CN216167748U

CN216167748U - Oocyte collector

Info

Publication number: CN216167748U
Application number: CN202122553338.8U
Authority: CN
Inventors: 管筱磊; 朱孙瑜; 章建昌
Original assignee: Shanghai Shangyi Kangge Medical Instruments Co ltd
Current assignee: Shanghai Shangyi Kangge Medical Instruments Co ltd
Priority date: 2021-10-22
Filing date: 2021-10-22
Publication date: 2022-04-05
Anticipated expiration: 2031-10-22

Abstract

The utility model discloses an oocyte collector, which comprises a puncture needle, wherein the tail end of the puncture needle is connected with a double-cavity negative pressure suction device through a first connector, a channel is arranged at the axis of the puncture needle, and a plurality of echo positioning points are arranged at the part, close to the head end, of the outer surface of the puncture needle along the radial direction. The oocyte collector disclosed by the utility model is simple in structural design, and the puncture needle can position and confirm the structure in the channel, so that the effects of extracting and flushing are effectively achieved.

Description

Oocyte collector

Technical Field

The utility model relates to the technical field of medical instruments, in particular to an oocyte collector which is used for collecting oocytes in an ovulation induction period of a test-tube infant and is suitable for physiological and pathological follicle puncture and assisted reproduction ovum taking operation.

Background

In the auxiliary reproductive ovarian stimulation period, puncture operations are needed for physiological pathological follicles, endophytic cysts, hydrosalpinx of the fallopian tube attachment and the like. And after the ovarian follicle is mature in the superovulation-promoting period, the ovarian follicle is conventionally punctured by a fine needle under the guidance of ultrasound to collect the oocyte. Follicle puncturing is therefore the most important and common surgical and manipulation technique for IVF cycles in test-tube infants.

The change of uterus ovary caused by pathological changes such as pelvic adhesion, myoma, adenomyosis and the like often causes puncture difficulty, and is an important reason for more operation failure and corresponding complications. Serious hysteromyoma oppresses annexes, the uterus and ovary are invaded by the endometriosis, the follicle display boundary is unclear under ultrasound due to luteal phase ovum taking and rich blood vessels and adhesion, and the ovum obtaining is not ideal easily. Repeated ovarian puncture and improper puncture angle are also important factors causing postoperative bleeding and ovarian injury and further influencing auxiliary reproductive fatality.

The puncture needle used clinically at present is a thin stainless steel single-cavity needle, the puncture section is a needle head with a smooth section, and after the puncture section of the needle head punctures the follicle, the follicular fluid is sucked out by using a double-cavity or single-cavity negative pressure suction at the tail end, so that the oocyte and the annex thereof are collected. However, the existing puncture instruments have great problems:

1. the puncture section needle head is not accurately displayed under ultrasound, the ultrasound display is unclear due to the change of tissues around an accessory area caused by pathological changes such as pelvic adhesion or myoma, abundant blood vessels and the like, the needle head is inaccurately positioned, and the ovum obtaining is not ideal due to the fact that the needle head can only be judged by the experience of a doctor under many conditions;

2. due to the process limitation, needle burrs are easy to appear on the puncture head, and follicle injury and iatrogenic flavonization are caused;

3. under the condition of difficult ovum taking and positioning, the ovary is easy to be damaged by using a high-hardness metal puncture needle, and even a great amount of intra-abdominal bleeding can be caused by rough and violent operation;

4. repeated puncture may bring contaminants in the vagina into the pelvic cavity, causing pelvic infection.

Therefore, how to design an oocyte collector which can solve the above technical problems is the subject of intensive research by the present inventors.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an oocyte collector which is simple in structural design, a puncture needle of the oocyte collector can position and confirm the structure in a channel, and the oocyte collector can effectively achieve the effects of extracting and flushing.

In order to achieve the purpose, the technical scheme of the utility model is as follows: the utility model provides an oocyte collector, includes the pjncture needle, the tail end of pjncture needle is connected with two-chamber negative pressure suction device through first joint, negative pressure suction device is connected with the negative pressure source, the pjncture needle is equipped with the passageway along axle center department, the position that is close to the syringe needle head end of pjncture needle is along radially being equipped with a plurality of echo setpoint.

Preferably, the plurality of echo positioning points are radially provided with a plurality of circles, the plurality of echo positioning points of each circle are uniformly spaced, and the distances between the echo positioning points of two adjacent circles are equal.

Preferably, the puncture needle has the size of 16-21G and the length of 300-400 mm.

Preferably, the puncture needle is made of stainless steel material.

Preferably, the needle head of the puncture needle is provided with an inclined tangent plane.

Preferably, two-chamber negative pressure suction device includes first negative pressure pipe, the one end of first negative pressure pipe with first articulate, the other end and the negative pressure test tube stopper of first negative pressure pipe are connected, be equipped with two mounting holes on the negative pressure test tube stopper, one of them connect on the mounting hole first negative pressure pipe, another connect second negative pressure pipe on the mounting hole, second negative pressure pipe with the negative pressure source is connected.

Preferably, the other end of the second negative pressure conduit is connected with a second joint, and the negative pressure source is connected with the second joint.

Preferably, the number of the channels is two, the first connector is connected with a flushing catheter, and the flushing catheter passes through the first connector and then is communicated with one of the channels.

Preferably, the region between two of said channels is a V-shaped partition.

Preferably, the other end of the irrigation catheter is connected with a third connector.

After the scheme is adopted, the oocyte collector disclosed by the utility model has the advantages that the echo positioning point is arranged at the position, close to the head end of the needle head, of the puncture needle, the puncture needle penetrates into the ovary of a human body when in use, the echo positioning point is checked under ultrasound so as to confirm the position of a follicle, and the oocyte is extracted by a negative pressure source; and if a double-channel puncture needle is adopted, after the oocyte is extracted through the negative pressure source, the injector is connected with the other end of the flushing catheter, the injector injects the follicle through one channel of the flushing catheter and the puncture needle, and the follicle is extracted again after the follicle is filled, so that the fault tolerance rate is reduced in case of single extraction failure, and the pain of a patient is reduced.

Drawings

FIG. 1 is a schematic structural diagram of an oocyte collector according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a puncture needle according to a first embodiment of the oocyte collector of the present invention;

FIG. 3 is a schematic top view of a puncture needle according to a first embodiment of the oocyte collector of the present invention;

FIG. 4 is a schematic structural diagram of a second oocyte collector embodiment of the present invention;

FIG. 5 is a schematic structural view of a puncture needle according to a second embodiment of the oocyte collector of the present invention;

FIG. 6 is a schematic top view of the puncture needle of the second oocyte collector embodiment of the present invention.

Detailed Description

The present invention is further described with reference to the following drawings and specific examples so that those skilled in the art can better understand the present invention and can practice the present invention, but the examples are not intended to limit the present invention.

As shown in figure 1, the oocyte collector of the present invention has a structure which is schematically illustrated, and comprises a puncture needle 1, wherein the puncture needle 1 is made of stainless steel material. Referring to fig. 2 and 3, the puncture needle 1 of the present embodiment is provided with a channel 2 along the axial center, and the tip of the puncture needle 1 is provided with an inclined section 12, so that the tip is designed to avoid burr generation and damage to the follicle and its appendages when entering and exiting the follicle. The size of the puncture needle 1 is 16-21G, the length of the puncture needle 1 is 300-400mm, and 350mm is adopted in the embodiment.

The part of the puncture needle 1 close to the head end is provided with a plurality of echo positioning points 3 along the radial direction, the echo positioning points 1 are provided with a plurality of circles along the radial direction, the echo positioning points 3 of each circle are arranged at even intervals, and the distances between the echo positioning points 3 of two adjacent circles are equal. The multiple echo positioning points 3 of each circle are arranged at even intervals. In the embodiment, three circles of echo positioning points 3 along the radial direction at positions 2cm, 3cm and 4cm away from the head end of the needle are respectively specially marked, so that the needle is prevented from being punctured deeply to damage and prevent heavy bleeding caused by abundant blood vessels in a pelvic cavity. The echo positioning points 3 are combined with the oblique-cutting needle echo setting, the position of the needle can be accurately positioned by checking under ultrasound, and the damage to the theca and the accessory tissue caused by the blind penetration of the needle is avoided.

The tail end of the puncture needle 1 is connected with a double-cavity negative pressure suction device through a first connector 4. The double-cavity negative pressure suction device comprises a first negative pressure conduit 5, one end of the first negative pressure conduit 5 is connected with the first connector 4, the other end of the first negative pressure conduit 5 is connected with a negative pressure test tube plug 6, and the length of the negative pressure test tube plug 6 is 80cm and is in a round table shape. Two mounting holes are formed in the negative pressure test tube plug 6 in the direction parallel to the axial lead, a first negative pressure guide tube 5 is connected to one mounting hole, a second negative pressure guide tube 7 is connected to the other mounting hole, the other end of the second negative pressure guide tube 7 is connected with a second connector 8, and the second connector 8 is connected with a negative pressure source.

During the use, fill in first negative pressure pipe 5 on one of them mounting hole of negative pressure test tube stopper 6, connect second joint 8 with the negative pressure source and be connected, penetrate human ovary with pjncture needle 1 after that, look over echo setpoint 3 and can confirm the position of follicle under the supersound, by the former extraction oocyte of negative pressure, this collector structural design is simple, and is simple and convenient to use, and its pjncture needle can fix a position the structure of confirming in the passageway, effectively plays the effect of washing while extracting

As shown in fig. 4, the second embodiment of the oocyte collector of the present invention has a schematic structure, most of the structure of the present embodiment is the same as that of the first embodiment, and the description of the same parts is omitted, except that: referring to fig. 5 and 6, the puncture needle 1 of the present embodiment is provided with two channels 2 along the axial center, and a V-shaped partition 9 is provided between the two channels 2.

The first connector 4 is connected with an irrigation catheter 10, and one end of the irrigation catheter 10 passes through the first connector 4 and then is communicated with one channel 2. The other end of the irrigation catheter 10 is connected to a third connector 11.

When the device is used, the first negative pressure catheter 5 is plugged into one of the mounting holes of the negative pressure test tube plug 6, the second connector 8 is connected with a negative pressure source, the puncture needle 1 penetrates into an ovary of a human body, the position of a follicle can be confirmed by looking up the echo positioning point 3 under ultrasound, and oocytes are extracted through a negative pressure source through the channel of the puncture needle 2. The injector is connected with the flushing catheter 10, is injected into the follicle through the flushing catheter 10 and one channel of the puncture needle 1, and is extracted again after being filled to prevent single extraction failure, reduce the fault tolerance rate and reduce the pain of a patient.

The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the utility model is all within the protection scope of the utility model. The protection scope of the utility model is subject to the claims.

Claims

1. The oocyte collector is characterized by comprising a puncture needle, wherein the tail end of the puncture needle is connected with a double-cavity negative pressure suction device through a first connector, the negative pressure suction device is connected with a negative pressure source, a channel is arranged at the position of the puncture needle along the axis, and a plurality of echo positioning points are arranged at the position of the puncture needle close to the head end of the needle head along the radial direction.

2. The oocyte collector of claim 1, wherein a plurality of the echo positioning points are radially arranged in a plurality of circles, the echo positioning points of each circle are evenly spaced, and the distances between the echo positioning points of two adjacent circles are equal.

3. The oocyte collector of claim 2, wherein the puncture needle has a size of 16-21G and a length of 300-400 mm.

4. The oocyte collector of claim 3, wherein the puncture needle is made of stainless steel material.

5. The oocyte collector of claim 1, wherein the needle tip of the puncture needle is provided with an inclined cut surface.

6. The oocyte collector of claim 1, wherein the double-cavity negative pressure suction device comprises a first negative pressure conduit, one end of the first negative pressure conduit is connected with the first joint, the other end of the first negative pressure conduit is connected with a negative pressure test tube plug, the negative pressure test tube plug is provided with two mounting holes, one of the mounting holes is connected with the first negative pressure conduit, the other mounting hole is connected with a second negative pressure conduit, and the second negative pressure conduit is connected with the negative pressure source.

7. The oocyte collector of claim 6, wherein a second connector is connected to the other end of the second negative pressure conduit, and the negative pressure source is connected to the second connector.

8. The oocyte collector of claim 1, wherein the number of the channels is two, the first connector is connected with a flushing catheter, and the flushing catheter passes through the first connector and then is communicated with one of the channels.

9. The oocyte collector of claim 8, wherein a portion between the two channels is a V-shaped partition.

10. The oocyte collector of claim 8, wherein a third connector is connected to the other end of the irrigation catheter.