CN211484758U

CN211484758U - Uterine neck sheath tube for oviduct interventional embolization

Info

Publication number: CN211484758U
Application number: CN201922197282.XU
Authority: CN
Inventors: 金文韬; 张国福; 李文涛
Original assignee: Obstetrics and Gynecology Hospital of Fudan University
Current assignee: Obstetrics and Gynecology Hospital of Fudan University
Priority date: 2019-12-10
Filing date: 2019-12-10
Publication date: 2020-09-15
Anticipated expiration: 2029-12-10

Abstract

The utility model provides a uterine cervix sheath pipe for embolus operation is intervene to oviduct, including cervical stopper, sheath pipe and sheath pipe seat, cervical stopper is toper hollow structure, and it is provided with tubulose cavity one along the axis direction, and the internal diameter and the sheath pipe external diameter of tubulose cavity one match, and cervical stopper activity cup joints at sheath nose end, and the sheath pipe can insert from the big end of cervical stopper to stretch out from the little end of cervical stopper, the sheath pipe sets up tubulose cavity two along the axis direction, and the sheath pipe seat sets up tubulose cavity three along the axis direction, sheath pipe seat link and sheath pipe end connection, and sheath pipe seat end sets up through-hole one, and sheath pipe seat side sets up injection through-hole two. The device can enable the oviduct catheter to pass through and directly enter the uterine cavity, reduces the damage to the cervical canal, injects the contrast medium through the injection through hole II when the oviduct catheter is inserted into the uterine tube, carries out the radiography of the uterine cavity, removes the step of repeatedly withdrawing the oviduct catheter, reduces the damage to the cervical canal and the endometrium of the uterine cavity, and reduces the operation time and the infection risk.

Description

Uterine neck sheath tube for oviduct interventional embolization

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to a uterine neck sheath pipe for embolism technique is intervene to oviduct.

Background

For patients with more severe tubal infertility, in vitro fertilization-embryo transfer is often used clinically. However, if the patient is accompanied by hydrosalpinx, the hydrosalpinx flows back into the uterine cavity to cause the pregnancy rate to be greatly reduced. DSA guided tubal interventional embolization is an alternative method for preventing hydrops reflux at present, and embolization materials are usually platinum microcoils, so that the major advantages of the embolization materials are that the risks of operation and general anesthesia are avoided, the blood supply of ovaries is not influenced, and more patients begin to select the technology to treat the hydrops tubal.

In the process of a fallopian tube interventional embolization operation, when a fallopian tube catheter is inserted into a uterine cavity, a contrast medium is injected from a cervix to clearly determine the shape of the uterine cavity and the position of a uterine horn, and meanwhile, when a spring ring is placed, the position of the uterine horn is also clearly determined, but the position of the uterus is not fixed, a reference provided by a contrast film is reserved in advance and is not reliable, and the risk of infection is increased by repeatedly withdrawing the inserted catheter.

The Chinese patent CN203425355U discloses an outer sheath tube and a sealing ring, the outer sheath tube is formed by sequentially connecting a uterine plug, a first tube body and a connector, the uterine plug is an arc cone, the uterine plug is provided with a first cavity along the axial direction, and the big end of the uterine plug is spliced with one end of the first tube body; the sealing ring is composed of a first cylinder with a second cavity, a second cylinder body and a third cylinder body, wherein a through hole is formed in the axis part of the third cylinder body, the shape of the second cavity of the first cylinder body is matched with that of the joint suspension end, an open slot is formed in the end part of the first cylinder body, and the open slot is communicated with the second cavity. The device is more reasonable as uterus oviduct radiography device, can not get into the palace chamber and carry out uterus oviduct radiography, and circular arc cone type uterine plug can seal the outer mouth of cervix completely when injecting the contrast medium, prevents that the contrast medium is excessive, but circular arc cone type uterine plug can't reach the inner mouth of cervical canal when as the sheath pipe, is unfavorable for oviduct catheter to insert. As can be seen from the structural schematic diagram of the sheath tube of the fig. 1, the uterine plug is inserted at one end of the first tube body, and the first tube body can not completely penetrate the uterine plug, so that the structure can play a good role in blocking gas (liquid) in the uterus from overflowing at the external opening of the uterus, but because a slender cervical tube channel is arranged between the external opening of the uterus and the internal opening, the fallopian tube catheter can only be guided to the external opening during insertion, can not be guided to enter the internal opening, can not smoothly enter the uterine cavity, and can easily cause damage to the cervical tube. In addition, the sealing ring is only provided with a through hole matched with the outer diameter of the oviduct catheter, and is not provided with an injection through hole or a pipeline, so that uterine cavity radiography can not be carried out when the oviduct catheter and the microcatheter are inserted in an operation, the oviduct catheter must be withdrawn firstly to inject a contrast medium for radiography, the risk of operation infection can be improved, the injury of a cervical canal is increased, and the placing accuracy of the embolism spring ring is influenced.

In summary, it is not possible to completely guide the fallopian tube into the uterine opening during the tubal embolization, and it is not possible to simultaneously perform the radiography to show the uterine angle while the tubal catheter is inserted, so it is desirable to provide a cervical sheath for tubal embolization to solve the above-mentioned problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a uterine neck sheath tube for uterine tube interventional embolization, which can guide the uterine tube to enter the uterine inner opening during the uterine tube embolization, and inject contrast medium to display the uterine angle by contrast when the catheter of the uterine tube is inserted.

In order to realize the above-mentioned purpose, the utility model provides a uterine cervix sheath pipe for embolisms is intervene to oviduct, including cervix stopper, sheath pipe and sheath pipe seat, its characterized in that, the cervix stopper is toper hollow structure, and it is provided with tubulose cavity one along the axis direction, the internal diameter and the sheath pipe external diameter of tubulose cavity one match, the activity of cervix stopper is cup jointed sheath pipe head end, and the sheath pipe can insert from the big head end of cervix stopper to stretch out from the little head end of cervix stopper, the sheath pipe sets up tubulose cavity two along the axis direction, the sheath pipe seat sets up tubulose cavity three along the axis direction, sheath pipe seat link with sheath pipe end connection, sheath pipe seat end set up through-hole one, and sheath pipe seat side sets up injection through-hole two.

As a preferable scheme, the head end of the sheath tube is of a round blunt structure. The sheath tube can be inserted from the large head end of the cervical plug and extends out from the small head end of the cervical plug, and passes through the cervical canal to enter the uterus, and the round and blunt structure reduces the damage to the inner wall of the cervical canal.

As a preferable scheme, the first through hole and the second injection through hole are communicated with the second tubular cavity. The through hole arranged at the tail end of the sheath tube seat is used for introducing an oviduct catheter and a microcatheter, the catheter passes through the second tubular cavity of the sheath tube and enters the uterus, the injection through hole arranged on the side surface of the sheath tube seat is used for connecting an injector to inject a contrast medium, and the contrast medium enters the uterus through the second tubular cavity to carry out uterine cavity radiography.

As a preferable scheme, the sheath tube is of a double-layer structure, a first interlayer is formed between the second tubular cavity and the outer wall of the sheath tube, the first interlayer is provided with a plurality of small holes or is open at the head end of the sheath tube, the first through hole is communicated with the second tubular cavity, and the second injection through hole is communicated with the first interlayer. The sheath double-layer structure enables the contrast agent to have an independent channel to enter the uterus, the injection through hole II is communicated with the interlayer I, the contrast agent is injected from the injection through hole II and directly reaches the head end of the sheath through the interlayer I, and the head end of the sheath is provided with a plurality of small holes or is in an open type, so that the contrast agent enters the uterus to carry out uterine cavity radiography.

Preferably, the through hole has a diameter matched with the outer diameter of the oviduct catheter.

Preferably, the inner diameter of the tubular cavity II is larger than the outer diameter of the oviduct catheter.

As a preferred scheme, the second injection through hole is provided with a three-way device. The three-way device is provided with a circulation direction switch, and the three-way device is convenient to operate when the contrast agent is injected.

Preferably, the second injection through hole is connected with a side pipe, and a tee joint device is arranged at the tail end of the side pipe. The three-way device is provided with a flow direction switch, and the contrast agent is injected through the extended side tube, so that the operation space is increased, and the operation is more convenient during the operation.

Preferably, the end of the sheath tube seat is provided with an anti-reflux valve. The valve is generally made of silica gel, and can be inserted into the oviduct catheter from the tail end of the sheath seat and can also be used for blocking the tail end of the sheath seat to prevent the contrast agent and the like from flowing backwards.

Preferably, the outer wall of the sheath tube is provided with guide scale marks. The sheath needs to enter the inner opening from the external uterine opening, and the scale lines can remind an operator of intuitively knowing the entering depth, so that the operation is more convenient, and the oviduct is guided to enter a proper position.

The utility model has the advantages of, this device can make oviduct pipe pass through and directly get into the palace chamber, reduces the damage to the cervical canal, and the cervical stopper can seal the outer mouthful of cervix completely, when oviduct pipe inserts the oviduct, injects the contrast medium through injection through-hole two, carries out the palace chamber radiography, removes the step of withdrawing from the oviduct pipe repeatedly from, has reduced the damage of cervical canal and palace intracavity membrance, reduces operation time and infection risk.

Drawings

Fig. 1 is a schematic structural view of a cervical sheath for embolization for intervention of fallopian tube in example 1.

FIG. 2 is a schematic structural view of a cervical sheath for embolization in an intervention operation of fallopian tube in example 2

Description of reference numerals:

1-cervical plug; 11-tubular cavity one; 12-big head end; 13-small head end; 2-sheath; 21-tubular cavity II; 22-interlayer one; 23-sheath head end; 3-sheath base; 31-tubular cavity III; 32-sheath tube seat connecting end; 33-sheath seat end; 34-through hole one; 35-injection through hole two; 36-three-way device; 37-side tube; 38-three-way device.

Detailed Description

Hereinafter, the technique of the present invention will be described in detail with reference to the specific embodiments. It should be understood that the following detailed description is only for assisting the person skilled in the art in understanding the present invention, and is not intended to limit the present invention.

Example 1.

Referring to fig. 1, the cervical sheath for tubal interventional embolization includes a cervical plug 1, a sheath tube 2 and a sheath tube seat 3, wherein the cervical plug 1 is a conical hollow structure, and is provided with a first tubular cavity 11 along an axial direction, an inner diameter of the first tubular cavity 11 is matched with an outer diameter of the sheath tube 2, the cervical plug 1 is movably sleeved at a head end of the sheath tube 2, the sheath tube 2 can be inserted from a large head end 12 of the cervical plug and extends out from a small head end 13 of the cervical plug, the sheath tube 2 is provided with a second tubular cavity 21 along the axial direction, the sheath tube seat 3 is provided with a third tubular cavity 31 along the axial direction, a connecting end 32 of the sheath tube seat is connected with a tail end of the sheath tube 2, a tail end 33 of the sheath tube seat is provided with a first through hole 34, and a side surface of the sheath tube seat.

The bore of the tubular cavity three 31 matches the outer diameter of the sheath 2 so that the sheath 2 is just inserted into the tubular cavity three 31. The inner diameter of the tubular cavity II 21 is larger than the outer diameter of the oviduct catheter, so that the oviduct catheter can freely pass through the tubular cavity II 21.

The head end 23 of the sheath tube is in a round blunt structure, and the first through hole 34 and the second injection through hole 35 are both communicated with the second tubular cavity 21. The aperture of the first through hole 34 arranged at the tail end 33 of the sheath tube seat is matched with the outer diameter of the oviduct catheter, the oviduct catheter and the microcatheter are introduced, and the catheter passes through the second tubular cavity 21 of the sheath tube and enters the uterus. The second injection through hole 35 arranged on the side surface of the sheath tube seat is connected with a side tube 37, and the tail end of the side tube 37 is provided with a three-way device 38. The contrast agent is injected through the extended side tube 37, so that the operation space is increased, and the operation is more convenient during the operation.

The sheath hub end 33 is provided with an anti-reflux valve (not shown). The valve is generally composed of silica gel, and can be inserted into the oviduct catheter from the tail end 33 of the sheath seat, and can also be used for blocking the tail end of the sheath seat to prevent the contrast agent and the like from flowing backwards.

For the operation during the operation, the outer wall of the sheath is provided with a guiding scale mark (not shown). The sheath needs to enter the inner opening from the external uterine opening, and the scale lines can remind an operator of intuitively knowing the entering depth, so that the operation is more convenient, and the oviduct catheter is guided to enter a proper position.

Example 2.

Referring to fig. 2, like the structure of embodiment 1, the cervical sheath for tubal interventional embolization includes a cervical plug 1, a sheath tube 2 and a sheath tube seat 3, wherein the cervical plug 1 is a tapered hollow structure, and is provided with a first tubular cavity 11 along an axial direction, an inner diameter of the first tubular cavity 11 matches an outer diameter of the sheath tube 2, the cervical plug 1 is movably sleeved at a head end of the sheath tube 2, the sheath tube 2 is insertable from a large head end 12 of the cervical plug and extends from a small head end 13 of the cervical plug, the sheath tube 2 is provided with a second tubular cavity 21 along the axial direction, the sheath tube seat 3 is provided with a third tubular cavity 31 along the axial direction, a connecting end 32 of the sheath tube seat is connected with a tail end of the sheath tube 2, a tail end 33 of the sheath tube seat is provided with a first through hole 34, and a side surface of the sheath tube seat is provided with a second.

The sheath 2 in this embodiment is provided with a double-layer structure, and a first interlayer 22 is further provided on the basis of the second tubular cavity 21. The first interlayer 22 is provided with a plurality of small holes (not shown) or is open at the head end 23 of the sheath tube, the first through hole 34 is communicated with the second tubular cavity 21, and the second injection through hole 35 is communicated with the first interlayer 22. The sheath double-layer structure enables the contrast agent to have an independent channel to enter the uterus, the injection through hole II 35 is communicated with the interlayer I22, the contrast agent is injected from the injection through hole II 35 and directly reaches the sheath head end 23 through the interlayer I22, and the sheath head end 23 is provided with a plurality of small holes or is open, so that the contrast agent enters the uterus to carry out uterine cavity radiography. The second injection through hole 35 can also be connected with a side tube, contrast agent is injected through the extended side tube, and a three-way device is arranged at the tail end of the side tube.

The tail end 33 of the sheath tube seat is provided with a backflow prevention valve which is generally made of silica gel, and the valve can be inserted into an oviduct catheter from the tail end 33 of the sheath tube seat and can also block the tail end of the sheath tube seat to prevent the backflow of contrast media and the like.

The using method of the cervical sheath for the oviduct embolism comprises the following steps: firstly, the sheath tube is inserted from the large head end of the cervical plug and extends out from the small head end of the cervical plug, passes through the cervical plug and is placed into the cervical canal through the external cervical orifice, the cervical plug is pushed to the external cervical orifice, and the external cervical orifice is completely sealed. The assistant connects the injector with the three-way device, opens the drainage direction switch, and carries out hysterosalpingography. After the uterus oviduct radiography is finished, the three-way switch is closed, and an oviduct catheter and a micro catheter are introduced through the sheath tube seat to carry out the superselective intubation of the oviduct. After the microcatheter is placed in the isthmus of the fallopian tube, uterine cavity radiography is carried out through the three-way device again, the position of the uterine horn and the isthmus is observed, the placing position of the spring ring is determined, after the spring ring is placed in the microcatheter, the microcatheter is withdrawn, uterine cavity radiography is carried out through the side tube, the injection pressure is monitored, whether the contrast agent leakage exists at the far end of the fallopian tube or not is observed, if no leakage performance exists, the operation is ended, if leakage performance exists, the microcatheter needs to be inserted into the fallopian tube again to supplement embolism until no leakage performance exists at the far end of the fallo.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. Uterine cervix sheath tube for embolectomy is intervene to oviduct, including cervical stopper, sheath pipe and sheath pipe seat, its characterized in that, cervical stopper is toper hollow structure, and it is provided with tubulose cavity one along the axis direction, the internal diameter and the sheath pipe external diameter of tubulose cavity one match, cervical stopper activity cup joints sheath pipe head end, and the sheath pipe can insert from the big head end of cervical stopper to stretch out from the little head end of cervical stopper, the sheath pipe sets up tubulose cavity two along the axis direction, the sheath pipe seat sets up tubulose cavity three along the axis direction, sheath pipe seat link end with sheath pipe end connection, sheath pipe seat end set up through-hole one, and sheath pipe seat side sets up injection through-hole two.

2. The uterine neck sheath for interventional embolization of uterine tube according to claim 1, wherein the sheath tip is a round blunt structure.

3. The uterine neck sheath for interventional embolization of fallopian tube of claim 1, wherein both the first through hole and the second injection through hole communicate with the second tubular cavity.

4. The uterine neck sheath for embolization according to claim 1, wherein the sheath is a double-layer structure, a first interlayer is formed between the second tubular cavity and the outer wall of the sheath, the first interlayer is provided with a plurality of small holes or is open at the head end of the sheath, the first through hole is communicated with the second tubular cavity, and the second injection through hole is communicated with the first interlayer.

5. The cervical sheath for embolization of claim 1, wherein the through hole has a diameter matching the outer diameter of the fallopian tube catheter.

6. The uterine neck sheath for interventional embolization of fallopian tube of claim 1, wherein the inner diameter of the tubular cavity two is larger than the outer diameter of the fallopian tube catheter.

7. The uterine neck sheath for interventional embolization of uterine tube according to claim 1, wherein said second injecting hole is provided with a three-way device.

8. The uterine neck sheath tube for interventional embolization of fallopian tube of claim 1, wherein the second injecting through hole is connected with a side tube, and a three-way device is arranged at the end of the side tube.

9. The cervical sheath for interventional embolization of fallopian tube according to claim 1, wherein the end of the sheath base is provided with a reverse flow prevention valve.

10. The cervical sheath for interventional embolization of fallopian tube according to claim 1, wherein the outer wall of the sheath is provided with guide scale lines.