an inner inflation part 34 is in sealing abutting joint with the surgical instrument, thereby ensuring the air tightness in the surgical process.

The outer inflating part 33 and the inner inflating part 34 are integrally arranged, the inflating part 32 comprises a first inflating pipe 321 communicated with the inflating cavity 31 and a first inflator for inflating the inflating cavity 31 through the first inflating pipe 321, the outer inflating part 33 and the inner inflating part 34 are simultaneously inflated and extend out until the outer inflating part 33 and the inner inflating part 34 are in sealing and abutting joint with the abdominal wall 4 of a patient and surgical instruments in the inflating process of the puncture air bag 3 by the inflating part 32, the outer inflating part 33 and the inner inflating part 34 are arranged in an integral structure, the outer inflating part 33 and the inner inflating part 34 can be inflated together through the first inflating pipe 321, so that the outer inflating part 33 and the inner inflating part 34 can be expanded and extended outwards and inwards together, the operation speed is greatly accelerated, the operation efficiency is improved, the operation time is saved, and besides, the first inflator can have multiple choices such as: an inflating air bag, an inflating needle tube and other instruments capable of controlling the inflating flow manually and reasonably.

The outer inflation part 33 and the inner inflation part 34 are separately arranged, the outer side wall of the inner inflation part 34 is fixedly connected with the inner side wall of the outer inflation part 33, and the inflation component 32 comprises a second inflation tube 322 and a third inflation tube 323 which are respectively communicated with the inner cavity of the outer inflation part 33 and the inner cavity of the inner inflation part 34, a second inflator which inflates the inner cavity of the outer inflation part 33 through the second inflation tube 322, and a third inflator which inflates the inner cavity of the inner inflation part 34 through the third inflation tube 323.

According to the preferable scheme of the external inflation part 33 and the internal inflation part 34, the external inflation part 33 and the internal inflation part 34 are arranged separately, and the second inflation tube 322 is matched with a second inflator to perform independent inflation filling on the external inflation part 33, so that the external inflation part 33 is tightly attached to the abdominal wall 4 of the patient, sufficient sealing performance between the abdominal wall 4 of the patient and the puncture air bag 3 is ensured, and gas in the abdominal cavity is prevented from leaking from the space between the external inflation part 33 and the abdominal wall 4 of the patient; the third inflation tube 323 is matched with the third inflator to individually inflate and fill the inner inflation portion 34, so that the inner inflation portion 34 is tightly attached to the surgical instrument, sufficient sealing performance between the puncture airbag 3 and the surgical instrument is ensured, leakage of intra-abdominal gas from the inner inflation portion 34 to the surgical instrument is prevented, besides, in the integral design of the outer inflation portion 33 and the inner inflation portion 34, because the outer inflation portion 33 and the inner inflation portion 34 are communicated, when the inner inflation portion 34 is deflated, a gap may occur between the outer inflation portion 33 and the abdominal wall 4 of the patient, leakage of intra-abdominal gas is avoided, the height of the abdominal cavity is reduced, the visual range and the operation space of a surgeon are reduced, and the operation process is affected, the second inflator and the third inflator are selected as the inflation airbag, the first inflator, and the second inflator can reasonably control inflation flow for a person, An inflatable needle tube, etc.

The inner inflatable part 34 comprises a first blocking airbag 341 which is inflated to expand and extend into the channel 335, and a plurality of inflatable flaps 342 which are arranged on the inner side wall of the first blocking airbag 341 and used for inflating and blocking the channel 335, wherein the inflatable flaps 342 are uniformly arranged along the circumferential direction of the inner side wall of the first blocking airbag 341, the inflatable flaps 342 are respectively abutted against the adjacent inflatable flaps 342 and block the channel 335 in the inflating process of the first blocking airbag 341, the inflatable flaps 342 are abutted against the adjacent inflatable flaps 342 to form a cut 3421 for a surgical instrument to pass through, when the surgical instrument is pulled out from the cut 3421, the intra-abdominal pressure can restore the inflatable flaps 342 and block the channel 335, the inflatable flaps 342 and the first blocking airbag 341 are designed as an embodiment of the inner inflatable part 34, firstly, the first blocking airbag 341 is filled and inflated to enable the inflatable flaps 342 to firstly expand to fully block the channel 335, and the tightness of the cut 3421 of the inflatable flaps 342 is controlled by controlling the expansion degree of the first blocking airbag 341, and set into soft material with the flap 342 and can fully butt when butt with surgical instruments butt for hard material, guarantee that the gas in the abdominal cavity can't spill over, guarantee sealed effect is enough good, when surgical instruments inserts, surgical instruments can follow passageway 335 and inwards insert and push up incision 3421 and insert to the abdominal cavity, when surgical instruments extracts, can restore the reduction with the flap 342 of inflating along the area when the gas outwards spills over in the abdominal cavity makes incision 3421 closed, thereby block off passageway 335 again, prevent that gas from leaking too much, the design is easy operation not only, and has good leakproofness.

The inner inflating part 34 includes a second blocking airbag 343 which is inflated to expand and extend into the channel 335, and a blocking ring bag which is arranged on the inner side wall of the second blocking airbag 343 and is used for inflating the blocking channel 335, the blocking ring bag is arranged in a ring structure, the blocking ring bag expands and extends inwards to the blocking channel 335 in the inflating process of the second blocking airbag 343, and a plurality of blocking bags 344 are arranged along the axial direction of the second blocking airbag 343. The second blocking air bag 343 and the blocking ring bag 344 are another embodiment of the inner inflating portion 34, and the second blocking air bag 343 is first filled and inflated to enable the blocking ring bag 344 to block the channel 335, so as to ensure that gas in the abdominal cavity cannot escape, and through the design of the plurality of blocking ring bags 344, when a surgical instrument is inserted into the abdominal cavity through the channel 335, multiple sealing can be performed on the wall of the surgical instrument, thereby ensuring good sealing performance.

The inside wall of outer gas filled portion 33 and the outside wall of interior gas filled portion 34 are made by medical plastic material, the outside wall of outer gas filled portion 33 and the inside wall of interior gas filled portion 34 are made by medical rubber material, this design can be when aerifing outer gas filled portion 33 and interior gas filled portion 34, ensure that outer gas filled portion 33 is outside inflation and stretches out, interior gas filled portion 34 is inside inflation and stretches out, the possible emergence of stretching out toward the other side direction inflation of outer gas filled portion 33 and interior gas filled portion 34 has been avoided, the emergence of conflict has been avoided stretching out each other, and guarantee to have certain hardness at puncture gasbag 3 axial direction, make things convenient for puncture gasbag 3 to be held between puncture core 1 and puncture shell 2, after puncture shell 2 takes out, can ensure that puncture gasbag 3 can run through the upper and lower both sides of patient's stomach wall 4.

The inner cavity of the outer inflatable part 33 is divided into a lower inflatable part 333 close to the inside of the body and an upper inflatable part 334 close to the outside of the body by a separating film 332, a plurality of vent holes 3321 are arranged on the separating film 332, one end of the air outlet of the second inflatable tube 322 is inserted into the inner cavity of the lower inflatable part 333, the lower inflatable part 333 firstly expands and abuts against the abdominal wall 4 in the inflating process of the outer inflatable part 33 by the inflating component 32, and the upper inflatable part 334 then expands and abuts against the abdominal wall 4.

The design of the separation film 332 and the vent 3321 divides the inner cavity of the external inflation part 33 into an upper inflation part 334 and a lower inflation part 333, and the inflation filling speed of the second inflation tube 322 for the lower inflation part 333 is larger than the inflation speed of the gas of the lower inflation part 333 entering the upper inflation part 334 through the vent 3321, so that the inflation extension part 331 positioned below the external inflation part 33 firstly expands outwards and extends out and the part of the lower inflation part 333 which is not the inflation extension part 331 also expands outwards and extends outwards gradually, the puncture casing 2 is pulled outwards gradually to separate the puncture casing 2 from the abdominal wall 4 of the patient, only the puncture airbag 3 is left, the extended lower inflation part 333 and the inflation extension part 331 positioned below the external inflation part 33 can abut against part of the abdominal wall 4, thereby avoiding the puncture airbag 3 from falling off and unstable installation, and then the inflation is continued, so that the upper inflation part 334 and the inflation extension part 331 positioned above the external inflation part 33 expand and extend out to abut against the abdominal wall 4, and the affected part abdominal wall 4 is clamped by the upper and lower inflation extension parts 331, completing fixation.

Puncture gasbag 3 is provided with a plurality of crease 35 that can make puncture gasbag 3 accomodate inwards along its circumference, the design of this crease 35 can make puncture gasbag 3 accomodate inwards along this crease 35, thereby the external diameter size has been reduced, make puncture gasbag 3 can place in puncture shell 2, then when aerifing puncture gasbag 3, the part of accomodating will expand outward and stretch out until with the sealed butt of affected part stomach wall 4, puncture gasbag 3 self needs certain hardness in addition, can make things convenient for puncture core 1 and puncture shell 2 to play the clamping action to it, otherwise when puncture gasbag 3 is like aerifing the swimming circle, when being in the uninflated state, can make the outside drop, influence the puncture effect of puncture core 1, and inconvenient quilt puncture shell 2 and puncture core 1 play the clamping action to it.

The outer side wall of the puncture shell 2 is marked with scales representing the position of the puncture air bag 3, the design of the scales can facilitate an operator to know the position of the puncture air bag 3 through observing the puncture shell 2, and therefore the puncture air bag 3 can be conveniently sent to a proper position through pushing the puncture shell 2.

The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.

Claims

1. The utility model provides a puncture ware for laparoscopic surgery, including be used for doing puncture core (1) of cutting effect to patient's skin and be used for parcel puncture core (1) and puncture shell (2) with patient's stomach wall (4) laminating, puncture shell (2) are hollow tubular structure setting, characterized by: the puncture air bag comprises a puncture air bag (3) capable of controlling expansion and arranged between a puncture shell (2) and a puncture core (1), wherein the puncture air bag (3) comprises an inflatable cavity (31) formed by surrounding flexible materials, an inflatable component (32) capable of inflating and filling the inflatable cavity (31) is arranged on the puncture air bag (3), the puncture air bag (3) comprises an outer inflatable part (33) which can be expanded and fixed on the abdominal wall (4) of a patient and the outer wall of which can be in sealing butt joint with the abdominal wall (4) of the patient, and an inner inflatable part (34) which is arranged on the inner wall of the outer inflatable part (33) and is used for being in sealing butt joint with surgical instruments with different diameters, the outer inflatable part (33) is arranged in a hollow cylindrical structure, a channel (335) for the surgical instruments to pass through is arranged in the outer inflatable part (33), and the outer inflatable part (33) is expanded and extended outwards until the outer inflatable part is in a sealing butt joint with the abdominal wall (4) of the patient in the inflation process, The inner inflating part (34) is gradually inflated and expanded until the channel (335) is blocked, the two ends of the outer inflating part (33) are provided with inflating extending parts (331) used for inflating and expanding to clamp the upper end and the lower end of the abdominal wall (4), and the outer inflating part (33) is arranged in an I-shaped structure.

2. The puncture instrument for laparoscopic surgery according to claim 1, wherein: the outer inflating part (33) and the inner inflating part (34) are integrally arranged, the inflating part (32) comprises a first inflating pipe (321) communicated with the inflating cavity (31) and a first inflator for inflating the inflating cavity (31) through the first inflating pipe (321), and the outer inflating part (33) and the inner inflating part (34) are expanded and extend out simultaneously until the outer inflating part and the inner inflating part are in sealing abutment with the abdominal wall (4) of the patient and a surgical instrument in the inflating process of the puncture air bag (3) by the inflating part (32).

3. The puncture instrument for laparoscopic surgery according to claim 1, wherein: the outer inflation part (33) and the inner inflation part (34) are arranged separately, the outer side wall of the inner inflation part (34) is fixedly connected with the inner side wall of the outer inflation part (33), the inflation part (32) comprises a second inflation tube (322) and a third inflation tube (323) which are respectively communicated with the inner cavity of the outer inflation part (33) and the inner cavity of the inner inflation part (34), a second inflator which inflates the inner cavity of the outer inflation part (33) through the second inflation tube (322), and a third inflator which inflates the inner cavity of the inner inflation part (34) through the third inflation tube (323).

4. The puncture instrument for laparoscopic surgery according to claim 1, wherein: the inner inflating part (34) comprises a first plugging air bag (341) which is inflated to expand and extend into the channel (335) and a plurality of inflating valves (342) which are arranged on the inner side wall of the first plugging air bag (341) and used for inflating and plugging the channel (335), the inflating valves (342) are uniformly arranged along the circumferential direction of the inner side wall of the first plugging air bag (341), the inflating valves (342) are respectively abutted against the adjacent inflating valves (342) and plug the channel (335) in the inflating process of the first plugging air bag (341), the inflating valves (342) are abutted against the adjacent inflating valves (342) to form a cut (3421) for the surgical instrument to pass through, and when the surgical instrument is pulled out from the cut (3421), the abdominal cavity pressure can restore the inflating valves (342) and plug the channel (335).

5. The puncture instrument for laparoscopic surgery according to claim 1, wherein: the inner inflating part (34) comprises a second blocking air bag (343) which is inflated to expand and extend into the channel (335) and blocking ring bags (344) which are arranged on the inner side wall of the second blocking air bag (343) and used for inflating and blocking the channel (335), the blocking ring bags (344) are arranged in an annular structure, the blocking ring bags (344) expand and extend inwards to the blocking channel (335) in the inflating process of the second blocking air bag (343), and the blocking bags (344) are axially arranged along the second blocking air bag (343).

6. The puncture instrument for laparoscopic surgery according to claim 3, wherein: the inner side wall of the outer inflating part (33) and the outer side wall of the inner inflating part (34) are both made of medical plastic materials, and the outer side wall of the outer inflating part (33) and the inner side wall of the inner inflating part (34) are both made of medical rubber materials.

7. The puncture instrument for laparoscopic surgery according to claim 3, wherein: the inner cavity of the outer inflating part (33) is divided into a lower inflating part (333) close to the inside of the body and an upper inflating part (334) close to the outside of the body through a separating film (332), a plurality of vent holes (3321) are formed in the separating film (332), one end of the air outlet of the second inflating tube (322) is inserted into the inner cavity of the lower inflating part (333), the lower inflating part (333) is firstly in expansion abutting joint with the abdominal wall (4) in the inflating process of the outer inflating part (33) through an inflating part (32), and the upper inflating part (334) is then in expansion abutting joint with the abdominal wall (4).

8. The puncture instrument for laparoscopic surgery according to claim 1, wherein: the puncture air bag (3) is provided with a plurality of folds (35) which can enable the puncture air bag (3) to be accommodated inwards along the circumferential direction of the puncture air bag.

9. The puncture instrument for laparoscopic surgery according to claim 1, wherein: scales representing the position of the puncture air bag (3) are marked on the outer side wall of the puncture shell (2).