CN113303887A

CN113303887A - Eccentric puncture outfit

Info

Publication number: CN113303887A
Application number: CN202110618579.8A
Authority: CN
Inventors: 朱健; 沈伟中; 汪学成
Original assignee: Jiangsu Regrown Medical Technology Co ltd
Current assignee: Jiangsu Regrown Medical Technology Co ltd
Priority date: 2021-06-03
Filing date: 2021-06-03
Publication date: 2021-08-27

Abstract

The invention provides an eccentric puncture outfit which comprises a first sleeve and a second sleeve, wherein the first sleeve is sleeved in the second sleeve, an air inlet channel is formed in the first sleeve, and a smoke exhaust channel is formed between the first sleeve and the second sleeve; first sleeve includes first tube head and the first pipe shaft of intercommunication each other, the second sleeve includes second tube head and the second pipe shaft of intercommunication each other, first tube head is located inside the second tube head, first pipe shaft is located inside the second pipe shaft, and first pipe shaft is skew the center of first tube head, the second pipe shaft is skew the center of second tube head utilizes inlet channel and smoke evacuation passageway realize the independent operation of gas injection and smoke evacuation, adopts eccentric structure in addition, can play good operation effect in operation space or the restricted operation scene of operating range, satisfies the operation demand of various angles.

Description

Eccentric puncture outfit

Technical Field

The invention relates to the field of medical instruments, in particular to an eccentric puncture outfit.

Background

The traditional puncture outfit generally comprises a sleeve component and a puncture outfit needle core, wherein the tip of the puncture outfit is pushed to penetrate through the skin by applying pressure to the puncture outfit until the puncture outfit enters a body cavity, the puncture outfit needle core is extracted, and the sleeve component can be used as a minimally invasive instrument channel for performing endoscopic surgery and endoscopic examination operations so as to introduce various instruments and tools into the body cavity.

Electrotome in the puncture ware is when burning or electricity congeals human tissue, can produce a large amount of smog and steam, on the one hand, the smog that this kind of organic matter burning produced is a strong carcinogen, if smog directly discharges to indoor, can cause unnecessary injury to the medical personnel in operator's and the operating room, on the other hand, when carrying out human deep operation, especially when important organs such as deep blood vessel of fulgerizing, smog can make the electron microscope fuzzy, the same dry and cold gas that gets into the abdominal cavity and the inside humid environment contact of human produce the phenomenon of fogging, also can make the camera lens fuzzy, influence medical personnel's sight, hinder the normal clear progress of operation, cause the operation blind or busy even, consequently, need smoke abatement to guarantee going on smoothly of operation. The existing smoke exhausting operation needs to suspend the operation, and the smoke is sucked or directly exhausted into the space of an operating room through third-party equipment. In addition, in order to enlarge the space of the body cavity and increase the distance between the tissues, it is necessary to inject gas into the body cavity. Further, the conventional puncture device includes a tube head and a tube body, the tube body is inserted into a body cavity, and the tube head is exposed outside the body cavity so that a medical worker can operate and introduce instruments and the like. In some operation types, the operation angle of the puncture outfit needs to be operated to be close to the surface of the human body, but the tube head of the existing puncture outfit is larger, the operation angle is limited in the operation space, and the operation implementation is seriously influenced. In view of the above, there is a need for a puncture outfit that can inject and exhaust gas and meet the requirements of various operation angles.

Disclosure of Invention

In order to solve the problems, the invention provides an eccentric puncture outfit which can realize independent gas injection and smoke exhaust and effectively increase the operation angle, and a plurality of gas-introducing parts are arranged on the inner wall of an inner sleeve at intervals and used for guiding gas and enabling the gas to be attached to or sprayed parallel to the surface of an endoscope, so that the effect of forming a stable protective barrier around a lens is achieved, and the lens is prevented from being fogged to influence the operation visual field.

An eccentric puncture outfit, comprising a first sleeve and a second sleeve, wherein the first sleeve is sleeved in the second sleeve, an air inlet channel is formed in the first sleeve, and a smoke exhaust channel is formed between the first sleeve and the second sleeve; first cover pipe is including the first tube head and the first pipe shaft of intercommunication each other, the second cover pipe is including the second tube head and the second pipe shaft of intercommunication each other, first tube head is located inside the second tube head, first pipe shaft is located inside the second pipe shaft, and first pipe shaft is skew the center of first tube head, the second pipe shaft is skew the center of second tube head.

As the preferred technical scheme, still include two sealing washers, the sealing washer cup joint in first tube head with between the second tube head, inlet port and exhaust hole have been seted up on the second tube head, the exhaust hole is located two the lower part of sealing washer, and with the flue gas channel intercommunication of discharging fume, first through-hole has been seted up on the first tube head, the inlet port with first through-hole all is located two between the sealing washer.

As a preferable technical scheme, the device further comprises a first sealing assembly and a second sealing assembly for the sealing and passing of instruments, wherein the first sealing assembly is fixed on the first pipe head, and the second sealing assembly is fixed on the second pipe head and is positioned on one side of the first sealing assembly, which is far away from the first pipe body.

As a preferred technical solution, the first sealing assembly includes a first sealing valve and a first fixing member, and the first sealing valve abuts against an end portion of the first tube head away from the first tube body and is fixed by the first fixing member.

Preferably, the seal assembly further comprises a valve seat connected between the second cartridge and the second seal assembly.

As a preferred technical solution, the second sealing assembly includes a second sealing valve and a second fixing member, the second sealing valve is fixed on the valve seat through the second fixing member, and the second sealing valve is opposite to the first pipe body.

As preferred technical scheme, the disk seat includes the valve body, the both ends of valve body are provided with spiro union portion and joint portion respectively, spiro union portion with second tube head spiro union, joint portion with second mounting joint.

As a preferred technical scheme, the pipe joint further comprises a cover plate, wherein the cover plate is fixed on one side of the second fixing piece, which deviates from the valve seat, and a cover plate through hole which is opposite to the first pipe body is formed in the cover plate.

Preferably, a plurality of air-entraining parts are arranged on the inner wall of the first pipe body at intervals and used for guiding air and enabling the air to be attached to or sprayed parallel to the surface of the cavity mirror.

According to the preferable technical scheme, a first connecting pipe and a second connecting pipe are arranged on the outer wall of the second pipe head, the second connecting pipe is located outside the first connecting pipe, the smoke exhaust hole is located in the first connecting pipe, and the air inlet hole is located between the first connecting pipe and the second connecting pipe.

As the preferred technical scheme, a plurality of smoke inlet holes are formed in one end, deviating from the second pipe head, of the second pipe body, and the smoke inlet holes are in a long hole shape and communicated with the smoke exhaust channel.

The device also comprises a pressure measurement and gas injection unit which is used for injecting gas, exhausting smoke and measuring pressure to the body cavity.

Compared with the prior art, the technical scheme has the following advantages:

the first tube body and the second tube body enter a body cavity, and gas is injected into the body cavity through the gas inlet channel, so that the space of the body cavity is enlarged to increase the distance between tissues, and the operation is facilitated. Still carry out through the exhaust fume channel, the operation implementation time extension that avoids flue gas to the lens pollution to cause in the operation process and can't in time handle the emergence of the crisis (such as heavy hemorrhage) condition is avoided. Simultaneously, first shaft of pipe inner wall interval is equipped with a plurality of bleed portions, makes gas flow in order to utilize bleed portion guide gas and make gas can laminate or be on a parallel with the chamber mirror surface and spray, reach and form stable protection barrier effect around the camera lens, and then the protection camera lens does not receive the invasion of smog. Moreover inlet channel with smoke exhaust channel independently sets up, and both mutual noninterference effectively promote the security, in addition, the puncture ware is eccentric structure, can play good operation effect in operation space or the limited operation scene of operating range, satisfies the operation demand of various angles, and then effectively promotes the suitability.

The invention is further described with reference to the following figures and examples.

Drawings

FIG. 1 is a schematic structural view of an eccentric puncture outfit according to the present invention;

FIG. 2 is a front view of the eccentric puncturer of the present invention;

FIG. 3 is a left side view of the eccentric puncturer of the present invention;

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;

FIG. 5 is an exploded view of the first seal assembly of the present invention;

FIG. 6 is an exploded view of a second seal assembly according to the present invention;

FIG. 7 is a schematic structural view of a second sleeve according to the present invention;

FIG. 8 is a schematic structural view of a first bushing according to the present invention;

fig. 9 is a schematic structural view of the pressure and gas injection unit according to the present invention.

In the figure: 100 a first sleeve, 110 a first sleeve, 111 a first through hole, 112 a first plug part, 114 a sleeve clamping groove, 120 a first pipe body, 121 an air-entraining part, 200 a second sleeve, 210 a second sleeve, 211 an air-intake hole, 212 a smoke-exhausting hole, 213 a first connecting pipe, 214 a second connecting pipe, 220 a second pipe body, 221 an anti-slip ring, 222 a smoke-intake hole, 300 a sealing ring, 400 a first sealing component, 410 a first sealing valve, 411 a first valve part, 412 a first connecting part, 4121 a connecting jack, 420 a first fixing part, 421 a fixing jack, 500 a second sealing component, 510 a second sealing valve, 511 a through hole, 520 a second fixing part, 600 a valve seat, 610 a valve body, 611 a screwed part, 612 a clamping part, 620 a blocking part, 621 a second through hole, 700 a cover plate, 710 a through hole, 1001 an air-intake channel, and 1002 a smoke-exhausting channel.

Detailed Description

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the invention.

As shown in fig. 1 to 4, the eccentric puncture outfit comprises a first sleeve 100 and a second sleeve 200, wherein the first sleeve 100 is sleeved in the second sleeve 200, an air inlet channel 1001 is formed in the first sleeve 100, and a smoke exhaust channel 1002 is formed between the first sleeve 100 and the second sleeve 200;

first sleeve 100 includes first tube head 110 and first pipe shaft 120 of intercommunication each other, second sleeve 200 includes second tube head 210 and second pipe shaft 220 of intercommunication each other, first tube head 110 is located inside second tube head 210, first pipe shaft 120 is located inside second pipe shaft 220, and first pipe shaft 120 deviates first tube head 110's center, second pipe shaft 220 deviates second tube head 210's center.

The first tube body 120 and the second tube body 220 enter a body cavity, and gas is injected into the body cavity through the gas inlet channel 1001, so that the space of the body cavity is enlarged to increase the distance between tissues, and thus, the operation is facilitated. Smoke is discharged through the smoke discharging channel 1002, so that the influence of smoke on the use of the lens is avoided, and the smoke is prevented from being directly discharged indoors to infect medical workers. Moreover inlet channel 1001 with smoke exhausting channel 1002 sets up independently, and both mutual noninterference effectively promote the security, in addition, the puncture ware is eccentric structure, can play good operation effect in operation space or the limited operation scene of operating range, satisfies the operation demand of various angles, and then effectively promotes the suitability.

As shown in fig. 4, the first pipe head 110 and the first pipe body 120 are integrally formed, and the size of the first pipe head 110 is larger than that of the first pipe body 120, for example, the first pipe head 110 and the first pipe body 120 are both circular, and the diameter of the first pipe head 110 is larger than that of the first pipe body 120. Wherein the first pipe body 120 is elongated to allow gas to pass through the intake passage 1001 and achieve an injection effect. Likewise, the second cartridge 210 has a size larger than that of the second shaft 220, and the second shaft 220 has an elongated shape.

As shown in fig. 2 and 4, the first pipe body 120 is located near the edge of the first pipe head 110, for example, the distance between the first pipe body 120 and the first pipe head 110 is equal to one fourth of the diameter of the first pipe head 110, so that the first pipe body 120 is adjacent to the edge of the first pipe head 110, thereby realizing an eccentric structure. Meanwhile, the second pipe body 220 is located at the edge of the second pipe head 210. Further, the first pipe body 120 is disposed at the right side edge of the first pipe head 110, and the second pipe body 220 is disposed at the right side edge of the second pipe head 210, so that the operation angle of the puncture outfit at the right side is effectively increased, and the operation angle and applicability of the puncture outfit are improved.

As shown in fig. 4, the eccentric puncture outfit further comprises two sealing rings 300, the sealing rings 300 are sleeved on the first pipe head 110 and between the second pipe head 210, the second pipe head 210 is provided with an air inlet 211 and a smoke exhaust hole 212, the smoke exhaust hole 212 is located at two lower parts of the sealing rings 300 and communicated with the smoke exhaust channel 1002, the first pipe head 110 is provided with a first through hole 111, and the air inlet 211 and the first through hole 111 are both located between the sealing rings 300.

Since the two sealing rings 300 are sleeved between the first pipe head 110 and the second pipe head 210, a sealing area is formed between the two sealing rings 330, and the air inlet hole 211 and the first through hole 111 are both communicated with the sealing area, so that air can enter the sealing area through the air inlet hole 211, and then enter the air inlet channel 1001 through the first through hole 111 and inject air into the body cavity. Smoke formed in the body cavity is exhausted through the smoke evacuation passageway 1002 and the smoke evacuation holes 212. Since the smoke discharge hole 212 is located at the lower portion of the two sealing rings 300, the air inlet passage 1001 and the smoke discharge passage 1002 are independently opened.

Specifically, referring to fig. 4 and 5, two tube head clamping grooves 114 are formed in the outer wall of the first tube head 110 for fixing the sealing ring 300, the first through hole 111 is located between the two tube head clamping grooves 114, the number of the first through holes 111 may be multiple, and the number is not limited herein.

As shown in fig. 1 to 4, a first connection pipe 213 and a second connection pipe 214 are disposed on an outer wall of the second tube head 210, the second connection pipe 214 is located outside the first connection pipe 213, the smoke discharge hole 212 is located in the first connection pipe 213, the air inlet hole 211 is located between the first connection pipe 213 and the second connection pipe 214, the first connection pipe 213 and the second connection pipe 214 are disposed to separate the air inlet hole 211 from the smoke discharge hole 212, and an external pipe is connected to implement independent operation of air intake and smoke discharge.

Preferably, the first connection pipe 213 and the second connection pipe 214 are coaxially disposed and located at a side of the second tube head 210 far from the second tube body 220, so as to avoid an external pipe or the like from limiting an operation angle of the puncture instrument.

As shown in fig. 7, a plurality of smoke inlet holes 222 are formed in one end of the second pipe body 220 facing away from the second pipe head 210, and the smoke inlet holes 222 are communicated with the smoke evacuation channel 1002, so that smoke in the body cavity enters the smoke evacuation channel 1002 through the smoke inlet holes 222 and is evacuated through the smoke evacuation hole 212.

Specifically, the end of the second pipe body 220 away from the second pipe head 210 is conical, and a plurality of smoke inlet holes 222 are formed in the second pipe body 220 at intervals, and are inclined to prevent the smoke inlet holes 222 from being blocked by tissues and the like during smoke evacuation, so that the use effect is affected.

As shown in fig. 4 to 6, the eccentric puncture outfit further includes a first sealing assembly 400 and a second sealing assembly 500 for sealing and passing instruments, wherein the first sealing assembly 400 is fixed on the first tube head 110, and the second sealing assembly 500 is fixed on the second tube head 210 and is located on a side of the first sealing assembly 400 facing away from the first tube body 120. By providing the first seal assembly 400 and the second seal assembly 500 to seal an instrument therethrough, instrument operation is assured in a sealed condition.

As shown in fig. 4 and 5, the first sealing assembly 400 includes a first sealing valve 410 and a first fixing member 420, and the first sealing valve 410 abuts against an end of the first tube head 110 away from the first tube body 120 and is fixed by the first fixing member 420.

Wherein the first sealing valve 410 is used for the instrument seal to pass through and the first fixing member 420 is used for fixing the first sealing valve 410 to the first cartridge 110. Specifically, the first sealing valve 410 includes a first valve portion 411 and a first connecting portion 412 connected to a peripheral edge of the first valve portion 411, and the first fixing member 420 fixes the first connecting portion 412 to an end of the first tube head 110 facing away from the first tube body 120 to fix the first sealing valve 410.

More specifically, the end of the first tube head 110 away from the first tube body 120 is provided with a plurality of first insertion parts 112, the first fixing member 420 is annular, and is provided with a fixing insertion hole 421 adapted to the first insertion part 112, and the first connection part 412 is also provided with a connection insertion hole 4121 adapted to the first insertion part 112, when assembling, the first insertion part 112 sequentially penetrates through the connection insertion hole 4121 and the fixing insertion hole 421, so that the first connection part 412 is fixed between the first fixing member 420 and the end of the first tube head 110.

The first valve portion 411 may have a V-shaped cross-section with an opening opposite the first tubular body 120, i.e., the first sealing valve 410 is also eccentric to fit an eccentric piercer. The opening is intended for the passage of instruments, it being noted that the opening is closed in the initial state, so that the tightness is ensured.

As shown in fig. 4 and 6, the eccentric puncturer further includes a valve seat 600, and the valve seat 600 is connected between the second cartridge 210 and the second seal assembly 500.

The second sealing assembly 500 comprises a second sealing valve 510 and a second fixing member 520, wherein the second sealing valve 510 is fixed on the valve seat 600 through the second fixing member 520, and the second sealing valve 510 is opposite to the first pipe body 120. The second sealing valve 510 may have the same shape as the first sealing valve 410, and includes a second valve portion and a second connecting portion connected to a periphery of the second valve portion, and the second connecting portion is also fixed to the second fixing member 520 by a first plug-in portion. Except that the second valve portion is tapered with a through hole 511 for the passage of the instrument, the through hole 511 being opposite the first shaft 120, as shown in fig. 4.

As shown in fig. 4 and 6, the valve seat 600 includes a valve body 610, the valve body 610 may be annular, both ends of the valve body 610 are respectively provided with a screw-threaded portion 611 and a clamping portion 612, the screw-threaded portion 611 and the second tube head 210 are in screw-threaded, and the clamping portion 612 is clamped with the second fixing member 520. The valve seat 600 is provided for securing the second seal assembly 500.

Specifically, the screw-on portion 611 can be an internal thread, one end of the second tube head 210, which is far away from the second tube body 220, is provided with an external thread, and the external thread is matched with the screw-on portion 611, so that the second tube head 210 and the valve body 610 are in threaded connection. The clamping portion 612 may be a slot, and the outer periphery of the second fixing member 520 is inserted into the slot to clamp the two.

More specifically, a stopper 620 is disposed on an inner wall of the valve body 610, and a second through hole 621 opposite to the through hole 511 is disposed on the stopper 620.

As shown in fig. 4 and 6, the eccentric puncture outfit further includes a cover plate 700, the cover plate 700 is fixed on a side of the second fixing member 520 away from the valve seat 600, and a cover plate through hole 710 opposite to the first pipe body 120 is formed on the cover plate 700. The cover plate through hole 710 is used for instrument passing.

In addition, the cover plate through hole 710, the second sealing valve 510, the second through hole 621 and the first sealing valve 410 are all opposite to the first tube body 120, so that the instrument sequentially passes through the cover plate through hole 710, the second sealing valve 510, the second through hole 621, the first sealing valve 410 and the first tube body 120 and enters the body cavity. The instrument is now sealed by said second sealing valve 510 and said first sealing valve 410.

As shown in fig. 4, a plurality of air-entraining portions 121 are disposed on an inner wall of the first tube body 120, and are used for guiding air and enabling the air to be attached to or sprayed parallel to a surface of the endoscope, so as to protect the lens and prevent the lens from fogging.

Specifically, an air inlet channel 1001 is formed in the first tube body 120, and the cavity mirror is also introduced into the first tube body 120, so that the introduced gas can be ejected along with the air introducing part 121, and the air introducing part 121 can make the gas attached to or ejected parallel to the surface of the cavity mirror, so as to form a stable protective barrier effect around the lens, thereby effectively preventing the lens from being fogged and affecting the operation of medical staff.

In one embodiment, referring to fig. 4, the bleed portions 121 may be helical and equally spaced. So that the gas passes between two adjacent bleed air portions 121 and is injected along the bleed air portions 121.

In another embodiment, referring to fig. 8, the air-entraining portion 121 may be in a straight shape and extend in the axial direction of the first pipe body 120. Wherein a plurality of the bleed portions 121 may be equally spaced about the axis of the first pipe body 120. The inducing portion 121 may have a structure of being wide at the top and narrow at the bottom, or narrow at the top and wide at the bottom, but is not limited thereto.

As shown in fig. 1 to 4, an anti-slip ring 221 is disposed on an outer wall of the second pipe body 220, and the anti-slip ring 221 is added to increase friction force, so as to achieve a fixing effect.

As shown in fig. 9, the device further comprises a pressure and gas injection unit for injecting gas into the body cavity, exhausting gas and measuring pressure.

Specifically, the test gas injection unit is communicated with the body cavity through two puncture outfits, wherein the test gas injection unit is communicated with a gas inlet hole 211 and a smoke outlet hole 212 on one puncture outfit through two pipelines, and is communicated with the other puncture outfit through one pipeline, so that gas injection, smoke exhaust and pressure measurement are realized. It should be noted that the puncturing device communicating the air inlet 211 and the smoke outlet 212 is an eccentric puncturing device, and another puncturing device may be a general puncturing device.

More specifically, during the establishment phase of the body cavity (the region where the instruments are operated), the gas inlet pipeline injects gas into the body cavity, and the smoke exhaust pipeline performs real-time pressure measurement on the pressure of the body cavity. After the body cavity is built, the smoke exhaust function is started through the smoke exhaust pipeline, and the pressure is monitored in real time through the pressure measurement pipeline. Therefore, the body cavity pressure can be monitored in real time and the pressure can be adjusted in the body cavity perfusion stage and the circulation stage, and the problem that the existing pressure measurement cannot be carried out in real time is solved. In summary, the first tube body and the second tube body enter the body cavity, and gas is injected into the body cavity through the gas inlet channel, so that the space of the body cavity is enlarged to increase the distance between tissues, and the operation is performed conveniently. Still carry out through the exhaust fume channel, the operation implementation time extension that avoids flue gas to the lens pollution to cause in the operation process and can't in time handle the emergence of the crisis (such as heavy hemorrhage) condition is avoided. Simultaneously, first shaft of pipe inner wall interval is equipped with a plurality of bleed portions, makes gas flow in order to utilize bleed portion guide gas and make gas can laminate or be on a parallel with the chamber mirror surface and spray, reach and form stable protection barrier effect around the camera lens, and then the protection camera lens does not receive the invasion of smog. Moreover inlet channel with smoke exhaust channel independently sets up, and both mutual noninterference effectively promote the security, in addition, the puncture ware is eccentric structure, can play good operation effect in operation space or the limited operation scene of operating range, satisfies the operation demand of various angles, and then effectively promotes the suitability.

The above-mentioned embodiments are only for illustrating the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the same, and the scope of the present invention is not limited by the embodiments, i.e. all equivalent changes or modifications made in the spirit of the present invention are still within the scope of the present invention.

Claims

1. An eccentric puncture instrument, characterized by comprising a first sleeve (100) and a second sleeve (200), wherein the first sleeve (100) is sleeved in the second sleeve (200), an air inlet channel (1001) is formed in the first sleeve (100), and a smoke exhaust channel (1002) is formed between the first sleeve (100) and the second sleeve (200); first sleeve pipe (100) are including first tube head (110) and first pipe shaft (120) of intercommunication each other, second sleeve pipe (200) are including second tube head (210) and second pipe shaft (220) of intercommunication each other, first tube head (110) are located inside second tube head (210), first pipe shaft (120) are located inside second pipe shaft (220), and first pipe shaft (120) deviate the center of first tube head (110), second pipe shaft (220) deviate the center of second tube head (210).

2. The eccentric puncture outfit of claim 1, further comprising two sealing rings (300), wherein the sealing rings (300) are sleeved between the first pipe head (110) and the second pipe head (210), the second pipe head (210) is provided with an air inlet hole (211) and a smoke exhaust hole (212), the smoke exhaust hole (212) is located at the lower parts of the two sealing rings (300) and communicated with the smoke exhaust channel (1002), the first pipe head (110) is provided with a first through hole (111), and the air inlet hole (211) and the first through hole (111) are both located between the two sealing rings (300).

3. The eccentric penetrator according to claim 1, further comprising a first seal assembly (400) and a second seal assembly (500) for sealing passage of an instrument, the first seal assembly (400) being secured to the first cartridge (110), the second seal assembly (500) being secured to the second cartridge (210) on a side of the first seal assembly (400) facing away from the first body (120).

4. The eccentric puncture outfit of claim 3, wherein the first sealing assembly (400) comprises a first sealing valve (410) and a first fixing member (420), wherein the first sealing valve (410) abuts against the end of the first tube head (110) facing away from the first tube body (120) and is fixed by the first fixing member (420).

5. The eccentric puncturer of claim 3, further comprising a valve seat (600), wherein the valve seat (600) is coupled between the second cartridge (210) and the second seal assembly (500).

6. The eccentric puncturer of claim 5, wherein said second seal assembly (500) comprises a second seal valve (510) and a second retainer (520), said second seal valve (510) being secured to said valve seat (600) by said second retainer (520), and said second seal valve (510) being opposite said first body (120).

7. The eccentric puncture outfit of claim 6, wherein the valve seat (600) comprises a valve body (610), both ends of the valve body (610) are respectively provided with a screw-connection part (611) and a clamping part (612), the screw-connection part (611) and the second tube head (210) are in screw connection, and the clamping part (612) is clamped with the second fixing part (520).

8. The eccentric puncture instrument according to claim 6, further comprising a cover plate (700), wherein the cover plate (700) is fixed to a side of the second fixing member (520) facing away from the valve seat (600), and the cover plate (700) is provided with a cover plate through hole (710) opposite to the first pipe body (120).

9. The eccentric puncture instrument according to claim 1, wherein a plurality of air entraining portions (121) are provided at intervals on the inner wall of the first tube body (120) for guiding the gas and enabling the gas to be sprayed against or parallel to the surface of the cavity mirror.

10. The eccentric puncture outfit of claim 2, wherein the outer wall of the second tube head (210) is provided with a first connection tube (213) and a second connection tube (214), the second connection tube (214) is located outside the first connection tube (213), the smoke discharge hole (212) is located inside the first connection tube (213), and the air intake hole (211) is located between the first connection tube (213) and the second connection tube (214).

11. The eccentric puncture outfit of claim 1, wherein one end of the second tube body (220) facing away from the second tube head (210) is provided with a plurality of smoke inlet holes (222), and the smoke inlet holes (222) are long holes and are communicated with the smoke evacuation channel (1002).

12. The eccentric puncture instrument according to claim 1, further comprising a pressure-measuring and gas-injecting unit for injecting gas into, removing smoke from, and measuring pressure in the body cavity.