CN111134741B

CN111134741B - Thoracoscope withdrawing device

Info

Publication number: CN111134741B
Application number: CN202010025686.5A
Authority: CN
Inventors: 周海榆; 朱鸿远; 曾繁俊
Original assignee: Guangdong General Hospital Guangdong Academy of Medical Sciences
Current assignee: Guangdong General Hospital Guangdong Academy of Medical Sciences
Priority date: 2020-01-10
Filing date: 2020-01-10
Publication date: 2021-06-22
Anticipated expiration: 2040-01-10
Also published as: CN111134741A

Abstract

A thoracoscope taking-out device comprises an outer sheath rod, an inner sheath rod, an elastic wire ring and a specimen collecting bag, wherein a through hole is formed in the inner part of the outer sheath rod, and a fastening end is arranged at a first end of the outer sheath rod; further, the doctor switches on air feed portion and the end of admitting air through the pipe, and air feed portion injects gas to the end of admitting air, and gaseous transmission to the gas vent and enter into the film strip along the air-vent line makes the film strip resume to the second state by first state gradually to the part that collects the bag folding with the sample is fully supported and is opened, can carry out tissue organ cover in the patient body and get the work.

Description

Thoracoscope withdrawing device

Technical Field

The invention relates to the technical field of medical equipment, in particular to a thoracoscope taking-out device.

Background

In the process of performing thoracoscopic surgery, the excised tissue and organ specimen needs to be taken out of the body of a patient through a taking-out device, and a utility model with application number 200920086638.6 provides an endoscopic surgery taking-out device, wherein a specimen collecting bag of the taking-out device is integrally contracted in an outer sheath rod before use, and after the taking-out device is stretched into the body of the patient, the specimen collecting bag is controlled to stretch out through the inner sheath rod so as to sleeve and take the tissue and organ specimen; however, in the actual use process, the material of the specimen collecting bag is too soft, and after the opening of the bag opening, the bag body part is still in a folding and closing state, so that the specimen is difficult to take and the operation time is prolonged; simultaneously, because bag body part is closed, lead to the storage space of sack body to diminish, the tissue and the organ of excision in taking out the in-process sample bag fall out from the sack easily, and the doctor need drag for again, reduces the success rate of operation.

Disclosure of Invention

Technical problem to be solved

In order to solve the problems, the invention provides a thoracoscope taking-out device which can expand a folded and closed part of a specimen collecting bag in a patient body, avoid series problems caused by the partial closure of the specimen collecting bag and improve the success rate of operations.

(II) technical scheme

In order to achieve the purpose, the invention provides the following technical scheme:

a thoracoscope taking-out device comprises an outer sheath rod, an inner sheath rod, an elastic wire ring, a specimen collecting bag, a film strip and an air supply part, wherein a through hole penetrating through two ends is formed in the outer sheath rod, and a fastening end is arranged at the first end of the outer sheath rod; the inner sheath rod penetrates through the fastening end head and is rotatably installed in the through hole and can slide along the length direction of the through hole, a vent pipeline is arranged inside the inner sheath rod, and the first end and the second end of the inner sheath rod are respectively provided with an air inlet end head and an air outlet communicated with the vent pipeline; the elastic wire ring is arranged at the second end of the inner sheath rod, and the elastic wire ring has a first shape contracted in the through hole and a second shape arranged outside the through hole and in an expanded shape; the bag opening of the specimen collecting bag is retractably arranged on the elastic coil; the film strip is spirally designed on the inner side wall of the sample collecting bag in a surrounding manner, and forms an inflation pipeline with the inner side wall of the sample collecting bag body in a surrounding manner, one end of the inflation pipeline is an inflation end, the other end of the inflation pipeline is a blind end, and the film strip has a first state of being shrivelled and attached to the inner wall of the sample collecting bag and a second state of ventilation and expansion; the inflatable end of the inflatable pipeline close to the opening of the specimen collecting bag is communicated with the exhaust port; the air supply part is communicated with the air inlet end head through a guide pipe; the air supply part is an air bag, an accommodating cavity is arranged in the fastening end, an air source head communicated with the accommodating cavity is arranged on the side wall of the fastening end, and the air source head is communicated with the air inlet end through a guide pipe; the air bag is arranged in the accommodating cavity, and an air source port of the air bag is communicated with the air source head; hold the movably presser that is equipped with of intracavity, hold the chamber opening part and be equipped with detachable lid spare, be equipped with the boss on the interior sheath pole body of rod, interior sheath pole runs through in proper order after lid spare and the presser, boss on its body of rod can offset with the presser to with the presser along holding chamber length direction promotion, and then make the presser extrude the gasbag, and extrude the gaseous gas in the gasbag to the air supply head, finally make gaseous along the pipe flow to the end department of admitting air.

Preferably, a retaining ring is arranged on the fastening end, and a pull ring is arranged at the first end of the inner sheath rod; and the retaining ring and the pull ring are both provided with anti-skid grains.

Preferably, a two-way valve is fixedly arranged at the opening of the specimen collecting bag, and the two-way valve is communicated with the exhaust port and the inflation end of the inflation pipeline.

Preferably, the cover assembly is provided with a pressure regulating hole for maintaining the air pressure in the accommodating cavity.

Preferably, the elastic pressing piece is further provided with a return spring, one end of the return spring is fixed to one side, close to the accommodating cavity, of the elastic pressing piece, and the other end of the return spring abuts against the bottom of the accommodating cavity.

Preferably, the gasbag is elastic rubber material, and the gasbag is cyclic annular design, and has the passageway in its middle, the interior sheath pole body of rod runs through the passageway design in the middle of the gasbag.

Preferably, the film strip and the specimen collection bag are made of the same material and are made of polyurethane film materials through heat sealing.

(III) advantageous effects

When the thoracoscope taking-out device is used, a doctor holds the fastening end by hand, after the second end of the outer sheath rod extends into the body of a patient, the inner sheath rod is pushed to move along the length direction of the through hole, so that the second end of the inner sheath rod extends out of the through hole opening of the second end of the outer sheath rod, in the process, the elastic wire ring is gradually separated from the through hole and gradually changed from the first shape to the second shape, and then one end of the specimen collecting bag connected with the elastic wire ring is supported to form an opening, and at the moment, the part of the specimen collecting bag is still in a folded state; meanwhile, a doctor connects the gas supply part and the gas inlet end head through a conduit, the gas supply part injects gas into the gas inlet end head, the gas is transmitted to the exhaust port along the ventilation pipeline and enters the film strip, so that the film strip is gradually restored to the second state from the first state, the folded part of the specimen collecting bag is completely supported, and the tissue and organ specimen collecting work can be carried out in the body of a patient; therefore, the thoracoscope taking-out device can expand the folded and closed part of the specimen collecting bag in the body of a patient, avoid series problems caused by the partial closure of the specimen collecting bag and improve the success rate of the operation.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention without limiting the invention in which:

FIG. 1 shows a schematic view of the invention in a state before use;

FIG. 2 shows a first overall structure of the present invention;

FIG. 3 shows an enlarged view at A in FIG. 2;

FIG. 4 shows an enlarged view at B in FIG. 2;

FIG. 5 shows a cross-sectional view of FIG. 4;

FIG. 6 shows a cross-sectional view of a portion of the structure of the present invention;

FIG. 7 shows the overall structure of the present invention, diagram two;

FIG. 8 shows an exploded view of the overall structure of the present invention;

fig. 9 shows an exploded view of a part of the structure of the present invention.

In the figure: the device comprises an outer sheath rod 1, a through hole 10, a fastening end 11, a containing cavity 110, a gas source head 110a, a retaining ring 111, an inner sheath rod 2, a vent pipe 20, a gas inlet end 201, a gas outlet 202, a pull ring 21, a boss 2A, an elastic wire ring 3, a specimen collecting bag 4, a two-way valve 41, a film strip 5, a gas supply part 6, an air bag 61, a T elastic part, a T1 return spring, a G cover part and a G1 pressure regulating hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in 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 the attached drawings 1-9, a thoracoscope taking-out device comprises an outer sheath rod 1, an inner sheath rod 2, an elastic wire ring 3, a specimen collecting bag 4, a film strip 5 and an air supply part 6, wherein a through hole 10 penetrating through two ends is formed in the outer sheath rod, and a fastening end 11 is arranged at the first end of the outer sheath rod 1; the inner sheath rod 2 penetrates through the fastening end 11 and then is rotatably installed in the through hole 10 and can slide along the length direction of the through hole 10, the ventilation pipeline 20 is arranged inside the inner sheath rod 2, and the first end and the second end of the inner sheath rod 2 are respectively provided with an air inlet end 201 and an air outlet 202 communicated with the ventilation pipeline 20; the elastic wire loop 3 is arranged at the second end of the inner sheath rod 2, and the elastic wire loop 3 has a first shape contracted in the through hole 10 and a second shape arranged outside the through hole 10 and in an expanded shape; the opening of the specimen collecting bag 4 is retractably arranged on the elastic wire ring 3; the film strip 5 is spirally designed on the inner side wall of the sample collecting bag 4 in a surrounding manner, and forms an inflation pipeline with the inner side wall of the sample collecting bag 4, one end of the inflation pipeline is an inflation end, the other end of the inflation pipeline is a blind end, and the inflation pipeline has a first state of being shrivelled and attached to the inner wall of the sample collecting bag 4 and a second state of being ventilated and expanded; the inflation end of the inflation pipeline close to the opening of the specimen collection bag 4 is communicated with the exhaust port 202; the air supply part 6 is communicated with the air inlet end head 201 through a conduit.

Specifically, when the thoracoscope taking-out device is produced, the elastic wire ring 3 and the inner sheath rod 2 are designed into a whole, the specimen collecting bag 4 is folded on the elastic wire ring 3 and is positioned in the through hole 10 of the outer sheath rod 1 together with the elastic wire ring 3, namely, the elastic wire ring 3 is in a first shape, and the film strip 5 is in a first state of being shriveled and attached to the inner wall of the specimen collecting bag 4;

in summary, when the fastening end 11 is used, a doctor holds the fastening end 11, and after the second end of the outer sheath rod 1 is inserted into the patient, the inner sheath rod 2 is pushed to move along the length direction of the through hole 10, so that the second end of the inner sheath rod 2 is inserted from the through hole 10 of the second end of the outer sheath rod 1, in the process, the elastic wire loop 3 is gradually separated from the through hole 10, the first shape is gradually changed into the second shape, and the end of the specimen collecting bag 4 connected with the elastic wire loop 3 is supported to form an opening, and at this time, the specimen collecting bag 4 is still in a folded state;

meanwhile, the doctor connects the gas supply part 6 and the gas inlet end 201 through the catheter, the gas supply part 6 injects gas into the gas inlet end 201, the gas is transmitted to the exhaust port 202 along the ventilation pipeline 20 and enters the thin film strip 5, the thin film strip 5 is gradually changed from the first state to the second state, the folded part of the sample collection bag 4 is completely supported, and therefore tissue and organ sample collecting work can be carried out in the body of the patient.

After the sleeving is finished, pulling out a connecting conduit between the air supply part 6 and the air inlet end 201, pulling the inner sheath rod 2, and enabling the inner sheath rod 2 to move along the length direction of the outer sheath rod so as to gradually retract the elastic wire ring 3 into the through hole 10, wherein as the opening of the specimen collection bag 4 is retractably arranged on the elastic wire ring, when the elastic wire ring 3 gradually retracts into the through hole 10, the opening of the specimen collection bag 4 is tightened, and then the opening of the specimen collection bag 4 is closed; the doctor can remove the specimen collection bag 4 from the patient. In the process, the gas in the membrane strip 5 gradually flows along the vent pipe 20 along with the contraction of the specimen collection bag 4, and is finally exhausted from the outside through the gas inlet end 201. Therefore, the thoracoscope extractor can expand the folded and closed part of the specimen collecting bag 4 in the body of a patient, avoid series problems caused by the closing of the part of the specimen collecting bag 4 and improve the success rate of the operation.

On the other hand, in the operation process, the design of the film strip 5 can not only expand the folded and closed part of the specimen collecting bag 4, but also maintain the expansion state of the specimen collecting bag 4 all the time, so that a doctor can easily collect the internal tissue and organ of a patient, and the film strip 5 is inflated and expanded to have certain buffering performance, so that the collision between the organ in the specimen collecting bag 4 and the organ outside the bag can be reduced, and the operation risk is reduced. Similarly, if the doctor needs to change the expansion state of the specimen collection bag 4 in the patient, the doctor only needs to connect the gas inlet end 201 with the gas pumping device to pump out the gas in the film strip 5.

Referring to fig. 1-6, the fastening end 11 is provided with a retaining ring 111, and the first end of the inner sheath rod 2 is provided with a pull ring 21; the retaining ring 111 and the pull ring 21 are both provided with anti-skid grains; when the anti-skidding pull ring is used, a user can buckle the buckle ring 111 with one hand and buckle the pull ring 21 with the other hand, the inner sheath rod 2 can be driven to slide along the length direction of the through hole 10 by pushing the pull ring 21, the friction force between the buckle ring 111 and the pull ring 21 and fingers of the user can be increased by the design of the anti-skidding threads, and the fingers are prevented from skidding.

Referring to fig. 3, a two-way valve 41 is fixedly arranged at the opening of the specimen collection bag 4, and the two-way valve 41 is connected with the exhaust port 202 and the inflation end of the inflation pipeline;

specifically, in the using process, the inflating end of the inflating pipeline is communicated with the exhaust port 202 through the hose, but the inflating pipeline is formed by attaching the film strip 5 to the inner wall of the specimen collecting bag 4 in a surrounding manner, when the opening of the specimen collecting bag 4 is expanded, the hose is easily pulled by the opening of the bag to be separated from the inflating end, so that the smooth transmission of gas is influenced; the fixed setting of two-way valve 41 is at design sample collection bag 4 opening part, and through hose switch-on gas tube's the end of aerifing and gas vent 202, can reduce the hose and receive the power of dragging of sack when 4 sack expansions of sample collection bag, avoids gas tube's the end of aerifing to break away from the hose, guarantees gaseous stable transmission.

Referring to fig. 4-9, the air supply part 6 is an air bag 61, the fastening end 11 is provided with an accommodating cavity 110 therein, the side wall of the fastening end 11 is provided with an air source head 110a communicated with the accommodating cavity 110, and the air source head 110a can be communicated with the air inlet end 201 through a conduit; the air bag 61 is arranged in the accommodating cavity 110, and an air supply port of the air bag is communicated with an air supply head 110 a; the balloon 61 is of annular design and has a channel in its middle;

a pressing part T is movably arranged in the accommodating cavity 110, a detachable covering part G is arranged at the opening of the accommodating cavity, a boss 2A is arranged on the rod body of the inner sheath rod 2, the inner sheath rod 2 penetrates through the covering part G and the pressing part T in sequence, and then the boss 2A on the rod body can abut against the pressing part T so as to push the pressing part T along the length direction of the accommodating cavity 110, so that the pressing part T can extrude the air bag 61 and extrude the gas in the air bag 61 to the gas source head 110a, and finally the gas flows to the gas inlet end 201 along the catheter;

specifically, during production, the air bag is placed in the accommodating cavity 110 and is in a full air state, and the air source head 110a is blocked by the sealing film; when the medical device is used, a doctor firstly penetrates the catheter through the sealing membrane to connect the ventilation source head 110a and the air inlet end 201, pushes the inner sheath rod 2 to move along the length direction of the through hole 10 until the boss 2A on the rod body of the inner sheath rod 2 penetrates the cover piece G to be abutted against the elastic pressing piece T, continuously pushes the inner sheath rod 2 to drive the elastic pressing piece T to extrude the air bag 61, extrudes the gas in the air bag 61 to the air source head 110a, enables the gas to flow to the air inlet end 201 along the catheter, and finally flows to the two-way valve 41 through the ventilation pipeline 20, so that the thin film strip 5 is inflated and expanded. Until the second end of the inner sheath rod 2 completely extends out of the through hole 10, that is, the bag opening of the specimen collection bag 4 is completely supported and opened by the elastic wire loop 3, the gas in the gasbag 61 is completely extruded to the two-way valve 41, and at the moment, the thin film strip 5 is completely inflated and expanded to completely support and open the specimen collection bag 4. In the operation process, if the gas in the film strip 5 needs to be discharged, the gas inlet end 201 is connected with the gas extraction equipment for gas extraction.

On the other hand, as the specimen collecting bag 4 belongs to a disposable article, after the use, the specimen collecting bag needs to be replaced together with the inner sheath rod 2, the cover part G is disassembled, and the inner sheath rod 2 is pulled out from the fastening end head 11; after the new inner sheath rod 2 is replaced, the cover part G is installed, the cover part G is communicated with the air source head 110a through external air supply equipment, the air bag 61 is filled with air again, the air bag 61 is inflated by air, the elastic pressing part T is propped back to the original position, and the replacement is completed.

Referring to fig. 5 to fig. 9, the biasing member T is further provided with a return spring T1, one end of the return spring T1 is fixed to a side of the biasing member T close to the accommodating cavity 110, and the other end abuts against the bottom of the accommodating cavity 110; after the doctor uses the device to sleeve and take out the tissue and organ, the doctor needs to pull the inner sheath rod 2 to tighten the opening of the specimen collecting bag 4, and a return spring T1 is designed on the elastic piece T for the convenience of one-hand operation of the doctor; when the doctor released sample collection bag 4 from through-hole 10 in, reset spring T1 compression energy storage, when the doctor loosened interior sheath pole, reset spring T1 released gradually and can resume initial position to sheath pole 2 removes in the drive, and then in pulling back through-hole 10 with elasticity silk circle 3.

Be equipped with pressure regulating hole G1 on the closure G to be used for maintaining the atmospheric pressure that holds in the chamber 10, make the atmospheric pressure that holds the intracavity unanimous with external, and then make suppressing piece T change the promotion.

Referring to fig. 4 to 6, the airbag 61 is made of elastic rubber and has a certain recovery capability; the balloon 61 is designed in a ring shape and has a channel in the middle, and the inner sheath rod 2 penetrates through the channel in the middle of the balloon 61 so as to facilitate the movement of the inner sheath rod 2.

Referring to the attached drawings 1-6, the film strip 5 and the specimen collection bag 4 are made of the same material and are made of polyurethane film materials through heat sealing; the polyurethane film material is non-toxic and has certain stretch-resistant capability.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the case of not making a reverse description, these directional terms do not indicate and imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the present application; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of protection of the present application is not to be construed as being limited.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a thoracoscope remove device which characterized in that includes:

the sheath rod (1), the sheath rod is internally provided with a through hole (10) penetrating through two ends, and the first end of the sheath rod (1) is provided with a fastening end (11);

the inner sheath rod (2) penetrates through the fastening end (11) and then is rotatably installed in the through hole (10) and can slide along the length direction of the through hole (10), an air duct (20) is arranged inside the inner sheath rod (2), and an air inlet end (201) and an air outlet (202) communicated with the air duct (20) are respectively arranged at the first end and the second end of the inner sheath rod (2);

the elastic wire ring (3) is arranged at the second end of the inner sheath rod (2), and the elastic wire ring (3) has a first shape contracted in the through hole (10) and a second shape arranged outside the through hole (10) and in an expanded shape;

the mouth of the specimen collecting bag (4) is retractably arranged on the elastic wire ring (3);

the film strip (5) is spirally designed on the side wall of the specimen collecting bag (4) in a surrounding manner, and forms an inflation pipeline with the inner side wall of the specimen collecting bag (4), one end of the inflation pipeline is an inflation end, the other end of the inflation pipeline is a blind end, and the film strip (5) has a first state of being shriveled and attached to the inner wall of the specimen collecting bag (4) and a second state of being ventilated and expanded; the inflating end of the inflating pipeline close to the opening of the specimen collecting bag (4) is communicated with the exhaust port (202);

the gas supply part (6), the gas supply part (6) is communicated with the gas inlet end (201) through a conduit; the air supply part (6) is an air bag (61), an accommodating cavity (110) is arranged in the fastening end head (11), an air source head (110a) communicated with the accommodating cavity (110) is arranged on the side wall of the fastening end head (11), and the air source head (110a) is communicated with the air inlet end head (201) through a guide pipe; the air bag (61) is arranged in the accommodating cavity (110), and an air source port of the air bag is communicated with an air source head (110 a); hold movably in chamber (110) and be equipped with suppress piece (T), hold chamber (110) opening part and be equipped with detachable lid and close piece (G), be equipped with boss (2A) on the interior sheath pole (2) body of rod, interior sheath pole (2) run through in proper order and close piece (G) and suppress piece (T) after, boss (2A) on its body of rod can offset with suppress piece (T) to promote along holding chamber (110) length direction suppress piece (T), and then make suppress piece (T) extrusion gasbag (61), and extrude gas in gasbag (61) to air supply head (110a), finally make gas flow to air inlet end (201) department along the pipe.

2. The thoracoscopic extraction device of claim 1, wherein a retaining ring (111) is provided on said fastening end (11), and a pull ring (21) is provided on a first end of said inner sheath rod (2); the retaining ring (111) and the pull ring (21) are both provided with anti-skid grains.

3. The thoracoscopic extraction device as recited in claim 1, wherein a two-way valve (41) is fixedly arranged at the opening of the specimen collection bag (4), and the air outlet (202) and the inflation end of the inflation pipeline are communicated through the two-way valve (41).

4. A thoracoscopic extraction device as recited in claim 1, wherein said cover member (G) is provided with a pressure regulating hole (G1) for maintaining air pressure in the receiving chamber (110).

5. The thoracoscope extraction device according to claim 1, wherein the spring (T) is further provided with a return spring (T1), one end of the return spring (T1) is fixed on one side of the spring (T) close to the accommodating cavity (110), and the other end of the return spring abuts against the bottom of the accommodating cavity (110).

6. A thoracoscopic extraction device according to claim 5, characterized in that said balloon (61) is of elastic rubber material, and said balloon (61) is of annular design with a channel in the middle, said shaft of said inner sheath rod (2) extending through the channel in the middle of the balloon (61).

7. A thoracoscopic extraction device according to claim 1, wherein said membrane strip (5) and said specimen collection bag (4) are of the same material and are made of polyurethane film material by heat sealing.