CN214434434U - Novel transvaginal ultrasound-guided fetal reduction device - Google Patents
Novel transvaginal ultrasound-guided fetal reduction device Download PDFInfo
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- CN214434434U CN214434434U CN202023023915.4U CN202023023915U CN214434434U CN 214434434 U CN214434434 U CN 214434434U CN 202023023915 U CN202023023915 U CN 202023023915U CN 214434434 U CN214434434 U CN 214434434U
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- puncture needle
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- reduction device
- stepping motor
- transvaginal ultrasound
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Abstract
The utility model discloses a novel it subtracts child to lead through vagina supersound device, include: the hollow puncture needle, the strangling hand grip, the handle and the bracket. The utility model discloses a subtract child device novel structure, it is convenient to use, through mechanical tractive, strangles at cavity pjncture needle mouth cutting, is different from the method of other strangles sword at pregnant cyst internal rotation cutting, and the cutterbar is passive cutting, can not harm pregnant cyst wall or uterus wall, and is little to patient's health influence.
Description
Technical Field
The utility model belongs to the field of medical equipment, in particular to novel transvaginal ultrasound guide subtracts child device.
Background
With the application of ovulation-promoting technology, artificial fertilization and other assisted reproduction technologies, on the one hand, the method brings hopes for patients with infertility, but on the other hand, the multiple pregnancy is increased. Because the morbidity and the fatality rate of the perinatal infants in the multiple pregnancies are higher than the single pregnancy rate, the infants are easy to be aborted, premature and low-weight, and the complications of the pregnant women are many, thereby seriously influencing the health of pregnant women and fetuses and even endangering the life. Before the multiple pregnancy, the mode of abortion or conception of the development is adopted, and since Kerneyi in the 80 th of the 20 th century, multiple birth reduction (MFPR) is used, the number of delivered fetuses can be safely and effectively controlled, the survival rate of fetuses is improved, and the harm of multiple pregnancies to mothers and babies is greatly reduced. MFRP can be carried out in the whole pregnancy, the clinical practice at present includes early stage fetal reduction (the gestational period is less than 12 weeks), middle stage fetal reduction (12-25 weeks) and late stage fetal reduction (more than 25 weeks) according to the gestational period during fetal reduction, and the effect is better at home and abroad due to the fact that the fetal reduction at the early stage of pregnancy is recognized at present.
At present, mechanical destruction methods are mostly adopted to repeatedly puncture embryos until the heartbeat stops or embryo negative pressure suction methods are adopted. Because the embryo is smaller at the moment, the inactivated embryo can be completely autolyzed and absorbed, the blood coagulation function is not obviously influenced, and the pregnant sac has small volume, the volume and the pressure change of the postoperative uterine cavity are not obvious in the operation, the probability of inducing uterine contraction is small, the better effect can be achieved by simply pumping, cardiotoxic drugs do not need to be injected, the possibility that the drugs enter other embryos through the blood circulation between fetuses does not exist, and the embryo does not have influence on the mother body and the rest embryos.
At present, no puncture needle is specially used for fetal reduction in clinic, and the ovum taking needle is mainly used for replacing mechanical destruction or embryo suction. Have certain limitation, to great can not be fine subtract the disappearance, need for a special pjncture needle that is used for subtracting the child urgently, can all subtract the child before 9 weeks of gestation and embryo are less than or equal to 2cm, reduce the injury to the pregnant woman, provide convenient puncture needle device that subtracts child for clinician operates. However, no report is found on such a puncture needle device.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a novel transvaginal ultrasound guiding and fetal reduction device aiming at the defects of the prior art.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a novel transvaginal ultrasound guided fetal reduction device comprising: a hollow puncture needle, a strangling hand grip, a handle and a bracket;
the handle comprises a shell, a stepping motor, a columnar gear and a control assembly, wherein the stepping motor, the columnar gear and the control assembly are arranged in the shell;
the columnar gear is fixed on a rotating shaft of the stepping motor and is meshed with the gear at the tail part of the strangling and killing gripper, and the stepping motor drives the columnar gear to rotate and drives the strangling and killing gripper to rotate under the control of the control assembly;
the tail part of the strangling hand grip is provided with an operating switch extending out of the shell, and the strangling hand grip can freely move back and forth under the control of the operating switch;
the bracket comprises a puncture needle guide tube, a B-ultrasonic probe fixing buckle and a handle fixing clamping groove; the puncture needle guide tube is communicated and fixed at the front end of the handle fixing clamping groove, and the B ultrasonic probe fixing buckle is arranged at the lower parts of the handle fixing clamping groove and the puncture needle guide tube.
Furthermore, the control assembly comprises a single chip microcomputer and a driving circuit, the single chip microcomputer controls the rotating speed and the number of rotating circles of the stepping motor, and the driving circuit provides proper voltage and current for the stepping motor.
Furthermore, the device also comprises a foot control switch, and a channel circuit of the foot control switch is connected with the control component and the power plug.
Furthermore, the hand grip is in a three-claw shape, a double-ring basket shape or a single-ring sleeve shape.
Furthermore, the operating switch comprises an operating button, a connecting rod and a double-clamping ring; the operating button is fixed to one end of the connecting rod, the double clamping rings are fixed to the other end of the connecting rod, the operating button extends out of the shell through the connecting rod, and the double clamping rings are respectively sleeved on the two sides of the gear on the guide wire.
Furthermore, the tail part of the hollow puncture needle is also provided with a suction port extending out of the shell.
Furthermore, the front end of the hollow puncture needle is a sharp needle head, the tail end of the hollow puncture needle is provided with a silica gel film, and the guide wire of the strangling hand penetrates through the silica gel film.
The utility model provides a subtract child device can use three kinds of tongs: three-claw shape, double-ring basket shape or single-ring sleeve shape. The three-claw-shaped hand grip can be used for small embryos, and can grasp the small embryos and rotate and torque to kill the small embryos. The double-ring basket-shaped gripper can be used for middle embryos and can be pulled back and rotated after being gripped. The single-ring sleeve-shaped gripper can be used for pulling back and rotating to cut off the pedicles of the ligation embryos.
Before use, a suitable hand grip is selected based on preoperative ultrasound examination. When the puncture needle is used, the B-ultrasonic probe is fixed through the B-ultrasonic probe fixing buckle at the bottom of the bracket, the hollow puncture needle is placed into the puncture needle guide tube, and the handle is fixed in the handle fixing clamping groove. Under the guidance of B-ultrasonic, the hollow puncture needle pierces into the pregnant sac, and the control button is pushed forward to make the hand grip extend out of the hollow puncture needle. The angle is adjusted to ensure that the hand grip catches the embryo, and then the operating button is pushed to ensure that the hand grip retracts to close to grasp the embryo. When the needle is pulled back, the cutting is carried out by matching with the needle head part of the hollow puncture needle, if the cutting can not be pulled, the foot control switch can be opened to start the stepping motor to rotate the gripper to be positioned at the needle head part for rotary cutting. If medicine injection or suction is needed during the operation, the hand grip can be retracted into the hollow puncture needle and is connected with the suction port through the syringe.
The utility model discloses a subtract child device novel structure, it is convenient to use, through mechanical tractive, strangles at cavity pjncture needle mouth cutting, is different from the method of other strangles sword at pregnant cyst internal rotation cutting, and the cutterbar is passive cutting, can not harm pregnant cyst wall or uterus wall, and is little to patient's health influence.
Drawings
FIG. 1 is a sectional view of the handle and the hollow puncture needle and a schematic view of the construction of the strangling grip according to the embodiment.
FIG. 2 is a schematic structural view of a stent according to an embodiment.
Fig. 3 is a schematic structural diagram of three kinds of grippers of the embodiment.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the terms "comprises" and "comprising," and any variations thereof, in the description and claims of this application and the above-described drawings, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The novel transvaginal ultrasound guided fetal reduction device shown in figures 1 and 2 comprises: the hollow puncture needle comprises a hollow puncture needle 1, a strangling hand grip, a handle and a support.
Wherein the handle comprises a housing 2 and a stepper motor 3, a cylindrical gear 4 and a control assembly 5 arranged inside the housing. The tail part of the hollow puncture needle is fixed in the shell. The strangling grip comprises a guide wire 6, a grip 7 arranged at the head part and a gear 8 arranged at the tail part. The hand grip is in a three-claw shape, a double-ring basket shape or a single-ring sleeve shape. The head part of the strangling hand grip and most of guide wires are arranged in the hollow puncture needle.
The tail of the hollow puncture needle is also provided with a suction port 9 extending out of the shell. The front end of the hollow puncture needle is a sharp needle head, the tail end of the hollow puncture needle is provided with a silica gel film 10, and a guide wire of the strangling hand passes through the silica gel film.
The columnar gear is fixed on a rotating shaft of the stepping motor and is meshed with the gear at the tail of the twisting and killing gripper. The control assembly comprises a single chip microcomputer and a driving circuit, the single chip microcomputer controls the rotating speed and the number of rotating circles of the stepping motor, and the driving circuit provides proper voltage and current for the stepping motor. The stepping motor drives the columnar gear to rotate under the control of the control assembly and drives the twisting and killing gripper to rotate. The device also comprises a foot control switch 11, a channel circuit of the foot control switch is connected with the control component and the power plug 12, and the start of the stepping motor is controlled.
The tail part of the twisting and killing hand grip is provided with an operating switch extending out of the shell, and the operating switch comprises an operating button 13, a connecting rod 14 and double clamping rings (15a and 15 b). One end of the connecting rod is fixed with the operating button, and the other end is fixed with the double clamping rings. The shell is provided with a linear through groove, the connecting rod penetrates through the through groove and extends out of the shell, the operating button is positioned outside the shell, and the double clamping rings are respectively sleeved on the guide wire and positioned on two sides of the gear. The operating button slides in the through groove to drive the twisting and killing gripper to move back and forth.
The bracket comprises a puncture needle guide tube 16, B-ultrasonic probe fixing buckles (18a, 18B) and a handle fixing clamping groove 17. The puncture needle guide tube is communicated and fixed at the front end of the handle fixing clamping groove, and the B-ultrasonic probe fixing buckle is arranged at the lower parts of the handle fixing clamping groove and the puncture needle guide tube.
The tire-reduction device may use three grippers (as in fig. 3): three-claw 19, double-ring basket 20 or single-ring sleeve 21. The three-claw-shaped hand grip can be used for small embryos, and can grasp the small embryos and rotate and torque to kill the small embryos. The double-ring basket-shaped gripper can be used for gripping a middle embryo and then rotating the gripper. The single-ring sleeve-shaped gripper can be used for pulling and rotating to cut off the embryo pedicles.
Before use, a suitable hand grip is selected based on preoperative ultrasound examination. When the puncture needle is used, the B-ultrasonic probe is fixed through the B-ultrasonic probe fixing buckle at the bottom of the bracket, the hollow puncture needle is placed into the puncture needle guide tube, and the handle is fixed in the handle fixing clamping groove. Under the guidance of B-ultrasonic, the hollow puncture needle pierces into the pregnant sac, and the control button is pushed forward to make the hand grip extend out of the hollow puncture needle. The angle is adjusted to ensure that the hand grip catches the embryo, and then the operating button is pushed to ensure that the hand grip retracts to close to grasp the embryo. When the needle is pulled back, the cutting is carried out by matching with the needle head part of the hollow puncture needle, if the cutting can not be pulled, the foot control switch can be opened to start the stepping motor to rotate the gripper to be positioned at the needle head part for rotary cutting. If medicine injection or suction is needed during the operation, the hand grip can be retracted into the hollow puncture needle and is connected with the suction port through the syringe.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A novel transvaginal ultrasound guided fetal reduction device, characterized by comprising: a hollow puncture needle, a strangling hand grip, a handle and a bracket;
the handle comprises a shell, a stepping motor, a columnar gear and a control assembly, wherein the stepping motor, the columnar gear and the control assembly are arranged in the shell;
the columnar gear is fixed on a rotating shaft of the stepping motor and is meshed with the gear at the tail part of the strangling and killing gripper, and the stepping motor drives the columnar gear to rotate and drives the strangling and killing gripper to rotate under the control of the control assembly;
the tail part of the strangling hand grip is provided with an operating switch extending out of the shell, and the strangling hand grip can freely move back and forth under the control of the operating switch;
the bracket comprises a puncture needle guide tube, a B-ultrasonic probe fixing buckle and a handle fixing clamping groove; the puncture needle guide tube is communicated and fixed at the front end of the handle fixing clamping groove, and the B ultrasonic probe fixing buckle is arranged at the lower parts of the handle fixing clamping groove and the puncture needle guide tube.
2. The novel transvaginal ultrasound guided fetal reduction device of claim 1, wherein: the control assembly comprises a single chip microcomputer and a driving circuit, the single chip microcomputer controls the rotating speed and the number of rotating circles of the stepping motor, and the driving circuit provides proper voltage and current for the stepping motor.
3. The novel transvaginal ultrasound guided fetal reduction device of claim 1, wherein: the device also comprises a foot control switch, and a channel circuit of the foot control switch is connected with the control component and the power plug.
4. The novel transvaginal ultrasound guided fetal reduction device of claim 1, wherein: the tongs are three-claw shape, double-ring basket shape or single-ring sleeve shape.
5. The novel transvaginal ultrasound guided fetal reduction device of claim 1, wherein: the operating switch comprises an operating button, a connecting rod and a double-clamping ring; the operating button is fixed to one end of the connecting rod, the double clamping rings are fixed to the other end of the connecting rod, the operating button extends out of the shell through the connecting rod, and the double clamping rings are respectively sleeved on the two sides of the gear on the guide wire.
6. The novel transvaginal ultrasound guided fetal reduction device of claim 1, wherein: the tail part of the hollow puncture needle is also provided with a suction port extending out of the shell.
7. The novel transvaginal ultrasound guided fetal reduction device of claim 1, wherein: the front end of the hollow puncture needle is a sharp needle head, the tail end of the hollow puncture needle is provided with a silica gel film, and the guide wire of the strangling hand passes through the silica gel film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023023915.4U CN214434434U (en) | 2020-12-16 | 2020-12-16 | Novel transvaginal ultrasound-guided fetal reduction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023023915.4U CN214434434U (en) | 2020-12-16 | 2020-12-16 | Novel transvaginal ultrasound-guided fetal reduction device |
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| Publication Number | Publication Date |
|---|---|
| CN214434434U true CN214434434U (en) | 2021-10-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023023915.4U Active CN214434434U (en) | 2020-12-16 | 2020-12-16 | Novel transvaginal ultrasound-guided fetal reduction device |
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|---|---|
| CN (1) | CN214434434U (en) |
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- 2020-12-16 CN CN202023023915.4U patent/CN214434434U/en active Active
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