CN111588451A - Push-injection pressurizing anti-suck-back double-cavity ovum taking needle with puncture protection device - Google Patents

Abstract

The present application relates to the technical field of medical devices, and discloses a bolus injection pressurized anti-suckback double-lumen oocyte retrieval needle with a puncture protection device, comprising an oocyte retrieval needle body, a first drainage tube, a storage device and a negative pressure pump connected in sequence, It also includes a flushing device, the flushing device is threadedly connected to the first drainage pipe, a puncture protection device is arranged on the egg retrieval needle body, and further, a negative pressure pump protection device is also arranged between the storage device and the negative pressure pump. The application can well collect the egg cells attached to the ovarian tissue, and obtain as many egg cells as possible, and at the same time, it can also avoid the situation that the body of the egg retrieval needle will stab the patient due to poor operation, so it is not only safe to use, but also It reduces the probability of injury to the patient, and when the device is not in use, it can also protect medical staff and prevent them from being stabbed. Furthermore, during the entire egg retrieval process, the process can be controlled in real time to avoid negative pressure devices. damage, contamination of suction fluid, etc.

Description

Bolus pressurized anti-suckback double-lumen egg retrieval needle with puncture protection device

technical field

The present application relates to the technical field of medical devices, in particular to a bolus pressurized anti-suckback double-lumen egg retrieval needle with a puncture protection device.

Background technique

IVF-ET (In Vitro Fertilization - Embryo Transfer) in vitro fertilization-embryo transfer technology, also known as in vitro fertilization, is one of the main technical means to solve infertility in contemporary medicine. In vitro fertilization, after developing into embryos, and then transplanting back into the mother's uterus to achieve the purpose of conception, although the research on human in vitro fertilization-embryo transfer technology is relatively late, it has developed very rapidly.

In the entire IVF-ET cycle, the egg retrieval link after the trigger has become one of the key links in the entire process, because the number of eggs retrieved in this link directly affects the number of embryos cultured in the subsequent laboratory embryo culture link. . However, in the process of egg retrieval, due to various factors, the patient's follicles do not grow well, mature follicles are too few, and the yield of empty follicles will greatly reduce the quantity and quality of the finally obtained eggs. It flows down with the follicular fluid and adheres to the ovarian tissue, which causes certain difficulties in egg retrieval. Moreover, in the operation process of most reproductive centers, the protection of patients, process control, medical staff needle-stick injury protection, negative pressure device protection and suction fluid There are still many defects and deficiencies in protection and other aspects.

SUMMARY OF THE INVENTION

In order to overcome the above-mentioned problems and deficiencies in the prior art, the present application aims to provide an egg cell that can well collect ovum cells attached to the ovarian tissue, and also has a protective effect on patients and medical staff. During the egg process, the process can also be controlled in real time to avoid the damage of the negative pressure device and the contamination of the aspirated fluid.

In order to realize the above-mentioned purpose of the invention, the technical scheme of the present application is as follows:

A bolus pressurized anti-backsucking double-lumen egg retrieval needle with a puncture protection device, comprising an egg retrieval needle body, a first drainage tube, a storage device and a negative pressure pump connected in sequence, and a flushing device, the flushing The device includes an injector, the end of the first drainage tube that is close to the body of the oocyte retrieval needle is provided with a branch pipe that is connected to the injector, the other end of the branch pipe is provided with an internal thread, and the end where the injector is connected to the branch pipe is provided with an external thread. thread, the branch pipe and the injector are threadedly connected, the branch pipe is also provided with a first control switch, and the end of the first drainage pipe that is far away from the oocyte retrieval needle body is provided with a second control switch; the oocyte retrieval needle body is provided with a second control switch; A puncture protection device is provided on it, the puncture protection device is a long strip structure, including a protective cover and a locking mechanism, the two ends of the protective cover have openings, and are sleeved on the egg retrieval needle body through the opening, and its length is smaller than the egg retrieval needle body. The length of the protective cover away from the needle tip of the egg retrieval needle body is symmetrically provided with a holding handle, and the locking mechanism includes a connector hingedly connected to the holding handle at one end, a positioning post arranged on the other end of the connector, and a handle arranged on the handle. The first fixing seat and the second fixing seat are respectively provided with sockets matching with the positioning posts; a negative pressure pump protection device is also arranged between the storage device and the negative pressure pump.

Preferably, the storage device is of a split structure, including a transition bottle and a collection bottle, the top of the transition bottle is connected to the first drainage pipe, the bottom end of which is an open structure and is provided with external threads, and the top of the collection bottle is open and provided with The inner thread is matched with the outer thread of the transition bottle, the transition bottle and the collection bottle are threadedly connected, and a third control switch is also arranged at the tail of the transition bottle.

Preferably, the negative pressure pump protection device includes a second drainage tube and a transfer bottle, one end of the second drainage tube is connected to the transition bottle, the other end is connected to the transfer bottle, the negative pressure pump is connected to the transfer bottle through the negative pressure tube, and the negative pressure pump is connected to the transfer bottle through the negative pressure tube. A fourth control switch is arranged on the pressure pipe.

Preferably, the injector includes a syringe and a push rod, and two ends of the tail of the syringe are symmetrically provided with fixed ears, and the fixed ears include ears perpendicular to the syringe and protrusions connected to the ends of the ears.

Preferably, the push rod is a solid cylinder, the outer diameter of which is 1/3 of the inner diameter of the lumen of the syringe.

Preferably, a stopper is provided on the inner wall of the syringe near the tail.

Preferably, the end of the first drainage tube located in the transition bottle is close to the bottle body of the transition bottle.

Preferably, the end of the second drainage tube located in the revolving bottle is close to the bottle body of the revolving bottle.

Preferably, a scale is provided on the bottle body of the transfer bottle.

Preferably, the front end of the protective cover is a circular arc structure.

Beneficial effects of this application:

(1) When the application is in use, it is convenient for the hand-washing nurse to perform real-time control of the entire process of egg retrieval on the operating table. First, the storage device adopts a split design, the upper end is the transition bottle, and the lower end is the collection bottle. The hand-washing nurse can control the intercommunication between the transition bottle and the collection bottle by operating the third control switch. When the lower-end collection bottle is full, the hand-washing nurse closes the third Control the switch, and then turn on the switch after replacing the new collection bottle to continue collecting the aspirated liquid. By replacing the collection bottle in time to transfer the aspirated liquid, it can avoid waste caused by the overflow of the aspirated liquid and pollution of the aspirated liquid after the storage device is fully loaded; Secondly, according to whether the current negative pressure is needed or not, the handwashing nurse can also control the negative pressure of the whole egg retrieval process by operating the second control switch and the fourth control switch.

(2) In the present application, a telescopic puncture protection device is sleeved on the egg retrieval needle body, and the puncture protection device is composed of a protective cover and a locking mechanism. When the medical staff puts the ovum retrieval needle body covered with the protective cover into the patient's vagina, the protective cover wraps the needle tip of the ovum retrieval needle body inside it. Therefore, under the protection of the protective cover, the ovum retrieval needle The needle tip of the main body will not stab the patient's vagina due to improper operation, so it is not only safe to use, but also reduces the risk of injury to the patient. When the device is not in use, the protective cover can also protect the medical staff and prevent the medical staff from taking eggs. Puncture at the needle tip of the needle body.

(3) In the present application, the first drainage tube is provided with a flushing device. Under the action of the flushing device, the egg cells attached to the ovarian tissue can be flushed down and sucked into the collection bottle together with the aspirated fluid. Obtain as many eggs as possible to increase the success rate of fertilization in the assisted reproductive laboratory.

(4) In the present application, the transition bottle and the collection bottle are detachably connected by means of a screw connection. Therefore, in the actual use process, it is more convenient and quick for medical staff to replace the collection bottle.

(5) In this application, a negative pressure pump protection device is arranged between the storage device and the negative pressure pump. The negative pressure pump protection device is composed of a transfer bottle and a second drainage tube. The design of the transfer bottle can avoid the failure of the staff to observe The resulting aspirated liquid enters the negative pressure machine with the pipeline, causing damage to the negative pressure machine, contamination of the aspirated liquid, and infection of the patient. At the same time, it can also avoid the loss of egg cells caused by the overflow of the aspirated liquid after the collection bottle is full.

(6) In this application, the first drainage tube and the second drainage tube are respectively close to the bottle body of the transition bottle and the bottle body of the transfer bottle, which can buffer the liquid flow rate and control the flow direction, so as to achieve the role of drainage and prevent liquid Leaving it directly from a high place can cause splashing, and it also reduces the possibility of damage to the egg cells caused by liquid splashing down from a high place.

(7) In this application, a scale is designed on the bottle body of the transfer bottle, so it is convenient for medical staff to monitor the liquid in the bottle in real time.

(8) In the present application, the front end of the protective cover is designed in a circular arc shape, so the end of the protective cover is smoother, which can avoid unnecessary damage to the patient by the protective cover during the egg retrieval process.

(9) In the present application, a circle of stoppers is provided along the circumferential direction on the inner wall of the syringe near the tail, which can effectively prevent the piston part of the push rod from being pulled out of the syringe by the operator.

Description of drawings

Fig. 1 is a schematic diagram of the initial state structure of the egg retrieval needle body of the application;

Fig. 2 is an enlarged view of the structure of part A in Fig. 1;

Fig. 3 is an enlarged view of the structure of part B in Fig. 1;

Fig. 4 is the structural schematic diagram of the use state of the egg retrieval needle body of the application;

FIG. 5 is a schematic structural diagram of the bolus injector of the present application.

In the attached picture:

1. Egg retrieval needle body; 2. First drainage tube; 3. Storage device; 4. Negative pressure pump; 5. Washing device; 6. First control switch; 7. Second control switch; 8. Puncture protection device; 9, negative pressure pump protection device; 10, the third control switch; 11, negative pressure pipe; 12, the fourth control switch; 13, stopper; 14, scale; 21, branch pipe; 31, transition bottle; 32, collection bottle ; 51, bolus device; 81, protective cover; 82, locking mechanism; 91, second drainage tube; 92, transfer bottle; 511, syringe; 512, push rod; 513, fixed ear; 811, handle handle; 821 822, the positioning column; 823, the first fixed seat; 824, the second fixed seat; 5131, the ear; 5132, the protrusion.

Detailed ways

The present application will be further described in detail below with reference to the examples, but the embodiments of the present application are not limited thereto.

Example 1

This embodiment discloses a bolus pressurized anti-suckback double-lumen egg retrieval needle with a puncture protection device. Referring to FIG. 1 in the specification, the double-lumen egg retrieval needle includes an egg retrieval needle body 1 and a first drainage needle connected in sequence. The tube 2, the storage device 3 and the negative pressure pump 4 also include a flushing device 5, the flushing device 5 includes a bolus device 51, and the end of the first drainage tube 2 close to the egg retrieval needle body 1 is provided with a bolus device. The branch pipe 21 connected to A first control switch 6 is provided, and a second control switch 7 is provided on the end of the first drainage tube away from the egg retrieval needle body 1; the egg retrieval needle body 1 is provided with a puncture protection device 8, and the puncture protection device 8 is: The elongated structure includes a protective cover 81 and a locking mechanism 82. The protective cover 81 is a hollow tubular structure with openings at both ends. The length of 81 is less than the length of the egg retrieval needle body 1, the end of the protective cover 81 away from the needle tip of the egg retrieval needle body 1 is symmetrically provided with a handle 811, and the locking mechanism 82 includes a connector 821 hingedly connected to the handle 811 at one end. , a positioning column 822 arranged on the other end of the connecting piece 821, a first fixing seat 823 and a second fixing seat 824 arranged on the handle, and the two fixing seats are respectively provided with sockets matching the positioning column 822; A negative pressure pump protection device 9 is also arranged between the storage device 3 and the negative pressure pump 4 . The puncture protection device 8 is made of a material that is not easily deformed, and the grip handle 811 and the protective cover 81 are integrally formed.

The overall working principle:

The egg retrieval needle body 1 of the present application has two states, that is, an initial state and a use state. In the initial state, referring to Figures 1 and 3 of the specification, the needle tip of the egg retrieval needle body 1 is located in the protective cover 81, the medical staff holds the handle part on the first drainage tube 2, The egg needle body 1 is placed in the patient's vagina. Due to the protective effect of the protective cover 81, the needle tip of the egg retrieval needle body 1 will not stab the patient's vagina due to poor operation, which is not only safe to use, but also reduces the probability of injury to the patient. , and when the device is not in use, the protective cover 81 can also protect the medical staff and prevent the medical staff from being stabbed. In the initial state, the positioning post 822 is inserted into the jack on the first fixing seat 823 to connect the protective cover 81 Fix; further, when the egg retrieval needle is in use, that is, when it is necessary to absorb the egg cells in the ovary of the patient, referring to FIG. 4 in the description, the positioning post 822 is taken out from the first fixing seat 823, and then the fingers are buckled on the protective cover. The holding handle 811 on the 81 pulls the protective cover 81 toward the handle, so that the needle tip of the egg retrieval needle body 1 is exposed from the end of the protective cover 81, and then the positioning post 822 is inserted into the socket on the second fixing seat 824. In this way, the protective cover 81 is fixed, and finally the needle tip of the egg retrieval needle body 1 is used to pierce the vaginal wall and the egg retrieval needle body 1 is further pierced into the ovary, then the negative pressure pump 4 is turned on, and the egg cells in the ovary are sucked out with the liquid. into the storage device 3; further, the medical staff can use the bolus injector 51 to inject fluid into the ovary, flush out the egg cells attached to the ovarian tissue, and be sucked into the storage device 3 together with the aspirated fluid to reduce the amount of egg cells in the ovary. Adhesion and retention on the ovarian wall, obtaining as many egg cells as possible, and improving the success rate of fertilization in the assisted reproductive laboratory.

Example 2

This embodiment discloses a bolus pressurized anti-suckback double-lumen egg retrieval needle with a puncture protection device. Referring to FIG. 1 in the specification, the double-lumen egg retrieval needle includes an egg retrieval needle body 1 and a first drainage needle connected in sequence. The tube 2, the storage device 3 and the negative pressure pump 4 also include a flushing device 5, the flushing device 5 includes a bolus device 51, and the end of the first drainage tube 2 close to the egg retrieval needle body 1 is provided with a bolus device. The branch pipe 21 connected to A first control switch 6 is provided, and a second control switch 7 is provided on the end of the first drainage tube away from the egg retrieval needle body 1; the egg retrieval needle body 1 is provided with a puncture protection device 8, and the puncture protection device 8 is: The elongated structure includes a protective cover 81 and a locking mechanism 82. The protective cover 81 is a hollow tubular structure with openings at both ends. The length of 81 is less than the length of the egg retrieval needle body 1, the end of the protective cover 81 away from the needle tip of the egg retrieval needle body 1 is symmetrically provided with a handle 811, and the locking mechanism 82 includes a connector 821 hingedly connected to the handle 811 at one end. , a positioning column 822 arranged on the other end of the connecting piece 821, a first fixing seat 823 and a second fixing seat 824 arranged on the handle, and the two fixing seats are respectively provided with sockets matching the positioning column 822; A negative pressure pump protection device 9 is also arranged between the storage device 3 and the negative pressure pump 4 . The puncture protection device 8 is made of a material that is not easily deformed, and the grip handle 811 and the protective cover 81 are integrally formed.

The overall working principle:

The egg retrieval needle body 1 of the present application has two states, that is, an initial state and a use state. In the initial state, referring to Figures 1 and 3 of the specification, the needle tip of the egg retrieval needle body 1 is located in the protective cover 81, the medical staff holds the handle part on the first drainage tube 2, The egg needle body 1 is placed in the patient's vagina. Due to the protective effect of the protective cover 81, the needle tip of the egg retrieval needle body 1 will not stab the patient's vagina due to poor operation, which is not only safe to use, but also reduces the probability of injury to the patient. , and when the device is not in use, the protective cover 81 can also protect the medical staff and prevent the medical staff from being stabbed. In the initial state, the positioning post 822 is inserted into the jack on the first fixing seat 823 to connect the protective cover 81 Fix; further, when the egg retrieval needle is in use, that is, when it is necessary to absorb the egg cells in the ovary of the patient, referring to FIG. 4 in the description, the positioning post 822 is taken out from the first fixing seat 823, and then the fingers are buckled on the protective cover. The holding handle 811 on the 81 pulls the protective cover 81 toward the handle, so that the needle tip of the egg retrieval needle body 1 is exposed from the end of the protective cover 81, and then the positioning post 822 is inserted into the socket on the second fixing seat 824. In this way, the protective cover 81 is fixed, and finally the needle tip of the egg retrieval needle body 1 is used to pierce the vaginal wall and the egg retrieval needle body 1 is further pierced into the ovary, then the negative pressure pump 4 is turned on, and the egg cells in the ovary are sucked out with the liquid. into the storage device 3; further, the medical staff can use the bolus injector 51 to inject fluid into the ovary, flush out the egg cells attached to the ovarian tissue, and be sucked into the storage device 3 together with the aspirated fluid to reduce the amount of egg cells in the ovary. Adhesion and retention on the ovarian wall, obtaining as many egg cells as possible, and improving the success rate of fertilization in the assisted reproductive laboratory.

Regarding the specific structure of the storage device 3:

Referring to FIG. 1 of the specification, the storage device 3 is of a split structure, including a transition bottle 31 and a collection bottle 32. The top end of the transition bottle 31 is connected to the first drainage tube 2, and its bottom end is an open structure and is provided with an external thread, The top of the collection bottle 32 is open and is provided with an inner thread that matches the outer thread of the transition bottle 31 . The transition bottle 31 and the collection bottle 32 are threadedly connected.

How storage device 3 works:

During egg retrieval, after turning on the second control switch 7 and the third control switch 10, the egg cells enter the collection bottle in the storage device 3 through the first drainage tube 2 along with the aspirated liquid. When the collection bottle 32 is fully loaded, the medical staff Immediately turn off the third control switch 10 , then remove the fully loaded collection bottle 32 from the bottom of the transition bottle 31 , at this time, the aspirated liquid is temporarily stored in the transition bottle 31 , and finally install a new collection bottle 32 on the transition bottle 31 . At the bottom, turn on the third control switch 10 to continue collecting the aspirated liquid. Therefore, by replacing the collection bottle 32 in time to transfer the aspirated liquid, waste and contamination of the aspirated liquid caused by overflow of the aspirated liquid after the storage device 3 is fully loaded can be avoided.

Regarding the specific structure of the negative pressure pump protection device 9:

Referring to Figure 1 of the description, the negative pressure pump protection device 9 includes a second drainage tube 91 and a transfer bottle 92. One end of the second drainage tube 91 is connected to the transition bottle 31, and the other end is connected to the transfer bottle 92. The negative pressure pump 4 The negative pressure pipe 11 is connected to the transfer bottle 92 , and the negative pressure pipe 11 is provided with a fourth control switch 12 .

The working principle of the negative pressure pump protection device 9:

When the collection bottle 32 in the storage device 3 is full, the medical staff will turn off the third control switch 10 so as to replace the collection bottle 32 with a new collection bottle 32 to collect the aspirated liquid. In the transition bottle 31, when the liquid in the transition bottle 31 reaches a certain amount, it may be sucked into the negative pressure pump 4 along with the pipeline, thereby causing the negative pressure pump 4 to be damaged. However, in the whole egg retrieval process, in order to improve the work efficiency , shorten the egg retrieval time, generally do not choose to cut off the negative pressure pump 4, therefore, in order to protect the negative pressure pump 4, the application also sets a negative pressure pump protection device 9 between the negative pressure pump 4 and the storage device 3, when the transition After the liquid in the bottle 31 reaches a certain amount, it will immediately enter the second drainage tube 91 and enter the transfer bottle 92 along with the second drainage tube 91 for storage. The transfer bottle 92 can be a container with a larger volume.

Regarding the specific structure of the bolus injector 51:

The injector 51 includes a syringe 511 and a push rod 512. The two ends of the tail of the syringe 511 are symmetrically provided with fixed ears 513. The fixed ears 513 include ears 5131 perpendicular to the syringe 511 and protrusions connected to the ends of the ears 5131. From 5132.

The push rod 512 is a solid cylinder, and its outer diameter is 1/3 of the inner diameter of the lumen of the syringe 511 .

A stopper 13 is provided on the inner wall of the needle cylinder 511 near the tail.

How the bolus 51 works:

During egg retrieval, when the inner wall of the ovary needs to be rinsed, the first control switch 6 is turned on, and the second control switch 7 is turned off, the medical staff pushes the push rod 512, and the liquid in the syringe 511 enters the first drainage from the branch tube 21 The tube 2 flows into the patient's ovary through the oocyte retrieval needle body 1 to flush the ovary, and the ovum cells attached to the ovarian tissue are washed down immediately. It is sucked into the collection bottle 32 together with the aspirated liquid, therefore, under the action of the flushing device 5, as many eggs can be obtained as possible; When performing multiple flushing, remove the injector 51 and then re-install a new injector 51 filled with liquid. The entire disassembly and installation process is simple and convenient; further, the syringe 511 is provided with a fixed ear 513. During operation, the fixed ear 513 can prevent the bolus 51 from being separated from the operator due to excessive force when the operator places his finger; The nipple direction of the syringe 511 extends in the same plane as the ear 5131 and is designed at a 120° angle with the ear 5131, which is in line with human mechanics; 1/3, therefore, there is enough space between the push rod 512 and the inner wall of the syringe 511, which can effectively prevent the operator from not using the injector 51 strictly as required, grasp the upper part of the push rod 512, and put the push rod When the upper part of 512 is pushed into the syringe 511 again, the inner wall of the syringe 511 is polluted and then the liquid in the syringe 511 is polluted; The piston portion of the push rod 512 is pulled out of the barrel 511 by the operator.

Example 3

This embodiment discloses a bolus pressurized anti-suckback double-lumen egg retrieval needle with a puncture protection device. Referring to FIG. 1 in the specification, the double-lumen egg retrieval needle includes an egg retrieval needle body 1 and a first drainage needle connected in sequence. The tube 2, the storage device 3 and the negative pressure pump 4 also include a flushing device 5, the flushing device 5 includes a bolus device 51, and the end of the first drainage tube 2 close to the egg retrieval needle body 1 is provided with a bolus device. The branch pipe 21 connected to A first control switch 6 is provided, and a second control switch 7 is provided on the end of the first drainage tube away from the egg retrieval needle body 1; the egg retrieval needle body 1 is provided with a puncture protection device 8, and the puncture protection device 8 is: The elongated structure includes a protective cover 81 and a locking mechanism 82. The protective cover 81 is a hollow tubular structure with openings at both ends. The length of 81 is less than the length of the egg retrieval needle body 1, the end of the protective cover 81 away from the needle tip of the egg retrieval needle body 1 is symmetrically provided with a handle 811, and the locking mechanism 82 includes a connector 821 hingedly connected to the handle 811 at one end. , a positioning column 822 arranged on the other end of the connecting piece 821, a first fixing seat 823 and a second fixing seat 824 arranged on the handle, and the two fixing seats are respectively provided with sockets matching the positioning column 822; A negative pressure pump protection device 9 is also arranged between the storage device 3 and the negative pressure pump 4 . The puncture protection device 8 is made of a material that is not easily deformed, and the grip handle 811 and the protective cover 81 are integrally formed.

The overall working principle:

The egg retrieval needle body 1 of the present application has two states, that is, an initial state and a use state. In the initial state, referring to Figures 1 and 3 of the specification, the needle tip of the egg retrieval needle body 1 is located in the protective cover 81, the medical staff holds the handle part on the first drainage tube 2, The egg needle body 1 is placed in the patient's vagina. Due to the protective effect of the protective cover 81, the needle tip of the egg retrieval needle body 1 will not stab the patient's vagina due to poor operation, which is not only safe to use, but also reduces the probability of injury to the patient. , and when the device is not in use, the protective cover 81 can also protect the medical staff and prevent the medical staff from being stabbed. In the initial state, the positioning post 822 is inserted into the jack on the first fixing seat 823 to connect the protective cover 81 Fix; further, when the egg retrieval needle is in use, that is, when it is necessary to absorb the egg cells in the ovary of the patient, referring to FIG. 4 in the description, the positioning post 822 is taken out from the first fixing seat 823, and then the fingers are buckled on the protective cover. The holding handle 811 on the 81 pulls the protective cover 81 toward the handle, so that the needle tip of the egg retrieval needle body 1 is exposed from the end of the protective cover 81, and then the positioning post 822 is inserted into the socket on the second fixing seat 824. In this way, the protective cover 81 is fixed, and finally the needle tip of the egg retrieval needle body 1 is used to pierce the vaginal wall and the egg retrieval needle body 1 is further pierced into the ovary, then the negative pressure pump 4 is turned on, and the egg cells in the ovary are sucked out with the liquid. into the storage device 3; further, the medical staff can use the bolus injector 51 to inject fluid into the ovary, flush out the egg cells attached to the ovarian tissue, and be sucked into the storage device 3 together with the aspirated fluid to reduce the amount of egg cells in the ovary. Adhesion and retention on the ovarian wall, obtaining as many egg cells as possible, and improving the success rate of fertilization in the assisted reproductive laboratory.

Regarding the specific structure of the storage device 3:

Referring to FIG. 1 of the specification, the storage device 3 is of a split structure, including a transition bottle 31 and a collection bottle 32. The top end of the transition bottle 31 is connected to the first drainage tube 2, and its bottom end is an open structure and is provided with an external thread, The top of the collection bottle 32 is open and is provided with an inner thread that matches the outer thread of the transition bottle 31 . The transition bottle 31 and the collection bottle 32 are threadedly connected.

How storage device 3 works:

During egg retrieval, after turning on the second control switch 7 and the third control switch 10, the egg cells enter the collection bottle in the storage device 3 through the first drainage tube 2 along with the aspirated liquid. When the collection bottle 32 is fully loaded, the medical staff Immediately turn off the third control switch 10 , then remove the fully loaded collection bottle 32 from the bottom of the transition bottle 31 , at this time, the aspirated liquid is temporarily stored in the transition bottle 31 , and finally install a new collection bottle 32 on the transition bottle 31 . At the bottom, turn on the third control switch 10 to continue collecting the aspirated liquid. Therefore, by replacing the collection bottle 32 in time to transfer the aspirated liquid, waste and contamination of the aspirated liquid caused by overflow of the aspirated liquid after the storage device 3 is fully loaded can be avoided.

Regarding the specific structure of the negative pressure pump protection device 9:

Referring to Figure 1 of the description, the negative pressure pump protection device 9 includes a second drainage tube 91 and a transfer bottle 92. One end of the second drainage tube 91 is connected to the transition bottle 31, and the other end is connected to the transfer bottle 92. The negative pressure pump 4 The negative pressure pipe 11 is connected to the transfer bottle 92 , and the negative pressure pipe 11 is provided with a fourth control switch 12 .

The working principle of the negative pressure pump protection device 9:

When the collection bottle 32 in the storage device 3 is full, the medical staff will turn off the third control switch 10 so as to replace the collection bottle 32 with a new collection bottle 32 to collect the aspirated liquid. In the transition bottle 31, when the liquid in the transition bottle 31 reaches a certain amount, it may be sucked into the negative pressure pump 4 along with the pipeline, thereby causing the negative pressure pump 4 to be damaged. However, in the whole egg retrieval process, in order to improve the work efficiency , shorten the egg retrieval time, generally do not choose to cut off the negative pressure pump 4, therefore, in order to protect the negative pressure pump 4, the application also sets a negative pressure pump protection device 9 between the negative pressure pump 4 and the storage device 3, when the transition After the liquid in the bottle 31 reaches a certain amount, it will immediately enter the second drainage tube 91 and enter the transfer bottle 92 along with the second drainage tube 91 for storage. The transfer bottle 92 can be a container with a larger volume.

Regarding the specific structure of the bolus injector 51:

The injector 51 includes a syringe 511 and a push rod 512. The two ends of the tail of the syringe 511 are symmetrically provided with fixed ears 513. The fixed ears 513 include ears 5131 perpendicular to the syringe 511 and protrusions connected to the ends of the ears 5131. From 5132.

The push rod 512 is a solid cylinder, and its outer diameter is 1/3 of the inner diameter of the lumen of the syringe 511 .

A stopper 13 is provided on the inner wall of the needle cylinder 511 near the tail.

How the bolus 51 works:

During egg retrieval, when the inner wall of the ovary needs to be rinsed, the first control switch 6 is turned on, and the second control switch 7 is turned off, the medical staff pushes the push rod 512, and the liquid in the syringe 511 enters the first drainage from the branch tube 21 The tube 2 flows into the patient's ovary through the oocyte retrieval needle body 1 to flush the ovary, and the ovum cells attached to the ovarian tissue are washed down immediately. It is sucked into the collection bottle 32 together with the aspirated liquid, therefore, under the action of the flushing device 5, as many eggs can be obtained as possible; When performing multiple flushing, remove the injector 51 and then re-install a new injector 51 filled with liquid. The entire disassembly and installation process is simple and convenient; further, the syringe 511 is provided with a fixed ear 513. During operation, the fixed ear 513 can prevent the bolus 51 from being separated from the operator due to excessive force when the operator places his finger; The nipple direction of the syringe 511 extends in the same plane as the ear 5131 and is designed at a 120° angle with the ear 5131, which is in line with human mechanics; 1/3, therefore, there is enough space between the push rod 512 and the inner wall of the syringe 511, which can effectively prevent the operator from not using the injector 51 strictly as required, grasp the upper part of the push rod 512, and put the push rod When the upper part of 512 is pushed into the syringe 511 again, the inner wall of the syringe 511 is polluted and then the liquid in the syringe 511 is polluted; The piston portion of the push rod 512 is pulled out of the barrel 511 by the operator.

Further limitations on the first drainage tube 2 and the second drainage tube 91:

The end of the first drainage tube 2 located in the transition bottle 31 is close to the bottle body of the transition bottle 31 .

The end of the second drainage tube 91 located in the revolving bottle 92 is close to the bottle body of the revolving bottle 92 .

The two drainage tubes in the present application are respectively close to the corresponding bottle body, so they can buffer the liquid flow rate and control the flow direction, so as to achieve the role of drainage, and can prevent the liquid from being left directly from a high place to cause splashing, At the same time, it can also reduce the possibility of damage to the egg cells caused by liquid splashing down from a height.

Further restrictions on the transfer bottle 92:

The bottle body of the transfer bottle 92 is provided with a scale 14 . The scale 14 on the bottle body can facilitate the medical staff to monitor the liquid in the bottle in real time.

Further restrictions on the protective cover 81:

The front end of the protective cover 81 is a circular arc structure. In the present application, the front end of the protective cover 81 is designed in a circular arc shape. Therefore, the end of the protective cover 81 is smoother, which can avoid unnecessary damage to the patient by the protective cover 81 during the egg retrieval process.

In the description of this application, it should be understood that the terms "center", "portrait", "horizontal", "front", "rear", "left", "right", "vertical", "horizontal", The orientation or positional relationship indicated by "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying The device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as limiting the scope of protection of the present application.

The above are only preferred embodiments of the present application, and are not intended to limit the present application in any form. Any simple modifications and equivalent changes made to the above embodiments according to the technical essence of the present application shall fall within the scope of the present application. within the scope of protection.

Claims (10)

1. A bolus injection pressurized anti-suckback double-lumen egg retrieval needle with a puncture protection device, comprising an egg retrieval needle body (1), a first drainage tube (2), a storage device (3) and a negative The pressure pump (4) is characterized in that it further comprises a flushing device (5), the flushing device (5) comprises a bolus device (51), and the first drainage tube (2) is close to the oocyte retrieval needle body (1). That end is provided with a branch pipe (21) connected with the injector (51), the other end of the branch pipe (21) is provided with an internal thread, and the end where the injector (51) is connected with the branch pipe (21) is provided with an external thread correspondingly, The branch pipe (21) and the injector (51) are threadedly connected, the branch pipe (21) is further provided with a first control switch (6), and the end of the first drainage pipe that is far away from the egg retrieval needle body (1) A second control switch (7) is provided; the egg retrieval needle body (1) is provided with a puncture protection device (8), and the puncture protection device (8) is a long strip structure, including a protective cover (81) and a locking mechanism (82), the two ends of the protective cover (81) have openings, and are sleeved on the egg retrieval needle body (1) through the openings, and its length is less than the length of the egg retrieval needle body (1), and the protective cover (81) is far away from the extraction needle body (1). A holding handle (811) is symmetrically arranged at the tip end of the needle tip of the egg needle body (1), and the locking mechanism (82) includes a connecting piece (821), one end of which is hingedly connected with the holding handle (811). ) at the other end of the positioning column (822), and the first fixing seat (823) and the second fixing seat (824) arranged on the handle, and the two fixing seats are respectively provided with corresponding positioning columns (822). A negative pressure pump protection device (9) is also arranged between the storage device (3) and the negative pressure pump (4). 2. The bolus pressurized anti-suckback double-lumen egg retrieval needle with a puncture protection device according to claim 1, characterized in that: the storage device (3) is a split structure, including a transition bottle (31) and a collection bottle (32), the top of the transition bottle (31) is connected with the first drainage tube (2), the bottom end of which is an open structure and is provided with an external thread, and the top of the collection bottle (32) is open and provided with a transition bottle (31) An inner thread adapted to the outer thread, the transition bottle (31) and the collection bottle (32) are threadedly connected, and a third control switch (10) is also provided at the rear of the transition bottle (31). 3. The bolus pressurized anti-suckback double-lumen egg retrieval needle with a puncture protection device according to claim 1, wherein the negative pressure pump protection device (9) comprises a second drainage tube (91) and the transfer bottle (92), one end of the second drainage tube (91) is connected with the transfer bottle (31), the other end is connected with the transfer bottle (92), and the negative pressure pump (4) is connected to the transfer bottle through the negative pressure pipe (11). (92) is connected, and the negative pressure pipe (11) is provided with a fourth control switch (12). 4. The bolus pressurized anti-suckback double-lumen egg retrieval needle with a puncture protection device according to claim 1, characterized in that: the bolus device (51) comprises a syringe (511) and a push rod ( 512), the two ends of the tail of the syringe (511) are symmetrically provided with fixing ears (513), and the fixing ears (513) include an ear (5131) perpendicular to the syringe (511) and a protrusion connected to the end of the ear (5131). from (5132). 5. The bolus pressurized anti-suckback double-lumen egg retrieval needle with a puncture protection device according to claim 4, characterized in that: the push rod (512) is a solid cylinder, and its outer diameter is a needle cylinder (512). 511) 1/3 of the inner diameter of the lumen. 6. The bolus injection pressurized anti-suckback double-lumen egg retrieval needle with a puncture protection device according to claim 4, characterized in that: a stopper (13) is provided on the inner wall of the needle barrel (511) near the tail ). The bolus pressurized anti-suckback double-lumen egg retrieval needle with a puncture protection device according to claim 2, characterized in that: the first drainage tube (2) is located in the transition bottle (31). One end is close to the bottle body of the transition bottle (31). 8. The bolus pressurized anti-suckback double-lumen egg retrieval needle with puncture protection device according to claim 3, characterized in that: the second drainage tube (91) is located at the end of the transfer bottle (92) One end is close to the bottle body of the transfer bottle (92). 9 . The bolus pressurized anti-suckback double-lumen egg retrieval needle with a puncture protection device according to claim 3 , wherein a scale ( 14 ) is provided on the bottle body of the transfer bottle ( 92 ). 10 . 10 . The bolus injection pressurized anti-suckback double-lumen egg retrieval needle with a puncture protection device according to claim 1 , wherein the front end of the protective cover ( 81 ) is an arc-shaped structure. 11 .

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