CN208524991U - A kind of novel puncture device - Google Patents

Abstract

The utility model relates to a kind of novel puncture devices, belong to medical instrument correlative technology field.It mainly include outer tube, needle core and syringe, the outer tube has smooth top, and outer tube is equipped with puncturing hole, and puncturing hole has fillet, has lug boss on the inside of the outer tube；The puncturing hole is through the lug boss；The upper end of the lug boss has the dome-type groove being connected to the puncturing hole；Air bag with column protruding portion is located in the dome-type groove；The column protruding parts are in dome-type groove to the puncturing hole between fillet；Filling channel is all had inside the outer tube and inside lug boss, is located in the filling channel for controlling the air bag expansion with the gas tube shunk, one end of the gas tube is located at except outer tube.The present apparatus solves that muscle is easily pulled/torn to outer tube in the prior art, needle core depth is difficult to grasp and needle core and the technical issues of puncturing hole dislocation by designing new structure.

Description

A kind of novel puncture device

Technical field

The utility model relates to medical instrument correlative technology fields, in particular to a kind of novel puncture device.

Background technique

In gynecological clinic work, there are many uteroventral operations, drug must be injected to uterine cavity inner disease foci area or mesometrium, Such as: endometrial carcinoma injects nano-sized carbon tracer between preoperative uterine cavity flesh wall, can in favor of in art sentinel lymph node show Track；Embryo drug can be killed to uterine cavity inner disease foci, such as scar gestation lesion, the injection of cervical pregnancy lesion row under ultrasound guidance Treatment.

During uteroventral operation, more important injecting apparatus is puncture needle.

Existing puncture needle, is analyzed from structure, generally comprises the outer tube with smooth outer end, has inside outer tube Needle core and syringe, by needle core is whole and a part of syringe is wrapped in, outer tube smooth ends have for wearing outer tube The puncturing hole of pricker disengaging.It is more sharp because puncturing bore edges, so often there are the unexpected feelings for scratching patient's vagina and uterine neck Condition.

To solve the above-mentioned problems, the puncturing hole on modified outer tube has carried out fillet processing, the change base of the structure Originally it solves and punctures the case where bore edges surprisingly scratch patient's vagina and uterine neck.But find again in use: because of intravaginal There are more fold and column muscle, fold and column muscle are easily downwardly into puncturing hole in leading for fillet, along with The movement of outer tube, the muscle for entering puncturing hole can be pulled, be torn.

As another defect, without matching relationship between existing puncture needle, outer tube and syringe, outer tube only plays guidance Effect, causes the practical depth of needle core to be difficult to grasp.Meanwhile because syringe and needle core can carry out unconfined turn in outer tube It is dynamic, so in injection process, it may appear that the case where needle core and puncturing hole misplace.

Utility model content

Purpose of the utility model is to overcome the deficiencies of the above prior art and provide a kind of novel puncture devices.This dress It sets by designing new structure, solves that outer tube in the prior art easily pulls tearing muscle, needle core depth is difficult to grasp and needle The technical issues of core and puncturing hole misplace.

In order to achieve the above objectives, the utility model adopts the following technical solution:

A kind of novel puncture device, including outer tube, needle core and syringe, the outer tube have smooth top, housing Pipe is equipped with puncturing hole, and puncturing hole has fillet,

There is lug boss on the inside of the outer tube；

The puncturing hole is through the lug boss；

The upper end of the lug boss has the dome-type groove being connected to the puncturing hole；

Air bag with column protruding portion is located in the dome-type groove；

The column protruding parts are in dome-type groove to the puncturing hole between fillet；

Filling channel is all had inside the outer tube and inside lug boss, for controlling the air bag expansion and contraction Gas tube is located in the filling channel, and one end of the gas tube is located at except outer tube.

Preferably, the lower end of the lug boss has for tapered groove compatible with front end of the syringe needle.

Preferably, the length of the lug boss is greater than the one third of housing length of tube.

Preferably, there is scale on the outer tube.

Preferably, the axis of the puncturing hole is not overlapped with the axis of outer tube.

Preferably, the syringe is eccentric syringe.

The beneficial effects of the utility model are:

(1) puncturing hole is blocked by air bag close to the part of outer sleeve upper, makes outer tube near non-porous closing Structure, so avoid intravaginal fold and column muscle because enter puncturing hole caused by pull/tear the case where.

(2) air bag can be evacuated before injecting drug, making balloon contraction, then puncturing hole is fully on, just at coccoid In drug injection.

(3) length of lug boss is greater than the one third of housing length of tube, keeps the actual depth of puncturing hole larger, and punctures The axis in hole is not overlapped with the axis of outer tube, and then can be accommodated needle core and be limited to needle core, and syringe and needle are prevented Core is rotated without constraint, it is ensured that needle core is in puncturing hole always.

(4) lower end of lug boss has tapered groove compatible with front end of the syringe needle, then can limit syringe Position, it is ensured that muscle layer punctures successfully.

Detailed description of the invention

Fig. 1 is the external structure schematic diagram of embodiment 1；

Fig. 2 is the schematic diagram of internal structure of embodiment 1；

Fig. 3 is the partial enlarged view in Fig. 2 at A；

Fig. 4 is the airbag structure schematic diagram in embodiment 1；

Fig. 5 is the application state schematic diagram of embodiment 1；

Fig. 6 is the external structure schematic diagram of embodiment 2 in the utility model；

Fig. 7 is the left view of Fig. 6；

Fig. 8 is the structural schematic diagram of the needle core in the utility model in embodiment 2；

Wherein:

Outer tube 101, scale 102, lug boss 103, filling channel 104, tapered groove 105, puncturing hole 106, dome-type Groove 107；

Gas tube 201, air bag 202, column protruding portion 2021, dome-type protruding portion 2022；

Syringe 301；

Needle core 401.

Specific embodiment

The utility model is described in detail below in conjunction with attached drawing.

Embodiment 1: a kind of novel puncture device, external structure is as shown in Figure 1, internal structure such as Fig. 2, Fig. 3 and Fig. 4 institute Show, comprising:

Outer tube 101, needle core 401 and syringe 301, the outer tube 101 have smooth top, set on outer tube 101 There is a puncturing hole 106, the junction of puncturing hole 106 and outer tube 101 is rounded structure.Rounded structure can make puncturing hole 106 It is relatively smooth with the junction of outer tube 101, it avoids scratching vagina muscles.

There is lug boss 103 on the inside of outer tube 101.Puncturing hole 106 is through the lug boss 103, so that puncturing hole 106 The bottom side that lug boss 103 is extended to since the top of outer tube 101 stop.The length of the lug boss 103 is greater than housing The one third of 101 length of pipe, so that the depth of puncturing hole 106 is larger.Meanwhile the axis of puncturing hole 106 and outer tube 101 Axis is not overlapped, then when the needle core 401 connecting with syringe 301 is placed in puncturing hole 106, then syringe 301 can not be with certainly The axis of body pivots about, and needle core 401 can not also be pivoted about with the axis of itself, and then guarantee that muscle layer is worn Needle core 401 is in puncturing hole 106 always before piercing, it is ensured that puncture is gone on smoothly.Because of the axis and outer tube of puncturing hole 106 101 axis is not overlapped, so 301 natural selection of syringe is eccentric syringe.

The upper end of the lug boss 103 has the dome-type groove 107 being connected to the puncturing hole 106；One air bag 202 is set In the dome-type groove 107, the air bag 202 have column protruding portion 2021 and with 107 phase of dome-type groove The dome-type protruding portion 2022 of adaptation.The column protruding portion 2021 is located at 107 top of dome-type groove between fillet lower edge Puncturing hole 106 in.The structure makes the present apparatus before not carrying out muscle layer puncture, and puncturing hole 106 is close to the end of outer tube 101 It is blocked by column protruding portion 2021, is avoided that fold and column muscle enter in puncturing hole 106.

Inside the tube wall of outer tube 101 and the inside of lug boss 103 all has filling channel 104, for controlling air bag 202 expansions are located in the filling channel 104 with the gas tube 201 shunk, and one end of the gas tube 201 and air bag 202 connect Logical, the other end of gas tube 201 is located at except the tube wall of outer tube 101, is used for and inflation/deflation mechanism connection.In this way, air bag 202 Can free inflation/deflation, realize the variation of form.

In the lower end of lug boss, has for tapered groove 105 compatible with 301 front end of syringe, can lead in this way Outer tube 101 is crossed to limit syringe 301 and needle core 401.Because vagina size, uterine neck size, uterus size, palace flesh are thick The size of degree, the height of lug boss 103, the length of needle core 401 and syringe 301 is it is known that and having quarter on outer tube 101 Degree 102, so under the premise of can judge depth in 101 body of outer tube, the practical depth of needle core 401 is also being capable of accurate handle It holds.

Referring again to shown in Fig. 2, before carrying out muscle layer injection, first air bag 202 is inflated, column protruding portion 2021 is enabled to block The upper end of puncturing hole 106.Then it will enter uterine cavity after 101 Via vagina of outer tube and uterine neck, judge outer tube according to scale 102 101 internal depth.Refering to what is shown in Fig. 5, applying negative pressure to air bag 202, then air bag 202 is shrunk to small after outer tube 101 is in place It is spherical, it is located in dome-type groove 107, puncturing hole 106 is completely unimpeded.Outer tube 101 is held next, stablizing, then is carried out Muscle layer punctures.When 301 front end of syringe is adapted with tapered groove 105, needle core 401 is pierced into muscle layer, is injected.It has injected Cheng Hou retracts syringe 301, is again introduced into needle core 401 in puncturing hole 106 to avoid to uterine neck and vagina scuffing.Finally, The connection syringe 301 of outer tube 101 is exited in vitro together.

Designed syringe 301 and needle core 401 in this programme, structure and syringe in the prior art and needle core phase Together, then syringe 301 and needle core 401 can be separated from each other, for detachable cooperation.In this way, the premise constant in needle core 401 Under, syringe 301, which can according to need, is selected as 5ml, 10ml, 20ml or other specifications.The length of needle core 401, at least 12cm, the length can guarantee to puncture successfully.

While selecting different size syringe, the present apparatus should also be as selecting different sizes, can guarantee needle in this way The tip lengths that core 401 is exposed to outer tube 101 are 0.5cm or so.The protruded length can either guarantee to puncture successfully, and can Prevent the perforation of uterus.

Embodiment 2: a kind of novel puncture device, external structure is as shown in Figure 6 and Figure 7, internal structure such as Fig. 2, Fig. 3 and Shown in Fig. 4, application state is as shown in Figure 5, comprising:

Outer tube 101, needle core 401 and syringe 301, the structure of needle core 401 are as shown in Figure 8.The outer tube 101 has Smooth top, outer tube 101 are equipped with puncturing hole 106, and the junction of puncturing hole 106 and outer tube 101 is rounded structure.Fillet Structure can make puncturing hole 106 and the junction of outer tube 101 relatively smooth, avoid scratching vagina muscles.

Sting device provided by the present embodiment, internal structure is same as Example 1, and difference is outer tube 101 and needle Core 401 is arc.Because human body is since introitus, the path of Via vagina and uterine neck arrival uterus, substantially also arc-shaped.Then originally The outer tube of arc and interior needle core can preferably be suitble to organization of human body in embodiment.

The foregoing description of the disclosed embodiments can be realized professional and technical personnel in the field or using originally practical new Type.Various modifications to these embodiments will be readily apparent to those skilled in the art, and determine herein The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present utility model.Cause This, the present invention will not be limited to the embodiments shown herein, and is to fit to and principles disclosed herein The widest scope consistent with feature.

Claims (6)

1. a kind of novel puncture device, including outer tube, needle core and syringe, the outer tube has smooth top, outer tube It is equipped with puncturing hole, puncturing hole has fillet, it is characterised in that:

There is lug boss on the inside of the outer tube；

The puncturing hole is through the lug boss；

The upper end of the lug boss has the dome-type groove being connected to the puncturing hole；

Air bag with column protruding portion is located in the dome-type groove；

The column protruding parts are in dome-type groove to the puncturing hole between fillet；

Filling channel is all had inside the outer tube and inside lug boss, for controlling inflation air bag expansion and shunk Pipe is located in the filling channel, and one end of the gas tube is located at except outer tube.

2. novel puncture device according to claim 1, it is characterised in that: the lower end of the lug boss have for note The compatible tapered groove in emitter front end.

3. novel puncture device according to claim 1, it is characterised in that: the length of the lug boss is greater than housing pipe range The one third of degree.

4. novel puncture device according to claim 1, it is characterised in that: have scale on the outer tube.

5. novel puncture device according to claim 1, it is characterised in that: the axis of the puncturing hole and the axis of outer tube Line is not overlapped.

6. novel puncture device according to claim 5, it is characterised in that: the syringe is eccentric syringe.