CN209490065U - Structure improved puncture outfit and puncture outfit easy to disassemble - Google Patents

Abstract

The utility model provides a kind of structure improved puncture outfit and puncture outfit easy to disassemble, the puncture outfit includes puncturing lever, puncture cannula and seal assembly, puncturing lever includes pedestal, cutting tip and the core bar between pedestal and cutting tip, and puncture cannula includes casing main body and the expansion cylinder positioned at casing main body proximal end.

Description

Structure improved puncture outfit and puncture outfit easy to disassemble

Technical field

The invention belongs to medical instruments fields, and in particular to a kind of structure improved puncture outfit.

Background technique

In the operation of minimally invasive medical-therapeutic treatment of human body, once finding lesion in body, need to perform the operation or cut off, in surgical procedure In, it is necessary first to application is puncture outfit, and puncture outfit is a kind of puncture stomach wall and provides for other surgical instruments logical into body cavity The surgical instrument in road belongs to a kind of Minimally Invasive Surgery instrument.Puncture outfit generally includes the set for entering channel as other surgical instruments Tube socket is formed with the switch cap that casing seat is arranged in and through the puncturing lever in described sleeve pipe seat and switch cap.Firstly, being Skin is penetrated, first cuts skin epidermis with scalpel, then penetrates skin using puncturing lever and together with casing seat and switch cap Enter body cavity together, then extract puncturing lever out, casing seat and switch cap can serve as various instruments and tool introducing abdominal cavity Interior and offer aeration establishes pneumoperitoneum and stomach wall is made to be increased to the channel above organ.It is noted that establishing pneumoperitoneum and holding Pneumoperitoneum is completed under collective effect by two parts of sealing valve in puncture outfit and air shuttle valve.Sealing valve is one normally opened Valve body, and air shuttle valve is a normally closed valve body.When in puncture outfit channel without surgical instrument and puncturing lever, by normally closed resistance Air valve keeps pneumoperitoneum；And after having instrument or puncturing lever enters, air shuttle valve is opened by bucket, and at this time puncture outfit passes through Minimally Invasive Surgery device The outside wall surface of tool or puncturing lever and sealing valve fitting-type keep pneumoperitoneum at a closed housing.

The sealing valve of existing puncture outfit forms (thin slice such as Fig. 1, sealing valve such as Fig. 2) by 3-4 valve thin slice, uses in puncture outfit During, since there are fit clearances between thin slice, the case where having gas leakage often generation, at the same when instrument is extracted out easily cause it is close Valve turnup is sealed, when carrying out visualization Minimally Invasive Surgery using puncture outfit, since there are the liquid such as the remaining blood of gap meeting in sealing valve Body, when visualizing instrument and passing through sealing valve, the blood of remaining easily pollutes the camera for visualizing instrument end, causes to perform the operation What is carried out is not smooth；Meanwhile sealing valve is generally put into switch cap by existing puncture outfit, and air shuttle valve is put into casing seat, The two is connected by a snap fixation again, is separated the two by pressing releasing button, such as Fig. 3.In use, work as surgical device When tool passes through switch cap and receiver, since the inclined angle of surgical instrument is different, it is easier that switch cap pendulum opposite with receiver It is dynamic, it is connect defective tightness with receiver so as to cause switch cap, leads to the generation of gas leak phenomenon.Puncture outfit seal cap uses simultaneously When instrument Cat-in resisting force it is big, poor sealing effect is also easy to produce gas leak phenomenon.Since components are excessive, the outer of existing puncture outfit is caused Shape is than operation that is cumbersome, being unfavorable in surgical.After operation, when doctor needs to take out pathological tissues from patient's body When, existing puncture outfit needs to press releasing button, removes switch cap, tissue is taken out from casing seat, however due to air shuttle valve It is mounted on casing seat the top, and is a normally closed valve body, is extremely unfavorable for doctor's operation.Generally speaking existing puncture outfit has Following disadvantage.

1. sealing valve is made of multiple thin slices, it is easy gas leakage, is sheltered evil people and countenance evil practices, surgical instrument can turnup after extracting.

2. sealing valve and air shuttle valve on 2 components, by snapping connection, connect not close, easy gas leakage respectively

3. air shuttle valve is mounted on casing seat, it is unfavorable for doctor and takes tissue

4. existing puncture outfit volume and weight are excessive, it is unfavorable for doctor's operation

Summary of the invention

The present invention provides a kind of structure improved puncture outfit, which includes puncturing lever, puncture cannula and sealing group Part, puncturing lever include pedestal, cutting tip and the core bar between pedestal and cutting tip, puncture cannula include casing main body and Expansion shell portion positioned at casing main body proximal end；It is characterized by:

Seal assembly includes:

Upper cover, upper cover are located in the lower end of puncturing lever pedestal, and with first annular part, first annular part central area is logical It crosses the circumferential wall formed on the inside of it and limits first through hole；

Sealing valve, the first tapered wall that there is the first cylindrical wall and be arranged on the downside of the first cylinder wall, this first Shape wall and the first tapered wall are formed using soft elastic material, which is open with third, and the first vertebra shape wall has The diameter of 4th opening, the 4th opening is less than the diameter of puncturing lever core bar；

Neck bush, the neck bush are located in sealing valve, and hard material is used to be formed, have the second cylindrical wall and The second tapered wall on the downside of the second cylinder wall is set, second cylindrical wall and the second tapered wall respectively with the first cylindrical wall and One tapered wall palette, second cylindrical wall have the 5th opening, and the second vertebra shape wall has the 6th opening, and the 6th opening does not surpass Cross the 4th opening；Neck bush and sealing valve limit cooperate

Air shuttle valve has third cylindrical wall and is located in third cylindrical wall bottom and is formed the distal portions of joint-cutting, far End part is made of soft elastic material, and the joint-cutting is in closed state, and when there is puncturing lever to pass through, original place is in closed state Joint-cutting (2603) be forced to strut, and fitted closely with puncturing lever outer wall；

Lower cover, has a cylindrical wall, and the outer wall of the cylindrical wall is equipped with gas injection valve, the upper end of lower cover and lower end respectively with it is upper Lid and puncture cannula bellend it is detachably connected, a seal chamber is limited with this, in the seal chamber store sealing valve, Neck bush and air shuttle valve.

Preferably, upper cover is first annular to be convexly equipped with multiple location holes, lower cover cylindrical wall protrudes out multiple locating rods, positioning Bar is plugged between location hole realization upper cover and lower cover and is sealingly engaged.

Preferably, upper cover is equipped with periphery wall in the outer side wall of circumferential wall, the top end flange of sealing valve is radially outward formed Annular groove, the bottom end positioning installation of periphery wall is in the annular groove.

Preferably, second tapered wall forms discrete more valve structures.

Preferably, more than two elastic card fasteners are equipped on the outside of the expansion cylinder of the puncture cannula, outside lower cover Wall corresponds to latch bolt position equipped with caulking groove, and elastic card fastener and caulking groove cooperation realization puncture cannula and lower cover are detachably connected.

Preferably, air shuttle valve third cylindrical wall top forms annular periphery, which is equipped with multiple mounting holes, Cylinders with small diameter and large-diameter cylinder body are formed in the cylindrical wall of lower cover, the top of cylinders with small diameter forms step, the step point It is furnished with nose bar, which is inserted into mounting hole, and the third cylindrical wall and step limit cooperate.

Palette is realized by sealing ring between cylinder preferably, expanding in large-diameter cylinder body and puncture cannula.

Preferably, the pedestal of puncturing lever has flat-tope structure, puncturing lever pedestal and core bar limit cooperate, core bar and upper cover Limit cooperation.

Preferably, neck bush and sealing valve are by realizing limit cooperation with flowering structure: neck bush outer wall is equipped with barrier, The inner wall of sealing valve, which is equipped with, limits the mobile limit bank of cooperation limitation neck bush with barrier.

Preferably, the soft elastic material is rubber material.

The present invention also provides a kind of puncture outfits easy to disassemble, which includes puncturing lever, puncture cannula and sealing Component, puncturing lever include pedestal, cutting tip and the core bar between pedestal and cutting tip, puncture cannula include casing main body with And the expansion cylinder positioned at casing main body proximal end；Seal assembly includes upper cover, lower cover, wherein lower cover and expansion cylinder are detachable Connection.

Preferably, the expansion cylinder is towards outside distribution, there are two elastic card fasteners symmetrically or asymmetricly, should Elastic card fastener includes elastic arm and clamping portion, and clamping portion has protrusion, is equipped with caulking groove, caulking groove in the outer wall of lower cover cylindrical wall It extends axially downward to cylindrical wall bottom edge, and there is abutment face axially upwards, inside cylinder wall is equipped with limitation protrusion and takes off downwards Blocking portion out presses elastic arm, then the elastic arm of elastic card fastener is embedded in the caulking groove, and clamping portion passes through protrusion and cylinder The blocking portion that wall inner wall is formed limits cooperation.

Compared with the puncture outfit provided in the prior art, the invention has the following advantages: sealing valve is soft by rubber etc. Matter elastic sheet composition, has abandoned existing puncture outfit sealing valve by the laminar design of multi-disc, since sealing valve is by rubber material Expect that the aperture at center processed can be converted with the big freedom in minor affairs of surgical instrument outer diameter, and be fitted close with surgical instrument outer wall, is prevented Gas is escaped from fit clearance in surgical procedure.Sealing valve positioned internal has neck bush；After surgical instrument enters puncture outfit, hand Art instrument first touches hard neck bush, and hard neck bush opens sealing valve by the structure of its more valve in advance；Pass through again later The opening of sealing valve is performed the operation, and design in this way can be effectively prevented sharp instrument and puncture sealing valve.After instrument is extracted, firmly The neck bush of material matter can be effectively prevented sealing valve and be carried over；Air shuttle valve is a normally closed valve body, usually with sealing valve group It closes and uses.When no surgical instrument, which enters puncture outfit, is performed the operation, puncture outfit keeps pneumoperitoneum required for performing the operation by air shuttle valve. And when having surgical instrument to enter puncture outfit to be performed the operation, since air shuttle valve can be opened by instrument, an air shuttle valve can not be depended merely on Keep pneumoperitoneum.At this point, the opening due to sealing valve lower end is less than the outer diameter of surgical instrument, the outer surface of instrument is tightly surrounded, To form a confined space.

Detailed description of the invention

Fig. 1 is the overall structure diagram of puncture outfit provided by the invention；

Fig. 2 is the structure fractionation schematic diagram of puncturing lever provided by the invention, puncture cannula, seal assembly；

Fig. 3 is the axial sectional view of puncturing lever provided by the invention；

Fig. 4 is that the structure of puncture outfit provided by the invention splits schematic diagram；

Fig. 5 is the axial sectional view of puncture cannula provided by the invention, seal assembly；

Fig. 6 is the structural schematic diagram of sealing valve provided by the invention.

Specific embodiment

Below according to attached drawing, the present invention will be described in detail.

Embodiment 1

As shown in Figure 1, puncture outfit includes puncturing lever 1, seal assembly 2 and puncture cannula 3, seal assembly puncturing lever with Sealing room is formed between puncture cannula；In the present invention, the direction that puncture outfit length extends is axial direction, is hung down with axial direction Straight direction is radial, is proximal end close to doctor operating side, is distal end far from doctor operating side；

As shown in Fig. 2, puncturing lever includes the pedestal 11 of proximal end, the cutting tip of distal end and between pedestal and cutting tip Core bar 12, the pedestal can provide handle in operation and be used for doctor or as a kind of tube body across endoscope；With reference to The cross-sectional view of the puncturing lever of Fig. 3, pedestal have flat-tope structure, and flat-tope structure central part is downwardly extending circumferential member 111, week Through-hole A 1110, annular groove between the annular periphery 110 of flat-tope structure and the top margin of circumferential member 111 are limited to part 111 112；The present invention is additionally provided with an endoscope fixed ring 113, and the fixed ring 113 of endoscope is the double-deck ring body, and the double-deck ring body has Inner ring 1132 and outer ring 1131, wherein 1131 positioning installation of outer ring is in circumferential member annular groove 112 to stationary annular at limit Position, the bottom end of the inner ring 1132 of the bilayer ring is resisted against the top of core bar 12；In addition, outside 111 inner wall of circumferential member and core bar 12 Cooperation is limited between week, is equipped with a plurality of strip bulge 1111 and a circle blocker ring 1112 in the present embodiment, on the inside of circumferential member, Core bar front end periphery is equipped with and is recessed with annular bank 1201 and a plurality of strip-shaped clamp groove 1202, and strip bulge 1111 is fastened on bar shaped card Slot 1202, blocker ring 1112 are fastened on annular bank 1201, realize that the limit between core bar and pedestal cooperates with this.Cutting tip 13 For puncturing abdominal cavity, the shape of cutting tip can be blunt end, or as shown in Figure 1, the shape of cutting tip is flat duckbill, Using imitative biology design principle, in actual surgery operating process, avoid puncturing physiological tissue, no bleeding hair It is raw.

Protruding several registration arm 1203 on front side of the periphery of core bar, registration arm have bending part 1205 and hook body segment 1206, the bending part 1205 of 111 positioning installation of circumferential member of pedestal in core bar registration arm 1203；

As shown in Figure 4 and Figure 5, puncture cannula has hollow casing main body 31 and the expansion positioned at 31 proximal end of casing main body Large cylinder 32 is expanding mistake between cylinder 32 and casing main body 32 as shown, the distal end of casing main body 31 has angle 3101 It crosses and is extended with vertebra type part 33, the outer wall for expanding cylinder 32 forms the seal groove 3201 of a circle, is equipped in the seal groove 3201 For sealing the sealing ring 3202 of cooperation, sealing ring 3202, which is used to seal with lower cover inner wall, to be cooperated；

Seal assembly 2 includes upper cover 21, lower cover 22, sealing valve 23, neck bush 25 and air shuttle valve 26:

Upper cover has first annular part 2101, and the top 2102 of first annular part 2101 and the bottom of pedestal flat-tope structure are supported It leans on, and the top perimeter of its bottom end periphery 2103 and lower cover 22 is against (referring to Fig. 2), 2101 central area of annular element, one bodily form At circumferential wall 2104 limit first through hole 2105, form transition portion between the top 2102 of annular element and circumferential wall 2104 2106, upper cover is equipped with periphery wall 2108 in the outer side wall of circumferential wall 2104, and the top 2102 of first annular part 2101 is equipped with hanging hole 2107,1206 hook of hook body segment of 12 registration arm of core bar is located in the hanging hole 2107 that upper cover periphery opens up；

Lower cover 22 has cylindrical wall 2201, offers gas injection valve 2202, lower cover cylindrical wall court in the outer wall of cylindrical wall 2201 Multiple locating rods 2203 are protruded out to upper cover direction from its inside, and are equipped in the first annular part 2102 of upper cover towards lower cover direction Multiple location holes 2109, lower cover inside puts in the location hole 2109 of upper cover towards the locating rod 2202 of upper stretching, to realize upper cover With lower cover strong fix, intracavitary integrally formed cylinders with small diameter 2206 and major diameter cylinder in the cylindrical wall of lower cover limits The top of body 2207, cylinders with small diameter forms step 2205.Inner circumferential by sealing ring 3202 large-diameter cylinder body 2207 with wear Pierce the outer wall sealing cooperation that casing expands cylinder 32；

Sealing valve 23, with the first cylindrical wall 2301 and with the first cylinder wall 2301 be integrally formed the first taper Wall 2302, first cylindrical wall and the first tapered wall are formed using soft elastic material (such as rubber material), first cylindrical wall With third opening 2303, the first vertebra shape wall has the 4th opening 2306, and the diameter of the 4th opening 2306 is less than puncturing lever core bar 12 diameter；When puncturing lever core bar 12 is fitted into puncture cannula, original place is forced in the 4th opening 2306 of closed state It separates, so that the 4th 2306 antelabium of opening and 12 outer wall of puncturing lever core bar, which are in close contact, realizes sealing cooperation；The top of sealing valve Flange radially outward forms annular groove 2305, the ring that the bottom end positioning installation of upper cover periphery wall 2108 is formed on sealing valve top In connected in star 2305；In the present embodiment, sealing valve is made using rubber sheet, has abandoned existing puncture outfit sealing valve by more The design of plate sheet composition, since sealing valve can be with the big freedom in minor affairs of surgical instrument outer diameter by the aperture at rubber material center Transformation, and be fitted close with surgical instrument outer wall, prevent gas in surgical procedure from escaping from fit clearance.

Neck bush 25 uses hard material to be formed as shown in fig. 6, the neck bush 25 is located in sealing valve 23, tool The second tapered wall 2502 for having the second cylindrical wall 2501 and being integrally formed with the second cylinder wall 2501, second cylindrical wall 2501 With the second tapered wall 2502 respectively with 2302 palette of the first cylindrical wall 2301 and the first tapered wall, second cylindrical wall 2501 With the 5th opening 2505, the second vertebra shape wall has the 6th opening 2506, and the 6th opening 2506 is located at the inside of sealing valve 23 and simultaneously Without departing from 2306 setting of the 4th opening；Second vertebra shape wall 2502 is circumferential to be equipped with multiple proximally will distally prolong along tapered wall wall body The notch 2503 stretched, so that the second vertebra shape wall 2502 forms discrete more valve structures, i.e., more valve structures constitute the second tapered wall, As shown in fig. 6, more valve structures are made of the fanning strip 25021 that multiple discrete rings are set, which may be bar shaped, circle Or the other shapes such as blade are replaced.In this way, being initially entered interior when puncturing lever or other surgical instruments enter seal assembly The sealing valve insertion made by soft elastic material can be stretched by bushing by more valve structures of its bottom；Liner simultaneously The use of set eliminates the defect that surgical instrument sharp in surgical procedure punctures sealing valve；In addition, when puncturing lever or other When taking out when surgical instrument enters seal assembly from seal assembly, the presence of neck bush prevents the sealing of soft elastic material production Valve is carried over or routs up.

Neck bush 25 is maintained at the inner wall of sealing valve 23, is equipped with a ring barrier 2507, sealing valve in 25 outer wall of neck bush Inner wall be equipped with the mobile limit bank 2307 of limitation neck bush, barrier 2507 be fastened in limit bank 2307 realize neck bush with The limit of sealing valve cooperates, the inclined face 2110 in the bottom surface of the circumferential wall of upper cover, the top surface of the second cylindrical wall 2501 of neck bush With the inclined-plane 2508 tangent with the bottom surface of circumferential wall.

Air shuttle valve 26, be positioned at the outside of sealing valve 23 radially and with the 26 of sealing valve between form cavity 236, tool Have third cylindrical wall 2601 and formed joint-cutting distal portions 2602, in the present embodiment, distal portions 2602 have four A corner forms the cross crotch 2603 of bottom surface, and wherein distal portions are made of soft elastic material, former when there is puncturing lever to pass through Cross crotch 2603 in the closed state is forced to strut, and struts the cross crotch of mouth due to being elastic material, with puncturing lever Outer wall sealing cooperation.26 third cylindrical wall of air shuttle valve, 2601 top forms annular periphery 2605, the top surface of annular periphery and annular The bottom end of groove 2305 sets that there are four mounting holes 2606 against, the annular periphery 2605 towards outside, and outside the third cylindrical wall The first limit bank 2607 and the second limit bank 2608, the first limit bank 2607 and the second limit are sequentially formed in all axial directions from top to bottom Position bank 2608 and the first limited step 3203 and the second limited step 3205 the limit cooperation (reference for expanding formation on the inside of cylinder Fig. 5)；And third cylindrical wall periphery is recessed with card slot 2609 in the downside of annular periphery 2605；

Step 2205 is formed on the top of lower cover cylinders with small diameter 2206, which has annular table and vertical wall, Nose bar 2204 is distributed in annular table, in the mounting hole 2606 that the top end flange which is inserted into air shuttle valve is formed, vertically Wall is arranged in card slot 2609, as shown in figure 5, card slot 2605 has rib, in this way, air shuttle valve realizes that limit is matched with lower cover It closes.

The working principle of puncture outfit provided in this embodiment are as follows:

After surgical instrument enters puncture outfit, surgical instrument first touches neck bush 25, and neck bush 25 opens sealing valve again 23.It is performed the operation again by the opening of sealing valve 23 later；Design can be effectively prevented sharp instrument and puncture sealing valve in this way. After instrument is extracted, the neck bush 25 of hard material can be effectively prevented sealing valve and be carried over；Air shuttle valve 26 is one normally closed Valve body is usually applied in combination with sealing valve 23；When no surgical instrument, which enters puncture outfit, is performed the operation, puncture outfit relies on air shuttle valve 26 keep pneumoperitoneum required for performing the operation.And when thering is surgical instrument to enter puncture outfit to be performed the operation, since air shuttle valve 26 can be by device Tool opens, and can not depend merely on an air shuttle valve 26 and keep pneumoperitoneum.At this point, the 4th opening 2306 due to 23 lower end of sealing valve is less than hand The outer diameter of art instrument is shown in that the 4th opening 2306 tightly surrounds the outer surface of instrument, to form a confined space.

Embodiment 2

As shown in Figures 1 to 3, puncturing lever provided by the invention is additionally provided with handle 115, and doctor is facilitated to exert a force, and avoids blocking into As equipment etc..The grip body is recessed arc curve, and doctor is facilitated to apply dynamics, and aspect doctor observation and operation behaviour Make.

Embodiment 3

Puncture cannula is combined with lower cover by a kind of realization of clamping structure:

There are two symmetrical or asymmetricly elastic card fastener 35, the elastic cards towards outside distribution for the expansion cylinder 32 Fastener 35 includes elastic arm 3501 and clamping portion 3502, and clamping portion has protrusion 3503, and as preferable embodiment, Elastic arm 3501 has antifriction portion, facilitates operator to press elastic arm, avoids skidding.

It is equipped with caulking groove 2208 in the outer wall of lower cover cylindrical wall, caulking groove 2208 is extended axially downward to cylindrical wall bottom edge, and axis To having abutment face 2211 upwards, inside cylinder wall is equipped with blocking portion, presses elastic arm 3501, then the elastic arm of elastic card fastener 3501 are embedded in the caulking groove 2208, and the blocking portion limit that clamping portion 3502 is formed by protrusion 3503 with cylindrical wall inner wall is matched It closes, in the present embodiment, protrusion is wedge-shaped fixture block, and wedge-shaped fixture block left-hand thread is in lower cover；In operation, if you need to puncture cannula under Lid separation, only needs elastic arm 3501, and both achievable wedge-shaped fixture block was detached from；Meanwhile casing and lower cover are carried out mutually by sealing ring Between sealing.

Although being shown in figure and having combined several exemplary embodiments especially above and retouching completely in detail Theme disclosed embodiment described herein is stated, but those of ordinary skill in the art are not departing from religion set forth herein Show, under principle and concept, many modifications, change and omission are possible.Therefore, the proper range of disclosed invention should only by The most broad interpretation of appended claims determines to cover all such modifications, change and omission.

Claims (11)

1. structure improved puncture outfit, which includes puncturing lever (1), puncture cannula (3) and seal assembly (2), is punctured Bar includes pedestal (11), cutting tip (13) and the core bar (12) between pedestal and cutting tip, and puncture cannula includes casing master Body (31) and expansion cylinder (32) positioned at casing main body proximal end；It is characterized by: seal assembly includes:

Upper cover (21), upper cover (21) are located in the lower end of puncturing lever pedestal (11), with first annular part (2101), the first ring Shape part central area limits first through hole (2105) by the circumferential wall (2104) formed on the inside of it；

Sealing valve (23), with the first cylindrical wall (2301) and the first tapered wall being arranged on the downside of the first cylinder wall (2302), first cylindrical wall (2301) and the first tapered wall (2302) are formed using soft elastic material, first cylindrical wall It is open (2303) with third, the first vertebra shape wall has the 4th opening (2306), and the diameter of the 4th opening (2306), which is less than, to be punctured The diameter of bar core bar (12)；

Neck bush (25), the neck bush (25) are located in sealing valve (23), and hard material is used to be formed, and have second Shape wall (2501) and the second tapered wall (2502) being arranged on the downside of the second cylinder wall, second cylindrical wall (2501) and second Tapered wall (2502) respectively with the first cylindrical wall (2301) and the first tapered wall (2302) palette, second cylindrical wall (2501) there is the 5th opening (2505), the second vertebra shape wall has the 6th opening (2506), and the 6th opening (2506) is no more than the Four openings (2306)；Neck bush (25) and sealing valve (23) limit cooperate

Air shuttle valve (26) has third cylindrical wall (2601) and is located in third cylindrical wall (2601) bottom and forms joint-cutting (2603) distal portions (2602), distal portions (2602) are made of soft elastic material, and the joint-cutting is in closed state, When there is puncturing lever to pass through, original place is forced to strut in the joint-cutting (2603) of closed state, and fits closely with puncturing lever outer wall；

Lower cover (22) has cylindrical wall (2201), and the outer wall of the cylindrical wall is equipped with gas injection valve (2202), and the upper end of lower cover is under End is detachably connected with the bellend of upper cover and puncture cannula respectively, a seal chamber is limited with this, in the seal chamber Interior storage sealing valve (23), neck bush (25) and air shuttle valve (26).

2. structure improved puncture outfit according to claim 1, it is characterised in that: the first annular part of upper cover is convexly equipped with multiple Location hole (2109), lower cover cylindrical wall protrude out multiple locating rods (2203), and locating rod (2203) is plugged in location hole (2109) It realizes and is sealingly engaged between upper cover (21) and lower cover (22).

3. structure improved puncture outfit according to claim 1, it is characterised in that: upper cover (21) is in circumferential wall (2104) Outer side wall is equipped with periphery wall (2108), and the top of sealing valve forms annular groove (2305), the bottom end positioning of periphery wall (2108) It is placed in the annular groove (2305).

4. structure improved puncture outfit according to claim 1, it is characterised in that: second tapered wall forms discrete More valve structures.

5. structure improved puncture outfit according to claim 1, it is characterised in that: air shuttle valve third cylindrical wall top is formed Annular periphery (2605), the annular periphery are equipped with multiple mounting holes (2606), form cylinders with small diameter in the cylindrical wall of lower cover (2206) and large-diameter cylinder body (2207), the top of cylinders with small diameter (2206) form step (2205), the step (2205) Nose bar (2204) are distributed with, which is inserted into mounting hole (2606), the third cylindrical wall (2601) and step (2205) limit cooperation.

6. structure improved puncture outfit according to claim 5, it is characterised in that: in large-diameter cylinder body (2207) and puncture Casing, which expands, realizes palette by sealing ring (3202) between cylinder (32).

7. structure improved puncture outfit according to claim 1, it is characterised in that: the pedestal (11) of puncturing lever has flat-top Structure, puncturing lever pedestal and core bar (12) limit cooperate, and core bar (12) and upper cover (21) limit cooperate.

8. structure improved puncture outfit according to claim 1, it is characterised in that: neck bush (25) and sealing valve (23) are logical Cross and realize limit cooperation with flowering structure: neck bush (25) outer wall is equipped with barrier (2507), and the inner wall of sealing valve is equipped with and blocking The mobile limit bank (2307) of wall (2507) limit cooperation limitation neck bush.

9. structure improved puncture outfit described in any one according to claim 1~8, it is characterised in that: the softer, elastic Material is rubber material.

10. puncture outfit easy to disassemble, it is characterised in that: the puncture outfit includes puncturing lever (1), puncture cannula (3) and sealing Component (2), puncturing lever include pedestal (11), cutting tip (13) and the core bar (12) between pedestal and cutting tip, puncture set Pipe includes casing main body (31) and the expansion cylinder (32) positioned at casing main body proximal end；Seal assembly (2) includes upper cover (21) With lower cover (22), wherein lower cover (22) is detachably connected with cylinder is expanded.

11. puncture outfit easy to disassemble according to claim 10, it is characterised in that: the expansion cylinder (32) is towards outside At least two symmetrical or elastic card fasteners (35) asymmetricly are distributed with, which includes elastic arm (3501) and clamping portion (3502), clamping portion have protrusion (3503), are equipped with caulking groove (2208) in the outer wall of lower cover cylindrical wall, Caulking groove (2208) is extended axially downward to cylindrical wall bottom edge, and has abutment face (2211) axially upwards, and inside cylinder wall is equipped with The blocking portion that limitation protrusion is deviate from downwards, presses elastic arm (3501), then the elastic arm (3501) of elastic card fastener is embedded in The caulking groove (2208), clamping portion (3502) are limited by the blocking portion that protrusion (3503) and cylindrical wall inner wall are formed to be cooperated.