Displacement fetal endoscope with steered head end

Abstract

The invention relates to a shifting fetal endoscope with a steered head end, which belongs to the technical field of medical instruments and comprises a fetal endoscope puncture needle, a lens rotation generator, a rotation traction device and a deflection lens. According to the fetoscope, the fetoscope which is provided with a head rotating structure and a fetus flexible pushing structure at the same time is arranged, and a direction-adjusting rotating structure is formed by combining a ball rotating camera arranged through traction of eight traction wires with an automatic traction wire rolling structure outside a puncture needle; the wireless lens can be controlled to directionally turn when entering the uterus, so that the condition of a fetus can be observed at multiple angles, and the risk that a patient is injured due to the fact that the lens rotates at multiple angles by rotating a trocar of a rotary puncture needle is avoided; the fetus can be flexibly pushed during observation, and the fetus observation range is enlarged on the premise that it is guaranteed that the fetus is not injured.

Description

Technical Field

[0001] The invention relates to the technical field of medical instruments, in particular to a head-end-turnable displacement fetoscope. Background Art

[0002] The fetoscope is an optical fiber endoscope with an inner diameter of about 2.0 mm. When examining the fetus, the fetoscope will be inserted through the pregnant woman's abdominal wall with a trocar, through the uterine wall and into the amniotic cavity. The fetoscope is used to directly observe the fetal surface and understand the changes in the fetal appearance. Fetal tissue specimens can also be extracted for biopsy to diagnose whether the fetus has genetic diseases.

[0003] In the prior art, the fetoscope is only inserted through a trocar when in use, and then the needle lens on the inner side of the top of the trocar is driven to move along with the rotation of the trocar, so as to move the lens to the area to be observed and complete the target observation.

[0004] At present, in the existing technology, the fetoscope can only rely on the rotation of the cannula needle to drive the needle lens to rotate, and it is impossible to achieve automatic rotation of the needle lens. The long-term multi-angle rotation of the cannula needle will cause the puncture wound to be repeatedly stirred, which will only cause severe discomfort to the patient and even cause the wound to be pulled and cracked, damaging the patient's body. In addition, when observing the fetus with the fetoscope, the fetal position cannot be moved without damage, resulting in many parts of the fetus's body cannot be displayed and exposed to the lens for observation, thus causing the problem of incomplete observation. If the method of multi-point puncture for multi-directional observation is adopted, it will cause an increase in puncture wounds, damaging the patient's body. Summary of the invention

[0005] In view of this, the purpose of the present invention is to propose a head-end turning displacement fetoscope, by providing a fetoscope with both a head rotation structure and a fetal flexible pushing structure, so as to solve the problem in the prior art that the rotation of the lens depends on the rotation of the cannula needle when observing the fetus, causing damage to the patient's body, due to the lack of a head rotation structure, and the problem that the fetus cannot be safely moved due to the lack of a fetal flexible pushing structure, resulting in incomplete observation.

[0006] The present invention is achieved through the following technical solutions:

[0007] A head-end-turnable displacement fetoscope comprises a fetoscope puncture needle, a lens rotation generator is fixedly arranged at the tail of the fetoscope puncture needle, the lens rotation generator is fixedly connected with a deflection lens via a rotating traction device, and the deflection lens is arranged at the needle tube opening of the fetoscope puncture needle.

[0008] Furthermore, the lens rotation generator includes a rotation generator bracket, a fixed ball head is fixedly arranged on the top of the rotation generator bracket, a rotation generating ring is fixedly arranged on the outside of the central axis surface of the fixed ball head, and a traction wire guide is arranged on the bottom of the rotation generating ring.

[0009] Furthermore, the deflection lens includes a lens support rod and a wireless lens, the fixed ball head and the traction wire guide are concentrically provided with a support rod passage hole in the middle, the lens support rod is arranged on the top of the fixed ball head, the lens support rod is composed of a push-pull rod tail, a support rod and a rotating support rod head, the support rod passes through the support rod passage hole and is connected to the wireless lens through the rotating support rod head.

[0010] Furthermore, the support rod head includes a rotating ball head rotatably arranged on the top of the support rod, a traction wire fixing ring is fixedly arranged around the outer central axis surface of the rotating ball head, and the wireless lens is fixedly arranged on the top of the rotating ball head.

[0011] Furthermore, electric traction wire rollers are evenly distributed inside the rotation generating ring, a traction wire hole is opened at the bottom of the rotation generating ring corresponding to the electric traction wire roller, a traction wire is arranged on the electric traction wire roller, the traction wire passes through the traction wire hole, the traction wire guide and the needle tube of the fetoscope puncture needle in sequence and is then fixedly connected to the traction wire fixing ring, the rotation traction device is composed of the traction wire and the traction wire guide, and an electric rolling switch is arranged on the outside of the rotation generating ring corresponding to the electric traction wire roller.

[0012] Furthermore, the fetoscopic puncture needle is composed of a needle tail seat and a needle tube, and the needle tail seat is provided with an infusion hole connected to the needle tube.

[0013] Furthermore, a micro-tracheal hole is opened on the side wall of the needle tube, an inflation bag membrane is adhered and fixedly arranged on the outer side of the micro-tracheal hole, a micro-trachea is fixedly arranged on the inner side of the inflation bag membrane, and the micro-trachea passes through the micro-tracheal hole into the needle tube and is connected to the micro-inflator after passing through the infusion tube.

[0014] Furthermore, the inflatable bag membrane is made of an elastic polymer membrane.

[0015] The beneficial effects of the present invention are:

[0016] The present invention provides a fetoscope with both a head rotation structure and a fetal flexible pushing structure. A ball-head rotating camera set by traction of 8 traction wires is combined with an automatic rolling traction wire structure on the outside of the puncture needle to form a directional rotation structure, which is beneficial to achieving controlled directional steering of the wireless lens when entering the uterus, thereby observing the fetal condition from multiple angles, avoiding the risk of causing damage to the patient by rotating the cannula needle of the rotating puncture needle to achieve multi-angle rotation of the lens, and utilizing the expansion and pushing function of the micro-inflatable bag, which is beneficial to achieving flexible pushing of the fetus during observation, thereby increasing the fetal observation range while ensuring that the fetus is not injured. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is the overall structure diagram of the assembly;

[0018] Figure 2 This is the front view of the overall structure;

[0019] Figure 3 It is a cross-sectional view of the device's inflation and displacement functional structure;

[0020] Figure 4 This is an enlarged view of the rotation-occurring structure;

[0021] Figure 5 It is an enlarged cross-sectional view of the rotation generating structure;

[0022] Figure 6 It is an enlarged cross-sectional view of the inflatable structure;

[0023] Figure 7 This is an enlarged view of the deflection lens structure;

[0024] Figure 8 This is an enlarged view of the deflection lens.

[0025] Description of reference numerals:

[0026] 1. Fetoscopic puncture needle; 2. Needle tail seat; 3. Needle tube; 4. Infusion hole; 5. Lens rotation generator; 6. Rotation generator bracket; 7. Fixed ball head; 8. Rotation generator ring; 9. Traction wire guide; 10. Rotation traction device; 11. Deflection lens; 12. Traction wire; 13. Lens support rod; 14. Wireless lens; 15. Support rod passage hole; 16. Push-pull rod tail; 17. Support rod; 18. Rotation support rod head; 19. Rotation ball head; 20. Traction wire fixing ring; 21. Electric traction wire roller; 22. Traction wire hole; 23. Electric roller switch; 24. Micro tracheal hole; 25. Inflatable sac membrane; 26. Micro trachea; 27. Micro inflator. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0030] In the above description of the present invention, it should be noted that the terms "one side", "the other side", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0031] In addition, the term "same" does not mean that the parts must be absolutely the same, but slight differences are allowed. The term "vertical" only means that the positional relationship between the parts is more vertical than "parallel", and does not mean that the structure must be completely vertical, but can be slightly tilted.

[0032] like Figure 1-8 As shown, an embodiment of the present invention is: a head-end-turned displacement fetoscope, comprising a fetoscope puncture needle 1, the fetoscope puncture needle is composed of a needle tail seat 2 and a needle tube 3, and an infusion hole 4 is opened on the needle tail seat to communicate with the needle tube.

[0033] A lens rotation generator 5 is fixedly arranged at the tail end of the fetoscopic puncture needle, and the lens rotation generator includes a rotation generator bracket 6, a fixed ball head 7 is fixedly arranged on the top of the rotation generator bracket, a rotation generating ring 8 is fixedly arranged on the outside of the central axis surface of the fixed ball head, and a traction wire guide 9 is arranged at the bottom of the rotation generating ring. The traction wire guide is used to bend and guide the traction wire so that it maintains a straight state and enters the needle tube.

[0034] The lens rotation generator is fixedly connected with a deflection lens 11 through a rotating traction device 10. The rotating traction device is composed of a traction wire 12 and a traction wire guide. The deflection lens includes a lens support rod 13 and a wireless lens 14. The fixed ball head and the traction wire guide are both concentrically provided with a support rod passage hole 15 in the middle. The lens support rod is arranged at the top of the fixed ball head. The lens support rod is composed of a push-pull rod tail 16, a support rod 17 and a rotating support rod head 18. The support rod passes through the support rod passage hole and is connected to the wireless lens through the rotating support rod head. The support rod head includes a rotating ball head 19 rotatably arranged at the top of the support rod. A traction wire fixing ring 20 is fixedly arranged around the outer central axis surface of the rotating ball head. The wireless lens is fixedly arranged at the top of the rotating ball head. The deflection lens is arranged at the needle tube opening of the fetoscope puncture needle when the puncture needle is inserted. After insertion, the needle tube can be pushed out by the lens support rod for steering observation.

[0035] Electric traction wire rollers 21 are evenly arranged inside the rotating ring, a traction wire hole 22 is opened at the bottom of the rotating ring corresponding to the electric traction wire roller, a traction wire is arranged on the electric traction wire roller, the traction wire passes through the traction wire hole, the traction wire guide and the needle tube of the fetal endoscope puncture needle in sequence, and then is fixedly connected to the traction wire fixing ring, and an electric rolling switch 23 is arranged on the outside of the rotating ring corresponding to the electric traction wire roller.

[0036] A microtracheal hole 24 is provided on the side wall of the needle tube, an air-filled bladder membrane 25 is fixedly attached to the outside of the microtracheal hole, a microtrachea 26 is fixedly provided inside the air-filled bladder membrane, and the microtrachea passes through the microtracheal hole into the needle tube and is connected to a micro-inflator 27 after passing through an infusion tube. Thus, the air-filled bladder membrane can be inflated outside the puncture needle to expand in the uterus and move the fetus.

[0037] When implementing this embodiment, first press the electric rolling switch to loosen the rolling to ensure that the traction wire can be pulled out at will. At this time, push the tail of the push-pull rod so that it drives the support rod forward so that the wireless lens on the rotating ball head can be pushed to the vicinity of the needle tube orifice of the puncture needle. After the pushing is completed, the fetoscope puncture needle is punctured into the uterus and then close to the fetus. When the shooting picture transmitted back by the wireless lens shows that the wireless lens is very close to the fetus, stop inserting the fetoscope puncture needle further. At this time, you can hold the push rod pull tail and push it slightly forward a certain distance to make the entire wireless lens come out of the needle orifice, and then control the electric traction wire roller by controlling the electric rolling switch to retract the traction wire. In the stretched state, since there are 8 traction wires evenly distributed and arranged on the traction wire fixing ring, different angles of pulling force can be generated on the traction wire fixing ring by controlling the stretching and loosening of different traction wires, so that the traction wire fixing ring is pulled to drive the rotating ball head to rotate in a directional manner on the rotating support rod head, thereby driving the wireless lens thereon to rotate and finally realizing the controlled directional rotation of the wireless lens after the needle tip is extended. The effect of the lens support rod ensures that the lens will not retract due to the stretching of the traction wire, and only the rotation angle will occur. The guiding straightening effect of the traction wire guide can standardize the traction force of the traction wire into a straight line direction, thereby avoiding friction with the needle tube and causing rotation failure.

[0038] After completing the directional rotation of the lens to observe the fetus, the inflatable sac membrane can be inflated by a micro-inflator so that the inflatable sac membrane expands, which pushes the amniotic fluid flow near the fetus, thereby causing the fetus to slightly deflect and move, allowing the unobserved part of the fetus to rotate more and be displayed in the observable area of ​​the fetoscope. When the flow of amniotic fluid alone cannot drive the fetus to move, the inflatable sac membrane can be inflated to a larger size and slightly contact the fetus to cause a certain deflection, so as to maximize the observable part of the fetus. Since the inflatable sac membrane is made of smooth and flexible material, slight contact with the fetus will not cause damage to the fetus, and the fetus is suspended in the amniotic fluid and is buffered by the amniotic fluid, which is extremely safe.

[0039] In this embodiment, a fetoscope with both a head rotation structure and a fetal flexible pushing structure is provided. A ball-head rotating camera set by 8 traction wires is combined with an automatic rolling traction wire structure on the outside of the puncture needle to form a directional rotation structure, which is beneficial to achieving controlled directional steering of the wireless lens when entering the uterus, so as to observe the fetal condition from multiple angles, avoiding the risk of causing damage to the patient by rotating the cannula needle of the rotating puncture needle to achieve multi-angle rotation of the lens, and utilizing the expansion and pushing function of the micro-inflatable bag, which is beneficial to achieving flexible pushing of the fetus during observation, thereby increasing the fetal observation range while ensuring that the fetus is not injured.

[0040] In this embodiment, the inflatable bladder membrane is made of an elastic polymer film, which ensures that the bladder membrane is thin and light enough to fit perfectly on the side wall of the puncture needle without affecting the puncture. In addition, due to the good ductility of the elastic polymer material, it can expand greatly, which is beneficial to push the fetus. Finally, the elastic polymer membrane has good retraction properties. After use, it can basically return to its original shape and fit closely to the side wall of the needle tube. The surface is relatively smooth and almost no obvious friction is caused to the puncture port.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A head-end-turnable displacement fetoscope, characterized in that: It comprises a fetoscopic puncture needle, the tail of which is fixedly provided with a lens rotation generator, the lens rotation generator is fixedly connected with a deflection lens through a rotating traction device, and the deflection lens is arranged at the needle tube opening of the fetoscopic puncture needle.

2. A head-end-turned fetoscope according to claim 1, characterized in that: The lens rotation generator comprises a rotation generator bracket, a fixed ball head is fixedly arranged on the top of the rotation generator bracket, a rotation generating ring is fixedly arranged outside the central axis surface of the fixed ball head, and a traction wire guide is arranged at the bottom of the rotation generating ring.

3. A head-end-turned displacement fetoscope according to claim 2, characterized in that: The deflection lens includes a lens support rod and a wireless lens. The fixed ball head and the traction wire guide are concentrically provided with support rod passage holes in the middle. The lens support rod is arranged on the top of the fixed ball head. The lens support rod is composed of a push-pull rod tail, a support rod and a rotating support rod head. The support rod passes through the support rod passage hole and is connected to the wireless lens via the rotating support rod head.

4. The head-end-turned displacement fetoscope according to claim 3, characterized in that: The support rod head comprises a rotating ball head rotatably arranged at the top of the support rod, a traction wire fixing ring is fixedly arranged around the outer central axis surface of the rotating ball head, and the wireless lens is fixedly arranged at the top of the rotating ball head.

5. The head-end-turnable displacement fetoscope according to claim 4, characterized in that: Electric traction wire rollers are evenly distributed inside the rotation generating ring, a traction wire hole is opened at the bottom of the rotation generating ring corresponding to the electric traction wire roller, a traction wire is arranged on the electric traction wire roller, the traction wire passes through the traction wire hole, the traction wire guide and the needle tube of the fetoscope puncture needle in sequence, and then is fixedly connected to the traction wire fixing ring, the rotation traction device is composed of the traction wire and the traction wire guide, and an electric rolling switch is arranged on the outside of the rotation generating ring corresponding to the electric traction wire roller.

6. The head-end-turnable displacement fetoscope according to claim 1, characterized in that: The fetoscopic puncture needle is composed of a needle tail seat and a needle tube. The needle tail seat is provided with an infusion hole which is connected with the needle tube.

7. The head-end-turned displacement fetoscope according to claim 1, characterized in that A micro-tracheal hole is provided on the side wall of the needle tube, an air-filled bag membrane is adhered and fixedly provided on the outer side of the micro-tracheal hole, a micro-trachea is fixedly provided on the inner side of the air-filled bag membrane, and the micro-trachea passes through the micro-tracheal hole into the needle tube and is connected to the micro-inflator after passing through the infusion tube.

8. The head-end-turned displacement fetoscope according to claim 7, characterized in that :The inflatable bag membrane is made of an elastic polymer film.

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