CN102860859A

CN102860859A - Puncture needle of oocyte collector

Info

Publication number: CN102860859A
Application number: CN2012103649344A
Authority: CN
Inventors: 林扬
Original assignee: GUANGZHOU PINZHI MEDICAL DEVICES CO Ltd
Current assignee: Guangzhou Medical Devices Co., Ltd.
Priority date: 2012-09-26
Filing date: 2012-09-26
Publication date: 2013-01-09
Anticipated expiration: 2032-09-26
Also published as: CN102860859B

Abstract

The invention relates to a puncture needle of an oocyte collector, which comprises a needle tube, wherein a needle point is formed on the front end face of the needle tube, an ultrasonic identification grain is formed on the outer wall of the front end of the needle tube and comprises a plurality of annular grooves which are sequentially arranged along the axle wire of the needle tube and are mutually in parallel; and a chamfer is formed between the outer wall of the front end of the needle tube and the front end face of the needle tube and is positioned on two sides of the needle point. By adopting the ultrasonic identification grain and the needle point provided in the invention, the sharpness of the needle point when the follicular wall is repeatedly punctured for picking up ovums is maximally ensured, and the problems of failure, deformation or barbs cannot be caused; and meanwhile, the resistance of the needle point when the follicular wall is repeatedly punctured for picking up ovums is maximally reduced, the tissue trauma is maximally reduced, the pain of a patient is decreased, and even the problems of haemorrhage and the like on a punctured part can be well avoided.

Description

A kind of puncture needle of oocyte harvester

Technical field

The present invention relates to medical apparatus and instruments, relate in particular to a kind of puncture needle of oocyte harvester.

Background technology

Along with the develop rapidly of auxiliary procreation technology, tube-test baby techniques relies on high-end technical guarantee and rigorous scientific procedure, more and more obtains numerous sterility and infertility Mr. and Mrs' favor.And the sterility and infertility patient who day by day increases has higher requirement to the performance accuracy of ova harvest.General method is to adopt the oocyte harvester to get ovum through the puncture vagina under hyperacoustic guiding at present, yet, owing to utilizing the method to obtain main apparatus---the structural agent of the puncture needle of oocyte harvester of ovum, and after causing same needle point to get ovum through the different ovarian follicle wall that repeatedly punctures, easy rust or distortion or generation agnail, and cause hyperacoustic accurate positioning rate variance, penetration Resistance is large, poor surface smoothness and the defective such as rough, thereby not only make troubles to the operator, also can bring misery to the patient, easily cause the problems such as the site of puncture is hemorrhage simultaneously.The puncture needle structure factor of prior art comprises: 1, needle point structure is thin and unreasonable; 2, ultrasound wave identification stricture of vagina generally is netted rag or point-like rag.Be 201010108612.4 and 200520103508.0 the disclosed puncture needle structure of Chinese patent application such as application number, just have above-mentioned deficiency.

Summary of the invention

The object of the invention is to propose a kind of puncture needle of oocyte harvester, its technical problem that can solve has: (1) puncture needle after the repeated puncture ovarian follicle wall is got ovum, easily rust, distortion or produce agnail; (2) puncture needle is when the puncture ovarian follicle wall is got ovum, and penetration Resistance is larger, causes operation inconvenience, even causes that the site of puncture is hemorrhage.

In order to achieve the above object, the technical solution adopted in the present invention is as follows:

A kind of puncture needle of oocyte harvester, it comprises needle tubing, is formed with needle point on the front end face of needle tubing, is formed with ultrasound wave identification stricture of vagina on the front end outer wall of needle tubing, described ultrasound wave identification stricture of vagina is made of a plurality of annular recess that are arranged in order along the needle tubing axis; Be formed with chamfering between the front end outer wall of needle tubing and the front end face, described chamfering is positioned at the both sides of needle point.

As preferred structure, in order further to reduce resistance, improve the stressing conditions when puncturing, a plurality of annular recess are parallel to each other, and further, the front end face of needle tubing is an inclined-plane, and the plane at each annular recess place is all parallel with front end face.

In order to improve the needle tubing surface flatness, the top side wall of annular recess and needle tubing outer wall form fillet.

As preferred structure, has certain interval between the adjacent annular recess.Described gap is generally at 0.1mm-1.5mm.

As preferred structure, the width of annular recess is 0.1mm-1mm.

As preferred structure, for the time ultrasonic instrument can recognize the echo that ultrasound wave identification stricture of vagina produces, the axial length of described ultrasound wave identification stricture of vagina is 5mm-30mm.

As preferred structure, the axis of needle point and needle tubing forms the first plane; The plane vertical with the first plane is the second plane, and the axis of needle tubing also is positioned on the second plane; The plane at chamfering place is the 3rd plane, and the angle on the 3rd plane and the second plane is acute angle.

As preferred structure, described chamfering is straight chamfering or rounded corner.

The present invention has following beneficial effect:

Adopt ultrasound wave identification stricture of vagina structure of the present invention and needle point structure, farthest guaranteed the sharpness of needle point when the repeated puncture ovarian follicle wall is got ovum, and rust, distortion can not occur or produce glochidiate problem; And, farthest reduced the resistance of point when the puncture ovarian follicle wall is got ovum of threading a needle, farthest reduced tissue injury, reduce patient's misery, even can avoid well the problems such as the site of puncture is hemorrhage.

Description of drawings

Fig. 1 is the front view of puncture needle of the oocyte harvester of preferred embodiment of the present invention;

Fig. 2 is the rearview of Fig. 1;

Fig. 3 is the left view of Fig. 1.

Reference numeral: 1, needle tubing; 2, needle point; 3, chamfering; 4, ultrasound wave identification stricture of vagina; 401, annular recess; 100, the first plane; 200, the second plane; 300, front end face.

The specific embodiment

Below, by reference to the accompanying drawings and the specific embodiment, the present invention is described further:

Such as Fig. 1, Fig. 2 and shown in Figure 3, a kind of puncture needle of oocyte harvester, it comprises needle tubing 1, is formed with needle point 2 on the front end face 300 of needle tubing 1, is formed with ultrasound wave identification stricture of vagina 4 on the front end outer wall of needle tubing 1.

Described ultrasound wave identification stricture of vagina 4 is made of a plurality of annular recess 401 that are arranged in order along needle tubing 1 axis and are parallel to each other.Be formed with chamfering 3 between the outer wall of needle tubing 1 and the front end face 300, described chamfering 3 is positioned at the both sides of needle point 2.The chamfering 3 of the present embodiment adopts straight chamfering.

Needle point 2 forms the first plane 100 with the axis of needle tubing 1; The plane vertical with the first plane 100 is the second plane 200, and the axis of needle tubing 1 also is positioned on the second plane 200; The plane at chamfering 3 places is the 3rd plane (figure does not mark), and the included angle B on the 3rd plane and the second plane 200 is acute angle (seeing also Fig. 2), and the preferred angular range of included angle B can be between 5 °-80 °.That is to say, between the outer wall of needle tubing 1 and front end face during machining, be to cut out chamfering 3 towards the direction that needle point 2 thrusts ovarian follicle wall.

The front end face 300 of needle tubing 1 is an inclined-plane, and the plane at each annular recess 401 place is all parallel with front end face 300.

The top side wall of annular recess 401 and needle tubing 1 outer wall form fillet, to improve the smoothness on needle tubing 1 surface.

Has certain interval between the adjacent annular recess 401.The interstice coverage of the present embodiment is preferably 0.1mm-1.5mm.

The width range of the annular recess 401 of the present embodiment is preferably 0.1mm-1mm.

The axial length range of the ultrasound wave identification stricture of vagina 4 of the present embodiment is preferably 5mm-30mm.

During use, under ultrasonic leading, the oocyte harvester enters ovary by posterior fornix, and 2 pairs of a certain ovarian follicle wall of the needle point of puncture needle puncture and get ovum, and then needle point 2 withdraws from this ovarian follicle wall again, again another ovarian follicle wall is carried out oocyte pickup.The needle point 2 of the puncture needle of the present embodiment still has higher sharpness after the repeated puncture ovarian follicle wall is got ovum, and can rust, distortion or produce agnail; And the ultrasound wave on the needle tubing 1 of puncture needle identification stricture of vagina 4 make the piercing process when getting ovum become easily, easy, and provide strong assurance for accurate operation and the location of getting the ovum process.

The puncture needle of the oocyte harvester of the present embodiment have the puncture easy, safe and reliable, to the patient bring painful little, easy to use, simple operation and other advantages.

In addition, the size of the ultrasound wave of the present embodiment identification stricture of vagina 4 and annular recess 401 all can arrange according to actual needs; The chamfering of the present embodiment can also machining become rounded corner.

For a person skilled in the art, can make other various corresponding changes and distortion according to technical scheme described above and design, and these all changes and distortion should belong within the protection domain of claim of the present invention all.

Claims

1. the puncture needle of an oocyte harvester, comprise needle tubing (1), be formed with needle point (2) on the front end face (300) of needle tubing (1), be formed with ultrasound wave identification stricture of vagina (4) on the front end outer wall of needle tubing (1), it is characterized in that, described ultrasound wave identification stricture of vagina (4) is made of a plurality of annular recess (401) that are arranged in order along needle tubing (1) axis; Be formed with chamfering (3) between the front end outer wall of needle tubing (1) and the front end face (300), described chamfering (3) is positioned at the both sides of needle point (2).

2. the puncture needle of oocyte harvester as claimed in claim 1 is characterized in that, a plurality of annular recess (401) are parallel to each other.

3. the puncture needle of oocyte harvester as claimed in claim 2 is characterized in that, the front end face (300) of needle tubing (1) is an inclined-plane, and the plane at each annular recess (401) place is all parallel with front end face (300).

4. the puncture needle of oocyte harvester as claimed in claim 1 is characterized in that, the top side wall of annular recess (401) and needle tubing (1) outer wall form fillet.

5. the puncture needle of oocyte harvester as claimed in claim 1 is characterized in that, adjacent annular recess has certain interval between (401).

6. the puncture needle of oocyte harvester as claimed in claim 1 is characterized in that, the width of annular recess (401) is 0.1mm-1mm.

7. the puncture needle of oocyte harvester as claimed in claim 1 is characterized in that, the axial length of described ultrasound wave identification stricture of vagina (4) is 5mm-30mm.

8. the puncture needle of oocyte harvester as claimed in claim 1 is characterized in that, needle point (2) forms the first plane (100) with the axis of needle tubing (1); The plane vertical with the first plane (100) is the second plane (200), and the axis of needle tubing (1) also is positioned on the second plane (200); The plane at chamfering (3) place is the 3rd plane, and the angle of the 3rd plane and the second plane (200) is acute angle.

9. the puncture needle of oocyte harvester as claimed in claim 1 is characterized in that, described chamfering (3) is straight chamfering or rounded corner.