CN207949873U - A kind of abdominal cavity puncture outfit puncture needle and apply its abdominal cavity puncture outfit - Google Patents

Abstract

The utility model discloses a kind of abdominal cavity puncture outfit puncture needle and its abdominal cavity puncture outfit is applied, belongs to medical puncturing instrument field.The puncture needle of the utility model, including core bar, puncturing head and core rod seat are punctured, the lance wall there are two arc is set on puncturing head, two lance walls are anteriorly gradually reduced to form tip from back of head is punctured, and two lance walls are crossed to form side edge in both sides；The top of core rod seat is equipped with instrument channel mouth, punctures core bar inner hollow, and instrument channel mouth is communicated with core bar is punctured, and the instrument being additionally provided on core rod seat for fixing instrument fixes lock；Being additionally provided on core rod seat takes needle to buckle, and is located at the periphery for taking needle to buckle on core rod seat and is additionally provided with reinforcement convex ribs.The puncture needle of the utility model uses " spearhead " formula structure puncturing head, is not only simple in structure, and convenient for making, and is conducive to reduce resistance when lancing motion advances, forward is sharp keen, and penetration power is strong；Have many advantages, such as that structural strength is high, skid resistance is good, safe operation is reliable.

Description

A kind of abdominal cavity puncture outfit puncture needle and apply its abdominal cavity puncture outfit

Technical field

The utility model is related to a kind of medical puncturing instruments, more specifically to a kind of abdominal cavity puncture outfit puncture needle And apply its abdominal cavity puncture outfit.

Background technology

Abdominal cavity puncture outfit is common surgical instrument in abdominocentesis operation, is mainly used for establishing people in laparoscopic surgery Work pneumoperitoneum and instrument channel.In laparoscopic surgery, artificial pneumoperitoneum is the key that successful surgery, needs first to establish people before surgery Work pneumoperitoneum, so that peritoneal wall is detached with internal organs, in order to surgical procedure.Existing abdominal cavity puncture outfit is mainly by puncture needle, sealing Valve and puncture sheath three parts composition, when in use, generally first by puncture needle, sealing valve and puncture sheath three parts combination one It rises, will puncture sheath using puncture needle is punctured to from human skin intraperitoneal, and establishes people by puncturing the gas injection valve in sheath Work pneumoperitoneum；After taking out puncture needle, operation path is constituted by sealing valve and puncture sheath two parts, surgical instrument is passed through into sealing It valve and punctures sheath and is inserted into and intraperitoneal can carry out laparoscopic surgery.In the course of surgery, surgical instrument is matched with sealing valve sealing Close, ensure that pneumoperitoneum will not gas leakage and influence surgical procedure, need take out lesion tissue when, by sealing valve from puncture sheath on It removes, takes object valve to realize sealing in sheath using puncturing, passed through using instruments such as biopsy forceps and object valve is taken to realize that lesion tissue takes Go out.

When applying centesis using puncture outfit, puncture needle plays the role of that sheath importing will be punctured.When doctor is in patient's body After cutting an osculum on body, skin is penetrated by puncture needle front end tip and is inserted into tissue, sheath insertion is punctured to reach The purpose of tissue.China Patent No. ZL02121621.5, authorized announcement date are on December 21st, 2005, and invention and created name is： Trocar with enhancing plugger axis, this application are related to a kind of puncture outfit puncture needle, and the tip of puncture needle includes from wearing Saturating outwardly extending first and second separator of tip, the first and second separators are respectively provided with outside usually straight, straight line The surface of edge, each in the first and second separators are longitudinally extended from proximate base to penetrating the blunt nosed of tip, and first Spaced about 180 ° with the second separator, it is all located at blunt nosed proximal end.In this application case, the first and second separator conduct Blade uses, and coordinates the tip of taper to realize puncture effect, but the puncture needle making of this structure is more troublesome, and first and second Separator is relatively thin, and intensity is relatively low, and penetration Resistance of the tip of this structure in piercing process is also larger, simple operation Property is affected.

Invention content

1. utility model technical problems to be solved

The purpose of the utility model is to overcome the puncture needle of existing abdominal cavity puncture outfit, there are complicated, penetration Resistance is big The deficiencies of, a kind of abdominal cavity puncture outfit puncture needle is provided and applies its abdominal cavity puncture outfit, using the technical side of the utility model The puncturing head of case, puncture needle uses " spearhead " formula structure, and not only structure is simpler, convenient for making, and is conducive to lancing motion Resistance is reduced when advance, effectively reduces the normal pressure for acting on the reaction force on puncturing head when puncture, and forward is sharp keen, penetrates Power is strong；Also have many advantages, such as that structural strength is high, skid resistance is good, safe operation is reliable simultaneously.

2. technical solution

In order to achieve the above objectives, technical solution provided by the utility model is：

A kind of abdominal cavity puncture outfit puncture needle of the utility model, including puncture core bar, be respectively arranged on puncture core bar both ends Puncturing head and core rod seat, set the lance wall there are two arc on the puncturing head, two lance walls are from puncturing back of head anteriorly It is gradually reduced to form tip, two lance walls are crossed to form side edge in both sides.

Further, the top of the core rod seat is equipped with instrument channel mouth, the puncture core bar inner hollow, institute The instrument channel mouth stated is communicated with core bar is punctured, and the instrument being additionally provided on core rod seat for fixing instrument fixes lock.

Further, the intilted slope imported convenient for instrument is additionally provided at the instrument channel mouth, it is described Slope inclination angle be 5~60 °.

Further, the inclination angle on the slope is 15~45 °.

Further, be additionally provided on the core rod seat takes needle to buckle for what is connected or dismantle, and core rod seat is upper It is additionally provided with reinforcement convex ribs in the periphery for taking needle to buckle.

A kind of abdominal cavity puncture outfit with above-mentioned puncture needle of the utility model.

3. advantageous effect

It is had the advantages that compared with existing known technology using technical solution provided by the utility model：

(1) a kind of abdominal cavity puncture outfit puncture needle of the utility model, sets the lance wall there are two arc on puncturing head, and two A lance wall is anteriorly gradually reduced to form tip from back of head is punctured, and two lance walls are crossed to form side edge in both sides, forms " lance Head " formula structure, not only structure is simpler, convenient for making, and is conducive to reduce resistance when lancing motion advances, effectively reduces and wear The normal pressure of the reaction force on puncturing head is acted on when thorn, forward is sharp keen, and penetration power is strong；

(2) top of a kind of abdominal cavity puncture outfit puncture needle of the utility model, core rod seat is equipped with instrument channel mouth, wears Core bar inner hollow is pierced, instrument channel mouth is communicated with core bar is punctured, and the instrument being additionally provided on core rod seat for fixing instrument is solid Lock button can easily place camera shooting tool, in conjunction with the shape of puncturing head rule, easily facilitate through camera shooting tool clearly Tissues observed, to effective protection organ-tissue；

(3) a kind of abdominal cavity puncture outfit puncture needle of the utility model is additionally provided at instrument channel mouth and is led convenient for instrument Camera shooting instrument can more easily be put into and puncture in core bar by the intilted slope entered, more convenient to use, and more Adding operator centre of the palm when convenient for puncturing to grasp, increasing the convenience of operation, reduces puncture risks；

(4) a kind of abdominal cavity puncture outfit puncture needle of the utility model is additionally provided with for connecting or dismantling on core rod seat Take needle to buckle, and on core rod seat be located at take needle buckle periphery be additionally provided with reinforcement convex ribs, increase the circumferential direction of puncture needle component There is the problem of shell breakage when avoiding taking-up puncture needle in operation in anti-skidding and structural strength.

Description of the drawings

Fig. 1 is a kind of overall structure diagram of abdominal cavity puncture outfit of the utility model；

Fig. 2 is a kind of fractionation structural representation of abdominal cavity puncture outfit of the utility model；

Fig. 3 is a kind of schematic cross-sectional view of abdominal cavity puncture outfit of the utility model；

Fig. 4 is the structural schematic diagram of the puncture needle component in the utility model；

Fig. 5 is the structural schematic diagram of the puncturing head in the utility model；

Fig. 6 is the structural schematic diagram of the sealing valve module in the utility model；

Fig. 7 is the configuration schematic diagram of the sealing valve module in the utility model；

Fig. 8 is the schematic cross-sectional view of the sealing valve module in the utility model；

Fig. 9 is the structural schematic diagram of an angle of the air shuttle valve in the utility model；

Figure 10 is the structural schematic diagram of another angle of the air shuttle valve in the utility model；

Figure 11 is the schematic cross-sectional view of the air shuttle valve in the utility model；

Figure 12 is the attachment structure schematic diagram of the movable guard and air shuttle valve in the utility model；

Figure 13 is the structural schematic diagram of the sheath tube assembly in the utility model；

Figure 14 is the schematic cross-sectional view of the sheath tube assembly in the utility model；

Figure 15 is the structural schematic diagram of the angle for taking object valve in the utility model；

Figure 16 is the structural schematic diagram of another angle for taking object valve in the utility model.

Label declaration in schematic diagram：

1, puncture needle component；1-1, core bar is punctured；1-2, puncturing head；1-2-1, lance wall；1-2-2, side edge；1-2-3, point End；1-3, core rod seat；1-4, instrument channel mouth；1-5, instrument fix lock；1-6, needle is taken to buckle；1-7, reinforce convex ribs；

2, valve module is sealed；2-1, upper cover；2-1-1, concave inward structure；2-2, lower cover；2-2-1, rolling surface；2-3, choke Valve；2-3-1, valve wall；2-3-2, elastic shirt rim；2-3-3, opening；2-3-4, gauffer；2-3-5, vessel；2-3-6, connecting hole；2- 3-7, sealing lip；2-3-8, small convex rib；2-3-9, locating ring；2-4, protection leaf；2-5, movable guard；2-6, A valve collar；2-7, B valve Ring；

3, sheath tube assembly；3-1, sheath；3-2, sheath tube socket；3-2-1, operating handle；3-2-2, threading hole；3-3, object is taken Valve；3-3-1, flap；3-3-2, valve port；3-3-3, installation side；3-3-4, inner wall reinforcing rib；3-3-5, outer wall reinforcing rib；3-3- 6, locating piece；3-4, gas injection valve；3-5, anti-skid chequer；3-6, pressure ring.

Specific implementation mode

To further appreciate that the content of the utility model, the utility model is described in detail in conjunction with the accompanying drawings and embodiments.

Embodiment

In conjunction with shown in Fig. 1, Fig. 2 and Fig. 3, a kind of abdominal cavity puncture outfit of the present embodiment, including can fit together successively Puncture needle component 1, sealing valve module 2 and sheath tube assembly 3, puncture needle component 1, sealing valve module 2 and 3 three of sheath tube assembly Connecting assembling structure is similar with existing puncture outfit structure, such as buckle structure can be used in puncture needle component 1 and sealing valve module 2 Connection, sealing valve module 2 and sheath tube assembly 3 can be used rotation snap-in structure and connect.In puncture outfit in use, first wearing abdominal cavity Thorn device is assembled into state shown in Fig. 1, that is, is worn successively after sealing valve module 2 and the assembling of sheath tube assembly 3, then by puncture needle component 1 Sealing valve module 2 and sheath tube assembly 3 are crossed, sheath tube assembly 3 is inserted into tissue under the guiding of puncture needle component 1, establishes pneumoperitoneum； Then puncture needle component 1 is extracted out, relies at this time in sheath tube assembly 3 and object valve 3-3 is taken to realize sealing, utilizes surgical instrument later It is operated across sealing valve module 2 and sheath tube assembly 3, at this time by the air shuttle valve 2-3 and instrument in sealing valve module 2 Side wall forms sealing；When needing to take out the tissue of operation excision, sealing valve module 2 is removed at this time, utilizes the devices such as biopsy forceps Tool passes through the taking-up for taking object valve 3-3 to realize resection organization.

Wherein, as shown in Figure 3 and Figure 4, puncture needle component 1 includes puncturing core bar 1-1 and set on the one end puncture core bar 1-1 It is different to puncture header structure from existing cone by puncturing head 1-2, set on the puncturing head 1-2 in the present embodiment there are two arc Lance wall 1-2-1 (as shown in Figure 5), two lance wall 1-2-1 are anteriorly gradually reduced to form tip 1-2-3 from the rear portions puncturing head 1-2, Two lance wall 1-2-1 are crossed to form side edge 1-2-2 in both sides.Puncturing head 1-2 in the present embodiment is similar to " spearhead " formula structure, Both sides are launched into the lance leaf with sword, and are gathered into sharp keen sharp cutting edge of a knife or a sword forward, keep entire puncturing head 1-2 streamlined or flat-sided shape knot Structure reduces resistance when advancing in favor of lancing motion, effectively reduces the normal direction that the reaction force on puncturing head is acted on when puncture Pressure, forward is sharp keen, and penetration power is strong, and structure is simpler, convenient for making.In addition, puncture needle component 1 further includes being set to wear The core rod seat 1-3 far from the one end puncturing head 1-2 on core bar 1-1 is pierced, core bar 1-1 inner hollows is punctured, is set at the top of core rod seat 1-3 There is the instrument channel mouth 1-4 communicated with puncture core bar 1-1, and core rod seat 1-3 is equipped with the instrument fixing lock for fixing instrument 1-5 is detained, is additionally provided on core rod seat 1-3 for taking needle to buckle 1-6 with what sealing valve module 2 connected or separated.In the present embodiment, The intilted slope imported convenient for instrument is additionally provided at instrument channel mouth 1-4, the inclination angle on slope is 5~60 ° preferable, with 15 ~45 ° of gradients are best, in order to which instrument imports；The tops core rod seat 1-3 are mellow and full, and the operator centre of the palm grasps when convenient for puncturing, and increase The convenience of operation reduces puncture risks.It is punctured in core bar 1-1 in use, camera shooting tool is stretched into from instrument channel mouth 1-4, After the tool of camera shooting reaches setting position, fixes lock 1-5 using instrument and fixed tool location is imaged, can easily be placed Camera shooting tool is easily facilitated through camera shooting tool clearly tissues observed, in conjunction with the shape of puncturing head 1-2 rules to wear Effective protection organ-tissue when thorn；It takes needle to buckle 1-6 by pressing puncture needle component 1 can be removed from sealing valve module 2. It should be appreciated that when needing to puncture using the cooperation of camera shooting tool, puncturing head 1-2 is transparent material.In addition, in performing the operation in order to prevent There is the problem of shell breakage when taking out puncture needle, it is convex positioned at taking the periphery of needle buckle 1-6 to be additionally provided with reinforcement on core rod seat 1-3 Muscle 1-7, increase puncture needle component 1 circumferential direction is anti-skidding and structural strength, while the appearance of the core rod seat 1-3 also made has higher Identification.As for instrument fix lock 1-5 and take needle buckle 1-6 structural principle similarly to the prior art, herein just no longer It is described in detail.

As shown in Fig. 6, Fig. 7, Fig. 8 and Fig. 9, sealing valve module 2 includes the air shuttle valve 2-3, air shuttle valve 2-3 being set in valve body The valve wall 2-3-1 in the horn-like structure of one of opening 2-3-3 is equipped with including center, the valve body of sealing valve module 2 includes upper cover 2-1 and lower cover 2-2, air shuttle valve 2-3 are clamped in by the periphery of the waveform elasticity shirt rim 2-3-2 set on the peripheries valve wall 2-3-1 Between upper cover 2-1 and lower cover 2-2, valve wall 2-3-1 and elasticity shirt rim 2-3-2 are an integral molding structure preferably, and air shuttle valve 2-3 Material is that rubber or silica gel are best, provides valve wall 2-3-1 mechanical supports using waveform elasticity shirt rim 2-3-2, makes valve wall 2-3-1 It is suspended in the center of upper cover 2-1 and lower cover 2-2, contactless with upper cover 2-1 and lower cover 2-2, no friction makes air shuttle valve 2-3 have Certain axial movement space.Most of all, as shown in figure 11, the gradient of valve wall 2-3-1 is by valve wall 2-3-1 central openings 2- 3-3 is gradually reduced to the peripheries valve wall 2-3-1, i.e. valve wall 2-3-1 is from valve wall 2-3-1 central openings 2-3-3 to the peripheries valve wall 2-3-1 Moulding gradually delay, the gradient is most slow at maximum gauge, and the gradient is most precipitous at minimum diameter.Experiment shows valve wall 2-3-1 central openings The gradient near the sealing lip 2-3-7 similar to ring structure at 2-3-3 is more precipitous, and sealing lip 2-3-7 resists center method Line Direction distortion is more notable, and sealing lip 2-3-7 is more not easy to turn over；Compared with existing inverted conical valve wall construction, effectively It improves air shuttle valve 2-3 and the problem of sealing lip 2-3-7 is turned over occurs when in use.It is known that when equipment operator is using In the process, sealing lip 2-3-7 turns over the frictional force that can increase and be passed through instrument, after sealing lip 2-3-7 is turned over, makes air shuttle valve Deformability original 2-3 declines, and central opening 2-3-3 becomes smaller, and the corner angle for being easily sewn the instruments such as nail, haemostatic clamp hook, Influence very much instrument usability.A kind of abdominal cavity puncture outfit of the present embodiment, by being improved to air shuttle valve 2-3 structures, not only Keep the sealing performance of air shuttle valve 2-3 more preferable, and significantly improve the deformability that air shuttle valve 2-3 resists centre normal direction, Make air shuttle valve 2-3 be not easy to turn over, greatly reduces the gas leakage risk of air shuttle valve 2-3；And due to effectively preventing air shuttle valve 2-3 It turns up, therefore reduces surgical instrument angular structures and scratch the backs air shuttle valve 2-3, avoid air shuttle valve 2-3 cracking failures, ensure The sealing performance of abdominal cavity puncture outfit.

As shown in Figure 9 and Figure 10, in order to further prevent air shuttle valve 2-3 to turn up, in the present embodiment, on valve wall 2-3-1 It is evenly distributed with several gauffer 2-3-4 to extend from the valve centers wall 2-3-1 to periphery, it is preferable that gauffer 2-3-4 is by being set to valve (" sunny side " can be referred to as on the inside of valve wall 2-3-1) on the inside of wall 2-3-1 convex ribs and on the outside of valve wall 2-3-1 (outside valve wall 2-3-1 Side can be referred to as " back ") corresponding with above-mentioned convex ribs location and shape groove composition.It is further preferred that above-mentioned gauffer 2-3-4 uses helical structure, and is macroscopically constituting three-dimensional Reducing screw line, constitutes the convex ribs and groove point of gauffer 2-3-4 It is not attached on the sunny side and the back of valve wall 2-3-1, the radius of spin is incremented by by periphery to center by equation, helix equation：

x²+y²=r²；

Z=k [2 π+arctan (y/x)]；

Wherein, r is the radius of spin；K2 π are the distances risen in z-axis that often rotates a circle；K, r are constant.

The design of above-mentioned spiral shape gauffer 2-3-4 is rubbed based on generalized Hooke law, three-dimensional Reducing screw line and solid The modern theory of wiping fully considers the complexity of air shuttle valve 2-3 mechanical properties in use, utilizes three-dimensional Reducing screw line Rule change and combine generalized Hooke law, design, which has analyzed one kind, can be in frequently by frictional force, extruding force, stretching Power remains to preferably reduce air shuttle valve 2-3 deformation amplitudes, keeps the had mechanical property of original-shape.In use, device Tool is entered by the horn mouth of air shuttle valve 2-3, and during entering to sealing lip 2-3-7, sunny side convex ribs provide smaller contact surface, subtract It is small to be passed through instrument frictional force；In addition to this, during instrument is passed through, air shuttle valve 2-3 horn mouth internal diameters become larger, and folded structure exists It is capable of providing sufficient material supplement in air shuttle valve 2-3 internal diameter deformation processes, effectively reduces the risk of air shuttle valve breakage.

In addition, referring to shown in Figure 10 and Figure 11, the sealing lip at valve wall 2-3-1 central openings 2-3-3 in the present embodiment 2-3-7 has horn-like Eversible structure, and several are evenly distributed on the horn-like Eversible structure of sealing lip 2-3-7 along sealing The small convex rib 2-3-8 that lip 2-3-7 central axis extend.It is known that being influenced by instrument displacement, sealing lip 2-3-7 " back " Friction must be generated with device contacts, will switch to static friction when frictional force exceeds dynamic friction range, lead to sealing lip 2-3-7 It turns over, influences air shuttle valve 2-3 performances.And the sealing lip 2-3-7 structures in the present embodiment, valve wall 2-3-1 central openings 2- The horn-like Eversible structure of 3-3, towards on the contrary, by bell-mouth structure of air, reduces close with air shuttle valve 2-3 entirety flared structure Lip 2-3-7 and instrument interface normal pressure are sealed, while being played on " back " below major seal faces in sealing lip 2-3-7, I.e. on the horn-like Eversible structure of sealing lip 2-3-7, equally distributed several are had devised along sealing lip 2-3-7 central axis The characteristics of small convex rib 2-3-8 of extension, small convex rib 2-3-8 are preferably provided with 15~25, small convex rib 2-3-8 is：It is opposite The height on the horn-like surface of sealing lip 2-3-7 reduces, final opposing seal with the radial dimension of reductions of sealing lip 2-3-7 The height on the surfaces lip 2-3-7 is zero, is designed by small convex rib 2-3-8, and sealing lip 2-3-7 is further reduced when instrument is extracted out Contact area between instrument reduces the frictional resistance of instrument extraction, further reduces the possibility of turning up of air shuttle valve.

Shown in hookup 7 and Fig. 8, it is additionally provided on the inside of the air shuttle valve 2-3 in the present embodiment and is interweaved by several protection leaf 2-4 Made of be covered in taper protective device on the inside of valve wall 2-3-1, protection leaf 2-4 be 4 preferably, 4 protection leaf 2-4 are mutually handed over The periphery of the tapered structure of paramnesia, protective device is clamped by A valve collar 2-6 and B valve collars 2-7, and is installed on by valve wall 2-3-1 In the vessel 2-3-5 that portion and elasticity shirt rim 2-3-2 are surrounded, A valve collar 2-6 and B valve collars 2-7 is equipped with mutually matched company Connect column and connecting hole, the mating periphery that will protect leaf 2-4 that A valve collars 2-6 and B valve collar 2-7 passes through connecting pole and connecting hole It is fixedly clamped, A valve collars 2-6 and air shuttle valve 2-3 is connected also by connecting pole and connecting hole.Using protection leaf 2-4 to choke Valve 2-3 is played a certain protective role, and the folded structure being arranged on air shuttle valve 2-3, also reduces air shuttle valve 2-3 and top The frictional force for protecting leaf 2-4 ensure that use seals flexible movements between valve module 2 in the process, reduce instrumentation obstruction Sense.In addition, referring to shown in Fig. 6, Fig. 7, Fig. 8 and Figure 12, it is additionally provided on the outside of the air shuttle valve 2-3 in the present embodiment and is located at valve wall On the outside of 2-3-1 and center has the movable guard 2-5 of opening, and the lateral surface of movable guard 2-5 is spherical surface, the lower through-hole of lower cover 2-2 Inner wall can be matched with spherical surface on the outside of movable guard 2-5, it is preferable that can be arranged one week at the lower through-hole inner wall of lower cover 2-2 Dome shape rolling surface 2-2-1, so that movable guard 2-5 can do relative rolling motion on lower cover 2-2；Above-mentioned movable guard 2-5 Diameter be more than the lower parts lower cover 2-2 through-hole diameter, and the opening diameter of movable guard 2-5 be less than the lower parts lower cover 2-2 through-hole it is straight Diameter.Specifically, several connecting poles are equipped on the top of movable guard 2-5, air shuttle valve 2-3 is equipped with to be connected with above-mentioned connecting pole Connecting hole 2-3-6；In order to which movable guard 2-5 and air shuttle valve 2-3 are preferably coaxially positioned, and prevent movable guard 2- during use 5 occur relative dislocation with air shuttle valve 2-3, and a circle locating ring 2-3-9, locating ring 2-3-9 are additionally provided on the outside of air shuttle valve 2-3 Coordinate with the locating ring on movable guard 2-5 and limits.Coordinated using the rolling of movable guard 2-5 and the lower through-hole inner wall of lower cover 2-2, So that air shuttle valve 2-3 is had the function of Universal rotary in sealing valve module 2, is convenient for instrument flexible operating；And air shuttle valve 2-3 The rigid constraint of all directions in use scope is zero, provides extraordinary operability for operator, avoids similar Product occur because break through product limitation caused by air shuttle valve 2-3 seal failures the problem of.Sealing is stretched into order to facilitate instrument It is operated in valve module 2, concave inward structure 2-1-1 is additionally provided at the upper opening of upper cover 2-1, is smoothly led convenient for instrument Enter.

As shown in Fig. 3, Figure 13 and Figure 14, sheath tube assembly 3 includes sheath 3-1, the sheath tube socket 3-2 set on the one end sheath 3-1 It takes object valve 3-3, sheath 3-1 best using integrated formed structure with sheath tube socket 3-2 in sheath tube socket 3-2, ensure that sheath The air-tightness of pipe 3-1；The periphery of sheath 3-1 is additionally provided with anti-skid chequer 3-5, and increasing sheath 3-1 using anti-skid chequer 3-5 punctures through Resistance in journey causes puncture outfit puncture too deep due to affected organ, uses when effectivelying prevent penetrating tissue because resistance reduces suddenly It is more safe and reliable.It is additionally provided with the gas injection valve 3-4 of connection sheath 3-1 on the sheath tube socket 3-2 of sheath tube assembly 3, is convenient for pneumoperitoneum Operation；The both sides of sheath tube socket 3-2 are additionally provided with the operating handle 3-2-1 convenient for holding, and operating handle 3-2-1, which is equipped with, is convenient for line Fixed threading hole 3-2-2, person's holding operation easy to operation, and in order to adapt to different operation needs, provided for operator The method of suture can be used the rigid condition of sheath 3-1 and patient skin surface, improve simple operation.

Shown in Figure 14, Figure 15 and Figure 16, in the present embodiment, object valve 3-3 is taken to use three-clove style in sheath tube assembly 3 Structure for taking object valve compared to duck-beak type, takes the radial passage of object valve further to be increased, and improves and takes out resection organization Convenience reduces difficulty and the time of operation, reduces operation risk；For taking object valve compared to fFour piece type, take object valve 3-3's Structural strength is high, and notch is few, and sealing performance is more preferably.Specifically in the present embodiment, the above-mentioned object valve 3-3 that takes includes three clack valve valve 3- The valve bottom wall that 3-1 includes valve side wall per clack valve valve 3-3-1 and is connected in one with valve side wall, the valve side of three clack valve valve 3-3-1 Wall is connected in one, and the connection edge direction from center to valve side wall extends three are offered on the valve bottom wall of three clack valve valve 3-3-1 The angle of a valve port 3-3-2, three valve port 3-3-2 are 120 ° best.It is equipped on the outside of per clack valve valve 3-3-1 and is prolonged by valve bottom wall The outer wall reinforcing rib 3-3-5 at valve side wall outer rim is extended to, is equipped with positioned at valve bottom wall and valve side wall on the inside of every clack valve valve 3-3-1 Inner wall reinforcing rib 3-3-4, outer wall reinforcing rib 3-3-5 and inner wall reinforcing rib 3-3-4 on connection side ensure that every clack valve valve 3- The stability of 3-1 shapes ensure that and take object valve 3-3 valve port 3-3-2 Natural closures, prevent from rebuilding or renovate outside the valve bottom wall of flap 3-3-1 At seal failure.In addition, outer wall reinforcing rib 3-3-5 extends to valve side wall outer rim by valve bottom wall, improves and take that object valve 3-3's is whole Body intensity increases the stability and reliability of structure, improves rebound degree, increases and takes self seal of object valve 3-3, and inner wall Reinforcing rib 3-3-4 is connected with valve side wall on side set on valve bottom wall, and inner wall reinforcing rib 3-3-4 sizes are smaller, is not take up and is taken object valve 3-3 The space of inside, while will not cause to hook etc. interference to instrumentation, practicability is stronger.In addition, per clack valve valve 3-3-1's Valve side wall inwardly arches upward, the gradient of valve side wall from valve sidewall bottom to valve side wall outer rim at be gradually reduced, contribute to carry in this way The non-deformability and resilience of high flap 3-3-1.For the ease of taking object valve 3-3 to be installed in sheath tube socket 3-2, three clack valve valve 3- It is additionally provided with circle installation side 3-3-3 at the valve side wall outer rim of 3-1, object valve 3-3 can will be taken to be fixed on sheath tube socket by pressure ring 3-6 In 3-2, also, it is additionally provided with locating piece 3-3-6 in the bottom of installation side 3-3-3, convenient for taking the positions object valve 3-3 to fix, structure letter It is single, it is easy for installation.

A kind of abdominal cavity puncture outfit puncture needle of the utility model and apply its abdominal cavity puncture outfit, the puncturing head of puncture needle Using " spearhead " formula structure, not only structure is simpler, convenient for making, and is conducive to reduce resistance when lancing motion advances, have Effect reduces the normal pressure for the reaction force that the when of puncturing acts on puncturing head, and forward is sharp keen, and penetration power is strong；Also there is knot simultaneously The advantages that structure intensity is high, skid resistance is good, safe operation is reliable.

Schematically the utility model and embodiments thereof are described above, description is not limiting, attached drawing Shown in also be the utility model one of embodiment, actual structure is not limited to this.So if this field Those of ordinary skill enlightened by it, without deviating from the purpose of the present invention, without creatively designing Frame mode similar with the technical solution and embodiment, all should belong to the protection range of the utility model.

Claims (6)

1. a kind of abdominal cavity puncture outfit puncture needle, including puncture core bar (1-1), be respectively arranged on wearing for the puncture core bar both ends (1-1) Tartar (1-2) and core rod seat (1-3), it is characterised in that：Lance wall (the 1-2- there are two arc is set on the puncturing head (1-2) 1), two lance walls (1-2-1) are anteriorly gradually reduced to form tip (1-2-3) from the rear portion puncturing head (1-2), two lance wall (1- 2-1) side edge (1-2-2) is crossed to form in both sides.

2. a kind of abdominal cavity puncture outfit puncture needle according to claim 1, it is characterised in that：The core rod seat (1-3) Top be equipped with instrument channel mouth (1-4), described puncture core bar (1-1) inner hollow, the instrument channel mouth (1-4) with It punctures core bar (1-1) to communicate, and the instrument being additionally provided on core rod seat (1-3) for fixing instrument fixes lock (1-5).

3. a kind of abdominal cavity puncture outfit puncture needle according to claim 2, it is characterised in that：The instrument channel mouth The intilted slope imported convenient for instrument is additionally provided at (1-4), the inclination angle on the slope is 5~60 °.

4. a kind of abdominal cavity puncture outfit puncture needle according to claim 3, it is characterised in that：The inclination angle on the slope is 15~45 °.

5. a kind of abdominal cavity puncture outfit puncture needle according to any one of claims 1 to 4, it is characterised in that：Described It is additionally provided on core rod seat (1-3) and takes needle to buckle (1-6) for what is connected or dismantle, and be located on core rod seat (1-3) and needle is taken to buckle The periphery of (1-6), which is additionally provided with, reinforces convex ribs (1-7).

6. a kind of abdominal cavity puncture outfit with the puncture needle described in claim 1 to 5 any one.