CN105944160A - Negative pressure drainage system easy to replace - Google Patents

Negative pressure drainage system easy to replace Download PDF

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Publication number
CN105944160A
CN105944160A CN201610375874.4A CN201610375874A CN105944160A CN 105944160 A CN105944160 A CN 105944160A CN 201610375874 A CN201610375874 A CN 201610375874A CN 105944160 A CN105944160 A CN 105944160A
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CN
China
Prior art keywords
drainage
drainage tube
flange
trocar sheath
lip
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Application number
CN201610375874.4A
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Chinese (zh)
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CN105944160B (en
Inventor
明星
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明星
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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/0023Suction drainage systems
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/008Drainage tubes; Aspiration tips
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/008Drainage tubes; Aspiration tips
    • A61M1/0084With gas or fluid supply means, e.g. for supplying rinsing fluids, anticoagulants
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12MAPPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M23/00Constructional details, e.g. recesses, hinges
    • C12M23/02Form or structure of the vessel
    • C12M23/08Flask, bottle or test tube
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12MAPPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M29/00Means for introduction, extraction or recirculation of materials, e.g. pumps

Abstract

The invention relates to a negative pressure drainage system easy to replace. The negative pressure drainage system comprises a drainage pipe, a sponge body, an outer sleeve and a sealing band. An opening of the drainage pipe is upward, and a third protruding edge extending outwards surrounds the upper portion of the drainage pipe. The drainage pipe is provided with inner drainage holes. The sponge body covers the outer surface of the drainage pipe from bottom to top. A second protruding edge extending outwards surrounds the upper end of the sponge body. The upper surface of the second protruding edge makes contact with the lower surface of the third protruding edge. An opening of the outer sleeve is upward, and outer drainage holes are formed in the outer sleeve. A first protruding edge extending outwards surrounds the opening of the outer sleeve. The sponge body is sleeved with the outer sleeve. The upper surface of the first protruding edge makes contact with the lower surface of the second protruding edge. The sealing band is used for winding around a gap between the first protruding edge and the second protruding edge to form a sealing layer. Efficient drainage can be achieved, the cost is low, the drainage pipe can be replaced more conveniently, and the probability of blocking of the negative pressure drainage device is reduced.

Description

Easily changeable drainage system
Technical field
The present invention relates to medical apparatus and instruments, be specifically related to a kind of easily changeable drainage system.
Background technology
It is known that, control big emphasis and the difficult point that surgical infection is current medical domain, breast, intraperitoneal drainage are that Clinical Surgery processes one of surgical infection treatment means most important, topmost, and the quality of drainage effect often determines the therapeutic effect of patient and lapses to advancing of disease.At surgery infected patient, the intractable abdominal cavity infection caused such as the most common serious symptom necrotizing pancreatitis, digestive tract fistula, intraperitoneal drainage becomes extremely crucial remedy measures.Therefore, body cavity drain modern medicine especially surgical infection process in have irreplaceable status.
Using at present most in body cavity drain is single-chamber drainage tube.Although this drainage tube is simple, but easily being blocked by the soft tissue at drainage tube, cause inadequate drainage, hydrops, it is impossible to well play drain purpose, severe patient may result in infection or fistula of operative incision, needs opening operation abdomen drain again.To this end, people have invented double-jacket tube formula drainage tube, including outer tube and the inner tube being positioned at outer tube, it is desirable to have the inner tube of tamper to realize drain again by changing to amass.But existing double-sleeve type drainage tube is to ensure outer tube and the sealing of inner tube junction, often use sufficiently complex attachment structure, make the operation when changing inner tube the most loaded down with trivial details, operating time length and easily touch or cause outer tube to shift, even need to reappose outer tube, be greatly increased complication disease incidence rate painful with sufferer, seriously reduce the application effect of double-jacket tube formula drainage tube, the production cost also resulting in this double-sleeve type drainage tube is higher, is unfavorable for popularization and application;And, find that some soft tissues are easy to be sucked in inner tube in practice, thus cause the device such as inner tube and depression drainage device to block, but do not have any tamper in finding inner tube after inner tube is taken out, this is owing to these soft tissues are half free state, one end is still grown in vivo, and the other end is cotton-shaped being inhaled in inner tube, but uses existing double-jacket tube formula drainage tube that this situation can not be avoided to occur.
Summary of the invention
The purpose of the present invention is to propose to a kind of easily changeable drainage system, this drainage system is capable of efficient drain, and low cost, and the replacing of drainage tube is convenient, reduces depression drainage device and the probability of blocking occurs.
The easily changeable drainage system of one of the present invention, including: drainage tube, described drainage tube is to be surrounded by drainage tube sidewall and drainage tube diapire, the top loop of the opening up and described drainage tube of described drainage tube is wound with outward extending third lip, described drainage tube is provided with conduction hole in several, and several described interior conduction holes are respectively positioned on the lower section of described third lip;Spongy body, described spongy body covers from bottom to up on the outer surface of described drainage tube, and the top ring of described spongy body is wound with outward extending second flange, and the upper surface of described second flange contacts with the lower surface of described third lip;Trocar sheath, described trocar sheath is to be surrounded by trocar sheath sidewall and trocar sheath diapire, opening up and the described trocar sheath of described trocar sheath is provided with several external drainage holes, the opening part of described trocar sheath is surrounded with outward extending first flange, described trocar sheath is sheathed on outside described spongy body, and the upper surface of described first flange contacts with the lower surface of described second flange;Band, described band is for being wrapped on the gap between described first flange and described third lip formation sealant, described sealant is completely covered the gap between described first flange and described third lip, the top loop of described sealant around and be fixed in described third lip, the lower loop of described sealant around and be fixed on described first flange, to realize being tightly connected of described first flange and described third lip.
Further, being provided with flush pipe between outer surface and the outer surface of described drainage tube of described spongy body, described flush pipe is provided with flushing hole, and the upper end of described flush pipe is positioned at the outside of described drainage tube and is positioned at the outside of described trocar sheath.
Further, described third lip is provided with the installing hole corresponding with described flush pipe, the top of described flush pipe is arranged in described third lip by described installing hole, the opening part of described flush pipe upper end is provided with sealing member by dismountable mode, described sealing member is for closing the opening of described flush pipe upper end, the lower end of described flush pipe forms bending part to the camber of described drainage tube, described bending part stretches in described drainage tube from the bottom of described drainage tube, several described flushing holes it are evenly distributed with on the bottom of described flush pipe and described bending part.
Further, several described external drainage holes are evenly distributed on bottom and the described trocar sheath diapire of described trocar sheath sidewall.
Further, it is conduction part that described drainage tube sidewall is positioned at the part below described third lip, and several described interior conduction holes are evenly distributed in described drainage tube diapire and described conduction part.
Further, the internal diameter of described trocar sheath is more than the external diameter of described spongy body.
Further, the external diameter of described first flange is not more than the external diameter of described second flange, and the external diameter of described third lip is not more than the external diameter of described second flange.
Further, described spongy body is made up of medical sponge.
Further, the outer surface of described trocar sheath sidewall is provided with scale, and described scale is arranged along the length direction of described trocar sheath.
Further, also include union joint, flexible pipe and depression drainage device, one end of described union joint is arranged on the opening part of described drainage tube by dismountable mode, the other end of described union joint is connected with one end of described flexible pipe, the other end of described flexible pipe is connected with described depression drainage device, and described depression drainage device is for realizing the negative pressure in drainage tube.
The present invention is provided with trocar sheath, spongy body and drainage tube, and profit uses the mode of negative pressure to carry out drain, it is possible to realize efficient drain;Spongy body blocks the soft tissue in drain region, it is to avoid these soft tissues enter depression drainage device through drainage tube and cause blocking or mechanical breakdown;Drainage tube and spongy body can be replaced, trocar sheath then provides the passage needed for replacing, it is to avoid blind operation brings damage, and the spongy body simultaneously replaced out can do biochemical analysis;Flush pipe is set, reduces drainage tube and the blocked risk of spongy body, and this flush pipe can be conducive to extracting sepage out carry out the biochemical analysises such as antibacterial culturing as the suction channel of syringe;Trocar sheath and drainage tube carry out sealing by band to be fixed, and only needs to cut off band annular, can extract drainage tube out and spongy body is replaced when changing drainage tube and spongy body, and operation and technique are the simplest;Trocar sheath is provided with the first flange, drainage tube is provided with third lip, spongy body is provided with the second flange, and second flange be sandwiched between the first flange and third lip, this just defines gap between the first flange and third lip, owing to having negative pressure in gap, negative pressure inwardly attracts band, promote band preferably to be formed between the first flange and third lip to seal, there is good seal performance, the advantage of low cost;When changing drainage tube and spongy body, third lip and the second flange person convenient to operate grip and are replaced, and the first flange person convenient to operate grips with stable trocar sheath, reduces the difficulty of replacing, improves the stationarity of replacing, reduces the probability of trocar sheath displacement;Arranging scale on trocar sheath, the degree of depth and the distance exited inserted trocar sheath in use provide reference accurately, improve the accuracy of operation.
Accompanying drawing explanation
Fig. 1 is the axonometric drawing of the present invention;
Fig. 2 is the decomposing schematic representation of Fig. 1;
Fig. 3 is the structural representation of the present invention;
Fig. 4 is the operating diagram of the present invention;
Fig. 5 is one of fundamental diagram of the present invention;
Fig. 6 is the two of the fundamental diagram of the present invention.
In figure: 1 trocar sheath;2 spongy bodies;3 drainage tubes;4 flush pipes;5 bands;6 first flanges;7 second flanges;8 third lip;9 installing holes;10 dodge hole;11 external drainage holes;Conduction hole in 12;13 bending parts;14 union joints;15 flexible pipes;16 depression drainage devices;17 syringes;18 scales;19 cutters.
Detailed description of the invention
The invention will be further described below in conjunction with the accompanying drawings.
The easily changeable drainage system of one as shown in Figure 1-Figure 3, including drainage tube 3, spongy body 2, trocar sheath 1 and band 5.Drainage tube 3 is to be surrounded by drainage tube sidewall and drainage tube diapire, the top loop of the opening up and drainage tube 3 of drainage tube 3 is wound with outward extending third lip 8, drainage tube 3 is provided with conduction hole 12 in several, and in several, conduction hole 12 is respectively positioned on the lower section of third lip 8;Spongy body 2 covers from bottom to up on the outer surface of drainage tube 3, and the top ring of spongy body 2 is wound with outward extending second flange 7, and the upper surface of the second flange 7 contacts with the lower surface of third lip 8;Trocar sheath 1 is to be surrounded by trocar sheath sidewall and trocar sheath diapire, opening up and the trocar sheath 1 of trocar sheath 1 is provided with several external drainage holes 11, the opening part of trocar sheath 1 is surrounded with outward extending first flange 6, trocar sheath 1 is sheathed on outside spongy body 2, the upper surface of the first flange 6 and the lower surface contact of the second flange 7;Band 5 is for being wrapped on the gap between the first flange 6 and third lip 8 formation sealant, sealant is completely covered the gap between the first flange 6 and third lip 8, the top loop of sealant around and be fixed in third lip 8, the lower loop of sealant around and be fixed on the first flange 6, to realize being tightly connected of the first flange 6 and third lip 8.Above-mentioned band 5 can be adhesive tape, observes for convenience, can select transparent band 5, and preferred as one, band 5 selects medical pad pasting.
As shown in Figure 4, the upper end of drainage tube 3 is connected with depression drainage device 16 by flexible pipe 15 in use, drainage tube 3 and spongy body 2 are responsible for conduction and the drain sepage of negative pressure, the external drainage hole 11 of trocar sheath 1 is responsible for introducing in spongy body 2 and drainage tube 3 by sepage, and outside the soft tissue in drain region is blocked in by trocar sheath 1, spongy body 2 blocks the soft tissue in drain region, it is to avoid these soft tissues enter depression drainage device 16 through drainage tube 3 and cause blocking and mechanical breakdown;On pollution or the blocking of drainage channel thus drainage efficiency is affected in order to reduce sepage, drainage tube 3 and spongy body 2 are designed as changeable type, trocar sheath 1 then provides the passage needed for replacing, it is to avoid blind operation brings damage, and the spongy body 2 simultaneously replaced out can do biochemical analysis.Trocar sheath 1 and drainage tube 3 carry out sealing by band 5 to be fixed, if only needing when need to change drainage tube 3 and spongy body 2 to cut off band 5 annular, can extract drainage tube 3 out and spongy body 2 is replaced, again carry out sealing with band 5 and fix after replacing, operation and technique are the simplest;Trocar sheath 1 is provided with the first flange 6, drainage tube 3 is provided with third lip 8, spongy body 2 is provided with the second flange 7, and second flange 7 be sandwiched between the first flange 6 and third lip 8, this just defines gap between the first flange 6 and third lip 8, owing to having negative pressure in gap, negative pressure inwardly attracts band 5, promote band 5 preferably to be formed between the first flange 6 and third lip 8 to seal, there is good seal performance, the advantage of low cost, especially when band 5 has certain elasticity, sealing effectiveness is splendid;When changing drainage tube 3 and spongy body 2, third lip 8 and the second flange 7 person convenient to operate grip and are replaced, and the first flange 6 person convenient to operate grips with stable trocar sheath 1, reduces the difficulty of replacing, improve the stationarity of replacing, reduce the probability of trocar sheath 1 displacement.
Improving as one, as shown in Figure 1-Figure 3, be provided with flush pipe 4 between outer surface and the outer surface of drainage tube 3 of spongy body 2, flush pipe 4 is provided with flushing hole, and the upper end of flush pipe 4 is positioned at the outside of drainage tube 3 and is positioned at the outside of trocar sheath 1.This flush pipe 4 can inject flushing liquor to the lower end of the lower end of drainage tube 3 and spongy body 2, reduce drainage tube 3 and the blocked risk of spongy body 2, and this flush pipe 4 can be conducive to extracting sepage out carry out the biochemical analysises such as antibacterial culturing as the suction channel of syringe 17.
Preferred as one, third lip 8 is provided with the installing hole 9 corresponding with flush pipe 4, the top of flush pipe 4 is arranged in third lip 8 by installing hole 9, the opening part of flush pipe 4 upper end is provided with sealing member by dismountable mode, sealing member is for closing the opening of flush pipe 4 upper end, the lower end of flush pipe 4 forms bending part 13 to the camber of drainage tube 3, bending part 13 stretches in drainage tube 3 from the bottom of drainage tube 3, and the bottom of flush pipe 4 and bending part 13 are evenly distributed with several flushing holes.Bending part 13 strengthens the cleaning in drainage tube 3, and the flush pipe 4 of this structure can be taken out together with drainage tube 3 and spongy body 2 from trocar sheath 1, changes very convenient.
Preferred as one, as depicted in figs. 1 and 2, several external drainage holes 11 are evenly distributed on bottom and the trocar sheath diapire of trocar sheath sidewall.Use said structure, the bottom of trocar sheath 1 is responsible for introducing sepage in spongy body 2 and drainage tube 3, the soft tissue that need not at the region of drain is then kept apart by the middle part of trocar sheath 1 and top, is not affected by the negative pressure in trocar sheath 1, thus realizes purposive negative pressure drainage.
Preferred as one, it is conduction part that drainage tube sidewall is positioned at the part below third lip 8, and in several, conduction hole 12 is evenly distributed in drainage tube diapire and conduction part.Use said structure, be positioned in the middle part of conduction part and the conduction hole 12 on top is difficult to blocked, it is ensured that there is between drainage tube 3 and trocar sheath 1 stable negative pressure, extend the replacing interval of drainage tube 3 and spongy body 2.
It is preferred as one, as it is shown on figure 3, the internal diameter of described trocar sheath 1 is more than the external diameter of described spongy body 2.Use this structure, convenient extraction drainage tube 3 and spongy body 2 from trocar sheath 1, be prevented effectively from when changing drainage tube 3 and spongy body 2 and drive trocar sheath 1, decrease the incidence rate of complication and the misery of sufferer.
Preferred as one, the external diameter of the first flange 6 is not more than the external diameter of the second flange 7, and the external diameter of third lip 8 is not more than the external diameter of the second flange 7.Using said structure, when changing drainage tube 3 and spongy body 2 in feel more preferably, operate more convenient, this is owing to the second flange 7 is softer, uses said structure operator can preferably hold the second flange 7.Such as, the external diameter of optional second flange 7 is equal to the external diameter of third lip 8, and both external diameters are all higher than the external diameter of the first flange 6;Or the external diameter of the first flange 6 is equal to the external diameter of third lip 8, and both external diameters are respectively less than the external diameter of the second flange 7;So operator can be good at holding the second flange 7 when changing drainage tube 3 and spongy body 2, improves feel.
Improving as one, as depicted in figs. 1 and 2, the outer surface of trocar sheath sidewall is provided with scale 18, and scale 18 is arranged along the length direction of trocar sheath 1.Scale 18 degree of depth inserting trocar sheath 1 and the distance exited are set reference accurately is provided, improve the accuracy of operation.
Preferred as one, as shown in Figure 4, also include union joint 14, flexible pipe 15 and depression drainage device 16, one end of union joint 14 is arranged on the opening part of drainage tube 3 by dismountable mode, the other end of union joint 14 is connected with one end of flexible pipe 15, the other end of flexible pipe 15 is connected with depression drainage device 16, and depression drainage device 16 is for realizing the negative pressure in drainage tube 3.
Particularly, trocar sheath diapire is hemispherical, is conducive to trocar sheath 1 being inserted drain region, to alleviate the misery of insertion process sufferer.
Preferred as one, spongy body 2 is made up of medical sponge.Further, spongy body 2 can be fabricated to the hollow cylinder matched with drainage tube 3, directly drainage tube 3 is inserted in spongy body 2 when assembling, it is also possible to what setting was corresponding with flush pipe 4 on spongy body 2 dodges hole 10, convenient installation flush pipe 4.
Easily changeable drainage system of the present invention changes the process of drainage tube 3 and spongy body 2: as shown in Figure 5 and Figure 6, it is first shut off depression drainage device 16, and make drainage tube 3 and union joint 14 separate, then utilize cutter 19 at band 5 ring cutting one circle, band 5 is partitioned from the periphery of the second flange 7, then holding the second flange 7 and third lip 8 upwards extracts drainage tube 3 and spongy body 2, operator can hold the first flange 6 to prevent trocar sheath 1 from moving when extracted;Further take out new drainage tube 3 and spongy body 2, hold the second flange 7 and third lip 8 and new drainage tube 3 and spongy body 2 are inserted in trocar sheath 1, be connected and sealed finally by band 5, replacement operation simply, the shortest and reduce the probability of trocar sheath displacement.Obviously when extracting drainage tube 3 and spongy body 2, both can be fixed together by the band 5 remained in the second flange 7 and third lip 8, further such that drainage tube 3 and spongy body 2 can integrally be pulled out.Obviously, when band 5 is adhesive tape, the top of sealant is pasted and fixed in third lip 8, and the bottom of sealant is pasted and fixed on the first flange 6, is tightly connected excellent.
In describing the invention, it will be appreciated that, term " on ", the orientation of the instruction such as D score be based on the orientation represented by the coordinate system in accompanying drawing 1, it is for only for ease of the description present invention and simplifies description, rather than instruction or hint indication device or element must have specific orientation, with specific azimuth configuration and operation, be therefore not considered as limiting the invention.

Claims (10)

1. an easily changeable drainage system, it is characterised in that including:
Drainage tube (3), described drainage tube (3) is to be surrounded by drainage tube sidewall and drainage tube diapire, the top loop of the opening up and described drainage tube (3) of described drainage tube (3) is wound with outward extending third lip (8), described drainage tube (3) is provided with conduction hole (12) in several, and several described interior conduction holes (12) are respectively positioned on the lower section of described third lip (8);
Spongy body (2), described spongy body (2) covers from bottom to up on the outer surface of described drainage tube (3), the top ring of described spongy body (2) is wound with outward extending second flange (7), and the upper surface of described second flange (7) contacts with the lower surface of described third lip (8);
Trocar sheath (1), described trocar sheath (1) is to be surrounded by trocar sheath sidewall and trocar sheath diapire, opening up and the described trocar sheath (1) of described trocar sheath (1) is provided with several external drainage holes (11), the opening part of described trocar sheath (1) is surrounded with outward extending first flange (6), described trocar sheath (1) is sheathed on described spongy body (2) outward, and the upper surface of described first flange (6) contacts with the lower surface of described second flange (7);
Band (5), described band (5) is used for being wrapped on the gap between described first flange (6) and described third lip (8) formation sealant, described sealant is completely covered the gap between described first flange (6) and described third lip (8), the top loop of described sealant around and be fixed in described third lip (8), the lower loop of described sealant around and be fixed on described first flange (6), to realize being tightly connected of described first flange (6) and described third lip (8).
Easily changeable drainage system the most according to claim 1, it is characterized in that: between outer surface and the outer surface of described drainage tube (3) of described spongy body (2), be provided with flush pipe (4), described flush pipe (4) is provided with flushing hole, and the upper end of described flush pipe (4) is positioned at the outside of described drainage tube (3) and is positioned at the outside of described trocar sheath (1).
Easily changeable drainage system the most according to claim 2, it is characterized in that: described third lip (8) is provided with the installing hole (9) corresponding with described flush pipe (4), the top of described flush pipe (4) is arranged in described third lip (8) by described installing hole (9), the opening part of described flush pipe (4) upper end is provided with sealing member by dismountable mode, described sealing member is used for closing the opening of described flush pipe (4) upper end, the lower end of described flush pipe (4) forms bending part (13) to the camber of described drainage tube (3), described bending part (13) stretches in described drainage tube (3) from the bottom of described drainage tube (3), it is evenly distributed with several described flushing holes on the bottom of described flush pipe (4) and described bending part (13).
Easily changeable drainage system the most according to claim 1, it is characterised in that: several described external drainage holes (11) are evenly distributed on bottom and the described trocar sheath diapire of described trocar sheath sidewall.
Easily changeable drainage system the most according to claim 1, it is characterized in that: it is conduction part that described drainage tube sidewall is positioned at the part of described third lip (8) lower section, and several described interior conduction holes (12) are evenly distributed in described drainage tube diapire and described conduction part.
Easily changeable drainage system the most according to claim 1, it is characterised in that: the internal diameter of described trocar sheath (1) is more than the external diameter of described spongy body (2).
Easily changeable drainage system the most according to claim 1, it is characterised in that: the external diameter of described first flange (6) is not more than the external diameter of described second flange (7), and the external diameter of described third lip (8) is not more than the external diameter of described second flange (7).
Easily changeable drainage system the most according to claim 1, it is characterised in that: described spongy body (2) is made up of medical sponge.
Easily changeable drainage system the most according to claim 1, it is characterised in that: the outer surface of described trocar sheath sidewall is provided with scale (18), and described scale (18) is arranged along the length direction of described trocar sheath (1).
10. according to the easily changeable drainage system described in any one of claim 1-9, it is characterized in that: also include union joint (14), flexible pipe (15) and depression drainage device (16), one end of described union joint (14) is arranged on the opening part of described drainage tube (3) by dismountable mode, the other end of described union joint (14) is connected with one end of described flexible pipe (15), the other end of described flexible pipe (15) is connected with described depression drainage device (16), and described depression drainage device (16) is used for realizing the negative pressure in drainage tube (3).
CN201610375874.4A 2016-05-31 2016-05-31 Easily changeable drainage system Expired - Fee Related CN105944160B (en)

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Inventor after: Ming Xing

Inventor after: Tang Ying

Inventor after: Sun Shijin

Inventor after: Zhong Xiaozheng

Inventor after: Li Yang

Inventor after: Hua Xiang

Inventor before: Ming Xing

Inventor after: Ming Xing

Inventor after: Tang Ying

Inventor after: Sun Shijin

Inventor after: Zhong Xiaozheng

Inventor after: Li Yang

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